CALs

cals
  • 文章类型: Journal Article
    癌症是全世界死亡的主要原因之一,迄今为止没有有效和安全的治疗方法。这项研究是第一个共缀合天然化合物cinchonainIa,具有良好的抗炎活性,和L-天冬酰胺酶(ASNase),具有抗癌潜力,制造纳米脂质体颗粒(CAL)。CAL纳米脂质体复合物的平均尺寸约为118.7nm,zeta电位为-47.00mV,和多分散指数(PDI)为0.120。ASNase和cinchonainIa包封到脂质体中,效率约为93.75%和98.53%,分别。CAL复合物具有很强的协同抗癌效力,二维培养中的组合指数(CI)<0.32,三维模型中的组合指数(CI)<0.44,如NTERA-2癌症干细胞测试。重要的是,CAL纳米颗粒在NTERA-2细胞球状体中对细胞生长表现出优异的抗增殖效率,与cinchonainIa或ASNase脂质体相比,细胞毒性活性增加了30倍和2.5倍以上,分别。CAL还表现出极大增强的抗肿瘤作用,达到约62.49%的肿瘤生长抑制。CALs治疗的肿瘤小鼠存活率为100%,与未治疗对照组的31.2%相比(p<0.01),实验28天后。因此,CAL可能是抗癌药物开发的有效材料。
    Cancer is among the leading causes of death worldwide, with no effective and safe treatment to date. This study is the first to co-conjugate the natural compound cinchonain Ia, which has promising anti-inflammatory activity, and L-asparaginase (ASNase), which has anticancer potential, to manufacture nanoliposomal particles (CALs). The CAL nanoliposomal complex had a mean size of approximately 118.7 nm, a zeta potential of -47.00 mV, and a polydispersity index (PDI) of 0.120. ASNase and cinchonain Ia were encapsulated into liposomes with approximately 93.75% and 98.53% efficiency, respectively. The CAL complex presented strong synergistic anticancer potency, with a combination index (CI) < 0.32 in two-dimensional culture and 0.44 in a three-dimensional model, as tested on NTERA-2 cancer stem cells. Importantly, the CAL nanoparticles demonstrated outstanding antiproliferative efficiency on cell growth in NTERA-2 cell spheroids, with greater than 30- and 2.5-fold increases in cytotoxic activity compared to either cinchonain Ia or ASNase liposomes, respectively. CALs also presented extremely enhanced antitumor effects, reaching approximately 62.49% tumor growth inhibition. Tumorized mice under CALs treatment showed a survival rate of 100%, compared to 31.2% in the untreated control group (p < 0.01), after 28 days of the experiment. Thus, CALs may represent an effective material for anticancer drug development.
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  • 文章类型: Meta-Analysis
    背景:开始静脉注射免疫球蛋白(IVIG)治疗川崎病(KD)的最佳治疗窗口是有争议的。我们旨在总结现有文献,以评估KD患者IVIG治疗的治疗窗口及其与临床结局的相关性。
    方法:我们从开始到2022年8月26日搜索了数据库,没有语言限制。主要结果是初始IVIG抵抗和急性期的冠状动脉病变(CAL)。次要结果是1-2个月随访期间的CAL。
    结果:这项研究纳入了27项研究,涉及41,139名患者。非常低质量的证据表明,在4天内较早的IVIG治疗具有较高的IVIG耐药率(RR,1.80;95%CI,1.50-2.15;P<.00001;I2=75%)比晚期治疗。非常低质量的证据表明,IVIG治疗超过7天与急性期CAL的高风险相关(RR,0.57;95%CI,0.40-0.80;P=.001;I2=76%)。在发病后10天内开始IVIG给药的患者在1-2个月的随访期间CAL的风险较低。
    结论:总体而言,发病7天内的IVIG治疗似乎是IVIG的最佳治疗窗口。发现7天内的IVIG治疗可有效降低KD患者的冠状动脉病变和心脏后遗症的风险。尽管需要设计良好的大型多中心随机试验,但4天内的早期IVIG治疗应警惕IVIG耐药性。
    BACKGROUND: The optimal therapeutic window to start intravenous immunoglobulin (IVIG) for Kawasaki disease (KD) is highly debatable. We aimed to summarize the existing literature to evaluate the therapeutic window of IVIG treatment and its correlation with clinical outcomes in KD patients.
