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Zhu S, Yu Y, Hong Q, Li C, Zhang H, Guo K. Neutrophil Extracellular Traps Upregulate p21 and Suppress Cell Cycle Progression to Impair Endothelial Regeneration after Inflammatory Lung Injury. J Clin Med 2024; 13:1204. [PMID: 38592032 PMCID: PMC10931969 DOI: 10.3390/jcm13051204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/23/2024] [Accepted: 02/10/2024] [Indexed: 04/10/2024] Open
Abstract
Background: Sepsis is a major cause of ICU admissions, with high mortality and morbidity. The lungs are particularly vulnerable to infection and injury, and restoration of vascular endothelial homeostasis after injury is a crucial determinant of outcome. Neutrophil extracellular trap (NET) release strongly correlates with the severity of lung tissue damage. However, little is known about whether NETs affect endothelial cell (EC) regeneration and repair. Methods: Eight- to ten-week-old male C57BL/6 mice were injected intraperitoneally with a sublethal dose of LPS to induce acute lung inflammatory injury or with PBS as a control. Blood samples and lung tissues were collected to detect NET formation and lung endothelial cell proliferation. Human umbilical vein endothelial cells (HUVECs) were used to determine the role of NETs in cell cycle progression in vitro. Results: Increased NET formation and impaired endothelial cell proliferation were observed in mice with inflammatory lung injury following septic endotoxemia. Degradation of NETs with DNase I attenuated lung inflammation and facilitated endothelial regeneration. Mechanistically, NETs induced p21 upregulation and cell cycle stasis to impair endothelial repair. Conclusions: Our findings suggest that NET formation impairs endothelial regeneration and vascular repair through the induction of p21 and cell cycle arrest during inflammatory lung injury.
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Affiliation(s)
- Shuainan Zhu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.Z.); (Y.Y.); (Q.H.); (C.L.)
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 210000, China
| | - Ying Yu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.Z.); (Y.Y.); (Q.H.); (C.L.)
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 210000, China
| | - Qianya Hong
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.Z.); (Y.Y.); (Q.H.); (C.L.)
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 210000, China
| | - Chenning Li
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.Z.); (Y.Y.); (Q.H.); (C.L.)
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 210000, China
| | - Hao Zhang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.Z.); (Y.Y.); (Q.H.); (C.L.)
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 210000, China
| | - Kefang Guo
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.Z.); (Y.Y.); (Q.H.); (C.L.)
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 210000, China
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Putri M, Rastiarsa BM, Djajanagara RATM, Ramli GA, Anggraeni N, Sutadipura N, Atik N, Syamsunarno MRAA. Effect of cogon grass root ethanol extract on fatty acid binding protein 4 and oxidative stress markers in a sepsis mouse model. F1000Res 2023; 10:1161. [PMID: 38559341 PMCID: PMC10980860 DOI: 10.12688/f1000research.73561.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/29/2023] [Indexed: 04/04/2024] Open
Abstract
Background: Sepsis causes several immunological and metabolic alterations that induce oxidative stress. The modulation of fatty acid-binding protein 4 (FABP4) has been shown to worsen this condition. Extract of cogon grass root (ECGR) contains flavonoids and isoeugenol compounds that exhibit anti-inflammatory and antioxidant properties. This study aimed to assess the effects of ECGR on FABP4 and oxidative stress-related factors in a sepsis mouse model. Methods: Twenty-nine male mice ( Mus musculus) of the Deutsche Denken Yoken strain were divided into four groups: group 1, control; group 2, mice treated with 10 μL/kg body weight (BW) lipopolysaccharide (LPS); and groups 3 and 4, mice pre-treated with 90 and 115 mg/kg BW, respectively, and then treated with 10 μL/kg BW LPS for 14 d. Blood, liver, lymph, and cardiac tissue samples were collected and subjected to histological and complete blood examinations. Antioxidant (Glutathione peroxidase 3 (GPx3) and superoxide dismutase), FABP4 levels, and immune system-associated biomarker levels (TNF-α, IL-6 and IL-1β) were measured. Results: Significant increases in platelet levels (p = 0.03), cardiomyocyte counts (p =0.004), and hepatocyte counts (p = 0.0004) were observed in group 4 compared with those in group 2. Conversely, compared with those in group 2, there were significant decreases in TNF-α expression in group 3 (p = 0.004), white pulp length and width in group 4 (p = 0.001), FABP4 levels in groups 3 and 4 (p = 0.015 and p = 0.012, respectively), lymphocyte counts in group 4 (p = 0.009), and monocyte counts (p = 0.000) and polymorphonuclear cell counts in the livers (p = 0.000) and hearts (p = 0.000) of groups 3 and 4. Gpx3 activity was significantly higher in group 3 than in group 1 (p = 0.04). Conclusions: ECGR reduces FABP4 level and modulating oxidative stress markers in sepsis mouse model.
