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Article ; Online: Macrolide resistant Mycoplasma pneumoniae in Auckland, New Zealand.

Blakiston, Matthew R / Vesty, Anna / Basu, Indira

2022 Volume 55, Issue 3, Page(s) 399–400

MeSH term(s)	Humans ; Mycoplasma pneumoniae ; Macrolides/pharmacology ; Macrolides/therapeutic use ; New Zealand/epidemiology ; Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Drug Resistance, Bacterial ; Pneumonia, Mycoplasma/drug therapy ; Pneumonia, Mycoplasma/epidemiology
Chemical Substances	Macrolides ; Anti-Bacterial Agents
Language	English
Publishing date	2022-08-11
Publishing country	England
Document type	Letter
ZDB-ID	7085-3
ISSN	1465-3931 ; 0031-3025
ISSN (online)	1465-3931
ISSN	0031-3025
DOI	10.1016/j.pathol.2022.06.003
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Article ; Online: The emergence of azole resistance in Aspergillus fumigatus complex in New Zealand.

McKinney, Wendy P / Vesty, Anna / Sood, Jaideep / Bhally, Hasan / Morris, Arthur J

The New Zealand medical journal

2021 Volume 134, Issue 1536, Page(s) 41–51

Abstract: Background: Azole resistance in Aspergillus fumigatus (A. fumigatus) is increasing globally. A pan-azole-resistant isolate prompted genetic analysis of local azole-resistant isolates to determine resistance genotypes.: Methods: All A. fumigatus ... ...

Abstract	Background: Azole resistance in Aspergillus fumigatus (A. fumigatus) is increasing globally. A pan-azole-resistant isolate prompted genetic analysis of local azole-resistant isolates to determine resistance genotypes. Methods: All A. fumigatus complex isolates were tested by the broth colorimetric micro-dilution method, Sensititre® YeastOne® (SYO) (TREK Diagnostic Systems, West Sussex, England). Epidemiological cutoff values derived from the Clinical & Laboratory Standards Institute method were used to determine the proportion of non-wild-type (non-WT) isolates (ie, those with an increased likelihood to harbour acquired mechanisms of resistance). Non-WT isolates were identified by ß-tubulin gene sequencing and the genotype for azole resistance was determined. The history of the patient with the first pan-resistant isolate was reviewed along with the treatment history of patients with azole-resistant strains. Results: From January 2001 to August 2020, antifungal susceptibility testing was performed on 260 A. fumigatus complex isolates: six isolates were non-WT for one or more azole agent, two A. fumigatus sensu stricto and four other members within the species complex: two A. fischeri and two A. lentulus. There were three non-WT isolates for amphotericin B, three for itraconazole, five for posaconazole and five for voriconazole. All six non-WT strains were isolated in the past nine years (P<0.01), and four in the past three years. Azole-resistance genotyping for the A. fumigatus sensu stricto isolates detected amino acid changes at hot spots in the cyp51A gene: one at G54E and one at G138C. All six isolates were WT for caspofungin. Five of the six patients with azole-resistant strains had previous azole treatment, and the patient with the pan-azole-resistant strain had been on continuous azole treatment for 42 months preceding strain isolation. Conclusions: New Zealand can be added to the growing list of countries with azole-resistant A. fumigatus complex isolates, including pan-azole resistance in A. fumigatus sensu stricto. While uncommon and mostly found in cryptic species within the complex, azole resistance is increasing. The results provide a baseline for monitoring this emerging antifungal resistance trend in A. fumigatus in New Zealand.
MeSH term(s)	Amphotericin B/pharmacology ; Amphotericin B/therapeutic use ; Antifungal Agents/pharmacology ; Antifungal Agents/therapeutic use ; Aspergillosis/drug therapy ; Aspergillosis/microbiology ; Aspergillosis/pathology ; Aspergillus fumigatus/drug effects ; Aspergillus fumigatus/genetics ; Azoles/pharmacology ; Azoles/therapeutic use ; Drug Resistance, Fungal ; Humans ; Lung/pathology ; Male ; Microbial Sensitivity Tests ; Middle Aged ; New Zealand ; Retrospective Studies
Chemical Substances	Antifungal Agents ; Azoles ; Amphotericin B (7XU7A7DROE)
Language	English
Publishing date	2021-06-04
Publishing country	New Zealand
Document type	Journal Article
ZDB-ID	390590-1
ISSN	1175-8716 ; 0028-8446 ; 0110-7704
ISSN (online)	1175-8716
ISSN	0028-8446 ; 0110-7704
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Article ; Online: Evaluation of ssrA-targeted real time PCR for the detection of Bartonella species in human clinical samples and reflex sequencing for species-level identification.

