18 results on '"Tsioulos G"'
Search Results
2. Pan-Echinocandin Resistant C. parapsilosis Harboring an F652S Fks1 Alteration in a Patient with Prolonged Echinocandin Therapy
- Author
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Siopi, M. Papadopoulos, A. Spiliopoulou, A. Paliogianni, F. Abou-Chakra, N. Arendrup, M.C. Damoulari, C. Tsioulos, G. Giannitsioti, E. Frantzeskaki, F. Tsangaris, I. Pournaras, S. Meletiadis, J. and Siopi, M. Papadopoulos, A. Spiliopoulou, A. Paliogianni, F. Abou-Chakra, N. Arendrup, M.C. Damoulari, C. Tsioulos, G. Giannitsioti, E. Frantzeskaki, F. Tsangaris, I. Pournaras, S. Meletiadis, J.
- Abstract
The isolation of a pan-echinocandin-resistant Candida parapsilosis strain (anidulafungin, caspofungin, micafungin and rezafungin EUCAST MICs > 8 mg/L) from urine of a patient following prolonged exposure to echinocandins (38 days of micafungin followed by 16 days of anidulafungin) is described. The isolate harbored the novel alteration F652S in the hotspot 1 region of fks1. Isogenic C. parapsilosis bloodstream isolates collected up to 1.5 months earlier from the same patient were susceptible to echinocandins (anidulafungin, caspofungin and micafungin EUCAST MICs 1–2, 1 and 1 mg/L, respectively) and contained wild-type FKS1 sequences. This is the first report of pan-echinocandin resistance in C. parapsilosis associated with an aminoacid change in hotspot 1 region of fks1. © 2022 by the authors.
- Published
- 2022
3. Insights into CD24 and Exosome Physiology and Potential Role in View of Recent Advances in COVID-19 Therapeutics: A Narrative Review
- Author
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Tsioulos, G. Grigoropoulos, I. Moschopoulos, C.D. Shapira, S. Poulakou, G. Antoniadou, A. Boumpas, D. Arber, N. Tsiodras, S. and Tsioulos, G. Grigoropoulos, I. Moschopoulos, C.D. Shapira, S. Poulakou, G. Antoniadou, A. Boumpas, D. Arber, N. Tsiodras, S.
- Abstract
Cluster of differentiation (CD) 24, a long-known protein with multifaceted functions, has gained attention as a possible treatment for Coronavirus Disease 19 (COVID-19) due to its known anti-inflammatory action. Extracellular vesicles (EVs), such as exosomes and microvesicles, may serve as candidate drug delivery platforms for novel therapeutic approaches in COVID-19 and various other diseases due to their unique characteristics. In the current review, we describe the physiology of CD24 and EVs and try to elucidate their role, both independently and as a combination, in COVID-19 therapeutics. CD24 may act as an important immune regulator in diseases with complex physiologies characterized by excessive inflammation. Very recent data outline a possible therapeutic role not only in COVID-19 but also in other similar disease states, e.g., acute respiratory distress syndrome (ARDS) and sepsis where immune dysregulation plays a key pathophysiologic role. On the other hand, CD24, as well as other therapeutic molecules, can be administered with the use of exosomes, exploiting their unique characteristics to create a novel drug delivery platform as outlined in recent clinical efforts. The implications for human therapeutics in general are huge with regard to pharmacodynamics, pharmacokinetics, safety, and efficacy that will be further elucidated in future randomized controlled trials (RCTs). © 2022 by the authors.
- Published
- 2022
4. Saturation effects in a continuous-wave HF chemical laser
- Author
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Sentman, L. H., primary, Nayfeh, M. H., additional, Renzoni, P., additional, King, K., additional, Townsend, S., additional, and Tsioulos, G., additional
- Published
- 1985
- Full Text
- View/download PDF
5. Saturation effects in a CW HF chemical laser
- Author
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SENTMAN, L., primary, NAYFEH, M., additional, RENZONI, P., additional, KING, K., additional, TOWNSEND, S., additional, and TSIOULOS, G., additional
