1.Progress in diagnosis and treatment of oral and maxillofacial venous malformations
HOU Jinsong ; ZHANG Yadong ; LIU Haichao
Journal of Prevention and Treatment for Stomatological Diseases 2025;33(11):919-931
Venous malformation is a common congenital, non-tumor vascular malformation, accounting for about 60% of all vascular malformations, of which 40% occur in the head and neck. Due to the complex anatomical structure of the oral and maxillofacial region and the diverse classification of venous malformations, their clinical treatment poses certain difficulties and challenges. This article systematically elaborates on the etiology, clinical manifestations, imaging features, and clinical treatment strategies of venous malformations in the oral and maxillofacial region. Molecular genetic studies have shown that the occurrence and development of venous malformations are closely related to abnormal activation of the ANGPT/TIE2/PI3K/AKT/mTOR signaling pathway; its clinical manifestations are gradually growing blue purple masses and its histological features are tortuous venous ducts; and clinical imaging examinations have high specificity, among which digital subtraction angiography classification has important clinical guidance value for the treatment of venous malformation sclerosis. According to different classifications, strategies, such as sclerosis treatment, surgical treatment, and laser treatment, can be applied separately or in combination. This article also explores the advantages and disadvantages of targeted therapy in the treatment of venous malformations, with a focus on improving clinical outcomes while reducing complications. At the same time, through the analysis of typical clinical cases, it summarizes the key points of diagnosis and treatment and treatment plans, in order to provide a reference for improving the clinical efficacy of venous malformation treatment and reducing treatment complications.
2.Effects of sacral neuromodulation on urodynamic parameters during the storage phase in patients with neurogenic bladder
Haichao LIU ; Guoqing CHEN ; Peng ZHANG ; Fan ZHANG ; Baihui WANG ; Fei ZHOU ; Yanhe JU
Journal of Modern Urology 2025;30(12):1075-1079
Objective To explore the effects of sacral neuromodulation (SNM) on urodynamic parameters during the storage phase in patients with neurogenic bladder (NB), so as to provide reference for evaluating the efficacy of SNM. Methods A total 49 NB patients undergoing SNM at our hospital during Oct.2012 and May 2025 were enrolled. Baseline data and video-urodynamic parameters were collected. Changes in maximum cystometric capacity, maximum detrusor pressure during storage phase, and bladder compliance before and after treatment were assessed. Improvements in detrusor overactivity (DO) and vesicoureteral reflux (VUR) were also analyzed. Results Among the 49 patients,27 were male and 22 were female, with a mean age of (37.41±15.15) years, a median disease duration of 5.0 (2.0,15.5) years, and a median follow-up of 11 (1,32) months. Up to 37 patients (75.5%) received permanent sacral nerve pulse generator implantation (permanent implant group), while the remaining 12 were classified as the non-permanent implant group. Before and after the test period, all patients showed a significant increase in maximum cystometric capacity [ (218.0 (93.0,358.5) mL vs.300.0 (238.5, 400.0) mL, P<0.001], a decrease in maximum detrusor pressure during the filling phase [32.0 (13.5,71.0) cmH_2 O vs. 20.0 (9.0,50.0) cmH_2 O, P<0.001], and an improvement in bladder compliance [11.8 (8.3,25.6) mL/cmH_2 O vs.26.7 (8.6,44.1) mL/cmH_2O, P<0.001]. In the permanent implant group, comparisons before and after the test period showed an increase in maximum bladder capacity [ (239.16±147.23) mL vs. (312.24±121.83) mL, P<0.001], a decrease in maximum detrusor pressure during filling[32.0 (15.0,58.0) cmH_2 O vs.15.0 (9.0,41.0) cmH_2 O, P<0.05], and improved bladder compliance [10.8 (8.3,23.6) mL/cmH_2 O vs.28.6 (8.6,41.4) mL/cmH_2 O, P<0.001]. No statistically significant differences in these parameters before and after the test period were observed in the non-permanent implant group (P>0.05). A total of 17 patients in the permanent implant group underwent follow-up video urodynamics. Compared to pre-test values, significant improvements were observed in maximum detrusor pressure during filling, and bladder compliance both at the end of the test period and at the last follow-up (P<0.05). However, no statistically significant differences were found in maximum cystometric capacity, maximum detrusor pressure during filling, and bladder compliance between the end of the test period and the last follow-up (P>0.05). Among the 49 patients,21 had DO and 20 had VUR. Both DO and VUR showed improvement after the test period and at the last follow-up. Conclusion SNM can effectively improve storage function in NB patients, ameliorate detrusor overactivity and bladder compliance, and relieve or eliminate VUR in some patients. Long-term follow-up confirms that SNM provides stable therapeutic effects, demonstrating significant clinical value.
