Serveur d'exploration sur le lymphœdème

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Quantitative imaging of lymph function

Identifieur interne : 007736 ( Main/Exploration ); précédent : 007735; suivant : 007737

Quantitative imaging of lymph function

Auteurs : Ruchi Sharma [États-Unis] ; WEI WANG [États-Unis] ; John C. Rasmussen [États-Unis] ; Amit Joshi [États-Unis] ; Jessica P. Houston [États-Unis] ; Kristen E. Adams [États-Unis] ; Arlin Cameron [États-Unis] ; SHI KE [États-Unis] ; Sunkuk Kwon [États-Unis] ; Michel E. Mawad [États-Unis] ; Eva M. Sevick-Muraca [États-Unis]

Source :

RBID : Pascal:07-0308485

Descripteurs français

English descriptors

Abstract

Functional lymphatic imaging was demonstrated in the abdomen and anterior hindlimb of anesthetized, intact Yorkshire swine by using near-infrared (NIR) fluorescence imaging following intradermal administration of 100-200 μl of 32 μM indocyanine green (ICG) and 64 μM hyaluronan NIR imaging conjugate to target the lymph vacular endothelial receptor (LYVE)-1 on the lymph endothelium. NIR fluorescence imaging employed illumination of 780 nm excitation light (∼2 mW/ cm2) and collection of 830 nm fluorescence generated from the imaging agents. Our results show the ability to image the immediate trafficking of ICG from the plexus, through the vessels and lymphangions, and to the superficial mammary, subiliac, and middle iliac lymph nodes, which were located as deep as 3 cm beneath the tissue surface. "Packets" of ICG-transited lymph vessels of 2-16 cm length propelled at frequencies of 0.5-3.3 pulses/min and velocities of 0.23-0.75 cm/s. Lymph propulsion was independent of respiration rate. In the case of the hyaluronan imaging agent, lymph propulsion was absent as the dye progressed immediately through the plexus and stained the lymph vessels and nodes. Lymph imaging required 5.0 and 11.9 μg of ICG and hyaluronan conjugate, respectively. Our results suggest that microgram quantities of NIR optical imaging agents and their conjugates have a potential to image lymph function in patients suffering from lymph-related disorders.


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<title level="j" type="main">American journal of physiology. Heart and circulatory physiology</title>
<title level="j" type="abbreviated">Am. j. physiol, Heart circ. physiol.</title>
<idno type="ISSN">0363-6135</idno>
<imprint>
<date when="2007">2007</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt>
<title level="j" type="main">American journal of physiology. Heart and circulatory physiology</title>
<title level="j" type="abbreviated">Am. j. physiol, Heart circ. physiol.</title>
<idno type="ISSN">0363-6135</idno>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>Circulatory system</term>
<term>Imaging</term>
<term>Indocyanine green</term>
<term>Lymph</term>
<term>Lymphedema</term>
<term>Mammalia</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Formation image</term>
<term>Lymphe</term>
<term>Vert indocyanine</term>
<term>Appareil circulatoire</term>
<term>Mammalia</term>
<term>Lymphoedème</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">Functional lymphatic imaging was demonstrated in the abdomen and anterior hindlimb of anesthetized, intact Yorkshire swine by using near-infrared (NIR) fluorescence imaging following intradermal administration of 100-200 μl of 32 μM indocyanine green (ICG) and 64 μM hyaluronan NIR imaging conjugate to target the lymph vacular endothelial receptor (LYVE)-1 on the lymph endothelium. NIR fluorescence imaging employed illumination of 780 nm excitation light (∼2 mW/ cm
<sup>2</sup>
) and collection of 830 nm fluorescence generated from the imaging agents. Our results show the ability to image the immediate trafficking of ICG from the plexus, through the vessels and lymphangions, and to the superficial mammary, subiliac, and middle iliac lymph nodes, which were located as deep as 3 cm beneath the tissue surface. "Packets" of ICG-transited lymph vessels of 2-16 cm length propelled at frequencies of 0.5-3.3 pulses/min and velocities of 0.23-0.75 cm/s. Lymph propulsion was independent of respiration rate. In the case of the hyaluronan imaging agent, lymph propulsion was absent as the dye progressed immediately through the plexus and stained the lymph vessels and nodes. Lymph imaging required 5.0 and 11.9 μg of ICG and hyaluronan conjugate, respectively. Our results suggest that microgram quantities of NIR optical imaging agents and their conjugates have a potential to image lymph function in patients suffering from lymph-related disorders.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>États-Unis</li>
</country>
<region>
<li>Texas</li>
</region>
</list>
<tree>
<country name="États-Unis">
<region name="Texas">
<name sortKey="Sharma, Ruchi" sort="Sharma, Ruchi" uniqKey="Sharma R" first="Ruchi" last="Sharma">Ruchi Sharma</name>
</region>
<name sortKey="Adams, Kristen E" sort="Adams, Kristen E" uniqKey="Adams K" first="Kristen E." last="Adams">Kristen E. Adams</name>
<name sortKey="Cameron, Arlin" sort="Cameron, Arlin" uniqKey="Cameron A" first="Arlin" last="Cameron">Arlin Cameron</name>
<name sortKey="Houston, Jessica P" sort="Houston, Jessica P" uniqKey="Houston J" first="Jessica P." last="Houston">Jessica P. Houston</name>
<name sortKey="Joshi, Amit" sort="Joshi, Amit" uniqKey="Joshi A" first="Amit" last="Joshi">Amit Joshi</name>
<name sortKey="Kwon, Sunkuk" sort="Kwon, Sunkuk" uniqKey="Kwon S" first="Sunkuk" last="Kwon">Sunkuk Kwon</name>
<name sortKey="Mawad, Michel E" sort="Mawad, Michel E" uniqKey="Mawad M" first="Michel E." last="Mawad">Michel E. Mawad</name>
<name sortKey="Rasmussen, John C" sort="Rasmussen, John C" uniqKey="Rasmussen J" first="John C." last="Rasmussen">John C. Rasmussen</name>
<name sortKey="Sevick Muraca, Eva M" sort="Sevick Muraca, Eva M" uniqKey="Sevick Muraca E" first="Eva M." last="Sevick-Muraca">Eva M. Sevick-Muraca</name>
<name sortKey="Shi Ke" sort="Shi Ke" uniqKey="Shi Ke" last="Shi Ke">SHI KE</name>
<name sortKey="Wei Wang" sort="Wei Wang" uniqKey="Wei Wang" last="Wei Wang">WEI WANG</name>
</country>
</tree>
</affiliations>
</record>

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