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Abstract Background Parasites of the Leishmania genus alternate between the flagellated extracellular promastigote stage and intracellular amastigotes. Here we report the characterization of a Leishmania isolate, obtained from a cutaneous leishmaniasis patient, which presents peculiar morphological features. Methods The parasite was cultured in vitro and characterized morphologically using optical and electron microscopy. Identification was performed based on monoclonal antibodies and internal ribosomal spacer typing. In vitro macrophage cultures, murine experimental models and sand fly infections were used to evaluate infectivity in vitro and in vivo. Results The isolate was identified as Leishmania (Viannia) braziliensis. In the atypical promastigotes grown in culture, a short flagellum surrounded or interrupted by a protuberance of disorganized material was observed. A normal axoneme was present close to the basal body but without elongation much further outside the flagellar pocket. A disorganized swelling at the precocious end of the axoneme coincided with the lack of a paraflagellar rod structure. The isolate was able to infect macrophages in vitro, induce lesions in BALB/c mice and infect Lutzomyia longipalpis. Conclusions Notwithstanding the lack of an extracellular flagellum, this isolate infects macrophages in vitro and produces lesions when inoculated into mice. Moreover, it is able to colonize phlebotomine sand flies. Considering the importance attributed to the flagellum in the successful infection and survival of Leishmania in the insect midgut and in the invasion of macrophages, these findings may bring new light into the infectious mechanisms of L. (V.) braziliensis.

Eukaryotic initiation factor 2B (eIF2B) controls translation initiation by recycling inactive eIF2-GDP to active eIF2-GTP. Under cellular stress, the integrated stress response (ISR) is activated inhibiting eIF2B activity resulting in the translation attenuation and reprogramming of gene expression to overcome the stress. The ISR can dictate cell fate wherein chronic activation has pathological outcomes. Vanishing white matter disease (VWMD) is a chronic ISR-related disorder with mutations in eIF2B targeting astrocyte and oligodendrocyte cells. Regulation of eIF2B localization (eIF2B bodies) has been implicated in the ISR. We present evidence that neuronal and glial cell types possess distinct patterns of eIF2B bodies which change in a manner correlating to acute and chronic ISR activation. We also demonstrate that while neural and glial cell types respond similarly to the acute induction of the ISR a chronic ISR exerts cell-type specific differences. These findings provide key insights into neural cell responses and adaptation to cellular stress., Competing Interests: For the purpose of open access, the author has applied a Creative Commons Attribution (CC BY) license to any Author Accepted article version of this article arising from this submission. The authors have no relevant financial or non-financial interests to disclose. The author Dr Filipe Hanson completed this work as part of his PhD studies at Sheffield Hallam University. He now works as a Research Scientist for UCB Pharma, Slough, UK. The author Dr Madalena deOliveira contributed to this work as part of her PhD studies at Sheffield Hallam University. She now works as a Postdoctoral Fellow for MSD, UK., (© 2024 The Author(s).)

Background: An assessment of the factors that interfere with serum levels and the persistence of anti-SARs-CoV-2 IgG antibodies is essential in order to estimate the risk of reinfection and to plan vaccination. We analyzed the impact of the severity of coronavirus disease 2019 (COVID-19) and the clinical and biological factors regarding the persistence of SARs-CoV-2 anti-spike protein (IgG-S) antibodies at 12 months., Methods: This was an observational, longitudinal study with individuals who had recovered from COVID-19 between August 2020 and June 2021. Peripheral blood samples were collected from volunteers who were hospitalized (SERIOUS COVID-19) and those who required no hospitalization (COVID-19 LIGHT). Samples were grouped according to days after symptom onset: up to 90, between 91 and 180, ≥ 180 days after symptom onset. A semiquantitative test for IgG anti-spike protein S1(IgG-S1) was used., Results: We analyzed 238 individuals who had recovered from COVID-19, of whom 87 had been hospitalized and 151 had not. They provided 148 and 220 samples, respectively. Among those hospitalized, males (65.5%), volunteers aged over 60 years (41.1%), comorbidities such as arterial hypertension (67.8%) and diabetes mellitus (37.9%) were most frequent. We observed higher median serum IgG-S1 titers among those who had recovered from COVID-19 and had been hospitalized, at all collection time intervals (p < 0.001). We observed a weak correlation of increasing age with humoral IgG-S1 response (Spearman correlation = 0.298). There was a greater probability of IgG-S1 antibody persistence over time among samples from hospitalized individuals compared to samples from non-hospitalized participants (p = 0.001)., Conclusion: This study has revealed higher titers and a higher probability of the persistence of IgG-S1 in severe cases after SARs-CoV-2 primary infection in unvaccinated recovered patients. Thus, in this study, the severe clinical presentation of COVID-19 was the main factor influencing serum levels and the persistence of IgG-S1 antibodies in COVID-19., (© 2023. The Author(s).)

