Valine

缬氨酸
  • 文章类型: Journal Article
    阿尔茨海默病(AD)是一种神经退行性疾病,其特征是进行性认知恶化,功能障碍,神经精神症状.Valiltramipacate是一种正在研究的曲米酸前药,作为AD的新型治疗方法。
    在线数据库PubMed,Embase,WebofScience,科克伦图书馆,和ClinicalTrials.gov使用术语\'ALZ-801\'或\'valiltramiprosate进行搜索。对Alzheon新闻稿进行了审查,了解新出现的临床信息。Valiltramiprosate是一种口服,耐受性良好的合成缬氨酸-曲米酸偶联前药。Valiltramipacate的活性代谢产物包括tramipacate和3-磺基丙酸。提出的作用机制是多配体与Aβ42结合,其稳定淀粉样蛋白单体以防止肽聚集和寡聚化。药代动力学研究显示52%的口服生物利用度,快速吸收,大约40%的脑内药物暴露,接近完全肾清除.与曲米普酸相比,伐拉米酸延长了血浆曲米酸的半衰期,并改善了个体间的药代动力学变异性。来自伐拉米酸的II期生物标志物试验的中期分析显示:(1)血浆p-tau181和相关AD流体生物标志物的显着减少;(2)通过MRI保留脑结构并减少海马萎缩;(3)在多个时间点的认知评估方面的改善。ApoEε4纯合子的III期临床试验已接近完成。
    Valiltramiprosate的临床试验数据显示,在AD中具有潜在的疾病改善作用的早期疗效。
    UNASSIGNED: Alzheimer\'s disease (AD) is a neurodegenerative condition characterized by progressive cognitive deterioration, functional impairments, and neuropsychiatric symptoms. Valiltramiprosate is a tramiprosate prodrug being investigated as a novel treatment for AD.
    UNASSIGNED: The online databases PubMed, Embase, Web of Science, Cochrane Library, and ClinicalTrials.gov were searched using the terms \'ALZ-801\' or \'valiltramiprosate.\' Alzheon press releases were reviewed for emerging clinical information. Valiltramiprosate is an oral, well-tolerated synthetic valine-conjugate prodrug of tramiprosate. Valiltramiprosate\'s active metabolite include tramiprosate and 3-sulfopropanoic acid. Proposed mechanism of action is multiligand binding to Aβ42 which stabilizes amyloid monomers to prevent peptide aggregation and oligomerization. Pharmacokinetic studies show 52% oral bioavailability, rapid absorption, approximately 40% brain-drug exposure, and near complete renal clearance. Compared to tramiprosate, valiltramiprosate extends plasma tramiprosate half-life and improves interindividual pharmacokinetic variability. Interim analyses from valiltramiprosate\'s phase II biomarker trial show: (1) significant reductions in plasma p-tau181 and related AD fluid biomarkers; (2) brain structure preservation and reduced hippocampal atrophy by MRI; and (3) improvements on cognitive assessments at multiple timepoints. Its phase III clinical trial in ApoE ε4 homozygotes is near completion.
    UNASSIGNED: Valiltramiprosate\'s clinical trial data show early indications of efficacy with potential disease modifying effect in AD.
