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Title: | Lack of direct action of D-fenfluramine on arcuate preproNPY mRNA levels in the rat. | Austin Authors: | O'Shea, R D;Gundlach, Andrew L | Affiliation: | University of Melbourne, Department of Medicine, Austin and Heidelberg Repatriation Hospitals, Victoria, Australia | Issue Date: | 27-Oct-1994 | Publication information: | Neuroreport; 5(16): 2113-6 | Abstract: | Hypothalamic neuropeptide Y (NPY) and 5-hydroxytryptamine (5-HT) may interact to regulate food intake. This study investigated the effects of the 5-HT reuptake blocker and secretagogue D-fenfluramine (D-FEN) on preproNPY mRNA abundance in the hypothalamic arcuate nucleus (ARC) of free-feeding and food-deprived (FD) rats in two treatment regimens. ARC preproNPY mRNA levels were significantly increased in FD rats, to the same extent as in combined FD/D-FEN animals. D-FEN treatments producing different-sized reductions in food intake (and body weight) produced corresponding changes in ARC preproNPY mRNA abundance. These findings suggest that ARC preproNPY mRNA levels are not directly altered by D-FEN, and that D-FEN-induced anorexia does not involve effects on the hypothalamic NPY system at the level of NPY gene transcription. | Gov't Doc #: | 7865757 | URI: | https://ahro.austin.org.au/austinjspui/handle/1/13146 | Journal: | Neuroreport | URL: | https://pubmed.ncbi.nlm.nih.gov/7865757 | Type: | Journal Article | Subjects: | Animals Arcuate Nucleus of Hypothalamus.drug effects.metabolism Body Weight.drug effects Eating.drug effects Fenfluramine.pharmacology Male Neuropeptide Y.genetics Protein Precursors.genetics RNA, Messenger.metabolism Rats Rats, Sprague-Dawley |
Appears in Collections: | Journal articles |
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