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An Interesting Case Report of Frontal Sinus Keratocyst 额窦角化囊肿1例
Pub Date : 2019-10-23 DOI: 10.5539/jmbr.v9n1p100
A. Mohebbi, Mohammad Aghajanpour
Purpose: To report an unusual case of frontal sinus keratocyst. Case Report: A 31 year old woman presented with a history of swollen right eye and visual field impairment. The ophthalmological examination revealed right superior eyelid edema and some degrees of proptosis. CT scan with iodine injection evidenced the opacification of the right frontal sinus with superior orbital wall lysis. Complete endoscopic surgical resection of a mass containing foul smelling keratin material was performed via Draf type III. The patient became symptomatic after 6 years. Imaging studies showed neo- osteogenesis in the far lateral end of right frontal sinus. Frontal trephination was done and the remnant of keratocyst was removed and the septum interfacing the cell and the right frontal sinus was walled down entirely. Conclusion: Although frontal sinus keratocyst is benign but can spread to the surrounding structures leading to several complications. Therefore, complete surgical resection is necessary to avoid recurrence.
目的:报告一例罕见的额窦角化囊肿。病例报告:一名31岁女性,有右眼肿胀和视野损害史。眼科检查发现右上眼睑水肿及有一定程度的突出。CT扫描碘注入证实右额窦混浊,眶上壁溶解。完整的内镜手术切除含有恶臭角蛋白物质的肿块,通过draft type III进行。患者6年后出现症状。影像学检查显示右侧额窦远外侧端有新生骨形成。做了额部穿刺,角化囊肿的残余被移除,连接细胞和右额窦的隔膜被完全封闭。结论:额窦角化囊肿虽为良性,但可扩散至周围结构,引起多种并发症。因此,完全手术切除是必要的,以避免复发。
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引用次数: 0
Evaluation of The Improvement of Clinical and Radiological Scores with Doxycycline in the Treatment of Nasal Polyposis: A Randomized Double Blind Clinical Trial 多西环素治疗鼻息肉病的临床和影像学评分改善评价:一项随机双盲临床试验
Pub Date : 2019-10-23 DOI: 10.5539/jmbr.v9n1p142
A. Mohebbi, Mohammad Aghajanpour, H. Ghanbari, Zhila Mohammadi Azar, Ahmad Alaghehband, F. Safdarian
Although several trials have been proposed for nasal polyposis (NP) treatment, but no standard guideline has been declared yet. We evaluated the effect of doxycycline on NP treatment. In a double- blind randomized clinical trial, 48 patients with bilateral nasal polyposis were assigned to receive doxycycline and placebo capsules for 8 weeks and were followed monthly for 4 months. Patients were assessed for polyp size, severity of symptoms and quality of life according to the endoscopic examination, VAS score, CT scanning and SNOT-22 respectively. polyp size reduced significantly after 8 weeks of treatment in the drug group. The quality of life score has raised significantly after 2 months of treatment with doxycycline. By giving –up the drug, severity of symptoms started to grow-up after 2 months. Although a course of doxycycline improved nasal symptoms, polyp size and CT findings, but further studies with more patients and longer follow-up course are required to establish the foundation to recommend this drug as an important treatment in NP.
