Objective To establish a standardized supply model for ophthalmic surgical instruments using lean manage-ment methods,develop a formula for determining optimal instrument inventory levels,and improve the management efficiency of ophthalmic surgical instruments.Methods A total of 2,281 cataract instrument sets from January 2023 to December 2024 were analyzed.From January to December 2023(1 141 sets),conventional process management was implemented,while from January to December 2024(1 140 sets),a lean theory-based standardized model was applied.Key parameters including surgical time,sterilization workflow,and instrument management were recorded to establish the model.A quantitative analysis incorporating sur-gical time,turnover interval,transportation time,relaxation rate,cycle interval,and target instruments was conducted to derive the inventory formula.A two-month pilot study on cataract surgeries was performed to validate the model's feasibility.The inci-dence of special events before and after implementing the standardized model was compared.Results The formula-derived data aligned with clinical demands,demonstrating precise quantification of ophthalmic instrument sets and high process stability.The incidence of special events post-implementation was significantly lower than pre-implementation(P＜0.05).Conclusion The lean theory-based standardized supply model effectively enhances the management of ophthalmic surgical instruments.

Objective To observe the value of traditional pelvic floor ultrasound parameters combined with middle urethral sphincter elasticity parameters for diagnosing female stress urinary incontinence(SUI).Methods Fifty two female SUI patients(SUI group)and 45 healthy women(control group)were prospectively enrolled.Traditional pelvic floor ultrasound parameters and middle urethral sphincter elasticity parameters were compared between groups,and logistic regression analysis was performed,the efficacy of each parameter alone and their combination for diagnosing SUI was analyzed.Results Significant differences of bladder neck descent(BND),urethral rotation angle(URA),posterior urethrovesical angle(PUA),shear modulus of the middle urethral anterior wall sphincter at rest state(Q1),shear modulus of the middle urethral anterior wall sphincter under maximum Valsalva maneuver(Q2),and shear modulus of the middle urethral posterior wall sphincter at resting-state(H1)were found between groups(all P＜0.05).BND,PUA,Q1 and Q2 were all influencing factors of female SUI(all P＜0.05),with the area under the curve(AUC)for diagnosing SUI of 0.721,0.718,0.659 and 0.288,respectively.Then traditional ultrasound model,elasticity ultrasound model and combined model were constructed based on traditional pelvic floor ultrasound parameters(BND,PUA),middle urethral sphincter elasticity parameters(Q1,Q2)and their combination,respectively,with AUC for diagnosing SUI of 0.837,0.754 and 0.908,respectively.The AUC of combined model was higher than that of traditional ultrasound model,elasticity ultrasound model and each ultrasound parameter alone(all P＜0.05).Conclusion Traditional pelvic floor ultrasound parameters combined with middle urethral sphincter elasticity parameters had high value for diagnosing female SUI.

Objective To observe the value of middle urethral motion and sphincter elasticity for diagnosing female stress urinary incontinence(SUI).Methods Totally 97 female patients,including 52 with SUI(SUI group)and 45 without SUI(control group)were prospectively enrolled.Pelvic floor ultrasound was performed under resting state and the maximum Valsalva maneuver,respectively,and bladder neck mobility(BND),upper-lower mobility of middle urethra(UMupper-lower),anterior-posterior mobility of middle urethra(UM anterior-posterior),elasticity parameter of the anterior wall of middle urethral sphincter(ΔEanterior wall),as well as elasticity parameter of the posterior wall of middle urethral sphincter(ΔEposterior wall)were measured.Patients'general data and the above ultrasound parameters were compared between groups,and the efficacy of them for diagnosing SUI was analyzed.Results Significant differences of BND,UM upper-lower,ΔEanterior wall and ΔEposterior wall,of also the proportion of lateral episiotomy history were found between groups(all P＜0.05).Among them,UMupper-lower,ΔEanterior wall and ΔEposterior wall were all correlated with female SUI(rs=0.231,-0.533,-0.428,all P＜0.05).The area under the curve(AUC)of UMupper-lower,ΔEanterior wall,ΔEposterior wall and their combination for diagnosing SUI was 0.634,0.820,0.748 and 0.867,respectively.The AUC of the combination was significantly higher than that of each parameter alone(all P＜0.001).Conclusion The combination of middle urethral motion and sphincter elasticity was helpful for diagnosing female SUI.

