AIM:To investigate the effects of glutathione-S-transferase(GST)gene polymorphism on the concentration of 6-thioguanine nucleotides(6-TGN),an active metabolite of azathioprine(AZA),in patients with inflammatory bowel disease(IBD),in order to provide reference for the optimization of AZA treatment in patients.METHODS:The clini-cal data of patients with IBD treated by AZA were collected prospectively,the genotypes of GST-A1,GST-M1,GST-P1 and GST-T1 were detected by tar-geted sequencing of multiplex PCR combined with high-throughput sequencing technology before ad-ministration,and the steady-state trough concen-trations of 6-TGN in patients' red blood cells were determined by HPLC.Statistical analysis was carried out by SPSS 26.0 software.RESULTS:A total of 90 patients were included in this study.The alleles fre-quencies of GST-A1,GST-M1,GST-P1 and GST-T1 were consistent with Hardy-Weinberg equilibrium law.Logistic regression analysis showed that carry-ing GST-A1 mutant gene was an independent risk factor for the increase of trough concentration of 6-TGN(low concentration OR=17.50,P=0.030;high concentration OR=3.60,P=0.033),while the gene polymorphism of GST-M1,GST-P1,GST-T1 had no significant correlation with the concentration of 6-TGN(P＞0.05).CONCLUSION:The gene polymor-phism of GST-A1 may affect the concentration of 6-TGN,an active metabolite of AZA,and detection of GST-A1 genotype before AZA treatment will contrib-ute to clinical individualized medication.

AIM:To investigate the effects of glutathione-S-transferase(GST)gene polymorphism on the concentration of 6-thioguanine nucleotides(6-TGN),an active metabolite of azathioprine(AZA),in patients with inflammatory bowel disease(IBD),in order to provide reference for the optimization of AZA treatment in patients.METHODS:The clini-cal data of patients with IBD treated by AZA were collected prospectively,the genotypes of GST-A1,GST-M1,GST-P1 and GST-T1 were detected by tar-geted sequencing of multiplex PCR combined with high-throughput sequencing technology before ad-ministration,and the steady-state trough concen-trations of 6-TGN in patients' red blood cells were determined by HPLC.Statistical analysis was carried out by SPSS 26.0 software.RESULTS:A total of 90 patients were included in this study.The alleles fre-quencies of GST-A1,GST-M1,GST-P1 and GST-T1 were consistent with Hardy-Weinberg equilibrium law.Logistic regression analysis showed that carry-ing GST-A1 mutant gene was an independent risk factor for the increase of trough concentration of 6-TGN(low concentration OR=17.50,P=0.030;high concentration OR=3.60,P=0.033),while the gene polymorphism of GST-M1,GST-P1,GST-T1 had no significant correlation with the concentration of 6-TGN(P＞0.05).CONCLUSION:The gene polymor-phism of GST-A1 may affect the concentration of 6-TGN,an active metabolite of AZA,and detection of GST-A1 genotype before AZA treatment will contrib-ute to clinical individualized medication.

Objective:To evaluate the feasibility, safety, and clinical outcomes of full-time full-endoscopic lumbar interbody fusion (FELIF) using a bladed retractor fusion channel (BRFC) system with reversed-mounting designed instruments compared to a tubular fusion channel (TFC).Methods:This retrospective study analyzed 101 cases of uniportal coaxial endoscopic lumbar interbody fusion performed between June 2018 and April 2023. Based on the type of fusion channel utilized, patients were divided into the TFC group (59 cases) and the BRFC group (42 cases). The BRFC technique involved neurological decompression, endplate preparation, and interbody fusion performed under full-time endoscopic monitoring with reversed-mounting designed instruments. Key parameters, including surgery duration, intraoperative estimated blood loss (IEBL), complication incidence, and interbody fusion rate (assessed by Bridwell criteria), were compared between the two groups. Clinical outcomes, including visual analog scale (VAS) scores for back and leg pain, Japanese Orthopaedic Association (JOA) scores, and Oswestry Disability Index (ODI), were recorded preoperatively, postoperatively, and at the final follow-up. Additionally, disc height at the fusion level was measured at one week postoperatively.Results:The mean follow-up duration was 42.9±12.1 months in the TFC group and 20.9±4.9 months in the BRFC group. No statistically significant differences were observed between the two groups in terms of surgery duration, IEBL, complication incidence, or interbody fusion rate (Grade 1 or 2 by Bridwell criteria) ( P>0.05). For single-level cases, the TFC group showed significantly better short-term clinical outcomes than the BRFC group at one week postoperatively, with JOA scores of 23(20, 25) versus 20(18, 23) ( Z=3.020, P=0.003) and ODI scores of 16%(11%, 21%) versus 28%(21%, 41%) ( Z=4.740, P<0.001). For double-level cases, the JOA score in the TFC group [23(20, 25)] was also significantly better than that in the BRFC group [20(18, 21)] ( Z=2.054, P=0.040) at one week postoperatively. However, at the final follow-up, all clinical indicators showed no significant differences between the two groups ( P>0.05). The disc height at the fusion level significantly increased at one week postoperatively compared to preoperative measurements in both groups ( P<0.05). However, the BRFC group demonstrated a significantly more recovery of disc height at one week postoperatively [(1.46±0.28) cm] compared to the TFC group [(1.17±0.20) cm] ( t=5.947, P<0.001). Conclusion:Full-time FELIF using the BRFC system and reversed-mounting designed instruments is a feasible, safe, and effective approach. However, its short-term clinical outcomes appear inferior to traditional FELIF using the TFC system.

