Objective To observe the image features of high myopia with retinoschisis by spectraldomain optical coherence tomography (SD-OCT). Methods The clinical data of eight patients (eight eyes)of high myopia with retinoschisis were retrospective analyzed. All patients were diagnosed by SD-OCT (Topcon 3D OCT-1000), had no macular holes and underwent vitrectomy including internal limiting membrane (ILM) peeling and gas tamponade. All patients also underwent visual acuity, refraction,pre-mirror fundus examination and A/B-mode ultrasound examination. Visual acuity and SD-OCT were followed up at one, three and six months after surgery. Before surgery, pre-mirror fundus examination revealed shallow foveal detachment in 3/8 eyes, posterior scleral staphyloma in 7/8 eyes. SD-OCT showed concave arc stripes in 7/8 eyes, and outer retinoschisis in 8/8 eyes, middle or inner retinoschisis in 5/8 eyes and foveal detachment in 5/8 eyes. Results Six months after surgery, posterior retinoschisis disappeared in six eyes, foveal detachment still presented in one eye and parafoveal hole occurred in one eye. The corrected visual acuity improved from the 0. 15 to 0. 8 in one eye which had a restored continuous inner segment/outer segmen (IS/OS) line by SD-OCT. The corxected visual acuity improved from 0. 01 to 0. 1 in one eye, from 0. 05 to 0. 15 in one eye, not changed in five eyes. There was no continuous IS/OS line in those patients by SD-OCT. Conclusions SD-OCT shows a variety of morphological features of myopic retinoschisis which could be cured anatomically and functionally by vitrectomy combined ILM peeling. The continuity of IS/OS layer from SD-OCT could help to interpret the vision recovery after the operation.

Objective To analyze the thin-section CT features of fissure-attached nodules in asymptomatic patients.Methods The baseline and follow-up CT images of 120 asymptomatic patients with fissure-attached nodules were retrospectively analyzed.The thin-section CT findings include size,shape,density,interface,and the relationship with pulmonary fissure.Results There were 1 67 fissure-attached nodules of the 120 patients.The mean length of nodules was 5.46 mm±2.276 mm (2 - 1 5 mm).104(104/1 67,61.1%)nodules were less than 5 mm in length.1 63 (1 63/1 67,97.6%)nodules were typical and 4 (4/1 67,2.4%)nodules were atypical.All these nodules manifested as homogenous,solid,smooth interface,and widely adjacent to the fissure on CT ima-ges.Among those nodules,1 64(1 64/1 67,98.2%)nodules were triangular(88/1 67,52.7%)or oval(76/1 67,45.5%).126(126/1 67, 75.4%)nodules were abutting the major fissure.The angle between nodule and fissure was obtuse in 1 64(1 64/1 67,98.2%)fissure-attached nodules.During follow-up,4(4/1 67,2.4%)nodules increased in size and the corresponding volume doubling time (VDT) range was 863-4 228 days.However,no obvious malignant signs were found.Conclusion The thin-section CT images of fissure-attached nodules in asymptomatic patients showed the benign characteristics,most of which less than 5 mm and demonstrated trian-gle or oval,smooth interface and homogenous solid density.

Objective:To investigate the relationship between genotype and phenotype in children with CRB1 mutated Leber congenital amaurosis (LCA) and early onset retinal dystrophy (EOSRD). Methods:A retrospective clinical study. From January 2013 to December 2019, 10 children with CRB1 mutated LCA/EOSRD were enrolled in the study. The patients were identified as CRB1 mutation by the second generation targeted capture sequencing, Sanger sequencing and the family segregation analysis. All children underwent electroretinogram (ERG) and fundus examination. At the same time, 6 cases were examined by optical coherence tomography (OCT); 1 case was examined by fluorescein fundus angiography (FFA), 7 cases were examined by wide-angle laser scanning ophthalmoscope (UWF SLO). Results:There were 6 cases of LCA and 4 cases of EOSRD in 10 patients with CRB1 gene mutations. The average age of first visit was 3.61 years old. The light and dark wave of ERG was flat in 6 cases, and decreased in 4 cases. A total of 19 pathogenic mutations were detected. There were 1 homozygous mutation and 9 compound heterozygous mutations. There were 4, 2 and 1 cases of "copper-coin" like, "salt and pepper" like and "osteocyte" like pigment changes in retina, 1 case of "crystalline pigment" change and 2 cases of macular pigment scar. In 7 cases of UWF SLO examination, different degrees of para-arteriolar pigment epithelium retention (PPRPE) were found in the middle and peripheral fundus. In 6 cases examined by OCT, the outer layer of retina atrophied and the band of ellipsoid disappeared. Symmetrical cystoid macular edema, splitting cystoid macular degeneration and adhesion of epi-macular membrane to optic disc and macular area were found in 1 case, respectively, the retinal structure was rough and thickened, and the fovea became thinner in 3 cases. In FFA examination, 1 case showed uveitis-like changes with late optic disc fluorescein staining, macular fluorescence accumulation, strong fluorescence diffusing along the blood vessels in each quadrant, peripheral PPRPE of "frost-branch" like strong fluorescence. Conclusion:The relationship between genotype and phenotype of CRB1 mutation is complex, and PPRPE is a common characteristic change.

