Abstract:
:Measurements of flow velocities at the level of individual arterial vessels and sinusoidal capillaries are crucial for understanding the dynamics of hematopoietic stem and progenitor cell homing in the bone marrow vasculature. We have developed two complementary intravital two-photon imaging approaches to determine blood flow dynamics and velocities in multiple vessel segments by capturing the motion of red blood cells. High-resolution spatiotemporal measurements through a cranial window to determine short-time dynamics of flowing blood cells and repetitive centerline scans were used to obtain a detailed flow-profile map with hemodynamic parameters. In addition, we observed the homing of individual hematopoietic stem and progenitor cells and obtained detailed information on their homing behavior. With our imaging setup, we determined flow patterns at cellular resolution, blood flow velocities and wall shear stress in small arterial vessels and highly branched sinusoidal capillaries, and the cellular dynamics of hematopoietic stem and progenitor cell homing.
journal_name
Cell Repjournal_title
Cell reportsauthors
Bixel MG,Kusumbe AP,Ramasamy SK,Sivaraj KK,Butz S,Vestweber D,Adams RHdoi
10.1016/j.celrep.2017.01.042subject
Has Abstractpub_date
2017-02-14 00:00:00pages
1804-1816issue
7issn
2211-1247pii
S2211-1247(17)30097-9journal_volume
18pub_type
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