Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study

Naib-Majani W, Eltohami I, Wernert N, Watts W, Tschesche H, Pleyer U, Breipohl W (2004)
GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 242(4): 332-338.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Purpose: This study was carried out to monitor the expression of extracellular matrix proteins (ECMs) and metalloproteinases (MMPs) in pterygial tissue. Methods: Twenty primary nasal pterygia were studied by indirect routine immunohistochemistry using 13 different primary antibodies against 8 ECMs (five collagens, fibronectin, heparan sulfate, and laminin) fibroblast growth factor (bFGF), von Willebrand factor (vWF), and 3 MMPs (8, 9, and 13). Secondary antibodies were fluoresceinated. Intensity of reaction on individual sections was graded semi-quantitatively. Results: No expression of collagens I, II, and VII was found. Antibodies against collagen III reacted strongly positively (+++) with the entire pterygial stroma. Collagen IV expression was strongly positive in the wall of pterygial blood vessels, moderately positive (++) in the epithelial basement membrane, and only weakly positive (+) all over the stroma. Antibodies against fibronectin reacted moderately positively with stroma, blood vessel walls and epithelial basement membrane. Heparan sulfate was strongly expressed in the blood vessel walls and epithelial basement membrane. Antibodies against bFGF reacted only with pterygial epithelium. Laminin was strongly expressed in blood vessel wall, moderately (++) in the epithelial basement membrane and weakly over the entire stroma. vWF was strongly positive (+++) with pterygial blood vessel walls. Antibody reactions for MMPs differed. It was strong with pterygial epithelium (MMPs 8, 9 and 13), strong to moderate with pterygial stroma (MMPs 8 and 13 versus 9), and absent to weak with pterygial vascular walls (MMPs 8 and 13 versus 9). Conclusions: This study documents the presence of several ECMs but excludes the expression of others in pterygial tissues. The results especially indicate an active involvement of MMPs 8, 9 and 13 in the pathogenesis of pterygia.
Erscheinungsjahr
Zeitschriftentitel
GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
Band
242
Zeitschriftennummer
4
Seite
332-338
ISSN
eISSN
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Naib-Majani W, Eltohami I, Wernert N, et al. Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study. GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY. 2004;242(4):332-338.
Naib-Majani, W., Eltohami, I., Wernert, N., Watts, W., Tschesche, H., Pleyer, U., & Breipohl, W. (2004). Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study. GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY, 242(4), 332-338. doi:10.1007/s00417-003-0846-y
Naib-Majani, W., Eltohami, I., Wernert, N., Watts, W., Tschesche, H., Pleyer, U., and Breipohl, W. (2004). Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study. GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 242, 332-338.
Naib-Majani, W., et al., 2004. Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study. GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY, 242(4), p 332-338.
W. Naib-Majani, et al., “Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study”, GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY, vol. 242, 2004, pp. 332-338.
Naib-Majani, W., Eltohami, I., Wernert, N., Watts, W., Tschesche, H., Pleyer, U., Breipohl, W.: Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study. GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY. 242, 332-338 (2004).
Naib-Majani, W, Eltohami, I, Wernert, N, Watts, W, Tschesche, Harald, Pleyer, U, and Breipohl, W. “Distribution of extracellular matrix proteins in pterygia: an immunohistochemical study”. GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 242.4 (2004): 332-338.

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