Objectives: . This study aimed to explore the role of the Pcdh15 gene in hearing maintenance and to examine the effects of its deficiency on cochlear structure, cochlear function, and hearing loss in mice. Methods: . CRISPR/Cas9 technology was used to generate Pcdh15 knockout (KO) mice. Auditory function was evaluated using hearing tests, while histological approaches were employed to assess morphological changes in cochlear hair cells and spiral ganglion neurons (SGNs). RNA sequencing (RNA-seq) was performed on cochlear tissue from postnatal day 18 (P18) wild-type (WT) and Pcdh15 KO mice to identify differentially expressed genes (DEGs). These DEGs were subjected to functional annotation and pathway analysis, with particular emphasis on oxidative phosphorylation (OXPHOS). Reactive oxygen species (ROS) levels were quantified using flow cytometry and DCFH-DA assays. Results: . Pcdh15 KO mice exhibited progressive sensorineural hearing loss, which worsened to profound deafness by P18. Notably, cochlear hair cells and SGNs showed substantial loss and pronounced morphological abnormalities, particularly within the basal high-frequency region. RNA-seq analysis identified 1,359 DEGs, including 1,024 downregulated and 335 upregulated genes. Pathway analysis indicated that Pcdh15 deficiency was associated with inhibition of the OXPHOS pathway, potentially disrupting mitochondrial respiratory chain complexes I, III, IV, and V and thereby impairing energy production and ATP metabolism. In addition, early-stage cochleae from KO mice demonstrated elevated ROS levels and increased oxidative stress, suggesting that redox imbalance may contribute to hearing damage. Conclusion . Pcdh15 plays a critical role in hearing maintenance. Its deficiency is associated with severe hearing loss and marked cochlear abnormalities, which are linked to inhibition of OXPHOS, disruption of energy metabolism, and exacerbation of oxidative stress. Together, these findings provide new insights into the mechanisms underlying hearing loss and suggest potential targets for therapeutic intervention.

[Objective] To evaluate the therapeutic effect of autologous platelet-rich plasma (PRP) for chronic endometritis (CE). [Methods] A retrospective analysis was conducted on 36 patients with CE who had failed antibiotic treatment. The clinical outcomes, pregnancy rates, and early miscarriage rates were assessed following PRP treatment. Meanwhile, the CE patients of receiving first/second-line Clinical drug treatment were used as the control experiment group. [Results] Among the 36 patients treated with PRP, the effective rate was 83.33%. The clinical pregnancy rate in the treatment group was higher than that in the control group [17-36(65.38%) vs 14/27(51.85%), P>0.05], and the early miscarriage rate was lower 2/17(11.76%) vs 2/14(14.29%), P>0.05]. [Conclusion] PRP therapy is effective for CE, with no antibiotic resistance or side effects, and can be widely promoted as a treatment option.

Objective:To evaluate the value of ultrasound radiomics combined with machine learning for early diagnosis of seronegative Hashimoto’s thyroiditis (SN-HT) .Methods:This retrospective study included 164 patients from Liaoning Provincial People’s Hospital , Lixin County People’s Hospital, Linghai Dalinghe Hospital, Fengcheng Phoenix Hospital, who underwent thyroidectomy for solitary nodules with normal thyroid function between Nov. 2016 and Jan. 2024. Postoperative pathology confirmed Hashimoto’s thyroiditis (HT) in some cases, who were further categorized into antibody-positive and antibody-negative groups based on serum antibody status. Patients without Hashimoto’s thyroiditis served as the control group. A total of 298 ultrasound images were analyzed. Radiomics features were extracted from hypoechoic non-nodular areas within 0.5 cm surrounding the tumor. Two senior pathologists and two senior ultrasound physicians independently assessed lymphocytic infiltration, eosinophilic changes of follicular epithelium, and the proportion of hypoechoic areas in pathology and ultrasound images, respectively. A machine learning model, CCH-NET, was developed using linear regression and t-distributed stochastic neighbor embedding (t-SNE) techniques. The dataset was divided into a training set (80%) and a validation set (20%) to compare the diagnostic accuracy of CCH-NET with that of senior ultrasound physicians. Results:In internal validation, CCH-NET achieved a diagnostic accuracy of 88.89% for both antibody-positive and antibody-negative groups, significantly higher than the 66.67% accuracy of senior ultrasound physicians ( P<0.01). In external validation, CCH-NET achieved 75.00% and 66.67% accuracy for the two groups, compared to 50.00% by senior ultrasound physicians. For the control group, both methods achieved 93.33% accuracy. The AUC of CCH-NET was 0.848, outperforming senior ultrasound physicians (0.681) ,demonstrating superior diagnostic performance. Conclusion:The radiomics-based CCH-NET model, using non-nodular hypoechoic areas as a specific indicator, can accurately identify early SN-HT in euthyroid patients. It significantly outperforms senior ultrasound physicians, improving diagnostic accuracy and reducing missed diagnoses.

