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1.
Artigo em Inglês, Português | LILACS | ID: biblio-1561697

RESUMO

Problema: Experiência da intervenção de uma equipe multiprofissional da Estratégia Saúde da Família (ESF) em uma família por meio das ferramentas de abordagem familiar. Entre os problemas identificados no caso estão a sobrecarga de trabalho da paciente índice, diagnóstico de Transtorno do Espectro Autista (TEA) nos filhos dela, etilismo crônico do esposo e relacionamento hostil no ciclo familiar. Método: Estudo descritivo, qualitativo, de relato de experiência, desenvolvido em uma família da área de abrangência da equipe da ESF no segundo semestre de 2019, escolhida em razão da hiperutilização do serviço pela paciente índice. As ferramentas aplicadas foram o genograma, ecomapa, Fundamental Interpersonal Relations Outcome (FIRO), problem, roles, affect, communication, time in life, illness, coping with stress, environment/ecology (PRACTICE) e ciclo de vida familiar. Resultados: Com a aplicação das ferramentas foram identificadas as estruturas e modos de compartilhamento das relações familiares, os problemas de saúde presentes, os possíveis vínculos identificados e o estágio no ciclo de vida. Como modos de intervenção, a equipe propôs consultas de cuidado em saúde, assistência psicológica e escutas qualificadas. Além disso, por meio de reuniões intersetoriais, foi solucionado o problema escolar que afetava a condição de saúde da paciente. Conclusão: A aplicação das ferramentas foi um excelente método para realizar o estudo, pois permitiu uma visão global da família, além de identificar fragilidades a serem corrigidas ou minimizadas com recurso a intervenções pela equipe de saúde.


Problem: Intervention experience of a multidisciplinary team of the Family Health Strategy (ESF) through family approach tools. Among the problems identified in the case are the work overload of the index patient, diagnosis of autism spectrum disorder (ASD) in her children, husband's chronic alcoholism and hostile relationship within the family circle. Method: Descriptive and qualitative experience report. Developed by an ESF team in a family in the coverage area. Experience conducted in the second half of 2019. The tools applied were the genogram, ecomap, FIRO, PRACTICE and the family life cycle. The tools were chosen because of the index patient's frequent use of the ESF's services. Results: Through the application of the tools, the structures and ways of sharing family relationships, the health problems, the possible bonds identified and the stage in the life cycle were identified. As modes of intervention, the team proposed health care consultations, psychological assistance and qualified listening. In addition, through intersectional meetings, a school problem that affected the patient's health condition was solved. Conclusion: The application of the tools was an excellent method to carry out the study. It allowed a global view of the family, in addition to identifying weaknesses to be corrected or minimized, through interventions by the health team.


Problema: Experiencia de la intervención de un equipo multidisciplinario de la Estrategia Salud de la Familia (ESF) en una familia a través de herramientas de abordaje familiar. Entre los problemas identificados en el caso están la sobrecarga de trabajo de la paciente índice, diagnóstico de Trastorno del Espectro Autista (TEA) en sus hijos, alcoholismo crónico del marido y relación hostil dentro del ciclo familiar. Método: Estudio descriptivo, cualitativo de relato de experiencia desarrollado en una familia de la zona de cobertura del equipo de la ESF en el segundo semestre de 2019. Las herramientas aplicadas fueron el genograma, ecomapa, F.I.R.O., P.R.A.C.T.I.C.E. y el ciclo de vida familiar, elegido por la sobreutilización del paciente índice de los servicios de la ESF. Resultados: Mediante la aplicación de las herramientas se identificaron las estructuras y formas de compartir las relaciones familiares, los problemas de salud presentes, los posibles vínculos identificados y la etapa del ciclo de vida. Como modos de intervención, el equipo propuso la consulta de salud, la asistencia psicológica y la escucha cualificada. Además, a través de reuniones intersectoriales se solucionó un problema escolar que afectaba el estado de salud del paciente. Conclusión: La aplicación de las herramientas fue un método excelente para la realización del estudio, ya que permitió una visión global de la familia, además de identificar debilidades a ser corregidas o minimizadas, a través de intervenciones del equipo de salud.


