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Costa-Filho H, Sales T, Paula S, Nicolau L, Queiroga M, Havt A, Soares P, Barbosa A, Souza M. Role of cyclooxygenases 1 and 2 in the maintenance of colonic mucosal integrity in an experimental colitis model. Braz J Med Biol Res 2023; 56:e12946. [PMID: 37909497 PMCID: PMC10609549 DOI: 10.1590/1414-431x2023e12946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/14/2023] [Indexed: 11/03/2023] Open
Abstract
The role of cyclooxygenase (COXs) isoforms in maintaining colonic mucosal integrity is not fully understood. This study aimed to evaluate the role of COX-1 and -2 on colonic mucosal integrity in an experimental colitis model. Colitis was induced in Wistar rats by intracolonic administration of 2,4,6-trinitrobenzenesulfonic acid (20 mg + 50% ethanol). The control group (sham group) received saline only. After 7, 14, or 28 days, colonic samples were removed, and macroscopic lesion scores, wet weight, myeloperoxidase activity, and transepithelial electrical resistance (TER) were determined. In other rat groups, colonic samples from the sham group and a 7th day post-colitis group were mounted in Üssing chambers with the luminal side exposed to a buffer solution (control), acetylsalicylic acid (ASA), SC-560 (COX-1 inhibitor), or celecoxib (COX-2 inhibitor). TER and epithelial permeability to fluorescein were measured. The 7th day colitis group had higher macroscopic damage scores, wet weight, and myeloperoxidase activity and lower basal TER than the sham, 14th day colitis, and 28th day colitis groups. Inhibition of COX-1 but not COX-2 significantly decreased TER and increased permeability to fluorescein in the 7th day post-colitis group compared to the sham group. Additionally, ASA decreased the colonic mucosal integrity on day seven post-colitis compared to the sham group. A decrease in the colonic mucosa integrity in the experimental colitis model can be aggravated only by the inhibition of COX-1, which demonstrated the importance of this enzyme in the maintenance of colonic mucosal integrity.
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Affiliation(s)
- H.B. Costa-Filho
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - T.M.A.L. Sales
- Departamento de Medicina, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - S.M. Paula
- Departamento de Medicina, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - L.A.D. Nicolau
- Centro de Pesquisa em Biotecnologia e Biodiversidade, BIOTEC, Universidade Federal do Delta do Parnaíba, Parnaíba, PI, Brasil
| | - M.L. Queiroga
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - A. Havt
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - P.M.G. Soares
- Departamento de Morfologia, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - A.L.R. Barbosa
- Departamento de Fisioterapia, Universidade Federal do Delta do Parnaíba, Parnaíba, PI, Brasil
| | - M.H.L.P. Souza
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
- Departamento de Medicina, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
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Mo D, Deng C, Chen B, Ding X, Deng Q, Guo H, Chen G, Ye C, Guo C. The severity of NEC is ameliorated by prostaglandin E2 through regulating intestinal microcirculation. Sci Rep 2023; 13:13395. [PMID: 37591866 PMCID: PMC10435505 DOI: 10.1038/s41598-023-39251-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 07/21/2023] [Indexed: 08/19/2023] Open
Abstract
Prostaglandin E2 (PGE2) is implicated in intestinal inflammation and intestinal blood flow regulation with a paradoxical effect on the pathogenesis of necrotizing enterocolitis (NEC), which is not yet well understood. In the current study, we found that PGE2, EP4, and COX-2 varied at different distances from the most damaged area in the terminal ileum obtained from human infants with NEC. PGE2 administration alleviated the phenotype of experimental NEC and the intestinal microvascular features in experimental NEC, but this phenomenon was inhibited by eNOS depletion, suggesting that PGE2 promoted intestinal microcirculatory perfusion through eNOS. Furthermore, PGE2 administration increased the VEGF content in MIMECs under TNFα stress and promoted MIMEC proliferation. This response to PGE2 was involved in eNOS phosphorylation and nitric oxide (NO) production and was blocked by the EP4 antagonist in vitro, suggesting that targeting the PGE2-EP4-eNOS axis might be a potential clinical and therapeutic strategy for NEC treatment. The study is reported in accordance with ARRIVE guidelines ( https://arriveguidelines.org ).
