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Exhaled nitric oxide

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296: 336: 91: 22: 370:). The fraction of eNO is also flow-dependent (higher at lower flow rates and vice versa), so measurements are normally measured at 50 ml/s. Age or height could also considerably confound eNO values in children. The magnitude of these effects lies in the order of 10%, so even single cut-off values might be useful. 299:
An experimental setup used to measure the fraction of exhaled nitric oxide (FeNO) in human breath samples. The subject blows into the tube (1) after a mouthpiece (2) has been connected to it. The wires on the side are part of the system that measures parameters like breath velocity, while the exhaled
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have looked at whether tailoring asthma therapy based on eNO values is better than conventional care, in which therapy is gauged by symptoms and the results of lung function tests. To date, the results in both adults and children have been modest and this technique can not be universally recommended.
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The subject can exhale directly into a measurement device ('online' technique), or into a reservoir that can afterwards be connected to the analyser ('offline' technique). With the former technique, the early and later NO in the breath sample can be analysed separately. The test requires little
76:) is a promising biomarker for the diagnosis, follow-up and as a guide to therapy in adults and children with asthma. The breath test has recently become available in many well-equipped hospitals in developed countries, although its exact role remains unclear. 140:
It was initially thought that exhaled NO derived mostly from the sinuses, which contain high levels of NO. It has subsequently been shown that the lower airways contribute most of the exhaled NO, and that contamination from the sinuses is minimal.
362:. However, several major features influence the reference values. Men have higher eNO values than women. Smoking notoriously lowers eNO values, and even former smoking status can influence results. The levels are higher in people with an 1633:
American Thoracic Society, European Respiratory Society (April 2005). "ATS/ERS recommendations for standardized procedures for the online and offline measurement of exhaled lower respiratory nitric oxide and nasal nitric oxide, 2005".
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De Prins S, Marcucci F, Sensi L, Van de Mieroop E, Nelen V, Nawrot TS, et al. (September 2014). "Exhaled nitric oxide and nasal tryptase are associated with wheeze, rhinitis and nasal allergy in primary school children".
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Van Amsterdam JG, Verlaan BP, Van Loveren H, Elzakker BG, Vos SG, Opperhuizen A, Steerenberg PA (1999). "Air pollution is associated with increased level of exhaled nitric oxide in nonsmoking healthy subjects".
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Travers J, Marsh S, Aldington S, Williams M, Shirtcliffe P, Pritchard A, et al. (August 2007). "Reference ranges for exhaled nitric oxide derived from a random community survey of adults".
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Shaw DE, Berry MA, Thomas M, Green RH, Brightling CE, Wardlaw AJ, Pavord ID (August 2007). "The use of exhaled nitric oxide to guide asthma management: a randomized controlled trial".
2464: 242:) or disease progression. Early findings indicate a possible role for eNO in predicting the response to inhaled glucocorticoids and the degree of airway obstruction reversibility. 3063: 2949: 2882: 2749: 1680:
Buchvald F, Baraldi E, Carraro S, Gaston B, De Jongste J, Pijnenburg MW, et al. (June 2005). "Measurements of exhaled nitric oxide in healthy subjects age 4 to 17 years".
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Gustafsson LE, Leone AM, Persson MG, Wiklund NP, Moncada S (December 1991). "Endogenous nitric oxide is present in the exhaled air of rabbits, guinea pigs and humans".
845:"Management of asthma based on exhaled nitric oxide in addition to guideline-based treatment for inner-city adolescents and young adults: a randomised controlled trial" 2709: 3161: 3068: 3001: 2832: 2699: 2962: 2908: 2771: 2758: 990:
Hunt JF, Fang K, Malik R, Snyder A, Malhotra N, Platts-Mills TA, Gaston B (March 2000). "Endogenous airway acidification. Implications for asthma pathophysiology".
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have higher eNO levels than other people. Their levels also rise together with other clinical and laboratory parameters of asthma (for example, the amount of
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Shin HW, Shelley DA, Henderson EM, Fitzpatrick A, Gaston B, George SC (March 2007). "Airway nitric oxide release is reduced after PBS inhalation in asthma".
2867: 2469: 2822: 2474: 2298: 2293: 216:. This means that a positive eNO test might be useful to rule in a diagnosis of asthma; however, a negative test might not be as useful to rule it out. 3107: 2704: 2444: 2313: 2303: 2719: 2714: 2544: 3125: 2035: 2143: 540:"Effect of an inducible nitric oxide synthase inhibitor on differential flow-exhaled nitric oxide in asthmatic patients and healthy volunteers" 1266: 1118: 539: 2862: 2847: 2625: 2605: 2574: 2148: 2128: 2123: 2118: 1580:
Bos I, De Boever P, Vanparijs J, Pattyn N, Panis LI, Meeusen R (March 2013). "Subclinical effects of aerobic training in urban environment".
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The fraction of eNO has been found to be a better test to identify asthmatics than basic lung function testing (for airway obstruction). Its
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Exhaled NO is minimally increased in chronic obstructive pulmonary disease, but levels may rise in sudden worsenings of the disease (
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Although iNOS is thought to be the main contributor to exhaled NO in asthmatics, studies in mice also point to a role for nNOS.
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NO was first detected in exhaled breath samples in 1991. In 1992, NO was voted molecule of the year by the scientific journal
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The National Institute of Clinical Excellence (NICE) in the UK have published guidance on available measuring devices:
712:"Sputum eosinophils and exhaled nitric oxide during late asthmatic reaction in patients with western red cedar asthma" 167: 1438:"Subclinical responses in healthy cyclists briefly exposed to traffic-related air pollution: an intervention study" 2459: 423: 266: 187: 3244: 1807:
Turner S (May 2007). "The role of exhaled nitric oxide in the diagnosis, management and treatment of asthma".
