Objective To preliminarily investigate the safety and efficacy of donor pancreas needle biopsy in simultaneous pancreas-kidney transplantation. Methods Clinical data of 7 cases undergoing donor pancreas biopsy were collected retrospectively. All cases underwent donor pancreas biopsy before or during simultaneous pancreas-kidney transplantation. Frozen section or paraffin sectioning techniques were used for tissue preparation, and hematoxylin-eosin and Masson staining were performed to histologically evaluate the donor pancreas. The quality of donor pancreas was comprehensively assessed by combining histological findings with the donor's clinical data. Postoperative follow-up data of 5 simultaneous pancreas-kidney transplant recipients were collected to summarize the safety of donor pancreas biopsy and the prognosis of transplant recipients. Results The 7 pancreas donors were aged 28 to 62 years, with a body mass index ranging from 20.76 to 27.68 kg/m². Liver ultrasound indicated fatty liver in 3 cases, while pancreatic ultrasound did not reveal any significant abnormalities. Among them, biopsy was performed on 2 donors after completion of pancreatic procurement and processing, and the frozen section histology showed moderate acute pancreatitis changes (edema of acinar cells, necrosis and inflammatory cell infiltration). Combined with a serum amylase level elevated more than 3 times the upper limit of normal value, these two donor pancreases were finally discarded. The remaining 5 cases underwent biopsy immediately after pancreatic vascular anastomosis during simultaneous pancreas-kidney transplantation, and histological evaluation was performed on paraffin-embedded sections. No biopsy-related complications (such as bleeding, pancreatic fistula, etc.) occurred after transplantation. One recipient died of severe infection 2 months after transplantation, while the other 4 recipients were followed up for more than 5 years, with well-functioning transplant kidneys and pancreases. Conclusions Donor pancreas biopsy is relatively safe, and the risk of biopsy-related complications after transplantation is controllable. Comprehensive assessment of donor pancreas quality by combining histological evaluation with the donor's clinical indicators is conducive to improving the accuracy of donor pancreas selection and organ utilization.

The concept of holism is the core idea of traditional Chinese medicine （TCM）. Various organs and tissues coordinate with each other to maintain the body's life activities， with a close and mutual influence between the spleen， stomach， and the central nervous system （brain）. The gut-brain axis plays an important bridging role between the digestive system and the central nervous system， achieving bidirectional information exchange between the brain and the gastrointestinal tract through complex neuroendocrine and immune mechanisms. The theory of cross-organ interaction involves the mutual influence， coordination， and integration between different organs and systems； multimodality， on the other hand， utilizes multiple sensory modalities， such as vision， hearing， and touch， to convey information. By combining TCM theory with the gut-brain axis theory， a cross-organ multimodal characterization system is established to explore its mechanism and application value in refractory diseases such as functional gastrointestinal disorders， precancerous gastrointestinal diseases， Alzheimer's disease， Parkinson's syndrome， type 2 diabetes， and depression.

Lung cancer （LC） is a significant global public health issue， with both its incidence and mortality rates ranking among the highest worldwide. The age-standardized incidence and mortality rates are increasing annually， posing a serious threat to the life and health of LC patients. Radical surgical resection is the primary treatment for malignant lung tumors. However， postoperative multidimensional functional impairments， including respiratory， mucosal， and psychological functions， are common. These impairments not only reduce patients' quality of life and affect their treatment tolerance and duration， but also negatively correlate with prognosis， facilitating disease recurrence and metastasis. At present， postoperative functional dysfunction after LC surgery remains a key clinical challenge that urgently needs to be addressed. There is a lack of standardized and regulated postoperative rehabilitation treatment management and traditional Chinese medicine （TCM） differentiation and treatment strategies for LC. Focusing on the core underlying pathogenesis of "Qi sinking" after LC surgery， and guided by the classical TCM theory of "lungs governing Qi"， this study， based on the core concept of the "five perspectives on treatment" theory， innovatively proposes the respiratory dysfunction as the core pathogenesis of "Qi sinking in the chest" during the rapid rehabilitation phase， mucosal dysfunction as the core pathogenesis of "Yin deficiency and Qi sinking" during the postoperative adjuvant treatment phase， and the psychological dysfunction as the core pathogenesis of "Qi sinking with emotional constraint" during the consolidation phase. Accordingly， stage-specific dynamic functional protection strategies are constructed. In the rapid rehabilitation phase， the strategy emphasizes tonifying Qi and uplifting sinking Qi， with differentiation and treatment based on the principle of ''descending before ascending''. In the adjuvant treatment phase， the approach focuses on nourishing Yin and uplifting Qi， with prescription combinations that integrate unblocking and tonification. In the consolidation phase， the strategy aims to resolve constraint and uplift Qi， with clinical treatment emphasizing a combination of dynamic and static methods. At each stage of functional rehabilitation， clinical differentiation and treatment should support healthy Qi and eliminate pathogenic factors simultaneously. This study is the first to propose the concept of postoperative functional protection in TCM， offering a new approach for TCM differentiation and treatment in the full-cycle， stage-based， and dynamic protection of postoperative function in LC patients. It is expected to contribute to the construction and development of an integrated TCM-Western medicine comprehensive program for cancer prevention and treatment in China.

