Objective To explore the value of MRI quantitative parameters and free/total prostate-specific antigen ratio(f/tPSA)for diagnosing prostate imaging reporting and data system(PI-RADS)3-point clinically significant prostate cancer(csPCa).Methods Totally 57 patients with PI-RADS 3-point prostate lesions were retrospectively enrolled,including 18 prostate cancer(PCa)(PCa group)and 39 benign hyperplasia with chronic prostatitis(non-PCa group).The former included 12 cases of csPCa and 6 cases of clinically insignificant PCa(ciPCa).Taken non-PCa and ciPCa into non-csPCa group(n=45),laboratory and MRI parameters(apparent diffusion coefficient[ADC],T1,T2,proton density[PD]values)were compared between PCa and non-PCa groups,also between csPCa and non-csPCa groups.Based on laboratory and MRI parameters being statistically different between groups according to univariate analysis,combined models were established using logistic regression.The efficacy of laboratory,MRI parameters and combined models for differentiating PCa and non-PCa as well as csPCa and non-csPCa were evaluated.Results ADC,T1,T2,PD values in PCa group were all lower those in non-PCa group(all P＜0.05),and f/tPSA,ADC,T1,T2 and PD values in csPCa group were all lower than those in non-csPCa group(all P＜0.05).AUC of ADC,T1,T2 and PD values for differentiating PCa from non-PCa was 0.662,0.755,0.793 and 0.729 respectively,while of ADC-T1-T2-PD combined model was 0.839,higher than that of ADC alone(P＜0.05)but not significantly different with T1,T2 and PD values alone(all P＞0.05).AUC of f/tPSA,ADC,T1,T2 and PD values for differentiating csPCa from non-csPCa was 0.692,0.759,0.741,0.805 and 0.737,respectively,while of ADC-T1-T2-PD combined model was 0.889,higher than that of f/tPSA,ADC and T1 values alone(all P＜0.05)but not significantly different with that of T2 and PD value alone(both P＞0.05).AUC of f/tPSA-ADC-T1-T2-PD combined model was 0.898,higher than that of f/tPSA,ADC,T1 and PD values alone(all P＜0.05)but not significantly different with T2 value and ADC-T1-T2-PD combined model(both P＞0.05).Conclusion MRI quantitative parameters combined with f/tPSA could effectively diagnose PI-RADS 3-point csPCa.

Objective To explore the function of electroacupuncture(EA)on body mass,fasting blood glucose,heat pain threshold,and transient receptor potential vanilloid 4(TRPV4)in the dorsal root ganglia(DRG)of rats with diabetic neuropathic pain(DNP).Methods A DNP rat model was formed by intraperitoneally injecting the animals with STZ.From days 15 to 21,bilateral Zusanli and Kunlun points of the DNP rat model were treated with electroacupuncture once daily for 30 min.We then measured their body mass,fasting blood glucose,and heat pain threshold.The co-expression of TRPV4 and NeuN in the rat L4～L6 DRG was detected by immunofluorescence.The effects of the TRPV4 agonist GSK1016790A on body mass,fasting blood glucose,and the heat pain threshold of DNP rats treated with electroacupuncture were detected.Results After the 7th day,body mass was significantly decreased(P<0.01)and fasting glucose was significantly increased(P<0.01)in the model group compared with the normal group.After the 21st day,compared with the model group,heat pain threshold of the model+electroacupuncture group was significantly higher(P<0.01);the results of co-expression of TRPV4 and NeuN immunofluorescence on rat L4～L6 DRG showed that:the expression of positive cells in the model group was significantly higher(P<0.01)than that in the normal group,the co-expression of TRPV4 and NeuN positive cells in L4～L6 DRG of rats in the model+electroacupuncture group was significantly lower(P<0.01)than that in the model group.The TRPV4 agonist GSK1016790A can reverse the downregulation of thermal pain threshold induced by electroacupuncture in DNP rats(P<0.01).Conclusion Electroacupuncture alleviated the DNP induced by STZ,and its mechanism may involve the inhibition of TRPV4 protein expression in the DRG.

