Neem Essential Oil as an Antifungal Agent against Phyllosticta citricarpa.

The fungus Phyllosticta citricarpa is a quarantine phytopathogen responsible for causing citrus black spot (CBS) disease. To export fruits to CBS-free countries, they must undergo a sanitation process to ensure disease control. In this study, neem essential oil (NEO) was tested against P. citricarpa for the first time as an alternative sanitizer. In vitro experiments were conducted to determine the inhibition concentration of NEO for P. citricarpa, and the mode of action of the essential oil was evaluated. In vivo assays were performed to simulate the sanitization process used in packinghouses. NEO was characterized by GC-MS/MS. The results revealed that NEO at 100 µL·mL-1 exhibited a similar inhibitory effect as copper oxychloride, suppressing 89.68 ± 1.14% of fungal mycelium growth. Fluorescence microscopy experiments demonstrated that NEO functions by disrupting the cytoplasmic membrane of fungal hyphae, leading to their death within 30 minutes of contact with NEO. GC-MS/MS characterization revealed a high presence of phenolic compounds, which serve as the primary antifungal agents responsible for the action against fungal hyphae. In vivo assays showed that NEO at 100 µL·mL-1 also reduced microorganisms (CFU mL-1) by 93.00 ± 3.88% compared to the negative control. Overall, the results demonstrate that NEO can effectively serve as an alternative sanitizer against P. citricarpa in citrus packinghouses. Our findings allow future studies to explore the use of NEO for sanitizing other fruits and combating different phytopathogens to broaden its potential application in fruit sanitation for export.

Long-term recruitment of peripheral immune cells to brain scars after a neonatal insult.

Although brain scars in adults have been extensively studied, there is less data available regarding scar formation during the neonatal period, and the involvement of peripheral immune cells in this process remains unexplored in neonates. Using a murine model of neonatal hypoxic-ischemic encephalopathy (HIE) and confocal microscopy, we characterized the scarring process and examined the recruitment of peripheral immune cells to cortical and hippocampal scars for up to 1 year post-insult. Regional differences in scar formation were observed, including the presence of reticular fibrotic networks in the cortex and perivascular fibrosis in the hippocampus. We identified chemokines with chronically elevated levels in both regions and demonstrated, through a parabiosis-based strategy, the recruitment of lymphocytes, neutrophils, and monocyte-derived macrophages to the scars several weeks after the neonatal insult. After 1 year, however, neutrophils and lymphocytes were absent from the scars. Our data indicate that peripheral immune cells are transient components of HIE-induced brain scars, opening up new possibilities for late therapeutic interventions.

Genetic Structure and Biodiversity in Wild Centropomus parallelus and in Wild and Recently Domesticated Centropomus undecimallis Populations.

Centropomus undecimalis (common snook) and Centropomus parallelus (fat snook) have a wide distribution from southern Florida to southern Brazil. Due to their value as a food source, these species have been heavily exploited through predatory fishing, posing a conservation challenge. To assess their genetic diversity and population structure, we used microsatellite markers. Our findings revealed genetic differences among populations of the same species, highlighting the need for targeted conservation efforts. The microsatellite markers proved effective in assessing genetic variability, providing valuable insights for management and conservation. The parameters Ho (observed heterozygosity) and He (expected heterozygosity) were reliable indicators of genetic diversity, and specific loci showed varying allele numbers across populations. Our study contributes to understanding population genetics in these snook species and supports their conservation. Despite not being classified as endangered, genetic differences among populations emphasize the importance of considering population-level characteristics in conservation strategies. This research lays the foundation for future studies and actions aimed at preserving these valuable fish species. In summary, our study demonstrates the significance of microsatellite markers in assessing genetic variability and population structure in common snook and fat snook, informing conservation efforts for these species.

Reduction of seizures and inflammatory markers by betamethasone in a kindling seizure model.

