Objective:To investigate the correlation between bronchial wall thickness that was determined by high-resolution computed tomography(HRCT)on lung,and pulmonary function and curative efficacy of patients with chronic obstructive pulmonary disease(COPD).Methods:From January 2020 to December 2022,a total of 154 COPD patients were retrospectively selected as the observation group.According to the indicator of the percentage of forced expiratory volume in the first second(FEV1%),the patients were divided into high-risk group(grade Ⅰ,n=51),mild group(grade Ⅱ,n=45),moderate group(grade Ⅲ,n=35)and severe group(grade Ⅳ,n=23)as the 2023 global initiative for chronic obstructive lung disease(GOLD)scale.At the same time,67 healthy subjects were selected as healthy control group.All of them underwent HRCT scan on their chest,and the thickness of the bronchial wall at the opening of the bronchus of bilateral lung apex was measured.The percentage of forced expiratory volume at the first second(FEV1%),forced expiratory volume at the first second(FEV1)and FEV1/forced vital capacity(FEV1/FVC%)(percentage of forced vital capacity)were measured by the pulmonary function apparatus.Pearson correlation analysis software was used to analyze the correlation between bronchial wall thickening and lung function and curative efficacy.Results:The left bronchial wall thickness(1.49±0.21)mm and the right bronchial wall thickness(1.52±0.24)mm in the observation group were higher than those in the healthy control group(t=18.041,15.504,P<0.05),respectively.In the observation group,the higher GOLD grading of the subgroup has higher thickness at the left and right sides of bronchial walls,and there were also significant differences at the thicknesses of bilateral bronchial walls among different grading groups(F=13.888,25.841,P<0.05),respectively.The FEV1(1.82±0.32),FEV1/FVC%(63.09±5.26)and FEV1%(63.36±6.03)in COPD patients of the each subgroup of observation group were lower than those of healthy control group,and the differences were statistically significant(t=6.693,15.392,7.944,P<0.05),respectively.In the observation group,patients with higher GOLD grade has lower decreasing level of the FEV1,FEV1/FVC%and FEV1%,and there were statistically significant differences in pulmonary function levels among the subgroups of the observation group(F=166.541,141.751,57.120,P<0.05),respectively.The results of Pearson correlation analysis showed that the left and right sides of bronchial wall thickening of HRCT scan on COPD patients were positively correlated with FEV1,FEV1/FVC%and FEV1%levels of pulmonary function in COPD patients(r=0.451,0.503,0.498,0.531,0.488.0.515,P<0.05),respectively.Conclusion:The thickness of bronchial wall of HRCT scan images on lung appears high expression in COPD patients,and its expression level can reflect the severity of patients'disease,and has a strong correlation with pulmonary function.

Objective:To explore the value of the classifier model based on CT radiomic characteristics in predicting the activity of pulmonary cystic echinococcosis (CE).Methods:The study was designed as cross-sectional. A retrospective analysis was performed on 81 patients diagnosed with pulmonary CE in the First Affiliated Hospital of Xinjiang Medical University from January 2010 to October 2020. The Python function divided 17 cases into an internal verification group and 64 cases into a training group with a ratio of 2∶8. In addition, 16 patients diagnosed with pulmonary CE from the Fourth Affiliated Hospital of Xinjiang Medical University from October 2020 to 2024 were included in the external validation group. All patients underwent CT examination, and radiomics features were extracted using Radcloud platform of Huimedi Huiying. The intraclass correlation coefficient was performed on the features, then feature screening was performed using the SelectKBest method, variance thresholding method, and least absolute shrinkage and selection operator. Finally, three classifiers (including support vector machine (SVM), K-neighborhood (KNN), and logistic regression (LR)) were used to build the models. The receiver operating characteristic curve and area under the curve (AUC) were used to evaluate the model′s efficiency.Results:Among 81 patients with lung CE, 58 were male, and 23 were female. twenty-eight lesions were active and 53 were inactive. A total of 11 optimal features were selected. Based on the selected features, the SVM classifier model, KNN classifier model, and LR classifier model were established. The KNN classifier model in the training group had the highest AUC value (0.93) and the highest specificity (0.98) in predicting lung CE activity. In the internal validation group, the SVM classifier model had the highest AUC value (0.92) and the highest specificity (0.91) in predicting lung CE activity. The LR classifier model performed best with the highest AUC of 0.85 for predicting lung CE activity in the external validation group, and the specificity of the three models was 0.92.Conclusion:The classifier model established based on CT radiomic features has a certain value in predicting lung CE activity, and may be helpful in clinical decision-making.

Cysteine protease inhibitor 1 (CST1) is a member of type 2 Cystatins superfamily, plays a key role in targeted regulation. CST1 is highly expressed in gastric cancer, promotes tumor cell migration and invasion by activating the epithelial-mesenchymal transformation pathway and Wnt pathway, and regulates tumor growth and progression in combination with the corresponding target genes of homeobox C10 and glutathione peroxidase 4. A deeper understanding of the role and function of CST1 in gastric cancer will help to further develop potential therapeutic targets and diagnostic and prognostic markers for gastric cancer.

