ObjectiveTo investigate the efficacy and safety of Kaixuan Jiedu compatibility and the decomposed prescriptions in the treatment of psoriasis. MethodsThirty Balb/c mice were randomly grouped as follows （n=6）： normal， model， Kaixuan Jiedu （KXJD， 15.21 g·kg^-1）， Kaixuan （KX， 3.08 g·kg^-1）， and Jiedu （JD， 12.13 g·kg^-1）. Except the normal group， the rest groups were modeled for psoriasis-like skin lesions by topical application of imiquimod， and samples were collected after 7 days of continuous intervention. Mice were photographed at the lesion site during modeling and before sampling and the psoriasis area and severity index （PASI） was calculated. Hematoxylin-eosin （HE） staining was used to observe pathological changes in the lesions and measure the epidermal thickness. Mice were photographed and observed for the tortuous dilation of dermal capillaries. The expression of vascular endothelial growth factor （VEGF）， platelet-endothelial cell adhesion molecule （CD31）， proliferating cell nuclear antigen （Ki67）， and cytokeratin 10 （CK10） in the epidermal tissue was detected by immunohistochemistry. Immunofluorescence assay was employed to determine the expression of Claudin-1 and Occludin. Real-time PCR was employed to determine the mRNA levels of interleukin-17A （IL-17A） and interleukin-23 （IL-23）. The spleen and thymus were photographed and weighed， and the spleen and thymus indices were calculated. The safety of the treatment was assessed by automatic biochemistry testing of the serum， liver， and kidney functions and by HE staining of the liver， kidney and spleen. ResultsCompared with that of the normal group， the skin of the model group showed erythema， infiltration， and typical psoriasis-like changes， tortuous dilation of dermal capillaries， hyperkeratosis in epidermal cells， acanthosis， massive lymphocytic infiltration in the dermis， impaired barrier function， increased expression of VEGF， CD31， Ki67， and CK10 （P<0.01）， reduced expression of Claudin-1 and Occludin （P<0.01） in the epidermis， and up-regulated mRNA levels of IL-17A and IL-23 （P<0.01）. In addition， the mice in the model group showed spleen enlargement， thymus atrophy， increased spleen index， and decreased thymus index （P<0.01）. Compared with the model group， KXJD and JD reduced psoriasis-like skin lesions， inhibited the tortuous dilation of dermal capillaries， reduced the expression of VEGF， CD31， Ki67， and CK10 （P<0.01）， increased the expression of claudin-1 （P<0.01）， and down-regulated the mRNA levels of inflammatory factors （P<0.01）. Moreover， the KXJD group outperformed the JD group. The JD group showed no significant difference from the model group regarding the spleen index， thymus index， and Occludin expression. The psoriasis indicators in the KX group were not significantly different from those in the model group. ConclusionKXJD and JD can reduce the symptoms of local skin lesions of psoriasis， which is manifested as different inhibition degrees of the proliferation and differentiation of keratin-forming cells， tortuous dilation of dermal capillaries， and inflammatory reactions， as well as the protection of the skin barrier. Moreover， KXJD outperformed JD. KX alone did not significantly reduce psoriasis lesions in mice. KXJD and the decomposed prescriptions are safe and effective， causing no obvious liver and kidney injuries.