Objective To explore the value of MRI quantitative parameters and free/total prostate-specific antigen ratio(f/tPSA)for diagnosing prostate imaging reporting and data system(PI-RADS)3-point clinically significant prostate cancer(csPCa).Methods Totally 57 patients with PI-RADS 3-point prostate lesions were retrospectively enrolled,including 18 prostate cancer(PCa)(PCa group)and 39 benign hyperplasia with chronic prostatitis(non-PCa group).The former included 12 cases of csPCa and 6 cases of clinically insignificant PCa(ciPCa).Taken non-PCa and ciPCa into non-csPCa group(n=45),laboratory and MRI parameters(apparent diffusion coefficient[ADC],T1,T2,proton density[PD]values)were compared between PCa and non-PCa groups,also between csPCa and non-csPCa groups.Based on laboratory and MRI parameters being statistically different between groups according to univariate analysis,combined models were established using logistic regression.The efficacy of laboratory,MRI parameters and combined models for differentiating PCa and non-PCa as well as csPCa and non-csPCa were evaluated.Results ADC,T1,T2,PD values in PCa group were all lower those in non-PCa group(all P＜0.05),and f/tPSA,ADC,T1,T2 and PD values in csPCa group were all lower than those in non-csPCa group(all P＜0.05).AUC of ADC,T1,T2 and PD values for differentiating PCa from non-PCa was 0.662,0.755,0.793 and 0.729 respectively,while of ADC-T1-T2-PD combined model was 0.839,higher than that of ADC alone(P＜0.05)but not significantly different with T1,T2 and PD values alone(all P＞0.05).AUC of f/tPSA,ADC,T1,T2 and PD values for differentiating csPCa from non-csPCa was 0.692,0.759,0.741,0.805 and 0.737,respectively,while of ADC-T1-T2-PD combined model was 0.889,higher than that of f/tPSA,ADC and T1 values alone(all P＜0.05)but not significantly different with that of T2 and PD value alone(both P＞0.05).AUC of f/tPSA-ADC-T1-T2-PD combined model was 0.898,higher than that of f/tPSA,ADC,T1 and PD values alone(all P＜0.05)but not significantly different with T2 value and ADC-T1-T2-PD combined model(both P＞0.05).Conclusion MRI quantitative parameters combined with f/tPSA could effectively diagnose PI-RADS 3-point csPCa.

Systemic sclerosis is an autoimmune rheumatic disease that often leads to multisystem diseases,frequently resulting in pulmonary interstitial fibrosis.According to the theory of sanjiao(triple energizers)membranous channels,sanjiao connects the five zang-organs and six fu-viscera internally and the skin,muscles,and bones externally.It serves as a four-way membranous channel that connects internal organs and external structures,linking with the micromembranes of organs and blood vessels.The pathogenesis of pulmonary interstitial fibrosis secondary to systemic sclerosis involves external cold obstructing the skin and interstitial layers,impairing the defense qi and defense yang,which originate in the essence of the kidney.This leads to weak defensive qi and kidney deficiency,causing stagnation in sanjiao's energy flow and disruption of water and gasification and loss of fluid,resulting in accumulation of dampness,phlegm,and blood stasis.These obstructive factors spread along sanjiao's membranous channels,leading to multiorgan micromembrane involvement and systemic damage.The lungs,which are in direct contact with the external environment,are particularly susceptible to invasion by external pathogens.When combined with stagnation of dampness,phlegm,and blood in the lungs,this leads to secondary pulmonary fibrosis,resulting in lung dysfunction.Continuous stagnation of sanjiao exacerbates the overall condition of the patient,leading to a mixed cold-heat imbalance.Treatment focuses on"unblocking,transforming,and regulating"to restore sanjiao function,promote qi and fluid circulation,invigorate blood,and adjust the cold-heat imbalance,ultimately restoring the overall condition of the patient.

