Polineuropatia motora em cão adulto / Motor polyneuropathy in an adult dog

Background: Nonambulatory flaccid tetraparesis can be the result of diseases of the peripheral nervous system and it is characterized by generalized lower motor neuron (LMN) signs, as weakness, tetraparesis/tetraplegia, decreased muscle tone and reflexes. The term polyneuropathy is used for dysfunction of multiple peripheral nerves. In Brazil, there are several etiologies for polyneuropathy in dogs, such as acute idiopathic polyradiculoneuritis, botulism and myasthenia gravis. Toxoplasma gondii is an uncommon cause of LMN diseases in dogs. The aim of this report was to describe a case of flaccid tetraplegia toxoplasmosis in an adult dog with a Toxoplasma gondii serology with a markedly elevated IgG titer of 1:4096. Case: A 4-year-old intact mongrel male dog, weighing 19.6 kg, was referred to the Veterinary Medical Teaching Hospital of the Universidade Estadual de Londrina (UEL) with a 5-day history of weakness that progressed to tetraparesis. Physical examination revealed no significant changes other than the dull and unkempt coat. Neurologic examination revealed severe tetraparesis that was worse in the pelvic limbs, with decreased muscle tone in all four limbs. Postural reactions and the interdigital reflex were absent in all four limbs, as was the patellar reflex, but pain perception was present. There were no clinical signs of dysfunction on examination of the cranial nerves. Laboratory tests were performed, and creatine kinase was elevated (819 U/L). Blood was drawn to look for antibodies to Toxoplasma gondii and Neospora caninum class IgG using the indirect immunofluorescence technique. The antibody titer for Toxoplasma gondii (IgG) was 1:4096. A chest radiograph was performed to look for megaesophagus, and a pulmonary pattern suggestive of mild diffuse pneumonia was observed. Treatment was performed with sulfamethoxazole and trimethoprim, and the dog's condition improved slightly. Discussion: Based on lower motor neuron findings, the neurologic lesion was localized in the nerve roots, peripheral nerves, neuromuscular junctions, or muscles. The most important diseases in the list of differential diagnoses were immune-mediated or infectious polyradiculoneuritis (toxoplasmosis, neosporosis), myasthenia gravis, toxic polyneuropathy (botulism, chronic organophosphate poisoning), and paraneoplastic polyneuropathy. Among these differential diagnoses, polyradiculoneuritis is one of the most common. It is an idiopathic inflammatory disease. Exposure to raccoon saliva (in the U.S.), vaccination, or infection have been proposed as precipitating causes, but the triggers of this disease remain unknown. Serology for neosporosis was negative, while IgG titers for toxoplasmosis were 1:4096. In a previous study, dogs with acute polyradiculoneuritis were more likely to have T. gondii IgG serum antibody titers than dogs without neurologic signs. Infection with the protozoa T. gondii and N. caninum can cause intense polyradiculoneuritis in dogs accompanied by myositis, especially in puppies. One treatment trial was based on the administration of sulfonamide-trimethoprim with pyrimethamine, whose efficacy in the treatment of toxoplasmosis in dogs has also been reported in the literature. Neurologic deficits improved slightly, and there is a possibility that certain signs may not disappear completely because of the permanent damage caused by inflammation of the nervous system, as observed in the present case. The case had the limitation that it was not possible to perform other laboratory tests to demonstrate histopathologically the presence of Toxoplasma gondii organisms in muscles or nerves. Recovery of normal function is less likely in protozoan polyradiculoneuritis than in noninfectious polyradiculoneuritis. Thus, in the present case, the main suspicion was polyradiculoneuritis secondary to toxoplasmosis. Although it is a rare condition, it is important to consider toxoplasmosis in dogs with LMN-type tetraparesis or tetraplegia.

Linfoma em cão da raça cane corso: relato de caso / Lymphoma in a cane corso dog: case report / Linfoma en un perro cane corso: relato de un caso

Os linfócitos são células de defesa do organismo que funcionam como barreira contra infecções e células cancerígenas, elas circulam pelo sistema linfático e estão presentes por todo o organismo do animal, podem se proliferar de forma maligna, caracterizando o linfoma. Acometem em sua maioria, cães de raças de grande porte, animais de meia idade e idosos. Sendo uma doença de etiologia desconhecida, vários fatores podem contribuir para sua evolução, como deficiências autoimunes, bem como hábitos alimentares ao longo da vida do animal, ou até por predisposição genética. O presente relato de caso, tem o objetivo de mostrar a evolução gradual da doença, quais sinais clínicos o animal poderá apresentar, e como os exames laboratoriais podem nos auxiliar em seu diagnóstico.(AU)

The lymphocytes are defense cells of the body that act as a barrier against infection and cancer cells, they circulate through the lymphatic system and are present throughout the animal's body, and can proliferate in a malignant way, characterizing the lymphoma. They mostly affect large breed dogs, middle-aged and elderly animals. Being a disease of unknown etiology, several factors may contribute to its evolution, such as autoimmune deficiencies, as well as food habits throughout the animal's life, or even genetic predisposition. The present case report has the objective of showing the gradual evolution of the disease, which clinical signs the animal may present, and how laboratory tests can help us in its diagnosis.(AU)

Los linfocitos son células de defensa del organismo que actúan como barrera contra infecciones y células cancerígenas, circulan por el sistema linfático y están presentes en todo el organismo del animal, pudiendo proliferar de forma maligna, caracterizando el linfoma. Afectan sobre todo a perros de razas grandes, animales de mediana edad y ancianos. Siendo una enfermedad de etiología desconocida, varios factores pueden contribuir a su evolución, como deficiencias autoinmunes, así como hábitos alimentarios a lo largo de la vida del animal, o incluso predisposición genética. El presente caso clínico tiene como objetivo mostrar la evolución gradual de la enfermedad, qué signos clínicos puede presentar el animal y cómo las pruebas de laboratorio pueden ayudarnos en su diagnóstico.(AU)

Toll-like receptor 9 polymorphisms in brazilian patients with systemic lupus erythematosus: a pilot study / Polimorfismos do receptor toll-like 9 em pacientes brasileiros com lúpus eritematoso sistêmico: um estudo piloto

Toll-like receptor 9 (TLR9) is an important component of the innate immune system and have been associated with several autoimmune diseases, such as Systemic Lupus Erythematosus (SLE). The aim of this study was to investigate polymorphisms in TLR9 gene in a Brazilian SLE patients group and their association with clinical manifestation, particularly Jaccoud’s arthropathy (JA). We analyzed DNA samples from 204 SLE patients, having a subgroup of them presenting JA (n=24). A control group (n=133) from the same city was also included. TLR9 single nucleotide polymorphisms (SNPs) (−1237 C>T and +2848 G>A) were identified by sequencing analysis. The TLR9 gene genotype frequency was similar both in SLE patients and the control group. In the whole SLE population, an association between the homozygosis of allele C at position −1237 with psychosis and anemia (p < 0.01) was found. Likewise, the homozygosis of allele G at position +2848 was associated with a discoid rash (p < 0.05). There was no association between JA and TLR9 polymorphisms. These data show that TLR9 polymorphisms do not seem to be a predisposing factor for SLE in the Brazilian population, and that SNPs are not associated with JA.

