inflammation. inflammation definition inflammation – what for?
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Inflammation
Inflammationdefinition
Inflammation – what for?
Regeneration, scarring
The inflammatory response consists of two main components:
- vascular reaction
- cellular reaction
Cells included in inflammatory reaction
Neutrophils
Macrophages
Lymphocytes
Plasma cells
Eosinophils
Inflammation –nomenclature
Inflammation is divided into:
-acute inflammation
-chronic inflammation
Acute inflammation
Acute inflammationMajor components:
Acute inflammationCauses
Acute inflammation-vascular changes
Acute inflammation
A hallmark of acute inflammation is increased vascular permeability leading to the escape of protein-rich fluid (exudate)
into the extravascular tissue. A marked outflow of fluid and its accumulation in the
interstitial tissue results in edema (inflammatory edema).
Acute inflammation – cellular reaction
Acute inflammation
Acute inflammation – phagocytosis
Acute inflammationRemember!
During phagocytosis leukocytes release microbicidal and other products
(lysosomal enzymes,prostaglandins and others) into the extracelular space. These
products are capable of causing endothelial injury and tissue damage and may thus amplify the effects of the initial
injurious agent. Thus, if persistent and unchecked, the leukocyte infiltrate itself
becomes the offender. Leukocyte-dependent tissue injury underlies many
acute and chronic human diseases.
Acute inflammation – outcomes
1.
Acute inflammation – outcomes
2.
Acute inflammation – outcomes
3.
Acute inflammation – outcomes
4.
Morphologic patterns of inflammation.
Morphologic patterns of inflammation.
1. Exudative inflammation2. Destructive inflammation3. Proliferative inflammation
Exudative inflammation
Exudative inflammationsubtypes
Serous inflammation
Serous inflammation
When serous inflammation affects mucinous membrane, the exudate is
a mixture of fluid and mucus. It is sometimes called catharrh (from
Latin word catarrhus).Example: rhinitis („running nose”).
Fibrinous inflammation
Ulcer
Purulent inflammation
Purulent inflammation –circumscribed.
Purulent inflammation – diffused
Pyorrhea – purulent superficial inflammation of mucous or serous
membrane.
Phlegmon – deep inflammation of soft tissue (eg. subcutaneous tissue).
Purulent inflammation – gangrene.
Hemorhagic inflammation
Destructive inflammation
Proliferative inflammation
Chronic inflammation
Chronic inflammation – causes
Chronic inflammation – characteristic features
Acute versus chronic inflammation
Acute versus chronic inflammation
Granulomatous inflammation 1
Granulomatous inflammation 2
Granulomatous inflammation 3
Granulomatous inflammation 4
Granulomatous inflammation 5
Granulomatous inflammationEpithelioid cell
Granulomatous inflammationLanghans-type giant cell
Granulomatous inflammationGranulomas
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