Results 271 to 280 of about 2,899,384 (314)

FACTOR VIII RELATED ACTIVITIES IN CONCENTRATES

Scandinavian Journal of Haematology, 1984
ABSTRACT: Factor VIII related activities were investigated in 3 low purity concentrates (fraction 1‐0 and freeze‐dried cryoprecipitates), 2 intermediate concentrates, and 8 high purity concentrates. The parameters studied were VIII:C by one‐stage assay and chromogenic assay, VIII clotting antigen (VIII:CAg), VIII related antigen (VIIIR:Ag) by ...
I M, Nilsson, L, Borge, M, Gunnarsson, A C, Kristoffersson   +3 more
openaire   +2 more sources

Caeruloplasmin concentration and oxidase activity in polyarthritis

Rheumatology International, 1988
Caeruloplasmin (Cp) concentration and oxidase activity have been shown to be elevated in rheumatoid arthritis (RA) and psoriatic arthritis, but normal in Reiter's syndrome, Behcet's syndrome and juvenile seronegative polyarthritis. Synovial fluid Cp was significantly depressed in comparison with serum Cp in RA.
J S, Dixon, M, Greenwood, J R, Lowe
openaire   +2 more sources

Coagulation Factor Activity in Platelet Concentrates

Transfusion, 1979
Coagulation factor activity in platelet concentrates stored under different conditions was investigated. At both 22 C and 4 C, coagulation factors II, VII, IX, X, XI, and XII and fibrinogen were well maintained up to 72 hours. Factor V activity declined slightly in platelet concentrates stored at 4 C (to 78% at 72 hours), but fell to 47 per cent ...
T L, Simon, R, Henderson
openaire   +2 more sources

Active transport membrane concentration amplifiers

Journal of Theoretical Biology, 1984
Three different active transport membrane configurations are suggested for achieving concentration amplification in a circulating substrate solution. The steady-state characteristics of the structures are investigated on the basis of a linear approximation of the rate of active transport.
openaire   +2 more sources

Effect of staphylokinase concentration on plasminogen activation

Biochimica et Biophysica Acta (BBA) - General Subjects, 1995
Activation of Glu- and Lys-plasminogen by various concentrations of recombinant staphylokinase (SAK) were studied by the generation of amidolytic activity from the chromogenic substrate S-2251(H-D-Val-Leu-Lys-pNA) and by SDS-PAGE analysis. Surprisingly, excess SAK decreased and fixed the rate of S-2251 hydrolysis in a mixture of Lys-plasminogen and SAK.
K, Arai, J, Mimuro, S, Madoiwa, M, Matsuda, T, Sako, Y, Sakata   +5 more
openaire   +2 more sources

The activity of concentrated solutions of carbonic anhydrase

Biochimica et Biophysica Acta (BBA) - Specialized Section on Enzymological Subjects, 1963
Abstract A rapidly recording stopped-flow apparatus has been used to measure the rate of reactions catalysed by carbonic anhydrase. The method allows high concentrations of enzyme to be used so that the contributions to the observed rate by the non-catalysed and buffer-catalysed rates become unimportant.
J C, KERNOHAN, W W, FORREST, F J, ROUGHTON   +2 more
openaire   +2 more sources

Plasma glutamate concentration and lymphocyte activity

Journal of Cancer Research and Clinical Oncology, 1988
Elevated glutamate concentrations are commonly observed in tumor patients, and glutamate was recently found to competitively inhibit the membrane transport of cystine. We therefore investigated the possibility that elevated plasma glutamate levels may damage the immune system.
W, Dröge, H P, Eck, M, Betzler, P, Schlag, P, Drings, W, Ebert   +5 more
openaire   +2 more sources

Concentration Profiles near an Activated Enzyme

The Journal of Physical Chemistry B, 2008
When a resting enzyme is activated, substrate concentration profile evolves in its vicinity, ultimately tending to steady state. We use modern theories for many-body effects on diffusion-influenced reactions to derive approximate analytical expressions for the steady-state profile and the Laplace transform of the transient concentration profiles. These
Soohyung, Park, Noam, Agmon
openaire   +2 more sources

Platelet Activity in Washed Platelet Concentrates

Anesthesia & Analgesia, 2004
Life-threatening anaphylaxis or febrile nonhemolytic transfusion reactions after transfusion of platelet concentrates (PCs) is a serious clinical problem caused by the sensitizing of recipients to plasma components, such as immunoglobulin A, or by cytokines. There is a possible indication for washing of PCs in these thrombocytopenic patients.
Schoenfeld H, Muhm M, Doepfmer U, Exadaktylos A, Radtke H   +4 more
openaire   +3 more sources

Concentration-dependent inducing activity of activin A

Roux's Archives of Developmental Biology, 1991
Human recombinant activin A, which is identical with erythroid differentiation factor (EDF), was tested for its mesoderm-inducing activity in concentrations from 0.3-50 ng/ml, using ectoderm of Xenopus late blastula (Stage 9) as the responding tissue.
Takashi, Ariizumi, Naomi, Moriya, Hideho, Uchiyama, Makoto, Asashima   +3 more
openaire   +2 more sources