Nonunion of osteoporotic vertebral fractures (OVF), predominantly affecting the elderly, can lead to intractable pain, vertebral collapse, progressive kyphotic deformity, and neurological impairment, significantly compromising patients′ quality of life. There exists considerable debate on diagnosis and management of OVF, encompassing key issues such as clinical diagnosis and staging criteria for nonunion, surgical indications and procedure selection, and postoperative rehabilitation planning. Currently, there lacks standardized clinical guideline and expert consensus on the diagnosis and management of OVF nonunion in China. To address this gap, Minimally Invasive Surgery Group of Chinese Orthopedic Association, Osteoporosis Committee of Chinese Association of Orthopedic Surgeons, Prevention and Rehabilitation Committee for Osteoporosis of Chinese Association of Rehabilitation Medicine and Minimally Invasive Orthopedic Surgery Branch of China Association for Geriatric Care jointly organized domestic experts in spinal surgery, endocrinology, and rehabilitation to formulate the Clinical guideline for the diagnosis and treatment for nonunion of osteoporotic vertebral fractures ( version 2025), based on existing literature and clinical experience and adhering to principles of scientific rigor and practicality. The guideline provided 13 evidence-based recommendations encompassing diagnosis and treatment of OVF nonunion, aiming to standardize its clinical management.

Objective:To evaluate the feasibility, safety, and clinical outcomes of full-time full-endoscopic lumbar interbody fusion (FELIF) using a bladed retractor fusion channel (BRFC) system with reversed-mounting designed instruments compared to a tubular fusion channel (TFC).Methods:This retrospective study analyzed 101 cases of uniportal coaxial endoscopic lumbar interbody fusion performed between June 2018 and April 2023. Based on the type of fusion channel utilized, patients were divided into the TFC group (59 cases) and the BRFC group (42 cases). The BRFC technique involved neurological decompression, endplate preparation, and interbody fusion performed under full-time endoscopic monitoring with reversed-mounting designed instruments. Key parameters, including surgery duration, intraoperative estimated blood loss (IEBL), complication incidence, and interbody fusion rate (assessed by Bridwell criteria), were compared between the two groups. Clinical outcomes, including visual analog scale (VAS) scores for back and leg pain, Japanese Orthopaedic Association (JOA) scores, and Oswestry Disability Index (ODI), were recorded preoperatively, postoperatively, and at the final follow-up. Additionally, disc height at the fusion level was measured at one week postoperatively.Results:The mean follow-up duration was 42.9±12.1 months in the TFC group and 20.9±4.9 months in the BRFC group. No statistically significant differences were observed between the two groups in terms of surgery duration, IEBL, complication incidence, or interbody fusion rate (Grade 1 or 2 by Bridwell criteria) ( P>0.05). For single-level cases, the TFC group showed significantly better short-term clinical outcomes than the BRFC group at one week postoperatively, with JOA scores of 23(20, 25) versus 20(18, 23) ( Z=3.020, P=0.003) and ODI scores of 16%(11%, 21%) versus 28%(21%, 41%) ( Z=4.740, P<0.001). For double-level cases, the JOA score in the TFC group [23(20, 25)] was also significantly better than that in the BRFC group [20(18, 21)] ( Z=2.054, P=0.040) at one week postoperatively. However, at the final follow-up, all clinical indicators showed no significant differences between the two groups ( P>0.05). The disc height at the fusion level significantly increased at one week postoperatively compared to preoperative measurements in both groups ( P<0.05). However, the BRFC group demonstrated a significantly more recovery of disc height at one week postoperatively [(1.46±0.28) cm] compared to the TFC group [(1.17±0.20) cm] ( t=5.947, P<0.001). Conclusion:Full-time FELIF using the BRFC system and reversed-mounting designed instruments is a feasible, safe, and effective approach. However, its short-term clinical outcomes appear inferior to traditional FELIF using the TFC system.

