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Xie Q, Wang Y, Zou GL. Protective effects of lavender oil on sepsis-induced acute lung injury via regulation of the NF-κB pathway. Pharm Biol 2022; 60:968-978. [PMID: 35588105 PMCID: PMC9122384 DOI: 10.1080/13880209.2022.2067570] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 03/11/2022] [Accepted: 04/12/2022] [Indexed: 06/15/2023]
Abstract
CONTEXT Lavender oil (Lav) from Lavandula angustifolia L. (Lamiacease) exhibits antioxidative and anti-inflammatory properties against various diseases. OBJECTIVE The study explores the effect of Lav pre-treatment on sepsis-induced acute lung injury (ALI). MATERIALS AND METHODS Sprague-Dawley rats were assigned into Sham, caecal ligation and puncture (CLP), CLP + Lav (200, 400, and 800 mg/kg) groups. Lav was administered by gavage, once a day, for 7 days. Histological analysis was performed using haematoxylin and eosin staining. Cytokine and nitrite levels were detected by enzyme-linked immunosorbent assay kits and Griess reagent. Gene and protein expression were tested by quantitative real-time polymerase chain reaction and western blot. RESULTS The levels of tumour necrosis factor-α (BALF: 64%, serum: 59%), interleukin (IL)-1β (BALF: 63%, serum: 66%) and IL-6 (BALF: 54%, serum: 59%), and nitrite (40%) and inducible nitric oxide synthase (51%), and the level of myeloperoxidase (66%) and malondialdehyde (59%), and cleaved-caspase 3 (84%) and Bax expression (74%) induced by CLP were decreased when given Lav. Additionally, the level of superoxide dismutase (211%) and glutathione (139%), and the expression of Bcl-2 (980%) induced by CLP were increased when given Lav. The increased p-nuclear factor (NF)-κB/NF-κB (72%) and p-inhibitor of κBα (IκBα)/IκBα (77%) induced by CLP could be reversed by Lav. DISCUSSION AND CONCLUSIONS Lav pre-treatment might protect rats from sepsis-induced ALI via deactivation of the NF-κB pathway. Our research demonstrated the regulatory mechanisms of Lav in sepsis-induced ALI and can provide a theoretical basis for the use of Lav in the treatment of sepsis-induced ALI.
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Affiliation(s)
- Qian Xie
- Pediatrics Department, Heilongjiang Provincial Hospital, Harbin, Heilongjiang, China
| | - Yi Wang
- Pediatrics Department, The Sanya Hongsen Hospital of Harbin Medical Universit, Sanya, Hainan, China
| | - Guo-Liang Zou
- No.1 Cardiovascular Disease Department, Heilongjiang Chinese Medical University No.1 Affiliated Hospital, Harbin, Heilongjiang, China
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Chen H, Peng Y, Wang L, Wang X. Sevoflurane attenuates cognitive dysfunction and NLRP3-dependent caspase-1/11-GSDMD pathway-mediated pyroptosis in the hippocampus via upregulation of SIRT1 in a sepsis model. Arch Physiol Biochem 2022; 128:1413-1420. [PMID: 32538180 DOI: 10.1080/13813455.2020.1773860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Septic encephalopathy (SE) is a devastating consequence of sepsis, a hyper-triggered host response against infectious challenge, which ultimately leads to brain damage. The present study examined whether sevoflurane (SVF), a volatile anaesthetic, can counteract the perturbation of homeostasis in a caecal ligation and puncture (CLP)-induced mouse model of SE. SVF enhances neurocognition in terms of spatial memory improvement via counter-regulation of activated oxidative-inflammatory stress and pyroptotic processes in SE. Further, the beneficial effects of SVF against SE are mediated by activation of silent information regulator 1 (SIRT1)-mediated reduction of reactive oxygen species (ROS) level, regulation of thioredoxin (TXN) and thioredoxin interacting protein (TIP) levels, reduction of inflammatory-pyroptotic signalling (NLRP3, caspase 1/11, GSDMD, TLR4 and TRIF) proteins, as well as a reduction of inflammatory cytokine (IL-1β and IL-18) levels. These findings suggest that SVF may have therapeutic potential for the treatment of SE and associated cognitive malfunction.
