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2017 ; 18
(10
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
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English Wikipedia
Topical Ocular Delivery of TGF-?1 to the Back of the Eye: Implications in
Age-Related Neurodegenerative Diseases
#MMPMID28973964
Platania CBM
; Fisichella V
; Fidilio A
; Geraci F
; Lazzara F
; Leggio GM
; Salomone S
; Drago F
; Pignatello R
; Caraci F
; Bucolo C
Int J Mol Sci
2017[Sep]; 18
(10
): ä PMID28973964
show ga
Dysregulation of the transforming growth factor-?1 (TGF-?1)/selected small mother
against decapentaplegic (SMAD) pathway can be implicated in development of
age-related macular degeneration (AMD), and the delivery of TGF-?1 could be
beneficial for AMD. We developed a new ophthalmic formulation of TGF-?1 assessing
the ocular pharmacokinetic profile of TGF-?1 in the rabbit eye. Small unilamellar
vesicles (SUV) loaded with TGF-?1 were complemented with Annexin V and Ca(2+),
and the vitreous bioavailability of TGF-?1 was assessed after topical ocular
administration by a commercial ELISA kit. We detected high levels of TGF-?1
(C(max) 114.7 ± 12.40 pg/mL) in the vitreous after 60 min (T(max)) from the
topical application of the liposomal suspension. Ocular tolerability was also
assessed by a modified Draize's test. The new formulation was well tolerated. In
conclusion, we demonstrated that the novel formulation was able to deliver
remarkable levels of TGF-?1 into the back of the eye after topical
administration. Indeed, this TGF-?1 delivery system may be useful in clinical
practice to manage ophthalmic conditions such as age-related macular
degeneration, skipping invasive intraocular injections.