Objective To determine the clinical significance of pulmonary function test(PFT)in evaluating the features and severity of lung impairments associated with connective tissue diseases(CTD)by comparing the differences of pulmonary function test parameters among groups of CTD associated pulmonary disorders.Methods Cases of CTD associated pulmonary disorders were prospectively enrolled and assigned into 3 groups according to their lung impairments:CTD associated pulmonary arterial hypertension group (CTD-PAH,n=29),CTD associated interstitial lung disease group(CTD-ILD,n=35),CTD associated PAH plus ILD group(CTD-PAH+ILD,n=16)and CTD control group(n=34).Pulmonary function test parameters,including total lung capacity(TLC % predicted),forced vital capacity(FVC % predicted),forced expiratory volume in the first second(FEV_(1.0)% predicted),FE_(1.0)%/FVC and diffusing capacity of the lung for carbon monoxide(DLco,% predicted)were measured and compared among the four groups.Results One hundred and forteen eases were included and predominantly female with average onset age of 35～39 years old.CTDs that were predisposed to lung diseases were mixed connective disease(MCTD),systemic sclerosis(SSc),systemic lupus erythematosus(SLE)and primary Sj(o)ren syndrome(pSS),in order.There were 10,29 and 46 percent of patients presented with decreased TLC% in CTD-PAH,CTD-ILD and CTD-PAH+ILD group respectively,50,36 and 71 percent of patients with decreased FVC% respectively,54,47 and 71 percent of patients with decreased FEV_(1.0)% respectively,and 100,82 and 100 percent with decreased DLco% respectively.ANOVA analysis demonstrated that TLC%,FVC%,FEV_(1.0)%,DLco% had significant differences between CTD control group and each of the CTD associated lung disease group(P＜0.05),although none of them was lack of difference between the PAH and ILD groups.TLC% was significantly higher in CTD-PAH group than CTD-PAH+ILD group[(89±15)% vs(79±12)%,P＜0.05],while FVC% was significantly lower in CTDPAH+ILD group either than CTD-PAH group or than CTD-ILD group[(81±13)%,(80±16)% vs(65±22)%,P＜0.05].ConclusionPulmonary function test may be valuable in early screening for CTD associated lung disorders than distinguishing CTD-PAH from ILD,which usually reveal restrictive ventilation dysfunction and/or diffusing capacity dysfunction.

Background Lead exposure induces microglial cell death, of which the mechanism is unclear. Ferroptosis is a new death form and its role in microglia death has not been reported. Objective To investigate the role of ferroptosis in microglia following lead exposure in order to provide a theoretical basis for the mechanism of lead neurotoxicity. Methods Microglial cell line BV-2 cells were co-cultured with 0, 10, 20 and 40 μmol·L⁻¹ lead acetate for 24 h. The 40 μmol·L⁻¹ lead acetate group with iron chelator (DFO) was named the 40+DFO group. Changes in BV-2 cell morphology after lead exposure were observed under an inverted microscope; tissue iron kit and glutathione kit were used to detect intracellular iron and glutathione (GSH) respectively; flow cytometry was applied to detect lipid reactive oxygen species (lipid ROS) immunofluorescence intensity. Western blotting and qPCR were adopted to detect the expressions of glutathione peroxidase 4 (GPX4), solute carrier family 7 member 11 (SLC7A11), transferrin receptor 1 (TFR-1), divalent metal transporter 1 (DMT1), ferroportin 1 (FPN1) protein and mRNA. Results Compared with the control group, the number of BV-2 cells decreased with increasing doses of lead and the cells showed a large, round amoeboid shape. The intracellular levels of iron of BV-2 cells were (1.08±0.04), (1.29±0.03), and (1.72±0.10) mg·g⁻¹ (calculated by protein, thereafter) in the 10, 20, and 40 μmol·L⁻¹ lead acetate groups, respectively, significantly higher than that in the control group (P<0.05), and the intracellular level of iron in the 40+DFO group, (1.34±0.10) mg·g⁻¹, was lower than that in the 40 μmol·L⁻¹ lead acetate group, (1.72±0.03) mg·g⁻¹ (P<0.05). Compared with the control group, the TFR-1 and DMT1 protein and mRNA expressions were increased in BV-2 cells in the 10, 20, 40 μmol·L⁻¹ lead acetate groups (P<0.05), especially in the 40 μmol·L⁻¹ lead acetate group; the FPN1 protein expression did not change significantly, but the FPN1 mRNA expressions in BV-2 cells in the 10, 20, 40 μmol·L⁻¹ lead acetate groups were significantly decreased (P<0.05). Compared with the control group, the intracellular GSH level decreased and the lipid ROS content increased in all three lead acetate groups; compared with the 40 μmol·L⁻¹ lead acetate group, the GSH level increased by 12.30% and the lipid ROS content decreased by 13.00% in the 40+DFO group (P<0.05). The expressions of GPX4 protein were reduced to 50.00%, 35.00%, and 17.00% of that of the control group in the 10, 20, and 40 μmol·L⁻¹ lead acetate groups respectively, while the expressions of GPX4 mRNA were also significantly reduced; the expressions of SLC7A11 protein and mRNA in the 20 and 40 μmol·L⁻¹ lead acetate groups were lower than that in the control group, with the most significant decrease in the 40 μmol·L⁻¹ lead acetate group (P<0.05). Conclusion Lead exposure could induce ferroptosis in BV-2 cells, in which iron transport imbalance and oxidative damage might be involved.

