1.Gallstones, cholecystectomy, and cancer risk: an observational and Mendelian randomization study.
Yuanyue ZHU ; Linhui SHEN ; Yanan HUO ; Qin WAN ; Yingfen QIN ; Ruying HU ; Lixin SHI ; Qing SU ; Xuefeng YU ; Li YAN ; Guijun QIN ; Xulei TANG ; Gang CHEN ; Yu XU ; Tiange WANG ; Zhiyun ZHAO ; Zhengnan GAO ; Guixia WANG ; Feixia SHEN ; Xuejiang GU ; Zuojie LUO ; Li CHEN ; Qiang LI ; Zhen YE ; Yinfei ZHANG ; Chao LIU ; Youmin WANG ; Shengli WU ; Tao YANG ; Huacong DENG ; Lulu CHEN ; Tianshu ZENG ; Jiajun ZHAO ; Yiming MU ; Weiqing WANG ; Guang NING ; Jieli LU ; Min XU ; Yufang BI ; Weiguo HU
Frontiers of Medicine 2025;19(1):79-89
This study aimed to comprehensively examine the association of gallstones, cholecystectomy, and cancer risk. Multivariable logistic regressions were performed to estimate the observational associations of gallstones and cholecystectomy with cancer risk, using data from a nationwide cohort involving 239 799 participants. General and gender-specific two-sample Mendelian randomization (MR) analysis was further conducted to assess the causalities of the observed associations. Observationally, a history of gallstones without cholecystectomy was associated with a high risk of stomach cancer (adjusted odds ratio (aOR)=2.54, 95% confidence interval (CI) 1.50-4.28), liver and bile duct cancer (aOR=2.46, 95% CI 1.17-5.16), kidney cancer (aOR=2.04, 95% CI 1.05-3.94), and bladder cancer (aOR=2.23, 95% CI 1.01-5.13) in the general population, as well as cervical cancer (aOR=1.69, 95% CI 1.12-2.56) in women. Moreover, cholecystectomy was associated with high odds of stomach cancer (aOR=2.41, 95% CI 1.29-4.49), colorectal cancer (aOR=1.83, 95% CI 1.18-2.85), and cancer of liver and bile duct (aOR=2.58, 95% CI 1.11-6.02). MR analysis only supported the causal effect of gallstones on stomach, liver and bile duct, kidney, and bladder cancer. This study added evidence to the causal effect of gallstones on stomach, liver and bile duct, kidney, and bladder cancer, highlighting the importance of cancer screening in individuals with gallstones.
Humans
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Mendelian Randomization Analysis
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Gallstones/complications*
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Female
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Male
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Cholecystectomy/statistics & numerical data*
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Middle Aged
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Risk Factors
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Aged
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Adult
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Neoplasms/etiology*
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Stomach Neoplasms/epidemiology*
2.Plasma club cell secretory protein reflects early lung injury: comprehensive epidemiological evidence.
Jiajun WEI ; Jinyu WU ; Hongyue KONG ; Liuquan JIANG ; Yong WANG ; Ying GUO ; Quan FENG ; Jisheng NIE ; Yiwei SHI ; Xinri ZHANG ; Xiaomei KONG ; Xiao YU ; Gaisheng LIU ; Fan YANG ; Jun DONG ; Jin YANG
Environmental Health and Preventive Medicine 2025;30():26-26
BACKGROUND:
It is inaccurate to reflect the level of dust exposure through working years. Furthermore, identifying a predictive indicator for lung function decline is significant for coal miners. The study aimed to explored whether club cell secretory protein (CC16) levels can reflect early lung function changes.
METHODS:
The cumulative respiratory dust exposure (CDE) levels of 1,461 coal miners were retrospectively assessed by constructed a job-exposure matrix to replace working years. Important factors affecting lung function and CC16 were selected by establishing random forest models. Subsequently, the potential of CC16 to reflect lung injury was explored from multiple perspectives. First, restricted cubic spline (RCS) models were used to compare the trends of changes in lung function indicators and plasma CC16 levels after dust exposure. Then mediating analysis was performed to investigate the role of CC16 in the association between dust exposure and lung function decline. Finally, the association between baseline CC16 levels and follow-up lung function was explored.
