Drug Combinations

药物组合
  • 文章类型: Journal Article
    这项荟萃分析旨在评估牙髓切除术治疗龋齿牙髓暴露的成功率,并比较不同盖帽材料的疗效。在PubMed中搜索了随机对照试验,EMBASE,WebofScience,临床试验.gov,和科克伦图书馆,直到2023年8月31日。在总体人群和亚组中估计合并成功率。使用比值比(OR)和95%置信区间(95CI)对不同的封顶材料进行了其他分析。使用分级方法对证据的确定性进行分级。最终纳入25项平均随访时间≥12个月的随机试验。牙髓切除术的总成功率为86.7%(95CI:82.0~90.7%)。成功率受根系发育影响不显著,牙髓切除术类型,和后续持续时间。与正常牙髓或可逆性牙髓炎的牙齿相比,不可逆牙髓炎的牙齿成功率相对较低(82.4%[95CI:74.6-89.0%]vs92.0%[95CI:87.9-95.4%],P=0.013)。与传统的氢氧化钙相比,三氧化矿物骨料(88.2%对79.1%,OR=2.41,95CI:1.28-4.51,P=0.006)和生物牙本质(97.5%vs82.9%,OR=6.03,95CI:0.97-37.6,P=0.054)的成功率较高。MTA和其他生物材料之间没有发现显着差异。结果被分级为证据的极低到低确定性。总之,牙髓切除术是龋齿牙髓暴露的有效治疗方法。可以推荐矿物三氧化物聚集体和Biodentine作为封盖材料具有更有利的结果。
    This meta-analysis aims to assess the success rate of pulpotomy in the treatment of permanent teeth with carious pulp exposure and to compare the efficacy of different capping materials. Randomized controlled trials were searched in PubMed, EMBASE, Web of Science, Clinicaltrial.gov, and Cochrane Library until August 31, 2023. The pooled success rate was estimated in the overall population and in subgroups. Additional analyses comparing different capping materials using odds ratio (OR) and 95% confidence interval (95%CI) were performed. The certainty of evidence was graded using the GRADE approach. A total of 25 randomized trials with an average follow-up duration ≥ 12 months were finally included. The overall success rate of pulpotomy was 86.7% (95%CI: 82.0-90.7%). The success rate was not significantly affected by root development, pulpotomy type, and follow-up duration. Teeth with irreversible pulpitis had a relatively lower success rate than teeth with normal pulp or reversible pulpitis (82.4% [95%CI: 74.6-89.0%] vs 92.0% [95%CI: 87.9-95.4%], P = 0.013). Directly compared to conventional calcium hydroxide, mineral trioxide aggregate (88.2% vs 79.1%, OR = 2.41, 95%CI: 1.28-4.51, P = 0.006) and Biodentine (97.5% vs 82.9%, OR = 6.03, 95%CI: 0.97-37.6, P = 0.054) had higher successful rates. No significant difference between MTA and other biomaterials was found. The results were graded as very low to low certainty of evidence. In conclusion, pulpotomy is an effective treatment of permanent teeth with carious pulp exposure. Mineral trioxide aggregate and Biodentine can be recommended with more favorable outcomes as capping materials.
