ABSTRACT
Background: Triiodothyronine(T3) is a hormone secreted from thyroid gland which exerts a stimulating effect on metabolism. The disorder of thyroid system brings about several serious diseases like hypothymidism or hyperthyroidism. Therefore, the determination of T in blood is very important on monitoring thyroid function. Methods: Rabbit anti-T3 antibody was generated by immunization of T-BSA as an immunogen and purified hom antisera using Affi-gel protein A kit. The titer and specificity of purified antibody were characterized. To detect T3, competitive ELISA was performed using anti-T3 antibody and T3-HRP conjugate which was synthesized by glutaraldehyde method. The sensitivity and precision assay wer~e deterrnined and compared with that of RIA. Results: The titer of purified anti-T3 antibody was about 1:100 and the optimal dilution of T3- HRP conjugate was 1:1000. When the standard curve was constructed by ELISA, its sensitivity was about 0.5ng/ml. The eoefficient variations of intra- and inter-assay were 4.9~9.3% and 7.5~13.8%, respectively. The results obtained by ELISA and RIA correlated well with each other(n =50, r= 0.97), The linear regression equation was y= 1.09*0.08(P<0.01). Conclusion: We successfully developed a method for the measurement of T3 on ELISA which was based on competitive reaction between antigen(T3) and enzyme labeled antigen(T3-HRP). These results demonstrated that competitive ELISA is a convenient, fast, reproducible and aecurate method for the determinstion of T in serum and can be used as practical alternative to RIA.
Subject(s)
Enzyme-Linked Immunosorbent Assay , Glutaral , Hyperthyroidism , Immune Sera , Immunization , Linear Models , Metabolism , Methods , Sensitivity and Specificity , Staphylococcal Protein A , Thyroid Gland , TriiodothyronineABSTRACT
Unexplained incidental intracranial hemorrhages during induction of general anesthesia are very rare. When it dose occur, anesthetists are involved in serious problems which can lead to disaster. We had a case where a hidden cerebral aneurysm ruptured during the induction in a patient. A 56 year old female was scheduled for a skin graft procedure on her face, anterior chest and both arms. For general anesthesia, she was induced with 300 mg of thiopental and 75 mg of succinylcholine. This was followed by endotraeheal intubation. The Anesthesia was maintained with N2O/O2 and enflurane. Appoximately 10 minutes after the induction was started the patient's pupil became fully dilated and we observed that her light reflexes were gone. Consequently, all anesthetics were discontinued, and the schedule was cancelled. She had a brain CT taken which showed subarachnoid hemorrhage. She died of rebleeding from cerebral aneurysm on the 12th postoperative day during the recovery process.