Corneal Dystrophy, Juvenile Epithelial of Meesmann
Corneal Dystrophies, Hereditary
Keratin-12
Fuchs' Endothelial Dystrophy
Muscular Dystrophies
Collagen Type VIII
Myotonic Dystrophy
Cornea
Muscular Dystrophy, Duchenne
Corneal Opacity
Pedigree
Descemet Membrane
Extracellular Matrix Proteins
Bowman Membrane
Muscular Dystrophy, Animal
Keratoplasty, Penetrating
Keratoconus
Keratan Sulfate
Corneal Stroma
Corneal Transplantation
Mutation
Current Procedural Terminology
Retinal Dystrophies
Dimethylallyltranstransferase
Transforming Growth Factor beta
Muscular Dystrophy, Facioscapulohumeral
Keratin-3
Dystrophin
Mutation, Missense
Exons
Sulfotransferases
Heterozygote
A novel mutation of the Keratin 12 gene responsible for a severe phenotype of Meesmann's corneal dystrophy. (1/5)
PURPOSE: To determine if a mutation within the coding region of the keratin 12 gene (KRT12) is responsible for a severe form of Meesmann's corneal dystrophy. METHODS: A family with clinically identified Meesmann's corneal dystrophy was recruited and studied. Electron microscopy was performed on scrapings of corneal epithelial cells from the proband. Mutations in the KRT12 gene were sought using direct genomic sequencing of leukocyte DNA from two affected and two unaffected family members. Subsequently, the observed mutation was screened in all available family members using polymerase chain reaction and direct sequencing. RESULTS: A heterozygous missense mutation (Arg430Pro) was found in exon 6 of KRT12 in all 14 affected individuals studied. Unaffected family members and 100 normal controls were negative for this mutation. CONCLUSIONS: We have identified a novel mutation in the KRT12 gene that is associated with a symptomatic phenotype of Meesmann's corneal dystrophy. This mutation results in a substitution of proline for arginine in the helix termination motif that may disrupt the normal helix, leading to a dramatic structural change of the keratin 12 protein. (+info)Genetics of Meesmann corneal dystrophy: a novel mutation in the keratin 3 gene in an asymptomatic family suggests genotype-phenotype correlation. (2/5)
PURPOSE: Juvenile epithelial corneal dystrophy of Meesmann (MCD, OMIM 122100) is a dominantly inherited disorder characterized by fragility of the anterior corneal epithelium and intraepithelial microcyst formation. Although the disease is generally mild and affected individuals are often asymptomatic, some suffer from recurrent erosions leading to lacrimation, photophobia, and deterioration in visual acuity. MCD is caused by mutations in keratin 3 (KRT3) or keratin 12 (KRT12) genes, which encode cornea-specific cytoskeletal proteins. Seventeen mutations in KRT12 and two in KRT3 have been described so far. The purpose of this study was to investigate the genetic background of MCD in a Polish family. METHODS: We report on a three-generation family with MCD. Epithelial lesions characteristic for MCD were visualized with slit-lamp examination and confirmed by in vivo confocal microscopy. Using genomic DNA as a template, all coding regions of KRT3 and KRT12 were amplified and sequenced. Presence of the mutation was verified with restriction endonuclease digestion. RESULTS: In the proband, direct sequencing of the polymerase chain reaction (PCR) product from amplified coding regions of KRT3 and KRT12 revealed a novel 1493A>T heterozygous missense mutation in exon 7 of KRT3, which predicts the substitution of glutamic acid for valine at codon 498 (E498V). Using PCR-Restriction Fragment Length Polymorphism (RFLP) analysis, the mutation was demonstrated to segregate with the disease (four affected members, three non-affected) and to be absent in 100 controls from the Polish population, indicating that it is not a common polymorphism. CONCLUSIONS: Location of the E498V mutation emphasizes the functional relevance of the highly conserved boundary motifs at the COOH-terminus of the alpha-helical rod domain in keratin 3 (K3). (+info)Development of allele-specific therapeutic siRNA in Meesmann epithelial corneal dystrophy. (3/5)
(+info)Severe Meesmann's epithelial corneal dystrophy phenotype due to a missense mutation in the helix-initiation motif of keratin 12. (4/5)
(+info)Allele-specific siRNA silencing for the common keratin 12 founder mutation in Meesmann epithelial corneal dystrophy. (5/5)
(+info)Corneal dystrophy, juvenile epithelial of Meesmann is a rare genetic disorder that affects the outermost layer of the cornea, called the epithelium. It is characterized by the formation of small, clear bumps or nodules on the cornea, which can cause vision problems and discomfort. The condition is usually inherited in an autosomal recessive pattern, meaning that an individual must inherit two copies of the mutated gene (one from each parent) in order to develop the disorder. It is typically diagnosed in childhood or adolescence, and symptoms may include tearing, redness, and sensitivity to light. Treatment for corneal dystrophy, juvenile epithelial of Meesmann may include the use of lubricating eye drops or ointments to relieve symptoms, as well as the use of contact lenses to improve vision. In some cases, surgery may be necessary to remove the nodules or to transplant the affected cornea.