Objective:To evaluate the value of ultrasound radiomics combined with machine learning for early diagnosis of seronegative Hashimoto’s thyroiditis (SN-HT) .Methods:This retrospective study included 164 patients from Liaoning Provincial People’s Hospital , Lixin County People’s Hospital, Linghai Dalinghe Hospital, Fengcheng Phoenix Hospital, who underwent thyroidectomy for solitary nodules with normal thyroid function between Nov. 2016 and Jan. 2024. Postoperative pathology confirmed Hashimoto’s thyroiditis (HT) in some cases, who were further categorized into antibody-positive and antibody-negative groups based on serum antibody status. Patients without Hashimoto’s thyroiditis served as the control group. A total of 298 ultrasound images were analyzed. Radiomics features were extracted from hypoechoic non-nodular areas within 0.5 cm surrounding the tumor. Two senior pathologists and two senior ultrasound physicians independently assessed lymphocytic infiltration, eosinophilic changes of follicular epithelium, and the proportion of hypoechoic areas in pathology and ultrasound images, respectively. A machine learning model, CCH-NET, was developed using linear regression and t-distributed stochastic neighbor embedding (t-SNE) techniques. The dataset was divided into a training set (80%) and a validation set (20%) to compare the diagnostic accuracy of CCH-NET with that of senior ultrasound physicians. Results:In internal validation, CCH-NET achieved a diagnostic accuracy of 88.89% for both antibody-positive and antibody-negative groups, significantly higher than the 66.67% accuracy of senior ultrasound physicians ( P<0.01). In external validation, CCH-NET achieved 75.00% and 66.67% accuracy for the two groups, compared to 50.00% by senior ultrasound physicians. For the control group, both methods achieved 93.33% accuracy. The AUC of CCH-NET was 0.848, outperforming senior ultrasound physicians (0.681) ,demonstrating superior diagnostic performance. Conclusion:The radiomics-based CCH-NET model, using non-nodular hypoechoic areas as a specific indicator, can accurately identify early SN-HT in euthyroid patients. It significantly outperforms senior ultrasound physicians, improving diagnostic accuracy and reducing missed diagnoses.

【Objective】 To explore the model of "One Core, Multiple Elements" emergency blood donation volunteer team (referred to as the Model) . 【Methods】 The Nanjing City Voluntary Blood Donation Joint Meeting serves as the core, with diverse entities including party committees, government departments, district governments, social organizations, enterprises, blood donors, etc. Following the principles of "emergency response in emergencies, wartime readiness, combining regular and wartime efforts," and adhering to the framework of the Model, the emergency blood donation volunteer team system in Nanjing was constructed. 【Results】 1) After the construction of the Model (2018—2022), the total number of emergency blood donation volunteers in Nanjing City increased by 191% compared to the pre-construction period (2013—2017), with an average annual blood donation of 20 929, showing significant differences (P<0.05). 2) After the construction of the Model, the number of emergency blood donation during the winter and summer increased by 206% and 185%, respectively, compared to the pre-construction period, demonstrating significant differences (P< 0.05) .3) Prior to the construction of the Model, Nanjing lacked a relatively stable emergency volunteer team. After the construction, Nanjing established a total of 5 relatively stable volunteer teams, with the district-level government and township personnel accounting for the highest proportion (52.96%), followed by medical personnel (23.95%), enterprise team (11.10%), State-owned Assets Supervision and Administration Commission team (7%), and Nanjing municipal government team (4.98%). 4) Following the Model, during the COVID-19 pandemic, Nanjing successfully initiated two Level Ⅱ blood emergency responses, with emergency blood donations reaching 23 041. 【Conclusion】 The Model can effectively ensure the blood supply in Nanjing region during emergencies.

Objective:To construct a mouse asthma model induced by mugwort pollen and to explore endotyping,providing methods for subsequent precision treatment.Methods:BALB/c mice were intraperitoneally injected with mugwort pollen extract(MPE)to sensitize,following MPE intranasal challenge to construct MPE allergic asthma murine model.Mice were randomly divided into PBS sensitization and PBS challenge(P-P),MPE sensitization and PBS challenge(M-P),MPE sensitization and MPE challenge model(M-M)groups.24 h after final challenge,mice were performed to examine airway responsiveness;bronchoalveolar lavage fluid(BALF)was harvested for cell counting and statistical classification of inflammatory cells through flow cytometry analysis.Pulmonary slides were collected for pathological examination,including HE,PAS,Masson and α-SMA immunohistochemical staining.ELISA was used to detect levels of IFN-γ,IL-4,IL-5,IL-13,IL-17A in lung tissue and serum,as well as serum total IgE and MPE-specific IgE,IgG1,IgG2a levels.Results:Pathological examination showed higher airway reactivity,more inflammatory cells infiltration around airway,obvious goblet metaplasia,thickening of airway smooth muscles and dramatical fibrin deposition around airway in model group.Total cell numbers of BALF were increased from<1×105 cells/ml in P-P group to>5×105 cells/ml in model group,in which eosinophils were predominant cellular type,levels of IL-4,IL-13,IL-17A in lung and IL-5,IL-13 levels in serum were significantly increased,as well as significant increasing levels of total IgE and MPE-specific IgE,IgG1,IgG2a.Conclusion:MPE-sensitized and challenged mice induces typical eosinophilic asthma featured with elevated eosinophils,as well as secretion of inflammatory factors of type 2 and type 17,IgE,IgG1 and IgG2a subtypes soars to high levels.

