Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:2.6.1.2 (alanine aminotransferase)
 26,722 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Serum activities of LDH isoenzymes as well as total LDH, GOT and GPT were determined after hepatic artery ligation in five patients with primary or metastatic liver cancer. Transaminases and total LDH activities were raised after the operation showing their peaks on the first or third postoperative days. LDH2, LDH3 and LDH5 increased substantially during the first three postoperative days. These changes became nearly normalized within two weeks after hepatic artery ligation. As control the same enzymatic activities were measured in eight patients after usual laparotomies but no significant abnormalities were observed postoperatively. Thus, liberation of not only cathodic but also anodic migrating LDH isoenzymes seems to ensue possibly after acute liver damage induced by hepatic artery ligation. This study also suggests that serial determination of LDH isoenzymes as well as its total activity could be a valuable assessment for evaluating the anti-tumor effect of hepatic artery ligation.
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PMID:Changes in lactic dehydrogenase isoenzymes after hepatic artery ligation in patients with hepatic carcinoma. 18 17

The laboratory data from 136 patients suffering from a mass outbreak of rubella were serially examined. Alteration of thrombocytopenia (38.7%), leukopenia (26.4%), increased LDH (94.3%), and increased GOT (32.4%) were observed during the early days of disease. Slightly later, increased GPT was noted in 48.5%. LDH isozymes may be grouped into two specific patterns: 1) an LDH3 dominant pattern appeared (90.4%) during the beginning days of the disease. 2) an LDH3 dominant pattern with LDH5 greater than LDH4 was detected one week later. It was concluded that the increase of LDH3 may have been induced by thrombocytopenia due to viral infection. The increase of LDH5 appears to result from liver damage. In conclusion, LDH isozyme findings are significant in the early diagnosis of liver damage in rubella.
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PMID:[Significance of LDH isozyme pattern in rubella]. 258 78

Toxicological effect of 3-chloro-1,2-propanediol on rats were studied to provide scientific basis for assessing the effect of Chloropropanols on human health. 170 SD rats were divided randomly into 8 groups and the dose of 0, 0.25, 0.5, 1.0, 2.0, 4.0, 8.0, 16.0 mg/kg 3-chloro-1,2-propanediol were given to rats for 90 days by gavages per day, respectively. The weight and food efficiency, hematology and clinical chemistry, NAG, GGT and total protein in urine, sperm number, sperm survive rate and sperm aberration rate, the LDH and LDH-X activity in testis, rate of organ/weight and histopathological analysis were measured. The results showed that different dose of 3-chloro-1,2-propanediol did not has adverse effect on body weight, food efficiency, Hb, red cell, white cell, serum AST, ALT, creatine, ALP, LDH, total protein and albumin, urine GGT and total protein, LDH activity in testis. At the dose of 4.0, 8.0 and 16.0 mg/kg group, the activity of NAG in urine and the rate of kidney/weight was significantly increased compared with negative control groups; the pathological changes in kidney were observed in the same groups, and the sperm number was also significantly decreased. At the dose of 8.0 and 16.0 mg/kg group, sperm survive rate and the X-LDH activity were significantly decreased and pathological changes were also observed in testis and caudal epididymis. It was concluded that the activity of NAG in urine and sperm number is the sensitive biological effective marker. Because urine is a kind of convenient available biological material, NAG activity in urine is a good biological effective marker for assessing effect of Chloropropanols on health. If the NAG activity can be used as sensitive marker for assessment on human health need to be tested further in human study.
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PMID:[Study on the toxicological effect of chloropropanols on rats]. 1453 99

l-lactate formation occurs via the reduction of pyruvate catalyzed by lactate dehydrogenase. l-lactate removal takes place via its oxidation into pyruvate, which may be oxidized or converted into glucose. Pyruvate oxidation involves the cooperative effort of pyruvate dehydrogenase, the tricarboxylic acid cycle, and the mitochondrial respiratory chain. Enzymes of the gluconeogenesis pathway sequentially convert pyruvate into glucose. In addition, pyruvate may undergo reversible transamination to alanine by alanine aminotransferase. Enzymes involved in l-lactate metabolism are crucial to diabetes pathophysiology and therapy. Elevated plasma alanine aminotransferase concentration has been associated with insulin resistance. Polymorphisms in the G6PC2 gene have been associated with fasting glucose concentration and insulin secretion. In diabetes patients, pyruvate dehydrogenase is down-regulated and the activity of pyruvate carboxylase is diminished in the pancreatic islets. Inhibitors of fructose 1,6-bisphosphatase are being investigated as potential therapy for type 2 diabetes. In addition, enzymes implicated in l-lactate metabolism have revealed to be important in cancer cell homeostasis. Many human tumors have higher LDH5 levels than normal tissues. The LDHC gene is expressed in a broad range of tumors. The activation of PDH is a potential mediator in the body response that protects against cancer and PDH activation has been observed to reduce glioblastoma growth. The expression of PDK1 may serve as a biomarker of poor prognosis in gastric cancer. Mitochondrial DNA mutations have been detected in a number of human cancers. Genes encoding succinate dehydrogenase have tumor suppressor functions and consequently mutations in these genes may cause a variety of tumors.
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PMID:Enzymes involved in l-lactate metabolism in humans. 2402 12