PMID- 20110394 OWN - NLM STAT- MEDLINE DCOM- 20110307 LR - 20161125 IS - 1399-3003 (Electronic) IS - 0903-1936 (Linking) VI - 36 IP - 3 DP - 2010 Sep TI - Ventilatory chemoresponsiveness, narcolepsy-cataplexy and human leukocyte antigen DQB1*0602 status. PG - 577-83 LID - 10.1183/09031936.00174609 [doi] AB - We hypothesised that hypocretin (orexin) plays a role in the determination of ventilatory chemosensitivity. 130 patients with narcolepsy-cataplexy (mean +/- SD age 20 +/- 10 yrs, 69% male) and 117 controls (22 +/- 6.9 yrs, 62% male) were recruited and tested for human leukocyte antigen (HLA)-DQB1*0602 status, hyperoxia hypercapnic (change in minute ventilation (deltaV'(E))/carbon dioxide tension (deltaP(CO(2))) L.min(-1).mmHg(-1)) and hypoxic (deltaV'(E) /change in arterial oxygen saturation measured by probe oximetry (deltaS(p,O(2))) L.min(-1) per %S(p,O(2))) responsiveness, and by spirometry. Hypocretin deficiency was determined either by measures of cerebrospinal fluid hypocretin-1 (37 patients) or by positive HLA-DQB1*0602 status. All patients and 49% of controls underwent polysomnography and multiple sleep latency testing. Despite similar spirometric values, patients had a higher apnoea/hypopnoea index (AHI) (2.8 +/- 5.4 versus 0.8 +/- 1.6 h(-1); p = 0.03) and lower minimal oxygen saturation during sleep (87% +/- 7 versus 91 +/- 4%; p = 0.0002), independent of age, sex and body mass index. Patients had depressed hypoxic responsiveness (0.13 +/- 0.09 versus 0.19 +/- 0.13 L.min(-1) per %S(p,O(2)); p<0.0001), independent of AHI, but hypercapnic responsiveness did not differ. Examined by HLA status, positive (26 out of 117) controls had lower hypoxic but similar hypercapnic responsiveness than those marker-negative (0.13 +/- 0.08 versus 0.20 +/- 0.14 L.min(-1) per %S(p,O(2)); p<0.0001). Thus, a lower hypoxic responsiveness in the narcolepsy-cataplexy group is a result of DQB1*0602 status rather than the clinical features of disease. FAU - Han, F AU - Han F AD - Dept of Pulmonary Medicine, The People's Hospital, Beijing University, Beijing 100044, China. hanfang1@hotmail.com FAU - Mignot, E AU - Mignot E FAU - Wei, Y C AU - Wei YC FAU - Dong, S X AU - Dong SX FAU - Li, J AU - Li J FAU - Lin, L AU - Lin L FAU - An, P AU - An P FAU - Wang, L H AU - Wang LH FAU - Wang, J S AU - Wang JS FAU - He, M Z AU - He MZ FAU - Gao, H Y AU - Gao HY FAU - Li, M AU - Li M FAU - Gao, Z C AU - Gao ZC FAU - Strohl, K P AU - Strohl KP LA - eng GR - NIH 23734/PHS HHS/United States GR - Howard Hughes Medical Institute/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20100128 PL - England TA - Eur Respir J JT - The European respiratory journal JID - 8803460 RN - 0 (HCRT protein, human) RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQB1 antigen) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Membrane Glycoproteins) RN - 0 (Neuropeptides) RN - 0 (Orexins) SB - IM MH - Adult MH - Body Mass Index MH - Cataplexy/genetics/*immunology MH - China MH - Female MH - HLA-DQ Antigens/genetics/*physiology MH - HLA-DQ beta-Chains MH - Humans MH - Hypercapnia MH - Hypoxia MH - Intracellular Signaling Peptides and Proteins/metabolism MH - Male MH - Membrane Glycoproteins/genetics/*physiology MH - Narcolepsy/genetics/*immunology MH - Neuropeptides/metabolism MH - Orexins MH - *Respiration MH - Respiratory Function Tests MH - Sleep MH - Sleep Wake Disorders/metabolism EDAT- 2010/01/30 06:00 MHDA- 2011/03/08 06:00 CRDT- 2010/01/30 06:00 PHST- 2010/01/30 06:00 [entrez] PHST- 2010/01/30 06:00 [pubmed] PHST- 2011/03/08 06:00 [medline] AID - 09031936.00174609 [pii] AID - 10.1183/09031936.00174609 [doi] PST - ppublish SO - Eur Respir J. 2010 Sep;36(3):577-83. doi: 10.1183/09031936.00174609. Epub 2010 Jan 28.