| | | | | 谷氨酰胺对铜绿假单胞菌所致肺部感染大鼠的防护作用 | | | 万献尧;毕丽岩;张永利 | | | 目的探讨谷氨酰胺在全胃肠外营养(TPN)中对铜绿假单胞菌所致肺部感染大鼠的保护作用。方法SD大鼠40只,随机分为4组,A组大鼠向气管内注入生理盐水0·3ml。B组大鼠向气管内注入0·3ml的铜绿假单胞菌悬浮液,并使细菌直接进入肺内。C组大鼠静脉泵标准的不含N(2)L-丙氨酰-谷氨酰胺(商品名为力肽)的TPN溶液160ml/kg,5d;D组大鼠静脉泵含力肽的TPN溶液160ml/kg,5d;C、D组大鼠第6天向气管内注入0·3ml的铜绿假单胞菌悬浮液,并使细菌直接进入肺内。观察大鼠生命活动。注菌48h后取外周血计数白细胞;行支气管肺泡灌洗,取灌洗液,计数其中的白细胞,测其中的TNFα、IL-1、IL-10水平及总蛋白含量。取肺、肝、回肠小块组织,光镜下观察病理改变。结果(1)实验开始时4组大鼠体重无明显差别,第8天时B、C、D组大鼠体重较A组轻;C组死亡的鼠数多于D、B组。(2)C组大鼠外周血WBC计数、血清中TNFα、IL-1高于D组,而IL-10低于D组。C组大鼠支气管肺泡灌洗液中WBC计数、总蛋白含量、TNFα高于D组,而IL-10低于D组。(3)光镜下见C组大鼠肺、肝、回肠组织病理改变明显重于D、B组,A组基本正常。结论谷氨酰胺可保护TPN大鼠的胃肠道功能,提高肺部抗感染能力,并减轻由严重感染所致其他重要器官的损害。 【作者单位】:大连医科大学附属第一医院中心ICU;大连医科大学附属第一医院中心ICU;大连医科大学附属第一医院中心ICU 【关键词】:谷氨酰胺;胃肠外营养,全;感染,肺部 【分类号】:R563.1 【DOI】:CNKI:ISSN:0578-1426.0.2006-12-013 【正文快照】: 肺部感染是危重症患者最常见的并发症之一,而危重症患者的高分解代谢可致谷氨酰胺严重缺乏,尤其是长期全胃肠外营养(TPN)者。谷氨酰胺的缺乏可致肠黏膜萎缩,肠道分泌型IgA水平降低,导致胃肠道细菌易位而诱发或加重肺部感染,进而引发多器官功能障碍。补充谷氨酰胺后可降低肠黏膜通透性,保持肠道的完整性,支持免疫系统,抑制肌肉降解。本研究通过观察铜绿假单胞菌感染及谷氨酰胺缺乏大鼠肠、肺部、肝脏组织病理学改变及补充谷氨酰胺后肠黏膜屏障作用、肺部抗感染能力的改善及血液中炎性介质水平,探讨谷氨酰胺的作用。材料与方法一、材料与方… | | | 推荐 CAJ下载 PDF下载 | | | CAJViewer7.0阅读器支持所有CNKI文件格式,AdobeReader仅支持PDF格式 | | | | Protective effect of glutamine on rats with pseudomonas pneumonia | | | WAN Xian-yao;BI Li-yan;ZHANG Yong-li. Intensive Care Unit;The First Affiliated Hospital of Dalian Medical University;Dalian 116011;China | | | Objective To investigate the protective effect of glutamine in rats with pseudomonas pneumonia receiving total parenteral nutritional(TPN) therapy.Methods Forty Sprague-Dawley rats were randomly divided into 4 groups (Group A, B, C and D).Rats in Group A received,by intra-tracheal route, infusion of 0.3 ml normal saline. Rats in Group B received, also by intra-tracheal route, infusion of 0.3 ml pseudomonas aeruginosa soliquoid so that the bacteria entered the lungs directly. A standard TPN solution not containing glutamine was administered intravenously to rats in Group C(160 ml/kg) for 5 days, and a TPN solution containing glutamine was administered intravenously to rats in Group D(160 ml/kg)for 5 days. On day 6,0.3 ml pseudomonas aeruginosa soliquoid was administered by intra-tracheal route to rats in Group C and D. The weight of rats,their activity and mortality were recorded. 