• 【局限性前列腺癌的自然病程。以个人观点审阅已发表的论文。】 复制标题 收藏 收藏
    DOI: 复制DOI
    作者列表:Hugosson J,Aus G
    BACKGROUND & AIMS: :The course of untreated localized prostate cancer after 10 years of follow-up is at large unknown. As curative treatment is usually only offered patients with a life expectancy exceeding 10 Years, the expected course of the disease if left untreated is of the utmost interest. This paper aims to describe the outcome for patients who survive for more than 10 years when treated without curative intent. The results indicate that cancer specific mortality in patients with localized prostate cancer increases steadily over time and is approximately 50% after 15 years. This is a much higher figure than in reported series on radical prostatectomy. Even if many deaths occur at an old age, prostate cancer death is shown to be associated with a significant morbidity, need for palliative treatment, hospital care and cost. Preventing prostate cancer death is therefore not only a matter of saving year of life but also to prevent suffering caused by the disease. Modern diagnostic tools, such as prostate specific antigen, seem to detect clinically significant cancers in the vast majority of patients. Over diagnosis seems to be uncommon if diagnostic procedures are restricted to patients with a long life expectancy. Localized prostate cancer is a slow-growing but progressive neoplastic disease. When diagnosed in a man with a longer life expectancy it should be handled as such.
    背景与目标: :十年随访后未经治疗的局限性前列腺癌的病程目前还不得而知。由于通常仅为预期寿命超过10年的患者提供治愈性治疗,因此,如果不及时治疗,预期的病程将是最重要的。本文旨在描述未经治疗而存活超过10年的患者的预后。结果表明,局部前列腺癌患者的癌症特异性死亡率随时间稳定增加,并且在15年后约为50%。这是一个比已报道的前列腺癌根治术系列高得多的数字。即使许多死亡发生在老年,前列腺癌的死亡也被证明与明显的发病率,姑息治疗的需要,医院护理和费用有关。因此,预防前列腺癌的死亡不仅是挽救生命的一年,而且是预防由该疾病引起的痛苦的问题。现代诊断工具,例如前列腺特异性抗原,似乎可以在绝大多数患者中检测出具有临床意义的癌症。如果诊断程序仅限于预期寿命较长的患者,则过度诊断似乎不常见。局限性前列腺癌是一种生长缓慢但正在进行的肿瘤性疾病。当诊断为预期寿命较长的男性时,应照此处理。
  • 【流域可持续水质管理框架和战略规划系统。】 复制标题 收藏 收藏
    DOI:10.1007/s00267-005-0304-1 复制DOI
    作者列表:Chen CH,Liu WL,Leu HG
    BACKGROUND & AIMS: :In Taiwan, the authorities have spent years working on remedying polluted rivers. Generally, the remediation planning works are divided into two phases. During the first phase, the allowed pollution discharge quantity and abatement quantity of each drainage zone, including the assimilative capacity, are generated based on the total river basin. In the second phase, the abatement action plans for each pollution source in each drainage zone are respectively devised by the related organizations based on the strategies generated during the first phase. However, the effectiveness of linking the two phases is usually poor. Highly integrated performances are not always achieved because the separate two-phase method does not take system and management thinking into consideration in the planning stage. This study pioneers the use of the Managing for Results (MFR) method in planning strategies and action plans for river water quality management. A sustainable management framework is proposed based on the concept and method of MFR, Management Thinking, and System Analysis. The framework, consisting of planning, implementation, and controlling stages, systematically considers the relationships and interactions among four factors: environment, society, economy, and institution, based on the principles of sustainable development. Based on the framework, the Modified Bounded Implicit Enumeration algorithm, which is used as a solving method, is combined with Visual Basic software and MS Excel to develop a computer system for strategy planning. The Shetzu River, located in northern Taiwan, is applied as a case study. According to the theoretical, practical, and regulatory considerations, the result-oriented objectives are defined to first improve the pollution length of the Shetzu River in specific remediation periods to finally meet regulated water quality standards. The objectives are then addressed as some of the constraints for the strategy planning model. The model objective is to pursue the maximum assimilative capacity (environmental phase) subjected to the constraints of water quality standards (institutional phase), social equity (social phase), and proper available technology (economic phase). The pollution quantity abatement and allocation, which are named the top strategies, of each drainage zone for different scenarios can be obtained based on each water quality standard. The middle as well as lower strategies and action plans, which consist of pollution quantity abatement and allocation of each class (domestic, industrial, livestock, and non-point pollution sources) and their individual pollution sources in each drainage zone, are then generated based on the top strategies. The performance indicators and measure plans are proposed based on the action plans to promote the comprehensive effectiveness of river water quality management. The authorities have begun to develop a budget based on the strategies and action plans developed in this study. The analytical results indicate that the objectives, strategies, and action plans developed based on the sustainable management framework and strategy planning system can effectively help the related authorities to fulfill the tasks of water quality management for a river basin.