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  • 文章类型: Systematic Review
    目的:阐明决定因龋齿而暴露于牙髓的恒牙直接盖髓(DPC)成功的因素。
    方法:1980年至2023年在PubMed进行的全面电子搜索,Scopus,ISIWeb数据库使用Q1或Q2期刊中的特定关键字和MeSH术语进行。只有15颗或更多的人恒牙用DPC剂-矿物三氧化物聚集体(MTA)治疗,用龋齿牙髓暴露的前瞻性/回顾性英文临床研究,Biodentine,或氢氧化钙与橡胶坝和至少1年的后续行动,被考虑。检索和分析的因素是基于研究设计,患者年龄,样本量,腔的类型,曝光尺寸和位置,牙髓诊断,实现止血的解决方案,止血时间,封盖材料,恢复类型,随访期,评价方法,全面的成功。
    结果:在680篇文章中,只有16篇文章被选择用于本选择标准应用的系统评价.在这些研究中,考虑了年龄从6至88岁的患者,样本量从15至245颗牙齿不等,可逆性牙髓炎是这些病例的主要诊断。在4项研究中评估了作为封顶材料的矿物三氧化物骨料作为孤剂,在7项研究中与其他封端剂如生物牙本质或氢氧化钙进行了比较。随访期为9天至近80个月。虽然在所有研究中都进行了临床和影像学评估,冷测试在临床测试中占主导地位,而IOPR是考虑的常见X线照片.与氢氧化钙相比,三氧化物矿物聚集体的成功率更高,并且与生物牙本质相似。
    结论:直接盖髓在龋齿暴露于可逆和不可逆牙髓炎的恒牙中具有较高且可预测的成功率。目前,矿物三氧化物聚集体和生物牙本质在DPC中的长期效果优于氢氧化钙,因此,它们应用作氢氧化钙的替代品。短期内明确恢复可改善长期预后。
    结论:本综述的意义在于它提供了有关DPC有效性的循证信息以及影响其成功的因素。考虑到这些因素,临床医生可以优化治疗结果并改善治疗牙齿的长期预后。本系统综述为牙髓学领域的临床医生和研究人员提供了宝贵的资源。如何引用这篇文章:Gomez-SosaJF,Granone-RicellaM,Rosciano-AlvarezM,etal.直接制浆成功的决定因素:系统评价。JContempDentPract2024;25(4):392-401。
    OBJECTIVE: To elucidate the factors that determine the success of direct pulp capping (DPC) in permanent teeth with pulp exposure due to dental caries.
    METHODS: A comprehensive electronic search from 1980 to 2023 across PubMed, Scopus, and ISI Web databases was conducted using specific keywords and MeSH terms in Q1 or Q2 journals. Only prospective/retrospective clinical studies in English on 15 or more human permanent teeth with carious pulpal exposure treated with DPC agents-mineral trioxide aggregate (MTA), Biodentine, or calcium hydroxide with a rubber dam and minimum 1-year follow-up, were considered. The factors retrieved and analyzed were based on study design, patient age, sample size, type of cavity, exposure size and location, pulp diagnosis, solutions to achieve hemostasis, hemostasis time, capping material, restoration type, follow-up period, methods of evaluation, and overall success.
    RESULTS: Out of 680 articles, only 16 articles were selected for the present systematic review on application of the selection criteria. A wide age range of patients from 6 to 88 years were considered among these studies with sample sizes ranging from 15 to 245 teeth with reversible pulpitis being the predominant diagnosis of the cases. Mineral trioxide aggregate as a capping material was evaluated in 4 studies as a lone agent, while compared with other capping agents such as biodentine or calcium hydroxide in 7 studies. The follow-up period ranged from 9 days to nearly 80 months. While both clinical and radiographic evaluation was carried out in all studies, cold testing dominated the clinical tests while IOPR was the common radiograph considered. Mineral trioxide aggregate success rate was higher and similar to biodentine than calcium hydroxide.
    CONCLUSIONS: Direct pulp capping has a high and predictable success rate in permanent teeth with carious exposure to reversible and irreversible pulpitis. Currently, mineral trioxide aggregate and biodentine have better long-term results in DPC than calcium hydroxide, hence, they should be used as an alternative to calcium hydroxide. Definitive restoration within a short period improves long-term prognosis.
    CONCLUSIONS: The significance of this review lies in its provision of evidence-based information on the effectiveness of DPC and the factors that influence its success. By considering these factors, clinicians can optimize treatment outcomes and improve the long-term prognosis of the treated teeth. This systematic review serves as a valuable resource for clinicians and researchers in the field of endodontics. How to cite this article: Gomez-Sosa JF, Granone-Ricella M, Rosciano-Alvarez M, et al. Determining Factors in the Success of Direct Pulp Capping: A Systematic Review. J Contemp Dent Pract 2024;25(4):392-401.
