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  • 1
    Electronic Resource
    Electronic Resource
    .mu.-Oxo-bis(oxo) dinuclear complexes of technetium(V) with amine phenol ligands: syntheses, characterization, and x-ray crystal structures (1990)
    s.l. : American Chemical Society
    Inorganic chemistry 29 (1990), S. 1850-1856 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00335a018
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  • 2
    Electronic Resource
    Electronic Resource
    Labeling of human IgG with rhodium-105 using a new pentadentate bifunctional ligand (1990)
    s.l. : American Chemical Society
    Bioconjugate chemistry 1 (1990), S. 191-197 
    Details
    ISSN: 1520-4812
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bc00003a003
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation of radioidinated insulin and thyroid stimulating hormone using 1,3,4,6-tetrachloro-3α, 6α-diphenylglycouril (Iodogen) for radioimmunoassay (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 116 (1987), S. 193-202 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Radioiodinated insulin and thyroid stimulating hormones were prepared using 1,3,4,6-tetrachloro-3α, 6α-diphenylglycouril (Iodogen). Conditions of iodination like concentration of iodogen, reaction time, etc., were optimized to get maximum yield. Stability studies of iodogen coated tubes were carried out over a period of time. The dependence of iodination yield on varying amounts of activity and protein concentration were investigated. Iodination yield over a range of pH was also studied. The radiolabelled hormones prepared by this method were used in radioimmunoassay and were compared with tracers prepared by the Chloramine-T method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037222
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  • 4
    Electronic Resource
    Electronic Resource
    A single reagent radioimmunoassay for thyroxine in blood samples absorbed on filter paper for mass screening of neonatal hypothyroidism (1988)
    Springer
    Journal of radioanalytical and nuclear chemistry 122 (1988), S. 129-135 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A single reagent radioimmunoassay for thyroxine in blood samples absorbed on filter paper for the mass screening of neonatal hypothyroidism is described. Blood samples were collected by pricking the heel of newborn babies (3 days old) and pressing Whatman 3 filter paper against the wound. 6 mm diameter blood spots were punched out at the time of assay and incubated with 0.4 ml of a preincubated antigen-antibody complex for six hours at 37 °C. 1 ml of 22% polyethylene glycol is used for the precipitation of antigen-antibody complex. The assay has a sensitivity of 2.2 ng/ml. 500 samples collected from newborns were analyzed in the assay and gave a mean of 117.6±31.9 ng/ml.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037171
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  • 5
    Electronic Resource
    Electronic Resource
    A palladium(II) complex of a tetradentate amine-phenol ligand (1994)
    Springer
    Journal of chemical crystallography 24 (1994), S. 129-132 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A palladium(II) complex of an amine-phenol ligand N,N′-bis(2-hydroxybenzyl)1,4-diaminobutane has been synthesized and characterized by NMR, IR, and X-ray diffraction studies. Diffraction data were collected with a Nonius CAD-4 diffractometer with θ-2θ scan and MoKα radiation. The structure was solved by conventional methods resulting in anR factor of 0.022 for 1058 independent reflections. The X-ray structure shows a discrete mononuclear square planar complex in which the Pd is coordinated to the two nitrogens and two oxygens of the ligand. The complex is neutral with the Pd(II) charge balanced by deprotonation of both phenolic oxygens. Crystal data: Space group Pna21,a+8.223 Å,b+22.477 Å,c+9.190 Å;V+1698.8 Å3;Z+4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01833668
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  • 6
    Electronic Resource
    Electronic Resource
    Palladium(II) complexes of N2O2 and N2S2 ligands: Syntheses and X-ray crystal structures (1993)
    Springer
    Journal of chemical crystallography 23 (1993), S. 949-953 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Palladium(II) complexes of an imine-thiophene ligand N,N′ bis(1-methylenethiophene)-1,3-diaminopropane and an amine-phenol ligand N,N′-bis(2-hydroxybenzyl)1,3-diamino-2,2-dimethylpropane were synthesized by reacting K2PdCl4 with alcoholic solutions of the ligands. X-ray structures of the complexes were determined using data from a CAD-4 Nonius diffractometer (MoKα radiation). The structures were solved by conventional methods resulting inR factors of 0.044 and 0.061 using 1841 and 2241 independent reflections, respectively. Crystal data: Complex I, orthorhombic, space groupPbca,a=11.323(2),b=14.819(2),c=23.873(3)Å,V=4006(1)Å3,Z=8. Complex II: Space groupP21/c,a=9.169(2),b=31.920(4),c=8.902(6),β=90.38(2)°,V=2605(1)Å3.Z=4. Both complexes showed coordination of the ligands through the nitrogens only while the sulphur and the oxygen atoms were uncoordinated. Square planar coordination is completed bycis chloro ligands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01185542
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  • 7
    Electronic Resource
    Electronic Resource
