1.Mechanistic Study on Tougu Xiaotong Capsules in Regulating PANoptosis to Delay Degeneration of Chondrocytes in Knee Osteoarthritis
Jinxia YE ; Yixin LIN ; Xiaoqing LEI ; Yanfeng HUANG ; Changlong FU ; Desen LI ; Wenyi WANG ; Lan WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):149-161
ObjectiveTo investigate the effect of Tougu Xiaotong capsules (TGXTC) on the regulation of chondrocyte PANoptosis, delay of chondrocyte degeneration, and improvement of the symptoms in knee osteoarthritis (KOA). MethodsIn vivo experiments: 50 male C57BL/6 mice were randomly assigned into five groups (n=10 per group): sham operation group, model group, low-dose TGXTC group (7.2 g·kg-1), high-dose TGXTC group (14.4 g·kg-1), and diclofenac sodium group (0.05 g·kg-1). Except for the sham group, KOA models were established in all other groups using the modified Hulth method. Following successful model induction, the TGXTC groups received daily oral gavage of 7.2 or 14.4 g·kg-1 for 6 weeks, while the diclofenac sodium group received 0.05 g·kg-1 solution daily over the same duration. Model evaluation was performed using Lequesne MG score; micro-computed tomography (micro-CT) was used to scan the knee, hematoxylin-eosin (HE) staining and safranin O-fast green staining were used to observe the morphology of cartilage, transmission electron microscopy (TEM) was used to determine ultrastructural changes of PANoptosis. Multiple immunofluorescence (IF) co-localization assays was performed to detect the co-localization of cleaved Caspase-3, receptor-interacting protein 3 (RlPK3), and the N-terminal domain of gasdermin D (GSDMD-N) in cartilage tissue, while western blot was employed to detect the expression levels of cleaved Caspase-3, RIPK3, and GSDMD-N. In vitro experiments: The knee cartilages of 4-week-old SD rats were isolated, and a chondrocyte in vitro culture system was established through mechanical digestion with 0.2% type Ⅱ collagenase. Second-generation chondrocytes were divided into three groups: the control group, the model group (pretreated with 10 mg·L-1 lipopolysaccharide (LPS) for 24 h followed by treatment with 1 μmol·L-1 nigericin for 4 h), and the TGXTC treatment group (pretreated with 10 mg·L-1 LPS for 24 h, followed by exposure to 1 μmol·L-1 nigericin for 4 h and subsequently treated with 100 mg·L-1 TGXTC for an additional 24 h). The levels of reactive oxygen species (ROS), apoptosis, necroptosis, and pyroptosis of chondrocytes were evaluated via fluorescence microscopy following staining with ROS detection, AO/EB and YO-PRO-1/PI staining kits. Transmission electron microscopy was utilized to investigate the ultrastructural changes associated with PANoptosis in cartilage tissue of KOA mice. Inflammatory cytokine levels (IL-1β and IL-18) were measured using ELISA. Western blot was conducted to assess protein expressions related to PANoptosis, including cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3. ResultsCompared with the sham group, the Lequesne MG scores were significantly up-regulated(P<0.01) in the model group, and the pathological changes of cartilage were significantly, with joint spaces narrower, osteophyte formation increased, secere abrasion of cartilage surface. Ultrastructural analysis revealed pronounced chondrocyte apoptosis, necroptosis, and pyroptosis, along with markedly elevated expression of cleaved Caspase-3, RlPK3, and GSDMD-N in cartilage tissue (P<0.01). In addition, The mean fluorescence intensities of ROS, orange-red fluorescence in AO/EB staining, green fluorescence and red fluorescence in YO-PRO-1/PI staining were increased of chondrocyte in the model group (P<0.01) . The levels of inflammatory factors IL-1β and IL-18 in the supernatant were increased (P<0.01). The expression of PANoptosis related proteins (cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3) were also significantly upregulated(P<0.05). Compared to the model group, the TGXTC group demonstrated a significant improvement in various parameters of mice. These included a reduction in the Lequesne MG score, an increase in joint space, a decrease in osteophyte formation, diminished cartilage damage, reduced release of ROS, and alleviation of apoptotic, necroptotic, and pyroptotic processes in chondrocytes. Additionally, mitochondrial swelling and endoplasmic reticulum dilation were also mitigated. The levels of ROS as well as IL-1β and IL-18 were significantly decreased (P<0.05). Furthermore, the expression levels of proteins associated with PANoptosis in cartilage tissue showed marked reductions (P<0.05). Similar results were observed in chondrocytes: cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3 exhibited significant decreases as well (P<0.05). ConclusionTGXTC may mitigate chondrocytes degeneration and alleviate KOA symptoms by reducing oxidative stress and suppressing the activation of PANoptosis pathways.
