Identification of Clinical Immunological Determinants in Asymptomatic VL and Post Kala-azar Dermal Leishmaniasis Patients

  • Ashish Kumar SINGH Dept. of Immunology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Vidya Nand Rabi DAS Dept. of Pathology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Ajay AMIT 1. Dept. of Immunology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Manas R DIKHIT 1. Dept. of Immunology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Vijaya MAHANTESH Dept. of Immunology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Akhilesh KUMAR Dept. of Immunology, Rajendra Memorial Research Institute of Medical Sciences, Patna, Indiش
  • Raj Kishore PANDEY Dept. of Immunology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Shyam NARYAN Dept. of Microbiology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Bipin K SINGH Dept. of Clinical Medicine, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Krishna PANDEY Dept. of Clinical Medicine, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Neena VERMA Dept. of Pathology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Pradeep DAS 5. Dept. of Molecular Biology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
  • Sanjiva BIMAL Dept. of Immunology, Rajendra Memorial Research Institute of Medical Sciences, Patna, India
Keywords: Visceral leishmaniasis, Asymptomatic infection, Cytokine, Direct agglutination test, Interleukin-10, IFN-gamma, Tumor necrosis factor-alpha

Abstract

Background: Visceral Leishmaniasis (VL) caused by protozoa belonging to the genus Leishmania, usually have anthroponotic mode of transmission and is issue of great public health importance in Indian subcontinent. Asymptomatic cases of VL and PKDL are subject of keen interest to find their role in the transmission of VL in epidemic areas. We evaluated the immunological cytokine determinants expressed in most clinical suspects of asymptomatic VL and PKDL (IL-10, IFN-γ, and TNF-α). Methods: Eighty-four participants were included at RMRIMS, Patna, India in 2016-17 out of which 64 asymptomatic individual positive for rK-39, without sign and symptoms of VL; 15 PKDL patient’s with past history of VL and 5 endemic healthy subjects were recruited from VL endemic areas. DAT and quantitative assessment of plasma cytokines was determined from the blood samples collected in a plain and sodium-EDTA vacutainer respectively from the subjects. Results: The mean level of IL-10 in DATposLOW of asymptomatic VL and PKDL was significantly higher than endemic healthy (P<0.05). The cytokine polarization index (IFN-γ versus IL-10) was significantly low in PKDL cases compared with asymptomatic VL cases in DATposLOW titre (P<0.05). This index was low again but statistically not significant in PKDL than in asymptomatic VL when TNF-α was considered against IL-10. The ratio of IFN-γ: IL-10 and TNF-α: IL-10 was observed decreased both in asymptomatic VL and PKDL cases than in healthy from endemic areas. Conclusion: Collectively we surmise from our data that asymptomatic VL can also play an important role like PKDL in transmission of VL.

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Published
2018-12-18
How to Cite
1.
SINGH AK, DAS VNR, AMIT A, R DIKHIT M, MAHANTESH V, KUMAR A, PANDEY RK, NARYAN S, K SINGH B, PANDEY K, VERMA N, DAS P, BIMAL S. Identification of Clinical Immunological Determinants in Asymptomatic VL and Post Kala-azar Dermal Leishmaniasis Patients. IJPA. 13(4):541-8.
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Original Article(s)