Objective:To investigate the regulatory effect of follistatin-like 1 protein (FSTL1) on the differentiation of mesenchymal stem cells (MSCs) into myofibroblasts in renal tissue and on renal fibrosis induced by renal ischemia-reperfusion injury (IRI).Method:In animal experiments, a unilateral renal IRI-induced fibrosis model was established by clamping the left renal pedicle (IRI 7 d group, n=3), with a sham-operated group as control (Sham 7 d group, n=3). Twelve male C57BL/6 mice were randomly assigned to sham operation (Sham group, n=4), model (IRI group, n=4) and FSTL1 treatment (IRI+FSTL1 group, n=4) groups. The Sham group underwent laparotomy sham surgery, while the IRI group and IRI+FSTL1 group underwent unilateral renal IRI surgery. From 1 day before surgery to 7 days after surgery, mice received daily intraperitoneal injections of phosphate buffered saline (Sham group and IRI group) or recombinant FSTL1 protein (IRI+FSTL1 group). The mice were sacrificed 14 days after surgery. Renal histopathological damage was evaluated by hematoxylin-eosin (HE) staining. Collagen fiber deposition and fibronectin (FN) accumulation in renal interstitium were assessed by Sirius red staining, Masson’s trichrome staining and immunohistochemical staining. The co-expression level of stem cell antigen-1 (SCA-1) and α-smooth muscle actin (α-SMA) was detected by double immunofluorescence staining. The mRNA expression levels of fibrosis-related genes ( Col1a1, Col3a1, Fn1) and myofibroblast marker gene ( Acta2) were detected by real time quantitative polymerase chain reaction (RT-qPCR). In cell experiments, a differentiation model of mouse MSCs into myofibroblasts was established through TGF-β1 induction (MSC+TGF-β1 group, n=3), with a blank control group (MSC group, n=3) set up for comparison. Bone marrow MSCs from C57BL/6 mice were randomly divided into 4 groups: the TGF-β1 induction group (MSC+TGF-β1, n=6), the FSTL1 treatment group (MSC+TGF-β1+FSTL1, n=6), the negative control siRNA transfection group (MSC-siNC+TGF-β1, n=6), and the Fstl1-targeted siRNA transfection group (MSC-si Fstl1+TGF-β1, n=6). The mRNA and protein expression levels of Col1a1, Col3a1, Fn1 and Acta2 were detected by RT-qPCR and Western blot respectively. The concentration of FSTL1 protein in cell culture supernatant was measured by enzyme-linked immunosorbent assay. Result:The expression of Col1a1 and Acta2 mRNA in the kidney tissue of IRI 7 d group mice was higher than that of the Sham 7 d group (both P<0.05), successfully establishing a mouse model of renal fibrosis. The mRNA expression of Fstl1 in kidney tissues of the IRI 7 d group mice was upregulated ( P<0.01). Immunofluorescence double staining revealed increased co-expression of SCA-1/α-SMA and SCA-1/FSTL1 in the renal interstitium. At 14 days after surgery, HE staining results showed reduced pathological damage in kidney tissues of the IRI+FSTL1 group compared to the IRI group, and Sirius Red and Masson staining revealed decreased collagen fiber deposition in the renal interstitium, while immunohistochemical staining demonstrated reduced FN accumulation in the renal interstitium (all P<0.05). The mRNA expression levels of Col1a1, Col3a1, Fn1 and Acta2 in renal tissue of IRI+FSTL1 group were lower than IRI group (all P<0.05). Double immunofluorescence staining showed a decrease in the co-expression of SCA-1 and α-SMA in renal interstitium. In cell experiments, the mRNA expression levels of Col1a1, Col3a1, Fn1, and Acta2 in the MSC+TGF-β1 group were higher than those in the MSC group (all P<0.05), confirming successful TGF-β1-induced myofibroblast differentiation of MSCs. Additionally, both intracellular FSTL1 protein expression and FSTL1 protein concentration in the cell supernatant were elevated in the MSC+TGF-β1 group (both P<0.05). Compared with MSC+TGF-β1 group, the mRNA levels of Acta2 and Col1a1 in MSC+TGF-β1+FSTL1 group were decreased (both P<0.01), and the protein expression levels of collagen Ⅰ and α-SMA were significantly decreased (both P<0.001). Compared with MSC-siNC+TGF-β1 group, the protein level of FSTL1 in cell culture supernatant of MSC-si Fstl1+TGF-β1 group were decreased ( P<0.001), while the protein expression levels of FN and α-SMA were increased (both P<0.001), and the mRNA expression levels of Fn1 and Acta2 were increased (both P<0.05). Conclusions:During unilateral renal IRI-induced renal fibrosis, MSCs in renal interstitium may differentiate into myofibroblasts. FSTL1 may alleviate renal fibrosis after unilateral renal IRI by inhibiting the differentiation of MSCs into myofibroblasts.

