Objective To explore the application value of computed tomography (CT) three-dimensional reconstruction in total knee arthroplasty (TKA). Methods A total of 102 patients who underwent TKA in our hospital between April 2022 and April 2025 were enrolled and divided using a random number table into a traditional group (51 cases, routine preoperative evaluation) and a study group (51 cases, CT three-dimensional reconstruction-assisted surgery). The therapeutic efficacy at 3 months postoperatively and perioperative indicators were compared between the two groups. The hip-knee-ankle (HKA) angle was measured preoperatively and at 3 months postoperatively. The Hospital for Special Surgery (HSS) knee score and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score were recorded preoperatively and at 3 and 6 months postoperatively. Complications were documented. Results The excellent/good rate in the study group (92.16%) was higher than that in the traditional group (74.51%) (P<0.05). The operation time, intraoperative blood loss, postoperative drainage volume, and hospital stay in the study group were (69.52 ± 7.11) min, (102.69 ± 8.54) mL, (167.33 ± 12.35) mL, and (10.93 ± 2.37) days, respectively, which were shorter than those in the traditional group [(78.45 ± 5.98) min, (108.36 ± 10.02) mL, (175.96 ± 14.93) mL, and (12.04 ± 1.95) days] (P<0.05). At 3 months postoperatively, the HKA angle was 178.02° ± 1.05° in the study group and 177.45° ± 1.34° in the traditional group, both were significantly improved compared with those before operation, with the study group showing better improvement (P<0.05). The HSS knee and WOMAC scores in both groups at 3 and 6 months postoperatively were improved compared with preoperative scores (P<0.05). At 3 and 6 months postoperatively, the study group showed higher HSS knee score and lower WOMAC score than the traditional group (P<0.05). The incidence of complications in the study group (3.92%) was lower than that in the traditional group (17.65%) (P<0.05). Conclusion TKA guided by CT three-dimensional reconstruction improved the excellent/good rate, optimized HKA angle and knee function, shortened operation time and hospital stay, reduced intraoperative blood loss and postoperative drainage volume, and decreased the incidence of complications.

Objective To explore the application value of computed tomography (CT) three-dimensional reconstruction in total knee arthroplasty (TKA). Methods A total of 102 patients who underwent TKA in our hospital between April 2022 and April 2025 were enrolled and divided using a random number table into a traditional group (51 cases, routine preoperative evaluation) and a study group (51 cases, CT three-dimensional reconstruction-assisted surgery). The therapeutic efficacy at 3 months postoperatively and perioperative indicators were compared between the two groups. The hip-knee-ankle (HKA) angle was measured preoperatively and at 3 months postoperatively. The Hospital for Special Surgery (HSS) knee score and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score were recorded preoperatively and at 3 and 6 months postoperatively. Complications were documented. Results The excellent/good rate in the study group (92.16%) was higher than that in the traditional group (74.51%) (P<0.05). The operation time, intraoperative blood loss, postoperative drainage volume, and hospital stay in the study group were (69.52 ± 7.11) min, (102.69 ± 8.54) mL, (167.33 ± 12.35) mL, and (10.93 ± 2.37) days, respectively, which were shorter than those in the traditional group [(78.45 ± 5.98) min, (108.36 ± 10.02) mL, (175.96 ± 14.93) mL, and (12.04 ± 1.95) days] (P<0.05). At 3 months postoperatively, the HKA angle was 178.02° ± 1.05° in the study group and 177.45° ± 1.34° in the traditional group, both were significantly improved compared with those before operation, with the study group showing better improvement (P<0.05). The HSS knee and WOMAC scores in both groups at 3 and 6 months postoperatively were improved compared with preoperative scores (P<0.05). At 3 and 6 months postoperatively, the study group showed higher HSS knee score and lower WOMAC score than the traditional group (P<0.05). The incidence of complications in the study group (3.92%) was lower than that in the traditional group (17.65%) (P<0.05). Conclusion TKA guided by CT three-dimensional reconstruction improved the excellent/good rate, optimized HKA angle and knee function, shortened operation time and hospital stay, reduced intraoperative blood loss and postoperative drainage volume, and decreased the incidence of complications.

