Histopatologia e imunoistoquímica do bulbo do olho de equinos (Equus caballus, Linnaeus, 1758) soropositivos ou soronegativos para leptospirose

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Endotélio da córnea e facoemulsificação em cães

This study aims, by a literature review, to evaluate the effects of the phacoemulsification surgery into the endothelial cells of the cornea, especially on dogs. The phacoemulsification is a surgical technique of cataract surgery, and presents a series of factors pre, trans and post operation that can affect the cornea endothelium. Knowing that the cornea transparency is essential to the preservation of the visual acuity, and that the endothelium cells do not demonstrate an adequate regeneration, it is important to the surgeon to be aware of these factors in order to avoid or to minimize them. Among then can be mentioned: previous diseases, surgical and chemical trauma, intra-ocular lens, uveitis etc. As consequence, a reduction on the number of endothelium cells and edema can be observed, which can lead to a loss of vision by definitive cornea opacity or to late visual recuperation

Manifestações oculares na leishmaniose

The Canine Visceral Leishmaniasis is a chronic disease of endemic character, caused by Leishmania Chagasi in Americas. The inoculation of the promastigote form in the individual triggers a local and widespread immune reaction with formation of inflammatory infiltrates and deposition of immune complexes in tissues. Initial clinical symptoms of the disease are: weight reduction, hepatomegaly, splenomegaly and, according to the disease chronicity, signs such as alopecia, erythema, onychogryphosis, arthropathies, renal diseases, pyoderma, seborrheic dermatitis, muscle atrophy and Ocular diseases. Ocular diseases are often reported and are result of the direct parasitism or immune-mediated mechanisms caused by the disease. The Leishmania spp have greater affinity for the anterior segment, so that anterior uveitis is one of the most frequently diagnosed injuries. Blepharitis diffuse and Keratoconjunctivitis also appear as important ocular changes. In histological section, inflammatory infiltrates and macrophages with amastigote form are observed in all ocular tissues, with the exception of the retina and optical nerve. In the clinical analysis and disease diagnosis, should be considered the differential diagnosis, such as Ehrlichiosis and systemic hypertension, because these may cause some ocular manifestations similar to those observed in leishmaniasis

Aspectos gerais da Toxoplasmose

One tthird of the world population is infected with Toxoplasma gondii, in most cases, asymptomatic. There are records of infection in birds and mammals, including the dog. Systemic clinical signs of canine toxoplasmosis are variable, however, the animals may manifest ocular signs: anterior mononuclear uveitis, retinitis, choroiditis, extraocular myositis, scleritis and optic neuritis. This paper aims to demonstrate through bibliography revision some aspects of canine toxoplasmosis as clinical signs focusing on the ocular manifestations, potential zoonotic disease and the importance of public health