颅内多发性胶质瘤的CT与MRI特征

目的 分析颅内多发性胶质瘤（MCG）CT与MBI特征,探讨其在诊断与鉴别诊断中的价值。资料与方法 搜集经手术病理证实的MCG15例,其中CT检查4例,MRI检查7例,CT＋MRI检查4例。对其临床及CT、MRI资料进行回顾性分析。结果 15例共检出病灶34个,病灶主要分布于额叶、颞叶、顶叶。CT平扫病灶大多呈低密度或等密度,MR T1WI大多表现为低或等信号（96．1％）,T2WI均表现为高信号（100％）;瘤周多为轻度或中度水肿及占位效应;增强扫描病灶大多表现为明显不均匀或花环样强化。结论 MCG具有一定的CT与MRI特征,具有一定的诊断意义,但其在影像学诊断上仍需与转移瘤、多发性硬化、多发性淋巴瘤鉴别。     

1 H-MRS对低级别和高级别脑胶质瘤鉴别诊断的作用及病理级别相关性的研究

目的 分析脑胶质瘤的氢质子磁共振波谱（proton magnetic resonance spectroscopy,^1H—MRS）表现及其临床意义;探讨脑胶质瘤的^1H—MRS特点与其病理级别相关性。资料与方法 搜集经临床手术、病理证实的脑胶质瘤36例,按照WHO诊断标准分成两组：低级别脑胶质瘤组、高级别脑胶质瘤组。所有患者在术前行^1H—MRS检查。均在MR非增强成像的基础上获得。使用Siemens Sonata 1．5T超导磁共振扫描仪,多体素扫描,点分辨表面线圈法,检测不同区域代谢物变化。结果 脑胶质瘤的^1H—MRS表现：肌酸（Cr）轻度下降,N-乙酰天门冬氨酸（NAA）显著下降。胆碱（Cho）显著增高。低级别、高级别脑胶质瘤的肿瘤组织分别和对侧正常脑组织的NAA／Cr、Cho／Cr、NAA／Cho比值存在非常显著性差异（P〈0．01）;低级别脑胶质瘤和高级别脑胶质瘤的肿瘤组织的NAA／Cr、Cho／Cr、NAA／Cho比值存在显著性差异（P〈0．05）。脑胶质瘤的NAA／Cho、Cho／Cr、NAA／Cr比值与病理级别相关,其中NAA／Cho和Cho／cr比值反映肿瘤级别较稳定;NAA／Cr、NAA／Cho比值存在负相关关系（相关系数rs分别为-0．663,-0．851）,Cho／Cr比值存在正相关关系（相关系数rs为0．858）。结论 ^1H—MRS与MRI相结合能提高脑胶质瘤术前诊断的准确性。^1H-MRS可评价脑胶质瘤的分级,反映脑胶质瘤代谢特性以及肿瘤生长潜能。     

DOK3 PTK7在不同级别结肠腺瘤组织中的表达及意义探讨

目的分析对接蛋白3(DOK3)和蛋白酪氨酸激酶7(PTK7)在不同级别结肠腺瘤组织中的表达情况,探讨其在结肠癌的发生、发展机制中的作用。方法收集2015-01~2018-12广西壮族自治区南溪山医院经病理科确诊的结肠腺瘤伴低级别异型增生(LGD)标本22例,结肠腺瘤伴高级别异型增生(HGD)标本23例,结肠癌标本22例,瘤旁非肿瘤黏膜组织标本20例。采用免疫组织化学染色法检测不同类型标本DOK3和PTK7的表达情况。结果DOK3和PTK7均主要表达于腺上皮的胞浆和胞膜。瘤旁非肿瘤黏膜和LGD组织的DOK3高表达率均显著高于HGD和结肠癌组织(P<0.05);HGD组织的DOK3高表达率也显著高于结肠癌组织(P<0.05)。结肠癌和HGD组织的PTK7高表达率均显著高于瘤旁非肿瘤黏膜和LGD组织(P<0.05);结肠癌组织的PTK7高表达率也显著高于HGD组织(P<0.05)。结论DOK3可能是作为抑癌因子,而PTK7作为促癌因子参与结肠癌的发生、发展。     

脑胶质瘤组织中R132H突变型hIDH1基因双顺反子真核表达载体的构建及鉴定

目的以pcDNA3.1(+)为骨架,构建并鉴定人脑胶质瘤组织中含R132H突变的人源异柠檬酸脱氢酶1基因(hIDH1R132H)和增强型绿色荧光蛋白(EGFP)序列的双顺反子真核表达载体。方法以内部核糖体进入位点(IRES)/EGFP片段为模板,扩增出IRES/EGFP片段,并在5’末端引入3×Flag标签;通过PCR介导的定点突变法,以pCMV-sports6-hIDH1为模板,扩增hIDH1R132H基因片段,并在3’末端引入3×Flag标签;通过PCR连接两种产物后经双酶切定向克隆入pcDNA3.1(+)骨架;转化大肠杆菌后挑取阳性克隆,提取质粒进行PCR检测及基因序列测定。结果 PCR检测7个菌落中有6个阳性克隆,DNA测序发现引入了hIDH1基因。结论成功构建了双顺反子真核表达载体pcDNA3.1(+)-hIDH1R132H/3×Flag/IRES/EGFP,为研究人胶质瘤组织中R132H突变的作用机制奠定了基础。     

Mean ± Standard Deviation Intake Values for 1–<10-Year-Old South African Children for Application in the Assessment of the Inflammatory Potential of Their Diets Using the DII® Method: Developmental Research

