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Wang Y, Lin J, Yu Z, Cheng J, Cheng J, Cui W. Rigid-flexible nanocarriers loaded with active peptides for antioxidant and anti-inflammatory applications in skin. Colloids Surf B Biointerfaces 2024; 236:113772. [PMID: 38394858 DOI: 10.1016/j.colsurfb.2024.113772] [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: 12/13/2023] [Revised: 01/18/2024] [Accepted: 01/27/2024] [Indexed: 02/25/2024]
Abstract
Peptides are recognized as highly effective and safe bioactive ingredients. However, t their practical application is limited and hampered by harsh conditions for practical drug delivery. Hence, a novel peptide nanocarrier of copper peptide (GHK-Cu) encapsulation developed by liposome technology combined with the classical Chinese concept of rigidity and flexibility. Different polyols were selected as modification ligands for phospholipid bilayers to construct a nano drug-carrying system with high loading rate, good stability and biocompatibility. In vitro, this complex not only significantly retarded the release ability of copper peptides, but also enabled copper peptides to be effectively resistant to enzymatic degradation. Furthermore, cellular experiments showed that this system mainly regulates Nrf2, SIRT1, and PEG2/COX-2-related signaling pathways, thus effectively counteracting cellular inflammation, senescence, and apoptosis from oxidative damage. Interestingly, a green, non-toxic, efficient and convenient antioxidant system was developed for the prevention and deceleration of skin aging.
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Affiliation(s)
- Yan Wang
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jialiang Lin
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Zihao Yu
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jinbo Cheng
- Zhuhai Hairology Biotech Co., Ltd, Zhuhai 519000, China
| | - Jianhua Cheng
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| | - Weikang Cui
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
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Hsien Li P, Shih YJ, Lu WC, Huang PH, Wang CCR. Antioxidant, antibacterial, anti-inflammatory, and anticancer properties of Cinnamomum kanehirae Hayata leaves extracts. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Ramírez-Patiño R, Avalos-Navarro G, Figuera LE, Varela-Hernández JJ, Bautista-Herrera LA, Muñoz-Valle JF, Gallegos-Arreola MP. Influence of nitric oxide signaling mechanisms in cancer. Int J Immunopathol Pharmacol 2022; 36:3946320221135454. [PMID: 36260949 PMCID: PMC9585559 DOI: 10.1177/03946320221135454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Nitric oxide (NO) is a molecule with multiple biological functions that is involved in various pathophysiological processes such as neurotransmission and blood vessel relaxation as well as the endocrine system, immune system, growth factors, and cancer. However, in the carcinogenesis process, it has a dual behavior; at low doses, NO regulates homeostatic functions, while at high concentrations, it promotes tissue damage or acts as an agent for immune defense against microorganisms. Thus, its participation in the carcinogenic process is controversial. Cancer is a multifactorial disease that presents complex behavior. A better understanding of the molecular mechanisms associated with the initiation, promotion, and progression of neoplastic processes is required. Some hypotheses have been proposed regarding the influence of NO in activating oncogenic pathways that trigger carcinogenic processes, because NO might regulate some signaling pathways thought to promote cancer development and more aggressive tumor growth. Additionally, NO inhibits apoptosis of tumor cells, together with the deregulation of proteins that are involved in tissue homeostasis, promoting spreading to other organs and initiating metastatic processes. This paper describes the signaling pathways that are associated with cancer, and how the concentration of NO can serve a beneficial or pathological function in the initiation and promotion of neoplastic events.
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Affiliation(s)
- R Ramírez-Patiño
- Departamento de Ciencias Médicas y de la Vida, Centro Universitario de la Ciénega (CUCIÉNEGA), Universidad de Guadalajara, Ocotlán Jalisco, México
| | - G Avalos-Navarro
- Departamento de Ciencias Médicas y de la Vida, Centro Universitario de la Ciénega (CUCIÉNEGA), Universidad de Guadalajara, Ocotlán Jalisco, México
| | - LE Figuera
- División de Génetica, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara Jalisco, México,Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Guadalajara Jalisco, México
| | - JJ Varela-Hernández
- Departamento de Ciencias Médicas y de la Vida, Centro Universitario de la Ciénega (CUCIÉNEGA), Universidad de Guadalajara, Ocotlán Jalisco, México
| | - LA Bautista-Herrera
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingeniería (CUCEI), Universidad de Guadalajara, Guadalajara Jalisco, México
| | - JF Muñoz-Valle
- Instituto de Investigación en Ciencias Biomédicas (IICB), Centro Universitario de Ciencias de la Salud (CUCS) Universidad de Guadalajara, Guadalajara Jalisco, México
| | - MP Gallegos-Arreola
- División de Génetica, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara Jalisco, México,Martha Patricia Gallegos-Arreola, División de Genética CIBO, IMSS, Sierra Mojada 800, Col, Independencia, Guadalajara, Jalisco 44340, México.
