Assessment of intralesional cytokine profile of cutaneous leishmaniasis caused by Leishmania donovani in Sri Lanka. 2019

Lahiru Sandaruwan Galgamuwa, and Buthsiri Sumanasena, and Devika Iddawela, and Susiji Wickramasinghe, and Lalani Yatawara
Department of Parasitology, Faculty of Medicine, University of Peradeniya, Peradeniya, 20400, Sri Lanka. lahiruahs@yahoo.com.

Cytokines play a vital role in the host immune response to infection by initiating the healing process and/or accelerating the progression of the disease in cutaneous leishmaniasis (CL). Very little evidence is available on cytokine profiles and their regulatory function in CL patients in Sri Lanka. The aim of this study was to determine the cytokine expression pattern of IFN-γ, IL-4, IL-11 and IL-12p40 in CL patients and in healthy volunteers. Patients with suspected CL lesions attending to the Dermatology Clinic at the Anuradhapura Teaching Hospital were included in the study. Reverse transcription real time polymerase chain reaction (real-time RT-PCR) was performed to determine the relative expression level of target cytokines. Expression levels were quantified by 2- ∆∆CT equation. The expression of cytokines IFN-γ, IL-4, IL-11 and IL-12p40 were significantly higher in CL patients compared to healthy volunteers (p <  0.05). There was a significant association between the expression of IFN-γ and the duration of the lesion (p = 0.021). Wet CL lesions showed significantly higher expression of IL-4, IL-11 and IL-12p40 (p = 0.039, 0.018 and 0.021 respectively) compared to dry lesions. Papulo-nodular lesions showed significantly high expression of IFN-γ (p = 0.023). However, cytokine expression was not significantly associated with the number, size and the locations of lesions. The expression levels of all cytokines tested in the present study were significantly (p <  0.05) high in CL patients. Th1 response (IFN-γ and IL-12p40) had higher expression levels compared to Th2 (IL-4) and IL-11 in CL patients.

UI MeSH Term Description Entries
D007893 Leishmania donovani A parasitic hemoflagellate of the subgenus Leishmania leishmania that infects man and animals and causes visceral leishmaniasis (LEISHMANIASIS, VISCERAL). The sandfly genera Phlebotomus and Lutzomyia are the vectors. Leishmania (Leishmania) donovani,Leishmania leishmania donovani,Leishmania donovanus,Leishmania leishmania donovanus,donovani, Leishmania leishmania,donovanus, Leishmania,donovanus, Leishmania leishmania,leishmania donovanus, Leishmania
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005260 Female Females
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D013188 Sri Lanka Country in southern Asia, an island in the Indian Ocean, south of India. The capital is Colombo. Ceylon
D016207 Cytokines Non-antibody proteins secreted by inflammatory leukocytes and some non-leukocytic cells, that act as intercellular mediators. They differ from classical hormones in that they are produced by a number of tissue or cell types rather than by specialized glands. They generally act locally in a paracrine or autocrine rather than endocrine manner. Cytokine
D016773 Leishmaniasis, Cutaneous An endemic disease that is characterized by the development of single or multiple localized lesions on exposed areas of skin that typically ulcerate. The disease has been divided into Old and New World forms. Old World leishmaniasis is separated into three distinct types according to epidemiology and clinical manifestations and is caused by species of the L. tropica and L. aethiopica complexes as well as by species of the L. major genus. New World leishmaniasis, also called American leishmaniasis, occurs in South and Central America and is caused by species of the L. mexicana or L. braziliensis complexes. Leishmaniasis, American,Leishmaniasis, New World,Leishmaniasis, Old World,Oriental Sore,American Leishmaniasis,Cutaneous Leishmaniases,Cutaneous Leishmaniasis,Leishmaniases, Cutaneous,New World Leishmaniasis,Old World Leishmaniasis,Sore, Oriental

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