BACKGROUND:In the field of tissue engineering,decellularized scaffolds are widely used owing to their biocompatibility.Nonetheless,these scaffolds frequently encounter the limitation of inadequate cell infiltration due to their densely structured composition.Using laser micro-patterning technology for structural modification can improve cell adhesion and proliferation.OBJECTIVE:To summarize the research progress of laser microporous decellularized scaffolds in tissue regeneration.METHODS:Related literature was searched in PubMed and CNKI databases.The Chinese and English search terms were"decellularized scaffold,laser micro-patterning technology,laser microporous decellularized scaffold,extracellular matrix,laser drilling,tissue regeneration."References were screened according to inclusion and exclusion criteria,and 65 articles were finally included for analysis and discussion.RESULTS AND CONCLUSION:(1)Laser micro-patterning technology can selectively remove tissues to achieve scaffold modification.Laser treatment can have controllable effects on the pore structure,mechanical properties and cell permeability of the scaffold.(2)To obtain the optimal cell integration and remodeling effect,factors such as scaffold pretreatment,laser and decellularization process sequence,laser parameter setting,decellularization process and pore structure should be considered.(3)At present,the application of laser microporous decellularized scaffolds has shown that it can promote tissue repair,and it is also necessary to solve the problem of tissue thermal damage.Depending on the absorption of different wavelengths of laser light by the tissue,a reasonable selection of laser type is a feasible solution.(4)Tissue damage repair by laser microporous decellularized scaffold is expected to achieve clinical transformation,and optimizing laser technology and carrying out larger scale biosafety testing are future research directions.

BACKGROUND:In the field of tissue engineering,decellularized scaffolds are widely used owing to their biocompatibility.Nonetheless,these scaffolds frequently encounter the limitation of inadequate cell infiltration due to their densely structured composition.Using laser micro-patterning technology for structural modification can improve cell adhesion and proliferation.OBJECTIVE:To summarize the research progress of laser microporous decellularized scaffolds in tissue regeneration.METHODS:Related literature was searched in PubMed and CNKI databases.The Chinese and English search terms were"decellularized scaffold,laser micro-patterning technology,laser microporous decellularized scaffold,extracellular matrix,laser drilling,tissue regeneration."References were screened according to inclusion and exclusion criteria,and 65 articles were finally included for analysis and discussion.RESULTS AND CONCLUSION:(1)Laser micro-patterning technology can selectively remove tissues to achieve scaffold modification.Laser treatment can have controllable effects on the pore structure,mechanical properties and cell permeability of the scaffold.(2)To obtain the optimal cell integration and remodeling effect,factors such as scaffold pretreatment,laser and decellularization process sequence,laser parameter setting,decellularization process and pore structure should be considered.(3)At present,the application of laser microporous decellularized scaffolds has shown that it can promote tissue repair,and it is also necessary to solve the problem of tissue thermal damage.Depending on the absorption of different wavelengths of laser light by the tissue,a reasonable selection of laser type is a feasible solution.(4)Tissue damage repair by laser microporous decellularized scaffold is expected to achieve clinical transformation,and optimizing laser technology and carrying out larger scale biosafety testing are future research directions.

Abstract In recent years, the prevalence of overweight and obesity among children and adolescents has risen rapidly, posing a serious threat to their physical and mental health. To provide scientific, systematic, and standardized weight management guidance for overweight and obese children and adolescents, the study focuses on the core concept of healthy lifestyle intervention, integrates multidisciplinary expert opinions and research findings,and proposes a comprehensive multidisciplinary intervention framework covering scientific exercise intervention, precise nutrition and diet, optimized sleep management, and standardized psychological support. It calls for the establishment of a multi agent collaborative management mechanism led by the government, implemented by families, fostered by schools, initiated by individuals, optimized by communities, reinforced by healthcare, and coordinated by multiple stakeholders. Emphasizing a child and adolescent centered approach, the consensus advocates for comprehensive, multi level, and personalized guidance strategies to promote the internalization and maintenance of a healthy lifestyle. It serves as a reference and provides recommendations for the effective prevention and control of overweight and obesity, and enhancing the health level of children and adolescents.