    背景与目标: :在台湾,当局花费了多年的时间来修复受污染的河流。通常,修复计划工作分为两个阶段。在第一阶段,基于流域总面积,产生每个流域的允许污染排放量和减排量,包括同化能力。在第二阶段,相关组织根据第一阶段产生的策略分别制定每个流域每个污染源的减排行动计划。但是,连接两个阶段的有效性通常很差。由于分离的两阶段方法在计划阶段没有考虑系统和管理思想,因此无法始终实现高度集成的性能。这项研究开创了在河流水质管理的规划策略和行动计划中使用“结果管理”(MFR)方法的方法。基于MFR,管理思想和系统分析的概念和方法,提出了一种可持续的管理框架。该框架由规划,实施和控制阶段组成,根据可持续发展的原则,系统地考虑了四个因素之间的关系和相互作用:环境,社会,经济和制度。在该框架的基础上,将改进的有界隐式枚举算法(作为一种求解方法)与Visual Basic软件和MS Excel相结合,以开发用于战略规划的计算机系统。以台湾北部的神社河为例。根据理论,实践和监管方面的考虑,确定了以结果为导向的目标,即首先在特定的修复时期内改善Shetzu河的污染长度,以最终达到规定的水质标准。然后,将目标作为战略计划模型的一些约束条件加以解决。该模型的目标是在水质标准(机构阶段),社会公平(社会阶段)和适当的可用技术(经济阶段)的约束下,追求最大同化能力(环境阶段)。可以根据每个水质标准获得不同情景下每个流域的污染量减免和分配,这是最重要的策略。然后根据每个流域产生的中低等策略和行动计划,包括减少污染量和分配每个类别(家庭,工业,牲畜和非点源污染源)及其各自的污染源。在最重要的策略上。根据行动计划提出绩效指标和措施计划,以提高河流水质管理的综合有效性。当局已开始根据本研究制定的策略和行动计划制定预算。分析结果表明,基于可持续管理框架和战略计划系统制定的目标,战略和行动计划可以有效地帮助有关部门完成流域水质管理的任务。
  • 【小鼠第6号染色体上自然杀手基因复合物的2-Mb YAC重叠群和物理图谱。】 复制标题 收藏 收藏
    DOI:10.1006/geno.1997.4721 复制DOI
    作者列表:Brown MG,Fulmek S,Matsumoto K,Cho R,Lyons PA,Levy ER,Scalzo AA,Yokoyama WM
    BACKGROUND & AIMS: :We have constructed a physical map of a > 2-Mb region on mouse chromosome 6 that contains the natural killer gene complex (NKC). The map comprises a contig of 14 overlapping yeast artificial chromosomes onto which we positioned 25 NKC markers. NKC genetically linked genes encode > 17 proteins that directly control innate NK cell-mediated tumor lysis and disease resistance. Herein we show that Nkrp1 genes are clustered in a region flanked by A2m and Cd69 genes and that most Ly49 genes are clustered in a distal region -1 Mb distant. Importantly, syntenic intervals of mouse chromosome 6 and human chromosome 12p that include the NKC are conserved. NKC species conservation suggests that the human NKC may contain orthologues for the mouse viral disease resistance genes, Cmv1 and Rmp1. The high-resolution NKC map will facilitate investigation of NKC gene regulation and identification of phenotypically defined gene products that confer NK cell defense against viral pathogens.
    背景与目标: :我们在小鼠染色体6上构建了一个大于2-Mb区域的物理图,其中包含自然杀伤基因复合体(NKC)。该图包括14个重叠的酵母人工染色体的重叠群,我们在其上定位了25个NKC标记。 NKC遗传连锁基因编码> 17种蛋白质,这些蛋白质直接控制先天NK细胞介导的肿瘤溶解和疾病抵抗力。在本文中,我们显示Nkrp1基因聚集在A2m和Cd69基因侧翼的区域中,而大多数Ly49基因聚集在距离-1 Mb远的区域中。重要的是,保留了包含NKC的小鼠6号染色体和人类12p号染色体的同音间隔。 NKC物种保守性表明,人NKC可能含有小鼠病毒疾病抗性基因Cmv1和Rmp1的直向同源物。高分辨率的NKC图谱将有助于NKC基因调控的研究和表型定义的基因产物的鉴定,这些产物赋予NK细胞防御病毒病原体的能力。
  • 【CD5 B细胞在个体发育早期对D-近端VH家族表达的贡献。】 复制标题 收藏 收藏
    DOI: 复制DOI
    作者列表:Jeong HD,Teale JM
    BACKGROUND & AIMS: :In this study, the contribution of the CD5+ B cell to the preferential expression of VH 7183 and Q52 observed early in development was determined. CD5+ and CD5- B cells from BALB/c mice were isolated by fluorescence-activated cell sorter and the expression of particular VH gene families was determined directly by in situ hybridization. The results indicate that CD5+ B cells obtained from both adult and neonatal animals express Q52 at increased levels compared with CD5- B cells. Preferential expression of VH 7183 was observed only in the neonatal CD5- B cell subset. Thus, the increased expression of VH 7183 early in development is caused by the CD5- subset whereas increased Q52 expression is caused by the CD5+ subset. These results indicate that the fetal/neonatal conventional B cell is distinct from conventional adult B cells in terms of Ig gene repertoire expression.
