RESUMO
Effect of cigarette smoke on lipid peroxidation (LPX) and antioxidant enzymes like catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and glutathione-S-transferase (GST) in various organs like brain, heart, lung, liver and kidney of the albino rats exposed to cigarette smoke for 30 min/day for a period of 30 days were assayed. It was observed that the lipid peroxide levels in liver, lung and kidney were enhanced in case of animals exposed to cigarette smoke, whereas brain and heart did not show any change as compared to control animals. The activity of the antioxidant enzymes was also elevated in liver, lung and kidney of the test animals whereas, brain and heart did not show any change in the activities of all of these antioxidant enzymes except glutathione-s-transferase which was increased in brain also. The level of reduced glutathione (GSH) was lowered in liver, lung and kidney of the tested animals when compared with the control animals but there was no significant change in brain and heart. The results of our study suggest that cigarette smoke induces lipid peroxidation in liver, lung and kidney, and the antioxidant enzymes levels were enhanced in order to protect these tissues against the deleterious effect of the oxygen derived free radicals. The depletion of reduced glutathione in these organs could be due to it's utilization by the tissues to mop off the free radicals.
Assuntos
Antioxidantes/metabolismo , Peroxidação de Lipídeos , Fumaça/efeitos adversos , Animais , Catalase/metabolismo , Glutationa Peroxidase/metabolismo , Glutationa Transferase/metabolismo , Masculino , Plantas Tóxicas , Ratos , Ratos Endogâmicos , Superóxido Dismutase/metabolismo , Distribuição Tecidual , NicotianaRESUMO
Cutaneous metastasis is one of the many skin changes which are associated with internal malignancies. Breast, lung, and colon are the most common sources of internal primary malignancies. Gastro-esophageal junction adenocarcinoma is a rare cause of cutaneous metastasis to the scalp. Gastric adenocarcinoma usually metastasizes to the liver, peritoneal cavity and regional lymph nodes more often than to skin. We are presenting a case of cutaneous metastasis on the scalp of a 79-year-old man, who was diagnosed and operated for gastro-oesophageal junction adenocarcinoma one year back.
RESUMO
Description of a meridian-like channel is available in the Tamil medical text, Akattiyar Nayanaviti - 500, attributed to Akattiyar. Therefore, further studies are essential to trace the interaction between Chinese medicine and the medical practices of southern India.