1.Analysis of the relationship between stigma and mental resilience in adolescent patients
YANG Weiwei, RUI Zhongyang, LI Biao, CHEN Jing
Chinese Journal of School Health 2025;46(3):382-385
Objective:
To explore the relationship between stigma and mental resilience in adolescent epilepsy patients and associated factors, so as to provide reference for future psychological intervention in adolescent patients with epilepsy.
Methods:
A total of 295 adolescent patients with epilepsy from Wuhan Mental Health Center were enrolled as participants from February 2021 to October 2024. The stigma was evaluated by Kilifi Stigma Scale for Epilepsy (KSSE), and psychological resilience was evaluated by Connor-Davidson Resilience Scale (CD-RISC). Associated factors of stigma and psychological resilience in adolescent patients with epilepsy were analyzed by multivariate Logistic regression analysis.
Results:
In the adolescent patients with epilepsy, KSSE score was (10.90±4.13) points, with 138 cases (46.78%) at low level, 154 cases (52.20%) at moderate level and 3 cases (1.02%) at high level. CD-RISC score was (50.19±5.97) points, there were 170 cases (57.63%) at low level and 125 cases (42.37%) at high level. Multivariate Logistic regression analysis showed that disease course >3 years ( OR =2.22), family history of epilepsy ( OR = 4.18) , monthly family income ≤5 000 yuan ( OR =2.05), single parent family ( OR =2.46) and middle and high stigma level ( OR = 1.72) had a higher risk on low level of mental resilience ( P <0.05). The course of disease >3 years ( OR =2.20), family history of epilepsy ( OR =3.54), general seizure ( OR =2.12), monthly family income ≤5 000 yuan ( OR =2.70), low level of mental resilience ( OR =2.03) of adolescent epilepsy patients showed a high risk on moderate high level of stigma ( P <0.05).
Conclusions
The stigma level is higher, while psychological resilience is lower in adolescent patients with epilepsy. Clinically, targeted intervention should be implemented based on related factors such as stigma in addescent patients with epilepsy.
2.Research on The Construction and Application of Multiple Fluorescence Amplification System for Three Kinds of Stains
Yi-Fan BAI ; He-Miao ZHAO ; Jing CHEN ; Hong-Di LIU ; Rui-Qin YANG ; Chong WANG
Progress in Biochemistry and Biophysics 2025;52(4):982-994
ObjectiveA multiplex amplification system was constructed based on the capillary electrophoresis platform for simultaneous detection of saliva, semen, and vaginal secretions using tissue-specific RNA markers. The aim of this study is to identify the tissue origin of suspicious body fluid stains found at crime scenes and determine whether the body fluid stains at the crime scene are one or several types among saliva, semen, and vaginal secretions. MethodsThirty saliva samples, forty semen samples, and forty vaginal secretion samples (half from 2015 and half from 2024) were collected from healthy adult volunteers. Through primer designing, system formulation, and PCR condition optimization, a multiplex fluorescent amplification system was constructed. The specificity, sensitivity, and detection ability for mixed samples of this system were investigated, and it was tested using real crime scene materials. In the primer design stage, to reduce the requirements for RNA template quality, the amplification products were set within 80-300 bp. In the system formulation stage, dominant and subordinate primers were mainly considered. By reducing the concentration of dominant primers and increasing that of subordinate primers, a capillary electrophoresis spectrum with an appropriate peak height ratio was finally obtained. Additionally, gradient experiments were designed to adjust the concentrations of PCR reagents and PCR amplification conditions, and multiple versions of DNA amplification enzymes were optimized to achieve the best experimental results. ResultsThrough statistical analysis, there was no significant difference in the capillary electrophoresis of the 3 types of body fluid samples from the two years (2015 and 2024), demonstrating that the sample preservation method in this study can preserve samples for a relatively long time. The composite amplification system constructed in this study exhibited high specificity for all 3 types of body fluid, with no cross-reactions between the markers of each type of body fluid. The minimum detection thresholds for the 3 types of body fluid reached 0.002 9, 0.001 5, and 0.42 mg/L, respectively. This system also had a high degree of discrimination for mixed samples, especially for semen-saliva mixtures, where each body fluid marker could still be successfully detected when the concentration ratio of semen to saliva was 100:1. Meanwhile, in the two actual cases presented in this article, the application of this composite amplification system performed outstandingly. ConclusionThe composite amplification detection system constructed in this study can achieve the correct screening of saliva, semen, and vaginal secretions, overcoming the problems such as low specificity and sensitivity of marker tests and unbalanced RFU values of each marker in previous studies. The specificity and sensitivity meet the practical work requirements, and the operation is simple. It provides an analytical and identification method for body fluid stains in actual case and is applicable to the identification of the tissue origin of biological evidence at crime scenes involving sexual assault, indecent assault, and other criminal acts. In the future, more types of body fluid markers will be screened to expand the types of body fluids detected by the system, and body fluid-specific cSNP and cInDel genetic markers will be introduced to infer the sources (individuals and types) of mixed and complex stains more accurately.
