Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0030305 (pancreatitis)
 16,014 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Plasma pancreatic glucagon concentrations were determined in the basal state and after the infusion of alanine in 10 patients with acute pancreatitis (5 in an initial episode of pancreatitis), in 10 patients with chronic pancreatic insufficiency, and in 21 healthy controls. In acute pancreatitis, basal glucagon levels were nine times normal but were higher during the initial attack than with a history of previous attacks. The glucagon response to alanine was also increased threefold to fourfold in initial attacks. In contrast, after recovery from the initial attack of acute pancreatitis, during acute episodes of pancreatitis in patients with a history of previous attacks, and in patients with pancreatic insufficiency, alanine failed to elicit a consistent rise in plasma glucagon. The data suggest that hyperglucagonemia may contribute to the hyperglycemia of acute pancreatitis, particularly during the initial episode. Loss of alpha cell responsiveness to alanine provides a sensitive index of previous pancreatitis.
 ...
PMID:Glucagon secretion in acute and chronic pancreatitis. 120 May 23

The present paper reports on the perioperative metabolic changes in a 70-year-old female patient in whom an acute (oedematous) pancreatitis occurred during the transduodenal excision of a villous adenoma of the duodenal papilla. Since blood was taken for metabolic investigations before, during and after surgery, data on the changes in the intermediary metabolism during the early phase of acute pancreatitis in humans was recorded. Raised activity of the pancreatic enzymes amylase and lipase was demonstrable just minutes after extirpation of the papillary tumour after intraoperative cholangiography had been performed via a choledochotomy. This showed occlusion of the duodenal papilla as well as imaging the pancreatic duct. The reflux of bile into the pancreatic duct is considered to be one of the causative factors of acute pancreatitis (Opie-syndrome). The following metabolic changes were registered at surgery and on the first day thereafter: reduction in the serum concentration of cholesterol ester, the triglycerides and the phospholipids by 30 to 50% of the preoperative values respectively, as well as lactacidaemia (up to 60 mg/dl). At the same time, the serum bilirubin concentration and the concentrations of the amino acids alanine and glutamate in the serum were temporarily raised. The question is, whether these metabolic changes were a direct consequence of the activity of the pancreatic enzymes of amino acid and lipid metabolism that were released into the blood, or whether reduced synthesis by the liver (lipoproteins, lecithin: cholesterol-acyl-transferase) was responsible for these changes.
 ...
PMID:[Metabolic changes in a patient in the early phase of acute pancreatitis]. 137 26

The diagnostic values of CA 19-9 and CEA were evaluated in 187 cases (including 31 gastric, 41 colorectal, 12 pancreatic, 7 hepatobiliar and 5 hepatocellular carcinomas). These tumor markers were compared to the other laboratory parameters [hemoglobin, erythrocyte sedimentation rate, serum bilirubin, ASAT (aspartate amino transferase), ALAT (alanine amino transferase) GGT (gamma glutamil transpeptidase), ALP (alkaline phosphatase)]. The specificity of CA 19-9 was 89.5%, while the sensitivity of this tumor markers was 91.7% in pancreatic carcinoma, 54.8% in gastric carcinoma and 43.9% in colorectal carcinoma. The sensitivity of CEA only in colorectal patients was higher than that of CA 19-9 (specificity 73.9%, sensitivity 64.5%). Although the CA 19-9 and CEA are not known to give any cross-reaction with each other, simultaneous measurement and evaluation of these two tumor antigens did not result in a better diagnostic sensitivity. After undergoing a gastrointestinal carcinoma operation, CA 19-9 indicated the appearance of tumor recidiva with a 62% sensitivity. Calculated together with CEA the sensitivity elevated to 88.9%. In most of the patient with benign cholostasis, the CA 19-9 and CEA values were out of the normal range (53.3% and 36.4% respectively), so these tumor markers are not suitable to differentiate between benign and malign cholostasis. According to the authors, CA 19-9 is the most useful diagnostic tool to differentiate between pancreatic carcinoma and pancreatitis chronica (both group without cholostasis), as well as for monitoring the patients after surgery of a gastrointestinal cancer.
 ...
PMID:[Diagnostic value of CA 19-9 and CEA in gastrointestinal pathology]. 160 81