ObjectiveTo investigate the efficacy and safety of Kaixuan Jiedu compatibility and the decomposed prescriptions in the treatment of psoriasis. MethodsThirty Balb/c mice were randomly grouped as follows （n=6）： normal， model， Kaixuan Jiedu （KXJD， 15.21 g·kg^-1）， Kaixuan （KX， 3.08 g·kg^-1）， and Jiedu （JD， 12.13 g·kg^-1）. Except the normal group， the rest groups were modeled for psoriasis-like skin lesions by topical application of imiquimod， and samples were collected after 7 days of continuous intervention. Mice were photographed at the lesion site during modeling and before sampling and the psoriasis area and severity index （PASI） was calculated. Hematoxylin-eosin （HE） staining was used to observe pathological changes in the lesions and measure the epidermal thickness. Mice were photographed and observed for the tortuous dilation of dermal capillaries. The expression of vascular endothelial growth factor （VEGF）， platelet-endothelial cell adhesion molecule （CD31）， proliferating cell nuclear antigen （Ki67）， and cytokeratin 10 （CK10） in the epidermal tissue was detected by immunohistochemistry. Immunofluorescence assay was employed to determine the expression of Claudin-1 and Occludin. Real-time PCR was employed to determine the mRNA levels of interleukin-17A （IL-17A） and interleukin-23 （IL-23）. The spleen and thymus were photographed and weighed， and the spleen and thymus indices were calculated. The safety of the treatment was assessed by automatic biochemistry testing of the serum， liver， and kidney functions and by HE staining of the liver， kidney and spleen. ResultsCompared with that of the normal group， the skin of the model group showed erythema， infiltration， and typical psoriasis-like changes， tortuous dilation of dermal capillaries， hyperkeratosis in epidermal cells， acanthosis， massive lymphocytic infiltration in the dermis， impaired barrier function， increased expression of VEGF， CD31， Ki67， and CK10 （P<0.01）， reduced expression of Claudin-1 and Occludin （P<0.01） in the epidermis， and up-regulated mRNA levels of IL-17A and IL-23 （P<0.01）. In addition， the mice in the model group showed spleen enlargement， thymus atrophy， increased spleen index， and decreased thymus index （P<0.01）. Compared with the model group， KXJD and JD reduced psoriasis-like skin lesions， inhibited the tortuous dilation of dermal capillaries， reduced the expression of VEGF， CD31， Ki67， and CK10 （P<0.01）， increased the expression of claudin-1 （P<0.01）， and down-regulated the mRNA levels of inflammatory factors （P<0.01）. Moreover， the KXJD group outperformed the JD group. The JD group showed no significant difference from the model group regarding the spleen index， thymus index， and Occludin expression. The psoriasis indicators in the KX group were not significantly different from those in the model group. ConclusionKXJD and JD can reduce the symptoms of local skin lesions of psoriasis， which is manifested as different inhibition degrees of the proliferation and differentiation of keratin-forming cells， tortuous dilation of dermal capillaries， and inflammatory reactions， as well as the protection of the skin barrier. Moreover， KXJD outperformed JD. KX alone did not significantly reduce psoriasis lesions in mice. KXJD and the decomposed prescriptions are safe and effective， causing no obvious liver and kidney injuries.

This paper summarizes Professor SHI Zaixiang's clinical experience in treating high fever caused by sepsis using Chaihu Guizhi Ganjiang Decoction （柴胡桂枝干姜汤）. He holds that the key pathogenesis of sepsis involves constrained heat in the shaoyang and internal accumulation of water and fluids. The clinical manifestations such as high fever， chills， and alternating sensations of cold and heat are attributed to pathogenic heat constrained in the shaoyang. Meanwhile， soft tissue edema and serous cavity effusions are due to shaoyang dysfunction and internal water retention. In clinical practice， treating sepsis-related high fever requires addressing both the shaoyang-constrained heat and the associated edema and effusions. The therapeutic approach focuses on harmonizing the shaoyang and resolving internal fluids， using Chaihu Guizhi Ganjiang Decoction as the base formula with flexible modifications. Professor SHI emphasizes that this formula shows a rapid antipyretic effect， particularly in cases where multiple anti-infective treatments have failed.

