novel method

新方法
  • 文章类型: Journal Article
    介绍下第三磨牙嵌塞手术是最常见的小型口腔外科手术之一。对于患者来说,剑术是最常见和最令人不安的术后后遗症之一。该研究旨在评估下颌第三磨牙手术后咬肌和颞肌的电活动。材料和方法该研究在Saveetha牙科学院和口腔颌面外科的医院进行。该研究由20个人组成。在拔牙手术之前测量每位患者的两个咬肌的EMG(肌电图)活动,术后72小时,七天后。还以相似的随访间隔测量了切面间距离。使用IBM公司分析数据2015年发布IBMSPSSStatisticsforWindows,版本23.0。Armonk,纽约:IBM公司,p值小于0.05被认为具有统计学意义。Mann-WhitneyU检验用于术前手术和非手术侧咬肌和颞肌之间的电活动比较,术后,72小时,和术后七天。结果发现,在随访期间的所有间隔内测得的颞肌的电活动均高于咬肌的电活动,具有统计学显著值(p=0.001)。值得注意的是,与术前相比,所有患者的张口都减少了(平均张口=45.6mm),术后72小时(平均张口=31.2mm),和术后7天(平均张口=35.6mm)。当在颞肌和咬肌之间进行比较时,咬肌需要更长的时间才能恢复到术前的电活动,这也可能意味着,对于下第三磨牙手术后的患者,受影响的是咬肌,需要恢复才能解决刺耳。结论根据获得的结果,可以得出结论,在第三磨牙嵌塞手术后,咬肌和颞肌的电活动均减少。还发现,接受下第三磨牙拔除手术的患者的张口减少。咬肌比颞肌需要更长的时间来恢复其术前电活动,这意味着,在接受下第三磨牙嵌塞手术的患者中,加速咬肌愈合的靶向治疗可能会防止长期的三联肌。
    Introduction Lower third molar impaction surgery is one of the most common minor oral surgical procedures done. Trismus has been one of the most common and disturbing postoperative sequelae for patients. The study aimed to evaluate the electrical activity of the masseter and temporalis muscles after mandibular third molar surgery. Materials and methods The research was conducted at Saveetha Dental College and hospitals in the Department of Oral and Maxillofacial Surgery. The study consisted of 20 individuals. The EMG (electromyography) activities of both masseter muscles in each patient were measured before the tooth extraction surgery, postoperatively after 72 hours, and after seven days. The inter-incisal distance was also measured at similar follow-up intervals. Data were analyzed using IBM Corp. Released 2015. IBM SPSS Statistics for Windows, Version 23.0. Armonk, NY: IBM Corp., with p-values less than 0.05 considered statistically significant. The Mann-Whitney U test was used for the comparison of electrical activity between masseter and temporalis on both the operated and non-operated sides during preoperative, postoperative, 72-hour, and postoperative seven-day periods. Results It has been found that the electrical activity of the temporalis is higher than that of the masseter muscle measured at all the intervals of the follow-up period, with statistically significant values (p=0.001). It was noted that all the patients have reduced mouth opening when compared with preoperative (mean mouth opening = 45.6 mm), postoperative 72 hours (mean mouth opening = 31.2 mm), and postoperative seven days (mean mouth opening =35.6 mm). When a comparison was done between temporalis and masseter, the masseter took longer to return to pre-operative electrical activity, which might also imply that for prolonged trismus seen in patients after lower third molar surgery, it is the masseter that is affected and needs recovery for trismus to be resolved.  Conclusion  Based on the results obtained, it can be concluded that there was a reduction in the electrical activity of both the masseter and temporalis post-third molar impaction surgery. It was also found that there was a reduction in mouth opening in patients who underwent lower third molar extraction surgery. Masseter muscle took longer to return to its preoperative electrical activity than temporalis muscle, implying that targeted therapies to accelerate the healing of masseter muscle may prevent prolonged trismus in patients who undergo lower third molar impaction surgery.
