Objective To observe the effects of Tanshinone Ⅱ A sodium sulfonate (TSS ) on ischemia/reperfusion (I /R) induced cardiac injury in male (Sprague-Dawley,SD ) and explore its mechanisms.Methods Rats were subjected to a 30 min coronary arterial occlusion followed by 24 hours reperfusion.The survival rats were randomly (random number)divided into sham group (Sham group,n =10),ischemia reperfusion group (I /R group,n =10),low dose of TSS group (TSS-L group,n =10), medium dose of TSS group (TSS-Mgroup,n =9),high dose of TSS group (TSS-H group,n =9).A MAP heart function analysis system was used to measure hemodynamic variables,and TTC staining method was used to detect the myocardial infarct size.The levels of Bcl-2,Bax,Caspase-3,Lc3B/Lc3A,Beclin-1 and high mobility group box1 (HMGB1)were detected by western blot method.All data were analyzed by using One-way analysis of variance (ANOVA)(LSD-t test).Results Cardiac function in I /R group was lower than that in Sham group,and that was significantly improved by pretreated with TSS (P <0.05),but there were no significant differences in Pmin and DAP between Sham group and I /R group (P >0.05 ).The percentage of myocardial infarct size in TSS pretreatment group was significantly smaller than that in I /R group (P <0.05 ).Compared with Sham group,levels of Caspase-3 and Bax increased,and the Bcl-2 content was reduced obviously in I /R group (P <0.05).TSS pretreatment significantly down-regulated the levels of Caspase-3 and Bax protein (P <0.01).At the same time,the level of Bcl-2 was increased in all TSS pretreatment groups (P <0.01).Compared with Sham group,the ratio of Bcl-2 /Bax in I /R group was lower (P <0.05),and that was elevated in TSS groups (P <0.05 ).The change of autophagy related protein beclin-1 and Lc3B/Lc3A was in similar trend,and the levels of beclin-1 and Lc3B/Lc3A in I /R group were lower than that in Sham group (P <0.05),and those were raised in TSS pretreatment groups (P<0.05).The level of HMGB1 in I /R group was higher than that in Sham group (P <0.05),and compared with I /R group,the level of HMGB1 significantly decreased in TSS pretreatment groups (P <0.01 ). Conclusions The tanshinone ⅡA sodium sulfonate can protect the myocardium from ischemia/reperfusion injury and the mechanism may be attributed to the inhibition of cell apoptosis and activation of cell autophagy.

Objective To investigate the dynamic changes of mean platelet volume (MPV) and platelet distribution width (PDW),and to explore the role of MPV and PDW in the prognosis of patients with acute myocardial infarction (AMI).Methods This retrospective cohort study included 312 patients with AMI during 2012 to 2014 in The First Affiliated Hospital of Soochow University.Patients were divided into ST-elevation myocardial infarction (STEMI) group,non ST-elevation myocardial infarction group and low PDW group,high PDW group.Their clinical data and outcomes were analyzed.MPV and PDW were measured successively from admission to day-7 after AMI.The relationship between PDW,MPV and GRACE risk score was further investigated.Results In the STEMI group,the patients were younger (P =0.005),and with higher rates of hyperlipidemia and smoking (P ＜ 0.01).Patients in STEMI group had higher risk of death during hospitalization,compared to NSTEMI (P =0.014).In the high PDW group,the rates of congestion heart failure,cardiogenic shock and Killip ⅣV were higher (P ＜ 0.01;P =0.026;P ＜ 0.01).PDW was significantly associated with mortality of in-hospital,one-year mortality and the risk of re-infarction in one year (r =0.69,P ＜ 0.01;r =0.68,P ＜0.01;r =0.70,P ＜ 0.01).MPV was associated with one-year mortality (r =0.30,P =0.02).Conclusions PDW related to the severity of AMI could predict the risk of in-hospital mortality,one-year mortality and re-infarction.It was helpful to screen out the high-risk patients,so as to make more suitable treatment to improve the prognosis of patients.

Objective:By analyzing factors associated with lower urinary tract symptoms in middle-aged and elderly women aged 55-65 years old, a nomogram model for lower urinary tract symptoms was constructed to assist the clinical development of targeted interventions to reduce the incidence of lower urinary tract symptoms in this population.Methods:In the cross-sectional study, 798 middle-aged and elderly women aged 55-65 years receiving physical examination in the Health Management Center of Third Xiangya Hospital from November 2013 to December 2020 were selected as research participants.Univariate regression analysis was used to compare differences in the basic data related to lower urinary tract symptoms in the population.Multivariate Logistic regression analysis was used to identify related influencing factors, and a nomogram model for lower urinary tract symptoms in the population was established.Results:Among 798 middle-aged and elderly women surveyed, the prevalence of lower urinary tract symptoms was 81.08 %(647 cases), and the rate of urinary tract infections was 21.48 %(139 cases). Variables with statistical significance in univariate regression analysis were included in multivariate Logistic regression analysis.The results showed that body mass index, vaginal delivery, strength of pelvic floor type Ⅱ fiber muscle, pelvic and abdominal coordination and mental health were independent influencing factors for lower urinary tract symptoms in middle-aged and elderly women aged 55-65 years( OR=1.099, 2.681, 0.895, 0.658, 1.057, P=0.010, 0.030, 0.040, 0.010, 0.038). The monogram model based on the five risk prediction indexes produced a consistency index(C-index)of 0.651 and a diagnostic sensitivity and specificity of 66.9% and 58.9%, respectively.The correction curve showed that the predicted results of the model were essentially the same as the actual probability of condition. Conclusions:In this study, the independent influencing factors for lower urinary tract symptoms in middle-aged and elderly women aged 55-65 years were screened by univariate regression and multivariate Logistic regression analysis and a nomogram model for risk prediction of the population was constructed, was proved to have a good ability for accurately and effectively predicting the risk of lower urinary tract symptoms in middle-aged and elderly women aged 55-65 years, and will assist clinicians to screen for high-risk patients, formulate targeted interventions, and reduce the incidence of lower urinary tract symptoms in middle-aged and elderly women aged 55-65 years.

