El sueño aumenta la reproducción de las células que participan en la formación de la mielina, el material aislante en las proyecciones de las células nerviosas en el cerebro y la médula espinal, según un estudio que publica la revista Journal of Neuroscience.
Desde hace años, los científicos saben que muchos genes se activan durante el sueño y se apagan en los períodos de vigilia. Sin embargo, no estaba claro de qué modo afecta el sueño a ciertas células específicas como los oligodendrocitos, que producen la mielina en el cerebro sano y responden a una lesión. De manera similar al aislamiento que rodea un cable eléctrico, la mielina permite a los impulsos eléctricos moverse rápidamente de una célula a la siguiente.
En el nuevo estudio, Chiara Cirelli y sus colegas de la Universidad de Wisconsin, en Estados Unidos, midieron la actividad genética en oligodendrocitos de ratones que durmieron o fueron obligados a permanecer despiertos. El equipo identificó que los genes que promueven la formación de la mielina se activan durante el sueño, mientras que los implicados en la muerte celular y la respuesta al estrés celular se encienden cuando los animales despiertan. Por si fuera poco, un análisis adicional reveló que la reproducción de las células precursoras de oligodendrocitos se duplican durante el sueño, especialmente durante el movimiento rápido de los ojos, es decir, en la fase del sueño denominada REM.
A la vista de los resultados, Cirelli sospecha que la pérdida extrema y/o crónica de sueño podría agravar algunos de los síntomas de la esclerosis múltiple (EM), una enfermedad que daña la mielina.
If some one wishes to be updated with hottest technologies then he must be go to see this web site and be up to date daily.|
that would be the finish of this article. Right here you will obtain some web sites that we believe you will appreciate, just click the links over
At this time it appears like Drupal is the best blogging platform available right now. (from what I’ve read) Is that what you are using on your blog?|Great post however I was wondering if you could write a litte more on this topic? I’d be very grateful if you could elaborate a little bit further. Appreciate it!|Good day! I know this is kind of off topic but I was wondering if you knew where I could get a captcha plugin for my comment form? I’m using the same blog platform as yours and I’m having problems finding one? Thanks a lot!|When I originally commented I clicked the «Notify me when new comments are added» checkbox and now each time a comment is added I get several e-mails with the same comment. Is there any way you can remove people from that service? Appreciate it!|Good day! This is my first visit to your blog! We are a group of volunteers and starting a new initiative in a community in the same niche. Your blog provided us beneficial information to work on. You have done a extraordinary job!|Hello! I know this is somewhat off topic but I was wondering which blog platform are you using for this site? I’m getting sick and tired of WordPress because I’ve had issues with hackers and I’m looking at alternatives for another platform. I would be great if you could point me in the direction of a good platform.|Hi there! This post could not be written any better! Reading this post reminds me of my previous room mate! He always kept talking about this. I will forward this post to him. Fairly certain he will have a good read. Many thanks for sharing!|Write more, thats all I have to say. Literally, it seems as though you relied on the video to make your point. You obviously know what youre talking about, why waste your intelligence on just posting videos to your weblog when you could be giving us something informative to read?|Today, I went to the beachfront with my kids. I found a sea shell and gave it to my 4 year old daughter and said «You can hear the ocean if you put this to your ear.» She placed the shell to her ear and screamed. There was a hermit crab inside and it pinched her ear. She never wants to go back! LoL I know this is entirely off topic but I had to tell someone!|Yesterday, while I was at work, my cousin stole my iphone and tested to see if it can survive a twenty five foot drop, just so she can be a youtube sensation. My iPad is now broken and she has 83 views. I know this is completely off topic but I had to share it with someone!|I was curious if you ever considered changing the structure of your website? Its very well written; I love what youve got to say. But maybe you could a little more in the way of content so people could connect with it better. Youve got an awful lot of text for only having one or 2 pictures. Maybe you could space it out better?|Howdy, i read your blog from time to time and i own a similar one and i was just wondering if you get a lot of spam remarks? If so how do you stop it, any plugin or anything you can advise? I get so much lately it’s driving me crazy so any help is very much appreciated.|This design is wicked! You definitely know how to keep a reader amused. Between your wit and your videos, I was almost moved to start my own blog (well, almost…HaHa!) Fantastic job. I really loved what you had to say, and more than that, how you presented it. Too cool!|I’m truly enjoying the design and layout of your site. It’s a very easy on the eyes which makes it much more pleasant for me to come here and visit more often. Did you hire out a developer to create your theme? Outstanding work!|Hello! I could have sworn I’ve been to this blog before but after checking through some of the post I realized it’s new to me. Anyhow, I’m definitely glad I found it and I’ll be bookmarking and checking back frequently!|Hello there! Would you mind if I share your blog with my myspace group? There’s a lot of people that I think would really enjoy your content. Please let me know. Cheers|Hey there, I think your site might be having browser compatibility issues. When I look at your website in Chrome, it looks fine but when opening in Internet Explorer, it has some overlapping. I just wanted to give you a quick heads up! Other then that, awesome blog!