2.Mechanistic Study on Tougu Xiaotong Capsules in Regulating PANoptosis to Delay Degeneration of Chondrocytes in Knee Osteoarthritis
Jinxia YE ; Yixin LIN ; Xiaoqing LEI ; Yanfeng HUANG ; Changlong FU ; Desen LI ; Wenyi WANG ; Lan WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):149-161
ObjectiveTo investigate the effect of Tougu Xiaotong capsules (TGXTC) on the regulation of chondrocyte PANoptosis, delay of chondrocyte degeneration, and improvement of the symptoms in knee osteoarthritis (KOA). MethodsIn vivo experiments: 50 male C57BL/6 mice were randomly assigned into five groups (n=10 per group): sham operation group, model group, low-dose TGXTC group (7.2 g·kg-1), high-dose TGXTC group (14.4 g·kg-1), and diclofenac sodium group (0.05 g·kg-1). Except for the sham group, KOA models were established in all other groups using the modified Hulth method. Following successful model induction, the TGXTC groups received daily oral gavage of 7.2 or 14.4 g·kg-1 for 6 weeks, while the diclofenac sodium group received 0.05 g·kg-1 solution daily over the same duration. Model evaluation was performed using Lequesne MG score; micro-computed tomography (micro-CT) was used to scan the knee, hematoxylin-eosin (HE) staining and safranin O-fast green staining were used to observe the morphology of cartilage, transmission electron microscopy (TEM) was used to determine ultrastructural changes of PANoptosis. Multiple immunofluorescence (IF) co-localization assays was performed to detect the co-localization of cleaved Caspase-3, receptor-interacting protein 3 (RlPK3), and the N-terminal domain of gasdermin D (GSDMD-N) in cartilage tissue, while western blot was employed to detect the expression levels of cleaved Caspase-3, RIPK3, and GSDMD-N. In vitro experiments: The knee cartilages of 4-week-old SD rats were isolated, and a chondrocyte in vitro culture system was established through mechanical digestion with 0.2% type Ⅱ collagenase. Second-generation chondrocytes were divided into three groups: the control group, the model group (pretreated with 10 mg·L-1 lipopolysaccharide (LPS) for 24 h followed by treatment with 1 μmol·L-1 nigericin for 4 h), and the TGXTC treatment group (pretreated with 10 mg·L-1 LPS for 24 h, followed by exposure to 1 μmol·L-1 nigericin for 4 h and subsequently treated with 100 mg·L-1 TGXTC for an additional 24 h). The levels of reactive oxygen species (ROS), apoptosis, necroptosis, and pyroptosis of chondrocytes were evaluated via fluorescence microscopy following staining with ROS detection, AO/EB and YO-PRO-1/PI staining kits. Transmission electron microscopy was utilized to investigate the ultrastructural changes associated with PANoptosis in cartilage tissue of KOA mice. Inflammatory cytokine levels (IL-1β and IL-18) were measured using ELISA. Western blot was conducted to assess protein expressions related to PANoptosis, including cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3. ResultsCompared with the sham group, the Lequesne MG scores were significantly up-regulated(P<0.01) in the model group, and the pathological changes of cartilage were significantly, with joint spaces narrower, osteophyte formation increased, secere abrasion of cartilage surface. Ultrastructural analysis revealed pronounced chondrocyte apoptosis, necroptosis, and pyroptosis, along with markedly elevated expression of cleaved Caspase-3, RlPK3, and GSDMD-N in cartilage tissue (P<0.01). In addition, The mean fluorescence intensities of ROS, orange-red fluorescence in AO/EB staining, green fluorescence and red fluorescence in YO-PRO-1/PI staining were increased of chondrocyte in the model group (P<0.01) . The levels of inflammatory factors IL-1β and IL-18 in the supernatant were increased (P<0.01). The expression of PANoptosis related proteins (cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3) were also significantly upregulated(P<0.05). Compared to the model group, the TGXTC group demonstrated a significant improvement in various parameters of mice. These included a reduction in the Lequesne MG score, an increase in joint space, a decrease in osteophyte formation, diminished cartilage damage, reduced release of ROS, and alleviation of apoptotic, necroptotic, and pyroptotic processes in chondrocytes. Additionally, mitochondrial swelling and endoplasmic reticulum dilation were also mitigated. The levels of ROS as well as IL-1β and IL-18 were significantly decreased (P<0.05). Furthermore, the expression levels of proteins associated with PANoptosis in cartilage tissue showed marked reductions (P<0.05). Similar results were observed in chondrocytes: cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3 exhibited significant decreases as well (P<0.05). ConclusionTGXTC may mitigate chondrocytes degeneration and alleviate KOA symptoms by reducing oxidative stress and suppressing the activation of PANoptosis pathways.
