An ultrastructural study of Trichophyton rubrum induced onychomycosis

NewsBot · Jun 14, 2016

Members do not see these Ads. Sign Up.
An ultrastructural study of Trichophyton rubrum induced onychomycosis.
Yue X et al
BMC Infect Dis. 2015 Nov 17;15:532. doi: 10.1186/s12879-015-1240-1.

BACKGROUND:
Trichophyton rubrum (T.rubrum) caused onychomycosis is the most common nail fungal disease. The common diagnostic methods are direct microscopic examination and fungal culture. In this study we used scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to study the subungual ultrastructural changes in T. rubrum induced onychomycosis.
METHODS:
Six outpatients with onychomycosis were recruited and T.rubrum infection was confirmed by fungal culture. Six toenail samples were collected and prepared for SEM characterization. The cultured fugal colonies were prepared for SEM and TEM characterization.
RESULTS:
1) SEM showed significant structural damages and the formation of a thin layer or a single layer of keratinocytes in all infected nail plates. Hyphae (piercing or penetrating keratinocytes layers), arthrospores and local bacterial aggregation were observed on the ventral surface of the nail plates. 2) SEM of the cultured fungal colony showed relatively straight, highly branched hyphae and microconidias; TEM showed branching hyphae that were composed of double-layer cell walls. Hyphae had nucleus, mitochondria, liposomes, lysosomes, scattered rough endoplasmic reticulum, myeloid bodies and aggregated ribosomes. There were high-density particles outside the hyphae.
CONCLUSION:
SEM showed a large number of hyphae penetrated the keratinocytes layer, suggesting that T. rubrum can cause severe damage to the stratum corneum. TEM showed the ultrastructural features of T. rubrum-induced infection before treatment.
Click to expand...

NewsBot The Admin that posts the news.

Exam Topics Free Essentials: How to Navigate Your Study Material

A Finite Element Study of Different Shoe Soles

Pilot Study Quantifies Proprioceptive Insole

Studying the ostrich's foot to help design running shoes

TREADON study in plantar heel pain

International student studying podiatry

Case Study advice - What has gone wrong?

Share This Page