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A Synchronous Blind Test and Methodological Comparison Between Colloidal Gold Rapid Test vs RT-PCR For Sars-Cov-2 Detection 胶体金快速检测与RT-PCR检测Sars-Cov-2的同步盲法及方法学比较
Pub Date : 2022-11-30 DOI: 10.24018/ejbiomed.2022.1.5.26
A. Mourtzikou, D. Tsiftsis, Maria Agrogianni, Nikolaos Kasimatis, Anthoula Dritsa, M. Stamouli, Panagiotis Koumpouros, Christina Seitopoulou, Elpida Toka
Background: The current pandemic due to novel SARS-CoV-2 virus dramatically affected health care systems and public health worldwide. The present study aimed to evaluate two analytical methods, colloidal gold antigen rapid test vs reference PCR for the detection of SARS-CoV-2. The patients enrolled in the trial were admitted at the emergency department of a tertiary care hospital, with symptoms of suspected COVID-19 disease.Methods: A total of 300 patients participated in the study. Patients’ age, gender and result from the Colloidal antigen rapid test were recorded. PCR detection for SARS-CoV-2 was then applied, according to the manufacturer’s instructions. Statistical analysis of all collected data was performed for sensitivity, specificity, ROC curves, PV+, PV- and Cohen’s kappa coefficient. McNemar’s chi-squared test and p-values were also tested.Results: A p-value=0.045 from McNemar’s chi-squared test for CI 95% was observed, so H0 marginally is not rejected. The sensitivity of colloidal gold antigen rapid test was 79%, the specificity 96%, PV+89%, PV-91% and the kappa coefficient=0.79 (>0.5) that correlates to substantial agreement according to Cohen’s Kappa interpretation.Conclusions: Through the methodological comparisons and according to WHO guidelines for the sensitivity, specificity and kappa coefficient that correlates to substantial agreement the Colloidal Gold Antigen Rapid Test for SARS-CoV-2 meet the needs of clinical test in the emergency unit playing an important role in the context of mass patient screening and screening in remote areas.
背景:当前由新型SARS-CoV-2病毒引起的大流行严重影响了全球卫生保健系统和公共卫生。本研究旨在评价胶体金抗原快速检测法和参比PCR两种检测SARS-CoV-2的方法。参加试验的患者是一家三级保健医院的急诊科收治的,他们有疑似COVID-19疾病的症状。方法:共300例患者参与研究。记录患者年龄、性别及胶体抗原快速检测结果。然后根据制造商的说明进行SARS-CoV-2 PCR检测。对收集到的所有数据进行敏感性、特异性、ROC曲线、PV+、PV-和Cohen’s kappa系数的统计分析。McNemar卡方检验和p值也进行了检验。结果:McNemar卡方检验的p值=0.045,CI为95%,因此H0边际不被拒绝。胶体金抗原快速检测的敏感性为79%,特异性为96%,PV+89%, PV-91%, kappa系数=0.79(>0.5),根据Cohen’s kappa解释基本一致。结论:通过方法学比较,根据WHO指南对SARS-CoV-2的敏感性、特异性和相关kappa系数的基本一致,胶体金抗原快速检测满足急诊科临床检测的需要,在大规模患者筛查和偏远地区筛查的背景下发挥重要作用。
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引用次数: 0
The Ethanol Extract of Tangse Liberica Coffee (Coffea liberica) Inhibited the Reduction of Leydig Cell Number and Testosterone Levels in Male Wistar Rats (Rattus norvegicus) Exposed to Ultraviolet B Light Liberica Tangse Coffee (Coffea Liberica)乙醇提取物对紫外光照射下褐家鼠(Rattus norvegicus)间质细胞数量和睾酮水平的抑制作用
Pub Date : 2022-09-21 DOI: 10.24018/ejbiomed.2022.1.5.24
Dhea Frisilla, W. Pangkahila, A. E. Darwinata
