The effects of dorsomedial hypothalamic (DMH) nucleus lesion on body weight, plasma glucose levels, and the gastric emptying of a liquid meal were investigated in male Wistar rats (170-250 g). DMH lesions were produced stereotaxically by delivering a 2.0-mA current for 20 s through nichrome electrodes (0.3-mm tip exposure). In a second set of experiments, the DMH and the ventromedial hypothalam...

OBJECTIVE To derive the normal reference values for Middle East population using a standard method, and to validate its performance in functional dyspepsia. METHODS A prospective study was designed to derive gastric emptying parameters in 36 healthy control subjects. We measured the lag phase, half time, and gastric retention at the first, second, and third hours. Values were compared to 49 p...

Gastric antral dysmotility has been implicated in the pathogenesis of indomethacin-induced gastric damage, but the relationship between gastric motor abnormalities and mucosal lesions has not been extensively studied. We investigated whether changes in gastric tone and gastric retention correlate with mucosal lesions and neutrophil migration in indomethacin-induced gastric damage in rats. Indom...

The rate of emptying of the gastric remnant after partial gastrectomy has been evaluated in 67 males by means of a meal of beefsteak and barium, and serial, hourly X-rays. Sixteen of the patients had retention after 4 hr, and 8 of these had symptoms (ie, early satiety, anorexia, nausea, vomiting, pain, weight loss), possibly related to gastric retention. The results suggest that the use of stea...

1. A method was found whereby the development of gastric retention could be studied in intact animals without the necessity of recourse to the use of x-rays. 2. Gastric retention was found to develop as a result of protein restriction in 7 out of 10 rats studied. Such retention could again be cleared up with protein realimentation or by allowing the animals free choice of protein, fat and carbo...

BACKGROUND AND OBJECTIVES This study had the purpose of studying gastric emptying in patients with chronic renal failure. MATERIAL AND METHOD Thirty patients with chronic renal failure were studied, 16 in conservative clinical treatment and 14 in hemodialysis for over six months. The control group (CTL) was composed of 18 asymptomatic volunteers. The method of gastric emptying study was scint...

oral ph sensitive drug delivery systems are of utmost importance as these systems deliver the drug at specific part of the gastrointestine (gi) as per the ph of gi, resulting in improved patient therapeutic efficacy and compliance. the ph range of fluids in various segments of the gi tract may provide environmental stimuli for drug release. the aim of this study was to design buoyant beads cont...

The purpose of writing this review on gastroretentive drug delivery systems was to compile the recent literature with special focus on various gastroretentive approaches that have recently become leading methodologies in the field of site-specific orally administered controlled release drug delivery. In order to understand various physiological difficulties to achieve gastric retention, we have...

BACKGROUND Gastrointestinal (GI) complications are common in hereditary transthyretin amyloidosis and an autonomic dysfunction has been considered to explain these symptoms. The aim of this study was to investigate the impact of autonomic neuropathy on gastric emptying in hereditary transthyretin amyloidosis and to relate these findings to nutritional status, GI symptoms, gender, and age at dis...

The purpose of writing this review on floating drug delivery systems (FDDS) was to compile the recent literature with special focus on the principal mechanism of floatation to achieve gastric retention. It is known that differences in gastric physiology (such as, gastric pH, motility) exhibit both intraas well as inter-subject variability demonstrating significant impact on gastric retention ti...