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L Chrostek

Publications and source records attributed to L Chrostek.

34 records · Page 2Linked to original sources
PubMed1997

Alcohol dehydrogenase (ADH) activity in the sera of patients during the course of viral hepatitis.

Total alcohol dehydrogenase activity in the sera of 77 patients in the course of viral hepatitis was determined by means of photometric method based on p-nitrosodimethylaniline reduction. Blood samples were taken 5 times at intervals of 7 to 9 day. We found that serum total ADH activity was higher at the onset of disease than that of the control group. The highest increase of activity was observed in the first week of hospitalisation, and exceeded the mean control value about 7 times. After that, the activity of ADH gradually decreased, and reached the value of the control group in the last period of the study. During five weeks of the study the total activity of ADH showed a good linear correlation with alanine and aspartate aminotransferases. We concluded that total alcohol dehydrogenase activity measured by photometric method increase in the course of viral hepatitis and correlate with the progress and treatment of disease measured by commonly accepted enzymatic markers of liver cell damage.

Adolescent↗
PubMed1996

Human alcohol dehydrogenase isoenzyme activity in the sera of non-alcoholic liver cirrhotic patients.

The activities of class I and II alcohol dehydrogenase isoenzymes were examined in the sera of patients with non-alcoholic liver cirrhosis using a fluorometric method. The analysis of these results shows a statistically significant increase (2,5-times) in the activity of class I alcohol dehydrogenase, and no marked differences in the activity of class II in cirrhotic and control patients. The observed increase in total enzyme activity measured using a photometric method was not very high but confirmed the elevation of class I isoenzyme activity. Activities of both classes of alcohol dehydrogenase isoenzymes have a good correlation with aspartate aminotransferase. Class II isoenzyme activity additionally correlates with alkaline phosphatase. These results suggest that serum activity of class I alcohol dehydrogenase is a better indicator of liver cell destruction during non-alcoholic cirrhosis than total enzyme activity, and is comparable with the value of aspartate aminotransferase.

Adult↗
PubMed1996

[Human alcohol dehydrogenase].

The paper presents the new aspects of structure and kinetics of alcohol dehydrogenase. The differences in substrate specificity of isoenzymes are broadly discussed. The newly discovered gastric alcohol dehydrogenase is also mentioned.

Alcohol Dehydrogenase↗
PubMed1996

Human serum alcohol dehydrogenase isoenzymes as a markers of liver injury during viral hepatitis.

We examined the activity of class I and II of alcohol dehydrogenase isoenzymes in the sera of patients with viral hepatitis using fluorogenic substrates, 4-methoxy-1-naphthaldehyde for class I and 6-methoxy-2-naphthaldehyde for class II. It was found that serum activities of class I and II of alcohol dehydrogenase isoenzymes during five weeks of hospitalisation were higher than that of control. The greatest increase in activities was found at the onset of disease, and exceeded the mean control value about 30 times for class I and 4 times for class II. These were lower than the aminotransferase activities but higher than the activity of lactate dehydrogenase, alkaline phosphatase and gamma-glutamyltransferase. In the following periods of investigation the activity of alcohol dehydrogenase isoenzymes gradually decreased, but did not reach the values of the control groups in the last period of the study. Activity of class I and II of alcohol dehydrogenase isoenzymes showed a good correlation with alanine and aspartate aminotransferase and lactate dehydrogenase in the first weeks of the illness. These results clearly demonstrate that particularly the activity of class I of alcohol dehydrogenase isoenzymes measured by a fluorimetric method can be a useful marker of liver cell damage in the course of viral hepatitis.

Adolescent↗
PubMed1995

Serum class I and II alcohol dehydrogenase activity during the course of viral hepatitis.

We examined the activities of class I and II alcohol dehydrogenase isoenzymes in the sera of patients with viral hepatitis using the fluorogenic substrates 4-methoxy-1-naphthaldehyde for class I and 6-methoxy-2-naphthaldehyde for class II. It was found that serum activities of class I and II alcohol dehydrogenase isoenzymes over the course of five weeks of hospitalisation were higher than those of controls. The greatest increase in activities was found at the onset of disease, exceeding the mean control value by about 30 fold for class I and 4 fold for class II. These activities were lower than that of aminotransferase but higher than those for lactate dehydrogenase, alkaline phosphatase and gamma-glutamyltransferase. Thereafter, the activity of alcohol dehydrogenase isoenzymes gradually decreased, but did not reach the values of the control groups in the last period of the study. Activities of class I and II alcohol dehydrogenase isoenzymes correlated well with those of alanine and aspartate aminotransferase and lactate dehydrogenase in the first weeks of illness. These results clearly demonstrate that especially the activity of class I alcohol dehydrogenase isoenzyme measured by a fluorimetric method can be a useful marker of liver cell damage in the course of viral hepatitis.

