Development of a radioimmunoassay for some agonists of growth hormone-releasing hormone.
Development of a radioimmunoassay for some agonists of growth hormone-releasing hormone.
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开发一些生长激素释放激素激动剂的放射免疫测定法。
DOI：
10.1111/j.1399-3011.1993.tb00127.x
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
A. Schally
中科院分区：
文献类型：
--
作者：
K. Groot;V. Csernus;J. Pinski;J. Zsigo;Z. Rékási;M. Zarándi;A. Schally
A radioimmunoassay (RIA) method was developed for determination of superactive GH-RH agonist Dat1,Ala15,Nle27 GH-RH(1-28)Agm29 (MZ-2-51) and some of the related analogs in biological fluids. The analogs were radioiodinated using the Bolton-Hunter method. For the generation of antibodies, rabbits were immunized with MZ-2-51 and its C-terminal derivative Nle27 GH-RH(17-28)Agm29, conjugated to bovine serum albumin with glutaraldehyde. The resulting antibodies exhibited high affinity and very low cross-reactivity with related, naturally occurring peptides, enabling us to set up a sensitive and specific RIA. High cross-reactions with some of the MZ-2-51 derivatives like MZ-3-149 (40%) and related compounds made it possible for us to also assay these analogs with the same antibody. At B/Bo of 23-37%, the final dilutions of the antibodies ranged from 1:35000 to 1:120000. The minimal detectable concentration of MZ-2-51 was 1.4 fmol (4.6 pg)/tube. The intra- and inter-assay variations were 2.2-4.1% and 9.3-13.9%, respectively. The antibody permitted direct determination of the analogs, without extraction, from biological fluids and tissue extracts. The analogs proved to be stable in serum, and no special treatment of sample was required. Pharmacodynamic studies were performed in rats. Serum levels of GH-RH(1-29) and two of its analogs were monitored following subcutaneous injection. Serum concentration of the analogs and GH-RH(1-29) reached a peak 15 min after injection and returned to basal levels within 90-120 min. Serum GH levels also reached a peak in 15 min, but declined more slowly in the case of analogs than GH-RH(1-29). The biological half-life of both analogs was significantly longer than that of GH-RH(1-29), probably due to their reduced enzymatic degradation.
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影响因子：
56.9
作者：
GUILLEMIN, R;BRAZEAU, P;WEHRENBERG, WB
通讯作者：
WEHRENBERG, WB
单一 D-氨基酸取代的人生长激素释放因子类似物的合成和体外生物活性。
DOI：
10.1016/0006-291x(87)90400-1
发表时间：
1987
影响因子：
3.1
作者：
Sato,K;Hotta,M;Kageyama,J;Chiang,TC;Hu,HY;Dong,MH;Ling,N
通讯作者：
Ling,N
黄体生成素释放激素不同激动剂和拮抗剂对大鼠垂体和人乳腺癌细胞膜受体结合能力的比较。
影响因子：
4.8
作者：
Fekete,M;Bajusz,S;Groot,K;Csernus,VJ;Schally,AV
通讯作者：
Schally,AV
生长激素释放因子N-末端区域的结构-活性研究。
影响因子：
7.3
作者：
Coy,DH;Murphy,WA;Sueiras-Diaz,J;Coy,EJ;Lance,VA
通讯作者：
Lance,VA
生长激素释放因子 (1-29)-酰胺的超活性类似物。
DOI：
10.1016/0006-291x(84)91647-4
发表时间：
1984
影响因子：
3.1
作者：
Lance,VA;Murphy,WA;Sueiras-Diaz,J;Coy,DH
通讯作者：
Coy,DH