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Initial Community Hospital Performance of Radioactive Seed Localization for Breast Cancer Patients 癌症患者放射性粒子定位在社区医院的初步表现
Pub Date : 2017-02-11 DOI: 10.5539/CCO.V6N1P51
J. Wheeler, Fang Liu
Purpose: To compare the positive margin rates for women with nonpalpable breast tumors who underwent breast conserving surgery with wire localization versus those with radioactive seed localization in a small community hospital and to compare the size of the corresponding breast specimens.Introduction: Wire localization (WL) has been the standard technique to assist in the removal of nonpalpable breast tumors for the past three decades for patients undergoing breast conserving surgery. Radioactive seed localization (RSL) is an alternative technique that provides advantages of patient comfort and scheduling convenience. There are numerous studies from large academic centers, but little information on how successfully this technique can be implemented in community hospitals.Methods:         Thirty-five patients who underwent WL between September 18, 2013 and December 10, 2014 were compared to 110 patients who underwent RSL between February 12, 2014 and December 16, 2015. Results: Three of the 35 WL patients (8.5%) had a positive margin compared to 14 of the 110 RSL patients (12.7%), but this difference was not statistically significant (p-value 0.763). The breast specimen weight had a geometric mean of 30.26 g for the WL patients and 32.78 g for the RSL patients, a difference of 8.3%, which was not statistically significant. Positive margin rates did not depend on the surgeon or the radiologist placing the I-125 localization seed.Conclusion: The RSL technique can be implemented in community hospitals with the expectation of having the same positive margin rates as reported from academic centers.
目的:比较在小型社区医院行保乳术的不可触及乳腺肿瘤患者行钢丝定位与放射性种子定位的阳性切缘率,并比较相应乳腺标本的大小。导读:钢丝定位(WL)一直是标准的技术,以协助去除不可触及的乳房肿瘤,在过去的三十年中,患者接受保乳手术。放射性种子定位(RSL)是一种替代技术,它提供了患者舒适和调度方便的优点。大型学术中心进行了大量的研究,但很少有关于这种技术在社区医院中如何成功实施的信息。方法:将2013年9月18日至2014年12月10日期间行WL的35例患者与2014年2月12日至2015年12月16日期间行RSL的110例患者进行比较。结果:35例WL患者中3例(8.5%)与110例RSL患者中14例(12.7%)的切缘呈阳性,但差异无统计学意义(p值0.763)。乳腺标本重量几何平均值WL组为30.26 g, RSL组为32.78 g,差异8.3%,差异无统计学意义。切缘阳性率不取决于外科医生或放射科医生放置I-125定位种子。结论:RSL技术可在社区医院实施,期望与学术中心报告的阳性边际率相同。
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引用次数: 0
Antineoplastons A10 and AS2-1 in the Treatment of Children with Optic Pathway Glioma: Final Report for Protocol BT-23 抗肿瘤药物A10和AS2-1治疗儿童视路胶质瘤:BT-23方案的最终报告
Pub Date : 2017-01-06 DOI: 10.5539/CCO.V6N1P25
S. Burzynski, T. Janicki, Gregory S. Burzynski
Protocol BT-23, a Phase II study, was performed to determine the efficacy and safety of combination Antineoplaston A10 and Antineoplaston AS2-1 (ANP) in children with an optic pathway glioma (OPG). Sixteen patients (12 males, 4 females) ages 1 to 16 years (median age 4.5 years) were treated. The patients received ANP, by intravenous infusion, six times daily (i.e., every four hours). The length of treatment extended from a minimum of 4.1 weeks to a maximum of 210.0 weeks. The median dosage of A10 was 8.07 g/kg/d while for AS2-1 itwas 0.39 g/kg/d. Patients’ best response to ANP was determined: 12.5% of this patient population achieved a complete response, 18.8% achieved a partial response, and 31.3% maintained stable disease. The median overall survival was 78.5 months (95% CI: 37.6-92.3) while median progression-free survival was 45.4 months (95% CI: 7.1-71.4). ANPwas associated with a12% incidence of Grade 3 and a12% incidence of Grade 4 adverse drug experiences (ADEs). There were no Grade 5 ADEs. Grade 3 ADEs included somnolence and elevated SGOT; Grade 4 ADEsincluded hypernatremia and hypokalemia. Long-term quality of life was excellent with no chronic toxicity identified. Children with an OPG respond very well to ANP with good efficacy and toxicity profiles.
