Identification of exercise-regulated genes in mice exposed to cigarette smoke.

Cigarette smoke (CS) is the major risk factor for COPD and is linked to cardiopulmonary dysfunction. Exercise training as part of pulmonary rehabilitation is recommended for all COPD patients. It has several physiological benefits, but the mechanisms involved remain poorly defined. Here, we employed transcriptomic profiling and examined lung endothelium to investigate novel interactions between exercise and CS on cardiopulmonary alterations. Mice were exposed to 20 weeks of CS, CS + 6 weeks of high-intensity interval training on a treadmill, or control. Lung and cardiac (left and right ventricle) tissue were harvested and RNA-sequencing was performed and validated with RT-qPCR. Immunohistochemistry assessed pulmonary arteriolar changes. Transcriptome analysis between groups revealed 37 significantly regulated genes in the lung, 21 genes in the left ventricle, and 43 genes in the right ventricle (likelihood-ratio test). Validated genes that showed interaction between exercise and CS included angiotensinogen (p = 0.002) and resistin-like alpha (p = 0.019) in left ventricle, with prostacyclin synthetase different in pulmonary arterioles (p = 0.004). Transcriptomic profiling revealed changes in pulmonary and cardiac tissue following exposure to CS, with exercise training exerting rescue effects. Exercise-regulated genes included angiotensinogen and resistin-like alpha, however, it remains unclear if these represent potential candidate genes or biomarkers that could play a role during pulmonary rehabilitation.

Value of combined use of fine-needle aspiration and core needle biopsy in palpable breast tumors performed by pathologist: Institut Curie experience.

The aim of this study was to determine the accuracy of fine-needle aspiration (FNA) and core needle biopsy (CNB) for palpable breast tumors (PBTs). FNA and CNB of 492 PBTs from 477 patients were analyzed. Tumors were malignant in 473 cases and benign in 19 cases. There was a strong correlation (P > .05) between FNA and CNB in terms of malignancy. Among 473 malignant tumors, FNA had better accuracy and less unsatisfactory results (95.6%; 2.7%) than CNB (94.9%; 4.9%). Among 19 benign tumors, CNB was accurate in 100% compared to 94.7% using FNA. There were only two (0.4%) cases where result was unsatisfactory by both FNA and CNB. NPV was 56.3% for FNA, 43.2% for CNB, and 95.0% for FNA and CNB combined. Sensitivity was 97.0% for FNA, 94.7% for CNB, and 99.8% for FNA and CNB combined. PPV and specificity was 100% for FNA and CNB both separately and combined. Combined use of FNA with CNB is an optimal diagnostic method for PBTs. In our opinion, this should be recommended as standard for diagnosis of PBTs.