3.A multicenter clinical study on intramedullary vancomycin injection for preventing periprosthetic joint infection in total knee arthroplasty
Te LIU ; Jun FU ; Shiguang LAI ; Zhuo ZHANG ; Chi XU ; Lei GENG ; Yang LUO ; Peng REN ; Xin ZHI ; Quanbo JI ; Heng ZHANG ; Runkai ZHAO ; Haichao REN ; Ye TAO ; Qingyuan ZHENG ; Zeyu FENG ; Jianfeng YANG ; Yiming WANG ; Pengcheng LI ; Shuai LIU ; Wei CHAI ; Xiang LI ; Huiwu LI ; Xiaogang ZHANG ; Baochao JI ; Xianzhe LIU ; Xinzhan MAO ; Jianbing MA ; Xiangxiang SUN ; Jiying CHEN ; Yonggang ZHOU ; Jinliang WANG ; Weijun WANG ; Guoqiang ZHANG ; Ming NI
Chinese Journal of Orthopaedics 2025;45(12):803-811
Objective:To explore the safety and efficacy of intraosseous regional administration (IORA) of vancomycin for preventing infection in primary total knee arthroplasty (TKA).Methods:A total of 124 patients with knee osteoarthritis undergoing TKA between February 2024 and May 2024 at nine hospitals were enrolled. Preoperative infection prophylaxis involved either IORA (0.5 g vancomycin administered via intraosseous regional infusion before incision) or intravenous infusion (1 g vancomycin via peripheral vein). The IORA group included 15 males and 47 females with a median age of 66.5 years (range, 60.0-70.0 years), while the intravenous group included 14 males and 48 females with a median age of 66.0 years (range, 61.8-70.3 years) years. Intraoperative samples were collected including fat and synovium tissues after incision, before prosthesis placement, and after tourniquet release; distal femoral cancellous bone during femoral osteotomy; proximal tibial cancellous bone during tibial osteotomy; proximal intercondylar cancellous bone before prosthesis placement; and peripheral blood from non-infused arms at surgery initiation and after tourniquet release. Vancomycin concentrations were measured using liquid chromatography-tandem mass spectrometry. Vital sign changes were recorded from admission to 5~10 minutes post-IORA (IORA group) or post-incision (intravenous group). Follow-ups were conducted on postoperative day 1 and 3, and at 1 and 3 months, to document complications including IORA-related adverse events, periprosthetic joint infections, surgical site infections, red man syndrome, acute kidney injury, deep vein thrombosis and so on.Results:Vancomycin concentrations in bone, fat, and synovial tissue samples were significantly higher in the IORA group than in the intravenous group ( P<0.05), while vancomycin concentrations in blood samples were significantly lower in the IORA group than in the intravenous group ( P<0.05). Only 7.3%(41/558) of tissue samples in the IORA group had vancomycin concentrations below 2.0 μg/g (the minimum inhibitory concentration of vancomycin against coagulase-negative staphylococcus), compared to 59.3%(331/558) in the intravenous group (χ 2=11.285, P<0.001). In the intravenous group, 16.9%(21/124) of blood samples had vancomycin concentrations exceeding 15.0 mg/L (the threshold associated with a significantly increased risk of nephrotoxicity), while all concentrations in the IORA group were below this threshold, the difference was statistically significant (χ 2=22.943, P<0.001). There were no statistically significant difference ( P>0.05) in vital signs changes before and after vancomycin administration between the two groups. Two patients in the intravenous group experienced incision exudate, while no other related complications occurred in either group. Conclusions:Compared to the traditional intravenous infusion of 1 g vancomycin, intraosseous injection of a low dose (0.5 g) of vancomycin achieves higher local tissue concentrations in the knee joint with a lower incidence of adverse reactions and is safe for infection prophylaxis. Despite guidelines not recommending the routine use of vancomycin for preventing infection after primary TKA, intraosseous injection of 0.5 g vancomycin may be considered intraoperatively for primary TKA in the following scenarios: patients in medical institutions with a high prevalence of methicillin-resistant staphylococcus aureus (MRSA) infections, patients with potential preoperative MRSA colonization, or patients with cephalosporin allergy.
