Human papillomavirus is associated with monoclonal gammopathies of unknown significance

When monoclonal gammopathies arise in persons without evidence of plasma cell malignancy or lymphoproliferative disease, the term monoclonal gammopathy of unknown significance (MGUS) can be used. MGUS is believed to be the preneoplastic phase of lymphoproliferative diseases because many of these patients eventually develop malignant disease, mainly multiple myeloma. We have previously identified human papillomavirus (HPV) in a chronic benign plasma cell tumor of the cervix and in the bone marrow of multiple-myeloma patients. In the following study, we expanded upon our initial observation by analyzing 14 patients with MGUS. Bone marrow biopsies of the patients were analyzed for HPV sequences using polymerase chain reaction (PCR) and in situ hybridization. Normal controls included 26 bone marrow specimens, 24 analyzed by PCR and two by in situ hybridization. A significant association was found to exist between HPV and MGUS (p=0.001). Among 14 patients iwth MGUS, HPV sequences have been identified in 10 of the bone marrow biopsies. These results suggest that HPV can reside in the bone marrow of a premalignant lymphoproliferative disease.     

Seed morphology in some European aconites (Aconitum,Ranunculaceae)

The seed coat morphology, investigated in taxa representative of the main European groups ofAconitum, are in good agreement with the current taxonomy of the genus. The seed coat microcharacteristics (warty epidermal cells) are very constant. There is a trend for the reduction of longitudinal wings on the edges concomitant with the development of ridges and transverse wings on the faces. Another morphological progression leads from smooth to rugulose and eventually to transverse wing-bearing seed faces. A working hypothesis suggests an ecological adaptative significance to these changes.     

幽门螺杆菌感染性胃癌组织中cyclinD1、MMP-9的表达及其临床意义

目的:探讨幽门螺杆菌(HP)感染性胃癌组织中细胞周期蛋白D1(cyclinD1)、基质金属蛋白酶-9(MMP-9)的表达及其临床意义。方法:选取2016年12月到2018年6月期间在兰州大学第一医院接受治疗的胃癌患者80例,收集其手术切除的病理组织。采用C-14呼气试验和改良Giemsa染色检测患者HP感染的情况,采用免疫组化法检测胃癌组织中cyclinD1、MMP-9表达情况。分析HP感染、cyclinD1、MMP-9表达与胃癌患者临床病理特征的关系,并分析胃癌患者HP感染与cyclinD1、MMP-9表达的相关性。结果:80例胃癌患者HP感染阳性56例(70.00%),阴性24例(30.00%)。有淋巴结转移、浸润深度为T3+T4的胃癌患者的HP感染阳性率高于无淋巴结转移、浸润深度为T1+T2的胃癌患者(P0.05)。80例胃癌患者cyclinD1阳性表达45例(56.25%),阴性表达35例(43.75%),MMP-9阳性表达65例(81.25%),阴性表达15例(18.75%),TNM临床分期为III+IV期、分化程度为低分化、有淋巴结转移、浸润深度为T3+T4的胃癌患者的cyclinD1、MMP-9阳性表达率明显高于TNM临床分期为I+II期、分化程度为中高分化、无淋巴结转移、浸润深度为T1+T2的胃癌患者(P0.05)。HP感染阳性患者的cyclinD1阳性表达率和MMP-9阳性表达率均明显高于HP感染阴性患者(P0.05)。Pearson相关分析显示,胃癌患者HP感染与cyclinD1、MMP-9表达均呈正相关(P0.05)。结论:胃癌患者的HP感染情况与淋巴结转移、浸润深度有关,cyclinD1和MMP-9的表达与TNM临床分期、分化程度、淋巴结转移、浸润深度有关,且胃癌患者HP感染与cyclinD1、MMP-9表达均呈正相关。     

