Magnesium and its alloys have been widely studied in the field of orthopaedics for their desirable mechanical properties, biodegradability and biocompatibility. However, the rapid degradation rate of magnesium and its alloys cannot match the healing process of bone itself, and may adversely affect the adhesion, growth and differentiation of surrounding cells, resulting in early loosening of implants, thus limiting their wide clinical application. Surface coating modification is a feasible and promising anti-corrosion solution to solve the problem of uncontrollable corrosion rate of magnesium implants. The surface coating modification technology can optimize the integration of the bone-implant interface by improving the bone induction ability of the implant surface (such as the bio-mimetic coating based on phosphate ceramics) or improving the corrosion resistance (such as the micro-arc oxidation coating with wear resistance and corrosion resistance, and the phytic acid coating with self-healing potential). While optimizing the degradation rate of magnesium implant, it can also realize multiple functions such as promoting osseointegration, drug delivery and photothermal therapy through composite component modification. In this paper, the advantages and disadvantages of different coating modification method on the surface of orthopaedic magnesium implants are comprehensively illustrated, and the key technologies in each preparation process are summarized and the composite modification methods are further discussed, so as to provide references for the preparation of multifunctional magnesium implants that meet the requirements of orthopaedic applications.

Objective:To investigate the prognosis and the factors that influence it in patients with non-gastric gastrointestinal stromal tumors (GISTs) who are at low risk of recurrence.Methods:This was a retrospective cohort study. Clinicopathologic and prognostic data from patients with non-gastric GISTs and at low risk of recurrence (i.e., very low-risk or low-risk according to the 2008 version of the Modified NIH Risk Classification), who attended 18 medical centers in China between January 2000 and June 2023, were collected. We excluded patients with a history of prior malignancy, concurrent primary malignancy, multiple GISTs, and those who had received preoperative imatinib. The study cohort comprised 1,571 patients with GISTs, 370 (23.6%) of whom were at very low-risk and 1,201 (76.4%) at low-risk of recurrence. The cohort included 799 (50.9%) men and 772 (49.1%) women of median age 57 (16–93) years. Patients were followed up to July 2024. The prognosis and its influencing factors were analyzed. Receiver operating characteristic curves for tumor diameter and Ki67 were established, and the sensitivity, specificity, area under the curve (AUC) and optimal cut-off value with 95% confidence intervals were calculated. Propensity score matching was implemented using the 1:1 nearest neighbor matching method with a matching tolerance of 0.02.Results:With a median follow-up of 63 (12–267) months, the 5- and 10-year overall survival (OS) rates of the 1,571 patients were 99.5% and 98.0%, respectively, and the 5- and 10-year disease-free survival (DFS) rates were 96.3% and 94.4%, respectively. During postoperative follow-up, 3.8% (60/1,571) patients had disease recurrence or metastasis, comprising 0.8% (3/370) in the very low-risk group and 4.7% (57/1,201) in the low-risk group. In the low-risk group, recurrence or metastasis occurred in 5.5% (25/457) of patients with duodenal GISTs, 3.9% (25/645) of those with small intestinal GISTs, 9.2% (6/65) of those with rectal GISTs, and 10.0% (1/10) of those with colonic GISTs. Among the 60 patients with metastases, 56.7% (34/60) of the metastases were located in the abdominal cavity, 53.3% (32/60) in the liver, and 3.3% (2/60) in bone. During the follow-up period, 13 patients (0.8%) died of disease. Receiver operating characteristic curves were plotted for tumor diameter and Ki67 and assessed using the Jordon index. This showed that the difference in DFS between the two groups was statistically significant when the cutoff value for tumor diameter was 3.5 cm (AUC 0.731, 95% CI: 0.670–0.793, sensitivity 77.7%, specificity 64.1%). Furthermore, the difference in DFS between the two groups was statistically significant when the cutoff value for Ki67 was 5% (AUC 0.693, 95% CI: 0.624–0.762, sensitivity 60.7%, specificity 65.3%). Multifactorial analysis revealed that tumor diameter ≥3.5 cm, Ki67 ≥5%, and R1 resection were independent risk factors for DFS in patients with non-gastric GISTs at low risk of recurrence (all P<0.05). Furthermore, age >57 years, Ki67 ≥5%, and R1 resection were also independent risk factors for OS in patients with non-gastric GISTs at low risk of recurrence (all P<0.05). We also grouped the patients according to whether they had received postoperative adjuvant treatment with imatinib for 1 or 3 years. This yielded 137 patients in the less than 1-year group, 139 in the 1-year plus group; and 44 in both the less than 3 years and 3-years plus group. After propensity score matching for age, tumor diameter, Ki67, and resection status, the differences in survival between the two groups were not statistically significant (all P>0.05). The 10-year DFS and OS were 87.5% and 95.5%, respectively, in the group treated with imatinib for less than 1 year and 88.5% and 97.8%, respectively, in the group treated for more than 1 year. The 10-year DFS and OS were 89.6% and 92.6%, respectively, in the group treated with imatinib for less than 3 years and 88.0% and 100.0%, respectively, in the group treated with imatinib for more than 3 years. Conclusion:The overall prognosis of primary, non-gastric, low recurrence risk GISTs is relatively favorable; however, recurrences and metastases do occur. Age, tumor diameter, Ki67, and R1 resection may affect the prognosis. For some patients with low risk GISTs, administration of adjuvant therapy with imatinib for an appropriate duration may help prevent recurrence and improve survival.