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  • 文章类型: Journal Article
    基因组选择(GS)由于其加速遗传进展和提高育种计划效率的潜力而获得了全球重要性。
    在这项研究中,我们提出了一种在新的(未经测试的)环境中提高测试线的预测精度的方法。
    新方法使用修改的响应变量(响应变量的差异)训练模型,减少了训练和测试之间的非平稳分布的缺乏,并提高了预测精度。
    我们比较了包括(或不包括)基因型×环境相互作用(GE)(M1_GE;M1_NO_GE)的常规基因组最佳线性无偏预测(GBLUP)模型(M1)与提出的方法(M2)在几个数据集上的预测准确性。
    M2相对于M1_GE的预测精度提高,就皮尔逊相关性而言,M1_NO_GE至少为4.3%,而就选择时捕获的最高产量品系的百分比而言,品系的10%(Best10)和20%(Best20)至少为19.5%,而归一化均方根误差(NRMSE)至少为42.29%。
    Genomic selection (GS) has gained global importance due to its potential to accelerate genetic progress and improve the efficiency of breeding programs.
    In this research we proposed a method to improve the prediction accuracy of tested lines in new (untested) environments.
    The new method trained the model with a modified response variable (a difference of response variables) that decreases the lack of a non-stationary distribution between the training and testing and improved the prediction accuracy.
    We compared the prediction accuracy of the conventional genomic best linear unbiased prediction (GBLUP) model (M1) including (or not) genotype × environment interaction (GE) (M1_GE; M1_NO_GE) versus the proposed method (M2) on several data sets.
    The gain in prediction accuracy of M2, versus M1_GE, M1_NO_GE in terms of Pearson´s correlation was of at least 4.3%, while in terms of percentage of top-yielding lines captured when was selected the 10% (Best10) and 20% (Best20) of lines was at least of 19.5%, while in terms of Normalized Root Mean Squared Error (NRMSE) was of at least of 42.29%.
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  • 文章类型: Journal Article
    组织微阵列(TMAs),也称为组织芯片,包含从不同的组织供体块获得的数百到数千个组织核。通过使用TMA技术,分子标记,如蛋白质,RNA或DNA,可以在相同的实验条件下同时检查数百个不同的标本。越来越多的先前研究引入了构建TMA的不同方法。许多作者尝试使用各种方法在单个受体块中植入更多的组织核,并且这些方法中的大多数涉及减小组织芯的直径和/或相邻组织芯之间的间距。然而,创建TMA时,除了极其昂贵的自动TMA阵列之外,很难将组织芯之间的距离减小到零。这里,我们介绍了一种新的方法来构建组织核之间没有间距的高密度TMA.我们还介绍了一种自制组织阵列仪的制备方法。用这种方法和组织排列仪器,我们成功创建了包含126个直径为2mm的组织核的TMA.对从TMA上切下的切片进行H&E染色和免疫组织化学染色,没有任何组织斑点损失。这种方法操作简单,制造组织排列仪器的材料便宜,可以在任何地方购买。因此,这种方法可以应用于所有实验室。
    Tissue microarrays (TMAs), also called tissue chips, contain hundreds to thousands of tissue cores obtained from different tissue donor blocks. By using TMA technology, a molecular marker, such as protein, RNA or DNA, can be simultaneously examined in hundreds of different specimens under the same experimental conditions. A growing number of previous studies have introduced different methods for constructing TMAs. Many authors tried to use various methods to implant more tissue cores in a single recipient block, and most of these methods involved reducing the diameter of the tissue cores and/or the spacing between adjacent tissue cores. However, when creating TMAs, it is difficult to reduce the distance between tissue cores to zero except with extremely expensive automatic TMA arrayers. Here, we introduce a novel method to construct a high-density TMA that does not have spacing between the tissue cores. We also introduce a method for preparing a self-made tissue-arraying instrument. With this method and the tissue-arraying instrument, we successfully created a TMA containing 126 tissue cores that were 2 mm in diameter. H&E staining and immunohistochemical staining were performed on the sections cut from the TMA without any tissue spot loss. This method is easy to operate, and the materials for creating the tissue-arraying instrument are inexpensive and can be purchased anywhere. Therefore, this method can be applied in all laboratories.
