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Topic Review
Familial Dysautonomia
Familial dysautonomia is a genetic disorder that affects the development and survival of certain nerve cells. The disorder disturbs cells in the autonomic nervous system, which controls involuntary actions such as digestion, breathing, production of tears, and the regulation of blood pressure and body temperature. It also affects the sensory nervous system, which controls activities related to the senses, such as taste and the perception of pain, heat, and cold. Familial dysautonomia is also called hereditary sensory and autonomic neuropathy, type III.
  • 968
  • 25 Dec 2020
Topic Review
Autoimmune Polyendocrinopathy-candidiasis-ectodermal Dystrophy
Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is an inherited condition that affects many of the body's organs. It is one of many autoimmune diseases, which are disorders that occur when the immune system malfunctions and attacks the body's own tissues and organs by mistake.
  • 967
  • 24 Dec 2020
Topic Review
Alpha-mannosidosis
Alpha-mannosidosis is a rare inherited disorder that causes problems in many organs and tissues of the body. Affected individuals may have intellectual disability, distinctive facial features, and skeletal abnormalities. Characteristic facial features can include a large head, prominent forehead, low hairline, rounded eyebrows, large ears, flattened bridge of the nose, protruding jaw, widely spaced teeth, overgrown gums, and large tongue. The skeletal abnormalities that can occur in this disorder include reduced bone density (osteopenia), thickening of the bones at the top of the skull (calvaria), deformations of the bones in the spine (vertebrae), knock knees, and deterioration of the bones and joints.
  • 966
  • 24 Dec 2020
Topic Review
EZH2 Gene
Enhancer of zeste 2 polycomb repressive complex 2 subunit
  • 966
  • 29 Dec 2020
Topic Review
Pathophysiology of Hereditary Hemorrhagic Telangiectasia
Hereditary hemorrhagic telangiectasia is an inherited disease related to an alteration in angiogenesis, manifesting as cutaneous telangiectasias and epistaxis. As complications, it presents vascular malformations in organs such as the lung, liver, digestive tract, and brain. 
  • 966
  • 30 Sep 2022
Topic Review
Uncombable Hair Syndrome
Uncombable hair syndrome is a condition that is characterized by dry, frizzy hair that cannot be combed flat. 
  • 965
  • 23 Dec 2020
Topic Review
TRIP11 Gene
Thyroid hormone receptor interactor 11: The TRIP11 gene provides instructions for making a protein known as Golgi microtubule-associated protein 210 (GMAP-210). 
  • 965
  • 25 Dec 2020
Topic Review
ADCY5-related Dyskinesia
ADCY5-related dyskinesia is a movement disorder; the term "dyskinesia" refers to abnormal involuntary movements. The abnormal movements that occur in ADCY5-related dyskinesia typically appear as sudden (paroxysmal) jerks, twitches, tremors, muscle tensing (dystonia), or writhing (choreiform) movements, and can affect the limbs, neck, and face.
  • 964
  • 23 Dec 2020
Topic Review
Brooke-Spiegler Syndrome
Brooke-Spiegler syndrome is a condition involving multiple skin tumors that develop from structures associated with the skin (skin appendages), such as sweat glands and hair follicles. People with Brooke-Spiegler syndrome may develop several types of tumors, including growths called spiradenomas, trichoepitheliomas, and cylindromas. Spiradenomas develop in sweat glands. Trichoepitheliomas arise from hair follicles. The origin of cylindromas has been unclear; while previously thought to derive from sweat glands, they are now generally believed to begin in hair follicles. The tumors associated with Brooke-Spiegler syndrome are generally noncancerous (benign), but occasionally they may become cancerous (malignant). Affected individuals are also at increased risk of developing tumors in tissues other than skin appendages, particularly benign or malignant tumors of the salivary glands.
  • 964
  • 24 Dec 2020
Topic Review
GFAP Gene
Glial fibrillary acidic protein: The GFAP gene provides instructions for making a protein called glial fibrillary acidic protein. 
