Correlation Boxes Flashcards

1
Q

What disease is indicated by elevated levels of alkaline phosphatase in the blood?

A

Bone disease

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2
Q

What disease is indicated by elevated levels of sorbitol dehydrogenase or lactate dehydrogenase (LDH-5) in the blood?

A

Obstructive liver disease

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3
Q

What disease is indicated by elevated levels of acid phosphatase in the blood?

A

Prostatic cancer

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4
Q

What disease is indicated by elevated levels of amylase in the blood?

A

Acute pancreatitis

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5
Q

What disease is indicated by elevated levels of aldolase and aspartate aminotransferase (AST) in the blood?

A

Muscular dystrophy

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6
Q

What disease is indicated by elevated levels of alanine aminotransferase (ALT) or CK-MM isoform of creatine kinase in the blood?

A

Liver disorder

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7
Q

Why do sulfa drugs only affect bacteria?

A

Because humans acquire folate as a vitamin from their diet

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8
Q

________ effect = aerobic conditions suppressing glycolysis

A

Pasteur

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9
Q

Many cancers exhibit increased rates of glycolysis even in presence of O2. This is know as the ________ effect

A

Warburg

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10
Q

What sugar is a 4C sugar, an artificial sweetener, is hard to metabolize giving little energy and doesnt cause tooth decay?

A

Erythritol

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11
Q

What sugar s a 5C sugar, a natural sweetener, low glycemic index, and causes no tooth decay?

A

Xylitol

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12
Q

What sugar is a sugar alcohol used for energy storage by microorganisms and plants, used to treat trauma and kidney failure, can make blood brain barrier permeable to drugs, and can be used to treat cystic fibrosis when inhaled?

A

Mannitol

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13
Q

What sugar is used as a sweetener in chewing gum, tooth paste and mouthwash and can be used as a laxative?

A

Sorbitol

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14
Q

Increased cholesterol in bile with little bile salt leads to what?

A

Gallstones

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15
Q

When cholesterol levels are too high, what type of vitamins can become deficient?

A

Fat-soluble

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16
Q

The oxidizing environment for formation of disulfide bonds does not exist where and why>

A

Cytoplasm -> because of the high concentration of glutathione.

  • Occurs in the RER
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17
Q

A ________ nitrogen balance means nitrogen intake exceeds nitrogen excretion. This coincides with situations n which protein is being synthesized such as in growing children, pregnant women, and patients recovering from surgery or traumatic injury.

A

Positive

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18
Q

A _________ nitrogen balance means nitrogen loss exceeds nitrogen intake and coincides with situations in which issue is being degraded such as in patients suffering from malnutrition or starvation, third degree burns, and cachexia (muscle wasting) due to terminal cancer

A

Negative

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19
Q

What does the rate at which a reaction proceeds depend on?

A

The enzyme that catalyzes the reaction

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20
Q

What are metalloenzymes inhibited by?

A

Chelating agents -> they bind to and remove the metals from their metalloenzymes

Ex. EDTA

21
Q

What is the treatment for lead poisoning?

A

Ca-EDTA -> Pb has a higher affinity for EDTA than calcium so it displaces Ca2+ from EDTA creating Pb-EDTA which is excreted in the urine

22
Q

What condition is a rare autosomal condition that is caused by mutation in GLUT2 transporter located in hepatocytes, pancreatic beta cells, enterocytes and renal tubular cells and leads to impaired transport of glucose, galactose and fructose?

A

Fanconi-Bickel Syndrome

  • Treatment = vitamin D and phosphate to treat rickets and indigestion of uncooked corn starch to provide a sustained supply of glucose
23
Q

What disease is characterized by defective GlcNAc-PT gene, where instead of the M6P proteins being targeted to the lysosomes they are secreted and can be detected in circulation?

A

Inclusion Cell (I-cell) disease

24
Q

What disease is characterized by a cancer of the blood and bone marrow marked by a buildup of immature white blood cells and is linked with the presence of PML-RARgamma, where RML-RARgamma acts to repress the transcription of certain genes and prevent cell differentiation resulting in the accumulation of immature promyelocytes?

A

Acute promyelocytic leukemia

25
What can an overdose of acetominophen deplete?
GSH -> N-acetylcysteine is administered to restore
26
_________ is used to produce thyroxine (T4) and Triiodothyroine (T3)
Thyroglobulin
27
Is T3 or T4 more potent?
T3 -> but T3 has a shorter half life in circulation
28
What type of diet increases urea production?
High protein diet
29
In what 4 locations does PPP occur?
Erythrocytes, testes, mammary glands and adrenal cortex
30
What organ is the principle site for nucleotide synthesis?
Liver
31
Nucleosides appear in important biomolecules such as adenosine in vitamin ______
B12
32
What enzyme is the drug target for immunosuppressant mycophenolic acid, which disrupts DNA replication in B and T cells depriving those cells of adequate supplies of GMP and therefore GTP?
IMP dehydrogenase - Disruption of GMP synthesis is a useful strategy in drugs preventing graft rejection
33
What are alcoholics especially prone to?
Lactic acidosis
34
Compare and contrast the complete oxidation of one glucose molecule versus palmitate
``` Glucose = 36-38 ATP Palmitate = 129 ATP ```
35
What poison looks like lipoic acid's 2 -SH groups and binds to thiol groups irreversibly, limiting availability of lipoic acid which will effect PDH and all the enzymes that use lipoic acid as a coenzyme?
Arsenite - Arsenite is a slow poison because it takes time for it to affect enough enzymes to become lethal. It builds up in the body and can be detected in the hair
36
_______ = Thiamine (Vitamin B1) deficiency
Beriberi
37
What does dry beriberi affect?
Cardiovascular function - This is diagnosed by measuring blood thiamine levels
38
What is the treatment for Beriberi?
Thiamine supplementation
39
What is Wernicke-Korsakoff syndrome?
Thiamine deficiency in chronic alcoholics - This is a type of Beriberi
40
What is the mechanism of rat poison?
Fluoroacetate + CoA -> Fluoroacetyl CoA + OAA -> Fluorocitrate -> Fluorocitrate acts as a competitive inhibitor of aconitase which leads to the accumulation of citrate which inhibits citrate synthase - Fluorocitrate is also an allosteric inhibitor of PFK-1 and acts to inhibit glycolysis
41
What enzyme in TCA does rat poison affect>
Aconitase
42
How does Rotenone work?
Inhibits Complex I of ETC by preventing electron transfer from Fe-S centers to CoQ
43
How can Rotenone be overcome?
Vitamin K3 -> allows electrons to bypass site of rotenone blockade
44
How does cyanide poisoning affect ETC?
CN binds to Fe3+ of cyt-a3 component of complex IV and prevents O2 reduction
45
CO acts as what type of inhibitor?
Competitive inhibitor (raises Km)
46
How does an aspirin overdose affect ETC?
At increased levels, salicylate uncoupled Ox-Phos by disrupting the proton gradient across inner mito membrane and causes dissipation of heat - This also stimulates respiratory center in the brain and causes hyperventilation
47
What happens if you dont have aldolase B?
Fructose and fuctose-1-P accumulate in the liver
48
Explain how sorbitol can lead to cataracts
Sorbitol freely crosses the lens and retinal, where sorbitol dehydrogenase is unable to act, so sorbitol accumulates which draws in water and puts pressure on the eye