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211篇 您的检索式:作者名="PAMELA J"
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1Relationship between oxidative stress and hepatic glutathione levels in ethanol-mediated apoptosis of polarized hepatic cells显示文摘AIM:To investigate the role of reactive oxygen species(ROS) in ethanol-mediated cell death of polarized hepatic(WIF-B) cells.METHODS:In this work,WIF-B cultures were treated with pyrazole(inducer of cytochrome P4502E1,CYP2E1) and/or L-buthionine sulfoximine(BSO),a known inhibitor of hepatic glutathione(GSH),followed by evaluation of ROS production,antioxidant levels,and measures of cell injury(apoptosis and necrosis).RESULTS:The results revealed that ethanol treatment alone caused a significant two-fold increase in the activation of caspase-3 as well as a similar doubling in ROS.When the activity of the CYP2E1 was increased by pyrazole pretreatment,an additional two-fold elevation in ROS was detected.However,the CYP2E1-related ROS elevation was not accompanied with a correlative increase in apoptotic cell injury,but rather was found to be associated with an increase in necrotic cell death.Interestingly,when the thiol status of the cells was manipulated using BSO,the ethanol-induced activation of caspase-3 was abrogated.Additionally,ethanol-treated cells displayed enhanced susceptibility to Fas-mediated apoptosis that was blocked by GSH depletion as a result of diminished caspase-8 activity.CONCLUSION:Apoptotic cell death induced as a consequence of ethanol metabolism is not completely dependent upon ROS status but is dependent on sustained GSH levels.Benita L McVicker Pamela L Tuma Kusum K Kharbanda Serene ML Lee Dean J Tuma 2009World Journal of Gastroenterology2009,15,21:5
2Integrative taxonomy of the Russet Bush Warbler Locustella mandelli complex reveals a new species from central China显示文摘Background: The Russet Bush Warbler Locustella(previously Bradypterus) mandelli complex occurs in mountains in the eastern Himalayas, southern China, Vietnam, the Philippines, and Indonesia. The taxonomy has been debated,with one(L. seebohmi) to four(L. seebohmi, L. mandelli, L. montis and L. timorensis) species having been recognised.Methods: We used an integrative approach, incorporating analyses of morphology, vocalizations and a molecular marker, to re-evaluate species limits in the L. mandelli complex.Results: We found that central Chinese L. mandelli differed from those from India through northern Southeast Asia to southeast China in plumage, morphometrics and song. All were easily classified by song, and(wing + culmen)/tail ratio overlapped only marginally. Both groups were reciprocally monophyletic in a mitochondrial cytochrome b(cytb) gene tree, with a mean divergence of 1.0 ± 0.2%. They were sympatric and mostly altitudinally segregated in the breeding season in southern Sichuan province. We found that the Mt Victoria(western Myanmar) population differed vocally from other L. mandelli, but no specimens are available. Taiwan Bush Warbler L. alishanensis was sister to the L. mandelli complex, with the most divergent song. Plumage, vocal and cytb evidence supported the distinctness of the south Vietnamese L. mandelli idonea. The Timor Bush Warbler L. timorensis, Javan Bush Warbler L.montis and Benguet Bush Warbler L. seebohmi differed distinctly in plumage, but among-population song variation in L. montis exceeded the differences between some populations of these taxa, and mean pairwise cytb divergences were only 0.5–0.9%. We also found that some L. montis populations differed morphologically.Conclusions: We conclude that the central Chinese population of Russet Bush Warbler represents a new species,which we describe herein, breeding at mid elevations in Sichuan, Shaanxi, Hubei, Hunan and Guizhou provinces.The