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Zhao Xiao-mei,Lian Yu-ji,Jin Ze-lin,Zhang Xue-jie,Y Yan,Fan Shou-jin 한국식물생명공학회 2022 Plant biotechnology reports Vol.16 No.4
Leaf material explants of Pulsatilla tongkangensis Y. N. Lee & T. C. Lee were used to regenerate plants of this endangered species by somatic embryogenesis and organogenesis from meristematic nodules, induced by MS medium supplemented with zeatin (Zn) and indole-3-acetic acid (IAA). Globular structures were induced on the surface of the explants after 2 weeks and after 6–7 weeks of culture, multiple shoots developed from the nodules. Morpho-histological analysis of light green globular, heart-shaped structures resembling somatic embryos revealed, however, that these were organogenic, with strongly vacuolated parenchymatous cells surrounded by a single layer of epithermal cells, and tracheid elements, but no root pole. Milky-white callus also developed around the nodules after 4–6 weeks. Morpho-histological analysis of the globular, heart-, and torpedo-shaped stages of regenerants present in this callus confirmed the development of somatic embryos in the milky-white structures, characterized by deeply staining, small cells with rich cytoplasm, very little vascular tissue in the developing embryos, and no vascular connection with the surrounding callus. The highest rooting frequency (93.33%) was achieved on MS medium containing 1.5 mg/l NAA. Plantlets were acclimatized and successfully transferred to pots. Our results provide a plant regeneration system with potential for germplasm conservation of endangered plants and the rapid propagation and molecular breeding of P. tongkangensis.
( L. Wei ),( F. Wang ),( M. Zhang ),( J. Jia ),( A.A. Yakovlev ),( W. Xie ),( E.Z. Burnevich ),( J. Niu ),( Y.J. Jung ),( X. Jiang ),( M. Xu ),( X. Chen ),( Q. Xie ),( J. Li ),( J. Hou ),( H. Tang ),( 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Background/Aims: Treatment-naive GT 1b-infected patients from mainland China, South Korea and Russia were assessed for SVR at follow-up week 12 (SVR12) after receiving daclatasvir (60 mg, QD) and asunaprevir (100 mg, BID) (DCV+ASV). Methods: Patients were randomized 3:1 to receive DCV+ASV (24 weeks; immediate treatment [IM]) or 12 weeks of placebo followed by DCV+ASV (24 weeks; placebo-deferred treatment [PD]). The primary endpoint was to evaluate SVR12 in the IM arm to the historical rate for peginterferon/ribavirin (70%). Secondary endpoints included overall safety and safety comparisons between the treatment arms during the first 12 weeks. Results: 207 patients were randomized to IM (n=155) or PD (n=52); Asian (86%), female (59%), IL28B CC genotype (68%) and median age 49 (range 18-73) years; cirrhosis (13%), HCV RNA ≥6x106 IU/mL (53%). SVR12 in the IM arm was 92% and broadly unaffected by most baseline factors assessed (Figure); SVR12 was higher in patients without (96%) baseline NS5A-L31M/V or Y93H polymorphisms. There were 6 virologic breakthroughs, 6 relapses and 1 detectable HCV RNA at end-of-treatment in the IM arm. Safety was mostly comparable between the two arms during the first 12 weeks. The most frequent adverse events (AEs; ≥5%) during DCV+ASV (24 weeks) treatment in both arms were aminotransferase, bilirubin and INR elevations, hypertension, fatigue and respiratory tract infections; the most frequent treatment-emergent grade 3/4 laboratory abnormalities were aminotransferase (≤4.5%) and hematologic, lipase and total bilirubin abnormalities (≤2%); one patient (IM) discontinued DCV+ASV for aminotransferase elevations, nausea and jaundice (all reversible); one patient PD) discontinued DCV+ASV for a fatal AE unrelated to treatment. Conclusions: These data demonstrate that DCV+ASV is a highly efficacious and well tolerated treatment for treatment-naive HCV GT 1b-infected patients. Those treated immediately with DCV+ASV achieved a 92% SVR12 rate which was unaffected by factors known to attenuate response to interferon.
