Purinergic signalling in endocrine organs.
1Autonomic Neuroscience Centre, University College Medical School, Rowland Hill Street, London, NW3 2PF, UK, g.burnstock@ucl.ac.uk.
Purinergic Signalling
|November 23, 2013
Summary
Purinergic signaling, involving adenosine triphosphate (ATP) and its receptors, plays a crucial role in hormone release across various endocrine glands, including the pituitary, pancreas, and adrenal glands.
Area of Science:
- Endocrinology
- Neuroendocrinology
- Cellular signaling
Background:
- Purinergic signaling, mediated by purinoceptors, is integral to endocrine system function.
- Adenosine triphosphate (ATP) and adenosine are key signaling molecules involved in various physiological processes.
Purpose of the Study:
- To review the widespread involvement of purinergic signaling in endocrine biology.
- To highlight the role of P1, P2X, and P2Y receptors in hormone secretion across different endocrine tissues.
Main Methods:
- Literature review of studies investigating purinergic signaling in endocrine tissues.
- Identification of purinoceptor subtypes (P1, P2X, P2Y) and their roles in hormone release.
Main Results:
- Pituitary cells utilize P1, P2X, and P2Y receptors for hormone release.
- ATP regulates insulin secretion (pancreas), thyroid hormone secretion, and catecholamine release (adrenal gland).
- Purinoceptors are involved in progesterone secretion (ovary), and testosterone/estradiol secretion (testes).
Conclusions:
- Purinergic signaling is a fundamental mechanism regulating diverse endocrine functions.
- The presence and activity of P2X and P2Y receptors are confirmed in numerous neuroendocrine cells and tissues, including the placenta, lung, skin, prostate, intestine, and adipocytes.
- ATP and adenosine act as critical modulators in neuroendocrine pathways, influencing the release of hormones like LHRH, vasopressin, and oxytocin.
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