1.Study on the effects of carvacrol on stomach-heat and stomach-cold rats and its mechanism of cooling and clearing based on energy metabolism and gastrointestinal function
Qi ZHANG ; Yi LI ; Hongye LI ; Fengwei ZHANG ; Minghui JIANG ; Xingyu ZHAO ; Linze LI ; Xiaofang WU ; Yinming ZHAO ; Songrui DI ; Jianjun ZHANG ; Chun WANG ; Linyuan WANG
Journal of Beijing University of Traditional Chinese Medicine 2025;48(4):471-482
		                        		
		                        			Objective:
		                        			To investigate the biological effects of carvacrol on rats with stomach-heat and stomach-cold and its regulation on transient receptor potential(TRP) channels in rats with stomach-heat, and to study the cold and heat properties of carvacrol and its possible mechanism.
		                        		
		                        			Methods:
		                        			According to the random number method, 100 SD rats were divided into stomach-heat blank group, stomach-heat model group, Coptidis Rhizoma group, stomach-heat low-dose and high-dose carvacrol group, stomach-cold blank group, stomach-cold model group, Baked ginger group, stomach-cold low-dose group and high-dose carvacrol group, 10 rats in each group. The rat model of stomach-heat was established by intragastric administration of pepper aqueous solution (0.80 g/kg) and anhydrous ethanol, and the rat model of stomach-cold was established by intragastric administration of water extract of Anemarrhena asphodeloides and sodium hydroxide (10.40 g/kg). On the day of modeling, the rats in the Baked ginger group were given Baked ginger decoction (0.78 g/kg), and the rats in the Coptidis Rhizoma group were given Coptidis Rhizoma decoction (0.43 g/kg).The stomach-cold and stomach-heat low-dose group of carvacrol was given carvacrol emulsion (40 mg/kg), high-dose group was given carvacrol emulsion (80 mg/kg).All rats of the blank and model groups were given the equal volume of emulsion prepared by 5% dimethyl sulfoxide, 1% Tween 80, 1% polyethylene glycol 400, and 93% normal saline, once a day, for 7 days. The general condition of rats was observed and the body mass was recorded. The pathological morphology of gastric tissue was observed by hematoxylin-eosin staining. The changes of material and energy metabolism, cyclic nucleotide (cAMP), thyroid hormone and gastrointestinal hormone in each group were determined by enzyme-linked immunosorbent assay. The expression levels of transient receptor potential vanilloid subtype 1 (TRPV1), transient receptor potential channel M8 (TRPM8) and uncoupling protein-1 (UCP1) in rats with gastric fever were detected by Western blotting.
		                        		
		                        			Results:
		                        			Compared with the stomach-heat blank group, the body mass of rats in the stomach-heat model group decreased at the fifth and seventh day (P<0.05). The contents (or ratio) of hepatic glycogen (HGlyc), total cholesterol (TC), triglyceride (TG), and vasoactive intestinal peptide (VIP) were decreased (P<0.05), and Na+ -K+ -ATPase, Ca2+ -Mg2+ -ATPase, cytochrome C oxidase (COX), NADH dehydrogenase (ND), cyclic adenosine phosphate (cAMP), cAMP/cyclic guanosine phosphate (cGMP), triiodothyronine (T3), thyroxine (T4), gastrin (GAS), motilin (MTL), and α-amylase (α-AMS) all increased (P<0.05). Compared with the stomach-heat model group, the body mass of rats in the Coptidis Rhizoma group decreased at the third, fifth, and seventh day, the contents (or ratio) of HGlyc, TC, TG, VIP and α-AMS were increased, and Na+ -K+ -ATPase, COX, ND, cAMP, cAMP/cGMP, T3, T4, and GAS all decreased (P<0.05). The body mass of rats in the stomach-heat low-dose carvacrol group decreased at the seventh day. The contents (or ratio) of HGlyc, TC, and VIP were increased, Na+ -K+ -ATPase, COX, ND, cAMP, cAMP/cGMP, T3, T4, and MTL all decreased, the expression of TRPV1 and UCP1 in gastric tissue decreased, while TRPM8 increased (P<0.05) in rats of the stomach-heat low-dose and high-dose carvacrol groups. Compared with the stomach-cold blank group, the body mass of rats in the stomach-cold model group decreased at the third, fifth, and seventh day, the contents (or ratio) of HGlyc, TC, TG, α-AMS, and VIP all increased, while Na+ -K+ -ATPase, Ca2+ -Mg2+ -ATPase, COX, ND, cAMP, cAMP/cGMP, T3, T4, GAS, and MTL all decreased (P<0.05). Compared with the stomach-cold model group, the body mass of rats in the Baked ginger group was increased at the seventh day, and the contents (or ratio) of HGlyc, VIP, and α-AMS all decreased, while Na+ -K+ -ATPase, COX, ND, cAMP/cGMP, T3, T4, GAS, and MTL all increased (P<0.05). The contents of HGlyc, cAMP, α-AMS, and VIP of rats in the stomach-cold low and high-dose carvacrol group all decreased (P<0.05). TG in the stomach-cold low-dose carvacrol group was increased. TC, Ca2+ -Mg2+ -ATPase, and cGMP all increased, while cAMP/cGMP decreased (P<0.05) in the high-dose carvacrol group.
		                        		
