{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T06:55:22Z","timestamp":1792652122566,"version":"4.5.0"},"reference-count":43,"publisher":"Oxford University Press (OUP)","issue":"6","license":[{"start":{"date-parts":[[2003,9,1]],"date-time":"2003-09-01T00:00:00Z","timestamp":1062374400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2003,9,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>We examined the in vivo immune response of infants to natural respiratory syncytial virus (RSV) infection through analysis of cytokine levels in nasal lavage fluid and stimulated peripheral blood mononuclear cells. Eighty-eight babies with at least one parent with atopy and asthma were prospectively studied through their first winter. Twenty-eight infants had an upper respiratory tract infection where RSV was detected, of whom nine developed signs of acute bronchiolitis. Nasal lavage specimens were assayed for interferon-\u03b3, interleukin (IL)-4, IL-10, and IL-12 and the RSV load determined by quantitative polymerase chain reaction. Messenger RNA (mRNA) was extracted from stimulated peripheral blood mononuclear cells and interferon-\u03b3, IL-4, IL-12, and IL-18 mRNA levels determined by polymerase chain reaction. Cytokine profiles were analyzed in relation to clinical outcome. The IL-4\/interferon-\u03b3 ratio for infants with acute bronchiolitis was elevated in nasal lavage fluid on both Days 1\u20132 (p = 0.014) and Days 5\u20137 (p = 0.001) of the illness compared with infants with upper respiratory tract infection alone. Those with acute bronchiolitis demonstrated a higher IL-10\/IL-12 ratio (p = 0.0015) on Days 1\u20132. IL-18 mRNA levels were reduced (p = 0.019) and the IL-4\/interferon-\u03b3 ratio elevated (p = 0.01) in stimulated peripheral blood mononuclear cells from infants with acute bronchiolitis. There was no difference in initial RSV load. These data strongly implicate excess type 2 and\/or deficient type 1 immune responses in the pathogenesis of RSV bronchiolitis.<\/jats:p>","DOI":"10.1164\/rccm.200210-1148oc","type":"journal-article","created":{"date-parts":[[2003,6,3]],"date-time":"2003-06-03T21:21:44Z","timestamp":1054675304000},"page":"633-639","source":"Crossref","is-referenced-by-count":309,"title":["Type 1 and Type 2 Cytokine Imbalance in Acute Respiratory Syncytial Virus Bronchiolitis"],"prefix":"10.1093","volume":"168","author":[{"given":"Julian P.","family":"Legg","sequence":"first","affiliation":[{"name":"Infection, Inflammation and Repair Division, University of Southampton, Southampton; and Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College of Science Technology & Medicine, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Imran R.","family":"Hussain","sequence":"additional","affiliation":[{"name":"Infection, Inflammation and Repair Division, University of Southampton, Southampton; and Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College of Science Technology & Medicine, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jill A.","family":"Warner","sequence":"additional","affiliation":[{"name":"Infection, Inflammation and Repair Division, University of Southampton, Southampton; and Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College of Science Technology & Medicine, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sebastian L.","family":"Johnston","sequence":"additional","affiliation":[{"name":"Infection, Inflammation and Repair Division, University of Southampton, Southampton; and Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College of Science Technology & Medicine, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John O.","family":"Warner","sequence":"additional","affiliation":[{"name":"Infection, Inflammation and Repair Division, University of Southampton, Southampton; and Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College of Science Technology & Medicine, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2003,9,15]]},"reference":[{"key":"2026032606463447100_BIB1"},{"key":"2026032606463447100_BIB2","first-page":"629","volume-title":"Pediatr Infect Dis J","year":"2002"},{"key":"2026032606463447100_BIB3"},{"key":"2026032606463447100_BIB4","first-page":"16","volume-title":"Arch Dis Child","year":"1995"},{"key":"2026032606463447100_BIB5","first-page":"S59","volume-title":"Am J Respir Crit Care Med","year":"1995"},{"key":"2026032606463447100_BIB6","first-page":"138","volume-title":"Immunol 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