Curcuma

姜黄
  • 文章类型: Journal Article
    研究人员越来越有兴趣发现新的胰脂肪酶抑制剂作为抗肥胖成分。药物和食品同源植物含有一组不同的天然生物活性化合物,具有很好的开发潜力。这项研究使用亲和超滤结合光谱学和对接模拟,从20种常用的药物和食品同源植物中筛选并鉴定了有效的胰脂肪酶抑制剂。结果表明,姜黄表现出最高的胰脂肪酶抑制活性,还有姜黄素,去甲氧基姜黄素,发现双去甲氧基姜黄素是姜黄提取物中有效的胰脂肪酶抑制剂,IC50值为0.52±0.04、1.12±0.05和3.30±0.08mg/mL,分别。此外,酶动力学分析表明,三种姜黄素的抑制类型是可逆竞争模型,与去甲氧基姜黄素或双去甲氧基姜黄素相比,姜黄素表现出更高的结合亲和力和对胰脂肪酶二级结构的更大影响,通过荧光光谱和圆二色性观察到。此外,对接模拟支持上述实验结果,揭示了三种姜黄素可能通过非共价作用与胰脂肪酶结合袋中的氨基酸残基相互作用,如氢键和π-π堆叠,从而抑制胰脂肪酶。总的来说,这些发现表明姜黄的生物活性化合物,尤其是姜黄素,可以很有前途的饮食胰脂肪酶抑制剂用于预防和管理肥胖。
    Researchers are increasingly interested in discovering new pancreatic lipase inhibitors as anti-obesity ingredients. Medicine-and-food homology plants contain a diverse set of natural bioactive compounds with promising development potential. This study screened and identified potent pancreatic lipase inhibitors from 20 commonly consumed medicine-and-food homology plants using affinity ultrafiltration combined with spectroscopy and docking simulations. The results showed that turmeric exhibited the highest pancreatic lipase-inhibitory activity, and curcumin, demethoxycurcumin, and bisdemethoxycurcumin were discovered to be potent pancreatic lipase inhibitors within the turmeric extract, with IC50 values of 0.52 ± 0.04, 1.12 ± 0.05, and 3.30 ± 0.08 mg/mL, respectively. In addition, the enzymatic kinetics analyses demonstrated that the inhibition type of the three curcuminoids was the reversible competitive model, and curcumin exhibited a higher binding affinity and greater impact on the secondary structure of pancreatic lipase than found with demethoxycurcumin or bisdemethoxycurcumin, as observed through fluorescence spectroscopy and circular dichroism. Furthermore, docking simulations supported the above experimental findings, and revealed that the three curcuminoids might interact with amino acid residues in the binding pocket of pancreatic lipase through non-covalent actions, such as hydrogen bonding and π-π stacking, thereby inhibiting the pancreatic lipase. Collectively, these findings suggest that the bioactive compounds of turmeric, in particular curcumin, can be promising dietary pancreatic lipase inhibitors for the prevention and management of obesity.
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  • 文章类型: Journal Article
    姜黄根茎(姜黄)和黑孜然种子(Nigellasativa)是用于治疗尼日利亚民族医学中的癌症和其他慢性炎症性疾病的多草药成分。以前的研究表明,抗氧化剂,抗炎,和个体植物提取物的抗癌活性。然而,这两种香料的结合形式并没有在生物学上得到强化。因此,这项研究从组合香料中获得精油(EOs),并评估其对自由基的抑制作用,蛋白质变性,和癌症扩散。通过加氢蒸馏(HD)提取EO,并通过气相色谱-质谱(GC-MS)进行表征。基于DPPH进行体外抗氧化评估,过氧化氢(H2O2),一氧化氮(NO),和铁离子(Fe3+)自由基清除试验。在MTT细胞活力测定后,测定了油对非致瘤细胞系(HEK293)和癌性细胞系(HepG2和HeLa)的细胞毒性。还进行了油成分的硅分子对接分析。提供了六批EOsI-VI,由22个主要成员组成,芳香的Ar-姜黄酮是最突出的化合物。在重复HD和作为组合时,油的生物活性有显著改善。批次VI油表现出最好的活性,对HepG2细胞系的细胞毒性(CC50)为10.16±1.69µg/100µL,与5-氟尿嘧啶(标准,CC50=8.59±1.33µg/100µL)。在硅分子对接中建议δ-姜黄烯,Ar-姜黄烯,Ar-turmerol,和Ar-姜黄酮在有希望的化合物中,基于它们与NOX2,NF-κB的高结合能分数,和mdm2蛋白质。总之,来自姜黄黑孜然的油组合具有相当大的抑制自由基的能力,蛋白质变性,和癌症扩散。这项研究的发现进一步强调了姜黄黑孜然作为多草药成分的有效性。
