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  1. Article ; Online: Investigating the association between the symptoms of women with Fibromyalgia, Digestive function, and markers of the microbiota of the Gastrointestinal Tract (The FIDGIT Study): study protocol.

    Erdrich, Sharon / Hawrelak, Jason A / Myers, Stephen P / Vuyisich, Momchilo / Harnett, Joanna E

    BMC musculoskeletal disorders

    2023  Volume 24, Issue 1, Page(s) 150

    Abstract: Background: Fibromyalgia a common idiopathic condition affecting around 1.4% of adults globally. Its signature symptom is chronic widespread pain, with a constellation of somatic and psychological symptoms. Fibromyalgia is associated with significant ... ...

    Abstract Background: Fibromyalgia a common idiopathic condition affecting around 1.4% of adults globally. Its signature symptom is chronic widespread pain, with a constellation of somatic and psychological symptoms. Fibromyalgia is associated with significant reductions in quality of life, yet to date there is no biochemical marker for its diagnosis. Previous studies have indicated a strong association with gastrointestinal dysfunction, and more recently, alterations to the gut microbiome. No studies have examined the inter-relationship between fibromyalgia, gastrointestinal dysfunction, and the microbiome. This prospective observational case-controlled study will gather data on gastrointestinal function, dietary intake, fermentation patterns of ingested carbohydrates, and symptoms commonly associated with fibromyalgia. These will be evaluated alongside human gene expression and metatranscriptomic analysis of the oral and faecal microbiome.
    Methods: Adult women aged ≥18 years diagnosed with fibromyalgia and/or meeting ACR 2016 criteria, and healthy family or age-matched controls will be recruited from the community. From consenting participants, we will collect detailed survey information and samples of blood, urine, stool, saliva, and breath.
    Discussion: This is the first prospective study examining interactions between digestive function, human gene expression, and the gut microbiome together with general, and fibromyalgia-specific, symptoms experienced by New Zealand women. This exploration will allow an in-depth understanding of clinically relevant factors that are associated with fibromyalgia and will guide further research and contribute to improved management of this poorly understood condition.
    Trial registration: The study was approved by the New Zealand Health and Disability Committee (HDEC) (ref: 20/CEN/197) and registered with the Australia and New Zealand Clinical Trials Registry (ANZCTR), registration number ACTRN12620001337965. Written consent will be obtained after providing participants with detailed information about the procedures. Access to data will be restricted to the immediate research team, and all samples and survey data will be deidentified and coded before analysis.
    MeSH term(s) Adolescent ; Adult ; Female ; Humans ; Fibromyalgia/diagnosis ; Gastrointestinal Tract ; Microbiota ; Observational Studies as Topic ; Prospective Studies ; Quality of Life
    Language English
    Publishing date 2023-02-27
    Publishing country England
    Document type Clinical Trial Protocol ; Journal Article
    ZDB-ID 2041355-5
    ISSN 1471-2474 ; 1471-2474
    ISSN (online) 1471-2474
    ISSN 1471-2474
    DOI 10.1186/s12891-023-06259-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Maternal Antibiotic Exposure and the Risk of Developing Antenatal Depressive Symptoms.

    Pouranayatihosseinabad, Mahsa / Taylor, Maggie / Hawrelak, Jason A / Peterson, Gregory M / Veal, Felicity / Ling, Tristan / Williams, Mackenzie / Whatley, Megan / Ahdieh, Kyan / Mirkazemi, Corinne

    Journal of clinical medicine

    2024  Volume 13, Issue 5

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2024-03-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm13051434
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Re: European guideline on indications, performance, and clinical impact of hydrogen and methane breath tests in adult and pediatric patients.

