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Riha I, Salameh A, Hoschke A, Raffort C, Koedel J, Rassler B. Hypoxia-Induced Pulmonary Injury-Adrenergic Blockade Attenuates Nitrosative Stress, and Proinflammatory Cytokines but Not Pulmonary Edema. J Cardiovasc Dev Dis 2024; 11:195. [PMID: 39057617 PMCID: PMC11277000 DOI: 10.3390/jcdd11070195] [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: 05/17/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
Hypoxia can induce pulmonary edema (PE) and inflammation. Furthermore, hypoxia depresses left ventricular (LV) inotropy despite sympathetic activation. To study the role of hypoxic sympathetic activation, we investigated the effects of hypoxia with and without adrenergic blockade (AB) on cardiovascular dysfunction and lung injury, i.e., pulmonary edema, congestion, inflammation, and nitrosative stress. Eighty-six female rats were exposed for 72 h to normoxia or normobaric hypoxia and received infusions with NaCl, prazosin, propranolol, or prazosin-propranolol combination. We evaluated hemodynamic function and performed histological and immunohistochemical analyses of the lung. Hypoxia significantly depressed LV but not right ventricular (RV) inotropic and lusitropic functions. AB significantly decreased LV function in both normoxia and hypoxia. AB effects on RV were weaker. Hypoxic rats showed signs of moderate PE and inflammation. This was accompanied by elevated levels of tumor necrosis factor α (TNFα) and nitrotyrosine, a marker of nitrosative stress in the lungs. In hypoxia, all types of AB markedly reduced both TNFα and nitrotyrosine. However, AB did not attenuate PE. The results suggest that hypoxia-induced sympathetic activation contributes to inflammation and nitrosative stress in the lungs but not to PE. We suggest that AB in hypoxia aggravates hypoxia-induced inotropic LV dysfunction and backlog into the pulmonary circulation, thus promoting PE.
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Affiliation(s)
- Isabel Riha
- Carl-Ludwig-Institute of Physiology, University of Leipzig, 04103 Leipzig, Germany; (I.R.); (A.H.)
| | - Aida Salameh
- Department of Pediatric Cardiology, Heart Centre, University of Leipzig, 04289 Leipzig, Germany; (A.S.); (C.R.)
| | - Annekathrin Hoschke
- Carl-Ludwig-Institute of Physiology, University of Leipzig, 04103 Leipzig, Germany; (I.R.); (A.H.)
| | - Coralie Raffort
- Department of Pediatric Cardiology, Heart Centre, University of Leipzig, 04289 Leipzig, Germany; (A.S.); (C.R.)
| | - Julia Koedel
- Institute of Pathology, University of Leipzig, 04103 Leipzig, Germany;
| | - Beate Rassler
- Carl-Ludwig-Institute of Physiology, University of Leipzig, 04103 Leipzig, Germany; (I.R.); (A.H.)
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Chaâbane M, Elwej A, Ghorbel I, Chelly S, Mnif H, Boudawara T, Ellouze Chaabouni S, Zeghal N, Soudani N. Penconazole alters redox status, cholinergic function and lung’s histoarchitecture of adult rats: Reversal effect of vitamin E. Biomed Pharmacother 2018; 102:645-652. [DOI: 10.1016/j.biopha.2018.03.113] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 03/18/2018] [Accepted: 03/19/2018] [Indexed: 12/13/2022] Open
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Zhang X, Rui L, Wang M, Lian H, Cai L. Sinomenine Attenuates Chronic Intermittent Hypoxia-Induced Lung Injury by Inhibiting Inflammation and Oxidative Stress. Med Sci Monit 2018; 24:1574-1580. [PMID: 29549235 PMCID: PMC5870109 DOI: 10.12659/msm.906577] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background In the present study, we aimed to investigate the effects of sinomenine (SIN) on chronic intermittent hypoxia (CIH)- induced lung injury in rats, and to explore the underlying mechanisms. Material/Methods To perform the investigation, a CIH rat model was established. ELISA assay was applied to detect the level of inflammatory cytokines. Oxidative stress bio-markers (MDA, SOD, and CAT) were determined in lung tissues. In addition, the expression level of NADPH oxidase 2 (Nox2) was analyzed by Western blotting and qRT-PCR, respectively. Results The results showed that compared with other groups, more obvious pulmonary pathological changes were observed in the CIH group. The level of inflammatory cytokines in the CIH group was markedly higher than that in the control and Con-S groups. Compared with the control and Con-S groups, oxidative stress was notably increased in the CIH group. Expression of Nox2 was also increased in the CIH group. The effects caused by CIH in rats were attenuated by SIN treatment. Conclusions SIN can reverse chronic intermittent hypoxia-induced lung injury through inhibiting inflammation and oxidative stress.