- Published
- 1984
- Full Text
- View/download PDF
6. Beneath the Surface: The Emerging Role of Ultra-Processed Foods in Obesity-Related Cancer.
- Author
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Anastasiou IA, Kounatidis D, Vallianou NG, Skourtis A, Dimitriou K, Tzivaki I, Tsioulos G, Rigatou A, Karampela I, and Dalamaga M
- Abstract
Purposeof Review: Ultra-processed foods (UPFs) are becoming more and more important in daily diets around the world; in some cases, they can account for as much as 60% of daily energy intake. Epidemiological evidence suggests that this shift toward high levels of food processing may be partially responsible for the global obesity epidemic and the rise in the prevalence of chronic diseases., Recent Findings: Few prospective studies have examined the relationship between UPF consumption and cancer outcomes. According to currently available information, UPFs may increase the risk of cancer due to their obesogenic properties and exposure to substances that can cause cancer, such as certain food additives and pollution from product processing. The complex relationship between obesity and cancer involves factors such as immune dysregulation, altered adipokine and sex hormone levels, abnormal fatty acid metabolism, extracellular matrix remodeling, and chronic inflammation. Addressing cancer risk associated with UPF consumption could involve a multifaceted approach, including consumer behavior modification programs and robust public health regulations aimed at enhancing food environments. Improved knowledge of the potential dual negative impacts of UPFs on the environment and cancer risk is one of the priority areas we identify for future research and policy implications. Various approaches could be used to prevent cancers associated with UPF consumption, such as consumer behavior change programs and stricter public health regulations needed to improve the food environment. This review examines for the first time the potential role of UPFs in cancer risk associated with obesity, exploring underlying biological mechanisms and identifying key areas for future research and policy action, including the dual environmental and health impact of UPFs., Competing Interests: Declarations. Conflict of Interest: The authors declare no competing interests. Animal and Human Rights and Informed Consent: This article does not contain any studies with human or animal subjects performed by any of the authors., (© 2025. The Author(s).)
- Published
- 2025
- Full Text
- View/download PDF
7. Unraveling the Anti-Cancer Mechanisms of Antibiotics: Current Insights, Controversies, and Future Perspectives.
- Author
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Karamanolis NN, Kounatidis D, Vallianou NG, Dimitriou K, Tsaroucha E, Tsioulos G, Anastasiou IA, Mavrothalassitis E, Karampela I, and Dalamaga M
- Abstract
Cancer persists as a significant global health challenge, claiming millions of lives annually despite remarkable strides in therapeutic innovation. Challenges such as drug resistance, toxicity, and suboptimal efficacy underscore the need for novel treatment paradigms. In this context, the repurposing of antibiotics as anti-cancer agents has emerged as an attractive prospect for investigation. Diverse classes of antibiotics have exhibited promising anti-cancer properties in both in vitro and in vivo studies. These mechanisms include the induction of apoptosis and cell cycle arrest, generation of reactive oxygen species, and inhibition of key regulators of cell proliferation and migration. Additional effects involve the disruption of angiogenesis and modulation of pivotal processes such as inflammation, immune response, mitochondrial dynamics, ferroptosis, and autophagy. Furthermore, antibiotics have demonstrated the potential to enhance the efficacy of conventional modalities like chemotherapy and radiotherapy, while alleviating treatment-induced toxicities. Nevertheless, the integration of antibiotics into oncological applications remains contentious, with concerns centered on their disruption of gut microbiota, interference with immunotherapeutic strategies, contribution to microbial resistance, and potential association with tumorigenesis. This narrative review explores the mechanisms of antibiotics' anti-cancer activity, addresses controversies about their dual role in cancer biology, and envisions future perspectives that include the development of novel derivatives and innovative frameworks for their incorporation into cancer treatment paradigms.
