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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1992-3-18
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pubmed:abstractText |
We have been investigating the possibility of using the renal clearance of endogenous N-1-methylnicotinamide (NMN) as a marker of renal tubular function. Sixty-three subjects (11 healthy volunteers and 52 patients with renal impairment) were used for this study. The subjects were divided into three groups according to their creatinine clearance: group 1, over 80 ml/min; group 2, between 30 and 80 ml/min, and group 3, less than 30 ml/min. The correlation between NMN and creatinine clearance was compared for each group. A good correlation (r = 0.84) was found for groups 1 and 3 (r = 0.76), whereas for group 2, a poor correlation was found (r = 0.43). For subjects with mild renal impairment (group 2), there was clear evidence of glomerulo-tubular imbalance manifest by a larger variability in NMN clearance than creatinine clearance and an essentially non-parallel decline in these two parameters for this group. When all subjects were grouped together, the relationship between the clearance of NMN and of creatinine was best described by a 3-term polynomial equation (r = 0.93). NMN clearance is a potentially useful non-invasive marker of renal tubular function in man and provides additional information to that provided by the measurement of creatinine clearance alone. This substance should be more fully evaluated as a potential diagnostic aid.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0028-2766
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
60
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
12-6
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:1531378-Adult,
pubmed-meshheading:1531378-Aged,
pubmed-meshheading:1531378-Aged, 80 and over,
pubmed-meshheading:1531378-Biological Markers,
pubmed-meshheading:1531378-Creatine,
pubmed-meshheading:1531378-Female,
pubmed-meshheading:1531378-Glomerular Filtration Rate,
pubmed-meshheading:1531378-Humans,
pubmed-meshheading:1531378-Kidney Diseases,
pubmed-meshheading:1531378-Kidney Tubules,
pubmed-meshheading:1531378-Male,
pubmed-meshheading:1531378-Middle Aged,
pubmed-meshheading:1531378-Niacinamide
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pubmed:year |
1992
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pubmed:articleTitle |
Estimation of renal tubular secretion in man, in health and disease, using endogenous N-1-methylnicotinamide.
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pubmed:affiliation |
Department of Pharmacy, University of Manchester, UK.
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pubmed:publicationType |
Journal Article
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