The relative proportion of pre-enterochromaffin (argyrophile) and enterochromaffin (argentaffin) cells in the gastro-intestinal tract of human foetuses

1965 ◽  
Vol 67 (3) ◽  
pp. 338-342 ◽  
Author(s):  
Inderbir Singh
Keyword(s):  
Intestinal Tract ◽  
Relative Proportion ◽  
Gastro Intestinal Tract ◽  
Human Foetuses

Ontogeny of somatostatin in the human gastro-intestinal tract, endocrine pancreas and hypothalamus

1980 ◽  
Vol 94 (1) ◽  
pp. 1-10 ◽  
Author(s):  
J. A. Chayvialle ◽  
C. Paulin ◽  
P. M. Dubois ◽  
F. Descos ◽  
M. P. Dubois
Keyword(s):  
Intestinal Tract ◽  
Endocrine Pancreas ◽  
Appearance Time ◽  
Early Appearance ◽  
Specific Distribution ◽  
The Mean ◽  
Preferential Location ◽  
Immuno Cytochemistry ◽  
Gastro Intestinal Tract ◽  
Human Foetuses

Abstract. The appearance, time and distribution of somatostatin in the pancreas, gastro-intestinal tract and hypothalamus were studied comparatively in human foetuses aged 6–32 weeks, by immuno-cytochemistry and radioimmunoassay. Somatostatin was detected by both methods in all segments including the colon. The first cells were observed, and somatostatin was present in measurable amounts at 8 weeks in pancreas, duodenum and intestine, while the peptide was detected at 12 weeks in antrum and colon, at 14 weeks in fundus, and at 16 weeks in hypothalamus. Subsequently, the largest cell population was located in the pancreas, where peptide concentration and age were positively correlated (P < 0.01, r = 64). From 15 to 21 weeks of age, the mean somatostatin concentration in pancreas (12.4 ± 1.84 ng/mg) was clearly higher than in hypothalamus (0.05 ± 0.02 ng/mg) or in any segment of the gut, where values ranged from 0.36 ± 0.06 (fundus) to 4.74 ± 0.83 ng/mg (duodenum). The early appearance time of somatostatin, and its specific distribution with preferential location in the pancreas, suggest that the peptide may play a major role for the development of the foetal digestive tract, and that it may be involved in the regulation of other endocrine secretions, especially in the pancreas.

Non Steroidal Anti-Inflammatory Drug Induced Damage on Lower Gastro-Intestinal Tract: Is There an Involvement of Microbiota?

2014 ◽  
Vol 9 (3) ◽  
pp. 196-204 ◽  
Author(s):  
Lucia Montenegro ◽  
Giuseppe Losurdo ◽  
Raffaele Licinio ◽  
Maria Zamparella ◽  
Floriana Giorgio ◽  
...  
Keyword(s):  
Intestinal Tract ◽  
Drug Induced ◽  
Inflammatory Drug ◽  
Anti Inflammatory ◽  
Gastro Intestinal Tract

scholarly journals Rehydration before Application Improves Functional Properties of Lyophilized Lactiplantibacillus plantarum HAC03

2021 ◽  
Vol 9 (5) ◽  
pp. 1013
Author(s):  
Karina Arellano-Ayala ◽  
Juhwan Lim ◽  
Subin Yeo ◽  
Jorge Enrique Vazquez Bucheli ◽  
Svetoslav Dimitrov Todorov ◽  
...  
Keyword(s):  
Intestinal Tract ◽  
Food Additives ◽  
Nitrogen Compounds ◽  
Protein Nitrogen ◽  
Bacterial Surface ◽  
Freeze Dried ◽  
Immunomodulatory Properties ◽  
Gastro Intestinal Tract ◽  
The Impact ◽  
Active Formulation

Preservation of probiotics by lyophilization is considered a method of choice for developing stable products. However, both direct consumption and reconstitution of dehydrated probiotic preparations before application “compromise” the survival and functional characteristics of the microorganisms under the stress of the upper gastro-intestinal tract. We evaluated the impact of different food additives on the viability, mucin adhesion, and zeta potential of a freeze-dried putative probiotic, Lactiplantibacillus (Lp.) plantarum HAC03. HAC03-compatible ingredients for the formulation of ten rehydration mixtures could be selected. Elevated efficacy was achieved by the B-active formulation, a mixture of non-protein nitrogen compounds, sugars, and salts. The survival of Lp. plantarum HAC03 increased by 36.36% compared rehydration with distilled water (4.92%) after passing simulated gastro-intestinal stress conditions. Cell viability determined by plate counting was confirmed by flow cytometry. B-active formulation also influenced Lp. plantarum HAC03 functionality by increasing its adherence to a Caco-2 cell-line and by changing the bacterial surface charge, measured as zeta potential.Hydrophobicity, mucin adhesion and immunomodulatory properties of Lp. plantarum HAC03 were not affected by the B-active formulation. The rehydration medium also effectively protected Lp. plantarum ATCC14917, Lp. plantarum 299v, Latilactobacillus sakei (Lt.) HAC11, Lacticaseibacillus (Lc.) paracasei 532, Enterococcus faecium 200, and Lc. rhamnosus BFE5263.

scholarly journals Analysis of the Gastro-Intestinal Tract of Marine Mammals: A Multidisciplinary Approach with a New Multi-Sieves Tool

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1824
Author(s):  
Giorgia Corazzola ◽  
Matteo Baini ◽  
Carla Grattarola ◽  
Cristina Panti ◽  
Federica Marcer ◽  
...  
Keyword(s):  
Cause Of Death ◽  
Marine Mammals ◽  
Intestinal Tract ◽  
Multidisciplinary Approach ◽  
Sample Collection ◽  
Important Data ◽  
New Device ◽  
Specific Protocol ◽  
Specific Analysis ◽  
Gastro Intestinal Tract

Organs and content of the gastro-intestinal tract (GIT) of marine mammals are relevant for a variety of investigations and provide data to researchers from different fields. Currently used protocols applied to the GIT for specific analysis limit the possibility to execute other investigations and important information could be lost. To ensure a proper sample collection and a multidisciplinary investigation of the GIT of marine mammals, a new multi-sieves tool and a specific protocol have been developed. This new device and approach allowed the simultaneous sampling of the GIT and its content for the main investigations concerned. The samples collected during these preliminary trials were suitable to perform all the different research procedures considered in this work. The obtained results show that with a few and easy procedural adjustments, a multidisciplinary sampling and evaluation of the GIT of marine mammals is possible. This will reduce the risk of losing important data aimed at understanding the cause of death of the animal, but also biology and ecology of marine mammals, and other important data for their conservation and habitats management.

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