loci

Loci
  • 文章类型: Journal Article
    首次服务的母牛受胎率(HCR1)定义为与繁殖的母牛相比,首次繁殖服务怀孕的母牛数量。这项研究旨在确定通过人工授精繁殖的小母牛的HCR1相关基因座和富集的基因集(AI,n=2829)或进行胚胎移植(ET,n=2086)收件人,通过使用SNP数据(GSEA-SNP)完成全基因组关联分析和基因集富集分析。三个独特的基因座,包含四个位置候选基因,与ET接受者的HCR1相关(p<1×10-5),而GSEA-SNP鉴定了四个基因集(NES≥3)和62个富集HCR1的前沿基因(LEGs)。虽然没有基因座与AI繁殖的HCR1相关,用GSEA-SNP富集HCR1的一个基因集和12个LEG(NES≥3)。这包括HCR1AI和ET服务之间共享的一个基因(PKD2)。确定与HCR1相关或富集的基因座提供了将它们用作基因组选择工具的机会,以促进选择具有更高繁殖效率的牛,更好地了解胚胎丢失。
    Heifer conception rate to the first service (HCR1) is defined as the number of heifers that become pregnant to the first breeding service compared to the heifers bred. This study aimed to identify loci associated and gene sets enriched for HCR1 for heifers that were bred by artificial insemination (AI, n = 2829) or were embryo transfer (ET, n = 2086) recipients, by completing a genome-wide association analysis and gene set enrichment analysis using SNP data (GSEA-SNP). Three unique loci, containing four positional candidate genes, were associated (p < 1 × 10-5) with HCR1 for ET recipients, while the GSEA-SNP identified four gene sets (NES ≥ 3) and sixty-two leading edge genes (LEGs) enriched for HCR1. While no loci were associated with HCR1 bred by AI, one gene set and twelve LEGs were enriched (NES ≥ 3) for HCR1 with the GSEA-SNP. This included one gene (PKD2) shared between HCR1 AI and ET services. Identifying loci associated or enriched for HCR1 provides an opportunity to use them as genomic selection tools to facilitate the selection of cattle with higher reproductive efficiency, and to better understand embryonic loss.
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  • 文章类型: Journal Article
    系统发育分析已进入基因组学(多位点)时代。对于经验不足的研究人员来说,征服基于多位点的系统发育重建所需的大量软件程序可能有些令人生畏且耗时。PhyloSuite,具有用户友好GUI的软件,旨在通过整合多位点和单基因系统发育所需的多个软件程序,并进一步简化整个过程,从而使这一过程更易于访问。在这个协议中,我们的目的是解释如何在PhyloSuite中进行系统发育管道和基于树的分析的每个步骤。我们还提出了一个新版本的PhyloSuite(v1.2.3),其中我们修复了一些错误,做了一些优化,并引入了一些新功能,包括一些基于树的分析,如信噪比计算,饱和度分析,虚假物种鉴定,等。分步协议包括背景信息(即,步骤做什么),原因(即,为什么要执行步骤),和操作(即,如何做到这一点)。该协议将帮助研究人员快速启动他们的方式通过多位点系统发育分析,尤其是那些有兴趣进行基于细胞器的分析。
    Phylogenetic analysis has entered the genomics (multilocus) era. For less experienced researchers, conquering the large number of software programs required for a multilocus-based phylogenetic reconstruction can be somewhat daunting and time-consuming. PhyloSuite, a software with a user-friendly GUI, was designed to make this process more accessible by integrating multiple software programs needed for multilocus and single-gene phylogenies and further streamlining the whole process. In this protocol, we aim to explain how to conduct each step of the phylogenetic pipeline and tree-based analyses in PhyloSuite. We also present a new version of PhyloSuite (v1.2.3), wherein we fixed some bugs, made some optimizations, and introduced some new functions, including a number of tree-based analyses, such as signal-to-noise calculation, saturation analysis, spurious species identification, and etc. The step-by-step protocol includes background information (i.e., what the step does), reasons (i.e., why do the step), and operations (i.e., how to do it). This protocol will help researchers quick-start their way through the multilocus phylogenetic analysis, especially those interested in conducting organelle-based analyses.
