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The Effect of Various Genetic Diseases and Eye Surgeries on Iris Discoloration 各种遗传疾病和眼科手术对虹膜变色的影响
Pub Date : 2022-06-15 DOI: 10.31579/2692-9406/120
A. Ahmadi
The color of human eyes is often the same as the iris of the eye, which itself consists of two parts: the anterior layer of iris stroma and the posterior layer or posterior pigment epithelium. Based on experiments, it is believed that iris color is determined based on four factors: pigment granules in the posterior pigment epithelium, pigment concentration in iris stromal melanocytes, melanin pigments in iris melanocytes, and the scattering and absorption of light from the extracellular matrix properties of the stroma. Becomes. In general, melanocytes in the iris stroma have a greater effect on iris color. These types of cells contain a biopolymeric and inert substance called melanin, which itself has two types: brown-black or Eumelanin and red-yellow or Pheomelanin.
人眼的颜色通常与眼睛的虹膜相同,虹膜本身由两部分组成:虹膜基质的前层和色素上皮的后层。基于实验,认为虹膜颜色是基于四个因素决定的:后色素上皮中的色素颗粒、虹膜基质黑色素细胞中的色素浓度、虹膜黑色素细胞的黑色素以及基质细胞外基质特性对光的散射和吸收。成为。一般来说,虹膜基质中的黑色素细胞对虹膜颜色有更大的影响。这些类型的细胞含有一种称为黑色素的生物聚合物和惰性物质,黑色素本身有两种类型:棕黑色或真黑色素和红黄色或苯丙氨酸。
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引用次数: 0
Review on Applications of Dendrimer-Chemical Compounds in Pharmaceutical and Industrial Fields 树状化合物在制药和工业领域的应用综述
Pub Date : 2022-06-15 DOI: 10.31579/2692-9406/115
Nagham Mahmood Aljamali
This review involved Dendrimer in pharmaceutical applications. Dendrimers are the most important medical nano-polymers in the fields of chemistry and pharmacology, which have been used in many pharmaceutical applications. Many technical applications of many biological elements such as proteins, viruses, or bacteria, including applications of chromatography, optical information technology, sensors, stimulation and drug delivery, require immobilization or immobilization of these biologicals. Here, carbon nanotubes, gold particles and synthetic polymers can be used for such purposes. Here we note that this immobilization process can be achieved mostly through adsorption or chemical bonding or to a lesser extent by incorporating these elements as guests in the host matrices. We also note that in the case of guest and host systems, an optimal method for immobilizing the bio-elements as well as incorporating them into a serial structure based on the nanoscale must be established to facilitate the interactions of the bio-nano-elements within their own environment. This is due to the large number of synthetic or natural polymers available and the advanced and developed methods for processing such systems for nanofibers, rods or tubes etc., this makes the polymers a good base for immobilizing different biomaterials.
本文综述了树枝状聚合物在药物应用中的应用。树枝状聚合物是化学和药理学领域中最重要的医用纳米聚合物,在许多药物应用中都有应用。许多生物元件如蛋白质、病毒或细菌的许多技术应用,包括色谱、光学信息技术、传感器、刺激和药物递送的应用,都需要固定或固定这些生物制品。这里,碳纳米管、金颗粒和合成聚合物可以用于这样的目的。在这里,我们注意到,这种固定化过程主要可以通过吸附或化学键合来实现,或者在较小程度上通过将这些元素作为客体结合到宿主基质中来实现。我们还注意到,在客体和宿主系统的情况下,必须建立一种固定生物元素并将其结合到基于纳米尺度的串联结构中的最佳方法,以促进生物纳米元素在其自身环境中的相互作用。这是由于大量的合成或天然聚合物可用,以及用于处理纳米纤维、棒或管等系统的先进和开发的方法,这使得聚合物成为固定不同生物材料的良好基础。
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引用次数: 0
A new combination of surgical techniques for the treatment of 1st carpometacarpal joint arthritis 一种新的联合手术技术治疗第一腕掌关节关节炎
Pub Date : 2022-06-15 DOI: 10.31579/2692-9406/117
Konstantinos C Xarchas
Up till now, many different techniques have been used for the treatmentof 1st carpometacarpal (cmc) joint arthritis. Here we present a new combination of well- known techniques and surgical approaches that gave excellent results in a five year follow up.
