Morpho-physiological and phytohormonal changes during the induction of adventitious root development stimulated by exogenous IBA application in Magnolia biondii Pamp / Alterações morfofisiológicas e fito-hormonais durante a indução do desenvolvimento radicular adventício estimulado pela aplicação exógena do AIB em Magnolia biondii Pamp

Magnolia biondii Pamp is an important ornamental tree species widely grown and used as a rootstock in the propagation of different Magnolia varieties. In the current studies, anatomical, physiological and endogenous hormones were studied to check the effect of IBA 750 mg/L on the adventitious rooting and to provide theoretical and technical support for the propagation of Magnolia biondii Pamp through stem cuttings. Two thousand stem cuttings were prepared and divided into two groups i.e., IBA treated cuttings and water control. For the evaluation of antioxidant enzyme activities, and endogenous hormones levels, samples were collected on the day of planting and each 5th day and further steps were carried out in the laboratory according to the protocols and proper precautions. For the anatomical observations, samples were collected on the 13th, 15th, and 17th day for IBA treated cuttings while 21st, 23rd, and 25th day for control. Collected samples were preserved in the FAA solution and further observations were carried out in the laboratory. Anatomical observations showed that it took 13 days for the differentiation of root primordia to the appearance of young adventitious roots in IBA treated cuttings, while it took 21 days to develop primordia in the control. Antioxidant enzyme activities involved in ROS were significantly higher in the IBA treated cuttings compared to control. POD showed a peak on the 13th day before the emergence of roots in IBA treated cuttings while it showed a peak on the 21st day in the control. PPO showed a peak on the 21st day in the IBA treated cuttings while it showed a peak on the 29th day in the control. SOD showed a peak on the 17th day in IBA treated cuttings, while it showed a peak on the 25th day in the control. Exogenous application of IBA enhanced the endogenous IAA and GA3 levels compared to CK, while it reduced the levels of ABA continuously at the time of rooting and then increased gradually. Inclusively, our study suggests that IBA 750 mg/L is efficient for the rooting of Magnolia biondii Pamp cuttings, as it enhanced the process of antioxidant enzyme activities, endogenous hormones levels and reduced the time of root formation which is evident from the anatomical observations.

Magnolia biondii Pamp é uma importante espécie de árvore ornamental muito cultivada e utilizada como porta-enxerto na propagação de diferentes variedades de Magnolia. Nos estudos atuais, hormônios anatômicos, fisiológicos e endógenos foram estudados para verificar o efeito do AIB na dose de 750 mg / L no enraizamento adventício e fornecer suporte teórico e técnico para a propagação de M. biondii Pamp por meio de estacas. Duas mil estacas foram preparadas e divididas em dois grupos, ou seja, tratadas com AIB e controle de água. Para a avaliação das atividades das enzimas antioxidantes e dos níveis de hormônios endógenos, as amostras foram coletadas no dia do plantio e a cada 5 dias, enquanto as demais etapas foram realizadas em laboratório de acordo com os protocolos e os devidos cuidados. Para as observações anatômicas, as amostras foram coletadas no 13º, 15º e 17º dias para estacas tratadas com AIB e no 21º, 23º e 25º dias para o controle. As amostras coletadas foram preservadas em solução FAA, e outras observações foram realizadas em laboratório. Observações anatômicas mostraram a necessidade de 13 dias para a diferenciação dos primórdios radiculares até o aparecimento de raízes adventícias jovens em estacas tratadas com AIB e de 21 dias para o desenvolvimento dos primórdios no controle. As atividades das enzimas antioxidantes envolvidas nas ROS foram significativamente maiores nas estacas tratadas com AIB em comparação com o controle. A POD apresentou pico no 13º dia antes da emergência das raízes nas estacas tratadas com AIB, enquanto no 21º dia apresentou pico no controle. A PPO teve pico no 21º dia nas estacas tratadas com AIB e no 29º dia no controle. A SOD apresentou pico no 17º dia nas estacas tratadas com AIB e no 25º dia no controle. A aplicação exógena de AIB aumentou os níveis endógenos de IAA e GA3 em relação ao controle, enquanto reduziu os níveis de ABA continuamente no momento do enraizamento e, em seguida, aumentou gradativamente. Inclusive, nosso estudo sugere que o AIB na dose de 750 mg / L é eficiente para o enraizamento de estacas de M. biondii Pamp, visto que potencializou o processo de atividades de enzimas antioxidantes e os níveis de hormônios endógenos, além de reduzir o tempo de formação de raízes, o que fica evidente nas observações anatômicas.

