Augmented retinal endothelin-1, endothelin-3, endothelinA and endothelinB gene expression in chronic diabetes

Current Eye Research
S ChakrabartiA A Sima

Abstract

Endothelins (ETs) belong to a family of vasoactive peptides implicated in several disorders of the microvasculature. In the present study, we investigated ET-1 and ET-3 peptide mRNAs and ETA, ETB receptor mRNAs in the retina of diabetic BB/W rats and age-matched, non-diabetic control animals, following six months of diabetes. Total mRNA was extracted from each retina and was subjected to reverse transcriptase polymerase chain reaction for ET-1, ET-3, ETA and ETB. Simultaneously, beta-globin was amplified and used as a housekeeping gene. The products were analyzed on agarose gels and the specificity of the amplification was established by hybridization with amplification-specific biotinylated oligoprobes. For quantification, the products from the linear phase of amplification were subjected to serial dilution slot-blot hybridization and densitometry. ETs and their receptor mRNA expressions were present in the retina. Retinas from the diabetic animals showed significant increases in ET-1, ET-3 ET(A), ET(B) mRNA expressions compared to those from control rats. These findings indicate that retinal ET-1, ET-3, ET(A) and ET(B) mRNA expression in increased in the chronically diabetic BB/W rat. Augmented gene expression of ETs and thei...Continue Reading

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Citations

Aug 10, 2000·Transplant International : Official Journal of the European Society for Organ Transplantation·D X DengS Chakrabarti
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Mar 10, 2018·Eye·Francesco Saverio SorrentinoFrancesco Parmeggiani
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Aug 29, 2021·Pharmaceutics·Rafael SimóCristina Hernández

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