Hereditary corneal dystrophies are a group of genetic disorders that affect the cornea, which is the clear, dome-shaped surface at the front of the eye. These disorders are characterized by the accumulation of abnormal deposits of proteins or lipids within the cornea, leading to changes in its structure and function. Hereditary corneal dystrophies can be inherited in an autosomal dominant, autosomal recessive, or X-linked manner. They can cause a range of symptoms, including blurred vision, sensitivity to light, tearing, and eye pain. In some cases, the dystrophies can progress to cause vision loss or even blindness. There are several different types of hereditary corneal dystrophies, including lattice dystrophy, granular dystrophy, macular dystrophy, and stromal dystrophy. Treatment options for these disorders may include eye drops, ointments, or surgery, depending on the specific type and severity of the dystrophy.
Keratin-12 (KRT12) is a type of keratin protein that is primarily expressed in the epithelial cells of the gastrointestinal tract, particularly in the esophagus, stomach, and small intestine. Keratins are a family of proteins that form the structural framework of epithelial cells, providing them with strength and resilience. Keratin-12 is particularly important in the lining of the gastrointestinal tract, where it helps to protect against damage from digestive enzymes and acids. It is also involved in the regulation of cell proliferation and differentiation, as well as in the maintenance of the integrity of the epithelial barrier. Abnormalities in the expression or function of keratin-12 have been linked to a number of gastrointestinal disorders, including Barrett's esophagus, esophageal cancer, and inflammatory bowel disease. In addition, mutations in the KRT12 gene have been associated with a rare inherited disorder called epidermolysis bullosa simplex, which is characterized by fragile skin and mucous membranes.
Fuchs' endothelial dystrophy is a degenerative disorder of the endothelial cells lining the inner surface of the cornea, which is the clear front part of the eye. The condition is named after the German ophthalmologist who first described it in 1911. The endothelial cells play a critical role in maintaining the shape and clarity of the cornea by regulating the flow of fluid and nutrients into and out of the cornea. In Fuchs' endothelial dystrophy, the endothelial cells become damaged and lose their ability to function properly, leading to swelling and clouding of the cornea. Symptoms of Fuchs' endothelial dystrophy may include blurred vision, sensitivity to light, tearing, and a feeling of grittiness or sand in the eye. The condition typically progresses slowly over time and can eventually lead to vision loss if left untreated. Treatment for Fuchs' endothelial dystrophy may include the use of eye drops to reduce swelling and inflammation, as well as the use of contact lenses or surgery to improve vision. In some cases, a corneal transplant may be necessary to replace the damaged endothelial cells and restore vision.
Muscular dystrophies are a group of genetic disorders that cause progressive muscle weakness and wasting. These disorders are caused by mutations in genes that are responsible for producing proteins that are essential for maintaining the structure and function of muscle fibers. There are many different types of muscular dystrophies, each with its own specific genetic cause and pattern of inheritance. Some of the most common types of muscular dystrophy include Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD), facioscapulohumeral muscular dystrophy (FSHD), and myotonic dystrophy (DM). The symptoms of muscular dystrophy can vary widely depending on the type and severity of the disorder. Common symptoms include muscle weakness, difficulty with movement, muscle stiffness, and fatigue. In some cases, muscular dystrophy can also affect other organs, such as the heart and lungs. There is currently no cure for muscular dystrophy, but there are treatments available that can help manage symptoms and slow the progression of the disease. These may include physical therapy, medications, and assistive devices such as braces or wheelchairs.
Collagen Type VIII is a protein that is found in the extracellular matrix of connective tissues in the body. It is a component of the basement membrane, which is a thin layer of connective tissue that separates epithelial cells from underlying connective tissue. Collagen Type VIII is also a component of the blood-brain barrier, which helps to regulate the movement of substances between the blood and the brain. In the medical field, Collagen Type VIII is of interest because it is involved in the development and maintenance of various tissues and organs, including the skin, joints, and blood vessels. It is also thought to play a role in the development of certain diseases, such as osteoarthritis and atherosclerosis. Research is ongoing to better understand the function of Collagen Type VIII and its potential role in disease.
