"Scientists Find Heart Stem Cells"
ScienceNow. Retrieved at: http://sciencenow.sciencemag.org/cgi/content/full/2009/702/1
Scientists are constantly trying to find new ways to better the stem cell research, and now they have found a heart stem cell that could change the future. They have found a cardiac stem cell that can be used for all the major heart cell types in the heart. Since heart tissue cannot regenerate itself, this will help patients with damaged heart cells to be able to heal their own heart. The protein that was found had been found in fetal mouse hearts, but now they have been able to find it in human fetal hearts. Once they pinpointed the right cells they took several other steps to make sure that these findings actually worked. They were able to prove that these cells were the “master stem cells” by showing that they could grow into any of the hearts major cell types, which are heart muscle, smooth muscle and the muscle cells that line the blood vessels. The scientists said that these newfound cells could not be used for therapy seeing as they could develop into undesired cells. Researchers believe that they could be able to grow heart parts for patients such as heart strips or vavles.
Wednesday, October 14, 2009
Wednesday, September 30, 2009
State of research project (Sept. 30)
the state of my project right now is still in the process of being started. The article that I have chosen is still something that I am not sure that I really want to research about. I am in Athletic Training so I wanted to choose something that was along the lines of what I should be studying anyways. I have thought about many of the areas that I would want to write about, but since this semester I am sticking to lower limbs, i thought that I should go for something lower. I then thought about the knee and ACL's, but I think I will just stick an ankle injury.
"Caffeine Linked to Hallucinations" -14
"Caffeine Linked to Hallucinations"
ScienceNOW. Retrieved at: http://sciencenow.sciencemag.org/cgi/content/full/2009/113/1
People who drink a lot of caffeinated drinks and coffee daily, are reported to more likely have out of body experiences and hear voices, than those you do not drink as much. The link between the two makes sense, since when the body becomes stressed it produces more of the hormone cortisol, which if elevated it can cause people to hear and see things. The hormone cortisol can also be regulated by caffeine, making it possible for caffeine users to see and hear these unexplained things. Several scientists tried out an online survey to see what coffee drinkers where experiencing. The survey had the answer from mostly women that they have had outer body sensations. These women were used to having two to three cups of coffee a day, which then caused them to have the outer body experience and the hallucinations. It is still possible that coffee is not the reason for these people having hallucinations, since they do not know their use with alcohol or any illegal drugs. There was a search done years ago also connecting caffeine to hallucinations, then there is the question about those who have developed a tolerance, could they also develop a tolerance for the hallucinations.
ScienceNOW. Retrieved at: http://sciencenow.sciencemag.org/cgi/content/full/2009/113/1
People who drink a lot of caffeinated drinks and coffee daily, are reported to more likely have out of body experiences and hear voices, than those you do not drink as much. The link between the two makes sense, since when the body becomes stressed it produces more of the hormone cortisol, which if elevated it can cause people to hear and see things. The hormone cortisol can also be regulated by caffeine, making it possible for caffeine users to see and hear these unexplained things. Several scientists tried out an online survey to see what coffee drinkers where experiencing. The survey had the answer from mostly women that they have had outer body sensations. These women were used to having two to three cups of coffee a day, which then caused them to have the outer body experience and the hallucinations. It is still possible that coffee is not the reason for these people having hallucinations, since they do not know their use with alcohol or any illegal drugs. There was a search done years ago also connecting caffeine to hallucinations, then there is the question about those who have developed a tolerance, could they also develop a tolerance for the hallucinations.