The study was a prospective observational study. A total of 24 patients who underwent maintenance hemodialysis (MHD) at Haidian Hospital in Beijing from May 2024 to June 2024 were included as the study subjects. The safety and efficacy of a new single-needle dialysis in MHD patients were evaluated. The reasons for using single-needle dialysis included waiting for the maturity of internal fistula(7 cases, 29.17%), autogenous arteriovenous fistula thrombosis occurred (6 cases, 25.00%), puncture difficulty occurred (7 cases, 29.17%), and pain sensitivity or elderly (4 cases, 16.67%). The results showed that the average blood flow was (155.65±5.90) ml/min, total blood volume was (35.92±2.65) L during single-needle dialysis. One patient had slight puncture leakage, and the puncture success rate was 95.83%. Relevant indicators of dialysis adequacy showed that the average urea clearance (Kt/V) was 0.90±0.42, urea reduction ratio was 58.31%±7.93%, and online real-time Kt/V monitoring average value was 0.98±0.55. The results suggest that the application of the new improved single-needle dialysis mode in MHD patients is safe and effective.

OBJECTIVE: To discuss the elbow skin fold extension line in Kirschner wire internal fixation of extended supracondylar humeral fractures in children. METHODS: The clinical data of 58 children with extended supracondylar fractures of the humerus who met the selection criteria between August 2021 and July 2024 were retrospectively analyzed. In 28 cases, needle placement of medial epicondyle of humerus was performed with the assistance of the elbow skin fold extension line (study group), and 30 cases were assisted by routine touch of the medial epicondyle of the humerus (control group). There was no significant difference in baseline data such as gender, age, side, cause of injury, Gartland type, Kirschner wire configuration, and time from injury to operation between the two groups ( P>0.05). The closed reduction rate, total operation time, time of medial humeral condyle pin placement, fluoroscopy times during medial pin placement, rate of one-time determination of medial entry point, ulnar nerve injury incidence, and fracture healing time were recorded and compared between the two groups. At the same time, the closed reduction rate of patients with the time from injury to operation ≤24 hours and >24 hours was compared. The elbow function was evaluated by Mayo elbow function score. RESULTS: The closed reduction rate of the study group was significantly higher than that of the control group ( P<0.05). Among all patients, the closed reduction rate of patients with the time from injury to operation ≤24 hours [73.3% (22/30)] was significantly higher than that of patients >24 hours [42.9% (12/28)] ( χ ²=5.545, P=0.019). The total operation time, medial needle placement time, and fluoroscopy times in the study group were significantly less than those in the control group, and the one-time determination rate of medial needle entry point in the study group was significantly higher than that in the control group ( P<0.05). There were 4 cases of ulnar nerve injury in the control group, and no ulnar nerve injury in the study group, but there was no significant difference in the incidence of ulnar nerve injury between the two groups ( P>0.05). All patients were followed up 6-12 months (mean, 8 months). There was no bone nonunion in both groups, and the fracture healing time of the study group was significantly shorter than that of the control group ( P<0.05). Volkmann ischemic contracture, heterotopic ossification, myositis ossificans, and premature epiphyseal closure were not observed after operation. No complications such as loosening or fracture of Kirschner wire occurred. At last follow-up, the Mayo elbow joint function score was used to evaluate function, and there was no significant difference between the two groups ( P>0.05). CONCLUSION In the treatment of extended supracondylar fractures of the humerus in children, the elbow skin fold extension line can help to quickly locate the medial epicondyle of the humerus, quickly insert Kirschner wire, and reduce the operation time and trauma.
Humans ; Humeral Fractures/surgery* ; Bone Wires ; Male ; Female ; Fracture Fixation, Internal/instrumentation* ; Retrospective Studies ; Child ; Elbow Joint/physiopathology* ; Child, Preschool ; Treatment Outcome ; Fracture Healing ; Ulnar Nerve/injuries* ; Adolescent ; Range of Motion, Articular

