Advanced Research on Fibromyalgia (3rd Edition)

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Molecular and Translational Medicine".

Deadline for manuscript submissions: 31 August 2025 | Viewed by 986

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Guest Editor
Department of Neuroscience, Psychology, Drug Research and Child Health, Neurofarba, Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
Interests: pain pharmacology; chronic pain; neuropathic pain; visceral pain; peripheral nervous system; central nervous system; glia; neuroimmune interactions; gut microbiota
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Special Issue Information

Dear Colleagues,

Fibromyalgia is a chronic and debilitating disorder that manifests with diffuse musculoskeletal pain, fatigue, psychological distress, poor quality of life, sleep issues, and cognitive dysfunction. The global prevalence of fibromyalgia is high and is estimated to occur in 2–8% of the general population. Diagnosis is primarily established clinically, per the American College of Rheumatology 2010 diagnostic criteria. Importantly, there is a paucity of data supporting the use of diagnostic and treatment-related biomarkers of fibromyalgia.

Treatment is often challenging in patients with fibromyalgia, and current therapeutic options often have limited efficacy. To date, there are only three analgesic medications approved by the United States Food and Drug Administration for the treatment of fibromyalgia, including pregabalin, duloxetine, and milnacipran. These medications typically only offer approximately a 30% improvement in pain intensity, which is often unsatisfactory in patients with fibromyalgia who suffer from comorbid psychosocial issues, cognitive dysfunction, and mood disorders.

This Special Issue welcomes all types of manuscripts that provide insight into aspects relevant to basic science and clinical research on fibromyalgia. We are interested in a wide range of work, including pathophysiology, diagnostic biomarkers, treatment-related biomarkers, and outcome-related research on fibromyalgia. Moreover, we are interested in understanding the epigenetics and genetics of fibromyalgia, specifically the genetic mutations and polymorphisms related to fibromyalgia. Finally, data from clinical trials of therapies for fibromyalgia will be highly appreciated. This Special Issue welcomes both scientific and clinical studies, and will cover original articles, high-quality reviews, and a limited number of pertinent meta-analyses.

Dr. Elena Lucarini
Guest Editor

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Keywords

  • fibromyalgia
  • chronic fatigue syndrome
  • myofascial pain syndrome
  • diagnostic biomarkers
  • biomarkers for predicting treatment response
  • disability
  • rehabilitation
  • chronic pain
  • mutations and polymorphisms of genes related to fibromyalgia
  • epigenetics

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Published Papers (3 papers)

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Research

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13 pages, 289 KiB  
Article
Association of Genetic Variants, Such as the μ-Opioid Receptor 1 (OPRM1) rs1799971 and Catechol-O-Methyltransferase (COMT) rs4680, with Phenotypic Expression of Fibromyalgia
by Isabel Erenas Ondategui, Julia Gómez Castro, Sandra Estepa Hernández, Celia Chicharro Miguel, Regina Peiró Cárdenas, Ana Fernández-Araque and Zoraida Verde
Biomedicines 2025, 13(5), 1183; https://doi.org/10.3390/biomedicines13051183 - 13 May 2025
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Abstract
Background/Objectives: Genetic variants, such as the µ-opioid receptor 1 (OPRM1) rs1799971 and the catechol-O-methyltransferase (COMT) rs4680, have been considered among the potential causes in the development of some chronic pain conditions. In this regard, there are controversial [...] Read more.
Background/Objectives: Genetic variants, such as the µ-opioid receptor 1 (OPRM1) rs1799971 and the catechol-O-methyltransferase (COMT) rs4680, have been considered among the potential causes in the development of some chronic pain conditions. In this regard, there are controversial results regarding their roles in fibromyalgia (FM). We aimed to investigate whether the OPRM1 rs1799971 and COMT rs4680 polymorphisms are associated with the development of or susceptibility to FM, as well as their potential association with syndrome characteristic variables, in a sample of the Spanish population with and without FM. Methods: The present study analysed COMT Val158Met and OPRM1 Asn40Asp genetic variants in 311 FM patients (301 women and 10 men) and 135 non-FM participants (120 women and 15 men). In addition to clinical variables, widespread pain index (WPI), symptom severity scale (SSS) (fatigue, rest quality, and cognitive symptoms), pain, stress episodes, and Borg scale were collected. Results: The main results indicate that women carrying the Val/Val genotype (i.e., high COMT activity) exhibited significantly lower levels of fatigue, cognitive impairment, and total SSS than heterozygote carriers. In addition, Met allele carriers (i.e., lower COMT activity) showed higher probabilities of suffering a stress episode and higher levels of exertion during daily activities. Conclusions: The present research suggests a link between dopaminergic dysfunction and exacerbated, frequently described symptoms in female FM patients. Although further research with wider genetic variants and recruited patients is needed, these results point out the necessity of considering gender as a separate category in chronic pain studies. Full article
(This article belongs to the Special Issue Advanced Research on Fibromyalgia (3rd Edition))
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Review

