Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 11.598
Filtrar
1.
Vet Parasitol ; 277: 109017, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31901535

RESUMO

Cystic echinococcosis represents a significant problem in human and animal health and constitutes one of the most severe Neglected Tropical Diseases prioritized by the World Health Organization. The etiological agent is the complex Echinococcus granulosus sensu lato (s. l.), composed of several species/genotypes. Diagnosis in the definitive host and molecular epidemiology studies are important points for cystic echinococcosis control. Here we developed a new copro-LAMP assay, LAMP EGSL, for diagnosis in the definitive host for simultaneous detection of Echinococcus granulosus sensu stricto (s. s.), Echinococcus ortleppi, and Echinococcus canadensis species. Also, the analytical sensitivity, specificity and plausibility of performance in a rural context of a previously reported species-specific LAMP reaction, was evaluated. Both reactions showed high analytical sensitivity values (10 fg-100 fg DNA) and did not show cross reaction with DNA from host or other helminthic parasites. LAMP EGSL was performed with samples from an endemic area. In addition, the alkaline hydrolysis of one E. granulosus s. s. adult parasite followed by specific LAMP to E. granulosus s. s. was performed in a laboratory with low resources from another cystic echinococcosis endemic area. The results obtained suggest that LAMP EGSL represents a potential tool for canine diagnosis that could be useful for cystic echinococcosis control programs. In addition, we showed that LAMP reaction for E. granulous s. s., E. ortleppi and E. canadensis specific detection, could be useful for molecular epidemiology studies applicable to the definitive host. Both reactions were performed in endemic, rural areas without sophisticated equipment.


Assuntos
Testes Diagnósticos de Rotina/métodos , Doenças do Cão/diagnóstico , Equinococose/veterinária , Echinococcus granulosus , Parasitologia/métodos , Animais , Doenças do Cão/parasitologia , Cães , Equinococose/diagnóstico , Equinococose/parasitologia , Sensibilidade e Especificidade , Especificidade da Espécie
2.
Vet Parasitol ; 277: 109015, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31874403

RESUMO

Canine leishmaniosis (CanL)-associated chronic kidney disease is a leading cause of morbidity and mortality in Mediterranean countries. Novel renal biomarkers, such as serum symmetric dimethylarginine (sSDMA), may be useful surrogates for the detection of renal functional impairment. The objectives of this study were to investigate sSDMA concentrations in dogs with CanL, with and without azotemia, and to establish any potential association with the prevalence and severity of proteinuria, with the prevalence of decreased urine specific gravity and with the LeishVet clinical stages of CanL. Serum samples from 68 dogs with CanL (50 nonazotemic and 18 azotemic) and 17 healthy dogs were retrospectively examined. Increased sSDMA was documented in 26 % of dogs with CanL without azotemia and in 83.3 % of dogs with azotemia. Serum SDMA was significantly higher in azotemic compared to nonazotemic dogs and was associated with the presence and severity of proteinuria, the decreased urine specific gravity and the advanced clinical stages of CanL. The results of the present study indicate that sSDMA may be a useful adjunct to serum creatinine and urine protein/creatinine ratio for the detection of CanL-associated nephropathy, but it is of limited value for distinguishing among the LeishVet clinical stages of CanL.


Assuntos
Arginina/análogos & derivados , Doenças do Cão/diagnóstico , Leishmaniose Visceral/complicações , Leishmaniose Visceral/diagnóstico , Insuficiência Renal Crônica/etiologia , Animais , Arginina/sangue , Azotemia/veterinária , Biomarcadores/sangue , Doenças do Cão/sangue , Cães , Leishmania infantum/fisiologia , Insuficiência Renal Crônica/sangue , Estudos Retrospectivos
3.
Vet Parasitol ; 276: 108975, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31775102