    背景与目标: :在这项研究中,确定了CD5 B细胞对发育早期观察到的VH 7183和Q52优先表达的贡献。通过荧光激活细胞分选仪分离来自BALB / c小鼠的CD5和CD5-B细胞,并通过原位杂交直接确定特定VH基因家族的表达。结果表明,与CD5-B细胞相比,从成年和新生动物身上获得的CD5 B细胞表达的Q52含量都增加了。仅在新生儿CD5-B细胞亚群中观察到VH 7183的优先表达。因此,VH 7183在发育早期的表达增加是由CD5-亚群引起的,而Q52表达的增加是由CD5亚群引起的。这些结果表明,就Ig基因全集表达而言,胎儿/新生儿常规B细胞与常规成人B细胞是不同的。
  • 【经医师营养专家培训后的家庭医师营养实践。】 复制标题 收藏 收藏
    DOI:10.1093/ajcn/65.6.2007S 复制DOI
    作者列表:Lazarus K
    BACKGROUND & AIMS: Although nutrition is an important part of medical care, nutrition education is not provided in most training programs for physicians in the United States, resulting in limited nutrition knowledge among physicians and limited nutritional care of patients. A nutrition education program was provided by a physician nutrition specialist in a family practice residency program. For 6 mo, the nutrition specialist provided the family physicians with recommendations for nutritional care for their patients. The effects of the education program on residents' and faculty physicians' nutrition knowledge and nutritional patient care, patients' perceptions of the importance of nutrition, and physicians' dietary patterns were determined by pre- and post-intervention nutrition exams for physicians and patients, patient questionnaires about attitudes toward nutrition, chart reviews, and physicians' diet records. The nutrition education program resulted in an increase in physicians' nutrition knowledge scores (P < 0.01) and an increase in the frequency with which physicians discussed nutrition and recommended diets for their patients (P < 0.05). This suggests that nutrition education by a physician nutrition specialist within a family practice residency program can be effective in increasing nutritional care provided to patients.

    背景与目标: 尽管营养是医疗保健的重要组成部分,但在美国大多数医师的培训计划中并未提供营养教育,这导致医师之间的营养知识有限,患者的营养保健也有限。营养保健教育计划是由医师营养专家在家庭执业驻留计划中提供的。营养专家在6个月内为家庭医生提供了有关为其患者提供营养护理​​的建议。通过干预前和干预后对医师和患者的营养检查来确定教育计划对住院医师和教职医师的营养知识和患者营养的影响,患者对营养重要性的看法以及医师的饮食方式的影响,有关营养态度的患者问卷调查表,图表评论以及医生的饮食记录。营养教育计划导致医师的营养知识得分增加(P <0.01),医师讨论营养和为患者推荐饮食的频率增加(P <0.05)。这表明在家庭执业住院医师计划中,由医生营养专家进行的营养教育可以有效地增加提供给患者的营养保健服务。

  • 【XLerk的鉴定,XLerk是非洲爪蟾中胚层诱导和神经发生过程中受调节的Eph家族配体。】 复制标题 收藏 收藏
    DOI:10.1038/sj.onc.1201082 复制DOI
    作者列表:Jones TL,Karavanova I,Chong L,Zhou RP,Daar IO
    BACKGROUND & AIMS: We have isolated and characterized the first Xenopus transmembrane Eph ligand, XLerk (Xenopus Ligand for Eph Receptor Tyrosine Kinases). While this ligand has 72% identity with the closest mammalian family member, Lerk-2, it is the cytoplasmic domain of this molecule that is the most conserved domain with 95% identity. XLerk exists as a maternally expressed mRNA, however, expression of transcripts and protein increase during gastrulation and again in the late swimming tadpole stage. In the adult, XLerk is expressed at low levels in most adult tissues with increased levels observed in the kidney, oocytes, ovary and testis. While low levels of XLerk expression are observed in the adult brain, in situ hybridization analysis demonstrates prominent expression in the developing olfactory system, retina, hindbrain, cranial ganglia, and somites. Furthermore, we have shown that XLerk transcripts are significantly elevated during mesoderm induction caused by activin and FGF, but not during noggin-induced neuralization. These results suggest a role for XLerk in the developing mesenchymal and nervous tissue.