The present study aimed to inspect the serum levels of the soluble receptors, sTNFR1 and sTNFR2, in patients with COVID-19. The large production of inflammatory cytokines is an essential process in the pathogenesis of COVID-19. TNF is a multifaceted proinflammatory cytokine which has soluble and membrane receptors. Thus, knowing the role of these receptors will help better understand this disease's immunopathogenesis. We included 131 patients confirmed for SARS-CoV-2, separated into three groups: ward patients without O2 support, group A (n = 14); ward patients with O2 support, group B (n = 85), and patients in an intensive care unit (ICU), group C (n = 32), making up the receptors dosed by flow cytometry. The results showed that sTNFR1 and sTNFR2 are associated with disease severity, being higher in group C when compared to group A. As for the levels of receptors and their relationship with the degree of lung involvement, we found higher values of sTNFR1 in patients in group 1 (pulmonary involvement < 25%), suggesting that inflammatory processes related to TNF are not necessarily associated with the primary site of infection. When we analysed the patients who passed away compared to those who recovered, both receptors significantly increased the mortality numbers. These findings suggest a relevant influence of soluble receptors in the inflammatory processes involved in the pathogenesis of COVID-19. Wherefore, we suggest using these receptors as biomarkers of severity and mortality of the disease., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023. Published by Elsevier GmbH.)

Grazing patterns, intake structure, and diet selection are dynamic responses to animals' feeding environment. This study uses video sequences from animal-borne cameras to capture time- and scale-dependent grazing behaviour variables related to sward explanatory conditions. We observed grazing 'through' the sheep's eyes using point-of-view (POV) cameras coupled with event logging software. Time-specific sward features were measured by sampling 'really' grazed patches identified by applying a global navigation satellite system (GNSS) precision-grazing approach. Sward variables on a Mediterranean native sward were measured for two years during the active spring plant-growth cycle. Overall, the results demonstrate that POV cameras were able to capture grazing behaviour fine-tuning to changes in sward characteristics. Sheep compensate for the decrease in sward quantity and nutritive value by increasing the size and duration at each behavioural scale (i.e., meal, bout, and station) while increasing the bout rate and decreasing the station rate. Diet composition also changed as sward matured. The proportion of forbs in the diet remained high in early and late spring, and forbs and legumes were preferred to grasses in early spring. Grazing selectivity was more pronounced in late spring, with sheep favouring the middle stratum of the sward's vertical structure, preferring green vegetative material, while enlarging the feeding niches' span and spending more time at each niche, consequently reducing the station rate. Although data collected by individual animal-borne POV cameras were representative of the flock behaviour, they may underestimate the total grazing time outside major meals. The results indicate that the use of animal-borne video cameras is suitable for assessing variations in sheep grazing behaviour patterns in complex swards., Competing Interests: The authors have declared that no competing interests exist.