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Affiliation(s)
- Dandan Mo
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, 439 Xuanhua Rd, Chongqing, 402160, People's Republic of China
| | - Chun Deng
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, 439 Xuanhua Rd, Chongqing, 402160, People's Republic of China
| | - Bailin Chen
- Department of General Surgery, Children's Hospital of Chongqing Medical University, 20 Jinyu Ave., Chongqing, 400014, People's Republic of China
| | - Xionghui Ding
- Department of Burn, Children's Hospital of Chongqing Medical University, 20 Jinyu Ave., Chongqing, 400014, People's Republic of China
| | - Qin Deng
- Department of Nutrition, Children's Hospital of Chongqing Medical University, 20 Jinyu Ave., Chongqing, 400014, People's Republic of China
| | - Hongjie Guo
- Department of Anesthesiology, Children's Hospital of Chongqing Medical University, 20 Jinyu Ave., Chongqing, 400014, People's Republic of China
| | - Gongli Chen
- Department of Pediatric Surgery, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, 120 Longshan Rd., Chongqing, 401147, People's Republic of China
- Department of Pediatrics, Women and Children's Hospital of Chongqing Medical University, 120 Longshan Rd., Chongqing, 401147, People's Republic of China
| | - Cuilian Ye
- School of Pharmacy and Bioengineering, Chongqing University of Technology, 69 Hongguang Ave., Chongqing, 400054, People's Republic of China.
| | - Chunbao Guo
- Department of Pediatric Surgery, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, 120 Longshan Rd., Chongqing, 401147, People's Republic of China.
- Department of Pediatrics, Women and Children's Hospital of Chongqing Medical University, 120 Longshan Rd., Chongqing, 401147, People's Republic of China.
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The interaction between intestinal bacterial metabolites and phosphatase and tensin homolog in autism spectrum disorder. Mol Cell Neurosci 2023; 124:103805. [PMID: 36592799 DOI: 10.1016/j.mcn.2022.103805] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/17/2022] [Accepted: 12/24/2022] [Indexed: 01/01/2023] Open
Abstract
Intestinal bacteria-associated para-cresyl sulfate (pCS) and 4-ethylphenyl sulfate (4EPS) are elevated in autism spectrum disorder (ASD). Both metabolites can induce ASD-like behaviors in mice, but the molecular mechanisms are not known. Phosphatase and tensin homolog (PTEN) is a susceptibility gene for ASD. The present study investigated the relation between pCS and 4EPS and PTEN in ASD in a valproic acid (VPA)-induced murine ASD model and an in vitro LPS-activated microglial model. The VPA-induced intestinal inflammation and compromised permeability in the distal ileum was not associated with changes of PTEN expression and phosphorylation. In contrast, VPA reduced PTEN expression in the hippocampus of mice. In vitro results show that pCS and 4EPS reduced PTEN expression and derailed innate immune response of BV2 microglial cells. The PTEN inhibitor VO-OHpic did not affect innate immune response of microglial cells. In conclusion, PTEN does not play a role in intestinal inflammation and compromised permeability in VPA-induced murine model for ASD. Although pCS and 4EPS reduced PTEN expression in microglial cells, PTEN is not involved in the pCS and 4EPS-induced derailed innate immune response of microglial cells. Further studies are needed to investigate the possible involvement of reduced PTEN expression in the ASD brain regarding synapse function and neuronal connectivity.
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Wawrzyniak N, Gramza-Michałowska A, Kołodziejski P, Suliburska J. Effect of calcium lactate in standard diet on selected markers of oxidative stress and inflammation in ovariectomized rats. OPEN CHEM 2022. [DOI: 10.1515/chem-2022-0236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Abstract
The effectiveness of calcium depends on its source, i.e., salt it is supplied with. This study aimed to determine the effects of calcium lactate in diet on inflammation and oxidative stress markers in ovariectomized rats. A total of 40 female Wistar rats were included in this study, which were divided into four groups. The control group was fed a standard diet, whereas the remaining three groups were ovariectomized and provided a standard diet containing calcium carbonate (OVX), a calcium-deficient diet (OVX_DEF), or a diet containing calcium lactate (OVX_CaL). The nutritional intervention lasted for 12 weeks, and then, the rats were sacrificed. Tissue and blood samples were taken and evaluated for cyclooxygenase 1 (COX-1), cyclooxygenase 2, and thiobarbituric acid reactive substance contents in the liver and serum, and total antioxidant status and lipoxygenase 1 contents only in the serum using enzyme-linked immunosorbent assay. Differences were observed in the effects of calcium carbonate and calcium lactate on the COX-1 content in the serum of ovariectomized rats: a lower COX-1 concentration was observed in the case of the calcium lactate diet. No significant differences were observed for the other parameters.
