Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0008370 (cholestasis)
 9,378 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The serum levels of gamma-GT are raised early in most hepatic disorders. The highest levels usually are found in cholestasis, especially due to malignancy of the liver and the pancreas and in chronic alcoholism and drug abuse. The gamma-GT is not strictly a cholestatic enzyme. The highest score of information is yielded in alcoholic liver disease.
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PMID:[Significance of gamma-glutamyl-transpeptidase in the diagnosis of liver diseases]. 1 64

Serum gamma-glutamyl transpeptidase (gamma-GT) level was estimated in 132 patients with different liver diseases (chronic persistent and chronic active hepatitis, postnecrotic cirrhosis, chronic alcholic hepatitis and alcoholic cirrhosis, cholestasis syndrome, fatty liver, Gilbert disease) and malignancies with and without liver involvement. The gamma-GT levels were compared with the values for serum bilirubin, transaminases (GOT, GPT) and alkaline phosphatase in the same patients. gamma-GT values were normal in chronic persistent hepatitis and increased in chronic active hepatitis. Very high activities were measured in chronic alcoholic cirrhosis in contrast to postnecrotic cirrhosis. gamma-GT proved to be more sensitive than alkaline phosphate as an index of cholestasis and liver involvement in malignancies. It is suggested that gamma-GT activity offers valuable aid in differential diagnostics of liver-diseases. gamma-GT being an inducible enzyme, its activity may be raised by enzyme inducing drugs also in subjects without liver disease.
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PMID:Serum gamma-glutamyl transpeptidase: its clinical significance. 2 44

Percutaneous transhepatic drainage of the bile duct (PTCD) is a method that has few complications and can successfully relieve an obstructive jaundice. As a palliative drainage in malignancies of the liver and the porta of the liver it reduces the jaundice and prevents the accompanying troublesome pruritus, thus prolonging life. It reduces postoperative lethality and complications by reducing the jaundice preoperatively. Suppurative cholangitis with bile duct obstruction is quickly relieved by administration of antibiotics into the drainage.
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PMID:[Indications and results of percutaneous transhepatic bile-duct drainage]. 8 98

The quantitative distribution of the multimolecular forms of serum gamma-glutamyl-transferase is studied in 286 sera by acrylamide gel electrophoresis, incubation, coloration in situ, photography, slide reading and integration. In 43 normal sera, the fast fraction represents 66% of the total activity; the ratio of the mean fast fraction to the medium and slow fraction was 2. During pregnancy (53 cases), in cord blood (54 cases), in hepatic cytolysis or cholestasis (55 cases), and in secondary liver carcinoma (21 cases), this ratio is considerably lower, demonstrating the predominance of medium and slow fractions. A similar decrease in the ratio, with predominance of the medium and slow fractions was seen in 22 cases of advanced cancer without metastases in the liver.
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PMID:[Quantitative study of multimolecular forms of serum gamma glutamyl transferase by polyacrylamide gel electrophoresis]. 24 Oct 44

Lipoprotein-X (LP-X) in the serum of infants with persistent jaundice is indicative of cholestasis. In early infancy biliary atresia and biliary agenesis are the most common cause of cholestasis, whereas neonatal hepatitis is a less frequent cause of cholestasis. The authors introduced and described the qualitative and quantitative methods of LP-X determination for diagnostic purposes. LP-X estimations were carried out in 9 children with persistent jaundice. LP-X was found to be present in 4 infants-in 2 with complete absence of extrahepatic biliary tracts, in 1 with extrahepatic biliary atresia and in 1 with hypoplastic extrahepatic biliary tract. LP-X was also found in a 5 year old boy with mechanical occlusion of bile ducts caused by a malignant tumor ( rhabdomyoblastoma ), and in 3 year old girl with inborn enzymatic liver dysfunction. In this case LP-X concentration was estimated before and after 3 week course of cholestyramine, after which there was a 35% decrease in the LP-X concentration. In a 4 month old child LP-X was not found in spite of the absence of extra and intrahepatic biliary tracts. This finding may be explained by the far advanced hepatic cirrhosis. The authors stress the importance of introducing of LP-X estimation in the differential diagnosis of jaundice in early infancy.
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PMID:[Lipoprotein X (LP-X) in the differential diagnosis of cholestasis in children, with special reference to biliary atresia]. 26 31

It is generally accepted that the bile acids are responsible for pathologies as a result of deficiency or by toxic action. Quantitative deficiency is difficult to evaluate but the normal pool of bile acids is generally considered to be between 2 and4 grams. Daily loss and replacement by synthesis is thought to be between 500 and 700 mg. There is experimental evidence to demonstrate the toxic action of certain bile acids on metabolic structures and processes. There is no doubt that alterations in the metabolism of bile acids give rise to certain pathologic aspects in some diseases of the gastrointestinal tract or the hepatobiliary system. There are other conditions, on the other hand, in which the study of these acids may reveal significant physiopathologic implications. The first group includes terminal ileopathy, blind loop syndrome, gastric ulcer, gastritis, cholestasis, cirrhosis of the liver, and cholelithiasis. In the second group are such diverse conditions as acute pancreatitis, cancer of the colon, endocrine disturbances, some hyperlipidemias, and others. Much of the present day understanding of the physiopathology of the bile acids will probably have to be revised in the nex few years, in view of the rapid advances being made in this field.
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PMID:[Bile acids II. Physiopathologic and clinical aspects (author's transl)]. 47 Apr 97