Myotonic dystrophy is a genetic disorder that affects the muscles and causes progressive muscle weakness and stiffness. It is also known as Steinert's disease or myotonic dystrophy type 1. The disorder is caused by a mutation in the DMPK gene, which leads to the production of an abnormal protein that accumulates in the muscles and disrupts their normal function. Myotonic dystrophy is inherited in an autosomal dominant pattern, which means that a person only needs to inherit one copy of the mutated gene from one parent to develop the disorder. The severity of the symptoms can vary widely among affected individuals, and the disease can affect different parts of the body in different ways. Symptoms of myotonic dystrophy can include muscle stiffness and weakness, difficulty with speech and swallowing, cataracts, and heart problems. The disease can also cause problems with cognitive function and emotional well-being. There is currently no cure for myotonic dystrophy, but treatments can help manage symptoms and improve quality of life. These may include physical therapy, medications to relieve muscle stiffness and pain, and surgery to correct eye problems.
Duchenne Muscular Dystrophy (DMD) is a genetic disorder that affects muscle strength and function. It is caused by mutations in the dystrophin gene, which is responsible for producing a protein called dystrophin that helps to maintain the integrity of muscle fibers. Without dystrophin, muscle fibers become damaged and break down, leading to progressive muscle weakness and wasting. DMD primarily affects boys and is usually diagnosed in early childhood. The symptoms of DMD typically begin with difficulty in walking and running, which worsen over time. As the disease progresses, affected individuals may experience difficulty in climbing stairs, getting up from a seated position, and even breathing. The disease can also affect the heart and respiratory muscles, leading to serious complications. There is currently no cure for DMD, but there are treatments available that can help manage symptoms and improve quality of life. These may include physical therapy, assistive devices, and medications to help manage muscle stiffness and pain. In some cases, a heart transplant may be necessary to treat complications related to heart muscle damage.
Corneal opacity is a medical condition that refers to a decrease in transparency or clarity of the cornea, which is the clear, dome-shaped surface at the front of the eye. The cornea is responsible for refracting light and allowing it to pass through the eye to the retina, where it is converted into electrical signals that are sent to the brain for interpretation. Corneal opacity can be caused by a variety of factors, including injury, infection, inflammation, scarring, and certain diseases such as keratoconus or Fuchs' dystrophy. It can also be a symptom of other eye conditions, such as cataracts or glaucoma. The severity of corneal opacity can vary widely, ranging from mild cloudiness or haze to complete opacity, which can result in vision loss or blindness. Treatment options depend on the underlying cause and severity of the opacity, and may include medications, surgery, or the use of artificial corneas or other devices to improve vision.
Extracellular matrix (ECM) proteins are a diverse group of proteins that are secreted by cells and form a complex network within the extracellular space. These proteins provide structural support to cells and tissues, regulate cell behavior, and play a crucial role in tissue development, homeostasis, and repair. ECM proteins are found in all tissues and organs of the body and include collagens, elastin, fibronectin, laminins, proteoglycans, and many others. These proteins interact with each other and with cell surface receptors to form a dynamic and highly regulated ECM that provides a physical and chemical environment for cells to thrive. In the medical field, ECM proteins are important for understanding the development and progression of diseases such as cancer, fibrosis, and cardiovascular disease. They are also used in tissue engineering and regenerative medicine to create artificial ECMs that can support the growth and function of cells and tissues. Additionally, ECM proteins are used as diagnostic and prognostic markers in various diseases, and as targets for drug development.
Muscular dystrophy is a group of genetic disorders that cause progressive muscle weakness and wasting. In animals, muscular dystrophy can occur in a variety of species, including dogs, cats, horses, and cattle. The symptoms of muscular dystrophy in animals can vary depending on the specific type of the disorder and the affected muscle groups. Common signs of muscular dystrophy in animals include muscle weakness, difficulty walking or moving, and a characteristic wobbly gait. In some cases, animals with muscular dystrophy may also experience muscle stiffness, muscle pain, and muscle spasms. Treatment for muscular dystrophy in animals typically involves managing the symptoms of the disorder and providing supportive care to improve the animal's quality of life.
