宫颈癌筛查采用Cervista与HC2法比较的研究进展

宫颈癌在女性生殖系统恶性肿瘤中发病率最高,且近年来其发病率和死亡率有明显增长趋势,尤其是在中青年女性中.全世界浸润性宫颈癌的HPV检出率99.3％,而部分HPV感染可以随着免疫力的增强逐渐被机体所清除;且早期病变演变为宫颈癌其潜伏期长达10年左右;再者,局部治疗即可阻止其进一步发生恶变,所以,通过筛查不但可早期发现宫颈的癌前病变,而且可早治疗、提高疗效、挽救生命.最新的Cervista酶切免疫放大技术特异性更高、假阳性更少,检测效率高、不确定率更低,本文通过与HC2对比,对该方法予以综述.     

A Novel Flavi-like Virus in Alfalfa (Medicago sativa L.) Crops along the Snake River Valley

Alfalfa is an important perennial forage crop in Idaho supporting dairy and cattle industries that is typically grown in the same field for as many as 4 years. Alfalfa stands of different ages were subjected to screening for viruses using high-throughput sequencing and RT-PCR. The two most common viruses found were alfalfa mosaic virus and bean leafroll virus, along with Medicago sativa amalgavirus, two alphapartitiviruses, and one deltapartitivirus. Additionally, a new flavi-like virus with an unusual genome organization was discovered, dubbed Snake River alfalfa virus (SRAV). The 11,745 nt, positive-sense (+) RNA genome of SRAV encodes a single 3835 aa polyprotein with only two identifiable conserved domains, an RNA-dependent RNA polymerase (RdRP) and a predicted serine protease. Notably, unlike all +RNA virus genomes in the similar size range, the SRAV polyprotein contained no predicted helicase domain. In the RdRP phylogeny, SRAV was placed inside the flavi-like lineage as a sister clade to a branch consisting of hepaci-, and pegiviruses. To the best of our knowledge, SRAV is the first flavi-like virus identified in a plant host. Although commonly detected in alfalfa crops in southern Idaho, SRAV sequences were also amplified from thrips feeding in alfalfa stands in the area, suggesting a possible role of Frankliniella occidentalis in virus transmission.     

心肺联合超声检测COVID-19心血管系统损伤

基础和临床研究已经证实,新型冠状病毒肺炎(COVID-19)不仅会造成患者呼吸系统的严重病变,同时也对心血管系统产生不同程度的损伤.这些损伤通常同时具有炎症和非炎症损伤的特点,部分患者临床表现与疾病严重程度并不平行,病情变化急剧.充分采用简便、可靠的心肺联合超声检测技术方法,既有助于COVID-19患者的分型、分类管理...     

眼睑皮肤恶性黑色素瘤早期检测进展

眼睑皮肤恶黑瘤发病率低,预后差,在临床及病理上很难与其他肿瘤鉴别.本文回顾了国内外眼睑皮肤恶黑瘤相关基因、肿瘤标志物的文献,发现B-RAF、hTERT、NOS及melan-A均与眼睑皮肤恶性黑色素瘤发生、发展,早期检测相关,有利其鉴别诊断.     

混合变应原检测的临床评价

目的：探讨混合变应原检测对变态反应病诊断的价值。方法：应用e-Star变应原检测仪,通过RASTFEIA（荧光酶标法）进行混合变应原检测。结果：432例患者进行混合变应原检测,阳性177例,阳性率40．9％。混合吸入变应原阳性率明显高于混合食物变应原（P〈0．005）。混合螨类变应原阳性率明显高于混合吸入变应原（P〈0．005）。混合鱼虾变应原阳性率明显高于混合食物变应原（P〈O．005）。混合食物变应原和混合水果变应原阳性率无明显差异（P〉O．05）,混合鱼虾变应原和混合水果变应原阳性率亦无明显差异（P〉0．05）。结论：混合变应原检测对变态反应病具有重要的辅助诊断价值。     

