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应用XAFS研究十二指肠中锌的相对浓度和状态
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作者 隋美霞 海风 +1 位作者 王宗伟 王汉海 《饲料工业》 北大核心 2018年第15期35-38,共4页
试验采用外翻肠囊方法,以不同锌源(ZnO、ZnSO_4、ZnMet、ZnLys、ZnSO_4+Met、ZnSO_4+Lys)为处理因素,体外密闭培养绵羊十二指肠40 min,应用XAFS技术分析十二指肠肠囊中锌浓度和状态。试验结果表明:就提高十二指肠肠囊中锌浓度而言,有机... 试验采用外翻肠囊方法,以不同锌源(ZnO、ZnSO_4、ZnMet、ZnLys、ZnSO_4+Met、ZnSO_4+Lys)为处理因素,体外密闭培养绵羊十二指肠40 min,应用XAFS技术分析十二指肠肠囊中锌浓度和状态。试验结果表明:就提高十二指肠肠囊中锌浓度而言,有机锌明显优于无机锌,十二指肠肠囊中有机锌的吸收机理与无机锌的相同,通过不依赖于载体调节的非饱和扩散被吸收的,解离成离子后通过无机锌的吸收途径被吸收。此外,本试验条件下,无机锌与配体蛋氨酸及赖氨酸的结合反而抑制了锌元素的吸收。本研究开创了应用同步辐射研究锌动物营养先河,并且确定了有机锌在绵羊十二指肠肠道中的吸收机理,为有机锌和无机锌的合理应用提供了依据。 展开更多
关键词 XAFS 十二指肠肠囊 相对浓度 状态
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Retrieval-balloon-assisted enterography in post-pancreaticoduodenectomy endoscopic retrograde cholangiopancreatography 被引量:6
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作者 Ming Zhuang Wen-Jie Zhang +2 位作者 Jun Gu Ying-Bin Liu XueFeng Wang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第47期7109-7112,共4页
This case reports an application of conventional duodenoscope in a post pancreaticoduodenectomy patient with the help of retrieval balloon assisted enterography.The 56-year-old woman had pancreaticoduodenectomy with C... This case reports an application of conventional duodenoscope in a post pancreaticoduodenectomy patient with the help of retrieval balloon assisted enterography.The 56-year-old woman had pancreaticoduodenectomy with Child reconstruction 9 mo ago because of pancreatic adenocarcinoma and now there are recurrent enlarged lymph nodes in the anastomotic stoma of hepaticojejunostomy.Considering the patient's late-stage cancer,a plastic stent was then successfully placed there to drainage.The main challenge in this case was the extremely long afferent loop and blind cannulation through the anastomotic stoma of hepaticojejunostomy.Retrieval balloon assisted enterography is very helpful for duodenoscope going through the reconstructed intestinal tract and for the cannulation.After two weeks,the patient remained free of painful symptoms and free of fever.Liver function improved well.Four months after the placement of stent,the patient died of cachexia without jaundice,fever and abdominal pain according to her daughter's statement. 展开更多
关键词 Endoscopic retrograde cholangiopancreatography Pancreaticoduodenectomy Duodenoscope Retrieval-balloon-assisted enterography
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