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Increased cutaneous miR-let-7d expression correlates with small nerve fiber pathology in patients with fibromyalgia syndrome
Abstract
Fibromyalgia syndrome (FMS) is a chronic widespread pain condition probably comprising subgroups with different underlying pathomechanisms. There is increasing evidence for small nerve fiber impairment in subgroups of patients with FMS. MicroRNAs (miRNAs) regulate molecular factors determining nerve de- and re-generation. We investigated whether systemic and cutaneous miRNA expression in patients with FMS is related to small nerve fiber pathology. We confirmed previous findings of disturbed small fiber function and reduced intraepidermal nerve fiber density in subgroups of patients with FMS. We found 51 aberrantly expressed miRNAs in white blood cells of patients with FMS, of which miR-let-7d correlated with reduced small nerve fiber density in patients with FMS. Furthermore, we demonstrated miR-let-7d and its downstream target insulin-like growth factor-1 receptor as being aberrantly expressed in skin of patients with FMS with small nerve fiber impairment. Our study gives further evidence of small nerve fiber pathology in FMS subgroups and provides a missing link in the pathomechanism that may lead to small fiber loss in subgroups of patients with FMS.
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“however, the exact impact of the peripheral nervous system on pain in FMS is still a matter of debate.”
From Pain and small fiber pathology in men with fibromyalgia syndrome (2024) · cites this paper as [26]
In the citing paper
“In line with previous studies mainly performed in women with FMS,12,15,26,33,50 we found evidence for impaired small nerve fiber function in male patients with FMS. This was reflected by elevated thermal detection thresholds, increased mechanical pain thresholds, and alterations in the pleasant touch test.”
From Pain and small fiber pathology in men with fibromyalgia syndrome (2024) · cites this paper as [26]
In the citing paper
“Previous data on sensory profiles in FMS are quite divergent,12,15,26,27,33,50 which may be due to diversity in the normative reference values and subjectivity of this standardized, but psychophysical method.”
From Pain and small fiber pathology in men with fibromyalgia syndrome (2024) · cites this paper as [26]
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Reduction of skin innervation is associated with a severe fibromyalgia phenotype
Evdokimov, D., Frank, J., Klitsch, A., Unterecker, S., Warrings, B., Serra, J., Papagianni, A., Saffer, N., Meyer zu Altenschildesche, C., Kampik, D., et al. (2019) · Annals of Neurology · doi:10.1002/ana.25565 · Cited by 152
Self-citationPain and small fiber pathology in men with fibromyalgia syndrome
Feulner, B., Gross, F., Evdokimov, D., Malik, R. A., Kampik, D., & Üçeyler, N. (2024) · PAIN Reports · doi:10.1097/pr9.0000000000001212 · Cited by 8
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Metadata
- Authors
- Leinders, M., Doppler, K., Klein, T., Deckart, M., Rittner, H., Sommer, C., & Üçeyler, N.
- Affiliations
- University of Würzburg (DE)
- Pain Clinic Am Arkauwald, Bad Mergentheim, Germany
- Corresponding author
- Üçeyler, Nurcan
- Venue
- Pain
- Published
- 2016-07-15
- Volume
- 157
- Issue
- 11
- Pages
- 2493-2503
- ISSN
- 0304-3959 (ISSN-L)
- 1872-6623
- OpenAlex
- W2466067781
- Cited by
- 71
- References
- 1
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 4 · 2023: 6 · 2022: 7 · 2021: 8 · 2020: 9 · 2019: 10 · 2018: 6 · 2017: 10 · 2016: 1
- FWCI
- 7.99
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Pain (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Julius-Maximilians-Universität Würzburg
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Fibromyalgia and Chronic Fatigue Syndrome Research
- Health Sciences › Medicine › Physiology (medical) › Pain Mechanisms and Treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
- Keywords
- fibromyalgia, microRNA expression, intraepidermal nerve fiber density, IGF-1 receptor, leukocytes, chronic widespread pain, neuropathic pain
- MeSH terms
- Small Fiber Neuropathy, Adult, Aged, Female, Fibromyalgia, Humans, Leukocytes, Male, Middle Aged, Pain Measurement, Surveys and Questionnaires, RNA, Messenger, Severity of Illness Index, Skin, Gene Expression, Pain Threshold, Statistics, Nonparametric, MicroRNAs, Young Adult
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