Assuntos
Humanos , Atenção Primária à Saúde , Estratégias de Saúde Nacionais , Relações Familiares , Práticas Interdisciplinares
2.
Anim Reprod ; 21(2): e20230063, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39021495

RESUMO

Lipid metabolism is essential for ensuring oocyte maturation and embryo development. ß-Oxidized fatty acids (FA) are a potent source of energy for cells, particularly for bovine somatic follicular cells. Superstimulatory protocols using follicle stimulating hormone (FSH) or FSH combined with equine chorionic gonadotropin (eCG) are capable of stimulating the follicular microenvironment and drive the expression of biomarker genes associated with lipid metabolism in the cumulus-oocyte complex (COC) for better embryo development. In this study, we assesed the effects of FSH and FSH/eCG protocols on the expression of genes related to lipid metabolism in bovine granulosa cells (GCs). Further, we measured triglyceride levels in follicular fluid (FF) obtained from both superstimulatd and non-superstimulated cows (synchronized cows). In summary, superstimulation with gonadotropins maintained the TG levels in bovine FF and ensured GCs mRNA abundance of ACSL1, ACSL3, ACSL6, SCD, ELOVL5, ELOVL6, FASN, FADS2, and SREBP1. We, however, found the abundance of CPTIB mRNA to be lower in GCs obtained from cows subjected to FSH/eCG protocols than synchronized cows. In conclusion, the findings of this study showed that ovarian superstimulation around the preovulatory phase has a mild impact on the lipid metabolism in GCs.

3.
Artigo em Inglês | MEDLINE | ID: mdl-39063511

RESUMO

The aim of this study was to examine the association between health vulnerability and food consumption according to the NOVA classification within primary care in a major Brazilian city. A cross-sectional study was conducted among adults over 20 years old. These participants were part of a representative sample from the Health Academy Program (PAS) in Belo Horizonte, Brazil. We evaluated socio-demographic variables, self-reported illnesses, perceived health and quality of life, and the length of participation in PAS. Health vulnerability was gauged through the Health Vulnerability Index (HVI), which is calculated for each census sector and classified as low, medium, and high/very high. On the other hand, food consumption was determined by evaluating the average consumption described in a 24 h diet recall (24HR) and categorizing it under the NOVA classification: culinary preparations, processed foods, and ultra-processed foods (UPFs). The average calorie intake was 1429.7 kcal, primarily from culinary preparations (61.6%) and UPFs (27.4%). After adjustments, individuals residing in high/very high-HVI areas consumed more culinary preparations (ß = 2.7; 95%CI: 4.7; 0.7) and fewer UPFs (ß = -2.7; 95%CI: -4.7; -0.7) compared to those from low-vulnerability areas. PAS participants residing in more vulnerable areas reported healthier dietary habits, consuming more homecooked meals and fewer UPFs. These findings underscore the importance of concentrating efforts on promoting and preserving healthy eating habits and emphasizing the value of home cooking in the most vulnerable regions.


Assuntos
Atenção Primária à Saúde , Humanos , Masculino , Feminino , Adulto , Estudos Transversais , Pessoa de Meia-Idade , Brasil , Atenção Primária à Saúde/estatística & dados numéricos , Fatores Socioeconômicos , Dieta/estatística & dados numéricos , Adulto Jovem , Idoso , Comportamento Alimentar , Cidades
4.
Foods ; 13(10)2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38790821

RESUMO

This study investigated the antimicrobial effects of lactic acid (LA) (3%) and peracetic acid (PA) (300 ppm) on tilapia fillets (Oreochromis niloticus) by fogging (15 min) or by immersion (2 s) in a pool of Escherichia coli (NEWP 0022, ATCC 25922, and a field-isolated strain), Staphylococcus aureus (ATCC 25923 and a field-isolated strain), and Salmonella Typhimurium (ATCC 13311 and ATCC 14028), as well as the effects on the physicochemical characteristics of the fillets. Fogging was effective and the best application method to control S. Typhimurium regardless of the acid used, promoting reductions of 1.66 and 1.23 log CFU/g with PA and LA, respectively. Regarding E. coli, there were significant reductions higher than 1 log CFU/g, regardless of the treatment or acid used. For S. aureus, only immersion in PA showed no significant difference (p < 0.05). For other treatments, significant reductions of 0.98, 1.51, and 1.17 log CFU/g were observed for nebulized PA, immersion, and LA fogging, respectively. Concerning the pH of the samples, neither of the acids used differed from the control. However, treatments with LA, and fogging with PA, reduced the pH compared to immersion in PA. As for color parameters, L* and a* values showed changes regardless of the acid or method used, resulting in an improved perception of fillet quality. These results indicate that fogging and immersion are alternatives for reducing S. Typhimurium, E. coli, and S. aureus in tilapia fillets.

