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Enzyme
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Query: UMLS:C0023890 (
cirrhosis
)
42,195
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Forty-nine liver disease patients (7 chronic persistent hepatitis, CPH; 10 chronic active hepatitis, CAH; 13
liver cirrhosis
, LC; 9 primary hepatocellular carcinoma, PHC, without LC; and 10 PHC with associated LC) and 20 controls were assessed for their serum
alpha-L-fucosidase
(
ALF
) and alpha-fetoprotein (AFP) levels and several routine liver injury parameters. Tumor diameter in those with hepatic cancer was assessed by angio-CT. Only
ALF
and AFP were significantly greater in patients with PHC and PHC + LC patients as compared to patients with LC alone. At an accepted cutoff level of 500 ng/ml, the AFP level provided 43% false negative tests. On the other hand, an
ALF
level exceeding 740 mumol/hr/ml provided a sensitivity of 84% with a specificity of 94%. No relationship between the
ALF
level and Child's criteria or with any liver injury parameter was evident. Considering all individual values, the
ALF
, rather than the AFP, correlated with tumor size. This finding suggests the
ALF
level may be of value in the early detection of PHC as well as in the follow-up of patients treated for PHC.
...
PMID:Serum alpha-L-fucosidase. A more sensitive marker for hepatocellular carcinoma? 171 99
1. To assess the value of serum
alpha-L-fucosidase
(EC 3.2.1.51) as a marker for hepatocellular carcinoma, the activity was measured in patients with hepatocellular carcinoma and in control subjects. 2. Mean serum
alpha-L-fucosidase
activity was significantly greater in 35 patients with hepatocellular carcinoma (225 +/- 69 nkat/l) than in 35 patients with
cirrhosis
and 20 normal subjects (134 +/- 30 and 93 +/- 28 nkat/l, respectively). The overlap between hepatocellular carcinoma and
cirrhosis
, however, was such as to severely limit any value of the enzyme as a diagnostic test. 3. In four cirrhotic patients with hepatocellular carcinoma, an increased enzyme activity was detectable in samples taken up to 66 months before the tumours were diagnosed clinically. 4. The serum activity of
alpha-L-fucosidase
fell to within the reference range after liver transplantation for hepatocellular carcinoma in three patients and in one of these a subsequent rise was associated with tumour recurrence which was diagnosed at 8 months after the rise in activity. Ineffective cytotoxic chemotherapy was also associated with a progressive rise in serum
alpha-L-fucosidase
activity. 5.
alpha-L-fucosidase
activity in tumour tissue was significantly lower than that seen in non-tumour tissue from cirrhotic patients. These reductions may represent increased transport from the tissue and may partly account for the increased serum activity found in some patients with hepatocellular carcinoma.
...
PMID:Serum and tissue alpha-L-fucosidase activity in the pre-clinical and clinical stages of hepatocellular carcinoma. 171 88
Using spectrophotometric method, we studied the activities of serum
alpha-L-fucosidase
, N-acetyl-beta-D-glucosaminidase and alpha-D-mannosidase in 94 patients, of whom 32 had acute hepatitis, 4 subacute fulminant hepatitis, 27 chronic active hepatitis, 22 posthepatitic
cirrhosis
and 9 hepatocellular carcinoma. In comparison with normal controls, the activities of the three glycosidases in the patients were significantly increased. The degree of the elevation of
alpha-L-fucosidase
activity correlated to the clinical phases and the course of acute infection of hepatitis B virus (HBV). The levels of glycosidase activities could reflect to a certain degree the pathological variations of the liver. Monitoring the levels of glycosidase activities, especially
alpha-L-fucosidase
, would be helpful in the diagnosis and medical care of viral hepatitis and hepatocellular carcinoma.
...