RESULTS:
The median CDE were 35.13 mg/m3-years. RCS models revealed a rapid decline in forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), and their percentages of predicted values when CDE exceeded 25 mg/m3-years. The dust exposure level (<5 mg/m3-years) causing significant changes in CC16 was much lower than the level (25 mg/m3-years) that caused changes in lung function indicators. CC16 mediated 11.1% to 26.0% of dust-related lung function decline. Additionally, workers with low baseline CC16 levels experienced greater reductions in lung function in the future.
CONCLUSIONS
CC16 levels are more sensitive than lung indicators in reflecting early lung function injury and plays mediating role in lung function decline induced by dust exposure. Low baseline CC16 levels predict poor future lung function.
Uteroglobin/blood*
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Humans
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Dust/analysis*
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Occupational Exposure/analysis*
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Male
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Middle Aged
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Adult
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Retrospective Studies
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Lung Injury/chemically induced*
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Coal Mining
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Biomarkers/blood*
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China/epidemiology*
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Air Pollutants, Occupational
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Female
3.TSZAF monomer combination downregulates the Wnt/β-catenin signaling pathway and inhibits neutrophil recruitment to prevent lung cancer metastasis.
Pan YU ; Jialiang YAO ; Long ZHANG ; Yanhong WANG ; Xinyi LU ; Jiajun LIU ; Zujun QUE ; Yao LIU ; Qian BA ; Jiwei LIU ; Yan WU ; Jianhui TIAN
Chinese Journal of Natural Medicines (English Ed.) 2025;23(9):1069-1079
Metastasis remains the primary cause of cancer-related mortality worldwide. Circulating tumor cells (CTCs) represent critical targets for metastasis prevention and treatment. Traditional Chinese medicine may prevent lung cancer metastasis through long-term intervention in CTC activity. Tiao-Shen-Zhi-Ai Formular (TSZAF) represents a Chinese medicine compound prescription utilized clinically for lung cancer treatment. This study combined three principal active ingredients from TSZAF into a novel TSZAF monomer combination (TSZAF mc) to investigate its anti-metastatic effects and mechanisms. TSZAF mc demonstrated significant inhibition of proliferation, migration, and invasion in CTC-TJH-01 and LLC cells, while inducing cellular apoptosis in vitro. Moreover, TSZAF mc substantially inhibited LLC cell growth and metastasis in vivo. Mechanistically, TAZSF mc significantly suppressed the Wnt/β-catenin signaling pathway and CXCL5 expression in lung cancer cells and tissues. Additionally, TAZSF mc notably reduced neutrophil infiltration in metastatic lesions. These findings indicate that TSZAF mc inhibits lung cancer growth and metastasis by suppressing the Wnt/β-catenin signaling pathway and reducing CXCL5 secretion, thereby decreasing neutrophil recruitment and infiltration. TSZAF mc demonstrates potential as an effective therapeutic agent for lung cancer metastasis.
Lung Neoplasms/genetics*
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Wnt Signaling Pathway/drug effects*
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Animals
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Humans
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Drugs, Chinese Herbal/pharmacology*
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Mice
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Neoplasm Metastasis/prevention & control*
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Cell Proliferation/drug effects*
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Cell Line, Tumor
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Neutrophil Infiltration/drug effects*
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Down-Regulation/drug effects*
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Cell Movement/drug effects*
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beta Catenin/genetics*
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Apoptosis/drug effects*
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Mice, Inbred C57BL
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Male
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Neoplastic Cells, Circulating/drug effects*
4.Exploration on the Mechanism of Danggui Sini Decoction in Treating Knee Osteoarthritis Based on Network Pharmacology and Experimental Validation
Mingzhan LIANG ; Yongju YANG ; Heshan YU ; Xuefeng GUAN ; Yuanhe FAN ; Jiajun LIU
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(10):32-40
