Chutharut RidruechaiShinsaku SakuradaHideki YanaiNorio YamadaPacharee KantipongSurachai PiyaworawongPanadda DhepaksonSrisin KhusmithNaoto KeichoMahidol UniversityNational Center for Global Health and MedicineJapan Anti-Tuberculosis AssociationChiang Rai Regional HospitalThailand Ministry of Public Health2018-05-032018-05-032011-07-01Southeast Asian Journal of Tropical Medicine and Public Health. Vol.42, No.4 (2011), 876-889012515622-s2.0-80054928701https://repository.li.mahidol.ac.th/handle/20.500.14594/12455The T helper type 1 (Th1) immune response plays an important role in protective immunity, pathophysiology and development of tuberculosis (TB). To investigate whether osteopontin (OPN) and other Th1 response-related molecules are associated withTB disease status, including co-infection with HIV, and response to anti-TB treatment, circulating levels of full-length OPN (F-OPN), thrombincleaved N-terminal fragment of OPN (N-half OPN), IFN-γ, IP-10, IL-18, IL-12/ IL-23 (p40), IL-10, IL-15 and C-reactive protein (CRP) were measured before and after anti-TB treatment. Patients with newly active pulmonary TB had significantly higher plasma levels of F-OPN, IFN-g and CRP than healthy controls (HC). F-OPN, N-half OPN, IFN-γ, IP-10, IL-18 and IL-10 levels were higher in patients with extensive TB/HIV co-infection than in patients with a single disease of TB or HIV. Plasma levels of F-OPN correlated well with those of IP-10, IL-18 and N-half OPN among patients with active TB. The F-OPN, IFN-γ, IP-10 and CRP levels decreased significantly after effective anti-TB treatment. These data suggest that circulating OPN and Th1 response-related molecules, including IFN-γ, may be regulated in response to expansion of active TB and could serve as markers of disease activity before and during treatment.Mahidol UniversityMedicineArticleSCOPUS