background: leishmania major is an intracellular parasite transmitted through the bite of the female phlebotomine sand flies. leishmania major is able to escape the host immune defense and survive within macrophages. modulation of the nf-κb (nuclear factor-kappa b) activation and suppression of the pro-inflammatory cytokines by l. major are the main evasion mechanisms that remain to be explored...

Background: Macrophages have important role in defense against Herpes Simplex Virus type-1 (HSV-1). The present study was performed to determine the viability and nitric oxide (NO) production by HSV-1 infected mouse peritoneal macrophages (HIM). Method: The viability of macrophages was evaluated using MTT reduction assay and the production of nitrite using Griess method. Results: The ability of...

Macrophages accumulate in poorly vascularised and hypoxic sites including solid tumours, wounds and sites of infection and inflammation where they can be exposed to low levels of oxygen for long periods. Up to date, different studies have shown that a number of transcription factors are activated by hypoxia which in turn activate a broad array of mitogenic, pro-invasive, pro-angiogenic, and pro...

Objective(s): High Mobility Group Box1 (HMGB1) is a nonhistone, DNA-binding protein that serves a crucial role in regulating gene transcription and is involved in a variety of proinflammatory, extracellular activities. The aim of this study was to explore whether HMGB1 stimulation can up-regulate the expression of Toll-like Receptor 2 (TLR2) and Toll-like Receptor 4 (TLR4) on macrophages from p...

objectives the current study aimed to investigate the immunostimulatory effects of the aqueous extract of heracleum persicum on mouse peritoneal macrophages. background the immune system provides protection against infectious diseases that are caused by various microorganisms, in particular pathogenic fungi. utilization of herbal immunostimulants is one solution to improve the immunity of human...

In this study we examined enhancement effects of Artemisinin plus Glucantime and shark cartilage extract, on promastigotes and amastigotes of L.infantum in in vitro condition.The toxicity of artemisinin, glucantime and shark cartilage extract on the L. infantum promastigotes and amastigote-infected macrophages was evaluated using MTT assay. The role of these drugs in inducing apoptosis in proma...

objective(s): the periodic binding of protein expressed by mycobacterium tuberculosis h37rv with the host cell receptor molecules i.e. fibronectin (fn) is gaining significance because of its adhesive properties.  the genome sequencing of m. tuberculosis h37rv revealed that the proline-glutamic (pe) proteins contain polymorphic gc-rich repetitive sequences (pgrs) which have clinical importance i...

background: polysaccharides have long been used as immune-modulators in various pathologic conditions including inflammation and solid malignancies. objective: to evaluate the effects of zymosan and betaglucan on cytotoxic reactions in an effectortarget conjugate system. methods: blood was obtained from 20 healthy subjects; purified mononuclear leukocytes (monocytes and lymphocytes) were extrac...