Evidence map›Paper›PMID 25425389›Full record

ArticleAAPS PharmSciTech2015

Nanomicellar Topical Aqueous Drop Formulation of Rapamycin for Back-of-the-Eye Delivery.

Kishore Cholkar, Sriram Gunda, Ravinder Earla, Dhananjay Pal, Ashim K Mitra

Open access · bronzeAbstract read
In one paragraph

Article in AAPS PharmSciTech, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
6.4field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

39 citing papers in PubMed, 106 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Kishore CholkarDivision of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 5258 Health Science Building 2464 Charlotte Street, Kansas, Missouri, 64108, USA.
Sriram Gunda
Ravinder Earla
Dhananjay Pal
Ashim K Mitra
University of Missouri–Kansas City · US

Funding

Ocular Disposition of Antimicrobial AgentsR01EY009171 · NEI · UNIVERSITY OF MISSOURI KANSAS CITY · PI MITRA, ASHIM K. · 1992 to 2010
$3.0M
Transscleral Transport & Polymeric Delivery of Antibody & Steroids for Macular EdR01EY010659 · NEI · UNIVERSITY OF MISSOURI KANSAS CITY · PI MITRA, ASHIM K. · 1996 to 2010
$2.5M
NEI NIH HHS R01 EY009171NEI NIH HHS R01 EY010659NEI NIH HHS R01EY010659-14NEI NIH HHS R01EY09171-16
6 · The paper itself

Abstract

The objective of this study was to develop a clear, aqueous rapamycin-loaded mixed nanomicellar formulations (MNFs) for the back-of-the-eye delivery. MNF of rapamycin (0.2%) was prepared with vitamin E tocopherol polyethylene glycol succinate (TPGS) (Vit E TPGS) and octoxynol-40 (Oc-40) as polymeric matrix. MNF was characterized by various parameters such as size, charge, shape, and viscosity. Proton nuclear magnetic resonance ((1)H NMR) was used to identify unentrapped rapamycin in MNF. Cytotoxicity was evaluated in human retinal pigment epithelial (D407) and rabbit primary corneal epithelial cells (rPCECs). In vivo posterior ocular rapamycin distribution studies were conducted in male New Zealand white rabbits. The optimized MNF has excellent rapamycin entrapment and loading efficiency. The average size of MNF was 10.98 ± 0.089 and 10.84 ± 0.11 nm for blank and rapamycin-loaded MNF, respectively. TEM analysis revealed that nanomicelles are spherical in shape. Absence of free rapamycin in the MNF was confirmed by (1)H NMR studies. Neither placebo nor rapamycin-loaded MNF produced cytotoxicity on D407 and rPCECs indicating formulations are tolerable. In vivo studies demonstrated a very high rapamycin concentration in retina-choroid (362.35 ± 56.17 ng/g tissue). No drug was identified in the vitreous humor indicating the sequestration of rapamycin in lipoidal retinal tissues. In summary, a clear, aqueous MNF comprising of Vit E TPGS and Oc-40 loaded with rapamycin was successfully developed. Back-of-the-eye tissue distribution studies demonstrated a very high rapamycin levels in retina-choroid (place of drug action) with a negligible drug partitioning into vitreous humor.

Indexed as

Administration, OphthalmicAdministration, TopicalAnimalsAqueous HumorCells, CulturedChemistry, PharmaceuticalDrug Delivery SystemsEpithelial CellsEpithelium, CornealHumansMaleOphthalmic SolutionsPolyethylene GlycolsRabbitsRetinal Pigment EpitheliumSirolimusOphthalmic SolutionsPolyethylene GlycolsSirolimustocophersolanVitamin E

Identifiers

PMID25425389
PMCPMC4444623
OpenAlexW2160165998

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.