ObjectiveTo observe the effect of gene mutation on the effectiveness of arsenic-containing Chinese herbal compound formulas in the treatment of myelodysplastic syndromes （MDS） of different traditional Chinese medicine （TCM） patterns， so as to provide the basis for the clinical application. MethodsClinical data of 442 MDS patients who were treated with arsenic-containing herbal compound formulas were retrospectively collected， including the baseline demographic and clinical characteristics of the patients. Based on the TCM four examinations， the patients were divided into the spleen-kidney deficiency group as well as the qi-yin deficiency group， and according to the results of the next-generation sequencing （NGS） test， they were divided into the group with and without gene mutation respectively. The influence of gene mutation on the clinical effectiveness of patients with different TCM patterns was analyzed， the baseline demographic and clinical characteristics of the patients with different outcomes of the two TCM patterns were compared， and multivariate Logistic regression analysis was conducted on the influencing factors of the effective rate of MDS patients with gene mutation. ResultsA total of 190 cases were included in the spleen-kidney deficiency group （119 cases with gene mutation） and 43 cases in the qi-yin deficiency group （23 cases with gene mutation）. No statistically significant differences were noted in effectiveness assessment， total effective rate， and total response rate between the spleen-kidney deficiency group and the qi-yin deficiency group （P＞0.05）. In the spleen-kidney deficiency group， the total effective rate of MDS with gene mutation was 65.55% （78/119）， which was lower than 80.28% （57/71） of MDS without gene mutation， with statistical significance （P = 0.033）， while no statistical differences in effectiveness assessment and total response rate were noted （P＞0.05）. In the qi-yin deficiency group， no statistical differences were observed in effectiveness assessment， total effective rate， and total response rate of the patients in with or without gene mutation （P＞0.05）. In the spleen-kidney deficiency group with gene mutation， the rate of complex karyotype （P = 0.031） and the mutation rate of CBL gene （P = 0.032） in the ineffective population were higher than those in the effective population， while the mutation rate of DDX41 gene in the effective population was higher than that in the ineffective population （P = 0.033）. No statistically significant differences were found in other gene mutations， age， gender distribution， number of gene mutations， bone marrow hyperplasia degree， blast cell range， reticular fiber tissue proliferation or not， and prognosis of chromosomal abnormalities between the effective and ineffective populations （P＞0.05）. In the qi-yin deficiency group with gene mutation， no statistically significant differences were found in various items between populations with different outcomes （P＞0.05）. Multivariate Logistic regression analysis showed that complex karyotype， CBL mutation， and DDX41 mutation were independently associated with the effective rate of MDS with spleen-kidney deficiency and gene mutation （P＜0.05）. DDX41 mutation was an independent protective factor in the spleen-kidney deficiency group （OR＞1）， while complex karyotype and CBL mutation were independent risk factors （OR＜1）. ConclusionThe arsenic-containing TCM compound formulas exhibited better effectiveness in MDS with spleen-kidney deficiency pattern without mutation； and in MDS with spleen-kidney deficiency pattern without complex karyotypes， CBL mutation， and with DDX41 mutations. Furthermore， DDX41 mutation was an independent protective factor in the spleen-kidney deficiency group， while complex karyotype and CBL mutation were independent risk factors. In MDS with qi-yin deficiency pattern， gene mutation-related factors showed no significant impact on the effectiveness of arsenic-containing TCM compound formulas.