3.Effects of Modified Guomin Decoction (加味过敏煎) on Traditional Chinese Medicine Syndromes and Quality of Life in Patients with Mild to Moderate Atopic Dermatitis of Heart Fire and Spleen Deficiency Pattern:A Randomized,Double-Blind,Placebo-Controlled Trial
Jing NIE ; Rui PANG ; Lingjiao QIAN ; Hua SU ; Yuanwen LI ; Xinyuan WANG ; Jingxiao WANG ; Yi YANG ; Yunong WANG ; Yue LI ; Panpan ZHANG
Journal of Traditional Chinese Medicine 2025;66(10):1031-1037
ObjectiveTo observe the clinical efficacy and safety of Modified Guomin Decoction (加味过敏煎, MGD) in patients with mild to moderate atopic dermatitis (AD) of the traditional Chinese medicine (TCM) pattern of heart fire and spleen deficiency, and to explore its possible mechanisms. MethodsIn this randomized, double-blind, placebo-controlled study, 72 patients with mild to moderate AD and the TCM pattern of heart fire and spleen deficiency were randomly divided into a treatment group and a control group, with 36 cases in each group. The treatment group received oral MGD granules combined with topical vitamin E emulsion, while the control group received oral placebo granules combined with topical vitamin E treatment. Both groups were treated twice daily for 4 weeks. Clinical efficacy, TCM syndrome scores, Visual Analogue Scale (VAS) for pruritus, Dermatology Life Quality Index (DLQI) scores, Scoring Atopic Dermatitis (SCORAD) and serum biomarkers, including interleukin-33 (IL-33), interleukin-1β (IL-1β), immunoglobulin E (IgE), and tumor necrosis factor-α (TNF-α) were compared before and after treatment. Safety indexes was also assessed. ResultsThe total clinical effective rates were 77.78% (28/36) in the treatment group and 38.89% (14/36) in the control group, with cure rates of 19.44% (7/36) and 2.78% (1/36), respectively. The treatment group showed significantly better clinical outcomes compared to the control group (P<0.05). The treatment group exhibited significant reductions in total TCM syndrome scores, including erythema, edema, papules, scaling, lichenification, pruritus, irritability, insomnia, abdominal distension, and fatigue scores, as well as reductions in VAS, DLQI, SCORAD, and serum IgE and IL-33 levels (P<0.05 or P<0.01). Compared to the control group, the treatment group had significantly better improvements in all indicators except for insomnia (P<0.05). No adverse events occurred in either group. ConclusionMGD is effective and safe in treating mild to moderate AD patients with heart fire and spleen deficiency pattern. It significantly alleviates pruritus, improves TCM syndromes and quality of life, and enhances clinical efficacy, possibly through modulation of immune responses.
4.Liang-Ge-San Decoction Ameliorates Acute Respiratory Distress Syndrome via Suppressing p38MAPK-NF-κ B Signaling Pathway.
Quan LI ; Juan CHEN ; Meng-Meng WANG ; Li-Ping CAO ; Wei ZHANG ; Zhi-Zhou YANG ; Yi REN ; Jing FENG ; Xiao-Qin HAN ; Shi-Nan NIE ; Zhao-Rui SUN
Chinese journal of integrative medicine 2025;31(7):613-623
OBJECTIVE:
To explore the potential effects and mechanisms of Liang-Ge-San (LGS) for the treatment of acute respiratory distress syndrome (ARDS) through network pharmacology analysis and to verify LGS activity through biological experiments.
METHODS:
The key ingredients of LGS and related targets were obtained from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform. ARDS-related targets were selected from GeneCards and DisGeNET databases. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses were performed using the Metascape Database. Molecular docking analysis was used to confirm the binding affinity of the core compounds with key therapeutic targets. Finally, the effects of LGS on key signaling pathways and biological processes were determined by in vitro and in vivo experiments.
