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Zhang TY, Yu Y, Zhang MY, Cheng J, Chen ZJ, Zhang JY, Zhang YX. Verruconis panacis sp. nov., an endophyte isolated from Panax notoginseng. Int J Syst Evol Microbiol 2018; 68:2499-2503. [PMID: 29923818 DOI: 10.1099/ijsem.0.002862] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An endophytic strain (designated as strain SYPF 8337T) was isolated from the root of 3-year-old Panax notoginseng in Yunnan province of China. Strain SYPF 8337T grew slowly and formed pale brown to brown colonies. Phylogenetic analyses indicated that strain SYPF 8337T was placed in the Verruconis clade. Different from other Verruconis species, strain SYPF 8337T produced four-cell conidia. Furthermore, strain SYPF 8337T is the first fungus isolated as an endophyte of P. notoginseng in the genus Verruconis. Combined with the morphology and molecular analyses, a new species named Verruconis panacis sp. nov. is proposed.
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Affiliation(s)
- Tian-Yuan Zhang
- 1School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Ying Yu
- 1School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Meng-Yue Zhang
- 1School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Juan Cheng
- 1School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Zhong-Jian Chen
- 2Wenshan Sanqi Research Institute, Wenshan University, Wenshan 663000, PR China
| | - Jin-Yu Zhang
- 3Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming 650200, PR China
| | - Yi-Xuan Zhang
- 1School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, PR China
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Bentley RT, Taylor AR, Thomovsky SA. Fungal Infections of the Central Nervous System in Small Animals: Clinical Features, Diagnosis, and Management. Vet Clin North Am Small Anim Pract 2017; 48:63-83. [PMID: 28988704 DOI: 10.1016/j.cvsm.2017.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Small animal mycoses vary geographically. Different clinical presentations are seen in animals with infection of the central nervous system (CNS), including multifocal meningoencephalomyelitis, intracranial lesions that accompany sinonasal lesions, rapidly progressive ventriculitis, or solitary granuloma of the brain or spinal cord. Systemic, nasal, or extraneural clinical signs are common but, especially in granuloma cases, do not always occur. Surgery may have a diagnostic and therapeutic role in CNS granuloma. There have been recent advancements in serology. Fluconazole, voriconazole, and posaconazole cross the blood-brain barrier, but voriconazole is neurotoxic to cats. Liposomal and lipid-encapsulated formulations of amphotericin B are preferred.
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Affiliation(s)
- R Timothy Bentley
- Neurology and Neurosurgery, Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, Purdue University, Lynn Hall, 625 Harrison Street, West Lafayette, IN 47907, USA.
| | - Amanda R Taylor
- Neurology and Neurosurgery, Department of Clinical Sciences, Auburn University College of Veterinary Medicine, Auburn University, Greene Hall, 1130 Wire Road, Auburn, AL 36849, USA
| | - Stephanie A Thomovsky
- Neurology and Neurosurgery, Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, Purdue University, Lynn Hall, 625 Harrison Street, West Lafayette, IN 47907, USA
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Russell EB, Gunew MN, Dennis MM, Halliday CL. Cerebral pyogranulomatous encephalitis caused by Cladophialophora bantiana in a 15-week-old domestic shorthair kitten. JFMS Open Rep 2016; 2:2055116916677935. [PMID: 28491444 PMCID: PMC5359796 DOI: 10.1177/2055116916677935] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2016] [Indexed: 11/29/2022] Open
Abstract
Case summary A case of cerebral phaeohyphomycosis caused by Cladophialophora bantiana is described in a 15-week-old domestic shorthair kitten. Relevance and novel information Cerebral phaeohyphomycosis is a rare condition in cats caused by dematiaceous fungi. This report describes the clinical and histopathological findings in the youngest case documented in a feline, provides a brief review of aetiology, diagnosis, treatment and prognosis of cerebral phaeohyphomycosis and demonstrates the importance of molecular diagnostics in accurate mycotic species identification.