Background: Aging is a complex mechanism related to various factors including free radicals. Free radicals that occur due to exposure to ultraviolet light can cause oxidative stress and damage the spermatogenesis process, including Leydig cells and testosterone. Therefore, antioxidants play a very important role in inhibiting these reactions, which are abundant in coffee. This study aimed to analyze the effect of the ethanol extract of Tangse liberica coffee (Coffea liberica) in inhibiting the decrease in Leydig cell number and testosterone levels in male Wistar (Rattus norvegicus) rats exposed to Ultraviolet B light.Methods: This study includes a post-test-only control group type of laboratory experimental study. The research group was divided into three groups, namely positive control (without giving coffee), treatment 1 (giving coffee extract 216 mg/kgBW), and treatment 2 (giving coffee extract 432 mg/kg BW). A total of 30 rats were used in this study and exposed to UV-B 0.225 MW/cm² 8 hours per day for 28 days. Testosterone assessment was carried out by examining blood specimens and Leydig cell counts were carried out histologically with Hematoxylin-Eosin staining. One-way ANOVA analysis and Kruskal Wallis test followed by post hoc test were performed in this study with a significance level of 95%.Results: The result showed a significant difference in the number of Leydig cells between the study groups (p = 0.016) with the highest mean in group 1, 48.27 9.12 cells/LFoV. The same thing also happened to the difference in testosterone levels between groups (p < 0.001) with the most dominant mean in treatment group 2 being 76.42 nmol/L.Conclusion: The conclusion of this research is the administration of the ethanol extract of Tangse liberica coffee (Coffea liberica) can inhibit the decrease in Leydig cells number and testosterone levels in male Wistar (Rattus norvegicus) rats exposed to Ultraviolet B light.
背景:衰老是包括自由基在内的多种因素共同作用的复杂过程。由于暴露在紫外线下而产生的自由基会引起氧化应激,损害精子形成过程,包括间质细胞和睾丸激素。因此,咖啡中富含的抗氧化剂在抑制这些反应中起着非常重要的作用。本研究旨在分析唐斯liberica咖啡(Coffea liberica)乙醇提取物对紫外光照射下雄性褐家鼠间质细胞数量和睾酮水平下降的抑制作用。方法:本研究采用纯后试对照组式的实验室实验研究。研究小组分为三组,分别为阳性对照组(不给予咖啡)、处理1组(给予咖啡提取物216 mg/kgBW)和处理2组(给予咖啡提取物432 mg/kgBW)。本研究共使用30只大鼠,每天8小时暴露于0.225 MW/cm²的UV-B下,持续28天。通过检查血液标本来评估睾丸激素,并用苏木精-伊红染色进行组织学上的间质细胞计数。本研究采用单因素方差分析、Kruskal Wallis检验和事后检验,显著性水平为95%。结果:各组间质细胞数差异有统计学意义(p = 0.016),以第1组最高,为48.27 9.12个细胞/LFoV。各组间睾酮水平的差异也有同样的现象(p < 0.001),治疗组2的最优势平均值为76.42 nmol/L。结论:本研究的结论是,给药唐斯liberica咖啡(Coffea liberica)乙醇提取物可以抑制紫外线B光照射下雄性Wistar (Rattus norvegicus)大鼠间质细胞数量和睾丸激素水平的下降。
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引用次数: 0
Assessment of HER2/neu among Female with Invasive Ductal Breast Carcinoma, Using Manual Tissue Microarray Technology in Khartoum State, Sudan 在苏丹喀土穆州使用人工组织芯片技术评估浸润性导管乳腺癌女性患者的HER2/neu
Pub Date : 2022-08-31 DOI: 10.24018/ejbiomed.2022.1.4.20
R. Sidahmed, A. Babiker, E. A. Ahmed, Alaa E. Abbas