PMID:Activities of serum enzymes in patients with viral hepatitis B, posthepatitic cirrhosis and hepatocellular carcinoma. 217 63
The serum catalytic concentration of
alpha-L-fucosidase
(
AFU
) was measured to evaluate its usefulness for the diagnosis of hepatocarcinoma (HPC). Fifty-one patients with hepatocarcinoma, 30 with hepatic metastases, 40 with
hepatic cirrhosis
, 22 with other hepatic diseases and 48 healthy individuals were evaluated. The values of serum
AFU
were significantly higher in all groups (p less than 0.001), than in the reference group; there were also significant differences between those with HPC and
hepatic cirrhosis
(p less than 0.01), and between HPC and other hepatic diseases (p less than 0.05). The highest effectiveness of the test was achieved with a catalytic concentration of serum
AFU
of 210 nKat/l, with a 37% sensitivity and a 91% specificity. When the
AFU
measurement was used concomitantly with that of alpha-fetoprotein (AFP) for the diagnosis of HPC, sensitivity increased to 72% when AFI or AFP were elevated, and specificity reached 99% when both were increased. We think that the measurement of serum
AFU
may be helpful for the diagnosis of hepatocarcinoma.
...
PMID:[Value of the serum measurement of alpha-L-fucosidase in the diagnosis of hepatocarcinoma]. 247 45
Serum
alpha-L-fucosidase
(
AFU
) was determined in 33 patients with hepatocellular carcinoma (HCC), 4 with secondary metastatic liver cancer, 61 with various liver diseases, 12 with gastrointestinal tumor and 50 healthy controls. The results showed that
AFU
level was significantly higher in HCC (14.48 +/- 5.77) than that in the controls (3.33 +/- 0.72) and in patient with other diseases (P less than 0.01). Serum
AFU
level was also increased in fulminant hepatitis (8.96 +/- 3.99), acute hepatitis (8.94 +/- 4.94) and chronic hepatitis (7.27 +/- 2.58), P less than 0.01 or 0.05. There was no significant difference in
AFU
level between the controls and patients with secondary metastatic liver cancer (6.25 +/- 0.84),
cirrhosis
(6.30 +/- 3.17), gastrointestinal tumor (4.43 +/- 1.64), liver hemangioma and liver abscess (4.86 +/- 2.22). A level exceeding 10.5u was a useful marker for the diagnosis of HCC with 78.8% sensitivity and 90.0% specificity. The diagnostic positivity was 81.8% in low AFP producing HCC, whereas 93.9% in those with elevated AFP. Our data indicate that serum
AFU
is a useful tumor marker for HCC, particularly in detection of AFP-low or negative HCC patients.
...
PMID:[A preliminary study on serum alpha-L-fucosidase assay in the diagnosis of hepatocellular carcinoma]. 248 Feb 10
alpha-L-fucosidase
, a lysosomal enzyme which catabolizes fucoproteins, was studied in sera from 30 controls, 32 patients with primary hepatic carcinomas, 24 patients with secondary metastatic liver carcinomas and 36 patients with
cirrhosis
. Serum
alpha-L-fucosidase
was increased in primary hepatic carcinomas (145.5 +/- 12 nkat per liter) with a high statistical significance versus controls (51.4 +/- 4.5 - p less than 10(-7], secondary metastatic liver carcinomas (58.9 +/- 6.4 - p less than 10(-5] and cirrhotics (71.3 +/- 6 - p less than 10(-5). A level exceeding 110 was a useful marker for the diagnosis of primary hepatic carcinoma with 75% sensitivity and 90% specificity.
...
PMID:Serum alpha-L-fucosidase: a new marker for the diagnosis of primary hepatic carcinoma? 620 91
The activities of several glycosidases (
alpha-L-fucosidase
, alpha-D-mannosidase, alpha-D-galactosidase, beta-D-galactosidase, beta-N-acetylglucosaminidase and beta-D-glucuronidase) were determined in human sera from 10 normal subjects and in three groups each of 10 patients with diabetes mellitus,
hepatic cirrhosis
and gastric carcinoma. The results show significantly higher activities in the patients for
alpha-L-fucosidase
(p less than 0.001) and for beta-N-acetylglucosaminidase (p less than 0.1, p less than 0.001 and p less than 0.05, respectively), and smaller or not significantly greater values for the other glycosidases.
...