With the rapid development of competitive sports, the incidence of anterior cruciate ligament (ACL) injury is on the rise. Such injuries may shorten athletes′ career and lead to other long-term adverse consequences. Although athletes generally recover well after ACL reconstruction, many still struggle to return to their pre-injury performance levels. Advances in the understanding of ACL anatomy and injury mechanisms, along with the evolution of surgical techniques and rehabilitation methods, have provided more individualized and tailored options for athletes following ACL injuries. However, there is currently no consensus in China regarding surgical and rehabilitation strategies for competitive athletes aiming to return to sports after ACL injuries. To this end, the Sports Medicine Committee of the Chinese Research Hospital Association and the Editorial Board of the Chinese Journal of Trauma jointly formulated the Expert consensus on surgical treatment and rehabilitation for competitive sports athletes returning to sports after anterior cruciate ligament injury ( version 2025), and presented 14 recommendations covering surgical indications, preoperative rehabilitation, surgical timing, surgical strategies and postoperative rehabilitation strategies, aiming to improve the surgical treatment and rehabilitation system for ACL injuries in competitive athletes and facilitate their return to high-level sports performance after injury.

Acute lateral ankle sprain (ALAS) is one of the most common sport injuries, with high incidence, recurrence and disability rates. Currently, exercise rehabilitation-based non-surgical treatment is the primary management approach for ALAS. However, there remain improper practices such as excessive immobilization or uncontrolled activity, which contribute to recurrent sprains and chronic ankle instability, significantly impairing patients′ athletic function and quality of life. To standardize the non-surgical management of ALAS, improve the cure rates, and reduce the recurrence and disability rates, Chinese Sports Rehabilitation Medicine Training Project of Chinese Medical Association, Foot and Ankle Basics and Orthopedics Group, Orthopedic Branch of Chinese Medical Doctor Association, and Sports Medicine Branch of Jiangsu Medical Association organized relevant experts to formulate Expert consensus on non-surgical treatment for acute lateral ankle sprain ( version 2025), following the principles of scientific vigor, practicality, and innovation. Thirteen recommendations were proposed for standardized treatment protocols across different healing phases, aiming to provide references for standard management of ALAS and improve the therapeutic outcomes.

Objective:To assess the effects of various leisure hobbies on the ability of daily living(ADL)and the quality of life among older adults in China.Methods:A cross-sectional study was conducted using data from the 4th Chinese Urban and Rural Elderly Living Conditions Sample Survey.We categorized community recreation hobbies into two types: dynamic hobbies, which include walking, playing ball games, dancing, and other physical activities, and static hobbies, which encompass activities that do not require physical exertion, such as reading, watching TV, and drawing.The EuroQol five-dimension scale(EQ-5D)-3L was employed to evaluate the quality of life.Older adults who maintained either dynamic or static hobbies for three consecutive years from 2017 to 2019 were initially screened.The relationship between different types of leisure hobbies and ADL scores, as well as quality of life at various time points, was analyzed using repeated-measures ANOVA.Subsequently, propensity scores were matched based on gender, age, ethnicity, marital status, literacy, and chronic diseases, and five machine learning algorithms were utilized to identify the optimal model for predicting fully independent ADL and EQ-5D effect values.Based on the optimal predictive model, we conducted Shapley Additive Explanations(SHAP)and global analysis.Results:The total number of older adults who participated in the survey over the three consecutive years from 2017 to 2019 was 4 912.Among these, 2 594 individuals maintained the same hobby habits throughout this period, comprising 1 362 males and 1 232 females, with an average age of(70.81±6.71)years.Statistically significant differences in ADL scores and EQ-5D scores were observed between the dynamic and static leisure hobby groups(all P<0.05)across various time points, hobby group classifications, and interaction levels.Older adults engaged in dynamic hobbies exhibited superior ADL functioning and higher EQ-5D scores in comparison to those in the static hobby group, with these differences remaining statistically significant following propensity score matching(all P<0.05).In predicting full ADL independence, the SHAP value for dynamic hobbies ranked second, while for predicting an EQ-5D weighted value of 1, the SHAP value for dynamic hobbies ranked ninth.Overall, the type of dynamic hobby demonstrated a positive trend in its effect on the ability to perform daily activities independently and in achieving an EQ-5D weighted value of 1. Conclusions:In comparison to static hobbies, Chinese older adults who engage in dynamic hobbies exhibit improved daily mobility and a higher quality of life.Furthermore, dynamic hobbies positively influence the capacity for full independence in daily activities, as evidenced by an EQ-5D weighted value of 1.