		                        			Conclusion
		                        			In this study, the rat model of stomach-cold and stomach-heat were successfully established by using cold and heat factors. The result showed that carvacrol had a certain inhibitory effect on body mass, material energy metabolism, cyclic nucleotide level, thyroid hormone and gastrointestinal function in rats with stomach-heat, indicating that the drug was cold. Carvacrol′s cold medicinal property could be biologically explained by TRPV1 activation, UCP1 induction, and TRPM8 suppression. 
		                        		
		                        		
		                        		
		                        	
2.Chronic Starvation Stress Promotes Migration Ability of Colorectal Cancer Cells by Inducing ITGB1 Upregulation
Siyu LI ; Jinghua CAO ; Fengwei WANG
Cancer Research on Prevention and Treatment 2024;51(4):240-248
		                        		
		                        			
		                        			Objective To investigate the effects of chronic starvation stress on the proliferation and migration of colorectal cancer cells, as well as the underlying mechanisms. Methods By using prolonged serum starvation to simulate chronic starvation stress in tumor cells, we established enduring serum-deprived models of SW480 and DLD-1 cells and observed cellular morphological change. Effects of prolonged serum starvation on SW480 and DLD-1 proliferative and migratory capabilities were assessed using CCK-8 and Transwell assays. Differential gene-expression analysis on SW480 cultured with 1% FBS or 10% FBS medium was followed by GO and KEGG pathway assessments. Migration-related protein interactions were explored using String database and Metascape software, leading to 16 genes being selected for RT-qPCR validation. Protein levels of ITGB1 and key molecules in the relevant pathways were measured. Mobility changes in SW480 were observed through Transwell assay after ITGB1 knockdown or STAT3 inhibition. Results Prolonged serum starvation significantly inhibited the proliferation of SW480 and DLD-1 cells, and DLD-1 mobility, while enhanced SW480 migration. Transcriptome analysis revealed that prolonged serum deprivation caused the upregulation of 3016 genes, among which 283 were involved in cell migration. Metascape analysis identified the correlations among potential core genes 
		                        		
		                        	
3.Bedside ultrasound monitoring of optic nerve sheath diameter is a predictive factor for 28-day coma, delirium and death in etiologically diverse critically ill patients
Haijun ZHI ; Xiaoya CUI ; Fengwei ZHANG ; Shujuan WANG ; Xuezheng LIANG ; Bo WANG ; Jie CUI ; Yong LI
Chinese Critical Care Medicine 2024;36(10):1088-1094
		                        		
