Effects of antisense p21 oligodeoxynucleotide on the expression of p21 protein and extracellular matrix of human glomerular mesangial cells in hyperglycemic milieu / 中华肾脏病杂志

Objective To investigate the effects of antisense p21 oligodeoxynucleotide (p21 ASODN) on the expression of p21 protein and extracellular matrix in cultured human glomerular mesangial cells (HGMC) under high glucose medium. Methods HGMCs were transfected with 50 nmol/L or 100 nmol/L p21 ASODN or scrambled control oligodeoxynucleotide (SCODN) using lipofectamine 2000. After incubation under normal (5.5 mmol/L) or high (30 mmol/L) glucose media and different times, HGMCs lysates were collected and the expression of p21, fibronectin and laminin was examined by Western blot. The secretion of fibronectin and laminin by HGMCs in supernatants of culture media was also detected with EOSA. Results High glucose media significantly stimulated the expression of p21, increased the syntheses and secretion of fibronectin and laminin in cultured HGMCs in a time-dependent manner. Transfection of HGMCs with p21 ASODN not only decreased p21 protein level caused by high glucose media, but also attenuated the expression and secretion of fibronectin and laminin in supematants of HGMCs lysates and culture media. Meanwhile, SCODN had no significant effects on the expression of p21, fibronectin and laminin. Conclusions High glucose promotes the expression of p21 , fibronectin and laminin in cultured HGMCs. Transfection of HGMCs with p21 ASODN can decrease p21 protein level caused by high glucose media, and attenuate the expression of fibronectin and laminin in supematants of HGMCs lysates and culture media. Modulation of p21 expression in HGMCs may work as an effective way to mitigate the progression of diabetic nephropathy.

EFFECTS OF MARINE FISH OIL ON THE PASMA LIPIDS AND RENAL FUNCTION IN PATIENTS WITH CRF / 中国海洋药物

We examined the effects of marine fish oil, which is rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA),in 22 patients with chronic renal failure (CRF). At 8 weeks treatment,marine fish oil led to decreases in both plasma triglyceride ( -24. 7%) and cholesterol (-14. 8%),and increases in high density lipoprotein and the ratio of apolipoprotein Al/apolipoprotein B. Meanwhile, the endogeneous creatinine clearance was raised by 39. 6%,and the increasing rate of serum creatinine level was slowed down. We conclude that supplementation of co-3 polyunsaturated fatty acids can effectively improve the abnormalities of lipids metabolism in CRF. It is beneficial to retardation of progression of CRF,and to reduction of the risk of cardiovascular complications. We hold that marine fish oil can be used as a supplementary drug in the treatment of CRF.