Human pancreatic colipase is secreted as the inactive form procolipase. Activation involves tryptic cleavage of an N-terminal pentapeptide Ala-Pro-Gly-Pro-Arg (APGPR) which is known as procolipase activation peptide (CLAP). N-terminally haptenised synthetic APGPR was used to generate specific C-terminally directed anti-APGPR antibodies. The antiserum was used to develop a competitive enzyme linked immunosorbent assay (ELISA) specific for free CLAP with a detection limit of 12 nmol/l and an intra-assay coefficient of variation (CV) of 3.28% and an inter-assay CV of 5.82%. The release of immunoreactive CLAP from human pancreatic juice and chicken pancreas upon trypsinisation was demonstrated, as well as the absence of reactivity of the antisera with procolipase from which the CLAP is released. APGPR was found to be unstable in biological fluids. Immunoreactivity is rapidly lost with half life of 5 min and 4 h in human serum and urine respectively. This loss of reactivity can be significantly slowed by the addition of 20 mmol/l Zinc ions (Zn2+), while ethylenediaminetetra-acetic acid (EDTA) and other protease inhibitors were ineffective. In serum the moiety responsible for loss of immunoreactivity was found to have an estimated molecular mass of 200,000-300,000 Da. CLAP assay specifically reports procolipase activation and may help elucidate the mechanism of satiety as well as contribute to the recognition and understanding of the role of procolipase activation in diseases states such as pancreatitis.
 ...
PMID:Development of enzyme-linked immunosorbent assay for free human pro-colipase activation peptide (APGPR). 177 64

A radioimmunoassay for porcine, cationic, pancreatic elastase (irPE) is described. Normal porcine serum contains only small amounts of irPE (less than 3 micrograms/l). IrPE in serum and peritoneal exudate from 6 pigs with experimental pancreatitis was found mainly in a molecular form corresponding to free pro-enzyme. The presence of alpha 1-, alpha 2-macroglobulin-bound elastase-like enzymatic activity in the peritoneal exudates from pigs with pancreatitis, however, indicates that the proteinase is to some extent released as the active enzyme. In some pigs with pancreatitis, the elastase-like activity against Succ(Ala) in the peritoneal exudates increased during the experiment, arguing for a progressive activation of pro-elastase. Free proteolytic activity was not observed in any of the peritoneal exudates. This low degree of activation of elastase and the fact that the elastase inhibiting capacity is substantially larger than the trypsin inhibiting capacity in serum and biological fluids, leads us to the conclusion that active elastase is not a factor of principal importance in the pathogenesis of proteinase inhibitor consumption and tissue damage in our experimental pancreatitis model.
 ...
PMID:Pancreatic cationic elastase in porcine experimental pancreatitis. 193 81

The authors present a prospective study of early diagnosis of biliary etiology in Acute Pancreatitis, using a Multiple Quantitative Index. A positive diagnosis was achieved in more than a 80% of cases if female, age over or equal 55 years, and serum alanine-aminotransferase over or equal twice normal. Some questions concerning usefulness and therapeutical implications of an early diagnosis of Biliary Pancreatitis is already present in discussion.
 ...
PMID:[Acute lithiasic pancreatitis. Usefulness of a multiple quantitative index]. 277 75