1209: 179: 671:"Daily home measurements of exhaled nitric oxide in asthmatic children during natural birch pollen exposure" 3362: 3332: 2318: 631: 3180: 2991: 2204: 1294: 1146: 567: 239: 213: 205: 197:
It has also been noted that factors other than inflammation can increase eNO levels, for example airway
2328: 262: 258: 1717:"Methodological issues related to exhaled nitric oxide measurement in children aged four to six years" 1070:"Exhaled nitric oxide rather than lung function distinguishes preschool children with probable asthma" 843:
Szefler SJ, Mitchell H, Sorkness CA, Gergen PJ, O'Connor GT, Morgan WJ, et al. (September 2008).
2214: 2102: 1533:"Ambient and microenvironmental particles and exhaled nitric oxide before and after a group bus trip" 446:
Pijnenburg MW, De Jongste JC (February 2008). "Exhaled nitric oxide in childhood asthma: a review".
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Today, NO is not only used in breath tests but also as a therapeutic agent for conditions such as
3261: 2789: 2521: 2209: 1351:"Use of exhaled nitric oxide in predicting response to inhaled corticosteroids for chronic cough" 284:
eNO has also been associated with wheeze, rhinitis and nasal allergy in primary school children.
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Jacobs L, Nawrot TS, de Geus B, Meeusen R, Degraeuwe B, Bernard A, et al. (October 2010).
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respectively, whereas iNOS' action can be induced in states like inflammation (for example, by
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Turner S (February 2008). "Exhaled nitric oxide in the diagnosis and management of asthma".
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De Sanctis GT, Mehta S, Kobzik L, Yandava C, Jiao A, Huang PL, Drazen JM (October 1997).
130:. As such, eNO (also known as FeNO "fractional exhaled nitric oxide") has been dubbed an 50: 1894: 1453: 581:
De Sanctis GT, MacLean JA, Hamada K, Mehta S, Scott JA, Jiao A, et al. (May 1999).
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Lane C, Knight D, Burgess S, Franklin P, Horak F, Legg J, et al. (September 2004).
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Exposure to air pollution has been associated with decreased, and increased eNO levels.
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Children with cystic fibrosis have been found to have low eNO levels. In subjects with
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The role for eNO in other conditions is even less well established compared to asthma.
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Petsky HL, Kew KM, Turner C, Chang AB (September 2016). Cochrane Airways Group (ed.).
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coordination from the subject, and children older than 4 can be tested successfully.
313: 305: 235:), studies have looked at whether eNO can be used in the diagnosis of chronic cough. 2020: 1793: 1750: 1251: 1210:"Exhaled nitric oxide levels in patients with atopic cough and cough variant asthma" 1194: 1054: 1038: 829: 786: 647: 475: 3077: 2671: 2398: 2349: 2229: 1999: 1991: 1961: 1939: 1898: 1851: 1816: 1773: 1728: 1689: 1663: 1643: 1619: 1597: 1589: 1552: 1544: 1505: 1467: 1457: 1402: 1362: 1321: 1278: 1229: 1221: 1174: 1130: 1089: 1081: 1034: 999: 962: 958: 954: 913: 909: 905: 864: 856: 809: 764: 723: 682: 643: 632:"Contribution of type I NOS to expired gas NO and bronchial responsiveness in mice" 602: 594: 551: 510: 502: 455: 403: 321: 115: 1308:
Sato S, Saito J, Sato Y, Ishii T, Xintao W, Tanino Y, et al. (October 2008).
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Fujimura M, Ohkura N, Abo M, Furusho S, Waseda Y, Ichikawa Y, Hara J (May 2008).
1178: 1003: 728: 711: 399: 183: 111: 3285: 2944: 2837: 2734: 2434: 2421: 2408: 2054: 1820: 1777: 1693: 1326: 1309: 813: 753:"Use of exhaled nitric oxide measurements to guide treatment in chronic asthma" 687: 670: 328:. When this returns to its ground state, it emits light in quantities that are 250: 246: 193: 69: 1647: 1509: 3346: 3226: 2975: 2784: 2413: 2393: 2388: 2373: 383: 329: 325: 228: 175: 1995: 1980:"Exhaled nitric oxide measurements: clinical application and interpretation" 1903: 1878: 1085: 598: 506: 398:. After scientists realised that NO played a biological role, its role as a 25:
Chemical formula of nitric oxide (NO) together with its molecular size (115
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Adar SD, Adamkiewicz G, Gold DR, Schwartz J, Coull BA, Suh H (April 2007).
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Miedinger D, Chhajed PN, Tamm M, Stolz D, Surber C, Leuppi JD (June 2007).
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Petsky HL, Kew KM, Chang AB (November 2016). Cochrane Airways Group (ed.).
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cGMP preferring PDE inhibitors (e.g., sildenafil, paraxanthine, tadalafil)
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The upper normal level of eNO in different studies ranges from 20 to 30
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combustion, was thought only to play a role the detrimental effects of
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Taylor DR, Pijnenburg MW, Smith AD, De Jongste JC (September 2006).
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Smith AD, Cowan JO, Brassett KP, Herbison GP, Taylor DR (May 2005).
126:). In inflammation, several cells use iNOS to produce NO, including 3296: 3252: 3238: 3153: 3055: 2744: 2635: 2182: 2073: 1391: 171: 65: 34: 21: 3216: 3082: 2595: 2590: 2539: 2358: 2353: 2279: 2199: 2188: 1067: 668: 198: 103: 72:
types in an inflammatory response. The fraction of exhaled NO (FE
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in Sweden were the first to report increased eNO in asthmatics.
