Ren L.,National Hepatobiliary and Enteric Surgery Research Center |
Chen L.,Central South University
Journal of Central South University (Medical Sciences) | Year: 2013
The TOPSIS Method is a static comprehensive evaluation method for wide range applications. However, it encounters the reverse order problem in practical applications. Moreover, its evaluation value C, only reflects the relative proximity of each evaluation object inside but not to the degree of closeness to the ideal optimal solution. The evaluation value is also limited to distinguish between the ranges of merit ranking. Since TOPSIS method has the wide range of applications, it is necessary to overcome the drawbacks of TOPSIS method. This article proposes a new improved TOPSIS method, which shows strict isotonicity and is more sensitive than the traditional TOPSIS method. The medical application based on this improved TOPSIS method is introduced.
Li F.,Central South University |
Peng J.,Central South University |
Hu R.,Central South University |
Dong X.,Central South University |
And 4 more authors.
Journal of Nanoscience and Nanotechnology | Year: 2013
The study was aimed to provide insights into the effect of nano-hydroxyapatite (nHA) suspension on cell proliferation and cycle of human periodontal ligament cells, offering the evidence for nHA being used in periodontal therapy. Human periodontal ligament cells (HPDLCs) were cultured in different concentrations of nano-hydroxyapatite/sodium carboxymethyl cellulose (nHA-CMCNa) suspension in vitro. After that, cell proliferation ability was examined by MTT [3(4,5-dimethylthiazol-2-yl)- 2,5-diphenyltetrazolium bromide] assay and flow cytometry. MTT assay demonstrated that the Relative Proliferation Rate (RPR) of 0.5% nHA-CMCNa group was significantly higher than other groups (p < 0.05), which means that nHA-CMCNa might increase cell proliferation ability. Flow cytometry showed that cells in G1 phase decreased, whilst cells in S phase increased after cultured in nHA-CMCNa suspension for 48 h. The result suggested that part of cells finished G1 phase in advance and get into S phase earlier, which speed up the cell proliferation. nHA-CMCNa suspension had great effect on cell proliferation. The high concentration of nHA-CMCNa could shorten the time in G1 phase, impel part of cells into S phase, and accelerate proliferation rate of HPDLCs. Copyright © 2013 American Scientific Publishers All rights reserved.
Zhang H.,National Hepatobiliary and Enteric Surgery Research Center |
Peng W.,National Hepatobiliary and Enteric Surgery Research Center |
Zhang Y.,National Hepatobiliary and Enteric Surgery Research Center
Journal of International Medical Research | Year: 2014
Objective: To investigate if the administration of neoadjuvant chemotherapy (NACT) reduces pelvic lymph node metastasis by inducing tumour cell apoptosis in patients with cervical cancer. Methods: This study enrolled patients with stage Ib2-IIb cervical cancer who underwent surgery with (NACT group) or without (control group) prior cisplatin-based chemotherapy. Immunohistochemical staining of caspase-3 and an in situ terminal deoxynucleotidyl transferasemediated deoxyuridine triphosphate nick end labelling assay were used to measure the levels of apoptosis in primary tumours and pelvic lymph nodes. Results: A total of 185 patients participated in the study: 102 in the NACT group and 83 in the control group. Treatment was considered to be clinically effective in 69.6% (71/102) of the NACT group. The rate of metastasis in the NACT group (20.6%; 21/102) was significantly lower than the control group (42.2%; 35/83). The level of caspase-3 immunostaining and the rate of apoptosis in primary tumours and pelvic lymph nodes in the NACT group were significantly higher than in the control group. Conclusions: NACTappeared to limit pelvic node metastasis by inducing tumour cell apoptosis in patients with cervical cancer. © The Author(s) 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.
Liu J.,Central South University |
Liu J.,National Hepatobiliary and Enteric Surgery Research Center |
Liao Q.,National Hepatobiliary and Enteric Surgery Research Center |
Zhang Y.,National Hepatobiliary and Enteric Surgery Research Center |
And 3 more authors.
Tumor Biology | Year: 2012
Many studies have investigated the association between Cyclin D1 (CCND1) G870A polymorphism and lung cancer risk, but the impact of CCND G870A polymorphism on lung cancer is unclear owing to the obvious inconsistence among those studies. This study aimed to quantify the strength of association between CCND1 G870A polymorphism and lung cancer risk. We searched the PubMed, Embase, and Wangfang databases for articles on studies relating the CCND1 G870A polymorphism to the risk of lung cancer in humans. We estimated summary odds ratios (ORs) with their confidence intervals (CIs) to assess the association. Meta-analyses of total studies showed that CCND1 G870A polymorphism was associated with lung cancer risk under three genetic models (OR A versus G = 1.13, 95 % CI 1.03-1.24; ORAA versus GG = 1.20, 95 % CI 1.07-1.35; ORAA versus AG + GG = 1.23, 95 % CI 1.02-1.50). Meta-analyses of studies with high quality showed that CCND1 G870A polymorphism was associated with lung cancer risk under two genetic models (ORA versus G = 1.08, 95 % CI 1.02-1.15; ORAA versus GG = 1.17, 95 % CI 1.04-1.32). Subgroup analyses by ethnicity and sensitivity analyses further identified the significant association above. No evidence of publication bias was observed. Meta-analyses of available data show a significant association between the CCND1 G870A polymorphism and lung cancer risk, and CCND1 G870A polymorphic variant A contributes to increased risk of lung cancer. © 2012 International Society of Oncology and BioMarkers (ISOBM).