3.Research progress on peripheral defocus-based optical interventions combined with other therapies for myopia control
Xiaoqing LIU ; Jinhai ZHONG ; Quan LIN
International Eye Science 2025;25(11):1814-1819
The global myopia epidemic presents a significant public health challenge, necessitating diverse intervention strategies. The primary objective of myopia management is to achieve a dual therapeutic effect: providing children with clear, comfortable, and sustained vision, while also curbing rapid myopic progression to prevent high myopia. Optical interventions based on the theory of peripheral retinal defocus have become first-line treatments owing to their dual capacity for vision correction and axial elongation control. For children with myopia who show suboptimal response to defocus-based optical interventions, combination therapy has gradually emerged as a new clinical trend. Current combination strategies primarily include defocus-based optical interventions combined with low-concentration atropine, red-light therapy, and vision training, among others. This review summarizes available evidence on these three combination strategies, focusing on clinical efficacy, safety, and underlying mechanisms, with the aim of supporting evidence-based and personalized myopia management plans for clinicians.
4.Association of peripheral blood glucose 6 phosphate dehydrogenase,progranulin and neutrophil CD64 index with disease outcomes of neonates with septicemia
Congcong ZHU ; Xiaochun CHEN ; Huai JIANG ; Zhendi XIE ; Xiaoqing LIN
Chinese Journal of Nosocomiology 2025;35(6):918-922
OBJECTIVE To explore the association of peripheral blood glucose 6 phosphate dehydrogenase(G6PD),progranulin(PGRN)and neutrophil CD64 index with the disease outcomes of the neonates with septicemia.METHODS A total of 147 neonates with septicemia who were treated in the Second Affiliated Hospital of Wenzhou Medical University from Jun.2021 to Nov.2023 were assigned as the septicemia group,meanwhile,140 healthy neonates were chosen as the healthy group.The neonates of the septicemia group were divided into the early-onset group and the late-onset group according to the type of disease,the non-critically severe group,the critically se-vere group and the extremely critically severe group according to the severity of diseases,the survival group and the death group according to 30-day prognosis.The levels of peripheral blood G6PD,PGRN and neutrophil CD64 indexes were observed and compared among the various types of groups,and the values of the peripheral blood in-dexes in prediction of the prognosis were analyzed.RESULTS The peripheral blood G6PD level of the septicemia group was significantly lower than that of the healthy group,the levels of PGRN and neutrophil CD64 index of the septicemia group were significantly higher than those of the healthy group(P<0.05).As compared with the pe-ripheral blood G6PD level among the neonates with different illness condition,the result was as follows:the non-critically severe group>the critically severe group>the extremely critically severe group(P<0.05);as com-pared with the levels of PGRN and neutrophil CD64 index,the result was as follows:the non-critically severe group<the critically severe group<the extremely critically severe group(P<0.05).The peripheral blood G6PD level of the death group was significantly lower than that of the survival group(P<0.05),and the levels of PGRN and neutrophil CD64 index of the death group were significantly higher than those of the survival group(P<0.05).The area under the curve(AUC)of the joint detection of peripheral blood G6PD,PGRN and CD64 index was 0.831 in prediction of the prognosis of the neonates,significantly higher than that of the single detection of the three indexes(P<0.05).CONCLUSIONS The neonates with septicemia show the decline of peripheral blood G6PD and the rise of levels of PGRN and CD64 index.The expression levels of the indexes are associated with the severi-ty of disease and,to some extent,can predict the prognosis.