Epilepsy is a chronic disease characterized by an ongoing predisposition to seizures. Although inflammation has emerged as a crucial factor in the etiology of epilepsy, no approaches to anti-inflammatory treatment have been clinically proven to date. Betamethasone (a corticosteroid drug used in the clinic for its anti-inflammatory and immunosuppressive effects) has never been evaluated in attenuating the intensity of seizures in a kindling animal model of seizures. Using a kindling model in male wistar rats, this study evaluated the effect of betamethasone on the severity of seizures and levels of pro-inflammatory interleukins. Seizures were induced by pentylenetetrazole (30 mg/kg) on alternate days for 15 days. The animals were divided into four groups: a control group treated with saline, another control group treated with diazepam (2 mg/kg), and two groups treated with betamethasone (0.125 and 0.250 mg/kg, respectively). Open field test was conducted. Betamethasone treatments were effective in reducing the intensity of epileptic seizures. There were lower levels of Tumor Necrosis Factor-α and interleukin-1ß in the cortex, compared to the saline group, on the other hand, levels in the hippocampus remained similar to the control groups. There was no change in the levels of interleukin-6 in the evaluated structures. Serum inflammatory mediators remained similar. Lower quantities of inflammatory mediators in the central nervous system may have been the key to the reduced severity of seizures on the Racine scale.

Reproductive outcomes of neonatal exposure to betamethasone in male and female rats.

Betamethasone (BM) is the drug of choice for antenatal corticosteroid therapy for women at risk of preterm delivery because it induces fetal lung maturation and enhances survival after birth. However, our group reported evidence of fetal programming and impaired reproductive development and function in rats exposed during the critical window of genital system development. Therefore, we aimed to investigate the effects of BM on the sexual development of rats in the period that corresponds to antenatal corticosteroid therapy in humans. Male and female rats were exposed subcutaneously to BM at 0.1 µg/g of pups' body weight or to a NaCl 0.9% solution (control) on postnatal days 1-3. It was observed that neonatal exposure to BM decreased body weight and weight gain in male and female rats during treatment. The estrous cycle was deregulated and LH level was decreased in female rats. In male rats, the sperm concentration in the caput-corpus of the epididymis was decreased, whereas the sperm transit time and sperm concentration in the cauda of the epididymis were increased. Our results demonstrated that neonatal exposure to BM impaired body growth of male and female rats, deregulated the estrous cycle of female rats, and altered sperm quality of male rats. Therefore, BM exposure from postnatal days 1 to 3 corroborated results previously observed after prenatal exposure to this drug. Despite the recognized importance of human antenatal corticosteroid therapy, the findings of this study should encourage further studies in order to minimize possible adverse postnatal effects.

Transtorno depressivo em mulheres no período pós-parto: análise segundo a raça/cor autorreferida / Trastorno depresivo en mujeres en el período posparto: análisis según raza/color autodeclarado / Depressive disorder among postpartum women: an analysis according to self-reported race/color

Resumo Objetivo Identificar a raça/cor autorreferida por mulheres com 60 dias de pós-parto; identificar a prevalência do indicativo de transtorno depressivo nessas mulheres e verificar a associação entre o indicativo de transtorno depressivo e o quesito raça/cor autorreferida. Métodos Estudo transversal desenvolvido em um município do interior paulista. Foram utilizados, para a coleta de dados, um instrumento com dados sociodemográficos e a Escala de Depressão Pós-Natal de Edimburgo. Os dados foram analisados utilizando-se o Statistical Package for Social Sciences, SPSS, versão 17.0. Resultados Participaram deste estudo 186 mulheres, 60,8% referiram ser da cor parda, 24,2% apresentaram indicativo de transtorno depressivo e, entre estas, 81,7% eram da raça negra. O indicativo de transtorno depressivo associou-se às variáveis: número de filhos (p=0,006), gestação planejada (p=0,04) e tipo de parto (p< 0,001). Conclusão Os resultados deste estudo contribuem para maior visibilidade da temática da saúde mental das mulheres, especificamente das mulheres negras, pois, mesmo que não tenha sido identificada associação significativa dentre aquelas que apresentaram indicativo de transtorno depressivo, a maioria era da raça negra.

