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Jeremic N, Zivkovic V, Srejovic I, Jeremic J, Petkovic A, Bradic J, Jakovljevic V. Effects of Ischemic and Proton Pump Inhibitors Preconditioning on Oxidative Stress of Isolated Rat Heart. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2018. [DOI: 10.1515/sjecr-2017-0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Aim of present study was to determine the participation of various biomarkers of oxidative damage: nitrite (NO2
−), superoxide anion radicals (O2
−), index of lipid peroxidation (TBARS) and hydrogen peroxide (H2O2) in coronary circulation after application of the different models of preconditioning such as ischemic and preconditioning with proton pump inhibitors.
Examining a biochemical markers of oxidative damage we did not notice any increased production values of any parameter, according to that we can hypothesize that possible occurrence of reperfusion injury after ischemia and PPIs preconditioning is not mediated by this mechanism.
Due to the very difficult and controversial application of ischemic preconditioning in clinical practice, the results of this study suggest that in the future proton pump inhibitors can contribute to the prevention of myocardial damage following ischemia
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Affiliation(s)
- Nevena Jeremic
- Department of Pharmaceutical chemistry, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
| | - Vladimir Zivkovic
- Department of Physiology, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
| | - Ivan Srejovic
- Department of Physiology, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
| | - Jovana Jeremic
- Department of Pharmacy, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
| | - Anica Petkovic
- Department of Pharmacy, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
| | - Jovana Bradic
- Department of Pharmacy, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
| | - Vladimir Jakovljevic
- Department of Physiology, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
- Department of Human Pathology , 1st Moscow State Medical University IM Sechenov , Moscow , Russia
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Ramos-Álvarez I, Moreno P, Mantey SA, Nakamura T, Nuche-Berenguer B, Moody TW, Coy DH, Jensen RT. Insights into bombesin receptors and ligands: Highlighting recent advances. Peptides 2015; 72:128-44. [PMID: 25976083 PMCID: PMC4641779 DOI: 10.1016/j.peptides.2015.04.026] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 04/29/2015] [Accepted: 04/30/2015] [Indexed: 12/22/2022]
Abstract
This following article is written for Prof. Abba Kastin's Festschrift, to add to the tribute to his important role in the advancement of the role of peptides in physiological, as well as pathophysiological processes. There have been many advances during the 35 years of his prominent role in the Peptide field, not only as editor of the journal Peptides, but also as a scientific investigator and editor of two volumes of the Handbook of Biological Active Peptides [146,147]. Similar to the advances with many different peptides, during this 35 year period, there have been much progress made in the understanding of the pharmacology, cell biology and the role of (bombesin) Bn receptors and their ligands in various disease states, since the original isolation of bombesin from skin of the European frog Bombina bombina in 1970 [76]. This paper will briefly review some of these advances over the time period of Prof. Kastin 35 years in the peptide field concentrating on the advances since 2007 when many of the results from earlier studies were summarized [128,129]. It is appropriate to do this because there have been 280 articles published in Peptides during this time on bombesin-related peptides and it accounts for almost 5% of all publications. Furthermore, 22 Bn publications we have been involved in have been published in either Peptides [14,39,55,58,81,92,93,119,152,216,225,226,231,280,302,309,355,361,362] or in Prof. Kastin's Handbook of Biological Active Peptides [137,138,331].
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Affiliation(s)
- Irene Ramos-Álvarez
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, MD 20892-1804, United States
| | - Paola Moreno
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, MD 20892-1804, United States
| | - Samuel A Mantey
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, MD 20892-1804, United States
| | - Taichi Nakamura
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, MD 20892-1804, United States
| | - Bernardo Nuche-Berenguer
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, MD 20892-1804, United States
| | - Terry W Moody
- Center for Cancer Research, Office of the Director, NCI, National Institutes of Health, Bethesda, MD 20892-1804, United States
| | - David H Coy
- Peptide Research Laboratory, Department of Medicine, Tulane University Health Sciences Center, New Orleans, LA 70112-2699, United States
| | - Robert T Jensen
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, MD 20892-1804, United States.
