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Harlequin ichthyosis genetics
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Harlequin Ichthyosis is a rare genetic mutation that affects the thickness of the skin. In order for a child to inherit this mutation, both of their parents must be carriers of the autosomal recessive gene. This gene will affect chromosome 2q35 by the deletion mutation. This mutation causes a changes in the ABCA12 gene. This gene produces the ABCA12 protein, which carries lipids to the epidermis of the skin. Without the ABC12 protein, the epidermis will not get the lipids needed to hold the skin together, which in result will cause water lose in the body. Not only is the ABCA12 protein used in the transportation of lipids, it is also a key component in the tissue of many major organs. For example the lungs, liver, and the stomach.
Also evident are molluscoid pseudotumors (fleshy lesions associated with scars) frequently found over pressure points (e.g. elbows) and subcutaneous spheroids, which are commonly mobile and palpable on the forearms and shins. Complications of joint hypermobility include sprains, dislocation are common in the shoulder, patella and temporomandibular joints Muscle hypotonia and slower gross motor development also can occur It is inherited in an autosomal dominant manner (Clarke, D., Skrocki-Czerpak, K., Neumann-Potash, L.). In the Hypermobile type of EDS, the joints of the body experience Hypermobility, which is the dominant clinical manifestation. General joint hypermobility affects large (elbows, knees) and small (fingers and toes) joints. Skin is hyperextensible, smooth/velvety, and bruising occurs easily as well.
I read the book Head Case by Sarah Aronson. Characters Frank Marder: Frank is the main character in the book. When he is seventeen, Frank makes a poor decision to drink and drive after a party. He crashes his car and kills two people and is paralyzed from the neck down. The struggle of dealing with his paralysis is a reminder of the accident that he must learn to cope with every day.
Ivy is the third generation in her family to be affected by achondroplasia. Her grandfather, her father, and her brother also have it. Achondroplasia is inherited as an autosomal dominant trait whereby only a single copy of the abnormal gene is required to cause achondroplasia. Nobody with the mutated gene can escape having achondroplasia. Many individuals with achondroplasia have normal parents, though. In this case, the genetic disorder would be caused by a de novo gene mutation. De novo gene mutations are associated with advanced paternal age, often defined as over age 35 years. If an individual with achondroplasia produce offspring with a normal individual, the chances of the offspring inheriting the mutant allele achondroplasia is 50%. If both of the parents have achondroplasia, the chances that their offspring will be of normal stature a...
Marfan syndrome (MFS) is known as an autosomal dominant hereditary disorder of connective tissue. Connective tissue helps support all parts of the body. It also helps control how the body grows and develops. Principal manifestations involve the ocular, skeletal, and cardiovascular systems. MFS is caused by mutations in the glycoprotein gene fibrillin-1 (FBN1) which is located on chromosome 15(Marcheix, 2008). There are many mutations that can cause Marfan Syndrome, but most common are missense in that they are single-nucleotide changes that result in the substitution of a single letter that leads to a single amino acid change in the protein. The change in the amino acid alters the shape of the fibrillin proteins. The irregularly-shaped protein then assembles into irregularly shaped microfibrils. Fibrillin is a major element of microfibrils, which store a protein called transforming growth factor beta (TGF-β), a critical growth factor. TGF-β helps control the proliferation of cells, cell differentiation, cell movement, and apoptosis. Microfibrils help regulate the availability of TGF-β, which is deactivated when stored in microfibrils and activated when released. The increase in TGF-β and abnormalities involving microfibrils causes problems in connective tissues throughout the body such as malformations and disfigurements of the ligaments, spinal dura, lens zonules, and lung airways(Marcheix, 2008). The heart is also greatly negatively impacted through a weakening of the aortic wall, progressive aortic dilatation or aortic disjointing can occur because of strain caused by left ventricular contractions.
Capture Myopathy? Not very often a diagnosis is termed liked this, especially in the field of human medicine, especially n the field of cardiology the where the term myopathy is revered as Cardiomyopathy. Myopathy is a disease that affects the muscles and causes weakness due to dysfunction of muscle fibers (1); Cardiomyopathy is of the same circumstance but deals primarily with the heart. Capture Myopathy is relative to many animals, especially mammals and provides a definitive correlation to humans and their potential medical prognosis of Cardiomyopathy. Capture Myopathy is a syndrome that that occurs within captive animals and causes rapid death through excessive adrenaline within the bloodstreams. (3) Capture Myopathy is quite often referred to as white muscle disease, the muscle when used causes a change of metabolism from using oxygen to using the stored energy within the muscle. The change up allows for lactic acid to build up and make its way into the bloodstream where it changes the homeostasis of the body: the body pH and the heart output. In essence, if the heart is inefficiently pumping the correct oxygen to the muscle, the muscle will begin to deteriorate and ultimately lead to damages to the kidney and the effector organs. (2) Animal Capture Myopathy is very relatable to human Takotsubo Cardiomyopathy, and thus this paper will aim to trace how animals are very relatable to humans even through the Cardiovascular System based on normal physiology and stress. (WHAT SHOULD I TALK ABOUT?)
