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Song Y, Mao C, Zhong Q, Zhang R, Jiang D, Sun X. Role of hydrogen sulfide in the male reproductive system. Front Endocrinol (Lausanne) 2024; 15:1377090. [PMID: 38883604 PMCID: PMC11177757 DOI: 10.3389/fendo.2024.1377090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 05/16/2024] [Indexed: 06/18/2024] Open
Abstract
As an important gas signaling molecule, hydrogen sulfide (H2S) affects multiple organ systems, including the nervous, cardiovascular, digestive, and genitourinary, reproductive systems. In particular, H2S not only regulates female reproductive function but also holds great promise in the treatment of male reproductive diseases and disorders, such as erectile dysfunction, prostate cancer, varicocele, and infertility. In this review, we summarize the relationship between H2S and male reproductive organs, including the penis, testis, prostate, vas deferens, and epididymis. As lower urinary tract symptoms have a significant impact on penile erection disorders, we also address the potential ameliorative effects of H2S in erectile dysfunction resulting from bladder disease. Additionally, we discuss the regulatory role of H2S in cavernous smooth muscle relaxation, which involves the NO/cGMP pathway, the RhoA/Rho-kinase pathway, and K+ channel activation. Recently, various compounds that can alleviate erectile dysfunction have been reported to be at least partly dependent on H2S. Therefore, understanding the role of H2S in the male reproductive system may help develop novel strategies for the clinical treatment of male reproductive system diseases.
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Affiliation(s)
- Yunjia Song
- Department of Pharmacology, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Caiyun Mao
- Department of Pharmacology, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Qing Zhong
- Department of Pharmacology, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Rong Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Deyou Jiang
- Department of Typhoid, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xutao Sun
- Department of Synopsis of the Golden Chamber, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
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Dugbartey GJ, Nanteer D, Osae I. Nitric oxide protects intestinal mucosal barrier function and prevents acute graft rejection after intestinal transplantation: A mini-review. Nitric Oxide 2024; 149:1-6. [PMID: 38806106 DOI: 10.1016/j.niox.2024.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 04/19/2024] [Accepted: 05/25/2024] [Indexed: 05/30/2024]
Abstract
Intestinal transplantation is a complex technical procedure that provides patients suffering from end-stage intestinal failure an opportunity to enjoy improved quality of life, nutrition and survival. Compared to other types of organ transplants, it is a relatively new advancement in the field of organ transplantation. Nevertheless, great advances have been made over the past few decades to the present era, including the use of ischemic preconditioning, gene therapy, and addition of pharmacological supplements to preservation solutions. However, despite these strides, intestinal transplantation is still a challenging endeavor due to several factors. Notable among them is ischemia-reperfusion injury (IRI), which results in loss of cellular integrity and mucosal barrier function. In addition, IRI causes graft failure, delayed graft function, and decreased graft and recipient survival. This has necessitated the search for novel therapeutic avenues and improved transplantation protocols to prevent or attenuate intestinal IRI. Among the many candidate agents that are being investigated to combat IRI and its associated complications, nitric oxide (NO). NO is an endogenously produced gaseous signaling molecule with several therapeutic properties. The purpose of this mini-review is to discuss IRI and its related complications in intestinal transplantation, and NO as an emerging pharmacological tool against this challenging pathological condition. i.
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Affiliation(s)
- George J Dugbartey
- Department of Pharmacology and Toxicology, School of Pharmacy, College of Health Sciences, University of Ghana, Legon, Accra, Ghana; Department of Physiology & Pharmacology, Accra College of Medicine, East Legon, Accra, Ghana; Department of Surgery, Division of Urology, London Health Sciences Center, Western University, London, Ontario, Canada; Matthew Mailing Center for Translational Transplant Studies, London Health Sciences Center, Western University, London, Ontario, Canada.
| | - Deborah Nanteer
- Department of Pharmacology and Toxicology, School of Pharmacy, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Ivy Osae
- Department of Pharmacology and Toxicology, School of Pharmacy, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
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Daskalova E, Pencheva M, Denev P. Black Chokeberry ( Aronia melanocarpa) Juice Supplementation Improves Oxidative Stress and Aging Markers in Testis of Aged Rats. Curr Issues Mol Biol 2024; 46:4452-4470. [PMID: 38785538 PMCID: PMC11119763 DOI: 10.3390/cimb46050270] [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: 03/18/2024] [Revised: 04/29/2024] [Accepted: 05/03/2024] [Indexed: 05/25/2024] Open
Abstract
Spermatogenesis is a process that continues until the end of an individual's life, although with reduced activity with advancing age. Inflammation, oxidation, and apoptosis are events considered as predictors of pathogenesis and the development of age-related diseases observed in aged testes. The use of natural compounds with antioxidant and anti-inflammatory properties has a beneficial effect on the inflammatory and oxidative status of the aged testis. The aim of this study was to determine the effect of supplementation with antioxidant-rich black chokeberry (Aronia melanocarpa) juice on several markers of oxidative stress and aging in rat testis. In total, 24 male Wistar rats were divided into three experimental groups: young controls aged 2 months, old controls aged 27 months, and 27-month-old rats supplemented with black chokeberry juice at a dose of 10 mL/kg for 3 months. A. melanocarpa juice supplementation led to reduced oxidative stress, manifested by increased immunoexpression of nNOS, eNOS, and MAS1 in the seminiferous tubules and in the Leydig cells. The morphometrically determined tubule structure data showed no significant differences between the three groups. However, the intensity of the immunoreaction for TRK-C and NT3 in Leydig cells was demonstrably higher in the supplemented old animals compared with the old controls. There was a significantly higher number of blood vessels around the seminiferous tubules in the supplemented animals compared to the old controls. These data indicate that supplementation with A. melanocarpa juice slows down aging processes in the testis and preserves the functional activity of Leydig cells.
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Affiliation(s)
- Elena Daskalova
- Department of Anatomy, Histology and Embryology, Medical Faculty, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Mina Pencheva
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Petko Denev
- Laboratory of Biologically Active Substances, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 139 Ruski Blvd., 4000 Plovdiv, Bulgaria
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Nada S, Kahaleh B, Altorok N. Genome-wide DNA methylation pattern in systemic sclerosis microvascular endothelial cells: Identification of epigenetically affected key genes and pathways. JOURNAL OF SCLERODERMA AND RELATED DISORDERS 2022; 7:71-81. [PMID: 35386944 PMCID: PMC8922681 DOI: 10.1177/23971983211033772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/13/2021] [Indexed: 02/03/2023]
Abstract
Background The etiology of systemic sclerosis is not clear, but there is evidence suggesting a critical role for epigenetic alterations in disease pathogenesis and clinical expression. We sought, in this study, to characterize the genome-wide DNA methylation signature in systemic sclerosis microvascular endothelial cells. Methods We performed a genome-wide DNA methylation study in microvascular endothelial cells derived from seven diffuse cutaneous systemic sclerosis patients compared to seven age-, sex-, and ethnicity-matched healthy controls. We paired matched samples on Illumina HumanMethylation450 (three diffuse cutaneous systemic sclerosis microvascular endothelial cells and three controls), and reproduced the results in an independent set of matched patient and controls using Illumina Infinium MethylationEPIC (four diffuse cutaneous systemic sclerosis patients and four controls) to identify differentially methylated genes. Results We identified 71,353 differentially methylated CpG sites in systemic sclerosis microvascular endothelial cells using Infinium MethylationEPIC microarray in the first group (0.081% of representative probes) and 33,170 CpG sites in the second group using HumanMethylation450 microarray (0.073% of representative probes) in diffuse cutaneous systemic sclerosis microvascular endothelial cells. Among the two groups of subjects, we identified differential methylation of 2455 CpG sites, representing 1301 genes. Most of the differentially methylated CpG sites were hypermethylated (1625 CpG), corresponding to 910 genes. Common hypermethylated genes in systemic sclerosis microvascular endothelial cells include NOS1, DNMT3A, DNMT3B, HDAC4, and ANGPT2. We also identified hypomethylation of IL17RA, CTNNA3, ICAM2, and SDK1 in systemic sclerosis microvascular endothelial cells. Furthermore, we demonstrate significant inverse correlation between DNA methylation status and gene expression in the majority of genes evaluated. Gene ontology analysis of hypermethylated genes demonstrated enrichment of genes involved in angiogenesis (p = 0.0006). Pathway analysis of hypomethylated genes includes genes involved in vascular smooth muscle contraction (p = 0.014) and adherens junctions (p = 0.013). Conclusion Our data suggest the presence of significant genome-wide DNA methylation aberrancies in systemic sclerosis microvascular endothelial cells, and identify novel affected genes and pathways in systemic sclerosis microvascular endothelial cells.
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Affiliation(s)
- Shadia Nada
- Division of Rheumatology, University of Toledo, Toledo, OH, USA,Department of Internal Medicine, University of Toledo, Toledo, OH, USA
| | - Bashar Kahaleh
- Division of Rheumatology, University of Toledo, Toledo, OH, USA,Department of Internal Medicine, University of Toledo, Toledo, OH, USA
| | - Nezam Altorok
- Division of Rheumatology, University of Toledo, Toledo, OH, USA,Department of Internal Medicine, University of Toledo, Toledo, OH, USA,Nezam Altorok, Department of Internal Medicine, University of Toledo, 3000 Arlington Avenue, Mailstop 1186, Toledo, OH 43614, USA.
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Martynov VI, Pakhomov AA. BODIPY derivatives as fluorescent reporters of molecular activities in living cells. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4985] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
Fluorescent compounds have become indispensable tools for imaging molecular activities in the living cell. 4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) is currently one of the most popular fluorescent reporters due to its unique photophysical properties. This review provides a general survey and presents a summary of recent advances in the development of new BODIPY-based cellular biomarkers and biosensors. The review starts with the consideration of the properties of BODIPY derivatives required for their application as cellular reporters. Then review provides examples of the design of sensors for different biologically important molecules, ions, membrane potential, temperature and viscosity defining the live cell status. Special attention is payed to BODPY-based phototransformable reporters.
The bibliography includes 339 references.
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Dudley RWR, Comtois AS, St-Pierre DH, Danialou G. Early administration of L-arginine in mdx neonatal mice delays the onset of muscular dystrophy in tibialis anterior (TA) muscle. FASEB Bioadv 2021; 3:639-651. [PMID: 34377959 PMCID: PMC8332474 DOI: 10.1096/fba.2020-00104] [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] [Received: 10/25/2020] [Revised: 02/17/2021] [Accepted: 04/15/2021] [Indexed: 12/04/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a genetic disorder that results in the absence of dystrophin, a cytoskeletal protein. Individuals with this disease experience progressive muscle destruction, which leads to muscle weakness. Studies have been conducted to find solutions for the relief of individuals with this disease, several of which have shown that utrophin, a protein closely related to dystrophin, when overexpressed in mdx neonatal mice (the murine model of DMD), is able to prevent the progressive muscle destruction observed in the absence of dystrophin. Furthermore, recent studies have shown that L‐arginine induces utrophin upregulation in adult mdx mice. We hypothesized that L‐arginine treatment also induces utrophin upregulation to prevent the development of muscle weakness in neonatal mdx mice. Hence, L‐arginine should also prevent progressive muscle destruction via utrophin upregulation in mdx neonatal mice. Mdx neonatal mice were injected intraperitoneally daily with 800 mg/kg of L‐arginine for 6 weeks, whereas control mice were injected with a physiological saline. The following experiments were performed on the tibialis anterior (TA) muscle: muscle contractility and resistance to mechanical stress; central nucleation and peripheral nucleation, utrophin, and creatine kinase quantification as well as a nitric oxide (NO) assay. Our findings show that early administration of L‐arginine in mdx neonatal mice prevents the destruction of the tibialis anterior (TA) muscle. However, this improvement was related to nitric oxide (NO) production rather than the expected utrophin upregulation.
