GC-MS, gas chromatography-mass spectrometry

GC - MS,气相色谱 - 质谱法
  • 文章类型: Journal Article
    UNASSIGNED:反射式实验室检测工作流程可以改善对长期接受止痛药患者的评估,但是需要病理学家输入和解释的复杂工作流程可能无法得到传统实验室信息系统的良好支持。在这项工作中,我们描述了Web应用程序的开发,该应用程序可以提高病理学家和实验室人员提供可操作毒理学结果的效率。
    UNASSIGNED:在设计应用程序之前,我们着手了解整个工作流程,包括实验室工作流程和病理学家审查。此外,我们收集了利益相关者的要求和规范。最后,为了评估应用程序实施的性能,我们调查了利益相关者,并记录了工作流程每个步骤所需的大致时间。
    UNASSIGNED:选择基于Web的应用程序是为了便于用户访问。常规接收相关临床数据并在应用中显示。实验室和解释过程中的工作流程是用户界面的基础。随着自动归档软件的增加,投资回报显著。实验室通过自动化文件管理和结果输入,及时节省了相当于一名全职员工的费用。
    UNASSIGNED:在临床病理学实践中实施专门构建的应用程序以支持反射和解释工作流程,从而显著提高了实验室效率。定制和专门构建的应用程序可以帮助减少员工倦怠,减少转录错误,并允许员工专注于更关键的质量问题。
    UNASSIGNED: Reflexive laboratory testing workflows can improve the assessment of patients receiving pain medications chronically, but complex workflows requiring pathologist input and interpretation may not be well-supported by traditional laboratory information systems. In this work, we describe the development of a web application that improves the efficiency of pathologists and laboratory staff in delivering actionable toxicology results.
    UNASSIGNED: Before designing the application, we set out to understand the entire workflow including the laboratory workflow and pathologist review. Additionally, we gathered requirements and specifications from stakeholders. Finally, to assess the performance of the implementation of the application, we surveyed stakeholders and documented the approximate amount of time that is required in each step of the workflow.
    UNASSIGNED: A web-based application was chosen for the ease of access for users. Relevant clinical data was routinely received and displayed in the application. The workflows in the laboratory and during the interpretation process served as the basis of the user interface. With the addition of auto-filing software, the return on investment was significant. The laboratory saved the equivalent of one full-time employee in time by automating file management and result entry.
    UNASSIGNED: Implementation of a purpose-built application to support reflex and interpretation workflows in a clinical pathology practice has led to a significant improvement in laboratory efficiency. Custom- and purpose-built applications can help reduce staff burnout, reduce transcription errors, and allow staff to focus on more critical issues around quality.
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  • 文章类型: Journal Article
    如今,病毒感染被认为是全世界死亡的主要原因,如covid-19大流行。在这种情况下,寻找抗病毒药物是研究人员的主要兴趣。在这项研究中,薰衣草(薰衣草)和丹参(丹参)的精油(EO)与禽流感H5N1病毒作斗争。进行实验室试验以鉴定薰衣草和丹参EO并评估其抗氧化剂,抗H5N1禽流感病毒的抗炎和抗病毒活性。EO是通过空气干燥的植物的加氢蒸馏制备的,并通过GC-MS方法进行分析。结果表明,丹参的EO产量最高,为1.3%,而薰衣草为1%。薰衣草EO的主要成分是醋酸芳酯和芳樟醇,而樟脑和α-thujone是丹参的主要成分。两种油在DPPH和ABTS以及总抗氧化能力测定中均表现出抗氧化活性。结果表明,使用丹参和薰衣草EO作为有效的天然抗炎,抗氧化剂和抗病毒剂。
    Nowadays, viral infection is considered a major cause of mortality all over the world such as covid-19 pandemic. In this context, searching for antiviral agents are major researchers interests. In this study, essential oils (EO) of Lavandula angustifolia (lavender) and Salvia officinalis (salvia) were subjected to combat avian influenza H5N1 virus. Laboratory trials were performed to identify Lavender and salvia EOs and evaluate their antioxidant, anti-inflammatory and antiviral activity against an avian influenza H5N1 virus. EOs were prepared by the hydrodistillation of air-dried plants and analyzed by GC-MS methods. The results revealed that salvia has the highest EOs yield 1.3% than lavender 1%. The dominant constituents of lavender EO were linalyl acetate and linalool while camphor and α-thujone were the dominant compounds of salvia. Both oils exhibited antioxidant activity in DPPH and ABTS and total antioxidant capacity assays. The results suggest the use of salvia and lavender EOs as effective natural anti-inflammatory, antioxidant and antiviral agents.
