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Histology, histochemistry and ultrastructure of cornea of domestic pigs (Sus scrofa domesticus).

التفاصيل البيبلوغرافية
العنوان: Histology, histochemistry and ultrastructure of cornea of domestic pigs (Sus scrofa domesticus).
المؤلفون: Barhaiya RK; Department of Veterinary Anatomy, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, India., Kumar P; Department of Veterinary Anatomy, College of Veterinary Science, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India.
المصدر: Anatomia, histologia, embryologia [Anat Histol Embryol] 2024 Jul; Vol. 53 (4), pp. e13068.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Wiley-Blackwell Country of Publication: Germany NLM ID: 7704218 Publication Model: Print Cited Medium: Internet ISSN: 1439-0264 (Electronic) Linking ISSN: 03402096 NLM ISO Abbreviation: Anat Histol Embryol Subsets: MEDLINE
أسماء مطبوعة: Publication: Berlin : Wiley-Blackwell
Original Publication: Berlin, Parey.
مواضيع طبية MeSH: Cornea*/ultrastructure , Cornea*/anatomy & histology , Microscopy, Electron, Transmission*/veterinary , Microscopy, Electron, Scanning*/veterinary , Sus scrofa*/anatomy & histology, Animals ; Corneal Stroma/ultrastructure ; Endothelium, Corneal/ultrastructure ; Endothelium, Corneal/anatomy & histology ; Epithelium, Corneal/ultrastructure ; Descemet Membrane/ultrastructure ; Descemet Membrane/anatomy & histology ; Swine/anatomy & histology ; Bowman Membrane/ultrastructure ; Bowman Membrane/anatomy & histology
مستخلص: A comprehensive light and ultrastructural examination of the cornea in Domestic Pigs (Sus scrofa domesticus) revealed four distinct layers: the anterior epithelium, corneal stroma, Descemet's membrane and endothelium. Although Bowman's layer was not distinctly identified through histology, histochemical analysis indicated the presence of a rudimentary Bowman's layer, possibly vestigial from evolution. Scanning electron microscopy of the outer corneal surface unveiled two cell types, characterized by micro-projections, with light cells exhibiting shorter, thicker projections compared to dark cells. Examination of the inner surface via scanning electron microscopy demonstrated an endothelial layer devoid of cilia and microvilli, yet faint round to oval elevations were observed, potentially representing cell nuclei. Transmission electron microscopy unveiled that basal cells of the anterior epithelium closely adhered to the basement membrane, featuring half desmosomes along the basal surface. These basal cells extensively interconnected through interdigitations and a few desmosomes. The superficial cell layer consisted of a few rows of closely attached flat cells, forming a leak-proof layer with zona occludens. The outermost cells of this layer displayed fine projections to enhance the surface area, facilitating tear film distribution. At lower magnification, Transmission electron microscopy of the corneal stroma revealed alternating light and dark bands, with light bands representing transverse sections of collagen fibril lamellae and dark bands corresponding to longitudinal or oblique sections. Spindle-shaped keratocytes (fibroblasts) were identified as the primary stromal cells, intermingled between the lamellae, and featured long processes in close contact with neighbouring keratocytes. Overall, the histomorphology of the pig cornea resembles that of the human cornea except indistinct Bowman's membrane. This detailed understanding of the normal corneal structure in pigs hold great significance for biomedical research, providing a valuable reference for studies involving this animal model.
(© 2024 Wiley‐VCH GmbH. Published by John Wiley & Sons Ltd.)
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فهرسة مساهمة: Keywords: cornea; histochemistry; histology; pig; ultrastructure
تواريخ الأحداث: Date Created: 20240605 Date Completed: 20240605 Latest Revision: 20240605
رمز التحديث: 20240606
DOI: 10.1111/ahe.13068
PMID: 38837763
قاعدة البيانات: MEDLINE
الوصف
تدمد:1439-0264
DOI:10.1111/ahe.13068