Serotonin hormonally regulates lacrimal gland secretory function via the serotonin type 3a receptor.

Serotonin hormonally regulates lacrimal gland secretory function via the serotonin type 3a receptor.
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5-羟色胺激素通过5-羟色胺3A受体调节泪腺分泌功能。

DOI:
10.1038/s41598-017-06022-4
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发表时间:
2017-07-31
期刊:
影响因子:
4.6
通讯作者:
Tsubota K
Tsubota K
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Imada T;Nakamura S;Hisamura R;Izuta Y;Jin K;Ito M;Kitamura N;Tanaka KF;Mimura M;Shibuya I;Tsubota K

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泪水是泪腺分泌的细胞外液。泪液由LG、眉板腺和结膜杯状细胞分泌物组成的动态三层膜组成。LG分泌泪液的水成分,眉板腺分泌脂肪成分,结膜杯状细胞分泌粘蛋白。通过自主神经系统对LG活动的调节已被认为是维持房水泪液流动的基础。在这里,我们描述了一种激素,外周5-羟色胺,在泪液分泌中的作用。我们发现,血液中的5-羟色胺浓度通过饮食中不含5-羟色胺前体色氨酸的饮食而改变,与泪液分泌有关,并且5-羟色胺的持续减少会导致LG萎缩和自噬。在这些改变之前,5-羟色胺的减少和对LG的自主神经刺激的中断相结合。此外,我们还发现LG腺泡细胞表达的5-羟色胺3a受体通过细胞内钙动员参与泪液分泌。我们的发现表明,5-羟色胺与自主神经系统共同调节荷尔蒙,调节泪液分泌。
Tears are extracellular fluid secreted from the lacrimal gland (LG). Tears consist of a dynamic tri-layered film composed of secretions from the LG, Meibomian gland, and conjunctival goblet cells. The LG secretes the aqueous component of the tear, the Meibomian gland secretes the lipid component, and conjunctival goblet cells secrete mucin. The regulation of LG activity via the autonomic nervous system has been recognized as fundamental to maintaining aqueous tear flow. Here, we describe the role of a hormone, peripheral serotonin, in tear secretion. We found that blood serotonin concentration, changed by feeding a diet deprived of the serotonin precursor tryptophan, correlated with tear secretion, and that a sustained decrease in serotonin resulted in LG atrophy and autophagy. The combination of a decrease in serotonin with the interruption of autonomic neural stimuli to the LG preceded these alterations. Furthermore, we found that the serotonin type 3a receptor expressed in LG acinar cells is involved in tear secretion via intracellular calcium mobilization. Our findings demonstrate that hormonal regulation by serotonin, in cooperation with the autonomic nervous system, regulates tear secretion.
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发表时间: 2009-05
影响因子: 17.8
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DOI: 10.1021/bi2018909
发表时间: 2012-04-10
期刊: BIOCHEMISTRY
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DOI: 10.1371/journal.pone.0106338
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期刊: PloS one
影响因子: 3.7
作者:
Imada T;Nakamura S;Kitamura N;Shibuya I;Tsubota K
通讯作者: Tsubota K
DOI: 10.1073/pnas.160270997
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发表时间: 1972-01-01
影响因子: 5.5
作者:
CASE, RM;SCRATCHERD, T;JOHNSON, M
通讯作者: JOHNSON, M