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Fermentation of Milk Using Folate-Producing Lactic Acid Bacteria to Increase Natural Folate Content: A Review 利用产叶酸乳酸菌发酵牛奶提高天然叶酸含量的研究进展
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-12-05 DOI: 10.29252/jabr.06.04.01
Fenny Amilia Mahara, L. Nuraida, H. Lioe
Folate, also known as vitamin B9, is essential in cell metabolism and very important especially for pregnant women and lactating mothers. Natural folate is available in food but it is very unstable. Synthetic folate is generally used as an alternative to meet daily needs due to its stability, even though it has a negative effect causing a variety of metabolic disorders. Some lactic acid bacteria have been reported as being able to synthesize natural folate during the fermentation process. Lactic acid bacteria are the main microorganisms for lactic fermentation such as fermented milk, fruits, and vegetables. Milk is the most nutritious food and contains folate-binding protein, hence it is considered the ideal fermentation medium to increase folate stability during storage. Fermentation of milk with folate-producing lactic acid bacteria can be used as a technique to produce natural folate-rich fermented foods as an attempt to prevent folate deficiency without side effects to the consumers.
叶酸,也被称为维生素B9,对细胞代谢至关重要,对孕妇和哺乳期母亲尤其重要。食物中有天然叶酸,但它很不稳定。由于其稳定性,合成叶酸通常被用作满足日常需求的替代品,尽管它有引起各种代谢紊乱的负面影响。据报道,一些乳酸菌能够在发酵过程中合成天然叶酸。乳酸菌是发酵乳、水果、蔬菜等乳酸发酵的主要微生物。牛奶是最有营养的食物,含有叶酸结合蛋白,因此它被认为是理想的发酵培养基,可以在储存期间增加叶酸的稳定性。用产叶酸的乳酸菌发酵牛奶可以作为一种生产富含叶酸的天然发酵食品的技术,以防止叶酸缺乏而不会对消费者产生副作用。
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引用次数: 6
Effects of Avocado/Soybean on the Chondrogenesis of Human Adipose-Derived Stem Cells Cultured on Polylactic-Co-Glycolic Acid/Fibrin Hybrid Scaffold 牛油果/大豆对聚乳酸-羟基乙酸/纤维蛋白复合支架培养的人脂肪干细胞成软骨的影响
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-12-05 DOI: 10.29252/jabr.06.04.03
B. Hashemibeni, Mohammad Mardani, A. Valiani, M. Pourentezari, M. Anvari, M. Yadegari, E. Mangoli
Introduction: Avocado and soya unsaponifiables (ASU) have been reported to be useful for the treatment of cartilage diseases. The aim of this study was to detect whether avocado/soybean can have any effect on the chondrogenesis of human adipose-derived stem cells on polylactic-co-glycolic acid/fibrin hybrid scaffold or not. Materials and Methods: The poly-lactic-co-glycolic acid (PLGA)/fibrin scaffolds were seeded with cultured human adipose tissue-derived stem cells (hADSCs), which were then divided into three groups: control, TGF-β3, and ASU and the results were analyzed 14 days later. The viability of the cells in different groups were assessed by MTT. The expression of chondrogenic-related genes Sox9, type II collagen, Aggrecan, type X collagen, and type I collagen were quantified by real time polymerase chain reaction (PCR). Protein expression levels of collagen type II and X were evaluated by Western blotting. Results: Enhanced cellular viability was observed in the ASU group compared to the transforming growth factor beta-3 (TGF-β3) group. Analysis of aggrecan (Agg), type II collagen (Coll2) and SOX9 revealed that ASU and TGF-β3 induce hADSCs on PLGA/fibrin scaffold to differentiate into chondrocytes in-vitro. Moreover, a significant decrease was observed in the expression of type X (Coll10) and I collagen (Coll1) genes in the ASU group compared to the TGF-β3 group. Protein levels of type II collagen (Coll2) significantly increased in TGF-β3 and ASU groups in comparison with those of the control group. However, protein levels of Type X collagen (Coll10) significantly declined in the ASU group when compared with the TGF-β3 group. Conclusions: The results of the present study indicated that hADSCs containing the ASU in PLGA/fibrin hybrid scaffold are an effective way to potentially enhance Cartilage-specific genes with less hypertrophy and Fibrosis in-vitro.
