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Gene Expression Profiling in the Pituitary Gland of Laying Period and Ceased Period Huoyan Geese
Luan, Xinhong,Cao, Zhongzan,Xu, Wen,Gao, Ming,Wang, Laiyou,Zhang, Shuwei Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.7
Huoyan goose is a Chinese local breed famous for its higher laying performance, but the problems of variety degeneration have emerged recently, especially a decrease in the number of eggs laid. In order to better understand the molecular mechanism that underlies egg laying in Huoyan geese, gene profiles in the pituitary gland of Huoyan geese taken during the laying period and ceased period were investigated using the suppression subtractive hybridization (SSH) method. Total RNA was extracted from pituitary glands of ceased period and laying period geese. The cDNA in the pituitary glands of ceased geese was subtracted from the cDNA in the pituitary glands of laying geese (forward subtraction); the reverse subtraction was also performed. After sequencing and annotation, a total of 30 and 24 up and down-regulated genes were obtained from the forward and reverse SSH libraries, respectively. These genes mostly related to biosynthetic process, cellular nitrogen compound metabolic process, transport, cell differentiation, cellular protein modification process, signal transduction, small molecule metabolic process. Furthermore, eleven genes were selected for further analyses by quantitative real-time PCR (qRT-PCR). The qRT-PCR results for the most part were consistent with the SSH results. Among these genes, Synaptotagmin-1 (SYT1) and Stathmin-2 (STMN2) were substantially over-expressed in laying period compared to ceased period. These results could serve as an important reference for elucidating the molecular mechanism of higher laying performance in Huoyan geese.
Yue Xue,Zhiyuan Zheng,Shuwei Shen,Guangli Liu,Ronald X. Xu 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.2
Electrospun nanofibrous mats (ENM) have been extensively used for removal of suspended particles, cells and bacteria in membrane filtration because of its high porosity and permeability. However, microfiltration process is driven by a certain transmembrane pressure, and the filtration performance of traditional ENM are thereby hindered by its limited mechanical property. In this study, we propose a new strategy that sandwich the ENM between two layers of electrospray-deposited microparticles to enhance the mechanical properties of ENM membrane. Through a suitable thermal treatment, the microparticles stick with each other forming firm networks, while the ENM is rarely influenced. The mechanical tests show that the tensile strength and elastic modulus of the sandwich-structure composite membrane are 5 times and 7 times higher than those of the fibrous membrane, respectively. Meanwhile, the filtration tests show that the rejection rate of the composite membrane is also higher than the fibrous membrane. Our study implies the composite membrane fabricated by layer-by-layer deposition via electrospray and electrospinning has a great potential in microfiltration applications.
Genmeng Yang,Juan Li,Yanxia Peng,Baoyu Shen,Yuanyuan Li,Liu Liu,Chan Wang,Yue Xu,Shucheng Lin,Shuwei Zhang,Yi Tan,Huijie Zhang,Xiaofeng Zeng,Qi Li,Gang Lu 고려인삼학회 2022 Journal of Ginseng Research Vol.46 No.3
This study investigates the effects of ginsenoside Rb1 (GsRb1) on methamphetamine (METH)-induced toxicity in SH-SY5Y neuroblastoma cells and METH-induced conditioned place preference (CPP)in adult Sprague-Dawley rats. It also examines whether GsRb1 can regulate these effects through theNR2B/ERK/CREB/BDNF signaling pathways. Methods: SH-SY5Y cells were pretreated with GsRb1 (20 mM and 40 mM) for 1 h, followed by METHtreatment (2 mM) for 24 h. Rats were treated with METH (2 mg/kg) or saline on alternating days for 10days to allow CPP to be examined. GsRb1 (5, 10, and 20 mg/kg) was injected intraperitoneally 1 h beforeMETH or saline. Western blot was used to examine the protein expression of NR2B, ERK, P-ERK, CREB, PCREB, and BDNF in the SH-SY5Y cells and the rats' hippocampus, nucleus accumbens (NAc), and prefrontal cortex (PFC). Results: METH dose-dependently reduced the viability of SH-SY5Y cells. Pretreatment of cells with 40mM of GsRb1 increased cell viability and reduced the expression of METH-induced NR2B, p-ERK, p-CREBand BDNF. GsRb1 also attenuated the expression of METH CPP in a dose-dependent manner in rats. Further, GsRb1 dose-dependently reduced the expression of METH-induced NR2B, p-ERK, p-CREB, andBDNF in the PFC, hippocampus, and NAc of rats. Conclusion: GsRb1 regulated METH-induced neurotoxicity in vitro and METH-induced CPP through theNR2B/ERK/CREB/BDNF regulatory pathway. GsRb1 could be a therapeutic target for treating METHinduced neurotoxicity or METH addiction.