1.Shashen Maidong Tang Enhances Efficacy of Chemotherapy in Mouse Model of Lewis Lung Cancer by Modulating JAK2/STAT3 Signaling Pathway
Lin YU ; Yaoyao WANG ; Limin LIU ; Zuowei HU ; Yanping ZHOU ; Shang WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):1-10
ObjectiveTo predict the mechanism through which Shasheng Maidong Tang enhances the efficacy of chemotherapy for lung cancer via network pharmacology and validate the prediction results in animal experiments. MethodsThe potential mechanism through which Shasheng Maidong Tang enhances the efficacy of chemotherapy for lung cancer was predicted by network pharmacology, liquid chromatography-mass spectrometry (LC-MS), and molecular docking methods. C57/BL6 mice were assigned into normal, model, cisplatin, and Shasheng Maidong Tang+cisplatin groups. In addition to the normal group, the remaining groups were injected subcutaneously with 0.2 mL of 1×107 cells·mL-1 Lewis lung cancer cells to establish the Lewis lung cancer model. The daily gavage dose of Shasheng Maidong Tang was 3.58 g·kg-1, and the concentration of cisplatin intraperitoneally injected on every other day was 2 mg·kg-1. Drugs were administered for 14 d. The changes in the tumor volume and the rate of tumor suppression were monitored, and the tumor histopathological changes were observed by hematoxylin-eosin (HE) staining. Enzyme-linked immunosorbent assay was employed to measure the interleukin (IL)-6 and interferon (IFN)-γ levels in peripheral blood. Real-time PCR was performed to quantify the mRNA levels of Janus kinase 2 (JAK2), signal transducer and activator of transcription 1 (STAT1), and signal transducer and activator of transcription 3 (STAT3) in the tumor tissue of mice. Western blot was employed to determine the protein levels of JAK2, STAT3, B-cell lymphoma-2 (Bcl-2), cysteinyl aspartate-specific proteinase-3 (Caspase-3), and Pim-1 proto1 (PIM1) in the tumor tissue. Immunohistochemistry was employed to detect the expression of Bcl-2 and PIM1 in the tumor tissue. ResultsNetwork pharmacological predictions indicated that Shasheng Maidong Tang might enhance the efficacy of chemotherapy for lung cancer by regulating nitrogen metabolism, AGE-RAGE signaling pathway, cancer pathway, and JAK/STAT signaling pathway. The experimental results demonstrated that tumor volume in the cisplatin group and Shasheng Maidong Tang+cisplatin group was reduced compared with the model group, with statistically distinct differences observed on days 14, 17, 20 post modeling (P<0.05). Notably, the Shasheng Maidong Tang+cisplatin therapy further decreased tumor volume compared with the cisplatin group, showing marked reductions on days 17 and 20 (P<0.05), consistent with trends visualized in tumor volume comparison charts. The Shasheng Maidong Tang+cisplatin group exhibited higher tumor inhibition rate than the cisplatin group (P<0.05). Histopathological analysis via HE staining revealed that the tumors in the model group displayed frequent nuclear mitosis, densely arranged cells, hyperchromatic nuclei, and no necrosis. Cisplatin treatment induced partial necrosis and vacuolization, while the Shasheng Maidong Tang+cisplatin group exhibited extensive necrotic regions, maximal vacuolization, disarranged tumor cells, and minimal mitotic activity. Compared with the model group, the cisplatin group and the Shasheng Maidong Tang+cisplatin group showed elevated level of IFN-γ (P<0.01) and declined level of IL-6 (P<0.01) in the peripheral blood. Compared with the cisplatin group, the Shasheng Maidong Tang+cisplatin group presented elevated level of IFN-γ (P<0.01) and lowered level of IL-6 (P<0.01) in the peripheral blood. Compared with the model group, the cisplatin group and the Shasheng Maidong Tang+cisplatin groups showed down-regulated mRNA levels of JAK2 and STAT3 (P<0.01) and up-regulated mRNA level STAT1 (P<0.01). Compared with the cisplatin group, the Shasheng Maidong Tang+cisplatin group presented down-regulated mRNA levels of JAK2 and STAT3 (P<0.01) and up-regulated mRNA level of STAT1 (P<0.01). Compared with the model group, the cisplatin group and the Shasheng Maidong Tang+cisplatin group showed down-regulated protein levels of JAK2 (P<0.01), Bcl-2 (P<0.01), PIM1 (P<0.01), and STAT3 (P<0.05), and up-regulated protein level of Caspase-3 (P<0.01). Compared with the cisplatin group, Shasheng Maidong Tang+cisplatin group presented down-regulated protein levels of JAK2 (P<0.01), Bcl-2 (P<0.01), PIM1 (P<0.01), STAT3 (P<0.05), and up-regulated protein level of Caspase-3 (P<0.01). The Bcl-2 and PIM1 expression results obtained by immunohistochemistry were consistent with those of Western blot. ConclusionShasheng Maidong Tang may enhance the efficacy of chemotherapy in the mouse model of Lewis lung cancer by regulating the JAK2/STAT3 signaling pathway.