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Affiliation(s)
- Hao Chen
- Department of Anesthesiology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yi Peng
- Department of Anesthesiology, Shijiazhuang First Hospital, Shijiazhuang, China
| | - Li Wang
- Department of Anesthesiology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xin Wang
- Department of Anesthesiology, The First Hospital of Hebei Medical University, Shijiazhuang, China
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Browne CA, Clarke G, Fitzgerald P, O'Sullivan J, Dinan TG, Cryan JF. Distinct post-sepsis induced neurochemical alterations in two mouse strains. Brain Behav Immun 2022; 104:39-53. [PMID: 35569797 DOI: 10.1016/j.bbi.2022.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/12/2022] [Accepted: 05/06/2022] [Indexed: 11/20/2022] Open
Abstract
Sepsis associated encephalopathy, occurs in 70% of severe septic cases, following which survivors exhibit long-term cognitive impairment or global loss of cognitive function. Currently there is no clearly defined neurochemical basis of septic encephalopathy. Moreover, the lingering neurological complications associated with the severe acute respiratory syndrome CoV 2 (SARS-CoV-2) and the significant worsening in outcomes for those individuals with SARS-Cov-2 following sepsis underscore the need to define factors underlying the susceptibility to acute toxic encephalitis. In this study, differential neurochemical sequelae in response to sepsis (lipopolysaccharide (LPS)-induced endotoxemia and caecal ligation and puncture (CLP)), were evaluated in two inbred mouse strains, known to differ in behaviour, immune profile, and neurotransmitter levels, namely BALB/c and C57BL/6J. It was hypothesized that these strains would differ in sepsis severity, cytokine profile, peripheral tryptophan metabolism and central monoamine turnover. BALB/c mice exhibited more pronounced sickness behavioural scores, hypothermia, and significant upregulation of cytokines in the LPS model relative to C57BL/6J mice. Increased plasma kynurenine/tryptophan ratio, hippocampal serotonin and brainstem dopamine turnover were evident in both strains, but the magnitude was greater in BALB/c mice. In addition, CLP significantly enhanced kynurenine levels and hippocampal serotonergic and dopaminergic neurotransmission in C57BL/6J mice. Overall, these studies depict consistent changes in kynurenine, serotonin, and dopamine post sepsis. Further evaluation of these monoamines in the context of septic encephalopathy and cognitive decline is warranted. Moreover, these data suggest the continued evaluation of altered peripheral kynurenine metabolism as a potential blood-based biomarker of sepsis.
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Affiliation(s)
- Caroline A Browne
- APC Microbiome Ireland, University College Cork, Ireland; Neuropharmacology Research Group, Department of Pharmacology & Therapeutics, University College Cork, Ireland; Department of Psychiatry & Neurobehavioural Science, University College Cork, Ireland.