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  • 文章类型: Comparative Study
    迟发性运动障碍(TD)是一种以不自主运动为特征的神经系统疾病,通常由多巴胺受体拮抗剂引起。囊泡单胺转运蛋白2(VMAT2)抑制剂,如戊苯那嗪和对丁苯那嗪,已经成为有希望的TD疗法,一些临床试验已经显示出它们的疗效。本研究旨在比较VMAT2抑制剂的疗效和安全性。重点是最近在亚洲人群中进行的一项试验。
    我们回顾了PubMed,科克伦图书馆,Embase数据库,和clinicaltrials.gov在2017年1月至2023年10月之间,使用关键字\"迟发性运动障碍\"和(\"valbenazine\"[所有字段]或\"deutrabenazine\"[所有字段])和\"临床试验\"。对综述的文章进行了疗效和副作用研究。
    最初的搜索产生了230篇文章,其中104个是重复的。在标题和摘要筛选之后,另有25条被排除在外。全文审查导致排除了另外96篇文章。最终,4项双盲临床试验符合纳入标准.deutrabenazine研究显示,与安慰剂相比,异常非自愿运动量表(AIMS)得分显着改善。不良事件无差异。缬草那嗪研究显示了在减少TD症状方面的良好结果,并且耐受性良好。
    本分析中回顾的研究强调了对丁苯那嗪和缬草嗪作为不同人群中TD的有价值的治疗选择的潜力。两种药物都显示出AIMS评分的显着改善,表明它们在管理TD症状方面的有效性。此外,他们表现出良好的安全性,严重不良事件发生率低,QT间期延长无显著增加,帕金森病,自杀意念,或死亡率。
    所审查的研究强调了对丁苯那嗪和缬草嗪作为迟发性运动障碍治疗的有希望的疗效和耐受性,为受这种挑战性疾病影响的个人提供新的希望。
    UNASSIGNED: Tardive Dyskinesia (TD) is a neurological disorder characterized by involuntary movements, often caused by dopamine receptor antagonists. Vesicular Monoamine Transporter 2 (VMAT2) inhibitors, such as valbenazine and deutetrabenazine, have emerged as promising therapies for TD and several clinical trials have shown their efficacy. This study aims to compare the efficacy and safety profile of VMAT2 inhibitors, focusing on a recent trial conducted in the Asian population.
    UNASSIGNED: We reviewed the PubMed, Cochrane Library, Embase database, and clinicaltrials.gov between January 2017 and October 2023, using the keywords \"tardive dyskinesia\" AND (\"valbenazine\" [all fields] OR \" deutetrabenazine \" [all fields]) AND \"clinical trial\". The reviewed articles were studied for efficacy and side effects.
    UNASSIGNED: An initial search yielded 230 articles, of which 104 were duplicates. Following the title and abstract screening, 25 additional articles were excluded. A full-text review resulted in the exclusion of 96 more articles. Ultimately, four double-blind clinical trials met the inclusion criteria. The deutetrabenazine studies demonstrated significant improvements in Abnormal Involuntary Movement Scale (AIMS) scores compared to placebo, with no difference in adverse events. The valbenazine studies showed favorable results in reducing TD symptoms and were well-tolerated.
    UNASSIGNED: The studies reviewed in this analysis underscore the potential of deutetrabenazine and valbenazine as valuable treatment options for TD in diverse populations. Both medications demonstrated significant improvements in AIMS scores, suggesting their effectiveness in managing TD symptoms. Additionally, they exhibited favorable safety profiles, with low rates of serious adverse events and no significant increase in QT prolongation, parkinsonism, suicidal ideation, or mortality.
    UNASSIGNED: The studies reviewed highlight the promising efficacy and tolerability of deutetrabenazine and valbenazine as treatments for Tardive Dyskinesia, providing new hope for individuals affected by this challenging condition.
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  • 文章类型: Meta-Analysis
    目的:我们评估了泛基因型方案的有效性和安全性,glecaprevir/pibrentasvir(GLE/PIB),sofosbuvir/velpatasvir(SOF/VEL),和sofosbuvir/daclatasvir(SOF/DCV)和其他直接作用的抗病毒药物(DAA)方案,用于治疗丙型肝炎病毒(HCV)感染的青少年(12-18岁),年龄较大的儿童(6-11岁),和幼儿(3-5岁)。本系统评价和荟萃分析的目的是为世界卫生组织(WHO)指南提供信息。