Usos não contraceptivos dos fármacos anticoncepcionais orais hormonais: uma revisão / Non-contraceptive uses of hormonal oral contraceptive drugs: a review

Introdução: os anticoncepcionais orais hormonais são fármacos constituídos por hormônios, geralmente combinados, estrogênio e progestogênio, ou apenas progestogênio. Devido às propriedades características desses hormônios, são também responsáveis por diversos efeitos colaterais, o que tem levado a uma evolução contínua das formulações e tem-se observado vários benefícios não contraceptivos à saúde da mulher. Objetivo: o objetivo dessa revisão foi analisar os usos não contraceptivos dos anticoncepcionais orais hormonais, evidenciando sua eficácia e segurança. Metodologia: A pesquisa foi realizada em bases de dados eletrônicos e portais de busca, priorizando materiais publicados na faixa anual de 2008 a 2018, sendo encontrados 332 e utilizados 148 materiais de estudo. Resultados: esses fármacos tem sido uma alternativa eficaz de tratamento da síndrome do ovário policístico, uma vez que reduzem os androgênios circulantes e induzem a melhora dos sintomas como acne, irregularidade menstrual e dismenorreia. Estão associados ao tratamento da endometriose e à menor incidência de câncer de ovário. Neste último, exercem um efeito protetor durante anos, até mesmo após a interrupção. Conclusão: assim, os anticoncepcionais orais hormonais têm representado uma nova proposta terapêutica simples, segura e eficaz, para diversas utilidades não contraceptivas, e seus benefícios ultrapassam os riscos associados, proporcionando uma terapia adequada e individualizada para cada mulher.

Introduction: hormonal oral contraceptives are drugs consisted by hormones, usually combined, estrogen and progestogen, or just progestins. Due to the characteristic properties of these hormones, they are also responsible for several side effects, which has led to a continuous evolution of the formulations and various non-contraceptive benefits to women's health have been observed. Objective:the objective of this review was to analyze the non-contraceptive uses of hormonal oral contraceptives, showing their effectiveness and safety. Methodology: the research was conducted in electronic databases and search portals, prioritizing materials published in the annual range from 2008 to 2018, with 332 found and 148 study materials used. Results: these drugs have been an effective alternative for the treatment of polycystic ovary syndrome, since they reduce circulating androgens and induce improvement in symptoms such as acne, menstrual irregularity and dysmenorrhea. They are associated with the treatment of endometriosis and a lower incidence of ovarian cancer. In the latter, they have a protective effect for years, even after the interruption. Conclusion: thus, hormonal oral contraceptives have represented a new simple, safe and effective therapeutic proposal, for several non-contraceptive uses, and their benefits outweigh the associated risks, providing an adequate and individualized therapy for each woman

Síndrome de insensibilidad completa a andrógenos / Complete androgen insensitivity syndrome

El síndrome de insensibilidad a los andrógenos (SIA), conocido también como un síndrome de feminización testicular, incluye un grupo variado de mutaciones que se relacionan con la disfunción de los receptores de andrógenos y la resistencia de los tejidos diana a la acción de las hormonas masculinas. Es causado por alteraciones genéticas localizadas en la secuencia de codificación de los receptores de andrógenos ligada al cromosoma Xq11 - 12, el gen que codifica al receptor de los andrógenos, de un individuo genéticamente masculino (46 XY). Las formas clínicas moderada, parcial o completa, dependen del grado de insensibilidad androgénica. Los avances en las causas genéticas han permitido que estas condiciones congénitas de desarrollo del sexo cromosómico, gonadal o anatómico atípico sean denominados trastornos de diferenciación sexual

Androgen insensitivity syndrome (AIS), also known as testicular feminization syndrome, includes a diverse group of mutations that are related to androgen receptor dysfunction and resistance of target tissues to the action of hormones masculine. It is caused by localized genetic alterations in the androgen receptor coding sequence linked to chromosome Xq11-12, the gene encoding the androgen receptor, of a genetically male (46 XY) individual. Moderate, partial, or complete clinical forms depend on the degree of androgen insensitivity. Advances in genetic causes have allowed these congenital conditions of atypical chromosomal, gonadal, or anatomical sex development to be called disorders of sexual differentiation

Chinese expert consensus on multigene testing for postoperatively adjuvant treatment of hormone receptor-positive, HER2-negative early breast cancer / 中华肿瘤杂志

Breast cancer is the most common malignant tumor in women, of which early-stage (stages Ⅰ-Ⅱ) breast cancer (EBC) accounts for 73.1%. The strategy of postoperative adjuvant treatment relies mainly on the clinicopathologic characteristics of patients, but there are certain deficiencies in the assessment of treatment benefits and disease prognosis. Multigene testing tools can evaluate the prognosis and predict therapeutic effects of breast cancer patients to guide the clinical decision-making on whether to use adjuvant chemotherapy, radiotherapy, and endocrine therapy by detecting the expression levels of specific genes. The consensus-writing expert group, based on the characteristics, validation results, and accessibility of the multigene testing tools and combined with clinical practice, described the result interpretation and clinical application of OncotypeDx(®) (21-gene), MammaPrint(®) (70-gene), RecurIndex(®) (28-gene), and BreastCancerIndex(®) (BCI, 7-gene) for hormone receptor-positive and human epidermal growth factor receptor 2-negative EBC. The development and validation process of each tool was also briefly introduced. It is expected that the consensus will help to guide and standardize the clinical application of multigene testing tools and further improve the level of precise treatment for EBC.

