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Shi Si,Gu Huijie,Xu Jinyuan,Sun Wan,Liu Caiyin,Zhu Tong,Wang Juan,Gao Furong,Zhang Jieping,Ou Qingjian,Jin Caixia,Xu Jingying,Chen Hao,Li Jiao,Xu Guotong,Tian Haibin,Lu Lixia 생화학분자생물학회 2023 Experimental and molecular medicine Vol.55 No.-
Excessive osteoclast activation, which depends on dramatic changes in actin dynamics, causes osteoporosis (OP). The molecular mechanism of osteoclast activation in OP related to type 1 diabetes (T1D) remains unclear. Glia maturation factor beta (GMFB) is considered a growth and differentiation factor for both glia and neurons. Here, we demonstrated that Gmfb deficiency effectively ameliorated the phenotype of T1D-OP in rats by inhibiting osteoclast hyperactivity. In vitro assays showed that GMFB participated in osteoclast activation rather than proliferation. Gmfb deficiency did not affect osteoclast sealing zone (SZ) formation but effectively decreased the SZ area by decreasing actin depolymerization. When GMFB was overexpressed in Gmfb-deficient osteoclasts, the size of the SZ area was enlarged in a dose-dependent manner. Moreover, decreased actin depolymerization led to a decrease in nuclear G-actin, which activated MKL1/SRF-dependent gene transcription. We found that pro-osteoclastogenic factors (Mmp9 and Mmp14) were downregulated, while anti-osteoclastogenic factors (Cftr and Fhl2) were upregulated in Gmfb KO osteoclasts. A GMFB inhibitor, DS-30, targeting the binding site of GMFB and Arp2/3, was obtained. Biocore analysis revealed a high affinity between DS-30 and GMFB in a dose-dependent manner. As expected, DS-30 strongly suppressed osteoclast hyperactivity in vivo and in vitro. In conclusion, our work identified a new therapeutic strategy for T1D-OP treatment. The discovery of GMFB inhibitors will contribute to translational research on T1D-OP.
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Zhongzhe Zhang,Yongsheng Ji,Zhanguo Ma,Furong Gao,Mingming Ma,Zhishan Xu 대한토목학회 2022 KSCE Journal of Civil Engineering Vol.26 No.1
In this paper, the rheological parameters of the alkali-activated slag underwater non-dispersible paste (AAS-UNDP) were tested, and the influence of polyacrylamide (PAM) on the rheological property of AAS-UNDP was studied combing with the method of molecular dynamics simulation. The experimental results show that the rheological model of AAS-UNDP and cement basted underwater non-dispersible paste (CB-UNDP) are consistent with the Herschel-Bulkley model. The results of molecular dynamics simulation show that the anions in PAM and the OH- alkali-activated slag cementitious material (AASCM) can produce repulsive force, so the potential energy of the AASCM is lower than the potential energy of the cement based cementitious material (CBCM).The mean square displacement (MSD) value and self-diffusion coefficient of PAM in the AASCM are higher than those of CBCM, indicating that the diffusion rate of particles in the AASCM is better than that of CBCM.
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Zhongzhe Zhang,Yongsheng Ji,Zhanguo Ma,Zhishan Xu,Furong Gao,Qi Xue 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.4
In order to explore the influence of nickel slag powder (Ni) and polypropylene fiber (PP) on the performance of MPKC mortar, different mass fractions of Ni (5% − 20%) and different volume fractions (0.6% and 1.0%) of PP were added to MKPC. The composite modified MKPC (CM-MKPC) specimens were tested and analyzed for flexural strength, compressive strength, split tensile strength, and bending performance. With the help of scanning electron microscope, the microstructure and fracture morphology of the modified MKPC specimens for related research. The results show that the addition of PP and Ni improves the mechanical properties of MKPC and improves its flexibility and deformation properties. When the content of Ni and volume of PP are 15% and 1.0%, respectively, the mechanical properties and bending properties of the modified MKPC mortar are the largest in the same group. Ni added to the MKPC gel system can reduce the friction between irregular magnesium oxide particles and between aggregates. In this way, PP fiber can well enter into the aggregate and play a bridging role at the interface, so that MKPC can better play its mechanical properties.
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Hongyan Nie,Hongxin Liao,Jinrui Wen,Cuiqiong Ling,Liyan Zhang,Furong Xu,Xian Dong The Korean Society of Ginseng 2024 Journal of Ginseng Research Vol.48 No.2
Background: Fusarium oxysporum (F. oxysporum) is the primary pathogenic fungus that causes Panax notoginseng (P. notoginseng) root rot disease. To control the disease, safe and efficient antifungal pesticides must currently be developed. Methods: In this study, we prepared and characterized a nanoemulsion of Foeniculum vulgare essential oil (Ne-FvEO) using ultrasonic technology and evaluated its stability. Traditional Foeniculum vulgare essential oil (T-FvEO) was prepared simultaneously with 1/1000 Tween-80 and 20/1000 dimethyl sulfoxide (DMSO). The effects and inhibitory mechanism of Ne-FvEO and T-FvEO in F. oxysporum were investigated through combined transcriptome and metabolome analyses. Results: Results showed that the minimum inhibitory concentration (MIC) of Ne-FvEO decreased from 3.65 mg/mL to 0.35 mg/mL, and its bioavailability increased by 10-fold. The results of gas chromatography/mass spectrometry (GC/MS) showed that T-FvEO did not contain a high content of estragole compared to Foeniculum vulgare essential oil (FvEO) and Ne-FvEO. Combined metabolome and transcriptome analysis showed that both emulsions inhibited the growth and development of F. oxysporum through the synthesis of the cell wall and cell membrane, energy metabolism, and genetic information of F. oxysporum mycelium. Ne-FvEO also inhibited the expression of 2-oxoglutarate dehydrogenase and isocitrate dehydrogenase and reduced the content of 2-oxoglutarate, which inhibited the germination of spores. Conclusion: Our findings suggest that Ne-FvEO effectively inhibited the growth of F. oxysporum in P. notoginseng in vivo. The findings contribute to our comprehension of the antifungal mechanism of essential oils (EOs) and lay the groundwork for the creation of plant-derived antifungal medicines.
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