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Petersen B, Busch CJ, Schleifer G, Schaack D, Lasitschka F, Bloch KD, Bloch DB, Ichinose F. Arginase impairs hypoxic pulmonary vasoconstriction in murine endotoxemia. Respir Res 2019; 20:109. [PMID: 31159807 PMCID: PMC6547543 DOI: 10.1186/s12931-019-1062-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/30/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Hypoxic pulmonary vasoconstriction (HPV) optimizes the match between ventilation and perfusion in the lung by reducing blood flow to poorly ventilated regions. Sepsis and endotoxemia impair HPV. We previously showed that nitric oxide synthase 2 (NOS2) is required, but not sufficient, for the effect of endotoxin on HPV. The aim of the current study was to identify additional factors that might contribute to the impairment of HPV during endotoxemia. METHODS Gene expression profiling was determined using pulmonary tissues from NOS2-deficient (NOS2-/-) and wild-type mice subjected to endotoxin or saline challenge (control). HPV was accessed as the percentage increase in left pulmonary vascular resistance (LPVR) in response to left main bronchus occlusion (LMBO) in wild-type mice. RESULTS Among the 22,690 genes analyzed, endotoxin induced a greater than three-fold increase in 59 and 154 genes in the lungs of wild-type and NOS2-/- mice, respectively. Of all the genes induced by endotoxin in wild-type mice, arginase 1 (Arg1) showed the greatest increase (16.3-fold compared to saline treated wild-type mice). In contrast, endotoxin did not increase expression of Arg1 in NOS2-/- mice. There was no difference in the endotoxin-induced expression of Arg2 between wild-type and NOS2-deficient mice. We investigated the role of arginase in HPV by treating the mice with normal saline or the arginase inhibitor Nω-hydroxy-nor-L-arginine (norNOHA). In control mice (in the absence of endotoxin) treated with normal saline, HPV was intact as determined by profound LMBO-induced increase in LPVR (121 ± 22% from baseline). During endotoxemia and treatment with normal saline, HPV was impaired compared to normal saline treated control mice (33 ± 9% vs. 121 ± 22%, P < 0.05). HPV was restored in endotoxin-exposed mice after treatment with the arginase inhibitor norNOHA as shown by the comparison to endotoxemic mice treated with normal saline (113 ± 29% vs, 33 ± 9%, P < 0.05) and to control mice treated with normal saline (113 ± 29% vs, 121 ± 22%, P = 0.97). CONCLUSIONS The results of this study suggest that endotoxemia induces Arg1 and that arginase contributes to the endotoxin-induced impairment of HPV in mice.
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Affiliation(s)
- Bodil Petersen
- Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA
- Department of Anesthesiology and Intensive Care Medicine, Campus Virchow-Klinikum, Charité Universitätsmedizin, Berlin, Germany
| | - Cornelius J Busch
- Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.
- Department of Anesthesiology, Ruprecht Karls University, Heidelberg, Germany.
| | - Grigorij Schleifer
- Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA
| | - Dominik Schaack
- Department of Anesthesiology, Ruprecht Karls University, Heidelberg, Germany
| | - Felix Lasitschka
- Institute of Pathology, Ruprecht Karls University, Heidelberg, Germany
| | - Kenneth D Bloch
- Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA
| | - Donald B Bloch
- Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, USA
| | - Fumito Ichinose
- Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.
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Ma B, Xi Z, Li J, Gao T, Liao R, Wang S, Li X, Tang Y, Wang Z, Hou S, Jiang J, Deng M, Duan Z, Tang X, Jiang L. Vasodilator and hypotensive effects of the spider peptide Lycosin-I in vitro and in vivo. Peptides 2018; 99:108-114. [PMID: 29248696 DOI: 10.1016/j.peptides.2017.12.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 11/23/2022]
Abstract
Lycosin-I, a spider peptide isolated from the venom of the spider Lycosa singoriensis, has anti-bacteria and anti-cancer properties in organisms. However, cardiovascular effects of Lycosin-I have not been studied. In this study, we investigated for the first time the vasodilator and hypotensive effects of Lycosin-I and the possible mechanisms, in order to develop a promising treatment for hypertension-related diseases. For in vitro experiments, thoracic aortas were isolated, and divided into two groups, endothelium-intact and endothelium-denuded aortic rings. Lycosin-I induced a remarkable dose-dependent relaxation in endothelium-intact aortic rings pre-treated with phenylephrine (p < 0.05), while it showed no obvious vasodilator effects in endothelium-denuded aortic rings (p > 0.05). The vasodilator effects of Lycosin-I were significantly weakened by a nitric oxide synthase (NOS) inhibitor, L-NAME (p < 0.001) and a selective inhibitor of nitric oxide (NO)-sensitive soluble guanylate cyclase (sGC), ODQ (p < 0.05), respectively. The levels of endothelial nitric oxide synthase (eNOS) phosphorylation and the NO production were significantly higher in human umbilical vascular endothelial cells pre-cultured with Lycosin-I than the control (p < 0.001), determined via western blot analysis and ozone-chemiluminescence technology. For in vivo experiments, arterial and venous catheters were inserted for mean arterial pressure (MAP) recording and drug administration in anaesthetized spontaneously hypertensive rats. Lycosin-I caused a transient drop of MAP 2 min after the administration compared with the control (p < 0.001). In conclusion, Lycosin-I has the potential to be an anti-hypertensive drug by endothelium-dependent vasodilatation, in which eNOS and NO-sensitive sGC are two main involved factors.
