Observations on the chemical nature of lead in human blood serum

1991 ◽  
Vol 81 (6) ◽  
pp. 823-829 ◽  
Author(s):  
A. J. A. Al-Modhefer ◽  
M. W. B. Bradbury ◽  
T. J. B. Simons
Keyword(s):  
Blood Serum ◽  
Human Blood ◽  
Chemical Nature ◽  
Lead Concentration ◽  
Equilibrium Dialysis ◽  
Normal Subjects ◽  
Human Blood Serum ◽  
Thiol Compounds ◽  
Fresh Serum

1. The binding of lead to human blood serum, and components of serum, was studied by titration with the addition of Pb(NO3)2 solution, monitoring the free Pb2+ concentration with a Pb2+ electrode, and by equilibrium dialysis. 2. In fresh serum, about 4999 out of 5000 parts of added lead were bound. This suggests that the free Pb2+ concentration is around 1/5000th of the total lead concentration in the serum of normal subjects, i.e. about 1 × 10−12 mol/l. 3. About 60% of the binding of lead in serum is abolished by standing in air, by dialysis or by treatment with N-ethylmaleimide. This appears to be due to the presence of thiol compounds, mainly cysteine. The remaining 40% appears to be due to protein, mainly albumin.

scholarly journals Immunoanalysis of free a-subunit of glycoprotein hormones in human blood serum and its relationships with the pituitary glycoprotein

1994 ◽  
Vol 40 (6) ◽  
pp. 44-47
Author(s):  
A. A. Bulatov ◽  
A. G. Kiselyova ◽  
T. V. Gorshkova ◽  
N. B. Akopova
Keyword(s):  
Blood Serum ◽  
Human Blood ◽  
Normal Subjects ◽  
Test System ◽  
Human Blood Serum ◽  
Glycoprotein Hormones ◽  
Diagnostic Significance ◽  
Endocrine Profile ◽  
A Subunit ◽  
The One

A radioimmunoassay test system has been designed for measurements of free a-subunit (AS) of glycoprotein hormones in human blood serum with a sensitivity of 0.15 ng/ml. This test system revealed the absence of a direct correlation between the levels of free AS and levels of glycoprotein hormones in the blood sera of women with various endocrine profile, this being indicative of the specificity of this test system, on the one hand, and, on the other, confirming the possibility of independent secretion by the pituitary of free AS into the blood. Basal blood serum level of free AS in normal subjects is low: 0,9 ng/ml in women aged 17 to 30. The level of free AS secretion in the blood of many patients with nonfunctioning tumors of the pituitary was found increased, this demonstrating the diagnostic significance of measuring free AS as a marker of such tumors.

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.

scholarly journals THE ELECTRODIALYSIS OF HUMAN BLOOD SERUM

1926 ◽  
Vol 69 (1) ◽  
pp. 113-124
Author(s):  
Adolph Bernhard ◽  
Jacob J. Beaver
Keyword(s):  
Blood Serum ◽  
Human Blood ◽  
Human Blood Serum

scholarly journals Tagetes erecta as an organic precursor: synthesis of highly fluorescent CQDs for the micromolar tracing of ferric ions in human blood serum

RSC Advances ◽  
2021 ◽  
Vol 11 (32) ◽  
pp. 19924-19934
Author(s):  
Pinky Sagar ◽  
Gopal Krishna Gupta ◽  
Monika Srivastava ◽  
Amit Srivastava ◽  
S. K. Srivastava
Keyword(s):  
Blood Serum ◽  
Hydrothermal Method ◽  
Human Blood ◽  
Human Blood Serum ◽  
Tagetes Erecta ◽  
Ferric Ions ◽  
Organic Precursor ◽  
Precursor Synthesis

TE-CQDs synthesized via the hydrothermal method for the detection of Fe3+ in HBS.

Sign in / Sign up

Export Citation Format

Share Document