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Silveira THR, Calmasini FB, de Oliveira MG, Costa FF, Silva FH. Targeting heme in sickle cell disease: new perspectives on priapism treatment. Front Physiol 2024; 15:1435220. [PMID: 39086934 PMCID: PMC11288928 DOI: 10.3389/fphys.2024.1435220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Accepted: 06/26/2024] [Indexed: 08/02/2024] Open
Abstract
Men with sickle cell disease (SCD) frequently experience priapism, defined as prolonged, painful erections occurring without sexual arousal or desire. This urological emergency can lead to penile fibrosis and permanent erectile dysfunction if not treated adequately. Due to its complex pathophysiology, there is currently no effective preventative treatment for this condition. Recent studies have highlighted the dysfunction of the nitric oxide (NO) and cyclic guanosine monophosphate (cGMP) pathway in erectile tissues as a critical mechanism in developing priapism in SCD. Additionally, further research indicates that intravascular hemolysis promotes increased smooth muscle relaxation in the corpus cavernosum and that excess heme may significantly contribute to priapism in SCD. Pharmacological treatments should ideally target the pathophysiological basis of the disease. Agents that reduce excess free heme in the plasma have emerged as potential therapeutic candidates. This review explores the molecular mechanisms underlying the excess of heme in SCD and its contribution to developing priapism. We discuss pharmacological approaches targeting the excess free heme in the plasma, highlighting it as a potential therapeutic target for future interventions in managing priapism.
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Affiliation(s)
| | - Fabiano Beraldi Calmasini
- Escola Paulista de Medicina, Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - Fábio Henrique Silva
- Laboratory of Pharmacology, São Francisco University Medical School, Bragança Paulista, Brazil
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2
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Vallée A. Associations between smoking and alcohol consumption with blood pressure in a middle-aged population. Tob Induc Dis 2023; 21:61. [PMID: 37215190 PMCID: PMC10193384 DOI: 10.18332/tid/162440] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 03/20/2023] [Accepted: 03/23/2023] [Indexed: 05/24/2023] Open
Abstract
INTRODUCTION Inconsistent association between tobacco smoking, alcohol consumption and hypertension have been highlighted. The purpose of our study was to investigate the associations between smoking use and alcohol with systolic and diastolic blood pressure (SBP, DBP) and hypertension in a middle-aged population. METHODS Smoking status was based on smoking pack-years and cigarettes per day, and alcohol consumption was measured in units/day. Gender associations between smoking and alcohol consumption with BP and hypertension were estimated using multiple linear regressions. Synergistic effects between smoking and alcohol were investigating in both genders. RESULTS A total of 290913 individuals of the UK Biobank population were included (133950 men and 156963 women). Current smoking was significantly associated with lower SBP, DBP and lower hypertension prevalence, in both genders (p<0.001). However, cigarettes per day were associated with higher SBP in men current smokers [B=0.05 (0.02), p<0.001] with higher hypertension (p=0.001) but not with DBP (p=0.205). Similar results were observed in women current smokers [SBP: B=0.10 (0.02), p<0.001; DBP, p=0.217 and hypertension, p=0.019]. The number of smoking pack-years was only associated with higher levels in SBP in men (p=0.047) and in women (p<0.001). In both genders, alcohol consumption was associated with higher SBP, DBP and hypertension (p<0.001). Synergistic effects were observed for alcohol consumption on smoking pack-years and cigarettes per day with SBP and DBP. CONCLUSIONS Smoking and alcohol were associated with higher BP in current smokers with synergistic effects. The findings suggest the importance of considering smoking and alcohol consumption in BP control in addition to antihypertensive medication and public health practice.
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Affiliation(s)
- Alexandre Vallée
- Department of Epidemiology-Data-Biostatistics, Delegation of Clinical Research and Innovation (DRCI), Foch Hospital, France
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3
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Ye W, Steenland K, Quinn A, Liao J, Balakrishnan K, Rosa G, Ndagijimana F, Ntivuguruzwa JDD, Thompson LM, McCracken JP, Díaz-Artiga A, Rosenthal JP, Papageorghiou A, Davila-Roman VG, Pillarisetti A, Johnson M, Wang J, Nicolaou L, Checkley W, Peel JL, Clasen TF. Effects of a Liquefied Petroleum Gas Stove Intervention on Gestational Blood Pressure: Intention-to-Treat and Exposure-Response Findings From the HAPIN Trial. Hypertension 2022; 79:1887-1898. [PMID: 35708015 PMCID: PMC9278708 DOI: 10.1161/hypertensionaha.122.19362] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Approximately 3 to 4 billion people worldwide are exposed to household air pollution, which has been associated with increased blood pressure (BP) in pregnant women in some studies. METHODS We recruited 3195 pregnant women in Guatemala, India, Peru, and Rwanda and randomly assigned them to intervention or control groups. The intervention group received a gas stove and fuel during pregnancy, while the controls continued cooking with solid fuels. We measured BP and personal exposure to PM2.5, black carbon and carbon monoxide 3× during gestation. We conducted an intention-to-treat and exposure-response analysis to determine if household air pollution exposure was associated with increased gestational BP. RESULTS Median 24-hour PM2.5 dropped from 84 to 24 μg/m3 after the intervention; black carbon and carbon monoxide decreased similarly. Intention-to-treat analyses showed an increase in systolic BP and diastolic BP in both arms during gestation, as expected, but the increase was greater in intervention group for both systolic BP (0.69 mm Hg [0.03-1.35]; P=0.04) and diastolic BP (0.62 mm Hg [0.05-1.19]; P=0.03). The exposure-response analyses suggested that higher exposures to household air pollution were associated with moderately higher systolic BP and diastolic BP; however, none of these associations reached conventional statistical significance. CONCLUSIONS In intention-to-treat, we found higher gestational BP in the intervention group compared with controls, contrary to expected. In exposure-response analyses, we found a slight increase in BP with higher exposure, but it was not statistically significant. Overall, an intervention with gas stoves did not markedly affect gestational BP.
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Affiliation(s)
- Wenlu Ye
- Gangarosa Department of Environmental Health, Rollins School of Public Health (W.Y., K.S., A. Pillarisetti, T.F.C.), Emory University, Atlanta, GA.,Environmental Health Sciences, School of Public Health, University of California, Berkeley (W.Y., A. Pillarisetti)
| | - Kyle Steenland
- Gangarosa Department of Environmental Health, Rollins School of Public Health (W.Y., K.S., A. Pillarisetti, T.F.C.), Emory University, Atlanta, GA
| | - Ashlinn Quinn
- Berkeley Air Monitoring Group, Berkeley, CA (A.Q., M.J.)
| | - Jiawen Liao
- Department of Population and Public Health Sciences, Keck School of Medicine of the University of Southern California, Los Angeles (J.L.)
| | - Kalpana Balakrishnan
- Department of Environmental Health Engineering, ICMR Center for Advanced Research on Air Quality, Climate and Health, Sri Ramachandra Institute for Higher Education and Research (Deemed University), Chennai, India (K.B.)
| | - Ghislaine Rosa
- Department of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, United Kingdom (G.R.)
| | | | | | - Lisa M. Thompson
- Nell Hodgson Woodruff School of Nursing (L.M.T.), Emory University, Atlanta, GA
| | - John P. McCracken
- Department of Environmental Health Sciences, University of Georgia, Athens (J.P.M.)
| | | | - Joshua P. Rosenthal
- Division of Epidemiology and Population Studies, Fogarty International Center, National Institutes of Health, Bethesda, MD (J.P.R.)
| | - Aris Papageorghiou
- Nuffield Department of Women’s and Reproductive Health, University of Oxford, United Kingdom (A. Papageorghiou)
| | | | - Ajay Pillarisetti
- Gangarosa Department of Environmental Health, Rollins School of Public Health (W.Y., K.S., A. Pillarisetti, T.F.C.), Emory University, Atlanta, GA.,Environmental Health Sciences, School of Public Health, University of California, Berkeley (W.Y., A. Pillarisetti)
| | | | - Jiantong Wang
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health (J.W.), Emory University, Atlanta, GA
| | - Laura Nicolaou
- Division of Pulmonary and Critical Care, School of Medicine (L.N., W.C.), Johns Hopkins University, Baltimore, MD.,Center for Global Non-Communicable Disease Research and Training (L.N., W.C.), Johns Hopkins University, Baltimore, MD
| | - William Checkley
- Division of Pulmonary and Critical Care, School of Medicine (L.N., W.C.), Johns Hopkins University, Baltimore, MD.,Center for Global Non-Communicable Disease Research and Training (L.N., W.C.), Johns Hopkins University, Baltimore, MD
| | - Jennifer L. Peel
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins (J.L.P.)
