Aminobutyrates

氨基丁酸
  • 文章类型: Journal Article
    本研究旨在使用亚组不成比例性分析评估沙库必曲/缬沙坦与地理亚群中痴呆相关不良事件(AE)之间的关联。分析了FDA不良事件报告系统中涉及60岁或以上使用沙库巴曲/缬沙坦或血管紧张素受体阻滞剂(ARB)的患者的病例。计算每个大陆的痴呆相关AE的调整报告比值比(ROR)。总共鉴定出61,518个与沙库巴曲/缬沙坦或ARB相关的不良事件。其中,1441是痴呆相关的AE。在亚洲,欧洲,非洲,与ARB相比,与沙库巴曲/缬沙坦相关的痴呆相关AE的报告风险较低(调整后的ROR,0.57[95%CI0.31-1.01];调整后ROR,0.89[95%CI0.69-1.14];调整后ROR,0.40[95%CI0.27-0.61],分别)。在拉丁美洲和大洋洲,与沙库巴曲/缬沙坦相关的痴呆相关AE的报告风险与与ARB相关的报告风险相似(调整后的ROR,1.04[95%CI0.75-1.44];调整后ROR,1.02[95%CI0.31-3.37],分别)。相反,在北美,与ARB相比,沙库巴曲/缬沙坦相关的报告风险更高(调整后的ROR,1.29[95%CI1.10-1.53])。尽管ROR值不符合信号检测的标准,在北美观察到的ROR显著大于1,提示可能需要谨慎对待与沙库巴曲/缬沙坦相关的潜在痴呆相关不良事件.
    This study aimed to evaluate the association between sacubitril/valsartan and dementia-related adverse events (AEs) in geographical subpopulations using subgroup disproportionality analysis. Cases from the FDA adverse event reporting system involving patients aged 60 or older with sacubitril/valsartan or angiotensin receptor blockers (ARBs) were analyzed. The adjusted reporting odds ratios (RORs) for dementia-related AEs were calculated for each continent. A total of 61,518 AEs associated with sacubitril/valsartan or ARBs were identified. Among these, 1441 were dementia-related AEs. In Asia, Europe, and Africa, the reporting risk of dementia-related AEs associated with sacubitril/valsartan was lower compared to ARBs (adjusted ROR, 0.57 [95% CI 0.31-1.01]; adjusted ROR, 0.89 [95% CI 0.69-1.14]; adjusted ROR, 0.40 [95% CI 0.27-0.61], respectively). In Latin America and Oceania, the reporting risk of dementia-related AEs associated with sacubitril/valsartan was similar to that associated with ARBs (adjusted ROR, 1.04 [95% CI 0.75-1.44]; adjusted ROR, 1.02 [95% CI 0.31-3.37], respectively). On the contrary, in North America, the reporting risk associated with sacubitril/valsartan was higher compared to ARBs (adjusted ROR, 1.29 [95% CI 1.10-1.53]). Although the ROR value did not meet the criteria for signal detection, the significantly greater than 1 ROR observed in North America suggests that caution may be warranted regarding potential dementia-related adverse events associated with sacubitril/valsartan.
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  • 文章类型: Journal Article
    为了研究LCZ696,一种血管紧张素受体-脑啡肽抑制剂(ARNI)的作用和机制,腹膜间皮细胞的上皮-间质转化(EMT)和巨噬细胞M2极化。
    我们检查了LCZ696在4.25%高糖腹膜透析液(PDF)诱导的腹膜纤维化(PF)小鼠模型中的作用,并探讨了LCZ696对TGF-β1(5ng/mL)和IL-4(10ng/mL)刺激的Raw264.7细胞的作用机制。为了进一步阐明机制,我们用Raw264.7细胞的条件培养基处理HPMC。
    LCZ696有效改善了PDF小鼠的PF并抑制了EMT过程。体外,LCZ696还显著减轻TGF-β1诱导的HPMC的EMT,尽管与缬沙坦治疗组相比没有统计学上的显着差异。此外,LCZ696改善蜗牛和Slug的表达增加,驱动EMT的两个核转录因子。机械上,TGF-β1增加TGFβRI的表达,p-Smad3、p-PDGFRβ和p-EGFR,而用LCZ696治疗消除了TGF-β/Smad3,PDGFRβ和EGFR信号通路的激活。此外,Raw264.7暴露于IL-4导致精氨酸酶-1、CD163和p-STAT6的表达增加。用LCZ696处理通过使STAT6信号通路失活而抑制IL-4引起的M2巨噬细胞极化。此外,我们观察到LCZ696通过阻断M2巨噬细胞分泌TGF-β1抑制EMT。
    我们的研究表明,LCZ696通过阻断TGF-β/Smad3,PDGFRβ和EGFR通路,改善PF并改善TGF-β1诱导的HPMCEMT。同时,LCZ696还通过调节STAT6途径抑制M2巨噬细胞极化。
    UNASSIGNED: To investigate the effects and mechanisms of LCZ696, an angiotensin receptor-neprilysin inhibitor (ARNI), on epithelial-mesenchymal transition (EMT) of peritoneal mesothelial cells and on macrophage M2 polarization.