    Erdrich, Sharon / Harnett, Joanna E / Hawrelak, Jason A / Myers, Stephen P

    United European gastroenterology journal

    2021  Volume 10, Issue 1, Page(s) 124

    MeSH term(s) Adult ; Breath Tests ; Child ; Humans ; Hydrogen ; Methane
    Chemical Substances Hydrogen (7YNJ3PO35Z) ; Methane (OP0UW79H66)
    Language English
    Publishing date 2021-12-09
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 2728585-6
    ISSN 2050-6414 ; 2050-6406
    ISSN (online) 2050-6414
    ISSN 2050-6406
    DOI 10.1002/ueg2.12184
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Determining the association between fibromyalgia, the gut microbiome and its biomarkers: A systematic review.

    Erdrich, Sharon / Hawrelak, Jason A / Myers, Stephen P / Harnett, Joanna E

    BMC musculoskeletal disorders

    2020  Volume 21, Issue 1, Page(s) 181

    Abstract: Background: The association between fibromyalgia and irritable bowel syndrome is well-established. Alterations in the composition and diversity of the gut microbiome in irritable bowel syndrome have been reported, however, this association is poorly ... ...

    Abstract Background: The association between fibromyalgia and irritable bowel syndrome is well-established. Alterations in the composition and diversity of the gut microbiome in irritable bowel syndrome have been reported, however, this association is poorly understood in fibromyalgia. Our aim was to summarise the research reporting on the gastrointestinal microbiome and its biomarkers in people with fibromyalgia.
    Methods: A systematic review of published original research reporting on the gastrointestinal microbiota and its biomarkers in adults with a diagnosis of fibromyalgia was undertaken.
    Results: From 4771 studies, 11 met our inclusion criteria and were separated into four main groups: papers reporting Helicobacter pylori; other gut bacterial markers; metabolomics and other biomarkers, which included intestinal permeability and small intestinal bacterial overgrowth.
    Conclusion: The results suggest there is a paucity of quality research in this area, with indications that the gut microbiota may play a role in fibromyalgia within the emerging field of the gut-musculoskeletal axis. Further investigations into the relationship between the gut microbiota, gut dysfunction and fibromyalgia are warranted.
    MeSH term(s) Biomarkers/metabolism ; Fibromyalgia/diagnosis ; Fibromyalgia/metabolism ; Fibromyalgia/microbiology ; Gastrointestinal Microbiome/physiology ; Humans ; Metabolomics/methods
    Chemical Substances Biomarkers
    Language English
    Publishing date 2020-03-20
    Publishing country England
    Document type Journal Article ; Systematic Review
    ZDB-ID 2041355-5
    ISSN 1471-2474 ; 1471-2474
    ISSN (online) 1471-2474
    ISSN 1471-2474
    DOI 10.1186/s12891-020-03201-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: A systematic review of the association between fibromyalgia and functional gastrointestinal disorders.

    Erdrich, Sharon / Hawrelak, Jason A / Myers, Stephen P / Harnett, Joanna E

    Therapeutic advances in gastroenterology

    2020  Volume 13, Page(s) 1756284820977402

    Abstract: Background: Fibromyalgia and functional gastrointestinal disorders (FGID) including irritable bowel syndrome (IBS) are common conditions presenting in clinical settings and are more prevalent in women. While the relationship between IBS and fibromyalgia ...