Systemic sclerosis is an autoimmune rheumatic disease that often leads to multisystem diseases,frequently resulting in pulmonary interstitial fibrosis.According to the theory of sanjiao(triple energizers)membranous channels,sanjiao connects the five zang-organs and six fu-viscera internally and the skin,muscles,and bones externally.It serves as a four-way membranous channel that connects internal organs and external structures,linking with the micromembranes of organs and blood vessels.The pathogenesis of pulmonary interstitial fibrosis secondary to systemic sclerosis involves external cold obstructing the skin and interstitial layers,impairing the defense qi and defense yang,which originate in the essence of the kidney.This leads to weak defensive qi and kidney deficiency,causing stagnation in sanjiao's energy flow and disruption of water and gasification and loss of fluid,resulting in accumulation of dampness,phlegm,and blood stasis.These obstructive factors spread along sanjiao's membranous channels,leading to multiorgan micromembrane involvement and systemic damage.The lungs,which are in direct contact with the external environment,are particularly susceptible to invasion by external pathogens.When combined with stagnation of dampness,phlegm,and blood in the lungs,this leads to secondary pulmonary fibrosis,resulting in lung dysfunction.Continuous stagnation of sanjiao exacerbates the overall condition of the patient,leading to a mixed cold-heat imbalance.Treatment focuses on"unblocking,transforming,and regulating"to restore sanjiao function,promote qi and fluid circulation,invigorate blood,and adjust the cold-heat imbalance,ultimately restoring the overall condition of the patient.

Objective To construct a swallowing dynamic model for simulating dysphagia caused by reduced tongue movement am-plitude.Methods A swallowing dynamic model was established based on medical imaging data from CT and videofluoroscopic swallowing study(VFSS).The finite element method was used to simulate soft tissues,while the smoothed parti-cle hydrodynamics method(SPH)was used to simulate bolus.The model's posture at each time point was com-pared with the imaging data of VFSS from twelve patients with dysphagia,and a normalization method was used for quantitative evaluation of the model's validity.By adjusting the tongue movement amplitude under different viscosity conditions,the role of tongue movement in the swallowing process was investigated,and the swallow-ing safety and efficiency were assessed.Results The tongue posture and bolus trajectory presented by the swallowing dynamic model were consistent with the VFSS imaging.The brightness in the epiglottis area in VFSS images correlated with the equivalent brightness of SPH particles in the simulation results(r=0.97).As the tongue movement amplitude reducing by 20%,the num-ber of aspirated particles,swallowing efficiency and the average velocity of bolus particles in the oropharyngeal cavity all performed well.Pudding-like fluids exhibited favorable swallowing characteristics even when tongue movement amplitude reducing significantly.Conclusion The swallowing dynamic model can simulate the human swallowing process,providing good support for re-habilitation training of patients with dysphagia and the development of specialized medical foods,demonstrating significant potential for clinical applications.

Aim To evaluate the tyrosine nitration modification of specific proteins in vascular endothelial cells and its impact on mitochondria-mediated apoptosis.Methods Human umbilical vein endothelial cells were cultured in vitro and divided into three groups:control group(treatment with dimethyl sulfoxide),3-morphansulam(SIN-1)group,and SIN-1+Fe(Ⅲ)5,10,15,20-(tetraphenyl)porphyrin(FeTPP)group.After 24 h,the levels of hexokinase 1(HK1)nitration modification,mitochondrial membrane potential,reactive oxygen species(ROS)production,and endothelial cell proliferation and apoptosis were assessed.A human umbilical vein endothelial cell line knockout of HK1 was constructed using gene editing technology,and its proliferation and apoptosis levels were detected.Results After treatment of hu-man umbilical vein endothelial cells with peroxynitrite generator SIN-1,the level of HK1 protein nitration modification sig-nificantly increased(P＜0.01),reactive oxygen species production significantly increased,mitochondrial membrane poten-tial significantly decreased,endothelial cell proliferation ability significantly decreased,and endothelial cell apoptosis level significantly increased(all P＜0.01).Peroxynitrite decomposition catalyst FeTPP could reverse the above effect(P＜0.01).In addition,HK1 gene knockout also exhibited similar antioxidant effects,with a significant decrease in endothe-lial cell proliferation ability and a significant increase in apoptosis levels(P＜0.01).Conclusion Peroxynitrite can induce an increase in the level of nitration modification of HK1 in vascular endothelial cells,which may be achieved by pro-moting the production of mitochondrial reactive oxygen species,thereby accelerating the process of endothelial cell apoptosis.