		                        			
		                        			Objective:To explore whether the optic nerve sheath diameter (ONSD) within 24 hours of intensive care unit (ICU) admission is the predictor of 28-day delirium or coma and death in etiologically diverse critically ill patients.Methods:A prospective, observational study was conducted. The critically ill patients admitted to the emergency ICU of Cangzhou Central Hospital from January 2021 to October 2022 were enrolled. Bedside ultrasound monitoring ONSD was performed within 24 hours of ICU admission. The consciousness status was assessed daily during ICU hospitalization. Coma was defined as Glasgow coma scale (GCS) score < 8 or Richmond agitation-sedation scale (RASS) score -4 or -5. Delirium was defined as responsiveness to verbal stimulation and with a positive confusion assessment method-intensive care unit (CAM-ICU). A positive result of CAM-ICU was defined as acute change or fluctuating course of mental status+inattention+altered level of consciousness or disorganized thinking. X-tile software analysis was used to visualize the best cut-off value for creating divisions in predicting 28-day coma or delirium and death, and then Kaplan-Meier curves were plotted. ONSD≥the optimal cut-off value from X-tile analysis was defined as ONSD broadening. ONSD broadening and related indicators were enrolled, and multivariate Cox regression analysis was used to analyze the risk factors of 28-day coma or delirium and 28-day death in etiologically diverse critically ill patients.Results:A total of 321 critically ill patients were enrolled. Of them, 49 had primary brain injury, 54 had hypoxic ischemic brain injury (HIBI) after cardiac arrest, 70 had acute heart failure, 73 had sepsis, and 75 had other causes. Coma affected 184 patients (57.3%), and delirium affected 173 patients (53.9%). At 28 days of follow-up, 100 patients died, 16 patients remained comatose and 20 patients remained delirious. In all patients, as the GCS score decreased upon admission to the ICU, there was a gradually increasing trend in ONSD [GCS score 15 group: 5.20 (4.93, 5.43) mm, GCS score 10-14 group: 5.30 (4.90, 5.65) mm, GCS score 6-9 group: 5.40 (5.10, 5.80) mm, GCS score < 6 group: 5.70 (5.20, 5.96) mm, P < 0.05]. X-tile software analysis showed that in all patients and five etiological subgroups, ONSD broadening was a predictor for 28-day coma or delirium, and the optimal cut-off value was obtained (5.60 mm for all patients, 4.90 mm for primary brain injury, 5.75 mm for HIBI after cardiac arrest, 5.40 mm for acute heart failure, 5.90 mm for sepsis, and 5.75 mm for other causes). The Kaplan-Meier curves were plotted according to the optimal cut-off values, and the results showed that the higher the ONSD, the higher the incidence and duration of coma or delirium within 28 days in above patient population. X-tile software analysis showed that in all patients, and HIBI after cardiac arrest, sepsis and other causes patients, ONSD was a predictor for 28-day death, and the optimal cut-off value was obtained (6.20 mm for all patients, 5.85 mm for HIBI after cardiac arrest, 5.35 mm for sepsis, and 6.10 mm for other causes). The Kaplan-Meier curves were plotted according to the optimal cut-off values, and the results showed that the higher the ONSD, the higher the 28-day survival rate and the shorter survival duration in above patient population. Multivariate Cox regression analysis showed that ONSD broadening was an independent risk factor for 28-day coma or delirium in all patients [hazard ratio ( HR) = 1.513, 95% confidence interval (95% CI) was 1.093-2.095, P = 0.013] and patients with primary brain injury ( HR = 5.739, 95% CI was 2.112-15.590, P = 0.001). However, ONSD broadening was not independently associated with 28-day death in all patients or in the five etiological subgroups. Conclusions:ONSD within 24 hours of ICU admission is an independent risk factor for 28-day coma or delirium in etiologically diverse critically ill patients. It serves as a predictor for 28-day coma or delirium in 5 subgroups of etiology including primary brain injury, HIBI after cardiac arrest, acute heart failure, sepsis, and other causes, but not for 28-day death.
		                        		
