scholarly journals Comparative Assessment of Small and Large Intestine Biopsies for Ex Vivo HIV-1 Pathogenesis Studies

2018 ◽  
Vol 34 (10) ◽  
pp. 900-906 ◽  
Author(s):  
Julie Elliott ◽  
Jennifer A. Fulcher ◽  
F. Javier Ibarrondo ◽  
Karen Tanner ◽  
Ian McGowan ◽  
...  
Keyword(s):  
Large Intestine ◽  
Ex Vivo ◽  
Comparative Assessment ◽  
Hiv 1 ◽  
Small And Large Intestine

Comparison of Transport Capacity of Small and Large Intestine

1961 ◽  
Vol 41 (5) ◽  
pp. 500-504 ◽  
Author(s):  
N. Cordero ◽  
T. Hastings Wilson
Keyword(s):  
Large Intestine ◽  
Transport Capacity ◽  
Small And Large Intestine

scholarly journals Small and Large Intestine (II): Inflammatory Bowel Disease, Short Bowel Syndrome, and Malignant Tumors of the Digestive Tract

Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2325
Author(s):  
Yolanda Ber ◽  
Santiago García-Lopez ◽  
Carla J. Gargallo-Puyuelo ◽  
Fernando Gomollón
Keyword(s):  
Inflammatory Bowel Disease ◽  
Short Bowel Syndrome ◽  
Large Intestine ◽  
Malignant Tumors ◽  
Short Bowel ◽  
Bowel Diseases ◽  
Inflammatory Bowel ◽  
Macro And Micronutrients ◽  
Enteral And Parenteral Nutrition ◽  
Small And Large Intestine

The small intestine is key in the digestion and absorption of macro and micronutrients. The large intestine is essential for the absorption of water, to allow adequate defecation, and to harbor intestinal microbiota, for which their nutritional role is as important as it is unknown. This article will describe the causes and consequences of malnutrition in patients with inflammatory bowel diseases, the importance of screening and replacement of micronutrient deficits, and the main indications for enteral and parenteral nutrition in these patients. We will also discuss the causes of short bowel syndrome, a complex entity due to anatomical or functional loss of part of the small bowel, which can cause insufficient absorption of liquid, electrolytes, and nutrients and lead to complex management. Finally, we will review the causes, consequences, and management of malnutrition in patients with malignant and benign digestive tumors, including neuroendocrine tumors (present not only in the intestine but also in the pancreas).

scholarly journals HIV-1 subverts the complement system in semen to enhance viral transmission

2021 ◽  
Author(s):  
Bernadien M. Nijmeijer ◽  
Marta Bermejo-Jambrina ◽  
Tanja M. Kaptein ◽  
Carla M. S. Ribeiro ◽  
Doris Wilflingseder ◽  
...  
Keyword(s):  
Ex Vivo ◽  
Virus Transmission ◽  
Sexual Contact ◽  
Target Cells ◽  
People Living With Hiv ◽  
Lectin Receptor ◽  
Pre Treatment ◽  
Living With Hiv ◽  
Hiv 1

AbstractSemen is important in determining HIV-1 susceptibility but it is unclear how it affects virus transmission during sexual contact. Mucosal Langerhans cells (LCs) are the first immune cells to encounter HIV-1 during sexual contact and have a barrier function as LCs are restrictive to HIV-1. As semen from people living with HIV-1 contains complement-opsonized HIV-1, we investigated the effect of complement on HIV-1 dissemination by human LCs in vitro and ex vivo. Notably, pre-treatment of HIV-1 with semen enhanced LC infection compared to untreated HIV-1 in the ex vivo explant model. Infection of LCs and transmission to target cells by opsonized HIV-1 was efficiently inhibited by blocking complement receptors CR3 and CR4. Complement opsonization of HIV-1 enhanced uptake, fusion, and integration by LCs leading to an increased transmission of HIV-1 to target cells. However, in the absence of both CR3 and CR4, C-type lectin receptor langerin was able to restrict infection of complement-opsonized HIV-1. These data suggest that complement enhances HIV-1 infection of LCs by binding CR3 and CR4, thereby bypassing langerin and changing the restrictive nature of LCs into virus-disseminating cells. Targeting complement factors might be effective in preventing HIV-1 transmission.

scholarly journals Expression of IL-10 receptors on epithelial cells from the murine small and large intestine

2000 ◽  
Vol 12 (2) ◽  
pp. 133-139 ◽  
Author(s):  
Timothy L. Denning ◽  
Nicola A. Campbell ◽  
Fei Song ◽  
Roberto P. Garofalo ◽  
Gary R. Klimpel ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Large Intestine ◽  
Small And Large Intestine

Phenylarsine oxide inhibits ex vivo HIV-1 expression

1997 ◽  
Vol 51 (10) ◽  
pp. 430-438 ◽  
Author(s):  
S Arbault ◽  
M Edeas ◽  
S Legrand-Poels ◽  
N Sojic ◽  
C Amatore ◽  
...  
Keyword(s):  
Ex Vivo ◽  
Phenylarsine Oxide ◽  
Hiv 1

Effects of a High Cholesterol–Oil Diet for Rabbits on Concentrations of Heparin and Total Sulfated Mucopolysaccharide in Aorta and Other Tissues Measured by Microelectrophoresis

1974 ◽  
Vol 52 (3) ◽  
pp. 661-668 ◽  
Author(s):  
T. K. Sue ◽  
L. B. Jaques
Keyword(s):  
Lipoprotein Lipase ◽  
Large Intestine ◽  
Serum Cholesterol ◽  
Lipase Activity ◽  
Serum Levels ◽  
Lipoprotein Lipase Activity ◽  
High Cholesterol ◽  
Experimental Diet ◽  
Small And Large Intestine

Rabbits were fed a high cholesterol–oil diet for 13 weeks. The amounts of total sulfated mucopolysaccharides and heparin in aorta, heart, skin, and small and large intestine were determined by microelectrophoresis. Aortic lipoprotein lipase activity, serum cholesterol, and triglycerides were also measured. The results showed that quantities of total sulfated mucopolysaccharides, heparin, and lipoprotein lipase activity increased markedly in aortas but were without change in other tissues in the rabbits on the experimental diet. There was a high correlation between lipoprotein lipase activity and concentrations of both heparin and total sulfated mucopolysaccharides in aorta, and also between concentrations of heparin and total sulfated mucopolysaccharides in aorta and serum levels of triglyceride and cholesterol.

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