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Hwang TL, Lin JY, Kuo LM, Kumar Dhandabani G, Hsieh PW. Design and synthesis of sirtinol analogs as human neutrophil elastase inhibitors. Bioorg Med Chem Lett 2024; 97:129544. [PMID: 37939864 DOI: 10.1016/j.bmcl.2023.129544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/22/2023] [Accepted: 11/04/2023] [Indexed: 11/10/2023]
Abstract
Human neutrophil elastase (HNE) overexpression has a crucial role in most acute inflammation and alpha1-antitrypsin deficiency syndromes observed in humans, triggering neutrophil invasion and activation of macrophage inflammatory and proteolytic effects, leading to tissue damage. Manipulating HNE level homeostasis could potentially help treat neutrophilic inflammation. Previous studies have shown that sirtinol (1) has a specific influence on HNE and potently attenuates acute lung injury and hepatic injury mediated by lipopolysaccharide or trauma hemorrhage. Therefore, 1 was chosen as the model structure to obtain more potent anti-HNE agents. In the present study, we synthesized a series of sirtinol analogues and determined their inhibitory effects on HNE. Structure-activity relationship (SAR) studies showed that swapping the imine and methyl groups of the sirtinol scaffold with diazene and carboxyl groups, respectively, enhances the HNE inhibiting potency. Compound 29 exhibited the highest potency in the SAR study and showed dual inhibitory effects on HNE and proteinase 3 with IC50 values of 4.91 and 20.69 µM, respectively. Furthermore, 29 was confirmed to have dual impacts on inhibiting O2•- generation and elastase release in cell-based assays with IC50 values of 0.90 and 1.86 µM, respectively. These findings suggest that 29 is a promising candidate for developing HNE inhibitors in the treatment of neutrophilic inflammatory diseases.
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Affiliation(s)
- Tsong-Long Hwang
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou, Taiwan; Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.
| | - Jing-Yi Lin
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Liang-Mou Kuo
- Department of General Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.
| | - Ganesh Kumar Dhandabani
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Pei-Wen Hsieh
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Department of General Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.
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Niu K, Yang L, Song W, Liu Z, Yuan J, Zhang H, Zhang W, Wang J, Tao K. A COMPARATIVE ANALYSIS TO DETERMINE THE OPTIMUM HISTONE DEACETYLASE INHIBITORS AND ADMINISTRATION ROUTE FOR IMPROVING SURVIVAL AND ORGAN INJURY IN RATS AFTER HEMORRHAGIC SHOCK. Shock 2023; 60:75-83. [PMID: 37141162 PMCID: PMC10417212 DOI: 10.1097/shk.0000000000002136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 04/20/2023] [Indexed: 05/05/2023]
Abstract
ABSTRACT Objective: Histone deacetylase inhibitors (HDACIs) have been reported to improve survival in rats with hemorrhagic shock (HS). However, no consensus exists on the most effective HDACIs and their administration routes. We herein aimed to determine the optimal HDACIs and administration route in rats with HS. Methods: Survival analysis: In experiment I, male Sprague-Dawley rats were subjected to HS (mean arterial pressure [MAP] was maintained at 30-40 mm Hg for 20 min), and intravenously injected with the following agents (n = 8 per group): (1) no treatment, (2) vehicle (VEH), (3) entinostat (MS-275), (4) [ N -((6-(Hydroxyamino)-6-oxohexyl)oxy)-3,5-dimethylbenzamide] (LMK-235), (5) tubastatin A, (6) trichostatin A (TSA), and (7) sirtinol. In experiment II, rats were intraperitoneally injected with TSA. Mechanism research: In experiments I and II, rats were observed for 3 h, after which blood samples and liver, heart, and lung tissues were harvested. Results: In experiment I, 75% rats in the VEH group but only 25% rats in the LMK-235 and sirtinol groups died within ≤5 h of treatment, whereas the survival of rats in the MS-275, tubastatin A, and TSA groups was significantly prolonged. MS-275, LMK-235, tubastatin A, and TSA significantly reduced histopathological scores, apoptosis cell numbers, and inflammatory cytokine levels. In experiment II, the survival was longer after i.v. TSA treatment than after i.p. TSA treatment, and the IL-6 levels in the heart were significantly lower in rat who received i.p. TSA treatment than in those who received i.v. TSA treatment. Conclusions: The i.v. effect was superior to the i.p. effect, while nonselective and isoform-specific classes I and IIb HDACIs had similar effects.
