河北汉族人群D7S21位点DNA多态性研究

目的探讨D7S2 1位点在河北汉族人群分布的多态性 ,为DNA指纹数据库的构建及其法医学应用提供基础资料。方法应用MVR PCR方法和聚丙烯酰胺梯度凝胶电泳银染法对 12 4名河北汉族人群无关个体D7S2 1位点进行了快速检测 ,并进行数字编码。结果每一个体平均得到 3 6个数字编码 ,未发现任何两个无关个体所有编码相同 ,两无关个体 3 6个编码相同的机率为 3 .4 8× 10 -18。三种重复单位a 型、t 型和o 型出现的机率分别为 4 8.5 %、4 9.5 %和 2 .1%。该位点杂合度为 0 .9876,非父排除率为 0 .974 6,多态性信息含量为 0 .9872。结论D7S2 1位点在河北汉族人群中具有高度的多态性 ,聚丙烯酰胺梯度凝胶电泳银染法简便、快速 ,具有一定的实用价值     

The effects of vitamin B12, vitamin D,ferritin level,neutrophil/monocyte ratio and some blood parameters on genital warts presence,the number of lesions,and recurrence rates

The relationships between cancer caused by HPV and some vitamins, as well as leucocytes and their ratios, have been investigated in the literature. Our aim is to evaluate these relationships at the level of genital wart in terms of the investigated parameters and lesion numbers. Data were obtained from 98 and 94 patients for groups one and two, including warts patients and healthy people respectively. The Neutrophil/Monocyte ratio and lesion numbers in the warts patients were reported and analysed in terms of vitamin B12 and D, ferritin and leucocytes. A correlation was established between lesion numbers, age and midcorpuscular volume (p <0.05). There was no correlation between lesion numbers and recurrence. According to the comparative analysis, there were differences in terms of ferritin, neutrophil, monocyte, haemoglobin, midcorpuscular volume and neutrophil/monocyte ratio between groups. The cut-off values for neutrophil, monocyte and N/M ratios were 56.45, 4.91 and 7.825 respectively. While our study showed that wart development may be affected by blood ferritin levels and in this situation, midcorpuscular volume, neutrophil, monocyte and N/M ratios may change, a relation was found between lesion numbers and age and mean midcorpsucular volume values only. However, further studies are needed to clarify this issue.     

The effect of a known object in a static image of a burn to improve the burn size estimation

IntroductionCurrently information regarding burn size from referring departments to burn centres varies in accuracy. Inaccurate assessment of burn size can lead to over or under treatment. Photographs of injuries may improve accuracy of assessment. We aimed to assess the accuracy of measuring burn size on a static image by including a standard object in the image.MethodsSimulated burn areas were drawn on different body parts of the model. Using an iPhone® model 5 s with an 8 megapixel camera we took photos of the marked area, and repeated them with the palm, a standard bank card and a penny in the picture. First the Du Bois formula, was used to calculate body surface area. Members of the Burns team were asked to view the photos (n = 30) and estimate the percentage of the simulated burn.ResultsWe found an overall overestimation of burn size. Small areas of the forearm were better estimated and within 1.1% of the calculated surface area, however we found no improvement when using a standard object in these images. The back areas were most overestimated ranging from 0.9%–8.9% despite all being the same sized area.ConclusionsStatic images tend to overestimate burn size despite the use of a standard object in the image.     

Methods to address metal artifacts in post-processed CT images – A do-it-yourself guide for orthopedic surgeons

Computed tomography (CT) scans are often used for postoperative imaging in orthopedics. In the presence of metallic hardware, artifacts are generated, which can hamper visualization of the CT images, and also render the study ineffective for 3-D printing. Various solutions are available to minimize metal artifacts, and radiologists can employ these before or after processing the CT study. However, the orthopedic surgeon may be faced with situations where the metal artifacts were not addressed. To counter such problems, we present three do-it-yourself (DIY) techniques that can be used to manage metal artifacts.     

脊柱肿瘤切除术后 3D 打印假体重建的近期疗效

目的总结在脊柱肿瘤切除术后采用 3D 打印假体重建的近期疗效。方法2019 年 6 月—2020 年6 月，对 5 例脊柱肿瘤患者行肿瘤彻底切除后，采用 3D 打印假体植入辅助内固定重建脊柱稳定性。男 4 例，女 1 例；年龄 27～71 岁，平均 50.4 岁。病程 3～24 个月，平均 9.5 个月。原发肿瘤 3 例，转移瘤 2 例。肿瘤侵犯 C₅ 1 例、T₆ 2 例、T₁₂ 1 例、L₂ 1 例。术前 Frankel 分级均为 E 级，疼痛视觉模拟评分（VAS）为（5.0±2.0）分，Karnofsky 功能状态评分为（64.0±15.2）分。术后给予对应放化疗、激素等辅助治疗。 结果手术时间为 180～525 min，平均 348 min；术中出血量 200～2 800 mL，平均 1 380 mL。切口均Ⅰ期愈合。患者均获随访，随访时间 5～14 个月，平均 10.6 个月。术后除 1 例出现右侧 C₅ 神经根麻痹外，其余患者均无并发症发生。末次随访时，VAS 评分为（0.8±0.8）分，Karnofsky 功能状态评分为（86.0±15.2）分，与术前比较差异均有统计学意义（P<0.05）；神经功能无明显变化；影像学复查示患者均无局部复发，内固定物及假体位置良好，假体与骨界面融合。 结论脊柱肿瘤切除术后采用 3D 打印假体重建脊柱稳定性安全可行，可获得较好近期疗效。