microblogology
Friday, November 13, 2015
Turn back time
In the effort to cure alzhiemer's disease a group of scientist at Salk institute have found a drug that will slow aging. The current treatments for alzhiemer's disease has focused on breakup the amyloids that build up in the cell. Their question was what if the amyloids were prevented to begin with. Alzhiemer's is connected to aging in some way. Older cells and DNA are more prone to mutations and mutations cause the misfolded proteins that then clump together.
Well the answer to this question came in the form of the drug J127. While feeding transgenic mice J127 to see if it would slow alzhiemer's progression they found that the mice showed better memory and were "younger" than the control mice. Using an undefined set of physiological factors these transgenic mice treated with J127 were at a younger state than the control mice. They showed improved memory and less alzhiemer's symptoms. These mice even looked younger than the control mice.
This is would be a great way to help alzhiemer's patients. By not allowing amyoids to for there won't be damage that cannot be reversed. However, it would be interesting to see if this drug could extend life. But even as just a treatment for old age and not specifically alzhiemer's this drug would be helpful. If it works the same way with humans as it does with mice it would be able to give people to ability to live independently and have a better quality of life longer. As it is now there really is a certain point where the older people cannot function in society. Their memories are no longer as good and the body starts to break down. I wonder if this drug would be able to help with the gradual break down of the body by slowing aging.
Friday, November 6, 2015
blood cells and stem cells
Stem cells are important to development of well everything. They are part of the immune system and when there is damage the stem cells will respond to fix that damage. they can be used to regrow a liver or fight off infection. These cells are being studied to find a way to grow new organs for patients that need them. In the time that the stem cells have been studied the questions of how blood came up. After studying 3000 single cell blood cultures it was found that the development of blood is two stages.The process is different between adults and children but the article is very unspecific about what is different between these stages. So it turns out that the mature blood cell are a direct daughter cell of the stem cell. This means that instead of like other cell types where stem cells mature into specific progenitor cells and then finally mature into functional cells. Skipping the progenitor cell makes the system much quicker.
Now that the system of blood development is more fully understood this could mean big changes in the way blood diseases are treated. We could theoretically supply patients with their own blood instead of with donor blood which would reduce rejection rates. The treatment options are endless and would really increase the patients lives.
Here is the article: http://www.sciencedaily.com/releases/2015/11/151105143819.htm
Friday, October 30, 2015
DNA repair
Your DNA is in constant flux. It folds, copies, transcribes genes, refolds, and is mutated constantly. Part of the ability to be dynamic allows for changes, sometimes these are good, sometimes these are bad. Changes are caused by many damaging effect like UV or chemical exposure. For the most part DNA fixes itself. It has many different repair mechanisms that interact with the bases to determine if they are right or wrong. Researchers have found a repair mechanism that doesn't interact with the base pairs.
We know that a family of repair proteins called glycosylases that flip incorrect bases outside the helix and replace them with the new correct base. These alkD repair mechanisms interact with only the backbone and locate positively charged bases caused by alklyation. They remove these bases and fix them. Since it locates problems based on charge it can do a much bigger area and more types of damage than the other types of glycosylases.
This finding just constantly shows that we do not yet know all there is to know about our DNA repair systems. Finding these new mechanisms could lead to future work in DNA repair therapies. We could learn how to understand these mechanisms and learn how to manipulate them for treatments.
Here's the link: http://www.sciencedaily.com/releases/2015/10/151029190840.htm
Friday, October 23, 2015
Premature death test
Well what if you went to the doctor and had a routine blood test and the results came back positive for premature death? Yeah that would be pretty sucky. But science is getting close to this.
Researchers have found a biomarker called GlycA that is caused by low level inflammation. Long exposure to inflammation increases a risk of death. This inflammation is caused by low levels of microbial infections.
Even though they have found this marker and have determined that it has some effect in premature death they do not know very much about it. They do not have a treatment for it or any preventative actions to take, They also still do not know how long the patient will have to live or rather not to live.
Here is the article:http://www.sciencedaily.com/releases/2015/10/151022124339.htm
Friday, October 16, 2015
Knee pain? Back pain? Tendon problem or high cholesterol
Your doctor wants to blame all your joint pain on body weight or over excercising. They say "here take this anti-inflammatory and try not to move too much. It'll get better eventually." But what if your tendon pain wasn't caused by just inflammation from overworking your tendons. We aren't treating the root cause of the pain then only the symptoms.