RESUMO

The suitability of acetic acid as a safer alternative to formalin in the modified Knott test was evaluated for the diagnosis of canine heartworm (Dirofilaria immitis). Microfilaria concentration was measured by both methods and found to agree within reasonable limits (-5.84 % bias; -88.1-76.4 % limits of agreement). The level of agreement was lower when samples were prepared with a 24 h delay, but this was due to the formalin method tending to yield lower counts (-20.1 % bias; -90.5-50.2 % limits of agreement). Clearing the sample of hemoglobin improves readability and is a key feature of the modified Knott test. Hemolysis was significantly lower in the acetic acid method than the formalin method as measured by red blood cell count (6.83 × 106 and 8.79 × 106 cells/ml, respectively; p = 0.015) and absorbance at 415 nm (33.20 and 34.75, respectively; p < 0.001). Visual assessment, however, revealed little practical difference in readability. Finally, lengths of microfilariae were measured to ensure the validity of species identification by the acetic acid method; mean length was significantly shorter after acetic acid treatment (273 µm) than formalin treatment (316 µm; p < 0.001). Length reduction was also observed in acetic acid-treated Acanthocheilonema reconditum (254 µm versus 262 µm; p = 0.035), though these samples were stored prior to testing and are not directly comparable. We conclude that, while the readability of samples is similar for both methods, species differentiation must still be accomplished by other means. For most clinical purposes in determining the presence or absence of blood circulating microfilariae, however, acetic acid appears to be a suitable alternative to formalin in the modified Knott test.


Assuntos
Ácido Acético , Dirofilariose/diagnóstico , Doenças do Cão/diagnóstico , Indicadores e Reagentes , Microfilárias/crescimento & desenvolvimento , Animais , Dirofilariose/parasitologia , Doenças do Cão/parasitologia , Cães , Formaldeído , Hemólise/efeitos dos fármacos
4.
Exp Parasitol ; 206: 107771, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31585116

RESUMO

A PCR targeting mitochondrial cytochrome oxidase subunit III (cox3) for molecular detection of Babesia gibsoni infection in dogs has been developed in this study. Fifty blood samples from suspected clinical cases from dogs, brought to the veterinary college clinics, were examined for presence of B. gibsoni using conventional diagnosis by microscopic examination of Giemsa stained thin blood smears. In addition, species specific PCRs targeting ITS-1 region (BgITS-1 PCR) and nested PCR targeting 18S ribosomal RNA gene (Bg18SnPCR) were carried out. A 634 bp PCR fragment of B. gibsoni cox3 gene was amplified in positive samples from three geographical locations of Satara, Wai and Pune in Maharashtra state of India. From analysis of the sequence of the B. gibsoni cox3 gene, we found that the Indian isolate had 96-98% similarity to the isolate from Japan and China. Post sequencing, de-novo diagnostic primer pair for species specific amplification of 164 bp fragment of B. gibsonicox3 was designed and the PCR was standardized. The diagnostic results of de-novo Bgcox3 PCR were compared with BgITS-1 PCR and Bg18S nPCR. Thin blood smears detected 22% (11/50) samples positive for small form of Babesia species. The BgITS-1 PCR detected 25% samples (15/50) as positive and Bg18S nPCR detected 80% (40/50) B. gibsoni positive samples. The de-novo Bgcox3 PCR detected 66% (33/50) samples positive for B. gibsoni (at 95% CI). The analytical sensitivity of cox3 PCR was evaluated as 0.000003% parasitaemia or 09 parasites in 100  µl of blood. The de-novo diagnostic cox3 PCR did not cross react with control positive DNA from other haemoprotozoa and rickettsia like B. vogeli, Hepatozoon canis, Trypanosoma evansi, Ehrlichia canis and Anaplasma platys. Statistically, cox3 PCR had better diagnostic efficiency than ITS-1 PCR in terms of sensitivity (p = 0.0006). No statistically significant difference between results of cox3 PCR and 18S nPCR was observed (p = 0.1760). Kappa values estimated for each test pair showed fair to moderate agreement between the observations. Specificity of Bgcox3 PCR was 100% when compared with microscopy or BgITS-1 PCR. Sensitivity of Bgcox3 PCR was 100% when compared with that of Bg18S nPCR.


Assuntos
Babesia/isolamento & purificação , Babesiose/diagnóstico , Doenças do Cão/diagnóstico , Complexo IV da Cadeia de Transporte de Elétrons/genética , Mitocôndrias/enzimologia , Animais , Babesia/classificação , Babesia/genética , Babesiose/parasitologia , Sequência de Bases , Reações Cruzadas , DNA Espaçador Ribossômico/química , Doenças do Cão/parasitologia , Cães , Eritrócitos/parasitologia , Funções Verossimilhança , Filogenia , Reação em Cadeia da Polimerase/veterinária , Valor Preditivo dos Testes , RNA Ribossômico 18S/análise , Sensibilidade e Especificidade , Alinhamento de Sequência/veterinária
5.
J Vet Sci ; 20(5): e46, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31565889