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Affiliation(s)
- Binbin Ma
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Zhouhuan Xi
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Jiahui Li
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Tianqi Gao
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Runzhi Liao
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Shuhang Wang
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Xianyao Li
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Yaqin Tang
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Zheng Wang
- The First Department of General Surgery, the Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China
| | - Shengjie Hou
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Jinying Jiang
- Department of Neonatology, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan 410013, PR China
| | - Meichun Deng
- Department of Biochemistry, School of Life Sciences, Central South University, Changsha, Hunan 410013, PR China
| | - Zhigui Duan
- Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, PR China
| | - Xing Tang
- College of Chemistry, Biology, and Material Science, East China Institute of Technology, Nanchang, Jiangxi 330013, PR China
| | - Liping Jiang
- Department of Parasitology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, PR China.
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Khosravani F, Suvorava T, Dao VTV, Brockmann N, Kocgirli O, Herbst FF, Valcaccia S, Kassack MU, Bas M, Kojda G. Stability of murine bradykinin type 2 receptor despite treatment with NO, bradykinin, icatibant, or C1-INH. Allergy 2015; 70:285-94. [PMID: 25477154 DOI: 10.1111/all.12556] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2014] [Indexed: 01/16/2023]
Abstract
BACKGROUND Little is known about factors which trigger and/or contribute to hereditary angioedema or ACE-inhibitor-mediated angioedema including variations in bradykinin type 2 receptor (B2R) expression and activity. METHODS Protein and mRNA expression of B2R and the increase of intracellular calcium (iCa) in response to bradykinin were monitored in porcine and murine endothelial cells in response to NO donors or bradykinin. B2R protein expression was evaluated in skin, heart, and lung of (i) mice with endothelial-specific overexpression of eNOS (eNOS(tg) ), (ii) in eNOS(-/-) mice and (iii) in C57BL/6 mice treated with the NO donor pentaerythritol tetranitrate (PETN), the NOS inhibitor l-nitroarginine (L-NA), plasma pool C1-INH, and the B2R antagonist icatibant. Aortic reactivity to bradykinin was investigated including eNOS(-/-) mice. RESULTS B2R protein and mRNA expression remained unchanged in cells subjected to L-NA, NO donors, and bradykinin in a time- and concentration-dependent manner. Likewise, increases of iCa in murine brain endothelial cells remained unchanged. B2R protein levels were similar in eNOS(tg) and eNOS(-/-) as compared to transgene-negative littermates. Likewise, treatment of C57BL/6 mice with PETN, L-NA, C1-INH or icatibant did not change B2R protein expression. In aortic rings of C57BL/6 mice, bradykinin induced B2R-dependent constrictions which were attenuated by endothelial NO and abolished by diclofenac indicating the functional importance of B2R-induced activation of endothelial NO synthase and cyclooxygenase. CONCLUSION These data suggest that alterations of B2R protein expression induced by NO, bradykinin, C1-INH, or icatibant unlikely contribute to bradykinin-induced angioedema. This finding does not rule out a role for NO in bradykinin-induced extravasation and/or angioedema.