ObjectiveTo investigate the effects and potential mechanisms of morning and evening fasting on postprandial lipid responses, a post hoc analysis based on a crossover randomized controlled trial was conducted to assess the effects of different fasting strategies on postprandial lipid metabolism in community residents in Shanghai. MethodsA total of 23 participants took part in a randomized crossover trial involving two intervention days: morning fasting and evening fasting, with a washout period of 6 days between intervention days. Two-way analysis of variance was used to test the differences in total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and the relative expression of circadian clock genes before and after the next meal under fasting. Wilcoxon rank sum tests were used to analyze the different metabolites between the two groups. Principal component analysis and Orthogonal partial least squares-discriminant analysis were conducted to evaluate the ability of metabolites to differentiate between morning fasting and evening fasting and identify the important differential metabolites. After adjusting for age, sex, and BMI, a partial correlation analysis was performed to identify metabolites associated with plasma lipids. In addition, important metabolites associated with plasma lipids were computed by pathway enrichment analysis. ResultsAfter evening fasting intervention, fasting TG level [(0.37±0.29) vs (0.27±0.18)] mmol·L^-1, fasting and postprandial change values in TC [(2.74±0.47) vs (2.51±0.27)] mmol·L^-1 and LDL-C [(1.32±0.38) vs (0.99±0.27)] mmol·L^-1 were significantly lower than those after morning fasting (P<0.05). While, change values of fasting LDL-C [(0.89±0.37) vs (1.14±0.37)] mmol·L^-1 and TG [(1.14±0.19) vs (1.28±0.17)] mmol·L^-1 were significantly higher than those after morning fasting intervention (P<0.05). After fasting intervention, the relative expression of AMPK, CRY1, CLOCK, MTNR1B, AANAT, and ASMT was correlated with the amount of plasma lipid changes (P<0.05). Specifically, CLOCK and AANAT were upregulated following evening fasting and downregulated after morning fasting. Among the 217 important differential metabolites, 111 were correlated with plasma lipids, and which were primarily enriched in the cysteine and methionine metabolism pathways (P<0.05). ConclusionCompared to morning fasting, evening fasting was more effective in improving postprandial lipid responses, indicating that an evening fasting window during intermittent fasting could be conducive to cardiovascular disease prevention in adults. Meanwhile, it is suggested that morning and evening fasting may affect lipid responses through circadian rhythm oscillations and the cysteine and methionine metabolism pathways.

Objective:To explore the longitudinal trajectory of sleep disorders and their influencing factors in newly diagnosed breast cancer patients, and provide theoretical basis for formulating intervention measures to improve sleep quality of breast cancer patients.Methods:A longitudinal study was conducted using convenience sampling to select newly diagnosed breast cancer patients from Shandong Provincial Third Hospital and Shandong First Medical University Affiliated Provincial Hospital from April 2023 to June 2024. General information questionnaires, the Pittsburgh Sleep Quality Index (PSQI), the Concerns About Recurrence Scale (CARS), and the Distress Disclosure Index (DDI) were used for the survey. The Kruskal-Wallis H test and generalized estimating equation models were used to examine sleep disorders and their influencing factors. Results:A total of 473 valid questionnaires were collected. Among the 473 newly diagnosed breast cancer patients, 435 were female and 38 were male, aged (49.5 ± 11.0) years old. The CARS score at admission was (3.00 ± 1.12) points, with concerns about death (0.71 ± 0.67) points and concerns about female characteristics (0.81 ± 0.72) points. The DDI score at admission was (27.00 ± 10.03) points. The PSQI scores at admission, discharge, and one month after discharge were (15.34 ± 3.05), (12.12 ± 3.01), and (10.13 ± 1.78) points, respectively, the difference was statistically significant ( H =33.19, P<0.05). The PSQI scores at these three time points were positively correlated with the CARS score and concerns about death and female characteristics ( r values were 0.42-0.79, all P<0.05), and negatively correlated with the DDI score ( r =-0.41, -0.37, -0.31, all P<0.05). The generalized estimating equation model showed that female gender ( β=1.35, 95% CI 0.27-2.30), education level of junior high school or below ( β=1.89, 95% CI 0.24-3.19), severe pain ( β=1.72, 95% CI 0.32-3.12), moderate pain ( β=2.51, 95% CI 0.37-4.66), invasive special cancer ( β=2.57, 95% CI 1.67-4.07), invasive non-special cancer ( β=2.11, 95% CI 1.98-3.12), partial understanding of the condition ( β=1.91, 95% CI 1.23-3.01), concerns about death ( β=1.61, 95% CI 0.17-2.78), and concerns about femininity ( β=1.34, 95% CI 0.37-2.15) positively predicted the sleep quality index in newly diagnosed breast cancer patients (all P<0.05). Non-invasive cancer ( β=-3.82, 95% CI -6.79--3.36), lack of understanding of the condition ( β=-3.96, 95% CI -7.09--4.62), and DDI score ( β=-1.45, 95% CI -2.14--0.15) negatively predicted the sleep quality index (all P<0.05). Conclusions:The overall sleep quality of newly diagnosed breast cancer patients is low, with the lowest at admission and gradual improvement at discharge and one month after discharge. Medical staff should pay attention to high-risk patients who are female, have lower education levels, higher pain scores, poorer pathological types, and partial understanding of their condition.

