BACKGROUND:Living microecological hydrogels are a hot topic in the field of wound dressing and have received widespread attention.OBJECTIVE:To summarize the basic features and advantages of living microecological hydrogels,review the progress in the application of hydrogels loaded with different living organisms in skin wound repair in recent years.METHODS:The articles published from database inception to 2024 were retrieved from Web of Science,PubMed,CNKI,and WanFang databases with"cell,probiotics,phage,chlorella,algae,living microecological,hydrogel,skin,wound healing,wound repair"as search terms in English and Chinese.The articles for inclusion were screened according to the inclusion and exclusion criteria.Finally,108 articles were included for review.RESULTS AND CONCLUSION:The living microecological hydrogels have good biocompatibility,and the hydrogel can provide a suitable living environment for the loaded organisms,and play a barrier role between the living organisms and the wound to avoid potential threats.Compared with traditional wound dressings,the effect of living microecological hydrogels is sustainable and renewable.Biological regulation can keep the microenvironment at the wound site relatively stable,which can provide suitable conditions for wound healing for a long time and reduce the additional trauma caused by frequent dressing changes.Compared with the direct use of living organisms to promote wound healing,living microecological hydrogels can improve the survival rate of organisms and ensure their biological regulation.Living microecological hydrogels promote wound healing mainly by regulating the"inflammation"and"proliferation"stages in the wound healing process.The existing living microecological hydrogels mainly load organisms such as cells,probiotics,algae,and phages,which give hydrogels with different biological properties,so that they can promote wound healing by releasing substances required for wound healing or improving the wound environment,and have great application potential.To further expand the actual clinical application of living microecological hydrogels,it is necessary to further control the biosafety risks of active organisms in hydrogels in the future,avoid potential biological threats,and research the hydrogel matrix that can better adapt to the complex changes of human skin wounds and can support living organisms.

BACKGROUND:3D-printed bone tissue engineering scaffolds have obvious advantages in the research and clinical treatment of bone defect repair.As one of the important raw materials for 3D printed bone scaffolds,poly-L-lactic acid has a great potential for application in performing bone defect repair,but clinical patients with different bone defect causative factors have different requirements for the comprehensive performance of poly-L-lactic acid bone scaffolds.OBJECTIVE:To summarize and review the development of 3D printing technology and poly-L-lactic acid scaffolds and the design strategies chosen for scaffolds for bone repair in the setting of bone diseases such as osteomyelitis,bone tumor,osteonecrosis,and osteoporosis.METHODS:Literature from CNKI,WanFang,PubMed,Science Direct,and Web of Science databases were searched and screened from 1994 to 2024.Search terms were"3D printing,polylactic acid,bone tissue engineering scaffold,osteomyelitis,bone tumor,osteonecrosis,osteoporosis,bone defect"in Chinese and English.The screened 62 articles were systematically summarized and analyzed.RESULTS AND CONCLUSION:(1)Poly-L-lactic acid is considered to be an ideal raw material for artificial bone scaffold design due to its non-toxicity,processability,biocompatibility,and ability to self-degrade in the human environment.The application of 3D printing technology has enabled poly-L-lactic acid bone scaffolds to meet the multilayered and porous structural design requirements of biomimetic artificial bone repair materials,and to optimize the mechanical properties for better bone repair.(2)According to different bone disease microenvironments,timely adjustment of the functional design of poly-L-lactic acid scaffolds is important for the comprehensive osteogenic efficacy of the scaffolds.The article discusses the application of poly-L-lactic acid scaffolds in bone disease environments such as osteomyelitis,bone tumor,osteonecrosis,and osteoporosis,and highlights the importance of rationally grasping the timing of bone disease treatment and bone tissue regeneration for bone defects caused by different bone diseases.(3)Although poly-L-lactic acid scaffolds show potential in bone repair,there are still some problems,such as the need to further optimize the structural design of the scaffolds to fit new bone regeneration,enhance the bioactivity of the scaffolds,and take into account other functions(e.g.,antimicrobial,anti-tumor,and anti-osteoporosis)in order to adapt to the needs of bone tissue repair in different pathological environments.

