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[ERK1/2 pathway involved in the expression of ETB receptors of the culturing smooth muscle cells of rat mesenteric artery].
Yao Xue Xue Bao. 2006 Mar; 41(3):257-62.YX

Abstract

AIM

To determine the involvement of extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in the expression of endothelin receptor type B (ETB) during culture.

METHODS

SB386023, a specific inhibitor for ERK1/2 pathway, was used to define the intracellular signaling pathway for the upregulation of ETB receptors and sarafotoxin 6c (S6c), a selective agonist for ETB receptors, induced contraction in isolated rat superior mesenteric arteries. The contraction was recorded by a sensitive in vitro myograph and the receptor mRNA was quantified by a real-time PCR. The phosphorylated ERK1/2 proteins were analyzed by phosphoELISA assay.

RESULTS

S6c induced strong contractile responses of the artery after culture for 24 h, while there was no response to S6c in fresh vessel segments. The enhanced contractile response to S6c paralleled with an increase of mRNA for ETB receptors. The phosphorylated ERK1/2 proteins significantly increased after culture for 3 h. After co-culture with SB386023 for 24 h, S6c-induced contractions significantly decreased with reduction of Emax from (217 +/- 14) % to (127 +/- 23) % (P <0.01). This response paralleled with a decreased level of ETB receptor mRNA.

CONCLUSION

ERK1/2 pathway was involved in the up-regulation of ETB receptors on smooth muscle cells isolated from rat mesenteric arteries during culture.

Authors+Show Affiliations

First Hospital, Xi'an, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

chi

PubMed ID

16758999

Citation

Luo, Guo-gang, et al. "[ERK1/2 Pathway Involved in the Expression of ETB Receptors of the Culturing Smooth Muscle Cells of Rat Mesenteric Artery]." Yao Xue Xue Bao = Acta Pharmaceutica Sinica, vol. 41, no. 3, 2006, pp. 257-62.
Luo GG, Cao YX, Xu CB, et al. [ERK1/2 pathway involved in the expression of ETB receptors of the culturing smooth muscle cells of rat mesenteric artery]. Yao Xue Xue Bao. 2006;41(3):257-62.
Luo, G. G., Cao, Y. X., Xu, C. B., Ma, A. Q., & Edvinsson, L. (2006). [ERK1/2 pathway involved in the expression of ETB receptors of the culturing smooth muscle cells of rat mesenteric artery]. Yao Xue Xue Bao = Acta Pharmaceutica Sinica, 41(3), 257-62.
Luo GG, et al. [ERK1/2 Pathway Involved in the Expression of ETB Receptors of the Culturing Smooth Muscle Cells of Rat Mesenteric Artery]. Yao Xue Xue Bao. 2006;41(3):257-62. PubMed PMID: 16758999.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [ERK1/2 pathway involved in the expression of ETB receptors of the culturing smooth muscle cells of rat mesenteric artery]. AU - Luo,Guo-gang, AU - Cao,Yong-xiao, AU - Xu,Cang-bao, AU - Ma,Ai-qun, AU - Edvinsson,Lars, PY - 2006/6/9/pubmed PY - 2007/10/2/medline PY - 2006/6/9/entrez SP - 257 EP - 62 JF - Yao xue xue bao = Acta pharmaceutica Sinica JO - Yao Xue Xue Bao VL - 41 IS - 3 N2 - AIM: To determine the involvement of extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in the expression of endothelin receptor type B (ETB) during culture. METHODS: SB386023, a specific inhibitor for ERK1/2 pathway, was used to define the intracellular signaling pathway for the upregulation of ETB receptors and sarafotoxin 6c (S6c), a selective agonist for ETB receptors, induced contraction in isolated rat superior mesenteric arteries. The contraction was recorded by a sensitive in vitro myograph and the receptor mRNA was quantified by a real-time PCR. The phosphorylated ERK1/2 proteins were analyzed by phosphoELISA assay. RESULTS: S6c induced strong contractile responses of the artery after culture for 24 h, while there was no response to S6c in fresh vessel segments. The enhanced contractile response to S6c paralleled with an increase of mRNA for ETB receptors. The phosphorylated ERK1/2 proteins significantly increased after culture for 3 h. After co-culture with SB386023 for 24 h, S6c-induced contractions significantly decreased with reduction of Emax from (217 +/- 14) % to (127 +/- 23) % (P <0.01). This response paralleled with a decreased level of ETB receptor mRNA. CONCLUSION: ERK1/2 pathway was involved in the up-regulation of ETB receptors on smooth muscle cells isolated from rat mesenteric arteries during culture. SN - 0513-4870 UR - https://www.unboundmedicine.com/medline/citation/16758999/[ERK1/2_pathway_involved_in_the_expression_of_ETB_receptors_of_the_culturing_smooth_muscle_cells_of_rat_mesenteric_artery]_ L2 - https://antibodies.cancer.gov/detail/CPTC-MAPK3-2 DB - PRIME DP - Unbound Medicine ER -