Objective To analyze the influence path of medical students'professional identity on positive defensive medical behaviors and examine the mediating effect of medical risk perception between the two,aiming to provide theoretical support and practical reference for medical education to actively adapt to the demands of the medical and health system reform and promote the scientific guidance of positive defensive medical behaviors.Methods ln 2020,a questionnaire survey was conducted among medical students from four medical colleges in Heilongjiang Province using cluster sampling method,and data analysis was performed using SPSS 27.0 software.Results Medical students'professional identity showed a significant positive correlation with their positive defensive medical behavior(β=0.225,P＜0.001),with medical risk perception acting as a partial mediator(indirect effect accounting for 19%of the total effect).Professional identity(β=0.183,P＜0.001)and medical risk perception(β=0.195,P＜0.001)exerted direct positive effects on positive defensive medical behavior.Conclusion Medical students'professional identity drives them to adopt positive defensive medical behaviors by strengthening their sense of responsibility ethics and risk cognition ability,and medical risk perception is a key mediating variable in this process.Educational management should integrate policy-oriented clinical decision-making training and balance medical safety and efficiency through the collaborative mechanism of"professional identity-risk perception-behavioral practice".

Objective:To analyze the genetic characteristics of hemagglutinin（HA）and neuraminidase（NA）of influenza A（H1N1）pdm09 viruses in Kunming during the 2022-2023 influenza season.Methods:A total of 15 strains of A（H1N1）pdm09 influenza virus isolated from sentinel hospital surveillance and from outbreaks from April 2022 to March 2023 in Kunming were chosen for sequencing. The genetic analysis，which included sequence alignment，homology analysis，construction of phylogenetic tree and amino-acid mutations analysis，was carried out using MAFFT version 7，MegAlign and MEGA 11.Results:Fourteen strains isolated during the 2022-2023 influenza season in Kunming belong to clade 6B.1A.5a.2a，and A/Kunming/284/2023 belonged to clade 6B.1A.5a.2a.1. They all diverged from the northern hemisphere vaccine strain A/Wisconsin/588/2019 in clade 6B.1A.5a.2 recommended by WHO during the 2022-2023 influenza season. Comparing with the HA of the vaccine strain：A186T and Q189E，which might cause the reduction of vaccine protection，were identified in Sb of 14 strains；P137S，K142R in Ca and A186T，Q189E in Sb were identified in A/Kunming/284/2023 and two strains isolated from Thailand. The four mutations at tow antigenic sites identified immune escape at the molecular level. Q189E in the 190-helix and E224A in the 220-loop，which might change the pathogenicity of A（H1N1）pdm09 viruses，were identified in 15 strains. Comparing with NA of the vaccine strain：S200N in 14 strains and S339L in 1 strain were identified in antigenic sites. The two mutations might reduce the protection of antibodies induced by NA.Conclusion:Strengthening influenza surveillance and timely detecting new variants in Kunming contributes to preventing the importation of foreign strains and issuing early warnings for influenza outbreaks.