- Published
- 2024
- Full Text
- View/download PDF
8. Vaccination as a Promising Approach in Cardiovascular Risk Mitigation: Are We Ready to Embrace a Vaccine Strategy?
- Author
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Tsioulos G, Vallianou NG, Skourtis A, Dalamaga M, Kotsi E, Kargioti S, Adamidis N, Karampela I, Mourouzis I, and Kounatidis D
- Subjects
- Humans, Animals, Atherosclerosis prevention & control, Atherosclerosis immunology, Heart Disease Risk Factors, Vaccination, Cardiovascular Diseases prevention & control, Cardiovascular Diseases immunology, Vaccines immunology, Vaccines therapeutic use
- Abstract
Cardiovascular disease (CVD) remains a leading global health concern, with atherosclerosis being its principal cause. Standard CVD treatments primarily focus on mitigating cardiovascular (CV) risk factors through lifestyle changes and cholesterol-lowering therapies. As atherosclerosis is marked by chronic arterial inflammation, the innate and adaptive immune systems play vital roles in its progression, either exacerbating or alleviating disease development. This intricate interplay positions the immune system as a compelling therapeutic target. Consequently, immunomodulatory strategies have gained increasing attention, though none have yet reached widespread clinical adoption. Safety concerns, particularly the suppression of host immune defenses, remain a significant barrier to the clinical application of anti-inflammatory therapies. Recent decades have revealed the significant role of adaptive immune responses to plaque-associated autoantigens in atherogenesis, opening new perspectives for targeted immunological interventions. Preclinical models indicate that vaccines targeting specific atherosclerosis-related autoantigens can slow disease progression while preserving systemic immune function. In this context, numerous experimental studies have advanced the understanding of vaccine development by exploring diverse targeting pathways. Key strategies include passive immunization using naturally occurring immunoglobulin G (IgG) antibodies and active immunization targeting low-density lipoprotein cholesterol (LDL-C) and apolipoproteins, such as apolipoprotein B100 (ApoB100) and apolipoprotein CIII (ApoCIII). Other approaches involve vaccine formulations aimed at proteins that regulate lipoprotein metabolism, including proprotein convertase subtilisin/kexin type 9 (PCSK9), cholesteryl ester transfer protein (CETP), and angiopoietin-like protein 3 (ANGPTL3). Furthermore, the literature highlights the potential for developing non-lipid-related vaccines, with key targets including heat shock proteins (HSPs), interleukins (ILs), angiotensin III (Ang III), and a disintegrin and metalloproteinase with thrombospondin motifs 7 (ADAMTS-7). However, translating these promising findings into safe and effective clinical therapies presents substantial challenges. This review provides a critical evaluation of current anti-atherosclerotic vaccination strategies, examines their proposed mechanisms of action, and discusses key challenges that need to be overcome to enable clinical translation.
- Published
- 2024
- Full Text
- View/download PDF
9. Current and experimental pharmacotherapy for the management of non-alcoholic fatty liver disease.
- Author
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Katsarou A, Tsioulos G, Kassi E, and Chatzigeorgiou A
- Subjects
- Humans, Sodium-Glucose Transporter 2 Inhibitors therapeutic use, Hypoglycemic Agents therapeutic use, Hypoglycemic Agents pharmacology, Diabetes Mellitus, Type 2 drug therapy, Non-alcoholic Fatty Liver Disease drug therapy
- Abstract
Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease, with its incidence increasing in parallel with the global prevalence of obesity and type 2 diabetes mellitus. Despite our steadily increasing knowledge of its pathogenesis, there is as yet no available pharmacotherapy specifically tailored for NAFLD. To define the appropriate management, it is important to clarify the context in which the disease appears. In the case of concurrent metabolic comorbidities, NAFLD patients are treated by targeting these comorbidities, such as diabetes and obesity. Thus, GLP-1 analogs, PPAR, and SGLT2 inhibitors have recently become central to the treatment of NAFLD. In parallel, randomized trials are being conducted to explore new agents targeting known pathways involved in NAFLD progression. However, there is an imperative need to intensify the effort to design new, safe drugs with biopsy-proven efficacy. Of note, the main target of the pharmacotherapy should be directed to the regression of fibrotic NASH, as this histologic stage has been correlated with increased overall as well as liver-related morbidity and mortality. Herein we discuss the drugs currently at the forefront of NAFLD treatment., (© 2024. The Author(s), under exclusive licence to Hellenic Endocrine Society.)
