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1. Stage specific expression of angiotensin-converting enzyme and thickened lamina propria in relation to male fertility

Author

Mina Pencheva, Yvetta Koeva, Ekaterina Pavlova, and Nina Atanassova

Subjects
angiotensin-converting enzyme, infertility, membra, Medicine
Abstract

Introduction: The testis is an immune privileged organ that provides a specific environment for germ cell development. Various factors responsible for inflammatory changes can lead to deterioration of the immune tolerant model found in the testis. As a result, the thickness of the proper membrane of seminiferous tubules changes and the process of spermatogenesis is disturbed. Aim: The purpose of the present study was to find the connection between the changes in the level of testis-specific isoform of angiotensin-converting enzyme (tACE) expression and the morphological changes of the seminiferous tubule wall of the testis in patients with infertility.Materials and methods: The study included 24 infertile men who underwent a testicular biopsy. Routine histological techniques, immunohistochemical reactions for tACE, α-smooth muscle actin, and morphometric analysis were performed to examine the biopsy preparations.Results: By using testicular biopsy to diagnose patients with infertility, a stage-specific pattern of the processes associated with thickened proper membrane of seminiferous tubules was established and a decreased or absent spermatogenic activity was observed.Conclusions: A significant increase in the proper membrane thickness of the seminiferous tubules in the testis was found in patients with infertility. This finding shows that the processes take place gradually over time, correlating with the degree of pathology, and that changes do not depend on the factors causing them. We also found that the degree of proper membrane thickening correlated with disturbances of spermatogenesis, using tACE expression as a marker for spermatogenic epithelium differentiation.

Published
2022
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2. Changes in Tyrosine Hydroxylase Activity and Dopamine Synthesis in the Nigrostriatal System of Mice in an Acute Model of Parkinson’s Disease as a Manifestation of Neurodegeneration and Neuroplasticity

Author

Anna Kolacheva, Leyla Alekperova, Ekaterina Pavlova, Alyona Bannikova, and Michael V. Ugrumov

Subjects
Parkinson’s disease, MPTP model, mice, tyrosine hydroxylase, phosphorylation, neurodegeneration, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571
Abstract

The progressive degradation of the nigrostriatal system leads to the development of Parkinson’s disease (PD). The synthesis of dopamine, the neurotransmitter of the nigrostriatal system, depends on the rate-limiting enzyme, tyrosine hydroxylase (TH). In this study, we evaluated the synthesis of dopamine during periods of neurodegradation and neuroplasticity in the nigrostriatal system on a model of the early clinical stage of PD. It was shown that the concentration of dopamine correlated with activity of TH, while TH activity did not depend on total protein content either in the SN or in the striatum. Both during the period of neurodegeneration and neuroplasticity, TH activity in SN was determined by the content of P19-TH, and in the striatum it was determined by P31-TH and P40-TH (to a lesser extent). The data obtained indicate a difference in the regulation of dopamine synthesis between DA-neuron bodies and their axons, which must be considered for the further development of symptomatic pharmacotherapy aimed at increasing TH activity.

Published
2022
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3. Reversible Contraceptive Potential of FDA Approved Excipient N, N-Dimethylacetamide in Male Rats

Author

Nupur Khera, Chafik Ghayor, Anna K. Lindholm, Ekaterina Pavlova, Nina Atanassova, and Franz E. Weber

Subjects
male contraception, bromodomain (BRD), reproduction, excipient, rat, BET inhibitor, Physiology, QP1-981
Abstract

Development of an effective male contraceptive agent remains a challenge. The present study evaluates the potential of N, N-Dimethylacetamide (DMA), a FDA approved excipient as a male contraceptive agent. Male Sprague Dawley rats injected with DMA for a period of 8 weeks (one injection per week) showed a significant alteration of reproductive parameters. Furthermore, DMA treated animals showed complete infertility in a dose dependent manner, as no pups were born despite proper mating between females and DMA treated males. However, stopping the DMA treatment for a period of 8 weeks (after the initial treatment) restored the reproductive parameters to normal. Moreover, the fertility was resumed to normal as pups were born in the groups where DMA treatment was halted after initial DMA treatment. All these changes had no effect on the level of reproductive hormones FSH, LH and testosterone. Taken together, our results indicate that DMA acts in a reversible and non-hormonal manner to achieve contraception in rats. Therefore, repurposing the use of DMA could lead in a short time to an inexpensive and safer male contraceptive option.

Published
2020
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4. The Sphingolipid Asset Is Altered in the Nigrostriatal System of Mice Models of Parkinson’s Disease

Author

Victor Blokhin, Maria Shupik, Ulyana Gutner, Ekaterina Pavlova, Albert T. Lebedev, Olga Maloshitskaya, Vsevolod Bogdanov, Sergey Sokolov, Alice Alessenko, and Michael Ugrumov

Subjects
mice, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, modeling of Parkinson’s disease, dopaminergic nigrostriatal system, sphingolipids, enzymes, Microbiology, QR1-502
Abstract

Parkinson’s disease (PD) is a neurodegenerative disease incurable due to late diagnosis and treatment. Therefore, one of the priorities of neurology is to study the mechanisms of PD pathogenesis at the preclinical and early clinical stages. Given the important role of sphingolipids in the pathogenesis of neurodegenerative diseases, we aimed to analyze the gene expression of key sphingolipid metabolism enzymes (ASAH1, ASAH2, CERS1, CERS3, CERS5, GBA1, SMPD1, SMPD2, UGCG) and the content of 32 sphingolipids (subspecies of ceramides, sphingomyelins, monohexosylceramides and sphinganine, sphingosine, and sphingosine-1-phosphate) in the nigrostriatal system in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse models of the preclinical and clinical stages of PD. It has been shown that in PD models, the expression of five of the nine studied genes (CERS1, CERS5, ASAH1, ASAH2, and GBA1) increases but only in the substantia nigra (SN) containing dopaminergic cell bodies. Changes in the expression of enzyme genes were accompanied by an increase in the content of 7 of the 32 studied sphingolipids. Such findings suggest these genes as attractive candidates for diagnostic purposes for preclinical and clinical stages of PD.

Published
2022
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5. Regional Lymphotropic Therapy in Combination with Low Level Laser Therapy for Treating Multi-Drug-Resistant Tuberculosis

Author

Oksana Dogorova, Ekaterina Pavlova, and Maria Vinokurova

Subjects
multi-drug-resistant tuberculosis, laser irradiation therapy, lymphotropic therapy, isoniazid., Medicine
Abstract

With the growing incidence of Multi-Drug-Resistant Tuberculosis (MDR-TB) in newly identified patients, novel multimodality treatment methods are needed, aimed at reducing the time to sputum conversion and cavity healing, which would be applicable in MDR cases. Our experimental treatment consisted of the following: 1) chemotherapy based on the drug sensitivity profile, 2) local laser irradiation therapy for 25 days, and lymphotropic administration of isoniazid (to subcutaneous tissue in alternating locations: underarm area; fifth intercostal space along the sterna border; subclavian area where the first rib meets the sternum) in a daily dose of 10mg/kg 5 times a week. This treatment was significantly more effective in newly detected destructive MDR-TB versus the standard Category IV regimen for MDR-TB in terms of reduced time for sputum culture conversion and cavity healing, estimated to be 6 months after initiation of treatment.

Published
2016
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6. Loss and recovery of androgen receptor protein expression in the adult rat testis following androgen withdrawal by ethane dimethanesulfonate.

Author

Boycho Nikolov, Ekaterina Pavlova, Mariana Bakalska, Yvetta Koeva, Nina Atanassova, and Michail Davidoff

Subjects
Cytology, QH573-671
Abstract

Androgens are especially important for the maintenance of spermatogenesis in adulthood and the experimental withdrawal of testosterone (T) production by ethane dimenthanesulfonate (EDS) is a valuable tool for studying androgen-dependent events of spermatogenesis. The aim of the present study was to investigate the specific changes in immunoexpression of androgen receptor (AR) in the testis in relation to degeneration and regeneration of Leydig cell (LC) population and seminiferous epithelium. Immunohistochemistry for AR and 3beta-hydroxysteroid dehydrogenase (3beta-HSD) as well as TUNEL assay for apoptosis were performed on testicular sections of control and EDS-treated rats. Serum LH and T levels were measured by RIA. Our results revealed a total loss of AR immunoexpression from the nuclei of Sertoli (SCs), LCs and peritubular cells during the first week after EDS administration and that coincided with severe drop in T levels. Two weeks after EDS administration, the AR expression was recovered in these cells but normal stage-specificity in SCs was replaced by uniform intensity of AR immunostaining at all the stages of the spermatogenic cycle. The stage-specific pattern of androgen expression in SCs with a maximum at stages VII-VIII appeared 5 weeks after treatment. LC immunoreactivity for 3beta-HSD at different time points after EDS administration correlated with values of T concentration. The maximal germ cell apoptosis on day 7 was followed by total loss of elongated spermatids 2 weeks after EDS treatment. Regeneration of seminiferous epithelium 3 weeks after EDS administration and onwards occurred in tandem with the development of new LC population indicated by the appearance of 3beta-HSD-positive cells and gradual increase in T production. The specific changes in AR after EDS including their loss and recovery in Sertoli cells paralleled with degenerative and regenerative events in Leydig and germ cell populations, confirming close functional relationship between Sertoli, Leydig and germ cells.

Published
2006
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12. MAIN EXISTENTIAL CATEGORIES IN WORKS OF JOHN STEINBECK

Author

Svetlana VASILEVA and Ekaterina PAVLOVA

Subjects
General Medicine
Abstract

This article is devoted to the works of John Steinbeck from the position of the functioning of the main existential categories or "existentials" of human Being. Existentialism is considered here as a phenomenon that has gone beyond specific philosophy and literature and entered the cultural tradition as a conglomerate of issues that directly concern anthropology. Existential categories are derived as a result of the analysis of the philosophical and cultural base of existentialism, as well as by means of addressing a specific historical situation. The term "existential" belonging to M. Heidegger is interpreted here as a "base-forming value category", "pillar for existence" and is used as an element of literary analysis. The authors identify and investigate a number of existentials characteristic for literature and capable of being modified in the angle of the plot of a particular work. As a result of the study, it is concluded that in the works of J. Steinbeck, existential categories associated with the problem of human existence in a specific situation and representing the existentials of "support and overcoming" are the most frequent. This is a "dream", "hope", "meaning of life", which is directly related to the context recreated by the author. In general, the analysis of a literary work from the angle of the functioning of existential categories allows to analyse the work in its historical and cultural terms, as well as to make a deeper and more comprehensive characteristic of a literary character.

Published
2022
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13. Linguistic security in the context of value, ideological and social changes

Author

Ekaterina Pavlova

Abstract

The work is devoted to analyzing the phenomenon of human language and information security in modern media dis-course. This article examines some approaches to understanding communicative manipulation techniques through media coverage of «anti-vaxxers». The authors of the article carried out a discourse analysis of 100 media materials from the beginning of the pandemic in March 2020 to December 2021. The model of manipulation based on the image of the «enemy», its strategies and tactics are analyzed. The appearance of such concepts as «covid-dissidence» and «vaccin dissidence» and their impact on society are traced. According to the results of the study, the authors offered markers to identify signs of manipulation in mass media texts on the topic of «anti-vaxxers», such as the lexicon on fascist themes, lexicon on the themes of fear and aggression, invective words and the use of precedent personalities and phenomena for this topic. One of the mechanisms to counteract the negative communicative influence based on the National Security Strategy 2021 and announced by the President of the RF V. V. Putin is an obligatory elementary rhetorical training for schoolchildren and students in the system of secondary and higher education, forming skills of receptive and productive types of speech activity, speech interaction skills, dialogue skills, as well as improving the methods of teaching rhetoric in pedagogical universities with an emphasis on the meta-subject approach.

Published
2022
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14. Radical feminine and masculine media discourse in terms of linguistic security

Author

Ekaterina Pavlova

Abstract

This article examines the impact of radical gender media discourse and its substantive value attitudes on social media users. The main criterion is determined for classifying these discourses as being radical, as the manifestation of hatred as an underlying principle. The authors outline the reasons for the radicalization of the feminine and masculine media discourse. Each media discourse contains an axiological trust matrix, with the help of which the audience is captured and new users are involved, the archetypal models being used are analyzed. In total, 1,700 publications on the social network Vkontakte have been analyzed using the method of communicative content analysis through modeling quan-titative and qualitative data from January 01, 2020 to January 01, 2022. The article identifies the sub-discourses cov-ering the main semantic zones of radical feminists and masculists' media discourse in the Russian segment of the Inter-net and assuming a different explanation of the strategies to resist the oppression of women and men. Each sub-discourse presents the main thematic dominants. The threats in the radical feminine and masculine media discourse aimed at the destruction of the family and parenthood as social institutions are considered separately. The ways are outlined designed to cause rejection and hostility to the concept of «child» in the childhate sub-discourse. According to the authors of the study, the norm of modern masculinity and femininity, formed in new media, crystallized in the im-ages of the «digital troll man» and the «new Amazon»; they also describe the tools of linguistic security in social net-works.

