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Development of phospholipase A2 and lysophosphatidylcholine metabolising enzyme activities in the neonatal rat intestine

We have studied the development of phospholipase A2 (PLA2) and lysophosphatidylcholine (lysoPC)-metabolising enzyme activities in the neonatal rat intestine and its relation to the intestinal permeability of macromolecules. The permeability was determined by feeding young rats a mixture of bovine serum albumin, bovine immunoglobulin G and fluorescein-isothiocyanate-conjugated dextran 70,000, and a

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Die Charakterisierung der im Schweineserum vorhandenen Inhibitorfraktionen fur Trypsin, Chymotrypsin und Elastase wurde durch Gelfiltration über Ultrogel AcA44 und Aga-rosegelelektrophorese mit anschließender Demonstration der Hemmaktivität der getrennten Fraktionen durchgeführt. Die Inhibitorfraktionen aus der Gelfiltration wurden weiterhin mittels Antikörper identifiziert, die gegen die Protease

Regulation of secretion of pancreatic spasmolytic polypeptide from porcine pancreas

We studied the neural and hormonal regulation of the secretion of pancreatic spasmolytic polypeptide (PSP), a potential growth factor, from isolated perfused porcine pancreas and the pancreatic exocrine secretion of PSP in response to a meal in young conscious pigs. PSP concentrations in the pancreatic juice ranged from 1 to 180 μg/ml. PSP released to the venous effluent amounted to 0.4-7% of the

Intestinal transmission of macromolecules in newborn dairy calves of different ages at first feeding.

Four groups of eight newborn calves were used to study the intestinal transmission of colostral immunoglobulin from the intestinal lumen to the blood circulation. The first feed was given one, eight, 16 or 24 hours after birth. Thereafter, three feeds were given with eight hour intervals. All feeds were from the same pool of colostrum and the amount fed each time corresponded to 3 per cent of the

Degradation of [Mercaptopropionic acid1, D‐arginine8] ‐ vasopressin (dDAVP) in Pancreatic Juice and Intestinal Mucosa Homogenate

Abstract: The degradation of the vasopressin analogue dDAVP was studied by reversed phase high‐performance liquid chromatography (HPLC) after incubations in pancreatic juice and intestinal mucosa homogenates. dDAVP remained stable in pancreatic juice for a period of 60 min. while the parent hormone arginine vasopressin (AVP) was completely degraded within 5 min. In intestinal mucosa homogenates dD

Increased intestinal marker absorption due to regional permeability changes and decreased intestinal transit during sepsis in the rat

Wang Q, Pantzar N. Jeppsson B, Weström BR, Karlsson BW. Increased intestinal marker absorption due to regional permeability changes and decreased intestinal transit during sepsis in the rat. Scand J Gastroenterol 1994;29:1001-1008. Background: The intestinal barrier properties are impaired during inflammation and sepsis, but the mechanisms behind this are unknown and were therefore investigated du

Bidirectional small intestinal permeability changes to different-sized molecules after HCl-induced injury in the rat

A rat model was developed to assess bidirectional passage of macromolecules and low-molecular-weight markers across the intestinal barrier in intact and injured mucosa. Isolated in situ loops of distal small intestine were luminally perfused for 30 min with saline as control or HCl (pH 2.0) to induce an acute injury. The lumen-to-blood passage was followed during perfusion with bovine serum albumi

Development of exocrine pancreas function in chronically cannulated pigs during 1-13 weeks of postnatal life

The development of exocrine pancreas function was studied in Swedish Landrace pigs surgically fitted with a chronic pancreatic duct catheter and a duodenal re-entrant cannula. The juice secretion and output of total protein and trypsin activity were followed before (basal secretion) and after feeding (postprandial secretion) during the first 1-13 weeks of life. The results showed that throughout t

Levels of serum protease inhibitors during fetal and postnatal development of the pig

Using electroimmunoassay the levels of the individual protease inhibitors, α2-macroglobulin f, α2-macroglobulin s, inter-α-trypsin inhibitor, α1-protease inhibitor and α2-antitrypsin were studied in the serum and the amniotic fluid during the fetal and postnatal development of the pig. High concentrations, far above the adult ones, of α2-antitrypsin and especially α1-protease inhibitor, were obser

Protease inhibitors and their relation to protease activity in human milk

Protease inhibitors and protease (caseinolytic, elastinolytic and esterolytic) activity were analysed in 190 milk samples from 94 mothers from day 1 to day 160 after delivery The main protease inhibitors in human milk are α1-antichymotrypsin and α1-antitrypsin. As measured by electroimmunoassay, the level of α1-antichy-motrypsin in day 1 colostrum was higher than that in normal serum. Trace amount

Intestinal transmission of macromolecules (BSA and FITC-labelled dextrans) in the neonatal pig : Influence of age of piglet and molecular weight of markers

The intestinal transmission of two macromolecular markers, of similar molecular weight but different susceptibility to proteolytic digestion, was investigated in the neonatal pig. Piglets of varying age (0 h-7 days old) were given a mixture of bovine scrum albumin (BSA) and fluorescein-isothiocyanalc labelled dextran 70,000 (FiTC-D 70) by stomach tube, and the scrum concentrations were determined

Monoclonal gammopathy of undetermined significance with multiple paraproteins : A population-based screening study

Monoclonal gammopathy of undetermined significance (MGUS) is the precursor of multiple myeloma (MM) and related disorders. MGUS is characterized by asymptomatic paraproteinemia. In some cases, multiple paraproteins can be identified but the clinical implications of this phenomenon are poorly understood. In this study, we aim to inform the approach to this challenging MGUS subgroup by utilizing dat

Prior cancer and risk of monoclonal gammopathy of undetermined significance : a population-based study in Iceland and Sweden

There is some evidence that a prior cancer is a risk factor for the development of multiple myeloma (MM). If this is true, prior cancer should be associated with a higher prevalence or increased progression rate of monoclonal gammopathy of undetermined significance (MGUS), the precursor of MM and related disorders. Those with a history of cancer might therefore constitute a target population for M

Defining new reference intervals for serum free light chains in individuals with chronic kidney disease : Results of the iStopMM study

Serum free light chain (FLC) concentration is greatly affected by kidney function. Using a large prospective population-based cohort, we aimed to establish a reference interval for FLCs in persons with chronic kidney disease (CKD). A total of 75422 participants of the iStopMM study were screened with serum FLC, serum protein electrophoresis and immunofixation. Estimated glomerular filtration rate

Postoperative Acute Kidney Injury Is Associated With Progression of Chronic Kidney Disease Independent of Severity

BACKGROUND: Both postoperative acute kidney injury (AKI) and preoperative chronic kidney disease (CKD) are associated with significantly worse outcomes following surgery. The relationship of both of these conditions with each other and with CKD progression after surgery remains poorly studied. Our objective was to assess if there was an interaction between preoperative kidney function estimated by

Validity of chronic disease diagnoses in Icelandic healthcare registries

AIMS: To evaluate the validity of recorded chronic disease diagnoses in Icelandic healthcare registries.METHODS: Eight different chronic diseases from multiple sub-specialties of medicine were validated with respect to accuracy, but not to timeliness. For each disease, 30 patients with a recorded diagnosis and 30 patients without the same diagnosis were randomly selected from >80,000 participants