Objective To explore the mental quality developmental characteristics of cadets majored in military science and technology.Methods Mental Quality Questionnaire for army men (MQQA) and Symptom Checklist 90(SCL-90) were employed to evaluate 1771 cadets majored in science and technology,comparing mental quality differences related to gender,age,length of military service,grade and education level,etc.Results ① MQQA scores of cadets for aptitude (68.67±9.45),loyalty(75.98±8.97),bravery (68.46±9.12),self-confidence (65.72±6.61),willpower(67.7±8.33) and total score(345.90±37.79) were significantly higher than those of the army norm and the young army norm(P＜0.01).②There was significant age difference (P＜0.01) in MQQA scores.And the total score gradually increased with age.③There was significant length of military service difference (P＜ 0.01),and the total score decreased at the beginning 3 years and then increased later.④There was significant grade difference (P＜0.01) in MQQA scores.The scores of Grade One were significantly lower than those of Grade Two and Grade Four,but higher than those of Grade Three(P＜0.01) ; the scores of Grade Three were significantly lower than those of Grade Two and Grade Four(P＜0.01).⑤ There was significant education level difference (P＜ 0.01),and the scores of junior college students were significantly higher than those of undergraduates,graduate students and training students (P＜0.01) ; loyalty score of undergraduates was significantly higher than that of graduate students (P＜0.05) ; willpower score of graduate students was significantly lower than that of undergraduates and post-work training students (P＜0.05).Conclusion Cadets majored in science and technology have good mental quality,which is significantly influenced by age,length of military service,grade and level of education.

Objective To study the effect of field long march comprehensive training on freshmen' mental quality and mental health in military university. Methods Mental quality questionnaire for army men (MQQA), symptom checklist 90 (SCL-90), self-rating anxiety scale (SAS), self-rating depression scale (SDS) and trait anxiety inventory (TAI) were carried out on 330 freshmen at various stages on their military training. All data were analyzed by paired-sample t test. Results ①As compared with pre-training, all SCL-90 factor scores except depression factor decreased significantly (P<0.05); compared to barracks military training, recruits revealed a decrease (P<0.05) in all SCL-90 factors except factors on fear, paranoia and mental disorder. ②The scores of SDS and SAS displayed a“V”shape as they decreased after the early rise at the course of military training. After the barracks military training, SAS and SDS scored high (P<0.01);Compared with pre-training, TAI scores dropped significantly (P<0.01) after field long march; compared with post barracks military traning results, SAS, SDS and TAI scores of recruits after field long march decreased significantly (P<0.05). ③After barracks military training and field long march comprehensive training, recuits' mental quality factors scored no significant distinction (P>0.05). Conclusion Filed long march effectively improved mental health of military university recruits and relived their anxiety as well as depression.

PURPOSE: In this study, we aimed to evaluate lymphocyte-activation gene-3 (LAG-3) expression and its prognostic value in neoadjuvant-treated triple-negative breast cancer (TNBC). METHODS: LAG-3, programmed death-1 (PD-1), programmed death ligand-1 (PD-L1), and CD8⁺ tumor-infiltrating lymphocyte (TILs) levels were examined using immunohistochemistry in 148 preand 114 post-neoadjuvant chemotherapy (NACT) specimens of human TNBC tissue. Correlations between expression levels and clinicopathological features were analyzed. Prognostic values for combined detection in TNBC following NACT were evaluated. RESULTS: In pre-NACT specimens, LAG-3 expression showed a significant association with pathological complete response (pCR, p=0.038) and was correlated with PD-1 (p<0.001) and PD-L1 (p=0.008). In post-NACT specimens, high expression of LAG-3 showed significant effects on nodal status (p=0.023) and PD-1 (p<0.001). The expression of immune markers on TILs significantly increased following NACT. Multivariate analysis indicated that only nodal status (odds ratio [OR], 0.226; 95% confidence interval [CI], 0.079–0.644; p=0.005) and high quantities of CD8⁺TILs (OR, 3.186; 95% CI, 1.314–7.721; p=0.010) are independent predictors of pCR. Nodal status (hazard ratio [HR], 2.666; 95% CI, 1.271–5.594; p=0.010), CD8⁺TILs (HR, 0.313; 95% CI, 0.139–0.705; p=0.005), and the LAG-3-high/PD-L1-high group (HR, 2.829; 95% CI, 1.050–7.623; p=0.040) provided prognostic values for patients with TNBC following NACT. CONCLUSION: CD8+TILs were sensitive predictive markers in response to NACT. High expression of LAG-3 in residual tissues, especially in combination with PD-L1, was associated with poor prognosis.
Biomarkers ; Drug Therapy ; Humans ; Immunohistochemistry ; Lymphocytes, Tumor-Infiltrating ; Multivariate Analysis ; Neoadjuvant Therapy ; Polymerase Chain Reaction ; Prognosis ; Triple Negative Breast Neoplasms*