AIM: To investigate the protective effect and mechanism of Danlou tablet on retinal ischemia-reperfusion injury(RIRI)in mice.METHODS: A total of 40 ApoE-/- mice were fed with high fat diet for 6 wk, and the RIRI model was established by anterior chamber infusion of pressurized saline. The mice were divided into control group(normal saline for 8 wk), RIRI model group(normal saline for 8 wk), and low-, medium-, and high-dose Danlou tablets groups [1, 2, and 4 g/(kg·d), respectively, for 8 wk]. The morphological changes of retina were observed by hematoxylin-eosin(HE)staining, retinal cell apoptosis was detected by terminal-deoxynucleoitidyl transferase mediated Nick-End Labeling(TUNEL)staining. The Western-blot assay was used to detect the expression of retinal tissue sample Kelch-like ech-associated protein 1(Keap1), nuclear factor E2 related factor 2(Nrf2), heme oxygenase 1(HO-1), and superoxide dismutase(Sod2)proteins.RESULTS: Compared with the control group, the mouse retina was atrophic with thinning thickness and increasing cell apoptosis, down-regulation of Sod2 protein expression, and up-regulation of Keap1 protein expression in the RIRI model group(all P<0.01). Compared with the RIRI model group, the retinal thickness increased in the medium- and high-dose of Danlou tablets groups(all P<0.01), and the cell apoptosis of retina decreased in the low-, medium- and high-dose of Danlou tablets groups(all P<0.05). There were no significant differences in the expression of Keap1 and HO-1 proteins of mouse retina tissue in the low-dose of Danlou tablets group(P>0.05). The expression of Sod2, Nrf2 and HO-1 proteins up regulated, and the expression of Keap1 protein down regulated in the medium- and high-dose of Danlou tablets groups(all P<0.05).CONCLUSION: Danlou tablet can alleviate RIRI-induced atrophy and thinning of retina and retinal cell apoptosis by regulating Keap1-Nrf2/HO-1 signal pathway and reducing oxidative stress.

Objective Air pollution is a leading public health issue.This study investigated the effect of air quality and pollutants on pulmonary function and inflammation in patients with asthma in Shanghai. Methods The study monitored 27 asthma outpatients for a year,collecting data on weather,patient self-management[daily asthma diary,peak expiratory flow(PEF)monitoring,medication usage],spirometry and serum markers.To explore the potential mechanisms of any effects,asthmatic mice induced by ovalbumin(OVA)were exposed to PM2.5. Results Statistical and correlational analyses revealed that air pollutants have both acute and chronic effects on asthma.Acute exposure showed a correlation between PEF and levels of ozone(O3)and nitrogen dioxide(NO2).Chronic exposure indicated that interleukin-5(IL-5)and interleukin-13(IL-13)levels correlated with PM2.5 and PM10 concentrations.In asthmatic mouse models,exposure to PM2.5 increased cytokine levels and worsened lung function.Additionally,PM2.5 exposure inhibited cell proliferation by blocking the NF-κB and ERK phosphorylation pathways. Conclusion Ambient air pollutants exacerbate asthma by worsening lung function and enhancing Th2-mediated inflammation.Specifically,PM2.5 significantly contributes to these adverse effects.Further research is needed to elucidate the mechanisms by which PM2.5 impacts asthma.