    UNASSIGNED: We examined the effects of LCZ696 in a 4.25% high glucose peritoneal dialysis fluid (PDF)-induced peritoneal fibrosis (PF) mouse model, and explored the mechanisms of LCZ696 on human peritoneal mesothelial cells (HPMCs) stimulated by TGF-β1 (5 ng/mL) and on Raw264.7 cells stimulated by IL-4 (10 ng/mL). To further elucidate the mechanism, we treated HPMCs with the conditioned medium of Raw264.7 cells.
    UNASSIGNED: LCZ696 effectively improved PF and inhibited the process of EMT in PDF mice. In vitro, LCZ696 also significantly alleviated the EMT of TGF-β1 induced HPMCs, although there was no statistically significant difference when compared to the Valsartan treatment group. Moreover, LCZ696 ameliorates the increased expression of Snail and Slug, two nuclear transcription factors that drive the EMT. Mechanistically, TGF-β1 increased the expression of TGFβRI, p-Smad3, p-PDGFRβ and p-EGFR, while treatment with LCZ696 abrogated the activation of TGF-β/Smad3, PDGFRβ and EGFR signaling pathways. Additionally, exposure of Raw264.7 to IL-4 results in increasing expression of Arginase-1, CD163 and p-STAT6. Treatment with LCZ696 inhibited IL-4-elicited M2 macrophage polarization by inactivating the STAT6 signaling pathway. Furthermore, we observed that LCZ696 inhibits EMT by blocking TGF-β1 secretion from M2 macrophages.
    UNASSIGNED: Our study demonstrated that LCZ696 improves PF and ameliorates TGF-β1-induced EMT of HPMCs by blocking TGF-β/Smad3, PDGFRβ and EGFR pathways. Meanwhile, LCZ696 also inhibits M2 macrophage polarization by regulating STAT6 pathway.
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  • 文章类型: Journal Article
    随机临床试验表明,沙库巴曲-缬沙坦可降低射血分数(HFrEF)降低的心力衰竭患者的死亡率和住院风险,但需要透析的肾衰竭患者被排除在外.
    研究沙库巴曲缬沙坦与血管紧张素转换酶抑制剂或血管紧张素受体阻滞剂(ACEI或ARB)在需要血液透析的HFrEF患者中的比较有效性。
    这次回顾展,1:1倾向评分匹配的比较有效性研究包括18岁或以上患有HFrEF的患者,参加医疗保险A部分,B,D,从2015年7月8日至2020年12月31日接受中心血液透析至少存活90天。患者被排除在少于180天的连续医疗保险A部分,B,和D主要付款人承保或事先分配沙库巴曲-缬沙坦。数据分析于2023年9月23日至2024年6月25日进行。
    沙库巴曲-缬沙坦的新用途与ACEI或ARB的新用途或持续用途。
    开始沙库巴曲-缬沙坦治疗与全因死亡率之间的关系,心血管死亡率,全因住院,在倾向评分匹配的样本中,使用Cox比例风险回归模型评估HF住院率.
