1.The deception risks and ethical regulation of social robots in medical companionship application
Wei LI ; Jiarui WANG ; Xinfang CHEN
Chinese Medical Ethics 2025;38(9):1177-1183
Social robots play an important role in the field of medical companionship, providing services such as companion communication, drug monitoring, and rehabilitation guidance for the elderly and other subjects. However, social robots also pose the risk of deceiving medical users. Although certain forms of social robots’ deception can be used for therapeutic purposes, unethical deception can have adverse consequences for patients, doctors, and even society. These risks include causing patients to develop attachment disorders, violating their privacy, endangering their health, and even undermining the credibility of the healthcare system. Faced with the deception problem of social robots, starting from relational theory, medical artificial intelligence developers can conduct ethical regulation from the following two paths. First, social robots should be ethically programmed, including embedding programs for limiting benevolent lies, implementing informed consent principles, and ensuring information accuracy. Second, the deceptive behaviors of social robots should be controlled, requiring developers to take full-process supervision responsibility, design medical social robots that can supervise each other, and participate in formulating quality standards and evidence mechanisms for deception issues.
2.Association of sleep and screen time with coexistence of screening myopia and depressive symptom among primary and secondary school students
ZHAI Shuang, MIAO Shenghao, SHI Mengxing, ZHANG Yang, QI Jiarui, LI Jiaan, CHENG Pei, ZHANG Juan
Chinese Journal of School Health 2025;46(11):1640-1644
Objective:
To explore the prevalence of screening myopia and depressive symptom among primary and secondary school students in Xuzhou, and to explore the association of sleep and screen time on the coexistence of screening myopia and depressive symptom, so as to provide scientific references for developing intervention strategies to address the development of myopia and promote mental health in children and adolescents.
Methods:
From September to October 2024, a stratified cluster random sampling method was used to select 6 605 students in grade 4 to 12 in 2 urban and 2 suburban districts in Xuzhou. The students health condition and influencing factors questionnaire were used to assess students basic information, sleep time, and screen time. The Center for Epidemiological Studies Depression Scale (CES-D) was used to assess primary and secondary school students depressive symptom.Unaided distance visual acuity examination was conducted, and refractive assessment was performed using an automated refractometer without cycloplegic agents. The Chi-square test and multiple Logistic regression analysis were used to evaluate the association of sleep and screen time with the coexistence of screening myopia and depressive symptom.
Results:
The detection rates of screening myopia, depressive symptom, and screening myopia and depressive symptoms co morbidity among primary and secondary school students in Xuzhou were 60.35%, 4.45% and 18.61% respectively. Results from the multinomial Logistic regression analysis, using the healthy group as the reference and after adjusting for confounding factors, showed that students with insufficient sleep duration were more likely to have depressive symptom ( OR=1.57, 95%CI =1.08-2.27) and the coexistence of screening myopia and depressive symptom ( OR=1.85, 95%CI =1.45-2.36). Students with daily screen time≥2 h were more likely to have depressive symptom only ( OR=1.41, 95%CI =1.04-1.93) and the coexistence of screening myopia and depressive symptom ( OR=1.31, 95%CI =1.06-1.61). Further stratified analysis based on sufficient and insufficient sleep duration revealed that only in the insufficient sleep duration group, students with daily screen time≥2 h had an increased risk of depressive symptom only ( OR=1.49, 95%CI =1.07-2.07) and the coexistence of screening positive myopia and depressive symptom ( OR=1.40, 95%CI =1.11- 1.77 ) (all P <0.05).
Conclusions
Primary and secondary school students with insufficient sleep duration and daily screen time≥2 h have higher risks of depressive symptoms and the coexistence of screening myopia and depressive symptoms. It is recommended to ensure adequate sleep duration and limit screen time for children and adolescents.
3.Effect of liriodendrin on intestinal flora and ferroptosis pathway in septic rats with acute kidney injury.
Chan GUO ; Lingzhi CUI ; Min ZHOU ; Yuzhen ZHUO ; Lei YANG ; Jiarui LI
Chinese Critical Care Medicine 2025;37(8):728-734
OBJECTIVE:
To investigate the effects of liriodendrin on the intestinal flora and the ferroptosis signaling pathway in renal tissue of rats with sepsis-induced acute kidney injury (AKI).