Objective:To compare the clinical manifestations,laboratory results,and imaging features between pyogenic spondylitis(PS) and tuberculous spondylitis(TS).Methods:This was a cross-sectional study. A total of 88 patients with infectious diseases of spine(IDS) admitted to Shanghai Sixth People′s Hospital from January 2021 to December 2023 were analyzed,including 61 PS cases(PS group) and 27 TS cases(TS group). The clinical manifestations,laboratory results,and imaging features were compared between two groups. The factors associated with PS were analyzed by multivariate logistic regression. The diagnostic efficacy for pathogen identification was compared between metagenomics next-generation sequencing(mNGS) and bacterial culture methods in PS and TS patients.Results:Compared with the TS group,the PS group had a higher age-adjusted Charlson comorbidity index(aCCI)[3.0(1.5,4.0) points vs. 2.0(1.0,3.0) points, Z=-2.189, P=0.029],shorter onset time of disease[1.0(0.8,3.0) months vs. 6.0(2.0,12.0) months,Z=-4.353, P<0.001],and higher median blood leukocyte counts and serum ferritin(SF) level(7.2×10 9/L vs. 6.3×10 9/L, Z=-2.652, P=0.008; 571.3 ng/ml vs. 266.0 ng/ml, Z=-4.773, P<0.001). The proportions of lumbar spine involvement,non-collapsed involved vertebrae,and bone bridges formed were all higher in the PS group compared to the TS group[68.8%(99/144) vs. 41.4%(29/70), χ2=14.628, P<0.001; 68.9%(42/61) vs. 18.5%(5/27), χ2=19.055, P<0.001; 41.0%(25/61) vs. 7.4%(2/27), χ2=9.921, P=0.002]. The proportions of thoracic spine involvement,severe vertebral collapse,severe narrowing of the involved intervertebral space,sequestrum,and paravertebral soft tissue calcification were all higher in the TS group compared to the PS group[52.9%(37/70) vs. 18.1%(26/144), χ2=27.463, P<0.001; 55.6%(15/27) vs. 13.1%(8/61), χ2=17.462, P<0.001; 74.1%(20/27) vs. 37.7%(23/61), χ2=9.907, P=0.002; 74.1%(20/27) vs. 18.0%(11/61), χ2=25.761, P<0.001; 51.9%(14/27) vs. 6.6%(4/61), χ2=23.599, P<0.001]. Multivariate logistic regression analysis indicated that a symptom duration<5.5 months( OR=30.644,95% CI: 2.022-464.529, P<0.05) and a leukocyte count>7.35×10 9/L( OR=48.653,95% CI: 2.045-1 157.721, P<0.05) indicated a higher likelihood of PS; while the vertebral collapse indicated a higher likelihood of TS( OR=0.025,95% CI: 0.001-0.638, P<0.05). The most common pathogen in the PS group was Staphylococcus aureus(31 cases,50.8%),followed by Streptococcus species(10 cases,16.4%). The positive rates of mNGS testing in the PS and TS groups were 84.1%(37/44) and 12/13,respectively,which were higher than those of conventional bacterial culture[77.8%(42/54)] and Mycobacteriumtuberculosis culture(2/11). Conclusions:Compared with the TS patients,the PS patients have shorter onset time,higher aCCI scores,higher blood leukocyte counts and SF levels,less vertebral collapse and intervertebral space narrowing,and more bone bridge formation. The TS patients have more dead bones and calcifications. The mNGS has a higher diagnostic efficacy than bacterial cultures for PS and TS.