    参与者包括1:1配对的1434名沙库比曲-缬沙坦使用者和1434名ACEI或ARB使用者(平均[SD]年龄,64[13]年)。在2868名匹配的参与者中,996(65%)为男性;987(34%)为黑人或非裔美国人,1677(58%)为白人;透析年份中位数为3.8(IQR,1.8-6.3)年。中位随访时间为0.9(IQR,0.4-1.7)年。sacubitril-valsartan(vsACEI或ARB)治疗与全因死亡率降低相关(风险比[HR],0.82[95%CI,0.73-0.92])和全因住院(HR,0.86[95%CI,0.79-0.93]),但不是心血管死亡率(HR,1.01[95%CI,0.86-1.19])或HF住院(HR,0.91[95%CI,0.82-1.02])。高钾血症(HR,0.71[95%CI,0.62-0.81]),低血压无差异(HR,0.99[95%CI,0.83-1.19])。只有195名参与者(14%)接受过沙库必曲(97mg,每日两次)和缬沙坦(103mg,每日两次)的最大组合剂量。
    在这项需要血液透析的HFrEF患者的有效性比较研究中,沙库巴曲-缬沙坦治疗与全因死亡率和全因住院的有益效果相关.
    UNASSIGNED: Randomized clinical trials have shown that sacubitril-valsartan reduces the risks of mortality and hospitalization in patients with heart failure with reduced ejection fraction (HFrEF), but patients with kidney failure requiring dialysis were excluded.
    UNASSIGNED: To investigate the comparative effectiveness of sacubitril-valsartan vs angiotensin-converting enzyme inhibitors or angiotensin receptor blockers (ACEIs or ARBs) in patients with HFrEF requiring hemodialysis.
    UNASSIGNED: This retrospective, 1:1 propensity score-matched comparative effectiveness study included patients who were 18 years or older with HFrEF, enrolled in Medicare Parts A, B, and D, and survived at least 90 days receiving in-center hemodialysis from July 8, 2015, to December 31, 2020. Patients were excluded for less than 180 days of continuous Medicare Parts A, B, and D primary payer coverage or prior dispensing of sacubitril-valsartan. Data analysis was conducted from September 23, 2023, to June 25, 2024.
    UNASSIGNED: New use of sacubitril-valsartan vs new or continued use of ACEIs or ARBs.
    UNASSIGNED: The associations between initiation of sacubitril-valsartan therapy and all-cause mortality, cardiovascular mortality, all-cause hospitalization, and HF hospitalization were assessed using Cox proportional hazards regression models in a propensity score-matched sample.
    UNASSIGNED: Participants included 1:1 matched pairs of 1434 sacubitril-valsartan users and 1434 ACEI or ARB users (mean [SD] age, 64 [13] years). Of the 2868 matched participants, 996 (65%) were male; 987 (34%) were Black or African American and 1677 (58%) were White; and median dialysis vintage was 3.8 (IQR, 1.8-6.3) years. The median follow-up was 0.9 (IQR, 0.4-1.7) years. Sacubitril-valsartan (vs ACEI or ARB) therapy was associated with a reduction in all-cause mortality (hazard ratio [HR], 0.82 [95% CI, 0.73-0.92]) and all-cause hospitalization (HR, 0.86 [95% CI, 0.79-0.93]) but not cardiovascular mortality (HR, 1.01 [95% CI, 0.86-1.19]) or HF hospitalization (HR, 0.91 [95% CI, 0.82-1.02]). There was a decrease in hyperkalemia (HR, 0.71 [95% CI, 0.62-0.81]) and no difference in hypotension (HR, 0.99 [95% CI, 0.83-1.19]). Only 195 participants (14%) ever received the maximum combination dose of sacubitril (97 mg twice daily) and valsartan (103 mg twice daily).
    UNASSIGNED: In this comparative effectiveness study of patients with HFrEF requiring hemodialysis, sacubitril-valsartan therapy was associated with beneficial effects in all-cause mortality and all-cause hospitalization.