引言:鳄梨和大豆不皂化物(ASU)已被报道可用于治疗软骨疾病。本研究的目的是检测鳄梨/大豆是否对聚乳酸-乙醇酸/纤维蛋白混合支架上的人类脂肪干细胞的软骨形成有任何影响。材料和方法:用培养的人脂肪组织来源干细胞(hADSCs)接种聚乳酸-乙醇酸(PLGA)/纤维蛋白支架,将其分为对照组、TGF-β3组和ASU组,14天后对结果进行分析。MTT法检测各组细胞的活力。软骨形成相关基因Sox9、II型胶原、Aggrecan、X型胶原和I型胶原的表达通过实时聚合酶链式反应(PCR)进行定量。通过蛋白质印迹评估II型胶原和X型胶原的蛋白质表达水平。结果:与转化生长因子β-3(TGF-β3)组相比,ASU组的细胞活力增强。聚集蛋白聚糖(Agg)、II型胶原(Coll2)和SOX9的分析表明,ASU和TGF-β3在体外诱导PLGA/纤维蛋白支架上的hADSCs分化为软骨细胞。此外,与TGF-β3组相比,ASU组中X型(Coll10)和I型胶原(Coll1)基因的表达显著降低。与对照组相比,TGF-β3和ASU组的II型胶原(Coll2)蛋白水平显著升高。然而,与TGF-β3组相比,ASU组的X型胶原(Coll10)蛋白水平显著下降。结论:本研究结果表明,在PLGA/纤维蛋白混合支架中含有ASU的hADSCs是一种在体外增强软骨特异性基因的有效方法,可减少肥大和纤维化。
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引用次数: 5
Exploring the Potential and Limitations of PCR-RFLP and PCR-SSCP for SNP Detection: A Review 探讨PCR-RFLP和PCR-SSCP在SNP检测中的潜力和局限性:综述
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-12-05 DOI: 10.29252/jabr.06.04.02
H. Hashim, M. Al-Shuhaib
Polymerase chain reaction–single-strand conformation polymorphism (PCR-SSCP) and PCR–restriction fragment length polymorphism (PCR-RFLP) are two independent methods used in the post-amplification genotyping of DNA variations. Both techniques are used in a wide range of screening applications to characterize single nucleotide polymorphisms (SNPs). The PCR-SSCP enables the identification of a potentially causative unknown SNP that could not be identified by PCR-RFLP. However, because complicated steps are not required to perform PCR-RFLP, it is used in many applications. On the other hand, PCR-RFLP is easier to process in terms of time and handover experience, the detection of a particular unknown SNP by PCR-SSCP has further chances. The simplicity of PCR-RFLP does not mean that it is better than PCR-SSCP. The reason is the limited ability of PCR-RFLP to detect nucleotide variations, which often go undetected because each restriction enzyme (RE) scans only a few recognition sequences, and other sequences are ignored. Furthermore, the efficacy of PCR-SSCP is sometimes hindered by many optimizations and also lack of experience. As PCR-SSCP allows other sequences within an amplicon to be separated and characterized, the choice between PCR-RFLP and PCR-SSCP is largely dependent on the reason for each genotyping experiment. This review provides a useful guide for comparing PCR-RFLP and PCR-SSCP in terms of their concepts, efficiency, ease of use, interpretation, and sensitivity as well as several other parameters. The comparison is extended to the practical applications of both techniques in terms of their utilization in molecular diagnostics and related applications.
