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1

Importance of lactic acid bacteria in treatment and prevention of digestive tract disorders

100%
Strus M.
Postępy Higieny i Medycyny Doświadczalnej
|
1997
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vol. 51
|
issue 6
605-619
EN
Probiotic bacteria are used to treat disturbed intestinal microflora and increased gut permeability which are characteristic to many intestinal disorders. Examples include children with acute rotavirus diarrhoea, subjects with food allergy, subjects with colonic disorders and patients undergoing pelvic radiotherapy and sometimes changes associated with colon cancer development. In all such disease states altered intestinal microflora, impaired gut barrier and different types of intestinal inflammation are present. Successful probiotic bacteria are able to survive gastric conditions and colonise the intestine, at least temporarily, by adhering to the intestinal epithelium. Already existing preparations containing viable lactic bacteria of human origin appear to have value in restoring normal microbial functions and alleviating symptoms in some patients with gastrointestinal infection and other conditions. Current scientifically based research efforts world-wide are now focusing on the development of high quality products containing microorganisms preselected for specific probiotic characteristics.
2

A study of the anatomy, histology and ultrastructure of the digestive tract of Orthrias angorae Steindachner, 1897

70%
Suicmez M., Ulus E.
Folia Biologica
|
2005
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vol. 53
|
issue 1-2
95-100
EN
The anatomy, histology and ultrastructure of the digestive tract of Orthrias angorae (Steindachner, 1897) were investigated using light microscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The histological structure consists of four layers: mucosa, submucosa, muscularis and serosa. The esophageal mucosa consists of undifferentiated basal epithelial cells, mucous cells and surface epithelial cells. It was observed that the J-shaped stomach had a meshwork of folds in the cardiac region, and longitudinal folds in the fundic and pyloric regions. A single layer of columnar cells, PAS positive only in their apical portions, forms the epithelium. The convoluted tube-shape intestine is lined by simple columnar epithelial cells, which have microvilli at the apical surface. The wall of the esophagus and stomach are thicker than that of the intestine because of the thick muscle layer. There were numerous goblet cells in the intestine. There were numerous gastric glands in the submucosa layer of the cardiac stomach, but none were present in the pyloric region of the stomach. There were no pyloric caeca between the stomach and intestine. The enterocytes with microvilli contained rough endoplasmic reticulum, ribosomes and rounded bodies, and the gastric cells contained a well-developed Golgi apparatus.
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