经典的“激素”定义系指由特殊的细胞合成的高效能化合物,释放入细胞外液,进入血流,与远隔部位该化合物的受体结合,而影响后者功能,此即所谓“远距分泌”(t-elecrine)。不少资料表明,这样一个严格限制性的定义不能概括激素的全面。目前认为激素可具有神经内分泌,神经分泌、旁分泌、神经递质,内分泌等几种功能模式[2a],有时一个激素可同时具有多种模式作 The classic definition of “hormone” refers to the high-performance compounds synthesized by special cells, released into the extracellular fluid, into the bloodstream, and the distant parts of the compound receptor binding, which affects the latter function, the so-called “far T-elecrine. ” A lot of information shows that such a restrictive definition can not sum up the comprehensive hormone. Now that the hormone can have neuroendocrine, neuroendocrine, paracrine, neurotransmitter, endocrine and other several functional modes [2a], and sometimes a hormone can simultaneously have a variety of modes