METHODS:
Thirty male Sprague-Dawley (SD) rats were randomly divided into sham operation group (Sham group), sepsis model induced by cecal ligation and puncture group (CLP group), and liriodendrin intervention group (CLP+LIR group), with 10 rats in each group. The CLP+LIR group was given 0.2 mL of 100 mg/kg liriodendrin by gavage 2 hours before modeling; Sham group and CLP group were given the same volume of normal saline by gavage. The samples were collected after anesthesia 24 hours after modeling. The pathological changes of renal tissue were observed by hematoxylin-eosin (HE) staining. The levels of inflammatory factors such as tumor necrosis factor-α (TNF-α), interleukins (IL-1β, IL-6) were detected by enzyme linked immunosorbent assay (ELISA). The levels of renal function indicators such as creatinine (Cr), and urea nitrogen (UREA) in peripheral blood, and the content of malondialdehyde (MDA) and Fe2+ in renal tissue were detected. Western blotting was used to detect the expressions of nuclear factor E2-related factor 2 (Nrf2), glutathione peroxidase 4 (GPX4) and heme oxygenase-1 (HO-1) in renal tissues. The changes of intestinal flora were detected by 16S rDNA high-throughput sequencing.
RESULTS:
Compared with the Sham group, the CLP group showed significantly enlarged glomeruli, noticeable renal interstitial edema, disorganized kidney tissue, and significantly increased pathological scores. The contents of TNF-α, IL-1β, IL-6, Cr, and UREA in peripheral blood and the levels of MDA and Fe2+ in renal tissue were significantly increased. The protein expressions of Nrf2, GPX4, and HO-1 in renal tissue were significantly down-regulated. The species richness of intestinal flora decreased significantly, and the relative abundances of pathogenic bacteria such as Morganella, Citrobacter, Proteus, Klebsiella, Shigella, Aggregatibacter, and Enterococcus increased significantly, while the relative abundances of beneficial bacteria such as Butyricimonas, Veillonella, Prevotella, Lactobacillus, Bifidobacterium, and Ruminococcus decreased significantly. Compared with the CLP group, CLP+LIR group could significantly reduce the pathological damage of renal tissue, the pathological score significantly decreased (1.80±0.84 vs. 4.20±1.30, P < 0.05), and improve the composition of intestinal flora, reduce the relative abundances of pathogenic bacteria such as Proteus, Klebsiella, Shigella, Aggregatibacter, and Enterococcus, and significantly increase the relative abundances of Lactobacillus, Bifidobacterium, and Ruminococcus, significantly reduce the contents of TNF-α, IL-1β, IL-6, Cr, and UREA in peripheral blood and the levels of MDA and Fe2+ in renal tissue [blood TNF-α (ng/L): 191.31±7.23 vs. 254.90±47.89, blood IL-1β (ng/L): 11.15±4.04 vs. 23.06±1.67, blood IL-6 (ng/L): 163.20±17.83 vs. 267.69±20.92, blood Cr (μmol/L): 24.14±4.25 vs. 41.17±5.43, blood UREA (mmol/L): 4.59±0.90 vs. 8.01±1.07, renal MDA (μmol/g): 9.67±0.46 vs. 16.05±0.88, renal Fe2+ (mg/g): 0.71±0.07 vs. 0.93±0.04, all P < 0.05], and increase the protein expressions of Nrf2, GPX4, and HO-1 (Nrf2/GAPDH: 1.21±0.01 vs. 0.39±0.01, GPX4/GAPDH: 0.74±0.04 vs. 0.48±0.04, HO-1/GAPDH: 0.91±0.01 vs. 0.41±0.02, all P < 0.05).
CONCLUSIONS
Liriodendrin has an obvious protective effect on sepsis-induced AKI. The mechanism may involve regulating the intestinal flora, increasing the activation of the Nrf2/HO-1/GPX4 signaling pathway in renal tissue, and reducing ferroptosis.