5.Evaluation of endometrial receptivity in infertile patients using multimodal ultrasound combined with sex hormone detection
Yanhua DING ; Jiqin YAO ; Zhenyun LIN ; Xiaoling ZHU ; Xiaoqing ZHU
China Modern Doctor 2025;63(7):24-27
Objective To explore the value of multimodal ultrasound combined with sex hormone detection in evaluating endometrial receptivity in infertile patients.Methods Ninety-five infertile patients who received in vitro fertilization and embryo transfer treatment in Hangzhou Women's Hospital from January 2020 to February 2023 were selected as study objects,and they were divided into pregnant group(55 cases)and non-pregnant group(40 cases)according to the pregnancy status of the first embryo transfer.Sex hormone levels and multimodal ultrasound scores were compared between two groups,and receiver operating characteristic(ROC)curve was drawn to evaluate the value of each indicator in predicting pregnancy of infertile patients individually and in combination.Results The endometrial thickness score,endometrial volume score,vascular blood flow score and multimodal ultrasound score of pregnant group were significantly higher than those of non-pregnant group(P<0.05).The levels of luteinizing hormone(LH),estradiol(E2)and progesterone(P)in pregnant group were significantly higher than those in non-pregnant group(P<0.05).ROC curve results showed that the area under the curve(AUC)of LH,E2 and multimodal ultrasound scores in predicting pregnancy in infertile patients were all>0.7,which had certain predictive value,and the three indicators combined with P had the highest predictive value,with an AUC of 0.889.Conclusion The combination of multimodal ultrasound and sex hormone detection can effectively evaluate the endometrial receptivity of infertile patients,and has certain reference value for predicting the pregnancy status of infertile patients.
6.The efficacy and safety of nebulized inhalation of recombinant human interferon α1b in the treatment of pediatric respiratory syncytial viral associated lower respiratory tract infections: a multicenter, randomized, double-blind, placebo-controlled phase Ⅲ clinical study
Xiaohui LIU ; Baoping XU ; Yunxiao SHANG ; Han ZHANG ; Zhenkun ZHANG ; Guangyu LIN ; Ju YIN ; Aihua CUI ; Guocheng ZHANG ; Zhaoling SHI ; Liwei GAO ; Chunming JIANG ; Junmei BIAN ; Yongjian HUANG ; Rongfang ZHANG ; Xiaomei LIU ; Xiaoqing YANG ; Yu TANG ; Lili ZHONG ; Hongmei QIAO ; Chuangli HAO ; Yuqing WANG ; Qubei LI ; Ling CAO ; Yungang YANG ; Ling LU ; Rongjun LIN ; Xingzhen SUN ; Wei ZHOU ; Qiang CHEN ; Jikui DENG ; Yuejie ZHENG ; Lin ZHAO ; Tao AI ; Xiaohong LIU ; Xiaoxia LU ; Ning JIANG ; Ming LI
Chinese Journal of Applied Clinical Pediatrics 2025;40(3):180-186
Objective:To evaluate the efficacy and safety of nebulized inhalation of recombinant human interferon (IFN) α1b injection in the treatment of respiratory syncytial virus (RSV) associated lower respiratory tract infections (pneumonia and bronchiolitis) in children.Methods:A randomized, double-blind, parallel, placebo-controlled add-on design was used.Children with pneumonia or bronchiolitis aged 2 months to 5 years who tested positive for RSV antigen within 72 hours of onset from 30 clinical trial sites including Beijing Children′s Hospital, Capital Medical University between February 2021 and December 2022 were included in this study and randomly divided into 2 groups at a ratio of 1∶1 based on a stratified-block method.Both groups received basic treatments such as cough control, asthma relieving, expectorant treatment, fever reduction, oxygen therapy, etc.The experimental group received additional nebulized inhalation of IFN α1b injection at a dose of 2.0 μg/(kg·time), twice a day.The control group received nebulized inhalation of placebo twice a day.Clinical efficacy was evaluated based on indicators such as the duration of clinical symptoms and signs, and the Kaplan-Meier method was used to calculate the median and 95% CI of the duration of clinical symptoms and signs.The Log-rank test was used to compared data between groups.Safety was assessed through the incidence of adverse reactions and laboratory tests, and the Chi-square test was used to analyze the difference between groups. Results:There were 123 children in the experimental group and 122 children in the control group.The median durations of all the 5 clinical symptoms and signs [including shortness of breath, wheezing, dyspnea (visible retractions), decreased transcutaneous oxygen saturation, and abnormal mental state] in the experimental group after treatment were slightly shortened than those in the control group [2.7 d(95% CI: 1.9-3.0 d)] vs.