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  • 文章类型: Journal Article
    目的:组织病理学是诊断肺外结核的重要方法,然而,在使用耐酸染色剂(AFS)后,组织切片通常对分枝杆菌呈阴性。这项研究调查了AFS使用的机制和组织学处理的有害影响-特别是,二甲苯脱蜡-在AFS和分枝杆菌检测上。
    方法:使用DNA和RNA特异性染料的三重染色研究了荧光金胺O(AuO)AFS的靶标。使用AuO荧光作为定量标记研究了二甲苯脱蜡对培养物或组织切片中分枝杆菌耐酸性的影响。对二甲苯法进行了比较,无溶剂投射热空气脱蜡(PHAD)。
    结果:AuO与DNA/RNA染色的共定位表明细胞内核酸是AFS的真正靶标,产生高度特定的图案。二甲苯显著降低分枝杆菌荧光(P<0.0001;中等效应大小,r=0.33)。PHAD过程在组织中产生的荧光明显高于二甲苯脱蜡(P<0.0001;大效应大小,r=0.85)。
    结论:金胺O可用于产生典型珠状图案的组织中分枝杆菌的核酸染色。耐酸染色在很大程度上取决于分枝杆菌细胞壁的完整性,二甲苯似乎会损坏。无溶剂组织脱蜡方法具有显着提高分枝杆菌检测的潜力。
    Histopathology is an important method for diagnosing extrapulmonary tuberculosis, yet tissue sections are often negative for mycobacteria after use of acid-fast stain (AFS). This study investigated the mechanism of AFS use and the detrimental effect of histologic processing-in particular, xylene deparaffinization-on AFS and mycobacterial detection.
    The target of the fluorescent Auramine O (AuO) AFS was investigated using triple staining with DNA- and RNA-specific dyes. The effect of xylene deparaffinization on the acid fastness of mycobacteria in cultures or tissue sections was studied using AuO fluorescence as a quantitative marker. The xylene method was compared with a novel, solvent-free projected-hot-air deparaffinization (PHAD).
    Co-localization of AuO with DNA/RNA stains suggests that intracellular nucleic acids are the true target of AFS, producing highly specific patterns. Xylene reduces mycobacterial fluorescence significantly (P < .0001; moderate effect size, r = 0.33). The PHAD process yielded significantly higher fluorescence than xylene deparaffinization in tissues (P < .0001; large effect size, r = 0.85).
    Auramine O can be applied for nucleic acid staining of mycobacteria in tissues producing typical beaded patterns. Acid-fast staining depends heavily on the integrity of the mycobacterial cell wall, which xylene appears to damage. A solvent-free tissue deparaffinization method has the potential to increase mycobacterial detection significantly.
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  • 文章类型: Journal Article
    UNASSIGNED: Recently, in many Asian centers, laparoscopic anatomical liver resection (LALR) using the indocyanine green (ICG) fluorescence imaging technique has been increasingly applied in resecting hepatocellular carcinoma, even in colorectal liver metastases. However, LALR techniques have not been fully standardized, especially in right superior segments. Due to the anatomical position, prevailing positive staining using a PTCD (percutaneous transhepatic cholangial drainage) needle was superior to negative staining in right superior segments hepatectomy, while it was difficult to manipulate. Herein, we design a novel method of ICG-positive staining for LALR of right superior segments.