    方法:我们纳入了截至2021年8月11日发表的临床试验和观察性研究,这些研究评估了HCV感染青少年的DAA方案,年龄较大的孩子,和年幼的孩子。我们搜索了MEDLINE,EMBASE,以及CENTRAL数据库和关键会议摘要。治疗结束后12周的持续病毒学应答(SVR12),不良事件(AE),和治疗终止是对结局的评估.使用改良版本的ROBINS-I工具评估偏倚风险。使用随机效应模型汇集数据,并使用等级方法评估证据的确定性。
    结果:共49项研究,包括1882名青少年,436名年龄较大的儿童,166名儿童被考虑。SVR12为100%(95%置信区间:96-100),96%(90-100),青少年GLE/PIB占96%(83-100),年长的,和年幼的孩子,分别为95%(90-99),93%(86-98),和83%(70-93),对于SOF/VEL,青少年和大龄儿童的SOF/DCV分别为100%(97-100)和100%(94-100),分别。有一个明显的趋势是,任何报告的青少年不良事件的发生率更高(50%),年龄较大的儿童(53%),幼儿(72%)。严重的不良事件和治疗中断在青少年和年龄较大的儿童中不常见(<1%),但在幼儿中略高(3%)。
    结论:所有三种泛基因型DAA治疗方案都非常有效且耐受性良好,目前WHO推荐用于成人。青少年,和3岁以下的孩子,这将简化采购和供应链管理。证据主要基于单臂非随机对照研究。此外,还缺少有关关键变量的数据,例如HCV获取途径,是否存在肝硬化,或HIV合并感染,无法评估这些因素对结局的影响。
    CRD42020146752。
    OBJECTIVE: We evaluated the effectiveness and safety of pan-genotypic regimens, glecaprevir/pibrentasvir (GLE/PIB), sofosbuvir/velpatasvir (SOF/VEL), and sofosbuvir/daclatasvir (SOF/DCV) and other direct-acting antivirals (DAA) regimens for the treatment of hepatitis C virus (HCV)-infected adolescents (12-18 years), older children (6-11 years), and young children (3-5 years). The purpose of this systematic review and meta-analysis was to inform the World Health Organization (WHO) guidelines.
    METHODS: We included clinical trials and observational studies published up to August 11, 2021, that evaluated DAA regimens in HCV-infected adolescents, older children, and young children. We searched MEDLINE, EMBASE, and CENTRAL databases and key conference abstracts. Sustained virological response 12 weeks after the end of treatment (SVR12), adverse events (AEs), and treatment discontinuation were the outcomes evaluated. Risk of bias was assessed using a modified version of the ROBINS-I tool. Data were pooled using random-effects models, and certainty of the evidence was assessed using the GRADE approach.
    RESULTS: A total of 49 studies including 1882 adolescents, 436 older children, and 166 young children were considered. The SVR12 was 100% (95% Confidence Interval: 96-100), 96% (90-100), and 96% (83-100) for GLE/PIB in adolescents, older, and young children, respectively; 95% (90-99), 93% (86-98), and 83% (70-93), for SOF/VEL, respectively; and 100% (97-100) and 100% (94-100) for SOF/DCV in adolescent and older children, respectively. There was a clear trend towards a higher rate of any reported AE from adolescents (50%), older children (53%), to young children (72%). Serious AEs and treatment discontinuations were uncommon in adolescents and older children (<1%) but slightly higher in young children (3%).
    CONCLUSIONS: All three pan-genotypic DAA regimens were highly effective and well-tolerated and are now recommended by the WHO for use in adults, adolescents, and children down to 3 years, which will simplify procurement and supply chain management. The evidence was based largely on single-arm non-randomized controlled studies. Moreover, there were also missing data regarding key variables such as route of HCV acquisition, presence or absence of cirrhosis, or HIV co-infection that precluded evaluation of the impact of these factors on outcomes.
    UNASSIGNED: CRD42020146752.
