Why haven’t we cured arthritis? - Kaitlyn Sadtler and Heather J. Faust

503,250 views ・ 2019-11-07

TED-Ed


Videoni ijro etish uchun quyidagi inglizcha subtitrlarga ikki marta bosing.

Translator: Madina Juarez Reviewer: Nazarbek Nazarov
00:06
While regaling you with daring stories from her youth,
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Buvingiz sizni yoshligidagi jasurligi bilan lol qoldirsa ham,
00:09
it might be hard to believe your grandmother used to be a trapeze artist.
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siz buvingiz trapez ustasi bo'lganiga ishonishingiz qiyin bo'lsa kerak.
00:13
However, the bad backs, elbow pain, and creaky knees so common in older people
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Ammo bel va tirsakdagi og'rig', qariyalar orasida keng tarqalgan tizza qirsillashi
00:18
is more than just “old age."
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shunchaki “qarilik” emas.
00:20
In fact, the source of this stiffness plagues many young people as well.
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Aslida, bog'imdagi qotish holati ko'plab yoshlarni ham azoblantiradi.
00:25
The culprit is arthritis:
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Sabachisi artrit.
00:26
a condition that causes inflammation and pain in the joints
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Bu kasallik bo’g’imlarda yallig’lanish va og’riq keltiradi.
00:29
of over 90 million people in the U.S. alone.
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AQShda 90 million kishilarda mavjud.
00:33
But are stiff, creaky joints really inevitable?
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Ammo qotgan va qirsillaydigan bo'g'imlar muqarrar holatmi?
00:36
What makes arthritis so pervasive,
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Nima sababdan artrit ko'p uchraydiga kasallik
00:38
and why haven’t we found a cure for this widespread condition?
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va nima uchun haligacha bu keng tarqalgan kasallikga da'vo topmadik?
00:42
The first hurdle is that arthritis is actually a spectrum
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Birinchi to'siq bu artritning
00:45
of over 100 different arthritic conditions.
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yuzta turli hil holatlardan iboratligi.
00:48
All these conditions share symptoms of joint pain and inflammation,
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Bu barcha holatlarda bo'gimda og'riq hamda yallig'lanish kuzatiladi.
00:53
but the origin and severity of those symptoms vary widely.
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Ammo, bularni nima keltirishi hamda simptomlar avjligi farqlanadi.
00:57
Even the most common type, osteoarthritis,
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Hattoki, eng tarqalgan turi osteoartritni
00:59
is trickier to prevent than one might think.
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oldini olish biz oylagandek oson emas.
01:02
It’s a general misconception that arthritis is confined to old age.
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Artrit aynan bir yosh guruhiga munosibligi notog'ri tushunchadir.
01:06
The origins of osteoarthritis can often be traced to a patient’s early life,
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Osteoartrit sababi ko'pincha bemorning yoshligidagi
01:10
from any seemingly ordinary joint injury.
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oddiy jarohat tufayli yuzaga kelgani aniqlanishi mumkin.
01:13
Following impact, immune cells rush in to help clean and repair the damaged site
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Immunitet hujayralari tezda shikastlangan joyni tozalash va tiklashga yordam berib,
01:18
and begin pumping out enzymes,
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fermentlarni ishlab chiqaradi.
01:20
including matrix metalloproteinases and aggrecanases.
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Bu fermentlardan bir turlari bu matritca metalloproteinazlari va agrekanazlaridir.
01:24
These enzymes clear out the damaged tissue and contribute to inflammation.
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Bular shikastlangan joydagi toqimalarni tozalaydi va yallig'lanishni qozg'atadi.
01:28
But while this rapid swelling helps protect the joint during recovery,
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Tez shishish tizza bog'imining tiklanish vaqtida himoya qilsa ham,
01:31
inadequately healed tissue can cause these immune cells to overstay their welcome.
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lekin toqimar to'liq bitmasa immunitet hujayralari vaqtdan ortiq qolib ketadi.
01:36
The continuing flood of enzymes starts to degrade the cartilage,
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Fermentlar to'htamay ishlab chiqarilishi to'g'ayni yemiradi,
01:39
weakening the joint and leading to arthritis later on.
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bo'g'imni kuchsizlantiradi, va artrit holatini yaratadi.
01:43
Not all forms of arthritis can simply be traced to an old sports injury.
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Artritning barcha turlari o'tmishdagi sport shikasti tufayli emasdir.
01:47
Take rheumatoid arthritis, which affects 1.3 million U.S. adults.
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AQShda 1, 3 million kishida uchraydigan romatoid artritini misol qilib olamiz.
01:52
This condition is actually an autoimmune disease
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Bu kasallik aslida autoimmun kasalligidir,
01:55
in which autoantibodies target natively produced proteins,
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autoantitanalar tabiiy holda ishlab chiqariladigan oqsillarga hujum qiladi.
01:58
some of which are secreted by cartilage cells.
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Bu oqsillardan bir turini bog'im tog'ayi ishlab chiqaradi.
02:01
We still don’t know what causes this behavior,
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Bunga sababchi nima ekanligi hali ham no'malum.
02:04
but the result is that the body treats joint tissue like a foreign invader.