Objective To explore the mechanism of Danggui Sini Decoction in treating knee osteoarthritis(KOA)by using network pharmacology,combined with in vitro experimental verification.Methods The active components of Danggui Sini Decoction were retrieved and screened through TCMSP,CNKI and PubMed databases,and their corresponding targets were predicted using the SwissTarget Prediction platform.KOA related targets were retrieved from GeneCards and OMIM databases.Intersection of drug targets and KOA targets was obtained,and key components,core targets,and their related biological mechanisms were identified through network topology analysis,GO and KEGG pathway enrichment analysis.Molecular docking was used to verify the degree of binding between key components and core targets.Danggui Sini Decoction containing serum was prepared,and an in vitro KOA model was constructed by inducing rat articular chondrocytes with lipopolysaccharide.The CCK-8 method was used to screen for the optimal concentration of drug containing serum intervention,fluorescent probes were used to detect intracellular ROS content,immunofluorescence was used to detect NF-κB p65 nuclear translocation,RT-qPCR was used to detect the expressions of IL-6,IL-1β and TNF-α mRNA,Western blot was used to detect the expression of Toll-like receptor 4(TLR4),myeloid differentiation factor 88(MyD88),NF-κB p65 and p-NF-κB p65 proteins.Results The results of network pharmacology analysis indicated that the treatment of KOA with Danggui Sini Decoction may involve regulating Toll like receptors,MAPK,TNF,apoptosis and other inflammatory and aging signaling pathways,compounds such as quercetin,kaempferol and glycyrrhizin may play important roles.Core targets included IL6,IL1B,TNF,TLR4,NFKB1,JUN,MAPK1,RELA.In vitro experiments showed that compared with the blank group,the ROS content in chondrocytes of the model group significantly increased(P<0.01),NF-κB p65 protein was significantly nuclear translocation(P<0.01),and mRNA expressions of IL-6,IL-1β,TNF-α mRNA and protein expressions of TLR4,MyD88 and p-NF-κB p65 significantly increased(P<0.01);compared with the model group,the intervention of Danggui Sini Decoction containing serum could significantly reduce intracellular ROS content(P<0.05),inhibit NF-κB p65 nuclear translocation(P<0.01),and reduce the expression of inflammatory factor mRNA and related proteins(P<0.05,P<0.01).Conclusion Danggui Sini Decoction can significantly reduce the inflammatory response of rat articular chondrocytes induced by lipopolysaccharide and exert therapeutic effects on KOA.Its mechanism may be related to the inhibition of TLR4/MyD88/NF-κB pathway.
5.Expert consensus on surgical treatment and rehabilitation for competitive sports athletes returning to sports after anterior cruciate ligament injury (version 2025)
Kai HUANG ; Lunhao BAI ; Qing BI ; Hong CHEN ; Jiwu CHEN ; Xuesong DAI ; Wenyong FEI ; Weili FU ; Zhizeng GAO ; Lin GUO ; Yinghui HUA ; Jingmin HUANG ; Suizhu HUANG ; Xuan HUANG ; Jian LI ; Qiang LI ; Shuzhen LI ; Yanlin LI ; Yunxia LI ; Zhong LI ; Ning LIU ; Yuqiang LIU ; Wei LU ; Hongbin LYU ; Haile PAN ; Xiaoyun PAN ; Chao QI ; Weiliang SHEN ; Luning SUN ; Jin TANG ; Zimin WANG ; Bide WANG ; Ru WANG ; Shaobai WANG ; Licheng WEI ; Weidong XU ; Yongsheng XU ; Jizhou YANG ; Liang YANG ; Rui YANG ; Hongbo YOU ; Tengbo YU ; Jiakuo YU ; Bing YUE ; Hua ZHANG ; Hui ZHANG ; Qingsong ZHANG ; Xintao ZHANG ; Jiajun ZHAO ; Lilian ZHAO ; Qichun ZHAO ; Song ZHAO ; Jiapeng ZHENG ; Jiang ZHENG ; Zhi ZHENG ; Jingbin ZHOU ; Jinzhong ZHAO
Chinese Journal of Trauma 2025;41(4):325-338
With the rapid development of competitive sports, the incidence of anterior cruciate ligament (ACL) injury is on the rise. Such injuries may shorten athletes′ career and lead to other long-term adverse consequences. Although athletes generally recover well after ACL reconstruction, many still struggle to return to their pre-injury performance levels. Advances in the understanding of ACL anatomy and injury mechanisms, along with the evolution of surgical techniques and rehabilitation methods, have provided more individualized and tailored options for athletes following ACL injuries. However, there is currently no consensus in China regarding surgical and rehabilitation strategies for competitive athletes aiming to return to sports after ACL injuries. To this end, the Sports Medicine Committee of the Chinese Research Hospital Association and the Editorial Board of the Chinese Journal of Trauma jointly formulated the Expert consensus on surgical treatment and rehabilitation for competitive sports athletes returning to sports after anterior cruciate ligament injury ( version 2025), and presented 14 recommendations covering surgical indications, preoperative rehabilitation, surgical timing, surgical strategies and postoperative rehabilitation strategies, aiming to improve the surgical treatment and rehabilitation system for ACL injuries in competitive athletes and facilitate their return to high-level sports performance after injury.