Animals
;
Acute Kidney Injury/microbiology*
;
Rats, Sprague-Dawley
;
Sepsis/complications*
;
Male
;
Ferroptosis/drug effects*
;
Gastrointestinal Microbiome/drug effects*
;
Rats
;
Signal Transduction
;
Kidney/metabolism*
;
Tumor Necrosis Factor-alpha/metabolism*
4.Effect of miR-34a-5p on hippocampal neuron apoptosis in rats with temporal lobe epilepsy and its mechanism
Jiarui LI ; Zhenlin YANG ; Fan GAO ; Jingjing GUO ; Jinzi LI
Journal of Jilin University(Medicine Edition) 2025;51(4):939-947
Objective:To discuss the effect of microRNA-34a-5p(miR-34a-5p)on the neuron apoptosis in hippocampus tissue of the rats with temporal lobe epilepsy,and to clarify its mechanism.Methods:Fifty-two male SD rats were randomly divided into control group,model group,miR-34a-5p inhibitor group,and inhibitor negative control group,and there were 13 rats in each group.The PONEMAH 6.X experimental animal telemetry platform was used to record the electroencephalogram(EEG)of the rats in various groups;real-time fluorescence quantitative PCR(RT-qPCR)was used to detect the expression levels of miR-34a-5p in hippocampus tissue of the rats in various groups;HE staining was used to observe the morphology of hippocampus tissue of the rats in various groups;TUNEL method was used to detect the apoptotic rates of neurons in hippocampus tissue of the rats in various groups;immunohistochemistry method was used to determine the positive expression rates of CDK6,p-Rb,and E2F1 proteins in hippocampus tissue of the rats in various group;Western blotting method was used to detect the expression levels of cyclin-dependent protein kinase 6(CDK6),phosphorylated retinoblastoma protein(p-Rb),and E2F transcription factor 1(E2F1)proteins in hippocampus tissue of the rats in various groups.Results:No abnormalities were observed in the rats in control group;the rats in model group,miR-34a-5p inhibitor group,and inhibitor negative control group exhibited varying degrees of drooling,trembling,bloody tears,staring,chewing tremors,followed by nodding and blinking,and finally forelimb convulsions,standing upright,and falling.Compared with control group,the total duration of epileptic seizures of the rats in model group was significantly prolonged(P<0.01);compared with model group,the total duration of epileptic seizures of the rats in miR-34a-5p inhibitor group was shortened(P<0.01);compared with miR-34a-5p inhibitor group,the total duration of epileptic seizures of the rats in inhibitor negative control group was prolonged(P<0.01).The RT-qPCR results showed that compared with control group,the expression level of miR-34a-5p in hippocampus tissue of the rats in model group was increased(P<0.01);compared with model group,the expression level of miR-34a-5p in hippocampus tissue of the rats in miR-34a-5p inhibitor group was increased(P<0.05);compared with miR-34a-5p inhibitor group,the expression level of miR-34a-5p in hippocampus tissue of the rats in inhibitor negative control group was increased(P<0.01).The HE staining results showed that compared with control group,the cell arrangement in model group was disordered;compared with model group,the cell arrangement in miR-34a-5p inhibitor group was orderly;compared with miR-34a-5p inhibitor group,the cell morphology in inhibitor negative control group was irregular.The TUNEL staining results showed that compared with control group,the apoptotic rate of neurons in CA1 region of hippocampus tissue of the rats in model group was increased(P<0.01);compared with model group,the apoptotic rate of neurons in CA1 region of hippocampus tissue of the rats in miR-34a-5p inhibitor group was decreased(P<0.05);compared with miR-34a-5p inhibitor group,the apoptotic rate of neurons in CA1 region of hippocampus tissue of the rats in inhibitor negative control group was increased(P<0.05).The immunohistochemistry results showed that compared with control group,the positive expression rates of CDK6,p-Rb and E2F1 proteins in hippocampus tissue of the rats model group were increased(P<0.05 or P<0.01);compared with model group,the positive expression rates of CDK6,p-Rb and E2F1 proteins in hippocampus tissue of the rats in miR-34a-5p inhibitor group were decreased(P<0.05);compared with miR-34a-5p inhibitor group,the positive expression rates of CDK6,p-Rb and E2F1 proteins in hippocampus tissue of the rats in inhibitor negative group were increased(P<0.05 or P<0.01).The Western blotting results showed that compared with control group,the expression levels of CDK6,p-Rb,and E2F1 proteins in hippocampus tissue of the rats in model group were increased(P<0.01);compared with model group,the expression levels of CDK6,p-Rb,and E2F1 proteins in hippocampus tissue of the rats in miR-34a-5p inhibitor group were decreased(P<0.05 or P<0.01);compared with miR-34a-5p antagomir group,the expression levels of CDK6,p-Rb,and E2F1 proteins in hippocampus tissue of the rats in inhibitor negative control group were increased(P<0.05 or P<0.01).Conclusion:The expression of miR-34a-5p is upregulated in the hippocampal tissue of temporal lobe epilepsy rats,and hippocampal neuron apoptosis is increased.Inhibition of miR-34a-5p expression can reduce the hippocampal neuron apoptotic rate,and its mechanism may be related to the regulation of CDK6,p-Rb,and E2F1 protein expressions in the hippocampus tissue by miR-34a-5p.
