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陆地棉品种SSR标记的多态性及用于杂交种纯度检测的研究 被引量:82
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作者 武耀廷 张天真 +1 位作者 郭旺珍 殷剑美 《棉花学报》 CSCD 北大核心 2001年第3期131-133,共3页
:用 48对 SSR引物对 30个棉花栽培品种和4个高优势杂交种的亲本进行了多态性筛选 ,结果只有 2 7对引物检测到了多态性。应用SSR3442、SSR2 4 95、SSR3347和 SSR1 2 31标记 ,区分了湘杂 2号、皖杂 40、中棉所 2 8、南抗 3号的F1杂种和它... :用 48对 SSR引物对 30个棉花栽培品种和4个高优势杂交种的亲本进行了多态性筛选 ,结果只有 2 7对引物检测到了多态性。应用SSR3442、SSR2 4 95、SSR3347和 SSR1 2 31标记 ,区分了湘杂 2号、皖杂 40、中棉所 2 8、南抗 3号的F1杂种和它们的亲本以及其它栽培品种 ; 展开更多
关键词 陆地棉 SSR标记 多态性 杂交种 纯度检测 分子鉴定
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蛹虫草(Cordycepsmilitaris)无性型的多型现象 被引量:32
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作者 梁宗琦 Rola,TVF 《菌物系统》 CSCD 北大核心 1998年第1期57-62,共6页
在萨氏琼脂和PDA上,蛹虫草Cordycepsmilitaris(Vuill)Fr.无性型,蛹草拟青霉Paecilomycesmilitaris(Kob)Br.&Sm.的一些单孢子株可自发产生突变,基于多型现象及其它形态特征可分三种类型:(1)具野生型菌株特征;产孢结构拟青霉... 在萨氏琼脂和PDA上,蛹虫草Cordycepsmilitaris(Vuill)Fr.无性型,蛹草拟青霉Paecilomycesmilitaris(Kob)Br.&Sm.的一些单孢子株可自发产生突变,基于多型现象及其它形态特征可分三种类型:(1)具野生型菌株特征;产孢结构拟青霉型(Paecilomyces-type),稳定,菌落通常不自发产生角变,大多数单孢子株属此类群。(2)属此类群的单孢子株,在PDA上可形成亮褐色至橙黄色的角变,它们典型的产孢结构为瓶梗轮生,分生孢子常聚集成头状的轮枝孢型(Verticillium-type)。在查氏培养基上则相反,拟青霉型的产孢结构占优势。单孢子株Cm-71是这一类群的代表。(3)单孢子株Cm-42是在所观察单孢子株中形态特征独特的菌株。在PDA上菌丝生长纤细,蛛网状,产孢结构轮枝孢型。蛹草拟青霉对氯酸钾(KClO3)不敏感,在浓度为6%(W/V)的KMM培养基上,23~24℃14天菌落的直径仅1~2cm,无气生菌丝生长。各单孢子株形成的不利用硝酸盐突变株(nit突变株)的途径和形态特征,也可分成类似于粉被虫草CordycepspruinosaPeteh不利用硝酸盐突变株(nit突变株)的三种类型。 展开更多
关键词 蛹虫草 蛹草拟青霉 无性型 多型现象 形态多样性
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菌物与药物(中药新领域—菌物药) 被引量:9
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作者 庄毅 《中国食用菌》 北大核心 2004年第3期3-6,共4页
介绍以真菌为主的菌物界目前的药用情况 ,分析它正式合法入药应用的困难因素与有利因素 ,提出药用真菌研究开发的步骤、内容与真菌药物的研究布局等 ,为药。
关键词 菌物 药物 药用真菌 真菌药物 处方 生产工艺 临床试验
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立枯丝核菌营养菌丝多型性观察 被引量:4
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作者 邓振山 张宝成 +2 位作者 孙志宏 徐文梅 任桂梅 《微生物学杂志》 CAS CSCD 2005年第6期56-58,共3页
采用了2种不同的方法对立枯丝核菌营养菌丝的形态进行了观察和比较,观察到2种不同的营养菌丝的形态,即菌核类和假分生孢子类。为以后进一步研究立枯丝核菌营养菌丝的多型性奠定了一定的基础。
关键词 多型性 营养菌丝 立枯丝核菌
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蜻蜒拟青霉多型性的扫描电镜观察及RAPD分析 被引量:1
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作者 刘作易 梁宗琦 +1 位作者 刘爱英 喻子牛 《菌物系统》 CSCD 北大核心 2000年第1期56-59,共4页
通过电镜扫描观察,清楚地显示了靖蜒拟青霉(Paecilomyces odonatae Liu,Liang&Liu)的两种类型产孢结构,即拟青霉型椭圆形分生抱子的链状排列和校顶孢霉型柱状分生抱子头状排列。同时将椭圆形分... 通过电镜扫描观察,清楚地显示了靖蜒拟青霉(Paecilomyces odonatae Liu,Liang&Liu)的两种类型产孢结构,即拟青霉型椭圆形分生抱子的链状排列和校顶孢霉型柱状分生抱子头状排列。同时将椭圆形分生孢子和柱状分生孢子进行单孢分离,对各单孢株作了培养特征观察,形态学观察和DNA随机片段扩增分析。结果表明,在形态学上两种孢子单孢子株之间的培养特征和显微特征均无明显差异,同时具有相同的DNA随机扩增片段电泳谱。 展开更多
关键词 电镜扫描 蜻蜓拟青霉 多型性 RAPD分析
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几种虫生束梗孢(Stilbellaceae)新种和新记录种 被引量:5
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作者 梁宗琦 《贵州农学院学报》 1991年第1期56-62,共7页
本文报道了采自我国部份地区的寄生昆虫的被毛孢(Hirsutella Pat.)及其近缘属的新种和新记录种。它们是多颈被毛孢(Hirsuiella polycolluta Liang);长白山被毛孢(Hirsutellachangbeisanensis Liang);巨形被毛孢(Hirsutella gigantea Per... 本文报道了采自我国部份地区的寄生昆虫的被毛孢(Hirsutella Pat.)及其近缘属的新种和新记录种。它们是多颈被毛孢(Hirsuiella polycolluta Liang);长白山被毛孢(Hirsutellachangbeisanensis Liang);巨形被毛孢(Hirsutella gigantea Perch);云南被毛孢(Hirsutella sp.)和枝多头霉[Polycephalomyces ramosum(Peck)Mains]。此外,本文还特别提出枝多头霉具有的重寄生现象和多型性对虫草无性型的正确确定具有重要的启示。 展开更多