		                        		
		                        		
		                        	
4.Clinicopathological and molecular genetic features of POLE-mutated endometrioid carcinoma
Xin CHEN ; Yun WANG ; Zhouhuan DONG ; Fengwei ZHU ; Xia TIAN ; Aijun LIU
Chinese Journal of Pathology 2024;53(12):1217-1223
		                        		
		                        			
		                        			Objective:To investigate the clinicopathological and molecular genetic features of POLE mutant endometrioid carcinoma.Methods:Genetic test data of 230 cases of endometrial carcinoma that underwent surgical resection and molecular typing by next generation sequencing in the First Medical Center of Chinese PLA General Hospital from January 2021 to June 2023 were retrospectively analyzed. Seventeen cases of endometrioid carcinoma with POLE mutation were selected. Clinical and prognostic information was collected. The paraffin-embedded tissue and immunohistochemical sections were reviewed, and the gene detection data were analyzed.Results:In the 17 cases of endometrioid carcinoma with POLE mutations, 16 cases (16/230, 6.9%) had mutations at known pathogenic sites, and 1 case had a mutation site (S459Y) that had not been reported, which was inferred to be pathogenic based on clinical prognosis. The 17 patients aged from 48 to 79 years (median 56 years, mean 58 years). All cases had typical histological features of endometrioid carcinoma, including 7 cases (7/17) of poorly-differentiated, 4 cases (4/17) of moderately-differentiated and 6 cases (6/17) of well-differentiated. Squamous differentiation was noted, mucous differentiation was less commonly found and often accompanied by superficial muscle infiltration. The number of stromal lymphocyte infiltration was variable. Lymph-vascular embolus was found in 6 cases, and lymph node metastasis was only detected in 1 case. According to the FIGO staging system for endometrial cancer in 2023, all the cases were in FIGO stage ⅠA m-POLEmut except for one case in FIGO stage ⅢC1. There were 8 cases with genetic co-mutation, 5 cases with TP53 mutation (immunohistochemically subclonal expression pattern), 1 case with MSI-H, and 2 cases with both TP53 mutation and MSI-H. Five of 7 patients with POLE mutation (poorly-differentiated) received postoperative chemotherapy and/or radiotherapy, 4 patients received endocrine therapy, and 8 patients had no treatment after surgery. One of the stage ⅠA m-POLEmut tumor patients was found to have pelvic recurrence one year after surgery, and the other 16 patients were followed up for 10-38 months without recurrence or metastasis. Conclusions:POLE mutant endometrioid carcinoma may have different differentiation, and most patients have good prognosis. Correct interpretation of molecular results, accurate identification and classification are important for predicting prognosis and avoiding overtreatment. However, a small number of cases may have recurrence and metastasis, and therefore it is necessary to make a reasonable treatment plan based on the comprehensive judgment of other high risk factors.
		                        		
		                        		
		                        		
		                        	
5.Research on diagnostic value of thrombin-antithrombin complex,thrombomodulin and tissue plasminogen activator-inhibitor complex for COVID-19
Fengwei GAO ; Lin ZHOU ; Xiaobao SHAO ; Hua WANG ; Yuan YANG ; Xin CHEN ; Yi LIU ; Peiyuan ZHU
Chinese Journal of Clinical Laboratory Science 2024;42(10):748-753
		                        		
		                        			
		                        			Objective To retrospectively analyze the diagnostic value of thrombin-antithrombin complex(TAT),thrombomodulin(TM),and tissue plasminogen activator-inhibitor complex(t-PAIC)in severe cases of corona virus disease 2019(COVID-19).Methods A cohort of 79 patients clinically diagnosed with COVID-19 was retrospectively assembled and categorized into two groups based on disease severity:non-severe(n=51)and severe(n=28).In this study the differences of coagulation function and inflamma-tory marker levels between the two groups were compared.The correlations of TAT,TM and t-PAIC with other biomarkers were investi-gated.The diagnostic values of all the markers for severe COVID-19 were assessed.Results The patients of severe COVID-19 exhibi-ted significantly higher levels of TAT,TM,and t-PAIC compared to those of non-severe group(P<0.001).The levels of TAT,TM and t-PAIC showed notable positive correlation with other biomarkers.TAT demonstrated the strongest positive correlation with the level of D-dimer(r=0.786,P<0.001).Binary logistic regression analysis identified TAT(OR=1.346,P<0.05)and t-PAIC(OR=1.128,P<0.05)were independent risk factors in term of severe COVID-19.The combined ROC curve for TAT,TM and t-PAIC revealed high diagnostic efficacy in severe cases with the area under the curve(AUCROC)were 0.918,and the sensitivity and specificity were of 75%and 94.1%,respectively.Conclusion The results of combined measurement of TAT,TM and t-PAIC effectively demonstrates its diagnostic value in identifying severity and stratification of COVID-19 cases and may have important clinical significance for assessment of the severity and prediction of the prognosis.
		                        		