    METHODS: We searched the databases from inception to August 26, 2022, without language restrictions. The primary outcomes were initial IVIG resistance and coronary artery lesions (CALs) in acute phase. Secondary outcome was CALs during 1-2 months of follow-up.
    RESULTS: 27 studies involving 41,139 patients were included in this study. Very low-quality evidence showed that the earlier IVIG treatment within 4 days had a higher IVIG-resistance rate (RR, 1.80; 95% CI, 1.50-2.15; P < .00001; I2 = 75%) than the late treatment. Very low-quality evidence showed that IVIG treatment for more than 7 days was associated with a higher risk of CALs in acute phase(RR, 0.57; 95% CI, 0.40-0.80; P = .001; I2 = 76%). There was a lower risk of CALs during 1-2 months follow-up for those who started IVIG administration within 10 days from the onset.
    CONCLUSIONS: Overall, IVIG treatment within 7 days of illness seems to be the optimal therapeutic window of IVIG. IVIG treatment within 7 days is found to be effective for reducing the risk of coronary artery lesions and cardiac sequelae in KD patients. The early IVIG treatment within 4 days should be vigilant for the IVIG resistance although large multi-center randomized trials with well design are needed.
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  • 文章类型: Journal Article
    背景:护士通常是心脏手术后患者院内心脏骤停的第一反应者。在心脏高级生命支持(CALS)程序中,角色期望和责任的清晰度差可能会阻碍护士的表现。
    目的:寻求有关护士在CALS中的角色和责任的专家共识。
    方法:两轮修改的eDelphi调查。德尔菲项目由指南文献提供信息,对复苏记录和专家访谈的审计。小组成员,从墨尔本大都市的大型三级医疗服务的单个站点中抽取,包括护士,熟悉心脏手术后患者心脏骤停管理的医生和外科医生。
    结果:两轮修改的eDelphi产生了55个响应。在第二轮的41项声明中,有24项达成了超过80%的共识。与护士在逮捕前和逮捕后阶段的角色和责任有关的所有项目达成了共识。相比之下,只有29%(n=4/14)的项目与围捕有关,36%与CALS逮捕中的护士执业范围有关(n=4/11)达成共识。
    结论:该研究的目的仅部分实现。研究结果表明,在心脏骤停之前和之后,护士的角色和责任非常一致,但在实施CALS协议时,护士的角色清晰度有限,如肠外切开术和心脏内部按摩。迫切需要解决护士角色和执业范围的不确定性,这对于认可护士对心脏专业劳动力的贡献至关重要。
    UNASSIGNED:实施CALS协议时护士角色和职责的不确定性可能会阻碍他们的表现,导致患者预后不佳。
    Nurses are often the first responders to in-hospital cardiac arrest in postoperative cardiac surgical patients. Poor clarity about role expectations and responsibilities can hinder nurses\' performance during cardiac advanced life support (CALS) procedures.
    To seek expert consensus on nurses\' roles and responsibilities in CALS for patients in postoperative cardiac surgical patients.
    A two-round modified eDelphi survey. Delphi items were informed by guideline literature, an audit of resuscitation records and expert interviews. Panellists, drawn from a single site of a large tertiary health service in metropolitan Melbourne, included nurses, doctors and surgeons familiar with the management of cardiac arrest in post-operative cardiac surgical patients.
    The two rounds of the modified eDelphi generated 55 responses. A consensus of >80% agreement was reached for 24 of the 41 statements in Round 2. All items related to nurses\' roles and responsibilities during nurses pre- and post-arrest phases reached consensus. In contrast, only 29% (n = 4/14) of items related to peri-arrest, and 36% of those related to nurse scope of practise in CALS arrest (n = 4/11) reached consensus.