Inflammatory bowel disease(IBD)is a chronic inflammatory bowel disease with a complex etiology,mainly including two types:ulcerative colitis(UC)and Crohn's disease(CD),whose risk factors for its development are still incompletely understood.In recent years,Mendelian randomization(MR)has gained increasing attention in IBD research.MR mainly uses genetic variation as an instrumental variable to infer causality between exposure and outcome,effectively avoiding confounding and reverse causality in observational studies and randomised controlled trials.This review summarises currently published MR studies related to IBD,focusing on causal relationships between different risk factors and IBD development.Current findings support a causal relation-ship between IBD and selected oral diseases,skin diseases,psychiatric disorders,autoimmune diseases,bone diseases,gut diseases,gut microbiota,cytokines and nutrients,but not between IBD and lifestyle,cardiovascular diseases and neurodegenerative diseases.Despite its limitations,MR studies are of great significance in improving understanding of etiology of IBD and in identifying potential therapeutic interventions.

Viral myocarditis(VMC)is a type of myocarditis caused by Coxsackievirus B3(CVB3)infection.Its pathogenesis is complex that includes direct viral action,host immune and inflammatory response,myocardial structure and function remodeling.The therapeutic effect of single target drugs is limited,while traditional Chinese medicine not only has antiviral effects,but also demon-strates systematic advantages in intervening in VMC due to its"multi-component,multi-target,and multi-pathway"characteristics.This article reviews the pathogenic mechanisms of CVB3-induced VMC,clarifies the interaction between CVB3 and host cells,and ex-plores the intervention mechanisms and developments of traditional Chinese medicine interventions for CVB3-induced VMC.At the same time,the prospects of traditional Chinese medicine treatment for CVB3-induced VMC in this study suggest that future research should strengthen the analysis of multi-target synergistic mechanisms based on traditional Chinese medicine formulas,combine artifi-cial intelligence,genomics,and gene editing technologies to predict drug-target interaction networks,establish standardized and per-sonalized system for integrated traditional Chinese and Western medicine treatment plans,and provide more effective strategies for the prevention and treatment of VMC.

Objective To explore the therapeutic mechanism of hot compress with Sangzhi Shengjiang Decoction(manily composed of Zingiberis Rhizoma Recens,Mori Ramulus,Cinnamomi Ramulus,Speranskiae Tuberculatae Herba,and Cervi Cornus Colla)in relieving pain and improving hemorheology of patients with femoral head necrosis(FHN).Methods A total of 104 patients with FHN who admitted to Guang'anmen Hospital Baoding,China Academy of Chinese Medical Sciences from May 2022 to May 2024 were randomly divided into the control group and the treatment group according to the random number table method,with 52 cases in each group.The control group was treated with Alendronate Sodium orally,and the treatment group was given hot compress with Sangzhi Shengjiang Decoction on the basis of treatment for the control group.The course of treatment for the two groups covered three months.Before and after the treatment,the traditional Chinese medicine(TCM)syndrome score,Harris score of joint function,Visual Analogue Scale(VAS)score for pain,and the levels of hemorheology indicators,bone metabolism indicators,and bone mineral density(BMD)of proximal femur and lumbar trabecular bone in the two groups were observed.After treatment,the clinical efficacy of patients in the two groups was evaluated.Results(1)After three months of treatment,the total effective rate of the treatment group was 92.31％(48/52)and that of the control group was 71.15％(37/52),and the intergroup comparison(tested by chi-square test)showed that the clinical efficacy of the treatment group was significantly superior to that of the control group(P<0.01).(2)After treatment,the scores of TCM symptoms such as soreness and weakness in the waist and knee,claudication,restlessness and insomnia,and soreness and heaviness of lower limbs in the two groups were decreased compared with those before treatment(P<0.05),and the decreases in the treatment group were significantly superior to that in the control group(P<0.01).(3)After treatment,the Harris scores of joint function in the two groups were increased(P<0.05)and the VAS scores for pain were decreased compared with those before treatment(P<0.05),and the increase of Harris scores and the decrease of VAS scores in the treatment group were significantly superior to those in the control group(P<0.01).(4)After treatment,the levels of hemorheology indicators such as erythrocyte sedimentation rate(ESR),whole blood low-shear viscosity(LBV),and whole blood high-shear viscosity(HBV)in the two groups were improved compared with those before treatment(P<0.05),and the improvement in the treatment group was significantly superior to that in the control group(P<0.01).(5)After treatment,the levels of bone metabolism indicators such as serum N-terminal mid-fragment of osteocalcin(N-MID)β-C-terminal telopeptide of type Ⅰ collagen(β-CTX)and total procollagen type Ⅰ N-terminal propeptide(T-PINP)levels of patients in the two groups were decreased compared with those before treatment(P<0.05),and serum 25-hydroxy vitamin D[25-(OH)D]level was increased compared with that before treatment(P<0.05).The decrease of serum N-MID,β-CTX and T-PINP levels and the increase of serum 25-(OH)D level in the treatment group were significantly superior to those in the control group(P<0.01).(6)After treatment,BMD of proximal femur and lumbar trabecular bone in the two groups was increased compared with that before treatment(P<0.05),and the increase in the treatment group was significantly superior to that in the control group(P<0.01).Conclusion Hot compress with Sangzhi Shengjiang Decoction exerts certain efficacy for the treatment of patients with FHN.The therapy is effective on reducing the scores of TCM syndrome,relieving pain,improving joint function,regulating bone metabolism and bone density,improving hemorheology indicators,and presenting remarkable therapeutic effect.

