Fissures

裂隙
  • 文章类型: Journal Article
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    从希波克拉底时期到19世纪初,知识进步,但这是一个不平衡的过程。解剖学基本上由Galen定义,直到16世纪初一直用石头铸造。Galen描述了神经解剖学,但没有什么实用价值,因为脑部手术是不可能的。颅骨的解剖结构是已知的,并且在很大程度上是正确的。注意避开额叶空气窦、静脉窦和颞区。大脑在意识中的作用尚不清楚。它被认为是灵魂的所在地,但人们缺乏理解,对它的损害可能会引起昏迷或瘫痪等临床症状。这些归因于脑膜或骨骼的损伤。这个错误最终在18世纪得到纠正,当时大脑被确定为造成颅脑外伤后的许多临床障碍的原因。直到18世纪后期,所有关于创伤后神经功能缺损是对侧的认识都被忽略了,尽管有几位作者指出了这一点。同样,CSF的存在必须等到18世纪才能得到认可。裂隙用钻孔治疗,因为感觉到骨和硬脑膜之间有感染的风险。凹陷的骨折碎片升高,替换,或根据受伤的细节移除。最后,几个世纪以来,外科医生阻塞患者的耳朵以减少钻孔的声音,尽管这样的阻塞会放大噪音。
    From the time of Hippocrates to the early 19th century, knowledge advanced but that was an uneven process. Anatomy was basically defined by Galen and remained cast in stone until the early 16th century. Neuroanatomy was described by Galen but had little practical value, as brain surgery was not possible. The anatomy of the cranium was known and was largely correct. Care was taken to avoid the frontal air sinuses and the venous sinuses and the temporal region. The role of the brain in consciousness was not understood. It was considered the seat of the soul but there was a lack of understanding that damage to it could induce clinical symptoms such as stupor or paralysis. These were variously attributed to injuries to the meninges or the bone. This error was finally corrected in the 18th century when the brain was identified as responsible for much of the clinical disturbance following cranial trauma. All awareness that post traumatic neurological deficit was contralateral was ignored until the late 18th century, although several authors noted it. Likewise, the presence of CSF had to wait until the 18th century until it was recognized. Fissures were treated with trepanation, because of a perceived risk of infection developing between the bone and the dura. Depressed fracture fragments were elevated, replaced, or removed according to the details of the injury. Finally, for centuries surgeons blocked patients ears to reduce the sound of drilling, despite the fact that such a blocking would amplify the noise.
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  • 文章类型: Journal Article
    强化米粒(FRK)是一种富含维生素矿物质的挤压大米形产品,与生米或煮米饭以1:100的比例混合以制备强化大米。在FRK制造中,干燥是影响FRK质量的重要步骤之一。在本研究中,探索了微波技术在180、360和540W下连续干燥FRK,并在180W下进行回火(1、2和3分钟),以评估对干燥曲线的影响,颜色属性,裂隙形成,和烹饪特点。薄层建模建议采用两项指数模型(两个参数),扩散模型(三个参数),和MidilliKucuk(四个参数)作为基于Akaike和贝叶斯信息准则预测水分的最佳模型。较高的MWP(360和540W)显着降低了L*和WI,同时增加了a*,b*,和BI相比,180瓦,这是不可取的。图像处理显示所有FRK样品都有裂缝;然而,1分钟和2分钟的回火可以在一定程度上限制裂缝。在烹饪过程中,裂缝会导致更高的固体损失和籽粒分裂。可以得出结论,适当回火时间的低MWP(<180W)可用于干燥FRK。
    在线版本包含补充材料,可在10.1007/s13197-023-05871-4获得。
    Fortified rice kernels (FRK) are a vitamin-mineral enriched extruded rice-shaped product blended with raw or parboiled rice in a 1:100 ratio to prepare fortified rice. In FRK manufacturing, drying is one of the essential steps that affect the quality of FRK. In the present study, the microwave technique was explored to dry FRK continuously at 180, 360, and 540 W and with the tempering (1, 2, and 3 min) at 180 W to evaluate the effects on the drying curves, color attributes, fissure formation, and cooking characteristics. Thin layer modeling suggested the Two-term exponential model (two parameters), diffusion model (three parameters), and Midilli Kucuk (four parameters) as the best models to predict moisture based on Akaike and Bayesian information criteria. The higher MWP (360 and 540 W) significantly lowered the L* and WI while increasing the a*, b*, and BI compared to 180 W, which was undesirable. Image processing showed fissures in all FRK samples; however, 1 min and 2 min tempering could somewhat restrict the fissure. The fissures caused higher solid losses and increased splitting of kernels during cooking. It can be concluded that the low MWP (< 180W) with appropriate tempering time can be used to dry FRK.
