Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:3.1.1.8 (cholinesterase)
 12,691 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Homogenates of individual adult Fasciola hepatica, collected from bile ducts of sheep, were subjected to isoelectric focusing in polyacrylamide flat-bed gels after which zymograms were made by enzymatic and staining reactions. Seven identifiable isozymes that hydrolyzed alpha-naphthyl acetate were found. These 7 isozymes were identified by their isoelectric points as 5.10, 5.15, 5.25, 5.40, 5.55, 5.65, and 5.75. None of these isozymes was common to all F hepatica examined. Combinations of these isozymes in individual flukes revealed 7 distinct phenotypes, the frequency of which varied between local populations, i.e., populations of flukes obtained from individual sheep of different origin. In addition to these 7 isozymes, there were weak staining bands of enzyme activity, between pH 5.8 and the cathode end of the gels, which could not be accurately identified. The method of isoelectric focusing and zymogram preparation used in the present study did not reveal cholinesterase activity, even though the presence of activity in homogenates was demonstrated by polyacrylamide disc-gel electrophoresis. Strong activity of acid phosphatase between pH 5 and 6 was found, but poor resolution prevented obtaining accurate identification of isozymes. Weak activity with poor resolution of isozymes of alkaline phosphatase was observed between pH 4.4 and 5.75.
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PMID:Enzyme polymorphism in Fasciola hepatica L.: esterases. 98 40

A number of enzymes, presumably secreted by larvae of B. microplus under natural feeding conditions, have been investigated in the skin of previously unexposed calves 4 h after infestation at the attachment site. Carboxylic ester hydrolase activity was demonstrated in the dermis, immediately adjacent to the mouthparts, or in the attachment cone, depending on substrate and reaction pH. The carboxylic ester hydrolase acting on naphthol AS-D acetate (2-acetoxy-3-naphthoic-O-toluidide) at pH 7-1 was characteristically found in the dermis and not in the attachment cone. The use of specific inhibitors showed that this enzyme was primarily a B-esterase or carboxylesterase with possibly a small portion of C-esterase or acetylesterase. It is postulated that carboxylic ester hydrolase could contribute to the dilation observed in the subepidermal capillaries adjacent to the attachment sites of unexposed animals, through the formation of plasma kinins. Other enzymes demonstrated in the dermis, adjacent to the mouthparts, were triacylglycerol lipase, as an aggregated deposit, and small amounts of aminopeptidase (microsomal) and monophenol monooxygenase. Aminopeptidase (microsomal) was also demonstrated in the attachment cone or adjacent epidermis, according to the substrate used. No activity was found in the host tissue, in association with the attachment site, for either alkaline or acid phosphatase, acetylcholinesterase or cholinesterase, peroxidase or amine oxidase (flavin-containing), despite the intense histochemical reaction for the latter in the tissues of larvae.
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PMID:Boophilus microplus: characterization of enzymes introduced into the host. 102 62

The histoenzymologic study of the adrenals in Glis glis was realized for 4 enzymatic activities (acid phosphatase, glucose 1 phosphate dehydrogenase, delta5 3beta-hydroxysteroid dehydrogenase and cholinesterase) completed by the simultaneous dosage of glucose-6-phosphate dehydrogenase. The histophotometric measures made it possible to differentiate the enzymatic activities of the different zones of the adrenal cortex and to show the persistance of an important activity of the zona fasciculata and sometimes of the zona reticulata during hibernation, independantly of the zona glomerulosa. This study confirms the activation of the adrenal cortex during hibernation with a brutal depletion at awakening and reduced activity during estivation.
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PMID:[Histoenzymologic study of the adrenal gland of the dormouse during the annual cycle]. 102 46

The activities of aspartate transminase (EC 2.6.1.1), alanine transminase (EC 2.6.1.2), alkaline phosphatase (EC 3.1.3.1), acid phosphatase (EC 3.1.3.2) leucine arylamidase (EC 3.4.1.1), aldolase (EC 4.1.2), lactate dehydrogenase (EC 1.1.1.27), malate dehydrogenase (EC 1.1.1.38) and cholinesterase (EC 3.1.1.7) were measured in serum of male rabbits and albino Wistar rats in dlplicate by means of microliter techniques. Furthermore, the diurnal alterations of enzyme activity were established in 8--10 animals of both species. Aspartate transaminase activity in the serum of rats was found to be significantly higher than in the serum of humans and rabbits, and essentially lower alkaline phosphatase values were obtained from the serum of rabbits in comparison with those found for the serum of humans and rats. Relatively high acid phosphatase and aldolase values as well as a very low cholinesterase activity were found in the serum of rabbits and rats. The mean malate dehydrogenase-activity was found to be twice as high as the mean lactate dehydrogenase, which is the contrary of the situation found in human serum. No significant diural alterations of the examined enzyme activities were established. The differences found between the animal and the human enzyme activities in serum are explained by species-determined peculiarities of metabolism or specific enzyme configuration.
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PMID:[Enzyme activities in serum of rabbits and rats-reference values and circadian alterations. Serum enzymes and factors that influence their activity,I (AUTHOR'S TRANSL)]. 103 68

