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05). Treatment with betelnut polyphenols significantly improved blood oxygen saturation, alleviated organ damages, decreased MDA content and increased SOD activity and GSH content in the tissues, and significantly lowered serum levels of inflammatory cytokines in rats with acute exposure to high-altitude hypoxia (<br /><br /> &lt; 0.05).<br /><br /> Betelnut polyphenols provides protection of the vital organs against acute high-altitude hypoxia in rats by enhancing the antioxidant capacity and reducing inflammatory response.<br /><br />Betelnut polyphenols provides protection of the vital organs against acute high-altitude hypoxia in rats by enhancing the antioxidant capacity and reducing inflammatory response.<br /><br /> To investigate the therapeutic effect of rCsHscB derived from <br /><br /> <br /><br /> on dextran sodium sulfate (DSS)-induced chronic ulcerative colitis in mice.<br /><br /> C57BL/6 mice were randomized into negative control (NC) group (<br /><br /> = 10), rCsHscB group (<br /><br /> =10), DSS group (<br /><br /> =15), and DSS+rCsHscB group (<br /><br /> =15), and in the latter two groups, chronic ulcerative colitis was induced in the mice using 2% DSS. In rCsHscB and DSS+ rCsHscB groups, the mice received intraperitoneal injections of 125 μg/mL rCsHscB on the 4th and 7th day following DSS administration, and PBS was injected in the other two groups. The mice were euthanized on the 84th day, and pathological changes of the colon were evaluated by HE and Masson staining. The levels of CD4<br /><br /> and CD8<br /><br /> T cells in the peripheral blood and lamina propria gastric lymphocytes (LPL) were analyzed by flow cytometer; the levels of IL-6, MCP-1 and IL-10 in colon homogenate were determined using ELISA, and the phosphorylation of ERK1/2, JNK and P38 was detected with Western blotting.<br /><br /> Comnduced chronic ulcerative colitis in mice possibly by inhibiting the production of pro-inflammatory factors and regulating the balance of CD4+/CD8+T cells through the MAPK pathway.<br /><br /> To observe the changes in autophagy of cisplatin-resistant I-10 testicular cancer cells (I-10/DDP cells) in response to cisplatin treatment and the effect of silencing ATG5 and ATG7 on autophagy and proliferation of cisplatin-treated cells.<br /><br /> I-10/DDP cells treated with 15 μmol/L cisplatin for 12 h were examined for expressions of LC3 and p62 by Western blotting and for autophagy level through transmission electron microscopy and mCherry-GFP-LC3B. I-10/DDP cells were transfected with short hairpin RNAs shRNA-ATG5 or shRNA-ATG7 <br /><br /> Lipfectamine2000, the empty vector (NC group), or Lipfectamine2000 alone (blank control group), and the cellular expressions of ATG5 and ATG7 were detected with Western blotting. The transfected cells were treated with 15 μmol/L cisplatin for 12 h, after that the expressions of LC3 and p62 were detected with Western blotting. Transmission electron microscopy and mCherry-GFP-LC3B were used to detect autophagy level in the cells. MTT assay and colony-forming assay were performed to aferation.<br /><br /> To investigate the effect and safety of <br /><br /> (<br /><br /> ) expressing gas vesicle (GVs) for enhancing the efficacy of tumor ablation by high intensity focused ultrasound (HIFU) in tumor-bearing mice.<br /><br /> Thirty-two female BALB/c mice were used to establish mouse models bearing 4T1 tumor, which were randomized into GVs group [<br /><br /> BL21 (AI)-PET28a-Arg1] and control group (PBS), and the efficacy of HIFU ablation was evaluated by examining coagulative necrotic volume and pathology of the tumors. Another 104 BALB/c mice were also randomly divided into GVs group and control group, and body weight changes of the mice were recorded on days 1, 4 and 15 after intravenous injection of <br /><br /> containing GVs or PBS. White blood cells, red blood cells, hemoglobin and platelet counts and liver and renal function parameters of the mice were detected, and serum levels of TNF-α and IL-1β were examined using ELISA. The pathological changes in the liver and spleen were evaluated using HE staining to assess the safety of the treatments.<br /><br /> HIFU ablation resulted in a significantly greater volume of coagulative necrosis and severer tissue damage in GVs group than in the control group (<br /><br /> &lt; 0.001). In the 104 BALB/c mice without tumor cell inoculation, intravenous injection of <br /><br /> expressing GVs, as compared with PBS, did not significantly affect body weight or cause changes in white blood cell, red blood cell and platelet counts or hemoglobin level (<br /><br /> 1=0.59, <br /><br /> 2=0.27, <br /><br /> 3=0.76, <br /><br /> 4=0.81). [https://www.selleckchem.com/products/ms1943.html MS1943] The liver and kidney function parameters (<br /><br /> 1=0.12, <br /><br /> 2=0.46, <br /><br /> 3=0.62, <br /><br /> 4=0.86) and serum levels of TNF-α and IL-1β (<br /><br /> 1=0.48, <br /><br /> 2=0.56) were all comparable between GVs group and control group. No obvious pathological changes were detected in the liver and spleen tissues in either GVs group or the control group.<br /><br /> expressing GVs is safe for enhancing the ablation effect of HIFU in tumor-bearing mice.<br /><br />E.coli expressing GVs is safe for enhancing the ablation effect of HIFU in tumor-bearing mice.<br /><br /> To prepare metallic organic nanoparticles that produce synergistic effect in high-intensity focused ultrasound (HIFU) therapy of tumors.<br /><br /> Glucose oxidase (GOD), MnO<br /><br /> , ferric iron (Fe<br /><br /> ) and doxorubicin (DOX) were self-assembled by physical adsorption with previously prepared manganese dioxide (MnO<br /><br /> ) nanoparticles to obtain GOD-MnO<br /><br /> -Fe<br /><br /> -DOX nanoparticles (GMFD NPs). HepG2 tumor-bearing nude mouse models were given intravenous injections of normal saline or GMFD NPs followed 4 h later by HIFU at the acoustic power of 90 W with a total treatment time of 3 s. The changes of tumor gray value before and after HIFU irradiation were observed and 24 h after HIFU irradiation, coagulation necrosis in the tumor tissues was examined; the histological changes of the tumor tissues were observed with HE staining.<br /><br /> We successfully prepared GMFD NPs, which had an average particle size of 131.23±0.84 nm with a surface potential of 21.87±1.72 mV. GMFD NPs, with a drug loading rate of 40.18%, was capable of releasing more than 77.2% of the loaded DOX within 4 h in acidic environment. In the tumor-bearing mouse models, HIFU irradiation following GMFD NP injection, as compared with saline injection, resulted in significantly enhanced gray value of the tumor (25.5±4.5 <br /><br /> 18.7±3.9, <br /><br /> =0.04) and greater volume of coagulation necrosis (105.80 ± 1.21 mm<br /><br /> <br /><br /> 38.02 ± 0.34 mm<br /><br /> ). The energy efficiency factor (EEF) was significantly lower in GMFD NPs group than in saline group (1.79 <br /><br /> 4.97, <br /><br /> &lt; 0.001).<br /><br /> GMFD NPs prepared in this study can enhance tumor ablation efficacy of HIFU and release DOX for further treatment of the residual tumor tissue in mice.<br /><br />GMFD NPs prepared in this study can enhance tumor ablation efficacy of HIFU and release DOX for further treatment of the residual tumor tissue in mice.