Well some researchers have seen that high cholesterol may be the cause of some tendon pain. Specifically that abnormal tendon shape and thickness coorelates to a high lipid content in the blood. We do not know if this is an effect or a causation. But we do know that high levels of cholesterol changes the immune system which then seems likely to cause low levels of inflammation. But in any case bad lipid levels in the blood shows bad tendons.
The researchers do point out that people with high cholesterol may work out less and therefore have a higher body weight that then causes tendon abnormality. So all in all we did some work, read somethings, and may or may not have discovered anything of any use. The article doesn't answer some main questions like: will treating the cholesterol levels change the joint pain.
Here's the article: http://www.sciencedaily.com/releases/2015/10/151015211823.htm
Friday, October 9, 2015
Utilizing mycobacterium for the good of all people!
Bladder cancer is a rough thing to battle. My family has dealt with the ups and downs of cancer much like most other people. Six years ago my grandfather was diagnosed with bladder cancer after being in and out of the hospital with kidney failure and other health problems. After four years of chemo and surgery he passed away in his sleep. Almost every family has their own story of lost loved ones to the battle against cancer. But what if something as unconventional like Mycobacterium was the answer to prolonging life?
Well there is a current study going on using mice models and Micobacterium brumae. They have found that when this bacteria is introduced into the bladder it can reduce tumor size and stimulates an immune response in the area. Nothing is better at destroying cancer cells like the immune system sometimes it just needs a little push by infection to get it started. The good thing about this particular strand is that it is non pathogenic so there is no fear of infection. This is very important as infection is a cancer patients worst enemy. In mice it has been seen that the cancer tumors reduce and the life span is prolonged. Making this a widespread treatment would give families the extra time they pray for every night.
Currently, a similar treatment is used for superficial bladder cancer using Mycobacterium bovis. It is very good at keeping new tumors from forming but it is also pathogenic and if not watched carefully it can lead to infection. Like I said infection is a cancer patients worst enemy. When your immune system is already down the last thing you want to do is take antibiotics and try to fight off infections. The new treatment may only reduce tumor size but at least it doesn't present danger of infection.
There may be more hope in using bacteria to treat cancer in ways we never thought of before. Its research like this that I would love to be a part of. The answer is out there, we just need to find it.
Here's a link to the story: http://www.news-medical.net/news/20151006/Mycobacterium-could-be-more-effective-in-treating-superficial-bladder-cancer-study-finds.aspx
Friday, October 2, 2015
Cute fluffy little koalas (also full of chlamydia)
Everyone loves koalas. I mean how can you not, they are little fluff balls that sleep all day and eat all the time. If you don't love koalas here is a picture to change your mind.
He looks so happy! But chances are this little guy has chlamydia. Yup. Chlamydia. You know which STD I'm talking about. Well it turns out that ecologist expect that nearly half of the 80,000 wild koala population have chlamydia. . SO naturally they are being treated with high doses of antibiotics because koalas only live in Australia and there's only 80,000. We need as many of them to live and reproduce as possible. Now there are less koalas dying of chlamydia but more dying of lack of nutrients. Especially innocent little baby joeys. Researchers have determined that this is being caused by the antibiotic wiping out the tannin-protein-complex-degrading entreobacteria. Why is this bacteria important? Because eucalyptus is really toxic and doesn't have many nutrients and this bacteria slowly degrades that toxins to allow the koala to get as many nutrients as possible from the leaf. The joeys are suffering because the pap, a substance that is rich in these bacteria that is transferred from mother to joey, isn't full of the bacteria needed. This means that the joey isn't properly colonized.
So to fix this researchers have found a gene called the koala interferon gamma. This gene blocks infections including chlamydia. They think that if they can introduces these genes to each koala they can stop the antibiotic treatment. I am not sure how they would do this but it would allow our cute little friends to be infection free and nutrient rich!
Here's the link:http://www.scientificamerican.com/article/treating-koala-stds-may-also-quash-their-essential-gut-microbes/
Subscribe to:
Comments (Atom)