A case of occupational allyl alcohol inhalation poisoning / 中华劳动卫生职业病杂志

Allyl alcohol is an intermediate widely used in industrial production activities, which has caused many occupational damage in China. In this paper, the data of a case of skin damage and clinical cure of inhalation pneumonia caused by occupational allyl alcohol exposure were analyzed and summarized. The patient accidentally inhaled large amounts of allyl alcohol at work and had skin exposure, which was mainly manifested as aspiration pneumonia, respiratory failure, eye damage and skin bullae. After short-term hormone shock therapy, mechanical ventilation, infection prevention, local treatment and other comprehensive treatment, the patient was clinically cured. This case suggests that chemical pneumonia and respiratory failure may be caused by inhalation of allyl alcohol, and skin bullae may be caused by skin contact. Early treatment and hormone use should be emphasized.

Toxicity mechanism of Rhododendri Mollis Flos: based on serum metabolomics and network toxicology / 中国中药杂志

This study aims to explore the toxicity mechanism of Rhododendri Mollis Flos(RMF) based on serum metabolomics and network toxicology. The toxic effect of RMF on normal rats was evaluated according to the symptoms, serum biochemical indexes, and histopathology. Serum metabolomics was combined with multivariate statistical analysis to search endogenous differential metabolites and related metabolic pathways. The toxic components, targets, and signaling pathways of RMF were screened by network toxicology technique, and the component-target-metabolite-metabolic pathway network was established with the help of serum metabolomics. The result suggested the neurotoxicity, hepatotoxicity, and cardiotoxicity of RMF. A total of 31 differential metabolites and 10 main metabolic pathways were identified by serum metabolomics, and 11 toxic components, 332 related target genes and 141 main signaling pathways were screened out by network toxicology. Further analysis yielded 7 key toxic components: grayanotoxin Ⅲ,grayanotoxinⅠ, rhodojaponin Ⅱ, rhodojaponin Ⅴ, rhodojaponin Ⅵ, rhodojaponin Ⅶ, and kalmanol, which acted on the following 12 key targets: androgen receptor(AR), albumin(ALB), estrogen receptor β(ESR2), sex-hormone binding globulin(SHBG), type 11 hydroxysteroid(17-beta) dehydrogenase(HSD17 B11), estrogen receptor α(ESR1), retinoic X receptor-gamma(RXRG), lactate dehydrogenase type C(LDHC), Aldo-keto reductase(AKR) 1 C family member 3(AKR1 C3), ATP binding cassette subfamily B member 1(ABCB1), UDP-glucuronosyltransferase 2 B7(UGT2 B7), and glutamate-ammonia ligase(GLUL). These targets interfered with the metabolism of gamma-aminobutyric acid, estriol, testosterone, retinoic acid, 2-oxobutyric acid, and affected 4 key metabolic pathways of alanine, aspartate and glutamate metabolism, cysteine and methionine metabolism, steroid hormone biosynthesis, and retinol metabolism. RMF exerts toxic effect on multiple systems through multiple components, targets, and pathways. Through the analysis of key toxic components, target genes, metabolites, and metabolic pathways, this study unveiled the mechanism of potential neurotoxicity, cardiotoxicity, and hepatotoxicity of RMF, which is expected to provide a clue for the basic research on toxic Chinese medicinals.

Contributions of flavonoids from citri reticulatae pericarpium to gastric hormones, CD3~+ and TFF3 mRNA expression in rats with spleen deficiency intervened by Liujunzi Decoction / 中国中药杂志

The present study established the spectrum-effect relationship model of flavonoids in Citri Reticulatae Pericarpium(CRP) from 15 batches of Liujunzi Decoction and statistically analyzed the correlation between chemical peaks and efficacy to identify the main effective components. HPLC fingerprints of flavonoids in CRP from 15 batches of Liujunzi Decoction were established. HPLC analysis was carried out on the Venusil XBP C_(18)(L) column(4.6 mm×250 mm, 5 μm) at 30 ℃ with acetonitrile-water(containing 0.1% formic acid) as mobile phase for gradient elution, a flow rate of 1.0 mL·min~(-1), and detection wavelength of 300 nm to obtain chemical fingerprints. Additionally, the effects of flavonoids from CRP in 15 batches of Liujunzi Decoction on the content of GAS, MTL, and VIP, TFF3 mRNA expression, and percentage of CD3~+ T-cells of model rats with spleen deficiency were determined. The spectrum-effect relationship model was established by gray correlation analysis. The results showed that the main characteristic peaks with great contribution to the regulation of gastrointestinal tract were peak 16(vicenin-2), peak 63(sinensetin), peak 64(isosinensetin), peak 65(nobiletin), peak 67(3,5,6,7,8,3',4'-heptemthoxyflavone), peak 68(tangeretin), and peak 69(5-desmethylnobiletin). Therefore, there was a linear correlation between flavonoids from CRP in Liujunzi Decoction and the efficacy, and the medicinal effect was achieved by multi-component action. This study is expected to provide a new idea for exploring the material basis of the effect, i.e., regulating qi prior to replenishing qi, of CRP in Liujunzi Decoction.