Objective To investigate the molecular mechanism of the induction of gastric cancer cell line AGS death by p97 inhibitor eeyarestatin Ⅰ(Eer Ⅰ).Methods AGS cells were treated with Eer Ⅰ.Then liquid chro-matography-mass spectrometry was used to perform proteome analysis for screening differentially expressed proteins and to find underlying signaling pathways.At the same time,the proteins of related pathway were investi-gated by protein immunoblotting.Cell proliferation was detected using the CCK-8 test kit;Cell apoptosis was detec-ted using TUNEL staining test kit;Liperfluo probe was used to detect ferroptosis-related lipid peroxides.Results In Eer Ⅰ treatment group,there were significant changes in proteins(fold change＞1.5 and P＜0.05),in which 125 proteins were increased and 132 proteins were decreased.The enrichment analysis of these DEPs showed that Eer Ⅰ might significantly affect cell apoptosis and ferroptosis-related signaling pathways.Furthermore,Eer Ⅰcould increase genomic DNA fragmentation related to cell apoptosis,increase of lipid peroxides in the ferroptosis pathway,causes changes in cell death related proteins,and inhibit the proliferation of gastric cancer cells.Conclusions p97 inhibitor Eer Ⅰ can induce cell apoptosis and ferroptosis in AGS cells,thereby inhibiting tumor cell proliferation.

Objective: To explore the efficacy of transcystoscopic holmium laser sieve-shaped fenestration in the treatment of ureteral cysts in children. Methods: The clinical data of 41 children with ureteral cysts treated in our hospital during Jan.2019 and Dec.2023 were retrospectively analyzed.All children received this surgery.The perioperative indicators and postoperative outcomes were recorded. Results: All operations were successful, the average operation time being (32.20±11.49) min.During the 12-month follow-up, the cysts were reduced or the obstructive symptoms were relieved in 31 cases, and the cysts completely disappeared in 6 cases.Vesicoureteral reflux (VUR) developed in 4 cases, 1 of which had grade Ⅱ VUR with no obvious symptoms and received conservative treatment.Repeated urinary tract infections developed in 2 cases; obstructive symptoms remained unchanged in 1 case; these 3 cases received vesicoureteral replantation.Two days before operation and 3 months after operation, the ureter diameter was (9.95±2.38) mm and (7.41±3.39) mm (t=3.16, P＜0.05), the anteroposterior diameter of the renal pelvis was (13.32±2.63) mm and (9.07±3.02) mm (t=6.86, P＜0.01). Conclusion: Transcystoscopic holmium laser sieve-shaped fenestration for children with ureteral cysts has good efficacy, little trauma and few complications.It can quickly relieve obstructive symptoms and can be used as the initial treatment of ureteral cysts.

Objective To investigate the diagnostic efficacy of targeted biopsy(TB)combined with ipsilateral hemiglandular systematic biopsy(SB)of the dominant lesion,so as to explore a novel reduced-core biopsy strategy.Methods A retrospective analysis was conducted on the clinical data of 299 patients treated in our hospital during Sep.1,2022,and Feb.28,2023,who had a Prostate Imaging Reporting and Data System(PI-RADS)score ≥3 and underwent combined TB and SB.The dominant lesion was defined as the lesion with the highest PI-RADS score on multi-parametric magnetic resonance imaging(mpMRI);in cases of identical scores,the largest was designated as the dominant.SB was categorized as ipsilateral(ipsi-SB)or contralateral(contra-SB)to the dominant lesion.The consistency in detecting clinically significant prostate cancer(csPCa)was compared between TB with ipsi-SB(TB+ipsi-SB),TB with contra-SB(TB+contra-SB),and TB with SB(TB+SB).Subgroup analyses were performed based on PI-RADS score,prostate-specific antigen(PSA)level,prostate volume(PV),and mpMRI lesion distribution to evaluate csPCa detection rates across different variables.Results TB+ipsi-SB demonstrated comparable detection rate to TB+SB(46.2％vs.46.8％).The K values for TB+ipsi-SB and TB+contra-SB relative to TB+SB were 0.987(95％CI:0.969-1.000,P＜0.01)and 0.933(95％CI:0.892-0.974,P＜0.01),respectively.Across all subgroups,TB+ipsi-SB showed the highest agreement with TB+SB.Notably,in subgroups with PI-RADS 3 and 5,PSA＞0-20 ng/mL,PV＜25 mL,bilateral or multiple mpMRI lesions,TB+ipsi-SB achieved complete concordance with TB+SB in csPCa detection[K=1.000(95％CI:1.000-1.000),P＜0.01].Conclusion For patients with PI-RADS score ≥3,TB+ipsi-SB exhibits near-perfect consistency with TB+SB in csPCa detection while requiring fewer biopsy cores.TB+ipsi-SB represents a promising refinement of the TB+SB approach.