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  • 文章类型: Randomized Controlled Trial
    背景:理论和相关研究表明,组织领导力和气候对于在医疗机构中成功实施循证实践(EBP)很重要;但是,缺乏实验证据。我们使用WISDOM(实施和维持数字结果措施)混合III型有效性实施试验的数据解决了这一差距。WISDOM的主要结果表明,领导力和组织变革实施(LOCI)策略提高了青年心理健康服务中基于测量的护理(MBC)的保真度。在这项研究中,我们测试了LOCI假设的变化机制,即:(1)LOCI将改善实施和变革型领导,这反过来将(2)调解LOCI对实施气候的影响,这反过来将(3)介导LOCI对MBC保真度的影响。
    方法:21个为青年服务的门诊精神卫生诊所被随机分配到LOCI加MBC培训和技术援助或仅MBC培训和技术援助。临床医生评价他们的领导人“实施领导”,变革型领导,和MBC在五个时间点的临床实施气候(基线,4-,8-,12-,和基线后18个月)。使用电子元数据对在MBC训练后12个月内开始治疗的青年门诊患者评估MBC保真度。使用纵向混合效应模型和多层次中介分析对假设进行了检验。
    结果:LOCI在4-从基线到后续行动显着改善了实施领导和实施氛围。8-,12-,和基线后18个月(所有ps<0.01),产生大的效果(ds=0.76到1.34的范围)。LOCI对变革型领导的影响在4个月时较小(d=0.31,p=0.019),此后不显著(ps>.05)。LOCI从基线到12个月的临床实施气候的改善是通过从基线到4个月的实施领导的改善来介导的(介导的比例[pm]=0.82,p=.004)。变革型领导没有调解LOCI对实施气候的影响(p=0.136)。从基线到12个月,临床实施气候的改善介导了LOCI对同期MBC保真度的影响(pm=0.71,p=0.045)。
    结论:LOCI通过改善临床实施氛围,改善了青年心理健康服务中的MBC保真度,这本身通过加强执行领导而得到了改善。通过培养组织领导者和强大的实施环境,可以提高医疗保健环境中EBP的保真度。
    背景:ClinicalTrials.gov标识符:NCT04096274。2019年9月18日注册。
    BACKGROUND: Theory and correlational research indicate organizational leadership and climate are important for successful implementation of evidence-based practices (EBPs) in healthcare settings; however, experimental evidence is lacking. We addressed this gap using data from the WISDOM (Working to Implement and Sustain Digital Outcome Measures) hybrid type III effectiveness-implementation trial. Primary outcomes from WISDOM indicated the Leadership and Organizational Change for Implementation (LOCI) strategy improved fidelity to measurement-based care (MBC) in youth mental health services. In this study, we tested LOCI\'s hypothesized mechanisms of change, namely: (1) LOCI will improve implementation and transformational leadership, which in turn will (2) mediate LOCI\'s effect on implementation climate, which in turn will (3) mediate LOCI\'s effect on MBC fidelity.
    METHODS: Twenty-one outpatient mental health clinics serving youth were randomly assigned to LOCI plus MBC training and technical assistance or MBC training and technical assistance only. Clinicians rated their leaders\' implementation leadership, transformational leadership, and clinic implementation climate for MBC at five time points (baseline, 4-, 8-, 12-, and 18-months post-baseline). MBC fidelity was assessed using electronic metadata for youth outpatients who initiated treatment in the 12 months following MBC training. Hypotheses were tested using longitudinal mixed-effects models and multilevel mediation analyses.
    RESULTS: LOCI significantly improved implementation leadership and implementation climate from baseline to follow-up at 4-, 8-, 12-, and 18-month post-baseline (all ps < .01), producing large effects (range of ds = 0.76 to 1.34). LOCI\'s effects on transformational leadership were small at 4 months (d = 0.31, p = .019) and nonsignificant thereafter (ps > .05). LOCI\'s improvement of clinic implementation climate from baseline to 12 months was mediated by improvement in implementation leadership from baseline to 4 months (proportion mediated [pm] = 0.82, p = .004). Transformational leadership did not mediate LOCI\'s effect on implementation climate (p = 0.136). Improvement in clinic implementation climate from baseline to 12 months mediated LOCI\'s effect on MBC fidelity during the same period (pm = 0.71, p = .045).
