Lipid Mobilization and Catabolism Flashcards

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1
Q

Fabry symptoms

A
  1. Burning sensations in the hand
  2. Small, raised reddish-purple blemishes on the skin (angiokeratomas)
  3. Cloudiness of the cornea
  4. Impaired areterial circulation and increased risk of HT or stroke
  5. Enlargment of kidneys and heart
  6. Renal failure (cause of death)
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2
Q

What accumulates in Fabry

A

Ceramide trihexoside

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3
Q

Fabry Disease is due to a mutation of what ezyme

A

Lysosomal a-galactosidase

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4
Q

Tay-Sachs symptoms

A
  1. Cherry red spots in macula
  2. Blindness
  3. Psychomotor retardation
  4. Death under 2 years
  5. Startle reflex
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5
Q

What hydrolyzes TG

A

Hormone-sensitive triacylglycerol lipase

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6
Q

Niemann-Pick symptoms

A
  1. Hepatosplenomegaly
  2. Microcephaly with sever mental retardation
  3. Zebra bodies in inclusions
  4. Foamy macrophages
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7
Q

Gaucher lysosomal enzyme missing

A

Glucocerebrosidase

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8
Q

Niemann-Pick accumulates

A

Sphinomyelin

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9
Q

Fabry disease genetics

A

X-linked recessive

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10
Q

What is the primary etiology of Medium chain acyl-CoA dehydrogenase (MCAD) deficiency

A

Hepatic

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11
Q

Hormone sensitive lipase converts

A

TGL to:

Glycerol

Fatty acids

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12
Q

Propionyl-CoA carboxylase converts

A

Propionyl-CoA to Methylmalonyl-CoA

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13
Q

Tay-Sachs accumulates

A

Ganglioside GM2

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14
Q

Tay-Sache lysosomal enzyme missing

A

Hexosaminidase A

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15
Q

Methylmalonyl-CoA mutase requires

A

B12

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16
Q

Niemann-Pick lysosomal enzyme missing

A

Sphingomyelinase

17
Q

Propionyl-CoA carboxylase requires

A

Biotin

18
Q

β-oxidation does what

A

Oxidizes fatty acids

19
Q

Gaucher accumulates

A

Glucocerebroside

20
Q

Gaucher symptoms

A
  1. Adult hepatosplenomegaly
  2. Erosion of bones
  3. Fractures
  4. Pancytopenia or thrombocytopenia
  5. Crumpled paper inclusions in macrophages
21
Q

What inhibits Carnitine acyltransferase-1

A

malonyl-CoA

22
Q

Methylmalonyl-CoA mutase converts

A

Methylmalonyl-CoA to Succinyl-CoA

23
Q

How are long chain fatty acids transported into the mitochondrion?

A

By carnitine shuttle (CAT)