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  • 文章类型: Meta-Analysis
    本研究旨在探讨膳食支链氨基酸(BCAAs)及其组分与癌症的关系。癌症死亡率,观察性研究的荟萃分析和全因死亡率。在电子数据库(PubMed,Scopus,和WebofScience),直到2022年9月。赔率比(OR),危险比(HR),提取相对风险(RR)。八篇文章(关于乳腺癌(BC)和消化系统癌症风险的六项研究,和三项关于BC和消化系统癌症死亡率的研究,和全因死亡率)被包括在内。本研究显示,饮食BCAAs及其成分与BC和消化道癌症之间没有统计学上的显着关联(RRBCAA:0.87,95%CI:0.68-1.10,RR亮氨酸:0.74,95%CI:0.52-1.04,RR异亮氨酸:0.98,95%CI:0.93-1.04,RRValine:0.76,95%CI:0.55-1.05)。此外,饮食BCAAs及其成分与BC和消化系统癌症死亡率之间没有统计学上的显着关系(RRBCAA:0.95,95%CI:0.68-1.33,RRLeucine:0.95,95%CI:0.79-1.15,RRiseucine:0.95,95%CI:0.79-1.14,RValine:1.01,95%CI:0.84-1.21,所有原因RucCI:0.73,R我们的研究结果表明,膳食BCAAs及其成分与BC和消化道癌症之间没有显着关联。BC和消化系统癌症死亡率,和全因死亡率。
    The present study aimed to investigate the association of dietary branched-chain amino acids (BCAAs) and its components with cancer, cancer mortality, and all-cause mortality in a meta-analysis of observational studies. A comprehensive search was conducted between electronic databases (PubMed, Scopus, and Web of Science) until September 2022. Odds ratios (OR), hazard ratios (HR), and relative risks (RR) were extracted. Eight articles (six studies on breast cancer (BC) and digestive cancers risk, and three studies on both BC and digestive cancers mortality, and all-cause mortality) were included. The present study showed no statistically significant association between dietary BCAAs and its components with BC and digestive cancers (RRBCAA: 0.87, 95% CI: 0.68-1.10, RRLeucine: 0.74, 95% CI: 0.52-1.04, RRIsoleucine: 0.98, 95% CI: 0.93-1.04, RRValine: 0.76, 95% CI: 0.55-1.05). Also, no statistically significant relationship between dietary BCAAs and its components with both BC and digestive cancers mortality (RRBCAA: 0.95, 95% CI: 0.68-1.33, RRLeucine: 0.95, 95% CI: 0.79-1.15, RRIsoleucine: 0.95, 95% CI: 0.79-1.14, RRValine: 1.01, 95% CI: 0.84-1.21) and all-cause mortality (RRBCAA: 0.98, 95% CI: 0.73-1.32, RRLeucine: 1.02, 95% CI: 0.81-1.29, RRIsoleucine: 0.96, 95% CI: 0.73-1.27, RRValine: 1.02, 95% CI: 0.79-1.32) were observed. Our findings showed no significant association between dietary BCAAs and its components with BC and digestive cancers, BC and digestive cancers mortality, and all-cause mortality.
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  • 文章类型: Meta-Analysis
    最近,血清支链氨基酸(BCAAs)水平已被认为是评估健康状况和预测慢性病风险的指标。本系统评价和荟萃分析旨在评估血清BCAAs与全因死亡风险之间的关系。我们对各种重要数据库进行了全面系统的检索,包括PubMed,Scopus,和WebofScience数据库查找截至2022年10月发表的相关研究,没有语言,设计,或时间限制。我们在队列和病例对照研究中提取了95%置信区间(CI)的报告风险比(HR)和95%CI的比值比(OR)。分别,并计算对数HR或OR及其标准误差。然后,我们使用随机效应模型与方差反加权方法进行了本荟萃分析,来计算合并效应的大小。十项观察性研究,包括9项队列研究和1项病例对照研究,被纳入本荟萃分析。参与者人数从53到26,711不等,年龄范围为18-99岁。在6个月至24年的随访期间,已确定3599人死亡。汇总结果表明,血清BCAAs之间没有显着关联(RR:1.17;95%CI0.85-1.60),异亮氨酸(RR:1.41;95CI0.92-2.17),亮氨酸(RR:1.13;95%CI0.94-1.36),和缬氨酸(RR:1.02;95CI0.86-1.22)和全因死亡率。此外,血清BCAAs研究之间存在显着异质性(I2=74.1%,P异质性=0.021),异亮氨酸(I2=89.4%,P异质性<0.001),亮氨酸(I2=87.8%,P异质性<0.001),和缬氨酸(I2=86.6%,P异质性<0.001)。我们的结果表明,血清BCAAs及其成分,包括异亮氨酸,亮氨酸,和缬氨酸,与全因死亡风险无关.
