A Study On Duchenne Muscular Dystrophy

1. The meaning of Duchenne muscular dystrophy is a severe form of muscular dystrophy caused by a genetic defect that can be characterized by a disturbed growth of cardiac and skeletal muscles. It usually affects boys. In 1861, a French neurologist, Guillaume B. Duchenne, was the first person to give a detailed description of this syndrome.

Muscular dystrophy is a degenerating disease, in which the skeletal muscles degenerate, lose their strength, and cause increasing disability and deformity. Muscles attached to the bones through tendons are responsible for movement in the human body, however, in muscular dystrophy the muscles become progressively weak. As the muscle fibers

Duchenne muscular dystrophy was first discovered by Guillaume Benjamin Amand Duchenne in the 1860’s, but due to lack of medical knowledge little was known until the 1980’s. It was in 1986 that researchers that were supported by the MDA, muscular dystrophy association, identified the particular X-chromosome that leads to DMD, Duchenne muscular dystrophy. Dystrophin is the protein that is associated with the gene and was named in 1987.The DMD gene is the second largest gene to date, and it produces dystrophin.(Genome, 2013) Lack of the protein Dystrophin in the muscle cells causes them to weaken and become fragile. (MDA, 2015). DMD is an inherited disorder, but there are rare cases where it can spontaneously appear in a child with no previous family history due to a random mutation in moms X-chromosome. DMD is a gender specific disease that only appears in males.

Duchenne Muscular Dystrophy is a disease which causes skeletal muscle to waste away, this wasting of muscle is caused by a mutation of the dystrophin gene (Meregalli et al., 2013, p. 4251).

Duchenne muscular Dystrophy (DMD) is the most common out of nine types of muscular dystrophy. This genetic disorder causes progressive muscular weakness, and deterioration due to the lack of a protein called Dystrophin. This protein keeps the muscles in tack, so when it's missing, the muscles slowly break down. (MDA, 2015)

According to Green (2014) the (DMD) gene for dystrophin, which is a protein that is present in muscles, is the second largest gene. A deficiency of dystrophin results in the damage of muscle fibres, resulting in a loss of muscle functioning. This disorder affects mainly the legs and pelvic region of the body. However it could also affect the heart, the respiratory system, as well as rarely the brain. Duchenne

According to the MediLexicon Medical Dictionary, muscular dystrophy is defined as a general term for a number of hereditary, progressive degenerative disorders affecting skeletal muscles, and often other organ systems (Staff). Basically what that means is that muscular dystrophy is a genetic disorder that is passed down that affects the skeletal muscles and other organs by slowly breaking them down. Since it is genetic, it is not contagious and you cannot catch it from someone who has it. MD weakens muscles over time, so children, teens, and adults who have the disease can gradually lose the ability to do the things most people take for granted, like walking or sitting up. Someone with MD might start having muscle problems as a baby or

Duchenne Muscular Dystrophy (also referred to as DMD) is a type of muscular dystrophy that weakens the muscles that we need to support our body, body weight, to stand, and to move around. It also can cause you to have scoliosis. Some of the main causes for DMD are genetic disorders, mutations, and DMD has to be passed down throughout everyone in that family for generations. The symptoms you can have if you have DMD are weak muscles, lack of strength, and difficulty walking. DMD is a negative mutation because it affects your muscles horribly bad that you can get a disability of walking and even moving. You need to tell your doctor immediately if you experience any symptoms. If you don't tell your doctor, you may find yourself in a very difficult situation where you can't get up or can't get something you need. When you do talk to your doctor, you will have an advantage of getting the help you need.

Duchenne muscular dystrophy (DMD) is a genetic disease that weakens one’s muscles. DMD is inherited through an X linked pattern due to the gene carrying the DMD mutation is on the X chromosome. The male population are affected by DMD almost exclusive. There is a one in two chance that a male offspring will have DMD if their mother is a carrier of the mutated gene. Every boy inherits an X chromosome from their mother and a Y from their father. If a boy inherits the mutated gene, then they will definitely have the disease because they don’t have a second gene to make up for the faulty one. Female with DMD are very rare in comparison to their counterpart. Girls inherits two X chromosomes, one from each parent. When a girl inherits

Muscular dystrophy (MD) is a genetic disorder caused by incorrect or missing genetic information that leads to the gradual weakening of the muscle cells. Various causes lead to weak and deteriorating muscles depending on the type of muscular dystrophy the patient was affected by. However, there are many causes for muscular dystrophy due to the fact that there are thirty forms of muscular dystrophy, which are categorized under several categories. All are ultimately caused by autosomal recessive, autosomal dominant, sex-linked, and random mutations in very rare cases.

One major problem associated with Duchenne Muscular Dystrophy (DMD) is the prevalence of fibrosis that occurs in the skeletal muscles, heart, and lungs of these patients. In the heart and lungs, fibrosis inhibits the body’s ability to perform cardiopulmonary or respiratory function, respectively. These conditions typically result in death if no emergency medical attention is given. Fibrosis can also present as contractures in the skeletal muscle fibers, which will usually result in the loss of skeletal muscular function and the need for surgery.

Muscular dystrophy develops weaker and less muscular mass in a category of diseases. Our healthy muscles need more formulation of proteins. Therefore, this only transpires when genes are imperfect. There are nine major types of muscular dystrophy, which include duchenne, becker, congenital, limb-girdle, facioscapulohumeral, emery-dreifuss, distal, myotonic, and oculopharyngeal. Distinguish decay and reconstruction of the muscle fibers, making the skeletal muscle and muscle proteins weaker. Additionally, killing muscle tissues and cells. Due to all the different types of categories of muscular dystrophy most symptoms start at different ages. The condition does not discriminate it affects males, females, and all races. It does occur more with families who have a history with muscular dystrophy.

With the advancement of molecular biology techniques illuminate the genetic basis underlying all muscular dystrophies: defects in the genetic code for dystrophin, a 427-kd skeletal

DMD is a disease where the muscles have no dystrophin, one of the proteins responsible for strengthening muscle fibers. As a result, each sarcomere is deformed, the entire muscle is weakened: it can't support the body, it can't move properly, and it is prone to damage.

Muscle tissues will weaken progressively and can eventually this disease usually leaves victims wheelchair bound at around 16 years old. It affects the lower limbs of the body first. Then it will begin to affect more important muscles such as the heart. (1) It deteriorates muscles at a much quicker rate than other muscular dystrophies like Becker’s, which are also caused by the DMD gene. (3). Having Duchenne Muscular Dystrophy will result in death. Symptoms will usually appear before the age of 6, and people who develop it will usually die around the age of 20. (1)