Resumen Objetivo Identificar la raza/color autodeclarado por mujeres con 60 días de posparto, identificar la prevalencia de indicios de trastorno depresivo en esas mujeres y verificar la relación entre los indicios de trastorno depresivo y el ítem raza/color autodeclarado. Métodos Estudio transversal realizado en un municipio del interior paulista. Para la recopilación de datos, se utilizó un instrumento con datos sociodemográficos y la Escala de Depresión Posnatal de Edimburgo. Para analizar los datos se utilizó el Statistical Package for Social Sciences, SPSS, versión 17.0. Resultados Participaron en el estudio 186 mujeres, el 60,8 % declararon ser de color pardo, el 24,2 % presentó indicios de trastorno depresivo y, entre ellas, el 81,7 % era de raza negra. Los indicios de trastorno depresivo se relacionaron a las variables: número de hijos (p=0,006), embarazo planeado (p=0,04) y tipo de parto (p< 0,001). Conclusión Los resultados de este estudio contribuyen para una mayor visibilidad del tema de salud mental de las mujeres, específicamente de mujeres negras, ya que, aunque no se haya identificado una relación significativa entre las que presentaron indicios de trastorno depresivo, la mayoría era de raza negra.

Abstract Objective To identify the race/color self-reported by women 60 days postpartum; to identify the prevalence of signs of depressive disorder among these women and to verify the association between signs of depressive disorder and the self-reported race/color. Methods Cross-sectional study carried out in a noncapital city in the state of São Paulo. An instrument with sociodemographic data and the Edinburgh Postnatal Depression Scale were used for data collection. Data was analyzed using the Statistical Package for Social Sciences, SPSS, version 17.0. Results A total of 186 women participated in this study, 60.8% reported being brown, 24.2% had signs of depressive disorder and, among these, 81.7% were black. Signs of depressive disorder were associated with the variables: number of children (p=0.006), planned pregnancy (p=0.04) and type of delivery (p< 0.001). Conclusion The results of this study contribute to greater visibility of the issue of women's mental health, specifically of black women, because even though no significant association was identified among those who showed signs of depressive disorder, most were black.

Aerobic exercise, alone or combined with an anti-inflammatory drug, reduces the severity of epileptic seizures and levels of central pro-inflammatory cytokines in an animal model of epileptic seizures.

Epilepsy is a chronic neurological disorder and there is increasing evidence about the role of inflammation in epileptogenesis. These findings have spurred the search for new immunomodulatory approaches that can improve prognosis. Using an animal model of chemically-induced epileptic seizures, we tested exercise alone as non-pharmacological therapy, and exercise combined with an anti-inflammatory drug. Five groups were used: sedentary, diazepam, aerobic exercise alone, aerobic exercise combined with an anti-inflammatory drug, and naive control. Our goal was to compare the severity of the epileptic seizures between groups as well as seizure latency in a pentylenetetrazole-induced paradigm. Cytokine levels (IL-1ß, TNF-α, and IL-10) were measured. Both exercise groups showed a reduction in seizure severity and lower levels of pro-inflammatory cytokines in the cortex, while the levels of cytokines in the hippocampus remained unaffected.

Peripheral artery disease: a comparison of urgent open and endovascular revascularizations on the public health system in Brazil, from 2010 to 2020.

Background: Peripheral artery disease (PAD) has high prevalence and is associated with high risk of cardiovascular events. Surgical or endovascular intervention is necessary in chronic limb-threatening ischemia. Objectives: To evaluate the distribution of open and endovascular revascularizations in different regions of Brazil, analyzing the health system costs and mortality related to these procedures. Methods: A descriptive, cross-sectional, observational, epidemiological study was carried out to evaluate open and endovascular surgeries performed on the SUS public healthcare system in Brazil, from 2010 to 2020. Data were collected from the SUS Department of Informatics (Datasus). Results: Over the period analyzed, 83,218 admissions for open and endovascular surgeries were registered, with a total cost of R$ 333,989,523.17. There were more hospital admissions for percutaneous procedures (56,132) than for conventional surgery (27,086). Most of the procedures (83%) were performed in the country's Southeast and South regions, while the North region had the lowest number of procedures. Over the period evaluated, there was a decreasing trend for open procedures and an increasing trend for endovascular procedures. The average hospital stay was shorter for endovascular procedures (5.3 days) than for open surgery (10.2 days). The analysis of mortality related to these procedures revealed a higher rate of in-hospital mortality associated with open revascularization than with endovascular (5.24% vs. 1.56%). Conclusions: Endovascular techniques constituted the primary approach for revascularization treatment in critical limb-threatening ischemia, with a lower in-hospital mortality rate and shorter hospital stay when compared to open surgeries.

