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Lin, Guang-Xun,Quillo-Olvera, Javier,Jo, Hyun-Jin,Lee, Hyeong-Jin,Covarrubias-Rosas, Claudia Angelica,Jin, Chengzhen,Kim, Jin-Sung Elsevier 2017 World neurosurgery Vol.106 No.-
<P><B>Objective</B></P> <P>To compare the outcomes between patients older and younger than 65 years who underwent single-level minimally invasive transforaminal interbody fusion (MI-TLIF) surgery.</P> <P><B>Methods</B></P> <P>This study is a retrospective analysis of 76 patients who underwent MI-TLIF between April 2012 and June 2016. Group A consisted of 35 patients (<65 years) and group B consisted of 41 patients (≥65 years). Intraoperative data were recorded. The evaluation of clinical outcomes was based on the visual analog scale for back and leg pain and the Oswestry Disability Index. Radiologic outcomes including cage subsidence, end plate cyst formation, and fusion rate were assessed.</P> <P><B>Results</B></P> <P>The mean age of the study subjects was 65.3 years, and the mean duration of follow-up was 18.98 months. Group B had a higher rate of comorbidities compared with group A (90.24% vs. 57.14%, respectively; <I>P</I> < 0.05). There was no statistically significant difference in the rate of complications between the groups (group A, 14.29%; group B, 17.07%). Clinical outcomes significantly improved in both groups postoperatively (<I>P</I> < 0.05). Although bony fusion in group A was slightly higher than that in group B, the fusion rate was not statistically different according to age. There were no statistically significant differences in the rates of cage subsidence or positive cyst sign between the groups.</P> <P><B>Conclusions</B></P> <P>MI-TLIF presented similar safeness and acceptable outcomes and complication rate in both groups. Cyst formation may be aggravated by cage subsidence, because cage subsidence was a useful potential predictor of cyst formation.</P>
Chromatin, microtubule and microfilament configurations in the canine oocyte
Jin, Yong-Xun,Lee, Hyo-Sang,Yin, Xi-Jun,Cui, Xiang-Shun,Kong, Il-Keun,Kim, Nam-Hyung CSIRO Publishing 2006 Reproduction, fertility, and development Vol.18 No.8
<P>In the present study, we observed chromatin, microtubule and microfilament distribution in canine oocytes. The germinal vesicle (GV) chromatin of canine oocytes was classified into four configurations (GV-I, -II, -III and -IV) based on the degree of chromatin separation and condensation. Oocytes recovered from follicular phase ovaries had a greater amount (68%, P < 0.05) of GV-III or GV-IV chromatin than did those from non-follicular phase ovaries (35%). The majority (86.7%) of in vivo ovulated oocytes were at GV-IV. The rates of development to GV breakdown/metaphase I/metaphase II were higher in oocytes recovered from follicular ovaries than from non-follicular ovaries. Immunostaining results revealed cytoplasmic microtubules present in all GV-stage oocytes. Following GV breakdown, microtubular asters were produced from condensed chromatin. The asters appeared to be elongated, and encompassed condensed chromatin particles to form meiotic metaphase chromatin. Microfilaments were located in the cortex and around the GV. During meiotic maturation, a microfilament-rich area, in which the chromatin is allocated, was observed in the oocyte. Our results indicate that oocytes recovered from follicular ovaries were in an advanced stage of GV, and were more competent to complete maturation compared to those from non-follicular phase ovaries. Both microtubules and microfilaments are closely associated with reconstruction of chromatin during meiotic maturation in canine oocytes.</P>
Jin, Xun,Lee, Joong-Seub,Kwak, Sungwook,Jung, Ji-Eun,Kim, Tae-Kyung,Xu, Chenxiong,Hong, Zhongshan,Li, Zhehu,Kim, Sun-Myoung,Whang, Kwang Youn,Hong, Ki-Chang,You, Seungkwon,Choi, Yun-Jaie,Kim, Hyunggee Korean Society for Molecular Biology 2006 Molecules and cells Vol.21 No.2
<P>We have established in culture a spontaneously immortalized bovine embryonic fibroblast (BEF) cell line that has lost p53 and p16(INK4a) functions. MyoD is a muscle-specific regulator capable of inducing myogenesis in a number of cell types. When the BEF cells were transduced with MyoD they differentiated efficiently to desmin-positive myofibers in the presence of 2% horse serum and 1.7 nM insulin. The myogenic differentiation of this cell line was more rapid and obvious than that of C2C12 cells, as judged by morphological changes and expression of various muscle regulatory factors. To confirm that lack of the p53 and p16(INK4a) pathway does not prevent MyoD-mediated myogenesis, we established a cell line transformed with SV40LT (BEFV) and introduced MyoD into it. In the presence of 2% horse serum and 1.7 nM insulin, the MyoD-transduced BEFV cells differentiated like the MyoD-transduced BEFS cells, and displayed a similar pattern of expression of muscle regulatory proteins. Taken together, our results indicate that MyoD overexpression overcomes the defect in muscle differentiation associated with immortalization and cell transformation caused by the loss of p53 and Rb functions.</P>