尽管已经提出了几项治疗鼻息肉病的试验,但尚未宣布标准指南。我们评估了多西环素对NP治疗的影响。在一项双盲随机临床试验中,48名双侧鼻息肉病患者被分配接受多西环素和安慰剂胶囊治疗8周,并每月随访4个月。分别根据内镜检查、VAS评分、CT扫描和SNOT-22评估患者的息肉大小、症状严重程度和生活质量。药物组治疗8周后息肉大小明显缩小。多西环素治疗2个月后,生活质量评分显著提高。通过放弃药物,症状的严重程度在2个月后开始加重。尽管一个疗程的多西环素改善了鼻腔症状、息肉大小和CT检查结果,但需要对更多患者和更长的随访疗程进行进一步研究,以建立推荐该药物作为NP重要治疗药物的基础。
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引用次数: 1
The Association between Functional Polymorphisms of COX-2 and Serum PGE2 Level in ESCC Patients in North of Iran 伊朗北部ESCC患者COX-2功能多态性与血清PGE2水平的相关性
Pub Date : 2019-10-23 DOI: 10.5539/jmbr.v9n1p133
M. S. Sheshpoli, Safoura Khajeniazie, Masoud Khoshnia, N. Behnampour, M. Saeedi, A. Moradi
Background: Esophageal cancer is recognized as one of the most fatal diseases around the world. Many factors are involved in the development of esophageal cancer, including genetic factors and inflammation. Cyclooxygenase-2 (COX-2) and its downstream signaling are the most important proinflammatory factors contributing to cancer. The present study aimed to evaluate the relationship between the polymorphisms and expression of COX-2 and prostaglandin-E2 (PGE2) level in patients with esophageal squamous cell carcinoma (ESCC) in Golestan Province (Iran), situated on the “esophageal cancer belt”. Methods: In this case-control study, blood and biopsy samples were obtained from ESCC patients and healthy controls. The COX-2 polymorphisms for -1195, -1290, -765, and +8473 SNPs were assayed using PCR-RFLP assay, while the level of PGE2 was measured using an ELISA kit. In addition, real-time PCR assay and immunohistochemistry (IHC) were performed to assay mRNA and protein expression of COX-2, respectively. Results: An association was found between 8473TC genotype and risk of ESCC (OR= 5.417, P= 0.036). In addition, mRNA and protein expression of COX-2 in ESCC patients was higher than the controls (P=0.001 and P=0.048, respectively). Based on the findings, the level of PGE-2 was significantly higher in ESCC patients, compared to the controls (P= 0.045). However, ROC curve analysis revealed PGE2 is a weak biomarker for diagnosis of ESCC. There was a significant relationship between the level of PGE2 and 8473CC, 8473TC, -765CC, and -1290AA genotypes (P= 0.028, P= 0.022, P= 0.024, and P= 0.011, respectively). Conclusion: Based on our results, functional polymorphisms of COX-2 (8473CC, 8473TC, - 765CC, and -1290AA) increase PGE2 level and carriers of these polymorphisms might be more susceptible to ESCC.
背景:食管癌是世界上公认的最致命的疾病之一。许多因素与食管癌的发展有关,包括遗传因素和炎症。环氧合酶-2 (COX-2)及其下游信号是导致癌症的最重要的促炎因子。本研究旨在评估位于“食管癌带”的伊朗Golestan省食管鳞状细胞癌(ESCC)患者COX-2和前列腺素e2 (PGE2)多态性与表达的关系。方法:在本病例对照研究中,从ESCC患者和健康对照者中获得血液和活检样本。采用PCR-RFLP法检测-1195、-1290、-765和+8473 snp的COX-2多态性,采用ELISA试剂盒检测PGE2水平。采用实时荧光定量PCR法和免疫组化法分别检测COX-2 mRNA和蛋白的表达。结果:8473TC基因型与ESCC发病风险存在相关性(OR= 5.417, P= 0.036)。此外,ESCC患者COX-2 mRNA和蛋白表达均高于对照组(P=0.001和P=0.048)。根据研究结果,ESCC患者的PGE-2水平明显高于对照组(P= 0.045)。然而,ROC曲线分析显示PGE2是ESCC诊断的弱生物标志物。PGE2水平与8473CC、8473TC、-765CC、-1290AA基因型呈显著相关(P= 0.028、P= 0.022、P= 0.024、P= 0.011)。结论:COX-2的功能多态性(8473CC、8473TC、- 765CC和- 1290aa)可使PGE2水平升高,这些多态性携带者可能更容易发生ESCC。
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引用次数: 2
Association between Severity of Low Back Pain (LBP) and Magnetic Resonance Imaging Pathologies in Patients with Acute LBP 急性腰痛患者的下腰痛严重程度与磁共振成像病理的关系
Pub Date : 2019-10-23 DOI: 10.5539/jmbr.v9n1p93
Mohammadreza Mahabadi Mahabad, B. Sartip
Background and Objectives: Low Back Pain (LBP) is a common health problem that affects people worldwide, and about 15% of Iranians. It imposes high costs to societies and requires great attention. Magnetic Resonance Imaging (MRI) is considered a reliable and accurate diagnostic tool, however some studies have questioned the appropriateness of MRI in LBP. Thus, this study aimed to evaluate the relationship between the intensity of LBP and positive findings in MRI, in patients with acute LBP. Materials and Methods: A cross-sectional study was performed on all patients, who reported less than four weeks of LBP and were referred to the radiology center of Shafa-e-Yahyaeian hospital, ranged from March to July, 2014, to perform MRI. Data collected included demographics and pain characteristics, in addition to an Oswestry Disability Index questionnaire. MRI pathologies were distinguished by two spinal surgeons and one radiologist. Data was analyzed using the SPSS software. Results: A total of 200 patients were enrolled in this study with a mean age of 41.78 years. Nearly half (48%) of the studied patients had positive MRI findings on L4-L5, and NFS and disc bulging (42.5%, and 38%, respectively) were the most common pathologies, while 11.5% of patients had normal MRIs. The mean ODI was highest in patients with vertebral body fracture, and disc herniation and lowest in hemangioma. Conclusion: A noticeable percentage of patients demonstrated a high ODI score, but MRI findings were in significant association with age of patients, indicating that patients with acute LBP do not require MRI immediately. Using the ODI questionnaire can help us towards a better diagnostic approach.