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Affiliation(s)
- Mirasari Putri
- Department of Biochemistry, Nutrition and Biomolecular, Faculty of medicine. Universitas Islam Bandung, Bandung, West-Java, 40616, Indonesia
| | | | | | - Ghaliby Ardhia Ramli
- Faculty of Medicine, Universitas Islam Bandung, Bandung, West-Java, 40616, Indonesia
| | - Neni Anggraeni
- Medical Laboratorium Technologist, Bakti Asih School of Analyst, Bandung, West-Java, 40192, Indonesia
| | - Nugraha Sutadipura
- Department of Biochemistry, Nutrition and Biomolecular, Faculty of medicine. Universitas Islam Bandung, Bandung, West-Java, 40616, Indonesia
| | - Nur Atik
- Department of Biomedicine Sciences, Faculty of Medicine, Universitas Padjadjaran, West Java, 45363, Indonesia
| | - Mas Rizky A. A. Syamsunarno
- Department of Biomedicine Sciences, Faculty of Medicine, Universitas Padjadjaran, West Java, 45363, Indonesia
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Mathew D, Barillas-Cerritos J, Nedeljkovic-Kurepa A, Abraham M, Taylor MD, Deutschman CS. Phosphorylation of insulin receptor substrates (IRS-1 and IRS-2) is attenuated following cecal ligation and puncture in mice. Mol Med 2023; 29:106. [PMID: 37550630 PMCID: PMC10408057 DOI: 10.1186/s10020-023-00703-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/18/2023] [Indexed: 08/09/2023] Open
Abstract
BACKGROUND Sepsis is characterized as an insulin resistant state. However, the effects of sepsis on insulin's signal transduction pathway are unknown. The molecular activity driving insulin signaling is controlled by tyrosine phosphorylation of the insulin receptor β-subunit (IRβ) and of insulin receptor substrate molecules (IRS) -1 and IRS-2. HYPOTHESIS Cecal ligation and puncture (CLP) attenuates IRβ, IRS-1 and IRS-2 phosphorylation. METHODS IACUC-approved studies conformed to ARRIVE guidelines. CLP was performed on C57BL/6 mice; separate cohorts received intraperitoneal insulin at baseline (T0) or at 23 or 47 h. post-CLP, 1 h before mice were euthanized. We measured levels of (1) glucose and insulin in serum, (2) IRβ, IRS-1 and IRS-2 in skeletal muscle and liver homogenate and (3) phospho-Irβ (pIRβ) in liver and skeletal muscle, phospho-IRS-1 (pIRS-1) in skeletal muscle and pIRS-2 in liver. Statistical significance was determined using ANOVA with Sidak's post-hoc correction. RESULTS CLP did not affect the concentrations of IRβ, IRS-1or IRS-2 in muscle or liver homogenate or of IRS-1 in liver. Muscle IRS-1 concentration at 48 h. post-CLP was higher than at T0. Post-CLP pIRS-1 levels in muscle and pIRβ and pIRS-2 levels in liver were indistinguishable from T0 levels. At 48 h. post-CLP pIRβ levels in muscle were higher than at T0. Following insulin administration, the relative abundance of pIRβ in muscle and liver at T0 and at both post-CLP time points was significantly higher than abundance in untreated controls. In T0 controls, the relative abundance of pIRS-1 in muscle and of pIRS-2 in liver following insulin administration was higher than in untreated mice. However, at both post-CLP time points, the relative abundance of pIRS-1 in muscle and of pIRS-2 in liver following insulin administration was not distinguishable from the abundance in untreated mice at the same time point. Serum glucose concentration was significantly lower than T0 at 24 h., but not 48 h., post-CLP. Glucose concentration was lower following insulin administration to T0 mice but not in post-CLP animals. Serum insulin levels were significantly higher than baseline at both post-CLP time points. CONCLUSIONS CLP impaired insulin-induced tyrosine phosphorylation of both IRS-1 in muscle and IRS-2 in liver. These findings suggest that the molecular mechanism underlying CLP-induced insulin resistance involves impaired IRS-1/IRS-2 phosphorylation.
