[摘 要] 目的：探讨circ_0000615在胆管癌细胞中的表达及其对胆管癌细胞增殖、迁移和侵袭能力的影响和可能的调控机制。方法：通过qPCR检测circ_0000615在正常胆管上皮HIBEC细胞和胆管癌CCLP-1、QBC939、TFK-1和RBE细胞中的表达水平。双荧光素酶报告基因实验验证circ_0000615与miR-432-5p的靶向关系。将si-NC、si-circ_0000615（si-circ-1、si-circ-2）、inhibitor-NC和inhibitor-miR-432-5p转染至CCLP-1和QBC939细胞，转染细胞分为si-NC组、si-circ-1组、si-circ-2组、si-NC+inh-NC组、si-NC+inh-miR-432-5p组和si-circ-1+inh-miR-432-5p组，通过CCK-8、EdU和Transwell实验检测各转染组胆管癌细胞的增殖、迁移和侵袭能力。结果：在胆管癌细胞中circ_0000615呈高表达而miR-432-5p呈低表达（P<0.05或P<0.01）；双荧光素酶报告基因实验证实circ_0000615与miR-432-5p之间存在靶向关系（P<0.01）；敲减circ_0000615可明显抑制CCLP-1、QBC939细胞的增殖、侵袭和迁移能力（P<0.05或P<0.01）；下调miR-432-5p可部分逆转敲减circ_0000615对胆管癌CCLP-1和QBC939细胞增殖、迁移和侵袭的抑制作用（P<0.05或P<0.01）。结论：circ_0000615通过靶向miR-432-5p调控胆管癌细胞的增殖、侵袭和迁移。

OBJECTIVE: To investigate the correlation between the severity of obstructive sleep apnea syndrome (OSAS) and red cell distribution width (RDW) in elderly patients. METHODS: A cross-sectional study was conducted among 311 elderly patients diagnosed with OSAS in the snoring clinic between January, 2015 and October, 2016 and 120 healthy controls without OSAS from physical examination populations in the General Hospital of PLA. The subjects were divided into control group with apnea-hypopnea index (AHI) <5 (=120), mild OSAS group (AHI of 5.0-14.9; =90), moderate OSAS group (AHI of 15.0-29.9; =113) and severe OSAS group (AHI ≥ 30; =108). The clinical characteristics and the results of polysomnography, routine blood tests and biochemical tests of the subjects were collected. Multiple linear regression analysis was used to examine the correlation between OSAS severity and RDW. RESULTS: The levels of RDW and triglyceride were significantly higher in severe OSAS group than in the other groups ( < 0.01). The levels of fasting blood glucose and body mass index were significantly higher in severe and moderate OSAS groups than in mild OSAS group and control group ( < 0.05 or < 0.01). Multiple linear regression analysis showed that AHI was positively correlated with body mass index (β=0.111, =0.032) and RDW (β=0.106, =0.029). The area under ROC curve of RDW for predicting the severity of OSAS was 0.687 (=0.0001). CONCLUSIONS The RDW increases as OSAS worsens and may serve as a potential marker for evaluating the severity of OSAS.
Aged ; Cross-Sectional Studies ; Erythrocyte Indices ; Humans ; Polysomnography ; Severity of Illness Index ; Sleep Apnea, Obstructive