Vi khuẩn trong vũ trụ đang khiến phi hành gia gặp nguy hiểm

Vi khuẩn trong vũ trụ đang khiến phi hành gia gặp nguy hiểm

Vũ trụ là một môi trường vô cùng khắc nghiệt. Và trong điều kiện ấy, vi khuẩn có những hiệu ứng rất khác, và điều này đang khiến các nhà du hành vũ trụ phải lo ngại.

Ai cũng biết, du hành vũ trụ không phải là một chuyến đi chơi. Đối với những nhiệm vụ dài hạn, các phi hành gia phải đối diện với muôn vàn hiểm nguy đến từ bức xạ Mặt trời, thiên thạch, rác vũ trụ… chưa tính đến điều kiện môi trường vô cùng khắc nghiệt.

Và trong đó, có cả những nguy cơ đến từ chính Trái đất của chúng ta.

Cụ thể hơn, mối nguy ấy chính là các vi khuẩn tưởng như vô hại hoặc không quá nguy hiểm, đã theo chân các nhà du hành lên tận vũ trụ. Theo như một nghiên cứu mới đây từ ĐH Colorado Boulder (Mỹ), vi khuẩn khi vào vũ trụ có thể thay đổi hình dạng theo cách “không ngờ nhất”, giúp chúng chống chịu tốt hơn với phần lớn thuốc kháng sinh ngày nay.

Vi khuẩn trong vũ trụ đang khiến phi hành gia gặp nguy hiểm

Vi khuẩn khi vào vũ trụ có thể thay đổi hình dạng theo cách “không ngờ nhất”, giúp chúng chống chịu tốt hơn với thuốc kháng sinh.

Nghiên cứu lần này được công bố trên tạp chí khoa học Frontiers in Microbiology. Theo đó, các chuyên gia đã gửi mẫu vi khuẩn E. Coli (khuẩn ký sinh đường ruột rất phổ biến) lên trạm vũ trụ Quốc tế ISS. Họ cho vi khuẩn này tiếp xúc với gentamicin sulfate – chất kháng sinh có thể tiêu diệt chúng rất dễ dàng dưới Trái đất.

Nhưng các thí nghiệm cho thấy, lượng E. Coli phiên bản ngoài vũ trụ còn sót lại nhiều gấp 13 lần so với thí nghiệm tương tự dưới Trái đất. Hơn nữa, kích cỡ tế bào nhỏ hơn tới 63%.

“Ở môi trường ngoài vũ trụ, chúng ta biết rằng vi khuẩn sẽ có phản ứng rất khác, vậy nên cần kháng sinh với nồng độ cao hơn để xử lý chúng” – Luis Zea, tác giả nghiên cứu cho biết.

“Nhưng đây là lần đầu tiên chúng ta phân tích sự thay đổi về ngoại hình của vi khuẩn đối với môi trường vũ trụ”.

Khi không có trọng lực, vi khuẩn không còn dễ dàng tiếp cận các chất dinh dưỡng nữa. Chúng buộc phải thu nhỏ lại, khiến bề mặt nhỏ hơn để giảm tỉ lệ tiếp xúc với kháng sinh. Các tế bào cũng tăng độ dày, hình thành các túi khí để thuận tiện hơn cho việc truyền tín hiệu. Ngoài ra, chúng tụ thành nhóm, nhằm tạo thành tấm khiên bảo vệ các tế bào bên trong.

“Tất cả đã giúp cơ chế kháng thuốc của chúng mạnh hơn” – Zea chia sẻ. “Và thí nghiệm này cũng đem đến cho chúng ta cơ hội hiểu rõ cách thức hình thành kháng thể của vi khuẩn trên Trái đất”.


Vũ trụ là một nơi có rất nhiều hiểm nguy.

Hình thức kết hợp nhóm của E. Coli có thể liên hệ với cơ chế hình thành màng sinh học của nhiều loại vi khuẩn trên Trái đất. Đây là thuật ngữ ám chỉ việc các tế bào vi khuẩn kết hợp với nhau nhờ màng nhầy bên ngoài, ví dụ như các mảng bám trên răng, hoặc nguy hiểm hơn là khuẩn lao.

Theo Zea, nghiên cứu lần này sẽ giúp ích rất nhiều cho các nhiệm vụ du hành sau này. Các nhà khoa học cần đưa ra phương pháp điều trị tốt hơn với các chứng bệnh hình thành do vi khuẩn trên vũ trụ. Và nếu xử lý được, phương pháp ấy cũng sẽ áp dụng được ở trên Trái đất một cách hiệu quả.