    Turmeric rhizomes (Curcuma longa) and black cumin seeds (Nigella sativa) are polyherbal ingredients used for the management of cancer and other chronic inflammatory diseases in Nigerian ethnomedicine. Previous studies have shown the antioxidant, anti-inflammatory, and anticancer activities of the individual plant extracts. However, the two spices have not been biologically potentiated in their combined form. Therefore, this study obtained essential oils (EOs) from the combined spices and evaluated their inhibitory effects on free radicals, protein denaturation, and cancer proliferation. The EOs were extracted by hydro-distillation (HD) and characterized by gas chromatography-mass spectrometry (GC-MS). In vitro antioxidant assessment was conducted based on DPPH, hydrogen peroxide (H2O2), nitric oxide (NO), and ferric ion (Fe3+) radical scavenging assays. The cytotoxicity of the oil against non-tumorigenic (HEK293) and cancerous (HepG2 and HeLa) cell lines was determined following the MTT cell viability assay. An in silico molecular docking analysis of the oil constituents was also performed. Six batches of EOs I-VI were afforded, comprising twenty-two major constituents, with aromatic Ar-turmerone being the most prominent compound. There was a marked improvement in the bioactivity of the oils upon repeated HD and as a combination. The batch VI oil exhibited the best activity, with a cytotoxicity (CC50) of 10.16 ± 1.69 µg/100 µL against the HepG2 cell line, which was comparable to 5-fluorouracil (standard, CC50 = 8.59 ± 1.33 µg/100 µL). In silico molecular docking suggested δ-curcumene, Ar-curcumene, Ar-turmerol, and Ar-turmerone among the promising compounds based on their high binding energy scores with NOX2, NF-κB, and mdm2 proteins. In conclusion, the oils from the turmeric-black cumin combined possess a considerable inhibition ability against free radicals, protein denaturation, and cancer proliferation. This study\'s findings further underscore the effectiveness of turmeric-black cumin as a polyherbal medicinal ingredient.
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  • 文章类型: Journal Article
    使用草药和膳食补充剂(HDS)占药物肝毒性病例的比例越来越高。姜黄或姜黄素,绿茶提取物,藤黄果,黑升麻,红曲米,和ashwagandha是最常见的肝毒性植物药,但它们在普通人群中的患病率和使用原因尚不清楚。
    评估6种潜在肝毒性植物药的成年消费者的患病率和临床特征。
    这项调查研究分析了国家健康与营养调查(NHANES)的全国代表性数据,全国代表,美国总人口的横断面调查。分析了过去30天的处方药和HDS暴露数据,2020年美国人口普查数据用于人口估计。数据进行了2023年7月1日至2024年2月1日的分析。
    成人NHANES参与者在2017年1月至2020年3月之间注册。
    将HDS使用者和6种潜在肝毒性植物产品使用者的基线加权特征与非HDS使用者进行了比较。进行多变量分析以确定与使用HDS或有风险的植物使用相关的因素。
    在这个NHANES队列中注册的9685名成年人中,平均年龄(SE)为47.5(0.5)岁,51.8%(95%CI,50.2%-53.4%)为女性。HDS产品使用的总体患病率为57.6%(95%CI,55.9%-59.4%),而使用6种感兴趣的植物药的患病率为4.7%(95%CI,3.9%-5.7%).最常用的是含姜黄的植物药(n=236),其次是含有绿茶的产品(n=92),ashwagandha(n=28),藤黄(n=20),红曲米(n=20),和黑升麻(n=19)。这6种植物药的消费者年龄明显较大(调整后的优势比[AOR],2.36[95%CI,1.06-5.25];40-59岁和AOR的P=.04,3.96[95%CI,1.93-8.11];≥60岁时P=.001),具有较高的教育水平(AOR,4.78[95%CI,2.62-8.75];P<.001),并且更有可能患有关节炎(AOR,2.27[95%CI,1.62-3.29];P<.001)与非HDS用户相比。估计有15584599(95%CI,13047571-18648801)美国成年人在过去30天内至少使用了6种植物产品中的1种,这与处方潜在肝毒性药物的患者数量相似,包括辛伐他汀(14036024[95%CI,11202460-17594452])和非甾体抗炎药(14793837[95%CI,13014623-16671897])。食用姜黄和绿茶的最常见原因是改善或保持健康。
    在这项调查研究中,估计有1560万美国成年人在过去30天内食用了至少一种具有肝脏功能的植物产品,与服用非甾体类抗炎药和常用降血脂药的人数相当。鉴于对植物产品的生产和测试缺乏监管,临床医生应该意识到这些基本不受管制的产品的消费可能导致的不良事件.