BACKGROUND:The incidence rate of chronic non-specific neck pain is high and the etiology is unknown.Myofascial pain and deep cervical flexor atrophy are the key factors.Extracorporeal shockwave therapy can improve microcirculation,relieve local pain,and delay the degenerative development of the cervical spine,while motion control training can significantly improve neck muscle strength and endurance and reduce neck pain.However,both methods have limited effectiveness when applied individually.OBJECTIVE:To explore the therapeutic efficacy of extracorporeal shock wave intervention combined with motion control training at the upper trapezius muscle on chronic non-specific neck pain.METHODS:Forty-two patients with chronic non-specific neck pain recruited from Shenyang Sport University were randomly divided into three groups:a shock wave group(n=14),in which extracorporeal shockwave intervention at the upper trapezius muscle was given for 10-15 minutes,once a week for 4 weeks;a training group(n=14),in which motion control training was given for 40-50 minutes,three times a week for 4 weeks;and a combination group(n=14),in which extracorporeal shockwave intervention at the upper trapezius muscle combined with motion control training was performed for 4 weeks.Patients were assessed for pain intensity,cervical spine function,upper trapezius muscle thickness,hemodynamic parameters,and serum interleukin 6 and tumor necrosis factor α levels before intervention,1 week and 4 weeks after intervention.RESULTS AND CONCLUSION:(1)Compared with the pre-intervention period,the visual analogue scale scores and neck disability index in the three groups were lower after 1 and 4 weeks of intervention(P＜0.05),and the visual analogue scale scores and neck disability index in the combination group were lower than those of the shock wave group and the training group(P＜0.05).(2)Compared with the pre-intervention period,the upper trapezius thickness increased in the training group and the combination group after 4 weeks of intervention(P＜0.05);the upper trapezius thickness was greater in the combination group than in the shock wave group and the training group after 4 weeks of intervention(P＜0.05).(3)The shock wave group and the combination group had an increase in the peak systolic velocity of the ascending segment of the transverse carotid artery(P＜0.05)and a decrease in the resistance index(P＜0.05)after 1 and 4 weeks of intervention,while the training group showed an increase in the peak systolic velocity of the ascending segment of the transverse carotid artery(P＜0.05)and a decrease in the resistance index(P＜0.05)after 4 weeks of intervention.The peak systolic velocity of the ascending segment of the transverse carotid artery in the combination group was higher(P＜0.05)and the resistance index was lower(P＜0.05)than those in the shockwave group and the training group after 1 and 4 weeks of intervention.(4)Compared with the pre-intervention period,the levels of interleukin 6 and tumor necrosis factor α were reduced in the shock wave and combination groups after 1 and 4 weeks of intervention(P＜0.05),and in the training group after 4 weeks of intervention(P＜0.05).After 1 and 4 weeks of intervention,the levels of interleukin 6 and tumor necrosis factor α were lower in the combination group than in the shock wave group and the training group(P＜0.05).To conclude,extracorporeal shock wave combined with motion control training for chronic non-specific neck pain significantly reduces pain and improves neck function,and the mechanism of action may be to promote the blood flow velocity at the trigger point,reduce blood flow resistance,reduce the serum levels of interleukin 6 and tumor necrosis factor α,and increase the thickness of the upper trapezius muscle.

BACKGROUND:Living microecological hydrogels are a hot topic in the field of wound dressing and have received widespread attention.OBJECTIVE:To summarize the basic features and advantages of living microecological hydrogels,review the progress in the application of hydrogels loaded with different living organisms in skin wound repair in recent years.METHODS:The articles published from database inception to 2024 were retrieved from Web of Science,PubMed,CNKI,and WanFang databases with"cell,probiotics,phage,chlorella,algae,living microecological,hydrogel,skin,wound healing,wound repair"as search terms in English and Chinese.The articles for inclusion were screened according to the inclusion and exclusion criteria.Finally,108 articles were included for review.RESULTS AND CONCLUSION:The living microecological hydrogels have good biocompatibility,and the hydrogel can provide a suitable living environment for the loaded organisms,and play a barrier role between the living organisms and the wound to avoid potential threats.Compared with traditional wound dressings,the effect of living microecological hydrogels is sustainable and renewable.Biological regulation can keep the microenvironment at the wound site relatively stable,which can provide suitable conditions for wound healing for a long time and reduce the additional trauma caused by frequent dressing changes.Compared with the direct use of living organisms to promote wound healing,living microecological hydrogels can improve the survival rate of organisms and ensure their biological regulation.Living microecological hydrogels promote wound healing mainly by regulating the"inflammation"and"proliferation"stages in the wound healing process.The existing living microecological hydrogels mainly load organisms such as cells,probiotics,algae,and phages,which give hydrogels with different biological properties,so that they can promote wound healing by releasing substances required for wound healing or improving the wound environment,and have great application potential.To further expand the actual clinical application of living microecological hydrogels,it is necessary to further control the biosafety risks of active organisms in hydrogels in the future,avoid potential biological threats,and research the hydrogel matrix that can better adapt to the complex changes of human skin wounds and can support living organisms.

