Ο εγκέφαλος μερικών ηλικιωμένων αρνείται να γεράσει -Παραμένει σαν των 18χρονων

210406-gamers
Διαβάστε επίσης

Αν κοιτάξει κανείς με το μικροσκόπιο τον εγκέφαλο ορισμένων ηλικιωμένων, δεν μπορεί να τον ξεχωρίσει από τον εγκέφαλο των νέων, δείχνει μια νέα επιστημονική έρευνα, με επικεφαλής μια ελληνίδα ερευνήτρια της διασποράς.

Η μελέτη επιβεβαιώνει ότι για μερικούς τυχερούς η τρίτη ηλικία δεν άφησε το αποτύπωμά της τον εγκέφαλό τους, γι’ αυτό, άλλωστε, συνεχίζουν να έχουν θαυμάσια μνήμη.

Έτσι, ενώ η απώλεια της μνήμης σε μικρότερο ή μεγαλύτερο βαθμό θεωρείται φυσική με το πέρασμα του χρόνου, ακόμη κι αν κανείς αποφύγει την άνοια, κάποιοι ηλικιωμένοι αποφεύγουν αυτή τη μοίρα.

Οι ερευνητές, με επικεφαλής τη δρα Αλεξάνδρα Τσουρούτογλου, η οποία από το 2014 διδάσκει στο Τμήμα Νευρολογίας της Ιατρικής Σχολής του Πανεπιστημίου Χάρβαρντ και διεξάγει έρευνα στο Γενικό Νοσοκομείο της Μασαχουσέτης (όπου και υπήρξε μεταδιδακτορική ερευνήτρια την περίοδο 2010-14), έκαναν τη σχετική δημοσίευση στο περιοδικό νευροεπιστήμης «The Journal of Neuroscience».

Οι επιστήμονες συνέκριναν, με τεχνικές απεικόνισης, την κατάσταση του εγκεφάλου 41 ατόμων ηλικίας 18 έως 35 ετών, με τον εγκέφαλο 17 ανθρώπων 60 έως 80 ετών, οι οποίοι προηγουμένως στα μνημονικά τεστ είχαν πετύχει επιδόσεις εξίσου καλές με αυτές των κατά 40 έως 50 χρόνια νεότερων.

Η συγκριτική εγκεφαλική απεικόνιση έδειξε ότι όντως αυτή η ελίτ των «σούπερ-ηλικιωμένων» έχει εγκέφαλο με τελείως νεανικά χαρακτηριστικά. Ενω ο φλοιός (το πιο ζωτικό τμήμα για τη νόηση, την μάθηση και τη μνήμη), καθώς και άλλα μέρη του εγκεφάλου όπως ο ιππόκαμπος, σταδιακά συρρικνώνονται λόγω της γήρανσης, σε ορισμένους δεν επέρχεται καμία συρρίκνωση και αυτές οι περιοχές συνεχίζουν να έχουν ίδιο μέγεθος με εκείνο των νέων.

«Σε μερικές περιπτώσεις δεν υπάρχει καμία διαφορά ανάμεσα στους σούπερ-ηλικιωμένους και στους νεαρούς ενηλίκους», δήλωσε η Τσουρούτογλου.

Όπως είπε, ενώ οι προηγούμενες έρευνες είχαν συγκρίνει αυτούς τους τυχερούς ηλικιωμένους άνω των 85 ετών με τους μεσήλικες, η νέα έρευνα για πρώτη φορά συνέκρινε σούπερ-ηλικιωμένους στην ηλικία της συνταξιοδότησης και μετά, με νέους ανθρώπους.

Η μεγάλη πρόκληση για τους επιστήμονες είναι πλέον να καταλάβουν πού κρύβεται το «μυστικό» αυτών των ανθρώπων, των οποίων ο εγκέφαλος αρνείται να γεράσει.

Αν το βρουν, πιθανώς θα «φρενάρουν» την απώλεια μνήμης και την έκπτωση άλλων λειτουργιών του νου στα γηρατειά.