    UNASSIGNED: Use of herbal and dietary supplements (HDSs) accounts for an increasing proportion of drug hepatotoxicity cases. Turmeric or curcumin, green tea extract, Garcinia cambogia, black cohosh, red yeast rice, and ashwagandha are the most frequently reported hepatoxic botanicals, but their prevalence and reasons for use in the general population are unknown.
    UNASSIGNED: To assess the prevalence and clinical characteristics of adult consumers of 6 potentially hepatoxic botanicals.
    UNASSIGNED: This survey study analyzed nationally representative data from the National Health and Nutrition Examination Survey (NHANES), a nationally representative, cross-sectional survey of the general US population. Prescription drug and HDS exposure data in the past 30 days were analyzed, and 2020 US Census data were used for population estimates. Data were analyzed July 1, 2023, to February 1, 2024.
    UNASSIGNED: Adult NHANES participants enrolled between January 2017 and March 2020.
    UNASSIGNED: Baseline weighted characteristics of HDS users and users of 6 potentially hepatotoxic botanical products were compared with non-HDS users. Multivariable analysis was undertaken to identify factors associated with HDS use or at-risk botanical use.
    UNASSIGNED: Among 9685 adults enrolled in this NHANES cohort, the mean (SE) age was 47.5 (0.5) years, and 51.8% (95% CI, 50.2%-53.4%) were female. The overall prevalence of HDS product use was 57.6% (95% CI, 55.9%-59.4%), while the prevalence of using the 6 botanicals of interest was 4.7% (95% CI, 3.9%-5.7%). Turmeric-containing botanicals were most commonly used (n = 236), followed by products containing green tea (n = 92), ashwagandha (n = 28), Garcinia cambogia (n = 20), red yeast rice (n = 20), and black cohosh (n = 19). Consumers of these 6 botanicals were significantly older (adjusted odds ratio [AOR], 2.36 [95% CI, 1.06-5.25]; P = .04 for 40-59 years of age and AOR, 3.96 [95% CI, 1.93-8.11]; P = .001 for ≥60 years of age), had a higher educational level (AOR, 4.78 [95% CI, 2.62-8.75]; P < .001), and were more likely to have arthritis (AOR, 2.27 [95% CI, 1.62-3.29]; P < .001) compared with non-HDS users. An estimated 15 584 599 (95% CI, 13 047 571-18 648 801) US adults used at least 1 of the 6 botanical products within the past 30 days, which was similar to the estimated number of patients prescribed potentially hepatotoxic drugs, including simvastatin (14 036 024 [95% CI, 11 202 460-17 594 452]) and nonsteroidal anti-inflammatory drugs (14 793 837 [95% CI, 13 014 623-16 671 897]). The most common reason for consuming turmeric and green tea was to improve or maintain health.
    UNASSIGNED: In this survey study, an estimated 15.6 million US adults consumed at least 1 botanical product with liver liability within the past 30 days, comparable with the number of people who consumed nonsteroidal anti-inflammatory drugs and a commonly prescribed hypolipidemic drug. Given a lack of regulatory oversight on the manufacturing and testing of botanical products, clinicians should be aware of possible adverse events from consumption of these largely unregulated products.
