Julia Pastrana was the woman who became famous with the nickname "bearded lady" in mid year 1800s. Now, start LiveScience preaching, Sunday (24/5) called more than 150 years scientists finally discovered the genetic mutation provides to ensure that the condition rare experience of Julia.
Diseases scientific name known as hypertrichosis terminalis (CGHT) is a dense growth of hair all over the body causes the appearance of strange faces an enlarged teeth and gums.
In some cases, people with gum disease have a normal CGHT tooth. Previously, the disease is difficult to study because of the shortage of people who suffer from diseases like this. After analyzing a number of genes in three families of Chinese origin who has suffered more patience CGHT CGHT and gingival hyperplasia, researchers have discovered the genetic defect on chromosome 17.
In three Chinese families, the members of his family had to remove chromosomal DNA. That is, they lose a significant part of their essential genes. On the other hand, people who have experience extending teeth gums have an extra piece of DNA called DNA replication, the type of mutation that doubled their DNA structure. This genetic variation between four and eight genes affect koromosom 17.
"Although it was long believed that most people who suffer from a genetic defect CGH, the specific genetic mutation CGHT stressed with or without gingival hyperplasia has not been found so far," said Zhang Xue, author of the study Chinese Academy of Medical Sciences and Peking Union Medical College in Beijing.
A series of studies in the future will try to investigate the mechanism of why this mutation can cause the patient's physical appearance can be found, said Zhang. The research findings were presented May 21 in the American Journal of Human Genetics.
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