检索结果-南通市图书馆

Changes in choroidal thickness in healthy pediatric individuals: a longitudinal study

International Journal of Ophthalmology(English edition) 2018年第7期11卷 1179-1184页

作者： Eiko Ohsugi Yoshinori Mitamura kayo shinomiya Masanori Niki Hiroki Sano Toshihiko Nagasawa Yukiko Shimizu Daisuke Nagasato Hitoshi Tabuchi Department of Ophthalmology Saneikai Tsukazaki Hospital Department of Ophthalmology Institute of Biomedical Sciences Tokushima University Graduate School

AIM： To investigate the changes in the choroidal thickness in healthy pediatric children in a longitudinal study, and to determine the ocular and systemic parameters that were significantly correlated with the changes in the choroidal thickness. METHODS： This study included 64 eyes of 34 healthy Japanese children with a mean age（±SD） of 4.4（±0.4）y（range, 3.6-5.8 y） at baseline. Swept-source optical coherence tomography（SS-OCT） was used to record images of the retina and choroid at the baseline and after a mean followup period of about 1.5 y. The 3 D raster scan protocol was used to construct the choroidal thickness map. Mean choroidal thickness was calculated for each of the nine sectors of the Early Treatment Diabetic Retinopathy Study grid. Best-corrected visual acuity, axial length, body height, and weight were also measured. Changes in measurements were defined as the baseline values subtracted from the values at the final visit. A generalized estimating equation was used to eliminate the effect of within-subject intereye correlations. RESULTS： The mean central choroidal thickness was significantly reduced during the follow-up period（baseline, 301.8±8.6 μm; final visit, 286.6±8.0 μm, P〈0.001）. The decrease in the choroidal thickness was greatest in the central sector, followed by the sectors of the inner and outer rings. The inner and outer rings had diameters of 1 to 3 mm and 3 to 6 mm, respectively. The changes in the choroidal thickness in the central, inner ring, and outer ring sectors were significantly and negatively correlated with the age, baseline body height, baseline body weight, and elongation of the axial length. CONCLUSION： These results indicate that the choroidal thickness among preschool-aged Japanese children decreased significantly during the follow-up period. The choroidal thinning is significantly associated with the elongation of axial length. These characteristics should be considered in the evaluation of choroidal thickness in younger chi

关键词： choroidal thickness longitudinal study pediatrics swept-source optical coherence tomography

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Relating brain structure images to personality characteristics using 3D convolution neural network

引用

CAAI Transactions on Intelligence Technology 2021年第3期6卷 338-346页

作者： Lixian Cao Yanchun Liang Wei Lv Kaechang Park Yasuhiro Miura Yuki shinomiya Shinichi Yoshida Zhuhai Laboratory of Key Laboratory of Symbol Computation and Knowledge Engineering of Ministry of Education Zhuhai College of Jilin UniversityZhuhaiChina Key Laboratory of Symbol Computation and Knowledge Engineering of Ministry of Education College of Computer Science and TechnologyJilin UniversityChangchunChina School of Information&Research Institute Kochi University of TechnologyKochiJapan

The Keras deep learning framework is employed to study MRI brain data in a preliminary analysis of brain structure using a convolutional neural *** results obtained are matched with the content of personality *** Big Five personality traits provide easy differentiation for dividing personalities into different *** now,the highest accuracy obtained from the results of personality prediction from the analysis of brain structure is about 70%.Although there is still no effective evidence to prove a clear relationship between brain structure and personality,the obtained results could prove helpful in understanding the basic relationship between brain structure and personality characteristics.

关键词： convolution structure dividing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

低压细胞灌注多孔人工骨的成骨能力：与常压灌注的比较

引用

中国组织工程研究与临床康复 2008年第49期12卷 9601-9605页

作者：王居勇沈惠良麻生义则张庆明刘利民四宫谦一首都医科大学宣武医院骨科北京市100053 东京医科齿科大学医学部骨科日本

背景:尽管利用低压脱泡细胞灌注法在多孔生物材料携带成骨细胞的体外研究取得令人满意的进展,然而是否能够提高动物体内工程组织骨的成骨能力还需要进一步探讨。目的:采用低压方法在β-磷酸三钙材料内种植骨髓间充质干细胞,观察其复合... 详细信息

背景:尽管利用低压脱泡细胞灌注法在多孔生物材料携带成骨细胞的体外研究取得令人满意的进展,然而是否能够提高动物体内工程组织骨的成骨能力还需要进一步探讨。目的:采用低压方法在β-磷酸三钙材料内种植骨髓间充质干细胞,观察其复合体移植到大鼠体内后的成骨能力并与常压灌注法比较。设计、时间及地点:组织学观察和生化学分析,对比实验。于 2005-01/2006-02 在东京医科齿科大学医学部骨科实验室完成。材料:5 mm×5 mm×5 mm 多孔生物材料磷酸三钙;实验动物为 7 周雄性 Fischer-344 大鼠 8 只,4 只大鼠用于生化分析,另 4 只大鼠用于组织学分析。方法:在体外培养扩增骨髓间充质细胞后,将细胞置于成骨分化的培养液中,通过常压(101.1 kPa)和低压(13.3 kPa)2 种方法将细胞灌注入多孔生物材料磷酸三钙人工骨中。同时将 Fischer-344 背部两侧各取 2 个切口,低压种植的骨髓间充质干细胞/β-磷酸三钙移植到右侧皮下,常压种植的骨髓间充质干细胞/β-磷酸三钙移植到左侧皮下。主要观察指标:通过扫描电镜观察组织工程骨内细胞种植情况;组织学观察和计算机图像分析移植 3 周和 6 周后体内组织工程骨成骨情况;检测组织工程骨碱性磷酸酶活性。结果:扫描电镜观察低压细胞种植法灌注的多孔人工骨内存在更多的细胞;在移植后的第 3,6 周,低压组中碱性磷酸酶活性高于常压组,经过组织学观察和计算机图像分析处理,低压组比常压组有更均匀和更广泛的成骨量。结论:低压细胞灌注提高骨生成能力明显优于常压灌注方法。

