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Sévoz-Couche C, Liao W, Foo HYC, Bonne I, Lu TB, Tan Qi Hui C, Peh WYX, Yen SC, Wong WSF. Direct vagus nerve stimulation: A new tool to control allergic airway inflammation through α7 nicotinic acetylcholine receptor. Br J Pharmacol 2024. [PMID: 38430056 DOI: 10.1111/bph.16334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 11/24/2023] [Accepted: 01/08/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND AND PURPOSE Asthma is characterized by airway inflammation, mucus hypersecretion, and airway hyperresponsiveness. The use of nicotinic agents to mimic the cholinergic anti-inflammatory pathway (CAP) controls experimental asthma. Yet, the effects of vagus nerve stimulation (VNS)-induced CAP on allergic inflammation remain unknown. EXPERIMENTAL APPROACH BALB/c mice were sensitized and challenged with house dust mite (HDM) extract and treated with active VNS (5 Hz, 0.5 ms, 0.05-1 mA). Bronchoalveolar lavage (BAL) fluid was assessed for total and differential cell counts and cytokine levels. Lungs were examined by histopathology and electron microscopy. KEY RESULTS In the HDM mouse asthma model, VNS at intensities equal to or above 0.1 mA (VNS 0.1) but not sham VNS reduced BAL fluid differential cell counts and alveolar macrophages expressing α7 nicotinic receptors (α7nAChR), goblet cell hyperplasia, and collagen deposition. Besides, VNS 0.1 also abated HDM-induced elevation of type 2 cytokines IL-4 and IL-5 and was found to block the phosphorylation of transcription factor STAT6 and expression level of IRF4 in total lung lysates. Finally, VNS 0.1 abrogated methacholine-induced hyperresponsiveness in asthma mice. Prior administration of α-bungarotoxin, a specific inhibitor of α7nAChR, but not propranolol, a specific inhibitor of β2-adrenoceptors, abolished the therapeutic effects of VNS 0.1. CONCLUSION AND IMPLICATIONS Our data revealed the protective effects of VNS on various clinical features in allergic airway inflammation model. VNS, a clinically approved therapy for depression and epilepsy, appears to be a promising new strategy for controlling allergic asthma.
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Affiliation(s)
- Caroline Sévoz-Couche
- INSERM, UMRS1158 Neurophysiologie Respiratoire et Clinique, Sorbonne Université, Paris, France
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Wupeng Liao
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Singapore-HUJ Alliance for Research and Enterprise (SHARE), National University of Singapore, Singapore
| | - Hazel Y C Foo
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Singapore-HUJ Alliance for Research and Enterprise (SHARE), National University of Singapore, Singapore
| | - Isabelle Bonne
- Electron Microscopy Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Thong Beng Lu
- Electron Microscopy Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Caris Tan Qi Hui
- Advanced imaging and Histology Core, Immunology Program, Life Science Institute, National University of Singapore, Singapore
| | - Wendy Yen Xian Peh
- The N.1 Institute for Health, National University of Singapore, Singapore
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore
| | - Shi-Cheng Yen
- The N.1 Institute for Health, National University of Singapore, Singapore
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore
| | - W S Fred Wong
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Singapore-HUJ Alliance for Research and Enterprise (SHARE), National University of Singapore, Singapore
- Drug Discovery and Optimization Platform, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Kaur J, Rana P, Matta T, Sodhi RK, Pathania K, Pawar SV, Kuhad A, Kondepudi KK, Kaur T, Dhingra N, Sah SP. Protective effect of olopatadine hydrochloride against LPS-induced acute lung injury: via targeting NF-κB signaling pathway. Inflammopharmacology 2024; 32:603-627. [PMID: 37847473 DOI: 10.1007/s10787-023-01353-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 09/21/2023] [Indexed: 10/18/2023]
Abstract
BACKGROUND Morbidity and mortality rates associated with acute lung injury/acute respiratory distress syndrome (ALI/ARDS) are high (30-40%). Nuclear factor-kappa B (NF-κB) is a transcription factor, associated with transcription of numerous cytokines leading to cytokine storm, and thereby, plays a major role in ALI/ARDS and in advanced COVID-19 syndrome. METHODS Considering the role of NF-κB in ALI, cost-effective in silico approaches were utilized in the study to identify potential NF-κB inhibitor based on the docking and pharmacokinetic results. The identified compound was then pharmacologically validated in lipopolysaccharide (LPS) rodent model of acute lung injury. LPS induces ALI by altering alveolar membrane permeability, recruiting activated neutrophils and macrophages to the lungs, and compromising the alveolar membrane integrity and ultimately impairs the gaseous exchange. Furthermore, LPS exposure is associated with exaggerated production of various proinflammatory cytokines in lungs. RESULTS Based on in silico studies Olopatadine Hydrochloride (Olo), an FDA-approved drug was found as a potential NF-κB inhibitor which has been reported for the first time, and considered further for the pharmacological validation. Intraperitoneal LPS administration resulted in ALI/ARDS by fulfilling 3 out of the 4 criteria described by ATS committee (2011) published workshop report. However, treatment with Olo attenuated LPS-induced elevation of proinflammatory markers (IL-6 and NF-κB), oxidative stress, neutrophil infiltration, edema, and damage in lungs. Histopathological studies also revealed that Olo treatment significantly ameliorated LPS-induced lung injury, thus conferring improvement in survival. Especially, the effects produced by Olo medium dose (1 mg/kg) were comparable to dexamethasone standard. CONCLUSION In nutshell, inhibition of NF-κB pathway by Olo resulted in protection and reduced mortality in LPS- induced ALI and thus has potential to be used clinically to arrest disease progression in ALI/ARDS, since the drug is already in the market. However, the findings warrant further extensive studies, and also future studies can be planned to elucidate its role in COVID-19-associated ARDS or cytokine storm.
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Affiliation(s)
- Jaspreet Kaur
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Priyanka Rana
- Pharmaceutical Chemistry Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Tushar Matta
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
- Food and Nutrition Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Rupinder Kaur Sodhi
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Khushboo Pathania
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Sandip V Pawar
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Anurag Kuhad
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Kanthi Kiran Kondepudi
- Food and Nutrition Biotechnology Division, National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Tanzeer Kaur
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
| | - Neelima Dhingra
- Pharmaceutical Chemistry Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India.
| | - Sangeeta Pilkhwal Sah
- Pharmacology Division, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India.
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Üstündağ H, Kalindemirtaş FD, Doğanay S, Demir Ö, Kurt N, Huyut MT, Özgeriş B, Kariper İA. ENHANCED EFFICACY OF RESVERATROL-LOADED SILVER NANOPARTICLE IN ATTENUATING SEPSIS-INDUCED ACUTE LIVER INJURY: MODULATION OF INFLAMMATION, OXIDATIVE STRESS, AND SIRT1 ACTIVATION. Shock 2023; 60:688-697. [PMID: 37695728 DOI: 10.1097/shk.0000000000002218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
ABSTRACT Sepsis-induced acute liver injury is a life-threatening condition involving inflammation, oxidative stress, and endothelial dysfunction. In the present study, the preventive effects of resveratrol (RV) alone and RV-loaded silver nanoparticles (AgNPs + RV) against sepsis-induced damage were investigated and compared in a rat model of polymicrobial sepsis induced by cecal ligation and puncture (CLP). Rats were divided into four groups: Sham, CLP, RV, and AgNPs + RV. Pro-inflammatory cytokines (TNF-α, IL-1β, IL-6), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) activation, presepsin, procalcitonin (PCT), 8-hydroxy-2'-deoxyguanosine (8-OHDG), vascular endothelial growth factor (VEGF), and sirtuin-1 (SIRT1) levels were assessed to determine the treatments' effects. AgNPs + RV treatment significantly reduced pro-inflammatory cytokines, NF-κB activation, presepsin, PCT, 8-OHDG, and VEGF levels compared with the CLP group, indicating attenuation of sepsis-induced liver injury. Both RV and AgNPs + RV treatments increased SIRT1 levels, suggesting a potential role of SIRT1 activation in mediating the protective effects. In conclusion, AgNPs + RV treatment demonstrated extremely enhanced efficacy in alleviating sepsis-induced liver injury by modulating inflammation, oxidative stress, and endothelial dysfunction, potentially mediated through SIRT1 activation. In this study, the effect of AgNPs + RV on sepsis was evaluated for the first time, and these findings highlight AgNPs + RV as a promising therapeutic strategy for managing sepsis-induced liver injury, warranting further investigation.
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Affiliation(s)
- Hilal Üstündağ
- Department of Physiology, Faculty of Medicine, Erzincan Binali Yıldırım University, Erzincan, Türkiye
| | | | - Songül Doğanay
- Department of Physiology, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Özlem Demir
- Department of Histology, Faculty of Medicine, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Nezahat Kurt
- Department of Biochemistry, Faculty of Medicine, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Mehmet Tahir Huyut
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Betül Özgeriş
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Ataturk University, Erzurum, Turkey
| | - İshak Afşin Kariper
- Education Faculty, Erciyes University, Department of Science Education, Kayseri, Turkey
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Seesing MFJ, Janssen HJB, Geraedts TCM, Weijs TJ, van Ark I, Leusink-Muis T, Folkerts G, Garssen J, Ruurda JP, Nieuwenhuijzen GAP, van Hillegersberg R, Luyer MDP. Exploring the Modulatory Effect of High-Fat Nutrition on Lipopolysaccharide-Induced Acute Lung Injury in Vagotomized Rats and the Role of the Vagus Nerve. Nutrients 2023; 15:nu15102327. [PMID: 37242210 DOI: 10.3390/nu15102327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/01/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
During esophagectomy, the vagus nerve is transected, which may add to the development of postoperative complications. The vagus nerve has been shown to attenuate inflammation and can be activated by a high-fat nutrition via the release of acetylcholine. This binds to α7 nicotinic acetylcholine receptors (α7nAChR) and inhibits α7nAChR-expressing inflammatory cells. This study investigates the role of the vagus nerve and the effect of high-fat nutrition on lipopolysaccharide (LPS)-induced lung injury in rats. Firstly, 48 rats were randomized in 4 groups as follows: sham (sparing vagus nerve), abdominal (selective) vagotomy, cervical vagotomy and cervical vagotomy with an α7nAChR-agonist. Secondly, 24 rats were randomized in 3 groups as follows: sham, sham with an α7nAChR-antagonist and cervical vagotomy with an α7nAChR-antagonist. Finally, 24 rats were randomized in 3 groups as follows: fasting, high-fat nutrition before sham and high-fat nutrition before selective vagotomy. Abdominal (selective) vagotomy did not impact histopathological lung injury (LIS) compared with the control (sham) group (p > 0.999). There was a trend in aggravation of LIS after cervical vagotomy (p = 0.051), even after an α7nAChR-agonist (p = 0.090). Cervical vagotomy with an α7nAChR-antagonist aggravated lung injury (p = 0.004). Furthermore, cervical vagotomy increased macrophages in bronchoalveolar lavage (BAL) fluid and negatively impacted pulmonary function. Other inflammatory cells, TNF-α and IL-6, in the BALF and serum were unaffected. High-fat nutrition reduced LIS after sham (p = 0.012) and selective vagotomy (p = 0.002) compared to fasting. vagotomy. This study underlines the role of the vagus nerve in lung injury and shows that vagus nerve stimulation using high-fat nutrition is effective in reducing lung injury, even after selective vagotomy.
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Affiliation(s)
- Maarten F J Seesing
- Department of Surgery, University Medical Center Utrecht, Utrecht University, 3584 Utrecht, The Netherlands
| | | | - Tessa C M Geraedts
- Department of Surgery, Catharina Hospital, 5623 Eindhoven, The Netherlands
| | - Teus J Weijs
- Department of Surgery, Catharina Hospital, 5623 Eindhoven, The Netherlands
| | - Ingrid van Ark
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 Utrecht, The Netherlands
| | - Thea Leusink-Muis
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 Utrecht, The Netherlands
| | - Gert Folkerts
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 Utrecht, The Netherlands
| | - Johan Garssen
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 Utrecht, The Netherlands
- Danone Nutricia Research & Innovation, Immunology, 3584 Utrecht, The Netherlands
| | - Jelle P Ruurda
- Department of Surgery, University Medical Center Utrecht, Utrecht University, 3584 Utrecht, The Netherlands
| | | | - Richard van Hillegersberg
- Department of Surgery, University Medical Center Utrecht, Utrecht University, 3584 Utrecht, The Netherlands
| | - Misha D P Luyer
- Department of Surgery, Catharina Hospital, 5623 Eindhoven, The Netherlands
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Li C, Chen W, Lin F, Li W, Wang P, Liao G, Zhang L. Functional Two-Way Crosstalk Between Brain and Lung: The Brain-Lung Axis. Cell Mol Neurobiol 2023; 43:991-1003. [PMID: 35678887 DOI: 10.1007/s10571-022-01238-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 05/25/2022] [Indexed: 11/03/2022]
Abstract
The brain has many connections with various organs. Recent advances have demonstrated the existence of a bidirectional central nervous system (CNS) and intestinal tract, that is, the brain-gut axis. Although studies have suggested that the brain and lung can communicate with each other through many pathways, whether there is a brain-lung axis remains still unknown. Based on previous findings, we put forward a hypothesis: there is a cross-talk between the central nervous system and the lung via neuroanatomical pathway, endocrine pathway, immune pathway, metabolites and microorganism pathway, gas pathway, that is, the brain-lung axis. Beyond the regulation of the physiological state in the body, bi-directional communication between the lung and the brain is associated with a variety of disease states, including lung diseases and CNS diseases. Exploring the brain-lung axis not only helps us to understand the development of the disease from different aspects, but also provides an important target for treatment strategies.