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Affiliation(s)
- Roy W R Dudley
- Meakins Christie Laboratories McGill University Montreal QC Canada
| | - Alain S Comtois
- Département des Sciences de l'Activité Physique Université du Québec à Montréal (UQAM Montreal QC Canada.,Groupe de Recherche en Activité Physique Adaptée UQAM Montreal QC Canada
| | - David H St-Pierre
- Département des Sciences de l'Activité Physique Université du Québec à Montréal (UQAM Montreal QC Canada.,Groupe de Recherche en Activité Physique Adaptée UQAM Montreal QC Canada.,Centre de Recherche du CHU Sainte-Justine Montréal QC Canada
| | - Gawiyou Danialou
- Meakins Christie Laboratories McGill University Montreal QC Canada.,Département des Sciences de l'Activité Physique Université du Québec à Montréal (UQAM Montreal QC Canada.,Royal Military College Saint-Jean Saint-Jean-sur-Richelieu QC Canada
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Wang H, Liu C, He Z, Li P, Zhang W, Zhang W, Tang B. Dual-Colored Fluorescence Imaging of Mitochondrial HNO and Golgi-HNO in Mice with DILI. Anal Chem 2021; 93:6551-6558. [PMID: 33848128 DOI: 10.1021/acs.analchem.1c00742] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Drug-induced liver injury (DILI) is the most common reason for the post-marketing withdrawal of drugs. Poor understanding of the mechanisms of DILI presents a large challenge in clinical diagnosis. Previous evidences indicate a potential relationship between reactive nitrogen species (RNS) and DILI. Hence, we developed two specific probes, Golgi-HNO and Mito-HNO, for the multicolored and simultaneous in situ imaging of nitroxyl (HNO) in the Golgi apparatus and mitochondria, respectively. We discovered a significant rise in HNO levels in the livers of mice with DILI, which means that for the first time, we revealed a positive correlation between HNO levels and DILI. Based on changes in the HNO level, we also successfully explored the extent of liver damage induced by an anticarcinogen, bleomycin. In addition, we uncovered catalase was involved in HNO synthesis, which is the unprecedented function of catalase. These findings demonstrate that HNO is an ideal biomarker for DILI diagnosis, and Golgi-HNO and Mito-HNO are ideal fluorescent probes to study in situ HNO changes in various physiological and biochemical processes.
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Affiliation(s)
- Hui Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Cuifang Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Zixu He
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Ping Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Wen Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan 250014, People's Republic of China
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Saygın Y, Sivrikaya A, Akdağ T, Dursunoğlu D, Kaynar M, Abuşoğlu G, Ünlü A. Is there a relation between serum methylarginine levels and infertility? Horm Mol Biol Clin Investig 2021; 42:273-278. [PMID: 33544480 DOI: 10.1515/hmbci-2020-0083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/14/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Infertility is defined as the absence of pregnancy within the reproductive period despite regular sexual intercourse. Methylarginines are formed as a result of methylation of arginine residues in proteins and formed in three forms as asymmetric dimethyl arginine (ADMA), symmetrical dimethyl arginine (SDMA) and monomethylarginine (L-NMMA). So, here, we aimed to evaluate arginine and their derivatives levels in fertile and infertile individuals. METHODS Present study were consist of 30 oligozoospermia patients (proven by spermiogram analysis) and 30 healthy individuals with normozoospermia group who were applied to the urology department. With blood samples taken from individuals, serum methylarginine and its derivatives levels were analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Clinic data and demographic characteristics of individuals were also recorded at the same time. RESULTS The serum ADMA level (0.38 ± 0.07) of the oligozoospermia group was found to be significantly higher than the normozoospermia group (0.35 ± 0.05) (p=0.046). A positive correlation were observed between ADMA and SDMA (r=0.686, p=0.000), HArg and SDMA (r=0.611, p=0.001), citrulline and L-NMMA (r=0.595, p=0.001) in patients with oligosospermia. The increase in SDMA, arginine and HArg levels and a decrease in L-NMMA and citrulline levels were not significant as statistically. Also, the ADMA level was found to be high in individuals with low sperm concentration. CONCLUSIONS Consequently, serum ADMA levels of individuals with oligozoospermia were statistically significantly higher than those with normozoospermia. As proposal, determination of ADMA levels may be a potential biomarker parameter in terms of early diagnosis of fertility and infertility.
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Affiliation(s)
- Yasin Saygın
- Department of Medical Biochemistry, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Abdullah Sivrikaya
- Department of Medical Biochemistry, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Turan Akdağ
- Meram Vocational School, Necmettin Erbakan University, Konya, Turkey
| | - Duygu Dursunoğlu
- Department of Histology and Embryology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Mehmet Kaynar
- Department of Urology, Medical Faculty, Selcuk University, Konya, Turkey
| | - Gülsüm Abuşoğlu
- Department of Medical Laboratory Techniques, Vocational School of Health, Selcuk University, Konya, Turkey
| | - Ali Ünlü
- Department of Medical Biochemistry, Faculty of Medicine, Selcuk University, Konya, Turkey
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Moustafa A. Changes in nitric oxide, carbon monoxide, hydrogen sulfide and male reproductive hormones in response to chronic restraint stress in rats. Free Radic Biol Med 2021; 162:353-366. [PMID: 33130068 DOI: 10.1016/j.freeradbiomed.2020.10.315] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/01/2020] [Accepted: 10/22/2020] [Indexed: 02/07/2023]
Abstract
Gasotrasmitters are endogenously synthesized gaseous molecules that are engaged in cellular physiological and pathological processes. Stress influences various physiological aspects of an organism and amends a normal system's functions, including those of the reproductive system. This study aims to investigate the effect of long-term exposure to restraint stress on the male reproductive system as well as the possible impact of stress on the levels of nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S), and the expression of their producing-enzymes. In this study, rats were subjected to the restraint condition for 2 h per day and 7 days per week for 8 consecutive weeks. The results revealed decreases in the serum levels of kisspeptin-1(Kiss-1), gonadotropin-releasing hormone (GnRH), luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone and dehydroepiandrosterone sulfate (DHEA-s); however, corticosterone, gonadotropin-inhibitory hormone (GnIH), estradiol (E2) and prolactin levels increased following restraint stress. The mRNA expression levels of NO synthases (NOSs); neuronal NOS (nNOS), inducible NOS (iNOS) and H2S synthases; cystathionine-γ-lyase- (CSE), 3-mercaptopyruvate-sulfurtransferase- (3MST) and CO-producing enzyme; heme oxygenase-2 (HO-2) were upregulated in the hypothalamus of restraint rats. Testicular mRNA expression levels of endothelial NOS (eNOS), nNOS, HO-1 and HO-2 were upregulated whereas cystathionine β-synthase (CBS), CSE and 3MST expression levels were downregulated following restraint stress. Concentrations of NO increased in the testes but decreased in the semen of restraint rats. On the contrary, CO levels were reduced in the testes while they were elevated in the semen, whereas H2S concentrations decreased in both testes and semen of restraint rats. Concentrations of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX), as well as total antioxidant capacity (TAC) rose in the testes, while they declined in the semen of the restraint group. Restraint stress decreases the levels of reactive oxygen species (ROS) and malondialdehyde (MDA) in the testes while increasing them in the semen. Collectively, restraint stress negatively impacts male reproductive functions and modulates gasotransmitters producing-enzymes expression in the hypothalamus and testes.
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Affiliation(s)
- Amira Moustafa
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, 44519, Zagazig, Egypt.
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Ebrahimi KH, Gilbert-Jaramillo J, James WS, McCullagh JSO. Interferon-stimulated gene products as regulators of central carbon metabolism. FEBS J 2020; 288:3715-3726. [PMID: 33185982 PMCID: PMC8359365 DOI: 10.1111/febs.15625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/01/2020] [Accepted: 11/09/2020] [Indexed: 02/06/2023]
Abstract
In response to viral infections, the innate immune system rapidly activates expression of several interferon-stimulated genes (ISGs), whose protein and metabolic products are believed to directly interfere with the viral life cycle. Here, we argue that biochemical reactions performed by two specific protein products of ISGs modulate central carbon metabolism to support a broad-spectrum antiviral response. We demonstrate that the metabolites generated by metalloenzymes nitric oxide synthase and the radical S-adenosylmethionine (SAM) enzyme RSAD2 inhibit the activity of the housekeeping and glycolytic enzyme glyceraldehyde 3-phosphate dehydrogenase (GAPDH). We discuss that this inhibition is likely to stimulate a range of metabolic and signalling processes to support a broad-spectrum immune response. Based on these analyses, we propose that inhibiting GAPDH in individuals with deteriorated cellular innate immune response like elderly might help in treating viral diseases such as COVID-19.
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Affiliation(s)
- Kourosh H Ebrahimi
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, UK
| | - Javier Gilbert-Jaramillo
- Sir William Dunn School of Pathology, University of Oxford, UK.,Department of Physiology, Anatomy and Genetics, University of Oxford, UK
| | - William S James
- Sir William Dunn School of Pathology, University of Oxford, UK
| | - James S O McCullagh
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, UK
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Choi JH, Moon CM, Shin TS, Kim EK, McDowell A, Jo MK, Joo YH, Kim SE, Jung HK, Shim KN, Jung SA, Kim YK. Lactobacillus paracasei-derived extracellular vesicles attenuate the intestinal inflammatory response by augmenting the endoplasmic reticulum stress pathway. Exp Mol Med 2020; 52:423-437. [PMID: 32123288 PMCID: PMC7156483 DOI: 10.1038/s12276-019-0359-3] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/05/2019] [Accepted: 10/13/2019] [Indexed: 12/18/2022] Open
Abstract
Lactobacillus paracasei is a major probiotic and is well known for its anti-inflammatory properties. Thus, we investigated the effects of L. paracasei-derived extracellular vesicles (LpEVs) on LPS-induced inflammation in HT29 human colorectal cancer cells and dextran sulfate sodium (DSS)-induced colitis in C57BL/6 mice. ER stress inhibitors (salubrinal or 4-PBA) or CHOP siRNA were utilized to investigate the relationship between LpEV-induced endoplasmic reticulum (ER) stress and the inhibitory effect of LpEVs against LPS-induced inflammation. DSS (2%) was administered to male C57BL/6 mice to induce inflammatory bowel disease, and disease activity was measured by determining colon length, disease activity index, and survival ratio. In in vitro experiments, LpEVs reduced the expression of the LPS-induced pro-inflammatory cytokines IL-1α, IL-1β, IL-2, and TNFα and increased the expression of the anti-inflammatory cytokines IL-10 and TGFβ. LpEVs reduced LPS-induced inflammation in HT29 cells and decreased the activation of inflammation-associated proteins, such as COX-2, iNOS and NFκB, as well as nitric oxide. In in vivo mouse experiments, the oral administration of LpEVs also protected against DSS-induced colitis by reducing weight loss, maintaining colon length, and decreasing the disease activity index (DAI). In addition, LpEVs induced the expression of endoplasmic reticulum (ER) stress-associated proteins, while the inhibition of these proteins blocked the anti-inflammatory effects of LpEVs in LPS-treated HT29 cells, restoring the pro-inflammatory effects of LPS. This study found that LpEVs attenuate LPS-induced inflammation in the intestine through ER stress activation. Our results suggest that LpEVs have a significant effect in maintaining colorectal homeostasis in inflammation-mediated pathogenesis. Tiny vesicles released by a bacterial species found in the human gut can reduce symptoms of inflammatory bowel disease (IBD) and prevent disease progression. People with IBD have a decreased abundance of Lactobacilli bacteria in their gut, creating an imbalance that perpetuates the disease. Replenishment of this bacteria may become a valuable therapy. Chang Mo Moon at Ewha Womans University, Yoon-Keun Kim at MD Healthcare, both in Seoul, South Korea, and co-workers demonstrated how extracellular vesicles (EVs) released by Lactobacilli paracasei can actively prevent bowel inflammation. These EVs contain a mixture of proteins, nucleic acids and other biomolecules. The team administered EV to cultured human colorectal cancer cells and to mice with induced colitis. The EVs decreased pro-inflammatory protein activity and boosted levels of protective cellular membrane proteins via augmenting ER stress pathway.