BACKGROUND:3D-printed bone tissue engineering scaffolds have obvious advantages in the research and clinical treatment of bone defect repair.As one of the important raw materials for 3D printed bone scaffolds,poly-L-lactic acid has a great potential for application in performing bone defect repair,but clinical patients with different bone defect causative factors have different requirements for the comprehensive performance of poly-L-lactic acid bone scaffolds.OBJECTIVE:To summarize and review the development of 3D printing technology and poly-L-lactic acid scaffolds and the design strategies chosen for scaffolds for bone repair in the setting of bone diseases such as osteomyelitis,bone tumor,osteonecrosis,and osteoporosis.METHODS:Literature from CNKI,WanFang,PubMed,Science Direct,and Web of Science databases were searched and screened from 1994 to 2024.Search terms were"3D printing,polylactic acid,bone tissue engineering scaffold,osteomyelitis,bone tumor,osteonecrosis,osteoporosis,bone defect"in Chinese and English.The screened 62 articles were systematically summarized and analyzed.RESULTS AND CONCLUSION:(1)Poly-L-lactic acid is considered to be an ideal raw material for artificial bone scaffold design due to its non-toxicity,processability,biocompatibility,and ability to self-degrade in the human environment.The application of 3D printing technology has enabled poly-L-lactic acid bone scaffolds to meet the multilayered and porous structural design requirements of biomimetic artificial bone repair materials,and to optimize the mechanical properties for better bone repair.(2)According to different bone disease microenvironments,timely adjustment of the functional design of poly-L-lactic acid scaffolds is important for the comprehensive osteogenic efficacy of the scaffolds.The article discusses the application of poly-L-lactic acid scaffolds in bone disease environments such as osteomyelitis,bone tumor,osteonecrosis,and osteoporosis,and highlights the importance of rationally grasping the timing of bone disease treatment and bone tissue regeneration for bone defects caused by different bone diseases.(3)Although poly-L-lactic acid scaffolds show potential in bone repair,there are still some problems,such as the need to further optimize the structural design of the scaffolds to fit new bone regeneration,enhance the bioactivity of the scaffolds,and take into account other functions(e.g.,antimicrobial,anti-tumor,and anti-osteoporosis)in order to adapt to the needs of bone tissue repair in different pathological environments.

Objective: To systematically evaluate the performance of machine learning (ML) models in predicting non suicidal self injury (NSSI) behavior among adolescents, providing an evidence based foundation for the development of clinically applicable risk assessment tools. Methods: A comprehensive search was conducted in PubMed, Embase, Web of Science, CNKI, and Wanfang databases for relevant studies from their inception to July 21, 2025. The Prediction Model Risk of Bias Assessment Tool (PROBAST) was used to evaluate the methodological quality of the included studies. Stata 18 software was used to calculate the area under the receiver operating characteristic curve (AUC) of the models, and publication bias assessment, sensitivity analysis, and Egger s test were performed. Results: The total of 12 studies (42 prediction models) involving 58 070 adolescents were included. There were 15 machine learning algorithms in total, among which Random Forest, Logistic Regression, XGBoost, and Support Vector Machines were the most frequently utilized. The most common predictors were gender (female), family function, depression, emotion regulation, and age. All 12 included studies exhibited a high risk of bias. The pooled AUC was 0.80 (95% CI =0.78-0.82), although heterogeneity was substantial ( I 2=95.8%, P <0.01). Sensitivity analysis confirmed the robustness of these findings (no overlap in 95% CI ), while Egger s test indicated the presence of publication bias ( P <0.05). Conclusions Machine learning demonstrates potential in the risk prediction of adolescent NSSI, but existing models have a high risk of bias. Future research should focus on improving methodological quality and optimizing model reliability through rigorous external validation.