Objective:To explore the longitudinal trajectory of sleep disorders and their influencing factors in newly diagnosed breast cancer patients, and provide theoretical basis for formulating intervention measures to improve sleep quality of breast cancer patients.Methods:A longitudinal study was conducted using convenience sampling to select newly diagnosed breast cancer patients from Shandong Provincial Third Hospital and Shandong First Medical University Affiliated Provincial Hospital from April 2023 to June 2024. General information questionnaires, the Pittsburgh Sleep Quality Index (PSQI), the Concerns About Recurrence Scale (CARS), and the Distress Disclosure Index (DDI) were used for the survey. The Kruskal-Wallis H test and generalized estimating equation models were used to examine sleep disorders and their influencing factors. Results:A total of 473 valid questionnaires were collected. Among the 473 newly diagnosed breast cancer patients, 435 were female and 38 were male, aged (49.5 ± 11.0) years old. The CARS score at admission was (3.00 ± 1.12) points, with concerns about death (0.71 ± 0.67) points and concerns about female characteristics (0.81 ± 0.72) points. The DDI score at admission was (27.00 ± 10.03) points. The PSQI scores at admission, discharge, and one month after discharge were (15.34 ± 3.05), (12.12 ± 3.01), and (10.13 ± 1.78) points, respectively, the difference was statistically significant ( H =33.19, P<0.05). The PSQI scores at these three time points were positively correlated with the CARS score and concerns about death and female characteristics ( r values were 0.42-0.79, all P<0.05), and negatively correlated with the DDI score ( r =-0.41, -0.37, -0.31, all P<0.05). The generalized estimating equation model showed that female gender ( β=1.35, 95% CI 0.27-2.30), education level of junior high school or below ( β=1.89, 95% CI 0.24-3.19), severe pain ( β=1.72, 95% CI 0.32-3.12), moderate pain ( β=2.51, 95% CI 0.37-4.66), invasive special cancer ( β=2.57, 95% CI 1.67-4.07), invasive non-special cancer ( β=2.11, 95% CI 1.98-3.12), partial understanding of the condition ( β=1.91, 95% CI 1.23-3.01), concerns about death ( β=1.61, 95% CI 0.17-2.78), and concerns about femininity ( β=1.34, 95% CI 0.37-2.15) positively predicted the sleep quality index in newly diagnosed breast cancer patients (all P<0.05). Non-invasive cancer ( β=-3.82, 95% CI -6.79--3.36), lack of understanding of the condition ( β=-3.96, 95% CI -7.09--4.62), and DDI score ( β=-1.45, 95% CI -2.14--0.15) negatively predicted the sleep quality index (all P<0.05). Conclusions:The overall sleep quality of newly diagnosed breast cancer patients is low, with the lowest at admission and gradual improvement at discharge and one month after discharge. Medical staff should pay attention to high-risk patients who are female, have lower education levels, higher pain scores, poorer pathological types, and partial understanding of their condition.