Bình luận

Email của bạn sẽ không được hiển thị công khai.

  1. Have you ever heard of second life (sl for short). It is essentially a game where you can do anything you want. SL is literally my second life (pun intended lol). If you want to see more you can see these sl authors and blogs

  2. Some truly interesting points you have written.Helped me a lot, just what I was searching for : D.

  3. Did you understand these facts on CBD OIL and Full Spectrum CBD Hemp Oil? Cannabinoids are isolated from hemp using supercritical CO2 extraction. Thanks to modern-day innovation, the resulting solution is clean, without heavy metals and unnecessary waxes, naturally present in the plant, and the sucked liquid has a normal, oily consistency. CBD oil contains cannabidiol as a base component and may contain only trace quantities of tetrahydroxycannabidiol (THC). Works as a memory enhancer, enhancing concentration and coordination of movements, eliminating swelling and frequent infections. It enhances the conduction of stimuli in the course of autoimmune diseases (several sclerosis, amyotrophic sclerosis). It is suggested by medical professionals and pharmacists as an antioxidant and compound that blocks the action of proinflammatory cytokines (proteins), e.g. in Crohn’s disease or ulcerative intestine. RSO oil has a low CBD material, while high THC. Naturally, the essential task of RSO is to cause a psychoactive effect, although it can also promote “sick” brain structures. It is worth understanding that supplements of this type is primarily used by people to whom basic treatment does not bring relief in disease. The synergistic (enhancing) action of CBD and THC relative to each other is used here. When utilized individually, both cannabinoids can do much more together than. In addition, they jointly promote the division of non-active nerve cells, nurture the fatty envelope of the nerves, and prevent myelin inflammation that triggers loss of function in some autoimmune illness. There are also stories where marijuana in its natural type softened spasticity, minimized the frequency of convulsions and seizures, and reduced unpleasant scrapie in Parkinson’s illness. This is where the idea of receiving RSO, meant only for chronically ill people, come from . Both marijuana oil type CBD and RSO also include other cannabinoids, such as cannabichromene (CBC) and cannabigerol (CBG). The secret is not, nevertheless, that CBD often has actually a composition broadened to include flavones, flavonoids, terpenes, terpenoids, amino acids and omega acids. The distinction is primarily due to intentions guiding humankind to utilize one or the other item. CBD medical marijuana oil is a rather advantageous mix of cannabinoids, designed to secure against 21st century disease. It’s finest to utilize all of these substances together, as nature developed them and confined in cannabis inflorescences. Oil of marijuana in a type of pastime APR consists of small amounts of CBD, stabilized by the existence of THC. Producers focus on the synergistic effect of one compound relative to the other, while abandoning the presence of CBC and CBG. Why such a choice? – Modern scientific research shows that CBD + THC manage serious autoimmune illness, while CBC or CBG show minimal activity in the presence of both substances, much like terpenes, flavonoids or flavones, for that reason their material in the solution appears to be unnecessary. In addition, the cannabis strain from which THC and CBD are obtained include negligible quantities of other cannabinoids. RSO oil is totally unlawful in Poland, which is why it can not be acquired in any lawfully running shop on the market. Naturally, there are a number of amateur techniques for acquiring it, but it’s excellent to know that compounds acquired synthetically in house laboratories are unsure, untried, and the impact unknown. The solvent for the production of household RSO is generally gas, alcohol and even kerosene, which rather of curing, poison. Alcohols and their like hinder cannabinoids, therefore in reality, they do not bring anything brand-new to the medical world. Marijuana oil has actually already marked a new era in which male stopped to fear what is unknown, and started to rediscover what our ancestors had currently observed and utilize the significant capacity, initially glance, a little strange relationships, associated primarily with pathology. Medical cannabis, contrary to its name, does not suggest fermented female inflorescences and leaves containing psychedelic substances coiled in so-called “Joints”, but a beneficial oil without psychoactive THC. A basic individual, after taking dosages of medicinal marijuana and attaining the proper state of cannabinoids in the blood, can delight in increased resistance, lowered vulnerability to cancer, delayed aging and reduced risk of stroke or heart attack. CBD oil includes cannabidiol as a base ingredient and may include only trace amounts of tetrahydroxycannabidiol (THC). RSO oil has a low CBD content, while high THC. Both marijuana oil type CBD and RSO likewise consist of other cannabinoids, such as cannabichromene (CBC) and cannabigerol (CBG). CBD medical marijuana oil is a rather useful blend of cannabinoids, designed to safeguard against 21st century disease. Oil of cannabis in a kind of pastime APR includes little quantities of CBD, balanced by the existence of THC.