聚合酶链反应-单链构象多态性(PCR-SSCP)和pcr -限制性片段长度多态性(PCR-RFLP)是DNA扩增后基因分型的两种独立方法。这两种技术都用于广泛的筛选应用,以表征单核苷酸多态性(snp)。PCR-SSCP能够鉴定出PCR-RFLP无法鉴定的潜在致病未知SNP。然而,由于执行PCR-RFLP不需要复杂的步骤,因此在许多应用中使用。另一方面,PCR-RFLP在时间和切换经验方面更容易处理,通过PCR-SSCP检测到特定的未知SNP有进一步的机会。PCR-RFLP的简单性并不意味着它比PCR-SSCP更好。原因是PCR-RFLP检测核苷酸变异的能力有限,由于每个限制性内切酶(RE)只扫描少数识别序列,而忽略了其他序列,因此通常无法检测到核苷酸变异。此外,PCR-SSCP的效果有时会受到许多优化和缺乏经验的阻碍。由于PCR-SSCP允许扩增子内的其他序列被分离和表征,因此在PCR-RFLP和PCR-SSCP之间的选择在很大程度上取决于每个基因分型实验的原因。这篇综述为比较PCR-RFLP和PCR-SSCP在概念、效率、易用性、解释、灵敏度以及其他一些参数方面提供了有用的指南。比较扩展到两种技术在分子诊断和相关应用方面的实际应用。
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引用次数: 51
Streptomyces tsukubaensis Fermentation Using Brazil Nut Oil to Enhance Tacrolimus Production 利用巴西坚果油发酵tsukubaensis链霉菌提高他克莫司产量
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-09-12 DOI: 10.29252/JABR.06.03.05
S. Silva, Wilson Murilo Correa da Silva Ferrari, Jean Vinícius Moreira, T. Franco, M. Cremasco
Introduction: Tacrolimus is a medication mainly used as immunosuppressant, but also plays as an important role in the treatment of dermathoses and eye diseases. It is a secondary metabolite produced during fermentation from Streptomyces tsukubaensis. Investigations have been conducted in order to enhance the tacrolimus production, since it is the greatest industrial bottleneck related to this process. Some strategies have been adopted in order to solve this problem, such as the usage of a genetically modified bacteria and changes in the exogeneous feeding, and providing vegetable oils as nutrient sources. The present study has investigated the influence of the Brazil nut (Bertholletia excelsa) oil as a carbon source in the fermentation. Materials and Methods: The fermentative process was conducted in an orbital shaker at 28oC and 130 rpm during 168 hours. The amount of produced tacrolimus was quantified using HPLC. The sugars and proteins in the medium were measured using the Somogyi-Nelson and Bradford methods, respectively. Results: According to the results of the present study, a linearity was observed between the amount of consumed sugars and the produced proteins. The highest tacrolimus production was achieved at 96 hours (41.67 mg.L-1), and the biomass production along the fermentation was low. Conclusions: The use of Brazil nut oil as a carbon source in the fermentation using Streptomyces tsukubaensis was successful, since it increased the tacrolimus production. This point is an advantage of using this vegetable oil compared to traditional sugars.
引言:他克莫司是一种主要用作免疫抑制剂的药物,但在皮肤病和眼病的治疗中也发挥着重要作用。它是由海啸链霉菌在发酵过程中产生的次级代谢产物。为了提高他克莫司的产量,已经进行了调查,因为它是与该工艺相关的最大工业瓶颈。为了解决这个问题,已经采取了一些策略,例如使用转基因细菌和改变外源性喂养,以及提供植物油作为营养来源。本研究考察了巴西坚果油作为碳源在发酵过程中的影响。材料和方法:发酵过程在28℃、130转/分的轨道振荡器中进行,持续168小时。使用HPLC对产生的他克莫司的量进行定量。分别使用Somogyi-Nelson和Bradford方法测量培养基中的糖和蛋白质。结果:根据本研究的结果,观察到糖的消耗量和产生的蛋白质之间存在线性关系。他克莫司的最高产量在96小时时达到(41.67mg.L-1),并且发酵过程中的生物量产量较低。结论:利用巴西坚果油作为碳源,利用tsukubaensis链霉菌进行发酵是成功的,因为它提高了他克莫司的产量。这一点是使用这种植物油与传统糖相比的优势。
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引用次数: 3
An Optimized Protocol for Agrobacterium rhizogenes-Mediated Genetic Transformation of Citrullus colocynthis 根际农杆菌介导的瓜泥遗传转化的优化方案
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-09-12 DOI: 10.29252/JABR.06.03.06
Mina Beigmohammadi, A. Sharafi, S. Jafari
Introduction: Citrullus colocynthis is considered as a precious herb due to its medicinal and nutritional values and also for its ability to produce valuable bioactive compounds such as cucurbitacin E and quercetin. The hairy root systems are valuable tools for scaling-up secondary metabolites and for introducing new beneficial traits into herbs. The present research has aimed to develop a protocol for hairy root culture of C. colocynthis using Agrobacterium rhizogenes. Materials and Methods: After the establishment of the hairy root system, factors such as explant type, bacterial strain, pre-culture period, co-cultivation period, and the use of acetosyringone that affect the efficient transformation of the herb were optimized. Four A. rhizogenes strains (MSU440, A4, A13 and ATCC 15834) and three types of explant (leaf, excised shoot and hypocotyl) were tested. Furthermore, the insertion of transgene into the genome of C. colocynthis was confirmed by polymerase chain reaction analysis. Results: The highest transformation frequency was obtained after the infection of excised shoots by MSU440. Co-cultivation for 48 hours resulted in enhanced transformation frequency, while the results of this research showed that the protocol is better not to include the pre-culturing step. In addition, the presence of acetosyringone in bacterial culture and co-cultivation medium significantly increased the success of C. colocynthis transformation. Conclusions: This study describes an efficient protocol for hairy roots culture of C. colocynthis which can be used for scaling-up the plant active phytochemicals or for genetic manipulations of the plant.