Objective:To explore the optimization of surgical procedures for laryngotracheal stenosis and its effect analysis.Methods:The data of 32 patients with acquired laryngotracheal stenosis who received surgical treatment from October 2015 to December 2021 were analyzed retrospectively. The age ranged from 19 to 72 years, with an average of (34.0±9.0) years. The medical history ranged from 1 to 32 months (median 3 months). As for etiology, there were 30 cases of iatrogenic laryngotracheal stenosis, including 20 cases of tracheal intubation and 10 cases of tracheotomy (7 cases of percutaneous tracheotomy and 3 cases of traditional tracheotomy). There were 1 case of laryngotracheal trauma and 1 case of airway Penicillium marneffei infection. According to Myer-Cotton grading system, grade Ⅳ stenosis was found in 14 cases, including 12 cases involving trachea and 2 cases involving trachea and subglottic area.There were 18 cases of grade Ⅲ, all of which involved the cervical trachea 5 cases failed in operation in other hospitals. According to stenosis grading, course of disease, primary disease control and the patient′s general condition, the surgical plan was determined individually. The operations of end-to-end anastomosis, circumferential tracheal partial resection, T-tube placement and CO 2 laser tracheal scar resection were performed respectively. The recovery of airway function and perioperative complications were observed one year after operation. Results:End-to-end anastomosis was performed in 16 cases, and partial circumferential tracheal resection in 2 cases, and tracheal granulation (scar) resection by CO 2 laser in 2 cases and T-tube insertion in 12 cases. Eighteen cases which performed end-to-end anastomosis, partial resection of circumferential trachea in and 2 cases which performed laser tracheal scar resection were all recovered airway function at one stage. After 1 year, 19 cases were cured and 1 case was effective. Of 12 patients with T tube implantation, 11 cases were successfully extubated after 6-12 months, 7 cases were cured after 1 year, 2 cases were effective and 3 cases were ineffective. Among the 3 cases of failure, 2 cases were successfully extubated by sleeve resection and end-to-end anastomosis in the second stage, and the other case refused to accept other treatment methods and the T-tube was placed again, and the tube was blocked and the patient survived. During the follow-up period, the total cure rate was 87.5%, the effective rate was 9.4%, and the total extubation rate was 96.9%.The most common complication was subcutaneous emphysema, accounting for 78% (25/32), but no serious mediastinal emphysema or pneumothorax occurred. In the T-tube implantation group, granulation tissue grew in different degrees around the neck wound after operation, and improved or disappeared after 6-9 months. Anterior cervical tracheal fistula occurred in 4 cases of T-tube implantation group after extubation, which were cured by sealing the stoma. There were no complications such as severe bleeding or perioperative death. Conclusion:When there were various factors, the optimization of the surgical plan according to the degree of stenosis, the course of disease, the control of primary disease and the general condition was an important guarantee to improve the curative effect of laryngotracheal stenosis.

Background Lifestyle intervention or dietary modification has been the cornerstone of primary prevention and management of type 2 diabetes (T2D). Objective To investigate the associations of plant foods intake with the risk of incident T2D. Methods Based on a general population cohort, the Shanghai Suburban Adult Cohort and Biobank (SSACB), dietary data were collected for each participant in Songjiang District of Shanghai at enrollment with a validated Food Frequency Questionnaire (FFQ), and plant-based diet index (PDI), healthful plant-based diet index (hPDI), and unhealthful plant-based diet index (uPDI) were calculated. Incident T2D cases were identified according to physician diagnosis (fasting blood glucose ≥7.0 mmol·L⁻¹, or 2 h value during a 75-g oral glucose tolerance test ≥11.1 mmol·L⁻¹, or glycosylated hemoglobin ≥6.5%, or with typical symptoms of hyperglycemia or hyperglycemic crisis, accompanied by a random plasma glucose ≥11.1 mmol·L⁻¹) or medication records, obtained from the electronic information system for residents' medical insurance. Multivariable-adjusted Cox proportional hazards models and restricted cubic splines were used to evaluate the associations of foods from different sources with the risk of incident T2D. Results A total of 29016 participants [age at baseline (55.3±11.6) years] with a median follow-up duration of 5.688 years until 21 September 2022 were included. Plant foods (unprocessed) intake was associated with a decreased risk of incident T2D [HR (95%CI): 0.983 (0.969, 0.998)]. In comparison with participants in the highest quartile (≥859.3 g) of plant foods daily intake, the risk of incident T2D for those in the lowest quartile (<500.9 g) was higher [HR (95%CI): 1.250 (1.012, 1.544)]. No significant associations of animal foods [HR (95%CI): 1.006 (0.987, 1.026)] and processed foods [HR (95%CI): 0.978 (0.944, 1.014)] intakes were found with the risk of incident T2D. Replacing 50 g animal foods [HR (95%CI): 0.982 (0.968, 0.996)] or processed foods [HR (95%CI): 0.983 (0.969, 0.998)] with 50 g plant foods was associated with significantly decreased risks of incident T2D. Additionally, non-linear associations of PDI (P_nonlinear=0.023) and hPDI (P_nonlinear=0.016) with the risk of incident T2D were found in the SSACB. Conclusion Plant foods intake, especially healthful plant foods intake, is significantly associated with a decreased risk of incident T2D.

