• Journal of Radiation Protection and Research
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• v.18 no.2
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• pp.61-69
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• 1993

We examined various enzyme activity changes by intraperitoneal injection uranium in the carp liver. These enzyme activity changes can be used as biochemical indicators of internal exposure to uranium. The results were followings ; 1) Total protein concentration decreased by intraperitoneal injection in the carp liver. 2) Lysosomal acid pretense and ${\beta}-glucuronidase$ activities increased in the liver until sixth intraperitoneal injection of uranium, but Lysosomal acid phosphatase activities decreased in the liver until the sixth injection of uranium. 3) Alkaline phosphatase activities sharply increased and Glutamate oxaloacetate Transaminase activities steadily decreased in the liver until the sixth injection of uranium. 4) Creatine %kinase activities steadily decreased and malate dehydrogenase activities sharply decreased in the liver after the primary injection of uranium. Any malate dehydrogenase activities was not detected after sixth injection of uranium.

• Korean Journal of Food Science and Technology
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• v.38 no.2
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• pp.169-175
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• 2006

Potentiometric biosensor using flow injection analysis system was developed to determine citrate concentration in foods. Biosensor system consisted of sample injector, peristaltic pump, enzyme reactor, carbonate ion selective solid-state electrode, reference electrode, detector, and recorder. Enzyme reactor was prepared with immobilized citrate lyase and oxaloacetate decarboxylase. Carbonate ions produced through enzyme reactions of citrate were potentiometrically detected by ion selective electrode. Optimum conditions for biosensor system were investigated. Interference effect of major sugars and organic acids was less than 5% on citrate biosensor system. Citrate concentrations in fruit juices were determined by biosensor and gas chromatography. No significant difference was observed between two analytical methods. Results indicate citrate biosensor is useful in determining citrate concentration in foods.

• Korean Journal of Microbiology
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• v.25 no.4
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• pp.353-359
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• 1987

The aim of the present study was to investigate the effects of growth rate on the biosynthesis of tylosin in Streptomyces fradiae. In order to elucidate the relation between the growth rate and the tylosin formation rate, the activities of enzymes involved in oxaloacetate metabolism were determined using cells grown at different growth rates in chemostats. As the results, it was found that the specific rate of tylosin formation($q_{p}$) was closely related to the specific cell growth rate and the maximum value of $q_{p}$ was 1.1mg tylosin, $q_{p}$ cell, $0.013h^{-1}$ at the growth rate $0.013h^{-1}$. However further increase in the growth rate over $0.013h^{-1}$ resulted in apparent decrease of $1_{p}$. The synthesis and activities of citrate synthase, aspartate aminotransferase, and PEP carboxylase were very low at lower growth rate. On the other hand, the activity and synthesis of methylmalonyl-CoA carboxyltransferase was closely related to tylosin formation. Therefore it was concluded that tylosin formation was apparently controlled by the growth rate.

• Natural Product Sciences
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• v.14 no.2
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• pp.95-99
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• 2008

In a project to study the hepatroprotective effect of some plant extracts four plants Ephedra foliate Boiss, Alhagi maurorum Medikus, Capsella bursa-pastoris (L.) Medik. and Hibiscus sabdariffa L. were studied. The ethanol extract of the aerial part of the first three plants and the flowers of H. sabdariffa were subjected to hepatoprotective assays using Wistar albino rats. Liver injury induced in rats using carbon tetrachloride. The biochemical parameters; serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transaminase (SGPT), alkaline phosphatase (ALP) and total bilirubin were estimated as reflection of the liver condition. Based on the good results of the biochemical parameters measurements, histopathological study was performed on the liver of rats treated with E. foliate. The normal appearance of hepatocytes indicated a good protection of the extract from carbon tetrachloride hepatotoxicity. All the results were compared with silymarin, the reference hepatoprotective drug.

• Asian-Australasian Journal of Animal Sciences
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• v.5 no.4
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• pp.643-646
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• 1992

Role of low degradable protein in milk production of early lactating Murrah buffaloes has been studied in relation to energy status of test animals. Replacement of conventional concentrate mixture with low degradable cotton seed cake resulted in appreciable changes in circulatory transaminases and phosphatase levels. The enzymes viz. glutamate oxaloacetate and glutamate pyruvate transaminase and alkaline phosphatases increased with feeding of said cake indicating stress on hepatic tissue. Animals seemed to overcome stress by feeding enhanced levels of same protein along with improved feed intake, body weight and milk production.

