Hydrazines

Hydrazines
  • 文章类型: Journal Article
    背景:癌症恶病质影响所有癌症患者的一半以上,降低生存率。迫切需要基于证据的方法来优化治疗。
    方法:进行系统评价和网络荟萃分析,以评估不同药物治疗癌症恶病质的有效性和安全性。三个数据库(PubMed,科克伦图书馆,和WebofScience)的搜索时间为2000年1月1日至2024年3月20日。使用R软件中的netmeta软件包计算合并效果,采用随机效应模型。
    结果:对涉及1421例患者的7项安慰剂对照随机试验进行分析。配对分析表明,奥氮平的体重增加为4.6kg(95%置信区间[CI]0.83-8.37kg),艾司吲哚洛尔(20mg)3.82kg(95%CI0.73-6.91kg),阿纳瑞林(100mg)为2.36kg(95%CI1.84-2.89kg),Anamorelin(50mg)为1.31kg(95%CI0.42-2.19kg)。在安全方面,与安慰剂相比,奥氮平显示出最低的比值比,在0.26(95%CI0.07-0.94),其次是0.86的anamorelin(50mg)(95%CI0.30-2.48),Anamorelin(100mg)为0.89(95%CI0.42-1.88)。然而,网络荟萃分析无法证实奥氮平在疗效和安全性方面优于阿纳瑞林.
    结论:奥氮平和阿纳瑞林对改善癌症恶病质患者的体重均有效。个性化可能对不同的患者有帮助。
    BACKGROUND: Cancer cachexia affects more than half of all cancer patients, reducing survival rates. Evidence-based approaches are urgently needed to optimize treatment.
    METHODS: A systematic review and network meta-analysis were conducted to assess the effectiveness and safety of different pharmacotherapies for cancer cachexia. Three databases (PubMed, Cochrane Library, and Web of Science) were searched for the period from January 1, 2000, to March 20, 2024. The netmeta package in R software was used to calculate the pooled effect, employing a random effects model.
    RESULTS: Seven placebo-controlled randomized trials involving 1421 patients were analyzed. Pairwise analysis showed that body weight increases were 4.6 kg (95% confidence interval [CI] 0.83-8.37 kg) for olanzapine, 3.82 kg (95% CI 0.73-6.91 kg) for espindolol (20 mg), 2.36 kg (95% CI 1.84-2.89 kg) for anamorelin (100 mg), and 1.31 kg (95% CI 0.42-2.19 kg) for anamorelin (50 mg). In terms of safety profiles, olanzapine demonstrated the lowest odds ratio when compared to placebo, at 0.26 (95% CI 0.07-0.94), followed by anamorelin (50 mg) at 0.86 (95% CI 0.30-2.48), and anamorelin (100 mg) at 0.89 (95% CI 0.42-1.88). However, network meta-analysis could not confirm the superiority of olanzapine over anamorelin in terms of efficacy and safety.
    CONCLUSIONS: Both olanzapine and anamorelin are useful in improving body weight in patients with cancer cachexia. Personalization may be helpful for different patients.
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  • 文章类型: Journal Article
    据报道,Fisher吲哚合成的一种新变体涉及布朗斯台德酸催化的未活化末端和内部乙炔与芳基肼的加氢肼化。单独使用多磷酸作为反应介质或在共溶剂的存在下似乎提供了将C-C三键向肼部分的亲核攻击活化所需的平衡,而没有由于竞争性氨基质子化而导致后者不可修复的反应性损失。此外,乙炔与相应酮的正式水合在相同条件下发生,使其成为从炔烃产生羰基的替代方法。
    A new variant of Fisher indole synthesis involving Bronsted acid-catalyzed hydrohydrazination of unactivated terminal and internal acetylenes with arylhydrazines is reported. The use of polyphosphoric acid alone either as the reaction medium or in the presence of a co-solvent appears to provide the required balance for activating the C-C triple bond towards the nucleophilic attack of the hydrazine moiety without unrepairable reactivity loss of the latter due to competing amino group protonation. Additionally, the formal hydration of acetylenes to the corresponding ketones occurs under the same conditions, making it an alternative approach for generating carbonyl groups from alkynes.