    Abstract Background: Fibromyalgia and functional gastrointestinal disorders (FGID) including irritable bowel syndrome (IBS) are common conditions presenting in clinical settings and are more prevalent in women. While the relationship between IBS and fibromyalgia has been demonstrated, a review of the prevalence of the broader group of FGID in adults with fibromyalgia has not been undertaken. The aim of this review was to systematically review the published literature, identifying the comorbidity of FGID in people with fibromyalgia, and to discuss the clinical implications, limitations of current research and areas of interest for future research.
    Methods: Medline, Embase, CINAHL and Web of Science were searched during June 2019. Results were screened for original research articles meeting established criteria for identification of FGID in adults diagnosed with fibromyalgia.
    Results: A total of 14 studies involving 1340 adults with fibromyalgia, 363 healthy controls and 441 adults with other pathologies were included in this review. Only 1 of the 14 studies included surveyed the full range of FGID . Functional gut disorders were matched to Rome II criteria for reporting and comparison. In addition to increased abdominal pain and functional bloating or gas, IBS of mixed-pattern and constipation-types appear to be more prevalent than diarrhoea-predominant IBS in adults with fibromyalgia.
    Conclusion: This review confirms previous reports that IBS is common in people living with fibromyalgia and suggests that IBS-mixed and constipation types predominate. An association with a range of FGID other than IBS is suggested, but data are limited. Research exploring the association between fibromyalgia and functional gastrointestinal dysfunction beyond IBS are warranted.
    Language English
    Publishing date 2020-12-08
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2440710-0
    ISSN 1756-2848 ; 1756-283X
    ISSN (online) 1756-2848
    ISSN 1756-283X
    DOI 10.1177/1756284820977402
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Exploring Criteria for the Translation of Traditional Knowledge Within Contemporary Clinical Practice, Research, Policy, and Education: A Stakeholder Forum.

    Steel, Amie / Foley, Hope / Bugarcic, Andrea / Wardle, Jon / Boyd, Hannah / Breakspear, Ian / Carlton, Anne-Louise / Cope, Greg / Dua, Kamal / Greenway, Patricia / Redmond, Rebecca / Hawrelak, Jason / Shukla, Naveen / Adams, Jon

    Journal of integrative and complementary medicine

    2023  Volume 29, Issue 6-7, Page(s) 348–360

    Abstract: Background: ...

    Abstract Background:
    MeSH term(s) Delivery of Health Care ; Educational Status ; Policy ; Medicine, Traditional
    Language English
    Publishing date 2023-04-03
    Publishing country United States
    Document type Journal Article
    ISSN 2768-3613
    ISSN (online) 2768-3613
    DOI 10.1089/jicm.2022.0683
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Hydrogen-methane breath testing results influenced by oral hygiene.

    Erdrich, Sharon / Tan, Edwin C K / Hawrelak, Jason A / Myers, Stephen P / Harnett, Joanna E

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 26

    Abstract: The measurement of hydrogen-methane breath gases is widely used in gastroenterology to evaluate malabsorption syndromes and bacterial overgrowth. Laboratories offering breath testing provide variable guidance regarding oral hygiene practices prior to ... ...

    Abstract The measurement of hydrogen-methane breath gases is widely used in gastroenterology to evaluate malabsorption syndromes and bacterial overgrowth. Laboratories offering breath testing provide variable guidance regarding oral hygiene practices prior to testing. Given that oral dysbiosis has the potential to cause changes in breath gases, it raises concerns that oral hygiene is not a standard inclusion in current breath testing guidelines. The aim of this study was to determine how a pre-test mouthwash may impact hydrogen-methane breath test results. Participants presenting for breath testing who had elevated baseline gases were given a chlorhexidine mouthwash. If a substantial reduction in expired hydrogen or methane occurred after the mouthwash, breath samples were collected before and after a mouthwash at all breath sample collection points for the duration of testing. Data were evaluated to determine how the mouthwash might influence test results and diagnostic status. In 388 consecutive hydrogen-methane breath tests, modifiable elevations occurred in 24.7%. Administration of a chlorhexidine mouthwash resulted in significantly (p ≤ 0.05) reduced breath hydrogen in 67% and/or methane gas in 93% of those consenting to inclusion. In some cases, this modified the diagnosis. Mean total gas concentrations pre- and post-mouthwash were 221.0 ppm and 152.1 ppm (p < 0.0001) for hydrogen, and 368.9 ppm and 249.8 ppm (p < 0.0001) for methane. Data suggest that a single mouthwash at baseline has a high probability of returning a false positive diagnosis. Variations in gas production due to oral hygiene practices has significant impacts on test interpretation and the subsequent diagnosis. The role of oral dysbiosis in causing gastrointestinal symptoms also demands exploration as it may be an underlying factor in the presenting condition that was the basis for the referral.
    MeSH term(s) Adolescent ; Adult ; Aged ; Breath Tests/methods ; Dysbiosis/diagnosis ; Exhalation ; Female ; Gases/analysis ; Gastrointestinal Diseases/diagnosis ; Humans ; Hydrogen/analysis ; Malabsorption Syndromes/diagnosis ; Male ; Methane/analysis ; Middle Aged ; Mouthwashes ; Oral Hygiene ; Young Adult
    Chemical Substances Gases ; Mouthwashes ; Hydrogen (7YNJ3PO35Z) ; Methane (OP0UW79H66)
    Language English
    Publishing date 2021-01-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-020-79554-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Response: Commentary: Consumer Reports of "Keto Flu" Associated With the Ketogenic Diet.

