PMID- 21270815 OWN - NLM STAT- MEDLINE DCOM- 20110901 LR - 20151119 IS - 1348-4214 (Electronic) IS - 0916-9636 (Linking) VI - 34 IP - 4 DP - 2011 Apr TI - L/N-type calcium channel blocker cilnidipine ameliorates proteinuria and inhibits the renal renin-angiotensin-aldosterone system in deoxycorticosterone acetate-salt hypertensive rats. PG - 521-9 LID - 10.1038/hr.2010.279 [doi] AB - Cilnidipine, an N/L-type calcium channel blocker, has been reported to inhibit sympathetic nerve activity and has a greater renoprotective effect than L-type calcium channel blockers. To investigate the hypothesis that cilnidipine might ameliorate advanced hypertensive nephropathy and inhibit the renal renin-angiotensin-aldosterone system, cilnidipine (1 mg per kg per day) or amlodipine (1 mg per kg per day) was administered to uninephrectomized deoxycorticosterone (DOCA)-salt hypertensive rats (DOCA-salt) for 4 weeks by gavage. Although the blood pressure in the DOCA-salt group was higher than that of control, neither cilnidipine nor amlodipine had any effect on the increase in blood pressure in the DOCA-salt group. The DOCA (40 mg per kg per week, subcutaneously (s.c.)) and salt (1% NaCl in drinking water) treatment significantly aggravated the levels of urinary protein excretion and creatinine clearance and increased glomerulosclerosis and collagen deposition in the tubulointerstitial area of the kidney. These effects were attenuated by cilnidipine treatment. Reverse transcription-polymerase chain reaction analysis revealed that the renal expression of mRNA for collagen I/IV and transforming growth factor-beta was enhanced in the DOCA-salt group and that the overexpression of these molecules was suppressed by cilnidipine. Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-derived superoxide production in the kidney and urinary norepinephrine excretion, which were enhanced in the DOCA-salt group, were suppressed by cilnidipine. Cilnidipine also decreased the activity and expression of angiotensin-converting enzyme (ACE) and the aldosterone concentration in the renal homogenate. Although neither cilnidipine nor amlodipine had any effect on the increased blood pressure in the DOCA-salt group, these renal changes were not induced by treatment with amlodipine. In conclusion, cilnidipine inhibited renal dysfunction, sympathetic nerve activity and renal renin-angiotensin-aldosterone system in the DOCA-salt group. FAU - Toba, Hiroe AU - Toba H AD - Department of Clinical Pharmacology, Division of Pathological Sciences, Kyoto Pharmaceutical University, Kyoto, Japan. toba@mb.kyoto-phu.ac.jp FAU - Yoshida, Mamiko AU - Yoshida M FAU - Tojo, Chisato AU - Tojo C FAU - Nakano, Arisa AU - Nakano A FAU - Oshima, Yuko AU - Oshima Y FAU - Kojima, Yushi AU - Kojima Y FAU - Noda, Kazuki AU - Noda K FAU - Wang, Jiahong AU - Wang J FAU - Kobara, Miyuki AU - Kobara M FAU - Nakata, Tetsuo AU - Nakata T LA - eng PT - Comparative Study PT - Journal Article DEP - 20110127 PL - England TA - Hypertens Res JT - Hypertension research : official journal of the Japanese Society of Hypertension JID - 9307690 RN - 0 (Calcium Channel Blockers) RN - 0 (Calcium Channels, L-Type) RN - 0 (Calcium Channels, N-Type) RN - 0 (Dihydropyridines) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Membrane Proteins) RN - 0 (NPHS2 protein) RN - 0 (Transforming Growth Factor beta) RN - 1J444QC288 (Amlodipine) RN - 40GP35YQ49 (Desoxycorticosterone) RN - 451W47IQ8X (Sodium Chloride) RN - 9007-34-5 (Collagen) RN - 97T5AZ1JIP (cilnidipine) SB - IM MH - Amlodipine/pharmacology/therapeutic use MH - Animals MH - Calcium Channel Blockers/*pharmacology/*therapeutic use MH - Calcium Channels, L-Type/drug effects MH - Calcium Channels, N-Type/drug effects MH - Collagen/metabolism MH - Desoxycorticosterone/adverse effects MH - Dihydropyridines/*pharmacology/*therapeutic use MH - Disease Models, Animal MH - Hypertension/chemically induced/*drug therapy/physiopathology MH - Intracellular Signaling Peptides and Proteins/metabolism MH - Kidney/drug effects/metabolism/pathology MH - Male MH - Membrane Proteins/metabolism MH - Proteinuria/*prevention & control MH - Rats MH - Rats, Wistar MH - Renin-Angiotensin System/*drug effects/physiology MH - Sodium Chloride/adverse effects MH - Transforming Growth Factor beta/metabolism MH - Treatment Outcome EDAT- 2011/01/29 06:00 MHDA- 2011/09/02 06:00 CRDT- 2011/01/29 06:00 PHST- 2011/01/29 06:00 [entrez] PHST- 2011/01/29 06:00 [pubmed] PHST- 2011/09/02 06:00 [medline] AID - hr2010279 [pii] AID - 10.1038/hr.2010.279 [doi] PST - ppublish SO - Hypertens Res. 2011 Apr;34(4):521-9. doi: 10.1038/hr.2010.279. Epub 2011 Jan 27.