The crosstalks between adipocytes and other endocrine cells.

Adipocytes were traditionally thought as a passive depot of energy (fat). It has recently been recognized that adipocytes are pivotal endocrine cells secreting a spectrum of important hormones called adipokines, including leptin, resistin and neuropeptide-Y (NPY). Adipokines are relevant to various...

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Main Author: Ong, Jun Wei.
Other Authors: Chen Peng
Format: Final Year Project
Language:English
Published: 2010
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Online Access:http://hdl.handle.net/10356/39026
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-390262023-03-03T15:38:47Z The crosstalks between adipocytes and other endocrine cells. Ong, Jun Wei. Chen Peng School of Chemical and Biomedical Engineering DRNTU::Engineering::Chemical engineering::Biotechnology Adipocytes were traditionally thought as a passive depot of energy (fat). It has recently been recognized that adipocytes are pivotal endocrine cells secreting a spectrum of important hormones called adipokines, including leptin, resistin and neuropeptide-Y (NPY). Adipokines are relevant to various common diseases such as obesity, diabetes, and cardiovascular disorders. Metabolism is regulated by the collaborative actions of several types of endocrine cells including adipokine secreting adipocytes, insulin secreting pancreatic beta cells, catecholamine secreting chromaffin cell in adrenal gland. In this study, we investigate the crosstalks and regulatory mechanism that leptin and resistin has on catecholamines and the chromaffin cells in adrenal glands, and their feedback reactions upon themselves. We found catecholamines directly suppress endogenous leptin and resistin secretion in adipocytes through α adrenergic receptor, and the decreased leptin and resistin has a reduced effect of stimulating catecholamines – a negative feedback loop. Leptin, as well as resistin regulation of catecholamines was found to be dependent on multiple pathways. Preliminary results showing NPY – a newly found adipocyte-secreted cytokine- and its effects regulating other adipokines secreted was also presented. In this study, we focus mainly on adipokines in terms of cellular and hormonal secretions, vesicular trafficking, intracellular localization, signals transduction, and interactions with various secretory factors. Studies of adipokines’ secretion and their crosstalks may lead to new insights into energy metabolism and metabolic homeostasis. The study offers the hope of finding new therapies and treatments for metabolic disorders such as obesity and diabetes. Bachelor of Engineering (Chemical and Biomolecular Engineering) 2010-05-21T03:56:32Z 2010-05-21T03:56:32Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/39026 en Nanyang Technological University 77 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Chemical engineering::Biotechnology
spellingShingle DRNTU::Engineering::Chemical engineering::Biotechnology
Ong, Jun Wei.
The crosstalks between adipocytes and other endocrine cells.
description Adipocytes were traditionally thought as a passive depot of energy (fat). It has recently been recognized that adipocytes are pivotal endocrine cells secreting a spectrum of important hormones called adipokines, including leptin, resistin and neuropeptide-Y (NPY). Adipokines are relevant to various common diseases such as obesity, diabetes, and cardiovascular disorders. Metabolism is regulated by the collaborative actions of several types of endocrine cells including adipokine secreting adipocytes, insulin secreting pancreatic beta cells, catecholamine secreting chromaffin cell in adrenal gland. In this study, we investigate the crosstalks and regulatory mechanism that leptin and resistin has on catecholamines and the chromaffin cells in adrenal glands, and their feedback reactions upon themselves. We found catecholamines directly suppress endogenous leptin and resistin secretion in adipocytes through α adrenergic receptor, and the decreased leptin and resistin has a reduced effect of stimulating catecholamines – a negative feedback loop. Leptin, as well as resistin regulation of catecholamines was found to be dependent on multiple pathways. Preliminary results showing NPY – a newly found adipocyte-secreted cytokine- and its effects regulating other adipokines secreted was also presented. In this study, we focus mainly on adipokines in terms of cellular and hormonal secretions, vesicular trafficking, intracellular localization, signals transduction, and interactions with various secretory factors. Studies of adipokines’ secretion and their crosstalks may lead to new insights into energy metabolism and metabolic homeostasis. The study offers the hope of finding new therapies and treatments for metabolic disorders such as obesity and diabetes.
author2 Chen Peng
author_facet Chen Peng
Ong, Jun Wei.
format Final Year Project
author Ong, Jun Wei.
author_sort Ong, Jun Wei.
title The crosstalks between adipocytes and other endocrine cells.
title_short The crosstalks between adipocytes and other endocrine cells.
title_full The crosstalks between adipocytes and other endocrine cells.
title_fullStr The crosstalks between adipocytes and other endocrine cells.
title_full_unstemmed The crosstalks between adipocytes and other endocrine cells.
title_sort crosstalks between adipocytes and other endocrine cells.
publishDate 2010
url http://hdl.handle.net/10356/39026
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