1.Effect of Acupuncture at “Zhibian (BL 54)-to-Shuidao (ST 28)” on Key Factors of Endogenous Exogenous Apoptotic Pathways in Asthenospermia Model Mice
Jianheng HAO ; Jia REN ; Boya CHANG ; Haijun WANG ; Laixi JI
Journal of Traditional Chinese Medicine 2024;65(1):86-93
ObjectiveTo observe the effect of acupuncture “Zhibian (BL 54)-to-Shuidao (ST 28)” on the reproductive function of asthenospermia model mice and to explore the possible mechanism. MethodsForty-two male C57BL/6 mice were randomly divided into blank group, model group, and acupuncture group, with 14 mice in each group. Cyclophosphamide 30 mg/(kg·d) was injected intraperitoneally for 7 days to establish model of asthenospermia for the model group and the acupuncture group, while 0.9% sodium chloride solution 10 ml/(kg·d) was injected intraperitoneally for 7 days in the blank group. After successful modeling, mice in the acupuncture group received acupuncture at “Zhibian (BL 54)-to-Shuidao (ST 28)” once a day for 20 minutes, 6 times a week for 3 weeks; the remaining two groups were fixed without acupuncture. Daily observations were made on the general conditions of mice in all groups, and changes in body weight after intervention were recorded. On the next day after completing the treatment, 6 male mice selected randomly from each group to test the sperm quality as well as testicular and epididymal weights, and calculate the corresponding indices; ELISA was used to test the levels of testosterone (T), follicle-stimulating hormone (FSH), and luteinizing hormone (LH) in serum; HE staining and TUNEL staining were performed to observe the pathological morphology and apoptosis of testicular and epididymal tissues; fluorescence quantitative PCR and western blot were used to detect changes in the expression of apoptosis-related factors (Fas), Fas-associated death domain protein (FADD), B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), and cysteine-aspartic acid protease (caspase)-3 mRNA and protein in testicular tissue. The remaining 8 male mice in each group were housed with estrus-cycling mice of the same strain at 1∶1 ratio, and the pregnancy rate and number of embryos per litter in each group were determined after mating. ResultsIn comparison with the blank group, mice in the model group exhibited reduced body weight, decreased testicular mass, testicular index, epididymal mass, and epididymal index. Additionally, there was a decrease in total sperm count, sperm motility, and sperm viability. Serum levels of T, FSH, and LH were reduced. The apoptosis rate increased, and the expression levels of Fas, FADD, Bax, and Caspase-3 mRNA and proteins were elevated, while Bcl-2 mRNA and protein expression levels decreased (P<0.01). Pathological abnormalities were observed in testicular and epididymal tissues, with disrupted arrangement of seminiferous tubules and a decreased number of spermatogenic cells within the tubular lumen. Furthermore, the pregnancy rate and the number of embryos per litter decreased significantly after mating (P<0.01). In comparison with the model group, mice in the acupuncture group showed improvements in testicular mass, testicular index, epididymal mass, epididymal index, total sperm count, sperm motility, and sperm viability. Serum levels of T, FSH, and LH increased. The apoptosis rate decreased, and the expression levels of Fas, FADD, Bax, and Caspase-3 mRNA and proteins decreased, while Bcl-2 mRNA and protein expression levels increased (P<0.05 or P<0.01). Morphological improvements were observed in testicular and epididymal tissues, with a compact arrangement of seminiferous tubules and an increased number of spermatogenic cells within the tubular lumen. Furthermore, the pregnancy rate and the number of embryos per litter increased significantly after mating (P<0.01). ConclusionAcupuncture “Zhibian (BL 54)-to-Shuidao (ST 28)” can improve testicular tissue apoptosis and enhance reproductive function in a mouse model of asthenospermia. Its mechanism may be associated with the modulation of key factors in the extrinsic membrane receptor pathway (Fas-mediated pathway) and the intrinsic mitochondrial pathway (Bcl-2/Bax-regulated pathway) in testicular tissue.
