PMID- 17156152 OWN - NLM STAT- MEDLINE DCOM- 20070227 LR - 20191210 IS - 1398-5647 (Print) IS - 1398-5647 (Linking) VI - 8 IP - 6 DP - 2006 Dec TI - Panic comorbidity with bipolar disorder: what is the manic-panic connection? PG - 648-64 AB - CONTEXT: Bipolar/panic comorbidity has been observed in clinical, community and familial samples. As both are episodic disorders of affect regulation, the common pathophysiological mechanism is likely to involve deficits in amygdala-mediated, plasticity-dependent emotional conditioning. EVIDENCE: Neuronal genesis and synaptic remodeling occur in the amygdala; bipolar and panic disorders have both been associated with abnormality in the amygdala and related structures, as well as in molecules that modulate plasticity, such as serotonin, norepinephrine, brain-derived neurotrophic factor (BDNF) and corticotrophin releasing factor (CRF). These biological elements are involved in behavioral conditioning to threat and reward. MODEL: Panic attacks resemble the normal acute fear response, but are abnormally dissociated from any relevant threat. Abnormal reward-seeking behavior is central to both manic and depressive syndromes. Appetites can be elevated or depressed; satisfaction of a drive may fail to condition future behavior. These dissociations may be the result of deficits in plasticity-dependent processes of conditioning within different amygdala subregions. CONCLUSIONS: This speculative model may be a useful framework with which to connect molecular, cellular, anatomic and behavioral processes in panic and bipolar disorders. The primary clinical implication is that behavioral treatment may be critical to restore function in some bipolar patients who respond only partially to medications. FAU - MacKinnon, Dean F AU - MacKinnon DF AD - Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Meyer 3-181, 600 N. Wolfe Street, Baltimore, MD 21287, USA. dmackin@jhmi.edu FAU - Zamoiski, Rachel AU - Zamoiski R LA - eng PT - Journal Article PT - Review PL - Denmark TA - Bipolar Disord JT - Bipolar disorders JID - 100883596 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 333DO1RDJY (Serotonin) RN - 9015-71-8 (Corticotropin-Releasing Hormone) RN - WI4X0X7BPJ (Hydrocortisone) RN - X4W3ENH1CV (Norepinephrine) SB - IM MH - Affect MH - Amygdala/metabolism/physiopathology MH - Bipolar Disorder/*epidemiology/metabolism/physiopathology MH - Brain-Derived Neurotrophic Factor/metabolism MH - Comorbidity MH - Conditioning, Psychological MH - Corticotropin-Releasing Hormone/metabolism MH - Fear MH - Humans MH - Hydrocortisone/metabolism MH - Hypothalamo-Hypophyseal System/physiopathology MH - Neuronal Plasticity/physiology MH - Norepinephrine/metabolism MH - Panic Disorder/*epidemiology/metabolism MH - Pituitary-Adrenal System/physiopathology MH - Serotonin/metabolism MH - Stress, Psychological/epidemiology/psychology MH - Synapses/physiology RF - 268 EDAT- 2006/12/13 09:00 MHDA- 2007/02/28 09:00 CRDT- 2006/12/13 09:00 PHST- 2006/12/13 09:00 [pubmed] PHST- 2007/02/28 09:00 [medline] PHST- 2006/12/13 09:00 [entrez] AID - BDI356 [pii] AID - 10.1111/j.1399-5618.2006.00356.x [doi] PST - ppublish SO - Bipolar Disord. 2006 Dec;8(6):648-64. doi: 10.1111/j.1399-5618.2006.00356.x.