  • 964
  • 25 Dec 2020
Topic Review
Cholangiocarcinoma
Cholangiocarcinoma is a group of cancers that begin in the bile ducts. Bile ducts are branched tubes that connect the liver and gallbladder to the small intestine. They carry bile, which is a fluid that helps the body digest fats that are in food. Bile is made in the liver and stored in the gallbladder before being released in the small intestine after a person eats.
  • 963
  • 24 Dec 2020
Topic Review
Osteopetrosis
Osteopetrosis is a bone disease that makes bones abnormally dense and prone to breakage (fracture). Researchers have described several major types of osteopetrosis, which are usually distinguished by their pattern of inheritance: autosomal dominant, autosomal recessive, or X-linked. The different types of the disorder can also be distinguished by the severity of their signs and symptoms.
  • 963
  • 24 Dec 2020
Topic Review
F2 Gene
Coagulation factor II, thrombin
  • 963
  • 24 Dec 2020
Topic Review
Sex Determination Cascade in Silkworm
In insects, sex determination pathways involve three levels of master regulators: primary signals, which determine the sex; executors, which control sex-specific differentiation of tissues and organs; and transducers, which link the primary signals to the executors. The primary signals differ widely among insect species. In Diptera alone, several unrelated primary sex determiners have been identified. However, the doublesex (dsx) gene is highly conserved as the executor component across multiple insect orders. The transducer level shows an intermediate level of conservation. In many, but not all examined insects, a key transducer role is performed by transformer (tra), which controls sex-specific splicing of dsx. In Lepidoptera, studies of sex determination have focused on the lepidopteran model species Bombyx mori (the silkworm). In B. mori, the primary signal of sex determination cascade starts from Fem, a female-specific PIWI-interacting RNA, and its targeting gene Masc, which is apparently specific to and conserved among Lepidoptera. Tra has not been found in Lepidoptera. Instead, the B. mori PSI protein binds directly to dsx pre-mRNA and regulates its alternative splicing to produce male- and female-specific transcripts. 
  • 963
  • 19 May 2021
Topic Review
Glutaric Acidemia Type I
Glutaric acidemia type I (also called glutaric aciduria type I) is an inherited disorder in which the body is unable to process certain proteins properly. It is classified as an organic acid disorder, which is a condition that leads to an abnormal buildup of particular acids known as organic acids.
  • 962
  • 23 Dec 2020
Topic Review
VWF Gene
Von Willebrand factor
  • 962
  • 04 Jan 2021
Topic Review
Fumarase Deficiency
Fumarase deficiency is a condition that primarily affects the nervous system, especially the brain.
  • 961
  • 24 Dec 2020
Topic Review
APP Gene
amyloid beta precursor protein
  • 961
  • 24 Dec 2020
Topic Review
Ankylosing Spondylitis
Ankylosing spondylitis is a form of ongoing joint inflammation (chronic inflammatory arthritis) that primarily affects the spine. This condition is characterized by back pain and stiffness that typically appear in adolescence or early adulthood. Over time, back movement gradually becomes limited as the bones of the spine (vertebrae) fuse together. This progressive bony fusion is called ankylosis.
  • 961
  • 24 Dec 2020
Topic Review
Alpha 1-Antitrypsin
Alpha-1 antitrypsin (AAT) is a protein produced by the liver and released into the blood. As a known genetic cause of chronic obstructive pulmonary disease (COPD), alpha1-antitrypsin deficiency (AATD) can cause severe respiratory problems at a relatively young age. These problems are caused by decreased or absent levels of alpha1-antitrypsin (AAT), an antiprotease which is primarily functional in the respiratory system. If the levels of AAT fall below the protective threshold of 11 µM, the neutrophil-derived serine proteases neutrophil elastase (NE) and proteinase 3 (PR3), which are targets of AAT, are not sufficiently inhibited, resulting in excessive degradation of the lung parenchyma, increased inflammation, and increased susceptibility to infections. Because other therapies are still in the early phases of development, the only therapy currently available for AATD is AAT augmentation therapy. The controversy surrounding AAT augmentation therapy concerns its efficiency, as protection of lung function decline is not demonstrated, despite the treatment’s proven significant effect on lung density change in the long term. 
  • 961
  • 25 Feb 2021
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