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- W3100704170 abstract "Background and Objective: Depression is an independent risk factor of cardiovascular disease (CVD). We have recently shown that repeated social defeat (RSD) exaggerates atherosclerosis development by enhancing neutrophil extracellular traps (NETs) formation. Here, we investigated the impact of RSD on arterial thrombosis. Methods and Results: Eight-week-old male WT mice were exposed to RSD by housing with a larger CD-1 mouse in a shared home cage. They were subjected to vigorous physical contact daily for 10 consecutive days. Control mice were housed in the same gage without physical contact. After social interaction test to confirm depressive-like behaviors, defeated mice (19 of 31) and control mice (12 of 14) were underwent arterial injury at 10 wks of age. A filter paper saturated with 10% FeCl3 was applied on the adventitial surface of left carotid artery for 3 min and analyzed 3 hrs later. The volume of thrombi was comparable between the two groups. However, fibrinogen/fibrin-positive areas in immunofluorescent images significantly increased in defeated mice (48.8% vs. 27.8%, p < 0.01). The number of Ly-6G-positive cells in thrombi was markedly higher in defeated mice (878/mm2 vs. 144/mm2, p < 0.05). Further, Ly-6G-positive cells were co-localized with neutrophil elastase, Cit-H3, and CD42b-positive staining. Percentage of CD42b-positive area in thrombi and in vitro platelets aggregations induced by ADP or collagen were comparable between the two groups. Treatment with DNase I completely diminished the exaggerated fibrin-rich clot formation in defeated mice to an extent similar to that in control mice (22.3% vs. 25.7%, p = ns), although the number of Ly-6G-positive cells in thrombi was not affected. We therefore examined the vulnerability to NETs formation induced by thrombin-activated platelets. Flow cytometric analysis showed that in vitro NETs formation assessed by Cit-H3/MPO double-positive cells was significantly higher in defeated mice (20.7% vs 12.5%, p < 0.01). Conclusions: Our findings demonstrate that RSD enhances fibrin-rich clot formation after arterial injury by enhancing NETs formation via platelet-neutrophil interactions, suggesting that NETosis could be a new therapeutic target in depression-related CVD development." @default.
- W3100704170 created "2020-11-23" @default.
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- W3100704170 date "2020-11-17" @default.
- W3100704170 modified "2023-10-16" @default.
- W3100704170 title "Abstract 14458: Repeated Social Defeat Exaggerates Fibrin-rich Clot Formation in Fecl3 Induced Arterial Thrombosis Mice Model by Enhancing Nets Formation" @default.
- W3100704170 doi "https://doi.org/10.1161/circ.142.suppl_3.14458" @default.
- W3100704170 hasPublicationYear "2020" @default.
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