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Shelukhina I, Siniavin A, Kasheverov I, Ojomoko L, Tsetlin V, Utkin Y. α7- and α9-Containing Nicotinic Acetylcholine Receptors in the Functioning of Immune System and in Pain. Int J Mol Sci 2023; 24:ijms24076524. [PMID: 37047495 PMCID: PMC10095066 DOI: 10.3390/ijms24076524] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/26/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Nicotinic acetylcholine receptors (nAChRs) present as many different subtypes in the nervous and immune systems, muscles and on the cells of other organs. In the immune system, inflammation is regulated via the vagus nerve through the activation of the non-neuronal α7 nAChR subtype, affecting the production of cytokines. The analgesic properties of α7 nAChR-selective compounds are mostly based on the activation of the cholinergic anti-inflammatory pathway. The molecular mechanism of neuropathic pain relief mediated by the inhibition of α9-containing nAChRs is not fully understood yet, but the role of immune factors in this process is becoming evident. To obtain appropriate drugs, a search of selective agonists, antagonists and modulators of α7- and α9-containing nAChRs is underway. The naturally occurring three-finger snake α-neurotoxins and mammalian Ly6/uPAR proteins, as well as neurotoxic peptides α-conotoxins, are not only sophisticated tools in research on nAChRs but are also considered as potential medicines. In particular, the inhibition of the α9-containing nAChRs by α-conotoxins may be a pathway to alleviate neuropathic pain. nAChRs are involved in the inflammation processes during AIDS and other viral infections; thus they can also be means used in drug design. In this review, we discuss the role of α7- and α9-containing nAChRs in the immune processes and in pain.
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Affiliation(s)
| | | | | | | | | | - Yuri Utkin
- Correspondence: or ; Tel.: +7-495-3366522
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Eloutify YT, El-Shiekh RA, Ibrahim KM, Hamed AR, Al-Karmalawy AA, Shokry AA, Ahmed YH, Avula B, Katragunta K, Khan IA, Meselhy MR. Bioactive fraction from Plumeria obtusa L. attenuates LPS-induced acute lung injury in mice and inflammation in RAW 264.7 macrophages: LC/QToF-MS and molecular docking. Inflammopharmacology 2023; 31:859-875. [PMID: 36773191 PMCID: PMC10140140 DOI: 10.1007/s10787-023-01144-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/26/2022] [Indexed: 02/12/2023]
Abstract
In this study, the anti-inflammatory effects of the methanolic extract (TE) of Plumeria obtusa L. (aerial parts) and its fractions were evaluated in vitro, and active fraction was evaluated in vivo. Among tested extracts, dichloromethane fraction (DCM-F) exhibited the strongest inhibition of lipopolysaccharide (LPS)-induced nitric oxide (NO) in RAW 264.7 macrophages. The effect of DCM-F on LPS-induced acute lung injury (ALI) in mice was studied. The animals were divided into five groups (n = 7) randomly; Gp I: negative control, GP II: positive control (LPS group), GP III: standard (dexamethasone, 2 mg/kg b.wt), GP IV and V: DCM-F (100 mg/kg), and DEM-F (200 mg/kg), respectively. DCM-F at a dose of 200 mg/kg suppressed the ability of LPS to increase the levels of nitric oxide synthase (iNOS), NO, tumor necrosis factor-α (TNF-α), and interleukin 6 (IL-6), as measured by ELISA. In addition, the expression of cyclooxygenase-2 (COX-2) was reduced (determined by immunohistochemistry) and the level of malondialdehyde (MDA) was decreased while that of catalase was restored to the normal values. Furthermore, the histopathological scores of inflammation induced by LPS were reduced. Twenty-two compounds were tentatively identified in DCM-F using LC/ESI-QToF with iridoids, phenolic derivatives and flavonoids as major constituents. Identified compounds were subjected to two different molecular docking processes against iNOS and prostaglandin E synthase-1 target receptors. Notably, protoplumericin A and 13-O-coumaroyl plumeride were the most promising members compared to the co-crystallized inhibitor in each case. These findings suggested that DCM-F attenuates the LPS-induced ALI in experimental animals through its anti-inflammatory and antioxidant potential.
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Affiliation(s)
- Yousra T Eloutify
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Riham A El-Shiekh
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Khaled Meselhy Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Ahmed R Hamed
- Chemistry of Medicinal Plants Department and Biology Unit, Central Lab for the Pharmaceutical and Drug Industries Research Institute, National Research Centre, 33 El-Bohouth St, Giza, 12622, Dokki, Egypt
| | - Ahmed A Al-Karmalawy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th of October City, Giza, 12566, Egypt
| | - Aya A Shokry
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - Yasmine H Ahmed
- Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA.,Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Meselhy R Meselhy
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt.
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Pulkrabkova L, Svobodova B, Konecny J, Kobrlova T, Muckova L, Janousek J, Pejchal J, Korabecny J, Soukup O. Neurotoxicity evoked by organophosphates and available countermeasures. Arch Toxicol 2023; 97:39-72. [PMID: 36335468 DOI: 10.1007/s00204-022-03397-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022]
Abstract
Organophosphorus compounds (OP) are a constant problem, both in the military and in the civilian field, not only in the form of acute poisoning but also for their long-lasting consequences. No antidote has been found that satisfactorily protects against the toxic effects of organophosphates. Likewise, there is no universal cure to avert damage after poisoning. The key mechanism of organophosphate toxicity is the inhibition of acetylcholinesterase. The overstimulation of nicotinic or muscarinic receptors by accumulated acetylcholine on a synaptic cleft leads to activation of the glutamatergic system and the development of seizures. Further consequences include generation of reactive oxygen species (ROS), neuroinflammation, and the formation of various other neuropathologists. In this review, we present neuroprotection strategies which can slow down the secondary nerve cell damage and alleviate neurological and neuropsychiatric disturbance. In our opinion, there is no unequivocal approach to ensure neuroprotection, however, sooner the neurotoxicity pathway is targeted, the better the results which can be expected. It seems crucial to target the key propagation pathways, i.e., to block cholinergic and, foremostly, glutamatergic cascades. Currently, the privileged approach oriented to stimulating GABAAR by benzodiazepines is of limited efficacy, so that antagonizing the hyperactivity of the glutamatergic system could provide an even more efficacious approach for terminating OP-induced seizures and protecting the brain from permanent damage. Encouraging results have been reported for tezampanel, an antagonist of GluK1 kainate and AMPA receptors, especially in combination with caramiphen, an anticholinergic and anti-glutamatergic agent. On the other hand, targeting ROS by antioxidants cannot or already developed neuroinflammation does not seem to be very productive as other processes are also involved.
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Yin H, Feng Y, Duan Y, Ma S, Guo Z, Wei Y. Hydrogen gas alleviates lipopolysaccharide-induced acute lung injury and inflammatory response in mice. J Inflamm (Lond) 2022; 19:16. [PMID: 36253774 PMCID: PMC9575233 DOI: 10.1186/s12950-022-00314-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022] Open
Abstract
Background Chronic inflammation and oxidant/antioxidant imbalance are two main pathological features associated with lipopolysaccharide (LPS)-induced acute lung injury (ALI). The following study investigated the protective role of hydrogen (H2), a gaseous molecule without known toxicity, in LPS-induced lung injury in mice and explored its potential molecular mechanisms. Methods Mice were randomly divided into three groups: H2 control group, LPS group, and LPS + H2 group. The mice were euthanized at the indicated time points, and the specimens were collected. The 72 h survival rates, cytokines contents, pathological changes, expression of Toll-like receptor 4 (TLR4), and oxidative stress indicators were analyzed. Moreover, under different culture conditions, RAW 264.7 mouse macrophages were used to investigate the potential molecular mechanisms of H2 in vitro. Cells were divided into the following groups: PBS group, LPS group, and LPS + H2 group. The cell viability, intracellular ROS, cytokines, and expression of TLR4 and nuclear factor kappa-B (NF-κB) were observed. Results Hydrogen inhalation increased the survival rate to 80%, reduced LPS-induced lung damage, and decreased inflammatory cytokine release in LPS mice. Besides, H2 showed remarked anti-oxidative activity to reduce the MDA and NO contents in the lung. In vitro data further indicated that H2 down-regulates the levels of ROS, NO, TNF-α, IL-6, and IL-1β in LPS-stimulated macrophages and inhibits the expression of TLR4 and the activation of nuclear factor kappa-B (NF-κB). Conclusion Hydrogen gas alleviates lipopolysaccharide-induced acute lung injury and inflammatory response most probably through the TLR4-NF-κB pathway. Supplementary Information The online version contains supplementary material available at 10.1186/s12950-022-00314-x.
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Affiliation(s)
- Hongling Yin
- grid.24516.340000000123704535Research Center for Translational Medicine & Key Laboratory of Arrhythmias of the Ministry of Education of China, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120 China
| | - Yajing Feng
- grid.24516.340000000123704535Department of Center ICU, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120 China
| | - Yi Duan
- grid.24516.340000000123704535Research Center for Translational Medicine & Key Laboratory of Arrhythmias of the Ministry of Education of China, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120 China
| | - Shaolin Ma
- grid.24516.340000000123704535Department of Critical Care Medicine, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120 China
| | - Zhongliang Guo
- grid.452753.20000 0004 1799 2798Department of Respiratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120 China
| | - Youzhen Wei
- grid.24516.340000000123704535Research Center for Translational Medicine & Key Laboratory of Arrhythmias of the Ministry of Education of China, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120 China
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Lin M, Stewart MT, Zefi S, Mateti KV, Gauthier A, Sharma B, Martinez LR, Ashby CR, Mantell LL. Dual effects of supplemental oxygen on pulmonary infection, inflammatory lung injury, and neuromodulation in aging and COVID-19. Free Radic Biol Med 2022; 190:247-263. [PMID: 35964839 PMCID: PMC9367207 DOI: 10.1016/j.freeradbiomed.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 11/23/2022]
Abstract
Clinical studies have shown a significant positive correlation between age and the likelihood of being infected with SARS-CoV-2. This increased susceptibility is positively correlated with chronic inflammation and compromised neurocognitive functions. Postmortem analyses suggest that acute lung injury (ALI)/acute respiratory distress syndrome (ARDS), with systemic and lung hyperinflammation, can cause significant morbidity and mortality in COVID-19 patients. Supraphysiological supplemental oxygen, also known as hyperoxia, is commonly used to treat decreased blood oxygen saturation in COVID-19 patients. However, prolonged exposure to hyperoxia alone can cause oxygen toxicity, due to an excessive increase in the levels of reactive oxygen species (ROS), which can overwhelm the cellular antioxidant capacity. Subsequently, this causes oxidative cellular damage and increased levels of aging biomarkers, such as telomere shortening and inflammaging. The oxidative stress in the lungs and brain can compromise innate immunity, resulting in an increased susceptibility to secondary lung infections, impaired neurocognitive functions, and dysregulated hyperinflammation, which can lead to ALI/ARDS, and even death. Studies indicate that lung inflammation is regulated by the central nervous system, notably, the cholinergic anti-inflammatory pathway (CAIP), which is innervated by the vagus nerve and α7 nicotinic acetylcholine receptors (α7nAChRs) on lung cells, particularly lung macrophages. The activation of α7nAChRs attenuates oxygen toxicity in the lungs and improves clinical outcomes by restoring hyperoxia-compromised innate immunity. Mechanistically, α7nAChR agonist (e.g., GAT 107 and GTS-21) can regulate redox signaling by 1) activating Nrf2, a master regulator of the antioxidant response and a cytoprotective defense system, which can decrease cellular damage caused by ROS and 2) inhibiting the activation of the NF-κB-mediated inflammatory response. Notably, GTS-21 has been shown to be safe and it improves neurocognitive functions in humans. Therefore, targeting the α7nAChR may represent a viable therapeutic approach for attenuating dysregulated hyperinflammation-mediated ARDS and sepsis in COVID-19 patients receiving prolonged oxygen therapy.
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Affiliation(s)
- Mosi Lin
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Maleka T Stewart
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Sidorela Zefi
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Kranthi Venkat Mateti
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Alex Gauthier
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Bharti Sharma
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Lauren R Martinez
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Charles R Ashby
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Lin L Mantell
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA; Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA.