    Recently, the serum levels of branched-chain amino acids (BCAAs) have been considered as an indicator to evaluate health status and predict chronic diseases risk. This systematic review and meta-analysis aimed to assess the relationship between Serum BCAAs and the risk of all-cause mortality. We carried out a comprehensive and systematic search in various important databases, including PubMed, Scopus, and Web of Science databases to find the relevant studies published up to October 2022 with no language, design, or time limitation. We extracted the reported hazard ratio (HR) with 95% confidence interval (CI) and odds ratio (OR) with 95%CI in cohorts and case-control studies, respectively, and computed the log HR or OR and its standard error. Then, we used the random-effects model with inverse variance weighting method for the present meta-analysis, to calculate the pooled effect size. Ten observational studies, including nine cohort studies and one case-control study, were included in the present meta-analysis. The number of participants ranges from 53 to 26,711, with an age range of 18-99 years. During 6 months to 24 years of follow-up, 3599 deaths were ascertained. The pooled results indicated that there was no significant association between serum BCAAs (RR: 1.17; 95% CI 0.85-1.60), isoleucine (RR: 1.41; 95%CI 0.92-2.17), leucine (RR: 1.13; 95% CI 0.94-1.36), and valine (RR: 1.02; 95%CI 0.86-1.22) and all-cause mortality. Also, there was significant heterogeneity between studies for serum BCAAs (I2 = 74.1% and P-heterogeneity = 0.021), isoleucine (I2 = 89.4% and P-heterogeneity < 0.001), leucine (I2 = 87.8% and P-heterogeneity < 0.001), and valine (I2 = 86.6% and P-heterogeneity < 0.001). Our results suggested that the serum BCAAs and its components, including isoleucine, leucine, and valine, were not associated with the risk of all-cause mortality.
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  • 文章类型: Meta-Analysis
    这项研究旨在评估单药联合(SPC)抗高血压药物在未控制的原发性高血压患者中的疗效。通过搜索Pubmed,EMBASE,Cochrane图书馆,和WebofScience仅收集了关于单药联合抗高血压药物在未控制的原发性高血压患者中的疗效的随机对照试验。检索期从数据库建立到2022年7月。纳入研究的方法学质量采用Cochrane偏差风险评估,使用ReviewManage5.3和Stata15.1软件进行统计分析。这篇综述最终纳入了32篇参考文献,涉及16273例未控制的原发性高血压患者。网络荟萃分析结果显示,共纳入11种单药联合降压药,即:氨氯地平/缬沙坦,替米沙坦/氨氯地平,氯沙坦/HCTZ,坎地沙坦/HCTZ,氨氯地平/贝那普利,替米沙坦/HCTZ,缬沙坦/HCTZ,厄贝沙坦/氨氯地平,氨氯地平/氯沙坦,厄贝沙坦/HCTZ,和培多普利/氨氯地平。根据SUCRA,厄贝沙坦/氨氯地平可在降低收缩压方面排名第一(SUCRA:92.2%);氨氯地平/氯沙坦可在降低舒张压方面排名第一(SUCRA:95.1%);替米沙坦/氨氯地平可在血压控制率方面排名第一(SUCRA:83.5%);氨氯地平/氯沙坦可在舒张反应率方面排名第一(SUCRA:84.5%)。基于网络的排名图,我们可以得出结论,单药联合降压药优于单药治疗,ARB/CCB组合在收缩压方面比其他SPC具有更好的优势,舒张压,血压控制率,和舒张反应率。然而,由于一些药物研究的数量很少,缺乏相关研究导致没有被纳入这项研究,这可能会影响结果,读者应谨慎解释结果。
    This study aimed to evaluate the efficacy of single-pill combination (SPC) antihypertensive drugs in patients with uncontrolled essential hypertension. Through Searching Pubmed, EMBASE, the Cochrane Library, and Web of Science collected only randomized controlled trials on the efficacy of single-pill combination antihypertensive drugs in people with uncontrolled essential hypertension. The search period is from the establishment of the database to July 2022. The methodological quality of the included studies was assessed using the Cochrane Risk of Bias Assessment, and statistical analyses were performed using Review Manage 5.3 and Stata 15.1 software. This review ultimately included 32 references involving 16 273 patients with uncontrolled essential hypertension. The results of the network meta-analysis showed that a total of 11 single-pill combination antihypertensive drugs were included, namely: Amlodipine/valsartan, Telmisartan/amlodipine, Losartan/HCTZ, Candesartan/HCTZ, Amlodipine/benazepril, Telmisartan/HCTZ, Valsartan/HCTZ, Irbesartan/amlodipine, Amlodipine/losartan, Irbesartan/HCTZ, and Perindopril/amlodipine. According to SUCRA, Irbesartan/amlodipine may rank first in reducing systolic blood pressure (SUCRA: 92.2%); Amlodipine/losartan may rank first in reducing diastolic blood pressure (SUCRA: 95.1%); Telmisartan/amlodipine may rank first in blood pressure control rates (SUCRA: 83.5%); Amlodipine/losartan probably ranks first in diastolic response rate (SUCRA: 84.5%). Based on Ranking Plot of the Network, we can conclude that single-pill combination antihypertensive drugs are superior to monotherapy, and ARB/CCB combination has better advantages than other SPC in terms of systolic blood pressure, diastolic blood pressure, blood pressure control rate, and diastolic response rate. However, due to the small number of some drug studies, the lack of relevant studies has led to not being included in this study, which may impact the results, and readers should interpret the results with caution.
