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Systematic Analysis of the Cerebrospinal Fluid Proteome of Fibromyalgia patients

ABSTRACT: Fibromyalgia (FM) is a syndrome characterized by widespread muscular pain, fatigue and functional symptoms, which is known to be difficult to diagnose as the various symptoms overlap with many other conditions. Currently, there are no biomarkers for FM, and the diagnosis is made subjectively by the clinicians. We have performed shotgun proteomics on cerebrospinal fluid (CSF) from FM patients and non-pain controls to find potential biomarker candidates for this syndrome.

INSTRUMENT(S): LTQ FT

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Cerebrospinal Fluid

DISEASE(S): Fibromyalgia

SUBMITTER: Payam Emami Khoonsari

LAB HEAD: Kim Kultima

PROVIDER: PXD008076 | Pride | 2018-04-25

REPOSITORIES: Pride

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Publications

Systematic analysis of the cerebrospinal fluid proteome of fibromyalgia patients.

Khoonsari Payam Emami PE Musunri Sravani S Herman Stephanie S Svensson Camilla I CI Tanum Lars L Gordh Torsten T Kultima Kim K

Journal of proteomics 20180412

Fibromyalgia (FM) is a syndrome characterized by widespread muscular pain, fatigue and functional symptoms, which is known to be difficult to diagnose as the various symptoms overlap with many other conditions. Currently, there are no biomarkers for FM, and the diagnosis is made subjectively by the clinicians. We have performed shotgun proteomics on cerebrospinal fluid (CSF) from FM patients and non-pain controls to find potential biomarker candidates for this syndrome. Based on our multivariate ...[more]

PMID: 29656018

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Manual therapy improves fibromyalgia symptoms by downregulating SIK1

Project description:Fibromyalgia (FM), classified by ICD-11 with code MG30.0, is a chronic debilitating disease characterized by wide-spread pain, fatigue, cognitive impairment, sleep and intestinal alterations, among other. FM affects a large proportion of the world-wide population, with increased prevalence among women. The lack of understanding of its etiology and pathophysiology hampers the development of effective treatments. Our group had developed a manual therapy (MT) pressure-controlled custom manual protocol on FM showing hyperalgesia/allodynia, fatigue and patient’s quality of life benefits in a cohort of 38 FM cases (NCT04174300). With the aim of understanding the therapeutic molecular mechanisms triggered by MT, this study interrogated PBMC transcriptomes from FM participants of this clinical trial using RNAseq and RT-qPCR technologies. The results showed that the salt-induced kinase SIK1 gene was consistently downregulated by MT in FM, correlating with improvement of patient symptoms. In addition, the study compared the findings in a non-FM control cohort subjected to the same MT protocol evidencing that changes in SIK1 expression with MT only occurred in individuals with FM. This positions SIK1 as a potential biomarker to monitor response to MT, and as a therapeutic target of FM, to be further explored by continuation studies. Keywords: fibromyalgia; myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS); pressure point threshold (PPT); physiotherapy; manual therapy (MT); NCT04174300; SIK1

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Peptidomics analysis of urine from IC/BPS patients and healthy controls

Project description:Interstitial cystitis/bladder pain syndrome (IC/BPS) is a chronic and debilitating pain disorder of the bladder and urinary tract with poorly understood etiology. A definitive diagnosis of IC/BPS can be challenging because many symptoms of IC/BPS are shared with other urological disorders. An analysis of urine presents an attractive and non-invasive resource for monitoring and diagnosing IC/BPS. Here, a non-targeted LC-MS and LC-MS/MS-based peptidomics analysis of urine samples collected from IC/BPS patients were compared to urine samples from asymptomatic controls.

2022-06-06 | PXD031843 | Pride

Correlation of gene expression with bladder capacity in interstitial cystitis/bladder pain syndrome

Project description:Interstitial cystitis (IC) and bladder pain syndrome are terms used to describe a heterogenous chronic pelvic and bladder pain disorder of unknown etiology. The goal of this pilot study was to determine if gene expression profiling of bladder biopsy tissue from patients experiencing symptoms could be used to separate the patients based on some clinical parameter. Gene expression profiles in bladder biopsy tissue from patients with: (1) low bladder capacity (defined here as <400 ml upon hydordistension), (2) normal capacity (M-bM-^IM-%400 ml), and (3) controls were compared. Gene expression profiles from low bladder capacity tissues differed significantly from normal capacity and control tissue, suggesting gene expression profiling may be a useful tool for better understanding IC disease pathophysiology.

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Serum proteomics of sng- and pain-trend fibromyalgia patients

Project description:Fibromyalgia (FM) is a chronic pain condition and consists of widespread pain with similarities to neuropathic pain in clinical findings, pathophysiology, and neuropharmacology. Its mechanisms are poorly understood and a lack of effective biomarkers for diagnosis and onset prediction. This study aimed to identify the metabolites to characterize pain and sngception (Sng) in FM.

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Peripheral Blood Gene Expression in Fibromyalgia Patients Reveals Potential Biological Markers and Physiological Pathways

Project description:Fibromyalgia (FM) is a common pain disorder characterized by dysregulation in the processing of pain. Although FM has similarities with other rheumatologic pain disorders, the search for objective markers has not been successful. In the current study we analyzed gene expression in the whole blood of 70 fibromyalgia patients and 70 healthy matched controls. Global molecular profiling revealed an upregulation of several inflammatory molecules in FM patients and downregulation of specific pathways related to hypersensitivity and allergy. There was a differential expression of genes in known pathways for pain processing, such as glutamine/glutamate signaling and axonal development. We also identified a panel of candidate gene expression-based classifiers that could establish an objective blood-based molecular diagnostic to objectively identify FM patients and guide design and testing of new therapies. Ten classifier probesets (CPA3, C11orf83, LOC100131943, RGS17, PARD3B, ANKRD20A9P, TTLL7, C8orf12, KAT2B and RIOK3) provided a diagnostic sensitivity of 95% and a specificity of 96%. Molecular scores developed from these classifiers were able to clearly distinguish FM patients from healthy controls. An understanding of molecular dysregulation in fibromyalgia is in its infancy; however the results described herein indicate blood global gene expression profiling provides many testable hypotheses that deserve further exploration.

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DNA methylation analysis in women with fibromyalgia

Project description:FM is a complex syndrome with physiological, genetics and environmental factors involved. It can present changes in functional neuroimaging, in cortical excitability measurements performed by transcranial magnetic stimulation and in grey matter density. Similarly, it has been shown that patients with FM have abnormal autonomic control, inflammatory profile and dysfunctional hypothalamic–pituitary–adrenal axis leading to disruptive sleep and fatigue. We characterized clinical and neurophysiological parameters and peripheral blood DNA methylation profiles of patients with FM and compared them to sex and age matched healthy controls. We hypothesized that these exploratory analyses could provide mechanistic insights into the pathophysiology of FM and possibly contribute to the future development of biological markers of diagnosis.We showed that patients with fibromyalgia have different (mainly hypo-) methylated CpG sites related to genes implicated in immune system and response to external stress pathways and that this methylation profile is related to a dysfunctional connectivity in pain network, adding evidence to consider fibromyalgia as a DOHAD disorder.

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