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  • 文章类型: Journal Article
    放射性皮炎(RD)是放射治疗(RT)的常见不良事件。目前,对于RD的治疗没有共识和批准的方案。姜黄素(CUR)是从姜黄中获得的一种天然多酚,对人体具有较低的内在毒性。本系统综述旨在探讨CUR预防和治疗RD的疗效。
    在以下在线数据库中进行了系统的文献综述:Cochrane库,PubMed,Scopus,WebofScience,MEDLINE,和EMBASE。在选定的5条记录中,3个具有随机临床试验(RCT)设计,另一个具有先导和对照研究设计。纳入的研究涉及乳腺癌(N=3),头颈癌(N=1)和不同类型的癌症(N=1)。
    四项研究报告说,姜黄素在接受放疗的癌症患者中的应用与放射性皮炎的强度降低有关。然而,一项研究未报告CUR对放射性皮炎有显著影响.这篇综述提供了大量证据,证实了CUR在癌症支持治疗中的临床价值。
    为了确定接受放疗的患者的RD预防和治疗的“CUR的补充形式和剂量”,有必要进行更大规模的前瞻性临床试验。
    UNASSIGNED: Radiodermatitis (RD) is a frequent adverse event of radiotherapy (RT). Currently, there is no consensus and approved protocol for the treatment of RD. Curcumin (CUR) is a natural polyphenol obtained from turmeric and it has low intrinsic toxicity in humans. The aim of this systematic review was to explore the efficacy of CUR for prevention and treatment of RD.
    UNASSIGNED: A systematic literature review was performed in the following online databases: Cochrane library, PubMed, Scopus, Web of Science, MEDLINE, and EMBASE. Among the 5 selected records, 3 had a randomized clinical trial (RCT)-design and the other had a pilot and controlled study designed. The included studies were performed on breast cancer (N=3), head and neck cancers (N=1) and different types of cancer (N=1).
    UNASSIGNED: Four of the studies reported that the application of curcumin in cancer patients undergoing radiotherapy is associated with decreased intensity of radiodermatitis. However, one study did not report any significant effect of CUR on radiodermatitis. This review provides substantial evidence which confirm the clinical value of CUR in cancer supportive care.
    UNASSIGNED: Further prospective clinical trials in larger scales are warranted in order to determine the \" supplemental form and dose of CUR\" for RD prevention and treatment in patients receiving radiotherapy.
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  • 文章类型: Journal Article
    在所有类型的癌症中,乳腺癌是最具侵略性的,因为它是大多数癌症相关女性死亡的原因。虽然有几种医学疗法,治愈这种疾病的方案是不利的。因此,迫切需要找到解决方法。种族药学的知识可能会提供一些更好的解决方案来减轻这种致命的疾病。这里,我们用的是姜黄根茎.(黑姜黄),以及与之合成的金纳米颗粒(GNP),以检查其对乳腺癌细胞系的特异性细胞毒性潜力。在我们的研究中,乙醇提取物用于评估根茎的细胞毒性作用。使用相同的提取物合成GNP,并通过UV-Vis光谱(UV-Vis)进行表征,透射电子显微镜(TEM),X射线衍射(XRD)傅里叶变换红外光谱(FTIR),和热重分析(TGA)。TEM,XRD,FTIR和TGA结果揭示了GNP的成功合成和封端。UV-Vis光谱在550nm处显示出尖锐且窄的吸收峰,并且HRTEM证实了纳米颗粒的稳定性和成功合成。粗提取物的MTT测定显示出对乳腺癌细胞系的强烈细胞毒性。MCF-7(ER+)和MDAMB-231(三阴性乳腺癌,TNBC)的IC50值分别为15.70±0.029和21.57±0.031μg/mL。对于提取物介导的GNP,在两种乳腺癌细胞系中,IC50值分别为6.44±0.045和5.87±0.031μg/mL。由于GNP的IC50值被发现远低于粗提物,这表明GNP的效率更高。然而,根茎提取物及其介导的GNP对MDAMB-231(TNBC)细胞系均显示出更大的毒性。还观察到,与根茎提取物相比,GNP对TNBC细胞系显示出更大的毒性。在其他细胞系如L929和HeLa的情况下,对于粗提物以及GNP均未发现毒性。这些观察结果表明,粗根茎提取物及其衍生的GNP对乳腺癌细胞系具有选择性的细胞毒性潜力,这可能被用于靶向特异性治疗。此外,随着对GNP治疗效率背后机制的理解,它可以作为一种个性化疗法来治疗这种类型的癌症。
    Among all types of cancer, breast cancer is the most aggressive, as it is responsible for most of the cancer related death of women. Though several medical therapies are available, the scenario of curing such disease is not favorable. Therefore, there is an urgent need to find alternatives to deal with it. The knowledge of ethnopharmacy might give some better solution to mitigate such deadly diseases. Here, we are using the rhizome of Curcuma caesia Roxb. (Black turmeric), as well as gold nanoparticles (GNPs) synthesized with it to check their specific cytotoxic potentiality against breast cancer cell lines. In our study, ethanolic extract was used to evaluate the cytotoxic effect of the rhizome. GNPs were synthesized by using the same extract and characterized by UV-Vis spectroscopy (UV-Vis), Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and Thermo gravimetric analysis (TGA). The TEM, XRD, FTIR and TGA