Aim To evaluate the tyrosine nitration modification of specific proteins in vascular endothelial cells and its impact on mitochondria-mediated apoptosis.Methods Human umbilical vein endothelial cells were cultured in vitro and divided into three groups:control group(treatment with dimethyl sulfoxide),3-morphansulam(SIN-1)group,and SIN-1+Fe(Ⅲ)5,10,15,20-(tetraphenyl)porphyrin(FeTPP)group.After 24 h,the levels of hexokinase 1(HK1)nitration modification,mitochondrial membrane potential,reactive oxygen species(ROS)production,and endothelial cell proliferation and apoptosis were assessed.A human umbilical vein endothelial cell line knockout of HK1 was constructed using gene editing technology,and its proliferation and apoptosis levels were detected.Results After treatment of hu-man umbilical vein endothelial cells with peroxynitrite generator SIN-1,the level of HK1 protein nitration modification sig-nificantly increased(P＜0.01),reactive oxygen species production significantly increased,mitochondrial membrane poten-tial significantly decreased,endothelial cell proliferation ability significantly decreased,and endothelial cell apoptosis level significantly increased(all P＜0.01).Peroxynitrite decomposition catalyst FeTPP could reverse the above effect(P＜0.01).In addition,HK1 gene knockout also exhibited similar antioxidant effects,with a significant decrease in endothe-lial cell proliferation ability and a significant increase in apoptosis levels(P＜0.01).Conclusion Peroxynitrite can induce an increase in the level of nitration modification of HK1 in vascular endothelial cells,which may be achieved by pro-moting the production of mitochondrial reactive oxygen species,thereby accelerating the process of endothelial cell apoptosis.

Objective To investigate the relationship between triglyceride glucose body mass index(TyG-BMI),high density lipoprotein cholesterol to Apolipoprotein A ratio(HAR),glycemic risk index(GRI)and diabetic retinopathy(DR).Methods A total of 159 patients with type 2 diabetes mellitus(T2DM)complicated with DR(the DR group)were divided into the non-proliferative retinopathy group(NPDR group,66 cases)and the proliferative retinopathy group(PDR group,93 cases)according to DR international clinical grading criteria,and 159 T2DM patients without DR were selected as the control group.Clinical information and baseline laboratory test results were recorded,and TyG-BMI,HAR and GRI were calculated.Multivariate Logistic regression analysis was conducted to analyze the related factors of the incidence of DR,and receiver operating characteristic(ROC)curve was used to analyze the diagnostic value of TyG-BMI,HAR and GRI for DR.Results The duration of T2DM,the proportion of hypertension,diabetic nephropathy and diabetic foot,levels of HbA1c,homeostasis model insulin resistance index(HOMA-IR),total cholesterol(TC),C-reactive protein(CRP),TyG-BMI,HAR and GRI were higher in the DR group than those in the control group(P<0.05).TyG-BMI,HAR and GRI were higher in the PDR group than those in the NPDR group(P<0.05).Multivariate Logistic regression analysis showed that the longer course of T2DM disease[OR(95%CI):2.781(1.398-5.534)],high TyG-BMI[2.036(1.169-3.546)],high HAR[1.890(1.090-3.280)]and high GRI[1.836(1.065-3.167)]were risk factors for DR(P<0.05).ROC curve analysis results showed that,the area under the curve(AUC)of combined TyG-BMI,HAR and GRI diagnosis of DR was higher than that of single diagnosis[0.940(0.908-0.964),0.864(0.821-0.900),0.796(0.747-0.839)and 0.836(0.790-0.875),all P<0.05].Conclusion The increased TyG-BMI,HAR and GRI in T2DM patients is associated with the onset and severity of DR,and which can be used to assess the risk of DR.

