Abstract
Background: Diabetic retinopathy (DR) is one of the major complications of diabetes,
and the consequences often lead to loss of vision. Currently, the treatments for DR are expensive,
not easily available and the use of synthetic drugs leads to various toxic effects. Bioactive compound
has been reported to be an alternative for the treatment of DR due to its ability to target multiple
pathophysiological signaling pathways. However, bioactive compound suffers from some inherent
physicochemical characteristics which restrict their use as therapeutic agents.
Objective: This review emphasizes an overview of the bioactive agents which are delivered as
nano-formulation for safe and effective ocular delivery for the treatment of DR. Additional focus
include site-specific ocular delivery with increased bioavailability to ensure highly efficacious treatment
of DR.
Results: Utilization of various bioactive compounds such as polyphenols, flavonoids, tannins, etc.,
can counterbalance the damages that occur in the retinal tissues and thereby may ameliorate DR
progression. Encapsulation of these bioactive compounds in a nanotechnology-based delivery system
can improve bioavailability, reduce the toxic effect and achieve site-specific ocular delivery.
Conclusion: The pros and cons of bioactive compounds in treating DR and the use of nanotechnology
to deliver bioactive compounds are discussed.
Keywords:
Bioactive compounds, bioavailability of bioactive compound, diabetic retinopathy, nano-medicine, nanotechnology-
based ocular delivery, targeted drug delivery.
Graphical Abstract
[11]
Anand KG, Gupta SK. Diabetic retinopathy: role of traditional medicinal plants in its management and their molecular mechanism. International Journal of Pharmaceutical Science Invention 2017; 6: 1-14.
[12]
Lei L, Yi J, Ravindran J, Yanli H. Current advances in pharmacotherapy and technology for diabetic retinopathy: a systematic review. J Ophthalmol 2018.
[14]
Tsutomu Y, Yasuhiko T, Hideya K, Yuichiro O. Ocular drug delivery for bioactive proteins. Expert Rev Ophthalmol 2014; 6(6): 657-67.
[16]
Satyaprakash B, Pir MI, Zaved A, Swati T, Siddhartha KM. Preventive roles of bioactive natural compounds in oxidative and nitrosative stress mediated pathophysiology of diabetes mellitus. asian j pharm clin res 2019; 12: 34-43.
[35]
Switi BG, Krishna MG, Rani MS. Phytochemicals for diabetes management. Pharmaceutical Crops 2014; 5(1): 11-28.
[57]
Yadav K, Chauhan NS, Saraf S, Singh D, Singh MR. Challenges and need of delivery carriers for bioactives and biological agents: an introduction.In Advances and Avenues in the Development of Novel Carriers for Bioactives and Biological Agents. 2020; pp. 1-36.
[64]
Moghimipour E, Salimi A, Yousefvand T. Preparation and evaluation of celecoxib nanoemulsion for ocular drug delivery. Asian Journal of Pharmaceutics 2017; 11(3): S543.
[72]
Kumara SK, Phanindra A, Nagaraj A, Anil GK, Shiva KR. Liposomes as ocular drug delivery platforms: a review. Saudi J Med Pharm Sci 2017; 3(7B): 808-12.
[77]
John M, Gacche RN. Nano-formulations for ophthalmic treatments. Arch Pharm Pharma Sci 2017; 1: 028-35.