Objective To clarify the potential risk factors of disinfection and supply room,and explore the application effect of strengthening quality control management,so as to improve the service quality of disinfection and supply room and reduce the risk of medical accidents.Methods From January 2022 to December 2023,800 medical devices processed in a disinfection supply room were selected as the study subjects.They were randomly divided into two groups of 400 each:a control group receiv-ing conventional management and an observation group receiving enhanced quality control management.Statistical analysis was conducted on potential risk factors,and the work quality of the two groups was compared.Results Univariate and multivariate logistic regression analyses revealed that potential risk factors included insufficient professional competence of staff,deficiencies in the management system,infrequent departmental training,and a noisy work environment(P＜0.05).The observation group showed significantly higher qualified rates in various indicators,such as biological monitoring,compared to the control group(P＜0.05).Furthermore,the observation group experienced significantly fewer risk events than the control group(P＜0.05),indicating a statistically significant difference.Conclusion The primary potential risk factors in disinfection supply rooms in-clude systemic issues,staff quality,work environment,and training frequency.Addressing these factors by strengthening quality control management can improve staff professional competence,basic quality,and work attitude,thereby enhancing management quality,reducing the likelihood of risk events,and ultimately improving management safety.

AIM:To explore the role and mechanism of calcium-sensing receptor(CaSR)in regulating macro-phage polarization in hypertensive rats.METHODS:Male spontaneously hypertensive rats(SHR)and Wistar-Kyoto(WKY)rats were categorized into WKY group,SHR group,SHR+R568(CaSR agonist)group,and SHR+NPS2143(CaSR inhibitor)group.The thoracic aorta was isolated,and the expression of CaSR and macrophage polarization markers in the aorta was observed through immunofluorescence staining.The primary peritoneal macrophages of SHR and WKY rats were aseptically extracted following anesthesia.After intervention with R568 and NPS2143,the expression levels of M1 and M2 markers of peritoneal macrophages were observed by Western blot and immunofluorescence staining.The levels of interleukin(IL)-1β and IL-10 were measured by ELISA.The concentration of Ca2+in peritoneal macrophages was mea-sured by immunofluorescence.Western blot was employed to identify the expression of CaSR and nucleotide-binding oligo-merization domain-like receptor protein 3(NLRP3)inflammasome components.Following anesthesia,vascular smooth muscle cells(VSMCs)were isolated from SHR using an adherent method.Subsequently,a co-culture system was estab-lished with macrophage supernatant.The optimal action time for this co-culture system was determined through CCK-8 as-say.RESULTS:Compared with SHR group,activation of CaSR resulted in a significant decrease in the protein expres-sion of M1 polarization markers(P<0.05)and a concomitant increase in the protein expression of M2 polarization markers in the aorta(P<0.05).Compared with SHR group,administration of R568 led to a significant decrease in the protein ex-pression of M1 polarization markers(P<0.05)and a concomitant increase in the protein expression of M2 polarization markers(P<0.05)in peritoneal macrophages.Additionally,there was a notable reduction in the protein levels of NLRP3 inflammasome components(P<0.05).Furthermore,the fluorescence intensity of intracellular Ca2+was significantly en-hanced following R568 treatment(P<0.05).After administration of MCC950,an NLRP3 inflammasome inhibitor,the re-sults were consistent with those observed following R568 treatment,demonstrating statistical significance(P<0.05).This effect was reversed by the combined intervention of U73122,a phospholipase C(PLC)inhibitor(P<0.05).Compared with the control(0 h),the 24-h peritoneal macrophage supernatant exhibited the strongest capacity to enhance the viabili-ty of VSMCs after 24 h of culture(P<0.05).CONCLUSION:In hypertensive rats,the CaSR inhibits NLRP3 inflamma-some activation via the PLC-Ca2+signaling pathway,thereby mediating an increase in macrophage polarization towards the M2 phenotype and a decrease towards the M1 phenotype.

