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PubMed1991

Serum levels of human alkaline phosphatase isozymes in relation to blood groups.

By use of sensitive immunocatalytic assays, based on isozyme specific monoclonal antibodies, the activities of the three main human alkaline phosphatases were determined in serum. The activities were related to ABO blood groups and secretor phenotypes. The activity of intestinal alkaline phosphatase was found to be strongly correlated with ABO blood groups and secretor phenotypes, while neither the placenta alkaline phosphatase activity nor the tissue unspecific alkaline phosphatase activity demonstrated any dependence on blood groups or secretor phenotypes. Non-secretors, independent of ABO blood groups, demonstrated low activities of intestinal alkaline phosphatase in serum, amounting to approximately 20% of the activities in the secretor groups. Within the secretor group, the lowest activities were observed for blood group A (2.8 +/- 1.1 IU/l; mean +/- SEM) and the highest for blood groups B and O (14.1 +/- 1.1 IU/l and 19.0 +/- 2.5 IU/l, respectively). These results confirm that the activities of intestinal alkaline phosphatase in serum have to be related both to ABO blood groups and to secretor phenotypes in order to be informative in clinical contexts.

ABO Blood-Group System↗
PubMed1978

[Researches on the physiopathologic effects of rapeseed oil with high and low erucic acid content].

The physiopathological effects were studied of a common high erucic acid rapeseed oil as well as of Janpol, a low erucic acid oil produced of a rapeseed variety selected in Poland. Its erucic acid content equals 2.8% of total fatty acids. The studies were carried out on white male Wistar rats, 25 days old at the beginning of experiment. These animals were divided into 6 groups fed the diets in which 10 or 20% of kcal well supplied either by high erucic acid rapeseed oil, by Janpol rapeseed oil, or by the sunflower oil. The experiment lasted 6 months. Following parameters were determined: increase in body weight, the weight of selected organs, blood serum alkaline phosphatase and pseudocholinesterase activities, blood serum cholesterol and triglycerides level, the content of corticosterone in the adrenal glands and blood plasma. The liver was studied histochemically for the activity of acid and alkaline phosphatases and of ATP-ase, as well as for the presence of lipids. Morphological studies of the myocardium comprised macroscopic, histological and electron microscopic investigation. The low erucic acid rapeseed oil Janpol seems to evoke less disturbances than the high erucic acid one. Supplied in the amount corresponding to 10% of total calories intake the former exerts the effect on the biochemical and morphological parameters similar to that of sunflower oil. It can be thus assumed that the low erucic acid rapeseed oil Janpol can be used in the feeding of man when served in the amount lower than 10% of total calories.

Acid Phosphatase↗
PubMed1981

[Modification of blood serum mineral levels and aspartate aminotransferase, leucine aminopeptidase and alkaline phosphatase activity and plasma in glucose levels in healthy cattle by Ca-Mg-containing solutions].

Three high-performance cows in lactation were tested each for the effects of two kinds of infusion each, 500 ml of Tetamag-2 solution (60 g of calcium gluconate and 60 g of magnesium adipate) and 500 ml of Calcimag (100 g of calcium gluconate and 20 g of magnesium adipate), upon the levels of calcium, magnesium, Pa, potassium, and sodium as well as upon the activities of aspartate-aminotransferase, leucine-aminopeptidase, and alkaline phosphatase in blood serum and upon glucose levels in blood plasma. Migration of calcium out of blood plasma was found to take place at much higher rate than that of magnesium. Infusion of Pa and glucose was followed soon by some temporary drop of values. No directional effects were recordable from potassium and sodium. Aspartate-aminotransferase activity did not change in response to transfusion. Intravenous infusion of Tetamag-2 solution caused strong temporary rise in magnesium concentration and, consequently, activation of leucine-aminopeptidase.

Alkaline Phosphatase↗
PubMed1996

Serum total, heat and urea stable alkaline phosphatase activities in relation to ABO blood groups and secretor phenotypes.

The relationship between serum alkaline phosphatase (AP) isoenzymes, ABO blood groups and secretor phenotypes was evaluated in 125 Nigerian voluntary blood donors. The serum total AP activity patterns were group O > Group B > Group AB > Group A, but only the differences between A/B, A/O and AB/O were significant. The total and activities of the different isoenzymes were lowest in group A, while highest values were found in group O. The different activities for group AB were intermediate between the levels for A and B. The activities of the different isoenzymes tended to be higher in secretors than in non-secretors. Our results may suggest that both the blood group and secretor genes are strong determinants of AP isoenzyme patterns in Nigeria.

ABO Blood-Group System↗
PubMed1993

Human intestinal alkaline phosphatase--release to the blood is linked to lipid absorption, but removal from the blood is not linked to lipoprotein clearance.