| | - Thomas F. Clasen
- Gangarosa Department of Environmental Health, Rollins School of Public Health (W.Y., K.S., A. Pillarisetti, T.F.C.), Emory University, Atlanta, GA
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Amorim MR, Foresti R, Benrahla DE, Motterlini R, Branco LGS. CORM-401, an orally active carbon monoxide-releasing molecule, increases body temperature by activating non-shivering thermogenesis in rats. Temperature (Austin) 2022; 9:310-317. [PMID: 36339088 PMCID: PMC9629103 DOI: 10.1080/23328940.2022.2061270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Thermoregulation is critical in health and disease and is tightly controlled to maintain body temperature homeostasis. Carbon monoxide (CO), an endogenous gasotransmitter produced during heme degradation by heme oxygenases, has been suggested to play a role in body core temperature (Tb) regulation. However, a direct involvement of CO in thermoregulation has not been confirmed and its mechanism(s) of action remain largely unknown. In the present study we characterized the effects of systemic delivery of CO by administration of an orally active CO-releasing molecule (CORM-401) on Tb regulation in conscious freely moving rats. Specifically, we evaluated the main thermo effectors in rats treated with CORM-401 by assessing: (i) non-shivering thermogenesis, i.e. the increased metabolism of brown fat measured through oxygen consumption and (ii) the rate of heat loss from the tail through calculations of heat loss index. We found that oral administration of CORM-401 (30 mg/kg) resulted in augmented CO delivery into the blood circulation as evidenced a by significant increase in carbon monoxy hemoglobin levels(COHb). In addition, treatment with CORM-401 increased Tb, which was caused by an elevated non-shivering thermogenesis indicated by increased oxygen consumption without significant changes in the tail heat loss. On the other hand, CORM-401 did not affect blood pressure, but significantly decreased heart rate. In summary, the findings of the present study reveal that increased circulating CO levels lead to a rise in Tb, which could have important implications in the emerging role of CO in the modulation of energetic metabolism.
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Affiliation(s)
- Mateus R. Amorim
- Dental School of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Roberta Foresti
- Faculty of Health, University Paris Est Créteil, INSERM, IMRB, Créteil, France
| | | | - Roberto Motterlini
- Faculty of Health, University Paris Est Créteil, INSERM, IMRB, Créteil, France
| | - Luiz G. S. Branco
- Dental School of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Li W, Lee SH, Kim SH. Carbon monoxide releasing molecule-2 suppresses stretch-activated atrial natriuretic peptide secretion by activating large-conductance calcium-activated potassium channels. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY 2022; 26:125-133. [PMID: 35203062 PMCID: PMC8890946 DOI: 10.4196/kjpp.2022.26.2.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/18/2022] [Accepted: 01/18/2022] [Indexed: 11/15/2022]
Abstract
Carbon monoxide (CO) is a known gaseous bioactive substance found across a wide array of body systems. The administration of low concentrations of CO has been found to exert an anti-inflammatory, anti-apoptotic, anti-hypertensive, and vaso-dilatory effect. To date, however, it has remained unknown whether CO influences atrial natriuretic peptide (ANP) secretion. This study explores the effect of CO on ANP secretion and its associated signaling pathway using isolated beating rat atria. Atrial perfusate was collected for 10 min for use as a control, after which high atrial stretch was induced by increasing the height of the outflow catheter. Carbon monoxide releasing molecule-2 (CORM-2; 10, 50, 100 µM) and hemin (HO-1 inducer; 0.1, 1, 50 µM), but not CORM-3 (10, 50, 100 µM), decreased high stretch-induced ANP secretion. However, zinc porphyrin (HO-1 inhibitor) did not affect ANP secretion. The order of potency for the suppression of ANP secretion was found to be hemin > CORM-2 >> CORM-3. The suppression of ANP secretion by CORM-2 was attenuated by pretreatment with 5-hydroxydecanoic acid, paxilline, and 1H-[1,2,4] oxadiazolo [4,3-a] quinoxalin-1-one, but not by diltiazem, wortmannin, LY-294002, or NG-nitro-L-arginine methyl ester. Hypoxic conditions attenuated the suppressive effect of CORM-2 on ANP secretion. In sum, these results suggest that CORM-2 suppresses ANP secretion via mitochondrial KATP channels and large conductance Ca2+-activated K+ channels.
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Affiliation(s)
- Weijian Li
- Departments of Physiology, Jeonbuk National University Medical School, Jeonju 54907, Korea
| | - Sun Hwa Lee
- Departments of Internal Medicine, Jeonbuk National University Medical School, Jeonju 54907, Korea
- Research Institute of Clinical Medicine of Jeonbuk National University Jeonju 54907, Korea
| | - Suhn Hee Kim
- Departments of Physiology, Jeonbuk National University Medical School, Jeonju 54907, Korea
- Research Institute of Clinical Medicine of Jeonbuk National University Jeonju 54907, Korea
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Wu CM, Adetona O, Song C. Acute cardiovascular responses of wildland firefighters to working at prescribed burn. Int J Hyg Environ Health 2021; 237:113827. [PMID: 34403889 DOI: 10.1016/j.ijheh.2021.113827] [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: 03/25/2021] [Revised: 08/05/2021] [Accepted: 08/10/2021] [Indexed: 10/20/2022]
Abstract
Wildland firefighters at prescribed burns are exposed to elevated levels of wildland fire smoke (WFS) while performing physically demanding tasks. WFS exposure has been linked to increases in hospital and emergency admissions for cardiovascular disorders in the general population. However, knowledge about the cardiovascular effect of occupational WFS exposure among wildland firefighters is limited. To provide a better understanding of the effect of this exposure scenario on acute hemodynamic responses, resting systolic/diastolic blood pressure (SBP/DBP) and heart rate (HR) of wildland firefighters were measured before (pre-shift), after (post-shift), and the morning (next morning) immediately following prescribed burn shifts (burn days) and regular work shifts (non-burn days). A total of 38 firefighters (34 males and 4 females) participated in this study and resting BP and HR were recorded on 9 burn days and 7 non-burn days. On burn days, HR significantly increased from pre-to post-shift (13.25 bpm, 95% CI: 7.47 to 19.02 bpm) while SBP significantly decreased in the morning following the prescribed burns compared to pre-shift (-6.25 mmHg, 95% CI: -12.30 to -0.20 mmHg). However, this was due to the decrease of SBP in the firefighters who were hypertensive (-8.46 mmHg, 95% CI: -16.08 to -0.84 mmHg). Significant cross-shift reductions (post-shift/next morning vs. pre-shift) were observed in SBP on burn days compared to non-burn days (-7.01 mmHg, 95% CI: -10.94 to -3.09 mmHg and -8.64 mmHg, 95% CI: -13.81 to -3.47 mmHg, respectively). A significant reduction on burn days was also observed from pre-shift to the following morning for HR compared to non-burn days (-7.28 bpm, 95% CI: -13.50 to -1.06 bpm) while HR significantly increased in pre-to post-shift on burn days compared to non-burn days (10.61 bpm, 95% CI: 5.05 to 16.17 bpm). The decreased BP observed in wildland firefighters might be due to a high level of carbon monoxide exposure and exercise-induced hypotension. The increase in HR immediately after prescribed burns might be attributable to WFS exposure and physical exertion in prescribed burn shifts. The results suggest that wildland firefighting exposure might cause a distinct hemodynamic response, including SBP reduction and HR increment, especially for those who have pre-existing hypertension.