Published
2022
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15. The Gene Expression of Proteins Involved in Intercellular Signaling and Neurodegeneration in the Substantia Nigra in a Mouse Subchronic Model of Parkinson’s Disease

Author

Anna Kolacheva, Ekaterina Pavlova, Alyona Bannikova, Vsevolod Bogdanov, Dmitry Troshev, and Michael Ugrumov

Subjects
dopaminergic neurons, mice, Organic Chemistry, neurodegeneration, General Medicine, Catalysis, Computer Science Applications, Inorganic Chemistry, PCR, substantia nigra, Parkinson’s disease, gene expression, Physical and Theoretical Chemistry, modeling of Parkinson’s disease, Molecular Biology, Spectroscopy
Abstract

Given the limited access to clinical material for studying the pathogenesis of Parkinson’s disease (PD), these studies should be carried out on experimental models. We have recently developed a subchronic model of the progressive development of PD with a gradual transition from the preclinical (asymptomatic) stage to the clinical (symptomatic) one. The aim of this study was to evaluate changes in the expression of a wide range of genes in the substantia nigra (SN), the central link in the regulation of motor function, in mice in our subchronic model of PD. We have found changes in the expression of a number of genes encoding enzymes involved in the synthesis and degradation of dopamine as well as proteins involved in the vesicular cycle, axonal transport, protein degradation in the proteasome system, neuroinflammation, and cell death in the SN of our mouse model of the clinical stage of PD. Similar changes in gene expression were previously demonstrated in patients (postmortem), indicating good reproducibility of PD in our model. Further analysis of the gene expression in the SN of mice has shown that the expression of some genes also changes in the model of the preclinical stage, when dopaminergic neurons have not yet died. Thus, this study opens up broad prospects for further evaluation of the molecular mechanisms of PD pathogenesis and the development of a test system for drug screening.

Published
2023
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16. Effects of Salinomycin and Deferiprone on Lead-Induced Changes in the Mouse Brain

Author

Emilia Petrova, Yordanka Gluhcheva, Ekaterina Pavlova, Ivelin Vladov, Peter Dorkov, Martin Schaier, Irena Pashkunova-Martic, Thomas H. Helbich, Bernhard Keppler, and Juliana Ivanova

Subjects
Inorganic Chemistry, Pb-induced neurotoxicity, mouse brain histology, Organic Chemistry, salinomycin, deferiprone, General Medicine, Physical and Theoretical Chemistry, essential elements, Molecular Biology, Spectroscopy, Catalysis, Computer Science Applications
Abstract

Lead (Pb) is a highly toxic heavy metal that has deleterious effects on the central nervous system. This study aimed to investigate the effects of salinomycin (Sal) and deferiprone (DFP) on brain morphology and on the content of some essential elements in Pb-exposed mice. Adult male Institute of Cancer Research (ICR) mice were exposed to a daily dose of 80 mg/kg body weight ( b.w.) Pb(II) nitrate for 14 days and subsequently treated with Sal (16 mg/kg b.w.) or DFP (19 mg/kg b.w.) for another 14 days. At the end of the experimental protocol, the brains were processed for histological and inductively coupled plasma mass spectrometry (ICP-MS) analyses. Pb exposure resulted in a 50-fold increase in Pb concentration, compared with controls. Magnesium (Mg) and phosphorus (P) were also significantly increased by 22.22% and 17.92%, respectively. The histological analysis of Pb-exposed mice revealed brain pathological changes with features of neuronal necrosis. Brain Pb level remained significantly elevated in Sal- and DFP-administered groups (37-fold and 50-fold, respectively), compared with untreated controls. Treatment with Sal significantly reduced Mg and P concentrations by 22.56% and 18.38%, respectively, compared with the Pb-exposed group. Administration of Sal and DFP ameliorated brain injury in Pb-exposed mice and improved histological features. The results suggest the potential application of Sal and DFP for treatment of Pb-induced neurotoxicity.

Published
2023
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18. Modeling of the Progressive Degradation of the Nigrostriatal Dopaminergic System in Mice to Study the Mechanisms of Neurodegeneration and Neuroplasticity in Parkinson’s Disease

Author

Anna Kolacheva, Alyona Bannikova, Ekaterina Pavlova, Vsevolod Bogdanov, and Michael Ugrumov

Subjects
Inorganic Chemistry, Parkinson’s disease, models of Parkinson’s disease, neurodegeneration, neuroplasticity, dopamine, dopaminergic neurons, nigrostriatal system, striatum, substantia nigra, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, mice, Organic Chemistry, General Medicine, Physical and Theoretical Chemistry, Molecular Biology, Spectroscopy, Catalysis, Computer Science Applications
Abstract

The fight against neurodegenerative diseases, including Parkinson’s disease (PD), is among the global challenges of the 21st century. The low efficiency of therapy is due to the late diagnosis and treatment of PD, which take place when there is already significant degradation of the nigrostriatal dopaminergic system, a key link in the regulation of motor function. We have developed a subchronic mouse model of PD by repeatedly administering 1–methyl–4–phenyl–1,2,3,6–tetrahydropyridine (MPTP) at gradually increasing doses with a 24 h interval between injections, a period comparable to the time of MPTP metabolism and elimination from the body. This model reproduces the main hallmarks of PD: progressive degeneration of dopaminergic neurons; the appearance of motor disorders with a 70–80% decrease in the level of dopamine in the striatum; an increase in dopamine turnover in the striatum to compensate for dopamine deficiency. When comparing the degradation of the nigrostriatal dopaminergic system and motor disorders in mice in the acute and subchronic models of PD, it has turned out that the resistance of dopaminergic neurons to MPTP increases with its repeated administration. Our subchronic model of PD opens up broad prospects for studying the molecular mechanisms of PD pathogenesis and developing technologies for early diagnosis and preventive treatment.

Published
2022
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21. Development of the Periventricular Nucleus as a Brain Center, Containing Dopaminergic Neurons and Neurons Expressing Individual Enzymes of Dopamine Synthesis

Author

Tatiana Pronina, Ekaterina Pavlova, Liliya Dil’mukhametova, and Michael Ugrumov

Subjects
Inorganic Chemistry, Organic Chemistry, General Medicine, Physical and Theoretical Chemistry, Molecular Biology, Spectroscopy, Catalysis, Computer Science Applications, brain, periventricular nucleus, dopaminergic neuron, dopamine, L-DOPA, tyrosine hydroxylase, aromatic L-amino acid decarboxylase, 3rd cerebral ventricle, rat, ontogenesis
Abstract

We have recently shown that the periventricular nucleus (PeVN) of adult rats is a “mixed dopaminergic (DAergic) center” containing three thousand neurons: DAergic neurons and those expressing one of the dopamine (DA)-synthesizing enzymes. This study aims to evaluate the development of the PeVN as a mixed DAergic center in rats in the perinatal period, critical for brain morphogenesis. During this period, the PeVN contains DAergic neurons and monoenzymatic neurons expressing individual enzymes of DA synthesis: tyrosine hydroxylase (TH) or aromatic L-amino acid decarboxylase (AADC). In the perinatal period, the total number of such neurons triples, mainly due to monoenzymatic neurons; the content of L-DOPA, the end product of monoenzymatic TH neurons, doubles; and the content of DA, the end product of monoenzymatic AADC neurons and DAergic neurons, increases sixfold. Confocal microscopy has shown that, in the PeVN, all types of neurons and their processes are in close relationships, which suggests their mutual regulation by L-DOPA and DA. In addition, monoenzymatic and DAergic fibers are close to the third cerebral ventricle, located in the subependymal zone, between ependymal cells and in the supraependymal zone. These observations suggest that these fibers deliver L-DOPA and DA to the cerebrospinal fluid, participating in the neuroendocrine regulation of the brain.

Published
2022

25. Alterations in Blood Metabolic Parameters of Immature Mice After Subchronic Exposure to Cobalt Chloride

Author

Olga P. Ajsuvakova, Emilia Petrova, Yordanka Gluhcheva, Anatoly V. Skalny, Ivelin Vladov, Ekaterina Pavlova, and Alexey A. Tinkov

Subjects
medicine.medical_specialty, Globulin, Endocrinology, Diabetes and Metabolism, media_common.quotation_subject, Clinical Biochemistry, Serum proteins, chemistry.chemical_element, 010501 environmental sciences, 01 natural sciences, Biochemistry, Inorganic Chemistry, 03 medical and health sciences, chemistry.chemical_compound, Internal medicine, Alkaline phosphatase, medicine, Urea, Immature mice, 0105 earth and related environmental sciences, media_common, 0303 health sciences, biology, Cholesterol, 030302 biochemistry & molecular biology, Biochemistry (medical), Albumin, Cobalt, General Medicine, Blood proteins, Endocrinology, chemistry, biology.protein, Reproduction
Abstract

The wide use of cobalt (Co) in food, industry, and medical devices requires full elucidation of its biological effects on tissues and organs. The aim was to assess serum metabolic alterations in immature mice after subchronic exposure to CoCl2. Pregnant ICR mice were subjected to a daily dose of 75 mg cobalt chloride/kg body weight (CoCl2x6H2O) 2-3 days before they gave birth, and treatment continued until days 25 and 30 after delivery. The compound was dissolved in and obtained with regular tap water. ICP-DRC-MS analysis showed significantly elevated serum Co2+ and diverse alterations in metabolic parameters of 25- and 30-day-old pups after exposure to CoCl2. Cholesterol and urea levels were significantly elevated in day 25 mice while HDL-C and LDL-C were reduced. In day 30, Co-exposed mice LDL-C and triglycerides were significantly increased while the total cholesterol level remained unchanged. Alkaline phosphatase was significantly reduced in day 25 Co-exposed mice. Blood glucose level of Co-exposed mice remained close to the untreated controls. Total protein content was slightly increased in day 30 mice. Co-exposure reduced albumin content and albumin/globulin ratio but increased significantly globulin content. Co administration showed strong correlation with cholesterol, urea, and HDL-C in both day 25 and 30 mice. Inverse correlation was found with alkaline phosphatase and albumin for day 25 and with triglycerides, globulin, and total protein content in day 30 Co-exposed mice. Subchronic CoCl2 exposure of immature mice induced significant changes in key metabolic parameters suggesting possible further disturbances in energy metabolism, osteogenesis, and reproduction.

Published
2020
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29. Development of early diagnosis of Parkinson's disease on animal models based on the intranasal administration of α-methyl-p-tyrosine methyl ester in a gel system

Author

Alexander Kim, Ekaterina Pavlova, Anna Kolacheva, Vsevolod Bogdanov, Liliya Dilmukhametova, Viktor Blokhin, Lev Valuev, Ivan Valuev, Marina Gorshkova, and Michael Ugrumov

Subjects
Pharmacology, Dopamine, Methyltyrosines, Parkinson Disease, General Medicine, Corpus Striatum, Mice, Inbred C57BL, Disease Models, Animal, Mice, Early Diagnosis, 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine, Animals, Humans, Administration, Intranasal
Abstract

The fight against neurodegenerative diseases, including Parkinson's disease (PD), is a global challenge of this century. The effectiveness of current PD therapy is limited, since it is diagnosed many years after the onset, following the death of most nigrostriatal dopaminergic neurons regulating motor function. PD treatment could be greatly improved if it was started at an early (preclinical) stage. For this purpose, it is necessary to develop an early diagnosis of PD, which is the goal of our study. We have developed an early diagnosis of PD on animal models using a provocative test by intranasal administration of α-methyl-p-tyrosine methyl ester (αMPTME), a reversible inhibitor of dopamine synthesis. First, we produced the provocative agent, αMPTME in gel, and showed its safety and penetration into the brain bypassing the blood-brain barrier. Then, the optimal dose of αMPTME and time after administration were selected, at which the level of dopamine in the striatum of intact animals decreases, but does not reach the 30% threshold for the appearance of motor disorders in PD patients. Finally, we proved on animal models that intranasal administration of αMPTME can serve as a diagnostic test for preclinical PD. Indeed, intranasal administration of αMPTME to mice in a model of PD at the preclinical stage reversibly reduced the dopamine level in the striatum to the 30% threshold causing short-term motor disorders. Thus, using animal models of PD, we have developed a provocative test for the preclinical diagnosis of PD, a fundamentally new technology in neurology.

Published
2022

31. Comparative Effects of Deferiprone and Salinomycin on Lead-Induced Disturbance in the Homeostasis of Intrarenal Essential Elements in Mice

Author

Yordanka Gluhcheva, Irena Pashkunova-Martic, Martin Schaier, Ivelin Vladov, Silviya Stoykova, Emilia Petrova, Ekaterina Pavlova, Peter Dorkov, Thomas H. Helbich, Bernhard Keppler, and Juliana Ivanova

Subjects
Male, kidneys, lead, deferiprone, salinomycin, essential elements, Drinking Water, Organic Chemistry, General Medicine, Catalysis, Computer Science Applications, Inorganic Chemistry, Mice, Animals, Homeostasis, Physical and Theoretical Chemistry, Molecular Biology, Spectroscopy, Chelating Agents, Pyrans
Abstract

Lead (Pb) exposure induces severe nephrotoxic effects in humans and animals. Herein, we compare the effects of two chelating agents, salinomycin and deferiprone, on Pb-induced renal alterations in mice and in the homeostasis of essential elements. Adult male mice (Institute of Cancer Research (ICR)) were randomized into four groups: control (Ctrl)—untreated mice administered distilled water for 28 days; Pb-exposed group (Pb)—mice administered orally an average daily dose of 80 mg/kg body weight (BW) lead (II) nitrate (Pb(NO3)2) during the first two weeks of the experimental protocol followed by the administration of distilled water for another two weeks; salinomycin-treated (Pb + Sal) group—Pb-exposed mice, administered an average daily dose of 16 mg/kg BW salinomycin for two weeks; deferiprone-treated (Pb + Def) group—Pb-exposed mice, administered an average daily dose of 20 mg/kg BW deferiprone for 14 days. The exposure of mice to Pb induced significant accumulation of the toxic metal in the kidneys and elicited inflammation with leukocyte infiltrations near the glomerulus. Biochemical analysis of the sera revealed that Pb significantly altered the renal function markers. Pb-induced renal toxicity was accompanied by a significant decrease in the endogenous renal concentrations of phosphorous (P), calcium (Ca), copper (Cu) and selenium (Se). In contrast to deferiprone, salinomycin significantly improved renal morphology in Pb-treated mice and decreased the Pb content by 13.62% compared to the Pb-exposed group. There was also a mild decrease in the renal endogenous concentration of magnesium (Mg) and elevation of the renal concentration of iron (Fe) in the salinomycin-treated group compared to controls. Overall, the results demonstrated that salinomycin is a more effective chelating agent for the treatment of Pb-induced alterations in renal morphology compared to deferiprone.

