Effect of pentoxifylline on the regeneration of rat testicular germ cells after heat shock

High temperature is an important factor for reproduction and can induce testicular degeneration. Pentoxifylline is a methylxanthine phosphodiesterase inhibitor with anti - inflammatory and anti - apoptotic properties. Considering the protective propert ies of pentoxifylline and the harmful effects of heat, the present study aimed to use pentoxifylline to reduce the damage induced by heat to the testis. Adult mal e Wistar rats were exposed to testicular heat shock (43ºC for 15 min) , treated with 50 or 100 mg/ k g of pentoxifylline and evaluated at 3, 7, 15, 30 and 60 days after heat shock. Pentoxifylline treatment did not change testicular weight, histomorphometrical parameters or plasma testosterone concentration. However, pentoxifylline inhibited germ cell apoptosis and reduced the severity of pathological lesions at 30 and 60 days after testicular heat shock. In conclusion, pentoxifylline treatment seem ed to inhibit pro - inflammatory and apoptotic mechanisms triggered by testicular heat shock, improving sper matogenesis regeneration.

Effect of pentoxifylline on the regeneration of rat testicular germ cells after heat shock

High temperature is an important factor for reproduction and can induce testicular degeneration. Pentoxifylline is a methylxanthine phosphodiesterase inhibitor with anti - inflammatory and anti - apoptotic properties. Considering the protective propert ies of pentoxifylline and the harmful effects of heat, the present study aimed to use pentoxifylline to reduce the damage induced by heat to the testis. Adult mal e Wistar rats were exposed to testicular heat shock (43ºC for 15 min) , treated with 50 or 100 mg/ k g of pentoxifylline and evaluated at 3, 7, 15, 30 and 60 days after heat shock. Pentoxifylline treatment did not change testicular weight, histomorphometrical parameters or plasma testosterone concentration. However, pentoxifylline inhibited germ cell apoptosis and reduced the severity of pathological lesions at 30 and 60 days after testicular heat shock. In conclusion, pentoxifylline treatment seem ed to inhibit pro - inflammatory and apoptotic mechanisms triggered by testicular heat shock, improving sper matogenesis regeneration.(AU)

Farmacodermia em um cão após administração de antibióticos do grupo betalactâmico: relato de caso / Pharmacodermia in a dog after administration of beta-lactam antibiotics: case report

A severe cutaneous reaction in a female dog after administration of penicillin and cephalexin is described, in which the main signs presented by the patient were fever, lack of appetite, and detachment of epidermis in the dorsal region of body.The established treatment was surgical debridement of the region, topical application of Aloe Vera with sugar, and systemic antibiotic therapy with ciprofloxacin, resulting in the recovery and wound closure in approximately 45 days.(AU)

Hemangiosarcoma of the nictitant membrane in a Brazilian Fila dog: case report / Hemangiosarcoma em membrana nictitante de cão da ração Fila Brasileiro: relato de caso

It was reported a case of a 9-year-old Brazilian Fila male dog that had been affected by a tissular formation of the nictitant membrane of the right eye with four months of evolution. Conjunctival hyperemia and edema, serosanguinolent secretion, and a conjunctival neoformation at the nictitant membrane were observed. Surgical exeresis of the neoformation was performed. Endothelial cells slightly differentiated and pleomorphic, with an intense vascular neoformation compatible to nictitant membrane hemangiosarcoma, were found at the histological exam.(AU)

Relata-se o caso de um cão, macho, da raça Fila Brasileiro, com nove anos de idade, acometido por neoformação tecidual na membrana nictitante do olho direito, com cerca de quatro meses de evolução. Realizou-se exame oftálmico rotineiro, a partir do qual se notaram hiperemia e edema conjuntivais, secreção ocular serossangüinolenta e neoformação saliente na conjuntiva da membrana nictitante. Realizou-se a exérese cirúrgica da neoformação. À histopatologia, encontraram-se células endoteliais pouco diferenciadas e pleomórficas que originavam intensa neoformação vascular, compatíveis com hemangiossarcoma da membrana nictitante.(AU)

Amastigota forms resembling Leishmania sp. on corneal ulceration in a dog: case report / Formas amastigotas compatíveis com Leishmania sp. em ulceração corneal de cão: relato de caso