Detecting spontaneous deception in the brain

Deception detection can be of great value during the juristic investigation. Although the neural signatures of deception have been widely documented, most prior studies were biased by difficulty levels. That is, deceptive behavior typically required more effort, making deception detection possibly effort detection. Furthermore, no study has examined the generalizability across instructed and spontaneous responses and across participants. To explore these issues, we used a dual‐task paradigm, where the difficulty level was balanced between truth‐telling and lying, and the instructed and spontaneous truth‐telling and lying were collected independently. Using Multivoxel pattern analysis, we were able to decode truth‐telling versus lying with a balanced difficulty level. Results showed that the angular gyrus (AG), inferior frontal gyrus (IFG), and postcentral gyrus could differentiate lying from truth‐telling. Critically, linear classifiers trained to distinguish instructed truthful and deceptive responses could correctly differentiate spontaneous truthful and deceptive responses in AG and IFG with above‐chance accuracy. In addition, with a leave‐one‐participant‐out analysis, multivoxel neural patterns from AG could classify if the left‐out participant was lying or not in a trial. These results indicate the commonality of neural responses subserved instructed and spontaneous deceptive behavior as well as the feasibility of cross‐participant deception validation.     

新型冠状病毒IgG和IgM抗体检测的诊断价值探索

目的:通过对血清中新型冠状病毒1gM和IgG抗体的定性检测,探索新型冠状病毒1gM/gG抗体检测试剂盒(胶体金法)的临床诊断价值.方法:本研究以2020年1月3日至2020年3月19日于十堰市西苑医院收治的新型冠状病毒肺炎感染确诊患者141例和141名健康体检者为研究对象,采用胶体金免疫层析技术对患者血清中的新型冠状病...     

Study on Remote Field Eddy Current Testing Technology for Crack-like Defects in Long Truss Structure of Aircraft

Detection of hidden defects of aircraft long truss structures (aluminum alloy) is a challenging problem. The shape of the aircraft truss structure is complex, and the crack defects are buried in a large depth. Without the restriction of skin effect, remote field eddy current (RFEC) has great advantages in detecting buried depth defects. In this paper, in order to detect the hidden defects of the aluminum alloy aircraft long truss structure, the remote field eddy current probe is improved from two aspects of magnetic field enhancement and near-field signal suppression using the finite element method. The results show that indirect coupling energy is greatly enhanced when the connected magnetic circuit is added to the excitation coil. By adding a composite shielding structure outside the excitation coil and the detection coil, respectively, the direct coupling energy is effectively restrained. As a result, the size of the probe is reduced. By optimizing the coil spacing and probe placement position, the detection sensitivity of the probe is improved. The simulation is verified by experiments, and the experimental results are consistent with the simulation conclusions.     

Comparison between Piezoelectric and Piezoresistive Wearable Gait Monitoring Techniques

Insole plantar stress detection (PSD) techniques play an important role in gait monitoring. Among the various insole PSD methods, piezoelectric- and piezoresistive-based architectures are broadly used in medical scenes. Each year, a growing number of new research outcomes are reported. Hence, a deep understanding of these two kinds of insole PSD sensors and state-of-the-art work would strongly benefit the researchers in this highly interdisciplinary field. In this context, this review article is composed of the following aspects. First, the mechanisms of the two techniques and corresponding comparisons are explained and discussed. Second, advanced materials which could enhance the performance of current piezoelectric and piezoresistive insole prototypes are introduced. Third, suggestions for designing insole PSD prototypes/products for different diseases are offered. Last, the current challenge and potential future trends are provided.     

呼出气冷凝液检测在呼吸系统疾病中的研究进展*

呼出气冷凝液(exhaled breath condensate, EBC)的检测具有安全无创、简单易操作、便捷可重复等优点,是一种前景广大的检测呼吸道内衬液成分的新型技术。近年来EBC研究取得了许多新的发展,积累了丰富的经验,尤其在呼吸系统疾病中的应用明显增多。本文主要就EBC检测方法及其在呼吸系统疾病应用中的最新研究进展进行总结。