• Journal of Veterinary Clinics
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• v.17 no.1
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• pp.28-31
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• 2000

An animall health monitoring system in Gyeongnam area(near Chinju) was studied to analysis of biochemical risk factors in 617 herds. Clinical serum factors such as glutamate oxaloacetate transaminase(GOT), glutamate pyruvate transaminase(GPT), Ca, P, Mg, glucose, and cholesterol were measured with automatic biochemical analyzer(Ra-X7T Techmmicon, USA). In serum analysis, 613 cattle were within normal llimits(GOT: 9.5-85 IU-dl, GPT: 25-77IU/dl, total protein: 5.8-8.5g/dl, Ca: 4.2-12.4mg/dl, P: 4.6-9.7mg/dl, Mg: 1.5-3.0mg/dl, glucose: 48-120mg/dl, Cholesterol: 70-170mg/dl), the other cattle showed high glucose and high cholesterol level. It is proposed that clinical serum factors to be estimated may be valuable for developing of animal health monitoring system model.

• Advances in Traditional Medicine
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• v.5 no.2
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• pp.137-143
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• 2005

Doxorubicin induces oxidative stress leading to cardiotoxicity causing electrocardiogram abnormalities and increases in biomarkers associated with toxicity. Green tea extract (GTE) is reported to possess antioxidant activity mainly via its polyphenolic constituent, catechins. This study was intended to determine the effect of various doses of GTE (25, 50 and 100 mg/kg/day p.o. for 30 days) on doxorubicin-induced electrocardiographic and biochemical changes in rat heart. The latter included lactate dehydrogenase, creatine kinase, and glutamic oxaloacetate transaminase in serum and superoxide dismutase, catalase, and reduced glutathione, as well as membrane bound enzymes like $Na^+K^+ATPase,\;Ca^{2+}ATPase,\;Mg^{2+}ATPase$ and decreased lipid peroxidation in heart tissue Results demonstrated that rats which received GTE were less susceptible to such changes indicating protection afforded by GTE.

• Advances in Traditional Medicine
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• v.7 no.1
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• pp.74-78
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• 2007

The plants, Trianthema decandra and Glinus oppositifolius are commonly used by tribal people in India for the treatment of liver diseases. Hepatoprotective activity of methanol extracts of Glinus oppositifolius and Trianthema decandra at the dose of 250 and 500 mg/kg body weight administered orally was evaluated against paracetamol induced liver damage in rats. Biochemical parameters such as serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, serum alkaline phosphatase, bilirubin, total serum protein, lipid peroxide and glutathione content of the liver were estimated to determine liver function and metabolism. From the biochemical observations, it was concluded that methanol extracts of Glinus oppositifolius and Trianthema decandra significantly restored the altered biochemical parameters towards normal condition in paracetamol induced liver damage.

• Natural Product Sciences
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• v.12 no.3
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• pp.157-161
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• 2006

The alcoholic extract of Momordica dioica roots significantly reduced $CCl_4$ induced hepatotoxicity in rats upon oral administration (200 mg/kg), as judged from the serum enzyme levels [serum glutamate oxaloacetate transaminases (SGOT), serum glutamate pyruvate transminases (SGPT), and alkaline phosphatase (ALP)]. These results were comparable with sylimarin (1.25 mg/kg, p.o.). The alcoholic extract inhibited the formation of oxyten derived free radicals (ODFR) in vitro with $4000\;{\mu}g/ml$ ascorbic system. The alcoholic extract also significantly reduced carrageenan-induced paw edema when administered orally (200 mg/kg) and the activity was comparable with ibuprofen(200 mg/kg, p.o.).

• Advances in Traditional Medicine
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• v.10 no.2
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• pp.79-85
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• 2010

The methanolic extract of natural roots of Mucuna pruriens was screened for hepatoprotective and antioxidant effects in carbon tetrachloride ($CCl_4$) induced hepatotoxicity in Albino rats. The degree of protection was measured by estimating biochemical parameters like serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, total protein and level of serum bilirubin (both total and direct). The extract also reduced $CCl_4$ induced lipid peroxidation both in-vitro and in-vivo. Hepatoprotective activity of methanolic extract at dose 300 mg/kg body weight, i.p., was comparable with standard drug Silymarin (25 mg/kg, i.p.). Furthermore, histopathological experiments were also carried out to support the study.