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10
2019 - 04 - 04
英國(guó)國(guó)家醫(yī)療服務(wù)系統(tǒng)(NHS)近日批準(zhǔn)了三種新的甲狀腺癌療法作為甲狀腺癌的常規(guī)療法。由國(guó)家健康和護(hù)理研究所(NICE)提出的推薦指南建議把cabozantinib(Cometriq)和索拉菲尼sorafenib(Nexavar)轉(zhuǎn)移進(jìn)癌癥藥物基金。被批準(zhǔn)的第三種藥物是樂(lè)伐替尼(Lenvatinib/Lenvima),過(guò)去這個(gè)藥物僅僅在出于同情的情況下提供使用。英國(guó)癌癥研究中心的高級(jí)政策顧問(wèn)Rose Gray對(duì)這些決定感到高興,他認(rèn)為這對(duì)于病人而言是好消息。病人選擇有限!Cabozantinib被推薦用于治療無(wú)法進(jìn)行手術(shù)治療或者已經(jīng)轉(zhuǎn)移的甲狀腺髓樣癌。英國(guó)每年約有80例這種病人。Gray說(shuō)臨床結(jié)果顯示Cabozantinib能夠延緩癌癥進(jìn)展。這是僅有的治療甲狀腺髓樣癌的兩種藥物之一。Lenvatinib和sorafenib被批準(zhǔn)用于治療手術(shù)或者放射性碘治療無(wú)效的分化型甲狀腺癌,這是最常見的種類。手術(shù)或者放射性碘治療后,這兩種藥物是這些病人的唯二選擇。每年英國(guó)約有200人能由于這兩種藥物獲益。Lenvatinib和sorafenib比通常認(rèn)為可以接受的效果差一點(diǎn),但是在病人報(bào)道他們生活質(zhì)量得到改善后,NICE批準(zhǔn)了這兩種藥物?!癗ICE從一些病人口中聽說(shuō)了這些藥物如何改善癥狀,這表明這些藥物在癌癥病人身上的價(jià)值?!盙ray說(shuō)道。NICE健康技術(shù)評(píng)估中心執(zhí)行主任Mirella Marlo...
11
2019 - 08 - 09
今日,美國(guó)FDA批準(zhǔn)羅氏(Roche)公司開發(fā)的NTRK,ROS1和ALK抑制劑Rozlytrek(entrectinib)上市,治療攜帶NTRK基因融合的實(shí)體瘤患者,以及攜帶ROS1基因突變的非小細(xì)胞肺癌患者。這也是美國(guó)FDA批準(zhǔn)的第三款“不限癌種”的抗癌療法。自從去年Loxo Oncology/拜耳(Bayer)公司聯(lián)合開發(fā)的TRK抑制劑Vitrakvi(larotrectinib)獲批以來(lái)?!安幌薨┓N”抗癌療法得到了廣大業(yè)界人士和患者的關(guān)注。還有哪些“不限癌種“療法即將問(wèn)世?“不限癌種“的抗癌療法發(fā)展的前景如何?今天的這篇文章里,藥明康德內(nèi)容團(tuán)隊(duì)將結(jié)合公開資料,與讀者分享這些問(wèn)題的答案?!安幌薨┓N“療法的理論基礎(chǔ)和面對(duì)的挑戰(zhàn)我們知道,基因突變是驅(qū)動(dòng)正常細(xì)胞癌變的關(guān)鍵。近年來(lái)高通量測(cè)序技術(shù)的進(jìn)步,讓我們獲得了許多對(duì)癌癥背后的分子生物學(xué)機(jī)理的洞見。基于這些洞見,我們對(duì)癌癥的分類不再局限于癌癥起源的組織,而是基于腫瘤細(xì)胞攜帶的特定基因變異。這一基于分子生物學(xué)生物標(biāo)志物的分類方法加快了靶向療法的開發(fā),而“不限癌種“的抗癌療法可以說(shuō)是靶向療法中比較特別的一個(gè)分支。這些靶向療法的靶點(diǎn)在起源于不同組織的多種癌癥中存在,而且”不限癌種“療法能夠在多種癌癥類型中表現(xiàn)出卓越的療效。例如去年獲批的Vitrakvi在攜帶NTRK基因融合的患者中能夠達(dá)到81%的總緩解率。而剛剛獲得FDA批準(zhǔn)的Rozl...
12
2021 - 01 - 27
2021年3月30日訊/生物谷BIOON/---神經(jīng)干細(xì)胞(neural stem cell)是指存在于神經(jīng)系統(tǒng)中,具有分化為神經(jīng)神經(jīng)元、星形膠質(zhì)細(xì)胞和少突膠質(zhì)細(xì)胞的潛能,從而能夠產(chǎn)生大量腦細(xì)胞組織,并能進(jìn)行自我更新,并足以提供大量腦組織細(xì)胞的細(xì)胞群。需要注意的是,在腦脊髓等所有神經(jīng)組織中,不同的神經(jīng)干細(xì)胞類型產(chǎn)生的子代細(xì)胞種類不同,分布也不同。 神經(jīng)干細(xì)胞的治療機(jī)理是:(i)患病部位組織損傷后釋放各種趨化因子,可以吸引神經(jīng)干細(xì)胞聚集到損傷部位,并在局部微環(huán)境的作用下分化為不同種類的細(xì)胞,修復(fù)及補(bǔ)充損傷的神經(jīng)細(xì)胞。由于缺血、缺氧導(dǎo)致的血管內(nèi)皮細(xì)胞、膠質(zhì)細(xì)胞的損傷,使局部通透性增加,另外在多種黏附分子的作用下,神經(jīng)干細(xì)胞可以透過(guò)血腦屏障,高濃度的聚集在損傷部位;(ii)神經(jīng)干細(xì)胞可以分泌多種神經(jīng)營(yíng)養(yǎng)因子,促進(jìn)損傷細(xì)胞的修復(fù);(iii)神經(jīng)干細(xì)胞可以增強(qiáng)神經(jīng)突觸之間的聯(lián)系,建立新的神經(jīng)環(huán)路。神經(jīng)干細(xì)胞應(yīng)用中存在的問(wèn)題:建立的神經(jīng)干細(xì)胞系絕大多數(shù)來(lái)源于鼠,而鼠與人之間存在著明顯的種屬差異;神經(jīng)干細(xì)胞的來(lái)源不足;部分移植的神經(jīng)干細(xì)胞發(fā)展成腦瘤;神經(jīng)干細(xì)胞轉(zhuǎn)染范圍的非選擇性表達(dá)及轉(zhuǎn)染基因表達(dá)的原位調(diào)節(jié)等等?;诖?,小編針對(duì)近年來(lái)神經(jīng)干細(xì)胞研究取得的進(jìn)展進(jìn)行一番盤點(diǎn),以饗讀者。1.Cell Stem Cell:上調(diào)核纖層蛋白B1表達(dá)讓衰老的神經(jīng)干細(xì)胞返老還童doi:10.1016/j.stem...
