Friday, October 29, 2010
Gatorade Unhealthy?
When you play a sport or get done exercising and you drink Gatorade, you drink it to hydrate you and because it is a good sport drink, but do you really know how much sugar Gatorade contains? Gatorade contains about the same amount of sugar that soft drinks contain. They have high-fructose corn syrup and have caused obesity among children throughout the United States. Scientists Ranjit says, "Drinking just one can of soda or other sugary beverage a day could lead to more than a 10-pound weight gain in a year." Sugared drinks, such as Gatorade, are only healthy to consume after extreme exercising. Other than that the better choice to drink is water.
Article published on September 28, 2010
Posted by Kelli at 6:14 PM 0 comments 10/12/2010
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Labels: http://www.sciencedaily.com/releases/2010/09/100927141150.htm
Thursday, October 21, 2010
Scientists uncover new species of human ancestor
Source: University of New South Wales
Date: April 9, 2010
Link:http://www.biologynews.net/archives/2010/04/09/scientists_uncover_new_species_of_human_ancestor.html
Summaries: In this article a team of 60 scientist have discovered a skeleton of an adult female and a child's skeleton. Dr. Andy Herries from the University of New South Wales was also apart of this discovery. These skeletons were found in South Africa. The skeletons are about 1.95 million to 1.78 million years old. Those two skeletons were from a new species. The name of the new species is called Australopithecus sediba. This species has similarities to the bipedal ape and an early homo. This article shows us that there are more species that were around that we don't know about that are extinct. It makes me wondered what other new species are out in the world.
Tuesday, October 19, 2010
Temperature Rhythms Keep Body Clocks in Sync
Article Name: Temperature Rhythms Keep Body Clocks in Sync
Source: Sciencedaily.com (Online Magazine)
Date of Publication: October 15, 2010
Website Address: http://www.sciencedaily.com/releases/2010/10/101014144314.htm
Summary:
The article “Temperature Rhythms Keep Clocks in Sync” explains how Researchers at UT Southwestern Medical Center have found that fluctuations in internal body temperature regulate the body’s circadian rhythm, sleep and other bodily functions. The suprachiasmatic nucleus is the body’s master clock. “The SCN responds to light entering the eye, and so is sensitive to cycles of day and night. While light may be the trigger, the UT Southwestern researchers determined that the SCN transforms that information into neural signals that set the body's temperature”. The study showed that the fluctuation in temperature set the cells timing, and ultimately tissues and organs, to be active or in active. "Small changes in body temperature can send a powerful signal to the clocks in our bodies”.
Comments:
I feel that this article is very interesting. It gives a good explanation to why the human body works the way it does. It also gave good reasoning behind the research that was presented in the Article.
Tuesday, October 19, 2010-Habib Heban
Vitamin B12 May Reduce Risk of Alzheimer's Disease
Article Name: Vitamin B12 May Reduce Risk of Alzheimer's Disease
Source: Sciencedaily.com (Online Magazine)
Date of Publication: October 18, 2010
Website Address: http://www.sciencedaily.com/releases/2010/10/101018162922.htm
Summary:
The article “Vitamin B12 May Reduce Risk of Alzheimer’s Disease “explains how new studies show that the Vitamin B12 may protect against the disease. The research supporting the study will be published in the October 19, 2010 issue of Neurology. This particular study took seven years. Researchers took blood samples from Finnish people between the ages of 65 and 79 who did not have dementia at the beginning of the study. “During that time, 17 people developed Alzheimer's disease. Blood samples were tested for levels for homocysteine, an amino acid associated with vitamin B12, and for levels of the active portion of the vitamin, called holotranscobalamin. Too much homocysteine in the blood has been linked to negative effects on the brain, such as stroke. However, higher levels of vitamin B12 can lower homocysteine”. More study’s still need to be completed before the vitamin B12 is used as a supplement to protect memory.
Comments:
I feel that this article may be very helpful to many people. Many elderly people suffer from dementia and Alzheimer’s disease and this new discover could be very helpful for them. I think that the more the study progresses the more helpful it will be.
Tuesday, October 19, 2010- Lamina Buster
Climate Change May Alter Natural Climate Cycles of Pacific
Source: Online magazine
Date of publication: ScienceDaily (Oct. 18, 2010)
Website AdressL http://www.sciencedaily.com/releases/2010/10/101017133641.htm
Summary
El Nino is a periodic warming in the eastern tropical Pacific that occurs along the coast of South America, however this phenominom seems to be migrating. El ninos warming is stronger now in the central pacific than the eastern pacific called el Nino Modoki. Scientists believe climate change is responsible for this shift. This latest paper in Nature Geoscience presents evidence that El Nino Modoki drives a climate pattern known as the North Pacific Gyre Oscillation (NPGO). As El Nino Modoki intensifies, so to does NPGO.
Comments
This article does an ok job at informing a person on the climate shift, however, it doesn't explain the consequences this new El Nino Modoki will have when compared to a normal El Nino. Afterall, the (North Pacific Gyre Oscillation) which is affected by El nino Modoki, has a direct impact over "fish stocks and ocean nutrient distributions in the Pacific, especially along the west coast of the United States." I think the fact that this article is relitavley new will ensure follow up articles will be provided. Altough wether the changes will be destructive or not is not the only thing that must be considered. Afterall, any change ill require some enviromental adjustment, which could prove both disasterous and unpredictable.