Published
2022
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32. Effects of subacute cadmium exposure and subsequent deferiprone treatment on cadmium accumulation and on the homeostasis of essential elements in the mouse brain

Author

Emilia Petrova, Irena Pashkunova-Martic, Martin Schaier, Yordanka Gluhcheva, Ekaterina Pavlova, Thomas H. Helbich, Bernhard Keppler, and Juliana Ivanova

Subjects
Male, Isoflurophate, Drinking Water, Brain, Phosphorus, Acetates, Biochemistry, Inorganic Chemistry, Mice, Selenium, Zinc, Animals, Homeostasis, Molecular Medicine, Deferiprone, Magnesium, Cadmium
Abstract

Cadmium (Cd) is а hazardous multi-organ toxin. In this study, we provide the first results about the effect of oral administration of deferiprone (DFP) on Cd accumulation and on the homeostasis of essential elements in the brain of Cd-exposed mice.Adult Institute of Cancer Research (ICR) male mice were randomized into four experimental groups: untreated controls - administered distilled water for 28 days; Cd-exposed group - exposed to 18 mg/kg body weight (b.w.) Cd(II) acetate for 14 days followed by the administration of distilled water for two weeks; Cd + DFP (low dose) - Cd-intoxicated mice subsequently treated with 19 mg/kg b.w. DFP for two weeks; and Cd + DFP (high dose) - Cd-exposed mice administered high-dose DFP (135 mg/kg b.w.) for 14 days. Brains were subjected to inductively coupled plasma-mass spectrometry (ICP-MS) and histological analysis.The results revealed that exposure of mice to Cd for 14 days significantly increased Cd concentration and significantly decreased magnesium (Mg), phosphorus (P), and zinc (Zn) contents in the brain compared to untreated controls. This effect was accompanied by necrotic-degenerative changes in both the cerebrum and cerebellum. Oral administration of low-dose DFP to Cd-exposed mice decreased the concentration of the toxic metal in the brain by 16.37% and restored the concentration of the essential elements to normal control values. Histological analysis revealed substantially improved cerebral and cerebellar histoarchitectures. In contrast, oral administration of high-dose DFP increased Cd content and significantly decreased selenium (Se) concentration in the brain. Necrotic neurons and Purkinje cells were still observed in the cerebral and cerebellar cortices.The results demonstrated that oral administration of DFP at low doses has a better therapeutic potential for the treatment of Cd-induced brain damage compared to high doses.

Published
2022
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33. The Sphingolipid Asset Is Altered in the Nigrostriatal System of Mice Models of Parkinson's Disease

Author

Victor Blokhin, Maria Shupik, Ulyana Gutner, Ekaterina Pavlova, Albert T. Lebedev, Olga Maloshitskaya, Vsevolod Bogdanov, Sergey Sokolov, Alice Alessenko, and Michael Ugrumov

Subjects
Sphingolipids, mice, dopaminergic nigrostriatal system, Dopaminergic Neurons, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, modeling of Parkinson’s disease, sphingolipids, enzymes, gene expression, mass spectrometry, high-performance liquid chromatography, real-time PCR, MPTP Poisoning, Biochemistry, Microbiology, QR1-502, Corpus Striatum, Article, Substantia Nigra, Animals, Molecular Biology
Abstract

Parkinson’s disease (PD) is a neurodegenerative disease incurable due to late diagnosis and treatment. Therefore, one of the priorities of neurology is to study the mechanisms of PD pathogenesis at the preclinical and early clinical stages. Given the important role of sphingolipids in the pathogenesis of neurodegenerative diseases, we aimed to analyze the gene expression of key sphingolipid metabolism enzymes (ASAH1, ASAH2, CERS1, CERS3, CERS5, GBA1, SMPD1, SMPD2, UGCG) and the content of 32 sphingolipids (subspecies of ceramides, sphingomyelins, monohexosylceramides and sphinganine, sphingosine, and sphingosine-1-phosphate) in the nigrostriatal system in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse models of the preclinical and clinical stages of PD. It has been shown that in PD models, the expression of five of the nine studied genes (CERS1, CERS5, ASAH1, ASAH2, and GBA1) increases but only in the substantia nigra (SN) containing dopaminergic cell bodies. Changes in the expression of enzyme genes were accompanied by an increase in the content of 7 of the 32 studied sphingolipids. Such findings suggest these genes as attractive candidates for diagnostic purposes for preclinical and clinical stages of PD.

Published
2021

38. Exposure to the bromodomain inhibitor N-methyl pyrrolidone blocks spermatogenesis in a hormonal and non-hormonal fashion

Author

Chafik Ghayor, Nupur Khera, Ekaterina Pavlova, Franz E. Weber, Nina Atanassova, University of Zurich, and Weber, Franz E

Subjects
0301 basic medicine, Male, medicine.medical_specialty, Chromosomal Proteins, Non-Histone, N-methyl pyrrolidone, 610 Medicine & health, Spermatocyte, Toxicology, BET inhibitor, Rats, Sprague-Dawley, 03 medical and health sciences, 0302 clinical medicine, In vivo, Internal medicine, medicine, Animals, Testosterone, BET inhibitors, Spermatogenesis, Pharmacology, Testicular atrophy, Dose-Response Relationship, Drug, Chemistry, 3005 Toxicology, medicine.disease, Bromodomains, Pyrrolidinones, Rats, 030104 developmental biology, medicine.anatomical_structure, Endocrinology, Teratogens, 3004 Pharmacology, 030220 oncology & carcinogenesis, Reproductive toxicology, Follicle Stimulating Hormone, 10069 Clinic of Cranio-Maxillofacial Surgery, Reproductive toxicity, Germ cell, Protein Binding
Abstract

N-methyl pyrrolidone (NMP) is an FDA approved molecule used as an excipient in pharmaceutical industry. Besides having a central role in formulation of drugs, the most important function of any excipient is to guarantee the safety of the medicine during and after its administration. Several studies have shown that exposure to NMP and especially in rats produce a gonadotoxic effect leading to infertility. However, the mechanisms underlying the effect of NMP on male reproduction are unknown. The aim of this study was to assess the reproductive toxicity of NMP in male rats and to elucidate the underlying mechanism. Male Sprague Dawley rats were injected intraperitoneally, twice/ week, at a dose of 108 mg/ 100 g of body weight with NMP. Analysis of reproductive parameters revealed testicular atrophy in NMP treated animals compared to control animals. Germ cell composition within the seminiferous tubules was disturbed and manifested in an increase in number of cells with fragmented DNA. A subsequent decrease in number of spermatocytes and spermatids was observed. Alpha screen assay shows that NMP acts at the concentrations we applied in vivo as a low affinity inhibitor for BRDT (testis specific bromodomain protein). BRDT inhibition is mirrored by a significant decrease in the expression of early stage spermatocyte markers (lmna, aurkc and ccna1), during which BRDT expression predominates. A significant decrease in testosterone levels was also observed. Since NMP interferes with spermatogenesis on various levels, its use in humans must be carefully monitored.

Published
2021
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39. Ameliorative effects of deferiprone and tetraethylammonium salt of salinomycinic acid on lead-induced toxicity in mouse testes

Author

Gunda Koellensperger, Bernhard K. Keppler, Ekaterina Pavlova, Emilia Petrova, Peter Dorkov, Martin Schaier, Juliana Ivanova, Irena Pashkunova-Martic, Thomas H. Helbich, and Yordanka Gluhcheva

Subjects
Male, medicine.medical_specialty, Health, Toxicology and Mutagenesis, chemistry.chemical_element, 010501 environmental sciences, Calcium, 01 natural sciences, chemistry.chemical_compound, Mice, Internal medicine, Testis, medicine, Animals, Environmental Chemistry, Chelation, Deferiprone, 0105 earth and related environmental sciences, Essential elements, Mice, Inbred ICR, Tetraethylammonium, Magnesium, General Medicine, Pollution, Endocrinology, chemistry, Distilled water, Lead, Male reproductive system, Toxicity, Salinomycin, Selenium
Abstract

In this study, we compare the effects of deferiprone (Def) and tetraethylammonium salt of salinomycinic acid (Sal) on lead (Pb)-induced toxicity in testes of Pb-exposed mice. Mature male ICR mice were allocated into four groups as follows: untreated control mice (ctrl)-received distilled water for 4 weeks; Pb-exposed mice (Pb)-subjected to 14-day Pb (II) nitrate administration at dose 80 mg/kg body weight (b.w.); Pb + Def group-Pb-exposed mice, treated with 20 mg/kg b.w. Def for 2 weeks; and Pb + Sal group-Pb-intoxicated mice, treated with 16 mg/kg b.w. Sal for 14 days. The results demonstrated that Pb exposure significantly increased blood and testicular Pb concentrations, decreased testicular calcium (Ca) content, significantly elevated testicular levels of magnesium (Mg), zinc (Zn), and selenium (Se) but did not significantly affect the endogenous contents of phosphorous (P) and iron (Fe) compared with untreated controls. Pb intoxication induced disorganization of the seminiferous epithelium. Def or Sal administration reduced blood Pb and testicular Pb concentrations in Pb-exposed mice compared with the Pb-intoxicated group. Mg, Zn, and Se concentrations in testes of Pb-exposed mice, treated with Def or Sal, remained higher compared with the untreated controls. Sal significantly increased testicular P concentration compared with untreated controls and significantly elevated the testicular Ca and Fe concentrations compared with the toxic control group. Both chelating agents improved testicular morphology to a great extent. The results demonstrate the potential of both compounds as antidotes for treatment of Pb-induced impairment of male reproductive function.

Published
2021
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40. Stage specific expression of angiotensin-converting enzyme and thickened lamina propria in relation to male fertility

Author

Mina Pencheva, Yvetta Koeva, Ekaterina Pavlova, and Nina Atanassova

Subjects
Male, Angiotensins, Fertility, Mucous Membrane, Humans, General Medicine, Seminiferous Tubules, Spermatogenesis
Abstract

Introduction: The testis is an immune privileged organ that provides a specific environment for germ cell development. Various factors responsible for inflammatory changes can lead to deterioration of the immune tolerant model found in the testis. As a result, the thickness of the proper membrane of seminiferous tubules changes and the process of spermatogenesis is disturbed. Aim: The purpose of the present study was to find the connection between the changes in the level of testis-specific isoform of angiotensin-converting enzyme (tACE) expression and the morphological changes of the seminiferous tubule wall of the testis in patients with infertility. Materials and methods: The study included 24 infertile men who underwent a testicular biopsy. Routine histological techniques, immunohistochemical reactions for tACE, α-smooth muscle actin, and morphometric analysis were performed to examine the biopsy preparations. Results: By using testicular biopsy to diagnose patients with infertility, a stage-specific pattern of the processes associated with thickened proper membrane of seminiferous tubules was established and a decreased or absent spermatogenic activity was observed. Conclusions: A significant increase in the proper membrane thickness of the seminiferous tubules in the testis was found in patients with infertility. This finding shows that the processes take place gradually over time, correlating with the degree of pathology, and that changes do not depend on the factors causing them. We also found that the degree of proper membrane thickening correlated with disturbances of spermatogenesis, using tACE expression as a marker for spermatogenic epithelium differentiation.&nbsp

Published
2020

41. N, N-Dimethylacetamide, an FDA approved excipient, acts post-meiotically to impair spermatogenesis and cause infertility in rats

Author

Ekaterina Pavlova, Anna K. Lindholm, Franz E. Weber, Nina Atanassova, Nupur Khera, Chafik Ghayor, University of Zurich, and Weber, Franz E

Subjects
Male, Health, Toxicology and Mutagenesis, 0208 environmental biotechnology, 02 engineering and technology, 010501 environmental sciences, reproductive toxicology, 01 natural sciences, male infertility, Male infertility, Rats, Sprague-Dawley, chemistry.chemical_compound, 2305 Environmental Engineering, Acetamides, Testis, Sperm motility, media_common, Epididymis, Sperm Count, Reproduction, General Medicine, Spermatozoa, Pollution, medicine.anatomical_structure, 2304 Environmental Chemistry, 2310 Pollution, Sperm Motility, Infertility, Environmental Engineering, media_common.quotation_subject, Fertility, 610 Medicine & health, 1600 General Chemistry, Dimethylacetamide, Excipients, Andrology, 2307 Health, Toxicology and Mutagenesis, medicine, Animals, Humans, Environmental Chemistry, Spermatogenesis, 0105 earth and related environmental sciences, Spermatid, urogenital system, Public Health, Environmental and Occupational Health, General Chemistry, N, N-Dimethylacetamide, medicine.disease, Sperm, Rats, 020801 environmental engineering, chemistry, 10069 Clinic of Cranio-Maxillofacial Surgery
Abstract

N, N-Dimethylacetamide is an FDA approved solvent widely used in pharmaceutical industry to facilitate the solubility of lipophilic, high molecular weight drugs with poor water solubility. However, the cytotoxic effects of DMA raises the concern about its use in clinical applications. In the present study, we address the effect of DMA on spermatogenesis. Male Sprague Dawley rats were injected intra-peritoneally for 8 weeks, once a week at a dose of 862 mg/kg. Analysis of reproductive parameters revealed that DMA treated animals exhibit spermatid formation defects within the testis describing the characteristics of oligozoospermia. A subsequent decrease in epididymal sperm concentration along with distortion of sperm morphology was observed. The mitochondrial and microtubule organization in the sperm is considerably modified by DMA. This disrupts the sperm kinetics thus decreasing the total and progressive sperm motility. Finally, DMA treatment resulted in loss of fertility. Our results indicate that exposure to DMA has a negative impact on spermatogenesis and leads to infertility in male rats by inhibiting the post meiotic stages of sperm development. Therefore, the use of DMA in humans must be closely monitored.