This study aimed to develop a set of mean ± standard deviation (SD) intake values for South African (SA) children for 36 of the 45 food parameters included in the original Dietary Inflammatory Index (DII^®) tool. The SA food composition database contains 30 of the 45 food parameters included in the original DII^®, and a supplementary database was developed for six of the food parameters not included in the SA database. The SA child mean ± SD intake of macronutrients, micronutrients and select flavonoids was calculated by age in years, using eight data sets from dietary surveys conducted in SA in the last three decades. A total sample of 5412 children was included in the calculation of the mean ± SD. The current study sample was determined to be representative of 1–<10-year-old children in SA, and the plausibility of the mean intake values was confirmed by being in line with age-appropriate recommendations. Furthermore, an increase in energy, macronutrient, and most micronutrient intakes with increase in age was evident. The generated mean ± SD values for SA children can be used for calculation of the inflammatory potential of the dietary intake of SA children in the age range of 1–<10-year-old children.     

外泌体来源的miR-181a促进胶质瘤的血管生成

目的:探讨外泌体来源的miR-181a对胶质瘤血管生成和肿瘤进展的影响.方法:选用2017年8月至2019年12月海南医学院第二附属医院手术切除的83例胶质瘤和13例瘤旁组织标本,以及胶质瘤细胞U87、A172、U251、LN229、U373和小神经胶质细胞HM,用qPCR法检测瘤组织和细胞中miR-181a的表达水平...     

IL-17A,IL-17E and IL-17F as Potential Biomarkers for the Intensity of Low-Grade Inflammation and the Risk of Cardiovascular Diseases in Obese People

Low-grade inflammation is a factor that predisposes to many obesity-related comorbidities. The immune mechanisms controlling the inflammatory response related to the secretory activity of adipocytes and its consequences for the organism are still under investigation. Methods: 84 obese adult volunteers (BMI ≥ 30 kg/m²) were tested by BIA. Serum samples were collected to analyze the concentrations of interleukins IL-17A, IL-17E and IL-17F. The subjects completed the original questionnaire, the FFQ-6 food consumption frequency questionnaire and the food diary. Results: The level of IL-17E and IL-17F was positively correlated with the BMI value and the level of IL-17E increased with the content of subcutaneous fat. Its increased blood concentration was also observed in individuals who declared that they were diagnosed with atherosclerosis and/or were taking beta-blockers. Products that were related with a low level of the above-mentioned interleukins were vegetables, groats, eggs, red meat, fast-food and alcohol. The level of these interleukins was positively correlated with the frequent consumption of confectionery and breakfast cereals. Nutrients that decreased the concentrations of IL-17 isoforms were potassium, iron, vitamins B6 and C, and folic acid. Conclusions: Both IL-17E and IL-17F may be closely related to the intensity of low-grade inflammation and be biomarkers of cardiovascular disease risk. Food products or the nutrients they contain may affect the levels of the above-mentioned interleukins as well as IL-17A.     

p16、Ki67及FRα预测低度宫颈上皮内瘤变转归的研究进展

宫颈上皮内瘤变(cervical intraepithelial neoplasia,CIN)已发现与宫颈癌密切相关,根据异常程度分3级CIN(CIN1,CIN2和CIN3)。约60%的CIN1可自然消退,仅有少部分发生进展。目前,迫切需要一些生物标志物作为预测因子来预测病变的转归。经检索国内外文献发现,目前大部分研究结果发现生物标志物p16、Ki67的染色结果对于CIN1的预后有预测意义,并且有部分学者研究了p16/Ki67双染结果也可以很好的预测,而目前仅少数人研究了FRα在预测CIN1转归时的意义,认为FRα可能有一定预测价值。关于这些生物标志物的预测价值,还需要其他大型的、长时间的临床随访来进一步研究它们的准确性和可靠性,也需要进行更加深入的研究去发现其他更为精准的标志物。     

Ossifying Fibroma of Non-odontogenic Origin: A Fibro-osseous Lesion in the Craniofacial Skeleton to be (Re-)considered

In the cranio-facial skeleton, a heterogeneous group of well characterized fibro-osseous lesions can be distinguished. Whereas fibrous dysplasia can affect any skeletal bone, ossifying fibroma and cemento-osseous dysplasia exclusively develop in the cranio-facial region, with most subtypes restricted to the tooth bearing areas of the jaws. Herein we present a series of 20 fibro-osseous lesions that developed mostly in the frontal bone and in the mandible, presenting as expansile intramedullary tumors with a unique histologic appearance and an indolent clinical course. We provide evidence that these tumors are distinct from the categories included in the WHO classification and are therefore currently unclassifiable. The definition of cemento-ossifying fibroma as an odontogenic neoplasm developing only in close proximity to teeth should be re-considered and incorporate also extragnathic lesions as shown here.Supplementary InformationThe online version contains supplementary material available at 10.1007/s12105-021-01351-3.     

血清NSE和CA153联合检测对胶质瘤的诊断意义

目的：研究血清NSE、CA153联合检测在胶质瘤中的诊断中的意义。方法：对45例胶质瘤患者及22例脑良性肿瘤患者血清NSE、CA153进行检测。结果：胶质瘤组中NSE、CA153阳性率分别为62.22%、73.33%,与脑良性肿瘤组比较均有显著差异（P〈0.05）,NSE、CA153在不同恶性程度胶质瘤中阳性率有显著性差异（P〈0.05）。NSE＋CA153联合检测在诊断脑胶质瘤中的特异性及敏感性均较单项检测高。结论：NSE、CA153联合检测对胶质瘤的早期诊断、高危人群的肿瘤筛查、病理分期及临床确诊有重要意义。