Objective To predict the lymph node metastasis status of patients with invasive pulmonary adenocarcinoma by constructing machine learning models based on primary tumor radiomics, peritumoral radiomics, and habitat radiomics, and to evaluate the predictive performance and generalization ability of different imaging features. Methods A retrospective analysis was performed on the clinical data of 1 263 patients with invasive pulmonary adenocarcinoma who underwent surgery at the Department of Thoracic Surgery, Jiangsu Province Hospital, from 2016 to 2019. Habitat regions were delineated by applying K-means clustering (average cluster number of 2) to the grayscale values of CT images. The peritumoral region was defined as a uniformly expanded area of 3 mm around the primary tumor. The primary tumor region was automatically segmented using V-net combined with manual correction and annotation. Subsequently, radiomics features were extracted based on these regions, and stacked machine learning models were constructed. Model performance was evaluated on the training, testing, and internal validation sets using the area under the receiver operating characteristic curve (AUC), F1 score, recall, and precision. Results After excluding patients who did not meet the screening criteria, a total of 651 patients were included. The training set consisted of 468 patients (181 males, 287 females) with an average age of (58.39±11.23) years, ranging from 29 to 78 years, the testing set included 140 patients (56 males, 84 females) with an average age of (58.81±10.70) years, ranging from 34 to 82 years, and the internal validation set comprised 43 patients (14 males, 29 females) with an average age of (60.16±10.68) years, ranging from 29 to 78 years. Although the habitat radiomics model did not show the optimal performance in the training set, it exhibited superior performance in the internal validation set, with an AUC of 0.952 [95%CI (0.87, 1.00)], an F1 score of 84.62%, and a precision-recall AUC of 0.892, outperforming the models based on the primary tumor and peritumoral regions. Conclusion The model constructed based on habitat radiomics demonstrated superior performance in the internal validation set, suggesting its potential for better generalization ability and clinical application in predicting lymph node metastasis status in pulmonary adenocarcinoma.

This paper analyzes the literature on virtual reality(VR)technology interventions for autistic children published from 2014 to 2022.It shows that different VR systems in these studies have improved different symptoms of autism,and points out the feasibility of VR technology interventions for autistic children.

Mucosal-associated invariant T (MAIT) cells are highly conserved immune cells that could participate in innate and adaptive immune responses after being activated by major histocompatibility complex class 1-related molecule (MR1) pathway or cytokine pathway. At present, it has been confirmed that a large number of MAIT cells exist in human peripheral blood and specific tissues, and play an important role in infectious diseases. This review focused on the role of MAIT cells in immune responses to different pathogens. Additionally, the therapeutic methods and challenges of targeting MAIT cells in infectious diseases were also discussed.

Sarcopenia is an age-related disease that mainly involves decreases in muscle mass, muscle strength and muscle function. At the same time, the body fat content increases with aging, especially the visceral fat content. Adipose tissue is an endocrine organ that secretes biologically active factors called adipokines, which act on local and distant tissues. Studies have revealed that some adipokines exert regulatory effects on muscle, such as higher serum leptin levels causing a decrease in muscle function and adiponectin inhibits the transcriptional activity of Forkhead box O3 (FoxO3) by activating peroxisome proliferators-activated receptor-γ coactivator -1α (PGC-1α) and sensitizing cells to insulin, thereby repressing atrophy-related genes (atrogin-1 and muscle RING finger 1 [MuRF1]) to prevent the loss of muscle mass. Here, we describe the effects on muscle of adipokines produced by adipose tissue, such as leptin, adiponectin, resistin, mucin and lipocalin-2, and discuss the importance of these adipokines for understanding the development of sarcopenia.
Humans ; Adipokines ; Leptin ; Adiponectin ; Sarcopenia ; Muscles

The Chinese Neonatal Network(CHNN) was established in 2018 with the mission of establishing a national collaboration platform, conducting high-quality and collaborative research, and ultimately improving the quality of neonatal-perinatal care and health in China.At present, 112 hospitals across the country have joined CHNN.CHNN has established a national standardized cohort of very premature infants/very low birth weight infants with >10 000 enrollments each year, has been leading data-driven collaborative quality improvement initiatives, conducting multicenter clinical studies, and performing multi-level training programs.Guided by the principles of collaboration and sharing, data-driven, continuous improvement, and international integration, CHNN has become an important platform for clinical and research collaboration in neonatal medicine in China.