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Affiliation(s)
- Ji Hyun Choi
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Chang Mo Moon
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea. .,Tissue Injury Defense Research Center, Ewha Womans University, Seoul, Republic of Korea.
| | | | | | | | - Min-Kyung Jo
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Yang Hee Joo
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Seong-Eun Kim
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Hye-Kyung Jung
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Ki-Nam Shim
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Sung-Ae Jung
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
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12
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Peng LY, Yuan M, Shi HT, Li JH, Song K, Huang JN, Yi PF, Fu BD, Shen HQ. Protective Effect of Piceatannol Against Acute Lung Injury Through Protecting the Integrity of Air-Blood Barrier and Modulating the TLR4/NF-κB Signaling Pathway Activation. Front Pharmacol 2020; 10:1613. [PMID: 32038265 PMCID: PMC6988518 DOI: 10.3389/fphar.2019.01613] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022] Open
Abstract
Acute lung injury (ALI) is a common and complex inflammatory lung syndrome with higher morbidity and mortality rate. Piceatannol (PIC) has anti-inflammation and anti-oxidant properties. The study was designed to explore the effect and the action mechanisms of PIC on lipopolysaccharide (LPS)-induced ALI. Twenty-four hours after LPS challenge, mice from different treatment groups were euthanized, and the bronchoalveolar lavage fluid (BALF) and lung tissue samples were collected. Then the degree of pulmonary edema, lung pathological changes, myeloperoxidase (MPO) activity, and the production of pro-inflammatory cytokines were detected. Additionally, the messenger RNA (mRNA) expressions associated with cell adhesion molecules and tight junction were analyzed through quantitative real-time (qRT)-PCR, and the TLR4/NF-κB activation was examined by western blot. The results showed that PIC significantly inhibited LPS-induced lung edema, histopathological damage, MPO activity, cell infiltration, and pro-inflammatory cytokines production. Moreover, PIC notably suppressed mRNA expressions associated with inflammation and cell adhesion molecules. Furthermore, PIC also alleviated LPS-induced damage of air-blood barrier through reducing the levels of total proteins in BALF and recovering the expression of occludin and ZO-1 in the lung tissues. We also found that PIC remarkably restrained the LPS-induced TLR4/NF-κB pathway activation in lung tissues. In conclusion, PIC may be potential to treat LPS-induced acute lung injury (ALI) via regulating air-blood barrier and TLR4/NF-κB signaling pathway activation.
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Affiliation(s)
- Lu-Yuan Peng
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Meng Yuan
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Hai-Tao Shi
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jing-He Li
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ke Song
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jiang-Ni Huang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Peng-Fei Yi
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ben-Dong Fu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Hai-Qing Shen
- College of Veterinary Medicine, Jilin University, Changchun, China
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13
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Visualizing Nitric oxide in mitochondria and lysosomes of living cells with N-Nitrosation of BODIPY-based fluorescent probes. Anal Chim Acta 2019; 1067:88-97. [DOI: 10.1016/j.aca.2019.03.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/15/2019] [Accepted: 03/21/2019] [Indexed: 12/31/2022]
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14
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Differential roles of hippocampal nNOS and iNOS in the control of baroreflex function in conscious rats. Brain Res 2018; 1710:109-116. [PMID: 30605625 DOI: 10.1016/j.brainres.2018.12.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/28/2018] [Accepted: 12/30/2018] [Indexed: 12/20/2022]
Abstract
The baroreflex is a prominent moment-to-moment mechanism regulating the blood pressure. The hippocampus is a limbic structure in which has been pointed out as part of central network regulating baroreflex. However, the local neurochemical mechanisms involved in control of baroreflex function are not completely understood. Thus, this study aimed to investigate the involvement of nitrergic neurotransmission present in the dorsal hippocampus in baroreflex control of heart rate in conscious rats. For this, we evaluated the effect of bilateral microinjection into the dorsal hippocampus of either the nitric oxide (NO) scavenger carboxy-PTIO, the selective neuronal nitric oxide synthase (nNOS) inhibitor Nω-Propyl-l-arginine (NPLA) or the selective inducible nitric oxide synthase (iNOS) inhibitor 1400 W in bradycardia evoked by blood pressure increases in response to intravenous infusion of phenylephrine, and tachycardia caused by blood pressure decreases evoked by intravenous infusion of sodium nitroprusside. Bilateral microinjection of carboxy-PTIO into the dorsal hippocampus decreased the baroreflex tachycardic response without affecting the reflex bradycardia. Hippocampus treatment with NPLA increased the baroreflex bradycardia gain without affecting the reflex tachycardia. Bilateral hippocampal treatment with 1400 W decreased the reflex tachycardia and increased the baroreflex bradycardic response. Overall, these findings provide evidence that hippocampal nitrergic mechanisms acting in a NOS isoform-specific manner plays a prominent role in control of baroreflex function. Indeed, the results indicate that nNOS and iNOS exerts an inhibitory influence on reflex bradycardia, whereas iNOS mediates the reflex tachycardia.
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15
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Dombernowsky NW, Ölmestig JNE, Witting N, Kruuse C. Role of neuronal nitric oxide synthase (nNOS) in Duchenne and Becker muscular dystrophies - Still a possible treatment modality? Neuromuscul Disord 2018; 28:914-926. [PMID: 30352768 DOI: 10.1016/j.nmd.2018.09.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 08/07/2018] [Accepted: 09/05/2018] [Indexed: 02/08/2023]
Abstract
Neuronal nitric oxide synthase (nNOS) is involved in nitric oxide (NO) production and suggested to play a crucial role in blood flow regulation of skeletal muscle. During activation of the muscle, NO helps attenuate the sympathetic vasoconstriction to accommodate increased metabolic demands, a phenomenon known as functional sympatholysis. In inherited myopathies such as the dystrophinopathies Duchenne and Becker muscle dystrophies (DMD and BMD), nNOS is lost from the sarcolemma. The loss of nNOS may cause functional ischemia contributing to skeletal and cardiac muscle cell injury. Effects of NO is augmented by inhibiting degradation of the second messenger cyclic guanosine monophosphate (cGMP) using sildenafil and tadalafil, both of which inhibit the enzyme phosphodiesterase 5 (PDE5). In animal models of DMD, PDE5-inhibitors prevent functional ischemia, reduce post-exercise skeletal muscle pathology and fatigue, show amelioration of cardiac muscle cell damage and increase cardiac performance. However, effect on clinical outcomes in DMD and BMD patients have been disappointing with minor effects on upper limb performance and none on ambulation. This review aims to summarize the current knowledge of nNOS function related to functional sympatholysis in skeletal muscle and studies on PDE5-inhibitor treatment in nNOS-deficient animal models and patients.
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Affiliation(s)
- Nanna W Dombernowsky
- Department of Neurology, Rigshospitalet Glostrup, University of Copenhagen, Denmark
| | - Joakim N E Ölmestig
- Department of Neurology, Neurovascular Research Unit, Herlev Gentofte Hospital, University of Copenhagen, Denmark
| | - Nanna Witting
- Department of Neurology, Rigshospitalet Glostrup, University of Copenhagen, Denmark
| | - Christina Kruuse
- Department of Neurology, Neurovascular Research Unit, Herlev Gentofte Hospital, University of Copenhagen, Denmark; PDE Research Group, Lundbeck Foundation Center for Neurovascular Research (LUCENS), Denmark.
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16
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Curtiss P, Schwager Z, Lo Sicco K, Franks AG. The clinical effects of l-arginine and asymmetric dimethylarginine: implications for treatment in secondary Raynaud's phenomenon. J Eur Acad Dermatol Venereol 2018; 33:497-503. [PMID: 30004597 PMCID: PMC6916181 DOI: 10.1111/jdv.15180] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 07/06/2018] [Indexed: 01/18/2023]
Abstract
Secondary Raynaud's phenomenon (RP) is often the sentinel clinical finding in systemic sclerosis and may precede systemic disease by several years. Altered nitric oxide metabolism plays a critical role in both fibrosis and severe secondary RP phenotypes in these patients. Increased flux through inducible nitric oxide synthase (iNOS) drives cutaneous fibrosis. Failure of flux through endothelial nitric oxide synthase (eNOS) contributes to increased vasoconstriction and decreased vasorelaxation. The underproduction of nitric oxide by eNOS is in part due to increased levels of asymmetric dimethylarginine (ADMA), an endogenous competitive inhibitor of nitric oxide synthase. The inhibitory effects of increased ADMA levels may be counteracted increasing serum l‐arginine, which is often an effective treatment strategy in these patients. As such, l‐arginine‐based therapies should be considered in managing secondary RP, particularly given their favourable safety and tolerability profile. While there is no established dosing regimen, studies of oral l‐arginine in secondary RP suggest that divided dosing may begin at 1–2 g/day and may be titrated up to 10 g/day. Conversely, primary RP is not associated with increased ADMA production which likely accounts for the failure of l‐arginine trials to show benefit in primary RP.
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Affiliation(s)
- P Curtiss
- Skin Lupus & Autoimmune Connective Tissue Section, The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, New York, NY, USA
| | - Z Schwager
- Skin Lupus & Autoimmune Connective Tissue Section, The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, New York, NY, USA
| | - K Lo Sicco
- Skin Lupus & Autoimmune Connective Tissue Section, The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, New York, NY, USA
| | - A G Franks
- Skin Lupus & Autoimmune Connective Tissue Section, The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, New York, NY, USA.,Division of Rheumatology, Department of Medicine, New York University School of Medicine, New York, NY, USA
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17
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Majzúnová M, Pakanová Z, Kvasnička P, Bališ P, Čačányiová S, Dovinová I. Age-dependent redox status in the brain stem of NO-deficient hypertensive rats. J Biomed Sci 2017; 24:72. [PMID: 28893245 PMCID: PMC5594586 DOI: 10.1186/s12929-017-0366-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 08/09/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The brain stem contains important nuclei that control cardiovascular function via the sympathetic nervous system (SNS), which is strongly influenced by nitric oxide. Its biological activity is also largely determined by oxygen free radicals. Despite many experimental studies, the role of AT1R-NAD(P)H oxidase-superoxide pathway in NO-deficiency is not yet sufficiently clarified. We determined changes in free radical signaling and antioxidant and detoxification response in the brain stem of young and adult Wistar rats during chronic administration of exogenous NO inhibitors. METHODS Young (4 weeks) and adult (10 weeks) Wistar rats were treated with 7-nitroindazole (7-NI group, 10 mg/kg/day), a specific nNOS inhibitor, with NG-nitro-L-arginine-methyl ester (L-NAME group, 50 mg/kg/day), a nonspecific NOS inhibitor, and with drinking water (Control group) during 6 weeks. Systolic blood pressure was measured by non-invasive plethysmography. Expression of genes (AT1R, AT2R, p22phox, SOD and NOS isoforms, HO-1, MDR1a, housekeeper GAPDH) was identified by real-time PCR. NOS activity was detected by conversion of [3H]-L-arginine to [3H]-L-citrulline and SOD activity was measured using UV VIS spectroscopy. RESULTS We observed a blood pressure elevation and decrease in NOS activity only after L-NAME application in both age groups. Gene expression of nNOS (youngs) and eNOS (adults) in the brain stem decreased after both inhibitors. The radical signaling pathway triggered by AT1R and p22phox was elevated in L-NAME adults, but not in young rats. Moreover, L-NAME-induced NOS inhibition increased antioxidant response, as indicated by the observed elevation of mRNA SOD3, HO-1, AT2R and MDR1a in adult rats. 7-NI did not have a significant effect on AT1R-NADPH oxidase-superoxide pathway, yet it affected antioxidant response of mRNA expression of SOD1 and stimulated total activity of SOD in young rats and mRNA expression of AT2R in adult rats. CONCLUSION Our results show that chronic NOS inhibition by two different NOS inhibitors has age-dependent effect on radical signaling and antioxidant/detoxificant response in Wistar rats. While 7-NI had neuroprotective effect in the brain stem of young Wistar rats, L-NAME- induced NOS inhibition evoked activation of AT1R-NAD(P)H oxidase pathway in adult Wistar rats. Triggering of the radical pathway was followed by activation of protective compensation mechanism at the gene expression level.
