1.Efficacy Connotation and Mechanisms of Shudi Qiangjin Pills Against Steroid-induced Osteonecrosis of Femoral Head Based on "Disease-Syndrome-Formula" Association Network
Zhijian CHEN ; Suya ZHANG ; Longlong DING ; Guixin ZHANG ; Bo LIU ; Baohong MI ; Yanqiong ZHANG ; Na LIN ; Weiheng CHEN ; Chunzhu GONG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(2):88-99
ObjectiveTo elucidate the efficacy connotation of Shudi Qiangjin pills (SQP) against liver and kidney deficiency in steroid-induced osteonecrosis of femoral head (SONFH) from the perspective of the "disease-syndrome-formula" association and to clarify the underlying mechanisms based on in vivo and in vitro experiment validation. MethodsThe chemical components and the corresponding putative targets of SQP were collected from the Integrative Pharmacology-based Research Platform of Traditional Chinese Medicine (TCMIP) v2.0, the Encyclopedia of Traditional Chinese Medicine (ETCM) v2.0, and HERB databases. The SONFH-related genes were identified based on the differential expression profiles of peripheral blood of patients with SONFH compared to the healthy volunteers, and the disease phenotype-related targets were collected from the TCMIP v2.0 database. Then, the interaction network of "SONFH-related genes and candidate targets of SQP" was constructed based on "gene-gene interaction information", and the major network targets were screened by calculating the topological characteristic values of the network followed by the functional mining according to the Kyoto Encyclopedia of Genes and Genomes (KEGG) database and the SoFDA database. After that, the SONFH rat model was prepared by lipopolysaccharide combined with methylprednisolone injection, and 2.5, 5, 7.5 g·kg-1 SQP (once per day, equivalent to 1, 2, and 3 times the clinical equivalent dose, respectively) or 7.3×10-3 g·kg-1 of alendronate sodium (ALS, once per week, equivalent to the clinical equivalent dose) was given for 8 weeks. The effect characteristics of SQP and ALS in the treatment of SONFH were evaluated by micro-computed tomography scanning, hematoxylin and eosin staining, alkaline phosphatase (ALP) staining, immunohistochemical staining, enzyme-linked immunosorbent assay, and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling(TUNEL)staining, and a comparative efficacy analysis was conducted with ALS. In addition, SONFH cell models were prepared by dexamethasone stimulation of osteoblasts, and the intervention was carried out with the medicated serum of SQP at the aforementioned three doses. Cell counting kit-8, ALP staining, ALP activity assay, alizarin red staining, and flow cytometry were employed to investigate the regulatory effect of SQP on osteoblasts. The expression levels of osteogenesis-related proteins and key factors of the target signaling axis were detected by quantitative real-time polymerase chain reaction and Western blot. ResultsThe network analysis results demonstrated that the candidate targets of SQP primarily exerted their therapeutic effects through key signaling pathways, including phosphoinositide 3-kinase(PI3K)/protein kinase B(Akt), lipid metabolism and atherosclerosis, prolactin, chemokines, and neurotrophic factors pathways. These pathways were significantly involved in critical biological processes such as muscle and bone metabolism and the regulation of the "neuro-endocrine-immune" network, thereby addressing both modern medical symptoms (e.g., delayed skeletal maturation and recurrent fractures) and traditional Chinese medicine (TCM) symptoms (e.g., fatigue, aversion to cold, cold limbs, and pain in the limbs and joints in patients with SONFH characterized by liver and kidney deficiency syndrome. Among these pathways, the PI3K/Akt signaling pathway exhibited the highest degree of enrichment. The in vivo experimental results demonstrated that starting from the 4th week after modeling, the modeling group exhibited a significant reduction in body weight compared to the control group (P<0.05). After six weeks of treatment, all dosage groups of SQP showed