5.
Acta Cir Bras ; 39: e392224, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38629653

RESUMO

PURPOSE: To evaluate, by quantitative and qualitative methods, the glomerular ultrastructure in Wistar rats fed a cafeteria diet. METHODS: Male Wistar rats were divided into two groups at 21 days of age: control (C, n = 10) and cafeteria diet (CAF, n = 8). The animals were followed up until 5 months of age, followed by euthanasia. The blood, kidneys, and fat deposits--epididymal, retroperitoneal, and subcutaneous--were extracted and analyzed. Data were analyzed by Student's t test, and p < 0.05 was considered statistically significant. RESULTS: The cafeteria diet promoted glucose intolerance, hyperglycemia (p < 0.0001), and deposition of retroperitoneal fat (p < 0.005). Scanning electron microscopy revealed that the length of the foot process was similar in both groups. The quantitative analyses by transmission electron microscopy revealed that the cafeteria diet reduced the thickness of the glomerular basement membrane (p < 0.05). CONCLUSIONS: The intake of lipids and simple carbohydrates were found to be associated with alteration in the glomerular ultrastructure. However, more studies are needed to evaluate not only the effects of high-protein and high-fat diets on components of the glomerular filtration barrier, but also renal physiology.


Assuntos
Dieta , Hiperglicemia , Ratos , Animais , Masculino , Ratos Wistar , Dieta/efeitos adversos , Rim , Dieta Hiperlipídica/efeitos adversos
6.
Anim Reprod ; 21(1): e20230112, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38628494

RESUMO

Steroids and gonadotrophins are essential for the regulation of late stages of preantral development and antral follicular development. Although the luteinizing hormone receptor (LHCGR) has been detected in the preantral follicles of rats, rabbits, and pigs, its expression, in bovine fetal ovary, has not been demonstrated. Based on this, we aimed to investigate the expression of the LHCGR and LHCGR mRNA binding protein (LRBP), as well as, to quantify bta-miR-222 (a regulatory microRNA of the LHCGR gene) during the development of bovine fetal ovary. In summary, LHCGR expression was observed in the preantral follicle in bovine fetal ovary, from oogonias to primordial, primary and secondary stages, and the mRNA abundance was lower on day 150 than day 60. However, the mRNA abundance of LRBP followed the opposite pattern. Similar to LRBP, the abundance of bta-miR-222 was higher on day 150 than day 60 or 90 of gestation. The LHCGR protein was detected in oogonia, primordial, primary, and secondary follicles. Moreover, both oocytes and granulosa cells showed positive immunostaining for LHCGR. In conclusion, we suggest the involvement of LHCGR/LRBP/bta-mir222 with mechanisms related to the development of preantral follicles in cattle.

7.
J Sports Sci ; 42(1): 17-24, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38466902

RESUMO

School-based interventions are needed due to the low levels of physical activity (PA) in adolescents. The aim is to examine the mediation effects of psychosocial factors (attitude, self-efficacy, social support from parents, friends, general teachers, and PE teachers, and environment school perception) and moderation by sex, school grade, and socioeconomic level of a school-based PA intervention on the PA practice among adolescents. The Movimente Programme is a randomised controlled trial at schools in southern Brazil (n = 921 adolescents). Strategies included teacher training, educational actions, and environmental changes. Adolescents self-reported their weekly PA. Potential psychosocial mediators and moderators were investigated through validated questionnaires in a Brazilian sample. The product of the coefficients with percentile bootstrapping 95% confidence interval was performed. The Movimente Programme was related to positive changes in adolescents' perception of the school environment and social support from general and physical education teachers. Most psychosocial variables (attitude, self-efficacy, social support from friends, and social support from teachers) were associated with PA, but none mediated the impact of the Movimente Programme on PA. Results varied according to sex and school grade. The Movimente Programme increased the adolescents' perception of the school environment and social support from teachers, but no mediators were confirmed.


