(12) Patent Application Publication (10) Pub. No.: US 2008/0139531 A1 Yanni Et Al
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US 2008O139531A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2008/0139531 A1 Yanni et al. (43) Pub. Date: Jun. 12, 2008 (54) USE OF CONNECTIVE TISSUE MAST CELL Publication Classification STABILIZERS TO FACILITATE OCULAR SURFACE RE-EPTHELIZATION AND (51) Int. Cl. A6II 3/55 (2006.01) WOUND REPAIR A63L/335 (2006.01) (75) Inventors: John M. Yanni, Burleson, TX (US); A 6LX 3/59 (2006.01) Daniel A. Gamache, Arlington, TX A 6LX 3L/505 (2006.01) (US); Steven T. Miller, Arlington, A6II 3/4422 (2006.01) TX (US) (52) U.S. Cl. ................. 514/214.02: 514/450; 514/258.1; 514/256; 514/356 Correspondence Address: ALCON (57) ABSTRACT IP LEGAL, TB4-8, 6201 SOUTH FREEWAY Disclosed are methods of treating a wound in a subject that FORTWORTH, TX 76134 involve administering to the Subject a pharmaceutically effec tive amount of a composition that includes one or more (73) Assignee: ALCONMANUFACTURING human connective tissue mast cell stabilizers, wherein LTD., Fort Worth, TX (US) administration of the composition results in treatment of the wound. In particular embodiments, the wound is an oph (21) Appl. No.: 11/947,041 thalmic or dermal wound, Such as a corneal epithelial defect, a conjunctival wound, or dermal abrasion. Administration, (22) Filed: Nov. 29, 2007 for example, may be by topical application of the composition to the ocular surface or skin. Exemplary mast cell stabilizers Related U.S. Application Data include olopatadine, variants of olopatadine, alcaftidine, (60) Provisional application No. 60/872,715, filed on Dec. derivatives of alca?tidine, dihydropyridines, and spleen 4, 2006. tyrosine kinase inhibitors. US 2008/O 139531 A1 Jun. 12, 2008 USE OF CONNECTIVE TISSUE MAST CELL as in fibrotic skin disease (Nishikori et al., 1998). In particu STABILIZERS TO EACILITATE OCULAR lar, it has been reported that the healing process in an animal SURFACE RE-EPTHELIZATION AND model of wound healing corresponded strongly with mast cell WOUND REPAIR density and chymase activity in both acute and Subacute phases of wound healing. Recently, however, it has been shown that chymase released from activated mast cells may 0001. This application claims priority to U.S. Provisional inhibit the repair of Scratch-damaged monolayers of epithe Application, U.S. Ser. No. 60/872,715 filed Dec. 4, 2006. lial cells in vitro (Gordon, 2005). Thus, the precise role of mast cell chymase in corneal epithelial wound healing is BACKGROUND OF THE INVENTION unknown. 0002 1. Field of the Invention SUMMARY OF THE INVENTION 0003. The present invention relates generally to the field of 0011. The present invention overcomes drawbacks of the mast cell stabilizers, pharmaceutics, and the treatment and prior art by providing for novel methods of treating wounds in prevention of wounds. More particularly, the present inven a subject, such as ocular surface wounds and skin wounds. In particular, the inventors have found that inhibitors of mast cell tion concerns methods of treating or preventing a wound in a chymase release can be applied in the treatment of wounds in Subject that involve administering a pharmaceutically effec a subject. For example, topical olopatadine, a mast cell sta tive amount of a composition comprising one or more mast bilizer that inhibits mast cell chymase release, can aid in the cell stabilizers to the wound of the subject. process of corneal and/or conjunctival re-epithelialization 0004 2. Description of Related Art and wound repair. 0005 Wounds of the ocular surface, such as a corneal 0012. The invention set forth herein is generally directed epithelial defect, are exceedingly common and occur under to a method of treating a wound in a subject, involving admin many different circumstances. For example, a corneal epithe istering to the Subject a pharmaceutically effective amount of lial defect may be due to trauma, infection, a side effect of a composition that includes one or more mast cell Stabilizers, allergic conjunctivitis, contact lens wear, exposure keratopa wherein administration of the pharmaceutically effective thy, or ocular Surgery. Measures to promote healing are amount of the composition results in treatment of the wound. numerous, and include the discontinuation of potentially In a particular embodiment, the wound is an ophthalmic toxic medications and the use of ophthalmic lubricants, anti wound. In another embodiment, the wound is a skin wound. infective agents, and anti-inflammatory agents. Other mea 0013. A “subject” refers to either a human or non-human, Sures to promote healing include the protection of the ocular Such as primates, mammals, and Vertebrates. In particular Surface. Such as through the use of a patch, a bandage contact embodiments, the Subject is a human. lens and tarSorrhaphy. 