    背景与目标: 我们已经分离并鉴定了第一个非洲爪蟾跨膜Eph配体XLerk(用于Eph受体酪氨酸激酶的非洲爪蟾配体)。尽管该配体与最接近的哺乳动物家族成员Lerk-2具有72%的同一性,但该分子的胞质结构域是具有95%的同一性的最保守的结构域。 XLerk作为母体表达的mRNA存在,但是转录的表达和蛋白质在胃排泄过程中以及游泳increase后期再次增加。在成年人中,XLerk在大多数成年人组织中低水平表达,在肾脏,卵母细胞,卵巢和睾丸中观察到水平升高。尽管在成年大脑中观察到了低水平的XLerk表达,但原位杂交分析显示出在发育中的嗅觉系统,视网膜,后脑,颅神经节和体节中突出表达。此外,我们已经表明,在由激活素和FGF引起的中胚层诱导过程中,XLerk转录物显着升高,但在头蛋白诱导的神经化过程中却没有。这些结果表明XLerk在发育中的间充质和神经组织中的作用。

  • 【参与胚胎干细胞生物学的Rhox簇的鼠特异性扩增处于自然选择之下。】 复制标题 收藏 收藏
    DOI:10.1186/1471-2164-7-212 复制DOI
    作者列表:Jackson M,Watt AJ,Gautier P,Gilchrist D,Driehaus J,Graham GJ,Keebler J,Prugnolle F,Awadalla P,Forrester LM
    BACKGROUND & AIMS: BACKGROUND:The rodent specific reproductive homeobox (Rhox) gene cluster on the X chromosome has been reported to contain twelve homeobox-containing genes, Rhox1-12. RESULTS:We have identified a 40 kb genomic region within the Rhox cluster that is duplicated eight times in tandem resulting in the presence of eight paralogues of Rhox2 and Rhox3 and seven paralogues of Rhox4. Transcripts have been identified for the majority of these paralogues and all but three are predicted to produce full-length proteins with functional potential. We predict that there are a total of thirty-two Rhox genes at this genomic location, making it the most gene-rich homoeobox cluster identified in any species. From the 95% sequence similarity between the eight duplicated genomic regions and the synonymous substitution rate of the Rhox2, 3 and 4 paralogues we predict that the duplications occurred after divergence of mouse and rat and represent the youngest homoeobox cluster identified to date. Molecular evolutionary analysis reveals that this cluster is an actively evolving region with Rhox2 and 4 paralogues under diversifying selection and Rhox3 evolving neutrally. The biological importance of this duplication is emphasised by the identification of an important role for Rhox2 and Rhox4 in regulating the initial stages of embryonic stem (ES) cell differentiation. CONCLUSION:The gene rich Rhox cluster provides the mouse with significant biological novelty that we predict could provide a substrate for speciation. Moreover, this unique cluster may explain species differences in ES cell derivation and maintenance between mouse, rat and human.
    背景与目标: 背景:据报道,X染色体上的啮齿动物特异性生殖同源盒(Rhox)基因簇含有十二个包含同源盒的基因,Rhox1-12。
    结果:我们在Rhox簇中鉴定出一个40 kb的基因组区域,该区域串联重复八次,导致存在八个Rhox2和Rhox3旁系同源物和七个Rhox4旁系同源物。已为大多数这些旁系同源物确定了转录本,除三个外,均预测会产生具有功能潜力的全长蛋白质。我们预测在该基因组位置总共有32个Rhox基因,使其成为任何物种中鉴定到的最丰富的基因同源盒簇。从八个重复的基因组区域之间95%的序列相似性以及Rhox2、3和4个旁系同源物的同义取代率,我们预测重复发生在小鼠和大鼠分化后,并且代表了迄今确定的最年轻的同源盒簇。分子进化分析表明,该簇是一个活跃进化的区域,在选择多样化的情况下,Rhox2和4个旁系同源物,而Rhox3则是中性进化的。通过鉴定Rhox2和Rhox4在调节胚胎干(ES)细胞分化的初始阶段中的重要作用,强调了这种重复的生物学重要性。
    结论:富含基因的Rhox簇为小鼠提供了重要的生物学新奇,我们预测可以为物种形成提供底物。而且,这种独特的簇可以解释小鼠,大鼠和人之间ES细胞衍生和维持中的物种差异。
  • 【来自“进化峡谷”的酿酒酵母自然种群中的分子遗传生物多样性:微卫星多态性,倍性和有争议的性状态。】 复制标题 收藏 收藏
    DOI:10.1534/genetics.106.062745 复制DOI
    作者列表:Ezov TK,Boger-Nadjar E,Frenkel Z,Katsperovski I,Kemeny S,Nevo E,Korol A,Kashi Y
    BACKGROUND & AIMS: :The yeast S. cerevisiae is a central model organism in eukaryotic cell studies and a major component in many food and biotechnological industrial processes. However, the wide knowledge regarding genetics and molecular biology of S. cerevisiae is based on an extremely narrow range of strains. Studies of natural populations of S. cerevisiae, not associated with human activities or industrial fermentation environments, are very few. We isolated a panel of S. cerevisiae strains from a natural microsite, "Evolution Canyon" at Mount Carmel, Israel, and studied their genomic biodiversity. Analysis of 19 microsatellite loci revealed high allelic diversity and variation in ploidy level across the panel, from diploids to tetraploids, confirmed by flow cytometry. No significant differences were found in the level of microsatellite variation between strains derived from the major localities or microniches, whereas strains of different ploidy showed low similarity in allele content. Maximum genetic diversity was observed among diploids and minimum among triploids. Phylogenetic analysis revealed clonal, rather than sexual, structure of the triploid and tetraploid subpopulations. Viability tests in tetrad analysis also suggest that clonal reproduction may predominate in the polyploid subpopulations.