协议BT-23是一项II期研究,旨在确定抗瘤素A10和抗瘤素AS2-1 (ANP)联合治疗视神经胶质瘤(OPG)儿童的有效性和安全性。16例患者(男性12例,女性4例),年龄1 ~ 16岁(中位年龄4.5岁)。患者通过静脉输注ANP,每天6次(即每4小时一次)。治疗时间从最短4.1周延长至最长210.0周。A10的中位剂量为8.07 g/kg/d, AS2-1的中位剂量为0.39 g/kg/d。确定了患者对ANP的最佳反应:12.5%的患者达到完全缓解,18.8%达到部分缓解,31.3%保持疾病稳定。中位总生存期为78.5个月(95% CI: 37.6-92.3),中位无进展生存期为45.4个月(95% CI: 7.1-71.4)。anp与3级和4级药物不良反应发生率分别为12%和12%。没有5级ade。3级不良反应包括嗜睡和SGOT升高;4级ad包括高钠血症和低钾血症。长期生活质量良好,未发现慢性毒性。OPG患儿对ANP反应良好,具有良好的疗效和毒性。
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引用次数: 3
Rare Case of Aggressive Angiomyxoma of the Vulva: A Case Report 外阴侵袭性血管粘液瘤1例
Pub Date : 2016-10-28 DOI: 10.5539/CCO.V6N1P8
G. Shanmugasundaram, S. Maharajan
Aggressive Angiomyxoma (AA) is a rare locally aggressive soft tissue tumor with high chance of local recurrence occuring in young women of reproductive age group. These neoplasms are characterized by a mixture of spindle or stellate cells in a loosely myxoid stroma with prominent vascular component containing large, thickwalled blood vessels. A 35 year old multiparous lady presented with right vulval swelling which was rapidly progressing in size. Local examination revealed a soft fleshy mass occupying whole of the right labia majora. In view of the rapidly enlarging lesion over a short duration, we suspected a soft tissue neoplasm and preceded with wide local excision of the mass with adequate margins in all dimensions, eventhough we did not have a preoperative tissue diagnosis. To our surprise, final histopathology was Aggressive Angiomyxoma (AA). The treatment of choice for Aggressive Angiomyxoma is wide local excision with negative margins and the same was done in our case. Recurrence of the tumor may be avoided by wide local excision with adequate margins. It is possibly a hormonally responsive neoplasm. Treatment with Gonadotropin-releasing hormone is an emerging therapy.Overall prognosis of AA is good.
侵袭性血管粘液瘤(AA)是一种罕见的局部侵袭性软组织肿瘤,多发于年轻育龄女性,局部复发率高。这些肿瘤的特征是松散黏液样基质中梭形或星状细胞的混合物,具有明显的血管成分,含有大而厚的血管。一个35岁的多胎妇女提出了右外阴肿胀是迅速扩大的大小。局部检查发现一软肉质肿块占据整个右大阴唇。鉴于病变在短时间内迅速扩大,我们怀疑是软组织肿瘤,尽管我们术前没有组织诊断,但我们还是对肿块进行了广泛的局部切除,在所有尺寸上都有足够的边缘。令我们惊讶的是,最终的组织病理学是侵袭性血管粘液瘤(AA)。侵袭性血管粘液瘤的治疗选择是广泛的负缘局部切除,我们的病例也是这样做的。肿瘤的复发可以通过广泛的局部切除来避免。它可能是一种激素反应性肿瘤。促性腺激素释放激素治疗是一种新兴的治疗方法。AA的整体预后良好。
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引用次数: 1
Verification of Balloon Integrity by Ultrasound Imaging in Accelerated Partial Breast Irradiation 加速乳腺部分照射中超声成像对球囊完整性的验证
Pub Date : 2016-10-26 DOI: 10.5539/CCO.V5N2P60
J. Christensen, M. Trombetta, O. Gayou
Purpose : An overview of the ultrasound imaging artifacts encountered in Mammosite balloon APBI is presented. Analysis of ultrasound measurement errors and the dosimetric impact of balloon leakage were used to determine whether clinically relevant changes in balloon size can be reliably detected. Methods : Ultrasound imaging of a Mammosite balloon phantom was performed to better understand measurement errors and accuracy. The dose to the prescription point as a function of balloon diameter was computed for different sized balloons. The results were compared to phantom measurements of balloon diameter versus filling volume to assess the dose change that would result from tissue moving inward with a shrinking balloon boundary. In APBI patients undergoing a course of 10 treatment fractions, the accuracy and variability of balloon size measured with ultrasound imaging was compared to CT. Results : Ultrasound artifacts combine to form a false image of the distal balloon boundary. Proper US probe orientation and choice of measurement point locations improved distance measurement accuracy. A 1 mm change in balloon diameter is measurable with ±0.1 mm error and corresponds to <4% change in dose 1 cm from the balloon. Measurement errors relative to CT averaged less than 1.4 mm and variability (standard deviation) over the course of treatment averaged 1.9 mm. Conclusions : Properly performed ultrasound image acquisition and analysis can detect dosimetrically relevant changes in the size of a leaking balloon. This study confirms that US imaging is a valid method of verifying APBI balloon integrity over the course of treatment.