Objective:To explore the advantages of robotic-arm assisted total hip arthroplasty (rTHA) in acetabular component positioning and lower limb length assessment in patients with severe pelvic coronal tilt.Methods:A retrospective analysis was conducted on the data of 122 patients with unilateral end-stage hip disease and coronal pelvic tilt angle >3° who underwent total hip arthroplasty (THA) at the First Medical Center of PLA General Hospital from June 2022 to December 2023. Among them, 44 patients underwent rTHA, and 78 underwent manual THA (mTHA). The rTHA group included 18 males and 26 females, with an average age of 60.5±9.3 years; the mTHA group included 41 males and 37 females, with an average age of 58.5±8.4 years. Compare the differences in the anteversion angle, abduction angle, pelvic tilt angle, leg length discrepancy (LLD) of the acetabular prosthesis, and the proportions of patients with LLD>0.5 cm and >1 cm between the two groups of patients after surgery. Calculate the proportion of outlier rates of acetabular abduction angle (<30° or >45°), and proportions within Callanan's safe zone. The early efficacy of the hip joint was evaluated by using the modified Harris score and joint range of motion.Results:All patients were followed up for 6 to 12 months, with an average of 8 months. All the surgical incisions of the patients achieved primary healing. Postoperative comparisons showed no statistically significant differences in acetabular abduction angle (39.5°±3.3° vs. 38.4°±7.3°) or anteversion angle (20.7°±1.6° vs. 19.7°±1.6°) between rTHA and mTHA groups ( P>0.05). However, pelvic tilt angle [2.5° (1.1°, 3.6°) vs. 3.5° (2.3°, 5.9°)] showed a statistically significant difference ( U=4.371, P=0.008). The rTHA group exhibited smaller absolute LLD [0.2 (0.1, 0.4) cm vs. 0.5 (0.2, 0.5) cm] and lower proportions of LLD >0.5 cm [14% (6/44) vs. 49% (38/78)] and >1 cm [2% (1/44) vs. 18% (14/78)], with statistical significance ( P<0.05). The rTHA group had a lower outlier rate for acetabular abduction angle (<30°or >45°) compared to the mTHA group [2% (1/44) vs. 33% (26/78)], with statistical significance (χ 2=10.388, P<0.001). Taking the Callanan safety zone as the standard, the proportion of acetabular cups within the safe zone was significantly higher in the rTHA group (98%, 43/44) compared to the mTHA group (67%, 52/78), with a statistically significant difference (χ 2=13.998, P<0.001). The modified Harris score and hip joint range of motion in the mTHA group increased from 47.6±6.6 points and 83° (73°, 88°) before the operation to 83.5±11.2 points and 118° (110°, 122°) at the last follow-up, respectively. The rTHA group increased from 46.5±9.2 points and 79° (71°, 90°) before the operation to 85.0±12.5 points and 124° (116°, 130°) at the last follow-up. The differences in the modified Harris score and hip joint range of motion between the two groups before the operation and at the last follow-up were statistically significant ( P<0.05). However, there was no statistically significant difference between the groups at the last follow-up ( P>0.05). No THA-related complications occurred during follow-up period. Conclusion:For patients with end-stage hip joint diseases with coronal tilt exceeding 3°, robotic-assisted technology significantly improves the accuracy of acetabular component placement during THA and offers better control of postoperative LLD.

We report a family with multiple endocrine neoplasia type 1(MEN1), in which the proband presented with primary amenorrhea and was diagnosed with both a pituitary prolactinoma and an ACTH-secreting adenoma. Genetic testing identified a heterozygous MEN1 gene c. 1449_1476del mutation in the proband, as well as in six additional family members, who exhibited variable clinical phenotypes. Following initial transsphenoidal pituitary surgery, the proband's symptoms and biochemical abnormalities persisted, with elevated ACTH and cortisol levels. Functional imaging using [ 68Ga]-DOTA-TATE PET/CT confirmed residual pituitary tumor tissue, and a second surgery resulted in biochemical remission.

Objective:To analyze the medication law of Professor Liu Guangzhen in the treatment of diabetic nephropathy (DN) with qi-yin deficiency and blood stasis syndrome using data mining methods.Methods:From March 2023 to April 2024, the TCM outpatient prescriptions used by Professor Liu to treat DN with qi-yin deficiency and blood stasis syndrome were collected. The database was established by Excel 2019, and the property, taste, meridian, and use frequency of drugs were analyzed through the TCM inheritance assistance system V2.5. The Apriori algorithm in IBM SPSS Modeler 18.0 was used to analyze the association rules and draw the network diagram of high-frequency drugs, and the two-step hidden tree analysis algorithm (LTM-EAST) in the Lantern 5.0 was used to establish the hidden structure model of high-frequency Chinese materia medica. The obtained hidden variables were clustered and interpreted comprehensively, and scored by Bayesian information measure (BIC).Results:A total of 314 prescriptions were included, involving 182 kinds of Chinese materia medica, with a total frequency of 9 242 times. High frequency Chinese materia medica included Astragali Radix, Saposheikovize Radix, Atractylodis Macrocephalae Rhizoma fried with wheat bran, Litchi Semen, Hedyotis diffusa willd, Benincasae Exocarpium, Mori Folium, etc. The medicinal property was mainly warm, the tastes were mainly sweet, bitter and pungent, and the meridian tropism was mainly spleen, stomach, liver and kidney meridians. The efficacy classification was mainly tonic drugs, heat-clearing drugs, water-clearing and dampness-percolating drugs, and blood circulation-activating drugs. There were 150 association rules of high-frequency Chinese materia medica, including Astragali Radix-Saposheikovize Radix, Atractylodis Macrocephalae Rhizoma fried with wheat bran-Hedyotis diffusa willd, Saposheikovize Radix-Benincasae Exocarpium, etc. A total of 15 hidden variables, 30 hidden classes and 5 comprehensive clustering models were obtained by hidden structure model analysis.Conclusions:Professor Liu's treatment of DN withqi-yin deficiency and blood stasis syndrome is mainly based on tonifying qi and yin, tonifying spleen and kidney, removing dampness and turbidity and removing blood stasis. According to different conditions, the focus of medication has changed.

