PMID- 36436910 OWN - NLM STAT- MEDLINE DCOM- 20230519 LR - 20230525 IS - 1881-7122 (Electronic) IS - 1341-1357 (Print) IS - 0007-5124 (Linking) VI - 72 IP - 2 DP - 2023 May 17 TI - Impaired healing of cutaneous wound in a Trpv1 deficient mouse. PG - 224-232 LID - 10.1538/expanim.22-0124 [doi] AB - Transient Receptor Potential (TRP) ion channels mediate the influx of cations into cells responding to chemical or physical stimuli. TRP vanilloid 1 (TRPV1) regulates cutaneous functions. Its function in cutaneous wound healing, however, has not been clarified. The current study elucidated the role of TRPV1 in cutaneous wound healing of dorsal circular excisional injury using Trpv1-null (KO) and wild type (WT) male/female C57BL/6 mice. Macroscopic observation showed that the remaining cutaneous lesion was significantly larger in KO than that of WT at postoperative days (POD) 7 and 10. Histological analysis showed significantly delayed re-epithelialization in KO at POD7. The number of macrophages in KO and WT similarly returned to the reduced state from POD4 to POD7. Whereas, the number of neutrophils in KO did not significantly return to the reduced state, in contrast to WT. Of note, The H3Cit-labeled NETs (Neutrophil Extracellular Traps) formation of KO was prominently increased both in POD4 and 7. The current results suggest that the loss of TRPV1 induces prolonged neutrophilic inflammation and NETs formation, retarding murine cutaneous wound healing in vivo. This study provides a possible link with TRPV1 and neutrophilic regulation in cutaneous wound healing. FAU - Ueno, Kazuki AU - Ueno K AD - Department of Plastic and Reconstructive Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. FAU - Saika, Shizuya AU - Saika S AD - Department of Ophthalmology, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. FAU - Okada, Yuka AU - Okada Y AD - Department of Ophthalmology, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. FAU - Iwanishi, Hiroki AU - Iwanishi H AD - Department of Ophthalmology, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. FAU - Suzuki, Kentaro AU - Suzuki K AD - Department of Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. AD - Faculty of Life and Environmental Sciences, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan. FAU - Yamada, Gen AU - Yamada G AD - Department of Plastic and Reconstructive Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. AD - Department of Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. FAU - Asamura, Shinichi AU - Asamura S AD - Department of Plastic and Reconstructive Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan. LA - eng PT - Journal Article DEP - 20221125 PL - Japan TA - Exp Anim JT - Experimental animals JID - 9604830 RN - 0 (TRPV1 protein, mouse) RN - 0 (TRPV Cation Channels) SB - IM MH - Mice MH - Female MH - Male MH - Animals MH - Mice, Knockout MH - Mice, Inbred C57BL MH - *Wound Healing/genetics MH - *TRPV Cation Channels/genetics PMC - PMC10202716 OTO - NOTNLM OT - Neutrophil Extracellular Traps (NETs) OT - knockout mouse OT - neutrophil OT - transient receptor potential vanilloid subtype 1 (TRPV1) OT - wound healing COIS- The authors declare no conflict of interest. EDAT- 2022/11/28 06:00 MHDA- 2023/05/19 06:42 PMCR- 2023/01/01 CRDT- 2022/11/27 21:07 PHST- 2023/05/19 06:42 [medline] PHST- 2022/11/28 06:00 [pubmed] PHST- 2022/11/27 21:07 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 22-0124 [pii] AID - 10.1538/expanim.22-0124 [doi] PST - ppublish SO - Exp Anim. 2023 May 17;72(2):224-232. doi: 10.1538/expanim.22-0124. Epub 2022 Nov 25.