期刊
BIOMEDICINES
卷 9, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/biomedicines9111519
关键词
endometriosis; lipid; S1P; macrophage
资金
- Ministry of Education, Culture, Sports, Science and Technology [19K09823]
- Grants-in-Aid for Scientific Research [19K09823] Funding Source: KAKEN
This study found that the concentration of S1P in the peritoneal fluid may be associated with endometriosis during both menstrual and non-menstrual phases. Experimental results suggest that S1P may play an important role in the formation and development of endometriosis lesions.
Sphingosine 1-phosphate (S1P), an inflammatory mediator, is abundantly contained in red blood cells and platelets. We hypothesized that the S1P concentration in the peritoneal cavity would increase especially during the menstrual phase due to the reflux of menstrual blood, and investigated the S1P concentration in the human peritoneal fluid (PF) from 14 non-endometriosis and 19 endometriosis patients. Although the relatively small number of samples requires caution in interpreting the results, S1P concentration in the PF during the menstrual phase was predominantly increased compared to the non-menstrual phase, regardless of the presence or absence of endometriosis. During the non-menstrual phase, patients with endometriosis showed a significant increase in S1P concentration compared to controls. In vitro experiments using human intra-peritoneal macrophages (M phi) showed that S1P stimulation biased them toward an M2M phi-dominant condition and increased the expression of IL-6 and COX-2. An in vivo study showed that administration of S1P increased the size of the endometriotic-like lesion in a mouse model of endometriosis.
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