48 h after intratracheal administration,blood and bronchoalveolar lavage fluid(BALF) samples were collected for measurement of white blood cell count,TNFα,IL-1,IL-10 and total protein of BALF. Segments of the lung,the liver and the ileum tissues were collected for HE pathological slice. Results (1) Initially there was no difference in weight between the four groups,but on day 8 the weights of rats in Group B,C,and D were significantly decreased compared with that in Group A(P<0.05).The mortality of rats in Group C was significantly higher than that in Group B and D(P<0.05). (2) There were significant differences between Group C and D in white blood cell count,blood TNFα and IL-10 level, BALF, and total protein of BALF(P<0.05). (3) Pathological changes of the lung,the liver and ileum in Group C were more severe than that in Group B and D. Group A was basically normal. Conclusion Glutamine is able to protect gastrointestinal tract function in rats receiving TPN,to improve pulmonary anti-infection ability,and to alleviate injuries of important organs caused by severe infection. 【Keyword】:Glutamine;Parenteral nutrition,total;Infection,lung |
| | | | | | 1 | 刘丕,王兴鹏,吕农华,陈洁,吴恺,徐敏; 早期肠内营养联合肠道去污对犬急性坏死性胰腺炎尿中甘露醇/乳果糖的影响 [J];实用临床医学; 2005年04期 | | 2 | 游真,黄宗文; 谷氨酰胺与重症急性胰腺炎 [J];华西医学; 2007年01期 | | 3 | 许雪峰,靳大勇,倪晓凌,匡天涛,楼文晖,王单松,吴肇汉; 谷氨酰胺对重症大鼠急性胰腺炎的保护作用及机制 [J];复旦学报(医学版); 2007年02期 | | 4 | 王兴鹏; 急性胰腺炎的肠内及肠外营养支持 [J];医师进修杂志; 2004年17期 | | 5 | 陈洁,王兴鹏,汪佩文,徐敏,吴恺,于晓峰; 早期肠内营养联合肠屏障保护合剂对重症急性胰腺炎肠屏障功能的影响 [J];胰腺病学; 2004年03期 | | 6 | 刘丕,王兴鹏,吕农华,陈洁,吴恺,徐敏; 早期肠内营养联合肠道去污对犬急性坏死性胰腺炎肠屏障的影响 [J];中华肝胆外科杂志; 2006年02期 | | 7 | 张喜平,张宇; 急性胰腺炎肠道屏障损害机制的研究进展 [J];世界华人消化杂志; 2006年04期 | | 8 | 刘丕,王兴鹏,吕农华,陈洁,吴恺; 早期肠内营养联合肠道去污对犬急性坏死性胰腺炎炎症反应的影响 [J];中华消化杂志; 2005年06期 | | 9 | 陈洁,王兴鹏,刘丕,吴恺,徐敏,于晓峰,王根生; 持续性早期肠内营养对急性坏死型胰腺炎犬肠屏障功能的影响 [J];中华医学杂志; 2004年20期 |
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| | | | | | 1 | 万献尧,毕丽岩,张永利; 谷氨酰胺对铜绿假单胞菌所致肺部感染大鼠的防护作用 [J];中华内科杂志; 2006年12期; 42-45 | | 2 | 韩芳,孙仁华; 谷氨酰胺对机械通气的COPD患者疗效评价 [J];重庆医学; 2004年05期; 125-126 | | 3 | 丁玉峰,彭金兰; 肺部感染两种治疗方案的成本-效果分析 [J];医药导报; 2001年04期; 47-48 | | 4 | 李凤阁,王素如; 头孢布西治疗肺部感染128例 [J];医药导报; 1998年06期; 33-34 | | 5 | 欧宗兴; 谷氨酰胺对伴有营养不良的COPD患者治疗效果 [J];中国热带医学; 2005年06期; 132-133 | | 6 | 许再玲!221300; 铜绿假单胞菌肺部感染78例抗菌治疗分析 [J];浙江临床医学; 2000年11期; 67-68 | | 7 | 李鸿雁,夏前明,罗克枢,李福祥,全燕,胡永霞; 老龄家兔慢性铜绿假单胞菌肺部感染的实验研究 [J];西南国防医药; 2005年02期; 15-18 | | 8 | 金咏絮
,林其昌
,陈美云
,陈守涛; 下呼吸道感染124株铜绿假单胞菌的耐药性分析 [J];福建医药杂志; 2003年05期; 49-50 | | 9 | 陆放; 铜绿假单胞菌肺部感染64例临床分析 [J];辽宁医学杂志; 2004年02期; 28-29 | | 10 | 夏筱娟; 铜绿假单胞菌下呼吸道感染的临床分析 [J];武汉市职工医学院学报; 2000年04期; 32-33+40 |
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