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  • 文章类型: Case Reports
    背景技术用于管理坏死的未成熟恒牙的再生牙髓手术(REP)相对于传统使用的根尖化技术具有促进牙根生长的优点。然而,对未成熟磨牙进行标准化REP的长期结局证据有限.此病例报告介绍了在未成熟的下颌第一磨牙上进行REP的5年临床和影像学结果。病例报告一名患有龋齿的右下颌第一磨牙的健康7岁女孩被转诊到牙髓诊所进行评估和治疗。临床检查显示巨大的咬合龋齿,触诊和敲击试验无压痛,对冷和电纸浆测试没有反应。射线照相检查显示有很深的龋齿,与开放顶点相关的顶端射线可透性,和广泛的根管空间。因此,牙齿被诊断为坏死牙髓和无症状根尖周炎。REP是根据美国牙髓学会指南进行的,其中包括最少的仪器,用次氯酸钠冲洗剂消毒,使用三重抗生素糊剂,诱导肛内出血,日冕矿物三氧化物骨料塞的应用。患者错过了预定的随访预约,但5年后在诊所就诊,无症状牙齿。临床和影像学检查显示敲击和触诊试验无压痛,对冷测试没有反应,对电浆测试的积极响应,根尖愈合,顶端闭合,根延长,管壁增厚和钙化。结论虽然真浆再生是无法实现的,REP,按照当前的协议,在临床上成功实现牙根成熟和牙齿保留。
    BACKGROUND The regenerative endodontic procedure (REP) for managing necrotic immature permanent teeth has the advantage of promoting root growth over the traditionally used apexification techniques. However, there is limited evidence on the long-term outcome of standardized REPs performed on immature molars. This case report presents the 5-year clinical and radiographic outcomes of REP performed on an immature mandibular first molar. CASE REPORT A healthy 7-year-old girl with a carious right mandibular first molar was referred to the endodontic clinic for evaluation and treatment. Clinical examination showed large occlusal caries, no tenderness to palpation and percussion tests, and no response to cold and electric pulp tests. Radiographic examination showed deep caries, apical radiolucency related to the open apices, and wide root canal space. Accordingly, the tooth was diagnosed with necrotic pulp and asymptomatic apical periodontitis. The REP was performed following the American Association of Endodontics guidelines, which comprise minimal instrumentation, disinfection with sodium hypochlorite irrigant, use of triple antibiotic paste, induced intracanal bleeding, and application of a coronal mineral trioxide aggregate plug. The patient missed the scheduled follow-up appointments but presented at the clinic 5 years later with an asymptomatic tooth. Clinical and radiographic examination revealed no tenderness to percussion and palpation test, no response to cold test, positive response to electric pulp test, apical healing, apical closure, root lengthening, and canal wall thickening and calcification. CONCLUSIONS While true pulp regeneration is unachievable, the REP, following the current protocol, is clinically successful in achieving root maturation and tooth retention.
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  • 文章类型: Journal Article
    由于它们能够通过细胞相互作用复制体内微环境并诱导细胞刺激细胞功能,三维细胞培养模型可以克服二维模型的局限性。类器官是3D模型,展示了复制器官自然结构的能力。在大多数类器官组织培养中,由小鼠肿瘤细胞外基质蛋白混合物制成的基质胶是必需成分。然而,它的肿瘤来源,批次到批次的变化,高成本,和安全性问题限制了类器官药物开发和再生医学的有用性。它的临床应用也受到以下事实的阻碍:类器官的产生依赖于使用不清楚定义的基质。因此,基质优化是开发类器官培养的关键步骤,它将替代品引入不同的材料。最近,据报道,各种替代材料已经取代了基质胶。这项研究的目的是回顾细胞培养应用材料的最新进展的意义,以及它们如何通过产生适当的细胞行为来增强网络系统的构建。从细胞特性评估细胞行为的卓越,细胞增殖,细胞分化,甚至基因表达。因此,氧化石墨烯作为基质优化在开发类器官模型中表现出很高的效力。氧化石墨烯可以促进良好的细胞行为,并且众所周知具有良好的生物相容性。因此,氧化石墨烯矩阵优化的进展为未来开发先进的类器官模型提供了机会。
    Due to their ability to replicate the in vivo microenvironment through cell interaction and induce cells to stimulate cell function, three-dimensional cell culture models can overcome the limitations of two-dimensional models. Organoids are 3D models that demonstrate the ability to replicate the natural structure of an organ. In most organoid tissue cultures, matrigel made of a mouse tumor extracellular matrix protein mixture is an essential ingredient. However, its tumor-derived origin, batch-to-batch variation, high cost, and safety concerns have limited the usefulness of organoid drug development and regenerative medicine. Its clinical application has also been hindered by the fact that organoid generation is dependent on the use of poorly defined matrices. Therefore, matrix optimization is a crucial step in developing organoid culture that introduces alternatives as different materials. Recently, a variety of substitute materials has reportedly replaced matrigel. The purpose of this study is to review the significance of the latest advances in materials for cell culture applications and how they enhance build network systems by generating proper cell behavior. Excellence in cell behavior is evaluated from their cell characteristics, cell proliferation, cell differentiation, and even gene expression. As a result, graphene oxide as a matrix optimization demonstrated high potency in developing organoid models. Graphene oxide can promote good cell behavior and is well known for having good biocompatibility. Hence, advances in matrix optimization of graphene oxide provide opportunities for the future development of advanced organoid models.