  4. I have been exploring for a little for any high-quality articles or blog posts in this sort of area . Exploring in Yahoo I eventually stumbled upon this web site. Reading this information So i’m happy to express that I have a very just right uncanny feeling I discovered just what I needed. I such a lot indisputably will make sure to do not put out of your mind this site and provides it a look regularly.

  5. We’re a group of volunteers and opening a new scheme in our community. Your site provided us with valuable information to work on. You have done an impressive job and our entire community will be grateful to you.

  6. I post them, they get 1 or 2 views, and then no more. I would like my content to do more than just give me a few views…how do I get them on the search engines or something like that? Will no one ever go to my blog just because I don’t post every day?.

  7. Hi,. . I want to post directly to my wordpress blog from my desktop, specifically from Command prompt. . . I know there is a protocol called xml-rpc, but that is of no help to me, as I don’t know what on earth it is. Any help would be appreciated..

  8. Basically, I want it to be on the main page where all of my posts go but then I also want to be able to put it on a separate page of my blog dedicated to only that subject. Hopefully this makes sense!.

  9. I have asked a question similar to this topic before and was helped out, but now id like to get specific. In the beginning of the movie he (Mark) posts on a blog as he works on the girl rating site, “FaceMash”, and as well as bash his ex girlfriend he updates his progress on creating the site. If anyone can directly quote this part of the movie I would be much obliged. Please and Thank You!.

  10. I absolutely love your blog and find most of your post’s to be what precisely I’m looking for. can you offer guest writers to write content available for you? I wouldn’t mind composing a post or elaborating on some of the subjects you write with regards to here. Again, awesome blog!|
    camouflage phone case

  11. I like this website so much, bookmarked. “I don’t care what is written about me so long as it isn’t true.” by Dorothy Parker.

  12. At this time it looks like Expression Engine is the best blogging platform out there right now. (from what I’ve read) Is that what you’re using on your blog?

  13. you’ve gotten an amazing weblog here! would you prefer to make some invite posts on my weblog?

  14. I have learn some excellent stuff here. Definitely price bookmarking for revisiting. I wonder how much effort you set to make this kind of great informative website.

  15. We absolutely love your blog and find nearly all of your post’s to be precisely what I’m looking for. Do you offer guest writers to write content for you personally? I wouldn’t mind publishing a post or elaborating on most of the subjects you write concerning here. Again, awesome site!

  16. excellent post, very informative. I wonder why the other specialists of this sector do not notice this. You should continue your writing. I’m confident, you’ve a great readers’ base already!

  17. Hi my loved one! I wish to say that this post is awesome, great written and include approximately all significant infos. I?¦d like to see more posts like this .

  18. I love your blog.. very nice colors & theme. Did you create this website yourself? Plz reply back as I’m looking to create my own blog and would like to know wheere u got this from. thanks

  19. Hi there, i read your blog from time to time and i own a similar one and i was just curious if you get a lot of spam feedback? If so how do you stop it, any plugin or anything you can advise? I get so much lately it’s driving me insane so any assistance is very much appreciated.

  20. Spot on with this write-up, I actually suppose this website wants rather more consideration. I’ll in all probability be again to learn way more, thanks for that info.

  21. Wow, awesome blog layout! How long have you been blogging for? you made blogging look easy. The overall look of your website is fantastic, let alone the content!

  22. I like this web site very much, Its a really nice berth to read and incur information. “What happens to the hole when the cheese is gone” by Bertolt Brecht.

  23. Heya i am for the first time here. I came across this board and I find It truly useful & it helped me out a lot. I hope to give something back and aid others like you helped me.

  24. I have not checked in here for some time as I thought it was getting boring, but the last several posts are great quality so I guess I will add you back to my everyday bloglist. You deserve it my friend 🙂

  25. Hey There. I discovered your blog the usage of msn. That is a really neatly written article. I’ll be sure to bookmark it and return to read extra of your useful information. Thanks for the post. I will definitely comeback.

  26. Hi there, I found your web site via Google while looking for a related topic, your website came up, it looks great. I’ve bookmarked it in my google bookmarks.

  27. I discovered your blog site on google and verify a number of of your early posts. Proceed to keep up the very good operate. I simply further up your RSS feed to my MSN News Reader. In search of forward to studying more from you afterward!…