taxonomic status of the other allopatric populations is less clear. However, as they differ to a degree comparable with that of the sympatric L. mandelli and the new species, we elevate L. idonea to species status, and retain L. seebohmi and L. montis as separate species, the latter with timorensis as a subspecies. Further research should focus on different populations of L. montis and the Mt Victoria population of L. mandelli.Per Alstrom Canwei Xia Pamela C Rasmussen Urban Olsson Bo Dai Jian Zhao Paul J Leader Geoff J Carey Lu Dong Tianlong Cai Paul I Holt Hung Le Manh Gang Song Yang Liu Yanyun Zhang Fumin Lei 2015Chinese Birds2015,,2:4
3Meeting report:a hard look at the state of enamel research显示文摘The Encouraging Novel Amelogenesis Models and Ex vivo cell Lines(ENAMEL) Development workshop was held on 23 June 2017 at the Bethesda headquarters of the National Institute of Dental and Craniofacial Research(NIDCR). Discussion topics included model organisms, stem cells/cell lines, and tissues/3 D cell culture/organoids. Scientists from a number of disciplines,representing institutions from across the United States, gathered to discuss advances in our understanding of enamel, as well as future directions for the field.ophir d klein olivier duverger wendy shaw rodrigo s lacruz derk joester janet moradian-oldak megan k pugach j timothy wright sarah e millar ashok b kulkarni john d bartlett thomas gh diekwisch pamela den besten james p simmer 2017International Journal of Oral Science2017,9,4:3
4Stereotactic body radiation therapy for management of spinal metastases in patients without spinal cord compression: a phase 1–2 trial显示文摘Xin Shelley Wang Laurence D Rhines Almon S Shiu James N Yang Ugur Selek Ibrahima Gning Ping Liu Pamela K Allen Syed S Azeem Paul D Brown Hadley J Sharp David C Weksberg Charles S Cleeland Eric L Chang 2012Lancet Oncology2012,,4:2
5Dried-leaf Artemisia annua: A practical malaria therapeutic for developing countries?显示文摘Artemisinin from the plant Artemisia annua(A. annua) L., and used as artemisinin combination therapy(ACT), is the current best therapeutic for treating malaria, a disease that hits children and adults especially in developing countries. Traditionally, A. annua was used by the Chinese as a tea to treat 'fever'. More recently, investigators have shown that tea infusions and oral consumption of the dried leaves of the plant have prophylactic and therapeutic efficacy. The presence of a complex matrix of chemicals within the leaves seems to enhance both the bioavailability and efficacy of artemisinin. Although about 1000-fold less potent than artemisinin in their antiplasmodial activity, these plant chemicals are mainly small molecules that include other artemisinic compounds, terpenes(mainly mono and sesqui), flavonoids, and polyphenolic acids. In addition, polysaccharide constituents of A. annua may enhance bioavailability of artemisinin. Rodent pharmacokinetics showed longer T? and T max and greater C max and AUC in Plasmodium chabaudi-infected mice treated with A. annua dried leaves than in healthy mice. Pharmacokinetics of deoxyartemisinin, a liver metabolite of artemisinin, was more inhibited in infected than in healthy mice. In healthy mice, artemisinin serum levels were > 40-fold greater in dried leaf fed mice than those fed with pure artemisinin. Human trial data showed that when delivered as dried leaves, 40-fold less artemisinin was required to obtain a therapeutic response compared to pure artemisinin. ACTs are still unaffordable for many malaria patients, and cost estimates for A. annua dried leaf tablet production are orders of magnitude less than for ACT, despite improvements in the production capacity. Considering that for > 2000 years this plant was used in traditional Chinese medicine for treatment of fever with no apparent appearance of artemisinin drug resistance, the evidence argues for inclusion of affordable A. annua dried leaf tablets into the arsenal of drugs to combat malaria and other artemisinin-susceptible diseases.Pamela J Weathers Melissa Towler Ahmed Hassanali Pierre Lutgen Patrick Ogwang Engeu 2014World Journal of Pharmacology2014,3,4:2
