[The influence of hypertension and antihypertensive agents on experimental IgA nephropathy (IgAN)]

In an attempt to evaluate the influence of hypertension and antihypertensive agents on IgAN, IgAN and hypertension experimental models were induced in SD rats and divided into 4 groups: (1) IgAN(n = 8); (2) IgAN+by hypertension(n = 8); (3) captopril 4mg/100gBW/d, for 42 days administered to rats as group (2) (n = 8); (4) nifedipine 300ug/100gBW/d, for 42 days administered to rats as group (2) (n = 8). Blood pressure was measured at the 12th, 14th, 16th, 18th and 20th week. Urinary protein, serum angiotensin II (AT II) and renal pathologic changes were examined at the 20th week. Our results suggest that hypertension worsens IgAN by glomerular mesangial proliferation in early stages. Though Captopril has the same therapeutic effect on hypertension as Nifedipine does, the former has been proven to have potentially beneficial effects on diminishing proteinuria as well as mesangial lesions. This is consistent with the suppression of serum ATII which favours glomerular microcirculation.