PMID- 12885583 OWN - NLM STAT- MEDLINE DCOM- 20030912 LR - 20190910 IS - 0197-4580 (Print) IS - 0197-4580 (Linking) VI - 24 IP - 5 DP - 2003 Sep TI - Age-related changes in cerebral lactate metabolism in sleep-disordered breathing. PG - 753-60 AB - Thirty-one patients, aged 22-71 years, with nocturnal apneic episodes and/or habitual snoring were studied with magnetic resonance spectroscopy (MRS) and diagnostic polysomnography separately to determine whether accumulation of lactate caused by cerebral hypoxia during sleep is associated with sleep-disordered breathing (SDB), aging and co-morbidities related to SDB. Eight proton magnetic resonance spectra for sleep and two for periods of arousal were obtained from the right centrum semiovale. All patients were evaluated for the presence or absence of co-morbidities including hypertension, cardiac disease, diabetes mellitus, and hyperlipidemia. Significant lactate signals were found in seven patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) during sleep periods, and none during periods of arousal. Aging was significantly related to the presence or absence of significant lactate signals during sleep periods as determined by logistic regression analysis (beta=0.2480; 95% confidence interval, 0.0905-0.5094; P=0.0001). Apnea index (AI), apnea-hypopnea index (AHI), and minimum value of peripheral oxyhemoglobin saturation each significantly interacted with age (P=0.0081, 0.0284, and 0.0302, respectively). Our findings suggest that SDB combined with aging is related to accumulation of lactate during sleep. FAU - Kamba, Masayuki AU - Kamba M AD - Ogawa Laboratories for Brain Function Research, Hamano Life Science Research Foundation, 12 Daikyo-cho, Shinjuku-ku, 160-0015, Tokyo, Japan. kamba@hlsrf.or.jp FAU - Inoue, Yuichi AU - Inoue Y FAU - Higami, Shigeru AU - Higami S FAU - Suto, Yuji AU - Suto Y LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Neurobiol Aging JT - Neurobiology of aging JID - 8100437 RN - 33X04XA5AT (Lactic Acid) SB - IM MH - Adult MH - Aged MH - Aging/*physiology MH - Apnea/metabolism MH - Body Mass Index MH - Cerebral Cortex/*metabolism/pathology MH - Female MH - Humans MH - Lactic Acid/*metabolism MH - Magnetic Resonance Spectroscopy/instrumentation/methods MH - Male MH - Middle Aged MH - Polysomnography/instrumentation/methods MH - Regression Analysis MH - Sleep Apnea Syndromes/*metabolism/pathology MH - Sleep Stages/physiology EDAT- 2003/07/30 05:00 MHDA- 2003/09/13 05:00 CRDT- 2003/07/30 05:00 PHST- 2003/07/30 05:00 [pubmed] PHST- 2003/09/13 05:00 [medline] PHST- 2003/07/30 05:00 [entrez] AID - S0197458002001914 [pii] AID - 10.1016/s0197-4580(02)00191-4 [doi] PST - ppublish SO - Neurobiol Aging. 2003 Sep;24(5):753-60. doi: 10.1016/s0197-4580(02)00191-4.