RESUMO

Salivary alpha-amylase (sAA) is a stress biomarker in human diseases, but there are no reports of sAA measurements in diseased dogs. This study measured the sAA and serum alpha-amylase (AA) levels in 16 healthy dogs and 31 diseased dogs using a kinetic enzyme assay to assess the stress status. The sAA and serum AA levels were significantly higher in the diseased dogs than in healthy dogs (p < 0.05), but there was no correlation between the 2 groups (r = 0.251, p = 0.089). This suggests that sAA can be useful as a stress biomarker in diseased dogs.


Assuntos
Doenças do Cão/diagnóstico , Doenças do Cão/fisiopatologia , Saliva/química , alfa-Amilases/sangue , Animais , Biomarcadores/metabolismo , Cães , Feminino , Masculino , alfa-Amilases Salivares/metabolismo , Estresse Fisiológico
6.
J Vet Sci ; 20(5): e53, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31565896

RESUMO

YKL-40, a secreted glycoprotein, may serve as an autoantigen, which mediates multiple inflammatory diseases and cancers. A high YKL-40 serum level is correlated with metastasis and poor survival in a variety of human cancers. However, the role of YKL-40 in dogs is still under evaluation. Herein, we examined the associations between plasma YKL-40 level and YKL-40 autoantibody (YAA) titers with malignancy and prognosis in canine cancer. Plasma levels of YKL-40 in healthy dogs (n = 20) and in dogs (n = 82) with cancer were evaluated using enzyme-linked immunosorbent assay. Our results indicated that plasma YKL-40 levels were significantly higher (p < 0.01) in dogs with cancer than in healthy dogs. A significant decrease in the YAA titers was detected in the dogs with cancer when compared with those of the healthy dogs (p < 0.05), although the change was not correlated with the YKL-40 levels. Among the dogs with cancer, plasma YKL-40 levels in the dogs that later relapsed or had metastasis were significantly higher than in the dogs with no signs of relapse (p < 0.01) or metastasis (p < 0.05). The relapse and metastasis rates were significantly higher in the high YKL-40 group (> 180 pg/mL) than in the low YKL-40 group (< 180 pg/mL). The results imply that plasma YKL-40 levels might have the potential to be developed as a marker of malignancy progression and prognosis in canine cancers.


Assuntos
Biomarcadores Tumorais/sangue , Proteína 1 Semelhante à Quitinase-3/sangue , Doenças do Cão/metabolismo , Neoplasias/veterinária , Animais , Doenças do Cão/diagnóstico , Cães , Neoplasias/diagnóstico , Neoplasias/metabolismo , Prognóstico
7.
Rev Bras Parasitol Vet ; 28(4): 661-670, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31618303

RESUMO

We report the first documented case of endocarditis associated with Bartonella clarridgeiae in a dog in Latin America. Infective vegetative valvular aortic endocarditis was diagnosed in a 10-year-old male mixed breed dog. The dog presented grade V/VI systolic and diastolic murmur, hyperthermia, and progressive weight loss. Cardiomegaly and presence of diffuse alveolar pattern in the lung fields were observed in the thorax radiography evaluation. Irregular and hyperechogenic structures adhered to the aortic leaflets, causing obstruction of the left ventricular outflow tract and severe aortic insufficiency, were observed in the echocardiography evaluation. A vegetative, whitish, hardened structure measuring 1.0 cm in diameter was observed in aortic semilunar valve at necropsy. Based on a combination of pre-enrichment insect-based medium liquid culture, quantitative real-time and conventional PCR assays based on nuoG and gltA genes, respectively, followed by sequencing and phylogenetic inferences, B. clarridgeiae DNA was detected in the patient's aortic valve lesions. Clinical, echocardiographic, anatomopathologic and molecular features supported the diagnosis of severe aortic vegetative endocarditis possibly caused by B. clarridgeiae in a dog in Brazil.