Published
2020
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42. Alterations in Blood Metabolic Parameters of Immature Mice After Subchronic Exposure to Cobalt Chloride

Author

Ivelin, Vladov, Emilia, Petrova, Ekaterina, Pavlova, Alexey A, Tinkov, Olga P, Ajsuvakova, Anatoly V, Skalny, and Yordanka, Gluhcheva

Subjects
Mice, Mice, Inbred ICR, Cholesterol, Pregnancy, Animals, Female, Cobalt, Triglycerides
Abstract

The wide use of cobalt (Co) in food, industry, and medical devices requires full elucidation of its biological effects on tissues and organs. The aim was to assess serum metabolic alterations in immature mice after subchronic exposure to CoCl

Published
2020

43. Tumor Suppressor PTEN Regulates Negatively Sertoli Cell Proliferation, Testis Size, and Sperm Production In Vivo

Author

Françoise Kühne, Yasmine Neirijnck, Pauline Sararols, Serge Nef, Michelangelo Foti, Nina Atanassova, Chloé Mayère, and Ekaterina Pavlova

Subjects
Male, 0301 basic medicine, endocrine system, medicine.medical_specialty, Sertoli cell proliferation, 030209 endocrinology & metabolism, Biology, Receptor, IGF Type 1, Mice, 03 medical and health sciences, Paracrine signalling, 0302 clinical medicine, Endocrinology, Somatomedins, Internal medicine, Testis, medicine, Animals, PTEN, ddc:576.5, Progenitor cell, ddc:612, Spermatogenesis, PI3K/AKT/mTOR pathway, Cell Proliferation, Insulin-like growth factor 1 receptor, Sertoli Cells, urogenital system, PTEN Phosphohydrolase, Sertoli cell, Receptor, Insulin, Cell biology, Insulin receptor, 030104 developmental biology, medicine.anatomical_structure, biology.protein
Abstract

The IGFs are the major intratesticular factors regulating immature Sertoli cell proliferation and are, therefore, critical to establish the magnitude of sperm production. However, the intratesticular source of IGF production and the downstream signaling pathway mediating IGF-dependent Sertoli cell proliferation remain unclear. Single-cell RNA sequencing on mouse embryonic testis revealed a robust expression of Igf1 and Igf2 in interstitial steroidogenic progenitors, suggesting that IGFs exert paracrine actions on immature Sertoli cells. To elucidate the intracellular signaling mechanism that underlies the proliferative effects of IGFs on immature Sertoli cells, we have generated mice with Sertoli cell-specific deletion of the Pten gene, a negative regulator of the phosphatidylinositol-3 kinase (PI3K)/AKT pathway, alone or together with the insulin receptor (Insr) and the IGF1 receptor (Igf1r). Although ablation of Pten appears dispensable for Sertoli cell proliferation and spermatogenesis, inactivation of Pten in the absence of Insr and Igf1r rescued the Sertoli cell proliferation rate during late fetal development, testis size, and sperm production. Overall, these findings suggest that IGFs secreted by interstitial progenitor cells act in a paracrine fashion to promote the proliferation of immature Sertoli cells through the IGF/PTEN/PI3K pathway.

Published
2018
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44. Dimerization of the ligand-binding domain is crucial for proper functioning of the androgen receptor

Author

Sarah, El Kharraz, primary, Christine, Helsen, additional, Vanessa, Dubois, additional, Florian, Handle, additional, Claude, Libert, additional, Martin, Van Royen, additional, Adriaan, Houtsmuller, additional, Claes, Ohlsson, additional, Matti, Poutanen, additional, Nina, Atanassova, additional, Ekaterina, Pavlova, additional, Dirk, Vanderschueren, additional, and Frank, Claessens, additional

Published
2020
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45. Losartan suppresses the kainate-induced changes of angiotensin AT 1 receptor expression in a model of comorbid hypertension and epilepsy

Author

Natasha Ivanova, Jana Tchekalarova, Zlatina Nenchovska, Nikolai Lazarov, Nina Atanassova, Dimitrinka Atanasova, and Ekaterina Pavlova

Subjects
0301 basic medicine, medicine.medical_specialty, Angiotensin receptor, Hippocampus, Kainate receptor, Status epilepticus, General Biochemistry, Genetics and Molecular Biology, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, Spontaneously hypertensive rat, Internal medicine, medicine, General Pharmacology, Toxicology and Pharmaceutics, Angiotensin II receptor type 1, business.industry, General Medicine, medicine.disease, 030104 developmental biology, Losartan, Endocrinology, cardiovascular system, medicine.symptom, business, hormones, hormone substitutes, and hormone antagonists, 030217 neurology & neurosurgery, circulatory and respiratory physiology, medicine.drug
Abstract

Aims Experimental and clinical studies have demonstrated that components of renin-angiotensin system are elevated in the hippocampus in epileptogenic conditions. In the present work, we explored the changes in the expression of angiotensin II receptor, type 1 (AT1 receptor) in limbic structures, as well as the effect of the AT1 receptor antagonist losartan in a model of comorbid hypertension and epilepsy. Main methods The expression of AT1 receptors was compared between spontaneously hypertensive rats (SHRs) and Wistar rats by using immunohistochemistry in the kainate (KA) model of temporal lobe epilepsy (TLE). The effect of losartan was studied on AT1 receptor expression in epileptic rats that were treated for a period of 4 weeks after status epilepticus. Key findings The naive and epileptic SHRs were characterized by stronger protein expression of AT1 receptor than normotensive Wistar rats in the CA1, CA3a, CA3b, CA3c field and the hilus of the dentate gyrus of the dorsal hippocampus but fewer cells were immunostained in the piriform cortex. Increased AT1 immunostaining was observed in the basolateral amygdala of epileptic SHRs but not of epileptic Wistar rats. Losartan exerted stronger and structure-dependent suppression of AT1 receptor expression in SHRs compared to Wistar rats. Significance Our results confirm the important role of AT1 receptor in epilepsy and suggest that the AT1receptor antagonists could be used as a therapeutic strategy for treatment of comorbid hypertension and epilepsy.

Published
2018
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47. Alterations in spermatogenesis following chronic exposure to cobalt chloride

Author

Ekaterina Pavlova, Emilia Petrova, Ivelin Vladov, Yordanka Gluhcheva, Anatoly V. Skalny, Veronika Mihaylova, and Alexey A. Tinkov

Subjects
Chronic exposure, Morphology, medicine.medical_specialty, Chemistry, General Medicine, Cobalt chloride, Cobalt, Endocrinology, Food Animals, Internal medicine, medicine, Animal Science and Zoology, Spermatogenesis
Abstract

Cobalt (Co) is an endocrine disruptor and a hypoxiamimicking agent. Its effect on spermatogenesis after prolonged administration remains unclear. The aim of the study was to assess chronic cobalt treatment on spermatogenesis. Pregnant mice were exposed to 75 mg (low dose) and/or 125 mg (high dose)/kg b.w. cobalt chloride (CoCl2×6H2O) with drinking water for 3 days before delivery and treatment continued until postnatal day 90. Age-matched control animals obtained regular tap water. At the end of the treatment, testes of control and Co-treated mice were excised and processed for histological and ICPMS analysis for metal content. Spermatozoa were isolated from both ductus deference and counted. Results showed a significant dose-dependent reduction in testicular index (testis weight to body weight ratio), up to 60% after treatment with 125 mg/kg and up to 34% after treatment with 75 mg/kg. Morphology of the testis was considerably affected in both doses of CoCl2 although in some tubules spermatogenesis was normal and completed. Diameter ofmany seminiferous tubules was significantly reduced and there was lack of lumen formation. We observed disorganization of seminiferous epithelium, islet of undifferentiated germ cells in luminal region of the tubules and presence of multinuclear germ cells. These findings corresponded to the significant reduction of sperm count by 2.15-fold for the low dose and 3.35-fold for the high dose. Chronic CoCl2 administration resulted in accumulation of the metal ions in the testes of the treated mice. The considerable impact of Co on male reproduction after chronic exposure shows negative correlation between metal concentration and male fertility.

Published
2020

48. Effect of acute sodium nitrite intoxication on some essential biometals in mouse spleen

Author

Juliana Ivanova, Ekaterina Pavlova, Emilia Petrova, Yordanka Gluhcheva, Tsvetomil Voyslavov, and Ivelin Vladov

Subjects
Male, medicine.medical_specialty, Antioxidant, mouse spleen, medicine.medical_treatment, Iron, Intraperitoneal injection, chemistry.chemical_element, Endogeny, Zinc, 010501 environmental sciences, Calcium, 01 natural sciences, Biochemistry, Inorganic Chemistry, 03 medical and health sciences, chemistry.chemical_compound, iron, 0302 clinical medicine, Internal medicine, medicine, Animals, Sodium nitrite, 0105 earth and related environmental sciences, chemistry.chemical_classification, Mice, Inbred ICR, sodium nitrite, calcium, Sodium Nitrite, Spectrophotometry, Atomic, zinc, Mouse Spleen, Enzyme, Endocrinology, chemistry, Metals, Acute Disease, Molecular Medicine, 030217 neurology & neurosurgery, Spleen
Abstract

Background and aim Sodium nitrite (NaNO2) is an inorganic salt with numerous applications in a variety of industries, as well as in medicine. Nevertheless, exposure to high levels of NaNO2 is toxic for animals and humans. Sodium nitrite intoxication is shown to decrease the activity of major antioxidant defence enzymes which is dependent on the maintenance of specific ion equilibrium. The aim of the present study was to investigate the effect of acute NaNO2 intoxication on the content of the essential metals iron (Fe), calcium (Ca) and zinc (Zn) in mouse spleen. Methods Mature male ICR mice were divided into four groups and subjected to acute NaNO2 exposure by a single intraperitoneal injection of 120 mg/kg body weight. Animals in each group were sacrificed at certain time interval after treatment (1 h, 5 h, 1 day and 2 days). Spleens were excised and processed for atomic absorption spectrometry analysis of Fe, Ca and Zn content. Results At the first hour after treatment, a decrease in Fe and Ca levels was observed. One day following NaNO2 administration, Zn concentration reached its lowest value and Ca levels remained lower, compared to the untreated controls. In contrast, Fe concentration increased on the first and second day after treatment. Conclusion The results of the present study demonstrate that acute NaNO2 intoxication provokes changes in the endogenous levels of Fe, Ca and Zn in mouse spleen. These findings suggest disruption of the ionic balance and impact on the activity of antioxidant defence enzymes.