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Affiliation(s)
- Miroslava Majzúnová
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia
| | - Zuzana Pakanová
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Peter Kvasnička
- Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - Peter Bališ
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia
| | - Soňa Čačányiová
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia
| | - Ima Dovinová
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovakia.
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18
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de Oliveira GA, Cheng RYS, Ridnour LA, Basudhar D, Somasundaram V, McVicar DW, Monteiro HP, Wink DA. Inducible Nitric Oxide Synthase in the Carcinogenesis of Gastrointestinal Cancers. Antioxid Redox Signal 2017; 26:1059-1077. [PMID: 27494631 PMCID: PMC5488308 DOI: 10.1089/ars.2016.6850] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SIGNIFICANCE Gastrointestinal (GI) cancer taken together constitutes one of the most common cancers worldwide with a broad range of etiological mechanisms. In this review, we have examined the impact of nitric oxide (NO) on the etiology of colon, colorectal, gastric, esophageal, and liver cancers. Recent Advances: Despite differences in etiology, initiation, and progression, chronic inflammation has been shown to be a common element within these cancers showing interactions of numerous pathways. NO generated at the inflammatory site contributes to the initiation and progression of disease. The amount of NO generated, time, and site vary and are an important determinant of the biological effects initiated. Among the nitric oxide synthase enzymes, the inducible isoform has the most diverse range, participating in numerous carcinogenic processes. There is emerging evidence showing that inducible nitric oxide synthase (NOS2) plays a central role in the process of tumor initiation and/or development. CRITICAL ISSUES Redox inflammation through NOS2 and cyclooxygenase-2 participates in driving the mechanisms of initiation and progression in GI cancers. FUTURE DIRECTIONS Understanding the underlying mechanism involved in NOS2 activation can provide new insights into important prevention and treatment strategies. Antioxid. Redox Signal. 26, 1059-1077.
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Affiliation(s)
- Graciele Almeida de Oliveira
- 1 Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Frederick, Maryland
| | - Robert Y S Cheng
- 1 Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Frederick, Maryland
| | - Lisa A Ridnour
- 1 Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Frederick, Maryland
| | - Debashree Basudhar
- 1 Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Frederick, Maryland
| | - Veena Somasundaram
- 1 Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Frederick, Maryland
| | - Daniel W McVicar
- 1 Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Frederick, Maryland
| | - Hugo Pequeno Monteiro
- 2 Laboratório de Sinalização Celular, Universidade Federal de São Paulo , São Paulo, Brazil
| | - David A Wink
- 1 Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Frederick, Maryland
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19
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Rojas M, Lemtalsi T, Toque HA, Xu Z, Fulton D, Caldwell RW, Caldwell RB. NOX2-Induced Activation of Arginase and Diabetes-Induced Retinal Endothelial Cell Senescence. Antioxidants (Basel) 2017; 6:antiox6020043. [PMID: 28617308 PMCID: PMC5488023 DOI: 10.3390/antiox6020043] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 05/30/2017] [Accepted: 06/09/2017] [Indexed: 12/19/2022] Open
Abstract
Increases in reactive oxygen species (ROS) and decreases in nitric oxide (NO) have been linked to vascular dysfunction during diabetic retinopathy (DR). Diabetes can reduce NO by increasing ROS and by increasing activity of arginase, which competes with nitric oxide synthase (NOS) for their commons substrate l-arginine. Increased ROS and decreased NO can cause premature endothelial cell (EC) senescence leading to defective vascular repair. We have previously demonstrated the involvement of NADPH oxidase 2 (NOX2)-derived ROS, decreased NO and overactive arginase in DR. Here, we investigated their impact on diabetes-induced EC senescence. Studies using diabetic mice and retinal ECs treated with high glucose or H2O2 showed that increases in ROS formation, elevated arginase expression and activity, and decreased NO formation led to premature EC senescence. NOX2 blockade or arginase inhibition prevented these effects. EC senescence was also increased by inhibition of NOS activity and this was prevented by treatment with a NO donor. These results indicate that diabetes/high glucose-induced activation of arginase and decreases in NO bioavailability accelerate EC senescence. NOX2-generated ROS contribute importantly to this process. Blockade of NOX2 or arginase represents a strategy to prevent diabetes-induced premature EC senescence by preserving NO bioavailability.
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Affiliation(s)
- Modesto Rojas
- Vascular Biology Center, Augusta University, 1459 Laney Walker Boulevard, Augusta, GA 30912-2500, USA.
- VA Medical Center, One Freedom Way, Augusta, GA 30904-6285, USA.
| | - Tahira Lemtalsi
- Vascular Biology Center, Augusta University, 1459 Laney Walker Boulevard, Augusta, GA 30912-2500, USA.
- VA Medical Center, One Freedom Way, Augusta, GA 30904-6285, USA.
| | - Haroldo A Toque
- Department of Pharmacology & Toxicology, Augusta University, 1459 Laney Walker, Boulevard, Augusta, GA 30912-2500, USA.
| | - Zhimin Xu
- Vascular Biology Center, Augusta University, 1459 Laney Walker Boulevard, Augusta, GA 30912-2500, USA.
- VA Medical Center, One Freedom Way, Augusta, GA 30904-6285, USA.
| | - David Fulton
- Vascular Biology Center, Augusta University, 1459 Laney Walker Boulevard, Augusta, GA 30912-2500, USA.
- Department of Pharmacology & Toxicology, Augusta University, 1459 Laney Walker, Boulevard, Augusta, GA 30912-2500, USA.
| | - Robert William Caldwell
- Department of Pharmacology & Toxicology, Augusta University, 1459 Laney Walker, Boulevard, Augusta, GA 30912-2500, USA.
| | - Ruth B Caldwell
- Vascular Biology Center, Augusta University, 1459 Laney Walker Boulevard, Augusta, GA 30912-2500, USA.
- VA Medical Center, One Freedom Way, Augusta, GA 30904-6285, USA.
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20
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Rajfer RA, Kilic A, Neviaser AS, Schulte LM, Hlaing SM, Landeros J, Ferrini MG, Ebramzadeh E, Park SH. Enhancement of fracture healing in the rat, modulated by compounds that stimulate inducible nitric oxide synthase: Acceleration of fracture healing via inducible nitric oxide synthase. Bone Joint Res 2017; 6:90-97. [PMID: 28188129 PMCID: PMC5331177 DOI: 10.1302/2046-3758.62.bjr-2016-0164.r2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 11/28/2016] [Indexed: 11/20/2022] Open
Abstract
Objectives We investigated the effects on fracture healing of two up-regulators of inducible nitric oxide synthase (iNOS) in a rat model of an open femoral osteotomy: tadalafil, a phosphodiesterase inhibitor, and the recently reported nutraceutical, COMB-4 (consisting of L-citrulline, Paullinia cupana, ginger and muira puama), given orally for either 14 or 42 days. Materials and Methods Unilateral femoral osteotomies were created in 58 male rats and fixed with an intramedullary compression nail. Rats were treated daily either with vehicle, tadalafil or COMB-4. Biomechanical testing of the healed fracture was performed on day 42. The volume, mineral content and bone density of the callus were measured by quantitative CT on days 14 and 42. Expression of iNOS was measured by immunohistochemistry. Results When compared with the control group, the COMB-4 group exhibited 46% higher maximum strength (t-test, p = 0.029) and 92% higher stiffness (t-test, p = 0.023), but no significant changes were observed in the tadalafil group. At days 14 and 42, there was no significant difference between the three groups with respect to callus volume, mineral content and bone density. Expression of iNOS at day 14 was significantly higher in the COMB-4 group which, as expected, had returned to baseline levels at day 42. Conclusion This study demonstrates an enhancement in fracture healing by an oral natural product known to augment iNOS expression. Cite this article: R. A. Rajfer, A. Kilic, A. S. Neviaser, L. M. Schulte, S. M. Hlaing, J. Landeros, M. G. Ferrini, E. Ebramzadeh, S-H. Park. Enhancement of fracture healing in the rat, modulated by compounds that stimulate inducible nitric oxide synthase: Acceleration of fracture healing via inducible nitric oxide synthase. Bone Joint Res 2017:6:–97. DOI: 10.1302/2046-3758.62.BJR-2016-0164.R2.
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Affiliation(s)
- R A Rajfer
- Department of Orthopaedic Surgery, George Washington University, Washington DC, USA
| | - A Kilic
- Department of Orthopaedics, School of Medicine, Bahcesehir University, Istanbul, Turkey
| | - A S Neviaser
- Department of Orthopaedic Surgery, George Washington University, Washington DC, USA
| | - L M Schulte
- Department of Orthopaedic Surgery, George Washington University, Washington DC, USA
| | - S M Hlaing
- Department of Health and Life Sciences, College of Science and Health, Charles Drew University of Medicine and Science, Los Angeles, California, USA
| | - J Landeros
- Department of Health and Life Sciences, College of Science and Health, Charles Drew University of Medicine and Science, Los Angeles, California, USA
| | - M G Ferrini
- Department of Health and Life Sciences, College of Science and Health, Charles Drew University of Medicine and Science, Los Angeles, California, USA
| | - E Ebramzadeh
- Department of Orthopaedic Surgery, The J. Vernon Luck, Sr., M.D. Orthopaedic Research Center, Orthopaedic Institute for Children, University of California, Los Angeles, California, USA
| | - S-H Park
- Department of Orthopaedic Surgery, The J. Vernon Luck, Sr., M.D. Orthopaedic Research Center, Orthopaedic Institute for Children, University of California, Los Angeles, California, USA
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21
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Tang J, Guo Z, Zhang Y, Bai B, Zhu WH. Rational design of a fast and selective near-infrared fluorescent probe for targeted monitoring of endogenous nitric oxide. Chem Commun (Camb) 2017; 53:10520-10523. [DOI: 10.1039/c7cc05971j] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We developed a fast and selective near-infrared (NIR) fluorescent probe for the targeted tracing of endogenous NO which possesses vital features including a significant turn-on NIR response, high specificity, and a fast response.