| | - Gerard Clarke
- APC Microbiome Ireland, University College Cork, Ireland; Department of Anatomy & Neuroscience, University College Cork, Ireland
| | | | | | - Timothy G Dinan
- APC Microbiome Ireland, University College Cork, Ireland; Neuropharmacology Research Group, Department of Pharmacology & Therapeutics, University College Cork, Ireland
| | - John F Cryan
- APC Microbiome Ireland, University College Cork, Ireland; Neuropharmacology Research Group, Department of Pharmacology & Therapeutics, University College Cork, Ireland; Department of Anatomy & Neuroscience, University College Cork, Ireland
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Wu XJ, Yan XT, Yang XM, Zhang Y, Wang HY, Luo H, Fang Q, Li H, Li XY, Chen K, Wang YL, Zhang ZZ, Song XM. GTS-21 ameliorates polymicrobial sepsis-induced hepatic injury by modulating autophagy through α7nAchRs in mice. Cytokine 2020; 128:155019. [PMID: 32018068 DOI: 10.1016/j.cyto.2020.155019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Previous studies showed that GTS-21, a selective alpha 7 nAchR agonist, can trigger anti-inflammatory effects and improve the survival of septic animals. However, whether GTS-21 affects autophagy responses remains unclear. Here, we tested the hypothesis that GTS-21 ameliorates sepsis-induced hepatic injury by modulating autophagy in mice. METHOD C57BL/6 male mice were randomly separated and categorized into four groups: the sham group, and CLP group subjected to caecal ligation and puncture (CLP, a model of polymicrobial sepsis). The CLP + GTS-21 group was administered GTS-21 immediately after CLP challenge. α-Bungarotoxin (an alpha 7 nAchR antagonist) was injected before CLP was performed, and then, after CLP challenge, GTS-21 was administered to α-BGT + CLP + GTS-21 group. The hepatic tissue and blood samples were harvested 6 h after the operation. RESULTS CLP challenge increased TNF-α and IL-6 production, and hepatic enzyme alanine aminotransferase and aspartate transaminase levels. CLP also elevated the expression of hepatic LC3-II, sequestosome-1/p62, Atg7 and Atg5. The administration of GTS-21 inhibited pro-inflammatory cytokine production and hepatic enzymatic marker expression, promoted the expression of LC3-II, Atg7, Atg5, and decreased the expression of p62, which could be reversed by α-BGT treatment. CONCLUSION Our findings suggested that α7nAchR is involved in diminishing hepatic damage by inhibiting inflammatory responses and improving autophagy in mice with polymicrobial sepsis.
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Affiliation(s)
- Xiao-Jing Wu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan 430060, Wuchang, 238 Liberation Road, Hubei Province, China
| | - Xue-Tao Yan
- Department of Anesthesiology, Bao'an Maternity & Child Health Hospital, Shenzhen 518100, Baoan, 56 Yulv Road, Guangdong Province, China
| | - Xu-Ming Yang
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Ying Zhang
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Hong-Yu Wang
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Huan Luo
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Qing Fang
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Hui Li
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Xin-Yi Li
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Kai Chen
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Yan-Lin Wang
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Zong-Ze Zhang
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China
| | - Xue-Min Song
- The Research Centre of Anesthesiology and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Wuchang, 125 Donghu Road, Hubei Province, China.
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Ugwu FN, Ho J. Preclinical evidence of sphingosine kinase 1 inhibition in alleviation of intestinal epithelial injury in polymicrobial sepsis. Inflamm Res 2019; 68:723-6. [PMID: 31154460 DOI: 10.1007/s00011-019-01255-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Intestinal epithelial injury in septic patients predicts subsequent development of multiple organ failure, but its regulation by host factors remains unclear. Sphingosine kinase 1 is an enzyme-regulating inflammatory response. METHODS Cecal ligation and puncture was used to induce sepsis in C57BL/6 mice with and without N,N-dimethylsphingosine, a SphK1 inhibitor. Symptom severity was monitored by murine sepsis severity score. The intestinal barrier function was determined using 4KDa fluorescein-dextran. Bacterial load in the bloodstream was determined by 16S rRNA gene amplification. RESULTS AND CONCLUSIONS Our preliminary experimental data showed that expression of sphingosine kinase 1 in ileum was increased by sixfold in septic mice. Pharmacological blockade of sphingosine kinase 1 alleviated septic symptoms. The intestinal permeability and bacterial load in the bloodstream were also reduced in these animals. We hypothesized that inhibition of sphingosine kinase 1 may reduce pro-inflammatory cytokine production, and alleviate intestinal epithelial injury during sepsis. Further mechanistic studies and clinical specimen analyses are warranted.
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