Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

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Query: EC:3.1.3.1 (alkaline phosphatase)
47,916 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Acrylamide gel disc electrophoresis provides a reliable and reasonably rapid method of differentiating the raised serum alkaline phosphatase (AP) of bone origin from that of liver origin. The technique has been placed for the first time on a semiquantitative basis. Measurement of both band width and band position effectively distinguishes the bone from the liver isoenzyme, but band width provides superior discrimination. An origin band was seen in none of the normal subjects and in only 7% of patients with bone disease but was present in 78% of patients with liver disease, a highly significant increase. Fifty percent of normal individuals had a small-intestinal band in serum taken two hours after a meal, as did 35% of patients with liver disease, but the incidence of intestinal bands in bone disease was only 11%, significantly less than in the other two groups. The genetic control of small-intestinal AP in serum has been confirmed, but it has been demonstrated that the decrease of intestinal AP in bone disorders is not genetically determined.
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PMID:Polyacrylamide gel disc electrophoresis of alkaline phosphatase isoenzymes in bone and liver disease. 97 79

Earlier studies have identified two main isoenzymes of alkaline phosphatase in the sera of patients with obstructive liver disease. This paper reports on a study of these isoenzymes in specific types of liver disease where the pathology in relation to bile duct obstruction is known. The results have been used to support the theory that in biliary obstruction the increase in serum alkaline phosphatase is in part due to regurgitation of the biliary isoenzymes.
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PMID:An interpretation of the serum alkaline phosphatase isoenzyme patterns in patients with obstructive liver disease. 100 41

The serum alkaline phosphatase was fractionated by polyacrylamide gel electrophoresis in 317 patients with elevated serum alkaline phosphatase activity. In 253 patients the source of the elevation was the isoenzyme of presumed liver origin, band L. In 87 of these patients, there was either no obvious liver disease or the alkaline phosphatase elevation was inappropriately high. In 19 of the 87, liver disease was further excluded by liver biopsy or by laparotomy. Because of this, biochemical studies were done to verify the hepatic origin of band L. Band L and alkaline phosphatase extracted from human liver migrated together on polyacrylamide gel electrophoresis before and after digestion with Vibrio cholerae neuraminidase. They had identical pH optima, sedimentation coefficients, Michaelis constants, and rates of inactivation at 55.5 degrees C. They had different rates of inactivation in 3 M urea. Over-all, the data indicate that band L is of liver origin, and that elevation of the hepatic alkaline phosphatase isoenzyme may be a nonspecific finding in certain patients.
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PMID:Significance of elevated liver alkaline phosphatase in serum. 109 21

In a study of fifty patients subjected to cardiac surgery nine (18%) had immediate post-operative liver complications. These included persistente jaundice, an increase in hepatomegaly and elevation of the alkaline phosphatase. In these and the rest of the cases there were extra-hepatic complications such as hyposystole, infarct, the post-pericardiotomy syndrome as related to the heart. Pulmonary complications were of infectious nature and a general complication was sepsis. These complications were sufficiently important to relate them etiologically to the hepatic disorder. Especially important is right hyposystole and it or tricuspid insufficiency can be blamed for the hepatic disorder in some of these patient. Nonetheless, these hepatic complications are seen less frequently now that we are giving effective treatment to the tricuspid insufficiency during the surgical intervention. We observed the clinical picture known as "benign postoperative cholestasis" in only two patients. Hepatitis with jaundice was seen in four patients during one to three months postoperatively. This was HB hepatitis and its course was more prolonged than that usually seen in Mexico, and it turned into chronic hepatitis in four patients. Biopsies done in one case a six months and in the other at nine months post-operatively showed the picture of chronic aggresive hepatitis. In those patients who did not have hepatic complications a late liver evaluation showed an improvement as compared to the pre-operative condition which was parallel to the hemodynamic improvement.
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PMID:[Hepatic complications in the postoperative of cardiac surgery]. 123 73

Serum glutathione reductase activity was measured in various conditions including acute hepatitis, chronic hepatitis, liver cirrhosis, malignant neoplastic diseases, and obstructive jaundice. A statistically significant elevation of the enzyme activity was found in all of these clinical conditions above normal value, especially in patients with acute hepatitis, some liver cancer, and malignant biliary obstruction. Comparison with other liver function tests showed the existence of statistically significant correlations of serum glutathione reductase with SGOT, SGPT and alkaline phosphatase in acute hepatitis, and with alkaline phosphatase in cirrhosis. In parenchymatous liver disease, serial determination was found to be important. High values in obstructive jaundice suggest the malignant obstruction.
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PMID:Clinical significance of serum glutathione reductase in various clinical conditions, especially in liver diseases. 125 42