背景和目的:腰痛(LBP)是一种常见的健康问题,影响着全世界的人,约15%的伊朗人。它给社会带来了高昂的成本,需要高度重视。磁共振成像(MRI)被认为是一种可靠和准确的诊断工具,但一些研究对MRI在LBP中的适用性提出了质疑。因此,本研究旨在评估急性LBP患者的LBP强度与MRI阳性结果之间的关系。材料和方法:对2014年3月至7月期间所有报告LBP不到四周并被转诊至沙法雅雅医院放射中心进行MRI检查的患者进行横断面研究。收集的数据包括人口统计和疼痛特征,以及奥斯韦斯特里残疾指数问卷。两名脊椎外科医生和一名放射科医生对MRI病理进行了区分。使用SPSS软件对数据进行分析。结果:共有200名患者参与本研究,平均年龄为41.78岁。近一半(48%)的研究患者L4-L5的MRI表现呈阳性,NFS和椎间盘膨出(分别为42.5%和38%)是最常见的病理,11.5%的患者MRI正常。椎体骨折、椎间盘突出患者的平均ODI最高,血管瘤患者的ODI最低。结论:有相当比例的患者表现出高ODI评分,但MRI检查结果与患者年龄显著相关,表明急性LBP患者不需要立即进行MRI检查。使用ODI问卷可以帮助我们找到更好的诊断方法。
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引用次数: 0
Anti-Proliferative and Apoptotic Activity of Rumex obtusifolius seed’s Hydroalcoholicextract on Human Colon Cancer Cell Line “SW480” 芦笋水醇提取物对人结肠癌细胞株SW480的抗增殖和凋亡作用
Pub Date : 2019-10-23 DOI: 10.5539/jmbr.v9n1p111
Ladan Badeei Pourtaghi, F. Bineshian, B. S. Moghadam, R. Ghorbani, H. Nazari
Cancer is considered a serious threat to human health thatcolon cancer is the third most common cancer in the world. Colon cancer has undergone significant growth worldwide in recent years, and many people die every year as a result of this disease, which its treatment is a major challenge for researchers. In this study, we investigated the effect of anti-proliferative and apoptotic activity seed’s hydroalcoholic extract of Rumex obtusifolius, “is native to Semnan's northern region” on the human colon cancer cell line, SW480. The SW480 human colon cancer cell line were cultured in RPMI 1640 cell culture containing 10% Fetal bovine Serum and 1% Penicillin and Streptomycin antibiotics and incubated with a relative humidity of 95%, carbon dioxide 5% at 37°C. The SW480 cancer cell line was cultured in 48 and 96 well plates and treated with different concentrations of seeds hydroalcoholic extract of Rumex obtusifolius (20/40/80/160/320 micrograms/ml) for evaluation of cell viability by Trypan blue exclusion method and MTT assay. A non-treated group was used as control and a treated group with DMSO was used as solvent in solution of powdered extract as vehicle as well as positive control groups. Also, cell apoptosis assessment was performed by Propideum iodide/Annexin V test “Flowcytometry”and DNA fragmentation analysis “Agaros electrophoresis”. Seed hydroalcoholic extract caused cell death at concentrations of 40, 80, 160 and 320μg/ml, which the anticancer effect trend to increase significantly from 80μg/ml. The effect of R. obtusifolius seed extract even has more anti-cancer effect in 160 and 320μg/ml than cells which is treated to 5FU as a positive control groups. Seed hydroalcoholic extract reduced cell viability in proportion concentration. The effect of anticancer activity of seed extract trend to increase from 40μg/ml but it was shown effective concentrations for inhibiting of the cells growth were 160, 320μg/ml in 48 hr incubation time and 80, 160 and 320μg/ml in 72 hr incubation time. Also, the