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Dogs and cats
May Be Prescribed by Vets for:
Keratoconjunctivitis Sicca, Atopic dermatitis.
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Tacrolimus is one of a group of relatively new drugs called Calcineurin inhibitors. These drugs are anti-inflammatory, and immunosuppressive or immunomodulatory. The mechanism of action is through the inhibition of calcium-dependent pathways that effect the enzymatic action of Calcineurin. This, in turn, blocks the proliferation of T-lymphocytes and cytotoxic cells. When one reviews the human literature, Calcineurin inhibitors are investigated widely for use in atopic dermatitis and in organ transplant recipients. At the present time, veterinary use of tacrolimus is primarily for keratoconjuctivitis sicca in dogs and cats and immune-mediated dermatologic diseases.
Keratoconjunctivitis sicca due to decreased tear production is primarily an immune-mediated disease of the lacrimal glands. It is seen more commonly in dogs than in cats. Cyclosporine and tacrolimus are the two drugs most commonly used to stimulate tear production. Cyclosporine has been the standard drug for years although topical ophthalmic tacrolimus is thought to be considerably more effective; as a result it may be useful in animals that are refractory to cyclosporine. Animals with immune-mediated KCS will need to be on treatment for the rest of their lives.
Topical tacrolimus also may be useful in localized treatment of atopic dermatitis, pemphigus, lupus erythematosus complex, miliary dermatitis, and eosinophilic granuloma complex.
Only topical use of tacrolimus is recommended currently. There is not sufficient information regarding systemic use.
No information regarding drug interactions was found in the literature.
Dr. Barbara Forney is a veterinary practitioner in Chester County, Pennsylvania. She has a master's degree in animal science from the University of Delaware and graduated from the University of Pennsylvania School of Veterinary Medicine in 1982.
She began to develop her interest in client education and medical writing in 1997. Recent publications include portions of The Pill Book Guide to Medication for Your Dog and Cat, and most recently Understanding Equine Medications published by the Bloodhorse.
Dr. Forney is an FEI veterinarian and an active member of the AAEP, AVMA, and AMWA.
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