[2.9 d(95% CI: 2.6-3.6 d), P=0.027].The improvement in dyspnea (retractions) was especially pronounced in the experimental group, with a relief rate of 50.0% (0, 100%) on the first day of administration[compared with 0 (0, 50.0%) in the control group ( Z=2.002, P=0.025)].The median duration of dyspnea in the experimental group was nearly 1 day shorter than that in the control group [1.0 d(95% CI: 0.7-1.7 d) vs.1.8 d(95% CI: 1.0-2.5 d), P=0.046].There were no significant difference in hospital stay [6.0(5.0, 8.0) d vs.6.5(5.0, 8.0) d, Z=0.675, P=0.500], oxygen therapy duration [32.0(14.0, 96.3) h vs.39.0 (24.0, 83.2) h, Z=0.094, P=0.925], the recovery rate from clinical symptoms during treatment [(105/106, 99.1%) vs.(96/101, 95.0%)], and recurrence rate [(0/106, 0) vs.(2/101, 2.0%)] between the 2 groups (all P>0.05).However, the above-mentioned four indicators in the experimental group showed a trend of clinical benefits.The quantitative virus detection results showed that the RSV viral load in both groups decreased after treatment compared to before treatment.After 2 days of treatment, the decline rate of RSV viral load from the baseline was 0.90 lg copies/(mL·d) in the experimental group and 0.25 lg copies/(mL·d)in the control group, with a statistically significant difference ( P<0.05).Furthermore, there was no statistically significant difference in the incidence of adverse reactions between the 2 groups ( P>0.05).Importantly, no drug-related serious adverse reactions occurred in both groups. Conclusions:The nebulized inhalation therapy of IFN α1b demonstrates efficacy and safety in treating pediatric RSV associated lower respiratory tract infections.It particularly offers outstanding clinical therapeutic value for severe children.
7.Research Hotspots and Trends of Growth Mindset in Medical Education: A Bibliometric Analysis
Ning ZHANG ; Gechong RUAN ; Yang JIAO ; Xiaoqing LIU ; Jonathan LIO ; Lin KANG
Medical Journal of Peking Union Medical College Hospital 2025;16(6):1501-1510
This study aims to analyze the international research trends and frontier hotspots related to the application of growth mindset in medical education from 2016 to 2024. The objective is to provide insights and references for the development of relevant research in China. The Web of Science Core Collection and Scopus databases were searched for English-language literature on the application of growth mindset in medical education, published between January 1, 2016, and December 15, 2024. VOSviewer (v.1.6.18) software was utilized to extract bibliographic information and generate diagrams that illustrate cooperation networks among countries, regions, and authors. Additionally, CiteSpace (v.6.1.R6) software was employed to perform co-occurrence and cluster analyses on various datasets, including those pertaining to document authors and countries/regions. From 2016 to 2024, a total of 109 articles, comprising 92 research papers and 17 review articles, were published on the application of growth mindset in medical education. The annual publication volume exhibited a significant upward trend overall. The United States emerged as the country with the highest number of publications, totaling 77 (70.6%), as well as the highest citation frequency, with 1191 citations (57.5%) in this domain. The Uniformed Services University of the Health Sciences and Mayo Clinic ranked as the two institutions with the highest citation frequency, recording 423 and 417 citations, respectively. Professor Carol S.Dweck of Stanford University holds the title for the highest total citation frequency in this field, with 128 citations, while Anthony R.Artino from the Uniformed Services University of the Health Sciences has the highest citation frequency for individual publications, totaling 383 citations. High-frequency keywords primarily encompass " academic success ""academic performance ""resilience ""professional development", and "faculty develop-ment", all of which underscore the outcomes of medical education. Additionally, the terms "undergraduate medical education" and "graduate medical education" delineate the target groups within this field. Furthermore, "coaching""feedback", and "competency-based education" emphasize the pedagogical approaches employed in this educational context. Since 2016, the application of the growth mindset in medical education-related research has garnered significant disciplinary attention. Developed countries, particularly the United States, are at the forefront of this field. Currently, the research focus encompasses teaching methods, educational goals, and the educational psychology associated with the application of the growth mindset in medical education, as well as its role in enhancing the well-being and mental health of medical students. Practically, the experiences of the Pritzker School of Medicine at the University of Chicago in implementing the growth mindset serve as a valuable reference for domestic medical institutions engaging in related research.