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Veith NT, Histing T, Menger MD, Pohlemann T, Tschernig T. Helping prometheus: liver protection in acute hemorrhagic shock. ANNALS OF TRANSLATIONAL MEDICINE 2017; 5:206. [PMID: 28603721 DOI: 10.21037/atm.2017.03.109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Acute hemorrhagic hypovolemic shock is caused by a significant high blood loss and leads to hemodynamic instability. The decrease in intravascular volume results in cellular hypoxia and finally in damage to organs such as the liver and the kidney. The liver plays a decisive role in the development or prevention of multiple organ failure after hemorrhagic shock. Despite the large number of experimental studies, the knowledge of pathophysiological mechanisms in the liver after hemorrhagic shock is incomplete. The aim of this mini review was to provide an overview of the pathophysiological changes in liver function after acute hemorrhagic shock and to address treatment options to improve liver perfusion.
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Affiliation(s)
- Nils T Veith
- Department of Trauma, Hand and Reconstructive Surgery, University of Saarland, D-66421 Homburg/Saar, Germany
| | - Tina Histing
- Department of Trauma, Hand and Reconstructive Surgery, University of Saarland, D-66421 Homburg/Saar, Germany
| | - Michael D Menger
- Institute for Clinical and Experimental Surgery, University of Saarland, D-66421 Homburg/Saar, Germany
| | - Tim Pohlemann
- Department of Trauma, Hand and Reconstructive Surgery, University of Saarland, D-66421 Homburg/Saar, Germany
| | - Thomas Tschernig
- Institute of Anatomy, Saarland University, D-66421 Homburg/Saar, Germany
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Abstract
Casodex (bicalutamide), an androgen receptor antagonist, is used for the treatment of prostate cancer. Recent evidences show that Akt signaling pathway exerts organ-protective effects after injury. The aim of this study was to investigate whether Akt plays any role in the casodex-mediated attenuation of hepatic injury after trauma-hemorrhagic shock. Male Sprague-Dawley rats underwent trauma hemorrhage (mean blood pressure kept at approximately 35-40 mm Hg for 90 min), followed by fluid resuscitation. During resuscitation, a single dose of casodex (5 mg/kg, intravenous) with and without a phosphatidylinositol 3-kinase inhibitor wortmannin (1 mg/kg, intravenous), wortmannin or vehicle was administered. Plasma aspartate aminotransferase and alanine aminotransferase levels and various hepatic parameters were measured at 24 h after resuscitation. One-way analysis of variance and the Tukey test were used for statistical analysis. These results showed that trauma hemorrhage increased hepatic myeloperoxidase activity, interleukin 6 and intercellular adhesion molecule 1 levels, and plasma aspartate aminotransferase and alanine aminotransferase concentrations. In the trauma hemorrhage rats treated with casodex, these parameters were significantly improved. Casodex treatment also increased hepatic phospho-Akt expression compared with vehicle-treated trauma hemorrhaged rats. Coadministration of wortmannin with casodex abolished the casodex-induced advantageous effects on the aforementioned parameters and hepatic injury. Our results suggest that the protective effect of casodex administration on attenuation of hepatic injury after trauma hemorrhage, which is, at least in part, through Akt-dependent pathway.
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Liu FC, Tsai YF, Tsai HI, Yu HP. Anti-Inflammatory and Organ-Protective Effects of Resveratrol in Trauma-Hemorrhagic Injury. Mediators Inflamm 2015; 2015:643763. [PMID: 26273141 PMCID: PMC4529946 DOI: 10.1155/2015/643763] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 12/04/2014] [Indexed: 12/31/2022] Open
Abstract
Resveratrol, a natural polyphenolic compound of grape and red wine, owns potential anti-inflammatory effects, which results in the reduction of cytokines overproduction, the inhibition of neutrophil activity, and the alteration of adhesion molecules expression. Resveratrol also possesses antioxidant, anti-coagulation and anti-aging properties, and it may control of cell cycle and apoptosis. Resveratrol has been shown to reduce organ damage following traumatic and shock-like states. Such protective phenomenon is reported to be implicated in a variety of intracellular signaling pathways including the activation of estrogen receptor, the regulation of the sirtuin 1/nuclear factor-kappa B and mitogen-activated protein kinases/hemeoxygenase-1 pathway, and the mediation of proinflammatory cytokines and reactive oxygen species formation and reaction. In the recent studies, resveratrol attenuates hepatocyte injury and improves cardiac contractility due to reduction of proinflammatory mediator expression and ameliorates hypoxia-induced liver and kidney mitochondrial dysfunction following trauma and hemorrhagic injuries. Moreover, through anti-inflammatory effects and antioxidant properties, the resveratrol is believed to protect organ function in trauma-hemorrhagic injury. In this review, the organ-protective and anti-inflammatory effects of resveratrol in trauma-hemorrhagic injury will be discussed.
