1.Construction and Validation of Risk Prediction Model for Venous Thromboembolism After Glioma Surgery
Liyi DENG ; Yush-Un ZHANG ; Lei WANG
Journal of Medical Research 2024;53(7):51-56
		                        		
		                        			
		                        			Objective To analyze the risk factors of postoperative complication of venous thromboembolism(VTE)in glioma pa-tients,and to construct Nomogram model.Methods The clinical data of 401 glioma patients admitted to the Affiliated Hospital of Xuzhou Medical University from September 2018 to April 2023 were collected,and the risk factors of VTE in glioma were explored using univariate analysis and multivariate Logistic regression analysis.After constructing the Nomogram model,the discriminative efficacy of the model was examined using the receiver operating characteristic(ROC)curve,the calibration degree of the model was evaluated by calibration curve,the calibration curve was examined by the Hosmer-Lemeshow goodness-of-fit test,the model was internally validated using the Boot-strap self-sampling method,and the clinical benefit was analyzed by the decision curve analysis(DC A).Results Logistic regression a-nalysis showed that age,body mass index,platelets,leukocytes,D-dimer,and IDH phenotype were independent risk factors for the oc-currence of VTE after glioma surgery;the Nomogram model predicted that the area under the ROC curve for the occurrence of VTE after glioma surgery was 0.898;the calibration curves,C-index,and external validation suggested that the model had a high degree of accura-cy,and the DCA showed that the model had good clinical validity.Conclusion The prediction model constructed based on the risk fac-tors for postoperative VTE in glioma patients in this study was internally and externally validated,showing good diagnostic efficacy and pro-viding a basis for clinical decision-making.
		                        		
		                        		
		                        		
		                        	
2.A phantom study of the effect of deviation from isocentric points on CT image quality
Lingming ZENG ; Han DENG ; Qin LYU ; Tao HUANG ; Liyi HE ; Libo CAO ; Zhenlin LI
Chinese Journal of Radiology 2022;56(11):1237-1241
		                        		
		                        			
		                        			Objective:To investigate the effect of deviation from the isocenter point on the quality of CT images at the same radiation dose.Methods:A 160-layer CT scanner was used to scan the phantom at isocenter and deviations of 3, 6, 9, 12 and 15 cm. CT was performed with the following parameters: 120 kVp; 400 mAs; slice thickness, 1 mm; and slice increment, 1 mm. Images were reconstructed using the filtered back projection algorithm. Noise power spectrum (NPS), task transfer function (TTF) and detectability index (d′) were measured. NPS peak was used to quantify the noise magnitude and TTF 50% was used to quantify the spatial resolution. NPS, TTF and d′ were compared using one-way ANOVA. Results:The NPS average spatial frequency, spatial resolution and d′ values gradually decreased as the offset distance increased and the amount of noise increased. NPS peak at isocenter and deviations of 3 cm, 6 cm, 9 cm, 12 cm and 15 cm were (94.31±1.48), (104.25±1.46), (131.44±1.96), (171.86±1.91), (224.05±1.37), (286.51±2.09)HU 2·mm 2, respectively ( F=37 241.91, P<0.001). And d′ values of 2 mm low-contrast lesions were 3.51±0.06, 3.31±0.04, 3.01±0.04, 2.59±0.06, 2.21±0.03, 1.88±0.03, respectively. The reduction in spatial resolution was more pronounced for high contrast, and the d′ values decreased to a similar extent for various types of lesions. The noise was increased by about 82%, the high contrast spatial resolution was decreased by about 12%, and the d′ value was decreased by about 26% at 9 cm from the isocenter point (all P<0.05). The noise was increased by about 204%, the high contrast spatial resolution was decreased by about 27%, and the d′ value was decreased by about 45% at 15 cm from the isocenter (all P<0.05). Conclusion:The CT image quality was decreased with the increase of the offset distance from the CT isocenter point. The image quality was severely compromised at offset distances greater than 9 cm.
		                        		
		                        		
		                        		
		                        	
3.Therapeutic Observation of Hypersalivation in Cerebral Palsy Predominantly Treated with Acupuncture at Three Tongue Points plus Tuina
Ning DENG ; Xiaoyu WANG ; Liyi QIU
Shanghai Journal of Acupuncture and Moxibustion 2016;(1):8-10
		                        		
		                        			
		                        			Objective To observe the clinical efficacy of acupuncture at the three tongue points plus tuina in treating hypersalivation in cerebral palsy.Method Sixty patients with hypersalivation due to cerebral palsy were randomized into a treatment group and a control group, 30 cases in each group. The treatment group was intervened predominantly by acupuncture at the three tongue points plus tuina, while the control group was by tuina alone. The clinical efficacies were compared between the two groups.Result The total effective rate was 96.7% in the treatment group versus 83.3% in the control group, and the difference was statistically significant (P<0.05).Conclusion Acupuncture at the three tongue points plus tuina is an effective approach in treating hypersalivation in cerebral palsy.
		                        		
