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Alveolar epithelial clearance of protein

Substantial progress has been made in understanding the rate, the pathways, and the mechanisms regulating alveolar protein removal from the uninjured lung. Whole animal studies and cellular studies have demonstrated that the majority of alveolar epithelial protein clearance occurs by passive nondegradative diffusional pathways. Some evidence, however, has been recently presented that alveolar epit

Developmental regulation of the porcine exocrine pancreas by glucocorticoids

The possible role of CORTISOL in development of the exocrine pancreas was investigated. In the first study, fetal pigs were removed from the uterus by caesarean section (pentobarbitone anesthesia) and the pancreas collected from 51 69 to 109-day-old fetuses (term = 114 ± 2 days). Of these, 15 88 to 90-day-old fetuses had been infused subcutaneously for 6 days with either saline, adrenocorticotropi

Comparative study of antibacterial activity of pancreatic juice in six mammalian species

A comparative study of antibacterial activity of pancreatic juice was conduced on six mammalian species. Pancreatic juice collections were conducted as acute (rabbit, guinea pig, rat) and chronic (pig, sheep, cattle) experiments, in the former before and after stimulation [cholecystokinin (CCK) and secretin] and in the latter under basal conditions alone. Antibacterial activity was tested on Micro

Ageing, social participation, and everyday mobility : Facilitating age-friendly environments

Due to the increasing share of older people worldwide, the United Nations has directed an initiative towards a "decade of healthy ageing" to promote "age-friendly environments". This study aims to gain a deeper understanding of how to promote social participation and everyday mobility in later life. The ambition is to increase the knowledge about how to create more age-friendly environments and soDue to the increasing share of older people worldwide, the United Nations has directed an initiative towards a "decade of healthy ageing" to promote "age-friendly environments". This study aims to gain a deeper understanding of how to promote social participation and everyday mobility in later life. The ambition is to increase the knowledge about how to create more age-friendly environments and so

Different properties of the paracellular pathway account for the regional small intestinal permeability to the peptide desmopressin

The regional small intestinal permeability to the vasopressin analogue desmopressin (dDAVP) was further characterized in proximal jejunal and distal (ileocecal) segments of the rat. Administration of the peptide to closed small intestinal loops confirmed the existence of regional absorption differences also in vivo in rats. Thus, the extent of absorption was about 4 times as high from the ileoceca

Biliary Excretion of the Vasopressin Analogue DDAVP after Intraduodenal, Intrajugular and Intraportal Administration in the Conscious Pig

Abstract: The biliary excretion of the vasopressin analogue 1‐deamino‐8‐D‐arginine vasopressin (dDAVP) was determined in the pig after three administration routes, intrajugular venous, intraportal venous and intraduodenal. In all cases the biliary excretion was less than 1% of the administered dose. The plasma/bile concentration ratio was less than 1:1. A significant first‐pass effect was found wh

Enteral exposure to crude red kidney bean lectin induces maturation of the gut in suckling pigs

The present investigation characterized the effect of red kidney bean lectin exposure on gut maturation and function in young piglets. Eleven suckling pigs were given by stomach tube a crude red kidney bean lectin preparation (containing about 25% lectin, 400 mg/kg BW) (lectin-treated pigs) at 10, 11, and 12 d of life, and an additional 16 pigs (control pigs) were given saline instead. On the next

Increased gut permeability to FITC-dextran 70,000, induced by TPN, is reversed by parenteral ampicillin treatment

Previous experiments by our group have demonstrated that total parenteral nutrition (TPN) in rats increases the gut permeability to FITC-dextran 70,000 when compared to normally fed controls. TPN may thus, by inducing a 'leaky' gut be one co-factor behind the development of 'gut origin sepsis', a recent hypothesis for the development of multiple organ failure (MOF) in patients subjected to severe

Intestinal uptake and transmission of macromolecules into the blood in the young guinea pig

The developmental changes in the ability of the small intestinal epithelium to take up and transfer into blood the macromolecules bovine serum albumin (BSA), bovine immunoglobulin G (BIgG), and fluorescein isothiocyanate-labeled dextran 70,000 (FITC-dextran) were studied in guinea pigs 0-14 days of age. In addition, in the same animals, the activities of the proteases ca-thepsin B and D within the

Platelet-activating factor (Paf-acether) formation in neonatal intestinal mucosa and in cultured intestinal epithelial cells

We report the presence of platelet-activating factor (PAF-acether; l-0-alkyl-2-acetyl-.v«-glycero-3-phosphocholine) in small-intestinal and colonic mucosa of neonatal rats. The PAF-acether content was higher in the colon than in the small intestine, and was lower in the small intestine of 30-day-old animals than in 14-day-old animals. We also report that cultured intestinal epithelial cells (INT 4

Purification and characterization of α2-, α2-β- and β-macroglobulin inhibitors in the hedgehog, Erinaceus europaeus : β-macroglobulin identified as the plasma antihemorrhagic factor

C. A. de Wit and B. R. Weström. Purification and characterization of α2-, α2-β- and β-macroglobulin inhibitors in the hedgehog, Erinaceus europaeus: β-macroglobulin identified as the plasma antihemorrhagic factor. Toxicon 25, 1209 - 1219, 1987. - Three macroglobulin inhibitors were purified from hedgehog (Erinaceus europaeus) plasma by sequential chromatography on Cibacron Blue Sepharose, Sephacry

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