5.Effect of Dachaihu decoction on dextran sodium sulfate-induced ulcerative colitis and liver injury and its association with gut microbiota modulation in mice
Qingqing XIANG ; Feng LAI ; Hong XIAO ; Zhengjia PU ; Lingli MA ; Xiangyun LIU ; Shihui LI ; Shengmin MAO ; Jiarui FAN ; Yuchen LI ; Ankang LI ; Yang WANG ; Qunhua BAI
Journal of Chongqing Medical University 2025;50(8):1084-1095
Objective:To investigate the preventive and therapeutic effects and mechanisms of Dachaihu decoction(DCD)on dextran sodium sulfate(DSS)-induced ulcerative colitis(UC)and liver injury in mice,as well as the association between DCD benefits and gut microbiota modulation.Methods:Mice were treated with DCD(20.10 and 10.05 g/kg)for 2 weeks,with free access to drinking water containing 3%DSS in the second week to induce UC.Histopathological examination,RT-qPCR and 16S rRNA sequencing were used to investigate the effect of DCD on UC mice.Results:DCD pretreatment significantly alleviated weight loss,bloody diarrhea with mucus,histopathological abnormalities of the colon,and colon shortening in mice with DSS-induced UC.In addition,DCD pretreat-ment significantly upregulated the levels of Occludin,ZO-1,and MUC-2 in the colon and protected the intestinal barrier of mice.DCD pretreatment also alleviated inflammatory cell infiltration in the colon and the liver and significantly reduced the expression levels of the proinflammatory factors such as IL-1β,IL-6,TNF-α,iNOS,COX-2,and NLRP3,thereby exerting a protective effect against UC and liver injury.It should be noted that DCD corrected gut micro-biota imbalance in UC mice by enriching probiotic bacteria such as Lactobacillus and Bifidobacterium and reducing harmful bacteria such as Norank_f_Desulfovibrionaceae and Escherichia-Shigella.Conclusion:DCD can alleviate DSS-induced UC and exert a liver-protecting effect by protecting intestinal barrier,inhibiting inflam-mation,and regulating gut microbiota.
6.Establishment of a nomogram prediction model for severe postpartum hemorrhage in subsequent pregnancies after multiple cesarean sections
Xia DU ; Qi WU ; Jiarui LI ; Cheng CHEN
Journal of Chongqing Medical University 2025;50(10):1426-1433
Objective:To establish a nomogram prediction model for severe postpartum hemorrhage in subsequent pregnancies after multiple cesarean sections.Methods:A retrospective analysis was performed for the clinical and imaging data of 395 pregnant and par-turient women with multiple cesarean section who were hospitalized for delivery from January 2021 to December 2023.Univariate analysis and multivariate logistic regression analysis were used to investigate the risk factors for severe postpartum hemorrhage in sub-sequent pregnancies after multiple cesarean sections.A nomogram prediction model was established and validated in terms of specific-ity,accuracy,and clinical decision-making utility.Results:Among the 395 patients,131 experienced severe postpartum hemorrhage,accounting for 33.16%.The univariate analysis showed that times of pregnancy,times of vaginal delivery,grade of hospitals for previ-ous surgeries,number of prenatal checkups during this time of pregnancy,pregnancy-induced hypertension,gestational diabetes,pla-centa previa,location of placenta,association between placenta and uterus,and whether emergency cesarean section was performed were risk factors for severe postpartum hemorrhage in subsequent pregnancies after multiple cesarean sections(P<0.05).The multivari-ate logistic regression analysis showed that times of pregnancy,number of prenatal checkups,gestational diabetes,position of placenta,and whether emergency cesarean section was performed were independent risk factors for severe postpartum hemorrhage in subsequent pregnancies after multiple cesarean sections(P<0.05).A nomogram prediction model was established based on these independent risk factors,which had an area under the ROC curve of 0.783(95%CI=0.732-0.834),and there was a good consistency between the pre-dicted probability curve and the observed frequency curve.When the probability of severe postpartum hemorrhage predicted by the nomogram model was within the range of 0.15-1.0,the model has a good value of clinical decision-making.Conclusion:The incidence rate of severe postpartum hemorrhage in this population can be re-duced by attending regular prenatal checkups,controlling preg-nancy complications,and reducing the rate of emergency cesarean section and the number of deliveries.The nomogram prediction model established in this study has certain clinical application prospects.
7.Clinical diagnosis and treatment of relapsing polychondritis in children with airway involvement.