T-cell acute lymphoblastic leukemia (T-ALL) is a highly aggressive hematologic malignancy with a poor prognosis, despite advancements in treatment. Many patients struggle with relapse or refractory disease. Investigating the role of the super-enhancer (SE) regulated gene ubiquitin-specific protease 20 (USP20) in T-ALL could enhance targeted therapies and improve clinical outcomes. Analysis of histone H3 lysine 27 acetylation (H3K27ac) chromatin immunoprecipitation sequencing (ChIP-seq) data from six T-ALL cell lines and seven pediatric samples identified USP20 as an SE-regulated driver gene. Utilizing the Cancer Cell Line Encyclopedia (CCLE) and BloodSpot databases, it was found that USP20 is specifically highly expressed in T-ALL. Knocking down USP20 with short hairpin RNA (shRNA) increased apoptosis and inhibited proliferation in T-ALL cells. In vivo studies showed that USP20 knockdown reduced tumor growth and improved survival. The USP20 inhibitor GSK2643943A demonstrated similar anti-tumor effects. Mass spectrometry, RNA-Seq, and immunoprecipitation revealed that USP20 interacted with hypoxia-inducible factor 1 subunit alpha (HIF1A) and stabilized it by deubiquitination. Cleavage under targets and tagmentation (CUT&Tag) results indicated that USP20 co-localized with HIF1A, jointly modulating target genes in T-ALL. This study identifies USP20 as a therapeutic target in T-ALL and suggests GSK2643943A as a potential treatment strategy.

OBJECTIVES: To explore the expression profile of circular RNAs (circRNAs) and their potential roles in prognosis and progression of Wilms' tumor (WT). METHODS: Four pairs of WT and adjacent tissues were collected for high-throughput circRNA sequencing to identify the differentially expressed circular RNAs. RT-qPCR was used to verify the expression levels of the top 6 candidate circRNAs in the clinical samples. hsa_circ_0001900 was selected for analysis of its correlation with clinicopathological features and prognosis in 34 patients with WT. Sanger sequencing and RNase R digestion experiments were used to verify the cycling site and structural stability of hsa_circ_0001900 molecule. RESULTS: A total of 23 978 circular RNA molecules were identified in WT tissues by high-throughput circular RNA sequencing, and among them 614 were differentially expressed in WT. hsa_circ_0001900 showed the highest expression level among the differentially expressed circRNAs, which was consistent with the findings in clinical tumor samples and the sequencing results. Correlation analysis showed that hsa_circ_0001900 expression level was positively correlated with WT volume, and the children with high hsa_circ_0001900 expression had a lowered recurrence-free survival rate. The results of Sanger sequencing verified the circular splice site sequence of the molecule, and Rnase R digestion assay confirmed its stable covalent structure. CONCLUSIONS This study presents a comprehensive expression profile of circular RNAs in WT, and the expression level of hsa_circ_0001900 is related to the size of WT and the patients' prognosis, suggesting its possible role as a key driving gene in WT progression.
Humans ; RNA, Circular ; Wilms Tumor/pathology* ; Prognosis ; High-Throughput Nucleotide Sequencing ; Kidney Neoplasms/genetics* ; Sequence Analysis, RNA ; Male ; Female

