Pathology if inflammation.causes, manifestation, types Flashcards

1
Q

definition of inflammation

A

complec local mesenchymal and vascular reaction of living tissue on different types of damage

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2
Q

systemic manifesarions of local inflammation

A

nausea, ^temp, headache, fatigue, enlarged LN, leukocytosis

long lasting chriniz–>AA amyloidosis

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3
Q

SIRS-systemic inflammatory response syndrome

A

pathogenesis of sepsis

leads to MODS

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4
Q

physiological role of inflammation

A
  1. eliminate cause of inflammation and minimize tissue dmaage
  2. stop spreading of the cause of inflammation (surrond it)
  3. activate processes of regeneration and repair(healing
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5
Q

pathological role of inflammation

A

excessive or long lastin reaction leading to tissue damage

role in pathogenesis of many diseases

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6
Q

factors determining inflammatory responese

A
  1. features of pathogen
  2. response of host organism
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7
Q

feature of pathogenbi

A
  1. type and mechanism of tissue
  2. virulence
  3. infectious dose
  4. portal of entrance
  5. products of pathigen
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8
Q

response of host organism

A
  1. systemic disaese (dm, Chronic renal insufficency-CHRI, cirrhosis, alcholism, BM failure)
  2. tumors
  3. function status of IS-psecific and nonspeficific
  4. type and localization of damaged tissye
  5. local host factors
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9
Q

components of inflamamtion

A

1 cellualr
2. humoral

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10
Q

cellular compinent of inflammation

A
  • neutrophils
    -eosinophils
  • monocytes/macrophagesa dn tissue macrophages (histiocytes)
  • lymphocytes and plasma cells
  • mast cells
    -thromocytes
    -endothelial cells
    -fibroblast/fibrocytes
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11
Q

humoral component of inflammaiton

A
  1. cell derived:
    • histamine, serotonin: vasoactive
    • prostagladnins, leujotrines: arachionic acid
    • free oxy radical, nitric oxide, cytokines, neuropeptides
  2. plasma derived
    • liver
      1.components of complement
      2. factor X11 (hageman factor) : vessle dia
      3. processes of hemostasos, including blood coagualtion and fibrinolysis
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12
Q

macroscopical features of inflammaiton

A

typical for acute inflammaiton
1: Calor=Heat (^temp)
- VASODILATION AND HYPEREMIA=HIGHER BLOOD PERFUSION
- hitg metabolic rate=heat

2: Rubor=redness
- dilated vv full of blood

3: tumor=swelling
- leaking water form vv–>acc in interstitium–>inflammatory edema
- exsudate

4: dolor=pain
- inflammatory mediator stimulate nerve fibers–>pain

5: functio leasa=loss of fucntion
- tissue damaged–>not normal funciton

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13
Q

microscopical feature of inflammation types

A

alteration, exsudation, proliferation

1/2 are increased/advanced

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14
Q

signs (Features) of inflammaiton-histologically

A
  1. VASCUALR CHNAGES (sec to minutes)
  2. infiltrattion of tissue with the inflammatory cells=inflammatory infiltarte/7celluzation (hours-days)
  3. biochemical, metabolic and morphological changes in involved tissye, even in severe distant organs-liver, spleen, ln
  4. act of IS
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15
Q

What is altera5ion and what is ti caused by

A

to alter=damage
- represented by development of dystrophies and necrosis

caused by presence of microorganism, their toxins and immunopathological mechnaism: unfectionys inflammations

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16
Q

where can it be seen

A
  • microscopic-monocellular necrosis in vrial hepatitis
  • macroscopic: casefication in granulomas of TB
17
Q

examples of alteration

A
  • Viral encephalitits
  • viral heptatitis
  • deiphteric myocarditic: by corynebacterium diptheria
18
Q

what is exsudation

A

leakage of fluid, proteins, blood cells from vv to interstitium, on mucosal surfaces or into cavities (pleural, peritoneal, pericardial cavitiies)

19
Q

exsudate leakage is produced after fullfillment of which processes

A
  1. Vasodilation
    - lead to redness and increased temp
  2. increaseed vascular permeability
    - bc of mediaters or direct damage to vv wall
    - opening of gapes btw endothelial cells
  3. exsudation + leukocyte emigration
  4. vascular stasits
20
Q

what is transudate

A
  • when filtrattion of fluid is higher that reabsoprtion into vv.
  • permeability of vv is NOT CHNGES: only fluid escapes

hypostattic tissue edema due to heart failure

21
Q

what is proliferation and what does it include

A

Proliferation is the development of granulation tissue which is vascularized pink tissue with granular apperanc

includes:
- multiplication of inflamamotry cells in inflammed tissue
- prolif of vv/endothelial cells(angiogenesis)
- prolif of interstitial cells-fibroblasts
- formaiton and remodeltation of new tissue

22
Q

what is non-specific grnaulation tisuse and what is it compised of

A

-typically seen in chronic inflammaiton and healing
-responsible for healing and repair
- composed of
1. new forming vv: proliferation of ENDOTHELIAL CELLS
2. FIBROBLASTS
- make collagen and EM

23
Q

what will nonspecific granuation tissue turn into

A

collagenous, hypocellualr, hypovascular tissue; aka SCAR

by healing, scarificaiton and fibrotization

24
Q

what is specific granulation tissue

A
  • not a tissye visible in process of healing
  • NOT PROLIFERATING VV, NO VV
  • composed of:
    • histiocytes whcih get cahnged into epitheloid cells: epitheloid hitstiocytes
      -
25
Q

type of inflammation axx to time

A

peracute: days-week
acute: 1-3e
subacute: 3-6w
chronic: m-y

26
Q

tyoe of inflammaiton acc to cells

A

acute: polymorphonuclears-nucleus and macrophages

chronic: lymphocytes, plasma, macro, fibrobalst

27
Q

if we have allergic /parasitic etiology we can se

A

macro and eosinophils

28
Q

if we have viral etiology

A

lymohocytes

29
Q

what are liable cells

A

cells able to regenerate,

30
Q

what is stabile cells or permanent cells

A

no ability to proliferate (musclem nervoys tissue)
- striated, cardiac muscle and most smooth muscle(not uterus)
- damage fixed only by repair–>non-specific grnaulation tissye–>fibrous scar

31
Q

what is exacerbation

A

where acute inflammation may be reactivated, chronic–>acute