Key result
The 50-kDa type-2 angiotensin II receptor is consistently expressed in the adrenal cortex across a wide variety of mammals, including rats, guinea pigs, bovines, and humans.
Extends cross-species AT2 mapping in adrenal cortex; leaves open its functional role and therapeutic relevance in humans.
The localization of the type-2 angiotensin II receptor (AT2) in the adrenal glands of rats, guinea pigs, bovines, and humans was examined at the mRNA and protein levels. PCR products for AT2 were detected in the adrenal cortices and adrenal medullae of all the mammals examined with an RT-PCR technique. Three different anti-AT2 antibodies (Abs), whose specificity was confirmed in our hands, recognized a 50-kDa protein in the adrenal glands of the four mammals, and this recognition was abolished by the preabsorption of an Ab with an antigen. Immunoblotting and immunohistochemistry revealed that the 50-kDa protein was expressed consistently and variably in the adrenal cortices and medullae of various mammals, respectively. We conclude that the 50-kDa AT2 is consistently expressed in the adrenal cortex in a wide variety of mammals.
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Harada et al. (2010) studied this question. Type-2 angiotensin II receptor (AT2) localization was evaluated on Localization and expression of AT2 at mRNA and protein levels. The 50-kDa type-2 angiotensin II receptor is consistently expressed in the adrenal cortex across a wide variety of mammals, including rats, guinea pigs, bovines, and humans.
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