到目前为止,许多不同的技术已经被用于治疗第一腕掌关节炎。在这里,我们提出了一种新的组合,众所周知的技术和手术方法,在五年的随访中取得了良好的结果。
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引用次数: 0
Fracture Toughness, Hardness, and Microstructure of Ceramic Modified Versus Resin Modified Glass Ionomer Restorative Materials 陶瓷改性与树脂改性玻璃离子体修复材料的断裂韧性、硬度和微观结构
Pub Date : 2022-05-25 DOI: 10.31579/2692-9406/110
Ibrahim M. Hamouda
The aim of this study was evaluation and comparison of fracture toughness, hardness and microstructure of ceramic-modified versus resin-modified glass ionomer restorative materials. For fracture toughness, 20 specimens from both materials were fabricated in a stainless-steel split mold (25mm length, 2.5mm thickness and 5mm width). Fracture toughness was measured using Lloyd universal testing machine with cross head speed 2 mm/min. For hardness testing, 20 specimens from both materials were fabricated in a disc-shaped stainless-steel mold (5mm diameter and 2mm height). All specimens were stored in distilled water at 37°C for 24 hours. Hardness was measured using Vickers micro hardness tester with 50 g load. The microstructure of both materials was examined using scanning electron microscopy. The results of this study showed there wasn’t significant difference between both materials in fracture toughness. The hardness of ceramic-modified glass ionomer was higher than that of the resin-modified type. The addition of ceramic filler to the glass ionomer didn’t improve its fracture toughness. The microstructure of resin-modified glass ionomer showed tight packing between the matrix and the resin filler, while the ceramic-modified glass ionomer showed separated matrix from the ceramic filler.
本研究的目的是评估和比较陶瓷改性与树脂改性玻璃离聚物修复材料的断裂韧性、硬度和微观结构。对于断裂韧性,在不锈钢分模(25mm长、2.5mm厚和5mm宽)中制作了20个来自这两种材料的试样。使用Lloyd万能试验机以2mm/min的十字头速度测量断裂韧性。为了进行硬度测试,在圆盘形不锈钢模具(直径5毫米,高度2毫米)中制作了两种材料的20个试样。所有样品均在37°C的蒸馏水中储存24小时。使用维氏显微硬度计在50g载荷下测量硬度。使用扫描电子显微镜检查了这两种材料的微观结构。研究结果表明,两种材料的断裂韧性没有显著差异。陶瓷改性玻璃离聚物的硬度高于树脂改性型。在玻璃离聚物中加入陶瓷填料并没有提高其断裂韧性。树脂改性玻璃离聚物的微观结构显示基体与树脂填料之间紧密堆积,而陶瓷改性玻璃离聚物显示基体与陶瓷填料分离。
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引用次数: 0
Application of the Diagnostic Tool Efa-4 in Dementia Efa-4在痴呆诊断中的应用
Pub Date : 2022-05-25 DOI: 10.31579/2692-9406/112
Erkotidou Sofia
Speech is a brain function that includes virtual, mobile and sensory part for the understanding and the production of spoken and written language. The aim of this study was to present the adaptation of the diagnostic tool Examining for aphasia – 4th edition (EFA -4) in the Greek language. In dementia and especially in Alzheimer’s disease (AD), the speech and language disorders are the main diagnostic features, along with the worsening impairment of memory. The diagnostic tool EFA-4 is a standardized, reliable and valid measure of speech and language disorders. The test was administered to 50 adults separately. The sample selection, although it had uniformity in age, was regardless of origin, marital status and socioeconomic status. According to the results of the research, the EFA-4 is perceived to be particularly useful in the setting of language deficits of the patients with AD, who participated in the survey.