One dog with visceral leishmaniasis is reported presenting cutaneous lesions, cachexia, and corneal ulceration. Parasitological and serological diagnoses were performed by exam of contents of the aspirative punction of the bone marrow and by immunofluorecence, respectively. Amastigota forms resembling Leishmania sp. were visualized by citology.(AU)

Relata-se o caso de um cão com leishmaniose visceral apresentando lesões cutâneas, caquexia e úlcera de córnea. Realizou-se o diagnóstico parasitológico e sorológico por meio de exame do material da medula óssea e por imunofluorescência indireta, respectivamente. A citologia da úlcera corneana, visibilizaram-se formas amastigotas compatíveis com Leishmania sp.(AU)

Microalterations in the third eyelid gland of dogs with keratoconjunctivits sicca secondary to distemper / Microalterações da glândula terceira pálpebra em cães com cinomose e acometido por ceratoconjuntivite seca

Keratoconjunctivitis sicca is characterized by qualitative or quantitative abnormalities in the aqueous component of the tear film and is frequent in dogs with distemper. Twenty-eight third eyelid glands of end-stage dogs that died from distemper were analyzed by light microscopy. Keratoconjunctivitis sicca was diagnosed based on ophthalmic findings regarding alterations in the ocular surface and by the Schirmer tear test. The excised glands were fixed in 10 percent buffered formalin and processed for embedding in paraffin. The blocks were cut into 4µm sections and the sections were stained with hematoxylin-eosin and Masson's trichrome. Analysis revealed tubuloacinar gland atrophy, thickening of connective tissue, and mild to intense inflammatory exudation mainly characterized by the presence of plasma cells and histiocytes and by compensatory hypertrophy of some glands. The glandular lumen was hypertrophied and contained shedded epithelial cells, polymorphonuclear cells and red blood cells, in addition to mucus.(AU)

Analisaram-se, à microscopia óptica, 28 glândulas da terceira pálpebra de cães, que morreram com cinomose. O diagnóstico de ceratoconjuntivite seca baseou-se nas alterações da superfície ocular e no teste da lágrima de Schirmer. A histologia, visibilizaram-se atrofia tubuloacina, espessamento do tecido conjuntivo e exudação inflamatória de leve a intensa com presença de plasmócitos, de histiócitos e por hipertrofia compensatória de algumas glândulas. O lume das glândulas encontrava-se hipertrofiado contendo células epiteliais descamadas, polimorfonucleares e hemácias, além de muco.(AU)

Ocular alterations in dogs naturally infected by Leishmania (Leishmania) chagasi / Alterações oculares em cães infectados naturalmente por Leishmania (Leishmania) chagasi

Ocular conditions, anti-Leishmania antibodies and total protein of the aqueous humor were studied in dogs naturally infected by Leishmania (Leishmania) chagasi. Fifty dogs were analyzed and assigned into two groups of 25 animals each. All animals were submitted to routine ophthalmic exam. Results showed that 76% of the affected animals presented ocular signs, being uveitis the predominant. The mean of total protein in the aqueous humor of animals with uveitis was higher (P<0.05) when compared to the mean of animals with other ocular signs or no clinical sign. The anti-Leishmania chagasi antibody values in plasma were superior to those found in the aqueous humor (P<0.05).(AU)

Estudaram-se as condições oculares, os anticorpos anti-Leishmania e os valores de proteína total no humor aquoso de cães infectados naturalmente por Leishmania (Leishmania) chagasi. Analisaram-se 50 cães, divididos em dois grupos de 25 animais. Todos os animais foram submetidos a exame oftálmico rotineiro. Os resultados mostraram que 76% dos cães infectados apresentaram sinais oculares, sendo a uveíte a alteração predominante. A média de proteína total no humor aquoso dos animais com uveíte foi maior (P<0,05), que a dos animais com outros sinais oculares ou sem qualquer sinal. Os valores de anticorpos anti-L. chagasi obtidos no plasma foram estatisticamente superiores aos encontrados no humor aquoso (P<0,05).(AU)

Criptococose em felino

A case of cryptococcosis in a cat refferred to the Hospital Veterinário da Universidade Federal Rural de Pernambuco is described. The cat was euthanized and the microscopic examination of a firm mass observed in the nasal cavity was accomplished. Cryptococcus sp. and a chronic inflammatory process was observed throughout the tissue.