2.Mechanisms of Gegen Qinlian Tang-containing Serum in Improving 5-FU Sensitivity by Inhibiting Glycolysis in Colorectal Cancer Cells Based on CDK16/MYC Pathway
Rong CAI ; Shang WANG ; Fuqing CHENG ; Yanping ZHOU ; Zuowei HU ; Yunhai LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):1-9
ObjectiveTo explore the molecular mechanisms by which serum containing Gegen Qinlian Tang (GQT) inhibits glycolysis and enhances chemotherapy sensitivity in 5-fluorouracil (5-FU)-resistant colorectal cancer (CRC) cells based on the cyclin-dependent kinase 16 (CDK16)/MYC proto-oncogene (MYC) pathway. MethodsHCT-116/5-FU cells were treated with different concentrations (5%, 10%, 20%, 30%) of GQT-containing serum. Cell viability and 5-FU sensitivity were assessed using the cell counting kit-8 (CCK-8) assay, and the experimental concentrations of 5-FU and GQT for subsequent experiments were determined. Cell proliferation and apoptosis under individual 5-FU, GQT, and combined 5-FU + GQT treatments were evaluated using 5-ethynyl-2′-deoxyuridine (EDU) staining and annexin V-FITC/PI double staining, respectively. Glucose consumption, adenosine triphosphate (ATP) production, and lactate levels were measured by colorimetric assays. Expression levels of glycolysis-related proteins, CDK16, MYC, and phosphorylated MYC were detected by Western blot. Co-immunoprecipitation (CoIP) was used to examine the protein interaction between CDK16 and MYC, and cycloheximide (CHX) treatment was applied to assess the effect of CDK16 overexpression on MYC protein stability. ResultsCCK-8 assays showed that 2.5 mg·L-1 5-FU significantly inhibited HCT-116 cell viability in a dose-dependent manner. In HCT-116/5-FU cells, significant inhibition was observed only at 5 mg·L-1 5-FU (P<0.05), which was used for model establishment. Compared with 5-FU alone, addition of 5% GQT-containing serum significantly suppressed HCT-116/5-FU cell viability (P<0.05), with stronger inhibition at higher serum concentrations. Thus, 5% GQT-containing serum was used in subsequent experiments. Compared with the control group, 5-FU, GQT, and 5-FU + GQT treatments all significantly reduced cell proliferation (P<0.05) and increased apoptosis (P<0.01). The 5-FU + GQT combination showed superior inhibition of proliferation compared with 5-FU or GQT alone (P<0.01), accompanied by more pronounced reductions in glucose consumption, ATP production, and lactate generation (P<0.01). Additionally, compared with control, 5-FU, and GQT groups, the 5-FU + GQT group exhibited stronger suppression of MYC and its phosphorylated forms (P<0.01) and greater inhibition of glycolytic enzymes, including hexokinase 2 (HK2), 3-phosphoinositide-dependent protein kinase 1 (PDK1), lactate dehydrogenase A (LDHA), and pyruvate kinase M2 (PKM2) (P<0.01). CDK16, MYC, and MYC phosphorylation expression levels were significantly downregulated in the 5-FU + GQT group compared with the 5-FU group (all P<0.01). MYC protein stability decreased in a time-dependent manner in the 5-FU + GQT group (P<0.05), which was rescued by CDK16 overexpression (P<0.05). ConclusionGQT significantly enhances the sensitivity of HCT-116/5-FU cells to 5-FU, potentially by inhibiting CDK16 and thereby reducing MYC-mediated glycolysis.