The phenotypic distribution and gene frequencies of haptoglobin (Hp), transferrin (Tf), group specific component (Gc), cholinesterase (Cho E2), and alpha1-antitrypsin (Pi) in plasma proteins, and phosphoglucomutase (PGM), 6-phosphogluconate dehydrogenase ((6-PGD), esterase D (Es D), phosphohexose isomerase (PHI), adenosine deaminase (ADA) and acid phosphatase (AcP) in red cells were studied in 127 atopic, asthmatic patients. The gene frequencies were compared with normal groups. The phenotypic distribution of the Pi system in atopic patients was somewhat different from the normal. No significant differences were found between the two groups in protein systems or in enzyme systems, except Pi systems. In conclusion, except for the Pi system, no definite association between polymorphic traits and atopic asthma was found in this study.
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PMID:The distribution of polymorphic traits in atopic asthmatic patients. 108 Mar 21

On the appearance in the animals (guinea pigs) of paralysis of the limbs and myasthenia after the administration of Cl. botulinum, type B, toxin, there was seen a considerable vascular hyperemia of the spinal cord, and in the neurons of the phrenic nerve nucleus there developed dystrophic-necrotic processes coursing with a marked swelling, hyperchromasia and tigrolysis. As revealed histochemically, at this stage of the botulin intoxication the neurons of the phrenic nerve nucleus displayed metabolic changes expressed in the altered activity of succinic dehydrogenase, acid phosphatase and cholinesterase.
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PMID:[Morphological and histochemical characteristics of the reaction of the body to Cl. botulinum toxin administration. III. The cellular reaction of the diaphragmatic nerve nucleus to the administration of Cl. botulinum type B toxin]. 121 Sep

The water-soluble proteins of the cerebral gray matter and some enzyme systems (cholinesterase, acetylcholinesterase, lactate dehydrogenase, malate dehydrogenase, acid phosphatase) were studied in 9 autopsy cases of Alzheimer's presenile or senile dementia, 1 case of Pick's disease and 1 case of cerebral arteriosclerosis. The proteins and enzyme patterns were visualized on polyacrylamide gradient gels after electrophoresis. In all patients studied, the profiles of cerebral gray-matter proteins were normal. In the patients with advanced dementia, the enzyme patterns usually were abnormal. Particularly in Alzheimer's disease, the activity of malate dehydrogenase was markedly increased.
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PMID:Some cerebral proteins and enzyme systems in Alzheimer's presenile and senile dementia. 124 83

The thyroid gland of guinea pigs were studied morphologically. Histochemical methods were used for detection of lactate dehydrogenase, succinic dehydrogenase, cholinesterase, alkaline phosphatase and acid phosphatase. The distribution of "C"-cells in normal thyroid glands was proved to be uneven. In the center of the gland they were more numerous. For statistical investigations the method of silver impregnation of "C"-cells is more practicable, since they can not be obviously distinguished from acinar cells on the basis of glycerophosphate dehydrogenase only. The activity of cholinestarase in "C"-cells and in some other cells of folliculi epithelium is very high. A supposition is made that there exist two kinds of the follicular lining thyrocytes, having different histochemical properties and histogenesis as well.
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PMID:[Histochemical studies of several "K"-cell enzymes in guinea pig thyroid glands]. 125 32

In the structures of the nucleus supraopticus, changes of the activity of some enzymes (alkaline phosphatase, acid phosphatase, thiamine pyrophosphatase, butyrylcholinesterase, succinate dehydrogenase, glycerol-3-phosphate dehydrogenase) were studied in rat brains exposed to high supralethal doses of gamma radiation at early time interval after irradiation. The activity of alkaline phosphatase, acetylcholinesterase and butyrylcholinesterase increased in the wall of blood capillaries after irradiation with 50, 150, 500 Gy. The dose of 500 Gy induced the most pronounced activity. These membrane enzymes are highly sensitive to ionizing radiation. The activity of acid phosphatase, acid nonspecific esterase and thiamine pyrophosphatase increased in magnocellular neurons after irradiation with all doses of gamma radiation. Glycerol-3-phosphate dehydrogenase and succinate dehydrogenase showed a decreased activity in neurons, neuropil and capillaries.
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PMID:Effect of ionizing radiation on the nucleus supraopticus. 183 85

Dichlorvos was applied as spray at 1 and 2% concentrations daily for a period of 28 and 21 consecutive days, respectively to buffalo calves. Animals sprayed with 1% dichlorvos displayed mild to moderate clinical signs of toxicosis during the 4th week of exposure. The higher concentration (2%) produced clinical signs of poisoning after 12-16 applications, and was lethal to one of three animals. Daily spraying of dichlorvos at both concentrations inactivated erythrocyte cholinesterase (ChE) (15-21%), plasma ChE (17-20%) and serum carboxylesterase (5-10%) within 3 days. The extent of inhibition of esterases was increased with repeated treatment and maximal inhibition of erythrocyte ChE (80-89%), plasma ChE (81-91%) and serum carboxylesterase (33-54%) with 1 and 2% concentrations was observed on the 28th and 21st day after start of application, respectively. In surviving animals, blood esterases remained inactivated to the extent of 14-65% on the 14th day after the termination of treatment. Dichlorvos at both concentrations significantly (P less than 0.01) elevated the serum levels of aspartate aminotransferase, alanine aminotransferase, acid phosphatase and alkaline phosphatase. The activities of these enzymes in surviving animals recovered to control values within 14 days after the final application of dichlorvos.
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PMID:Effects of repeated topical application of dichlorvos on blood enzymes and its toxicity in buffalo calves (Bubalus bubalis). 236 59


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