effect of this extract at concentrations of 160 and 320μg/ml with control group is not significant which have more cytotoxicity and even extract can have a significant effect on decreasing the survival of the SW480 cells. The data generated by flow cytometry are shown that colon cancer cells trend to necrosis and apoptotic pathway from 40μg/ml and increased significantly entrance to apoptotic pathway from 80μg/ml which is confirm the Trypan blue and MTT assay tests. Since the appearance of the DNA fragmentation, which precedes the bioavailability change, is characteristic to apoptosis, the extracts were considered to be apoptosis-inducers. The ability to inhibit growth and induction of apoptosis in SW480 cancer cells is a concentration- and time dependent manner. These results indicated that the induction of apoptosis at least partly mediates their cytotoxic activity which is necessary down further study for elucidation apoptotic signaling path
癌症被认为是对人类健康的严重威胁,癌症是世界上第三大最常见的癌症。近年来,癌症在全球范围内大幅增长,每年都有许多人死于这种疾病,其治疗是研究人员面临的一大挑战。在本研究中,我们研究了“原产于塞姆南北部地区”的具有抗增殖和凋亡活性的钝壳酸模种子的水醇提取物对人类结肠癌癌症细胞系SW480的影响。SW480人结肠癌癌症细胞系在含有10%胎牛血清和1%青霉素和链霉素抗生素的RPMI 1640细胞培养物中培养,并在相对湿度为95%、二氧化碳为5%、温度为37°C的条件下孵育。将SW480癌症细胞系在48和96孔板中培养,并用不同浓度的钝壳酸模种子水醇提取物(20/40/80/160/320微克/毫升)处理,以通过台盼蓝排除法和MTT测定评估细胞活力。未处理组用作对照,用DMSO处理组用作粉末提取物溶液中的溶剂作为载体以及阳性对照组。此外,通过碘化丙啶/膜联蛋白V试验“流式细胞术”和DNA片段分析“琼脂电泳”进行细胞凋亡评估。种子水醇提取物在40、80、160和320μg/ml浓度下引起细胞死亡,其抗癌作用从80μg/ml开始显著增加。钝叶薯蓣种子提取物在160和320μg/ml中的抗癌作用甚至比用5FU作为阳性对照组处理的细胞更大。种子水醇提取物按比例浓度降低了细胞活力。种子提取物的抗癌活性有从40μg/ml增加的趋势,但在48小时培养时间内抑制细胞生长的有效浓度分别为160、320μg/ml和80、160和320μg/ml。此外,该提取物在160和320μg/ml浓度下与对照组的作用并不显著,对照组具有更大的细胞毒性,甚至提取物对降低SW480细胞的存活率也有显著影响。流式细胞术产生的数据显示,结肠癌癌症细胞从40μg/ml开始坏死和凋亡途径,并从80μg/ml开始显著增加凋亡途径的进入,这证实了台盼蓝和MTT检测。由于在生物利用度变化之前出现的DNA片段是细胞凋亡的特征,因此这些提取物被认为是细胞凋亡诱导剂。抑制SW480癌症细胞生长和诱导细胞凋亡的能力是浓度和时间依赖性的。这些结果表明,细胞凋亡的诱导至少部分介导了它们的细胞毒性活性,这对于阐明细胞凋亡信号通路的进一步研究是必要的。
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引用次数: 0
Mineral Composition of Sapropelles of Lakes of the Right Bank of the Ob River (Middle Ob Region) 鄂毕河右岸(鄂毕中地区)湖泊锯末矿物组成
Pub Date : 2019-10-17 DOI: 10.5539/jmbr.v9n1p77
M. Sartakov, E. Osnitsky, K. Kudrin, N. S. Larina
The objective of this work is to study the mineral composition of bottom sediments of eight small lakes located on the right bank of the Ob River (Western Siberia) in the Surgut region of the Khanty-Mansiysk Autonomous Okrug - Yugra. The studies were carried out using wave dispersive X-ray fluorescence (WDFR) spectroscopy. The content of organic substances, ash, and oxides in the ash in the samples was determined. Based on these data, the studied bottom sediments were classified. The bottom sediments of Lake S-1 are siltstone sands, lakes Vach Lor and S-189 - weakly sapropelic siltstone sands, lakes S-5, S-6, S-3, S-89, and S-294 - typical sapropels. The article presents the content of the main elements in the ash of the studied samples.