Assuntos
Exercício Físico , Promoção da Saúde , Humanos , Adolescente , Brasil , Promoção da Saúde/métodos , Instituições Acadêmicas , Apoio Social
8.
Vet Res Commun ; 48(2): 1135-1147, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38191818

RESUMO

The polyspermy occurrence is considerably lower under in vivo compared to in vitro embryo culture conditions, suggesting that the presence of some factors in the maternal environment is responsible for this. The α-L-fucosidase (FUCA) is a natural glycosidase present in the oviductal fluid, therefore, this study aimed at investigating the effect of adding FUCA to the hardening of the zona pellucida (ZP), polyspermy control, and embryonic yield and quality of bovine blastocysts produced in vitro. In the first experiment, the effect of FUCA (0.125 U/mL) was evaluated during the entire in vitro fertilization (IVF). However, it was demonstrated to be embryotoxic by completely inhibiting the blastocyst formation. In the second experiment, the FUCA (0.125 U/mL) was tested as short-term incubation before IVF (pre-fertilization step) for 30 min or 2 h, which demonstrated that FUCA treatment for 30 min resulted in ZP hardening. In the third experiment, a pre-fertilization FUCA treatment (1 h) at different concentrations (0, 0.0625, and 0.125 U/mL) showed that FUCA (0.0625 U/mL) improved pre-fertilization ZP hardening and tended to increase monospermic fertilization rates but did not improve embryo yield and quality. Together, it has been demonstrated that FUCA can induce oocyte pre-fertilization ZP hardening and might improve monospermic fertilization performance, and this effect is dependent on both variables (protein concentration and incubation time).


Assuntos
Zona Pelúcida , alfa-L-Fucosidase , Bovinos , Animais , alfa-L-Fucosidase/farmacologia , Oócitos , Fertilização in vitro/veterinária , Fertilização in vitro/métodos , Fertilização
9.
Acta cir. bras ; Acta cir. bras;39: e392224, 2024. tab, ilus
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1556673

RESUMO

Purpose: To evaluate, by quantitative and qualitative methods, the glomerular ultrastructure in Wistar rats fed a cafeteria diet. Methods: Male Wistar rats were divided into two groups at 21 days of age: control (C, n = 10) and cafeteria diet (CAF, n = 8). The animals were followed up until 5 months of age, followed by euthanasia. The blood, kidneys, and fat deposits­­epididymal, retroperitoneal, and subcutaneous­­were extracted and analyzed. Data were analyzed by Student's t test, and p < 0.05 was considered statistically significant. Results: The cafeteria diet promoted glucose intolerance, hyperglycemia (p < 0.0001), and deposition of retroperitoneal fat (p < 0.005). Scanning electron microscopy revealed that the length of the foot process was similar in both groups. The quantitative analyses by transmission electron microscopy revealed that the cafeteria diet reduced the thickness of the glomerular basement membrane (p < 0.05). Conclusions: The intake of lipids and simple carbohydrates were found to be associated with alteration in the glomerular ultrastructure. However, more studies are needed to evaluate not only the effects of high-protein and high-fat diets on components of the glomerular filtration barrier, but also renal physiology.