Objective:To investigate the value of prostate biopsy guided by transrectal real-time ultrasonic elastography (TRTE) combined with peak strain index (PSI) in the diagnosis of prostate cancer and the correlation with TRTE score and pathological Gleason score.Methods:A total of 80 patients with suspected prostate cancer who underwent TRTE in the First Affiliated Hospital of Hebei North University from January 2019 to December 2019 were selected. The PSI for suspicious lesions was measured, and targeted puncture biopsy guided by TRTE combined with PSI was performed on the patients, and then followed by systematic puncture biopsy. The outcomes of targeted biopsy and systematic biopsy were analyzed. Taking pathological biopsy results as the gold standard, the detection rates of prostate cancer and benign prostate lesions detected by both biopsies methods were compared; the prostate volume, serum prostate specific antigen (PSA) level and PSI were compared between patients with prostate cancer and benign prostatic lesions. The receiver operating characteristic (ROC) curve and the area under the curve (AUC) were used to determine the best cut-off value of PSI in the diagnosis of prostate cancer. The values of conventional ultrasound versus TRTE combined with PSI in the diagnosis of prostate cancer were assessed. The positive rate of biopsy puncture points under the guidance of TRTE combined with PSI was compared with that of systematic biopsy. The correlation between TRTE score and pathological Gleason score of prostate malignant lesions was analyzed.Results:Among 80 patients, 45 patients (56.25%) were diagnosed as prostate cancer by prostate puncture biopsy, and 35 patients (43.75%) were benign prostate lesions. Among 45 patients with prostate cancer, 42 cases (93.33%) of prostate cancer were detected by using TRTE combined with PSI-guided targeted puncture biopsy, and 38 cases (84.44%) of prostate cancer were detected by using systematic puncture biopsy; there was no significant difference in the detection rate of prostate cancer by both biopsies methods ( χ2 = 1.80, P = 0.180). The level of serum PSA and PSI value in the prostate cancer group were higher than those in the benign prostate lesion group, and the difference was statistically significant ( t value was 65.28 and 14.93, all P < 0.05). The clinical value of PSI value in the diagnosis of prostate cancer was analyzed by using ROC curve. The results showed that the AUC was 0.857 (95% CI 0.772-0.941), and the optimal cut-off value of PSI was 5.68; PSI ≥ 5.68 was treated as the malignant cancer and PSI < 5.68 was treated as the benign cancer. The sensitivity, specificity and accuracy of TRTE combined with PSI in the diagnosis of prostate cancer were 91.11%, 94.29%, and 92.50%, respectively, which were higher than those of conventional ultrasound (73.33%, 68.57% and 71.25%), and the differences were statistically significant (all P < 0.05). A total of 89 suspected lesions were detected in 80 patients through TRTE combined with PSI, and each suspected lesion was detected by using 2-needle targeted puncture biopsy. There were 178 needles in total including 88 needles of prostate cancer and the positive rate of puncture points was 49.44% (88/178); there were 800 needles in total detected by using 10-needle systematic puncture biopsy including 203 needles of prostate cancer and the positive rate of puncture points was 25.38% (203/800); the positive rate of puncture points guided by TRTE combined with PSI puncture biopsy was higher than that by systematic puncture biopsy, and the difference was statistically significant ( χ2 = 40.337, P < 0.05). For prostate malignant lesions, the Spearman correlation analysis showed that TRTE score was positively correlated with pathological Gleason score ( r = 0.618, P < 0.05). Conclusion:TRTE combined with PSI-guided targeted puncture biopsy plays an important role in the diagnosis of prostate cancer, and it can effectively improve the positive rate of puncture points.