| Autor: |
Toshio Ogihara, Kazushige Iinuma, Masaru Takai, Yoshihiro Kaneko, Yuichi Kumahara, Isao Ikeda, Hiroshi Shionoiri, Kunio Kurata |
| Rok vydání: |
1983 |
| Předmět: |
|
| Zdroj: |
Folia Endocrinologica Japonica. 59:1667-1677 |
| ISSN: |
0029-0661 |
| DOI: |
10.1507/endocrine1927.59.10_1667 |
| Popis: |
A simple, direct and specific radioimmunoassay for serum and urinary metanephrine was developed, in which we used 125I-Synephrine and specific antiserum generated in rabbits by injecting with metanephrine conjugated with bovine serum albumin as described by Grota and Brown. The sensitivity of the assay was 2 pg/tube. Intra- and inter-assay coefficients of variation were 2.6 approximately 7.8% and 5.0 approximately 9.6%, respectively. The recoveries of metanephrine added at two levels of 250 pg/ml and 500 pg/ml to ten serum samples and ten urine samples (hydrolyzed and diluted) were 96.7 and 108% in serum, and 94.8 and 103% in urine, respectively. Normal values of serum metanephrine were 40.3 +/- 25.8 pg/ml (mean +/- SD) from 20 normal subjects. Normal values of 24 hour urinary metanephrine excretion were 12.5 +/- 6.7 ug/day from 24 normal subjects. Serum metanephrine values for 7 patients with pheochromocytoma were 210 approximately 628 pg/ml. Urinary metanephrine values for 9 patients with pheochromocytoma 8.7 approximately 302 ug/day. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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