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Zhu Y, Paul P, Lee S, Craig BT, Rellinger EJ, Qiao J, Gius DR, Chung DH. Antioxidant inhibition of steady-state reactive oxygen species and cell growth in neuroblastoma. Surgery 2015; 158:827-36. [PMID: 26088922 DOI: 10.1016/j.surg.2015.03.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/23/2015] [Accepted: 03/31/2015] [Indexed: 01/26/2023]
Abstract
BACKGROUND Reactive oxygen species (ROS) contribute to adult tumorigenesis; however, their roles in pediatric solid tumors are unknown. Here, we sought to define the steady-state ROS levels in neuroblastoma and to examine whether aggressive cellular behavior, which may predict treatment failure, is regulated by ROS. METHODS Neuroblastoma sections were assessed for 4-hydroxynonenal (4-HNE), a marker of intracellular lipid peroxidation and a byproduct of increased levels of ROS. Human neuroblastoma cell lines, MYCN-amplified BE(2)-C and MYCN-nonamplified SK-N-SH, were examined in our study. Superoxide and hydroperoxide oxidation products were detected by staining for dihydroethidium (DHE) and 5, 6-carboxy-2', 7'-dichlorodihydrofluorescein diacetate (CDCFH2), using the oxidation-insensitive analog CDCF as a negative control. Cells were treated with N-acetylcysteine (NAC; 10 mmol/L) daily for 5 days and analyzed. RESULTS Greater expression of 4-HNE was observed in undifferentiated tumor sections as compared with the more differentiated tumors. Interestingly, increased levels of ROS were detected in MYCN-amplified BE(2)-C cells. Moreover, gastrin-releasing peptide receptor-induced ROS production stimulated upregulation of the hypoxia inducible factor (HIF)-1α/vascular endothelial growth factor (VEGF) pathway and an increase in cell growth. Antioxidant NAC decreased HIF-1α/VEGF expression and inhibited BE(2)-C cell growth. CONCLUSION We report a novel observation that shifting the redox balance toward greater ROS levels results in a more aggressive neuroblastoma phenotype. Our data suggest that ROS play a critical role in refractory neuroblastoma.
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Affiliation(s)
- Yueming Zhu
- Department of Radiation Oncology, Northwestern School of Medicine, Chicago, IL
| | - Pritha Paul
- Department of Pediatric Surgery, Vanderbilt University Medical Center, Nashville, TN; Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, TN
| | - Sora Lee
- Department of Pediatric Surgery, Vanderbilt University Medical Center, Nashville, TN; Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, TN
| | - Brian T Craig
- Department of Pediatric Surgery, Vanderbilt University Medical Center, Nashville, TN
| | - Eric J Rellinger
- Department of Pediatric Surgery, Vanderbilt University Medical Center, Nashville, TN
| | - Jingbo Qiao
- Department of Pediatric Surgery, Vanderbilt University Medical Center, Nashville, TN
| | - David R Gius
- Department of Radiation Oncology, Northwestern School of Medicine, Chicago, IL
| | - Dai H Chung
- Department of Pediatric Surgery, Vanderbilt University Medical Center, Nashville, TN; Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, TN.
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Oliveira PG, Grespan R, Pinto LG, Meurer L, Brenol JCT, Roesler R, Schwartsmann G, Cunha FQ, Xavier RM. Protective effect of RC-3095, an antagonist of the gastrin-releasing peptide receptor, in experimental arthritis. ACTA ACUST UNITED AC 2013; 63:2956-65. [PMID: 21953084 DOI: 10.1002/art.30486] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate the antiinflammatory effects of RC-3095 in 2 experimental models of arthritis, collagen-induced arthritis (CIA) and antigen-induced arthritis (AIA), and to determine the mechanisms of action involved. METHODS RC-3095 was administered daily to mice with CIA and mice with AIA, after induction of disease with methylated bovine serum albumin. Disease incidence and severity were assessed using a clinical index and evaluation of histologic features, respectively. In mice with CIA, gastrin-releasing peptide receptor (GRPR) was detected by immunohistochemical analysis, while in mice with AIA, migration of neutrophils, presence of glycosaminoglycans, and lymphocyte proliferation, determined using the MTT assay, were assessed. Expression of cytokines interleukin-17 (IL-17), IL-1β, and tumor necrosis factor α (TNFα) was evaluated in all mouse knees using enzyme-linked immunosorbent assay. Treg cell production was assessed by flow cytometry in the joints of mice with AIA. RESULTS In mice with AIA, administration of RC-3095 reduced neutrophil migration, mechanical hypernociception, and proteoglycan loss. These findings were associated with inhibition of the levels of all 3 proinflammatory cytokines, decreased lymphocyte proliferation, and increased Treg cell numbers. In the CIA model, treatment with RC-3095 led to a significant reduction in arthritis clinical scores and the severity of disease determined histologically. Synovial inflammation, synovial hyperplasia, pannus formation, and extensive erosive changes were all dramatically reduced in the arthritic mice treated with RC-3095. Furthermore, arthritic mice treated with RC-3095 showed a significant reduction in the concentrations of IL-17, IL-1β, and TNFα, and showed a diminished expression of GRPR. CONCLUSION These findings suggest that the GRP pathway has a significant role in chronic arthritis, and its inhibition can be explored as a possible therapeutic strategy in rheumatoid arthritis.
