hair fallicle

Tuesday, June 22, 2010

Biology question about drug used for chemotherapy?

5-Fluoro-uracil (5-FU) is a drug commonly used in chemotherapy treatment of cancer. Cancer cells are usually very fast growing cells; other cells in your body, which are also fast growing, are bone marrow cells (which produce red and white blood cells) and hair follicle cells (which produce hair). Suggest why 5-FU can be a good treatment for cancer. Also, describe why 5-FU has side effects of low blood counts and hair loss.

Biology question about drug used for chemotherapy?

5-FU is an anti-metabolite which means it resembles a naturally occurring nuclear structural component. After being converted to its active form in the body, 5-FU is competes with deoxyuridine monophosphate (dUMP) for the enzyme thymidylate synthetase. The binding of 5-FU to thymidylate synthetase prevents the cell from producing thymidine and consequently thymine (one of the four base pairs of DNA) resulting in decreased DNA synthesis, imbalanced cell growth and cell death. 5-FU is also inhibits RNA synthesis by acting as an analog for uracil. DNA and RNA synthesis is necessary for cell replication so the faster a cell duplicates the more affected it will be. As you stated, cancer cells are usually very fast growing cells. This makes 5-FU a good treatment for cancer since it slows or prevents tumor growth. However, chemotherapy drugs not only affect cancer cell but all cells in the body. Therefore, 5-FU also has a significant impact on other fast growing cell such as bone marrow and hair follicles resulting in low blood counts and hair loss.

Biology question about drug used for chemotherapy?

I'm a Realtor but having had four minor and three major cancers, I know quite a bit. I also have ITP but all the standard remedies failed.

Your questions sounds like your prof is asking you to think creatively. Too bad that you're not up to it.

What is wrong with this picture? see below?

I used to belong to this church that would constantly harp on you to attend the business meetings and in this denomination they do 1 per quarter 4X a year, they would be on you like a nit on a hair follicle to attend.

Yet this same church could not find time or make it a proirity to have felowship, coffee house care groups or cell groups, and when they had to cancel such events they never rescheduled, and the rare times they did have these events were few and far between,

I find this to be very wrong and unsettling? Do you feel there is something wrong with this picture?

What is wrong with this picture? see below?

It looks like the church was more interested in turning a profit than saving anyone's soul. I'm sure the preacher gave plenty of "money" sermons in your old church. Perhaps they are hoping to be a mega-church like Joel Osteen's. Did the preacher preach nothing but positive things to the congregation?

What is wrong with this picture? see below?

I think this is merely typical for religions all over the world. sad but true.

What is wrong with this picture? see below?

Yes, it is unsettling and unfortunately all too common today.

Will threading....?

destroy the hair follicle and retard hair growth over a period of time like waxing is said to do since they are both methods of pulling hair out?

Will threading....?

Waxing and threading are both methods of pulling out hair. When hair is waxed or threaded on a regular basis, the hair follicle will develop scar tissue and will start to come back thinner and slower. Over time eventually not growing back at all. The downside is it takes years of waxing or threading for it to stop growing.

Will threading....?

threading takes some of the hair right out of the root and then just cuts the others off at the top of the skin.. but over time it does stunt the hairgrowth, i prefer it to waxing =]

Will threading....?

no you see the difference is when you wax the wax pulls of a thin layer of skin which is bad and exposes your skin to harmful sunrays while threading just pulls your hair out...it doesn't destroy the folical at all

How do i friggin get rid of these brown dots on my leggg!!!?

okay so i have these brown dots all over my legs.

and no its not because of my shaiving. my legs have just always been like this.

but i have heard that its darkening of the hair follicle

and i have also heard to that you can get laser hair removal to get rid of it.

well im only 16 and hair removal is deffinitely not an option. especially since I'm only 16 and its a lot of money.

so does anybody know if there are ways to get rid of these annoying ugly brown dots??

such as a cream or something??

How do i friggin get rid of these brown dots on my leggg!!!?