Keratoconus is a progressive eye condition that affects the shape of the cornea, which is the clear, dome-shaped surface at the front of the eye. In people with keratoconus, the cornea becomes thinner and bulges outward, creating a cone-like shape. This can cause vision problems, including distorted vision, difficulty seeing at night, and sensitivity to light. Keratoconus can affect people of all ages, but it is most common in teenagers and young adults. The exact cause of keratoconus is not known, but it is thought to be related to genetics and environmental factors such as eye rubbing or exposure to strong wind or sand. Treatment for keratoconus depends on the severity of the condition and the impact it has on vision. In mild cases, glasses or contact lenses may be sufficient to correct vision. In more severe cases, a type of contact lens called a rigid gas-permeable lens or a corneal transplant may be necessary.
Keratan sulfate (KS) is a type of glycosaminoglycan (GAG) that is found in the extracellular matrix of connective tissues throughout the body. It is particularly abundant in the cornea, skin, and joint cartilage. In the medical field, KS is important because it plays a role in the structure and function of many tissues. For example, in the cornea, KS helps to maintain its transparency and elasticity, while in joint cartilage, it helps to provide shock absorption and lubrication. Abnormalities in KS production or metabolism can lead to a variety of diseases and conditions, including corneal dystrophies, osteoarthritis, and certain types of cancer. Therefore, understanding the biology of KS and its role in health and disease is an important area of research in the medical field.
Familial amyloidosis is a rare genetic disorder that causes the body to produce abnormal proteins called amyloid fibrils. These fibrils accumulate in various organs and tissues, leading to damage and dysfunction. The condition is inherited in an autosomal dominant pattern, meaning that an affected individual has a 50% chance of passing the gene to each of their offspring. There are several types of familial amyloidosis, including hereditary transthyretin amyloidosis, hereditary light chain amyloidosis, and familial Mediterranean fever-related amyloidosis. Symptoms of familial amyloidosis can vary depending on the affected organ or tissue. Common symptoms include swelling in the legs and feet, heart problems, kidney failure, and gastrointestinal issues. Treatment options may include medications to manage symptoms, organ transplantation, and supportive care.
Retinal dystrophies are a group of inherited eye disorders that affect the retina, the light-sensitive layer at the back of the eye. These disorders can cause progressive vision loss, often leading to blindness, and can affect both the central and peripheral vision. Retinal dystrophies are caused by mutations in genes that are essential for the normal functioning of the retina. These mutations can affect various aspects of retinal function, including the production of visual pigments, the transmission of electrical signals, and the maintenance of the structural integrity of the retina. There are many different types of retinal dystrophies, each with its own specific characteristics and genetic cause. Some of the most common types include retinitis pigmentosa, Stargardt disease, and cone-rod dystrophy. These disorders can be inherited in an autosomal dominant, autosomal recessive, or X-linked pattern, depending on the specific gene involved. Treatment for retinal dystrophies is often focused on managing symptoms and slowing the progression of the disease. This may include the use of visual aids, such as glasses or contact lenses, and low-vision rehabilitation services. In some cases, experimental gene therapy may be an option for certain types of retinal dystrophies.
Dimethylallyltranstransferase (DMAT) is an enzyme that plays a crucial role in the biosynthesis of isoprenoids, a group of organic compounds that are essential for various biological processes. DMAT catalyzes the transfer of a dimethylallyl group from dimethylallyl pyrophosphate (DMAPP) to isopentenyl pyrophosphate (IPP), which is the first step in the mevalonate pathway for isoprenoid biosynthesis. DMAT is a key enzyme in the production of terpenoids, which are a diverse group of compounds that include steroids, hormones, and many plant and animal metabolites. DMAT is also involved in the biosynthesis of other important molecules, such as ubiquinone, which is a coenzyme involved in energy metabolism. In the medical field, DMAT has been studied as a potential target for the development of new drugs for the treatment of various diseases, including cancer, cardiovascular disease, and infectious diseases. DMAT inhibitors have been shown to have anti-cancer activity by disrupting the production of essential isoprenoids, which can lead to the death of cancer cells. Additionally, DMAT inhibitors have been shown to have anti-inflammatory and anti-viral activity, making them potential candidates for the treatment of a variety of diseases.
