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Comparison of Reverse Transcriptase Loop-Mediated Isothermal Amplification and Reverse Transcriptase Polymerase Chain Reaction for Detection of Prostate Specific Antigen 逆转录酶环介导的等温扩增与逆转录酶聚合酶链反应检测前列腺特异性抗原的比较
Pub Date : 2019-01-14 DOI: 10.18502/BCCR.V11I1.1649
Mohammad Almasi, M. Esmaili
Background: Research shows that prostate cancer ranks second among the top five most common cancers in men. It has been confirmed that when circulating Prostate Specific Antigen (PSA) transcripts are successfully detected, prostate cancer cells can be diagnosed at an early stage. A reverse transcriptase loop-mediated isothermal amplification (RT-LAMP) assay was developed and compared to reverse transcriptase polymerase chain reaction (RT-PCR) assay for detection of PSA. Methods: 47 patients, including 30 patients with prostate cancer, 15 with Benign Prostate Hyperplasia (BPH) and 2 healthy subjects as negative controls were included in this study. The prostate cancer cell lines (PC3 and LNCaP) of two patients were included in the study as positive controls. Next, RNA was extracted from fresh samples and a first strand cDNA synthesis kit was applied for the synthesis of cDNA. The human prostate specific antigen gene was used to design specific primers. Results: The results indicated that the control subjects and participants suffering from BPH were not positive. 13 out of 15 (86.6%) patients suffering from localized cancer were PSA positive. PSA positive results were observed among all 15 metastatic patients and positive controls (100%). RT-LAMP is an advantageous method because it is highly sensitive (1000-fold), quite cheap, user-friendly, and safe; in addition, it can be quickly performed by visual detection using GineFinderTM dye in a water bath. Conclusion: RT-LAMP technique can be simply and reliably applied with the aid of basic instruments, and its results can be visually inspected in laboratory studies.
背景:研究表明,前列腺癌在男性最常见的五大癌症中排名第二。已经证实,当循环前列腺特异性抗原(PSA)转录物被成功检测到时,可以在早期诊断前列腺癌细胞。建立了一种逆转录酶环介导的等温扩增(RT-LAMP)检测方法,并将其与逆转录酶聚合酶链反应(RT-PCR)检测PSA进行了比较。方法:选取47例患者,其中前列腺癌患者30例,良性前列腺增生(BPH)患者15例,健康对照2例。将2例患者的前列腺癌细胞系(PC3和LNCaP)作为阳性对照纳入研究。然后,从新鲜样品中提取RNA,使用第一链cDNA合成试剂盒进行cDNA合成。采用人前列腺特异性抗原基因设计特异性引物。结果:对照组和BPH患者均无阳性反应。15例局限性癌患者中有13例(86.6%)PSA阳性。所有15例转移患者和阳性对照(100%)均观察到PSA阳性结果。RT-LAMP是一种有利的方法,因为它具有高灵敏度(1000倍),相当便宜,用户友好且安全;此外,可以使用GineFinderTM染料在水浴中快速进行视觉检测。结论:在基础仪器的辅助下,RT-LAMP技术应用简单、可靠,实验结果可直观检验。
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引用次数: 0
Reduced Expression Levels of the MST1 gene in the Peripheral Blood of Patients with Prostate Cancer 前列腺癌患者外周血中MST1基因表达水平的降低
Pub Date : 2019-01-06 DOI: 10.18502/BCCR.V11I1.1648
Fariba Karimian, M. Sahmani, Amirhosein Maali, T. Farivar, A. Karimi, M. Azad
Background: Prostate cancer (PC) is the second most common malignancy among men, accounting for 12.5% of all cancers. The development of molecular studies (such as RNA expression analysis) aids the characterization of this cancer, the development of new targets for therapy, and the introduction of novel prognostic and diagnostic biomarkers. Recent studies have confirmed Mammalian Sterile 20-Like kinase (MST1) as a tumor suppressor gene, which has been introduced as a biomarker for some specific cancers. In this study, we focus on MST1 expression levels in the WBC of PC patients, due to the inheritance pattern of PC. Methods: This case-control study was conducted in two groups (20 patients with PC and 20 healthy individuals). After RNA extraction and cDNA synthesis, quantitative Real-Time PCR was done in order to determine the MST1 expression level. GAPDH was selected as an internal control gene. Statistical analysis was performed using “Rotor-Gene Q series software 2.3.1” and “Rest 2.0.13 software”. Results: This study, carried out on 20 PC patients aged 50-70 and 20 healthy individuals shows that MST1 expression level in the WBC samples of PC patients is approximately 62% lower compared to normal individuals (P<0.01). Conclusion: Introducing the reduced expression level of MST1 as a prostate cancer biomarker requires complementary research. However, in this study, biomarker validation and potential of MST1 has been approved.