Objective: To explore the developmental trajectories of depression in children and adolescents and their association with family types, and to analyze the role of being an only child in the context, so as to provide a basis for early identification of mental health issues in children and adolescents. Methods: The study was a secondary analysis based on the existing database of the Jiangsu Provincial Student Common Diseases and Health Influencing Factors Monitoring and Intervention Project. A total of 11 502 students who had completed at least two measurements using the Chinese version of the Center for Epidemiologic Studies Depression Scale (CES-D) between 2022 and 2024, and had complete information on family type, gender, and age, were selected as the study subjects. Latent class trajectory modeling was used to identify depression developmental trajectories. Multinomial Logistic regression was applied to analyze the association between family type and depression developmental trajectories, and the interaction effect of family type and being an only child was tested. Results: Three types of depression developmental trajectories were identified among children and adolescents: low stable type (91.3%, 10 504 students), moderate rising type (4.3%, 500 students), and high declining type (4.3%, 498 students). Significant differences were observed among the different trajectory groups in terms of gender, age, parental education level, family type, baseline CES-D score, and baseline school type ( χ 2/H=17.48, 139.97, 19.72 , 30.77, 1 081.35, 220.81, all P <0.05). Multinomial Logistic regression analysis showed that, using the low stable type as the reference trajectory group and the nuclear family as the reference family type, after adjusting for confounding factors such as gender, age, and parental education level, single parent families ( OR=1.87, 95%CI= 1.16-3.03) and grandparent headed families ( OR=1.83, 95%CI =1.04-3.21) were significantly associated with the high declining type trajectory (both P <0.05). No significant association was found between family type and the moderate rising type trajectory (all P >0.05). The interaction effect between family type and being an only child was not statistically significant ( LRT=7.71, df=8, P =0.46). Conclusions Depressive symptoms in children and adolescents show heterogeneous developmental patterns during school age. Children and adolescents from single parent and intergenerational families are more likely to follow the high decreasing trajectory.

ObjectiveTo evaluate the efficacy and safety of Janus kinase （JAK） inhibitors combined with Chinese herbal medicine （CHM） in treating rheumatoid arthritis （RA）. MethodsClinical data from 169 RA patients were retrospectively collected. Among them， 71 cases received JAK inhibitors as the control group， while 98 cases received JAK inhibitors plus CHM as the observation group， both treated for 24 weeks. The rheumatoid factor （RF）， cyclic citic peptide antibody （anti-CCP）， erythrocyte sedimentation rate （ESR）， C-reactive protein （CRP）， and white blood cell count （WBC） were recorded before and after treatment. Databases including CNKI， Wanfang， VIP， PubMed and Web of Science were searched from inception till August 31st， 2025 for randomized controlled trials （RCTs） on the combined use of JAK inhibitors and CHM for RA. The methodological quality of the included studies was evaluated using the risk of bias assessment tool. Meta-analyses were performed for RF， anti-CCP， ESR， CRP， 28-joint disease activity score （DAS28）， overall clinical effective rate， and incidence of adverse events. Sensitivity analysis were also performed. ResultsThe retrospective study demonstrated that after treatment， ESR， CRP， and anti-CCP levels decreased in the observation group， while ESR and CRP levels decreased in the control group （P＜0.05）. Moreover， ESR and RF levels in the observation group were lower than those in the control group （P＜0.05）. A total of 9 RCTs involving 770 patients were included in the meta-analysis. The results indicated that the JAK inhibitors plus CHM group was superior to the JAK inhibitors group in reducing RF （MD=-8.97， 95%CI -15.01 to -2.94， P=0.004）， CRP （MD=-3.34， 95%CI -3.82 to -2.86， P＜0.001）， ESR （MD=-5.33， 95%CI -7.98 to -2.69， P＜0.001）， and DAS28 score （MD=-0.54， 95%CI -0.74 to -0.34， P＜0.001）， as well as in improving the overall clinical effective rate （OR=4.53， 95%CI 2.55 to 8.03， P＜0.001）. No statistically significant differences were observed between groups in anti-CCP levels （SMD=-2.08， 95%CI -4.41 to 0.24， P=0.080） or incidence of adverse events （OR=0.93， 95%CI 0.55 to 1.57， P=0.790）. ConclusionThe combination of JAK inhibitors and CHM demonstrates remarkable efficacy in treating RA， contributing to improved disease activity and reduced inflammatory markers with a favorable safety profile.