Background: Many biological, social and cultural barriers for suboptimal breastfeeding practices have been identified in literature. Among these, excessive pre-pregnancy weight has been identified as a risk factor for not initiating breastfeeding early. Social support, coming from social networks (e.g. a partner, family or friends) or health care providers, has been positively associated with breastfeeding. This study aimed to examine the association between pre-pregnancy excessive weight and breastfeeding within the first hour after birth and if social support modifies this association., Design: National population-based study conducted with 21,086 postpartum women from February 1, 2011 to October 31, 2012 in 266 hospitals from all five regions of Brazil. Social support was defined as having a companion at the hospital. Main effects and interactions were tested with multivariable regression analyses., Results: Multivariate regression analyses indicated that class I and class II obese women had lower odds of breastfeeding within the first hour when a companion was not present (AOR = 0.59, 95% CI 0.42-0.82 and AOR = 0.59, 95% CI 0.36-0.97, respectively), but there was no association when the companion was present. Among overweight and obese women, the predicted probability of breastfeeding within the first hour was lower for those without a companion. This association was not found among those with normal pre-pregnancy BMI., Conclusions: Social support modifies the relationship between pre-gestational BMI and breastfeeding initiation among women who are overweight or obese, specifically it reduces the risk of delayed breastfeeding initiation., Competing Interests: The authors have declared that no competing interests exist.

Objective: To identify the impact of training in breastfeeding on knowledge, skills, and professional and hospital practices., Data Source: The systematic review search was carried out through the MEDLINE, Scopus, and LILACS databases. Reviews, studies with qualitative methodology, those without control group, those conducted in primary care, with specific populations, studies that had a belief and/or professional attitude as outcome, or those with focus on the post-discharge period were excluded. There was no limitation of period or language. The quality of the studies was assessed by the adapted criteria of Downs and Black., Summary of Data: The literature search identified 276 articles, of which 37 were selected for reading, 26 were excluded, and six were included through reference search. In total, 17 intervention articles were included, three of them with good internal validity. The studies were performed between 1992 and 2010 in countries from five continents; four of them were conducted in Brazil. The training target populations were nursing practitioners, doctors, midwives, and home visitors. Many kinds of training courses were applied. Five interventions employed the theoretical and practical training of the Baby-Friendly Hospital Initiative. All kinds of training courses showed at least one positive result on knowledge, skills, and/or professional/hospital practices, most of them with statistical significance., Conclusions: Training of hospital health professionals has been effective in improving knowledge, skills, and practices., (Copyright © 2016 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.)

Objective: to evaluate the conditions of functional health literacy of an elderly diabetics group., Method: cross-sectional and descriptive study, with diabetic's elderly assisted in the SUS (N = 114). The social and health conditions were evaluated as well as functional health literacy by S-TOFHLA test (short version); the simple proportions, average, standard deviation and Pearson's Chi-square were described by SPSS software (20.0) with α = 5% value., Results: the mean age was 67.4 years, 74.0% of the elderly were women, had up to four years of schooling; 29.8% had a long-standing illness, 64.0% reported having high blood pressure, 47.4% smoke or were smokers, 73.7% had low functional health literacy, which was associated with schooling p = 0.001., Conclusions: the low functional health literacy could be a self-care conditioning and can be influenced by low schooling because it implies to have skills to understand and make decisions aimed at self-management of health.

This study presents a new recombinant protein that acts as a powerful antiviral (rAVLO-recombinant Antiviral protein of Lonomia obliqua). It was able to reduce the replication by 10(6) fold for herpes virus and by 10(4) fold for rubella virus. RT-PCR of viral RNA rAVLO treated infected cells also showed similar rate of inhibition in replication. The analysis of this protein by bioinformatics suggests that this protein is globular, secreted with a signal peptide and has the ability to bind to MHC class I. It was found that there are several protein binding sites with various HLA and a prevalence of α-helices in the N-terminal region (overall classified as a α/β protein type). BLAST similarity sequence search for corresponding cDNA did not reveal a similar sequence in Genbank, suggesting that it is from a novel protein family. In this study we have observed that this recombinant protein and hemolymph has a potent antiviral action. This protein was produced in a baculovirus/Sf-9 system. Therefore, these analyses suggest that this novel polypeptide is a candidate as a broad spectrum antiviral.