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23 pages, 1040 KiB  
Review
Juvenile Primary Fibromyalgia Syndrome: Advances in Etiopathogenesis, Clinical Assessment and Treatment: A Narrative Review
by Claudio Lavarello, Silvana Ancona and Clara Malattia
Biomedicines 2025, 13(5), 1168; https://doi.org/10.3390/biomedicines13051168 - 10 May 2025
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Abstract
Juvenile Primary Fibromyalgia Syndrome (JPFS) is a complex, multifactorial condition characterized by widespread musculoskeletal pain, often accompanied by sleep disturbances, headaches, cognitive and mood disorders, and fatigue, resulting in a significant impact on the quality of life for affected children, adolescents, and their [...] Read more.
Juvenile Primary Fibromyalgia Syndrome (JPFS) is a complex, multifactorial condition characterized by widespread musculoskeletal pain, often accompanied by sleep disturbances, headaches, cognitive and mood disorders, and fatigue, resulting in a significant impact on the quality of life for affected children, adolescents, and their families. Although recent advances have improved the understanding of the underlying pathophysiological mechanisms and therapeutic approaches, its etiology and optimal treatments remain largely unknown. In this review, we summarize recent advances in the etiopathogenesis, clinical assessment, and treatment of JPFS. Our aim is to support clinicians in the diagnosis and management of JPFS patients, while also highlighting key areas that require further research to improve diagnostic accuracy and therapeutic outcomes. Full article
(This article belongs to the Special Issue Advanced Research on Fibromyalgia (3rd Edition))
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17 pages, 668 KiB  
Review
Quantitative Sensory Testing in Fibromyalgia Syndrome: A Scoping Review
by Adriana Munhoz Carneiro, Marina de Góes Salvetti, Camila Squarzoni Dale and Valquíria Aparecida da Silva
Biomedicines 2025, 13(4), 988; https://doi.org/10.3390/biomedicines13040988 - 17 Apr 2025
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Abstract
Background/Objectives: Quantitative sensory testing (QST) is one of the most reliable methods for assessing Fibromyalgia Syndrome (FMS). Despite its importance, there are still controversies regarding the correct interpretation of evoked responses, as they may vary depending on the protocol, individual characteristics, disease [...] Read more.
Background/Objectives: Quantitative sensory testing (QST) is one of the most reliable methods for assessing Fibromyalgia Syndrome (FMS). Despite its importance, there are still controversies regarding the correct interpretation of evoked responses, as they may vary depending on the protocol, individual characteristics, disease severity, and other factors. This study aims to examine how QST has been applied as an outcome measure in FMS. Methods: We considered three databases (Medline, Embase, and Web of Science) until June 2024. From a total of 2512 studies, 126 (39 RCTs and 87 non-RCTs) were selected for full reading after assessment for risk of bias and eligibility criteria. These criteria included at least one type of QST and a clear diagnosis of fibromyalgia (FMS). Results: The results highlighted a lack of standardization in QST, as no reported protocols were followed and there was no specific number of tender points tested for FMS. Additionally, there was inconsistency in the selection of sites and types of tests conducted. Conclusions: This heterogeneity in methodology may affect the comparability and interpretation of results, underscoring the urgent need for standardized guidelines for conducting QST in fibromyalgia studies. A clear understanding of how QST has been measured could prompt a reevaluation of current approaches to FMS assessment, leading to more accurate interpretations and, ultimately, improved management of this complex condition. Full article
(This article belongs to the Special Issue Advanced Research on Fibromyalgia (3rd Edition))
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