Uso de hormônios não prescritos na modificação corporal de travestis e mulheres transexuais de Salvador/Bahia, Brasil / Use of unprescribed hormones in the body modification of travestis and transsexual women in Salvador/Bahia, Brazil

Resumo O objetivo deste artigo é analisar o uso de hormônios não prescritos entre travestis e mulheres transexuais (TrMT) na cidade de Salvador, Bahia, Brasil. Trata-se de um estudo de corte transversal onde se utilizou a metodologia RDS (respondent driven sampling) para recrutar TrMT entre 2014 e 2016, em Salvador e sua Região Metropolitana. Foi realizada uma análise comparativa entre condições sociodemográficas, comportamentais e de afirmação de gênero com o uso de hormônios. Os dados ponderados pelo estimador RDS-II. Utilizou-se o programa Stata, versão 14, para análises estatísticas. Foram recrutadas 127 TrMT. Da amostra estudada, 69,1% das participantes fizeram uso de hormônios não prescritos, o que esteve associado ao uso de silicone líquido industrial e ao relato de satisfação corporal. As TrMT que estavam confortáveis com o pênis e que sentiam prazer com o mesmo apresentaram menor probabilidade de uso de hormônio. As participantes soropositivas para HIV reportaram maior proporção de uso de hormônio. O uso não prescrito de hormônios foi utilizado pela maioria das TrMT. É provável que esse uso esteja associado a uma melhor satisfação com a autoimagem e com o corpo entre as TrMT. Verificou-se o uso em elevadas quantidades desses medicamentos e de maneira exacerbada, provavelmente devido ao pouco acesso aos serviços de saúde pública.

Abstract This article aims to analyze the use of non-prescribed hormones among travestis and transgender women (TrTGW) in Salvador, Bahia, Brazil. This cross-sectional study used the Respondent Driven Sampling (RDS) methodology to recruit TrTGW from 2014 to 2016 in Salvador and the Metropolitan Region. A comparative analysis was carried out between sociodemographic, behavioral, and gender declaration conditions using hormones. The RDS-II estimator weighted the data. Stata version 14 was used for statistical analyses. One hundred twenty-seven TrTGW were recruited. From the studied sample, 69.1% of participants used non-prescribed hormones, which was associated with industrial liquid silicone use and body satisfaction. The TrTGW who were comfortable with the penis and felt pleasure with the penis used hormone less. The seropositive participants reported a higher proportion of hormone use. The non-prescribed use of hormones was used by most TrTGW. This use is likely associated with better satisfaction with self-image and body among TrTGW. Elevated and exacerbated use of these hormones was identified, probably due to the rare access to public health services.

Menstrual hygiene management in public high schools in Ghana

in the ten (10) regions of Ghana. The findings showed that most girls in Public Senior High Schools in Ghana had prior knowledge about menstruation from their mothers and sisters prior to menarche. It was revealed that majority of the girls mentioned hormones as the cause of menstruation, whilst others mentioned the uterus, bladder, vagina, and other parts of the female reproductive system. A few of them had no idea what causes menstruation. The findings again revealed that most girls use sanitary pads, while some use other materials during menstruation. Less than half of the sample of girls in this study were able to change their pads twice daily or more. About half of the girls cleansed their genital parts only when bathing during menstruation using soup and water mostly. Half of the schools used public tap/standpipe as their main source of water and the rest used other sources of water. Also, most schools have toilet facilities. Some useful recommendations are proffered with the aim of improving MHM in public high schools in Ghana

Descrição de medicamentos prescritos para a terapia hormonal em serviços de saúde especializados para transexuais e travestis no Rio Grande do Sul, 2020 / Descripción de medicamentos recetados para terapia hormonal en servicios de salud especializados para transexuales y travestis en Rio Grande do Sul, Brasil, 2020 / Description of drugs prescribed for hormone therapy in specialized health services for transsexual and transvestite persons in Rio Grande do Sul, Brazil, 2020

Objetivo: Descrever os medicamentos prescritos para o tratamento hormonal do processo transexualizador em estabelecimentos de saúde de atendimento especializado para pessoas transexuais e travestis no Rio Grande do Sul, Brasil. Métodos: Estudo descritivo, com coleta de dados nesses estabelecimentos, no período maio-setembro/2020, utilizando-se instrumento elaborado pelos(as) pesquisadores(as). Obtiveram-se dados sobre o perfil de usuários(as) e características do cuidado farmacológico de tratamento hormonal. Resultados: A pesquisa contemplou todos os sete serviços do estado. Para mulheres transexuais e travestis, medicamentos antiandrogênicos e espironolactona foram prescritos em todos os serviços. Apenas um estabelecimento não prescreveu ciproterona. Todos os estabelecimentos de saúde realizaram prescrição de medicamentos a base de estrógenos, com diferenças na via de administração; para homens transexuais, todos prescreveram andrógenos por via intramuscular. Conclusão: A pesquisa aponta os medicamentos prescritos e sua diversidade, ratificando a necessidade da produção de informação para implementação das políticas de equidade no Sistema Único de Saúde.