Transforming Growth Factor beta (TGF-β) is a family of cytokines that play a crucial role in regulating cell growth, differentiation, and migration. TGF-βs are secreted by a variety of cells, including immune cells, fibroblasts, and epithelial cells, and act on neighboring cells to modulate their behavior. TGF-βs have both pro-inflammatory and anti-inflammatory effects, depending on the context in which they are released. They can promote the differentiation of immune cells into effector cells that help to fight infections, but they can also suppress the immune response to prevent excessive inflammation. In addition to their role in immune regulation, TGF-βs are also involved in tissue repair and fibrosis. They can stimulate the production of extracellular matrix proteins, such as collagen, which are essential for tissue repair. However, excessive production of TGF-βs can lead to fibrosis, a condition in which excessive amounts of connective tissue accumulate in the body, leading to organ dysfunction. Overall, TGF-βs are important signaling molecules that play a critical role in regulating a wide range of cellular processes in the body.
Facioscapulohumeral muscular dystrophy (FSHD) is a genetic disorder that affects the muscles of the face, shoulder blades, and upper arms. It is caused by a mutation in the D4Z4 gene on chromosome 4, which leads to the weakening and wasting of muscles over time. FSHD is the most common form of muscular dystrophy that affects adults, and it is typically diagnosed in people in their 20s or 30s. The symptoms of FSHD can vary widely, but they often include difficulty with facial expressions, weakness in the shoulder blades and upper arms, and difficulty with walking. There is currently no cure for FSHD, but there are treatments that can help manage the symptoms and slow the progression of the disease.
Corneal diseases refer to any medical conditions that affect the cornea, which is the clear, dome-shaped outer layer of the eye that covers the iris, pupil, and anterior chamber. The cornea plays a crucial role in focusing light onto the retina, which is the light-sensitive tissue at the back of the eye. Corneal diseases can be caused by a variety of factors, including infections, injuries, genetic disorders, autoimmune diseases, and degenerative conditions. Some common examples of corneal diseases include: 1. Keratitis: Inflammation of the cornea, which can be caused by infections, injuries, or other factors. 2. Corneal dystrophies: A group of genetic disorders that cause the cornea to thicken or become cloudy. 3. Corneal ulcers: Open sores on the cornea that can be caused by infections, injuries, or other factors. 4. Corneal scars: Scarring of the cornea that can affect vision. 5. Corneal dystrophies: A group of genetic disorders that cause the cornea to thicken or become cloudy. 6. Corneal dystrophies: A group of genetic disorders that cause the cornea to thicken or become cloudy. 7. Corneal dystrophies: A group of genetic disorders that cause the cornea to thicken or become cloudy. 8. Corneal dystrophies: A group of genetic disorders that cause the cornea to thicken or become cloudy. 9. Corneal dystrophies: A group of genetic disorders that cause the cornea to thicken or become cloudy. 10. Corneal dystrophies: A group of genetic disorders that cause the cornea to thicken or become cloudy. Treatment for corneal diseases depends on the specific condition and its severity. In some cases, treatment may involve the use of eye drops, ointments, or other medications to manage symptoms or prevent infection. In more severe cases, surgery may be necessary to restore vision or prevent further damage to the eye.
Keratin-3 (KRT3) is a type of keratin protein that is expressed in the outermost layer of the skin, known as the stratum corneum. It is also found in the hair and nails. KRT3 is a structural protein that helps to provide strength and protection to the skin, hair, and nails. In the medical field, KRT3 is often studied in relation to various skin conditions, such as psoriasis and eczema. Abnormalities in KRT3 expression or function have been linked to the development of these conditions. Additionally, KRT3 is a potential biomarker for certain types of cancer, such as squamous cell carcinoma of the skin.
Dystrophin is a protein that plays a crucial role in maintaining the structural integrity of muscle fibers in the human body. It is encoded by the DMD gene, which is located on the X chromosome. Dystrophin is responsible for linking the inner and outer layers of muscle fibers, providing them with stability and preventing them from tearing during muscle contraction. When the DMD gene is mutated or absent, dystrophin cannot be produced, leading to a deficiency in the protein. This deficiency is the underlying cause of Duchenne muscular dystrophy (DMD), a severe and progressive muscle-wasting disorder that primarily affects boys. DMD is characterized by muscle weakness and wasting, which can lead to difficulty walking, breathing, and even death in severe cases. In addition to DMD, dystrophin deficiency can also cause other forms of muscular dystrophy, such as Becker muscular dystrophy and dilated cardiomyopathy.