背景:前列腺癌(PC)是男性第二常见的恶性肿瘤,占所有癌症的12.5%。分子研究(如RNA表达分析)的发展有助于这种癌症的特征,新的治疗靶点的发展,以及新的预后和诊断生物标志物的引入。近年来的研究证实,哺乳动物不育20样激酶(MST1)是一种肿瘤抑制基因,已被引入作为某些特定癌症的生物标志物。在本研究中,由于PC的遗传模式,我们关注的是MST1在PC患者白细胞中的表达水平。方法:本研究分为两组,分别为20例PC患者和20例健康人。提取RNA和合成cDNA后,进行实时荧光定量PCR检测MST1的表达水平。选择GAPDH作为内控基因。采用“Rotor-Gene Q系列软件2.3.1”和“Rest 2.0.13软件”进行统计分析。结果:本研究对20例50 ~ 70岁的PC患者和20例健康人进行了研究,结果显示,PC患者WBC样本中MST1表达水平比正常人低约62% (P<0.01)。结论:引入MST1的低表达水平作为前列腺癌的生物标志物需要补充研究。然而,在本研究中,MST1的生物标志物验证和潜力已经得到认可。
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引用次数: 0
BT-474 Breast Cancer Cell Apoptosis Induced by Crocin, a Saffron Carotenoid 藏红花类胡萝卜素藏红花素诱导BT-474乳腺癌细胞凋亡
Pub Date : 2019-01-02 DOI: 10.18502/BCCR.V11I1.1646
Nassim Faridi, H. Heidarzadeh, M. Mohagheghi, S. Z. Bathaie
Background: Saffron carotenoids have been known as powerful phytochemicals in breast cancer treatment. The purpose of this study was to investigate the anti-cancer properties of an important saffron carotenoid, crocin, on BT-474 which is a known HER2+ breast cancer cell line. Methods: The effect of crocin on cell viability was investigated using MTT assay. Apoptosis induction was studied via flow cytometry and Western blotting of caspase-9 and cleaved caspase-9. Involvement of unfolded protein response (UPR) was also investigated via RT-PCR study of the XBP1 gene. Results: The results showed that crocin treatment decreases the viability of BT-474 cells and induces early and late apoptosis in these cells. The mechanism of crocin action was through the induction of caspase-9 expression and cleavage. Furthermore, we found that crocin induced XBP1 gene splicing in these cells. Conclusion: The present study provides important evidence that crocin induces apoptosis in BT-474 cells. In addition, the activation of UPR may play a role in the anticancer effects of crocin.
