Rett Syndrome

Atrial septal defect is a malformation of the heart, upper chambers (atria) where the wall between the right and left atrium does not close completely. In general, the absence of a hole in the wall (septum) between the two upper heart chambers (the atria). Arial septal defects occur in 4 percent to 10 percent of all children born with congenital heart defects. As a group, atrial septal defects in a child are detected per 1500 live births. Smaller atrial septal defects may close during infancy or early childhood. The health effects of holes that remain open often do not show until the last few years – usually 40 years. Many people do not realize they have a septal far. Sometimes a doctor detects an atrial septal defect during a newborn exam or during a routine examination later in life. Large and long atrial septal defects can damage the heart and lungs. One who can septal undetected for decades have a shortened life of heart failure or high blood pressure in the lungs. In children with ASD very low, the ASD closes on its own about 90% of the time. However, most of the other PDDs are closed. People with certain types of heart defects, including some rarer forms of ASD are at greater risk for developing bacterial endocarditis, an infection of the inner surface of the heart.

The term “septal” refers generally to holes in the atria, resulting from a lack of atrial septal tissue, rather than in connection with a disease called patent foramen ovale (PFO). Symptoms usually manifest at the age of 30. Infants with atrial septal defect may have more appetite and do not develop as they should. Infants may be signs of heart failure or heart rhythm disturbances. Congenital heart defects seem to occur in the family and sometimes with other genetic problems like Down syndrome. A genetic counselor can predict the approximate probability that children will have a future. An atrial septal defect allows oxygen-rich (red) blood from the left atrium through the hole in the wall, then pass with oxygen-poor (blue) blood in the right atrium. The complete closure is in most individuals. In 25-30% of the normal heart, but a probe from the right atrium to left atrium through the foramen ovale be passed and ostium secundum.
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Fertility Physicians of genetic testing, also known as preimplantation genetic diagnosis (PGD) is known before in vitro fertilization (IVF) embryos to choose freely from chromosomal abnormalities and certain genetic disorders. The selection is necessary because certain genetic diseases or failure of embryo implantation may cause pregnancy. The child may also from physical, mental or psychological problems.

These tests are not automatic, however. It is generally recommended if a woman’s medical history or age, the embryos to be affected by a genetic disease. The CIO is possible that the use of embryos from egg cells and sperm in the laboratory-US.

For couples, the risk of PGD technology reduces the possibility of a pregnancy by testing embryos before they are returned to the woman. The indications for the procedure: genetic diseases, miscarriages, more advanced age of the woman, unexplained infertility and other cycles of IVF failure.

For doctors the Fertility Center in Kansas City Reproductive Resources, the PID is an important tool to increase the chances of success with IVF. The ability to test embryos allows them to select only the normal IVF procedure, which reduces the possibility of miscarriage or birth.

The CIO must be from other forms of testing, genetic or otherwise, are distinguished from the pregnancy. The tests are now a number of diseases, including cystic fibrosis available, Down syndrome, thalassemia, Tay-Sachs and Canavan disease. These tests are carried out in adults, embryos, and are selected on the person, family and personal history.
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Leukemia is a disease that is an unmitigated disaster. It requires a timely response to their discovery, to maximize the chances of recovery with a specific treatment and therapy. Leukemia is basically a type of cancer of the bone marrow and blood, caused by improper cell activity. The disease can be of different forms depending on the types of blood cells responsible for their development. In addition, if the leukemia develops quickly, it is as acute leukemia, whereas if the disease develops slowly, it is called chronic leukemia.

The immediate causes of leukemia are still unknown. At the moment of medical science is unable to establish the specific causes of leukemia. However, a strong correlation between genetic factors and the development of the disease was revealed. Leukemia occurs on the background of the genetic disorder that is incomplete, the excessive production of, causing partial maturation of blood cells. In addition, the leukemia of a hereditary character, which enables the transmission of genetic predisposition to the disease has from one generation to another. Although many factors are known to contribute to the development of leukemia by itself, can not be regarded as causes of leukemia.

Despite the fact that the statistics show a higher incidence of the disease among people exposed to certain environmental risk of leukemia does not show through one of them, in particular caused. Among the environmental factors that are regarded as causes of leukemia, here are some of the most plausible:
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