Sulfotransferases are a group of enzymes that transfer a sulfate group from a donor molecule to an acceptor molecule. These enzymes play important roles in the metabolism of many drugs, hormones, and other substances in the body. They are also involved in the detoxification of harmful substances, such as environmental pollutants and toxins. Sulfotransferases are found in many tissues throughout the body, including the liver, kidney, and brain. They are classified into different families based on their substrate specificity and mechanism of action. Some of the most well-known families of sulfotransferases include the cytosolic sulfotransferases (SULTs) and the membrane-bound sulfotransferases (SULTs). In the medical field, sulfotransferases are important for understanding the metabolism and pharmacology of drugs. They can affect the efficacy and toxicity of drugs by modifying their chemical structure and altering their interactions with receptors and enzymes. Sulfotransferases are also being studied as potential targets for the development of new drugs for the treatment of various diseases, including cancer, cardiovascular disease, and neurological disorders.
Corneal dystrophy
List of skin conditions
List of OMIM disorder codes
Meesmann corneal dystrophy: MedlinePlus Genetics
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autosomal dominant | Hereditary Ocular Diseases
Meesmann's | Vagelos College of Physicians and Surgeons
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Aniridia
Meesmann corneal dystrophy - About the Disease - Genetic and Rare Diseases Information Center
Keratin 12 missense mutation induces the unfolded protein response and apoptosis in Meesmann epithelial corneal dystrophy -...
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Descriptors in 2013 MeSH. Preferred term only. December 14, 2012
I ntegrated
Hereditary epithelial dystrophy1
- Autosomal dominantly inherited and also called juvenile hereditary epithelial dystrophy. (columbia.edu)
Meesmann's3
- Molecular genetics of Meesmann's corneal dystrophy: ancestral and novel mutations in keratin 12 (K12) and complete sequence of the human KRT12 gene. (medlineplus.gov)
- Ehlers N, Hjortdal J, Nielsen K, Thiel HJ, Orntoft T. Phenotypic variability in Meesmann's dystrophy: clinical review of the literature and presentation of a family genetically identical to the original family. (medlineplus.gov)
- Mutations in cornea-specific keratin K3 or K12 genes cause Meesmann's corneal dystrophy. (medlineplus.gov)
Autosomal1
- Description Pachyonychia congenita (PC) is an autosomal dominant genodermatosis with the main clinical features of hypertrophic nail dystrophy, painful and highly debilitating plantar keratoderma, oral leukokeratosis, and a variety of epidermal cysts. (findzebra.com)
Symptoms1
- When the cysts rupture, they cause eye irritation and the other symptoms of Meesmann corneal dystrophy. (medlineplus.gov)
Cysts3
- This condition is characterized by the formation of tiny round cysts in the outermost layer of the cornea, called the corneal epithelium. (medlineplus.gov)
- In people with Meesmann corneal dystrophy, cysts can appear as early as the first year of life. (medlineplus.gov)
- Mutations in either the KRT12 or KRT3 gene weaken this framework, causing the corneal epithelium to become fragile and to develop the cysts that characterize the disorder. (medlineplus.gov)
Disease1
- Meesmann corneal dystrophy is an eye disease that affects the cornea, which is the clear front covering of the eye. (medlineplus.gov)
MECD1
- Meesmann corneal dystrophy (MECD) is a rare genetic condition affecting the clear front covering of the eye (cornea). (nih.gov)
Autosomal dominant1
- An autosomal dominant form of hereditary corneal dystrophy due to a defect in cornea-specific KERATIN formation. (nih.gov)
Epithelium3
- This condition is characterized by the formation of tiny round cysts in the outermost layer of the cornea, called the corneal epithelium. (medlineplus.gov)
- These genes provide instructions for making proteins called keratin 12 and keratin 3, which are found in the corneal epithelium. (medlineplus.gov)
- Mutations in either the KRT12 or KRT3 gene weaken this framework, causing the corneal epithelium to become fragile and to develop the cysts that characterize the disorder. (medlineplus.gov)
Genetic1
- Meesmann corneal dystrophy is a genetic disease. (nih.gov)
Cornea2
- Meesmann corneal dystrophy is an eye disease that affects the cornea, which is the clear front covering of the eye. (medlineplus.gov)
- Mutations in cornea-specific keratin K3 or K12 genes cause Meesmann's corneal dystrophy. (medlineplus.gov)
Keratin1
- Molecular genetics of Meesmann's corneal dystrophy: ancestral and novel mutations in keratin 12 (K12) and complete sequence of the human KRT12 gene. (medlineplus.gov)
Literature1
- Ehlers N, Hjortdal J, Nielsen K, Thiel HJ, Orntoft T. Phenotypic variability in Meesmann's dystrophy: clinical review of the literature and presentation of a family genetically identical to the original family. (medlineplus.gov)