Cyclohexanone-Based Chalcones as Alternatives for Fuel Additives.

The use of small molecules, such as chalcones and their derivatives, for more efficient fuels is in increasing demand due to environmental factors. Here, three crystal structures (BH I, II, and III) of cyclohexanone-based chalcones were synthesized and described by single-crystal X-ray diffraction and Hirshfeld surface analysis. The supramolecular modeling analysis on the hyperconjugative interaction energies and QTAIM analysis at the ωB97XD/6-311++G(d,p) level of theory were carried out to analyze the intermolecular interactions in the solid-state. The structure-property relationship, frontier molecular orbital, molecular electrostatic potential, and the experimental calorific value analysis show that the three compounds are a good alternative to be used as an additive for some fuels. Our findings represent a further step forward in the development of cheaper and more efficient fuel additives and pose an opportunity for further investigation on similar analogues.

Gut microbiota modulation by prednisolone in a rat kindling model of pentylenetetrazol (PTZ)-induced seizure.

The gut microbiota is a complex community composed by several microorganisms that interact in the maintenance of homeostasis and contribute to physiological processes, including brain function. The relationship of the taxonomic composition of the gut microbiota with neurological diseases such as autism, Parkinson's, Alzheimer's, anxiety, and depression is widely recognized. The immune system is an important intermediary between the gut microbiota and the central nervous system, being one of the communication routes of the gut-brain axis. Although the complexity of the relationship between inflammation and epilepsy has not yet been elucidated, inflammatory processes are similar in many ways to the consequences of dysbiosis and contribute to disease progression. This study aimed to analyze the taxonomic composition of the gut microbiota of rats treated with prednisolone in a kindling model of epilepsy. Male Wistar rats (90 days, n = 24) divided into four experimental groups: sodium chloride solution 0.9 g%, diazepam 2 mg/kg, prednisolone 1 mg/kg, and prednisolone 5 mg/kg administered intraperitoneally (i.p.) for 14 days. The kindling model was induced by pentylenetetrazole (PTZ) 25 mg/kg i.p. on alternate days. The taxonomic profile was established by applying metagenomic DNA sequencing. There was no change in alpha diversity, and the composition of the gut microbiota between prednisolone and diazepam was similar. The significant increase in Verrucomicrobia, Saccharibacteria, and Actinobacteria may be related to the protective activity against seizures and inflammatory processes that cause some cases of epilepsy. Further studies are needed to investigate the functional influence that these species have on epilepsy and the inflammatory processes that trigger it.

Doença arterial obstrutiva periférica: um estudo comparativo entre revascularizações abertas e endovasculares realizadas em caráter de urgência no sistema público de saúde do Brasil entre 2010 e 2020 / Peripheral artery disease: a comparison of urgent open and endovascular revascularizations on the public health system in Brazil, from 2010 to 2020

RESUMO Contexto A doença arterial obstrutiva periférica apresenta alta prevalência, sendo associada a elevado risco de eventos cardiovasculares. A intervenção cirúrgica ou endovascular faz-se necessária na isquemia crítica do membro. Objetivos Avaliar a distribuição de realização de revascularizações abertas e endovasculares nas diferentes regiões do Brasil, analisando os custos para o sistema de saúde e a mortalidade relacionada a esses procedimentos. Métodos Foi realizado um estudo epidemiológico observacional transversal descritivo para avaliar as cirurgias abertas e endovasculares realizadas no sistema público de saúde do Brasil entre 2010 e 2020. Os dados foram coletados através do Departamento de Informática do SUS (Datasus). Resultados No período analisado, foram registradas 83.218 internações para realização de cirurgias abertas e endovasculares, com um custo total de R$ 333.989.523,17. Houve predominância das internações para os procedimentos percutâneos (56.132) em relação aos cirúrgicos convencionais (27.086). As Regiões Sudeste e Sul concentraram a maior parte do total de procedimentos realizados no país (83%), enquanto a Região Norte foi a que apresentou a menor taxa de internação. Observou-se uma tendência decrescente para os procedimentos abertos, e uma tendência crescente para os endovasculares. A média de permanência hospitalar foi menor nos procedimentos endovasculares (5,3 dias) em relação aos abertos (10,2 dias). Além disso, notou-se uma maior taxa de mortalidade hospitalar relacionada à revascularização aberta em relação à endovascular (5,24% versus 1,56%). Conclusões As técnicas endovasculares consistiram em uma abordagem dominante no tratamento cirúrgico da isquemia crítica, apresentando menor taxa de mortalidade hospitalar e menor tempo de internação quando comparada às cirurgias abertas.