4.Study on the molecular mechanism of miR-886-5p targeting BAX to inhibit proliferation, migration and invasion of liver cancer cells
Shaopeng LIU ; Haichao LIU ; Hongxian YAN ; Minghui BAI ; Jixiang ZHANG ; Yingbo LI ; Chuang WANG ; Xiang ZOU
Chinese Journal of Hepatobiliary Surgery 2025;31(8):621-627
Objective:To investigate the molecular mechanism of miR-886-5p targeting BCL-2-associated X protein (BAX) to inhibit the proliferation, migration, and invasion of liver cancer cells.Methods:mRNA expression data of HCC patients were obtained from the Starbase database, including 370 liver cancer samples and 50 normal liver tissue samples adjacent to the cancer. Analyze the expression of miR-886-5p in the previously obtained data and investigate the relationship between miR-886-5p and BAX in liver cancer samples. After transfection of the corresponding plasmids into Huh7 and HepG2 cells, the following groups were established. Analyze the interaction between miR-886-5p and BAX in vitro, detect the protein expression by Western blotting, and verify the targeting relationship between the two by dual luciferase reporter gene assay.Results:Starbase database analysis found that the standardized expression level of miR-886-5p in 370 liver cancer samples was lower than that in normal liver tissue samples (0.12±0.07 vs. 0.73±0.27, t=-15.71, P<0.001), and the expression level of miR-886-5p was positively correlated with the expression level of BAX ( r=0.152, P=0.003). qRT-PCR analysis showed that the expression level of miR-886-5p in HL-7702 cells was higher than that in Huh7 (4.57±0.06 vs. 1.61±0.40, t=32.48) and HepG2 (4.57±0.06 vs. 1.03±0.13, t=143.9), and the expression level of BAX in HL-7702 cells was higher than that in Huh7 (4.01±0.12 vs. 1.28±0.09, t=82.20) and HepG2 (4.01±0.12 vs. 1.30±0.11, t=80.76), the differences were statistically significant (all P<0.001). The proliferation, migration, and invasion abilities of Huh7 and HepG2 cells decreased after transfection with miR-886-5p mimics, while the expression levels of BAX at the mRNA and protein levels increased. However, after inhibiting the expression of miR-886-5p, the above indicators of cells were the opposite, and the dif-ferences were statistically significant (all P<0.05). The viability, EdU positivity rate, cell migration rate, and number of transmembrane cells in the miR-886-5p+ BAX group were lower than those in the BAX group, and the relative expression levels of miR-886-5p, BAX mRNA, and BAX protein were higher than those in the BAX group. However, the above indicators in the Sponge+ BAX group showed opposite trends, and all differences were statistically significant (all P<0.05). There was a targeted binding site between miR-886-5p and BAX. Conclusion:Both miR-886-5p and BAX are downregulated in liver cancer, and miR-886-5p inhibits the proliferation, migration, and invasion of liver cancer cells by targeting BAX.