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  • 文章类型: Journal Article
    UNASSIGNED:细胞凋亡是疟疾的常见病理,大多数抗疟药物在化疗期间诱导细胞凋亡。Globimetulabraunii是一种非洲槲寄生,用于治疗疟疾,但其对线粒体介导的细胞凋亡的影响尚不清楚。
    UNASSIGNED:通过将NK65菌株伯氏疟原虫感染的红细胞腹膜内注射到用分级剂量(100-400mg/kg)的甲醇提取物(ME)处理的小鼠中,和正己烷的馏分,二氯甲烷,乙酸乙酯和甲醇(HF,DF,EF和MF)确认寄生虫血症后9天。使用阿替喹(10mg/kg)作为对照药物。在确认寄生虫血症后,使用具有最高抗疟原虫活性的部分(相同剂量)连续5天治疗感染氯喹抗性(ANKA)菌株的小鼠。P-alaxin(10mg/kg)用作对照药物。在治疗的最后一天,分离肝线粒体,线粒体通透性转换(mPT)孔开放,线粒体F0F1ATP酶(mATPase)活性,脂质过氧化(mLPO)和肝脏脱氧核糖核酸(DNA)片段通过分光光度法进行评估。通过酶联免疫吸附测定(ELISA)技术测定胱天蛋白酶3和9。细胞色素c,P53,Bcl-2相关X蛋白(Bax),和B细胞淋巴瘤-2(Bcl2)通过免疫组织化学确定。通过气相色谱-质谱(GC-MS)分析确定了金钱草粗甲醇提取物的植物化学成分。
    未经证实:疟疾寄生虫有大幅度的mPT诱导,globimetulabraunii的提取物和部分。在400毫克/千克,HF显著(p<0.01)下调mATPase活性,和mLPO(易感和抗性)模型,导致DNA片段化(P<0.0001),诱导半胱天冬酶激活,P53,bax和细胞色素c释放,但在两个模型中下调Bcl2。对金钱草甲醇提取物的GC-MS分析表明,α-amyrin是最丰富的植物化学物质。
    UASSIGNED:布劳尼的正己烷部分通过线粒体孔的开放诱导线粒体介导的细胞凋亡,基因组DNA片段化,P53,bax,胱天蛋白酶3和9的激活和细胞色素c的释放伴随着Bcl2水平的降低。α-Amyrin是具有凋亡作用的三萜。
    UNASSIGNED: Apoptosis is a common pathology in malaria and most antimalarial drugs induce apoptosis during chemotherapy. Globimetula braunii is an African mistletoe used for the treatment of malaria but its effect on mitochondria-mediated apoptosis is not known.
    UNASSIGNED: Malarial infection was induced by the intraperitoneal injection of NK 65 strain Plasmodium berghei-infected erythrocytes into mice which were treated with graded doses (100-400 mg/kg) of methanol extract (ME), and fractions of n-hexane, dichloromethane, ethylacetate and methanol (HF, DF, EF and MF) for 9 days after the confirmation of parasitemia. Artequine (10 mg/kg) was used as control drug. The fraction with the highest antiplasmodial activity was used (same dose) to treat mice infected with chloroquine-resistant (ANKA) strain for 5 consecutive days after the confirmation of parasitemia. P-alaxin (10 mg/kg) was used as control drug. On the last day of the treatment, liver mitochondria were isolated and mitochondrial Permeability Transition (mPT) pore opening, mitochondrial F0F1 ATPase (mATPase) activity, lipid peroxidation (mLPO) and liver deoxyribonucleic acid (DNA) fragmentation were assessed spectrophotometrically. Caspases 3 and 9 were determined by Enzyme-Linked Immunosorbent Assay (ELISA) technique. Cytochrome c, P53, Bcl-2-associated X protein (Bax), and B-cell lymphoma-2 (Bcl2) were determined via immunohistochemistry. Phytochemical constituents of the crude methanol extract of Globimetula braunii were determined via the Gas Chromatography-Mass Spectrometry (GC-MS) analysis.
    UNASSIGNED: There was large amplitude mPT induction by malaria parasites, extract and fractions of Globimetula braunii. At 400 mg/kg, HF significantly (p < 0.01) downregulated mATPase activity, and mLPO in both (susceptible and resistant) models, caused DNA fragmentation (P < 0.0001), induced caspases activation, P53, bax and cytochrome c release but downregulated Bcl2 in both models. The GC-MS analysis of methanol extract of Globimetula braunii showed that α-amyrin is the most abundant phytochemical.