目的:概述了乳腺肿块球囊APBI中遇到的超声成像伪影。分析超声测量误差和球囊泄漏的剂量学影响,以确定是否可以可靠地检测到临床上相关的球囊大小变化。方法:对乳腺肿块球囊幻影进行超声成像,以更好地了解测量误差和准确性。计算了不同尺寸的球囊到达处方点的剂量与球囊直径的关系。将结果与气球直径和填充体积的幻影测量结果进行比较,以评估组织向内移动与气球边界缩小所导致的剂量变化。在接受10个疗程治疗的APBI患者中,将超声成像测量球囊大小的准确性和可变性与CT进行比较。结果:超声伪影结合形成远端球囊边界的假图像。适当的美国探头方向和测点位置的选择提高了距离测量精度。球囊直径变化1毫米,误差为±0.1毫米,对应于距球囊1厘米的剂量变化<4%。相对于CT的测量误差平均小于1.4 mm,治疗过程中的变异性(标准差)平均为1.9 mm。结论:正确的超声图像采集和分析可以检测泄漏球囊大小的剂量学相关变化。本研究证实了超声成像是在治疗过程中验证APBI球囊完整性的有效方法。
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引用次数: 0
A Case Report of Carbohydrate Antigen 19-9 Producing Advanced Gastric Cancer 糖抗原19-9致晚期胃癌1例报告
Pub Date : 2016-10-26 DOI: 10.5539/CCO.V5N2P49
Konomi Mizuguchi, Koich Sato, H. Maekawa, M. Sakurada, H. Orita, T. Kushida, K. Senuma, Tomoaki Ito, Hirokazu Matsuzawa, Syunsuke Watanabe, S. Tokuda, S. Ueda, R. Wada
The gastric cancer producing carbohydrate antigen 19-9 (CA 19-9) is a rare and unknown that characterize informations. 74-year-old woman who was admitted with complaints of epigastric discomfort. An advanced cancer was found in her lower gastric region; biopsy of the tumor revealed poorly-differentiated adenocarcinoma. Her serum CA 19-9 was extremely elevated at 2322 U/ml and computed tomography demonstrated enlargement of the para-aortic lymph node; thus the tumor was considered unresectable. The patient received 8 cycles of chemotherapy with S-1/cisplatin, which shrank the para-aortic lymph node dramatically, hence she underwent D2 gastrectomy. Immunohistochemical staining of the resected cancer revealed that a third of the cancer cells were positive for CA 19-9. In addition, her serum CA 19-9 decreased rapidly after surgery and she remains alive without recurrence three years after surgery. We report one high level of CA 19-9 gastric cancer case with dramatically chemosensitive.
