1.Mechanism of Yuzhi Zhixue Granules in treating polycystic ovary syndrome with insulin resistance in rats via metabolomics and proteomics.
Cong-Hui ZHANG ; Hai-Xin XIANG ; Xiu-Wen WANG ; He XIAO ; Fang-Jiao WEI ; Jing-Chun YAO ; En-Li WANG
China Journal of Chinese Materia Medica 2025;50(12):3368-3376
Metabonomics and proteomics were employed to investigate the mechanism of Yuzhi Zhixue Granules in treating polycystic ovary syndrome with insulin resistance(PCOS-IR). The disease model was established by feeding a high-fat diet and gavage of letrozole solution and it was then treated with different doses of Yuzhi Zhixue Granules. The therapeutic effect of Yuzhi Zhixue Granules was evaluated based on the body mass, homeostasis model assessment of insulin resistance and insulin sensitivity index, serum levels of adipokines, and histopathological changes of rats. Metabolomics and proteomics were employed to find the action pathways of Yuzhi Zhixue Granules. The results showed that Yuzhi Zhixue Granules reduced the body mass, improved the insulin sensitivity and aromatase activity, improved the levels of leptin, adiponectin and other adipokines, and alleviated insulin resistance, histopathological changes, and metabolic disorders in PCOS-IR rats. Metabolomics results revealed 14 metabolites with altered levels in the ovarian tissue, which were closely related to glutathione metabolism and pyruvate metabolism. Proteomics results showed that the therapeutic effect of Yuzhi Zhixue Granules was mainly related to the adipokine, adenosine 5'-monophosphate(AMP)-activated protein kinase(AMPK), phosphatidylinositol 3-kinase/protein kinase B(PI3K/Akt), forkhead box protein O(FoxO), and mechanistic target of rapamycin(mTOR) signaling pathways. Western blot results showed that compared with the model group, Yuzhi Zhixue Granules treatment decreased the p-AMPK/AMPK and p-FoxO1/FoxO1 levels, increased the p-mTOR/mTOR level, and up-regulated the expression level of recombinant glucose transporter 4(GLUT4). Yuzhi Zhixue Granules can balance amino acid metabolism and pyruvate metabolism by regulating the AMPK/mTOR/FoxO/GLUT pathway to maintain the homeostasis of the ovarian environment and alleviate insulin resistance, thus treating PCOS-IR.
Animals
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Female
;
Insulin Resistance
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Polycystic Ovary Syndrome/genetics*
;
Drugs, Chinese Herbal/administration & dosage*
;
Rats
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Metabolomics
;
Proteomics
;
Rats, Sprague-Dawley
;
Humans
;
Ovary/metabolism*
;
Signal Transduction/drug effects*
2.Current situation of clinical trial registration in acupuncture anesthesia: A scoping review.
Yue LI ; You-Ning LIU ; Zhen GUO ; Mu-En GU ; Wen-Jia WANG ; Yi ZHU ; Xiao-Jun ZHUANG ; Li-Ming CHEN ; Jia ZHOU ; Jing LI
Journal of Integrative Medicine 2025;23(3):256-263
BACKGROUND:
Modern acupuncture anesthesia is a combination of Chinese and Western medicine that integrates the theories of acupuncture with anesthesia. However, some clinical studies of acupuncture anesthesia lack specific descriptions of randomization, allocation concealment, and blinding processes, with subsequent systematic reviews indicating a risk of bias.
OBJECTIVE:
Clinical trial registration is essential for the enhancement of the quality of clinical trials. This study aims to summarize the status of clinical trial registrations for acupuncture anesthesia listed on the World Health Organization International Clinical Trials Registry Platform (ICTRP).
SEARCH STRATEGY:
We searched the ICTRP for clinical trials related to acupuncture anesthesia registered between January 1, 2001 and May 31, 2023. Additionally, related publications were retrieved from PubMed, Cochrane Library, Embase, China National Knowledge Infrastructure, China Science and Technology Journal Database, and Wanfang Data. Registrations and publications were analyzed for consistency in trial design characteristics.
INCLUSION CRITERIA:
Clinical trials that utilized one of several acupuncture-related therapies in combination with pharmacological anesthesia during the perioperative period were eligible for this review.
DATA EXTRACTION AND ANALYSIS:
Data extracted from articles included type of surgical procedure, perioperative symptoms, study methodology, type of intervention, trial recruitment information, and publication information related to clinical enrollment.
