The problem , though , is that those anesthetics have to be applied at the site of the discomfort : disabling sodium channels throughout the nervous system could be fatal 重点是这种局部麻醉剂必须用在引起疼痛的部位；要是把整个神经系统的钠离子通道都给抑制住，可是会出人命的。
" you then get a simultaneous build - up of calcium and sodium in the cell , and it ' s ' goodbye to your neuron . ' it goes at some point into an irreersible cycle of death , " he said 他说如果细胞内钙钠离子储留，意味着你的神经元要和你说再见了，某些循环通路可能走向不可逆转的死亡。
Drug name viscous lidocaine - - topical anesthetic . decreases permeability to sodium ions in neuronal membranes and results in inhibition of depolarization , blocking transmission of nerve impulses 药名：粘性利多卡因局部麻醉减少神经元膜对钠离子的渗透，导致去极化的抑制，阻止神经冲动的传导。
All neurons possess sodium channels that open in response to changes in the voltage across the nerve cell membrane , generating the impulses that relay messages from one neuron to the next 所有的神经元都拥有钠离子通道，它会随细胞膜电位变化而开启，因而产生动作电位，可将讯息从上个神经元传给下一个。
The structure analysis indicates that there is an ion replacement between calcium ion and sodium ion in the absorbency process , and this results the structure change of the fiber 结果表明，海藻酸盐纤维在吸盐水过程中发生了离子置换，即盐水中的钠离子与纤维中的钙离子之间的置换过程导致海藻酸盐纤维的结构发生变化。
Local anesthetics that temporarily inactivate such voltage - gated sodium channels currently treat a variety of different pains , particularly those arising from a trip to the dentist 目前，有许多不同形式的疼痛（特别是去一趟牙医诊所引起的） ，可利用局部麻醉剂来止痛，原理就是将这种电位控制型的钠离子通道暂时去活化。
A potential new drug , for example , could " help the neuron to keep extruding sodium so it can help the sodium - calcium exchanger get rid of calcium , thereby not allowing calcium to reach toxic leels , " on gersdorff said 比如说有一种药可以帮助神经元泵出钠离子从而帮助钠钙交换器运输钙离子，阻止钙离子达到神经毒性浓度。
Drug name viscous lidocaine ( dilocaine ; dermaflex gel ) - - topical anesthetic . decreases permeability to sodium ions in neuronal membranes and results in inhibition of depolarization , blocking transmission of nerve impulses 药名：粘性利多卡因局部麻醉减少神经元膜对钠离子的渗透，导致去极化的抑制，阻止神经冲动的传导。
Owing to persistent electrolyte abnormalities and renal salt loss , hormone studies were done and revealed elevated concentrations of cortisol , adrenocorticotropic hormone , aldosterone , renin and 17 - hydroxyprogesterone 但实验室检查却发现持续性代谢性酸中毒，电解质失调包括低血钠，高血钾，低血氯和大量钠离子由尿液中流失。
It is a true solution of ions ( e . g . potassium , sodium , and chloride ) , small molecules ( e . g . sugars , amino acids , and atp ) , and a colloidal solution of large molecules ( e . g . proteins , lipids , and nucleic acids ) 它是含离子（钾离子，钠离子还有氯离子） ，小分子（糖，氨基酸， atp ）还有大分子胶体（蛋白质，脂肪，核酸）的溶液。