引言:由于其药用价值和营养价值,以及其能够产生有价值的生物活性化合物,如葫芦素E和槲皮素,Citrullus colocynthis被认为是一种珍贵的草药。毛状根系是增加次生代谢产物和向草本植物中引入新的有益性状的重要工具。本研究旨在建立一种利用发根农杆菌培养巨藻毛状根的方法。材料与方法:在毛状根系建立后,对外植体类型、菌种、预培养期、共培养期、乙酰丁香酮的使用等影响毛状根系高效转化的因素进行优化。以4株根状芽孢杆菌(MSU440、A4、A13和ATCC 15834)和3种外植体(叶片、截梢和下胚轴)为试验材料。此外,通过聚合酶链反应分析,证实了转基因基因插入到colocynthis的基因组中。结果:MSU440侵染离体芽后转化频率最高。共培养48小时,转化频率提高,但本研究结果表明,该方案最好不包括预培养步骤。此外,细菌培养和共培养培养基中乙酰丁香酮的存在显著提高了C. colocynthis转化的成功率。结论:本研究描述了一种有效的植毛根培养方案,可用于扩大植物活性化学物质或对植物进行遗传操作。
{"title":"An Optimized Protocol for Agrobacterium rhizogenes-Mediated Genetic Transformation of Citrullus colocynthis","authors":"Mina Beigmohammadi, A. Sharafi, S. Jafari","doi":"10.29252/JABR.06.03.06","DOIUrl":"https://doi.org/10.29252/JABR.06.03.06","url":null,"abstract":"Introduction: Citrullus colocynthis is considered as a precious herb due to its medicinal and nutritional values and also for its ability to produce valuable bioactive compounds such as cucurbitacin E and quercetin. The hairy root systems are valuable tools for scaling-up secondary metabolites and for introducing new beneficial traits into herbs. The present research has aimed to develop a protocol for hairy root culture of C. colocynthis using Agrobacterium rhizogenes. Materials and Methods: After the establishment of the hairy root system, factors such as explant type, bacterial strain, pre-culture period, co-cultivation period, and the use of acetosyringone that affect the efficient transformation of the herb were optimized. Four A. rhizogenes strains (MSU440, A4, A13 and ATCC 15834) and three types of explant (leaf, excised shoot and hypocotyl) were tested. Furthermore, the insertion of transgene into the genome of C. colocynthis was confirmed by polymerase chain reaction analysis. Results: The highest transformation frequency was obtained after the infection of excised shoots by MSU440. Co-cultivation for 48 hours resulted in enhanced transformation frequency, while the results of this research showed that the protocol is better not to include the pre-culturing step. In addition, the presence of acetosyringone in bacterial culture and co-cultivation medium significantly increased the success of C. colocynthis transformation. Conclusions: This study describes an efficient protocol for hairy roots culture of C. colocynthis which can be used for scaling-up the plant active phytochemicals or for genetic manipulations of the plant.","PeriodicalId":14945,"journal":{"name":"Journal of Applied Biotechnology Reports","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44408625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Relationship Between Metabolic Syndrome and Serum Uric Acid in an Iranian Community Elderly Population: A Cohort Aging Study 伊朗社区老年人群代谢综合征与血清尿酸的关系:一项队列衰老研究
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-09-12 DOI: 10.29252/JABR.06.03.07
Mansour Babaei, A. Bakhtiari, Elham Divband, Ali Bijani, S. Hosseini