背景:藏红花类胡萝卜素被认为是治疗乳腺癌的有效植物化学物质。本研究的目的是研究一种重要的藏红花类胡萝卜素藏红花素对已知HER2+乳腺癌细胞系BT-474的抗癌特性。方法:采用MTT法研究藏红花素对细胞活力的影响。通过流式细胞术和Western blot检测caspase-9和cleaved - caspase-9对细胞凋亡的诱导作用。通过RT-PCR研究XBP1基因的未折叠蛋白反应(UPR)参与情况。结果:藏红花素可降低BT-474细胞活力,诱导早期和晚期细胞凋亡。藏红花素的作用机制是通过诱导caspase-9的表达和裂解。此外,我们发现藏红花素在这些细胞中诱导XBP1基因剪接。结论:本研究为藏红花素诱导BT-474细胞凋亡提供了重要证据。此外,UPR的激活可能在藏红花素的抗癌作用中发挥作用。
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引用次数: 8
A Review on the Application of In Vitro and In Vivo Models of Cancerous Tumors for the Study of the Hyperthermia Effect 体外和体内肿瘤模型在热疗效应研究中的应用综述
Pub Date : 2019-01-02 DOI: 10.18502/BCCR.V11I1.1653
Zahra Zahedi-Tabar, S. Bagheri‐Khoulenjani, S. Amanpour, H. Mirzadeh
Hyperthermia is a novel method for cancer therapy. To have the best control when heating tissues in hyperthermia, the use of magnetic nanoparticles is suggested. The local control of heat is very important in this technique, to prevent the damage of healthy tissues around the tumor, and therefore it is necessary to measure changes in temperature to determine the optimum conditions in which hyperthermia can create the desired results. The type and concentration of nanoparticles and nanoparticle distribution within the cancerous tissue are key factors affecting temperature distribution throughout the hyperthermia process. One of the main factors influencing nanoparticle distribution is the characteristics of the diffusion media, such as chemical composition, morphological and mechanical features, all of which affect the diffusion of nanoparticles at the cancer site. In this review, the most common in vitro and in vivo media and their influence on the results of hyperthermia are discussed. We also mention in silico as a computational model. Buffer solutions, cell cultures, microfluids, dead tissues and animal models are some of the in vitro media that are discussed in this review paper. In addition, some of the animal models used for hyperthermia will be mentioned.
热疗是一种治疗癌症的新方法。为了在热疗中加热组织时获得最佳控制,建议使用磁性纳米颗粒。局部热控制在该技术中非常重要,以防止肿瘤周围健康组织的损伤,因此有必要测量温度的变化,以确定热疗可以产生预期结果的最佳条件。在整个热疗过程中,纳米颗粒的类型和浓度以及纳米颗粒在癌组织内的分布是影响温度分布的关键因素。影响纳米颗粒分布的主要因素之一是扩散介质的特性,如化学成分、形态和力学特征,这些都影响纳米颗粒在肿瘤部位的扩散。本文综述了最常见的体外和体内介质及其对热疗结果的影响。我们也提到了计算机模型。缓冲液、细胞培养物、微液、死亡组织和动物模型是本文讨论的一些体外培养基。此外,还将提到一些用于热疗的动物模型。
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引用次数: 5
Comparison of Clinical Practice Guidelines for the Assessment and Management of Cutaneous Melanoma (Literature Review) 皮肤黑色素瘤评估与治疗临床实践指南的比较(文献综述)
Pub Date : 2019-01-02 DOI: 10.18502/BCCR.V11I1.1652
Hossein Gandomkar, M. S. Seyyedsalehi, K. Zendehdel, Abolfazl Salari, Mohammad Shirkhoda
Evidence shows that there has been an increasing incidence of melanoma cancer in Iran, especially among the young population, which has led to increased mortality, disability and disablement, mostly due to the complications of disease and treatment. New treatments such as targeted therapy are extremely costly, and their results are not clear. The objective of this study is to review different current guidelines for the management of cutaneous melanoma cancer and discuss the differences in the various phases of patient assessment (prevention, risk factors, genetic assessment, clinical diagnosis, biopsy, staging, treatment and follow-up, pediatric melanoma, melanoma during pregnancy, and the necessity of social and mental support for melanoma patients). Then, based on the results, we will prepare a national guideline for the management of cutaneous melanoma in accordance with the prevailing conditions in Iran.
