ZNF533、DOCK4和IMMP2L基因多态性与中国东北汉族孤独症的关联研究(英文)     

Shuang LIANG  Xue-lai WANG  Ming-yang ZOU  Han WANG  Xue ZHOU  Cai-hong SUN  Wei XIA  Li-jie WU  Takashi X. FUJISAWA  Akemi TOMODA 《Journal of Zhejiang University. Science. B》2014,(3)

研究目的:ZNF533、DOCK4和IMMP2L在大脑发育过程中起到非常重要的作用,是孤独症研究的候选基因。高加索人群的研究结果发现,ZNF533、DOCK4和IMMP2L基因的5个单核苷酸多态性(SNP)位点与孤独症高度相关。为了探讨上述位点是否与中国孤独症发生相关,我们开展了东北汉族孤独症的核心家系研究。创新要点:孤独症候选基因多态位点的研究结果通常很难得到重复。本研究首次在中国东北汉族人群中验证了与高加索人群孤独症密切相关的候选位点。这一结果对孤独症的研究具有重要指导意义。研究方法:利用SNaPshot的方法,检测了中国东北汉族370个核心家系中ZNF533(rs11885327、rs1964081)、DOCK4(rs2217262)和IMMP2L(rs12537269、rs1528039)的分布情况,利用传递不平衡检验(TDT)分析了这些多态位点与孤独症发生的相关性。重要结论:ZNF533和DOCK4基因多态性与中国北方汉族孤独症发生存在显著关联。  相似文献   

Family-based association study of ZNF533, DOCK4 and IMMP2L gene polymorphisms linked to autism in a northeastern Chinese Han population简     

Shuang LIANG  Xue-lai WANG  Ming-yang ZOU  Han WANG  Xue ZHOU  Cai-hong SUN  Wei XIA  Li-jie WU  Takashi X. FUJISAWA  Akemi TOMODA 《Journal of Zhejiang University. Science. B》2014,15(3):264-271

Objective

A study in a Caucasian population has identified two single-nucleotide polymorphisms (SNPs) in ZNF533, one in DOCK4, and two in IMMP2L, which were all significantly associated with autism. They are located in AUTS1 and AUTS5, which have been identified as autism susceptibility loci in several genome-wide screens. The present study aimed to investigate whether ZNF533, DOCK4, and IMMP2L genes are also associated with autism in a northeastern Chinese Han population.

Methods

We performed a similar association study using families with three individuals (one autistic child and two unaffected parents). A family-based transmission disequilibrium test (TDT) was used to analyze the results.

Results

There were significant associations between autism and the two SNPs of ZNF533 gene (rs11885327: χ ²=4.5200, P=0.0335; rs1964081: χ ²=4.2610, P=0.0390) and the SNP of DOCK4 gene (rs2217262: χ ²=5.3430, P=0.0208).

Conclusions

Our data suggest that ZNF533 and DOCK4 genes are linked to a predisposition to autism in the northeastern Chinese Han population.  相似文献   

A formal treatment of document information systems     

Takashi Maeda 《Information processing & management》1981,17(6):319-328

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An automatic method for extracting significant phrases in scientific or technical documents     

Takashi Maeda  Yoshio Momouchi  Hajime Sawamura 《Information processing & management》1980,16(3):119-127

A new method is described to extract significant phrases in the title and the abstract of scientific or technical documents. The method is based upon a text structure analysis and uses a relatively small dictionary. The dictionary has been constructed based on the knowledge about concepts in the field of science or technology and some lexical knowledge, for significant phrases and their component items may be used in different meanings among the fields. A text analysis approach has been applied to select significant phrases as substantial and semantic information carriers of the contents of the abstract.The results of the experiment for five sets of documents have shown that the significant phrases are effectively extracted in all cases, and the number of them for every document and the processing time is fairly satisfactory. The information representation of the document, partly using the method, is discussed with relation to the construction of the document information retrieval system.  相似文献   

How Japan makes use of international educational survey research     

Ryo Watanabe 《Prospects》1992,22(4):455-462

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Electrical conductivity of melts: implications for conductivity anomalies in the Earth's mantle     

Bao-Hua Zhang  Xuan Guo  Takashi Yoshino  Qun-Ke Xia 《国家科学评论(英文版)》2021,8(11)

Magmatic liquids, including silicate and carbonate melts, are principal agents of mass and heat transfer in the Earth and terrestrial planets, and they play a crucial role in various geodynamic processes and in Earth''s evolution. Electrical conductivity data of these melts elucidate the cause of electrical anomalies in Earth''s interior and shed light on the melt structure. With the improvement in high-pressure experimental techniques and theoretical simulations, major progress has been made on this front in the past several decades. This review aims to summarize recent advances in experimental and theoretical studies on the electrical conductivity of silicate and carbonate melts of different compositions and volatile contents under high temperature and pressure. The electrical conductivity of silicate melts depends strongly on temperature, pressure, water content and the ratio of non-bridging oxygens to tetrahedral cations (NBO/T). By contrast, the electrical conductivity of carbonate melts exhibits a weak dependence on temperature and pressure due to their fully depolymerized structure. The electrical conductivity of carbonate melts is higher than that of silicate melts by at least two orders of magnitude. Water can increase electrical conductivity significantly and reduce the activation energy of silicate melts. Conversely, this effect is weak for carbonate melts. In addition, the replacement of alkali-earth elements (Ca²⁺ or Mg²⁺) with alkali elements causes a significant decrease in the electrical conductivity of carbonate melts. A distinct compensation trend is revealed for the electrical conductivity of silicate and carbonate melts under anhydrous and hydrous conditions. Several important applications of laboratory-based melt conductivity are introduced in order to understand the origin of high-conductivity anomalies in the Earth''s mantle. Perspectives for future studies are also provided.  相似文献   

