期刊文献+
共找到11篇文章
< 1 >
每页显示 20 50 100
Targeting the organelle for radiosensitization in cancer radiotherapy
1
作者 Xiaoyan Sun Linjie Wu +2 位作者 Lina Du Wenhong Xu Min Han 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS 2024年第2期52-71,共20页
Radiotherapy is a well-established cytotoxic therapy for local solid cancers, utilizing high-energy ionizing radiation to destroy cancer cells. However, this method has several limitations, including low radiation ene... Radiotherapy is a well-established cytotoxic therapy for local solid cancers, utilizing high-energy ionizing radiation to destroy cancer cells. However, this method has several limitations, including low radiation energy deposition, severe damage to surrounding normal cells, and high tumor resistance to radiation. Among various radiotherapy methods, boron neutron capture therapy (BNCT) has emerged as a principal approach to improve the therapeutic ratio of malignancies and reduce lethality to surrounding normal tissue, but it remains deficient in terms of insufficient boron accumulation as well as short retention time, which limits the curative effect. Recently, a series of radiosensitizers that can selectively accumulate in specific organelles of cancer cells have been developed to precisely target radiotherapy, thereby reducing side effects of normal tissue damage, overcoming radioresistance, and improving radiosensitivity. In this review, we mainly focus on the field of nanomedicine-based cancer radiotherapy and discuss the organelle-targeted radiosensitizers, specifically including nucleus, mitochondria, endoplasmic reticulum and lysosomes. Furthermore, the organelle-targeted boron carriers used in BNCT are particularly presented. Through demonstrating recent developments in organelle-targeted radiosensitization, we hope to provide insight into the design of organelle-targeted radiosensitizers for clinical cancer treatment. 展开更多
关键词 cancer radiotherapy Organelle-target RADIOSENSITIZATION Boron neutron capture therapy NANOMEDICINES
下载PDF
Helical tomotherapy and volumetric modulated arc therapy:New therapeutic arms in the breast cancer radiotherapy 被引量:7
2
作者 Olivier Lauche Youlia M Kirova +8 位作者 Pascal Fenoglietto Emilie Costa Claire Lemanski Celine Bourgier Olivier Riou David Tiberi Francois Campana Alain Fourquet David Azria 《World Journal of Radiology》 CAS 2016年第8期735-742,共8页
AIM To analyse clinical and dosimetric results of helical tomotherapy(HT) and volumetric modulated arc therapy(VMAT) in complex adjuvant breast and nodes irradiation.METHODS Seventy-three patients were included(31 HT ... AIM To analyse clinical and dosimetric results of helical tomotherapy(HT) and volumetric modulated arc therapy(VMAT) in complex adjuvant breast and nodes irradiation.METHODS Seventy-three patients were included(31 HT and 42 VMAT). Dose were 63.8 Gy(HT) and 63.2 Gy(VMAT) in the tumour bed, 52.2 Gy in the breast, 50.4 Gy in supraclavicular nodes(SCN) and internal mammary chain(IMC) with HT and 52.2 Gy and 49.3 Gy in IMC and SCN with VMAT in 29 fractions. Margins to particle tracking velocimetry were greater in the VMAT cohort(7 mm vs 5 mm).RESULTS For the HT cohort, the coverage of clinical target volumes was as follows: Tumour bed: 99.4% ± 2.4%; breast: 98.4% ± 4.3%; SCN: 99.5% ± 1.2%; IMC:96.5% ± 13.9%. For the VMAT cohort, the coverage was as follows: Tumour bed: 99.7% ± 0.5%, breast: 99.3% ± 0.7%; SCN: 99.6% ± 1.4%; IMC: 99.3% ± 3%. For ipsilateral lung, Dmean and V20 were 13.6 ± 1.2 Gy, 21.1% ± 5%(HT) and 13.6 ± 1.4 Gy, 20.1% ± 3.2%(VMAT). Dmean and V30 of the heart were 7.4 ± 1.4 Gy, 1% ± 1%(HT) and 10.3 ± 4.2 Gy, 2.5% ± 3.9%(VMAT). For controlateral breast Dmean was 3.6 ± 0.2 Gy(HT) and 4.6 ± 0.9 Gy(VMAT). Acute skin toxicity grade 3 was 5% in the two cohorts.CONCLUSION HT and VMAT in complex adjuvant breast irradiation allow a good coverage of target volumes with an acceptable acute tolerance. A longer follow-up is needed to assess the impact of low doses to healthy tissues. 展开更多