This study set out to investigate the alteration of amino acid (AA) and protein metabolism in patients with malnutrition, sepsis, acute pancreatitis and liver diseases. The results showed that in preoperative patients with malnutrition or protein catabolism (decreased levels of plasma proteins, increased urea production rate) the postoperative complications were significantly increased. An increased postoperative infusion of branched chain AA did not improve postoperative nitrogen retention nor plasma protein syntheses in patients with colon or rectum CA. Patients with sepsis or acute pancreatitis had drastically reduced levels of total muscular free AA, mainly due to a fall in muscle glutamine. In septic patients also the hepatic levels of free AA were decreased. These changes of AA metabolism found in clinical situation were not always reflected by results found in experimental rat models (sepsis, pancreatitis, burn injury). The parenteral administration of a synthetic dipeptide containing glutamine and alanine decreased the muscular decrease of glutamine and alanine and increased the hepatic uptake of these two AA in a catabolic dog model. In critically ill patients changes in amino acid and protein metabolism lead to a protein catabolic situation. Urea production rate and muscle glutamine levels seem to be closely related to the prognosis of catabolic patients.
 ...
PMID:[Amino acid and protein metabolism in critically ill patients]. 393 9

Plasma immunoreactive glucagon, C-peptide and substrates (glucose, lactate, and alanine) were measured in 21 pancreatectomized patients and 28 patients with chronic calcifying pancreatitis during arginine infusion. Results were compared with those obtained in control and in insulin-dependent diabetic subjects, and in pancreatectomized subjects receiving a combined infusion of glucagon and arginine or somatostatin and arginine. Plasma immunoreactive glucagon in the pancreatectomized patients was 230 +/- 26 pg/ml (control subjects 100 +/- 13 pg/ml, p less than 0.001), but was unchanged following arginine or somatostatin. Following ethanol extraction of plasma it became undetectable. Similar results were obtained in patients with chronic pancreatitis. In contrast to the insulin-dependent diabetic subjects, no changes in blood glucose, lactate, and alanine concentrations were found during arginine infusion in the pancreatectomized or pancreatitis patients. Addition of glucagon restored the metabolic response to arginine in the pancreatectomized patients. Our results confirm previous smaller studies that in pancreatectomized patients, A cell function is absent or insignificant.
 ...
PMID:Absence of islet alpha cell function in pancreatectomized patients. 612 Aug 75

The effects of growth hormone treatment and dietary alanine supplementation, individually and in combination, were studied in five patients with organic acidemias. Three patients had propionic acidemia, one had 3-hydroxyisobutyric acidemia, and one had a defect in isoleucine metabolism. Two patients with propionic acidemia had decreased growth hormone secretion in response to provocative stimuli (intravenous L-arginine and oral levodopa or clonidine); the remaining subjects had sufficient growth hormone secretion. Three of four subjects in whom IGF1 was measured showed subnormal concentrations at baseline (including two with normal growth hormone secretory responses). All patients showed an increase in linear growth with growth hormone. In the four patients studied, all had a significant increase in nitrogen retention over baseline with alanine or growth hormone alone, or with the combination of growth hormone and alanine, with a much greater effect of growth hormone. Lean body mass and body fat composition tended to become normal with treatment. Protein tolerance increased, and when the patients' dietary protein intakes were increased between 20 and 60% they maintained positive nitrogen balance, without a significant increase in metabolite excretion. One patient with propionic acidemia expired during the time of the study, following a course of recurrent pancreatitis and an episode of acute basal ganglia infarction. All of the other subjects showed clinical improvement (decreased incidence of ketoacidotic episodes and decreased frequency of hospital admission and school absence) during treatment, and even the patient who expired remained metabolically stable up to and through the terminal event. We conclude that growth hormone may be of value in the management of patients with organic acidemia.
 ...
PMID:Anabolic effect of human growth hormone: management of inherited disorders of catabolic pathways. 799 63

Acute biliary pancreatitis may be a grave illness with a fatal outcome in some instances. Its etiology is unclear so far. The diagnosis is difficult even with the help of conventional diagnostic methods and the most up to date imaging techniques. The most sensitive method among laboratory investigations is the elevation of ALT (serum alanine transferase) while endoscopic cholangiopancreatography has the highest accuracy rate of invasive diagnostic procedures. There is a chance of spontaneous remission in cases with mild symptoms while invasive measures-endoscopy or surgery-are needed in cases with grave symptoms. In the present study we evaluate 23 of our cases.
 ...
PMID:[Experience with endoscopic diagnosis and treatment of acute biliary pancreatitis]. 925 65


1 2 3 Next >>