    UNASSIGNED: Between April 2021 and October 2022, we retrospectively studied patients in our institute who underwent LALR of right superior segments using a novel method of ICG-positive staining, which comprised a customized puncture needle and an adaptor. Compared to the PTCD needle, the customized needle was not limited by the abdominal wall and could be punctured from the liver dorsal surface, which was more flexible to manipulate. The adapter was attached to the guide hole of the laparoscopic ultrasound (LUS) probe to ensure the precise puncture path of the needle. Guided by preoperative three-dimensional (3D) simulation and intraoperative laparoscopic ultrasound imaging, we punctured the transhepatic needle into the target portal vein through the adaptor and then slowly injected 5-10 ml of 0.025 mg/ml ICG solution into the vessel. LALR can be guided by the demarcation line under fluorescence imaging after injection. Demographic, procedural and postoperative data were collected and analyzed.
    UNASSIGNED: In this study, 21 patients underwent LALR of the right superior segments with ICG fluorescence-positive staining, and the procedures had a success rate of 71.4%. The average staining time was 13.0 ± 6.4 min, the operative time was 230.4 ± 71.7 min, R0 resection was 100%, the postoperative hospital stay was 7.1 ± 2.4 days, and no severe puncture complications occurred.
    UNASSIGNED: The novel customized puncture needle approach seems to be feasible and safe for ICG-positive staining in LALR of right superior segments, with a high success rate and a short staining time.
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  • 文章类型: Journal Article
    慢性支气管炎(CB)是一种炎症性疾病,其特征是支气管刺激。支气管刺激可导致粘液积聚。CB是慢性阻塞性肺疾病的一部分,导致气流阻塞,从而导致呼吸问题。吸烟对引起CB至关重要。除了空气污染和工作环境也可以发挥关键作用。该研究旨在评估和提高牙科学生和从业人员对CB的认识。使用名为“Google表格”的在线评论条目对牙科学生进行了横断面问卷调查。“共有100人使用包含15个问题的结构化问卷进行了评估。使用23版SPSS软件对结果进行分析。已经表明,78%的人知道CB。其中75%的人回答说被动吸烟者主要受到CB的影响。在研究范围内,研究发现,与女性相比,参与的男性意识有所提高。调查结果显示,大多数参与者了解CB,但不了解其临床特征,口腔表现,诊断,和治疗。
    Chronic bronchitis (CB) is an inflammatory disease and is characterized by bronchial tube irritation. The bronchial tube irritation can result in the accumulation of mucus. CB is a part of chronic obstructive pulmonary disease, causing blockage of airflow and thereby problems in breathing. Cigarette smoking is of utmost importance in causing CB. Besides pollution of air and the working environment can also play a key role. The study aimed to assess and create the awareness about CB among dental students and practitioners. A cross-sectional questionnaire survey was conducted among dental students utilizing an online review entry called \"Google forms.\" A total of 100 people were assessed using a structured questionnaire comprising 15 questions. The analysis of the result was done using the SPSS software of version 23. It has been shown that 78% of them are aware of CB. 75% of them responded that passive smokers were mostly affected by CB. Within the study limits, it was found that males who participated had increased awareness when compared to the females. The survey results showed that most of the participants were aware about CB but not its clinical features, oral manifestations, diagnosis, and treatment.
