1.Herbal Textual Research on Patriniae Herba in Famous Classical Formulas
Yu SHI ; Zhen ZENG ; Feng ZHOU ; Yihan WANG ; Yanmeng LIU ; Yang YANG ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):248-257
By consulting ancient and modern literature, this article systematically reviews and verifies the historical evolution of the herbal medicine known as Baijiang across various dimensions, including name, origin, scientific name verification, medicinal parts, production area, quality, harvesting and processing, as well as its nature, taste, and therapeutic effects, in order to provide a reference for the development and utilization of famous classical formulas containing Patriniae Herba. Patriniae Herba has a long history of use. It derives its name from the distinctive musty odor of its roots, which resembles spoiled soy sauce. However, due to its alias Kucai, there has been much confusion with other plants. Since the Ming dynasty, various plants have been used interchangeably as Baijiang. Herbal textual research showed that Patriniae Herba was first recorded in Shennong Bencaojing, and throughout history, Baijiang has been recognized as its standard name, though it has also been known by alternative names such as Luchang, Lujiang, and Suanyi. The main sources used throughout the ages were Patrinia scabiosaefolia or P. villosa, which is consistent with the 1977 edition of the Pharmacopoeia of the People's Republic of China. However, while the roots were traditionally used medicinally, the whole plant is now more commonly used in modern practice. In addition, the whole plants of Thlaspi arvense from the Cruciferae family and Sonchus brachyotus from the Compositae family are commonly used as regional substitutes for Baijiang. According to ancient records, Patriniae Herba was primarily found in Jiangxia(present-day eastern Hubei province) and Jiangdong(the region south of the lower reaches of the Yangtze River), but modern literature shows that it is distributed throughout the country without a distinct geographical origin. In ancient times, the roots were harvested in August and sun-dried, today, the whole plant is typically dug up in summer or autumn and sun-dried. In recent times, the quality has been summarized as being best when the roots are long, the leaves are abundant and green, and the aroma is strong. Regarding the processing, ancient methods often involved baking(drying over fire), while modern methods typically involve removing impurities, washing, and then cutting and drying the segments. The effects of Patriniae Herba are to clear heat and detoxify, eliminate blood stasis and drain pus. During the Han and Northern and Southern dynasties, it was used to treat skin diseases caused by heat, abscesses, postpartum diseases, and rheumatism, during the Five dynasties period, its therapeutic applications expanded to include diseases of the five senses, and by the modern era, conditions such as neurasthenia and insomnia were added. Regarding its properties and taste, it was recorded as bitter and neutral during the Han dynasty. By the Tang dynasty, it was slightly cold, with a taste of acrid and bitter. During the Yuan and Ming dynasties, it was mostly slightly cold and neutral, with a bitter and salty taste. In the Qing dynasty and modern times, it was mostly bitter and neutral, and in contemporary times, it has evolved to a taste of acrid, bitter, and cool. Based on the results of this study, it is recommended that when developing and utilizing famous classical formulas containing Patriniae Herba, one should select the entire herb of the historically mainstream sources, P. scabiosaefolia or P. villosa from the Valerianaceae family, and choose the processing method according to the prescription requirements. It is recommended to use raw products without specific requirements.