关键词 被毛孢 束梗孢 真菌 支多头霉 新种
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软组织多形性玻璃样变血管扩张性肿瘤的临床病理学观察 被引量:5
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作者 董兵卫 何会女 +1 位作者 张粉娟 王坚 《临床与实验病理学杂志》 CAS CSCD 北大核心 2009年第5期465-469,共5页
目的探讨软组织多形性玻璃样变血管扩张性肿瘤(pleomorphic hyalinizing angiectatic tumor of soft parts,PHAT)的临床病理特点。方法回顾性分析6例PHAT的临床资料、组织学形态和免疫组化标记,并复习相关文献。结果6例均发生于成年人... 目的探讨软组织多形性玻璃样变血管扩张性肿瘤(pleomorphic hyalinizing angiectatic tumor of soft parts,PHAT)的临床病理特点。方法回顾性分析6例PHAT的临床资料、组织学形态和免疫组化标记,并复习相关文献。结果6例均发生于成年人,男性和女性各占3例,平均年龄为44岁。肿瘤分别位于下肢(3例)、颈部(2例)和腹膜后(1例)。临床上多表现为无痛性肿块,术前病程为3个月-38年。大体上,肿瘤境界清楚,结节状,平均直径为4.3 cm。切面呈灰白、灰红或灰褐色,部分病例可见出血性囊腔。镜下,肿瘤内含有成簇分布的薄壁扩张血管,血管壁附有一层厚的玻璃样变物质(纤维素和胶原纤维),可向血管周围间质内延伸,血管之间为片状分布的多形性瘤细胞,核大深染,核内可见假包涵体,但核分裂象罕见。部分区域内瘤细胞呈梭形,排列成条束状,类似神经鞘瘤。免疫组化标记显示,瘤细胞主要表达vimentin,部分病例还表达CD34和CD99,而S-100蛋白、α-SMA、bcl-2、EMA和CD68均为阴性。6例均经手术切除,随访8个月-13年,无1例复发。结论PHAT是一种具有低度恶性潜能的软组织肿瘤,熟悉其形态学特征有助于诊断和鉴别诊断。临床上对PHAT宜采取完整性切除,并注意随访。 展开更多
关键词 软组织肿瘤 多形性 玻璃样变 血管扩张
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培养细胞整装内质网三维结构的多态性 被引量:4
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作者 黄集前 宋今丹 《解剖学报》 CAS CSCD 北大核心 1996年第3期269-272,共4页
用高锰酸钾-锇酸固定法制备了5种培养细胞整装内质网标本,并在扫描电镜下对其三维结构进行了观察。观察结果表明内质网是由膜性小管构成的贯穿整个细胞质的管囊网络样膜性区室,并以多种形态深入到细胞伪足及突起中;细胞质中内质网... 用高锰酸钾-锇酸固定法制备了5种培养细胞整装内质网标本,并在扫描电镜下对其三维结构进行了观察。观察结果表明内质网是由膜性小管构成的贯穿整个细胞质的管囊网络样膜性区室,并以多种形态深入到细胞伪足及突起中;细胞质中内质网则表现为簇状网络(见于GCM3T3细胞)、多态性多孔扁囊样网络、筛网状网络、条索状网络、大孔条索网状和细孔扁囊样分区网络、不规则管网状和多孔管囊分区网络(见于CV-1细胞)、细管网络(见于CCL187和CCL229细胞)、球囊网络(见于CCL187和A431细胞)和不规则管网状网络(见于A431细胞)等。内质网的这种多态性提示它是一种高度可变的结构,其可变性可能与细胞特性、分化程度、细胞功能状态及细胞骨架系统的分布变化等因素有关。 展开更多
关键词 培养细胞 整装 内质网 三维结构 多态性
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Naming and outline of Dothideomycetes-2014 including proposals for the protection or suppression of generic names 被引量:4
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作者 Nalin N.Wijayawardene Pedro W.Crous +49 位作者 Paul M.Kirk David L.Hawksworth Saranyaphat Boonmee Uwe Braun Dong-Qin Dai Melvina J.D’souza Paul Diederich Asha Dissanayake Mingkhuan Doilom Singang Hongsanan E.B.Gareth Jones Johannes Z.Groenewald Ruvishika Jayawardena James D.Lawrey Jian-Kui Liu Robert Lücking Hugo Madrid Dimuthu S.Manamgoda Lucia Muggia Matthew P.Nelsen Rungtiwa Phookamsak Satinee Suetrong Kazuaki Tanaka Kasun M.Thambugala Dhanushka N.Wanasinghe Saowanee Wikee Ying Zhang Andre Aptroot H.A.Ariyawansa Ali H.Bahkali D.Jayarama Bhat Cécile Gueidan Putarak Chomnunti G.Sybren De Hoog Kerry Knudsen Wen-Jing Li Eric H.C.McKenzie Andrew N.Miller Alan J.L.Phillips Marcin Piatek Huzefa A.Raja Roger S.Shivas Bernad Slippers Joanne E.Taylor Qing Tian Yong Wang Joyce H.C.Woudenberg Lei Cai Walter M.Jaklitsch Kevin D.Hyde 《Fungal Diversity》 SCIE 2014年第6期1-55,共55页