RhD正定型及不规则抗体筛查的临床意义分析

目的:探究RhD正定型及不规则抗体筛查在预防临床输血不良反应中的应用价值及临床意义。方法:回顾性分析2010年至2011年、2017年至2018年于首都医科大学附属北京同仁医院输血科实施输血治疗的1892例患者,将2010年至2011年未实施Rh D正定型及不规则抗体筛查时输血治疗的901例患者设为对照组,将2017年至2018年实施RhD正定型及不规则抗体筛查后输血治疗的991例患者设为观察组。对比两组输血不良反应发生率,分析不同血液成分、不同性别、不同年龄输血不良反应发生率,并就2017年、2018年受血者RhD正定型及不规则抗体特异性分布进行罗列。结果:(1)2010年输血不良反应发生率为3.49%,2011年为2.40%,2017年为1.33%,2018年为0.74%,对照组不良反应发生率明显高于观察组(P<0.05)。(2)观察组不同血液成分输血的不良反应发生率显著低于对照组(P<0.05)。(3)两组不同年龄和性别输血不良反应发生率对比差异无统计学意义(P>0.05)。(4)观察组共检出20例RhD正定型及不规则抗体阳性患者,其中抗-M型5例,抗-D型3例,抗-E型2例,抗-C型2例,抗-P型2例,抗-LEa型1例,抗-LEb型1例,抗-JKa型1例,抗-N型1例,抗-H型1例,非特异性抗体1例。结论:RhD正定型及不规则抗体筛查能够显著降低输血不良反应发生率,有助于提高配血的准确性,提高输血治疗的安全性。     

狼疮性肾炎患者血清sTM、KIM-1、sCD134水平的表达及临床意义

摘要 目的：研究狼疮性肾炎（LN）患者血清可溶性血栓调节蛋白（sTM）、肾损伤分子-1（KIM-1）及可溶性CD134（sCD134）水平的表达及临床意义。方法：选择2016年12月至2018年12月我院收治的LN患者100例,根据系统性红斑狼疮疾病活动度指数(SLEDAI)将患者分为活动期组(SLEDAI≥10分)56例,非活动期组(SLEDAI<10分)44例。另取同期于我院接受体检的健康志愿者50例记为对照组。比较各组受试者的各项肾功能指标、血清sTM、KIM-1及sCD134水平,分析血清sTM、KIM-1及sCD134水平与肾功能指标的相关性。应用受试者工作特征（ROC）曲线分析血清sTM、KIM-1及sCD134水平在LN诊断中的能效。结果：活动期组血尿素氮（BUN）、血肌酐（Scr）以及红细胞沉降率（ESR）水平均高于非活动期组、对照组,且非活动期组BUN、Scr以及ESR水平均高于对照组（P＜0.05）。活动期组血清sTM、KIM-1及sCD134水平均高于非活动期组、对照组,且非活动期组血清sTM、KIM-1及sCD134水平均高于对照组（P＜0.05）。经Pearson相关性分析显示,LN患者血清sTM、KIM-1、sCD134水平与患者BUN、Scr、ESR水平呈正相关（P＜0.05）。ROC曲线分析显示,sTM最佳临界值为24.46 ng/mL,曲线下面积为0.823;KIM-1最佳临界值为8.27μg/L,曲线下面积为0.823;sCD134最佳临界值为15.25 ng/mL,曲线下面积为0.823。结论：LN患者血清sTM、KIM-1及sCD134水平与患者疾病活动程度密切相关,对LN具有很好的诊断效能,临床可能通过联合检测血清sTM、KIM-1及sCD134水平,为LN的诊断以及疾病活动程度提供评估参考。     

Two novel hydroquinones from the roots of Arnebia guttata Bge

Two novel hydroquinone derivatives, named guttaquinol A and B (1, 2), together with fifteen known compounds (3–17), were isolated from the roots of Arnebia guttata Bge.. Spectroscopic methods, including NMR, HR-MS, ECD, and data from the literature were used to determine the chemical structures (including the absolute configurations) of the compounds. The chemotaxonomic significance of the isolated compounds was also discussed.     

Proteomics in translational cancer research: biomarker discovery for clinical applications

This special focus issue of Expert Review of Proteomics invites key opinion leaders to report their recent findings and views on the important topic of translating potential proteomic biomarkers to clinically useful, regulator-approved biomarkers: a challenging journey. The issue also highlights the difficulties associated with and the way forward in the discovery of proteomic cancer biomarkers for clinical applications, as well as presenting recent original research in the field.