Capacitive Detection of Insulin Antibody enhanced by AC Electrothermal mixing

Author(s):  
James M. Porter ◽  
Paresa Modares ◽  
F. Rafael Castiello ◽  
Maryam Tabrizian
Author(s):  
Burton B. Silver ◽  
Ronald S. Nelson

Some investigators feel that insulin does not enter cells but exerts its influence in some manner on the cell surface. Ferritin labeling of insulin and insulin antibody was used to determine if binding sites of insulin to specific target organs could be seen with electron microscopy.Alloxanized rats were considered diabetic if blood sugar levels were in excess of 300 mg %. Test reagents included ferritin, ferritin labeled insulin, and ferritin labeled insulin antibody. Target organs examined were were diaphragm, kidney, gastrocnemius, fat pad, liver and anterior pituitary. Reagents were administered through the left common carotid. Survival time was at least one hour in test animals. Tissue incubation studies were also done in normal as well as diabetic rats. Specimens were fixed in gluteraldehyde and osmium followed by staining with lead and uranium salts. Some tissues were not stained.


1966 ◽  
Vol 52 (2) ◽  
pp. 276-291 ◽  
Author(s):  
Jan I. Thorell

ABSTRACT The placenta is considered to be impermeable or only slightly permeable to insulin. Insulin antibodies are transferred from mother to foetus in man and in guinea pigs. The passage of insulin-131I from mother to foetus was studied in guinea pigs with and without antibodies against insulin. Antibody-bound insulin-131I was recovered in plasma from foetuses of immunized pregnant guinea pigs, at intervals of more than 5 hours after the injection of insulin-131I to the mother. The foetal levels of insulin-131I were rather low, the highest recorded value being 27% of the maternal plasma concentration. This peak was reached 32 hours after the injection. No insulin-131I was found in the foetuses of non-immunized guinea pigs.


Diabetes ◽  
1986 ◽  
Vol 35 (5) ◽  
pp. 620-622 ◽  
Author(s):  
J. Karjalainen ◽  
M. Knip ◽  
A. Mustonen ◽  
J. Ilonen ◽  
H. K. Akerblom

1979 ◽  
Vol 44 (6) ◽  
pp. 1828-1834
Author(s):  
Asja Šiševa ◽  
Jiřina Slaninová ◽  
Tomislav Barth ◽  
Stephan P. Ditzov ◽  
Luben M. Sirakov

Isoelectric focusing on polyacrylamide gel columns of three native crystalline commercial preparations of insulin and 125I-labelled insulin was carried out. All the compounds studied contained three components of different isoelectric points. The largest fraction, having pI 5.60 ± 0.05, was common to all preparations. The other two fractions were situated in the acid region of pH between pI 4.5 and 5.2. The presence of these fractions is explained by the contamination of crystalline insulins by proinsulin and by the formation of des-amido derivatives during the dissolving and storage of insulin samples, and, in case of labelled insulin, also by the presence of heavily iodinated insulin and contaminating components. The isoelectric focusing of the complex 125I-insulin-antibody showed a peak of radioactivity having pI 6.15 ± 0.05.


Nature ◽  
1976 ◽  
Vol 262 (5571) ◽  
pp. 791-793 ◽  
Author(s):  
MECHTHILD KLOTZ ◽  
BERND GUTTE

2017 ◽  
Vol 8 (3) ◽  
pp. 545-554 ◽  
Author(s):  
Liza L. Ilag ◽  
Timothy M. Costigan ◽  
Mark A. Deeg ◽  
Robyn K. Pollom ◽  
Curtis L. Chang ◽  
...  

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