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Affiliation(s)
- Chieh-Ming Wu
- Division of Environmental Health Sciences, College of Public Health, The Ohio State University, Columbus, OH, USA.
| | - Olorunfemi Adetona
- Division of Environmental Health Sciences, College of Public Health, The Ohio State University, Columbus, OH, USA
| | - Chi Song
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, OH, USA
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Hsu CN, Tain YL. Gasotransmitters for the Therapeutic Prevention of Hypertension and Kidney Disease. Int J Mol Sci 2021; 22:ijms22157808. [PMID: 34360574 PMCID: PMC8345973 DOI: 10.3390/ijms22157808] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 02/07/2023] Open
Abstract
Nitric oxide (NO), carbon monoxide (CO), and hydrogen sulfide (H2S), three major gasotransmitters, are involved in pleiotropic biofunctions. Research on their roles in hypertension and kidney disease has greatly expanded recently. The developing kidney can be programmed by various adverse in utero conditions by so-called renal programming, giving rise to hypertension and kidney disease in adulthood. Accordingly, early gasotransmitter-based interventions may have therapeutic potential to revoke programming processes, subsequently preventing hypertension and kidney disease of developmental origins. In this review, we describe the current knowledge of NO, CO, and H2S implicated in pregnancy, including in physiological and pathophysiological processes, highlighting their key roles in hypertension and kidney disease. We summarize current evidence of gasotransmitter-based interventions for prevention of hypertension and kidney disease in animal models. Continued study is required to assess the interplay among the gasotransmitters NO, CO, and H2S and renal programming, as well as a greater focus on further clinical translation.
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Affiliation(s)
- Chien-Ning Hsu
- Department of Pharmacy, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan;
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - You-Lin Tain
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
- Institute for Translational Research in Biomedicine, College of Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, Kaohsiung 833, Taiwan
- Correspondence: ; Tel.: +886-975-056-995; Fax: +886-7733-8009
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Takemoto M, Sakamoto H, Higashimoto Y, Taira J. Complex Formation of Heme Oxygenase-2 with Heme Is Competitively Inhibited by the Cytosolic Domain of Caveolin-1. Biochemistry 2021; 60:2300-2308. [PMID: 34223768 DOI: 10.1021/acs.biochem.1c00247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism and physiological functions of heme oxygenase-2 (HO-2)-mediated carbon monoxide (CO) production, accompanied by heme metabolism, have been studied intensively in recent years. The enzymatic activity of constitutively expressed HO-2 must be strictly controlled in terms of the toxicity and chemical stability of CO. In this study, the molecular interaction between HO-2 and caveolin-1 and its effect on HO action were evaluated. An enzyme kinetics assay with residues 82-101 of caveolin-1, also called the caveolin scaffold domain, inhibited HO-2 activity in a competitive manner. Analytical ultracentrifugation and a hemin titration assay suggested that the inhibitory effect was generated by direct binding of caveolin-1 to aromatic residues, which were defined as components of the caveolin-binding motif in the HO-2 heme pocket. Herein, we developed a HO-2-based fluorescence bioprobe, namely EGFP-Δ19/D159H, which was capable of quantifying heme binding by HO-2 as the initial step in the CO production. The fluorescence of EGFP-Δ19/D159H decreased in accordance with 5-aminolevulinic acid-facilitated heme biosynthesis in COS-7 cells. In contrast, expression of the N-terminal cytosolic domain of caveolin-1 (residues 1-101) increased the probe fluorescence, suggesting that the cytosolic domain of caveolin-1 potently inhibits the binding of heme to the heme pocket of EGFP-Δ19/D159H. Taken together, our results suggest that caveolin-1 is a negative regulator of HO-2 enzymatic action. Moreover, our bioprobe EGFP-Δ19/D159H represents a powerful tool for use in future studies addressing HO-2-mediated CO production.
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Affiliation(s)
- Misaki Takemoto
- Department of Bioscience and Bioinformatics, Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology, Iizuka 820-8502, Japan
| | - Hiroshi Sakamoto
- Department of Bioscience and Bioinformatics, Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology, Iizuka 820-8502, Japan
| | - Yuichiro Higashimoto
- Department of Chemistry, Kurume University School of Medicine, Kurume 830-0011, Japan
| | - Junichi Taira
- Department of Bioscience and Bioinformatics, Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology, Iizuka 820-8502, Japan.,Department of Chemistry, Kurume University School of Medicine, Kurume 830-0011, Japan
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Choi YK, Kim YM. Regulation of Endothelial and Vascular Functions by Carbon Monoxide via Crosstalk With Nitric Oxide. Front Cardiovasc Med 2021; 8:649630. [PMID: 33912601 PMCID: PMC8071856 DOI: 10.3389/fcvm.2021.649630] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/16/2021] [Indexed: 12/21/2022] Open
Abstract
Carbon monoxide (CO), generated by heme oxygenase (HO), has been considered a signaling molecule in both the cardiovascular and central nervous systems. The biological function of the HO/CO axis is mostly related to other gaseous molecules, including nitric oxide (NO), which is synthesized by nitric oxide synthase (NOS). Healthy blood vessels are essential for the maintenance of tissue homeostasis and whole-body metabolism; however, decreased or impaired vascular function is a high-risk factor of cardiovascular and neuronal diseases. Accumulating evidence supports that the interplay between CO and NO plays a crucial role in vascular homeostasis and regeneration by improving endothelial function. Moreover, endothelial cells communicate with neighboring cells, such as, smooth muscle cells, immune cells, pericytes, and astrocytes in the periphery and neuronal vascular systems. Endogenous CO could mediate the cell-cell communication and improve the physiological functions of the cardiovascular and neurovascular systems via crosstalk with NO. Thus, a forward, positive feedback circuit between HO/CO and NOS/NO pathways can maintain cardiovascular and neurovascular homeostasis and prevent various human diseases. We discussed the crucial role of CO-NO crosstalk in the cardiovascular and neurovascular systems.
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Affiliation(s)
- Yoon Kyung Choi
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, South Korea
| | - Young-Myeong Kim
- Department of Molecular and Cellular Biochemistry, School of Medicine, Kangwon National University, Chuncheon, South Korea
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Khajavi A, Tamehri Zadeh SS, Azizi F, Brook RD, Abdi H, Zayeri F, Hadaegh F. Impact of short- and long-term exposure to air pollution on blood pressure: A two-decade population-based study in Tehran. Int J Hyg Environ Health 2021; 234:113719. [PMID: 33677362 DOI: 10.1016/j.ijheh.2021.113719] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 02/13/2021] [Accepted: 02/14/2021] [Indexed: 12/01/2022]
Abstract
Plenty of recent studies on the impact of air pollution on blood pressure (BP) exist; however, there is a lack of data for the highly polluted Eastern Mediterranean region. We evaluated the associations of short-term exposure to air pollutants with systolic BP (SBP) and diastolic BP (DBP) and the long-term impact of air pollutants on incident hypertension, among Tehranian adults. In the Tehran Lipid and Glucose Study, 4580 nonhypertensive participants aged 20-69 years (41.6% male) were followed from 2001 to 2018 through 3-year follow-ups and 4-5 examinations of them were recorded. The air pollutants included particulate matter with a diameter ≤10 μm (PM10), carbon monoxide (CO), ozone (O3), nitrogen dioxide (NO2), and sulfur dioxide (SO2). The mixed-effects transition model estimated the air pollution impact on BP. The proportional hazards Weibull model measured the long-term effects of air pollutants on the multivariate hazard of incident hypertension. The air pollutants were put in the models in the form of mean annual level, applying three versions of 1, 2, and 3 years before the follow-ups. During a median follow-up of 12.3 years, 1618 cases of hypertension were found. In the short-term, increase in CO did not affect SBP but decreased DBP with a delay effect lasting for 14 days; increase in NO2 raised SBP with a 14-day lag, however did not change DBP; increase in O3 reduced SBP with a 14-day lag but made slight non-significant increase in DBP; rise in PM10 concentrations led to increased SBP (lag 0-3 days) and DBP with lags of 0-3 days and 12-14 days and increase in SO2 made the largest increases in DBP with lags lasting for 14 days, but did not affect SBP. Regarding incident hypertension in the long-term, the increase in CO had no significant effect; increase in NO2 decreased the risk over the 2- and 3-year time spans; rise in O3, PM10, and SO2 levels increased the risk in all time spans; the largest hazard ratio [1.96 (95% CI: 1.48, 2.62)] for incident hypertension was attributable to PM10 in 3 years. Considering the major effects of air pollutants including O3, SO2, and especially PM10 on incident hypertension, urgent public health policies should be implemented to reduce the burden of air pollution in metropolitan city of Tehran.