The studies on chemical composition and biological activity of propolis had focused mainly on species Apis mellifera L. (Hymenoptera: Apidae). There are few studies about the uncommon propolis collected by stingless bees of the Meliponini tribe known as geopropolis. The geopropolis from Scaptotrigona postica was collected in the region of Barra do Corda, Maranhão state, Brazil. The chemical analysis of hydromethanolic extract of this geopropolis (HMG) was carried out through HPLC-DAD-ESI-MS/MS and the main constituents found were pyrrolizidine alkaloids and C-glycosyl flavones. The presence of alkaloids in extracts of propolis is detected for the first time in this sample. The antiviral activity of HMG was evaluated through viral DNA quantification experiments and electron microscopy experiments. Quantification of viral DNA from herpes virus showed reduction of about 98% in all conditions and concentration tested of the HMG extract. The results obtained were corroborated by transmission electron microscopy, in which the images did not show particle or viral replication complex. The antiviral activity of C-glycosyl flavones was reported for a variety of viruses, being observed at different points in the viral replication. This work is the first report about the antiviral activity of geopropolis from Scaptotrigona postica, in vitro, against antiherpes simplex virus (HSV).

Objective: To investigate how the 4thStep of the Baby-Friendly Hospital Initiative was applied, assess the prevalence of breastfeeding (BF) within the first hour after birth and analyze factors associated with non-BF in this period of life., Methods: Cross-sectional study conducted in a high-risk maternity-hospital in Rio de Janeiro City, Brazil, with interview to a sample of 403 rooming-in mothers. The prevalence ratio with its respective 95% confidence interval was estimated by the use of SPSS 15® from a model with complementary log log link function., Results: The prevalence of BF in the first hour of life was 43.9%. Multivariate analysis showed that were protected against non-BF in the first hour after birth non-black women (PR = 0.62, 95% CI: 0.42-0.90), multiparous women (PR = 0.66, 95% CI: 0.47-0.93), prenatal care (PR = 0.23, 95% CI: 0.08-0.67), vaginal delivery (PR =0 .41, 95% CI: 0.28-0.60), newborn with birthweight ≥ 2,500g (PR = 0.31, 95% CI: 0.11-0.86) and women who received help from the health team to BF in the delivery room (PR = 0.51, 95% CI: 0.36-0.72)., Conclusion: Help provided by the health team to breastfeeding at birth, Step 4 of the Baby-Friendly Hospital Initiative, as well as non black women, multiparous women, receiving pre-natal care, vaginal delivery and appropriate birthweight contributed to breastfeeding in the first hour of life.

Introduction: The pre and post-HIV test counseling is recommended by the Ministry of Health, and is a tool for reflection and joint decision-making., Objectives: To determine the proportion of women receiving counseling for submission to the HIV rapid test and to assess factors associated to not receiving counseling for this test., Method: A cross-sectional study was conducted in five "Baby-Friendly Hospitals" from the High Risk Pregnancy System in Rio de Janeiro City, Southeast Brazil. The study population were 955 rooming-in parturients, undergoing the HIV rapid test, between September 11thand December 11th, 2006. Semi-standardized questionnaires were applied to the mothers, and data were also obtained from laboratory and health archives. Binomial regression was performed in order to analyze the variables associated with non-counseling., Results: Were submitted to the HIV rapid test 28.5% of the parturients, and only 26.9% of them were counseled. Factors associated with non-counseling were: maternal education below 8 years of school (PR = 1.36; 95% CI: 1.15-1.62), 0 to 3 prenatal visits (RP = 0.73; IC 95%: 0.59-0.90) and hospitals with less than 50% of the parturients submitted to the HIV rapid test (PR = 1.65; 95% CI: 1.40-1.96)., Conclusion: Socially underprivileged women were not a target of counseling, and only the low number of prenatal visits proved to be a protective factor against non-counseling. Counseling was seldom practiced for HIV rapid testing, indicating that this test has been performed without the consent of women, in an imperative way.

