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Wu Xiumei Yan Jiangzhi Ye Huirong Qiu Jianting Wang Jian Wang Yujie 《Journal of neurology》2020,267(5):1227-1232
Journal of Neurology - Predicting the risk of intracranial hemorrhage (ICH) is an important aspect for improving the efficacy and safety of endovascular therapy (EVT). We intended to perform a... 相似文献
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目的 探讨大气污染中气态污染物对大鼠喉黏膜的急性损伤及可能机制。 方法 采用200 g左右健康SPF级SD大鼠12只,随机分为对照组和气态污染物暴露组,每组6只。对照组大鼠饲养于SPF环境中,气态污染物暴露组大鼠呼吸的气体为2016年北京市红色预警期间外界大气经HEPA滤膜过滤颗粒物后的空气,暴露时间为6 d。暴露后处死大鼠,取喉黏膜,检测大鼠喉黏膜的病理学改变及喉黏膜组织细胞因子IL-1β、IL-4、IL-5、IL-6、IL-10、IL-12、IL-13、IL-17a、IFN-γ、TNF-α的表达情况。 结果 与对照组相比,气态污染物暴露组大鼠喉黏膜上皮有不同程度的过度角化、基底细胞排列紊乱;IL-1β、IL-10、IL-13、IL-17a、TNF-α的表达增强(P<0.05);IL-12、IFN-γ的表达减少(P<0.05)。 结论 大气污染中的气态污染物可以引起大鼠喉黏膜损伤,其机制可能与Th1/Th2失衡,呈Th2优势应答有关。 相似文献
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Chan-Kyung Jane Cho Katherine Sunderland Tom Pickles Francois Bachand Kim N. Chi Scott Tyldesley 《Practical radiation oncology》2019,9(3):e274-e282
PurposeIncreasing the survival of patients with metastatic prostate cancer (PCa) may affect the demand for palliative radiation to bone (PRTB). Our aim was to characterize the use of PRTB in patients who died of PCa in British Columbia between 2003 and 2015.Methods and MaterialsAll patients with a diagnosis of PCa who died during the study period (n = 23,260) were identified from a population-based provincial registry. Patient and treatment characteristics were analyzed. PRTB utilization rate was calculated by year and location. Survival was calculated from the first and the last course of PRTB.ResultsA total of 5701 patients died of PCa, with a median survival from diagnosis of 5.2 years. The overall PRTB utilization rate was 38.6%, with an increasing trend over time. Multiple courses of PRTB were frequent, with 51% of patients receiving ≥2 courses of PRTB. Of the patients who died of PCa (15.2% of the PRTB cohort), 5.4% received PRTB within the last 4 weeks of life, 60% of whom received multiple fractions. Rural areas had a lower referral rate and lower use of PRTB. Patients with longer survival tended to receive multiple courses of treatment. The median survival after the first course of PRTB increased from 8.2 months in 2003 to 2004 to 9.4 months in 2013 to 2014 (P = .04).ConclusionsPRTB is only used in a minority of patients dying of PCa. The majority who die of PCa after PRTB do so within a year of their first course. The use of multifractionation was common in the last 4 weeks of life. Survival after first PRTB increased minimally over time, and additional research is required to identify its association with recent changes in practice. The referral rate and PRTB utilization rate differ between rural and nonrural locations, underlying the importance of accessibility and referral for utilization of PRTB. Investigating other barriers and ensuring equitable access to radiation are needed. 相似文献
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This is preliminary study assessing the efficacy and safety of concurrent use of radiation therapy (RT) and T-DM1 for the treatment of brain metastases (BM) in patients with HER2-positive metastatic breast cancer (BC). We retrospectively studied 12 patients treated for BM at the Institut Curie in 2014–2015 with T-DM1 and concurrent (4) or sequential (8) radiosurgery with or without whole brain irradiation. The following variables were studied: local control, clinical and radiological response as well as early and late side effects. The mean age of the population was 38 years at the time of diagnosis of BC and 46 years at of BM. All patients were with good PS. The response rate of the concurrent treatment group was 75?% with 1 complete response, 1 partial response, one stable disease and 1 progression. Comparatively, the response rate in the sequential group was as follows: two complete responses, two partial responses, six cases of stable disease and two cases of local progression. No patient experienced interruption of irradiation because of side effects. About 50?% of patients were asymptomatic after treatment. Radiation necrosis was observed in 50?% of patients in the concurrent group and 28.6?% of patients in the sequential group with a similar rate of oedema in the two groups. We found that the combination of T-DM1 and radiosurgery was feasible but can increase the incidence of radiation necrosis. Larger prospective studies with longer follow-up are needed to more clearly evaluate this association. 相似文献
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The basement membrane collagen IV-degrading matrix metalloproteinases -2 and -9 (MMPs) are most often linked to the malignant phenotype of tumor cells by playing a critical role in invasion, metastasis, angiogenesis, and vasculogenesis. We verified the activity of these two MMPs in the sera of patients affected by brain tumors (20 gliomas, 28 meningiomas and 20 metastasis) by zymography. The sera of 25 healthy volunteers with no concomitant illnesses were used for controls. Zymography showed four dominant gelatinolytic bands of 240, 130, 92 (MMP-9) and 72 (MMP-2) kDa. No statistically significant variations of MMP-2 proteolytic activity between patients and healthy individuals were observed. On the contrary, MMP-9 (both monomeric and multimeric forms) lytic activities were significantly higher in tumors specimens compared to healthy controls (p?<?0.001). Moreover, MMP-9 immunohistochemistry revealed: (1) a strong reactivity in neoplastic vessels of high-grade gliomas showing an inverse correlation with serum multimeric gelatinolytic activity; (2) a cytoplasmatic reactivity in meningiomas with a significantly increase in atypical meningioma compared with low-grade ones (p?=?0.036); (3) a positive correlation between MMP-9 and Ki-67 (Sperman Rho coefficient r?=?0.418 and p?=?0.034). Our results suggest that serum and tissue MMP-9 might provide clinicians additional objective information in intracranial neoplasms. Finally, it should be possible to use MMP-9 as a target for new forms of therapy. Nevertheless, due to the small number of patients included in the study, the conclusion may not be transferable to the general population and therefore further evaluations are needed. 相似文献