Cited by 317Endometriosis Research and TreatmentPain Mechanisms and TreatmentsPlant and fungal interactions

Hyperalgesia, nerve infiltration and nerve growth factor expression in deep adenomyotic nodules, peritoneal and ovarian endometriosis

Anaf, V., Simon, P., El Nakadi, I., Fayt, I., Simonart, T., Buxant, F., Noel, J-C.·2002·Human Reproduction

Abstract

BACKGROUND: The aim of this study was to investigate a possible role for nerve growth factor (NGF) in the mechanism of pain and hyperalgesia induced by deep adenomyotic nodules and other forms of endometriosis and to clarify the relationship between endometriotic lesions and the surrounding nerves. METHODS: Endometriotic lesions (deep adenomyotic nodules, peritoneal endometriosis, ovarian endometriosis) and eutopic endometrium were obtained from 51 patients presenting with pain. Patients were allocated to two groups (group 1: patients with a deep adenomyotic nodule (n = 23); group 2: patients with peritoneal and/or ovarian endometriosis but without deep adenomyotic nodule (n = 28). Immunohistochemistry with antibodies against NGF, NGF specific tyrosine-kinase receptor (Trk-A) and S-100 protein was performed. Results were expressed as mean H-scores +/- SD, and correlated with the presence of hyperalgesia. RESULTS: The percentage of patients presenting hyperalgesia at physical examination was significantly higher in group 1 (96%) than in group 2 (11%) (P < 0.001). NGF expression was significantly stronger in deep adenomyotic nodules (DAN) than in ovarian (OE) and peritoneal endometriosis (PE), both in the proliferative phase in the glands [DAN: 226 +/- 18; OE: 140 +/- 9 (P < 0.001); PE: 110 +/- 7 (P < 0.001)] and in the stroma [(DAN: 204 +/- 21; OE: 125 +/- 15 (P < 0.001); PE: 100 +/- 9 (P < 0.01)]. NGF expression in DAN is also significantly stronger than in OE and PE in the secretory phase in the glands [DAN:181 +/- 32; OE: 85 +/- 3.3 (P < 0.001); PE: 65 +/- 9 (P < 0.001)] and in the stroma [DAN: 173 +/- 28; OE: 85 +/- 3.7 (P < 0.001); PE: 35 +/- 13 (P < 0.001)]. Perineurial and intraneurial invasion by endometriotic lesions were found only in deep adenomyotic nodules and not in the other forms of endometriosis. The specific receptor for NGF (Trk-A) is expressed in all the nerves that were included in the biopsies. CONCLUSIONS: These results suggest a role of NGF in endometriotic pain and hyperalgesia in deep adenomyotic nodules. The strong expression of the NGF-TrkA pathway in deep adenomyotic nodules could explain why this type of lesion infiltrates in richly innervated anatomical sites.

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Crossref · 10.1093/humrep/17.7.1895

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  • Nerve growth factor in lesions may contribute to pain, particularly in deep adenomyotic nodules, where it correlates with hyperalgesia defined as intense pain when pressure is applied to the posterior fornix.

    “The presence of nerve growth factor (NGF) in lesions may be involved, especially in deep adenomyotic nodules where it correlates with hyperalgesia, defined as intense pain reported when pressure is exerted in the posterior fornix”
  • Deep endometriosis (DE) lesions are frequently hyperinnervated.

    “More strikingly, DE lesions are frequently hyperinnervated29–34.”
  • Adenomyosis externa lesions occasionally invade nerves and have some neurotropic effect.

    “These adenomyosis externa lesions occasionally invade nerves (14) and have some neurotropic effect (15,16).”

    From Pathogenesis of deep endometriosis (2017) · cites this paper as [14]

  • The specific receptor Trk-A for NGF is expressed in nerves lying within deep lesions or in the vicinity of deep endometriotic lesions.

    “Nerve growth factor (NGF), which plays a key role in the occurrence of pain, hyperalgesia, and neuropathic pain, is strongly expressed in deep infiltrating endometriosis, and its specific receptor (Trk-A) is expressed in nerves lying within deep lesions or in the vicinity of deep endometriotic lesions (9).”
  • Nerve growth factor (NGF) plays a key role in the occurrence of pain, hyperalgesia, and neuropathic pain.

    “Nerve growth factor (NGF), which plays a key role in the occurrence of pain, hyperalgesia, and neuropathic pain, is strongly expressed in deep infiltrating endometriosis, and its specific receptor (Trk-A) is expressed in nerves lying within deep lesions or in the vicinity of deep endometriotic lesions (9).”

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Research works printed but not linked: 2

  1. Bouaziz, H. and Lombard, M.C. (1997) La douleur en gyne ´cologie. Arnette Blackwell, Paris, pp. 23-40.
  2. Noyes, R.W. (1973) Normal phases of the endometrium. In Norris, H.J., Hertig, A.T. and Abbel, M.R. (eds) The Uterus . Williams and Wilkins, Baltimore, pp. 110-135.

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Authors
Anaf, V., Simon, P., El Nakadi, I., Fayt, I., Simonart, T., Buxant, F., & Noel, J.-C.
Affiliations
  • Université Libre de Bruxelles (BE)
  • Erasmus Hospital (BE)
Venue
Human Reproduction
Published
2002-07-01
Volume
17
Issue
7
Pages
1895-1900
ISSN
  • 0268-1161 (ISSN-L)
  • 1460-2350
OpenAlex
W2110802986
Cited by
317
References
29
Citations by year
2026: 6 · 2025: 8 · 2024: 9 · 2023: 13 · 2022: 12 · 2021: 16 · 2020: 16 · 2019: 17 · 2018: 13 · 2017: 19 · 2016: 18 · 2015: 23 · 2014: 24 · 2013: 17 · 2012: 19
FWCI
3.72
Type
journal article
Language
en
Open access
closed
Locations
  • Human Reproduction (publishedVersion)
  • PubMed (publishedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Plant and fungal interactions
Keywords
endometriosis, hyperalgesia, nerve growth factor, S-100 protein, peritoneal endometriosis, endometrioma, nerve infiltration, endometrial stroma, menstrual cycle phases, eutopic endometrium, immunohistochemistry, tyrosine kinase inhibitors
MeSH terms
Adult, Endometriosis, Female, Humans, Hyperalgesia, Immunohistochemistry, Nervous System, Ovarian Diseases, Peritoneal Diseases, Nerve Growth Factor

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