Assuntos
Animais , Ratos , Microscopia Eletrônica de Varredura , Ratos Wistar , Dieta , Rim
10.
Rev. CEFAC ; 26(2): e8023, 2024. tab
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1535113

RESUMO

ABSTRACT Purpose: to analyze the quality of life and metamemory and verify their predictors in students during the COVID-19 pandemic. Methods: a cross-sectional survey carried out through online collection with the application of an initial questionnaire to characterize the sample, the WHOQOL-brief to investigate the quality of life, and the Metamemory Questionnaire in Adults (short version) - MIAr to evaluate metamemory in a group of undergraduate and postgraduate students. Data were analyzed using descriptive and inferential statistics. Multiple linear regression was performed to verify the predictor variables. A significance level of 5% (p ≤ 0.05) was considered. Results: 977 university students participated in the study, the majority (70.73%) of whom were females and with an income range below three minimum wages (63.56%). For quality of life, income range, being in the risk group for COVID-19, and age were predictors for both the undergraduate and postgraduate groups. In contrast, on an excellent metamemory, the predictors were male gender and age. Conclusion: for students, during the COVID-19 pandemic, the main predictor of quality of life was having a higher income bracket, and the main predictor of metamemory was being a male.


RESUMO Objetivo: analisar a qualidade de vida e a metamemória e verificar seus preditores em estudantes durante a pandemia da COVID-19. Métodos: trata-se de uma pesquisa transversal realizada por meio de coleta online com a aplicação de um questionário inicial para caracterizar a amostra, do WHOQOL-bref para investigar a qualidade de vida e do Questionário de Metamemória em Adultos (versão reduzida) - MIAr para avaliar a metamemória, em um grupo de estudantes de graduação e outro de pós-graduação. Os dados foram analisados por meio de estatística descritiva e inferencial. Realizou-se a regressão linear múltipla para verificar as variáveis preditoras. Foi considerado o nível de significância de 5% (p≤0,05). Resultados: participaram do estudo 977 universitários, sendo a maioria (70,73%) do gênero feminino e com faixa de renda menor que três salários-mínimos (63,56%). Para a qualidade de vida, tanto para o grupo de graduandos quanto de pós-graduandos, a faixa de renda, o grupo de risco para COVID-19 e a idade foram preditores, enquanto para uma boa metamemória os preditores foram o gênero masculino e a idade. Conclusão: para os estudantes, durante a pandemia da COVID-19, o principal preditor da qualidade de vida foi possuir maior faixa de renda e o da metamemória foi ser do gênero masculino.

11.
Psicol. USP ; 35: e190030, 2024.
Artigo em Português | LILACS, Index Psicologia - Periódicos | ID: biblio-1564954

RESUMO

Resumo: Desde o início do desenvolvimento de sua teoria, Freud observara que os psicóticos não respondiam ao tratamento psicanalítico, levando à ideia de que à psicose corresponderia um mecanismo de constituição diferente. Aos poucos, a transferência passou a ser alvo da investigação que conduzisse à descoberta de um modo a lidar com a psicose. Mas as descobertas freudianas foram insuficientes para se estabelecer um laço transferencial satisfatório para os psicóticos. Com Jacques Lacan, alguns conceitos freudianos sofreram modificação, com a criação de operadores próprios, surgindo a erotomania, consequência estrutural e lógica do vínculo entre analista e psicótico. Sendo assim, este artigo busca demonstrar uma clínica possível, sob a perspectiva psicanalítica, para o tratamento da psicose, a partir do estabelecimento do laço transferencial, por meio do manejo apropriado do gozo, que promova estabilização e consiga mitigar o sofrimento, como saída possível para o problema da indicação do tratamento psicanalítico aos psicóticos.


Résumé : Au début de ses développements théoriques, Freud a observé que les psychotiques ne répondaient pas au traitement psychanalytique, indiquant qu'un mécanisme de formation différent correspondrait à la psychose. Progressivement, le transfert est devenu la cible de la découverte d'une manière pour faire face à la psychose. Jacques Lacan a modifié certains concepts freudiens pour crée des opérateurs propres et a inventé l'érotomanie, la conséquence structurelle et logique de la relation entre analyste et psychotique. Cet article propose une clinique possible, dans la perspective psychanalytique, comme solution possible au traitement de la psychose à partir de l'établissement du transfert par le biais du maniement approprié de la jouissance qui conduise à la stabilisation.


