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Biomedical subjects

Debasish Chattopadhya

Publications and source records attributed to Debasish Chattopadhya.

2 recordsLinked to original sources

Role of HCV coinfection towards disease progression and survival in HIV-1 infected children: a follow-up study of 10 years.

The present study was taken up to evaluate the pattern of disease progression and survival in a group of HIV-1 positive children, coinfected with HCV infection (n=25) in comparison to those without such coinfection (n=23). There was a significant negative correlation between the rate of decline of the CD4 + T cell percentage and the duration of the AIDS-free interval in most (80.0 per cent) of the HCV seropositive children showing such decline (r=-0.588; p=0.005). The HCV seropositive children had twofold higher risk of progression to development of AIDS than HCV seronegatives (RR=2.51; 95 per cent CI:1.34-4.69; p=0.004). There was a significant negative correlation between the rate of decline of CD4 + T cell percentage and overall survival duration for HCV seropositive group (r=-0.609; p=0.003). Moreover, children coinfected with HCV had more than twofold higher risks of death than those without HCV (RR=2.39; 95 per cent CI:1.17-4.89; p<0.01). It appears that HCV infection may be an important contributor to the rapid disease progression and increase in mortality in HCV-HIV-1 coinfected children of thalassemia major.

CD4 Lymphocyte Count↗

Malaria, leprosy and dapsone.

Although the preventive action of dapsone against P. falciparum malaria was known for many years, there was no report about the incidence of P. falciparum malaria in leprosy patients treated with dapsone, especially from areas of Southeast Asia where both leprosy and malaria are endemic. Therefore, two clinic-based malaria surveys were undertaken at a gap of 12 years, comprising 506 lepromatous leprosy patients and 499 febrile nonleprosy control subjects. Both the surveys showed that the lepromatous patients treated with MDT had only P. vivax malaria (incidence comparable to the febrile nonleprosy controls) with complete freedom from P. falciparum. On the contrary, control sujects not taking any-leprosy drugs and staying with the leprosy patients at the same beggars' home, had both P. vivax and P. falciparum malaria. It is postulated that dapsone provided protection against P. falciparum among leprosy patients.

Adolescent↗