PMID- 33956874 OWN - NLM STAT- MEDLINE DCOM- 20211004 LR - 20211004 IS - 1553-7374 (Electronic) IS - 1553-7366 (Print) IS - 1553-7366 (Linking) VI - 17 IP - 5 DP - 2021 May TI - Pseudomonas aeruginosa-induced nociceptor activation increases susceptibility to infection. PG - e1009557 LID - 10.1371/journal.ppat.1009557 [doi] LID - e1009557 AB - We report a rapid reduction in blink reflexes during in vivo ocular Pseudomonas aeruginosa infection, which is commonly attributed and indicative of functional neuronal damage. Sensory neurons derived in vitro from trigeminal ganglia (TG) were able to directly respond to P. aeruginosa but reacted significantly less to strains of P. aeruginosa that lacked virulence factors such as pili, flagella, or a type III secretion system. These observations led us to explore the impact of neurons on the host's susceptibility to P. aeruginosa keratitis. Mice were treated with Resiniferatoxin (RTX), a potent activator of Transient Receptor Potential Vanilloid 1 (TRPV1) channels, which significantly ablated corneal sensory neurons, exhibited delayed disease progression that was exemplified with decreased bacterial corneal burdens and altered neutrophil trafficking. Sensitization to disease was due to the increased frequencies of CGRP-induced ICAM-1+ neutrophils in the infected corneas and reduced neutrophil bactericidal activities. These data showed that sensory neurons regulate corneal neutrophil responses in a tissue-specific matter affecting disease progression during P. aeruginosa keratitis. Hence, therapeutic modalities that control nociception could beneficially impact anti-infective therapy. FAU - Lin, Tiffany AU - Lin T AUID- ORCID: 0000-0001-9829-2045 AD - Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Quellier, Daisy AU - Quellier D AUID- ORCID: 0000-0003-0999-8965 AD - Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Lamb, Jeffrey AU - Lamb J AD - Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Voisin, Tiphaine AU - Voisin T AUID- ORCID: 0000-0003-0643-5948 AD - Department of Immunology, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Baral, Pankaj AU - Baral P AUID- ORCID: 0000-0002-3902-2368 AD - Department of Immunology, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Bock, Felix AU - Bock F AD - Department of Ophthalmology, University Hospital of Cologne, Cologne, Germany. FAU - Schonberg, Alfrun AU - Schonberg A AUID- ORCID: 0000-0002-5660-9072 AD - Department of Ophthalmology, University Hospital of Cologne, Cologne, Germany. FAU - Mirchev, Rossen AU - Mirchev R AD - Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Pier, Gerald AU - Pier G AUID- ORCID: 0000-0002-9112-2331 AD - Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Chiu, Isaac AU - Chiu I AD - Department of Immunology, Harvard Medical School, Boston, Massachusetts, United States of America. FAU - Gadjeva, Mihaela AU - Gadjeva M AUID- ORCID: 0000-0002-9014-386X AD - Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America. LA - eng GR - DP2 AT009499/AT/NCCIH NIH HHS/United States GR - R01 AI130019/AI/NIAID NIH HHS/United States GR - R01 EY022054/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20210506 PL - United States TA - PLoS Pathog JT - PLoS pathogens JID - 101238921 SB - IM MH - Animals MH - *Disease Models, Animal MH - Female MH - Keratitis/etiology/metabolism/*pathology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Neutrophils/*immunology MH - Nociceptors/*metabolism MH - Pseudomonas Infections/*complications MH - Pseudomonas aeruginosa/*physiology MH - Trigeminal Nerve Diseases/etiology/metabolism/*pathology PMC - PMC8101935 COIS- No authors have competing interests. EDAT- 2021/05/07 06:00 MHDA- 2021/10/05 06:00 PMCR- 2021/05/06 CRDT- 2021/05/06 18:06 PHST- 2020/09/08 00:00 [received] PHST- 2021/04/13 00:00 [accepted] PHST- 2021/05/06 18:06 [entrez] PHST- 2021/05/07 06:00 [pubmed] PHST- 2021/10/05 06:00 [medline] PHST- 2021/05/06 00:00 [pmc-release] AID - PPATHOGENS-D-20-01997 [pii] AID - 10.1371/journal.ppat.1009557 [doi] PST - epublish SO - PLoS Pathog. 2021 May 6;17(5):e1009557. doi: 10.1371/journal.ppat.1009557. eCollection 2021 May.