A Teflon endoprosthesis for permanent bile drainage was inserted in 13 patients following percutaneous transhepatic puncture and catheterization of the bile duct system. Twelve patients had extrahepatic cholestasis because of a malignant tumor, whereas one patient had chronic inflammation involving the hepatoduodenal ligament (secondary to Crohn's disease) with obstruction of the extrahepatic bile ducts. The drainage periods varied from 1 week to 8 months. The endoprosthesis was regarded as partially effective in seven patients whereas in six cases the drainage through the endoprosthesis was insufficient and external bile drainage through a percutaneous transhepatic catheter was necessary. Infection of the bile duct system during the drainage period with a percutaneous transhepatic catheter and/or bile duct endoprosthesis occurred in 10 patients. Spontaneous dislocation of the endoprosthesis occurred in varying degrees in five patients. One patient developed an intrahepatic aneurysm adjacent to the puncture tract and died because of liver insufficiency following therapeutic embolization of the aneurysm and most of the hepatic arteries by injection of gelfoam particles into the common hepatic artery. Patients in whom palliative treatment by insertion of a permanent bile duct endoprosthesis may be suitable were defined.
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PMID:Percutaneous transhepatic insertion of a permanent endoprosthesis in obstructive lesions of the extrahepatic bile ducts. 51 Aug 75

In the course of 4 years, among 11,738 admissions there were 245 (2.08%) patients with cholestasis (106 women and 139 men). Intrahepatic cholestasis (i.c.) was detected in 46.5%, and extrahepatic (e.c.) in 53.5%. The most frequent cause of i.c. were alcoholic and nonalcoholic chr. liver disease (fatty liver, chr. hepatitis, cirrhosis) (37% and 30%), acute viral hepatitis (15%) and toxic liver injury (14%) respectively. The causes of e.c. were: choledocholithiasis (44%), cancer of the pancreatic head (15%), cancer of gallbladder and extrahepatic ducts (12%) and cancer of liver (10%). The causes of c. were benigne, in 78.2%, while malignant neoplasms were present in 21.8%. Out of the multitude of laboratory tests two appeared particularly significant: glut, transpeptidase was pathologic in 81% of alcoholic liver disease, in 62% of the cases with obstructive jaundice and in 27.7% of malignant neoplasms. LX-lipoprotein examined in 52 patients was positive in 24% of i.c., and 60% of e.c. Proliferation of bile ducts was the most frequent finding in surgical liver biopsies in choledocholithiasis cases.
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PMID:Differential diagnosis, laboratory tests and histology in 245 patients with cholestasis. 52 15

Various aspects of OC (oral contraceptive) use are discussed. The combination and sequential preparations are the 2 most frequently used OCs. OCs regulate hormone secretion through a "feedback mechanism" which in turn regulates ovulation. The initial choice of the type of OC to be prescribed is made according to the length and volume of and the interval between menstrual bleedings. The risk of developing thromboembolic diseases is the most freqeunt serious side effect of OC use; this is, however, influenced by several predisposing and risk factors. Hypertension has also been observed in OC users, as well as irregularities in liver function (cholestasis), the endocrine system, and glucose tolerance. There is no evidence that OC use is related to a higher incidence of cancer. Studies show that OC use has no effect on later fertility, except perhaps in the case of the abortion rate.
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PMID:[Evaluation of modern contraception]. 75 9

A brief survey of the literature on the side effects of oral contraceptives is given. Of the many influences on laboratory results those related to (reversible) cholestasis or to a change in protein synthesis are the most important ones. A decrease of the tolerance for glucose is sometimes observed. Few of the clinical side effects attributed to oral contraceptives can be directly correlated with the pharmaceutical action of these drugs. Many so-called side effects of the pill are due to other factors such as altered psychosociological or sexual behavior, etc. However, among users of oral contraceptives there is a significant decrease in the number of benign tumors, particularly of the breast, the uterus and the ovaries. It is still an open question if this also signifies protection against cancer. Anemias due to iron deficiency are less frequent among users of the pill. According to recent studies arterial hypertension and cholecystopathies are probably directly related to oral contraceptives, but a causal relation has not been proven for migraine, headaches, depression etc. An elevated risk for vascular complications seems to be well established: there is a 4-6-fold increase of the estimated risk for venous thrombo-embolism and a 4-9-fold increase for cerebrovascular accidents among users of oral contraceptives when compared with nonpregnant women of the same age not using the pill. Oral contraceptives act as a supplementary factor of risk which may cumulate with other similar factors, such as arterial hypertension, hyperlipidemia, overweight, smoking etc. Mortality due to oral contraceptives is very much 10-50 x) inferior to the one caused by delivery and the post partum state. Since the number of failures in prevention of pregnancies is less for oral contraceptives than for any other method of contraception, the overall risk of death under oral contraceptives in this age group of women is least.
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PMID:[Real and seeming side-effects of oral contraceptives with an emphasis on medical and haematological problems. Review of literature (author's transl)]. 79 Mar 74


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