Results for "supportive care"
Conditions Encyclopedia Entry 1777484284
** This article provides an in-depth overview of **Mitochondrial Myopathies**, a group of rare genetic disorders affecting the mitochondria, the energy-producing structures within cells. **CONTENT:** ### Overview Mitochondrial Myopathies (MM) are a group of rare genetic disorders that affect the mitochondria, the energy-producing structures within cells. These disorders are caused by mutations in the mitochondrial DNA, which is separate from the DNA found in the cell's nucleus. Mitochondrial myopathies are characterized by muscle weakness, fatigue, and other symptoms that can vary in severity and impact daily life. The disorders are often inherited in an autosomal dominant or maternal pattern, meaning that a single copy of the mutated gene is enough to cause the condition, and it is passed down from mother to child. Mitochondrial myopathies are a heterogeneous group of disorders, with over 150 different mutations identified in the mitochondrial DNA. The most common forms of MM include **Myoclonic Epilepsy with Ragged-Red Fibers (MERRF)**, **Kearns-Sayre Syndrome (KSS)**, and **Chronic Progressive External Ophthalmoplegia (CPEO)**. Each of these disorders has distinct symptoms and characteristics, but they all share a common underlying cause: damage to the mitochondria. ### History/Background The study of mitochondrial myopathies began in the 1960s, when researchers first identified the relationship between mitochondrial DNA mutations and muscle disease. Since then, advances in genetic testing and molecular biology have led to a greater understanding of the disorders and their underlying causes. In 1988, the first mitochondrial DNA mutation was identified in a patient with MERRF, marking a significant milestone in the field. Today, researchers continue to study mitochondrial myopathies, seeking to develop new treatments and improve the lives of those affected. ### Key Information Mitochondrial myopathies are characterized by a range of symptoms, including: * Muscle weakness and wasting * Fatigue and exercise intolerance * Eye movement disorders * Hearing loss * Cognitive impairment * Seizures and epilepsy The disorders can be inherited in an autosomal dominant or maternal pattern, and they often affect multiple family members. Diagnosis typically involves genetic testing, muscle biopsy, and imaging studies. Treatment options are limited, and management focuses on symptom relief and supportive care. ### Significance Mitochondrial myopathies are a significant public health concern, affecting an estimated 1 in 5,000 people worldwide. The disorders can have a profound impact on quality of life, causing significant disability and reducing life expectancy. Research into mitochondrial myopathies has also led to a greater understanding of the role of mitochondria in human disease, with implications for the study of other disorders, such as cancer and neurodegenerative disease. **INFOBOX:** - Name: Mitochondrial Myopathies - Type: Rare genetic disorder - Date: 1960s (first identified) - Location: Global - Known For: Unique genetic cause and complex symptoms **TAGS:** Mitochondrial myopathies, genetic disorders, muscle disease, rare diseases, mitochondrial DNA, genetic testing, molecular biology, exercise intolerance, eye movement disorders, hearing loss, cognitive impairment, seizures, epilepsy, supportive care, quality of life, public health concern, cancer, neurodegenerative disease.
Health & MedicineChemotherapy
Chemotherapy is a systemic cancer treatment that uses anti‑cancer drugs, alone or in combination, to kill or control malignant cells.
Health & MedicineConditions Encyclopedia Entry 1778479579
** **Mitochondrial Myopathies** are a group of rare genetic disorders characterized by progressive muscle weakness and degeneration, primarily affecting the skeletal muscles. **CONTENT:** ### Overview Mitochondrial Myopathies (MM) are a subset of mitochondrial disorders, which are caused by mutations in the mitochondrial DNA (mtDNA). Mitochondria are the energy-producing structures within cells, responsible for generating adenosine triphosphate (ATP), the primary energy source for muscle contraction. In MM, the impaired energy production leads to muscle weakness, fatigue, and degeneration. These disorders are often inherited in an autosomal dominant or maternal pattern, meaning they can be passed down from either parent or only from the mother. There are several types of Mitochondrial Myopathies, including: - **Myoclonic Epilepsy with Ragged-Red Fibers (MERRF)**: characterized by myoclonic seizures, muscle weakness, and ragged-red fibers in muscle biopsies. - **Kearns-Sayre Syndrome (KSS)**: marked by progressive external ophthalmoplegia, muscle weakness, and cardiac conduction abnormalities. - **NARP Syndrome**: associated with neuropathy, ataxia, and retinitis pigmentosa. - **Leigh Syndrome**: a severe disorder affecting the brain and muscles, often with a poor prognosis. ### History/Background The first reported case of Mitochondrial Myopathies dates back to 1956, when a child with progressive muscle weakness and ragged-red fibers was described. However, it wasn't until the 1980s that the genetic basis of these disorders was identified. The discovery of mtDNA mutations in patients with Mitochondrial Myopathies led to a better understanding of the pathophysiology and the development of diagnostic tests. ### Key Information Mitochondrial Myopathies are caused by mutations in the mtDNA, which is inherited from the mother. These mutations can lead to impaired energy production, resulting in muscle weakness, fatigue, and degeneration. The symptoms and progression of the disease vary depending on the specific type of MM. **Key Facts:** - **Prevalence:** Estimated to affect 1 in 5,000 to 1 in 10,000 people worldwide. - **Inheritance:** Autosomal dominant or maternal inheritance. - **Symptoms:** Progressive muscle weakness, fatigue, muscle degeneration, and various systemic symptoms. - **Diagnosis:** Genetic testing, muscle biopsy, and imaging studies. - **Treatment:** No cure, but supportive care, physical therapy, and medication may help manage symptoms. ### Significance Mitochondrial Myopathies are a significant cause of muscle weakness and degeneration, affecting individuals and families worldwide. Understanding the genetic basis of these disorders has led to improved diagnostic tools and management strategies. However, more research is needed to develop effective treatments and improve the quality of life for those affected by Mitochondrial Myopathies. **INFOBOX:** - **Name:** Mitochondrial Myopathies - **Type:** Genetic disorder - **Date:** First reported case in 1956 - **Location:** Worldwide - **Known For:** Progressive muscle weakness and degeneration due to impaired energy production **TAGS:** Mitochondrial Myopathies, genetic disorder, muscle weakness, fatigue, muscle degeneration, mitochondrial DNA, autosomal dominant inheritance, maternal inheritance, diagnostic testing, supportive care, physical therapy, medication.