6.Shentong Zhuyutang Regulates SIRT1/Nrf2 Pathway to Ameliorate Intervertebral Disc Degeneration in Rats
Jiajun HUANG ; Diyou WU ; Guangyi TAO ; Yu ZHAO ; Junqing HUANG ; Bin YANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(3):29-39
ObjectiveTo study the effect and mechanism of Shentong Zhuyutang in treating intervertebral disc degeneration (IDD) in rats. MethodsIn the cell experiment, male rats were administrated with normal saline or low-, medium-, and high-dose (3.38, 6.75,13.5 g·kg-1, respectively) Shentong Zhuyutang by gavage, respectively, and serum samples were collected after 7 days of continuous administration. Another 10 male rats were selected for the isolation of nucleus pulposus cells. The cell model of IDD was established by treatment with interleukin (IL)-1β. The modeled cells were then treated with Shentong Zhuyutang-containing serum and the ferroptosis inhibitor ferrostatin-1 (Fer-1), respectively, to investigate the effects of Shentong Zhuyutang-containing serum on the proliferation and ferroptosis of nucleus pulposus cells. To study the role of silent information regulator 1 (SIRT1)/nuclear factor erythroid 2-related factor 2 (Nrf2) in the regulation of ferroptosis in nucleus pulposus cells by Shentong Zhuyutang-containing serum, this study treated the cells with the SIRT1 inhibitor Ex 527 and the Nrf2 inhibitor ML385, respectively, in addition to the treatment with IL-1β and high-dose Shentong Zhuyutang-containing serum. The cell-counting kit-8 (CCK-8) assay and EdU staining were employed to measure the cell viability and proliferation, respectively. The Fe2+, glutathione (GSH), and malondiadehyde (MDA) levels were measured by colorimetric assay. Western blot was employed to determine the protein levels of glutathione peroxidase 4 (GPX4), acyl-CoA synthetase long-chain family 4 (ACSL4), Collagen Ⅱ, Aggrecan, SIRT1, and Nrf2. Immunofluorescence was used detect SIRT1 expression. In the animal experiment, male rats were treated with anulus puncture for the modeling of IDD. Rats were randomly assigned into sham operation, model, Shentong Zhuyutang-containing serum (13.5 g·kg-1), and positive control (nimesulide dispersible tablets, 0.18 mg·kg-1) groups. Rats in the drug intervention groups were administrated with corresponding agents at 1 mL·kg-1, and those in the sham operation and model groups were administrated with equal volumes of normal saline, once daily for 28 consecutive days. At the end of the last administration, the histopathological changes in the intervertebral discs of rats were observed by hematoxylin-eosin staining and scored by the Masuda method. Western blot was employed to determine the protein levels of SIRT1, Nrf2, GPX4, and Collagen Ⅱ in the nucleus pulposus tissue. ResultsCompared with the control group, the IL-1β group of nucleus pulposus cells showed elevated levels of Fe2+, MDA, and ACSL4 (P<0.05), decreased cell viability, lowered GSH level, and down-regulated protein levels of GPX4, Collagen Ⅱ, and Aggrecan (P<0.05). Shentong Zhuyutang-containing serum and Fer-1 reversed the effects of IL-1β on the viability and ferroptosis of nucleus pulposus cells and up-regulated the protein levels of Collagen Ⅱ and Aggrecan in nucleus pulposus cells (P<0.05). Compared with the control group, the IL-1β group showcased down-regulated expression of Sirt1 and Nrf2 in nucleus pulposus cells (P<0.05). Compared with the IL-1β group, the high-dose Shentong Zhuyutang-containing serum+IL-1β group showed up-regulated expression of SIRT1 and Nrf2 in nucleus pulposus cells (P<0.05). Compared with the high-dose Shentong Zhuyutang-containing serum+IL-1β group, the ML385 group showed down-regulated protein levels of Nrf2 and GPX4, lowered GSH level, and elevated Fe2+ and MDA levels (P<0.05). In addition, the Ex 527 group showed down-regulated protein levels of SIRT1, Nrf2, and GPX4 (P<0.05). The results of the animal experiment showed that compared with the sham operation group, the model group had severe degeneration of the intervertebral disc tissue with increased pathological score, up-regulated protein level of ACSL4 (P<0.05), and down-regulated protein levels of SIRT1, Nrf2, GPX4, and Collagen Ⅱ (P<0.05). Compared with the model group, the Shentong Zhuyutang group showed alleviated IDD with declined pathological score, down-regulated protein level of ACSL4 (P<0.05), and up-regulated protein levels of SIRT1, Nrf2, GPX4, and Collagen Ⅱ (P<0.05). ConclusionShentong Zhuyutang may activate the SIRT1/Nrf2 signaling pathway to inhibit the ferroptosis of nucleus pulposus cells, thereby delaying the process of IDD in rats.