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  • 文章类型: Journal Article
    在这项研究中,我们介绍了利用石墨碳氮化物铜钨纳米颗粒(g-C3N4@Cu-WNps)覆盖的电化学传感器的开发和分析,这些表面活性剂具有不同的链长和抗衡离子。制造的纳米颗粒进行了彻底的表征,以评估其形态,结构,和组成属性,揭示了它们的一致性,球形形态,和单斜晶相。随后,这些纳米粒子被用于制造用于肼检测的电化学传感器。电化学响应的综合比较,通过循环伏安法评估,在利用裸纳米颗粒的传感器和用表面活性剂覆盖的传感器之间进行。
    In this study, we present the development and analysis of electrochemical sensors utilizing graphitic carbon nitride copper-tungsten nanoparticles (g-C3N4 @Cu-W Nps) capped with various cationic surfactants of differing chain lengths and counter ions. The fabricated nanoparticles underwent thorough characterization to assess their morphological, structural, and compositional attributes, revealing their uniformity, spherical morphology, and monoclinic crystal phases. Subsequently, these nanoparticles were employed in the fabrication of electrochemical sensors for hydrazine detection. A comprehensive comparison of the electrochemical responses, evaluated via cyclic voltammetry, was conducted between sensors utilizing bare nanoparticles and those capped with surfactants.
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  • 文章类型: Journal Article
    Exportin-1 (XPO1) is a major transporter for hundreds of proteins. Selinexor is the first generation XPO1 inhibitor. At present, selinexor has gained more attention in the application of multiple myeloma (MM). Meanwhile, the latest clinical trials have confirmed that whether it is a single agent or combined with other chemotherapy regimens, selinexor can also achieve good therapeutic effects in patients with leukemia and lymphoma. This review summarizes the results of preclinical studies and clinical trials of selinexor in treatment of non-MM hematological malignancies, aiming to explore how to choose single agent or in combination with other regimens as induction chemotherapy.
    UNASSIGNED: 塞利尼索在非多发性骨髓瘤血液肿瘤中的应用及研究进展.
    UNASSIGNED: .核输出蛋白1(XPO1)是数百种蛋白质的主要转运蛋白。塞利尼索是第一代XPO1抑制剂,目前在多发性骨髓瘤的治疗中获得了较多的关注,同时最新临床试验也证实,无论是单药还是联合其他化疗方案,塞利尼索在白血病、淋巴瘤中同样能取得较好的治疗效果。本文总结了塞利尼索治疗非多发性骨髓瘤血液肿瘤的临床前研究和临床试验结果,旨在探讨未来如何选择塞利尼索单药或联合其他方案进行诱导化疗。.
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  • 文章类型: English Abstract
    OBJECTIVE: To investigate the effects of selinexor, a inhibitor of nuclear export protein 1 (XPO1) on the proliferation inhibition and apoptosis of Kasumi-1 cells in acute myeloid leukemia (AML).
    METHODS: MTS method was used to detect the inhibitory effect of different concentrations of selinexor on the proliferation of Kasumi-1 cells at different time points. The apoptosis rate and cell cycle changes after treatment with different concentration of selinexor were detected by flow cytometry.
    RESULTS: Selinexor inhibited the growth of Kasumi-1 cells at different time points in a concentration-dependent manner (r 24 h=0.7592, r 48 h=0.9456, and r 72 h=0.9425). Selinexor inhibited Kasumi-1 cells growth in a time-dependent manner (r =0.9057 in 2.5 μmol/L group, r =0.9897 in 5 μmol/L group and r =0.9994 in 10 μmol/L group). Selinexor could induce apoptosis of Kasumi-1 cells in a dose-dependent manner (r =0.9732), and the apoptosis of Kasumi-1 cells was more obvious with the increase of drug concentration. The proportion of G0/G1 phase was significantly increased and the proportion of S phase was significantly decreased after the treatment of Kasumi-1 cells by selinexor. With the increase of drug concentration, the proportion of Kasumi-1 cells cycle arrest in G0/G1 phase was increased and the cell synthesis was decreased.