RESULTS:
A total of LGS-related targets and 496 ARDS-related targets were obtained from the databases. Network pharmacological analysis suggested that LGS could treat ARDS based on the following information: LGS ingredients luteolin, wogonin, and baicalein may be potential candidate agents. Mitogen-activated protein kinase 14 (MAPK14), recombinant V-Rel reticuloendotheliosis viral oncogene homolog A (RELA), and tumor necrosis factor alpha (TNF-α) may be potential therapeutic targets. Reactive oxygen species metabolic process and the apoptotic signaling pathway were the main biological processes. The p38MAPK/NF-κ B signaling pathway might be the key signaling pathway activated by LGS against ARDS. Moreover, molecular docking demonstrated that luteolin, wogonin, and baicalein had a good binding affinity with MAPK14, RELA, and TNF α. In vitro experiments, LGS inhibited the expression and entry of p38 and p65 into the nucleation in human bronchial epithelial cells (HBE) cells induced by LPS, inhibited the inflammatory response and oxidative stress response, and inhibited HBE cell apoptosis (P<0.05 or P<0.01). In vivo experiments, LGS improved lung injury caused by ligation and puncture, reduced inflammatory responses, and inhibited the activation of p38MAPK and p65 (P<0.05 or P<0.01).
CONCLUSION
LGS could reduce reactive oxygen species and inflammatory cytokine production by inhibiting p38MAPK/NF-κ B signaling pathway, thus reducing apoptosis and attenuating ARDS.
Drugs, Chinese Herbal/pharmacology*
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Respiratory Distress Syndrome/enzymology*
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p38 Mitogen-Activated Protein Kinases/metabolism*
;
NF-kappa B/metabolism*
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Animals
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Signal Transduction/drug effects*
;
Molecular Docking Simulation
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Humans
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Male
;
Network Pharmacology
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Apoptosis/drug effects*
;
Mice
5.Cerebral endothelial 3-mercaptopyruvate sulfurtransferase improves ischemia-induced cognitive impairment via interacting with protein phosphatase 2A.
Li ZHU ; Yi HUANG ; Jing JIN ; Rongjun ZOU ; Rui ZUO ; Yong LUO ; Ziqing SONG ; Linfeng DAI ; Minyi ZHANG ; Qiuhe CHEN ; Yunting WANG ; Wei WANG ; Rongrong HE ; Yang CHEN
Acta Pharmaceutica Sinica B 2025;15(1):314-330
The catalytic activity of 3-mercaptopyruvate (3MP) sulfurtransferase (MPST) converts 3MP to hydrogen sulfide (H2S). However, the regulatory mechanisms governing MPST and its impact on the brain remain largely unexplored. Our study reveals the neuroprotective role of endothelial MPST-generated H2S, regulated by protein phosphatase 2A (PP2A). Bioinformatics analysis and RNA sequencing demonstrated that endothelial PP2A is associated with neurodegenerative disease pathways. Cerebral ischemic mice exhibited significant inactivation of endothelial PP2A, evidenced by the reduction of PP2Acα in the brain endothelium. Mice with endothelium-specific null PP2A (PP2AEC-cKO) exhibited neuronal loss, cognitive dysfunction, and long-term potentiation deficits. Postnatal inactivation of endothelial PP2A also contributes to cognitive dysfunction and neuronal loss. However, regaining endothelial PP2A activity by overexpressing Ppp2ca rescued neuronal dysfunction. Mechanistically, PP2A deficiency is intricately linked to the MPST-H2S signaling pathway. A robust reduction in endothelial MPST-dependent H2S production followed PP2A deficiency. Exogenous H2S treatment and AAV-mediated overexpression of MPST in brain endothelial cells significantly mitigated neuronal dysfunction in PP2AEC-cKO mice. Furthermore, PP2A deficiency promotes an increase in calcium influx and calpain2 phosphorylation, subsequently leading to MPST degradation. The PP2A activator (FTY720) and MPST activator (3MP sodium) both remarkably restored endothelial MPST-dependent H2S production, subsequently rescuing ischemia-induced neurological deficits. In conclusion, our study demonstrates that endothelial PP2A deficiency leads to MPST degradation by activating calpain2, thus damaging neuronal function.
6.Expert consensus on the diagnosis and treatment of cemental tear.