胃癌产生碳水化合物抗原19-9 (CA 19-9)是一种罕见且未知的特征信息。74岁女性,因上腹不适入院。下胃区发现晚期肿瘤;肿瘤活检显示为低分化腺癌。血清CA 19-9异常升高至2322 U/ml,计算机断层扫描显示主动脉旁淋巴结肿大;因此,肿瘤被认为是不可切除的。患者经S-1/顺铂化疗8周期,主动脉旁淋巴结明显缩小,行D2胃切除术。切除肿瘤的免疫组化染色显示三分之一的癌细胞CA 19-9阳性。此外,术后患者血清CA 19-9迅速下降,术后3年无复发。我们报告一例高水平ca19 -9胃癌患者具有显著的化疗敏感性。
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引用次数: 2
Gastrointestinal Stromal Tumours: A 10 Year Multicenter Audit 胃肠道间质瘤:10年多中心审计
Pub Date : 2016-10-26 DOI: 10.5539/CCO.V6N1P1
G. Watson, D. Kelly, E. Malone, J. Gleeson, G. Mcentee, J. Geoghegan, C. Kelly, R. McDermott, J. McCaffrey
Background: Gastrointestinal stromal tumours (GISTs) are unique neoplasms of the gastrointestinal (GI) tract. The development of targeted therapeutic agents such as imatinib mesylate (Glivec) has altered the way on how we now manage these rare malignancies. The aim of this study was to evaluate the management of GISTs in three Irish tertiary hospitals. Methods: We performed a retrospective, multicenter audit of patients diagnosed with gastrointestinal stromal tumours over a ten year period (2005-2015). Results: 110 patients were included in the study. Abdominal pain was the most common presenting symptom, reported in 30% of patients, while 31% were incidental findings. The stomach was the most common primary site of disease, observed in 77% of cases. 15 patients had metastatic disease at the time of diagnosis (14%), and 10 of these patients had liver involvement. More than half of patients (61%) were managed with surgical excision alone (61%), while 24 were managed with surveillance and 28 patients treated with adjuvant Glivec, which was generally well tolerated. 18 patients (20%) demonstrated recurrent or progressive disease after first line treatment. 102 patients (93%) are alive today. Conclusion: While surgery is widely regarded as the primary treatment modality for GISTs the addition of imatinib mesylate has enabled physicians to deliver more personalised treatment while optimising patient outcomes.
背景:胃肠道间质瘤(gist)是一种独特的胃肠道肿瘤。靶向治疗药物如甲氨甲酸伊马替尼(Glivec)的发展已经改变了我们现在治疗这些罕见恶性肿瘤的方式。本研究的目的是评估三家爱尔兰三级医院的gist管理。方法:我们对10年间(2005-2015年)诊断为胃肠道间质瘤的患者进行了回顾性、多中心审计。结果:110例患者纳入研究。30%的患者报告腹痛是最常见的症状,而31%是偶然发现的。胃是最常见的原发部位,占77%。15例患者在诊断时有转移性疾病(14%),其中10例患者有肝脏受累。超过一半的患者(61%)单独接受手术切除(61%),24例患者接受监测,28例患者接受辅助格列卫治疗,格列卫通常耐受性良好。18例(20%)患者在一线治疗后出现复发或进展性疾病。目前有102名患者(93%)存活。结论:虽然手术被广泛认为是gist的主要治疗方式,但甲磺酸伊马替尼的加入使医生能够提供更个性化的治疗,同时优化患者的预后。
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引用次数: 0
Parenteral Nutrition in Patients with Advanced Cancer and Gastrointestinal Failure or Obstruction 晚期癌症合并胃肠功能衰竭或梗阻患者的肠外营养
Pub Date : 2016-10-26 DOI: 10.5539/CCO.V5N2P54
I. Chermesh, N. Haim, A. Amit, M. Waterman, I. Papier, T. Mashiach
Malnutrition in patients with advanced cancer and gastrointestinal failure (ACGIF) is inevitable. This is a prospective study of a cohort of patients with ACGIF who were treated by home parenteral nutrition (HPN). Included were all patients with ACGIF treated with HPN since January 2003. Data concerning the primary disease, demographics, functional capacity, and PN-related complications were obtained. 125 patients, age's 60±12.9 years, were included. Seven (6%) had KPS<50. Median survival was 3.2 months. Cumulative survival was 0.95, 0.50, 0.25, and 0.09 at two weeks, three and six months, and one year after initiation of HPN, respectively. Multivariate analysis revealed higher mortality associated with male gender (HR 1.48 95% CI 1.03-2.14; p<0.05), albumin level<2.5 gr% (HR 1.73 95% CI 1.18-2.54 p<0.05), and low functional capacity (KPS<50) (HR 2.63 95% CI 1.21-5.74; p<0.05). Survival was not associated with age or BMI. More than 50% of patients survived more than three months, and more than 95% survived longer than two weeks. We cautiously suggest that HPN has prolonged survival and prevented starvation-related manifestations. The decision to initiate HTPN must be reached based on individual considerations, taking into account patient’s preferences.
