Thursday, December 18, 2008
Miracle Face Transplant
I feel that a facial transplant performed here in the United States is almost like something out of a sci-fi book or something. Only four have been done so that tells you how difficult it is to perform. I wonder how this will change the medical world. Will other surgeons learn this procedure to extend their practice? Will more people be willing to do a face transplant? These are questions that will should be answered in the near future. I think it is a giant leap for the medical world. This could be something that could change lives, and give second chances.
Scant- Barely amounted to as much as indicated.
Recipient- A person or thing that recieves.
Transplantation- From one person or animal to another.
http://abcnews.go.com/Health/Story?id=6482372&page=1
Tuesday, November 25, 2008
Stressed to Death: Mental tension ages cells
A study puts evidence behind the old theory that stressful experiences can give a person gray hair. Scientific data now indicate that prolonged psychological stress might cause a person's cells to age, and possibly die, faster than normal. Past studies have shown that a protein called telomeres is a cells timekeeper. This could be the clue we need to find out.
It also protects the ends of chromosomes. Every time a cell divides enzymes take off a tiny portion of telomeres. When they are broken down to nubs, the cells stop dividing and die. Scientists have long known that stress can harm a person's health by, for instance, lowering immunity or raising blood pressure. A team of scientists recruited 58 healthy women between the ages of 20 and 50. All the women were mothers of at least one child, 39 members of the group were primary caregivers for a child who was chronically ill with a disease such as cerebral palsy. They all answered a survey on how much day-to-day stress she recieved in her life. Mothers with chronically ill children reported to have more stress than regular mothers. The team measured telomere length in immune cells called mononucleocytes collected from blood samples of each volunteer. From the telomere lengths, the researchers estimate that cells from the highly stressed women resembled cells of low-stressed volunteers who were 10 years older. Further tests showed that women who reported higher stress also had more free radical damage to their cells than women under less psychological strain did. The results "make sense," says Fred Goldman, a pediatric oncologist who studies telomere biology at the University of Iowa in Iowa City. "We know that people who are stressed out look haggard. … If we have less stress in our lives, we might live longer."
telomeres- A compound structure at the end of a chromosome.
cerebral palsy- A condition marked by impaired muscle coordination.
haggard- Looking exhausted, and unwell.
http://www.phschool.com/science/science_news/articles/stressed_to_death.html
Wednesday, October 15, 2008
The Dead Zone
Hypoxia basically means death to all the clams, sea stars, polychaete worms, and nudibranchs. Water that is less than 2 milligrams of oxygen per liter it is considered hypoxic and it is not able to support life. Species that are not fast enough usually die. Ocean organisms that are able to swim fast enough leave the area. But if the low-oxygen zone lasts to long the creatures have no choice. It is said that if this keeps going you can lose an entire species. These species might be endemic that live in just that specific area. Crews stick a water catcher that closes as soon as it hits the floor into the water. They test it for salinity, turbidity or cloudiness, temperature, and dissolved oxygen which reveals whether or not they entered the dead zone. The dead zone last up to at least six months. But people wonder if thats the extent of the damage. They occur around the world not only in the Gulf of Mexico. The United Nations have found 146 zones like this. These range from less than 1 square mile to 45,000 square miles.
They can be reversed but the things you have to do are sometimes drastic. But it is our best interest to try to prevent dead zones because they may cause species that are important to our survival, and the survival of future generations.
endemic-Of or relating to a disease or anything resembiling a disease present in a particular area.
hypoxic-Deficiency in the amount of oxygen reaching body tissues.
Bonfire
Friday, September 26, 2008
I think that losing an arm would be difficult to cope with. And I also feel that the new technology that has developed, where it is possible to get a bionic arm, is incredible. For her to be the first one to undergo this surgery is legendary.