Document Detail


Intake of high sucrose during pregnancy altered large-conductance Ca(2+)-activated K(+) channels and vessel tone in offspring's mesenteric arteries.
MedLine Citation:
PMID:  23013887     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Antenatal malnutrition could be linked to hypertension and vascular diseases in fetal origins. This study determined the influence of maternal intake of high sucrose (HS) during pregnancy on vessel tone, intracellular Ca(2+) ([Ca(2+)](i)), K(+) channels, especially large-conductance Ca(2+)-activated K(+) channels (BK), in mesenteric arteries in the offspring rats exposed to prenatal HS. Vessel tension and [Ca(2+)](i) induced by angiotensin II were higher in the small mesenteric arteries of the HS offspring. In the vascular smooth muscle cells (VSMCs) from the HS offspring, electrophysiological studies showed depressed BK current density and depolarized membrane. Western blot showed altered expressions of BK α-subunits, AT1 and AT2 receptors in mesenteric arteries. The results suggest that decreased BK channel activity and depolarized membrane potential in the VSMCs partly contributed to the increased vessel tone and [Ca(2+)](i) in the HS offspring, adding new information for understanding mechanisms in vascular malfunctions in fetal origins, and novel insights for early prevention and treatments against such vascular diseases.Hypertension Research advance online publication, 27 September 2012; doi:10.1038/hr.2012.146.
Authors:
Shigang Li; Qi Fang; Anwen Zhou; Lei Wu; Aiping Shi; Li Cao; Hui Zhu; Yujuan Liu; Caiping Mao; Zhice Xu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-27
Journal Detail:
Title:  Hypertension research : official journal of the Japanese Society of Hypertension     Volume:  -     ISSN:  1348-4214     ISO Abbreviation:  Hypertens. Res.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9307690     Medline TA:  Hypertens Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Institute for Fetology, The First Hospital of Soochow University, Suzhou, China.
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