Document Detail

Restoration of arterial baroreflex function contributes to organ protection in spontaneously hypertensive rats treated with long-term hydrochlorothiazide mixture.
MedLine Citation:
PMID:  12542453     Owner:  NLM     Status:  MEDLINE    
1. Hydrochlorothiazide mixture (HCTM) is widely used in China for the treatment of hypertension. This mixture consists of hydrochlorothiazide, triamterene, reserpine, hydralazine and chlordiazpoxide, with small (one-third to one-fifth of normal) doses of each drug. The present study was designed to investigate the effects of this mixture on blood pressure, blood pressure variability (BPV), baroreflex sensitivity (BRS) and end-organ damage in spontaneously hypertensive rats (SHR). 2. The HCTM was mixed in the rat chow and rats were treated for 4 months. After treatment, rats were catheterized and their blood pressure, BPV and BRS were measured in the conscious state. Organ damage was examined after these measurements had been completed. 3. It was found that HCTM not only decreased blood pressure and BPV, but also ameliorated impaired BRS in SHR. The HCTM had an obvious effect on organ protection in SHR. 4. The HCTM prevented left ventricular hypertrophy and this effect was mainly related to a decrease in systolic blood pressure. The effects of HCTM on preventing renal atrophy were mainly determined by BRS. Baroreflex sensitivity was the most important determinant for predicting organ damage in HCTM-treated SHR. 5. In conclusion, long-term treatment of rats with HCTM prevented hypertensive organ damage. Restoration of arterial baroreflex function contributes to organ protection in SHR treated in the long term with HCTM.
Ze-An Lu; He-Hui Xie; Li-Ping Xu; An-Fan Yin; Chao-Yu Miao; Ding-Feng Su
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical and experimental pharmacology & physiology     Volume:  30     ISSN:  0305-1870     ISO Abbreviation:  Clin. Exp. Pharmacol. Physiol.     Publication Date:    2003 Jan-Feb
Date Detail:
Created Date:  2003-01-24     Completed Date:  2003-11-07     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0425076     Medline TA:  Clin Exp Pharmacol Physiol     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  49-54     Citation Subset:  IM    
Department of Pharmacology, Basic Medical College, Second Military Medical University, Shanghai, China.
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MeSH Terms
Antihypertensive Agents / pharmacology*
Arteries / physiology
Baroreflex / drug effects*
Blood Pressure / drug effects*
Drug Administration Schedule
Heart / drug effects
Hydrochlorothiazide / administration & dosage,  pharmacology*,  therapeutic use
Hypertension / drug therapy,  pathology,  physiopathology*
Kidney / drug effects,  pathology
Myocardium / pathology
Rats, Inbred SHR
Reg. No./Substance:
0/Antihypertensive Agents; 58-93-5/Hydrochlorothiazide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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