    CONCLUSIONS: LOCI improved MBC fidelity in youth mental health services by improving clinic implementation climate, which was itself improved by increased implementation leadership. Fidelity to EBPs in healthcare settings can be improved by developing organizational leaders and strong implementation climates.
    BACKGROUND: ClinicalTrials.gov identifier: NCT04096274. Registered September 18, 2019.
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  • 文章类型: Journal Article
    目标:基于测量的护理(MBC),它收集患者的会话症状数据,并为临床医生提供有关治疗反应的反馈,是一种高度可推广的循证实践,在忠实实施时,具有改善青年心理健康治疗结果的巨大潜力;然而,它很少在社区环境中使用。这项研究测试了针对组织领导和组织实施氛围的实施策略是否可以改善门诊精神卫生诊所中年轻人的MBC保真度和临床结果。
    方法:在一项整群随机试验中,21个诊所被分配到领导和组织变革实施战略以及MBC的培训和技术援助(k=11,n=117)或仅培训和技术援助(k=10,n=117)。收集MBC保真度(通过电子元数据评估)和青年症状改善(通过护理人员报告的儿童总问题评分的Shortform评估的变化评估)的主要结果,以连续入组的青年(4-18岁)开始治疗。MBC培训后12个月。基线后6个月评估每个青年的结果。
    结果:共有234名青年入组并纳入意向治疗分析。在基线,临床上的病情没有显着差异,临床医生,或青年特征。与对照诊所的年轻人相比,使用领导力和组织变革实施策略的诊所的年轻人经历了更高的MBC保真度(23.1%vs3.4%,p=.014),从基线到6个月,症状明显减少(d=0.31,95%CI:0.04-0.58,p=0.023)。
    结论:针对组织领导和重点实施氛围的实施策略可以提高对青年心理健康服务的循证实践和临床结果的忠诚度。
    背景:数字MBC在青年心理健康服务中的实施和维持;https://clinicaltrials.gov/;NCT04096274。
    OBJECTIVE: Measurement-based care (MBC), which collects session-by-session symptom data from patients and provides clinicians with feedback on treatment response, is a highly generalizable evidence-based practice with significant potential to improve the outcomes of mental health treatment in youth when implemented with fidelity; however, it is rarely used in community settings. This study tested whether an implementation strategy targeting organizational leadership and organizational implementation climate could improve MBC fidelity and clinical outcomes for youth in outpatient mental health clinics.
    METHODS: In a cluster randomized trial, 21 clinics were assigned to the Leadership and Organizational Change for Implementation strategy plus training and technical assistance in MBC (k = 11, n = 117) or training and technical assistance only (k = 10, n = 117). Primary outcomes of MBC fidelity (assessed via electronic metadata) and youth symptom improvement (assessed via caregiver-reported change on the Shortform Assessment for Children Total Problem Score) were collected for consecutively enrolled youths (ages 4-18 years) who initiated treatment in the 12 months following MBC training. Outcomes of each youth were assessed for 6 months following baseline.
    RESULTS: A total of 234 youths were enrolled and included in intent-to-treat analyses. At baseline, there were no significant differences by condition in clinic, clinician, or youth characteristics. Youths in clinics using the Leadership and Organizational Change for Implementation strategy experienced significantly higher MBC fidelity compared with youths in control clinics (23.1% vs 3.4%, p = .014), and exhibited significantly greater reductions in symptoms from baseline to 6 months (d = 0.31, 95% CI: 0.04-0.58, p = .023).
    CONCLUSIONS: Implementation strategies targeting organizational leadership and focused implementation climate can improve fidelity to evidence-based practices and clinical outcomes of youth mental health services.
    BACKGROUND: Working to Implement and Sustain Digital Outcome Measures (WISDOM); https://clinicaltrials.gov/; NCT04096274.