Vesty, Anna / Henderson, Gillian / Blakiston, Matthew / Chhibber, Aakash V / Fox-Lewis, Andrew / Roberts, Sally / Basu, Indira

Pathology

2022 Volume 54, Issue 4, Page(s) 449–452

Abstract: The genus Bartonella includes species capable of causing disease in animals and humans. Due to its fastidious nature, direct detection of Bartonella causing human infection relies largely on molecular microbiological methods. Thus, it is imperative that ... ...

Abstract	The genus Bartonella includes species capable of causing disease in animals and humans. Due to its fastidious nature, direct detection of Bartonella causing human infection relies largely on molecular microbiological methods. Thus, it is imperative that diagnostic assays in use have the ability to detect a range of Bartonella species associated with human disease. In this study, we compared the performance of a real time polymerase chain reaction (PCR) assay targeting the ssrA gene to conventional rpoB-targeted PCR and sequencing for detection and differentiation of Bartonella species in human clinical samples. The real time ssrA PCR performed better for non-Bartonella henselae species, detecting B. clarridgeiae and B. quintana DNA in heart valve specimens that were not detected by rpoB PCR, and improved the sensitivity of B. henselae detection in blood specimens. Our findings suggest the real time ssrA PCR assay is suitable for detection and identification of Bartonella species in human clinical specimens.
MeSH term(s)	Animals ; Bartonella/genetics ; Bartonella Infections/diagnosis ; Bartonella Infections/microbiology ; Bartonella henselae/genetics ; DNA, Bacterial/analysis ; Humans ; Real-Time Polymerase Chain Reaction ; Reflex
Chemical Substances	DNA, Bacterial
Language	English
Publishing date	2022-02-03
Publishing country	England
Document type	Journal Article
ZDB-ID	7085-3
ISSN	1465-3931 ; 0031-3025
ISSN (online)	1465-3931
ISSN	0031-3025
DOI	10.1016/j.pathol.2021.10.014
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Article: Helicobacter cinaedi

Fox-Lewis, Andrew / Basu, Indira / Vesty, Anna / Henderson, Gillian / Chhibber, Aakash V / Thomas, Mark

IDCases

2020 Volume 21, Page(s) e00910

Abstract: Of the non- ...

Abstract	Of the non-
Keywords	covid19
Language	English
Publishing date	2020-07-11
Publishing country	Netherlands
Document type	Case Reports
ZDB-ID	2745454-X
ISSN	2214-2509
ISSN	2214-2509
DOI	10.1016/j.idcr.2020.e00910
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Article ; Online: Randomised, double-blind, placebo-controlled trial of oral probiotic Streptococcus salivarius M18 on head and neck cancer patients post-radiotherapy: a pilot study.

Vesty, Anna / Gear, Kim / Boutell, Sharon / Taylor, Michael W / Douglas, Richard G / Biswas, Kristi

Scientific reports

2020 Volume 10, Issue 1, Page(s) 13201

Abstract: Xerostomia detrimentally affects the oral health of many head and neck cancer patients who undergo radiotherapy. Its sequelae become an ongoing burden for patients that often manifest as periodontal disease and dental decay. Bacteria play a major role in ...