5.Effect and mechanism of hydroxytyrosol on mouse chondrocyte injury induced by H2O2
Haichao YU ; Wenchao WANG ; Junzhao DUAN ; Hua WANG ; Xuesong ZHANG
Chinese Journal of Pharmacology and Toxicology 2025;39(3):183-190
OBJECTIVE To investigate the effect and underlying mechanism of hydroxytyrosol(HT)on mouse chondrocyte injury induced by oxidative stress.METHODS Mouse chondrocytes were incubated with varying concentrations of HT 0-400 μmol L-1 for 24 h,and the viability of the mouse chondrocytes was assessed using CCK-8 kit.An oxidative stress model of chondrocytes was estab-lished by the addition of H2O2 200 μmol L-1.The experimental groups included the cell control group,H2O2 group,and H2O2+HT 10,50 and 250 μmol·L-1 groups.After 24 h,the mRNA expression levels of interleukin-6(IL-6),cyclooxygenase-2(COX-2),prostaglandin E2(PGE2),inducible nitric oxide synthase(iNOS),matrix metalloproteinase-3(MMP-3),MMP-13,a disintegrin and metalloproteinase with throm-bospondin motifs-4(ADAMTS-4),ADAMTS-5,SRY-box transcription factor-9(SOX-9)and aggrecan(ACAN)in mouse chondrocytes were detected by real-time quantitative PCR,the intracellular reactive oxygen species(ROS)level in chondrocytes was measured with 2,7-dichlorodihydrofluorescein diace-tate(DCFH-DA)staining,while the mitochondrial membrane potential was evaluated using JC-1 staining.After 48 h,the protein expression levels of iNOS,COX-2,MMP-13,and type Ⅱ collagen(Col-2)in mouse chondrocytes were detected using Western blotting.RESULTS HT at concentrations≤350 μmol·L-1 had no significant effect on the survival of mouse chondrocytes.Compared with the cell control group,after 24 h,the mRNA expression levels of IL-6,COX-2,PGE2,iNOS,MMP-3,MMP-13,ADAMTS-4 and ADAMTS-5 in the chondrocytes of mice in the H2O2 group were increased,while the mRNA expression levels of SOX-9 and ACAN were decreased.Additionally,there was an elevation in the ROS level and a significant loss of mitochondrial membrane potential in the chondrocytes of mice.Compared with the H2O2 group,after treatment with HT 10,50 and 250 μmol·L-1,there were significant decreases in mRNA expression levels of IL-6,COX-2,PGE2,iNOS,MM P-3,MMP-13,ADAMTS-4 and ADAMTS-5,the mRNA expressions of SOX-9 and ACAN were increased,the ROS level was lowered.After treatment with HT 50 and 250 μmol L-1,the loss of mitochondrial membrane potential was ameliorated.Compared to the cell control group,the protein expressions of iNOS,COX-2 and MMP-13 were upregulated in the H2O2 group,while the protein expression of Col-2 was downregulated after 48 h.Compared to the H2O2 group,treatment with HT at concentrations of 10,50 and 250 μmol·L-1 resulted in decreased protein expressions of iNOS,COX-2 and MMP-13 in mouse chondrocytes,but the protein expression of Col-2 increased following treatment with HT 50 and 250 μmol L-1.CONCLUSION HT can ameliorate H2O2-induced chondrocyte injury by reducing intracellular ROS levels and alleviating the loss of mitochondrial membrane potential,suppressing the release of inflammatory cytokines,inhibiting catabolic processes,and promoting anabolic activities.