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  • 文章类型: Journal Article
    背景:全基因组关联研究(GWAS)对于通过了解标记-性状关联(MTA)来加速作物改良非常重要。本报告使用DArTSNP标记,使用270个bambara花生[Vignasubterranea(L.)Verdc。]来自不同来源的地方品种。该研究旨在使用GWAS及其候选基因鉴定9个农艺性状的标记性状关联。实验是在α晶格设计中布置的两个不同位置进行的。the豆[Vignaunguiculata(L.)沃尔普。]参考基因组(即与bambara花生最密切相关的豆类基因组)协助鉴定候选基因。
    结果:分析表明,连锁不平衡迅速衰减,平均遗传距离为148kb。广义遗传力相对较高,范围从48.39%(末端叶长)到79.39%(每株豆荚数)。GWAS为9个研究性状确定了总共27个显着的标记-性状关联(MTA),解释了5.27%至24.86%的表型变异。在研究的特征中,最高数量的MTA是从种皮颜色获得的(6),其次是开花天数(5),而最少的是到期日(1),解释5.76%到11.03%,14.5%至19.49%,和11.66%的表型变异,分别。此外,共鉴定出17个候选基因,不同性状的数量不同;种皮颜色(6),开花天数(3),末端叶长(2),末端叶宽度(2),每个豆荚的种子数量(2),豆荚宽度(1)和成熟天数(1)。
    结论:这些结果揭示了GWAS在鉴定与花生农艺性状相关的SNP变异方面的前景。此外,它目前有新的机会探索GWAS和标记辅助策略在bambara花生育种中加速作物改良。
    BACKGROUND: Genome-wide association studies (GWAS) are important for the acceleration of crop improvement through knowledge of marker-trait association (MTA). This report used DArT SNP markers to successfully perform GWAS on agro-morphological traits using 270 bambara groundnut [Vigna subterranea (L.) Verdc.] landraces sourced from diverse origins. The study aimed to identify marker traits association for nine agronomic traits using GWAS and their candidate genes. The experiment was conducted at two different locations laid out in alpha lattice design. The cowpea [Vigna unguiculata (L.) Walp.] reference genome (i.e. legume genome most closely related to bambara groundnut) assisted in the identification of candidate genes.
    RESULTS: The analyses showed that linkage disequilibrium was found to decay rapidly with an average genetic distance of 148 kb. The broadsense heritability was relatively high and ranged from 48.39% (terminal leaf length) to 79.39% (number of pods per plant). The GWAS identified a total of 27 significant marker-trait associations (MTAs) for the nine studied traits explaining 5.27% to 24.86% of phenotypic variations. Among studied traits, the highest number of MTAs was obtained from seed coat colour (6) followed by days to flowering (5), while the least is days to maturity (1), explaining 5.76% to 11.03%, 14.5% to 19.49%, and 11.66% phenotypic variations, respectively. Also, a total of 17 candidate genes were identified, varying in number for different traits; seed coat colour (6), days to flowering (3), terminal leaf length (2), terminal leaf width (2), number of seed per pod (2), pod width (1) and days to maturity (1).
    CONCLUSIONS: These results revealed the prospect of GWAS in identification of SNP variations associated with agronomic traits in bambara groundnut. Also, its present new opportunity to explore GWAS and marker assisted strategies in breeding of bambara groundnut for acceleration of the crop improvement.