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11
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Al-Harbi NO, Imam F, Matar Al-Harbi M, Al-Jeryan K, Al-Shabanah OA, Alhosaini KA, Saif Alqahtani L, Afzal M, Khalid Anwer MD, Aldossari AA, Alanazi MM, Alsanea S, Assiri MA. Protective effect of Apremilast against LPS-induced acute lung injury via modulation of oxidative stress and inflammation: Possible involvement of Akt and ERK signaling pathways. Saudi J Biol Sci 2022; 29:3414-3424. [PMID: 35844406 PMCID: PMC9280219 DOI: 10.1016/j.sjbs.2022.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/21/2021] [Accepted: 02/13/2022] [Indexed: 11/23/2022] Open
Abstract
Lung injuries are attributed due to exposure to Drugs or chemicals. One of the important challenging situations for the clinicians is to manage treatments of different diseases with acute lung injury (ALI). The objective of this study was to investigate the possible protective mechanisms and action of a novel Phosphodiesterase-4 inhibitor “Apremilast” (AP) in lipopolysaccharide (LPS)-induced lung injury. Blood sample from each animals were collected in a vacuum blood collection tube. The rat lungs were isolated for oxidative stress assessment, western blot analysis and their mRNA expressions using RT-PCR. Exposure of LPS in rats causes significant increase in oxidative stress, activates the pro-inflammatory cytokines release like tissue necrotic factor-alpha (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6), modulated gene expression, protein expression and histopathological changes which were reversed by administration of AP. Finding of the research enlighten the protective role of AP against LPS-induced ALI.
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12
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Mohamed GA, Ibrahim SRM, El-Agamy DS, Elsaed WM, Sirwi A, Asfour HZ, Koshak AE, Elhady SS. Terretonin as a New Protective Agent against Sepsis-Induced Acute Lung Injury: Impact on SIRT1/Nrf2/NF-κBp65/NLRP3 Signaling. Biology (Basel) 2021; 10:1219. [PMID: 34827212 DOI: 10.3390/biology10111219] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/14/2021] [Accepted: 11/19/2021] [Indexed: 01/02/2023]
Abstract
Endophytic fungi are proving to be an excellent source of chemical entities with unique structures and varied bioactivities. Terretonin (TE) and its structurally related derivatives are a class of meroterpenoids, possessing the same unique tetracyclic core skeleton, which have been reported from the Aspergillus genus. This study was carried out to assess the potential protective effects of TE separated from the endophytic fungus A. terreus against LPS (lipopolysaccharide)-induced ALI (acute lung injury) in mice. The results revealed that TE alleviated pulmonary edema as it lowered both the W/D lung ratio and protein content. The inflammatory response represented by inflammatory cell infiltration into the lung tissues was greatly repressed by TE. That was supported by the improved histopathological results and also by the reduced level of myeloperoxidase in the lung. TE showed a potent antioxidant activity as it attenuated lipid peroxidative markers (malondialdehyde, 4-hydroxynonenal, and protein carbonyl) and enhanced endogenous antioxidants (reduced glutathione, superoxide dismutase, and catalase) in lung tissues. Similarly, TE increased the mRNA expression of SIRT1, Nrf2, and its genes (HO-1, NQO1, and GCLm). On the other hand, TE restrained the activation of NF-κB (nuclear factor-κB) in the lung. Consequently, TE depressed the pro-inflammatory cytokines: nitric oxide (NOx), TNF-α (tumor necrosis factor-α), and interleukins (IL-6 and -1β). Additionally, TE inhibited NLRP3 signaling and interrupted apoptosis by decreasing the levels of proapoptotic markers (Bax and caspase-3) and increasing the level of an anti-apoptotic marker (Bcl-2). In conclusion, TE had a remarkable protective potential on LPS-induced lung damage via antioxidant and anti-inflammatory mechanisms. This finding encourages further investigations on this promising candidate.
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13
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Akpinar E, Kutlu Z, Kose D, Aydin P, Tavaci T, Bayraktutan Z, Yuksel TN, Yildirim S, Eser G, Dincer B. Protective Effects of Idebenone against Sepsis Induced Acute Lung Damage. J INVEST SURG 2021; 35:560-568. [PMID: 33722148 DOI: 10.1080/08941939.2021.1898063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND/AIMS Sepsis is an uncontrolled systemic infection, withcomplex pathophysiology that may result in acute lung organ damage and cause multiple organ failure. Although much research has been conducted to illuminate sepsis's complex pathophysiology, sepsis treatment protocols are limited, and sepsis remains an important cause of mortality andmorbidity in intensive care units.Various studies have shown that idebenone (IDE) possesses strong antioxidant properties, which inhibit lipid peroxidation and protect cells from oxidative damage. The present study aimed to evaluate the protective effects of IDE against lung injury in a cecal ligation and puncture (CLP)-induced sepsis rat model. METHODS Male albino Wistar rats were used. The animals were divided into a healthy control (no treatment), CLP, IDE control (200 mg/kg), and CLP + IDE subgroups (50 mg/kg, 100 mg/kg, and 200 mg/kg), with nine rats in each group.IDE was administered 1 h after CLP induction.To evaluate the protective effects of IDE, lung tissues were collected 16 h after sepsis for biochemical, immunohistochemical staining, and histopathological examination. RESULTS IDE significantly ameliorated sepsis-induced disturbances in oxidative stress-related factors, with its effects increasing in accordance with the dose.IDE also abolished histopathological changes in lung tissues associated with CLP.Furthermore, interleukin 1 beta (IL-1β)and tumor necrosis factor-alpha (TNF-α) immunopositivity markedly decreased in the septic rats following IDE treatment. CONCLUSIONS IDE largely mitigated the inflammatory response in sepsis-induced lung injury by decreasing free radicals and preventing lipid peroxidation. The results suggest that IDE may represent a potential novel therapeutic drug for sepsis treatment.
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Affiliation(s)
- Erol Akpinar
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Zerrin Kutlu
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Duygu Kose
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.,Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey
| | - Pelin Aydin
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.,Department of Anesthesiology and Reanimation, Educational and Research Hospital, Erzurum, Turkey
| | - Taha Tavaci
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Zafer Bayraktutan
- Department of Biochemistry, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Tugba Nurcan Yuksel
- Department of Pharmacology, Faculty of Medicine, Namik Kemal University, Tekirdag, Turkey
| | - Serkan Yildirim
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Gizem Eser
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Busra Dincer
- Department of Pharmacology, Faculty of Pharmacy, Erzincan Binali Yildirim University, Erzincan, Turkey
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14
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Liu C, Yin Z, Feng T, Zhang M, Zhou Z, Zhou Y. An integrated network pharmacology and RNA-Seq approach for exploring the preventive effect of Lonicerae japonicae flos on LPS-induced acute lung injury. J Ethnopharmacol 2021; 264:113364. [PMID: 32916233 PMCID: PMC7480403 DOI: 10.1016/j.jep.2020.113364] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lonicerae japonicae flos (LJF, the dried flower bud or newly bloomed flower of Lonicera japonica Thunb.), a typical herbal medicine, targets the lung, heart and stomach meridian with the function of clearing heat and detoxication. It ameliorated inflammatory responses and protected against acute lung inflammation in animal models. Acute lung injury (ALI) is a kind of inflammatory disease in which alveolar cells are damaged. However, a network pharmacology study to thoroughly investigate the mechanisms preventing ALI has not been performed. AIM OF THE STUDY In this study, we examined the main active ingredients in LJF and the protective effects of LJF on LPS-induced ALI in rats. MATERIALS AND METHODS First, the main active ingredients of LJF were screened in the TCMSP database, and the ALI-associated targets were collected from the GeneCards database. Then, we used compound-target and target-pathway networks to uncover the preventive mechanisms of LJF. Furthermore, we assessed the preventive effects of LJF in an LPS-induced rat model with the RNA-Seq technique to validate the possible molecular mechanisms of the effects of LJF in the treatment of ALI. RESULTS The network pharmacology results identified 28 main active compounds in LJF, and eight chemical components highly related to the potential targets, which were potential active compounds in LJF. In all, 94 potential targets were recognized, including IL6, TNF, PTGS2, APP, F2, and GRM5. The pathways revealed that the possible targets of LJF involved in the regulation of the IL-17 signalling pathway. Then, in vivo experiments indicated that LJF decreased the levels of proinflammatory cytokines (TNF-, IL-1, and IL-6) in serum and bronchoalveolar lavage fluid, decreased the levels of oxidative stress factors (MDA and MPO) and increased the activities of SOD and GSH-Px in lung tissue. The RNA-Seq results revealed that 7811, 775 and 3654 differentially expressed genes (DEGs) in Ctrl (control group), ALI-LJF (Lonicerae japonicae flos group) and ALI-DXSM (dexamethasone group), respectively. KEGG pathway analysis showed that the DEGs associated with immune response and inflammation signalling pathways and the IL-17 signalling pathway were significantly enriched in LJF. Compared with those in ALI, the expression of CXCL2, CXCL1, CXCL6, NFKBIA, IFNG, IL6, IL17A, IL17F, IL17C, MMP9 and TNFAIP3, which are involved in the IL-17 signalling pathway, were significantly decreased in the LJF group according to the qRT-PCR analyses. CONCLUSIONS In view of the network pharmacology and RNA-Seq results, the study identified the main active ingredient and potential targets of LJF involved in protecting against ALI, which suggests directions for further research on LJF.
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Affiliation(s)
- Chang Liu
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550025, China
| | - Zhigang Yin
- College of Life Science, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Tingting Feng
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550025, China
| | - Min Zhang
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Zhi Zhou
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Ying Zhou
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550025, China; Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine, Guizhou University, Guiyang, Guizhou, 550025, China.
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15
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Kakinuma Y. Characteristic Effects of the Cardiac Non-Neuronal Acetylcholine System Augmentation on Brain Functions. Int J Mol Sci 2021; 22:ijms22020545. [PMID: 33430415 PMCID: PMC7826949 DOI: 10.3390/ijms22020545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/05/2021] [Accepted: 01/05/2021] [Indexed: 02/07/2023] Open
Abstract
Since the discovery of non-neuronal acetylcholine in the heart, this specific system has drawn scientific interest from many research fields, including cardiology, immunology, and pharmacology. This system, acquired by cardiomyocytes independent of the parasympathetic nervous system of the autonomic nervous system, helps us to understand unsolved issues in cardiac physiology and to realize that the system may be more pivotal for cardiac homeostasis than expected. However, it has been shown that the effects of this system may not be restricted to the heart, but rather extended to cover extra-cardiac organs. To this end, this system intriguingly influences brain function, specifically potentiating blood brain barrier function. Although the results reported appear to be unusual, this novel characteristic can provide us with another research interest and therapeutic application mode for central nervous system diseases. In this review, we discuss our recent studies and raise the possibility of application of this system as an adjunctive therapeutic modality.
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Affiliation(s)
- Yoshihiko Kakinuma
- Department of Bioregulatory Science, Graduate School of Medicine, Nippon Medical School, Tokyo 113-8602, Japan
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16
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Horkowitz AP, Schwartz AV, Alvarez CA, Herrera EB, Thoman ML, Chatfield DA, Osborn KG, Feuer R, George UZ, Phillips JA. Acetylcholine Regulates Pulmonary Pathology During Viral Infection and Recovery. Immunotargets Ther 2020; 9:333-350. [PMID: 33365281 PMCID: PMC7751717 DOI: 10.2147/itt.s279228] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/01/2020] [Indexed: 12/12/2022] Open
Abstract
Introduction This study was designed to explore the role of acetylcholine (ACh) in pulmonary viral infection and recovery. Inflammatory control is critical to recovery from respiratory viral infection. ACh secreted from non-neuronal sources, including lymphocytes, plays an important, albeit underappreciated, role in regulating immune-mediated inflammation. Methods ACh and lymphocyte cholinergic status in the lungs were measured over the course of influenza infection and recovery. The role of ACh was examined by inhibiting ACh synthesis in vivo. Pulmonary inflammation was monitored by Iba1 immunofluorescence, using a novel automated algorithm. Tissue repair was monitored histologically. Results Pulmonary ACh remained constant through the early stage of infection and increased during the peak of the acquired immune response. As the concentration of ACh increased, cholinergic lymphocytes appeared in the BAL and lungs. Cholinergic capacity was found primarily in CD4 T cells, but also in B cells and CD8 T cells. The cholinergic CD4+ T cells bound to influenza-specific tetramers and were retained in the resident memory regions of the lung up to 2 months after infection. Histologically, cholinergic lymphocytes were found in direct physical contact with activated macrophages throughout the lung. Inflammation was monitored by ionized calcium-binding adapter molecule 1 (Iba1) immunofluorescence, using a novel automated algorithm. When ACh production was inhibited, mice exhibited increased tissue inflammation and delayed recovery. Histologic examination revealed abnormal tissue repair when ACh was limited. Conclusion These findings point to a previously unrecognized role for ACh in the transition from active immunity to recovery and pulmonary repair following respiratory viral infection.
