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Glioblastoma (GBM) is a clinically common type of glioma with a very poor prognosis and complex drug resistance mechanisms, high mortality, short survival time; invasiveness and recurrence are the main obstacles to treatment. Ferroptosis is an iron-dependent regulated cell death associated with massive lipid peroxidation that is related with the development and treatment response of various types of tumors. Cancer cells rely on their strong antioxidant capacity to avoid ferroptosis, therefore, exploring ferroptosis may be an effective strategy to prevent tumor proliferation and invasion. This article mainly reviews the mechanism of ferroptosis in GBM, as well as the research status and progress of ferroptosis as a potential therapeutic target.
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Objective:To detect the expression level of long non-coding RNA (lncRNA) nuclear receptor subfamily 2 group F member 2-antisense RNA 1 (NR2F2-AS1) and microRNA-129-5p (miR-129-5p) in glioma tissues and to explore its clinical significance.Methods:The glioma tissues of 103 patients with glioma who underwent surgical treatment in the neurosurgery department of Shanxi Provincial People′s Hospital from January 2015 to September 2016 and 50 normal brain tissues removed due to craniocerebral surgery in the same period were selected as the research objects. Real time fluorescence quantitative polymerase chain reaction (qRT-PCR) was used to detect the expression levels of lncRNA NR2F2-AS1 and miR-129-5p in tissue samples. The correlation between the two indexes and the relationship between the expression changes of the two and clinicopathological parameters of glioma patients were analyzed. Kaplan Meier curve was used to analyze the 5-year cumulative survival rate of glioma patients with different expression levels of lncRNA NR2F2-AS1 and miR-129-5p. Cox regression analysis was used to analyze the factors affecting the poor prognosis of glioma patients.Results:Compared with normal brain tissue, the relative expression of lncRNA NR2F2-AS1 in glioma was higher and the relative expression of miR-129-5p was lower (all P<0.05). There was significant negative relationship between the relative expression of lncRNA NR2F2-AS1 and miR-129-5p in glioma ( r=-0.756, P<0.05). The expression of lncRNA NR2F2-AS1 and miR-129-5p in glioma was related to World Health Organization (WHO) grade and tumor length (all P<0.05). The 5-year cumulative survival rate of patients in lncRNA NR2F2-AS1<2.89 group was higher than that in lncRNA NR2F2-AS1≥2.89 group, and the 5-year cumulative survival rate of patients in miR-129-5p<0.55 group was lower than that in miR-129-5p≥0.55 group (all P<0.05). Multivariate analysis showed that high expression of lncRNA NR2F2-AS1, low expression of miR-129-5p, WHO grade Ⅲ-Ⅳ and tumor length were the risk factors affecting the prognosis of patients with glioma (all P<0.05). Conclusions:The increased expression of lncRNA NR2F2-AS1 and the decreased expression of miR-129-5p in glioma tissues are involved in the clinical biological progress of glioma and are closely related to the prognosis of patients.
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Glioma is a common tumor in the central nervous system. Because the natural immunosuppression of tumor microenvironment is conducive to tumor growth, transformation and migration, the traditional treatment has little effect and is difficult to make a breakthrough. Glioma-associated microglia and macrophage (GAM), an important part of brain tumor microenvironment, plays a more and more key role in tumor progression and regulation of anti-tumor immune response. This article reviews the latest progress of the source, recruitment, polarization and the role in development of gliomas as well as potential therapeutic targets of gliomas.
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Objective To retrospective analysis of the clinical effect and complications of the semi-laminectomy approach on the treatment of intra-spinal tumor.To summarize the endoscopic treatment experience of intra-spinal tumor.Methods To retrospective analysis of the clinical data of 24 cases with intra-spinal tumor in Shanxi Provincial People's Hospital from January 2008 to September 2015.The diagnosis of the intra-spinal tumor was confirmed by preoperative MRI examination.Intraoperative application of endoscopic surgery in the resection of tumor.Longterm followed up of patient was implemented and observe the efficacy and complications after surgery.Results Postoperative symptoms of all patients have different degrees of improvement,the degrees of sensory disorder was reduce,the limb muscle strength was increased and alleviate the damages of nerve electrophysiology.No serious complications were found after operation.Of the 24 patients,17 cases were total resection of the tumor and 7 cases were subtoal resection of the tumor.Tethered cord release was operated in patients with tethered spinal cord.Conclusions Endoscopic resection assisted semi-laminectomy approach of intra-spinal tumor has slight damage to the surround structures and the impact to the anatomy of the spine was small.Endoscopic assisted semi-laminectomy approach may have siginficant clinical effect on intra-spinal tumor,and have good security.