本工作的目的是研究鄂毕河(西西伯利亚)右岸的八个小湖的底部沉积物的矿物成分,这些小湖位于汉特-曼西耶斯克自治区的苏尔古特地区。这些研究是使用波散射X射线荧光(WDFR)光谱进行的。测定了样品中灰分中有机物、灰分和氧化物的含量。根据这些数据,对所研究的海底沉积物进行了分类。S-1湖的底部沉积物为粉砂岩,Vach Lor湖和S-189湖为弱腐泥质粉砂岩,S-5、S-6、S-3、S-89和S-294湖为典型腐泥。本文介绍了研究样品灰分中主要元素的含量。
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引用次数: 1
Penetrating Keratoplasty with a Preserved Donor Cornea in Veterinary Ophthalmology 兽医眼科保存供体角膜的穿透性角膜移植术
Pub Date : 2019-10-17 DOI: 10.5539/jmbr.v9n1p71
B. Usha, S. Kontsevaya, V. Lutsay, I. M. Nityaga, Uliyana E. Lukashina
The present article describes the penetrating keratoplasty using the technique of rehydration of donor cornea dehydrated over silica gel, as well as complications that can arise. The indications included corneal ulcers, descemetocoele, corneal sequestrum and corneal perforation. 37 (88.37%) out of 43 corneal transplants had a favorable outcome in surgeries with complete excision of abnormal tissues. In 5 cases (11.63%), the authors faced such complications as suture failure, formation of anterior synechias, incomplete epithelization after the suture removal, and transplant swelling reversed with the preservation of eye optical functions, and secondary glaucoma in the late postoperative period that ended up in eyeball endoprosthesis transplantation. Due to a high rate of efficiency of the proposed method, penetrating keratoplasty with rehydrated grafts can be recommended for the treatment in case of medical emergency experienced by cats and dogs.
本文介绍了使用硅胶脱水供体角膜再水化技术进行穿透性角膜移植术,以及可能出现的并发症。适应症包括角膜溃疡、吐丝痛、角膜隔离和角膜穿孔。在43例角膜移植中,37例(88.37%)在完全切除异常组织的手术中有良好的结果。在5例(11.63%)的病例中,作者面临着缝合失败、前粘连形成、缝线取出后上皮化不完全、移植肿胀在保留眼睛光学功能的情况下逆转等并发症,以及术后晚期继发性青光眼,最终导致眼球内假体移植。由于所提出的方法有很高的效率,在猫和狗经历医疗紧急情况时,可以推荐使用水合移植物的穿透性角膜移植术进行治疗。
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引用次数: 0
Evaluation of Fractional CO2 Laser Treatment Efficacy and Comparison to Vaginal Conjugated Estrogen Cream in Postmenopausal Women with Vulvovaginal Atrophy: A Randomized Clinical Trial 分数CO2激光治疗外阴阴道萎缩的疗效评价及阴道结合雌激素乳膏的比较:一项随机临床试验
Pub Date : 2019-07-11 DOI: 10.5539/jmbr.v9n1p67
M. Najafian, K. Shojaei, Saadat Hajatzadeh
Background: Vulvovaginal atrophy is common and bothersome among postmenopausal women. Hence in this study, the fractional CO2 laser treatment efficacy was compared with vaginal conjugated estrogen cream in postmenopausal women with vulvovaginal atrophy was assessed. Materials and Methods: In this randomized clinical trial, 130 consecutive postmenopausal women with vulvovaginal atrophy attending to urogynecologic clinic in Imam-Khomeini hospital in Ahvaz in 2015 were enrolled and were randomly assigned to receive either fractional CO2 laser treatment or vaginal conjugated estrogen cream. The improvement of vulvovaginal atrophy symptoms, sexual satisfaction and function were compared across the groups after 12 weeks. Results: There improvement of vulvovaginal atrophy symptoms, sexual satisfaction, and function were 86.2%, 87.7%, and 87.7%, respectively in laser group and 53.8%, 52.3%, and 52.3%, respectively in primarin group showing statistically significant differences (P=0.0001). There were no side effects. Conclusion: Totally, according to obtained results, it may be concluded that efficacy of fractional CO2 laser was higher than vaginal conjugated estrogen cream in postmenopausal women with vulvovaginal atrophy.
