O que significa “Limpar”?
O animal não carrega a mutação. Não desenvolverá a doença e não vai passar adiante.
Gato Gangliosidose Gm2 no mercado doméstico japonês (GM2-JD)
Gangliosidosis GM2 in Japanese Domestic cats is a rare genetic disorder affecting the nervous system. This inherited condition leads to the accumulation of GM2 gangliosides, causing progressive neurological symptoms. A DNA test for Gangliosidosis GM2 helps breeders and cat owners identify carriers and affected cats early. Early diagnosis through genetic testing is crucial for managing the health and wellbeing of Japanese Domestic cats. By using a reliable DNA test, breeders can make informed decisions to prevent the spread of this debilitating disease. Protect your Japanese Domestic cat’s future with accurate Gangliosidosis GM2 DNA testing. Ensure a healthy lineage by screening for this genetic disorder today.
Abreviatura: GM2-JD
Mutação analisada: HEXB c.667C>T
Herança: Autossômico Recessivo
Acrônimo
GM2-JD
Frequência observada
Gravidade clínica
Classificação clínica
Doenças Metabólicas
Mutação analisada
HEXB c.667C>T
p.(R223*)
p.(R223*)
Modo de herança
Autossômico Recessivo
Resumo do teste:
Gangliosidosis GM2 is a genetic disorder found in Japanese Domestic cats, caused by a deficiency in the enzyme responsible for breaking down GM2 gangliosides. A DNA test can identify carriers and affected cats by detecting mutations in the HEXA or HEXB genes. Early diagnosis through genetic testing helps breeders prevent the spread of this fatal disease. Affected cats typically show neurological symptoms such as weakness and loss of coordination. Responsible breeding practices rely on DNA testing to maintain the health of the Japanese Domestic cat population.
Disponível no pacote: Basic
Este teste de DNA está incluído a partir do nosso pacote Basic - e também faz parte dos packs Basic, Standard, Advanced, Complete.
Ver pacotes de teste de DNA →Escolha o pack que melhor se adapta à sua estratégia de criação ou saúde dos seus animais.
Understanding Gangliosidosis GM2 in Cats
Gangliosidosis GM2 is a genetic disorder that primarily affects the nervous system of cats. It is caused by a deficiency in the enzyme Hexosaminidase A (Hex-A), which is essential for the breakdown of certain lipids known as gangliosides. When this enzyme is deficient, gangliosides accumulate in the brain and other tissues, leading to progressive neurological dysfunction.
Clinical Signs of GM2 Gangliosidosis
Cats affected by GM2 gangliosidosis typically present a range of clinical signs that can vary in severity. Common symptoms include progressive weakness, lack of coordination, behavioral changes, and seizures. These symptoms usually manifest in young cats, often before they reach one year of age. As the condition progresses, affected cats may experience difficulty with movement, an inability to walk, and a decline in overall health.
Pathophysiology of GM2 Gangliosidosis
The pathophysiology of GM2 gangliosidosis is rooted in the accumulation of gangliosides due to the malfunction of the Hex-A enzyme. This accumulation leads to toxic effects on neuronal cells, resulting in cellular damage and death. Over time, the degeneration of nerve cells manifests as the neurological symptoms observed in affected cats. The condition is classified as a lysosomal storage disorder, highlighting the role of lysosomes in cellular waste management and the consequences of their dysfunction.
Genetic Basis of GM2 Gangliosidosis
GM2 gangliosidosis is inherited in an autosomal recessive manner, meaning that an individual must inherit two copies of the mutated gene—one from each parent—to develop the disease. The specific gene associated with this condition is located on chromosome 16 in cats. Genetic mutations that lead to the loss of Hex-A enzyme activity are responsible for the clinical manifestations of the disorder. Understanding the genetic foundation of GM2 gangliosidosis is critical for breeding programs aimed at reducing the incidence of this disease.
Diagnosis of GM2 Gangliosidosis
Diagnosis of GM2 gangliosidosis typically involves a combination of clinical evaluation and genetic testing. Veterinarians may suspect the condition based on clinical signs and a thorough neurological examination. However, definitive diagnosis often requires DNA testing to identify mutations in the gene responsible for the disorder. Early diagnosis is crucial for managing the condition and making informed decisions regarding the care of affected cats.
Management and Prognosis
Currently, there is no cure for GM2 gangliosidosis, and management focuses on supportive care to improve the quality of life for affected cats. This may include pain management, nutritional support, and environmental modifications to accommodate mobility challenges. The prognosis for cats with GM2 gangliosidosis is generally poor, with affected individuals often requiring humane euthanasia as the disease progresses. Awareness of this condition is essential for cat owners and breeders to make informed decisions regarding breeding practices and the health of their feline companions.
Raça reconhecida para o teste: Gangliosidose Gm2 no mercado doméstico japonês (GM2-JD)
- Japanese domestic
🧬 Interpretation of genotypes GM2-JD
Genótipo
Status
🟡 N/N
Não portador - sem risco
🟡 N/GM2-JD
Transportadora - Sem Risco
❌ GM2-JD/GM2-JD
Afetados - Em risco
FAQ: entendendo a interpretação
Um “transportador” é sério?
Não. O animal é geralmente saudável, mas pode transmitir a mutação ao seu descendência.
E se um animal for “afetado”?
Ele carrega duas cópias mutadas. Os sinais clínicos são esperados dependendo a doença. Não deveria ser criado.
Por que existem diferenças entre homem/mulher?
Algumas doenças estão ligadas ao sexo, pelo que a sua expressão varia dependendo do sexo do animal.
Prever descendência
N/N (nao-portador)
N/GM2-JD (Operadora)
GM2-JD/GM2-JD (Afetado)
Perguntas frequentes sobre testes de DNA
O que este teste de DNA detecta?
This DNA test detects the mutation associated with Gangliosidosis Gm2 In Japanese Domestic (GM2-JD) in order to identify clear, carrier, or at-risk animals.
Por que testar um animal reprodutor?
Os testes de DNA ajudam os criadores a planejar acasalamentos mais seguros e a reduzir o risco de transmissão da mutação aos descendentes.
Qual é o modo de herança deste teste?
O modo de herança relatado para este teste é Autossômico Recessivo.
Qual mutação é analisada neste teste?
This test analyses the mutation HEXB c.667C>T.
Um animal portador é necessariamente afetado?
Não necessariamente. A interpretação depende do padrão de herança e do genótipo resultante.
Referências
Kanae Y, Endoh D, Yamato O, Hayashi D, Matsunaga S, Ogawa H, Maede Y, Hayashi M. Nonsense mutation of feline beta-hexosaminidase beta-subunit (HEXB) gene causing Sandhoff disease in a family of Japanese domestic cats. Res Vet Sci. 2007 Feb;82(1):54-60. doi: 10.1016/j.rvsc.2006.05.007. Epub 2006 Jul 26.