Objective To explore the application value of computed tomography (CT) three-dimensional reconstruction in total knee arthroplasty (TKA). Methods A total of 102 patients who underwent TKA in our hospital between April 2022 and April 2025 were enrolled and divided using a random number table into a traditional group (51 cases, routine preoperative evaluation) and a study group (51 cases, CT three-dimensional reconstruction-assisted surgery). The therapeutic efficacy at 3 months postoperatively and perioperative indicators were compared between the two groups. The hip-knee-ankle (HKA) angle was measured preoperatively and at 3 months postoperatively. The Hospital for Special Surgery (HSS) knee score and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score were recorded preoperatively and at 3 and 6 months postoperatively. Complications were documented. Results The excellent/good rate in the study group (92.16%) was higher than that in the traditional group (74.51%) (P<0.05). The operation time, intraoperative blood loss, postoperative drainage volume, and hospital stay in the study group were (69.52 ± 7.11) min, (102.69 ± 8.54) mL, (167.33 ± 12.35) mL, and (10.93 ± 2.37) days, respectively, which were shorter than those in the traditional group [(78.45 ± 5.98) min, (108.36 ± 10.02) mL, (175.96 ± 14.93) mL, and (12.04 ± 1.95) days] (P<0.05). At 3 months postoperatively, the HKA angle was 178.02° ± 1.05° in the study group and 177.45° ± 1.34° in the traditional group, both were significantly improved compared with those before operation, with the study group showing better improvement (P<0.05). The HSS knee and WOMAC scores in both groups at 3 and 6 months postoperatively were improved compared with preoperative scores (P<0.05). At 3 and 6 months postoperatively, the study group showed higher HSS knee score and lower WOMAC score than the traditional group (P<0.05). The incidence of complications in the study group (3.92%) was lower than that in the traditional group (17.65%) (P<0.05). Conclusion TKA guided by CT three-dimensional reconstruction improved the excellent/good rate, optimized HKA angle and knee function, shortened operation time and hospital stay, reduced intraoperative blood loss and postoperative drainage volume, and decreased the incidence of complications.

Objective To observe the effect of knee arthroscopic enlarged valve resection(AEVR)combined with cyst wall resection(CWR)on popliteal cyst.Methods A retrospective analysis was conducted on the clinical data of 80 patients with popliteal cyst from June 2022 to June 2023.They were divided into two groups based on different surgical methods.Group A received 39 cases of traditional open cystectomy(TOC),while group B received 41 cases of AEVR-CWR.The perioperative indicators,length of hospital stay,pain status,knee joint function,knee joint range of motion,popliteal cyst grading,postoperative complications,and cyst survival were compared between the two groups.Results The surgical bleeding volume,total incidence of postoperative complications,and residual cyst rate at 6 months after surgery in group B were lower than those in group A,the incision length,and hospital stay in group B were shorter than those in group A,surgery time in group B was longer than that in group A,the differences were statistically significant(P＜0.05).After surgery,the visual analogue scale(VAS)of both groups was lower than that before surgery,and group B was lower than group A,the difference was statistically significant(P＜0.05).After surgery,the Lysholm score of both groups were higher than that before surgery,and group B was higher than group A,the knee range of motion of both groups were greater than that before surgery,and group B was greater than group A,the differences were statistically significant(P＜0.05).After surgery,the Rauschning-Lindgren grading of both groups was better than that before surgery,and group B was better than group A,the difference was statistically significant(P＜0.05).Conclusion The combination of AEVR and CWR can reduce surgical bleeding,shorten incision length and hospital stay,alleviate pain,improve knee joint range of motion,knee joint function,and grading of popliteal cysts,reduce the total incidence of postoperative complications and the residual rate of cysts at 6 months after surgery,but the surgery time has been extended.