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Affiliation(s)
- Deepa Mathew
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
| | - Julia Barillas-Cerritos
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
- Pediatric Endocrinology, Metabolism and Diabetes, Winthrop Pediatrics Associates, Mineola, NY, USA
| | - Ana Nedeljkovic-Kurepa
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
| | - Mabel Abraham
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
| | - Matthew D Taylor
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Clifford S Deutschman
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA.
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA.
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
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Matouk AI, El-Daly M, Habib HA, Senousy S, Naguib Abdel Hafez SM, Kasem AW, Almalki WH, Alzahrani A, Alshehri A, Ahmed ASF. Protective effects of menthol against sepsis-induced hepatic injury: Role of mediators of hepatic inflammation, apoptosis, and regeneration. Front Pharmacol 2022; 13:952337. [PMID: 36120368 PMCID: PMC9476320 DOI: 10.3389/fphar.2022.952337] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/01/2022] [Indexed: 11/22/2022] Open
Abstract
Liver dysfunction in sepsis is a major complication that amplifies multiple organ failure and increases the risk of death. Inflammation and oxidative stress are the main mediators in the pathophysiology of sepsis. Therefore, we investigated the role of menthol, a natural antioxidant, against sepsis-induced liver injury in female Wistar rats. Sepsis was induced by cecal ligation and puncture (CLP). Menthol (100 mg/kg) was given intragastric 2 h after CLP. Blood samples and liver tissues were collected 24 h after surgery. Menthol significantly (p < 0.05) attenuated the sepsis-induced elevation in serum liver enzymes and improved the hepatic histopathological changes. Menthol treatment significantly (p < 0.05) decreased hepatic levels of tumor necrosis factor-alpha, malondialdehyde, total nitrite, and cleaved caspase-3. It restored the hepatic levels of superoxide dismutase and reduced glutathione. Additionally, menthol significantly (p < 0.05) increased hepatic levels of B-cell lymphoma 2 (Bcl-2); an anti-apoptotic factor, and proliferating cell nuclear antigen (PCNA), a biomarker of regeneration and survival. Our results showed the therapeutic potential of menthol against liver injury induced by sepsis.
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Affiliation(s)
- Asmaa I. Matouk
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
| | - Mahmoud El-Daly
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
| | - Heba A. Habib
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
| | - Shaymaa Senousy
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
| | | | - AlShaimaa W. Kasem
- Department of Histology and Cell Biology, Faculty of Medicine, Minia University, Minya, Egypt
| | - Waleed Hassan Almalki
- Department of Pharmacology and Toxicology, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Abdulaziz Alzahrani
- Department of Pharmacology and Toxicology, College of Clinical Pharmacy, AlBaha University, Al Bahah, Saudi Arabia
| | - Ahmed Alshehri
- Department of Pharmacology and Toxicology, College of Clinical Pharmacy, AlBaha University, Al Bahah, Saudi Arabia
| | - Al-Shaimaa F. Ahmed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
- *Correspondence: Al-Shaimaa F. Ahmed,
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Anter A, Ahmed ASF, Hammad ASA, Almalki WH, Abdel Hafez SMN, Kasem AW, El-Moselhy MA, Alrabia MW, Ibrahim ARN, El-Daly M. The Severity of Acute Kidney and Lung Injuries Induced by Cecal Ligation and Puncture Is Attenuated by Menthol: Role of Proliferating Cell Nuclear Antigen and Apoptotic Markers. Front Med (Lausanne) 2022; 9:904286. [PMID: 35814769 PMCID: PMC9260148 DOI: 10.3389/fmed.2022.904286] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/16/2022] [Indexed: 11/24/2022] Open
Abstract
Objective Sepsis-induced acute lung injury (ALI) and acute kidney injury (AKI) are major causes of mortality. Menthol is a natural compound that has anti-inflammatory and antioxidative actions. Since exaggerated inflammatory and oxidative stress are characteristics of sepsis, the aim of this study was to evaluate the effect of menthol against sepsis-induced mortality, ALI, and AKI. Methods The cecal ligation and puncture (CLP) procedure was employed as a model of sepsis. Rats were grouped into sham, sham-Menthol, CLP, and CLP-Menthol (100 mg/kg, p.o). Key Findings A survival study showed that menthol enhanced the survival after sepsis from 0% in septic group to 30%. Septic rats developed histological evidence of ALI and AKI. Menthol markedly suppressed sepsis induced elevation of tissue TNF-a, ameliorated sepsis-induced cleavage of caspase-3 and restored the antiapoptotic marker Bcl2. Significance We introduced a role of the proliferating cell nuclear antigen (PCNA) in these tissues with a possible link to the damage induced by sepsis. PCNA level was markedly reduced in septic animals and menthol ameliorated this effect. Our data provide novel evidence that menthol protects against organ damage and decreases mortality in experimental sepsis.