significantly higher body weights compared to the model group (P<0.01). Compared with the normal group, the model group exhibited significant decreases in bone mineral density (BMD), bone volume fraction (BV/TV), trabecular number (Tb.N), osteocalcin (OCN), alkaline phosphatase (ALP) levels in femoral head tissue, and serum bone-specific alkaline phosphatase (BALP) (P<0.01), along with significant increases in trabecular separation (Tb.Sp), empty lacunae rate in tissue, and apoptosis rate (P<0.01). In comparison to the model group, the SQP intervention groups showed significant improvements in BMD, BV/TV and Tb.N (P<0.01), significant reductions in Tb.Sp, empty lacunae rate and apoptosis rate (P<0.05), and significant increases in protein levels of OCN and ALP as well as BALP content (P<0.05). The in vitro experimental results revealed that all dosage groups of SQP medicated serum showed no toxic effects on osteoblast. Compared with the normal group, the model group displayed significant suppression of osteoblast proliferation activity, ALP activity, and calcified nodule formation rate (P<0.01), significant decreases in mRNA transcription levels of OCN and Runt-related transcription factor 2 (RUNX2) (P<0.01), significant reductions in protein content of osteopontin (OPN), typeⅠ collagen (ColⅠ)A1, B-cell lymphoma-2 (Bcl-2), PI3K, and phosphorylated (p)-Akt (P<0.01), and a significant increase in apoptosis rate (P<0.01). Compared with the model group, the SQP medicated serum intervention groups exhibited significant increases in proliferation activity, ALP activity, calcified nodule formation rate, mRNA transcription levels of OCN and RUNX2, and protein content of OPN, ColⅠA1, Bcl-2, PI3K, and p-Akt (P<0.05), along with a significant decrease in apoptosis rate (P<0.01). ConclusionSQP can effectively reduce the disease severity of SONFH with liver and kidney deficiency syndrome and improve bone microstructure, with the therapeutic effects exhibiting a dose-dependent manner. The mechanism may be related to its regulation of key processes such as muscle and bone metabolism and the correction of imbalances in the "neuro-endocrine-immune" network, thereby promoting osteoblast differentiation and inhibiting osteoblast apoptosis. The PI3K/Akt signaling axis is likely one of the key pathways through which this formula exerts its effects.
2.Current Status and Strategies of Integrated Traditional Chinese and Western Medicine in the Treatment of Helicobacter pylori Infection
Xuezhi ZHANG ; Xia DING ; Zhen LIU ; Hui YE ; Xiaofen JIA ; Hong CHENG ; Zhenyu WU ; Xudong TANG
Journal of Traditional Chinese Medicine 2026;67(1):111-116
This paper systematically reviews the current status of integrated traditional Chinese and western medicine in the treatment of Helicobacter pylori (Hp) infection, as well as recent progress in clinical and basic research both in China and internationally. It summarizes the advantages of traditional Chinese medicine (TCM) in Hp infection management, including improving Hp eradication rates, enhancing antibiotic sensitivity, reducing antimicrobial resistance, decreasing drug-related adverse effects, and ameliorating gastric mucosal lesions. These advantages are particularly evident in patients who are intolerant to bismuth-containing regimens, those with refractory Hp infection, and individuals with precancerous gastric lesions. An integrated, whole-process management approach and individualized, staged comprehensive treatment strategies combining TCM and western medicine are proposed for Hp infection. Future prevention and control of Hp infection should adopt an integrative Chinese-western medical strategy, emphasizing prevention, strengthening primary care, implementing proactive long-term monitoring, optimizing screening strategies, and advancing the development of novel technologies and mechanistic studies of Chinese herbal interventions. These efforts aim to provide a theoretical basis and practical pathways for the establishment and improvement of Hp infection prevention and control systems.
