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          活體轉基因--鉗狀電極

          簡要描述:

          活體轉基因--鉗狀電極用于體內藥物/基因/蛋白質傳遞及基因治療.--鉗狀電極Tweezertrodes電極是一種可復用的小鉗狀電極,主要用于體內的藥物或基因的傳遞。--鉗狀電極是一個標準的11.5厘米的小鉗子,其尖部為嵌入的不銹鋼圓盤狀電極,兩盤的間隙可調至2厘米,并有一個陽極指示器。

          活體轉基因--鉗狀電極用于體內藥物/基因/蛋白質傳遞及基因治療電極.
          活體轉基因--鉗狀電極Tweezertrodes是一種可復用的小鉗狀電極,主要用于體內的藥物或基因的傳遞。電極是一個標準的11.5厘米的小鉗子,其尖部為嵌入的不銹鋼圓盤狀電極,兩盤的間隙可調至2厘米,并有一個陽極指示器。
          Tweezertrodes電極有兩種規格,45-0118為直徑:7mm的電極盤,45-0119為直徑:10mm的電極盤
          當把感興趣的分子注射到體內后,用電極盤夾住相關組織,然后給出電脈沖,使孔道開始形成,將分子整合到直接與電極盤接觸的組織細胞內。

          Tweezertrodes are reusable, tweezer-style in vivo electrodes fordrug or gene delivery in animals. Tweezertrodes consist of astandard 11.5 cm tweezer that has been modified with stainlesssteel circular or disk electrodes at the tip. The gap between theelectrode disks may be adjusted from under 1 mm to over 2 cm.Tweezertrodes come in two models. Model 520 has an electrode diskdiameter of 7 mm and Model 522 has a diameter of 10 mm.Tweezertrodes may be cleaned with a mild detergent and sterilizedwith ethanol or ethylene oxide. These electrodes are connected to apulse generator with the Model 524 Connection Cable, and arecompatible with most BTX Electroporation System
          Applications

          Tweezertrodes may be used for many in vivo applications, includinggene and drug delivery. Following localized or systemic injectionof the molecule of interest, the Tweezertrode electrode disks areused to grasp the tissue of interest. An electroporation pulse isthen given, initiating pore formation and incorporation of themolecule into the cells of the tissue in direct contact with theelectrode disks. Suzuki et al. used Tweezertrodes to deliver aGreen Fluorescent Protein (GFP) gene into rat liver. The authorsdemonstrated successful gene transfer and expression in situ.1,2Saito and Nakatsuji used a similar electrode to introduce plasmidDNA during ex-utero and in-utero electroporation.7 Sato et al. usedthe Tweezertrode with the T820 to introduce EGFP expressing plasmidin mouse testis.8 Tweezertrodes complement BTX Genetrode Models508, 510, Caliper Electrode Models 384 and 384L, 2-Needle ArrayModels 530 and 532 as the newest addition to our in vivo electrodeline. The Tweezertrodes can be used to reproduce applicationsrequiring the caliper electrodes, including gene therapy,transdermal drug delivery and electroporation therapy.3,4,5,6 

          Technical Specifications


          Standard Capabilities 
          Voltage Range: 0V - 200V (Do not use AC current) 
          Pulse Length Range: 1 µsec - 200 msec 
          Physical Characteristics 
          Model 520 
          Tweezertrode Length: 11.5 cm 
          Electrode Diameter: 7 mm 
          Electrode Material: Stainless steel 
          Model 522 
          Tweezertrode Length: 11.5 cm 
          Electrode Diameter: 10 mm 
          Electrode Material: Stainless steel 
          Generator Compatibility ECM T820, 630, 830, 2001 

          Ordering Information

          System Model Available Configurations 
          520 Tweezertrode 520
          Tweezer Electrode with stainless steel plated 7 mm diameterelectrode disk for in vivo applications 

          523 Tweezertrode 523
          Tweezer Electrode with stainless steel plated 10mm diameterelectrode disk for in vivo applications 

          Accessory Model Description 
          524 Tweezertrode Connection Cable 

          References
          Suzuki et al., Direct Gene Transfer into Rat Liver Cells by in vivoElectroporation, FEBS Letters, 425: 436-440 (1998) 
          BTX Electroporation Protocol PR0363 (1998) 
          Zhang et al., In vivo transdermal delivery of large molecules bypressure-mediated electroincorporation and electroporation: a novelmethod for drug and gene delivery, Bioelectrochemistry andBioenergetics, 42: 283-292 (1997) 
          Dev, Giordano and Brown, In vivo delivery of gene to rabbit carotidartery by electroporation, Third U.S. / Japan Symposium on DrugDelivery Systems (Abstr.), 38 (1995) 
          Dev, Killing cancer cells with a combination of pulsed electricfields and chemotherapeutic agents, Cancer Watch, 3: 12-14 (1994)
          BTX Electroporation Therapy Protocols ECT001-ECT005 (1995) 
          Saito and Nakatsuji, Developmental Biology, 240: 237-246 (2001)
          Sato et al., Molecular Reproduction and Development, 61: 49-56(2002) 

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