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===Physiology===
===Physiology===
The normal physiology of skin barrier function and immune regulation can be understood as follows:
The normal physiology of skin barrier function and immune regulation can be understood as follows:
*Skin Barrier: In the epidermis, stratum corneum consisting of stacks of anucleate corneocytes filled with keratin filaments serves as the first line of defense between the body and the environment.<ref name="pmid25131691">{{cite journal |vauthors=Elias PM, Wakefield JS |title=Mechanisms of abnormal lamellar body secretion and the dysfunctional skin barrier in patients with atopic dermatitis |journal=J. Allergy Clin. Immunol. |volume=134 |issue=4 |pages=781–791.e1 |date=October 2014 |pmid=25131691 |pmc=4186911 |doi=10.1016/j.jaci.2014.05.048 |url=}}</ref> Interactions between keratinocytes and structural proteins such as lipids, regulatary enzymes and filaggrin, determine the permiability of epidermis.  
*Skin Barrier: In the epidermis, stratum corneum consisting of stacks of anucleate corneocytes filled with keratin filaments serves as the first line of defense between the body and the environment.<ref name="pmid25131691">{{cite journal |vauthors=Elias PM, Wakefield JS |title=Mechanisms of abnormal lamellar body secretion and the dysfunctional skin barrier in patients with atopic dermatitis |journal=J. Allergy Clin. Immunol. |volume=134 |issue=4 |pages=781–791.e1 |date=October 2014 |pmid=25131691 |pmc=4186911 |doi=10.1016/j.jaci.2014.05.048 |url=}}</ref> Interactions between terminal differentiated keratinocytes and structural proteins such as lipids, regulatory enzymes and filaggrin, determine the permeability of epidermis.  


===Pathogenesis===
===Pathogenesis===

Revision as of 15:46, 27 September 2018


Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Shalinder Singh, M.B.B.S.[2]

Overview

It is thought that Atopic dermatitis is caused by either skin barrier dysfunction or immune dysregulation.


Pathophysiology

Physiology

The normal physiology of skin barrier function and immune regulation can be understood as follows:

  • Skin Barrier: In the epidermis, stratum corneum consisting of stacks of anucleate corneocytes filled with keratin filaments serves as the first line of defense between the body and the environment.[1] Interactions between terminal differentiated keratinocytes and structural proteins such as lipids, regulatory enzymes and filaggrin, determine the permeability of epidermis.

Pathogenesis

  • The exact pathogenesis of [disease name] is not completely understood.

OR

  • It is understood that [disease name] is the result of / is mediated by / is produced by / is caused by either [hypothesis 1], [hypothesis 2], or [hypothesis 3].
  • [Pathogen name] is usually transmitted via the [transmission route] route to the human host.
  • Following transmission/ingestion, the [pathogen] uses the [entry site] to invade the [cell name] cell.
  • [Disease or malignancy name] arises from [cell name]s, which are [cell type] cells that are normally involved in [function of cells].
  • The progression to [disease name] usually involves the [molecular pathway].
  • The pathophysiology of [disease/malignancy] depends on the histological subtype.

Genetics

[Disease name] is transmitted in [mode of genetic transmission] pattern.

OR

Genes involved in the pathogenesis of [disease name] include:

  • [Gene1]
  • [Gene2]
  • [Gene3]

OR

The development of [disease name] is the result of multiple genetic mutations such as:

  • [Mutation 1]
  • [Mutation 2]
  • [Mutation 3]

Associated Conditions

Conditions associated with [disease name] include:

  • [Condition 1]
  • [Condition 2]
  • [Condition 3]

Gross Pathology

On gross pathology, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].

Microscopic Pathology

On microscopic histopathological analysis, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].

References

  1. Elias PM, Wakefield JS (October 2014). "Mechanisms of abnormal lamellar body secretion and the dysfunctional skin barrier in patients with atopic dermatitis". J. Allergy Clin. Immunol. 134 (4): 781–791.e1. doi:10.1016/j.jaci.2014.05.048. PMC 4186911. PMID 25131691.

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