关键词 Three-dimensional conformal radiotherapy Intensity modulated radiation therapy TOXICITY Helical tomotherapy Volumetric modulated arc therapy Breast cancer radiotherapy
下载PDF
Effect of external beam radiotherapy on patency of uncovered metallic stents in patients with inoperable bile duct cancer 被引量:3
3
作者 Jun Kyu Lee Won Kwon Kwack +4 位作者 Sang Hyub Lee Jin Hee Jung Jae Hyun Kwon In Woong Han Jin Ho Lee 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS 2014年第4期423-427,共5页
BACKGROUND: Although biliary decompression with metallic stenting is the preferred treatment for inoperable bile duct cancer(BDC), maintenance of patency is still unsatisfactory.We tried to assess the effectiveness... BACKGROUND: Although biliary decompression with metallic stenting is the preferred treatment for inoperable bile duct cancer(BDC), maintenance of patency is still unsatisfactory.We tried to assess the effectiveness and safety of external beam radiotherapy(EBRT) for prolonging stent patency in patients having uncovered metallic stents.METHOD: We retrospectively reviewed 50 patients who received endoscopic stenting, of whom 18 received EBRT(RT group) and 32 did not(non-RT group).RESULTS: No difference was found in baseline characteristics between the two groups. Although stent patency was longer in the RT group than that in the non-RT group(140.7±51.3 vs136.4±34.9 days, P=0.94), the difference was not statistically significant. There were a lower rate of stent occlusion(27.8% vs50.0% of patients, P=0.12) and a longer overall survival(420.1 ±73.2 vs 269.1±41.7 days, P=0.11) in the RT group than in the non-RT group, and the difference again was not statistically significant. The development of adverse reactions did not differ(55.6% vs 53.1% of patients, P=0.91). There was no serious adverse reaction in both groups(P=0.99).CONCLUSIONS: EBRT did not significantly improve stent patency in patients with inoperable BDC having uncovered metallic stents. However, EBRT was safe. Future trials withrefined protocols for better efficacy are expected. 展开更多
关键词 bile duct cancer radiotherapy survival self-expandable metallic stent patency
下载PDF
Nanoparticles for targeted cancer radiotherapy
4
作者 Roger M.Pallares Rebecca J.Abergel 《Nano Research》 SCIE EI CAS CSCD 2020年第11期2887-2897,共11页
Radiotherapy,where ionizing radiation is locally delivered either through an external beam or by surgically implanting radionuclide-based seeds in the tumor,is one of the gold standard treatments for cancer.Due to the... Radiotherapy,where ionizing radiation is locally delivered either through an external beam or by surgically implanting radionuclide-based seeds in the tumor,is one of the gold standard treatments for cancer.Due to the non-selective nature of radiation,healthy tissue surrounding the cancerous region is usually affected by the treatment.Hence,new strategies,including targeted alpha therapy,are being studied to improve the selectivity of the treatment and minimize side effects.Several challenges,however,limit the current development of targeted radiotherapy,such as the functionalization of the therapeutic agent with targeting vectors and controlling the release of recoiling daughters.Nanoparticles offer unique opportunities as drug delivery vehicles,since they are biocompatible,enhance the cellular uptake of drugs,and are easily functionalized with targeting molecules.In this review,we examine how nanoparticles can be used for targeted radiotherapy,either as sensitizers of external beams or as delivery vehicles for therapeutic radionuclides.We describe the clinical relevance of different types of nanoparticles,followed by an analysis of how these nanoconstructs can solve some of the main limitations of conventional radiotherapy.Finally,we critically discuss the current situation of nanoparticle-based radiotherapy in clinical settings and challenges that need to be overcome in the future for further development of the field. 展开更多