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Affiliation(s)
- Alexander P Horkowitz
- Donald P. Shiley Biosciences Center, San Diego State University, San Diego, California, USA.,Department of Biology, San Diego State University, San Diego, California, USA
| | - Ashley V Schwartz
- Department of Mathematics and Statistics, San Diego State University, San Diego, California, USA
| | - Carlos A Alvarez
- Donald P. Shiley Biosciences Center, San Diego State University, San Diego, California, USA.,Department of Biology, San Diego State University, San Diego, California, USA
| | - Edgar B Herrera
- Donald P. Shiley Biosciences Center, San Diego State University, San Diego, California, USA
| | - Marilyn L Thoman
- Donald P. Shiley Biosciences Center, San Diego State University, San Diego, California, USA
| | - Dale A Chatfield
- Department of Chemistry, San Diego State University, San Diego, California, USA
| | - Kent G Osborn
- Office of Animal Research, University of California San Diego, San Diego, California, USA
| | - Ralph Feuer
- Department of Biology, San Diego State University, San Diego, California, USA
| | - Uduak Z George
- Department of Mathematics and Statistics, San Diego State University, San Diego, California, USA
| | - Joy A Phillips
- Donald P. Shiley Biosciences Center, San Diego State University, San Diego, California, USA
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17
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Jana B, Całka J, Palus K, Sikora M. Escherichia Coli -induced Inflammation Changes the Expression of Acetylcholine Receptors (M2R, M3R, and α-7 nAChR) in the Pig Uterus. J Vet Res 2020; 64:531-41. [PMID: 33367142 DOI: 10.2478/jvetres-2020-0073] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 10/20/2020] [Indexed: 11/21/2022] Open
Abstract
Introduction The influence of inflammation on the patterns of muscarinic 2 and 3 receptor subtypes (M2R and M3R), and α-7 nicotinic acetylcholine receptor (α-7 nAChR) expression in the porcine uterus was investigated. Material and Methods On day three of the oestrous cycle of gilts aged 7-8 months with body weight 90-120 kg, either an E. coli suspension (E. coli group, n = 5) or saline (Sal group, n = 5) was administered into the uterine horns via laparotomy or only laparotomy was performed on control swine (Ctrl group, n = 5). After eight days, and the onset of severe acute endometritis in the E. coli group, the uterine mRNA and protein receptor expression levels were determined using real-time RT-PCR and Western blotting, respectively, with receptor localisation by immunofluorescence. Results The studied receptors were in the luminal epithelium, glands, blood vessels, and myometrial muscle cells of all gilts. The M2R mRNA level was lower in the inflamed endometrium compared to the Ctrl and Sal groups. Also in this tissue, the expression of M3R mRNA and protein was lower than in the Ctrl and Sal groups. The M3R protein level in the bacterially challenged myometrium was found to be increased compared to unadministered groups. In the endometrium of the E. coli group, the α-7 nAChR protein level was lower than in the Sal group, and in the myometrium it was reduced in relation to both the other groups. P values were ≤ 0.05 in all cases. Conclusion Inflammation causes alterations in the M2R, M3R, and α-7 nAChR expression in the pig uterus, suggesting their significance in the course and repercussions of uterine inflammation.
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Sitapara RA, Gauthier AG, Patel VS, Lin M, Zur M, Ashby CR, Mantell LL. The α7 nicotinic acetylcholine receptor agonist GTS-21 improves bacterial clearance in mice by restoring hyperoxia-compromised macrophage function. Mol Med 2020; 26:98. [PMID: 33126860 PMCID: PMC7596622 DOI: 10.1186/s10020-020-00224-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 10/07/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Mechanical ventilation, in combination with supraphysiological concentrations of oxygen (i.e., hyperoxia), is routinely used to treat patients with respiratory distress, such as COVID-19. However, prolonged exposure to hyperoxia compromises the clearance of invading pathogens by impairing macrophage phagocytosis. Previously, we have shown that the exposure of mice to hyperoxia induces the release of the nuclear protein high mobility group box-1 (HMGB1) into the pulmonary airways. Furthermore, extracellular HMGB1 impairs macrophage phagocytosis and increases the mortality of mice infected with Pseudomonas aeruginosa (PA). The aim of this study was to determine whether GTS-21 (3-(2,4-dimethoxybenzylidene) anabaseine), an α7 nicotinic acetylcholine receptor (α7nAChR) agonist, could (1) inhibit hyperoxia-induced HMGB1 release into the airways; (2) enhance macrophage phagocytosis and (3) increase bacterial clearance from the lungs in a mouse model of ventilator-associated pneumonia. METHOD GTS-21 (0.04, 0.4, and 4 mg/kg) or saline were administered by intraperitoneal injection to mice that were exposed to hyperoxia (≥ 99% O2) and subsequently challenged with PA. RESULTS The systemic administration of 4 mg/kg i.p. of GTS-21 significantly increased bacterial clearance, decreased acute lung injury and decreased accumulation of airway HMGB1 compared to the saline control. To determine the mechanism of action of GTS-21, RAW 264.7 cells, a macrophage-like cell line, were incubated with different concentrations of GTS-21 in the presence of 95% O2. The phagocytic activity of macrophages was significantly increased by GTS-21 in a dose-dependent manner. In addition, GTS-21 significantly inhibited the cytoplasmic translocation and release of HMGB1 from RAW 264.7 cells and attenuated hyperoxia-induced NF-κB activation in macrophages and mouse lungs exposed to hyperoxia and infected with PA. CONCLUSIONS Our results indicate that GTS-21 is efficacious in improving bacterial clearance and reducing acute lung injury via enhancing macrophage function by inhibiting the release of nuclear HMGB1. Therefore, the α7nAChR represents a possible pharmacological target to improve the clinical outcome of patients on ventilators by augmenting host defense against bacterial infections.
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Affiliation(s)
- Ravikumar A Sitapara
- Department of Pharmaceutical Sciences, St. John's University College of Pharmacy and Health Sciences, 8000 Utopia Parkway, Queens, NY, 11439, USA
| | - Alex G Gauthier
- Department of Pharmaceutical Sciences, St. John's University College of Pharmacy and Health Sciences, 8000 Utopia Parkway, Queens, NY, 11439, USA
| | - Vivek S Patel
- Department of Pharmaceutical Sciences, St. John's University College of Pharmacy and Health Sciences, 8000 Utopia Parkway, Queens, NY, 11439, USA
| | - Mosi Lin
- Department of Pharmaceutical Sciences, St. John's University College of Pharmacy and Health Sciences, 8000 Utopia Parkway, Queens, NY, 11439, USA
| | - Michelle Zur
- Department of Pharmaceutical Sciences, St. John's University College of Pharmacy and Health Sciences, 8000 Utopia Parkway, Queens, NY, 11439, USA
| | - Charles R Ashby
- Department of Pharmaceutical Sciences, St. John's University College of Pharmacy and Health Sciences, 8000 Utopia Parkway, Queens, NY, 11439, USA
| | - Lin L Mantell
- Department of Pharmaceutical Sciences, St. John's University College of Pharmacy and Health Sciences, 8000 Utopia Parkway, Queens, NY, 11439, USA. .,The Feinstein Institute for Medical Research, Northwell Health System, Manhasset, NY, 11030, USA.
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19
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Qi Y, Si D, Zhu L, Qi Y, Wu Z, Chen D, Yang Y. High-fat diet-induced obesity affects alpha 7 nicotine acetylcholine receptor expressions in mouse lung myeloid cells. Sci Rep 2020; 10:18368. [PMID: 33110180 DOI: 10.1038/s41598-020-75414-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 10/14/2020] [Indexed: 12/16/2022] Open
Abstract
Ample evidence indicates that obesity causes dysfunctions in the lung. Previous studies also show that cholinergic anti-inflammatory pathways play crucial roles in obesity-induced chronic inflammation via α7 nicotinic acetylcholine receptor (α7nAChR) signaling. However, it remains unclear whether and how obesity affects the expressions of α7nAChR in myeloid cells in the lung. To address this question, we treated regular chow diet-fed mice or high-fat diet induced obese mice with lipopolysaccharide (LPS) or vehicle via endotracheal injections. By using a multicolor flow cytometry approach to analyze and characterize differential cell subpopulations and α7nAChR expressions, we find no detectable α7nAChR in granulocytes, monocytes and alveolar macrophages, and low expression levels of α7nAChR were detected in interstitial macrophages. Interestingly, we find that a challenge with LPS treatment significantly increased expression levels of α7nAChR in monocytes, alveolar and interstitial macrophages. Meanwhile, we observed that the expression levels of α7nAChR in alveolar and interstitial macrophages in high-fat diet induced obese mice were lower than regular chow diet-fed mice challenged by the LPS. Together, our findings indicate that obesity alters the expressions of α7nAChR in differential lung myeloid cells.
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20
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Wang M, Zhang T, Li L, Xie Q, Wang Y, Li Y, Chen Z. Protective effects of HY1702 on lipopolysaccharide-induced mild acute respiratory distress syndrome in mice. Eur J Pharmacol 2020; 887:173563. [PMID: 32949601 PMCID: PMC8368985 DOI: 10.1016/j.ejphar.2020.173563] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 12/24/2022]
Abstract
Acute respiratory distress syndrome is an inflammatory disease with no effective pharmacological treatment. We investigated the therapeutic effect of HY1702, a new small molecule diterpene obtained from the processing and modification of Glaucocalyxin A and may exhibit anti-inflammatory activity. Specifically, we studied the anti-inflammatory effects of HY1702 on lipopolysaccharide-induced inflammatory responses in RAW264.7 and THP-1 cells in vitro and its protective efficacy on lipopolysaccharide-induced mild acute respiratory distress syndrome in mice. Our results showed that HY1702 significantly decreased lipopolysaccharide-induced inflammatory cytokine expression in RAW264.7 and THP-1 cells and attenuated the secretion of nitric oxide and prostaglandin E2 by down-regulating the expression of inducible nitric oxide synthase and cyclooxygenase 2 in RAW264.7 cells. In mice with lipopolysaccharide-induced mild acute respiratory distress syndrome, HY1702 alleviated histological alterations in the lungs and reduced the alveolar cavity protein leakage and inflammatory cytokine expression in murine bronchial alveolar lavage fluid. HY1702 decreased the myeloperoxidase activity and lung wet to dry weight ratio. In our mechanism studies in lipopolysaccharide-exposed RAW264.7 cells, HY1702 suppressed the inflammation stimulated by lipopolysaccharide through inhibiting phosphorylation of inhibitor of nuclear factor κB kinase subunit α/β (IKKα/β) and inhibitor of nuclear factor κB subunit α (IκBα), further affecting the nuclear transfer of phosphorylated p65. Meanwhile, phosphorylation of p38 mitogen-activated protein (MAP) kinase and extracellular signal-regulated kinase (ERK) was inhibited. These data suggest that HY1702 can reduce inflammation on lipopolysaccharide-stimulated macrophages and attenuate the symptoms of mild acute respiratory distress syndrome in a murine model by regulating the nuclear factor κB and MAP kinase signalling pathways.
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Affiliation(s)
- Mengfei Wang
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, 215123, PR China
| | - Tong Zhang
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, 215123, PR China
| | - Ling Li
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, 215123, PR China
| | - Qing Xie
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, 215123, PR China
| | - Yanping Wang
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, 215123, PR China
| | - Yunsen Li
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, 215123, PR China.
| | - Zijun Chen
- Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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Hashemzaei M, Mamoulakis C, Tsarouhas K, Georgiadis G, Lazopoulos G, Tsatsakis A, Shojaei Asrami E, Rezaee R. Crocin: A fighter against inflammation and pain. Food Chem Toxicol 2020; 143:111521. [DOI: 10.1016/j.fct.2020.111521] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023]
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Bohr A, Tsapis N, Foged C, Andreana I, Yang M, Fattal E. Treatment of acute lung inflammation by pulmonary delivery of anti-TNF-α siRNA with PAMAM dendrimers in a murine model. Eur J Pharm Biopharm 2020; 156:114-120. [PMID: 32798665 PMCID: PMC7425770 DOI: 10.1016/j.ejpb.2020.08.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/08/2020] [Accepted: 08/10/2020] [Indexed: 11/19/2022]
Abstract
To improve the efficacy of nucleic acid-based therapeutics, e.g., small interfering RNA (siRNA), transfection agents are needed for efficient delivery into cells. Several classes of dendrimers have been found useful as transfection agents for the delivery of siRNA because their surface can readily be functionalized, and the size of the dendriplexes they form with siRNA is within the range of conventional nanomedicine. In this study, commercially available generation 3 poly(amidoamine) (PAMAM) dendrimer was investigated for pulmonary delivery of siRNA directed against tumor necrosis factor (TNF) α for the treatment of acute lung inflammation. Delivery efficiency was assessed in vitro in the RAW264.7 macrophage cell line activated with lipopolysaccharide (LPS), and efficacy was evaluated in vivo in a murine model of LPS-induced lung inflammation upon pre-treatment with TNF-α siRNA. The PAMAM dendrimer-siRNA complexes (dendriplexes) displayed strong siRNA condensation and high cellular uptake in macrophages compared with non-complexed siRNA. Q-PCR analyses showed that the dendriplexes mediated efficient and specific TNF-α silencing in vitro, as compared to non-complexed siRNA and dendriplexes with negative control siRNA. Also in vivo, the PAMAM dendriplexes induced efficacious TNF-α siRNA inhibition, as compared to non-complexed siRNA, upon pulmonary administration to mice with LPS-induced lung inflammation. Hence, these data suggest that PAMAM dendrimers are promising for the local delivery of TNF-α siRNA in the treatment of lung inflammation via pulmonary administration.