Abstract: Early in his theoretical developments, Freud noticed that psychotics did not respond to the psychoanalytic treatment, suggesting that psychosis would correspond to a different constitution mechanism. Gradually, transference became the target of investigation for discovering a way to tackle psychosis. However, Freud's findings were insufficient to solve the issue of establishing a satisfactory transference bond with psychotics. Jacques Lacan modified some Freudian concepts to create his own operators and coined erotomania, the structural and logical consequence of the bond between analyst and psychotic. This article proposes a possible clinic, from a psychoanalytic perspective, as a possible treatment route for psychosis by establishing a transference bond via the appropriate management of jouissance, which promotes stabilization.


Resumen: Desde el comienzo del desarrollo de su teoría, Freud observó que los psicóticos no respondían al tratamiento psicoanalítico, lo que dio lugar a la idea de que la psicosis correspondía a un mecanismo de formación diferente. Gradualmente, la transferencia se convirtió en el objetivo de la investigación que podría conducir al descubrimiento de una manera peculiar para hacer frente a la psicosis. En el estudio de Jacques Lacan, algunos conceptos freudianos se han modificado con la creación de operadores propios, y emergió la erotomanía como consecuencia estructural y lógica de la relación entre el analista y el psicótico. Así, este artículo busca demostrar una posible clínica desde una perspectiva psicoanalítica para el tratamiento de la psicosis, basada en el establecimiento del vínculo transferencial, a través del adecuado manejo del goce que promueva la estabilización y logre mitigar el sufrimiento, como una posible salida al problema de indicar tratamiento psicoanalítico a los psicóticos.


Assuntos
Psicanálise , Transtornos Psicóticos , Transferência Psicológica , Angústia Psicológica
12.
Front Psychol ; 14: 1261605, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38106390

RESUMO

Introduction: Evaluating signs of anxiety related to body appearance is becoming increasingly important in contemporary society and, in this sense, the Social Appearance Anxiety Scale (SAAS) seems an interesting alternative of measurement. Objectives: To evaluate the psychometric properties of the Portuguese version of the SAAS when applied to Brazilian adults who practice physical exercise and verify the influence of individual characteristics on participants' social appearance anxiety. Methods: This was a cross-sectional study conducted online. The participants completed the SAAS and a demographic questionnaire. The psychometric properties of the SAAS one-factor model were evaluated using confirmatory factor analysis. A structural model was built for men and women to verify the influence of individual characteristics of the participants on social appearance anxiety. Results: 1,495 individuals participated in the study (70.8% women; mean age = 29.5, SD = 8.9 years). The data obtained with the SAAS presented good indicators of validity and reliability for both genders (CFI > 0.97, TLI > 0.97, SRMR = 0.04, α > 0.97, ω > 0.85). For both men and women, greater levels of social appearance anxiety were observed among younger participants, who had a higher body mass index, self-reported an eating disorder, and perceived a change in their body after the onset of the COVID-19 pandemic. For women specifically, higher income and having started physical exercise more recently were associated with greater levels of social appearance anxiety. Conclusion: The findings supported the validity and reliability of the data obtained with the SAAS and revealed that when investigating social appearance anxiety in future research and clinical protocols, specific individual characteristics should be considered.

14.
Rev. biol. trop ; Rev. biol. trop;71(1)dic. 2023.
Artigo em Inglês | LILACS, SaludCR | ID: biblio-1514967

RESUMO

Introduction: The type of land use surrounding the remnants of tropical forest may generate changes in the characteristics of plant populations and communities. Consequently, there may be a significant reduction in processes of pollination and diasporas dispersion. Therefore, causing changes in some parameters of seed rain. Objective: To characterize and compare seed density, species richness, floristic composition, habit, dispersal syndrome, and successional category of seed rain between urban and rural fragments of Atlantic Forest, in the 2015 and 2016 weather seasons. Methods: The study areas were defined after mapping and quantification of urban and rural occupations around the remnants, based on satellite images. In each fragment, were installed 36 collectors of 0.25 m2. The material was collected monthly during two consecutive years. Results: Seed rain richness was higher in the urban fragment during the rainy season in the two years, whereas it was similar between the fragments in the dry season. The seed density in the rural fragment was higher than in the urban during the rainy season; did not vary in urban between years or between seasons; and it was higher in the rural fragment in the rainy season of one year. There was a difference in the floristic composition of the seed rain between the fragments along time. The variations in the functional attributes of habit, dispersal syndrome, and successional category, were explained by the variables fragment, season, and year. Conclusions: Differences in the characteristics of the seed rain between the fragments might reflect the spatial and temporal heterogeneity, due to the diverse uses of the soil and external pressures (anthropogenic actions) present in the surroundings of the forest fragments and temporal variation in precipitation.