"Obesity In Mid-life Reduces The Chance Of Healthy Survival In Women" -13
"Obesity In Mid-life Reduces The Chance Of Healthy Survival In Women"
Science Daily. Retrieved at: http://www.sciencedaily.com/releases/2009/09/090929194205.htm
A recent study shows that women who live to be 70 and that are either over-weight or were over-weight during their mid-life, can have some serious issues later in life. They were seen to have more chronic diseases and impaired cognitive function, physical function, and mental health. Women, who were lean throughout most of their lives starting from young adults, are shown to be much healthier later on in life. It is the first study showing what adiposity does to the woman’s body. In today’s day, people are getting older, but in the United States, people are also getting much bigger. In the U.S., one third of the population is obese, and almost two thirds of the population is over-weight. In a study that was done, 9.9% of the women were healthy and at a decent weight. Out of the rest of the women, about 3% had chronic diseases, but no other health limitations, about 60% had cognitive, physical or mental health limitations but no chronic diseases and the last 37% had both the chronic diseases and the limitations in cognitive, physical, and their mental health.
Science Daily. Retrieved at: http://www.sciencedaily.com/releases/2009/09/090929194205.htm
A recent study shows that women who live to be 70 and that are either over-weight or were over-weight during their mid-life, can have some serious issues later in life. They were seen to have more chronic diseases and impaired cognitive function, physical function, and mental health. Women, who were lean throughout most of their lives starting from young adults, are shown to be much healthier later on in life. It is the first study showing what adiposity does to the woman’s body. In today’s day, people are getting older, but in the United States, people are also getting much bigger. In the U.S., one third of the population is obese, and almost two thirds of the population is over-weight. In a study that was done, 9.9% of the women were healthy and at a decent weight. Out of the rest of the women, about 3% had chronic diseases, but no other health limitations, about 60% had cognitive, physical or mental health limitations but no chronic diseases and the last 37% had both the chronic diseases and the limitations in cognitive, physical, and their mental health.
"Air Pollutants From Abroad A Growing Concern, Says New Report" -12
"Air Pollutants From Abroad A Growing Concern, Says New Report"
Science Daily. Retrieved at: http://www.sciencedaily.com/releases/2009/09/090929132509.htm
Harmful air pollutants not only stay around locally and harm the areas that it is in; it crosses oceans and flows from one continent to another. Emissions from any country can be completely harmful for a country different from the country that it is starts, affecting humans and ecosystems around the world. There are four types of pollutants that travel through the air over the northern hemisphere, and satellites are actually able to catch some of the pollutants through the hemisphere. It is still difficult to determine which pollutant causes what in the air. It is known that where it lands it can cause respiratory problems for people. Some of the pollutants found in the United States can be traced back to emissions and pollutants from inside Asia. They were able to track how long it took to cross the pacific from Asia to the observatory in Oregon, which took eight days.
Science Daily. Retrieved at: http://www.sciencedaily.com/releases/2009/09/090929132509.htm
Harmful air pollutants not only stay around locally and harm the areas that it is in; it crosses oceans and flows from one continent to another. Emissions from any country can be completely harmful for a country different from the country that it is starts, affecting humans and ecosystems around the world. There are four types of pollutants that travel through the air over the northern hemisphere, and satellites are actually able to catch some of the pollutants through the hemisphere. It is still difficult to determine which pollutant causes what in the air. It is known that where it lands it can cause respiratory problems for people. Some of the pollutants found in the United States can be traced back to emissions and pollutants from inside Asia. They were able to track how long it took to cross the pacific from Asia to the observatory in Oregon, which took eight days.
"Closer Look at Einstein's Brain" -11
"Closer Look at Einstein's Brain"
ScienceNOW. Retrieved at: http://sciencenow.sciencemag.org/cgi/content/full/2009/417/1
Albert Einstein, a genius, died in 1955 and had his brain removed by a pathologist, who preserved, photographed and measured Einstein’s brain. Throughout the years, a colleague of the pathologist cut up slices of the brain to mount them onto slides, and occasionally send them off to universities. What was left of the brain then traveled in a jar with the pathologist until he gave the last remaining piece of Einstein’s brain to the University Medical Center of Princeton. A neurobiologist studied the pictures of the brain, as that was all that was left of the whole brain intact. They found that Einstein’s parietal lobes were larger than normal, yet his brain size was smaller than the lower end of average for modern human beings. While studying his parietals, they noticed that he had more grooves and ridges, possibly explaining his abilities to conceptualize physic problems. While studying other photos of his brain and 25 others, they found a knob like structure in the motor cortex and realized that this is the structure that controls left hand, but in others it has been associated with musical ability. Some are skeptical that Einstein was a parietal thinker, such as thinking in images and sensations, but they are only working off of photographs so it is difficult to tell.
