Gold Bulletin最新文献_第2页

Gold nanocluster triggering near-infrared photocatalytic oxidations 金纳米团簇引发近红外光催化氧化

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-04-27 DOI: 10.1007/s13404-022-00315-x

Man-Bo Li

引用次数: 1

Phytoremediation ability of Helichrysum arenarium plant for Au and Ag: case study at Demirören village (Gümüşhane, Turkey) 蜡菊(helichryum arenarium)植物对金、银的修复能力:以土耳其Demirören村(g<s:1> m<e:1> hane)为例

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-04-12 DOI: 10.1007/s13404-022-00313-z

Alaaddin Vural, Semaneh Safari

{"title":"Phytoremediation ability of Helichrysum arenarium plant for Au and Ag: case study at Demirören village (Gümüşhane, Turkey)","authors":"Alaaddin Vural, Semaneh Safari","doi":"10.1007/s13404-022-00313-z","DOIUrl":"10.1007/s13404-022-00313-z","url":null,"abstract":"<div><h2>Abstract\u0000</h2><div><p>It was investigated ability of <i>Helichrysum arenarium</i> plant, in phytoextraction, phytostabilization, and phytoremediation in this study. Soil and plant samples were collected from the Demirören alteration site which has the potential of gold mineralization and analyzed for gold and silver. When the results of the analysis were evaluated, it was determined that the gold and silver contents in the soil did not show compatibility with the gold and silver contents of the plants grown at the same point. It was concluded that the high gold and silver concentrations in the plants are related to the hydrothermal alteration and weathering at the point where the plants grow. For investigation of phytoremediation ability of the plant, translocation factor (TF), bio-concentration factor (BCF), and bioaccumulation factor (BAF) were calculated. The values of TF, BAF, and BCF for Ag are equal 0.33, 0.043, and 0.13 and for Au are equal 2.04, 0.59, and 0.29, respectively. So, obtained data show that <i>Helichrysum arenarium</i> is not appropriate for phytoextraction and phytostabilization of gold and silver in this case, but <i>H. arenarium</i> can be used in phyto-mining and for biogeochemical exploration of gold. Considering that the gold and silver concentrations in the developed soil in the study area are low concentrations, it is predicted that a similar study will yield satisfactory-interesting results when it is made in plants grown on the gold mineralization/enrichment areas.</p></div></div>","PeriodicalId":55086,"journal":{"name":"Gold Bulletin","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13404-022-00313-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4485096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Obituary for Masatake Haruta (1947–2022) 春田正武的讣告（1947–2022）

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-03-19 DOI: 10.1007/s13404-022-00312-0

Toru Murayama, Tamao Ishida

引用次数: 0

Assessment of microRNA-21 using gold nanoparticle-DNA conjugates based on colorimetric and fluorescent detection 基于比色和荧光检测的金纳米颗粒- dna偶联物对microRNA-21的评价

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-03-15 DOI: 10.1007/s13404-022-00308-w

Nasrin Zare, Razieh Ghasemi, Laleh Rafiee, Shaghayegh Haghjooy Javanmard

{"title":"Assessment of microRNA-21 using gold nanoparticle-DNA conjugates based on colorimetric and fluorescent detection","authors":"Nasrin Zare, Razieh Ghasemi, Laleh Rafiee, Shaghayegh Haghjooy Javanmard","doi":"10.1007/s13404-022-00308-w","DOIUrl":"10.1007/s13404-022-00308-w","url":null,"abstract":"<div><p>The miR-21 detection is essential for the accurate and early diagnosis or prognosis of most diseases. In the current study, the miR-21 detection method was performed based on the exploitation of the simple colorimetric biosensor due to the unique surface plasmon resonance (SPR) absorption of gold nanoparticles. AuNPs were functionalized with the specific DNA probes on the gold surface by Au-SH bond. Two strategies are proposed to detect the miR-21. In the first strategy, probes (DNA1 and DNA2) were complementary to the sequence of the miR-21. When miR-21 is introduced, the hybridization reaction is triggered between the golden nanoparticles- (GNP)-DNA conjugates and targets, resulting in changes in SPR absorption band and macroscopic color of the AuNPs solution. In the second strategy, we used a fluorescence sequence (DNA3-FAM), which was complimentary of DNA1. The DNA3-FAM was released after hybridization of miR-21 with DNA1 and DNA2. The free DNA3-FAM sequences in plate wells containing 1% agarose gel were assessed by fluorescent microscope. The combination of two strategies and conventional equipment such as UV–Vis spectrometers and fluorescent microscopes could be useful in detecting the desired miRNAs (miR-21).</p></div>","PeriodicalId":55086,"journal":{"name":"Gold Bulletin","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4617605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Formation of gold hollow spheres by rapid heating–cooling process 快速加热-冷却工艺制备金空心球

