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[Assay of specific anti-Chlamydia pneumoniae antibodies by ELISA method. 2. studies on clinical usefulness and serological diagnostic standards].
Kansenshogaku Zasshi. 1996 Aug; 70(8):830-9.KZ

Abstract

We measured anti-Chlamydia pneumoniae (C. pneumoniae) specific antibody titers by means of a newly-developed enzyme-linked immunosorbent assay (ELISA) method using an anti-C. pneumoniae specific antibody detection reagent. The clinical usefulness of this method was hereby evaluated. The IgG, IgA and IgM titers in 418 serum specimens obtained from patients with respiratory tract infections were measured by this new ELISA method, and the results were compared with the titers determined for the same specimens with the micro immunofluorescence (Micro-IF) method. The results showed good correlation coefficients for IgG, IgA and IgM. The two assay methods showed high agreement rates for positivity and for negativity. Specimens which did not yield the same results with the ELISA method and the Micro-IF method were subjected to analysis by the Western blot method, and the rates of agreement with the ELISA results were high. In addition, the child (0 approximately 15 yrs old; n = 122) and adult (16 approximately 90 yrs old; n = 133) cases were classified on the basis of being antigen-positive or antigen-negative at the initial examination, and their antibody-positive rates were determined. The adults showed no statistically significant differences in the antibody-positive rates for either IgG or IgA antibodies as a function of the pretreatment antigen status. However, the children showed statistically significant (p < 0.001) differences in the antibody-positive rates for both IgG and IgA antibodies as a function of the antigen status in the antigen-positive group compared with the rates in the antigen-negative group. Furthermore, the IgM-positive rates for the children were high in the antigen-positive group compared with the rates in the antigen-negative group, and the difference was statistically significant (p < 0.001). The IgM-positive rates in the adults were also significantly (p < 0.05) different between the antigen-positive group and the antigen-negative group. The Micro-IF method was applied to 34 specimens from antigen-positive patients, and 22 specimens were found to show an IgG titer of > or = 512 or an IgM titer of > or = 16. The diagnoses of these patients were acute respiratory disease in sixteen, pneumonia in four. Application of the ELISA-method to those 22 specimens showed all of them to exhibit IgG absorbance of > or = 0.6 and IgA absorbance of 0.2. The results described above indicate the clinical usefulness of our new ELISA method for the detection of antibodies specific for C. pneumoniae. The significance of this ELISA method for serological diagnosis of C. pneumoniae infections and the criteria for diagnosis of acute infections were also discussed.

Authors+Show Affiliations

Department of Internal Medicine, Kawasaki Medical School.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
English Abstract
Journal Article