    UNASSIGNED: The n-hexane fraction of Globimetula braunii induced mitochondrial-mediated apoptosis through the opening of the mitochondrial pore, fragmentation of genomic DNA, increase in the levels of P53, bax, caspase 3 and 9 activation and cytochrome c release with concomitant decrease in the level of Bcl2. α-Amyrin is a triterpene with apoptotic effects.
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  • 文章类型: Journal Article
    中医是解开中华文明瑰宝的钥匙。中药及其复方在医疗活动中发挥有益作用,特别是在全球范围内的新型冠状病毒流行等重大公共卫生事件中。中药配方中的化学成分复杂多样,但它们的有效物质类似于“神秘盒子”。揭示其活性成分及其作用机理已成为中药学家研究的重点和难点。尽管现有的研究方法很多,并且不断迭代更新,仍然缺乏前瞻性审查。因此,本文在以往研究的基础上,从体外到体内的角度,全面介绍了现有的新方法和技术。此外,还揭示了中药配方有效物质研究的瓶颈。尤其是,我们展望新的观点,未来发展的技术和应用。这项工作基于新的视角进行了回顾,为未来的研究开辟了视野。因此,中药复方药物研究应在追求领域创新的同时,继承中药的精髓。
    Traditional Chinese medicine (TCM) is the key to unlock treasures of Chinese civilization. TCM and its compound play a beneficial role in medical activities to cure diseases, especially in major public health events such as novel coronavirus epidemics across the globe. The chemical composition in Chinese medicine formula is complex and diverse, but their effective substances resemble \"mystery boxes\". Revealing their active ingredients and their mechanisms of action has become focal point and difficulty of research for herbalists. Although the existing research methods are numerous and constantly updated iteratively, there is remain a lack of prospective reviews. Hence, this paper provides a comprehensive account of existing new approaches and technologies based on previous studies with an in vitro to in vivo perspective. In addition, the bottlenecks of studies on Chinese medicine formula effective substances are also revealed. Especially, we look ahead to new perspectives, technologies and applications for its future development. This work reviews based on new perspectives to open horizons for the future research. Consequently, herbal compounding pharmaceutical substances study should carry on the essence of TCM while pursuing innovations in the field.
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  • 文章类型: Journal Article
    和目的:术后腹内粘连带的形成可能导致严重的并发症。本研究旨在评价乳香正己烷提取物(FHE)局部给药对术后粘连带形成的预防作用。
    从Boswelliasacra树的树脂中提取FHE,并通过气相色谱-质谱(GC-MS)鉴定其成分。在动物模型中,应用FHE后TNF-α和TGF-β1细胞因子的表达水平进行评估,以检查炎症和纤维化线索,分别。
    FHE化合物分析后,体内实验表明,术中局部施用FHE可防止粘连带形成。FHE处理组的粘附等级显著低于阴性对照(NC)和阳性对照(Interceed)。通过组织病理学观察到的炎性细胞的浸润揭示了FHE的显著抗炎潜力。此外,基因表达结果证明,TNF-α和TGF-β1的显着抑制是其抗粘附特性的原因。
    该研究报道了FHE作为预防粘连带的软膏的潜力。
    UNASSIGNED: and purpose: The formation of postoperative intra-abdominal adhesion band formation may lead to severe complications. This study aimed to evaluate the preventive effect of local administration of frankincense n-hexane extract (FHE) on the formation of postsurgical adhesion bands.
    UNASSIGNED: FHE was extracted from the resin of a Boswellia sacra tree and its components were identified by gas chromatography-mass spectrometry (GC-MS). In an animal model, the expression levels of TNF-α and TGF-β1 cytokines after application of FHE were assessed to check the inflammatory and fibrotic cues, respectively.
    UNASSIGNED: Following FHE compound analysis, in vivo experiments demonstrated that intraoperative local administration of FHE resulted in the prevention of adhesion band formation. The adhesion grades in the FHE-treated group were significantly lower than those in the negative control (NC) and the positive control (Interceed). The infiltration of inflammatory cells observed by histopathology revealed a significant anti-inflammatory potential of FHE. Furthermore, the gene expression results proved that significant suppression of TNF-α and TGF-β1 was responsible for its antiadhesion properties.