2.Herbal Textual Research on Patriniae Herba in Famous Classical Formulas
Yu SHI ; Zhen ZENG ; Feng ZHOU ; Yihan WANG ; Yanmeng LIU ; Yang YANG ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):248-257
By consulting ancient and modern literature, this article systematically reviews and verifies the historical evolution of the herbal medicine known as Baijiang across various dimensions, including name, origin, scientific name verification, medicinal parts, production area, quality, harvesting and processing, as well as its nature, taste, and therapeutic effects, in order to provide a reference for the development and utilization of famous classical formulas containing Patriniae Herba. Patriniae Herba has a long history of use. It derives its name from the distinctive musty odor of its roots, which resembles spoiled soy sauce. However, due to its alias Kucai, there has been much confusion with other plants. Since the Ming dynasty, various plants have been used interchangeably as Baijiang. Herbal textual research showed that Patriniae Herba was first recorded in Shennong Bencaojing, and throughout history, Baijiang has been recognized as its standard name, though it has also been known by alternative names such as Luchang, Lujiang, and Suanyi. The main sources used throughout the ages were Patrinia scabiosaefolia or P. villosa, which is consistent with the 1977 edition of the Pharmacopoeia of the People's Republic of China. However, while the roots were traditionally used medicinally, the whole plant is now more commonly used in modern practice. In addition, the whole plants of Thlaspi arvense from the Cruciferae family and Sonchus brachyotus from the Compositae family are commonly used as regional substitutes for Baijiang. According to ancient records, Patriniae Herba was primarily found in Jiangxia(present-day eastern Hubei province) and Jiangdong(the region south of the lower reaches of the Yangtze River), but modern literature shows that it is distributed throughout the country without a distinct geographical origin. In ancient times, the roots were harvested in August and sun-dried, today, the whole plant is typically dug up in summer or autumn and sun-dried. In recent times, the quality has been summarized as being best when the roots are long, the leaves are abundant and green, and the aroma is strong. Regarding the processing, ancient methods often involved baking(drying over fire), while modern methods typically involve removing impurities, washing, and then cutting and drying the segments. The effects of Patriniae Herba are to clear heat and detoxify, eliminate blood stasis and drain pus. During the Han and Northern and Southern dynasties, it was used to treat skin diseases caused by heat, abscesses, postpartum diseases, and rheumatism, during the Five dynasties period, its therapeutic applications expanded to include diseases of the five senses, and by the modern era, conditions such as neurasthenia and insomnia were added. Regarding its properties and taste, it was recorded as bitter and neutral during the Han dynasty. By the Tang dynasty, it was slightly cold, with a taste of acrid and bitter. During the Yuan and Ming dynasties, it was mostly slightly cold and neutral, with a bitter and salty taste. In the Qing dynasty and modern times, it was mostly bitter and neutral, and in contemporary times, it has evolved to a taste of acrid, bitter, and cool. Based on the results of this study, it is recommended that when developing and utilizing famous classical formulas containing Patriniae Herba, one should select the entire herb of the historically mainstream sources, P. scabiosaefolia or P. villosa from the Valerianaceae family, and choose the processing method according to the prescription requirements. It is recommended to use raw products without specific requirements.
3.SIRT5 Potentiates Hepatocarcinogenesis by Modulating Protein Acylation in Mice
Yu ZHANG ; Feng-Rui REN ; Jia-Yun LI ; Xiang-Yu CHEN ; Zi-Yi WANG ; Qi SUN ; Jun-Cheng ZHAO ; Ye ZHANG ; Zhen HUANG ; Hao HU ; Tao-Tao WEI ; Min XIAO
Progress in Biochemistry and Biophysics 2026;53(6):1712-1722
ObjectiveHepatocellular carcinoma (HCC) represents 90% of all primary liver cancers. The main risk factors associated with HCC include viral hepatitis (B and/or C), alcohol abuse, and metabolic dysfunction-associated steatotic liver disease (MASLD), which progressively advance to liver fibrosis, cirrhosis, and ultimately evolve into HCC. Surgical resection represents the most effective treatment for HCC, while recent advances in immunotherapy, including immune checkpoint inhibitors and adoptive cell therapies, have provided improved treatment prospects for patients with unresectable HCC. However, the complex metabolic heterogeneity of HCC limits the therapeutic efficacy. Metabolic intermediates acyl-CoA not only provide energy and substrates for numerous biochemical reactions but also serve as donors for protein lysine acylation, a major class of post-translational modification (PTM). Therefore, a deeper understanding of the molecular mechanisms underlying protein lysine acylation and hepatocarcinogenesis is urgently needed. MethodsThe levels of protein lysine acylation and silence information regulator 5 (SIRT5) expression levels in clinical HCC samples were analyzed by Western blot. Quantitative malonylome and succinylome of HCC samples were analyzed by antibody-based affinity enrichment coupled with tandem mass spectrometry. The proliferation of HCC cells was analyzed with Cell Counting Kit-8 (CCK-8) assays, the apoptosis was quantified by Annexin V-FITC/propidium iodide (PI) staining coupled with flow cytometry, and the ability of cells to migrate was assayed by Transwell assays. The enzymatic activity of glutathione S-transferase Mu 1 (GSTM1) was quantified. Transgenic mice with hepatic overexpression of SIRT5 were constructed using CRISPR-Cas9, and primary hepatocarcinogenesis was induced by administration of diethylnitrosamine. ResultsWestern blot analysis indicated that the expression level of SIRT5 was elevated in clinical samples from HCC patients, and the levels of lysine malonylation, glutarylation, and succinylation were significantly reduced in HCC tissues. Knockout of SIRT5 in MHCC-97H and MHCC-97L hepatoma cells suppressed cell proliferation, and increased the percentage of apoptotic cells significantly. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses of the differentially malonylome and succinylome of HCC samples revealed significant enrichment in two major classes of biological processes: core energy metabolism (e.g., glycolysis/gluconeogenesis, tricarboxylic acid metabolic process, fatty acid beta oxidation) and detoxification and oxidative stress response (e.g., response to toxic substance, chemical carcinogenesis, reactive oxygen species (ROS)). SIRT5 removes malonylation from lysine residues in GSTM1 and restores its detoxification activity, which is crucial for the survival of hepatocytes under stressed conditions. More importantly, in vivo experiment indicated that hepatic-specific overexpression of SIRT5 in mice accelerated diethylnitrosamine-induced liver fibrosis and hepatocarcinogenesis, indicating the critical role of SIRT5 in HCC progression. ConclusionThis study highlights the previously unrecognized SIRT5-GSTM1 axis as a key regulator in hepatocarcinogenesis, and suggests a potential target for the treatment of patients with HCC.