Abstract	Xerostomia detrimentally affects the oral health of many head and neck cancer patients who undergo radiotherapy. Its sequelae become an ongoing burden for patients that often manifest as periodontal disease and dental decay. Bacteria play a major role in the pathogenesis of these conditions and here we explore the use of an oral probiotic to beneficially modulate the oral bacterial community post-radiotherapy. In this pilot study, a four-week intervention with oral probiotic lozenges containing Streptococcus salivarius M18 was trialled in seven patients. Post-intervention changes in oral health and in the composition of the plaque and saliva bacterial communities were compared with six patients in a placebo group. An improvement in periodontal screening and plaque index scores was observed in both groups after the intervention period. The oral probiotic lozenges did not significantly impact bacterial community composition or diversity, nor did the probiotic lozenges increase the relative sequence abundance of ZOTU_1 (the probiotic-associated sequence assigned to S. salivarius) detected in the samples. Network analyses suggest negative interactions occurred between ZOTU_1 and species from the periopathogenic genera Campylobacter, Fretibacterium, Selenomonas and Treponema but further investigation is required to more fully understand the beneficial properties of this oral probiotic.
MeSH term(s)	Administration, Oral ; Biodiversity ; Cohort Studies ; Double-Blind Method ; Female ; Head and Neck Neoplasms/microbiology ; Head and Neck Neoplasms/radiotherapy ; Humans ; Male ; Middle Aged ; Pilot Projects ; Probiotics/administration & dosage ; Probiotics/pharmacology ; Streptococcus salivarius/physiology
Language	English
Publishing date	2020-08-06
Publishing country	England
Document type	Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-020-70024-y
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Article ; Online: Mycoplasma genitalium Antimicrobial Resistance in Community and Sexual Health Clinic Patients, Auckland, New Zealand.

Vesty, Anna / McAuliffe, Gary / Roberts, Sally / Henderson, Gillian / Basu, Indira

Emerging infectious diseases

2020 Volume 26, Issue 2, Page(s) 332–335

Abstract: Our retrospective study compared genotypic antimicrobial resistance in Mycoplasma genitalium-positive specimens collected from 48 community and 33 sexual health clinic (SHC) patients. Macrolide resistance was similar in community (75%) and SHC (76%) ... ...

Abstract	Our retrospective study compared genotypic antimicrobial resistance in Mycoplasma genitalium-positive specimens collected from 48 community and 33 sexual health clinic (SHC) patients. Macrolide resistance was similar in community (75%) and SHC (76%) patients. We observed no significant difference in fluoroquinolone resistance between community (19%) and SHC (27%) patients (p = 0.66).
MeSH term(s)	Adult ; Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Drug Resistance, Bacterial ; Female ; Fluoroquinolones/pharmacology ; Fluoroquinolones/therapeutic use ; Humans ; Male ; Mycoplasma Infections/drug therapy ; Mycoplasma Infections/epidemiology ; Mycoplasma genitalium/drug effects ; Mycoplasma genitalium/isolation & purification ; New Zealand/epidemiology ; Residence Characteristics ; Retrospective Studies ; Sexual Health ; Young Adult
Chemical Substances	Anti-Bacterial Agents ; Fluoroquinolones
Language	English
Publishing date	2020-01-21
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1380686-5
ISSN	1080-6059 ; 1080-6040
ISSN (online)	1080-6059
ISSN	1080-6040
DOI	10.3201/eid2602.190533
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Zs.A 4778: Show issues

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Article ; Online: Oral microbial influences on oral mucositis during radiotherapy treatment of head and neck cancer.

Vesty, Anna / Gear, Kim / Biswas, Kristi / Mackenzie, Brett Wagner / Taylor, Michael W / Douglas, Richard G

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer

2019 Volume 28, Issue 6, Page(s) 2683–2691

Abstract: Purpose: Oral mucositis (OM) remains a significant complication developed by many patients undergoing radiotherapy (RT) to the head and neck region. Emerging data suggest oral microbes may contribute to the onset and severity of this acute side effect.!# ...