Article 59.1,of the International Code of Nomenclature for Algae,Fungi,and Plants(ICN;Melbourne Code),which addresses the nomenclature of pleomorphic fungi,became effective from 30 July 2011.Since that date,each funga... Article 59.1,of the International Code of Nomenclature for Algae,Fungi,and Plants(ICN;Melbourne Code),which addresses the nomenclature of pleomorphic fungi,became effective from 30 July 2011.Since that date,each fungal species can have one nomenclaturally correct name in a particular classification.All other previously used names for this species will be considered as synonyms.The older generic epithet takes priority over the younger name.Any widely used younger names proposed for use,must comply with Art.57.2 and their usage should be approved by the Nomenclature Committee for Fungi(NCF).In this paper,we list all genera currently accepted by us in Dothideomycetes(belonging to 23 orders and 110 families),including pleomorphic and nonpleomorphic genera.In the case of pleomorphic genera,we follow the rulings of the current ICN and propose single generic names for future usage.The taxonomic placements of 1261 genera are listed as an outline.Protected names and suppressed names for 34 pleomorphic genera are listed separately.Notes and justifications are provided for possible proposed names after the list of genera.Notes are also provided on recent advances in our understanding of asexual and sexual morph linkages in Dothideomycetes.A phylogenetic tree based on four gene analyses supported 23 orders and 75 families,while 35 families still lack molecular data. 展开更多
关键词 Article 59.1 ASCOMYCOTA One name Phylogeny pleomorphism
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Virus Destruction by Resonance
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作者 Auguste Meessen 《Journal of Modern Physics》 2020年第12期2011-2052,共42页
Viruses and other microbes can be inactivated in a selective way by subjecting them to an oscillating electric field of adequate frequency. Royal R. Rife discovered this method already about 100 years ago. He proved i... Viruses and other microbes can be inactivated in a selective way by subjecting them to an oscillating electric field of adequate frequency. Royal R. Rife discovered this method already about 100 years ago. He proved its efficiency by means of high resolution microscopes and in 1934, by controlled clinically tests. However, these results seemed to be unbelievable, since the underlying mechanism was not yet understood. Actually, we are faced with three problems: 1) the functioning of Rife’s supermicroscopes, 2) his observation that bacteria can undergo size reduction, and 3) the decisive resonance phenomenon. We explain the high magnification and resolving power of Rife’s microscopes and show that new discoveries confirm that the postulate of invariable forms of bacteria has to be abandoned. Then we prove that forced oscillations of virus spikes lead to a peculiar resonance, because of nonlinear effects. It causes total destruction of the virus by rupture of its coating. The same theory applies to bacteria and nanobacteria, because of their pili. The worldwide coronavirus pandemic, the constant threat of unpredictable mutations and the now available explanations should make it obvious that biophysical methods cannot be neglected anymore. 展开更多