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Affiliation(s)
- Adam Bohr
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296 Châtenay-Malabry, France; Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Nicolas Tsapis
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296 Châtenay-Malabry, France
| | - Camilla Foged
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Ilaria Andreana
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296 Châtenay-Malabry, France
| | - Mingshi Yang
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Elias Fattal
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296 Châtenay-Malabry, France.
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Abdel-Latif GA, Elwahab AHA, Hasan RA, ElMongy NF, Ramzy MM, Louka ML, Schaalan MF. A novel protective role of sacubitril/valsartan in cyclophosphamide induced lung injury in rats: impact of miRNA-150-3p on NF-κB/MAPK signaling trajectories. Sci Rep 2020; 10:13045. [PMID: 32747644 DOI: 10.1038/s41598-020-69810-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 06/30/2020] [Indexed: 12/12/2022] Open
Abstract
Cyclophosphamide (CP) is a chemotherapeutic agent that induces oxidative stress causing multiple organ damage. Sacubitril/valsartan, is a combined formulation of neprilysin inhibitor (sacubitril) and angiotensin II receptor blocker (valsartan), that induces the protective effect of brain natriuretic peptide. The aim of the current study is to investigate the prophylactic impacts of sacubitril/valsartan versus valsartan against CP-induced lung toxicity in rats. Rats were assigned randomly into 6 groups; control; received corn oil (2 ml/kg/day; p.o. for 6 days), sacubitril/valsartan (30 mg/kg; p.o. for 6 days), valsartan (15 mg/kg; p.o. for 6 days), CP (200 mg/kg; i.p. on day 5), sacubitril/valsartan + CP (30 mg/kg; p.o. for 6 days, 200 mg/kg; i.p. single dose on day 5, respectively), valsartan + CP (15 mg/kg; p.o. for 6 days, 200 mg/kg; i.p. single dose on day 5, respectively). Both sacubitril/valsartan and valsartan produced a significant decrease in the inflammation and fibrosis markers in the BALF, in comparison with the CP group. Both sacubitril/valsartan and valsartan produced an apparent decrease in the relative genes expression of miR-150-3p and NF-κB, as well as a significant decrease in the relative expression of P38 and ERK1/2 MAPKs and an increase in the relative gene expression of Nrf-2, compared to CP group. Intriguingly, sacubitril/valsartan , showed subtle superiority in almost all investigated parameters, compared to valsartan. In conclusion, sacubitril/valsartan effectively abrogated the CP induced lung inflammation and fibrosis, providing a potential promising protection that could be linked to their ability to inhibit miR-150-3p via inhibition of NF-κB and MAPK signaling pathways.
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Chen X, Zhao C, Zhang C, Li Q, Chen J, Cheng L, Zhou J, Su X, Song Y. Vagal-α7nAChR signaling promotes lung stem cells regeneration via fibroblast growth factor 10 during lung injury repair. Stem Cell Res Ther 2020; 11:230. [PMID: 32522255 PMCID: PMC7288553 DOI: 10.1186/s13287-020-01757-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/19/2020] [Accepted: 06/01/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Proliferation and transdifferentiation of lung stem cells (LSCs) could promote lung injury repair. The distal airways of the lung are innervated by the vagus nerve. Vagal-alpha7 nicotinic acetylcholine receptor (α7nAChR) signaling plays a key role in regulating lung infection and inflammation; however, whether this pathway could regulate LSCs remains unknown. METHODS LSCs (Sca1+CD45-CD31- cells) were isolated and characterized according to a previously published protocol. α7nAChR knockout mice and wild-type littermates were intratracheally challenged with lipopolysaccharide (LPS) to induce lung injury. A cervical vagotomy was performed to study the regulatory effect of the vagus nerve on LSCs-mediated lung repair. α7nAChR agonist or fibroblast growth factor 10 (FGF10) was intratracheally delivered to mice. A single-cell suspension of lung cells was analyzed by flow cytometry. Lung tissues were collected for histology, quantitative real-time polymerase chain reaction (RT-PCR), and immunohistochemistry. RESULTS We found that LSCs maintained multilineage differentiation ability and transdifferentiated into alveolar epithelial type II cells (AEC2) following FGF10 stimulation in vitro. Vagotomy or α7nAChR deficiency reduced lung Ki67+ LSCs expansion and hampered the resolution of LPS-induced lung injury. Vagotomy or α7nAChR deficiency decreased lung FGF10 expression and the number of AEC2. The α7nAChR agonist-GTS-21 reversed the reduction of FGF10 expression in the lungs, as well as the number of Ki67+ cells, LSCs, Ki67+ LSCs, and AEC2 in LPS-challenged vagotomized mice. Supplementation with FGF10 counteracted the loss of Ki67+ LSCs and AEC2 in LPS-challenged α7nAChR knockout mice. CONCLUSIONS The vagus nerve deploys α7nAChR to enhance LSCs proliferation and transdifferentiation and promote lung repair in an FGF10-dependent manner during LPS-induced lung injury.
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Affiliation(s)
- Xiaoyan Chen
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University and Shanghai Respiratory Research Institute, 180 Fenglin Road, Shanghai, 200032, People's Republic of China
| | - Caiqi Zhao
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai, 200031, People's Republic of China
| | - Cuiping Zhang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University and Shanghai Respiratory Research Institute, 180 Fenglin Road, Shanghai, 200032, People's Republic of China
| | - Qingmei Li
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai, 200031, People's Republic of China
| | - Jie Chen
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai, 200031, People's Republic of China
| | - Lianping Cheng
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai, 200031, People's Republic of China
| | - Jian Zhou
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University and Shanghai Respiratory Research Institute, 180 Fenglin Road, Shanghai, 200032, People's Republic of China
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai, 200031, People's Republic of China.
| | - Yuanlin Song
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University and Shanghai Respiratory Research Institute, 180 Fenglin Road, Shanghai, 200032, People's Republic of China. .,Department of Pulmonary Medicine, Zhongshan Hospital, Qingpu Branch, Fudan University, Shanghai, People's Republic of China. .,National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, People's Republic of China.
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Cai W, Shen Y, Han N, Chen H, Zhang M. Evaluation of lipopolysaccharide-induced acute lung injury attenuation in mice by Glycyrrhiza glabra. Pharmacogn Mag 2020. [DOI: 10.4103/pm.pm_189_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Park KH, Chung EY, Choi YN, Jang HY, Kim JS, Kim GB. Oral administration of Ulmus davidiana extract suppresses interleukin-1β expression in LPS-induced immune responses and lung injury. Genes Genomics 2019; 42:87-95. [PMID: 31736005 DOI: 10.1007/s13258-019-00883-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/28/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Ulmus davidiana (UD) is a traditional Korean herb medicine that is used to treat inflammatory disorders. UD has been shown to modulate a number of inflammatory processes in vitro or in vivo studies. However, the molecular mechanisms of UD on lipopolysaccharide (LPS)-induced acute lung injury remain to be understood. OBJECTIVE The primary objective of this study is to determine the effect of UD bark water extract on LPS-induced immune responses and lung injury using both in vitro and in vivo models. METHODS RAW 264.7 cells and a rat model of acute lung injury (ALI) were used to study the effects of UD on several parameters. Nitrite level, lactate dehydrogenase (LDH) level, and superoxide dismutase (SOD) activities were measured. Tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and plasma transaminase activities in blood were also determined. Pathological investigations were also performed. RESULTS LPS infusion resulted in elevated IL-1β mRNA expression, nitrite levels, TNF-α expression, and IL-1β expression in RAW 264.7 cells. LPS infusion also increased levels of nitrite/nitrate, total protein, LDH, and TNF-α in bronchoalveolar lavage fluid, but reduced SOD levels in ex vivo and in vivo models. UD administration ameliorated all these inflammatory markers. In particular, treatment with UD reduced LPS-induced nitrite production in RAW 264.7 cells in a dose-dependent manner. UD treatment also counteracted the LPS-induced increase in alanine aminotransferase (ALT) and aspartate transaminase (AST) activity in rat plasma, leading to a significant reduction in ALT and AST activity. CONCLUSIONS The results revealed that UD treatment reduces LPS-induced nitrite production, IL-1β mRNA expression, and TNF-α expression. In addition, LPS-induced decrease in SOD level is significantly elevated by UD administration. These results indicate that UD extract merits consideration as a potential drug for treating and/or preventing ALI.
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Affiliation(s)
- Kwang-Hyun Park
- Department of Oriental Pharmaceutical Development, Nambu University, Gwangju, 62271, Republic of Korea.,Department of Emergency Medical Rescue, Nambu University, Gwangju, 62271, Republic of Korea
| | - Eun-Yong Chung
- Department of Anesthesiology and Pain Medicine, Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, 14647, Republic of Korea
| | - Yu-Na Choi
- Department of Anesthesiology and Pain Medicine, Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, 14647, Republic of Korea
| | - Hye-Yeon Jang
- Department of Biochemistry, Chonbuk National University Medical School, Jeonju, 54907, Republic of Korea
| | - Jong-Suk Kim
- Department of Biochemistry, Chonbuk National University Medical School, Jeonju, 54907, Republic of Korea.
| | - Gi-Beum Kim
- Eouidang Agricultural Company, Wanju, 55360, Republic of Korea.
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Oikawa S, Kai Y, Mano A, Sugama S, Mizoguchi N, Tsuda M, Muramoto K, Kakinuma Y. Potentiating a non-neuronal cardiac cholinergic system reinforces the functional integrity of the blood brain barrier associated with systemic anti-inflammatory responses. Brain Behav Immun 2019; 81:122-137. [PMID: 31176726 DOI: 10.1016/j.bbi.2019.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/21/2019] [Accepted: 06/04/2019] [Indexed: 10/26/2022] Open
Abstract
We previously reported that the heart-specific choline acetyltransferase (ChAT) gene overexpressing mice (ChAT tg) show specific phenotypes including ischemic tolerance and the CNS stress tolerance. In the current study, we focused on molecular mechanisms responsible for systemic and localized anti-inflammatory phenotypes of ChAT tg. ChAT tg were resistant to systemic inflammation induced by lipopolysaccharides due to an attenuated cytokine response. In addition, ChAT tg, originally equipped with less reactive Kupffer cells, were refractory to brain cold injury, with decreased blood brain barrier (BBB) permeability and reduced inflammation. This is because ChAT tg brain endothelial cells expressed more claudin-5, and their astrocytes were less reactive, causing decreased hypertrophy. Moreover, reconstruction of the BBB integrity in vitro confirmed the consolidation of ChAT tg. ChAT tg were also resistant to 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) neuronal toxicity due to lower mortality rate and neuronal loss of substantia nigra. Additionally, ChAT tg subjected to MPTP showed attenuated BBB disruption, as evident from reduced sodium fluorescein levels in the brain parenchyma. The activated central cholinergic pathway of ChAT tg lead to anti-convulsive effects like vagus nerve stimulation. However, DSP-4, a noradrenergic neuron-selective neurotoxin against the CNS including the locus ceruleus, abrogated the beneficial phenotype and vagotomy attenuated expression of claudin-5, suggesting the link between the cholinergic pathway and BBB function. Altogether, these findings indicate that ChAT tg possess an anti-inflammatory response potential, associated with upregulated claudin-5, leading to the consolidation of BBB integrity. These characteristics protect ChAT tg against systemic and localized inflammatory pathological disorders, which targets the CNS.
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Affiliation(s)
- Shino Oikawa
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Yuko Kai
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Asuka Mano
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Shuei Sugama
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Naoko Mizoguchi
- Department of Physiology, School of Dentistry, Meikai University, Sakaido, Saitama 350-0283, Japan
| | - Masayuki Tsuda
- Institute for Laboratory Animal Research, Kochi Medical School, Nankoku, Kochi 783-8505, Japan
| | - Kazuyo Muramoto
- Department of Physiology, School of Dentistry, Meikai University, Sakaido, Saitama 350-0283, Japan
| | - Yoshihiko Kakinuma
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan.