Forkhead box protein A2 (FOXA2) , characterized by its unique DNA binding domain, plays a key role in transcriptional regulation. FOXA2 transcription factor is highly expressed in colorectal cancer, and binds with corresponding targeted genes to regulate tumor growth and inflammatory response, thus playing the role of oncogenes. In-depth understanding of the role and function of human FOXA2 transcription factor in colorectal cancer will contribute to further development of FOXA2 as a potential therapeutic target and diagnostic and prognostic marker of colorectal cancer.

Objective:To evaluate the clinical efficacy and safety of endoscopic submucosal dissection (ESD) for treatment of duodenal lesions.Methods:A retrospective analysis was performed on the data of 45 patients with 46 duodenal lesions who underwent ESD at the Second Xiangya Hospital of Central South University from January 2011 to May 2019. The lesion features, en bloc resection rate, complete resection rate, complications, postoperative pathology and recurrence were assessed.Results:Among the 45 patients, 20 were males and 25 were females, with age of 52.0±11.8 years. Of the 46 lesions, 31 (67.4%) were located in the duodenal bulb, 12 (26.1%) in the descending part, and 3 (6.5%) at the junction of bulb and descending part. The diameter of the lesions was 2.4±1.9 cm. There were 14 (30.4%) lesions originated from mucosal layer, 29 (63.1%) from submucosal layer, and 3 (6.5%) from muscularis propria.Postoperative pathology showed 11 (23.9%) cases of Brunner gland tumors, 9 (19.6%) neuroendocrine tumors, 5 (10.9%) ectopic pancreas, 5 (10.9%) lipomas, and 16 (34.8%) other pathological patterns. All 45 patients with 46 lesions underwent ESD successfully, and the en bloc resection rate was 100.0% (46/46), complete resection rate was 91.3% (42/46). Intraoperative bleeding occurred in 1 case (2.2%), which was successfully treated by endoscopy. One (2.2%) delayed perforation occurred and was treated by surgical intervention. Electrocoagulation syndrome occurred in 1 case (2.2%), which was relieved after conservative medical therapy. Two cases received further surgery after ESD. The mean hospital stay was 6.2 days (ranged 2-21 days) and no death occurred. Forty-one cases were followed up for 1-78 months, with mean time of 30 months. During the follow-up period, local recurrence occurred in 1 patient (2.4%).Conclusion:ESD is an effective and safe treatment for duodenal lesions and has a good clinical practical value.

Objective To externally validate the accuracy of combined use of neutrophil-lymphocyte ratio (NLR),V20,and Dmean in predicting the incidence of grade Ⅲ or higher radiation-induced lung injury (RILI) in lung cancer patients.Methods A total of 166 lung cancer patients,who participated in the model establishment were selected into the internal validation group,and 85 lung cancer patients who received intensity-modulated radiotherapy in our department between June 2016 and June 2018 were assigned into the external validation group.The incidence rate of grade 3 or higher RILI was statistically compared between the internal and external validation groups.Multivariate logistic analysis was performed for NLR,V20 and Dmean The discrimination degree of the predictive model was evaluated by using ROC curve in combination with NLR,V20 and Dmean The calibration degree of the predictive model was assessed by Hosmer-Lemeshow test.Results The incidence rate of grade 3 or higher RILI in the internal and external validation groups was 23.8％ and 22.9％.Multivariate logistic analysis demonstrated that NLR,V20 and Dmean significantly differed in the internal validation group (P=0.032,0.006 and 0.005).However,only V20 significantly differed in the external validation group (P=0.038).The discrimination and calibration degree of RILI was almost consistent between the internal and external validation groups (both P＞0.05).The area under the curve (AUC) predicted by NLR,V20,Dmean and the combination of three indexes were 0.611,0.646,0.682 and 0.775 in the internal validation group,and 0.544,0.702,0.658 and 0.754 in the external validation group,respectively.The calibration degree in the internal validation group was P=2.797and 0.834,P=2.452 and 0.653 in the external validation group.Conclusion Combined application of NLR,V20 and Dmean can accurately predict the incidence of grade Ⅲ or higher RILI in lung can cancer patients,which has been validated by external dataset.

Objective To investigate the features of risk factors of minor stroke with CISS classification in Guangdong Province. Methods We retrospectively investigated the patients admitted within 3 days of the occurrence of a minor stroke, and were classified by CISS criteria as large artery atherosclerosis (LAA), cardiogenic stroke (CS), penetrating artery disease (PAD), other etiology (OE), undetermined etiology (UE). Results In this study, 303 pa-tients met the inclusion criteria of minor stroke. The highest percentage of the risk factors included hypertension (72.3%), hyperlipidemia (58.3%), and diabetes mellitus (39.9%). Among different subtypes, 41.9% were diagnosed with LAA, and 50.8% with PAD. Plasma triglyceride (TG)(1.765 ±1.18)mg/L vs.(2.19 ±1.84)mg/L,P=0.03], apolipoproteinsB (ApoB) [(0.95±0.29)mg/L vs.(1.11±0.46)mg/L,P=0.009]C-reactive protein (CRP) [(6.63±11.30) mg/L vs.(3.42 ±5.02)mg/L,P=0.042] and ApoB/ApoA1 ratio [(0.754 ±0.25)mg/L vs.(0.875 ±0.49)mg/L,P=0.019], differed significantly between group LAA and PAD. Conclusion Hypertension, hyperlipidemia and diabetes mellitus are the major risk factors of minor stroke. The most common subtypes of the minor stroke patients in Guangdong Province are LAA and PAD, and detecting their TG, apoB, CRP level and apoB/apoA1 ratio might help subclassify minor stroke according to CISS.