    A simplified radioimmunoassay for triiodothyronine (T3) using pre-incubated labelled antigen and antibody (1986)
    Springer
    Journal of radioanalytical and nuclear chemistry 102 (1986), S. 435-441 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract We discribe the development of a simplified radioimmunoassay for triiodothyronine (T3) using pre-incubated labelled T3 and antibody. The assay is carried out by adding 50 μl of standard or sample to 0.4 ml of pre-incubated reagent dispensed in assay tubes. The reaction is allowed to proceed for about four hours and the antigen-antibody complex precipitated by the addition of 1 cm3 of 22% polyethylene glycol solution. Due to the high dissociation constant of T3-antibody complex at 37° C (2.83·10−4 S−1), the labelled antigen-antibody complex dissociates and thereby the unlabelled antigen binds with the antibody. With a four hour incubation the sensitivity of this assay is comparable to an assay done by the equilibrium method using the same antibody. Sixty serum samples were analyzed using this method and compared with the equilibrium assay (Y=0.94x+0.046 ng/cm3, r=0.98).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02047918
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  • 8
    Electronic Resource
    Electronic Resource
    Development of a direct radioimmunoassay for serum progesterone (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 196 (1995), S. 331-338 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A direct radioimmunoassay for the measurement of progesterone in human serum is described. Progesterone 11α-hemisuccinate was conjugated to tyrosine methyl ester (TME) by the mix anhydride method and then iodinated using chloramine-T. The radiochemical purity of different batches of125I-progesterone was greater than 95% and showed 70–75% binding with excess antibody. Progesterone 11α-hemisuccinate was coupled with BSA and injected to rabits. Antisera collected after three booster injections and having aK value of 1·1091/M was selected for the assay. Significant reduction in binding with antibody was seen when hormone free serum was used in the assay system. Various blocking agents were tried to reduce the serum effects and none of them were found satisfactory. From a series of optimization experiments, an assay was developed without the use of blocking agents. This assay used a much higher concentration of antibody along with lower amount of serum sample (50 μl). The optimized assay has a sensitivity of 0.5 nj/ml and a working range of 0.5 to 100 ng/ml. Serum samples were analyzed analysis showed good correlation between the results obtained from the present system and the DPC kit. (Y=0.93X+0.5,r=0.93, forn=25).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02038052
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  • 9
    Electronic Resource
    Electronic Resource
    Direct radioimmunoassay of serum progesterone using heterologous bridge tracer and antibody (1998)
    Springer
    Journal of radioanalytical and nuclear chemistry 231 (1998), S. 77 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The standardisation of a direct radioimmunoassay for progesterone using an125I labeled progesterone prepared by iodinating the tyrosine methyl ester (TME) conjugated to a progesterone hemiphthalate derivative and an antibody prepared using progesterone linked to bovine serum albumin through 11α hemisuccinate derivative is described. The hemiphthalate derivative of progesterone was prepared by reacting 11α-hydroxy progesterone with phthalic anhydride which was then conjugated to TME by using isobutyl chloroformate. The conjugate was iodinated with125I using chloramine-T as oxidising agent and purified by thin layer chromatography. Radiochemical purity of the tracer was 〉95% in all batches. The tracer gave 70–75% binding with excess antibody. Assays were optimised with 8-anilino-1-naphthalene sulphonic acid (ANS) and sodium salicylate as blocking agents to release the progesterone from binding proteins. The assay optimised with sodium salicylate as blocking agent has a sensitivity of 0.25 ng/ml and a working range of 0.25–50 ng/ml, whereas the assay with ANS has a sensitivity of 0.75 ng/ml and a working range of 0.75–100 ng/ml. Serum samples were analysed and compared with the values obtained with a homologous bridge assay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02388009
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  • 10
    Electronic Resource
    Electronic Resource
    Radioimmunoassay of somatotropin using second antibody polyethylene glycol combination separation system (1986)
    Springer
    Journal of radioanalytical and nuclear chemistry 97 (1986), S. 309-316 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract We describe a radioimmunoassay procedure for human somatotropin using second antibody — polyethylene glycol (PEG) combination for the separation of antibody bound and free antigen. The assay is done by a single incubation of 18 hours or with one hour pre-incubation and 3 hours post-incubation at room temperature (25 °C) and uses 0.1 mℓ of serum sample. The assay covers a range of 0–40 μg/ℓ and has a sensitivity of 0.6 μg/ℓ of somatotropin. The assay is validated by inter-assay and intra-assay variations, recovery and parallelism tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035676
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