晚期癌症合并胃肠功能衰竭(ACGIF)患者的营养不良是不可避免的。这是一项对ACGIF患者进行家庭肠外营养(HPN)治疗的前瞻性研究。纳入自2003年1月以来接受HPN治疗的所有ACGIF患者。获得有关原发疾病、人口统计学、功能能力和pn相关并发症的数据。纳入125例患者,年龄60±12.9岁。7例(6%)KPS<50。中位生存期为3.2个月。HPN开始后2周、3个月、6个月和1年的累积生存率分别为0.95、0.50、0.25和0.09。多因素分析显示,男性死亡率较高(HR 1.48, 95% CI 1.03-2.14;p<0.05),白蛋白水平<2.5 gr% (HR 1.73 95% CI 1.18-2.54 p<0.05),低功能容量(KPS<50) (HR 2.63 95% CI 1.21-5.74;p < 0.05)。生存率与年龄或体重指数无关。超过50%的患者存活超过三个月,超过95%的患者存活超过两周。我们谨慎地认为,HPN延长了生存期,并防止了饥饿相关的表现。启动HTPN的决定必须基于个人考虑,考虑到患者的偏好。
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引用次数: 1
Primary CNS Tumors and Leptomeningeal, Disseminated and/or Multicentric Disease in Children Treated in Phase II Studies with Antineoplastons A10 and AS2-1 抗瘤质体A10和AS2-1治疗儿童原发性中枢神经系统肿瘤和轻脑膜、播散性和/或多中心疾病的II期研究
Pub Date : 2016-10-10 DOI: 10.5539/CCO.V5N2P38
S. Burzynski, T. Janicki, Gregory S. Burzynski
It is estimated that as many as 30% of patients with primary CNS tumors have leptomeningeal, disseminated, and/or multicentric disease (LDM). These patients respond poorly to conventional therapy. Fifty-seven children with LDM (median age of 7.1 years) were treated in multiple prospective phase II clinical studies of high- and low-grade primary CNS tumors with Antineoplastons A10 and AS2-1 (ANP). Their inclusion in this analysis was based on MRI imaging. Patients with glioblastoma were excluded. The patients received ANP therapy 6 times daily; A10: 8.77 g/kg/d; AS2-1: 0.35 g/kg/d. The response to ANP was monitored by MRIs every 8 weeks. Patients evaluable for efficacy ( N = 40) received 12 or more weeks of ANP or developed progressive disease (PD) before 12 weeks. 10 patients (17.5%) achieved an objective response (OR) with 4 (7%) achieving a complete response (CR) and 6 (10.5%) had a partial response (PR). Stable disease (SD) was maintained in 7 patients (12.3%) and PD developed in 23 patients (40.4%). Survival analysis of the 57 children showed 2- and 5-year overall survival (OS) were both 28% while 10- and 15-year OS were both 26%. One of the patients achieving an OR had atypical teratoid/rhabdoid tumor (AT/RT) while nine had low-grade gliomas (LGGs). Grade 3 and 4 toxicities included hypokalemia (14.0%); fatigue, anemia, hypernatremia and leukopenia (3.5% each); diarrhea, hypertension, joint pain, thrombocytopenia, and somnolence (1.8% each). These findings suggest the need for a single-arm, phase II study of ANP in children with LDM.