关键词 Rife MICROSCOPE VIRUS pleomorphism CANTILEVER RESONANCE
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Chronic Lyme Disease: Persistent Clinical Symptoms Related to Immune Evasion, Antibiotic Resistance and Various Defense Mechanisms of <i>Borrelia burgdorferi</i>
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作者 Aaron J. Smith John Oertle Dino Prato 《Open Journal of Medical Microbiology》 2014年第4期252-260,共9页
There are several factors involved in the ability of Borrelia burgdorferi to retain a persistent infection within a mammalian host. These factors of immune evasion include regulation of membrane proteins, variable epi... There are several factors involved in the ability of Borrelia burgdorferi to retain a persistent infection within a mammalian host. These factors of immune evasion include regulation of membrane proteins, variable epitopes of surface proteins, protection against the immune system through tick saliva, the ability to migrate to regions where it is not exposed to the immune system or antibiotics, invagination or invasion within various cells, pleomorphic forms, and the potential to produce biofilms. The window of conventional treatment for Lyme disease is short and has the potential to display different symptoms depending on the strain of Borrelia bugdorferi. These symptoms are dependent on the localization of Borrelia burgdorferi which correlates to the significance of diagnosing Lyme disease early to prevent such a spread throughout the body. Such complications of Borrelia burgdorferi may demand new clinical treatment discoveries for patient fighting the chronic form. 展开更多
关键词 BORRELIA BURGDORFERI Immune Response ANTIBIOTICS Surface Proteins pleomorphism Ixode TICK
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根癌农杆菌转化谷子细胞早期的细胞生物学研究 被引量:1
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作者 余迪求 许耀 李宝健 《中山大学学报(自然科学版)》 CAS CSCD 1994年第2期10-17,共8页
本文利用光镜、电镜和电镜放射自显影技术观察了有效高活性根癌农杆菌转化谷子培养细胞早期的细胞生物学过程。经复合人工信号物质和天然复合敏感抽提物处理的农杆菌可向不敏感的谷子细胞表面移动、聚集并附着,在靠近谷子细胞一极,菌... 本文利用光镜、电镜和电镜放射自显影技术观察了有效高活性根癌农杆菌转化谷子培养细胞早期的细胞生物学过程。经复合人工信号物质和天然复合敏感抽提物处理的农杆菌可向不敏感的谷子细胞表面移动、聚集并附着,在靠近谷子细胞一极,菌体形成颗粒状内含物,并表现为多型态,在 ̄3H—TdR放射性标记的高活性农杆菌与谷子细胞的共培养过程中,可依次在谷子细胞的细胞质周缘、核内及核仁区域观察到T-DNA银颗粒的分布。 展开更多
关键词 根癌农杆菌 谷子 细胞生物学
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竹黄无性型的多态性及孢子个体发育研究 被引量:2
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作者 韩燕峰 杜文 +2 位作者 梁宗琦 梁建东 董旋 《贵州农业科学》 CAS 北大核心 2010年第10期109-111,共3页
为了解竹黄菌的生长发育情况,采用光学显微镜对其无性孢子的类型和产孢方式进行了观察和研究。结果表明:竹黄无性型存在着梭形砖隔状的大分生孢子和椭圆形至近球形的共无性型小分生孢子,并首次报道了大分生孢子形态的多样性和能产生瓶... 为了解竹黄菌的生长发育情况,采用光学显微镜对其无性孢子的类型和产孢方式进行了观察和研究。结果表明:竹黄无性型存在着梭形砖隔状的大分生孢子和椭圆形至近球形的共无性型小分生孢子,并首次报道了大分生孢子形态的多样性和能产生瓶梗孢子及芽生孢子产孢方式的多型现象。 展开更多
关键词 共无性型 大分生孢子 小分生孢子 多型现象