The human epidermal growth factor receptor-2 (HER2), which is expressed in large amount in 20%-30% of breast cancer patients, is associated with disease recurrences, shortened disease survival, and bad prognosis. The aim of this study is to evaluate the expression of (Her2/neu) receptor as a diagnostic and prognostic marker in Invasive Ductal Breast cancer in Sudanese female patients. The study was performed on 35 archival paraffin blocks previously diagnosed as invasive ductal breast cancer (IDC), then a second diagnosis was done using IHC staining (Her2/neu). The obtained information is arranged in a standard master sheet, then analyzed using a statistical package for social science (SPSS) version 20 computer program. The age 30-45years was the most frequent age group 48.6% (17/35), followed by 46-60 years 40% (14/35). The majority of samples were grade III 74.3% (26/35) and the samples of grade II were 25.7% (9/35). the majority of TMA results were positive for Her2/neu receptor 65.7% (23/35) and the negative results were 34.3% (12/35) the majority of TMA score were (+) 31.4% (11/35), followed by (++) 17.2% (6/35), then (+++) 11.4% (4/35), then (++++) 5.7% (2/35), and the negative result were, 34.3% (12/35). There was a significant relation between H&E diagnosis with TMA result for Her2/ neu diagnosis that the P-value (0.0002). There was an insignificance relation between H&E diagnosis of grades with TMA results for Her2/ neu diagnosis that the P-value (0.08). In conclusion, HER2 is over-expressed in 65.7% of the patient while internationally it is over-expressed in 15-30%. This provides valuable prognostic and predictive implications in order to choose the suitable treatment for the patients.
人表皮生长因子受体-2 (HER2)在20%-30%的乳腺癌患者中大量表达,与疾病复发、疾病生存期缩短、预后不良相关。本研究的目的是评估(Her2/neu)受体在苏丹女性浸润性导管乳腺癌中作为诊断和预后标志物的表达。该研究对35例先前诊断为浸润性导管性乳腺癌(IDC)的档案石蜡块进行了研究,然后使用免疫组化染色(Her2/neu)进行了第二次诊断。获得的信息被安排在一个标准的主表,然后使用社会科学统计软件包(SPSS) 20版计算机程序进行分析。30 ~ 45岁是最常见的年龄组,占48.6%(17/35),其次是46 ~ 60岁,占40%(14/35)。以ⅲ级为主,占74.3%(26/35),ⅱ级为主,占25.7%(9/35)。多数TMA结果Her2/neu受体阳性65.7%(23/35),阴性34.3% (12/35),TMA评分以(+)31.4%(11/35)、(++)17.2%(6/35)、(+++)11.4%(4/35)、(++++)5.7%(2/35)居多,阴性34.3%(12/35)。H&E诊断与TMA结果Her2/ neu诊断的p值(0.0002)有显著相关性。分级H&E诊断与TMA结果在Her2/ neu诊断中的p值(0.08)相关性不显著。总之,HER2在65.7%的患者中过表达,而在国际上,HER2在15-30%的患者中过表达。这为患者选择合适的治疗方法提供了有价值的预后和预测意义。
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引用次数: 0
An Assessment of Knowledge, Practice and Barriers of Voluntary Blood Donation among Staff and Patients of a Tertiary Hospital in Nigeria 尼日利亚一家三级医院工作人员和患者自愿献血的知识、实践和障碍评估
Pub Date : 2022-08-16 DOI: 10.24018/ejbiomed.2022.1.4.17
Aondona David Daniel, N. Akwaras, Matthew Ngbede Ocheifa, Chukwuemeka Nwaeze, Laadi T. Swende, Bamidele Ohiozoje Ornguga, Rufus IfechukwuIzeji