ABSTRACT Background Peripheral artery disease (PAD) has high prevalence and is associated with high risk of cardiovascular events. Surgical or endovascular intervention is necessary in chronic limb-threatening ischemia. Objectives To evaluate the distribution of open and endovascular revascularizations in different regions of Brazil, analyzing the health system costs and mortality related to these procedures. Methods A descriptive, cross-sectional, observational, epidemiological study was carried out to evaluate open and endovascular surgeries performed on the SUS public healthcare system in Brazil, from 2010 to 2020. Data were collected from the SUS Department of Informatics (Datasus). Results Over the period analyzed, 83,218 admissions for open and endovascular surgeries were registered, with a total cost of R$ 333,989,523.17. There were more hospital admissions for percutaneous procedures (56,132) than for conventional surgery (27,086). Most of the procedures (83%) were performed in the country's Southeast and South regions, while the North region had the lowest number of procedures. Over the period evaluated, there was a decreasing trend for open procedures and an increasing trend for endovascular procedures. The average hospital stay was shorter for endovascular procedures (5.3 days) than for open surgery (10.2 days). The analysis of mortality related to these procedures revealed a higher rate of in-hospital mortality associated with open revascularization than with endovascular (5.24% vs. 1.56%). Conclusions Endovascular techniques constituted the primary approach for revascularization treatment in critical limb-threatening ischemia, with a lower in-hospital mortality rate and shorter hospital stay when compared to open surgeries.

Anxiety and its influence on maternal breastfeeding self-efficacy.

OBJECTIVE: to identify the levels of anxiety and breastfeeding self-efficacy in puerperal women at the intervals of 60, 120, and 180 days postpartum; and to verify the influence of anxiety on breastfeeding self-efficacy among these puerperal women. METHOD: an analytical, longitudinal and prospective study, conducted with 186 puerperal women, and which used a sociodemographic and obstetric characterization questionnaire, the State-Trait Anxiety Inventory, and the Breastfeeding Self-Efficacy Scale - Short Form. The analyses were performed by means of descriptive statistics, and Fisher's Exact Test was used. RESULTS: most of the puerperal women presented low levels of trait anxiety (55.4%) and of state anxiety (66.2% at 60 days, 72.8% at 120 days, and 75.5% at 180 days), and a high level of self-efficacy (77.3% at 60 days, 75.3% at 120 days, and 72.1% at 180 days of puerperium). Low levels of trait anxiety and state anxiety were associated with high self-efficacy at 60 days (p=0.0142 and p=0.0159, respectively). CONCLUSION: it is necessary to pay greater attention to the mental health of puerperal women, considering that those who presented low levels of anxiety had higher levels of self-efficacy, a situation that can result in longer exclusive breastfeeding.

A new isostructural halogenated chalcone with optical properties.

Chalcones are organic compounds that present a number of properties. This study presents a comprehensive structural description of a new derivative of a chlorine-substituted chalcone in comparison with a bromine chalcone. Also, supermolecule and sum-over-state approach were used to describe the optical properties of these structures regarding the substitution of the bromine by the chlorine atom. In addition, the electrical properties, dipole moment, linear polarizability, and second IDRI hyperpolarizability were calculated. The linear refractive index and the third-order nonlinear macroscopic susceptibility were evaluated as a function of the applied electric field frequency. Furthermore, the quantum mechanics calculations that were implemented at the M06-2X/6-311++G(d,p) level of the theory for these isostructural chalcones indicate that the change in halogen atoms does not cause meaningful changes in their conformation. Finally, we can postulate that side-to-side and the antiparallel interactions are the interaction forces that drive the crystal growth for new isostructural chalcones. The NLO properties showed title compounds that are good candidates for use as NLO materials.