    The study\'s aim was only partially achieved. Findings indicate high agreement about nurses\' roles and responsibilities before and immediately after a cardiac arrest, but limited clarity about nurses\' roles when implementing the CALS protocol, such as resternotomy and internal cardiac massage. There is an urgent need to address uncertainty about nurses\' roles and scope of practice in CALS, which is essential to the recognition of nurses\' contribution to the cardiac specialty workforce.
    Uncertainty about nurses \'roles and responsibilities when implementing the CALS protocol may hinder their performance to their full scope of practice, leading to poor patient outcomes.
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  • 文章类型: Journal Article
    未经评估:最近的研究表明,红细胞分布宽度(RDW)已成为心血管疾病的新预测指标。我们的目的是研究RDW与川崎病(KD)儿科患者冠状动脉病变(CAL)风险之间的关系。
    未经批准:KD患者分为CALs组(有CALs的患者)和非CALs组(无CALs的患者)。通过Mann-WhitneyU检验和卡方分析分析各组之间的差异。采用多因素logistic回归分析确定CALs的独立危险因素,然后通过受试者工作特性(ROC)曲线分析计算最佳截止值。
    UNASSIGNED:CALs组的红细胞分布宽度(RDW)和C反应蛋白明显高于非CALs组(p<0.01)。多因素logistic回归分析显示RDW(OR=5.2,95%CI,4.064~6.654)是KD患者CALs的独立危险因素(p<0.01)。亚组分析还证实,在完全和不完全KD患者中,高水平的RDW是CAL发展的独立危险因素。ROC分析表明,RDW预测CAL的最佳临界值>13.86%,灵敏度为75.79%,特异性为92.81%(AUC=0.869,95%CI=0.844-0.892;p<0.0001)。
    UNASSIGNED:RDW是预测KD患者CAL的独立预测因子,具有很高的敏感性和特异性。RDW水平的升高(>13.86%)可用作早期预测急性期KD患者CAL的新生物标志物。
    UNASSIGNED: Recent studies have shown that red blood cell distribution width (RDW) has emerged as a novel predictor of cardiovascular diseases. We aim to investigate the association between RDW and the risk of coronary artery lesions (CALs) in pediatric patients with Kawasaki disease (KD).
    UNASSIGNED: KD patients were classified as the CALs group (patients with CALs) and non-CALs group (patients without CALs). Differences among the groups were analyzed by Mann-Whitney U-test and Chi-square analysis. The independent risk factors of CALs were identified by multivariate logistic regression analysis, followed by receiver operating characteristic (ROC) curve analysis to calculate the optimal cut-off value.
    UNASSIGNED: The red blood cell distribution width (RDW) and C-reactive protein were significantly higher in the CALs group than those in the non-CALs group (p < 0.01). Multivariate logistic regression analysis revealed that RDW (OR = 5.2, 95% CI, 4.064 to 6.654) was independent risk factors of CALs in KD patients (p < 0.01). The subgroup analysis also confirmed that the high level of RDW was an independent risk factor for the development of CALs in patients with complete and incomplete KD. The ROC analysis showed the optimal cut-off value of RDW for predicting CALs was >13.86%, with a sensitivity of 75.79% and specificity of 92.81% (AUC = 0.869, 95% CI = 0.844-0.892; p < 0.0001).
    UNASSIGNED: RDW is an independent predictor with high sensitivity and specificity to predict CALs in KD patients. The elevation in RDW level (>13.86%) may be used as novel biomarkers for early predicting CALs in KD patients during the acute phase.
