Objective:To explore the value of salivary gland imaging based on deep learning and Delta radiomics in assessing salivary gland injury after 131I treatment in post-thyroidectomy thyroid cancer patients. Methods:A retrospective analysis on 223 patients (46 males, 177 females, age(47.7±14.0) years ) with papillary thyroid cancer, who underwent total thyroidectomy and 131I treatment in Affiliated Hospital of Guilin Medical University between December 2019 and January 2022, was conducted. All patients underwent salivary gland 99Tc mO 4- imaging before and after 131I therapy. The patients were categorized according to salivary gland function based on 99Tc mO 4- imaging results (normal salivary gland vs salivary gland injury), and divided into training and test sets in a ratio of 7∶3. A ResNet-34 neural network model was trained using images at the time of maximum salivary gland radioactivity and those based on background radioactivity counts for structured image feature data. The Delta radiomics approach was then used to subtract the image feature values of the two periods, followed by feature selection through t-test, correlation analysis, and the least absolute shrinkage and selection operator( LASSO) algorithm, to develop logistic regression (LR), support vector machine (SVM), and K-nearest neighbor (KNN) predictive models. The diagnostic performance of 3 models for salivary gland function on the test set was compared with that of the manual interpretation. The AUCs of the 3 models on the test set were compared (Delong test). Results:Among the 67 cases of the test set, the diagnostic accuracy of 3 physicians were 89.6%(60/67), 83.6%(56/67), and 82.1%(55/67) respectively, with the time required for diagnosis of 56, 74 and 55 min, respectively. The accuracies of LR, SVM, and KNN models were 91.0%(61/67), 86.6%(58/67), and 82.1%(55/67), with the required times of 12.5, 15.3 and 17.9 s, respectively. All 3 radiomics models demonstrated good classification and predictive capabilities, with AUC values for the training set of 0.972, 0.965, and 0.943, and for the test set of 0.954, 0.913, and 0.791, respectively. There were no significant differences among the AUC values for the test set ( z values: 0.72, 1.18, 1.82, all P>0.05). Conclusion:The models based on deep learning and Delta radiomics possess high predictive value in assessing salivary gland injury following 131I treatment after surgery in patients with thyroid cancer.

Objective:To investigate the clinicopathological characteristics of early gastric cancer with mixed histological staging, and to analyze the prognostic effect of endoscopic submucosal dissection (ESD) for early gastric cancer.Methods:Clinical data of early gastric cancer patients treated with ESD in Gansu Wuwei Cancer Hospital from January 2011 to March 2020 were collected, and clinicopathological characteristics of patients with mixed-type early gastric cancer were analyzed by descriptive statistical methods. The clinical effects and influencing factors of ESD on early gastric cancer were analyzed by logistic regression. Kaplan-Meier was used to estimate the survival rate, and log-rank test was used to compare the survival rate.Results:A total of 269 patients (280 lesions) were included in this study, including 216 males (80.30%) and 53 females (19.70%), with age of 60.43±8.01 years. There were 25 lesions (8.93%) of mixed early gastric cancer, 248 lesions (88.57%) of differentiated early gastric cancer, and 7 lesions (2.50%) of undifferentiated early gastric cancer. Compared with differentiated and undifferentiated early gastric cancer, the lesion site of mixed early gastric cancer was mainly located in the upper 1/3 of the stomach [64.00% (16/25), 40.73% (101/248) VS 0.00% (0/7), χ2=10.211, P=0.006], the proportion of the lesion size ≤2 cm was relatively small [52.00% (13/25), 80.65% (200/248) VS 85.71% (6/7), χ2=11.173, P=0.004], and the proportion of infiltration depth in the mucosa was lower [52.00% (13/25), 85.48% (212/248) VS 57.14% (4/7), χ2=20.019, P<0.001], the proportion of positive vertical resection margin was relatively high [20.00% (5/25), 2.82% (7/248) VS 0.00% (0/7), χ2=16.657, P<0.001], the proportion of vascular invasion was higher than that of differentiated carcinoma but lower than that of undifferentiated carcinoma [36.00% (9/25), 2.42% (6/248) VS 42.86% (3/7), χ2=58.413, P<0.001], the complete resection rate was lower [76.00% (19/25), 93.15% (231/248) VS 100.00% (7/7), χ2=9.497, P=0.009], the curative resection rate was lower than that of differentiated early gastric cancer, but higher than that of undifferentiated early gastric cancer [48.00% (12/25), 89.52% (222/248) VS 42.86% (3/7), χ2=39.757, P<0.001], and the proportion of eCura grade C2 was higher than that of differentiated cancer, but lower than that of undifferentiated cancer [48.00% (12/25), 5.65% (14/248) VS 57.14% (4/7), χ2=58.766, P<0.001]. The results of multivariate analysis showed that the larger lesions ( P=0.004, OR=0.539, 95% CI: 0.354-0.822) was the risk factor for curative resection. In terms of infiltration depth, mucosal ( P=0.001, OR=51.799, 95% CI: 5.535-84.768) and submucosal 1 ( P<0.001, OR=29.301, 95% CI: 24.694-73.972) were protective factors for curative resection compared with submucosal 2. In terms of differentiation degree, compared with mixed type, differentiated type ( P=0.024, OR=3.947, 95% CI: 1.195-13.032) was the protective factor for curative resection, while undifferentiated type ( P=0.443, OR=0.424, 95% CI: 0.048-3.788) showed no difference between curative resection and mixed type. During the follow-up, 7 patients died. The overall survival time was 114.42±0.97 months, and the 5-year survival rate was 97.10%. There was no significant difference in the survival rate of early gastric cancer patients with different degrees of differentiation ( χ2=0.434, P=0.805). The survival rate of early gastric cancer patients with or without curative resection was significantly different ( χ2=4.081, P=0.043). Conclusion:Mixed early gastric cancer patients show high margin positive rate, vascular infiltration, and less curative resection than differentiated early gastric cancer. Therefore, the process of treating mixed early gastric cancer should be more rigorous. The long-term survival prognosis of early gastric cancer after ESD treatment is promising.