Purpose To compare the CT features of hepatic angiomyolipoma (HAML) and primary hepatocellular carcinoma (HCC) and improve diagnostic accuracy for HAML. Materials and Methods The CT findings of 9 patients with HAML confirmed pathologically and 20 patients with HCC were retrospectively analyzed in terms of lesion location, appearance, size, margin, CT value at each phase, cirrhosis and vessel presence inside tumor. Results Mean CT value on plain scan and at arterial phase on contrast enhanced scan of HAML was significantly lower than that of HCC (t=-2.885, P<0.05;t=-3.307, P<0.01). At portal vein phase, difference in CT value showed no statistic significance (t=-0.293, P>0.05). CT value on plain scan and at arterial phase of both HAML and HCC was not significantly different (t=1.289, P>0.05) whilst that at portal vein phase was significantly different (t=2.516, P<0.05). Central vessels were shown in 7 cases of HAML and 3 cases of HCC, pseudocapsule appeared in 1 case of HAML and 13 cases of HCC with statistical difference (χ2=10.828, 7.219;P<0.01). Conclusion CT scan of HAML reveals the component of fat and presentsfast in and slow outpattern, large shadow of vessel and absence of capsule on contrast enhanced scan, which can be helpful in the differential diagnosis from HCCs.

Objective To evaluate the correlation between thin-section CT morphologic features and pathological vascular invasion in the clinical stage ⅠA peripheral lung adenocarcinoma.Methods The preoperative thin-section CT images,clinical and pathological characteristics of 102 nodules in 98 patients were retrospectively analyzed and divided into two groups according to pathological vascular invasion.Variables including the diameter of tumor(T) and consolidation part (C) in the mix ground glass nodule (mGGN),C/T ratio,morphology and pathological classification were analyzed by two-independent samples Mann-Whitney U test or t test and x2 test or Fisher exact probability test.Variables with significant difference in the univariate analyses were entered into multivariate analysis to explore predictors for vascular invasion.The correlation between these measurements and vascular invasion was evaluated by a ROC analysis.Results All of 102 nodules,36 had pathological vascular invasion and 66 without.The numbers of two groups with speculation,air bronchogram,abnormal vein,vascular convergence,pleural indentation were 30,30;26,26;35,3;35,39;32,39 and the mediandiameter of tumors were 2.1(1.0-3.0),1.2(0.5-3.0) cm respectively.By univariateanalysis,spiculation,air bronchogram,abnormal vein,vascular convergence,pleural indentation,and diameter of tumor were significantly associated with pathological vascularinvasion (P＜0.01).By multivariate logistic analysis,the statistically significant difference were found in speculation and abnormal vein (OR=33.867,8 161.063,P＜0.05).The ROC analysis showed the area under curve,cut-off value,sensitivity and specificity ofthe diameter of tumor and consolidation part of mGGN and C/T ratio were 0.784,2.05 cm,66.7％,78.8％;0.886,1.08 cm,82.4％,90.0％ and 0.861,0.65,79.4％,85.0％ respectively in differentiating tumors with pathological vascular invasion.Conclusion The spiculation sign and abnormal vein are independent predictors for vascular invasion in stage ⅠA peripheral lung adenocarcinoma.

