The MB isoenzyme of creatine kinase (EC 2.7.3.2) may be prepared in vitro by dissociation of the MM and BB dimers into the M and B monomers. These monomers then recombine in a random manner to form all possible combinations-MM, MB, and BBthe presence of which may be detected by chromatography or electrophoresis. Dawson et al. (1) describe this process for animal tissues, while Keutel et a!. (2)...

Twenty five blood samples from 6-month to 5-year old children with visceral leishmaniasis were analysed for various enzymes. Aspartate transaminase (AST), alanine transaminase (ALT), lactate dehydrogenase (LD) and its various isoenzymes were estimated in the serum, while glucose 6-phosphate dehydrogenase (G6PD) was measured in red blood cells. For comparison, blood samples from healthy chi...

Angiotensin converting enzyme (ACE; EC 3.4.15.1) was purified from porcine kidney and lung (endothelial isoenzyme) and testis (testicular isoenzyme) by affinity chromatography on lisinopril-2.8 nm-Sepharose. Atomic-absorption spectroscopy revealed that ACE purified from kidney and lung contained 2.58 and 2.35 atoms of zinc per molecule of enzyme (M(r) 147,000) respectively. In contrast, ACE pur...

This study aimed to investigate whether carbamazepine, sodium valproate or phenobarbital as monotherapy in ambulatory epileptic children with adequate sun exposure have some effect on their bone metabolism based on the determination of total serum alkaline phosphatase (AP) levels and its bone isoenzyme activity. Blood samples were obtained from 118 epileptic children (37 on carbamazepine, 47 on...

The hypothesis that hepatitis B infection is etiologically related to hepatoma has been investigated by studying the interrelationships between hepatitis B surface antigen (HBsAg, Australia antigen) and the fast-moving 5'-nucleotide phosphodiesterase Band V isoenzyme (5'-NPDase-V). Sera from 58 patients with viral hepatitis were tested for 5'-NPDase-V and HBsAg. The isoenzyme was found in 34 of...

purpose: myocardial infarction is among the most common diagnoses in patients admitted   to hospitals in western countries, and its rapid diagnosis is of utmost importance. this study   was conducted to determine the most sensitive double-marker cardiac isoenzyme of creatinine   kinase, troponin i, and myoglobin for diagnosing acute myocardial infarction.   materials and methods: this was an ob...

acetone fractionated peroxidase from crude extract of brassica oleracea leaves (cabbage) was purified in three steps on chromatographic columns, using sp-sepharose, deae-sepharose and con a-sepharose. the specific activity of purified main isoenzyme (boc-pod) is 1887 u/mg protein with rz: 3.1, which is 172 times more than the rz of crude extract with 4.3% recovery. the molecular weight of boc-p...

The organ distribution of rat histidine-pyruvate aminotransferase isoenzymes 1 and 2 was examined by using an isoelectric-focusing technique. Isoenzyme 1 (pI8.0) is present only in the liver and its activity is increased by the injection of glucagon, whereas isoenzyme 2 (pI5.2) is distributed in all tissues (liver, kidney, brain and heart) tested, and is not affected by glucagon injection. Isoe...