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Mycotoxin Zearalenone Attenuates Innate Immune Responses and Suppresses NLRP3 Inflammasome Activation in LPS-Activated Macrophages. Toxins (Basel) 2021; 13:toxins13090593. [PMID: 34564598 PMCID: PMC8473227 DOI: 10.3390/toxins13090593] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/20/2021] [Accepted: 08/22/2021] [Indexed: 01/07/2023] Open
Abstract
Zearalenone (ZEA) is a mycotoxin that has several adverse effects on most mammalian species. However, the effects of ZEA on macrophage-mediated innate immunity during infection have not been examined. In the present study, bacterial lipopolysaccharides (LPS) were used to induce the activation of macrophages and evaluate the effects of ZEA on the inflammatory responses and inflammation-associated signaling pathways. The experimental results indicated that ZEA suppressed LPS-activated inflammatory responses by macrophages including attenuating the production of proinflammatory mediators (nitric oxide (NO) and prostaglandin E2 (PGE2)), decreased the secretion of proinflammatory cytokines (tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6), inhibited the activation of c-Jun amino-terminal kinase (JNK), p38 and nuclear factor-κB (NF-κB) signaling pathways, and repressed the nucleotide-binding and oligomerization domain (NOD)-, leucine-rich repeat (LRR)- and pyrin domain-containing protein 3 (NLRP3) inflammasome activation. These results indicated that mycotoxin ZEA attenuates macrophage-mediated innate immunity upon LPS stimulation, suggesting that the intake of mycotoxin ZEA-contaminated food might result in decreasing innate immunity, which has a higher risk of adverse effects during infection.
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Anchi P, Swamy V, Godugu C. Nimbolide exerts protective effects in complete Freund's adjuvant induced inflammatory arthritis via abrogation of STAT-3/NF-κB/Notch-1 signaling. Life Sci 2020; 266:118911. [PMID: 33333049 DOI: 10.1016/j.lfs.2020.118911] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/22/2020] [Accepted: 12/08/2020] [Indexed: 02/08/2023]
Abstract
AIM Activation of transmembrane Notch-1 receptors through inflammatory cytokines is highly regulated by STAT-3 and NF-κB phosphorylation. Nimbolide (NMB) exhibits potent anti-inflammatory, anti-fibrotic, anticancer activities by targeting various pathways. Here, we have investigated the effect of NMB in regulation of STAT-3/NF-κB/Notch-1 axis in complete Freund's adjuvant (CFA) induced inflammatory arthritis (IA) model. MAIN METHODS The anti-inflammatory and anti-arthritic activity of NMB was evaluated both in vitro (IL-1β stimulated HIG-82 synovial fibroblasts) and in vivo (CFA induced rat model of IA) models. In vitro anti-arthritic activity was assessed by anti-migratory effect, while in vivo effects were evaluated through radiological and histological analysis. The effect of NMB on STAT-3, NF-κB, Notch-1 signaling pathways and proinflammatory cytokines were studied using western blot, immunohistochemistry and ELISA methods. Key findings NMB attenuated the migration of synovial fibroblasts in vitro. It reduced the progression of arthritis as evidenced from the improved radiological and histological abnormalities in arthritic rats. NMB significantly suppressed the nitrosooxidative stress and levels of pro-inflammatory cytokines. NMB also exhibited remarkable protective activity against upregulation of MAPK, STAT-3 and NF-κB phosphorylation mediated Notch-1 signaling pathway in synovial tissue of arthritic rats. SIGNIFICANCE NMB may have clinical therapeutic value in rheumatoid arthritis by inhibiting STAT-3/NF-κB/Notch-1 axis and also by reducing the levels of proinflammatory cytokines.
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Affiliation(s)
- Pratibha Anchi
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana 500037, India
| | - Veerabhadra Swamy
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana 500037, India
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana 500037, India.
