PMID- 14552593 OWN - NLM STAT- MEDLINE DCOM- 20040114 LR - 20190917 IS - 1120-6721 (Print) IS - 1120-6721 (Linking) VI - 13 IP - 7 DP - 2003 Aug-Sep TI - Tumor necrosis factor-alpha (TNF-alpha) in seasonal allergic conjunctivitis and vernal keratoconjunctivitis. PG - 606-10 AB - PURPOSE: To quantify the presence of the proinflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) in allergic conjunctivitis. MATERIALS AND METHODS: Tears and peripheral blood samples were collected from patients with seasonal allergic conjunctivitis (SAC, n=6), vernal keratoconjunctivitis (VKC, n=12), and normal subjects (CT, n=12). From an additional six nonactive allergic patients, tears were collected before and after specific conjunctival allergen challenge (CAC). Upper tarsal conjunctival biopsies were obtained from five CT and five VKC patients. TNF-alpha in tears was measured by enzyme-linked immunoassay and identified in tissues by immunohistochemistry. RESULTS: Tear TNF-alpha levels in VKC patients were significantly increased compared to CT (p=0.03), and were significantly correlated with the severity of the disease. No differences were found between SAC and CT tear samples. TNF-alpha serum levels were higher in VKC than CT, however, this difference was not statistically significant. After CAC, tear TNF-alpha levels were found increased in only one of six patients. In VKC tissues, TNF-alpha positive cells were significantly increased compared to CT (p=0.03). CONCLUSIONS: TNF-alpha may have a significant role in severe forms of allergic conjunctivitis. FAU - Leonardi, A AU - Leonardi A AD - Department of Neuroscience, Ophthalmology and Ocular Inflammation Unit, University of Padova, Padova, Italy. andrea.leonardi@unipd.it FAU - Brun, P AU - Brun P FAU - Tavolato, M AU - Tavolato M FAU - Plebani, M AU - Plebani M FAU - Abatangelo, G AU - Abatangelo G FAU - Secchi, A G AU - Secchi AG LA - eng PT - Comparative Study PT - Journal Article PL - United States TA - Eur J Ophthalmol JT - European journal of ophthalmology JID - 9110772 RN - 0 (Allergens) RN - 0 (Biomarkers) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Adolescent MH - Adult MH - Allergens/adverse effects MH - Biomarkers/analysis MH - Child MH - Conjunctivitis, Allergic/*blood/etiology MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Male MH - Seasons MH - Tears/*metabolism MH - Tumor Necrosis Factor-alpha/*metabolism EDAT- 2003/10/14 05:00 MHDA- 2004/01/15 05:00 CRDT- 2003/10/14 05:00 PHST- 2003/10/14 05:00 [pubmed] PHST- 2004/01/15 05:00 [medline] PHST- 2003/10/14 05:00 [entrez] AID - 10.1177/112067210301300702 [doi] PST - ppublish SO - Eur J Ophthalmol. 2003 Aug-Sep;13(7):606-10. doi: 10.1177/112067210301300702.