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At least 307 records · Page 17Linked to original sources
PubMed1999

[Indicanuria].

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Hartnup Disease↗
PubMedDate not supplied

Identification of allantoin, uric acid, and indoxyl sulfate as biochemical indicators of filth in food packaging by LC.

A liquid chromatographic (LC) method was developed for the determination of allantoin, uric acid, and indoxyl sulfate in mammalian urine contaminated packaging material including paper bagging, corrugated cardboard, grayboard, and burlap bagging. The procedure involves solvent extraction and isolation of the 3 analytes by reversed-phase LC with ultraviolet detection at 225 nm for allantoin and 286 nm for uric acid and indoxyl sulfate. The composition of authentic mammalian urine such as mouse, rat, cat, dog, and human were also determined with regard to the 3 compounds of interest. A linear concentration range of 0.11-20.4, 0.02-10.0, and 0.04-30.0 microg/mL was obtained for allantoin, uric acid, and indoxyl sulfate, respectively. Limits of detection (LOD) and quantitation (LOQ) were 0.0104 and 0.0345 microg/mL for allantoin; 0.0018 and 0.0060 microg/mL for uric acid; and 0.0049 and 0.0165 microg/mL for indoxyl sulfate, respectively. Interday relative standard deviation values for a mixture of standard allantoin, uric acid, and indoxyl sulfate (n = 5) were 0.97, 0.80, and 0.94%, respectively. Analyte composition for 5 types of authentic mammalian urine varied from 0.19-6.88 mg/mL allantoin; 0.08-0.57 mg/mL uric acid; and 0.03-0.78 mg/mL indoxyl sulfate. Analyte content for 8 samples including 2 samples each for paper, cardboard, grayboard, and burlap bagging each contaminated with mouse or rat urine ranged from <LOD to 4,598 microg/gm allantoin; <LOD to 202 microg/gm uric acid; and 17.5 to 616 microg/gm indoxyl sulfate. Recoveries of allantoin, uric acid, and indoxyl sulfate from 11 fortified samples (4 types) for both mouse and rat urine ranged from 28.2 to 114.1 % for allantoin; 32.6 to 123.4% for uric acid; and 52.6 to 118.2% for indoxyl sulfate.

Allantoin↗
PubMedDate not supplied

A double-blind comparative study of cimetidine and placebo in adult Nigerian duodenal ulcer patients with special reference to gastroduodenal mucosal morphology and intestinal bacterial activity.

Twenty-seven adult Nigerian patients with endoscopically proven active duodenal ulcers have received in a double-blind trial either the histamine H2 - receptor antagonist cimetidine 1g daily or placebo tablets of identical appearance for 4 weeks. Fifty-six per cent of the cimetidine patients and 18% of those receiving placebo had endoscopically completely healed ulcers and total pain relief at the completion of trial. This response amounted to clinical cure. An additional 19% of patients in the cimetidine group experienced clinical improvement either in endoscopic or symptomatic reassessment but not in both, thus leading to a disparity between clinical cure rate (56%), healing rate (69%), and pain relief (64%). Though therefore significantly better than placebo, this less favourable response to cimetidine in this study may be due to the short trial period, the disparity between healing and pain relief rates or to co-existing and persistent antroduodenitis in ulcer patients as shown on gastroduodenal mucosal biopsies taken at the time of the clinical investigation. There were no untoward clinical laboratory side effects with the exception of the one cimetidine patient who experienced diarrhoea and a small number who showed slight, asymptomatic rise in plasma creatinine level. Of particular interest to the reported occurrence of diarrhoea with cimetidine therapy is the finding in the bacteriological studies of intestinal aspirates and biochemistry estimations for indicanuria in the consenting patients which showed that orally administered cimetidine 1g daily for 4 weeks neither produced demonstratable alterations in the bacterial content of the small bowel not pathological indicanuria, thereby excluding bacterial overgrowth syndrome as a therapeutic hazard in the clinical application of cimetidine.

Adult↗
PubMed1962

Hartnup syndrome.

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Amino Acids↗