据估计,多达30%的原发性中枢神经系统肿瘤患者患有脑膜轻、播散性和/或多中心疾病(LDM)。这些病人对常规治疗反应不佳。57名患有LDM的儿童(中位年龄为7.1岁)在多个前瞻性II期临床研究中接受抗瘤plastons A10和AS2-1 (ANP)治疗高级别和低级别原发性中枢神经系统肿瘤。他们被纳入这项分析是基于核磁共振成像。胶质母细胞瘤患者排除在外。患者每日接受ANP治疗6次;A10: 8.77 g/kg/d;AS2-1: 0.35 g/kg/d。每8周通过核磁共振成像监测ANP的反应。可评估疗效的患者(N = 40)接受了12周或更长时间的ANP治疗,或在12周之前出现了进行性疾病(PD)。10例(17.5%)患者达到客观缓解(OR), 4例(7%)患者达到完全缓解(CR), 6例(10.5%)患者达到部分缓解(PR)。病情稳定(SD) 7例(12.3%),PD 23例(40.4%)。57例患儿的生存分析显示,2年和5年总生存率(OS)均为28%,10年和15年总生存率(OS)均为26%。1例患者为非典型畸胎瘤/横纹肌样瘤(AT/RT), 9例为低级别胶质瘤(LGGs)。3级和4级毒性包括低钾血症(14.0%);疲劳、贫血、高钠血症和白细胞减少症(各3.5%);腹泻、高血压、关节痛、血小板减少和嗜睡(各1.8%)。这些发现表明,有必要对LDM患儿进行ANP单臂II期研究。
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引用次数: 5
Non-Association of Methylenetetrahydrofolate Reductase (MTHFR) Polymorphisms with Homocysteine Levels, Venous or Arterial Thromboses in 1,141 North-Central Appalachian Patients 1141名阿巴拉契亚中北部患者的亚甲基四氢叶酸还原酶(MTHFR)多态性与同型半胱氨酸水平、静脉或动脉血栓形成无关
Pub Date : 2016-08-21 DOI: 10.5539/CCO.V5N2P21
F. Khimani, P. Perrotta, G. Hobbs, T. Hogan
Objectives : MTHFR polymorphism testing has been used by clinicians for thrombophilia risk assessment. We questioned the utility of such testing. Methods : 1,141 patients age 18 and above had MTHFR testing for both C677T and A1298C polymorphisms, 2006 through 2012. Available plasma homocysteine levels were obtained and ICD-9 billing codes were grouped to identify venous or arterial clots in these patients. Results : 901 women and 240 men were tested; median age in women was 33 years (range 18-86); median age in men was 47 years (range 18-83). County of residence mapping confirmed that this MTHFR tested population was from north-central Appalachia. Only 144 (13%) of the 1,141 patients had no polymorphism at either the C677T or the A1298C locus; only 4 patients (0.4%) had 3 or more polymorphisms; 993 patients (87%) had either one or two polymorphisms. We found polymorphism frequency pattern similar in both sexes. Although men had higher homocysteine levels, MTHFR polymorphisms did not associate with homocysteine levels in either sex. In 901 women tested, the ICD-9 coded incidence of arterial clots was 20%, and of venous clots was 21%; in 240 men tested, the incidence of arterial clots was 48% and of venous clots was 40%. MTHFR polymorphisms did not associate with arterial or venous clots in either sex. Based on CPT billing codes, a minimal cost estimate was $137,000 for performing these 1,141 MTHFR tests. Conclusions : MTHFR testing was costly and did not add useful information during thrombophilia evaluation in this patient population.
