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Lin Qiu,Peipei Wang,Boyao Zhang,Lang Liu,Xiaoping Wang,Chaoliang Lei,Yongjun Lin,Weihua Ma 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.4
Transgenic rice expressing Bacillus thuringiensis (Bt) Cry1Ac and Cry2Aa toxins have proven resistant to lepidopteran pests in China, including the striped stem borer, Chilo suppressalis. Identifying the molecular mechanisms through which Cry toxins affect insect pests is essential, both for understanding the nature of their toxicity, and for assessing the potential for the development of resistance to such toxins. In this study, both onedimensional gel electrophoresis (1-DE), combined ligand blots and mass spectrometry, were used to identify proteins binding to the Cry1Ac and Cry2Aa toxins in brush border membrane vesicles (BBMVs) of the C. suppressalis larvae midgut. Aminopeptidase-N (APN), alkaline phosphatase (ALP), cadherin-like (CAD), ATP-binding cassette transporter subfamily C1 protein (ABCC1), actin, ATPase, alpha amylase, and heat shock protein cognate (HSPC), were detected in Cry1Ac binding bands, and APN, actin, ATPase and HSPC were identified as Cry2Aa potential binding proteins. The novel potential binding protein, delta-aminolevulinic acid dehydratase, was also detected in both Cry1Ac and Cry2Aa binding bands. This is the first study to comprehensively identify the proteins that bind to Cry1Ac and Cry2Aa toxins in C. suppressalis.
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Yanying Hou,Lujie Liu,Xingxing Zhang,Yuechao Zhu,Yongjun Qiu,Liming Zhao 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-
Ion exchange resins are promising materials for separating chitooligosaccharides (COSs) with differentdegrees of polymerization (DP). The adsorbent functional groups significantly determine the interactionswith COSs and affect their adsorption and separation efficiency. This study investigated the adsorptionbehaviors of COSs on macroporous cation exchange resins with different functional groups to clarifythe functional group effect on the adsorption of COSs with different DP, which can also help to providea theoretical basis for the selection of separation medium and optimization of the separation technicsof COSs. The results showed that the adsorption of COSs on sulfonic-acid type resin DX-10 andcarboxylic-acid type resin DC-10 were favorable, and the adsorption isotherms were in accord withthe Sips model. Adsorption thermodynamics showed that temperature had opposite effects on the tworesins’ equilibrium adsorption capacity of COSs. The diffusion coefficient of COSs on DX-10 resin wasgreater, and the affinity gap between COSs on DX-10 resin was larger than that of DC-10 resin, whichis beneficial for improving the separation resolution of COSs. In contrast, the interaction energy betweenCOSs with high DP and DC-10 resin was weaker compared with DX-10, which made the elution of COSswith high DP easier.
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Li-Jun Zuo,Shu-Yang Yu,Fang Wang,Yanghui Xia,Ying-Shan Piao,Yang Du,Teng-Hong Lian,Rui-Dan Wang,Qiu-Jin Yu,Ya-Jie Wang,Xiao-Min Wang,Piu Chan,Sheng-Di Chen,Yongjun Wang,Wei Zhang 대한신경과학회 2016 Journal of Clinical Neurology Vol.12 No.2
Background and Purpose The aim of this study was to identify the clinical characteristics and potential mechanisms relevant to pathological proteins in Parkinson’s disease (PD) patients who experience fatigue. Methods PD patients (n=102) were evaluated using a fatigue severity scale and scales for motor and nonmotor symptoms. The levels of three pathological proteins—α-synuclein oligomer, β-amyloid (Aβ)1-42, and tau—were measured in 102 cerebrospinal fluid (CSF) samples from these PD patients. Linear regression analyses were performed between fatigue score and the CSF levels of the above-listed pathological proteins in PD patients. Results The frequency of fatigue in the PD patients was 62.75%. The fatigue group had worse motor symptoms and anxiety, depression, and autonomic dysfunction. The CSF level of α-synuclein oligomer was higher and that of Aβ1-42 was lower in the fatigue group than in the non-fatigue group. In multiple linear regression analyses, fatigue severity was significantly and positively correlated with the α-synuclein oligomer level in the CSF of PD patients, after adjusting for confounders. Conclusions PD patients experience a high frequency of fatigue. PD patients with fatigue have worse motor and part nonmotor symptoms. Fatigue in PD patients is associated with an increased α-synuclein oligomer level in the CSF
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