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  • 文章类型: Journal Article
    Siddha医学中使用的传统植物之一是KabasuraKudineerChooranam。据说它具有抗衰老作用,强化生命,以及对医疗保健有巨大影响的疾病预防活动。它具有显著的治疗潜力和民族植物学意义。这项研究的目的是研究KabasuraKudineerChooranam的抗糖尿病活性。使用已建立的方法,例如α-淀粉酶和α-葡糖苷酶活性,在体外确定了KabasuraKudineerChooranam的抗糖尿病潜力。我们使用单因素方差分析来观察组间的统计学差异。显著性阈值被认为是在P<0.05水平。与健康组相比,提取物显示出显著的抗糖尿病作用。抑制的比例随着浓度的增加而增加。以前的研究建立了抗病毒,抗炎,镇痛药,抗真菌药,抗氧化剂,抗菌,保肝,平喘,免疫调节,和KabasuraKudineer或Choornam的解热作用。当前的发现表明,Chooranam在显着浓度下具有良好的抗糖尿病作用。基于植物的产品最近被证明是有效和经济的抗糖尿病物品。
    One of the traditional plants used in Siddha medicine is Kabasura Kudineer Chooranam. It is said to possess antiaging, life-strengthening, and disease-preventing activities that have an enormous influence on health care. It has significant therapeutic potential and ethnobotanical significance. The aim of this study is to investigate the antidiabetic activity of Kabasura Kudineer Chooranam. The antidiabetic potential of Kabasura Kudineer Chooranam was determined in vitro using established methods such as alpha-amylase and alpha-glucosidase activity. We used one-way ANOVA to see the statistical difference among the groups. The significance thresholds were considered at the P < 0.05 level. In comparison with the healthy group, the extract showed a significant antidiabetic effect. The proportion of inhibition increased as the concentrations increased. Previous studies established the antiviral, anti-inflammatory, analgesic, antifungal, antioxidant, antibacterial, hepatoprotective, antiasthmatic, immunomodulatory, and antipyretic effects of Kabasura Kudineer or Choornam. The current findings demonstrated that the Chooranam has good antidiabetic action at a significant concentration. Plant-based products have recently proven to be effective and economical antidiabetic items.
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  • 文章类型: Journal Article
    与光滑表面相比,后牙咬合表面的孔裂密封剂由于其复杂的形态而很容易发生龋齿,这使得牙齿卫生成为一个具有挑战性的事实,导致牙菌斑积累增加。使用凹坑和裂缝密封剂是为了抑制微生物和食物颗粒的聚集,从而抑制龋齿的开始和防止龋齿的进展。该研究旨在通过摄影评估涂刷后凹坑和裂缝密封剂的效果。对于这项上镜的原始研究,选择了八颗牙齿,每组有两组,每组有四颗牙齿。刷模拟器机是用于分析牙刷功效的完善的方法。机器总共占10,000个循环,每组线性X轴和Y轴=2500。每组顺时针和逆时针=2500。从研究中,可以得出结论,发现A组比B组更有效,其中A组是Clinpro密封剂,B组是YuSeal。这种凹坑和裂缝密封剂的应用在临床实践中非常重要,可以防止牙齿腐烂。这项研究有助于我们确定涂刷后两组密封剂的减少量,因为各种涂刷方式会影响凹坑和裂缝密封剂的保留。
    Pit-and-fissure sealants of the occlusal surfaces for the posterior teeth are well susceptible to develop dental caries compared to the smooth surfaces due to its complex morphology, which makes dental hygiene a challenging fact which give rise to increased plaque accumulation. The use of pit-and-fissure sealants is to provide inhibition toward microorganisms and aggregation of food particles, thereby inhibiting caries initiating and preventing caries progression. The study aimed to assess the effect of pit-and-fissure sealants postbrushing simulation through photography. For this photogenic original study, eight teeth were selected, with two groups each and four teeth present in each of the groups. Brushing simulator machines are well-established methods for analyzing the efficacy of toothbrushes. A total of 10,000 cycles were accounted for by the machine with linear X-axis and Y-axis = 2500 in each group. The clockwise and counterclockwise = 2500 in each group. From the research, it can be concluded that Group A is found to be more effective than Group B, where Group A is Clinpro sealant and Group B is YuSeal. This pit-and-fissure sealant application is very important in clinical practice to prevent the tooth from getting decayed. This research helps us to establish the amount of reduction in both the groups of sealants postbrushing as various brushing patterns influence the retention of pit-and-fissure sealants.