Published
2019

49. Dulaglutide and renal outcomes in type 2 diabetes: an exploratory analysis of the REWIND randomised, placebo-controlled trial

Author

Hertzel C Gerstein, Helen M Colhoun, Gilles R Dagenais, Rafael Diaz, Mark Lakshmanan, Prem Pais, Jeffrey Probstfield, Fady T Botros, Matthew C Riddle, Lars Rydén, Denis Xavier, Charles Messan Atisso, Leanne Dyal, Stephanie Hall, Purnima Rao-Melacini, Gloria Wong, Alvaro Avezum, Jan Basile, Namsik Chung, Ignacio Conget, William C Cushman, Edward Franek, Nicolae Hancu, Markolf Hanefeld, Shaun Holt, Petr Jansky, Matyas Keltai, Fernando Lanas, Lawrence A Leiter, Patricio Lopez-Jaramillo, Ernesto German Cardona Munoz, Valdis Pirags, Nana Pogosova, Peter J Raubenheimer, Jonathan E Shaw, Wayne H-H Sheu, Theodora Temelkova-Kurktschiev, Mercedes Abella, Andrea Alebuena, Sandra Almagro, Eduardo Amoroso, Paula Anadon, Elizabeth Andreu, Guillermo Aristimuño, Maria Arzadun, Maria Barbieri, Raul Barcudi, Ines Bartolacci, Gabriel Bolobanich, Anselmo Bordonava, Miguel Bustamante Labarta, Betina Bustos, Alberto Caccavo, Alejandra Camino, Maria Cantero, Maria Carignano, Luis Cartasegna, Marcela Cipullo, Víctor Commendatore, Victoria Conosciuto, Osvaldo Costamagna, Claudia Crespo, Jose Cuello, Carlos Cuneo, Sandra Cusimano, Sofia Dean, Claudio Dituro, Andrea Dominguez, Miguel Farah, Alberto Fernandez, Florencia Fernandez, Adriana Ferrari, Patricia Flammia, Jose Fuentealba, Karina Beatriz Gallardo, Celso Garcia, Ruben Garcia Duran, Marcelo Garrido, Rodolfo Gavicola, Claudio Gerbaudo, Graciela Gilli, Ana Paula Giotto, Pedro Godoy Bolzán, Oscar Gomez Vilamajo, Fernando Guerlloy, Cristian Guridi, Narcisa Gutierrez Garrido, Eduardo Hasbani, Sonia Hermida, Miguel Hominal, Adrian Hrabar, Adrián Ingaramo, Alejandra Izzicupo, Mario Krynski, Mariana Lagrutta, Paulina Lanchiotti, Maria Langhe, Veronica Leonard, Javier Llanos, Ricardo Lopez Santi, Jorge Lowenstein, Cecilia Luquez, Ignacio Mackinnon, Melina Mana, Sara Manzur, Javier Marino, Carolina Martella, Roger Martinez, Re Matias, Javier Matkovich, Monica Meritano, Oscar Montaña, María Mulazzi, Juan Ochoa, Gustavo Paterlini, María Pelagagge, Maria Elena Peralta Lopez, Aldo Prado, Lorena Pruyas, Martín Racca, Carola Ricotti, Carolina Rodriguez, Mariano Romero Vidomlansky, Ricardo Ronderos, Ana Laura Sadowski, Jorgelina Sala, Alejandro Sánchez, Andrea Santoro, Lilia Schiavi, Mariano Sein, Virginia Sernia, Leonardo Serra, Maximiliano Sicer, Tomas Smith, Leonardo Soso, Georgina Sposetti, Andrea Steinacher, Jorge Stival, Jorge Tedesco, Hugo Tonin, Mauro Tortolo, Maria Ulla, Julio Vallejos, Marisa Vico, Luciana Virgillito, Virginia Visco, Daniel Vogel, Florencia Waisman, César Zaidman, Noemi Zucchiatti, Imran Badshah, Neale Cohen, Peter Colman, David Colquhoun, Timothy Davis, Spiros Fourlanos, Greg Fulcher, Jane Hamlyn, Cilla Haywood, Samantha Hocking, Maeve Huchinson, William Jeffries, Mervyn Kyl, Clement Lo, PeakMann Mah, Ashley Makepeace, Dolly Marope, Natalie Nanayakkar, Alison Nankervis, Neil Palmer, Barbara Palolus, Satish Pillai, Sarah Price, Joseph Proietto, Anne Reutens, Natassia Rodrigo, Abdul Sheikh, Greg Smith, Michelle So, Georgia Soldatos, Bronwyn Stuckey, Priya Sumithran, Helena Teede, Parind Vora, Lyn Williams, Eduardo Abib, Christiani Adão Poço, Érica Ferreira Alves, Janaina Andreatta Bernardi Barea, Livia Avezum Oliveira, Denise Ludovico da Costa de Castro, Ivan Correa da Cruz, Midiã Costa, Ivan Cruz, Sidney Cunha, Marco Antonio Vieira Da Silva, Renata de Carvalho Camara Bona, Bruna de Paula, Freddy Eliaschewitz, Guilherme Fazolli, Carlos Alberto Ferreira Filho, Jose Fortes, Cesar França, Denise Reis Franco, Paulo Roberto Genestreti, Flavio Giorgeto, Rodrigo Marques Gonçalves, Michele Elka Grossman, Ana Claudia Henrique Marcelino, Mauro Hernandes, Ana Horta, Cristiano Jaeger, Midia Kaneblai, Cecilia Kauffman Rutenberg, Jose Francisco Kerr Saraiva, Maria Angelica Lemos, Lilia Maia, Euler Roberto Manenti, Mariana Marques, Cynthia Melissa Valerio, Rodrigo Moreira, Flávia Mothé, Osana Maria Mouco, Philip Moura, José Carlos Moura Jorge, Carlos Nakashima, Marcelo Nakazone, Thiago Napoli, Cristiane Nunes, Joao Eduardo Nunes Salles, Karla Oliveira, Marcela Oliveira, Gracielly de Souza Pantano, Fabio Petri, Leonardo Piazza, Andreia Carla Pires, Patricia Pizzato, Sergio Prata, Dalton Precoma, Rafael Rech, Gilmar Reis, Heleno Reis, Elisabete Resende, Jose Ribas Fortes, Sylka Rodovalho, Fabio Rossi dos Santos, Joao Eduardo Salles, Célia Regina Sampaio, Thiago Santos, Vanessa Santos dos Santos, Tulio Silva e Quadros, Daniel Silveira, Katia Nunes Siqueira, M Teireira, Marcelo Uehara, C Valerio, Henrique Vianna, Maria Helena Vidotti, Guilherme de Lima Visconti, Maria Teresa Zanella, Viktoriya Andreeva, Radoslav Borisov, Nikolay Botushanov, Georgi Dimitrov, Kameliya Dimova, Tsvetan Dragoychev, Valentina Grigorova, Valentina Gushterova, Ivaylo Ivanov, Tatyana Kocelova, Dimo Kurktschiev, Milena Miletieva, Neli Nenkova-Gugusheva, Ralitsa Pancheva, Maria Pavlova, Dimitar Raev, Vesela Spasova, Anastas Stoikov, Dimitar Troev, Todor Yanev, Mariana Yoncheva-Mihaylova, Alexander Abitbol, Buki Ajala, Abdullh Alguwaihes, Jean-Luc Ardilouze, Nahla Aris-Jilwan, Amel Arnaout, Ronnie Aronson, Nadeem Aslam, Sandra Babin, Jean-Patrice Bailargeon, Allan Bailey, Harpreet Bajaj, Christian Beauchesne, Sorin Beca, Andre Belanger, Alan Bell, Diego Bellabarba, Lori Berard, Brian Berenbaum, Vincent Bergeron, Joseph Berlingieri, Frédéric Bernier, Phoebe Bishara, David Blank, Ian Blumer, Suzanne Brault, Donald Breton, André Carpentier, James Cha, Prakash Chandra, Jean-Louis Chiasson, James R Conway, Ghyslaine Couture, Nathalie Couture, Gilles Dagenais, Dyotirmoy Datta, Giuseppe D'Ignazio, Richard Dumas, Didier Fay, Andre Frechette, Louise Frenette, Daisy Fung, Nathalie Gagnon, Meri Galter, Jean Garon, Jean Sebastien Gauthier, Christian Geadah, Jeremy Gilbert, Ronald Girard, Ronald Goldenberg, Loren David Grossman, Nikhil Gupta, Jean-Pierre Halle, Marie-France Hivert, Ghislaine Houde, Robyn Houlden, Irene Hramiak, Ted Jablonski, Akshay Jain Jain, Hasnain Khandwala, Munish Khosla, C Lachance, Emilie Laflamme, Marie-France Langlois, Luc Larivee, Joanne Liutkus, Heather Lochnan, Saleem Malik, Charlotte McDonald, Pravinsagar Mehta, John Mihailidis, Alain Milot, Priya Narula, Patrice Nault, Arun Nayar, William Nisker, Gilles Ouellet, Jean Palardy, Minta Patel, Terri Paul, Sue Pedersen, Patrice Perron, Marie-Hélène Pesant, Paul Poirier, Marie-Claude Poulin, Zubin Punthakee, Waheed Rehman, Stuart Ross, P Sagar, Nouhad Saliba, Sam Sandler, Alicia Schiffrin, Robert Schlosser, Anila Seth-Sharma, Mark Sherman, David Sionit, Tharsan Sivakumar, Juan Soto, Eric St-Amour, Oren Steen, Jack Sussman, Adam Telner, Sheldon Tobe, David-Yaw Twum-Barima, Audrey Van Zanten, Nicole VanRossum, Jonathan Vecchiarelli, Rick Ward, John Wessengel, Stanley Weisnagel, Igor Wilderman, Vincent Woo, Natalia Yakubovich, Jean-Francois Yale, Zeina Yared, Monica Acevedo, Maria Loreto Aguirre, Andres Aizman, Maria Soledad Barroso, Leonardo Cobos, Alfredo Danin Vargas, Barbara Descalzi, Gonzalo Godoy, Elio Grumberg, Rodolfo Lahsen, Gladys Larenas, Eugenia Ortiz, Javier Paredes, Sergio Potthoff, Eva Retamal, Luis Rojas, Manuel Salgado, Claudio Santibanez, Carmen Solis, Benjamin Stokins, Jose Accini, Javier Acebedo, Lina Maria Agudelo Baena, Soraya Alarcon, Juliana Angel, Edgar Arcos, M Aroca Martinez, Leonor Atuesta, Jose Balaguera, Doris Ballestas, Sandra Isabel Barrera, Rosmy Barrios Reyes, Adolfo Bayona, Andres Bermudez, Diego Zarate Bernal, Marco Blanquicett, Victor Bravo, Wendy Bueno, Alvaro Burbano Delgado, Alberto Cadena, Andres Cadena, Sandra Caicedo, Carlos Celemin, Ricardo Consuegra, Cristhian Contreras Pimienta, Kelly Johenis Corredor, Carlos Cure, Lizeth Dayana De La Hoz Rueda, Erika Delgado, Sarahy Diaz, Marta Diego, Anabell Donado, William Encinales Sanabria, Juliana Escobar, Gillian Escorcia, Leonardo Forero, Laura Fuentes, Maria Garcia, Henry Garcia Lozada, Luis Garcia Ortiz, Angela Giraldo, Laura Gomez Gonzalez, Javier Granada, Corina Gutierrez, Natalia Henao, Edwin Hernandez, Olga Maria Herrera Uejbe, Juan Diego Higuera Cobos, Jaime Ibarra Gómez, Edwin Hernandez Jaimes, Monica Jaramillo, Nicolas Jaramillo, Carlos Jaramillo Gomez, Monica Jaramillo Sanchez, Ivonne Jarava Durán, Catalina Lopez Ceballos, Claudia Madrid, Elias María Amastha, Jennifer Mercado, Dora Ines Molina, Jessica Molina Soto, Carlos Montoya, Alexander Morales, Carolina Muñoz, Luis Alejandro Orozco, Oscar Osorio, Jorge Mario Palmera Sanchez, Adwar Peña, Jose Perez, Juan Perez Agudelo, Germán Pérez Amador, Carlos Pertuz, Irina Posada, Carlos Puerta, Adalberto Quintero, Diana Quiroz, Carmen Rendon, Alberto Reyes, Alvaro Reyes, Diana Ripoll, Carlos Rivera, Maria Rocha, Jose F Rodriguez, Kervis Asid Rodriguez Villanueva, Javier Emilio Rodriguez Zabala, Sindy Rojas, Maria Romero, Ricardo Rosero, Angelica Rocio Rosillo Cardenas, Lina Rueda, Gregorio Sanchez, Tatiana Sanchez, Arístides Sotomayor Herazo, Monica Suarez, Mariana Torres, Freddy Trujillo, Miguel Urina, Lazaro Van Strahlen, Carlos Velandia, Carolina Velasquez Guzman, Elizabeth Velazquez, Tatiana Vidal Prada, Juan Pablo Yepez Alvaran, Diego Zarate, Jana Andelova, Radka Benesova, Barbara Buzova, Vladimir Cech, Ida Chodova, Miroslav Choura, Antonin Dufka, Andrea Gamova, Jakub Gorgol, Tomas Hala, Hana Havlova, Dagmar Hlavkova, Petra Horanska, Juliana Ilcisin-Valova, Petra Jenickova, Ondrej Jerabek, Ilona Kantorova, Katerina Kolomaznikova, Iva Kopeckova, Miroslava Kopeckova, Karel Linhart, Tomas Linhart, Jan Malecha, Emilia Malicherova, Dana Neubauerova, Martina Oznerova, Radan Partys, Eva Pederzoliova, Maria Petrusova, Vera Prymkova, Eva Racicka, Ida Reissova, Eva Roderova, Libor Stanek, Alena Striova, Dana Svarcova, Petr Svoboda, Emilia Szeghy Malicharova, Jan Urge, Ladislav Vesely, Bedich Wasserburger, Hilde Wasserburgerova, Emil Zahumensky, Vaclav Zamrazil, Hasan Alawi, Ernestos Anastasiadis, Elisabeth Axthelm, Tasso Bieler, Christina Buhrig, Elizaveta Degtyareva, Frank Dellanna, Karl-Michael Derwahl, Stephan Diessel, Barbara Dogiami, Kirsten Dorn-Weitzel, Monika Ernst, Grit Faulmann, Baerbel Fetscher, Thomas Forst, Gabriele Freyer-Lahres, Klaus Funke, Xenia Ganz, Christiane Gleixner, Christoph Hanefeld, Sven Heinrichs, Stephanie Helleberg, Elena Henkel, Gerd Ruediger Hetzel, Caren Hoffmann, Frohmut Jacob, Stephan Jacob, Franziska John, Antonius Jonczyk, Wolfram Kamke, Christiane Klein, Martina Kleinhardt, Werner Kleophas, Christine Kosch, Kristin Kreutzmann, Achim Kühn, Young Hee Lee-Barkey, Alexander Lier, Sarah Maatouk, Joachim Minnich, Michael Mitry, Ilona Muessig, Diana Nicula, Martina Niemann, Joerg Nothroff, Petra Ott, Andreas Pfuetzner, Andreas Pfützner, Frank Pistrosch, Wildgard Pohl, Zdenka Prochazkova, Marlena Retkowska, Heiko Rosin, Daniela Sachsenheimer, Holger Samer, Mazin Sanuri, Axel Schaefer, Frank Schaper, Erik-Delf Schulze, Marita Schulze, Martina Schumann, Thomas Segiet, Veronika Sowa, Hans-Detlev Stahl, Franziska Steinfeldt, Madlen Teige, Bjoern Trieb, Diethelm Tschoepe, Peter Uebel, Bernd Warken, Ingo Weigmann, Klaus Weyland, Klara Wilhelm, Timea Balo, Miklos Balsay, Ilona Bende, Katalin Bezzegh, Zita Birkus, Barbara Buday, Melinda Csomai, Laszlo Deak, Eniko Dezso, Peter Faludi, M Faluvegi, Ilona Fazekas, Agota Feher, Csaba Fejer, Ervin Finta, Agnes Fulcz, Zsolt Gaal, Mihaly Gurzo, Krisztina Hati, Gabriella Herczeg, Ildiko Jozsef, Marta Juhasz, Katalin Keltai, Laszlo Koranyi, Eniko Kulcsar, Krisztina Kun, Andrea Laczko, Botond Literáti-Nagy, Izabella Mezo, Margit Mileder, I Moricz, Károly Nagy, Bela Nagybaczoni, Csaba Nemeth, Agnes Oze, Jozsef Pauer, Eva Peterfai, Bela Polocsanyi, Ferenc Poor, István Reiber, Csaba Salamon, Julia Sebestyen, Ildiko Torok, Marianna Tuu, Andrea Varga, Viktor Vass, Chul Min Ahn, Chulwoo Ahn, Park ByungWon, Hyuk-Jae Chang, Kiyuk Chang, Eui-Young Choi, Han Seok Choi, Jin-Wook Chung, Bum- Kee Hong, Young Joon Hong, Min Su Hyon, Myung Ho Jeong, Shinae Kang, Byeong-Keuk Kim, Ji-Hyun Kim, Ju Han Kim, Kee-Sik Kim, Moo Hyun Kim, Pum-Joon Kim, Soon-Kil Kim, Yong-Seok Kim, Young Kwon Kim, Yoon Seok Koh, Hyuck Moon Kwon, Byoung Kwon Lee, Byung-Wan Lee, Jin Bae Lee, Myoung-Mook Lee, Young-Mee Lim, Pil Ki Min, Jong Sung Park, Jongsuk Park, Keun Ho