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  • 文章类型: Journal Article
    结论:通过调节call的沉积,鉴定7种玫瑰科植物中的CalS基因以及PbrCalS5在梨花粉管生长中的功能特征。球囊糖广泛存在于被子植物中,在一系列发育过程中具有重要功能。callose是通过call糖合酶(CalS)合成的。然而,callose合酶基因家族的成员及其进化概况,以及它们的生物学功能,在玫瑰科的物种中仍然未知。在这项研究中,七个玫瑰科物种中的CalS基因家族共有69个成员(Fragariavesca,苹果×家蝇,Prunusavium,Pyrusbretschneideri,李母,鉴定了紫梅和西花红梅),并将其分为六个分支。不同类型的基因复制事件促成了CalS基因家族在7个物种中的扩增,纯化选择在CalS基因的进化中起着关键作用。组织特异性表达模式分析显示,PbrCalS5在梨花粉管中高度表达,并被选择用于进一步的功能分析。亚细胞定位表明PbrCalS5位于质膜和细胞壁中。反义寡脱氧核苷酸(AS-ODN)测定导致PbrCalS5表达的抑制,导致花粉管壁中call体沉积减少,随后抑制了梨花粉管的生长。本研究结果为探索CalS基因在梨花粉管生长中的功能作用提供了理论依据。
    CONCLUSIONS: Identification of CalS genes in seven Rosaceae species and functional characterization of PbrCalS5 in pear pollen tube growth by regulating callose deposition. Callose exists widely in angiosperms and has significant functions in a range of developmental processes. Callose is synthesized by callose synthase (CalS). However, the members of the callose synthase gene family and their evolutionary profiles, along with their biological functions, in species of the Rosaceae remain unknown. In this study, a total of 69 members of the CalS gene family in seven Rosaceae species (Fragaria vesca, Malus × domestica, Prunus avium, Pyrus bretschneideri, Prunus mume, Prunus persica and Rubus occidentalis) were identified and divided into six clades. Different types of gene duplication events contributed to the expansions of the CalS gene family in the seven species, with purifying selection playing a key role in the evolution of the CalS genes. Tissue-specific expression patterns analysis revealed that PbrCalS5 was highly expressed in the pear pollen tube and was selected for further functional analysis. Subcellular localization indicated that PbrCalS5 was localized in the plasma membrane and cell wall. Antisense oligodeoxynucleotide (AS-ODN) assays resulted in the inhibition of PbrCalS5 expression, leading to the decreased callose deposition in the pollen tube wall and subsequent inhibition of pear pollen tube growth. These results provide the theoretical basis for exploring the functional roles of CalS genes in pear pollen tube growth.
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  • 文章类型: Journal Article
    川崎病(KD)是一种病因不明的急性发热性系统性血管炎。在2019年冠状病毒病(COVID-19)大流行之后,一些感染严重急性呼吸道综合症冠状病毒2(SARS-CoV-2)的儿童表现出与KD相似的临床症状,说明KD与SARS-CoV-2有密切关系。因此,我们设计了这项回顾性研究,目的是分析COVID-19大流行前后KD患者的特征.
    我们回顾性收集了2015年1月1日至2020年12月31日温州医科大学附属育英儿童医院KD患者的人口学和实验室数据。温州医科大学育英儿童医院位于中国东部,是该地区最大的儿科心脏病中心,其中包括近1000万人口。我们研究了KD患者的特征,并分析了该地区SARS-CoV-2出现前后这些特征的变化。
    分析揭示了以下新特征:(1)在COVID-19大流行的影响下,川崎病的发病年龄变得更年轻。(2)COVID-19发生后,KD患者的住院天数较流行前缩短。(3)COVID-19发生后,KD患者的白蛋白高于大流行前。(4)COVID-19大流行对川崎病冠状动脉病变(CAL)的发生率没有显着影响。
    COVID-19爆发后,KD患者的特点呈年龄年轻化趋势,住院天数较短,白蛋白水平较高,但CAL的发生率没有明显变化。
    UNASSIGNED: Kawasaki disease (KD) is an acute febrile systemic vasculitis of unknown etiology. After the pandemic of coronavirus disease 2019 (COVID-19), some children infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) showed clinical symptoms similar to KD, indicating a close relationship between KD and SARS-CoV-2. Therefore, we designed this retrospective study to analyze the characteristics of KD patients before and after the COVID-19 pandemic.