关键词 radiotherapy targeted cancer radiotherapy NANOPARTICLES cancer targeted alpha therapy external beam
原文传递
The Impact of Risk-Based Cancer Care Planning on the Complications and Self-Care Ability of Cervical Cancer Patients Undergoing Radiotherapy
5
作者 Wei Zheng Yan Nie 《Journal of Clinical and Nursing Research》 2022年第2期1-4,共4页
Objective:To explore the impact of the application and implementation of risk-based cancer care planning in patients with cervical cancer radiotherapy on the complications and self-care ability of patients.Method:This... Objective:To explore the impact of the application and implementation of risk-based cancer care planning in patients with cervical cancer radiotherapy on the complications and self-care ability of patients.Method:This study recruited selected patients who came for cervical cancer radiotherapy in a tertiary hospital in Xianyang City,Shaanxi Province from November 2020 to November 2021.One hundred patients were recruited.Nursing management was carried out,and cancer care planning under the concept of conventional care and risk were applied.The effects of different nursing methods on patients were compared and analyzed.Results:The patients in the experimental group had higher scores of self-care ability and lower complication rate.All data were significantly different from those of the control group(P<0.05),and the nursing effect on the experimental group was better.Conclusion:The application and implementation of the risk-based cancer care planning in patients who received cervical cancer radiotherapy has significant clinical effects,which is beneficial to reduce the incidence of patients’adverse reactions and promote patient recovery. 展开更多
关键词 Risk concept cancer care planning Patients on cervical cancer radiotherapy Complication rate Self-care ability
下载PDF
Experience with intraoperative radiotherapy for breast cancer: the Geneva University Hospital's experience
6
作者 Emanuela Esposito Michael Douek 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2016年第4期463-466,共4页
Background Breast conserving surgery along with adjuvant radiotherapy is effective in terms of local control and survival for early- stage breast cancer (1). External beam radiotherapy (EBRT) following breast cons... Background Breast conserving surgery along with adjuvant radiotherapy is effective in terms of local control and survival for early- stage breast cancer (1). External beam radiotherapy (EBRT) following breast conserving surgery has been shown to improve survival by preventing local recurrence, in the Early Breast Cancer Trialists' Collaborative Group meta-analysis (2). Standard radiotherapy typically requires numerous fractions over a 3-5 week period and is performed weeks or months after surgery or chemotherapy. 展开更多
关键词 IORT Experience with intraoperative radiotherapy for breast cancer the Geneva University Hospital’s experience
下载PDF
Dosimetric Comparative Analysis of Volumetric Modulated Arc Therapy and Intensity-Modulated Radiation Therapy in Cervical Cancer
7
作者 Ruixin He 《Proceedings of Anticancer Research》 2023年第3期13-17,共5页
