Dermatophytosis pathophysiology: Difference between revisions
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__NOTOC__ | __NOTOC__ | ||
{{Dermatophytosis}} | {{Dermatophytosis}} | ||
{{CMG}};{{AE}}{{HK}} | |||
==Overview== | |||
==Pathophysiology== | |||
===Pathogenesis== | |||
*Dermatophytes survive on the outer layer of skin called stratum corneum. | |||
*Stratum corneum has been known to be not only source of nutrition for the dermatophytes, but also the growing fungal mycelia.<ref name="pmid16599028">{{cite journal |vauthors=Samdani AJ |title=Dermatophyte growth and degradation of human stratum corneum in vitro (pathogenesis of dermatophytosis) |journal=J Ayub Med Coll Abbottabad |volume=17 |issue=4 |pages=19–21 |year=2005 |pmid=16599028 |doi= |url=}}</ref> | |||
*After the inoculation in the host skin, suitable conditions favor the infection to progress through the following stages: | |||
====Adherence==== | |||
*Dermatophyte-secreted proteases not only are mediate adherence to the host skin but also help in germination of arthroconidia and hyphal growth leading to growth of the fungi in multiple directions.<ref name="pmid8348716">{{cite journal |vauthors=Aljabre SH, Richardson MD, Scott EM, Rashid A, Shankland GS |title=Adherence of arthroconidia and germlings of anthropophilic and zoophilic varieties of Trichophyton mentagrophytes to human corneocytes as an early event in the pathogenesis of dermatophytosis |journal=Clin. Exp. Dermatol. |volume=18 |issue=3 |pages=231–5 |year=1993 |pmid=8348716 |doi= |url=}}</ref><ref name="pmid18478361">{{cite journal |vauthors=Vermout S, Tabart J, Baldo A, Mathy A, Losson B, Mignon B |title=Pathogenesis of dermatophytosis |journal=Mycopathologia |volume=166 |issue=5-6 |pages=267–75 |year=2008 |pmid=18478361 |doi=10.1007/s11046-008-9104-5 |url=}}</ref> | |||
*Fungal arthroconidia attach to keratinocytes via long and sparse microprojections (fibrils).<ref name="pmid18478361">{{cite journal |vauthors=Vermout S, Tabart J, Baldo A, Mathy A, Losson B, Mignon B |title=Pathogenesis of dermatophytosis |journal=Mycopathologia |volume=166 |issue=5-6 |pages=267–75 |year=2008 |pmid=18478361 |doi=10.1007/s11046-008-9104-5 |url=}}</ref> | |||
====Penetration==== | |||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
Revision as of 13:27, 22 June 2017
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Syed Hassan A. Kazmi BSc, MD [2]
Overview
Pathophysiology
=Pathogenesis
- Dermatophytes survive on the outer layer of skin called stratum corneum.
- Stratum corneum has been known to be not only source of nutrition for the dermatophytes, but also the growing fungal mycelia.[1]
- After the inoculation in the host skin, suitable conditions favor the infection to progress through the following stages:
Adherence
- Dermatophyte-secreted proteases not only are mediate adherence to the host skin but also help in germination of arthroconidia and hyphal growth leading to growth of the fungi in multiple directions.[2][3]
- Fungal arthroconidia attach to keratinocytes via long and sparse microprojections (fibrils).[3]
Penetration
References
- ↑ Samdani AJ (2005). "Dermatophyte growth and degradation of human stratum corneum in vitro (pathogenesis of dermatophytosis)". J Ayub Med Coll Abbottabad. 17 (4): 19–21. PMID 16599028.
- ↑ Aljabre SH, Richardson MD, Scott EM, Rashid A, Shankland GS (1993). "Adherence of arthroconidia and germlings of anthropophilic and zoophilic varieties of Trichophyton mentagrophytes to human corneocytes as an early event in the pathogenesis of dermatophytosis". Clin. Exp. Dermatol. 18 (3): 231–5. PMID 8348716.
- ↑ 3.0 3.1 Vermout S, Tabart J, Baldo A, Mathy A, Losson B, Mignon B (2008). "Pathogenesis of dermatophytosis". Mycopathologia. 166 (5–6): 267–75. doi:10.1007/s11046-008-9104-5. PMID 18478361.