Objective To explore the impact of obstructive sleep apnea(OSA)on cognitive impairment in post-stroke patients,to explore its underlying mechanism and to evaluate potential diagnostic value by dynamically moni-toring the level of brain-derived neurotrophic factor(BDNF)and Tau protein in serum.Methods Totally 96 stroke patients admitted to Mianyang third People's Hospital from February 2022 to June 2024 were selected.They were divided into the groups complicated with OSA and control one without OSA following up of neuropsychological scales for 1 week,1 month,3 months,and 6 months after stroke for evaluating cognitive function.Enzyme-linked immunosorbent assay(ELISA)was applied to detect the level of BDNF and Tau protein in serum.The correlation of test results and the degree of cognitive impairment as well as their diagnostic value were analyzed.Results The AHI in the OSA group was significantly higher than that of control group,while LSaO2 and MSaO2 were significantly lower in the OSA group(P＜0.05).One week and 1,3,6 month months after the onset of the disease,the MMSE and MoCA scores in the OSA group were significantly lower than those in the control group,BDNF level was signifi-cantly lower while Tau protein level was significantly higher as compare to those in control group(P＜0.05).Pear-son correlation analysis showed that the serum BDNF level was positively correlated with both MMSE score(r=0.654,P＜0.001)and MoCA score(r=0.689,P＜0.001).However,the serum Tau protein level was nega-tively correlated with both MMSE score(r=-0.623,P＜0.001)and MoCA score(r=-0.667,P＜0.001).The ar-ea under the curve(AUC)of the combined detection of BDNF and Tau protein was greater than that of the individ-ual detection.The diagnostic value of the combined detection of BDNF and Tau protein for cognitive impairment in post-stroke patients was greater than that of the individual detection(P＜0.05).Conclusions OSA significantly exacerbates patients'cognitive impairment after stroke.Elevated serum BDNF level and decreased Tau protein level may be the underlying mechanisms of cognitive impairment.Serum BDNF and Tau protein may function as potential biomarkers for diagnosis of cognitive impairment after stroke.

Objective To explore the influencing factors of immune-associated thyroid dysfunction caused by sintilimab treatment in solid tumors and construct a prediction model.Methods Medical records of patients diagnosed with solid tumors and treated with sintilimab at Peking University People's Hospital(Xizhimen Campus,Tongzhou Campus,Shijiazhuang Campus)from January 2023 to September 2024 were collected to explore the influencing factors that caused immune-related thyroid dysfunction using univariate and multifactorial binary logistic regression analyses and to establish a prediction model.The predictive effect of the model was assessed using the receiver operating characteristic(ROC)curve.Results A total of 120 patients were included,and 33 presented with immune-related thyroid dysfunction.Multifactorial logistic regression analysis revealed that thyroid-stimulating hormone(TSH)[OR=2.470,95%CI=(1.279,4.771)]and treatment cycles[OR=1.298,95%CI=(1.117,1.509)]were independent risk factors for the occurrence of immune-associated thyroid dysfunction,and the difference was statistically significant(P＜0.05).The area under the ROC curve was(0.897±0.043)[95%CI=(0.813,0.981)],the Yoden index was 0.703,and the model prediction accuracy was 86.5%.Conclusion The risk of immune-related thyroid dysfunction caused by sintilimab is high,and TSH and treatment cycle are the influencing factors,and the constructed model has certain predictive value and is of reference significance.

