Universität zu Köln

Lakshminarasimha, Amrutha Bagivalu, Page-McCaw, Patrick, Moeckel, Diana, Gremse, Felix and Michel, Maximilian (2021). Leptin system loss of function in the absence of obesity in zebrafish. J. Endocrinol., 251 (1). S. 41 - 53. BRISTOL: BIOSCIENTIFICA LTD. ISSN 1479-6805

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Abstract

The leptin system plays a crucial role in the regulation of appetite and energy homeostasis in vertebrates. While the phenotype of morbid obesity due to leptin (LEP) or leptin receptor (LEPR) loss of function is well established in mammals, evidence in fish is controversial, questioning the role of leptin as the vertebrate adipostat. Here we report on three (Lepr) loss of function (LOF) and one leptin loss of function alleles in zebrafish. In order to demonstrate that the Lepr LOF alleles cannot transduce a leptin signal, we measured socs3a transcription after i.p. leptin which is abolished by Lepr LOF. None of the Lepr/Lepa LOF alleles leads to obesity/a body growth phenotype. We explore possible reasons leading to the difference in published results and find that even slight changes in background genetics such as inbreeding siblings and cousins can lead to significant variance in growth.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lakshminarasimha, Amrutha Bagivalu UNSPECIFIED UNSPECIFIED UNSPECIFIED Page-McCaw, Patrick UNSPECIFIED UNSPECIFIED UNSPECIFIED Moeckel, Diana UNSPECIFIED UNSPECIFIED UNSPECIFIED Gremse, Felix UNSPECIFIED UNSPECIFIED UNSPECIFIED Michel, Maximilian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-583211
DOI:	10.1530/JOE-21-0037
Journal or Publication Title:	J. Endocrinol.
Volume:	251
Number:	1
Page Range:	S. 41 - 53
Date:	2021
Publisher:	BIOSCIENTIFICA LTD
Place of Publication:	BRISTOL
ISSN:	1479-6805
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GLUCOSE-HOMEOSTASIS; RECEPTOR; DEFICIENCY; EVOLUTION Multiple languages Endocrinology & Metabolism Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58321