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Affiliation(s)
| | | | - Michelle M Dennis
- QML Vetnostics, Brisbane, Australia and Department of Biomedical Sciences, Ross University School of Veterinary Medicine, Basseterre, St Kitts
| | - Catriona L Halliday
- Clinical Mycology Reference Laboratory, Centre for Infectious Diseases and Microbiology, ICPMR - Pathology West, Westmead Hospital, Sydney, Australia
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Occurrence of Ochroconis and Verruconis species in clinical specimens from the United States. J Clin Microbiol 2014; 52:4189-201. [PMID: 25232157 DOI: 10.1128/jcm.02027-14] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Ochroconis is a dematiaceous fungus able to infect immunocompetent people. Recently, the taxonomy of the genus has been reevaluated, and the most relevant species, Ochroconis gallopava, was transferred to the new genus Verruconis. Due to the important clinical implications of these fungi and based on the recent classification, it was of interest to know the spectra of Ochroconis and Verruconis species in clinical samples received in a reference laboratory in the United States. A set of 51 isolates was identified morphologically and molecularly based on sequence analyses of the nuclear ribosomal RNA (nrRNA), actin, and β-tubulin genes. Verruconis gallopava was the most common species (68.6%), followed by Ochroconis mirabilis (21.5%). One isolate of Ochroconis cordanae was found, being reported for the first time in a clinical setting. The most common anatomical site of isolation was the lower respiratory tract (58.8%), followed by superficial and deep tissues at similar frequencies (21.6 and 19.6%, respectively). Interestingly, three new species were found, which are Ochroconis olivacea and Ochroconis ramosa from clinical specimens and Ochroconis icarus of an environmental origin. The in vitro antifungal susceptibilities of eight antifungal drugs against the Ochroconis isolates revealed that terbinafine and micafungin were the most active drugs.
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Antifungal susceptibility patterns of opportunistic fungi in the genera Verruconis and Ochroconis. Antimicrob Agents Chemother 2014; 58:3285-92. [PMID: 24687495 DOI: 10.1128/aac.00002-14] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Species of Verruconis and species of Ochroconis are dematiaceous fungi generally found in the environment but having the ability to infect humans, dogs, cats, poultry, and fish. This study presents the antifungal susceptibility patterns of these fungi at the species level. Forty strains originating from clinical and environmental sources were phylogenetically identified at the species level by using sequences of the ribosomal DNA internal transcribed spacer (rDNA ITS). In vitro antifungal susceptibility testing was performed against eight antifungals, using the Clinical and Laboratory Standards Institute (CLSI) broth microdilution method. The geometric mean MICs for amphotericin B (AMB), flucytosine (5FC), fluconazole (FLC), itraconazole (ITC), voriconazole (VRC), and posaconazole (POS) and minimum effective concentrations (MECs) for caspofungin (CAS) and anidulafungin (AFG) across the Ochroconis and Verruconis species were as follows, in increasing order. For Verruconis species, the values (μg/ml) were as follows: AFG, 0.04; POS, 0.25; ITC, 0.37; AMB, 0.50; CAS, 0.65; VRC, 0.96; 5FC, 10.45; and FLC, 47.25. For Ochroconis species, the values (μg/ml) were as follows: AFG, 0.06; POS, 0.11; CAS, 0.67; VRC, 2.76; ITC, 3.94; AMB, 5.68; 5FC, 34.48; and FLC, 61.33. Antifungal susceptibility of Ochroconis and Verruconis was linked with phylogenetic distance and thermotolerance. Echinocandins and POS showed the greatest in vitro activity, providing possible treatment options for Ochroconis and Verruconis infections.
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Samerpitak K, Van der Linde E, Choi HJ, Gerrits van den Ende AHG, Machouart M, Gueidan C, de Hoog GS. Taxonomy of Ochroconis, genus including opportunistic pathogens on humans and animals. FUNGAL DIVERS 2013. [DOI: 10.1007/s13225-013-0253-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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A multigene phylogeny reveals that Ochroconis belongs to the family Sympoventuriaceae (Venturiales, Dothideomycetes). FUNGAL DIVERS 2013. [DOI: 10.1007/s13225-013-0252-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Emerging fungal diseases due to black yeasts and relatives in domestic or wild animals and in invertebrates or cold- and warm-blooded vertebrates are continually being reported, either as novel pathogens or as familiar pathogens affecting new species of hosts. Different epidemiological situations can be distinguished, i.e., occurrence as single infections or as zoonoses, and infection may occur sporadically in otherwise healthy hosts. Such infections are found mostly in mammals but also in cold-blooded animals, are frequently subcutaneous or cerebral, and bear much similarity to human primary disorders. Infections of the nervous system are mostly fatal, and the source and route of infection are currently unknown. A third epidemiological situation corresponds to pseudoepidemics, i.e., infection of a large host population due to a common source. It is often observed and generally hypothesized that the susceptible animals are under stress, e.g., due to poor housing conditions of mammals or to a change of basins in the case of fishes. The descriptions in this article represent an overview of the more commonly reported and recurring black fungi and the corresponding diseases in different types of animals.