    CONCLUSIONS: Selinexor can promote the death of tumor cells by inhibiting Kasumi-1 cells proliferation, inducing apoptosis and blocking cell cycle.
    UNASSIGNED: XPO1抑制剂塞利尼索对急性髓系白血病Kasumi-1细胞增殖和凋亡的影响.
    UNASSIGNED: 探讨核输出蛋白1(XPO1)抑制剂塞利尼索对急性髓系白血病(AML)Kasumi-1细胞增殖与凋亡的影响。.
    UNASSIGNED: 用MTS法检测不同浓度塞利尼索(0、2.5、5、10 μmol/L)作用于Kasumi-1细胞不同时间点(24、48、72 h)的增殖抑制率;流式细胞术检测不同浓度塞利尼索作用于Kasumi-1细胞48 h后的细胞凋亡率和细胞周期变化情况。.
    UNASSIGNED: 塞利尼索在不同时间点均可抑制Kasumi-1细胞生长,并呈浓度依赖(r 24 h=0.7592,r 48 h=0.9456,r 72 h=0.9425);不同浓度塞利尼索均可抑制Kasumi-1细胞生长,并呈时间依赖(2.5 μmol/L组r =0.9057,5 μmol/L组r =0.9897,10 μmol/L组r =0.9994)。塞利尼索可诱导Kasumi-1细胞凋亡,且呈浓度依赖(r =0.9732),随着药物浓度的增大,诱导Kasumi-1细胞凋亡的作用越明显。塞利尼索作用于Kasumi-1细胞48 h后,G0/G1期细胞比例明显上升,S期细胞比例明显下降,并且随着塞利尼索药物浓度的增大,Kasumi-1细胞周期阻滞于G0 /G1期的细胞比例增加,细胞合成减少。.
    UNASSIGNED: 塞利尼索可抑制Kasumi-1细胞增殖,诱导细胞凋亡,阻滞细胞周期于G0/G1期,导致肿瘤细胞的死亡。.
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  • 文章类型: Journal Article
    背景:癌症恶病质的特征是体重减轻(BW)和厌食。Anamorelin(ANAM)是一种选择性ghrelin受体激动剂,具有增强食欲的合成代谢作用。ONO-7643-05试验表明,ANAM增加了日本人群的瘦体重并改善了厌食症。然而,ANAM患者的临床结局尚未报道.
    方法:我们调查了无法切除的患者的临床结局,先进,或复发性胃肠道癌(结直肠癌,胃,或胰腺癌),在2017年4月至2022年8月期间接受ANAM治疗。恶病质被定义为存在厌食症,并且在6个月内损失≥5%的BW。为了评估对ANAM的反应,在3周内停用ANAM的患者被排除.对ANAM的反应定义为在每3周评估时维持或增加BW和从基线改善食欲。我们还收集了有关停止ANAM的原因以及临床因素与ANAM反应之间的相关性的数据。对所有接受ANAM的患者进行ANAM的安全性分析。
    结果:本研究纳入了74例患者(男性49例,女性25例),年龄中位数为67.1岁(范围,36-83).原发肿瘤为结直肠癌27例(36.5%),胃癌20例(27.0%),胰腺癌27例(36.5%)。东部肿瘤协作组的表现状态为10分之0(13.5%),44人中的1人(59.5%),和≥2/20(27.0%)。既往化疗方案数为0/20(27.0%),1/22(29.7%),32人中≥2人(43.2%)。28例患者在3周内停用ANAM,原因如下:15例患者出现低度(1级或2级)不良事件,在三个肠梗阻,三级疲劳合一,一种进行性疾病,审查了六次的后续行动,三个原因不明。ANAM应答者的比例为63.6%(95%置信区间,47.8-77.6%)。在基线特征中,年龄≥75减弱ANAM反应(p=0.03)。ANAM应答者在化疗时表现出比无应答者更好的疾病控制(75.0%vs.37.5%,p=0.02)。
    结论:在临床实践中,ANAM可以改善胃肠道肿瘤恶病质患者的预后。
    BACKGROUND: Cancer cachexia is characterized by the loss of body weight (BW) and anorexia. Anamorelin (ANAM) is a selective ghrelin receptor agonist with appetite-enhancing anabolic action. The ONO-7643-05 trial demonstrated that ANAM increased lean body mass and improved anorexia in a Japanese population. However, the clinical outcomes of patients on ANAM have not yet been reported.