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could also feature increased eNO. Low levels have been found in
114:), and neuronal (nNOS). The latter two are constantly active in 3312: 3208: 3102: 2665: 1977: 1928:"Increased amount of nitric oxide in exhaled air of asthmatics" 1068:
Malmberg LP, Pelkonen AS, Haahtela T, Turpeinen M (June 2003).
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evernoa medical device for measurement of exhaled nitric oxide
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Vahlkvist S, Sinding M, Skamstrup K, Bisgaard H (June 2006).
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Brindicci C, Ito K, Barnes PJ, Kharitonov SA (August 2007).
537: 3190: 3117: 2691: 1579: 1530: 709: 253:) not due to cystic fibrosis, high levels have been found. 182:. Furthermore, drugs used to treat asthma (such as inhaled 1766:
American Journal of Respiratory and Critical Care Medicine
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American Journal of Respiratory and Critical Care Medicine
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American Journal of Respiratory and Critical Care Medicine
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American Journal of Respiratory and Critical Care Medicine
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Obata H, Dittrick M, Chan H, Chan-Yeung M (March 1999).
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The most widely used technique to measure eNO is with a
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NO is used as a diagnostic test of the response of the
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Nitroxyl anion (NO; oxonitrate(1-), hyponitrite anion)
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Methylamine hexamethylene methylamine/NO (MAHMA/NO)
1926:Alving K, Weitzberg E, Lundberg JM (October 1993). 1844:
Biochemical and Biophysical Research Communications
1348: 989: 231:(it may even be the sole manifestation, such as in 166:). In conditions that trigger inflammation such as 1349:Hahn PY, Morgenthaler TY, Lim KG (November 2007). 1307: 1167:Current Opinion in Allergy and Clinical Immunology 316:reaction. The NO in the breath sample reacts with 2379:Amyl nitrite (isoamyl nitrite, isopentyl nitrite) 3344: 1265:Oh MJ, Lee JY, Lee BJ, Choi DC (November 2008). 2240:Naproxcinod (nitronaproxen; AZD-3582, HCT-3012) 1675: 1673: 1160: 1158: 1156: 1682:The Journal of Allergy and Clinical Immunology 940: 675:The Journal of Allergy and Clinical Immunology 2656:N-Acetyl-N-acetoxy-4-chlorobenzenesulfonamide 2215:Ethylene glycol dinitrate (EGDN; nitroglycol) 2036: 1488: 1429: 1119:"Diagnostic tests for asthma in firefighters" 394:showed that nitric oxide was the long sought 1800: 1757: 1714: 1708: 1670: 1626: 1342: 1301: 1264: 1258: 1201: 1153: 1110: 1061: 1018: 983: 836: 378:Until the 1980s, nitric oxide, a product of 1919: 1870: 1835: 1582:Medicine and Science in Sports and Exercise 947:The Cochrane Database of Systematic Reviews 898:The Cochrane Database of Systematic Reviews 793: 744: 703: 662: 574: 531: 482: 439: 2043: 2029: 1573: 623: 2399:Isobutyl nitrite (2-methylpropyl nitrite) 2309:Nitroglycerin (glyceryl trinitrate (GTN)) 2003: 1943: 1902: 1732: 1601: 1556: 1471: 1461: 1325: 1233: 1093: 966: 917: 868: 768: 727: 686: 606: 514: 290: 98:In humans, nitric oxide is produced from 1876: 334: 294: 89: 20: 16:Breath test for respiratory inflammation 2475:S-Nitrosocysteine (SNC, CysNO, SNO-Cys) 2465:S-Nitroso-N-valerylpenicillamine (SNVP) 1524: 281:(agents that relax the blood vessels). 3345: 2460:S-Nitroso-N-acetylpenicillamine (SNAP) 2334:Sodium trioxodinitrate (Angeli's salt) 1806: 1164: 110:(NOS): inducible (iNOS), endothelial ( 2024: 349:https://www.nice.org.uk/guidance/dg12 3295:non-selective PDE inhibitors (e.g., 2079:Nitric oxide (NO; nitrogen monoxide) 587:The Journal of Experimental Medicine 406:became clear from abundant studies. 300:gas is taken to a FeNO analyzer (3). 