3.Study on the new workflow of PIVAS based on intelligent auxiliary devices
Haiwen DING ; Sheng LIU ; Zhaolin CHEN ; Liqin TANG ; Tong TONG
China Pharmacy 2026;37(1):99-104
OBJECTIVE To build a new workflow of pharmacy intravenous admixture services (PIVAS), effectively connect intelligent equipment, and promote the intelligent development of PIVAS. METHODS Based on intelligent auxiliary equipment, PIVAS workflow was optimized, and a process-oriented model was established. This model integrated intelligent prescription review (automatic prescription review+manual intervention mode), intelligent labeling, intelligent allocation, intelligent sorting, and finished infusion quality inspection system. Furthermore, an assessment was conducted to examine unreasonable medical order rate of intelligent prescription review, the working efficiency and error rate of intelligent labeling machine and intelligent sorting machine, and the dispensing efficiency and accuracy of intelligent dispensing robot. RESULTS Under the intelligent prescription review mode, the rate of unreasonable medical orders decreased from 0.157% to 0.050% (P<0.05); automatic labeling efficiency reached 21.7 sheets/min, surpassing the manual labeling efficiency of 13.8 sheets/min (P<0.05), and the daily labeling error rate decreased from 6.1‰ to 2.5‰ (P<0.05). Simultaneously operating two dispensing robots significantly improved the efficiency of batch dispensing and reduced the residual amount of liquid medicine (P<0.05); additionally, a quality testing system for finished infusion was established, involving appearance, Tyndall effect, insoluble particles, turbidity, absorbance, pH and osmotic pressure, to ensure the quality of finished infusion and reduce the risk of infusion. CONCLUSIONS The new process of PIVAS connected with intelligent devices in our hospital can improve work efficiency, reduce dispensing errors, ensure the quality of finished infusion, and improve the level of pharmaceutical care.
4.Traditional Chinese Medicine Treats Esophageal Cancer via PI3K/Akt Signaling Pathway: A Review
Wei GUO ; Chen PENG ; Yikun WANG ; Zixuan YU ; Jintao LIU ; Jing DING ; Yijing LI ; Hongxin SUN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):302-311
Esophageal cancer (EC) is a highly prevalent malignant tumor in China. The phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway, as one of the key oncogenic pathways, can promote the cell cycle progression, proliferation, migration, and invasion, induce chemoresistance, and inhibit apoptosis and autophagy of EC cells. Traditional Chinese medicine (TCM), with the advantages of targeting multiple points with multiple components to delay cancer progression, can target the PI3K/Akt signaling pathway for EC treatment. This article preliminarily discusses the molecular mechanism and role of the PI3K/Akt signaling pathway in EC and elaborates on the specific targets and efficacy of TCM in treating EC through intervention in the PI3K/Akt signaling pathway in the past five years. TCM materials and extracts inhibiting the PI3K/Akt signaling pathway in EC include Borneolum, spore powder of Ganoderma lucidum without spore coat, extract of Celastrus orbiculatus, root extract of Taraxacum, and Bruceae Fructus oil emulsion. TCM active ingredients exerting the effect include flavonoids, terpenoids, saponins, phenols, polysaccharides, alkaloids, and other compounds. TCM compound prescriptions with such effect include Qige San, Huqi San, Xuanfu Daizhetang, Tongyoutang and its decomposed prescriptions, Liujunzi Tang, and Xishenzhi Formula. In addition, TCM injections such as Compound Kushen Injection and Kang'ai injection also inhibit the PI3K/Akt signaling pathway in EC. This paper summarizes the role of the PI3K/Akt signaling pathway in EC and the TCM interventions, aiming to provide reference for the research and clinical application of new drugs for EC.