results revealed the successful synthesis and capping of GNPs. The UV-Vis Spectrum showed a sharp and narrow absorption peak at 550 nm and HRTEM confirmed both the stability and successful synthesis of the nanoparticles. The MTT assay of the crude extract revealed strong cytotoxicity against breast cancer cell lines viz. MCF-7 (ER+) and MDA MB-231 (Triple Negative Breast Cancer, TNBC) by showing IC50 values as 15.70 ± 0.029 and 21.57 ± 0.031 μg/mL respectively. For extract mediated GNPs, the IC50 values were found to be 6.44 ± 0.045 and 5.87 ± 0.031μg/mL respectively in both breast cancer cell lines. As the IC50 value for GNPs was found to be much lower than that of crude extract, it indicates a higher efficiency of the GNP. However, both the rhizome extract and its mediated GNPs showed more toxicity towards MDA MB-231 (TNBC) cell lines. It was also observed that the GNPs showed more toxicity towards TNBC cell lines compared to the rhizome extract. No toxicity was found in case of other cell lines such as L 929 and HeLa for both crude extract as well as for GNPs. These observations suggests that both the crude rhizome extract and its derived GNPs exhibit selective cytotoxic potential against breast cancer cell lines, which might be exploited for target specific treatment. Moreover, with an understanding of the mechanism behind the GNPs therapeutic efficiency, it can be developed as a personalized therapy to treat such type of cancers.
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  • 文章类型: Journal Article
    从自然感染的绵羊收集毛虫卵。需要天然的抗蠕虫药,如草药作为替代品,如来自特有植物的天然化合物。
    本研究旨在评估姜黄(EECL)和骆驼(EECS)的乙醇提取物作为生物驱虫药对毛虫卵的杀卵活性和细胞毒性作用。
    从自然感染的绵羊收集毛虫卵。1%的CMC-Na溶液用作对照。治疗为0.12%EECL;0.24%EECL;0.15%EECS;0.30%EECS;0.12%EECL和0.30%EECS的组合;0.24%EECL和0.15%EECS的组合。通过使用不同浓度的EECL提取物处理的卵的显微镜检查,EECS,以及它们的组合。将它们暴露不同时间(7、14、21和28天)并在室温下孵育。
    该研究表明,龙骨C.longa提取物和茶提取物的组合对Trichurissp。在羊使用3-(4,5-二甲基噻唑-2-基)2,5-二苯基四唑溴化物(MTT)测试进行细胞毒性检查。基于使用回归分析处理的MTT数据,从EECL管理获得的LC50,EECS,以及以1:1、2:2、1:2和2:1的比例组合。最高浓度的EECL提取物和EECS的组合产生28.46%的细胞活力,17.25%,56.01%,和46.47%,分别。
    可以得出结论,在EECL和EECS(2:2)的组合中发现的细胞毒性最强的成分为17.25%,最安全的是比例(1:2)为56.01%。
    UNASSIGNED: The Trichuris eggs are collected from naturally infected sheep. Natural antihelmintics such as herbal medicines are needed as an alternative, such as natural compounds from endemic plants.
    UNASSIGNED: This present study aims to evaluate the ovicidal activity and cytotoxicity effects of ethanolic extract of Curcuma longa (EECL) and Camelia sinensis (EECS) as a biological anthelmintic against the egg of Trichuris sp.
    UNASSIGNED: The Trichuris eggs are collected from naturally infected sheep. CMC-Na solution 1% was used as a control. The treatments were 0.12% EECL; 0.24% EECL; 0.15% EECS; 0.30% EECS; a combination of 0.12% EECL and 0.30% EECS; a combination of 0.24% EECL; and 0.15% EECS. Ovicidal activity testing by microscopic examination of eggs treated using different concentrations of EECL extract, EECS, and a combination of them. They were exposed for various times (7, 14, 21, and 28 days) and incubated at room temperature.
    UNASSIGNED: The study shows that a combination of C. longa extract and tea extract exhibits good ovicidal anthelmintic activity against Trichuris sp. in sheep. Cytotoxicity examination using the 3-(4,5-dimethylthiazol-2-yl) 2,5-diphenyl tetrazolium bromide (MTT) test. Based on MTT data processed using regression analysis, the obtained LC50 from the administration of EECL, EECS, and a combination of both in a ratio of 1:1, 2:2, 1:2, and 2:1. The combination of EECL extract and EECS with the highest concentration produced cell viability of 28.46%, 17.25%, 56.01%, and 46.47%, respectively.
