Recent data suggest that dendritic cells in lymph nodes are more prone to apoptosis, which correlates with disease progression. In addition, plasmacytoid dendritic cells isolated from blood showed a semi-mature phenotype after HIV-1 exposure, which coincided
with persistent IFN-alpha secretion. Emerging data show that semi-mature dendritic cells induce regulatory T cells CA3 order and suppress effector function. There may therefore be mechanisms by which HIV-1 affects dendritic cell immune stimulation and, in doing so, interferes with the elicitation of anti-HIV-1 responses.\n\nSummary\n\nUnderstanding how dendritic cells are functionally altered during
HIV-1 infection is crucial for the development of new immune-therapy strategies including approaches to target dendritic cells with antigen in vivo or ex vivo to induce efficient adaptive anti-HIV immunity.”
“Magnetic and magnetocaloric properties of the intermetallic compound TbAgAl have been investigated. Temperature dependence of magnetization data revealed that TbAgAl exhibits magnetic ordering at 59 K and possesses competing ferromagnetic-antiferromagnetic selleck kinase inhibitor interactions, which leads to the formation of Griffiths-like phase. The field dependence of magnetization data shows the existence of a metamagnetic-like transition at a critical field of 10 kOe. Unusually potent relaxation effects are seen in the time dependence of magnetization data in the ordered phase. The presence of spin-glass-like state is found to affect magnetocaloric properties of this compound.”
“The present manuscript reports the design, synthesis and characterization of three star-shaped polymers consisting this website of three different arylimides such as perylene (PR)-, naphthalene (NT)- and benzene (BZ) tetracarboxylicdiimide as core and polyfluorene
(PF) as arms. Chemical structure of star-shaped polymers was aimed at broadening as much as possible their absorption profile. Arylimide cored star polymers (PF-BZ, PF-NT and PF-PR) were prepared through palladium catalyzed Suzuki polycondensation to tune the band gap of the polymers. The prepared polymers were characterized by elemental analysis, NMR, GPC, UV-Vis, photoluminescence and cyclic voltammetry studies. Electrochemical and optical responses of three polymers revealed the lowering of band gap from linear PF to star-shaped polymers. TCSPC study confirmed the partial energy transfer from PF arms to arylimide cores. The unexpected keto defect in linear PF was also reduced by preparation of star polymer with large arylimide cores. TGA exhibited the enhancement of thermal stability of star polymer than linear PF.