5.Effect of Shenqi Jianxin Formula(参芪健心方)on Mitochondrial Autophagy and the PINK1/Parkin Signaling Pathway in Cardiac Tissues in Chronic Heart Failure
Peichi XIE ; Pan LIU ; Zitong DING ; Jingyi BAI ; Deqi PANG ; Xiaohua DAI
Journal of Traditional Chinese Medicine 2026;67(4):447-455
ObjectiveTo explore the potential mechanism of Shenqi Jianxin Formula (参芪健心方) in the treatment of chronic heart failure (CHF) from the perspective of regulating mitochondrial autophagy via the PTEN-induced kinase 1 (PINK1)/E3 ubiquitin ligase (Parkin) pathway. MethodsMale SD rats were subjected to abdominal aortic constriction to establish the CHF model. Twenty-four successfully modeled rats were randomly divided into the model group, sacubitril/valsartan group, and low- and high-dose Shenqi Jianxin Formula groups, with 6 rats in each group. Six other rats were set as the sham surgery group, which were only separated the abdominal aorta and then closed the abdomen. Rats in the low-dose and high-dose Shenqi Jianxin Formula groups were given intragastric administration of Shenqi Jianxin Formula suspension at doses of 4.41 g/(kg·d) and 17.64 g/(kg·d), respectively; the sacubitril/valsartan group received intragastric administration of sacubitril/valsartan sodium tablet suspension at 10 mg/(kg·d); the sham surgery group and the model group were given normal saline at 10 ml/(kg·d) via intragastric gavage. The intervention lasted for 4 consecutive weeks. Cardiac function indices including left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) were detected, and serum brain natriuretic peptide (BNP) content was measured. HE staining and Masson staining were used to observe myocardial histopathological changes. Transmission electron microscopy was employed to examine the ultrastructure of cardiac tissues. Quantitative real-time polymerase chain reaction (Rt-qPCR) was performed to determine the mRNA expressions of PINK1/Parkin pathway-related factors and autophagy-associated proteins including Beclin-1, p62, and microtubule-associated protein 1 light chain 3 (LC3) in myocardial tissues. ResultsCompared with the sham surgery group, the model group showed significant decreases in LVEF and LVFS levels, an increase in serum BNP content, down-regulated mRNA and protein expressions of PINK1, Parkin and Beclin-1 in cardiac tissues, up-regulated mRNA and protein expressions of p62, as well as significant reductions in LC3B mRNA expression, phosphorylated PTEN-induced kinase 1 (p-PINK1) and phosphorylated E3 ubiquitin ligase (p-Parkin) protein levels, and the ratio of microtubule-associated protein 1 light chain 3-Ⅱ to microtubule-associated protein 1 light chain 3-Ⅰ (LC3Ⅱ/LC3Ⅰ) (P<0.05). Pathological results revealed obvious myocardial cell edema, necrosis and degeneration, increased disorder of myocardial fiber arrangement, extensive inflammatory cell infiltration, moderate to severe mitochondrial swelling, a few mitochondrial vacuolar changes, and no obvious autophagy in the field of vision in the model group. Compared with the model group, all the above indicators were significantly improved in the high-dose Shenqi Jianxin Formula group and the sacubitril/valsartan group (P<0.05). Moreover, the improvement of each index in the high-dose Shenqi Jianxin Formula group was superior to that in the low-dose group (P<0.05). In the high-dose Shenqi Jianxin Formula group, myocardial myofibrils were arranged regularly with orderly orientation, the striated structure was clear, and necrotic cells significantly reduced. ConclusionShenqi Jianxin Formula can activate the PINK1/Parkin signaling pathway in myocardial tissues, enhance mitochondrial autophagy, and clear dysfunctional mitochondria, thereby improving cardiac function and delaying the progression of CHF.
