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固相萃取(SPE)和衍生化条件的对GC/MS及LC/MS/MS法检测莱克多巴胺灵敏度的影响(英文) 被引量:2
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作者 刘晓云 何小维 +5 位作者 王国洪 christine moore Cynthia Counter 杨连生 Michael Vincent James Soares 《现代食品科技》 EI CAS 2010年第11期1283-1288,共6页
本实验探讨影响GC/MS以及LC/MS/MS检测灵敏度的影响因素。对GC/MS法的固相萃取(SPE)和衍生化条件进行优化,测试了SPE、加热时间、温度、溶液及碱基化等因素。同时测试这些条件对LC/MC/MC法的灵敏度。结果表明,碱基化为影响GC/MS法灵敏... 本实验探讨影响GC/MS以及LC/MS/MS检测灵敏度的影响因素。对GC/MS法的固相萃取(SPE)和衍生化条件进行优化,测试了SPE、加热时间、温度、溶液及碱基化等因素。同时测试这些条件对LC/MC/MC法的灵敏度。结果表明,碱基化为影响GC/MS法灵敏度的主要因素,能提高灵敏度,对衍生化条件也有影响。通过对样本进行固相萃取,碱基化处理,GC/MS法的灵敏度为0.5ng/mL,LC/MC/MC法的为0.25ng/mL。采用这种更灵敏的方法,尿液中莱克多巴胺的测试窗口期可由2d提高到6d。经过优化的GC/MS法及LC/MS/MS方法灵敏度更高,适合猪尿中莱克多巴胺的检测。 展开更多
关键词 莱克多巴胺 SPE 衍生化 GC/MS LC/MS/MS 灵敏度
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Case Report: Fever of Unknown Origin <br/>—An Unusual Presentation for Diffuse Large B-Cell Lymphoma 被引量:1
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作者 Chidinma Onweni Jennifer Treece +1 位作者 christine moore Mailien Rogers 《Journal of Cancer Therapy》 2017年第4期405-412,共8页
A 61-year-old male initially presented with fever of unknown origin. He had extensive work-up over two years including an infectious diseases panel, autoimmune studies, and Rheumatology and Hematology evaluations. The... A 61-year-old male initially presented with fever of unknown origin. He had extensive work-up over two years including an infectious diseases panel, autoimmune studies, and Rheumatology and Hematology evaluations. The patient was initially diagnosed with Adult Still’s disease and underwent an out-patient right nodal fine-needle aspiration that was indeterminate. After continued failure of treatment for Adult Still’s disease, the patient had surgical resection of a right axillary lymph node that yielded the diagnosis of diffuse large B-cell lymphoma. Further work-up revealed Epstein-Barr virus positivity, the possible trigger behind his mutation for diffuse large B-cell lymphoma and its uncommon presentation. The patient met criteria for central nervous system prophylaxis and received multiple administrations throughout his therapy. He ultimately expired following recurrence of his disease at its initial site but without central nervous system involvement. We report an uncommon presentation of a patient with diffuse large B-cell lymphoma. This lymphoma can have numerous, vague presentations requiring a broad differential diagnosis and may lead to multiple evaluations prior to an ultimate diagnosis. We will also discuss the need for central nervous system prophylaxis, how this patient is qualified for prophylaxis, and how central nervous system prophylaxis benefits, harms, or does not affect patients with diffuse large B-cell lymphoma. 展开更多
关键词 FEVER of Unknown Origin EPSTEIN-BARR Virus DIFFUSE Large B-CELL LYMPHOMA Non-Hodgkin’s LYMPHOMA
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