    UNASSIGNED: The online version contains supplementary material available at 10.1007/s13197-023-05871-4.
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  • 文章类型: Journal Article
    种子是专门的植物器官,养育,保护植物后代。三个遗传上不同的种子组织(胚胎,胚乳,和种皮)对于种子活力至关重要。在这项研究中,我们探讨了AtHB25和ICE1之间的关系。先前的结果将ICE1鉴定为AtHB25的靶基因。在种子中,缺乏ICE1(ice1-2)抑制了过表达突变体athb25-1D的种子寿命和不通透性的增加,但令人惊讶的是,种皮脂质聚酯沉积不受影响,如双突变体athb25-1Dice1-2种子所示。zou-4,另一个突变体缺乏适当的胚乳成熟的转录程序,胚乳持续存在,对种子老化也表现出很高的敏感性。对gso1,gso2和tws1-4突变体的分析表明,胚胎表皮完整性的丧失并不构成ice1-2和zou-4种子老化敏感性的基础。然而,扫描电子显微镜显示,在冰原和zou突变体的种皮中存在多个裂缝。因此,这项研究强调了种皮组成和完整性在确保寿命方面的重要性,并表明这些参数取决于多种因素。
    Seeds are specialized plant organs that carry, nurture, and protect plant offspring. Developmental coordination between the three genetically distinct seed tissues (the embryo, endosperm, and seed coat) is crucial for seed viability. In this study, we explore the relationship between the TFs AtHB25 and ICE1. Previous results identified ICE1 as a target gene of AtHB25. In seeds, a lack of ICE1 (ice1-2) suppresses the enhanced seed longevity and impermeability of the overexpressing mutant athb25-1D, but surprisingly, seed coat lipid polyester deposition is not affected, as shown by the double-mutant athb25-1D ice1-2 seeds. zou-4, another mutant lacking the transcriptional program for proper endosperm maturation and for which the endosperm persists, also presents a high sensitivity to seed aging. Analysis of gso1, gso2, and tws1-4 mutants revealed that a loss of embryo cuticle integrity does not underlie the seed-aging sensitivity of ice1-2 and zou-4. However, scanning electron microscopy revealed the presence of multiple fractures in the seed coats of the ice1 and zou mutants. Thus, this study highlights the importance of both seed coat composition and integrity in ensuring longevity and demonstrates that these parameters depend on multiple factors.
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  • 文章类型: Journal Article
    目的:评价高粘性锌增强玻璃离子水门汀(ZRGIC)的渗透性和适应性,使用扫描电子显微镜(SEM),当在各种污染条件下应用于初级第二磨牙的凹槽和裂缝时。材料和方法:将40颗拔除的人初级第二磨牙随机分为五组(每组8颗牙齿),具有不同的表面条件(用40%聚丙烯酸调理,干燥条件,水污染,唾液污染,或唾液污染和空气干燥)在使用手指按压技术放置锌增强的高粘性玻璃离聚物水泥之前,在咬合面上。切开牙齿后,对它们进行了扫描电镜分析,其中每组中的四个通过热循环进行老化,其他四个没有老化。方差分析测试,事后分析,非配对t检验用于统计分析。结果:非老化组密封胶针入度差异有统计学意义,但是在老龄化群体中,密封胶渗透无显著统计学差异。另一方面,各组间的适应性差异有统计学意义(p<0.05)。高粘度锌增强玻璃离聚物裂缝密封剂在40%聚丙烯酸和干燥表面裂缝条件下具有更好的裂缝渗透性和更紧密的适应,无污染。然而,老化后最好的渗透和保留是在有光泽的唾液层的污染裂缝下。结论:ZRGIC是一种高粘性氟化物释放水泥,通过干扰食物滞留和保护牙齿免受龋齿,有效地密封裂缝。建议用最小的敏感氟化物释放GIC技术恢复裂缝,尤其是在年轻人中,不合作的孩子,而不是离开一个容易龋齿的环境。
    Objective: To evaluate the penetration and adaptation of highly viscous zinc-reinforced glass ionomer cement (ZRGIC), using a scanning electron microscope (SEM), when applied under various contaminated conditions on grooves and fissures of primary second molars. Materials and Methods: A total of 40 extracted human primary second molars were randomly assigned into five groups (8 teeth each), with different surface conditions (conditioned with 40% polyacrylic acid, dry condition, water contamination, saliva contamination, or saliva contamination and air-drying) on the occlusal surface before placement of zinc-reinforced highly viscous glass ionomer cement with the finger-press technique. After