Ye LIANG ; Hongrui LIU ; Chengjia XIE ; Yang YU ; Jinlong SHAO ; Chunxu LV ; Wenyan KANG ; Fuhua YAN ; Yaping PAN ; Faming CHEN ; Yan XU ; Zuomin WANG ; Yao SUN ; Ang LI ; Lili CHEN ; Qingxian LUAN ; Chuanjiang ZHAO ; Zhengguo CAO ; Yi LIU ; Jiang SUN ; Zhongchen SONG ; Lei ZHAO ; Li LIN ; Peihui DING ; Weilian SUN ; Jun WANG ; Jiang LIN ; Guangxun ZHU ; Qi ZHANG ; Lijun LUO ; Jiayin DENG ; Yihuai PAN ; Jin ZHAO ; Aimei SONG ; Hongmei GUO ; Jin ZHANG ; Pingping CUI ; Song GE ; Rui ZHANG ; Xiuyun REN ; Shengbin HUANG ; Xi WEI ; Lihong QIU ; Jing DENG ; Keqing PAN ; Dandan MA ; Hongyu ZHAO ; Dong CHEN ; Liangjun ZHONG ; Gang DING ; Wu CHEN ; Quanchen XU ; Xiaoyu SUN ; Lingqian DU ; Ling LI ; Yijia WANG ; Xiaoyuan LI ; Qiang CHEN ; Hui WANG ; Zheng ZHANG ; Mengmeng LIU ; Chengfei ZHANG ; Xuedong ZHOU ; Shaohua GE
International Journal of Oral Science 2025;17(1):61-61
Cemental tear is a rare and indetectable condition unless obvious clinical signs present with the involvement of surrounding periodontal and periapical tissues. Due to its clinical manifestations similar to common dental issues, such as vertical root fracture, primary endodontic diseases, and periodontal diseases, as well as the low awareness of cemental tear for clinicians, misdiagnosis often occurs. The critical principle for cemental tear treatment is to remove torn fragments, and overlooking fragments leads to futile therapy, which could deteriorate the conditions of the affected teeth. Therefore, accurate diagnosis and subsequent appropriate interventions are vital for managing cemental tear. Novel diagnostic tools, including cone-beam computed tomography (CBCT), microscopes, and enamel matrix derivatives, have improved early detection and management, enhancing tooth retention. The implementation of standardized diagnostic criteria and treatment protocols, combined with improved clinical awareness among dental professionals, serves to mitigate risks of diagnostic errors and suboptimal therapeutic interventions. This expert consensus reviewed the epidemiology, pathogenesis, potential predisposing factors, clinical manifestations, diagnosis, differential diagnosis, treatment, and prognosis of cemental tear, aiming to provide a clinical guideline and facilitate clinicians to have a better understanding of cemental tear.
Humans
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Dental Cementum/injuries*
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Consensus
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Diagnosis, Differential
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Cone-Beam Computed Tomography
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Tooth Fractures/therapy*
7.Effects of Laparoscopic Sleeve Gastrectomy on Cardiac Structure and Function in Obese Patients With Heart Failure.
Xiao-Yan JIA ; Rui-Jia LIAN ; Bao-Dong MA ; Yang-Xi HU ; Qin-Jun CHU ; Hai-Yun JING ; Zhi-Qiang KANG ; Jian-Ping YE ; Xi-Wen MA
Acta Academiae Medicinae Sinicae 2025;47(2):226-236
Objective To investigate the effects of laparoscopic sleeve gastrectomy(LSG)on the cardiac structure and function in obese patients with heart failure(HF)and compare the efficacy of LSG across obese patients with different HF types.Methods This study included 33 obese patients with HF who underwent LSG.The clinical indicators were compared between before operation and 12 months after operation.Repeated measures analysis of variance was employed to evaluate the changes in echocardiographic parameters before operation and 3,6,and 12 months after operation.Patients were allocated into a HF with preserved ejection fraction group(n=17),a HF with mildly reduced ejection fraction group(n=5)and a HF with reduced ejection fraction(HFrEF)group(n=11)based on left ventricular ejection fraction(LVEF)before operation for subgroup analyses of the effects of LSG on the cardiac structure and function of obese patients with HF.The paired samples t-test was conducted to assess the degree of cardiac structural and functional alterations after LSG.Results The 33 patients included 69.7% males,with an average age of(35.3±9.9)years,and a body mass index(BMI)of(51.2±9.8)kg/m2.The median follow-up was 9.0(5.0,13.3)months.Compared with the preoperative values,the postoperative BMI(P=0.002),body surface area(BSA)(P=0.009),waist circumference(P=0.010),hip circumference(P=0.031),body fat content(P=0.007),and percentage of patients with cardiac function grades Ⅲ-IV(P<0.001)decreased.At the 12-month follow-up left atrial diameter(P=0.006),right atrial long-axis inner diameter(RAD1)(P<0.001),right atrial short-axis inner diameter(RAD2)(P<0.001),right ventricular inner diameter(P=0.002),interventricular septal thickness at end-diastolic(P=0.002),and left ventricular end-diastolic volumes(P=0.004)and left ventricular end-systolic volumes(P=0.003) all significantly reduced compared with preoperative values.Additionally,left ventricular fractional shortening and LVEF improved(both P<0.001).Subgroup analyses revealed that cardiac structural parameters significantly decreased in the HF with preserved ejection fraction,HF with mildly reduced ejection fraction,and HFrEF subgroups compared with preoperative values.Notably,the HFrEF group demonstrated the best performance in terms of left atrial diameter(P=0.003),left ventricular inner diameter at end-diastole(P=0.008),RAD1(P<0.001),RAD2(P=0.004),right ventricular inner diameter(P=0.019),left ventricular end-diastolic volume(P=0.004)and left ventricular end-systolic volume(P=0.001),cardiac output(P=0.006),tricuspid regurgitation velocity(P=0.002),and pulmonary artery systolic pressure(P=0.001) compared to preoperatively.Postoperative left ventricular fractional shortening(P<0.001,P=0.003,P<0.001)and LVEF(P<0.001,P=0.011,P=0.001)became higher in all the three subgroups than the preoperative values.Conclusions LSG decreased the body weight,BMI,and BSA,improved the cardiac function grade,reversed the enlargement of the left atrium and left ventricle,reduced the right atrium and right ventricle,and enhanced the left ventricular systolic function.It was effective across obese patients with different HF types.Particularly,LSG demonstrates the best performance in improving the structures of both atria and ventricles in obese patients with HFrEF.