Objective To observe the effect of knee arthroscopic enlarged valve resection(AEVR)combined with cyst wall resection(CWR)on popliteal cyst.Methods A retrospective analysis was conducted on the clinical data of 80 patients with popliteal cyst from June 2022 to June 2023.They were divided into two groups based on different surgical methods.Group A received 39 cases of traditional open cystectomy(TOC),while group B received 41 cases of AEVR-CWR.The perioperative indicators,length of hospital stay,pain status,knee joint function,knee joint range of motion,popliteal cyst grading,postoperative complications,and cyst survival were compared between the two groups.Results The surgical bleeding volume,total incidence of postoperative complications,and residual cyst rate at 6 months after surgery in group B were lower than those in group A,the incision length,and hospital stay in group B were shorter than those in group A,surgery time in group B was longer than that in group A,the differences were statistically significant(P＜0.05).After surgery,the visual analogue scale(VAS)of both groups was lower than that before surgery,and group B was lower than group A,the difference was statistically significant(P＜0.05).After surgery,the Lysholm score of both groups were higher than that before surgery,and group B was higher than group A,the knee range of motion of both groups were greater than that before surgery,and group B was greater than group A,the differences were statistically significant(P＜0.05).After surgery,the Rauschning-Lindgren grading of both groups was better than that before surgery,and group B was better than group A,the difference was statistically significant(P＜0.05).Conclusion The combination of AEVR and CWR can reduce surgical bleeding,shorten incision length and hospital stay,alleviate pain,improve knee joint range of motion,knee joint function,and grading of popliteal cysts,reduce the total incidence of postoperative complications and the residual rate of cysts at 6 months after surgery,but the surgery time has been extended.

Objective:To investigate the effects of sarcopenia on therapeutic response and prognosis of newly diagnosed acute myeloid leukemia(AML)patients,and reveal its predictive value for the clinical outcomes of AML patients.Methods:A total of 122 AML patients who were initially diagnosed and treated with induction chemotherapy at the Department of Hematology in the Affiliated Hospital of Nantong University from January 2017 to December 2020 were included in this study.The sarcopenia was diagnosed by measuring body composition parameters with multifrequency bioelectrical impedance analyzer,and all AML patients were divided into sarcopenia and non-sarcopenia groups.Kaplan-Meier curves and log-rank test were used to compare the survival difference between the two groups.The relationship between sarcopenia and overall survival(OS)of AML patients was further determined by the univariate and multivariate Cox regression analysis.Results:Among 122 AML patients,46(37.7％)were diagnosed with sarcopenia before induction chemotherapy.The body mass index(BMI)of patients with sarcopenia was significantly lower than that of non-sarcopenia patients(t=4.258,P＜0.001),and the complete response(CR)and partial response(PR)rates of sarcopenia patients after induction chemotherapy were significantly lower than those of non-sarcopenia patients(x2=6.348,P=0.042).Kaplan-Meier curves showed that sarcopenic patients had a shorter OS than non-sarcopenic patients,and the median OS of the two groups were 20.7(95％CI:12.6-27.8)months and 27.8(95％CI:22.3-31.9)months,respectively(x2=5.659,P=0.017).Subgroup analysis indicated that the median OS of sarcopenic and non-sarcopenic AML patients who received standard induction chemotherapy were 12.2(95％CI:5.4-24.7)months and 26.1(95％CI:16.7-35.4)months,respectively(x2=3.949,P=0.047).The multivariate Cox regression analysis revealed that sarcopenia(HR=1.671,95％CI:1.034-2.701,P=0.036)was an independent predictor for poor prognosis in AML patients.Conclusion:Sarcopenia is significantly associated with low response rate of induction chemotherapy and poor prognosis in AML patients,and it might be an useful tool for predicting the clinical outcome of AML patients.

BACKGROUND: Current replacement procedures for stenosis or occluded arteries using prosthetic grafts have serious limitations in clinical applications, particularly, endothelialization of the luminal surface is a long-standing unresolved problem.METHOD: We produced a cell-based hybrid vascular graft using a bioink engulfing adipose-derived mesenchymal stromal cells (ADSCs) and a 3D bioprinting process lining the ADSCs on the luminal surface of GORE-Tex grafts. The hybrid graft was implanted as an interposition conduit to replace a 3-cm-long segment of the infrarenal abdominal aorta in Rhesus monkeys. RESULTS: Complete endothelium layer and smooth muscle layer were fully developed within 21 days post-implantation, along with normalized collagen deposition and crosslinking in the regenerated vasculature in all monkeys. The regenerated blood vessels showed normal functionality for the longest observation of more than 1650 days. The same procedure was also conducted in miniature pigs for the interposition replacement of a 10-cm-long right iliac artery and showed the same long-term effective and safe outcome. CONCLUSION This cell-based vascular graft is ready to undergo clinical trials for human patients.