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  • 文章类型: Journal Article
    背景:β-氨基丁酸(BABA)已成功用于许多植物物种的抗逆性;但是,到目前为止,它在森林树木中的有效性还没有得到充分的探索。本研究旨在探讨BABA对形态学的影响,生理,和各种生长条件下田间榆树的表观遗传参数。通过使用反相高效液相色谱(UPLC)结合灵敏的质谱来评估DNA和RNA中的表观遗传变化。
    结果:所呈现的结果证实了BABA对发育的影响,生理学,和田间榆树的应力耐受性。然而,最重要的发现与这种氨基酸促进的广泛表观遗传变化有关,涉及DNA和RNA。我们的发现证实了,第一次,BABA不仅影响植物中众所周知的表观遗传标记,如5-甲基胞嘧啶,还有其他一些非规范核碱基,如5-羟甲基尿嘧啶,5-甲酰胞嘧啶,5-羟甲基胞嘧啶,N6-甲基腺嘌呤,尿嘧啶(DNA)和胸腺嘧啶(RNA)。对N6-甲基腺嘌呤水平的显着影响,主要的细菌表观遗传标记,尤其值得注意。在这种情况下,问题是,这种效应是否归因于微生物组的表观遗传变化,植物基因组,或者两者兼而有之。
    结论:植物表型是植物DNA之间复杂相互作用的结果,微生物组,和环境。我们认为,植物和微生物组中不同类型的表观遗传变化可能在很大程度上未知的记忆过程中起重要作用,使植物能够更快地适应不断变化的环境条件。
    BACKGROUND: β-Aminobutyric acid (BABA) has been successfully used to prime stress resistance in numerous plant species; however, its effectiveness in forest trees has been poorly explored thus far. This study aimed to investigate the influence of BABA on morphological, physiological, and epigenetic parameters in field elms under various growth conditions. Epigenetic changes were assessed in both DNA and RNA through the use of reversed-phase ultra-performance liquid chromatography (UPLC) coupled with sensitive mass spectrometry.
    RESULTS: The presented results confirm the influence of BABA on the development, physiology, and stress tolerance in field elms. However, the most important findings are related to the broad epigenetic changes promoted by this amino acid, which involve both DNA and RNA. Our findings confirm, for the first time, that BABA influences not only well-known epigenetic markers in plants, such as 5-methylcytosine, but also several other non-canonical nucleobases, such as 5-hydroxymethyluracil, 5-formylcytosine, 5-hydroxymethylcytosine, N6-methyladenine, uracil (in DNA) and thymine (in RNA). The significant effect on the levels of N6-methyladenine, the main bacterial epigenetic marker, is particularly noteworthy. In this case, the question arises as to whether this effect is due to epigenetic changes in the microbiome, the plant genome, or both.
    CONCLUSIONS: The plant phenotype is the result of complex interactions between the plant\'s DNA, the microbiome, and the environment. We propose that different types of epigenetic changes in the plant and microbiome may play important roles in the largely unknown memory process that enables plants to adapt faster to changing environmental conditions.
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  • 文章类型: Journal Article
    自2014年以来,沙库巴曲/缬沙坦(Entresto®)被广泛用于心力衰竭。尽管Neprilysin抑制心脏衰竭的好处,对潜在的淀粉样β(Aβ)积累和阿尔茨海默病(AD)风险的担忧持续存在。这篇叙述性评论,批准后十年,评估长期使用沙库巴曲/缬沙坦的淀粉样蛋白病理和神经认知障碍的风险。临床试验,真实世界的研究,药物警戒数据并不表明认知功能下降的风险增加.在接受沙库巴曲/缬沙坦血液淀粉样蛋白生物标志物治疗的患者中,而神经影像学生物标志物显示淀粉样蛋白负荷没有显著增加。尽管在沙库必曲/缬沙坦治疗下存在淀粉样蛋白积累和AD的理论风险,目前的临床数据似乎令人放心,并且没有信号表明认知能力下降的风险增加,但是淀粉样蛋白血液生物标志物的扰动,这意味着在这种情况下解释生物标志物时非常谨慎。
    Since 2014, sacubitril/valsartan (Entresto®) is widely prescribed for heart failure. Despite neprilysin inhibition\'s benefits in heart failure, concerns about potential amyloid-beta (Aβ) accumulation and Alzheimer\'s disease (AD) risk have persisted. This narrative review, a decade post-approval, evaluates the risk of amyloid pathology and neurocognitive disorders in long-term sacubitril/valsartan use. Clinical trials, real-world studies, and pharmacovigilance data do not indicate an increased risk of cognitive decline. In patients treated with sacubitril/valsartan blood-based amyloid biomarkers show perturbations, while neuroimaging biomarkers reveal no significant increase in amyloid load. Despite a theoretical risk of amyloid accumulation and AD under treatment with sacubitril/valsartan, current clinical data appears reassuring, and there is no signal indicating an increased risk of cognitive decline, but a perturbation of amyloid blood-based biomarkers, which implies great caution when interpreting biomarkers in this context.
