PMID- 15026569 OWN - NLM STAT- MEDLINE DCOM- 20040615 LR - 20231103 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 101 IP - 16 DP - 2004 Apr 20 TI - Activation of human medial prefrontal cortex during autonomic responses to hypoglycemia. PG - 6217-21 AB - Studies in humans implicate the medial prefrontal cortex (MPFC) in complex cognitive and emotional states. We measured regional cerebral blood flow (CBF) four times each during euglycemia (5.2 +/- 0.2 mmol/liter) and hypoglycemia (3.0 +/- 0.3 mmol/liter) in nine normal human volunteers. Autonomic responses during hypoglycemia were manifested by increases in neurogenic symptoms, heart rate, and plasma levels of epinephrine, norepinephrine, and pancreatic polypeptide. Typical symptoms of hypoglycemia were mild, and none reflected evidence of cognitive or emotional stress. Quantitative CBF fell 6-8% in the cerebrum, brainstem, and cerebellum. Analysis of regional CBF differences identified neuronal activation during hypoglycemia in bilateral MPFC (areas 24 and 32) and bilateral thalamus. These results provide evidence that the MPFC participates in the autonomic responses to simple physiological stimuli in humans. FAU - Teves, Denise AU - Teves D AD - Division of Endocrinology, Metabolism, and Lipid Research of the Department of Internal Medicine, Washington University School of Medicine, Campus Box 8127, 660 South Euclid Avenue, St. Louis, MO 63110, USA. FAU - Videen, Tom O AU - Videen TO FAU - Cryer, Philip E AU - Cryer PE FAU - Powers, William J AU - Powers WJ LA - eng GR - R01 DK027085/DK/NIDDK NIH HHS/United States GR - RR00036/RR/NCRR NIH HHS/United States GR - R37 DK027085/DK/NIDDK NIH HHS/United States GR - M01 RR000036/RR/NCRR NIH HHS/United States GR - DK27085/DK/NIDDK NIH HHS/United States GR - R01 NS041771/NS/NINDS NIH HHS/United States GR - NS41771/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. DEP - 20040316 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 SB - IM CIN - Proc Natl Acad Sci U S A. 2004 Apr 27;101(17):6333-4. PMID: 15096592 MH - Adolescent MH - Adult MH - Autonomic Nervous System/diagnostic imaging/*physiopathology MH - Cerebrovascular Circulation MH - Female MH - Humans MH - Hypoglycemia/*physiopathology MH - Magnetic Resonance Imaging MH - Male MH - Prefrontal Cortex/blood supply/diagnostic imaging/*physiopathology MH - Tomography, Emission-Computed PMC - PMC395949 EDAT- 2004/03/18 05:00 MHDA- 2004/06/16 05:00 PMCR- 2004/10/20 CRDT- 2004/03/18 05:00 PHST- 2004/03/18 05:00 [pubmed] PHST- 2004/06/16 05:00 [medline] PHST- 2004/03/18 05:00 [entrez] PHST- 2004/10/20 00:00 [pmc-release] AID - 0307048101 [pii] AID - 1016217 [pii] AID - 10.1073/pnas.0307048101 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2004 Apr 20;101(16):6217-21. doi: 10.1073/pnas.0307048101. Epub 2004 Mar 16.