In Vivo Microcirculation
In Vivo Microcirculation - Related Videos
07:19
The Mouse Cremaster Muscle Preparation for Intravital Imaging of the Microcirculation
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Cited by 46 •
2011
A tissue preparation is described for visualization and experimental manipulation of the living microcirculation. In anesthetized male mice, the thin, highly vascularized cremaster muscle is prepared for intravital microscopy to study microvascular networks including arterioles, capillaries and venules. This preparation is readily adapted for rats and hamsters.
08:37
Intravital Microscopy of the Mouse Brain Microcirculation using a Closed Cranial Window
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Cited by 36 •
2010
Intravital microscopy to follow temporal and spatial hemodynamic and inflammatory events in the pial microcirculation.
07:36
Intravital Microscopy of the Microcirculation in the Mouse Cremaster Muscle for the Analysis of Peripheral Stem Cell Migration
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Cited by 4 •
2013
Intravital microscopy of the mouse M. cremaster microcirculation offers a unique and well-standardized in vivo model for the analysis of peripheral bone marrow stem cell migration.
06:02
Microiontophoresis and Micromanipulation for Intravital Fluorescence Imaging of the Microcirculation
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Cited by 3 •
2011
Microiontophoresis entails movement of ions from a micropipette in response to a difference in electrical potential between the inside and outside of the micropipette. Biologically active molecules are thereby delivered in proportion to electrical current. We illustrate acetylcholine microiontophoresis in conjunction with micromanipulation to study endothelium-dependent vasodilation in the microcirculation.
10:39
Laser Doppler: A Tool for Measuring Pancreatic Islet Microvascular Vasomotion In Vivo
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Cited by 7 •
2018
Pancreatic islet microvascular vasomotion regulates islet blood distribution and maintains the physiological function of islet β cells. This protocol describes using a laser Doppler monitor to determine the functional status of pancreatic islet microvascular vasomotion in vivo and to assess the contributions of pancreatic islet microcirculation to pancreatic-related diseases.
FAQs
Local perfusion changes when vessel diameter alters the resistance to blood movement. Endothelial signaling adds biological control by linking vessel behavior to local tissue conditions. Together, these mechanisms allow blood delivery to adjust across intact tissues rather than remaining uniform. Measuring diameter and signaling-related responses therefore helps explain how neighboring regions can receive different levels of perfusion.
Blood viscosity influences how readily blood moves through small vessels, while red blood cell deformation affects how cells accommodate changing vessel conditions. These variables can alter local perfusion and consequently the delivery of oxygen and nutrients or removal of metabolic waste. Including both in experimental interpretation helps distinguish flow changes from changes in blood properties.
Interactions between circulating leukocytes and the vessel wall provide a cellular dimension to microcirculatory regulation. Observing these interactions alongside vessel behavior can show how immune cells participate in local vascular responses. This is especially relevant to inflammation studies, where changes in leukocyte behavior may be interpreted together with altered perfusion rather than as isolated events.
A basic in vivo workflow combines an intact organism or tissue with real-time imaging and physiological measurements. Imaging follows blood movement and vessel behavior as conditions change, while physiological measurements provide complementary evidence about perfusion. Researchers can then relate observed microcirculatory responses to tissue demand, vascular signaling, or disease-related changes, connecting dynamic visual observations with measurable function.
In biology and medicine, In Vivo Microcirculation studies are useful for examining inflammation, wound healing, tumor vascularization, and vascular disease. Each setting can reveal a different relationship between local perfusion and tissue state. Comparing these conditions helps researchers characterize how intact vascular responses relate to pathology and tissue repair.
Because measurements are made in living tissues, findings can preserve the connection between vessel behavior and surrounding tissue function. This makes the approach useful for evaluating how perfusion adapts to tissue demand and for characterizing therapeutic response. The resulting observations can support improved models of tissue function, especially when vascular changes must be interpreted in their biological context.