O receptor Toll-like 9 (TLR9) é um componente importante do sistema imunológico inato e tem sido associado a várias doenças autoimunes, como o Lúpus Eritematoso Sistêmico (LES). O objetivo deste estudo foi investigar polimorfismos no gene TLR9 em um grupo de pacientes brasileiros com LES e sua associação com a manifestação clínica, particularmente a artropatia de Jaccoud (JA). Foram analisadas amostras de DNA de 204 pacientes com LES, e um subgrupo com JA (n=24). Um grupo de controle (n=133) da mesma cidade também foi incluído. Os polimorfismos de nucleotídeos únicos TLR9 (SNPs) (−1237 C>T e +2848 G>A) foram identificados pela análise de sequenciamento. A frequência do genótipo genético TLR9 foi semelhante tanto em pacientes com LES quanto no grupo controle. Em toda a população de LES, foi encontrada associação entre a homozigose do alelo C na posição −1237 com psicose e anemia (p < 0,01). Da mesma forma, a homozigose do alelo G na posição +2848 foi associada a uma erupção cutânea discoide (p < 0,05). Não houve associação entre polimorfismos JA e TLR9. Esses dados mostram que os polimorfismos TLR9 não parecem ser um fator predisponível para o LES na população brasileira, e que os SNPs não estão associados ao JA.

Toll-like receptor 9 polymorphisms in brazilian patients with systemic lupus erythematosus: a pilot study / Polimorfismos do receptor toll-like 9 em pacientes brasileiros com lúpus eritematoso sistêmico: um estudo piloto

Toll-like receptor 9 (TLR9) is an important component of the innate immune system and have been associated with several autoimmune diseases, such as Systemic Lupus Erythematosus (SLE). The aim of this study was to investigate polymorphisms in TLR9 gene in a Brazilian SLE patients group and their association with clinical manifestation, particularly Jaccouds arthropathy (JA). We analyzed DNA samples from 204 SLE patients, having a subgroup of them presenting JA (n=24). A control group (n=133) from the same city was also included. TLR9 single nucleotide polymorphisms (SNPs) (−1237 C>T and +2848 G>A) were identified by sequencing analysis. The TLR9 gene genotype frequency was similar both in SLE patients and the control group. In the whole SLE population, an association between the homozygosis of allele C at position −1237 with psychosis and anemia (p < 0.01) was found. Likewise, the homozygosis of allele G at position +2848 was associated with a discoid rash (p < 0.05). There was no association between JA and TLR9 polymorphisms. These data show that TLR9 polymorphisms do not seem to be a predisposing factor for SLE in the Brazilian population, and that SNPs are not associated with JA.(AU)

O receptor Toll-like 9 (TLR9) é um componente importante do sistema imunológico inato e tem sido associado a várias doenças autoimunes, como o Lúpus Eritematoso Sistêmico (LES). O objetivo deste estudo foi investigar polimorfismos no gene TLR9 em um grupo de pacientes brasileiros com LES e sua associação com a manifestação clínica, particularmente a artropatia de Jaccoud (JA). Foram analisadas amostras de DNA de 204 pacientes com LES, e um subgrupo com JA (n=24). Um grupo de controle (n=133) da mesma cidade também foi incluído. Os polimorfismos de nucleotídeos únicos TLR9 (SNPs) (−1237 C>T e +2848 G>A) foram identificados pela análise de sequenciamento. A frequência do genótipo genético TLR9 foi semelhante tanto em pacientes com LES quanto no grupo controle. Em toda a população de LES, foi encontrada associação entre a homozigose do alelo C na posição −1237 com psicose e anemia (p < 0,01). Da mesma forma, a homozigose do alelo G na posição +2848 foi associada a uma erupção cutânea discoide (p < 0,05). Não houve associação entre polimorfismos JA e TLR9. Esses dados mostram que os polimorfismos TLR9 não parecem ser um fator predisponível para o LES na população brasileira, e que os SNPs não estão associados ao JA.(AU)

Treatment of chronic immunomediated thrombocytopenia with mesenquimal stem cells in dog: case report / Tratamento de trombocitopenia imunomediada crônica com células-tronco mesenquimais em cão: relato de caso

Immunomediated thrombocytopenia is a systemic metabolic disorder in which the platelet count falls below reference values, as the patient's immune system destroys them. The main clinical signs in thrombocytopenia are petechial, hemorrhages, ecchymoses and suffusions. Hematomas can also occur in coagulation disorders. The diagnosis is based on clinical findings and hematological examinations. The treatment consists of the use of corticosteroids and immunosuppressants, delaying cell destruction, and may last for months, not always obtaining a cure for the disease. The present work reports the use of therapy with allogeneic mesenchymal stem cells, derived from the adipose tissue of dogs, for the treatment of chronic immunomediated thrombocytopenia, with an evolution of more than one year, in a Pinscher dog. The alternative treatment showed a good evolution, keeping platelets within the reference values during the treatment, giving the patient quality of life and removing the need for continuous medication for homeostasis after treatment.

A trombocitopenia imunomediada é uma desordem metabólica sistêmica, na qual a contagem plaquetária fica abaixo dos valores de referência, pois o sistema imunológico do paciente a destrói. O principal sinal clínico na trombocitopenia são hemorragias, petequiais, equimoses e sufusões. Hematomas podem ocorrer também em alterações da coagulação. O diagnóstico baseia-se nos achados clínicos e nos exames hematológicos. O tratamento consiste na utilização de corticosteroides e imunossupressores, o que retarda a destruição celular, mas pode se prolongar por meses, nem sempre obtendo cura da doença. O presente trabalho relata a utilização da terapia com células-tronco mesenquimais alogênicas, oriundas do tecido adiposo de cães, para tratamento de trombocitopenia imunomediada crônica, com evolução de mais de um ano, em um cão da raça Pinscher. O tratamento alternativo revelou boa evolução, pois manteve as plaquetas dentro dos valores de referência durante o tratamento, o que proporcionou qualidade de vida ao paciente e tornou desnecessárias medicações de uso contínuo para a homeostase após o tratamento.