3.Construction and Evaluation of "Constitution-disease-syndrome" Trinity Model for Rodents with Qi Deficiency
Yasheng DENG ; Jiang LIN ; Yujiang XI ; Qian ZHOU ; Yanping FAN ; Wenyue LI ; Yonghui LIU ; Zhaobing NI ; Qiu CHEN ; Xi MING
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):274-284
The theory of constitution in traditional Chinese medicine (TCM) has emerged as a new discipline in recent years. Constitution plays a vital role in the onset,progression,transformation,and prognosis of diseases. At present,some clinical scholars have adopted a novel diagnostic and treatment model of "constitution differentiation-disease identification-syndrome differentiation",in which constitution is regarded as a core element throughout the diagnostic and therapeutic process. Constitution is closely associated with etiology,onset,pathogenesis,syndrome differentiation,and treatment. Against this background,the construction of animal models based on constitution holds far-reaching significance for advancing clinical research. This paper focuses on the construction and evaluation of rodent models with Qi-deficiency constitution,aiming to explore how to further induce Qi-deficiency syndromes and related disease states on the basis of Qi-deficiency constitution models,thereby developing an integrated animal model that embodies the trinity of "constitution-disease-syndrome". The establishment of this model not only provides a solid experimental foundation for the development of new therapies and drugs in TCM targeting specific constitutions,diseases,and syndromes,but also greatly promotes the modernization and scientific advancement of TCM theory. By comprehensively applying multidisciplinary technologies and methods,the study evaluates the model's validity,reliability,and practicality,with the aim of opening new avenues for future research in TCM and promoting the development of the field.
4.Mechanisms of Gegen Qinlian Tang-containing Serum in Improving 5-FU Sensitivity by Inhibiting Glycolysis in Colorectal Cancer Cells Based on CDK16/MYC Pathway
Rong CAI ; Shang WANG ; Fuqing CHENG ; Yanping ZHOU ; Zuowei HU ; Yunhai LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):1-9
ObjectiveTo explore the molecular mechanisms by which serum containing Gegen Qinlian Tang (GQT) inhibits glycolysis and enhances chemotherapy sensitivity in 5-fluorouracil (5-FU)-resistant colorectal cancer (CRC) cells based on the cyclin-dependent kinase 16 (CDK16)/MYC proto-oncogene (MYC) pathway. MethodsHCT-116/5-FU cells were treated with different concentrations (5%, 10%, 20%, 30%) of GQT-containing serum. Cell viability and 5-FU sensitivity were assessed using the cell counting kit-8 (CCK-8) assay, and the experimental concentrations of 5-FU and GQT for subsequent experiments were determined. Cell proliferation and apoptosis under individual 5-FU, GQT, and combined 5-FU + GQT treatments were evaluated using 5-ethynyl-2′-deoxyuridine (EDU) staining and annexin V-FITC/PI double staining, respectively. Glucose consumption, adenosine triphosphate (ATP) production, and lactate levels were measured by colorimetric assays. Expression levels of glycolysis-related proteins, CDK16, MYC, and phosphorylated MYC were detected by Western blot. Co-immunoprecipitation (CoIP) was used to examine the protein interaction between CDK16 and MYC, and cycloheximide (CHX) treatment was applied to assess the effect of CDK16 overexpression on MYC protein stability. ResultsCCK-8 assays showed that 2.5 mg·L-1 5-FU significantly inhibited HCT-116 cell viability in a dose-dependent manner. In HCT-116/5-FU cells, significant inhibition was observed only at 5 mg·L-1 5-FU (P<0.05), which was used for model establishment. Compared with 5-FU alone, addition of 5% GQT-containing serum significantly suppressed HCT-116/5-FU cell viability (P<0.05), with stronger inhibition at higher serum concentrations. Thus, 5% GQT-containing serum was used in subsequent experiments. Compared with the control group, 5-FU, GQT, and 5-FU + GQT treatments all significantly reduced cell proliferation (P<0.05) and increased apoptosis (P<0.01). The 5-FU + GQT combination showed superior inhibition of proliferation compared with 5-FU or GQT alone (P<0.01), accompanied by more pronounced reductions in glucose consumption, ATP production, and lactate generation (P<0.01). Additionally, compared with control, 5-FU, and GQT groups, the 5-FU + GQT group exhibited stronger suppression of MYC and its phosphorylated forms (P<0.01) and greater inhibition of glycolytic enzymes, including hexokinase 2 (HK2), 3-phosphoinositide-dependent protein kinase 1 (PDK1), lactate dehydrogenase A (LDHA), and pyruvate kinase M2 (PKM2) (P<0.01). CDK16, MYC, and MYC phosphorylation expression levels were significantly downregulated in the 5-FU + GQT group compared with the 5-FU group (all P<0.01). MYC protein stability decreased in a time-dependent manner in the 5-FU + GQT group (P<0.05), which was rescued by CDK16 overexpression (P<0.05). ConclusionGQT significantly enhances the sensitivity of HCT-116/5-FU cells to 5-FU, potentially by inhibiting CDK16 and thereby reducing MYC-mediated glycolysis.