- Published
- 2024
- Full Text
- View/download PDF
10. The safety and potential efficacy of exosomes overexpressing CD24 (EXO-CD24) in mild-moderate COVID-19 related ARDS.
- Author
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Grigoropoulos I, Tsioulos G, Kastrissianakis A, Shapira S, Green O, Rapti V, Tsakona M, Konstantinos T, Savva A, Kavatha D, Boumpas D, Syrigos K, Xynogalas I, Leontis K, Ntousopoulos V, Sakka V, Sardelis Z, Fotiadis A, Vlassi L, Kontogianni C, Levounets A, Poulakou G, Gaga M, MacLoughlin R, Stebbing J, Arber N, Antoniadou A, and Tsiodras S
- Subjects
- Humans, Male, Middle Aged, Female, SARS-CoV-2, Single-Blind Method, Immunologic Factors, Drug Carriers, Treatment Outcome, CD24 Antigen, COVID-19, Exosomes, Respiratory Distress Syndrome diagnosis, Respiratory Distress Syndrome drug therapy, Respiratory Distress Syndrome genetics
- Abstract
Introduction: EXO-CD24 are exosomes genetically manipulated to over-express Cluster of Differentiation (CD) 24. It consists of two breakthrough technologies: CD24, the drug, as a novel immunomodulator that is smarter than steroids without any side effects, and exosomes as the ideal natural drug carrier., Methods: A randomized, single blind, dose-finding phase IIb trial in hospitalized patients with mild to moderate Coronavirus disease 2019 (COVID-19) related Acute Respiratory Distress Syndrome (ARDS) was carried out in two medical centers in Athens. Patients received either 10
9 or 1010 exosome particles of EXO-CD24, daily, for five consecutive days and monitored for 28 days. Efficacy was assessed at day 7 among 91 patients who underwent randomization. The outcome was also compared in a post-hoc analysis with an income control group (n = 202) that fit the inclusion and exclusion criteria., Results: The mean age was 49.4 (± 13.2) years and 74.4% were male. By day 7, 83.7% showed improved respiratory signs and 64% had better oxygen saturation (SpO2 ) (p < 0.05). There were significant reductions in all inflammatory markers, most notably in C-reactive protein (CRP), lactate dehydrogenase (LDH), ferritin, fibrinogen and an array of cytokines. Conversely, levels of the anti-inflammatory cytokine Interleukin-10 (IL-10) were increased (p < 0.05). Of all the documented adverse events, none were considered treatment related. No drug-drug interactions were noted. Two patients succumbed to COVID-19. Post-hoc analysis revealed that EXO-CD24 patients exhibited greater improvements in clinical and laboratory outcomes compared to an observational income control group., Conclusions: EXO-CD24 presents a promising therapeutic approach for hyper-inflammatory state and in particular ARDS. Its unique combination of exosomes, as a drug carrier, and CD24, as an immunomodulator, coupled with inhalation administration, warrants further investigation in a larger, international, randomized, quadri-blind trial against a placebo., (© 2024. The Author(s).)- Published
- 2024
- Full Text
- View/download PDF
11. Lipoprotein(a) and Atherosclerotic Cardiovascular Disease: Where Do We Stand?
- Author
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Tsioulos G, Kounatidis D, Vallianou NG, Poulaki A, Kotsi E, Christodoulatos GS, Tsilingiris D, Karampela I, Skourtis A, and Dalamaga M
- Subjects
- Humans, Lipoprotein(a) genetics, Risk Factors, Apoprotein(a), Apolipoproteins A, Cardiovascular Diseases, Atherosclerosis drug therapy
- Abstract
Lipoprotein(a) [Lp(a)] consists of a low-density lipoprotein-like molecule and an apolipoprotein(a) [apo(a)] particle. Lp(a) has been suggested to be an independent risk factor of atherosclerotic cardiovascular disease (ASCVD). Lp(a) plasma levels are considered to be 70-90% genetically determined through the codominant expression of the LPA gene. Therefore, Lp(a) levels are almost stable during an individual's lifetime. This lifelong stability, together with the difficulties in measuring Lp(a) levels in a standardized manner, may account for the scarcity of available drugs targeting Lp(a). In this review, we synopsize the latest data regarding the structure, metabolism, and factors affecting circulating levels of Lp(a), as well as the laboratory determination measurement of Lp(a), its role in the pathogenesis of ASCVD and thrombosis, and the potential use of various therapeutic agents targeting Lp(a). In particular, we discuss novel agents, such as antisense oligonucleotides (ASOs) and small interfering RNAs (siRNAs) that are currently being developed and target Lp(a). The promising role of muvalaplin, an oral inhibitor of Lp(a) formation, is then further analyzed.
- Published
- 2024
- Full Text
- View/download PDF
12. Duration of Dual Antiplatelet Treatment After Percutaneous Coronary Intervention in Patients With Diabetes: A Systematic Review and Meta-analysis.
