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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (5): 519-523.

• 研究原著 • 上一篇    下一篇

氯胺酮对大鼠隔内侧核和斜角带核垂直支一氧化氮合酶表达的影响

吴锋, 熊克仁   

  1. 皖南医学院解剖学教研室, 芜湖 241001,安徽
  • 收稿日期:2006-03-13 修回日期:2006-04-02 出版日期:2006-05-26 发布日期:2020-12-09
  • 通讯作者: 熊克仁, 男, 硕士生导师, 教授, 研究方向:脑的化学神经解 剖学。 Tel:0553-3932487   E-mail:xkrn@sohu.com
  • 作者简介:吴锋, 男, 硕士研究生, 研究方向:脑的神经递质。 Tel:0553-3932487   E-mail:wufeng970237@yahoo.com.cn
  • 基金资助:
    安徽省教育厅自然科学基金(No2005KJ292)

Effects of ketamine on expression of nitric oxide synthase in medial septal nuclei and vertical diagonal band of rats

WU feng, XIONG Ke-ren   

  1. Department of Anatomy, Wannan Medical College, Wuhu 241001, Anhui, China
  • Received:2006-03-13 Revised:2006-04-02 Online:2006-05-26 Published:2020-12-09

摘要: 目的: 探讨不同剂量的氯胺酮对大鼠隔内侧核(MS)和斜角带核垂直支(VDB)一氧化氮合酶 (NOS)表达的影响。 方法: 将 40 只大鼠随机分为正 常组、生理盐水 (10 ml·kg-1, ip)组、氯胺酮低、中、 高(25、50、100 mg·kg-1, ip)剂量组, 各组分别按上述设定剂量, 于晚上 21 时给药, 每天 1 次, 连续 7 d, 于 末次注射后 2 h,灌注、固定、切片, 采用还原型尼克酰胺腺嘌呤二核苷酸脱氢酶(NADPH-d)法显示MS、 VDB 背侧部和腹侧部内的 NOS 表达。 结果: 氯胺酮各剂量组大鼠MS 、VDB 背侧部和腹侧部内的 NOS 阳性神经元数量比正常组 、生理盐水组减少(P<0.05 或 P<0.01), 各剂量组之间比较差异也有统 计学意义(P<0.05);NOS 阳性神经元染色变淡, 细胞平均灰度值增加, 氯胺酮高剂量组与低剂量组相 比差异有统计学意义(P<0.01)。结论: 氯胺酮可 剂量依赖性地抑制MS 和VDB 内 NOS 的表达, 提示这可能与氯胺酮的麻醉效应和精神毒副作用有关。

关键词: 氯胺酮, 隔内侧核, 斜角带核, 一氧化氮合 酶, 大鼠

Abstract: AIM: To explore the effects in different dosage of ketamine on the expression of nitric oxide syn-thase (NOS)in medial septal nuclei (MS)and vertical diagonal band (VDB)of rats.METHODS: 40 SD rats were randomized into normal control group, normal saline (NS)group, low, middle and high dosage of ketamine (25,50, 100 mg·kg-1, ip)group.Each group was main-tained intraperitoneally by given daily dosage once a day for a period up to 7 days.That was done at 21∶00 hour each night, and by 2 h of the last administration, poured, fixed and slicedwere carried out.Method of nic-otinamide adenosine dinucleotide phosphate diaphorase (NADPH-d)was used to show the expression of NOS in MS andVDB parsdorsalis and ventro.RESULTS: Com-pared with normal control and NS group, the number of NOS positive neurons were decreased inMS andVDB pars dorsalis and ventro in ketamine groups.There were statis-tical meaing in different-dosage groups of ketamine(P<0.05 or P<0.01).Cell-dyeing became lighten, and cel-luar average optical density value wasincreased inMS and VDB pars dorsalis and ventro in each administered ket-amine groups, There were statistical meaing in high and low dosage of ketamine(P<0.01).CONCLUSION: Ketamine can reduce the expression of NOS in MS and VDB by dosage dependence, which suggests that anesthe-sia effect of ketamine has possible correlation with neuro-pathic side effect.

Key words: ketamine, medial septal nuclei, diago-nal band, nitric oxide synthasdyeing, rats

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