http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Min Shi ),( Ya Feng Chen ),( Fang Huang ),( Xue Ping Zhou ),( Xue Xin Chen ) 생화학분자생물학회 2008 BMB Reports Vol.41 No.8
Cotesia vestalis is an endoparasitoid of Plutella xylostella larvae and injects a polydnavirus (CvBV) into its host during oviposition. In this report we characterize the gene, CvBV3307, and its products. CvBV3307 is located on segment S33 of the CvBV genome, is 517 bp, and encodes a putative protein of 122 amino acids, including a serine-rich region. The expression pattern of CvBV3307 in parasitized larvae and the subcellular localization of CvBV3307 only in granulocytes indicated that it might be involved in early protection of parasitoid eggs from host cellular encapsulation and in manipulating the hormone titer and developmental rhythm of host larvae. Western blot analysis showed that the size of the immunoreactive protein (about 55 kDa) in parasitized hosts at 48 hours post parasitization (h p.p.) is much larger than the predicted molecular weight of 13.6 kDa, which suggests that CvBV3307 undergoes extensive post-translational modification in hosts.
Chen Xue-Min,Wang Xiao-Yun,Lu Wen,Zheng Xia-Lin 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2
An entomopathogenic fungal strain, Beauveria bassiana PfBb, was identified from Phauda flammans (Lepidoptera: Phaudidae) larvae. The compatibility and synergy of B. bassiana PfBb employed in combination with three concentrations (i.e., recommended concentration, 20% and 10% of the recommended concentration) of five commercial insecticides were determined. Beta cypermethrin at 10% of recommended concentration had the lowest inhibitory effect on the mycelial growth of B. bassiana PfBb compared with other insecticides. Insecticides utilized at recommended concentration had no significant effect on the sporulation of B. bassiana PfBb, while the extent of their effect at 20% and 10% of recommended concentration differed among insecticides. Insecticides at 10% of recommended concentration had the lowest inhibition of sporulation and conidial germination compared with other concentrations. The conidial germination of B. bassiana PfBb was the highest after treatment with beta cypermethrin at 10% of recommended concentration. The cumulative mortality for 1 × 10 7 spores/mL B. bassiana PfBb combined with each insecticide at 10% of recommended concentration was higher than that observed with the application of insecticides alone. The percent cadavers of Phauda flammans larvae observed after treatment with B. bassiana PfBb combined with beta cypermethrin at 10% of recommended concentration were not significantly different from those observed after infection with B. bassiana PfBb alone. Our findings demonstrate that B. bassiana PfBb combined with beta cypermethrin at 10% of recommended concentration could increase the efficiency of this insecticide.
Current understanding of the development of sex attractant-based biocontrol in burnet moths
Chen Xue-Min,Wang Xiao-Yun,Lu Wen,Zheng Xia-Lin 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.3
Burnet moths, also known as the family Zygaenidae, are a typical diurnal family of Lepidoptera. Some species are important insect pests in agriculture and forestry. The use of sex attractants is one of the most important mea sures in the integrated pest management of burnet moths because these attractants are highly efficient, do not cause pollution, and are convenient and harmless to natural enemies. The earliest information about sex pher omones in Zygaenidae was reported in 1972. To date, many studies have described sex pheromones and at tractants of species in Zygaenidae. Here, we review a total of 22 sex attractant compositions identified for 57 species of Zygaenidae and compare the differences in the structures of sex attractants among these species. The application of sex attractants in seasonal monitoring showed that the main activity period of zygaenid moths is from May to September each year. However, there are few reports on the effects of sex attractants on mass trapping of members of the family Zygaenidae. The ratio and degradation of sex attractants and the trap color, shape and hanging height were considered the main factors influencing capture effectiveness. Directions for further study of burnet moths are also discussed.
