Cited by 105Advanced Drug Delivery SystemsOcular Surface and Contact LensAdvancements in Transdermal Drug Delivery

Topical, aqueous, clear cyclosporine formulation design for anterior and posterior ocular delivery

Open access
Cholkar, Kishore, Gilger, Brian C., Mitra, Ashim K.·2015·Translational Vision Science & Technology

Abstract

PURPOSE: The main objective of this study was to optimize cyclosporine (CsA) nanomicellar solution and study in vivo ocular CsA tissue distribution with a topical drop. METHODS: An optimized blend of hydrogenated castor oil-40 and octoxynol-40 was prepared to entrap CsA within nanomicelles. In vivo studies were conducted in New Zealand White albino rabbits with topical drop instillation. RESULTS: Average size of CsA-loaded nanomicelles was approximately 22.4 nm. Ocular tissue CsA quantification with single and multiple dosing revealed that CsA levels followed as cornea → iris-ciliary body → aqueous humor → lens. Cyclosporine levels were also found to be in the following order: conjunctiva → sclera → retina/choroid → vitreous humor. High CsA level was detected in retina/choroid (53.7 ng/g tissue). CONCLUSIONS: Ocular tissue CsA distribution studies revealed high CsA concentrations in anterior ocular tissues. Moreover, it appears that nanomicelles are transported through a conjunctival-scleral pathway and deliver CsA to the retina/choroid. Results suggest polymeric blend to be a safe carrier for anterior and posterior ocular tissues. TRANSLATIONAL RELEVANCE: This study has significant translational relevance, disclosing results that suggest that aqueous nanomicellar approach can provide high corneal and conjunctival CsA concentrations. Aqueous nanomicelles can deliver high drug concentrations not only to anterior but also to back of the eye tissues, including retina. This article provides a platform for noninvasive back of the eye drug delivery with topical eye drops. Aqueous CsA nanomicelles have no perceptible toxicity such as cell membrane damage or cytotoxicity to corneal and retinal pigment epithelial cells. Clear aqueous nanomicellar solution can be translated to human conditions for keratoconjunctivitis sicca and other anti-inflammatory conditions.

Integrity signals

Registry

Crossref · 10.1167/tvst.4.3.1

Cites

29 of 29 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

1 of the 30 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Cholkar, K., Gilger, B. C., & Mitra, A. K.
Affiliations
  • University of Missouri–Kansas City (US)
  • North Carolina State University (US)
Corresponding author
Mitra, Ashim K.
Venue
Translational Vision Science & Technology
Published
2015-05-01
Volume
4
Issue
3
Pages
1
ISSN
2164-2591 (ISSN-L)
OpenAlex
W311930526
Cited by
103
References
30
Citations by year
2026: 7 · 2025: 7 · 2024: 10 · 2023: 11 · 2022: 9 · 2021: 10 · 2020: 12 · 2019: 12 · 2018: 5 · 2017: 11 · 2016: 6 · 2015: 3
FWCI
4.62
Type
journal article
Language
en
Open access
Locations
  • Translational Vision Science & Technology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Eye Institute (R01EY009171, R01EY010659)
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advanced Drug Delivery Systems
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ocular Surface and Contact Lens
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advancements in Transdermal Drug Delivery
Keywords
cyclosporine, nanomicelles, ocular drug delivery, eye drops, hydrogenated castor oil, ocular tissue distribution, corneal drug concentration, dry eye, anti-inflammatory eye drops

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review