Introduction: Serum uric acid (UA) level is reported to be associated with a variety of cardiometabolic risk factors. Although various studies have reported elevated levels of UA in patients with metabolic syndrome (MetS), its clinical interpretation is still controversial and challenging. Thus, we examined the association between hyperuricemia (HUA) and UA levels with MetS, its components and number of components. Materials and Methods: This population-based cross-sectional study included 1561 older people who participated in Amirkola Health and Aging Project (AHAP) in North of Iran. MetS was defined based on the Iranian National Committee of Obesity criteria. Blood pressure, fasting blood glucose (FBG), lipid profiles, UA and anthropometric measures were determined. Results: The diagnosis of the MetS was not associated with UA levels and HUA. The results of this study showed that the only FBG is a component which increases the risk of HUA. Conclusions: Our findings from a community elderly population suggest that the UA levels and HUA were not associated with the diagnosis of the MetS by the stepwise logistic regression approach. However, in spite of various confounding factors, including metabolic and non-metabolic components in the association with MetS and UA, the whole relationship remains to be determined. A large prospective study is needed to reveal the clinical significance of UA in MetS.
血清尿酸(UA)水平被报道与多种心脏代谢危险因素相关。尽管各种研究报道了代谢综合征(MetS)患者UA水平升高,但其临床解释仍然存在争议和挑战。因此,我们研究了高尿酸血症(HUA)和UA水平与MetS、其成分和成分数量之间的关系。材料和方法:这项以人群为基础的横断面研究包括1561名参加伊朗北部Amirkola健康与老龄化项目(AHAP)的老年人。MetS是根据伊朗国家肥胖委员会的标准定义的。测定血压、空腹血糖(FBG)、血脂、UA和人体测量值。结果:met的诊断与UA水平和HUA无关。本研究结果表明,唯一的空腹血糖是增加HUA风险的成分。结论:我们的研究结果表明,通过逐步逻辑回归方法,UA水平和HUA与MetS的诊断无关。然而,尽管存在各种混杂因素,包括代谢和非代谢成分与MetS和UA相关,但整体关系仍有待确定。需要一项大型的前瞻性研究来揭示UA在MetS中的临床意义。
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引用次数: 0
Intravenous Administration of Granulocyte-Colony Stimulating Factor for Stem Cells Mobilization and Third Degree Burn Wound Healing in Rats 静脉注射粒细胞集落刺激因子对大鼠干细胞动员和三度烧伤创面愈合的影响
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-09-11 DOI: 10.29252/JABR.06.03.01
Ali Samadikuchaksaraei, N. Nasiri, M. J. Sharifi, N. Chauhan, B. Farhadihosseinabadi, Sina Fatemi Sovini, M. Gholipourmalekabadi
Introduction: Burns are one the most common skin damages which require medical intervention to be fully-recovered. In this light, tissue engineering field presents a vide verity of strategies including both scaffold-based and cell-based approaches to recover the damaged site. Materials and Methods: In this study, the effects of granulocyte-colony stimulating factor (G-CSF) administration on mobilization of the bone marrow mesenchymal stem cells (MSCs) into defect area and treatment of the skin burn wound was examined in vivo. The G-CSF was injected intravenously into rats subjected to third degree burn wound. At days 3, 5, 7, 15 and 30 post-injections, the defect site was removed and investigated by H&E and Malory’s trichrome staining. The number of MSCs in blood samples was also determined by flow cytometry assay. Results: According to the results, intravenously administration of G-CSF significantly increased collagenesis and number of fibroblast cells infiltrated into the burned site, while decreased the severity of acute inflammatory response and amount of inflammatory cells comparing to control. The number of MSCs in bloodstream, representing the rate of MSCs migration, showed a 4-fold increase in the experimental group compared to control. Conclusions: The current study suggests the potential of intravenously administration of G-CSF as an effective strategy for treatment of severe burn injuries.
