Alcoholism and coagulating gland: Androgen and insulin like growth factor-1 receptor features

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Alcoholism and alcohol abstinence: N-acetylcysteine to improve energy expenditure, myocardial oxidative stress, and energy metabolism in alcoholic heart disease

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Influence of chronic alcoholism and oestrogen deficiency on the variation of stoichiometry of hydroxyapatite within alveolar bone crest of rats

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Experimental alcoholism and pathogenesis of prostatic diseases in UChB rats

Previous studies have shown that long-term alcohol treatment has negative effects on prostatic stromal-epithelial interaction. Thus, the aim of the present study was to analyze the histochemical, immunohistochemical and ultrastructural alterations that occur in the prostatic stroma and epithelium of rats submitted to chronic alcohol ingestion and alcohol abstinence, as well as to establish the relationship between these changes and prostatic diseases. Thirty male rats (10 Wistar and 20 UChB rats) were divided into three experimental groups: the control group received tap water, the alcoholic group received ethanol diluted to 10 degrees G.L. for 150 days, and the abstinent group received the same liquid diet as the alcoholic group up to 120 days of treatment and only tap water for 30 days thereafter. At the end of treatment, all animals were sacrificed and the ventral lobe of the prostate was removed and processed for histochemical, immunohistochemical and ultrastructural analyses. In addition, plasma testosterone levels were measured. The results showed, prostatic intraepithelial neoplasia, infolding of the epithelium towards the stroma, stromal hypertrophy and the presence of inflammatory cells in alcoholic animals. In the abstinent group, alterations were noted mainly in the stromal area. In conclusion, ethanol triggers alterations in prostatic epithelial and stromal compartments, affecting the stromal microenvironment and predisposing the organ to pathological processes. (C) 2006 International Federation for Cell Biology. Published by Elsevier Ltd. All rights reserved.

Chronic Ethanol Consumption Alters All-Trans-Retinoic Acid Concentration and Expression of Their Receptors on the Prostate: A Possible Link Between Alcoholism and Prostate Damage

Background: Ethanol (EtOH) alters the all-trans-retinoic acid (ATRA) levels in some tissues. Retinol and ATRA are essential for cell proliferation, differentiation, and maintenance of prostate homeostasis. It has been suggested that disturbances in retinol/ATRA concentration as well as in the expression of retinoic acid receptors (RARs) contribute to benign prostate hyperplasia and prostate cancer. This study aimed to evaluate whether EtOH consumption is able to alter retinol and ATRA levels in the plasma and prostate tissue as well as the expression of RARs, cell proliferation, and apoptosis index. Methods: All animals were divided into 4 groups (n = 10/group). UChA: rats fed 10% (v/v) EtOH ad libitum; UChACo: EtOH-naïve rats without access to EtOH; UChB: rats fed 10% (v/v) EtOH ad libitum; UChBCo: EtOH-naïve rats without access to EtOH. Animals were euthanized by decapitation after 60 days of EtOH consumption for high-performance liquid chromatography and light microscopy analysis. Results: EtOH reduced plasma retinol concentration in both UChA and UChB groups, while the retinol concentration was not significantly different in prostate tissue. Conversely, plasma and prostate ATRA levels increased in UChB group compared with controls, beyond the up-regulation of RARβ and -γ in dorsal prostate lobe. Additionally, no alteration was found in cell proliferation and apoptosis index involving dorsal and lateral prostate lobe. Conclusions: We conclude that EtOH alters the plasma retinol concentrations proportionally to the amount of EtOH consumed. Moreover, high EtOH consumption increases the concentration of ATRA in plasma/prostate tissue and especially induces the RARβ and RARγ in the dorsal prostate lobe. EtOH consumption and increased ATRA levels were not associated with cell proliferation and apoptosis in the prostate. © 2012 by the Research Society on Alcoholism.

Long-Term Exogenous Melatonin Treatment Modulates Overall Feed Efficiency and Protects Ovarian Tissue Against Injuries Caused by Ethanol-Induced Oxidative Stress in Adult UChB Rats

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Effects of N-acetylcysteine on alcohol abstinence and alcohol-induced adverse effects in rats