Objective:To carry out dosimetric comparison between volumetric modulated arc therapy(VMAT)and intensity-modulated radiation therapy(IMRT)in cervical cancer.Methods:50 postoperative cervical cancer patients were inclu... Objective:To carry out dosimetric comparison between volumetric modulated arc therapy(VMAT)and intensity-modulated radiation therapy(IMRT)in cervical cancer.Methods:50 postoperative cervical cancer patients were included in this study.The patients were admitted for treatment from January 2021 to January 2022.VMAT and IMRT plans were designed for each patient to analyze the dose distribution in the target area of the two treatment techniques.Results:Comparing the monitor unit for single treatment(638.21±116.21 MU)and time of single treatment(143.21±23.14 s)in the observation group and the monitor unit for single treatment(932.14±74.11 MU)and time of single treatment(223.14±17.26 s)in the control group,there was significant difference(P<0.05);there was also significant difference(P<0.05)between the normal tissue(bladder and rectum)of the observation group and that(bladder and rectum)of the control group.Conclusion:VMAT is more effective in cervical cancer,and it has a certain protective effect on normal tissues in patients and can reduce the radiation dose. 展开更多
关键词 Volumetric modulated arc therapy Intensity-modulated radiation therapy radiotherapy for cervical cancer DOSE
下载PDF
RADIOTHERAPEUTIC TOLERANCE OF THE RECONS-TRUCTIVE FLAPS FOLLOWING RADICAL EXCISION OF ORO-MAXILLOFACIAL CANCERS
8
作者 王中和 邱蔚六 黄光斌 《Medical Bulletin of Shanghai Jiaotong University》 CAS 2000年第1期11-13,共3页
Objectire To evaluate the radiation tolerance of the reconstructive flaPs used following radicalexcision of oro - maxillofacial tumors. methods The survival and radiation response of 88 flaps (preoperative 14and posto... Objectire To evaluate the radiation tolerance of the reconstructive flaPs used following radicalexcision of oro - maxillofacial tumors. methods The survival and radiation response of 88 flaps (preoperative 14and postoperative 74) in 82 patients were reviewed. Results The survival rate of 14 flaps done on preradiatedareas was 85.7% (12/14), markedly inferior to that of the flaps receiving postoperative radiation (98.6%, 73/74). Therate of radiation response of the flaps (35.1%) was signofcantly lower than that of the normal oral mucosasurrounding the flap (83.8%, P<0.01). Conclusion The good radiation tolerability of the transplants followingtumors excision pointed to the salety of its postoperative radiotherapy. 展开更多
关键词 oro-maxillofacial cancers reconstructive flap radiation tolerance radiotherapy
下载PDF
基于纳米生物材料的肿瘤乏氧调控与放疗增效研究进展 被引量:2
9
作者 赵琪 刘庄 《肿瘤防治研究》 CAS CSCD 2021年第2期109-114,共6页
放射治疗是临床肿瘤治疗常用的一种治疗策略,包括将放射性核素注射或植入体内的核素内放疗以及利用外界的射线(如X射线)对肿瘤部位进行照射的外照射放疗两大类。由于氧分子在电离辐射杀伤肿瘤细胞的过程中发挥着重要的作用,而实体肿瘤... 放射治疗是临床肿瘤治疗常用的一种治疗策略,包括将放射性核素注射或植入体内的核素内放疗以及利用外界的射线(如X射线)对肿瘤部位进行照射的外照射放疗两大类。由于氧分子在电离辐射杀伤肿瘤细胞的过程中发挥着重要的作用,而实体肿瘤内部却普遍存在乏氧的微环境,肿瘤乏氧是导致其对放疗耐受的重要原因之一。近年来,随着生物材料和纳米技术的发展,一系列有效调控和逆转肿瘤乏氧微环境的技术被报道。本文将介绍近年来发展的基于纳米生物材料的肿瘤乏氧调控策略及其在放疗增敏中的应用,并对该类技术未来的临床应用进行展望和讨论。 展开更多
关键词 纳米技术 生物材料 肿瘤乏氧 肿瘤放疗
下载PDF
Selectively enhancing radiosensitivity of cancer cells via in situ enzyme-instructed peptide self-assembly
10
作者 Yang Gao Jie Gao +6 位作者 Ganen Mu Yumin Zhang Fan Huang Wenxue Zhang Chunhua Ren Cuihong Yang Jianfeng Liu 《Acta Pharmaceutica Sinica B》 SCIE CAS CSCD 2020年第12期2374-2383,共10页
The radiotherapy modulators used in clinic have disadvantages of high toxicity and low selectivity.For the first time,we used the in situ enzyme-instructed self-assembly(EISA)of a peptide derivative(Nap-GDFDFpYSV)to s... The radiotherapy modulators used in clinic have disadvantages of high toxicity and low selectivity.For the first time,we used the in situ enzyme-instructed self-assembly(EISA)of a peptide derivative(Nap-GDFDFpYSV)to selectively enhance the sensitivity of cancer cells with high alkaline phosphatase(ALP)expression to ionizing radiation(IR).Compared with the in vitro pre-assembled control formed by the same molecule,assemblies