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Kumar S, Maurya VK, Nayak D, Khurana A, Manchanda RK, Gadugu S, Bhatt MLB, Saxena SK. Calcarea carbonica treatment rescues lipopolysaccharide-induced inflammatory response in human mononuclear cells via downregulation of inducible cyclooxygenase pathway. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2020; 18:441-449. [PMID: 32732109 DOI: 10.1016/j.joim.2020.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 04/28/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Prolonged use of nonsteroidal anti-inflammatory drugs is associated with severe side effects and toxicity. Therefore, we studied the anti-inflammatory role of Calcarea carbonica which had minimal toxicity at the low doses. METHODS THP-1 human mononuclear cells were treated with C. carbonica to evaluate the 50% cytotoxicity concentration (CC50) and 50% effective concentration (EC50). Cell survival was evaluated in lipopolysaccharide-stimulated C. carbonica-treated cells. Nitric oxide (NO) and tumor necrosis factor-α (TNF-α) were measured to evaluate the anti-inflammatory activity of C. carbonica. Cyclooxygenase-2 (COX-2) protein expression was determined by Western blotting analysis, and the interaction of C. carbonica with the COX-2 protein was evaluated using molecular docking simulation. RESULTS The CC50 and EC50 of C. carbonica were found to be 43.26 and 11.99 µg/mL, respectively. The cell survival assay showed a 1.192-fold (P = 0.0129), 1.443-fold (P = 0.0009) and 1.605-fold (P = 0.0004) increase in cell survival at 24, 48 and 72 h after initiating C. carbonica treatment, respectively. C. carbonica-treated cells showed a reduction in NO levels by 2.355 folds (P = 0.0001), 2.181 folds (P = 0.0001) and 2.071 folds (P = 0.0001) at 24, 48 and 72 h, respectively. The treated cells also showed a reduction in TNF-α levels by 1.395 folds (P = 0.0013), 1.541 folds (P = 0.0005) and 1.550 folds (P = 0.0005) at 24, 48 and 72 h, respectively. In addition, a 1.193-fold reduction (P = 0.0126) in COX-2 protein expression was found in C. carbonica-treated cells. The molecular docking showed interaction of C. carbonica with the phenylalanine 367 residue present in active site of Cox-2. CONCLUSION C. carbonica exhibited anti-inflammatory properties in lipopolysaccharide-stimulated cells by significantly reducing NO production and TNF-α level through downregulation of the COX-2 protein. This effect is probably mediated through interaction of C. carbonica with the phenylalanine 367 residue present in active site of Cox-2.
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Affiliation(s)
- Swatantra Kumar
- Centre for Advanced Research, Faculty of Medicine, King George's Medical University, Lucknow 226003, India
| | - Vimal K Maurya
- Centre for Advanced Research, Faculty of Medicine, King George's Medical University, Lucknow 226003, India
| | - Debadatta Nayak
- Central Council for Research in Homoeopathy, Ministry of Ayush, Janakpuri, New Delhi 110058, India
| | - Anil Khurana
- Central Council for Research in Homoeopathy, Ministry of Ayush, Janakpuri, New Delhi 110058, India
| | - Raj K Manchanda
- Central Council for Research in Homoeopathy, Ministry of Ayush, Janakpuri, New Delhi 110058, India
| | - Srinivasulu Gadugu
- Department of Medicine, Jaisoorya and Potti Sreeramulu Government Medical College, Hyderabad 500013, India
| | - Madan L B Bhatt
- Centre for Advanced Research, Faculty of Medicine, King George's Medical University, Lucknow 226003, India
| | - Shailendra K Saxena
- Centre for Advanced Research, Faculty of Medicine, King George's Medical University, Lucknow 226003, India.