Expression and Prognostic Role of MEKK3 and pERK in Patients with Renal Clear Cell Carcinoma
Chen, Qi,Lu, Hong-sheng,Gan, Mei-fu,Chen, Lan-xi,He, Kai,Fan, Guang-min,Cao, Xue-quan Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.6
Mitogen-activated protein kinase/extracellular signal-regulated kinase kinase kinase 3 (MEKK3) is an important serine/threonine protein kinase and a member of the MAPK family. MEKK3 can effectively activate the MEK/ERK signaling pathway and promote an autocrine growth loop critical for tumor genesis, cell proliferation, terminal differentiation, apoptosis and survival. To explore the relationship between MEKK3 and cell apoptosis, clinicopathology and prognosis, we characterize the expression of MEKK3, pERK and FoxP3 in the renal clear cell carcinoma (RCCC). Protein expression was detected by tissue microarray and immunochemistry in 46 cases of RCCC and 28 control cases. Expression levels of CD3+,CD3+CD4+,CD3+CD8+,CD4+CD25+, CD4+CD25+ FoxP3+ were assessed by flow cytometry and analyzed for their association with pathological factors, correlation and prognosis in RCCC. Expression of MEKK3, pERK and FoxP3 was significantly up-regulated in RCCC as compared to control levels (p<0.01), associated with pathological grade (p<0.05)and clinical stage (p<0.05). CD4+CD25+ Foxp3+ Treg cells were also significantly increased in RCCC patients (p<0.05). Cox multivariate regression analysis showed that MEKK3, pERK expression and patholigical stage were independent prognostic factors in patients with RCCC (p<0.05). MEKK3 can be used as an important marker of early diagnosis and prognostic evaluation in RCCC. It may be associated with imbalance of anti-tumor immunity and overexpression of pERK. Expression of MEKK3 and pERK are significantly increased in RCCC, with protein expression and clinical stage acting as independent prognostic factors.
Classifications, synthesis and applications of biodegradable pseudo-proteins: a review
Yunjiao Xue,Yang Liu,Xuan Zhang,Min Sun,Yuhuan Chen,Fang Yang 한국고분자학회 2024 Macromolecular Research Vol.32 No.2
Pseudo-protein is a novel synthetic biodegradeable material that has amino acids as the basic structural unit. Unlike protein, this polymer has other linking groups in addition to peptide bonds in their structure, which provide not only the excellent properties of protein, but also good mechanical properties, thermal properties, adjustable physicochemical properties, excellent cytocompatibility, 3D microporous structure, etc. Therefore, pseudo-proteins can be effectively applied in carriers, wound healing, tissue engineering, etc. This review summarizes the recent advances in the development of pseudo-proteins, the main classifications and the synthetic methods used in their preparation along with their main applications.
Could Tumor Size Be A Predictor for Papillary Thyroid Microcarcinoma: a Retrospective Cohort Study
Wang, Min,Wu, Wei-Dong,Chen, Gui-Ming,Chou, Sheng-Long,Dai, Xue-Ming,Xu, Jun-Ming,Peng, Zhi-Hai Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.18
Background: Central lymph node metastasis(CLNM) is common in papillary thyroid microcarcinoma (PTMC). The aim of this study was to define the pathohistologic risk grading based on surgical outcomes. Materials and Methods: Statistical analysis was performed to figure out the optimal cut-off values of size in preoperative ultrasound images for defining the risk of CLNM in papillary thyroid microcarcinoma. Receiver operating characteristic curves (ROC) studies were carried out to determine the cutoff value(s) for the predictor(s). All the patients were divided into two groups according to the above size and the clinic-pathological and immunohistochemical parameters were compared to determine the significance of findings. Results: The optimal cut-off value of tumor size to predict the risk of CLNM in papillary thyroid microcarcinoma was 0.575 cm (area under the curve 0.721) according to the ROC curves. Significant differences were observed on the multifocality, extrathyroidal extension and central lymph node metastasis between two groups which were divided according to the tumor size by the cutoff values. Patients in two groups showed different positive rate and intensity of Ki67. Conclusions: The size of PTMC in ultrasound images are helpful to predict the aggressiveness of the tumors, it could be an easy predictor for PTMC prognosis and assist us to choose treatment.
Mechanochemistry synthesis of high purity lithium carbonate
Ning Chen,E Zhou,Dong-ping Duan,Xue-min Yang 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.10
A technique for preparing high purity Li2CO3 powders has been developed through mechanochemical process coupled with the dissolution-filtration process. The first step as mechanochemical reaction of both Na2CO3 and LiCl mixtures was designed to obtain the primary Li2CO3 powders using a ball mill. The second step as the dissolution- filtration process was performed to obtain high purity Li2CO3 powders. Experimental results indicate that the three parameters of milling time, rotation speed, and ball-to-sample mass ratio can closely relate with purity of primary Li2CO3 powders. The XRD patterns of primary Li2CO3 powders indicate that mechanochemical reaction of both Na2CO3 and LiCl can be completed in 15 min under optimal conditions at rotation speed as 600 rpm, ball-to-sample mass ratio as 5/1, and molar ratio of Na2CO3 to LiCl as 1/2. The target products of Li2CO3 powders contain impurity of Na+ less than 0.1mass% with the minimum values as 0.073mass%. Two shapes of massive particles and smaller grains less than 1 μm in nano scale can be observed in the target products of Li2CO3 powders.