RESULTS:
A total of 166 trials related to acupuncture anesthesia from 21 countries were included in the analysis. The commonly reported symptoms in the included studies were postoperative nausea and vomiting (19.9%) and postoperative pain (13.3%). The concordance between the publications and the trial protocols in the clinical registry records was poor, with only 31.7% of the studies being fully compatible. Inconsistency rates were high for sample size (39.0%, 16/41), blinding (36.6%, 15/41), and secondary outcome indicators (24.4%, 10/41).
CONCLUSION
The volume of acupuncture anesthesia clinical trials registered in international trial registries over the last 20 years is low, with insufficient disclosure of results. Postoperative nausea and vomiting as well as postoperative pain, are the most investigated for acupuncture intervention. Please cite this article as: Li Y, Liu YN, Guo Z, Gu ME, Wang WJ, Zhu Y, Zhuang XJ, Chen LM, Zhou J, Li J. Current situation of clinical trial registration in acupuncture anesthesia: A scoping review. J Integr Med. 2025; 23(3): 256-263.
Humans
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Acupuncture Analgesia
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Acupuncture Therapy
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Anesthesia
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Clinical Trials as Topic
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Registries
3.Analysis of the Distribution of Intestinal Flora in Osteoporosis Patients with Spleen Deficiency Syndrome Based on 16SrRNA Sequence
En-Zhao DONG ; Xue-Feng FENG ; Xue-Yuan LI ; Ying LIN ; Xiao-Rou PAN
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(8):1947-1955
Objective To study the distribution of intestinal flora in osteoporosis patients with spleen deficiency syndrome.Methods According to the diagnostic criteria of osteoporosis of the World Health Organization(WHO)and the syndrome differentiation criteria of spleen deficiency syndrome in traditional Chinese medicine(TCM),26 healthy attenders with normal bone mass while without spleen deficiency were selected from the population visited Shunde Hospital of Guangzhou University of Chinese Medicine from January 2022 to September 2023 as the normal bone mass group,23 patients with bone mass reduction and spleen deficiency syndrome served as decreased bone mass with spleen deficiency group(shorten as DBM-SD group),and 69 patients with osteoporosis and spleen deficiency syndrome diagnosis were osteoporosis with spleen deficiency group(shorten as OS-SD group).A total of 118 attenders were enrolled in the analysis.The gender,age,body height,body weight,and body mass index(BMI)of the subjects were collected.The bone mineral density(BMD)and serum levels of calcium and alkaline phosphatase(ALP)of the subjects were measured.Stools were collected for the detection of the sequence of the 16SrRNA V3-V4 region,and the sequencing results were given species annotation,and then the correlation of community difference between groups and BMD with the intestinal flora was explored.Results(1)There were significant differences in the relative abundance of intestinal flora between the normal bone mass group and the OS-SD group:differences were shown in Firmicutes(t=2.490,P=0.016),Verrucomicrobia(t=2.180,P=0.003)and Fusobacteria(t=2.270,P=0.026),in Acidobacteria(t=3.003,P=0.003),Lactobacillus(t=3.150,P=0.002)and Bifidobacterium(t=7.248,P=0.001),and in Fecalibacterium(t=2.810,P=0.006)and Rothia(t=2.810,P=0.006).(2)There were significant differences in the relative abundance of intestinal flora between the normal bone mass group and the DBM-SD group:differences were shown in Lactobacillus(t=3.841,P=0.001)and Bifidobacterium(t=2.712,P=0.01),and in Faecalibacterium(t=2.466,P=0.017).(3)There were significant differences in the relative abundance of intestinal flora between the OS-SD group and DBM-SD group:differences were shown in Firmicutes(t=2.321,P=0.025),Bacteroidetes(t=0.393,P=0.020)and Verrucomicrobia(t=3.109,P=0.031).(4)The results of logistic regression analysis showed that in the OS-SD group,lumbar BMD was negatively correlated with Lactobacillus(R=0.355,P=0.003)and Bifidobacterium(R=0.366,P=0.002),positively correlated with Bacteroides(R=0.245,P=0.042),and was negatively correlated Rothia(R=0.330,P=0.006).Conclusion Some bacteria in the intestinal flora are related to the BMD of osteoporosis patients with spleen deficiency syndrome,and significant difference exists in the distribution of intestinal flora between the normal bone mass group and the OS-SD group.The results will provide a theoretical basis for the prevention and treatment of osteoporosis patients with spleen deficiency syndrome from the perspective of the changes of intestinal flora.