Objective lo contrast the diagnostic efficacies of perineal and transrectal approaches for combined prostate biopsies guided via magnetic resonance imaging(MRI)and ultrasound fusion imaging.Method A retrospective analysis of clinical data from 271 patients subjected to combined prostate biopsies guided by MRI and ultrasound fusion imaging at the first people's hospital of Wuxue city and Wuhan Tongji Hospital from January 2022 to November 2023 was conducted.They were divided into two groups according to the puncture path,132 cases were transrectal and 139 cases were perineal.The differences between the detection rates of prostate cancer(PCa)and clinical significant prostate cancer(csPCa)across different prostate imaging reporting and data system(PI-RADS)scores and lesion localizations within the two puncture paths were compared.Results The detection rates of PCa in the perineal and transrectal puncture groups(68.3％vs.59.8％,P=0.145)and csPCa(64.7％vs.55.3％,P=0.112)did not exhibit statistically significant differences.However,the perineal puncture group experienced fewer complications.For patients with a PI-RADS score of 4,both PCa(77.2％vs.56.1％,P=0.027)and csPCa(71.9％vs.48.8％,P=0.02)detection rates were higher via the perineal combined biopsy),compared to the transrectal path.Additionally,for apical(PCa:84.3％vs.48.7％,P=0.001;csPCa:81.8％vs.48.7％,P=0.004)and anterior(PCa:77.1％vs.46.5％,P=0.006;csPCa:68.6％vs.44.2％,P=0.031)prostate lesions,the detection rates via the perineal combined biopsy were considerably higher than those of the transrectal path.Conclusion For patients carrying a PI-RADS score of 4 or with prostate lesions situated at the apical or anterior section,the perineal approach for biopsy sampling emerges as the most appropriate method.

Objective To investigate the safety and efficacy of ciprofol combined with oxycodone in elderly patients who underwent endoscopic gastric mucosal dissection.Methods A total of 204 elderly patients in the outpatient department of the Northern Theater General Hospital who were to undergo endoscopic gastric mucosal dissection from March 2022 to December 2022 were selected as study participants.They were aged 60-75 years,with a body mass index of 18-30 kg/m2,and ASA grade Ⅱ or Ⅲ,regardless of sex.They were randomly divided into propofol(group P),ciprofol(group C),and ciprofol+oxycodone(group CO)groups,with 68 patients in each group.During anesthesia induction,group P was given propofol(1-1.5 mg/kg);group C,ciprofol(0.2-0.5 mg/kg);and group CO,oxyco-done hydrochloride(0.1-0.2 mg/kg)and ciprofol(0.2-0.5 mg/kg).The injection time of the three groups was>30 s.During anesthesia maintenance,ciprofol[1-1.5 mg/(kg·h)]was continuously injected intravenously in groups C and CO,and propofol[2-5 mg/(kg·h)]was continuously injected intravenously in group P.The modified observer's assessment of alertness/sedation score was evaluated at 3 min after anesthesia induction.If the score was≤1,endoscopy was started.The mean arterial pressure(MAP),heart rate(HR),and blood oxygen saturation(SpO2)at times T0(before drug injection),T1(when eyelash reflex disappeared),T2(when endoscopy began),and T3(when endoscope was withdrawn);visual analogue scale(VAS)scores at 30 min and 1 h after resuscitation;and induction time,recovery time,intravenous pain,respiratory depression,and other adverse reactions were recorded in the three groups.Results There were no significant differences in MAP,HR,and SpO2 at T0 and T3 among the three groups(all P>0.05).At T1 and T2,compared with those in group P,MAP,HR,and SpO2 in groups C and CO were significantly increased(all P<0.05).MAP,HR,and SpO2 in the CO group were slightly lower than those in the C group;however,the differences were not statistically significant(all P>0.05).Compared with that in group P,the incidence of respiratory depression and injection pain in groups C and CO was significantly reduced(P<0.05),but there was no statistically significant difference between groups C and CO(P>0.05).The VAS score at 30 min and 1 h after awakening and inci-dence of body movement in the CO group were lower than those in the P and C groups(all P<0.05);however,there was no statistically significant difference between the P and C groups(all P>0.05).Conclusion Ciprofol combined with oxycodone had definite sedative and analgesic effects in elderly patients undergoing endoscopic gastric mucosal dissection.Compared with the use of propofol or ciprofol alone,with combination therapy,the respiratory cycle is more stable,patients have fewer adverse reactions,and it is worthy of clinical application.

The incidence of osteoporotic thoracolumbar vertebral fracture (OTLVF) in the elderly is gradually increasing. The kyphotic deformity caused by various factors has become an important characteristic of OTLVF and has received increasing attention. Its clinical manifestations include pain, delayed nerve damage, sagittal imbalance, etc. Currently, the definition and diagnosis of OTLVF with kyphotic deformity in the elderly are still unclear. Although there are many treatment options, they are controversial. Existing guidelines or consensuses pay little attention to this type of fracture with kyphotic deformity. To this end, the Lumbar Education Working Group of the Spine Branch of the Chinese Medicine Education Association and Editorial Committee of Chinese Journal of Trauma organized the experts in the relevant fields to jointly develop Clinical guidelines for the diagnosis and treatment of osteoporotic thoracolumbar vertebral fractures with kyphotic deformity in the elderly ( version 2024), based on evidence-based medical advancements and the principles of scientificity, practicality, and advanced nature, which provided 18 recommendations to standardize the clinical diagnosis and treatment.