		                        		
		                        		
		                        	
6.Predictive value of foramen ovale size on pain recurrence after percutaneous balloon compression.
Chuansheng LI ; Jie YANG ; Fengwei HAN ; Tiemin HU ; Jiwei ZHANG ; Bing LIU ; Lina YAN ; Wenxia LIU ; Kunpeng WANG
Journal of Central South University(Medical Sciences) 2023;48(5):682-690
		                        		
		                        			OBJECTIVES:
		                        			Primary trigeminal neuralgia (PTN) is a common cranial nerve disease in neurosurgery, which seriously endangers the physical and mental health of patients. Percutaneous balloon compression (PBC) has become an effective procedure for the treatment of PTN by blocking pain conduction through minimally invasive puncture. However, the recurrence of facial pain after PBC is still a major problem for PTN patients. Intraoperative balloon shape, pressure and compression time can affect the prognosis of patients with PBC after surgery. The foramen ovale size has an effect on the balloon pressure in Meckel's lumen. This study aims to analyse the predictive value of foramen ovale size for postoperative pain recurrence of PBC by exploring the relationship between foramen ovale size and postoperative pain recurrence of PBC.
		                        		
		                        			METHODS:
		                        			A retrospectively analysis was conducted on the clinical data of 60 patients with PTN who were treated with PBC in Department of Neurosurgery, Affiliated Hospital of Chengde Medical College from November 2018 to December 2021. We followed-up and recorded the Barrow Neurological Institute (BNI) pain score at 1, 3, 6 and 12 months after operation. According to the BNI pain score at 12 months after surgery, the patients were divided into a cure group (BNI pain score I to Ⅱ) and a recurrence group (BNI pain score Ⅲ to Ⅴ). The long diameter, transverse diameter and area of foramen ovale on the affected side and the healthy side of the 2 groups were measured. Receiver operating characteristic (ROC) curve and area under the curve (AUC) were used for analysis the relationship between the recurrence of pain and the long diameter, transverse diameter, area of foramen ovale on the affected side, and aspect ratio, transverse diameter ratio, area ratio of foramen ovale on the affected side to healthy side in the 2 groups.
		                        		
		                        			RESULTS:
		                        			At the end of 12 months of follow-up, 50 (83.3%) patients had pain relief (the cured group), 10 (16.7%) patients had different degrees of pain recurrence (the recurrence group), and the total effective rate was 83.3%. There were no significant differences in preoperative baseline data between the 2 groups (all P>0.05). The long diameter of foramen ovale on the affected side, the long diameter ratio and area ratio of foramen ovale on the affected/healthy side in the cured group were significantly higher than those in the recurrence group (all P<0.05), and there were no significant differences in the transverse diameter and area of foramen ovale on the affected side and the transverse diameter ratio of foramen ovale on the affected/healthy side between the 2 groups (all P>0.05). The ROC curve analysis showed that the AUC of the long diameter of foramen ovale on the affected side was 0.290 (95% CI 0.131 to 0.449, P=0.073), and the AUC of aspect ratio of foramen ovale on the affected side to healthy side was 0.792 (95% CI 0.628 to 0.956, P=0.004). The AUC of area ratio of foramen ovale on the affected side to healthy side was 0.766 (95% CI 0.591 to 0.941, P=0.008), indicating that aspect ratio and area ratio of foramen ovale on the affected side to healthy side had a good predictive effect on postoperative pain recurrence of PBC. When aspect ratio of foramen ovale on the affected side to healthy side was less than 0.886 3 or area ratio of foramen ovale on the affected side to healthy side was less than 0.869 4, postoperative pain recurrence was common.
		                        		