Objective:To investigate the importance, satisfaction and influencing factors of college students in a medical university, and to provide reference for the teaching reform of public elective courses.Methods:A questionnaire survey was conducted in this study among Batch 2018 students of Southern Medical University. A total of 691 questionnaires were distributed and 674 valid ones were recovered. The data were analyzed descriptively, and one-way ANOVA analysis and multiple linear regression analysis were carried out by using SPSS 20.0.Results:There were statistical differences between students' objective of elective course, evaluation of teachers, evaluation of courses and harvest of courses and students' satisfaction and attention to public elective courses ( P<0.05). Students who chose courses for improving their comprehensive quality paid more attention to public courses [(4.3±0.73) points] and had higher satisfaction [(4.34±0.69) points] than other options. Students with good evaluation on teachers' teaching paid more attention to public elective courses [(4.32±0.71) points] and their satisfaction [(4.45±0.62) points] was higher than other options. Students with good evaluation on the courses had the highest degree of attention [(4.35±0.71) points] and satisfaction [(4.47±0.63) points]. Students paid the highest attention [(4.75±0.53)points] to and had the highest satisfaction [(4.85±0.36) points] with the public elective courses with more course harvest. The multiple linear regression analysis found that the 5 variables, gender, teaching forms, teaching evaluation, course quality and course harvest had significant differences in the scores of public elective course satisfaction ( P<0.05). Conclusion:The male students, in inquiry teaching form, the higher evaluation on the teacher, the higher the course quality, and the more the course harvest, the higher the students' satisfaction with the public elective courses.

Objective    To analyze the incidence and drainage pattern of the specific collateral vein (VL) located between several adjacent segments of the bilateral upper lung, and its clinical significance in the surgical treatment of early lung cancer. Methods    The preoperative three-dimensional computed tomography bronchography and angiography (3D CTBA) data of 1 515 patients in the First Affiliated Hospital of Nanjing Medical University from 2017 to 2020 were analyzed retrospectively, including 524 males and 991 females, with an average age of 54.27±11.43 years. There were 712 patients of right upper lung and 803 patients of left upper lung. The incidence and drainage pattern of VL in bilateral upper lungs were analyzed. Furthermore, the imaging data and medical records of 113 patients in the left upper lung were reviewed to investigate the influence of the relative position relationship between nodules and VL on the selection of operation. Results    The overall incidence of VL was 72.7% (1 102/1 515) in the bilateral upper lungs, including 68.0%(484/712) in the right upper lung, and 77.0% (618/803) in the left upper lung. The incidence of VL in the left side was significantly higher than that in the right side (P<0. 05). VL mainly drained into V2a+b (327/484, 67.6%) in the right upper lung and into V1+2b+c (389/618, 62.9%) in the left upper lung. When the spherical simulative cutting margin of 2 cm of the nodule did not involve VL, it was more feasible to undergo sublobectomy than those whose simulative cutting margin of 2 cm involved VL, and the difference was statistically significant (91.9% vs. 61.5%, P<0.05). When the spherical simulative cutting margin of 2 cm of nodule involved VL, the lesion located in the middle or inner zone was more feasible to undergo lobectomy than that in the outer zone, but the difference was not statistically significant (43.8% vs. 34.8%, P>0.05). Multivariate logistic regression analysis showed that diameter of the lesion, whether the spherical simulative margin of 2 cm involving VL and the depth ratio of the lesion were independent risk factors affecting the surgical options (P<0.05). Conclusion    The incidence of the specific collateral vein in bilateral upper lungs is high, and the drainage pattern is diverse, which has important guiding significance for preoperative planning and intraoperative manipulation. For deep nodules adjacent to VL, lobectomy or resection of left upper division is often performed to ensure a safe margin.