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  • 文章类型: Journal Article
    <b>背景和目标:</b>印度尼西亚由具有不同文化的不同民族组成。然而,关于印度尼西亚每个种族的等位基因频率和遗传变异的研究尚未建立。因此,对13个STR基因座小组进行了一项研究,以分析mentawai种群,以增强印度尼西亚种群的遗传数据库和遗传变异。Mentawai是居住在Mentawai岛上的印度尼西亚部落之一,西苏门答腊。<b>材料和方法:</b>使用用于从血液中提取DNA的PrepFiler试剂盒和用于扩增13个基因座的GlobalFiler试剂盒。遗传分析仪ABIPRISM3500用于检测PCR产物。通过EasyDNA和FORSTAT软件处理和分析数据。<b>结果:</b>获得了Mentawai群体中13个常染色体位点的等位基因频率数据。发现TPOX的预期杂合性最小值为0.607,FGA的最大值为0.866。辨别力(PD)值的范围从TPOX(0.792)到FGA(0.968)。所有基因座的多态性信息含量(PIC)值均较高,范围从TPOX的0.642到vWA的0.921。在这些发现中检测到三个脱离阶梯等位基因。TH01基因座处的等位基因6.3和D18S51基因座处的等位基因14.2是精致的。13个基因座的平均期望杂合度和平均判别力值分别为75.9和90.1%,表明了惊人的基因多样性。<b>结论:</b>这13个STR基因座可用于群体遗传学研究和法医学鉴定。
    <b>Background and Objective:</b> Indonesia consists of various ethnic groups with diverse cultures. However, research on allele frequencies and genetic variations of each ethnic group in Indonesia has not been well established. Therefore, a study was conducted on 13 STR loci panels to analyze the mentawai population as an enhancement of the Indonesian population\'s genetic data library and genetic variation. Mentawai is one of the Indonesian tribes who live on Mentawai Island, West Sumatera. <b>Materials and Methods:</b> The PrepFiler kit to extract DNA from blood and the GlobalFiler kit for amplifying the 13 loci were used. The genetic analyzer ABI PRISM 3500 was used to detect PCR products. Data were processed and analyzed by EasyDNA and FORSTAT software. <b>Results:</b> The allele frequency data for 13 autosomal loci in Mentawai populations were obtained. Expected heterozygosity was found with a minimum of 0.607 for TPOX and a maximum of 0.866 for FGA. Power of discrimination (PD) values ranges from TPOX (0.792) to FGA (0.968). Polymorphic information content (PIC) values for all loci were high, ranging from 0.642 for TPOX to 0.921 for vWA. Three off-ladder alleles in these findings were detected. Allele 6.3 at the TH01 loci and allele 14.2 at the D18S51 loci are exquisite. The mean expected heterozygosity and mean power of discrimination value across the 13 loci were 75.9 and 90.1%, indicating striking gene diversity. <b>Conclusion:</b> These 13 STR loci can be used for population genetic studies and forensic identification.
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  • 文章类型: Journal Article
    GlobalFiler™PCR扩增试剂盒是当今最敏感的试剂盒之一,它使人类DNA的PCR扩增成为可能。使用这种特异性试剂盒进行PCR扩增可以在DNA中产生数百万拷贝的24种特异性靶序列,称为标记或基因座。这个试剂盒是6-染料,短串联重复序列(STR)多重测定试剂盒,具有与DNA样品组合的引物和单链寡核苷酸的合成混合物,然后进行29或30个变性循环,退火,和延伸,根据实验室协议。仪器操作方法将根据所使用的热循环仪仪器型号而变化。然而,GlobalFiler™PCR扩增试剂盒已被证明是DNA分析师非常有用的工具,扩增极少量的DNA,使得可以检测部分,如果未满,来自广泛样本类型的遗传图谱。本章讨论了人类法医DNA样品的典型制备和PCR扩增,使用GlobalFiler™PCR扩增试剂盒。
    The GlobalFiler™ PCR Amplification Kit is one of the most sensitive kits that exist today that makes the PCR amplification of human DNA possible. PCR amplification using this specific kit makes millions of copies of 24 specific target sequences in the DNA, called markers or loci. This kit is a 6-dye, short tandem repeat (STR) multiplex assay kit that has a synthetic mix of primers and single-stranded oligonucleotides that are combined with DNA samples and then subjected to 29 or 30 cycles of denaturing, annealing, and extension, as per laboratory protocol. Methods for instrument operation will vary depending on the thermal cycler instrument model that is used. Nevertheless, the GlobalFiler™ PCR Amplification Kit has proven to be a very useful tool to DNA analysts, amplifying extremely low quantities of DNA, making it possible to detect partial, if not full, genetic profiles from a wide range of sample types. This chapter discusses the typical preparation and PCR amplification of human forensic DNA samples, using the GlobalFiler™ PCR Amplification Kit.
