PMID- 7657550 OWN - NLM STAT- MEDLINE DCOM- 19951002 LR - 20100324 IS - 0146-0404 (Print) IS - 0146-0404 (Linking) VI - 36 IP - 10 DP - 1995 Sep TI - Increased plasma levels of nerve growth factor in vernal keratoconjunctivitis and relationship to conjunctival mast cells. PG - 2127-32 AB - PURPOSE: To evaluate the nerve growth factor (NGF) plasma concentration in patients with vernal keratoconjunctivitis and to correlate it with the histopathology and immunopathology of the disease. METHODS: An immunoenzymatic assay was performed to measure NGF plasma levels in patients with vernal keratoconjunctivitis and in healthy matched controls. A competitive radioimmunoassay was used to detect eosinophil cationic protein (ECP) and total specific immunoglobulin E (IgE) serum levels. Histologic evaluation was performed in tarsal and bulbar conjunctival biopsies. RESULTS: Plasma levels of NGF were significantly higher (P < 0.001) in patients with vernal keratoconjunctivitis (mean = 8224.47 +/- 7802.53 pg/ml; median = 121 pg/ml) than in controls (mean = 51.68 +/- 5.94 pg/ml; median 42.5 pg/ml). Conjunctival tissue showed a significant increase of mast cells, eosinophils, and lymphocytes in vernal keratoconjunctivitis. A significant correlation was observed between plasma levels of NGF and the number of mast cells in the tarsal conjunctiva (Cc = 0.81; P < 0.005) and bulbar conjunctiva (Cc = 0.77; P < 0.01) of patients with vernal keratoconjunctivitis. No correlation was found between NGF plasma levels and total IgE serum levels in patients with vernal keratoconjunctivitis; NGF plasma levels were inversely related to the number of circulating eosinophils (Cc = -0.61; P < 0.05) and to the increased serum levels of ECP (Cc = -0.71; P < 0.02). CONCLUSIONS: These data represent the first reported evidence of increased NGF plasma levels in an allergic human disease and suggest a possible relationship between this neurotrophic polypeptide and inflammatory cells in vernal keratoconjunctivitis. FAU - Lambiase, A AU - Lambiase A AD - Department of Ophthalmology, University of Rome Tor Vergata, Italy. FAU - Bonini, S AU - Bonini S FAU - Bonini, S AU - Bonini S FAU - Micera, A AU - Micera A FAU - Magrini, L AU - Magrini L FAU - Bracci-Laudiero, L AU - Bracci-Laudiero L FAU - Aloe, L AU - Aloe L LA - eng PT - Journal Article PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 RN - 0 (Blood Proteins) RN - 0 (Eosinophil Granule Proteins) RN - 0 (Inflammation Mediators) RN - 0 (Nerve Growth Factors) RN - 37341-29-0 (Immunoglobulin E) RN - EC 3.1.- (Ribonucleases) SB - IM MH - Adolescent MH - Adult MH - Blood Proteins/analysis MH - Cell Count MH - Child MH - Child, Preschool MH - Conjunctiva/*pathology MH - Conjunctivitis, Allergic/*blood/immunology/pathology MH - Eosinophil Granule Proteins MH - Eosinophils/pathology MH - Female MH - Humans MH - Immunoenzyme Techniques MH - Immunoglobulin E/analysis MH - Inflammation Mediators/analysis MH - Lymphocytes/pathology MH - Male MH - Mast Cells/*pathology MH - Nerve Growth Factors/*blood MH - Radioimmunoassay MH - *Ribonucleases EDAT- 1995/09/01 00:00 MHDA- 1995/09/01 00:01 CRDT- 1995/09/01 00:00 PHST- 1995/09/01 00:00 [pubmed] PHST- 1995/09/01 00:01 [medline] PHST- 1995/09/01 00:00 [entrez] PST - ppublish SO - Invest Ophthalmol Vis Sci. 1995 Sep;36(10):2127-32.