Objective:To explore the effect of integrating open laboratories into Medical Microbiology experimental teaching for students majoring in Medical Laboratory Technology to enhance teaching quality.Methods:A total of 58 students from the grade 2020 majoring in Medical Laboratory Technology at a medical college were selected as the control group,receiving traditional teaching methods without open laboratory contents.A total of 58 students from the grade 2021 majoring in Medical Laboratory Technology were selected as the experimental group,integrating open laboratory contents into Medical Microbiology experimental teaching.The impact of open laboratories on teaching quality in Medical Microbiology experimental teaching was evaluated through analysis of final examination scores and questionnaire surveys.Results:Compared with the control group,the experimental group showed significant improvements in experimental report scores,experimental theory assessment scores,practical skill assessment scores,classroom performance scores,and overall scores(P＜0.01).The learning interest,multi-channel learning,mastery of key concepts,and ability to apply and expand knowledge of the experimental group also significantly improved(P＜0.01).The satisfaction rate of the experimental group in terms of participation level,acquired knowledge,mastered skills,and improved learning outcomes was all above 90%.Conclusion:Integrating open laboratory content into Medical Microbiology experimental teaching for students majoring in Medical Laboratory Technology can effectively stimulate students'engagement,enhance teaching quality,and help students better understand and master professional knowledge.

Objective To investigate the expression of the circular RNA circ-PHC3 in cervical cancer tissues and its regulatory mechanisms in the proliferation,migration,and invasion of cervical cancer cells.Methods The expression levels of circ-PHC3 in cervical cancer tissues and adjacent non-tumor tissues were analyzed using the GEO database.The correlation between circ-PHC3 expression and the clinical stage as well as prognosis of cervical cancer patients was also evaluated.The expression of circ-PHC3 in cervical cancer cell lines HCC94,C33A,HeLa,HCC1106,and SiHa was detected by real-time quantitative polymerase chain reaction(qRT-PCR).The cell line with the highest circ-PHC3 expression was selected for transfection with a circ-PHC3 inhibitor.The interaction between circ-PHC3 and miR-1179 was validated using a dual luciferase reporter gene assay.The expression levels of miR-1179 in transfected cells were further assessed by qRT-PCR.Functional assays,including colony formation,flow cytometry,wound healing,and Transwell assays,were conducted to evaluate cell proliferation,cell cycle progression,migration,and invasion,respectively.Western blot analysis was performed to determine the expression of key proteins associated with proliferation,migration,and invasion in circ-PHC3-modulated cells.Finally,in vivo experiments were carried out to investigate the impact of circ-PHC3 silencing on the growth and metastasis of cervical cancer cells in animal models.Results The expression level of circ-PHC3 in cervical cancer tissues was significantly higher than that in adjacent normal tissues(P<0.01).Furthermore,circ-PHC3 expression was significantly associated with the clinical stage of cervical cancer(P<0.01).Patients with high circ-PHC3 expression exhibited a notably lower survival rate compared to those with low circ-PHC3 expression(P<0.01).In cervical cancer cell lines including HCC94,C33A,HeLa,HCC1106,and SiHa,circ-PHC3 expression was markedly upregulated(all P<0.01),with the highest expression observed in HCC1106 cells(P<0.01).Circ-PHC3 was found to directly interact with miR-1179(P<0.01),and silencing circ-PHC3 significantly increased miR-1179 expression(P<0.01).Transfection of HCC1106 cells with a circ-PHC3 inhibitor significantly suppressed cell proliferation,migration,and invasion(all P<0.01),and induced cell cycle arrest(P<0.01);these effects were partially reversed by co-transfection with a miR-1179 inhibitor(all P<0.05).In HCC1106 cells with circ-PHC3 knockdown,the expression levels of key proteins associated with proliferation,migration,and invasion—Cyclin E,CDK2,MMP-9,and N-cadherin—were significantly reduced(all P<0.01),and this reduction was partially attenuated by miR-1179 inhibition(all P<0.01).In vivo experiments further demonstrated that circ-PHC3 knockdown significantly inhibited tumor growth and metastasis of HCC1106 cells(all P<0.01).Conclusions Circ-PHC3 is highly expressed in cervical cancer tissues,and its overexpression is significantly correlated with poor prognosis in patients with cervical cancer.Knockdown of circ-PHC3 upregulates the expression of miR-1179 and suppresses the proliferation,migration,and invasion of cervical cancer cells.