6.Relevant Mechanism of Traditional Chinese Medicine in Treatment of Hyperandrogenism in Polycystic Ovary Syndrome: A Review
Wenchen FAN ; Hui MA ; Yongfen DING ; Haotian MA ; Fei GAO ; Qiuyu LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):306-317
Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder among women of reproductive age. Hyperandrogenism (HA), one of its core pathological features, is closely associated with the clinical manifestations and metabolic complications of the disease. Current western medical treatments for PCOS-HA mainly include anti-androgen therapy and ovulation induction, such as short-acting oral contraceptives like Diane-35 and Yasmin. However, long-term use of these medications may result in adverse reactions like increasing the risk of liver dysfunction and exacerbating lipid metabolism disorders, with unsatisfactory long-term efficacy when used alone. Traditional Chinese medicine offers unique advantages in the treatment of PCOS-HA due to its holistic approach and multi-target regulatory mechanisms. In the view of traditional Chinese medicine, PCOS-HA is classified under the categories such as "delayed menstruation", "amenorrhea", and "infertility", with kidney deficiency as the root, as well as liver stagnation and spleen deficiency as the manifestations. Phlegm and blood stasis are considered to be intertwined throughout the disease course. Modern studies have shown that traditional Chinese medicine is significantly effective in improving the androgen levels, restoring ovulation, and improving insulin resistance in PCOS-HA patients. Representative prescriptions, such as Erxian Tang, Jiawei Xiaoyaosan, Guizhi Fulingwan, and Cangfu Daotantang, exert therapeutic effects through various mechanisms including regulation of the hypothalamic-pituitary-ovarian axis, reduction of ovarian androgen synthase activity, improvement of insulin signaling pathways, and inhibition of inflammation and oxidative stress, which demonstrates the characteristics of comprehensive treatment with traditional Chinese medicine. Based on the perspectives of etiology and pathogenesis of traditional Chinese medicine, modern medical cognition, typical prescriptions, and action mechanisms, this paper reviewed the research progress of traditional Chinese medicine in the treatment of PCOS-HA, aiming to provide a reference for in-depth research and clinical applications in this field.
7.Targeted fluorescent imaging probes for detecting the spatial distribution of VEGF in the retinas of rats with radiation retinopathy
Yunhe DING ; Bin WANG ; Feng LIU ; Zhiyang ZHANG ; Haibei DONG ; Wenwen GUO ; Haitao YIN
International Eye Science 2026;26(4):567-572
AIM: To detect the distribution and expression of vascular endothelial growth factor(VEGF)in radiation retinopathy(RR)through fluorescence targeted imaging.METHODS:Covalent binding of fluorescein FITC with VEGF antibody ranibizumab to prepare targeted fluorescent imaging probe ranibizumab-FITC. SD rats were randomly divided into three groups based on the principle of weight balance: a normal control group(Con group), a low-dose radiation group(10 Gy group), and a high-dose radiation group(30 Gy group). Medical linear accelerators and lead blocks were used to locally irradiate the rat eyeballs for modeling. Western blot and qRT-PCR were used to detect the expression levels of VEGF-A in each group and to screen for appropriate modeling dose. The inverted fluorescence microscope and the confocal microscope were used to observe the distribution of VEGF and imaging probes in the retinas of control and RR model group rats, and to verify the effectiveness of targeted probes.RESULTS:The expression level of VEGF-A in the retina of rats in the high-dose radiation group(30 Gy group)was higher than that in the normal control group(Con group). In early RR, VEGF expression was observed to be associated with microaneurysms and abnormal microvessels in the retina. VEGF accumulation was observed at the site of capillary wall damage. When retinal capillary endothelial damage occurred, targeted probes gathered on the outer surface of the vessel wall.CONCLUSION:The expression level of VEGF in the retina of RR model rats is elevated, and fluorescent targeted molecular imaging probes can detect the spatial distribution of VEGF at the microvascular lesions in the retina of RR rats.