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  • 文章类型: Journal Article
    Sacubitril/valsartan是一种血管紧张素受体脑啡肽酶抑制剂(ARNI),已在多项临床试验中显示具有临床益处,并被主要临床管理指南推荐为降低射血分数的心力衰竭(HFrEF)的一线治疗方法。在临床试验中观察到的最显著的益处是其在减少再入院方面的作用。然而,几乎没有证据支持它在实践中的有效性,尤其是在沙特阿拉伯。使用沙特阿拉伯2家三级医院的患者病历进行了多中心回顾性队列研究。符合条件的患者为确诊为HFrEF的成年人(≥18岁),除其他推荐的HFrEF治疗外,还接受沙库巴曲/缬沙坦或血管紧张素转换酶抑制剂(ACEI)/血管紧张素受体阻滞剂(ARB)治疗。主要终点是全因30天再入院率。次要终点包括60天的全因再入院,90天,和12个月。此外,30天,60天,并评估了因HF导致的90天再入院。共有398例患者纳入我们的分析;199例(50.0%)接受沙库巴曲/缬沙坦(第1组),199例(50.0%)接受ACEI/ARB(第2组)。我们的结果表明,第1组的全因30天再入院率显着低于第2组(7%vs25.0%,RR0.28,95%Cl0.16-0.49;P<.001)。此外,次要结果显示60天明显减少,90天,与第2组相比,第1组确定了12个月的全因再入院(11%vs30.7%,RR0.36,95%CI0.23-0.56;P<.001),(11.6%。vs32.6%,RR0.35,95%CI0.23-0.55;P<.001)和(23.6%vs51.2%,RR0.46,95%CI0.35-0.62;P<.001),分别。此外,30天高频再入院,60天,第1组90天明显低于第2组(P<0.05)。与ACEI/ARB相比,Sacubitril/缬沙坦治疗HFrEF的全因再入院率和HF再入院率显着降低。这些福利延长至出院后12个月。
    Sacubitril/valsartan is an angiotensin receptor neprilysin inhibitor (ARNI) that has been shown in multiple clinical trials to have clinical benefits and is recommended by major clinical management guidelines as a first-line treatment for heart failure with reduced ejection fraction (HFrEF). The most significant benefit that was observed in clinical trials is its effect in reducing hospital readmissions. However, little evidence supports its effectiveness in practice, especially in Saudi Arabia. A multicenter retrospective cohort study was conducted using the patient medical records at 2 tertiary hospitals in Saudi Arabia. Eligible patients were adults (≥18 years old) with a confirmed diagnosis of HFrEF who were discharged on either sacubitril/valsartan or angiotensin-converting enzyme inhibitors (ACEI)/angiotensin receptor blockers (ARB) in addition to the other recommended therapy for HFrEF. The primary endpoint was the all-cause 30-day readmission rate. The secondary endpoints included all-cause readmissions at 60-day, 90-day, and 12 months. Additionally, 30-day, 60-day, and 90-day readmissions due to HF were evaluated. A total of 398 patients were included in our analysis; 199 (50.0%) received sacubitril/valsartan (group 1), and 199 (50.0%) received ACEI/ARB (group 2). Our results showed that all-cause 30-day readmissions in group 1 were significantly lower than in group 2 (7% vs 25.0%, RR 0.28, 95% Cl 0.16-0.49; P < .001). Additionally, the secondary outcomes showed significantly fewer 60-day, 90-day, and 12-month all-cause readmissions were identified in group 1 compared to group 2 (11% vs 30.7%, RR 0.36, 95% CI 0.23-0.56; P < .001), (11.6%. vs 32.6%, RR 0.35, 95% CI 0.23-0.55; P < .001) and (23.6% vs 51.2%, RR 0.46, 95% CI 0.35-0.62; P < .001), respectively. Furthermore, HF readmissions at 30-day, 60-day, and 90-day in group 1 were significantly lower than in group 2 (P < .05). Sacubitril/valsartan for the treatment of HFrEF is associated with a significantly lower rate of all-cause readmission as well as HF readmissions compared to ACEI/ARB. These benefits extend up to 12 months post-discharge.