2319:Pentaerithrityl tetranitrate (PETN) 2205:Diethylene glycol dinitrate (DEGDN) 1809:Mini Reviews in Medicinal Chemistry 1715:Napier E, Turner SW (August 2005). 757:The New England Journal of Medicine 428:acute respiratory distress syndrome 396:endothelium-derived relaxing factor 219: 13: 3224:Indirect/downstream NO modulators: 2992:Asymmetric dimethylarginine (ADMA) 2101: 1971: 636:The American Journal of Physiology 353: 168:upper respiratory tract infections 14: 3374: 3022:Nitroarginine methyl ester (NAME) 2485:S-Nitrosoglutathione (GSNO, SNOG) 2455:S-Nitroso-N-acetylcysteine (SNAC) 2329:Propylene glycol dinitrate (PGDN) 2084:Nitrosonium (NO; nitrosyl cation) 1537:Environmental Health Perspectives 448:Clinical and Experimental Allergy 366:constitution (a tendency towards 1932:The European Respiratory Journal 1498:Archives of Environmental Health 1226:10.1111/j.1440-1843.2008.01273.x 716:The European Respiratory Journal 460:10.1111/j.1365-2222.2007.02897.x 415:. In 1993, researchers from the 188:leukotriene receptor antagonists 2550:Diethylenetriamine/NO (DETA/NO) 1385: 1039:10.1152/japplphysiol.01012.2006 934: 885: 648:10.1152/ajplung.1997.273.4.L883 424:pulmonary arterial hypertension 267:pulmonary arterial hypertension 227:Since asthma can be a cause of 2750:N-(1-Iminoethyl)-L-ornithine ( 959:10.1002/14651858.CD011439.pub2 910:10.1002/14651858.CD011440.pub2 144: 94:Three-dimensional model of NO. 1: 3333:Receptor/signaling modulators 3002:Guanidinoethyldisulfide (GED) 2220:Isosorbide mononitrate (ISMN) 2210:Erythritol tetranitrate (ETN) 1877:Koshland DE (December 1992). 1027:Journal of Applied Physiology 861:10.1016/S0140-6736(08)61448-8 433: 332:to the amount of exhaled NO. 180:bronchial hyperresponsiveness 2470:S-Nitrosocaptopril (SNO-Cap) 2299:Nitroflurbiprofen (HCT-1026) 2294:Nitroatorvastatin (NCX-6560) 1945:10.1183/09031936.93.06091368 1856:10.1016/0006-291X(91)91268-H 1594:10.1249/MSS.0b013e31827767fc 1407:10.3109/1354750x.2014.937362 1179:10.1097/ACI.0b013e3282f3b4b0 1004:10.1164/ajrccm.161.3.9911005 729:10.1183/09031936.99.13348999 390:. In 1987, experiments with 7: 2945:Aminoguanidine (pimagedine) 2838:Aminoguanidine (pimagedine) 2735:Aminoguanidine (pimagedine) 2499:N-Nitroso compounds (e.g., 2314:Nitropravastatin (NCX-6550) 2225:Isosorbide dinitrate (ISDN) 269:. In the latter condition, 210:bronchial challenge testing 41:(eNO) can be measured in a 10: 3379: 3231:AT-II receptor antagonists 2976:Nitroarginine (NNA, NOARG) 2813:1-Amino-2-hydroxyguanidine 2785:Nitroarginine (NNA, NOARG) 2532:Sodium nitroprusside (SNP) 1879:"The molecule of the year" 1821:10.2174/138955707780619635 1778:10.1164/rccm.200609-1346OC 1694:10.1016/j.jaci.2005.03.020 1327:10.1016/j.rmed.2008.04.018 814:10.1164/rccm.200610-1427OC 688:10.1016/j.jaci.2006.03.018 373: 263:bronchopulmonary dysplasia 259:primary ciliary dyskinesia 190:) also reduce eNO levels. 83: 79: 3326: 3143: 3116: 3054: 2984: 2935: 2803: 2690: 2681: 2664: 2181: 2092: 2064: 1648:10.1164/rccm.200406-710ST 1510:10.1080/00039899909602496 149: 2710:3-Chloro-5-nitroindazole 2545:Diethylamine/NO (DEA/NO) 2517:Metal nitrosyl complexes 2445:S-Nitrosoalbumin (SNALB) 2139:Cinaciguat (BAY 58-2667) 3302:PDE9 inhibitors (e.g., 2790:Pentamidine isethionate 2700:3-Bromo-7-nitroindazole 2587:Heterocyclic compounds: 2111:Activators/stimulators: 1996:10.1136/thx.2005.056093 1904:10.1126/science.1470903 1355:Mayo Clinic Proceedings 1086:10.1136/thorax.58.6.494 599:10.1084/jem.189.10.1621 507:10.1136/thx.2003.014894 3259:L-Type calcium channel 1463:10.1186/1476-069X-9-64 340: 301: 291:Measurement techniques 108:nitric oxide synthases 95: 51:respiratory conditions 30: 2863:Cindunistat (SD-6010) 2818:2-Ethylaminoguanidine 2575:Spermine/NO (SPER/NO) 2372:O-Nitroso compounds ( 1721:Pediatric Pulmonology 1283:10.1378/chest.07-2541 1135:10.1378/chest.06-2218 556:10.1378/chest.06-3046 426:and possibly for the 338: 298: 170:or the inhalation of 93: 86:nitric oxide