Based on the theory of blood collateral， postoperative recurrence and metastasis of bladder cancer are considered to arise primarily from the binding of stasis and toxin， which accumulate and hide within the blood collaterals. Accordingly， treatment should focus on clearing and resolving the deeply concealed stasis toxin retained in the blood collaterals. The paired use of insect and vine medicinals may exert synergistic effects by simultaneously searching out and eliminating pathogenic factors， guiding the action of herbs to the channels， and unblocking the collaterals. Drawing on clinical practice， the stasis-toxin pathogenesis of postoperative recurrence and metastasis of bladder cancer can be divided into four stages including stagnation and astringent of collateral qi， formation of fixed stasis nests， transformation of persistent stasis into toxin， and deficiency of healthy qi with lingering toxin. Accordingly， four herb pairs are proposed for each stage based on conventional treatment， which are Dilong （Pheretima）-Daxueteng （Caulis Sargentodoxae）， Shuizhi （Hirudo）-Jixueteng （Caulis Spatholobi）， Wugong （Scolopendra）-Luoshiteng （Caulis Trachelospermi）， and Quanxie （Scorpio）-Qianjinteng （stephania）. Their potential modern pharmacological mechanisms are further discussed.

Intervertebral disc degeneration (IVDD) is the predominant pathological contributor to chronic low back pain, a pervasive musculoskeletal condition affecting over 630 million people globally and imposing tremendous socioeconomic and public health burdens. The etiopathogenesis of IVDD is remarkably complex and multifactorial, involving intricate crosstalk among chronic inflammatory responses, extracellular matrix (ECM) catabolism, cellular senescence, aberrant programmed cell death (including apoptosis, pyroptosis, and ferroptosis), mitochondrial dysfunction, and oxidative damage. Compelling evidence indicates that the inflammatory microenvironment acts as a decisive driving force throughout the entire degenerative course of IVDD. Among the diverse inflammatory mediators, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) serve as core pro-inflammatory cytokines that initiate and perpetuate the degenerative cascade. These two pivotal cytokines collectively activate an array of canonical intracellular signaling pathways, including nuclear factor-κB (NF-κB), mitogen-activated protein kinase (MAPK), nucleotide-binding domain leucine-rich repeat and pyrin domain-containing receptor 3 (NLRP3) inflammasome, and the phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) cascade. Such interconnected signaling networks trigger a self-reinforcing positive feedback loop, which exacerbates inflammatory reactions, disrupts the anabolic-catabolic homeostasis of the ECM, promotes oxidative stress and mitochondrial injury, induces multiple forms of disc cell death, and ultimately leads to progressive structural collapse and functional deterioration of the intervertebral disc. Conventional therapeutic strategies, dominated by nonsteroidal anti-inflammatory drugs and surgical interventions, are limited by systemic adverse reactions, suboptimal long-term efficacy, and the risk of adjacent segment degeneration. In contrast, traditional Chinese medicine (TCM) exhibits prominent advantages in the prevention and treatment of IVDD by virtue of its holistic regulation, syndrome differentiation, and multi-component, multi-target, multi-pathway pharmacological properties. This review systematically elucidates the molecular mechanisms by which inflammation-associated signaling pathways modulate disc cell fate and ECM metabolic homeostasis, and comprehensively summarizes the experimental progress over the past five years on TCM monomers and compound formulas for intervening in IVDD. Accumulating studies have confirmed that numerous natural active ingredients isolated from herbal medicines (ferulic acid, mangiferin, paeonol, astragaloside IV) and representative TCM compound prescriptions (Bushen Huoxue Formula, Shensuitongzhi Formula, Fuzi Decoction) exert synergistic protective effects by coordinately targeting core signaling hubs. These TCM agents demonstrate potent anti-inflammatory, antioxidant, anti-apoptotic, anti-pyroptotic, anti-ferroptotic, ECM-protective, and autophagy-regulating bioactivities, thereby effectively decelerating the pathological progression of IVDD. Despite remarkable progress, current investigations are still confronted by several critical limitations. Most studies are restricted to validating the regulatory effects of single TCM components on individual signaling pathways, leaving the systematic, dynamic, and synergistic mechanisms of TCM compound formulas within multi-pathway regulatory networks largely unexplored. Furthermore, clinical translation of TCM is severely hampered by the lack of efficient targeted drug delivery systems, unclear pharmacokinetic profiles, suboptimal local bioavailability, and incomplete long-term safety assessments. Therefore, future research should adopt an interdisciplinary paradigm integrating multi-omics technologies, artificial intelligence, organoid models, and organ-on-chip systems to systematically decipher the scientific basis of TCM against IVDD. Concurrently, the development of intelligent, site-specific delivery systems (hydrogels, nanoparticles, exosome-based carriers) is urgently needed to enhance the local accumulation and sustained release of TCM ingredients. By deepening mechanistic exploration and accelerating translational research, TCM is expected to evolve into safe, effective, and personalized precision therapeutic regimens for IVDD, offering novel and reliable solutions for the clinical management of chronic low back pain.