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Affiliation(s)
- Alireza Khajavi
- Student Research Committee, Department of Biostatistics, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Prevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Robert D Brook
- Division of Cardiovascular Diseases, Wayne State University, Detroit, MI, USA
| | - Hengameh Abdi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farid Zayeri
- Department of Biostatistics, Proteomics Research Center, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farzad Hadaegh
- Prevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Sarutipaiboon I, Settasatian N, Komanasin N, Kukongwiriyapan U, Sawanyawisuth K, Intharaphet P, Senthong V, Settasatian C. Association of Genetic Variations in NRF2, NQO1, HMOX1, and MT with Severity of Coronary Artery Disease and Related Risk Factors. Cardiovasc Toxicol 2020; 20:176-189. [PMID: 31332605 DOI: 10.1007/s12012-019-09544-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
NRF2 is a transcription factor which, during oxidative stress, activates transcription of its target antioxidant genes. Polymorphisms in NRF2 and its target antioxidant genes: HMOX-1, NQO1, and MT, have been associated with cardiovascular diseases (CVDs) and diabetes in various ethnic groups, however, with variable results. The aim of this study was to investigate the association of NRF2, HMOX-1, NQO1, and MT gene polymorphisms with CVD risk factors in Thais. The study was conducted in two groups: group with high-risk for coronary artery disease (CAD) and health check-up group. Polymorphisms in NRF2 (rs6721961), NQO1 (rs1800566), MT1A (rs11640851), and HMOX-1 (rs2071746) were genotyped. Expressions of NRF2, HMOX-1, and NQO1 were also determined. In high-risk group, NRF2 rs6721961-TT was associated with CAD [OR (95% CI) 5.07 (1.42-18.10)] and severity of coronary atherosclerosis [Gensini score > 32, OR (95% CI) 4.31 (1.67-11.09)]; rs6721961 GT and TT revealed significant association with lower mRNA expression than GG (p = 0.021). NQO1 rs1800566 also revealed association with CAD, only in female. Combined effect of NQO1-rs1800566, HMOX1-rs2071746, and MT1A-rs11640851 was evaluated on the risks of DM and hypertension. With a combination of risk alleles as genetic risk score (GRS), the highest GRS (score 6) increased risk for hypertension, comparing with GRS 0-2 [OR (95% CI) 1.89 (1.02-3.49)]; group with score 5-6 revealed association with risk of DM [OR (95% CI) 1.481 (1.08-2.04)]. In conclusion, NRF2 rs6721961 associated with CAD and severity of coronary atherosclerosis. NQO1 rs1800566 also associated with CAD, only in female. Combined polymorphisms of three NRF2-regulated genes increased risk of DM and hypertension.
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Affiliation(s)
- Ingkarat Sarutipaiboon
- Biomedical Sciences Program, Graduate School, Khon Kaen University, Khon Kaen, 40002, Thailand.,Cardiovascular Research Group, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Nongnuch Settasatian
- School of Medical Technology, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, 40002, Thailand.,Cardiovascular Research Group, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Nantarat Komanasin
- School of Medical Technology, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, 40002, Thailand.,Cardiovascular Research Group, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Upa Kukongwiriyapan
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Cardiovascular Research Group, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Kittisak Sawanyawisuth
- Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Phongsak Intharaphet
- Queen Sirikit Heart Center of the Northeast Hospital, Khon Kaen University, Khon Kaen, 40002, Thailand.,Cardiovascular Research Group, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Vichai Senthong
- Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Queen Sirikit Heart Center of the Northeast Hospital, Khon Kaen University, Khon Kaen, 40002, Thailand.,Cardiovascular Research Group, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Chatri Settasatian
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Cardiovascular Research Group, Khon Kaen University, Khon Kaen, 40002, Thailand.
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12
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Kosmachevskaya OV, Nasybullina EI, Blindar VN, Topunov AF. Binding of Erythrocyte Hemoglobin to the Membrane to Realize Signal-Regulatory Function (Review). APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819020091] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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13
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Kosmachevskaya OV, Topunov AF. Alternate and Additional Functions of Erythrocyte Hemoglobin. BIOCHEMISTRY (MOSCOW) 2019; 83:1575-1593. [PMID: 30878032 DOI: 10.1134/s0006297918120155] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The review discusses pleiotropic effects of erythrocytic hemoglobin (Hb) and their significance for human health. Hemoglobin is mostly known as an oxygen carrier, but its biochemical functions are not limited to this. The following aspects of Hb functioning are examined: (i) catalytic functions of the heme component (nitrite reductase, NO dioxygenase, monooxygenase, alkylhydroperoxidase) and of the apoprotein (esterase, lipoxygenase); (ii) participation in nitric oxide metabolism; (iii) formation of membrane-bound Hb and its role in the regulation of erythrocyte metabolism; (iv) physiological functions of Hb catabolic products (iron, CO, bilirubin, peptides). Special attention is given to Hb participation in signal transduction in erythrocytes. The relationships between various erythrocyte metabolic parameters, such as oxygen status, ATP formation, pH regulation, redox balance, and state of the cytoskeleton are discussed with regard to Hb. Hb polyfunctionality can be considered as a manifestation of the principle of biochemical economy.
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Affiliation(s)
- O V Kosmachevskaya
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia
| | - A F Topunov
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia.
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14
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Li J, Zhang J, Zhang Q, Bai Z, Zhao Q, He D, Wang Z, Chen Y, Liu B. Syntheses and anti-cancer activity of CO-releasing molecules with targeting galactose receptors. Org Biomol Chem 2018; 16:8115-8129. [PMID: 30334056 DOI: 10.1039/c8ob01921e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CO-releasing molecules (CORMs) containing cobalt have many bioactivities, but most of them do not dissolve in water and have no selectivity to tissue and organs. On the basis of the specific recognition of galactose or sialic acid by a receptor, a series of CORMs based on carbohydrates were synthesized and evaluated. The test results show that all the complexes displayed anticancer activity. Among them, the effects of the complexes of galactose (1), GalNAc (8) and sialic acid (10) were very distinct. Complex 1 displayed higher activity against HeLa, HePG2, MCF-7 and HT-29 cell proliferation than cis-platin (DDP), and its selectivity was far much better than DDP compared with normal cell W138. Furthermore, the uptakes of complexes 1, 8 and 10 by HePG2, HT-29, A549 and RAW264.7 cell lines were studied. The uptake ratio of each cell line for complex 1 was different, and the order of uptake ratio in the four cell lines was HePG2 > HT-29 > RAW264.7 > A549. The HePG2 cells absorbed complex 1 beyond 60% after incubation for 8 h, while A549 absorbed only 27.8%. For complex 8, the uptake trend was similar to that of complex 1 with it being absorbed by all the four cancer cells, but the uptake rate was lower. However, differently, complex 10 was absorbed heavily by macrophage RAW264.7, followed by HePG2; after 8 h incubation, the uptake ratio of RAW264.7 was over 50%. In addition, the mechanism of action was explored, and the results showed that the complexes inhibited cell cycle arrest at the G2/M phase; complex 1 up-regulated the expression levels of caspase-3 and Bax, and down-regulated the Bcl-2 expression, giving rise to HePG2 cell apoptosis.
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Affiliation(s)
- Jili Li
- Institute of Medicinal Chemistry, School of Pharmacy of Lanzhou University, Lanzhou 730000, China.
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15
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Nrf2 in aging - Focus on the cardiovascular system. Vascul Pharmacol 2018; 112:42-53. [PMID: 30170173 DOI: 10.1016/j.vph.2018.08.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 08/09/2018] [Accepted: 08/20/2018] [Indexed: 02/07/2023]
Abstract
Aging is the most critical risk factor for the development of cardiovascular diseases and their complications. Therefore, the fine-tuning of cellular response to getting older is an essential target for prospective therapies in cardiovascular medicine. One of the most promising targets might be the transcription factor Nrf2, which drives the expression of cytoprotective and antioxidative genes. Importantly, Nrf2 expression correlates with potential lifespan in rodents. However, the effect of Nrf2 activity in vascular diseases might be ambiguous and strongly depend on the cell type. On the one hand, the Nrf2 activity may protect cells from oxidative stress and senescence, on the other hand, total lack of Nrf2 is protective against atherosclerosis development. Therefore, this review aims to discuss the current knowledge on the role played by the transcription factor Nrf2 in cardiovascular diseases and its potential effects on aging.