BACKGROUND:A large number of studies have confirmed that exosomes can promote osteogenesis and vascularization.However,simple exosome therapy has problems such as poor targeting,and the content of loaded molecules cannot reach the therapeutic concentration. OBJECTIVE:To load exosomes into injectable gluconolactone-sodium alginate β-tricalcium phosphate-polyethylene glycol hydrogel,and observe the effect of the hydrogel on peri-implant bone defect in vivo and in vitro. METHODS:Exosomes were extracted from bone marrow mesenchymal stem cells and wrapped in injectable gluconolactone-sodium alginate β-tricalcium phosphate-polyethylene glycol hydrogel.(1)In vitro experiment:The hydrogel loaded with exosomes and the hydrogel without exosomes were cocultured with endothelial progenitor cells,and exosomes uptake experiment,tubule formation experiment,cell proliferation,migration ability,and angiogenic gene detection were carried out.(2)In vivo experiment:Twelve male New Zealand white rabbits were used to prepare two standard implant cavities and corresponding bone defects in the long axis of one femur.A hydrogel loaded with exosomes was implanted in the bone defect after an implant was implanted in a cavity at the proximal end of the implant(experimental group),and an unloaded exosome hydrogel was implanted in the bone defect after an implant was implanted in a cavity at the distal end of the implant(control group).At 3,6 and 9 weeks after operation,bone defects with implants were removed and stained with hematoxylin-eosin staining and Masson staining.Simultaneously,osteogenic and angiogenic genes were detected at 9 weeks after operation. RESULTS AND CONCLUSION:(1)In vitro experiment:Exosomes could enter endothelial progenitor cells.The proliferation,migration,angiogenesis and gene(CD31,vascular endothelial growth factor and basic fibroblast growth factor)expression of endothelial progenitor cells in the hydrogel-loaded group were higher than those in the hydrogel-unloaded group(P<0.05).(2)In vivo experiment:Hematoxylin-eosin staining and Masson staining showed that at 3 weeks after operation,only a small amount of new bone was found in the two groups,and the material was partially degraded.At 6 weeks after operation,the amount of new bone in the two groups increased,and a large amount of new bone was found in the experimental group,with obvious calcium deposition.At 9 weeks after operation,compared with the control group,a large number of bone trabeculae thicker than mature were found in the experimental group,calcium salt deposition was more obvious,and a large number of osteoblasts were found around the bone trabeculae.The protein expressions of CD31,vascular endothelial growth factor,basic fibroblast growth factor,bone morphogenetic protein 2,type I collagen and osteocalcin in the experimental group were higher than those in the control group at 9 weeks after operation(P<0.05).(3)The exosome-loaded gluconolactone-sodium alginate β-tricalcium phosphate-polyethylene glycol hydrogel could promote the proliferation,migration and angiogenic differentiation of endothelial progenitor cells and promote the repair and regeneration of bone defects around implants.