TRPA1 Mechanoreceptors Mediate the IL-6 Response to a Single PD Dwell in the Rat

Nilsson, Daniel; Jennische, Eva; Cavallini, Nicola; Braide, Magnus

doi:10.3747/pdi.2016.00290

Cited by 1 publication

(1 citation statement)

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“…In support of the current findings, we have recently shown in experimental monosodium urate (MSU) crystal-induced gouty inflammation that the production of IL-6 was attenuated in TRPA1 KO mice and by pharmacological inhibition of TRPA1 [21]. TRPA1 has also been reported to mediate IL-6 synthesis in the peritoneal tissue in the rat in response to peritoneal dialysis fluid administration [44]. Further, in an oxazolone-induced atopic dermatitis model, the expression of IL-6 was significantly decreased in skin samples from TRPA1 KO mice compared to WT mice [45].…”

Section: Discussionsupporting

confidence: 86%

Transient Receptor Potential Ankyrin 1 (TRPA1) Is Involved in Upregulating Interleukin-6 Expression in Osteoarthritic Chondrocyte Models

Nummenmaa

Hämäläinen

Pemmari

et al. 2020

IJMS

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Transient receptor potential ankyrin 1 (TRPA1) is a membrane-bound ion channel found in neurons, where it mediates nociception and neurogenic inflammation. Recently, we have discovered that TRPA1 is also expressed in human osteoarthritic (OA) chondrocytes and downregulated by the anti-inflammatory drugs aurothiomalate and dexamethasone. We have also shown TRPA1 to mediate inflammation, pain, and cartilage degeneration in experimental osteoarthritis. In this study, we investigated the role of TRPA1 in joint inflammation, focusing on the pro-inflammatory cytokine interleukin-6 (IL-6). We utilized cartilage/chondrocytes from wild-type (WT) and TRPA1 knockout (KO) mice, along with primary chondrocytes from OA patients. The results show that TRPA1 regulates the synthesis of the OA-driving inflammatory cytokine IL-6 in chondrocytes. IL-6 was highly expressed in WT chondrocytes, and its expression, along with the expression of IL-6 family cytokines leukemia inhibitory factor (LIF) and IL-11, were significantly downregulated by TRPA1 deficiency. Furthermore, treatment with the TRPA1 antagonist significantly downregulated the expression of IL-6 in chondrocytes from WT mice and OA patients. The results suggest that TRPA1 is involved in the upregulation of IL-6 production in chondrocytes. These findings together with previous results on the expression and functions of TRPA1 in cellular and animal models point to the role of TRPA1 as a potential mediator and novel drug target in osteoarthritis.

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Section: Discussionsupporting

confidence: 86%

Transient Receptor Potential Ankyrin 1 (TRPA1) Is Involved in Upregulating Interleukin-6 Expression in Osteoarthritic Chondrocyte Models

Nummenmaa

Hämäläinen

Pemmari

et al. 2020

IJMS

View full text Add to dashboard Cite

show abstract

TRPA1 Mechanoreceptors Mediate the IL-6 Response to a Single PD Dwell in the Rat

Abstract: The results show that IL-6 synthesis and secretion were connected to acute PD fluid exposure, and this response was triggered by TRPA1 receptors, possibly located to non-neuronal cells.

Cited by 1 publication

References 39 publications

Transient Receptor Potential Ankyrin 1 (TRPA1) Is Involved in Upregulating Interleukin-6 Expression in Osteoarthritic Chondrocyte Models

Transient Receptor Potential Ankyrin 1 (TRPA1) Is Involved in Upregulating Interleukin-6 Expression in Osteoarthritic Chondrocyte Models

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