PMID:Increased serum alpha-L-fucosidase and beta-N-acetylglucosaminidase activities in diabetic, cirrhotic and gastric cancer patients. 624 16
Sera from 9 persons with either biopsy-proven alcoholic liver disease or a history of chronic, excessive ethanol consumption were analyzed for their content of various hydrolases. Compared to controls, significant elevations in the following enzyme activities were seen in sera from the patient population: acid phosphatase (2.0-fold), beta-glucuronidase (2.1-fold), hexosaminidase (1.4-fold), and
alpha-L-fucosidase
(2.3-fold). In addition, alpha-mannosidase activity, previously reported to be unchanged in cases of
hepatic cirrhosis
[Reglero et al., Clinica chim. Acta 130: 155-158], (1980) was found to be significantly increased (p less than 0.001) when assays were performed at acid (pH 4.5) or intermediate (pH 5.5) hydrogen ion concentrations. Fractionation of sera on DEAE-Sephadex columns showed that the increase in alpha-mannosidase activity in the serum of patients with alcoholic liver disease was due to increases in the level of at least one 'acid alpha-mannosidase' and two intermediate pH optimum alpha-mannosidases. The general increase in the activity of a group of glycosidases is consistent with a hypothesis involving decreased clearance of glycoproteins from the blood of persons with
hepatic cirrhosis
.
...
PMID:Serum alpha-mannosidase in patients with alcoholic liver disease. 671 94
The serum level of
alpha-L-fucosidase
activity has been suggested as a useful marker in the diagnosis of hepatocellular carcinoma, although the precise mechanism behind the elevation of this parameter has not been determined. We found that the serum
alpha-L-fucosidase
activity level was significantly higher in 67 patients with hepatocellular carcinoma (695.1 +/- 245.5 nmol/ml/hr) than in 47 patients with
cirrhosis
(389.1 +/- 188.2 nmol/ml/hr; p < 0.001) and in 54 controls (202.0 +/- 104.6 nmol/ml/hr; p < 0.001). However,
alpha-L-fucosidase
activity was not correlated with tumor size (r = 0.134), whereas the alpha-fetoprotein level was correlated with tumor size (r = 0.580, p < 0.001). When 515.8 nmol/ml/hr was taken as the cutoff value (mean value in the controls plus 3 standard deviations),
alpha-L-fucosidase
activity was above the cutoff value in 12 of the 17 patients with a hepatocellular carcinoma less than 2 cm in diameter, in 28 of the 37 patients with a hepatocellular carcinoma less than 3 cm in diameter and in 52 of the 67 patients with hepatocellular carcinoma. In contrast, only 10 of the 47 patients with
cirrhosis
had levels above the cutoff value. These findings suggest that an increase in serum
alpha-L-fucosidase
activity in patients with
cirrhosis
may be a marker for detecting a hepatocellular carcinoma, especially a small tumor, because alpha-fetoprotein and des-gamma-carboxy-prothrombin are less promising as tumor markers.
...
PMID:Serum alpha-L-fucosidase activity and tumor size in hepatocellular carcinoma. 751 63
To evaluate the role of serum
alpha-L-fucosidase
(
AFU
) in the diagnosis of hepatocellular carcinoma (HCC), we simultaneously studied both
AFU
activity and alpha-fetoprotein (AFP) level in 60 patients with HCC, 60 patients with
cirrhosis
and chronic hepatitis each, 30 patients with other liver tumors and 60 healthy subjects. Serum
AFU
activity in patients with HCC (1,418.62 +/- 575.76 nmol/ml/hr) was significantly higher than that found in
cirrhosis
(831.25 +/- 261.13 nmol/ml/hr), chronic hepatitis (717.71 +/- 205.86 nmol/ ml/hr) or other tumors (706.68 +/- 197.67 nmol/ml/hr) and in controls (504.18 +/- 121.88 nmol/ml/hr, p < 0.05). With 870 nmol/ml/hr (mean value of controls plus 3 standard deviations) considered as the cut-off point,
AFU
was more sensitive (81.7 vs 39.1%) but less specific (70.7 vs 99.3%) than AFP at a level of > 400 ng/ml as a tumor marker of HCC. With both markers combined, the sensitivity was improved to as much as 82.6%.
AFU
activity in HCC patients was correlated to tumor size (r = 0.3529, p = 0.006) but not associated with tumor staging classified by Okuda's criteria (p = 0.1). The
AFU
activity in the viral hepatitis group (hepatitis B or C) was also significantly higher than in the non-viral group (p = 0.0005). We conclude
AFU
to be a useful marker, in conjunction with AFP and ultrasonography, for detecting HCC, particularly in patients with underlying viral hepatitis and
cirrhosis
.
...
PMID:Alpha-L-fucosidase as a serum marker of hepatocellular carcinoma in Thailand. 1069 98
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