Moreover, in a mouse xenograft model, 5 nmol/kg p,p’-DDT resulted in increased tumor size, oxidative stress and Wnt/beta-catenin signaling. These results indicated that low concentrations of p,p’-DDT promoted colorectal cancer growth through Wnt/beta-catenin signaling, which was mediated by oxidative stress. The finding suggests an association between low concentrations of p,p’-DDT exposure and colorectal cancer progression. (C) 2014 Elsevier Ireland Ltd. All rights reserved.”
“To determine if newer influenza vaccines can safely
improve seroprotection rates of older adults, we compared three licensed trivalent inactivated vaccines (TIVs) in a randomized, Selleck Vactosertib controlled trial with evaluator blinding. Participants were non-frail adults bigger than = 65 y old, annually TIV-immunized. Study vaccines included intradermal (IDV), MF59-adjuvanted (ADV) and subunit (TIV) formulations
of equal BLZ945 in vivo potency and strain composition. Blood was obtained before vaccination (V1) and 21 (V2) and 180 d (V3) afterward and tested by hemagglutination inhibition (HAI) assay. Safety diaries were completed daily by participants and specific tolerability questions were posed regarding injections and symptoms. In total, 911 participants were immunized and 887 (97.4%) completed V3. Groups had similar demographics. General symptom rates post-vaccination were similar among groups.
Rates of injection site redness after IDV/ADV/TIV were 75%/13%/13% and rates of pain were 29%/38%/20%, respectively, but each vaccine was well tolerated, with symptoms causing little bother. Baseline antibody titers did not differ significantly among groups but B/Brisbane titers were too high for meaningful response assessments. At V2, seroprotection Sapanisertib in vivo rates (HAI titer bigger than = 40) were highest after ADV, the rate advantage over IDV and TIV being significant at 11.8% and 11.4% for H3N2 and 10.2% and 12.5% for H1N1, respectively. At day 180, seroprotection rates had declined similar to 25% and no longer differed significantly among groups. While IDV and TIV were also well tolerated, ADV induced modestly higher antibody titers in seniors to influenza A strains at 3 weeks but not 6 months post-vaccination. Immune responses to IDV and TIV were similar in this population.”
“IL-15 has pivotal roles in the control of CD8(+) memory T cells and has been investigated as a therapeutic option in cancer therapy. Although IL-15 and IL-2 share many functions together, including the stimulation of CD8 T cell proliferation and IFN-gamma production, the different in vivo roles of IL-15 and IL-2 have been increasingly recognized. Here, we explored the different effects of IL-15 and IL-2 on tumor-infiltrating (TI) T cells from resected breast tumors.