    Bostock, Emmanuelle C S / Kirkby, Kenneth C / Taylor, Bruce V / Hawrelak, Jason A

    Frontiers in nutrition

    2020  Volume 7, Page(s) 575713

    Language English
    Publishing date 2020-12-17
    Publishing country Switzerland
    Document type Journal Article ; Comment
    ZDB-ID 2776676-7
    ISSN 2296-861X
    ISSN 2296-861X
    DOI 10.3389/fnut.2020.575713
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Consumer Reports of "Keto Flu" Associated With the Ketogenic Diet.

    Bostock, Emmanuelle C S / Kirkby, Kenneth C / Taylor, Bruce V / Hawrelak, Jason A

    Frontiers in nutrition

    2020  Volume 7, Page(s) 20

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2020-03-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2776676-7
    ISSN 2296-861X
    ISSN 2296-861X
    DOI 10.3389/fnut.2020.00020
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Polycystic Ovary Syndrome: An Evolutionary Adaptation to Lifestyle and the Environment.

    Parker, Jim / O'Brien, Claire / Hawrelak, Jason / Gersh, Felice L

    International journal of environmental research and public health

    2022  Volume 19, Issue 3

    Abstract: Polycystic ovary syndrome (PCOS) is increasingly recognized as a complex metabolic disorder that manifests in genetically susceptible women following a range of negative exposures to nutritional and environmental factors related to contemporary lifestyle. ...

    Abstract Polycystic ovary syndrome (PCOS) is increasingly recognized as a complex metabolic disorder that manifests in genetically susceptible women following a range of negative exposures to nutritional and environmental factors related to contemporary lifestyle. The hypothesis that PCOS phenotypes are derived from a mismatch between ancient genetic survival mechanisms and modern lifestyle practices is supported by a diversity of research findings. The proposed evolutionary model of the pathogenesis of PCOS incorporates evidence related to evolutionary theory, genetic studies, in utero developmental epigenetic programming, transgenerational inheritance, metabolic features including insulin resistance, obesity and the apparent paradox of lean phenotypes, reproductive effects and subfertility, the impact of the microbiome and dysbiosis, endocrine-disrupting chemical exposure, and the influence of lifestyle factors such as poor-quality diet and physical inactivity. Based on these premises, the diverse lines of research are synthesized into a composite evolutionary model of the pathogenesis of PCOS. It is hoped that this model will assist clinicians and patients to understand the importance of lifestyle interventions in the prevention and management of PCOS and provide a conceptual framework for future research. It is appreciated that this theory represents a synthesis of the current evidence and that it is expected to evolve and change over time.
    MeSH term(s) Adaptation, Physiological ; Biological Evolution ; Female ; Humans ; Insulin Resistance ; Life Style ; Polycystic Ovary Syndrome/genetics ; Polycystic Ovary Syndrome/metabolism
    Language English
    Publishing date 2022-01-25
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2175195-X
    ISSN 1660-4601 ; 1661-7827
    ISSN (online) 1660-4601
    ISSN 1661-7827
    DOI 10.3390/ijerph19031336
    Database MEDical Literature Analysis and Retrieval System OnLINE

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