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( Zhong Wen Chen ),( Yin Bing Zhang ),( Xaing Jun Chen ),( Xiao Liu ),( Zhen Wang ),( Xi Kun Zhou ),( Ji Qiu ),( Nan Nan Zhang ),( Xiu Teng ),( Yong Qiu Mao ),( Chang Yong Liu ),( Yu Quan Wei ),( Jion 대한피부과학회 2015 Annals of Dermatology Vol.27 No.2
Background: Psoriasis is an autoimmune disease that is caused by a shift in the Th1/Th2 balance toward Th1- dominant immunity. It has been established as an effective treatment to counteract psoriasis by subcutaneous injection of recombinant interleukin (IL)-4, and IL-4 gene therapy by topical transdermal penetration has shown its antipsoriatic effect in mice. Retinoic acid (RA) and dimethylsulfoxide can increase the efficiency of gene transfection in the topical transdermal delivery system. Objective: We investigated whether RA could improve anti-psoriasis efficiency using IL-4 expression plasmid pORF-mIL-4 (pIL-4) via transdermal delivery system in K14-vascular endothelial growth (K14- VEGF) factor transgenic mice. Methods: After pretreatment with RA, plasmid pIL-4 in 10% dimethylsulfoxide was applied to the ear skin by topical transdermal penetration. Hematoxylin- eosin staining and immunohistochemistry were performed with ear samples to evaluate anti-psoriasis efficiency in mice. Results: The psoriasis pathological features were relieved and psoriasis-associated factors were significantly reduced. Conclusion: Our results reveal that topical application of pIL-4 in dimethylsulfoxide by transdermal delivery with RA pretreatment can improve psoriasis significantly.(Ann Dermatol 27(2) 121∼127, 2015)
( Zhong Wen Chen ),( Yin Bing Zhang ),( Xaing Jun Chen ),( Xiao Liu ),( Zhen Wang ),( Xi Kun Zhou ),( Ji Qiu ),( Nan Nan Zhang ),( Xiu Teng ),( Yong Qiu Mao ),( Chang Yong Liu ),( Yu Quan Wei ),( Jion 대한피부과학회 2015 Annals of Dermatology Vol.27 No.3
Background: Psoriasis is an autoimmune disease that is caused by a shift in the Th1/Th2 balance toward Th1- dominant immunity. It has been established as an effective treatment to counteract psoriasis by subcutaneous injection of recombinant interleukin (IL)-4, and IL-4 gene therapy by topical transdermal penetration has shown its antipsoriatic effect in mice. Retinoic acid (RA) and dimethylsulfoxide can increase the efficiency of gene transfection in the topical transdermal delivery system. Objective: We investigated whether RA could improve anti-psoriasis efficiency using IL-4 expression plasmid pORF-mIL-4 (pIL-4) via transdermal delivery system in K14-vascular endothelial growth (K14- VEGF) factor transgenic mice. Methods: After pretreatment with RA, plasmid pIL-4 in 10% dimethylsulfoxide was applied to the ear skin by topical transdermal penetration. Hematoxylin- eosin staining and immunohistochemistry were performed with ear samples to evaluate anti-psoriasis efficiency in mice. Results: The psoriasis pathological features were relieved and psoriasis-associated factors were significantly reduced. Conclusion: Our results reveal that topical application of pIL-4 in dimethylsulfoxide by transdermal delivery with RA pretreatment can improve psoriasis significantly. (Ann Dermatol 27(2) 121∼127, 2015)
Zhen He,Tingting Dong,Wen Chen,Tielin Wang,Haifeng Gan,LiangJun Li 한국식물병리학회 2020 Plant Pathology Journal Vol.36 No.6
Lotus is one of the most important aquatic vegetables in China. Previously, we detected sweet potato latent virus from lotus (SPLV-lotus) and found that it has highly significant sequence diversity with SPLV-sweet potato isolates (SPLV-sp). Here, we developed serological methods for the detection of SPLV-lotus in Chinese lotus cultivation areas. Based on the high sensitivity of SPLV-lotus coat protein antiserum, rapid, sensitive and large-scale diagnosis methods of enzyme-linked immunosorbent assay (ELISA) and dot blot in lotus planting area were developed. The established ELISA and dot blot diagnostic methods can be used to detect SPLVlotus from samples successfully. And our results also showed that the SPLV-lotus and sweet potato isolates appeared clearly distinction in serology. Our study provides a high-throughput, sensitive, and rapid diagnostic method based on serology that can detect SPLV on lotus, which is suggested to be included in viral disease management approach due to its good detection level.
Micrococcus endophyticus sp. nov., isolated from surface-sterilized Aquilaria sinensis roots.