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Affiliation(s)
- Aliaa Anter
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
| | - Al-Shaimaa F. Ahmed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
- *Correspondence: Al-Shaimaa F. Ahmed,
| | - Asmaa S. A. Hammad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
| | - Waleed Hassan Almalki
- Department of Pharmacology and Toxicology, Umm Al-Qura University, Makkah, Saudi Arabia
| | | | - AlShaimaa W. Kasem
- Department of Pathology, Faculty of Medicine, Minia University, Minya, Egypt
| | - Mohamed A. El-Moselhy
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
- Department of Clinical Pharmacy and Pharmacology, Ibn Sina National College for Medical Studies, Jeddah, Saudi Arabia
| | - Mohammad W. Alrabia
- Department of Microbiology and Medical Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ahmed R. N. Ibrahim
- Department of Clinical Pharmacy, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
- Department of Biochemistry, Faculty of Pharmacy, Minia University, Minya, Egypt
| | - Mahmoud El-Daly
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minya, Egypt
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Abstract
OBJECTIVES Interventional trials on glucocorticoids in sepsis have yielded capricious results. Recent studies have identified multiple glucocorticoid receptor isoforms. The relative abundance of these isoforms in septic patients and following murine cecal ligation and puncture is unknown. The objective of this study is to determine the effects of cecal ligation and puncture on glucocorticoid receptor isoform abundance. DESIGN Determination of effects of cecal ligation and puncture on glucocorticoid receptor isoform subtype abundance in C57BL/6 mice. Examination of glucocorticoid receptor isoform abundance in tissues harvested from patients immediately after death from sepsis or nonseptic critical illness. SETTING Research laboratory. SUBJECTS C57BL/6 mice and human tissue sections from recently deceased critically ill patients. INTERVENTIONS C57BL/6 mice were subjected to cecal ligation and puncture or sham operation. Abundance of the activating glucocorticoid receptor α and the inactivating glucocorticoid receptor β isoforms was determined in mouse and human tissue using immunoblotting. Cardiac output with or without stimulation with dexamethasone was assessed using echocardiography. The expression of the gene encoding the glucocorticoid-dependent enzyme glucose-6-phosphatase was identified using polymerase chain reaction. Statistical significance (p < 0.05) was determined using analysis of variance. MEASUREMENTS AND MAIN RESULTS Results in baseline and sham operation mice were identical. At baseline, glucocorticoid receptor αA predominated in heart, lung, and skeletal muscle; abundance was decreased post cecal ligation and puncture. All glucocorticoid receptor α subtypes were identified in liver. Cecal ligation and puncture decreased the summed abundance of hepatic glucocorticoid receptor α subtypes and those of glucocorticoid receptors αA, B, and D. However, glucocorticoid receptor αC abundance was unchanged. Cecal ligation and puncture increased glucocorticoid receptor β protein abundance in the heart and lung. Relative to T0, cecal ligation and puncture decreased cardiac output and attenuated the cardiac output response to dexamethasone. Cecal ligation and puncture also decreased expression of glucose-6-phosphatase. Compared with nonseptic patients, human sepsis decreased the abundance of glucocorticoid receptor α and increased the abundance of glucocorticoid receptor β in heart and liver biopsies. CONCLUSIONS Cecal ligation and puncture altered glucocorticoid receptor α and glucocorticoid receptor β isoform expression in tissues and decreased functional responses in heart and liver. Decreases in glucocorticoid receptor α and increases in glucocorticoid receptor β might explain the diminished glucocorticoid responsiveness observed in sepsis.