Objective To explore the mechanism of Taohong Siwu Decoction in recovering joint muscle strength and bone mineral density(BMD)in patients after hip preservation surgery for osteonecrosis of the femoral head(ONFH).Methods A total of 110 ONFH patients admitted to Guang'anmen Hospital Baoding Branch,China Academy of Chinese Medical Sciences from April 2022 to April 2024 were enrolled.The patients were equally randomized into a control group and a study group using a random number table,with 55 cases in each group.All patients underwent core decompression surgery and then were given postoperative conventional western medical treatment,and the study group received additional modified Taohong Siwu Decoction.The course of treatment lasted for 8 weeks.Before and after treatment,the two groups were observed in the changes of traditional Chinese medicine(TCM)syndrome scores,Visual Analogue Scale(VAS)score for pain,Harris hip score,joint muscle strength,bone mineral density(BMD),hemorheological parameters(including plasma viscosity,whole blood high-shear viscosity,and whole blood low-shear viscosity),and bone metabolism markers[including alkaline phosphatase(ALP),osteocalcin(BGP),and bone morphogenetic protein 2(BMP-2)].After treatment,the clinical efficacy was evaluated between groups.Results(1)After 8 weeks of treatment,the total effective rate in the study group was 92.73%(51/55),which was significantly higher than that in the control group(72.73%,40/55).The intergroup comparison showed a statistically significant difference(χ2=7.698,P＜0.01).(2)After treatment,scores for hip pain,soreness and weakness of the lower back and knees,mental fatigue,and deep-thin-choppy pulse decreased in both groups compared with those before treatment(P＜0.05).Moreover,the magnitude of reduction in all these scores was significantly greater in the study group than that in the control group(P＜0.01).(3)After treatment,the VAS scores for pain severity decreased in both groups compared with baseline(P＜0.05),while the Harris scores for joint function increased in both groups(P＜0.05).Furthermore,the magnitude of reduction in VAS scores and the magnitude of improvement in Harris scores were both significantly greater in the study group than those in the control group(P＜0.01).(4)After treatment,plasma viscosity,high-shear whole blood viscosity,and low-shear whole blood viscosity decreased in both groups compared with those before treatment(P＜0.05).Additionally,the reductions in all these parameters were significantly more pronounced in the study group than in the control group(P＜0.01).(5)After treatment,serum alkaline phosphatase(ALP)levels decreased in both groups(P＜0.05),while serum osteocalcin(BGP)and bone morphogenetic protein-2(BMP-2)levels increased in both groups(P＜0.05).Crucially,the magnitude of reduction in serum ALP levels and the magnitude of elevation in serum BGP and BMP-2 levels were all significantly greater in the study group than those in the control group(P＜0.01).(6)After treatment,in the study group,the number of patients with Grade 3 muscle strength significantly decreased while the number with Grade 4 muscle strength significantly increased compared with those before treatment(P＜0.05).In contrast,although the control group showed some improvement in joint muscle strength,the changes were not statistically significant(P＞0.05).After treatment,the intergroup comparisons showed that the study group had a significantly smaller number of patients with Grade 3 muscle strength and a significantly larger number with Grade 4 muscle strength than the control group(P＜0.01).(7)After treatment,both local femoral head BMD and average BMD increased in both groups compared with those before treatment(P＜0.05).The magnitude of increase in both local and average BMD was significantly greater in the study group than that in the control group(P＜0.01).Conclusion The application of Taohong Siwu Decoction in the treatment of in patients after hip preservation surgery for ONFH is effective on reducing TCM syndrome scores,alleviating pain,improving joint function and hemorheology,and restoring BMD and bone metabolism indicators,which enhances the overall clinical efficacy for the patients.