Objective: To identify the maternal characteristics and welcoming actions towards mothers of infants aged less than six months associated with early liquid offer., Methods: Cross-sectional study performed in 2007, with a representative sample of mothers of infants aged less than six months (n=1,057), users of Primary Health Care (PHC) Units, in the city of Rio de Janeiro, Southeastern Brazil. A multivariate logistic regression model was used to estimate the association between explanatory variables and liquid offer, with weighing and design effect and controlled for infant age., Results: Of all mothers, 32% did not receive the welcoming card in the maternity hospital, 47% did not receive guidance on breastfeeding at their first visit to the PHC unit after childbirth and 55% reported they had offered liquids to their infants. Women without at least six months of previous breastfeeding experience were more likely to offer liquids than those with such experience (OR=1.57; 95% CI: 1.16;2.13). Mothers who had not received guidance on breastfeeding at their first visit to the UBS after childbirth were 58% more likely to offer liquids than those who had received it. Liquid offer was positively associated with adolescence among women with a partner (OR=2.17; 95% CI: 1.10;4.30) and negatively associated with adolescence among those without a partner (OR=0.31; 95% CI: 0.11;0.85). Among women with less than eight years of education, those who had not received guidance on breastfeeding after childbirth were 1.8 times more likely to offer liquids than others who had received it., Conclusions: Age, marital status and previous breastfeeding experience are maternal characteristics associated with liquid offer to infants aged less than six months. Receiving early guidance on breastfeeding could reduce liquid offer to infants.

Objective: To evaluate patient profiles and factors associated with successful treatment., Methods: A retrospective study of patients enrolled in the smoking cessation program at the Hospital de Messejana, located in the state of Ceará, Brazil, from October of 2002 to April of 2005. The treatment was evaluated based on patient profile, type of medication prescribed and time on that medication., Results: Of the 320 patients enrolled, 65.5% were women. The mean age at the outset of treatment was 48 years, and the mean duration of the smoking habit was 33 years. More than 90% of the patients had started smoking before the age of 20. Of the 258 individuals who had enrolled in the program at least one year prior, 50.8% had achieved treatment success; 17.8% had relapsed, and 31.4% had not quit smoking. On average, partial success was achieved in the fifth week of the treatment, and relapse occurred predominantly in the fourth month. Approximately 60% of the patients were treated with medication., Conclusion: Quitting smoking was significantly associated with the use of medication, regardless of the profile of the smoker evaluated. In the second year of the program, quitting smoking was more strongly associated with the use of bupropion and nicotine replacement, resulting in a higher success rate and a trend toward a reduction in the relapse rate.

This article evaluates a policy for breastfeeding promotion, protection, and support in primary health care units in Rio de Janeiro State, Brazil, analyzing the assumptions, interventions, and results based on a log-frame model. A systematic review sought to identify effective procedures and strategies for extending breastfeeding duration, constituting the basis for creating "Ten Steps" in the "Breastfeeding-Friendly Primary Care Initiative" launched in Rio de Janeiro State in 1999. A corresponding evaluation method was developed and applied to verify the performance of 24 primary health care units from different parts of the State. A direct association was found between the practical implementation of these steps and prevalence of exclusive breastfeeding, as well as with mothers' satisfaction. An analysis of meanings ascribed by pregnant women and mothers to the support provided for breastfeeding identified five categories: "no support", "doubtful support", "encouragement", "guidance", and "partnership". The evaluation model allowed staff at the health care units to recognize opportunities for improving the program, in order to reverse the current low prevalence of exclusive breastfeeding.

The Brazilian Association of Nursing (ABEn) was founded in 1926. The association has been the source for the creation of new professional organizations and the motivator of the development of the nursing profession in the country. The creation, implantation and development of the nursing boards are important achievements of ABEn. Twenty-eight years of struggle to approve the law number 5.905 of 12 July 1973, which created the nursing boards. Implantation of the Federal Board of Nursing (COFEn) and CORENS done under the leadership of ABEn. ABEn's participation in the development of the federal and regional boards of nursing. Current situation of the relationship between ABEn, syndicates, and nursing boards.