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1

Nowoczesne aspekty diagnostyki molekularnej brucelozy

100%
Szulowski K., Murat J.
Medycyna Weterynaryjna
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2008
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tom 64
|
nr 06
741-744
The diagnostics of brucellosis is primarily based on serological investigations. Since a serologically positive response can occur from antigenically cross-reactive bacteria, the isolation and identification of the pathogen from a potentially infected host remains the gold standard as a tool for the confirmation of infection. However, this process also has drawbacks. The tests are time consuming, complex and must be performed by highly skilled personnel. The zoonotic nature of most Brucella species is a potential hazard for laboratory personnel who must manipulate the infectious agent during testing. Finally, some of the characteristics are subjective and the results are not always definitive. Recently, progress in these aspects of diagnostics has been advanced through PCR-based technologies. PCR-based assays are simple to design and carry out, rapid, inexpensive to perform and are characterized by high diagnostic values: sensitivity and specificity. The following is a review of the major assays constituting excellent progress in the diagnostics of brucellosis.
2

Zastosowanie odczynu fluorescencji w swietle spolaryzowanym w diagnostyce brucelozy bydla

71%
Szulowski K., Murat J., Iwaniak W., Weiner M., Pilaszek J.
Medycyna Weterynaryjna
|
2008
|
tom 64
|
nr 08
1019-1022
In view of the large scale of surveys, the diagnosis of brucellosis is primarily based on serological examinations. Regarding cattle, RBT, SAT, CFT, Coombs, 2-ME and ELISA are used in Poland. The process is laborious and time-consuming. The problem of differentiation between positive reactions caused by Brucella and antigenically cross-reactive bacteria remains unresolved. The aim of the study was an application of a fluorescence polarization assay (FPA) for the examinations of sera from cattle for brucellosis. Four hundred fifty sera from cattle, including 300 sera from healthy animals, 27 sera from infected animals and 123 sera originated from confirmatory investigations, were used. The results obtained in FPA were compared to the results of RBT, SAT, CFT and ELISA. All sera from healthy animals were negative in FPA, whereas sera from infected animals were positive. Among sera from confirmatory investigations, 8 sera were positive in FPA. This likewise concerned sera positive both in CFT and ELISA. All sera positive only in RBT and SAT were negative in FPA. The results of the examinations show that FPA is a useful method for the diagnosis of brucellosis in cattle.
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