Measurement of human skeletal muscle acetylcholine receptor antibodies using monkey receptors.

Autor: Mickle DA, Wong PY, Humphrey JG, Griffith K, Mee AV
Jazyk: angličtina
Zdroj: Clinical biochemistry [Clin Biochem] 1983 Jun; Vol. 16 (3), pp. 163-6.
DOI: 10.1016/s0009-9120(83)90195-9
Abstrakt: Human skeletal muscle acetylcholine receptor (AChR) antibodies were assayed by a double immunoprecipitation technique using 125I-alpha-bungarotoxin as the label. Monkey AChRs were found to be superior to those from diabetic humans for analytical and practical reasons. The analytical sensitivity is 0.05 nmol alpha-bungarotoxin/L serum. The between-run and within-run precision (1 c.v.) of the assay are 13% and 3%, respectively. The normal range is 0-0.2 nmol alpha-bungarotoxin/L. There was no correlation between the antibody concentration and the clinical severity of myasthenia gravis. The clinical sensitivity and specificity of the assay for generalized myasthenia gravis are 79% and 96%, and for ocular myasthenia gravis 29% and 96%, respectively.
Databáze: MEDLINE