A person looks at his hand; the palm facing up and forms his hand into a claw. He pays particular attention to his fingers and the feel of the tendons, ligaments, and muscles as he forms a claw. He imagines that this is happening to him over time. He has no control over it and cannot stop it. Unlike people with Dupuytren’s disease, he can straighten out his hands. I struggle with Dupuytren’s condition in both of my hands.
The size of the terminal deletion may vary from a subtle 1.4Mb to a classic 30Mb [5]. Earlier genotype-phenotype correlation studies reveal that the main characteristic feature of WHS - the ‘Greek warrior helmet face’, is caused due to the hemizygosity of the WHSC1 gene located in the WHS critical region (WHSCR).[5] Various other genes are also located in the WHSCR which are responsible for most other phenotypic features. More precisely, the Wolf-Hirschhorn syndrome critical region (WHSCR) is located at 4p16.3 region. Approximately 25% of the patients with WHS deletion in this region are not detectable by cytogenetic karyotyping [6]. Hence, FISH has to be performed.
It is caused by mutations to the cystic fibrosis transmembrane conductance regulator(CFTR) gene. Located on human chromosome 7, the CFTR gene is made up of 250,000 DNA nucleotides.
Achondroplasia (ACH) is a genetic disorder that is inherited as an autosomal dominant trait. This means that the disorder is not X or Y linked and is caused by the mutation of any other type of chromosome. Since ACH is a dominant disorder, meaning only one copy of a gene has a mutation or a mistake; it only takes one parent to cause the gene mutations. Dominant disorders are not inherited from mutated gene in the parent; they are new mutated genes that develop in the child, which is why people that suffer from Achondroplasia can have average-sized kids. ACH is a birth defect that is caused by mutations in the Fibroblast Growth Factor Receptor 3 (FGFR3) gene. FGFR3 is the protein responsible for lengthening bones. Its specific role is to slow down bone growth and balance the effects of other receptors and molecules that encourage growth. When FGFR3 is active, bone growth is slowed and when it’s inactive, bone growth accelerates. In people that suffer from Achondroplasia, FGFR3 is never in inactive so their bone growth never accelerates. Mutations on the FGFR3 gene are what prevent the growth of cartilage. When the receptor (R) of FGFR3 is missing, the growth factor can’t act properly and the growth...
Roger W. Harms, M. D. U.S. National Library of Medicine, National Library of Medicine. (2014). Oculocutaneous Albinism. Retrieved from U.S. National Library of Medicine website: http://ghr.nlm.nih.gov/condition/oculocutaneous-albinism
Torticollis is condition in which the neck is tilted backwards and twisted painfully. The head is usually inclined from a side while the chin is turned towards the opposite side. It is also called twisted neck. This situation can be inherited (present at birth). It can also be caused by damage to the muscles of the neck or of the blood supply problems. Sometimes torticollis resolves on its own. However, there exists the possibility of relapse.
NIH, National Center for Biotechnology Information. (2015). Cyclothymic Disorder, ncbi.nlm.nih.gov Web. 22 July 2015. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002517
Hypertrichosis, which is also known as Ambras Syndrome or Werewolf Syndrome, is excess growth of hair on parts of the body. Hypertrichosis can either be generalized meaning it covers the whole body or localized meaning it is only on a certain area. There are three different hair types that may be involved. They include Lanugo (long and silky), Vellus (replace Lanugo after birth except on the scalp and eyebrows), and terminal (course, thick, and pigmented). Generalized can include all three types while acquired usually involves vellus that turn into terminal. Along with being generalized or localized, Hypertrichosis is also separated into congenital or acquired classifications. Congenital means that this disorder was present at birth and may have been caused by mutations in the genes. While acquired means that it became present over time. The cause for congenital is typically genetics while the cause for acquired is influence by medical conditions such as metabolic disorders, cancer or even oral and topical drug treatments. Congenital Hypertrichosis Lanuginosa is thought to be caused by mutations on the eighth chromosome or spontaneous gene mutations. The main sign of Hypertrichosis is excess hair growth, especially in places that hair does not typically grow in. Symptoms of Hypertrichosis may be present because of underlying conditions or chemical imbalances and the side effects of some medications. When a patient is being diagnosed with Hypertrichosis, a Doctor will determine if this was congenital or acquired. Congenital has no cure but acquired are typically triggered by factors that can be reversed or lessened so the Doctor could try to find these triggers. Hypertrichosis can cause cosmet...
Albinism is a very serious disease that could end up in death. Albinism is a recessive inherited defect in melanin, which is metabolism in which pigment is absent from skin, hair, and eyes. Albinism in hair, skin, and eyes is called oculocutaneous albinism. Humans that have oculocotaneous albinism are not able to produce melanin. These people have white, yellow, or yellow brown hair, very light ( usually blue ) eyes, and very pale skin. Their eyes may appear pink because they have very little pigment.
...apter 362. Glycogen Storage Diseases and Other Inherited Disorders of Carbohydrate Metabolism. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo (Eds), Harrison's Principles of Internal Medicine, 18e. Retrieved January 21, 2012 from http://www.accessmedicine.com/content.aspx?aID=9144477.