Ocular therapy using alpha-2 adrenergic receptor agonists...

A - Human Necessities – 61 – K

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A61K 9/00 (2006.01)

Patent

CA 2603069

Ophthalmically therapeutic materials, such as liquid-containing compositions and polymeric drug delivery systems, include a therapeutic component which includes an alpha 2 adrenergic receptor agonist that is cleared from the anterior segment of an individual's eye to which the material is administered. The alpha 2 adrenergic receptor agonist may have a vitreal half-life greater than about three hours. The present materials are effective in treating an ocular condition(s) that affect the anterior segment of an eye, or the anterior and posterior segment of the eye. The materials are suitable for intravitreal or periocular administration and can provide prolonged drug delivery and therapeutic benefits to patients to which the materials have been administered. The alpha 2 adrenergic receptor agonists can be provided in liquid-containing formulations and/or bioerodible and/or non-bioerodible polymeric implants and microparticles. Methods of making and using the present materials are also described.

Des substances ophtalmiquement thérapeutiques, telles que des compositions contenant un liquide et des systèmes d'administration de médicaments polymères, comprennent un composant thérapeutique qui contient un agoniste du récepteur adrénergique alpha-2 épuré du segment précédent de l'oeil d'un patient auquel on administre la substance. L'agoniste du récepteur adrénergique alpha-2 peut présenter une demi-période vitréenne supérieure à environ 3 heures. Les substances de cette invention sont efficaces dans le traitement d'état(s) oculaire(s) affectant le segment précédent de l'oeil ou le segment antérieur et postérieur de l'oeil. Les substances servent à l'administration intravitréenne ou périoculaire et peuvent assurer l'administration de médicaments prolongée et des bénéfices thérapeutiques aux malades, auxquels on administre les substances. Les agonistes du récepteur adrénergiques alpha-2 peuvent adopter la forme de formulation contenant un liquide et/ou d'implants et de microparticules polymères bioérodables et/ou non bioérodables. L'invention concerne également des procédés de fabrication et d'utilisation de ces substances.

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