    UNASSIGNED: The study reported the potential of FHE as an ointment for the prevention of adhesion bands.
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  • 文章类型: Journal Article
    通过阴离子交换色谱和凝胶渗透色谱从颗粒子实体中纯化了水溶性杂多糖(SGP2-1)。通过高效凝胶渗透色谱法分析了其结构特征,高效液相色谱法,傅里叶变换红外光谱,气相色谱-质谱,核磁共振波谱.使用RAW264.7巨噬细胞研究免疫刺激活性。结果表明,重均分子量为150.75kDa的SGP2-1由甘露糖组成,葡萄糖,和木糖.SGP2-1的主链主要由→4)-α-Glcp-(1→,末端基团α-d-Glcp→通过O-6位与主链连接。SGP2-1能显著增强胞吞能力,活性氧的产生,和细胞因子分泌。SGP2-1通过与toll样受体2相互作用并激活丝裂原活化蛋白激酶发挥免疫调节作用,磷脂酰肌醇-3-激酶/蛋白激酶B,和核因子-κB信号通路。这些发现表明SGP2-1可以作为潜在的免疫调节剂用于功能性食品中。
    A water-soluble heteropolysaccharide (SGP2-1) was purified from Suillus granulatus fruiting bodies by anion-exchange chromatography and gel permeation chromatography. The structural characteristics were analyzed by high-performance gel permeation chromatography, high-performance liquid chromatography, Fourier transform infrared spectroscopy, gas chromatography-mass spectrometry, and nuclear magnetic resonance spectroscopy. The immunostimulatory activity was investigated using RAW 264.7 macrophages. Results showed that SGP2-1 with weight average molecular weight of 150.75 kDa was composed of mannose, glucose, and xylose. The backbone of SGP2-1 was mainly composed of → 4)-α-Glcp-(1→, and the terminal group α-d-Glcp → was linked to the main chain by O-6 position. SGP2-1 could significantly enhance pinocytic capacity, reactive oxygen species production, and cytokines secretion. SGP2-1 exerted immunomodulatory effects through interacting with toll-like receptor 2, and activating mitogen-activated protein kinase, phosphatidylinositol-3-kinase/protein kinase B, and nuclear factor-kappa B signaling pathways. These findings indicated that SGP2-1 could be explored as a potential immunomodulatory agent for application in functional foods.
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  • 文章类型: Journal Article
    临床实验室中通常采用免疫测定和液相色谱-串联质谱测定来测量血清中的总睾酮。由于通过免疫测定对干扰物质的校准和/或无意检测的差异,从这些方法中的任一种获得的结果比较差。标准化工作正在进行中,但是最近的研究表明,准确性仍然是一个问题。
    本研究比较了四种独立开发和验证的总睾酮LC-MS/MS测定的结果。使用国家标准和技术研究所标准参考材料971验证每个测定的校准。
    最初,四种检测方法之一的平均百分比差异为+11.44%,与所有方法平均值相比,但在使用NISTSRM971对所有5种非零校准物浓度进行重新验证后,平均百分比差异降至-4.88%.随后,所有四个试验之间的一致性显示,在所有睾酮浓度范围内(0.13-38.10nmol/L;3.7-1098ng/dL)的平均偏差<5%,包括在<1nmol/L(<29ng/dL)的低浓度下。
    四个独立开发的LC-MS/MS测定之间的优异一致性表明使用标准参考材料的协调是可实现的。然而,正如我们在这项研究中发现的,为了确保准确校准,验证新一批校准品的浓度至关重要。
    UNASSIGNED: Immunoassays and liquid chromatography-tandem mass spectrometry assays are commonly employed in clinical laboratories for measurement of total testosterone in serum. Results obtained from either of these methodologies compare poorly due to differences in calibration and/or inadvertent detection of interfering substances by the immunoassays. Standardization efforts are underway, but recent studies indicate that accuracy remains an issue.
    UNASSIGNED: This study compares the results from four independently developed and validated LC-MS/MS assays for total testosterone. The calibration for each assay was verified using National Institute of Standards and Technology Standard Reference Material 971.
    UNASSIGNED: Initially, one of the four assays had a mean percent difference of +11.44%, compared to the All Method Mean, but following re-verification of all five non-zero calibrator concentrations with the NIST SRM 971, the mean percent difference decreased to -4.88%. Subsequently, the agreement between all four assays showed a mean bias of <5% across the range of all testosterone concentrations (0.13-38.10 nmol/L; 3.7-1098 ng/dL), including at low concentrations of <1 nmol/L (<29 ng/dL).