SOUNDS LIKE FRECKLES!!!! DEAL!

How do i friggin get rid of these brown dots on my leggg!!!?

Try going to a doctor, they can subscribe you a cream or something to help it go away.

Or talk to your parents about it.

How do i friggin get rid of these brown dots on my leggg!!!?

darker type of freckles perhaps, go consult a dermatologist dear.

How do i friggin get rid of these brown dots on my leggg!!!?

R U girl?

On which part of leg u have the brown dot.Lower or upper region like near to your lower abdoman. from how long u have.Anything else are u feeling within ur body unnatural like stiffness of pain?

What is this?

There is this bump thing near the base of my penis. Its kinda redish around that area. Its about 1/4th of an inch in length and half that size in width. Its been there since yesterday. Ive always had a really small 'bump there though, which just seemed to be a hair follicle, (ive had the small 'bump' ever since i hit puberty.) but now theres a pimple looking bump there. Im thinking this is either a pimple, or a ingrown hair. but i could be wrong.

My reason why it could be a pimple:

Im embarrassed to say this but i havent washed that area in a long while. and it is a little dirty down there..

Reason why it could be a ingrown hair:

There are small hairs growing around this bump which means this could be a hair that cant find its way out.

Oh by the way, i know this aint the place for this kind of question but the 'health' section is going slow and wont show my question.

What is this?

hate to tell ya this dude...but yer gonna die...

What is this?

Sounds like a blood blister and that has nothing to do with hair. Have a doctor take a look at it and lance it if necessary and by all means wash the area.

Need Some Help ASAP!!!?

I have a huge problem. The Children's Aid have been really set on bothering me when i am a good mom and they make no issues or anything about my husband but because my dad has history with them then they feel the need to pick on me.

On Dec13th my brother called them and said i was a drug user(which i am not) so i volunteered to do a hair follicle drug test even though they never asked for it, i just wanted them to see i don't use drugs.

The hair was taken on January 18th and the tests came back today and they said i tested positive for weed. I was like WTF?!?! you guys are liars and did something to falsify the test. They wouldn't give me any particulars on the test itself, not even the phone number of the lab that conducted the test.

They said i test with 0.25 ng/mg and yet my husband tested negative.

I am 36 weeks pregnant and would never ever use drugs so i am just wondering does anyone here know what the levels are?

low,medium,high and what does ng/mg mean?

Need Some Help ASAP!!!?

I'm so sorry to hear that, it must be very distressing for you. It may be possible that they made a mistake as they probably do many of these tests and could have easily got the results mixed up. This is not fair on you.

I am not sure what the levels are but you should contact them and look into this further and talk to someone.

good luck

xxxx

Need Some Help ASAP!!!?

Im only a kid so I dont really know, but I just wanted to say that thats tough and GOOD LUCK!

Need Some Help ASAP!!!?

If you were around someone that has smoked weed around say about 2 months ago the it can still be in your hair. Whenever you ingest something like any chemicals it has to grow out of your hair and if it's long and you don't cut it then it will stay in your hair. I'm not saying you did smoke weed but it could have come from you being around someone that does.

Good luck

Creationists/Intelligent Design proponents, how do you explain goose bumps?

Goose bumps are caused by the erector pili muscles, the tiny muscles that are connected to each hair follicle and the skin. When they contract, a "goosebump" forms, causing the hair around it to stand erect.

In nature, the purpose of "hair raising" is to make an animal appear larger, and hence more fierce to it's opponent. Of course, human body hair is far too sparse to create any visual threat, so goosebumps are essentially useless to us.

It has been argued that more primitive versions of man had significantly more hair than we do, which would explain the vestigial presence of them in modern humans.

So which makes sense?

Humans have vestigial goosebumps because we descended from a primitive hominid that once used them for survival...

God made goosebumps in animals as a SPECIFIC means for their survival, and then copied them IDENTICALLY on humans, even though they serve absolutely no useful purpose for our survival.