|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Phytochemical and anti-bacterial activity of epidermal glands extract of Christella parasitica (L.) H. Lev.显示文摘Objective:To study the morphology,biochemistry and bioactivity of the epidermal glands of the glandular morphotype of Christella parasitica(C.parasitica)(L.) H.Lev.Methods: Morphological studies on epidermal glands were earned out by using light microscope and scanning electron microscope.To prepare the extract,the shade-dried fronds of glandular morphotype were soaked in acetone.For antibacterial studies paper disc method was followed by using various pathogenic bacteria.Results:Detailed micromorphological,phytochemical and bioactivity studies on a medicinal fern C.parasitica(L.) H.Lev.showed its inlraspecific variation in antibacterial activity.The presence or absence of the epidermal glands was the key factor for antibacterial activity in the morphovariants of this species.The epidermal glands were orange-coloured,stalked and elongated ones of about 84.2μm×45μm,and distributed on the undersurface of cosla,coslules and veins in croziers,young and mature leaves.Frequency of glands varied from 15/cm on costa in mature leaves to 140/cm on costules in croziers.The acetone extract of the glands showed antibacterial activities and also toxic effect against mosquito larvae and tadpoles of frog.Preliminary phytochemical analysis and HPLC studies of the gland extract showed the presence of various kinds of terpenoids,alkaloids,tannins,saponins and flavonoids in it.Conclusions:The present study shows that epidermal glands of the glandular morphotype of C. parasitica(L.) H.Lev.have several bioactive compounds and such rare moiphovariant should be conserved in nature.The next step is to isolate the pure compounds and to screen the bioactivity of individual compounds of the epidermal glands. | Paul Raj K Irudayaraj V Johnson M Patric Raja D | 2011 | Asian Pacific Journal of Tropical Biomedicine2011，1，1： | 14 |
| 2 | Dynamic Contrast-Enhanced Perfusion MR Imaging Measurements of Endothelial Permeability: Differentiation between Atypical and Typical Meningiomas显示文摘BACKGROUND: AND PURPOSE: The measurement of relative cerebral blood volume (rCBV) and the volume transfer constant (K(trans)) by means of dynamic contrast-enhanced (DCE) perfusion MR imaging (pMRI) can be useful in characterizing brain tumors. The purpose of our study was to evaluate the utility of these measurements in differentiating typical meningiomas and atypical meningiomas. METHODS: Fifteen patients with pathologically confirmed typical meningiomas and seven with atypical meningiomas underwent conventional imaging and DCE pMRI before resection.rCBV measurements were calculated by using standard intravascular | Law M Zagzag D Golfinos JG Knopp EA Johnson G | 2003 | 中国神经肿瘤杂志2003，1，3： | 10 |
| 3 | Role of microbial dysbiosis in the pathogenesis of esophageal mucosal disease:A paradigm shift from acid to bacteria?显示文摘Genomic sequencing,bioinformatics,and initial speciation(e.g.,relative abundance)of the commensal microbiome have revolutionized the way we think about the“human”body in health and disease.The interactions between the gut bacteria and the immune system of the host play a key role in the pathogenesis of gastrointestinal diseases,including those impacting the esophagus.Although relatively stable,there are a number of factors that may disrupt the delicate balance between the luminal esophageal microbiome(EM)and the host.These changes are thought to be a product of age,diet,antibiotic and other medication use,oral hygiene,smoking,and/or expression of antibiotic products(bacteriocins)by other flora.These effects may lead to persistent dysbiosis which in turn increases the risk of local inflammation,systemic inflammation,and ultimately disease progression.Research has suggested that the etiology of gastroesophageal reflux disease-related esophagitis includes a cytokine-mediated inflammatory component and is,therefore,not merely the result of esophageal mucosal exposure to corrosives(i.e.,acid).Emerging evidence also suggests that the EM plays a major role in the pathogenesis of disease by inciting an immunogenic response which ultimately propagates the inflammatory cascade.Here,we discuss the potential role for manipulating the EM as a therapeutic option for treating the root cause of various esophageal disease rather than just providing symptomatic relief(i.e.,acid suppression). | Steve M D'Souza Kevin Houston Lauren Keenan Byung Soo Yoo Parth J Parekh David A Johnson | 2021 | World Journal of Gastroenterology2021，27，18： | 8 |