Toll-like receptor 9 polymorphisms in brazilian patients with systemic lupus erythematosus: a pilot study / Polimorfismos do receptor toll-like 9 em pacientes brasileiros com lúpus eritematoso sistêmico: um estudo piloto

Abstract Toll-like receptor 9 (TLR9) is an important component of the innate immune system and have been associated with several autoimmune diseases, such as Systemic Lupus Erythematosus (SLE). The aim of this study was to investigate polymorphisms in TLR9 gene in a Brazilian SLE patients group and their association with clinical manifestation, particularly Jaccoud's arthropathy (JA). We analyzed DNA samples from 204 SLE patients, having a subgroup of them presenting JA (n=24). A control group (n=133) from the same city was also included. TLR9 single nucleotide polymorphisms (SNPs) (−1237 C>T and +2848 G>A) were identified by sequencing analysis. The TLR9 gene genotype frequency was similar both in SLE patients and the control group. In the whole SLE population, an association between the homozygosis of allele C at position −1237 with psychosis and anemia (p < 0.01) was found. Likewise, the homozygosis of allele G at position +2848 was associated with a discoid rash (p < 0.05). There was no association between JA and TLR9 polymorphisms. These data show that TLR9 polymorphisms do not seem to be a predisposing factor for SLE in the Brazilian population, and that SNPs are not associated with JA.

Resumo O receptor Toll-like 9 (TLR9) é um componente importante do sistema imunológico inato e tem sido associado a várias doenças autoimunes, como o Lúpus Eritematoso Sistêmico (LES). O objetivo deste estudo foi investigar polimorfismos no gene TLR9 em um grupo de pacientes brasileiros com LES e sua associação com a manifestação clínica, particularmente a artropatia de Jaccoud (JA). Foram analisadas amostras de DNA de 204 pacientes com LES, e um subgrupo com JA (n=24). Um grupo de controle (n=133) da mesma cidade também foi incluído. Os polimorfismos de nucleotídeos únicos TLR9 (SNPs) (−1237 C>T e +2848 G>A) foram identificados pela análise de sequenciamento. A frequência do genótipo genético TLR9 foi semelhante tanto em pacientes com LES quanto no grupo controle. Em toda a população de LES, foi encontrada associação entre a homozigose do alelo C na posição −1237 com psicose e anemia (p < 0,01). Da mesma forma, a homozigose do alelo G na posição +2848 foi associada a uma erupção cutânea discoide (p < 0,05). Não houve associação entre polimorfismos JA e TLR9. Esses dados mostram que os polimorfismos TLR9 não parecem ser um fator predisponível para o LES na população brasileira, e que os SNPs não estão associados ao JA.

Aspectos da hemoplasmose em búfalos: revisão bibliográfica / Aspects of hemoplasmosis in buffaloes: literature review / Aspectos de la hemoplasmosis en búfalos: revisión de la literatura

Búfalos são animais rústicos que podem ser explorados para a produção de carne ou leite. Estes animais são susceptíveis a enfermidades que também acometem outras espécies de ruminantes, principalmente os bovinos. Entretanto, acredita-se que os bubalinos sejam mais resistentes a algumas doenças, mas ainda há poucos estudos epidemiológicos abrangendo doenças infecciosas como a hemoplasmose em búfalos. A hemoplasmose é causada por micoplasmas hemotrópicos ou hemoplasmas, que são bactérias gram-negativas causadoras de anemia hemolítica em hospedeiros imunocomprometidos. Mycoplasma wenyonii e 'Candidatus Mycoplasma haemobos' são as principais espécies de hemoplasmas que podem infectar búfalos. A transmissão da doença ocorre principalmente por meio de vetores artrópodes hematófagos ou por via iatrogênica. O diagnóstico de animais infectados é realizado por meio da Reação em Cadeia da Polimerase (PCR). Medidas de prevenção e controle são essenciais para o controle desta enfermidade nos rebanhos bubalinos.

Buffalo are rustic animals that can be exploited for meat or milk production. These animals are susceptible to diseases that also affect other species of ruminants, especially cattle. However, it is believed that buffalo are more resistant to some diseases, but there are still few epidemiological studies covering infectious diseases such as hemoplasmosis in buffaloes. Hemoplasmosis is caused by hemotropic mycoplasmas or hemoplasmas, which are gram-negative bacteria that cause hemolytic anemia in immunocompromised hosts. Mycoplasma wenyonii and 'Candidatus Mycoplasma haemobos' are the main hemoplasma species that can infect buffaloes. Transmission of the disease occurs mainly via hematophagous arthropod vectors or iatrogenically. The diagnosis of infected animals is made by Polymerase Chain Reaction (PCR). Prevention and control measures are essential for the control of this disease in buffalo herds.

Los búfalos son animales rústicos que pueden ser explotados para la producción de carne o leche. Estos animales son susceptibles de contraer enfermedades que también afectan a otras especies de rumiantes, especialmente al ganado vacuno. Sin embargo, se cree que los búfalos son más resistentes a algunas enfermedades, pero todavía hay pocos estudios epidemiológicos sobre enfermedades infecciosas como la hemoplasmosis en búfalos. La hemoplasmosis está causada por micoplasmas hemotrópicos o hemoplasmas, que son bacterias gram negativas que causan anemia hemolítica en huéspedes inmunodeprimidos. Mycoplasma wenyonii y 'Candidatus Mycoplasma haemobos' son las principales especies de hemoplasma que pueden infectar a los búfalos. La transmisión de la enfermedad se produce principalmente a través de vectores artrópodos hematófagos o de forma iatrogénica. El diagnóstico de los animales infectados se realiza mediante la reacción en cadena de la polimerasa (PCR). Las medidas de prevención y control son esenciales para controlar esta enfermedad en los rebaños de búfalos.

Effect of electrophysical resources on healing of neurotendinous injury in an experimental model of type I diabetes and kidney disease

Purpose: To evaluate and describe the effect of electrophysical resources laser therapy (LLLT), intravascular laser blood irradiation (ILIB), and cryotherapy on the healing process of neurotendinous injury, as well as possible systemic changes, in the experimental model of type 1 diabetes associated with kidney injury. Methods: The animals were randomized into four groups: G1) healthy control with untreated injury; G2) healthy control with injury and treatment; G3) disease control with untreated lesion; G4) disease with injury and treatment. Furthermore, the treated groups were divided into three, according to the type of treatment. All animals were induced to neurotendinous injury and treated according to the therapeutic protocols. Healing and inflammation were analyzed by semiquantitative histopathological study. Results: It was observed in sick animals treated with cryotherapy and ILIB reduction of inflammatory exudate, presence of fibroblasts and organization of collagen, when compared to the effects of LLLT. Moreover, there was reduction in glycemic levels in the group treated with ILIB. Conclusions: Cryotherapy promoted reduction in inflammatory exudate and organization of collagen fibers, in addition to the absence of signs of tissue necrosis, in the groups treated with and without the disease. ILIB therapy showed the same findings associated with significant reduction in glycemic levels in the group of diseased animals. The application of LLLT showed increased inflammatory exudate, low organization of collagen fibers and low sign of tissue degeneration and necrosis. This study in a model of associated diseases (diabetes and kidney disease) whose effects of electrophysical resources studied after neurotendinous injury allows us to verify histopathological variables suggestive of patients with the same comorbidities.