sectioning the teeth, they were subjected to SEM analysis, where four in each group underwent aging by thermocycling and the other four were without aging. ANOVA tests, post hoc analysis, and unpaired t-tests were used for statistical analyses. Results: There was a significant statistical difference in the sealant penetration in the non-aging group, but in the aging group, there was no significant statistical difference in the sealant penetration. On other hand, a significant statistical difference was found in the adaptation between all the groups (p < 0.05). Highly viscous zinc-reinforced glass ionomer fissure sealants have better fissure penetration and more intimate adaptation under fissures conditioned with 40% polyacrylic acid and dry surface fissures with no contamination. However, the best penetration and retention after aging were under contaminated fissures with a shiny layer of saliva. Conclusions: The ZRGIC is a highly viscous fluoride-releasing cement, effectively seals fissures by interfering with food lodgment and protecting teeth from caries. It is advisable to restore the fissures with the minimal technique of sensitive fluoride-releasing GIC, particularly in young, uncooperative children, rather than leaving a caries-prone environment.
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  • 文章类型: Journal Article
    背景:文献中已发表了几种胎儿脑图,并常用于日常临床实践。然而,这些图表的方法质量尚未得到严格评估。
    方法:MEDLINE,EMBASE,CINAHL,截至2020年12月31日,以电子方式搜索了WebofScience数据库。主要结果是评估评估整个妊娠期胎儿脑结构生长的研究方法。根据“研究设计”,将28项方法学质量标准分为三个领域,统计和报告方法,为了评估纳入研究的方法学适用性,开发了“和”特定的相关神经超声检查方面。总体质量评分定义为低风险偏倚标记的总和,可能的分数范围是0-28。此质量评估应用于报告胎儿脑结构参考范围的每个单独研究。此外,我们根据不同的大脑结构(心室和脑室周围,前脑和中脑和后颅窝)。
    结果:60项研究纳入系统评价。纳入本综述的研究的总体平均质量评分为51.3%。当关注每个被评估的领域时,研究设计的平均质量评分为53.7%,统计和报告方法为“54.2%”,“和38.6%的具体相关神经超声检查方面。“样本量计算,与产后影像学评估的相关性,整个胎儿大脑评估是每个评估领域的偏差风险最高的项目,分别。根据不同解剖位置的亚组分析显示,心室和脑室周围结构的质量评分最低,皮质结构的质量评分最高。
    结论:以前发表的大多数报告胎儿脑图的研究方法不佳,有很高的偏差风险,主要是在关注神经超声检查问题时。旨在构建胎儿大脑结构特定生长图的进一步前瞻性纵向研究应遵循严格的方法,以最大程度地减少偏见的风险。保证更高水平的再现性,提高护理水平。
    BACKGROUND: Several fetal brain charts have been published in the literature and are commonly used in the daily clinical practice. However, the methodological quality of these charts has not been critically appraised.
    METHODS: MEDLINE, EMBASE, CINAHL, and the Web of Science databases were searched electronically up to December 31, 2020. The primary outcome was to evaluate the methodology of the studies assessing the growth of fetal brain structures throughout gestation. A list of 28 methodological quality criteria divided into three domains according to \"study design,\" \"statistical and reporting methods,\" and \"specific relevant neurosonography aspects\" was developed in order to assess the methodological appropriateness of the included studies. The overall quality score was defined as the sum of low risk of bias marks, with the range of possible scores being 0-28. This quality assessment was applied to each individual study reporting reference ranges for fetal brain structures. Furthermore, we performed a subgroup analysis according to the different brain structures (ventricular and periventricular, fore-brain and midbrain cerebral and posterior fossa).
