title: Diabetes mellitus and disturbances in brain connectivity: a bidirectional relationship?
abstract: Diabetes mellitus (DM) is associated with deficits across multiple cognitive domains. The observed impairments in cognitive function are hypothesized to be subserved by alterations in brain structure and function. Several lines of evidence indicate that alterations in glial integrity and function, as well as abnormal synchrony within brain circuits and associated networks, are observed in adults with DM. Microangiopathy and alterations in insulin homeostasis appear to be principal effector systems, although a unitary explanation subsuming the complex etiopathology of white matter in DM is unavailable. A contemporary model of disease pathophysiology for several mental disorders, including but not limited to mood disorders, posits abnormalities in the synchronization of cellular systems in circuits. The observation that similar abnormalities occur in diabetic populations provides the basis for hypothesizing the convergence of pathoetiological factors. Herein, we propose that abnormal structure, function and chemical composition as well as synchrony within and between circuits is an accompaniment of DM and is shared in common with several mental disorders.
authors: Mood Disorders Psychopharmacology Unit (MDPU), University Health Network, University of Toronto, 399 Bathurst Street, MP 9-325, Toronto, ON, M5T 2S8, Canada, rodrigomansur71@uol.com.br.
authors: Rodrigo B
authors: RB
authors: Mansur
authors: Danielle S
authors: DS
authors: Cha
authors: Hanna O
authors: HO
authors: Woldeyohannes
authors: Joanna K
authors: JK
authors: Soczynska
authors: Andre
authors: A
authors: Zugman
authors: Elisa
authors: E
authors: Brietzke
authors: Roger S
authors: RS
authors: McIntyre
mesh_terms: D001921:Brain / Q000473:pathology* / Q000503:physiopathology; D002560:Cerebrovascular Circulation; D003072:Cognition Disorders / Q000209:etiology* / Q000378:metabolism / Q000473:pathology; D063132:Connectome; D003920:Diabetes Mellitus / Q000473:pathology / Q000523:psychology*; D003925:Diabetic Angiopathies / Q000473:pathology / Q000523:psychology; D004569:Electroencephalography; D004734:Energy Metabolism / Q000502:physiology; D005947:Glucose / Q000378:metabolism; D006801:Humans; D006943:Hyperglycemia / Q000523:psychology; D006946:Hyperinsulinism / Q000523:psychology; D007328:Insulin / Q000502:physiology; D007333:Insulin Resistance; D008279:Magnetic Resonance Imaging; D015225:Magnetoencephalography; D001523:Mental Disorders / Q000150:complications; D008954:Models, Biological; D008959:Models, Neurological; D059906:Neuroimaging / Q000379:methods; D009473:Neuronal Plasticity; D059409:Stroke, Lacunar / Q000209:etiology / Q000523:psychology; D066127:White Matter / Q000473:pathology
chemical_list: D007328:Insulin; D005947:Glucose