|Sweet blog! I found it while searching on Yahoo News. Do you have any tips on how to get listed in Yahoo News? I’ve been trying for a while but I never seem to get there! Thanks|Hello there! This is kind of off topic but I need some help from an established blog. Is it very difficult to set up your own blog? I’m not very techincal but I can figure things out pretty fast. I’m thinking about creating my own but I’m not sure where to start. Do you have any ideas or suggestions? Appreciate it|Hi! Quick question that’s totally off topic. Do you know how to make your site mobile friendly? My blog looks weird when browsing from my apple iphone. I’m trying to find a theme or plugin that might be able to resolve this issue. If you have any suggestions, please share. Many thanks!|I’m not that much of a online reader to be honest but your blogs really nice, keep it up! I’ll go ahead and bookmark your website to come back later. Many thanks|I love your blog.. very nice colors & theme. Did you design this website yourself or did you hire someone to do it for you? Plz answer back as I’m looking to create my own blog and would like to find out where u got this from. thanks a lot|Incredible! This blog looks just like my old one! It’s on a entirely different topic but it has pretty much the same layout and design. Wonderful choice of colors!|Howdy just wanted to give you a brief heads up and let you know a few of the images aren’t loading properly. I’m not sure why but I think its a linking issue. I’ve tried it in two different internet browsers and both show the same outcome.|Hi are using WordPress for your blog platform? I’m new to the blog world but I’m trying to get started and set up my own. Do you require any coding expertise to make your own blog? Any help would be greatly appreciated!|Whats up this is kinda of off topic but I was wondering if blogs use WYSIWYG editors or if you have to manually code with HTML. I’m starting a blog soon but have no coding know-how so I wanted to get guidance from someone with experience. Any help would be enormously appreciated!|Heya! I just wanted to ask if you ever have any issues with hackers? My last blog (wordpress) was hacked and I ended up losing several weeks of hard work due to no data backup. Do you have any solutions to stop hackers?|Hi there! Do you use Twitter? I’d like to follow you if that would be ok. I’m absolutely enjoying your blog and look forward to new posts.|Hello! Do you know if they make any plugins to safeguard against hackers? I’m kinda paranoid about losing everything I’ve worked hard on. Any suggestions?|Howdy! Do you know if they make any plugins to help with Search Engine Optimization? I’m trying to get my blog to rank for some targeted keywords but I’m not seeing very good gains. If you know of any please share. Thank you!|I know this if off topic but I’m looking into starting my own weblog and was wondering what all is needed to get setup? I’m assuming having a blog like yours would cost a pretty penny? I’m not very web smart so I’m not 100% positive. Any tips or advice would be greatly appreciated. Kudos|Hmm is anyone else experiencing problems with the pictures on this blog loading? I’m trying to find out if its a problem on my end or if it’s the blog. Any feedback would be greatly appreciated.|I’m not sure why but this website is loading extremely slow for me. Is anyone else having this issue or is it a problem on my end? I’ll check back later and see if the problem still exists.|Hey there! I’m at work browsing your blog from my new iphone 4! Just wanted to say I love reading your blog and look forward to all your posts! Keep up the excellent work!|Wow that was strange. I just wrote an very long comment but after I clicked submit my comment didn’t show up. Grrrr… well I’m not writing all that over again. Anyhow, just wanted to say excellent blog!|Heya great website! Does running a blog similar to this take a great deal of work? I have very little expertise in programming but I had been hoping to start my own blog in the near future. Anyways, if you have any recommendations or techniques for new blog owners please share. I understand this is off topic however I just had to ask. Kudos!|Howdy! I realize this is somewhat off-topic but I had to ask. Does running a well-established blog like yours require a large amount of work? I am completely new to writing a blog but I do write in my journal everyday. I’d like to start a blog so I can easily share my personal experience and feelings online. Please let me know if you have any recommendations or tips for new aspiring blog owners. Thankyou!|Hey I know this is off topic but I was wondering if you knew of any widgets I could add to my blog that automatically tweet my newest twitter updates. I’ve been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with something like this. Please let me know if you run into anything. I truly enjoy reading your blog and I look forward to your new updates.|I do not know if it’s just me or if everybody else encountering issues with your website. It appears as though some of the text within your posts are running off the screen. Can somebody else please provide feedback and let me know if this is happening to them as well? This could be a problem with my web browser because I’ve had this happen previously. Many thanks|First off I want to say awesome blog! I had a quick question in which I’d like to ask if you don’t mind. I was curious to find out how you center yourself and clear your head before writing. I have had difficulty clearing my mind in getting my ideas out there. I truly do take pleasure in writing however it just seems like the first 10 to 15 minutes are lost simply just trying to figure out how to begin. Any ideas or hints? Thanks!
I do think this is a real great blog. Really special.