Objective To analyze the correlation between the multiple evaluation indicators in the early stage and the cure time(needed time from treatment to cure)of the patients with facial neuritis treated by ac-upuncture combined with medication,and to optimize the subjective and objective indicators enable predicting the cure time of facial neuritis in early stage.Methods All patients were treated by acupuncture and medica-tion combination.The research subjects were 64 patients with facial neuritis from the outpatient of cupuncture and moxibustion department of this hospital.The correlation between the grade of facial nerve paralysis,sur-face electromyography related data,scores of self-made symptom scoring scale,Sunnybrook Facial Grading System(SFGS)score,Facial Disability Index-Physical(FDIP)score,Facial Disability Index-Social(FDIS)score on 7 d of onset with the cure time was analyzed.Results The cure time was positively correlated with the grade of facial nerve paralysis and FDIS score on 7 d of onset(P＜0.01),amd negatively correlated with the scores of self-made symptom scoring scale,FDIP score,SFGS score and the affected side to healthy ratio of CMAP amplitude of buccal temporal branch of facial nerve(P＜0.01 or P＜0.05);the cure time had no sig-nificant correlation with the ratio of affected side and healthy side of CMAP amplitude in zygomatic branch of facial nerve,the ratio of affected side and healthy side of CMAP latent period of temporal branch,buccal branch and zygomatic branch of facial nerve and F wave output rate(P＞0.05).Conclusion In the early stage subjective indicators of the acupuncture combined with medication for treating facial neuritis,grade of facial nerve paralysis,self-made symptom scoring scale,scores of self-made symptom scoring scale,FDIP and FDIS scores and the ratio of affected side to healthy side of CMAP amplitude of the buccal branch,temporal branch of the facial nerve in sEMG in the objective indicators could be used to predict the cure time,better guide the treatment and have more effective and accurate comunication with the patients.

Dry powder inhalers (DPIs) offer distinct advantages as a means of pulmonary drug delivery and have attracted much attention in the field of pharmaceutical science. DPIs commonly contain micronized drug particles which, because of their cohesiveness and strong propensity to aggregate, have poor aerosolization performance. Thus carriers with a larger particle size are added to address this problem. However, the performance of DPIs is profoundly influenced by the physical properties of the carrier, particularly their particle size, morphology/shape and surface roughness. Because these factors are interdependent, it is difficult to completely understand how they individually influence DPI performance. The purpose of this review is to summarize and illuminate how these factors affect drug-carrier interaction and influence the performance of DPIs.

The poor mechanical property and vulnerability to bacterial infections are the main problems in clinic for dental restoration resins. Based on this problem, the purpose of this study is to synthesize silver-titanium dioxide (Ag-TiO₂) nanoparticles with good photocatalytic properties, and add them to the composite resin to improve the mechanical properties and photocatalytic antibacterial capability of the resin. The microstructure and chemical composition of Ag-TiO₂ nanoparticles and composite resins were characterized. The results indicated that Ag existed in both metallic and silver oxide state in the Ag-TiO₂, and Ag-TiO₂ nanoparticles were uniformly dispersed in the resins. The results of mechanical experiments suggested that the mechanical properties of the composite resin were significantly improved due to the incorporation of Ag-TiO₂ nanoparticles. The antibacterial results indicated that the Ag-TiO₂ nanoparticle-filled composite resins exhibited excellent antibacterial activities under 660 nm light irradiation for 10 min due to the photocatalysis, and the Ag-TiO₂ nanoparticle-filled composite resins could also exhibit excellent antibacterial activities after contact with bacteria for 24 h without light irradiation because of the release of Ag ions. In summary, this study provides a new antibacterial idea for the field of dental composite resins.
Anti-Bacterial Agents/pharmacology* ; Composite Resins ; Metal Nanoparticles/chemistry* ; Nanoparticles ; Titanium/pharmacology*

Dissolving microneedles carried drug molecules can effectively penetrate the stratum corneum of skin to improve the transdermal drug delivery. The traditional Chinese medicine acupuncture is based on the needle stimulation at a specific location (acupoint) to generate and transmit biochemical and physiological signals which alter the pathophysiological state of patients. However, the pain associated with conventional acupuncture needles and the requirement of highly trained professionals limit the development of acupuncture in non-Asian countries. The purpose of this study is to investigate whether the dissolving microneedles can be utilized as a self-administered painless replacement for acupuncture and locally released drug molecules can achieve expected therapeutic outcomes. Immunosuppressive rats were treated with acupuncture at Zusanli (ST36) acupoint using microneedles containing thymopentin. The immune functions and psychological mood of the immunosuppressed animals were examined. The proliferation of splenocytes was examined by CCK-8 assay. CD4 and CD8 expression patterns in spleen cells were detected by flow cytometry. The current study showed that use of either microneedles containing thymopentin or conventional acupuncture both resulted in immune cell proliferation, which was confirmed by flow cytometry. Furthermore, either conventional acupuncture or microneedles were able to effectively mitigate the anxiety caused by immune-suppression when applied on the ST36.

Animals ; Antibodies, Neutralizing ; Antibodies, Viral ; Foot-and-Mouth Disease Virus