Questions tagged [tissue-repair]

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1 answer
87 views

Which processes in the human body depend on natural selection among cells?

Are there processes in the human body which occur via natural selection among cells? Could anyone provide examples? E.g. when tissues are conditioned to be stronger, such as a rock climber's skin ...
8 votes
2 answers
2k views

Is collagen supplementation useless?

When collagen is digested is it broken up into usable components that the body can use to produce its own collagen? What evidence is there that supplementing with collagen type I & II etc.. can ...
1 vote
0 answers
103 views

what is the role of granulation tissue in bone fracture repair

When a bone fractures, let's say with a large enough gap that repair has to occur through secondary healing, vessel rupture will result in a hemorrhage that then coagulates, there's inflammation that ...
3 votes
1 answer
156 views

Do scars generally continue to undergo beneficial changes after maturation?

I understand that succumbing wound healing, a modulated scar would go through a process of scar healing which I understand to be remodulation and maturation. Do scars generally continue to evolve in ...
0 votes
0 answers
37 views

Do any animal have a tendon repair process that is more efficient than in humans?

Tendon injuries are notoriously slow to heal for humans, and quite often do not heal properly due to a variety of reasons. Do any animal have a tendon repair process that is more efficient than in ...
3 votes
1 answer
86 views

Cartilage regeneration

Why can we not regenerate cartilage in our ear and nose, while bones and flesh can heal? What makes it so resistant to regeneration. Can we artificially create it in the lab?
6 votes
1 answer
414 views

Why do obese people heal more slowly?

I recall an obese patient who was referred to a transplant clinic as his stitch wounds hadn't healed after a year. While there's a myriad of side effects caused by immunosuppressive medication after ...
1 vote
0 answers
33 views

How are negligibly senescent animals dealing with senescent cell buildup?

Well known animals like the rougheye rockfish, which can be bought from the fish market, appear to be negligily senecent. Senecent cell buildup appears to play a key role in senecence, in mice at ...
13 votes
1 answer
1k views

If cells regularly renew, why do we have scars?

Question may sound bit poetic but I have a pretty basic question here: Often we get a minor wound and cells renew and quickly "cover" it. But when we have deeper wounds, often they leave behind scars. ...
3 votes
1 answer
89 views

Why do we get scars?

Feeling the hardened tissue of a scar on my head I wondered what the purpose of that scarring is, such skin scars are pretty harmless but from what I understand internal scarring can cause major ...
3 votes
2 answers
40k views

If the top epidermal layer is burned away, what is it replaced with?

If the squamous (top) layer of epidermis, or skin, is burned or damaged in another way, will it then be replaced by the next layer of below? Also, from where does the basal membrane originate? Does ...
4 votes
0 answers
62 views

What are necessary parameters for a tissue scaffold to be biodegradable?`

I am a mechanical engineer with little biological experience, but I have recently been looking at tissue scaffoldings. My current understanding is as follows, but may be flawed. I would appreciate ...
12 votes
3 answers
10k views

What is happening when we get a tan?

Almost everyone nowadays wants that nice summer tan, but what exactly is going on beneath the skin? I've heard a few different theories about tanning - such as a tan is nothing but the pigmentation in ...
2 votes
1 answer
2k views

Why do some people burn and others tan?

Connected to What is happening when we get a tan? - Why do some people burn while other people tan? Very pale people tend to just burn while other people tan very nicely, what causes this difference? ...
10 votes
6 answers
3k views

What is the use of eye banks, if eyeball transplants do not exist at present?

Corneas are donated and transplanted, but not the eyeball. I don't understand. What is the purpose of donating a cornea without an eyeball to a blind person?
4 votes
1 answer
1k views

How are blood vessels affected by UV and infrared radiation?

The lining of the blood vessel as an interface and boundary layer is of existential necessity to the life-support of mammals. My question is: How are major blood vessels and the blood vessel lining ...
-2 votes
1 answer
2k views

How does protein help to cure wound? [closed]

I understand that the protein helps to repair body tissues. If I increase the intake of protein, would it help to cure the wound more quickly? I would like to know how does the protein reaches the ...
19 votes
2 answers
17k views

Possible? When a pregnant woman suffers an organ damage, fetus would send stem cells to the damage organ to help repair it?

I am quite sure that there is this blood-placental barrier between the mother and the baby so that nothing (except a type of antibody) can pass through it. But I remember reading somewhere that when ...