6.Clinical characteristics of 21 cases of nocardiosis and antimicrobial resistance of Nocardia strains in a hospital in Henan Province
Bing LIANG ; Wenqing YUAN ; Liang ZHAO ; Xinli ZHANG ; Chunxia HU ; Jinghua HU ; Haichao WANG
Chinese Journal of Infection and Chemotherapy 2025;25(2):127-131
Objective The clinical characteristics of 21 cases of nocardiosis were reviewed and antimicrobial resistance of Nocardia strains was analyzed in order to improve the accuracy of clinical diagnosis and treatment of nocardiosis.Methods Clinical data of patients diagnosed with nocardiosis in Zhoukou Central Hospital from 2019-2023 and the corresponding results of antimicrobial susceptibility testing were retrospectively analyzed to summarize the clinical characteristics and outcomes of patients.Results Overall,the 21 cases of nocardiosis included 9 males and 12 females,aged 2-91 years.Underlying disease was reported in 15 patients.Most common type of nocardiosis was pulmonary nocardiosis in 15 cases,followed by skin and soft tissue infection,pleurisy,lymphadenitis,and disseminated nocardiosis.Laboratory tests showed increased levels of WBC,neutrophils percentage,erythrocyte sedimentation rate,C-reactive protein,and procalcitonin.The 21 strains of Nocardia included 4 strains of Nocardia cyriacigeorgica,2 strains each of Nocardia brasiliensis,Nocardia abscessus,Nocardia asiatica,Nocardia otitidiscaviarum and Nocardia beijingensis,and 1 strain each of Nocardia puris,Nocardia asteroides,Nocardia farcinica,Nocardia pneumoniae,Nocardia amamiensis,and 2 strains of unclassified Nocardia.All of the Nocardia strains(100%)were susceptible to linezolid,amikacin,and trimethoprim-sulfamethoxazole,followed by various levels of susceptibility to cefotaxime,moxifloxacin,imipenem and ceftriaxone,and lower susceptibility rate to cefepime,minocycline,ciprofloxacin and clarithromycin.Antimicrobial susceptibility of Nocardia strains varied with different Nocardia species.Of the 21 patients,two were referred to other hospitals,another two died,two patients received unknown treatment,and the remaining 15 patients were improved after antibiotic treatment,including sulfonamides combined with other antibiotics in 11 cases,other antibiotics in 4 cases.Conclusions Immunocompromised patients or those with underlying diseases are more susceptible to nocardiosis.The clinical features are complex and diverse.Antimicrobial susceptibility of Nocardia strains varied with different Nocardia species.Accurate identification and antimicrobial susceptibility test are essential for prescribing effective antibiotic treatment.
7.A multicenter clinical study on intramedullary vancomycin injection for preventing periprosthetic joint infection in total knee arthroplasty
Te LIU ; Jun FU ; Shiguang LAI ; Zhuo ZHANG ; Chi XU ; Lei GENG ; Yang LUO ; Peng REN ; Xin ZHI ; Quanbo JI ; Heng ZHANG ; Runkai ZHAO ; Haichao REN ; Ye TAO ; Qingyuan ZHENG ; Zeyu FENG ; Jianfeng YANG ; Yiming WANG ; Pengcheng LI ; Shuai LIU ; Wei CHAI ; Xiang LI ; Huiwu LI ; Xiaogang ZHANG ; Baochao JI ; Xianzhe LIU ; Xinzhan MAO ; Jianbing MA ; Xiangxiang SUN ; Jiying CHEN ; Yonggang ZHOU ; Jinliang WANG ; Weijun WANG ; Guoqiang ZHANG ; Ming NI
Chinese Journal of Orthopaedics 2025;45(12):803-811
Objective:To explore the safety and efficacy of intraosseous regional administration (IORA) of vancomycin for preventing infection in primary total knee arthroplasty (TKA).Methods:A total of 124 patients with knee osteoarthritis undergoing TKA between February 2024 and May 2024 at nine hospitals were enrolled. Preoperative infection prophylaxis involved either IORA (0.5 g vancomycin administered via intraosseous regional infusion before incision) or intravenous infusion (1 g vancomycin via peripheral vein). The IORA group included 15 males and 47 females with a median age of 66.5 years (range, 60.0-70.0 years), while the intravenous group included 14 males and 48 females with a median age of 66.0 years (range, 61.8-70.3 years) years. Intraoperative samples were collected including fat and synovium tissues after incision, before prosthesis placement, and after tourniquet release; distal femoral cancellous bone