Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Membrane-coating granules

The membrane-coating granules in keratinized epithelia contain electron-dense lipid lamellae [68, 77], and therefore, the intercellular spaces of the stratum corneum are filled with short stacks of lipid lamellae [67, 132], Most of the membrane-coating granules in nonkeratinized epithelia consist of amorphous material [120] however, some studies have shown that a small number of these granules in nonkeratinized epithelia contain lamellae [151]. Therefore,... [Pg.90]

Hayward AF (1976) Ingestion of colloid in a keratinized epithelium and its localization in membrane-coating granules. J Anat 121 313-321... [Pg.105]

Lavker RM (1976) Membrane coating granules The fate of the discharged lamellae. J Ultrastruct Res 55 79-86... [Pg.106]

Matoltsy AG, Parakkal PF (1965) Membrane-coating granules of keratinizing epithelia. J Cell Biol 24 297-307... [Pg.107]

Meyer W, Schlesinger C, Neurand K (1987) Membrane-coating granules (MCGs) in porcine epidermis. Schweiz Arch Tierheilkd 129 133-137... [Pg.107]

Squier CA (1977) Membrane coating granules in nonkeratinizing oral epithelium. J Ultrastruct Res 60 212-220... [Pg.109]

Squier CA (1982) Zinc iodide-osmium staining of membrane-coating granules in keratinized and non-keratinized mammalian oral epithelium. Arch Oral Biol 27 377-382... [Pg.109]

The main resistance to drug permeation is caused by the variant patterns of differentiation exhibited by the keratinized and nonkeratinized epithelia. As mucosal cells leave the basal layer, they differentiate and become flattened. Accumulation of lipids and proteins also occurs. This further culminates in a portion of the lipid that concentrates into small organelles called membrane-coating granules (MCGs). [Pg.179]

The stratum spinosum layer contains abundant desmosomes, lipid lamellar bodies (Odland bodies), keratinosomes, and membrane-coating granules (MCGs). Lipid lamellar bodies are parallel stacks of polar lipid-enriched disks enclosed in a trilaminar membrane.48 The lamellar bodies also contain hydrolytic enzymes capable of converting polar lipids such as glycolipids and phospholipids to nonpolar products such as ceramides and free fatty acids, respectively.46,49... [Pg.53]

Tezuka, T. Electron-microscopic changes in xerosis senile epidermis. Its abnormal membrane-coating granule formation. Dermatol. 166 57-61 (1983). [Pg.106]

Werner, Y., Lindberg, M., and Forslind, B. Membrane-coating granules in dry non-exzematous skin of patients with atopic dermatitis. Acta. Derm. Venereol. (Stockh.) 67 385-390 (1987). [Pg.106]

However, it should also be remembered that the intercellular space of the epithelial cells of the oral cavity contains lipidic material, deposited from the membrane coating granules. Lipidic moieties (depending, as always, on their physicochemical properties) may be able to permeate through this lipidic environment between the cells, thereby being absorbed via the paracellular route. [Pg.174]

Figure 8. These electron micrographs by Robert Scoggins show an intact membrane-coating granule (xl96fi00) and another granule (xlOSfiOO) within an invagination of the trilaminar cell membrane (44). Figure 8. These electron micrographs by Robert Scoggins show an intact membrane-coating granule (xl96fi00) and another granule (xlOSfiOO) within an invagination of the trilaminar cell membrane (44).
Matoltsy, A. G., Parakkal, P. F., Membrane-Coating Granules of Kera-... [Pg.70]

Membrane Coating Granules (MCG). MCGs are spherical or oval organelles (100-300 nm in diameter) found both in keratinized as well as in non-keratinized epithelia but are different with regard to composition in both epithelia. MCGs discharge their contents into... [Pg.2665]

The surface tissue of the mouth is squamous epithelium, and the cells lining the cheek are dead and enucleated. The effective permeability barrier is quoted as between 10 9 and 10 5 cm/s due in part to the activity of membrane coating granules... [Pg.573]

Matolsky, A.G. and Parakkal, P.F. (1985) Membrane coating granules of keratinising epithelia. The Journal of Cell Biology, 24, 297-307. [Pg.590]

Bonneville et al. recently reviewed this subject (B27) and added electron micrographic evidence of their own indicating (1) the existence of dense amorphous masses (of mucopolysaccharide nature) between stratum corneum cells of the psoriasis lesion which they did not see in normal skin and which were continuous with the middle plate of the desmosome and (2) an increased number of keratinosomes in psoriasis (keratinosomes are the same as membrane coating granules, which are also the same as cytoplasmic lamellated structures that empty into the intercellular space at about the level of the granular layer). [Pg.363]

VI. Van de Staak, W. J. B., Stadhouders, A. M., and Gilsing, H., A comparative electron microscopic and histochemical investigation of membrane-coating granules in normal skin and in the skin of psoriasis vulgaris patients. Dermatologica 138, 341-345 (1969). [Pg.386]

See other pages where Membrane-coating granules is mentioned: [Pg.196]    [Pg.90]    [Pg.91]    [Pg.92]    [Pg.170]    [Pg.195]    [Pg.196]    [Pg.204]    [Pg.219]    [Pg.60]    [Pg.171]    [Pg.191]    [Pg.191]    [Pg.854]    [Pg.49]    [Pg.50]    [Pg.50]    [Pg.51]    [Pg.51]    [Pg.1311]    [Pg.2665]   
See also in sourсe #XX -- [ Pg.188 , Pg.209 , Pg.210 ]

See also in sourсe #XX -- [ Pg.2665 ]



SEARCH



Coated membrane

Intracellular membrane-coating granules

Membrane coating granules oral epithelium

© 2024 chempedia.info