[Effect of tamoxifen in lipids of diabetic rats induced by streptozotocin]. / Efeito do tamoxifeno no perfil lipídico de ratos diabéticos por estreptozotocina.

OBJECTIVE: To evaluate the effect of tamoxifen in the lipidic and renal profile in diabetic and control rats. METHODS: 40 female Wistar rats had been used (180-220g corporal weight), divided randomly in 4 groups: C (n = 10, received vehicle), T (n = 10, treated with tamoxifen, 0.3mg/kg/day), D (n = 10, diabetic induced by streptozotocin, 45mg/Kg) and DT (n = 10, diabetic treated with tamoxifen). Glucose, total cholesterol, triglyceride, total proteins, albumin, urea and creatinin were analyzed using Labtest Kits through the Cobas Mira analyzer (Germany, 1996). RESULTS: Group T presented a reduction of total cholesterol and triglyceride in relation to C, and group D an increase in relation to the other ones. About the total proteins it was observed an increasing in Group T in relation to C. The albumin diminished in groups D and DT in relation to C and T. The urea levels increased in groups D and DT in relation to C and T. CONCLUSION: In relation to the lipidic profile it was evidenced that during the period of 60 days the treatment with tamoxifen promoted a reduction in cholesterol and triglyceride levels in the serum, even associated to the condition of Diabetes mellitus.

[Effect of tamoxifen on plasma proteins in diabetes mellitus type 1]. / Efeito do tamoxifeno no perfil das proteínas plasmáticas em condição de diabetes mellitus tipo 1.

PURPOSE: Considering that important scientific advances have been obtained through studies based on experimental Diabetes mellitus, and that tamoxifen action in humans remains unknown, the aim of the present work is to follow the modifications promoted by diabetes and tamoxifen in the electrophoretic profile of plasmatic proteins. METHODS: It was used 27 Wistar female rats (180-250 body weight), randomicaly divided into five groups: C1 (n = 3, received vehicle), C2 (n = 3, no treatment), T (n =5, treated with tamoxifen, 0.3mg/Kg/day), D (n = 8, experimental diabetes by estreptozotocin, 45mg/Kg and DT (n = 8, diabetic treated with tamoxifen). The electrophoresis was accomplished in cellulose acetate. pH 8.6-8.8, TECNOW chamber, and the strains were stained by Ponceau S. The total proteins were determined by the Biuret method (Labtest). Proteinograms were obtained in densitometer BioSystems BTS-235. RESULTS: Albumin decreased progressively in the groups T, D and DT; a1 fraction increased in groups T and DT; a2 fraction increased in groups T and D, including a synergic effect in group DT; a fraction increased in groups T and D; a fraction increased in groups T, D and DT. CONCLUSIONS: The results indicate an acute phase resposta, with synergic effect of tamoxifen and diabetes, suggesting a probable hepatic lesion.

Efeito do tamoxifeno no perfil lipídico de ratos diabéticos por estreptozotocina / Effect of tamoxifen in lipids of diabetic rats induced by streptozotocin

OBJETIVO: avaliar o efeito do tamoxifeno no perfil lipídico e renal de ratos controles e diabéticos. MÉTODOS: Foram utilizados 40 ratos fêmeas Wistar (180-220g peso corporal), divididos randomicamente em 4 grupos: C (n=10, receberam veículo), T (n=10, tratados com tamoxifeno, 0,3mg/kg/dia), D (n=10, diabéticos induzidos por estreptozotocina, 45mg/Kg) e DT (n=10, diabéticos tratados com tamoxifeno). Foram dosados os analitos, glicose, colesterol total, triglicérides, proteínas totais, albumina, uréia e creatinina utilizando Kits Labtest através do analisador Cobas Mira (Alemanha,1996). RESULTADOS: o grupo T apresentou diminuição do colesterol total e triglicérides em relação ao C, e o grupo D um aumento em relação aos demais. Para as proteínas totais foi observado um aumento no Grupo T em relação ao C. A albumina diminuiu nos grupos D e DT em relação aos grupos C e T. Nos níveis de uréia houve um aumento no grupo D e DT em relação aos grupos C e T. CONCLUSÃO: Em relação ao perfil lipídico foi constatado que durante o período de 60 dias o tratamento com tamoxifeno promoveu uma diminuição dos níveis séricos de colesterol e triglicérides, mesmo associado a condição de Diabetes mellitus.

Siringoma condróide / Chondroid syringoma

Com relato de dois casos de siringoma condróide, discutem-se a extensa sinonímia, as dificuldades clínico-diagnósticas e as características histopatológicas e evolutivas desta rara neoplasia anexial cutânea. Recomenda-se a busca ativa de mais casos para a melhor investigaçäo acerca da verdadeira natureza deste tumor