Search results for " Stomach"
showing 7 items of 37 documents
Corynosoma cetaceum in the stomach of Franciscanas, pontoporia blainvillei (Cetacea): an exceptional case of habitat selection by an Acanthocephalan
2001
Adult acanthocephalans are typically found in the intestine of vertebrates, where they can readily absorb nutrients. However, Corynosoma cetaceum has been frequently reported in the stomach of cetaceans from the Southern Hemisphere. The ecological significance of this habitat was investigated by examining data on number, sex ratio, maturity status, biomass, and fecundity of C. cetaceum in different parts of the digestive tract of 44 franciscanas Pontoporia blainvillei. Individual C. cetaceum occurred in the pyloric stomach (PS) and, to lesser degrees, in the duodenal ampulla (DA) and the main stomach (MS). Females outnumbered males in all chambers, although the sex ratio was closer to 1:1 i…
A BRIEF GUIDE TO THE ANATOMICAL DISSECTION OF THE STOMACH
2021
The purpose of this article is to write a short guide on the macroscopic anatomy of the stomach, describing its structures, its relationships within the abdominal cavity and the dissection methods used during the internship performed by a group of students from the University of Palermo, Palermo, Italy, at the University of Malta, Msida, Malta, during the summer of 2018. Indeed,, they had the opportunity to spend a period of two weeks at the department of Anatomy in the Maltese University for studying and practining on some corpses, with the aim of improving their anatomical knowledge.
Robotic Esophagectomy: The European Experience
2021
In 2003, robot-assisted minimally invasive thoraco-laparoscopic esophagectomy (RAMIE) was developed to overcome the technical limitations of minimally invasive esophagectomy (MIE). Robotic surgery benefits from a stable three-dimensional, magnified view and articulated instruments enabling precise dissection with 7 degrees of freedom of movement. At the time of introduction of RAMIE in 2003, there were no robotic endowristed coagulating instruments available. The dissection of the greater curvature along the gastroepiploic vessels with a rigid robotic ultrasonic scalpel did not add to conventional laparoscopic dissection. Furthermore, the dexterity of the robotic arms was insufficient to re…
Effects of sodium fluoride on the mechanical activity in mouse gastric preparations.
2005
The aim of the present study was to investigate the responses induced by sodium fluoride (NaF) on gastric mechanical activity, using mouse whole-stomach preparations. The mechanical activity was recorded in vitro as changes of intraluminal pressure. In most of the preparations, NaF induced a tetrodotoxin-insensitive biphasic effect characterized by early relaxation followed by slowly developing contractile response. The contraction was dependent on the concentration of NaF, whereas the relaxation was observed at only 10–30 mmol/L NaF. The contractile effect was significantly reduced by nifedipine (an L-type Ca2+channel blocker), ryanodine or ruthenium red (inhibitors of Ca2+release from sar…
THE EFFECT OF CLONIDINE ON ACID SECRETION STIMULATED BY HISTAMINE AND PENTAGRASTRIN IN THE ISOLATED MOUSE STOMACH
1978
GUANOSINE EFFECTS ON THE MOTOR ACTIVITY OF THE MOUSE STOMACH
2012
Guanine-based purines are part of the purinergic system and recently have been shown to act as neuromodulators, interfering with acetylcholine release by enteric neurons in mouse colon. Due to the pivotal role played by enteric neurons in the control of gastrointestinal motility, the aim of the present study was to verify whether guanosine may affect gastric emptying and the mechanical tone, detected in vitro as changes in intraluminal pressure, of the isolated mouse stomach. Guanosine induced a TTX-insensitive concentration-dependent relaxation of isolated stomach, which at the maximal concentration tested (1 mM), reached about 60% of the relaxation induced by 1 mM isoproterenol. The inhib…