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  • 文章类型: Journal Article
    背景技术心力衰竭和终末期肾病常共存,在血液透析患者中,心力衰竭的管理可能具有挑战性。Sacubitril-valsartan(SV)是第一种获得监管批准的药物,可用于射血分数降低的慢性心力衰竭(HFrEF)和纽约心脏协会(NYHA)II级患者。III,或者IV.本研究旨在评估SV用于慢性心力衰竭患者维持性血液透析(MHD)的有效性和安全性。材料与方法2021年9月至2022年10月,对陕西省第二人民医院血液透析中心28例MHD合并慢性心力衰竭患者进行定期随访。在12周的随访期间,所有患者均接受SV治疗,剂量为每天100~400mg.生化指标,超声心动图参数,生活质量评分,并对不良事件进行了评估。结果我们纳入了28例患者。与基线水平相比,这些接受SV治疗的患者的NYHAIII级从60.71%显着降低至32.14%(P<0.05),左心室射血分数(LVEF)从44.29±8.92%显著提高到53.32±7.88%(P<0.001),物理成分汇总(PCS)评分从40.0±6.41提高到56.20±9.86(P<0.001),精神成分汇总(MCS)评分从39.99±6.14提高到52.59±11.0(P<0.001)。结论我们证明SV改善了慢性心力衰竭MHD患者的NYHA分级和LVEF值,也改善了他们的生活质量。
    BACKGROUND Heart failure and end-stage renal disease often coexist, and management of heart failure can be challenging in patients during hemodialysis. Sacubitril-valsartan (SV) is the first drug to receive regulatory approval for use in patients with chronic heart failure with reduced ejection fraction (HFrEF) and New York Heart Association (NYHA) classification II, III, or IV. This study aimed to evaluate the efficacy and safety of SV for use in chronic heart failure patients on maintenance hemodialysis (MHD). MATERIAL AND METHODS From September 2021 to October 2022, 28 patients on MHD with chronic heart failure at the hemodialysis center of Shaanxi Second Provincial People\'s Hospital were regularly followed. During the 12-week follow-up period, all patients were administered SV at doses of 100-400 mg per day. Biochemical indicators, echocardiographic parameters, life quality scores, and adverse events were evaluated. RESULTS We enrolled 28 patients. Compared with the baseline levels, NYHA class III in these patients treated with SV was significantly decreased from 60.71% to 32.14% (P<0.05), left ventricular ejection fraction (LVEF) was significantly improved from 44.29±8.92% to 53.32±7.88% (P<0.001), the Physical Component Summary (PCS) score was significantly improved from 40.0±6.41 to 56.20±9.86 (P<0.001), and the Mental Component Summary (MCS) score was significantly improved from 39.99±6.14 to 52.59±11.0 (P<0.001). CONCLUSIONS We demonstrated that SV improved NYHA classification and LVEF values of patients on MHD with chronic heart failure and also improved their quality of life.
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  • 文章类型: Journal Article
    背景:与射血分数保留的心力衰竭(HFpEF)的有害临床结局相关的预后标志物和生物学途径仍未完全确定。
    结果:我们测量了参与PARAGON-HF的1117例HFpEF患者的4123种独特蛋白的血清水平(LCZ696与缬沙坦相比,关于射血分数保留的心力衰竭患者的发病率和死亡率)使用改良的适体蛋白质组学测定法进行试验。基线循环蛋白浓度与主要终点显著相关,通过复发事件回归确定总心力衰竭住院和心血管死亡的时间和发生率。多重测试的会计,根据年龄调整,性别,治疗,和抗凝剂的使用,并与PARADIGM-HF(ARNI与ACEI的前瞻性比较,以确定对心力衰竭的全球死亡率和发病率的影响)和ATMOSPHERE(阿利吉仑和阿利吉仑/依那普利联合用药对慢性心力衰竭患者的发病率和死亡率的影响)临床试验中2515例射血分数降低的心力衰竭患者的公开分析进行了比较。我们确定了288种与HFpEF患者心力衰竭住院和心血管死亡风险密切相关的蛋白质。与结果密切相关的基线蛋白包括B2M(β-2微球蛋白),TIMP1(基质金属蛋白酶1的组织抑制剂),SERPINA4(SERPIN家族A成员4),和SVEP1(寿司,vonWillebrand因子A型,EGF,和包含1)的pentraxin结构域。总的来说,与射血分数降低的心力衰竭患者相比,HFpEF患者的蛋白-结局相关性无显著差异.HFpEF患者的蛋白质组风险评分不优于射血分数降低的心力衰竭患者的蛋白质组风险评分,也不优于临床风险因素。NT-proBNP(N末端B型利钠肽前体),或高敏心肌肌钙蛋白.
