title: Cytokines and NO in American tegumentary leishmaniasis patients: profiles in active disease, after therapy and in self-healed individuals.
abstract: Studies suggest the influence of immune response on the successful treatment of American tegumentary leishmaniasis (ATL), and indicate the existence of protective immunity in self-healed patients. Thus, the aim of this work was to quantify interferon-gamma (IFN-γ), tumor necrosis factor-alpha (TNF-α), interleukin (IL-) 10, IL-17, IL-22 and nitric oxide (NO) in culture supernatants of PBMC from patients with active disease (AD), after treatment (AT), and from self-healed (SH) and healthy subjects (CT), in response to Leishmania (Viannia) braziliensis insoluble antigen (AgIns). All groups of patients produced IFN-γ, indicating a predominant proinflammatory profile. AD and AT patients presented TNF-α levels, with a slight increase after therapy, whereas it was weakly quantified in SH. Interestingly, NO secretion was significant in these individuals, whereas IL-17 appeared in low levels and seems to be regulated by NO. Although IL-22 was detected in AD, its role is still questionable. The presence of IL-10 in all groups of patients suggests that the cytokine plays distinct roles in the disease. These results indicate that specific cellular immunity takes part against Leishmania, but with some similarities between the different clinical states herein described; these mediators seem to be necessary for the cure to occur.
authors: Departamento de Imunologia, Centro de Pesquisas Aggeu Magalhães (CPqAM/FIOCRUZ), Recife, PE, Brazil. marinaasouza@gmail.com
authors: Marina
authors: M
authors: de Assis Souza
authors: Maria C A Brelaz
authors: MC
authors: de Castro
authors: Andresa Pereira
authors: AP
authors: de Oliveira
authors: Amanda Ferreira
authors: AF
authors: de Almeida
authors: Thays Miranda
authors: TM
authors: de Almeida
authors: Luiza C
authors: LC
authors: Reis
authors: Ângela Cristina Rapela
authors: ÂC
authors: Medeiros
authors: Maria Edileuza Felinto
authors: ME
authors: de Brito
authors: Valéria Rêgo Alves
authors: VR
authors: Pereira
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000953:Antigens, Protozoan / Q000276:immunology; D016207:Cytokines / Q000096:biosynthesis* / Q000276:immunology; D005260:Female; D006801:Humans; D007892:Leishmania braziliensis / Q000276:immunology*; D016773:Leishmaniasis, Cutaneous / Q000276:immunology* / Q000378:metabolism*; D007963:Leukocytes, Mononuclear / Q000276:immunology / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009569:Nitric Oxide / Q000096:biosynthesis*; D055815:Young Adult
chemical_list: D000953:Antigens, Protozoan; D016207:Cytokines; D009569:Nitric Oxide