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  • 文章类型: Meta-Analysis
    背景:最近的研究得出结论,循环支链氨基酸(BCAA)升高与2型糖尿病(T2DM)和肥胖的发病机制有关。然而,这种关联随时间的发展以及在T2DM诊断之前对个体BCAA的这种关联强度的量化仍未被探索.
    方法:通过美国国家健康与护理卓越研究所(NICE)网站,使用医疗保健数据库高级搜索(HDAS)进行了系统搜索。数据源包括EMBASE,MEDLINE和PubMed从成立到2021年11月的所有论文。在这项系统评价和荟萃分析中确定了9项研究。根据随访时间(0-6、6-12和12年或更长时间)进行分层,并通过对超重队列的特定评估来控制体重指数(BMI)。
    结果:荟萃分析显示,BCAA浓度与T2DM的发展之间存在统计学上显著的正相关,缬氨酸OR=2.08(95%CI=2.04-2.12,p<0.00001),亮氨酸OR=2.25(95%CI=1.76~2.87,p<0.00001),异亮氨酸OR=2.12,95%CI=2.00~2.25,p<0.00001。此外,我们证明了循环BCAA水平与2型糖尿病发病风险之间存在着一致的正相关,在0-6年的随访时间内存在差异,缬氨酸随访6-12年和≥12年(OR=2.08、1.86和2.14,p<0.05),显示亮氨酸(OR分别为2.10、2.25和2.16,p&lt;0.05)和异亮氨酸(OR分别为2.12、1.90和2.16,p&lt;0.05)。
    结论:血浆BCAA浓度与所有时间亚组的T2DM发病率相关。我们建议BCAAs作为T2DM的早期生物标志物的潜在用途,无论随访时间如何。
    Introduction: Recent studies have concluded that elevated circulating branched chain amino acids (BCAA) are associated with the pathogenesis of type 2 diabetes mellitus (T2DM) and obesity. However, the development of this association over time and the quantification of the strength of this association for individual BCAAs prior to T2DM diagnosis remains unexplored. Methods: A systematic search was conducted using the Healthcare Databases Advance Search (HDAS) via the National Institute for Health and Care Excellence (NICE) website. The data sources included EMBASE, MEDLINE and PubMed for all papers from inception until November 2021. Nine studies were identified in this systematic review and meta-analysis. Stratification was based on follow-up times (0−6, 6−12 and 12 or more years) and controlling of body mass index (BMI) through the specific assessment of overweight cohorts was also undertaken. Results: The meta-analysis revealed a statistically significant positive association between BCAA concentrations and the development of T2DM, with valine OR = 2.08 (95% CI = 2.04−2.12, p < 0.00001), leucine OR = 2.25 (95% CI = 1.76−2.87, p < 0.00001) and isoleucine OR = 2.12, 95% CI = 2.00−2.25, p < 0.00001. In addition, we demonstrated a positive consistent temporal association between circulating BCAA levels and the risk of developing T2DM with differentials in the respective follow-up times of 0−6 years, 6−12 years and ≥12 years follow-up for valine (OR = 2.08, 1.86 and 2.14, p < 0.05 each), leucine (OR = 2.10, 2.25 and 2.16, p < 0.05 each) and isoleucine (OR = 2.12, 1.90 and 2.16, p < 0.05 each) demonstrated. Conclusion: Plasma BCAA concentrations are associated with T2DM incidence across all temporal subgroups. We suggest the potential utility of BCAAs as an early biomarker for T2DM irrespective of follow-up time.