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16
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Koçer G, Nasircilar Ülker S, Şentürk ÜK. The contribution of carbon monoxide to vascular tonus. Microcirculation 2018; 25:e12495. [PMID: 30040171 DOI: 10.1111/micc.12495] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 06/15/2018] [Accepted: 07/18/2018] [Indexed: 01/27/2023]
Abstract
OBJECTIVE The aim of this descriptive study was to examine the contribution of CO in the maintenance of vascular tonus in different organs and different vessel segments; the underlying mechanism of CO-induced vasodilation was investigated. METHODS Sixty Wistar albino rats, aged 6-8 months, were used in this study. Response to CO by isolated arteries from the thoracic and abdominal aorta and mesenteric, renal, gastrocnemius, and gracilis muscles as well as heart, lung, and brain vascular beds was endogenously and exogenously studied using organ baths or myograph. In addition, HO-2 protein expression was assessed using Western blot analysis in isolated vessel segments. RESULTS Although CO was shown to contribute to the regulation of vascular tonus in all feed arteries except those of the gracilis vascular bed, no effect was observed in the resistance arteries, with the sole exception of the pial artery. No relationship between HO-2 protein level and CO contribution to endogenous vascular tonus was observed. CONCLUSIONS While the vasodilator effect of CO in vessels smaller than 600 μm in diameter was found to be mediated via potassium channels, in vessels larger than 600 μm in diameter, the effect was through both the potassium channels and the cGMP pathway.
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Affiliation(s)
- Günnur Koçer
- Department of Physiology, Medical Faculty, Near East University, Nicosia, Cyprus
| | | | - Ümit Kemal Şentürk
- Department of Physiology, Medical Faculty, Akdeniz University, Antalya, Turkey
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17
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Cardiovascular and inflammatory mechanisms in healthy humans exposed to air pollution in the vicinity of a steel mill. Part Fibre Toxicol 2018; 15:34. [PMID: 30097052 PMCID: PMC6086065 DOI: 10.1186/s12989-018-0270-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 07/25/2018] [Indexed: 12/20/2022] Open
Abstract
Background There is a paucity of mechanistic information that is central to the understanding of the adverse health effects of source emission exposures. To identify source emission-related effects, blood and saliva samples from healthy volunteers who spent five days near a steel plant (Bayview site, with and without a mask that filtered many criteria pollutants) and at a well-removed College site were tested for oxidative stress, inflammation and endothelial dysfunction markers. Methods Biomarker analyses were done using multiplexed protein-array, HPLC-Fluorescence, EIA and ELISA methods. Mixed effects models were used to test for associations between exposure, biological markers and physiological outcomes. Heat map with hierarchical clustering and Ingenuity Pathway Analysis (IPA) were used for mechanistic analyses. Results Mean CO, SO2 and ultrafine particles (UFP) levels on the day of biological sampling were higher at the Bayview site compared to College site. Bayview site exposures “without” mask were associated with increased (p < 0.05) pro-inflammatory cytokines (e.g IL-4, IL-6) and endothelins (ETs) compared to College site. Plasma IL-1β, IL-2 were increased (p < 0.05) after Bayview site “without” compared to “with” mask exposures. Interquartile range (IQR) increases in CO, UFP and SO2 were associated with increased (p < 0.05) plasma pro-inflammatory cytokines (e.g. IL-6, IL-8) and ET-1(1–21) levels. Plasma/saliva BET-1 levels were positively associated (p < 0.05) with increased systolic BP. C-reactive protein (CRP) was positively associated (p < 0.05) with increased heart rate. Protein network analyses exhibited activation of distinct inflammatory mechanisms after “with” and “without” mask exposures at the Bayview site relative to College site exposures. Conclusions These findings suggest that air pollutants in the proximity of steel mill site can influence inflammatory and vascular mechanisms. Use of mask and multiple biomarker data can be valuable in gaining insight into source emission-related health impacts. Electronic supplementary material The online version of this article (10.1186/s12989-018-0270-4) contains supplementary material, which is available to authorized users.
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18
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Spencer CS, Yunta C, de Lima GPG, Hemmings K, Lian LY, Lycett G, Paine MJI. Characterisation of Anopheles gambiae heme oxygenase and metalloporphyrin feeding suggests a potential role in reproduction. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2018; 98:25-33. [PMID: 29729387 DOI: 10.1016/j.ibmb.2018.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/23/2018] [Accepted: 04/29/2018] [Indexed: 06/08/2023]
Abstract
The mosquito Anopheles gambiae is the principal vector for malaria in sub-Saharan Africa. The ability of A. gambiae to transmit malaria is strictly related to blood feeding and digestion, which releases nutrients for oogenesis, as well as substantial amounts of highly toxic free heme. Heme degradation by heme oxygenase (HO) is a common protective mechanism, and a gene for HO exists in the An. gambiae genome HO (AgHO), although it has yet to be functionally examined. Here, we have cloned and expressed An. gambiae HO (AgHO) in E. coli. Purified recombinant AgHO bound hemin stoichiometrically to form a hemin-enzyme complex similar to other HOs, with a KD of 3.9 ± 0.6 μM; comparable to mammalian and bacterial HOs, but 7-fold lower than that of Drosophila melanogaster HO. AgHO also degraded hemin to biliverdin and released CO and iron in the presence of NADPH cytochrome P450 oxidoreductase (CPR). Optimal AgHO activity was observed at 27.5 °C and pH 7.5. To investigate effects of AgHO inhibition, adult female A. gambiae were fed heme analogues Sn- and Zn-protoporphyrins (SnPP and ZnPP), known to inhibit HO. These led to a dose dependent decrease in oviposition. Cu-protoporphyrin (CuPP), which does not inhibit HO had no effect. These results demonstrate that AgHO is a catalytically active HO and that it may play a key role in egg production in mosquitoes. It also presents a potential target for the development of compounds aimed at sterilising mosquitoes for vector control.
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Affiliation(s)
| | - Cristina Yunta
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | | | - Kay Hemmings
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | - Lu-Yun Lian
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Gareth Lycett
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | - Mark J I Paine
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.
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19
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Pinto M, Chakraborty I, Martinez-Gonzalez J, Mascharak P. Synthesis and structures of photoactive rhenium carbonyl complexes derived from 2-(pyridin-2-yl)-1,3-benzothiazole, 2-(quinolin-2-yl)-1,3-benzothiazole and 1,10-phenanthroline. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2017; 73:923-929. [PMID: 29111520 DOI: 10.1107/s2053229617014644] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 10/10/2017] [Indexed: 11/10/2022]
Abstract
Carbon monoxide (CO) has recently been identified as a gaseous signaling molecule that exerts various salutary effects in mammalian pathophysiology. Photoactive metal carbonyl complexes (photoCORMs) are ideal exogenous candidates for more controllable and site-specific CO delivery compared to gaseous CO. Along this line, our group has been engaged for the past few years in developing group-7-based photoCORMs towards the efficient eradication of various malignant cells. Moreover, several such complexes can be tracked within cancerous cells by virtue of their luminescence. The inherent luminecscent nature of some photoCORMs and the change in emission wavelength upon CO release also provide a covenient means to track the entry of the prodrug and, in some cases, both the entry and CO release from the prodrug. In continuation of the research circumscribing the development of trackable photoCORMs and also to graft such molecules covalently to conventional delivery vehicles, we report herein the synthesis and structures of three rhenium carbonyl complexes, namely, fac-tricarbonyl[2-(pyridin-2-yl)-1,3-benzothiazole-κ2N,N'](4-vinylpyridine-κN)rhenium(I) trifluoromethanesulfonate, [Re(C7H7N)(C12H8N2S)(CO)3](CF3SO3), (1), fac-tricarbonyl[2-(quinolin-2-yl)-1,3-benzothiazole-κ2N,N'](4-vinylpyridine-κN)rhenium(I) trifluoromethanesulfonate, [Re(C7H7N)(C16H10N2S)(CO)3](CF3SO3), (2), and fac-tricarbonyl[1,10-phenanthroline-κ2N,N'](4-vinylpyridine-κN)rhenium(I) trifluoromethanesulfonate, [Re(C7H7N)(C12H8N2)(CO)3](CF3SO3), (3). In all three complexes, the ReI center resides in a distorted octahedral coordination environment. These complexes exhibit CO release upon exposure to low-power UV light. The apparent CO release rates of the complexes have been measured to assess their comparative CO-donating capacity. The three complexes are highly luminescent and this in turn provides a convenient way to track the entry of the prodrug molecules within biological targets.