Background: Blood and blood products are essential resources in the management of many health conditions. It has been tasking to achieve complete reliance on voluntary unpaid blood donors. Hence, assessing the knowledge, practices and barriers of voluntary blood donation can impact on improvement of the number of voluntary blood donors.Aim: To assess the knowledge, practice, and barriers of voluntary blood donation among the participants.Method: A cross sectional descriptive study was carried out using pre-tested interviewer administered questionnaire administered to 288 participants selected by systematic random sampling technique. The data was analysed using SPSS version 20.Results: The mean age of the respondents was 38.81 ± 11.67. Males were slightly more (51.70%) than females (n=149, 51.70%). Most were married (n=204, 70.80%), of the Tiv tribe (n=160, 55.60%) and were Christians (n=263, 91.30). Over half had tertiary education (n=113, 55.20%), were civil servants (n=159, 55.20%) and worked in non-health related disciplines (n=168, 58.30%) respectively. Over two-third reside in rural areas (n=206, 71.50%). 0nly 30.56% had good knowledge scores. Those who had ever voluntarily donated blood made up 11.1%. Females were less likely to donate blood (aOR=0.19, CI 0.08 – 0.48, p=0.00). Those with tertiary education were nearly six times more likely to have donated blood (aOR=5.92, CI 1.66 – 21.10, p=0.01). Those with non-health related jobs (aOR=0.00, CI 0.06 – 0.46, p=0.00) were less likely to donate blood. The most common reason for deferral was viral infections (37.50%) such as hepatitis B, hepatitis C and HIV infection. The commonest barriers of voluntary blood donation fear of blood being sold for rituals (22.6%), fear (22.9) fear of needle prick (16.7%).
背景:血液和血液制品是管理许多健康状况的必要资源。实现完全依赖自愿无偿献血者一直是一项艰巨的任务。因此,评估自愿献血的知识、做法和障碍可对增加自愿献血者人数产生影响。目的:了解志愿者无偿献血的知识、行为及存在的障碍。方法:采用系统随机抽样方法,采用预测式访谈问卷对288名被试进行横断面描述性研究。数据采用SPSS version 20进行分析。结果:调查对象平均年龄为38.81±11.67岁。男性(51.70%)略多于女性(n=149, 51.70%)。大多数已婚(n=204, 70.80%), Tiv族(n=160, 55.60%),基督徒(n=263, 91.30)。超过一半的人受过高等教育(n=113, 55.20%),公务员(n=159, 55.20%)和在非卫生相关学科工作(n=168, 58.30%)。超过三分之二居住在农村地区(n= 206,71.50%)。知识得分良好的仅占30.56%。曾经自愿献血的占11.1%。女性较少献血(aOR=0.19, CI 0.08 ~ 0.48, p=0.00)。受过高等教育的人献血的可能性是其他人群的近6倍(aOR=5.92, CI 1.66 ~ 21.10, p=0.01)。那些从事与健康无关的工作的人(aOR=0.00, CI 0.06 - 0.46, p=0.00)献血的可能性较小。最常见的原因是病毒感染,如乙型肝炎、丙型肝炎和艾滋病毒感染(37.50%)。自愿献血最常见的障碍是害怕血液被用于宗教仪式(22.6%),害怕(22.9%)害怕针刺(16.7%)。
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引用次数: 0
Modeling Approaches for Fluidic Mass Transport in Next Generation Micro and Nano Biomedical Sensors 新一代微纳米生物医学传感器中流体质量传递的建模方法
Pub Date : 2022-05-20 DOI: 10.24018/ejbiomed.2022.1.3.12
Siyua Cao, Naveen Weerasekera, Dawa Ram Shingdan
This review discusses on current methodologies and trends in modeling fluidic mass transport phenomena in micro and nano scale biomedical devices. We have presented the governing equations for species transport in micro and nano scales and provided analytical as well as computational approaches that can aid in obtaining solutions for complex flow problems. We have also reviewed novel methodologies that modern research community utilized for simulating species transport in micro and nano biomedical sensing devices.
