Increased CAP37 Expression in Stable Chronic Obstructive Pulmonary Disease.

OBJECTIVE: Cationic antimicrobial protein of 37 kDa (CAP37), a neutrophil-derived protein originally identified for its antimicrobial activity, is now known to have many regulatory effects on host cells. However, its role in the pathogenesis of chronic obstructive pulmonary disease (COPD) has not been studied. We therefore investigated the expression of CAP37 in COPD and its effects on airway structural cells, including bronchial epithelial cells, smooth muscle cells, and fibroblasts. METHODS: CAP37 was detected in the lung tissue, sputum, and plasma of COPD patients and the control subjects, as well as in the neutrophils stimulated by cigarette smoke extract (CSE). BEAS-2B cells, human bronchial smooth muscle cells (HBSMCs), and MRC-5 cells were treated with CAP37 or an anti-CAP37 antibody plus CAP37. Interleukin (IL)-6 and IL-8 were detected in the BEAS-2B cells. The cell proliferation was analyzed in the HBSMCs. Collagens were also detected in the MRC-5 cells. RESULTS: The expression of CAP37 was increased in the lung tissue and sputum supernatant of the COPD patients compared with the control subjects. The sputum supernatant CAP37 levels were inversely correlated with the forced expiratory volume in the first second percentage predicted in COPD. CAP37 was induced by CSE stimulation in the peripheral blood neutrophils from healthy non-smokers. CAP37 induced expression of IL-6 and IL-8 in BEAS-2B cells, and collagen expression of lung fibroblasts (MRC-5 cells). However, CAP37 did not significantly alter the proliferation of the HBSMCs. CONCLUSION: Our findings indicated that neutrophil-derived CAP37 may be involved in airway inflammation and fibrosis in COPD via affecting the bronchial epithelial cells, and fibroblasts, thus suggesting a possible role of CAP37 in the development and progression of COPD.

Recent research on the association between signal transducer and activator of transcription 5 and childhood acute lymphoblastic leukemia. / STAT5ä¸Žå„¿ç«¥æ€¥æ€§æ·‹å·´ç»†èƒžç™½è¡€ç— å ³ç³»çš„ç ”ç©¶è¿›å±•.

Signal transducer and activator of transcription 5 (STAT5) can be involved in the processes such as cell proliferation, differentiation, apoptosis, and hematopoiesis, and its dysregulation is closely associated with the development and progression of malignant tumors including leukemia and may affect the treatment outcome and prognosis of pediatric patients. Identification of STAT5 can facilitate targeted therapy to improve the response rate of children with acute lymphoblastic leukemia. This article reviews the impact of STAT5 on the development/progression, targeted therapy strategies and the prognosis of childhood acute lymphoblastic leukemia.

Comparison of LAMP, GeneXpert, Mycobacterial Culture, Smear Microscopy, TSPOT.TB, TBAg/PHA Ratio for Diagnosis of Pulmonary Tuberculosis.

OBJECTIVE: To investigate the application value of loop-mediated isothermal amplification (LAMP), GeneXpert, mycobacterial culture, smear microscopy, TSPOT.TB (TSPOT), ratio of TB-specific antigen to phytohemagglutinin (TBAg/PHA ratio) in the detection of mycobacterium tuberculosis in the bronchoalveolar lavage fluid. METHODS: A retrospective analysis was performed on the patients who underwent bronchoscopy from December 2018 to November 2019 in Tongji Hospital. The patients with positive tuberculosis culture or positive GeneXpert in bronchoalveolar lavage fluid were selected as the case group, and those without tuberculosis served as the control group. The receiver operating characteristic (ROC) curve was used to evaluate the diagnostic value of LAMP, GeneXpert, culture, smear microscopy, TSPOT, and TBAg/PHA ratio. RESULTS: For the patients with positive cultures as case, the sensitivity of LAMP, GeneXpert, smear microscopy, TSPOT and TBAg/PHA ratio was 73.49%, 89.16%, 25.30%, 80.00%, 33.85%, respectively, the specificity was 99.00%, 100.00%, 99.00%, 86.00%, 100.00%, respectively, the area under the ROC curve (AUC) was 0.849, 0.938, 0.633, 0.830, 0.669, respectively. For the patients with positive GeneXpert as case, the sensitivity of LAMP, mycobacterial culture, smear microscopy, TSPOT and TBAg/PHA ratio was 73.20%, 74.23%, 22.68%, 68.92%, 29.73%, respectively, the specificity was 99.00%, 100.00%, 99.00%, 86.00%, 100.00%, respectively, the AUC was 0.853, 0.878, 0.623, 0.775, 0.649, respectively. CONCLUSION: The sensitivity of GeneXpert was best. The sensitivity and diagnostic value of LAMP were slightly lower than those of GeneXpert, and were similar to tuberculosis culture. The sensitivity of smear microscopy was low. The specificity of TSPOT was low. When TBAg/PHA ratio >0.2 was used as a diagnostic index, the specificity was improved, but the sensitivity was low.

Thiopental exaggerates ischemic brain damage and neurological deficits after experimental stroke in spontaneously hypertensive rats.

Thiopental is an anesthetic used for controlling high intracranial pressure (ICP) caused by brain surgery, brain trauma, and severe stroke. However, it remains controversial whether Thiopental is detrimental or beneficial in ischemic stroke. In this study, we used an animal model of ischemic stroke in spontaneously hypertensive rats to determine whether or not Thiopental is neuroprotective in the setting of brain ischemia. We observed that Thiopental caused a prolonged duration of unconsciousness with a high rate of mortality, that Thiopental created exaggerated neurological deficits that were revealed through limb placement tests at 4 days and 4 weeks after brain ischemia, and that infarct volume was increased in Thiopental-anesthetized rats. These data suggest that Thiopental is detrimental in ischemic stroke. Thus, our findings raise a caution about the use of Thiopental in the setting of ischemic stroke.

[Transumbilical laparoscopic operation for the incarcerated oblique inguinal hernia in the infants].

OBJECTIVE: To evaluate the clinical application of transumbilical double-hole laparoscopic operation for incarcerated inguinal hernia in the infants. METHODS: Forty-eight cases with incarcerated inguinal hernia (male 39, female 9) aging from 4 months to 3 years (mean 1.2 +/- 0.8 years) received the laparoscopic transumbilical double-hole operation (LTO group) during April.2003 to April.2004. Thirty cases were left side incarcerated inguinal hernia, 12 cases were right side and 6 cases were bilateral. Fifty infants of incarcerated inguinal hernias treated with traditional operation served as controls (TO group). The mean operation time, length of stay, return of bowel function and postoperative complication were compared between the two groups. RESULTS: All cases of both groups recovered without any complication. The operation time, average hospitalization and return of bowel function in LTO were (30 +/- 5) min, (7.8 +/- 0.3) h and (4.4 +/- 0.3) d, respectively, and in TO were (43 +/- 6) min, (23.3 +/- 2.4) h and (6.7 +/- 0.4) d, respectively. There was a significant difference in the two groups (P < 0.05). The patients in both groups were followed up for 3 months to one year. LTO group had no recurrence or atrophy of testis and TO group had one relapse of hernia. CONCLUSIONS: Transumbilical double-hole laparoscopic operation is safe and microinvasive. It is a useful microinvasive procedure in the treatment of incarcerated inguinal hernia for infant.