Ying WANG ; Zhibo XIE ; Jiarui CHEN ; Xiaoyan LI
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(2):128-132
Objective:Explore the clinical diagnosis and treatment strategies of recurrent multiple chondritis in children with airway involvement as the main cause. Methods:From June 2021 to May 2023, five children with relapsing polychondritis were admitted to our department, all of whom met the Damiani criteria. Tracheotomy was performed in all five patients. Endoscopy indicated subglottic stenosis, with one case classified as grade Ⅲ and four cases as grade Ⅳ according to the Myer-Cotton classification. Enhanced CT scans of the head and neck showed fixed lumen narrowing and stenosis, including thickening of the soft tissue in the laryngeal cavity and partial absorption of the laryngotracheal cartilage anterior wall. In one patient, tracheal wall thickening and deformation with stenosis and calcification involved the posterior tracheal wall. One patient underwent "laryngeal tracheal reconstruction with hyoid graft, T-tube implantation, and bioabsorbable corticosteroid-eluting stent implantation", while three patients underwent "balloon dilatation, T-tube implantation, and bioabsorbable corticosteroid-eluting stent implantation" . Follow-up was performed every two months after the initial surgery, and three bioabsorbable corticosteroid-eluting stents were placed on the upper left, upper right, and lower T-tube, respectively, during this time. The entire follow-up period was six months. Results:All the 5 cases were in the outpatient department, of which 1 case had been extubation, 3 cases were still in the outpatient follow-up, and the remaining 1 case was still being treated in the rheumatology and immunology department due to poor control of the primary disease. Conclusion:In relapsing polychondritis children with airway involvement, tracheotomy could be used to quickly improve the symptoms of dyspnea in the disease progression. In the stable stage of the disease, the surgical method of 'Balloon dilatation + T-tube implantation + Bioabsorbable corticosteroid-eluting stents implantation' was adopted to reduce the secondary injury caused by surgical trauma as much as possible and improve the survival and quality of life of the children.
Humans
;
Polychondritis, Relapsing/surgery*
;
Child
;
Male
;
Female
;
Tracheotomy
;
Laryngostenosis
;
Child, Preschool
;
Trachea/surgery*
;
Adolescent
;
Stents
8.Clinical analysis of primary cervical neuroblastoma in children.
Chenling SHEN ; Jiarui CHEN ; Ying WANG ; Xiaoyan LI
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(4):344-350
Objective:To explore the clinical manifestations, diagnosis, treatment, pathological types and prognosis of primary cervical neuroblastoma in children. Methods:The clinical data of 11 children with primary cervical neuroblastoma admitted to the Department of Otolaryngology and Head and Neck Surgery at Shanghai Children's Hospital from April 2015 to April 2022 were retrospectively analyzed. The clinical characteristics, imaging findings, pathological types, treatment methods, and outcomes of these 11 patients were examined in conjunction with a review of the literature. Results:The cohort of 11 neuroblastoma patients ranged in age from 28 days to 88 months (median age: 24 months), including 3 males and 8 females. Among the 11 patients, 4 had tumors located in the carotid sheath area, 4 in the cervical space, and 3 in the parapharyngeal and retropharyngeal spaces. The clinical manifestations primarily included painless cervical masses and laryngeal stridor. There were 3 cases of primary cervical tumors with cervical lymph node metastasis and 1 case with bone marrow metastasis. Pathological findings revealed neuroblastoma in 8 cases and ganglionic neuroblastoma in 3 cases. In this group, 7 patients underwent surgery combined with chemotherapy, 2 patients received surgery combined with chemoradiotherapy, and 2 patients underwent surgery alone. Surgical resection was performed via a cervical approach in 7 cases, while 3 cases were treated using a transoral endoscopic approach. Additionally, one patient underwent a transoral endoscopic approach initially and a cervical approach subsequently. All patients completed their treatment and were followed up regularly, with follow-up durations ranging from 6 to 79 months (median: 34 months). Nine patients achieved complete remission, 2 patients achieved partial remission, and none experienced disease progression. Conclusion:Primary cervical neuroblastoma exhibits a high degree of heterogeneity and presents at a younger age, primarily with cervical masses. Compared to external approaches, endoscopy-assisted transoral resection of parapharyngeal tumors offers advantages such as reduced damage to surrounding tissue and no visible neck scars, providing a new method for clinical treatment. Regular follow-up is essential for children with neuroblastoma, along with the establishment of specific disease management protocols and comprehensive care to improve survival quality.