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Affiliation(s)
- Natalia Wawrzyniak
- Department of Human Nutrition and Dietetics, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31 , 60-624 Poznań , Poland
| | - Anna Gramza-Michałowska
- Department of Gastronomy Science and Functional Foods, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31 , 60-624 Poznań , Poland
| | - Paweł Kołodziejski
- Department of Animal Physiology, Biochemistry and Biostructure, Faculty of Veterinary Medicine and Animal Science, Poznań University of Life Sciences, Wojska Polskiego 28 , 60-637 Poznań , Poland
| | - Joanna Suliburska
- Department of Human Nutrition and Dietetics, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31 , 60-624 Poznań , Poland
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Mustafa G, Cai CL, Bodkin D, Aranda JV, Beharry KD. Antioxidants and/or fish oil reduce intermittent hypoxia-induced inflammation in the neonatal rat terminal ileum. Prostaglandins Other Lipid Mediat 2021; 155:106565. [PMID: 34051366 DOI: 10.1016/j.prostaglandins.2021.106565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 04/29/2021] [Accepted: 05/21/2021] [Indexed: 12/16/2022]
Abstract
Intermittent hypoxia (IH) is associated with the pathogenesis of necrotizing enterocolitis (NEC). We tested the hypothesis that early supplementation with antioxidants and/or fish oil protects the terminal ileum from oxidative injury induced by neonatal IH. Newborn rats were exposed to neonatal IH from birth (P0) until P14 during which they received daily fish oil, coenzyme Q10 (CoQ10), glutathione nanoparticles (nGSH), fish oil + CoQ10, or olive oil. Pups were then placed in room air from P14 to P21 with no further supplementation. Terminal ileum was assessed for IH-induced injury and inflammatory biomarkers. Neonatal IH induced severe damage consistent with NEC, and was associated with oxidative stress and elevations in PGE2, PGF2α, TxB2, NOS-2 and TLR-4, effects that were ameliorated with nGSH and combination CoQ10+fish oil. Early postnatal supplementation with antioxidants and/or fish oil during neonatal IH may be favorable for preserving gut integrity and reducing oxidative injury.
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Affiliation(s)
- Ghassan Mustafa
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Charles L Cai
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Darren Bodkin
- Department of Pediatrics, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Jacob V Aranda
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA; Department of Ophthalmology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Kay D Beharry
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA; Department of Ophthalmology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA.
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What's New in Shock, September 2020? Shock 2021; 54:277-279. [PMID: 32796495 DOI: 10.1097/shk.0000000000001588] [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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Jiang C, Caskurlu A, Ganesh T, Dingledine R. Inhibition of the prostaglandin EP2 receptor prevents long-term cognitive impairment in a model of systemic inflammation. Brain Behav Immun Health 2020; 8:100132. [PMID: 34589882 PMCID: PMC8474496 DOI: 10.1016/j.bbih.2020.100132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/19/2020] [Accepted: 08/19/2020] [Indexed: 12/19/2022] Open
Abstract
Long-term cognitive and affective impairments are common problems in the survivors of sepsis, which weakens their vocational and daily life ability. Neuroinflammation has been reported to exert a key role in the development of cognitive deficit in different disorders including epilepsy, Alzheimer's disease (AD) and stroke. Mice treated with lipopolysaccharide (LPS), an endotoxin produced by gram-negative bacteria, show a robust but short-lived neuroinflammation and develop long-term memory and affective problems. In this study, we test the hypothesis that pharmacological blockade of the EP2 receptor for prostaglandin E2 reduces neuroinflammation and prevents long-term affective and memory deficits in a mouse model of LPS-induced, sepsis-associated encephalopathy (SAE). Our results show that an EP2 antagonist, TG6-10-1, promotes the recovery of body weight, mitigates neuroinflammation as judged by inflammatory cytokines and microgliosis, prevents the loss of synaptic proteins, and ameliorates depression-like behavior in the sucrose preference test as well as memory loss in the novel object recognition test. Our results point to a new avenue to ameliorate neuroinflammation and long-term affective and cognition problems of sepsis survivors.
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Affiliation(s)
- Chunxiang Jiang
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, 30322, Georgia
- Department of Neurology, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Aysegul Caskurlu
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, 30322, Georgia
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, 30322, Georgia
| | - Ray Dingledine
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, 30322, Georgia
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