背景:外阴阴道萎缩在绝经后妇女中是常见和令人烦恼的。因此,在本研究中,我们比较了分数CO2激光与阴道结合雌激素乳膏治疗绝经后外阴阴道萎缩的疗效。材料与方法:本随机临床试验纳入2015年在阿瓦士伊玛目-霍梅尼医院泌尿妇科门诊连续就诊的130名绝经后外阴阴道萎缩妇女,随机分配接受CO2激光分式治疗或阴道结合雌激素乳膏。12周后比较两组患者外阴阴道萎缩症状、性满意度和性功能的改善情况。结果:激光组外阴阴道萎缩症状、性满意度、功能改善率分别为86.2%、87.7%、87.7%,原发素组分别为53.8%、52.3%、52.3%,差异有统计学意义(P=0.0001)。没有任何副作用。结论:总的来说,根据所获得的结果,可以得出结论,分数CO2激光治疗外阴阴道萎缩妇女的疗效高于阴道结合雌激素乳膏。
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引用次数: 0
Immunophenotype Study in Children with Leukemia and Its Relationship with Relapse in Ahvaz Shafa Hospital from 2013 to 2018 2013年至2018年Ahvaz Shafa医院白血病儿童免疫表型研究及其与复发的关系
Pub Date : 2019-06-21 DOI: 10.5539/JMBR.V9N1P61
Arash Alghasi, Jamshid Safdarian
Introduction: Acute lymphoblastic leukemia (ALL) is one of the most common cancers in children. Since the identification of patients immunophenotypes is effective for disease diagnose and prognosis, and due to very few studies in Iran, especially Khuzestan province, the aim of this study was to investigate the immunophenotype of children with leukemia and its association with recurrence in Ahvaz Shafa Hospital from 2013 to 2019. Methods: This is a retrospective study that was conducted in patients referring to Ahvaz Shafa Hospital during the years 2013 to 2019. Demographic data including age, gender, height, weight, leukocyte count, flow cytometry and other laboratory findings were collected and analyzed by version 22 SPSS statistical software. Results: The mean age of the patients was 7.59 ± 3.94 years and the sex of 51 (52%) were female. Immunophenotype of 81 patients (82.7%) was Pre B cell, 4 patients (4.1%) was Pro-B Cell, 5 patients (5.1%) was Pro-T Cell, and 8 patients (8.2%) was T Cells. 87 patients (88.8%) recovered and 11 patients (11.2%) had recurrence. Only 11 patients with Pre B cell (13.6%) had recurrence, but in other immunophenotypes, 100% of patients had remission, but this difference was not statistically significant (p = 0.46). There was no statistically significant difference between the prevalence of phenotypes in female and male sexes (p = 0.76). The incidence of recurrence was 9.8% in female patients and 12.8% in male patients, which was not statistically significant (p = 0.64). Conclusion: The results of this study showed that preB cell immunophenotypes with the prevalence of 82.7% had the highest frequency in acute lymphoblastic leukemia, and the incidence of recurrence in patients was 11.2%. Also, patients with other immunophenotypes did not recurrence, so his finding may have been because of insufficent patients to study and compare.