4.Application of Radiofrequency Ablation with Plasma Spot Excitation in Partial Resection of Vocal Fold in Pig
Jieyu LIU ; Xuping XIAO ; En ZHOU ; Jingkun LI ; Yu XIAO
Journal of Audiology and Speech Pathology 2024;32(6):536-540
Objective A porcine vocal cord injury model was established to analyze and compare the damage range of porcine vocal cords and the repair process after vocal cord injury caused by CO2 laser surgery and radiofre-quency ablation with plasma spot excitation technology.Methods Fifteen pigs,30 sides of vocal cords,were used in this study.The bilateral vocal cords of the same pig were divided into CO2 laser and radiofrequency coblation(RFC)groups respectively.CO2 laser and radiofrequency ablation with plasma spot excitation technology were used to perform ubligamental cordectomy.Three pigs were sacrificed after anesthesia on postoperative day 1 and postop-erative 3,6,9,and 15 weeks.The vocal cords were harvested for HE staining.The depth of edema degeneration zone and the fibrous tissue thickness were measured vertically in the two groups,and the postoperative vocal cord damage range and vocal cord repair process were compared between the two groups.Results The depth of edema degeneration zone in the CO2 laser group was deeper than that in the RFC group at 1 day postoperatively(P<0.01).There was no significant difference in the depth of the edema degeneration zone between the two groups at the 3rd,6th,and 9th weeks after operation(P>0.05).The depth of the edema degeneration zone at 3rd weeks postoperatively was less than that at 1 day postoperatively,and at 6th weeks postoperatively was less than that at 3rd weeks postoperatively for both operation modes(P<0.05).There was no statistically significant difference be-tween 9th weeks postoperatively and 6th weeks postoperatively(P>0.05).At the 15th week after operation,the fibrous tissue thickness of the vocal fold lamina propria in the RFC group was thinner than that in the CO2 laser group(P<0.01).Conclusion Radiofrequency ablation with plasma spot excitation technology causes less damage to porcine vocal fold than CO2 laser.There is no significant difference between the two operation modes in terms of postoperative repair process,while the fibrous tissue in the lamina propria of the vocal fold is thinner in the RFC group when a vocal fold scar is formed.
5.Impacts of LINC00943 on proliferation,apoptosis,and invasion of esophageal squamous cell carcinoma cells by regulating the miR-126-5p/HOXB2 axis
Xiao-Cai JIN ; Pan LI ; Xing ZHANG ; Wen-Juan ZHANG ; Guan-En QIAO
Modern Interventional Diagnosis and Treatment in Gastroenterology 2024;29(2):176-182
Objective To investigate the impacts of LINC00943 on proliferation,apoptosis,and invasion of esophageal squamous cell carcinoma(ESCC)cells by regulating the miR-126-5p/HOXB2 axis.Methods QRT-PCR was applied to detect the expression of LINC00943 in 45 ESCC tissues and cell lines;The effects of LINC00943 knockdown on the proliferation,apoptosis and invasion of KYSE30 cells were detected by MTT assay,flow cytometry and Transwell chamber.Western blot was applied to detect the expression of proliferating cell nuclear antigen(PCNA),Bcl-2 associated X protein(Bax),anti apoptotic factor B cell lymphomatoma-2(Bcl-2),cleaved caspase-3,matrix metalloproteinase-2(MMP-2),MMP-9,and HOXB2;dual luciferase reporter gene experiment was applied to verify the relationship between miR-126-5p and LINC00943 and HOXB2;the ESCC nude mouse in vivo model was constructed and separated into si-NC and si-LINC00943 groups,the tumor mass and volume were measured,qRT-PCR was applied to detect the expression of miR-126-5p in transplanted tumor tissue,immunohistochemistry was applied to detect the expression of HOXB2 protein in transplanted tumor tissue,and TUNEL staining was applied to detect cell apoptosis in tumor tissue.Results The expression of LINC00943 mRNA increased in ESCC tissues and cell lines(P<0.05);Compared with the si-NC group,the proliferation activity,migration and invasion cell number,HOXB2,PCNA,MMP-2,MMP-9 and Bcl-2 protein expression of KYSE30 cells in the si-LINC00943 group were decreased,and the expression of miR-126-5 p,Bax,Cleaved Caspase-3 and apoptosis rate were increased(P<0.05);downregulation of miR-126-5p was able to weaken the inhibitory effect of LINC00943 knockdown on the malignant behavior of KYSE30 cells(P<0.05);dual luciferase reporter gene experiment confirmed the targeted regulatory relationship between miR-126-5p and LINC00943,and miR-126-5p and HOXB2(P<0.05);The ESCC nude mouse model was constructed in vivo and divided into si-NC and si-LINC00943 groups.The tumor mass,tumor volume,expression of miR-126-5p and HOXB2 in transplanted tumor tissues and apoptosis rate of tumor cells were measured.(P<0.05).Conclusion LINC00943 is highly expressed in ESCC tissues and cell lines.Knocking down LINC00943 may inhibit the expression of HOXB2 by up-regulating the expression of miR-126-5p,promote the apoptosis of ESCC cells,and inhibit their proliferation,migration and invasion.