Objective To investigate the value of dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI)parameters in evaluating the short-term prognosis of laryngeal cancer patients after postoperative radiotherapy.Methods A case-control study was performed on 127 laryngeal cancer patients admitted to our hospital from January 2021 to December 2023.The patients underwent different tumor treatment followed by radical radiotherapy.According to tumor recurrence or not,they were divided into a recurrence group(n=50)and a non-recurrence group(n=77).DCE-MRI parameters,such as volume transfer constant(Ktrans),rate constant(Kep),and volume fraction of extracellular extravascular space(Ve),and clinical data were compared between the 2 groups.Multivariate logistic regression analysis was used to identify influencing factors for short-term prognosis after radiotherapy.Receiver operating characteristic(ROC)curves were plotted to evaluate the predictive efficacy of DCE-MRI parameters,and the area under the curve(AUC)was calculated.Results The recurrence group had significantly larger proportions of positive surgical margins,preoperative maximum lesion diameter≥4 cm,ulcerative lesions,stages N1～N3,and advanced stages Ⅲ～Ⅳ,and obviously higher Ktrans and Kep values but lower Ve valus than the non-recurrence group(P<0.05).Multivariate logistic regression analysis indicated that positive surgical margins,stages N1～N3,Ktrans,and Kep were independent risk factors for short-term prognosis,while Ve was a protective factor(P<0.05).ROC curve analysis showed that the AUC value of combination of Ktrans,Kep and Ve and of above 5 indicators in predicting short-term prognosis of postoperative radiotherapy for laryngeal cancer was 0.920(95%CI:0.858～0.961)and 0.923(95%CI:0.862～0.963),respectively.Though the AUC value of combined 3 parameters was significantly higher than that of the single indicator alone(P<0.05),there was no difference in the value between the combination of 3 parameters and the combined application of the 5 indicators.Conclusion DCE-MRI parameters Ktrans,Kep,and Ve are closely associated with short-term prognosis of postoperative radiotherapy for laryngeal cancer.Their combination has a good predictive efficacy for the short-term prognosis of the patients.

Nonunion of osteoporotic vertebral fractures (OVF), predominantly affecting the elderly, can lead to intractable pain, vertebral collapse, progressive kyphotic deformity, and neurological impairment, significantly compromising patients′ quality of life. There exists considerable debate on diagnosis and management of OVF, encompassing key issues such as clinical diagnosis and staging criteria for nonunion, surgical indications and procedure selection, and postoperative rehabilitation planning. Currently, there lacks standardized clinical guideline and expert consensus on the diagnosis and management of OVF nonunion in China. To address this gap, Minimally Invasive Surgery Group of Chinese Orthopedic Association, Osteoporosis Committee of Chinese Association of Orthopedic Surgeons, Prevention and Rehabilitation Committee for Osteoporosis of Chinese Association of Rehabilitation Medicine and Minimally Invasive Orthopedic Surgery Branch of China Association for Geriatric Care jointly organized domestic experts in spinal surgery, endocrinology, and rehabilitation to formulate the Clinical guideline for the diagnosis and treatment for nonunion of osteoporotic vertebral fractures ( version 2025), based on existing literature and clinical experience and adhering to principles of scientific rigor and practicality. The guideline provided 13 evidence-based recommendations encompassing diagnosis and treatment of OVF nonunion, aiming to standardize its clinical management.