5.Construction and Evaluation of "Constitution-disease-syndrome" Trinity Model for Rodents with Qi Deficiency
Yasheng DENG ; Jiang LIN ; Yujiang XI ; Qian ZHOU ; Yanping FAN ; Wenyue LI ; Yonghui LIU ; Zhaobing NI ; Qiu CHEN ; Xi MING
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):274-284
The theory of constitution in traditional Chinese medicine (TCM) has emerged as a new discipline in recent years. Constitution plays a vital role in the onset,progression,transformation,and prognosis of diseases. At present,some clinical scholars have adopted a novel diagnostic and treatment model of "constitution differentiation-disease identification-syndrome differentiation",in which constitution is regarded as a core element throughout the diagnostic and therapeutic process. Constitution is closely associated with etiology,onset,pathogenesis,syndrome differentiation,and treatment. Against this background,the construction of animal models based on constitution holds far-reaching significance for advancing clinical research. This paper focuses on the construction and evaluation of rodent models with Qi-deficiency constitution,aiming to explore how to further induce Qi-deficiency syndromes and related disease states on the basis of Qi-deficiency constitution models,thereby developing an integrated animal model that embodies the trinity of "constitution-disease-syndrome". The establishment of this model not only provides a solid experimental foundation for the development of new therapies and drugs in TCM targeting specific constitutions,diseases,and syndromes,but also greatly promotes the modernization and scientific advancement of TCM theory. By comprehensively applying multidisciplinary technologies and methods,the study evaluates the model's validity,reliability,and practicality,with the aim of opening new avenues for future research in TCM and promoting the development of the field.
6.Protective effect of the active component DMDD from Averrhoa carambola root on myocardial injury in diabetic mice and its correlation with the NCOA4/FTH1/ATG8 axis
Yongxin CHEN ; Yuxuan LI ; Kailei GU ; Jiajun YOU ; Xiaohan SUN ; Jing MA ; Yanping ZHOU ; Xiaojie WEI
China Pharmacy 2026;37(9):1141-1147
OBJECTIVE To investigate the protective effect of 2-dodecyl-6-methoxy-2,5-diene-1,4-cyclohexanedione (DMDD), an active component from Averrhoa carambola root, on myocardial injury in diabetic mice based on the nuclear receptor coactivator 4/ferritin heavy chain 1/autophagy-related protein 8 (NCOA4/FTH1/ATG8) axis. METHODS The successfully modeled diabetic mice were randomly divided into model group and DMDD low-, medium-, and high-dose (12.5, 25, 50 mg/kg) groups, while an additional non-modeled control group was established, with 6 mice in each group. Each group received the corresponding drug solution or an equal volume of normal saline intragastically once daily for 21 consecutive days. After the administration, the levels of fasting blood glucose (FBG), serum lactate dehydrogenase (LDH), and creatine kinase isoenzyme MB (CK-MB) were measured. Myocardial pathological changes, degree of fibrosis, and myocardial cell ultrastructure were observed. Myocardial cell death index and NCOA4 protein positive index were detected. The protein expression levels of NCOA4, FTH1, ATG8, solute carrier family 7 member 11 (SLC7A11), and glutathione peroxidase 4 (GPX4) in cardiac tissue were measured. RESULTS Compared with model group, each DMDD group showed significant alleviation of cardiac pathological injury and varying degrees of improvement in the myocardial cell ultrastructure. The FBG and serum LDH and CK-MB levels, the myocardial cell death index and NCOA4 protein positive index,the protein expression levels of NCOA4, FTH1, and ATG8 in cardiac tissue were significantly decreased ( P <0.001), while the protein expression levels of SLC7A11 and GPX4 were significantly increased ( P <0.001). CONCLUSIONS DMDD can reduce blood glucose levels, alleviate myocardial histopathological injury, and inhibit cell death in diabetic mice. The mechanism is associated with inhibiting excessive activation of the NCOA4/FTH1/ATG8 axis and reducing ferritinophagy.
