scholarly journals Isolation and study of the properties of an interferon-like inhibitor of viruses from normal human blood serum

1986 ◽  
Vol 22 (2) ◽  
pp. 195-200
Author(s):  
G. T. Mavlanov ◽  
S. A. Auelbekov ◽  
Kh. A. Aslanov
Keyword(s):  
Blood Serum ◽  
Human Blood ◽  
Human Blood Serum ◽  
Normal Human ◽  
Normal Human Blood

Studies of fungistatic activity in normal human blood serum

1963 ◽  
Vol 2 (1) ◽  
pp. 1-7 ◽  
Author(s):  
A.R. Memmesheimer ◽  
E.G. McNall ◽  
T.H. Sternberg
Keyword(s):  
Blood Serum ◽  
Human Blood ◽  
Human Blood Serum ◽  
Fungistatic Activity ◽  
Normal Human ◽  
Normal Human Blood

scholarly journals Fractional withdrawal of complement and amboceptor by means of antigen. (preliminary note.)

1911 ◽  
Vol 84 (571) ◽  
pp. 277-279
Keyword(s):  
Blood Serum ◽  
Human Blood ◽  
Complete Removal ◽  
Normal Serum ◽  
Preliminary Note ◽  
Normal Human ◽  
Relationship Of ◽  
Artificial Mixtures ◽  
Normal Human Blood

The problem which forms the objective of the present investigation is the determination of the extent to which complement and amboceptor are withdrawn by amounts of antigen which are insufficient to cause complete removal of these two substances. In this investigation the source of both complement and amboceptor was normal human blood serum, which was employed alone when it was desired to preserve the natural relationship of complement and amboceptor; when it was desired to vary this relation, artificial mixtures of complement and amboceptor were prepared, which presented wide divergence from the relation obtaining in normal serum.

Determination of Phosphodiesterase I Activity in Human Blood Serum

1975 ◽  
Vol 21 (10) ◽  
pp. 1383-1387 ◽  
Author(s):  
Ivo Hynie ◽  
Mary Meuffels ◽  
Wojciech Janusz Poznanski
Keyword(s):  
Blood Serum ◽  
Human Blood ◽  
Normal Values ◽  
Bone Cancer ◽  
Human Blood Serum ◽  
Normal Human ◽  
Subsequent Measurement ◽  
Hydrolysis Of ◽  
Nitrophenyl Ester

Abstract Phosphodiesterase I (EC 3.1.4.1) activity was detected in normal human blood serum. The enzyme is stable at laboratory temperature for three days, but is inactivated at pH <7. The pH for optimum activity increases with the substrate concentration (under the conditions used, from pH 9.0 to 10.2) and, conversely, the Km increases with pH and buffer concentration. The enzyme is inhibited by ethylenediaminetetraacetate but not by phosphate (0.1 mol/liter). We developed a simple quantitative method for its determination, based on hydrolysis of the p-nitrophenyl ester of thymidine 5'-monophosphate and subsequent measurement of the liberated p-nitrophenol at 400 nm in NaOH (0.1 mol/liter). Normal values (mean ± 2 SD) were determined to be 33 ± 6.4 U/liter. Preliminary studies indicate that phosphodiesterase I activity is greater than normal in serum of patients with necrotic changes in the liver or kidney or in cases of breast cancer, but not in that of patients with myocardial infarction, bone cancer, lung cancer, or chronic liver cirrhosis.

Human Blood Serum Rich in Factor V

1970 ◽  
Vol 24 (03/04) ◽  
pp. 334-337 ◽  
Author(s):  
R Honorato
Keyword(s):  
Blood Serum ◽  
Human Serum ◽  
Human Blood ◽  
Human Blood Serum ◽  
Factor V ◽  
The Stability

Summary1. A technique to obtain human serum rich in factor V is described.2. Calcium increases the stability of factor V in the serum.

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