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產(chǎn)品名稱: EVOS? Light Cube, GFP
型號(hào):
時(shí)間: 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The GFP light cube is ideal for use with Alexa Fluor® ...
產(chǎn)品名稱: EVOS? Light Cube, DAPI
型號(hào):
時(shí)間: 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The DAPI light cube is ideal for use with Acridine, Alexa F...
型號(hào):
時(shí)間: 2019 - 04 - 12
描述This power cord is for use with EVOS® XL, FL , FL Color, and FL Auto systems in countries with Type I power plugs. The Type I electrical plug is mainly used in Australia and New Zealand, but is also used in China and parts of Asia, South America, and Africa.
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This achromat objective is ideal for general applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnificati...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This achromat objective is ideal for general applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnificati...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This achromat objective is ideal for general applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnificati...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of t...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of t...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of t...
產(chǎn)品名稱: EVOS? M7000 Imaging System
型號(hào):
時(shí)間: 2019 - 04 - 11
用途在基礎(chǔ)研究領(lǐng)域用于微觀物質(zhì)的觀察,觀察其形態(tài)及所在位置。利用光學(xué)原理,對(duì)各類組織或細(xì)胞切片或各種培養(yǎng)容器內(nèi)的細(xì)胞樣品進(jìn)行明場(chǎng)或相差、熒光觀察,進(jìn)而獲取這些樣品的成像圖片工作原理顯微鏡是利用凸透鏡的放大成像原理,將人眼不能分辨的微小物體通過(guò)內(nèi)置的物鏡放大到人眼能分辨的尺寸、通過(guò)照相機(jī)成像,圖片可實(shí)時(shí)顯示于顯示器上。功能EVOS M7000整合式系統(tǒng)集全自動(dòng)成像系統(tǒng)和集成式軟件于一體,可通過(guò)高精度、自動(dòng)化移動(dòng)載物臺(tái)可對(duì)樣品進(jìn)行準(zhǔn)確定位;全自動(dòng)聚焦可方便找到目標(biāo)分子。適用于各種應(yīng)用領(lǐng)域,包括但不限于多通道熒光成像、圖像無(wú)縫拼接、細(xì)胞密度分析、多位置血管掃描和動(dòng)態(tài)圖像拍攝。具備多種高級(jí)功能,可對(duì)拍攝的圖片進(jìn)行多種分析(細(xì)胞計(jì)數(shù)、測(cè)量計(jì)算細(xì)胞直徑和細(xì)胞間距離等),也可對(duì)活細(xì)胞進(jìn)行延時(shí)成像拍攝。
產(chǎn)品名稱: EVOS? M5000 Imaging System
型號(hào):
時(shí)間: 2019 - 04 - 11
型號(hào):
時(shí)間: 2017 - 07 - 05
凍干是指在真空狀態(tài)下,將冷凍樣品中的水份等溶劑通過(guò)升華的方式移出樣品,最終使樣品干燥的一種干燥方式。在整個(gè)凍干過(guò)程中,樣品空間結(jié)構(gòu)沒(méi)有改變,極易重新溶解,保證了樣品的生物,化學(xué)結(jié)構(gòu)和活性,因而凍干法被廣泛應(yīng)用于生物制品、酶、醫(yī)藥和微生物等方面。 美國(guó)LABCONCO冷凍干燥系統(tǒng)80年代進(jìn)入中國(guó)市場(chǎng),市場(chǎng)占有量大,用戶群遍及醫(yī)藥、衛(wèi)生、農(nóng)業(yè)、工業(yè)等科研行業(yè),多年來(lái)以儀器出色的穩(wěn)定性、實(shí)用性、人性化和完善的售后服務(wù)贏得廣大用戶的認(rèn)可。 美國(guó)LABCONCO公司的FreeZone®凍干機(jī)系列型號(hào)有2.5L、4.5L、6L、8L、12L、18L,2.5T,冷阱溫度-50℃、-84℃、-102℃、-105℃四種。各式各樣的凍干室和附件,具有一流的結(jié)構(gòu)和靈活的組合方式,以其近一個(gè)世紀(jì)的生產(chǎn)經(jīng)驗(yàn)和品牌信譽(yù)致力于滿足不同客戶的多變需要。  美國(guó)LABCONCO冷凍干燥機(jī)系統(tǒng)包括:   1. 主機(jī)選擇(有2.5L、4.5L、6L、8L、12L、18L容量可選;有臺(tái)式和立式可選)。  2. 干燥容器選擇:柜式凍干室 (bulk drying),抽...
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