Interferon-gamma response to the treatment of active pulmonary and extra-pulmonary tuberculosis.
Int J Tuberc Lung Dis
; 21(10): 1145-1149, 2017 10 01.
Article
in En
| MEDLINE
| ID: mdl-28911359
BACKGROUND: Interferon-gamma (IFN-γ) release assays (IGRAs) are used to diagnose tuberculosis (TB) but not to measure treatment response. OBJECTIVE: To measure IFN-γ response to active anti-tuberculosis treatment. DESIGN: Patients from the Henan Provincial Chest Hospital, Henan, China, with TB symptoms and/or signs were enrolled into this prospective, observational cohort study and followed for 6 months of treatment, with blood and sputum samples collected at 0, 2, 4, 6, 8, 16 and 24 weeks. The QuantiFERON® TB-Gold assay was run on collected blood samples. Participants received a follow-up telephone call at 24 months to determine relapse status. RESULTS: Of the 152 TB patients enrolled, 135 were eligible for this analysis: 118 pulmonary (PTB) and 17 extra-pulmonary TB (EPTB) patients. IFN-γ levels declined significantly over time among all patients (P = 0.002), with this decline driven by PTB patients (P = 0.001), largely during the initial 8 weeks of treatment (P = 0.019). IFN-γ levels did not change among EPTB patients over time or against baseline culture or drug resistance status. CONCLUSION: After 6 months of effective anti-tuberculosis treatment, IFN-γ levels decreased significantly in PTB patients, largely over the initial 8 weeks of treatment. IFN-γ concentrations may offer some value for monitoring anti-tuberculosis treatment response among PTB patients.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tuberculosis
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Tuberculosis, Pulmonary
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Interferon-gamma Release Tests
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Antitubercular Agents
Type of study:
Diagnostic_studies
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Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limits:
Adult
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Female
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Humans
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Male
Language:
En
Journal:
Int J Tuberc Lung Dis
Year:
2017
Document type:
Article
Country of publication:
Francia