Objective:To explore the mediating effect of appearance functional internalization between social comparison tendency and body image distress of college students.Methods:From June to September 2023, a cross-sectional survey was conducted among 308 college students with the social comparison tendency scale, the functional internalization questionnaire of college students' appearance and the body image anxiety scale for adolescent students.SPSS 22.0 software was used for common method bias test, descriptive statistics and correlation analysis, Mplus 8.0 was used for structural equation construction, and Bootstrap method was used for intermediary effect analysis.Results:Body image distress (43.86±8.78) was positively correlated with social comparison tendency (35.20±6.04) and appearance functional internalization (38.35±9.68) ( r=0.35, 0.33, both P<0.01).There was also a positive correlation between social comparison tendency and appearance functional internalization ( r=0.51, P<0.01). The effect of social comparison tendency on body image distress was mediated by appearance functional internalization, and the mediating effect value was 0.137, accounted for 35.13%(0.137/0.390) of the total effect. Conclusion:The appearance functional internalization mediates the relationship between social comparison tendency and body image distress.Social comparison tendency can not only directly predict body image distress, but also can predict body image distress, indirectly through appearance functional internalization.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.

Oral squamous cell carcinoma(OSCC)associated pain commonly predicts adverse events among patients.This clinical feature indicates the engagement of nociceptors on sensory neurons during the development of malignancy.However,it is yet to be determined if targeting oncometabolite-associated nociception processes can hinder OSCC progression.In this study,we reported that nociceptive endings infiltrating both clinical samples and mouse tumor xenografts were associated with poorer clinical outcomes and drove tumor progression in vivo,as evidenced by clinical tissue microarray analysis and murine lingual denervation.We observed that the OSCC microenvironment was characteristic of excessive adenosine due to CD73 upregulation which negatively predicted clinical outcomes in the TCGA-HNSC patient cohort.Notably,such adenosine concentrative OSCC niche was associated with the stimulation of adenosine A2A receptor(A2AR)on trigeminal ganglia.Antagonism of trigeminal A2AR with a selective A2AR inhibitor SCH58261 resulted in impeded OSCC growth in vivo.We showed that trigeminal A2AR overstimulation in OSCC xenograft did not entail any changes in the transcription level of CGRP in trigeminal ganglia but significantly triggered the release of CGRP,an effect counteracted by SCH58261.We further demonstrated the pro-tumor effect of CGRP by feeding mice with the clinically approved CGRP receptor antagonist rimegepant which inhibited the activation of ERK and YAP.Finally,we diminished the impact of CGRP on OSCC with istradefylline,a clinically available drug that targets neuronal A2AR.Therefore,we established trigeminal A2AR-mediated CGRP release as a promising druggable circuit in OSCC treatment.

Oral squamous cell carcinoma(OSCC)associated pain commonly predicts adverse events among patients.This clinical feature indicates the engagement of nociceptors on sensory neurons during the development of malignancy.However,it is yet to be determined if targeting oncometabolite-associated nociception processes can hinder OSCC progression.In this study,we reported that nociceptive endings infiltrating both clinical samples and mouse tumor xenografts were associated with poorer clinical outcomes and drove tumor progression in vivo,as evidenced by clinical tissue microarray analysis and murine lingual denervation.We observed that the OSCC microenvironment was characteristic of excessive adenosine due to CD73 upregulation which negatively predicted clinical outcomes in the TCGA-HNSC patient cohort.Notably,such adenosine concentrative OSCC niche was associated with the stimulation of adenosine A2A receptor(A2AR)on trigeminal ganglia.Antagonism of trigeminal A2AR with a selective A2AR inhibitor SCH58261 resulted in impeded OSCC growth in vivo.We showed that trigeminal A2AR overstimulation in OSCC xenograft did not entail any changes in the transcription level of CGRP in trigeminal ganglia but significantly triggered the release of CGRP,an effect counteracted by SCH58261.We further demonstrated the pro-tumor effect of CGRP by feeding mice with the clinically approved CGRP receptor antagonist rimegepant which inhibited the activation of ERK and YAP.Finally,we diminished the impact of CGRP on OSCC with istradefylline,a clinically available drug that targets neuronal A2AR.Therefore,we established trigeminal A2AR-mediated CGRP release as a promising druggable circuit in OSCC treatment.