Humans
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Male
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Female
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Gastrectomy/methods*
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Heart Failure/complications*
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Adult
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Obesity/physiopathology*
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Laparoscopy
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Middle Aged
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Heart/physiopathology*
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Stroke Volume
8.Observation on the Effect of Modified Banxia Xiexin Decoction on Inflammatory Factors in Patients with Polycystic Ovary Syndrome of Stomach Heat and Spleen Deficiency Type Through the Regulatory Mechanism of Intestinal Flora
Xiaoyan XIA ; Rui ZHAO ; Yang CHEN ; Xiaojuan ZHANG ; Jing WANG
Journal of Guangzhou University of Traditional Chinese Medicine 2025;42(2):367-373
Objective To observe the effect of modified Banxia Xiexin Decoction on inflammatory factors in patients with polycystic ovary syndrome(PCOS)of stomach heat and spleen deficiency type through the regulatory mechanism of intestinal flora.Methods A total of 86 patients with PCOS of stomach heat and spleen deficiency type were randomly divided into control group(45 cases)and observation group(41 cases).The control group was treated with conventional western medicine,and the observation group was treated with modified Banxia Xiexin Decoction on the basis of treatment for the control group.One menstrual cycle constituted a course of treatment,and the treatment lasted for three continuous menstrual cycles.The two groups were observed in the changes of traditional Chinese medicine(TCM)syndrome score,endometrial thickness,serum inflammatory factors of tumor necrosis factor α(TNF-α),C-reactive protein(CRP)and interleukin-6(IL-6),sex hormone levels of luteinizing hormone(LH),estradiol(E2),follicle stimulating hormone(FSH)and LH/FSH,as well as the intestinal flora before and after treatment.The clinical efficacy and pregnancy rate of the two groups were compared after treatment.Results(1)After 3 menstrual cycles of treatment,the total effective rate of the observation group was 87.80%(36/41),and that of the control group was 68.89%(31/45).The intergroup comparison(tested by chi-square test)showed that the clinical efficacy of the observation group was significantly superior to that of the control group(P<0.05).(2)After treatment,the scores of TCM syndromes in the two groups were decreased when compared with those before treatment(P<0.05),and the decrease in the observation group was more significant than that in the control group(P<0.01).(3)After treatment,the endometrial thickness in the two groups was increased when compared with that before treatment(P<0.05),and the increase in the observation group was superior to that in the control group(P<0.01).(4)The pregnancy rate of the observation group was 92.68%(38/41),which was significantly higher than 73.33%(33/45)of the control group,and the difference was statistically significant(P<0.05).(5)After treatment,the levels of serum E2,LH and LH/FSH in the two groups were decreased when compared with those before treatment(P<0.05),but there was no significant change in the level of serum FSH before and after treatment(P>0.05).The comparison between the two groups showed that the decrease of serum E2,LH and LH/FSH levels in the observation group was significantly superior to that in the control group(P<0.01).(6)After tieatment,the levels of serum CRP,IL-6,TNF-α in patients of the two groups were decreased compared with those before treatment(P<0.05),and the decrease in the observation group was superior to that in the control group(P<0.01).(7)After treatment,the levels of Bifidobacteria and Lactobacilli in the intestinal flora of the two groups were higher than those before treatment(P<0.05),and the levels of Enterococcus faecalis and Bacteroides were lower than those before treatment(P<0.05),while the levels of Enterobacter did not change significantly before and after treatment(P>0.05).The comparison between the two groups showed that the increase of the levels of Bifidobacteria and Lactobacilli and the decrease of the levels of Enterococcus faecalis and Bacteroides in the observation group were significantly superior to those in the control group(P<0.05 or P<0.01).Conclusion Modified Banxia Xiexin Decoction has a significant clinical effect in the treatment of PCOS of stomach heat and spleen deficiency type.The decoction is effective on improving the clinical symptoms and inflammatory factor levels of patients by regulating intestinal flora.