Objective: To investigate the transcriptomic changes in primary human oral keratinocytes (pHOKs) after coculture with Prevotella melaninogenica (P.m) and to verify the changes in human oral keratinocyte (HOK) cell lines. Methods: pHOK was isolated and cocultured with P.m for 0, 4 and 24 h. Total RNA was extracted, a gene library was constructed, transcriptional sequencing was performed, differentially expressed genes (DEGs) were analyzed, gene ontology (GO) pathway analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed, and the validation of DEGs was performed by qRT-PCR and Western Blot in the HOK and P.m coculture cell model. Results : 1 788 DEGs were detected between the 4 h group and control group, including upregulated DEGs such as lymphocyte cytosolic protein 1(LCP1), keratin 7 (KRT7) and Cilia and flagella associated protein 251(CFAP251) and downregulated DEGs such as FERM, ARH/RhoGEF and Pleckstrin domain protein 1 (FARP1), WW domain containing transcription regulator 1(WWTR1) and Discoidin, CUB and LCCL domain-containing protein 2 (DCBLD2). 1 832 DEGs were detected between the 24 h group and control group, including upregulated DEGs such as LCP1, complement C1s(C1S), kynureninase (KYNU) and downregulated DEGs such as phosphoserine aminotransferase 1 (PSAT1), FARP1 and FKBP prolyl isomerase 10 (FKBP10). There were 1 090 common differentially expressed genes (cDEGs) in the 4 h and 24 h groups, including LCP1, KYNU and long intergenic nonprotein coding RNA 958 (LINC00958). The GO pathways were mainly enriched in response to lipopolysaccharide and the molecules of bacterial origin and apical part of the cell. KEGG pathway analysis revealed enrichment in the interleukin-17 (IL-17) signaling pathway, tumor necrosis factor (TNF) signaling pathway, Toll-like receptor (TLR) pathway, etc. We verified the expression of a cDEG, Myosin1B (MYO1B), and qRT-PCR and Western Blot analysis showed that MYO1B expression was significantly upregulated between the control group and the P.m cocultured group (P<0.001), and its expression followed a time-dependent and concentration-dependent manner. Conclusion P.m played an important role in the transcriptome of oral keratinocytes.

Natamycin is a polyene macrolide antibiotics with strong and broad spectrum antifungal activity. It not only effectively inhibits the growth and reproduction of fungi, but also prevents the formation of some mycotoxins. Consequently, it has been approved for use as an antifungal food preservative in most countries, and is also widely used in agriculture and healthcare. Streptomyces natalensis and Streptomyces chatanoogensis are the main producers of natamycin. This review summarizes the biosynthesis and regulatory mechanism of natamycin, as well as the strategies for improving natamycin production. Moreover, the future perspectives on natamycin research are discussed.
Antifungal Agents/pharmacology* ; Fungi ; Natamycin ; Streptomyces

Objective To investigate the relationship between serum uric acid ( UA) level and brachial?ankle pulse wave velocity ( baPWV) in patients with systemic lupus erythematosus ( SLE) and lupus nephritis (LN)??Methods A total of 110 hospitalized,out?patient and healthy examinees from January 2017 to September 2017 were selected from Kailuan General Hospital??They were divided into three groups:(1)Fifty?five healthy controls were examined at the same time,and those who had no history of hypertension, myocardial infarction and stroke were excluded by physical examination??(2)Thirty?four SLE patients without LN were diagnosed according to the SLE classification standard revised by the American Society of Rheumatology ( ACR) in 1997,excluding those with lupus nephritis??( 3) 21 SLE patients with LN were diagnosed according to the SLE classification standard revised by the American Society of Rheumatology (ACR) in 1997??Pearson correlation coefficient and multivariate linear regression model were used to analyze the related factors affecting baPWV??Results The level of baPWV and the proportion of baPWV (≥1400 cm／s) in SLE without LN group and SLE with LN group were higher than those in healthy control group (all P＜0??05)??In SLE without LN group, baPWV was positively correlated with age, systolic blood pressure (SBP) and total cholesterol ( CHOL) ( r＝ 0??623,0??528,0??402, P＜0??01 or P＜0??05), and negatively correlated with blood uric acid(UA) ( r＝－0??371,P＜0??05),but the correlation was not significant??The correlation between UA and baPWV disappeared after after correction of age,SBP,diastolic blood pressure (DBP) by partial correlation analysis??In SLE with LN group,baPWV was positively correlated with SBP, DBP and serum creatinine ( Cr) ( r＝0??815, 0??725, 0??464, P＜0??01 or P＜0??05)??Multivariate stepwise regression analysis showed that SBP was independently correlated with baPWV in SLE group ( t＝2??54,P＝0??026); UA in SLE group without LN was independently negatively correlated with baPWV(t＝－2??96,P＝0??042); UA(t＝4??24,P＝0??013) and SBP(t＝7??70,P＝0??002) were independently positively correlated with baPWV in SLE group with LN??Logistic regression analysis showed that SLE was a risk factor for baPWV (≥1 400 cm／s),and the OR (95% CI) was 4??31 ( 1??56－11??88),P＝0??005,and there was statistical significance after adjusting for age,SBP,DBP,body mass index ( BMI)??However,UA was not a risk factor for baPWV (≥1 400 cm／s) (P values were 0??163 and 0??519,respectively)??Conclusion The degree of arteriosclerosis in SLE patients is higher than that in normal subjects,and the level of UA in SLE patients may be related to baPWV??