    背景与目标: :酿酒酵母是真核细胞研究中的中心模型生物,在许多食品和生物技术工业过程中都是主要成分。但是,关于酿酒酵母的遗传学和分子生物学的广泛知识是基于非常狭窄的菌株。与人类活动或工业发酵环境无关的酿酒酵母自然种群研究很少。我们从以色列卡梅尔山的天然微型站点“进化峡谷”中分离出一组酿酒酵母菌株,并研究了它们的基因组生物多样性。对19个微卫星基因座的分析显示,从二倍体到四倍体,整个等位基因组中的高等位基因多样性和倍性水平存在差异,这已通过流式细胞仪进行了确认。在来自主要地区或微生态位的菌株之间,微卫星变异水平没有发现显着差异,而具有不同倍性的菌株在等位基因含量上的相似性很低。在二倍体中观察到最大的遗传多样性,在三倍体中观察到最小的遗传多样性。系统发育分析显示三倍体和四倍体亚群的克隆结构,而不是有性结构。四元分析中的生存力测试还表明,在多倍体亚群中克隆繁殖可能占主导地位。
  • 【I型糖尿病易感性候选基因的分析:2q31-35号染色体上基因的病例对照和家庭关联研究。】 复制标题 收藏 收藏
    DOI:10.2337/diab.46.6.1069 复制DOI
    作者列表:Owerbach D,Naya FJ,Tsai MJ,Allander SV,Powell DR,Gabbay KH
    BACKGROUND & AIMS: Recent genome searches suggest a putative linkage of many loci to susceptibility to type I diabetes. The chromosome 2q31-35 region is reported to be linked to susceptibility to type I diabetes and is thought to contain several diabetes susceptibility loci. These candidate genes include the HOXD gene cluster, BETA2, CTLA4, CD28, IGFBP2, and IGFBP5. Association studies in populations and families are required to confirm and/or identify the actual susceptibility loci. We hereby report several previously unknown DNA polymorphisms for HOXD8, BETA2, and IGFBP5, which we have used along with previously known polymorphisms of HOXD8 and CTLA4 to test whether these candidate loci are the susceptibility genes on chromosome 2q31-35. Using a case-control design with a subsequent family-association approach to confirm associations, we find no evidence that these candidate genes are associated with susceptibility to type I diabetes.

    背景与目标: 最近的基因组搜索表明,许多基因位点与I型糖尿病易感性的推测联系。据报道,染色体2q31-35与I型糖尿病易感性相关,并被认为含有几个糖尿病易感性基因座。这些候选基因包括HOXD基因簇,BETA2,CTLA4,CD28,IGFBP2和IGFBP5。需要在人群和家庭中进行协会研究,以确认和/或识别实际的易感基因座。我们在此报告HOXD8,BETA2和IGFBP5的几种先前未知的DNA多态性,并将其与HOXD8和CTLA4的先前已知多态性一起用于测试这些候选基因座是否为2q31-35染色体上的易感性基因。使用病例对照设计和随后的家庭关联方法来确认关联,我们没有发现这些候选基因与I型糖尿病易感性相关的证据。

  • 10 The gene family that cheats Mendel. 复制标题 收藏 收藏

    【欺骗孟德尔的基因家族。】 复制标题 收藏 收藏
    DOI:10.7554/eLife.28567 复制DOI
    作者列表:Shropshire JD,Rokas A
    BACKGROUND & AIMS: :Some alleles of the wtf gene family can increase their chances of spreading by using poisons to kill other alleles, and antidotes to save themselves.
