Binding sites for human interleukin 1α, gamma interferon and tumor necrosis factor on cultured fibroblasts of normal cornea and keratoconus
作者:
FabreE. J.,
BureauJ.,
PouliquenY.,
LoransG.,
期刊:
Current Eye Research
(Taylor Available online 1991)
卷期:
Volume 10,
issue 7
页码: 585-592
ISSN:0271-3683
年代: 1991
DOI:10.3109/02713689109013850
出版商: Taylor&Francis
数据来源: Taylor
摘要:
Keratoconus, a bilateral corneal disease, is characterized by modifications in corneal shape and thinning of the stroma. From a biochemical point of view, a decrease in collagen content, probably due to the high collagenase activity, has been reported.Gamma Interferon (γ-IFN), Tumor Necrosis Factor (TNF), and Interleukin 1 (IL1) are peptide regulatory factors involved in immunological responses, but they also play a role in the synthesis of collagen and prostaglandin E2 by fibroblasts.In these experiments, we have determined the number of membrane binding sites forγ-IFN, TNF, and IL1, and the dissociation constant (Kd) for each radiolabelled ligand. All experiments were carried out on cultured corneal stromal cells.Data from normal human corneas and from keratoconus were compared. No differences were found concerning y-IFN and TNF binding sites between normal corneas and keratoconus, while fibroblasts from keratoconus proved to bear four fold more IL1 binding sites than normal fibroblasts, with similar Kd.
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