Park, Sungha Park, Wook Bum Pyun, Se Joong Rim, Dong-Ryeol Ryu, Hong-Seog Seo, Ki Bae Seung, Dong-Ho Shin, Doo Sun Sim, Young Won Yoon, Ilze Andersone, Kristine Babicka, Inga Balcere, Roberts Barons, Inguna Capkovska, Kristine Geldnere, Inese Grigane, Baiba Jegere, Ilze Lagzdina, Lija Mora, Sigita Pastare, Rota Ritenberga, Janina Romanova, Inta Saknite, Natalja Sidlovska, Jelena Sokolova, Sandra Steina, Iveta Strizko, Dace Teterovska, Brigita Vizina, Lina Barsiene, Gintare Belozariene, Laura Daugintyte-Petrusiene, Nijole Drungiliene, Nijole Garsviene, Ala Grigiene, Vytautas Grizas, Virginija Jociene, Dalia Kalvaitiene, Jugeta Kaupiene, Jurate Kavaliauskiene, Dalia Kozloviene, Ilona Lapteva, Birute Maneikiene, Jolanta Marcinkeviciene, Vaidilija Markauskiene, Salomeja Meiluniene, Almantas Norkus, Rita Norviliene, Vladimiras Petrenko, Ruta Radzeviciene, Gintare Sakalyte, Gediminas Urbonas, Skaiste Urbutiene, Donatas Vasiliauskas, Dzilda Velickiene, Carlos Aguilar, Marco Alcocer, Juan Antonio Avalos-Ramirez, Ramiro Banda-Elizondo, Rubria Bricio-Ramirez, Karla Cardenas Mejia, Francisco Cavazos, Jesus Chapa, Erika Cienfuegos, Astrid De la Peña, Gilberto de la Peña Topete, Manuel Odin De los Rios Ibarra, Daniel Elias, Claudia Flores-Moreno, Pedro Garcia Hernandez, Luis Gerardo Gonzalez, Rosa Linda Guerra Moya, Arturo Guerra-Lopez, Raymundo Hernandez Baylon, Carolina Herrera Colorado, Marisol Herrera-Marmolejo, Neri Islas-Palacios, Esteban Lopez, Fernando Lopez, Agustin Lopez Alvarado, Rosa Isela Luna Ceballos, Enrique Morales Villegas, Gualberto Moreno-Virgen, Rosa Linda Parra Perez, Sara Pascoe Gonzalez, Irving Peralta-Cantu, Roopa Previn, Rosa Ramirez, Rubria Ramirez, Maria Guadalupe Ramos Zavala, Monica Rodriguez, Rocio Salgado-Sedano, Ana Claudia Sanchez-Aguilar, Edith Santa Rosa Franco, Leobardo Sauque-Reyna, Rodrigo Suarez Otero, Ivonne Torres, Enrique Velarde-Harnandez, Juan Villagordoa, Efrain Villeda-Espinoza, Jorge Vital-Lopez, Cristian Jair Zavala- Bello, John Baker, Elaine Barrington-Ward, Thomas Brownless, Richard Carroll, Simon Carson, Michelle Choe, Andrew Corin, Brian Corley, Richard Cutfield, Neelam Dalaman, Paul Dixon, Paul Drury, Keith Dyson, Chris Florkowski, Monica Ford, William Frengley, Colin Helm, Colin Katzen, Jane Kerr, Manish Khanolkar, David Kim, Renata Koops, Jeremy Krebs, Robert Leikis, Kwan Low, Alison Luckey, Richard Luke, Susan Macaulay, Rodney Marks, Catherine McNamara, Dean Millar-Coote, Steven Miller, Naomi Mottershead, James Reid, Narcisa Robertson, Ian Rosen, David Rowe, Ole Schmiedel, Russell Scott, Jeffrey Sebastian, Davitt Sheahan, Victoria Stiebel, Ian Ternouth, Chris Tofield, Dirk Venter, Michael Williams, Miles Williams, Fiona Wu, Simon Young, Malgorzata Arciszewska, Anna Bochenek, Piotr Borkowski, Przemyslaw Borowy, Tomasz Chrzanowski, Edward Czerwinski, Marek Dwojak, Agnieszka Grodzicka, Izabela Janiec, Joanna Jaruga, Ewa Krystyna Jazwinska-Tarnawska, Krystyna Jedynasty, Danuta Juzwiak-Czapiewska, Jadwiga Karczewicz-Janowska, Jan Konieczny, Marek Konieczny, Marek Korol, Maciej Kozina, Ewa Krzyzagorska, Ewa Kucharczyk-Petryka, Roman Laz, Anna Majchrzak, Zdzislawa Mrozowska, Michal Mularczyk, Elzbieta Nowacka, Jadwiga Peczynska, Robert Petryka, Radoslaw Pietrzak, Dorota Pisarczyk-Wiza, Aleksandra Rozanska, Zofia Ruzga, Emilia Rzeszotarska, Malgorzata Sacha, Marzenna Sekulska, Anna Sidorowicz-Bialynicka, Teresa Stasinska, Agnieszka Strzelecka-Sosik, Teresa Swierszcz, Katarzyna Miroslawa Szymkowiak, Olga Turowska, Krystyna Wisniewska, Maciej Wiza, Iwona Wozniak, Katarzyna Zelazowska, Bernadetta Ziolkowska-Gawron, Danuta Zytkiewicz-Jaruga, Adrian Albota, Carmina Alexandru, Rodica Avram, Cornelia Bala, Diana Barbonta, Roxana Barbu, Daniela Braicu, Nicoleta Calutiu, Doina Catrinoiu, Anca Cerghizan, Alina Ciorba, Anca Craciun, Rodica Doros, Livia Duma, Ancuta Dumitrache, Ioana Ferariu, Anca Ferician Moza, Alexandrina Ghergan, Gheorghe Ghise, Mariana Graur, Mihaela Gribovschi, Bogdan Mihai, Laura Mihalache, Madalina Mihalcea, Nicoleta Mindrescu, Magdalena Morosanu, Andrea Morosoanu, Maria Mota, Anca Moza, Valerica Nafornita, Narcisa Natea, Simona Nicodim, Cristina Nita, Adriana Onaca, Mircea Onaca, Cristina Pop, Lavinia Pop, Amorin Popa, Alexandrina Popescu, Luchiana Pruna, Gabriela Roman, Mihaela Rosu, Alexandra Sima, Doina Sipciu, Carmen Narcisa Sitterli-Natea, Iosif Szilagyi, Minodora Tapurica, Adrian Tase, Adriana-Carmen Tutescu, Luminita Vanghelie, Ioana Verde, Adrian Vlad, Mihaela Zarnescu, Roman Akhmetov, Irina Allenova, Irina Avdeeva, Oksana Baturina, Irina Biserova, Nikolay Bokovin, Irina Bondar, Natalia Burova, Galina Chufeneva, Elena Chumachek, Marina Demidova, Alexander Demin, Vera Drobysheva, Irina Egorova, Lev Esenyan, Ekaterina Gelig, Sergey Gilyarevsky, Maria Golshmid, Arseniy Goncharov, Anastasia Gorbunova, Ivan Gordeev, Vera Gorelysheva, Tatiana Goryunova, Irina Grebenshchikova, Roman Ilchenko, Maria Ivannikova, Saule Karabalieva, Juliya Karpeeva, Elena Khaykina, Zhanna Kobalava, Irina Kononenko, Oxana Korolik, Anna Korshunova, Victor Kostenko, Irina Krasnopevtseva, Ludmila Krylova, Polina Kulkova, Irina Kuzmina, Alla Ledyaeva, Sergey Levashov, Natalia Lokhovinina, Vadim Lvov, Narine Martirosyan, Sergey Nedogoda, Rostislav Nilk, Yulia Osmolovskaya, Alexey Panov, Olga Paramonova, Ekaterina Pavlova, Elena Pekareva, Nina Petunina, Svetlana Ponamareva, Galina Reshedko, Alla Salasyuk, Malvina Sepkhanyan, Alexandr Serebrov, Olesya Shabelnikova, Andrey Skvortsov, Olga Smirnova, Oxana Spiridonova, Svetlana Strogova, Evgeny Taratukhin, Sergey Tereschenko, Lubov Trukhina, Olga Tsarkova, Vera Tsoma, Farid Tumarov, Natalya Tyan, Tatiana Tyurina, Svetlana Villevalde, Elena Yankovaya, Ludmila Zarutskaya, Elena Zenkova, Aysha Badat, Frederik Bester, Suzanne Blignaut, Dirk Blom, Susan Booysen, Warren Boyd, Brigitte Brice, Susan Brown, Lesley Burgess, Reina Cawood, Kathleen Coetzee, Hillet Conradie, Tanja Cronje, Douwe de Jong, Graham Ellis, Shaunagh Emanuel, Ingrid Engelbrecht, Sharne Foulkes, Done Fourie, Gilbert Gibson, Thirumani Govender, Sumayah Hansa, Allana Colleen Hemus, Firzana Hendricks, Marshall Heradien, Chantelle Holmgren, Zaheer Hoosain, Emile Horak, Johannes Howard, Ignatius Immink, E. Janari, Daksha Jivan, Karl Klusmann, Weik Labuschagne, Yen-yu Lai, Gulam Latiff, J. Lombaard, Hanlie Lottering, Ronel Meeding, Shirley Middlemost, Haroon Mitha, Ismail Mitha, Sandile Mkhwanazi, Rajendran Moodley, Almeri Murray, Dany Musungaie, Yasmin Osman, Kirsten Peacey, Larisha Pillay-Ramaya, Catharina Pretorius, Hans Prozesky, Mahomed Sarvan, E Scholtz, Attila Sebesteny, Bianca Skinner, Michael Skriker, M Smit, Anna-Marie Stapelberg, Nicolaas Swanepoel, Dorothea Urbach, Dina van Aswegen, Francois van Zyl, Louis Van Zyl, Esme Venter, Shahid Wadvalla, Jeffrey Wing, Karen Wolmarans, Cristina Abreu, Pilar Aguilà, Eva Aguilera, Nuria Alonso, Carmen Alvarez, Priscila Cajas, Jose Carlos Castro, Roger Codinachs, Jose Contreras, Maria Jose Coves, Carmen Fajardo, Juan Carlos Ferrer, Neus Font, Mar Garcia, Maria Apolonia Gil, Fernando Gomez, Lluis Alberto Gomez, Jose Gonzalbez, Jose Luis Griera, Luís Masmiquel, Didac Mauricio, Silvia Narejos Perez, Juana Ana Nicolau, Olga Noheda Contreras, Josefina Olivan, Josefina Olivares, Emilio Ortega, Silvia Pellitero, Salvador Pertusa, Ferran Rius, Irene Rodriguez, Carlos Sánchez-Juan, Dolores Santos, Berta Soldevila, David Subias, Manel Terns, Carlos Trescoli, Judith Vilaplana, Alicia Villanueva, Jaan Albo, Kjell Antus, Mattias Axelsson, Lisa Bergström, Emil Binsell-Gerdin, Kurt Boman, Fabian Botond, Annika Dotevall, Anna Graipe, C Jarnet, Jessica Kaminska, Anders Kempe, Michael Korhonen, Carina Linderfalk, Bo Liu, Karl Ljungstroem, Karl Ljungström, Lennart Malmqvist, Linda Mellbin, Thomas Mooe, Peter Nicol, Anders Norrby, Ake Ohlsson, Annika Rosengren, Jan Saaf, Staffan Salmonsson, Olof Strandberg, Karl-Axel Svensson, Bengt-Olov Tengmark, Georgios Tsatsaris, Anders Ulvenstam, Peter Vasko, Chwen-Tzuei Chang, Hsin-Mei Chang, Jung-Fu Chen, To-Pang Chen, Ming-Min Chung, Chia-Po Fu, Te-Lin Hsia, Shih-Che Hua, Ming-Chun Kuo, Chia-ln Lee, I-Te Lee, Kae-Woei Liang, Shih Yi Lin, Chieh-Hsiang Lu, Wen-Ya Ma, Dee Pei, Feng-Chih Shen, Ching-Chieh Su, Shuo-Wei Su, Tsai-Sung Tai, Wan-Ni Tsai, Yi-Ting Tsai, Shih-Chen Tung, Jun-Sing Wang, Hui-I Yu, Ahmed Al-Qaissi, Vijayaraman Arutchelvam, Stephen Atkin, Simon Au, Myint Myint Aye, Stephen Bain, Cristina Bejnariu, Patrick Bell, Deepak Bhatnagar, Rudy Bilous, Neil Black, Ursula Brennan, Barbara Brett, Jana Bujanova, Elaine Chow, Andrew Collier, Amanda Combe, Christopher Courtney, Hamish Courtney, James Crothers, Patrick Eavis, Jackie Elliott, Salvatore Febbraro, Jim Finlayson, Rajiv Gandhi, Sharon Gillings, Jonathan Hamling, Roy Harper, Tim Harris, Kahal Hassan, Simon Heller, Alison Jane, Zeeshan Javed, Tim Johnson, Stephen Jones, Adele Kennedy, David Kerr, Brian Kilgallon, Judith Konya, John Lindsay, Lina Lomova-Williams, Helen Looker, David MacFarlane, Sandra Macrury, Iqbal Malik, Rory McCrimmon, Douglas McKeith, John McKnight, Biswa Mishra, Racha Mukhtar, Ciara Mulligan, Maurice O'Kane, Tolu Olateju, Ian Orpen, Tristan Richardson, Desmond Rooney, Shorsha Bae Ross, Thozhukat Sathyapalan, Naveen Siddaramaiah, Lee Euan Sit, Jeffrey Stephens, Frances Turtle, Ammar Wakil, Emma Walkinshaw, Asem Ali, Robert Anderson, Richard Arakaki, Omar Aref, Mehrdad Kevin Ariani, David Arkin, Salomon Banarer, George Barchini, Arti Bhan, Kelley Branch, Donald Brautigam, Stephen Brietzke, Maridez Brinas, Yudit Brito, Casey Carter, Kimberely Casagni, Sabina Casula, Simon Chakko, Seth Charatz, Dale Childress, Lisa Chow, Malgorzata Chustecka, Subha Clarke, Lisa Cohen, Barry Collins, Gildred Colon Vega, Angel Comulada-Rivera, Gregorio Cortes-Maisonet, Matthew Davis, Jose de Souza, Cyrus Desouza, Mary Dinnan, Bobbi Duffy-Hidalgo, Barbara Dunn, Julia Dunn, Marshall Elman, James Felicetta, Stuart Finkelstein, David Fitz-Patrick, Hermes Florez, Alan Forker, Wayne Fowler, Sonja Fredrickson, Zachary Freedman, Brooke Gainey Narron, Kristin Gainey-Ferree, Michael Gardner, Christian Gastelum, Stephen Giddings, Eve Gillespie, Michael Paul Gimness, Gary Goldstein, Maria Gomes, Nelson Gomez, Timothy Gorman, Ketan Goswami, Arthur Graves, Scott Hacking, Charles Hall, Lenita Hanson, Sherman Harman, David Heber, Robert Henry, Janette Hiner, Irl Hirsch, Priscilla Hollander, Thomas Hooker, Barry Horowitz, Laura Hoste, Loli Huang, Minh Huynh, Dan Hyman, Soha Idriss, Ali Iranmanesh, Dennis Karounos, Moti Kashyap, Lois Katz, William Kaye, Yevgeniy Khaiton, Romesh Khardori, Timothy Kitchen, Andrew Klein, Wendi Knffem, Mikhail Kosiborod, Nicola Kreglinger, Davida Kruger, Anubhav Kumar, Ivan Laboy, Patricia Larrabee, Laura Larrick, Donna Lawson, Mike Ledet, James Lenhard, James Levy, George Li, Zhaoping Li, David Lieb, April Limcolioc, Jane Lions-Patterson, Daniel Lorber, Daniel Lorch, Michael Lorrello, Peter Lu, Kathryn Jean Lucas, Siu-Ling Ma, Michael MacAdams, Michelle Magee, Alexander Magno, Aparna Reddy Mahakala, Jennifer Marks, Anthony McCall, William McClanahan, Carole McClary, Lydia Melendez, John Melish, Deanna Michaud, Christopher Miller, Neil Miller, Pablo Mora, Marriyam Moten, Sunder Mudaliar, Gregory Myrick, Puneet Narayan, Mike Nassif, Karena Neri, Tabitha Newton, Patricia Niblack, Philip Nicol, Ebenezer Nyenwe, A. Ola Odugbesan, Yolanda Okorocha, Ramón Ortiz Carrasquillo, Kwame Osei, Coromoto Palermo, Hiren Patel, Krishna Patel, Cindy Pau, Michael Perley, Sanford Plevin, Elena Plummer, Richard Powell, Mohammed Qintar, Rex Rawls, John Reyes-Castano, Lillian Reynolds, Robert Richards, Julio Rosenstock, Caroline Rowe, Jahandar Saleh, Sony Sam, Alfredo Sanchez, Donald Sander, Bruce Sanderson, Virginia Savin, Elizabeth Seaquist, Jayendra Shah, Serena Shi, Vijay Shivaswamy, Tammi Shlotzhauer, David Shore, Bobbie Skukowski, Kyaw Soe, Vesna Solheim, Joseph Soufer, Helmut Steinberg, Jaime Steinsapir, Phillip Tarkington, Debra Thayer, Stephen Thomson, James Thrasher, Joseph Tibaldi, Jeff Tjaden, Oberto Tores, Dace Trence, Subbulaxmi Trikudanathan, Jagdeesh Ullal, Gabriel Uwaifo, Anthony Vo, Kenny Vu, Damandeep Walia, Karen Weiland, Fred Whitehouse, Thomas Wiegmann, Kathleen Wyne, Alan Wynne, Kevin Yuen, Joel Zaretzky, James Zebrack, Franklin Zieve, William Zigrang, and Everest