    背景与目标: :wtf基因家族的某些等位基因可以通过使用毒药杀死其他等位基因和解毒剂来拯救自己,从而增加传播的机会。
  • 【有和没有肾结石病家族史的健康学童尿结石的危险因素。】 复制标题 收藏 收藏
    DOI:10.1007/s00467-012-2368-5 复制DOI
    作者列表:Sáez-Torres C,Grases F,Rodrigo D,García-Raja AM,Gómez C,Frontera G
    BACKGROUND & AIMS: BACKGROUND:The prevalence of lithiasis is increasing at all ages. This study aimed to assess the crystallization risk in urine from healthy school children and to determine urinary parameters that are most associated with it. METHODS:Urine samples were obtained from 184 children aged 5-12 years: a spot sample collected in the afternoon, and a 12-h overnight sample. Information was obtained regarding family histories of lithiasis. Urine volume, pH, and biochemical parameters of stone risk were measured. Crystallization risk was defined by the presence of specific urine conditions that had previously been associated with stone formation in vitro. RESULTS:Crystallization risk was observed in 15 % of spot urine samples and 54 % of 12-h samples. Metabolic abnormalities and a low urinary volume were more frequently detected in children with crystallization risk. Calcium excretion and calcium/citrate ratio were higher in children with a family history of lithiasis. CONCLUSIONS:We observed a high prevalence of crystallization risk in urine, especially in children with a family history of the disease. Low urinary volume was the factor most associated with increased risk. Adequate fluid intake at an early age may be a simple and effective measure to reduce the incidence of nephrolithiasis.
    背景与目标: 背景:石斑症的患病率在各个年龄段都在增加。这项研究旨在评估健康学童尿液中结晶的风险,并确定与其最相关的尿液参数。
    方法:从184名5至12岁的儿童获得尿液样本:下午收集现场样本,并收集12小时的过夜样本。获得了有关石尿症家族史的信息。测量尿液体积,pH值和结石风险的生化参数。结晶风险是由以前与体外结石形成有关的特定尿液条件定义的。
    结果:在15%的现货尿液样本和54%的12小时样本中观察到结晶风险。具有结晶风险的儿童更经常检测到代谢异常和尿量低。有结石病家族史的儿童的钙排泄和钙/柠檬酸比更高。
    结论:我们观察到尿液中结晶风险的患病率很高,尤其是在有该病家族史的儿童中。低尿量是与增加风险最相关的因素。早期摄入足够的液体可能是减少肾结石症发生率的一种简单有效的措施。
  • 【马里尼拉白屈菜nov。,一种从海洋太阳能盐分离器分离出的Marinilabiliaceae科的脂解细菌。】 复制标题 收藏 收藏
    DOI:10.1007/s10482-012-9834-8 复制DOI
    作者列表:Shalley S,Pradip Kumar S,Srinivas TN,Suresh K,Anil Kumar P
    BACKGROUND & AIMS: :A Gram-negative, rod shaped, motile bacterium, was isolated from a marine solar saltern sample collected from Kakinada, India. Strain AK2(T) was determined to be positive for nitrate reduction, catalase, Ala-Phe-Pro-arylamidase, β-galactosidase, β-N-acetylglucosaminidase, β-glucosidase, β-xylosidase, α-glucosidase, α-galactosidase and phosphatase activities, hydrolysis of aesculin, Tween 20/40/60/80 and urea. It was determined to be negative for oxidase, lysine decarboxylase and ornithine decarboxylase activities and could not hydrolyze agar, casein, gelatin and starch. The predominant fatty acids were identified as iso-C(15:0) (28.2 %), anteiso-C(15:0) (23.2 %), iso-C(13:0) (19.9 %) and iso-C(15:0) 3-OH (13.9 %). Strain AK2(T) was found to contain menaquinone with seven isoprene units (MK-7) as the sole respiratory quinone and phosphatidylethanolamine, one unidentified phospholipid and three unidentified lipids as polar lipids. The 16S rRNA gene sequence analysis indicated the strain AK2(T) as a member of the genus Marinilabilia and is closely related to Marinilabilia salmonicolor with pair-wise sequence similarity of 98.2 %. Phylogenetic analysis of 16S rRNA gene revealed that the strain AK2(T) clustered with M. salmonicolor. However, DNA-DNA hybridization with M. salmonicolor JCM 21150(T) showed a relatedness of 48 ± 0.5 % with respect to strain AK2(T). The DNA G+C content of the strain was determined to be 40.2 mol%. Based on the phenotypic characteristics and phylogenetic inference, it is proposed that the strain AK2(T) represents a novel species of the genus Marinilabilia, for which the name Marinilabilia nitratireducens sp. nov. is proposed. The type strain of M. nitratireducens sp. nov. is AK2(T) (= MTCC 11402(T) = JCM 17679(T)).