Objective To investigate the expression of YWHAQ protein in gastric adenocarcinoma tissues and its correlation with clinical pathological features and prognosis. Methods A total of 127 patients with gastric cancer who underwent radical surgery were enrolled. Clinical data and postoperative cancer tissue samples were collected from the patients. Immunohistochemistry was used to detect the protein expression of YWHAQ in gastric adenocarcinoma tissues. The relationship between YWHAQ expression and clinical pathological features and prognosis was analyzed. Bioinformatics prediction was performed to identify potential pathways regulated by YWHAQ in gastric adenocarcinoma. A protein-protein interaction network for YWHAQ was constructed using the STRING database. Results YWHAQ gene expression was significantly higher in gastric adenocarcinoma tissues than in normal tissues (P<0.05). The expression level of the YWHAQ protein was significantly correlated with age, tumor invasion depth, lymph node metastasis, and tumor stage (P<0.05). Kaplan-Meier survival analysis showed that patients with high YWHAQ expression had significantly poorer long-term survival than those with low expression (P<0.0001). Cox regression analysis revealed that high YWHAQ expression and distant metastasis were independent risk factors for gastric cancer (HR>1, P<0.05). Enrichment analysis indicated that YWHAQ positively regulated processes such as cell cycle, angiogenesis, and DNA damage repair. Conclusion YWHAQ is highly expressed in gastric adenocarcinoma tissues and may be associated with the occurrence, invasion, and metastasis of gastric adenocarcinoma. High YWHAQ expression and distant metastasis are independent risk factors for the prognosis of gastric adenocarcinoma patients.

BackgroundMigraine is a common chronic neurological disease， and patent foramen ovale （PFO） has been closely associated with migraine. Current research primarily focuses on the pathological mechanism and the therapeutic effects of interventional closure， with limited attention paid to the impact of PFO on sleep quality in migraine patients. ObjectiveTo compare the difference in sleep quality between PFO-positive and PFO-negative migraine patients， and to analyzes influencing factors of sleep quality in PFO-positive migraine patients， so as to provide references for clinical interventions to improve sleep quality in PFO-positive migraine patients. MethodsA total of 673 migraine patients who met the diagnostic criteria of migraine in the International Classification of Headache Disorders， third edition （ICHD-3）， and all patients underwent contrast-enhanced transcranial Doppler （c-TCD） and transthoracic echocardiographic right heart contrast echocardiography （cTTE） in the Third Hospital of Mianyang from January 2020 to October 2024. Basic demographic data were collected using a self-designed questionnaire， headache severity was assessed with the Visual Analogue Scale （VAS）， and sleep quality was invaluated using the Pittsburgh Sleep Quality Index （PSQI）. PFO patients was diagnosed through c-TCD combined with c-TTE. Binary logistic regression analysis was employed to examine the influencing factors of sleep quality in PFO-positive migraine patients. ResultsA total of 673 （100.00%） migraine patients were enrolled， including 223 PFO-positive cases （33.14%） and 450 PFO-negative cases（66.86%）. The PFO-positive group showed significantly more severe headache severity （χ²=15.799， P<0.01） and poorer sleep quality （χ²=14.377， P<0.01） compared with PFO-negative group. PFO-positive patients demonstrated significantly higher barrier factor scores of sleep quality， sleep latency， sleep efficiency， sleep disturbance， hypnotic medication use， and daytime dysfunction compared with PFO-negative counterparts （t=3.634， 3.269， 2.785， 3.428， 2.907， 3.637， Bonferroni adjust P<0.05/7=0.007）.By contrast， no significant difference was noted in sleep duration scores between the two groups（t=2.349， Bonferroni adjust P>0.05/7=0.007）.The Binary Logistic regression analysis revealed that age （OR=1.021， 95% CI： 1.001~1.041）， headache severity （OR=6.030， 95% CI： 4.085~8.901）， and PFO grade （OR=1.893，95% CI： 1.288~2.784）were significant influencing factors for sleep quality in migraine patients with PFO. ConclusionMigraine patients with PFO-positive exhibited poorer sleep quality compared wtih PFO-negative patients. Older age， higher headache servity， and more severe PFO grade are identified as risk factors for impaired sleep quality in PFO-positive migraine patients.