言语是一种大脑功能,包括虚拟、移动和感觉部分,用于理解和产生口语和书面语。本研究的目的是介绍希腊语的诊断工具检查失语症-第4版(EFA -4)的改编。在痴呆症,特别是阿尔茨海默病(AD)中,言语和语言障碍是主要的诊断特征,同时伴有记忆损伤的恶化。诊断工具EFA-4是一种标准化、可靠和有效的言语和语言障碍测量方法。这项测试分别对50名成年人进行。样本选择,虽然它有统一的年龄,不考虑出身,婚姻状况和社会经济地位。根据研究结果,EFA-4被认为在参与调查的AD患者的语言缺陷设置中特别有用。
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引用次数: 0
Risk Factors for Increasing of the Cancer Developing 癌症发展增加的危险因素
Pub Date : 2022-05-25 DOI: 10.31579/2692-9406/114
Nagham M Aljamali
The current informational review or survey addresses the risk factors for increasing the risk of developing malignance, tumors have several causes that lead to the occurrence of a tumor. There are a group of interrelated factors, including the genetic factor, the hormonal factor, environmental factors, social biology, and physiology of organs, which can affect its development, in addition to other risk factors, such as: disorders of breast proliferation that are related to the development of Breast malignance, especially if the biopsy shows A typical hyperplasia. However, 70% of malignance patients cannot identify risk factors. Advanced-stage malignance s can erode the skin to cause open sores (ulcers), but they are not necessarily painful. Women with non-healing wounds in the breast should have a biopsy. Breast malignance may spread to other places in the body and lead to other symptoms. The most common first site of spread is often the lymph nodes under the arm, although malignance -carrying lymph nodes may be imperceptible. Over time, malignance cells may spread to other organs, including the lungs, liver, brain and bones. Once in these places, new symptoms related to the malignance, such as bone pain or headaches, may develop.
目前的信息回顾或调查解决了增加恶性肿瘤发生风险的危险因素,肿瘤有几种导致肿瘤发生的原因。有一组相互关联的因素,包括遗传因素、激素因素、环境因素、社会生物学、器官生理学等,都可以影响其发展,此外还有其他的危险因素,如:乳腺增生障碍与乳腺恶性肿瘤的发展有关,特别是如果活检显示典型增生。然而,70%的恶性肿瘤患者无法识别危险因素。晚期恶性肿瘤会侵蚀皮肤,导致开放性溃疡(溃疡),但它们不一定是疼痛的。乳房伤口不能愈合的妇女应该做活检。乳腺恶性肿瘤可能扩散到身体的其他部位并导致其他症状。最常见的第一个扩散部位通常是腋下的淋巴结,尽管携带恶性肿瘤的淋巴结可能不易察觉。随着时间的推移,恶性细胞可能扩散到其他器官,包括肺、肝、脑和骨骼。一旦进入这些部位,可能会出现与恶性肿瘤相关的新症状,如骨痛或头痛。
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引用次数: 0
Deodar Cedar (Cedrus Deodara): Efficacy for Potential of Secondary Metabolites and Antibacterial Activity 雪松(Cedrus Deodara):次生代谢物潜能的功效和抗菌活性
Pub Date : 2022-05-25 DOI: 10.31579/2692-9406/111
V. Bhardwaj
The setback of microbial resistance is growing and the use of antimicrobial drugs in the future is still uncertain. Infectious diseases are accountable for millions of global deaths annually. Therefore, necessary steps need to be taken to reduce this problem. In the present study, crude extracts of leaves, bark and resins of Cedrus deodara in methanol was investigated for secondary metabolites (flavonoids, glycosides, phenols, saponins, tannins, terpenoids) and antibacterial effect of Cedrus deodara was evaluated on multidrug resistant (MDR) strains of Bacillus subtilis (ATCC 6633), E. coli (ATCC 8739), Salmonella enterica (ATCC 14028), Staphylococcus aureus (ATCC 6538), Pseudomonas aeruginosa (ATCC 27853) by agar well diffusion method. Ciprofloxacin was used as standard. The methanolic extracts of leaves of C. deodara tested positive for glycosides, flavonoids, phenol, tannins and terpenoids. The Bark was tested positive for glycosides, flavonoids, phenol, tannins but resins was tested positive for terpenoids. Leaves of C. deodara showed zone of inhibition with all the five strains of microorganisms, which were used. C. deodara resin methanolic extract showed maximum zone of inhibition with Bacillus subtilis which are 25 ± 0.1 mm and bark showed maximum zone of inhibition with Staphylococcus aureus 21 ± 0.6 mm. The potency shown by these extracts recommends their use against multidrug resistant microorganisms. Time-kill curve showed a fast and sharp antimicrobial activity. Based on the research experiments, it was identified, that the methanol extract of Cedrus deodara exhibited quite high antimicrobial activity as well as secondary metabolites and this quality together with lots of other values must be considered in green landscape planning of contemporary urban environment and for the other purposes too.