Discoid lupus erythematosus in dog / Lúpus eritematoso discoide em cão

Lupus erythematosus complex is an immune-mediated dermatological disease, mainly represented by the generalized and discoid forms. The last form described is milder, as it is limited to the appearance of lesions, usually on the face and in mucocutaneous regions. Its pathophysiology is considered multifactorial, however, continuous exposure to ultraviolet radiation seems to be very relevant to trigger and/or worsen clinical manifestations. DeÞ nitive diagnosis is obtained by histopathological analysis, and treatment is mainly based on immunosuppression and protection against ultraviolet radiation. The objective of this study was to report the case and clinical evolution of a mixed breed bitch, diagnosed with discoid lupus erythematosus. The bitch presented moderate desquamation, crusts and depigmentation restricted to the nasal plane. No other clinical or laboratory Þ ndings were evidenced in the screening tests. Upon conÞ rmation by histopathology, the initial therapy was started with oral prednisolone. The owners were also instructed to avoid exposure to sunlight, as well as to use topical protectors against ultraviolet radiation. The patient presented good response to therapy, showing remission of signs. Other sporadic recurrences were observed later, however, they were controlled only with topical corticosteroids, but always reinforcing the other precautions of environmental management. This work also addressed the risks, beneÞ ts and need to institute ongoing care to control discoid lupus erythematosus. Therapeutic success can vary among patients, as the intensity of the disease can be manifested in varying degrees. Therefore, in those individuals in which the condition is mild, it may be advantageous to opt for more conservative therapies in order to avoid side effects.(AU)

O complexo lúpus eritematoso é uma enfermidade dermatológica imunomediada, sendo principalmente representado pela forma generalizada e discoide. A última descrita é mais branda, pois se limita ao aparecimento de lesões geralmente em face e em regiões muco-cutâneas. Sua Þ - siopatogenia é considerada multifatorial, entretanto, a exposição contínua à radiação ultravioleta parece ser muito relevante para desencadear e/ou agravar as manifestações clínicas. O diagnóstico deÞ nitivo é obtido pela análise histopatológica, e o tratamento se baseia principalmente na imunossupressão e proteção contra a radiação ultravioleta. O objetivo deste trabalho foi relatar o caso e evolução clínica de uma cadela sem raça deÞ nida, diagnosticada com lúpus eritematoso discoide. A mesma apresentou moderada descamação, crostas e despigmentação restritas ao plano nasal. Nenhum outro achado clínico ou laboratorial foi evidenciado nos demais exames de triagem. Após conÞ rmado pela histopatologia, a terapia inicial foi instituída a partir da prednisolona por via oral. Os tutores também foram orientados a evitar exposição a luz solar, bem como, fazer a utilização de protetores tópicos contra a radiação ultravioleta. A paciente teve boa resposta à terapia, apresentando remissão dos sinais. Após este episódio, outras recidivas esporádicas foram observadas, entretanto, controladas apenas com corticoides tópicos, mas sempre reforçando os demais cuidados com o manejo ambiental. Este trabalho também abordou os riscos, benefícios e necessidade de instituir o cuidado contínuo para controle do lúpus eritematoso discoide. O sucesso terapêutico pode variar entre os pacientes, uma vez que a intensidade da doença pode ser manifestada em vários graus. Portanto, naqueles indivíduos em que o quadro é brando, pode ser vantajoso optar por terapias mais conservadoras, a Þ m de evitar seus efeitos colaterais.(AU)

Polymyositis associated with brainstem signs in a dog

Background: Polymyositis is a generalized inflammatory myopathy which can lead to rhabdomyolysis. This affection may have several origins, including degenerative, metabolic, autoimmune, infectious, inflammatory, ischemic, traumatic, by drug use, induced by toxins and also of idiopathic origin. Diagnosis is made with seric dosage, electrodiagnostic tests and muscle biopsy. Lesions in the rostral oblong medulla may affect the central vestibular system, and there may be signs such as opisthotonos, nystagmus, and strabismus. The aim of this report is to describe a case of a mixed breed dog with manifestation of polymyositis associated with brainstem signs of probable idiopathic origin. Case: A 5-year-old mixed breed male dog was attended with opisthotonos episodes for 2 days, and pelvic limbs extension and thoracic limbs flexion that lasted 10 to 20 min at intervals of approximately 1 h. The animal was anorexic and had also presented one episode of emesis. Upon neurological examination, ventromedial strabismus and Horner's syndrome was observed on the right side, besides vertical nystagmus, flaccid tetraparesis and absence of proprioception in the four limbs. Biochemical analyses revealed creatine kinase (CK) increased (2,433.9 UI/L - reference: 1.5-28.4 UI/L), and urinalysis showed dark color and presence of occult blood without, however, erythrocyturia. Electrocardiogram (ECG) showed QS wave and deviation of the electrical axis. Treatment with prednisolone (1 mg/kg, BID), phenobarbital (2 mg/kg, BID), maropitant citrate (1 mg/kg in 2 doses), and crystalloid fluid therapy (50 mL/kg/day) were prescribed. On the 4th day, the dog was more active and feeding without a tube, so it recommended keep the treatment at home. On the 10th day, the animal had proprioception present on the 4 limbs and normorexia. Biochemical analyses and urinalysis showed no alterations, but normochromic normochromic anemia with thrombocytopenia and leukocytosis by neutrophilia showed in blood count exam. PCR to Ehrlichia canis, Hepatozoon sp., and Babesia canis resulted negative. On the 15th day, blood count, biochemical analyses and urinalysis showed no alterations. Neurological examination revealed only positional vertical nystagmus. which remained as a sequel. Discussion: Polymyositis may be accompanied by rhabdomyolysis, characterized by acute muscle necrosis, increased CK and myoglobinuria. The animal had polymyositis of acute onset, with myoglobinuria and elevated CK values, whose presentation included myalgia and muscle weakness. In humans, polymyositis is accompanied by changes in electrocardiographic tracing without clinical alterations. In dogs, the first report that showed cardiac involvement was compatible with myocarditis. The changes in ECG in the present case was attributed to failure in myocardial electrical conduction. The patient also showed signs of brainstem and central vestibular system injuries. Stress myopathy, intoxication, snakebite, infectious, and metabolic diseases were discarded leading to a clinical suspicion as idiopathic origin. Similar to a published case, the patient of this report received symptomatic and supportive treatment, being discharged from the hospital 20 days after the onset of clinical signs. Thus, polymyositis may be accompanied by signs indicative of brainstem injury. Patients with rhabdomyolysis require intense monitoring due to the high risk of developing acute renal failure. Since no causative agent was identified, symptomatic treatment combined with the prevention of possible complications were fundamental for the maintenance of the animal's life.