    UNASSIGNED: We retrospectively collected demographic and laboratory data of KD patients in Yuying Children\'s Hospital of Wenzhou Medical University from 1 January 2015 to 31 December 2020. Yuying Children\'s Hospital of Wenzhou Medical University is located in eastern China and is the largest pediatric heart disease center in the region, which includes a population of nearly 10 million. We studied the characteristics of KD patients and analyzed the changes in these characteristics before and after the emergence of SARS-CoV-2 in this area.
    UNASSIGNED: The analysis revealed the following novel features: (1) Under the influence of the COVID-19 pandemic, the onset age of Kawasaki disease became younger. (2) After the occurrence of COVID-19, the hospitalization days of KD patients were shorter than before the pandemic. (3) After the occurrence of COVID-19, the albumin of KD patients was higher than before the pandemic. (4) The COVID-19 pandemic did not have a significant effect on the incidence of coronary artery lesions (CALs) in Kawasaki disease.
    UNASSIGNED: After the COVID-19 outbreak, the characteristics of KD patients showed a younger trend of age, shorter hospitalization days and higher levels of albumin, but the incidence of CALs did not change significantly.
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  • 文章类型: Journal Article
    在这项工作中,使用化学修饰的槟榔叶鞘(CALS)作为新型生物吸附剂,研究了从水溶液中切除六价铬(Cr(VI))。用傅里叶变换红外光谱(FTIR)等仪器方法对所制备的吸附剂进行了表征,扫描电子显微镜(SEM),和能量色散光谱(EDS)。几个因素的影响,包括溶液pH值,接触时间,和吸附剂剂量进行了检查,以确定吸附能力的最佳条件。Cr(VI)生物吸附的最佳pH为2.0,并在150min内达到平衡。在动力学研究中,吸附被证明是伪二级的,最大吸附效率的Langmuir等温线为109.89mg/g。用过的生物吸附剂可以容易地再生和再利用。对于铬的氧阴离子的生物吸附,静电吸引和配体交换机制都起着至关重要的作用。从结果来看,CALS似乎是从水中去除Cr(VI)的潜在的低成本有效吸附剂。
    In this work, the excision of hexavalent chromium (Cr(VI)) was studied from an aqueous solution using the chemically modified arecanut leaf sheath (CALS) as a novel bio-adsorbent. The as-prepared adsorbent was characterized by using instrumental methods including Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). The effect of several factors, including solution pH, contact time, and sorbent dosages were examined to identify the optimum condition for the sorption ability. The optimal pH of Cr(VI) biosorption was 2.0, and equilibrium was reached in 150 min. Adsorption was shown to be pseudo-second-order in kinetic investigations, and the Langmuir isotherm with maximal adsorption efficiency was determined as 109.89 mg/g. The spent biosorbent can be easily regenerated and reused. For the biosorption of oxyanions of chromium, both electrostatic attraction and ligand exchange mechanism play critical roles. From the results, the CALS appears to be a potential low-cost effective sorbent to remove Cr (VI) from water.
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  • 文章类型: Journal Article
    Callose plays a critical role in different biological processes including development as well as in the response to multiple biotic and abiotic stresses. In this study, we characterized the callose deposition in cotyledons of different Brassica napus varieties post-inoculated with different Leptosphaeria maculans isolates. Further, members of the callose synthase gene were identified from the whole genome of B. napus using the 12 Arabidopsis thaniana callose synthase protein sequences, and were then classified into three groups based on their phylogenetic relationships. Chromosomal location and duplication patterns indicated uneven distribution and segmental duplication patterns of BnCalS genes in the B. napus genome. Subsequently, gene structures, conserved domains analysis, and protein properties were analyzed for BnCalS genes. In addition, 12 B. napus orthologs of the AtCalS were selected for investigating the tissue expression pattern, indicating diverse expression patterns for these BnCalS genes. Responses of the selected 12 orthologs and all the BnCalS genes were characterized in the different types (AvrLm1-Rlm1, AvrLm4-Rlm4, AvrLepR1-LepR1) of B. napus⁻L. maculans interactions and B. napus-Leptosphaeria biglobosa interactions, implying their potential roles in response to Leptosphaeria infection.