Assuntos
Valva Aórtica/microbiologia , Infecções por Bartonella/veterinária , Bartonella/genética , Doenças do Cão/microbiologia , Endocardite/veterinária , Animais , Bartonella/classificação , Infecções por Bartonella/diagnóstico , Doenças do Cão/diagnóstico , Cães , Endocardite/diagnóstico , Endocardite/microbiologia , Evolução Fatal , Masculino , Índice de Gravidade de Doença
8.
Ann Parasitol ; 65(2): 183-186, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31578842

RESUMO

A 10-year-old intact female Chihuahua, 2.5 kg of weight and BCS 2 (range 1­5) was taken in for medical consultation due to the presence of four skin lesion, two in the ventral thoracic region and two in the dorsal region. The dog was receiving medication due to congestive heart failure. A cutaneous form of canine leishmaniosis was diagnosed using molecular tools from a 10-years-old Chihuahua dog living in the Caribbean region. The critical health condition of the geriatric patient may have evolved to a fatal renal failure. This report is the first of a fatal case of leishmaniosis in a dog from the endemic region in Mexico.


Assuntos
Doenças do Cão , Leishmania infantum , Leishmaniose Cutânea , Animais , Doenças do Cão/diagnóstico , Doenças do Cão/parasitologia , Cães , Evolução Fatal , Feminino , Leishmaniose Cutânea/diagnóstico , Leishmaniose Cutânea/patologia , Leishmaniose Cutânea/veterinária , México , Pele/parasitologia
9.
Vet J ; 252: 105343, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31554584

RESUMO

Hyperadrenocorticism is a relatively common endocrine disorder in dogs that has been extensively described. However, its diagnosis remains challenging because there is no true reference standard test, and a myriad factors can affect the diagnostic performance of the commonly used adrenal function tests. Ultimately, the diagnosis is based on a combination of signalment, history and clinical findings, and a variety of diagnostic test results. The second part of this review aims to appraise available data on diagnostic performance of adrenal function tests in naturally occurring canine hyperadrenocorticism.


Assuntos
Testes de Função do Córtex Suprarrenal/veterinária , Hiperfunção Adrenocortical/veterinária , Hormônio Adrenocorticotrópico/sangue , Doenças do Cão/diagnóstico , Hiperfunção Adrenocortical/diagnóstico , Animais , Doenças do Cão/sangue , Cães
10.
Vet J ; 252: 105355, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31554587

RESUMO

Accelerometer measurements are frequently reported as total weekly activity counts (AC). Methods of utilizing activity parameters to allow differentiation of activity intensities (i.e., manually derived cut-points) have been described. While this information may provide valuable data for researchers, only few investigators have utilized these methods. This may, in part, be due to the challenge associated with data processing. Some devices, however, generate activity intensity data automatically. This study was conducted to evaluate a novel accelerometer that allows for remote download of data via Wi-Fi (Heyrex), to compare automatically generated parameters quantifying activity levels to previously established cut-points (Actical) and to describe the variability of accelerometer data in dogs with osteoarthritis. Twelve client-owned dogs with osteoarthritis were fitted with a collar with two accelerometers (Heyrex and Actical). Accelerometer data were recorded for 28 days. Pearson bivariate correlations and coefficient of variation (CV%) were calculated for accelerometer data. There was a strong correlation between the AC reported by Heyrex and Actical devices. Several automatically generated parameters showed strong correlations to previously validated cut-points and displayed lower CV% than weekly AC. The activity intensity derived from the Heyrex was associated with the lowest CV% of all parameters from both accelerometers. Automatically generated activity intensity parameters should be considered as potential outcome measures in clinical trials for dogs with osteoarthritis. This novel technology may allow for convenient acquisition of activity intensity data in companion animals. However, technical difficulties (e.g., lack of Wi-Fi connectivity) may pose challenges when using this novel device.


Assuntos
Acelerometria/veterinária , Doenças do Cão/diagnóstico , Atividade Motora , Osteoartrite/veterinária , Acelerometria/instrumentação , Animais , Ensaios Clínicos como Assunto , Doenças do Cão/fisiopatologia , Cães , Feminino , Masculino , Osteoartrite/diagnóstico , Reprodutibilidade dos Testes
11.
Vet J ; 252: 105342, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31554593

RESUMO

Hyperadrenocorticism is a relatively common endocrine disorder in dogs. It occurs as a result of a functional pituitary or adrenal tumour, although other causes have been rarely reported. Canine hyperadrenocorticism has been extensively described but diagnosing this disease remains challenging. Few studies have investigated the clinical and clinicopathological features helpful in differentiating dogs with hyperadrenocorticism from dogs in which the disease is suspected but eventually excluded. Ultimately the diagnosis is based on a combination of multiple pieces of information emanating from the signalment, history, clinical findings, and a variety of diagnostic tests. The first part of this review aims to critically appraise the available data on epidemiology, clinical and laboratory features of naturally occurring canine hyperadrenocorticism.


