In this study 250 patients with essential hypertension were investigated in comparison to 218 normotensives for association with epidemiological parameters. Of these DNA samples from 176 patients and 168 controls were analyzed for intron 4 27bp repeat polymorphism of eNOS gene. The study revealed significantly high risk of essential hypertension for individuals who were obese, with a positive family history and with non-vegetarian food habits. Though the intron 4b/a polymorphism of eNOS gene did not reveal any association with essential hypertension in general, males with a/a genotype of the polymorphism did show significantly high risk for developing hypertension.

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Upper limb gangrene is uncommon compared to lower limb gangrene. But digital gangrene is seen occasionally in patients on maintenance hemodialysis. Of the various causes described, atherosclerosis, diabetic vascular disease, following AV fistula surgery were few of the causes. Herein, we report a case of development of early digital gangrene following AV fistula in a patient on maintenance hemodialysis.

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