during femoral osteotomy; proximal tibial cancellous bone during tibial osteotomy; proximal intercondylar cancellous bone before prosthesis placement; and peripheral blood from non-infused arms at surgery initiation and after tourniquet release. Vancomycin concentrations were measured using liquid chromatography-tandem mass spectrometry. Vital sign changes were recorded from admission to 5~10 minutes post-IORA (IORA group) or post-incision (intravenous group). Follow-ups were conducted on postoperative day 1 and 3, and at 1 and 3 months, to document complications including IORA-related adverse events, periprosthetic joint infections, surgical site infections, red man syndrome, acute kidney injury, deep vein thrombosis and so on.Results:Vancomycin concentrations in bone, fat, and synovial tissue samples were significantly higher in the IORA group than in the intravenous group ( P<0.05), while vancomycin concentrations in blood samples were significantly lower in the IORA group than in the intravenous group ( P<0.05). Only 7.3%(41/558) of tissue samples in the IORA group had vancomycin concentrations below 2.0 μg/g (the minimum inhibitory concentration of vancomycin against coagulase-negative staphylococcus), compared to 59.3%(331/558) in the intravenous group (χ 2=11.285, P<0.001). In the intravenous group, 16.9%(21/124) of blood samples had vancomycin concentrations exceeding 15.0 mg/L (the threshold associated with a significantly increased risk of nephrotoxicity), while all concentrations in the IORA group were below this threshold, the difference was statistically significant (χ 2=22.943, P<0.001). There were no statistically significant difference ( P>0.05) in vital signs changes before and after vancomycin administration between the two groups. Two patients in the intravenous group experienced incision exudate, while no other related complications occurred in either group. Conclusions:Compared to the traditional intravenous infusion of 1 g vancomycin, intraosseous injection of a low dose (0.5 g) of vancomycin achieves higher local tissue concentrations in the knee joint with a lower incidence of adverse reactions and is safe for infection prophylaxis. Despite guidelines not recommending the routine use of vancomycin for preventing infection after primary TKA, intraosseous injection of 0.5 g vancomycin may be considered intraoperatively for primary TKA in the following scenarios: patients in medical institutions with a high prevalence of methicillin-resistant staphylococcus aureus (MRSA) infections, patients with potential preoperative MRSA colonization, or patients with cephalosporin allergy.
8.Clinical characteristics of 21 cases of nocardiosis and antimicrobial resistance of Nocardia strains in a hospital in Henan Province
Bing LIANG ; Wenqing YUAN ; Liang ZHAO ; Xinli ZHANG ; Chunxia HU ; Jinghua HU ; Haichao WANG
Chinese Journal of Infection and Chemotherapy 2025;25(2):127-131
Objective The clinical characteristics of 21 cases of nocardiosis were reviewed and antimicrobial resistance of Nocardia strains was analyzed in order to improve the accuracy of clinical diagnosis and treatment of nocardiosis.Methods Clinical data of patients diagnosed with nocardiosis in Zhoukou Central Hospital from 2019-2023 and the corresponding results of antimicrobial susceptibility testing were retrospectively analyzed to summarize the clinical characteristics and outcomes of patients.Results Overall,the 21 cases of nocardiosis included 9 males and 12 females,aged 2-91 years.Underlying disease was reported in 15 patients.Most common type of nocardiosis was pulmonary nocardiosis in 15 cases,followed by skin and soft tissue infection,pleurisy,lymphadenitis,and disseminated nocardiosis.Laboratory tests showed increased levels of WBC,neutrophils percentage,erythrocyte sedimentation rate,C-reactive protein,and procalcitonin.The 21 strains of Nocardia included 4 strains of Nocardia cyriacigeorgica,2 strains each of Nocardia brasiliensis,Nocardia abscessus,Nocardia asiatica,Nocardia otitidiscaviarum and Nocardia beijingensis,and 1 strain each of Nocardia puris,Nocardia asteroides,Nocardia farcinica,Nocardia pneumoniae,Nocardia