1 Flashcards

1
Q

Folate is also known as:

A

Vitamin B9

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2
Q

The recommended daily intake level of folate is ___

A

400 micrograms from foods or dietary supplements.

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3
Q

Low levels of B9 in early pregnancy are believed to be the cause of ___.

A

More than half of babies born with neural tube defects.

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4
Q

Why can a folate deficiency result in low numbers of large red blood cells (a type of anemia).

A

B9 is essential in the production of DNA and RNA. As such the inhibited DNA synthesis results in an impaired cell cycle (the mitosis stage can’t be reached). This results in lack of red blood cells: Megaloblastic anemia.

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5
Q

Megaloblastic anemia:

A

Megaloblastic anemia is a condition in which the bone marrow produces unusually large, structurally abnormal, immature red blood cells (megaloblasts).

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6
Q

Where are red blood cells produced?

A

Red blood cells, most white blood cells, and platelets are produced in the bone marrow, the soft fatty tissue inside bone cavities.

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7
Q

Since red blood cells are necessary to transport oxygen, what is a side effect of low folate?

A

Low oxygenated blood = fatigue

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8
Q

What causes folate deficiency?

A

Not ingesting enough foods that supply B9

You have a medical condition that gives you a higher need to B9

The body doesn’t ABSORB enough. Your body doesn’t absorb enough folic acid. This might happen if you drink too much alcohol or have severe kidney problems that require dialysis.

You take certain medications with side effects.

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9
Q

What is anemia?

A

A condition in which the blood doesn’t have enough healthy red blood cells

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10
Q

What are the side effects of anemia?

A

Anemia may make you:

Feel weak and tired.
Feel lightheaded.
Be forgetful.
Feel grouchy.
Lose your appetite and lose weight.
Have trouble concentrating.
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11
Q

Can B9 stay in the blood?

A

No. Its water soluble which means it dissolves in the body until it’s either absorbed or peed out. This means the body needs to continually resupplied with it.

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12
Q

Are folate and folic acid the same

thing?

A

No. Folate is the naturally occurring form, and folic acid is the synthesized version found in fortified foods.

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13
Q

Is Folic Acid food fortification normal?

A

It’s actually required legally as of 1998, after it was deemed mandatory due to overwhelming evidence of its protective effect against neural tube defects (NTD) in newborns.

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14
Q

What is the difference between Folate and Folic Acid?

A

Folate is natural, Folic acid is made artificially.

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15
Q

Is it normal to find Folic Acid in food?

A

More than normal. It’s been standardized since it was proven to help reduce the chances of babies being born with NTDs.

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16
Q

Where is B9 naturally found (as Folate)?

A

Leafy Vegetables primarily, but also to a lesser degree in grains, fruits, legumes, etc.

17
Q

How much Folate can the body stock up?

A

None, as B vitamins are water soluble and so are peed out.

18
Q

Transmethylation:

A

A biologically important organic chemical reaction in which a methyl group is transferred from one compound to another.

19
Q

Methyl group:

A

A hydrocarbon derived from Methane, found in many organic compounds. It is normally part of a larger molecule.

20
Q

How can a B9 and/or B12 deficiency potentially cause depression (amongst many other issues)?

A

An interferred transmethylation of methionine from homocysteine.

In order to sustain sufficient reaction rates during metabolic stress, this reaction requires adequate levels of vitamin B12 and folic acid. Methyl tetrahydrofolate delivers methyl groups to form the active methyl form of vitamin B12 that is required for methylation of homocysteine. Deficiencies of vitamin B12 or folic acid cause increased levels of circulating homocysteine. Elevated homocysteine is a risk factor for vascular injuries by oxidative mechanisms which can contribute to cerebral dysfunction. All of these can lead to the development of various disorders, including depression

21
Q

What is L-Methylfolate and how can it help?

A

It’s a supplemental form of Folate that can cross the blood-brain barrier and plays a role in neurotransmitter synthesis. It indirectly facilitates the synthesis of serotonin, dopamine, and norepinephrine, three neurotransmitters involved in mood regulation and other important functions. This means it also helps SSRI’s and SNRI’s be more effective.

22
Q

Is information sent between neurons by electricity or by chemicals?

A

Both. Electrical signals are not about to cross the gap between most neurons so they are converted into chemical signals to cross the gap. After they cross they are absorbed by the neuron and then changed back into an electric signal.

23
Q

What are neurotransmitters predominantly made of?

A

Amino Acids

24
Q

What is the most common neurotransmitter? What does it do?

A

Glutamate, also known as glutamic acid, is taken up by the body in order to build proteins. Glutamate is the most abundant stimulating neurotransmitter in the nervous system. Important for long term potentiation, learning, and memory. Also used as a salty food additive, often found in asian cuisines

25
Q

How quickly do brain neurons regenerate?

A

Brain neurons do not regenerate. We have a fixed number that slowly dies (we have billions)

26
Q

What are the three principal regions of a neuron? Which part contains the nucleus?

A

Cell body, dendrites, and an axon. The cell body contains the nucleus.