7.Collagen-based micro/nanogel delivery systems: Manufacturing, release mechanisms, and biomedical applications.
Bowei DU ; Shuhan FENG ; Jiajun WANG ; Keyi CAO ; Zhiheng SHI ; Cuicui MEN ; Tengfei YU ; Shiqi WANG ; Yaqin HUANG
Chinese Medical Journal 2025;138(10):1135-1152
Collagen-based materials, renowned for their biocompatibility and minimal immunogenicity, serve as exemplary substrates in a myriad of biomedical applications. Collagen-based micro/nanogels, in particular, are valued for their increased surface area, tunable degradation rates, and ability to facilitate targeted drug delivery, making them instrumental in advanced therapeutics and tissue engineering endeavors. Although extensive reviews on micro/nanogels exist, they tend to cover a wide range of biomaterials and lack a specific focus on collagen-based materials. The current review offers an in-depth look into the manufacturing technologies, drug release mechanisms, and biomedical applications of collagen-based micro/nanogels to address this gap. First, we provide an overview of the synthetic strategies that allow the precise control of the size, shape, and mechanical strength of these collagen-based micro/nanogels by controlling the degree of cross-linking of the materials. These properties are crucial for their performance in biomedical applications. We then highlight the environmental responsiveness of these collagen-based micro/nanogels, particularly their sensitivity to enzymes and pH, which enables controlled drug release under various pathological conditions. The discussion then expands to include their applications in cancer therapy, antimicrobial treatments, bone tissue repair, and imaging diagnosis, emphasizing their versatility and potential in these critical areas. The challenges and future perspectives of collagen-based micro/nanogels in the field are discussed at the end of the review, with an emphasis on the translation to clinical practice. This comprehensive review serves as a valuable resource for researchers, clinicians, and scientists alike, providing insights into the current state and future directions of collagen-based micro/nanogel research and development.