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Affiliation(s)
- P G Oliveira
- Hospital de Clinicas de Porto Alegre, Serviço de Reumatologia, and Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Wang W, Liu Q, Wang C, Meng Q, Kaku T, Liu K. Effects of JBP485 on the expression and function of PEPT1 in indomethacin-induced intestinal injury in rats and damage in Caco-2 cells. Peptides 2011; 32:946-55. [PMID: 21310202 DOI: 10.1016/j.peptides.2011.01.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 01/31/2011] [Accepted: 01/31/2011] [Indexed: 10/24/2022]
Abstract
To investigate the effect of JBP485 (an anti-inflammatory dipeptide) on PEPT1 in indomethacin-induced intestinal injury in rats and damage in Caco-2 cells, the activity and expression of PEPT1 were examined. The effects of treatment with indomethacin and co-treatment with JBP485 were examined in terms of intestinal histological changes, MDA and MPO levels in rats; as well as LDH-release and oxidative stress in Caco-2 cells. Uptake of glycylsarcosine (Gly-Sar) by PEPT1 was determined by in vivo, in vitro and in situ studies. RT-PCR and Western blot were used to assess the expression of PEPT1 in rat intestine and Caco-2 cells. JBP485 caused a significant decrease in MDA and MPO levels, and improved the pathological condition of rat intestine, while attenuating Caco-2 cells damage induced by indomethacin. Uptake of Gly-Sar by PEPT1 was decreased by indomethacin treatment, whereas the Gly-Sar plasma concentration was markedly increased in JBP485 co-treated rats. Indomethacin down-regulated the expression of PEPT1 mRNA and protein in rat intestine and Caco-2 cells, and the effects were reversed after administration of JBP485. These results indicated that JBP485 not only improved intestinal injury and cell damage but also partially blocked the down-regulation of PEPT1 expression and function induced by indomethacin.
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Affiliation(s)
- Wei Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
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Abstract
PURPOSE OF REVIEW This review will highlight recent advances in the understanding of mammalian bombesin receptor-related pathophysiological roles in disease states and new insights into bombesin receptor pharmacology. RECENT FINDINGS Studies regarding bombesin-like peptides and mammalian bombesin receptor functions have demonstrated significant biological impact on a broad array of physiological and pathophysiological conditions. Pharmacological experiments in vitro and in vivo as well as utilization of genetic rodent models of the gastrin-releasing peptide receptor (GRP-R/BB2) and neuromedin B receptor (NMB-R/BB1) further delineated roles in memory and fear behavior, inhibition of tumor cell growth, mediating signals for pruritus and male reproductive behavior. All three mammalian bombesin receptors were shown to possess some role in the regulation of energy balance. Novel synthesis of selective high affinity agonists and antagonists of the orphan bombesin receptor subtype-3 (BRS-3/BB3) has been accomplished and will facilitate further studies using animal model systems. SUMMARY Mammalian bombesin receptors participate in the regulation of energy homeostasis and may represent an attractive target for pharmacological treatment of obesity and certain eating disorders. Novel pharmacological insights of bombesin-like peptides and the interaction with their respective receptors have been elucidated to aid future treatment and imaging of epithelial cell-derived tumors.
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Affiliation(s)
- Ishita D Majumdar
- Section of Gastroenterology, Boston University School of Medicine, Boston, Massachusetts, USA
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Rezin GT, Petronilho FC, Araújo JH, Gonçalves CL, Daufenbach JF, Cardoso MR, Roesler R, Schwartsmann G, Dal-Pizzol F, Streck EL. Gastrin-Releasing Peptide Receptor Antagonist or N-acetylcysteine combined with Omeprazol Protect against Mitochondrial Complex II Inhibition in a Rat Model of Gastritis. Basic Clin Pharmacol Toxicol 2010; 108:214-9. [DOI: 10.1111/j.1742-7843.2010.00645.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Sood S, Muthuraman A, Gill NS, Bali M, Sharma PD. Role of 7,8-dimethoxycoumarin in anti-secretary and anti-inflammatory action on pyloric ligation-induced gastritis in rats. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2010; 12:593-9. [PMID: 20628939 DOI: 10.1080/10286020.2010.486377] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The present study was designed to investigate the effect of 7,8-dimethoxycoumarin (DMC) isolated from ethyl acetate extract of Citrus decumana peels on gastritis in rats. Isolation of 7,8-DMC from ethyl acetate extract of C. decumana peels was done by column and preparative thin layer chromatography using different solvents on polarity basis. Furthermore, effect of 7,8-DMC (50, 75, and 100 mg/kg, i.p.) in pyloric ligation-induced gastritis was studied in rats. The highest dose of 7,8-DMC showed significant decrease in the gastric volume, total acidity, ulcerative index, thiobarbituric acid reactive species levels, and myeloperoxidase activity, whereas there was an increase in the glutathione level. However, the lowest and medium doses did not produce significant results as compared to omeprazole and N-acetyl cysteine-treated groups. Compound 7,8-DMC (100 mg/kg) showed ameliorative effect on gastric inflammation and may be used as a therapeutic agent in the treatment of gastritis.
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Affiliation(s)
- Shailja Sood
- Rayat Institute of Pharmacy, Ropar, Punjab, India.
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