    结论:许多血清蛋白与代谢相关,凝血,在PARAGON-HF蛋白质组亚研究中,细胞外基质调节通路与HFpEF预后较差相关。我们的研究结果表明,在将临床试验参与者与射血分数范围内的心力衰竭进行比较时,心力衰竭住院和心血管死亡的血清蛋白质组风险标志物之间存在实质性相似性。
    背景:URL:https://www。clinicaltrials.gov;唯一标识符:NCT01920711、NCT01035255、NCT00853658。
    BACKGROUND: Prognostic markers and biological pathways linked to detrimental clinical outcomes in heart failure with preserved ejection fraction (HFpEF) remain incompletely defined.
    RESULTS: We measured serum levels of 4123 unique proteins in 1117 patients with HFpEF enrolled in the PARAGON-HF (Efficacy and Safety of LCZ696 Compared to Valsartan, on Morbidity and Mortality in Heart Failure Patients With Preserved Ejection Fraction) trial using a modified aptamer proteomic assay. Baseline circulating protein concentrations significantly associated with the primary end point and the timing and occurrence of total heart failure hospitalization and cardiovascular death were identified by recurrent events regression, accounting for multiple testing, adjusted for age, sex, treatment, and anticoagulant use, and compared with published analyses in 2515 patients with heart failure with reduced ejection fraction from the PARADIGM-HF (Prospective Comparison of ARNI With ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure) and ATMOSPHERE (Efficacy and Safety of Aliskiren and Aliskiren/Enalapril Combination on Morbidity-Mortality in Patients With Chronic Heart Failure) clinical trials. We identified 288 proteins that were robustly associated with the risk of heart failure hospitalization and cardiovascular death in patients with HFpEF. The baseline proteins most strongly related to outcomes included B2M (β-2 microglobulin), TIMP1 (tissue inhibitor of matrix metalloproteinase 1), SERPINA4 (serpin family A member 4), and SVEP1 (sushi, von Willebrand factor type A, EGF, and pentraxin domain containing 1). Overall, the protein-outcome associations in patients with HFpEF did not markedly differ as compared with patients with heart failure with reduced ejection fraction. A proteomic risk score derived in patients with HFpEF was not superior to a previous proteomic score derived in heart failure with reduced ejection fraction nor to clinical risk factors, NT-proBNP (N-terminal pro-B-type natriuretic peptide), or high-sensitivity cardiac troponin.
    CONCLUSIONS: Numerous serum proteins linked to metabolic, coagulation, and extracellular matrix regulatory pathways were associated with worse HFpEF prognosis in the PARAGON-HF proteomic substudy. Our results demonstrate substantial similarities among serum proteomic risk markers for heart failure hospitalization and cardiovascular death when comparing clinical trial participants with heart failure across the ejection fraction spectrum.
    BACKGROUND: URL: https://www.clinicaltrials.gov; Unique Identifiers: NCT01920711, NCT01035255, NCT00853658.