Parameters of Oxidative Stress and Behavior in Animals Treated with Dexametasone and Submitted to Pentylenetetrazol Kindling.

BACKGROUND AND PURPOSE: Oxidative stress (OS) is defined as an excessive production of reactive oxygen species that cannot be neutralized by the action of antioxidants, but also as an alteration of the cellular redox balance. The relationship between OS and epilepsy is not yet fully understood. The objective of this study was to evaluate the effect of dexamethasone on OS levels and memory in the kindling model induced by pentylenetetrazole. METHODS: The animals were divided in six groups: control group that received no treatment, vehicle group treated with vehicle, diazepam group, and groups treated with dexamethasone (1, 2 and 4 mg/kg). Treated animals received pentylenetetrazole in alternated days for 15 days. Inhibitory avoidance test was conducted in 2 hours and OS was evaluated after animal sacrifice. RESULTS: Regarding the treatment with dexamethasone, there was no significant difference when compared to the control groups in relation to the inhibitory avoidance test. On OS levels, there was a decrease in catalase activity levels in the hippocampus and an increase in thiobarbituric acid reactive substances and glutathione peroxidase levels in the hippocampus. CONCLUSIONS: The anticonvulsant effect of dexametasone remains uncertain. Immunological mechanisms, with the release of cytokines and inflammatory mediators, seem to be the key to this process. The mechanisms that generate OS are probably related to the anticonvulsant effects found.

Effects of prednisolone on behavioral and inflammatory profile in animal model of PTZ-induced seizure.

Epilepsy is a chronic neurological condition that affects 1%-2% of the world population. Although research about the disease is advancing and a wide variety of drugs is available, about 30 % of patients have refractory epilepsy which cannot be controlled with the most common drugs. This highlights the need for a better understanding of the disorder and new types of treatment for it. Against this backdrop, a growing body of evidence has reported that inflammation may play a role both in the origin and in the progression of seizures. It has shown a tendency to be both the root and the result of epilepsy. This investigation aimed to assess the impact of prednisolone, a steroidal anti-inflammatory drug, in an animal model of pentylenetetrazole (PTZ)-induced seizures, at 1 mg/kg and 5 mg/kg doses. We also examined the degree of seizure severity and the modulation of pro-inflammatory cytokines in the treated animals. Four treatment groups were used (saline, diazepam, prednisolone 1 mg/kg, and prednisolone 5 mg/kg) and, in addition to their own daily treatments, subconvulsant doses of pentylenetetrazole (25 mg/kg) were administered every other day during a test protocol that lasted 14 days. After treatment, the cytokines interleukin 1 beta (IL-1ß), interleukin 6 (IL-6), and tumor necrosis factor alpha (TNF-α) were measured in the animals' sera, hippocampi, and prefrontal cortices. Animals treated with prednisolone presented less severe seizures than the animals in the saline group, and there was a decrease in pro-inflammatory cytokine levels in central structures, but not peripheral ones. In short, an animal model of chemically-induced epileptic seizures was used, in which the animals were treated with doses of prednisolone, and these animals presented less severe seizures than the negative control group (saline), in addition to showing decreased levels of pro-inflammatory cytokines IL-6, IL-1ß and TNF-α, in the hippocampi and prefrontal cortices, but not the sera.

Anxiety and its influence on maternal breastfeeding self-efficacy / Ansiedad y su influencia en la autoeficacia para la lactancia materna / Ansiedade e sua influência na autoeficácia materna para amamentação