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Tumor invasion front in oral squamous cell carcinoma 被引量:1
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作者 Juan Carlos Cuevas-González Maria Veronica Cuevas-González +1 位作者 Leon Francisco Espinosa-Cristobal Alejandro Donohue Cornejo 《World Journal of Clinical Cases》 SCIE 2022年第28期10387-10390,共4页
Oral squamous cell carcinoma is a neoplasm that originates from the epithelial mucosa.It is usually more frequent between the fifth and sixth decades of life,and more than 90% of carcinomas of the oral cavity are squa... Oral squamous cell carcinoma is a neoplasm that originates from the epithelial mucosa.It is usually more frequent between the fifth and sixth decades of life,and more than 90% of carcinomas of the oral cavity are squamous cell carcinoma.It is an invasive neoplasia with a significant recurrence rate;40% of patients present with metastases in the cervical lymph nodes at the time of diagnosis.The tumor invasion front is a characteristic of tumor growth,which can be infiltrative or noninvasive.The histopathological parameters examined include the number of mitoses,depth of the tumor,invasion pattern,degree of keratinization,and nuclear pleomorphism.For the pathologist,these parameters are routinely evaluated but are not reported to the treating physician in all cases,which we consider to be useful information when determining the therapeutic route. 展开更多
关键词 Oral squamous cell carcinoma Invasive neoplasia Therapeutic route Life Tumor growth pleomorphism
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Forecasting the number of species of asexually reproducing fungi(Ascomycota and Basidiomycota)
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作者 Nalin N.Wijayawardene Alan J.L.Phillips +21 位作者 Diana Santos Pereira Dong-Qin Dai AndréAptroot Josiane S.Monteiro Irina S.Druzhinina Feng Cai Xinlei Fan Laura Selbmann Claudia Coleine Rafael F.Castañeda-Ruiz Martin Kukwa Adam Flakus Patricia Oliveira Fiuza Paul M.Kirk Kunhiraman C.Rajesh Kumar Ilesha S.leperuma Arachchi Nakarin Suwannarach Li-Zhou Tang Teun Boekhout Chen Shuhui Tan R.P.Prabath K.Jayasinghe Marco Thines 《Fungal Diversity》 SCIE 2022年第3期463-490,共28页
Asexually reproducing fungi play a significant role in essential processes in managed and wild ecosystems such as nutrients cycling and multitrophic interactions.A large number of such taxa are among the most notoriou... Asexually reproducing fungi play a significant role in essential processes in managed and wild ecosystems such as nutrients cycling and multitrophic interactions.A large number of such taxa are among the most notorious plant and animal pathogens.In addition,they have a key role in food production,biotechnology and medicine.Taxa without or rare sexual reproduction are distinguished based on their sporulating structures and conidiomata in traditional morphology-based taxonomy.The number,variation and diversity of asexually reproducing taxa are insufficiently known,even though fungi capable of asexual reproduction may