|
Ken Sugimoto
Department Kawasaki Medical School Kawasaki Medical School, Department of General Geriatric Medicine, Position Professor |
|
| Article types | 原著 |
| Language | English |
| Peer review | Peer reviewed |
| Title | Leptin-receptor polymorphisms relate to obesity through blunted leptin-mediated sympathetic nerve activation in a Caucasian male population. |
| Journal | Formal name：Hypertension research : official journal of the Japanese Society of Hypertension Abbreviation：Hypertens Res ISSN code：09169636/09169636 |
| Domestic / Foregin | Foregin |
| Volume, Issue, Page | 31(6),pp.1093-1100 |
| Author and coauthor | Masuo Kazuko, Straznicky Nora E, Lambert Gavin W, Katsuya Tomohiro, Sugimoto Ken, Rakugi Hiromi, Socratous Florentia, Hastings Jacqueline, Lambert Elisabeth A, Ogihara Toshio, Esler Murray D |
| Publication date | 2008/06 |
| Summary | Leptin plays a key role in the regulation of body weight through the sympathetic nervous system; however, the contributions of leptin-receptor polymorphisms to obesity and sympathetic nerve activity have not been fully clarified. In the present study, we examined the relationships between leptin-receptor polymorphisms, plasma leptin and whole-body norepinephrine (NE) spillover as an index of sympathetic nerve activity in a Caucasian male cohort. In 129 young healthy normotensive men with a wide range of body mass index (BMI) (19.4-39.5 kg/m(2)), we measured leptin-receptor polymorphisms (Gln223Arg, Lys656Asn, and Lys109Arg), plasma leptin levels, whole-body NE spillover, whole-body NE clearance, BMI and blood pressure (BP) levels in the supine position after overnight fasting. Overweight-obese (BMI>or=25 kg/m(2)) subjects had significantly greater BMI, BP levels, plasma leptin and whole-body NE spillover compared to lean (BMI<25 kg/m(2)) subjects, but the NE clearance was similar. Overweight-obese subjects had significantly higher frequencies of the Arg223 allele and the Arg223 homozygous allele of Gln223Arg and the Asn656 allele of Lys656Asn compared to lean subjects. Subjects carrying the Arg223 homozygous or the Asn656 allele had higher levels of plasma leptin, BMI, waist circumference, and waist-to-hip ratio, but significantly less whole-body NE spillover, especially when they were also overweight-obese. BP levels and whole-body NE clearance were similar between subjects with and without the Arg223 homozygous or Asn656 allele. No differences were found in the distributions of the Arg109 allele of Lys109Arg polymorphism between nonobese and overweight-obese subjects. In addition, BMI, BP, plasma leptin levels, whole-body NE spillover and whole-body NE clearance were similar between those with and without the Arg109 allele. Together, these findings demonstrate that leptin-receptor polymorphisms were related to the incidence of obesity in a Caucasian male populatio |
| DOI | 10.1291/hypres.31.1093 |
| PMID | 18716356 |