Latanoprost Stimulates Ocular Lymphatic Drainage: An In Vivo Nanotracer Study
Identifieur interne : 003513 ( Main/Exploration ); précédent : 003512; suivant : 003514Latanoprost Stimulates Ocular Lymphatic Drainage: An In Vivo Nanotracer Study
Auteurs : Alex L. C. Tam [Canada] ; Neeru Gupta [Canada] ; Zhexue Zhang [Canada] ; Yeni H. Yücel [Canada]Source :
- Translational Vision Science & Technology [ 2164-2591 ] ; 2013.
Abstract
Ocular lymphatics have been recently shown to contribute to aqueous humor outflow. It is not yet known whether lymphatic outflow can be stimulated by pharmacological agents. Here we determine whether latanoprost, a prostaglandin F2 alpha analog commonly used to lower IOP to treat glaucoma, increases lymphatic drainage from the eye.
Lymphatic drainage in mice was assessed in vivo, in 11 latanoprost-treated and 11 control animals using hyperspectral imaging at multiple times following quantum dot (QD) injection into the eye. QD signal intensity was also measured in tissue sections using hyperspectral imaging.
In the latanoprost-treated group, lymphatic drainage rate into the submandibular lymph node was increased compared with controls (1.23 ± 1.06 hours−1 vs. 0.30 ± 0.17 hours−1, mean ± SD,
This is the first evidence that latanoprost increases lymphatic drainage from the eye. The pharmacological manipulation of this newly identified lymphatic outflow pathway may be relevant to treatments aimed at lowering intraocular pressure in glaucoma.
This is the first evidence that a prostaglandin drug widely prescribed for glaucoma, enhances lymphatic drainage from the eye. The pharmacological stimulation of this newly identified outflow pathway may be highly relevant to treatments aimed at lowering IOP to prevent blindness from glaucoma.
Url:
DOI: 10.1167/tvst.2.5.3
PubMed: 24049723
PubMed Central: 3763898
Affiliations:
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Tam</name><affiliation><nlm:aff>NONE</nlm:aff></affiliation><affiliation wicri:level="1"><nlm:aff id="aff3">Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Gupta, Neeru" sort="Gupta, Neeru" uniqKey="Gupta N" first="Neeru" last="Gupta">Neeru Gupta</name><affiliation><nlm:aff>NONE</nlm:aff></affiliation><affiliation><nlm:aff>NONE</nlm:aff></affiliation><affiliation wicri:level="1"><nlm:aff id="aff4">Glaucoma and Nerve Protection Unit, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Glaucoma and Nerve Protection Unit, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Zhang, Zhexue" sort="Zhang, Zhexue" uniqKey="Zhang Z" first="Zhexue" last="Zhang">Zhexue Zhang</name><affiliation wicri:level="1"><nlm:aff id="aff3">Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Yucel, Yeni H" sort="Yucel, Yeni H" uniqKey="Yucel Y" first="Yeni H." last="Yücel">Yeni H. 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C." last="Tam">Alex L. C. Tam</name><affiliation><nlm:aff>NONE</nlm:aff></affiliation><affiliation wicri:level="1"><nlm:aff id="aff3">Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Gupta, Neeru" sort="Gupta, Neeru" uniqKey="Gupta N" first="Neeru" last="Gupta">Neeru Gupta</name><affiliation><nlm:aff>NONE</nlm:aff></affiliation><affiliation><nlm:aff>NONE</nlm:aff></affiliation><affiliation wicri:level="1"><nlm:aff id="aff4">Glaucoma and Nerve Protection Unit, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Glaucoma and Nerve Protection Unit, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Zhang, Zhexue" sort="Zhang, Zhexue" uniqKey="Zhang Z" first="Zhexue" last="Zhang">Zhexue Zhang</name><affiliation wicri:level="1"><nlm:aff id="aff3">Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Yucel, Yeni H" sort="Yucel, Yeni H" uniqKey="Yucel Y" first="Yeni H." last="Yücel">Yeni H. Yücel</name><affiliation><nlm:aff>NONE</nlm:aff></affiliation><affiliation wicri:level="1"><nlm:aff id="aff3">Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Keenan Research Centre at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation><affiliation wicri:level="4"><nlm:aff id="aff5">Ophthalmic Pathology Laboratory, University of Toronto, St. Michael's Hospital, Toronto, Ontario, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Ophthalmic Pathology Laboratory, University of Toronto, St. Michael's Hospital, Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author></analytic><series><title level="j">Translational Vision Science & Technology</title><idno type="eISSN">2164-2591</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1"><title>Purpose</title><p>Ocular lymphatics have been recently shown to contribute to aqueous humor outflow. It is not yet known whether lymphatic outflow can be stimulated by pharmacological agents. Here we determine whether latanoprost, a prostaglandin F2 alpha analog commonly used to lower IOP to treat glaucoma, increases lymphatic drainage from the eye.</p></sec><sec id="st2"><title>Methods</title><p>Lymphatic drainage in mice was assessed in vivo, in 11 latanoprost-treated and 11 control animals using hyperspectral imaging at multiple times following quantum dot (QD) injection into the eye. QD signal intensity was also measured in tissue sections using hyperspectral imaging.</p></sec><sec id="st3"><title>Results</title><p>In the latanoprost-treated group, lymphatic drainage rate into the submandibular lymph node was increased compared with controls (1.23 ± 1.06 hours<sup>−1</sup> vs. 0.30 ± 0.17 hours<sup>−1</sup>, mean ± SD, <italic>P</italic> < 0.02). Total QD signal intensity in the submandibular lymph node was greater in the latanoprost-treated group compared with controls (10.55 ± 1.12 vs. 9.48 ± 1.24, log scale, <italic>P</italic> < 0.05).</p></sec><sec id="st4"><title>Conclusions</title><p>This is the first evidence that latanoprost increases lymphatic drainage from the eye. The pharmacological manipulation of this newly identified lymphatic outflow pathway may be relevant to treatments aimed at lowering intraocular pressure in glaucoma.</p></sec><sec id="st5"><title>Translational Relevance</title><p>This is the first evidence that a prostaglandin drug widely prescribed for glaucoma, enhances lymphatic drainage from the eye. The pharmacological stimulation of this newly identified outflow pathway may be highly relevant to treatments aimed at lowering IOP to prevent blindness from glaucoma.</p></sec></div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Ontario</li></region><settlement><li>Toronto</li></settlement><orgName><li>Université de Toronto</li></orgName></list><tree><country name="Canada"><noRegion><name sortKey="Tam, Alex L C" sort="Tam, Alex L C" uniqKey="Tam A" first="Alex L. C." last="Tam">Alex L. C. Tam</name></noRegion><name sortKey="Gupta, Neeru" sort="Gupta, Neeru" uniqKey="Gupta N" first="Neeru" last="Gupta">Neeru Gupta</name><name sortKey="Yucel, Yeni H" sort="Yucel, Yeni H" uniqKey="Yucel Y" first="Yeni H." last="Yücel">Yeni H. Yücel</name><name sortKey="Yucel, Yeni H" sort="Yucel, Yeni H" uniqKey="Yucel Y" first="Yeni H." last="Yücel">Yeni H. Yücel</name><name sortKey="Zhang, Zhexue" sort="Zhang, Zhexue" uniqKey="Zhang Z" first="Zhexue" last="Zhang">Zhexue Zhang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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