Functional characteristics of connective tissue growth factor on vitreoretinal cells

Takeshi Kita, Yasuaki Hata, Muneki Miura, Shuhei Kawahara, shintaro nakao, Tatsuro Ishibashi

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Connective tissue growth factor (CTGF) level is elevated in eyes with proliferative vitreoretinal diseases, such as proliferative diabetic retinopathy and proliferative vitreoretinopathy (PVR), as we previously reported, but its functional characteristics on vitreoretinal cells are yet to be clarified. In this study, we demonstrated a growthpromoting effect of CTGF on cultured hyalocytes and bovine retinal pigment epithelial cells (BRPEs) with the induction of p44/p42 mitogen-activated protein kinase phosphorylation and [ 3H]thymidine incorporation. CTGF also stimulated the synthesis of fibronectin by hyalocytes and BRPEs without significant effect on collagen gel contraction by these cells. On the other hand, CTGF had no direct effects on the proliferation, migration, or in vitro tube formation by vascular endothelial cells. Nevertheless, CTGF promoted vascular endothelial growth factor (VEGF) gene expression by hyalocytes and BRPEs. Although the concentrations of both CTGF and VEGF in the human vitreous samples with proliferative vitreoretinal diseases were elevated, there was no significant correlation between these concentrations. These findings indicate that CTGF appears to be involved in the formation of proliferative membranes without direct regulation of their cicatricial contraction in the pathogenesis of proliferative vitreoretinal diseases. Whereas CTGF might have no direct effects or minimal effects, if any, on retinal neovascularization, it is possible that CTGF has indirect effects by modulating the expression of VEGF.

Original languageEnglish
Pages (from-to)1421-1428
Number of pages8
JournalDiabetes
Volume56
Issue number5
DOIs
Publication statusPublished - May 1 2007

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Connective Tissue Growth Factor
Retinal Pigments
Epithelial Cells
Vascular Endothelial Growth Factor A
Retinal Neovascularization
Proliferative Vitreoretinopathy
Mitogen-Activated Protein Kinase 1
Diabetic Retinopathy
Fibronectins
Thymidine
Collagen
Endothelial Cells
Gels
Phosphorylation
Gene Expression

All Science Journal Classification (ASJC) codes

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism

Cite this

Functional characteristics of connective tissue growth factor on vitreoretinal cells. / Kita, Takeshi; Hata, Yasuaki; Miura, Muneki; Kawahara, Shuhei; nakao, shintaro; Ishibashi, Tatsuro.

In: Diabetes, Vol. 56, No. 5, 01.05.2007, p. 1421-1428.

Research output: Contribution to journalArticle

Kita, Takeshi ; Hata, Yasuaki ; Miura, Muneki ; Kawahara, Shuhei ; nakao, shintaro ; Ishibashi, Tatsuro. / Functional characteristics of connective tissue growth factor on vitreoretinal cells. In: Diabetes. 2007 ; Vol. 56, No. 5. pp. 1421-1428.
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