Genetic analysis of metabolic defects in the spontaneously hypertensive rat
| Autor: | V. Bila, Ludmila Kazdova, Theodore W. Kurtz, M Pravenec, Petr Mlejnek, Marie Jáchymová, Alena Musilova, Elizabeth St. Lezin, Drahomira Krenova, Vlastimil Kostka, Blanka Míková, Miroslava Šimáková, Vladimir Kren, Vaclav Zidek, Karel Horký |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Male
medicine.medical_specialty medicine.medical_treatment Congenic Hyperlipidemias Biology Quantitative trait locus Essential hypertension Spontaneously hypertensive rat Insulin resistance Quantitative Trait Heritable Genetic linkage Internal medicine Rats Inbred BN Rats Inbred SHR Glucose Intolerance Genetics medicine Animals Insulin Triglycerides Glucose tolerance test medicine.diagnostic_test Glucose Tolerance Test medicine.disease Rats Disease Models Animal Endocrinology Cholesterol Glucose Female Insulin Resistance |
| Zdroj: | Mammalian genome : official journal of the International Mammalian Genome Society. 13(5) |
| ISSN: | 0938-8990 |
| Popis: | Abnormalities in carbohydrate and lipid metabolism are common in patients with essential hypertension and in the spontaneously hypertensive rat (SHR). To identify chromosome regions contributing to this clustering of cardiovascular risk factors in the SHR, we searched for quantitative trait loci (QTL) associated with insulin resistance, glucose intolerance, and dyslipidemia by using the HXB/BXH recombinant inbred (RI) strains. Analysis of variance in RI strains suggested significant effects of genetic factors. A genome screening of the RI strains with more than 700 markers revealed QTL significantly associated with insulin resistance on Chromosomes (Chrs) 3 and 19. The Chr 19 QTL was confirmed by testing a previously derived SHR-19 congenic strain: transfer of a Chr 19 segment delineated by markers D19Rat57 and D19Mit7 from the Brown Norway (BN/Cr) strain onto the genetic background of the SHR/Ola was associated with decreased insulin and glucose concentrations and ameliorated insulin resistance at the tissue level. These findings suggest that closely linked genes on Chr 19, or perhaps even a single gene with pleiotropic effects, influence the clustering of metabolic disturbances in the SHR-BN model. |
| Databáze: | OpenAIRE |
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