Objetivo: Describir los medicamentos prescritos para el tratamiento hormonal en establecimientos de salud que brindan atención especializada a transexuales y travestis en Rio Grande do Sul, Brasil. Métodos: Estudio descriptivo, con recolección de datos en los establecimientos, entre mayo y septiembre de 2020, utilizando el instrumento desarrollado por los investigadores. Se obtuvieron datos sobre el perfil de usuarios (as) y características del cuidado farmacológico de tratamiento hormonal. Resultados: La encuesta abarcó los siete servicios estatales. Para las mujeres transgénero y travestis se prescribieron antiandrógenos y espironolactona en todos los servicios. Sólo un establecimiento no prescribió ciproterona. Todos los establecimientos de salud prescribieron medicamentos a base de estrógenos con diferencias en la vía de administración. Para los hombres transgénero, todos los andrógenos se recetan por vía intramuscular. Conclusión: La investigación destaca la diversidad de medicamentos prescritos, ratificando la necesidad de producir información para la implementación de políticas de equidad en el Sistema de Salud Brasileño.

Objective: To describe the drugs prescribed for hormone treatment as part of the transsexualization process in health facilities providing specialized care for transsexual and transvestite persons in the state of Rio Grande do Sul, Brazil. Methods: This was a descriptive study based on data collected in health facilities between May and September 2020 using the instrument developed by the researchers. Results: The survey covered all seven services in the state. Antiandrogen drugs and spironolactone were prescribed for transsexuals and transvestites women in all services. Only one service did not prescribe cyproterone. All health facilities prescribed estrogen-based drugs, although with differences in the route of administration. In the case of transsexuals men, all services prescribed androgens to be administered via the intramuscular route. Conclusion: The study indicates which drugs are prescribed and their diversity, ratifying the need to produce information for the implementation of equity policies in the Brazilian National Health System.

Analysis of the Role of Female Hormones During Infection by COVID-19 / Análise do papel dos hormônios femininos durante a infecção por COVID-19

Abstract Women have metabolic, immunological, and genetic variables that ensure more protection from coronavirus infection. However, the indication of treatment for several pathologies and contraception is determined by hormones that have adverse effects and raise doubts about their use during the COVID-19 pandemic. Therefore, the present study searches women specificities and the relation between female sexual hormones and COVID-19, and reports the main recommendations in this background. To this end, a review of the literature was conducted in the main databases, auxiliary data sources, and official websites. Therefore, considering the hypercoagulability status of COVID-19, the debate about the use of contraceptives due to the relative risk of thromboembolic effects that they impose arises. However, the current available evidence, as well as the recommendations of main health organs around the world, demonstrate that the use of hormonal contraceptives must be maintained during the pandemic.

Resumo As mulheres possuem variáveis metabólicas, imunológicas e genéticas que conferem maior proteção à infecção pelo coronavírus. Todavia, a indicação de tratamento para certas patologias e para a contracepção é determinada por hormônios que possuem efeitos adversos e levantam dúvidas quanto ao seu uso durante a pandemia da COVID-19. Desta forma, o presente estudo busca investigar as especificidades da mulher e a relação dos hormônios sexuais femininos com a COVID-19, assim como relatar as principais recomendações neste contexto. Para isso, realizou-se uma revisão da literatura nas principais bases de dados, fontes auxiliares de dados e sites oficiais. Portanto, considerando o estado hipercoagulável da COVID-19, surge o debate quanto à utilização de contraceptivos pelo seu risco relativo de efeitos tromboembólicos. No entanto, as atuais evidências disponíveis, assim como as recomendações dos principais órgãos de saúde do mundo, demonstraram que o uso de contraceptivos hormonais deve ser mantido durante a pandemia.