Aim To investigate the protective effect of mGluR5 activated by VU0360172 on germinal matrix hemorrhage in neonatal rats.Methods Seven day- old SD rats were randomly divided into Sham, GMH, and low-, medium-, and high-dose groups.The model was established by intracerebral injection of collagenase W-S.Then three doses of VU0360172 were injected intraperitoneal^ 3 h after surgery.Sham and GMH group were given the same amount of solvent.Neurobe- havioral tests were performed 24 h after surgery.Then the brain tissues were collected for evaluation of brain water content, brain hemoglobin content and HE stai¬ning.The expressions of Bcl-2 and cleaved-caspase-3 were determined by Western blot.Results Compared with Sham, GMH group had pooler behaviors in neuro- functional tests with increased brain water content and brain hemoglobin content (P < 0.01 ).And brain tis¬sues were destroyed significantly.WB results showed the expression level of Bcl-2 decreased ( P < 0.05 ) , while cleaved-caspase-3 being up-regulated ( P < 0.01).However, the administration of VU0360172 improved neurological function and ameliorated brain edema and hemorrhage ( P <0.01 ).Brain pathologi¬cal damage was reduced.Moreover, the stimulation of mGluR5 up-regulated Bcl-2 protein expression ( P < 0.05 ) and decreased the level of cleaved-caspase-3 ( P <0.01 ).Conclusion Activation of mGluR5 by VIJ0360172 protects against germinal matrix hemor¬rhage in neonatal rats.

This study aims to acetylate Rehmannia glutinosa polysaccharides by acetic anhydride method, optimize process parameters and evaluate their antioxidant activity. With the degree of substitution(D_s) as a criterion, the effects of reaction time, acetic anhydride-to-polysaccharides ratio and temperature were investigated. Process parameters were optimized by single-factor experiment and response surface methodology. The infrared spectroscopy(IR) and scanning electron microscopy(SEM) proved the successful acetylation and were employed to preliminarily analyze the structural characteristics of acetylated derivatives. The results showed that the D_s was 0.327 under the optimal technological conditions, including m(acetic anhydride):m(R. glutinosa polysaccharides)=2.70, reaction time 3.0 h and temperature 48 ℃. Further, the antioxidant properties of acetylated derivatives were investigated in vitro and acetylation was found effective to improve the antioxidant activity of R. glutinosa polysaccharides. This study provides a reference for the further development and application of R. glutinosa polysaccharides.
Acetylation ; Antioxidants/pharmacology* ; Polysaccharides/pharmacology* ; Rehmannia/chemistry*

OBJECTIVES: To study the clinical and prognostic significance of the preferentially expressed antigen of melanoma (PRAME) gene in the absence of specific fusion gene expression in children with B-lineage acute lymphoblastic leukemia (B-ALL). METHODS: A total of 167 children newly diagnosed with B-ALL were enrolled, among whom 70 were positive for the PRAME gene and 97 were negative. None of the children were positive for MLL-r, BCR/ABL, E2A/PBX1, or ETV6/RUNX1. The PRAME positive and negative groups were analyzed in terms of clinical features, prognosis, and related prognostic factors. RESULTS: Compared with the PRAME negative group, the PRAME positive group had a significantly higher proportion of children with the liver extending >6 cm below the costal margin (P<0.05). There was a significant reduction in the PRAME copy number after induction chemotherapy (P<0.05). In the minimal residual disease (MRD) positive group after induction chemotherapy, the PRAME copy number was not correlated with the MRD level (P>0.05). In the MRD negative group, there was also no correlation between them (P>0.05). The PRAME positive group had a significantly higher 4-year event-free survival rate than the PRAME negative group (87.5%±4.6% vs 73.5%±4.6%, P<0.05), while there was no significant difference between the two groups in the 4-year overall survival rate (88.0%±4.4% vs 85.3%±3.8%, P>0.05). The Cox proportional-hazards regression model analysis showed that positive PRAME expression was a protective factor for event-free survival rate in children with B-ALL (P<0.05). CONCLUSIONS Although the PRAME gene cannot be monitored as MRD, overexpression of PRAME suggests a good prognosis in B-ALL.
Acute Disease ; Antigens, Neoplasm/therapeutic use* ; Child ; Humans ; Neoplasm, Residual/diagnosis* ; Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics* ; Prognosis