8.Relevant Mechanism of Traditional Chinese Medicine in Treatment of Hyperandrogenism in Polycystic Ovary Syndrome: A Review
Wenchen FAN ; Hui MA ; Yongfen DING ; Haotian MA ; Fei GAO ; Qiuyu LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):306-317
Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder among women of reproductive age. Hyperandrogenism (HA), one of its core pathological features, is closely associated with the clinical manifestations and metabolic complications of the disease. Current western medical treatments for PCOS-HA mainly include anti-androgen therapy and ovulation induction, such as short-acting oral contraceptives like Diane-35 and Yasmin. However, long-term use of these medications may result in adverse reactions like increasing the risk of liver dysfunction and exacerbating lipid metabolism disorders, with unsatisfactory long-term efficacy when used alone. Traditional Chinese medicine offers unique advantages in the treatment of PCOS-HA due to its holistic approach and multi-target regulatory mechanisms. In the view of traditional Chinese medicine, PCOS-HA is classified under the categories such as "delayed menstruation", "amenorrhea", and "infertility", with kidney deficiency as the root, as well as liver stagnation and spleen deficiency as the manifestations. Phlegm and blood stasis are considered to be intertwined throughout the disease course. Modern studies have shown that traditional Chinese medicine is significantly effective in improving the androgen levels, restoring ovulation, and improving insulin resistance in PCOS-HA patients. Representative prescriptions, such as Erxian Tang, Jiawei Xiaoyaosan, Guizhi Fulingwan, and Cangfu Daotantang, exert therapeutic effects through various mechanisms including regulation of the hypothalamic-pituitary-ovarian axis, reduction of ovarian androgen synthase activity, improvement of insulin signaling pathways, and inhibition of inflammation and oxidative stress, which demonstrates the characteristics of comprehensive treatment with traditional Chinese medicine. Based on the perspectives of etiology and pathogenesis of traditional Chinese medicine, modern medical cognition, typical prescriptions, and action mechanisms, this paper reviewed the research progress of traditional Chinese medicine in the treatment of PCOS-HA, aiming to provide a reference for in-depth research and clinical applications in this field.
9.Effects of different exercise interventions on carboxylesterase 1 and inflammatory factors in skeletal muscle of type 2 diabetic rats
Shujuan HU ; Ping CHENG ; Xiao ZHANG ; Yiting DING ; Xuan LIU ; Rui PU ; Xianwang WANG
Chinese Journal of Tissue Engineering Research 2025;29(2):269-278
BACKGROUND:Carboxylesterase 1 and inflammatory factors play a crucial role in regulating lipid metabolism and glucose homeostasis.However,the effects of different exercise intensity interventions on carboxylesterase 1 and inflammatory factors in skeletal muscle of type 2 diabetic rats remain to be revealed. OBJECTIVE:To investigate the effects of different exercise intensity interventions on carboxylesterase 1 and inflammatory factors in skeletal muscle of type 2 diabetic rats. METHODS:Thirty-two 8-week-old male Sprague-Dawley rats were randomly divided into normal control group(n=12)and modeling group(n=20)after 1 week of adaptive feeding.Rat models of type 2 diabetes mellitus were prepared by high-fat diet and single injection of streptozotocin.After successful modeling,the rats were randomly divided into diabetic control group(n=6),moderate-intensity exercise group(n=6)and high-intensity intermittent exercise group(n=6).The latter two groups were subjected to treadmill training at corresponding intensities,once a day,50 minutes each,and 5 days per week.Exercise intervention in each group was carried out for 6 weeks.After the intervention,ELISA was used to detect blood glucose and blood lipids of rats.The morphological changes of skeletal muscle were observed by hematoxylin-eosin staining.The mRNA expression levels of carboxylesterase 1 and inflammatory cytokines were detected by real-time quantitative PCR.The protein expression levels of carboxylesterase 1 and inflammatory cytokines were detected by western blot and immunofluorescence. RESULTS AND CONCLUSION:Compared with the normal control group,fasting blood glucose,triglyceride,low-density lipoprotein cholesterol,insulin resistance index in the diabetic control group were significantly increased(P<0.01),insulin activity was decreased(P<0.05),and the mRNA and protein levels