Introducción: El tipo de uso del suelo que rodea los remanentes de bosque tropical puede generar cambios en las características de las poblaciones y comunidades vegetales. En consecuencia, puede haber una reducción significativa en los procesos de polinización y dispersión de las diásporas. Por lo tanto, provocando cambios en algunos parámetros de la lluvia de semillas. Objetivo: Caracterizar y comparar la densidad de semillas, la riqueza de especies, la composición florística, el hábito, el síndrome de dispersión y la categoría sucesional de la lluvia de semillas entre fragmentos urbanos y rurales de Mata Atlántica, en las estaciones climáticas del 2015 y 2016. Métodos: Las áreas de estudio se definieron luego del mapeo y cuantificación de las ocupaciones urbanas y rurales alrededor de los remanentes, con base en imágenes satelitales. En cada fragmento se instalaron 36 colectores de 0.25 m2. El material fue recolectado mensualmente durante dos años consecutivos. Resultados: La riqueza de lluvia de semillas fue mayor en el fragmento urbano durante la estación lluviosa en los dos años, mientras que fue similar entre los fragmentos en la estación seca. La densidad de semillas en el fragmento rural fue mayor que en el urbano durante la estación lluviosa; no varió en urbano entre años o entre estaciones; y fue mayor en el fragmento rural en la estación lluviosa del primer año. Hubo una diferencia en la composición florística de la lluvia de semillas entre los fragmentos a lo largo del tiempo. Las variaciones en los atributos funcionales de hábito, síndrome de dispersión y categoría sucesional, fueron explicadas por las variables fragmento, estación y año. Conclusiones: Las diferencias en las características de la lluvia de semillas entre los fragmentos podrían reflejar la heterogeneidad espacial y temporal, debido a los diversos usos del suelo y presiones externas (acciones antropogénicas) presentes en el entorno de los fragmentos de bosque y variación temporal de la precipitación.


Assuntos
Estações do Ano , Dispersão de Sementes/fisiologia , Floresta Úmida , Brasil
15.
Zygote ; 31(6): 582-587, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37955189

RESUMO

Traditionally, in vitro oocyte and embryo culture progresses through a series of varying culture medium. To investigate simplifying the in vitro production of bovine cumulus-oocyte complexes (COCs), this study used synthetic oviductal fluid (SOF) supplemented with conjugated linoleic acid (CLA). Special interest was placed on gene expression linked to lipid metabolism and oocyte maturation. COCs were matured in different media: Medium 199 (M199 group), M199 with 100 µM CLA (M199 + CLA group), SOF (SOF group), and SOF with 100 µM CLA (SOF + CLA group). COCs matured with SOF showed a higher relative abundance of mRNA of quality indicators gremlin 1 (GREM1) and prostaglandin-endoperoxide synthase 2 (PTGS2) in oocytes, and GREM1 in cumulus cells compared with in the M199 group. SOF medium COCs had a higher relative abundance of fatty acid desaturase 2 (FADS2) compared with the M199 group, which is essential for lipid metabolism in oocytes. Furthermore, the abundance of stearoyl-coenzyme A desaturase 1 (SCD1) in oocytes matured with SOF was not influenced by the addition of CLA, whereas the relative abundance of SCD1 was reduced in M199 medium with CLA. We concluded that maturation in SOF medium results in a greater abundance of genes linked to quality and lipidic metabolism in oocytes, regardless of the addition of CLA.


