Abstract:
:Serotonin is known to be present in pancreatic β-cells and to play several physiological roles, including insulin secretion, β-cell proliferation, and paracrine inhibition of α-cells. However, the serotonin production of different cell lines and islets has not been compared based on age, sex, and diabetes related conditions. Here, we directly compared the serotonin concentrations in βTC and MIN6 cell lines, as well as in islets from mice using ultra-performance liquid chromatography tandem mass spectrometry. The average serotonin concentration was 5-10 ng/mg protein in the islets of male and non-pregnant female mice. The serotonin level was higher in females than males at 8 weeks, although there was no difference at 1 year. Furthermore, we observed serotonin by immunofluorescence staining in the pancreatic tissues of mice and human. Serotonin was detected by immunofluorescence staining in a portion of β-cells from islets of old female mice, but not of male or young female mice. A similar pattern was observed in human pancreas as well. In humans, serotonin production in β-cells was associated with a diabetes-free condition. Thus, serotonin production in β-cells was associated with old age, female sex, and diabetes-free condition.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Kim YG,Moon JH,Kim K,Kim H,Kim J,Jeong JS,Lee J,Kang S,Park JS,Kim Hdoi
10.1016/j.bbrc.2017.09.130subject
Has Abstractpub_date
2017-11-25 00:00:00pages
1197-1203issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(17)31911-3journal_volume
493pub_type
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