Chen, Hua-Hong,Zhao, Guo-Zhen,Park, Dong-Jin,Zhang, Yu-Qin,Xu, Li-Hua,Lee, Jae-Chan,Kim, Chang-Jin,Li, Wen-Jun Society for General Microbiology 2009 International journal of systematic and evolutiona Vol.59 No.5
<P>A Gram-positive bacterial strain, designated YIM 56238(T), was isolated from plant roots (Aquilaria sinensis), and characterized by using a polyphasic approach. Strain YIM 56238(T) grew optimally at pH 7.0-8.0 and at 28 degrees C. Analysis of the 16S rRNA gene sequence of strain YIM 56238(T) indicated that it belongs to the genus Micrococcus. Chemotaxonomic data strongly supported the classification of this strain within the genus Micrococcus: the cell-wall peptidoglycan contained lysine, glutamic acid, alanine and glycine; the predominant menaquinones were MK-8(H(2)) (63.6 %) and MK-7(H(2)) (21.1 %); the phospholipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unknown ninhydrin-negative phospholipid; and the major cellular fatty acids were iso-C(15 : 0) (30.95 %) and anteiso-C(15 : 0) (53.75 %). The G+C content of the genomic DNA was 72.9 mol%. A number of physiological features were found that clearly distinguished strain YIM 56238(T) from recognized species of the genus Micrococcus. DNA-DNA hybridization studies suggested that the novel strain represents a separate genomic species. On the basis of the data, therefore, strain YIM 56238(T) represents a novel species of the genus Micrococcus, for which the name Micrococcus endophyticus sp. nov. is proposed. The type strain is YIM 56238(T) (=DSM 17945(T)=KCTC 19156(T)).</P>
$L^{\infty}$-CONVERGENCE OF MIXED FINITE ELEMENT METHOD FOR LAPLACIAN OPERATOR
Chen, Huan-Zhen,Jiang, Zi-Wen 한국전산응용수학회 2000 Journal of applied mathematics & informatics Vol.7 No.1
In this paper two so-called regularized Green's functions are introduced to derive the optimal maximum norm error estimates for the unknown function and the adjoint vector-valued function for mixed finite element methods of Laplacian operator. One contribution of the paper is a demonstration of how the boundedness of $L^1$-norm estimate for the second Green's function ${\lambda}_2$ and the optimal maximum norm error estimate for the adjoint vector-valued function are proved. These results are seemed to be to be new in the literature of the mixed finite element methods.
Zero-Correlation Linear Cryptanalysis of Reduced Round ARIA with Partial-sum and FFT
( Wen-tan Yi ),( Shao-zhen Chen ),( Kuan-yang Wei ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.1
Block cipher ARIA was first proposed by some South Korean experts in 2003, and later, it was established as a Korean Standard block cipher algorithm by Korean Agency for Technology and Standards. In this paper, we focus on the security evaluation of ARIA block cipher against the recent zero-correlation linear cryptanalysis. In addition, Partial-sum technique and FFT (Fast Fourier Transform) technique are used to speed up the cryptanalysis, respectively. We first introduce some 4-round linear approximations of ARIA with zero-correlation, and then present some key-recovery attacks on 6/7-round ARIA-128/256 with the Partial-sum technique and FFT technique. The key-recovery attack with Partial-sum technique on 6-round ARIA-128 needs 2<sup>123.6</sup> known plaintexts (KPs), 2<sup>121</sup>encryptions and 2<sup>90.3</sup> bytes memory, and the attack with FFT technique requires 2<sup>124.1</sup>KPs, 2<sup>121.5</sup> encryptions and 2<sup>90.3</sup> bytes memory. Moreover, applying Partial-sum technique, we can attack 7-round ARIA-256 with 2<sup>124.6</sup>KPs, 2<sup>203.5</sup> encryptions and 2<sup>152</sup> bytes memory and 7-round ARIA-256 employing FFT technique, requires 2<sup>124.7</sup>KPs, 2<sup>209.5</sup> encryptions and 2<sup>152</sup> bytes memory . Our results are the first zero-correlation linear cryptanalysis results on ARIA.
Zhen He,Tingting Dong,Weiwen Wu,Wen Chen,Xian Liu,Liangjun Li 한국식물병리학회 2019 Plant Pathology Journal Vol.35 No.5
Odontoglossum ringspot virus (ORSV) is a member of the genus Tobamovirus. It is one of the most prevalent viruses infecting orchids worldwide. Earlier studies reported the genetic variability of ORSV isolates from Korea and China. However, the evolutionary rate, timescale, and phylogeographical analyses of ORSV were unclear. Twenty-one coat protein (CP) gene sequences of ORSV were determined in this study, and used them together with 145 CP sequences obtained from GenBank to infer the genetic diversities, evolutionary rate, timescale and migration of ORSV populations. Evolutionary rate of ORSV populations was 1.25 × 10−3 nucleotides/site/y. The most recent common ancestors came from 30 year ago (95% confidence intervals, 26- 40). Based on CP gene, ORSV migrated from mainland China and South Korea to Taiwan island, Germany, Australia, Singapore, and Indonesia, and it also circulated within east Asia. Our study is the first attempt to evaluate the evolutionary rates, timescales and migration dynamics of ORSV.