amamiensis,and 2 strains of unclassified Nocardia.All of the Nocardia strains(100%)were susceptible to linezolid,amikacin,and trimethoprim-sulfamethoxazole,followed by various levels of susceptibility to cefotaxime,moxifloxacin,imipenem and ceftriaxone,and lower susceptibility rate to cefepime,minocycline,ciprofloxacin and clarithromycin.Antimicrobial susceptibility of Nocardia strains varied with different Nocardia species.Of the 21 patients,two were referred to other hospitals,another two died,two patients received unknown treatment,and the remaining 15 patients were improved after antibiotic treatment,including sulfonamides combined with other antibiotics in 11 cases,other antibiotics in 4 cases.Conclusions Immunocompromised patients or those with underlying diseases are more susceptible to nocardiosis.The clinical features are complex and diverse.Antimicrobial susceptibility of Nocardia strains varied with different Nocardia species.Accurate identification and antimicrobial susceptibility test are essential for prescribing effective antibiotic treatment.
9.Effect and mechanism of hydroxytyrosol on mouse chondrocyte injury induced by H2O2
Haichao YU ; Wenchao WANG ; Junzhao DUAN ; Hua WANG ; Xuesong ZHANG
Chinese Journal of Pharmacology and Toxicology 2025;39(3):183-190
OBJECTIVE To investigate the effect and underlying mechanism of hydroxytyrosol(HT)on mouse chondrocyte injury induced by oxidative stress.METHODS Mouse chondrocytes were incubated with varying concentrations of HT 0-400 μmol L-1 for 24 h,and the viability of the mouse chondrocytes was assessed using CCK-8 kit.An oxidative stress model of chondrocytes was estab-lished by the addition of H2O2 200 μmol L-1.The experimental groups included the cell control group,H2O2 group,and H2O2+HT 10,50 and 250 μmol·L-1 groups.After 24 h,the mRNA expression levels of interleukin-6(IL-6),cyclooxygenase-2(COX-2),prostaglandin E2(PGE2),inducible nitric oxide synthase(iNOS),matrix metalloproteinase-3(MMP-3),MMP-13,a disintegrin and metalloproteinase with throm-bospondin motifs-4(ADAMTS-4),ADAMTS-5,SRY-box transcription factor-9(SOX-9)and aggrecan(ACAN)in mouse chondrocytes were detected by real-time quantitative PCR,the intracellular reactive oxygen species(ROS)level in chondrocytes was measured with 2,7-dichlorodihydrofluorescein diace-tate(DCFH-DA)staining,while the mitochondrial membrane potential was evaluated using JC-1 staining.After 48 h,the protein expression levels of iNOS,COX-2,MMP-13,and type Ⅱ collagen(Col-2)in mouse chondrocytes were detected using Western blotting.RESULTS HT at concentrations≤350 μmol·L-1 had no significant effect on the survival of mouse chondrocytes.Compared with the cell control group,after 24 h,the mRNA expression levels of IL-6,COX-2,PGE2,iNOS,MMP-3,MMP-13,ADAMTS-4 and ADAMTS-5 in the chondrocytes of mice in the H2O2 group were increased,while the mRNA expression levels of SOX-9 and ACAN were decreased.Additionally,there was an elevation in the ROS level and a significant loss of mitochondrial membrane potential in the chondrocytes of mice.Compared with the H2O2 group,after treatment with HT 10,50 and 250 μmol·L-1,there were significant decreases in mRNA expression levels of IL-6,COX-2,PGE2,iNOS,MM P-3,MMP-13,ADAMTS-4 and ADAMTS-5,the mRNA expressions of SOX-9 and ACAN were increased,the ROS level was lowered.After treatment with HT 50 and 250 μmol L-1,the loss of mitochondrial membrane potential was ameliorated.Compared to the cell control group,the protein expressions of iNOS,COX-2 and MMP-13 were upregulated in the H2O2 group,while the protein expression of Col-2 was downregulated after 48 h.Compared to the H2O2 group,treatment with HT at concentrations of 10,50 and 250 μmol·L-1 resulted in decreased protein expressions of iNOS,COX-2 and MMP-13 in mouse chondrocytes,but the protein expression of Col-2 increased following treatment with HT 50 and 250 μmol L-1.CONCLUSION HT can ameliorate H2O2-induced chondrocyte injury by reducing intracellular ROS levels and alleviating the loss of mitochondrial membrane potential,suppressing the release of inflammatory cytokines,inhibiting catabolic processes,and promoting anabolic activities.
