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PubMed1989

[The impact of antituberculosis drugs upon liver function in patients with positive HBVM].

Through the liver function analysis of 100 tuberculosis cases in the course of antituberculosis chemotherapy the authors found that the abnormal liver function rate turned to be 50% in the positive HBVM Group but only 2.4% in the negative, HBVM Group. There is a significant statistical difference between the two groups of cases (P less than 0.01). For this reason, the authors suggested the HBVM should be determined one by one before taking the antituberculosis chemotherapy in the area with high incidence of B-type hepatitis, the data indicated clearly that, the abnormal phenomena of liver function after the antituberculosis treatment for those patients, mainly caused by the drugs.

Adult↗
PubMed1990

Hepatic vein reconstruction for preserving remnant liver function.

Hepatic malignancies often infiltrate to the major hepatic vein. Recently, we performed hepatic resection combined with hepatic vein reconstruction for preserving remnant liver function in three such patients. One patient had a saphenous vein graft. Postoperative liver function of the patients who underwent hepatic vein reconstruction was compared with those of eight patients who underwent hepatic resection of segments VII and VIII. The right hepatic vein in four of them was resected and in the remaining four was preserved by skeletalization using an ultrasonic aspirator. Although four patients with right hepatic vein resection showed severe lowering of liver function after surgery, the postoperative course of patients with preservation or reconstruction of the right hepatic vein maintained good liver function. Liver regeneration of three patients with hepatic vein reconstruction was good on computed tomography. Besides this report, to our knowledge, there is no other report of hepatic vein reconstruction for preserving the remnant liver function. Problems with hepatic resection combined with hepatic vein reconstruction are discussed. We conclude that hepatic vein reconstruction is one of the means for extending indication of the malignant tumor resection of the liver.

Adult↗
PubMed1991

Effects of tetrahydroaminoacridine on liver function in patients with Alzheimer's disease.

Detailed liver function test analysis is reported for 30 patients with Alzheimer's disease who were treated with tetrahydroaminoacridine. Results show that a benign elevation of aspartate transaminase occurs in up to 50% cases, that the reaction can be a symptomatic one and that clinical hepatitis can occasionally result. Liver function test changes appear dose-dependent and normalize within 2-4 weeks of stopping the drug or of reducing the dose. Women appear more likely to develop hepatotoxicity than men. Rechallenge with THA in patients previously showing abnormalities in liver function shows that some patients are able to tolerate the drug a second time.

Aged↗
PubMed1988

Experimental study of iron effect on the liver function.

The effect of iron on the liver function was studied in rats. A total of 40 rats were divided into four groups. Group 1 was given iron; Group 2, carbon tetrachloride; Group 3, a combination of iron and carbon tetrachloride; and Group 4 was the control. The changes in liver function were evaluated by using hepatobiliary and liver scintigraphy as the index of hepatocyte function and reticuloendothelial system function, respectively. Determination of liver CT number and a histological study were made at the same time. The administration of iron activated the reticuloendothelial system function per unit of liver weight. However, because of the decrease in liver weight, the total reticuloendothelial system function did not change at all. In the group given iron and carbon tetrachloride, liver cirrhosis and siderosis in the reticuloendothelial system occurred. Dysfunction in the reticuloendothelial system was more severe in this group than in the group given carbon tetrachloride only, by hepatocyte dysfunction was more mild. It is doubtful that the administration of iron after liver dysfunction had developed, which caused acceleration of fibrosis and reduction of liver blood flow, led to the enhancement of the reticuloendothelial system dysfunction.

Animals↗
PubMed1985

Evaluation of liver function in an improved model of isolated liver perfusion.

A perfusion system was described for maintaining isolated guinea pig livers in a stable functional state for five hours. Oxygen supply, oxygen consumption, as well as perfusate flow were within physiologic limits. Liver function was investigated by means of indocyanine green elimination and galactose elimination. Both test substances showed no significant decrease in liver function throughout perfusion. Isolated liver perfusion is a useful tool to investigate problems in organ preservation and liver transplantation.

Animals↗
PubMed1992

Erythromycin base-induced rash and liver function disturbances.

OBJECTIVE: To report a case of erythromycin base-induced rash and liver function disturbances. CASE SUMMARY: A patient with erythema nodosum and high antistreptolysin-O titers was treated with erythromycin on the assumption that occult streptococcal infection was the cause of the erythema nodosum. Forty-eight hours after the initiation of therapy the patient developed fever, severe generalized rash, pruritus, and cholestatic and hepatocellular liver function disturbances. Extensive evaluation to determine the cause of liver function disturbances was unrevealing. Marked improvement was noticed within days after cessation of erythromycin. DISCUSSION: Case reports in the literature on the adverse effects of erythromycin and its derivatives were reviewed. The possible immunologic mechanism involved is postulated. CONCLUSIONS: Erythromycin base must be added to the list of erythromycin derivatives that can cause rash and liver function disturbances. The concomitant appearance of fever, rash, jaundice, and liver function disturbances raises the possibility of hypersensitivity as the mechanism for the liver disturbances.