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Ammo, hulosa shuki organizm bog'im toqimasini horijiy bosqinchi deb ko'radi.
02:08
Immune cells infiltrate the joint despite there being no tissue damage to repair.
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Immunitet hujayralari toqimani sozlashga hojat bo'lmasa ham bostirib kiradi.
02:13
This response leads to chronic inflammation,
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Bu reaktciya surunkali yallig'lanishga olib borib,
02:15
which destroys bone and cartilage.
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suyak va to'g'ayni yemiradi.
02:18
Yet another condition, spondyloarthritis,
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Yana bitta kassalik turi, spondiloartrit,
02:21
has similarities to both of the conditions we’ve covered.
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bu paytgacha etib otilgan kasalliklarga o'hshash joylari bor.
02:24
Patients experience continuous inflammation in the joints
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Bemorlar bog'imlarida doimiy yallig'lanish kuzatiladi,
02:27
and at the sites where ligaments and tendons attach to bones,
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Bu holat pay va chandirlar suyakka qoshiladigan, hattoki avval
02:30
even without any initial injury.
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shikast yetqazilmagan joylarda ham kuzatiladi.
02:33
This leads to the flood of enzymes and degradation seen in osteoarthritis,
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Fermentlar toshib kelib, osteoartritdagi yemirilish holatiga oboradi.
02:37
but is driven by different inflammatory proteins called cytokines.
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Ammo, buni sababchisi sitokin oqsillari bo'ladi.
02:42
As the enzymes eat away at cartilage,
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Fermentlar to'g'ayni yemirgani sari,
02:44
the body attempts to stabilize smaller joints by fusing them together.
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organizm kichik bo'g'imlarni qo'shib ularni barqarorlashtirishga urinadi.
02:48
This process sometimes leads to outgrowths called bone spurs,
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Bu jarayon paytida ba'zan suyak shporalari deb ataladigan o'simtalar paydo bo'ladi,
02:52
which also cause intense stiffness and joint pain.
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bu o'simtalar kuchli bo'g'im og'rig'i va zichlanishiga sabab bo'ladi.
02:56
With so many factors causing arthritis,
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Artrit kasalligini keltiradigan omillar ko'p.
02:58
our current treatments are tailored to tackle specific symptoms
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Shu bois hozirda faqat alomatlarni da'volash usullari qollanadi,
03:01
rather than underlying causes.
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kasallik sababchilarini emas.
03:03
These range from promising MACI techniques,
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Bu usullarning biri МАТХ metodi bo'lib,
03:05
which harvest cells from small pieces of cartilage to grow replacement tissue.
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to'g'ayning bo'laklaridan hujayralar to'planib, ulardan yangi toqima yasaladi.
03:09
To a technique called microfracture,
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Boshqa bitta usul bu mikrofraktura.
03:12
where surgeons create small holes in the bone,
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Hirurglar kickik teshiklar yaratib, ular orqali
03:14
allowing bone marrow stem cells to leak out and form new cartilage.
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suyak iligidan ildiz hujayralari oqib chiqib yangi to'g'ay yaratadi.
03:19
As a last resort,
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Eng ohorgi chora
03:20
people with withered cartilage can even undergo full joint replacements.
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to'g'ayi butunlay yemirilgan bemorning toliq bo'g'imini almashtiriluvi.
03:24
But outside these drastic measures,
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Ammo bu kabi keskin choralar bo'lsa ham
03:26
the underlying drivers of autoimmune arthritis
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autoimmun artritni yaratuvchi sabablarini
03:29
still present a unique treatment challenge.
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da'volash hali ham mushkul masaladir.
03:32
Scientists are making progress with therapies that block TNF-alpha,
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Olimlar NOF-alfa oqsil terapiya usullarini qollab oldinga ketayaptilar.
03:36
one of the primary proteins causing inflammation in rheumatoid arthritis.
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Bu oqsil romatid artrit yallig'lanishing asosiy sababchilaridar biridir.
03:40
But even this approach only treats the symptoms of the condition, not the cause.
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Ammo, bu usul ham kasallik sababini emas, kasallik alomatlarini da'volaydi holos.
03:46
In the meantime, some of our best defenses against arthritis are lifestyle choices:
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Bu orada esa, artrit oldini olishning eng yanhshi himoyasi bu hayot tarzidir, misol
03:51
maintaining a healthy weight to take pressure off joints,
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sog'lom vazn ushlash, bu bo'g'imlarga bosimni tushiradi, yoki
03:54
low-impact exercises like yoga or cycling, and avoiding smoking.
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yoga va velosiped minish kabi oson mashq'ulotlar bajarish, va chekmaslik.
03:59
These arthritis-fighting behaviors can help us lead longer lives
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Bu kabi artrit oldini oladigan faoliyatlar uzoq umr kechirishimizga yordam beradi.
04:03
as we continue to research cures and treatments
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Bizlar turli hil artrit kasalliklarini da'volash yollarini
04:06
for the huge diversity of arthritic conditions.
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tadqiqot yoli bilan izlashni davom etamiz.
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