6.Diagnostic efficacy of serum 14-3-3β protein combined with fractional exhaled nitric oxide and conventional ventilatory lung function parameters for bronchial asthma in children
Shu-Fang LI ; Guang-En GUO ; Yue-Qin YANG ; Xiao-Man XIONG ; Shi-Wei ZHENG ; Xue-Li XIE ; Yan-Li ZHANG
Chinese Journal of Contemporary Pediatrics 2024;26(7):723-729
Objective To explore the diagnostic efficacy of serum 14-3-3β protein combined with fractional exhaled nitric oxide(FeNO)and conventional ventilatory lung function parameters in diagnosing bronchial asthma(referred to as"asthma")in children.Methods A prospective study included 136 children initially diagnosed with asthma during an acute episode as the asthma group,and 85 healthy children undergoing routine health checks as the control group.The study compared the differences in serum 14-3-3β protein concentrations between the two groups,analyzed the correlation of serum 14-3-3β protein with clinical indices,and evaluated the diagnostic efficacy of combining 14-3-3β protein,FeNO,and conventional ventilatory lung function parameters for asthma in children.Results The concentration of serum 14-3-3β protein was higher in the asthma group than in the control group(P<0.001).Serum 14-3-3β protein showed a positive correlation with the percentage of neutrophils and total serum immunoglobulin E,and a negative correlation with conventional ventilatory lung function parameters(P<0.05).Cross-validation of combined indices showed that the combination of 14-3-3β protein,FeNO,and the percentage of predicted value of forced expiratory flow at 75%of lung volume had an area under the curve of 0.948 for predicting asthma,with a sensitivity and specificity of 88.9%and 93.7%,respectively,demonstrating good diagnostic efficacy(P<0.001).The model had the best extrapolation.Conclusions The combination of serum 14-3-3β protein,FeNO,and the percentage of predicted value of forced expiratory flow at 75%of lung volume can significantly improve the diagnostic efficacy for asthma in children.
7.Distribution and antimicrobial resistance of pathogens from wound of burned patients in a tertiary first-class hospital from 2020 to 2022
Xiu-Cun LI ; En-Hua SUN ; Yan-Yan DONG ; Hui-Cui SHAN ; Hong-Xia ZHOU ; Xiao-Rong LUAN
Chinese Journal of Infection Control 2024;23(9):1126-1134
Objective To analyze the distribution and antimicrobial resistance of pathogens from wounds of burned patients,providing reference for the rational use of antimicrobial agents and healthcare-associated infection(HAI)prevention and control.Methods Clinical data of burned patients admitted to a tertiary first-class hospital from Ja-nuary 2020 to December 2022 were analyzed retrospectively,pathogens in the wound was cultured,identified,and performed antimicrobial susceptibility analysis.Results From 2020 to 2022,a total of 588 burned patients were ad-mitted,734 strains of pathogens were detected,including 415 strains(56.54%)of Gram-negative bacteria,306 strains(41.69%)of Gram-positive bacteria,and 13(1.77%)strains of fungi.The top 5 pathogens were Staphy-lococcus aureus,Escherichia coli,Pseudomonas aeruginosa,Klebsiella pneumoniae,and Enterobacter cloacae.Staphylococcus aureus had higher resistance rates(93.02%-97.37%)to penicillin G,resistance rate to oxacillin increased from 11.63%to 21.92%.Pseudomonas aeruginosa mainly exhibited resistance to ticarcillin/clavulanic acid,aztreonam,and levofloxacin,resistance rates to imipenem and meropenem were 15.00%-38.10%and 10.00%-33.33%,respectively.Susceptibility of Enterobacterales bacteria to cephalosporins enhanced with the increased of cephalosporin generations,and exhibited higher resistance to commonly used antimicrobial agents.Conclusion Over the past three years,there has been no significant change in the detection of major pathogens and antimicrobial resistance in wounds of burned patients in this hospital.Antimicrobial resistance of Staphylococcus aureus and En-terobacterales is relatively severe,and it is necessary to carry out surveillance on pathogens from burn wounds in corresponding areas.