Adolescent↗
PubMed1994

Activity of class I and II alcohol dehydrogenase in the sera of alcoholics.

The activity of class I and II alcohol dehydrogenases in the sera of alcoholics was estimated using specific and highly sensitive fluorogenic substrates. It was found that serum class I activity was increased about 2 fold above that of the control group. No such increase was observed in the activity of class II, and we did not find a significant difference in non-alcoholics. The total alcohol dehydrogenase activity measured by classical spectrophotometric methods at pH 9.2 confirmed the increase of class I alcohol dehydrogenase. Additionally, the activity of liver injury markers were detected. Only gamma-glutamyltransferase activity exceeded the normal range. Based on the results of the present study, we would suggest that the significant elevated serum activity of class I alcohol dehydrogenase may be derived not from liver cells, because they did not display the obvious enzymatic markers, but from different organs, especially the gastrointestinal tract. The tissue distribution of alcohol dehydrogenase isoenzymes and gamma-glutamyltransferase would help to confirm this possibility.

Adult↗
PubMed1994

The effect of endotoxin on alcohol dehydrogenase (ADH) activity in the serum of ethanol intoxicated rats.

Serum alcohol dehydrogenase activity at different pH-values (8.8, 9.6 and 10.4) was investigated in induced endotoxemia (3 mg/kg) after chronic alcohol consumption in rats (60 days, 11.5 mg/kg, per day). It has been shown that ADH activity is higher after the single than after the triple injection of endotoxin given the healthy rats. Such a difference was not observed in the ethanol-intoxicated rats. The single dose of endotoxin did not maintain the increased ADH activity after alcohol administration, however a triple injection of endotoxin maintained the activity but did not increase. This results show, that the highest ADH activity in all tested rats was observed at pH 9.6 and that chronic ethanol consumption did not cause an increase of the toxic effects of endotoxin on liver cells, measured by serum alcohol dehydrogenase activity.

Alanine Transaminase↗
PubMed1992

Influence of endotoxin on experimental post-alcoholic liver injury.

The morphological and biochemical changes of the liver after endotoxin intake were analyzed in rats receiving 20% ethanol during 60 days. Besides morphological changes, concentration of serotonin and histamine in liver homogenates, the activity of asparagine and alanine aminotransferases (AspAT, ALAT), gamma-glutamyltranspeptidase (GGTP) and alcohol dehydrogenase (ADH) in blood serum were determined, too. The most extensive morphologic changes of the liver were seen in group of animals intoxicated with 20% ethanol during 60 days and single dose of endotoxin E. coli 0127:B8 intraperitoneally. These changes included necrosis most hepatocytes, focal steatosis of liver parenchyma, considerable hyperemia and parenchymatous degeneration of the liver cells. The cells lining liver sinuses showed considerable swelling as well as necrotic changes. Figures of cell division and haemorrhagic focuses were seen, too. The clusters of mononuclear cells, surrounding necrotically changed hepatocytes were seen in the central part of the liver lobule. Among the inflammatory mediators estimated in liver homogenate only serotonin reached a high level in the group of experimental animals receiving only endotoxin. Increased activity of aminotransferases AspAt and ALAT were associated with these morphologic and biochemical changes in liver tissue observed in animals receiving ethanol and endotoxin.

Alcohol Dehydrogenase↗
PubMed1990

Cord blood triglyceridemia in cases of placental insufficiency.

Cord blood triglyceride concentration increased in cases of placental insufficiency. The significant relationship has been found between elevated triglyceride, decreased Apgar score, and low pH values. We suggest that the measurement of cord blood triglyceridemia might be used as a valuable indicator of chronic fetal distress.

Apgar Score↗
PubMed1990

Measurement of serum alcohol dehydrogenase activity at different pH-values during the course of viral hepatitis in children.