目的:MTHFR多态性检测已被临床医生用于血栓形成风险评估。我们质疑这种测试的效用。方法:2006年至2012年,1141名18岁及以上的患者进行了C677T和A1298C多态性的MTHFR检测。获得可用的血浆同型半胱氨酸水平,并对ICD-9账单代码进行分组,以识别这些患者的静脉或动脉血栓。结果:女性901人,男性240人;女性的中位年龄为33岁(18-86岁);男性的中位年龄为47岁(18-83岁)。居住地县测绘证实,该MTHFR检测人群来自阿巴拉契亚中北部。1141例患者中只有144例(13%)在C677T或A1298C位点没有多态性;只有4例患者(0.4%)有3个或更多的多态性;993例(87%)存在一种或两种多态性。我们发现多态性频率模式在两性中相似。尽管男性的同型半胱氨酸水平较高,但MTHFR多态性与两性的同型半胱氨酸水平无关。在901名接受测试的女性中,ICD-9编码的动脉血栓发生率为20%,静脉血栓发生率为21%;在240名接受测试的男性中,动脉血栓的发生率为48%,静脉血栓的发生率为40%。在两性中,MTHFR多态性与动脉或静脉血栓无关。根据CPT计费代码,进行这1,141次MTHFR测试的最低成本估计为13.7万美元。结论:MTHFR检测是昂贵的,并且在该患者群体的血栓形成评估中没有增加有用的信息。
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引用次数: 0
Transformation of Primary Conjunctival Cells Transfected with Papilloma and Herpesvirus Oncogenes 原代结膜细胞转染乳头瘤和疱疹病毒癌基因的转化
Pub Date : 2016-08-19 DOI: 10.5539/CCO.V5N2P6
Kenneth O. Simbiri, H. Jha, Giacomina Massaro-Giordano, E. Robertson
Ocular surface squamous neoplasia (OSSN) is a common cancer that has recently increased in incidence in HIV-1 infected patients. The rise has been more transparent in sub-Sahara Africa. Our recent publications showed the association of OSSN with multiple viral, bacterial and parasitic infections. Here we show through transfection with different viral constructs, the changes taking place in the primary conjunctival cells which involve some of the important markers associated with initiation and maintenance of the cancer. We transfected primary conjunctival cells with different oncogenic viral genes (HPV16-E6, HPV16-E7, HPV16-E6/E7, KSHV-LANA, and EBV-EBNA1) that have been associated with transformation of infected cells. The cells were tested for expression of different markers linked to oncogenesis. We used RT PCR to determine the expression of the markers. The level of expression was determined in each case. We also performed immunohistochemistry (IHC) on the primary cells using specific antibodies. The transfected conjunctival cells were demonstrated to be epitheliod as determined by expression of Cytokeratin-19 (C-19) and Vimentin markers. The primary conjunctival cells were efficiently transfected with the specific viral oncogenes resulting in expression of different cytokines, chemokine, cell cycle markers, and growth factors. The different constructs elicited expression and/or suppression of p53, p21, pRB, IL-10, IL-13, cyclinD1, TNF, TNF13B, and VEGF in specific transfected conjunctival primary cells. Our findings indicate that the viral oncogene expression in primary conjunctival cells contributed to the production of inflammatory cytokines, chemokines and dysregulation of cell cycle proteins in primary conjunctival tissues. This mirrors the transformation process in OSSN pathogenesis. Further studies should follow to identify pathways dysregulated that can be targeted for therapy or vaccine development.
眼表鳞状瘤变(OSSN)是一种常见的癌症,最近在HIV-1感染患者中的发病率有所增加。撒哈拉以南非洲地区的增长更为明显。我们最近的出版物显示OSSN与多种病毒、细菌和寄生虫感染有关。在这里,我们通过转染不同的病毒结构,显示了在原代结膜细胞中发生的变化,这些变化涉及与癌症的发生和维持相关的一些重要标记物。我们转染了具有不同致癌病毒基因(HPV16-E6、HPV16-E7、HPV16-E6/E7、KSHV-LANA和EBV-EBNA1)的原代结膜细胞,这些基因与感染细胞的转化有关。研究人员检测了这些细胞中与肿瘤发生有关的不同标志物的表达。我们用RT - PCR检测标记物的表达。在每种情况下确定表达水平。我们还使用特异性抗体对原代细胞进行免疫组化(IHC)。通过细胞角蛋白-19 (C-19)和Vimentin标记物的表达,证实转染的结膜细胞呈上皮样。用特异性的病毒癌基因转染原代结膜细胞,导致不同细胞因子、趋化因子、细胞周期标记物和生长因子的表达。不同的构建引起p53、p21、pRB、IL-10、IL-13、cyclinD1、TNF、TNF13B和VEGF在特定转染的结膜原代细胞中的表达和/或抑制。我们的研究结果表明,病毒癌基因在原代结膜细胞中的表达有助于原代结膜组织中炎症细胞因子、趋化因子和细胞周期蛋白的失调。这反映了OSSN发病机制中的转化过程。接下来应该进行进一步的研究,以确定可以靶向治疗或开发疫苗的失调途径。
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引用次数: 1
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Cancer and clinical oncology
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