    背景与目标: :从印度Kakinada收集的海洋太阳能盐分离器样本中分离出革兰氏阴性,棒状,能动细菌。确定菌株AK2(T)的硝酸盐还原酶,过氧化氢酶,Ala-Phe-前芳酰胺酶,β-半乳糖苷酶,β-N-乙酰氨基葡萄糖苷酶,β-葡萄糖苷酶,β-木糖苷酶,α-葡萄糖苷酶,α-半乳糖苷酶和磷酸酶活性,七叶皂苷,吐温20/40/60/80和尿素的水解作用。它被确定为氧化酶,赖氨酸脱羧酶和鸟氨酸脱羧酶活性阴性,并且不能水解琼脂,酪蛋白,明胶和淀粉。主要脂肪酸被鉴定为iso-C(15:0)(28.2%),anteiso-C(15:0)(23.2%),iso-C(13:0)(19.9%)和iso-C( 15:0)3-OH(13.9%)。发现菌株AK2(T)含有具有七个异戊二烯单元(MK-7)的甲基萘醌作为唯一的呼吸醌和磷脂酰乙醇胺,一个未确定的磷脂和三个未确定的脂质作为极性脂质。 16S rRNA基因序列分析表明,菌株AK2(T)是马里尼布拉菌属的成员,与马里尼拉鲑鱼色密切相关,成对序列相似性为98.2%。 16S rRNA基因的系统发育分析表明,菌株AK2(T)与沙门氏菌成簇。但是,与鲑鱼支原体JCM 21150(T)的DNA-DNA杂交显示出与菌株AK2(T)的相关性为48±0.5%。测得该菌株的DNA G C含量为40.2mol%。根据表型特征和系统发育推论,建议菌株AK2(T)代表Marinilabilia属的一个新种,其名称为Marinilabilianitroatireducens sp。十一月被提议。硝化分枝杆菌的类型菌株。十一月是AK2(T)(= MTCC 11402(T)= JCM 17679(T))。
  • 【神经性厌食症青少年的增强认知行为疗法:家庭疗法的替代方案?】 复制标题 收藏 收藏
    DOI:10.1016/j.brat.2012.09.008 复制DOI
    作者列表:Dalle Grave R,Calugi S,Doll HA,Fairburn CG
    BACKGROUND & AIMS: :A specific form of family therapy (family-based treatment) is the leading treatment for adolescents with anorexia nervosa. As this treatment has certain limitations, alternative approaches are needed. "Enhanced" cognitive behaviour therapy (CBT-E) is a potential candidate given its utility as a treatment for adults with eating disorder psychopathology. The aim of the present study was to establish, in a representative cohort of patients with marked anorexia nervosa, the immediate and longer term outcome following CBT-E. Forty-nine adolescent patients were recruited from consecutive referrals to a community-based eating disorder clinic. Each was offered 40 sessions of CBT-E over 40 weeks from a single therapist. Two-thirds completed the full treatment with no additional input. In these patients there was a substantial increase in weight together with a marked decrease in eating disorder psychopathology. Over the 60-week post-treatment follow-up period there was little change despite minimal subsequent treatment. These findings suggest that CBT-E may prove to be a cost-effective alternative to family-based treatment.
    背景与目标: :一种特殊形式的家庭治疗(基于家庭的治疗)是神经性厌食症青少年的主要治疗方法。由于这种治疗有一定的局限性,因此需要其他方法。鉴于“增强型”认知行为疗法(CBT-E)可用于患有饮食失调症的心理病理学成年人,因此是一种潜在的候选药物。本研究的目的是在具有明显神经性厌食症的患者的代表性队列中建立CBT-E术后的近期和长期预后。从连续转诊到社区饮食失调诊所招募了49名青少年患者。一位治疗师在40周内为每位患者提供了40次CBT-E疗程。三分之二的人完成了全部治疗,没有其他投入。在这些患者中,体重显着增加,而进食障碍的精神病理学显着下降。在治疗后的60周随访期内,尽管后续治疗最少,但变化不大。这些发现表明,CBT-E可能被证明是替代基于家庭的治疗的一种经济有效的选择。
  • 【香蕉MADS-box家族的全基因组分析与果实的发育和成熟密切相关。】 复制标题 收藏 收藏
    DOI:10.1038/s41598-017-03897-1 复制DOI
    作者列表:Liu J,Zhang J,Zhang J,Miao H,Wang J,Gao P,Hu W,Jia C,Wang Z,Xu B,Jin Z
    BACKGROUND & AIMS: :Proteins encoded by MADS-box genes are important transcription factors involved in the regulation of flowering plant growth and development. Currently, no systematic information exists regarding the MADS-box family in the important tropical fruit banana. Ninety-six MADS-box genes were identified from the banana (Pahang) A genome. Phylogenetic analysis indicated that Musa acuminata MCM1-AGAMOUS- DEFICIENS-SRF (MaMADS) could be divided into MIKCc, MIKC*, Mα/β and Mγ groups. MIKCc could be further divided into 11 subfamilies, which was further supported by conserved motif and gene structure analyses. Transcriptome analysis on the Feng Jiao (FJ) and BaXi Jiao (BX) banana cultivars revealed that MaMADS genes are differentially expressed in various organs, at different fruit development and ripening stages, indicating the involvement of these genes in fruit development and ripening processes. Interactive network analysis indicated that MaMADS24 and 49 not only interacted with MaMADS proteins themselves, but also interacted with hormone-response proteins, ethylene signal transduction and biosynthesis-related proteins, starch biosynthesis proteins and metabolism-related proteins. This systematic analysis identified candidate MaMADS genes related to fruit development and ripening for further functional characterization in plants, and also provided new insights into the transcriptional regulation of MaMADS genes, facilitating the future genetic manipulation of MADS-mediated fruit development and ripening.
