PMID: 9536887Apr 16, 1998Paper

Capillaries in the epithelium of pterygium

The British Journal of Ophthalmology
P Seifert, W Sekundo

Abstract

To present new morphological observations of intraepithelial capillaries in pterygium and to provide some explanations for this phenomenon. The ultrastructural features of pterygia from 26 patients were examined. Surgically excised tissue was processed for conventional light and transmission electron microscopy. Individual capillaries within the epithelium of the anterior half towards the head of pterygia were identified in 11 specimens out of 26 pterygia examined (42.3%). The perivascular connective tissue of the intraepithelial capillaries contained fibroblasts, collagen fibrils, and elastin-like material. Epithelial cells surrounding these capillaries showed defects in the basal lamina in contrast with the continuous basal lamina of the endothelium. In the intercellular space of the epithelium an amorphous substance, occasional fibroblast processes, and collagen fibrils were frequently observed. Capillaries in the epithelium of pterygia are rare, but not exceptional. The ingrowth of these vessels from the stroma into the epithelium can be interpreted as a reaction to hypoxia or deficiency of any other substance transported via the bloodstream. Apparently, the perivascular connective tissue can be used by ingrowing fibroblast...Continue Reading

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Citations

Apr 20, 2010·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·W SekundoC Cursiefen
Aug 9, 2011·Journal of Huazhong University of Science and Technology. Medical Sciences = Hua Zhong Ke Ji Da Xue Xue Bao. Yi Xue Ying De Wen Ban = Huazhong Keji Daxue Xuebao. Yixue Yingdewen Ban·Jie ZhangXin Liu
Jan 24, 2002·Cornea·Cordelia M L ChanDonald T H Tan
Aug 26, 1999·The British Journal of Ophthalmology·N Di GirolamoD Wakefield
Nov 16, 2013·Annals of Biomedical Engineering·Kinon Chen, James D Weiland
Feb 12, 2008·The Ocular Surface·Jeanie ChuiMinas T Coroneo
Sep 18, 2009·International Journal of Experimental Pathology·Domenico RibattiPaola Sirigu
Apr 20, 2004·Progress in Retinal and Eye Research·Nick Di GirolamoDenis Wakefield
Nov 20, 2014·Clinical & Translational Oncology : Official Publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico·A I Karseladze
Jun 24, 2008·Current Eye Research·Marina PapadiaMaurizio Rolando
Jul 20, 2007·Journal of Cellular and Molecular Medicine·Domenico RibattiPaola Sirigu
Nov 11, 2006·Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde·Yavuz TekeliogluEsin Yulug
Oct 19, 2016·Eye & Contact Lens·Linda RoseYousuf Qaseem
Jan 6, 2000·Current Opinion in Ophthalmology·M T CoroneoD Wakefield
Jan 9, 2003·Current Eye Research·Arie L MarcovichYaron Bar-Dayan

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