9.Roles and mechanisms of TRIM family proteins in the regulation of bone metabolism.
Jing YANG ; Rui-Qi HUANG ; Ke XU ; Mian-Mian YANG ; Xue-Jie YI ; Bo CHANG ; Ting-Ting YAO
Acta Physiologica Sinica 2025;77(3):472-482
Tripartite motif-containing (TRIM) family proteins are crucial E3 ubiquitin ligases that have garnered significant attention for their regulatory roles in bone metabolism in recent years. This article reviews the function and regulatory mechanisms of TRIM family proteins in bone metabolism, focusing on their dual roles in bone formation and resorption. It also provides a detailed analysis of signaling pathways and molecular mechanisms by which TRIM family members regulate the activities of osteoblasts and osteoclasts. Research findings suggest that modulating the expression or activity of TRIM family proteins could be beneficial for treating bone diseases such as osteoporosis. This review highlights the molecular mechanisms of TRIM family members in bone physiology and pathology, aiming to provide theoretical basis and scientific guidance for developing novel therapeutic strategies for bone diseases.
Humans
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Ubiquitin-Protein Ligases/physiology*
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Bone and Bones/metabolism*
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Animals
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Tripartite Motif Proteins/physiology*
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Osteoclasts/metabolism*
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Osteoblasts/metabolism*
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Signal Transduction/physiology*
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Osteogenesis/physiology*
10.A convenient research strategy for functional verification of epigenetic regulators during spermatogenesis.
Shan LI ; Ying YUAN ; Ke-Yu ZHANG ; Yi-Dan GUO ; Lu-Tong WANG ; Xiao-Yuan ZHANG ; Shu ZHANG ; Qi YAN ; Rong ZHANG ; Jie CHEN ; Feng-Tang YANG ; Jing-Rui LI
Asian Journal of Andrology 2025;27(2):261-267
Spermatogenesis is a fundamental process that requires a tightly controlled epigenetic event in spermatogonial stem cells (SSCs). The mechanisms underlying the transition from SSCs to sperm are largely unknown. Most studies utilize gene knockout mice to explain the mechanisms. However, the production of genetically engineered mice is costly and time-consuming. In this study, we presented a convenient research strategy using an RNA interference (RNAi) and testicular transplantation approach. Histone H3 lysine 9 (H3K9) methylation was dynamically regulated during spermatogenesis. As Jumonji domain-containing protein 1A (JMJD1A) and Jumonji domain-containing protein 2C (JMJD2C) demethylases catalyze histone H3 lysine 9 dimethylation (H3K9me2), we firstly analyzed the expression profile of the two demethylases and then investigated their function. Using the convenient research strategy, we showed that normal spermatogenesis is disrupted due to the downregulated expression of both demethylases. These results suggest that this strategy might be a simple and alternative approach for analyzing spermatogenesis relative to the gene knockout mice strategy.
Spermatogenesis/physiology*
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Animals
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Male
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Mice
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Epigenesis, Genetic
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Jumonji Domain-Containing Histone Demethylases/metabolism*
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Histones/metabolism*
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RNA Interference
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Testis/metabolism*
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Methylation
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Mice, Knockout
;
Histone Demethylases


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