Objective We aimed to establish and evaluate a rat model of post-infectious irritable bowel syndrome(PI-IBS)with the pattern of liver depression and spleen deficiency coupled with dampness.Methods First,200 rats were randomly divided into the normal group,the infection group,the infection+stress group,the infection+stress+external dampness group,and the acetic acid+stress group(n=40 rats per group)for eight weeks.The rats were treated with Trichinella spiralis infection,chronic restraint stress,an artificial high-humidity climate,and/or acetic acid enema.Weight growth rate,24-hour food intake and water intake,and the fecal moisture percentage were recorded.The open field test and the sucrose consumption test were used to determine the behavioral characteristics of rats in each group.The abdominal withdrawal reflex(AWR)test was used to determine visceral sensitivity.The contents of 5-hydroxytryptamine(5-HT)and aquaporin 4(AQP4)in colon tissue were detected by ELISA.Results Compared with the normal group,the weight growth rate of rats in the infection+stress+external dampness group and the acetic acid+stress group was lower from Week 1 to Week 8 of modeling.The 24-hour food intake of rats in the infection+stress+external dampness group and the infection+stress group was lower than that in the normal group from Week 2 to Week 8 of modeling.At the end of week 2 of modeling,the 24-hour water intake of rats in the infection+stress+external dampness group,the acetic acid+stress group,and the infection+stress group was lower than that in the normal group.The fecal moisture percentage of rats in the infection+stress+external dampness group was higher than that in the normal group at the end of Week 1,6,and 8(P＜0.05).At the end of Week 4 of modeling,the total distance in the open field test in the infection+stress+external dampness group and the acetic acid+stress group was shorter than that in the normal group.The sugar preference rate in the infection+stress+external dampness group was lower than that in the normal group at the end of 1,4,and 8 weeks and lower than that in the acetic acid+stress group at the end of Week 4 and 8(P＜0.05).The AWR scores of rats in the infection+stress+external dampness group were higher than those in the normal group after week 1 at 60 and 80 mmHg(1 mmHg≈0.133 kPa),after Week 4 at 40,60,and 80 mmHg,and after Week 6 and 8 at 20,40,and 80 mmHg(P＜0.05).At the end of Week 2 and 4,a large number of inflammatory cells were infiltrated in the colonic mucosa of the intervention groups,and the inflammation score was higher than that of the normal group(P＜0.05).At the end of weeks 6 and 8,the inflammatory cell infiltration in the intestinal mucosa of the intervention groups was not obvious,and the colonic mucosa returned to normal.At the end of weeks 6 and 8,the 5-HT content was higher in the infection+stress group,the infection+stress+external dampness group,and the acetic acid+stress group than in the normal group(P＜0.05).After Week 4,the AQP4 content was lower in the infection+stress+external dampness group and the acetic acid+stress group than that in the normal group(P＜0.05).After week 6,compared to the normal group,the AQP4 content was lower in all groups except for the acetic acid+stress group,and the AQP4 content in the infection+stress+external dampness group was lower than that in the acetic acid+stress group.After week 8,only in the infection+stress+external dampness group the AQP4 content was lower than in the normal group(P＜0.05).Conclusion The combination of Trichinella spiralis infection,chronic restraint stress,and an artificial high-humidity climate can be used to prepare a relatively stable and reliable rat model of PI-IBS with the pattern of liver depression and spleen deficiency with dampness.