ObjectiveTo unveil the mechanism of Jianpi Huogu prescription （JPHGP） in ameliorating the dyslipidemia of steroid-induced osteonecrosis of the femur head （SONFH） by oxylipidomics combined with transcriptomics. MethodsSixty SD rats were assigned into normal， model， low-， medium-， and high-dose （2.5， 5， 10 g·kg^-1， respectively） JPHGP， and Jiangushengwan （1.53 g·kg^-1） groups. Lipopolysaccharide was injected into the tail vein at a dose of 20 μg·kg^-1 on days 1 and 2， and methylprednisolone sodium succinate was injected at a dose of 40 mg·kg^-1 into the buttock muscle on days 3 to 5. The normal group received an equal volume of normal saline. Drug administration by gavage began 4 weeks after the last injection， and samples were taken after administration for 8 weeks. Hematoxylin-eosin staining was conducted to reveal the histopathological changes of the femoral head， and the number of adipocytes， the rate of empty bone lacunae， and the trabecular area were calculated. Micro-computed tomography was used for revealing the histological and histomorphometrical changes of the femoral head. Enzyme-linked immunosorbent assay was employed to measure the serum levels of triglyceride （TG）， total cholesterol （TC）， low-density lipoprotein （LDL）， high-density lipoprotein （HDL）， apolipoprotein A1 （ApoA1）， and apolipoprotein B （ApoB）. At the same time， the femoral head was collected for oxylipidomic and transcriptomic detection. The differential metabolites and differential genes were enriched and analyzed， and the target genes regulating lipid metabolism were predicted. The predicted target proteins were further verified by molecular docking， immunohistochemistry， and Western blot. ResultsCompared with the normal group， the model group showcased thinning of the femoral head， trabecular fracture， karyopyknosis， subchondral cystic degeneration， increases in the number of adipocytes and the rate of empty bone lacunae （P<0.01）， a reduction in the trabecular area （P<0.01）， decreases in BMD， Tb.Th， Tb.N， and BV/TV， and increases in Tb.Sp and BS/BV （P<0.01）. Compared with the model group， the JPHGP groups showed no obvious thinning of the femoral head or subchondroidal cystic degeneration. The high- and medium-dose JPHGP groups presented declines in the number of adipocytes and the rate of empty bone lacunae， an increase in the trabecular area （P<0.05， P<0.01）， rises in BMD， Tb.Th， Tb.N， and BV/TV， and decreases in Tb.Sp and BS/BV （P<0.05， P<0.01）. Compared with the normal group， the model group showcased raised serum levels of TG， TC， LDL， and ApoB and lowered serum levels of HDL and ApoA1 （P<0.01）. Compared with the model group， the JPHGP groups had lowered serum levels of TG， TC， LDL， and ApoB （P<0.05， P<0.01） and a risen serum level of ApoA1 （P<0.05， P<0.01）. Moreover， the serum level of HDL in the high-dose JPHGP group increased （P<0.01）. A total of 19 different metabolites of disease set and drug set were screened out by oxylipidomics of the femoral head， and 119 core genes with restored expression were detected by transcriptomics. The enriched pathways were mainly concentrated in inflammation， lipids， apoptosis， and osteoclast differentiation. Molecular docking， immunohistochemistry， and Western blot results showed that compared with the normal group， the model group displayed increased content of 5-lipoxygenase （5-LO） and peroxisome proliferator-activated receptor γ （PPARγ） in the femoral head （P<0.01）. Compared with the model group， medium- and high-dose JPHGP reduced the content of 5-LO and PPARγ （P<0.05， P<0.01）. ConclusionJPHGP can restore the levels of oxidized lipid metabolites by regulating the 5-LO-PPARγ axis to treat SONFH in rats. Relevant studies provide experimental evidence for the efficacy mechanism of JPHGP in the treatment of SONFH.

