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Twenty-four h changes in endogenous tyrosine hydroxylase (TH) activity, monoamines and their metabolites as well as N-acetyltransferase (NAT) activity and melatonin content were investigated in the Syrian hamster pineal gland. Both NAT activity and melatonin content exhibited an expected rise 8 h (0400 h) after darkness onset. Pineal dopamine (DA) and… (More)
From March 1977 to December 1978, postmortem examination was performed at Wadsworth Veterans Administration Medical Center for 20 patients who had had nosocomially acquired Legionnaires' disease. Seventeen patients died during the acute illness due to Legionnaires' disease, and three patients died after clinical resolution of the acute process. The only… (More)
A case of leiomyosarcoma of the breast in a 53-year-old man originating in the erectile musculature of the nipple is presented. The tumor assumed roughly the conical configuration of the nipple musculature and was limited to the mammary gland. Ultrastructural study of the tumor revealed neoplastic smooth muscle cells with typical myofilaments.
La Web Of Science (WOS) es una plataformade la empresa Thomson Reuters basada en tecnología web y formada por una amplia colección de bases de datos bibliográficas, citas y referencias de publicaciones científicas de cualquier disciplina del conocimiento –científico, tecnológico, humanístico y sociológico– desde 1945. Hasta enero de 2014 esta plataforma era… (More)
Time-dependent modifications of N-acetyltransferase (NAT) activity, melatonin content, and tyrosine hydroxylase (TH) activity within the isolated rat pineal over a 72 h of incubation period were studied. Both pineal NAT activity and melatonin content displayed similar decreases after 12 h of incubation, and reached a maximal reduction of 82% or 93%,… (More)
The results of medroxyprogesterone acetate injections in cats to prevent estrus are reported. 5 cats were given 25 mg depot-medroxyprogesterone injections every 3 months for an average period of 5 years. Of these 2 developed adenocarcinoma of the breast at 4 and 2 years, respectively, after the last injections. Histologically, the tumors resembled human… (More)