ABSTRACT
Objective:To explore the clinical application of NanoString fluorescent barcode technology in the molecular subtyping of diffuse large B-cell lymphoma (DLBCL), and to analyze the correlation between the cell-of-origin subtype and prognosis of patients.Methods:The tumor tissue samples of 12 patients with DLBCL at the Third People's Hospital of Datong of Shanxi Province and 8 patients with DLBCL at Peking University, Health Science Center between January 2014 and December 2019 were collected. According to Hans algorithm, all patients were divided into 1 case of germinal center-derived B-cell (GCB) type and 19 cases of non-GCB type. NanoString platform was used to analyze the expression level differences of 15 genes-related to Lymph2Cx molecular subtyping of all samples at mRNA level. Hierarchical clustering was used to subgroup 20 DLBCL cases and to contrast the prognosis in different subgroups according to the subtyping.Results:NanoString fluorescent barcode technology was used to detect samples of 20 DLBCL cases and hierarchical clustering analysis was performed, and then subtyping results showed that 11 cases were GCB-like type and 9 cases were activated B cell (ABC)-like type. Based on Hans algorithm, 10 GCB-like cases were non-GCB type. According to the survival analysis, GCB-like group had a better overall survival compared with that in ABC-like group ( P=0.019). Conclusion:NanoString fluorescent barcode technology can be successfully applied to the cell-of-origin subtyping of DLBCL, and the molecular subtyping strategy can effectively predict the prognosis of patients.
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Objective To study the influence of conflict vessels of trigeminal neuralgia (TN) in microvascular decompression (MVD) efficacy.Methods The clinical data of 86 patients accepted MVD for TN,admitted to our hospital from July 2008 to August 2012,were retrospectively analyzed.According to the number of offending vessels under intranperative microscope,the patients were divided into single offending vessel group and multi-offending vessels group;the clinical features,distributions of offending vessels,imaging results and surgical findings of the two groups were compared.Results Forty-nine patients (57.0％) were enrolled to single offending vessel group,and 37 (43.0％) were enrolled to multi-offending vessels group;ratio of offside pain was higher than that of left side in both two groups.Conflict vessels in the single offending vessel group mainly were superior cerebellar artery (SCA,n=29,59.2％) and anterior inferior cerebellar artery (AICA,n=19,38.8％);conflict vessels in the multi-offending vessels group mainly were SCA+AICA (n=21,56.8％) and SCA+ petrosal vein (n=8,21.6％).Follow-up at 6 months after the operation showed an efficient outcome of 96.5％:the effective rate of single offending vessel group was 98.0％ while that of multi-offending vessels group was 94.6％ with significant difference(x2=0.003,P=0.958).No mortality or severe complications,such as hearing loss,cerebellar bleeding or cerebellar infarction,were recorded.Conclusions MVD is a safe and effective treatment for TN.MVD on multiple conflict vessels TN and that on single conflict vessel TN have approximate efficacy.
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Objective To investigate the influence of the radical resection and the optic canal unroofing on the postoperative vision in the patients with tuberculm region meningeal tumors.Matheods A retrospective analysis was made in 44 patients with tuberculm region meningeal tumors,from January 2010 to October 2012.The clinical data including the Simpson grades,adhesion between tumor and the surrounding structures,optic canal decompression,and postoperative vision were studied,and followed-up.Results In all 44 cases,there were 31 patients with Simpson grade Ⅰ resection,their postoperative vision of 17 patients were improved,eleven unchanged,and 3 worse.Out of them,tumors showed more adhesive in 9 cases,unroofed the optic canal in 17 cases.There were 13 cases in the other group including 8 cases with Simpson grade Ⅱ and 5 cases with Simpson grade Ⅲ,their postoperative vision of 8 patients were improved,four unchanged,and 1 worse.Out of them,tumors showed more adhesive to the surroundings in 10 cases,unroofed the optic canal in 3 cases.There were no different postoperative vision among the Simpson grades by the Chi-Square test (P ＞ 0.05).The less adhesive of the meningeal tumors,the better resection grade would be (P ＜ 0.05).And unroofed the optic canal group showed better postoperative vision than the not unroofed ones (P ＜ 0.05).Conclusion In the tuberculum region meningeal tumors,the Simpson resection grade was related to adhesion between the meningeal tumors and the surroundings,not to postoperative vision.The optic canal decompression can improve their visual outcome in some cases.