引言:烧伤是最常见的皮肤损伤之一,需要医疗干预才能完全恢复。有鉴于此,组织工程领域提出了一系列策略,包括基于支架和基于细胞的方法来恢复受损部位。材料和方法:在体内观察粒细胞集落刺激因子(G-CSF)对骨髓间充质干细胞(MSCs)进入缺损区和治疗皮肤烧伤创面的影响。将G-CSF静脉注射到遭受三度烧伤的大鼠体内。在注射后第3、5、7、15和30天,去除缺陷部位,并通过H&E和Malory三色染色进行研究。还通过流式细胞术测定血液样品中MSC的数量。结果:根据结果,与对照组相比,静脉注射G-CSF显著增加了烧伤部位的胶原沉积和浸润成纤维细胞的数量,同时降低了急性炎症反应的严重程度和炎症细胞的数量。与对照组相比,实验组血液中MSC的数量(代表MSC迁移率)增加了4倍。结论:目前的研究表明,静脉注射G-CSF是治疗严重烧伤的有效策略。
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引用次数: 2
Investigating the Effect of Fennel and Cinnamon Combined Extract on Spermatogenesis and Testis Tissues in Busulfan Induced Infertile Rats 茴香肉桂联合提取物对布苏凡诱导不育大鼠精子发生及睾丸组织影响的研究
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-09-11 DOI: 10.29252/JABR.06.03.03
R. Chegini, P. Soleimani, M. Sadeghi, Rana Mohammad Yosef, F. Zafari
Introduction: Busulfan is one of the common cancer treatment drugs with infertility side effects. Fennel and cinnamon are two medicinal plants with fertility enhancement properties. The aim of this study was to investigate the effects of fennel and cinnamon on busulfan induced infertile rats. Materials and Methods: Forty male Wistar rats were divided into four groups including: sham group: healthy rats without intervention, control group: Busulfan treated rats, fennel group: busulfan and fennel extract treated, fennel and cinnamon group: busulfan, fennel and cinnamon extract treatment. Testicular tissues were sampled and the testicular physical parameters and spermatogenesis level were evaluated by H & E staining and optical microscopy imaging. Results: The biggest and the smallest testis lengths were observed in cinnamon + fennel and fennel groups respectively (P < 0.05). The highest and lowest sperm levels were observed in the cinnamon + fennel group and fennel group respectively (P < 0.001). The total average of reproductive cells was the most in the cinnamon + fennel group (104.17) and had the least level in the control group (26.29). Conclusions: The combined extract of fennel and cinnamon significantly protect the testicular tissues against infertility effect of busulfan. However, the fennel extract alone increased the effect of busulfan in rats.
简介:布磺胺是一种常见的有不孕副作用的癌症治疗药物。茴香和肉桂是两种具有增强生育力的药用植物。本研究旨在探讨茴香和肉桂对布苏凡诱导的不育大鼠的影响。材料与方法:将40只雄性Wistar大鼠分为4组:假手术组:未干预的健康大鼠,对照组:丁磺凡治疗大鼠,茴香组:丁磺凡加茴香提取物治疗大鼠,茴香加肉桂组:丁磺凡加茴香提取物治疗大鼠,茴香加肉桂提取物治疗组。取睾丸组织标本,通过h&e染色和光学显微镜成像观察睾丸物理参数和精子发生水平。结果:肉桂+茴香组和茴香组睾丸长度最大、最小(P < 0.05);肉桂+茴香组和茴香组小鼠精子水平最高、最低(P < 0.001)。生殖细胞总数以桂皮+茴香组最多(104.17),对照组最少(26.29)。结论:茴香肉桂联合提取物对大鼠睾丸组织有明显的保护作用。而茴香提取物在大鼠体内的作用增强。
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引用次数: 1
Comparative In Silico Molecular Docking Analysis of L-Threonine-3-Dehydrogenase, a Protein Target Against African Trypanosomiasis Using Selected Phytochemicals l -苏氨酸-3-脱氢酶的硅分子对接比较分析,l -苏氨酸-3-脱氢酶是抗非洲锥虫病的蛋白质靶点
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-09-11 DOI: 10.29252/JABR.06.03.04
Tehseen Dhorajiwala, S. Halder, L. Samant
