PMID- 38422691 OWN - NLM STAT- MEDLINE DCOM- 20240408 LR - 20240408 IS - 1872-8421 (Electronic) IS - 0165-5728 (Linking) VI - 389 DP - 2024 Apr 15 TI - Neuromodulator hydrogen sulfide attenuates sickness behavior induced by lipopolysaccharide. PG - 578324 LID - S0165-5728(24)00042-0 [pii] LID - 10.1016/j.jneuroim.2024.578324 [doi] AB - Sickness behavior reflects a state of altered physiology and central nervous system function that occurs during systemic infection or inflammation, serving as an adaptive response to illness. This study aims to elucidate the role of hydrogen sulfide (H(2)S) in regulating sickness behavior and neuroinflammatory responses in a rat model of systemic inflammation. Adult male Wistar rats were treated with lipopolysaccharide (LPS) to induce sickness behavior. Intracerebroventricular (i.c.v.) pretreatments included aminooxyacetic acid (AOAA), an inhibitor of H(2)S synthesis, and sodium sulfide (NaHS), an H(2)S donor. Behavioral assays were conducted, along with the assessment of astrocyte activation, as indicated by GFAP expression in the hypothalamus. Pretreatment with NaHS mitigated LPS-induced behavioral changes, including hypophagia, social and exploratory deficits, without affecting peripheral cytokine levels, indicating a central modulatory effect. AOAA, conversely, accentuated certain behavioral responses, suggesting a complex role of endogenous H(2)S in sickness behavior. These findings were reinforced by a lack of effect on plasma interleukin levels but significant reduction in GFAP expression. Our findings support the central role of H(2)S in modulating neuroinflammation and sickness behavior, highlighting the therapeutic potential of targeting H(2)S signaling in neuroinflammatory conditions. CI - Copyright (c) 2024 Elsevier B.V. All rights reserved. FAU - Oliveira, Merelym K AU - Oliveira MK AD - Programa de Pos-Graduacao Multicentrico em Ciencias Fisiologicas, Instituto de Ciencias Biomedicas, Universidade Federal de Alfenas (Unifal-MG), Alfenas, MG, Brazil. FAU - Batista, Tatiane H AU - Batista TH AD - Programa de Pos-Graduacao Multicentrico em Ciencias Fisiologicas, Instituto de Ciencias Biomedicas, Universidade Federal de Alfenas (Unifal-MG), Alfenas, MG, Brazil. FAU - Rojas, Viviana Carolina T AU - Rojas VCT AD - Programa de Pos-Graduacao Multicentrico em Ciencias Fisiologicas, Instituto de Ciencias Biomedicas, Universidade Federal de Alfenas (Unifal-MG), Alfenas, MG, Brazil. FAU - Vitor-Vieira, Fernando AU - Vitor-Vieira F AD - Programa de Pos-Graduacao Multicentrico em Ciencias Fisiologicas, Instituto de Ciencias Biomedicas, Universidade Federal de Alfenas (Unifal-MG), Alfenas, MG, Brazil. FAU - Reis, Leticia AU - Reis L AD - Programa de Pos-Graduacao em Biociencias, Instituto de Ciencias Biomedicas, Universidade Federal de Alfenas (Unifal-MG), Alfenas, MG, Brazil. FAU - Giusti, Fabiana Cardoso Vilela AU - Giusti FCV AD - Programa de Pos-Graduacao em Biociencias, Instituto de Ciencias Biomedicas, Universidade Federal de Alfenas (Unifal-MG), Alfenas, MG, Brazil; Centro de Inovacao e Ensaios Pre-Clinicos (CIEnP), Florianopolis, SC, Brazil. FAU - Giusti-Paiva, Alexandre AU - Giusti-Paiva A AD - Departamento de Ciencias Fisiologicas, Centro de Ciencias Biologicas, Universidade Federal de Santa Catarina, Florianopolis, SC, Brazil. Electronic address: alexandre.giusti@ufsc.br. LA - eng PT - Journal Article DEP - 20240224 PL - Netherlands TA - J Neuroimmunol JT - Journal of neuroimmunology JID - 8109498 RN - YY9FVM7NSN (Hydrogen Sulfide) RN - 0 (Lipopolysaccharides) RN - FWU2KQ177W (sodium bisulfide) RN - 14I68GI3OQ (Aminooxyacetic Acid) RN - 0 (Neurotransmitter Agents) RN - 0 (Sulfides) SB - IM MH - Rats MH - Male MH - Animals MH - *Hydrogen Sulfide/pharmacology/therapeutic use MH - Lipopolysaccharides/toxicity MH - Illness Behavior MH - Rats, Wistar MH - Inflammation/chemically induced/drug therapy/metabolism MH - Aminooxyacetic Acid/pharmacology MH - Neurotransmitter Agents MH - *Sulfides OTO - NOTNLM OT - Central nervous system OT - Cystathionine beta-synthase OT - Endotoxemia OT - Illness behavior OT - Neuroinflammation COIS- Declaration of competing interest The authors report no biomedical financial interests or other potential conflicts of interest. EDAT- 2024/03/01 01:22 MHDA- 2024/04/08 06:43 CRDT- 2024/02/29 18:06 PHST- 2023/12/22 00:00 [received] PHST- 2024/02/19 00:00 [revised] PHST- 2024/02/22 00:00 [accepted] PHST- 2024/04/08 06:43 [medline] PHST- 2024/03/01 01:22 [pubmed] PHST- 2024/02/29 18:06 [entrez] AID - S0165-5728(24)00042-0 [pii] AID - 10.1016/j.jneuroim.2024.578324 [doi] PST - ppublish SO - J Neuroimmunol. 2024 Apr 15;389:578324. doi: 10.1016/j.jneuroim.2024.578324. Epub 2024 Feb 24.