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KCNQ1 variants associate with hypertension in type 2 diabetes and affect smooth muscle contractility in vitro
- Source :
- Journal of cellular physiology. 232(12)
- Publication Year :
- 2016
-
Abstract
- KCNQ1 encodes a potassium voltage-gated channel and represents a susceptibility locus for type 2 diabetes mellitus (T2DM). Here, we explored the association between KCNQ1 polymorphisms and hypertension risk in individuals with T2DM, as well as the role of KCNQ1 in vascular smooth muscle cell contraction in vitro. To investigate the relationship between KCNQ1 and the risk of developing hypertension in patients with T2DM, we divided the T2DM cohort into hypertension (n = 452) and non-hypertension (n = 541) groups. The Mann-Whitney U test, chi-square test, and multivariate regression analyses were used to assess the clinical characteristics and genotypic frequencies. In vitro studies utilized the rat aortic smooth muscle A10 cell line. Patients in the hypertension group were significantly older at the time of enrollment and had higher levels of body mass index, waist-to-hip ratio, and triglyceride than those in the non-hypertension group. The KCNQ1 rs3864884 and rs12576239 genetic variants were associated with hypertension in T2DM. KCNQ1 expression was lower in the individuals with the CC versus the CT and TT genotypes. Smooth muscle cell contractility was inhibited by treatment with a KCNQ1 inhibitor. These results suggest that KCNQ1 might be associated with hypertension in individuals with T2DM.
- Subjects :
- 0301 basic medicine
Male
medicine.medical_specialty
Vascular smooth muscle
endocrine system diseases
Genotype
Physiology
Clinical Biochemistry
Type 2 diabetes
030204 cardiovascular system & hematology
Cell Line
03 medical and health sciences
chemistry.chemical_compound
0302 clinical medicine
Internal medicine
medicine
Animals
Humans
Aged
Triglyceride
urogenital system
business.industry
nutritional and metabolic diseases
Type 2 Diabetes Mellitus
Genetic Variation
Muscle, Smooth
Cell Biology
Smooth muscle contraction
Middle Aged
medicine.disease
Rats
030104 developmental biology
Endocrinology
chemistry
Diabetes Mellitus, Type 2
Cohort
Hypertension
KCNQ1 Potassium Channel
Female
business
Body mass index
Muscle Contraction
Subjects
Details
- ISSN :
- 10974652 and 12576239
- Volume :
- 232
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- Journal of cellular physiology
- Accession number :
- edsair.doi.dedup.....6ea91438c44c03fa65adde6e9fd3aa1b