Objective To observe the efficiency and safety of dexmedetomidine and tramadol to prevent postoperative shivering after liposuction. Methods A total of 80 patients undergoing liposuction were randomly divided into 4 groups with 20 cases in each group:dexmedetomidine 0.4 μg/kg(D1 group),dexmedetomidine 0.6 μg/kg(D2 group),tramadol 1 mg/kg(T group),and saline control group(N group).These patients received an intravenous injection of dexmedetomidine, tramadol, or saline at the time of surgical suture.The respiratory recovery time,awakening time, extubation time, orientation recovery time, the case of shivering and adverse reactions after surgery were recorded. Results The respiratory recovery time,awakening time, and extubation time in the group D2 were longer than those in the other 3 groups[respiratory recovery time:(5.5 ±1.3)min vs.(6.2 ±1.2)min vs.(5.1 ± 1.8)min vs.(5.0 ±0.9)min,F=3.330,P=0.024;awakening time:(10.2 ±1.3)min vs.(11.5 ±1.5)min vs.(9.7 ±2.7) min vs.(9.5 ±1.8)min,F=4.429,P=0.006;extubation time:(12.9 ±1.5)min vs.(14.2 ±1.6)min vs.(12.8 ±2.4)min vs.(12.7 ±1.9)min,F=2.845,P=0.043].Postoperative shivering incidence in the group N was higher than those in the other 3 groups(3 cases vs.2 cases vs.3 cases vs.9 cases,χ2=9.188,P=0.027).The incidence of nausea and vomiting in the group T was higher than those in the other 3 groups(2 cases vs.1 case vs.8 cases vs.4 cases,χ2=9.436,P=0.024).The incidence of tachycardia in the group D2 was higher than those in the other 3 groups(3 cases vs.7 cases vs.1 case vs.1 case,χ2=9.412, P=0.024). Conclusion Dexmedetomidine 0.4 μg/kg by intravenous injection can treat postoperative shivering after liposuction effectively and reduce the adverse reactions.

Objective To investigate the expressions and the significance among the three markers TGF β1,Survivin and Caspase-3 in intrahepatic bile duct tissues in patients with intrahepatic bile duct stones.Method Total of 130 paraffin section of intrahepatic bile duct tissue were collected at Department of Pathology,The 904th Hospital of Joint Logistic Support Force of PLA from 2013 to 2018.Total of 50 patients with intrahepatic bile duct stones complicated with bile duct strictures (the stenosis group),40 patients with intrahepatic bile duct stones with chronic inflammation (the inflammation group),and 40 patients with normal liver tissues (the normal control group) were included in this study.The expressions of TGF β1,Survivin and Caspase-3 in liver tissues were detected by immunohistochemistry and compared among the 3 groups to find their correlations with the clinicopathological features of the disease of the patients.Results TGF β1 was expressed in 72.0％ of the patients in the stenosis group,37.5％ in the inflammatory group,and 15.0％ in the normal control group.The differences among the groups were significant (P ＜ 0.05);Survivin was expressed in 78.0％ of the patients in the stenosis group,47.5％ in the inflammatory group,and 25.0％ in the normal control group.The differences among the groups were significant (P ＜ 0.05);Caspase-3 was expressed in 10.0％ of the patients in the stenosis group,42.5％ in the inflammatory group,and 75.0％ in the normal control group.The differences among the groups were significant (P ＜ 0.05).Within the stenosis group,TGF β1 was negatively correlated with Caspase-3 (r =-0.882,P ＜ 0.05),and positively correlated with Survivin (r =0.889,P ＜ 0.05).Survivin and Caspase-3 were also negatively correlated (r=-0.923,P＜0.05).Conclusion Abnormal expressions of TGF β1,Survivin and Caspase-3 were involved in the formation of intrahepatic bile duct stones associated with bile duct strictures.

Objective To investigate the use of crime scene investigation umbrellas to solve the problem that it is difficult to show the luminol test for bloodstains in strong light environment.Methods Three objects:red bricks,soil and black cloth were selected,samples with different concentrations of blood and different retention times were,prepared,luminol tests were performed on the same type of samples in a strong light environment,under the umbrella and in a dark room respectively,and photograghic evidence were obtained.Results It was found that bloodstains that could not be directly visualised by luminol test in the strong light environment could achieve better effects in the dark environment formed by the umbrella,and showed unsignificant difference from the results in the dark room.Conclusion Using the umbrella to create a relatively dark environment in strong daylight can easily and quickly perform the luminol test for bloodstains,providing an effective way to discover and extract blood stains in on-site investigations.