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-03-08 DOI: 10.1007/s13404-022-00311-1

Lin Zhang, Jianjun Zhang, Quan Zheng, Ying Xu, Xinli Kou, Tao Li

引用次数: 1

Comparison of polyampholyte derivative of chitosan with bisphthalimides of low molecular weight in the green synthesis of Au nanoparticles 壳聚糖聚两性衍生物与低分子量双酞亚胺绿色合成金纳米颗粒的比较

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-02-15 DOI: 10.1007/s13404-022-00310-2

Martín Caldera Villalobos, Miguel Ángel García Castro, Jesús García Serrano, Ana M. Herrera González

{"title":"Comparison of polyampholyte derivative of chitosan with bisphthalimides of low molecular weight in the green synthesis of Au nanoparticles","authors":"Martín Caldera Villalobos, Miguel Ángel García Castro, Jesús García Serrano, Ana M. Herrera González","doi":"10.1007/s13404-022-00310-2","DOIUrl":"10.1007/s13404-022-00310-2","url":null,"abstract":"<div><h2>\u0000Abstract\u0000</h2><div><p>This work reports the chemical modification of chitosan with phthalimide moieties and the synthesis of two bisphthalimides (BPIs) with low molecular weight useful in the green synthesis of Au nanoparticles. The polyampholyte derivative of chitosan was obtained in water while the two BPIs, <i>N,N´</i>-(1,3-phenylene)bis(phthalimide-5-carboxylic acid) (BPI-1) and <i>N,N´</i>-(1,4-phenylene)bis(phthalimide-5-carboxylic acid) (BPI-2) were obtained by solid state reaction without the use of organic solvents. The polyampholyte and two BPIs were soluble in water; therefore, they were used in the green synthesis of Au nanoparticles. The characterization of three compounds was made by FTIR and <sup>1</sup>H NMR. TEM and UV–Vis results revealed that the compounds can reduce gold ions and stabilize Au nanoparticles in the colloidal solutions. The shape of the Au nanoparticles was quasi-spherical, while the average size of Au nanoparticles stabilized with the compounds BPI-1 and BPI-2 was 3 and 12 nm, respectively. Thus, with BPI-1 was obtained Au nanoparticles with lower size than BPI-2. Finally, the average size of nanoparticles stabilized with the polyampholyte was 10 nm. However, the faster reaction to obtain nanoparticles was with the polyampholyte derivative of chitosan (5 min), due to high quantity of oxidizable groups found in the polymer structure by its high molecular weight.</p></div></div>","PeriodicalId":55086,"journal":{"name":"Gold Bulletin","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4601532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Synergic effect of paclitaxel and cisplatin associated with gold nanoparticles on HeLa cervical cells 紫杉醇和顺铂联合金纳米颗粒对HeLa宫颈细胞的协同作用

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-01-22 DOI: 10.1007/s13404-021-00305-5

Maria Laura Rodrigues Uggioni, Paulo Emilio Feuser, Jonathann Corrêa Possato, Maria Eduarda de Melo, Ellen De Pieri, Rodrigo Cercena, Alexandre Gonçalves Dal Bó, Maria Inês da Rosa, Ricardo Andrez Machado-de-Ávila