    UNASSIGNED: Excellent agreement between four independently developed LC-MS/MS assays demonstrates that harmonization using standard reference material is attainable. However, as we found in this study, to ensure accurate calibration it is critical to validate the concentrations of new lots of calibrators.
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  • 文章类型: Journal Article
    鉴于多个神经生物学系统,以及这些系统中的组件受到压力的影响,并可能在添加剂中相互作用,代偿和协同方式来促进或减轻PTSD风险,严重程度,和恢复,我们认为考虑集体是很重要的,以及这些神经生物学系统对创伤后应激障碍风险的单独影响。有了这个目标,我们进行了概念验证研究,利用从未用药的脑脊液(CSF),无烟草和非法物质的男性患有PTSD(n=13)和创伤暴露的健康对照(TC)(n=17)。根据先前的研究,分析了13种被认为与PTSD风险或严重程度有关的神经生物学因素。由于这项腰椎穿刺研究的样本量虽小但典型,限制了分层回归模型中可以考虑的因素数量,我们仅包括与临床医生-管理的PTSD量表(CAPS-IV)评分至少中等相关性(Spearmanrho>0.30)的五个因素,这并不违反多重共线性标准。满足这些标准的五个因素中的三个-CSF别孕烯醇酮和孕烯醇酮(AlloPA:孕酮的等能GABA能代谢产物),神经肽Y(NPY),发现白细胞介素-6(IL-6)占CAPS-IV评分方差的75%以上(R2=0.766,F=8.75,p=0.007)。CSFAlloPA水平与PTSD严重程度呈负相关(β=-0.523,p=0.02),占CAPS-IV评分差异的47%。CSFNPY与PTSD严重程度呈正相关(β=0.410,p=0.04),占CAPS-IV方差的14.7%。PTSD严重程度与CSFIL-6水平呈正相关,占PTSD严重程度差异的15.3%(β=0.423,p=0.05)。然后为三个预测因素中的每一个计算Z得分,并用于描述在个体PTSD患者水平上每个对PTSD严重程度有贡献的不同相对程度。这是同类中的第一个,概念验证研究在更大的样本中具有复制性。然而,它强调了神经生物学系统失调对创伤后应激障碍症状严重程度的集体影响,以及创伤后应激障碍患者个体间潜在生物学治疗目标的异质性,从而支持了在创伤后应激障碍治疗开发和处方方面对精准医学方法的需求.
    Given that multiple neurobiological systems, as well as components within these systems are impacted by stress, and may interact in additive, compensatory and synergistic ways to promote or mitigate PTSD risk, severity, and recovery, we thought that it would be important to consider the collective, as well as separate effects of these neurobiological systems on PTSD risk. With this goal in mind, we conducted a proof-of-concept study utilizing cerebrospinal fluid (CSF) collected from unmedicated, tobacco- and illicit substance-free men with PTSD (n = 13) and trauma-exposed healthy controls (TC) (n = 17). Thirteen neurobiological factors thought to contribute to PTSD risk or severity based on previous studies were assayed. As the small but typical sample size of this lumbar puncture study limited the number of factors that could be considered in a hierarchical regression model, we included only those five factors with at least a moderate correlation (Spearman rho > 0.30) with total Clinician-Administered PTSD Scale (CAPS-IV) scores, and that did not violate multicollinearity criteria. Three of the five factors meeting these criteria-CSF allopregnanolone and pregnanolone (Allo + PA: equipotent GABAergic metabolites of progesterone), neuropeptide Y (NPY), and interleukin-6 (IL-6)-were found to account for over 75% of the variance in the CAPS-IV scores (R2 = 0.766, F = 8.75, p = 0.007). CSF Allo + PA levels were negatively associated with PTSD severity (β = -0.523, p = 0.02) and accounted for 47% of the variance in CAPS-IV scores. CSF NPY was positively associated with PTSD severity (β = 0.410, p = 0.04) and accounted for 14.7% of the CAPS-IV variance. There was a trend for a positive association between PTSD severity and CSF IL-6 levels, which accounted for 15.3% of the variance in PTSD severity (β = 0.423, p = 0.05). Z-scores were then computed for each of the three predictive factors and used to depict the varying relative degrees to which each contributed to PTSD severity at the individual PTSD patient level. This first of its kind, proof-of-concept study bears replication in larger samples. However, it highlights the collective effects of dysregulated neurobiological systems on PTSD symptom severity and the heterogeneity of potential biological treatment targets across individual PTSD patients-thus supporting the need for precision medicine approaches to treatment development and prescribing in PTSD.