Monday, Oct 18 - Paul Donahue
Monday, October 18, 2010
Plant Biologists And Immunochemists Develop Hypoallergenic Alternative To Latex
December 1, 2008 — Plant biologists and immunochemists developed a way to produce rubber from a desert plant called guayule. The plant contains a natural rubber alternative without the proteins that trigger allergic reactions to latex. To release the rubber from their aqueous solution in the bark, scientists grind up the plant. Because the rubber particles are lighter than water, spinning the solution in a centrifuge causes the rubber to separate and settle at the top.
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Health & Medicine
•Allergy
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Plants & Animals
•Endangered Plants
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Since the 1980s, latex gloves have been an important part of preventing the spread of infectious diseases like MRSA, HIV and AIDS. In fact, ten billion latex gloves are used every year in the United States. As we use more latex, more people are developing dangerous allergies to it. Scientists have developed a new, natural alternative that may solve the problem.
Faith, Lamar and David Ryberg love games -- but that's not all they have in common. They all have Spina Bifida. Like 68 percent of kids with this birth defect, all three have dangerous allergies to latex.
"You just get kind of nervous you could stop breathing at any moment," Lamar said.
Three million Americans and as many as 17 percent of healthcare workers in the United States have latex allergies. Reactions range from skin irritations and wheezing to a sudden drop in blood pressure, anaphylactic shock and even death. Scientists say a desert plant called guayule offers a new, natural rubber alternative without the proteins that trigger allergic reactions.
Katrina Cornish, Ph.D., a plant biologist and immunochemist at the Yulex Corporation in Maricopa, Ariz., says the key to processing guayule is to release the rubber contained in the plant. It starts with a sort of guayule milkshake.
"We take the whole shrub and grind it up to release the rubber particles, which are made in the bark into an aqueous medium," said Dr. Cornish.
Rubber particles in the mixture are slightly lighter than water. By spinning the solution in a centrifuge, the rubber separates, forming a liquid that rises to the top. Dr. Cornish says not only is this latex alternative, called Yulex, safer for those with allergies -- products made with it are more flexible and stronger than latex. In this test, the Yulex on the left stood up to nearly twice as much force as the purple latex on the right.
Uses for guayule latex are virtually endless.
"So far, we haven't found anything made out of rubber that we can't make with guayule," Dr. Cornish said. It's a new kind of rubber that might just fit like a glove for the millions with latex allergies, like Lamar.
"It would be very, very good!" Lamar exclaimed.
Yulex recently received FDA approval for a medical examination glove. Researchers say it's comparable in price to high-end synthetic latex. Because over 50 percent of rubber products now available are petroleum-based, Yulex could become even more attractive as oil prices increase.
WHAT IS GUAYULE? Guayule is a plant native to North America that grows well in arid areas of the southwestern United States and in Mexico. The plant produces resins that act as natural pesticides, making guayule resistant to many pests and diseases. The bark of the guayule contains rubber, but it does not contain the allergy-causing proteins present in the plants that are used to make latex. Guayule rubber has comparable strength to that of synthetic latex, but is softer and more elastic.
WHAT ARE ALLERGIES? Every year, when spring rolls around, millions of Americans start sneezing and coughing. Allergies are the culprit. An allergy is simply a negative reaction to a substance that enters the body that is not toxic in itself, yet for some reason causes a bad reaction in the body. Just about anything can be an allergen: dust mites, pollen, cats, dogs, wasps or bees, milk, eggs, peanuts, and even fruits are the most common.
A normal immune system is the body's defense against invading bacteria and viruses. It senses potential invaders and attacks them by producing antibodies. But sometimes a person's immune system mistakes a common allergen as harmful. So it produces antibodies to attack them, and this triggers other cells to release chemicals called histamines, causing allergic symptoms. The most common symptoms of an allergic reaction include sneezing, swelling, itchy eyes, sinus pain, a runny nose, rashes or hives, coughing, and in some cases, vomiting. In extreme cases, an allergen can cause difficulty in breathing. This is called an anaphylactic reaction, and a severe attack can be fatal if not treated quickly.
Biology News Blog-Gene Identified That Prevents Stem Cells from Turning Cancerous
Article Name-Gene Identified That Prevents Stem Cells from Turning Cancerous
Article Date- Oct 14, 2010
Link to Website-http://www.sciencedaily.com/releases/2010/10/101014191151.htm
Summary
Stem cells are the prodigious precursors of all the tissues in our body. They have the ability to develop almost anything in our body given the right circumstances and unfortunately this can be a good thing and a bad thing. One bad thing that can be developed from stem cells is cancer. Researchers from Rockefeller University found out that two things can increase your chances in developing cancer. The two are having too many stem cells and having stem cells that live too long. To help slow down this problem, researchers identified a mechanism, which is called Sept4, that regulates programmed cell death in precursor cells for blood, or hematopoietic stem cell. This provides evidence of the potentially carcinogenic downside to stem cell treatments and suggests that nature tries to balance stem cells' regenerative power against their potentially lethal potency.
What I Think.
I believe that this is a major improvement in science because cancer is a problem that has an effect on many people. Alot of deaths have come from cancer and this is huge that scientist have found a way to at least attempt to slow down the problem. Researchers have been trying to solve this problem for many years and never had a way to slow it down or tell u a reason why u developed the gene but now that they now more about the problem they can do more to help u get rid of the cancerous gene.
Citation-
Rockefeller University (2010, October 14). Gene identified that prevents stem cells from turning cancerous. ScienceDaily. Retrieved October 16, 2010, from http://www.sciencedaily.com¬ /releases/2010/10/101014191151.htm
Raymond Hines