synthase 24: 3249:receptor antagonists 2922:Ronopterin (VAS-203) 2621:Molsidomine (SIN-10) 2542:(diazeniumdiolates): 2522:Roussin's black salt 2235:Mannitol hexanitrate 1442:Environmental Health 1314:Respiratory Medicine 770:10.1056/NEJMoa043596 417:Karolinska Institute 233:cough-variant asthma 68:produced by certain 39:exhaled nitric oxide 3363:Respiratory therapy 2616:Linsidomine (SIN-1) 2513:Nitrosyl compounds: 2480:S-Nitrosodiclofenac 2450:S-Nitrosated AR545C 2435:S-Nitroso compounds 1895:1992Sci...258.1861K 1454:2010EnvHe...9...64J 312:; this is called a 240:acute exacerbations 2527:Roussin's red salt 2384:Cyclohexyl nitrite 2275:Nipradilol (K-351) 1734:10.1002/ppul.20249 1367:10.4065/82.11.1350 341: 302: 275:pulmonary arteries 96: 64:(NO) is a gaseous 31: 3340: 3339: 3165: 3156: 3139: 3138: 3072: 3050: 3049: 2970: 2966: 2957: 2953: 2950:N-(1-Iminoethyl)- 2916: 2912: 2903: 2899: 2896:N-(1-Iminoethyl)- 2890: 2886: 2883:N-(1-Iminoethyl)- 2823:2-Iminopiperidine 2779: 2775: 2766: 2762: 2753: 2675: 2404:Isopropyl nitrite 2350:Nitroso compounds 2192: 2177: 2176: 998:(3 Pt 1): 694–9. 855:(9643): 1065–72. 392:coronary arteries 388:respiratory tract 360:parts per billion 314:chemiluminescence 306:chemical reaction 208:is comparable to 116:endothelial cells 53:characterized by 3370: 3266:dihydropyridines 3166:-arginine (NOHA) 3163: 3154: 3108:alpha aminoacids 3078:chlorogenic acid 3073:-arginine (NOHA) 3070: 2968: 2964: 2955: 2951: 2914: 2910: 2901: 2897: 2888: 2884: 2777: 2773: 2764: 2760: 2751: 2705:3-Chloroindazole 2688: 2687: 2679: 2678: 2669: 2367: 2366: 2304:Nitrofluvastatin 2288: 2287: 2230:Itramin tosilate 2186: 2099: 2098: 2045: 2038: 2031: 2022: 2021: 2017: 2007: 1966: 1965: 1947: 1923: 1917: 1916: 1906: 1874: 1868: 1867: 1839: 1833: 1832: 1804: 1798: 1797: 1761: 1755: 1754: 1736: 1712: 1706: 1705: 1677: 1668: 1667: 1630: 1624: 1623: 1605: 1577: 1571: 1570: 1560: 1549:10.1289/ehp.9386 1528: 1522: 1521: 1492: 1486: 1485: 1475: 1465: 1433: 1427: 1426: 1389: 1383: 1382: 1377:. Archived from 1346: 1340: 1339: 1329: 1305: 1299: 1298: 1293:. Archived from 1262: 1256: 1255: 1237: 1205: 1199: 1198: 1162: 1151: 1150: 1145:. Archived from 1114: 1108: 1107: 1097: 1065: 1059: 1058: 1022: 1016: 1015: 987: 981: 980: 970: 938: 932: 931: 921: 889: 883: 882: 872: 840: 834: 833: 797: 791: 790: 772: 748: 742: 741: 731: 707: 701: 700: 690: 666: 660: 659: 627: 621: 620: 610: 578: 572: 571: 566:. Archived from 535: 529: 528: 518: 486: 480: 479: 443: 404:neurotransmitter 322:nitrogen dioxide 229:chronic coughing 220:Other conditions 212:, although less 3378: 3377: 3373: 3372: 3371: 3369: 3368: 3367: 3343: 3342: 3341: 3336: 3322: 3286:PDE5 inhibitors 3248: 3212: 3199: 3135: 3112: 3046: 2980: 2931: 2799: 2725:7-Nitroindazole 2720:6-Nitroindazole 2715:5-Nitroindazole 2668: 2660: 2437:(thionitrites): 2365: 2362: 2361: 2360: 2324:Propatylnitrate 2286: 2283: 2282: 2281: 2185: 2173: 2088: 2060: 2049: 1974: 1972:Further reading 1969: 1924: 1920: 1875: 1871: 1840: 1836: 1805: 1801: 1762: 1758: 1713: 1709: 1678: 1671: 1631: 1627: 1578: 1574: 1529: 1525: 1493: 1489: 1434: 1430: 1390: 1386: 1347: 1343: 1306: 1302: 1263: 1259: 1206: 1202: 1163: 1154: 1115: 1111: 1066: 1062: 1023: 1019: 988: 984: 953:(5): CD011439. 939: 935: 904:(9): CD011440. 890: 886: 841: 837: 798: 794: 763:(21): 2163–73. 749: 745: 708: 704: 667: 663: 628: 624: 593:(10): 1621–30. 