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  • 文章类型: Journal Article
    本文提供的数据描述了多糖的特征,指定为CM1和CMS,从C的子实体分离。采用傅里叶变换红外光谱分析鉴定多糖的基本特征和甲基化完全性。进行气相色谱-串联质谱和核磁共振波谱分析以揭示CM1和CMS的糖苷键。进一步的解释和讨论可以在我们的研究文章中找到,题为“结构表征和胆固醇外排改善来自蛹虫草的新型多糖的能力”(Hu等人。,2019;https://doi.org/10.1016/j。ijbiomac.2019.03.078)[1]。
    The data presented in this article describe characteristics of the polysaccharides, designated as CM1 and CMS, isolated from the fruiting body of C. militaris. Fourier transform infrared spectrometry analysis was used to identify the basic characteristics of the polysaccharides and the completeness of methylation. Gas chromatography-tandem mass spectrometry and nuclear magnetic resonance spectroscopy were carried out to reveal the glycosidic linkages of CM1 and CMS. Further interpretation and discussion could be found at our research article entitled \"Structural characterisation and cholesterol efflux improving capacity of the novel polysaccharides from Cordyceps militaris\" (Hu et al., 2019; https://doi.org/10.1016/j.ijbiomac.2019.03.078) [1].
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  • 文章类型: Journal Article
    通过提供支持发芽后立即生长的碳骨架,储存油分解在许多植物的生命周期中起着重要作用。1-丁醇,磷脂酶D(PLD)依赖的信号分子磷脂酸(PA)产生的特异性抑制剂,抑制拟南芥种子萌发。N-酰基乙醇胺(NAE),已被证明可以抑制PLDα1的活性,对种子萌发没有影响。然而,尚未报道由每种化合物诱导的三酰基甘油(TAG)的动员曲线。为了更深入地了解NAE12:0或1-丁醇处理期间TAG的动员模式,我们对NAE12:0,DMSO,1-丁醇和叔丁醇对拟南芥种子萌发和脂肪酸组成的影响,叔丁醇和DMSO分别作为相应的对照处理。我们的数据显示,1-丁醇,但不是无活性的叔丁醇异构体,抑制拟南芥种子萌发,这伴随着三酰基甘油(TAG)的动员的延迟。相比之下,NAE12:0不影响TAG的动员,通过胚根和子叶的出现监测,它也没有显着延迟种子的发芽。1-丁醇诱导种子和幼苗中的RNA降解。我们推测,在1-丁醇的诱导下,RNA的大规模降解可能导致种子萌发必需基因的异常表达,包括动员油体所需的基因,从而导致种子发芽的延迟。据我们所知,我们首次报道1-丁醇延迟了TAG的动员。
    Storage oil breakdown plays an important role in the life cycle of many plants by providing the carbon skeletons that support seedling growth immediately following germination. 1-Butanol, a specific inhibitor of phospholipase D (PLD)-dependent production of the signalling molecule phosphatidic acid (PA), inhibited Arabidopsis seed germination. N-Acylethanolamines (NAEs), which have been shown to inhibits PLDα1 activity, have no effect on seed germination. However, mobilization profile of triacylglycerols (TAG) that induced by each compound has not been reported. To gain deeper insights into the mode of mobilization of TAG during NAE 12:0 or 1-butanol treatment, we conducted a detailed comparative analysis of the effect of NAE 12:0, DMSO, 1-butanol and tert-butanol on Arabidopsis seed germination and fatty acid composition, tert-butanol and DMSO served as the corresponding controls treatment respectively. Our data show that 1-butanol, but not the inactive tert-butanol isomer, inhibited Arabidopsis seed germination, which is accompanied by a with retardation of the mobilization of triacylglycerols (TAG). In contrast, NAE 12:0 did not affect mobilization of TAG, nor did it significantly delay seed germination as monitored by radicle and cotyledon emergence. 1-Butanol induced RNA degradation in seeds and seedlings. We speculate that the large-scale degradation of RNA under the induction of 1-butanol may lead to abnormal gene expression in genes necessary for seed germination, including the genes needed for the mobilization of oil bodies, and thus cause a delay of seed germination. To the best of our knowledge, we report for the first time that 1-butanol delays the mobilization of TAG.
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