Assuntos
Hiperfunção Adrenocortical/veterinária , Doenças do Cão/diagnóstico , Hiperfunção Adrenocortical/diagnóstico , Animais , Doenças do Cão/etiologia , Doenças do Cão/patologia , Doenças do Cão/fisiopatologia , Cães
13.
Vet Parasitol ; 274: 108921, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31536867

RESUMO

Dogs are the main domestic reservoir of Leishmania infantum, and in cases of uncontrolled infection, a strong humoral immune response is elicited, which is inefficient against the parasites. Previous studies have suggested that an adequate antigen/antibody ratio, with a moderate prevalence of antigens with respect to the antibodies, could result in the formation of circulating immune complexes (CIC) in canine leishmaniosis (CanL). Deposition of these complexes in tissues has been associated with vasculitis, uveitis, arthritis, dermatitis and especially glomerulonephritis and renal failure. However, little is known about the relationship between the presence of CIC and disease progression. The aim of this study was to evaluate serum CIC level and its correlation with disease severity in infected dogs with different stages of disease and non-infected animals as a control. A total of 60 dogs were included in the study, classified according to the proposed LeishVet classification criteria: healthy non-infected (n = 13); healthy infected (n = 12); sick stage I (n = 9); sick stage II (n = 17); sick stage III (n = 8); and sick stage IV (n = 1). CIC were isolated from serum samples using a modified polyethylene glycol precipitation method, and their levels measured by ELISA and bicinchoninic acid protein assay. A nanoparticle tracking analysis was performed to investigate the relationship between the molecular size distribution of the CIC and disease progression. In conclusion, the results confirmed a positive association between CIC levels, their molecular size and disease progression that suggests a potential use of CIC as biomarkers of CanL.


Assuntos
Complexo Antígeno-Anticorpo/sangue , Doenças do Cão/sangue , Imunofluorescência/veterinária , Leishmaniose/veterinária , Animais , Anticorpos Antiprotozoários/sangue , Biomarcadores/sangue , Doenças do Cão/diagnóstico , Doenças do Cão/imunologia , Doenças do Cão/parasitologia , Cães , Leishmaniose/imunologia , Leishmaniose/patologia
14.
PLoS Negl Trop Dis ; 13(9): e0007720, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31513599

RESUMO

Lipophosphoglycan (LPG) is the major surface glycoconjugate of Leishmania protozoan and has an important biological role in host-parasite interactions both in the midgut epithelium of the sand fly vector and in the vertebrate macrophages. Canine leishmaniasis (CanL) is a chronic infectious disease predominantly caused by Leishmania infantum. An early and accurate immunodiagnosis of the disease is crucial for veterinary clinical practice and for disease control. In this work, we evaluated L. infantum LPG as an antigen in an indirect enzyme-linked immunosorbent assay (ELISA) for CanL immunodiagnosis (LPG-ELISA) by testing serum samples from 97 naturally infected dogs with diverse clinical presentations ranging from subclinical infection to severe disease, as evaluated by veterinarian infectologists. Serum samples from healthy dogs from non-endemic areas (n = 68) and from dogs with other infectious diseases (n = 64) were used as controls for assay validation. The performance of the LPG-ELISA was compared with that of an ELISA using the soluble fraction of L. infantum total lysate antigen (TLA). LPG-ELISA presented a superior performance in comparison to TLA-ELISA, with 91.5% sensitivity, 98.5% specificity and 99.7% accuracy. A distinguishing feature of the LPG-ELISA compared to the TLA-ELISA was its higher ability to identify subclinical infection in clinically healthy dogs, in addition to the absence of cross-reactivity with other canine infectious diseases. Finally, LPG-ELISA was compared to TR DPP visceral canine leishmaniasis test, the immunochromatographic test recommended by the Brazilian Ministry of Agriculture. LPG-ELISA exhibited higher values of specificity (98.5% versus 93.1%) and sensitivity (91.5% versus 90.6%) compared to TR DPP. In conclusion, L. infantum-derived LPG was recognized by antibodies elicited during CanL in different infection stages and was shown to be a suitable antigen for specific clinical settings of veterinary diagnosis and for public health usage.