0014. A “wound” is defined herein to refer to a break or 0006 Although many patients respond to conventional disruption in the continuity of cells of a tissue Surface of a subject. Any cause of disruption of the continuity of the cells therapies, there remains a significant Subset of patients who of a tissue surface of a subject is contemplated by this defi fail conventional therapies. Failure of the wound to heal can nition. For example, the disruption may be caused by Surgery be extremely frustrating for both patient and physician. or trauma. Other causes of wounds include infections and 0007 New therapies are under investigation, and include inflammation. The surface of the organ may be the surface of nerve growth factors, the use of fetal cord blood, the use of the eye. Such as the corneal Surface or the conjunctival Sur amniotic membrane, and the use of limbal stem cell grafting face. (reviewed in www.uveitis.org/medical/articles/clinical/ 00.15 Examples of cells that make up the tissue surface growth.html). It is not yet known whether any of these mea include epithelial cells and mucosal cells. The disruption of sures will result in effective treatment of an ocular surface the cells that may up the tissue surface may either involve the wound. Thus, there is the need for more effective treatments full-thickness of the cell layer or may be involve only a of ocular surface wounds. portion of the cell layer. For example, included in the defini 0008 Mast cells are a type of cell that is known to be tion of “wound is a corneal epithelial defect that is full involved in inflammatory responses. A wide variety of stimuli thickness (i.e., a defect to the basement membrane of the may cause the activation of mast cells, and Subsequently corneal), or a partial disruption of the corneal epithelial layer, cause them to migrate to a particular location and/or to and includes corneal abrasions and corneal ulcers. undergo de-granulation. These stimuli may be immunologic 0016. In a particular embodiment, the wound is a corneal (such as antibodies or allergens) or non-immunologic (Such wound. For example, the corneal wound may further be defined as a corneal epithelial defect, a recurrent corneal as chemical agents) in nature. erosion, or a corneal ulcer. Included within the definition of 0009. The precise role of mast cells in wound healing is corneal epithelial defect is punctate epithelial keratopathy. unknown. Understanding the role of mast cells, if any, in The corneal epithelial defect may be due to any cause or be wound healing is made difficult by the fact that mast cell types associated secondarily with any ophthalmic condition. For differ within species. Further, mast cell populations exist example, the corneal epithelial defect may be caused by within the same species which differ in phenotype, biochemi trauma (Surgical or nonSurgical), infection (e.g., bacterial, cal properties, functional responses, and pharmacological viral, or fungal keratitis), inflammation (e.g., secondary to responses. For example, one Subtype of mast cells, MC, is allergic conjunctivitis, giant papillary conjunctivitis, Vernal known to be present in the skin and conjunctiva, but not in conjunctivitis, atopic keratoconjunctivitis), chemical or ultra other tissues. violet exposure of the cornea, or dry eye syndrome. The 0010 Chymase, a serine protease found in MC, mast defect may also be associated with the use of preserved topi cells, is an important marker for human mast cells as well as cal products, keratitis, blepharitis, uveitis, tear film instabil a mediator of inflammation and matrix remodelling (Buckley ity, or be iatrogenic. In further particular embodiments, the et al., 1999). It has been suggested that skin mast cells and corneal epithelial defect is a persistent corneal epithelial mast cell chymase participates in the healing process as well defect that has been unresponsive to conventional therapy. US 2008/O 139531 A1 Jun. 12, 2008 0017. In another embodiment, the wound is a conjunctival methanol, 8-fluoro-6,11-dihydro-11-(1-methyl-4- wound. For example, the conjunctival wound may be a wound piperidinylidene)-5H-imidazo[2,1-b3RE 11-(1-methyl-4-piperidinylidene)-5H-imidazo[2.1- benzazepine, 6,11 associated with ophthalmic Surgery, trauma, or conjunctival b3 benzazepine-3-carboxaldehyde, 6,11-dihydro-11-(1- disease such as allergic conjunctivitis, giant papillary con methyl-4-piperidinylidene)-5H-imidazo[2,1-b3 junctivitis, Vernal conjunctivitis, or atopic keratoconjunctivi benzazepine-3 carboxylic acid, 7-fluoro-6,11-dihydro-11-(1- tis. methyl-4-piperidinylidene)-5H-imidazo[2,1-b3 benzazepine, 4-(8-fluoro-5,6-dihydro-11H-imidazo[2.1-b 0.018. In further embodiments, the wound is a skin wound. 3)benzazepin-11-ylidene)-1-piperidinepropanoic acid The skin wound may be the result of trauma (Surgical or dihydrate, methyl cis-11-(3-dimethylaminopropylidene)-6, nonsurgical), infection, inflammation, burn, or primary skin 11-dihydrodibenz beloxepin-2-carboxylate, methyl trans disease. Examples of primary skin diseases include blistering 11-(3-dimethylaminopropylidene)-6,11-dihydrodibenzbe oxepin-2-carboxylate.