【摘要】 目的 探討骨形成蛋白-2(bone morphogenetic protein-2,BMP-2)對室管膜前下區(anterior subventricular zone,SVZa)神經干細胞DLX5表達的影響。 方法 體外培養SVZa神經干細胞,用BMP-2及其拮抗劑Noggin誘導SVZa神經干細胞,分別用免疫熒光染色和逆轉錄-聚合酶鏈反應(RT-PCR)檢測DLX5表達變化。 結果 BMP-2組SVZa神經干細胞DLX5蛋白表達和DLX5mRNA表達水平明顯高于對照組(Plt;0.05),且該效應能被其拮抗劑Noggin特異性地抑制。 結論 BMP-2是DLX5上游調節基因,可促進SVZa神經干細胞DLX5的表達。【Abstract】 Objective To investigate the effect of bone morphogenetic protein-2 (BMP-2)on expression of DLX5 of neural stem cells in anterior subventricular zone (SVZa). Methods The neural stem cells of SVZa were separated and cultured in vitro, which were induced by BMP-2 and Noggin.Immunofluorescence staining and RT-PCR were employed to assay the expression of DLX5. Results The percentages of expression of DLX5 protein and DLX5 mRNA in BMP-2 group were much higher than those in the control group (Plt;0.05). And this induction could be specifically blocked by Noggin. Conclusion BMP-2 is an upstream gene of DLX5; BMP-2 can promote the expression of DLX5 of the neural stem cells of SVZa.
【摘要】 目的 探討2型糖尿病合并下肢血管病變血管內介入治療的臨床意義。 方法 2009年1-5月對4例2型糖尿病合并下肢血管病變患者,根據血管狹窄情況選擇不同介入治療方式,行下肢動脈造影及動脈球囊擴張或支架成形術。 結果 4例患者均有表現靜息痛及間歇性跛行,下肢血管超聲顯示糖尿病下肢動脈有不同程度的斑塊、狹窄與血栓形成,病變累及下肢股動脈、髂動脈及脛前、足背動脈。介入治療后患者下肢血管灌注得到明顯改善,靜息痛及間歇性跛行明顯改善,皮溫改善,需要截肢患者截肢平面顯著降低。 結論 通過下肢血管DSA造影檢查,準確了解糖尿病患者下肢血管的阻塞部位及程度,在保守治療基礎上選擇不同方式的介入治療,有助于下肢血管病變的明顯改善。【Abstract】 Objective To investigate the clinical significance of intervention therapy for patients with type 2 diabetes combined with vascular lesions of lower extremities. Methods From January to May, 2009, four diabetic patients with vascular lesions of lower extremities were examined by Doppler ultrasonography and digital subtration angiography (DSA). All patients were treated by percutaneous transluminal angioplasty (PTA) or stenting therapy. Results Stenoses and obstruction of lower extremity blood vessels were observed in all patients. After intervention therapy, vascular perfusion of lower extremities was improved and signs of rest pain and intermittent claudication were relieved; the skin temperature was improved, and the amputation level was apparently decreased. Conclusion It suggests that DSA is effective in judging extend and location of blood vessel stenosis,and the interventional treatment could lead to a satisfying prognosis.