Assuntos
Leishmaniose/veterinária , Animais , Antígenos de Protozoários/análise , Doenças do Cão/diagnóstico , Doenças do Cão/imunologia , Doenças do Cão/parasitologia , Cães , Ensaio de Imunoadsorção Enzimática/métodos , Glicoesfingolipídeos/imunologia , Leishmania infantum/imunologia , Leishmania infantum/isolamento & purificação , Leishmaniose/sangue , Leishmaniose/diagnóstico , Testes Sorológicos/veterinária
15.
J Vet Dent ; 36(2): 90-96, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31533507

RESUMO

A 9-year-old standard poodle presented for a comprehensive oral health assessment and treatment, at which time a left rostral mandibular swelling was recognized. The mass was biopsied and eventually excised by a left rostral mandibulectomy en bloc resection. Histopathology supported the diagnosis of a benign, intraosseous, epithelial tumor that was otherwise unclassified. The clinical, radiological, and histological features of this case are similar to those reported for squamous odontogenic tumor (SOT) in humans. This case study relays the diagnosis, treatment, and follow-up of the first SOT-like tumor in a dog.


Assuntos
Doenças do Cão/diagnóstico , Neoplasias Mandibulares/veterinária , Neoplasias Epiteliais e Glandulares/veterinária , Tumor Odontogênico Escamoso/veterinária , Tumores Odontogênicos/veterinária , Animais , Cães , Osteotomia Mandibular/veterinária , Neoplasias Epiteliais e Glandulares/diagnóstico , Tumor Odontogênico Escamoso/diagnóstico
16.
Folia Histochem Cytobiol ; 57(3): 146-154, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31553052

RESUMO

INTRODUCTION: Canine cutaneous round cell tumours (CCRCTs) include various benign and malignant neoplastic processes. Due to their similar morphology, the diagnosis of CCRCTs based on histopathological examination alone can be challenging, often necessitating ancillary immunohistochemical (IHC) analysis. This study presents a retrospective analysis of CCRCTs. MATERIALS AND METHODS: This study includes 60 cases of CCRCTs, including 55 solitary and 5 multiple tumours, evaluated immunohistochemically using a basic antibody panel (MHCII, CD18, Iba1, CD3, CD79a, CD20 and mast cell tryptase) and, when appropriate, extended antibody panel (vimentin, desmin, a-SMA, S-100, melan-A and pan-keratin). Additionally, histochemical stainings (May-Grünwald-Giemsa and methyl green pyronine) were performed. RESULTS: IHC analysis using a basic antibody panel revealed 27 cases of histiocytoma, one case of histiocytic sarcoma, 18 cases of cutaneous lymphoma of either T-cell (CD3+) or B-cell (CD79a+) origin, 5 cases of plas-macytoma, and 4 cases of mast cell tumours. The extended antibody panel revealed 2 cases of alveolar rhabdo-myosarcoma, 2 cases of amelanotic melanoma, and one case of glomus tumour. CONCLUSIONS: Both canine cutaneous histiocytoma and cutaneous lymphoma should be considered at the beginning of differential diagnosis for CCRCTs. While most poorly differentiated CCRCTs can be diagnosed immunohis-tochemically using 1-4 basic antibodies, some require a broad antibody panel, including mesenchymal, epithelial, myogenic, and melanocytic markers. The expression of Iba1 is specific for canine cutaneous histiocytic tumours, and more sensitive than CD18. The utility of CD20 in the diagnosis of CCRCTs is limited.


Assuntos
Doenças do Cão/diagnóstico , Neoplasias Cutâneas/diagnóstico , Animais , Diagnóstico Diferencial , Doenças do Cão/imunologia , Doenças do Cão/patologia , Cães , Imuno-Histoquímica/veterinária , Estudos Retrospectivos , Pele/patologia , Neoplasias Cutâneas/imunologia , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/veterinária
17.
Vet J ; 251: 105347, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31492386