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Affiliation(s)
- F. Khosravani
- Institute of Pharmacology and Clinical Pharmacology; Heinrich-Heine-University; Düsseldorf Germany
| | - T. Suvorava
- Institute of Pharmacology and Clinical Pharmacology; Heinrich-Heine-University; Düsseldorf Germany
| | - V. T.-V. Dao
- Institute of Pharmacology and Clinical Pharmacology; Heinrich-Heine-University; Düsseldorf Germany
| | - N. Brockmann
- Institute of Pharmaceutical and Medicinal Chemistry; Heinrich-Heine-University; Düsseldorf Germany
| | - O. Kocgirli
- Institute of Pharmacology and Clinical Pharmacology; Heinrich-Heine-University; Düsseldorf Germany
| | - F. F. Herbst
- Institute of Pharmacology and Clinical Pharmacology; Heinrich-Heine-University; Düsseldorf Germany
| | - S. Valcaccia
- Institute of Pharmacology and Clinical Pharmacology; Heinrich-Heine-University; Düsseldorf Germany
| | - M. U. Kassack
- Institute of Pharmaceutical and Medicinal Chemistry; Heinrich-Heine-University; Düsseldorf Germany
| | - M. Bas
- Otorhinolaryngology Department; University Hospital Rechts der Isar; Munich Technical University; Munich Germany
| | - G. Kojda
- Institute of Pharmacology and Clinical Pharmacology; Heinrich-Heine-University; Düsseldorf Germany
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Fuller TD, Spracklen CN, Ryckman KK, Knake LA, Busch TD, Momany AM, Murray JC, Dagle JM. Genetic variation in CYB5R3 is associated with methemoglobin levels in preterm infants receiving nitric oxide therapy. Pediatr Res 2015; 77:472-6. [PMID: 25521918 PMCID: PMC4518542 DOI: 10.1038/pr.2014.206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 09/10/2014] [Indexed: 01/02/2023]
Abstract
BACKGROUND In recent years, increasing numbers of preterm infants have been exposed to inhaled nitric oxide (iNO). This population has decreased methemoglobin (MetHb) reductase activity in their erythrocytes, which may increase the risk of MetHb toxicity. We sought to determine if genetic factors are associated with the observed variance in MetHb levels. METHODS A population of 127 preterm infants was genotyped for five single-nucleotide polymorphisms (SNPs) in the CYB5A and CYB5R3 genes. iNO dose and levels of MetHb were obtained by chart abstraction. ANOVA was performed to identify genetic associations with MetHb levels. RESULTS An association was found between the heterozygous genotype (GA) of rs916321 in the CYB5R3 gene and the mean of the first recorded MetHb levels in Caucasian infants (P = 0.01). This result remained significant after adjustment for the iNO dose (P = 0.009), gender (P = 0.03), multiple gestation (P = 0.03), birth weight (P = 0.02), and gestational age (P = 0.02). No significant associations were found with the other SNPs. CONCLUSION We demonstrate a novel genetic association with neonatal MetHb levels. Identification of genetic risk factors may be useful in determining which preterm infants are most at risk of developing MetHb toxicity with the use of iNO.
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Affiliation(s)
- Tyson D Fuller
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | | | - Kelli K Ryckman
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA
| | - Lindsey A Knake
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Tamara D Busch
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Allison M Momany
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Jeffrey C Murray
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - John M Dagle
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA,Corresponding Author: John M Dagle, MD, PhD, 200 Hawkins Drive, 8800 JPP, Iowa City, IA 52242, Phone: (319) 353-7009, FAX: (319) 356-4685,
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Abstract
SIGNIFICANCE The pulmonary circulation is a low-pressure, low-resistance, highly compliant vasculature. In contrast to the systemic circulation, it is not primarily regulated by a central nervous control mechanism. The regulation of resting membrane potential due to ion channels is of integral importance in the physiology and pathophysiology of the pulmonary vasculature. RECENT ADVANCES Redox-driven ion conductance changes initiated by direct oxidation, nitration, and S-nitrosylation of the cysteine thiols and indirect phosphorylation of the threonine and serine residues directly affect pulmonary vascular tone. CRITICAL ISSUES Molecular mechanisms of changes in ion channel conductance, especially the identification of the sites of action, are still not fully elucidated. FUTURE DIRECTIONS Further investigation of the interaction between redox status and ion channel gating, especially the physiological significance of S-glutathionylation and S-nitrosylation, could result in a better understanding of the physiological and pathophysiological importance of these mediators in general and the implications of such modifications in cellular functions and related diseases and their importance for targeted treatment strategies.
