ArticleJournal of clinical and diagnostic research : JCDR2015
Corynebacterium amycolatum: An Unexpected Pathogen in the Ear.
Article in Journal of clinical and diagnostic research : JCDR, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Infectious Spondylodiscitis of Bacterial Causes in Adults: Epidemiology, Pathophysiology, Diagnostic and Treatment Challenges.Microorganisms · 2026Review
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- Bullous Myringitis in an Adult With Chronic Noise Exposure.Journal of community hospital internal medicine perspectives · 2025Article
- Environmental factors and particle size shape the community structure of airborne total and pathogenic bacteria in a university campus.Frontiers in public health · 2024Article
- Licorice processing involving functions of Evodiae Fructus on liver inflammation and oxidative stress are associated with intestinal mucosal microbiota.Frontiers in microbiology · 2024Article
- Corynebacterium bovis surgical site infection and brain abscess: The first case report and literature review.IDCases · 2023Article
- Microbiome Profile of Dogs with Stage IV Multicentric Lymphoma: A Pilot Study.Veterinary sciences · 2022Article
- In vitro Studies of Non-DiphtheriaeInfection and drug resistance · 2022Article
- Pan-genomic analysis ofFrontiers in microbiology · 2022Article
- Article
- Insight into the intestinal microbiome of farrowing sows following the administration of garlic (Allium sativum) extract and probiotic bacteria cultures under farming conditions.BMC veterinary research · 2020Article
- Unveiling a Rarity: First Instance of Urinary Tract Infection Caused byCase reports in nephrology and dialysisArticle
- Mycobacterial panniculitis caused byJFMS open reportsArticle
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Authors and funding
4 authors.
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Abstract
Non-diphtheritic Corynebacteria are now being increasingly recognised as the causative agents of various infections. Among these organisms, Corynebacterium amycolatum is the most frequently isolated one. It has been isolated from urine, pus, catheter tips, blood, prostatic secretion, cerebrospinal fluid and sputum. However, to the best of our knowledge, there are no reports on its role in ear infections. Here, we present 12 cases of ear infection with C.amycolatum. A high index of suspicion is necessary for identification of these gram positive bacilli as they resemble other Corynebacterium species on gram stain. They have metachromatic granules which can be demonstrated by Albert's stain and form characteristic dry, flat colonies on blood agar. These organisms are frequently resistant to ceftriaxone and imipenem. In our study, among the 12 isolates, eight isolates were resistant to ceftriaxone and four to imipenem and two were intermediately susceptible to ceftriaxone although all the 12 strains were uniformly susceptible to vancomycin. All the isolates were negative for toxA and toxB genes by PCR. Genomic sequencing of two isolates confirmed them as C.amycolatum. C.amycolatum is a relatively rare cause of pyogenic ear infections. As it demonstrates more antibiotic resistance than other similar organisms, careful identification with antibiotic susceptibility testing is required in managing these infections.
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