After ingestion of galactose (10 g per m2) labeled with 14C or 13C, breath was collected from subjects at intervals for 4 hr followed by measurement of 14CO2 by liquid scintillation counting or of 13CO2 by mass spectrometry. Nine subjects without liver disease and 21 "cirrhotic" patients were tested with 14C; 8 control subjects and 4 patients with diagnosis of cirrhosis were tested with 13C. The mean rates of expiration of labeled CO2 by the patients with "cirrhosis" were one-third to one-half of mean normal rates during the first 90 min. The time of peak concentration of tracer CO2 for cirrhotic patients (150 to 180 min) was later than for normal subjects (90 to 120 min). There was distinctly greater separation between control and liver disease groups by test of 14CO2 radioactivity at 1 hr than by serum alkaline phosphatase, total bilirubin, and transaminase, but only slightly better separation than by serum albumin concentration (which was highly correlated with 14CO2 output). The [14C]galactose test is simpler than the standard intravenous galactose tolerance test, and , like the latter, appears superior to some other tests for recognition of cirrhosis. The use of 13C provides an example of a new direction for clinical application of this stable, nonradioactive nuclide.
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PMID:Test for alcoholic cirrhosis by conversion of [14C]- or [13C]galactose to expired CO2. 127 55

Transient hyperphosphatasemia of infancy was diagnosed in 4 children hospitalized during a 6-month period (0.3% of all hospitalized children). The characteristic features of this disorder are: 1. elevation of serum alkaline phosphatase (of both liver and bone origin) up to 3-30 times the upper limit of normal for age (usually discovered during intercurrent infection); 2. return of the serum alkaline phosphatase to normal in a few weeks; 3. no residual clinical or laboratory evidence of bone or liver disease. The child is usually less than 5 years old. Recognition of the benign nature of this disorder prevents extensive laboratory workup and unnecessary anxiety.
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PMID:[Transient hyperphosphatasemia of infancy]. 128 98

Mild liver dysfunction is a well-known complication of HAI, but it has been thought to be transient and reversible in most cases. In the case, of metastatic liver disease, in particular, HAI has been performed safely because liver function is normal for the most part. We encountered 2 cases of irreversible severe liver dysfunction and esophageal varices after hepatectomy for metastatic liver tumor from colorectal cancer. They were treated with postoperative adjuvant HAI. Biliary enzyme as alkaline phosphatase elevated, and dilated intrahepatic bile ducts were observed in both patients. Fibrosis of Glissonean sheath, dilatation of intrahepatic bile ducts and intrahepatic biliary stones were observed at autopsy in both patients. One of the patients had obstruction of portal trunk. It must not be forgotten that such complications can occur even in a case with non-cirrhotic liver.
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PMID:[Two cases of esophageal varices complication after hepatic arterial infusion chemotherapy (HAI) for metastatic liver tumor]. 132 19

A 15-year old Black teenager came to a clinic at the University of Alabama's School of Medicine in Tuscaloosa requesting oral contraceptives (OCs). The physical examination indicated that she was in good health and the physician prescribed an OC (1 mg norethindrone and .035 mg ethinyl estradiol). 21 months later she returned complaining of yellow eyes for 3 weeks. The oral mucosa was also jaundiced. She had considerably high levels of bilirubin and alkaline phosphatase. She had no hepatitis virus antibodies. 5 months later she returned for the physical examination required to renew the OC prescription. She did not have jaundice at this time. 10 months later she complained of malaise and muscular pain. Her alkaline phosphatase level was high, but her bilirubin level was normal. She had mild hepatosplenomegaly without focal defects. After reviewing her medical records, the physician diagnosed intrahepatic cholestasis and discontinued her OC prescription. Liver function tests were normal within 3 months. 14 months later, she returned complaining of malaise and reported taking OCs obtained at another clinic 3 months earlier. The physician advised her about the complications of OCs and about other contraceptive methods. The same physician also examined a 32-year-old Black woman who had intermittent epigastric and right-upper quadrant abdominal pain for 2 weeks. Eating worsened the pain, which lasted for up to 15 minutes. She had used an OC for 12 years. Ultrasound revealed a 4.2 cm hypoechoic mass in the left upper lobe of the liver. The physician discontinued the OCs. The tumor regressed over 12 months. Active liver disease is a contraindication to OC use. Women who had cholestatic jaundice while pregnant or have first degree relatives with cholestatic jaundice of pregnancy should not use OCs. Physicians may introduce OCs to closely monitored women with a history of liver disease whose liver function tests are normal. Women with a family history of biliary excretion defects should not use OCs.
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PMID:Hepatobiliary complications of oral contraceptives. 133 97

The aim of this study was to describe biochemical and liver function test changes after hepatectomy in 33 patients with the following characteristics: absence of underlying liver disease, no blood or plasma transfusion during the perioperative period, uneventful postoperative course. Resection with a temporary pedicle inflow occlusion (10-45 min) consisted of unisegmentectomy or less in 15 patients and bisegmentectomy or more in 18. Blood tests showed: a correlation between aminotransferase rise and duration of ischaemia, and a fall in prothrombin time and factor V levels correlating with the weight of resected specimen at day 1; a moderate gamma-glutamyl transpeptidase and alkaline phosphatase elevation and a rise in fibrinogen level correlating with the extent of resection at day 7. Changes in haemoglobin level, white cell count, platelet count, prothrombin time, factor V level and serum bilirubin level tended to return to preoperative levels by day 7. For gamma-glutamyl transpeptidase and alkaline phosphatase, increased levels persisted for 8-12 weeks after resection. These results, in this selected group of patients, allow a description of the 'natural history' of hepatectomy. The knowledge of these 'natural' changes may contribute to the early detection of postoperative complications.
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PMID:'Natural history' of hepatectomy. 134 82


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