To evaluate a possible quantitative relationship between the rise in intestinal alkaline phosphatase (IAP) activity and triglyceride-rich lipoproteins in the blood after an oral fat intake, a specific and sensitive immunocatalytic assay was used. First, day to day variation of the basal IAP activity in the blood of eight volunteers was evaluated. One group of subjects with high basal IAP activity and great variations from one day to the other was distinguished from a group with low basal IAP activity and small day to day variations. The subjects with high basal IAP activities were all secretors of red blood cell antigens, while those with low basal IAP activities were non-secretors. The IAP activity in the blood rose after fat rich meals but not after fat free meals. To further investigate this, IAP activities were measured in the blood of 28 men before 3, 6, 9 and 12 h after a standardized oral fat load of a mixed meal type. The activity rose in all individuals and showed a similar time course as the rise in plasma TG concentration. The elevations of the IAP activity were, however, not quantitatively correlated with the elevations in TG concentration, nor were there any relations in time to peak levels. Subjects with high basal IAP increased their IAP activity more than those with low basal IAP, but within neither group there was any correlation between the basal IAP activity and the rise in IAP activity. IAP did not float with lipoproteins on ultracentrifugation of plasma, nor did IAP bind to lipid droplets from a fat emulsion added to plasma.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1991

Leukocyte alkaline phosphatase and carcinoembryonic antigen in metastatic colorectal cancer patients.

Peripheral blood leukocyte alkaline phosphatase scores and plasma carcinoembryonic antigen levels in 26 patients with metastatic colorectal cancer were compared to those in 30 healthy controls. Patients had metastases to the liver and abdomen. The mean leukocyte alkaline phosphatase score in the metastatic colorectal cancer patients was significantly higher than in the control group (246 +/- 65 vs, 52 +/- 26, p less than 0.001); and the mean carcinoembryonic antigen level in the patients was also significantly higher than in the controls (110 +/- 100 vs, 4.9 +/- 3 ng/ml, p less than 0.001). One hundred percent of the metastatic cancer patients had elevated LAP scores and 73% of these patients had elevated CEA levels. There was a difference between the mean CEA levels in the patients with liver metastases and those with abdominal metastases (162 +/- 135 vs, 39 +/- 53 ng/ml, p less than 0.04). The results suggest that although both markers were elevated in metastatic colorectal cancer, the LAP score seems to be more useful in detecting metastatic disease, since we found 11% false negatives with the CEA level and 0% false negatives with the LAP score.

Abdominal Neoplasms↗
PubMedDate not supplied

Leukocyte alkaline phosphatase, CA15-3, CA125, and CEA in cancer patients.

Peripheral blood leukocyte alkaline phosphatase (LAP) scores and CA15-3, CA125, and CEA levels in plasma were measured in 57 patients with metastatic breast, ovarian, and colorectal cancer, respectively, and in 79 patients with the same types of nonmetastatic cancer. The mean LAP scores of the metastatic cancer patients (261, 272 and 275 for breast, ovary and colon, respectively) were significantly higher than those of the nonmetastatic cancer group (70, 68 and 57, respectively). There was no overlap between the 95% confidence intervals of the two groups (i.e., metastatic versus nonmetastatic), and no patient known to be metastatic had a LAP score within the normal range. The mean levels of other markers in the metastatic patients (CA15-3, 63.4 mu/ml; CA125, 104.8 mu/ml; and CEA, 51.8 ng/ml for metastatic breast, ovarian, and colon cancer, respectively) were also higher than in the nonmetastatic patients (CA15-3, 24 mu/ml; CA125, 25.3 mu/ml; and CEA, 5.8 ng/ml for nonmetastatic breast, ovarian, and colon cancer, respectively). However, the 95% confidence intervals of the nonmetastatic and the metastatic patients overlapped so that there were false-negatives and/or false-positives when the other markers were used. We therefore conclude that the addition of the LAP score to conventional cancer markers could be helpful for the diagnosis of recurrence and follow-up of cancer patients and suggest that our results be confirmed by further studies on a larger series of patients.

Adult↗
PubMed1996

Leukocyte alkaline phosphatase and serum alkaline phosphatase in patients with metastatic breast and colon cancer.

Peripheral blood leukocyte alkaline phosphatase (LAP) scores and serum alkaline phosphatase (SAP) levels in 70 patients with metastatic breast and colorectal cancer (metastases to the liver, lung, bone and abdomen) and in 18 healthy controls were measured. The mean LAP score in the metastatic cancer patients was significantly higher than in the control group (244 vs. 61) and there was no overlap between the 95% confidence level intervals of the two groups. The mean (SAP) level in the metastatic patients was also higher than in the controls (249 u/l vs. 162 u/l) but the 95% confidence level interval of the controls was inside the 95% interval of the metastatic patients meaning that considerable percentage of the metastatic patients will have a SAP level within the normal range. We conclude that of the two markers, the LAP is the better one for detection of metastatic tumors.

Abdominal Neoplasms↗
PubMed1975

An interaction between diet and blood group upon serum alkaline phosphatase activity in lambs.

Serum alkaline phosphatase activity was studied in groups of lambs fed diets containing different amounts of wheat grain and lucerne hay with different levels of supplementation with formaldehyde treated casein-sunflower seed. Total serum alkaline phosphatase activity increased more in groups fed 100 per cent wheat or 67 per cent wheat 33 per cent lucerne than in those fed 33 per cent wheat 67 per cent lucerne or 100 per cent lucerne. Supplementation of the diets with the casein-sunflower seed preparation resulted in an increase in the heat resistant proportion of serum alkaline phosphatase activity. This effect was more apparent in lambs of the r blood group (R-r-i blood group system) than in R lambs. These finds are discussed in relation to the relative heat resistance of tissue isoenzymes of alkaline phosphatase.

Alkaline Phosphatase↗