Collagen/chemistry*
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Drug Delivery Systems/methods*
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Humans
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Tissue Engineering/methods*
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Animals
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Biocompatible Materials/chemistry*
8.Functional near-infrared spectroscopic imaging characteristics of depressed pregnant women in mid-to-late pregnancy and its relationship with depression
Zhendong LEI ; Bo YU ; Jiajun XU ; Bihui CHENG ; Min JIN
Sichuan Mental Health 2025;38(6):505-510
BackgroundDepression in mid-to-late pregnancy has significant negative effects on pregnant women and their offspring. Previous studies have shown that pregnant women with depression in mid-to-late pregnancy exhibit lower frontal lobe activation levels, but the activation phase and its impact on depression require further investigation. ObjectiveTo analyze the functional near-infrared spectroscopy (fNIRS) features of depressed pregnant women in mid-to-late pregnancy, and to provide references for assisting in the clinical screening of depression in them. MethodsA total of 40 pregnant women in mid to late pregnancy with Edinburgh Postnatal Depression Scale (EPDS) score above 11 who underwent prenatal examination at the department of obstetrics of the Third Hospital of Mianyang from September 2023 to July 2024 were included as the study group. During the same period, 40 pregnant women in mid-to-late pregnancy with EPDS score below 11 who were matched with the age, family history, and past history of the study group were recruited as the control group. A self-designed questionnaire was used to collect basic information of the pregnant women. The fNIRS technique was used to measure the prefrontal and temporal lobe integral values and center of gravity values during the verbal fluency task (VFT) pregnant women in mid-to-late pregnancy. Spearman correlation analysis was conducted to examine the correlation between EPDS scores and fNIRS imaging features, as well as demographic characteristics, in mid-to-late pregnant women with depression. Multiple linear regression was used to analyze the influencing factors of depression symptoms in this population. ResultsStatistically significant differences were observed between the study group and the control group in terms of educational level and body mass index (BMI) (χ2/t=4.528, 2.292, P<0.05). The study group demonstrated a lower prefrontal integral value and a higher prefrontal center of gravity value compared with the control group (t=-7.601, 5.641, P<0.05). EPDS scores of depressed pregnant women in mid-to-late pregnancy were negatively correlated with prefrontal lobe integral value (r=-0.680, P<0.01), while positively correlated with prefrontal lobe center of gravity value and BMI (r=0.737, 0.604, P<0.01). Multiple linear regression analysis showed that age (β=-0.214, P<0.01), BMI (β=0.340, P<0.01), prefrontal integral value (β=-0.351, P<0.01), and prefrontal center of gravity value (β=0.347, P<0.01) were influencing factors of depressive symptoms in pregnant women in mid-to-late pregnancy. ConclusionThe prefrontal lobe activation degree of depressed pregnant women in mid-to-late pregnancy is lower than that of non-depressed pregnant women, and the activation phase is delayed. Age, prefrontal lobe integral value, prefrontal center of gravity value and BMI may be the influencing factors of depressive symptoms in pregnant women in the middle and late pregnancy.
9.Mechanistic study of Yigan Fupi decoction-mediated repair of the intestinal barrier and reduction of IBS sensitivity through regulation of the PKA/PKC-CREB pathway
Yu CHEN ; Jiajun SHI ; Danting FU ; Qinqin YANG ; Rui FU ; Jiajie ZHU ; Mingjin ZHU ; Xinying LIU ; Mingxian CHEN
Acta Laboratorium Animalis Scientia Sinica 2025;33(4):512-521
Objective To study the therapeutic effects of Yigan Fupi decoction(YGFP)on irritable bowel syndrome(IBS)and its mechanism of action in repairing the intestinal barrier and reducing IBS sensitivity through the PKA/PKC-CREB pathway.Methods Baby rats separated from their mother were randomly divided into a model control(M)and a YGFP group,while baby rats without maternal separation were used as a normal control(N)group.The YGFP group was given YGFP for 4 weeks.Abdominal withdrawal reflux was used to evaluate intestinal sensitivity.Liquid chromatography tandem mass spectrometry and ELISA were used to detect bile acid metabolite concentrations and serum levels of interleukin(IL)-6 and CXCL1,respectively.HE staining was used to observe pathological changes in the colon,and Western Blot and immunohistochemistry were used to analyze the relative protein expression levels of PKA,PKC,CREB,5HT2AR,5-HT7R,ZO-1,and Claudin 1.Results Compared with the normal control group,the M group showed a significantly decreased visceral pain threshold,significantly increased levels of total bile acid metabolites,IL-6,and CXCL1,significantly increased relative expression of PKA,PKC,CREB,5HT2AR,and 5-HT7R,and significantly decreased relative expression of ZO-1 and Claudin 1.Compared with the M group,the YGFP group showed a significantly increased visceral pain threshold,significantly reduced levels of total bile acid metabolites,IL-6,and CXCL1,significantly reduced relative expression of PKA,PKC,CREB,5HT2AR,and 5-HT7R,and increased relative expression of ZO-1 and Claudin 1.Conclusions YGFP effectively improved IBS through a mechanism that may involve repair of the intestinal barrier and reduced sensitivity through the PKA/PKC-CREB pathway.