- Author
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Apostolos A, Travlos C, Tsioulos G, Chlorogiannis DD, Karanasos A, Papafaklis M, Alexopoulos D, Toutouzas K, Davlouros P, and Tsigkas G
- Subjects
- Humans, Drug Therapy, Combination, Platelet Aggregation Inhibitors, Ticagrelor therapeutic use, Treatment Outcome, Diabetes Mellitus diagnosis, Diabetes Mellitus drug therapy, Myocardial Infarction drug therapy, Percutaneous Coronary Intervention
- Abstract
Abstract: Aim of our systematic review and meta-analysis is to compare shortened (≤3 months) dual antiplatelet therapy (DAPT) with longer DAPT in diabetic patients undergoing percutaneous coronary interventions.We systematically screened 3 major databases (MEDLINE, Cochrane Central Register of Controlled Trials, and Scopus) searching for randomized-controlled trials or subanalyses of them, which compared shortened DAPT (S-DAPT) with longer DAPT regimens of DAPT. Primary end point of systematic review and meta-analysis is the net adverse clinical events (NACE), and secondary are major adverse cardiac events (MACE), mortality, bleedings, myocardial infarction, and stent thrombosis. Subgroup analyses included studies using only ticagrelor-based regimens and 3-month duration of DAPT.A total of 8 studies and 12,665 patients were included in our analysis. Our meta-analysis met its primary end point because S-DAPT was associated significantly with a reduced risk ratio (RR) by 17% [RR: 0.83, 95% confidence intervals (CI), 0.72-0.96]. Nonsignificant difference among the rest end points was detected between the 2 groups. Subgroup analyses showed that ticagrelor-based regimens were associated with a significant reduction of mortality (RR: 0.67, 95% CI, 0.48-0.93) and 3-month DAPT reduced furtherly NACE by 27% (RR: 0.73, 95% CI, 0.60-0.89).In conclusion, our systematic review and meta-analysis showed that (i) S-DAPT was significantly associated with a lower incidence of NACE, (ii) ticagrelor-based S-DAPT was associated with decreased mortality rates, and (iii) the benefit of 3-month duration of DAPT achieved an even greater NACE reduction. Thus, S-DAPT could be considered as a safe and feasible option in diabetic patients., Competing Interests: The authors report no conflicts of interest., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
13. NF-kappa-B essential modulator (NEMO) gene polymorphism in an adult woman with systemic lupus erythematosus and recurrent non-tuberculous mycobacterial disseminated infections.
- Author
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Thomas K, Tsioulos G, Kotsogianni C, Banos A, Niemela JE, Cheng A, DiMaggio T, Holland S, Rosenzweig SD, Tziolos N, Papadopoulos A, Lionakis MS, and Boumpas DT
- Subjects
- Adult, Female, Humans, Autoantibodies, Immunosuppression Therapy, Polymorphism, Genetic, Lupus Erythematosus, Systemic complications, Lupus Erythematosus, Systemic diagnosis, Lupus Erythematosus, Systemic drug therapy, Nontuberculous Mycobacteria
- Abstract
Infections are among the most serious complications in patients with systemic lupus erythematosus (SLE), with bacterial and viral infections being the most common. Non-tuberculous mycobacterial (NTM) infections are quite rare and are typically seen in older patients with SLE with longstanding disease duration treated with corticosteroids. Here, we describe a 39-year-old woman with SLE and an unusual pattern of recurrent NTM disseminated infections. After excluding the presence of autoantibodies against interferon-γ, whole exome sequencing revealed a homozygous polymorphism in the NF-kappa-B essential modulator (NEMO) gene. Primary immunodeficiencies should be included in the differential diagnosis of patients with recurrent opportunistic infections, even in those with iatrogenic immunosuppression., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2023
- Full Text
- View/download PDF
14. Zuska's disease in a male patient. The critical role of ultrasound imaging in diagnosis and management of this rare entity.
- Author
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Gkionis IG, Giakoumakis MI, Liva D, Tsioulos G, Matalliotakis M, Vrontaki M, Giakoumakis KI, Cavallo G, and Laliotis A
- Abstract
Zuska's disease is a pathologic entity characterized by the formation of subareolar breast abscess caused by the obstruction of lactiferous ducts. Although Zuska's disease is found relatively often in female patients, only 19 male cases have been reported. That makes Zuska's diagnosis challenging in males, leading to significant morbidity and high recurrence rates. Clinical evaluation and imaging techniques, especially ultrasound and mammography, are considered the cornerstones for the diagnosis of Zuska's disease, whereas fine-needle aspiration cytology is necessary in order to exclude malignancy. Multiple treatment approaches have been used including conservative antibiotic therapy, drainage of the abscess and surgical excision of the lactiferous ducts. We present the case of a 57 year old male who was diagnosed with Zuska's disease and treated via ultrasound-guided drainage of the abscess. Having a high level of suspicion, performing appropriate imaging tests and offering definite treatment, is the only way to decrease morbidity and recurrence., (© 2023 The Authors. Published by Elsevier Inc.)