		                        		
		                        		
		                        	
4.A comparative study on the effect of BCG-PSN and thymopeptides on T-lymphocyte subsets of normal and immunosuppressed mice.
Yunhua DENG ; Yingling CHEN ; Xingping CHEN ; Yongxi LI ; Liyi ZHOU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2003;23(4):339-347
		                        		
		                        			
		                        			To compare the effects of polysaccharide nucleic acid fraction of bacillus calmette guerin (BCG-PSN) and thymopeptides on T-lymphocytes of normal and immunosuppressed mice, CD4+ and CD8+ T-lymphocyte subsets of single nucleic cell in thymus, spleen and peripheral blood were detected successively by flow cytometry after application of BCG-PSN and thymopeptides. Meanwhile, CD4+/CD8+ ratio was also calculated. The results showed that both BCG-PSN and thymopeptides could decrease the proportion of CD4+ CD8+ T-lymphocyte subsets in the thymus, at the same time increase CD4+ T-lymphocyte, CD8+ T-lymphocyte proportion in the three tissues. The fluctuation in amplitude was greater in thymopeptides group than that in BCG-PSN group. It is concluded that acting location of thymopeptides is in thymus, its stimulating action is stronger than that of BCG-PSN, while BCG-PSN not only accelerates the differentiation in thymus, but also has some direct stimulation to peripheral CD4+ T-lymphocytes, and can maintain CD4+/CD8+ ratio within normal range. So, BCG-PSN is safer.
		                        		
		                        		
		                        		
		                        			Adjuvants, Immunologic
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Immunocompromised Host
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Mice
		                        			;
		                        		
		                        			Mycobacterium bovis
		                        			;
		                        		
		                        			chemistry
		                        			;
		                        		
		                        			Nucleic Acids
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Peptide Fragments
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Polysaccharides, Bacterial
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			T-Lymphocyte Subsets
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Thymus Gland
		                        			;
		                        		
		                        			chemistry
		                        			
		                        		
		                        	
5.A comparative study on the effect of BCG-PSN and thymopeptides on T-lymphocyte subsets of normal and immunosuppressed mice.
Yunhua, DENG ; Yingling, CHEN ; Xingping, CHEN ; Yongxi, LI ; Liyi, ZHOU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2003;23(4):339-43, 347
		                        		
		                        			
		                        			To compare the effects of polysaccharide nucleic acid fraction of bacillus calmette guerin (BCG-PSN) and thymopeptides on T-lymphocytes of normal and immunosuppressed mice, CD4+ and CD8+ T-lymphocyte subsets of single nucleic cell in thymus, spleen and peripheral blood were detected successively by flow cytometry after application of BCG-PSN and thymopeptides. Meanwhile, CD4+/CD8+ ratio was also calculated. The results showed that both BCG-PSN and thymopeptides could decrease the proportion of CD4+ CD8+ T-lymphocyte subsets in the thymus, at the same time increase CD4+ T-lymphocyte, CD8+ T-lymphocyte proportion in the three tissues. The fluctuation in amplitude was greater in thymopeptides group than that in BCG-PSN group. It is concluded that acting location of thymopeptides is in thymus, its stimulating action is stronger than that of BCG-PSN, while BCG-PSN not only accelerates the differentiation in thymus, but also has some direct stimulation to peripheral CD4+ T-lymphocytes, and can maintain CD4+/CD8+ ratio within normal range. So, BCG-PSN is safer.
		                        		
		                        		
		                        		
		                        			Adjuvants, Immunologic/*pharmacology
		                        			;
		                        		
		                        			 Immunocompromised Host
		                        			;
		                        		
		                        			 Mycobacterium bovis/*chemistry
		                        			;
		                        		
		                        			 Nucleic Acids/pharmacology
		                        			;
		                        		
		                        			 Peptide Fragments/*pharmacology
		                        			;
		                        		
		                        			 Polysaccharides, Bacterial/*pharmacology
		                        			;
		                        		
		                        			 T-Lymphocyte Subsets/*drug effects
		                        			;
		                        		
		                        			 Thymus Gland/chemistry
		                        			
		                        		
		                        	
            
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