Subjects
Male, medicine.medical_specialty, medicine.medical_treatment, Recombinant Fusion Proteins, Placebo-controlled study, Glucagon-Like Peptides, 030204 cardiovascular system & hematology, Placebo, law.invention, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, Double-Blind Method, law, Internal medicine, Medicine, Albuminuria, Humans, Hypoglycemic Agents, Diabetic Nephropathies, 030212 general & internal medicine, Renal replacement therapy, Aged, Intention-to-treat analysis, business.industry, Hazard ratio, General Medicine, Middle Aged, medicine.disease, Immunoglobulin Fc Fragments, Diabetes Mellitus, Type 2, Creatinine, Dulaglutide, Female, business, medicine.drug, Kidney disease, Glomerular Filtration Rate
Abstract

Digital, Background: Two glucagon-like peptide-1 (GLP-1) receptor agonists reduced renal outcomes in people with type 2 diabetes at risk for cardiovascular disease. We assessed the long-term effect of the GLP-1 receptor agonist dulaglutide on renal outcomes in an exploratory analysis of the REWIND trial of the effect of dulaglutide on cardiovascular disease. Methods: REWIND was a multicentre, randomised, double-blind, placebo-controlled trial at 371 sites in 24 countries. Men and women aged at least 50 years with type 2 diabetes who had either a previous cardiovascular event or cardiovascular risk factors were randomly assigned (1:1) to either weekly subcutaneous injection of dulaglutide (1·5 mg) or placebo and followed up at least every 6 months for outcomes. Urinary albumin-to-creatinine ratios (UACRs) and estimated glomerular filtration rates (eGFRs) were estimated from urine and serum values measured in local laboratories every 12 months. The primary outcome (first occurrence of the composite endpoint of non-fatal myocardial infarction, non-fatal stroke, or death from cardiovascular causes), secondary outcomes (including a composite microvascular outcome), and safety outcomes of this trial have been reported elsewhere. In this exploratory analysis, we investigate the renal component of the composite microvascular outcome, defined as the first occurrence of new macroalbuminuria (UACR >33·9 mg/mmol), a sustained decline in eGFR of 30% or more from baseline, or chronic renal replacement therapy. Analyses were by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT01394952. Findings: Between Aug 18, 2011, and Aug 14, 2013, 9901 participants were enrolled and randomly assigned to receive dulaglutide (n=4949) or placebo (n=4952). At baseline, 791 (7·9%) had macroalbuminuria and mean eGFR was 76·9 mL/min per 1·73 m2 (SD 22·7). During a median follow-up of 5·4 years (IQR 5·1-5·9) comprising 51 820 person-years, the renal outcome developed in 848 (17·1%) participants at an incidence rate of 3·5 per 100 person-years in the dulaglutide group and in 970 (19·6%) participants at an incidence rate of 4·1 per 100 person-years in the placebo group (hazard ratio [HR] 0·85, 95% CI 0·77-0·93; p=0·0004). The clearest effect was for new macroalbuminuria (HR 0·77, 95% CI 0·68-0·87; p, Ciencias Médicas y de la Salud

Published
2019

50. Dulaglutide and cardiovascular outcomes in type 2 diabetes (REWIND): a double-blind, randomised placebo-controlled trial