Anemia hemolítica imunomediada medicamentosa em uma cadela / Immune-mediated hemolytic anemia in a bitch triggered by drugs

Background: Immune-mediated hemolytic anemia (IMHA) is characterized by an autoimmune response with production of auto-antibodies and destruction of erythrocytes resulting in anemia. Primary IMHA is referred to a condition when the cause is unknown (idiopathic), whereas secondary IMHA involves changes in red blood cells caused by the action of drugs, neoplasms, or infectious diseases. The diagnosis can be made through changes in the blood count, usually of a regenerative character, Coombs test, and autoagglutination test. The present study aimed to report a case of drug-induced hemolytic anemia, with emphasis on the clinical signs, diagnostic methods, and treatment, in a female dog. Case: A 9-year-old mixed-breed bitch weighing 29.6 kg was referred to the Veterinary Medical Teaching Hospital (HCVUFRGS) with a previous diagnosis of gallbladder mucocele that was unresponsive to clinical treatment. After laboratory tests, cholecystectomy was performed, and the procedure required conversion from laparoscopic to open cholecystectomy. Therapy included administration of amoxicillin, dipyrone, tramadol hydrochloride, and meloxicam. Three days after surgery, the dog presented with apathy, lethargy, hyporexia, and a pale and subicteric mucosa. The patient developed hypochromic macrocytic anemia with reticulocytosis, spherocytosis, anisocytosis, and leukocytosis with neutrophilia. The result of the autoagglutination test was positive, confirming the diagnosis. All medications were suspended, and immunosuppressive treatment with dexamethasone was included, with a subsequent switch to prednisolone. After 10 days of treatment, the patient experienced significant improvement, and therapy was discontinued. Discussion: Based on the patient's history, the cause of the IMHA was secondary to drug administration, and it is not possible to distinguish if it was due to one or a combination of drugs, as they were all started and stopped simultaneously. The patient had hypothyroidism, which may have contributed to the production of antibodies against TSH receptors, blocking the hormone's action, thereby causing tissue damage due to T cell-mediated cytotoxicity and the effect of cytokines. The pale and subicteric mucosa, apathy, weakness, lethargy, exercise intolerance, and dyspnea resulted from extravascular hemolysis and bilirubin released from erythrocyte rupture with a subsequent decrease in the number of red blood cells, leading to oxygen transport deficiency. The diagnosis is based on the blood count and results of autoagglutination supported by the response to immunosuppressive therapy. Anemia results in increased production and release of precursor cells from the bone marrow, accompanied by reticulocytosis and increased mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentration (MCHC). The treatment of IMHA consists of supportive care and immunosuppressive therapy with corticosteroids to ensure suppression of the immune system, preventing response against erythrocytes. Initially, tramadol hydrochloride, dipyrone, and amoxicillin with potassium clavulanate were suspended to interrupt the cause of IMHA, and administration of dexamethasone in an immunosuppressive dose was started. Therefore, it is important to include drug-induced IMHA in the differential diagnosis of patients who present with anemia after using medications. Early diagnosis, initiation of therapy, and adequate care were important factors for the recovery of the animal.

Treatment of discoid lupus erythematosus in a dog with human intravenous immunoglobulin

Background: Discoid lupus erythematosus (DLE) is a common canine autoimmune skin disease, in which systemic manifestations are absent. Skin Lesions are usually present on the nasal planum, and characterised by erythema, depigmentation, erosion, ulceration, and crusting. The diagnosis is based on histopathological results, which should demonstrate lymphoplasmacytic lichenoid-interface dermatitis. Human intravenous immunoglobulin (hIVIg) has been used in veterinary medicine to treat cutaneous diseases including erythema multiforme, PF, and severe adverse cutaneous drug reactions. In human medicine, it has been effective to treat DLE. This report firstly describes the clinical response to hIVIg in a dog with DLE resistant to common immunosuppressive drugs. Case: A 5-year-old, intact female Shih Tzu presented with a 1-month history of slowly progressive black crusting on the nasal planum, chin, and claw. Based on the results of a dermatologic examination, superficial pyoderma was diagnosed. The skin lesions did not improve during and after anti-infective treatment. After removing the crusts, a skin biopsy was obtained from the muzzle. Histopathology of lesional skin biopsy specimens revealed lymphoplasmacytic interface dermatitis at the dermoepidermal junction. Microscopic examination also revealed vacuolar changes and pigmentary incontinence of the basal layer as a lichenoid tissue reaction. No mites or fungi were detected on the skin section. The absence of acantholytic cells excluded pemphigus foliaceus, which is also characterised by the lesions of the nasal planum. Based on the distribution of the lesions, histopathology and exclusion of other dermatoses, the dog was diagnosed with DLE. The skin lesions temporarily improved after treatment with prednisolone (2 mg/kg PO q12h). However, after tapering the dose of prednisolone, new black crusts developed on the nasal planum and claw. Although the dog was successively treated with other immunosuppressive drugs, including azathioprine, cyclosporin with dexamethasone, and mycophenolate mofetil, black crusts still remained. Due to the low efficacy of these immunosuppressive drugs, hIVIg was administered at 0.5 g/kg once daily for 4 days, for a total dose of 2 g/kg. During hIVIg administration, the crusted lesions gradually improved. After the hIVIg administration, the dog was treated with prednisolone (1 mg/kg PO q12h). The lesions were almost in complete remission at 21 days after an additional application of prednisolone. The skin lesions did not recur, and the treatment was eventually discontinued after 6 weeks of additional prednisolone application. Discussion: The standard treatment of canine DLE includes glucocorticoids, and second-line immunosuppressive drugs, such as azathioprine and cyclosporine, are usually added in cases resistant to steroids. This case suggests that hIVIg may be beneficial as an adjunctive treatment option for canine DLE, especially when the application of standard immunosuppressive drugs is limited due to adverse effects or low efficacy. There is evidence from several studies that the steroid-sparing effect of hIVIg is significant in human patients. In the current case, the effective dose of prednisolone was reduced to 2 mg/kg/day after hIVIg administration, and prednisolone therapy was finally discontinued completely. The hIVIg appears to lower the daily steroid dose requirement in this dog.