8.Tick-borne pathogens infection of rodents at the border of China and the Democratic People's Republic of Korea
Zhuo WANG ; Qiong WU ; Xiao-Yang HUANG ; Guan-Peng HUANG ; You-Xin MA ; En-Rong MAO ; Guo-Shuang LENG ; Hong-Min ZHAO ; Bing LI ; Yi-Min WU
Chinese Journal of Zoonoses 2024;40(4):323-327
To investigate the existence of tick-borne pathogens infection of rodents at the border of China and the Demo-cratic People's Republic of Korea(DPRK).PCR was used to detect the spotted fever group rickettsiae(SFGR)ompA gene,Ehrlichia chaffeensis(Ec)and Anaplasma phagocytophilum(Ap)16S rRNA,Candidatus Neoehrlichia mikurensis(CNm)groEL gene,Bartonella(Ba)rpoB gene,and Francisella tularensis(Ft)fopA gene in rodents samples collected from Ji'an of Jilin province and Kuandian of Liaoning Province.The positivity rates of 132 wild rats spleen samples,SFGR,Ec,Ap,CNm,Ba,and Ft were 9.85%,12.88%,5.30%,3.79%,51.52%,and 6.06%,respectively,with statistical differences in in-fection rates(x2=149.236,P=0.000).The infection rate of Ba was the highest in wild rats in this area.There was no signifi-cant difference in the infection rate of SFGR,Ec,Ap,CNm,and Ft among different rats species,but there were significant differences in the infection rate of Ba(x2=13.36,P=0.010).The infection rate of Apodemus agrarius was the highest.A-mong 132 wild rats specimens,the coinfection rate of the two pathogens was 15.9%(21/132),with Ba as the main species(15/132),and two cases of coinfection with three pathogens were detected.The infection of six tick-borne pathogens is common in wild rats at the China/DPRK border.Co-infection of two or three pathogens indicates a risk of multiple tick-borne pathogens and mixed natural foci of multiple tick-borne infec-tious diseases.
9.Clinical characteristics and risk factors for bronchoscopic airway mucus hypersecretion in childhood pneumonia infected by different pathogens.
Jiang Yu CAI ; Chun Yu YAN ; Xiao Qing WANG ; Zheng Xiu LUO ; Jian LUO ; Qu Bei LI ; En Mei LIU ; Yu DENG
Chinese Journal of Pediatrics 2023;61(8):719-725
Objective: To investigate the risk factors for airway mucus hypersecretion in childhood pneumonia infected by different pathogens. Method: A retrospective cohort included 968 children who were hospitalized for Mycoplasma pneumoniae pneumonia (MPP), respiratory syncytial virus (RSV) pneumonia, adenovirus pneumonia and underwent bronchoscopy in Respiratory Department of Children's Hospital of Chongqing Medical University from January 2019 to December 2021 was conducted. The children were divided into two groups distinguished by airway mucus secretion according to the airway mucus hypersecretion score which were scored according to the mucus secretion under the bronchoscope. The demographic characteristics, clinical characteristics, laboratory tests and disease severity of the two groups were compared. And the risk factors for the development of airway mucus hypersecretion in two groups were analyzed. Chi square test, Mann-Whithey U test and Fisher exact test were used to analyze the differences between the two groups, and multivariate Logistic regression was used to analyze the influencing factors. Result: There were 559 males and 409 females in the 968 children, with an age of 4.0 (1.4, 6.0) years. Among the 642 children with MPP, 185 cases were in the hypersecretion group and 457 cases were in the non-hypersecretion group. There were 41 cases in the hypersecretion group and 160 cases in the non-hypersecretion group of 201 children with RSV pneumonia. In the 125 children with adenovirus pneumonia, there were 39 cases in the hypersecretion group and 86 cases in the non-hypersecretion group. In these children, the age of children in the hypersecretion group was older than that in the non-hypersecretion group (6.0 (4.0, 7.0) vs. 5.0 (3.0, 7.0) years old, 1.5 (0.5, 3.6) vs. 0.8 (0.4, 1.6) years old, 2.0 (1.2, 4.5) vs. 1.3 (0.8, 2.0) years old, U=35 295.00, 2 492.00, 1 101.00, all P<0.05). Through multivariate Logistic regression analysis it found that increased risk of airway mucus hypersecretion was present in childhood MPP with increase in peripheral blood white blood cell count (OR=3.30, 95%CI 1.51-7.93, P=0.004) or increase in neutrophil ratio (OR=2.24, 95%CI 1.16-4.33, P=0.016) or decrease in lymphocyte count (OR=3.22, 95%CI 1.66-6.31, P<0.001) or