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Abstract
PRACTICAL RELEVANCE Lower respiratory tract infections (LRTIs) in cats can be due to bacteria, parasites, fungi and viruses. This review details the practical investigation of these infections and highlights specific therapy where possible. The aim is to avoid the all-too-frequent temptation in practice to treat cats with lower respiratory tract signs empirically for feline bronchial disease (FBD)/asthma. This is potentially hazardous as immunosuppressive therapy for FBD/asthma could exacerbate disease due to a LRTI. Empirical treatment of suspected LRTI is also difficult to recommend given the wide range of potential pathogens. CLINICAL CHALLENGES Making a clinical ante-mortem diagnosis of LRTI in a cat can be challenging. Consistent historical, clinical, haematological and radiographic abnormalities are often lacking and findings may be non-specific. Astute clinical acumen, thorough investigation and high quality laboratory analysis are usually required for a diagnosis. Bronchoalveolar lavage, if feasible, and tests for lungworm should be routine in cats with lower respiratory tract signs. Lung fine needle aspiration may be useful in cases of diffuse or nodular pulmonary disease. Histopathology is rarely employed in ante-mortem investigations. EVIDENCE BASE The authors have reviewed a substantial body of literature to provide information on many of the reported bacterial, parasitic, fungal and viral pathogens, including some that occur in Asia. Attention has been given to specific therapy for each pathogen, with evidence-based comments when there is a deviation from routine recommendations.
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Affiliation(s)
- Susan F Foster
- Vetnostics, 60 Waterloo Rd, North Ryde, NSW 2060, Australia.
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Wong J, Schousboe M, Metcalf S, Endre Z, Hegarty J, Maze M, Keith E, Seaward L, Podmore R. Ochroconis gallopava peritonitis in a cardiac transplant patient on continuous ambulatory peritoneal dialysis. Transpl Infect Dis 2010; 12:455-8. [DOI: 10.1111/j.1399-3062.2010.00523.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yarita K, Sano A, Murata Y, Takayama A, Takahashi Y, Takahashi H, Yaguchi T, Ohori A, Kamei K, Miyaji M, Nishimura K. Pathogenicity of Ochroconis gallopava isolated from hot springs in Japan and a review of published reports. Mycopathologia 2007; 164:135-47. [PMID: 17594533 DOI: 10.1007/s11046-007-9034-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2007] [Accepted: 06/05/2007] [Indexed: 11/25/2022]
Abstract
Four strains of Ochroconis gallopava from 3 out of 15 Japanese hot springs were isolated. Colonies of the hot spring isolates were uniformly floccose and dark olive green on the surface and dark brown on their reverse side on potato dextrose agar (PDA) plates, however, they became felty, flat, and brownish-black, and produced a reddish-brown pigment after several times of subculture at room temperature. Shapes and sizes of conidia of the four strains were individual, while the D1/D2 domain of the large subunit ribosomal RNA gene sequences showed 99.7% identity in the GenBank database. The DNA pattern of the hot spring isolates amplified by species specific loop mediated isothermal amplification method were as the same pattern as that of a clinical isolate. The minimum inhibitory concentrations of antifungal agents to O. gallopava isolated from the hot springs were ranged from 0.5 to 1 microg/ml in amphotericin B, 1 to 16 microg/ml in flucytosine, 0.125 to 0.25 microg/ml in itraconazole, 1 to 4 microg/ml in miconazole, 16 to 64 microg/ml in flconazole and 0.03 to 0.5 microg/ml in micafungin. The isolates had fatal outcome in experimentally infected mice intravenously with severe invasiveness to brains and kidneys. These findings suggested that O. gallopava habitats in hot springs could be one of sources for infection.
