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Zhi-jie Liang,Jiayu Peng,Jiale Liang,Yujing Song,Weini Jia,Qing-hui Mao 한국섬유공학회 2022 Fibers and polymers Vol.23 No.12
The outstanding redox chemistry of polyoxovanadate has shown excellent catalysis prospects. In the present work,the effect of polyoxovanadate (K7[MnV13O38]·18H2O) on the catalytic polymerization of catechol was investigated for thefirst time. The synthesized polymer was applied in-situ for the dyeing of cotton under mild conditions. Various processparameters, including the dosages of catechol and polyoxovanadate and incubation temperature, which influence the colordepth, were analyzed. The effect of different time intervals on polyoxovanadate-catalyzed polymerization of catechol wasexamined using UV-vis spectroscopy. The color intensity of cotton was evaluated by means of K/S value and color difference(ΔE*). The results show that the dyeing depth of the dyed cotton fabrics gradually increased with the extension of time andthe increase in the concentration of polyoxovanadate. This work represents a novel synthetic process exploring the potentialof a polymer to be used for textile dyeing.
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Xin Zhao,Jiale Song,Qiang Wang,Yu Qian,Gui-Jie Li,Liang Pang 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.4
The comparing of shuidouchi, natto, and cheonggukjang were evaluated using physicochemical experiment, Ames test, and in vitro anticancer experiment. Cheonggukjang contained the highest amount of aroma components of amino and ammonia type nitrogens and the lowest amount of γ-glutamyltranspeptidase. Cheonggukjang showed the better sensory qualities than shuidouchi and natto. Three short-term fermented soybean foods were associated with high degree of antimutagenic activities. At a concentration of 2 mg/mL, the growth inhibitory rate of TCA8113 cells treated with cheonggukjang determined by a MTT assay was reduced by 78%; this rate of inhibition was higher than that achieved with shuidouchi (67%) and natto (55%). Cheonggukjang significantly induced apoptosis in cancer cells by upregulating Bax, caspase-3, and caspase-9, and downregulating Bcl-2 by RT-PCR and Western blotting. Our results demonstrated that cheonggukjang had the most potent in vitro anticancer effect, induced apoptosis as well as in terms of physico-chemical properties.
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Jin Yuqin,Li Jialing,Ding Liang,Zhao Qing,Song Yuxian,Li Guifeng,Ji Jun,Ni Yanhong,Hu Qingang 대한독성 유전단백체 학회 2022 Molecular & cellular toxicology Vol.18 No.1
Background Oxidative stress is involved in the pathogenesis of various inflammatory diseases, such as periodontitis. When periodontitis occurs, reactive oxygen species (ROS) are overproduced and cannot be balanced by the antioxidant defense system, resulting in tissue damage. Madecassic acid (MA), an abundant triterpenoid in Centella asiatica (L.) Urban, has been used as a wound healing, antiinflammatory, and anticancer agent. Moreover, recent studies have shown that MA has an antioxidative effect, but the underlying mechanism remains unclear. Objective Here, we established an effective oxidative stress model induced by hydrogen peroxide (H 2 O 2 ) in human periodontal ligament fi broblasts (hPDLFs) to investigate the antioxidant and protective effects of MA against cell damage and its underlying mechanism of action. Results Pretreatment with MA inhibited cell apoptosis and promoted cell invasion and migration against oxidative injury induced by H 2 O 2 . In addition, MA was able to maintain mitochondrial membrane potential (ΔΨm) under oxidative stress. Notably, we found that MA restored redox balance by reducing intracellular ROS production. Furthermore, we investigated apoptosis-related proteins and found that the levels of anti-apoptosis markers Bcl-xL and Bcl-2 were remarkably upregulated, whereas that of the pro-apoptotic marker Bax was strikingly downregulated. Conclusions Collectively, these findings suggest that MA inhibits H 2 O 2 -induced oxidative stress and apoptosis of hPDLFs by reducing intracellular ROS production to maintain ΔΨm stability.
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Yixiang Ai,Dereje Gobena Alemayehu,Genwen Mao,Yaping Liang,Ran Cao,Jiale Hu,Yimin Yang,Zhiwei Ren 대한정형외과학회 2023 Clinics in Orthopedic Surgery Vol.15 No.6
Background: To evaluate the feasibility of treating odontoid fractures in the Chinese population with two cortical screws based on computed tomography (CT) scans and describe a new measurement strategy to guide screw insertion in treating these fractures. Methods: A retrospective review of cervical computed tomographic scans of 128 patients (aged 18–76 years; men, 55 [43.0%]) was performed. The minimum external transverse diameter (METD), minimum external anteroposterior diameter (MEAD), maximum screw length (MSL), and screw projection back angle (SPBA) of the odontoid process were measured on coronal and sagittal CT images. Results: The mean values of METD and MEAD were 10.0 ± 1.1 mm and 12.0 ± 1.0 mm, respectively, in men and 9.2 ± 1.0 mm and 11.0 ± 1.0 mm, respectively, in women. Both measurements were significantly higher in men (p < 0.001). In total, 87 individuals (68%) had METD > 9.0 mm that could accommodate two 3.5-mm cortical screws. The mean MSL value and SPBA range were 34.4 ± 2.9 mm and 13.5°–24.2°, respectively, with no statistically significant difference between men and women. Conclusions: The insertion of two 3.5-mm cortical screws was possible for anterior fixation of odontoid fractures in 87 patients (68%) in our study, and there was a statistically significant difference between men and women.
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