简介:急性淋巴细胞白血病(ALL)是儿童最常见的癌症之一。由于患者免疫表型的识别对疾病诊断和预后有效,并且由于伊朗,特别是胡齐斯坦省的研究很少,本研究的目的是调查2013年至2019年Ahvaz Shafa医院白血病儿童的免疫表型及其与复发的关系。方法:这是一项回顾性研究,在2013年至2019年期间对Ahvaz Shafa医院的患者进行。收集人口统计学数据,包括年龄、性别、身高、体重、白细胞计数、流式细胞术和其他实验室检查结果,并使用SPSS 22版统计软件进行分析。结果:患者平均年龄7.59±3.94岁,女性51例(52%)。81名患者(82.7%)的免疫表型为前B细胞,4名患者(4.1%)为原B细胞,5名患者(5.1%)为前T细胞,8名患者(8.2%)为T细胞。87例(88.8%)痊愈,11例(11.2%)复发。只有11名Pre-B细胞患者(13.6%)复发,但在其他免疫表型中,100%的患者病情缓解,但这一差异没有统计学意义(p=0.46)。女性和男性表型的患病率没有统计学意义的差异(p=0.76)。复发发生率女性为9.8%,男性为12.8%,结论:preB细胞免疫表型在急性淋巴细胞白血病中的发生率最高,为82.7%,患者复发率为11.2%,因此,他的发现可能是因为患者不愿意进行研究和比较。
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引用次数: 0
Application of the 3'-Untranslated Region of Messenger RNA from Measles Virus Matrix Protein as an RNA Stabilizer: Implications in Pharmaceutical Biotechnology 麻疹病毒基质蛋白信使核糖核酸3'-非翻译区作为RNA稳定剂的应用:在药物生物技术中的意义
Pub Date : 2019-05-29 DOI: 10.5539/JMBR.V9N1P53
Marzieh Marzbany, F. Ghassemi, M. Rasekhian
BACKGROUND: The market for the use of recombinant proteins for medical applications has been increasing in recent years. In many cases including fast production of significant amounts of protein for research purposes, transient transfection is the method of choice. In this regard expression vectors are one of the decisive factors in the cost-effectiveness of the production process. The genetic elements found in the 3’untranslated region (UTR) of mRNA expressed by such vectors, play an essential role in determining its stability and thus in the efficiency of the process. METHODS: In this study, the 3'UTR of matrix protein from the Measles Virus (MV) was used to construct a reporter plasmid containing Enhanced Green Fleurocent Protein (EGFP). The reporter construct was transfected into three cell lines. The effect of 3'UTR on mRNA stability was evaluated by real-time PCR. Secondary structure of the mrna was predicted based on minimum free energy. 3'UTR was analyzed in silico for the presence of binding motifs for trans-acting elements with known effects on RNA stability. RESULTS: Addition of 3’UTR of MV matrix protein sequence to the 3’ end of the mRNA, increased the EGFP- mRNA stability in time and cell-dependent manner. Analysis for the presence of known cis-acting motifs in 3’UTR indicated the presence of two PABPC1 binding sites, an RNA-binding protein, known for its stability and translation enhancing effects. CONCLUSION: Our results verified the potential of the 3'UTR region of matrix protein mRNA for improvement of transient recombinant protein production and vector design for mammalian cell hosts.
背景:近年来,用于医学应用的重组蛋白的市场一直在增加。在许多情况下,包括为研究目的快速生产大量蛋白质,瞬时转染是首选方法。在这方面,表达载体是生产过程成本效益的决定性因素之一。在这种载体表达的信使核糖核酸的3’非翻译区(UTR)中发现的遗传元素在决定其稳定性以及该过程的效率方面发挥着重要作用。方法:利用麻疹病毒(MV)基质蛋白的3’UTR构建含有增强型绿色Fleurocent蛋白(EGFP)的报告质粒。将报告基因构建体转染到三个细胞系中。通过实时PCR评估3’UTR对mRNA稳定性的影响。基于最小自由能预测mrna的二级结构。在计算机上分析3’UTR是否存在对RNA稳定性具有已知影响的反式作用元件的结合基序。结果:在信使核糖核酸的3’端添加MV基质蛋白序列的3’UTR,使EGFP-信使核糖核酸具有时间和细胞依赖性的稳定性。对3’UTR中已知顺式作用基序存在的分析表明,存在两个PABPC1结合位点,一种RNA结合蛋白,以其稳定性和翻译增强作用而闻名。结论:我们的结果验证了基质蛋白信使核糖核酸3’UTR区在改善哺乳动物细胞宿主的瞬时重组蛋白生产和载体设计方面的潜力。
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引用次数: 0
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Journal of molecular biology research
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