6Chemotaetic properties of angiopoietin-1 and angiopoietin-2,1igands for the endothelial specific receptor tryosine kinase tie2 显示文摘Maisonpierre PC Berhard W Pamela J 1998Bio Chem1998,273,18:2
7The identification, assay and purity determination of chlorpropamide, glibenclamide and tolbutamide and their tablet preparations by thin-layer chromatography显示文摘PAMELA G T SHANTA R J 1983Journal of Pharmaceutical and Biomedical Analysis1983,1,2:1
8Clinical nurse specialist influence in the conduct of research in aclinical agency显示文摘Pamela J Nelson Diane E Holland Della Derscheid Sharon J Tucker 2000Clinical nurse specialist CNS2000,21,2:1
9Mast cells as rapid innate sensors of cytomegalovirus by TLR3/TRIF signaling-dependent and -independent mechanisms显示文摘简明比喻, ‘免疫系统装载了 gun' ,被用来在能在需求上几乎立即被释放与侵略者作斗争的能分泌的小粒由于他们大量有势力支持 inflammatory 和抗菌剂调停人的存储描述桅杆房间(MC ) 的角色。在主人环境定位了边界并且与模式识别受体的一个军火库装备了, MC 被注定是渗透 endothelial 和上皮的表面的病原体的快速的天生的传感器。尽管在抗菌剂和 antiparasitic 防卫的 MC 的重要性长被欣赏了,他们在对病毒的感染发出报警的角色仅仅最近被注意了。 cytomegalovirus ( CMV )上的工作在鼠科的模型的感染在在 CMV 的天生、适应的有免疫力的监视之间的新奇串音轴作为播放器揭示了 MC 在 MC ,它与 MC degranulation 和 chemokine CCL5 的版本被联系的那感染,提高保护的 CD8 T 房间的招募到病毒复制的血管外的地点,明确地到肺 interstitium 和牙槽的上皮。这里,我们由响应主人感染为 MC 激活和作为结果的 degranulation 调查条件阐述了这些研究。令人惊讶地,数据揭示了 MC 激活的二个时间地并且机械学地不同的波浪:取决于 TLR3/TRIF 发信号并且由没包含 TLR3/TRIF 发信号的 MC 的直接感染推迟了激活的几乎立刻的间接激活。产出有选择地从 MC 发源的表示 eGFP 记者病毒的房间类型特定的 Cre 再结合识别了是的 MC 一在 vivo 新,生产鼠科的 CMV 感染的第一点击的目标房间。Marc Becker Niels AW Lemmermann Stefan Ebert Pamela Baars Angelique Renzaho Jurgen Podlech Michael Stassen Matthias J Reddehase 2015Cellular & Molecular Immunology2015,12,2:1
10The functional display of interleukin-2 on filamentous phage显示文摘Pamela J Buchli Zining Wu 1997Archives of Biochem and Biophy1997,339,1:1
11Bacte rim and human peptidylarginine deiminases: targets for inhibiting the autoimmune response in rheumatoid arthritis?显示文摘Pamela Mangat Natalia Wegner Patrick J Venables 2010Arthritis Research & Therapy2010,12,:1
12Novel energetic materials for the future force: The army pursues the next generation of propellants and explosives显示文摘Pamela J Kaste I3 2004Amptiac Newslett2004,8,4:1
132: Aunique example of a singlecomponent olefin polymerization catalyst显示文摘Pamela J Shapiro John E Bercaw 1990Organometal-lics1990,9,3:1
14Genetic polymorphisms in the paraoxonase 1 gene and risk of ovarian epithelial carcinoma 显示文摘Galina L Wilkens LR Pamela J 2008Cancer Epldem Biomar2008,17,8:1
15Novel energetic materials for the future force: the army pursues the next generation of propellants and explosives 显示文摘Pamela J Kaste B 2004The Amptiac Newsletter2004,8,4:1
16Pharmaceutical care in community pharmacies: practice and research in Brazil显示文摘de Castro MS Correr C J Pamela Mason 2007Ann Pha rmacother2007,41,9:1
17Differential immune response and pro- tective efficacy induced by components of a tuberculosis polyprotein vaccine,Mtb72F , delivered as naked DNA or re- combinant protein显示文摘YASIR AW SKEIKY MARK R ALDERSON PAMELA J OVENDALE 2004J Immun2004,172,12:1
18Mutations in the hepatocyte nuclear factor-1β gene in maturity-onset diabetes of the young(MODY3)显示文摘Kazuya Y Naohisa O Pamela J K 1996Nature1996,384,:1
19Novel energetic materials for the future force:The army pursues the next generation of propellants and explosives显示文摘Pamela J Kaste B 2004The Amptiac Newsletter2004,8,4:1
20Road culture of international long - term budget travelers 显示文摘Pamela J Riley 1988Annals of Tourism Research1988,15,3:1
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