Objective:To evaluate the efficacy and safety of nebulized inhalation of recombinant human interferon (IFN) α1b injection in the treatment of respiratory syncytial virus (RSV) associated lower respiratory tract infections (pneumonia and bronchiolitis) in children.Methods:A randomized, double-blind, parallel, placebo-controlled add-on design was used.Children with pneumonia or bronchiolitis aged 2 months to 5 years who tested positive for RSV antigen within 72 hours of onset from 30 clinical trial sites including Beijing Children′s Hospital, Capital Medical University between February 2021 and December 2022 were included in this study and randomly divided into 2 groups at a ratio of 1∶1 based on a stratified-block method.Both groups received basic treatments such as cough control, asthma relieving, expectorant treatment, fever reduction, oxygen therapy, etc.The experimental group received additional nebulized inhalation of IFN α1b injection at a dose of 2.0 μg/(kg·time), twice a day.The control group received nebulized inhalation of placebo twice a day.Clinical efficacy was evaluated based on indicators such as the duration of clinical symptoms and signs, and the Kaplan-Meier method was used to calculate the median and 95% CI of the duration of clinical symptoms and signs.The Log-rank test was used to compared data between groups.Safety was assessed through the incidence of adverse reactions and laboratory tests, and the Chi-square test was used to analyze the difference between groups. Results:There were 123 children in the experimental group and 122 children in the control group.The median durations of all the 5 clinical symptoms and signs [including shortness of breath, wheezing, dyspnea (visible retractions), decreased transcutaneous oxygen saturation, and abnormal mental state] in the experimental group after treatment were slightly shortened than those in the control group [2.7 d(95% CI: 1.9-3.0 d)] vs.[2.9 d(95% CI: 2.6-3.6 d), P=0.027].The improvement in dyspnea (retractions) was especially pronounced in the experimental group, with a relief rate of 50.0% (0, 100%) on the first day of administration[compared with 0 (0, 50.0%) in the control group ( Z=2.002, P=0.025)].The median duration of dyspnea in the experimental group was nearly 1 day shorter than that in the control group [1.0 d(95% CI: 0.7-1.7 d) vs.1.8 d(95% CI: 1.0-2.5 d), P=0.046].There were no significant difference in hospital stay [6.0(5.0, 8.0) d vs.6.5(5.0, 8.0) d, Z=0.675, P=0.500], oxygen therapy duration [32.0(14.0, 96.3) h vs.39.0 (24.0, 83.2) h, Z=0.094, P=0.925], the recovery rate from clinical symptoms during treatment [(105/106, 99.1%) vs.(96/101, 95.0%)], and recurrence rate [(0/106, 0) vs.(2/101, 2.0%)] between the 2 groups (all P>0.05).However, the above-mentioned four indicators in the experimental group showed a trend of clinical benefits.The quantitative virus detection results showed that the RSV viral load in both groups decreased after treatment compared to before treatment.After 2 days of treatment, the decline rate of RSV viral load from the baseline was 0.90 lg copies/(mL·d) in the experimental group and 0.25 lg copies/(mL·d)in the control group, with a statistically significant difference ( P<0.05).Furthermore, there was no statistically significant difference in the incidence of adverse reactions between the 2 groups ( P>0.05).Importantly, no drug-related serious adverse reactions occurred in both groups. Conclusions:The nebulized inhalation therapy of IFN α1b demonstrates efficacy and safety in treating pediatric RSV associated lower respiratory tract infections.It particularly offers outstanding clinical therapeutic value for severe children.