Humans
;
Female
;
Male
;
Neuroblastoma/surgery*
;
Child, Preschool
;
Infant
;
Retrospective Studies
;
Child
;
Head and Neck Neoplasms/pathology*
;
Prognosis
9.Analysis of MRI and clinical characteristics for pediatric head, neck, and facial lymphatic malformations.
Jiafei CHEN ; Wei CHEN ; Shujun KE ; Ying WANG ; Jiarui CHEN ; Xiaoyan LI
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(7):646-651
Objective:This aims to investigate the diagnostic and evaluative value of MRI for lymphatic malformations in the head, neck, and facial regions of children. Methods:A retrospective analysis was conducted on the MRI imaging data of 31 cases of head, neck, and facial lymphatic malformations in children admitted to the Department of Otolaryngology, Head and Neck Surgery, Children's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, from January 2022 to January 2024. Results:The MRI images of this group of cases primarily displayed irregular morphology(80.6%, 25/31), thin-walled cysts(80.6%, 25/31), and compression of surrounding tissues. The boundaries were clear(100%, 31/31), with characteristics of invasive and drill-like growth(93.5%). The cyst walls or internal septa exhibited high signal intensity on T1WI, low signal intensity on T2WI, and mild to moderate enhancement(100%). The contents of the cysts showed low signal intensity on T1WI, high signal intensity on T2WI, and no enhancement(35.5%, 11/31). Mixed signals with varying degrees of enhancement were observed in 20 cases(64.5%). There were 29 cases of multilocular cysts(93.5%, 29/31), and 11 cases of fluid-fluid levels(35.5%). The MRI diagnostic accuracy for this group of cases was 100%. Conclusion:Lymphatic Malformations of head, neck and facial region in children have very characteristic features on MRI, such as typical thin wall, clear boundaries, irregular shapes, invasive growth, no enhancement, multilocular cystic masses, fluid-fluid level, etc. Furthermore, it is more appropriate for children with lymphatic malformations owing to its non-radiation and non-invasive benefits. Diagnosing lymphatic malformations in the head, neck, and facial region in children should begin with this.
Humans
;
Retrospective Studies
;
Lymphatic Abnormalities/diagnostic imaging*
;
Magnetic Resonance Imaging
;
Neck/diagnostic imaging*
;
Head/diagnostic imaging*
;
Face/diagnostic imaging*
;
Child
;
Male
;
Female
;
Child, Preschool
;
Adolescent
;
Infant
10.Impact of Antibody Immune Response and Immune Cells on Osteoporosis and Fractures
Kangkang OU ; Jiarui CHEN ; Jichong ZHU ; Weiming TAN ; Cheng WEI ; Guiyu LI ; Yingying QIN ; Chong LIU
Clinics in Orthopedic Surgery 2025;17(3):530-545
Background:
The immune system plays a critical role in the development and progression of osteoporosis and fractures. However, the causal relationships between antibody immune responses, immune cells, and these bone conditions remain unclear. This study aimed to explore these relationships using Mendelian randomization (MR) analysis.
Methods:
We collected complete blood count data from patients with fractures and healthy individuals and analyzed their differences. Then, we conducted a 2-sample, 2-step MR analysis to investigate the causal effects of antibody immune responses on osteoporosis and fractures, using inverse-variance weighted (IVW) as the primary method. We also explored whether immune cells mediate the pathway between antibodies and osteoporosis or fractures. Finally, we analyzed the functions and expression levels of key genes involved.
Results:
Overall, the fracture group exhibited increased white blood cell count, absolute neutrophil count, absolute monocyte count, platelet count, and their respective proportions, while absolute lymphocyte count, absolute eosinophil count, absolute basophil count, red blood cell count, and their proportions were decreased. We identified 44 causal relationships between antibodies and osteoporosis or fractures, with 7 supported by multiple MR methods, and 5 showing odds ratios significantly deviating from 1 in the IVW analysis. Epstein-Barr virus-related antibodies had a notable impact on osteoporosis and fractures. The human leukocyte antigen (HLA) gene family, particularly HLA-DPB1, emerged as a significant risk factor. However, immune cells were not found to mediate these effects.
Conclusions
This study elucidated the causal relationships between antibody immune responses, immune cells, and osteoporosis or fractures. The HLA gene family plays a crucial role in the interaction between antibodies and these bone conditions, with HLA-DPB1 identified as a key risk gene. Immune cells do not serve as mediators in this process. These findings provide valuable insights for future research.


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