RESUMO

Pulmonary hypertension (PH) is associated with substantial morbidity and if untreated, mortality. The human classification of PH is based on pathological, hemodynamic characteristics, and therapeutic approaches. Despite being a leading cause of PH, little is known about dogs with respiratory disease and/or hypoxia (RD/H)-associated PH. Therefore, our objectives were to retrospectively describe clinical features, diagnostic evaluations, final diagnoses and identify prognostic variables in dogs with RD/H and PH. In 47 dogs identified with RD/H and PH, chronic airway obstructive disorders, bronchiectasis, bronchiolar disease, emphysema, pulmonary fibrosis, neoplasia and other parenchymal disorders were identified using thoracic radiography, computed tomography, fluoroscopy, tracheobronchoscopy, bronchoalveolar lavage, and histopathology. PH was diagnosed using transthoracic echocardiography. Overall median survival was 276.0 days (SE, 95% CI; 216, 0-699 days). Dogs with an estimated systolic pulmonary arterial pressure (sPAP) ≥47mmHg (n=21; 9 days; 95% CI, 0-85 days) had significantly shorter survival times than those <47mmHg (n=16; P=0.001). Estimated sPAP at a cutoff of ≥47mmHg was a fair predictor of non-survival with sensitivity of 0.78 (95% CI, 0.52-0.94) and specificity of 0.63 (95% CI, 0.38-0.84). Phosphodiesterase-5 (PDE5) inhibitor administration was the sole independent predictor of survival in a multivariable analysis (hazard ratio: 4.0, P=0.02). Canine PH is present in a diverse spectrum of respiratory diseases, most commonly obstructive disorders. Similar to people, severity of PH is prognostic in dogs with RD/H and PDE5 inhibition could be a viable therapy to improve outcome.


Assuntos
Doenças do Cão/diagnóstico , Hipertensão Pulmonar/veterinária , Hipóxia/veterinária , Transtornos Respiratórios/veterinária , Animais , Doenças do Cão/tratamento farmacológico , Doenças do Cão/etiologia , Cães , Ecocardiografia/veterinária , Feminino , Hipertensão Pulmonar/diagnóstico , Hipertensão Pulmonar/tratamento farmacológico , Hipertensão Pulmonar/etiologia , Hipóxia/fisiopatologia , Masculino , Inibidores da Fosfodiesterase 5/uso terapêutico , Transtornos Respiratórios/fisiopatologia , Estudos Retrospectivos , Análise de Sobrevida , Resultado do Tratamento
18.
Vet J ; 251: 105350, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31492387

RESUMO

Gallbladder mucocele (GBM) is a common extra-hepatic biliary syndrome in dogs with death rates ranging from 7 to 45%. Therefore, the aim of this study was to identify the association of survival with variables that could be utilized to improve clinical decisions. A total of 1194 dogs with a gross and histopathological diagnosis of GBM were included from 41 veterinary referral hospitals in this retrospective study. Dogs with GBM that demonstrated abnormal clinical signs had significantly greater odds of death than subclinical dogs in a univariable analysis (OR, 4.2; 95% CI, 2.14-8.23; P<0.001). The multivariable model indicated that categorical variables including owner recognition of jaundice (OR, 2.12; 95% CI, 1.19-3.77; P=0.011), concurrent hyperadrenocorticism (OR 1.94; 95% CI, 1.08-3.47; P=0.026), and Pomeranian breed (OR, 2.46; 95% CI 1.10-5.50; P=0.029) were associated with increased odds of death, and vomiting was associated with decreased odds of death (OR, 0.48; 95% CI, 0.30-0.72; P=0.001). Continuous variables in the multivariable model, total serum/plasma bilirubin concentration (OR, 1.03; 95% CI, 1.01-1.04; P<0.001) and age (OR, 1.17; 95% CI, 1.08-1.26; P<0.001), were associated with increased odds of death. The clinical utility of total serum/plasma bilirubin concentration as a biomarker to predict death was poor with a sensitivity of 0.61 (95% CI, 0.54-0.69) and a specificity of 0.63 (95% CI, 0.59-0.66). This study identified several prognostic variables in dogs with GBM including total serum/plasma bilirubin concentration, age, clinical signs, concurrent hyperadrenocorticism, and the Pomeranian breed. The presence of hypothyroidism or diabetes mellitus did not impact outcome in this study.


