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Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
Published on: September 5, 2017
EXPERIMENTAL EPIDEMIOLOGY OF TUBERCULOSIS
1Henry Phipps Institute of the University of Pennsylvania, Philadelphia.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Normal guinea pigs readily contract tuberculosis from infected cage mates. Higher exposure intensity and duration increase infection rates, suggesting transmission routes influence disease presentation.
Area of Science:
- * Veterinary Medicine
- * Infectious Diseases
- * Tuberculosis Research
Background:
- * Tuberculosis (TB) is a significant infectious disease affecting various animal species.
- * Understanding transmission dynamics is crucial for controlling TB outbreaks in animal populations.
- * Guinea pigs serve as a relevant model for studying TB pathogenesis and transmission.
Purpose of the Study:
- * To investigate spontaneous tuberculosis transmission in guinea pigs.
- * To determine the relationship between exposure intensity/duration and TB incidence.
- * To characterize the infection route and resulting pathological features.
Main Methods:
- * Normal guinea pigs were co-housed with intraperitoneally infected tuberculous guinea pigs.
- * Exposure varied in intensity and duration.
- * Animals were monitored for TB development, and pathological examinations were performed.
Main Results:
- * Guinea pigs readily contracted spontaneous tuberculosis when housed with infected cage mates.
- * Increased exposure intensity and duration correlated with higher TB incidence.
- * Infections acquired through close contact primarily exhibited characteristics of gastrointestinal tract entry, with prominent mesenteric and cervical lymph node involvement.
- * Animals in the same room but not caged together developed TB with features of bronchogenic infection, including lung and tracheobronchial lymph node lesions.
Conclusions:
- * Close contact facilitates efficient tuberculosis transmission in guinea pigs.
- * The route of exposure (direct contact vs. airborne) influences the primary site of infection and disease manifestation.
- * These findings highlight the importance of housing conditions in controlling TB spread in susceptible animal populations.
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