579: 575: 536: 532: 487: 483: 444: 440: 436: 400:cell signalling 376: 356: 354:Reference range 293: 222: 194:Clinical trials 184:glucocorticoids 152: 147: 88: 82: 75: 17: 12: 11: 5: 3376: 3366: 3365: 3360: 3355: 3338: 3337: 3327: 3324: 3323: 3321: 3320: 3310: 3307: 3300: 3293: 3283: 3273: 3256: 3246: 3242: 3227:ACE inhibitors 3220: 3219: 3214: 3210: 3206: 3201: 3197: 3193: 3188: 3183: 3178: 3169: 3168: 3159: 3147: 3145: 3141: 3140: 3137: 3136: 3134: 3133: 3128: 3122: 3120: 3114: 3113: 3111: 3110: 3105: 3100: 3095: 3090: 3085: 3080: 3075: 3066: 3060: 3058: 3052: 3051: 3048: 3047: 3045: 3044: 3039: 3034: 3029: 3024: 3019: 3014: 3009: 3004: 2999: 2994: 2988: 2986: 2982: 2981: 2979: 2978: 2973: 2960: 2947: 2941: 2939: 2933: 2932: 2930: 2929: 2924: 2919: 2906: 2893: 2880: 2875: 2870: 2865: 2860: 2855: 2850: 2845: 2840: 2835: 2830: 2825: 2820: 2815: 2809: 2807: 2801: 2800: 2798: 2797: 2792: 2787: 2782: 2769: 2756: 2747: 2742: 2737: 2732: 2727: 2722: 2717: 2712: 2707: 2702: 2696: 2694: 2685: 2676: 2662: 2661: 2659: 2658: 2653: 2648: 2643: 2638: 2629: 2628: 2623: 2618: 2613: 2598: 2583: 2582: 2577: 2572: 2567: 2562: 2557: 2552: 2547: 2535: 2534: 2529: 2524: 2509: 2508: 2492: 2487: 2482: 2477: 2472: 2467: 2462: 2457: 2452: 2447: 2442: 2430:-Butyl nitrite 2424: 2422:Pentyl nitrite 2419: 2417:-Butyl nitrite 2411: 2409:Methyl nitrite 2406: 2401: 2396: 2391: 2386: 2381: 2374:alkyl nitrites 2363: 2345: 2344: 2339: 2336: 2331: 2326: 2321: 2316: 2311: 2306: 2301: 2296: 2291: 2284: 2277: 2272: 2267: 2262: 2257: 2252: 2247: 2242: 2237: 2232: 2227: 2222: 2217: 2212: 2207: 2195: 2193: 2179: 2178: 2175: 2174: 2172: 2171: 2162: 2161: 2156: 2151: 2146: 2141: 2136: 2131: 2126: 2121: 2116: 2107: 2105: 2096: 2090: 2089: 2087: 2086: 2081: 2076: 2070: 2068: 2062: 2061: 2048: 2047: 2040: 2033: 2025: 2019: 2018: 1973: 1970: 1968: 1967: 1938:(9): 1368–70. 1918: 1889:(5090): 1861. 1869: 1834: 1799: 1756: 1707: 1669: 1625: 1572: 1523: 1487: 1428: 1384: 1381:on 2007-07-01. 1361:(11): 1350–5. 1341: 1320:(10): 1452–9. 1300: 1297:on 2013-04-15. 1277:(5): 990–995. 1257: 1200: 1152: 1149:on 2013-04-14. 1109: 1060: 1033:(3): 1028–33. 1017: 982: 933: 884: 835: 792: 743: 702: 661: 622: 573: 570:on 2013-04-14. 530: 481: 437: 435: 432: 375: 372: 355: 352: 308:that produces 292: 289: 251:bronchial tree 247:bronchiectasis 221: 218: 154:Patients with 151: 148: 146: 143: 84:Main article: 81: 78: 73: 15: 9: 6: 4: 3: 2: 3375: 3364: 3361: 3359: 3356: 3354: 3351: 3350: 3348: 3335: 3334: 3331: 3325: 3318: 3314: 3311: 3308: 3305: 3301: 3298: 3294: 3291: 3287: 3284: 3281: 3277: 3274: 3271: 3267: 3263: 3260: 3257: 3254: 3250: 3243: 3240: 3236: 3232: 3228: 3225: 3222: 3221: 3218: 3215: 3213: 3207: 3205: 3202: 3200: 3194: 3192: 3189: 3187: 3184: 3182: 3179: 3177: 3174: 3171: 3170: 3167: 3160: 3158: 3152: 3149: 3148: 3146: 3142: 3132: 3129: 3127: 3126:Calmidazolium 3124: 3123: 3121: 3119: 3115: 3109: 3106: 3104: 3101: 3099: 3096: 3094: 3091: 3089: 3086: 3084: 3081: 3079: 3076: 3074: 3067: 3065: 3062: 3061: 3059: 3057: 3053: 3043: 3040: 3038: 3035: 3033: 3030: 3028: 3025: 3023: 3020: 3018: 3015: 3013: 3010: 3008: 3005: 3003: 3000: 2998: 2995: 2993: 2990: 2989: 2987: 2983: 2977: 2974: 2972: 2961: 2959: 2948: 2946: 2943: 2942: 2940: 2938: 2934: 2928: 2925: 2923: 2920: 2918: 2907: 2905: 2894: 2892: 2881: 2879: 2876: 2874: 2871: 2869: 2866: 2864: 2861: 2859: 2856: 2854: 2851: 2849: 2846: 2844: 2841: 2839: 2836: 2834: 2831: 2829: 2826: 2824: 2821: 2819: 2816: 2814: 2811: 2810: 2808: 2806: 2802: 2796: 2793: 2791: 2788: 2786: 2783: 2781: 2770: 2768: 2757: 2755: 2748: 2746: 2743: 2741: 2738: 2736: 2733: 2731: 2728: 2726: 2723: 2721: 2718: 2716: 2713: 2711: 2708: 2706: 2703: 2701: 2698: 2697: 2695: 2693: 2689: 2686: 2684: 2680: 2677: 2673: 2667: 2663: 2657: 2654: 2652: 2649: 2647: 2644: 2642: 2639: 2637: 2634: 2631: 2630: 2627: 2624: 2622: 2619: 2617: 2614: 2612: 2609: 2607: 2602: 2599: 2597: 2594: 2592: 2588: 2585: 2584: 2581: 2578: 2576: 2573: 2571: 2568: 2566: 2563: 2561: 2558: 2556: 2553: 2551: 2548: 2546: 2543: 2541: 2537: 2536: 2533: 2530: 2528: 2525: 2523: 2520: 2518: 2514: 2511: 2510: 2507: 2504: 2502: 2496: 2493: 2491: 2488: 2486: 2483: 2481: 2478: 2476: 2473: 2471: 2468: 2466: 2463: 2461: 2458: 2456: 2453: 2451: 2448: 2446: 2443: 2441: 2438: 2436: 2431: 2429: 2425: 2423: 2420: 2418: 2416: 2412: 2410: 2407: 2405: 2402: 2400: 2397: 2395: 2394:Hexyl nitrite 2392: 2390: 2389:Ethyl nitrite 2387: 2385: 2382: 2380: 2377: 2375: 2369: 2357: 2355: 2351: 2347: 2346: 2343: 2340: 2337: 2335: 2332: 2330: 2327: 2325: 2322: 2320: 2317: 2315: 