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Intravenous injection of Candida-derived mannan results in elevated tumor necrosis factor alpha levels in serum.
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Intravenous injection of Candida albicans into mice produced elevated serum tumor necrosis factor alpha (TNF-alpha) levels. We hypothesized that immunostimulants released in vivo from C. albicans during fungal sepsis might contribute to the elevated levels of TNF-alpha in serum. We tested this
Saccharomyces cerevisiae- and Candida albicans-derived mannan induced production of tumor necrosis factor alpha by human monocytes in a CD14- and Toll-like receptor 4-dependent manner.
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The cytokine-inducing activities of fungal polysaccharides were examined in human monocytes in culture, with special reference to CD14 and Toll-like receptors (TLRs). Tumor necrosis factor alpha (TNF-alpha) production by monocytes was markedly induced in a dose-dependent manner upon stimulation with
Secretion of TNF-alpha by alveolar macrophages in response to Candida albicans mannan.
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Resident alveolar macrophages (AM phi) were tested for their ability to respond to Candida albicans mannan. AM phi were found to produce tumor necrosis factor alpha (TNF-alpha) in vitro in response to mannan stimulation. TNF-alpha secretion was measured using ELISA and L929B cellular cytotoxicity
Evaluation of immunostimulatory activities of synthetic mannose-containing structures mimicking the β-(1->2)-linked cell wall mannans of Candida albicans.
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Immunostimulatory properties of synthetic structures mimicking the β-(1→2)-linked mannans of Candida albicans were evaluated in vitro. Contrary to earlier observations, tumor necrosis factor (TNF) production was not detected after stimulation with mannotetraose in mouse macrophages. Divalent
Mannan-binding lectin and healing of a radiation-induced chronic ulcer--a case report on mannan-binding lectin replacement therapy.
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Mannan-binding lectin is an important component of innate immunity, and insufficiency is associated with several clinical disorders. Recently, experimental replacement therapy with plasma-derived mannan-binding lectin has become an option. The current article presents the case of a patient with an
The effect of T1 and T2 cytokines on the cytotoxic T cell response to mannan-MUC1.
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MUC1 is a mucin over-expressed in breast cancer and a proposed target for immunotherapy. By immunising mice with MUC1 conjugated to mannan (M-FP), CD8(+) MHC-class-I restricted cytotoxic T lymphocytes (CTL), of high CTL precursor (CTLp) frequency (1/8000) and with significant tumour protection, can
Impact of dietary Mannan-oligosaccharide and β-Glucan supplementation on growth, histopathology, E-coli colonization and hepatic transcripts of TNF-α and NF- ϰB of broiler challenged with E. coli O 78
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Background: Using probiotics have become popular. They are considered an alternative to Antibiotic Growth Promoters (AGP). Probiotics are supplemented into animal feed for improving growth performance along with preventing and controlling
Monocyte exposure to Saccharomyces cerevisiae cell wall mannan and decreased TNF-alpha production in mild asthma: a role for mannan-binding lectin?
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A correlation between fungal exposure and aggravation of inflammatory symptoms in asthmatic individuals is well documented in the literature. However, the molecular mediators responsible for clinical symptoms due to fungal exposure in individuals with asthma are still not known. The fungal cell wall
Polysaccharide mannan components of Candida albicans and Saccharomyces cerevisiae cell wall produce fever by intracerebroventricular injection in rats.
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The cell wall mannan components of Candida albicans and Saccharomyces cerevisiae produced hyperthermic responses when injected intracerebroventricularly at doses of 10 microg in rats. Indomethacin treatment (5 mg/kg subcutaneously) completely abolished these responses. Serum interferon-gamma, tumor
Use of the mannan receptor to selectively target vaccine antigens for processing and antigen presentation through the MHC class I and class II pathways.
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Extensive studies have shown that synthetic and recombinant vaccines developed against hemoparasites have not been as effective as whole parasites or crude membrane fractions in eliciting protective immunity. A possible reason is that synthetic vaccines are not being presented in a form that induces
A Candida albicans mannoprotein deprived of its mannan moiety is efficiently taken up and processed by human dendritic cells and induces T-cell activation without stimulating proinflammatory cytokine production.
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Mannoproteins are cell wall components of pathogenic fungi and play major virulence and immunogenic roles with both their mannan and protein moieties. The 65-kDa mannoprotein (MP65) of Candida albicans is a beta-glucanase adhesin recognized as a major target of the human immune response against this
Cytokine production from murine CD4 and CD8 cells after mannan-MUC1 immunization.
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Immunotherapy with oxidized mannan-MUC1 fusion protein (M-FP) leads to a T1 immune response characterized by the generation of cytotoxic T lymphocytes (CTL), few antibodies, secretion of interleukin-2 (IL-2), IL-12, and interferon-gamma and tumor protection. Immunotherapy with reduced M-FP or fusion
Mannan-binding lectin directly interacts with Toll-like receptor 4 and suppresses lipopolysaccharide-induced inflammatory cytokine secretion from THP-1 cells.
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Mannan-binding lectin (MBL) plays a key role in the lectin pathway of complement activation and can influence cytokine expression. Toll-like receptor 4 (TLR4) is expressed extensively and has been demonstrated to be involved in lipopolysaccharide (LPS)-induced signaling. We first sought to determine
Dendritic cells previously exposed to mannan-binding lectin enhance cytokine production in allogeneic mononuclear cell cultures.
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Mannan (or mannose)-binding lectin (MBL) can bind to monocytes and dendritic cells, but the significance of such interactions is unknown. We hypothesized that the presence of MBL might prevent the differentiation of monocytes into monocyte-derived dendritic cells or interfere with the development of
Serum mannan-binding lectin (MBL) in patients with infection: clinical and laboratory correlates.
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In this study, we determined the serum levels of mannan-binding lectin (MBL) in patients with suspected or documented infection to characterize the possible role of MBL in the susceptibility to infection. We also investigated the kinetics of MBL during the infection and correlated the concentrations
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