Serum alcohol dehydrogenase activity was estimated at pH 10.4 (optimum for the typical liver isoenzyme), 8.8 (optimum for atypical liver isoenzyme), at the physiological serum pH of 7.4, and at pH 9.2, with a view to obtaining the greatest possible difference between patients and controls. Measurements were performed on the sera of 39 children aged from 2 to 13 years, using the Technicon analyzer RA-1000 with the continuously measuring method of Bonnichsen & Brink. Blood sera were tested at the onset of viral hepatitis, in the first week of hospitalization, and three times thereafter at intervals of 7 to 9 days. During the illness, the activity of serum alcohol dehydrogenase, measured at different pH-values, was higher than that of controls. The ratio of activity at pH 10.4 to activity at pH 8.8 in the sera differed from that previously reported for liver cells. The highest increase in alcohol dehydrogenase activity was at pH 9.2. The diagnostic sensitivity of alcohol dehydrogenase determination at this pH is lower than that of alanine aminotransferase, gamma-glutamyltransferase and aspartate amino-transferase, but higher than that of lactate dehydrogenase, alkaline phosphatase and bilirubin; alcohol dehydrogenase activity also shows the best correlation with the activity of gamma-glutamyltransferase.

Adolescent↗
PubMed1988

An increase of collagen biosynthesis precedes other symptoms of ethanol-induced liver damage in rats.

Treatment of rats with 10% ethanol for 6 months induced a 3-4-fold increase of [3H]proline incorporation into liver collagen and enhanced the level of prolyl hydroxylase activity in liver and serum of intoxicated rats. Several diagnostic tests used to assess liver disease failed to demonstrate any symptom of liver damage. Therefore, increased collagen biosynthesis appears to precede other symptoms of liver damage induced by ethanol.

Animals↗
PubMedDate not supplied

[CDT (desialylated transferrin)--a new biochemical marker of alcohol abuse].

Serum concentration of carbohydrate-deficient transferrin (CDT) is used for laboratory diagnosis of chronic alcohol abuse. Several earlier studies reported sensitivities of 90% or above for CDT, with a specificity of 90-100%, although other investigators found lower sensitivities. In general, CDT has been reported to be highly specific (92%) and relatively sensitive (80%) for the detection and monitoring of alcoholism. There are no correlation between CDT concentration and gamma-GT activity. Any alteration in serum total transferrin concentration markedly decreases the CDT assay specificity. This should be considered when interpreting the assay results in patients with elevated serum transferrin. There are differences between the CDT isoforms (asialo-Tf and monosialo-Tf) in males and females relative to alcohol consumption. Alcohol consumption increases the levels of asialo-Tf and monosialo-Tf in women more strongly than in men. Sensitivity of CDT assay is also related to age of patients. There is a significantly higher sensitivity of CDT in patients above 40 years of age as compared to younger patients. The measurement of carbohydrate-deficient transferrin may be used as a marker of excessive alcohol abuse in patients with liver diseases (also in cirrhosis). The specificity of CDT in patients with non-alcoholic liver disease was consistently higher than that of gamma-GT (80% vs 60%). Disulfiram therapy during detoxification does not influence the serum level of CDT.

Adult↗
PubMedDate not supplied

The effect of glucocorticoids on the development of murine granulocyte-macrophage (GM) progenitors.

The effect of glucocorticoids was tested on the hematopoietic system by assay of the ability of granulocyte-macrophage colony forming cells (GM-CFC) in mice to create GM colonies. The in vivo ability of bone marrow progenitor cells to granulocyte-macrophage colony formation was tested after long-term peritoneal glucocorticoids administration. The direct effect of these agents on cells in vitro culture was evaluated also. It was found that glucocorticosteroids inhibit the GM colony formation. The degree of damage to the bone marrow progenitor cells assaying by in vivo colony formation inhibition depends on the drug dosage and the length of therapy. The in vitro inhibition of granulocyte-macrophage colony formation depends on the concentration of the drug. The results suggest the possibility of the GM-CFC growth testing as an indicator of the side effects of prolonged corticoid therapy.

Animals↗
PubMedDate not supplied

[Enzymatic diagnosis of alcoholism-induced damage of internal organs].

++Post-alcoholic lesion of liver, pancreas, and heart muscle was estimated by measurement of some enzymes activity. Alcoholic in-patients were divided into two groups in regard to the age and the length of the disease. The activity of enzymes in the blood was measured by kinetic methods using the RA-1000/Technicon analyser. It was shown that the increase of activity of alanine aminotransferase (AlAT), gamma-glutamyltransferase (GGTP), and alcohol dehydrogenase (ADH) may indicate the ++post-alcoholic liver damage, while increase of activity of alpha-+-amylase and ++leucine aminopeptidase (LAP) may be useful for the diagnosis of pancreas lesion, and creatine kinase (CK) as well as lactate dehydrogenase (LDH) for the evaluation of postalcoholic lesion of the heart muscle.

Adult↗