Evaluation of Hormonal Influence in Patients with Fractures Attributed to Osteoporosis / Avaliação da influência hormonal em pacientes com fraturas atribuídas a osteoporose

Abstract Objective The present study aims to evaluate the influence of hormonal levels of vitamin D, calcitonin, testosterone, estradiol, and parathyroid in patients with fractures attributed to osteoporosis when compared with young patients with fractures resulting from high-impact accidents. Methods Blood samples were collected from 30 elderly patients with osteoporosisattributed fractures (T-score ≤-2.5) (osteoporotic group), and from 30 young patients with fractures resulting from high-impact accidents (control group). Measurement of 1,25-hydroxyvitamin D (Kit Diasorin, Saluggia, Italy), calcitonin (Kit Siemens, Tarrytown, NY, USA), testosterone, estradiol, and parathyroid hormone (Kit Beckman Couter, Indianapolis, IN, United States) was performed using a chemiluminescence technique. Data were inserted into a Microsoft Excel (Microsoft Corp., Armonk, WA, USA) spreadsheet and analyzed using Statview statistical software. Results showing non-normal distribution were analyzed with nonparametric methods. The Mann-Whitney test was applied for group comparison, and a Spearman test correlated hormonal levels. Statistical significance was set at p < 0.05. All analyzes compared gender and subjects with and without osteoporosis. Results Women with osteoporosis had significantly lower levels of estradiol and vitamin D (p = 0.047 and p = 0.0275, respectively). Men with osteoporosis presented significantly higher levels of parathyroid hormone (p = 0.0065). There was no significant difference in testosterone and calcitonin levels. Conclusion Osteoporosis patients presented gender-related hormonal differences. Women had significantly lower levels of estradiol and vitamin D, whereas men had significantly higher parathyroid hormone levels, apparently impacting the disease.

Resumo Objetivo Avaliar a influência dos níveis hormonais de vitamina D, calcitonina, testosterona, estradiol e paratormônio em pacientes com fratura atribuída a osteoporose, quando comparados com pacientes jovens que tiveram fraturas decorrentes de acidente de alto impacto. Métodos Foram coletadas amostras de sangue de 30 pacientes idosos com fratura atribuída a osteoporose (T-score ≤-2,5) (grupo com osteoporose) e 30 amostras de sangue de pacientes jovens que sofreram fraturas decorrentes de acidentes de alto impacto (grupo controle). Foram realizadas dosagem de 1,25-hidroxivitamina D (Kit Diasorin, Saluggia, Italy), calcitonina (Kit Siemens, Tarrytown, NY, USA), testosterona, estradiol e paratormônio (Kit Beckman Couter, Indianapolis, IN, United States) pela técnica de quimiluminescência. Os dados foram inseridos em uma planilha de dados no programa Microsoft Excel (Microsoft Corp., Redmond, WA, EUA) e analisados pelo programa de estatística Statview. Os resultados que apresentaram distribuição não normal foram analisados com métodos não paramétricos. Para análise de variáveis comparando-se os dois grupos, aplicou-se o teste Mann-Whitney. Foi utilizado o teste de correlação de Spearman para a correlacionar os níveis hormonais. Um valor-p >0.05 foi considerado significante. Todas as análises foram feitas comparando gênero e grupos de pacientes come sem osteoporose. Resultados Mulheres com osteoporose apresentam níveis significativamente menores de estradiol e vitamina D (p = 0.047 e p = 0.0275), respectivamente. Homens com osteoporose demonstraram níveis significativamente maiores de paratormônio (p = 0.0065). Não houve diferença significativa nos níveis de testosterona e calcitonina. Conclusão Existem diferenças hormonais entre os gêneros na osteoporose. Em mulheres, níveis significativamente menores de estradiol e vitamina D e, nos homens, níveis significativamente maiores de paratormônio, parecem influenciar na doença.

Biochemical and hormonal parameters of goats kept in a controlled environment consuming water with different levels of salinity / [Parâmetros bioquímicos e hormonais de caprinos consumindo água com diferentes níveis de salinidade mantidos em ambiente controlado]

The objective of this work was to evaluate the biochemical and hormonal variables of Moxotó and Canindé goats submitted to two temperatures - 26.0±0.6 (thermoneutral) and 32.0±1.2°C (above thermal comfort zone) - and consuming water with three levels of salinity (1.0, 6.0 and 12.0 dSm-1). Thirty-six animals (18 of each breed) were used, with an average age of 5.0±0.6months and an average weight of 20.0±2.3kg, housed in metabolic cages inside a climate chamber. The animals were distributed in a completely randomized design with a 2 × 2 × 3 factorial scheme (2 breeds, 2 temperatures and 3 levels of salinity) and three replications. The glucose and urea had a significant effect (P>0.05) according to water salinity. Glucose, cholesterol, protein, albumin, globulin, aspartate aminotransferase and hormones (T4, T3 and cortisol) varied according to temperature (P<0.05). There was a significant effect of time on hormonal variables (P<0.05). Biochemical and hormonal variables changed according to temperature and day shift, so that metabolism was reduced in the animals under thermal stress and accelerated when animals were in the thermal comfort zone.(AU)