Objective To explore the relationship between the expression levels of microRNA-155(miR-155)and suppressor of cytokine signaling 1(SOCS1)in the colonic mucosal tissue of patients with ulcerative co-litis(UC)and the severity of the disease.Methods A total of 130 UC patients admitted to the Second Affiliated Hospital of Hebei North University from September 2021 to June 2023 were selected.According to the modified Mayo score system,the patients were assigned into an active stage group(n=85)and a remission stage group(n=45).According to the modified Truelove and Witts classification criteria,the UC patients at the active stage were as-signed into a mild group(n=35),a moderate group(n=30),and a severe group(n=20).A total of 90 healthy individuals who underwent colonoscopy for physical examination or those who had normal colonoscopy re-sults after single polypectomy and excluded other diseases were selected as the control group.The colonic mucosal tissues of UC patients with obvious lesions and the colonic mucosal tissue 20 cm away from the anus of the control group were collected.The levels of miR-155 and SOCS1 mRNA in tissues were determined by fluorescence quanti-tative PCR,and the expression of SOCS1 protein in tissues was determined by immunohistochemistry.The corre-lations of the levels of miR-155 and SOCS1 mRNA in the colonic mucosal tissue with the modified Mayo score of UC patients were analyzed.The values of the levels of miR-155 and SOCS1 mRNA in predicting the occurrence of severe illness in the UC patients at the active stage were evaluated.Results Compared with the control group and the remission stage group,the active stage group showed up-regulated expression level of miR-155,down-regula-ted level of SOCS1 mRNA,and decreased positive rate of SOCS1 protein in the colonic mucosal tissue(all P＜0.001).The expression level of miR-155 and modified Mayo score in colonic mucosal tissues of UC patients at the active stage increased,while the mRNA level of SOCS1 was down-regulated as the disease evolved from being mild to severe(all P＜0.001).The modified Mayo score was positively correlated with the miR-155 level and neg-ative correlated with the mRNA level of SOCS1 in colonic mucosal tissues of UC patients(all P＜0.001).The high miR-155 level(OR=2.762,95％CI=1.284-5.944,P=0.009),low mRNA level of SOCS1(OR=2.617,95％CI=1.302-5.258,P=0.007),and modified Mayo score≥ 12 points(OR=3.232,95％CI=1.450-7.204,P=0.004)were all risk factors for severe disease in the UC patients at the active stage.The ar-ea under curve of miR-155 combined with SOCS1 mRNA in predicting severe illness in the UC patients at the ac-tive stage was 0.920.Conclusions The expression levels of miR-155 and SOCS1 mRNA were correlated with the disease severity in the UC patients at the active stage.The combination of the two indicators demonstrates good performance in predicting the occurrence of severe illness in UC patients at the active stage.

Chemotherapy based on cisplatin or its combination therapy is a common cancer treatment method. However， the non-specific side effects of cisplatin， poor pharmacokinetic properties of small molecule drugs， and susceptibility to drug resistance greatly limit the clinical application of cisplatin as first-line anti-tumor drug. With the development of nanocarrier technology， liposomes have become an ideal carrier for delivering cisplatin drugs due to their excellent properties of targeting， reducing toxicity， and enhancing efficacy. This paper reviews the status of cisplatin liposome both domestically and internationally which have entered clinical trials， including L-NDDP，SPI-077®， Lipoplatin®，LiPlaCis，SLIT and ILC， etc. Currently， only Lipoplatin® and ILC are showing good potential in cancer therapy. Although cisplatin liposome has made some progress in reducing systemic toxicity and improving treatment efficiency in clinical research， there is still potential for further improvement in tumor targeting and reducing side effects. In the future， more low-toxicity and efficient cisplatin liposomes can be developed through formulation technologies such as co-delivery liposome， stimuli-responsive liposome and targeting liposome.

Professor , as the famous and veteran physician of TCM, has practiced TCM for more than 50 years, and had unique experience for the treatment of encephalopathy. Professor applied the theory of skin to guide the treatment of shoulder-hand syndrome after stroke. On the basis of the ancient acupuncture method of , combined with modern acupuncture method and new materials, with characteristics of shoulder-hand syndrome after stroke at different time points, he proposed to use floating needling and acupoint catgut embedding to treat patients with stageⅠ, and to use picking therapy and penetration needle to treat patients with stageⅡ, and to use fire needles, penetration needle and acupoint catgut embedding to treat patients with stageⅢ, combined with conventional acupuncture and rehabilitation treatment. As a result, the superior efficacy was achieved.