微生物耐药性的挫折正在增加,未来抗菌药物的使用仍然不确定。传染病每年造成全球数百万人死亡。因此,需要采取必要的措施来减少这一问题。本研究采用琼脂孔扩散法研究了雪松叶、树皮和树脂粗提物甲醇中次生代谢产物(黄酮类、糖苷类、酚类、皂苷类、单宁类、萜类)的含量,并评价了雪松对枯草芽孢杆菌(ATCC 6633)、大肠杆菌(ATCC 8739)、肠炎沙门氏菌(ATCC 14028)、金黄色葡萄球菌(ATCC 6538)、铜绿假单胞菌(ATCC 27853)多重耐药菌株的抑菌效果。以环丙沙星为标准品。木香叶甲醇提取物中苷类、黄酮类、酚类、单宁类和萜类化合物检测阳性。树皮中苷类、黄酮类、酚类、单宁类检测阳性,树脂中萜类检测阳性。对5种病原菌均有抑制作用。木檀树脂甲醇提取物对枯草芽孢杆菌的最大抑制区为25±0.1 mm,树皮对金黄色葡萄球菌的最大抑制区为21±0.6 mm。这些提取物所显示的效力建议它们用于对抗多重耐药微生物。时间杀伤曲线显示出快速而明显的抗菌活性。通过实验研究发现,雪松甲醇提取物具有较高的抗菌活性和次生代谢物,在当代城市环境的绿色景观规划和其他用途中,必须考虑到这一品质和其他许多价值。
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引用次数: 0
Relationship between Food Type and Increased Risk of Cancer 食物类型与癌症风险增加的关系
Pub Date : 2022-05-25 DOI: 10.31579/2692-9406/113
Nagham M Aljamali
The type and nature of food affect the increase or decrease in the risk of developing cancerous tumors and the speed of their spread, as the type of food has a significant impact on increasing the risk of cancer.About a third of deaths from cancer are attributed to tobacco use, high body mass index (BMI), alcohol use, low intake of fruits and vegetables, and lack of physical activity. Cancer-causing infections, such as hepatitis and HPV, are responsible for 30% of cancer cases in low- and lower-middle-income countries. It is common for late-stage cancer symptoms to be unavailable for diagnosis and treatment, especially in low- and middle-income countries. Universal treatment is reported to be available in more than 90% of high-income countries, but only less than 15% of low-income countries. In 2019, only 1 in 3 countries reported high-quality data on cancer rates. Cancer is a general term that includes a wide range of diseases that can affect any part of the body. Other terms used are malignant tumors and neoplasms. A hallmark of cancer is the rapid generation of abnormal cells that grow outside their usual boundaries and can then invade neighboring parts of the body and spread to other parts of the body. The last operation is called metastasis, and metastases are the most important cause of death from cancer. Currently, between 30% and 50% of cancer cases can be prevented by avoiding disease risk factors and implementing existing, evidence-based strategies for prevention. The burden of cancer can also be reduced by detecting the disease early and providing patients with adequate treatment and care, knowing that the chances of recovery from many types of cancer increase if they are diagnosed early and treated appropriately.
食物的类型和性质影响癌性肿瘤发生风险的增加或减少及其扩散速度,因为食物的类型对增加癌症风险有重大影响。大约三分之一的癌症死亡归因于吸烟、高体重指数(BMI)、饮酒、水果和蔬菜摄入量低以及缺乏体育活动。在中低收入国家,肝炎和人乳头状瘤病毒等致癌感染导致30%的癌症病例。晚期癌症症状无法诊断和治疗是很常见的,尤其是在中低收入国家。据报道,90%以上的高收入国家提供了普遍治疗,但只有不到15%的低收入国家提供。2019年,只有三分之一的国家报告了癌症发病率的高质量数据。癌症是一个通用术语,包括可以影响身体任何部位的广泛疾病。其他使用的术语是恶性肿瘤和肿瘤。癌症的一个标志是异常细胞的快速生成,这些细胞生长在正常边界之外,然后可以侵入身体的邻近部位并扩散到身体的其他部位。最后一个手术被称为转移,转移是癌症死亡的最重要原因。目前,30%至50%的癌症病例可以通过避免疾病风险因素和实施现有的循证预防策略来预防。癌症的负担也可以通过早期发现疾病并为患者提供足够的治疗和护理来减轻,因为他们知道,如果早期诊断并适当治疗,许多类型的癌症的康复机会会增加。
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引用次数: 0
Evaluation of Cardiovascular Markers in Normotensive Pregnant Women 血压正常孕妇心血管指标的评价