Objective To compare the effects of different oral motor interventions,including non-nutritive sucking (NNS) and acupuncture point stimulation of oral and cheek combined with NNS,on oral feeding of prematures.Methods A total of 164 prematures were randomly divided into three groups. Group A (n=53) received routine feeding nursing care;Group B (n=54) were given non-nutritive sucking for 3 minutes before and after feeding,with 8 times per day;Group C (n=57) were given acupuncture point stimulation of oral and cheek for 17 minutes and non-nutritive sucking for 3 minutes before feeding,with twice per day.Results There was no significant difference between group B and C on the transitional time from the initiation of oral feeding to full oral feeding (P>0.05). Transitional time of both groups were significant shorter than that of group A (P<0.05). Feeding performance of prematures from the initiation of oral feeding to full oral feeding in group C was significant better than group A and B (P<0.05). There was significant difference in the feeding performance of prematures at the initiation of oral feeding between A and B group (P<0.05),but no significant differences between two groups after full oral feeding (P>0.05).Conclusions Different oral motor interventions including NNS and acupuncture point stimulation of oral and cheek combined with NNS can reduce the time of achieving full oral feeding in prematures. Acupuncture point stimulation of oral and cheek combined with NNS performs better than only NNS on feeding in prematures.

BACKGROUND:There is a great dispute on the choice of repair materials for ossicular chain damage.
OBJECTIVE:To explore the effects of new hydroxyapatite-bone morphogenetic protein ossicular prosthesis versus al ogeneic cartilage ossicular prosthesis in patients with ossicular chain damage.
METHODS:Sixty patients with chronic otitis media were equal y assigned into a control group and a test group. Two groups of patients underwent tympanoplasty and ossicular chain reconstruction with al ogeneic cartilage ossicular prosthesis or hydroxyapatite-bone morphogenetic protein ossicular prosthesis, respectively. Twelve months after surgery, fol ow-up results were compared between two groups.
RESULTS AND CONCLUSION:Air conduction value and air-bone gap value were both improved significantly in the two groups after surgery (P<0.05), and especial y, the postoperative air conduction value was better in the test group than the control group (P<0.05). Implant detachment was found in three cases of the control group, whereas did not occur in the test group. Improved hearing was found in 28 cases in the test group with an improvement rate of 93%and 25 cases in the control group with an improvement rate of 83%. There was a significant difference in the hearing improvement between the two groups (P<0.05). Overal , two kinds of prostheses can share similar effects on the ossicular chain repair.
Subject headings:Tympanoplasty;Otitis Media;Bone Morphogenetic Proteins;Tissue Engineering

Objective To determine the mutation spectrum of the PAH gene in PKU children in Ningxia, six exons of PAH gene were sequenced in each of the 30 phenylketonuria (PKU) children. Methods 30 children diagnosed as PKU by the neonatal sereening and/or GC/MS analysis in Ningxia were enrolled in this study. Meanwhile, 30 normal children were served as controls. The exons 3、5、6、7、11 and 12 of the PAH gene were ampliifed by polymerase chain reaction. The amplicons were analyzed by single strand conformation polymorphism and sequencing. Results Mutations were identiifed for 51 of 60 alleles in this study, representing a mutation detection rate of 85%. A total of 16 different causative mutations were detected, including 8 missense mutations (R 241 C、R 243 Q、R 252 Q、G 257 V、R 359 K、R 408 Q、R 413 P、Q 419 R), 3 splicing mutations (IVS 4-1 G?>?A、Y 204 C、IVS 7+2 T?>?A), 3 nonsense mutations (R 111 X、Q 160 X、Y 356 X), 1 synonymous mutation (V 399 V) and 1 deletion (N 183 del). R 243 Q ( 18 . 3%) had the highest frequency of PAH mutations, and then Y 204 C ( 11 . 7%)、IVS 4-1 G?>?A ( 10 . 0%)、R 111 X ( 6 . 7%) and IVS 7+2 T?>?A ( 6 . 7%). For the ifrst time in China, two novel mutations, deletion mutation N 183 del (C. 547-549 delGAA) in exon 6 and missense mutation R 359 K (C. 1078 G?>?A) in exon 11 , were identiifed in PKU children. Two silent mutations, V 245 V (C. 735 G?>?A) and Q 232 Q (C. 696 A?>?G), were observed in PKU children and the controls, but there were no signiifcant difference between them (P?>?0 . 05 ). Conclusions The most common mutations were missense and R 243 Q had the highest frequency of mutation. The identiifcation of 2 novel mutations expands the spectrum of Chinese PAH mutations.