Penfigoide bolhoso em cão / Bullous pemphigoid in a dog

Background: In dogs, bullous pemphigoid (BP) is a subepithelial autoimmune disease, a rare dermatopathy in the clinicalroutine. BP is characterized by formation of vesicles and subepidermal blisters that result from dissolution of the dermalepithelial junction. Clinical signs of BP usually include severe dermatological alterations with a variable prognosis. Theaim of this work is to report a case of BP in a dog to contribute information for diagnosis, and to present clinical andpathological aspects that emerge during development of BP.Case: An adult male mongrel dog exhibited hyperemic, exudative, crusty lesions on the lip commissure and periocularareas. Results from laboratory tests were normal. Results from parasitological and mycological tests on skin scrapingswere negative. Imprint cytology of the crusts revealed presence of gram-positive cocci bacteria. In the histopathologicalanalysis of punch biopsy material, the epidermis was detached from the dermis, leading to formation of vesicles. Therewere inflammatory infiltrates containing neutrophils, eosinophils, and high amounts of fibrin, and areas of multifocalorthokeratotic hyperkeratosis. Multifocal infiltrates containing lymphocytes, histiocytes, and plasma cells were observedon the superficial portions of the dermis, which indicated a diagnosis of BP. After the definitive clinical diagnosis, theanimal was treated with enrofloxacin (Baytril Flavour®; 5 mg/kg once a day for 10 days), and prednisolone (Prediderm®;2 mg/kg once a day until further instructions). On the follow-up visit, 15 days later, the clinical picture had improved, andthe lesions had decreased. Continuity of the treatment was prescribed, along with a gradual decrease in the corticoid dose.The dose of prednisolone was initially reduced to 1 mg/kg once a day, and later to 0.5 mg/kg until improvement of theclinical status of the patient. Remission of the lesions was observed 13 weeks later...

Penfigoide bolhoso em cão / Bullous pemphigoid in a dog

Background: In dogs, bullous pemphigoid (BP) is a subepithelial autoimmune disease, a rare dermatopathy in the clinicalroutine. BP is characterized by formation of vesicles and subepidermal blisters that result from dissolution of the dermalepithelial junction. Clinical signs of BP usually include severe dermatological alterations with a variable prognosis. Theaim of this work is to report a case of BP in a dog to contribute information for diagnosis, and to present clinical andpathological aspects that emerge during development of BP.Case: An adult male mongrel dog exhibited hyperemic, exudative, crusty lesions on the lip commissure and periocularareas. Results from laboratory tests were normal. Results from parasitological and mycological tests on skin scrapingswere negative. Imprint cytology of the crusts revealed presence of gram-positive cocci bacteria. In the histopathologicalanalysis of punch biopsy material, the epidermis was detached from the dermis, leading to formation of vesicles. Therewere inflammatory infiltrates containing neutrophils, eosinophils, and high amounts of fibrin, and areas of multifocalorthokeratotic hyperkeratosis. Multifocal infiltrates containing lymphocytes, histiocytes, and plasma cells were observedon the superficial portions of the dermis, which indicated a diagnosis of BP. After the definitive clinical diagnosis, theanimal was treated with enrofloxacin (Baytril Flavour®; 5 mg/kg once a day for 10 days), and prednisolone (Prediderm®;2 mg/kg once a day until further instructions). On the follow-up visit, 15 days later, the clinical picture had improved, andthe lesions had decreased. Continuity of the treatment was prescribed, along with a gradual decrease in the corticoid dose.The dose of prednisolone was initially reduced to 1 mg/kg once a day, and later to 0.5 mg/kg until improvement of theclinical status of the patient. Remission of the lesions was observed 13 weeks later...(AU)

Perfil clínico e laboratorial de cadelas sororeativas para erliquiose tratadas em um Hospital Veterinário Universitário em Niterói, Estado do Rio de Janeiro, Brasil / Clinical and laboratory profile of dogs seroreactive to ehrlichiosis treated at the Veterinary Medical Teaching Hospital in Niterói, State of Rio de Janeiro, Brazil

Ehrlichiosis is a tick-borne disease highly prevalent in Brazil, and is relevant in canine clinical practice due to its high morbidity and mortality. Its clinical signs are nonspecific and its phases are acute, lasting 2 to 4 weeks; subclinical, i.e., asymptomatic; and chronic, resembling an autoimmune disease. The purpose of this study was to identify the occurrence of reactivity to Ehrlichia canis of bitches treated at the Veterinary Medical Teaching Hospital of the Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil, based on serological examination by iELISA, and to compare the hematological, biochemical, urinary protein-creatinine and urinary density profiles of reactive and non-reactive animals. This study involved solely bitches, regardless of breed, starting at 1 year of age. One hundred and thirty bitches, 1 to 16 year-old (mean age 7.02 ± 4.00), weighing 1.5 to 50 kg (mean weight 12.12 ± 10.65) were subjected to clinical examination and abdominal ultrasound. Complete blood count, biochemical measurements, urinalysis and serology for E. canis were also performed. The serum was used in the iELISA to identify immunoglobulin G (IgG), using a canine Ehrlichia Imunotest® diagnostic kit (Imunodot®, Jaboticabal, SP, Brazil) according to the manufacturer's instructions. Sixty animals (46.20%) were reactive to E. canis. According to their owners, only 5 (8.3%) of the 60 seroreactive animals had a history of tick-borne disease. The most common profile was that of mixed breed animals living with their owners, older than 7 years, who had not been treated preventatively with specific drugs against ectoparasites. Laboratory tests showed significant differences between groups in terms of total protein (TP), and calcium and urinary protein-creatinine ratio (UPC). TP and UPC were elevated in the non-reactive group, while the only significant change in the reactive group was mild hypocalcemia. In this study, 30% (18/60) of the bitches were seroreactive to E. canis and had hypocalcemia. Of these, 50% (9/18) had a UPC above 0.5. Furthermore, 66.7% (12/18) of this group with hypocalcemia also showed urine density (UD) of less than 1024. Among these 18 bitches, 5 had both alterations, i.e., UPC > 0.5 and UD < 1024. In this study, a high prevalence of bitches seroreactive to Ehrlichia canis was observed, despite the absence of clinical and/or laboratory signs indicative of the disease. In the investigation of IgG class antibodies, it is not possible to determine the exact time of infection, and titers may remain high for a period of more than 11 months, even after treatment and elimination of the bacterium. The fact that most seroreactive bitches showed no symptoms compatible with the disease either before or during the study suggests that they were in the subclinical phase of ehrlichiosis. The main reason for calcium metabolism disorders is a phosphorus imbalance, a condition that occurs in kidney diseases. Isosthenuria reflects the kidney's inability to concentrate urine. This finding may be one of the first clinical manifestations of chronic kidney disease (CKD), especially in dogs. On the other hand, the UPC ratio may increase with the progression of CKD. The presence of hypocalcemia, isosthenuria and increased UPC associated with seroreactivity suggests that infection by E. canis may be associated with the onset of CKD. Veterinarians should keep in mind the complexity of the pathophysiology of ehrlichiosis to ensure the disease is not underdiagnosed in any of its phases, thereby ensuring the correct treatment is provided. Such awareness is expected to reduce the chronicity of the disease and underlying sequelae among dogs.(AU)

