Distal Lateral Subungual Onychomycosis Owing to Tritirachium oryzae

A Bystander or Invader?

Hari Pankaj Vanam, P. Narsimha Rao, Kalyani Mohanram, Prakash Peralam Yegneswaran, Shiva Prakash Mandya Rudramurthy

Research output: Contribution to journalArticle

Abstract

The genus Tritirachium is a mitosporic fungus which inhabits in soil and decaying plant material and also a notable insect pathogen. Human infections with Tritirachium species though rare were previously reported to cause corneal ulcers, otomycosis, onychomycosis, and dermatomycosis of the scalp and hence may be considered as a potential pathogen. Here we report a case of distal lateral subungual onychomycosis involving right great toenail in a 22-year-old female, wherein direct potassium hydroxide preparations, fungal cultures, and molecular sequencing of the isolate established Tritirachium oryzae as the etiological agent. Antifungal susceptibility performed by the microbroth technique of CLSI revealed increased MICs to amphotericin B and low MICs to azoles and echinocandins. The case was managed with surgical nail avulsion followed by topical application of 2% ketoconazole cream resulting regrowth of normal nail. To the best of our knowledge, this is the first report of non-dermatophytic mold T. oryzae causing onychomycosis in India.

Original languageEnglish
Pages (from-to)459-463
Number of pages5
JournalMycopathologia
Volume183
Issue number2
DOIs
Publication statusPublished - 01-04-2018

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Tritirachium
Onychomycosis
Oryza
Nails
Otomycosis
Dermatomycoses
Mitosporic Fungi
Echinocandins
Corneal Ulcer
potassium hydroxide
azoles
Azoles
ketoconazole
Deuteromycotina
dermatomycoses
entomopathogens
Ketoconazole
amphotericin B
etiological agents
topical application

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Applied Microbiology and Biotechnology
  • Agronomy and Crop Science
  • veterinary (miscalleneous)
  • Plant Science

Cite this

Vanam, Hari Pankaj ; Rao, P. Narsimha ; Mohanram, Kalyani ; Yegneswaran, Prakash Peralam ; Rudramurthy, Shiva Prakash Mandya. / Distal Lateral Subungual Onychomycosis Owing to Tritirachium oryzae : A Bystander or Invader?. In: Mycopathologia. 2018 ; Vol. 183, No. 2. pp. 459-463.
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Distal Lateral Subungual Onychomycosis Owing to Tritirachium oryzae : A Bystander or Invader? / Vanam, Hari Pankaj; Rao, P. Narsimha; Mohanram, Kalyani; Yegneswaran, Prakash Peralam; Rudramurthy, Shiva Prakash Mandya.

In: Mycopathologia, Vol. 183, No. 2, 01.04.2018, p. 459-463.

Research output: Contribution to journalArticle

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