Results 311 to 320 of about 1,587,373 (355)

Damage to Epithelial Basement Membrane by Thermokeratoplasty

American Journal of Ophthalmology, 1977
To determine the effects of thermokeratoplasty (TKP) on the basement membrane complexes of the corneal epithelium, transmission electron microscopy was performed on the corneal buttons of five patients with failed TKP and on two normal corneas and five corneas with keratoconus that were immediately treated by TKP (acute TKP). The consistent findings of
J A, Fogle, K R, Kenyon, W J, Stark
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Membrane damage and the pathogenesis of cardiomyopathies

Journal of Molecular and Cellular Cardiology, 1985
Membrane damage plays an important role in the pathogenesis of ischemic damage to the myocardium, and is ultimately responsible for the release of cellular contents-notably intracellular enzymes-after ischemic cell death. This membrane damage may be caused by the incorporation of lipids into myocardial membranes, by the enzymatic actions of lipases ...
A M, Katz, J W, Freston, F C, Messineo, L G, Herbette   +3 more
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Cooling and Freezing Damage Platelet Membrane Integrity

Cryobiology, 1999
Cytoskeletal rearrangements and a membrane lipid phase transition (liquid crystalline to gel) occur in platelets on cooling from 23 to 4 degrees C. A consequence of these structural alterations is irreversible cellular damage. We investigated whether platelet membrane integrity could be preserved by (a) previously studied combinations of a calcium ...
T J, Reid, V F, LaRussa, G, Esteban, M, Clear, L, Davies, S, Shea, M, Gorogias   +6 more
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Two membrane damaging toxins from Aeromonas hydrophila

Toxicon, 1982
The effects of two hemolysins (alpha and beta) from Aeromonas hydrophila on human lung fibroblasts were investigated. The toxins differed with respect to relative size of lesions induced in the plasma membrane, morphological effects, reversibility of effects and adsorption to fibroblasts.
M, Thelestam, A, Ljungh
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Chitosan kills bacteria through cell membrane damage

International Journal of Food Microbiology, 2004
The bactericidal activity of chitosan (CS) acetate solution against Escherichia coli and Staphylococcus aureus was evaluated by the enumeration of viable organisms at different incubation times. Morphologies of bacteria treated with CS were observed by transmission electron microscopy (TEM).
Hui, Liu, Yumin, Du, Xiaohui, Wang, Liping, Sun   +3 more
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Red cell membrane damage.

The Journal of heart valve disease, 1998
Turbulent shear stresses created by the fluid dynamic characteristics of prosthetic valves cause damage to blood cells. Platelet activation and damage is extensively described and red blood cell hemolysis is reported in a significant number of valve replacements. Most of these studies have evaluated hemolysis in normal red cells and relate to different
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Permeability and photoxidative damage of membrane enzymes

Journal of Cellular Physiology, 1969
AbstractThe pattern of photodynamic damage of pig erythrocyte and rat brain microsomal ATPases and erythrocyte acetylcholinesterases has been studied, using rose bengal as photosensitizer. Of these enzymes the Na+‐K+‐Mg2+‐ATPase, believed to be associated with active transport, is very much more sensitive to damage than are the Mg2+‐ATPase and the ...
C J, Duncan, K, Bowler
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CCl4-induced damage to endoplasmatic reticulum membranes

Biochemical Pharmacology, 1973
Abstract Cytochrome P-450 can be used to indicate damage of the membranes of endoplasmatic reticulum by CCl 4 . Free radicals are formed during the metabolism of CCl 4 , which stimulate peroxidation of unsaturated fatty acids and directly inactivate cytochrome P-450. The first indication of cytochrome P-450 inactivation is a decrease in the reduction
A I, Archakov, I I, Karuzina
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Membrane damage by complement

Biochimica et Biophysica Acta (BBA) - Reviews on Biomembranes, 1983
S, Bhakdi, J, Tranum-Jensen
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Membrane-Damaging Toxins and Inflammation

1999
The most widespread mechanism for membrane damage is the formation of transmembrane pores. This may be incurred by secreted proteins, or by surface-bound molecules that act when bacteria come into intimate contact with host target cells. Pore formation by secreted toxins follows a general pattern of events: (a) binding; (b) oligomerization); (c ...
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