2312: 2310: 2307: 2305: 2302: 2300: 2297: 2295: 2292: 2290: 2278: 2276: 2273: 2271: 2268: 2266: 2263: 2261: 2258: 2256: 2253: 2251: 2248: 2246: 2243: 2241: 2238: 2236: 2233: 2231: 2228: 2226: 2223: 2221: 2218: 2216: 2213: 2211: 2208: 2206: 2203: 2201: 2197: 2196: 2194: 2190: 2184: 2180: 2170: 2167: 2164: 2163: 2160: 2157: 2155: 2152: 2150: 2147: 2145: 2142: 2140: 2137: 2135: 2132: 2130: 2127: 2125: 2122: 2120: 2117: 2115: 2112: 2109: 2108: 2106: 2104: 2100: 2097: 2095: 2091: 2085: 2082: 2080: 2077: 2075: 2072: 2071: 2069: 2067: 2063: 2059: 2056: 2053: 2046: 2041: 2039: 2034: 2032: 2027: 2026: 2023: 2015: 2011: 2006: 2001: 1997: 1993: 1990:(9): 817–27. 1989: 1985: 1981: 1976: 1975: 1963: 1959: 1955: 1951: 1946: 1941: 1937: 1933: 1929: 1922: 1914: 1910: 1905: 1900: 1896: 1892: 1888: 1884: 1880: 1873: 1865: 1861: 1857: 1853: 1849: 1845: 1838: 1830: 1826: 1822: 1818: 1815:(5): 539–42. 1814: 1810: 1803: 1795: 1791: 1787: 1783: 1779: 1775: 1772:(3): 238–42. 1771: 1767: 1760: 1752: 1748: 1744: 1740: 1735: 1730: 1727:(2): 97–104. 1726: 1722: 1718: 1711: 1703: 1699: 1695: 1691: 1688:(6): 1130–6. 1687: 1683: 1676: 1674: 1665: 1661: 1657: 1653: 1649: 1645: 1642:(8): 912–30. 1641: 1637: 1629: 1621: 1617: 1613: 1609: 1604: 1599: 1595: 1591: 1588:(3): 439–47. 1587: 1583: 1576: 1568: 1564: 1559: 1554: 1550: 1546: 1543:(4): 507–12. 1542: 1538: 1534: 1527: 1519: 1515: 1511: 1507: 1503: 1499: 1491: 1483: 1479: 1474: 1469: 1464: 1459: 1455: 1451: 1447: 1443: 1439: 1432: 1424: 1420: 1416: 1412: 1408: 1404: 1400: 1396: 1388: 1380: 1376: 1372: 1368: 1364: 1360: 1356: 1352: 1345: 1337: 1333: 1328: 1323: 1319: 1315: 1311: 1304: 1296: 1292: 1288: 1284: 1280: 1276: 1272: 1268: 1261: 1253: 1249: 1245: 1241: 1236: 1231: 1227: 1223: 1220:(3): 359–64. 1219: 1215: 1211: 1204: 1196: 1192: 1188: 1184: 1180: 1176: 1172: 1168: 1161: 1159: 1157: 1148: 1144: 1140: 1136: 1132: 1129:(6): 1760–7. 1128: 1124: 1120: 1113: 1105: 1101: 1096: 1091: 1087: 1083: 1079: 1075: 1071: 1064: 1056: 1052: 1048: 1044: 1040: 1036: 1032: 1028: 1021: 1013: 1009: 1005: 1001: 997: 993: 986: 978: 974: 969: 964: 960: 956: 952: 948: 944: 937: 929: 925: 920: 915: 911: 907: 903: 899: 895: 888: 880: 876: 871: 866: 862: 858: 854: 850: 846: 839: 831: 827: 823: 819: 815: 811: 807: 803: 796: 788: 784: 780: 776: 771: 766: 762: 758: 754: 747: 739: 735: 730: 725: 722:(3): 489–95. 721: 717: 713: 706: 698: 694: 689: 684: 681:(6): 1272–6. 680: 676: 672: 665: 657: 653: 649: 645: 642:(4): L883-8. 641: 637: 633: 626: 618: 614: 609: 604: 600: 596: 592: 588: 584: 577: 569: 565: 561: 557: 553: 549: 545: 541: 534: 526: 522: 517: 512: 508: 504: 501:(9): 757–60. 500: 496: 492: 485: 477: 473: 469: 465: 461: 457: 454:(2): 246–59. 453: 449: 442: 438: 431: 429: 425: 420: 418: 414: 413: 407: 405: 402:molecule and 401: 397: 393: 389: 385: 384:air pollution 381: 371: 369: 365: 361: 351: 350: 345: 337: 333: 331: 327: 326:excited state 323: 319: 315: 311: 307: 297: 288: 285: 282: 280: 276: 272: 268: 264: 260: 256: 252: 248: 243: 241: 236: 234: 230: 225: 217: 215: 211: 207: 202: 200: 195: 191: 189: 185: 181: 177: 176:plicatic acid 173: 169: 165: 161: 157: 142: 138: 135: 133: 132:inflammometer 129: 125: 121: 117: 113: 109: 105: 101: 92: 87: 77: 71: 67: 63: 59: 56: 52: 48: 44: 40: 36: 28: 23: 19: 3358:Breath tests 3329: 3328: 3304:paraxanthine 3280:beta blocker 3223: 3172: 3150: 2954:-ornithine ( 2887:-ornithine ( 2632: 2611:Feprosidnine 2606:Sydnonimines 2604: 2589: 2586: 2538: 2515: 2512: 2501:nitrosamines 2498: 2433: 2427: 2414: 2371: 2348: 2198: 2165: 2144:GSK-2181236A 2110: 2052:Nitric oxide 1987: 1983: 1935: 1931: 1921: 1886: 1882: 1872: 1850:(2): 852–7. 1847: 1843: 1837: 1812: 1808: 1802: 1769: 1765: 1759: 1724: 1720: 1710: 1685: 1681: 1639: 1635: 1628: 1585: 1581: 1575: 1540: 1536: 1526: 1504:(5): 331–5. 1501: 1497: 1490: 1445: 1441: 1431: 1401:(6): 481–7. 1398: 1394: 1387: 1379:the original 1358: 1354: 1344: 1317: 1313: 1303: 1295:the original 1274: 1270: 1260: 1217: 1213: 1203: 1170: 1166: 1147:the original 1126: 1122: 1112: 1080:(6): 494–9. 