- Published
- 2023
- Full Text
- View/download PDF
15. Severe eosinophilic granulomatosis with polyangiitis responding to a combination of rituximab and mepolizumab.
- Author
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Tsioulos G, Kounatidis D, Vallianou NG, Koufopoulos N, Katsimbri P, and Antoniadou A
- Subjects
- Male, Humans, Adolescent, Rituximab therapeutic use, Glucocorticoids, Cyclophosphamide therapeutic use, Antibodies, Antineutrophil Cytoplasmic, Churg-Strauss Syndrome complications, Churg-Strauss Syndrome drug therapy, Granulomatosis with Polyangiitis complications, Granulomatosis with Polyangiitis drug therapy
- Abstract
Eosinophilic granulomatosis with polyangiitis (EGPA), formerly known as Churg-Strauss Syndrome, is a multisystem antineutrophil cytoplasmic antibody (ANCA) positive vasculitis, characterized by the presence of chronic rhinosinusitis, asthma and prominent peripheral blood eosinophilia. Although the most commonly involved organ is the lung, followed by the skin, EGPA can affect any organ system. Herein, we present the complicated case of an 18-year-old male patient with severe life-threatening EGPA, with central nervous system, cardiac and gasterointestinal involvement, which was resistant to initial treatment with glucocorticoids and cyclophosphamide. The patient responded well, achieving complete remission after the addition of rituximab and mepolizumab to glucocorticoids and cyclophosphamide., Competing Interests: Declaration of Competing Interest There are no conflict sof interest regarding this manuscript., (Copyright © 2022 Southern Society for Clinical Investigation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
16. Insights into CD24 and Exosome Physiology and Potential Role in View of Recent Advances in COVID-19 Therapeutics: A Narrative Review.
- Author
-
Tsioulos G, Grigoropoulos I, Moschopoulos CD, Shapira S, Poulakou G, Antoniadou A, Boumpas D, Arber N, and Tsiodras S
- Abstract
Cluster of differentiation (CD) 24, a long-known protein with multifaceted functions, has gained attention as a possible treatment for Coronavirus Disease 19 (COVID-19) due to its known anti-inflammatory action. Extracellular vesicles (EVs), such as exosomes and microvesicles, may serve as candidate drug delivery platforms for novel therapeutic approaches in COVID-19 and various other diseases due to their unique characteristics. In the current review, we describe the physiology of CD24 and EVs and try to elucidate their role, both independently and as a combination, in COVID-19 therapeutics. CD24 may act as an important immune regulator in diseases with complex physiologies characterized by excessive inflammation. Very recent data outline a possible therapeutic role not only in COVID-19 but also in other similar disease states, e.g., acute respiratory distress syndrome (ARDS) and sepsis where immune dysregulation plays a key pathophysiologic role. On the other hand, CD24, as well as other therapeutic molecules, can be administered with the use of exosomes, exploiting their unique characteristics to create a novel drug delivery platform as outlined in recent clinical efforts. The implications for human therapeutics in general are huge with regard to pharmacodynamics, pharmacokinetics, safety, and efficacy that will be further elucidated in future randomized controlled trials (RCTs).
- Published
- 2022
- Full Text
- View/download PDF
17. Pan-Echinocandin Resistant C. parapsilosis Harboring an F652S Fks1 Alteration in a Patient with Prolonged Echinocandin Therapy.
- Author
-
Siopi M, Papadopoulos A, Spiliopoulou A, Paliogianni F, Abou-Chakra N, Arendrup MC, Damoulari C, Tsioulos G, Giannitsioti E, Frantzeskaki F, Tsangaris I, Pournaras S, and Meletiadis J
- Abstract
The isolation of a pan-echinocandin-resistant Candida parapsilosis strain (anidulafungin, caspofungin, micafungin and rezafungin EUCAST MICs > 8 mg/L) from urine of a patient following prolonged exposure to echinocandins (38 days of micafungin followed by 16 days of anidulafungin) is described. The isolate harbored the novel alteration F652S in the hotspot 1 region of fks1. Isogenic C. parapsilosis bloodstream isolates collected up to 1.5 months earlier from the same patient were susceptible to echinocandins (anidulafungin, caspofungin and micafungin EUCAST MICs 1−2, 1 and 1 mg/L, respectively) and contained wild-type FKS1 sequences. This is the first report of pan-echinocandin resistance in C. parapsilosis associated with an aminoacid change in hotspot 1 region of fks1.
- Published
- 2022
- Full Text
- View/download PDF
18. Time-dependent oscillations in a cw chemical laser unstable resonator.
- Author
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Sentman LH, Nayfeh MH, Townsend SW, King K, Tsioulos G, and Bichanich J
- Published
- 1985
- Full Text
- View/download PDF
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