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C-reactive protein. C-reactive protein ( CRP) is an annular (ring-shaped) pentameric protein found in blood plasma, whose circulating concentrations rise in response to inflammation. It is an acute-phase protein of hepatic origin that increases following interleukin-6 secretion by macrophages and T cells.
The net charge on a protein is based on the sum charge of its amino acids, and the pH of the buffer. Proteins are applied to a solid matrix such as an agarose gel, or a cellulose acetate membrane in a liquid buffer, and electric current is applied. Proteins with a negative charge will migrate towards the positively charged anode.
30341-2. The erythrocyte sedimentation rate ( ESR or sed rate) is the rate at which red blood cells in anticoagulated whole blood descend in a standardized tube over a period of one hour. It is a common hematology test, and is a non-specific measure of inflammation . To perform the test, anticoagulated blood is traditionally placed in an ...
In contrast, C-reactive protein (with a half-life of 6–8 hours) rises rapidly and can quickly return to within the normal range if treatment is employed. For example, in active systemic lupus erythematosus, one may find a raised ESR but normal C-reactive protein. [citation needed] They may also indicate liver failure. [11]
Protein C. Protein C, also known as autoprothrombin IIA and blood coagulation factor XIV, [5] : 6822 [6] is a zymogen, that is, an inactive enzyme. The activated form plays an important role in regulating anticoagulation, inflammation, and cell death and maintaining the permeability of blood vessel walls in humans and other animals.
Pathology. Elevated alkaline phosphatase occurs when levels of alkaline phosphatase (ALP) exceed the reference range. This group of enzymes has a low substrate specificity and catalyzes the hydrolysis of phosphate esters in a basic environment. The major function of alkaline phosphatase is transporting chemicals across cell membranes. [ 1]
The Weil–Felix test is an agglutination test for the diagnosis of rickettsial infections. It was first described in 1916. It was first described in 1916. By virtue of its long history and of its simplicity, it has been one of the most widely employed tests for rickettsia on a global scale, despite being superseded in many settings by more ...
The activated protein C resistance ( APCR) test is a coagulation test used in the evaluation and diagnosis of activated protein C (APC) resistance, a form of hypercoagulability. [1] [2] Hereditary APC resistance is usually caused by the factor V Leiden mutation, whereas acquired APC resistance has been linked to antiphospholipid antibodies ...