Objective To observe the value of 18F-FDG PET/CT semi-quantitative parameters for predicting spread through air spaces(STAS)of clinical stage Ⅰa—Ⅲa lung adenocarcinoma.Methods Data of 85 patients with clinical stage Ⅰa—Ⅲ a lung adenocarcinoma who underwent preoperative 18F-FDG PET/CT were retrospectively analyzed.The patients were divided into positive group(n=23)or negative group(n=62)according to whether pathology showed STAS or not.Clinical and PET/CT data were compared between groups,and logistic analysis was performed to explore the efficacy of each parameter for predicting STAS.Results Significant differences of gender,carcinoma embryonic antigen,clinical stage,pathological grade,micropapillary growth and proportion were found between groups(all P＜0.05).The maximum,the mean,the peak standard uptake value(SUVmax,SUVmean,SUVpeak),as well as the maximum,the mean and the peak standard uptake value normalized by lean body mass(SULmax,SULmean,SULpeak),also the total lesion glycolysis(TLG)in positive group were all significantly higher than those in negative group(all P＜0.05).Patients'gender,proportion of micropapillary growth,SUVmax and SULmax were all independent risk factors of STAS of clinical stage Ⅰa—Ⅲa lung adenocarcinoma.The area under the curve(AUC)of the above parameters for predicting STAS was 0.666,0.912,0.839 and 0.842,respectively,and of the combination was 0.957.Conclusion 18 F-FDG PET/CT semi-quantitative parameters SUVmax and SULmax were helpful for predicting STAS of clinical stage Ⅰa—Ⅲ a lung adenocarcinoma,and further combination of gender and proportion of micropapillary growth could improve diagnostic efficacy.

Public health and social measures (PHSMs) are one of the most important measures in the prevention and control of COVID-19 and have also been effective in suppressing the spread of influenza viruses, but their effectiveness has not been fully investigated. This study aimed to review the progress of research on the impact of PHSMs on influenza during the COVID-19 pandemic based on the latest evidence of the effectiveness of various PHSMs in controlling transmission of influenza viruses, to provide scientific evidence for optimizing influenza prevention and control strategies.

Public health and social measures (PHSMs) are one of the most important measures in the prevention and control of COVID-19 and have also been effective in suppressing the spread of influenza viruses, but their effectiveness has not been fully investigated. This study aimed to review the progress of research on the impact of PHSMs on influenza during the COVID-19 pandemic based on the latest evidence of the effectiveness of various PHSMs in controlling transmission of influenza viruses, to provide scientific evidence for optimizing influenza prevention and control strategies.