Pemphigus foliaceous in a dog - clinical and laboratorial assessment

Background: The pemphigus complex is defined as a group of blistering autoimmune diseases that affects skin and mucous membrane. Pemphigus foliaceous is the most common disease in this group, being characterized by the productionof autoantibodies against keratinocyte adhesion molecules. The treatment is based on the use of immunosuppressive drugsand requires constant monitoring to assess inflammatory control as well as side effects of therapy. Based on that, the aimof this study was to report the clinical and laboratorial follow-up of a canine with pemphigus foliaceous.Case: An 11-year-old male neutered mongrel dog, weighing 9.8 kg, was presented with a main complaint related to disseminated pruritus and lesions in face, trunk and limbs. Dermatological examination revealed meliceric crusts, epidermalcollars and diffuse pustules in inguinal, abdominal, face, limbs, ears and thoraco-lumbar regions. Cytological examinationwas performed, revealing inflammatory and acantholytic cells and absence of bacterial cells. Biopsy procedure revealedsubcorneal pustule with presence of epithelial acantholytic cells and neutrophils, compatible with canine pemphigusfoliaceous. Hemato-biochemical analysis revealed a leukocytosis due to increased neutrophil count. Systemic treatmentwith high dose of prednisolone (2.0 mg/kg) and azathioprine (2.5 mg/kg) was proposed, while topical therapy with a 3%chlorhexidine shampoo was used to prevent secondary bacterial infections. The patient improved the dermatological clinicalsigns, being possible to observe a reduction of systemic and tissue inflammatory process. After 90 days of therapy, therewas a partial loss of hair body coverage, associated with follicular lesions, and after 180 days of therapy it was possibleto notice a new hair mantle, without visible areas of inflammation...

Pemphigus foliaceous in a dog - clinical and laboratorial assessment

Background: The pemphigus complex is defined as a group of blistering autoimmune diseases that affects skin and mucous membrane. Pemphigus foliaceous is the most common disease in this group, being characterized by the productionof autoantibodies against keratinocyte adhesion molecules. The treatment is based on the use of immunosuppressive drugsand requires constant monitoring to assess inflammatory control as well as side effects of therapy. Based on that, the aimof this study was to report the clinical and laboratorial follow-up of a canine with pemphigus foliaceous.Case: An 11-year-old male neutered mongrel dog, weighing 9.8 kg, was presented with a main complaint related to disseminated pruritus and lesions in face, trunk and limbs. Dermatological examination revealed meliceric crusts, epidermalcollars and diffuse pustules in inguinal, abdominal, face, limbs, ears and thoraco-lumbar regions. Cytological examinationwas performed, revealing inflammatory and acantholytic cells and absence of bacterial cells. Biopsy procedure revealedsubcorneal pustule with presence of epithelial acantholytic cells and neutrophils, compatible with canine pemphigusfoliaceous. Hemato-biochemical analysis revealed a leukocytosis due to increased neutrophil count. Systemic treatmentwith high dose of prednisolone (2.0 mg/kg) and azathioprine (2.5 mg/kg) was proposed, while topical therapy with a 3%chlorhexidine shampoo was used to prevent secondary bacterial infections. The patient improved the dermatological clinicalsigns, being possible to observe a reduction of systemic and tissue inflammatory process. After 90 days of therapy, therewas a partial loss of hair body coverage, associated with follicular lesions, and after 180 days of therapy it was possibleto notice a new hair mantle, without visible areas of inflammation...(AU)

Lúpus eritematoso discoide em cão / Dischoid erythematosus lupus in dog

O Lúpus Eritematoso Discoide (LED) é uma doença autoimune que causa alterações no sistema tegumentar dos animais. Ela acomete cães, gatos, equinos e humanos. Sua etiologia ainda não é bem elucidada, mas acredita-se que fatores genéticos, hormonais e ambientais possam possivelmente desencadeá-la. Essa enfermidade é caracterizada por despigmentação, eritema e descamação nas áreas acometidas, podendo em casos crônicos úlceras serem observadas. Seu diagnóstico baseia-se nos resultados obtidos na anamnese, histórico, exame físico e no exame histopatológico. Por se tratar de uma doença autoimune não há cura definitiva, ocorre apenas o controle, que para tal, pode-se utilizar drogas imunossupressoras e restrição solar. Objetiva-se com presente trabalho relatar um caso de Lúpus Eritematoso Discoide em um cão. No caso relatado o animal apresentava lesões com aspecto eritematoso, descamativo e ulcerado, na região nasal, nos lábios e gengiva, região perianal e na região abdominal caudal. O diagnóstico confirmatório da doença foi realizado por meio do exame histopatológico. Como tratamento foi instituído a corticoterapia a base de prednisolona na dose de 2mg/kg, BID, por 10 dias, posteriormente a dose foi reduzida para 1mg/kg, BID, por mais 10 dias e depois 1mg/kg, em dias alternados, também foi recomendado a restrição solar. O animal respondeu positivamente ao tratamento instituído com melhora significativa dos sinais clínicos apresentados. Contudo, deve-se salientar que a terapêutica instituída com objetivo de controle, pois conforme já foi mencionado não há cura definitiva para a enfermidade.

Discoid Lupus Erythematosus (LED) is an autoimmune disease that causes changes in the integumentary system of animals. It affects dogs, cats, horses and humans. Its etiology is still not well understood, but it is believed that genetic, hormonal and environmental factors may possibly trigger it. This disease is characterized by depigmentation, erythema and desquamation in the affected areas, and in chronic cases ulcers may be observed. Its diagnosis is based on the results obtained in the anamnesis, history, physical examination and histopathological examination. Because it is an autoimmune disease, there is no definitive cure, only control occurs, for which, immunosuppressive drugs and solar restriction can be used. The objective of this work is to report a case of Discoid Lupus Erythematosus in a dog. In the case reported, the animal presented lesions with an erythematous, scaly and ulcerated aspect, in the nasal region, on the lips and gums, perianal region and in the caudal abdominal region. The confirmatory diagnosis of the disease was performed by means of histopathological examination. As treatment, prednisolone-based corticosteroids were administered at a dose of 2mg / kg, BID, for 10 days, then the dose was reduced to 1mg / kg, BID, for another 10 days and then 1mg / kg, every other day, as well. solar restriction was recommended. The animal responded positively to the treatment instituted with a significant improvement in the clinical signs presented. However, it should be noted that the therapy instituted for the purpose of control, as as already mentioned, there is no definitive cure for the disease.