1077: 1073: 1063: 1030: 1026: 1020: 995: 991: 985: 950: 946: 936: 901: 897: 887: 852: 848: 838: 808:(3): 231–7. 805: 801: 795: 760: 756: 746: 719: 715: 705: 678: 674: 664: 639: 635: 625: 590: 586: 576: 568:the original 550:(2): 581–8. 547: 543: 533: 498: 494: 484: 451: 447: 441: 421: 410: 408: 377: 357: 346: 342: 330:proportional 303: 286: 283: 279:vasodilators 270: 244: 237: 226: 223: 203: 192: 153: 139: 136: 131: 97: 62:Nitric oxide 58:inflammation 38: 32: 18: 3317:simvastatin 3151:Precursors: 3088:epicatechin 3012:Indospicine 2967:-arginine ( 2913:-arginine ( 2848:AR-C 102222 2776:-arginine ( 2763:-arginine ( 2626:Sydnonimine 2359:Nitrite (NO 2342:Trolnitrate 2338:Tenitramine 2280:Nitrate (NO 2166:Inhibitors: 2149:Praliciguat 2129:BAY 60-4552 2124:BAY 41-8543 2119:BAY 41-2272 1214:Respirology 1173:(1): 70–6. 380:fossil fuel 255:Sarcoidosis 206:specificity 160:eosinophils 145:Medical use 128:eosinophils 43:breath test 3347:Categories 3290:sildenafil 3270:nifedipine 3173:Cofactors: 3162:N-Hydroxy- 3069:N-Hydroxy- 2858:Canavanine 2853:BYK-191023 2672:inhibitors 2601:REC15/2739 2580:V-PYRRO/NO 2270:Nicorandil 2159:Vericiguat 2058:modulators 1603:1942/14628 1448:(64): 64. 1395:Biomarkers 434:References 100:L-arginine 49:and other 3330:See also: 3276:Nebivolol 3235:captopril 3157:-Arginine 3098:norvaline 3093:ornithine 3007:GW-273629 2963:N-Methyl- 2909:N-Methyl- 2900:-lysine ( 2772:N-Propyl- 2759:N-Methyl- 2740:ARL-17477 2633:Unsorted: 2183:NO donors 2154:Riociguat 2134:BI-703704 2114:Ataciguat 2055:signaling 1423:207522881 1235:2297/9771 368:allergies 214:sensitive 172:allergens 162:in their 124:cytokines 102:by three 3297:caffeine 3262:blockers 3253:bosentan 3239:losartan 3056:Arginase 3042:VAS-2381 3037:ONO-1714 2985:Unsorted 2745:Indazole 2651:FR146881 2646:FR144220 2636:Cimlanod 2591:Furoxans 2570:PROLI/NO 2540:NONOates 2490:SNO-t-PA 2354:nitrites 2265:NCX-4215 2260:NCX 4040 2255:NCX-4016 2250:NCX-2216 2200:Nitrates 2189:prodrugs 2014:16936238 1829:17504190 1794:23531755 1786:17478616 1751:24859293 1743:15965893 1702:15940124 1656:15817806 1612:23073213 1567:17450216 1518:10501149 1482:20973949 1415:25019424 1375:17976354 1336:18614345 1291:18583518 1252:19895759 1244:18399857 1195:20449485 1187:18188021 1143:17400683 1104:12775859 1055:16813706 1047:17110506 1012:10712309 977:27825189 928:27580628 879:18805335 830:22186959 822:17496226 787:42351261 779:15914548 738:10232414 697:16750986 617:10330441 564:17550932 525:15333851 476:12409719 468:18076708 320:to form 66:molecule 35:medicine 3315:(e.g., 3313:Statins 3288:(e.g., 3264:(e.g., 3251:(e.g., 3233:(e.g., 3083:ginseng 3032:NXN-462 3027:NCX-456 3017:KD-7040 2997:CKD-712 2730:A-84643 2596:Furoxan 2495:SNO-vWF 2245:NCX-466 2094:Targets 2005:2117092 1962:5947308 1954:7507065 1913:1470903 1891:Bibcode 1883:Science 1864:1721811 1664:1883790 1620:5067347 1558:1852653 1473:2984475 1450:Bibcode 1095:1746693 968:6432844 919:6457753 870:2610850 656:9357865 608:2193630 516:1747143 412:Science 386:on the 374:History 271:inhaled 199:acidity 120:neurons 106:called 104:enzymes 80:Biology 3353:Asthma 3144:Others 3103:lysine 2666:Enzyme 2641:FK-409 2555:GLO/NO 2506:SIN-1A 2012:  2002:  1984:Thorax 1960:  1952:  1911:  1862:  1827:  1792:  1784:  1749:  1741:  1700:  1662:  1654:  1618:  1610:  1565:  1555:  1516:  1480:  1470:  1421:  1413:  1373:  1334:  1289:  1250:  1242:  1193:  1185:  1141:  1102:  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Index


pm
medicine
breath test
asthma
respiratory conditions
airway
inflammation
Nitric oxide
molecule
cell
nitric oxide synthase

L-arginine
enzymes
nitric oxide synthases
eNOS
endothelial cells
neurons
cytokines
eosinophils
asthma
eosinophils
sputum
upper respiratory tract infections
allergens
plicatic acid
bronchial hyperresponsiveness
glucocorticoids
leukotriene receptor antagonists

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