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  • 文章类型: Journal Article
    根据全球哮喘倡议(GINA)指南,长效毒蕈碱拮抗剂(LAMA)应用于尽管采用中剂量(MD)或大剂量(HD)吸入性糖皮质激素(ICS)/长效β2受体激动剂(LABA)联合治疗仍未得到控制的哮喘患者,应将其视为附加治疗.在≥18岁的患者中,LAMA可以与ICS和LABA三重组合添加。迄今为止,对于未控制的哮喘患者,ICS/LABA/LAMA三联疗法对急性加重风险的影响仍不确定.因此,我们进行了一项综述,以系统总结现有的有关ICS/LABA/LAMA三联用药对哮喘加重风险影响的数据.
    已根据先前的声明进行了总括审查。
    从5项系统评价和荟萃分析获得的总体结果表明,ICS/LABA/LAMA三联疗法可降低哮喘加重的风险。HD-ICS显示出更大的效果,特别是在减少严重的哮喘恶化,尤其是有2型炎症生物标志物证据的患者。
    这项综述的结果表明,ICS/LABA/LAMA三联组合中ICS剂量的优化,基于加重的严重程度和2型生物标志物的表达。
    UNASSIGNED: According to Global Initiative for Asthma (GINA) guidelines, long-acting muscarinic antagonists (LAMAs) should be considered as add-on therapy in patients with asthma that remains uncontrolled, despite treatment with medium-dose (MD) or high-dose (HD) inhaled corticosteroids (ICS)/long-acting β2-agonist (LABA) combinations. In patients ≥ 18 years, LAMA may be added in triple combination with an ICS and a LABA. To date, the precise efficacy of triple ICS/LABA/LAMA combination remains uncertain concerning the impact on exacerbation risk in patients with uncontrolled asthma. Therefore, an umbrella review was performed to systematically summarize available data on the effect of triple ICS/LABA/LAMA combination on the risk of asthma exacerbation.
    UNASSIGNED: An umbrella review has been performed according to the PRIOR statement.
    UNASSIGNED: The overall results obtained from 5 systematic reviews and meta-analyses suggest that triple ICS/LABA/LAMA combination reduces the risk of asthma exacerbation. HD-ICS showed a greater effect particularly in reducing severe asthma exacerbation, especially in patients with evidence of type 2 inflammation biomarkers.
    UNASSIGNED: The findings of this umbrella review suggest an optimization of ICS dose in triple ICS/LABA/LAMA combination, based on the severity of exacerbation and type 2 biomarkers expression.
