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有研究表明部分非溃疡性消化不良（ｎｏｎ－ｕｌｃｅｒｄｙｓｐｅｐ－ｓｉａ，ＮＵＤ）患者胃窦动力低下、胃排空延迟、神经内分泌失调可解释消化不良的症状［１～４］。但是否存在局部神经异常，神经递质与胃排空延迟是否有关，尚缺乏有力证据。Ｐ物质（ｓｕｂｓｔａｎｃｅＰ?
Some studies have shown that some patients with non-ulcer dyspepsia (NUD) patients with low gastric motility, delayed gastric emptying, neuroendocrine disorders can explain the symptoms of dyspepsia [1-4]. However, whether there is local neurological abnormalities, neurotransmitter and delayed gastric emptying is still lacking strong evidence. P substance (substanceP?