Language

jpn

PubMed ID

8890551

Citation

Kishimoto, T, et al. "[Assay of Specific anti-Chlamydia Pneumoniae Antibodies By ELISA Method. 2. Studies On Clinical Usefulness and Serological Diagnostic Standards]." Kansenshogaku Zasshi. the Journal of the Japanese Association for Infectious Diseases, vol. 70, no. 8, 1996, pp. 830-9.
Kishimoto T, Kubota Y, Matsushima T, et al. [Assay of specific anti-Chlamydia pneumoniae antibodies by ELISA method. 2. studies on clinical usefulness and serological diagnostic standards]. Kansenshogaku Zasshi. 1996;70(8):830-9.
Kishimoto, T., Kubota, Y., Matsushima, T., Izutsu, H., Matsumoto, A., Soejima, R., Numazaki, K., Chiba, S., Yamazaki, T., Sasaki, N., Kaku, M., Shimada, J., Iwasaki, E., Baba, M., Koori, Y., Aihara, M., Chikumi, H., Kosaba, S., Nonaka, Y., ... Nagai, H. (1996). [Assay of specific anti-Chlamydia pneumoniae antibodies by ELISA method. 2. studies on clinical usefulness and serological diagnostic standards]. Kansenshogaku Zasshi. the Journal of the Japanese Association for Infectious Diseases, 70(8), 830-9.
Kishimoto T, et al. [Assay of Specific anti-Chlamydia Pneumoniae Antibodies By ELISA Method. 2. Studies On Clinical Usefulness and Serological Diagnostic Standards]. Kansenshogaku Zasshi. 1996;70(8):830-9. PubMed PMID: 8890551.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Assay of specific anti-Chlamydia pneumoniae antibodies by ELISA method. 2. studies on clinical usefulness and serological diagnostic standards]. A1 - Kishimoto,T, AU - Kubota,Y, AU - Matsushima,T, AU - Izutsu,H, AU - Matsumoto,A, AU - Soejima,R, AU - Numazaki,K, AU - Chiba,S, AU - Yamazaki,T, AU - Sasaki,N, AU - Kaku,M, AU - Shimada,J, AU - Iwasaki,E, AU - Baba,M, AU - Koori,Y, AU - Aihara,M, AU - Chikumi,H, AU - Kosaba,S, AU - Nonaka,Y, AU - Ouchi,K, AU - Yamamoto,T, AU - Kashiwagi,S, AU - Kawayama,T, AU - Ohizumi,K, AU - Nagai,H, PY - 1996/8/1/pubmed PY - 1996/8/1/medline PY - 1996/8/1/entrez SP - 830 EP - 9 JF - Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases JO - Kansenshogaku Zasshi VL - 70 IS - 8 N2 - We measured anti-Chlamydia pneumoniae (C. pneumoniae) specific antibody titers by means of a newly-developed enzyme-linked immunosorbent assay (ELISA) method using an anti-C. pneumoniae specific antibody detection reagent. The clinical usefulness of this method was hereby evaluated. The IgG, IgA and IgM titers in 418 serum specimens obtained from patients with respiratory tract infections were measured by this new ELISA method, and the results were compared with the titers determined for the same specimens with the micro immunofluorescence (Micro-IF) method. The results showed good correlation coefficients for IgG, IgA and IgM. The two assay methods showed high agreement rates for positivity and for negativity. Specimens which did not yield the same results with the ELISA method and the Micro-IF method were subjected to analysis by the Western blot method, and the rates of agreement with the ELISA results were high. In addition, the child (0 approximately 15 yrs old; n = 122) and adult (16 approximately 90 yrs old; n = 133) cases were classified on the basis of being antigen-positive or antigen-negative at the initial examination, and their antibody-positive rates were determined. The adults showed no statistically significant differences in the antibody-positive rates for either IgG or IgA antibodies as a function of the pretreatment antigen status. However, the children showed statistically significant (p < 0.001) differences in the antibody-positive rates for both IgG and IgA antibodies as a function of the antigen status in the antigen-positive group compared with the rates in the antigen-negative group. Furthermore, the IgM-positive rates for the children were high in the antigen-positive group compared with the rates in the antigen-negative group, and the difference was statistically significant (p < 0.001). The IgM-positive rates in the adults were also significantly (p < 0.05) different between the antigen-positive group and the antigen-negative group. The Micro-IF method was applied to 34 specimens from antigen-positive patients, and 22 specimens were found to show an IgG titer of > or = 512 or an IgM titer of > or = 16. The diagnoses of these patients were acute respiratory disease in sixteen, pneumonia in four. Application of the ELISA-method to those 22 specimens showed all of them to exhibit IgG absorbance of > or = 0.6 and IgA absorbance of 0.2. The results described above indicate the clinical usefulness of our new ELISA method for the detection of antibodies specific for C. pneumoniae. The significance of this ELISA method for serological diagnosis of C. pneumoniae infections and the criteria for diagnosis of acute infections were also discussed. SN - 0387-5911 UR - https://www.unboundmedicine.com/medline/citation/8890551/[Assay_of_specific_anti_Chlamydia_pneumoniae_antibodies_by_ELISA_method__2__studies_on_clinical_usefulness_and_serological_diagnostic_standards]_ L2 - http://www.diseaseinfosearch.org/result/9709 DB - PRIME DP - Unbound Medicine ER -