| 4 | 抗菌蜂蜜预防腹膜透析相关感染:一项随机对照试验显示文摘背景 目前缺少指导预防腹膜透析相关感染策略的研究证据。抗菌蜂蜜作为一种新型、廉价、有效的局部预防性使用的药物,不会诱导细菌耐药。因此,我们评估,对鼻内定植金黄色葡萄球菌的患者,与同时进行腹膜管外出口部位常规护理加上鼻内莫匹罗星去定植的方法相比,腹膜管外出口部位每日使用蜂蜜,是否会延迟首次出现腹膜透析相关感染的时间。 | Johnson D W Badve S V Pascoe E M 陈玉华 | 2014 | 中国感染控制杂志2014，13，2： | 7 |
| 5 | 慢性淋巴细胞白血病诊治指南显示文摘流行病学
慢性淋巴细胞白血病(CLL)在西方国家很常见,占65岁以上白血病患者的65%.中位发病年龄65~70岁.30岁以下极为罕见,但20%~30%病例于55岁前发病,年发病率约3/10万.欧洲、澳大利亚、北美白人以及黑人的发病率是印度、中国及日本的20~30倍.男女之比约2:1.无确凿证据显示,接触化学物质和射线、饮食、吸烟、病毒感染和自身免疫性疾病为本病的高危因素,但患者一级和二级亲属淋巴系统恶性肿瘤发病率增高.许多家族尚存在患者后代发病年龄更早、病情更重的现象.经治和未治患者第二肿瘤发病率增高. | Oscier D Fegan C Hillman P Illide T Johnson S Maguir P Matutes M Milligan D 孙蕾 高举 | 2005 | 国外医学(输血及血液学分册)2005，28，1： | 6 |
| 6 | 长期应用埃索美拉唑是维持已愈合糜烂性食管炎疗效及控制胃食管反流症状的有效方法显示文摘 | Johnson DA Benjamin SB Vakil NB Goldstein JL Lamet M Whipple J Damico D Hamelin B 钟捷 | 2002 | 中华消化杂志2002，22，12： | 6 |
| 7 | Re- sponses in ovulation rate, embryonal survival, and litter traits in swine to 14 generations of selection to increase litter size 显示文摘 | JOHNSON R K NIELSEN M K CASEY D S | 1999 | J Anim Sci1999，77，3： | 5 |
| 8 | Copolymerization of Ethylene and Propyiene with Functionalized Vinyl Monomers by PalladiumII) Catalysts显示文摘 | Johnson L K Killian C M Arthur S D | | 0，，： | 4 |
| 9 | Quality in the technical performance of colonoscopy and the continuous quality improvement process for colonoscopy: recommendations of the U.S. Multi-Society Task Force on Colorectal Cancer显示文摘 | Douglas K Rex John H Bond Sidney Winawer Theodore R Levin Randall W Burt David A Johnson Lynne M Kirk Scott Litlin David A Lieberman Jerome D Waye James Church John B Marshall Robert H Riddell | 2002 | The American Journal of Gastroenterology2002，，6： | 3 |
| 10 | Fix and replace:An emerging paradigm for treating acetabular fractures in older patients显示文摘Acetabular fractures in older patients are challenging to manage.The 'fix and replace' construct may present a new paradigm for the management of these injuries.We present the current challenge of acetabular fractures in older patients.We present this in the context of the current literature.This invited editorial presents early results from our centre and the ongoing challenges are discussed. | Elizabeth K Tissingh Abigail Johnson Joseph M Queally Andrew D Carrothers | 2017 | World Journal of Orthopedics2017，8，3： | 2 |
| 11 | Management of venous thromboembolism in patients with advanced cancer: a systematic review and meta-analysis显示文摘 | Simon IR Noble Mike D Shelley Bernadette Coles Susan M Williams Andrew Wilcock Miriam J Johnson | 2008 | Lancet Oncology2008，，6： | 2 |
| 12 | Softwood cuttings for propagation of red alder planting stock显示文摘 | Radwan M A T A Max D W Johnson | 1989 | New For1989，3，： | 1 |
| 13 | The complexity of flowshop and jobshop scheduling 显示文摘 | Johnson D S | 1976 | Mathematics of Operations Research1976，20，： | 1 |
| 14 | Effect of implanted Cl^- and deposited oxides on pitting behavior of aluminum显示文摘 | Sema L M Johnson C M Wall F D | 2005 | Journal of the Electrochemical Society2005，152，7： | 1 |
| 15 | Two year toxicity and carcinogenicity study of thyleugenol in F344/N rats and B6C3F(1) mice 显示文摘 | JOHNSON J D RYAN M J TOFT J D | 2000 | J Agric Food Chem2000，48，8： | 1 |
| 16 | Green-house gas contributions and mitigation potential of agriculture in the central USA显示文摘 | Johnson J M F Reicosky D C Allmaras R R | 2005 | Soil & Tillage Research2005，83，1： | 1 |
| 17 | The complexity of flowshop and jobshop scheduling显示文摘 | Garey M R Johnson D S Sethi R | 1996 | Mathematies Operations Research1996，1，11： | 1 |
| 18 | Peanut hull pel- lets as a single use sorbent for the capture of Cu( Ⅱ )from wastewater 显示文摘 | Johnson P D Watson M A Brown J | 2002 | Waste Management2002，22，5： | 1 |
| 19 | Sweet potato whitefly resistance to insecticides in Hawaii:intra-island variation is related to insecticide use显示文摘 | OMER A D JOHNSON M W TABASHNIK B E | 1993 | Entomol Exp Appl1993，67，2： | 1 |
| 20 | Automated gel permeation chromatographic preparation of vegetables fruits and crops for organophosphorus pesticides determination utilizing flame photometric detection显示文摘 | Ault J A Schofield C M Johnson L D | 1979 | Journal of Agricultural and Food Chemistry1979，27，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员