(15) observed in a study of 192 patients that 26% (n=18) of all hyperamylasemia patients (n=70) had an elevation of the pancreatic
isoamylase fraction, and the remaining 74% (n=52) of the patients were hyperamylasemic due to elevations in the non-pancreatic
isoamylase fraction or to both the pancreatic and non-pancreatic
isoamylase fractions.
Bai et al., "Cycloamylose production from amylomaize by
isoamylase and Thermus aquaticus 4-[alpha]-glucanotransferase," Carbohydrate Polymers, vol.
Total amylase and pancreatic
isoamylase in serum and urina: considerations from data on biological variation.
The debranching group (
isoamylase and pullanase) breaks a 1-6 glycoside linkage in amylopectin of starch.
Degradation of starch into a variety of different products is performed by amylolytic enzymes, such as [alpha]-amylase, glucoamylase, [beta]-amylase,
isoamylase, pullulanase, exo-1,4-[alpha]-D-glucanase, [alpha]-D-glycosidase, and cyclomaltodextrin-D-glucotransferase [3].
Bohe, "Severe acute pancreatitis and normal serum amylase activity due to pancreatic
isoamylase deficiency," Digestive Diseases and Sciences, vol.
Production of maltose from starch by simultaneous action of beta- amylase and Flavobacterium
isoamylase. Starch Starke 32: 352-355.
Amylase exists in two forms: pancreatic
isoamylase (40%) and salivary
isoamylase (60%).
Evaluation of an inhibitor assay to determine serum
isoamylase distribution.
The other additives that were re-evaluated are acidified sodium chlorite, carrageenan and processed Eucheuma seaweed,
isoamylase from Pseudomonas amyloderamosa, phospholipase A1 from Fusarium, venenatum produced by Aspergillus oryzae and steviol glycosides.
Ma YJ, Lin LL (2000) Efficient utilization of starch by a recombinant strain of Saccharomyces cerevisiae producing glucoamylase and
isoamylase. Biotechnol.
Serum
isoamylase level is low at all ages and trypsinogen level is low below the age of three years.