Objective To investigate the material basis and antitumor mechanism of Marsdenia tenacissima (MT) on hepatocellular carcinoma (HCC) by bioinformatics, network pharmacology and molecular docking technology. Methods Active ingredients of MT were collected by literature search and screened by Swiss ADME website, which targets were predicted by Swiss Target Prediction. The chip data of HCC (GSE147888) were downloaded from the NCBI Gene Expression Omnibus (GEO) database. Differentially expressed genes were screened by R software. HCC-related targets were collected from the Genecards and OMIM databases. The Venny online tool was used to obtain the intersection of the herbal medicine targets and the disease targets. Subsequently, drug-target network and protein–protein interaction (PPI) network were constructed by Cytoscape software and String platform. GO enrichment analysis and KEGG pathway analysis were performed to analysis the functions and pathways enriched by key genes. The expression of key genes in HCC and its effect on survival were analyzed by the GEPIA database. The Human Protein Atlas (HPA) was used to analyze the immunohistochemical expression of key genes in HCC. Finally, molecular docking was carried out to investigate interactions between the top five targets and their related active compounds. Results A total of 50 active components were screened and 12 common targets were identified related to MT and HCC. Scutellarein-4-Methylether, Tenasogenin, Sinapic Acid, Dresgenin and Kaempferol were considered as the critical components. JUN, MMP9 and PTGS2 were recognized as key therapeutic targets. The GO analyses demonstrated that key targets mainly involved in the process of gene silencing and inflammatory response. KEGG analysis suggested that key targets were enriched in TNF signaling pathway and IL-17 signaling pathway. Survival analysis by the GEPIA showed significant differences in the expression of ESR1, MMP1, MMP9, JUN, and PPARG between high and low risk groups. Immunohistochemical results showed that ESR1 and MMP9 were differentially expressed in normal and hepatocellular carcinoma tissues. The molecular docking results verified that the drug active ingredient could be stably bound to the target protein. Conclusion This study reflected the multi-component, multi-target and multi-pathway characteristics of the MT in the treatment of HCC, which could provide a scientific basis for the clinical application of MT in HCC.

Objective To investigate the abnormal functional connectivity (FC) between the cores (including sublaterodorsal nucleus (SLD) and ventrolateral periaqueductal gray matter (vlPAG)) and the whole brain in rapid eye movement sleep behavior disorder (RBD) by resting state functional magnetic resonance imaging (rfMRI).Methods A total of 41 subjects recruited in the Department of Neurology,the People's Hospital of Zhengzhou University were enrolled in this study according to international diagnosis criteria,including 20 with idiopathic RBD (iRBD group) and 21 age,sex-matched normal controls (control group).All subjects were examined by Hoehn-Yahr Staging,cognitive tests and rfMRI.Resluts HoehnYahr staging score was 0(0,0) in the iRBD group,which showed no significant difference from that in the control group (0 (0,0),Z =-1.820,P =0.069).The scores of Rey Auditory Verbal Learning Test (AVLT) N1,AVLT N2,Symbol Digital Modalities Test,Rey-Osterrieth Complex Figure Test-Copy were 3.80 ± 1.67,5.10 ± 1.77,33.00(31.25,34.00) and 22.00(20.25,26.00) respectively in the iRBD group,which were significantly lower than that in the control group (4.95 ± 1.28,t =2.482,P =0.017;6.43±1.16,t =2.848,P=0.007;33.00(29.50,35.50),Z=-3.792,P=0.000;35.00(33.00,36.00),Z =-2.351,P =0.019) respectively.The scores of Trail Making Test 1 (86.5 (70.0,100.0))and Trail Making Test 2 (197.0(180.5,211.5)) in the iRBD group were significantly higher than that in the control group (66.0(49.0,91.5),112.0(99.5,173.0) respectively,Z=-2.373,P=0.018;Z =-3.105,P =0.002).Compared with the control group,the FC analysis showed reduced connections from the right SLD to the bilateral cingnlate gyrus (t =-4.173) and bilateral frontal gyrus (t =-2.965(left),-3.662(right)),from the vlPAG to the left precentral-postcentral gyrus(t =3.930),and from the vlPAG to the right frontal gyrus (t =4.141) in the iRBD.There was no statistically significant difference from the left SLD to the whole brain.Conclusion There were abnormal FCs from the SLD and vlPAG to cognitive and motor areas in RBD patients,perhaps leading to clinical RBD symptoms such as cognitive deterioration and movement disorder.