		                        			CONCLUSIONS
		                        			Accurate evaluation of the foramen ovale size of skull base before operation is of great significance in predicting pain recurrence after PBC.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Foramen Ovale
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Trigeminal Neuralgia/surgery*
		                        			;
		                        		
		                        			Pain, Postoperative/etiology*
		                        			;
		                        		
		                        			Recurrence
		                        			
		                        		
		                        	
7.A preliminary study to evaluate the efficacy and safety of CT-guided localization of pulmonary nodules with soft wire hook-wire by trailing technique
Fengwei LI ; Xing XIN ; Yingtai CHEN ; Jianwei BIAN ; Yanjie WANG ; Ruiheng JIANG ; Shunwu YANG ; Xun WU ; Sijie LIU
Chinese Journal of Postgraduates of Medicine 2023;46(5):406-410
		                        		
		                        			
		                        			Objective:The purpose of this study was to investigate the clinical value of CT-guided localization of pulmonary nodules with soft wire hook-wire by trailing technique.Methods:The clinical data of 211 pulmonary nodules of 185 patients from November 2020 to March 2022 in Beijing Aerospace General Hospital were retrospectively analyzed. The pulmonary nodules were localized with soft wire hook-wire by trailing technique before video-assisted thoracic surgery (VATS). The success rate, complications, pathological results and localization operations related data were statistically analyzed.Results:The success rate of localization was 97.63% (206/211), and the success rate of VATS removal was 99.53% (210/211). The average operation time was (7.19 ± 2.62) min, and the average time required for resection of lesions was 27 min (10 to 126 min). During the surgery, the soft wire hook-wire of two patient was found to be dislocated and retracted into the chest wall. The pulmonary nodules were successfully located and removed according traces left by puncture points on the lung surface. It was found that the hook-wire was located in the interlobar fissure in 3 patients. The pulmonary nodules were successfully removed by the hook-wire position and appropriately expanding the resection range. A minor pneumothorax occurred in 49 patients, but no closed drainage was needed; 12 patients developed intrapulmonary hematoma; 15 patients with chest pain were treated with analgesia.Conclusions:For small pulmonary nodules requiring thoracoscopic surgery, the computed tomography-guided pulmonary nodule localization with soft wire hook-wire by trailing technique is more convenient, safe and effective, and is worthy of promotion to use.
		                        		
		                        		
		                        		
		                        	
8.Effect of CTRP9 on lipid metabolism in brown adipose tissue of mice induced by cold stimulation
Hua Guan ; Huanhuan Chang ; Xiangyu Li ; Xue Wang ; Yang Gao ; Junjun Hao ; Fengwei Guo ; Tao Shi
Acta Universitatis Medicinalis Anhui 2023;58(4):577-580
		                        		
		                        			Objective:
		                        			To  explore  the  effect  of  C1q / tumor necrosis factor-related protein 9  ( CTRP9 ) on the  expression of genes and proteins related to lipid metabolism of brown adipose tissue  (BAT) in mice after cold stimulation.
		                        		
		                        			Methods :
		                        			C57BL /6J male mice were injected with  adenovirus Ad-GFP  (control  group) or Ad-CTRP9  ( experience group) into the scapular region and kept for 7 days.After cold stimulation at 4 ℃  for 10  hours,the expression levels of BAT marker genes and proteins were detected by real time PCR  and  Western blot.  
		                        		
		                        			Results:
		                        			Overexpression of CTRP9 induced by cold stimulation significantly increased the mRNA level of iodothyronine deiodinase 2  (Dio2) in BAT  (P<0. 01) .Additionally,there  was  no  significant difference in the expression of BAT marker genes  ( UCP-1,PGC-1 α , PRDM16  and ARβ3) ,and  liposynthesis  and  lipolysis  related  genes  (PPARγ ,  HSL and ATGL) .Uncoupling protein 1  (UCP-1) protein expression was upregualted in Ad-CTRP9 compared to the  Ad-GFP control  group ,while  the  expression  of lipolysis  related  protein  adipose  triglyceride  lipase  ( ATGL)  decreased significantly  (P<0. 05) .
		                        		
		                        			Conclusion
		                        			In cold environment,overexpression of CTRP9 promotes the accumulation of UCP-1 protein in BAT,upregulates the expression of thyroid hormone signal related gene Dio2,and inhibits triglyceride hydrolysis to maintain a constant body temperature.
		                        		
