ECM Flashcards

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1
Q

Hva står GAG for?

A

Glucosaminoglycaner

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2
Q

Hva er GAG?

A

Lange kjeder av polysaccarider med repeterende sukkerenheter med neg. ladning

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3
Q

Nevn 2 GAGs

A

Hyaluron syre

Heparin

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4
Q

Hva er proteoglycan?

A

GAG kovalent bundet til protein

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5
Q

Hva kan patogene bakterier ha som gjør dem invasive?

A

Hyaluronidase; tygger opp hyaluronan

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6
Q

Hvor finner en kollagen?

A

Demineralisert bein, sener, hud, brusk, arterier mm

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7
Q

Oppbygning kollagener?

A

Trippel helix av 3 polypeptidkjeder

Glycin hver 3. posisjon.

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8
Q

Hvorfor kan elastin strekkes?

A

Kryssbindinger

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9
Q

Hva binder fibronectin (4 ting)?

A

Kollagen, heparin sulfat, hyaluronsyre og celler

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10
Q

Hva produserer fibronectin?

A

Fibroblaster

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11
Q

Nevn 2 poenger med integriner

A

Transmembrane proteiner.
Binder til celleskjelettet (indre del) og kollagen, fibronectin (ytre del)

Svake, men mange bindinger. Tillater migrasjon av cellen.

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12
Q

Annen klasse integriner?

A

Cadheriner

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13
Q

Hva mangler en med skjørbuk?

A

Vit C

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14
Q

Ehlers-Danlos syndrom?

A

Hypermobile ledd og gummihud. Abnormal kryssbinding av tropocollagen

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15
Q

Kliniske markører for bennedbrytning?

A

Deoxypyridinoline

Pyridinoline

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16
Q

Kliniske markører for benformasjon?

A

OC og ALP (alkaline fosfatase)