METHOD FOR DIFFERENTIAL DIAGNOSIS OF REPRESENTATIVES OF FAMILY CHLAMYDIACEAE Russian patent published in 2005 - IPC

FIELD: medicine, biology, molecular biology.

SUBSTANCE: invention proposes a new method for differential diagnosis of representatives of family Chlamydiaceae. Method involves isolation of DNA of pathogen, amplification using real-time polymerase chain reaction (PCR) and primers CM1 and CM2 exhibiting specificity to 5'-terminal fragment of gene omp1 followed by post-amplification analysis of curves of PCR-products melting in the presence of nonspecific fluorescent dye SYBR Green I for separation of Chlamydia species and electrophoretic separation of PCR-products. Identification of species is carried out on the basis of differences in PCR-products melting point wherein melting point curves of all fragments of omp1 are characterized by the presence of two peaks reflecting two-stage dissociation of DNA chains in sites with different A/T-saturation degree. Proposed method provides carrying out the differentiation of all species of Chlamydia that are pathogenic for humans. Except for, method provides carrying out the differentiation of Chlamydiaceae causing diseases in animals and also method is simple, rapid and can be used for direct diagnosis of clinical material samples. Invention can be used in medicine, veterinary science and virology for differential diagnosis of representatives of family Chlamydia.

EFFECT: improved method for diagnosis.

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