本文综述了目前微纳米尺度生物医学设备中流体质量传输现象建模的方法和发展趋势。我们提出了微观和纳米尺度上物种迁移的控制方程,并提供了分析和计算方法,可以帮助获得复杂流动问题的解决方案。我们还回顾了现代研究界在微纳米生物医学传感装置中用于模拟物种迁移的新方法。
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引用次数: 0
Suspected COVID-19 Cases Admitted in a Tertiary Care Hospital. Correlation of Demographic and Clinical Characteristics with Viral Load Results and Hospitalization 三级医院收治的疑似COVID-19病例。人口学和临床特征与病毒载量结果和住院率的相关性
Pub Date : 2022-03-17 DOI: 10.24018/ejbiomed.2022.1.2.6
A. Mourtzikou, Antonia K Korre, M. Stamouli, Christina Seitopoulou, Ioanna Petraki, Georgia Kalliora, Panagiotis Koumpouros, Paraskevi Karle, Maria Kimouli
Background: The current pandemic outbreak of COVID-19 due to the SARS-CoV-2 virus affected the health care systems, health services and economy globally. It also affected the health of the population worldwide, with high mortality and morbidity rates. The present study aimed to study the patients that were admitted to a tertiary care hospital and to investigate the potential correlation between hospitalization and RT-PCR for SARS-CoV-2 results with demographic characteristics and clinical characteristics. Moreover, it aimed to examine a mathematical formula that might describe the correlation of the aforementioned parameters. Methods: The study population included 1244 patients admitted to the Nikea General Hospital "Agios Panteleimon", Piraeus, Greece. Patient age, gender, underlying diseases, travel history, symptoms, etiology for hospital admission and contact with confirmed cases were recorded. Potential correlation of hospitalization and RT-PCR for SARS-CoV-2 results with the aforementioned characteristics were identified by chi-square test of independence and logistic regression analysis. Results: We observed significant correlation of hospitalization with fever, cough, dyspnea, pneumonia, travel history and etiology for hospital admission. We observed significant correlation of RT-PCR for SARS-CoV-2 results with rapid antigen test result, hospitalization etiology for hospital admission and contact with confirmed COVI-19 case. Conclusions: According to the logistic regression model, RT-PCR for SARS-CoV-2 result, fever, dyspnea, pneumonia, and underlying disease are the most important predictors for hospitalization in the population under study. Contact with confirmed COVID-19 case is the most important predictor for RT-PCR for SARS-CoV-2 result.
背景:当前由SARS-CoV-2病毒引起的COVID-19大流行疫情对全球卫生保健系统、卫生服务和经济产生了影响。它还影响到全世界人口的健康,死亡率和发病率都很高。本研究旨在研究在三级医院住院的患者,探讨住院与SARS-CoV-2的RT-PCR结果与人口学特征和临床特征之间的潜在相关性。此外,它的目的是检验一个可能描述上述参数的相关性的数学公式。方法:研究对象为希腊比雷埃夫斯市“Agios Panteleimon”耐克综合医院的1244例患者。记录患者的年龄、性别、基础疾病、旅行史、症状、入院原因以及与确诊病例的接触情况。通过卡方独立性检验和logistic回归分析,确定住院和SARS-CoV-2 RT-PCR检测结果与上述特征的潜在相关性。结果:住院与发热、咳嗽、呼吸困难、肺炎、旅行史及住院病因有显著相关性。我们观察到SARS-CoV-2的RT-PCR检测结果与快速抗原检测结果、住院原因以及与确诊病例的接触有显著相关性。结论:根据logistic回归模型,SARS-CoV-2的RT-PCR结果、发热、呼吸困难、肺炎和基础疾病是研究人群住院的最重要预测因素。与确诊病例的接触是RT-PCR检测SARS-CoV-2结果的最重要预测因子。
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引用次数: 1
Evaluation of Biochemical Test Results in Patients with COVID-19 Infection COVID-19感染患者生化检测结果评价
Pub Date : 2022-02-16 DOI: 10.24018/ejbiomed.2022.1.1.5