Abstract	Purpose: Oral mucositis (OM) remains a significant complication developed by many patients undergoing radiotherapy (RT) to the head and neck region. Emerging data suggest oral microbes may contribute to the onset and severity of this acute side effect. Methods: In this study, saliva and oral swabs from head and neck cancer patients undergoing RT were collected. We employed molecular microbiological techniques to study the bacterial communities present in saliva, and both the bacterial and fungal communities present on the buccal mucosa and lateral tongue. Changes in microbiota composition with increasing radiation dose and the presence of mucositis were examined. Results: The data suggest that the salivary microbiota remain stable during RT and are consistently dominated by Streptococcus, Prevotella, Fusobacterium and Granulicatella. Obligate and facultative anaerobic Gram-negative bacilli (GNB) Bacteroidales G2, Capnocytophaga, Eikenella, Mycoplasma and Sneathia, as well as anaerobic GNB in the periopathogenic genera Porphyromonas and Tannerella, were all positively correlated with ≥ grade 2 OM. Significant increases in the relative abundances of Bacteroidales G2, Fusobacterium and Sneathia were identified in buccal mucosa swabs at sites of ≥ grade 2 OM (p < 0.05). Furthermore, the abundance of several GNB (Fusobacterium, Haemophilus, Tannerella, Porphyromonas and Eikenella) on the buccal mucosa may influence patient susceptibility to developing OM. Candida was widely detected in buccal mucosa swabs, regardless of mucositis status. Conclusions: Our findings support previously hypothesized associations between oral health and the pathogenesis of OM, highlighting the importance of oral health interventions for head and neck cancer patients.
MeSH term(s)	Bacteria/classification ; Bacteria/isolation & purification ; Candida/isolation & purification ; Female ; Head and Neck Neoplasms/radiotherapy ; Humans ; Male ; Microbiota ; Middle Aged ; Mouth Mucosa/microbiology ; Oral Health ; Saliva/microbiology ; Stomatitis/etiology ; Stomatitis/microbiology ; Tongue/microbiology
Language	English
Publishing date	2019-10-25
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1134446-5
ISSN	1433-7339 ; 0941-4355
ISSN (online)	1433-7339
ISSN	0941-4355
DOI	10.1007/s00520-019-05084-6
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Zs.A 3697: Show issues

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Article ; Online: Microbial and inflammatory-based salivary biomarkers of head and neck squamous cell carcinoma.

Vesty, Anna / Gear, Kim / Biswas, Kristi / Radcliff, Fiona J / Taylor, Michael W / Douglas, Richard G

Clinical and experimental dental research

2018 Volume 4, Issue 6, Page(s) 255–262

Abstract: Head and neck squamous cell carcinoma (HNSCC) patients often present with poor oral health, making it difficult to assess the relationship between oral microbes, inflammation, and carcinoma. This study investigates salivary microbes and inflammatory ... ...

Abstract	Head and neck squamous cell carcinoma (HNSCC) patients often present with poor oral health, making it difficult to assess the relationship between oral microbes, inflammation, and carcinoma. This study investigates salivary microbes and inflammatory cytokines as biomarkers for HNSCC, with consideration of oral health. Saliva was collected from 30 participants, including 14 HNSCC patients and 16 participants representing both dentally compromised and healthy individuals. Bacterial and fungal communities were analyzed based on 16S rRNA gene and ITS1 amplicon sequencing, respectively, and concentrations of inflammatory cytokines were quantified using a cytometric bead array, with flow cytometry. Diversity-based analyses revealed that the bacterial communities of HNSCC patients were significantly different to those of the healthy control group but not the dentally compromised patients. Fungal communities were dominated by
Language	English
Publishing date	2018-11-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	2829558-4
ISSN	2057-4347 ; 2057-4347
ISSN (online)	2057-4347
ISSN	2057-4347
DOI	10.1002/cre2.139
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Article: Helicobacter cinaedi bacteremia in a returning traveler

Fox-Lewis, Andrew / Basu, Indira / Vesty, Anna / Henderson, Gillian / Chhibber, Aakash V. / Thomas, Mark

IDCases

Abstract: Of the non‐Helicobacter pylori Helicobacter (NHPH) species, Helicobacter cinaedi is an emerging cause of infection in humans Here we report a novel clinical presentation of H cinaedi infection: a case of fever in a returning traveler A 31 year old ... ...

