the effect of a neuropeptide, the tachykinin on α-amylase, protease and lipase activities in the midgut of american cockroach, periplaneta americana (linnaeus) is evaluated . immunohistochemical reactivities against tachykinin (tachykinin- ir) were detected in the midgut. tachykinin-ir cells in three regions (anterior, median and posterior) of the midgut were counted in normally fed, starved fo...

background digestive and liver diseases (ld) are among the most common causes of mortality and morbidity in iran and throughout the world. we have aimed to report the etiology and outcome of gastrointestinal and ld that needed admission in a typical tertiary referral hospital in tehran during the last decade. methods shariati hospital gastroenterology and liver disease department (gi & ld) was ...

omplex mixtures of disinfection by-products are formed in drinking waters when chlorine is used as disinfectant, among which are found trihalomethanes. trihalomethanes are very stable in the natural environment and are moderately lipophilic. thus they accumulate in the human organism, which may be related to a greater risk of certain cancers.the objective of this study is to investigate the ass...

the purpose of this study is to describe the histological and histochemical features of digestive tract intwo aquarium fishes with different types of feeding habits which are omnivorous (walking catfish) andcarnivorous (piranha), respectively. five adult walking catfish (l: 26.4 ± 3.4 cm, w: 265 ± 55 g) and fiveadult piranha (l: 23.6 ± 4.5 cm, w: 247 ± 50 g) were used for this study. the fishes...

In 1988, a handful of idealists led by Prof. Dr. Henrique Walter Pinotti then Head Professor of Digestive Surgery, Faculty of Medicine, University of São Paulo founded an prestigious organization that today all know, which is the BRAZILIAN COLLEGE OF DIGESTIVE SURGERY CBCD. These selfless whose naes can be seen in Figure 1, are or were university professors committed to the teaching of General ...

endozoochory is one of the seed dispersal modes through animal’s digestive systems transmission and the increases rate germination and plant establishment. the aim of this study, investigated the relationship between seed characteristics and the passage through the digestive tract of livestock and domestic animals (cattle, sheep and goats) in the 7 species perennial grass 8 species perennial fo...

Pancreatic duct obstruction, even in the absence of biliary obstruction and/or bile reflux into the pancreatic duct, can trigger acute hemorrhagic necrotizing pancreatitis. The earliest changes are seen within acinar cells. Early derangements in acinar cell biology include inhibition of digestive enzyme secretion and the co-localization of lysosomal hydrolases with digestive enzyme zymogens. Un...

The digestive system is a way for nutrients from the outside environment to get to various parts of the body. At its simplest, the digestive system is a tube running from the mouth to the anus. This tube is similar to an assembly line, or more properly, a disassembly line. Its chief goal is to break down huge macromolecules (proteins,* fats, and starches) that cannot be absorbed as they are int...

We review key sessions on pharmacological treatment, including four on irritable bowel syndrome and others on pancreatitis and Helicobacter pylori infection.

antiviral agents, many patients face barriers to access. In our Advances in Hepatology column, Dr David E. Bernstein discusses factors that are restricting the use of these lifesaving therapies. A feature article by Drs Nicolas A. Villa and M. Edwyn Harrison describes the diagnosis, classification, and management of biliary strictures, a common complication of liver transplantation. Although bi...