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  • 文章类型: Journal Article
    当疾病基因中只有一个显性等位基因足以表达表型时,通常会发生常染色体显性非综合征性听力损失(HL)。因此,大多数被诊断为常染色体显性遗传非综合征HL的患者都有听力受损的父母,尽管在所有阴性家族史的病例中都应考虑从头突变。迄今为止,已鉴定出常染色体显性遗传的非综合征HL的50多个基因和80个基因座。DFNA22(MYO6基因),DFNA8/12(TECTA基因),DFNA20/26(ACTG1基因),DFNA6/14/38(WFS1基因),DFNA15(POU4F3基因),DFNA2A(KCNQ4基因),和DFNA10(EYA4基因)是常染色体显性遗传非综合征HL的一些最常见形式。常染色体显性遗传的非综合征HL的特征是异质的。然而,在大多数情况下,HL往往是双边的,语言后发病(童年至成年早期),高频(倾斜测听配置),进步,和不同的严重程度(轻度至深度)。DFNA1(DIAPH1基因)和DFNA6/14/38(WFS1基因)是影响低频的常染色体显性遗传非综合征性HL的最常见形式,而DFNA16(未知基因)的特征是HL波动。长期的听力学随访对于及早发现听力阈值恶化并确保及时使用助听器或人工耳蜗进行治疗至关重要。
    Autosomal dominant non-syndromic hearing loss (HL) typically occurs when only one dominant allele within the disease gene is sufficient to express the phenotype. Therefore, most patients diagnosed with autosomal dominant non-syndromic HL have a hearing-impaired parent, although de novo mutations should be considered in all cases of negative family history. To date, more than 50 genes and 80 loci have been identified for autosomal dominant non-syndromic HL. DFNA22 (MYO6 gene), DFNA8/12 (TECTA gene), DFNA20/26 (ACTG1 gene), DFNA6/14/38 (WFS1 gene), DFNA15 (POU4F3 gene), DFNA2A (KCNQ4 gene), and DFNA10 (EYA4 gene) are some of the most common forms of autosomal dominant non-syndromic HL. The characteristics of autosomal dominant non-syndromic HL are heterogenous. However, in most cases, HL tends to be bilateral, post-lingual in onset (childhood to early adulthood), high-frequency (sloping audiometric configuration), progressive, and variable in severity (mild to profound degree). DFNA1 (DIAPH1 gene) and DFNA6/14/38 (WFS1 gene) are the most common forms of autosomal dominant non-syndromic HL affecting low frequencies, while DFNA16 (unknown gene) is characterized by fluctuating HL. A long audiological follow-up is of paramount importance to identify hearing threshold deteriorations early and ensure prompt treatment with hearing aids or cochlear implants.
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  • 文章类型: Journal Article
    阿尔茨海默病(Alzheimer’sdisease,AD)是世界上最常见的神经退行性疾病。分为家族性和零星性。显性家族性或常染色体表现占病例总数的1-5%。它被归类为早发性(EOAD;<65岁),并在早老素1(PSEN1)中呈现基因突变,早老素2(PSEN2),或淀粉样前体蛋白(APP)。散发性AD占病例的95%,被归类为迟发性(LOAD)。发生在65岁以上的患者中。在散发性AD中已经确定了几种危险因素;衰老是主要因素。尽管如此,多个基因与不同的神经病理学事件相关,涉及LOAD,如淀粉样β(Aβ)肽和Tau蛋白的病理加工,以及突触和线粒体功能障碍,神经血管改变,氧化应激,和神经炎症,在其他人中。有趣的是,使用全基因组关联研究(GWAS)技术,已经鉴定了许多与LOAD相关的多态性。本文旨在分析与AD病理生理学密切相关的新遗传学发现。同样,它分析了迄今为止通过GWAS鉴定的多个突变,这些突变与发生这种神经变性的高或低风险相关.了解遗传变异性将允许识别早期生物标志物和AD的适当治疗靶标。
    Alzheimer\'s disease (AD) is the most common neurodegenerative disease in the world. It is classified as familial and sporadic. The dominant familial or autosomal presentation represents 1-5% of the total number of cases. It is categorized as early onset (EOAD; <65 years of age) and presents genetic mutations in presenilin 1 (PSEN1), presenilin 2 (PSEN2), or the Amyloid precursor protein (APP). Sporadic AD represents 95% of the cases and is categorized as late-onset (LOAD), occurring in patients older than 65 years of age. Several risk factors have been identified in sporadic AD; aging is the main one. Nonetheless, multiple genes have been associated with the different neuropathological events involved in LOAD, such as the pathological processing of Amyloid beta (Aβ) peptide and Tau protein, as well as synaptic and mitochondrial dysfunctions, neurovascular alterations, oxidative stress, and neuroinflammation, among others. Interestingly, using genome-wide association study (GWAS) technology, many polymorphisms associated with LOAD have been identified. This review aims to analyze the new genetic findings that are closely related to the pathophysiology of AD. Likewise, it analyzes the multiple mutations identified to date through GWAS that are associated with a high or low risk of developing this neurodegeneration. Understanding genetic variability will allow for the identification of early biomarkers and opportune therapeutic targets for AD.
