tannic acid/atrophy

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An improved method for preserving the cellular membrane ultrastructure of in vitro cultivated cells using tannic acid.

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Treatment of cultured cells with tannic acid after fixation with glutaraldehyde and osmification prevents the ultrastructural deterioration of cellular structures during dehydration and impregnation. Membranes of tannic acid-treated cells showed an increased contrast and sharp delineation of the

Deterioration of natural antioxidant species of vegetable edible oils during the domestic deep-frying and pan-frying of potatoes.

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In the present work, virgin olive oil, sunflower oil and a vegetable shortening were used as cooking oils for the deep-frying and pan-frying of potatoes, for eight successive sessions, under the usual domestic practice. Several chemical and physicochemical parameters (acidic value, peroxide value,

Degeneration of osteoblasts involved in intramembranous ossification of fetal rat calvaria.

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Ossification of calvariae from day-21 rat fetuses was reinvestigated by electron microscopy using different fixation techniques (glutaraldehyde/OsO4, tannic acid, ruthenium red, K-pyroantimonate). An osteoid layer with scattered mineral deposits was found at the mineralization front. Directly beyond

Some limitations of the use of tannic acid as a marker of damaged skeletal muscle fibres.

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Mouse biceps brachii muscles containing single transverse incisions were treated with low molecular weight tannic acid. In the absence of fibre degeneration, intracellular spread of tannic acid was confined to a short distance along the fibres from the damaged portions of the cell membranes. Beyond

Tannic acid induced hepatic injury in Clarias batrachus.

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The effect of intraperitoneal administration of an aqueous solution of tannic acid was examined after different intervals of time. The results showed a gradual and progressive destruction of the liver cells and transformation of its architecture. The histological signs of liver damage appeared 2 hrs

Tannic acid alleviates lead acetate-induced neurochemical perturbations in rat brain.

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Oxidative stress has been projected as a promising mechanism involved in lead exposure. The lead predisposition catalyzes oxidative reactions and generates reactive oxygen species. The present study was carried out to investigate the effect of oral administration of tannic acid (TA) on behavioral

Histopathological effects of tannic acid on the midgut epithelium of some aquatic Diptera larvae.

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The impact of tannins on larval Nematocera was investigated by an extensive survey of the relative toxicity of tannic acid in Diptera larvae representative of mosquito communities from alpine hydrosystems (Culicidae, Chaoboridae, Chironomidae, and Simuliidae) together with a nonindigenous vector

Mitigated calcification of glutaraldehyde-fixed bovine pericardium by tannic acid in rats.

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BACKGROUND Bioprosthetic heart valves derived from glutaraldehyde (Glut)-fixed xenografts have been widely used to replace diseased cardiac valves. However, calcification and degeneration are common following their implantation. Inflammation is closely associated with calcification of Glut-fixed

Tannic Acid, A Promising Anti-Photoaging Agent: Evidences of its Antioxidant and Anti-Wrinkle Potentials, and its Ability to Prevent Photodamage and MMP-1 Expression in L929 Fibroblasts Exposed to UVB

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Chronic and unprotect UV exposure leads to skin oxidative stress, following accumulation of damaged cellular components and downstream activation of specific signaling pathways, culminating in premature skin aging (photoaging). In this concern, polyphenols have been proposed for the prevention of

THE ACUTE TOXICITY OF TANNIC ACID ADMINISTERED INTRAGASTRICALLY.

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The LD(50) +/- S.E. of tannic acid given orally to albino rats was found to be 2.26+/-0.083 g. per kg. body weight, which is higher than its apparent LD(50) when given per rectum. The immediate cause of death was respiratory failure preceded by convulsions when death occurred early and by

Tannic acid suppresses ultraviolet B-induced inflammatory signaling and complement factor B on human retinal pigment epithelial cells.

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Ultraviolet B (UVB) radiation may cause the inflammation of retinal pigment epithelium (RPE) cells and play a role in development of age-related macular degeneration (AMD). The activation of the complement factor B (CFB) gene has been shown to be involved in formation of AMD. Here our results

Subretinal drusenoid deposits in non-neovascular age-related macular degeneration: morphology, prevalence, topography, and biogenesis model.

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OBJECTIVE To characterize the morphology, prevalence, and topography of subretinal drusenoid deposits, a candidate histological correlate of reticular pseudodrusen, with reference to basal linear deposit (BlinD), a specific lesion of age-related macular degeneration, and to propose a biogenesis

Tannic acid treatment enhances biostability and reduces calcification of glutaraldehyde fixed aortic wall.

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Progressive degeneration and calcification of glutaraldehyde (Glut) fixed tissues used in cardiovascular surgery restrict their long-term clinical performance. This limited biological stability may be attributable to the inability of Glut to adequately protect certain tissue components such as

Elastin stabilization in cardiovascular implants: improved resistance to enzymatic degradation by treatment with tannic acid.

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The long-term performance of tissue-derived, glutaraldehyde (Glut)-treated cardiovascular implants such as prosthetic heart valves and vascular grafts is limited by the bio-degeneration of tissue components. While collagen is satisfactorily preserved by Glut, elastin is not stabilized and is highly

Dietary and nutritional biomarkers of lens degeneration, oxidative stress and micronutrient inadequacies in Indian cataract patients.

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OBJECTIVE Habitual food and nutrient intakes of 140 Indian cataract patients and 100 age- and sex-matched controls (50-75 years), from high income group and low income groups, were assessed. METHODS Food intake was recorded by food frequency questionnaire and data were examined for linkages with

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