{"title":"Synergic effect of paclitaxel and cisplatin associated with gold nanoparticles on HeLa cervical cells","authors":"Maria Laura Rodrigues Uggioni, Paulo Emilio Feuser, Jonathann Corrêa Possato, Maria Eduarda de Melo, Ellen De Pieri, Rodrigo Cercena, Alexandre Gonçalves Dal Bó, Maria Inês da Rosa, Ricardo Andrez Machado-de-Ávila","doi":"10.1007/s13404-021-00305-5","DOIUrl":"10.1007/s13404-021-00305-5","url":null,"abstract":"<div><h2>Abstract </h2><div><p>The combination of two or more chemotherapy drugs and nanotechnology has emerged as an effective strategy in the fight against cancer. Paclitaxel (PTX) and cisplatin show improved cytotoxic effects on being used together in the chemotherapy of various cancer types, than when used individually. However, these chemotherapy drugs have been shown to have numerous toxic effects in cancer patients. Therefore, the aim of this study was to evaluate the cytotoxicity of PTX and cisplatin associated with gold nanoparticles (AuNps) on HeLa cells containing multiple copies of human papillomavirus 18. AuNps were successfully synthesized with a mean size of 20 to 61 nm, polydispersity index ≥ 0.3, and negative surface charge. Together, PTX and cisplatin associated with AuNps showed a higher cytotoxic effect on HeLa cells than free drugs. The combination of PTX and cisplatin with AuNps potentiated their cytotoxic effects, inducing synergism between the treatments, resulting in HeLa cell death by apoptosis.</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div></div>","PeriodicalId":55086,"journal":{"name":"Gold Bulletin","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4858264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Effect of plasmonic coupling in different assembly of gold nanorods studied by FDTD 用时域有限差分法研究了不同金纳米棒组装过程中等离子体耦合的影响

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-01-16 DOI: 10.1007/s13404-022-00307-x

Aditya K. Sahu, Satyabrata Raj

{"title":"Effect of plasmonic coupling in different assembly of gold nanorods studied by FDTD","authors":"Aditya K. Sahu, Satyabrata Raj","doi":"10.1007/s13404-022-00307-x","DOIUrl":"10.1007/s13404-022-00307-x","url":null,"abstract":"<div><p>The influence of the orientation of gold nanorods in different assemblies has been investigated using the finite difference time domain (FDTD) simulation method. To understand the relative orientation, we vary the size and angle in dimer geometries. Significant effects of plasmon coupling emerged in longitudinal resonances having end-to-end configurations of gold nanorods. The effect of orientational plasmon coupling in dimers gives rise to both bonding and anti-bonding plasmon modes. Effects of various geometries like primary monomer, dimer, trimer, and tetramer structures have been explored and compared with their higher nanorod ensembles. The asymmetric spectral response in a 4 × 4 gold nanorods array indicates a Fano-like resonance. The variation of gap distance in ordered arrays allowed modulation of the Fano resonance mode. The plasmon modes’ resonance wavelength and field enhancement have been tuned by varying the gap distance, angular orientation, size irregularity between the nanorods, and nanorod numbers in an array. The integrated nanostructures studied here are not only significant for fundamental research but also applications in plasmon-based devices.</p></div>","PeriodicalId":55086,"journal":{"name":"Gold Bulletin","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4648966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The potential of marine-based gold nanomaterials in cancer therapy: a mini-review 海洋基金纳米材料在癌症治疗中的潜力:综述

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-01-14 DOI: 10.1007/s13404-021-00304-6

Neda Baghban, Arezoo Khoradmehr, Iraj Nabipour, Amin Tamadon, Mujib Ullah

{"title":"The potential of marine-based gold nanomaterials in cancer therapy: a mini-review","authors":"Neda Baghban, Arezoo Khoradmehr, Iraj Nabipour, Amin Tamadon, Mujib Ullah","doi":"10.1007/s13404-021-00304-6","DOIUrl":"10.1007/s13404-021-00304-6","url":null,"abstract":"<div><p>Cancer is still one of the most common causes of death today despite advances in its detection and treatment. The present article reviews the application of marine-based gold nanoparticles in the diagnosis and treatment of cancer. The main data were collected from original research articles on the application of different marine-based gold nanoparticles in detecting and imaging cancer cells as well as in drug delivery systems and treatment of cancer. The results show the excellent anticancer potential of both gold nanoparticles and natural marine products. The most studied marine-based gold nanomaterial was chitosan-based ones, in which the role of chitosan is a stabilizer not an anticancer agent. Despite the excellent anticancer potential of different marine natural products, limited studies have been conducted using gold nanoparticles in their composition in cancer therapy. Moreover, most of these studies are related to their application as a drug delivery system not an anticancer drug. Although there are serious challenges in the application of nanoparticles in medicine, marine-based gold nanomaterials may promise an interesting novel strategy in the oncology field.</p></div>","PeriodicalId":55086,"journal":{"name":"Gold Bulletin","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4573836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Fibers covered with 3D interconnected network of Au nanostructures and their application in SERS detection 三维互连金纳米结构覆盖的纤维及其在SERS检测中的应用

IF 2.2 4区工程技术

Gold Bulletin Pub Date : 2022-01-04 DOI: 10.1007/s13404-021-00303-7

Cuiping Wang, Huan Zhang, Chunrong Wang

引用次数: 1