Genipin-crosslinked chitosan hydrogels have gained attention as promising drug delivery vehicles. To bring them one step closer to clinical applications, this study evaluates the hydrogels' in vitro biocompatibility and biodegradation. Cytotoxicity test on 3T3 fibroblasts shows that cells retain normal adhesive properties high viability gels with 3.1 4.4 mm genipin but not 1.7 genipin. The high...

Many cytokines and growth factors trigger rapid changes in gene expression upon binding to their receptors. In many cases, the mechanism by which these changes are affected is unknown. In this report, we show that interleukin-2 (IL-2). IL-3, IL-4,11-6, leukemia inhibitory factor (LIF), erythropoietin (Epo), and granulocyte-macrophage colony-stimulating factor (GM-CSF) treatment of cells causes ...

Interferon-alpha (IFN-alpha) and IFN-gamma regulate gene expression by tyrosine phosphorylation of several transcription factors that have the 91-kilodalton (p91) protein of interferon-stimulated gene factor-3 (ISGF-3) as a common component. Interferon-activated protein complexes bind enhancers present in the promoters of early response genes such as the high-affinity Fc gamma receptor gene (Fc...

Systemic lupus erythematosus are all involved autoimmune illnesses with similar clinical, genetic and pathogenic characteristics. However, it is still uncertain what characteristics these disorder’s deoxyribonucleic acid methylation patterns have in common. To determine the typical of illnesses, we undertook to analyze data for numerous inflammatory disorders a unified manner, which included sa...

Type I interferon inducers may potentially be engineered to function as antiviral and anticancer agents, or alternatively, vaccine adjuvants, all of which may have clinical applications. We recently described a simple strategy to convert a Toll-like receptor 9 (TLR9) agonist devoid of interferon α (IFNα) stimulating activity into a robust Type I interferon inducer with potent vaccine adjuvant a...

Interferon-λ mediates antifungal immunity by stimulating neutrophils to generate reactive oxygen species.

Background Dexamethasone improves the survival of COVID-19 patients in need supplemental oxygen therapy. Although its broad immunosuppressive effects are well-described, immunological mechanisms modulated by dexamethasone hospitalized with remain to be elucidated. Objective We combined functional assays and an omics-based approach investigate vitro vivo plasma peripheral blood mononuclear cells...

Macrophage-mediated effector mechanisms against the protozoan parasite Entamoeba histolytica were studied. Unstimulated macrophages were inefficient at killing E. histolytica trophozoites in vitro and were killed by the trophozoites. Conversely, immature cells of the mononuclear phagocyte lineage (promonocytes) were shown to display a strong spontaneous amebicidal activity. The acquisition of m...

Influenza virus stimulation of human lymphocytes induced high levels of immune interferon in lymphocyte cultures. The lymphocytes of normal adults produced approximately 1,000 U/10(6) cells, which was in large part gamma interferon. The lymphocytes of individuals recently vaccinated yielded very high levels (10-50,000 U/10(6) cells) of interferon. The interferon was pH 2 labile, and was not neu...