In the hypertensive population referred for coronary and renal angiography, the ACE insertion/deletion variant but not eNOS Glu298Asp or MTHFR C677T polymorphism, seems to coexist with atheromatous renal artery stenosis.
We investigated plasma folate and vitamin B12, methylenetetrahydrofolate reductase (MTHFR) C677T and cystathionine beta-synthase (CBS) 844ins68 polymorphisms, and homocysteine levels before and after methionine (100 mg/kg) loading in 58 patients with angiographically documented renal artery stenosis and mildly impaired renal function.