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Affiliation(s)
- Xiaofeng Zhang
- Department of Respiratory Medicine, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China (mainland)
| | - Lijun Rui
- Department of Respiratory Medicine, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China (mainland)
| | - Mei Wang
- Department of Respiratory Medicine, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China (mainland)
| | - Hairong Lian
- Department of Respiratory Medicine, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China (mainland)
| | - Liming Cai
- Department of Respiratory Medicine, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China (mainland)
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Ghorbel I, Elwej A, Chaabane M, Jamoussi K, Mnif H, Boudawara T, Zeghal N. Selenium Alleviates Oxidative Stress and Lung Damage Induced by Aluminum Chloride in Adult Rats: Biochemical and Histological Approach. Biol Trace Elem Res 2017; 176:181-191. [PMID: 27550156 DOI: 10.1007/s12011-016-0818-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 08/04/2016] [Indexed: 01/06/2023]
Abstract
Our study pertains to the potential ability of selenium, used as a nutritional supplement, to alleviate oxidative stress induced by aluminum chloride in the lung tissue. Rats have received during 21 days either aluminum chloride (AlCl3) (400 ppm) via drinking water, AlCl3 associated with Na2SeO3 (0.5 mg/kg of diet), or only Na2SeO3. Exposure of rats to AlCl3 induced lung oxidative stress with an increase of malondialdehyde, hydrogen peroxide, and protein carbonyls levels. An alteration of lactate dehydrogenase activities and antioxidant redox status, enzymatic (catalase, superoxide dismutase, and glutathione peroxidase), and non-enzymatic (non-protein thiols, glutathione, metallothionein, and vitamin C) was also observed. These biochemical modifications were substantiated by histopathological data showing alveolar edema, a large number of hemosiderin-laden macrophages, and emphysema. Se supplementation attenuated the levels of oxidative stress by restoring antioxidant state and improved lung histological damage. Our results revealed that Se, a trace element with antioxidant properties, was effective in preventing lung damage.
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Affiliation(s)
- Imen Ghorbel
- Animal Physiology Laboratory, Sciences Faculty of Sfax, University of Sfax, BP 1171, 3000, Sfax, Tunisia.
| | - Awatef Elwej
- Animal Physiology Laboratory, Sciences Faculty of Sfax, University of Sfax, BP 1171, 3000, Sfax, Tunisia
| | - Mariem Chaabane
- Animal Physiology Laboratory, Sciences Faculty of Sfax, University of Sfax, BP 1171, 3000, Sfax, Tunisia
| | - Kamel Jamoussi
- Biochemistry Laboratory, CHU Hedi Chaker, University of Sfax, 3029, Sfax, Tunisia
| | - Hela Mnif
- Anatomopathology Laboratory, CHU Habib Bourguiba, University of Sfax, 3029, Sfax, Tunisia
| | - Tahia Boudawara
- Anatomopathology Laboratory, CHU Habib Bourguiba, University of Sfax, 3029, Sfax, Tunisia
| | - Najiba Zeghal
- Animal Physiology Laboratory, Sciences Faculty of Sfax, University of Sfax, BP 1171, 3000, Sfax, Tunisia
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Cox AA, Sagot Y, Hedou G, Grek C, Wilkes T, Vinik AI, Ghatnekar G. Low-Dose Pulsatile Interleukin-6 As a Treatment Option for Diabetic Peripheral Neuropathy. Front Endocrinol (Lausanne) 2017; 8:89. [PMID: 28512447 PMCID: PMC5411416 DOI: 10.3389/fendo.2017.00089] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/06/2017] [Indexed: 01/27/2023] Open
Abstract
Diabetic peripheral neuropathy (DPN) remains one of the most common and serious complications of diabetes. Currently, pharmacological agents are limited to treating the pain associated with DPN, and do not address the underlying pathological mechanisms driving nerve damage, thus leaving a significant unmet medical need. Interestingly, research conducted using exercise as a treatment for DPN has revealed interleukin-6 (IL-6) signaling to be associated with many positive benefits such as enhanced blood flow and lipid metabolism, decreased chronic inflammation, and peripheral nerve fiber regeneration. IL-6, once known solely as a pro-inflammatory cytokine, is now understood