10.Study on the molecular mechanism of miR-886-5p targeting BAX to inhibit proliferation, migration and invasion of liver cancer cells
Shaopeng LIU ; Haichao LIU ; Hongxian YAN ; Minghui BAI ; Jixiang ZHANG ; Yingbo LI ; Chuang WANG ; Xiang ZOU
Chinese Journal of Hepatobiliary Surgery 2025;31(8):621-627
Objective:To investigate the molecular mechanism of miR-886-5p targeting BCL-2-associated X protein (BAX) to inhibit the proliferation, migration, and invasion of liver cancer cells.Methods:mRNA expression data of HCC patients were obtained from the Starbase database, including 370 liver cancer samples and 50 normal liver tissue samples adjacent to the cancer. Analyze the expression of miR-886-5p in the previously obtained data and investigate the relationship between miR-886-5p and BAX in liver cancer samples. After transfection of the corresponding plasmids into Huh7 and HepG2 cells, the following groups were established. Analyze the interaction between miR-886-5p and BAX in vitro, detect the protein expression by Western blotting, and verify the targeting relationship between the two by dual luciferase reporter gene assay.Results:Starbase database analysis found that the standardized expression level of miR-886-5p in 370 liver cancer samples was lower than that in normal liver tissue samples (0.12±0.07 vs. 0.73±0.27, t=-15.71, P<0.001), and the expression level of miR-886-5p was positively correlated with the expression level of BAX ( r=0.152, P=0.003). qRT-PCR analysis showed that the expression level of miR-886-5p in HL-7702 cells was higher than that in Huh7 (4.57±0.06 vs. 1.61±0.40, t=32.48) and HepG2 (4.57±0.06 vs. 1.03±0.13, t=143.9), and the expression level of BAX in HL-7702 cells was higher than that in Huh7 (4.01±0.12 vs. 1.28±0.09, t=82.20) and HepG2 (4.01±0.12 vs. 1.30±0.11, t=80.76), the differences were statistically significant (all P<0.001). The proliferation, migration, and invasion abilities of Huh7 and HepG2 cells decreased after transfection with miR-886-5p mimics, while the expression levels of BAX at the mRNA and protein levels increased. However, after inhibiting the expression of miR-886-5p, the above indicators of cells were the opposite, and the dif-ferences were statistically significant (all P<0.05). The viability, EdU positivity rate, cell migration rate, and number of transmembrane cells in the miR-886-5p+ BAX group were lower than those in the BAX group, and the relative expression levels of miR-886-5p, BAX mRNA, and BAX protein were higher than those in the BAX group. However, the above indicators in the Sponge+ BAX group showed opposite trends, and all differences were statistically significant (all P<0.05). There was a targeted binding site between miR-886-5p and BAX. Conclusion:Both miR-886-5p and BAX are downregulated in liver cancer, and miR-886-5p inhibits the proliferation, migration, and invasion of liver cancer cells by targeting BAX.


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