    RESULTS: Sixty studies were included in the systematic review. The overall mean quality score of the studies included in this review was 51.3%. When focusing on each of the assessed domains, the mean quality score was 53.7% for \"study design,\" 54.2% for \"statistical and reporting methods,\" and 38.6% for \"specific relevant neurosonography aspects.\" The sample size calculation, the correlation with a postnatal imaging evaluation, and the whole fetal brain assessment were the items at the highest risk of bias for each domain assessed, respectively. The subgroup analysis according to different anatomical location showed the lowest quality score for ventricular and periventricular structures and the highest for cortical structures.
    CONCLUSIONS: Most previously published studies reporting fetal brain charts suffer from poor methodology and are at high risk of biases, mostly when focusing on neurosonography issues. Further prospective longitudinal studies aiming at constructing specific growth charts for fetal brain structures should follow rigorous methodology to minimize the risk of biases, guarantee higher levels of reproducibility, and improve the standard of care.
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  • 文章类型: Journal Article
    良性肛肠疾病是指一组常见的肛肠主诉,会引起相当大的不适,残疾,并且往往对孩子及其家庭构成重大问题。痔疮,裂缝,直肠脱垂,肛周脓肿和肛瘘是儿科人群中最常见的肛门直肠疾病,其外观可能因年龄而异。尽管它们通常遵循良性的过程,必须进行仔细检查,以排除其他严重和复杂的基础病理。他们的诊断是根据病人的病史,体检,内窥镜检查,和成像。此外,这些疾病的管理包括内科和外科治疗方案,如果他们得到及时和适当的治疗可能是有限的和短暂的。这篇综述介绍了文献中关于这些疾病的各个方面的现有数据,包括定义,流行病学,临床表现,发病机制,诊断,手术适应症,和长期结果。
    Benign anorectal disease refers to a diverse group of frequent anorectal complaints that cause considerable discomfort, disability, and often constitute a significant problem for the child and his or her family. Hemorrhoids, fissures, rectal prolapse, and perianal abscess and fistulas are the most common anorectal disorders in pediatric population and their appearance may be age-specific. Although they generally follow a benign course, a careful examination must be performed in order to exclude other serious and complicated underlying pathology. Their diagnosis is based on the patient\'s medical history, physical examination, endoscopy, and imaging. Moreover, the management of these disorders includes medical and surgical treatment options, and if they are treated promptly and properly may be limited and short lived. This review presents the currently available data in the literature on the diverse aspects of these disorders, including the definition, epidemiology, clinical presentation, pathogenesis, diagnosis, indications for surgery, and long-term outcomes.
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  • 文章类型: Journal Article
    Introduction An anal fissure is defined as a longitudinal split in the distal anoderm which extends from the anal verge to the dentate line. Fissures can be of primary or secondary type. The posterior midline is the most common location for primary fissures, while, anterior primary fissures, though rare, are more common in females. The cause of primary fissure is idiopathic. But secondary fissures are associated with other systemic diseases and can occur at an abnormal position anywhere in the anoderm. A high percentage of acute fissures heal spontaneously within three weeks with conservative medical management comprising of a high fiber diet, warm sitz bath, and topical analgesic with steroids. Secondary anal fissures will not heal in any form of treatment until the primary cause is addressed. These fissures often need surgical treatment. The lateral internal sphincterotomy (LIS) is one of the most practiced treatments for chronic anal fissure. Nonetheless, anal incontinence is one of the worrisome complications of LIS. Fissurectomy is one of the options among those techniques which address the issues with LIS. Some studies showed that patients with chronic fissures who are refractory to medical treatment responded well to fissurectomy. Hence, this study was conducted to compare the outcomes of fissurectomy and lateral internal sphincterotomy in the treatment of chronic anal fissure and compare recurrence and postoperative complications among both the procedures. Methods All consecutive patients attending the department of surgery with chronic fissure and age above 18 years were included in the study. All the included patients were randomized into two groups (fissurectomy and LIS) using the serially numbered opaque-sealed envelope (SNOSE) technique. The patients were discharged on the third day. The first visit was scheduled after two weeks and subsequent visits on the first and second months. Then the patients were followed up by telephonic conversation for the next six months. At the end of the follow-up, post-surgical complications were enquired, recorded, and interpreted. Results In the present study, out of a total of 87 patients, 80 patients were included in the study. Among all the patients, 16 patients (20%) developed retention of urine. Four patients in the LIS group showed retention of urine whereas in the fissurectomy group it was twelve. The difference was not statistically significant (p-value: 0.025). A total of 10 patients required catheterization postoperatively. More patients in the fissurectomy group developed incontinence to flatus (p-value: 0.02). Incontinence to liquid and solid was significantly higher in the fissurectomy group (p-value: 0.03 and 0.002, respectively). Conclusion In the present study, it was found that LIS was a better treatment option for chronic anal fissure than Fissurectomy. The postoperative complications were less in LIS than in fissurectomy. But the recurrence was higher in the LIS group while there was no recurrence in the fissurectomy group.
