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Biomedical subjects

D G Goyal

Publications and source records attributed to D G Goyal.

2 recordsLinked to original sources
PubMed2001

Emergency department D-dimer testing.

Since the early 1980s, much attention has been paid to the development of a biochemical marker for venous thromboembolism. D-dimers are derivatives of fibrinolysis and recently have been touted as a means of screening for thromboemoblism. We review the physiologic, pathologic, and chemical bases for this new test, and outline the specific D-dimer assays currently available. We conclude with a discussion of the clinical utility of D-dimer in the evaluation of patients with venous thromboembolism.

Agglutination Tests↗
PubMed1990

Estimation of in vivo reticuloendothelial system phagocytic activity in rats by direct blood clearance techniques and nuclear scintigraphy.

There has been considerable interest in the examination of reticuloendothelial system phagocytic blockade. In this study, the kinetics of phospholipid liposome-mediated and intraperitoneal silica-mediated phagocytic blockade were examined using five methods of analysis of in vivo 99mTc-labeled albumin clearance and reticuloendothelial cell uptake. Two direct blood sampling techniques revealed significant impairment in 99mTc-labeled albumin clearance after treatment with silica (P less than 0.05), while liposome treatment was not associated with such impairment. A method utilizing nuclear scintigraphy for the determination of blood clearance was incapable of detecting silica-mediated blockade but demonstrated significant impairment by liposomes at 2 hr (P less than 0.001), 6 hr (P less than 0.05), and 24 hr (P less than 0.001). Gamma camera imaging methods for determination of hepatic uptake demonstrated significant (P less than 0.05) and reversible impairment of 99mTc-labeled albumin uptake by liposomes. The most promising of these techniques utilizes deconvolutional analysis of liver region of interest time-activity curves to correct for continuously changing blood concentrations of tracer and for intracellular tracer processing and catabolism. Measurements of reticuloendothelial system phagocytic activity should include methods that take into account the observed discrepancies between blood clearance determinations and reticuloendothelial cell uptake.

Albumins↗