Objective:To review the research advance on post-spaceflight recuperation and rehabilitation strategies. Literature resource and selection 　Relevant literatures on post-flight rehabilitation and convalescence of astronauts published in domestic and abroad. Literature quotation 　Twenty-nine references were cited. Literature synthesis 　The long-term spaceflight environment results in adaptive modifications of multiple systems of astronaut′s body. These modifications can have a negative impact on astronauts′ physical health and overall productivity. Post-spaceflight rehabilitation is an important measure to ensure the health of astronauts. By employing physical therapy and exercise training, combining with natural healing factors, and implementing phased reconditioning plan, astronauts can quickly readapt to the gravity environment, restore physical functions, and achieve a good physical and mental state in preparation for the next spaceflight mission. Conclusions:It is urgent to develop individualized exercise prescriptions by effectively enhance post-spaceflight rehabilitation outcomes, and to establish reasonable evaluation indicators.

Objective To comprehensively analyze the effectiveness of exercise training-based respiratory rehabilitation therapy on patients with occupational pneumoconiosis (hereinafter referred to as "pneumoconiosis"). MethodsLiterature on randomized controlled trials of exercise training-based respiratory rehabilitation therapy for pneumoconiosis patients published from the establishment of the database to July 2023 was retrieved from academic systems such as the China National Knowledge Infrastructure, Wanfang Data Knowledge Service Platform, VIP Database, and China Biology Medicine using bibliometrics method. The RevMan 5.4 software was used for meta-analysis of the selected literatures. Subgroup analysis was conducted to explore the source of study heterogeneity. The funnel plot method was used to test publication bias. Results A total of 55 articles were included, involving 2 436 pneumoconiosis patients in the experimental group and 2 405 pneumoconiosis patients in the control group. The result of random or fixed effect model showed that the six minutes walking distance, the total score of Short from Health Survey-36, forced vital capacity (FVC), forced expiratory volume in one second (FEV₁), FEV₁/FVC, arterial partial pressure of oxygen of pneumoconiosis patients increased after respiratory rehabilitation therapy (all P<0.05), while the total score of the St. George's Respiratory Questionnaire and arterial partial pressure of carbon dioxide decreased compared with the conventional treatment (all P<0.05). The result of subgroup analysis showed that the total score of the St. George's Respiratory Questionnaire, FEV₁, and the index of arterial partial pressure of oxygen of pneumoconiosis patients was better in the rehabilitation treatment for ≥six months compared with those

Objective:To analyze the clinic effects of arthroscopic partial trapeziectomy and suture button suspensionplasty in the treatment of first carpometacarpal joint (CMCJ) Eaton stage II/III arthrosis.Methods:A retrospective study was conducted on a total of 15 cases (16 hands) of patients including 5 males (1 bilateral) and 10 females with CMCJ stage II/III arthrosis who underwent surgical treatment at the first affiliated hospital of Shenzhen university from January 2020 to June 2022, with mean age of 56.7±6.4 years (range, 46-75 years). The duration from pain to treatment was 7.8±3.2 months (range, 4-14 months). X-ray showed narrowing of CMCJ with osteophytes and distal radial subluxation. All the patients were treated with arthroscopic partial trapeziectomy and suture button suspensionplasty. The preoperative and last postoperative follow-up radiographs, visual analogue scale (VAS), thumb's Kapandji scores, disabilies of the arm, shoulder, and hand (DASH) scores, grip and pinch strength and time to return to work were compared.Results:All cases were followed up for 19.6±6.3 months (range, 11-36 months). The postoperative X-ray showed all the CMCJs were reduced with a normal height of first metacarpal. The mean time for patients to return to their daily activities was 18.69±3.70 d and the mean time to return to work was 24.63±4.91 d. The average VAS score decreased from 6.56±1.15 preoperatively to 1.00 (0.75, 1.25). The preoperative Kapandji's score was 8.00±0.82 and the postoperative Kapandji's score was 8.00 (7.25, 9.00). The average DASH values improved from 24.06±3.19 to 4.00 (3.00, 5.00). The were significant differences except for Kapandji score ( Z=-4.905, P<0.001; Z=-0.121, P=0.905; Z=-4.846, P<0.001). The mean grip and pinch strength showed improvement from an average of 16.4 (14.13, 18.68) kg and 1.70±0.35 kg to 26.14±3.27 kg and 3.58±0.91 kg with significant difference ( Z=-4.617, P<0.001; t=-7.669, P<0.001). Conclusion:Arthroscopic partial trapeziectomy and suture button suspensionplasty is a minimally invasive surgery for the treatment of first CMCJ Eaton stage II/III arthrosis. By this technique, the patients' existing instability and pain problems can be solved.