Objective To investigate the diagnostic efficacy of targeted biopsy(TB)combined with ipsilateral hemiglandular systematic biopsy(SB)of the dominant lesion,so as to explore a novel reduced-core biopsy strategy.Methods A retrospective analysis was conducted on the clinical data of 299 patients treated in our hospital during Sep.1,2022,and Feb.28,2023,who had a Prostate Imaging Reporting and Data System(PI-RADS)score ≥3 and underwent combined TB and SB.The dominant lesion was defined as the lesion with the highest PI-RADS score on multi-parametric magnetic resonance imaging(mpMRI);in cases of identical scores,the largest was designated as the dominant.SB was categorized as ipsilateral(ipsi-SB)or contralateral(contra-SB)to the dominant lesion.The consistency in detecting clinically significant prostate cancer(csPCa)was compared between TB with ipsi-SB(TB+ipsi-SB),TB with contra-SB(TB+contra-SB),and TB with SB(TB+SB).Subgroup analyses were performed based on PI-RADS score,prostate-specific antigen(PSA)level,prostate volume(PV),and mpMRI lesion distribution to evaluate csPCa detection rates across different variables.Results TB+ipsi-SB demonstrated comparable detection rate to TB+SB(46.2％vs.46.8％).The K values for TB+ipsi-SB and TB+contra-SB relative to TB+SB were 0.987(95％CI:0.969-1.000,P＜0.01)and 0.933(95％CI:0.892-0.974,P＜0.01),respectively.Across all subgroups,TB+ipsi-SB showed the highest agreement with TB+SB.Notably,in subgroups with PI-RADS 3 and 5,PSA＞0-20 ng/mL,PV＜25 mL,bilateral or multiple mpMRI lesions,TB+ipsi-SB achieved complete concordance with TB+SB in csPCa detection[K=1.000(95％CI:1.000-1.000),P＜0.01].Conclusion For patients with PI-RADS score ≥3,TB+ipsi-SB exhibits near-perfect consistency with TB+SB in csPCa detection while requiring fewer biopsy cores.TB+ipsi-SB represents a promising refinement of the TB+SB approach.

With the rapid development of competitive sports, the incidence of anterior cruciate ligament (ACL) injury is on the rise. Such injuries may shorten athletes′ career and lead to other long-term adverse consequences. Although athletes generally recover well after ACL reconstruction, many still struggle to return to their pre-injury performance levels. Advances in the understanding of ACL anatomy and injury mechanisms, along with the evolution of surgical techniques and rehabilitation methods, have provided more individualized and tailored options for athletes following ACL injuries. However, there is currently no consensus in China regarding surgical and rehabilitation strategies for competitive athletes aiming to return to sports after ACL injuries. To this end, the Sports Medicine Committee of the Chinese Research Hospital Association and the Editorial Board of the Chinese Journal of Trauma jointly formulated the Expert consensus on surgical treatment and rehabilitation for competitive sports athletes returning to sports after anterior cruciate ligament injury ( version 2025), and presented 14 recommendations covering surgical indications, preoperative rehabilitation, surgical timing, surgical strategies and postoperative rehabilitation strategies, aiming to improve the surgical treatment and rehabilitation system for ACL injuries in competitive athletes and facilitate their return to high-level sports performance after injury.