Re: Re: What is L-Tryosine?

[Guest guest]

> Re: What is L-Tryosine?

>

>>Pratick, L-Tyrosine is an amino acid and i believe a pre-cursor to a

>thyroid hormone, or the thyroid needs L-tyrosine, or something like

>that.

It's the " T " in " T3 " and " T4 " :-)

Suze Fisher

Lapdog Design, Inc.

Web Design & Development

http://members.bellatlantic.net/~vze3shjg

Weston A. Price Foundation Chapter Leader, Mid Coast Maine

http://www.westonaprice.org

----------------------------

“The diet-heart idea (the idea that saturated fats and cholesterol cause

heart disease) is the greatest scientific deception of our times.” --

Mann, MD, former Professor of Medicine and Biochemistry at Vanderbilt

University, Tennessee; heart disease researcher.

The International Network of Cholesterol Skeptics

<http://www.thincs.org>

----------------------------

[Guest guest]

--- laurainnewjersey <laurabusse@...> wrote:

>Pratick, L-Tyrosine is an amino acid and i believe a pre-cursor to a

> thyroid hormone, or the thyroid needs L-tyrosine, or something like

> that.

>

> since it's in food, there shouldn't be any side effects.

Thanks, do you know which foods contain this amino acid?

-Pratick

__________________________________________________

[Guest guest]

L-Tyrosine is a nonessential amino acid, that your body can produce on its own.

Your body uses it to produce

a.. dopamine

b.. norepinephrine (noradrenaline)

c.. epinephrine (adrenaline)

Induces short-term adrenaline hormones, may regulate mood, may improve memory

and alertness, may treat chronic fatigue, appetite suppression.

Continued use of L-Tyrosine may result in better memory. It may also improve

mental alertness.

It may also be of use in problems associated with high blood pressure,

allergies, sleep problems and in the treatment of parkinsons. L-Tyrosine is said

to help those on weight loss programmes.

L- Tyrosine is a precursor of the neurotransmitters norepinephrine and dopamine.

Therefore, tyrosine can act as a mood elevator and can supress appetite. It also

aids in the production of melanin (the pigment which gives hair and skin color)

and it aids in the function of the adrenal, thyroid and pituitary glands.

Tyrosine's use can be helpful with anxiety, depression, allergies, headaches and

people withdrawing from drugs.

Do not take in conjunction with MAO inhibitor drugs. Not for use by persons with

a history of malignant melanoma. Do not use if bipolar, pregnant, suspect

pregnancy, or lactating.

L-Tyrosine facts

http://www.nutriherb.net/l-tyrosine.html

HTH

CherylC

[Guest guest]

> Re: What is L-Tryosine?

>> >

>>

>>

>> >>Pratick, L-Tyrosine is an amino acid and i believe a pre-cursor to a

>> >thyroid hormone, or the thyroid needs L-tyrosine, or something like

>> >that.

>>

>> It's the " T " in " T3 " and " T4 " :-)

>

>Hmm... T3 is also called " triiodothyronine " and T4 is also called

> " thyroxine " or " tetraiodothyronine. " The " T " in TBG is

> " thyroxine-binding globulin " The " idodotyrosines " which essentially

>could be called T1 and T2 but aren't, are not abreviated as T[n], so I

>don't think the " T " stands for tyrosine. In all the cases where it is

>abreviated, the root is " thyro-, " not " tyro-, " which I assume refers

>to the thyroid itself. The number following refers to the number of

>iodines.

>

>http://www.merck.com/mrkshared/mmanual/figures/8fig1.jsp

>

>Chris

>

Ross wrote in " The Mood Cure " that the " T " in T3 and T4 is Tyrosine.

And she confirmed that the " 3 " and " 4 " refer to the number of iodine

molecules attached to it. I think this site explains it similarly:

" There are two main thyroid hormones: Triiodothironine (T3) 20% and

thyroxine (T4) 80%. Each thyroid hormone is made up of tyrosine (protein)

surrounded by four (T4) or three (T3) iodines. "

http://72.14.207.104/search?q=cache:XUQ4OcJpyEUJ:www.testmyhormones.com/thyr

oid_panel.htm+tyrosine+T3+T4 & hl=en

Even though T3 and T4 have names that do not involve " tyrosine " nonetheless

" T3 " , for instance, is an abbreviation for " TYROSINE + 3 molecules of

iodine " . Hence, the " T " stands for tyrosine as I mentioned above.

Suze Fisher

Lapdog Design, Inc.

Web Design & Development

http://members.bellatlantic.net/~vze3shjg

Weston A. Price Foundation Chapter Leader, Mid Coast Maine

http://www.westonaprice.org

----------------------------

“The diet-heart idea (the idea that saturated fats and cholesterol cause

heart disease) is the greatest scientific deception of our times.” --

Mann, MD, former Professor of Medicine and Biochemistry at Vanderbilt

University, Tennessee; heart disease researcher.

The International Network of Cholesterol Skeptics

<http://www.thincs.org>

----------------------------

[Guest guest]

I brought photos for people who like 'em.

This is a picture of tyrosine, with the side chain highlighted:

http://fig.cox.miami.edu/~cmallery/150/memb/tyrosine.jpg

This is a picture of T3 and T4:

http://www.anaesthetist.com/icu/organs/endocr/thyroid/images/t3t4.gif

(Chris)

> More importantly, T3 and T4 are NOT simply tyrosine iodized 3 and 4

> times respectively. They consist of a diiodotyrosine (tyrosine with

> two iodines)[1], joined to the aromatic portion of the side chain of a

> monoiodotyrosine (yielding three total iodines) or a diiodotyrosine

> (yielding four total iodines), respectively.[2]

In the second link, portion [1] would be everything to the right of

the central oxygen, and [2] would be everything to the left. Chris'

point is well-made; you can't play fast and loose with organic

nomenclature without everything falling to pieces. Notice how many

atoms you have to chop off to make T4 out of two tyrosines.

--

Persi M. Mon

superfruit@...

---------------------------------

" A 5-year-old could understand this! Fetch me a 5-year-old! "

[Guest guest]

> Re: What is L-Tryosine?

>

>

>More importantly, T3 and T4 are NOT simply tyrosine iodized 3 and 4

>times respectively. They consist of a diiodotyrosine (tyrosine with

>two iodines), joined to the aromatic portion of the side chain of a

>monoiodotyrosine (yielding three total iodines) or a diiodotyrosine

>(yielding four total iodines), respectively. These can NO LONGER be

>considered tyrosines which is why they are NOT called tyrosines. It

>is only that the chemical ceases to be referred to as a tyrosine that

>it begins to be referred to with the abbreviation " T[n], " which is why

>it is my contention that the " T " refers to a mature and active thyroid

>hormone, which the iodotyrosines are NOT. They are merely building

>blocks of mature thyroid hormone.

Then what is the name of the mature and active thyroid hormone that " T "

stands for? Thyronine? So, " T3 " would mean Thyronine + 3 iodine molecules?

Suze Fisher

Lapdog Design, Inc.

Web Design & Development

http://members.bellatlantic.net/~vze3shjg

Weston A. Price Foundation Chapter Leader, Mid Coast Maine

http://www.westonaprice.org

----------------------------

“The diet-heart idea (the idea that saturated fats and cholesterol cause

heart disease) is the greatest scientific deception of our times.” --

Mann, MD, former Professor of Medicine and Biochemistry at Vanderbilt

University, Tennessee; heart disease researcher.

The International Network of Cholesterol Skeptics

<http://www.thincs.org>

----------------------------