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Affiliation(s)
- Miguel Pinto
- Department of Chemistry & Biochemistry, Univeristy of California Santa Cruz, CA 95064, USA
| | - Indranil Chakraborty
- Department of Chemistry & Biochemistry, Univeristy of California Santa Cruz, CA 95064, USA
| | | | - Pradip Mascharak
- Department of Chemistry & Biochemistry, Univeristy of California Santa Cruz, CA 95064, USA
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Pinto MN, Chakraborty I, Sandoval C, Mascharak PK. Eradication of HT-29 colorectal adenocarcinoma cells by controlled photorelease of CO from a CO-releasing polymer (photoCORP-1) triggered by visible light through an optical fiber-based device. J Control Release 2017; 264:192-202. [PMID: 28866022 DOI: 10.1016/j.jconrel.2017.08.039] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 08/06/2017] [Accepted: 08/29/2017] [Indexed: 10/18/2022]
Abstract
The gaseous signaling molecule carbon monoxide (CO) has recently been recognized for its wide range of physiological activity as well as its antineoplastic properties. However, site-specific delivery of this noxious gas presents a major challenge in hospital settings. In this work, a visible light-sensitive CO-releasing molecule (photoCORM) derived from manganese(I) and 2-(quinolyl)benzothiazole (qbt) namely, [Mn(CO)3(qbt)(4-vpy)](CF3SO3) (1), has been co-polymerized within a gas-permeable HEMA/EGDMA hydrogel. The resulting photoactive CO-releasing polymer (photoCORP-1) incorporates 1 such that neither the carbonyl complex nor its photoproduct(s) exits the polymer at any time. The material can be triggered to photorelease CO remotely by low-power broadband visible light (<1mWcm-2) with the aid of fiber optics technology. The CO photorelease rates of photoCORP-1 (determined by spectrophotometry) can be modulated by both the concentration of 1 in the hydrogel and the intensity of the light. A CO-delivery device has been assembled to deliver CO to a suspension of human colorectal adenocarcinoma cells (HT-29) under the control of visible light and the extent of CO-induced apoptotic death of the cancer cells has been determined via Annexin V/Propidium iodide stain and flow cytometry. This photoactive CO-releasing polymer could find use in delivering controlled doses of CO to cellular targets such as malignant tissues in remote parts of the body.
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Affiliation(s)
- Miguel N Pinto
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
| | - Indranil Chakraborty
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
| | - Cosme Sandoval
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
| | - Pradip K Mascharak
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA.
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Carbon monoxide does not contribute to vascular tonus improvement in exercise-trained rats with chronic nitric oxide synthase inhibition. Nitric Oxide 2017; 65:60-67. [DOI: 10.1016/j.niox.2017.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 02/13/2017] [Accepted: 02/27/2017] [Indexed: 11/20/2022]
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22
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Lee GW, Bae MJ, Yang JY, Son JW, Cho JL, Lee SG, Jang BM, Lee HW, Lim JS, Shin DC, Lim YW. Decreased blood pressure associated with in-vehicle exposure to carbon monoxide in Korean volunteers. Environ Health Prev Med 2017; 22:34. [PMID: 29165122 PMCID: PMC5664420 DOI: 10.1186/s12199-017-0622-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 02/09/2017] [Indexed: 02/08/2023] Open
Abstract
Background Carbon monoxide (CO) is one of the primary components of emissions from light-duty vehicles, and reportedly comprises 77% of all pollutants emitted in terms of concentration. Exposure to CO aggravates cardiovascular disease and causes other health disorders. The study was aimed to assess the negative effects by injecting different amounts of CO concentration directly to human volunteers boarding in the car. Methods Human volunteers were exposed to CO concentrations of 0, 33.2, and 72.4 ppm, respectively during the first test and 0, 30.3, and 48.8 ppm respectively during the second test while seated in the car. The volunteers were exposed to each concentration for approximately 45 min. After exposure, blood pressure measurement, blood collection (carboxyhemoglobin [COHb] analysis), medical interview, echocardiography test, and cognitive reaction test were performed. Result In patients who were exposed to a mean concentration of CO for 72.4 ± 1.4 ppm during the first exposure test and 48.8 ± 3.7 ppm during the second exposure test, the COHb level exceeded 2%. Moreover, the diastolic blood pressure was decreased while increasing in CO concentration after exposure. The medical interview findings showed that the degree of fatigue was increased and the degree of concentration was reduced when the exposed concentration of CO was increased. Conclusion Although the study had a limited sample size, we found that even a low concentration of CO flowing into a car could have a negative influence on human health, such as change of blood pressure and degree of fatigue.
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Affiliation(s)
- Geon-Woo Lee
- Department of Public Health, Graduate School, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea.,The Institute for Environmental Research, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea
| | - Mun-Joo Bae
- Graduate School of Public Health, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea
| | - Ji-Yeon Yang
- The Institute for Environmental Research, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea
| | - Jung-Woo Son
- Department of Preventive Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea
| | - Jae-Lim Cho
- Department of Occupational and Environmental Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - Sang-Gyu Lee
- The Institute for Environmental Research, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea
| | - Bo-Mi Jang
- The Institute for Environmental Research, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea
| | - Hyun-Woo Lee
- Korea Automobile Testing & Research Institute, 200 Samjon-ro, Songsan-myun, Hwaseong-si, Gyeonggi-do, Korea
| | - Jong-Soon Lim
- Korea Automobile Testing & Research Institute, 200 Samjon-ro, Songsan-myun, Hwaseong-si, Gyeonggi-do, Korea
| | - Dong-Chun Shin
- The Institute for Environmental Research, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea.,Department of Preventive Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea
| | - Young-Wook Lim
- The Institute for Environmental Research, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Korea.
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Abstract
Heme oxygenases are composed of two isozymes, Hmox1 and Hmox2, that catalyze the degradation of heme to carbon monoxide (CO), ferrous iron, and biliverdin, the latter of which is subsequently converted to bilirubin. While initially considered to be waste products, CO and biliverdin/bilirubin have been shown over the last 20 years to modulate key cellular processes, such as inflammation, cell proliferation, and apoptosis, as well as antioxidant defense. This shift in paradigm has led to the importance of heme oxygenases and their products in cell physiology now being well accepted. The identification of the two human cases thus far of heme oxygenase deficiency and the generation of mice deficient in Hmox1 or Hmox2 have reiterated a role for these enzymes in both normal cell function and disease pathogenesis, especially in the context of cardiovascular disease. This review covers the current knowledge on the function of both Hmox1 and Hmox2 at both a cellular and tissue level in the cardiovascular system. Initially, the roles of heme oxygenases in vascular health and the regulation of processes central to vascular diseases are outlined, followed by an evaluation of the role(s) of Hmox1 and Hmox2 in various diseases such as atherosclerosis, intimal hyperplasia, myocardial infarction, and angiogenesis. Finally, the therapeutic potential of heme oxygenases and their products are examined in a cardiovascular disease context, with a focus on how the knowledge we have gained on these enzymes may be capitalized in future clinical studies.