Roles of attention in perceptual learning from perspectives of psychophysics and animal learning     

Yoshiaki Tsushima  Takeo Watanabe 《Learning & behavior》2009,37(2):126-132

The role of attention in perceptual learning has been a topic of controversy. Sensory psychophysicists/physiologists and animal learning psychologists have conducted numerous studies to examine this role; but because these two types of researchers use two very different lines of approach, their findings have never been effectively integrated. In the present article, we review studies from both lines and use exposure-based learning experiments to discuss the role of attention in perceptual learning. In addition, we propose a model in which exposure-based learning occurs only when a task-irrelevant feature is weak. We hope that this article will provide new insight into the role of attention in perceptual learning to the benefit of both sensory psychophysicists/physiologists and animal learning psychologists.  相似文献   

Differences in hamstring activation characteristics between the acceleration and maximum-speed phases of sprinting     

Ayako Higashihara  Yasuharu Nagano  Takashi Ono  Toru Fukubayashi 《Journal of sports sciences》2018,36(12):1313-1318

This study aimed to investigate activation characteristics of the biceps femoris long head (BFlh) and semitendinosus (ST) muscles during the acceleration and maximum-speed phases of sprinting. Lower-extremity kinematics and electromyographic (EMG) activities of the BFlh and ST muscles were examined during the acceleration sprint and maximum-speed sprint in 13 male sprinters during an overground sprinting. Differences in hamstring activation during each divided phases and in the hip and knee joint angles and torques at each time point of the sprinting gait cycle were determined between two sprints. During the early stance of the acceleration sprint, the hip extension torque was significantly greater than during the maximum-speed sprint, and the relative EMG activation of the BFlh muscle was significantly higher than that of the ST muscle. During the late stance and terminal mid-swing of maximum-speed sprint, the knee was more extended and a higher knee flexion moment was observed compared to the acceleration sprint, and the ST muscle showed higher activation than that of the BFlh. These results indicate that the functional demands of the medial and lateral hamstring muscles differ between two different sprint performances.  相似文献   

Response of brain-derived neurotrophic factor to combining cognitive and physical exercise     

Toshiaki Miyamoto  Saya Hashimoto  Hideya Yanamoto  Mai Ikawa  Yoshiki Nakano  Takashi Sekiyama 《European Journal of Sport Science》2018,18(8):1119-1127

Purpose: Brain-derived neurotrophic factor (BDNF) is well known for its potential to promote brain plasticity. It has been proposed that combining cognitive and physical exercise (CCPE) may have the potential to generate more synergistic benefits in cognitive function than either cognitive exercise (CE) or physical exercise (PE) alone. The purpose of this study was to examine acute responses of peripheral BDNF levels and cognitive performance to CE, PE, and CCPE.

Methods: Thirteen healthy adult men participated in four experimental sessions; a 30-min CE, a 30-min cycling PE at an intensity of 60% peak oxygen uptake, a 30-min CCPE at the same intensity as PE, and a 30-min session of complete rest. Plasma BDNF levels and cognitive performance were measured before and after each session.

Results: Both PE and CCPE significantly increased plasma BDNF levels (p?p?≥?.05), and there was no significant difference in peripheral BDNF levels between PE and CCPE (p?≥?.05). No session induced a significant change in cognitive performance (p?≥?.05).

Conclusions: Our study suggests that CE and PE have different responses of peripheral BDNF levels and that CCPE had no additional or synergistic effect on peripheral BDNF levels compared with PE alone. This study offers further insights into the potential mechanisms underlying the respective roles of CE, PE, and CCPE for peripheral BDNF levels and cognitive performance.  相似文献   

Effects of drop sets with resistance training on increases in muscle CSA,strength, and endurance: a pilot study     

Hayao Ozaki  Atsushi Kubota  Toshiharu Natsume  Jeremy P. Loenneke  Takashi Abe  Shuichi Machida 《Journal of sports sciences》2018,36(6):691-696

To investigate the effects of a single high-load (80% of one repetition maximum [1RM]) set with additional drop sets descending to a low-load (30% 1RM) without recovery intervals on muscle strength, endurance, and size in untrained young men. Nine untrained young men performed dumbbell curls to concentric failure 2–3 days per week for 8 weeks. Each arm was randomly assigned to one of the following three conditions: 3 sets of high-load (HL, 80% 1RM) resistance exercise, 3 sets of low-load [LL, 30% 1RM] resistance exercise, and a single high-load (SDS) set with additional drop sets descending to a low-load. The mean training time per session, including recovery intervals, was lowest in the SDS condition. Elbow flexor muscle cross-sectional area (CSA) increased similarly in all three conditions. Maximum isometric and 1RM strength of the elbow flexors increased from pre to post only in the HL and SDS conditions. Muscular endurance measured by maximum repetitions at 30% 1RM increased only in the LL and SDS conditions. A SDS resistance training program can simultaneously increase muscle CSA, strength, and endurance in untrained young men, even with lower training time compared to typical resistance exercise protocols using only high- or low-loads.  相似文献