		                        		
		                        		
		                        	
9.Construction of the "Internet + " PICC home nursing service quality evaluation index system
Chunbo LIU ; Qingwen SU ; Simeng WANG ; Qian XU ; Fengwei ZHU ; Haiping YANG ; Wenmin SU ; Zhiren SHENG
Chinese Journal of Modern Nursing 2023;29(33):4507-4514
		                        		
		                        			
		                        			Objective:To construct the "Internet +" peripherally inserted central catheter (PICC) home nursing service quality evaluation index system, so as to provide objective basis for standardizing the "Internet +" PICC home nursing service quality evaluation.Methods:Based on the three-dimensional quality structure model of "structure-process-outcome", combined with literature research, semi-structured interviews, group discussions and Delphi method, 20 experts who were engaged in intravenous therapy nursing and had management or practical experience in "Internet + nursing services" were selected for two rounds of consultation to determine the "Internet?+" PICC home nursing service quality evaluation index system. The positive coefficient of experts was expressed by the effective response rate of the questionnaire and the rate of expert opinion submission. The degree of expert authority was expressed by the expert authority coefficient. The coordination degree of expert opinions was represented by the Kendall harmony coefficient. The concentration degree of expert opinions was usually expressed in terms of the importance assigned to the indicator, the coefficient of variation, and the full score rate (%) .Results:The effective response rates of the two rounds of consultation questionnaires were all 100%, with expert authority coefficients of 0.793 and 0.848 respectively. The Kendall coordination coefficients of expert opinions were 0.202-0.216 and 0.222-0.270 respectively ( P<0.05). After the second round of expert consultation, the mean importance assigned to all indicators was greater than 4.0, the coefficient of variation was less than 0.2, and the full score rate was greater than 20%. The final "Internet +"PICC home nursing service quality evaluation index system included 3 first-level indicators, 12 second-level indicators and 64 third-level indicators. Conclusions:The "Internet + " PICC home nursing service quality evaluation index system constructed is scientific, reliable and practical, and reflects the specialty characteristics. It can effectively evaluate the "Internet + " PICC home nursing service quality and provide guidance for continuous improvement.
		                        		
		                        		
		                        		
		                        	
10.Seroprevalence of influenza viruses in Shandong, Northern China during the COVID-19 pandemic.
Chuansong QUAN ; Zhenjie ZHANG ; Guoyong DING ; Fengwei SUN ; Hengxia ZHAO ; Qinghua LIU ; Chuanmin MA ; Jing WANG ; Liang WANG ; Wenbo ZHAO ; Jinjie HE ; Yu WANG ; Qian HE ; Michael J CARR ; Dayan WANG ; Qiang XIAO ; Weifeng SHI
Frontiers of Medicine 2022;():1-7
		                        		
		                        			
		                        			Nonpharmaceutical interventions (NPIs) have been commonly deployed to prevent and control the spread of the coronavirus disease 2019 (COVID-19), resulting in a worldwide decline in influenza prevalence. However, the influenza risk in China warrants cautious assessment. We conducted a cross-sectional, seroepidemiological study in Shandong Province, Northern China in mid-2021. Hemagglutination inhibition was performed to test antibodies against four influenza vaccine strains. A combination of descriptive and meta-analyses was adopted to compare the seroprevalence of influenza antibodies before and during the COVID-19 pandemic. The overall seroprevalence values against A/H1N1pdm09, A/H3N2, B/Victoria, and B/Yamagata were 17.8% (95% CI 16.2%-19.5%), 23.5% (95% CI 21.7%-25.4%), 7.6% (95% CI 6.6%-8.7%), and 15.0 (95% CI 13.5%-16.5%), respectively, in the study period. The overall vaccination rate was extremely low (2.6%). Our results revealed that antibody titers in vaccinated participants were significantly higher than those in unvaccinated individuals (P < 0.001). Notably, the meta-analysis showed that antibodies against A/H1N1pdm09 and A/H3N2 were significantly low in adults after the COVID-19 pandemic (P < 0.01). Increasing vaccination rates and maintaining NPIs are recommended to prevent an elevated influenza risk in China.
		                        		
		                        		
		                        		
		                        	
            

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