2.XEN drainage tube implantation combined with mitomycin C for open angle glaucoma
Rumeng ZHAO ; Huiling CUI ; Jing REN ; Di WANG ; Haijun LI
International Eye Science 2024;24(6):965-969
AIM: To investigate the clinical efficacy and safety of XEN drainage tube implantation combined with mitomycin C(MMC)for open angle glaucoma(OAG).METHODS:A total of 37 OAG patients(37 eyes)were retrospectively included, grouped by anti-glaucoma surgical treatment as the first choice or not, with 17 patients(17 eyes)in the group with primary surgical treatment, and 20 patients(20 eyes)in the group with the numerous surgeries. The intraocular pressure(IOP), kinds of IOP-lowering drugs, and complications were collected and analyzed in 1 a follow-up postoperatively.RESULTS:Upon the one-year follow-up, IOP had decreased from 27.56±9.94, 28.43±14.18 mmHg to 15.16±3.65, 17.18±5.83 mmHg in both groups, respectively, representing a reduction of 55.01% and 60.43%, respectively(t=4.863, P<0.001; t=3.255, P=0.004). The IOP at various follow up points were lower than preoperative points in both groups(Ftime=6.876, Ptime<0.001; Fintergroup=0.242, Pintergroup=0.626; Ftime×intergroup=0.959, Ptime×intergroup=0.458). The complete success rate was 47% and 45%, the qualified success rate was 76% and 75%(Z=-0.115, P=0.909), respectively, and there was no significant difference in the cumulative survival rate between two groups(χ2=0.042, P=0.838; χ2=0.004, P=0.949). At the last follow up, IOP-lowering drugs were reduced from 3(2, 3)to 1(0, 2)in both groups(Z=-3.289, -3.796, all P<0.001), and no significant difference between groups(Z=-0.581, P=0.561). Hypotony is the most common short-term complications, anterior chamber haemorrhage followed, while, filtering bleb encapsulation is the most frequent long-term complication, no serious complications occurred, but with XEN drainage tube exposure in 1 eye and drop in 1 eye.CONCLUSION:Initial XEN drainage tube implantation combined with MMC and numerous glaucoma surgeries are both safe and effective treatment for OAG patients, while the incidence of filtering bleb encapsulation is high in those with numerous glaucoma surgeries.
3.Expression of alcohol dehydrogenase 1 A and vascular endothelial growth factor-A in hepatocellular carcinoma
Lele XUE ; Yuying JING ; Kaige YANG ; Liwen QI ; Tong WU ; Yilin REN ; Yichen ZANG ; Lianghai WANG ; Haijun ZHANG ; Weihua LIANG ; Jianming HU
Acta Universitatis Medicinalis Anhui 2024;59(3):499-505
Objective To investigate the expression,synergistic relationship and clinical significance of alcohol de-hydrogenase(ADH1A)and vascular endothelial growth factor-A(VEGFA)in hepatocellular carcinoma(HCC).Methods The expression and correlation of ADH1A and VEGFA in HCC and adjacent normal tissues were ana-lyzed by GEPIA.TCGA and GSEA were used to analyze the pathway of ADH1A in HCC.The clinical and patho-logical data of 84 patients with HCC were collected,and 54 patients with paracancer normal tissue samples were se-lected as controls to analyze the correlation between ADH1A and VEGFA and clinicopathological parameters of HCC.Immunohistochemistry was used to detect the protein expression of ADH1A and VEGFA in cases and con-trols,and the correlation between the expression of ADH1A and VEGFA and the clinical progression and prognosis of patients with HCC was analyzed based on clinical pathological parameters and Kaplan-Meier.Results Bioinfor-matics analysis found that ADH1A was low-expressed in HCC and VEGFA was highly expressed in HCC,and there was a negative correlation between the two(P<0.001);immunohistochemical detection results showed that the expression of ADH1A in HCC tissue was lower than that in normal tissue adjacent to cancer(P<0.01)while the expression rate of VEGFA in HCC tissue was significantly higher than that of normal tissue adjacent to cancer(P<0.01);The recurrence rate of vascular thrombus and HCC patients in HCC group with high expression of ADH1A was lower(P<0.05).The proportion of tumor diameter>5 cm,high TNM stage,microsatellite and G2-G3 dif-ferentiation in HCC tissues in VEGFA high expression group was higher(P<0.05).Kaplan-Meier survival analy-sis showed that patients with high ADH1A expression and low VEGFA expression had a higher five-year survival rate.Conclusion Low expression of ADH1A and high expression of VEGFA in tumor tissues of patients with HCC indicate tumor progression and can be used as one of the prognostic evaluation indicators for patients with HCC.