Objective To investigate the relationship between serum metalloproteinase-2(MMP-2),total antioxi-dant capacity(T-AOC),C-reactive protein(CRP),and recurrence in inguinal hernia(IH)patients with postoperative laparoscopic total extraperitoneal repair(TEP),as well as their predictive value.Methods A total of 122 IH pa-tients undergoing TEP in the First Affiliated Hospital of Xi'an Jiaotong University from January 2019 to De-cember 2022 were selected as the observation group,and 122 healthy subjects during the same period were se-lected as the control group.The patients were followed up for 10 months,and were divided into relapse group(n=37)and recovery group(n=85)according to their recurrence situation.Serum MMP-2 levels were detec-ted by automatic biochemical analyzer,T-AOC levels were determined by chemical colorimetric method,and CRP levels were assessed by enzyme-linked immunosorbent assay.The influencing factors of TEP recurrence in IH patients were analyzed by Logistic regression.The predictive value of serum MMP-2,T-AOC and CRP for postoperative TEP recurrence in IH patients was analyzed by receiver operating characteristic(ROC)curve.Results Serum MMP-2 and CRP levels in observation group were significantly higher than those in control group(P＜0.05),and T-AOC levels were significantly lower than those in control group(P＜0.05).MMP-2 and CRP in relapse group were significantly higher than those in recovery group(P＜0.05),and T-AOC level was lower than that in recovery group(P＜0.05).The area under the curve(AUC)of serum MMP2,T-AOC and CRP in pre-dicting TEP recurrence in IH patients were 0.775,0.804 and 0.731,respectively,and the AUC of the combined pre-diction of the three was 0.887,which was better than that of each indicator alone(Z=2.597,1.983,3.275,P=0.009,0.047,0.001).Conclusion Serum levels of MMP-2,T-AOC and CRP in IH patients with postoperative TEP recurrence significantly increase,which can be used as effective indicators to predict the postoperative TEP recurrence in IH patients,and the combined prediction efficiency of the three is higher.

Objective:To investigate the efficacy of virtual simulation-guided unilateral locking plate combined with Jail screw technique for double column tibial plateau fractures involving the posterolateral plateau.Methods:A retrospective case series study was conducted to analyze the clinical data of 32 patients with double column tibial plateau fractures involving the posterolateral plateau admitted to Nanjing Drum Tower Hospital Group Suqian Hospital from March 2018 to March 2022, including 20 males and 12 females, aged 37-69 years [(47.5±6.9)years]. According to AO/OTA classification, the fractures were classified as type 41B in 17 patients and type 41C in 15. According to the three-column classification, the fractures were classified as lateral column+posterior column in 17 patients and medial column+posterior column in 15. Virtual simulation technique was used to simulate surgical operation before surgery. After reduction, the patients′ tibial plateau mirror models of the healthy side were used to simulate the implantation of internal fixators on the affected side. The position data of the placed internal fixators were obtained to guide the personalized treatment with unilateral locking plate combined with Jail screw technique. The total number of Jail screws, average number of Jail screws, distribution and accuracy of screw placement, operative duration, intraoperative blood loss, and fracture healing status were recorded. The posterior tibial plateau angle (PTSA), proximal medial tibial angle (MPTA) and Rasmussen anatomical score were compared before operation, at 1, 3, 6, 12 months after operation and at the last follow-up. The Lysholm scores at 6, 12 months after operation and at the last follow-up were used to evaluate the knee function. At the last follow-up, the knee range of motion was measured. Postoperative complications were observed.Results:All the patients were followed up for 28-36 months [(30.7±2.3)months]. The total number of Jail screws inserted was 48, with an average of (1.5±0.5) screws. In the sagittal direction, 1-2 Jail screws were inserted in each patient, with an accuracy rate of 88% (42/48). The operative duration was 78-116 minutes [(98.7±10.5)minutes]. The intraoperative blood loss was 70-120 ml [(96.6±15.6)ml]. All the fractures had healing of stage I, with a healing time of 4-7 months [(5.4±0.9)months]. At 1, 3, 6, 12 months after operation and at last follow-up, the PTSA, MPTA, and Rasmussen anatomical scores were significantly improved when compared with those before operation ( P<0.05), while there was no statistically significant difference between those at various postoperative time points ( P>0.05). The Lysholm knee scores were (83.6±3.9)points, (88.5±3.6)points, and (93.7±2.6)points at 6, 12 months after operation, and at the last follow-up, respectively, which were gradually increased with the passage of the follow-up time ( P<0.05). The range of motion was (121.4±4.6)° in flexion and was 0.0(0.0, 3.0)° in extension at the last follow-up. Two patients had superficial wound infection and 1 had wound dehiscence after operation, which recovered with dressing change or debridement and suturing. No deep infection, vascular injury or nerve damage occurred. Conclusions:The virtual simulation-guided unilateral locking plate combined with Jail screw technique has the advantages of high accuracy of screw placement, shorter operative duration, less intraoperative blood loss, satisfactory fracture reduction, favorable recovery of knee function and range of motion, and fewer postoperative complications in the treatment of double column tibial plateau fractures involving the posterolateral plateau.