formed by in situ EISA in cells greatly sensitized the ALPhigh-expressing cancer cells to y-rays,with a remarkable sensitizer enhancement ratio.Our results indicated that the enhancement was a result of fixing DNA damage,arresting cell cycles and inducing cell apoptosis.Interestingly,in vitro pre-formed assemblies mainly localized in the lysosomes after incubating with cells,while the assemblies formed via in situ EISA scattered in the cell cytosol.The accumulation of these molecules in cells could not be inhibited by endocytosis inhibitors.We believed that this molecule entered cancer cells by diffusion and then in situ self-assembled to form nanofibers under the catalysis of endogenous ALP.This study provides a successful example to utilize intracellular in situ EISA of small molecules to develop selective tumor radiosensitizers. 展开更多
关键词 In situ enzyme-instructed self-assembly(EISA) PRE-ASSEMBLY Alkaline phosphatase(ALP) PEPTIDE cancer radiotherapy Nanofiber Histone deacetylases inhibitor(HDACI) RADIOSENSITIZER
原文传递
Effect of Compound Zhuye Shigao Granule(复方竹叶石膏颗粒)on Acute Radiation-Induced Esophagitis in Cancer Patients:A Randomized Controlled Trial 被引量:12
11
作者 WANG Li-juan LU Jun-zhang +2 位作者 CAI Bo-ning LI Ming-wei QU Bao-lin 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2017年第2期98-104,共7页
Objective: To observe the efficacy and safety of the Chinese medicine(CM) Compound Zhuye Shigao Granule(复方竹叶石膏颗粒, CZSG) on acute radiation-induced esophagitis(ARIE) in cancer patients. Methods: In a bl... Objective: To observe the efficacy and safety of the Chinese medicine(CM) Compound Zhuye Shigao Granule(复方竹叶石膏颗粒, CZSG) on acute radiation-induced esophagitis(ARIE) in cancer patients. Methods: In a blinded, randomized, Kangfuxin Solution(康复新液, KFX)-controlled, single-centre clinical trial, 120 patients with lung, esophagus or mediastinal cancer were prospectively enrolled and assigned to the treatment group(60 cases) and control group(60 cases) by the random number table method. All patients received concurrent or sequential radiotherapy(2 Gy per day, 5 times per week, for 4 weeks) and were treated for 4 weeks since the radiation therapy. Patients in the treatment group were given 12 mg CZSG orally, thrice daily, while patients in the control group were given 10 m L KFX orally, thrice daily. The major indicators were observed, including the incidence and grade of esophagitis, time of occurrence and duration. Minor indicators were changes of CM symptoms, weight and Karnofsky Performance Status(KPS) Scale during 4 weeks from the beginning, recorded once a week. Blood routine examination and hepatorenal function were detected at the 2nd and 4th weeks. Results: The incidence and grade of ARIE were significantly decreased in the treatment group compared with the control group(P〈0.05). CZSG appeared to significantly delay the time of ARIE occurrence and reduce the duration compared with KFX(P〈0.05). The scores of CM symptoms, KPS and weight were improved significantly in the treatment group compared with the control group(P〈0.05). There were no blood routine and hepatorenal function abnormal or obvious side-effects in both groups. Hemoglobin was improved and neutrophil and interleukin 6 were decreased in both groups after 4-week treatment compared with before treatment(P〈0.05), and there was no significant difference between the two groups(P〉0.05). Conclusions: CZSG can decrease the incidence and grade of ARIE, delay the time of occurrence, reduce duration and alleviate the damage of ARIE. It is safe and effective in the prevention and cure of ARIE. 展开更多
关键词 Compound Zhuye Shigao Granule acute radiation-induced esophagitis radiotherapy Chinese medicine cancer
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部