of carboxylesterase 1,never in mitosis gene A related kinase 7(NEK7)and interleukin 18 in skeletal muscle tissue were upregulated(P<0.05).Compared with the diabetic control group,fasting blood glucose,triglyceride,low-density lipoprotein cholesterol,and insulin resistance index in the moderate-intensity exercise group and high-intensity intermittent exercise group were down-regulated(P<0.05),and insulin activity was increased(P<0.05).Moreover,compared with the diabetic control group,the mRNA level of NEK7 and the protein levels of carboxylesterase 1,NEK7 and interleukin 18 in skeletal muscle were decreased in the moderate-intensity exercise group(P<0.05),while the mRNA levels of carboxylesterase 1,NEK7,NOD-like receptor heat protein domain associated protein 3 and interleukin 18 and the protein levels of carboxylesterase 1 and interleukin 18 in skeletal muscle were downregulated in the high-intensity intermittent exercise group(P<0.05).Hematoxylin-eosin staining showed that compared with the diabetic control group,the cavities of myofibers in the moderate-intensity exercise group became smaller,the number of internal cavities was reduced,and the cellular structure tended to be more intact;the myocytes of rats in the high-intensity intermittent exercise group were loosely arranged,with irregular tissue shape and increased cavities in myofibers.To conclude,both moderate-intensity exercise and high-intensity intermittent exercise can reduce blood glucose,lipid,insulin resistance and carboxylesterase 1 levels in type 2 diabetic rats.Moderate-intensity exercise can significantly reduce the expression level of NEK7 protein in skeletal muscle,while high-intensity intermittent exercise can significantly reduce the expression level of interleukin 18 protein in skeletal muscle.In addition,the level of carboxylesterase 1 is closely related to the levels of NEK7 and interleukin 18.
10.Gradient artificial bone repair scaffold regulates skeletal system tissue repair and regeneration
Yu ZHANG ; Ruian XU ; Lei FANG ; Longfei LI ; Shuyan LIU ; Lingxue DING ; Yuexi WANG ; Ziyan GUO ; Feng TIAN ; Jiajia XUE
Chinese Journal of Tissue Engineering Research 2025;29(4):846-855
BACKGROUND:Gradient artificial bone repair scaffolds can mimic unique anatomical features in musculoskeletal tissues,showing great potential for repairing injured musculoskeletal tissues. OBJECTIVE:To review the latest research advances in gradient artificial bone repair scaffolds for tissue engineering in the musculoskeletal system and describe their advantages and fabrication strategies. METHODS:The first author of the article searched the Web of Science and PubMed databases for articles published from 2000 to 2023 with search terms"gradient,bone regeneration,scaffold".Finally,76 papers were analyzed and summarized after the screening. RESULTS AND CONCLUSION:(1)As an important means of efficient and high-quality repair of skeletal system tissues,gradient artificial bone repair scaffolds are currently designed bionically for the natural gradient characteristics of bone tissue,bone-cartilage,and tendon-bone tissue.These scaffolds can mimic the extracellular matrix of native tissues to a certain extent in terms of structure and composition,thus promoting cell adhesion,migration,proliferation,differentiation,and regenerative recovery of damaged tissues to their native state.(2)Advanced manufacturing technology provides more possibilities for gradient artificial bone repair scaffold preparation:Gradient electrospun fiber scaffolds constructed by spatially differentiated fiber arrangement and loading of biologically active substances have been developed;gradient 3D printed scaffolds fabricated by layered stacking,graded porosity,and bio-3D printing technology;gradient hydrogel scaffolds fabricated by in-situ layered injections,simple layer-by-layer stacking,and freeze-drying method;and in addition,there are also scaffolds made by other modalities or multi-method coupling.These scaffolds have demonstrated good biocompatibility in vitro experiments,were able to accelerate tissue regeneration in small animal tests,and were observed to have significantly improved histological structure.(3)The currently developed gradient artificial bone repair scaffolds have problems such as mismatch of gradient scales,unclear material-tissue interactions,and side effects caused by degradation products,which need to be further optimized by combining the strengths of related disciplines and clinical needs in the future.

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