O objetivo do trabalho foi avaliar as variáveis bioquímicas e hormonais de caprinos das raças Moxotó e Canindé, submetidos a duas temperaturas (26,0±0,6ºC e 32,0±1,2ºC), termoneutra e acima da zona de conforto térmico, respectivamente), consumindo água com três níveis de salinidade (1,0, 6,0 e 12,0dSm-1), utilizando-se 36 animais (18 de cada raça), com idade média de 5,0±0,6 meses e peso médio de 20,0±2,3kg, alojados em gaiolas metabólicas no interior de uma câmara climática. Os animais foram distribuídos em um delineamento inteiramente ao acaso, com esquema fatorial de 2 x 2 x 3 (2 raças, 2 temperaturas e 3 níveis de salinidade) e três repetições. A glicose e a ureia apresentaram efeito significativo (P<0,05) em função da salinidade da água. Glicose, colesterol, proteína, albumina, globulina, AST e hormônios (T4, T3 e cortisol) variaram conforme as temperaturas (P<0,05). Observou-se efeito significativo do horário sobre as variáveis hormonais (P<0,05). As variáveis bioquímicas e hormonais sofrem alterações em função da temperatura e do turno do dia, de modo que o metabolismo é reduzido em animais sob estresse térmico e acelerado quando os animais encontram-se na zona de conforto térmico.(AU)

Enfermedad de addison e insuficiencia adrenal aguda: presentación de un caso y revisión de la literatura / Addison disease and acute adrenal insufficiency: case report and literature review

La enfermedad de Addison es una patología endocrinológica ocasionada por la disminución en la secreción de hormonas esteroideas por parte de la corteza adrenal; debida a múltiples etiologías (más comúnmente la tuberculosis en países en vías de desarrollo); con una evolución lenta, insidiosa y progresiva. Pudiendo llegar a una insuficiencia adrenal aguda, misma que puede llegar a ser de extrema gravedad; y en caso de no ser diagnosticada y tratada adecuadamente puede llevar a la muerte. El tratamiento primordial lo constituye la terapia hormonal sustitutiva con fármacos corticoesteroideos.

Addison's disease is an endocrinological pathology caused by the decrease in the secretion of steroid hormones by the adrenal cortex, due to multiple etiologies (most commonly tuberculosis in developing countries); with a slow, insidious and progressive evolution. Being able to reach an acute adrenal insufficiency, which can become extremely serious, and if it is not diagnosed and treated properly, it can lead to death. The primary treatment is hormone replacement therapy with corticosteroid drugs

Limitations and advances in new treatments and future perspectives of corneal blindness / Limitações e avanços em novos tratamentos e perspectivas futuras na cegueira corneal

ABSTRACT This review is intended to describe the therapeutic approaches for corneal blindness, detailing the steps and elements involved in corneal wound healing. It also presents the limitations of the actual surgical and pharmacological strategies used to restore and maintain corneal transparency in terms of long-term survival and geographic coverage. In addition, we critically review the perspectives of anabolic agents, including vitamin A, hormones, growth factors, and novel promitotic and anti-inflammatory modulators, to assist corneal wound healing. We discuss the studies involving nanotechnology, gene therapy, and tissue reengineering as potential future strategies to work solely or in combination with corneal surgery to prevent or revert corneal blindness.(AU)

RESUMO O presente trabalho traz uma revisão das abordagens terapêuticas para a cegueira da córnea. O estudo detalha as etapas e os elementos envolvidos na cicatrização da córnea. Ele mostra as limitações das estratégias cirúrgicas e farmacológicas usadas para restaurar e manter a transparência da córnea em termos de sobrevida a longo prazo e alcance geográfico. As perspectivas dos agentes anabólicos, incluindo vitamina A, hormônios, fatores de crescimento e novos moduladores pró-mitóticos e anti-inflamatórios para auxiliar a cicatrização da ferida na córnea, são revisadas criticamente. Aqui, apresentamos estudos envolvendo nanotecnologia, terapia gênica e reengenharia de tecidos como possíveis estratégias futuras para atuar de maneira isolada ou combinada com a cirurgia da córnea para prevenir ou reverter a cegueira corneana.(AU)

Phase II trial of humanized anti-Lewis Y monoclonal antibody for advanced hormone receptor-positive breast cancer that progressed following endocrine therapy