Alcoholism is rampant in modern society and some antioxidant compound could perhaps be useful to reduce the damage done by alcohol consumption and abstinence. The present study was undertaken to investigate the association of N-acetylcysteine (NAC) intake, alcoholism, and alcohol abstinence on lipid profile, in vivo low-density lipoprotein (LDL) oxidation, oxidative stress, and antioxidant status in serum and liver of rats. Initially, male Wistar 30 rats were divided into two groups: (C, N = 6) given standard chow and water; (E, N = 24) receiving standard chow and aqueous ethanol solution in semi-voluntary research. After 30 days of ethanol exposure, (E) group was divided into four subgroups (N = 6/group): (E-E) continued drinking 30% ethanol solution; (E-NAC) drinking ethanol solution containing 2 g/L NAC (AB) changed ethanol solution to water; (AB-NAC) changed ethanol to aqueous solution 2 g/L NAC. After 15 days of the E-group division, E-E rats had higher serum alanine transaminase, lower body weight, and surface area, despite higher energy intake than C. E-E rats had also lower feed efficiency, dyslipidemia with enhanced triacyl glycerol, very low-density lipoprotein (VLDL), lipid hydroperoxide (LH) and in vivo oxidized-LDL (ox-LDL). AB, E-NAC, and AB-NAC rats ameliorated serum oxidative stress markers and normalized serum lipids. E-E rats had higher hepatic LH and lower reduced glutathione (GSH)/oxidized glutathione (GSSG) ratio than C, indicating hepatic oxidative stress. AB and E-NAC rats normalized hepatic LH, GSSG, and the GSH/GSSG ratio, compared to E-E. AB-NAC rats had the lowest serum ox-LDL, hepatic LH levels, and the highest GSH reductase activity in hepatic tissue. In conclusion, the present study brought new insights into alcohol consumption, because ethanol exposure enhanced serum in vivo ox-LDL, as well as serum and hepatic oxidative stress. N-acetylcysteine offers promising therapeutic value to inhibit ethanol-induced adverse effects. Ethanol withdrawal had beneficial effects on serum lipids, but was more effective when coupled with NAC supplementation. Ethanol abstinence and NAC intake interact synergistically, improving serum lipids and hepatic antioxidant defenses. (c) 2009 Elsevier B.V. All rights reserved.

Alcoholic and isocaloric diet, but not ovariectomy, influence the apoptosis of bone cells within the alveolar bone crest of rats

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Rutin ameliorates glycemic index, lipid profile and enzymatic activities in serum, heart and liver tissues of rats fed with a combination of hypercaloric diet and chronic ethanol consumption

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Câncer do esôfago em paciente com megaesôfago chagásico

RACIONAL: O megaesôfago constitui problema de saúde pública em nosso país, pois acomete indivíduos em sua fase de maior produtividade. Os doentes com essa afecção podem apresentar em sua evolução associação com câncer do esôfago. OBJETIVO: Analisar os aspectos clínicos e epidemiológicos de pacientes com megaesôfago e câncer do esôfago. MÉTODOS: Foram avaliados de maneira retrospectiva 20 pacientes com megaesôfago e câncer (grupo 1) e 20 com câncer do esôfago (grupo 2). Estudaram-se os dados demográficos, hábitos (etilismo e tabagismo), tipo histológico do tumor, localização da lesão, diferenciação celular, estádio, tratamento e sobrevida. RESULTADOS: Não foi observada diferença entre os grupos, com relação à idade, sexo, localização da lesão, tipo histológico do tumor, diferenciação celular, estádio e sobrevida. Com relação aos hábitos de vida, a associação de etilismo e tabagismo foi observada em maior número de pacientes com câncer do esôfago sem o antecedente de megaesôfago. CONCLUSÃO: As características clínicas dos pacientes com megaesôfago e câncer não diferem daqueles com neoplasia maligna esofágica não associada ao megaesôfago, principalmente no que se refere ao prognóstico desfavorável frente ao tratamento instituído. Nos pacientes com megaesôfago o tumor pode se localizar em qualquer porção do órgão.

Efeitos da separação materna e do alcoolismo sobre a vesícula seminal e a galândula de coagulação de ratos UCh (bebedores voluntários de etanol a 10%)

Pós-graduação em Biologia Geral e Aplicada - IBB

A atuação de agentes públicos junto a meninas vítimas de abuso e exploração sexual em Ribeirão Preto

Pós-graduação em Ciências Sociais - FCLAR

A atualidade da criminalização produzida sobre o Movimento dos Trabalhadores Sem Teto – MTST: o caso do acampamento Chico Mendes

Pós-graduação em Ciências Sociais - FFC

Ensino e aprendizagem de estatística por meio da modelagem matemática: uma investigação com o ensino médio

Pós-graduação em Educação Matemática - IGCE

Divinas comédias contemporâneas: duas releituras brasileiras do clássico Dantesco

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)