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  • 文章类型: Journal Article
    血管紧张素受体/脑啡肽抑制剂(ARNI),心力衰竭治疗,是一种由沙库巴曲组成的组合药物,一种脑啡肽酶抑制剂,还有缬沙坦,血管受体阻滞剂.在没有心脏或肾脏问题的情况下,没有关于ARNI对肾脏血流动力学影响的人类或兽医研究。因此,我们研究了ARNI对5只健康犬肾血流动力学的影响.将ARNI以20mg/kg的口服剂量每天两次施用于所有五只狗,持续4周。在ARNI给药(BL)前一天评估肾脏血流动力学,在第7天和第28天。与BL和第7天相比,第28天的肾小球滤过率(GFR)显着增加,而与BL相比,第7天和第28天的肾血浆流量增加。在BL和第28天之间收缩压显著降低。与BL相比,血浆心房利钠肽(ANP)浓度在第7天增加。此外,在第28天,5只狗中的3只狗的ANP浓度增加。在其余两只狗中观察到不同的ANP浓度。尿量和心率都保持相对稳定,没有明显变化。总之,ARNI可以增强健康犬的肾血流动力学。ARNI可能是治疗狗的心脏和肾脏疾病的有价值的药物。
    An angiotensin receptor/neprilysin inhibitor (ARNI), a heart failure treatment, is a combination drug made up of sacubitril, a neprilysin inhibitor, and valsartan, a vascular receptor blocker. No human or veterinary studies regarding the effect of ARNI on renal haemodynamics in the absence of cardiac or renal issues exist. Therefore, we investigated the effect of ARNI on renal haemodynamics in five healthy dogs. ARNI was administered to all five dogs at an oral dose of 20 mg/kg twice daily for 4 weeks. Renal haemodynamics were assessed on the day before ARNI administration (BL), on Day 7, and on Day 28. The glomerular filtration rate (GFR) significantly increased on Day 28 compared to BL and Day 7, whereas renal plasma flow increased on Day 7 and Day 28 compared to BL. Systolic blood pressure significantly decreased between BL and Day 28. Plasma atrial natriuretic peptide (ANP) concentrations increased on Day 7 compared to BL. Additionally, ANP concentrations increased on Day 28 in three of the five dogs. Different ANP concentrations were observed in the remaining two dogs. Both urine output volume and heart rate remained relatively stable and did not exhibit significant change. In conclusion, ARNI may enhance renal haemodynamics in healthy dogs. ARNI could be a valuable drug for treating both heart and kidney disease in dogs.
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  • 文章类型: Journal Article
    草铵膦(GLA),有机磷酸酯除草剂,在环境中以高浓度释放,引起人们对其潜在基因毒性作用的担忧。然而,文献中很少有文章报道该化合物可能的细胞和核作用。我们评估,通过体外和体内微核试验,GLA对培养的人淋巴细胞和Lymnaeastagnalis血细胞的遗传毒性在六个浓度:0.010(建立可接受的每日摄入量值),0.020、0.050、0.100、0.200和0.500µg/mL。在人类淋巴细胞中,我们的结果表明,在浓度从0.100到0.500μg/mL时,微核频率显著且浓度依赖性增加,而在stagnalis血细胞中,在0.200和0.500μg/mL时发现显著差异。在所有测试浓度下观察到增殖指数显着降低,除了0.010μg/mL,表明暴露于GLA可能导致细胞毒性作用增加。在L.stagnalis,在所有浓度下,产卵和身体生长也显著减少。总之,我们提供了GLA对培养的人淋巴细胞和模型生物血细胞诱导的基因组和细胞损伤的证据;此外,我们还证明了它对植物细胞增殖和生殖健康的影响。
    Glufosinate-ammonium (GLA), an organophosphate herbicide, is released at high concentrations in the environment, leading to concerns over its potential genotoxic effects. However, few articles are available in the literature reporting the possible cellular and nuclear effects of this compound. We assessed, by in vitro and in vivo micronucleus assays, the genotoxicity of GLA on cultured human lymphocytes and Lymnaea stagnalis hemocytes at six concentrations: 0.010 (the established acceptable daily intake value), 0.020, 0.050, 0.100, 0.200, and 0.500 µg/mL. In human lymphocytes, our results reveal a significant and concentration-dependent increase in micronuclei frequency at concentrations from 0.100 to 0.500 μg/mL, while in L. stagnalis hemocytes, significant differences were found at 0.200 and 0.500 μg/mL. A significant reduction in the proliferation index was observed at all tested concentrations, with the only exception of 0.010 μg/mL, indicating that the exposure to GLA could lead to increased cytotoxic effects. In L. stagnalis, a significant reduction in laid eggs and body growth was also observed at all concentrations. In conclusion, we provided evidence of the genomic and cellular damage induced by GLA on both cultured human lymphocytes and a model organism\'s hemocytes; in addition, we also demonstrated its effects on cell proliferation and reproductive health in L. stagnalis.
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