    METHODS: We investigated the clinical outcomes of patients with unresectable, advanced, or recurrent gastrointestinal cancer (colorectal, gastric, or pancreatic cancer) who were treated with ANAM between April 2017 and August 2022. Cachexia was defined as the presence of anorexia and a loss of ≥ 5% of BW within 6 months. To evaluate the response to ANAM, the patients who had discontinued ANAM within 3 weeks were excluded. Response to ANAM was defined as maintenance of or increase in BW and improved appetite from baseline at every 3-week evaluation. We also collected data on the reasons for the discontinuation of ANAM and the correlation between clinical factors and ANAM response. Safety analysis of ANAM was performed for all patients who received ANAM.
    RESULTS: Seventy-four patients were included in this study (49 males and 25 females), with a median age of 67.1 years (range, 36-83). The primary tumors were colorectal cancer in 27 (36.5%), gastric cancer in 20 (27.0%), and pancreatic cancer in 27 (36.5%). The Eastern Cooperative Oncology Group performance status was 0 in 10 (13.5%), 1 in 44 (59.5%), and ≥ 2 in 20 (27.0%). The number of previous chemotherapy regimens was 0 in 20 (27.0%), 1 in 22 (29.7%), and ≥ 2 in 32 (43.2%). ANAM was discontinued within 3 weeks in 28 patients for the following reasons: low-grade (grade 1 or 2) adverse events in 15 patients, ileus in three, grade 3 fatigue in one, progressive disease in one, censored follow-up in six, and unknown reasons in three. The proportion of ANAM responders was 63.6% (95% confidence interval, 47.8-77.6%). Among baseline characteristics, age ≥ 75 attenuated the ANAM response (p = 0.03). ANAM responders showed better disease control with chemotherapy than non-responders (75.0% vs. 37.5%, p = 0.02).
    CONCLUSIONS: ANAM may improve the outcomes of patients with gastrointestinal cancer cachexia in clinical practice.
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  • 文章类型: Journal Article
    二苯基脲和亚苄基乙酰酰肼之间的分子杂交用于设计新的FGFR-1靶向癌症系列。合成设计的系列并提交给NCI-USA以筛选其对NCI癌细胞系的生长抑制活性。一些合成的杂种对NCI癌细胞系显示出有希望的生长抑制活性,平均GI%在70.39%之间,具有致死作用。化合物9a,9i,9j,和9n-p进一步选择用于五剂量测定,并且所有测试的候选物显示有希望的抗增殖活性,GI50达到亚微摩尔范围。一方面受到9a对结肠癌的有效活性的鼓舞,另一方面受到FGFR-1在其中的众所周知的过表达的鼓舞,进一步选择其作为代表性实例,评价其对HCT116细胞系细胞周期和凋亡的作用机制.有趣的是,发现9a在G1期暂停HCT116细胞系的细胞周期并诱导晚期凋亡。并行,检查了所有合成的杂种9a-p在10µM时抑制FGFR-1的潜力。化合物9a,9g,9h,发现9p具有有效的抑制活性,抑制%=63.04%,58.31%,60.87%和79.84%,分别。在FGFR-1的结合袋中的9a的分子对接模拟证实了其实现II型FGFR-1抑制剂的特征相互作用的能力。SwissADME网络工具对9a-p的ADME特性的探索证明了其令人满意的理化特性,可用于发现新的抗癌热点。