provide an untapped,rich biological resource for future exploitation.Currently,ca.30,000 asexual species belonging to ca.3800 genera have been reported(including 1388 coelomycetous and 2265 hyphomycetous genera).Recent reports(2017–2020)reiterate that the number of asexually producing fungi is higher than the number of frequently sexually-reproducing fungi.With the advent of molecular tools and the abandonment of the dual nomenclature system for pleomorphic fungi,priority criteria were established and revisited in the latest outline of fungi and fungus-like taxa.However,species numbers and taxonomic boundaries of pleomorphic taxa and their synanamorphs or synasexual morphs have yet to be addressed.The number of species of speciose genera(e.g.Alternaria,Aspergillus,Cercospora,Fusarium,Phoma and Pseudocercospora),cryptic species,species of pleomorphic genera,less studied life modes(such as lichenicolous taxa,taxa from extreme environments)and species from biodiversity-rich areas still need evaluation to achieve more reliable estimates of their diversity.This paper discusses the current knowledge on the matter,with diversity estimates,and potential obstacles in several chapters on(1)speciose genera;(2)pleomorphic genera;(3)cryptic species;(4)well-studied but insufficiently resolved taxa,e.g.leaf inhabiting species,marine fungi,(5)less studied life modes,e.g.lichenicolous,rock-inhabiting fungi,insect-ass 展开更多
关键词 Cryptic species DNA sequences Morphology pleomorphism Speciose genera Species identificat
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腮腺多形性腺瘤与腮腺浅叶腺体部分移位的临床研究
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作者 王向荣 陈华艳 +1 位作者 刘拥军 徐毅 《中国冶金工业医学杂志》 2005年第5期510-511,共2页
目的:研究腮腺多形性腺瘤与腮腺腺体移位的状况、关系、可能原因及临床影响。方法:通过对25例腮腺多形性腺瘤病人术中测量腮腺浅叶腺体的位置、肿瘤的部位、包膜等,从临床的角度研究腮腺腺体移位与腮腺多形性腺瘤的生物学行为的关系。结... 目的:研究腮腺多形性腺瘤与腮腺腺体移位的状况、关系、可能原因及临床影响。方法:通过对25例腮腺多形性腺瘤病人术中测量腮腺浅叶腺体的位置、肿瘤的部位、包膜等,从临床的角度研究腮腺腺体移位与腮腺多形性腺瘤的生物学行为的关系。结果:本组病例中36%伴有腮腺浅叶移位,特别是颌后区肿瘤伴浅叶后移明显。结论:腮腺多形性腺瘤可导致腮腺移位。这可能与肿瘤起源于腮腺腺体内以及腮腺对肿瘤提供营养有关。 展开更多
关键词 腮腺肿瘤 腺瘤 多形性 腮腺浅叶部分移位
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The Corneal Endothelium in Children after Congenital Cataract Surgery--A Comparison of Pre- and Post-Operative Results
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作者 Ewa Porwik Erita Filipek Maria Formińska-Kapuscik 《Open Journal of Ophthalmology》 2015年第2期65-73,共9页
Three months after surgery, the research group showed significantly statistical improvement in visual acuity, a statistically significant decrease in corneal endothelial cell density, a statistically significant incre... Three months after surgery, the research group showed significantly statistical improvement in visual acuity, a statistically significant decrease in corneal endothelial cell density, a statistically significant increase in the percentage of 5 and 8 sided cells and a statistically significant decrease in the percentage of six sided cells. Central corneal thickness and the percentage of 4 and 7 and more than 8 