antiparasitic/necrotisch

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Anti-parasitic effector mechanisms in human brain tumor cells: role of interferon-gamma and tumor necrosis factor-alpha.

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Toxoplasma gondii, an obligate intracellular parasite, is able to replicate in human brain cells. We recently showed that interferon (IFN)-gamma-activated cells from glioblastoma line 86HG39 were able to restrict Toxoplasma growth. The effector mechanism responsible for this toxoplasmostatic effect

Antiparasitic effects of tumour necrosis factor in vivo and in vitro.

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Early experiments in mice suggested that tumour necrosis factor (TNF) might be cytotoxic to asexual blood-stage malaria parasites. This was based on the striking activity of tumour necrosis serum (TNS) on the parasite both in vitro and in vivo, and the inability to separate by physical means the

Cytokine interactions in experimental cutaneous leishmaniasis. II. Endogenous tumor necrosis factor-alpha production by macrophages is induced by the synergistic action of interferon (IFN)-gamma and interleukin (IL) 4 and accounts for the antiparasitic effect mediated by IFN-gamma and IL 4.

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Tumor necrosis factor-alpha (TNF-alpha) strongly activates murine peritoneal macrophages (M phi) for killing of amastigotes from Leishmania major in the presence of low amounts of interferon-gamma (IFN-gamma). Recently, we found that IFN-gamma and interleukin 4 (IL 4) also synergistically enhance

Antileishmanial activity of hydrolyzable tannins and their modulatory effects on nitric oxide and tumour necrosis factor-alpha release in macrophages in vitro.

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A series of 27 hydrolyzable tannins and related compounds was tested for antiparasitic effects against both extracellular promastigote and intracellular amastigote Leishmania donovani organisms. In parallel, the compounds were evaluated for their immunomodulatory effects on macrophage functions,

Combined antiparasitic and anti-inflammatory effects of the natural polyphenol curcumin on turbot scuticociliatosis.

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The histiophagous scuticociliate Philasterides dicentrarchi is the aetiological agent of scuticociliatosis, a parasitic disease of farmed turbot. Curcumin, a polyphenol from Curcuma longa (turmeric), is known to have antioxidant and anti-inflammatory properties. We investigated the in vitro effects

Erythropoietin Levels Increase during Cerebral Malaria and Correlate with Heme, Interleukin-10 and Tumor Necrosis Factor-Alpha in India.

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Cerebral malaria (CM) caused by Plasmodium falciparum parasites often leads to the death of infected patients or to persisting neurological sequelae despite anti-parasitic treatments. Erythropoietin (EPO) was recently suggested as a potential adjunctive treatment for CM. However diverging results

Toxoplasmosis chorioretinitis mimicking acute retinal necrosis associated with local corticosteroid

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Background: The cases discussed highlight the atypical presentation and diagnostic dilemmas of toxoplasmosis with fulminant retinal necrosis and the potentially devastating visual outcomes of toxoplasma chorioretinitis following local corticosteroid

[Malaria tropica with activation of blood coagulation and detection of tumor necrosis factor (NF-alpha) in serum].

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A 38-year-old patient with cerebral P. falciparum malaria was admitted 12 days after a short trip to Kenya. The serum level of tumor necrosis factor (TNF-alpha) was elevated (251 pg/ml). In contrast, Protein C (plasma activity 36.1%; antigen concentration 31.7%) and protein C inhibitor 1 (activity

Antiparasitic activity, histopathology and physiology of Colossoma macropomum (tambaqui) exposed to the essential oil of Lippia sidoides (Verbenaceae).

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In vivo and in vitro antiparasitic activity of the essential oil of Lippia sidoides and blood and histological alterations were assessed in Colossoma macropomum (tambaqui). Essential oil concentrations of 10, 20, 40, 80, 160 and 320mg/L were assayed in vitro against monogenoideans Anacanthorus

Effects of a novel β-lapachone derivative on Trypanosoma cruzi: Parasite death involving apoptosis, autophagy and necrosis.

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Natural products comprise valuable sources for new antiparasitic drugs. Here we tested the effects of a novel β-lapachone derivative on Trypanosoma cruzi parasite survival and proliferation and used microscopy and cytometry techniques to approach the mechanism(s) underlying parasite death. The

In vitro and in vivo antiparasitic activity of Physalis angulata L. concentrated ethanolic extract against Trypanosoma cruzi.

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BACKGROUND The current treatment of Chagas disease, endemic in Latin America and emerging in several countries, is limited by the frequent side effects and variable efficacy of benznidazole. Natural products are an important source for the search for new drugs. OBJECTIVE Considering the great

Trypanosoma cruzi-induced depressive-like behavior is independent of meningoencephalitis but responsive to parasiticide and TNF-targeted therapeutic interventions.

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Inflammatory cytokines and microbe-borne immunostimulators have emerged as triggers of depressive behavior. Behavioral alterations affect patients chronically infected by the parasite Trypanosoma cruzi. We have previously shown that C3H/He mice present acute phase-restricted meningoencephalitis with

L-arginine-dependent destruction of intrahepatic malaria parasites in response to tumor necrosis factor and/or interleukin 6 stimulation.

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There is growing evidence that cytokines (interleukin [IL] 1, IL 6, interferon-gamma, tumor necrosis factor [TNF]) directly or indirectly interfere with the intrahepatic development of malaria parasites. Recent work in our laboratory clearly showed that TNF can affect the hepatic development of

The effect of suramin, tumor necrosis factor and interferon gamma on human prostate carcinoma.

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Suramin, an antiparasitic agent which has been shown to block the stimulatory effect of growth factors on certain cancers, is currently being evaluated in clinical trials and as an antineoplastic agent in patients with advanced prostate carcinoma. Preliminary studies suggested that suramin inhibits

Activation of the host response in human Plasmodium falciparum malaria: relation of parasitemia to tumor necrosis factor/cachectin, thrombin-antithrombin III, and protein C levels.

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OBJECTIVE Hemostatic alterations and elevated tumor necrosis factor/cachectin (TNF alpha) serum levels may contribute to the pathogenesis of organ complications in human Plasmodium falciparum malaria. Therefore, we examined whether altered protein C (PC) and thrombin-antithrombin III (TAT) plasma

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