Effect of the Synadenium carinatum latex lectin (ScLL) on Leishmania (Leishmania) amazonensis infection in murine macrophages.

Antiparasitic effect of a lectin isolated from Synadenium carinatum latex (ScLL) was evaluated against Leishmania (Leishmania) amazonensis promastigotes/amastigotes. Pretreatment of murine inflammatory peritoneal macrophages with ScLL reduced by 65.5% the association index of macrophages and L.

Serological reactivity of different antigenic preparations of Leishmania (Leishmania) amazonensis and the Leishmania braziliensis complex.

Total antigen from Leishmania (Leishmania) amazonensis and isolates from the Leishmania braziliensis complex, along with their respective antigenic fractions obtained by affinity chromatography on concanavalin-A-Sepharose and jacalin-agarose columns evaluated using immunoenzymatic ELISA assay. For this, serum samples from 229 patients were used, grouped as American tegmental leishmaniasis (n masculine=58), visceral leishmaniasis (n masculine=28), Chagas disease (n masculine=49), malaria (n masculine=32), tuberculosis (n masculine=13) and healthy volunteers (n masculine=49). Samples from American tegmentary leishmaniasis showed higher reactivity with antigens isolated from the Leishmania braziliensis complex than with antigens from Leishmania amazonensis (p<0.

Protective effect of lectin from Synadenium carinatum on Leishmania amazonensis infection in BALB/c mice.

The protective effect of the Synadenium carinatum latex lectin (ScLL), and the possibility of using it as an adjuvant in murine model of vaccination against American cutaneous leishmaniasis, were evaluated. BALB/c mice were immunized with the lectin ScLL (10, 50, 100 microgram/animal) separately or in association with the soluble Leishmania amazonensis antigen (SLA). After a challenge infection with 10(6) promastigotes, the injury progression was monitored weekly by measuring the footpad swelling for 10 weeks.

Anti-asthmatic potential of a D-galactose-binding lectin from Synadenium carinatum latex.

Extracts from the plant Synadenium carinatum latex are widely and indiscriminately used in popular medicine to treat a great number of inflammatory disorders and although the mechanisms underlying these effects remain undefined, the lectin isolated from S. carinatum latex (ScLL) is thought to be in part responsible for these anti-inflammatory effects. In order to elucidate possible immunoregulatory activities of ScLL, we investigated the effects of ScLL administration in models of acute and chronic inflammation.

Levels of immunoglobulin A1 and messenger RNA for interferon gamma and tumor necrosis factor alpha in total saliva from patients with diabetes mellitus type 2 with chronic periodontal disease.

Background: Diabetes mellitus and periodontal disease have high incidence in the general population and are associated with various degrees of dysfunction in the immune system. It has been shown that diabetic patients with severe periodontal disease have more complications of diabetes and less effective metabolic control compared with diabetic patients with healthy gingiva. Patients with diabetes and severe periodontal disease present higher levels of serous immunoglobulin A (IgA).

Effect of imidocarb and levamisole on the experimental infection of BALB/c mice by Leishmania (Leishmania) amazonensis.

The adverse effects from using currently available drugs for the treatment of leishmaniasis have motivated the search for new therapeutical agents. The aim of this work was to evaluate the effect of imidocarb and levamisole on the treatment of BALB/c mice experimentally infected by Leishmania (Leishmania) amazonensis. BALB/c mice were infected with 10(6) promastigotes of L.

[Immunoglobulin isotype and IgG subclass profiles in American tegumentary leishmaniasis].

The present work investigated the serum antibody profiles in 37 patients with American tegumentary leishmaniasis, who were attended at Hospital de Clinicas - Universidade Federal de Uberlandia, MG, Brazil. The immunoglobulin class and IgG subclass profiles were analyzed by indirect ELISA using Leishmania (Leishmania) amazonensis soluble antigen. The antibody avidity was determined by 6 M urea treatment after incubation with immunoenzymatic conjugate.

Comparative effect of ion calcium and magnesium in the activation and infection of the murine macrophage by Leishmania major.

Amastigotes of Leishmania major have a great ability to evade destruction in host cells. This study investigated the activation in resident, inflammatory macrophages and J774 cells in vitro treated with lipopolysaccharide (LPS), soluble Leishmania antigen (SLA), calcium ionophore (CaI) and magnesium (Mg2+) alone or combined. An increase in nitric oxide (NO) production was observed in J774 or inflammatory macrophages treated with LPS alone or in combination with SLA and CaI.