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Growth hormone secretagogue receptor subtypes 1a and 1b are expressed in the human adrenal cortex

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Ghrelin is an endogenous ligand of the growth hormone secretagogue receptors (GHS-Rs), two subtypes of which have been recognized: the biologically active 1a and the biologically inactive 1b subtype. Reverse transcription-polymerase chain reaction demonstrated ghrelin and GHS-R1b mRNAs in eight human adrenal cortexes, and GHS-R1a mRNA only in six of the eight adrenal specimens. The GHS-R1a expression was absent in the two adrenal cortexes obtained from 76- and 79-year old male patients. Since previous studies showed that ghrelin does not affect steroid-hormone secretion, the present findings suggest that ghrelin via the GHS-R1a could be involved in the autocrine-paracrine control of human-adrenal growth.
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Document Type: Research Article

Affiliations: Department of Human Anatomy and Physiology, Section of Anatomy, University of Padua, I-35121 Padua, Italy

Publication date: February 1, 2004

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  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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