Down Syndrome or Trisomy 21

"With regard to life expectancy, the medical period in developed countries is about 50 to 60 years." (1) Second, the diagnosis of this genetic disease is related to physical appearance and mental ability. Some of the common physiological features of Down's syndrome are a single fold across the center of low muscle tonus, small body and chin, upwardly inclined eyes, flat nose bridge and palm. However, each person with Down Syndrome is a unique individual who may or may not possess these features.

Down syndrome or trisomy 21 is a general chromosomal abnormality that causes many defects in physical and mental development. Previously known as Down's syndrome or Mongolian, now it is identified as Down Syndrome in North America. Children with Down's syndrome have a higher risk of becoming a mother's age. For example, a 30-year-old woman has a risk of inflammatory reactions, which is a protective mechanism and an important basic concept in pathophysiology. Inflammation is a normal defense mechanism in the body and is designed to identify and remove harmful substances. You may have observed inflammatory processes caused by cutting, allergic reactions, insect bites, infections or small burns

The most common type of Down's syndrome is trisomy 21. This type occurs in about 90 to 95% of patients with Down's syndrome. This type of syndrome occurs before conception and occurs when chromosome 21 does not divide. This abnormal gamete then adds normal gametes during conception and forms fertilized eggs with three # 21 chromosomes. Another type of Down's syndrome is mosaic down syndrome and affects 2% to 5% of cases of Down's syndrome. Mosaic Down Syndrome occurs when one of 21 chromosomes is lost or repeated during fertilization. The last Down's syndrome is called translocation Down syndrome. It is also the least common form of this syndrome. As with trisomy 21 syndrome, translocation Down syndrome has three # 21 chromosomes. However, one of the 21 chromosomes is not isolated and adheres to other chromosomes. Two of the # 21 chromosomes may bind to other chromosomes.