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  • 文章类型: Journal Article
    谷蛋白的消费引发称为乳糜泻(CD)的自身免疫性疾病。这也被称为非热带浇口,乳糜泻,或麸质敏感型肠病.面筋是小麦中的一种蛋白质,大麦,黑麦,和其他谷物。由于面筋,面团变得有弹性,并为面包提供耐嚼的质地。这项研究的目的是评估牙科学生对CD的认识和知识。这项调查完全基于CD及其在牙科学生中的意识。对下面的100名志愿者进行了调查。这项调查包含CD原因的问卷,症状,治疗,等。,并采用SPSS统计分析。结果表明,CD主要影响38.61%的学生选择的小肠。CD的症状选择为慢性腹泻的占63.37%。该疾病的主要原因是由于9.90%选择的面筋。22.77%的学生选择了一些无麸质食品。在卡方检验中,CD意识与学生之间的关联表明,研究生(PG)学生比本科生(UG)学生更有意识。然而,P>0.05(P=0.088),无统计学意义.相关图说PG比本科生更清楚,UG对这种疾病知之甚少。
    Consumption of gluten triggers an autoimmune disease known as celiac disease (CD). This is also referred to as nontropical sprue, celiac sprue, or gluten-sensitive enteropathy. Gluten is a protein present in wheat, barley, rye, and other grains. It is due to gluten that the dough becomes elastic and provides bread its chewy texture. The aim of this study is to assess the awareness and knowledge of CD among dental students. This survey is totally based on CD and its awareness among dental students. A survey was conducted among 100 students who are volunteers underneath. This survey contained questionnaires of CD causes, symptoms, treatment, etc., and the accrued was analyzed using SPSS statistics. The result shows that CD affects mainly the small intestine being chosen by 38.61% of students. The symptoms of CD as chronic diarrhea are chosen by 63.37%. The main cause of the disease is due to gluten chosen by 9.90%. Some of the gluten-free foods are chosen by 22.77% of students. In the Chi-square test, the association between the awareness of CD and students shows that postgraduate (PG) students are more aware than undergraduate (UG) students. However, this is not statistically significant since P > 0.05 (P = 0.088). The correlation graph says that the PGs are more aware than the undergraduates, and UGs have poor knowledge about this disease.
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  • 文章类型: Journal Article
    当异常的血细胞经历不受控制的生长,超过正常血细胞的自然生产时,就会出现癌症。干扰细胞的正常功能。白血病,淋巴瘤骨髓瘤是三种类型的血癌。我们研究的目的是评估和提高大学生对血液恶性肿瘤的认识。根据钦奈牙科学生对血液恶性肿瘤消毒方法的认识,使用GoogleForms编写了一份问卷。然后使用在线GoogleForm链接在一组参与者中分发。参与者被问及他们对血液恶性肿瘤的知识水平,大多数(68.97%)都知道这一点,而27.59%不知道,其余(3.45%)不确定。当被问及牙齿护理如何检测各种血液恶性肿瘤时,10.34%的参与者回答说:“病人谈论任何异常,"75.86%回答为"口头表现,”和13.79%的人回答为“牙医无法检测到血液恶性肿瘤。“从以上结果和讨论来看,我们可以得出结论,参加调查的大多数牙科学生都知道血液系统恶性肿瘤及其各种类型。
    Cancers of blood arise when the abnormal blood cells undergo uncontrolled growth which outpaces the natural production of normal blood cells, interfering with the cells\' normal functions. Leukemia, lymphoma, and myeloma are the three types of blood cancers. The aim of our study is to assess and create awareness of hematological malignancies among college students. A questionnaire was prepared using Google Forms based on the awareness of the Hematological malignancies disinfection methods among dental students in Chennai. It was then circulated among a certain set of participants using an online Google Form link. The participants were asked about their knowledge level regarding hematological malignancies and a majority (68.97%) were aware of the same, whereas 27.59% were not aware and the rest (3.45%) were not sure. When asked about how dental care detects various hematological malignancies, 10.34% of the participants replied as \"patient speaks about any abnormality,\" 75.86% replied as \"oral manifestations,\" and 13.79% replied as \"dentists cannot detect hematological malignancies.\" From the above results and discussion, we can come to the conclusion that most of the dental students who participated in the survey are aware of hematological malignancies and its various types.
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