一氧化氮

Objective To investigate the protective effects of L-arg and antegrade selective cerebral perfusion through right subclavian artery on brain during deep hypothermic circulatory arrest.

目的：研究一氧化氮前体L-精氨酸和经右锁骨下动脉选择性脑灌注在深低温停循环中对脑组织的保护效果。

Purpose: To explore the change of nitric oxide in plasma and antral mucosa and whether NO may play a role in non-ul cer dyspepsia.

摘 要 目的：探讨非溃疡性消化不良患者血浆及胃窦粘膜中一氧化氮含量有无变化以及它在NUD疾病过程中的可能作用和临床意义。

Obstructive sleep apneal/hyponea syndrome patients, no matter whether complicated by cardiovascular diseases or not, have significant vascular endothelial cell dysfunction, which can be improved through the continuous positive airway pressure treatment.

阻塞性睡眠呼吸暂停／低通气综合征患者无论是否合并心脑血管疾病，血浆一氧化氮、内皮素1和可溶性P选择素均存在明显异常；而持续气道正压通气治疗可有效纠正其异常。

The results obtained are as follows:(1) intrarenal artery injection of capsaicin (20, 40, and 60 nmol/kg) increased the renal afferent nerve activity in a dose-dependent manner with unchanged arterial pressure;(2) pretreatment with ruthenium red (40 mmol/kg), a capsaicin receptor antagonist, completely abolished the effect of capsaicin; and (3) pretreatment with a nitric oxide synthase inhibitor L-NAME ( N6-nitro-L-arginine methylester, 0.1 mmol/kg), significantly enhanced the ARNA response to capsaicin.

结果表明：(1)肾动脉内注射辣椒素20、40和60nmol/kg可呈剂量依赖性地兴奋肾传入纤维的活动，而动脉血压不变；(2)静脉内预先应用辣椒素受体阻断剂钌红(40 mmok/kg)，可完全阻断辣椒素对肾传入纤维的兴奋作用。(3)静脉内预先注射一氧化氮合酶抑制剂L-NAME(0.1 mmok/kg)，能延长并增强肾传入神经对辣椒素的反应。

The results obtained are as follows:(1) injection of 50, 100, and 200 nmol/kg adenosine into the renal artery increased the renal afferent nerve activity in a dose-dependent manner with unchanged arterial pressure;(2) pretreatment with 8-cyclopenthl -1,3-dipropylxanthine (DPCPX, 160 nmol/kg), an adenosine A1 receptor antagonist, partly abolished the effect of adenosine; and (3) pretreatment with a nitric oxide synthase inhibitor N w-nitro- L -arginine methylester (L -NAME, 0.1 mmol/kg) significantly enhanced the ARNA response to adenosine.

结果表明：(1)肾动脉内注射50， 100和200 nmol/kg腺苷可呈剂量依赖性地兴奋肾神经传入纤维的活动，而动脉血压不变。(2)肾动脉内预先应用选择性腺苷A1受体阻断剂DPCPX (160 nmol/kg)，可部分阻断腺苷对肾神经传入纤维的兴奋作用。(3)静脉应用一氧化氮合酶抑制剂 L -NAME(0.1 mmol/kg)预处理，延长并增强了肾神经传入纤维对腺苷的反应。

The results obtained are as follows:(1) injection of 50, 100, and 200 nmol/kg adenosine into the renal artery increased the renal afferent nerve activity in a dose-dependent manner with unchanged arterial pressure;(2)pretreatment with 8-cyclopenthl-1,3-dipropylxanthine (DPCPX, 160 nmo//kg), an adenosine A1 receptor antagonist, partly abolished the effect of adenosine; and (3) pretreatment with a nitric oxide synthase inhibitor Nω-nitro-L-arginine methylester (L-NAME, 0.1 mmol/kg)significantly enhanced the ARNA response to adenosine.

结果表明：(1)肾动脉内注射50，100和200nmol/kg腺苷可呈剂量依赖性地兴奋肾神经传入纤维的活动，而动脉血压不变。(2)肾动脉内预先应用选择性腺苷A1受体阻断剂DPCPX(160nmol/kg)，可部分阻断腺苷对肾神经传入纤维的兴奋作用。(3)静脉应用一氧化氮合酶抑制剂L-NAME(0.1mmol/kg)预处理，延长并增强了肾神经传入纤维对腺苷的反应。

The results obtained are as follows:(1) Intrarenal artery injection of adenosine ( 50, 100, and 200 nmol/kg ) increased the ARNA in a dose-dependent manner (from 100% to 138.06 ± 7.16 %, 201.09 ± 21.85 %, and 313.73 ± 23.81 % respectively, P 0.001 ; lasted for 2 ~ 6 min) with arterial pressure unchanged;(2) Intrarenal adenosine ( 100 nmol/kg ) increased single-unit discharge of ARNA from 0.19 ± 0.03 to 0.42 ± 0.09 impulse/s ( P 0.001 ), lasting 1~3 min;(3) Pretreatment with DPCPX ( 160 nmol/kg ) partly blocked the effects of adenosine on single-unit activity from 0.45 ± 0.04 to 0.29 ± 0.03 impulse/s ( P 0.001 ) while MAP was unaltered.

静脉内预先注射一氧化氮合酶抑制剂L-NAME（0.1 mmol/kg），增强并延长了肾传入纤维对腺苷（100 nmol/kg）的反应（ARNA由0.45 ± 0.10增加至0.64 ± 0.09 impulses·s-1 ， P 0.001；反应持续时间由2~5 min延长至3.5~7.5 min）。

The pathological changes of the lung and the number of positive NOS staining cells in pulmonary arteriole, pulmonary small veins, bronchioli and pulmonary alveoli in each group were observed Results The numbers of positive NOS sta...

一氧化氮在肺损伤的过程中起着重要的作用，超短波对NOS的活性具有明显的调节作用

Objective To explore the effects of plasma endothelin -1(ET-1) and nitric oxide levels on the pathogenesis of asthmatoid chronic bronchitis.

目的 探讨血浆内皮素-1(ET-1)、一氧化氮在喘息型慢性支气管炎患者血浆中的表达水平及临床意义。

It's suggested that a lower production of NOS in the intestine may influence the function of atresic intestine.

先天性小肠闭锁的近端肠壁内一氧化氮产生的减少，可能会影响闭锁区域肠道的功能。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。