4.Chinese expert consensus on the diagnosis and treatment of traumatic supraorbital fissure syndrome (version 2024)
Junyu WANG ; Hai JIN ; Danfeng ZHANG ; Rutong YU ; Mingkun YU ; Yijie MA ; Yue MA ; Ning WANG ; Chunhong WANG ; Chunhui WANG ; Qing WANG ; Xinyu WANG ; Xinjun WANG ; Hengli TIAN ; Xinhua TIAN ; Yijun BAO ; Hua FENG ; Wa DA ; Liquan LYU ; Haijun REN ; Jinfang LIU ; Guodong LIU ; Chunhui LIU ; Junwen GUAN ; Rongcai JIANG ; Yiming LI ; Lihong LI ; Zhenxing LI ; Jinglian LI ; Jun YANG ; Chaohua YANG ; Xiao BU ; Xuehai WU ; Li BIE ; Binghui QIU ; Yongming ZHANG ; Qingjiu ZHANG ; Bo ZHANG ; Xiangtong ZHANG ; Rongbin CHEN ; Chao LIN ; Hu JIN ; Weiming ZHENG ; Mingliang ZHAO ; Liang ZHAO ; Rong HU ; Jixin DUAN ; Jiemin YAO ; Hechun XIA ; Ye GU ; Tao QIAN ; Suokai QIAN ; Tao XU ; Guoyi GAO ; Xiaoping TANG ; Qibing HUANG ; Rong FU ; Jun KANG ; Guobiao LIANG ; Kaiwei HAN ; Zhenmin HAN ; Shuo HAN ; Jun PU ; Lijun HENG ; Junji WEI ; Lijun HOU
Chinese Journal of Trauma 2024;40(5):385-396
Traumatic supraorbital fissure syndrome (TSOFS) is a symptom complex caused by nerve entrapment in the supraorbital fissure after skull base trauma. If the compressed cranial nerve in the supraorbital fissure is not decompressed surgically, ptosis, diplopia and eye movement disorder may exist for a long time and seriously affect the patients′ quality of life. Since its overall incidence is not high, it is not familiarized with the majority of neurosurgeons and some TSOFS may be complicated with skull base vascular injury. If the supraorbital fissure surgery is performed without treatment of vascular injury, it may cause massive hemorrhage, and disability and even life-threatening in severe cases. At present, there is no consensus or guideline on the diagnosis and treatment of TSOFS that can be referred to both domestically and internationally. To improve the understanding of TSOFS among clinical physicians and establish standardized diagnosis and treatment plans, the Skull Base Trauma Group of the Neurorepair Professional Committee of the Chinese Medical Doctor Association, Neurotrauma Group of the Neurosurgery Branch of the Chinese Medical Association, Neurotrauma Group of the Traumatology Branch of the Chinese Medical Association, and Editorial Committee of Chinese Journal of Trauma organized relevant experts to formulate Chinese expert consensus on the diagnosis and treatment of traumatic supraorbital fissure syndrome ( version 2024) based on evidence of evidence-based medicine and clinical experience of diagnosis and treatment. This consensus puts forward 12 recommendations on the diagnosis, classification, treatment, efficacy evaluation and follow-up of TSOFS, aiming to provide references for neurosurgeons from hospitals of all levels to standardize the diagnosis and treatment of TSOFS.
5.Diagnosis and treatment strategy of penoscrotal avulsion injury based on AAST penoscrotal injury grade
Xiang WAN ; Xiaomin REN ; Dachao ZHENG ; Minkai XIE ; Jianshu NI ; Zhong WANG ; Bin XU ; Haijun YAO
Journal of Modern Urology 2023;28(7):573-575
【Objective】 To explore the emergency treatment of penoscrotal avulsion injury based on the American Association for Surgery and Trauma (AAST) penoscrotal injury grade. 【Methods】 Data of 30 patients with penoscrotal avulsion injury treated in our hospital with in-situ suture, skin grafting or skin flap during Oct.2003 and Dec.2017 were reviewed. 【Results】 Among the 30 patients, 29 received emergency surgery, including in-situ suturein 15 grade Ⅰ-Ⅲ cases, skin graft in 8 grade Ⅳ-Ⅴ cases, and skin flap in 6 cases;1 case received delayed operation due to wound infection on admission. In the perioperative period,25 cases had more than 90% wound healing, 3 cases had 70% wound healing after wound dressing change, and 2 cases had complete necrosis. Second-stage skin graft yielded satisfactory penoscrotal appearance. 【Conclusion】 According to the specific conditions of patients, reasonable surgical methods can be selected. For grade Ⅰ-Ⅲ patients, in-situ suture can be used, while for grade Ⅳ-Ⅴ patients, wound condition, age, fertility and other factors should be taken into consideration so as to preserve the function of testis to the maximum extent.
