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Metformin alleviates LTA-induced inflammatory response through PPARγ/MAPK/NF-κB signaling pathway in bovine mammary epithelial cells

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BIOCELL 2022年第11期46卷 2443-2454页

作者： ABDELAZIZ adam idrisS ARBAB CHUNQING YIN XUBIN LU YAN LIANG ISMAIL MOHAMED ABDALLA amer adam idris TIANLE XU YONGJIANG MAO ZHANGPING YANG College of Animal Science and Technology Yangzhou UniversityYangzhou225009China Joint International Research Laboratory of Agriculture and Agri-Product Safety ofMinistry of Education of China Yangzhou UniversityYangzhou225009China Biomedical Research Institute Darfur CollegeNyala63313Sudan Shandong Haiding husbandry Co. Ltd.Jinan250100China

Mastitis is a common inflammatory cow mammary infection;that causes significant economic loss in dairy *** the interesting connection between metformin’s anti-inflammatory function and mastitis model induced by LTA in pbMECs,our objective was to prove that metformin was beneficial in suppressing proinflammatory response induced by LTA through modulation of mitogen-activated protein kinase(MAPK)and nuclear factor kappa B(NF-κB)signaling pathways and activation of peroxisome proliferator-activated receptor-γ(PPARγ)in *** proliferation of cells and mRNA expression were measured using EdU assay and quantitative reverse transcriptase-polymerase chain reaction(qRT-PCR).Immunoblotting and immunofluorescence analysis were conducted to evaluate the expression of target proteins in inflammatory and anti-inflammatory responses to metformin and ***,pbMECs were allowed to treat with the PPAR antagonist GW9662,and inflammatory markers were detected in the *** results showed that LTA concentration at 100μg/mL significantly stimulated the MAPK14,IL-6 and IL-1βmRNA expressions compared to the control cells(P<0.05)in dose-dependent tests for *** suppressed the phosphorylation expressions of MAPK(ERK1/2,p38,and JNK)in LTA-stimulated *** also reduced the protein expression of NF-κB,interleukin-8(IL-8),interleukin-1β(IL-1β)and interleukin-6(IL-6)in pbMECs pretreated with *** administration activated PPARγphosphorylation by up-regulating the expression of PPARγin LTA-stimulated *** with GW9662 resulted in increased IL-6 expression,which was reversed by *** findings collectively indicated that metformin act to attenuate LTA-stimulated inflammatory response in pbMECs by suppressing MAPK and NF-κB activation via a mechanism partially dependent on PPARγ*** results suggested that metformin could function as an anti-inflammatory drug in the treatment of mastitis.

关键词： Metformin LTA Primary bovine mammary epithelial cell Anti-inflammatory effect PPARγ Nuclear factor-κB Mitogen-activated protein kinase

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Synthesis of zeolite-magadiite composites＂ Effects of co-solvent and aluminum source

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Particuology 2016年第4期14卷 34-39页

作者： idris A. Bakare Oki Muraza Saheed A. Ganiyu Abbas S. Hakeem Zain H. Yamani Adnan M.J. Al-amer Center of Excellence in Nanotechnology King Fahd University of Petroleum and Minerals PO Box 5040 Dhahran 31261 Saudi Arabia Chemical Engineering Department King Fahd University of Petroleum and Minerals PO Box 5040 Dhahran 21261 Saudi Arabia Chemistry Department King Fahd University of Petroleum and Minerals PO Box 5040 Dhahran 31261 Saudi Arabia

The one-pot synthesis of ZSM-5-magadiite, ZSM-23-magadiite, and ZSM-5-ZSM-23-magadiite using isopropylamine and 2-propanol as an organic structure-directing agent and co-solvent, respectively, was studied. Zeolite mixtures were prepared by adding 2-propanol （0 to 10wt%） to the reaction solu- tion. The intergrowth of composites was observed when 2-propanol was introduced as a co-solvent into the reaction mixture. Synthesized samples were characterized by X-ray diffraction, field-emission scan- ning electron microscopy, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis. The results revealed that the amount of 2-propanol and source of aluminum influenced the nature of the zeolite-magadiite composites formed.

关键词： lntergrowth Magadiite ZSM-23 ZSM-5 Composite

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