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Affiliation(s)
- Anita Ayer
- Vascular Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, Australia; and Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham Veterans Administration Medical Center, Birmingham, Alabama
| | - Abolfazl Zarjou
- Vascular Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, Australia; and Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham Veterans Administration Medical Center, Birmingham, Alabama
| | - Anupam Agarwal
- Vascular Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, Australia; and Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham Veterans Administration Medical Center, Birmingham, Alabama
| | - Roland Stocker
- Vascular Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, Australia; and Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham Veterans Administration Medical Center, Birmingham, Alabama
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Pan X, Zhang Y, Tao S. Effects of Tai Chi exercise on blood pressure and plasma levels of nitric oxide, carbon monoxide and hydrogen sulfide in real-world patients with essential hypertension. Clin Exp Hypertens 2014; 37:8-14. [DOI: 10.3109/10641963.2014.881838] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | - Yi Zhang
- Department of Physical Education and
| | - Sai Tao
- The First Affiliated Hospital, Huzhou Teachers College, Huzhou, Zhejiang, China
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25
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Ogaki S, Taguchi K, Watanabe H, Otagiri M, Maruyama T. Carbon Monoxide–Bound Red Blood Cells Protect Red Blood Cell Transfusion-Induced Hepatic Cytochrome P450 Impairment in Hemorrhagic-Shock Rats. Drug Metab Dispos 2012; 41:141-8. [DOI: 10.1124/dmd.112.048744] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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26
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Activation of heme oxygenase and suppression of cGMP are associated with impaired endothelial function in obstructive sleep apnea with hypertension. Am J Hypertens 2012; 25:854-61. [PMID: 22647785 DOI: 10.1038/ajh.2012.56] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is a highly prevalent disorder that increases the risk of systemic hypertension and cardiovascular diseases. Heme oxygenase (HO) has been shown to be upregulated in patients with OSA and its overexpression in mice causes hypertension. End products of HO are carbon monoxide (CO) and bilirubin. CO exerts a pleiotropic action on vasoregulation. Despite high prevalence and incident of hypertension in OSA, its pathophysiology is not well-understood, particularly in regard to varying susceptibility of patients to hypertension. We investigated the role of HO in endothelial dysfunction and hypertension in OSA. METHODS We determined flow-mediated vasodilatation (FMD) as a measure of endothelial-dependent vasodilatory capacity, exhaled CO, bilirubin, and guanosine 3',5'-cyclic monophosphate (cGMP) in 63 subjects with OSA (normotensive 27, hypertensive 36) and in 32 subjects without OSA (normotensive 19, hypertensive 13). RESULTS Hypertensive OSA demonstrated marked impairment in FMD (8.0 ± 0.5% vasodilatation) compared to 10.5 ± 0.8% in hypertensives non-OSA (P < 0.01) and 13.5 ± 0.5% in normotensive OSA (P < 0.001) and 16.1 ± 1.1% in normotensive non-OSA (P < 0.0001). HO was upregulated and plasma nitric oxide (NO) was significantly increased in hypertensive OSA compared to normotensive OSA and hypertensive non-OSA. Conversely, serum cGMP was markedly decreased in hypertensive OSA (12.9 ± 1.8 pmol/ml vs. 20.6 ± 3.7 in normotensive OSA, P = 0.032). There was an inverse relationship between FMD and CO and bilirubin concentrations (r = 0.43, P = 0.0001 and r = 0.28, P = 0.01, respectively). CONCLUSIONS These data show that increased CO in the setting of elevated NO concentrations is associated with decreased cGMP, impaired FMD, and hypertension in patient with OSA.
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27
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Ren Y, D'Ambrosio MA, Wang H, Falck JR, Peterson EL, Garvin JL, Carretero OA. Mechanisms of carbon monoxide attenuation of tubuloglomerular feedback. Hypertension 2012; 59:1139-44. [PMID: 22508834 DOI: 10.1161/hypertensionaha.112.192120] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Carbon monoxide (CO) is a physiological messenger with diverse functions in the kidney, including controlling afferent arteriole tone both directly and via tubuloglomerular feedback (TGF). We have reported that CO attenuates TGF, but the mechanisms underlying this effect remain unknown. We hypothesized that CO, acting via cGMP, cGMP-dependent protein kinase, and cGMP-stimulated phosphodiesterase 2, reduces cAMP in the macula densa, leading to TGF attenuation. In vitro, microdissected rabbit afferent arterioles and their attached macula densa were simultaneously perfused. TGF was measured as the decrease in afferent arteriole diameter elicited by switching macula densa NaCl from 10 to 80 mmol/L. Adding a CO-releasing molecule (CORM-3, 5 × 10(-5) mol/L) to the macula densa blunted TGF from 3.3 ± 0.3 to 2.0 ± 0.3 μm (P<0.001). The guanylate cyclase inhibitor LY-83583 (10(-6) mol/L) enhanced TGF (5.8 ± 0.6 μm; P<0.001 versus control) and prevented the effect of CORM-3 on TGF (LY-83583+CORM-3, 5.5 ± 0.3 μm). Similarly, the cGMP-dependent protein kinase inhibitor KT-5823 (2 × 10(-6) mol/L) enhanced TGF and prevented the effect of CORM-3 on TGF (KT-5823, 6.0 ± 0.7 μm; KT-5823+CORM-3, 5.9 ± 0.8 μm). However, the phosphodiesterase 2 inhibitor BAY-60-7550 (10(-6) mol/L) did not prevent the effect of CORM-3 on TGF (BAY-60-7550, 4.07 ± 0.31 μm; BAY-60-7550+CORM-3, 1.84 ± 0.31 μm; P<0.001). Finally, the degradation-resistant cAMP analog dibutyryl-cAMP (10(-3) mol/L) prevented the attenuation of TGF by CORM-3 (dibutyryl-cAMP, 4.6 ± 0.5 μm; dibutyryl-cAMP+CORM-3, 5.0 ± 0.6 μm). We conclude that CO attenuates TGF by reducing cAMP via a cGMP-dependent pathway mediated by cGMP-dependent protein kinase rather than phosphodiesterase 2. Our results will lead to a better understanding of the mechanisms that control the renal microcirculation.
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Affiliation(s)
- Yilin Ren
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, USA
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28
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Sodhi K, Puri N, Inoue K, Falck JR, Schwartzman ML, Abraham NG. EET agonist prevents adiposity and vascular dysfunction in rats fed a high fat diet via a decrease in Bach 1 and an increase in HO-1 levels. Prostaglandins Other Lipid Mediat 2011; 98:133-42. [PMID: 22209722 DOI: 10.1016/j.prostaglandins.2011.12.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 12/09/2011] [Accepted: 12/15/2011] [Indexed: 12/18/2022]
Abstract
Recent reports have shown interplay between EETs (epoxides) and the heme oxygenase (HO) system in attenuating adipogenesis in cell culture models; prompting an examination of the effectiveness of EET agonist on obesity and associated cardio-metabolic dysfunction. Patho-physiological effects of an EET agonist (NUDSA) were contrasted in the absence and in the presence of stannous mesoporphyrin (an HO inhibitor) in SD rats fed a high fat (58%, HF) for 16 weeks. Animals on HF diet exhibited enhanced oxidative stress, increased levels of inflammatory cytokines and decreased levels of adiponectin along with reduced vascular and adipose tissue levels of EETs, HO-1; as compared to control rats (11% dietary fat). Treatment with NUDSA not only reversed serum adiponectin and vascular and adipose tissue levels of EETs and HO-1, but also, decreased blood pressure, subcutaneous and visceral fat content and serum TNFα and IL-6 levels in rats on HF diet. Aortic endothelial function, peNOS expression and adipose tissue markers of energy homeostasis i.e. pAMPK, Sirt1 and FAS, impaired in rats fed a HF diet, were restored in animals treated with this EET agonist. That NUDSA enhanced HO-1 expression, was accompanied by increase in p-GSK-3β and pAKT levels along with attenuation of adipose tissue levels of Bach 1--the transcriptional suppresser of HO-1 expression. Prevention of these beneficial effects of NUDSA, in animals on HF diet and concurrently exposed to NUDSA and SnMP, supports the role of EET-HO interaction in mediating such effects. Taken together, our findings suggest that the EETs stimulate HO-1 expression via suppression of Bach 1 and interplay of these two systems affords vascular and metabolic protection in diet induced obesity.
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Affiliation(s)
- Komal Sodhi
- Department of Physiology and Pharmacology, The University of Toledo College of Medicine, Health Education Building, 3000 Arlington Avenue, Toledo, OH 43614-2598, USA
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29
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Kim YM, Pae HO, Park JE, Lee YC, Woo JM, Kim NH, Choi YK, Lee BS, Kim SR, Chung HT. Heme oxygenase in the regulation of vascular biology: from molecular mechanisms to therapeutic opportunities. Antioxid Redox Signal 2011; 14:137-67. [PMID: 20624029 PMCID: PMC2988629 DOI: 10.1089/ars.2010.3153] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Heme oxygenases (HOs) are the rate-limiting enzymes in the catabolism of heme into biliverdin, free iron, and carbon monoxide. Two genetically distinct isoforms of HO have been characterized: an inducible form, HO-1, and a constitutively expressed form, HO-2. HO-1 is a kind of stress protein, and thus regarded as a sensitive and reliable indicator of cellular oxidative stress. The HO system acts as potent antioxidants, protects endothelial cells from apoptosis, is involved in regulating vascular tone, attenuates inflammatory response in the vessel wall, and participates in angiogenesis and vasculogenesis. Endothelial integrity and activity are thought to occupy the central position in the pathogenesis of cardiovascular diseases. Cardiovascular disease risk conditions converge in the contribution to oxidative stress. The oxidative stress leads to endothelial and vascular smooth muscle cell dysfunction with increases in vessel tone, cell growth, and gene expression that create a pro-thrombotic/pro-inflammatory environment. Subsequent formation, progression, and obstruction of atherosclerotic plaque may result in myocardial infarction, stroke, and cardiovascular death. This background provides the rationale for exploring the potential therapeutic role for HO system in the amelioration of vascular inflammation and prevention of adverse cardiovascular outcomes.