ScienceNOW. Retrieved at: http://sciencenow.sciencemag.org/cgi/content/full/2009/417/1
Albert Einstein, a genius, died in 1955 and had his brain removed by a pathologist, who preserved, photographed and measured Einstein’s brain. Throughout the years, a colleague of the pathologist cut up slices of the brain to mount them onto slides, and occasionally send them off to universities. What was left of the brain then traveled in a jar with the pathologist until he gave the last remaining piece of Einstein’s brain to the University Medical Center of Princeton. A neurobiologist studied the pictures of the brain, as that was all that was left of the whole brain intact. They found that Einstein’s parietal lobes were larger than normal, yet his brain size was smaller than the lower end of average for modern human beings. While studying his parietals, they noticed that he had more grooves and ridges, possibly explaining his abilities to conceptualize physic problems. While studying other photos of his brain and 25 others, they found a knob like structure in the motor cortex and realized that this is the structure that controls left hand, but in others it has been associated with musical ability. Some are skeptical that Einstein was a parietal thinker, such as thinking in images and sensations, but they are only working off of photographs so it is difficult to tell.
"A Connection Between Sleep and Alzheimer's?" -10
"A Connection Between Sleep and Alzheimer's?"
http://sciencenow.sciencemag.org/cgi/content/full/2009/924/3
A new study has been found between the connection of sleep, or lack of sleep, and Alzheimer’s disease. For both humans and mice, there is a peptide that rises while the human, or mouse, is awake, and falls while they sleep. Scientists reported on the mice that were sleep-deprived had a build up of the peptide, a sort of plaque. This build of plaque from the peptide is the same type of build up found in the patients with Alzheimer’s. They believe that a patient who now has Alzheimer’s had a build up from the very beginning, before any symptoms began. To experiment this peptide and Alzheimer’s disease, the scientists took cerebrospinal fluid from mice, and for three weeks, they kept the mouse awake for 20 hours a day to see if their peptide level had risen. After the three weeks, the peptide level had risen to higher plaque levels compared to the other well-rested mice. They also found a hormone that promotes wakefulness, which reduced plaque formation. The findings could let people know that not getting enough sleep could lead to build up of the peptide plaque, making them more susceptible to Alzheimer’s disease. They also are trying to see if anything can be done with the hormone that reduces the plaque. There is yet a cure or any serious type of treatment for Alzheimer’s, but it is still a new piece of information that could be helpful.
http://sciencenow.sciencemag.org/cgi/content/full/2009/924/3
A new study has been found between the connection of sleep, or lack of sleep, and Alzheimer’s disease. For both humans and mice, there is a peptide that rises while the human, or mouse, is awake, and falls while they sleep. Scientists reported on the mice that were sleep-deprived had a build up of the peptide, a sort of plaque. This build of plaque from the peptide is the same type of build up found in the patients with Alzheimer’s. They believe that a patient who now has Alzheimer’s had a build up from the very beginning, before any symptoms began. To experiment this peptide and Alzheimer’s disease, the scientists took cerebrospinal fluid from mice, and for three weeks, they kept the mouse awake for 20 hours a day to see if their peptide level had risen. After the three weeks, the peptide level had risen to higher plaque levels compared to the other well-rested mice. They also found a hormone that promotes wakefulness, which reduced plaque formation. The findings could let people know that not getting enough sleep could lead to build up of the peptide plaque, making them more susceptible to Alzheimer’s disease. They also are trying to see if anything can be done with the hormone that reduces the plaque. There is yet a cure or any serious type of treatment for Alzheimer’s, but it is still a new piece of information that could be helpful.
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