to signal as a multifunctional cytokine, capable of eliciting both pro- and anti-inflammatory responses in a context-dependent fashion. IL-6 released from muscle in response to exercise signals as a myokine and as such has a unique kinetic profile, whereby levels are transiently elevated up to 100-fold and return to baseline levels within 4 h. Importantly, this kinetic profile is in stark contrast to long-term IL-6 elevation that is associated with pro-inflammatory states. Given exercise induces IL-6 myokine signaling, and exercise has been shown to elicit numerous beneficial effects for the treatment of DPN, a causal link has been suggested. Here, we discuss both the clinical and preclinical literature related to the application of IL-6 as a treatment strategy for DPN. In addition, we discuss how IL-6 may directly modulate Schwann and nerve cells to explore a mechanistic understanding of how this treatment elicits a neuroprotective and/or regenerative response. Collectively, studies suggest that IL-6, when administered in a low-dose pulsatile strategy to mimic the body's natural response to exercise, may prove to be an effective treatment for the protection and/or restoration of peripheral nerve function in DPN. This review highlights the studies supporting this assertion and provides rationale for continued investigation of IL-6 for the treatment of DPN.
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Affiliation(s)
| | - Yves Sagot
- Relief Therapeutics SA, Zurich, Switzerland
| | - Gael Hedou
- Relief Therapeutics SA, Zurich, Switzerland
| | | | | | | | - Gautam Ghatnekar
- FirstString Research, Mt. Pleasant, SC, USA
- *Correspondence: Gautam Ghatnekar,
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Lu W, Kang J, Hu K, Tang S, Zhou X, Yu S, Li Y, Xu L. Angiotensin-(1-7) inhibits inflammation and oxidative stress to relieve lung injury induced by chronic intermittent hypoxia in rats. ACTA ACUST UNITED AC 2016; 49:e5431. [PMID: 27599201 PMCID: PMC5018691 DOI: 10.1590/1414-431x20165431] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/20/2016] [Indexed: 02/03/2023]
Abstract
Obstructive sleep apnea is associated with inflammation and oxidative stress in lung tissues and can lead to metabolic abnormalities. We investigated the effects of angiotensin1-7 [Ang-(1-7)] on lung injury in rats induced by chronic intermittent hypoxia (CIH). We randomly assigned 32 male Sprague-Dawley rats (180-200 g) to normoxia control (NC), CIH-untreated (uCIH), Ang-(1-7)-treated normoxia control (N-A), and Ang-(1-7)-treated CIH (CIH-A) groups. Oxidative stress biomarkers were measured in lung tissues, and expression of NADPH oxidase 4 (Nox4) and Nox subunits (p22phox, and p47phox) was determined by Western blot and reverse transcription-polymerase chain reaction. Pulmonary pathological changes were more evident in the uCIH group than in the other groups. Enzyme-linked immunosorbent assays and immunohistochemical staining showed that inflammatory factor concentrations in serum and lung tissues in the uCIH group were significantly higher than those in the NC and N-A groups. Expression of inflammatory factors was significantly higher in the CIH-A group than in the NC and N-A groups, but was lower than in the uCIH group (P<0.01). Oxidative stress was markedly higher in the uCIH group than in the NC and N-A groups. Expression of Nox4 and its subunits was also increased in the uCIH group. These changes were attenuated upon Ang-(1-7) treatment. In summary, treatment with Ang-(1-7) reversed signs of CIH-induced lung injury via inhibition of inflammation and oxidative stress.
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Affiliation(s)
- W Lu
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - J Kang
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - K Hu
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - S Tang
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - X Zhou
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - S Yu
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - Y Li
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - L Xu
- Division of Respiratory Disease, Renmin Hospital of Wuhan University, Wuhan, China
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