Scleral permeability of a small, single-stranded oligonucleotide.
Scleral permeability of a small, single-stranded oligonucleotide.
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小单链寡核苷酸的巩膜通透性。
DOI:
10.1089/108076804773710830
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
Edelhauser,HenryF
中科院分区:
文献类型:
--
作者:
ShulerJr,RKeith;Dioguardi,PhyllisK;Henjy,Charles;Nickerson,JohnM;Cruysberg,LPJ;Edelhauser,HenryF
Developing more effective ocular drug delivery systems is essential to improving the treatment of posterior segment eye disease. The large target area provided by the sclera and potentially less vision threatening complications are advantages of transscleral administration compared to more traditional modalities of drug delivery to the posterior segment. We aimed to determine the permeability coefficient for thein vitrodiffusion of a small, single-stranded, oligonucleotide across human sclera. Transscleral permeability was measured by placing 100μL of 2.96 × 10-4mol single-stranded, fluorescein-labeled oligonucleotide (MW = 7998.3) on the episcleral surface of sclera mounted in a perfusion chamber. Fractions of choroidal perfusate were collected hourly for 24 hours. The permeability constant orKtransfor the transscleral diffusion of the naked, single-stranded, fluorescein-labeled oligonucleotide was 7.67 ± 1.8 × 10-7cm/s (mean ± SEM,N= 7). The permeability constant orKtransafter intrascleral injection of the same fluorescein-labeled oligonucleotide was 1.32 ± 0.42 × 10-7(mean ± SEM,N= 4). This analysis demonstrates that diffusion of a naked, 24-base, single-stranded, fluorescein-labeled oligonucleotide can be accomplished by both of the described methods. The ability to deliver single-stranded oligonucleotides across the sclera may prove to be advantageous given the development of several novel therapeutic strategies that use similar molecules.
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DOI:
--
发表时间:
1993
期刊:
Ophthalmology (Rochester, Minn.)
影响因子:
--
作者:
S. Zeng;C. Hu;H. Wei;Y. Lu;Y. Zhang;J. Yang;G. Yun;W. Zou;B. Song
通讯作者:
B. Song
影响因子:
--
作者:
G. Sanborn;Rajiv Anand;Robert E. Torti;S. Nightingale;Stanley X. Cal;Bradley E. Yates;P. Ashton;Thomas J. Smith
通讯作者:
Thomas J. Smith
影响因子:
4.4
作者:
Carrasquillo, KG;Ricker, JA;Adamis, AP
通讯作者:
Adamis, AP
影响因子:
1.4
作者:
Dhillon, B;Kamal, A;Leen, C
通讯作者:
Leen, C
DOI:
10.1073/pnas.93.10.4851
发表时间:
1996-05-14
影响因子:
11.1
作者:
Robinson, GS;Pierce, EA;Smith, LEH
通讯作者:
Smith, LEH