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  • 文章类型: Systematic Review
    牙周炎是由遗传学和表观遗传学之间复杂的相互作用引起的,微生物因素,和主机响应。代谢组学分析反映了细胞或生物体的稳态生理平衡以及它们对环境刺激的动态代谢反应。
    这篇文献系统综述旨在评估与牙龈炎或牙周健康个体相比,哪些低分子量代谢物更常见于牙周炎个体的生物体液中。
    所有纳入的研究均采用非目标分析。分析了一种或多种生物流体,包括唾液(n=14),龈沟液(n=6),漱口水(n=1),血清(n=3)和血浆(n=1)。在至少两项独立研究中,通过NMR光谱或基于MS的代谢组学已鉴定出56种与牙周炎相关的主要代谢物。唾液是采样的主要生物流体。值得注意的是,在对唾液取样的所有研究中,检测到的56种代谢物中的14种被鉴定为主要代谢物。在研究中一致发现的大多数代谢物是氨基酸,有机酸和衍生物:乙酸,丙氨酸,丁酸盐,甲酸盐,GABA,乳酸,丙酸盐,苯丙氨酸和缬氨酸。它们在研究中被上调或下调,或者没有提到这些信息。主要代谢途径与苯丙氨酸有关,酪氨酸和色氨酸生物合成。在牙周炎患者中更常见的代谢物与宿主和微生物反应有关。需要未来的研究,他们应该遵循一些方法标准,以方便他们的比较。
    Periodontitis is resulted from a complex interaction between genetics and epigenetics, microbial factors, and the host response. Metabolomics analyses reflect both the steady-state physiological equilibrium of cells or organisms as well as their dynamic metabolic responses to environmental stimuli.
    This systematic review of the literature aimed to assess which low molecular weight metabolites are more often found in biological fluids of individuals with periodontitis compared to individuals with gingivitis or periodontal health.
    All the included studies employed untargeted analysis. One or more biological fluids were analyzed, including saliva (n = 14), gingival crevicular fluid (n = 6), mouthwash (n = 1), serum (n = 3) and plasma (n = 1). Fifty-six main metabolites related to periodontitis have been identified in at least two independent studies by NMR spectroscopy or MS-based metabolomics. Saliva was the main biological fluid sampled. It is noteworthy that 14 metabolites of the 56 detected were identified as main metabolites in all studies that sampled the saliva. The majority of metabolites found consistently among studies were amino acids, organic acids and derivates: acetate, alanine, butyrate, formate, GABA, lactate, propionate, phenylalanine and valine. They were either up- or down-regulated in the studies or this information was not mentioned. The main metabolic pathway was related to phenylalanine, tyrosine and tryptophan biosynthesis. Metabolites more frequently found in individuals with periodontitis were related to both the host and to microorganism responses. Future studies are needed, and they should follow some methodological standards to facilitate their comparison.
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  • 文章类型: Journal Article
    这项研究调查了索非布韦/达拉他韦(SOF-DCV)在COVID-19患者中的临床疗效。
    PubMed,OvidMEDLINE,Embase,Cochrane中央控制试验登记册,和ClinicalTrials.gov数据库搜索2022年1月6日之前撰写的相关文章。仅包括比较SOF-DCV(研究组)与替代治疗(对照组)在COVID-19患者中的临床疗效的随机对照试验(RCT)。
    共包括9项RCT。研究组全因死亡率为10.7%(96/898),低于对照组(12.3%,108/871)。然而,这一差异无统计学意义(比值比[OR]=0.83;95%CI,0.62-1.12;I2=49%).研究组临床总恢复率明显高于对照组(OR=2.34;95%CI,1.47~3.72;I2=20%)。此外,研究组的平均住院时间短于对照组(平均偏差=-1.84;95%CI,-3.42~-0.26,I2=68%).
    尽管SOF-DCV并未为COVID-19患者带来生存益处,但它可能会增加患者临床康复的几率,缩短他们的住院时间。
    UNASSIGNED: This study investigated the clinical efficacy sofosbuvir/daclatasvir (SOF-DCV) in patients with COVID-19.
    UNASSIGNED: PubMed, Ovid MEDLINE, Embase, Cochrane Central Register of Controlled Trials, and ClinicalTrials.gov databases were searched for relevant articles written before January 6, 2022. Only randomized controlled trials (RCTs) comparing the clinical efficacy of SOF-DCV (study group) with alternative treatments (control group) in patients with COVID-19 were included.