BACKGROUND:In most species,a bone defect that is longer than 1.5 or 2 times its diameter can be considered a critical bone defect,and when the bone defect volume reaches the critical value,it cannot heal on its own.Currently,there is no uniform standard for the size of critical-sized defects in the osteoporotic femoral condyle of rabbits.OBJECTIVE:To establish a rabbit model with different sizes of bone defects in the osteoporotic femoral condyle and to determine the critical-sized defects of osteoporotic femoral condyle in rabbits.METHODS:Thirty-six 3-month-old female New Zealand white rabbits were randomly divided into ovariectomy group(n=30)and sham operation group(n=6).Rabbits in the ovariectomy group underwent bilateral ovariectomy to establish an osteoporosis model,and then femoral condyle bone defect models of different diameters(diameters were 4,5,6,and 7 mm,and depths were 8 mm)were further established;rabbits in the sham operation group did not undergo ovariectomy.At 8 and 12 weeks after modeling,3 rats were randomly selected from each group for CT scanning and three-dimensional reconstruction to evaluate the healing of bone defects.Afterwards,samples were taken for gross observation and hematoxylin-eosin staining to observe the growth of new bone in the femoral condyle bone defect area.RESULTS AND CONCLUSION:(1)All rabbits survived and moved well after modeling of osteoporosis and femoral condyle bone defect.(2)At 12 weeks after osteoporosis modeling,dual-energy X-ray absorptiometry results showed that the bone mineral density of lumbar vertebrae in ovariectomy group was significantly lower than that in sham operation group(P＜0.05).Hematoxylin-eosin staining showed that the bone trabeculae in the ovariectomy group became thinner and sparse.The proportion of bone tissue area in the ovariectomy group was significantly lower than that in the sham operation group(P=0.00).Micro-CT results showed that the bone tissue parameters of the femoral condyle in the ovariectomy group were significantly different from those in the sham operation group(P＜0.05),and the ovariectomy group showed obvious characteristics of osteoporosis.(3)CT showed that the bone defect in the 4 mm and 5 mm diameter groups was basically completely repaired at 12 weeks after surgery.There was more new bone tissue in the 6 mm diameter group,but the central part of the bone defect was not completely repaired.A small amount of new bone tissue grew in the 7 mm diameter group,and the bone defect was obvious.(4)Gross observation at 12 weeks after surgery showed that the femoral condyle bone defect in the 4 mm and 5 mm diameter groups was completely repaired.Obvious depression was seen in the bone defect area of the 6 mm and 7 mm diameter groups,and the bone defect was not completely repaired.(5)Histological observation at 12 weeks after surgery showed that the bone defect area of the 4 mm and 5 mm diameter groups was completely filled with new bone,and the trabecular structure was irregular;while there were new trabeculae in the periphery of the 6 mm and 7 mm diameter groups,and the bone defect in the central area was still obvious.(6)The results showed that during the 12-week experimental observation period of osteoporotic femoral condyle defects in rabbits,under the condition of the same defect depth of 8 mm,femoral condyle defects with a diameter ≥ 6 mm could not heal on their own,while femoral condyle defects with a diameter＜6 mm were completely repaired.A diameter of 6 mm and a depth of 8 mm can be used as the critical bone defect value of osteoporotic femoral condyle in rabbits.