Adult↗
PubMed1979

Viral exposure and abnormal liver function in haemophilia.

Several studies have recently documented the presence of persistently abnormal liver function tests in asymptomatic haemophiliacs. While the aetiology is unknown it is possible that repeated exposure to agents transmitted in blood products may be important. This study has attempted to determine the prevalence of viral exposure and its relationship to liver function in this multitransfused group of individuals. The prevalence of viral antibodies with the exception of antibody to hepatitis B surface antigen (anti-HBs) and cytomegalovirus (CMV) was normal when compared to that in the general population. Hepatitis B surface antigen (HBsAg) was not detected, but anti-HBs was found in 83% of patients; 50% of patients had abnormal liver function. However, liver function tests were normal in all patients with mild haemophilia and were only rarely abnormal in patients who had no detectable antibody to CMV, Epstein-Barr virus (EBV), and HBsAg. This study demonstrates that multiple transfusions of blood products, that is, cryoprecipitate and factor concentrates, do not increase the risk of exposure to the viruses studied with the exception of hepatitis B virus.

Adolescent↗
PubMed1986

Serum bile acid concentrations as a liver function test in workers occupationally exposed to organic solvents.

Liver injury has long been associated with occupational exposure to a wide variety of chemicals. The controversial data existing in relation to hepatotoxicity of organic solvents might be explained as a consequence of the different exposures or it may well be that the tests used for evaluating liver function might not be sensitive enough to detect any mild changes at an early stage. To study liver function during exposure to solvent mixtures, we determined serum bile acid (SBA) concentrations as compared with conventional liver function tests in a selected group of workers (n = 30) occupationally exposed to a mixture of organic solvents (mostly toluene, xylene, acetone, n-butylacetate, n-butanol, ethylacetate) and in a reference group (n = 20). The mean levels of liver enzyme activities and bilirubin concentrations in the two groups were similar, whereas mean SBA levels increased in the exposed group (8.0 +/- 6.0 mumol/l vs 2.8 +/- 1.4 mumol/l) and the difference as compared with the controls was significant (P less than 0.01). In 73% of the exposed workers, SBA levels were higher than 5.6 mumol/l (the cut-off value) as compared with 5% of the controls. These results demonstrate the higher sensitivity in detecting liver dysfunction achieved with the SBA test as compared with conventional hepatic function tests. As increased SBA concentrations are considered to reflect an impairment of anion transport across the liver, higher SBA levels in the group of workers exposed to organic solvents might be explained as a slight and early sign of liver dysfunction. Therefore, SBA determination in biological monitoring of workers exposed to potentially hepatotoxic chemicals might be proposed.

Adult↗
PubMed1992

Assessment of liver function using a novel galactose single point method.

A novel, simple, clinically useful quantitative liver function test, called the galactose single point (GSP) method, was developed by measurement of galactose blood concentration 1 h after galactose was administered (0.5 g/kg). It was quickly infused intravenously in 55 normal healthy volunteers, 73 patients with chronic hepatitis (CH), 36 with cirrhosis and 41 with hepatocellular carcinoma (HCC). Patients with CH diagnosis were assessed by liver biopsy. Cirrhosis was diagnosed by histological examination or a chronic hepatitis history with esophageal varices or ascites, whereas HCC was diagnosed either histologically, or cytologically proved, or as implied in the 'one imagine study' being positive with AFP > 300 ng/dl. Highly significant galactose blood levels were observed between normal healthy volunteers and patients 50, 60 and 70 min after galactose was administered. Galactose elimination capacity (GEC), modified GEC (MGEC) and consecutive GSP tests were performed in 6 healthy volunteers for 2 days. 0.64-16.87% variation was observed for each subject. The significant differences (p < 0.001) in average GSP values were 247 +/- 18.1, 422 +/- 27.3, 629 +/- 42.8 and 579 +/- 43.6 micrograms/ml for normal healthy volunteers, CH, cirrhosis and HCC patients, respectively. Highly significant correlations (p < 0.001) were obtained among GSP, GEC and MGEC for all patients. Positive correlations were observed between GSP, GEC, MGEC and AST (serum aspartate aminotransferase), ALT (serum alanine aminotransferase), serum bilirubin, albumin, prothrombin time and r-globulin. According to results obtained from 202 normal healthy volunteers and patients, the GSP method may be a simple, clinically useful quantitative measurement of liver function for the determination of a patient's residual liver function, the prognosis of liver function for patients with cirrhosis, postoperational follow-up and, finally, the timing of a liver transplant.

Adult↗
PubMed1988

[Loss of renal functional reserve following kidney transplantation and in patients with advanced disorders of liver function].