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  • 文章类型: Journal Article
    Brugada综合征(BrS)是一种罕见的遗传性心律失常,具有独特的心电图模式,与年轻人室性心律失常和心源性猝死(SCD)的风险增加相关。BrS在机制方面是一个复杂的实体,遗传学,诊断,心律失常风险分层,和管理。BrS的主要电生理机制需要进一步研究,流行的理论集中在反常的复极化上,去极化,和电流负载匹配。计算建模,临床前,和临床研究表明,BrS分子异常导致激发波长(k)的改变,最终会增加心律失常的风险。尽管在大约二十年前首次报道了SCN5A(钠电压门控通道α亚基5)基因的突变,BrS目前仍被认为是一种常染色体显性遗传的孟德尔疾病,外显率不完全。尽管遗传学领域的最新发展和其他遗传途径的最新假设提出了更复杂的遗传模式。尽管广泛使用下一代测序(NGS)技术具有高覆盖率,在一些临床确诊的病例中,遗传学仍然无法解释。除了编码心脏钠通道NaV1.5的SCN5A外,易感基因大部分仍未被识别。心脏转录因子位点的优势表明转录调控对Brugada综合征的发病机制至关重要。似乎BrS是一种多因素疾病,它受到几个基因座的影响,每个都受到环境的影响。BrS1型心电图患者的主要挑战是识别那些有猝死风险的人。研究人员建议使用多参数临床和工具策略进行风险分层.这篇综述的目的是总结针对BrS遗传结构的最新发现,并为其分子基础和风险分层的新模型提供新的观点。
    Brugada syndrome (BrS) is a rare hereditary arrhythmia disorder, with a distinctive ECG pattern, correlated with an increased risk of ventricular arrhythmias and sudden cardiac death (SCD) in young adults. BrS is a complex entity in terms of mechanisms, genetics, diagnosis, arrhythmia risk stratification, and management. The main electrophysiological mechanism of BrS requires further research, with prevailing theories centered on aberrant repolarization, depolarization, and current-load match. Computational modelling, pre-clinical, and clinical research show that BrS molecular anomalies result in excitation wavelength (k) modifications, which eventually increase the risk of arrhythmia. Although a mutation in the SCN5A (Sodium Voltage-Gated Channel Alpha Subunit 5) gene was first reported almost two decades ago, BrS is still currently regarded as a Mendelian condition inherited in an autosomal dominant manner with incomplete penetrance, despite the recent developments in the field of genetics and the latest hypothesis of additional inheritance pathways proposing a more complex mode of inheritance. In spite of the extensive use of the next-generation sequencing (NGS) technique with high coverage, genetics remains unexplained in a number of clinically confirmed cases. Except for the SCN5A which encodes the cardiac sodium channel NaV1.5, susceptibility genes remain mostly unidentified. The predominance of cardiac transcription factor loci suggests that transcriptional regulation is essential to the Brugada syndrome\'s pathogenesis. It appears that BrS is a multifactorial disease, which is influenced by several loci, each of which is affected by the environment. The primary challenge in individuals with a BrS type 1 ECG is to identify those who are at risk for sudden death, researchers propose the use of a multiparametric clinical and instrumental strategy for risk stratification. The aim of this review is to summarize the latest findings addressing the genetic architecture of BrS and to provide novel perspectives into its molecular underpinnings and novel models of risk stratification.
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