fistula/triacylglycerol

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Factors influencing triacylglycerol delivery into mesenteric lymph.

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The transport of triacylglycerol (TG) in mesenteric lymph was studied in rats with duodenal and mesenteric lymphatic cannulas with or without bile fistulas. Rats were infused with 135 mumol glycerol trioleate (TO) for 4 h, followed by 5 h of NaCl infusion. Rats with intact fistulas prefed 20% corn

Triacylglycerol and cholesterol transport during absorption of glycerol trioleate vs. glycerol trielaidate.

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We used conscious, chronic lymph-fistula rats to compare intestinal lymphatic transport of glycerol trioleate (TO) vs. glycerol trielaidate (TE) and to determine the effect of TO vs. TE on absorption and transport of cholesterol. Rats were implanted with intestinal lymph fistulas and duodenal

ABCG5/G8 deficiency in mice reduces dietary triacylglycerol and cholesterol transport into the lymph.

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The adenosine triphosphate-binding cassette (ABC) transporter G5/G8 is critical in protecting the body from accumulating dietary plant sterols. Expressed in the liver and small intestine, it transports plant sterols into the biliary and intestinal lumens, thus promoting their excretion. The extent

The transport of DDT from chylomicrons to adipocytes does not mimic triacylglycerol transport.

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Despite being banned in the U.S., organochlorine toxins such as DDT are frequently detected in human adipose tissue. The main route of exposure is through the consumption of contaminated foods and subsequent intestinal packaging of DDT into chylomicrons. These chylomicrons, which also contain

CD36 is important for chylomicron formation and secretion and may mediate cholesterol uptake in the proximal intestine.

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OBJECTIVE Studies are aimed to determine the role of CD36 in intestinal lipid absorption. METHODS Knock-out (KO) and wild-type (WT) lymph fistula mice were used to study fatty acids (FA) and cholesterol uptake, and chylomicron formation and secretion. Uptake of FA and cholesterol was studied by

Activation of rat intestinal mucosal mast cells by fat absorption.

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Previous studies have linked certain types of gut mucosal immune cells with fat intake. We determined whether fat absorption activates intestinal mucosal mast cells (MMC), a key component of the gut mucosal immune system. Conscious intestinal lymph fistula rats were used. The mesenteric lymph ducts

Antibiotics Suppress Activation of Intestinal Mucosal Mast Cells and Reduce Dietary Lipid Absorption in Sprague-Dawley Rats.

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The gut microbiota affects intestinal permeability and mucosal mast cells (MMCs) responses. Activation of MMCs has been associated with absorption of dietary fat. We investigated whether the gut microbiota contributes to the fat-induced activation of MMCs in rats, and how antibiotics might affect

The importance of the steric configuration of lysophosphatidylcholine in the lymphatic transport of fat.

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The importance of the steric configuration of lysophosphatidylcholine in the lymphatic transport of fat was investigated in bile fistula rats. It was found that the feeding of 1-palmitoyl-sn-glycero-3-phosphocholine increased the lymphatic output of phosphatidyl choline and triacylglycerol, while

Lymphatics in intestinal transport of nutrients and gastrointestinal hormones.

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The lymph fistula rat has been used for studying intestinal absorption of nutrients, especially lipids. Lipid absorption begins with the digestion of triacylglycerol (TAG) to form 2-monoacylglycerol (2-MAG) and fatty acids (FA), which are then incorporated in bile salt-mixed micelles. The mixed

Selective hepatic enrichment of polyunsaturated phosphatidylcholines after intravenous administration of dimethylethanolamine in the rat.

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The content of polyunsaturated phosphatidylcholines (PCs) is one of the parameters which regulate membrane functions. Polyunsaturated PCs are preferentially synthesized in the liver by the microsomal enzyme phosphatidylethanolamine N-methyltransferase. The activity of this enzyme may be stimulated

Further studies on the mechanism of inhibition of intestinal chylomicron transport by Pluronic L-81.

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This study explored further the hypothesis that intestinal cells have two pathways for producing large triacylglycerol-rich lipoprotein particles. The hydrophobic surfactant Pluronic L-81 (L-81) inhibits formation of chylomicrons (containing triacylglycerol synthesized from dietary fatty acids and

Methods for studying rodent intestinal lipoprotein production and metabolism.

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Lipid absorption begins with the digestion of dietary triacylglycerol and ultimately results in the secretion of triacylglycerol in chylomicrons into the lymphatics. Additionally, the intestine also secretes numerous proteins and peptides involved in lipid and lipoprotein metabolism in response to

Intestinal absorption of medium chain fatty acids: in vivo studies in pigs devoid of exocrine pancreatic secretion.

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In order to study the influence of pancreatic enzyme secretion on the intestinal absorption of medium-chain fatty acids (MCFA), three growing pigs (mean body-weight 61 kg) with ligated and severed pancreatic ducts were fitted with a permanent fistula in the duodenum and with two catheters in the

Absorption of synthetic, stereochemically defined acylglycerols in the rat.

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The stereochemistry of fat digestion and absorption was investigated in rats with thoracic duct fistulas, after feeding synthetic triacylglycerol or alkyldiacylglycerol. After feeding 1,2-dilauroyl-3-oleoyl-sn-glycerol, dilauroyloleoylglycerol and lauroyldioleoylglycerol were the most abundant chyle

Sodium valproate inhibits the movement of secretory vesicles in rat hepatocytes.

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Sodium valproate (VPA), a simple 8-carbon branched chain fatty acid, is an effective anti-epileptic drug with an occasional serious side effect of liver damage, including the accumulation of triacylglycerols within hepatocytes, and reductions in serum protein concentrations. By investigating the

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