Abstract	Of the non‐Helicobacter pylori Helicobacter (NHPH) species, Helicobacter cinaedi is an emerging cause of infection in humans Here we report a novel clinical presentation of H cinaedi infection: a case of fever in a returning traveler A 31 year old previously fit and well male presented with onset of fever 24 hours after returning from travel in Singapore and Indonesia Associated symptoms consisted of sore throat, mild shortness of breath, generalized myalgia and arthralgia, headache, and four episodes of loose stools The patient recovered spontaneously without treatment and was discharged After 4 days of incubation, blood cultures grew H cinaedi H cinaedi is a slow-growing fastidious organism poorly detected by some commonly used automated blood culture systems, and difficult to identify using commercial or traditional biochemical identification systems This case illustrates the importance of H cinaedi as an emerging pathogen in immunocompetent patients, with a wide variety of possible clinical presentations The challenges in the microbiological diagnosis of H cinaedi infections lead us to speculate that H cinaedi is an underdiagnosed cause of febrile illness, both in returning travelers and in other clinical settings
Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #639284
Database	COVID19

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Article ; Online: Evaluating the Impact of DNA Extraction Method on the Representation of Human Oral Bacterial and Fungal Communities.

Vesty, Anna / Biswas, Kristi / Taylor, Michael W / Gear, Kim / Douglas, Richard G

PloS one

2017 Volume 12, Issue 1, Page(s) e0169877

Abstract: The application of high-throughput, next-generation sequencing technologies has greatly improved our understanding of the human oral microbiome. While deciphering this diverse microbial community using such approaches is more accurate than traditional ... ...

Abstract	The application of high-throughput, next-generation sequencing technologies has greatly improved our understanding of the human oral microbiome. While deciphering this diverse microbial community using such approaches is more accurate than traditional culture-based methods, experimental bias introduced during critical steps such as DNA extraction may compromise the results obtained. Here, we systematically evaluate four commonly used microbial DNA extraction methods (MoBio PowerSoil® DNA Isolation Kit, QIAamp® DNA Mini Kit, Zymo Bacterial/Fungal DNA Mini PrepTM, phenol:chloroform-based DNA isolation) based on the following criteria: DNA quality and yield, and microbial community structure based on Illumina amplicon sequencing of the V3-V4 region of the 16S rRNA gene of bacteria and the internal transcribed spacer (ITS) 1 region of fungi. Our results indicate that DNA quality and yield varied significantly with DNA extraction method. Representation of bacterial genera in plaque and saliva samples did not significantly differ across DNA extraction methods and DNA extraction method showed no effect on the recovery of fungal genera from plaque. By contrast, fungal diversity from saliva was affected by DNA extraction method, suggesting that not all protocols are suitable to study the salivary mycobiome.
MeSH term(s)	Biodiversity ; Chemical Fractionation/methods ; DNA, Bacterial/isolation & purification ; DNA, Fungal/isolation & purification ; Humans ; Metagenomics/methods ; Microbiota ; Mouth/microbiology ; RNA, Ribosomal, 16S ; Saliva/microbiology
Chemical Substances	DNA, Bacterial ; DNA, Fungal ; RNA, Ribosomal, 16S
Language	English
Publishing date	2017
Publishing country	United States
Document type	Journal Article
ISSN	1932-6203
ISSN (online)	1932-6203
DOI	10.1371/journal.pone.0169877
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