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Affiliation(s)
- Kyoko Yarita
- Research Center for Pathogenic Fungi and Microbial Toxicoses, Chiba University, 1-8-1, Inohana, Chuo-ku, Japan
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Singh K, Flood J, Welsh RD, Wyckoff JH, Snider TA, Sutton DA. Fatal systemic phaeohyphomycosis caused by Ochroconis gallopavum in a dog (Canis familaris). Vet Pathol 2007; 43:988-92. [PMID: 17099156 DOI: 10.1354/vp.43-6-988] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A 5-year-old Shetland Sheepdog was presented with a history of weakness, ataxia, anemia, thrombocytopenia, and occasional seizures. The dog had been treated for 6 months with prednisone for inflammatory bowel disease. A positive titer for Ehrlichia canis was detected 6 months before referral. The initial physical examination revealed a weak, laterally recumbent dog with pale mucous membranes. Neurologic examination revealed multiple neurologic deficits. A complete blood cell count (CBC) revealed normochromic, normocytic, nonregenerative anemia; lymphopenia; thrombocytopenia; and neutrophilic and monocytic leukocytosis. Urinalysis revealed proteinuria, with a specific gravity of 1.045. The dog was unresponsive to treatment and died. At necropsy, there was severe serofibrinous peritonitis and pleuritis, with randomly scattered dark brown necrotic foci present in multiple organs, including liver, spleen, kidney, and pancreatic lymph node. Histologically, there were extensive regions of parenchymal necrosis surrounded by neutrophils admixed with epithelioid macrophages, lymphocytes, and pigmented fungal organisms. Numerous brown, 2 to 6 microm in diameter, septate, branching hyphae, subsequently identified as Ochroconis gallopavum (formerly Dactylaria constricta var. gallopava), were observed.
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Affiliation(s)
- K Singh
- Department of Veterinary Pathobiology, McElroy Hall 250, Oklahoma State University, Stillwater, Oklahoma 74078-2007, USA.
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Elies L, Balandraud V, Boulouha L, Crespeau F, Guillot J. Fatal systemic phaeohyphomycosis in a cat due to Cladophialophora bantiana. JOURNAL OF VETERINARY MEDICINE. A, PHYSIOLOGY, PATHOLOGY, CLINICAL MEDICINE 2003; 50:50-3. [PMID: 12650510 DOI: 10.1046/j.1439-0442.2003.00501.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We report a case of fatal systemic mycosis in a 9-year-old cat. Diagnosis of phaeohyphomycosis was made by histology. Morphological and molecular identification of the fungus isolated from the lesions yielded the species Cladophialophora bantiana. This species is well known to be a neurotropic fungus causing cerebral pyogranulomatous lesions in humans. In this case, the lesions were widespread, distributed without the involvement of central nervous system. The origin of systemic manifestation is still unknown and no evidence of immunosuppression was found. It is the first feline case of C. bantiana infection reported in Europe.
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Affiliation(s)
- L Elies
- UP d'Histologie et d'Anatomie Pathologique, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France.
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Abstract
A 10-year-old male domestic shorthaired cat had a chronic, slowly enlarging subcutaneous mass on the right side of its nose. At the time of presentation, the nasal airflow was severely impeded on the affected side. The cat had been treated medically with various drugs. Oral itraconazole had been the most effective in reducing the size of the mass, but had caused hepatotoxicity and had to be withdrawn. The mass was finally removed surgically, and a diagnosis of granulomatous cellulitis caused by Alternaria alternata (phaeohyphomycosis) was established, based on histopathology and fungal isolation. There has been no recurrence of the lesion after 21 months and the cat remains clinically well at the time of writing. Subcutaneous phaeohyphomycosis caused by A alternata has not, to the authors' knowledge, been previously described in small domestic animals in the UK.
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Affiliation(s)
- J S McKay
- Department of Veterinary Pathology, University of Liverpool
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Kralovic SM, Rhodes JC. Phaeohyphomycosis caused by Dactylaria (human dactylariosis): report of a case with review of the literature. J Infect 1995; 31:107-13. [PMID: 8666840 DOI: 10.1016/s0163-4453(95)92060-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Phaeohyphomycosis due to Dactylaria (Ochroconis) spp. is a rare infection of man. It was first reported in 1986. All patients have had significant immunosuppression. To our knowledge, this is the second case of phaeohyphomycosis caused by Dactylaria constricta var. gallopava in a liver transplant patient and it developed even though he had been receiving fungal prophylaxis with fluconazole. Moreover, this case may represent nosocomial acquisition. In addition, we have reviewed the English language literature of previously reported patients with phaeohyphomycosis caused by Dactylaria spp.
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Affiliation(s)
- S M Kralovic
- Department of Internal Medicine, University of Cincinnati College of Medicine, Ohio, USA
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