M. Stamouli, Sofia Kougioumtzidou, A. Mourtzikou, Antonia K Korre, Georgia Kalliora, Panagiotis Koumpouros, Maria Tsesmeli, Vasiliki Mpourtsala, Anastasios Skliris, C. Stergiou
Background: The current pandemic outbreak of COVID-19 due to SARS-CoV-2 virus, affected the health care systems, health services and economy globally. Moreover, it significantly affected the health of the population worldwide. Mortality and morbidity rates are still increasing. According to WHO, as of September 2021 there have been 224180869 confirmed cases of COVID-19, including 4621173 deaths. USA, India, and Brazil are the three world's worst-hit countries. In Greece the mortality rate is at 3%. Methods: Study population included 565 patients, who were admitted at the Emergency Department and the Pathology Department of Naval and Veterans Hospital, Athens, Greece, during a period of 3,5 months. Patients’ demographic characteristics, underlying diseases, travel history, symptoms, aetiology of admission and history of contact with confirmed cases were recorded. All patients included to the study were positive for SARS-CoV-2 and characterized as COVID-19 patients. All statistical analyses were conducted using MINITAB 17. Results: Statistically significant differences in the results of albumin (marginal p-value), urea, creatinine, AST, ALT, and LDH between hospitalized and non-hospitalized patients were detected. Also, we observed statistically significant differences in the results of albumin, urea, creatinine, and ALT, between male and female patients. Moreover, patient age was statistically significant between male and female patients. The Logistic regression model of hospitalization show that statistically significant variables are ALT, LDH, age and gender. Conclusions: The rapid spreading of the new COVID-19 pandemic due to SARS-CoV-2 increased the need for the measurement of biochemical tests and the evaluation of their correlation with patient hospitalization. Biochemical monitoring of COVID-19 patients is critical for assessing disease severity and progression as well as monitoring therapeutic intervention. Several common biochemical tests have been implicated in COVID-19 infection progression, providing important prognostic information. In the present study we evaluated the test results of albumin, urea, creatinine, AST, ALT, LDH and total bilirubin in patients with COVID-19 infection.
背景:当前由SARS-CoV-2病毒引起的COVID-19大流行疫情对全球卫生保健系统、卫生服务和经济产生了影响。此外,它还极大地影响了全世界人口的健康。死亡率和发病率仍在上升。据世界卫生组织统计,截至2021年9月,全球共有224180869例新冠肺炎确诊病例,其中4621173例死亡。美国、印度和巴西是世界上受灾最严重的三个国家。希腊的死亡率为3%。方法:研究人群包括565名患者,他们在希腊雅典海军和退伍军人医院急诊科和病理科住院,为期3.5个月。记录患者的人口统计学特征、基础疾病、旅行史、症状、入院病因和与确诊病例的接触史。纳入研究的所有患者均为SARS-CoV-2阳性,并被定性为COVID-19患者。所有统计分析均使用MINITAB 17进行。结果:住院与非住院患者白蛋白(边际p值)、尿素、肌酐、AST、ALT、LDH检测结果差异有统计学意义。此外,我们观察到男性和女性患者在白蛋白、尿素、肌酐和ALT的结果有统计学上的显著差异。此外,患者年龄在男性和女性患者之间具有统计学意义。住院Logistic回归模型显示ALT、LDH、年龄、性别有统计学意义。结论:SARS-CoV-2引起的新型冠状病毒肺炎大流行的快速传播,增加了生化检测的测量需求及其与患者住院率的相关性评估。COVID-19患者的生化监测对于评估疾病严重程度和进展以及监测治疗干预至关重要。几种常见的生化检测与COVID-19感染进展有关,可提供重要的预后信息。本研究评估了COVID-19感染患者的白蛋白、尿素、肌酐、AST、ALT、LDH和总胆红素的检测结果。
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引用次数: 1
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European journal of biomedical research
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