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Affiliation(s)
- Young-Myeong Kim
- Vascular System Research Center and Department of Molecular and Cellular Biochemistry, School of Medicine, Kangwon National University, Chuncheon, Kangwon-do, South Korea
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30
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Kim YM, Pae HO, Park JE, Lee YC, Woo JM, Kim NH, Choi YK, Lee BS, Kim SR, Chung HT. Heme oxygenase in the regulation of vascular biology: from molecular mechanisms to therapeutic opportunities. Antioxid Redox Signal 2010. [PMID: 20624029 DOI: 10.1089/ars.2010.31532988629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Heme oxygenases (HOs) are the rate-limiting enzymes in the catabolism of heme into biliverdin, free iron, and carbon monoxide. Two genetically distinct isoforms of HO have been characterized: an inducible form, HO-1, and a constitutively expressed form, HO-2. HO-1 is a kind of stress protein, and thus regarded as a sensitive and reliable indicator of cellular oxidative stress. The HO system acts as potent antioxidants, protects endothelial cells from apoptosis, is involved in regulating vascular tone, attenuates inflammatory response in the vessel wall, and participates in angiogenesis and vasculogenesis. Endothelial integrity and activity are thought to occupy the central position in the pathogenesis of cardiovascular diseases. Cardiovascular disease risk conditions converge in the contribution to oxidative stress. The oxidative stress leads to endothelial and vascular smooth muscle cell dysfunction with increases in vessel tone, cell growth, and gene expression that create a pro-thrombotic/pro-inflammatory environment. Subsequent formation, progression, and obstruction of atherosclerotic plaque may result in myocardial infarction, stroke, and cardiovascular death. This background provides the rationale for exploring the potential therapeutic role for HO system in the amelioration of vascular inflammation and prevention of adverse cardiovascular outcomes.
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Affiliation(s)
- Young-Myeong Kim
- Vascular System Research Center and Department of Molecular and Cellular Biochemistry, School of Medicine, Kangwon National University, Chuncheon, Kangwon-do, South Korea
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31
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Abraham NG, Cao J, Sacerdoti D, Li X, Drummond G. Heme oxygenase: the key to renal function regulation. Am J Physiol Renal Physiol 2009; 297:F1137-52. [PMID: 19570878 PMCID: PMC2781329 DOI: 10.1152/ajprenal.90449.2008] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Accepted: 06/09/2009] [Indexed: 02/07/2023] Open
Abstract
Heme oxygenase (HO) plays a critical role in attenuating the production of reactive oxygen species through its ability to degrade heme in an enzymatic process that leads to the production of equimolar amounts of carbon monoxide and biliverdin/bilirubin and the release of free iron. The present review examines the beneficial role of HO-1 (inducible form of HO) that is achieved by increased expression of this enzyme in renal tissue. The influence of the HO system on renal physiology, obesity, vascular dysfunction, and blood pressure regulation is reviewed, and the clinical potential of increased levels of HO-1 protein, HO activity, and HO-derived end products of heme degradation is discussed relative to renal disease. The use of pharmacological and genetic approaches to investigate the role of the HO system in the kidney is key to the development of therapeutic approaches to prevent the adverse effects that accrue due to an impairment in renal function.
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Affiliation(s)
- Nader G Abraham
- New York Medical College, Department of Pharmacology, Valhalla, NY 10595, USA.
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32
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Olson KR, Donald JA. Nervous control of circulation--the role of gasotransmitters, NO, CO, and H2S. Acta Histochem 2009; 111:244-56. [PMID: 19128825 DOI: 10.1016/j.acthis.2008.11.004] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The origins and actions of gaseous signaling molecules, nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H(2)S) in the mammalian cardiovascular system have received considerable attention and it is evident that these three "gasotransmitters" perform a variety of homeostatic functions. The origins, actions and disposition of these gasotransmitters in the piscine vasculature are far from resolved. In most fish examined to date, NO or NO donors are generally in vitro and in vivo vasodilators acting via soluble guanylyl cyclase, although there is evidence for NO-mediated vasoconstriction. Injection of sodium nitroprusside into trout causes hypotension that is attributed to a reduction in systemic resistance. Unlike mammals, NO does not appear to have an endothelial origin in fish blood vessels as an endothelial NO synthase has not identified. However, neural NO synthase is prevalent in perivascular nerves and is the most likely source of NO for cardiovascular control in fish. CO is a vasodilator in lamprey and trout vessels, and it, like NO, appears to exert its action, at least in part, via guanylyl cyclase and potassium channel activation. Inhibition of CO production increases resting tone in trout vessels suggestive of tonic CO activity, but little else is known about the origin or control of CO in the fish vasculature. H(2)S is synthesized by fish vessels and its constrictory, dilatory, or even multi-phasic actions, are both species- and vessel-specific. A small component of H(2)S-mediated basal activity may be endothelial in origin, but to a large extent H(2)S affects vascular smooth muscle directly and the mechanisms are unclear. H(2)S injected into the dorsal aorta of unanesthetized trout often produces oscillations in arterial blood pressure suggestive of H(2)S activity in the central nervous system as well as peripheral vasculature. Collectively, these studies hint at significant involvement of the gasotransmitters in piscine cardiovascular function and hopefully provide a variety of avenues for future research.
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Affiliation(s)
- Kenneth R Olson
- Indiana University School of Medicine-South Bend, South Bend, IN 46617, USA.
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33
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da Costa-Goncalves AC, Tank J, Plehm R, Diedrich A, Todiras M, Gollasch M, Heuser A, Wellner M, Bader M, Jordan J, Luft FC, Gross V. Role of the Multidomain Protein Spinophilin in Blood Pressure and Cardiac Function Regulation. Hypertension 2008; 52:702-7. [DOI: 10.1161/hypertensionaha.108.114355] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Spinophilin controls intensity/duration of G protein-coupled receptor signaling and thereby influences synaptic activity. We hypothesize that spinophilin affects blood pressure through central mechanisms. We measured blood pressure and heart rate in SPL-deficient (SPL
−/−
), heterozygous SPL-deficient (SPL
+/−
), and wild-type (SPL
+/+
) mice by telemetry combined with fast Fourier transformation. We also assessed peripheral vascular reactivity and performed echocardiography. SPL
−/−
had higher mean arterial pressure than SPL
+/−
and SPL
+/+
(121±2, 112±1, and 113±1 mm Hg). Heart rate was inversely related to spinophilin expression (SPL
−/−
565±0.4, SPL
+/−
541±5, SPL
+/+
525±8 bpm). The blood pressure response to prazosin, trimethapane, and the heart rate response to metoprolol were stronger in SPL
−/−
than SPL
+/+
mice, whereas heart rate response to atropine was attenuated in SPL
−/−
. Mesenteric artery vasoreactivity after angiotensin II, phenylephrine, and the thromboxane mimetic (U46619) as well as change in heart rate, stroke volume, and cardiac output after dobutamine were similar in SPL
−/−
and SPL
+/+
. Baroreflex sensitivity was attenuated in SPL
−/−
compared with SPL
+/−
and SPL
+/+
, which was confirmed by pharmacological testing. Heart rate variability parameters were attenuated in SPL
−/−
mice. We suggest that an increase in central sympathetic outflow participates in blood pressure and heart rate increases in SPL
−/−
mice. The elevated blood pressure in SPL
−/−
mice was associated with attenuated baroreflex sensitivity and decreased parasympathetic activity. Our study is the first to show a role for the spinophilin gene in blood pressure regulation.
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Affiliation(s)
- Andrey C. da Costa-Goncalves
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Jens Tank
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Ralph Plehm
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Andre Diedrich
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Mihail Todiras
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Maik Gollasch
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Arnd Heuser
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Maren Wellner
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Michael Bader
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Jens Jordan
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Friedrich C. Luft
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
| | - Volkmar Gross
- From the Max Delbrück Center for Molecular Medicine (A.C.d.C.G., R.P., M.T., A.H., M.W., M.B., F.C.L., V.G.), Berlin, Germany; the Institute of Clinical Pharmacology (J.T., J.J.), Hannover Medical School, Hannover, Germany; the Department of Medicine (A.D.), Division of Clinical Pharmacology, Autonomic Dysfunction Service, Vanderbilt University School of Medicine, Nashville, Tenn; the Charite University Medicine (M.G.), Section Nephrology/Intensive Care; and the Medical Faculty of the Charite (F.C
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