关键词：磷酸三钙低压骨髓间充质干细胞骨形成

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

功能性消化不良女性患者的主观症状与血浆酰基化Ghrelin水平相关

引用

世界核心医学期刊文摘（胃肠病学分册） 2005年第10期1卷 58-58页

作者： shinomiya T. Fukunaga M. Akamizu T. 武敏 Translational Research Center Kyoto University School of Medicine 54 Shogoin Kawaharacho Sakyo-ku Kyoto 606-8507 Japan Dr.

Objective. Ghrelin is a brain-gut peptide that is mainly secreted from gastric endocrine cells (X/A like cells). In addition to promoting growth-hormone release and appetite, ghrelin also affects gastric motility and secretion. Circulating ghrelin levels are related to appetite and energy balance. Functional dyspepsia (FD) is a disorder characterized by the presence of chronic or recurrent symptoms of upper abdominal pain or discomfort. Although no known specific organic abnormalities are present in FD, abnormalities in gastrointestinal motility and sensitivity are thought to play a role in a substantial subgroup of patients. In addition, some patients also suffer from anorexia and body-weight loss. To investigate the role of ghrelin in the pathophysiology of FD, circulating ghrelin levels in affected patients were measured. Material and methods. Eighteen Japanese female patients with functional dyspepsia and 18 healthy volunteers were recruited for the study. Acylated and desacyl forms of ghrelin were measured using commercially available enzyme-linked immunosorbent assay kits. Results. Although plasma levels of acylated or desacyl ghrelin were not significantly different between healthy subjects and FDpatients, plasma acylated, but not desacyl ghrelin, levels were correlated with a subjective symptom score in FD patients. In addition, the ratio of acylated to desacyl ghrelin (A/D ratio) was correlated strongly with acylated, but not desacyl, ghrelin levels. Conclusions. The correlation of circulating acylated ghrelin levels with the subjective symptom score and the A/D ratio in FD patients suggest that acylated ghrelin may play a role in the pathophysiology of FD.

关键词： Ghrelin 酰基化胃动力病理生理学胃肠动力脑肠肽内分泌细胞腹部疼痛能量平衡显著性差别

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

低压细胞灌注法提高多孔人工骨成骨能力的体外研究

引用

中国组织工程研究与临床康复 2007年第31期11卷 6130-6134页

作者：王居勇张怀华沈慧良麻生义则陈佳妮张庆明李旗王居强雍宜民四宮谦一首都医科大学宣武医院骨科北京市100053 中国华北电力集团公司北京电力医院骨科北京市100073 东京医科齿科大学医学部骨科中国医科大学第一临床学院骨科辽宁省沈阳市110001

目的:多孔生物材料中心部所存在的气泡有可能限制了细胞和培养液进入中心部,从而限制了材料内细胞的进一步增殖和分化,继而影响移植后的体内骨形成。实验设计使用低压方法排除多孔材料生物材料β-TCP内的气泡,检测细胞/β-TCP复合体的... 详细信息

目的:多孔生物材料中心部所存在的气泡有可能限制了细胞和培养液进入中心部,从而限制了材料内细胞的进一步增殖和分化,继而影响移植后的体内骨形成。实验设计使用低压方法排除多孔材料生物材料β-TCP内的气泡,检测细胞/β-TCP复合体的成骨能力,以验证其可行性。方法:实验于2003-04/2005-06在东京医科齿科大学医学部骨科实验室完成。在体外培养扩增骨髓间充质细胞后,将细胞置于成骨分化的培养液中,通过常压(大气压,101.1kPa)和低压(13.3kPa)两种方法将细胞灌注种植入72个多孔β-TCP人工骨中。细胞种植后检测β-TCP人工骨内含有的细胞悬浊液量,细胞生存率和细胞种植效率;应用扫描电镜观察细胞种植后人工骨内细胞附着情况。并在继续细胞分化培养1,2,3,4周时检测人工骨的DNA含量和碱性磷酸酶活性。结果:①低压组人工骨的细胞悬浊液量、全细胞种植效率和活细胞种植效率均高于常压组(P0.05)。②扫描电镜观察显示低压组人工骨内附着更多的骨髓间充质细胞。③低压组细胞分化培养过程中不同时点的人工骨碱性磷酸酶活性和DNA含量均高于常压组(P<0.01)。结论:13.3kPa低压细胞灌注法可以明显提高多孔人工骨的细胞种植和成骨能力。低压细胞种植法是一个既简单方便又实用有效的方法。

关键词：低压骨髓基质细胞骨形成磷酸三钙

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：