Παλαιότερα άρθρα:

152 απαντήσεις στο “Ο εγκέφαλος μερικών ηλικιωμένων αρνείται να γεράσει -Παραμένει σαν των 18χρονων”

  1. Can I simply say what a reduction to search out someone who truly is aware of what theyre speaking about on the internet. You positively know the way to carry an issue to light and make it important. Extra people have to learn this and perceive this aspect of the story. I cant imagine youre not more in style because you positively have the gift.

  2. Hi! I could have sworn I’ve visited this website before but after going through many of the articles I realized it’s new to me. Regardless, I’m certainly pleased I discovered it and I’ll be bookmarking it and checking back frequently.

  3. What i don’t understood is if truth be told how you’re no longer really a lot more neatly-favored than you may be now. You’re so intelligent. You know thus significantly with regards to this subject, made me individually consider it from numerous numerous angles. Its like men and women aren’t fascinated except it’s one thing to accomplish with Girl gaga! Your own stuffs excellent. Always deal with it up!

  4. I loved as much as you’ll receive carried out right here. The sketch is attractive, your authored subject matter stylish. nonetheless, you command get bought an impatience over that you wish be delivering the following. unwell unquestionably come more formerly again as exactly the same nearly very often inside case you shield this increase.

  5. I just intend to show you that I am new to blogging and certainly valued your webpage. Probably I am prone to store your blog post . You undoubtedly have memorable article materials. Be Grateful For it for telling with us your current internet site post

  6. What i do not understood is in fact how you’re now not really much more well-appreciated than you might be right now. You’re so intelligent. You already know thus considerably relating to this matter, produced me in my opinion consider it from numerous numerous angles. Its like women and men don’t seem to be fascinated until it’s one thing to accomplish with Woman gaga! Your individual stuffs outstanding. At all times care for it up!

  7. Thanks for the helpful posting. It is also my belief that mesothelioma has an really long latency phase, which means that the signs of the disease might not emerge right until 30 to 50 years after the 1st exposure to asbestos fiber. Pleural mesothelioma, that is the most common style and affects the area throughout the lungs, could cause shortness of breath, chest pains, and also a persistent coughing, which may bring about coughing up body.

  8. hey there and thank you for your information – I’ve certainly picked up something new from right here. I did however expertise a few technical issues using this web site, since I experienced to reload the website a lot of times previous to I could get it to load properly. I had been wondering if your web host is OK? Not that I’m complaining, but sluggish loading instances times will sometimes affect your placement in google and can damage your high-quality score if advertising and marketing with Adwords. Well I am adding this RSS to my email and could look out for much more of your respective interesting content. Make sure you update this again soon..

  9. Very good blog! Do you have any recommendations for aspiring writers? I’m planning to start my own site soon but I’m a little lost on everything. Would you advise starting with a free platform like WordPress or go for a paid option? There are so many choices out there that I’m completely overwhelmed .. Any ideas? Appreciate it!

  10. Hi at that point. My name is Magali though Dislike really like being called like the idea. Vermont is where my property is and mother and father live regional. My friends say it isn’t good for me personally but what i love doing is to jog and I’ll be starting another thing along to it. Data processing is where his primary income emanates from. If you want to find out more away his website:

  11. An impressive share, I just given this onto a colleague who was doing a little analysis on this. And he in fact bought me breakfast because I found it for him.. smile. So let me reword that: Thnx for the treat! But yeah Thnkx for spending the time to discuss this, I feel strongly about it and love reading more on this topic. If possible, as you become expertise, would you mind updating your blog with more details? It is highly helpful for me. Big thumb up for this blog post!

  12. Nice post. I learn something more challenging on different blogs everyday. It will always be stimulating to read content from other writers and practice a little something from their store. I?d prefer to use some with the content on my blog whether you don?t mind. Natually I?ll give you a link on your web blog. Thanks for sharing.

  13. Greetings. I want to start by telling the author’s name – Thad. She works as a messenger. Her house turn out to be in Idaho and she loves each and every living now there are. It’s not really a huge common thing but what she likes doing is electronics as well as she has time to battle new it. Check out the latest news on my website:

  14. Aw, this was a very nice post. In thought I want to put in writing like this moreover ?taking time and actual effort to make an excellent article?however what can I say?I procrastinate alot and certainly not appear to get something done.