7.Optimizing the whole-process quality control system of intravenous drug distribution center based on failure mode and effect analysis
Wei WEI ; Mingxia ZHANG ; Yanping ZHOU ; Lan YAN ; Peng TIAN ; Xia FENG
Journal of Pharmaceutical Practice and Service 2026;44(6):322-328
Objective To explore the application effect of a standardized management method based on failure mode and effect analysis (FMEA) in optimizing the whole-process quality control system of the intravenous admixture service (PIVAS). Methods The quality control management system of the PIVAS was optimized by establishing six quality control groups led by the head nurse, with full participation of pharmacy, nursing, and logistical staff, ensuring comprehensive coverage and traceability of all quality control links. Each group conducted risk priority number (RPN) scoring for potential failure modes in their respective quality control processes, and targeted improvement measures were formulated based on the scoring results. The RPN values of failure modes and quality control-related evaluation indicators before and after implementation were compared to achieve closed-loop management. Results After one year of management, the RPN values of the six major failure modes significantly decreased compared to those before implementation (P<0.05). The compounding error rate dropped to 0.13%, the dispensing error rate decreased to 0.95%, the compounding efficiency increased to 98%, the delivery time was shortened by 0.45 h per batch, the intervention rate for irrational prescriptions rose to 94.87%, satisfaction improved to 96.78%, and the participation rate of quality control personnel reached 95.36% (P<0.05). Conclusion FMEA-based identification of potential failure modes in the whole-process quality control system of the IVAS, combined with risk quantification and targeted interventions, significantly reduced high-risk failure modes, improved compounding accuracy and efficiency, and ensured the safety of clinical intravenous medication and the effectiveness of healthcare quality management.
8.Optimizing the whole-process quality control system of intravenous drug distribution center based on failure mode and effect analysis
Wei WEI ; Mingxia ZHANG ; Yanping ZHOU ; Lan YAN ; Peng TIAN ; Xia FENG
Journal of Pharmaceutical Practice and Service 2026;44(6):322-328
Objective To explore the application effect of a standardized management method based on failure mode and effect analysis (FMEA) in optimizing the whole-process quality control system of the intravenous admixture service (PIVAS). Methods The quality control management system of the PIVAS was optimized by establishing six quality control groups led by the head nurse, with full participation of pharmacy, nursing, and logistical staff, ensuring comprehensive coverage and traceability of all quality control links. Each group conducted risk priority number (RPN) scoring for potential failure modes in their respective quality control processes, and targeted improvement measures were formulated based on the scoring results. The RPN values of failure modes and quality control-related evaluation indicators before and after implementation were compared to achieve closed-loop management. Results After one year of management, the RPN values of the six major failure modes significantly decreased compared to those before implementation (P<0.05). The compounding error rate dropped to 0.13%, the dispensing error rate decreased to 0.95%, the compounding efficiency increased to 98%, the delivery time was shortened by 0.45 h per batch, the intervention rate for irrational prescriptions rose to 94.87%, satisfaction improved to 96.78%, and the participation rate of quality control personnel reached 95.36% (P<0.05). Conclusion FMEA-based identification of potential failure modes in the whole-process quality control system of the IVAS, combined with risk quantification and targeted interventions, significantly reduced high-risk failure modes, improved compounding accuracy and efficiency, and ensured the safety of clinical intravenous medication and the effectiveness of healthcare quality management.