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Jaén RI, Prieto P, Casado M, Martín-Sanz P, Boscá L. Post-translational modifications of prostaglandin-endoperoxide synthase 2 in colorectal cancer: An update. World J Gastroenterol 2018; 24:5454-5461. [PMID: 30622375 PMCID: PMC6319129 DOI: 10.3748/wjg.v24.i48.5454] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 11/13/2018] [Accepted: 11/16/2018] [Indexed: 02/06/2023] Open
Abstract
The biosynthesis of prostanoids is involved in both physiological and pathological processes. The expression of prostaglandin-endoperoxide synthase 2 (PTGS2; also known as COX-2) has been traditionally associated to the onset of several pathologies, from inflammation to cardiovascular, gastrointestinal and oncologic events. For this reason, the search of selective PTGS2 inhibitors has been a focus for therapeutic interventions. In addition to the classic non-steroidal anti-inflammatory drugs, selective and specific PTGS2 inhibitors, termed coxibs, have been generated and widely used. PTGS2 activity is less restrictive in terms of substrate specificity than the homeostatic counterpart PTGS1, and it accounts for the elevated prostanoid synthesis that accompanies several pathologies. The main regulation of PTGS2 occurs at the transcription level. In addition to this, the stability of the mRNA is finely regulated through the interaction with several cytoplasmic elements, ranging from specific microRNAs to proteins that control mRNA degradation. Moreover, the protein has been recognized to be the substrate for several post-translational modifications that affect both the enzyme activity and the targeting for degradation via proteasomal and non-proteasomal mechanisms. Among these modifications, phosphorylation, glycosylation and covalent modifications by reactive lipidic intermediates and by free radicals associated to the pro-inflammatory condition appear to be the main changes. Identification of these post-translational modifications is relevant to better understand the role of PTGS2 in several pathologies and to establish a correct analysis of the potential function of this protein in diseases progress. Finally, these modifications can be used as biomarkers to establish correlations with other parameters, including the immunomodulation dependent on molecular pathological epidemiology determinants, which may provide a better frame for potential therapeutic interventions.
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Affiliation(s)
- Rafael I Jaén
- Department of Metabolism and Physiopathology of Inflammatory Diseases, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid 28029, Spain
| | - Patricia Prieto
- Department of Metabolism and Physiopathology of Inflammatory Diseases, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid 28029, Spain
| | - Marta Casado
- Department of Biomedicine, Instituto de Biomedicina de Valencia (CSIC), Valencia 46010, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, y Hepáticas y Digestivas, ISCIII, Madrid 28029, Spain
| | - Paloma Martín-Sanz
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, y Hepáticas y Digestivas, ISCIII, Madrid 28029, Spain
- Unidad Asociada IIBM-ULPGC, Universidad de las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria 35001, Spain
| | - Lisardo Boscá
- Department of Metabolism and Physiopathology of Inflammatory Diseases, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid 28029, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, y Hepáticas y Digestivas, ISCIII, Madrid 28029, Spain
- Unidad Asociada IIBM-ULPGC, Universidad de las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria 35001, Spain
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Cha SH, Hwang Y, Kim KN, Jun HS. Palmitate induces nitric oxide production and inflammatory cytokine expression in zebrafish. FISH & SHELLFISH IMMUNOLOGY 2018; 79:163-167. [PMID: 29772372 DOI: 10.1016/j.fsi.2018.05.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/27/2018] [Accepted: 05/13/2018] [Indexed: 06/08/2023]
Abstract
Inflammation markers in zebrafish embryos reflect a toxic response that is common to other animal models and humans. Free fatty acids (FFAs) are known to cause damage in various tissues by inducing inflammation. In this study, we investigated whether a FFA (palmitate) induces inflammation in zebrafish embryos. Nitrous oxide (NO) production and cyclooxygenase-2 (COX-2) mRNA expression were increased in palmitate-treated zebrafish embryos in a dose-dependent manner. mRNA expression of pro-inflammatory cytokines, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF- α), were also increased. Additionally, the mRNA expression of p65 nuclear factor-kB and I-kB-α were significantly increased after palmitate-treatment. Increased reactive oxygen species (ROS) expression was observed in palmitate-treated zebrafish embryos as well as pericardial edema. Additionally, mRNA expression of pro-inflammatory cytokines were increased in zebrafish liver and pancreas fed with palmitate-contained diet. Taken together, these results indicated that palmitate increases pro-inflammatory mediators in zebrafish embryos, suggesting that zebrafish could be an alternative animal model for inflammatory disease including diabetes.
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Affiliation(s)
- Seon-Heui Cha
- College of Pharmacy, Gachon University, Incheon 21936, Republic of Korea; Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21936, Republic of Korea; Gachon Medical and Convergence Institute, Gachon Gil Medical Center, Incheon 21565, Republic of Korea
| | - Yongha Hwang
- College of Pharmacy, Gachon University, Incheon 21936, Republic of Korea; Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21936, Republic of Korea
| | - Kil-Nam Kim
- Chuncheon Center, Korea Basic Science Institute (KBSI), Chuncheon 24341, Republic of Korea
| | - Hee-Sook Jun
- College of Pharmacy, Gachon University, Incheon 21936, Republic of Korea; Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21936, Republic of Korea; Gachon Medical and Convergence Institute, Gachon Gil Medical Center, Incheon 21565, Republic of Korea.