    Molecular hybridization between diphenyl urea and benzylidene acetohydrazide was adopted for the design of a new series of FGFR-1 targeting cancer. The designed series was synthesized and submitted to NCI-USA to be screened for their growth inhibitory activity on NCI cancer cell lines. Some of the synthesized hybrids displayed promising growth inhibitory activity on NCI cancer cell lines with a mean GI% between 70.39% and a lethal effect. Compounds 9a, 9i, 9j, and 9n-p were further selected for a five-dose assay and all the tested candidates showed promising antiproliferative activity with GI50 reaching the submicromolar range. Encouraged by the potent activity of 9a on colon cancer on the one hand and the well-known overexpression of FGFR-1 in it on the other hand, it was further selected as a representative example to be evaluated for its mechanism on the cell cycle and apoptosis of HCT116 cell line. Interestingly, 9a was found to pause the cell cycle of the HCT116 cell line at the G1 phase and induced late apoptosis. In parallel, all the synthesized hybrids 9a-p were examined for their potential to inhibit FGFR-1 at 10 µM. Compounds 9a, 9g, 9h, and 9p were found to have potent inhibitory activity with % inhibition = 63.04%, 58.31%, 60.87% and 79.84%, respectively. Molecular docking simulation of 9a in the binding pocket of FGFR-1 confirms its capability to achieve the characteristic interactions of the type II FGFR-1 inhibitors. Exploration of the ADME properties of 9a-p by SwissADME web tool proved their satisfactory physicochemical properties for the discovery of new anticancer hits.
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  • 文章类型: Journal Article
    本研究描述了基于杂化罗丹明染料的新型近红外(NIR)荧光探针RBNE的合成和表征,在坏死性小肠结肠炎(NEC)小鼠模型中显示出检测和成像ONOO-的出色光学能力。探针RBNE经历肼氧化还原过程,随后螺环结构的开放,在ONOO-的存在下产生开启荧光发射,展示了几个优秀的特点,包括108nm的显著斯托克斯位移,668nm的近红外发射,检测下限为56nM,低细胞毒性,和ONOO-在体外和体内具有出色的成像能力。本研究介绍了一种新颖的光学工具,该工具有可能显着提高我们对坏死性小肠结肠炎(NEC)中过氧亚硝酸盐(ONOO-)行为的理解。
    This study describes the synthesis and characterization of a novel near-infrared (NIR) fluorescent probe RBNE based on a hybrid rhodamine dye, which shows excellent optical capability for detecting and imaging ONOO- in necrotizing enterocolitis (NEC) mouse model. The probe RBNE undergoes hydrazine redox-process, and subsequently the spirocyclic structure\'s opening, resulting in a turn-on fluorescence emission with the presence of ONOO-, which exhibits several excellent features, including a significant Stokes shift of 108 nm, near-infrared emission at 668 nm, a lower detection limit of 56 nM, low cytotoxicity, and excellent imaging ability for ONOO- both in vitro and in vivo. The presented study introduces a novel optical tool that has the potential to significantly advance our understanding of peroxynitrite (ONOO-) behaviors in necrotizing enterocolitis (NEC).