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Gong S, Yan Z, Liu Z, Niu M, Fang H, Li N, Huang C, Li L, Chen G, Luo H, Chen X, Zhou H, Hu J, Yang W, Huang Q, Schnabl B, Chang P, Billiar TR, Jiang Y, Chen P. Intestinal Microbiota Mediates the Susceptibility to Polymicrobial Sepsis-Induced Liver Injury by Granisetron Generation in Mice. Hepatology 2019; 69:1751-1767. [PMID: 30506577 DOI: 10.1002/hep.30361] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 11/13/2018] [Indexed: 12/25/2022]
Abstract
Sepsis-induced liver injury is recognized as a key problem in intensive care units. The gut microbiota has been touted as an important mediator of liver disease development; however, the precise roles of gut microbiota in regulating sepsis-induced liver injury are unknown. Here, we aimed to investigate the role of the gut microbiota in sepsis-induced liver injury and the underlying mechanism. Cecal ligation and puncture (CLP) was used to induce polymicrobial sepsis and related liver injury. Fecal microbiota transplantation (FMT) was used to validate the roles of gut microbiota in these pathologies. Metabolomics analysis was performed to characterize the metabolic profile differences between sepsis-resistant (Res; survived to 7 days after CLP) and sepsis-sensitive (Sen; moribund before or approximately 24 hours after CLP) mice. Mice gavaged with feces from Sen mice displayed more-severe liver damage than did mice gavaged with feces from Res mice. The gut microbial metabolic profile between Sen and Res mice was different. In particular, the microbiota from Res mice generated more granisetron, a 5-hydroxytryptamine 3 (5-HT3 ) receptor antagonist, than the microbiota from Sen mice. Granisetron protected mice against CLP-induced death and liver injury. Moreover, proinflammatory cytokine expression by macrophages after lipopolysaccharide (LPS) challenge was markedly reduced in the presence of granisetron. Both treatment with granisetron and genetic knockdown of the 5-HT3A receptor in cells suppressed nuclear factor kappa B (NF-кB) transactivation and phosphorylated p38 (p-p38) accumulation in macrophages. Gut microbial granisetron levels showed a significantly negative correlation with plasma alanine aminotransferase (ALT)/aspartate aminotransferase (AST) levels in septic patients. Conclusion: Our study indicated that gut microbiota plays a key role in the sensitization of sepsis-induced liver injury and associates granisetron as a hepatoprotective compound during sepsis development.
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Affiliation(s)
- Shenhai Gong
- Department of Intensive Care Unit, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Zhengzheng Yan
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Zhanguo Liu
- Department of Intensive Care Unit, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Mengwei Niu
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Heng Fang
- Department of Intensive Care Unit, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Na Li
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Chenyang Huang
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China
| | - Lei Li
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China
| | - Guiming Chen
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China
| | - Haihua Luo
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China
| | - Xiaojiao Chen
- Division of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Microbiome Medicine Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Hongwei Zhou
- State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,Division of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Microbiome Medicine Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jingjuan Hu
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Wei Yang
- Microbiome Medicine Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Department of Pathology, Southern Medical University, Guangzhou, China
| | - Qiaobing Huang
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China
| | - Bernd Schnabl
- Department of Medicine, University of California San Diego, La Jolla, CA
| | - Ping Chang
- Department of Intensive Care Unit, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | | | - Yong Jiang
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Peng Chen
- Department of Intensive Care Unit, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,Microbiome Medicine Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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8
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Ramos MFDP, Monteiro de Barros ADCM, Razvickas CV, Borges FT, Schor N. Xanthine oxidase inhibitors and sepsis. Int J Immunopathol Pharmacol 2018; 32:2058738418772210. [PMID: 29786457 PMCID: PMC5967155 DOI: 10.1177/2058738418772210] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 03/08/2018] [Indexed: 12/13/2022] Open
Abstract