Objective:To establish a high performance liquid chromatography-evaporative light scattering detector(HPLC-ELSD)technique for simultaneous determining the content of excipients sucrose and mannitol in meningo-coccal polysaccharide vaccine.Methods:Using NanoChrom Sugar-10Ca analytical column(300 mm × 7.8 mm)and HPLC system(Agilent 1260).With purified water as the mobile phase,a flow rate of 0.5 mL·min-1,column temperature was 80 ℃,and the injection volume was 50 μL.The evaporative light detector was based on nitrogen.The carrier gas flow rate is 3.2 L·min-1,the temperature of drift tube was 1 10 ℃,the gain value was 1,and the impactor was"mode 1".This assay was subsequently validated for its system suitability,specificity,repeatability,intermediate precision and linearity,and accuracy.The established method was used to assay the contents of the sucrose and mannitol in four batches of meningococcal polysaccharide vaccine.Results:The estab-lished HPLC-ELSD method showed good systemic suitability.Specificity validation showed that there was no inter-ference peak in the blank solvent;the separation of the target peaks between sucrose and mannitol was＞2.0.The relative standard deviations(RSD)value of peak area of sucrose and mannitol in six tests were 0.44％and 0.38％,respectively.RSD of intermediate precision of both sucrose and mannitol were lower than 2.00％,indica-ting that the precision of high performance liquid chromatography instrument was well.The linear range of two excipients were 12.5-150.0 μg·mL-1(R2＞0.99,respectively).The recovery rate of sucrose and mannitol were 95.74％-99.33％,94.37％-98.85％,respectively.There was no significant difference in the contents of sucrose and mannitol in 4 batches of meningococcal polysaccharide vaccine.Conclusion:The HPLC-ELSD method showed good specificity,precision,linearity and accuracy,and the test results were stable and reliable,so that it is suitable for simultaneous determination of sucrose and mannitol contents of meningococcal polysaccharide injections.

Objective To establish a standardized supply model for ophthalmic surgical instruments using lean manage-ment methods,develop a formula for determining optimal instrument inventory levels,and improve the management efficiency of ophthalmic surgical instruments.Methods A total of 2,281 cataract instrument sets from January 2023 to December 2024 were analyzed.From January to December 2023(1 141 sets),conventional process management was implemented,while from January to December 2024(1 140 sets),a lean theory-based standardized model was applied.Key parameters including surgical time,sterilization workflow,and instrument management were recorded to establish the model.A quantitative analysis incorporating sur-gical time,turnover interval,transportation time,relaxation rate,cycle interval,and target instruments was conducted to derive the inventory formula.A two-month pilot study on cataract surgeries was performed to validate the model's feasibility.The inci-dence of special events before and after implementing the standardized model was compared.Results The formula-derived data aligned with clinical demands,demonstrating precise quantification of ophthalmic instrument sets and high process stability.The incidence of special events post-implementation was significantly lower than pre-implementation(P＜0.05).Conclusion The lean theory-based standardized supply model effectively enhances the management of ophthalmic surgical instruments.

Objective To observe the value of traditional pelvic floor ultrasound parameters combined with middle urethral sphincter elasticity parameters for diagnosing female stress urinary incontinence(SUI).Methods Fifty two female SUI patients(SUI group)and 45 healthy women(control group)were prospectively enrolled.Traditional pelvic floor ultrasound parameters and middle urethral sphincter elasticity parameters were compared between groups,and logistic regression analysis was performed,the efficacy of each parameter alone and their combination for diagnosing SUI was analyzed.Results Significant differences of bladder neck descent(BND),urethral rotation angle(URA),posterior urethrovesical angle(PUA),shear modulus of the middle urethral anterior wall sphincter at rest state(Q1),shear modulus of the middle urethral anterior wall sphincter under maximum Valsalva maneuver(Q2),and shear modulus of the middle urethral posterior wall sphincter at resting-state(H1)were found between groups(all P＜0.05).BND,PUA,Q1 and Q2 were all influencing factors of female SUI(all P＜0.05),with the area under the curve(AUC)for diagnosing SUI of 0.721,0.718,0.659 and 0.288,respectively.Then traditional ultrasound model,elasticity ultrasound model and combined model were constructed based on traditional pelvic floor ultrasound parameters(BND,PUA),middle urethral sphincter elasticity parameters(Q1,Q2)and their combination,respectively,with AUC for diagnosing SUI of 0.837,0.754 and 0.908,respectively.The AUC of combined model was higher than that of traditional ultrasound model,elasticity ultrasound model and each ultrasound parameter alone(all P＜0.05).Conclusion Traditional pelvic floor ultrasound parameters combined with middle urethral sphincter elasticity parameters had high value for diagnosing female SUI.