8.Er, Cr: YSGG laser ablation combined with photodynamic therapy in the treatment of gingival leukoplakia: two case reports and literature review
WANG Xiaoqing ; HAN Lin ; YU Xixi
Journal of Prevention and Treatment for Stomatological Diseases 2025;33(12):1078-1084
Objective:
To evaluate the clinical feasibility and potential for malignant transformation prevention of hyperkeratotic oral leukoplakia (OLK) treatment using erbium, chromium:yttrium-scandium-gallium-garnet laser (Er,Cr:YSGG) ablation combined with 5-aminolevulinic acid (ALA)-mediated photodynamic therapy (PDT), providing a reference for clinical practice.
Methods:
Two cases of histopathologically confirmed gingival leukoplakia were treated. Following Er,Cr:YSGG (wavelength: 2,780 nm) ablation of the hyperkeratotic layer, 20% ALA solution was topically applied for 3 hours, followed by irradiation with a 635 nm diode laser (energy density: 100 J/cm²). Follow-up assessments included lesion regression and exfoliative cytology DNA ploidy stability, supplemented by a systematic literature review on OLK treatment advancements.
Results:
Case 1: at 1-year follow-up, > 90% lesion regression was observed (residual: 2 mm circular white patch) without recurrence, with stable diploid DNA ploidy. Case 2: complete lesion resolution and no recurrence at 1 year, with stable diploid DNA ploidy. Literature review showed that pharmacological therapies ameliorate OLK symptoms but fail to halt malignant progression, while surgical interventions carry recurrence risks. PDT demonstrates unique advantages by selectively targeting dysplastic cells. However, uneven ALA penetration due to the keratin barrier limits efficacy. Compared to needling, diode laser, or CO₂ laser pretreatment, Er,Cr:YSGG leverages water absorption for precise, low-thermal keratin ablation, substantially enhancing tissue permeability and optimizing ALA diffusion, thereby improving PDT outcomes.
Conclusion
Er,Cr:YSGG ablation combined with PDT serves as an optimized regimen for hyperkeratotic OLK, offering a novel approach to mitigate OLK carcinogenesis.
9.Management Costs of Drugs for Clinical Trials in China
Xiaoqing NI ; Zhiwen REN ; Yujie SONG ; Qinan YIN ; Lin HE
Herald of Medicine 2025;44(6):1016-1020
According the Good Clinical Practice(GCP)and programmatic requirements,we analyze the management characteristics and the costs of drugs for clinical trials in different specialties from the drug management;The characteristics of the management of drugs for different specialties was summarize and the differential factors that may affect the management cost was explored,so as to provide theoretical support for the research institutions to utilize the resources in a rational and efficient way.This article provides a guarantee for the drug management with the aim of enhancing the quality and efficiency of clinical trials.
10.Expression and significance of RANK/RANKL/OPG signalling pathway in gerbil external ear canal cholesteatoma
Guanwen HE ; Xiaoqing LIN ; Xiuqin GUO ; Wenxian LU
Journal of Audiology and Speech Pathology 2025;33(6):575-579
Objective To investigate the expression and significance of RANK/RANKL/OPG signaling path-way in gerbil external auditory canal cholesteatoma(EACC).Methods Twenty-five mongolian long-clawed gerbils were divided into an experimental group(n=15)and a control group(n=10),and an EACC model was constructed by external auditory canal ligation method in the experimental group.Three months later,the external auditory ca-nal tissues of the control group and the experimental group(10 ears)were collected,and RT-qPCR and Western blot were performed to detect the expression levels of receptor activator of NF-κB(RANK),receptor activator of NF-κB ligand(RANKL),osteoprotegerin(OPG)mRNA and protein in the signaling pathway.Results Two ger-bils in the experimental group died during the modeling process,and cholesteatoma of the external auditory canal was formed in 10 ears 3 months after the operation,with a modeling success rate of 76.9%(10/13).Compared with the normal control group,there was no statistically significant difference in the expression of RANK mRNA in gerbil external auditory canal tissues(P=0.08).The expression of RANK protein was upregulated,the expression of RANKL mRNA and protein was upregulated,while the expression of OPG mRNA and protein was downregulat-ed,the ratio of RANKL/OPG was upregulated,with a statistically significant difference between the two groups(P<0.01).Conclusion The RANK/RANKL/OPG signaling system may play an important role in the formation of gerbil EACC and bone destruction.


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