11: Bradykinin, neuropeptides, cytokines, and chemokines Flashcards

(64 cards)

1
Q

peptides are ___ 50 amino acids`

A
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2
Q

peptides are ___ 50 amino acids`

A
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3
Q

proteins are ____ amino acids

A

more than 50

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4
Q

gene to

A

mRNA to protein to peptide

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5
Q

what cuts out active peptide

A

proteolytic enzymes

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6
Q

what determines the amount of peptide/ protein

A

abundance of mRNA

transcriptional control + regulation of degredation

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7
Q

removes introns and some exons to produce different products

A

alternative splicing

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8
Q

amidation, glycosylation, acetylation, etc are

A

posttranslational modifications

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9
Q

4 types of pharmacological mediators

A
  1. neurotransmitters/ neuropeptides and neuroendocrine mediators
  2. hormones from nonneural sources
  3. growth factors
  4. mediators of the immune system
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10
Q

neuropeptides are often released as

A

cotransmitters along with nonpeptide NT

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11
Q

substance P and neurkinin A, CGRP, and NPY are examples of

A

neuropeptides

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12
Q

what causes neurogenic inflammation

A

neuropeptides

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13
Q

where are neuropeptides released

A

peripheral ending of nociceptive sensory neurons

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14
Q

erenumab is used for

A

is a monoclonal antibody against CGRP

used for migraines

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15
Q

bradykinin is a

A

nonneuronal hormone peptide mediator

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16
Q

where and how is bradykinin generated

A

within the plasma from protein kininogen by protease kallikrein

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17
Q

what inactivates Bk

A

ACE

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18
Q

Bk binds

A

2 GPCR = B1 and B2

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19
Q

pharmacological effects of Bk

A

vasodilation (NO and PGI2)
vascular permeability
stimulates nerve endings for pain
stimulates fluid secretion in airways and GI
contracts intestinal and uterine smooth muscle

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20
Q

Growth factors are generally large proteins

A

F- small

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21
Q

what do drugs in oncology block in growth factor signalling

A

kinase linked receptors

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22
Q

what do drugs in oncology block in growth factor signalling

A

kinase linked receptors

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23
Q

proteins are ____ amino acids

A

more than 50

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24
Q

gene to

A

mRNA to protein to peptide

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25
what cuts out active peptide
proteolytic enzymes
26
what determines the amount of peptide/ protein
abundance of mRNA | transcriptional control + regulation of degredation
27
removes introns and some exons to produce different products
alternative splicing
28
amidation, glycosylation, acetylation, etc are
posttranslational modifications
29
4 types of pharmacological mediators
1. neurotransmitters/ neuropeptides and neuroendocrine mediators 2. hormones from nonneural sources 3. growth factors 4. mediators of the immune system
30
neuropeptides are often released as
cotransmitters along with nonpeptide NT
31
substance P and neurkinin A, CGRP, and NPY are examples of
neuropeptides
32
what causes neurogenic inflammation
neuropeptides
33
where are neuropeptides released
peripheral ending of nociceptive sensory neurons
34
erenumab is used for
is a monoclonal antibody against CGRP | used for migraines
35
bradykinin is a
nonneuronal hormone peptide mediator
36
where and how is bradykinin generated
within the plasma from protein kininogen by protease kallikrein
37
what inactivates Bk
ACE
38
Bk binds
2 GPCR = B1 and B2
39
pharmacological effects of Bk
vasodilation (NO and PGI2) vascular permeability stimulates nerve endings for pain stimulates fluid secretion in airways and GI contracts intestinal and uterine smooth muscle
40
Growth factors are generally large proteins
F- small
41
GF bind mostly to
kinase linked receptors
42
what do drugs in oncology block in growth factor signalling
kinase linked receptors
43
2 examples of drugs inhibiting GF signalling
erlotinib and sunitinib
44
what protein/ polypeptide mediators are synthesized by immune cells during inflammation
cytokines
45
what do cytokines do
regulate actions of immune and inflammatory cells
46
T or F: cytokines are normally undetected in blood but become highly uprefulated during inflammation
T
47
most cytokines act on
kinase linked receptors to stimulate phosphorylation based signaling to alter gene expression
48
4 types of cytokines
interleukins chemokines interferons colony stimulating factors
49
mediators that signal between leukocytes
interleukins
50
interleukins are primarily
pro inflammatory
51
IL-4 is an
antiinflammatory interleukin
52
TNFalpha and IL-1alpha/ beta are
inflammatory interleukins
53
adalimumab is a drug that
blocks proinflammatory cytokines | monoclonal antibody against TNF alpha
54
what is adalimumab used to treat
rheumatoid arthritis, chrohn's disease
55
what type of cytokines are chemoattractants
chemokines
56
what are grouped according to key cysteine residues in peptide chains
chemokines
57
interferons interfere with
viral replication
58
IFNalpha is an
interferon used to treat chronic hep B and C | some malignant diseases
59
what interferons is used to treat relapsing MS
IFN beta
60
what is used in immunodeficiency disease to reduce infection
IFN gamma
61
colony stimulating factors are
cytokines that overlap with growth factors
62
epoietin is an
CSF used to treat anemia/ for blood doping | stimulates increase in erythropoietin
63
filgrastim is a
recombinant grandulocyte colony stimulating factor
64
what is used to treat neutropenia
filgrastim