Assuntos
Fertilização in vitro , Metabolismo dos Lipídeos , Feminino , Animais , Bovinos , Metabolismo dos Lipídeos/genética , Oócitos/metabolismo , Oogênese , Meios de Cultura/farmacologia , Meios de Cultura/metabolismo , Expressão Gênica , Técnicas de Maturação in Vitro de Oócitos/métodos
17.
Genes (Basel) ; 14(9)2023 09 15.
Artigo em Inglês | MEDLINE | ID: mdl-37761945

RESUMO

The regulation of the hypothalamic-pituitary-adrenal (HPA) axis is associated with polymorphisms and the methylation degree of the glucocorticoid receptor gene (NR3C1) and is potentially involved in the development of metabolic syndrome (MetS). In order to evaluate the association between MetS with the polymorphisms, methylation, and gene expression of the NR3C1 in the genetically isolated Brazilian Mennonite population, we genotyped 20 NR3C1 polymorphisms in 74 affected (MetS) and 138 unaffected individuals without affected first-degree relatives (Co), using exome sequencing, as well as five variants from non-exonic regions, in 70 MetS and 166 Co, using mass spectrometry. The methylation levels of 11 1F CpG sites were quantified using pyrosequencing (66 MetS and 141 Co), and the NR3C1 expression was evaluated via RT-qPCR (14 MetS and 25 Co). Age, physical activity, and family environment during childhood were associated with MetS. Susceptibility to MetS, independent of these factors, was associated with homozygosity for rs10482605*C (OR = 4.74, pcorr = 0.024) and the haplotype containing TTCGTTGATT (rs3806855*T_ rs3806854*T_rs10482605*C_rs10482614*G_rs6188*T_rs258813*T_rs33944801*G_rs34176759*A_rs17209258*T_rs6196*T, OR = 4.74, pcorr = 0.048), as well as for the CCT haplotype (rs41423247*C_ rs6877893*C_rs258763*T), OR = 6.02, pcorr = 0.030), but not to the differences in methylation or gene expression. Thus, NR3C1 polymorphisms seem to modulate the susceptibility to MetS in Mennonites, independently of lifestyle and early childhood events, and their role seems to be unrelated to DNA methylation and gene expression.


Assuntos
Síndrome Metabólica , Receptores de Glucocorticoides , Humanos , Metilação de DNA/genética , Genótipo , Glucocorticoides , Síndrome Metabólica/genética , Receptores de Glucocorticoides/genética , Receptores de Glucocorticoides/metabolismo , Etnicidade
18.
Int J Mol Sci ; 24(18)2023 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-37762363

RESUMO

During embryo development, the endoplasmic reticulum (ER) acts as an important site for protein biosynthesis; however, in vitro culture (IVC) can negatively affect ER homeostasis. Therefore, the aim of our study was to evaluate the effects of the supplementation of tauroursodeoxycholic acid (TUDCA), an ER stress inhibitor, in the IVC of bovine embryos. Two experiments were carried out: Exp. 1: an evaluation of blastocyst rate, hatching kinetics, and gene expression of hatched embryos after being treated with different concentrations of TUDCA (50, 200, or 1000 µM) in the IVC; Exp. 2: an evaluation of the re-expansion, hatching, and gene expression of hatched embryos previously treated with 200 µM of TUDCA at IVC and submitted to vitrification. There was no increase in the blastocyst and hatched blastocyst rates treated with TUDCA in the IVC. However, embryos submitted to vitrification after treatment with 200 µM of TUDCA underwent an increased hatching rate post-warming together with a down-regulation in the expression of ER stress-related genes and the accumulation of lipids. In conclusion, this work showed that the addition of TUDCA during in vitro culture can improve the cryotolerance of the bovine blastocyst through the putative modulation of ER and oxidative stress.


Assuntos
Retículo Endoplasmático , Ácido Tauroquenodesoxicólico , Bovinos , Animais , Ácido Tauroquenodesoxicólico/farmacologia , Suplementos Nutricionais
20.
J Child Adolesc Trauma ; 16(3): 607-613, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37593059

RESUMO

This study is an investigation of the associations of time spent in different screen time activities with bullying among Brazilian adolescents. In this cross-sectional study, adolescents answered questions related to bullying in the past 30 days and reported the weekly volume of screen time spent studying, working, watching videos, playing video games, and using social media applications. Multilevel logistic regression models were used. Our results indicate that higher social media use was associated with higher odds of bullying victimization among males but not females. Excessive use of screen time for work and social media purposes was associated with a higher likelihood of bullying victimization.

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