Introduction: African trypanosomiasis is a neglected tropical disease caused by protozoa Trypanosoma brucei and transmitted via the bite of tsetse fly. The target protein of T. brucei is L-threonine-3-dehydrogenase, which has been selected for this study due to its metabolic importance for the parasite’s survival. The protein was docked with those phytochemicals having in vitro anti trypanosomal activity after passing in silico drug-likeness filters along with standard drug eflornithine and pentamidine available against the disease. Materials and Methods: A 3D structure of L-threonine-3-dehydrogenasewas downloaded from Protein Data Bank (PDB) with Id: 5K4Y) and Pictorial database of 3D structures in the Protein Data Bank (PDBsum) was used to retrieve the active sites of the protein. The reviewed ligands were screened using SwissADME, Lipinski’s rule of 5, and Molinspiration servers along with standard drugs and docked using AutoDock Vina and AutoDock 4.2.6. The 2D and 3D interacting residues were observed using Discovery Studio. Results: Ligand Camptothecin which inhibited T. brucei during in vitro cytotoxic assays gave better binding affinity scores than the standard drugs (eflornithine and pentamidine) selected for this study. Camptothecin showed interaction with those active site residues where ligand NAD (nicotinamide-adenine-dinucleotide) binds to the target protein, which is a significant restricting pocket for the hindrance of the parasite. Conclusions: Camptothecin derived from Camptotheca acuminata trees has the potential to be used as a better alternative than the standard drugs because of its less toxicity, better binding affinity, and specificity towards the inhibition of target protein.
简介:非洲锥虫病是一种被忽视的热带疾病,由原生动物布鲁氏锥虫引起,通过舌蝇叮咬传播。布鲁氏菌的靶蛋白是L-苏氨酸-3-脱氢酶,由于其对寄生虫生存的代谢重要性,因此被选择用于本研究。该蛋白质与那些具有体外抗锥虫活性的植物化学物质对接,然后与可用于对抗该疾病的标准药物依氟鸟氨酸和戊脒一起通过硅药物相似过滤器。材料和方法:从蛋白质数据库(PDB)下载的L-苏氨酸-3-脱氢酶的3D结构(Id:5K4Y)和蛋白质数据库中的3D结构图数据库(PDBsum)用于检索蛋白质的活性位点。使用SwissADME、Lipinski规则5和Molinspiration服务器以及标准药物筛选所审查的配体,并使用AutoDock Vina和AutoDock 4.2.6对接。使用Discovery Studio观察2D和3D相互作用的残基。结果:在体外细胞毒性试验中抑制布鲁氏菌的配体喜树碱比本研究选择的标准药物(依氟鸟氨酸和戊脒)具有更好的结合亲和力得分。喜树碱显示出与配体NAD(烟酰胺腺嘌呤二核苷酸)与靶蛋白结合的活性位点残基的相互作用,这是阻碍寄生虫的重要限制口袋。结论:从喜树中提取的喜树碱具有毒性小、结合亲和力强、对靶蛋白抑制特异性强等优点,有可能成为比标准药物更好的替代品。
{"title":"Comparative In Silico Molecular Docking Analysis of L-Threonine-3-Dehydrogenase, a Protein Target Against African Trypanosomiasis Using Selected Phytochemicals","authors":"Tehseen Dhorajiwala, S. Halder, L. Samant","doi":"10.29252/JABR.06.03.04","DOIUrl":"https://doi.org/10.29252/JABR.06.03.04","url":null,"abstract":"Introduction: African trypanosomiasis is a neglected tropical disease caused by protozoa Trypanosoma brucei and transmitted via the bite of tsetse fly. The target protein of T. brucei is L-threonine-3-dehydrogenase, which has been selected for this study due to its metabolic importance for the parasite’s survival. The protein was docked with those phytochemicals having in vitro anti trypanosomal activity after passing in silico drug-likeness filters along with standard drug eflornithine and pentamidine available against the disease. Materials and Methods: A 3D structure of L-threonine-3-dehydrogenasewas downloaded from Protein Data Bank (PDB) with Id: 5K4Y) and Pictorial database of 3D structures in the Protein Data Bank (PDBsum) was used to retrieve the active sites of the protein. The reviewed ligands were screened using SwissADME, Lipinski’s rule of 5, and Molinspiration servers along with standard drugs and docked using AutoDock Vina and AutoDock 4.2.6. The 2D and 3D interacting residues were observed using Discovery Studio. Results: Ligand Camptothecin which inhibited T. brucei during in vitro cytotoxic assays gave better binding affinity scores than the standard drugs (eflornithine