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2015 ; 172
(6
): 1494-504
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Exogenous administration of thiosulfate, a donor of hydrogen sulfide, attenuates
angiotensin II-induced hypertensive heart disease in rats
#MMPMID24962324
Snijder PM
; Frenay AR
; de Boer RA
; Pasch A
; Hillebrands JL
; Leuvenink HG
; van Goor H
Br J Pharmacol
2015[Mar]; 172
(6
): 1494-504
PMID24962324
show ga
BACKGROUND AND PURPOSE: Hypertension is an important mediator of cardiac damage
and remodelling. Hydrogen sulfide (H2S) is an endogenously produced
gasotransmitter with cardioprotective properties. However, it is not yet in
clinical use. We, therefore, investigated the protective effects of sodium
thiosulfate (STS), a clinically applicable H2 S donor substance, in angiotensin
II (Ang II)-induced hypertensive cardiac disease in rats. EXPERIMENTAL APPROACH:
Male Sprague Dawley rats were infused with Ang II (435?ng kg min(-1)) or saline
(control) for 3 weeks via s.c. placed osmotic minipumps. During these 3 weeks,
rats received i.p. injections of either STS, NaHS or vehicle (0.9% NaCl). KEY
RESULTS: Compared with controls, Ang II infusion caused an increase in systolic
and diastolic BP with associated cardiac damage as evidenced by cardiac
hypertrophy, an increase in atrial natriuretic peptide (ANP) mRNA, cardiac
fibrosis and increased oxidative stress. Treatment with NaHS and STS prevented
the development of hypertension and the increase in ANP mRNA levels. Furthermore,
the degree of cardiac hypertrophy, the extent of histological fibrosis in
combination with the expression of profibrotic genes and the levels of oxidative
stress were all significantly decreased. CONCLUSIONS AND IMPLICATIONS: Ang
II-induced hypertensive cardiac disease can be attenuated by treatment with STS
and NaHS. Although BP regulation is the most plausible mechanism of cardiac
protection, the antifibrotic and antioxidant properties of released sulfide may
also contribute to their effects. Our data show that H2 S might be a valuable
addition to the already existing antihypertensive and cardioprotective therapies.
|Angiotensin II/toxicity
[MESH]
|Animals
[MESH]
|Antihypertensive Agents/pharmacology
[MESH]
|Blood Pressure/drug effects
[MESH]
|Cardiomegaly/etiology/prevention & control
[MESH]