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  • 文章类型: Journal Article
    \"False\" foramina and fissures of the skull are described as openings formed between the adjacent edges of two or more bones and not conduits directly through a single bone. Trauma and metabolic disorders appear to affect these foramina and fissures differently when compared to the \"true\" foramina and fissures. Therefore, the aim of this paper is to provide a narrative review of the current literature about \"false\" foramina and fissures of the skull and skull base with a focus on their clinical significance.
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  • 文章类型: Journal Article
    目的:有多种方法可用于窝沟封闭,包括:密封剂的使用,有或没有机械准备;使用蚀刻,有或没有粘合;以及使用激光作为机械制备的替代方法。这项研究的目的是通过比较密封剂的保留和微泄漏来评估凹坑和裂缝的密封,机械和Er:Yag激光牙釉质制备之间。方法:将60颗提取的声第三磨牙分为六组:A,bur机械制备和密封剂应用;B,bur机械制备,蚀刻和密封剂;C,bur机械制备,蚀刻,粘接和密封剂;D,激光机械制备和密封剂;E,激光机械制备,蚀刻和密封剂应用;F,激光机械制备,蚀刻,粘合,和密封剂。统计分析方法包括Fisher精确检验,多重比较的单向方差分析(ANOVA)的一般线性模型,和Bonferroni多重比较测试。结果:所有组显示密封剂下方的染料微渗漏。使用bur而不是激光的微泄漏较少,41对44个标本,分别。无微渗漏的标本数量减少如下:E组(24),A组(18),B组和F组(17),C组(14),D组(5)。除D组外,所有组的保留率为100%。结论:机械制备增加了密封剂的保留,特别是当使用蚀刻材料时;此外,粘合可以帮助保留。最好的技术是通过激光进行机械制备,然后使用蚀刻,在应用牙科密封剂之前没有粘合。
    Objectives: Various approaches are available for pit and fissure sealing, including: the use of sealants, with or without mechanical preparation; the use of etching, with or without bonding; and the use of lasers as an alternative to mechanical preparation. The objective of this study is to evaluate pit and fissure sealing by comparing the retention and microleakage of sealants, between mechanical and Er:Yag laser enamel preparation. Methods: Sixty extracted sound third molars are classified into six groups: A, bur mechanical preparation and sealant application; B, bur mechanical preparation, etching and sealant; C, bur mechanical preparation, etching, bonding and sealant; D, laser mechanical preparation and sealant; E, laser mechanical preparation, etching and sealant application; F, laser mechanical preparation, etching, bonding, and sealant. Statistical analysis methods include Fisher\'s exact test, a general linear model for one-way analysis of variance (ANOVA) of multiple comparisons, and Bonferroni multiple comparison tests. Results: All the groups showed dye microleakage beneath the sealants. Less microleakage was observed for those that used bur rather than laser, 41 versus 44 specimens, respectively. The number of specimens without microleakage decreased as follows: group E (24), group A (18), groups B and F (17), group C (14), and group D (5). Retention was 100% in all groups except group D. Conclusion: Mechanical preparation increases retention of sealants, especially when etching material is used; additionally, bonding can help the retention. The best technique is mechanical preparation via laser and subsequent use of etching, without bonding prior to application of the dental sealant.
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