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  • 文章类型: Journal Article
    肼(N2H4)是化工生产中广泛使用的重要化工原料。然而,由于它的波动性,水溶性,和高毒性,N2H4的气体形式和水溶液都会造成严重的污染,从而对植物产生不利影响,从而造成重大的环境风险。微生物,和人类健康。因此,准确检测环境中的N2H4对于维护公众健康至关重要。在这项研究中,我们合成了一种基于咔唑和半鸟嘌呤基团的比例荧光探针(BCaz-Cy2)。该探针显示出简单的合成程序,快速响应时间,高灵敏度和选择性以及显着的检测信号。它能够有效检测各种基质中的N2H4,例如水,食物,土壤和植物样品,从而显着扩大N2H4探针的应用范围。
    Hydrazine (N2H4) is a crucial chemical raw material extensively utilized in chemical production. However, due to its volatility, water solubility, and high toxicity, both the gaseous form and aqueous solution of N2H4 pose significant environmental risks by causing severe pollution that can adversely impact plants, microorganisms, and human health. Therefore, accurate detection of N2H4 in the environment is imperative for safeguarding public health. In this study, we synthesized a ratiometric fluorescent probe (BCaz-Cy2) based on Carbazole and Hemicyanine groups. This probe exhibits simple synthesis procedure, rapid response time, high sensitivity and selectivity as well as remarkable detection signals. It enables effective detection of N2H4 in various matrices such as water, food, soil and plant samples thereby significantly expanding the scope of applications for N2H4 probes.
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  • 文章类型: Journal Article
    Ghrelin通过选择性激活生长激素促分泌素受体(GHSR)调节多种生物学功能。GHSR激动剂可用于治疗厌食症和恶病质,而拮抗剂和反向激动剂可能代表治疗代谢和物质使用障碍的新药。因此,新的GHSR配体的鉴定和药效学表征是非常感兴趣的。在目前的工作中,无标记的动态质量再分布(DMR)测定已用于评估一组GHSR配体的药理活性。这包括内源性肽ghrelin,去酰基-生长素释放肽和LEAP2(1-14)。在合成化合物中,已经测试了激动剂anamorelin和HM01,拮抗剂HM04和YIL-781以及反向激动剂PF-05190457,以及专利文献中的HM03、R011和H1498。已将DMR结果与在钙动员测定的平行实验中获得的结果进行了比较。Ghrelin,Anamorelin,HM01和HM03表现为有效的全GHSR激动剂。在两种测定中,YIL-781表现为部分GHSR激动剂和R011表现为拮抗剂。LEAP2(1-14)在DMR中产生GHSR反向激动剂,但在钙动员测定中未产生。PF-05190457,HM04和H1498在DMR实验中表现为GHSR反向激动剂,而它们在钙动员研究中充当拮抗剂。总之,这项研究提供了几种GHSR配体在两种不同药理试验中的系统药效学表征。它证明了DMR测定可以成功地特别用于区分拮抗剂和反向激动剂。这项研究可能有助于选择最合适的化合物用于未来的研究。
    Ghrelin modulates several biological functions via selective activation of the growth hormone secretagogue receptor (GHSR). GHSR agonists may be useful for the treatment of anorexia and cachexia, while antagonists and inverse agonists may represent new drugs for the treatment of metabolic and substance use disorders. Thus, the identification and pharmacodynamic characterization of new GHSR ligands is of high interest. In the present work the label-free dynamic mass redistribution (DMR) assay has been used to evaluate the pharmacological activity of a panel of GHSR ligands. This includes the endogenous peptides ghrelin, desacyl-ghrelin and LEAP2(1-14). Among synthetic compounds, the agonists anamorelin and HM01, the antagonists HM04 and YIL-781, and the inverse agonist PF-05190457 have been tested, together with HM03, R011, and H1498 from patent literature. The DMR results have been compared to those obtained in parallel experiments with the calcium mobilization assay. Ghrelin, anamorelin, HM01, and HM03 behaved as potent full GHSR agonists. YIL-781 behaved as a partial GHSR agonist and R011 as antagonist in both the assays. LEAP2(1-14) resulted a GHSR inverse agonist in DMR but not in calcium mobilization assay. PF-05190457, HM04, and H1498 behaved as GHSR inverse agonists in DMR experiments, while they acted as antagonists in calcium mobilization studies. In conclusion, this study provided a systematic pharmacodynamic characterization of several GHSR ligands in two different pharmacological assays. It demonstrated that the DMR assay can be successfully used particularly to discriminate between antagonists and inverse agonists. This study may be useful for the selection of the most appropriate compounds to be used in future studies.
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