4.The first record of Anopheles messeae (Diptera: Culicidae) parasitized by water mites in China
Xue-ru CHEN ; Wen-zhen YAO ; Yu-hao LI ; Gui-chang LI ; Tao MENG ; Qun-ling FENG ; Xin-hui LIU ; Li-hong QIAO ; Xiang-ting WU ; Xue-feng ZHANG ; Cheng-lin LI ; Xue-cheng DONG ; Da-wei WANG ; Xiao-yan SI ; Yu-hong GUO
Acta Parasitologica et Medica Entomologica Sinica 2026;33(1):53-57
Objective This study reports on the obligatory parasitism of water mites Arrenurus sp. on Anopheles messeae at the Manzhouli Port, Inner Mongolia, China. Methods Duing July 2024, a survey on the mosquito diversity was conducted at the Manzhouli Port. Captured mosquitoes and their ectoparasites were identified to species level. Results A total of 1840 adult mosquitoes were collected, representing species from three genera: Culex(Cx. modestus, Cx. pipiens pallens), Aedes(Ae. dorsalis, Ae. flavidorsalis, Ae. flavescens), and Anopheles (An. messeae). Among all the mosqutioes specimens,3 out of 150 captured An. messeae were found to carry ectoparasitic mites, with number of 2,4,27 mites separately. Morphological and molecular identification reached the same result as water mites(Hydrachnidiae, Hydracrina). COI gene sequence showed 94% similarity with the closest species Arrenurus truncatellus. Conlusions Literature review suggests water mites are host-specific parasitism of mosquito species and herein with the first record of Arrenurus sp. parasiting on An. Messeae in the most high-latitude region globally.
5.Relationship between C-reactive protein/albumin ratio and severity in patients with severe pneumonia and its predictive value for 28-day mortality risk
Yu-Ru FU ; Zhen-Kang SUN ; Cheng LIU ; Dong-Feng LI
Medical Journal of Chinese People's Liberation Army 2025;50(3):309-317
Objective To explore the relationship between C-reactive protein/albumin ratio(CAR)and the disease severity in patients with severe pneumonia,and its predictive value for 28-day mortality risk.Methods A retrospective analysis was conducted on 152 patients with severe pneumonia admitted to Fuyang People's Hospital from January 2020 to January 2022.They were divided into non-critical illness group(n=51),critical illness group(n=63),and extremely critical illness group(n=38)based on the disease severity.The clinical data such as age and gender of patients was collected,and Pearson correlation analysis was used to explore the correlation between CAR and the severity of illness[determined by Acute Physiology and Chronic Health Evaluation Ⅱ(APACHE Ⅱ)score].Multivariate logistic regression was employed to identify independent influencing factors of the severity of illness.According to the survival status of patients after 28 days of treatment,they were divided into survival group(n=107)and death group(n=45).CAR was categorized into quintiles(Q1-Q5),and multivariate logistic regression analysis was conducted to explore the correlation between CAR and 28-day mortality risk in severe pneumonia patients.A restricted cubic spline(RCS)model was used to analyze the dose-response relationship between CAR and mortality risk.The predictive value of CAR and related indicators for patient mortality risk was evaluated using the receiver operating characteristic curve(ROC).Results CAR was significantly positively correlated with the severity of the disease(APACHE Ⅱ score)(r=0.716,P<0.05).Neutrophil/lymphocyte ratio(NLR),blood lactate(Lac),and high CAR were independent risk factors for the disease severity in patients with severe pneumonia(P<0.05).After adjusting for confounding factors,the mortality risk increased with the increase of CAR(P<0.05).Subgroup analysis of the screened confounding factors revealed that the correlation between CAR and 28-day mortality risk in severe pneumonia patients remained stable across different APACHE Ⅱ scores,GCS