6.Comparison of different ureteral length measurement methods in the indwelling of double-J stent after ureteroscopy
Yongchuan WANG ; Yuhang BI ; Anji REN ; Xiaolu LUN ; Jing DU ; Haijun ZHOU ; Kai WANG ; Zhiyong YU ; Wenshun LIU ; Teng SHEN ; Yi SHAO
Journal of Modern Urology 2023;28(2):106-110
【Objective】 To investigate the application of different ureteral length measurement methods in the indwelling of double-J stent. 【Methods】 Clinical data of 260 patients with double-J stent indwelling after ureteroscopic surgery during Jul.2018 and Dec.2020 were prospectively analyzed. The patients were randomly divided into height calculation group, CT measurement group, KUB group and ureteroscopic measurement group. The length of ureter was calculated accordingly and the appropriate length of double-J stent was selected. KUB was performed on the first day after operation and before extubation to determine the position of double-J stent. The patients completed the ureteral stent-related symptom questionnaire (USSQ), urinary symptom score, lower urinary tract symptom (LUTS) score, pain score, hematuria score, and quality of life score before and after double-J catheter placement. 【Results】 There were no significant differences in age, gender, height, side of stent and urinary symptom score among the four groups (P>0.05). The average lengths of the ureters measured by the four methods were (21.5±1.0) cm, (21.5±1.8) cm, (23.8±1.3) cm and (21.7±1.8) cm, respectively. There were no significant differences among the height calculation group, CT measurement group and ureteroscope group, but there was significant difference between the three groups and the KUB group. The ideal ureteral stent length indwelling ratio in the ureteroscopic group was 76.9%, which was better than that in the other three groups. Postoperative indwelling time was 7-42 d (mean 29.8 d). The USSQ score of the ureteroscopic group before extubation was (14.1±1.5), which was lower than that of the other three groups (P<0.05). The ureteroscopic group was better than the other three groups in the comparison of frequency and urgency of urination, nocturia, hematuria, quality of life score, and pain score (P<0.05). 【Conclusion】 Intraoperative ureteroscopic measurement of the ureteral length is a simple and feasible method in guiding the indwelling of double-J stent to reduce ureteral stent related symptoms.
7.Inhibitory effect of specnuezhenide on high glucose-induced human retinal microvascular endothelial cell injury and its mechanism
Qian LIU ; Xiaomei FENG ; Changgeng LIU ; Haijun LI ; Xiaoyuan YANG ; Jing REN ; Ying ZHANG
Chinese Journal of Experimental Ophthalmology 2023;41(4):312-320
Objective:To investigate the effect of specnuezhenide on high glucose-induced human retinal microvascular endothelial cells (hRMECs) injury and its mechanism.Methods:The hRMECs were divided into a normal control group cultured in a culture medium containing 5.5 mmol/L glucose, a hypertonic group cultured in a culture medium containing 5.5 mmol/L glucose + 24.5 mmol/L mannitol, a high glucose group cultured in a culture medium containing 30 mmol/L glucose, as well as high glucose+ low-, medium-, and high-dose specnuezhenide groups cultured in culture media containing 30 mmol/L glucose + 25, 50, 100 μmol/L specnuezhenide for 24 hours, respectively.In addition, hRMECs were divided into a high glucose+ small interfering RNA-negative control (si-NC) group cultured in a culture medium containing 30 mmol/L glucose, a high glucose+ si-forkhead box O4 (FOXO4) group cultured in a culture medium containing 30 mmol/L glucose, a high glucose+ specnuezhenide+ pcDNA group cultured in a culture medium containing 100 μmol/L specnuezhenide + 30 mmol/L glucose, and a high glucose+ specnuezhenide+ pcDNA-FOXO4 group cultured in a culture medium containing 100 μmol/L specnuezhenide+ 30 mmol/L glucose for 24 hours after transfection by corresponding reagents.Cell apoptosis was detected by flow cytometry.The malondialdehyde (MDA) concentration and superoxide dismutase (SOD) activity in cells were detected by the thiobarbituric acid method and xanthine oxidase method, respectively.The concentrations of interleukin (IL)-1β and tumor necrosis factor (TNF)-α in the cell culture supernatant were detected by enzyme linked immunosorbent assay.The relative expression level of FOXO4 protein in cells was determined by Western blot.Results:The apoptosis rates of normal control group, hypertonic group, high glucose group, high glucose+ low-, medium- and high-dose specnuezhenide groups were (7.32±0.72)%, (7.44±0.70)%, (23.96±1.32)%, (19.84±1.09)%, (14.13±0.85)% and (9.84±0.70)%, respectively.There were significant differences in cell apoptosis rate, MDA concentration, SOD activity, the