10.Pueraria lobata decoction intervenes in neuroinflammatory response and apoptosis in rats with cervical spondylotic myelopathy
Diyou WU ; Jiajun HUANG ; Guangyi TAO ; Yu ZHAO ; Junqing HUANG ; Bin YANG ; Yun XUE
Chinese Journal of Tissue Engineering Research 2025;29(20):4249-4257
BACKGROUND:Inflammation and apoptosis play key roles in the pathological process of cervical spondylotic myelopathy.Previous studies have shown that Pueraria lobata decoction has favorable therapeutic effects on cervical spondylotic myelopathy.OBJECTIVE:To investigate the effects and mechanism of Pueraria lobata decoction in neuroinflammatory response and apoptosis in rats with cervical spondylotic myelopathy.METHODS:Sixty Sprague-Dawley rats were randomly divided into six groups:a normal group,a sham-operated group,a model group,and three groups that received low,medium,and high doses of Pueraria lobata decoction.An animal model of cervical spondylotic myelopathy was constructed through compression of the spinal cord with water-absorbing and expanding material.Gastric administration of Pueraria lobata decoction(4.86,9.72,and 19.44 g/kg)was given in the three Pueraria lobata decoction groups 2 weeks after surgery,and the resting groups were given saline by gavage,once daily for 4 weeks.Motor function evaluation(Basso-Beattie-Bresnahan score)was performed in rats on days 1,7,14,21 and 28 after drug administration.At 4 weeks after drug administration,hematoxylin-eosin staining was used to observe the pathomorphologic changes in spinal cord tissue;immunofluorescence double staining was used for the detection of microglial cell polarization in spinal cord tissue;quantitative fluorescence PCR was used to detect the changes in the expression of interleukin-6 and interleukin-1β mRNA;western blot assay was used to detect the protein expression of p-NF-κB p65,NF-κB p65,NLRP3,ASC,Cleaved Caspase-1,Bax,Bcl-2,Cleaved Caspase-3,NOX4,p-Drp1,Drp1,and Mfn2 in spinal cord tissues;TUNEL assay was used to detect apoptosis in spinal cord tissues;and DHE staining was used to detect reactive oxygen species levels in rat spinal cord tissues.RESULTS AND CONCLUSION:(1)Compared with the normal and sham-operated groups,reduced Basso-Beattie-Bresnahan scores were observed in the model group(P<0.05),spinal cord neurons were crumpled and malformed with vacuolike changes.The Basso-Beattie-Bresnahan scores in the low-,medium-and high-dose Pueraria lobata decoction groups were significantly higher than those in the model group(P<0.05),and spinal cord neuronal damage reduced significantly.(2)Compared with the normal and sham-operated groups,there were elevated levels of Iba-1 and inducible nitric oxide synthase proteins and increased interleukin-6 and interluekin-1β mRNA expression in the spinal cord tissue of rats in the model group(P<0.05).The expression levels of Iba-1,inducible nitric oxide synthase,p-NF-κB,NLRP3,ASC and cleaved caspase-1 proteins as well as interleukin-6 and interleukin-1β mRNAs in the spinal cord tissues of rats in the low-,medium-and high-dose Pueraria lobata decoction groups were reduced compared with those in the model group(P<0.05).(3)Compared with the normal and sham-operated groups,the rate of TUNEL-positive cells and the levels of Bax and cleaved caspase-3 proteins were increased in the spinal cord tissues of rats in the model group(P<0.05),while the expression of Bcl-2 protein was reduced(P<0.05).Compared with the model group,the above indexes were significantly improved in the low-,medium-and high-dose Pueraria lobata decoction groups.(4)Compared with the normal and sham-operated groups,the model group exhibited increased levels of reactive oxygen species,along with elevated expression of NOX4 and p-Drp1 proteins(P<0.05)and reduced expression of Mfn2 protein(P<0.05)in the rat spinal crod tissue.Compared with the model group,the low-,medium-,and high-dose Pueraria lobata decoction groups exhibited reduced levels of reactive oxygen species,as well as decreased expression of NOX4 and p-Drp1 proteins(P<0.05)and increased expression of Mfn2 protein(P<0.05)in the rat spinal cord tissue.To conclude,Pueraria lobata decoction inhibits neuroinflammatory responses and neuronal apoptosis in the rat model of cervical spondylotic myelopathy,and the mechanism of action may be related to the regulation of the NOX4/reactive oxygen species/DRP1 signaling pathway.

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