scores,SOFA scores,white blood cell counts(WBC),neutrophils(NEU),red cell volume distribution width(RDW),procalcitonin(PCT),and Lac,with interactions observed between NLR and Lac subgroups(P<0.05).The RCS model indicated that there was no non-linear dose-response relationship between CAR and 28-day mortality risk in patients with severe pneumonia of different genders.ROC curve analysis showed that CAR,Lac,and NLR had good predictive value for 28-day mortality in severe pneumonia patients,with the combined predictive efficacy being significantly higher than that of individual indicators.Conclusion There is a close relationship between CAR and the progression and prognosis of severe pneumonia,making it a new approach to assessing the severity of illness and predicting mortality risk in patients.
6.Research progress on the role of macrophage polarization in drug-induced liver injury
Guo-Jing XING ; Li-Fei WANG ; Long-Long LUO ; Yuan DENG ; Zhen WANG ; Xiao-Feng ZHENG ; Xiao-Hui YU ; Jiu-Cong ZHANG
Medical Journal of Chinese People's Liberation Army 2025;50(11):1478-1484
Drug-induced liver injury(DILI)is a common adverse drug reaction in clinical practice,which can lead to acute liver failure and even death in severe cases.In recent years,with the continuous introduction of new drugs and the expansion of their usage,the incidence and mortality rates of DILI have shown an upward trend,posing significant challenges to public health and clinical treatment.Macrophages,as a crucial component of the innate immune system,exhibit high plasticity and heterogeneity.They can polarize into pro-inflammatory M1 type or anti-inflammatory M2 type in response to microenvironmental signals.Research has demonstrated that macrophage polarization plays a central regulatory role in the occurrence and progression of DILI by influencing various processes such as inflammatory responses,cell apoptosis,and tissue repair.This review focuses on elucidating the regulatory mechanisms and roles of macrophage polarization in DILI,providing a theoretical framework for developing precise immunotherapeutic strategies.
7.Imaging assessment of osteosarcoma chemotherapy efficacy based on multi-scale lesion attention network
Jie ZANG ; Ze-Qun SONG ; Zhen-Yu TANG ; Fang-Zhou HE ; Chao-Wei DING ; Ling-Feng WANG ; Xiao-Dong TANG
Acta Anatomica Sinica 2025;56(1):30-36
Objective To propose a high-precision deep learning-based image assessment method of osteosarcoma chemotherapy efficacy for clinical treatment,as existing methos have low accuracy of osteosarcoma assessment.Methods The low incidence of osteosarcoma led to the small scale of its imaging data and the problem of imbalance in data categories.This study combined deep learning with clinical medical information,combined the bone sarcoma generation module of BoneGAN and the scale lesion information capture module,and proposed OMLA-Net,a deep learning assessment network for chemotherapy effect of bone sarcoma based on multi-scale lesion attention network,which achieved computer-aided bone tumor assessment with integrated data augmentation and focused lesion information through pre-training and generalized loss training.Results In this study,40 cases of osteosarcoma MRI data were used as the basis for the comparison test on the generated dataset,and the OMLA-Net assessment outperformed the SOTA method Conv-LSTM-GAN in terms of the assessment effects such as accuracy and F1 scores,and the difference was statistically significant(Bootstrap statistical method P<0.05);the subsequent K-fold cross-validation ablation experiments further demonstrated the effectiveness of each module proposed by OMLA-Net.Conclusion OMLA-Net can effectively perform the impact assessment of chemotherapy effect on osteosarcoma,which provides a new idea for subsequent clinical application.