Renal functional reserve capacity was evaluated in healthy controls, kidney transplant recipients and patients with impaired liver function by simultaneous measurements of periodic clearances of inulin, PAH and creatinine every 30 minutes before, during and after infusion of an amino acid (AA) solution. During AA infusion glomerular filtration rate rose in 10 healthy controls to about 35% above basal values (inulin clearance from 107 +/- 6 to 144 +/- 7 ml/min, p less than or equal to 0.0005), renal plasma flow increased by 27% (PAH clearance from 530 +/- 25 to 675 +/- 40 ml/min, p less than or equal to 0.002). 8 renal transplant recipients with good and stable renal function (creatinine clearance above 65 ml/min) showed no rise in GFR and RPF, as did 10 patients with severe impairment of liver function and normal basal kidney function (creatinine clearance above 100 ml/min). The lack of renal functional reserve in kidney transplant recipients might indicate a hyperfiltration of the transplanted kidney. This could affect the longtime prognosis of these patients. The liver seems to play a role in the mediation of the amino acid-induced rise of GFR, supporting the hypothesis of a putative liver hormone regulating GFR after protein ingestion or AA infusion.

Adult↗
PubMed1992

Liver function in acute viral hepatitis as determined by a hepatocyte-specific ligand: 99mTc-galactosyl-neoglycoalbumin.

Twelve patients with recently diagnosed acute viral hepatitis underwent serial 99mTc-galactosyl neoglycoalbumin scanning of the liver (for up to 8 mo). Injection of 99mTc-galactosyl neoglycoalbumin (150 mBq) at a rate of 3.5 mg (50 nmol; 1 ml) revealed that the liver is the exclusive site of tracer uptake. Simulation of 99mTc-galactosyl neoglycoalbumin kinetics allowed quantification of galactosyl neoglycoalbumin binding to human hepatic binding protein. Return of liver function test scores to normal values was associated in two patients with hepatitis A, in four patients with hepatitis B and in two patients with non-A, non-B hepatitis virus infection, with increases in hepatic binding protein concentration (up to three times the initial concentration), binding rate constant and hepatic blood flow. In the other four patients (three patients with hepatitis B and one patient with cytomegalovirus infection) a prolonged course of disease was monitored. In the mean, hepatic binding protein increased from 0.41 +/- 0.11 mumol/L after onset of acute hepatitis (n = 12) to 0.78 +/- 0.21 mumol/L after 6 mo of follow-up (n = 10) (p less than 0.001). During this period, binding rate constant (72.4 +/- 12.6 vs. 82 +/- 11.5 mumol/L/sec; p less than 0.05) and hepatic blood flow (0.027 +/- 0.0051 vs. 0.031 +/- 0.0083 L/sec; p less than 0.05) increased. Hepatic binding protein concentration correlated highly with actual laboratory test results for liver function (r = 0.98; p = 0.0001). We conclude that scintigraphic evaluation of functional liver cell mass using the new receptor-tracer 99mTc-galactosyl neoglycoalbumin could provide an in vivo diagnostic means of quantifying liver function and assessing liver morphology. In addition, our findings suggest that changes in hepatic binding protein-receptor concentration are likely to occur in vivo.

Acute Disease↗
PubMed1986

Effects of total and selective portasystemic shunting on hepatic haemodynamics and some aspects of liver function in the cirrhotic rat.

The effects of total and selective portasystemic shunting on hepatic haemodynamics and some aspects of liver function were studied in rats with dimethylnitrosamine-induced cirrhosis. Immediately following end-to-side portacaval shunting there were significant reductions in wedged hepatic venous pressure (WHVP) and liver blood flow. After side-to-side mesocaval shunting liver blood flow and wedged hepatic venous flow fell by approximately the same magnitude. Selective shunting (mesocaval 'H'-grafts and splenopancreaticocaval) preserved liver blood flow to a greater extent than total portasystemic shunting but had a less marked effect on WHVP. Furthermore, selective portasystemic shunting prevented liver atrophy and deterioration in liver function which was observed in rats following total portasystemic shunting. These results suggest that in the cirrhotic rat, selective portasystemic shunts which preserve functional liver blood flow and prevent liver atrophy and a deterioration in liver function do not produce such a marked decrease in WHVP as total shunts. Further studies in man are required to evaluate the relative advantages of total and selective portasystemic shunts.

Animals↗
PubMed1989

[Beta receptor blockade and liver function].

The effects of propranolol on liver functions of healthy rats were studied administering daily doses of 1 mg/kg. Beta receptor blockade has been investigated in carbontetrachloride induced liver cirrhosis. Normal liver functions were unchanged with the exception of an increase in Glucos-6-Phosphatase. The severe cirrhotic injuries were counteracted or moderated when propranolol administration started the same day as CCl4 injection. The amount and function of mixed-function-monooxygenases were normalised. Carbohydrate and protein metabolism impairments were moderated. Serum triglyceride and HDL-cholesterin levels were however uninfluenced. The metabolic properties of propranolol seem to be advantageous in chronic liver impairments.

Animals↗