1.Intra-and peri-tumoral radiomics model for predicting the response to concurrent chemoradiotherapy in cervical squamous cell carcinoma based on dynamic contrast-enhanced MRI
Yaying SU ; Dan ZHAO ; Zhiying PANG ; Fei YANG ; Shujun CUI
Journal of Practical Radiology 2024;40(3):411-416
Objective To investigate the correlation between intra-and peri-tumoral radiomics features and the response to con-current chemoradiotherapy(CCRT)in cervical squamous cell carcinoma,and to explore the difference of predictive performance between 2D and 3D radiomics models.Methods The imaging data of 132 patients were analyzed retrospectively and randomly divided into training set(n=92)and validation set(n=40).Radiomics features were extracted based on the dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI),the correlation analysis and least absolute shrinkage and selection operator(LASSO)algorithm were used for dimensionality reduction and screening,then the radiomics score was calculated and the logistic model was constructed.The receiver operating characteristic(ROC)curve,internal validation of Bootstrap and Brier score were used to evaluate the discrimina-tion and calibration of the model,and the improvement in predictive performance of 3D model compared with 2D model was evaluated by the integrated discrimination improvement(IDI).Results In the training set,the ROC curve showed that the area under the curve(AUC)of the models(2D-intratumoral,3D-intratumoral,3D-peritumoral,3D-combined)ranged from 0.774 to 0.893.The internal validation of Bootstrap showed the AUC were 0.772,0.860,0.847 and 0.888,respectively,while in the validation set,the AUC were 0.757,0.849,0.824 and 0.887,respectively.The Brier scores indicated that the models were well calibrated.In the training set and the validation set,the IDI values were 0.155 and 0.179,respectively,and the differences were statistically significant(P<0.05).Conclusion The radiomics analysis based on the tumor volume can fully explore the tumor heterogeneity.The intra-and peri-tumoral radiomics combined model shows the best predictive performance,which is important to assist clinicians in developing individualized therapies.
2.Effect of botulinum toxin type a in congenital muscular torticollis
Zhenmin SU ; Chenghe WANG ; Wenxiong LIN ; Yaying WU ; Changjiang LIU ; Shuping YU
Chinese Journal of Medical Aesthetics and Cosmetology 2021;27(5):419-423
Objective:To discuss the clinical results of treatment for congenital muscular torticollis with different injection points of botulinum toxin type A and traditional conservative method, and to expound the safety and effectiveness of this way.Methods:From January 2018 to December 2018, 60 cases aged from one month to six months with congenital muscular torticollis who visited the outpatient clinic of plastic surgery in Children's Hospital of Quanzhou, a teaching hospital of FuJian Medical University, and there were 38 males and 22 females. The treatment groups were divided into two groups according to random number method that were treated with botulinum toxin type A: the single point group was given one point injection, and the three-point group was injected with three points, while the control group was treated with traditional conservative treatment (mainly manual stretching exercises). The number of cases in each group was 20.Results:The differences of muscle thickness and muscle length were repeatedly measured at different time points in the same group and variance analysis conducted. The results showed that there were statistical significances among the two indicators at different time points in each group ( P<0.05). Least significant difference (LSD) was further adopted for pairwise comparison between indicators at different time points in each group and the differences were statistically significant ( P<0.05). In the comparison of treatment effect of different groups after twelve months follow-up, the cure rate was 85% (17 cases) in the single point group, 95 % (19 cases) in the three-point group, and 80 % (16 cases) in the control group, there was no significant difference among three groups ( P>0.05). Conclusions:Local injection of botulinum toxin type A is a safe and effective treatment option for congenital muscular torticollis, which can achieve the same clinical effect as traditional conservative treatment.
3.Analysis of the chloroplast genome of Incarvillea younghusbandii Sprague.
Yaying ZHANG ; Wanyao JIAO ; Wenrui JIAO ; Tianle QIAO ; Zhiyang SU ; Shuo FENG
Chinese Journal of Biotechnology 2023;39(7):2954-2964
Incarvillea younghusbandii Sprague is a traditional tonic herb. The roots are used as herbal medicine for nourishing and strengthening, as well as treating postpartum milk deficiency and weakness. In this study, the chloroplast genome of I. younghusbandii was sequenced and assembled by the high-throughput sequencing technology. The sequence characteristics, sequence repeats, codon usage bias, phylogenetic relationships and estimated divergence time of I. younghusbandii were analyzed. The 159 323 bp sequence contained a large single copy (80 197 bp), a small single copy (9 030 bp) and two inverted repeat sequences (35 048 bp). It contained 120 genes, including 77 protein coding genes, 8 ribosomal RNA genes and 35 transfer RNA genes. AAA was the most frequent codon in the chloroplast coding sequence of I. younghusbandii. A total of 42 simple sequence repeats were identified in the chloroplast genome. Phylogenetic analysis revealed I. younghusbandii was mostly like its taxonomically close relative Incarvillea compacta. The divergence between I. younghusbandii and I. compacta was dated to 4.66 million years ago. This study was significant for the scientific conservation and development of resources related to I. compacta. It also provides a basic genetic resource for the subsequent species identification of the genus Incarvillea, and the population genetic diversity study of Bignoniaceae.
Phylogeny
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Molecular Sequence Annotation
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Genome, Chloroplast
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Sequence Analysis, DNA
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Whole Genome Sequencing