Difference between revisions of "Team:UMaryland/Practices"

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<p style="font-size:18px;text-align:justify;">We met with a researcher who studies the causes of AMD, Dr. Noriko Esumi. She currently studies retinal pigment epithelium (RPE) and how it relates to AMD. After giving her an explanation of what iGEM is and why we were choosing to study lutein production, she told us that, while her experience with lutein itself was limited, she was well informed about retinal health and some of the causes of macular degeneration.
 
<p style="font-size:18px;text-align:justify;">We met with a researcher who studies the causes of AMD, Dr. Noriko Esumi. She currently studies retinal pigment epithelium (RPE) and how it relates to AMD. After giving her an explanation of what iGEM is and why we were choosing to study lutein production, she told us that, while her experience with lutein itself was limited, she was well informed about retinal health and some of the causes of macular degeneration.
  
From our conversation, we learned that age-related macular degeneration can be attributed to a few factors: smoking, immune responses based on bacterial infections, genetics, and, as its name suggests, aging.
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From our conversation, we learned that age-related macular degeneration can be attributed to a few factors: smoking, immune responses based on bacterial infections, genetics, and, as its name suggests, aging. She also supported the notion that lutein is an effective vitamin supplement to help maintain and improve ocular health.
Dr. Esumi works on studying the RPE and its specialization. She studies the genes unique to the RPE and the transcription factors associated to help answer the question of why are these unique genes only expressed in the RPE and nowhere else in the body?
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She also focuses mainly on the aging process of cells. Without aging AMD will not develop, she argued.
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However, she also shared that she agrees that lutein is an effective vitamin supplement to help maintain and improve ocular health.
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She shared with us a study where a group of scientists tested a variety of cells in hope of finding a common gene that could be attributed to aging. While this gene was not found, the did find a common sequence in the promoter region of these cells, NFκB. A certain transcription factor related to inflammation loves this sequence as a binding site.
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Drawing from this study, Dr. Esumi experiments with mice. She allows transgenic mice, and naturally-aging mice to age for two years and studies AMD development in them. She also uses these mice to study inflammation patterns and whether exposure to oxidative stress (smoking) increases risk of AMD.
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All in all, we learned a lot about the potential to eradicate AMD as an affliction, the importance of RPE, and that lutein is a useful supplement for maintaining healthy eyes.
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<img src="https://static.igem.org/mediawiki/2015/c/c6/Eyeplace1.png" style="height:45%; width:45%;float:left;margin:5px;">
 
<img src="https://static.igem.org/mediawiki/2015/c/c6/Eyeplace1.png" style="height:45%; width:45%;float:left;margin:5px;">
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<img src="https://static.igem.org/mediawiki/2015/6/64/Eyeplace2.png" style="height:45%; width:45%;float:center;margin:5px;">
 
<img src="https://static.igem.org/mediawiki/2015/6/64/Eyeplace2.png" style="height:45%; width:45%;float:center;margin:5px;">
 
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<h3 style="font-size:24px;text-align:justify;"> Columbia, Maryland </h3>
 
<h3 style="font-size:24px;text-align:justify;"> Columbia, Maryland </h3>
 
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<p style="font-size:18px;text-align:justify;">We also interviewed an ophthalmologist from a branch of the Wilmer Eye Institute.
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Our next interview was with Dr. Nosheen Ahmed. While Dr. Esumi had more experience with the tissue cells that cause AMD when dysfunctional, Dr. Ahmed had more experience with the disease itself, its symptoms, its common treatments, how it affects the lives of patients, etc.
 
Our next interview was with Dr. Nosheen Ahmed. While Dr. Esumi had more experience with the tissue cells that cause AMD when dysfunctional, Dr. Ahmed had more experience with the disease itself, its symptoms, its common treatments, how it affects the lives of patients, etc.
  
From the interview with Dr. Ahmed, we learned:
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From the interview with Dr. Ahmed, we learned that a good prevention method for those at risk for AMD is a change in lifestyle habits. For example, quitting smoking, minimizing computer use, and improving one's diet all could benefit eye health. Optometrists recommend a lot of leafy greens and dark vegetables, which contain a variety of carotenoids, including lutein.
 
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Dr. Ahmed stated that not many studies has been done with lutein but there is a consensus it has a positive effect on AMD.  
AMD often results from waste products building up in the eyes with age. This correlates with RPE malfunction.
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A trend noticed in AMD patients, is that they tend to be more affected or more susceptible to the condition the lesser pigmentation they have in the eyes, it correlates with UV exposure.
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Dr. Ahmed discussed a series of two studies known as AREDS (age related eye disease study) I and II. The second set of studies actually discussed lutein and zeaxanthin as feasible vitamin supplements to apply to AMD especially in the case of dry type.
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In accordance with the information provided by Dr. Esumi, Dr. Ahmed also explained the dry type has no significant treatment. She also added that it develops more slowly than wet type.
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Wet type AMD can be treated with cancer drugs to reduce tissue cell proliferation. Originally these drugs were specific to colon cancer but drugs have been more recently developed to specialize in treatment for the RPE.
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However, this aforementioned treatment is stressful as it requires injections into the eye every 4-8 weeks.
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The average age of risk is 50-60 years.
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AMD had various stages, it can jump from Stage I (minor) dry directly to wet type in some severe cases.
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A good prevention for those who have risk factors for AMD is a change in lifestyle habits, ex. quitting smoking or less computer use (blue light does damage), and eating a healthier diet. Optometrists recommend a lot of leafy greens and dark vegetables, which do contain lutein.
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The AREDS study found a formulation of vitamins that prevent AMD progression from Stage III to wet type, this included lutein in the mix.
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Dr. Ahmed concluded that not many studies has been done with lutein but there is a consensus it has a positive effect on AMD.  
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She also discussed that many patients will not recognize AMD as it develops. As the vision decreases or spotting occurs, they think they may only need glasses. More research is needed for the disease and potential treatments as well as vitamins like lutein which can help.  
 
She also discussed that many patients will not recognize AMD as it develops. As the vision decreases or spotting occurs, they think they may only need glasses. More research is needed for the disease and potential treatments as well as vitamins like lutein which can help.  
 
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*Put pictures heere*
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*Put pictures here*
 
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Revision as of 16:47, 17 September 2015