PMID- 9428473 OWN - NLM STAT- MEDLINE DCOM- 19980128 LR - 20190815 IS - 1523-6838 (Electronic) IS - 0272-6386 (Linking) VI - 31 IP - 1 DP - 1998 Jan TI - Lovastatin reduces glomerular macrophage influx and expression of monocyte chemoattractant protein-1 mRNA in nephrotic rats. PG - 190-4 AB - Glomerular expression of monocyte chemoattractant protein-1 (MCP-1) and subsequent glomerular macrophage infiltration may play an important role in the development of glomerulosclerosis. Previous studies have shown that lovastatin ameliorates experimental renal disease and reduces MCP-1 expression in serum-stimulated, cultured mesangial cells. We investigated the effects of lovastatin on glomerular MCP-1 expression and macrophage infiltration in rats with puromycin aminonucleoside (PA) nephrosis, an experimental model of renal disease characterized by early macrophage infiltration. Male Sprague-Dawley rats were pretreated for 5 days with either lovastatin (4 mg/kg) or vehicle. At the end of pretreatment, the lovastatin-pretreated rats received a single i.v. injection of PA (50 mg/kg) and continued to receive daily lovastatin thereafter. The vehicle-pretreated rats received i.v. injections of either PA or saline, and continued to receive daily vehicle treatment thereafter. Ten days after PA injection, the vehicle-treated PA rats showed increased (P < 0.05) serum cholesterol (359 +/- 25 mg/100 mL) and urine albumin excretion (343 +/- 95 mg/24 hr), compared with the vehicle-treated control rats (61 +/- 3 mg/100 mL and 2.5 +/- 0.6 mg/24 hr, respectively). Serum cholesterol (193 +/- 22 mg/dL) and urine albumin excretion (255 +/- 68 mg/24 hr) were less in the lovastatin-treated PA rats than in the vehicle-treated PA rats. The number of glomerular macrophages, assessed as ED-1-positive cells, per glomerular profile was increased 77% in the vehicle-treated PA rats (3.3 +/- 0.2) compared with the vehicle-treated control rats (1.8 +/- 0.2) (P < 0.05). By contrast, the number of glomerular macrophages was not elevated in the lovastatin-treated PA rats (2.3 +/- 0.2). Thus, lovastatin in vivo can attenuate glomerular macrophage infiltration. This may represent one mechanism by which lovastatin ameliorates experimental glomerular disease. FAU - Park, Y S AU - Park YS AD - Department of Medicine, Hennepin County Medical Center, Minneapolis, MN 55404, USA. FAU - Guijarro, C AU - Guijarro C FAU - Kim, Y AU - Kim Y FAU - Massy, Z A AU - Massy ZA FAU - Kasiske, B L AU - Kasiske BL FAU - Keane, W F AU - Keane WF FAU - O'Donnell, M P AU - O'Donnell MP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Kidney Dis JT - American journal of kidney diseases : the official journal of the National Kidney Foundation JID - 8110075 RN - 0 (Chemokine CCL2) RN - 0 (Hydroxymethylglutaryl-CoA Reductase Inhibitors) RN - 0 (RNA, Messenger) RN - 58-60-6 (Puromycin Aminonucleoside) RN - 9LHU78OQFD (Lovastatin) SB - IM MH - Animals MH - Chemokine CCL2/*biosynthesis/genetics MH - Hydroxymethylglutaryl-CoA Reductase Inhibitors/*pharmacology MH - Kidney Glomerulus/*metabolism/pathology MH - Lovastatin/*pharmacology MH - Macrophages/*drug effects/immunology MH - Male MH - Nephrosis/chemically induced/*drug therapy MH - Polymerase Chain Reaction MH - Puromycin Aminonucleoside MH - RNA, Messenger/genetics MH - Rats MH - Rats, Sprague-Dawley EDAT- 1998/01/15 00:00 MHDA- 1998/01/15 00:01 CRDT- 1998/01/15 00:00 PHST- 1998/01/15 00:00 [pubmed] PHST- 1998/01/15 00:01 [medline] PHST- 1998/01/15 00:00 [entrez] AID - S0272638698000298 [pii] AID - 10.1053/ajkd.1998.v31.pm9428473 [doi] PST - ppublish SO - Am J Kidney Dis. 1998 Jan;31(1):190-4. doi: 10.1053/ajkd.1998.v31.pm9428473.