    UNASSIGNED: It can be concluded that the most cytotoxic ingredient is found in the combination of EECL and EECS (2:2) at 17.25% and the safest is in the ratio (1:2) at 56.01%.
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  • 文章类型: Journal Article
    有机和无机元素在生长中的作用,发展,植物的次生代谢产物合成至关重要,尤其是它们的药用价值。然而,针对这两个方面的全面研究很少。因此,本手稿旨在研究傅里叶变换红外光谱(FT-IR)和激光诱导击穿光谱(LIBS)技术的潜在用途,以获得来自两个不同地理区域的姜科重要药用植物的官能团以及有机和无机元素谱。甲醇提取物的FT-IR分析显示存在脂族和芳族醇,酯类,醚,羧基化合物,以及它们的衍生物。在LIBS分析中,观察到样品中存在的原子和分子种类的光谱特征,包括有机和无机元素。在样品的LIBS光谱中也观察到重金属和微量元素的存在。此外,偏最小二乘判别分析(PLS-DA)已用于基于光谱指纹获得样本的分类模式。这项研究不仅有助于反映微量营养素在辅助次生代谢中的重要性,从而增强植物的药用特性,而且还可以识别植物中的微量元素。这有助于确定特定植物成分的合适用法和剂量,有助于建立药理学和营养学意义的研究目标。这项研究势在必行,因为它填补了研究的关键空白,尽管在这个方向上进一步的工作是必要的。
    The role of organic and inorganic elemental profiles in the growth, development, and secondary metabolite synthesis of plants is crucial, particularly concerning their medicinal value. However, comprehensive studies addressing both aspects are scarce. Hence, the present manuscript aims to investigate the potential use of Fourier transform infrared spectroscopy (FT-IR) and laser-induced breakdown spectroscopy (LIBS) techniques to obtain the functional groups and organic and inorganic elemental profiles of significant medicinal plants belonging to the Zingiberaceae family collected from two different geographic regions in India. The FT-IR analysis of the methanolic extracts shows the presence of aliphatic and aromatic alcohols, esters, ethers, carboxyl compounds, and their derivatives. In LIBS analysis, the spectral characteristics of atomic and molecular species present in the samples were observed, encompassing both organic and inorganic elements. The presence of heavy metals and trace elements have also been observed in the LIBS spectra of the samples. Furthermore, partial least squares discriminant analysis (PLS-DA) has been used to obtain classification pattern of the samples based on their spectral fingerprints. This study not only helps in reflecting the significance of micronutrients in aiding secondary metabolism thus enhancing the medicinal properties of plants, but also enables the identification of trace elements within plants. This facilitates the determination of the suitable usage and dosage of particular plant components, contributing to the research goal of establishing pharmacological and nutraceutical significance. This study is imperative as it fills a critical gap in research, although further work in this direction is warranted.
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  • 文章类型: Journal Article
    背景:嗜水气单胞菌是一种致病细菌,可在人和动物中引起各种感染。细菌外蛋白酶被认为是嗜水曲霉致病性的重要决定因素。丝氨酸蛋白酶和金属蛋白酶,受细菌群体感应(QS)系统调节的是嗜水菌致病性的重要毒力因子。姜黄素的抗QS潜力已有报道,以前。在这项工作中,我们研究了姜黄素对嗜水气单胞菌金属蛋白酶和丝氨酸蛋白酶基因表达的影响。
    方法:通过琼脂宏观稀释法测量姜黄素的最小抑制浓度(MIC),并在随后的实验中使用亚抑制浓度(1/2MIC)。使用定量PCR(qPCR)测定评估处理的细菌和对照细菌中金属蛋白酶和丝氨酸蛋白酶基因的表达水平。还通过脱脂乳琼脂平板测定法测量细菌蛋白水解活性。
    结果:姜黄素对细菌菌株的MIC为1024μg/ml姜黄素,在512µg/mL(1/2MIC)时,它显着降低了金属蛋白酶和丝氨酸蛋白酶基因的表达,达到66%和77%,分别。此外,姜黄素大大降低了嗜水气单胞菌的蛋白水解活性。
    结论:由于对细菌蛋白水解具有良好的抑制作用,姜黄素可以被认为是针对嗜水气单胞菌的抗毒剂。
    BACKGROUND: Aeromonas hydrophila is a pathogenic bacterium responsible for various infections in humans and animals. Bacterial exoproteases are considered an important determinant in the pathogenicity of A. hydrophila. Serine protease and metalloprotease, that are regulated by the bacterial Quorum sensing (QS) system are important virulent factors in the pathogenicity of A. hydrophila. Anti-QS potential of curcumin has been reported, previously. In this work, we characterized the effect of curcumin on the expression of the metalloprotease and serine protease genes in A. hydrophila.