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Objective To study the clinical application value of microsurgery in treatment of tentorium meningioma.Methods 53 patients with tentorium meningioma were chosen,they all underwent microsurgical treatment,the extent of resection of the tentorium meningioma and treatment efficacy were observed.The mortality,causes of death of tentorium meningioma patients after microsurgery were analyzed.Spitzer index was compared before and after treatment,the life quality of the patients was evaluated.Results There was no death after microsurgical treatment.The tentorium meningioma tumor removal rate was huge tumor ＜ tumors ＜ medium-sized tumors ＜ small tumor.There were 9 cases excellent,14 cases good in Spitzer index before treatment,26 cases excellent,14 cases good after treatment,there was significant difference between them (x2 =19.15,P ＜ 0.01).Conclusion Microsurgical treatment for the patients with tentorium meningioma has better clinical efficacy and can greatly improve patients' quality of life,which is worthy of further clinical research and promotion.
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Objective To observe the application of the mini-mental status examination (MMSE)cognitive assessment in the patients with brain glioma before and after surgery. Methods Using MMSE,36 pastients with primary brain glioma were subjected to the cognitive assessment before surgery, after surgery,and 3 monthsr after surgery. Results The quantitative cognitive assessments with MMSE before surgery revealed the hidden cognitive dysfunction patients.The quantitative cognitive assessments after surgery showed that surgeons might need to protect the non-function area and to form the idea of cognitive function in patients with glioma.Conclusion MMSE assessment is a simple,understandably,and convenient method having good compliance of patient. It may be effectively used to assess cognitive impairment for patients with glioma and worth being studied continuously and used widely in the clinic practice.
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Objective To construct a new recombinant immunotoxin expression vector by using human VEGF165 and a truncated pseudomonas exotoxin A ramification (PE38) gene, and explore the expression of the VEGF165-PE38 fusion protein in HEK293 cells. Methods VEGF165 was cloned by polymerase chain reaction (PCR). PE38 gene was gained from an vector plasmid pRB391 by restriction endonuclease digestion, and then inserted to the eukaryotic expression vector pIRES2-EGFP. After the eukaryotic recombinant vector pIRES2-VEGF165-PE38-EGFP was identified by restriction endonuclease digestion and sequence analysis, the vector was transfected into HEK293 cells by liposome protocol. RT-PCR and ELISA method was used to confirm the expression of the fusion gene in the HEK293 cells. Results Restriction endonuclease digestion and sequence analysis revealed the VEGF165-PE38 fusion gene was cloned into the eukaryotic expression plasmid vector pIRES2-EGFP successfully. The pIRES2-VEGF165-PE38-EGFP fusion gene could express in the HEK293 cells. Conclusion The result provide the basis for search of the targeted cytotoxic activity to tumor vascular endothelial cells and may have some potential value in clinical application.
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Laser scanning confocal microscopy is a strong suppoR tool in the study of morphons,fluorescence positioning,quantitative analysis and function.It has been widely used in biomedical research in various fields.This paper summarizes the domestic research applications of laser scanning confocal microscope in glioma.
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OBJECTIVE@#To investigation the clinic long-term result and explore the prognostic factor of patients with laryngectomy.@*METHOD@#Three hundred and fifteen patients with laryngectomy were analysed. The survival rate and the cause of death were collected from this study.@*RESULT@#Five years later, 233 cases were still alive, 60 cases were dead, 22 cases failed to be followed-up. Overall 5-year survival rate was 73.97%, 5-year survival rate for patients of early stage was 82.69. Whereas, for patients of late stage was 62.64%. Five year survival rate for patients of supraglottic carcinoma, glottic carcinoma, subglottic carcinoma and transglottic carcinoma was respectively 73.76%, 82. 55%, 55.56%, 68.75%. Five year survival rate for patients with partial laryngectomy was 79.89%, whereas, for total laryngectomy was 1.03%. The cause of death were local recurrence and cervical glands metastasis.@*CONCLUSION@#Early diagnosis was the key points to both larynx preservation and survival rate. for improving survival rate, we should handle the indications strictly. remain sufficient security cutting edge and follow-up visit.