sided did not change in a statistically significant way. Comparing the test group and control group, no statistically significant differences were detected in the examined parameters. The present study also shows that the cornea in the eyes with congenital cataract does not show statistically significant changes in the density and the morphology of the corneal endothelial cells and the thickness of the cornea and in terms of corneal thickness in comparison to the corneas of healthy eyes. Although in corneas undergoing cataract occurs statistically significant changes, the influence of the cornea does not affect the improvement in visual acuity which was also demonstrated in this study. 展开更多
关键词 Congenital Cataract Surgery Corneal Endothelial Cells pleomorphism Polimegatism
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探讨GABAARG2基因在癫痫耐药机制中的作用
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作者 戚玲 李佩云 +1 位作者 邢冬梅 贾帆 《中风与神经疾病杂志》 CAS 北大核心 2017年第1期27-30,共4页
目的探讨癫痫患者中GABAARG2基因与耐药性癫痫的关系。方法选择来本院就诊的98例癫痫患者,根据对抗癫痫药物的反应性分为耐药组(观察组)46例和敏感组(对照组)52例进行研究,提取所有患者的DNA,采用PCR基因测序鉴定GABAARG2基因出现的概率... 目的探讨癫痫患者中GABAARG2基因与耐药性癫痫的关系。方法选择来本院就诊的98例癫痫患者,根据对抗癫痫药物的反应性分为耐药组(观察组)46例和敏感组(对照组)52例进行研究,提取所有患者的DNA,采用PCR基因测序鉴定GABAARG2基因出现的概率,对每一位受试者以口服传统的抗癫痫药物-苯妥英(phenytoin)方式来对比两组患者的药物口服吸收率。结果观察组和对照组之间的年龄、性别、既往病史、持续状态方面差异均无统计学意义(P>0.05)。观察组出现GABAARG2基因的概率显着高于对照组,差异具有统计学意义(χ~2=8.08,P=0.01);观察组的总体口服吸收率(68.71%±12.28%)明显低于对照组的口服吸收率(82.36%±15.31%),差异具有统计学意义(χ~2=6.78,P=0.01)。结论 GABAARG2基因的在脑内的出现会影响抗癫痫药物的效果,进而引起患者的耐药性,对临床治疗有较好的参考价值。 展开更多
关键词 GABAARG2基因 苯妥英 耐药性癫痫 多形性
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琼脂糖凝胶电泳及SSCP法在淋巴瘤克隆性TCRγ基因重排检测中的应用 被引量:3
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作者 韩西群 齐宗利 +1 位作者 贺莉 赵彤 《山东医药》 CAS 北大核心 2009年第42期23-25,共3页
目的比较琼脂糖凝胶电泳和单链构象多态性分析(SSCP)法对淋巴瘤克隆性T细胞受体(TCR)γ基因重排的检测结果,探讨TCRγ基因重排的有效检测方法。方法从T、B细胞淋巴瘤及反应增生性淋巴组织中提取DNA,分别用两组TCRγ基因重排通用引物进行... 目的比较琼脂糖凝胶电泳和单链构象多态性分析(SSCP)法对淋巴瘤克隆性T细胞受体(TCR)γ基因重排的检测结果,探讨TCRγ基因重排的有效检测方法。方法从T、B细胞淋巴瘤及反应增生性淋巴组织中提取DNA,分别用两组TCRγ基因重排通用引物进行PCR扩增,扩增产物分别进行琼脂糖凝胶电泳和SSCP。结果T、B细胞淋巴瘤均出现克隆性TCRγ基因重排。SSCP法两组PCR产物在T细胞淋巴瘤中的阳性率分别为77.6%和75.9%,B细胞淋巴瘤均为10%;与SSCP相比,琼脂糖凝胶电泳中两组PCR扩增产物的假阳性率分别为15.3%和14.4%,所有反应增生性淋巴组织均出现假阳性。结论T、B细胞淋巴瘤中都存在克隆性TCRγ基因重排,仅用琼脂糖凝胶电泳检测可能出现假阳性,SSCP灵敏性较高。 展开更多
关键词 T细胞受体γ基因 基因重排 淋巴瘤 琼脂糖凝胶电泳 单链构象多态性分析
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泪腺上皮性肿瘤261例的临床和组织病理学特点分析 被引量:33
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作者 朱建波 李彬 +3 位作者 孙宪丽 李辽青 史季桐 安裕志 《中华眼科杂志》 CAS CSCD 北大核心 2004年第4期220-224,共5页
目的 研究泪腺上皮性肿瘤的病理类型和临床特征。方法 收集 2 6 1例经病理诊断为泪腺上皮性肿瘤患者的 2 73份石蜡切片标本 ,结合患者的组织病理学和临床相关资料进行归纳分析 ,探讨不同类型泪腺上皮性肿瘤的病理学特点及临床表现。... 目的 研究泪腺上皮性肿瘤的病理类型和临床特征。方法 收集 2 6 1例经病理诊断为泪腺上皮性肿瘤患者的 2 73份石蜡切片标本 ,结合患者的组织病理学和临床相关资料进行归纳分析 ,探讨不同类型泪腺上皮性肿瘤的病理学特点及临床表现。结果 泪腺上皮性肿瘤中各种类型所占比例由高向低排列依次为多形性腺瘤 (混合瘤 ) (6 2 .3% )、泪腺囊腺癌 (2 2 .3% )、多形性腺癌 (8.8% )及泪腺腺癌 (4.0 % )等。术后复发 12例 ,总复发率为 4 .6 % ;死亡 4例 ,死亡率为 1.5 %。结论 泪腺上皮性肿瘤死亡率较低 ,但复发率较高。应根据临床资料和病理诊断决定治疗用药和术后处理 ,而以手术治疗为主。 展开更多
关键词 泪腺上皮性肿瘤 组织病理学 病理类型 诊断 治疗
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