Objective: to identify the levels of anxiety and breastfeeding self-efficacy in puerperal women at the intervals of 60, 120, and 180 days postpartum; and to verify the influence of anxiety on breastfeeding self-efficacy among these puerperal women. Method: an analytical, longitudinal and prospective study, conducted with 186 puerperal women, and which used a sociodemographic and obstetric characterization questionnaire, the State-Trait Anxiety Inventory, and the Breastfeeding Self-Efficacy Scale - Short Form. The analyses were performed by means of descriptive statistics, and Fisher's Exact Test was used. Results: most of the puerperal women presented low levels of trait anxiety (55.4%) and of state anxiety (66.2% at 60 days, 72.8% at 120 days, and 75.5% at 180 days), and a high level of self-efficacy (77.3% at 60 days, 75.3% at 120 days, and 72.1% at 180 days of puerperium). Low levels of trait anxiety and state anxiety were associated with high self-efficacy at 60 days (p=0.0142 and p=0.0159, respectively). Conclusion: it is necessary to pay greater attention to the mental health of puerperal women, considering that those who presented low levels of anxiety had higher levels of self-efficacy, a situation that can result in longer exclusive breastfeeding.

Objetivo: identificar los niveles de ansiedad y autoeficacia para la lactancia materna en puérperas a intervalos de 60, 120 y 180 días posparto; verificar la influencia de la ansiedad sobre la autoeficacia para amamantamiento en estas madres. Método: estudio analítico, longitudinal y prospectivo, con 186 puérperas, utilizando un cuestionario sociodemográfico y obstétrico, el Inventario de Ansiedad Rasgo-Estado y la Breastfeeding Self-Eficcacy Scale - Short Form. Los análisis se realizaron mediante estadística descriptiva y se utilizó la prueba exacta de Fisher. Resultados: la mayoría de las puérperas presentaron bajo nivel de ansiedad rasgo (55,4%), bajo nivel de ansiedad estado (66,2% a los 60 días, 72,8% a los 120 días y 75,5% a los 180 días) y alto nivel de autoeficacia (77,3% a los 60 días, 75,3% a los 120 días y 72,1% a los 180 días del puerperio). Los niveles bajos de ansiedad rasgo y ansiedad estado se asociaron con una alta autoeficacia a los 60 días (p=0,0142 y p=0,0159 respectivamente). Conclusión: es necesario prestarle mayor atención a la salud mental de las puérperas, dado que las mujeres que presentaban bajos niveles de ansiedad tenían mayores niveles de autoeficacia, lo que puede implicar un mayor tiempo de lactancia materna exclusiva.

Objetivo: identificar os níveis de ansiedade e da autoeficácia para amamentação entre puérperas nos intervalos de 60, 120 e 180 dias pós-parto; verificar a influência da ansiedade na autoeficácia para amamentação entre essas puérperas. Método: estudo analítico, longitudinal e prospectivo, com 186 puérperas, utilizando-se um questionário de caracterização sociodemográfica e obstétrica, o Inventário de Ansiedade Traço-Estado e a Breastfeeding Self-Eficcacy Scale - Short Form. As análises foram feitas pela estatística descritiva, e utilizado o Teste Exato de Fisher. Resultados: a maioria das puérperas apresentou baixo nível de ansiedade-traço (55,4%), baixo nível de ansiedade-estado (66,2% aos 60 dias, 72,8% aos 120 dias e 75,5% aos 180 dias) e alto nível de autoeficácia (77,3% aos 60 dias, 75,3% aos 120 dias e 72,1% aos 180 dias de puerpério). Baixos níveis de ansiedade-traço e de ansiedade-estado associaram-se com a autoeficácia elevada aos 60 dias (p=0,0142 e p=0,0159 respectivamente). Conclusão: é necessária uma maior atenção à saúde mental das puérperas, considerando que mulheres que apresentaram baixos níveis de ansiedade tiveram maiores níveis de autoeficácia, situação que pode implicar em maior tempo de aleitamento materno exclusivo.

Effects of Microplastics Associated with Triclosan on the Oyster Crassostrea brasiliana: An Integrated Biomarker Approach.

Urban waste is a complex mixture of different substances, including microplastics and pharmaceuticals and personal care products. Microplastics have a high affinity for hydrophobic substances. One of these substances is triclosan, a bactericide used in a variety of hygiene products. Therefore, microplastics (MPs) may serve as a vector between triclosan and aquatic organisms. The current study sought to evaluate the effects of the interaction between microplastics and triclosan based on a mechanistic approach in which the oyster Crassostrea brasiliana was used as a model. The organisms were exposed to three conditions: the control, microplastic (MP), and microplastic contaminated with triclosan (MPT). The organisms were exposed for 3 or 7 days. After the exposure time, hemolymph was sampled for performing the neutral red retention time assay and, subsequently, the gills, digestive glands, and adductor muscles were dissected for measuring biomarkers responses (EROD, DBF, GST, GPx, GSH, lipid peroxidation, DNA strand breaks, and AChE). Our results demonstrate combined effects of MPs associated with triclosan on oyster physiology and biochemistry, as well as on lysosomal membrane stability. These results contribute to understanding the effects of contaminants of emerging concern and microplastics on aquatic organisms.

