PMID- 19931559 OWN - NLM STAT- MEDLINE DCOM- 20100427 LR - 20220311 IS - 1872-6321 (Electronic) IS - 0165-0173 (Linking) VI - 62 IP - 2 DP - 2010 Mar TI - Molecular mechanisms underlying anorexia nervosa: focus on human gene association studies and systems controlling food intake. PG - 147-64 LID - 10.1016/j.brainresrev.2009.10.007 [doi] AB - Anorexia nervosa (AN) is a complex multi-factorial disease with high heritability. The psychological AN symptoms are poorly connected with specific molecular mechanisms. Here we review the molecular basis of AN with the focus on human genetic association studies; we put these in the experimental biological context with emphasis on molecular systems controlling food intake and body weight in a direct or indirect manner. We systematically searched for human genetic studies related to AN and grouped data into main categories/systems reflecting their major known roles: (1) Systems related to mental disorders (serotonin, brain-derived neurotrophic factor (BDNF), norepinephrine (NE), glutamate (NMDA) receptor and SK3 channel, KCCN3). (2) Hunger regulatory systems (leptin, AGRP, MSH, melanocortin 4 receptor (MC4R), NPY, ghrelin, cholecystokinin (CCK). (3) Feeding motivation- and reward-related systems (opioids, OPRD1, cannabinoids (anandamide (AEA), THC, CBR1), dopamine, DRD2, DRD3, DRD4, catecholamine-O-methyl transferase (COMT). (4) Systems regulating energy metabolism (uncoupling proteins 2 and 3 (UCP2 and UCP3). (5) Neuroendocrine systems with emphasis on sex hormones (estrogen receptor-beta (ESR2). (6) The immune system and inflammatory response (tumor necrosis factor-alpha (TNF-alpha)). Overall, we found that in total 175 association studies have been performed on AN cohorts on 128 different polymorphisms related to 43 genes. We review the strongest associations, identify some genes that have an important role in regulating BMI whose possible relationship to AN has not been investigated and discuss the potential targets for pharmacological interventions. FAU - Rask-Andersen, Mathias AU - Rask-Andersen M AD - Department of Neuroscience, Functional Pharmacology, Uppsala University, BMC, Box 593, 75124 Uppsala, Sweden. FAU - Olszewski, Pawel K AU - Olszewski PK FAU - Levine, Allen S AU - Levine AS FAU - Schioth, Helgi B AU - Schioth HB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20091118 PL - Netherlands TA - Brain Res Rev JT - Brain research reviews JID - 101300366 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Gonadal Steroid Hormones) RN - 0 (Neurotransmitter Agents) RN - 0 (Peptides) SB - IM MH - Anorexia Nervosa/*genetics/*physiopathology MH - Appetite Regulation/*genetics MH - Body Weight/genetics MH - Brain-Derived Neurotrophic Factor/genetics/metabolism MH - Energy Metabolism/genetics MH - *Genetic Predisposition to Disease MH - Genome-Wide Association Study/*methods MH - Gonadal Steroid Hormones/genetics/metabolism MH - Humans MH - Neurotransmitter Agents/genetics/metabolism MH - Peptides/genetics/metabolism RF - 111 EDAT- 2009/11/26 06:00 MHDA- 2010/04/28 06:00 CRDT- 2009/11/26 06:00 PHST- 2009/07/28 00:00 [received] PHST- 2009/10/08 00:00 [revised] PHST- 2009/10/08 00:00 [accepted] PHST- 2009/11/26 06:00 [entrez] PHST- 2009/11/26 06:00 [pubmed] PHST- 2010/04/28 06:00 [medline] AID - S0165-0173(09)00123-4 [pii] AID - 10.1016/j.brainresrev.2009.10.007 [doi] PST - ppublish SO - Brain Res Rev. 2010 Mar;62(2):147-64. doi: 10.1016/j.brainresrev.2009.10.007. Epub 2009 Nov 18.