Jeon, S.J.,Kim, B.,Park, H.J.,Zhang, J.,Kwon, Y.,Kim, D.H.,Ryu, J.H. Elsevier/North-Holland Biomedical Press 2017 Behavioural brain research Vol.324 No.-
In the present study, we investigated whether 1-palmitoyl-2-linoleoyl-3-acetylglycerol (PLAG), a component of antlers of Cervus nippon Temminck, would have memory-ameliorating properties against cholinergic blockade-induced memory impairment in mice. In the passive avoidance task to investigate the effects of PLAG on long-term memory, PLAG (10mg/kg, p.o.) administration ameliorated scopolamine-induced memory impairment. PLAG also reversed the impairments of working memory in the Y-maze task and spatial memory as shown in the Morris water maze. To identify the mechanism of the memory-ameliorating effect of PLAG, acetylcholinesterase (AChE) inhibition assay and the Western blot analysis were conducted. In the AChE inhibition assay, PLAG inhibited the AChE activity in mice and PLAG increased the expression levels of phosphorylated CaMKII, ERK, and CREB in the hippocampus. Additionally, long-term potentiation (LTP) of synaptic strength occurred by PLAG treatment in the hippocampal cultures. Overall, the present study suggests that PLAG reversed memory deficits in an animal model and that it affects biochemical pathways related to learning and memory.
Zhang, Y.,Park, M.,Kim, H.Y.,Ding, B.,Park, S.J. New York] ; North-Holland 2016 APPLIED SURFACE SCIENCE - Vol.384 No.-
In this work, BiOCl<SUB>x</SUB>/BiOBr<SUB>y</SUB>/BiOI<SUB>z</SUB> (x+y+z=1) composite nanofibers were prepared through electrospinning and the sol-gel methods. Photocatalytic degradation of trichloroethylene (TCE) by BiOCl<SUB>x</SUB>/BiOBr<SUB>y</SUB>/BiOI<SUB>z</SUB>/PAN nanofibers was systematically investigated via gas chromatography (GC). Optimum photocatalytic activity was achieved with BiOCl<SUB>0.3</SUB>/BiOBr<SUB>0.3</SUB>/BiOI<SUB>0.4</SUB> fibers under solar light irradiation. X-ray photoelectron spectroscopy (XPS) peaks due to C?O and C?O were observed at 286.0 and 288.3eV, respectively, it indicated that the BiOCl<SUB>x</SUB>/BiOBr<SUB>y</SUB>/BiOI<SUB>z</SUB> mixture had been successfully doped on the polyacrylonitrile (PAN) fibers. Furthermore, X-ray diffraction (XRD) results also confirmed that we had synthesized the as-prepared composite nanofibers successfully. Photocatalytic activities of BiOCl<SUB>0.3</SUB>/BiOBr<SUB>0.3</SUB>/BiOI<SUB>0.4</SUB> were up to 3 times higher than the pure BiOCl, BiOBr and BiOI samples, respectively.
Ling, Y.H.,Zhang, X.D.,Yao, N.,Ding, J.P.,Chen, H.Q.,Zhang, Z.J.,Zhang, Y.H.,Ren, C.H.,Ma, Y.H.,Zhang, X.R. Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.2
To investigate the genetic diversity of seven Chinese indigenous meat goat breeds (Tibet goat, Guizhou white goat, Shannan white goat, Yichang white goat, Matou goat, Changjiangsanjiaozhou white goat and Anhui white goat), explain their genetic relationship and assess their integrity and degree of admixture, 302 individuals from these breeds and 42 Boer goats introduced from Africa as reference samples were genotyped for 11 microsatellite markers. Results indicated that the genetic diversity of Chinese indigenous meat goats was rich. The mean heterozygosity and the mean allelic richness (AR) for the 8 goat breeds varied from 0.697 to 0.738 and 6.21 to 7.35, respectively. Structure analysis showed that Tibet goat breed was genetically distinct and was the first to separate and the other Chinese goats were then divided into two sub-clusters: Shannan white goat and Yichang white goat in one cluster; and Guizhou white goat, Matou goat, Changjiangsanjiaozhou white goat and Anhui white goat in the other cluster. This grouping pattern was further supported by clustering analysis and Principal component analysis. These results may provide a scientific basis for the characteristization, conservation and utilization of Chinese meat goats.