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  • 文章类型: Journal Article
    目的:本研究旨在评估基础胰岛素和胰高血糖素样肽-1受体激动剂(GLP-1RA)的固定比例组合(FRC)和自由组合在2型糖尿病(T2DM)患者中的安全性和有效性。
    方法:PubMed,WebofScience,Embase,科克伦图书馆,从开始到2023年4月13日,搜索了四个中国数据库进行相关研究。包括在未控制的T2DM患者中涉及FRC或自由组合的III期临床试验。网络荟萃分析(NMA)用于评估FRC和自由组合的效果。Cochrane协作工具用于评估偏倚风险。主要结果是血红蛋白A1c(HbA1c)的变化,体重,和低血糖事件。次要结果包括收缩压(SBP)和舒张压(DBP)的变化。本研究在PROSPERO(CRD42023409585)注册。
    结果:包括23,619名患者的42项试验被纳入NMA,治疗被归类为FRC,自由组合和NOINSGLP(既不是FRC也不是自由组合)。森林地块显示出可比的HbA1c控制(平均差(MD)=0.07%,自由组合和FRC之间的95%置信区间(CI):-0.17至-0.30)。然而,体重存在显着差异(MD=-2.06kg;95%CI:-3.34至-0.77),收缩压(MD=-1.22mmHg;95%CI:-2.41至-0.04),两组之间的DBP(MD=-1.09mmHg;95%CI:-1.94至-0.24)。
    结论:在未控制的T2DM患者中,FRC和免费联合治疗的安全性和有效性具有可比性.在需要自由组合的患者中使用FRC是合理的。
    OBJECTIVE: This study aimed to evaluate the safety and efficacy of the fixed-ratio combination (FRC) and free combination of basal insulin and glucagon-like peptide-1 receptor agonist (GLP-1RA) in patients with type 2 diabetes mellitus (T2DM).
    METHODS: PubMed, Web of Science, Embase, The Cochrane Library, and four Chinese databases were searched for relevant studies from inception to April 13, 2023. Phase III clinical trials involving FRC or free combination in patients with uncontrolled T2DM were included. A network meta-analysis (NMA) was used to evaluate the effects of FRC and free combination. The Cochrane Collaboration\'s tool was used to evaluate the risk-of-bias. The primary outcomes were changes in hemoglobin A1c (HbA1c), body weight, and incident hypoglycemia. Secondary outcomes included changes in systolic blood pressure (SBP) and diastolic blood pressure (DBP). This study was registered with PROSPERO (CRD42023409585).
    RESULTS: Forty-two trials with 23,619 patients were included in the NMA, and treatments were categorized as FRC, free combination and NOINSGLP (neither FRC nor free combination). The forest plots revealed comparable HbA1c control (mean difference (MD) = 0.07%, 95% confidence interval (CI): -0.17 to -0.30) between free combination and FRC. However, there were significant differences in the body weight (MD = -2.06 kg; 95% CI: -3.34 to -0.77), SBP (MD = -1.22 mmHg; 95% CI: -2.41 to -0.04), and DBP (MD = -1.09 mmHg; 95% CI: -1.94 to -0.24) between the two groups.
    CONCLUSIONS: In patients with uncontrolled T2DM, the safety and efficacy of FRC and free combination therapy were comparable. The use of FRC is justifiable in patients requiring free combination.
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  • 文章类型: Systematic Review
    这项系统评价和荟萃分析旨在比较阿维定与尼马特雷韦/利托那韦(Paxlovid)治疗2019年冠状病毒病(COVID-19)的有效性和安全性。研究人员在PubMed上进行了搜索,科克伦图书馆,WebofScience,medRxiv,和谷歌学者直到2024年1月。使用Cochrane偏倚风险工具来评估纳入研究的质量,采用综合Meta分析软件进行数据分析。13项研究,包括4949名患者,进行了分析。荟萃分析结果显示,在死亡率方面,阿兹夫定组和Paxlovid组之间没有显着差异(比值率[OR]=0.84,95%置信区间[CI]:0.59-1.21),阴性聚合酶链反应(PCR)转换时间(标准平均差[SMD]=1.52,95%CI:-1.07-4.11),住院时间(SMD=-0.39,95%CI:-1.12-0.33)。然而,两组在重症监护病房入院(OR=0.42,95%CI:0.23-0.75)和机械通气需求(OR=0.61,95%CI:0.44-0.86)方面观察到了有利于阿维定的显著差异.阿维定组的不良事件发生率显著降低(OR=0.66,95%CI:0.43-0.99)。证据的确定性被评为低和中等。Azvudine和Paxlovid在降低死亡率方面表现出相似的效果。PCR阴性转化时间和住院时间。然而,阿兹维定在改善其他结局方面表现出更好的效果.关于证据的确定性水平,需要进一步的研究来验证或挑战这些结果.