有证据表明,在伊朗,特别是在年轻人口中,黑色素瘤的发病率不断增加,这导致死亡率、残疾和残疾增加,主要是由于疾病和治疗的并发症。新的治疗方法,如靶向治疗非常昂贵,其效果尚不清楚。本研究的目的是回顾目前不同的皮肤黑色素瘤癌症管理指南,并讨论患者评估的各个阶段(预防、危险因素、遗传评估、临床诊断、活检、分期、治疗和随访、儿科黑色素瘤、妊娠期间黑色素瘤以及黑色素瘤患者社会和精神支持的必要性)的差异。然后,根据结果,我们将根据伊朗的普遍情况准备一份皮肤黑色素瘤管理的国家指南。
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引用次数: 1
Cancer Statistics in I.R. Iran in 2018 2018年伊朗癌症统计数据
Pub Date : 2019-01-02 DOI: 10.18502/BCCR.V11I1.1645
K. Zendehdel
The article's abstract is no available.
这篇文章的摘要找不到。
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引用次数: 22
A Proposed Model to Establish the PGD Technique for Carriers of BRCA1/2 Gene Mutations in a Diagnostic Laboratory 在诊断实验室建立BRCA1/2基因突变携带者PGD技术的建议模型
Pub Date : 2019-01-02 DOI: 10.18502/BCCR.V11I1.1647
E. Ebrahimi, R. Shirkoohi, M. Abiri, S. Sabeghi, Kiyana sadat Fatemi, S. Bagheri, S. Zeinali, S. Amanpour
Background: Pre-implantation Genetic Diagnosis (PGD) has recently been introduced as a reproductive choice for individuals who carry a disease-causing BRCA1/2 mutation. Since this technology has not yet been launched for patients at the Cancer Institute of Imam Khomeini Hospital harboring gene mutations that predispose patients to breast cancer, this study aimed to introduce a PGD-based model using a single cell lymphocyte instead of an embryonic blastomere. Methods: Two affected and unrelated women with a known mutation in BRCA1/2 were enrolled in this study. Each patient (together with her siblings) was considered as an embryo derived from a hypothetical couple. Blood samples were collected from these individuals as well as their parents. Linkage analysis was performed. Following this process, a mutation-free individual and a mutation carrier was selected from the first and second family, respectively. A single lymphocyte was then extracted from their freshly taken peripheral blood, and afterwards Nested Multiplex PCR was performed. Results: PGD confirmed that the individual from the first family is free of a mutation and the second one is a pathogenic mutation carrier. Conclusion: Our results suggested that PGD is a viable choice to offer to families with "Hereditary Breast Cancer Syndrome", who have been diagnosed with a known pathogenic mutation. Our introduced model can be used as a possible option by other laboratories that are planning to launch this technology.
背景:植入前遗传学诊断(PGD)最近被引入作为携带致病BRCA1/2突变个体的生殖选择。由于这项技术还没有在伊玛目霍梅尼医院癌症研究所的患者身上应用,这些患者携带易患乳腺癌的基因突变,因此这项研究旨在引入一种基于pgd的模型,使用单细胞淋巴细胞而不是胚胎卵裂球。方法:本研究纳入了两名已知BRCA1/2突变的受影响且不相关的女性。每个病人(连同她的兄弟姐妹)都被认为是来自一对假想夫妇的胚胎。从这些人以及他们的父母身上采集了血液样本。进行连锁分析。在此过程中,分别从第一家族和第二家族中选择一个无突变个体和一个突变携带者。然后从新鲜采集的外周血中提取单个淋巴细胞,然后进行巢式多重PCR。结果:PGD证实第一家族个体无突变,第二家族个体为致病突变携带者。结论:我们的研究结果表明,PGD是一个可行的选择,提供给“遗传性乳腺癌综合征”的家庭,谁已被诊断为已知的致病突变。我们介绍的模型可以作为其他计划推出这项技术的实验室的可能选择。
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Basic & Clinical Cancer Research
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