concentration of IL-1β, the concentration of TNF-α, and the relative expression level of FOXO4 protein among the six groups ( F=498.545, 1 186.693, 516.629, 654.247, 638.238, 472.655; all at P<0.001). Compared with high glucose group, the apoptosis rate, MDA concentration, IL-1β and TNF-α concentration, FOXO4 protein expression level were significantly decreased in high glucose+ low-, medium- and high-dose specnuezhenide groups, and SOD activity was significantly increased in a dose-dependent manner.Compared with high glucose+ si-NC group, the expression level of FOXO4 protein, cell apoptosis rate, MDA concentration, IL-1β and TNF-α mass concentrations were decreased in high glucose + si-FOXO4 group, while the SOD activity was increased.Compared with high glucose+ specnuezhenide+ pcDNA group, the apoptosis rate, MDA concentration, IL-1β and TNF-α concentrations, FOXO4 protein expression level of hRMECs in high glucose+ specnuezhenide+ pcDNA-FOXO4 group were significantly increased, and SOD activity was significantly decreased (all at P<0.05). Conclusions:Specnuezhenide can protect hRMECs from high glucose-induced apoptosis, oxidative stress and inflammatory response by down-regulating FOXO4.
8.Clinical characteristics of 272 437 patients with different histopathological subtypes of primary esophageal malignant tumors
Lidong WANG ; Liuyu LI ; Xin SONG ; Xueke ZHAO ; Fuyou ZHOU ; Ruihua XU ; Zhicai LIU ; Aili LI ; Jilin LI ; Xianzeng WANG ; Liguo ZHANG ; Fangheng ZHU ; Xuemin LI ; Weixing ZHAO ; Guizhou GUO ; Wenjun GAO ; Xiumin LI ; Lixin WAN ; Jianwei KU ; Quanxiao XU ; Fuguo ZHU ; Aifang JI ; Huixiang LI ; Jingli REN ; Shengli ZHOU ; Peinan CHEN ; Qide BAO ; Shegan GAO ; Haijun YANG ; Jinchang WEI ; Weimin MAO ; Zhanqiang HAN ; Zhiwei CHANG ; Yingfa ZHOU ; Xuena HAN ; Wenli HAN ; Lingling LEI ; Zongmin FAN ; Ran WANG ; Yuanze YANG ; Jiajia JI ; Yao CHEN ; Zhiqiang LI ; Jingfeng HU ; Lin SUN ; Yajie CHEN ; Helin BAI ; Duo YOU
Chinese Journal of Internal Medicine 2022;61(9):1023-1030
Objective:To characterize the histopathological subtypes and their clinicopathological parameters of gender and onset age by common, rare and sparse primary esophageal malignant tumors (PEMT).Methods:A total of 272 437 patients with PEMT were enrolled in this study, and all of the patients were received radical surgery. The clinicopathological information of the patients was obtained from the database established by the State Key Laboratory of Esophageal Cancer Prevention & Treatment from September 1973 to December 2020, which included the clinical treatment, pathological diagnosis and follow-up information of esophagus and gastric cardia cancers. All patients were diagnosed and classified by the criteria of esophageal tumor histopathological diagnosis and classification (2019) of the World Health Organization (WHO). The esophageal tumors, which were not included in the WHO classification, were analyzed separately according to the postoperative pathological diagnosis. The χ 2 test was performed by the SPSS 25.0 software on count data, and the test standard α=0.05. Results:A total of 32 histopathological types were identified in the enrolled PEMT patients, of which 10 subtypes were not included in the WHO classification. According to the frequency, PEMT were divided into common (esophageal squamous cell carcinoma, ESCC, accounting for 97.1%), rare (esophageal adenocarcinoma, EAC, accounting for 2.3%) and sparse (mainly esophageal small cell carcinoma, malignant melanoma, etc., accounting for 0.6%). All the common, rare, and sparse types occurred predominantly in male patients, and the gender difference of rare type was most significant (EAC, male∶ female, 2.67∶1), followed with common type (ESCC, male∶ female, 1.78∶1) and sparse type (male∶ female, 1.71∶1). The common type (ESCC) mainly occurred in the middle thoracic segment (65.2%), while the rare type (EAC) mainly occurred in the lower thoracic segment (56.8%). Among the sparse type, malignant melanoma and malignant fibrous histiocytoma were both predominantly located in the lower thoracic segment (51.7%, 66.7%), and the others were mainly in the middle thoracic segment.Conclusion:ESCC is the most common type among the 32 histopathological types of PEMT, followed by EAC as the rare type, and esophageal small cell carcinoma and malignant melanoma as the major sparse type, and all of which are mainly occur in male patients. The common type of ESCC mainly occur in the middle thoracic segment, while the rare type of EAC mainly in the lower thoracic segment. The mainly sparse type of malignant melanoma and malignant fibrous histiocytoma predominately occur in the lower thoracic segment, and the remaining sparse types mainly occur in the middle thoracic segment.