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Affiliation(s)
- Junma Tang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
| | - Zhiqian Guo
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
| | - Yutao Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
| | - Bing Bai
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
| | - Wei-Hong Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
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22
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Zhu X, Chen JQ, Ma C, Liu X, Cao XP, Zhang H. A ratiometric mitochondria-targeting two-photon fluorescent probe for imaging of nitric oxide in vivo. Analyst 2017; 142:4623-4628. [DOI: 10.1039/c7an01461a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A two-photon ratiometric fluorescent probe (Mito-N) has been developed for monitoring mitochondrial nitric oxide (NO) in vivo.
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Affiliation(s)
- Xinyue Zhu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Jin-Quan Chen
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Chen Ma
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Xiaoyan Liu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Xiao-Ping Cao
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Haixia Zhang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
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Argon Induces Protective Effects in Cardiomyocytes during the Second Window of Preconditioning. Int J Mol Sci 2016; 17:ijms17071159. [PMID: 27447611 PMCID: PMC4964531 DOI: 10.3390/ijms17071159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 06/29/2016] [Accepted: 07/08/2016] [Indexed: 12/23/2022] Open
Abstract
Increasing evidence indicates that argon has organoprotective properties. So far, the underlying mechanisms remain poorly understood. Therefore, we investigated the effect of argon preconditioning in cardiomyocytes within the first and second window of preconditioning. Primary isolated cardiomyocytes from neonatal rats were subjected to 50% argon for 1 h, and subsequently exposed to a sublethal dosage of hypoxia (<1% O2) for 5 h either within the first (0–3 h) or second window (24–48 h) of preconditioning. Subsequently, the cell viability and proliferation was measured. The argon-induced effects were assessed by evaluation of mRNA and protein expression after preconditioning. Argon preconditioning did not show any cardioprotective effects in the early window of preconditioning, whereas it leads to a significant increase of cell viability 24 h after preconditioning compared to untreated cells (p = 0.015) independent of proliferation. Argon-preconditioning significantly increased the mRNA expression of heat shock protein (HSP) B1 (HSP27) (p = 0.048), superoxide dismutase 2 (SOD2) (p = 0.001), vascular endothelial growth factor (VEGF) (p < 0.001) and inducible nitric oxide synthase (iNOS) (p = 0.001). No difference was found with respect to activation of pro-survival kinases in the early and late window of preconditioning. The findings provide the first evidence of argon-induced effects on the survival of cardiomyocytes during the second window of preconditioning, which may be mediated through the induction of HSP27, SOD2, VEGF and iNOS.
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Lee D, Imm JY. AMP Kinase Activation and Inhibition of Nuclear Factor-Kappa B (NF-κB) Translocation Contribute to the Anti-Inflammatory Effect of Tricin. J Food Biochem 2016. [DOI: 10.1111/jfbc.12293] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Dabeen Lee
- Department of Foods and Nutrition; Kookmin University; 861-1, Jeongnung-dong Seongbuk-gu Seoul 136-702 Korea
| | - Jee-Young Imm
- Department of Foods and Nutrition; Kookmin University; 861-1, Jeongnung-dong Seongbuk-gu Seoul 136-702 Korea
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Gonzaga NA, Batistela MR, Padovan D, de Martinis BS, Tirapelli CR, Padovan CM. Ethanol withdrawal induces anxiety-like effects: Role of nitric oxide synthase in the dorsal raphe nucleus of rats. Alcohol 2016; 52:1-8. [PMID: 27139232 DOI: 10.1016/j.alcohol.2016.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 12/30/2015] [Accepted: 02/04/2016] [Indexed: 01/04/2023]
Abstract
Nitric oxide (NO) mediated transmission in the dorsal raphe nucleus (DRN) has been shown to be involved in the modulation of anxiety-like behaviors. We investigated whether inhibition of nitric oxide synthase (NOS) in the DRN would prevent anxiety-like behavior induced by ethanol withdrawal. Male Wistar rats were treated with ethanol 2-6% (v/v) for a period of 21 days. Ethanol withdrawal was induced by abrupt discontinuation of the treatment. Experiments were performed 48 h after ethanol discontinuation. Rats with a guide cannula aimed at the DRN received intra-DRN injections of the non-selective NOS inhibitor NG-nitro-l-arginine methyl ester (l-NAME), selective neuronal NOS (nNOS) inhibitor N(ω)-propyl-l-arginine (NPLA), or selective inhibitor of inducible NOS (iNOS) N-([3-(aminomethyl)phenyl] methyl) ethanimidamidedihydrochloride (1400W). Five minutes later, the animals were tested in the elevated plus maze (EPM). Plasma ethanol levels were determined by gas chromatography. There was a reduction in plasma ethanol levels 48 h after ethanol withdrawal. Rats from the ethanol withdrawal group showed decreased exploration of the open arms of the EPM with no change in the exploration of enclosed arms. Intra-DRN treatment with l-NAME (100 nmoles/0.2 μL) and 1400W (1 nmol/0.2 μL), but not NPLA (10 nmoles/0.2 μL) in the DRN attenuated the decrease in the exploration of the open arms of the EPM induced by ethanol withdrawal. The major new finding of the present study is that iNOS in the DRN plays a role in the anxiety-like behavior induced by ethanol withdrawal.
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Affiliation(s)
- Natália Almeida Gonzaga
- Laboratório de Neurobiologia do Estresse e da Depressão, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-901 Ribeirão Preto, SP, Brazil; Programa de Pós-graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-900, Ribeirão Preto SP, Brazil
| | - Melissa Resende Batistela
- Laboratório de Neurobiologia do Estresse e da Depressão, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-901 Ribeirão Preto, SP, Brazil
| | - Diego Padovan
- Laboratório de Neurobiologia do Estresse e da Depressão, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-901 Ribeirão Preto, SP, Brazil
| | - Bruno Spinosa de Martinis
- Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-901 Ribeirão Preto, SP, Brazil
| | - Carlos Renato Tirapelli
- Programa de Pós-graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-900, Ribeirão Preto SP, Brazil; Escola de Enfermagem de Ribeirão Preto - Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-902 Ribeirão Preto, SP, Brazil; Instituto de Neurociências e Comportamento (INeC), Avenida Bandeirantes, 3900, 14049-901 Ribeirão Preto, SP, Brazil
| | - Cláudia Maria Padovan
- Laboratório de Neurobiologia do Estresse e da Depressão, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-901 Ribeirão Preto, SP, Brazil; Instituto de Neurociências e Comportamento (INeC), Avenida Bandeirantes, 3900, 14049-901 Ribeirão Preto, SP, Brazil; Núcleo de Pesquisa em Neurobiologia das Emoções (NUPNE), Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Cidade Universitária, 14040-900 Ribeirão Preto, SP, Brazil.
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Zídek Z, Kverka M, Dusilová A, Kmoníčková E, Jansa P. Dual inhibition of nitric oxide and prostaglandin E2 production by polysubstituted 2-aminopyrimidines. Nitric Oxide 2016; 57:48-56. [PMID: 27133739 DOI: 10.1016/j.niox.2016.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 04/11/2016] [Accepted: 04/25/2016] [Indexed: 12/27/2022]
Abstract
The present in vitro experiments demonstrate inhibitory effects of polysubstituted 2-aminopyrimidines on high output production of nitric oxide (NO) and prostaglandin E2 (PGE2) stimulated by interferon-γ and lipopolysaccharide (LPS) in peritoneal macrophages of mouse and rat origin. PGE2 production was inhibited also in LPS-activated human peripheral blood mononuclear cells. A tight dependence of the suppressive activities on chemical structure of pyrimidines was observed. Derivatives containing hydroxyl groups at the C-4 and C-6 positions of pyrimidine ring were devoid of any influence on NO and PGE2. Remarkable inhibitory potential was acquired by the replacement of hydroxyl groups with chlorine, the 4,6-dichloro derivatives being more effective than the monochloro analogues. The effects were further intensified by modification of the amino group at the C-2 position, changing it to the (N,N-dimethylamino)methyleneamino or the formamido ones. There was no substantial difference in the expression of NO-inhibitory effects among derivatives containing distinct types of substituents at the C-5 position (hydrogen, methyl, ethyl, propyl, butyl, phenyl, and benzyl). In contrast to NO, larger substituents then methyl were required to inhibit PGE2 production. Overall, no significant correlation between the extent of NO and PGE2 suppression was observed. The IC50s of derivatives with the strongest effects on both NO and PGE2 were within the range of 2-10 μM. Their NO-inhibitory potential of pyrimidines was stronger than that of non-steroidal anti-inflammatory drugs (NSAIDs) aspirin and indomethacin. The PGE2-inhibitory effectiveness of pyrimidines was about the same as that of aspirin, but weaker as compared to indomethacin. The NO- and PGE2-inhibitory activity of tested pyrimidines has been found associated with decreased expression of iNOS mRNA and COX-2 mRNA, respectively, and with post-translation interactions. Selected NO-/PGE2-inhibitory derivatives decreased severity of intestinal inflammation in murine model of ulcerative colitis.
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Affiliation(s)
- Zdeněk Zídek
- Institute of Experimental Medicine, The Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic.
| | - Miloslav Kverka
- Institute of Experimental Medicine, The Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic; Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - Adéla Dusilová
- Institute of Experimental Medicine, The Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic; Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - Eva Kmoníčková
- Institute of Experimental Medicine, The Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - Petr Jansa
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo nám. 2, 16610, Prague 6, Czech Republic
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Abstract
The purpose of this study was to evaluate the effects of polydatin (PD) on cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) expressions at protein and transcriptional levels, as well as the production of prostaglandin E2 (PGE2) and nitric oxide (NO) in lipopolysaccharide (LPS)-induced macrophage RAW 264.7 cells. To elucidate the underlying mechanism responsible for these symptoms, we investigated the phosphorylation of mitogen-activated protein kinase (MAPK) pathway and nuclear factor-κB (NF-κB) expression. NO was analyzed with the Griess method. PGE2 was measured by enzyme-linked immunosorbent assay (ELISA). iNOS and COX-2 messenger RNA (mRNA) were identified by qPCR assay. iNOS, COX-2, NF-κB, extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 protein expressions were detected with Western blot. The results revealed that PD effectively inhibited NO and PGE2 production, and it is not surprising that PD reduced iNOS and COX-2 expression at protein and transcriptional levels. Additionally, PD significantly ameliorated the activation of NF-κB and the phosphorylation of MAPKs in LPS-induced RAW 264.7 macrophages. These findings suggested that PD exerted potent anti-inflammatory activity in macrophages.
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Dong D, Reece EA, Lin X, Wu Y, AriasVillela N, Yang P. New development of the yolk sac theory in diabetic embryopathy: molecular mechanism and link to structural birth defects. Am J Obstet Gynecol 2016; 214:192-202. [PMID: 26432466 PMCID: PMC4744545 DOI: 10.1016/j.ajog.2015.09.082] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 09/18/2015] [Accepted: 09/22/2015] [Indexed: 12/12/2022]
Abstract
Maternal diabetes mellitus is a significant risk factor for structural birth defects, including congenital heart defects and neural tube defects. With the rising prevalence of type 2 diabetes mellitus and obesity in women of childbearing age, diabetes mellitus-induced birth defects have become an increasingly significant public health problem. Maternal diabetes mellitus in vivo and high glucose in vitro induce yolk sac injuries by damaging the morphologic condition of cells and altering the dynamics of organelles. The yolk sac vascular system is the first system to develop during embryogenesis; therefore, it is the most sensitive to hyperglycemia. The consequences of yolk sac injuries include impairment of nutrient transportation because of vasculopathy. Although the functional relationship between yolk sac vasculopathy and structural birth defects has not yet been established, a recent study reveals that the quality of yolk sac vasculature is related inversely to embryonic malformation rates. Studies in animal models have uncovered key molecular intermediates of diabetic yolk sac vasculopathy, which include hypoxia-inducible factor-1α, apoptosis signal-regulating kinase 1, and its inhibitor thioredoxin-1, c-Jun-N-terminal kinases, nitric oxide, and nitric oxide synthase. Yolk sac vasculopathy is also associated with abnormalities in arachidonic acid and myo-inositol. Dietary supplementation with fatty acids that restore lipid levels in the yolk sac lead to a reduction in diabetes mellitus-induced malformations. Although the role of the human yolk in embryogenesis is less extensive than in rodents, nevertheless, human embryonic vasculogenesis is affected negatively by maternal diabetes mellitus. Mechanistic studies have identified potential therapeutic targets for future intervention against yolk sac vasculopathy, birth defects, and other complications associated with diabetic pregnancies.
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Affiliation(s)
- Daoyin Dong
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - E Albert Reece
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
| | - Xue Lin
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Yanqing Wu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Natalia AriasVillela
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Peixin Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD.
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Little R, Cartwright EJ, Neyses L, Austin C. Plasma membrane calcium ATPases (PMCAs) as potential targets for the treatment of essential hypertension. Pharmacol Ther 2016; 159:23-34. [PMID: 26820758 DOI: 10.1016/j.pharmthera.2016.01.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The incidence of hypertension, the major modifiable risk factor for cardiovascular disease, is increasing. Thus, there is a pressing need for the development of new and more effective strategies to prevent and treat hypertension. Development of these relies on a continued evolution of our understanding of the mechanisms which control blood pressure (BP). Resistance arteries are important in the regulation of total peripheral resistance and BP; changes in their structure and function are strongly associated with hypertension. Anti-hypertensives which both reduce BP and reverse changes in resistance arterial structure reduce cardiovascular risk more than therapies which reduce BP alone. Hence, identification of novel potential vascular targets which modify BP is important. Hypertension is a multifactorial disorder which may include a genetic component. Genome wide association studies have identified ATP2B1, encoding the calcium pump plasma membrane calcium ATPase 1 (PMCA1), as having a strong association with BP and hypertension. Knockdown or reduced PMCA1 expression in mice has confirmed a physiological role for PMCA1 in BP and resistance arterial regulation. Altered expression or inhibition of PMCA4 has also been shown to modulate these parameters. The mechanisms whereby PMCA1 and 4 can modulate vascular function remain to be fully elucidated but may involve regulation of intracellular calcium homeostasis and/or comprise a structural role. However, clear physiological links between PMCA and BP, coupled with experimental studies directly linking PMCA1 and 4 to changes in BP and arterial function, suggest that they may be important targets for the development of new pharmacological modulators of BP.
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Affiliation(s)
- Robert Little
- The Institute of Cardiovascular Sciences, The University of Manchester, UK
| | | | - Ludwig Neyses
- The Institute of Cardiovascular Sciences, The University of Manchester, UK
| | - Clare Austin
- Faculty of Health and Social Care, Edge Hill University, UK.
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Iwakiri Y. Nitric oxide in liver fibrosis: The role of inducible nitric oxide synthase. Clin Mol Hepatol 2015; 21:319-25. [PMID: 26770919 PMCID: PMC4712158 DOI: 10.3350/cmh.2015.21.4.319] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Accepted: 11/14/2015] [Indexed: 12/16/2022] Open
Abstract
The inducible form of nitric oxide synthase (iNOS) is expressed in hepatic cells in pathological conditions. Its induction is involved in the development of liver fibrosis, and thus iNOS could be a therapeutic target for liver fibrosis. This review summarizes the role of iNOS in liver fibrosis, focusing on 1) iNOS biology, 2) iNOS-expressing liver cells, 3) iNOS-related therapeutic strategies, and 4) future directions.
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Affiliation(s)
- Yasuko Iwakiri
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, USA
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31
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Kaur R, Gupta V, Christopher A, Bansal P. Potential pathways of pesticide action on erectile function – A contributory factor in male infertility. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2015. [DOI: 10.1016/j.apjr.2015.07.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Miao J, Huo Y, Lv X, Li Z, Cao H, Shi H, Shi Y, Guo W. Fast-response and highly selective fluorescent probes for biological signaling molecule NO based on N-nitrosation of electron-rich aromatic secondary amines. Biomaterials 2015; 78:11-9. [PMID: 26630612 DOI: 10.1016/j.biomaterials.2015.11.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/05/2015] [Accepted: 11/06/2015] [Indexed: 12/01/2022]
Abstract
Nitric oxide (NO) is a ubiquitous biological messenger molecule, and plays the active roles in the regulation of various physiological processes. Although numerous NO fluorescent probes have also been successfully developed in the past ten years, it still remains challenging to increase the response rate for NO while having the high selectivity and sensitivity. In this work, a simple N-nitrosation reaction of the electron-rich aromatic secondary amine with NO under aerobic condition has been utilized for the first time to construct fluorescent probe for NO. The resulting probe 1, containing a N-benzyl-4-hydroxyaniline moiety as reaction group and a BODIPY dye as fluorescence reporter, could detect NO with the fast fluorescence off-on response (within seconds), high sensitivity (nM level), and excellent selectivity over various reactive oxygen species (ROS) as well as dehydroascorbic acid (DHA), ascorbic acid (AA), and methylglyoxal (MGO). Even in the presence of glutathione (GSH, a high reactive biothiol for NO), the probe still works well for NO. Further, a mitochondria-targetable probe 2 was exploited by introducing a targeted triphenylphosphonium cation into probe 1 scaffold. It's excellent NO sensing performance as well as its ability to specifically target mitochondria and image NO there have been nicely demonstrated. With the two probes, the basal and stimulation-induced NO in RAW264.7 murine macrophages as well as the endogenous NO in endothelial cells after oxygen-glucose deprivation (OGD) have been successfully visualized.
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Affiliation(s)
- Junfeng Miao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Yingying Huo
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Xin Lv
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Zhe Li
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Hualiang Cao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Heping Shi
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Yawei Shi
- Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Wei Guo
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
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Synthesis, Bioactivity Evaluation, and Toxicity Assessment of Novel Salicylanilide Ester Derivatives as Cercaricides against Schistosoma japonicum and Molluscicides against Oncomelania hupensis. Antimicrob Agents Chemother 2015; 60:323-31. [PMID: 26503661 DOI: 10.1128/aac.01539-15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/20/2015] [Indexed: 11/20/2022] Open
Abstract
A series of novel salicylanilide ester derivatives were synthesized, characterized, and evaluated for cercaricidal potential against Schistosoma japonicum and molluscicidal potential against Oncomelania hupensis. Four derivatives exhibited remarkable cercaricidal activity superior to that of niclosamide. Among them, the most active compound, 4-chloro-2-((2-methoxy-4-nitrophenyl)carbamoyl)phenyl 4-methoxybenzoate (compound 4c), showed a marked minimum effective cercaricidal concentration as low as 0.43 μM and significant molluscicidal activity, with a 50% lethal concentration (LC50) of 0.206 g/m(2). Particularly, compound 4c displayed 88-fold decreased fish toxicity on Danio rerio and 44-fold reduced cytotoxicity on human kidney HEK293 cells in comparison with the toxicity of niclosamide. The results indicated that 4c could serve as a promising drug candidate, with environmental safety properties, against Schistosoma japonicum at transmission stages. The preliminary molecular mechanism of target compounds in Schistosoma japonicum cercariae was also investigated. Salicylanilide ester derivatives exhibited an inhibitory effect on nitric oxide synthase (NOS) but no effect on lactate dehydrogenase (LDH) and acetylcholinesterase (AChE), and a strong and significant correlation between NOS inhibitory efficacy and cercaricidal activity was observed. In addition, 4c could downregulate the expression of NOS in a dose-dependent manner. These results suggested that NOS was probably one of the drug targets of salicylanilide esters.
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Ruginsk SG, Mecawi ADS, da Silva MP, Reis WL, Coletti R, de Lima JBM, Elias LLK, Antunes-Rodrigues J. Gaseous modulators in the control of the hypothalamic neurohypophyseal system. Physiology (Bethesda) 2015; 30:127-38. [PMID: 25729058 DOI: 10.1152/physiol.00040.2014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Nitric oxide (NO), carbon monoxide (CO), and hydrogen sulfide (H2S) are gaseous molecules produced by the brain. Within the hypothalamus, gaseous molecules have been highlighted as autocrine and paracrine factors regulating endocrine function. Therefore, in the present review, we briefly discuss the main findings linking NO, CO, and H2S to the control of body fluid homeostasis at the hypothalamic level, with particular emphasis on the regulation of neurohypophyseal system output.
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Affiliation(s)
- Silvia Graciela Ruginsk
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil; and
| | - Andre de Souza Mecawi
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil; and
| | - Melina Pires da Silva
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil; and
| | - Wagner Luis Reis
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil; and Physiology Department, Georgia Regents University, Augusta, Georgia
| | - Ricardo Coletti
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil; and
| | | | - Lucila Leico Kagohara Elias
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil; and
| | - Jose Antunes-Rodrigues
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil; and
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Nagpal L, Panda K. Characterization of calmodulin-free murine inducible nitric-oxide synthase. PLoS One 2015; 10:e0121782. [PMID: 25822458 PMCID: PMC4379030 DOI: 10.1371/journal.pone.0121782] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 02/04/2015] [Indexed: 01/17/2023] Open
Abstract
Nitric-Oxide Synthase (NOS), that produces the biological signal molecule Nitric-Oxide (NO), exists in three different isoforms called, neuronal (nNOS), endothelial (eNOS) and inducible (iNOS). All NOS isoforms require post-translational interaction with the calcium-binding protein, calmodulin (CaM) for manifesting their catalytic activity. However, CaM has been suggested to control the translational assembly of the enzyme as well, particularly in helping its inducible isoform, iNOS assume a stable, heme-replete, dimeric and active form. Expression of recombinant murine iNOS in E.coli in the absence of CaM has been previously shown to give extremely poor yield of the enzyme which was claimed to be absolutely heme-free, devoid of flavins, completely monomeric and catalytically inactive when compared to the heme-replete, active, dimeric iNOS, generated through co-expression with CaM. In contrast, we found that although iNOS expressed without CaM does produce significantly low amounts of the CaM-free enzyme, the iNOS thus produced, is not completely devoid of heme and is neither entirely monomeric nor absolutely bereft of catalytic activity as reported before. In fact, iNOS synthesized in the absence of CaM undergoes compromised heme incorporation resulting in extremely poor dimerization and activity compared to its counterpart co-expressed with CaM. Moreover, such CaM-free iNOS has similar flavin content and reductase activity as iNOS co-expressed with CaM, suggesting that CaM may not be as much required for the functional assembly of the iNOS reductase domain as its oxygenase domain. LC-MS/MS-based peptide mapping of the CaM-free iNOS confirmed that it had the same full-length sequence as the CaM-replete iNOS. Isothermal calorimetric measurements also revealed high affinity for CaM binding in the CaM-free iNOS and thus the possible presence of a CaM-binding domain. Thus CaM is essential but not indispensible for the assembly of iNOS and such CaM-free iNOS may help in elucidating the role of CaM on iNOS catalysis.
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Affiliation(s)
- Latika Nagpal
- Department of Biotechnology & Guha Center for Genetic Engineering & Biotechnology, University of Calcutta, Kolkata, India
| | - Koustubh Panda
- Department of Biotechnology & Guha Center for Genetic Engineering & Biotechnology, University of Calcutta, Kolkata, India
- * E-mail:
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Matsunaga T, Yamaji Y, Tomokuni T, Morita H, Morikawa Y, Suzuki A, Yonezawa A, Endo S, Ikari A, Iguchi K, El-Kabbani O, Tajima K, Hara A. Nitric oxide confers cisplatin resistance in human lung cancer cells through upregulation of aldo-keto reductase 1B10 and proteasome. Free Radic Res 2014; 48:1371-85. [PMID: 25156503 DOI: 10.3109/10715762.2014.957694] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, we show that exposure of human lung cancer A549 cells to cisplatin (cis-diamminedichloroplatinum, CDDP) promotes production of nitric oxide (NO) through generation of reactive oxygen species (ROS) and resulting upregulation of inducible NO synthase (iNOS). The incubation of the cells with a NO donor, diethylenetriamine NONOate, not only reduced the CDDP-induced cell death and apoptotic alterations (induction of CCAAT-enhancer-binding protein homologous protein and caspase-3 activation), but also elevated proteolytic activity of 26S proteasome, suggesting that the activation of proteasome function contributes to the reduction of CDDP sensitivity by NO. Monitoring expression levels of six aldo-keto reductases (AKRs) (1A1, 1B1, 1B10, 1C1, 1C2, and 1C3) during the treatment with the NO donor and subsequent CDDP sensitivity test using the specific inhibitors also proposed that upregulation of AKR1B10 by NO is a key process for acquiring the CDDP resistance in A549 cells. Treatment with CDDP and NO increased amounts of nitrotyrosine protein adducts, indicative of peroxynitrite formation, and promoted the induction of AKR1B10, inferring a relationship between peroxynitrite formation and the enzyme upregulation in the cells. The treatment with CDDP or a ROS-related lipid aldehyde, 4-hydroxy-2-nonenal, facilitated the iNOS upregulation, which was restored by increasing the AKR1B10 expression. In contrast, the facilitation of NO production by CDDP treatment was hardly observed in AKR1B10-overexpressing A549 cells and established CDDP-resistant cancer cells (A549, LoVo, and PC3). Collectively, these results suggest the NO functions as a key regulator controlling AKR1B10 expression and 26S proteasome function leading to gain of the CDDP resistance.
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Affiliation(s)
- T Matsunaga
- Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu , Japan
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Sun YQ, Liu J, Zhang H, Huo Y, Lv X, Shi Y, Guo W. A mitochondria-targetable fluorescent probe for dual-channel NO imaging assisted by intracellular cysteine and glutathione. J Am Chem Soc 2014; 136:12520-3. [PMID: 25122520 DOI: 10.1021/ja504156a] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A mitochondria-specific fluorescent probe for NO (1) was synthesized by the direct conjugation of a pyronin dye with one of the amino groups of o-phenylenediamino (OPD). The probe could selectively detect NO over dehydroascorbic acid (DHA), ascorbic acid (AA), and methylglyoxal (MGO) as well as the reactive oxygen/nitrogen species (ROS/RNS) with the significant off-on response due to the production of a red-emission triazole 2. In the presence of cysteine/glutathione (Cys/GSH), 2 could be further transformed into a green-emission aminopyronin 4 and a red-emission thiopyronin 5, respectively. Assisted by intracellular Cys and GSH, the probe demonstrated its potential to monitor mitochondrial NO in a dual-channel mode.
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Affiliation(s)
- Yuan-Qiang Sun
- School of Chemistry and Chemical Engineering and ‡Institute of Biotechnology, Shanxi University , Taiyuan 030006, China
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Berka V, Liu W, Wu G, Tsai AL. Comparison of oxygen-induced radical intermediates in iNOS oxygenase domain with those from nNOS and eNOS. J Inorg Biochem 2014; 139:93-105. [PMID: 25016313 DOI: 10.1016/j.jinorgbio.2014.06.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/17/2014] [Accepted: 06/17/2014] [Indexed: 12/31/2022]
Abstract
Inducible nitric-oxide synthase (iNOS) produces the reactive oxygen and nitrogen species (ROS/RNS) involved in bacteria killing and is crucial in the host defense mechanism. However, high level ROS/RNS can also be detrimental to normal cells and thus their production has to be tightly controlled. Availability or deficiency of tetrahydrobiopterin (BH4) cofactor and l-arginine substrate controls coupling or uncoupling of NOS catalysis. Fully coupled reaction, with abundant BH4 and l-arginine, produces NO whereas the uncoupled NOS (in the absence of BH4 and/or l-arginine) generates ROS/RNS. In the current work we focus on direct rapid freeze EPR to characterize the structure and kinetics of oxygen-induced radical intermediates produced by ferrous inducible NOS oxygenase domain (iNOSox) in the presence or absence of BH4 and/or l-arginine. Fully reconstituted iNOSox (+BH4, +L-Arg) forms a dimer and yields a typical BH4 radical that indicates coupled reaction. iNOSox (-BH4) remains mainly monomeric and produces exclusively superoxide, that is only marginally affected by the presence of l-arginine. iNOSox (+BH4, -L-Arg) exists as a monomer/dimer mixture and yields both BH4 radical and superoxide. Present study is a natural extension of our previous work on the ferrous endothelial NOSox (eNOSox) [V. Berka, G. Wu, H.C. Yeh, G. Palmer, A.L. Tsai, J. Biol. Chem. 279 (2004) 32243-32251] and ferrous neuronal NOSox (nNOSox) [V. Berka, L.H. Wang, A.L. Tsai, Biochemistry 47 (2008) 405-420]. Overall, our data suggests different regulatory roles of l-arginine and BH4 in the production of oxygen-induced radical intermediates in NOS isoforms which nicely serve individual functional role.
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Affiliation(s)
- Vladimír Berka
- Division of Hematology, Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, United States.
| | - Wen Liu
- Division of Hematology, Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, United States
| | - Gang Wu
- Division of Hematology, Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, United States
| | - Ah-Lim Tsai
- Division of Hematology, Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, United States.
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Gupta R, Gupta LK, Bhattacharya SK. Chronic administration of modafinil induces hyperalgesia in mice: reversal by L-NG-nitro-arginine methyl ester and 7-nitroindazole. Eur J Pharmacol 2014; 736:95-100. [PMID: 24791680 DOI: 10.1016/j.ejphar.2014.04.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 04/21/2014] [Accepted: 04/23/2014] [Indexed: 12/01/2022]
Abstract
Modafinil [2-((diphenylmethyl) sulfinyl) acetamide] is a central nervous system stimulant. It has received considerable attention as a potential psychotropic agent in several psychiatric disorders. The current study was carried out to investigate the effect of modafinil after acute administration on animal models of pain in mice. Also, this study evaluated the effect of L-NG-nitroarginine methyl ester (L-NAME), 7-nitroindazole (7-NI) and naloxone following chronic administration of modafinil. Modafinil was administered in the doses of 50, 100 or 200 mg/kg once in acute study and it showed significantly increased tail-flick latency (tfl) and paw-licking latency. In formalin test modafinil (100 mg/kg) significantly reduced licking/biting time in both early and late phases in comparison to control. In chronic study, modafinil 100 mg/kg administered for 10 days, produced a progressive decrease in the reaction time (i.e., tfl/paw-licking latency) in comparison to day 1 values which started building up from day 4 and fully established at day 6, indicating hyperalgesic response. Prior administration of 7-NI (on day 7) and L-NAME (on day 10) prevented the hyperalgesic response while naloxone on day 10 did not have a significant effect on modafinil-induced hyperalgesia. These results demonstrate that modafinil has a potential role in pain as it exhibited antinociceptive effect after acute administration in a dose-dependent manner and on chronic administration it caused hyperalgesia. This hyperalgesia is reversed by nitric oxide synthase inhibitors, suggesting the possibility of involvement of nitric oxide pathway. Further studies are required to evaluate the role of modafinil in clinical pain.
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Affiliation(s)
- Rachna Gupta
- Department of Pharmacology, University College of Medical Sciences and GTB Hospital, University of Delhi, Delhi 110095, India
| | - Lalit Kumar Gupta
- Department of Pharmacology, Lady Hardinge Medical College & Smt. S.K. Hospital, New Delhi 110001, India.
| | - Swapan K Bhattacharya
- Department of Pharmacology, University College of Medical Sciences and GTB Hospital, University of Delhi, Delhi 110095, India
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Sipahi T, Basak A, Ozgen Z, Aksoy A, Omurlu I, Palabiyik O, Cakina S, Sener S. Lack of Evidence for Contribution of Endothelial Nitric Oxide Synthase Intron 4 VNTR Gene Polymorphisms to Development of Ischemic Stroke in Turkish Subjects. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2009.10817673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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42
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Jung YS, Kim DH, Hwang JY, Yun NY, Lee YH, Han SB, Hwang BY, Lee MS, Jeong HS, Hong JT. Anti-inflammatory effect of tricin 4'-O-(threo-β-guaiacylglyceryl) ether, a novel flavonolignan compound isolated from Njavara on in RAW264.7 cells and in ear mice edema. Toxicol Appl Pharmacol 2014; 277:67-76. [PMID: 24631338 DOI: 10.1016/j.taap.2014.03.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 02/26/2014] [Accepted: 03/01/2014] [Indexed: 12/22/2022]
Abstract
Although recent study has shown tricin 4'-O-(threo-β-guaiacylglyceryl) ether (TTGE), an isolated compound from Njavara rice, to have the most potent anti-inflammatory effects, the action mechanism has not been fully understood. Here, we examined the effect of TTGE on the inflammation and elucidated the potential mechanism. We demonstrated that TTGE significantly inhibited LPS-induced NO and ROS generation in RAW264.7 cells, which was correlated with the down-regulating effect of TTGE on the iNOS and COX-2 expression via NF-κB and STAT3. TPA-induced ear edema was also efficiently inhibited by the TTGE treatment. TTGE blocked the induction of iNOS and COX-2 through the regulation of NF-κB and STAT3, which could explain the reduced TPA-induced edema symptoms. Moreover, the introduction of ERK inhibitor abrogated the anti-inflammatory effect of TTGE via the recovery of NF-κB and STAT3 signalings. Taken together, these results suggest that TTGE has anti-inflammatory properties through down-regulation of NF-κB and STAT3 pathways.
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Affiliation(s)
- Young-Suk Jung
- College of Pharmacy, Pusan National University, Busan 609-735, Republic of Korea
| | - Dae Hwan Kim
- College of Pharmacy and Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Jae Yeon Hwang
- College of Pharmacy and Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Na Young Yun
- College of Pharmacy and Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Yun-Hee Lee
- Department of Pathology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Sang Bae Han
- College of Pharmacy and Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Bang Yeon Hwang
- College of Pharmacy and Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Moon Soon Lee
- College of Agriculture, Life and Environments, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Heon-Sang Jeong
- Department of Food Science and Technology, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea.
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Shen K, Leung SWS, Ji L, Huang Y, Hou M, Xu A, Wang Z, Vanhoutte PM. Notoginsenoside Ft1 activates both glucocorticoid and estrogen receptors to induce endothelium-dependent, nitric oxide-mediated relaxations in rat mesenteric arteries. Biochem Pharmacol 2014; 88:66-74. [PMID: 24440742 DOI: 10.1016/j.bcp.2014.01.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 01/04/2014] [Accepted: 01/07/2014] [Indexed: 01/01/2023]
Abstract
Panax notoginseng (Burk.) F.H. Chen has been used traditionally for the treatment of cardiovascular diseases. Notoginsenoside Ft1 (Ft1) is a bioactive saponin from the leaves of P. notoginseng. Experiments were designed to determine whether or not Ft1 is an endothelium-dependent vasodilator. Rat mesenteric arteries were suspended in organ chambers for the measurement of isometric tension during phenylephrine-induced contractions. The cyclic guanosine monophosphate (cGMP) level was assessed using enzyme immunoassay. The phosphorylation and protein expressions of endothelial nitric oxide synthase (eNOS), glucocorticoid receptors (GR), estrogen receptors beta (ERß), protein kinase B (Akt) and extracellular signal-regulated kinase 1/2 (ERK1/2) were determined by Western blotting. The localization of GR and ERß were determined by immunofluorescence staining. Ft1 caused endothelium-dependent relaxations, which were abolished by l-NAME (inhibitor of nitric oxide synthases) and ODQ (inhibitor of soluble guanylyl cyclase). Ft1 increased the cGMP level in rat mesenteric arteries. GR and ERß were present in the endothelial layer and their antagonism by RU486 and PHTPP, respectively, inhibited Ft1-induced endothelium-dependent relaxations and phosphorylations of eNOS, Akt and ERK1/2. Inhibition of phosphoinositide-3-kinase (PI3K) by wortmannin and ERK1/2 by U0126 reduced Ft1-evoked relaxations and eNOS phosphorylation. Taken in conjunction, the present findings suggest that Ft1 stimulates endothelial GRs and ERßs with subsequent activation of the PI3K/Akt and ERK1/2 pathways in rat mesenteric arteries. This results in phosphorylation of eNOS and the release of NO, which activates soluble guanylyl cyclase in the vascular smooth muscle cells leading to relaxations.
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Affiliation(s)
- Kaikai Shen
- The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201210, China; Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Susan W S Leung
- Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
| | - Lili Ji
- The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201210, China
| | - Yu Huang
- Institute of Vascular Medicine and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Hong Kong, China
| | - Maoqi Hou
- The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201210, China
| | - Aimin Xu
- Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Zhengtao Wang
- The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201210, China.
| | - Paul M Vanhoutte
- Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Department of Clinical Pharmacy, King Saud University, Riyadh, Saudi Arabia
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Effects of selective and non-selective inhibitors of nitric oxide synthase on morphine- and endomorphin-1-induced analgesia in acute and neuropathic pain in rats. Neuropharmacology 2013; 75:445-57. [DOI: 10.1016/j.neuropharm.2013.08.031] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 08/05/2013] [Accepted: 08/27/2013] [Indexed: 12/29/2022]
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45
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Belotte J, Fletcher NM, Awonuga AO, Alexis M, Abu-Soud HM, Saed MG, Diamond MP, Saed GM. The role of oxidative stress in the development of cisplatin resistance in epithelial ovarian cancer. Reprod Sci 2013; 21:503-8. [PMID: 24077440 DOI: 10.1177/1933719113503403] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To investigate the role of oxidative stress in the development of cisplatin resistance in epithelial ovarian cancer (EOC). METHODS Two parent EOC cell lines (MDAH-2774 and SKOV-3) and their chemoresistant counterparts (cisplatin, 50 µmol/L) were used. Total RNA was extracted and subjected to real-time reverse transcriptase polymerase chain reaction to evaluate the expression of glutathione reductase (GSR) and inducible nitric oxide synthase (iNOS), as well as nitrate/nitrite levels. Analysis of variance was used for main effects and Tukey for post hoc analysis at P < .05 for statistical significance. RESULTS Both cisplatin resistant cell lines displayed a significant decrease in GSR messenger RNA (mRNA) levels and activity (P < .01). As compared to sensitive controls, nitrate/nitrite levels were significantly higher in SKOV-3 cisplatin resistant cells while iNOS mRNA levels were significantly higher in MDAH-2774 cisplatin resistant cells (P < .05). CONCLUSION Our data suggest that the development of cisplatin resistance tilts the balance toward a pro-oxidant state in EOC.
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Affiliation(s)
- Jimmy Belotte
- 1Department of Obstetrics and Gynecology, C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
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Bonassoli VT, Contardi EB, Milani H, de Oliveira RMW. Effects of nitric oxide synthase inhibition in the dorsolateral periaqueductal gray matter on ethanol withdrawal-induced anxiety-like behavior in rats. Psychopharmacology (Berl) 2013; 228:487-98. [PMID: 23494233 DOI: 10.1007/s00213-013-3049-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 02/26/2013] [Indexed: 01/03/2023]
Abstract
RATIONALE Nitric oxide (NO)-mediated transmission in the dorsolateral periaqueductal gray matter (dlPAG) has been involved in the expression of anxiety-like behaviors. Ethanol withdrawal sensitizes the dlPAG and results in increased anxiety-like responses. OBJECTIVES The objective of the study was to test the hypothesis that NO in the dlPAG is involved in the expression of ethanol withdrawal-induced anxiety. METHODS Male Wistar rats were implanted with guide cannulae aimed at the dlPAG. The animals were forced to consume a liquid diet containing ethanol 6-8 % (v/v) for 15 days as their only source of diet. Six days after surgery and 24 h after ethanol discontinuation, the animals received microinjections of the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (carboxy-PTIO), nonselective nitric oxide synthase inhibitor N (G)-nitro-L-arginine methyl ester (L-NAME), selective neuronal nitric oxide synthase inhibitor 1-(2-[trifluoromethyl]phenyl) imidazole (TRIM), or selective inducible nitric oxide synthase (iNOS) inhibitor N-([3-(aminomethyl)phenyl]methyl) ethanimidamide dihydrochloride (1400W) into the dlPAG. Ten minutes later, the animals were tested in the light/dark box. RESULTS Carboxy-PTIO (1 nmol), L-NAME (200 nmol), TRIM (20 nmol), and 1400W (0.3 and 1 nmol) decreased the anxiogenic-like effects of ethanol withdrawal in rats in the light/dark box test. The NO precursor L-arginine reversed the effects of L-NAME. CONCLUSIONS NO production in the dlPAG may play a role in the modulation of ethanol withdrawal-induced anxiety-like behavior in rats. Furthermore, iNOS-mediated NO synthesis in the dlPAG is predominantly involved in the behavioral expression of anxiety-like behavior during ethanol withdrawal.
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Affiliation(s)
- Vivian Taciany Bonassoli
- Department of Pharmacology and Therapeutics, State University of Maringá, Av. Colombo, 5790, CEP 87020-900 Maringá, Paraná, Brazil
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Yu H, Zhang X, Xiao Y, Zou W, Wang L, Jin L. Targetable Fluorescent Probe for Monitoring Exogenous and Endogenous NO in Mitochondria of Living Cells. Anal Chem 2013; 85:7076-84. [DOI: 10.1021/ac401916z] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Haibo Yu
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xinfu Zhang
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Yi Xiao
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Wei Zou
- School of Life Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liping Wang
- School of Life Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liji Jin
- School of Life Science and Technology, Dalian University of Technology, Dalian 116024, China
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Marut W, Kavian N, Servettaz A, Hua-Huy T, Nicco C, Chéreau C, Weill B, Dinh-Xuan AT, Batteux F. Amelioration of systemic fibrosis in mice by angiotensin II receptor blockade. ACTA ACUST UNITED AC 2013; 65:1367-77. [PMID: 23335130 DOI: 10.1002/art.37873] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Accepted: 01/10/2013] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Systemic sclerosis (SSc) is characterized by microvascular damage, fibrosis of skin and visceral organs, and autoimmunity. Previous studies have shown that angiotensin II is involved in the synthesis of type I collagen. We investigated whether the blockade of angiotensin II receptor type I (AT1 ) by irbesartan reduces skin and lung fibrosis in 2 murine models of SSc. METHODS SSc was induced by daily intradermal injection of HOCl into the backs of BALB/c mice (HOCl-induced SSc). Mice were treated daily with irbesartan by oral gavage. RESULTS Irbesartan reduced dermal thickness, collagen concentration, Smad2/3, and α-smooth muscle actin expression, as well as fibroblast proliferation and H-Ras expression in the skin of mice with HOCl-induced SSc. Mice treated with irbesartan also displayed less lung fibrosis, less inflammation, and a lower concentration of collagen in the lungs than untreated mice. Exhaled nitric oxide, inducible nitric oxide synthase, and 3-nitrotyrosine expression in the lungs were decreased following irbesartan treatment. Moreover, irbesartan reduced the number and the proliferation of splenic B and T cells and the serum levels of anti-DNA topoisomerase I autoantibodies. CONCLUSION Irbesartan, an AT1 antagonist, prevents fibrosis and inflammation and inhibits nitric oxide production in HOCl-induced models of systemic fibrosis. Our findings extend the indication of an AT1 antagonist to SSc patients with diffuse fibrosis, especially those with lung involvement.
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Affiliation(s)
- Wioleta Marut
- Université Paris Descartes, EA 1833, and Hôpital Cochin, AP-HP, Paris, France
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JANAKIRAM NAVEENAB, MOHAMMED ALTAF, RAVILLAH DURGADEVI, CHOI CHANGIN, ZHANG YUTING, DESAI DHIMANT, AMIN SHANTU, RAO CHINTHALAPALLYV. Chemopreventive effects of PBI-Se, a selenium-containing analog of PBIT, on AOM-induced aberrant crypt foci in F344 rats. Oncol Rep 2013; 30:952-60. [DOI: 10.3892/or.2013.2483] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 03/26/2013] [Indexed: 11/06/2022] Open
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50
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Bollmann F, Fechir K, Nowag S, Koch K, Art J, Kleinert H, Pautz A. Human inducible nitric oxide synthase (iNOS) expression depends on chromosome region maintenance 1 (CRM1)- and eukaryotic translation initiation factor 4E (elF4E)-mediated nucleocytoplasmic mRNA transport. Nitric Oxide 2013; 30:49-59. [PMID: 23471078 DOI: 10.1016/j.niox.2013.02.083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 02/15/2013] [Accepted: 02/25/2013] [Indexed: 12/31/2022]
Abstract
Human inducible nitric oxide synthase (iNOS) is regulated on the expressional level mostly by post-transcriptional mechanisms modulating the mRNA stability. Another important step in the control of eukaryotic gene expression is the nucleocytoplasmic mRNA transport. Most cellular mRNAs are exported via the TAP/Nxt complex of proteins. However, some mRNAs are transported by a different mechanism involving the nuclear export receptor CRM1. Treatment of DLD-1 cells with the CRM1 inhibitor leptomycin B (LMB) or anti-CRM1 siRNAs reduced cytokine-induced iNOS expression. We could demonstrate that the iNOS mRNA is exported from the nucleus in a CRM1-dependent manner. Since CRM1 itself does not possess any RNA binding affinity, an adapter protein is needed to mediate CRM1-dependent mRNA export. Western blot experiments showed that the eukaryotic translation initiation factor eIF4E is retained in the nucleus after LMB treatment. Blockade of eIF4E by ribavirin or overexpression of the promyelocytic leukemia protein (PML) decreased iNOS expression due to reduced iNOS mRNA export from the nucleus. Transfection experiments provide evidence that the 3'-untranslated region of the iNOS mRNA is involved in eIF4E-mediated iNOS mRNA transport. In summary, CRM1 and eIF4E seem to play an important role in the nucleocytoplasmic export of human iNOS mRNA.
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Affiliation(s)
- Franziska Bollmann
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, D 55101 Mainz, Germany
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