Sample collection
Peripheral blood samples from five healthy women (age 24.8 ±
4.0years (mean±SD); body mass index 22.0±1.4kg/m2)were collected
into serum collection tubes. Blood samples were centrifuged at
1600 ×g for 10 min for serum collection followed by an additional
centrifugation step at 16,000 ×g for 10 min and filtration through
0.2 μm pore size syringe filter (Sartorius GmbH, Göttingen, Germany).
In order to avoid miRNA expression differences due to inter-individual
variations, the same serum samples were used for both exosome isolation
methods.