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Zhang H, Sha J, Feng X, Hu X, Chen Y, Li B, Fan H. Dexmedetomidine ameliorates LPS induced acute lung injury via GSK-3β/STAT3-NF-κB signaling pathway in rats. Int Immunopharmacol 2019; 74:105717. [PMID: 31254953 DOI: 10.1016/j.intimp.2019.105717] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 06/12/2019] [Accepted: 06/21/2019] [Indexed: 12/14/2022]
Abstract
Acute lung injury (ALI) is a serious complication of sepsis and an important cause of death in intensive care. Studies have shown that DEX can inhibit inflammation. However, the anti-inflammatory effect and protective mechanism of DEX in lipopolysaccharide (LPS) induced ALI are still unclear. ALI model was established by intraperitoneal injection of LPS (10 mg/kg) in Sprague-Dawley (SD) male rats. Firstly, at 4, 6, 8, 12 and 24 h after LPS treatment, lung injury including pathologic histology, lung edema, and inflammation were detected. The optimal time point for lung injury was determined to be 12 h, at which time DEX was added to further test. Furthermore, STAT3 inhibitor (NSC74859) and GSK-3β inhibitor (SB216763) were added to verify the role of STAT3, GSK-3β and NF-κB in ameliorated ALI. Our results show that DEX pretreatment significantly decreased lung Wet-to-Dry weight (W/D) ratio and MPO activity and ameliorated LPS induced lung histopathological alterations. In addition, we confirmed that DEX can increased the phosphorylation of STAT3 and GSK-3β, and inhibit the phosphorylation of nuclear factor-κB (NF-κB) p65 in the inflammatory response induced by LPS. What's more, NSC74859 inhibited the phosphorylation of STAT3 and reversed the protect effect of DEX on LPS. SB216763 inhibited the phosphorylation of NF-κB and reversed the damage effect of LPS and plays the same anti-inflammatory effect as DEX. In summary, our data demonstrated that DEX can ameliorate ALI induced by LPS through GSK-3β/STAT3-NF-κB pathway.
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Affiliation(s)
- Huayun Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Jichen Sha
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xiujing Feng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xueyuan Hu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yongping Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Bei Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Honggang Fan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China.
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Zhang C, He Y, Shen Y. L-Lysine protects against sepsis-induced chronic lung injury in male albino rats. Biomed Pharmacother 2019; 117:109043. [PMID: 31238259 DOI: 10.1016/j.biopha.2019.109043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/23/2019] [Accepted: 05/29/2019] [Indexed: 01/03/2023] Open
Abstract
Sepsis is a severe, life-threatening condition primarily caused by the cellular response to infection. Sepsis leads to increased tissue damage and mortality in patients in the intensive care unit. L-Lysine is an essential amino acid required for protein biosynthesis and is abundant in lamb, pork, eggs, red meat, fish oil, cheese, beans, peas, and soy. Male albino rats were divided into sham, control, 10-mg/kg bwt L-lysine, and 20-mg/kg bwt L-lysine groups. At the end of treatment, we determined the levels of oxidative and inflammatory markers, myeloperoxidase (MPO) and catalase activities, total cell count, the wet/dry ratio of lung tissue, and total protein content. Furthermore, the effect of L-lysine on the cellular architecture of lung tissue was evaluated. L-Lysine significantly reduced the magnitude of lipid peroxidation; total protein content; wet/dry ratio of lung tissue; tumor necrosis factor-alpha, interleukin-8, and macrophage inhibitory factor levels; MPO activity; and total cell, neutrophil, and lymphocyte counts, and it increased the reduced glutathione levels and the glutathione peroxidase, superoxide dismutase, and catalase activities. A normal cellular architecture was noted in rats in the sham group, whereas proinflammatory changes, such as edema and neutrophilic infiltration, were detected in rats in the control group. L-lysine significantly ameliorated these proinflammatory changes. Thus, L-lysine has the potential for the treatment of sepsis-induced CLI.
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Affiliation(s)
- Chunyun Zhang
- Department of Critical Care Medicine, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510700, China.
| | - Yaojun He
- Department of Critical Care Medicine, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510700, China
| | - Yifeng Shen
- Guangzhou Wondfo Biotech Co.Ltd, Guangzhou, Guangdong, 510700, China
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Zhang J, Zhou H, Liu J, Meng C, Deng L, Li W. Protective effects of hydrogen inhalation during the warm ischemia phase against lung ischemia-reperfusion injury in rat donors after cardiac death. Microvasc Res 2019; 125:103885. [PMID: 31175855 DOI: 10.1016/j.mvr.2019.103885] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 05/09/2019] [Accepted: 06/03/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Successful amelioration of long-term warm ischemia lung injury in donors after cardiac death (DCDs) can remarkably improve outcomes. Hydrogen gas provides potent anti-inflammatory and antioxidant effects against ischemia-reperfusion injury (IRI). This study observed the effects of hydrogen inhalation on lung grafts during the warm ischemia phase in cardiac death donors. METHODS After cardiac death, rat donor lungs (n = 8) underwent mechanical ventilation with 40% oxygen plus 60% nitrogen (control group) or 3% hydrogen and 40% oxygen plus 57% nitrogen (hydrogen group) for 2 h during the warm ischemia phase in situ. Then, lung transplantation was performed after 2 h of cold storage and 3 h of recipient reperfusion prior to lung graft assessment. Rats that underwent left thoracotomy without transplantation served as the sham group (n = 8). The results of static compliance and arterial blood gas analysis were assessed in the recipients. The wet-to-dry weight ratio (W/D), inflammation, oxidative stress, cell apoptosis and histologic changes were evaluated after 3 h of reperfusion. Nuclear factor kappa B (NF-κB) protein expression in the graft was analyzed by Western blotting. RESULTS Compared with the sham group, lung function, W/D, inflammatory reaction, oxidative stress and histological changes were decreased in both transplant groups (control and hydrogen groups). However, compared with the control group, exposure to 3% hydrogen significantly improved lung graft static compliance and oxygenation and remarkably decreased the wet-to-dry weight ratio, inflammatory reactions, and lipid peroxidation. Furthermore, hydrogen improved the lung graft histological changes, decreased the lung injury score and apoptotic index and reduced NF-κB nuclear accumulation in the lung grafts. CONCLUSION Lung inhalation with 3% hydrogen during the warm ischemia phase attenuated lung graft IRI via NF-κB-dependent anti-inflammatory and antioxidative effects in rat donors after cardiac death.
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Cinar I, Sirin B, Aydin P, Toktay E, Cadirci E, Halici I, Halici Z. Ameliorative effect of gossypin against acute lung injury in experimental sepsis model of rats. Life Sci 2019; 221:327-334. [DOI: 10.1016/j.lfs.2019.02.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/08/2019] [Accepted: 02/18/2019] [Indexed: 02/06/2023]
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Li MY, Sun L, Niu XT, Chen XM, Tian JX, Kong YD, Wang GQ. Astaxanthin protects lipopolysaccharide-induced inflammatory response in Channa argus through inhibiting NF-κB and MAPKs signaling pathways. Fish Shellfish Immunol 2019; 86:280-286. [PMID: 30448447 DOI: 10.1016/j.fsi.2018.11.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 11/01/2018] [Accepted: 11/04/2018] [Indexed: 06/09/2023]
Abstract
The present study was conducted to evaluate the protective effects of astaxanthin against lipopolysaccharide (LPS)-induced inflammatory responses in Channa argus in vivo and ex vivo. Primary hepatocytes were exposed to different concentrations of LPS for 24 h to induce an inflammatory response, and the protective effects of astaxanthin against LPS-induced inflammation were studied ex vivo and in vivo. Hepatocytes exposed to LPS (5-20 μg mL-1) alone for 24 h resulted in a significant increase in lactate dehydrogenase release (LDH), Nitric oxide (NO) production and Malondialdehyde (MDA) content, 10 μg mL-1 LPS could induced inflammatory response in hepatocytes. Gene expression of TLR4, NFkBp65, MAPKp38, TNF-α, IL-6 and IL-1β mRNA expression were also enhanced ex vivo (p < 0.05). In vivo test demonstrated that pretreatment with astaxanthin prevented the LPS-induced upregulation of pro-inflammatory cytokines TNF-α, IL-6 and IL-1β. Besides, astaxanthin blocked the expression of Toll-like receptor 4 (TLR4) and then suppressed the phosphorylation of nuclear transcription factor-kappa B (NF-κB) p65 and degradation inhibitor of NF-κBα (IκBα). Further study showed that astaxanthin could suppress the phosphorylation of p38, extracellular signal-regulated kinase (ERK) and c-jun NH2-terminal kinase (JNK) in mitogen-activated protein kinase (MAPK) signal pathway. In conclusion, our results suggest that astaxanthin played an anti-inflammatory role by regulating TLR4 and the NF-κB and MAPK signaling pathways in C. argus.
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Affiliation(s)
- Mu-Yang Li
- College of Animal Science and Technology, Jilin Agriculture University, 2888 Xincheng Road, Changchun, Jilin, China
| | - Li Sun
- College of Animal Science and Technology, Jilin Agriculture University, 2888 Xincheng Road, Changchun, Jilin, China; Changchun Testing Center of Quality and Safety in Aquatic Product, 777 CaiYu Road, Changchun, Jilin, China
| | - Xiao-Tian Niu
- College of Animal Science and Technology, Jilin Agriculture University, 2888 Xincheng Road, Changchun, Jilin, China
| | - Xiu-Mei Chen
- College of Animal Science and Technology, Jilin Agriculture University, 2888 Xincheng Road, Changchun, Jilin, China
| | - Jia-Xin Tian
- College of Animal Science and Technology, Jilin Agriculture University, 2888 Xincheng Road, Changchun, Jilin, China
| | - Yi-Di Kong
- College of Animal Science and Technology, Jilin Agriculture University, 2888 Xincheng Road, Changchun, Jilin, China
| | - Gui-Qin Wang
- College of Animal Science and Technology, Jilin Agriculture University, 2888 Xincheng Road, Changchun, Jilin, China.
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Wang F, Chen S, Deng L, Chen L, Huang Y, Tian M, Li C, Zhou X. Protective Effects of Astragaloside IV against LPS-Induced Endometritis in Mice through Inhibiting Activation of the NF-κB, p38 and JNK Signaling Pathways. Molecules 2019; 24:molecules24020373. [PMID: 30669661 PMCID: PMC6360020 DOI: 10.3390/molecules24020373] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/02/2019] [Accepted: 01/18/2019] [Indexed: 01/09/2023] Open
Abstract
Endometritis, inflammation of the endometrium, is a common reproductive obstacle disease that can lead to infertility in female animals. Astragaloside IV (AS IV), one of the major and active components of the Astragalus membranaceus (Fisch.) Bunge, is known for its anti-inflammatory effects. In the present study, the effects and mechanisms of AS IV on lipopolysaccharide (LPS)-induced endometritis were investigated using a mouse model. Female mice were prepared with AS IV (0.01 mg/g) by gavage for six days before being stimulated with LPS. The results showed that the histopathological changes, levels of inflammatory cytokines (IL-1β and TNF-α), concentration of NO, and myeloperoxidase (MPO) activity in LPS-induced uteri were attenuated significantly by pretreatment with AS IV. Furthermore, LPS-induced activations of NF-κB, p38, and JNK signal pathways were suppressed by pretreatment with AS IV. In conclusion, the data provided new evidence that AS IV effectively attenuates LPS-induced endometritis through inhibition of TLR4-mediated NF-κB, p38, and JNK signaling pathways, implying that AS IV might become a promising potential anti-inflammatory agent for endometritis and other inflammatory diseases.
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Affiliation(s)
- Fengge Wang
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
| | - Shuxiong Chen
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
| | - Liang Deng
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
| | - Lu Chen
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
| | - Yuwen Huang
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
| | - Meng Tian
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
| | - Chunjin Li
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
| | - Xu Zhou
- College of Animal Sciences, Jilin University, Changchun, 5333 Xian Road, Changchun, Jilin 130062, China.
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Liu Y, Wang Y, Song X, Dong L, Wang W, Wu H. P38 mitogen-activated protein kinase inhibition attenuates mechanical stress induced lung injury via up-regulating AQP5 expression in rats. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1590159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Yang Liu
- Department of Anesthesiology, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong, PR China
| | - Yuelan Wang
- Department of Anesthesiology, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong, PR China
| | - Xiumei Song
- Department of Anesthesiology, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong, PR China
| | - Ling Dong
- Department of Anesthesiology, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong, PR China
| | - Wei Wang
- Department of Anesthesiology, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong, PR China
| | - Hongchao Wu
- Department of Anesthesiology, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong, PR China
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Gao Z, Liu X, Wang W, Yang Q, Dong Y, Xu N, Zhang C, Song X, Ren Z, Zhao F, Zhang J, Jia L. Characteristic anti-inflammatory and antioxidative effects of enzymatic- and acidic- hydrolysed mycelium polysaccharides by Oudemansiella radicata on LPS-induced lung injury. Carbohydr Polym 2019; 204:142-51. [DOI: 10.1016/j.carbpol.2018.09.073] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 09/05/2018] [Accepted: 09/27/2018] [Indexed: 01/05/2023]
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Yosri H, Said E, Elkashef WF, Gameil NM. Modulatory role of gabapentin against ovalbumin-induced asthma, bronchial and airway inflammation in mice. Environ Toxicol Pharmacol 2018; 64:18-25. [PMID: 30286334 DOI: 10.1016/j.etap.2018.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/05/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
Allergic asthma is a type of chronic immune-mediated inflammatory lung disorders with constantly increased worldwide prevalence. Gabapentin is an L-type calcium channel blocker used essentially as antiepileptic and recently has been indicated for management of post-operative and neuropathic pains as an anti-inflammatory. The current study was conducted to evaluate the anti-inflammatory and anti-allergic properties of gabapentin in a mouse-model of Ovalbumin-induced allergic asthma. Mice received OVA (10 mg) adsorbed on Al(OH)3 on days 0 and 7 and were challenged by exposure to nebulized OVA solution (1%) form days 14-16. Asthma induction was associated with significant biochemical, oxidative and inflammatory imbalance. Daily oral gabapentin (50 mg/kg), significantly reduced lung inflammatory cells counts', serum LDH and catalase activities and lung/body weight index. Moreover, gabapentin significantly increased lung GSH concentration and enhanced SOD activity. Lung contents of TNFα, IL-4 and IL-13 significantly declined as well. IL-13; is the major contributor to airway hyper-responsiveness; the charetrestic hallmark of asthma and IL-4; a major chemoattractant cytokine. Lung histopathology significantly improved parallel to the biochemical improvements. In conclusion; Gabapentin's modulatory effect on IL-4, IL-13 and TNFα activities accounts for the observed anti-inflammatory and anti-allergic properties.