Jin, Ye,Zhou, Li,Liang, Zhi-Yong,Jin, Ke-Min,Zhou, Wei-Xun,Xing, Bao-Cai Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9
Background: Many factors, including molecular ones, were demonstrated to be associated with long-term prognosis of hepatocellular carcinoma (HCC). Thus far, the expression and clinicopathologic and prognostic significance of the carboxyl terminus of Hsp70-interacting protein (CHIP) in B-type hepatitis virus (HBV)-related HCC remain unknown. Materials and Methods: CHIP expression was detected by immunohistochemical staining of surgical samples from 79 patients with HCC with HBsAg positivity. In addition, correlations with clinicopathologic parameters and patient survival were evaluated. Results: It was found that positive CHIP staining was observed in tumor, but not non-tumor, tissues. High expression of CHIP was significantly related to larger tumor size, with marginally significant associations noted for presence of portal vein invasion and higher serum a-fetoprotein level. In addition, univariate analysis showed that high CHIP expression was a powerful predictor for dismal overall and disease-free survival. However, independent prognostic implications of CHIP were not proven in multivariate Cox regression test. Conclusions: CHIP is overexpressed in HBV-related HCC and is associated with unfavorable biological behavior as well as poor prognosis. However, its prognostic role needs to be further validated.
Cat fertilization by mouse sperm injection
Jin, Yong-Xun,Cui, Xiang-Shun,Yu, Xian-Feng,Lee, Sung-Hyun,Wang, Qing-Ling,Gao, Wei-Wei,Xu, Yong-Nan,Sun, Shao-Chen,Kong, IL-Keun,Kim, Nam-Hyung Cambridge University Press 2012 Zygote Vol.20 No.4
<B>Summary</B><P>Interspecies intracytoplasmic sperm injection has been carried out to understand species-specific differences in oocyte environments and sperm components during fertilization. While sperm aster organization during cat fertilization requires a paternally derived centriole, mouse and hamster fertilization occur within the maternal centrosomal components. To address the questions of where sperm aster assembly occurs and whether complete fertilization is achieved in cat oocytes by interspecies sperm, we studied the fertilization processes of cat oocytes following the injection of cat, mouse, or hamster sperm. Male and female pronuclear formations were not different in the cat oocytes at 6 h following cat, mouse or hamster sperm injection. Microtubule asters were seen in all oocytes following intracytoplasmic injection of cat, mouse or hamster sperm. Immunocytochemical staining with a histone H3-m2K9 antibody revealed that mouse sperm chromatin is incorporated normally with cat egg chromatin, and that the cat eggs fertilized with mouse sperm enter metaphase and become normal 2-cell stage embryos. These results suggest that sperm aster formation is maternally dependent, and that fertilization processes and cleavage occur in a non-species specific manner in cat oocytes.</P>
Optimized Identification Method for Digital Music Pieces in BitTorrent
Xun Jin,Jongweon Kim 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.1
In this paper, we propose a methodology for identification of MP3 audio pieces downloaded by BitTorrent client program using cross-correlation of 12 chroma features extracted from audio signal. To prevent illegal distribution of copyrighted audio files from spreading over the internet, the file pieces split by torrent file must be detected as accurately as possible. In order to improve the probability of successfully identifying the audio pieces, we use Peak In Piece Position (PIPP) method which means the maximum peak appeared in a range corresponding to piece position and length is selected to reduce the probability of misidentification. The experimental results show probabilities of successfully identification of the pieces with different piece properties, comparisons between the proposed algorithms and conventional algorithm in terms of precisions and robustness of the proposed algorithms.
Audio Fragment Identification System
Xun Jin,Jongweon Kim 보안공학연구지원센터 2014 International Journal of Multimedia and Ubiquitous Vol.9 No.12
Audio identification technologies are becoming of increasing interest for copyright protection and digital forensic. In this paper, we propose an audio fragment identification system for efficient audio identifying applications in practice. To identify an audio file fragment, we have to decode it according to its format. Thus, we precede format classification of audio fragment using Support Vector Machine in advance. After identify the format, fragment recovery is implemented by adding a maximum similar frame header in front of the fragment. Then we extract a chroma feature from the decoded audio data to achieve audio identification. The experimental results show the evaluations of the format classification, fragment recovery and audio identification.