עמוד 1 מ 111 תוצאות
Fourteen patients with jejunoileal bypass for obesity were treated for one week with a calcium supplement of 3g daily. During this period diarrhoea was significantly (P < 0.005) reduced by 23 per cent (97 per cent confidence limits: 7-46 per cent). Ten of the patients had hyperoxaluria (median value
Hyperoxaluria occurs in most patients after the conventional jejunoileal bypass procedure for obesity. The mechanism of hyperoxaluria is complex, involving persistence of dietary oxalate in solution as well as increased colonic permeability to oxalate. Endogenous oxalate formation also contributes
OBJECTIVE
We determined the effect of dietary fat and oxalate on fecal fat excretion and urine parameters in a rat model of Roux-en-Y gastric bypass surgery.
METHODS
Diet induced obese Sprague-Dawley® rats underwent sham surgery as controls (16), or Roux-en-Y gastric bypass surgery (19). After
Roux-en-Y gastric bypass (RYGB) surgery is a popular and extremely effective procedure for sustained weight loss in the morbidly obese. However, hyperoxaluria and oxalate kidney stones frequently develop after RYGB and steatorrhea has been speculated to play a role. We examined the effects of RYGB
The effect of oral calcium on oxalate absorption was studied in eight patients with secondary hyperoxaluria after jejunoileal bypass for morbid obesity during a standardized diet with a fixed supply of fat, calcium, and oxalate. A supplementary calcium dose of 2000 mg/day reduced renal oxalate
Kidney stones is increasingly associated with obesity. With an increasing prevalence of obesity and metabolic syndrome in the past 30 years, urinary oxalate has significantly increased. However, its underlying pathophysiologic mechanisms of hyperoxaluria have not been fully explored. This
Most kidney stones are composed of calcium oxalate, and minor changes in urine oxalate affect the stone risk. Obesity is a risk factor for kidney stones and a positive correlation of unknown etiology between increased body size, and elevated urinary oxalate excretion has been reported. Here, we used
Most kidney stones (KS) are composed of calcium oxalate and small increases in urine oxalate enhance the stone risk. Obesity is a risk factor for KS and urinary oxalate excretion increases with increased body size. We previously established the obese ob/ob ( ob) mice as a model (3.3-fold higher
Hyperoxaluria after Roux-en-Y gastric bypass (RYGB) is generally attributed to fat malabsorption. If hyperoxaluria is indeed caused by fat malabsorption, magnitudes of hyperoxaluria and steatorrhea should correlate. Severely obese patients, prior to bypass, ingest excess dietary fat that can produce
Specific relationships among reactive oxygen species, activation pathways, and inflammatory mechanisms involved in kidney injury were assessed in a combined model of obesity and hyperoxaluria. Male Wistar rats were divided into four groups: Control, HFD (high fat diet), OX (0.75% ethylene glycol),
In order to investigate the effect on urinary oxalic acid excretion, ten patients with jejunoileostomy for morbid obesity were treated with oral calcium. We found a statistically significant decrease. The investigation suggests that the oral administration of calcium alone is not sufficient, in a
Ileostomy of the distal end of the bypassed segment of small intestine was done twenty-three months after a 28 to 20 cm (12 to 8 inch) end-to-end jejunoileal bypass for obesity (Scott operation) in a forty-eight year old white female, thus creating a Thiry fistula. Weight prior to jejunoileal bypass
OBJECTIVE
To give a comprehensive and focused overview on the current knowledge of the causal relations of metabolic syndrome and/or central obesity with kidney stone formation.
METHODS
Previous reports were reviewed using PubMed, with a strict focus on the keywords (single or combinations thereof):
Of 93 patients with small bowel bypass for massive exogenous obesity, three developed calcium oxalate urinary calculi, four stones in their gallbladder, and one developed both gallstones and urinary calculi during a mean follow-up period of 17.6 plus or minus 9.0 months. The urinary oxalate