8.Clinical effects of Jiawei Yanghe Decoction combined with Budesonide and Formoterol Fumarate Powder for Inhalation on patients with mild to moderate bronchial asthma in chronic and persistent period
Yu WANG ; Hui-yong ZHANG ; Lin-jin CHEN ; Zheng-yi ZHANG ; Cui LI ; Jie CUI ; Ben SU ; Ping BAI ; Zi-feng MA ; Zhen-hui LU
Chinese Traditional Patent Medicine 2025;47(1):81-86
AIM To explore the clinical effects of Jiawei Yanghe Decoction combined with Budesonide and Formoterol Fumarate Powder for Inhalation on patients with mild to moderate bronchial asthma in chronic and persistent period.METHODS One hundred and eighteen patients were randomly assigned into control group(59 cases)for 4-week administration of Budesonide and Formoterol Fumarate Powder for Inhalation,and observation group(59 cases)for 4-week administration of both Jiawei Yanghe Decoction and Budesonide and Formoterol Fumarate Powder for Inhalation.The changes in clinical effects,ACT score,bronchial asthma control rate,pulmonary function indices(FEV1,PEF,FEV1%,PEF%),inflammatory indices(EOS,EOS%,FeNO),TCM syndrome score and incidence of adverse reactions were detected.RESULTS The observation group demonstrated higher total effective rate than the control group(P<0.05).After the treatment,the two groups displayed increased bronchial asthma control rate,ACT score,PEF(P<0.05),and decreased TCM syndrome score(P<0.05),especially for the observation group(P<0.05);the observation group exhibited increased FEV1,FEV1%,PEF%(P<0.05),among which FEV1,PEF%were higher than those in the control group(P<0.05);the observation group showed decreased inflammatory indices(P<0.05),among which FeNO was lower than that in the control group(P<0.05).No significant difference in incidence of adverse reactions was found between the two groups(P>0.05).CONCLUSION For the patients with mild to moderate bronchial asthma in chronic and persistent period,Jiawei Yanghe Decoction combined with Budesonide and Formoterol Fumarate Powder for Inhalation can safely and effectively alleviate clinical symptoms,improve pulmonary functions,airway inflammatory reactions,and enhance bronchial asthma control rate.
9.Synthesis and Applications of Indole-3-formylhydrazine Modified Pyrene Schiff Base Compound as Copper Ion Fluorescence Probe
Mu-Xi WANG ; Zhen-Yu HUANG ; Xiao-Feng LIN ; Xiao-Lan LEI ; Jian SUN ; Li-Jun MA
Chinese Journal of Analytical Chemistry 2025;53(7):1108-1117
In this work,a fluorescent probe PIN was synthesized using indole-3-carbohydrazide and pyrenecarboxaldehyde as raw materials.PIN showed weak fluorescence emission in aqueous solution with acetonitrile volume fraction of 70%.However,when Cu2+was added to this aqueous solution of PIN,a new fluorescence emission peak appeared at 495 nm,and the intensity of this peak gradually increased with the increase of concentration of Cu2+,and also caused a significant change in the fluorescence color of the solution.In contrast,the addition of 15 kinds of other common metal ions did not cause such change.The detection limit of PIN for Cu2+was 78.7 nmol/L,which was much lower than the maximum permitting level of Cu2+in drinking water in hygienic standard for drinking water in China.Therefore,PIN was a highly selective and sensitive fluorescence-enhanced probe for Cu2+.Meanwhile,the addition of Cu2+could also cause a new absorption peak at 440 nm in the ultraviolet-visible absorption spectrum of the aqueous solution of PIN,and meanwhile the colorless PIN solution changed into yellow,exhibiting the performance of PIN as a colorimetric probe for Cu2+.By fitting with the Levenberg-Marquardt algorithm equation,the binding ratio of PIN to Cu2+was 2:1,and the binding constant was 3.42×1012 L2/mol2.In addition,the binding mode of PIN with Cu2+was explored by using proton nuclear magnetic resonance(1H NMR)titration experiments and density functional theory simulations.The results showed that the addition of Cu2+could cause the aggregation of PIN molecules to form excimers,thus showing highly selective recognition.Finally,PIN was made into a simple test strip,which could achieve rapid and convenient fluorescence detection of Cu2+in actual water samples.