Objective To evaluate the efficacy,safety and economy of centrally procured ceftazidime injection for treating pulmonary infections,and to provide a reference for clinical therapeutic decisions.Methods Based on the active monitoring and drug evaluation functions of the China Hospital Pharmacovigilance System(CHPS),a retrospective analysis was conducted.Electronic medical records of 203 patients treated with ceftazidime injection for pulmonary injections in our hospital from February 2021 to August 2022 were collected.Patients were divided into two groups based on the type of ceftazidime used,the centrally procured ceftazidime group(102 cases)and the non-centrally procured ceftazidime group(101 cases).Efficacy was evaluated by the effectiveness rate,safety by the incidence of adverse reactions,and economy by cost-effectiveness analysis.Differences between the two groups were compared.Results Treatment efficiency was 90.20%in the centrally procured group and 91.09%in the non-centrally procured group,with no statistically significant difference(P>0.05).The incidence of adverse reactions was 10.78%in the centrally procured group and 5.94%in the non-centrally procured group,with no statistically significant difference(P>0.05).The average cost-effectiveness ratio(C/E)was 1.56±0.86 in the centrally procured group and 18.96±9.38 in the non-centrally procured group,indicating a smaller C/E value for the centrally procured group.Sensitivity analysis results were consistent with the cost-effectiveness analysis results.Conclusion Centrally procured ceftazidime injection has equivalent efficacy and safety compared to non-centrally procured ceftazidime,with improved economic value.Therefore,the centrally procured variant should be given priority when using ceftazidime for the treatment of pulmonary infections.

As a new clinical trial mode,decentralized & digitalized clinical trial(DCT)is based on digital health equipment and uses internet and artificial intelligence technologies to complete the screening,registration,randomization,intervention,evaluation and follow-up of subjects,which is helpful to improve efficiency and reduce trial costs.The DCT mode has been applied to evaluate the treatment and management effects of cardiovascular diseases such as atrial fibrilla-tion,heart failure,coronary heart disease,and hypertension,showing broad development prospects and application space.This article will provide a brief introduction to representative DCT in the global cardiovascular disease field,and look for-ward to the application prospects of this model,providing reference and guidance for accelerating the development of cardio-vascular DCT in China.

Objective To investigate the diagnostic efficacy of the nomogram model based on Chinese thyroid ima-ging reporting and data system(C-TIRADS)combined with shear wave elastography(SWE)and clinically inde-pendent risk factors for category IV thyroid nodules.Methods 2D-ultrasound images and SWE images of 256 pa-tients(269 nodules)with category IV thyroid nodules were analyzed.The sensitivity,specificity,and accuracy of the diagnosis by C-TIRADS and SWE were calculated using pathological findings as the gold standard.Receiver op-erating characteristic(ROC)curves were plotted,and the area under the curve(AUC)was obtained.Independent risk factors for thyroid nodules were screened by univariate and multifactorial logistic regression analyses,a risk model was developed and a nomogram model was plotted,and a calibration curve analysis was used to assess the accuracy of prediction.ROC of the nomogram model was plotted,and the diagnostic efficacy of C-TIRADS,SWE and nomogram model based on independent risk factors was compared according to the AUC in category IV thyroid nodules.Results The sensitivity,specificity,and accuracy of C-TIRADS for differentiating malignant and benign nodules was 0.921,0.724 and 0.844 respectively,the AUC was equal to 0.822 with a 95%confidence interval(95%CI)of 0.775-0.870.The sensitivity,specificity and accuracy of SWE were 0.701,0.981,0.814 respec-tively,and the AUC was 0.833(95%CI:0.795-0.872).Multifactorial logistic regression analysis suggested that C-TIRADS classification,mean value of elasticity(E-mean)age and aspect ratio were independent risk factors for identifying benign and malignant thyroid nodules.The sensitivity,specificity and accuracy of the nomogram model established based on the above four factors were 0.957,0.943 and 0.959,the AUC was 0.963(95%CI:0.943-0.984),which showed a diagnostic efficacy superior to that of C-TIRADS or SWE alone.Conclusion The nomogram model,constructed based on C-TIRADS,SWE and clinically independent risk factors,can improve the efficacy in diagnosing category IV thyroid nodules,with a better clinical application value.