1Pulmonologist, Department of Internal Medicine (Pulmonary Division) Ardabil University of Medical Sciences, Ardabil, Iran.
2Pulmonologist, COPD Research Center, Ghaem Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
3Community Medicine Specialist , Ardabil University of Medical Sciences, Department of Community Medicine, Ardabil, Iran.
4Infectious Disease Specialist, Department of Infectious Disease, Ardabil University of Medical Sciences, Ardabil, Iran.
5Community Medicine Specialist , Department of Community Medicine, Ardabil University of Medical Sciences, , Ardabil, Iran.
Introduction: About one third of the world's population is infected with tuberculosis (TB) and each year, about 1.5 to 2 million people die from TB. Procalcitonin (PCT) is an inflammatory marker that its level has variable Materials and Methods: This conducted on patients with pulmonary TB. Data were collected using a check list. The serum level of PCT was measured by ELISA test at the beginning and after six months of treatment. All data were analyzed using SPSS 16.
Results: There are some discussions in the utilization of PCT as a diagnostic marker in active pulmonary TB. The aim of this study was to compare serum PCT before and after treatment in patients with pulmonary TB. Results: Forty-two patients with active pulmonary TB entered in this study. The mean age of the patients was 45.48 ± 12.54 years and 54.8% of them were male. Most of the patients (59.5 %) were rural inhabitants. There was a family history of TB in 26% of patients. The most common symptom (45.2%) was cough. Mean PCT prior to treatment was 1.25 ± 0.98 ng/ml. and 81% of the patients had PCT higher than 0.5 to 5. After treatment PCT level reduced significantly (P<0.001). The mean erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) before treatment were 45.88 ± 21.87 and 7.16 ± 3.98 respectively that were reduced significantly after treatment (P<0.001). Neutrophil counts before treatment was 6221 ± 3161 Cells per ml. and decreased statistically significant after treatment (P=0.01). Conclusion: Our results showed that the PCT levels in pulmonary TB were high in active disease and reduced after treatment. PCT level may be used for follow-up as a discriminative marker between active and cured pulmonary TB and predict treatment response, although the PCT assay cannot be substituted for microbiological and pathological data.
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