9.A preliminary study of mechanosensitive channels Piezo 1 and Piezo 2 promoting neurogenic bladder fibrosis in young rats
Lei LYU ; Yanping ZHANG ; Qi LI ; Junkui WANG ; Shuai YANG ; Zhaokai ZHOU ; Shuai LI ; Yibo WEN ; Yakai LIU ; Guowei SI ; Xingchen LIU ; Jianguo WEN
Journal of Modern Urology 2025;30(4):343-349
Objective: To explore the changes of mechanosensitive channels Piezos (Piezo 1 and Piezo 2) in neurogenic bladder (NB) of young rats and their effects,so as to provide reference for clinical search of new therapeutic targets. Methods: A total of 30 female young SD rats were divided into 5 groups based on random number table method:sham operation group (sham),2-week nerve transection group (NB-2W),6-week nerve transection group (NB-6W),2-week nerve transection + Piezos inhibitor group (NB-P-2W) and 6-week nerve transection + Piezos inhibitor group (NB-P-6W),with 6 rats in each group.The NB models were constructed by transecting the L6 and S1 spinal nerves of young rats.The NB-2W and NB-6W groups were not intervened after modeling,while the NB-P-2W and NB-P-6W groups were intraperitoneally injected with Piezos inhibitor GsMTx4 (10 mg/kg) every 2 days after modeling.Bladder cystometry and ultrasound were performed after 2 and 6 weeks of transection.The expressions of Piezos and fibrosis-related indexes (Collagen Ⅰ and α-smooth muscle actin) were detected in bladder tissues. Results: The results of bladder cystometry showed that the basal bladder pressure in NB-2W group was significantly increased,while it was slightly decreased but was still higher in NB-6W group than in the sham group (P<0.05).Basal bladder pressure was lower in NB-P-2W group than in NB-2W group,but was higher than that in the sham group; basal bladder pressure was lower in NB-P-6W group than in NB-6W group,but higher than that in the sham group (P<0.05).Compared with the sham group,the NB-2W and NB-6W groups had firstly increased and then decreased maximum cystometric capacity (MCC) (P<0.05).Compared with NB-2W group,NB-P-2W group had lower bladder leakage point pressure (BLPP),but higher MCC and bladder compliance (BC) (P<0.05).Compared with NB-6W group,NB-P-6W group had significantly lower BLPP but higher MCC and BC (P<0.05).HE and MASSON staining and ultrasound results showed that,with the extension of nerve transection time,bladder fibrosis gradually worsened,the bladder wall became rough and thickened,calculi were visible inside,and hydronephrosis gradually appeared; the degree of fibrosis in NB-P-2W and NB-P-6W groups was less than that in NB-2W and NB-6W groups,and no hydronephrosis was observed in the upper urinary tract.In addition,Western blotting and immunohistochemical results showed that NB-2W and NB-6W groups had significantly higher relative expression levels of Piezos,Collagen Ⅰ and α-SMA than the sham group (P<0.01),while NB-P-2W and NB-P-6W groups had lower relative expression levels of Piezos,Collagen Ⅰ and α-SMA than NB-2W and NB-6W groups (P<0.01). Conclusion: The increased expressions of mechanosensitive channels Piezos in NB young rats may be involved in the progression of bladder fibrosis,but its mechanism needs further study.
10.Relationship of family function with sleep quality and externalizing problem behaviors among preschool children
LU Yanping, GUO Shi, ZHOU Mingyue, ZHU Dongmei, YU Yizhen
Chinese Journal of School Health 2025;46(1):106-110
Objective:
To explore the relationship of family function with sleep and externalizing problem behaviors of preschool children, so as to provide a guidance for externalizing problem prevention and intervention among preschool children.
Methods:
From October 2023 to January 2024, a convenience sampling method was used to select 5 138 preschool children from kindergartens in 8 districts of Wuhan City, Hubei Province. Parents completed the survey for Family Adaptability and Cohesion Scale, children s sleep habits and Child Behavior Checklist (CBCL). Spearman correlation analysis was used to examine the correlation of family function with scores of sleep quality and externalizing problem behaviors among preschool children. A mediation model analysis and bootstrap test were conducted to further investigate the mediating role of sleep quality between family function and externalizing problem behaviors. Mplus 8.7 software was used for latent profile analysis of family function.
Results:
The reported rates of poor sleep quality and externalizing problem behaviors among preschool children were 11.8% ( n =607), 20.0% ( n =1 026). The relevant analysis results showed that family function was negatively correlated with sleep quality and externalizing problem behaviors ( r = -0.20, -0.23), and sleep quality was positively correlated with externalizing problem behaviors ( r =0.27) ( P <0.01). The mediation effect test showed that family function negatively predicted externalizing problem behaviors ( β =-0.079) and sleep quality ( β = -0.075), while sleep quality positively predicted externalizing problem behaviors ( β =0.215) ( P <0.01). The latent profile analysis results showed that family function could be classified into 4 categories: high family function group (23.01%), upper middle family function group (44.65%), moderate family function group (26.24%) and low family function group (6.11%). Compared to high family function, the other three categories significantly positively predicted externalizing problem behaviors, and the mediating effects of sleep quality on different categories of family function were statistically significant [upper middle family function: mediation effect value was 0.022 (95% CI =0.004-0.041) and direct effect value was 0.329 (95% CI =0.263-0.396); middle family function: mediation effect value was 0.087 (95% CI =0.063-0.115) and direct effect value was 0.491 (95% CI =0.416-0.565); low family function: mediation effect value was 0.144 (95% CI =0.107-0.185) and direct effect 0.621 (95% CI =0.503-0.740)] ( P < 0.05 ).
Conclusion
Family function negatively predicts the externalizing problem behaviors of preschool children, and sleep quality plays a partial mediating role.


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