In heme degradation, biliverdin reductase catalyzes the conversion of biliverdin to bilirubin. Defects in the biliverdin reductase A gene () causing biliverdinuria are extraordinarily rare in humans, and this inborn error of metabolism has not been reported in other mammals. The objective of this study was to diagnose biliverdinuria and identify the causal variants in two adult mixed-breed dogs with life-long green urine.
View Article and Find Full Text PDFDyserythropoietic anemia and myopathy syndrome (DAMS) with neonatal losses was recently characterized as an autosomal recessive disorder caused by an frameshift variant in English Springer Spaniels (ESSPs). The frequency and dissemination of the mutation remained unknown. The EHBP1L1 protein is essential for muscle function, and the Rab8/10-EHBP1L1-Bin1-dynamin axis participates in nuclear polarization during the enucleation of erythroblasts.
View Article and Find Full Text PDFImportance: This is the first reported case of fragrance products-induced recurrent oxidative hemolytic anemia in a dog, detailing the successful therapeutic approach employed.
Case Presentation: A 4-year-old intact female Pomeranian dog presented with brown tongue, pigmenturia, peripheral edema, and vomiting. Blood smears revealed a high count of eccentrocytes and Heinz bodies, along with a precipitous decline in packed cell volume and an increase in blood methemoglobin levels, suggesting an oxidative hemolytic crisis.
Different blood group systems have been characterized in people and other mammals. In domestic cats, the blood group system plays the most important clinical role and has been investigated extensively-from the phenotype to the molecular genetics. In non-domestic felids, phenotypic blood typing has been performed by different methods to detect the antigens, but the four informative markers in domestic cats were not able to identify types and () in non-domestic cats.
View Article and Find Full Text PDFMammals are generally resistant to Mycobacterium avium complex (MAC) infections. We report here on a primary immunodeficiency disorder causing increased susceptibility to MAC infections in a canine breed. Adult Miniature Schnauzers developing progressive systemic MAC infections were related to a common founder, and pedigree analysis was consistent with an autosomal recessive trait.
View Article and Find Full Text PDFBased upon previous clinical experience with domestic cats (), the ability to assess blood types and blood (in-)compatibilities of nondomestic felids, and adequately consider and plan for blood transfusions, may be important. Although nondomestic felids appear to have an blood group system similar to domestic cats, typing with point-of-care kits and by genotyping for domestic cats have not been reported. In this study, 162 blood samples from 18 different nondomestic felid species (cheetah [, = 42], lion [, = 33], tiger [, = 23], Canada lynx [, = 11], snow leopard [, = 10], puma [, = 7], clouded leopard [, = 6], serval [, = 5], jaguar [, = 5], fishing cat [, = 4], Pallas cat [, = 3], bobcat [, = 3], ocelot [, = 3], black footed cat [, = 2], leopard [, = 2], African wildcat [, = 1], caracal [, = 1], and sand cat [, = 1]) were blood typed by laboratory and point-of-care tests, genotyped for four known variants for type and type () phenotypes, and crossmatched with one another and domestic type cats.
View Article and Find Full Text PDFObjective: This case report describes a cat with severe erythrocytosis (Hct, 80%), which after initial treatment with hydroxyurea has gone into remission for over 3 years.
Animal: A 1-year-old neutered male American Maine Coon crossbred cat.
Clinical Presentation, Progression, And Procedures: A 1-year-old neutered male American Maine Coon crossbred domestic cat was presented with acute neurologic signs, systolic heart murmur, and extreme erythrocytosis (Hct, 80%; normal interval, 30% to 48%).
Objective: To analyze the surgical management of sigmoid diverticular disease (SDD) before, during, and after the first containment rules (CR) for the first wave of COVID-19.
Methods: From the French Surgical Association multicenter series, this study included all patients operated on between January 2018 and September 2021. Three groups were compared: A (before CR period: 01/01/18-03/16/20), B (CR period: 03/17/20-05/03/20), and C (post CR period: 05/04/20-09/30/21).
An adult domestic short-haired feline leukemia virus-infected cat was referred for kidney failure and worsening anemia requiring transfusions. ABC blood typing was performed with an immunochromatographic strip assay at different occasions. Gel column systems were used for the major and minor crossmatching tests, and anti-A and anti-B titers were determined.
View Article and Find Full Text PDFThe immunodiagnostic assessment of dogs suspected of having immune-mediated hemolytic anemia (IMHA) is based on persistent autoagglutination of erythrocytes (after three saline washes), marked spherocytosis, and a positive direct antiglobulin (Coombs') test (DAT). However, the value of using the indirect antiglobulin test (IAT) for the detection of anti-erythrocytic autoantibodies in serum from dogs suspected of having IMHA is unclear. To evaluate the IAT, leftover serum samples from a large cohort of 94 dogs suspected of having IMHA and for which DAT results were known were incubated with DAT- erythrocytes, and five IAT techniques were performed (in part with different reagents and temperatures): microtiter plate (MICRO), microcapillary, laboratory gel column, gel minitube kit (GEL KIT), and immunochromatographic strip kit.