Pub Date : 2022-03-24 DOI: 10.31579/2690-8816/107
O. Akinfolarin, Bartimaeus, E.S, Akinfolarin O.M.
Pregnancy is associated with series of biochemical changes such as changes in cardiovascular markers. These changes may contribute to risk of developing cardiovascular disease among this group of people. Therefore, this work was aimed at evaluating changes in cardiovascular biochemical markers in pregnancy. This research was a cross-sectional study with 150 female subjects divided into three groups; control (non-pregnant women), 2nd trimester and 3rd trimester. Each of the group had 50 subjects each. Subjects were selected randomly from Rivers State University and Rivers State University Teaching Hospital. Fasting blood was collected using venipuncture technique (WHO, 2010). The collected blood was carefully dispensed into plain vacutainer tubes and assayed for uric acid, Apo A1 and B, CRP, TG, HDL and TC while VLDL and LDL were calculated. The data obtained from the study were analyzed using GraphPad Prism Version 8.0.2.263. ANOVA results revealed that there were significant differences in TC, TG, LDL, HDL, VLDL, CRP, ApoA1, and ApoB levels among non-pregnant, 2nd trimester and 3rd trimester groups of normotensive pregnant women (P<0.05) except for uric acid (UA) that showed no significant difference. Post hoc analysis revealed significant difference in studied parameters between groups except in HDL, TG and VLDL in non-pregnant and 2nd trimester group while UA remained non-significant between compared groups. This study has shown that pregnancy causes significant changes in cardiovascular risk markers in healthy pregnant women.
妊娠与一系列生化变化有关,如心血管标志物的变化。这些变化可能会增加这一人群患心血管疾病的风险。因此,这项工作旨在评估妊娠期心血管生化标志物的变化。这项研究是一项横断面研究,150名女性受试者被分为三组;对照组(非孕妇)、妊娠中期和妊娠晚期。每组各有50名受试者。受试者从里弗斯州立大学和里弗斯州立学校教学医院随机抽取。使用静脉穿刺技术采集禁食血液(世界卫生组织,2010年)。将收集的血液小心地分配到普通的真空管中,并测定尿酸、Apo A1和B、CRP、TG、HDL和TC,同时计算VLDL和LDL。使用GraphPad Prism版本8.0.2.263对研究中获得的数据进行分析。ANOVA结果显示,除尿酸(UA)无显著差异外,非妊娠组、妊娠中期组和妊娠晚期组的TC、TG、LDL、HDL、VLDL、CRP、ApoA1和ApoB水平均存在显著差异(P<0.05)。事后分析显示,除了非妊娠组和妊娠中期组的HDL、TG和VLDL外,两组之间的研究参数存在显著差异,而UA在比较组之间仍然不显著。这项研究表明,怀孕会导致健康孕妇心血管风险标志物发生显著变化。
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引用次数: 0
Covid-19 Vaccine Efficacy on Omicron Variant 新冠病毒疫苗对Omicron变异的疗效
Pub Date : 2022-03-24 DOI: 10.31579/2692-9406/109
Sadique Hussain
The introduction of coronavirus (CoV) shocked our planet in December 2019, resulting in over five million deaths worldwide over the previous two years [1]. Physical and social separation is required as a precautionary step for this infectious and transmissible pandemic. There are several mutant variations of the original SARS-CoV-2. Because of its striking similarities to SARS-CoV, the new coronavirus was first termed SARS-CoV-2 (2019-nCoV), but was later designated Coronavirus Disease-19, or COVID-19
2019年12月,冠状病毒(CoV)的引入震惊了我们的星球,在过去两年中,全球有500多万人死亡[1]。身体和社会隔离是应对这种传染性和可传播性流行病的预防措施。原始严重急性呼吸系统综合征冠状病毒2型有几种突变变体。由于其与SARS-CoV惊人的相似性,新型冠状病毒最初被称为SARS-CoV-2(2019-nCoV),但后来被命名为冠状病毒病-19或新冠肺炎
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引用次数: 1
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Biomedical research and clinical reviews
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