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Affiliation(s)
- Haidy Yosri
- Dep. of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Eman Said
- Dep. of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.
| | - Wagdi F Elkashef
- Dep. of Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Nariman M Gameil
- Dep. of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Nessaibia I, Fouache A, Lobaccaro JMA, Tahraoui A, Trousson A, Souidi M. Stress as an immunomodulator: liver X receptors maybe the answer. Inflammopharmacology 2018; 27:15-25. [PMID: 30467620 DOI: 10.1007/s10787-018-0546-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/03/2018] [Indexed: 02/07/2023]
Abstract
Stress is a reflex response, both psychological and physiological, of the body to a difficult situation that requires adaptation. Stress is at the intersection of the objective event and the subjective event. The physiological mechanisms involved in chronic stress are numerous and can contribute to a wide variety of disorders, in all systems including the immune system. Stress modifies the Th1/Th2 balance via the HPA axis and a set of immune mediators. This will make the body more vulnerable to external infections in a scientific way while others claim the opposite, stress could be considered immune stimulatory. The development of synthetic LXR ligands such as T0901317 and GW3965 as well as an understanding of the direct involvement of these receptors in the regulation of proopiomelanocortin (POMC) gene expression and indirectly by producing a variety of cytokines in a stressor response, will open in the near future new therapeutic methods against the undesirable effects of stress on the behavior of the immune system.
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Affiliation(s)
- Issam Nessaibia
- CNRS UMR 6293, Laboratory GReD, INSERM U 1103, Clermont Auvergne University, 28 Place Henri Dunant, 63000, Clermont-Ferrand, France.
- Laboratory of Applied Neuro-Endocrinology, Department of Biology, Badji-Mokhtar University, Annaba, Algeria.
| | - Allan Fouache
- CNRS UMR 6293, Laboratory GReD, INSERM U 1103, Clermont Auvergne University, 28 Place Henri Dunant, 63000, Clermont-Ferrand, France
| | - Jean-Marc A Lobaccaro
- CNRS UMR 6293, Laboratory GReD, INSERM U 1103, Clermont Auvergne University, 28 Place Henri Dunant, 63000, Clermont-Ferrand, France
| | - Abdelkrim Tahraoui
- Laboratory of Applied Neuro-Endocrinology, Department of Biology, Badji-Mokhtar University, Annaba, Algeria
| | - Amalia Trousson
- CNRS UMR 6293, Laboratory GReD, INSERM U 1103, Clermont Auvergne University, 28 Place Henri Dunant, 63000, Clermont-Ferrand, France
| | - Maâmar Souidi
- Institut de radioprotection et de sûreté nucléaire, Direction de la radioprotection de l'homme, IRSN, Fontenay-aux-Roses Cedex, France
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Rungsung S, Singh TU, Rabha DJ, Kumar T, Cholenahalli Lingaraju M, Parida S, Paul A, Sahoo M, Kumar D. Luteolin attenuates acute lung injury in experimental mouse model of sepsis. Cytokine 2018; 110:333-343. [DOI: 10.1016/j.cyto.2018.03.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 03/24/2018] [Accepted: 03/30/2018] [Indexed: 12/30/2022]
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Ji XX, Ji XJ, Li QQ, Lu XX, Luo L. Rosiglitazone Reduces Apoptosis and Inflammation in Lipopolysaccharide-Induced Human Umbilical Vein Endothelial Cells. Med Sci Monit 2018; 24:6200-6207. [PMID: 30185768 PMCID: PMC6140784 DOI: 10.12659/msm.910036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Although the peroxisome proliferator-activated receptor-g (PPARg) agonist rosiglitazone has significant anti-inflammatory properties, no scientific studies have provided new insights in its pharmacological properties with respect to acute respiratory distress syndrome (ARDS). The present investigation aimed to evaluate whether rosiglitazone can reduce apoptosis and inflammation in a lipopolysaccharide (LPS)-induced acute respiratory distress syndrome in vitro model. MATERIAL AND METHODS Human umbilical vein endothelial cells (HUVECs) were treated with 1 µg/ml LPS in the absence or presence of 10 µM rosiglitazone for 24 h. Cell viability was measured by MTT assay. Flow cytometry was used to examine the cell apoptosis and ROS production in HUVECs response to LPS and rosiglitazone. The levels of pro-inflammatory cytokine factors, including TNF-α, IL-6, CXCL12, and CXCR4, were measured by ELISA, real-time PCR, and Western blot assay, respectively. The expression of PPARg, Bcl-2, and Bax and the activity of JAK2 and STAT3 were also investigated by Western blot assay. RESULTS We found that rosiglitazone significantly inhibited LPS-induced cell apoptosis, ROS production, and inflammation in HUVECs. Furthermore, we found a significant reduction of JAK2/STAT3 activation and the Bax/Bcl-2 ratio in LPS-induced HUVECs response to rosiglitazone treatment. CONCLUSIONS Treatment with rosiglitazone can reduce apoptosis and inflammation in HUVECs induced by LPS.
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Affiliation(s)
- Xiao-Xia Ji
- Department of Critical Care Medicine, Wuxi No.2 Hospital affiliated to Nanjing Medical University, Wuxi, Jiangsu, China (mainland)
| | - Xiao-Jing Ji
- Department of Internal Medicine, Wuxi No.2 Hospital affiliated to Nanjing Medical University, Wuxi, Jiangsu, China (mainland)
| | - Qian-Qian Li
- Department of Critical Care Medicine, Wuxi No.2 Hospital affiliated to Nanjing Medical University, Wuxi, Jiangsu, China (mainland)
| | - Xiao-Xian Lu
- Department of Critical Care Medicine, Wuxi No.2 Hospital affiliated to Nanjing Medical University, Wuxi, Jiangsu, China (mainland)
| | - Liang Luo
- Department of Critical Care Medicine, Wuxi No.2 Hospital affiliated to Nanjing Medical University, Wuxi, Jiangsu, China (mainland)
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Guo S, Jiang K, Wu H, Yang C, Yang Y, Yang J, Zhao G, Deng G. Magnoflorine Ameliorates Lipopolysaccharide-Induced Acute Lung Injury via Suppressing NF-κB and MAPK Activation. Front Pharmacol 2018; 9:982. [PMID: 30214410 PMCID: PMC6125611 DOI: 10.3389/fphar.2018.00982] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 08/10/2018] [Indexed: 01/27/2023] Open
Abstract
Acute lung injury (ALI) which is featured by a strong pulmonary inflammation, is a major cause of morbidity and mortality in critically ill patients. Magnoflorine, a quaternary alkaloid isolated from Chinese herb Magnolia or Aristolochia, has been reported to have potent anti-inflammatory properties. However, the effect of magnoflorine on lipopolysaccharide (LPS)-induced ALI in mice has not been reported. The purpose of the present study is to investigate the anti-inflammatory effect of magnoflorine on LPS-induced ALI and elucidate its possible molecular mechanisms in RAW264.7 cells. The results of histopathological changes as well as the myeloperoxidase (MPO) activity indicated that magnoflorine significantly alleviated the lung injury induced by LPS. In addition, qPCR results showed that magnoflorine dose-dependently decreased the expression of pro-inflammatory cytokines TNF-α, IL-1β, and IL-6. Immunofluorescence assay also confirmed that the level of Toll-like receptor 4 (TLR4) induced by LPS was inhibited by magnoflorine treatment. Further experiments were performed using Western blotting to detect the expression of related proteins in the NF-κB and MAPK signaling pathways. The results showed that magnoflorine suppressed the levels of phosphorylated p65, IκBα, p38, ERK, and JNK. In conclusion, all data indicate that magnoflorine could protect against LPS-induced inflammation in ALI at least partially by inhibiting TLR4-mediated NF-κB and MAPK signaling pathways.
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Affiliation(s)
- Shuai Guo
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Kangfeng Jiang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Haichong Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Chao Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yaping Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Jing Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Gan Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Ganzhen Deng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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Rizzi L, Gotti C, De Amici M, Dallanoce C, Matera C. A Small Library of 1,2,3-Triazole Analogs of CAP-55: Synthesis and Binding Affinity at Nicotinic Acetylcholine Receptors. Chem Biodivers 2018; 15:e1800210. [PMID: 29953725 DOI: 10.1002/cbdv.201800210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/26/2018] [Indexed: 11/08/2022]
Abstract
Alpha7 nicotinic acetylcholine receptor is emerging as a central regulator in inflammatory processes, as documented by increasing studies reported in the literature. For instance, the activation of this nicotinic receptor subtype in resident macrophages inhibits the production of pro-inflammatory cytokines, thereby attenuating local inflammatory responses, and may open a new window in the treatment of chronic inflammatory disease, such as Crohn's disease, rheumatoid arthritis, psoriasis, and asthma. In continuation of our ongoing research for the development of new cholinergic drug candidates, we selected the nicotine derivative CAP55, which was previously shown to exert anti-inflammatory effects via nicotinic stimulation, as a suitable compound for lead optimization. Through the isosteric replacement of its 3,5-disubstituted 4,5-dihydroisoxazole core with a 1,4-disubstituted 1,2,3-triazole ring, we could rapidly generate a small library of CAP55-related analogs via a one-pot copper(I)-catalyzed azide-alkyne cycloaddition. Receptor binding assays at nAChRs led to the identification of two promising derivatives, compounds 4 and 10, worthy of further pharmacological studies.
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Affiliation(s)
- Luca Rizzi
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Cecilia Gotti
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Neuroscienze, Via Vanvitelli 32, 20129, Milano, Italy.,Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, Via Vanvitelli 32, 20129, Milano, Italy
| | - Marco De Amici
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Clelia Dallanoce
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Carlo Matera
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
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Delgado-Vélez M, Lasalde-Dominicci JA. The Cholinergic Anti-Inflammatory Response and the Role of Macrophages in HIV-Induced Inflammation. Int J Mol Sci 2018; 19:ijms19051473. [PMID: 29772664 PMCID: PMC5983673 DOI: 10.3390/ijms19051473] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/11/2018] [Accepted: 04/29/2018] [Indexed: 12/20/2022] Open
Abstract
Macrophages are phagocytic immune cells that protect the body from foreign invaders and actively support the immune response by releasing anti- and proinflammatory cytokines. A seminal finding revolutionized the way macrophages are seen. The expression of the neuronal alpha7 nicotinic acetylcholine receptor (α7-nAChR) in macrophages led to the establishment of the cholinergic anti-inflammatory response (CAR) in which the activation of this receptor inactivates macrophage production of proinflammatory cytokines. This novel neuroimmune response soon began to emerge as a potential target to counteract inflammation during illness and infection states. Human immunodeficiency virus (HIV)-infected individuals suffer from chronic inflammation that persists even under antiretroviral therapy. Despite the CAR’s importance, few studies involving macrophages have been performed in the HIV field. Evidence demonstrates that monocyte-derived macrophages (MDMs) recovered from HIV-infected individuals are upregulated for α7-nAChR. Moreover, in vitro studies demonstrate that addition of an HIV viral constituent, gp120IIIB, to uninfected MDMs also upregulates the α7-nAChR. Importantly, contrary to what was expected, activation of upregulated α7-nAChRs in macrophages does not reduce inflammation, suggesting a CAR disruption. Although it is reasonable to consider this receptor as a pharmacological target, additional studies are necessary since its activity seems to differ from that observed in neurons.
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Affiliation(s)
- Manuel Delgado-Vélez
- Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico.
| | - José A Lasalde-Dominicci
- Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico.
- Department of Biology, University of Puerto Rico, Río Piedras Campus, San Juan 00931, Puerto Rico.
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan 00931, Puerto Rico.
