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- W3114803720 endingPage "811" @default.
- W3114803720 startingPage "797" @default.
- W3114803720 abstract "This article presents a comprehensive review on controlled release hormonal contraceptive systems that include transdermal patches, intravaginal rings (IVRs), intrauterine devices (IUDs), injectables and subdermal implants. These systems represent a substantial advance from traditional oral contraceptive pills, to improve upon safety, efficiency, and compliance among women. The widespread use of controlled release systems is hindered by limitations, which are discussed in this review. Biodegradable polymers such as poly (lactic-co-glycolic acid) and polycaprolactone have been used to formulate subdermal implants and injectable microspheres to eliminate the need for implant removal and reduce provider intervention. To address low permeability in transdermal patches, permeation enhancers such as alkanols, fatty acids, prodrugs, and vesicular delivery for steroids have been investigated. Local anesthetics in the form of creams, gels and sprays have been evaluated to alleviate the pain associated with IUD insertion. Among methods for device fabrication, 3D printing has emerged as a potential approach for fabricating customizable IVRs and IUDs. Several other modified delivery systems such as transdermal microneedle patches, in situ forming injectable implants, microspheres embedded in implants and IVRs addressing multiple clinical conditions have been investigated for controlled release of contraceptive hormones. To ensure drug release at zero-order rates, empirical and theoretical modelling have been extensively employed and evaluated. The limitations of low predictive power associated with empirical modelling may be overcome through theoretical modelling and simulation that consider underlying mechanisms. Newer approaches such as Monte Carlo based simulation and deep learning models based on artificial neural networks can prove highly beneficial in developing precise contraceptive delivery system, to enhance the quality of life for women worldwide." @default.
- W3114803720 created "2021-01-05" @default.
- W3114803720 creator A5032654094 @default.
- W3114803720 creator A5061981656 @default.
- W3114803720 date "2021-02-01" @default.
- W3114803720 modified "2023-10-09" @default.
- W3114803720 title "Advances in controlled release hormonal technologies for contraception: A review of existing devices, underlying mechanisms, and future directions" @default.
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