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Affiliation(s)
- Andrea Olschewski
- 1 Ludwig Boltzmann Institute for Lung Vascular Research , Graz, Austria
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Transcription factor cAMP response element modulator (Crem) restrains Pdgf-dependent proliferation of vascular smooth muscle cells in mice. Pflugers Arch 2014; 467:2165-77. [PMID: 25425331 PMCID: PMC4564437 DOI: 10.1007/s00424-014-1652-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 11/10/2014] [Accepted: 11/10/2014] [Indexed: 12/26/2022]
Abstract
Transcription factors of the cAMP response element-binding protein (Creb)/cAMP response element modulator (Crem) family were linked to the switch from a contractile to a proliferating phenotype in vascular smooth muscle cells (VSMCs). Here, we analyzed the vascular function of Crem in mice with a global inactivation of Crem (Crem(-/-)). CRE-mediated transcriptional activity was enhanced in primary Crem(-/-) VSMCs under nonstimulated conditions and under stimulation with Forskolin and platelet-derived growth factor (Pdgf) whereas stimulation with nitric oxide or cGMP showed no effect. This elevated CRE-mediated transcriptional activity as a result of Crem inactivation did not alter aortic contractility or fractions of proliferating or apoptotic aortic VSMCs in situ, and no impact of Crem inactivation on the development of atherosclerotic plaques was observed. Crem(-/-) mice exhibited an increased neointima formation after carotid ligation associated with an increased proliferation of VSMCs in the carotid media. Pdgf-stimulated proliferation of primary aortic Crem(-/-) VSMCs was increased along with an upregulation of messenger RNA (mRNA) levels of Pdgf receptor, alpha polypeptide (Pdgfra), cyclophilin A (Ppia), the regulator of G-protein signaling 5 (Rgs5), and Rho GTPase-activating protein 12 (Arhgap12). Taken together, our data reveal the inhibition of Pdgf-stimulated proliferation of VSMCs by repressing the Pdgf-stimulated CRE-mediated transcriptional activation as the predominant function of Crem in mouse vasculature suggesting an important role of Crem in vasculoproliferative diseases.
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Shunmugavel A, Khan M, Hughes FM, Purves JT, Singh A, Singh I. S-Nitrosoglutathione protects the spinal bladder: novel therapeutic approach to post-spinal cord injury bladder remodeling. Neurourol Urodyn 2014; 34:519-26. [PMID: 24853799 DOI: 10.1002/nau.22619] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 03/27/2014] [Indexed: 01/16/2023]
Abstract
AIMS Bladder and renal dysfunction are secondary events of the inflammatory processes induced by spinal cord injury (SCI). S-Nitrosoglutathione (GSNO), an endogenous nitrosylating agent is pleiotropic and has anti-inflammatory property. Hence, GSNO ameliorates inflammatory sequelae observed in bladder and renal tissues after SCI. Thus, we postulate that GSNO will improve the recovery of micturition dysfunction by quenching the bladder tissue inflammation associated with SCI. METHODS Contusion-based mild SCI was induced in female Sprague-Dawley rats. Sham operated rats served as the controls. SCI rats were gavaged daily with GSNO (50 µg/kg) or vehicle. Bladder function was assessed by urodynamics at 2 and 14 days following SCI. Urine protein concentration and osmolality were measured. Bladder and kidney tissues were analyzed by histology and immunofluorescence for a variety of endpoints related to inflammation. RESULTS Two days after SCI, urodynamics demonstrated a hyperreflexive bladder with overflow and no clear micturition events. By Day 14, vehicle animals regained a semblance of a voiding cycle but with no definite intercontraction intervals. GSNO-treated SCI-rats showed nearly normal cystometrograms. Vehicle-treated SCI rats had increased bladder wet weight, proteinuria, and urine osmolality at Day 14, which was reversed by GSNO treatment. In addition, the SCI-induced increase in immune cell infiltration, collagen deposition, iNOS, and ICAM-1 expression and apoptosis were attenuated by GSNO. CONCLUSIONS These results indicate that oral administration of GSNO hastens the recovery of bladder function after mild contusion-induced SCI through dampening the inflammation sequelae. These findings also suggest that GSNO-mediated redox modulation may be a novel therapeutic target for the treatment of mild SCI-induced renal and bladder dysfunction.
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Affiliation(s)
- Anandakumar Shunmugavel
- Department of Pediatrics, Charles P. Darby Children's Research Institute, Medical University of South Carolina, Charleston, South Carolina
| | - Mushfiquddin Khan
- Department of Pediatrics, Charles P. Darby Children's Research Institute, Medical University of South Carolina, Charleston, South Carolina
| | - Francis M Hughes
- Department of Urology, Charles P. Darby Children's Research Institute, Medical University of South Carolina, Charleston, South Carolina
| | - J Todd Purves
- Department of Urology, Charles P. Darby Children's Research Institute, Medical University of South Carolina, Charleston, South Carolina.,Department of Regenerative Medicine and Cell Biology, Pathology and Laboratory Medicine Service, Medical University of South Carolina, Charleston, South Carolina
| | - Avtar Singh
- Ralph H. Johnson Veterans Administration Medical Center, Pathology and Laboratory Medicine Service, Medical University of South Carolina, Charleston, South Carolina
| | - Inderjit Singh
- Department of Pediatrics, Charles P. Darby Children's Research Institute, Medical University of South Carolina, Charleston, South Carolina
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Nitric Oxide Modulated the Expression of DREAM/Calsenilin/KChIP3 in Inflammatory Pain of Rats. Inflammation 2012; 35:1867-71. [DOI: 10.1007/s10753-012-9508-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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