ObjectiveTo unveil the mechanism of Jianpi Huogu prescription （JPHGP） in ameliorating the dyslipidemia of steroid-induced osteonecrosis of the femur head （SONFH） by oxylipidomics combined with transcriptomics. MethodsSixty SD rats were assigned into normal， model， low-， medium-， and high-dose （2.5， 5， 10 g·kg^-1， respectively） JPHGP， and Jiangushengwan （1.53 g·kg^-1） groups. Lipopolysaccharide was injected into the tail vein at a dose of 20 μg·kg^-1 on days 1 and 2， and methylprednisolone sodium succinate was injected at a dose of 40 mg·kg^-1 into the buttock muscle on days 3 to 5. The normal group received an equal volume of normal saline. Drug administration by gavage began 4 weeks after the last injection， and samples were taken after administration for 8 weeks. Hematoxylin-eosin staining was conducted to reveal the histopathological changes of the femoral head， and the number of adipocytes， the rate of empty bone lacunae， and the trabecular area were calculated. Micro-computed tomography was used for revealing the histological and histomorphometrical changes of the femoral head. Enzyme-linked immunosorbent assay was employed to measure the serum levels of triglyceride （TG）， total cholesterol （TC）， low-density lipoprotein （LDL）， high-density lipoprotein （HDL）， apolipoprotein A1 （ApoA1）， and apolipoprotein B （ApoB）. At the same time， the femoral head was collected for oxylipidomic and transcriptomic detection. The differential metabolites and differential genes were enriched and analyzed， and the target genes regulating lipid metabolism were predicted. The predicted target proteins were further verified by molecular docking， immunohistochemistry， and Western blot. ResultsCompared with the normal group， the model group showcased thinning of the femoral head， trabecular fracture， karyopyknosis， subchondral cystic degeneration， increases in the number of adipocytes and the rate of empty bone lacunae （P<0.01）， a reduction in the trabecular area （P<0.01）， decreases in BMD， Tb.Th， Tb.N， and BV/TV， and increases in Tb.Sp and BS/BV （P<0.01）. Compared with the model group， the JPHGP groups showed no obvious thinning of the femoral head or subchondroidal cystic degeneration. The high- and medium-dose JPHGP groups presented declines in the number of adipocytes and the rate of empty bone lacunae， an increase in the trabecular area （P<0.05， P<0.01）， rises in BMD， Tb.Th， Tb.N， and BV/TV， and decreases in Tb.Sp and BS/BV （P<0.05， P<0.01）. Compared with the normal group， the model group showcased raised serum levels of TG， TC， LDL， and ApoB and lowered serum levels of HDL and ApoA1 （P<0.01）. Compared with the model group， the JPHGP groups had lowered serum levels of TG， TC， LDL， and ApoB （P<0.05， P<0.01） and a risen serum level of ApoA1 （P<0.05， P<0.01）. Moreover， the serum level of HDL in the high-dose JPHGP group increased （P<0.01）. A total of 19 different metabolites of disease set and drug set were screened out by oxylipidomics of the femoral head， and 119 core genes with restored expression were detected by transcriptomics. The enriched pathways were mainly concentrated in inflammation， lipids， apoptosis， and osteoclast differentiation. Molecular docking， immunohistochemistry， and Western blot results showed that compared with the normal group， the model group displayed increased content of 5-lipoxygenase （5-LO） and peroxisome proliferator-activated receptor γ （PPARγ） in the femoral head （P<0.01）. Compared with the model group， medium- and high-dose JPHGP reduced the content of 5-LO and PPARγ （P<0.05， P<0.01）. ConclusionJPHGP can restore the levels of oxidized lipid metabolites by regulating the 5-LO-PPARγ axis to treat SONFH in rats. Relevant studies provide experimental evidence for the efficacy mechanism of JPHGP in the treatment of SONFH.

Objective To investigate the impact of DNA damage-regulated autophagy factor 2(DRAM2)on the proliferation and migration of non-small cell lung cancer(NSCLC)cells through tumor protein p53(p53)and autophagy.Methods DRAM2 gene was knocked down using lentiviral technology to establish NSCLC cell lines,and autophagy markers were detected by immunofluorescence and Western blot.CCK8 and Transwell assays were used to detect cell proliferation and migration.The effects of autophagy activation and p53 knockdown on autoph-agy and functions of DRAM2?knockdown cells were examined.Results Knockdown of DRAM2 inhibited NSCLC cells,with upregulation of p62 expression(P<0.05)and decreased level of LC3?Ⅱ(P<0.05).Knockdown of DRAM2 suppressed the proliferation(P<0.001)and migration(P<0.001)of NSCLC cells.Activation of auto?phagy partially reversed the inhibitory effects of DRAM2 knockdown on cell proliferation(P<0.01)and migration(P<0.01).When DRAM2 and p53 were knocked down simultaneously,autophagy,cell proliferation(P<0.05)and migration abilities(P<0.001)were restored.Conclusions Knockdown of DRAM2 inhibits the proliferation and migration of lung cancer cell line A549,providing a potential intervention direction for the devel?opment of therapeutic strategies.