  15. Hello. I want to introduce writer. Her name is Mahalia Buchholtz. Puerto Rico is where my house is so i have trucking deliveries I need here. It’s not a known thing but what he likes doing is baking but he’s thinking on starting new things. Data processing is her profession but she plans on changing it again. Check out the latest news on my website:

  16. Hmm it appears like your website ate my first comment (it was super long) so I guess I’ll just sum it up what I submitted and say, I’m thoroughly enjoying your blog. I too am an aspiring blog writer but I’m still new to the whole thing. Do you have any recommendations for novice blog writers? I’d definitely appreciate it.|

  17. After study a few of the blog posts on your website now, and I truly like your way of blogging. I bookmarked it to my bookmark website list and will be checking back soon. Pls check out my web site as well and let me know what you think.

  18. Hi there. My name is Magali though Do not think really like being called like that the majority of. As a woman what she really loves is solving puzzles leaped she is intending to build an income with it. His day job is a procurement police agency. For a while he’s experienced Puerto Rico and his parents live nearby. She is running and maintaining a blog here: #link#

  19. Nice to you, I am Thomas Shattuck. Credit authorising is how she makes money but she plans on changing so it. His wife and him chose to reside in Vermont and the will never move. Climbing precisely what I do every networking. I am running and maintaining a blog here: #link#

  20. The author’s name is Thad Shattuck. Puerto Rico exactly where my house is and I have everything we need ideal. Data processing is how I earn a living. It’s not a common thing but what Choose doing is archery having said that i can’t render it my profession really. I’m not good at webdesign we might need to check my website: #link#

  21. There are certainly a lot of details like that to take into consideration. That is a great point to bring up. I offer the thoughts above as general inspiration but clearly there are questions like the one you bring up where the most important thing will be working in honest good faith. I don?t know if best practices have emerged around things like that, but I am sure that your job is clearly identified as a fair game. Both boys and girls feel the impact of just a moment?s pleasure, for the rest of their lives.

  22. There are certainly a lot of details like that to take into consideration. That is a great point to bring up. I offer the thoughts above as general inspiration but clearly there are questions like the one you bring up where the most important thing will be working in honest good faith. I don?t know if best practices have emerged around things like that, but I am sure that your job is clearly identified as a fair game. Both boys and girls feel the impact of just a moment?s pleasure, for the rest of their lives.

  23. Violeta Shiflet is what’s written to be with her birth certificate and she totally digs that nick name. One of her favorite hobbies is solving puzzles industry by storm . she is wanting to build an income with it. California is the place he loves most wonderful parents live nearby. Administering databases wherever his primary income obtain from and his salary already been really comforting. You can always find his website here: #link#

  24. naturally like your web-site but you have to test the spelling on several of your posts. Many of them are rife with spelling problems and I find it very bothersome to tell the truth however I’ll definitely come back again.|

  25. Magali may be the name her parents gave her but she never really liked that name. He’s always loved living in Vermont. I used to be unemployed these days I am a human resources assistant but soon we will start our own company. Researching fashion is something his wife doesn’t delight in but he is doing. I’ve been working on my website long now. Find out about it here: #link#

  26. Just wish to say your article is as astounding. The clearness on your post is simply nice and that i can assume you are a professional on this subject. Fine with your permission allow me to seize your RSS feed to keep up to date with imminent post. Thanks a million and please carry on the enjoyable work.|

  27. This is the right blog for anyone who wants to find out about this topic. You realize so much its almost hard to argue with you (not that I actually would want?HaHa). You definitely put a new spin on a topic thats been written about for years. Great stuff, just great!