    背景与目标: MADS-box基因编码的蛋白质是重要的转录因子,参与开花植物生长发育的调控。目前,在重要的热带水果香蕉中,尚无有关MADS盒家族的系统信息。从香蕉(彭亨州)A基因组中鉴定出96个MADS-box基因。系统发育分析表明,Musus acuminata MCM1-AGAMOUS-DEFICIENS-SRF(MaMADS)可以分为MIKCc,MIKC *,Mα/β和Mγ组。 MIKCc可以进一步分为11个亚家族,这由保守的基序和基因结构分析进一步支持。凤角(FJ)和八喜角(BX)香蕉品种的转录组分析显示,MaMADS基因在不同器官中处于不同的果实发育和成熟阶段,差异表达,表明这些基因参与了果实发育和成熟过程。互动网络分析表明,MaMADS24和49不仅与MaMADS蛋白本身相互作用,而且还与激素响应蛋白,乙烯信号转导和生物合成相关蛋白,淀粉生物合成蛋白和代谢相关蛋白相互作用。这项系统分析确定了与果实发育和成熟有关的候选MaMADS基因,以进一步在植物中进行功能表征,也为MaMADS基因的转录调控提供了新见识,从而促进了MADS介导的果实发育和成熟的未来遗传调控。
  • 【整个哺乳动物NEDD8连接酶家族中独特的N末端乙酰化依赖性相互作用的结构保守性。】 复制标题 收藏 收藏
    DOI:10.1016/j.str.2012.10.013 复制DOI
    作者列表:Monda JK,Scott DC,Miller DJ,Lydeard J,King D,Harper JW,Bennett EJ,Schulman BA
    BACKGROUND & AIMS: :Little is known about molecular recognition of acetylated N termini, despite prevalence of this modification among eukaryotic cytosolic proteins. We report that the family of human DCN-like (DCNL) co-E3s, which promote ligation of the ubiquitin-like protein NEDD8 to cullin targets, recognizes acetylated N termini of the E2 enzymes UBC12 and UBE2F. Systematic biochemical and biophysical analyses reveal 40- and 10-fold variations in affinities among different DCNL-cullin and DCNL-E2 complexes, contributing to varying efficiencies of different NEDD8 ligation cascades. Structures of DCNL2 and DCNL3 complexes with N-terminally acetylated peptides from UBC12 and UBE2F illuminate a common mechanism by which DCNL proteins recognize N-terminally acetylated E2s and how selectivity for interactions dependent on N-acetyl-methionine are established through side chains recognizing distal residues. Distinct preferences of UBC12 and UBE2F peptides for inhibiting different DCNLs, including the oncogenic DCNL1 protein, suggest it may be possible to develop small molecules blocking specific N-acetyl-methionine-dependent protein interactions.
    背景与目标: :尽管在真核细胞溶质蛋白中普遍存在这种修饰,但对乙酰化N末端的分子识别知之甚少。我们报告说,人类DCN样(DCNL)co-E3s的家族,促进泛素样蛋白NEDD8与cullin目标的连接,识别E2酶UBC12和UBE2F的乙酰化N末端。系统的生化和生物物理分析表明,不同的DCNL-cullin和DCNL-E2复合物之间的亲和力变化分别为40倍和10倍,从而导致了不同NEDD8连接级联反应效率的变化。具有来自UBC12和UBE2F的N末端乙酰化肽的DCNL2和DCNL3配合物的结构阐明了DCNL蛋白质识别N末端乙酰化E2的共同机制以及如何通过识别远端残基的侧链建立依赖N-乙酰甲硫氨酸的相互作用的选择性。 UBC12和UBE2F肽对于抑制不同的DCNL(包括致癌DCNL1蛋白)的不同偏好,表明可能开发出阻断特定N-乙酰基-蛋氨酸依赖性蛋白相互作用的小分子。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录