Physical analysis of ejaculate to evaluate the secretory activity of the seminal vesicles and prostate
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Fernando Tadeu Andrade-Rocha
Abstract
The purpose of this study was to ascertain whether analysis of the physical properties of ejaculate also has any diagnostic potential for evaluating the function of these accessory sex glands. Diverse normal and abnormal states of coagulation, liquefaction, volume, viscosity and pH were studied with regard to the levels of biochemical markers of the seminal vesicles (fructose and inorganic phosphorus) and prostate (calcium, zinc and acid phosphatase). Fructose and inorganic phosphorus were significantly decreased in samples with absent or poor coagulation (p<0.001), volume <2.0mL (p=0.009 and p<0.001, respectively), hypoviscosity (p=0.013 and p<0.001), hyperviscosity (p=0.006 and p<0.001) and pH ≤7.1 (p=0.018 and p<0.001). Also, fructose and inorganic phosphorus were significantly decreased in samples with liquefaction >120min (p=0.003) and pH >8.0 (p<0.001), respectively. Calcium, zinc and acid phosphatase activity were significantly increased in samples with absent or poor coagulation (p<0.001), and significantly decreased in samples with volume >5.0mL (p=0.007, p=0.034 and p=0.011) and pH >8.0 (p<0.001). Also, calcium and zinc were significantly increased in hypoviscous samples (p=0.012 and p=0.003), whereas the zinc concentration was significantly lower in hyperviscous samples (p=0.026). Using receiver operating characteristic (ROC) curve analysis, pH showed the highest predictive power to identify prostate dysfunction (83.6%) and simultaneous prostate and seminal vesicle dysfunction (98.8%). Physical analysis of ejaculate was also found to be clinically useful for evaluating the secretory activity of the seminal vesicles and prostate. Abnormal coagulation, liquefaction, volume, viscosity and pH strongly suggest gland dysfunction.
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©2005 by Walter de Gruyter Berlin New York
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Articles in the same Issue
- Cervical human papillomavirus screening by PCR: advantages of targeting the E6/E7 region
- Isotretinoin therapy induces DNA oxidative damage
- Structural evaluation of plasma α2-macroglobulin in acute pancreatitis
- Failure of the PAXgene™ Blood RNA System to maintain mRNA stability in whole blood
- Reticulocyte hemoglobin measurement – comparison of two methods in the diagnosis of iron-restricted erythropoiesis
- Physical analysis of ejaculate to evaluate the secretory activity of the seminal vesicles and prostate
- Specificity of the 3H-triolein assay for pancreatic lipase in blood plasma
- Effects of hemolysis and storage condition on neuron-specific enolase (NSE) in cerebrospinal fluid and serum: implications in clinical practice
- Plasma levels of 7-hydroxymetabolites of dehydroepiandrosterone in healthy Central European aging men
- Prevalence of abnormal thyroid stimulating hormone and thyroid peroxidase antibody-positive results in a population of pregnant women in the Samara region of the Russian Federation
- Impact of standardized calibration on the inter-assay variation of 14 automated assays for the measurement of creatinine in human serum
- Efficacy of three ELISA measurements of anti-cyclic citrullinated peptide antibodies in the early diagnosis of rheumatoid arthritis
- Mean and variance quality control for multiple correlated levels of replicated control samples
- Clinical evaluation of serodiagnosis of active tuberculosis by multiple-antigen ELISA using lipids from Mycobacterium bovis BCG Tokyo 172
- Analytical evaluation of the Dade Behring Dimension RxL automated N-Terminal proBNP (NT-proBNP) method and comparison with the Roche Elecsys 2010
- Unusually high alkaline phosphatase due to intestinal isoenzyme in a healthy adult
- Deficient α-galactosidase A activity in plasma but no Fabry disease – a pitfall in diagnosis
- Reportable interval of patient examination results and ISO 15189