OBJECTIVES: The Lewis-Y antigen is expressed in 44%-90% of breast cancers (BCs). The expression of the antigen in carcinoma tissue differs from that in normal tissues. This study aimed to evaluate the clinical benefit of the humanized anti-Lewis Y monoclonal antibody, hu3S193, in advanced hormone receptor-positive and Lewis Y-positive BC after administration of endocrine therapy (ET). METHODS: A single-arm phase II study was conducted in seven centers. Patients with advanced hormone receptor-positive BC who failed first-line ET were included. The inclusion criterion was the observation of tumoral expression of the Lewis Y antigen during immunohistochemistry. The treatment comprised hu3S193 antibody administration at weekly intravenous doses of 20 mg/m2 for 8-week cycles. The primary endpoint was the clinical benefit rate. ClinicalTrials.gov NCT01370239. RESULTS: The study stopped accrual following an unplanned interim analysis as the hu3S193 antibody lacked sufficient activity to justify continuation of the study. Twenty-two patients were enrolled, of whom 21 were included in the efficacy analysis. The clinical benefit rate was 19%, with four patients presenting with stable disease after 24 weeks. One patient with prolonged stable disease received medication for over 2 years. No partial or complete responses were observed. The median time to progression and overall survival was 5.4 and 37.5 months, respectively. CONCLUSIONS: The humanized anti-Lewis Y monoclonal antibody, hu3S193, exhibited insufficient activity in this cohort. However, the possibility of activity in a more strictly selected subgroup of patients with higher levels of Lewis Y tumoral expression cannot be overlooked.

Hormônios e mulheres na menopausa / Hormones and women in menopause / Hormonas y mujeres en la menopausia

O término do ciclo fértil das mulheres está historicamente atrelado a sua capacidade reprodutiva, demarcando de maneira significativa o início do processo de envelhecimento. O climatério, momento de transição entre o período fértil e a menopausa (que é a última menstruação), é percebido em nossa sociedade como uma questão médica. O objetivo deste artigo é analisar como os hormônios, considerados produtos atuantes em dinâmicas humanas, agenciam modos de subjetivação entre mulheres que passam pela menopausa na nossa sociedade, que valoriza a produtividade e a juventude. Nesta pesquisa, inspirada na cartografia de controvérsias proposto por Bruno Latour, foram analisados sete vídeos disponibilizados no Youtube pela indústria farmacêutica Bayer que abordavam direta ou indiretamente a "reposição hormonal" para mulheres. Identificamos que as mudanças hormonais na velhice são compreendidas como um desequilíbrio, causador de calores, problemas de libido, osteoporose, problemas cardíacos, secura vaginal etc. Tais percepções levam à busca por soluções médicas, como a reposição hormonal, para que o corpo alcance novamente o equilíbrio perdido com o envelhecimento. Concluímos que os hormônios são prescritos pelos médicos com a promessa de as mulheres se manterem jovens e sexualmente atraentes para seus parceiros do sexo masculino dentro de uma perspectiva que reitera o machismo e a heteronormatividade na sociedade.(AU)

Historically, the end of women' fertile years is intrinsically associated with their reproductive capacity, marking the beginning of their aging process. In our society, the climacteric (transition period between fertility and menopause, consisting of the last menstruation) is perceived as a medical question. Thus, this article aimed to discuss how hormones, considered as active products in human dynamics, act as subjectivation modes among women who undergo menopause in a society such as ours, which values youth and productivity. Inspired by Bruno Latour's cartography of controversies, this research analyzed seven videos made available by the Bayer pharmaceutical company on YouTube, approaching "hormone replacement" for women either directly or indirectly. The results indicate that age-related hormonal changes are understood as an imbalance that triggers hot flashes, decreased libido, osteoporosis, heart diseases, and vaginal dryness. Such understanding drives the search for medical interventions aiming to regain the body balance lost with aging. Thus, doctors prescribe hormones under the guise of keeping women young and sexually attractive to their male partners, reiterating a logic of machismo and heteronormativity within our society.(AU)

El final del ciclo fértil femenino históricamente relacionado a la capacidad reproductiva marca de manera significativa el inicio del proceso de envejecimiento de las mujeres. El climatérico, momento de transición entre el período fértil a la menopausia caracterizado por la última menstruación, es percibido por nuestra sociedad como una cuestión médica. El objetivo de este artículo es analizar cómo las hormonas, consideradas como productos activos en la dinámica humana, actúan en los modos de subjetivación entre las mujeres, que atraviesan la menopausia, en una sociedad que valora la productividad y la juventud. En esta investigación, inspirada en la cartografía de controversias propuesta por Bruno Latour, se analizaron siete vídeos disponibles en YouTube por la industria farmacéutica de Bayer, los cuales plantean directa o indirectamente la terapia de "reemplazo hormonal" para las mujeres. Se identificó que los cambios hormonales en las personas mayores se entienden como un desequilibrio que provocaría calores, problemas en la libido, osteoporosis, problemas cardíacos, sequedad vaginal, etc. Tales hallazgos implican en la búsqueda de orientación médica para que el cuerpo alcance de nuevo el equilibrio perdido con el envejecimiento. Se concluye que las hormonas son prescriptas por médicos con la promesa de que las mujeres seguirán siendo jóvenes y sexualmente atractivas para su pareja masculina, dentro de una perspectiva que reitera el machismo y la heteronormatividad de nuestra sociedad.(AU)

Overcoming resistance to endocrine therapy in hormone receptor-positive human epidermal growth factor receptor 2-negative (HR / 医学前沿

New targeted therapies have been developed to overcome resistance to endocrine therapy (ET) and improve the outcome of HR