Author

Hertzel C Gerstein, Helen M Colhoun, Gilles R Dagenais, Rafael Diaz, Mark Lakshmanan, Prem Pais, Jeffrey Probstfield, Jeffrey S Riesmeyer, Matthew C Riddle, Lars Rydén, Denis Xavier, Charles Messan Atisso, Leanne Dyal, Stephanie Hall, Purnima Rao-Melacini, Gloria Wong, Alvaro Avezum, Jan Basile, Namsik Chung, Ignacio Conget, William C Cushman, Edward Franek, Nicolae Hancu, Markolf Hanefeld, Shaun Holt, Petr Jansky, Matyas Keltai, Fernando Lanas, Lawrence A Leiter, Patricio Lopez-Jaramillo, Ernesto German Cardona Munoz, Valdis Pirags, Nana Pogosova, Peter J Raubenheimer, Jonathan E Shaw, Wayne H-H Sheu, Theodora Temelkova-Kurktschiev, Mercedes Abella, Andrea Alebuena, Sandra Almagro, Eduardo Amoroso, Paula Anadon, Elizabeth Andreu, Guillermo Aristimuño, Maria Arzadun, Maria Barbieri, Raul Barcudi, Ines Bartolacci, Gabriel Bolobanich, Anselmo Bordonava, Miguel Bustamante Labarta, Betina Bustos, Alberto Caccavo, Alejandra Camino, Maria Cantero, Maria Carignano, Luis Cartasegna, Marcela Cipullo, Víctor Commendatore, Victoria Conosciuto, Osvaldo Costamagna, Claudia Crespo, Jose Cuello, Carlos Cuneo, Sandra Cusimano, Sofia Dean, Claudio Dituro, Andrea Dominguez, Miguel Farah, Alberto Fernandez, Florencia Fernandez, Adriana Ferrari, Patricia Flammia, Jose Fuentealba, Karina Beatriz Gallardo, Celso Garcia, Ruben Garcia Duran, Marcelo Garrido, Rodolfo Gavicola, Claudio Gerbaudo, Graciela Gilli, Ana Paula Giotto, Pedro Godoy Bolzán, Oscar Gomez Vilamajo, Fernando Guerlloy, Cristian Guridi, Narcisa Gutierrez Garrido, Eduardo Hasbani, Sonia Hermida, Miguel Hominal, Adrian Hrabar, Adrián Ingaramo, Alejandra Izzicupo, Mario Krynski, Mariana Lagrutta, Paulina Lanchiotti, Maria Langhe, Veronica Leonard, Javier Llanos, Ricardo Lopez Santi, Jorge Lowenstein, Cecilia Luquez, Ignacio Mackinnon, Melina Mana, Sara Manzur, Javier Marino, Carolina Martella, Roger Martinez, Re Matias, Javier Matkovich, Monica Meritano, Oscar Montaña, María Mulazzi, Juan Ochoa, Gustavo Paterlini, María 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Godoy, Elio Grumberg, Rodolfo Lahsen, Gladys Larenas, Eugenia Ortiz, Javier Paredes, Sergio Potthoff, Eva Retamal, Luis Rojas, Manuel Salgado, Claudio Santibanez, Carmen Solis, Benjamin Stokins, Jose Accini, Javier Acebedo, Lina Maria Agudelo Baena, Soraya Alarcon, Juliana Angel, Edgar Arcos, M Aroca Martinez, Leonor Atuesta, Jose Balaguera, Doris Ballestas, Sandra Isabel Barrera, Rosmy Barrios Reyes, Adolfo Bayona, Andres Bermudez, Diego Zarate Bernal, Marco Blanquicett, Victor Bravo, Wendy Bueno, Alvaro Burbano Delgado, Alberto Cadena, Andres Cadena, Sandra Caicedo, Carlos Celemin, Ricardo Consuegra, Cristhian Contreras Pimienta, Kelly Johenis Corredor, Carlos Cure, Lizeth Dayana De La Hoz Rueda, Erika Delgado, Sarahy Diaz, Marta Diego, Anabell Donado, William Encinales Sanabria, Juliana Escobar, Gillian Escorcia, Leonardo Forero, Laura Fuentes, Maria Garcia, Henry Garcia Lozada, Luis Garcia Ortiz, Angela Giraldo, Laura Gomez Gonzalez, Javier Granada, Corina Gutierrez, Natalia Henao, Edwin Hernandez, Olga Maria Herrera Uejbe, Juan Diego Higuera Cobos, Jaime Ibarra Gómez, Edwin Hernandez Jaimes, Monica Jaramillo, Nicolas Jaramillo, Carlos Jaramillo Gomez, Monica Jaramillo Sanchez, Ivonne Jarava Durán, Catalina Lopez Ceballos, Claudia Madrid, Elias María Amastha, Jennifer Mercado, Dora Ines Molina, Jessica Molina Soto, Carlos Montoya, Alexander Morales, Carolina Muñoz, Luis Alejandro Orozco, Oscar Osorio, Jorge Mario Palmera Sanchez, Adwar Peña, Jose Perez, Juan Perez Agudelo, Germán Pérez Amador, Carlos Pertuz, Irina Posada, Carlos Puerta, Adalberto Quintero, Diana Quiroz, Carmen Rendon, Alberto Reyes, Alvaro Reyes, Diana Ripoll, Carlos Rivera, Maria Rocha, Jose F Rodriguez, Kervis Asid Rodriguez Villanueva, Javier Emilio Rodriguez Zabala, Sindy Rojas, Maria Romero, Ricardo Rosero, Angelica Rocio Rosillo Cardenas, Lina Rueda, Gregorio Sanchez, Tatiana Sanchez, Arístides Sotomayor Herazo, Monica Suarez, Mariana Torres, Freddy Trujillo, Miguel Urina, Lazaro Van 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Markauskiene, Salomeja Meiluniene, Almantas Norkus, Rita Norviliene, Vladimiras Petrenko, Ruta Radzeviciene, Gintare Sakalyte, Gediminas Urbonas, Skaiste Urbutiene, Donatas Vasiliauskas, Dzilda Velickiene, Carlos Aguilar, Marco Alcocer, Juan Antonio Avalos-Ramirez, Ramiro Banda-Elizondo, Rubria Bricio-Ramirez, Karla Cardenas Mejia, Francisco Cavazos, Jesus Chapa, Erika Cienfuegos, Astrid De la Peña, Gilberto de la Peña Topete, Manuel Odin De los Rios Ibarra, Daniel Elias, Claudia Flores-Moreno, Pedro Garcia Hernandez, Luis Gerardo Gonzalez, Rosa Linda Guerra Moya, Arturo Guerra-Lopez, Raymundo Hernandez Baylon, Carolina Herrera Colorado, Marisol Herrera-Marmolejo, Neri Islas-Palacios, Esteban Lopez, Fernando Lopez, Agustin Lopez Alvarado, Rosa Isela Luna Ceballos, Enrique Morales Villegas, Gualberto Moreno-Virgen, Rosa Linda Parra Perez, Sara Pascoe Gonzalez, Irving Peralta-Cantu, Roopa Previn, Rosa Ramirez, Rubria Ramirez, Maria Guadalupe Ramos Zavala, Monica Rodriguez, Rocio 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Jun-Sing Wang, Hui-I Yu, Ahmed Al-Qaissi, Vijayaraman Arutchelvam, Stephen Atkin, Simon Au, Myint Myint Aye, Stephen Bain, Cristina Bejnariu, Patrick Bell, Deepak Bhatnagar, Rudy Bilous, Neil Black, Ursula Brennan, Barbara Brett, Jana Bujanova, Elaine Chow, Andrew Collier, Amanda Combe, Christopher Courtney, Hamish Courtney, James Crothers, Patrick Eavis, Jackie Elliott, Salvatore Febbraro, Jim Finlayson, Rajiv Gandhi, Sharon Gillings, Jonathan Hamling, Roy Harper, Tim Harris, Kahal Hassan, Simon Heller, Alison Jane, Zeeshan Javed, Tim Johnson, Stephen Jones, Adele Kennedy, David Kerr, Brian Kilgallon, Judith Konya, John Lindsay, Lina Lomova-Williams, Helen Looker, David MacFarlane, Sandra Macrury, Iqbal Malik, Rory McCrimmon, Douglas McKeith, John McKnight, Biswa Mishra, Racha Mukhtar, Ciara Mulligan, Maurice O'Kane, Tolu Olateju, Ian Orpen, Tristan Richardson, Desmond Rooney, Shorsha Bae Ross, Thozhukat Sathyapalan, Naveen Siddaramaiah, Lee Euan Sit, Jeffrey Stephens, Frances Turtle, Ammar Wakil, Emma Walkinshaw, Asem Ali, Robert Anderson, Richard Arakaki, Omar Aref, Mehrdad Kevin Ariani, David Arkin, Salomon Banarer, George Barchini, Arti Bhan, Kelley Branch, Donald Brautigam, Stephen Brietzke, Maridez Brinas, Yudit Brito, Casey Carter, Kimberely Casagni, Sabina Casula, Simon Chakko, Seth Charatz, Dale Childress, Lisa Chow, Malgorzata Chustecka, Subha Clarke, Lisa Cohen, Barry Collins, Gildred Colon Vega, Angel Comulada-Rivera, Gregorio Cortes-Maisonet, Matthew Davis, Jose de Souza, Cyrus Desouza, Mary Dinnan, Bobbi Duffy-Hidalgo, Barbara Dunn, Julia Dunn, Marshall Elman, James Felicetta, Stuart Finkelstein, David Fitz-Patrick, Hermes Florez, Alan Forker, Wayne Fowler, Sonja Fredrickson, Zachary Freedman, Brooke Gainey Narron, Kristin Gainey-Ferree, Michael Gardner, Christian Gastelum, Stephen Giddings, Eve Gillespie, Michael Paul Gimness, Gary Goldstein, Maria Gomes, Nelson Gomez, Timothy Gorman, Ketan Goswami, Arthur Graves, Scott Hacking, Charles Hall, Lenita Hanson, Sherman Harman, David Heber, Robert Henry, Janette Hiner, Irl Hirsch, Priscilla Hollander, Thomas Hooker, Barry Horowitz, Laura Hoste, Loli Huang, Minh Huynh, Dan Hyman, Soha Idriss, Ali Iranmanesh, Dennis Karounos, Moti Kashyap, Lois Katz, William Kaye, Yevgeniy Khaiton, Romesh Khardori, Timothy Kitchen, Andrew Klein, Wendi Knffem, Mikhail Kosiborod, Nicola Kreglinger, Davida Kruger, Anubhav Kumar, Ivan Laboy, Patricia Larrabee, Laura Larrick, Donna Lawson, Mike Ledet, James Lenhard, James Levy, George Li, Zhaoping Li, David Lieb, April Limcolioc, Jane Lions-Patterson, Daniel Lorber, Daniel Lorch, Michael Lorrello, Peter Lu, Kathryn Jean Lucas, Siu-Ling Ma, Michael MacAdams, Michelle Magee, Alexander Magno, Aparna Reddy Mahakala, Jennifer Marks, Anthony McCall, William McClanahan, Carole McClary, Lydia Melendez, John Melish, Deanna Michaud, Christopher Miller, Neil Miller, Pablo Mora, Marriyam Moten, Sunder Mudaliar, Gregory Myrick, Puneet Narayan, Mike Nassif, Karena Neri, Tabitha Newton, Patricia Niblack, Philip Nicol, Ebenezer Nyenwe, A. Ola Odugbesan, Yolanda Okorocha, Ramón Ortiz Carrasquillo, Kwame Osei, Coromoto Palermo, Hiren Patel, Krishna Patel, Cindy Pau, Michael Perley, Sanford Plevin, Elena Plummer, Richard Powell, Mohammed Qintar, Rex Rawls, John Reyes-Castano, Lillian Reynolds, Robert Richards, Julio Rosenstock, Caroline Rowe, Jahandar Saleh, Sony Sam, Alfredo Sanchez, Donald Sander, Bruce Sanderson, Virginia Savin, Elizabeth Seaquist, Jayendra Shah, Serena Shi, Vijay Shivaswamy, Tammi Shlotzhauer, David Shore, Bobbie Skukowski, Kyaw Soe, Vesna Solheim, Joseph Soufer, Helmut Steinberg, Jaime Steinsapir, Phillip Tarkington, Debra Thayer, Stephen Thomson, James Thrasher, Joseph Tibaldi, Jeff Tjaden, Oberto Tores, Dace Trence, Subbulaxmi Trikudanathan, Jagdeesh Ullal, Gabriel Uwaifo, Anthony Vo, Kenny Vu, Damandeep Walia, Karen Weiland, Fred Whitehouse, Thomas Wiegmann, Kathleen Wyne, Alan Wynne, Kevin Yuen, Joel Zaretzky, James Zebrack, Franklin Zieve, William Zigrang, and Everest

Subjects
Male, medicine.medical_specialty, Recombinant Fusion Proteins, Population, Placebo-controlled study, Glucagon-Like Peptides, Myocardial Infarction, Type 2 diabetes, 030204 cardiovascular system & hematology, Placebo, law.invention, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, Double-Blind Method, law, Internal medicine, medicine, Humans, Hypoglycemic Agents, 030212 general & internal medicine, education, Aged, education.field_of_study, business.industry, Semaglutide, Hazard ratio, General Medicine, Middle Aged, medicine.disease, Immunoglobulin Fc Fragments, Stroke, Diabetes Mellitus, Type 2, Cardiovascular Diseases, Dulaglutide, Female, business, medicine.drug
Abstract

Digital, Background Three different glucagon-like peptide-1 (GLP-1) receptor agonists reduce cardiovascular outcomes in people with type 2 diabetes at high cardiovascular risk with high glycated haemoglobin A1c (HbA1c) concentrations. We assessed the effect of the GLP-1 receptor agonist dulaglutide on major adverse cardiovascular events when added to the existing antihyperglycaemic regimens of individuals with type 2 diabetes with and without previous cardiovascular disease and a wide range of glycaemic control. Methods This multicentre, randomised, double-blind, placebo-controlled trial was done at 371 sites in 24 countries. Men and women aged at least 50 years with type 2 diabetes who had either a previous cardiovascular event or cardiovascular risk factors were randomly assigned (1:1) to either weekly subcutaneous injection of dulaglutide (1·5 mg) or placebo. Randomisation was done by a computer-generated random code with stratification by site. All investigators and participants were masked to treatment assignment. Participants were followed up at least every 6 months for incident cardiovascular and other serious clinical outcomes. The primary outcome was the first occurrence of the composite endpoint of non-fatal myocardial infarction, non-fatal stroke, or death from cardiovascular causes (including unknown causes), which was assessed in the intention-to-treat population. This study is registered with ClinicalTrials.gov, number NCT01394952. Findings Between Aug 18, 2011, and Aug 14, 2013, 9901 participants (mean age 66·2 years [SD 6·5], median HbA1c 7·2% [IQR 6·6–8·1], 4589 [46·3%] women) were enrolled and randomly assigned to receive dulaglutide (n=4949) or placebo (n=4952). During a median follow-up of 5·4 years (IQR 5·1–5·9), the primary composite outcome occurred in 594 (12·0%) participants at an incidence rate of 2·4 per 100 person-years in the dulaglutide group and in 663 (13·4%) participants at an incidence rate of 2·7 per 100 person-years in the placebo group (hazard ratio [HR] 0·88, 95% CI 0·79–0·99; p=0·026). All-cause mortality did not differ between groups (536 [10·8%] in the dulaglutide group vs 592 [12·0%] in the placebo group; HR 0·90, 95% CI 0·80–1·01; p=0·067). 2347 (47·4%) participants assigned to dulaglutide reported a gastrointestinal adverse event during follow-up compared with 1687 (34·1%) participants assigned to placebo (p, Ciencias Médicas y de la Salud

Published
2019

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