UREA AS A SOURCE OF BLOOD AMMONIA
نویسندگان
چکیده
منابع مشابه
Determination of ammonia and urea in urine and of urea in blood by use of an ammonia-selective electrode.
I propose a single, quick method for measuring ammonia in urine and urea in plasma and urine. An ammonia-selective electrodie is used, set up on a microcell, which allows use of small sample volumes. Ammonia is measured directly after partial conversion of ammonium ions to NH3. Urea is measured after its hydrolysis by urease. With urine, the two procedures can be carried out successively in the...
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Purpose—To examine predictors of ammonia exposure and hyperammonemic crises (HAC) in patients with urea cycle disorders (UCDs). Methods—The relationships between fasting ammonia, daily ammonia exposure, and HACs were analyzed in >100 UCD patients. Results—Fasting ammonia correlated strongly with daily ammonia exposure (r=0.764, p<0.001). For patients with fasting ammonia levels <0.5 ULN, 0.5 to...
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In a previous paper (1) we have drawn attention to the discrepancy in free ammonia values of fresh and dried green leaf tissue. The evidence was derived largely from the pasture grasses but the same observation was made with other species; viz., that in practically all cases the ammonia of dried tissue was significantly higher than that of fresh tissue. It was shown that the increase in ammonia...
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The role of the gastrointestinal tract as a major source of blood ammonia has been extensively studied in animals and in patients with liver disease. Less information is available concerning the relative contribution to the blood ammonia by other organs, such as muscle, liver, brain and kidney, which are known to be concerned with ammonia metabolism (1). The renal release of ammonia into the sy...
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The relationship of body condition score (BCS) and blood urea and ammonia to pregnancy outcome was examined in Italian Mediterranean Buffalo cows mated by AI. The study was conducted on 150 buffaloes at 145 +/- 83 days in milk that were fed a diet comprising 14.8% crude protein, 0.9 milk forage units.kg-1 dry matter and a non-structural carbohydrate/crude protein ratio of 2.14. The stage of the...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1917
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)86750-3