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El-Kashef DH. Role of venlafaxine in prevention of cyclophosphamide-induced lung toxicity and airway hyperactivity in rats. Environ Toxicol Pharmacol 2018; 58:70-76. [PMID: 29306104 DOI: 10.1016/j.etap.2017.12.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/19/2017] [Accepted: 12/21/2017] [Indexed: 05/23/2023]
Abstract
Cyclophosphamide (CP) is a drug used in chemotherapy and management of neoplastic diseases. This study aimed to investigate the prophylactic impacts of venlafaxine against CP-induced lung toxicity in rats. Rats were assigned randomly into 3 groups; control, CP (150 mg/kg) and CP/venlafaxine (50 mg/kg). On the end day, rats were sacrificed then bronchoalveolar fluid (BALF) and lungs were harvested. CP produced significant decrease in animal body weights and significant increase in lung/body weight ratio; levels of LDH, total protein, total and differential cell counts in BALF in comparison with control group. Moreover, significant elevation incontents of MDA, NOx, TNF-α and IL-1β and significant decline in GSH, SOD activities were observed in lung tissues. CP increased the response of tracheal zigzag to ACh. Histopathological results showed that CP increased inflammation and fibrosis in lung tissues. Venlafaxine restored most parameters to the normal levels. This protective effect of venlafaxine could be linked to its ability to reduce oxidative stress and inflammation.
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Affiliation(s)
- Dalia H El-Kashef
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
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Kashiwagi S, Khan MA, Yasuhara S, Goto T, Kem WR, Tompkins RG, Kaneki M, Martyn JA. Prevention of Burn-Induced Inflammatory Responses and Muscle Wasting by GTS-21, a Specific Agonist for α7 Nicotinic Acetylcholine Receptors. Shock 2017; 47:61-9. [PMID: 27529131 DOI: 10.1097/SHK.0000000000000729] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Muscle wasting (MW) in catabolic conditions (e.g., burn injury [BI]) is a major risk factor affecting prognosis. Activation of interleukin-1β (IL-1β)/nuclear factor-kappa B (NF-κB), interleukin-6 (IL-6)/signal transducer and activator of transcription 3 (STAT3), and/or forkhead box O transcriptional factor (FOXO)-mediated gene transcription pathways is the pivotal trigger of inflammatory response-induced protein catabolic processes in muscle. The α7 acetylcholine receptors (α7AChRs) are upregulated in macrophages and peripheral tissues including skeletal muscle during MW conditions. Stimulation of α7AChRs mitigates inflammatory responses. Hypothesis tested is that attenuation of inflammation by α7AChR stimulation with specific α7AChR agonist, GTS-21, will reverse BI-induced body mass and MW by modulating inflammatory and proteolytic signals. METHODS Body surface area (30%) BI or sham BI mice were treated with GTS-21 or saline. Tibialis anterior (TA) muscle was harvested at 6 h, day 1 or 3 to examine inflammatory and proteolytic signals. RESULTS GTS-21 significantly ameliorated the BI-induced increased expression of inflammatory cytokines IL-6, IL-1β, C-X-C motif chemokine ligand 2 (6 h), phosphorylated STAT3, and NF-κB (day 1) in TA muscle. GTS-21 also significantly inhibited BI-induced increase of MuRF1 and FOXO1 (day 1). Consistent with the cytokine and inflammatory mediator changes, BI-induced body weight and TA muscle mass loss at day 3 were mitigated by GTS-21 treatment. The beneficial effect of GTS-21 on BI changes was absent in methyllycaconitine (α7AChR antagonist)-treated wild-type and α7AChR knockout mice. CONCLUSION GTS-21 stimulation of α7AChRs, by modulating multiple molecular signals related to inflammation and proteolysis, attenuates protein wasting, evidenced by maintenance of body weight and attenuation of distant muscle mass loss after BI. GTS-21 can be a novel, potent therapeutic option for reversal of BI-induced MW.
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Hu G, Hong D, Zhang T, Duan H, Wei P, Guo X, Mu X. Cynatratoside-C from Cynanchum atratum displays anti-inflammatory effect via suppressing TLR4 mediated NF-κB and MAPK signaling pathways in LPS-induced mastitis in mice. Chem Biol Interact 2018; 279:187-195. [DOI: 10.1016/j.cbi.2017.10.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 05/11/2017] [Accepted: 10/16/2017] [Indexed: 01/29/2023]
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Liu W, Zhu H, Fang H. Propofol Potentiates Sevoflurane-Induced Inhibition of Nuclear Factor--κB-Mediated Inflammatory Responses and Regulation of Mitogen-Activated Protein Kinases Pathways via Toll-like Receptor 4 Signaling in Lipopolysaccharide-Induced Acute Lung Injury in Mice. Am J Med Sci 2017; 354:493-505. [DOI: 10.1016/j.amjms.2017.06.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 06/01/2017] [Accepted: 06/19/2017] [Indexed: 12/24/2022]
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Mota CMD, Rodrigues-Santos C, Fernández RAR, Carolino ROG, Antunes-Rodrigues J, Anselmo-Franci JA, Branco LGS. Central serotonin attenuates LPS-induced systemic inflammation. Brain Behav Immun 2017; 66:372-381. [PMID: 28723348 DOI: 10.1016/j.bbi.2017.07.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/06/2017] [Accepted: 07/15/2017] [Indexed: 12/21/2022] Open
Abstract
Serotonin (5-HT) is a neuromodulator involved in several central-mediated mechanisms, such as endocrine processes, behavior, and sleep. Dysfunction of the serotonergic system is mainly linked to psychiatric disorders, but emerging evidence suggests that immune system activation may also alter brain 5-HT signaling. However, whether central 5-HT modulates systemic inflammation (SI) remains unknown. For this purpose, male Wistar rats (280-350g, 8-9weeks) were submitted to the experimental protocols beginning between 9 and 10AM with the performance of injections. The animals were housed at controlled conditions [temperature (25±1°C), light (06:00-18:00) and humidity (60-65%)]. Thus, we measured 5-HT and its metabolite 5-hydroxyindole-3-acetic acid (5-HIAA) in the anteroventral preoptic region [(AVPO) - the hierarchically most important region for body temperature (Tb) control] during lipopolysaccharide (LPS)-induced SI. We also combined LPS (100μg/kg) treatment with intracerebroventricular (icv) injection of 5-HT (5, 10 and 40μg/μL) and measured Tb ("hallmark" of SI), AVPO prostaglandin E2 [(PGE2) - an essential mediator of fever] and prostaglandin D2 [(PGD2) - a cryogenic mediator], plasma corticosterone [(CORT) - a stress marker with an endogenous anti-inflammatory effect] and interleukin-6 [(IL-6) - an immune mediator] levels. Detection limits of PGE2, PGD2, CORT and IL-6 assays were 39.1-2500pg/mL, 19.5-2500pg/mL, 0.12-2000μg/dL, and 0.125-8ng/mL, respectively. We also assessed tail skin temperature [used to calculate heat loss index (HLI)] to assess a key thermoeffector mechanism. As expected we observed LPS-induced increases in Tb, AVPO PGE2 (whereas PGD2 remained unchanged), plasma CORT and IL-6 levels, as well as a decrease in HLI. These changes were accompanied by reduced levels of AVPO 5-HT and 5-HIAA. Furthermore, we also observed a negative correlation between 5-HT and plasma CORT levels. Moreover, icv 5-HT (5, 10 and 40μg/μL) microinjection caused a U-shaped dose-response curve in LPS fever, in which the intermediate dose reduced the febrile response. Icv 5-HT (10μg/μL) microinjection prevented the LPS-induced increases in AVPO PGE2 (whereas not altering PGD2), plasma CORT and IL-6 levels, as well as preventing reduced HLI. Our data are consistent with the notion that AVPO 5-HT synthesis is down-regulated during SI, favoring AVPO PGE2 synthesis and consequently potentiating the immune response. These results reveal a novel effect of central 5-HT as an anti-inflammatory neuromodulator that may take place during psychiatric disorder treatment with 5-HT reuptake inhibitors as well as suggesting that 5-HT modulation per se is a potential therapeutic approach for inflammatory diseases.
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Affiliation(s)
- Clarissa M D Mota
- Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Caroline Rodrigues-Santos
- Department of Morphology, Physiology and Basic Pathology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Rodrigo A R Fernández
- Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Ruither O G Carolino
- Department of Morphology, Physiology and Basic Pathology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - José Antunes-Rodrigues
- Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Janete A Anselmo-Franci
- Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil; Department of Morphology, Physiology and Basic Pathology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Luiz G S Branco
- Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil; Department of Morphology, Physiology and Basic Pathology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Gao Z, Li J, Song X, Zhang J, Wang X, Jing H, Ren Z, Li S, Zhang C, Jia L. Antioxidative, anti-inflammation and lung-protective effects of mycelia selenium polysaccharides from Oudemansiella radicata. Int J Biol Macromol 2017; 104:1158-64. [DOI: 10.1016/j.ijbiomac.2017.07.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/03/2017] [Accepted: 07/05/2017] [Indexed: 12/14/2022]
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Erdenechimeg C, Guiqide A, Dejidmaa B, Chimedragchaa C, Purevsuren S. Total phenolic, flavonoid, alkaloid and iridoid content and preventive effect of Lider-7-tang on lipopolysaccharide-induced acute lung injury in rats. ACTA ACUST UNITED AC 2017; 50:e5916. [PMID: 29069220 PMCID: PMC5649862 DOI: 10.1590/1414-431x20175916] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 07/21/2017] [Indexed: 01/11/2023]
Abstract
Lider-7-tang, a medicine used for the treatment of respiratory diseases especially pneumonia and fever in Mongolian Traditional Medicine, was selected for this phytochemical and pharmacological study. The objectives of the study were to determine total biological active substances and analyze the effects of Lider-7-tang treatment in rats with acute lung injury (ALI). Quantitative determination of the total active constituents (phenolic, flavonoid, iridoid and alkaloid) of the methanol extract of Lider-7-tang was performed using Folin-Ciocalteu reagent, aluminum chloride reagent, Trim-Hill reagent, and Bromocresol green reagent, respectively. A total of fifty 8–10-week-old male Wistar rats (200–240 g) were randomized into three groups: control group, lipopolysaccharide (LPS) group (7.5 mg/kg) and LPS+Lider-7 group (90 mg/kg Lider-7-tang before LPS administration). The total content of alkaloids was 0.2±0.043%, total phenols 7.8±0.67%, flavonoids 3.12±0.206%, and iridoids 0.308±0.0095%. This study also evaluated the effects of Lider-7 on levels of inflammatory mediators by observing histopathological features associated with LPS-induced ALI. The rats pretreated with Lider-7 had significantly lower levels of IL-6 (at 3 and 6 h), and TNF-α (at 3, 6, 9, and 12 h). The current study showed that Lider-7 exerted a preventive effect against LPS-induced ALI, which appeared to be mediated by inhibiting the release of pro-inflammatory cytokines.
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Affiliation(s)
- Ch Erdenechimeg
- Institute of Traditional Medicine and Technology, Ulaanbaatar, Mongolia.,School of Pharmacy, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - A Guiqide
- The Inner Mongolia Autonomous Region International Mongolian Hospital, HuhHot, Inner Mongolia, China
| | - B Dejidmaa
- Institute of Traditional Medicine and Technology, Ulaanbaatar, Mongolia
| | - Ch Chimedragchaa
- Institute of Traditional Medicine and Technology, Ulaanbaatar, Mongolia
| | - S Purevsuren
- School of Pharmacy, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
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Sun C, Wu Q, Zhang X, He Q, Zhao H. Mechanistic Evaluation of the Protective Effect of Carnosine on Acute Lung Injury in Sepsis Rats. Pharmacology 2017; 100:292-300. [PMID: 28848223 DOI: 10.1159/000479879] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/28/2017] [Indexed: 11/19/2022]
Abstract
This study analyzes the sepsis healing therapeutic potential of carnosine against experimentally sepsis-induced male albino rats. Carnosine in 2 different doses, 25 mg/kg and 50 mg/kg, were administered for 30 consecutive days. At the end of the treatment, lipid peroxidation, catalase, superoxide dismutase, glutathione peroxidase and myeloperoxidase activities were measured. Lungs weight and total protein content were determined in the bronchoalveolar fluid (BALF). Cytokines such as macrophage inhibitory factor (MIF), interleukin-8 (IL-8) and tumour necrosis factor-alpha (TNF-α) were determined in the BALF. In addition, the histopathological analysis was also carried out to understand the effect of carnosine in the cellular architecture. Carnosine treatment significantly renormalized the lipid peroxidation and other antioxidant enzymes. IL-β, TNF-α, and MIF were found to be reduced after carnosine treatment. After carnosine treatment, the intensity of sepsis was significantly reduced evidenced by histopathological analysis. In western blot analysis, carnosine treatment causes the upregulation of IκBα together with the downregulation of the expressions of p65 and p-IKKα/β (Ser 180/Ser 181).
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Affiliation(s)
- Chenliang Sun
- Department of Critical Care Medicine, Affiliated Hospital of Nantong University, Nantong, PR China
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