and pentamidine) selected for this study. Camptothecin showed interaction with those active site residues where ligand NAD (nicotinamide-adenine-dinucleotide) binds to the target protein, which is a significant restricting pocket for the hindrance of the parasite. Conclusions: Camptothecin derived from Camptotheca acuminata trees has the potential to be used as a better alternative than the standard drugs because of its less toxicity, better binding affinity, and specificity towards the inhibition of target protein.","PeriodicalId":14945,"journal":{"name":"Journal of Applied Biotechnology Reports","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47236007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Pleurotus ostreatus Laccase Decolorization of Remazol Brilliant Violet 5R Dye: Statistical Optimization and Toxicity Studies on Microbes and its Kinetics 平菇漆酶对瑞玛唑艳紫5R染料脱色的统计优化及微生物毒性及其动力学研究
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2019-09-11 DOI: 10.29252/JABR.06.03.02
Preethi Thozhukattu Valliyaparambil, Kathireshan Kaliyaperumal, N. Gopakumaran
Introduction: Nowadays, enzyme-based removal of hazardous dyes that pollute the environment has been considered as a substitute and eco-friendly method compared to the physical and chemical method. The present study was conceived in order to obtain the optimal condition for laccase-mediated (purified from the Pleurotus ostreatus PKN04) decolorization of Remazol Brilliant Violet 5R dye; a mono-azo dye, using the central composite design of response surface methodology (RSM). Materials and Methods: The design of experiment was suggested with 6 variables including pH, temperature, incubation time, agitation, dye concentration, and enzyme concentration, which were applied in order to optimize the decolorization process. The kinetic and energetic factors of laccases for the enzymatic removal of Remazol Brilliant Violet 5R dye was investigated. Results: Decolorization of Remazol Brilliant Violet 5R was maximally 95.72%, which had occurred at 6.0 pH, 40°C temperature, 60 minutes incubation time, 50 rpm agitation, 50 ppm dye concentration, and 100 IU/mL enzyme concentration. The obtained results of kinetic introduced the laccase-catalyzed decolorization of Remazol Brilliant Violet 5R as an endothermic reaction with Km and Vmax values of 0.801 mM and 387 mM/mg/min, respectively. In addition to the above results, the toxicity study against bacteria revealed that the toxicity of laccase-treated dye drastically reduced to the untreated dye. Conclusions: The results of the present analysis reveal that the Pleurotus ostreatus laccase is an efficient biocatalyst for decolorization of synthetic dye Remazol Brilliant Violet 5R dye.
目前,酶法脱除污染环境的有害染料已被认为是一种替代物理和化学方法的环保方法。本研究旨在获得漆酶介导(从平菇PKN04中纯化)脱色雷马佐亮紫5R染料的最佳条件;一种单偶氮染料,采用响应面法(RSM)的中心复合设计。材料与方法:在pH、温度、孵育时间、搅拌、染料浓度、酶浓度6个变量下进行实验设计,以优化脱色工艺。研究了漆酶酶法脱除雷马佐亮紫5R染料的动力学和能量因素。结果:在6.0 pH、40℃温度、60 min孵育、50 rpm搅拌、50 ppm染料浓度、100 IU/mL酶浓度条件下,Remazol Brilliant Violet 5R的脱色率最高可达95.72%。动力学结果表明,漆酶催化雷马唑亮紫5R脱色为吸热反应,Km和Vmax分别为0.801 mM和387 mM/mg/min。除上述结果外,对细菌的毒性研究表明,漆酶处理后的染料的毒性大大降低。结论:平菇漆酶是合成染料雷马唑亮紫5R染料脱色的有效生物催化剂。
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引用次数: 1
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Journal of Applied Biotechnology Reports
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