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  • 文章类型: Journal Article
    Schistosomiasis, one of the neglected tropical diseases, is endemic in more than 70 countries. However, the clinical diagnosis of patients with a low degree of infection is an unsolved technical problem. In areas endemic for schistosomiasis japonica, proctoscopy detection of eggs has been one method used for clinical diagnosis. However, it is often a challenge to find typical live eggs and it is difficult to distinguish live eggs from large numbers of partially degraded and/or completely degraded eggs within colon biopsy tissue. To address this problem, we tested six different morphological and biochemical/molecular markers (ALP; morphological characteristics of egg; CalS (calcified substance); AOS (antioxidase); SDHG (succinic dehydrogenase) and SjR2 mRNA (retrotransposons 2 of S.japonicum genome mRNA)), including four new markers (CalS; AOS; SDHG and SjR2 mRNA.), to determine the viability of S. japonicum eggs deposited in human and mouse colon tissues. Our ultimate aim is to obtain a new method that is more sensitive, practical and accurate to clinically diagnose schistosomiasis.
    Tissue samples were collected from mice at six different time points during S. japonicum infection with or without treatment with praziquantel (PZQ). Four new biochemical or molecular markers were used for the detection of egg viability from mouse liver and intestinal samples: CalS; AOS; SDHG and SjR2 mRNA. Subsequently, all markers were employed for the detection and analysis of eggs deposited in biopsy materials from patients with suspected schistosomiasis japonica for clinical evaluation. Microscopic examination of the egg morphology, worm burden in vivo and ALP (alkaline phosphatase) levels were used as a reference standard to evaluate the sensitivity and reliability of four new markers detecting egg viability.
    The results of the study showed that the morphology of S. japonicum eggs deposited in tissues of hosts with schistosomiasis, especially cases with chronic schistosomiasis, is complex and egg viability is difficult to judge morphologically, particularly eggs with a fuzzy structure or partially modified eggs. We found that the majority of the viable schistosome eggs determined by four new markers (CalS, AOS, SDHG and SjR2 mRNA) were morphologically difficult to identify.
    Among the markers, the most sensitive and specific method was the detection of SjR2 mRNA and the most simple, rapid and practical method was the detection of SDHG. Therefore, the detection of SDHG is the most practical for clinical application and its use could improve the accuracy in diagnosing active schistosome infection.
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  • 文章类型: Journal Article
    乙酰羟酸合酶,硫胺素二磷酸依赖性酶,可以缩合两个丙酮酸分子以形成用于合成L-缬氨酸和L-亮氨酸的乙酰乳酸或具有2-酮丁酸的丙酮酸以形成用于合成L-异亮氨酸的乙酰羟基丁酸。由于植物中存在支链氨基酸生物合成途径中乙酰羟酸合酶催化的关键反应,真菌,古细菌,和细菌,但不是在动物身上,乙酰羟酸合酶成为开发新型除草剂和抗微生物化合物的潜在目标。在这篇文章中,进化,结构,并对乙酰羟酸合酶的催化机理进行了综述。
    Acetohydroxyacid synthase, a thiamine diphosphate-dependent enzyme, can condense either two pyruvate molecules to form acetolactate for synthesizing L-valine and L-leucine or pyruvate with 2-ketobutyrate to form acetohydroxybutyrate for synthesizing L-isoleucine. Because the key reaction catalyzed by acetohydroxyacid synthase in the biosynthetic pathways of branched-chain amino acids exists in plants, fungi, archaea, and bacteria, but not in animals, acetohydroxyacid synthase becomes a potential target for developing novel herbicides and antimicrobial compounds. In this article, the evolution, structure, and catalytic mechanism of acetohydroxyacid synthase are summarized.
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