Further studies upon the nature and properties of pancreatic amylase.

  • 29 Pages
  • 0.80 MB
  • English
by , New York city
Amylases., Panc
StatementBy Margaret Hutchison Day.
LC ClassificationsQP601 .D37 1934
The Physical Object
Pagination29 p.
ID Numbers
Open LibraryOL6304059M
LC Control Number34010296

Total serum amylase is 40% from pancreatic origin and 60% from extrapancreatic sources. Therefore, some studies have shown superior specificity of serum lipase compared with serum amylase in the diagnosis of AP.

Fractionation of elevated serum amylase into pancreatic-type. Salivary and pancreatic amylase: electrophoretic characterizations and genetic by:   High amylase activity in dogs is associated with a drastic increase in copy numbers of the gene coding for pancreatic amylase, AMY2B, that likely allowed dogs to thrive on a relatively starch-rich diet during early dog gh most dogs thus probably digest starch more efficiently than do wolves, AMY2B copy numbers vary widely within the dog.

Amylase is responsible for the digestion of carbohydrates in animals. The enzyme is found in greatest quantities in the pancreas, liver, and small intestine. It is filtered by the glomerulus and resorbed by the renal tubular epithelium.

Slightly acid solutions, pH tofavor the adsorption of the amylase by alumina gel, and slightly alkaline solutions, about pHfavor the extraction of the amylase from the alumina gel by which it has been adsorbed. This is in accord with the view that pancreatic amylase is of arnphoteric nature.

A method for the preparation of α-amylase (α-1,4-glucanglucanohydrolase, EC ) from human pancreatic juice is described. Procedures utilizing (NH 4) 2 SO 4 fractionation, ion-exchange chromatography and gel filtration resulted in an amylase preparation of high purity ( maltose units per mg) and good yield (59%).

Electrophoresis on polyacrylamide disc Cited by:   The main findings of our study are: 1) pancreatic enzymes elevation occurs in paraquat poisoning; 2) the more severely deranged the pancreatic enzymes, the worse the outcome; 3) a prediction model utilizing amylase and leukocyte, neutrophil percentage and PaCO 2, is much precise than other commonly used by:   Amylase activity was measured using the Phadebas amylase test (Pharmacia Diagnostics, Zürich, Switzerland) in both pellets and supernatants and the amount of amylase released was expressed as percentage of the total amylase present in acini before the agonist stimulation (Willems et al., ).

Pancreatic amylase activities were normalized to. In order to determine whether the organic groups discussed by Rock- wood have activating effects upon salivary and pancreatic amylases when TABLE III INFLUENCE OP BENZOIC ACID, ANILINE SULFATE, BENZAMIDE, ANTHRANILIC ACID AND HIPPURIC ACID ON THE HYDROLYSIS OF STARCH BY SALIVA AND BY PURIFIED PANCREATIC AMYLASE Material added Saliva Pancreatic amylase Cuprous oxide Cuprous oxide Mg.

Details Further studies upon the nature and properties of pancreatic amylase. FB2

In the present study, the action of porcine pancreatic a- amylase has been investigated with the use of maltodextrins (G3 to Gsl) specifically labeled in the reducing glucose unit with. PANCREATIC lipase (triacylglycerol acyl hydrolase) fulfills a key function in dietary fat absorption by hydrolysing triglycerides into diglycerides and subsequently into monoglycerides and free fatty by: An important range of functions has been ascribed to the exocrine pancreas (Table 1) but very little is known about the quantitative nature of these functions in man.

The analysis and description of disturbances of pancreatic function is therefore still very by: 1. For example, in a pooled study of pancreatic cysts, 98% of pseudocysts had a cyst fluid amylase activity of greater than IU/L.

64 A study of pancreatic cysts found that 91% of pseudocysts had an amylase activity above IU/L and 85% of SCAs had an amylase activity below IU/L. 68 In another study, an amylase activity of Cited by: 9. In the present study, upon the oral administration of dihydro-resveratrol (10–50 mg/kg), the severity of acute pancreatitis in the cerulein-treated rats was significantly ameliorated as evidenced by decreased α -amylase activities in the plasma and lessened oedema formation in the pancreatic by: Amylase is stable at −20° C to −70° C (−4° F to −94° F) for storage and at least for 24 hours at 15° C to 38° C (59° F to ° F).