    This systematic review and meta-analysis aimed to compare the effectiveness and safety of azvudine versus nirmatrelvir/ritonavir (Paxlovid) in treating coronavirus disease 2019 (COVID-19). The researchers conducted searches on PubMed, Cochrane Library, Web of Science, medRxiv, and Google Scholar until January 2024. The Cochrane risk of bias tool was utilised to evaluate the quality of the included studies, and data analysis was performed using Comprehensive Meta-Analysis software. Thirteen studies, including 4949 patients, were analysed. The meta-analysis results showed no significant difference between the azvudine and Paxlovid groups in terms of mortality rate (odds rate [OR] = 0.84, 95% confidence interval [CI]: 0.59-1.21), negative polymerase chain reaction (PCR) conversion time (standard mean difference [SMD] = 1.52, 95% CI: -1.07-4.11), and hospital stay (SMD = -0.39, 95% CI: -1.12-0.33). However, a significant difference was observed between the two groups in terms of intensive care unit admission (OR = 0.42, 95% CI: 0.23-0.75) and the need for mechanical ventilation (OR = 0.61, 95% CI: 0.44-0.86) in favour of azvudine. The incidence of adverse events in the azvudine group was significantly lower (OR = 0.66, 95% CI: 0.43-0.99). The certainty of evidence was rated as low and moderate. Azvudine and Paxlovid demonstrated similar effectiveness in reducing mortality rates, negative PCR conversion time and hospital stay. However, azvudine showed better effectiveness in improving other outcomes. Regarding the level of certainty of evidence, further research is needed to validate or challenge these results.
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  • 文章类型: Journal Article
    结直肠癌是全球癌症死亡的主要原因。转移性结直肠癌(mCRC)的第一和第二治疗线包括基于5-氟尿嘧啶的化疗。然而,一线和二线进展后的治疗仍不清楚.我们搜索了PubMed,Scopus,科克伦,和WebofScience数据库,用于调查使用氟尿苷-替吡草胺联合贝伐单抗与单独使用氟尿苷-替吡草胺治疗mCRC的研究。我们使用RStudio版本4.2.3;并且我们认为p<0.05显著。纳入了7项研究和1,182例患者-602(51%)接受了三氟尿苷-替哌嘧啶加贝伐单抗。与对照相比,贝伐单抗组的无进展生存期(PFS)(HR0.52;95%CI0.42~0.63;p<0.001)和总生存期(OS)(HR0.61;95%CI0.52~0.70;p<0.001)显著高于贝伐单抗组.客观缓解率(ORR)(RR3.14;95%CI1.51-6.51;p=0.002)和疾病控制率(DCR)(RR1.66;95%CI1.28-2.16;p=0.0001)有利于干预。关于不良事件,干预有较高的中性粒细胞减少率(RR1.38;95%CI1.19-1.59;p=0.00001),而单药治疗组贫血风险较高(RR0.60;95%CI0.44-0.82;p=0.001).我们的结果支持添加贝伐单抗与PFS的显着益处相关,操作系统,ORR和DCR。
    Colorectal cancer is the leading cause of cancer death worldwide. The first and second lines of treatment for metastatic colorectal cancer (mCRC) include chemotherapy based on 5-fluorouracil. However, treatment following progression on the first and second line is still unclear. We searched PubMed, Scopus, Cochrane, and Web of Science databases for studies investigating the use of trifluridine-tipiracil with bevacizumab versus trifluridine-tipiracil alone for mCRC. We used RStudio version 4.2.3; and we considered p < 0.05 significant. Seven studies and 1,182 patients were included - 602 (51%) received trifluridine-tipiracil plus bevacizumab. Compared with control, the progression-free survival (PFS) (HR 0.52; 95% CI 0.42-0.63; p < 0.001) and overall survival (OS) (HR 0.61; 95% CI 0.52-0.70; p < 0.001) were significantly higher with bevacizumab. The objective response rate (ORR) (RR 3.14; 95% CI 1.51-6.51; p = 0.002) and disease control rate (DCR) (RR 1.66; 95% CI 1.28-2.16; p = 0.0001) favored the intervention. Regarding adverse events, the intervention had a higher rate of neutropenia (RR 1.38; 95% CI 1.19-1.59; p = 0.00001), whereas the monotherapy group had a higher risk of anemia (RR 0.60; 95% CI 0.44-0.82; p = 0.001). Our results support that the addition of bevacizumab is associated with a significant benefit in PFS, OS, ORR and DCR.
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  • 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: Letter
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