    METHODS: The minimum inhibitory concentration (MIC) of curcumin was measured by the agar macro-dilution method and a sub-inhibitory concentration (1/2 MIC) was used in subsequent experiments. The expression level of the metalloprotease and serine protease genes among the treated and control bacteria was evaluated using quantitative PCR (qPCR) assay. Bacterial proteolytic activity was also measured by skim milk agar plate assay.
    RESULTS: MIC of curcumin for bacterial strain was 1024 μg/ml curcumin, and at 512 µg/mL (1/2 MIC) it remarkably attenuated the expression of the metalloprotease and serine protease genes up to 66 and 77%, respectively. Also, the proteolytic activity of A. hydrophila was considerably reduced by curcumin.
    CONCLUSIONS: Due to the promising inhibitory effect on bacterial proteolysis, curcumin could be considered an anti-virulence agent against A. hydrophila.
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  • 文章类型: Journal Article
    姜黄,来源于姜黄,和副干酪乳杆菌,乳酸菌,已经对其潜在的抗肥胖作用进行了研究。迄今为止,用副干酪乳杆菌发酵的姜黄的抗肥胖作用尚未得到充分研究。这项研究是通过使用高脂饮食(HFD)诱导的肥胖C57BL/6J小鼠,在饮食中口服5%的副干酪发酵乳杆菌(FT)和未发酵的姜黄(UT)进行的。结果表明,姜黄的姜黄素含量随发酵而降低。此外,FT显着抑制了UT和FT实验组的体重增加以及肝脏和内脏脂肪组织重量,并降低了血浆代谢参数。FT的作用比未发酵形式的作用更明显。此外,FT下调脂肪生成的表达,脂肪生成,和炎症相关蛋白,但上调肝脏β氧化蛋白SIRT1,PPARα,和周围脂肪组织中的PGC-1α。此外,FT通过激活内脏脂肪组织中胰岛素受体途径蛋白的表达改善胰岛素抵抗。FT还调节了肠道微生物群组成,特别是在两种有益细菌中,粘虫和DesulfovibrioAkkermansia,以及两种产生短链脂肪酸的细菌:肠壁杆菌和Deltaproteobacteria。我们的发现表明,FT的调节作用可能是其抗肥胖机制的重要途径。
    Turmeric, derived from Curcuma longa, and Lactobacillus paracasei, a lactic acid bacteria, have been studied for their potential antiobesity effects. To date, the antiobesity effects of turmeric fermented with L. paracasei have not been sufficiently investigated. This study was conducted via oral administration of 5% L. paracasei-fermented (FT) and unfermented turmeric (UT) in diet over 16 weeks using high-fat diet (HFD)-induced obese C57BL/6J mice. Results showed that the curcuminoid content of turmeric decreased following fermentation. Furthermore, FT significantly suppressed weight gain and liver and visceral adipose tissue weight and reduced plasma metabolic parameters in both the UT and FT experimental groups. The effects of FT were more noticeable than those of the unfermented form. Moreover, FT downregulated the expression of adipogenesis, lipogenesis, and inflammatory-related protein, but upregulated liver β-oxidation protein SIRT 1, PPARα, and PGC-1α in perigonadal adipose tissue. Additionally, FT ameliorated insulin resistance by activating insulin receptor pathway protein expressions in visceral adipose tissues. FT also modulated gut microbiota composition, particularly in two beneficial bacteria, Akkermansia muciniphila and Desulfovibrio, as well as two short-chain fatty acid-producing bacteria: Muribaculum intestinale and Deltaproteobacteria. Our findings indicate that the modulation effect of FT may be an important pathway for its antiobesity mechanisms.
