PMID- 38050866 OWN - NLM STAT- MEDLINE DCOM- 20240202 LR - 20240410 IS - 1469-445X (Electronic) IS - 0958-0670 (Print) IS - 0958-0670 (Linking) VI - 109 IP - 2 DP - 2024 Feb TI - Glucose metabolism and autonomic function in healthy individuals and patients with type 2 diabetes mellitus at rest and during exercise. PG - 214-226 LID - 10.1113/EP091444 [doi] AB - Autonomic dysfunction is a common complication of type 2 diabetes mellitus (T2DM). However, the character of dysfunction varies in different reports. Differences in measurement methodology and complications might have influenced the inconsistent results. We sought to evaluate comprehensively the relationship between abnormal glucose metabolism and autonomic function at rest and the response to exercise in healthy individuals and T2DM patients. We hypothesized that both sympathetic and parasympathetic indices would decrease with the progression of abnormal glucose metabolism in individuals with few complications related to high sympathetic tone. Twenty healthy individuals and 11 T2DM patients without clinically evident cardiovascular disease other than controlled hypertension were examined. Resting muscle sympathetic nerve activity (MSNA), heart rate variability, spontaneous cardiovagal baroreflex sensitivity (CBRS), sympathetic baroreflex sensitivity and the MSNA response to handgrip exercise were measured. Resting MSNA was lower in patients with T2DM than in healthy control subjects (P = 0.011). Resting MSNA was negatively correlated with haemoglobin A(1c) in all subjects (R = -0.45, P = 0.024). The parasympathetic components of heart rate variability and CBRS were negatively correlated with glycaemic/insulin indices in all subjects and even in the control group only (all, P < 0.05). In all subjects, the MSNA response to exercise was positively correlated with fasting blood glucose (R = 0.69, P < 0.001). Resting sympathetic activity and parasympathetic modulation of heart rate were decreased in relationship to abnormal glucose metabolism. Meanwhile, the sympathetic responses to handgrip were preserved in diabetics. The responses were correlated with glucose/insulin parameters throughout diabetic and control subjects. These results suggest the importance of a comprehensive assessment of autonomic function in T2DM. CI - (c) 2023 The Authors. Experimental Physiology published by John Wiley & Sons Ltd on behalf of The Physiological Society. FAU - Hamaoka, Takuto AU - Hamaoka T AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. FAU - Leuenberger, Urs A AU - Leuenberger UA AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. FAU - Drew, Rachel C AU - Drew RC AUID- ORCID: 0000-0001-8001-1946 AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. AD - Department of Exercise and Health Sciences, University of Massachusetts Boston, Boston, Massachusetts, USA. FAU - Murray, Matthew AU - Murray M AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. FAU - Blaha, Cheryl AU - Blaha C AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. FAU - Luck, Jonathan Carter AU - Luck JC AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. FAU - Sinoway, Lawrence I AU - Sinoway LI AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. FAU - Cui, Jian AU - Cui J AD - Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA. LA - eng GR - R01 HL144781/NH/NIH HHS/United States GR - R01 HL141198/HL/NHLBI NIH HHS/United States GR - UL1 TR002014/NH/NIH HHS/United States GR - UL1 TR002014/TR/NCATS NIH HHS/United States GR - R01 HL164571/HL/NHLBI NIH HHS/United States GR - R01HL164571/NH/NIH HHS/United States GR - R01 HL144781/HL/NHLBI NIH HHS/United States GR - R01 HL141198/NH/NIH HHS/United States PT - Journal Article DEP - 20231205 PL - England TA - Exp Physiol JT - Experimental physiology JID - 9002940 RN - IY9XDZ35W2 (Glucose) RN - 0 (Insulins) SB - IM MH - Humans MH - *Diabetes Mellitus, Type 2 MH - Hand Strength MH - Blood Pressure/physiology MH - Sympathetic Nervous System/physiology MH - Baroreflex/physiology MH - Heart Rate/physiology MH - Glucose MH - *Insulins MH - Muscle, Skeletal/physiology PMC - PMC10841625 MID - NIHMS1942866 OTO - NOTNLM OT - heart rate variability OT - muscle sympathetic nerve activity OT - type 2 diabetes mellitus COIS- The authors declare no conflicts of interest. EDAT- 2023/12/05 17:44 MHDA- 2024/02/02 06:43 PMCR- 2023/12/05 CRDT- 2023/12/05 07:13 PHST- 2023/08/03 00:00 [received] PHST- 2023/10/31 00:00 [accepted] PHST- 2024/02/02 06:43 [medline] PHST- 2023/12/05 17:44 [pubmed] PHST- 2023/12/05 07:13 [entrez] PHST- 2023/12/05 00:00 [pmc-release] AID - EPH13454 [pii] AID - 10.1113/EP091444 [doi] PST - ppublish SO - Exp Physiol. 2024 Feb;109(2):214-226. doi: 10.1113/EP091444. Epub 2023 Dec 5.