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Biomedical subjects

R D Hempel

Publications and source records attributed to R D Hempel.

At least 19 recordsLinked to original sources
PubMed1990

Age-dependent excretion of alanine aminopeptidase, alkaline phosphatase, gamma-glutamyltransferase and N-acetyl-beta-D-glucosaminidase in human urine.

Urinary excretion of alanine aminopeptidase, alkaline phosphatase, gamma-glutamyltransferase and N-acetyl-beta-D-glucosaminidase was determined in gel-filtered samples of morning random urine specimens of 442 subjects of various ages (5 days to 58 years). Enzyme excretion related to urinary creatinine (enzyme/creatinine ratio; U/mmol creatinine) significantly decreased with increasing age. Sex-related differences of some enzyme excretions were found in age groups over 6 years. From these investigations, we calculated upper reference intervals (97.5 percentiles) for 5 age-dependent groups of children and adolescents and for one group of adults.

Acetylglucosaminidase↗
PubMed1981

[Clinical value of N-acetyl-beta-D-glucosaminidase and alpha-galactosidase in liver diseases].

N-acetyl-beta-D-glucosaminidase is a lysosomal glycosidase, which participates in the catabolism of the mucopolysaccharides and of the glycoproteins. For the determination of this enzyme the production of the substrate and a modified methodology are described. Measurements of the activity were performed by 4-nitrophenyl-alpha-D-galactopyranoside and 4-nitrophenyl-N-acetyl-beta-D-glucosaminide as substrates. Examinations of this enzyme were performed in patients with acute virus hepatitis, chronic hepatitis, liver cirrhosis and healthy test persons. In acute hepatitis and liver cirrhosis and significant increase of enzyme is provable, but not in protracted hepatitis.

Acetylglucosaminidase↗
PubMed1977

[D-thyroxin in the therapy of type IIa and IIb hyperlipoproteinemias].

21 patients with hyperlipoproteinaemias of type IIa and IIb were treated with D-thyroxin (4 mg/die) after a placebo phase. The observed changes of the cholesterol and triglyceride level in the serum are described. Hypermetabolic and cardiac side effects did not appear in the patients. The possible sites of action of D-thyroxin in the intermediary lipid metabolism are discussed.

Adult↗