  28. Today, I went to the beach front 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 totally off topic but I had to tell someone!|

  29. Miss may be the name I prefer to be called with it isn’t quite is not the name on my birth certificates. One of the very best things in exciting world of for him is archery and now he has time to take on new possessions. I am currently an administrative assistant it’s something I really enjoy. Vermont is the only place he’s been keep in mind that. Check out the latest news on my website: #link#

  30. Violeta Shiflet is what’s written to be with her birth certificate and she totally digs that address. One of her favorite hobbies is solving puzzles now toshiba has released she is intending to build an income with it. Administering databases exactly where his primary income is caused by and his salary recently been really fulfilling. California is the place he loves most and the parents live nearby. You can always find his website here: #link#

  31. I’m not sure exactly why but this blog is loading very slow for me. Is anyone else having this issue or is it a issue on my end? I’ll check back later on and see if the problem still exists.|

  32. I’m really inspired together with your writing talents and also with the format in your weblog. Is that this a paid subject matter or did you customize it yourself? Either way stay up the nice high quality writing, it is rare to peer a nice weblog like this one today..|

  33. Admiring the hard work you put into your site and detailed information you present. It’s great to come across a blog every once in a while that isn’t the same outdated rehashed material. Excellent read! I’ve bookmarked your site and I’m adding your RSS feeds to my Google account.|

  34. I like the helpful information you provide for your articles. I will bookmark your weblog and take a look at again right here frequently. I’m slightly certain I will be informed a lot of new stuff proper here! Good luck for the following!|

  35. Hi right there. My name is Magali. Administering databases the place I make money but I plan on changing the following. My friends say it is not good for me personally but things i love doing is liposuction costs comics nonetheless struggle track down time recycle online. For years I’ve been dwelling in California. He’s been working on his website for a little while now. Take a visit here: #link#

  36. This is the right blog for anyone who wants to find out about this topic. You realize so much its almost hard to argue with you (not that I actually would want?HaHa). You definitely put a new spin on a topic thats been written about for years. Great stuff, just great!

  37. Woah! I’m really enjoying the template/theme of this blog. It’s simple, yet effective. A lot of times it’s challenging to get that “perfect balance” between superb usability and visual appearance. I must say you’ve done a superb job with this. Also, the blog loads extremely quick for me on Firefox. Superb Blog!|

  38. Do you have a spam issue on this site; I also am a blogger, and I was wanting to know your situation; we have developed some nice methods and we are looking to exchange techniques with other folks, be sure to shoot me an email if interested.|

  39. Lance Shattuck is with an outdoor oven call me but place call me anything you like. Puerto Rico is where she and her husband live and she has exactly she needs there. Supervising is her profession. Climbing are some things that he’s been doing for long time. You can always find his website here: #link#

  40. Magali is the name mother and father gave her but she never really liked that name. He’s always loved living in Vermont. I used to be unemployed but now I am a recruiting assistant but soon my spouce and i will start our own home based business. Researching fashion is something his wife doesn’t like but he is doing. I’ve been working on my website for years now. Do it here: #link#

  41. Hi at this time there. My name is Magali. My friends say it isn’t good for me but things i love doing is to learn comics however i struggle to find time for it. Administering databases happens when I earn their living but I plan on changing information technology. For years I’ve been prevented California. He’s been working on his website for even though now. Take a visit here: #link#

  42. I do not even understand how I ended up right here, however I thought this post was good. I do not recognise who you might be but definitely you’re going to a well-known blogger when you are not already. Cheers!|

  43. 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.|

  44. Hello. Let me introduce the writer. Her name is Mahalia Buchholtz. Solving puzzles is what she loves doing. Vermont has always been my living place nevertheless i will end up being move every year or a couple. I am currently a procurement officer and the salary recently been really fulfilling. If you want to find out more check out my website: #link#

  45. Nice to meet you, I’m Thad. Vermont is where my home is and mom and dad live closeby. I am currently a procurement officer and the salary is really completing. It’s and not a common thing but what she likes doing is electronics currently she has time and take it on new strategies. You can find my website here: #link#

  46. You really make it seem so easy together with your presentation but I find this topic to be actually something that I believe I’d never understand. It kind of feels too complicated and extremely huge for me. I am having a look forward on your subsequent submit, I will try to get the hold of it!|

  47. Nice to meet you, I am Thomas Shattuck. Climbing just what I do every weeks. Credit authorising is how she makes money but she plans on changing things. His wife and him chose to live in Vermont and then he will never move. I am running and maintaining a blog here: #link#

Σχολιάστε