View Article and Find Full Text PDFMethemoglobinemia is an acquired or inherited condition resulting from oxidative stress or dysfunction of the NADH-cytochrome b5 reductase or associated pathways. This study describes the clinical, pathophysiological, and molecular genetic features of a cat with hereditary methemoglobinemia. Whole genome sequencing and mRNA transcript analyses were performed in affected and control cats.
View Article and Find Full Text PDFMuscular dystrophy due to dystrophin deficiency in humans is phenotypically divided into a severe Duchenne and milder Becker type. Dystrophin deficiency has also been described in a few animal species, and few gene variants have been identified in animals. Here, we characterize the clinical, histopathological, and molecular genetic aspects of a family of Maine Coon crossbred cats with clinically mild and slowly progressive muscular dystrophy.
View Article and Find Full Text PDFJ Vet Intern Med
January 2023
Hereditary myopathies are well documented in dogs, whereas hereditary dyserythropoietic anemias are rarely seen. The aim of this study was to further characterize the clinical and clinicopathological features of and to identify the causative genetic variant for a dyserythropoietic anemia and myopathy syndrome (DAMS) in English springer spaniel dogs (ESSPs). Twenty-six ESSPs, including five dogs with DAMS and two puppies that died perinatally, were studied.
View Article and Find Full Text PDFHereditary factor XI (FXI) deficiency is characterized as an autosomal mild to moderate coagulopathy in humans and domestic animals. Coagulation testing revealed FXI deficiency in a core family of Maine Coon cats (MCCs) in the United States. Factor XI-deficient MCCs were homozygous for a guanine to adenine transition resulting in a methionine substitution for the highly conserved valine-516 in the FXI catalytic domain.
View Article and Find Full Text PDFThe adrenal glands play a major role in metabolic processes, and both excess and insufficient serum cortisol concentrations can lead to serious metabolic consequences. Hyper- and hypoadrenocorticism represent a diagnostic and therapeutic challenge. Serum samples from dogs with untreated hyperadrenocorticism ( = 27), hyperadrenocorticism undergoing treatment ( = 28), as well as with untreated ( = 35) and treated hypoadrenocorticism ( = 23) were analyzed and compared to apparently healthy dogs ( = 40).
View Article and Find Full Text PDFHepatopathies can cause major metabolic abnormalities in humans and animals. This study examined differences in serum metabolomic parameters and patterns in left-over serum samples from dogs with either congenital portosystemic shunts (cPSS, n = 24) or high serum liver enzyme activities (HLEA, n = 25) compared to control dogs (n = 64). A validated targeted proton nuclear magnetic resonance spectroscopy platform was used to assess 123 parameters.
View Article and Find Full Text PDFHemophilia B is an x-linked recessive hereditary coagulopathy that has been reported in various species. We describe a male Newfoundland-Parti Standard Poodle hybrid puppy and its family with hemophilia B from clinical manifestations to the molecular genetic defect. The index case presented for dyspnea was found to have a mediastinal hematoma, while surgical removal and transfusion support brought some relief, progressive hematoma formations led to humane euthanasia.
View Article and Find Full Text PDFBackground: A 2019 ACVIM consensus statement on diagnostics for immune-mediated hemolytic anemia (IMHA) in dogs made testing recommendations. As data on the performance of immunohematological tests was lacking, we undertook a comparative analysis.
Material And Methods: Anticoagulated blood samples from 126 dogs suspected of having IMHA submitted to a diagnostic veterinary laboratory for a routine direct antiglobulin test (DAT) and from 28 healthy control dogs were evaluated for spherocytosis and autoagglutination before and after three saline washes.
Curr Clin Microbiol Rep
September 2020
Purpose Of Review: Among the nontuberculous mycobacteria (NTM), complex (MAC) is the leading cause of pulmonary disease in humans. Innate and acquired immunodeficiencies have been associated with an increased host susceptibility to NTM infections. The underlying mechanisms predisposing humans and dogs to MAC infections is being elucidated.
View Article and Find Full Text PDFVast progress has been made in the clinical diagnosis and molecular basis of hereditary diseases and genetic predisposition in companion animals. The purpose of this report is to provide an update on the availability of DNA testing for hereditary diseases and genetic predispositions in dogs and cats utilizing the WSAVA-PennGen DNA Testing Database web resource (URL: http://research.vet.
View Article and Find Full Text PDFBackground: An autosomal recessive, rapidly progressive degenerative neuropathy known as infantile neuroaxonal dystrophy (NAD) was originally reported in Papillion puppies in 1995. In 2015, a causative missense variant in the PLA2G6 gene was identified in three affected puppies. Archived samples from Papillons clinically diagnosed with NAD prior to 2015 as well as samples obtained from 660 Papillons from North America and Europe between 2015 and 2017 were screened for the presence of this PLA2G6 gene variant (XM_022424454.
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