Objective To investigate the abnormal functional connectivity (FC) between the substantia nigra (SN) and the brain motor area in rapid eye movement sleep behavior disorder (RBD) by Unified Parkinson′s Disease Rating Scale (UPDRS), Hoehn-Yahr Scale and resting state functional magnetic resonance imaging (rfMRI).Methods A total of 34 subjects (14 with RBD (RBD group), 12 with Parkinson′s disease (PD group), and 8 age, sex-matched normal controls (control group)) recruited in the Department of Neurology, Henan Provincial People′s Hospital from 2014 to 2015 were enrolled in this study according to international diagnosis criteria.All subjects were examined by UPDRS, Hoehn-Yahr Scale and rfMRI.Results UPDRS scores and Hoehn-Yahr staging were 0.00 (0.00, 3.75) and 0.00 (0.00, 0.50) respectively in the RBD group, which were significantly different from that in the PD group (30.5 (18.75, 33.00) and 1.75 (1.50, 2.50), respectively;Z=-3.782, P<0.05 and Z=-2.963, P<0.05), whereas not significantly different from that in the control group (0.00 (0.00, 0.00),0.00 (0.00, 0.00), respectively;Z=1.16, P>0.05 and Z=1.10, P>0.05).The FC analysis showed alterations from the right SN to bilateral cerebellum respectively among the three groups (Fright cerebellum=12.975, Fleft cerebellum=6.144;P<0.05);furthermore, there were significant increases in the RBD group compared with the PD group (t=-4.602,-5.080, P<0.005).The FC analysis showed reduced correlation from the right SN to the left prefrontal cortex in the RBD and the PD groups compared with the control group (t=-4.899,-3.500, P<0.005), but there was no statistically significant difference between the RBD and the PD groups (t=2.035, P>0.05).Conclusions There was abnormal FC from the SN to motor areas in RBD patients, and partial alterations were similar as PD patients.rfMRI provided an evidence that RBD might be presymptom of PD.

Objective To observe the effects of nourishing lung and kidney formulas on inflammatory response of alveolar epithelial cells stimulated by monocytes conditioned medium and study the anti-inflammatory mechanism of the formulas for the treatment of chronic obstructive pulmonary diseases (COPD).Methods The reproduction of inflammation models of A549 cells were stimulated by monocyte THP-1 cell strain conditioned medium.A549 cells were randomly divided into blank control group (20％ blank rabbits serum),model group (20％ blank rabbits serum+25.0％ THP-1 cell conditioned medium),nuclear transcription factor activator protein-1 (AP-1) pathway inhibitor T-5224group (20％ blank rabbits serum+25.0％ THP-1 cells conditioned medium+100 μmol/L T-5224),nourishing lung and kidney group (20％ rabbits serum with nourishing lung and kidney formulas+25.0％ THP-1 cells conditioned medium).The contents of interleukins (IL-6,IL-8),tumor necrosis factor-α (TNF-αα),matrix metalloprotein-9 (MMP-9) in cell culture supernatant were detected with enzyme linked immunosorbent assay (ELISA),the supernatant content of malondialdehyde (MDA) was detected with thibabituric acid (TBA) method,the total activity of superoxide dismutase (T-SOD) was detected with hydroxylamine method,and the activity of AP-1 pathway was detected with electrophoretic mobility shift assay (EMSA) method.Results Compared with the blank control group,the A549 cell proliferation were significantly increased at 24 hours,48 hours stimulation by 25.0％ cell conditioned medium (A value:24 hours was 0.41 ± 0.02 vs.0.37 ± 0.04,48 hours was 1.30 ± 0.09 vs.1.15 ± 0.19).Compared with the blank control group,the contents of IL-6,IL-8,TNF-αα,MMP-9,MDA,AP-1 expression were significantly increased in model group [IL-6 (ng/L):35.00±3.63 vs.23.15±1.72,IL-8 (ng/L):273.09± 164.36 vs.231.45±33.90,TNF-α(ng/L):51.61 ± 9.51 vs.28.87 ± 3.34,MMP-9 (ng/L):442.85 ± 78.86 vs.235.60 ± 14.62,MDA (μmol/L):6.90 ± 0.11 vs.6.01 ± 0.12,AP-1 expression (A value):2.260 ± 0.062 vs.1.000 ± 0.000],MDA/T-SOD ratio was increased (4.43 ± 0.05vs.3.96 ± 0.06).Compared with model group,the levels of IL-8 (ng/L:100.29 ± 17.03),TNF-α (ng/L:25.13 ± 0.46),AP-1 expression (A value:1.38 ± 0.02),and the MDA/T-SOD ratio (4.23 ± 0.23) in T-5224 group,and MMP-9 (ng/L:195.44±9.80),MDA (μmol/L:5.86±0.30),MDA/T-SOD ratio (3.56±0.41),AP-1 expression (A value:0.76 ± 0.01) in nourishing lung and kidney group were all reduced significantly (all P ＜ 0.05).Conclusion Nourishing lung and kidney formulas can suppress the inflammatory response through regulating the alveolar epithelial cells AP-1 signaling pathways.