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Layers of interstitial fluid flow along a“slit-shaped”vascular adventitia

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2021年第8期22卷 647-663页

作者： Hongyi LI You LYU Xiaoliang CHEN Bei LI Qi HUA Fusui JI Yajun YIN Hua LI Cardiology Department Xuanwu HospitalCapital Medical UniversityBeijing 100053China Cardiology Department Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing 100730China Radiology Department China-Japan Friendship HospitalBeijing 100029China Department of Engineering Mechanics Tsinghua UniversityBeijing 100084China Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China

Interstitial fluid(ISF)flow through vascular adventitia has been discovered ***,its kinetic pattern was *** used histological and topographical identification to observe ISF flow along venous vessels in *** magnetic resonance imaging(MRI)in live subjects,the inherent pathways of ISF flow from the ankle dermis through the legs,abdomen,and thorax were enhanced by paramagnetic *** fluorescence stereomicroscopy and layer-by-layer dissection after the rabbits were sacrificed,the perivascular and adventitial connective tissues(PACTs)along the saphenous veins and inferior vena cava were found to be stained by sodium fluorescein from the ankle dermis,which coincided with the findings by *** direction of ISF transport in a venous PACT pathway was the same as that of venous blood *** confocal microscopy and histological analysis,the stained PACT pathways were verified to be the fibrous connective tissues,consisting of longitudinally assembled ***-time observations by fluorescence stereomicroscopy revealed at least two types of spaces for ISF flow:one along adventitial fibers and another one between the vascular adventitia and its covering *** nanoparticles and surfactants,a PACT pathway was found to be accessible by a nanoparticle ofvascular vessels.A hypothetical"gel pump"is proposed based on interfacial tension and interactions to regulate ISF *** experimental findings may inspire future studies to explore the physiological and pathophysiological functions of

关键词： vascular adventitia Interstitial fluid Connective tissue Interfacial zone

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