Xanthine oxidase activation occurs in sepsis and results in the generation of uric acid (UrAc) and reactive oxygen species (ROS). We aimed to evaluate the effect of xanthine oxidase inhibitors (XOis) in rats stimulated with lipopolysaccharide (LPS). LPS (10 mg/kg) was administered intraperitoneally (i.p.) immediately after allopurinol (Alo, 2 mg/kg) or febuxostat (Feb, 1 mg/kg) every 24 h for 3 days. To increase UrAc levels, oxonic acid (Oxo) was administered by gavage (750 mg/kg per day) for 5 days. Animals were divided into the following 10 groups (n = 6 each): (1) Control, (2) Alo, (3) Feb, (4) LPS, (5) LPSAlo, (6) LPSFeb, (7) Oxo, (8) OxoLPS, (9) OxoLPSAlo, and (10) OxoLPSFeb. Feb with or without Oxo did not aggravate sepsis. LPS administration (with or without Oxo) significantly decreased the creatinine clearance (ClCr) in LPSAlo (60%, P < 0.01) versus LPS (44%, P < 0.05) and LPSFeb (35%, P < 0.05). Furthermore, a significant increase in mortality was observed with LPSAlo (28/34, 82%) compared to LPS treatment alone (10/16, 63%) and LPSFeb (11/17, 65%, P < 0.05). In addition, increased levels of thiobarbituric acid reactive substances (TBARS), tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-10 were observed at 72 h compared to the groups that received LPS and LPSFeb with or without Oxo. In this study, coadministration of Alo in LPS-induced experimental sepsis aggravated septic shock, leading to mortality, renal function impairment, and high ROS and proinflammatory IL levels. In contrast, administration of Feb did not potentiate sepsis, probably because it did not interfere with other metabolic events.
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Affiliation(s)
- Maria Fátima de Paula Ramos
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
| | | | - Clara Versolato Razvickas
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
| | - Fernanda T Borges
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
- Universidade Cruzeiro do Sul, São Paulo,
Brazil
| | - Nestor Schor
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
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Orexinergic activity modulates altered vital signs and pituitary hormone secretion in experimental sepsis. Crit Care Med 2013; 41:e368-75. [PMID: 24105451 DOI: 10.1097/ccm.0b013e31828e9843] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Sepsis is a common, lethal poorly understood disorder affecting nearly a million Americans annually. The syndrome is characterized by altered cardiodynamics, respiration, metabolism, pituitary function, arousal, and impaired interaction among organ systems. The immunologic and endocrine systems, which are in part responsible for organ-organ communication, have been studied extensively in sepsis. However, little is known about sepsis-induced changes in central nervous system activity. HYPOTHESIS A defect in hypothalamic neurons secreting the neurotransmitter orexin modulates physiologic derangements in sepsis. DESIGN Animal study. SETTING University Research Laboratory. INTERVENTIONS Male C57Bl6 mice were made septic using cecal ligation and puncture. Data were collected 24 or 48 hours later, blood was collected, animals were killed, and brain tissue was harvested, fixed, and sectioned. Hypothalamic sections were subjected to immunohistochemistry using antibodies to orexin and c-Fos, a marker of neuronal activity. In a separate cohort of mice, cannulas were placed in the right lateral cerebral ventricle. Cecal ligation and puncture was performed 1 week later. At 24 or 48 hours post-cecal ligation and puncture, vital signs were measured, and1 µL of saline with or without 3 nmol orexin-A was infused. Vital signs were repeated at 25 or 49 hours post-cecal ligation and puncture, blood was collected, animals were killed, and brains were removed, fixed, sectioned, and stained. MEASUREMENTS AND MAIN RESULTS Orexinergic activity decreased six-fold following cecal ligation and puncture. This change was associated with decreases in arousal, temperature, and heart and respiratory rates. Levels of selected pituitary hormones increased 24 hours post-cecal ligation and puncture but were significantly lower than baseline at 48 hours. Injection of orexin-A increased vital signs to baseline levels. Hormone levels were unaffected at 25 hours but increased to supranormal levels at 49 hours. CONCLUSIONS Sepsis-induced changes in activity, vital signs, and pituitary hormones are modulated by the orexinergic system. This finding implicates central nervous system dysfunction in the pathogenesis of sepsis, suggesting further study of neurological dysfunction to identify novel approaches to management.
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What's New in Shock, November 2011? Shock 2011. [DOI: 10.1097/shk.0b013e3182361023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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