Lúpus eritematoso discoide em cão / Dischoid erythematosus lupus in dog

O Lúpus Eritematoso Discoide (LED) é uma doença autoimune que causa alterações no sistema tegumentar dos animais. Ela acomete cães, gatos, equinos e humanos. Sua etiologia ainda não é bem elucidada, mas acredita-se que fatores genéticos, hormonais e ambientais possam possivelmente desencadeá-la. Essa enfermidade é caracterizada por despigmentação, eritema e descamação nas áreas acometidas, podendo em casos crônicos úlceras serem observadas. Seu diagnóstico baseia-se nos resultados obtidos na anamnese, histórico, exame físico e no exame histopatológico. Por se tratar de uma doença autoimune não há cura definitiva, ocorre apenas o controle, que para tal, pode-se utilizar drogas imunossupressoras e restrição solar. Objetiva-se com presente trabalho relatar um caso de Lúpus Eritematoso Discoide em um cão. No caso relatado o animal apresentava lesões com aspecto eritematoso, descamativo e ulcerado, na região nasal, nos lábios e gengiva, região perianal e na região abdominal caudal. O diagnóstico confirmatório da doença foi realizado por meio do exame histopatológico. Como tratamento foi instituído a corticoterapia a base de prednisolona na dose de 2mg/kg, BID, por 10 dias, posteriormente a dose foi reduzida para 1mg/kg, BID, por mais 10 dias e depois 1mg/kg, em dias alternados, também foi recomendado a restrição solar. O animal respondeu positivamente ao tratamento instituído com melhora significativa dos sinais clínicos apresentados. Contudo, deve-se salientar que a terapêutica instituída com objetivo de controle, pois conforme já foi mencionado não há cura definitiva para a enfermidade.(AU)

Discoid Lupus Erythematosus (LED) is an autoimmune disease that causes changes in the integumentary system of animals. It affects dogs, cats, horses and humans. Its etiology is still not well understood, but it is believed that genetic, hormonal and environmental factors may possibly trigger it. This disease is characterized by depigmentation, erythema and desquamation in the affected areas, and in chronic cases ulcers may be observed. Its diagnosis is based on the results obtained in the anamnesis, history, physical examination and histopathological examination. Because it is an autoimmune disease, there is no definitive cure, only control occurs, for which, immunosuppressive drugs and solar restriction can be used. The objective of this work is to report a case of Discoid Lupus Erythematosus in a dog. In the case reported, the animal presented lesions with an erythematous, scaly and ulcerated aspect, in the nasal region, on the lips and gums, perianal region and in the caudal abdominal region. The confirmatory diagnosis of the disease was performed by means of histopathological examination. As treatment, prednisolone-based corticosteroids were administered at a dose of 2mg / kg, BID, for 10 days, then the dose was reduced to 1mg / kg, BID, for another 10 days and then 1mg / kg, every other day, as well. solar restriction was recommended. The animal responded positively to the treatment instituted with a significant improvement in the clinical signs presented. However, it should be noted that the therapy instituted for the purpose of control, as as already mentioned, there is no definitive cure for the disease.(AU)

Frequência das doenças de pele não tumorais em cães no município de João Pessoa, Paraíba, Brasil (2014-2016) / [Frequency of non tumor skin diseases in dogs in the city of João Pessoa, Paraíba, Brazil (2014-2016)]

Diante da carência de estudos sobre a frequência de dermatopatias que acometem cães por região geográfica no Brasil, o presente estudo objetivou conhecer a frequência das principais doenças cutâneas que afetam cães na região metropolitana de João Pessoa, Paraíba, Brasil. Os dados foram coletados de cães que passaram por atendimento dermatológico no período de setembro de 2014 a dezembro de 2016. Além dos exames clínicos e dermatológicos os cães foram submetidos a exames complementares (citológico, raspado de pele, parasitológico, tricograma, bacteriológico, micológico, histopatológico e molecular). No período do estudo, foram atendidos 1.083 cães, em que 18,65% (202/1.083) apresentavam algum tipo de dermatopatia não tumoral. Dos 202 cães acometidos, 51,49% (104/202) eram machos e 48,51% (98/202), fêmeas. Desses 202 cães, 13 tinham dois diagnósticos, totalizando 215 dermatopatias. Dos cães afetados, 62,87% (127/202) eram de raça definida e 37,13% (75/202), sem raça definida (SRD). As lesões observadas com mais frequência caracterizaram-se por áreas alopécicas, hipotricoicas, maculosas, erosivas e ulcerativas, placoides, eritematosas, assim como comedões, colaretes, seborreia. As dermatopatias parasitárias foram as mais frequentes (35,35%; 76/215), seguidas pelas dermatopatias bacterianas (24,19%; 52/215), dermatopatias alérgicas (20,00%; 43/215), dermatopatias fúngicas (17,21%; 37/215), dermatopatias por outras causas (2,32%; 5/215) e pelas dermatopatias autoimunes (0,93%; 2/215). Os exames físicos e dermatológicos, incluindo anamnese detalhada, histórico clínico apurado, associado a exames complementares, são ferramentas importantes para o diagnóstico das dermatopatias em cães. Presume-se que a frequência de dermatopatias em cães na região de estudo possa ser maior do que a observada.(AU)

Faced with the lack of studies on the frequency of dermatopathies that affect dogs by geographical region in Brazil, the present study aimed to evaluate the frequency of dermatopathies that affect the canine species in the metropolitan region of João Pessoa, Paraíba, Brazil. Data was collected from dogs that underwent dermatological care from September 2014 to December 2016. In addition to the clinical and dermatological examinations, dogs underwent complementary exams, such as cytological, skin scraping, parasitological skin examination, trichogram, bacteriological, mycological, histopathological and/or polymerase chain reaction. During the study period, 1,083 dogs were examined, in which 18.65% (202 /1,083) had some form of non-tumoral dermatopathy. Of the 202 dogs affected, 51.49% (104/202) were males and 48.51% (98/202) females. Of these 202 dogs, thirteen had two diagnoses, totaling 215 dermatopathies. 62.87% (127/202) of the affected dogs were purebred and 37.13% (75/202) were without a defined breed (WDB). The most frequently observed lesions were alopecia, hypotric, macular, erosive and ulcerative, placoid, erythematous areas, as well as comedones, collaretes and seborrhoea. The parasitic dermatopathies were the most frequent (35.35%; 76/215), followed by bacterial dermatopathies (24,19%; 52/215), allergic dermatopathies (20,00%; 43/215), dermatomycosis (17,21%; 37/215), dermatopathies for other causes (2,32%; 5/215) and autoimmune dermatopathies (0.93%; 2/215). Clinical and dermatological examination, including a detailed anamnesis, accurate clinical history and associated complementary exams are important tools for the diagnosis of dermatopathies in dogs. Available literature present some studies with canine dermatopathies frequencies superior to that obtained in the present study; however, the number of animals examined was smaller. In this survey, it was possible to establish the primary and secondary diagnoses in 100.0% of the non-tumoral dermatopathies in dogs, results higher than in previous studies. Probably, the frequency of canine dermatopathies in this region is higher than that observed, thus requiring additional studies with greater sampling.(AU)