    UNASSIGNED: A total of 9 RCTs were included. The all-cause mortality rate in the study group was 10.7% (96/898), which was lower than that in the control group (12.3%, 108/871). However, this difference was not statistically significant (odds ratio [OR] = 0.83; 95% CI, 0.62-1.12; I2 = 49%). The overall clinical recovery rate was significantly higher in the study group than in the control group (OR = 2.34; 95% CI, 1.47-3.72; I2 = 20%). Furthermore, the average length of hospital stay was shorter in the study group than in the control group (mean deviation = -1.84; 95% CI, -3.42 to -0.26, I2 = 68%).
    UNASSIGNED: Although SOF-DCV did not confer a survival benefit in patients with COVID-19, it may increase a patient\'s odds of clinical recovery, and shorten the length of their hospital stay.
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  • 文章类型: Journal Article
    我们进行了系统评价,包括非前瞻性和前瞻性临床研究的荟萃分析,以评估循环支链氨基酸(BCAA)的作用。包括异亮氨酸,缬氨酸和亮氨酸,心血管疾病(CVD)风险。
    PubMed,Embase,在Cochrane和CNKI数据库中搜索了报告BCAA与CVD之间关系的出版物。提取相对危险度(RR)和奇数比(OR)并合并。进行亚组分析和荟萃回归以确定异质性的潜在来源,我们进行了敏感性分析,以评估合并估计值的稳健性.
    11项涉及2806名参与者的非前瞻性研究和10项涉及43,895名参与者的前瞻性研究报告了BCAAs与CVD风险之间的相关性。与对照组相比,心血管疾病患者的循环BCAA水平发生了变化。对9项前瞻性研究进行了荟萃分析,并强调了异亮氨酸每个研究特定SD差异的CVD风险高10%(合并相对风险1.10[1.03-1.18];I2=63.5%)。缬氨酸和亮氨酸似乎与CVD发病无关。基于年龄的亚组分析表明,在≤60岁的成年人中,有15%,13%,根据研究特异性SD差异,异亮氨酸发生CVD的风险增加9%(RR1.15[1.11-1.19];I2=0.0%),缬氨酸(RR1.13[1.09-1.17];I2=0.0%),和亮氨酸(RR1.09[1.03-1.16];I2=40.5%),分别。60岁以上的成年人没有观察到这种关联。
    有证据表明,循环中的异亮氨酸浓度升高与CVD风险增加有关。独立于传统风险因素。
    We conducted a systematic review with meta-analysis of non-prospective and prospective clinical studies to assess the effects of circulating branched-chain amino acids (BCAA), including Isoleucine, Valine and Leucine, on cardiovascular disease (CVD) risk.
    PubMed, Embase, Cochrane and CNKI databases were searched for publications reporting the relationship between BCAAs and CVD. Relative risk (RR) and odd ratios (OR) were extracted and pooled. Subgroup analysis and meta-regression were performed to identify potential sources of heterogeneity, sensitivity analysis was conducted to assess the robustness of pooled estimates.
    11 non-prospective studies involving 2806 participants and 10 prospective studies involving 43,895 participants reported correlations between BCAAs and CVD risk. Levels of circulating BCAAs changed in individuals with CVD compared with those in the control group. Nine prospective studies were meta-analyzed and highlighted a 10% higher risk of CVD per study-specific SD difference for Isoleucine (pooled relative risk 1.10 [1.03-1.18]; I2 = 63.5%). Valine and Leucine do not appear to be associated with CVD incidence. Subgroup analysis based on age suggested that among adults ≤60 years, there is a 15%, 13%, and 9% higher risk of developing CVD per study-specific SD difference for Isoleucine (RR 1.15 [1.11-1.19]; I2 = 0.0%), Valine (RR 1.13 [1.09-1.17]; I2 = 0.0%), and Leucine (RR 1.09 [1.03-1.16]; I2 = 40.5%), respectively. No such associations were observed for adults older than 60 years.
    Evidence suggests that elevated concentrations of circulating Isoleucine were associated with increased risks of CVD, independent of traditional risk factors.
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