Tags

Type your tag names separated by a space and hit enter

Regulatory effect of hydrogen sulfide on vascular collagen content in spontaneously hypertensive rats.
Hypertens Res. 2008 Aug; 31(8):1619-30.HR

Abstract

The present study aimed to examine the regulatory effect of hydrogen sulfide (H2S) on vascular collagen remodeling in hypertensive rats. After 5 weeks of H2S donor treatment, tail blood pressure, the endogenous H2S production rate, levels of hydroxyproline and collagen type I, collagen type I protein expression in the thoracic aorta, [3H]thymidine ([3H]TdR) incorporation, [3H]proline incorporation, and [3H]hydroxyproline secretion in cultured vascular smooth muscle cells (VSMCs) were measured. We also examined the effects of NaHS on angiotensin II-induced mitogen-activated protein kinase (MAPK) activation and angiotensin II type 1 (AT1) receptor binding affinity. Vascular hydroxyproline and collagen type I levels were high, and collagen type I immunohistochemical staining in the thoracic aorta was strong in SHRs compared to Wistar Kyoto (WKY) rats. [3H]TdR and [3H]proline incorporation and [3H]hydroxyproline secretion were also higher in cultured VSMCs from SHR than those from WKY rats. However, vascular H2S production was lower in SHR compared with WKY rats. Treatment with NaHS increased vascular H2S production in SHRs, and partly reversed the changes in [3H]TdR and [3H]proline incorporation and [3H]hydroxyproline secretion. In cultured VSMCs, [3H]TdR and [3H]proline incorporation stimulated by angiotensin II was inhibited by incubation with NaHS. The inhibitory effect of NaHS on VSMC proliferation and collagen generation was stronger in the SHR than in the WKY group. Moreover, NaHS could dose-dependently decrease angiotensin II-induced MAPK activation. NaHS also decreased AT1 receptor binding as well as the binding affinity of the AT1 receptor. Thus, in SHRs, which demonstrated vascular remodeling and collagen accumulation, the endogenous H2S pathway is involved in the regulation of excess vascular collagen.

Authors+Show Affiliations

Department of Pediatrics, Peking University First Hospital, Beijing, PR China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18971538

Citation

Zhao, Xia, et al. "Regulatory Effect of Hydrogen Sulfide On Vascular Collagen Content in Spontaneously Hypertensive Rats." Hypertension Research : Official Journal of the Japanese Society of Hypertension, vol. 31, no. 8, 2008, pp. 1619-30.
Zhao X, Zhang LK, Zhang CY, et al. Regulatory effect of hydrogen sulfide on vascular collagen content in spontaneously hypertensive rats. Hypertens Res. 2008;31(8):1619-30.
Zhao, X., Zhang, L. K., Zhang, C. Y., Zeng, X. J., Yan, H., Jin, H. F., Tang, C. S., & DU, J. B. (2008). Regulatory effect of hydrogen sulfide on vascular collagen content in spontaneously hypertensive rats. Hypertension Research : Official Journal of the Japanese Society of Hypertension, 31(8), 1619-30. https://doi.org/10.1291/hypres.31.1619
Zhao X, et al. Regulatory Effect of Hydrogen Sulfide On Vascular Collagen Content in Spontaneously Hypertensive Rats. Hypertens Res. 2008;31(8):1619-30. PubMed PMID: 18971538.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Regulatory effect of hydrogen sulfide on vascular collagen content in spontaneously hypertensive rats. AU - Zhao,Xia, AU - Zhang,Li-Ke, AU - Zhang,Chun-Yu, AU - Zeng,Xiang-Jun, AU - Yan,Hui, AU - Jin,Hong-Fang, AU - Tang,Chao-Shu, AU - DU,Jun-Bao, PY - 2008/10/31/pubmed PY - 2008/12/17/medline PY - 2008/10/31/entrez SP - 1619 EP - 30 JF - Hypertension research : official journal of the Japanese Society of Hypertension JO - Hypertens Res VL - 31 IS - 8 N2 - The present study aimed to examine the regulatory effect of hydrogen sulfide (H2S) on vascular collagen remodeling in hypertensive rats. After 5 weeks of H2S donor treatment, tail blood pressure, the endogenous H2S production rate, levels of hydroxyproline and collagen type I, collagen type I protein expression in the thoracic aorta, [3H]thymidine ([3H]TdR) incorporation, [3H]proline incorporation, and [3H]hydroxyproline secretion in cultured vascular smooth muscle cells (VSMCs) were measured. We also examined the effects of NaHS on angiotensin II-induced mitogen-activated protein kinase (MAPK) activation and angiotensin II type 1 (AT1) receptor binding affinity. Vascular hydroxyproline and collagen type I levels were high, and collagen type I immunohistochemical staining in the thoracic aorta was strong in SHRs compared to Wistar Kyoto (WKY) rats. [3H]TdR and [3H]proline incorporation and [3H]hydroxyproline secretion were also higher in cultured VSMCs from SHR than those from WKY rats. However, vascular H2S production was lower in SHR compared with WKY rats. Treatment with NaHS increased vascular H2S production in SHRs, and partly reversed the changes in [3H]TdR and [3H]proline incorporation and [3H]hydroxyproline secretion. In cultured VSMCs, [3H]TdR and [3H]proline incorporation stimulated by angiotensin II was inhibited by incubation with NaHS. The inhibitory effect of NaHS on VSMC proliferation and collagen generation was stronger in the SHR than in the WKY group. Moreover, NaHS could dose-dependently decrease angiotensin II-induced MAPK activation. NaHS also decreased AT1 receptor binding as well as the binding affinity of the AT1 receptor. Thus, in SHRs, which demonstrated vascular remodeling and collagen accumulation, the endogenous H2S pathway is involved in the regulation of excess vascular collagen. SN - 0916-9636 UR - https://www.unboundmedicine.com/medline/citation/18971538/Regulatory_effect_of_hydrogen_sulfide_on_vascular_collagen_content_in_spontaneously_hypertensive_rats_ L2 - https://medlineplus.gov/highbloodpressure.html DB - PRIME DP - Unbound Medicine ER -