9.Clinical guideline for spinal reconstruction of osteoporotic thoracolumbar fracture in elderly patients (version 2022)
Tao SUI ; Jian CHEN ; Zhenfei HUANG ; Zhiyi HU ; Weihua CAI ; Lipeng YU ; Xiaojian CAO ; Wei ZHOU ; Qingqing LI ; Jin FAN ; Qian WANG ; Pengyu TANG ; Shujie ZHAO ; Lin CHEN ; Zhiming CUI ; Wenyuan DING ; Shiqing FENG ; Xinmin FENG ; Yanzheng GAO ; Baorong HE ; Jianzhong HUO ; Haijun LI ; Jun LIU ; Fei LUO ; Chao MA ; Zhijun QIAO ; Qiang WANG ; Shouguo WANG ; Xiaotao WU ; Nanwei XU ; Jinglong YAN ; Zhaoming YE ; Feng YUAN ; Jishan YUAN ; Jie ZHAO ; Xiaozhong ZHOU ; Mengyuan WU ; Yongxin REN ; Guoyong YIN
Chinese Journal of Trauma 2022;38(12):1057-1066
Osteoporotic thoracolumbar fracture in the elderly will seriously reduce their quality of life and life expectancy. For osteoporotic thoracolumbar fracture in the elderly, spinal reconstruction is necessary, which should comprehensively consider factors such as the physical condition, fracture type, clinical characteristics and osteoporosis degree. While there lacks relevant clinical norms or guidelines on selection of spinal reconstruction strategies. In order to standardize the concept of spinal reconstruction for osteoporotic thoracolumbar fracture in the elderly, based on the principles of scientificity, practicality and progressiveness, the authors formulated the Clinical guideline for spinal reconstruction of osteoporotic thoracolumbar fracture in elderly patients ( version 2022), in which suggestions based on evidence of evidence-based medicine were put forward upon 10 important issues related to the fracture classification, non-operative treatment strategies and surgical treatment strategies in spinal reconstruction after osteoporosis thoracolumbar fracture in the elderly, hoping to provide a reference for clinical treatment.
10.Research Progress on Changes and Interaction Mechanisms of Aging Articular Cartilage and Subchondral Bone
Pengling REN ; Haijun NIU ; He GONG ; Yubo FAN
Journal of Medical Biomechanics 2020;35(2):E253-E258
Aging is a major risk factor for diseases such as osteoarthritis (OA) and osteoporosis. However, they are not necessarily the results of aging, and the relationship between changes in bone and cartilage associated with aging and disease progression is still unclear. Studies have shown that the development and progression of OA is not a simple cartilage wear process, while its occurrence involves complex biological, chemical and mechanical changes in the tissues of the entire joint, especially the interaction of mechanics and biochemistry between cartilage and subchondral bone. Aging contributes to the occurrence and development of OA, but it is not the cause of OA. Changes associated with aging provide a foundation for OA to start, making joints more susceptible to other factors such as abnormal biomechanics and biochemistry, thereby promoting the development of OA. Therefore, understanding the basic mechanisms by which aging affects joint tissue may provide new targets for slowing or preventing the development of OA. In this paper, the related research progresses are reviewed from three aspects, i.e. age-related changes in cartilage and subchondral bone, mechanical conduction and angiogenesis.


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