Objective To get well-informed of the current status of emergency training in primary hospitals in Sichuan Province and to find weaknesses in the system in order to provide scientific basis for emergency knowledge and skills training.Methods A stratified random cluster sampling method as adopted and an anonymous questionnaire survey method was conducted to investigate the basic circumstances of the current training and the training needs of 1 000 emergency medical staff in 9 regions throughout Sichuan Province.Results The scope of the survey covered emergency doctors,nurses and technicians in hospitals of Grade Ⅱ,Grade Ⅲ and below.A total of 1 000 surveys were sent out and 983 were recovered.The questionnaire completion rate was 98.3％.The respondents mainly worked for more than 10 years,most of which with Bachelor degree,junior and intermediate titles.Results of the survey showed,63.1％ Most respondents have only one or two training opportunities per year.The training methods are mainly continuing education (59.0％,580 trips),training organized within the unit (58.5％,575 trips),and training organized by health administrative units (39.3％,386 trips).The main contents of the training are:basic professional skills learning (66.7％,655 trips),basic professional theoretical study (59.2％,582 trips),and new emergency technology (42.5％,418 trips),only 32.0％ of the respondents believe that these methods meet the practical needs.The main factors that influence participation in the training were:not be arranged by employer (36.2％,356 trips);the training was different from actual work (31.6％,311 trips);no replacement for work so they couldn't join training (29.8％,293 trips).The survey showed that the most desirable way of training is:practical application (60.1％,591 trips) and the most desirable training content is:emergency first aid knowledge (73.7％,724 trips).There were significant differences in case discussion,technical observation,academic lectures,special study trainingand learning methods in hospitals of different levels (P＜0.05),but there was no significant difference in the choice of professional practice methods (P＞0.05),and the selection of training contents was in emergency first aid knowledge,general medical knowledge and prevention and treatment of chronic diseases.There was no statistical difference in the selection of training contents of knowledge,infectious disease knowledge and department management knowledge (P＞0.05).There were significant differences in the choice of nursing knowledge training (P＜0.05).Conclusion The current situation showed a lack of first-aid knowledge and skills training for emergency personnel in Sichuan Province.The present situation of skill training can't satisfy the need of their desire to participate in training.It is urgent to develop a standardized,systematic and scientific training mode to improve the emergency first aid ability of primary medical and emergency personnel.

Objective To analyze the CT features of visceral pleural invasion of peripheral non-small cell lung cancer with the largest diameter less than or equal to 3 cm to improve the diagnostic accuracy.Methods The CT features of 249 patients with peripheral non-small cell lung cancer with the largest diameter less than or equal to 3 cm were analyzed retrospectively.Multivariate Logistic regression was performed to analyze the independent risk factors of the visceral pleural invasion.Results Visceral pleural invasion was observed in 61/249 of the cases.Gender,the largest diameter,type,spiculated sign,lobulated sign,DLP and relationship of nodule and visceral pleura between the two groups were significantly different (P＜0.05).Multivariate Logistic regression analysis showed that the largest diameter and spiculated sign of nodules were independent risk factors for visceral pleural invasion.Visceral pleural invasion was uncommon in TypeⅠ.The probability of the visceral pleural invasion in typeⅡ,typeⅢand typeⅣ was 0.023 times (95% CI:0.006-0.093),0.225 times (95% CI:0.078-0.648)and 0.645 times (95% CI:0.261-2.300)as much as that of type Ⅴ,respectively.Visceral pleural invasion was more likely to occur in Type V than other types (P＜0.05).Conclusion The largest diameter and spiculated sign are independent predictors for visceral pleural invasion in non-small cell lung cancer with the largest diameter less than or equal to 3 cm.Nodules closely adjacent to the pleura are more likely to invade the visceral pleural.

OBJECTIVES: This study aimed to investigate how naringenin (Nar) affected the anti-inflammatory, vascula-rization, and osteogenesis differentiation of human periodontal ligament stem cells (hPDLSCs) stimulated by lipopolysaccharide (LPS) and to preliminarily explore the underlying mechanism. METHODS: Cell-counting kit-8 (CCK8), cell scratch test, and Transwell assay were used to investigate the proliferation and migratory capabilities of hPDLSCs. Alkaline phosphatase (ALP) staining, alizarin red staining, lumen-formation assay, enzyme-linked immunosorbent assay, quantitative timed polymerase chain reaction, and Western blot were used to measure the expression of osteopontin (OPN), Runt-related transcription factor 2 (RUNX2), vascular endothlial growth factor (VEGF), basic fibroblast growth factor (bFGF), von Willebrand factor (vWF), tumor necrosis factor-α (TNF-α), and interleukin (IL)-6. RESULTS: We observed that 10 μmol/L Nar could attenuate the inflammatory response of hPDLSCs stimulated by 10 μg/mL LPS and promoted their proliferation, migration, and vascularization differentiation. Furthermore, 0.1 μmol/L Nar could effectively restore the osteogenic differentiation of inflammatory hPDLSCs. The effects of Nar's anti-inflammatory and promotion of osteogenic differentiation significantly decreased and inflammatory vascularization differentiation increased after adding AMD3100 (a specific CXCR4 inhibitor). CONCLUSIONS Nar demonstrated the ability to promote the anti-inflammatory, vascularization, and osteogenic effects of hPDLSCs stimulated by LPS, and the ability was associated with the stromal cell-derived factor/C-X-C motif chemokine receptor 4 signaling axis.
Humans ; Anti-Inflammatory Agents/pharmacology* ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Chemokine CXCL12 ; Lipopolysaccharides/pharmacology* ; Osteogenesis ; Periodontal Ligament/metabolism* ; Receptors, Chemokine/metabolism* ; Stem Cells ; Interleukin-8/metabolism*