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Silymarin and celecoxib ameliorate experimental varicocele-induced pathogenesis: evidences for oxidative stress and inflammation inhibition. Int Urol Nephrol 2018; 50:1039-1052. [DOI: 10.1007/s11255-018-1862-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 03/30/2018] [Indexed: 02/07/2023]
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Kong EY, Choi VWY, Cheng SH, Yu KN. Some properties of the signals involved in unirradiated zebrafish embryos rescuing α-particle irradiated zebrafish embryos. Int J Radiat Biol 2015; 90:1133-42. [PMID: 24913297 DOI: 10.3109/09553002.2014.932031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE The in vivo radiation-induced bystander effect (RIBE) and radiation-induced rescue effect (RIRE) induced between embryos of the zebrafish (Danio rerio) by alpha-particle irradiation were studied through the number of apoptotic signals revealed at 24 h post fertilization (hpf) through vital dye acridine orange staining. MATERIALS AND METHODS RIBE and RIRE were verified through the significant increase and decrease in apoptotic signals in the partnered bystander and irradiated embryos, respectively. RESULTS The medium transfer experiment where irradiated zebrafish embryos were rescued through immersion in the medium previously conditioned by a larger number of irradiated zebrafish embryos showed (a) the involvement of a released stress signal in the induction of RIRE, and (b) RIBE and RIRE signals had the same function. With the help of 500 μM of the specific nitric oxide (NO) scavenger cPTIO (2-(4carboxyphenyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide), NO was confirmed as an essential signaling molecule for inducing both the RIBE and RIRE. On the other hand, the treatment with 20 μM of the carbon monoxide (CO) releasing chemical CORM-3 (tricarbonylchloro(glycinato)ruthenium (II)) suppressed the manifestations of RIBE but did not suppress RIRE. CONCLUSIONS In conclusion, unirradiated zebrafish embryos need NO but not NO-induced damages to rescue α-particle irradiated zebrafish embryos.
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Affiliation(s)
- E Y Kong
- Department of Physics and Materials Science, City University of Hong Kong
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Genovese S, Epifano F, Fiorito S, Curini M, Marrelli M, Menichini F, Conforti F. Conjugation of l-NAME to prenyloxycinnamic acids improves its inhibitory effects on nitric oxide production. Bioorg Med Chem Lett 2013; 23:2933-5. [DOI: 10.1016/j.bmcl.2013.03.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 03/11/2013] [Accepted: 03/13/2013] [Indexed: 12/31/2022]
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Salvemini D, Kim SF, Mollace V. Reciprocal regulation of the nitric oxide and cyclooxygenase pathway in pathophysiology: relevance and clinical implications. Am J Physiol Regul Integr Comp Physiol 2013; 304:R473-87. [PMID: 23389111 DOI: 10.1152/ajpregu.00355.2012] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The nitric oxide (NO) and cyclooxygenase (COX) pathways share a number of similarities. Nitric oxide is the mediator generated from the NO synthase (NOS) pathway, and COX converts arachidonic acid to prostaglandins, prostacyclin, and thromboxane A(2). Two major forms of NOS and COX have been identified to date. The constitutive isoforms critically regulate several physiological states. The inducible isoforms are overexpressed during inflammation in a variety of cells, producing large amounts of NO and prostaglandins, which may underlie pathological processes. The cross-talk between the COX and NOS pathways was initially reported by Salvemini and colleagues in 1993, when they demonstrated in a series of in vitro and in vivo studies that NO activates the COX enzymes to produce increased amounts of prostaglandins. Those studies led to the concept that COX enzymes represent important endogenous "receptor" targets for amplifying or modulating the multifaceted roles of NO in physiology and pathology. Since then, numerous studies have furthered our mechanistic understanding of these interactions in pathophysiological settings and delineated potential clinical outcomes. In addition, emerging evidence suggests that the canonical nitroxidative species (NO, superoxide, and/or peroxynitrite) modulate biosynthesis of prostaglandins through non-COX-related pathways. This article provides a comprehensive state-of-the art overview in this area.
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Affiliation(s)
- Daniela Salvemini
- Department of Pharmacological and Physiological Science, Saint Louis University School of Medicine, 1402 South Grand Blvd., St. Louis, MO 63104, USA.
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Zhu Y, Zhu M, Lance P. iNOS signaling interacts with COX-2 pathway in colonic fibroblasts. Exp Cell Res 2012; 318:2116-27. [DOI: 10.1016/j.yexcr.2012.05.027] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 05/25/2012] [Accepted: 05/28/2012] [Indexed: 01/22/2023]
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