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Altered gut microbiota and endocannabinoid system tone in vitamin D deficiency-mediated chronic pain

Francesca Guida, Serena Boccella, Carmela Belardo, Monica Iannotta, Fabiana Piscitelli, Francesca De Filippis, Salvatore Paino, Flavia Ricciardi, Dario Siniscalco, Ida Marabese, Livio Luongo, Danilo Ercolini, Vincenzo Di Marzo, Sabatino Maione. Brain Behav Immun. 2020 Mar:85:128-141.

Laboratory studyOther animals

Design
Laboratory study
Subjects
Mice on a low vitamin D diet, normal-diet controls, and mice with spared nerve injury; numbers not stated in the abstract
Dose used in the study
Palmitoylethanolamide; dose and route not stated in the abstract
Duration
Not stated in the abstract
What was measured
Gut microbiota composition, tactile allodynia, spinal neuronal excitability, spinal and gut endocannabinoid system markers.

What the authors reported

This laboratory study found:

  • PEA counteracted the pain behaviour and spinal changes caused by vitamin D deficiency, and increased Akkermansia, Eubacterium and Enterobacteriaceae versus vehicle.
  • Deficiency itself lowered microbial diversity, raised Firmicutes and lowered Verrucomicrobia and Bacteroidetes, and deficient mice showed allodynia, spinal hyperexcitability and altered endocannabinoid markers.
  • Nerve injury did not change the microbiota.

Limits of this study

A mouse model; it cannot show effect in people. PEA dose, route and numbers are not in the abstract. Funding and conflicts not stated in the abstract.

Source

PubMed 30953765 · doi:10.1016/j.bbi.2019.04.006

Entry checked against the abstract on PubMed on 2026-09-22. The dose shown is the dose the researchers used. It is not a recommendation. How to read this page.