PMID: 6114940Jun 1, 1981

Urine and serum leucine aminopeptidase, N-acetyl-beta-glucosaminidase and gamma-glutamyl transpeptidase activities in diabetics with and without nephropathy

Israel Journal of Medical Sciences
N CohenY Bar-Khayim


Urinary and serum activities of leucine aminopeptidase (LAP), N-acetyl-beta-glucosaminidase (ABG) and gamma-glutamyl transpeptidase (GGTP) were determined in four groups: 1) control subjects with normal oral glucose tolerance test and normal renal function; 2) latent diabetics with elevated oral glucose tolerance test and diabetic parents; 3) overt diabetics; 4) diabetics with slight nephropathy, exemplified by elevated serum creatinine levels and decreased creatinine clearance. No clear differences were found in the urinary GGTP and serum enzyme activities. Urinary LAP activity was significantly increased in Groups 2, 3 and 4, and urinary ABG activity in Groups 3 and 4. However, since the rise in urinary LAP activity was less consistent than that in ABG, it seems that the appearance of the latter enzyme in urine most likely results from tubular damage and may serve as a sensitive indicator of early diabetic kidney disease.

Related Concepts

Oral Glucose Tolerance Test
Kidney Function Tests
Creatinine Clearance Measurement
Diabetic Nephropathy
Hypoglycemia, Leucine-induced
Clinical Enzyme Tests (Procedure)
Gamma-glutamyl transferase
Methoxyleucine Aminopeptidase

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Synapse Loss as Therapeutic Target in MS

As we age, the number of synapses present in the human brain starts to decline, but in neurodegenerative diseases this occurs at an accelerated rate. In MS, it has been shown that there is a reduction in synaptic density, which presents a potential target for treatment. Here is the latest research on synapse loss as a therapeutic target in MS.

Artificial Intelligence in Cardiac Imaging

Artificial intelligence (ai) techniques are increasingly applied to cardiovascular (cv) medicine in cardiac imaging analysis. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

Social Learning

Social learning involves learning new behaviors through observation, imitation and modeling. Follow this feed to stay up to date on the latest research.

Cell Atlas of the Human Eye

Constructing a cell atlas of the human eye will require transcriptomic and histologic analysis over the lifespan. This understanding will aid in the study of development and disease. Find the latest research pertaining to the Cell Atlas of the Human Eye here.

Single Cell Chromatin Profiling

Techniques like ATAC-seq and CUT&Tag have the potential to allow single cell profiling of chromatin accessibility, histones, and TFs. This will provide novel insight into cellular heterogeneity and cell states. Discover the latest research on single cell chromatin profiling here.

Genetic Screens in iPSC-derived Brain Cells

Genetic screening is a critical tool that can be employed to define and understand gene function and interaction. This feed focuses on genetic screens conducted using induced pluripotent stem cell (iPSC)-derived brain cells.