decrease in serum albumin (OR=2.00, 95%CI 1.01-3.98, P=0.047). The risk of airway mucus hypersecretion was increased in children with RSV pneumonia combined with elevated peripheral blood eosinophils (OR=3.04, 95%CI 1.02-8.93, P=0.043). Meanwhile, airway mucus hypersecretion was associated with severe pneumonia (OR=2.46, 95%CI 1.03-6.15, P=0.047) in children with RSV pneumonia. Older age was associated with increased risk of airway mucus hypersecretion in children with adenovirus pneumonia (OR=1.02, 95%CI 1.00-1.04, P=0.026). In these children with occurrence of pulmonary rales, wheezes or sputum sounds (OR=3.65, 95%CI 1.22-12.64, P=0.028) had an increased risk of airway mucus hypersecretion. Neutrophils in bronchoalveolar lavage fluid (BALF) demonstrated higher ratio in hypersecretion group from children with MPP (0.65 (0.43, 0.81) vs. 0.59 (0.34, 0.76), U=24 507.00, P<0.01), while the proportion of macrophages in BALF was lower (0.10 (0.05, 0.20) vs. 0.12 (0.06, 0.24), U=33 043.00, P<0.05). Nucleated cell count and neutrophil ratio in BALF were higher in hypersecretion group of children with RSV pneumonia (1 210 (442, 2 100)×106 vs. 490 (210, 1 510)×106/L, 0.43 (0.26, 0.62) vs. 0.30 (0.13, 0.52), U=2 043.00, 2 064.00, all P<0.05). Conclusions: The increase in peripheral blood white blood cell count, neutrophil ratio and decrease in lymphocyte count, serum albumin in children with MPP is related to the development of airway mucus hypersecretion. In children with RSV pneumonia, the abnormal increase of eosinophils in peripheral blood has relationship with hypersecretion. The appearance of lung rale, wheezing, and sputum rale are associated with airway mucus hypersecretion in children with adenovirus pneumonia. In addition, local neutrophil infiltration in the respiratory tract is closely related to the occurrence of airway mucus hypersecretion caused by Mycoplasma pneumoniae and RSV infection.
Child
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Male
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Female
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Humans
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Infant
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Child, Preschool
;
Retrospective Studies
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Respiratory Sounds
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Pneumonia, Mycoplasma
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Lung
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Respiratory Syncytial Virus Infections
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Mucus
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Pneumonia, Viral
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Risk Factors
10.Preparation of 3D printed metoprolol tartrate chewable tablets and optimization of printing process
Shan-shan WANG ; Xiao-lu HAN ; En LIANG ; Cong-hui LI ; Chun-yan LIU ; Ming-yuan LI ; Zeng-ming WANG ; Peng YU ; Ai-ping ZHENG
Acta Pharmaceutica Sinica 2023;58(9):2811-2817
With the growing demand of personalized medicine for children, it is especially important to develop medicines for children. In this study, using metoprolol tartrate as model drug, we developed 3D printed chewable tablets suitable for children with automated dosage distribution using semi-solid extruded (SSE) 3D printing technology. Based on the quality by design concept, this study prepared a semi-solid material with good printability using gelatin as the substrate, constructed 3D models and printed tablets with the aid of computer-aided design. The printing parameters were optimized and determined as follows: print temperature of 35-37 ℃, print speed of 25 mm·s-1, fill rate of 15%, and number of outer profile layers of 2. Subsequently, the printing process and the quality uniformity of the tablets were verified, and a linear relationship between the dose and the number of model layers was obtained. Finally, 3D printed chewable tablets were superior in terms of appearance, dose accuracy and compliance compared with traditional split-dose commercially available tablets. In this study, 3D printed metoprolol tartrate chewable tablets with good performance were successfully prepared to address the personalized medication needs of pediatric patients.

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