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Affiliation(s)
- Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 333, Taiwan
| | - Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 333, Taiwan
| | - Hsin-I Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 333, Taiwan
| | - Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
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Tsai YF, Yu HP, Chang WY, Liu FC, Huang ZC, Hwang TL. Sirtinol inhibits neutrophil elastase activity and attenuates lipopolysaccharide-mediated acute lung injury in mice. Sci Rep 2015; 5:8347. [PMID: 25666548 PMCID: PMC4322352 DOI: 10.1038/srep08347] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 01/15/2015] [Indexed: 01/08/2023] Open
Abstract
Enhanced activity of neutrophil elastase leads to a protease–antiprotease imbalance, and plays an essential pathogenic role in acute lung injury (ALI) and acute respiratory distress syndrome. We assayed the pharmacological effects and mechanisms of the action of sirtinol in human neutrophils, and in neutrophil elastase (HNE)-induced paw edema and lipopolysaccharide (LPS)-mediated ALI in mice. Sirtinol significantly inhibited the activity of HNE from human neutrophils in response to various stimulators. The inhibitory effects on HNE activity were not mediated through protein kinase A, calcium, extracellular-regulated kinase, c-Jun N-terminal kinase, p38 mitogen-activated protein kinase, Akt, or Src family kinases. Analysis of enzymatic activities showed that sirtinol inhibited HNE activity in a concentration-dependent manner. These results demonstrate that sirtinol does not affect neutrophil function and is an HNE inhibitor. In addition, administration of sirtinol significantly inhibited HNE-induced paw edema, and attenuated the myeloperoxidase activity and reduced pulmonary wet/dry weight ratio in the LPS-induced ALI mouse model. Our study indicates that sirtinol has anti-inflammatory effects through direct inhibition of HNE activity and attenuates HNE-induced and LPS-mediated tissue or organ injury in vivo. Sirtinol is a novel HNE inhibitor and may have the potential for clinical application in the treatment of inflammatory lung diseases.
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Affiliation(s)
- Yung-Fong Tsai
- 1] Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Kweishan 333, Taoyuan, Taiwan [2] Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Kweishan 333, Taoyuan, Taiwan [3] Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Huang-Ping Yu
- 1] Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Kweishan 333, Taoyuan, Taiwan [2] Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Wen-Yi Chang
- 1] Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Kweishan 333, Taoyuan, Taiwan [2] Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Kweishan 333, Taoyuan, Taiwan
| | - Fu-Chao Liu
- 1] Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Kweishan 333, Taoyuan, Taiwan [2] Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Zhen-Cheng Huang
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tsong-Long Hwang
- 1] Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Kweishan 333, Taoyuan, Taiwan [2] Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Kweishan 333, Taoyuan, Taiwan
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Hwang TL, Shen HI, Liu FC, Tsai HI, Wu YC, Chang FR, Yu HP. Ursolic acid inhibits superoxide production in activated neutrophils and attenuates trauma-hemorrhage shock-induced organ injury in rats. PLoS One 2014; 9:e111365. [PMID: 25360589 PMCID: PMC4216084 DOI: 10.1371/journal.pone.0111365] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 09/29/2014] [Indexed: 12/12/2022] Open
Abstract
Neutrophil activation is associated with the development of organ injury after trauma-hemorrhagic shock. In the present study, ursolic acid inhibited the superoxide anion generation and elastase release in human neutrophils. Administration of ursolic acid attenuated trauma-hemorrhagic shock-induced hepatic and lung injuries in rats. In addition, administration of ursolic acid attenuated the hepatic malondialdehyde levels and reduced the plasma aspartate aminotransferase and alanine aminotransferase levels after trauma-hemorrhagic shock. In conclusion, ursolic acid, a bioactive natural compound, inhibits superoxide anion generation and elastase release in human neutrophils and ameliorates trauma-hemorrhagic shock-induced organ injury in rats.
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Affiliation(s)
- Tsong-Long Hwang
- Graduate Institute of Natural Products, School of Traditional Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-I Shen
- Graduate Institute of Natural Products, School of Traditional Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-I Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, Taiwan
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
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