Biomaterial Database

Hairless micropig skin. A novel model for studies of cutaneous biology. 1991

R M Lavker, and G Dong, and P S Zheng, and G F Murphy

Department of Dermatology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104.

Reported here is the structural and immunohistochemical similarities between the Yucatan hairless micropig (HMP) skin and that of humans. Hairless micropig skin surface was composed of complex intersecting furrows that created geometric patterns remarkably similar to human skin surface glyphics. The dermal--epidermal interface consisted of undulant downgrowths that interdigitated with dermal papillae. Hairless micropig epidermis contained two morphologically distinct populations of basal keratinocytes (serrated and nonserrated). Similar heterogeneity has been seen only in human epidermis and primate palmar epidermis. Immunohistochemistry revealed that the HMP epidermis is reactive with monoclonal and polyclonal antisera to keratin proteins. Melanocytes reactive with antisera to S-100 protein, as in human skin, also were observed in HMP epidermis. Organization of dermal extracellular matrix, including collagen and elastic fibers, and the organization and reactivity of the microvasculature with antisera to factor VIII, were consistent with human skin. The costicosteroid-induced atrophy and subsequent rebound phenomenon after withdrawal of steroid observed in HMP skin was similar with that observed in humans. It is concluded that HMP skin approximates human skin significantly more precisely than most existing species and is an excellent model for studies of cutaneous physiology and pharmacology.

UI	MeSH Term	Description	Entries
D007150	Immunohistochemistry	Histochemical localization of immunoreactive substances using labeled antibodies as reagents.	Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008854	Microscopy, Electron	Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.	Electron Microscopy
D006651	Histocytochemistry	Study of intracellular distribution of chemicals, reaction sites, enzymes, etc., by means of staining reactions, radioactive isotope uptake, selective metal distribution in electron microscopy, or other methods.	Cytochemistry
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001284	Atrophy	Decrease in the size of a cell, tissue, organ, or multiple organs, associated with a variety of pathological conditions such as abnormal cellular changes, ischemia, malnutrition, or hormonal changes.	Atrophies
D001623	Betamethasone	A glucocorticoid given orally, parenterally, by local injection, by inhalation, or applied topically in the management of various disorders in which corticosteroids are indicated. Its lack of mineralocorticoid properties makes betamethasone particularly suitable for treating cerebral edema and congenital adrenal hyperplasia. (From Martindale, The Extra Pharmacopoeia, 30th ed, p724)	Betadexamethasone,Flubenisolone,Celeston,Celestona,Celestone,Cellestoderm
D012867	Skin	The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
D013552	Swine	Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).	Phacochoerus,Pigs,Suidae,Warthogs,Wart Hogs,Hog, Wart,Hogs, Wart,Wart Hog
D013556	Swine, Miniature	Genetically developed small pigs for use in biomedical research. There are several strains - Yucatan miniature, Sinclair miniature, and Minnesota miniature.	Miniature Swine,Minipigs,Miniature Swines,Minipig,Swines, Miniature