Hypothyroidism is the most common endocrine disorder in dogs. The present paper puts on record various ailments associated with primary hypothyroidism caused by thyroxine (T4) deficiency and peripheral disorders in euthyroid dogs, which mimic hypothyroidism. The study undertaken on 10,172 dogs presented at the clinics with skin and coat incongruity, revealed clinical manifestations suggestive o...

Ocular involvement in lymphoma is a relatively rare condition that can result from a primary intraocular lymphoma or an intraocular manifestation of systemic lymphoma. Lymphoma manifestations frequently masquerade as other more benign intraocular conditions including allergic or infectious conjunctivitis, uveitis, multiple evanescent white dot syndrome, acute retinal necrosis, or herpetic retin...

Synaptic plasticity in the cerebellum is thought to contribute to motor learning. In particular, long-term depression (LTD) at parallel fiber (PF) to Purkinje neuron (PN) excitatory synapses has attracted much attention of neuroscientists as a primary cellular mechanism for motor learning. In contrast, roles of plasticity at cerebellar inhibitory synapses in vivo remain unknown. Here, we have i...

Objective: To study ocular manifestations in patients who were on long-term use of chlorpromazine. Methods: A retrospective observational case study was made. Three patients, who were diagnosed as Schizophrenia and on long-term use of chlorpromazine for more than 20 years, were examined retrospectively. The examinations included clinical history, physical examination, slit-lamp biomicroscopy, a...

PURPOSE S-1 is an oral antineoplastic agent that contains a prodrug of 5-fluorouracil and has adverse effects on skin, alimentary tract mucosa, and the ocular surface. We investigated the effects of S-1 on the corneal epithelium by in vivo confocal microscopy and histopathologic analysis. METHODS Twelve patients with eye problems related to S-1 treatment participated in the study. Twenty eyes...

The familiar amyloid polyneuropathy (FAP) is a rare autosomal-dominant systemic amyloidosis. Amyloid deposition occurs more frequently and extensively in the vitq. The increase in intraocular pressure (IOP) is a result of deposition of transthyretin (TTR) in trabecular meshwork. Rarely, the amyloid deposition in anterior segment can be more exuberant than in posterior segment. A 42 years old ma...

Extraocular muscles are primarily involved in many mitochondrial diseases, but no reports exist regarding the morphological appearance of the muscles in cases of long-standing ocular myopathies. For this reason, muscle samples obtained from surgery in a sporadic case of chronic progressive external ophthalmoplegia (CPEO) were used for ultrastructural investigation and molecular analysis of mito...

PURPOSE Mast cells are classically found in ocular tissues within the conjunctiva, choroid, and iris. The aim of this study was to examine their distribution in the optic nerve and its meninges. METHODS Sixty-six human optic nerves were studied from normal subjects at autopsy, fetuses aborted for chromosomal abnormalities, and from enucleation specimens of patients with a variety of inflammat...

The protein product of the ocular albinism type 1 gene, named OA1, is a pigment cell-specific G protein-coupled receptor exclusively localized to intracellular organelles, namely lysosomes and melanosomes. Loss of OA1 function leads to the formation of macromelanosomes, suggesting that this receptor is implicated in organelle biogenesis, however the mechanism involved in the pathogenesis of the...

Eight children with the fetal alcohol syndrome are described with ocular anomalies. They all had a strong history of maternal alcohol abuse throughout pregnancy, especially in the first trimester. All the children had eye abnormalities. These included external eye lesions, Peters' anomaly, lens opacification, ocular motility disorders, and optic nerve hypoplasia. Fetal alcohol syndrome is chara...