Jiang Z.,Bengbu Medical College |
Gui S.,Beijing Tiantan Hospital |
Zhang Y.,Beijing Neurosurgical Institute
Journal of Neuro-Oncology | Year: 2012
Plurihormonal pituitary adenomas (PHPAs) are defined as those pituitary adenomas secreting two or more hormones that differ in chemical composition, immunoreactivity, and biologic effects. Since the pathogenesis of these adenomas is not well understood, our study aimed to explore mechanisms underlying the pathogenesis of PHPAs. We used bead-based fiber-optic arrays (Illumina Human GeneChip WG-6 v3.0) to examine the gene expression profiles in seven PHPAs compared with three normal pituitary glands. Four differentially expressed genes were chosen randomly for validation by quantitative real-time reverse-transcription polymerase chain reaction. We then performed pathway analysis of all differentially expressed genes using the Kyoto Encyclopedia of Genes and Genomes. Our array analysis showed significant increases in the expression of 6 genes and decreases in 334 genes and 15 expressed sequence tags in the PHPAs. Bioinformatic analysis showed that genes HIGD1B, EPS8, ECT2, and BTG2 might play an important role in the tumorigenesis and progression of PHPAs. Pathway analysis showed that the p53 and Notch signaling pathways may play an important role in tumorigenesis and progression of PHPAs, and extracellular matrix (ECM)-receptor interactions likely play a role in the inhibition of invasion and metastasis in these tumors. Our data suggested that there are numerous aberrantly expressed genes and pathways involved in the pathogenesis of PHPAs. Bead-based fiber-optic arrays combined with pathway analysis of gene expression data appears to be a valid method for investigating the pathogenesis of tumors. © 2012 Springer Science+Business Media, LLC. Source
Gregson B.A.,Northumbria University |
Broderick J.P.,University of Cincinnati |
Batjer H.,Northwestern University |
Chen X.-C.,Fudan University |
And 7 more authors.
Stroke | Year: 2012
Background and Purpose-: By 2010 there had been 14 published trials of surgery for intracerebral hemorrhage reported in systematic reviews or to the authors, but the role and timing of operative intervention remain controversial and the practice continues to be haphazard. This study attempted to obtain individual patient data from each of the 13 studies published since 1985 to better define groups of patients that might benefit from surgery. Methods-: Authors of identified published articles were approached by mail, e-mail, and at conferences and invited to take part in the study. Data were obtained from 8 studies (2186 cases). Individual patient data included patient's age, Glasgow Coma Score at presentation, volume and site of hematoma, presence of intraventricular hemorrhage, method of evacuation, time to randomization, and outcome. Results-: Meta-analysis indicated that there was improved outcome with surgery if it was undertaken within 8 hours of ictus (P=0.003), or the volume of the hematoma was 20 to 50 mL (P=0.004), or the Glasgow Coma Score was between 9 and 12 (P=0.0009), or the patient was aged between 50 and 69 years (P=0.01). In addition, there was some evidence that more superficial hematomas with no intraventricular hemorrhage might also benefit (P=0.09). Conclusions-: There is evidence that surgery is of benefit if undertaken early before the patient deteriorates. This work identifies areas for further research. Ongoing studies in subgroups of patients such as the Surgical Trial in Lobar Intracerebral Hemorrhage (STICH II) will confirm whether these interpretations can be replicated. © 2012 American Heart Association, Inc. Source
Li S.,Capital Medical University |
Li S.,Beijing Neurosurgical Institute |
Yan C.,Capital Medical University |
Huang L.,Capital Medical University |
And 4 more authors.
Neuro-Oncology | Year: 2012
The increased chemosensitivity of oligodendroglial tumors has been associated with loss of heterozygosity (LOH) on chromosomes 1p and 19q. Other clinical and molecular factors have also been identified as being prognostic and predictive for treatment outcome. Seventy-seven patients with anaplastic oligodendroglioma (AO) or anaplastic oligoastrocytoma (AOA), treated in Beijing Tiantan Hospital from 2006 through 2008, were reviewed. LOH 1p, LOH 19q, IDH1 mutation, O(6)-methylguanine-DNA methyltransferase (MGMT) promoter methylation, and protein expression level of MGMT, P53, EGFR, and Ki-67 were evaluated. Age at diagnosis, LOH 1p and 19q, IDH1 mutation, P53 expression level, reoperation when progression, and adjuvant chemotherapy were statistically significant factors for overall survival (OS) in univariate analysis. Further multivariate analysis showed that age at diagnosis (P 5 .010), LOH 1p and 19q (P 5 .016), IDH1 mutation (P 5 .011), and reoperation after progression (P 5 .048) were independent predictors for longer survival in these patients. Nonrandom associations were found between LOH 1p and LOH 19q, MGMT promoter methylation and LOH 1p or 19q, IDH1 mutation and LOH 1p and 19q, IDH1 mutation and MGMT promoter methylation, whereas mutual exclusion was found between MGMT promoter methylation and MGMT expression level. The present study confirmed that age at diagnosis, LOH 1p and 19q, IDH1 mutation, and reoperation after progression were independent significant prognostic factors for patients with anaplastic oligodendroglial tumors. Inter-relationship between LOH 1p, LOH 19q, IDH1 mutation, MGMT promoter methylation, and MGMT expression level were also revealed. Future clinical trials for AO and AOA should consider the molecular alterations of patients. © The Author(s) 2011. Source
Hu W.-H.,Beijing Neurosurgical Institute |
Zhang C.,Capital Medical University |
Zhang K.,Capital Medical University |
Meng F.-G.,Beijing Neurosurgical Institute |
And 3 more authors.
Journal of Neurosurgery | Year: 2013
Object: Whether selective amygdalohippocampectomy (SelAH) has similar seizure outcomes and better neuropsychological outcomes compared with anterior temporal lobectomy (ATL) is a matter of debate. The aim of this study was to compare the 2 types of surgery with respect to seizure outcomes and changes in IQ scores. Methods: PubMed, Embase, and the Cochrane Library were searched for relevant studies published between January 1990 and September 2012. Studies comparing SelAH and ATL with respect to seizure and intelligence outcomes were included. Two reviewers assessed the quality of the included studies and independently extracted the data. Odds ratios and standardized mean deviations with 95% confidence intervals were used to compare pooled proportions of freedom from seizures and changes in IQ scores between the SelAH and ATL groups. Results: Three prospective and 10 retrospective studies were identified involving 745 and 766 patients who underwent SelAH and ATL, respectively. The meta-analysis demonstrated a statistically significant reduction in the odds of seizure freedom for patients who underwent SelAH compared with those who underwent ATL (OR 0.65 [95% CI 0.51-0.82], p = 0.0005). The differences between the changes in all IQ scores after the 2 types of surgery were not statistically significant, regardless of the side of resection. Conclusions: Selective amygdalohippocampectomy statistically reduced the odds of being seizure free compared with ATL, but the clinical significance of this reduction needs to be further validated by well-designed randomized trials. Selective amygdalohippocampectomy did not have better outcomes than ATL with respect to intelligence. © AANS, 2013. Source
Beijing Neurosurgical Institute and Beijing Institute For Brain Disorders | Date: 2015-07-15
The present invention provides an artificial synthetic cDNA (complementary deoxyribonucleic acid). The said artificial synthetic cDNA encodes a fused protein which is specifically presented in secondary glioblastoma, and the said artificial synthetic cDNA can be used as a biomarker for detecting the secondary glioblastoma. The present invention further provides a method for detecting secondary glioblastoma. According to the above technical solutions, the accuracy in distinguishing the secondary glioblastoma from primary glioblastoma is effectively improved in the present invention.