Much milk amylase activity remains in the duodenum after a meal of human milk. This is significant for the digestion of starch because pancreatic amylase is still low in infants. In the case of alpha-amylase inhibitors, both rats and rabbits could be chosen as in vivo models.

The question was which animal could present more accuracy with regard to its pancreatic : Masahiko Mori. PCF analysis for cytology and markers has been widely used for the differential diagnosis of pancreatic cysts 8,9,10,11, Among them, the carcinoembryonic antigen (CEA) marker demonstrates the highest diagnostic accuracy in discriminating between mucinous cyst (MC) and non-mucinous cyst (NMC) 13,14,15, Cited by: 2.

The action of pancreatic alpha-amylase (EC ) on various starches has been studied in order to achieve better understanding of how starch structural properties.

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Pancreatic amylase (site of production) pancreas. Pancreatic amylase (site of action) and more with flashcards, games, and other study tools.

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The finding of pancreatic cysts in patients without pancreas-related symptoms is mirrored by a study from our institution published in in which CT scans revealed that % of asymptomatic.

Summary. Substrates commonly used for the determination of amylase activity include potato starch, corn starch and dye-labeled starch. Determination of the amylase activity of serum using these different starches has shown that the measured value varies depending upon the ratio of isoamylases present, namely between pancreatic amylase (P-type) and salivary amylase (S Cited by: 4.

Pancreatic amylase activity has been demonstrated in amniotic fluid and pancreatic tissue from to week-old fetuses. 57,58 Although salivary amylase activity increases after term birth, pancreatic amylase activity remains low for several months after birth and usually does not reach adult levels until approximately 2 years of age.

59 Thus. Crystal structures of human pancreatic alpha-amylase (HPA) in complex with naturally occurring inhibitors have been solved. The tetrasaccharide acarbose and a pseudo-pentasaccharide of the trestatin family produced identical continuous electron densities corresponding to a pentasaccharide species, spanning the -3 to +2 subsites of the enzyme, Cited by: Other articles where Pancreatic amylase is discussed: amylase: by the salivary glands, whereas pancreatic amylase is secreted by the pancreas into the small intestine.

alpha-Amylase was purified to apparent homogeneity from normal pancreas and a transplantable pancreatic acinar carcinoma of the rat by affinity chromatography on alpha-glucohydrolase inhibitor (alpha-GHI) bound to aminohexyl-Sepharose 4B.

Recovery was % for both pancreas and tumour by: 4. α-Amylase catalyses the first step in the digestion of starch, a main source of carbohydrate in the human diet.

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Amylase present in human saliva was one. The EK book is saying that pancreatic amylase is better at hydrolyzing. I think its because the small intestine environment as well as the increased surface area of the food here, allows for the pancreatic amylase to have greater strength than the salivary amylase.

So in short, they are the same enzyme in a vacuum. Indian medicinal plants used in the Ayurvedic traditional system to treat diabetes are a valuable source of novel anti-diabetic agents. Pancreatic α-amylase inhibitors offer an effective strategy to lower the levels of post-prandial hyperglycemia via control of starch breakdown.

In this study, seventeen Indian medicinal plants with known hypoglycemic properties Cited by: Gut,19, Pancreatic andsalivary amylase/creatinine clearance ratios in normalsubjects andin patients with chronic pancreatitis J.

HEGARTY,' MARYD. O'DONNELL,2 K. McGEENEY, AND. The predominant effect of secretin on the pancreas is to stimulate duct cells to secrete water and bicarbonate.

As soon as this occurs there is an increase in flow and the enzymes secreted by the acinar cells are carried out of the pancreas, through the pancreatic duct into the duodenum. To increase specificity in the clinical determination of amylase, the differential activities of human pancreatic and salivary amylases toward two different substrates—a Lintner soluble starch (LSS) and an insoluble, dyed starch, Amylose Azure (AA)—were investigated.

A ratio of initial-velocity activities of Lintner soluble starch to Amylose Azure (LSS/AA) for salivary amylase Cited by: Start studying Digestive Enzymes. Learn vocabulary, terms, and more with flashcards, games, and other study tools.alpha-amylase activity Source: UniProtKB Ref "Subsite mapping of the human pancreatic alpha-amylase active site through structural, kinetic, and mutagenesis techniques.".