10.The influence of exosomes derived from bone marrow mesenchymal stem cells during osteogenic differentiation on the polarization of Raw264.7 macrophages and bone regeneration
Guanqi ZHEN ; Feng WU ; Enming YU ; Jinglong YAN ; Chengchao SONG
Chinese Journal of Orthopaedics 2025;45(19):1261-1270
Objective:To investigate the effects of exosomes secreted by bone marrow mesenchymal stem cells (BMSCs) during osteogenic differentiation on the polarization of Raw264.7 macrophages and to elucidate the underlying mechanisms.Methods:PBS, uninduced BMSCs conditioned medium (CM), and osteogenic induction BMSCs CM for 7 d, 14 d, and 21 d were respectively added to Raw264.7 macrophages. After 48 h of treatment, Western blotting was used to detect and compare the expression of M1 markers of macrophages [inducible nitric oxide synthase (iNOS) and CD86] and M2 markers of macrophages [arginase-1 (ARG-1) and CD163] in each group. In addition, Raw264.7 macrophages were divided into three groups: the PBS group (only PBS added), the BMSCs-exo group (exosomes derived from uninduced BMSCs were added), and 7D-BMSCs-exo (exosomes derived from BMSCs were added after 7 days of osteogenic induction). The absorbance values of Raw264.7 cells in each group at 24 h, 48 h and 72 h were detected by an enzyme-linked immunosorbent assay (ELISA) reader. Western blotting was performed to assess changes of M1 or M2 marker proteins in Raw264.7 macrophages treated by exosome. The supernatants of the three groups of Raw264.7 macrophages were then co-cultured with BMSCs. Alizarin Red staining was used to quantify the formation of mineralized nodules, and alkaline phosphatase (ALP) staining was used to evaluate the osteogenic activity, and the expression levels of osteogenesis-related proteins Runx2, ALP, osteopontin (OPN), and osteocalcin (OCN) were detected. The migration ability of endothelial progenitor cells (EPCs) was detected by scratch assay for migration distance, and the angiogenesis ability was detected by in vitro tube formation assay for the number of vascular rings formed. The expressions of vascular endothelial growth factor (VEGF)-A and platelet-derived growth factor (PDGF) were detected by Western blot. The activation of the MAPK signaling pathway was evaluated by measuring phosphorylated and total P38 and ERK1/2 levels.Results:Western blot analysis showed that CM from BMSCs after 7 days of osteogenic induction (7D-BMSCs-CM) induced the strongest M2 polarization in macrophages. Compared with the PBS group, 7D-BMSCs-CM induced the most significant polarization of Raw264.7 macrophages to the M2 type, and increased ARG-1 and CD163 expression to 1.36±0.09 and 1.69±0.09, respectively ( P<0.05), while decreasing iNOS and CD86 to 0.21±0.03 and 0.29±0.03 ( P<0.05). The absorbance values of macrophages in the 7D-BMSCs-exo group were significantly higher than those in the PBS group at 24 h, 48 h, and 72 h ( P<0.05). Compared with BMSCs-exo group, 7D-BMSCs-exo upregulated the expressions of CD163 and ARG-1 while inhibited the expressions of iNOS and CD86 ( P<0.05). Alizarin red staining showed enhanced mineral deposition and a higher degree of mineralization in the 7D-BMSCs-exo group, the staining intensity of ALP also increased simultaneously, the Western-blot results showed that the protein expressions of Runx2, ALP, OPN and OCN were respectively higher than those in the PBS group ( P<0.05). The results of the scratch assay showed that the relative migration distance of EPCs cells in the 7D-BMSCS-exo group at 24 h reached 2.30±0.05 μm, which was higher than that in the PBS group 1.10±0.02 μm ( P<0.05). The Tube formation experiment showed that the number of vascular rings in the EPCs group was higher than that in the PBS group (30.3±2.5 and 15.0±1.0, P<0.05), and the protein expressions of VEGF-A and PDGF were upregulated. Furthermore, the levels of phosphorylated P38 and ERK1/2 were significantly reduced in the 7D-BMSCs-exo group 0.40±0.06 and 0.25±0.06 compared with the PBS group ( P<0.05). Conclusions:Exosomes secreted by BMSCs during osteogenic differentiation promote the M2 polarization of Raw264.7 macrophages, with the most pronounced effect observed at the 7th day. M2-polarized macrophages, in turn, enhance the osteogenic differentiation of BMSCs and the angiogenic capacity of EPCs. These processes are closely associated with the suppression of the MAPK signaling pathway.


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