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  • 文章类型: Journal Article
    姜黄(姜黄)含有姜黄素,去甲氧基姜黄素(DMC),和双去甲氧基姜黄素(BDMC)。然而,姜黄素是研究最多的活性成分,具有多种药理作用。我们调查了在Ryudai黄金中发现的这些姜黄素的影响,一种已批准的姜黄品种,伤口愈合,炎症,和糖尿病。种植者下注射角叉菜胶诱导大鼠急性爪炎。通过用活检打孔器在小鼠的剃毛背部上制作6mm圆形伤口来检查1%姜黄素的伤口愈合能力。使用单次腹膜内注射链脲佐菌素(50mg/kg)在小鼠中诱导糖尿病。以100mg/kg体重的剂量率使用类姜黄素与饲料一起使用,并作为胃管饲以治疗实验动物的糖尿病和炎症。在角叉菜胶注射后1、3和6小时测量爪厚度。三个小时后,注射角叉菜胶的小鼠平均爪体积为58%,是35%,37%,还有31%的姜黄素,DMC,和BDMC组,分别。爪组织的组织病理学显示严重的炎症细胞浸润和真皮增厚,姜黄素得到了显着改善。姜黄素的伤口愈合能力明显更高(95.0%),DMC-(93.17%),和BDMC治疗组(89.0%),与第9天的对照组(65.09%)相比。在整个研究中,用1%类姜黄素处理的组之间的伤口愈合活性没有显著差异。链脲佐菌素诱导的糖尿病的特征是血糖升高(552.2mg/dL)和体重下降(31.2g)。与对照组大鼠相比(145.6mg/dL和46.8g血糖和体重,分别)。与对照组相比,它还导致血清丙氨酸氨基转移酶(ALT;44.2U/L)和天冬氨酸氨基转移酶(AST;55.8U/L)升高(18.6U/L和20.1U/L,分别)。肝脏组织病理学检查显示,糖尿病引起肝细胞坏死,中央静脉充血,和薄壁组织变性。然而,所有三种姜黄素均显着降低血糖水平,ALT,和AST,并改善肝脏的组织病理学评分。这些结果证明,不仅姜黄素而且DMC和BDMC具有有效的抗炎作用,伤口愈合,和抗糖尿病功效,姜黄的Ryudai黄金品种可以用作功能性食品补充剂。
    Turmeric (Curcuma longa) contains curcumin, demethoxycurcumin (DMC), and bisdemethoxycurcumin (BDMC). Nevertheless, curcumin is the most researched active ingredient for its numerous pharmacological effects. We investigated the impact of these curcuminoids found in Ryudai gold, an approved cultivar of Curcuma longa, on wound healing, inflammation, and diabetes. Sub-planter injections of carrageenan induced acute paw inflammation in rats. The wound-healing ability of 1% curcuminoids was examined by making a 6 mm round wound on the shaved dorsum of the mice with a biopsy punch. A single intraperitoneal injection of streptozotocin (50 mg/kg) was used to induce diabetes in mice. Curcuminoids at a dose rate of 100 mg/kg body weight were used with feed and as a gastric gavage to treat diabetes and inflammation in experimental animals. Paw thickness was measured at 1, 3, and 6 h following carrageenan injection. After three hours, mean paw volume was 58% in carrageenan-injected mice, which was 35%, 37%, and 31% in the curcumin, DMC, and BDMC groups, respectively. Histopathology of the paw tissue demonstrated severe infiltration of inflammatory cells and thickening of the dermis, which were remarkably improved by the curcuminoids. The wound-healing abilities were significantly higher in the curcumin- (95.0%), DMC- (93.17%), and BDMC-treated (89.0%) groups, in comparison to that of the control (65.09%) group at day nine. There were no significant differences in wound-healing activity among the groups treated with 1% curcuminoids throughout the study. Streptozotocin-induced diabetes was characterized by an increased blood glucose (552.2 mg/dL) and decreased body weight (31.2 g), compared to that of the control rats (145.6 mg/dL and 46.8 g blood glucose and body weight, respectively). It also caused an increase in serum alanine aminotransferase (ALT; 44.2 U/L) and aspartate aminotransferase (AST; 55.8 U/L) compared to that of the control group (18.6 U/L and 20.1 U/L, respectively). Histopathological examination of the liver showed that diabetes caused hepatic cellular necrosis, congestion of the central vein, and parenchymatous degeneration. However, all three curcuminoids significantly decreased blood glucose levels, ALT, and AST and improved the histopathological score of the liver. These results evidenced that not only curcumin but also DMC and BDMC have potent anti-inflammatory, wound healing, and anti-diabetic efficacy, and the Ryudai gold variety of turmeric could be used as a functional food supplement.
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