Objective:To assess the effectiveness of a model created using clinical features and preoperative chest CT imaging features in predicting the chronic obstructive pulmonary disease (COPD) among patients diagnosed with lung cancer.Methods:A retrospective analysis was conducted on clinical (age, gender, smoking history, smoking index, etc.) and imaging (lesion size, location, density, lobulation sign, etc.) data from 444 lung cancer patients confirmed by pathology at the Second Affiliated Hospital of Naval Medical University between June 2014 and March 2021. These patients were randomly divided into a training set (310 patients) and an internal test set (134 patients) using a 7∶3 ratio through the random function in Python. Based on the results of pulmonary function tests, the patients were further categorized into two groups: lung cancer combined with COPD and lung cancer non-COPD. Initially, univariate analysis was performed to identify statistically significant differences in clinical characteristics between the two groups. The variables showing significance were then included in the logistic regression analysis to determine the independent factors predicting lung cancer combined with COPD, thereby constructing the clinical model. The image features underwent a filtering process using the minimum absolute value convergence and selection operator. The reliability of these features was assessed through leave-P groups-out cross-validation repeated five times. Subsequently, a radiological model was developed. Finally, a combined model was established by combining the radiological signature with the clinical features. Receiver operating characteristic (ROC) curves and decision curve analysis (DCA) curves were plotted to evaluate the predictive capability and clinical applicability of the model. The area under the curve (AUC) for each model in predicting lung cancer combined with COPD was compared using the DeLong test.Results:In the training set, there were 182 cases in the lung cancer combined with COPD group and 128 cases in the lung cancer non-COPD group. The combined model demonstrated an AUC of 0.89 for predicting lung cancer combined with COPD, while the clinical model achieved an AUC of 0.82 and the radiological model had an AUC of 0.85. In the test set, there were 78 cases in the lung cancer combined with COPD group and 56 cases in the lung cancer non-COPD group. The combined model yielded an AUC of 0.85 for predicting lung cancer combined with COPD, compared to 0.77 for the clinical model and 0.83 for the radiological model. The difference in AUC between the radiological model and the clinical model was not statistically significant ( Z=1.40, P=0.163). However, there were statistically significant differences in the AUC values between the combined model and the clinical model ( Z=-4.01, P=0.010), as well as between the combined model and the radiological model ( Z=-2.57, P<0.001). DCA showed the maximum net benifit of the combined model. Conclusion:The developed synthetic diagnostic combined model, incorporating both radiological signature and clinical features, demonstrates the ability to predict COPD in patients with lung cancer.

Probiotics can improve the microecological balance of the body and have special effects in promoting nutrient absorption, controlling intestinal infections, and regulating immune function. However, there are problems such as difficult colonization in the gastrointestinal environment and low oral bioavailability. Bacterial biofilms are organized bacterial cells that adhere to an abiotic or biotic surface and are enclosed in extracellular polymeric substances of exopolysaccharides (EPS), extracellular DNA (eDNA), proteins and lipids, with a three-dimensional spatial structure. Probiotics with the help of bacterial biofilms have obvious advantages over planktonic bacteria in stress resistance, combating pathogens and modulating the host's immune function, which provides a new research idea for the development of probiotics. This paper expounded on the advantages of probiotics with the help of bacterial biofilms, and focused on introducing substances that could promote the formation of probiotic biofilms and the mechanisms, and the safety of probiotic biofilms. Currently, research on probiotic biofilms is still in its infancy, and this paper is expected to provide references for future research in this field.
Bacteria ; Biofilms ; Extracellular Polymeric Substance Matrix ; Probiotics