Assuntos
Doenças do Cão/diagnóstico , Doenças da Vesícula Biliar/veterinária , Hiperbilirrubinemia/veterinária , Mucocele/veterinária , Hiperfunção Adrenocortical/veterinária , Animais , Bilirrubina/sangue , Biomarcadores , Doenças do Cão/mortalidade , Doenças do Cão/cirurgia , Cães , Doenças da Vesícula Biliar/diagnóstico , Doenças da Vesícula Biliar/mortalidade , Doenças da Vesícula Biliar/cirurgia , Predisposição Genética para Doença , Hiperlipidemias/veterinária , Mucocele/diagnóstico , Mucocele/mortalidade , Mucocele/cirurgia , Estudos Retrospectivos , Resultado do Tratamento
19.
Vet Parasitol ; 274: 108920, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31493694

RESUMO

Visceral leishmaniasis (VL) is a zoonosis caused by the parasite Leishmania infantum and the dog is its main reservoir in rural and urban areas. The diagnosis of infection is mainly based on the presence of anti-Leishmania IgG antibodies in the serum of infected dogs. In this study, the sensitivity and specificity of qualitative rapid tests (RTs) dual path platform (DPP) Bio-Manguinhos, rapid enzyme-linked immunosorbent assay (ELISA) IDEXX, Kalazar Detect and ALERE, as well as quantitative ELISA Bio-Manguinhos and in-house indirect immunofluorescence assay (IFA) tests were analyzed in sera from infected and uninfected dogs. Serial dilutions of the in-house IFA were compared with RTs and ELISA Bio-Manguinhos. The results showed that none of the tests reached 100% sensitivity and specificity. There was no statistical difference between the analyzed RTs. The most sensitive test was the DPP Bio-Manguinhos (97.9%), while the rapid ELISA IDEXX showed higher specificity (100%). In the treatment setting of infected and/or diseased animals, quantitative tests for monitoring the evolution of antibody titers are required, which indicates the maintenance of in-house IFA in animal handling. Furthermore, we demonstrate that the RTs present higher sensitivity in serum samples with superior antibody titers obtained in the in-house IFA. However, the RTs exhibited false negatives in samples with low titers of antibodies. Among the RTs, only the DPP Bio-Manguinhos presented better performance in this situation. Therefore, the use of RTs for the diagnosis of VL in dogs with low titers of antibodies, such as asymptomatic, should be carefully evaluated.


Assuntos
Doenças do Cão/sangue , Leishmania infantum , Leishmaniose Visceral/veterinária , Testes Sorológicos/veterinária , Animais , Doenças do Cão/diagnóstico , Doenças do Cão/parasitologia , Cães , Leishmaniose Visceral/sangue , Leishmaniose Visceral/diagnóstico , Sensibilidade e Especificidade
20.
Top Companion Anim Med ; 36: 4-8, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31472726

RESUMO

This report describes a 10-month-old dog with a sudden loss of vision and severe dyspnoea. The ocular examination revealed bilateral panuveitis, lens subluxation, secondary glaucoma, and retinal detachment. In addition, the ocular ultrasound showed in the vitreous body of the right eye, a small doubled-lined foreign body compatible with an intraocular parasite. Radiographs of the thorax revealed an increased opacity with mixed lung pattern (alveolar and bronchial) and thoracic ultrasonography showed several subpleural nodules. The presence of Angiostrongylus vasorum first stage larvae was confirmed with 324 larvae per gram of feces and an antigen test for the parasite (AngioDetect, IDEXX) also yielded a positive result. The severe and irreversible ocular lesions described in this case enhanced the complexity of the clinical picture of canine angiostrongylosis. Infection with the parasite should be included in the list of differential diagnoses for ocular uveitis to avoid potentially serious complications related to a missed or delayed diagnosis.


Assuntos
Angiostrongylus/isolamento & purificação , Doenças do Cão/parasitologia , Oftalmopatias/veterinária , Infecções por Strongylida/veterinária , Animais , Doenças do Cão/diagnóstico , Doenças do Cão/tratamento farmacológico , Cães , Oftalmopatias/diagnóstico , Oftalmopatias/tratamento farmacológico , Oftalmopatias/parasitologia , Fezes/parasitologia , Feminino , Glaucoma/complicações , Itália , Subluxação do Cristalino/parasitologia , Subluxação do Cristalino/veterinária , Pneumopatias Parasitárias/diagnóstico por imagem , Pneumopatias Parasitárias/veterinária , Pan-Uveíte/parasitologia , Pan-Uveíte/veterinária , Descolamento Retiniano/parasitologia , Descolamento Retiniano/veterinária , Infecções por Strongylida/diagnóstico , Infecções por Strongylida/tratamento farmacológico
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA