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Wang HB, Xiao X, Dai W, Cui Y, Li WM, Peng R, Hu L, Wang ST. Dispel some mist on circulating biopterins: measurement, physiological interval and pathophysiological implication. Metabolomics 2024; 20:74. [PMID: 38980520 DOI: 10.1007/s11306-024-02137-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 06/04/2024] [Indexed: 07/10/2024]
Abstract
BACKGROUND AND AIMS Biopterins, including tetrahydrobiopterin (BH4), dihydrobiopterin (BH2), and biopterin (B), were crucial enzyme cofactors in vivo. Despite their recognized clinical significance, there remain notable research gaps and controversies surrounding experimental outcomes. This study aims to clarify the biopterins-related issues, including analytical art, physiological intervals, and pathophysiological implications. MATERIALS AND METHODS A novel LC-MS/MS method was developed to comprehensively profile biopterins in plasma, utilizing chemical derivatization and cold-induced phase separation. Subsequently, apparently healthy individuals were enrolled to investigate the physiological ranges. And the relationships between biopterins and biochemical indicators were analyzed to explore the pathophysiological implications. RESULTS The developed method was validated as reliable for detecting biopterins across the entire physiological range. Timely anti-oxidation was found to be essential for accurate assessment of biopterins. The observed overall mean ± SDs levels were 3.51 ± 0.94, 1.54 ± 0.48, 2.45 ± 0.84 and 5.05 ± 1.14 ng/mL for BH4, BH2, BH4/BH2 and total biopterins. The status of biopterins showed interesting correlations with age, gender, hyperuricemia and overweight. CONCLUSION In conjunction with proper anti-oxidation, the newly developed method enables accurate determination of biopterins status in plasma. The observed physiological intervals and pathophysiological implications provide fundamental yet inspiring support for further clinical researches.
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Affiliation(s)
- Hai-Bo Wang
- Department of Clinical Laboratory, Institute of Translational Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Xuan Xiao
- Department of Clinical Laboratory, Institute of Translational Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Wen Dai
- Department of Clinical Laboratory, Institute of Translational Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yan Cui
- Department of Clinical Laboratory, Institute of Translational Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Wan-Man Li
- Department of Clinical Laboratory, Institute of Translational Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Medical Laboratory, Liuzhou Municipal Liutie Central Hospital, Liuzhou, 545000, China
| | - Rui Peng
- Department of Clinical Laboratory, Institute of Translational Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Liu Hu
- Physical Examination Center, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Shao-Ting Wang
- Department of Clinical Laboratory, Institute of Translational Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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Manna S, Ruano CSM, Hegenbarth JC, Vaiman D, Gupta S, McCarthy FP, Méhats C, McCarthy C, Apicella C, Scheel J. Computational Models on Pathological Redox Signalling Driven by Pregnancy: A Review. Antioxidants (Basel) 2022; 11:585. [PMID: 35326235 PMCID: PMC8945226 DOI: 10.3390/antiox11030585] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 02/04/2023] Open
Abstract
Oxidative stress is associated with a myriad of diseases including pregnancy pathologies with long-term cardiovascular repercussions for both the mother and baby. Aberrant redox signalling coupled with deficient antioxidant defence leads to chronic molecular impairment. Abnormal placentation has been considered the primary source for reactive species; however, placental dysfunction has been deemed secondary to maternal cardiovascular maladaptation in pregnancy. While various therapeutic interventions, aimed at combating deregulated oxidative stress during pregnancy have shown promise in experimental models, they often result as inconclusive or detrimental in clinical trials, warranting the need for further research to identify candidates. The strengths and limitations of current experimental methods in redox research are discussed. Assessment of redox status and oxidative stress in experimental models and in clinical practice remains challenging; the state-of-the-art of computational models in this field is presented in this review, comparing static and dynamic models which provide functional information such as protein-protein interactions, as well as the impact of changes in molecular species on the redox-status of the system, respectively. Enhanced knowledge of redox biology in during pregnancy through computational modelling such as generation of Systems Biology Markup Language model which integrates existing models to a larger network in the context of placenta physiology.
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Affiliation(s)
- Samprikta Manna
- Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, University College Cork, T12 YE02 Cork, Ireland;
| | - Camino S. M. Ruano
- Institut Cochin, Inserm U1016, UMR8104 CNRS, Université de Paris, 75014 Paris, France; (C.S.M.R.); (D.V.); (C.M.); (C.A.)
| | - Jana-Charlotte Hegenbarth
- Department of Molecular Genetics, Faculty of Science and Engineering, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6211 KH Maastricht, The Netherlands;
- Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Daniel Vaiman
- Institut Cochin, Inserm U1016, UMR8104 CNRS, Université de Paris, 75014 Paris, France; (C.S.M.R.); (D.V.); (C.M.); (C.A.)
| | - Shailendra Gupta
- Department of Systems Biology and Bioinformatics, Rostock University, 18051 Rostock, Germany; (S.G.); (J.S.)
| | - Fergus P. McCarthy
- Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, University College Cork, T12 YE02 Cork, Ireland;
| | - Céline Méhats
- Institut Cochin, Inserm U1016, UMR8104 CNRS, Université de Paris, 75014 Paris, France; (C.S.M.R.); (D.V.); (C.M.); (C.A.)
| | - Cathal McCarthy
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, T12 K8AF Cork, Ireland;
| | - Clara Apicella
- Institut Cochin, Inserm U1016, UMR8104 CNRS, Université de Paris, 75014 Paris, France; (C.S.M.R.); (D.V.); (C.M.); (C.A.)
| | - Julia Scheel
- Department of Systems Biology and Bioinformatics, Rostock University, 18051 Rostock, Germany; (S.G.); (J.S.)
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Gonçalves DA, Jasiulionis MG, de Melo FHM. The Role of the BH4 Cofactor in Nitric Oxide Synthase Activity and Cancer Progression: Two Sides of the Same Coin. Int J Mol Sci 2021; 22:9546. [PMID: 34502450 PMCID: PMC8431490 DOI: 10.3390/ijms22179546] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 08/22/2021] [Accepted: 08/23/2021] [Indexed: 12/14/2022] Open
Abstract
Cancer development is associated with abnormal proliferation, genetic instability, cell death resistance, metabolic reprogramming, immunity evasion, and metastasis. These alterations are triggered by genetic and epigenetic alterations in genes that control cell homeostasis. Increased reactive oxygen and nitrogen species (ROS, RNS) induced by different enzymes and reactions with distinct molecules contribute to malignant transformation and tumor progression by modifying DNA, proteins, and lipids, altering their activities. Nitric oxide synthase plays a central role in oncogenic signaling modulation and redox landscape. Overexpression of the three NOS isoforms has been found in innumerous types of cancer contributing to tumor growth and development. Although the main function of NOS is the production of nitric oxide (NO), it can be a source of ROS in some pathological conditions. Decreased tetrahydrobiopterin (BH4) cofactor availability is involved in NOS dysfunction, leading to ROS production and reduced levels of NO. The regulation of NOSs by BH4 in cancer is controversial since BH4 has been reported as a pro-tumoral or an antitumoral molecule. Therefore, in this review, the role of BH4 in the control of NOS activity and its involvement in the capabilities acquired along tumor progression of different cancers was described.
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Affiliation(s)
- Diego Assis Gonçalves
- Micro-Imuno-Parasitology Department, Universidade Federal de São Paulo, São Paulo 04023-062, Brazil;
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora 36036-900, Brazil
| | | | - Fabiana Henriques Machado de Melo
- Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, São Paulo 05508-000, Brazil
- Institute of Medical Assistance to Public Servants of the State (IAMSPE), São Paulo 04039-000, Brazil
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Lv Y, Li G, Peng H, Liu Y, Yao J, Wang G, Sun J, Liu J, Zhang H, Chen G, Liu L. Development of elastic artificial vessels with a digital pulse flow system to investigate the risk of restenosis and vasospasm. LAB ON A CHIP 2020; 20:3051-3059. [PMID: 32725035 DOI: 10.1039/d0lc00533a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The postoperative risk of stenosis is a complex issue, with risk factors including the status of human umbilical vein endothelial cells, the shear stress of dynamic blood flow, and blood physiology. Current research would benefit from in vitro models that can mimic the microenvironment of living vessels, to study the response of endothelial cells to stent placement. In this study, we constructed a digital pulse flow system based on a group of programmable solenoid valves, to mimic dynamic blood flows in the left coronary artery. Elastic artificial vessels, with internally cultured endothelial cells, were used to simulate vessel function and physiology. Based on this novel platform, we systematically explored cell proliferation and function in artificial vessels implanted with bare metal stents or drug-eluting stents, using unstented vessels as controls, under static and pulse flow conditions. The results indicate that the natural shear stresses of dynamic blood flow actually benefit endothelial cell attachment and proliferation. And drug-eluting stents showed stronger inhibition of cell proliferation than bare metal stents, but had a more negative effect on the synthesis of nitric oxide synthase (NOS), suggesting that drug elution might reduce the postoperative risk of restenosis, while increasing the risk of vasospasm. The results suggest that stent evaluation should include both the risk of restenosis and the effect on endothelial cells. Our simulation establishes a realistic in vitro model for pathological studies of restenosis and vasospasm, shows potential for evaluation of new stent designs, and could help develop individualised therapies for patients with atherosclerosis.
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Affiliation(s)
- Yalei Lv
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 401331, China.
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Zhang Q, Dong J, Yu Z. Pleiotropic use of Statins as non-lipid-lowering drugs. Int J Biol Sci 2020; 16:2704-2711. [PMID: 33110390 PMCID: PMC7586431 DOI: 10.7150/ijbs.42965] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 08/01/2020] [Indexed: 12/14/2022] Open
Abstract
Statins, known as HMG-CoA reductase (HMGCR) inhibitors, have primarily been utilized for metabolic and angiographic medical applications because of their cholesterol-lowering effects. Similar to other drugs, statins may also induce a series of potential side effects. Statins inhibit the HMGCR (rate-limiting enzyme) activity in early stages of mevalonate pathway and then indirectly affect a number of intermediate products, including non-sterol isoprenoids (coenzyme Q10, dolichol etc.), which can result in impaired functions of body organs. Recently, scores of studies have uncovered additional functional mechanisms of statins in other diseases, such as diabetes mellitus, nervous system diseases, coronary heart disease, inflammation and cancers. This review aims to summarize the positive and adverse mechanisms of statin therapy. Statin care should be taken in the treatment of many diseases including cancers. Since the underlying mechanisms are not fully elucidated, future studies should spend more time and efforts on basic research to explore the mechanisms of statins.
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Affiliation(s)
- Qijia Zhang
- Digestive internal medicine and Department of infectious diseases, Zhuhai Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Jianlong Dong
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - Ze Yu
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, Guangzhou, China
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Molecular mechanisms by which iNOS uncoupling can induce cardiovascular dysfunction during sepsis: Role of posttranslational modifications (PTMs). Life Sci 2020; 255:117821. [PMID: 32445759 DOI: 10.1016/j.lfs.2020.117821] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 01/01/2023]
Abstract
Human sepsis is the result of a multifaceted pathological process causing marked dysregulation of cardiovascular responses. A more sophisticated understanding of the pathogenesis of sepsis is certainly prerequisite. Evidence from studies provide further insight into the role of inducible nitric oxide synthase (iNOS) isoform. Results on inhibition of iNOS in sepsis models remain inconclusive. Concern has been devoted to improving our knowledge and understanding of the role of iNOS. The aim of this review is to define the role of iNOS in redox homeostasis disturbance, the detailed mechanisms linking iNOS and posttranslational modifications (PTMs) to cardiovascular dysfunctions, and their future implications in sepsis settings. Many questions related to the iNOS and PTMs still remain open, and much more work is needed on this.
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Zhuang XL, Zhu ZL, Zhu JL, Lai SM, Gui LX, Lin MJ. Synchronous detection of vascular tension and nitric oxide release in pulmonary artery: A combined application of confocal wire myograph with confocal laser scanning microscopy. Vascular 2020; 28:619-628. [PMID: 32295493 DOI: 10.1177/1708538120917555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES To detect the vascular tension and nitric oxide (NO) release synchronously in mice pulmonary artery, we perform two experiments and present a novel application of confocal wire myograph coupled with the confocal laser scanning microscopy. METHODS In the first experiment, viable endothelium-intact mouse pulmonary artery (outer diameter 100-300 μM) rings underwent a one-hour preincubation with a NO-specific fluorescent dye, 4-amino-5-methylamino-2',7'-difluorofluorescein diacetate Calbiochem (2.5 μM), and then precontracted with phenylephrine (Phen, 10-6 M), and subsequently dilated in acetylcholine (ACh, 10-6 M - 10-4 M). The endothelium-dependent vasorelaxation and NO generation in pulmonary artery rings were simultaneously recorded. In the second experiment, after 30-min incubation with the former NO fluorescent dye, the qualified pulmonary artery rings were co-incubated for another 30 min with a nitric oxide synthase inhibitor, 10-4 M Nω-nitro-L-arginine-methyl-ester (L-NAME), and then pretreated with Phen (10-6 M) followed by ACh (10-5 M). The Ach-induced vasodilation and NO release were recorded simultaneously. RESULTS ACh (10-6 M - 10-4 M) promoted pulmonary artery relaxation and intracellular NO release in a dose-dependent manner. Additionally, L-NAME (10-4 M) significantly attenuated the vasodilatation and the intracellular NO release. CONCLUSIONS This combined application visually confirms that the synchronous changes in Ach induced vasodilation and NO release, which provides a new method for cardiovascular research.
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Affiliation(s)
- Xiao-Ling Zhuang
- Department of Physiology & Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China.,Department of Pathology, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Zhuang-Li Zhu
- Department of Physiology & Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Jie-Ling Zhu
- Department of Physiology & Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Su-Mei Lai
- Department of Physiology & Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Long-Xin Gui
- Department of Physiology & Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Mo-Jun Lin
- Department of Physiology & Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
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Abou-Salim MA, Shaaban MA, Abd El Hameid MK, Elshaier YAMM, Halaweish F. Design, synthesis and biological study of hybrid drug candidates of nitric oxide releasing cucurbitacin-inspired estrone analogs for treatment of hepatocellular carcinoma. Bioorg Chem 2019; 85:515-533. [PMID: 30807895 DOI: 10.1016/j.bioorg.2019.01.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 01/27/2019] [Accepted: 01/30/2019] [Indexed: 01/08/2023]
Abstract
Development of hybrid drug candidates is well known strategy for designing antitumor agents. Herein, a novel class of nitric oxide donating cucurbitacin inspired estrone analogs (NO-CIEAs) were designed and synthesized as multitarget agents. Synthesized analogs were initially evaluated for their anti-hepatocellular carcinoma activities. Among the tested analogs, NO-CIEAs 17 and 20a exhibited more potent activity against HepG2 cells (IC50 = 4.69 and 12.5 µM, respectively) than the reference drug Erlotinib (IC50 = 25 µM). Interestingly, NO-CIEA 17 exerted also a high potent activity against Erlotinib-resistant HepG2 cell line (HepG2-R) (IC50 = 8.21 µM) giving insight about its importance in drug resistance therapy. Intracellular measurements of NO revealed that NO-CIEAs 17 and 20a showed a significant increase in NO production in tumor cells after 1 h of incubation comparable to the reference prodrug JS-K. Flow cytometric analysis showed that both NO-CIEAs 17 and 20a mainly arrested the HepG2 cells in the G0/G1 phase. Also, In-Cell Based ELISA screening showed that NO-CIEA 17 resulted in a potential inhibitory activity towards the EGFR and MAPK (25% and 29% inhibition compared to untreated control cells, respectively). This data suggests the binding ability of NO-CIEA 17 to the EGFR and ERK to be well correlated along with the docking and cellular studies. Also, treatment of HepG2-R cells with NO-CIEA 17 showed a potential reduction of MRP2 expression in a dose dependent manner providing a significant impact on the chemotherapeutic resistance. Overall, the current study provides a potential new approach for the discovery of a novel antitumor agent against HCC.
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Affiliation(s)
- Mahrous A Abou-Salim
- Al-Azhar University, Faculty of Pharmacy, Pharmaceutical Organic Chemistry, Assiut 71524, Egypt; South Dakota State University, Chemistry & Biochemistry, Box 2202, Brookings, SD 57007, USA
| | - Mohamed A Shaaban
- Cairo University, Faculty of Pharmacy, Pharmaceutical Organic Chemistry, Cairo 11562, Egypt
| | | | - Yaseen A M M Elshaier
- University of Sadat City, Faculty of Pharmacy, Organic and Medicinal Chemistry, Menoufia 32958, Egypt
| | - Fathi Halaweish
- South Dakota State University, Chemistry & Biochemistry, Box 2202, Brookings, SD 57007, USA
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Engineer A, Saiyin T, Lu X, Kucey AS, Urquhart BL, Drysdale TA, Norozi K, Feng Q. Sapropterin Treatment Prevents Congenital Heart Defects Induced by Pregestational Diabetes Mellitus in Mice. J Am Heart Assoc 2018; 7:e009624. [PMID: 30608180 PMCID: PMC6404194 DOI: 10.1161/jaha.118.009624] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/17/2018] [Indexed: 01/05/2023]
Abstract
Background Tetrahydrobiopterin is a cofactor of endothelial NO synthase ( eNOS ), which is critical to embryonic heart development. We aimed to study the effects of sapropterin (Kuvan), an orally active synthetic form of tetrahydrobiopterin on eNOS uncoupling and congenital heart defects ( CHD s) induced by pregestational diabetes mellitus in mice. Methods and Results Adult female mice were induced to pregestational diabetes mellitus by streptozotocin and bred with normal male mice to produce offspring. Pregnant mice were treated with sapropterin or vehicle during gestation. CHD s were identified by histological analysis. Cell proliferation, eNOS dimerization, and reactive oxygen species production were assessed in the fetal heart. Pregestational diabetes mellitus results in a spectrum of CHD s in their offspring. Oral treatment with sapropterin in the diabetic dams significantly decreased the incidence of CHD s from 59% to 27%, and major abnormalities, such as atrioventricular septal defect and double-outlet right ventricle, were absent in the sapropterin-treated group. Lineage tracing reveals that pregestational diabetes mellitus results in decreased commitment of second heart field progenitors to the outflow tract, endocardial cushions, and ventricular myocardium of the fetal heart. Notably, decreased cell proliferation and cardiac transcription factor expression induced by maternal diabetes mellitus were normalized with sapropterin treatment. Furthermore, sapropterin administration in the diabetic dams increased eNOS dimerization and lowered reactive oxygen species levels in the fetal heart. Conclusions Sapropterin treatment in the diabetic mothers improves eNOS coupling, increases cell proliferation, and prevents the development of CHD s in the offspring. Thus, sapropterin may have therapeutic potential in preventing CHD s in pregestational diabetes mellitus.
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Affiliation(s)
- Anish Engineer
- Department of Physiology and PharmacologySchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
| | - Tana Saiyin
- Department of Physiology and PharmacologySchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
| | - Xiangru Lu
- Department of Physiology and PharmacologySchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
| | - Andrew S. Kucey
- Department of Physiology and PharmacologySchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
| | - Brad L. Urquhart
- Department of Physiology and PharmacologySchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
| | - Thomas A. Drysdale
- Department of Physiology and PharmacologySchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
- Department of PediatricsSchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
- Children's Health Research InstituteLondonOntarioCanada
| | - Kambiz Norozi
- Department of PediatricsSchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
- Children's Health Research InstituteLondonOntarioCanada
- Department of Paediatric Cardiology and Intensive Care MedicineHannover Medical SchoolHannoverGermany
- Department of Paediatric Cardiology and Intensive Care MedicineUniversity of GöttingenGermany
| | - Qingping Feng
- Department of Physiology and PharmacologySchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
- Department of MedicineSchulich School of Medicine and DentistryUniversity of Western OntarioLondonOntarioCanada
- Children's Health Research InstituteLondonOntarioCanada
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Elshaier YAMM, Shaaban MA, Abd El Hamid MK, Abdelrahman MH, Abou-Salim MA, Elgazwi SM, Halaweish F. Design and synthesis of pyrazolo[3,4-d]pyrimidines: Nitric oxide releasing compounds targeting hepatocellular carcinoma. Bioorg Med Chem 2017; 25:2956-2970. [PMID: 28487127 DOI: 10.1016/j.bmc.2017.03.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/26/2017] [Accepted: 03/03/2017] [Indexed: 02/07/2023]
Abstract
A new series of pyrazolo[3,4-d]pyrimidines tethered with nitric oxide (NO) producing functionality was designed and synthesized. Sulforhodamine B (SRB) protein assay revealed that NO releasing moiety in the synthesized compounds significantly decreased the cell growth more than the des-NO analogues. Compounds 7C and 7G possessing N-para-substituted phenyl group, released the highest NO concentration of 4.6% and 4.7% respectively. Anti-proliferative activity of synthesized compounds on HepG2 cell line identified compounds 7h, 7p, 14a and 14b as the most cytotoxic compounds in the series of IC50=3, 5, 3 and 5μM, respectively, compared to erlotinib as a reference drug (IC50=25μM). Flow cytometry studies revealed that 7h arrested the cells in G0/G1 phase of cell cycle while 7p arrested the cells in S phase. Moreover, docking study of the synthesized compounds on EGFR (PDB code: 1M17) and cytotoxicity study indicated that N-1 phenyl para substitution, pyrazole C-3 alkyl substitution and tethering the nitrate moiety through butyl group had a significant impact on the activity.
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Affiliation(s)
- Yaseen A M M Elshaier
- Al-Azhar University, Faculty of Pharmacy, Pharmaceutical Organic Chemistry Department, Assiut 71524, Egypt
| | - Mohamed A Shaaban
- Cairo University, Faculty of Pharmacy, Pharmaceutical Organic Chemistry Department, Cairo 11562, Egypt
| | - Mohammed K Abd El Hamid
- Cairo University, Faculty of Pharmacy, Pharmaceutical Organic Chemistry Department, Cairo 11562, Egypt
| | - Mostafa H Abdelrahman
- Al-Azhar University, Faculty of Pharmacy, Pharmaceutical Organic Chemistry Department, Assiut 71524, Egypt
| | - Mahrous A Abou-Salim
- Al-Azhar University, Faculty of Pharmacy, Pharmaceutical Organic Chemistry Department, Assiut 71524, Egypt; South Dakota State University, Faculty of Science, Chemistry Department, Brookings, SD 57007, USA
| | - Sara M Elgazwi
- South Dakota State University, Faculty of Science, Chemistry Department, Brookings, SD 57007, USA
| | - Fathi Halaweish
- South Dakota State University, Faculty of Science, Chemistry Department, Brookings, SD 57007, USA.
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Menzel D, Haller H, Wilhelm M, Robenek H. L-Arginine and B vitamins improve endothelial function in subjects with mild to moderate blood pressure elevation. Eur J Nutr 2016; 57:557-568. [PMID: 27817128 PMCID: PMC5845626 DOI: 10.1007/s00394-016-1342-6] [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: 05/05/2016] [Accepted: 10/24/2016] [Indexed: 02/05/2023]
Abstract
Purpose The aim of this trial was to investigate the influence of a dietetic product consisting of a unique combination of l-arginine with the vitamins B6, folic acid and B12 (Telcor® Arginin plus) on endothelial dysfunction. Methods Subjects aged 40–65 years with mild to moderate blood pressure (BP) elevation not treated with anti-hypertensive drugs were randomly assigned to either the dietetic product (n = 40) or a matching placebo (n = 41) for 3 months with open follow-up for a further 3 months. Postprandial change in endothelial function was assessed using the validated reactive hyperaemia index (RHI) at 3 months compared to the study onset (RHI post–pre, visit 3–visit 1; ΔΔRHI). Secondary parameters included BP and plasma homocysteine concentration. Results The primary efficacy analysis revealed superiority of the nutritional intervention over placebo (p = 0.0349) in reducing the deterioration of endothelial function. While in the active group ΔΔRHI increased (0.371 ± 0.122), almost no change could be detected in the placebo group (0.031 ± 0.100), thus demonstrating a significant improvement in vascular function in the intervention group. Moreover, the intervention reduced BP and homocysteine levels. Non-serious adverse events were equally distributed in both groups, and none of the events were assessed as possibly intervention-related by the investigators. Conclusions This trial confirmed the effective and safe use of dietary management with l-arginine in combination with B vitamins. The primary efficacy analysis demonstrated a statistically significant superiority of the combination of l-arginine with B vitamins over placebo in improving and restoring impaired endothelial function and lowering BP in patients with mild to moderate blood pressure elevation.
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Affiliation(s)
| | - Hermann Haller
- Department of Nephrology and Hypertension Medicine, Hannover Medical School, University of Hannover, Hannover, Germany
| | | | - Horst Robenek
- University Clinic Münster, Albert-Schweitzer-Campus 1, Domagkstr. 3, 48149, Münster, Germany.
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Leiva A, Fuenzalida B, Salsoso R, Barros E, Toledo F, Gutiérrez J, Pardo F, Sobrevia L. Tetrahydrobiopterin Role in human umbilical vein endothelial dysfunction in maternal supraphysiological hypercholesterolemia. Biochim Biophys Acta Mol Basis Dis 2016; 1862:536-544. [DOI: 10.1016/j.bbadis.2016.01.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 01/03/2016] [Accepted: 01/19/2016] [Indexed: 01/20/2023]
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Leiva A, Fuenzalida B, Westermeier F, Toledo F, Salomón C, Gutiérrez J, Sanhueza C, Pardo F, Sobrevia L. Role for Tetrahydrobiopterin in the Fetoplacental Endothelial Dysfunction in Maternal Supraphysiological Hypercholesterolemia. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:5346327. [PMID: 26697136 PMCID: PMC4677232 DOI: 10.1155/2016/5346327] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 08/23/2015] [Indexed: 02/07/2023]
Abstract
Maternal physiological hypercholesterolemia occurs during pregnancy, ensuring normal fetal development. In some cases, the maternal plasma cholesterol level increases to above this physiological range, leading to maternal supraphysiological hypercholesterolemia (MSPH). This condition results in endothelial dysfunction and atherosclerosis in the fetal and placental vasculature. The fetal and placental endothelial dysfunction is related to alterations in the L-arginine/nitric oxide (NO) pathway and the arginase/urea pathway and results in reduced NO production. The level of tetrahydrobiopterin (BH4), a cofactor for endothelial NO synthase (eNOS), is reduced in nonpregnant women who have hypercholesterolemia, which favors the generation of the superoxide anion rather than NO (from eNOS), causing endothelial dysfunction. However, it is unknown whether MSPH is associated with changes in the level or metabolism of BH4; as a result, eNOS function is not well understood. This review summarizes the available information on the potential link between MSPH and BH4 in causing human fetoplacental vascular endothelial dysfunction, which may be crucial for understanding the deleterious effects of MSPH on fetal growth and development.
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Affiliation(s)
- Andrea Leiva
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile
| | - Bárbara Fuenzalida
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile
| | - Francisco Westermeier
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical & Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, 8380492 Santiago, Chile
- Faculty of Science, Universidad San Sebastián, 7510157 Santiago, Chile
| | - Fernando Toledo
- Department of Basic Sciences, Faculty of Sciences, Universidad del Bío-Bío, 3780000 Chillán, Chile
| | - Carlos Salomón
- University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine and Biomedical Sciences, University of Queensland, Herston, QLD 4029, Australia
| | - Jaime Gutiérrez
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile
- Cellular Signaling and Differentiation Laboratory (CSDL), Health Sciences Faculty, Universidad San Sebastian, 7510157 Santiago, Chile
| | - Carlos Sanhueza
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile
| | - Fabián Pardo
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile
| | - Luis Sobrevia
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile
- University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine and Biomedical Sciences, University of Queensland, Herston, QLD 4029, Australia
- Department of Physiology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain
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