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Pravenec, M. et al.

Genetics of Cd36 and the clustering of multiple cardiovascular risk factors in spontaneous hypertension.

Disorders of carbohydrate and lipid metabolism have been reported to cluster in patients with essential hypertension and in spontaneously hypertensive rats (SHRs). A deletion in the Cd36 gene on chromosome 4 has recently been implicated in defective carbohydrate and lipid metabolism in isolated adipocytes from SHRs. However, the role of Cd36 and chromosome 4 in the control of blood pressure and systemic cardiovascular risk factors in SHRs is unknown. In the SHR. BN-Il6/Npy congenic strain, we have found that transfer of a segment of chromosome 4 (including Cd36) from the Brown Norway (BN) rat onto the SHR background induces reductions in blood pressure and ameliorates dietary-induced glucose intolerance, hyperinsulinemia, and hypertriglyceridemia. These results demonstrate that a single chromosome region can influence a broad spectrum of cardiovascular risk factors involved in the hypertension metabolic syndrome. However, analysis of Cd36 genotypes in the SHR and stroke-prone SHR strains indicates that the deletion variant of Cd36 was not critical to the initial selection for hypertension in the SHR model. Thus, the ability of chromosome 4 to influence multiple cardiovascular risk factors, including hypertension, may depend on linkage of Cd36 to other genes trapped within the differential segment of the SHR. BN-Il6/Npy strain.[1]

References

Genetics of Cd36 and the clustering of multiple cardiovascular risk factors in spontaneous hypertension. Pravenec, M., Zidek, V., Simakova, M., Kren, V., Krenova, D., Horky, K., Jachymova, M., Mikova, B., Kazdova, L., Aitman, T.J., Churchill, P.C., Webb, R.C., Hingarh, N.H., Yang, Y., Wang, J.M., Lezin, E.M., Kurtz, T.W. J. Clin. Invest. (1999) [Pubmed]

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