Presence of antigenotoxic and anticytotoxic effects of the chalcone 1E,4E-1-(4-chlorophenyl)-5-(2,6,6-trimethylcyclohexen-1-yl)penta-1,4-dien-3-one using in vitro and in vivo assays.

Chalcones are chemically defined as α,ß-unsaturated ketones with a 1,3-diphenyl-2-propen-1-one nucleus. These compounds occur naturally in plants and are considered precursors of flavonoids. Given that evaluating genetic toxicology tests is essential in investigating the safe use and chemopreventive potential of different natural and synthetic compounds, this study aimed to assess the genotoxic, cytotoxic, antigenotoxic, and anticytotoxic activity of the chalcone 1E,4E-1-(4-chlorophenyl)-5-(2,6,6-trimethylcyclohexen-1-yl)penta-1,4-dien-3-one (CAB7ß). The CAB7ß was synthesized via Claisen-Schmidt reaction. The Ames test was applied using the co-treatment model as well as a micronucleus assay of mouse bone marrow with co-, pre- and post-treatment models. Our results indicate no genotoxic effect for CAB7ß in any of the tests applied. At all the concentrations used, CAB7ß showed a significant DNA protective effect against the mutagenic action of 4-nitroquinoline-1-oxide and sodium azide according to the Ames test, and against doxorubicin in the co-, pre- and post-treatment models of the micronucleus assay. CAB7ß alone displayed cytotoxic activity in the micronucleus test. At concentrations of 12,5 and 50 µg/plate, CAB7ß showed a moderate cytotoxic profile only in Salmonella typhimurium strain TA98. However, an anticytotoxic effect was observed against S. typhimurium strain TA100 for all the concentrations tested and during co-, pre- and post-treatment in the micronucleus assay. It was concluded that CAB7ß exhibited a slightly cytotoxic effect in S. typhimurium strain TA98 and significant antigenotoxic and anticytotoxic effects in cells of mouse, making it a promising candidate in chemoprevention and possibly in the development of new cancer treatments.

Comparison between electroporation and polyfection in pig sperm: efficiency and cell viability implications.

SummaryThe aim of this study was to optimize protocols for electroporation (EP) and polyfection (PLF) using polyethyleneimine (PEI) for pig sperm transfection and to determine which method was the most efficient. For EP standardization, different voltages, amounts and times of electric pulses were tested using propidium iodide (PI) as reporter. For PLF standardization, different concentrations of fluorescein isothiocyanate (FITC)-labelled PEI (PEI/FITC) were incubated with sperm for different periods of time. Flow cytometry was performed to evaluate the best protocol in terms of cell viability, including cytoplasmic membrane, acrosome, chromatin integrities and mitochondrial potential using the FITC probe, PI, acridine orange (AO) and JC1. Transfections with the plasmid pmhyGENIE-5 were carried out under optimum conditions for each procedure (EP: 500 volts, 500 µs and two pulses; PLF: PEI 0.5 mg/ml and incubation time 10 min). Transfection efficacy was assessed by fluorescence in situ hybridization (FISH). A lower transfection rate was observed for sperm in the control group (17.8%) compared with EP (36.7%), with PLF (76.8%) being the most efficient. These results suggest that the EP and PEI could be an efficient and low cost transfection method for swine sperm. Notably, treated cells showed higher plasmatic the membrane damage (PMD) and/or acrosome damage (AD) indexes, therefore the combination of this procedure with biotechniques that facilitate fecundation (i.e. in vitro fertilization or intracytoplasmic sperm injection) or even inclusion of antioxidant or anti-apoptotic drugs to improve spermatozoa viability would be important.