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Lim JS, Hong JH, Lee DY, Li X, Lee DE, Choi JU, Lee KY, Kim KH, Cho YC. 6-Pentyl-α-Pyrone from Trichoderma gamsii Exert Antioxidant and Anti-Inflammatory Properties in Lipopolysaccharide-Stimulated Mouse Macrophages. Antioxidants (Basel) 2023; 12:2028. [PMID: 38136148 PMCID: PMC10741142 DOI: 10.3390/antiox12122028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
Filamentous fungi produce several beneficial secondary metabolites, including bioactive compounds, food additives, and biofuels. Trichoderma, which is a teleomorphic Hypocrea that falls under the taxonomic groups Ascomycota and Dikarya, is an extensively studied fungal genus. In an ongoing study that seeks to discover bioactive natural products, we investigated potential bioactive metabolites from the methanolic extract of cultured Trichoderma gamsii. Using liquid chromatography-mass spectrometry (LC-MS), one major compound was isolated and structurally identified as 6-pentyl-α-pyrone (6PP) based on nuclear magnetic resonance data and LC-MS analysis. To determine its antioxidant and anti-inflammatory activity, as well as the underlying mechanisms, we treated lipopolysaccharide (LPS)-stimulated Raw264.7 mouse macrophages with 6PP. We found that 6PP suppresses LPS-induced increase in the levels of nitric oxide, a mediator of oxidative stress and inflammation, and restores LPS-mediated depletion of total glutathione by stabilizing nuclear factor erythroid 2-related factor 2 (Nrf2), an antioxidative factor, and elevating heme oxygenase-1 levels. Furthermore, 6PP inhibited LPS-induced production of proinflammatory cytokines, which are, at least in part, regulated by heme oxygenase-1 (HO-1). 6PP suppressed proinflammatory responses by inhibiting the nuclear localization of nuclear factor kappa B (NF-κB), as well as by dephosphorylating the mitogen-activated protein kinases (MAPKs). These results indicate that 6PP can protect macrophages against oxidative stress and LPS-induced excessive inflammatory responses by activating the Nrf2/HO-1 pathway while inhibiting the proinflammatory, NF-κB, and MAPK pathways.
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Affiliation(s)
- Jae Sung Lim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (J.S.L.); (D.Y.L.); (X.L.)
| | - Joo-Hyun Hong
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea; (J.-H.H.); (D.E.L.)
- Research Laboratories, ILDONG Pharmaceutical Co. Ltd., Hwaseong 18449, Republic of Korea
| | - Da Young Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (J.S.L.); (D.Y.L.); (X.L.)
| | - Xiangying Li
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (J.S.L.); (D.Y.L.); (X.L.)
| | - Da Eun Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea; (J.-H.H.); (D.E.L.)
| | - Jeong Uk Choi
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea;
| | - Kwang Youl Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (J.S.L.); (D.Y.L.); (X.L.)
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea; (J.-H.H.); (D.E.L.)
| | - Young-Chang Cho
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (J.S.L.); (D.Y.L.); (X.L.)
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Gringeri E, Villano G, Brocco S, Polacco M, Calabrese F, Sacerdoti D, Cillo U, Pontisso P. SerpinB3 as hepatic marker of post-resective shear stress. Updates Surg 2023; 75:1541-1548. [PMID: 37204659 PMCID: PMC10435418 DOI: 10.1007/s13304-023-01531-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 05/10/2023] [Indexed: 05/20/2023]
Abstract
Post-resective liver failure is a frequent complication of liver surgery and it is due to portal hyperperfusion of the remnant liver and to arterial vasoconstriction, as buffer response of the hepatic artery. In this context, splenectomy allows a reduction of portal flow and increases the survival chance in preclinical models. SerpinB3 is over-expressed in the liver in oxidative stress conditions, as a mechanism of cell defense to provide survival by apoptosis inhibition and cell proliferation. In this study, the expression of SerpinB3 was assessed as predictor of liver damage in in vivo models of major hepatic resection with or without splenectomy. Wistar male rats were divided into 4 groups: group A received 30% hepatic resection, group B > 60% resection, group C > 60% resection with splenectomy and group D sham-operated. Before and after surgery liver function tests, echo Doppler ultrasound and gene expression were assessed. Transaminase values and ammonium were significantly higher in groups that underwent major hepatic resection. Echo Doppler ultrasound showed the highest portal flow and resistance of the hepatic artery in the group with > 60% hepatectomy without splenectomy, while the association of splenectomy determined no increase in portal flow and hepatic artery resistance. Only the group of rats without splenectomy showed higher shear-stress conditions, reflected by higher levels of HO-1, Nox1 and of Serpinb3, the latter associated with an increase of IL-6. In conclusion, splenectomy controls inflammation and oxidative damage, preventing the expression of Serpinb3. Therefore, SerpinB3 can be considered as a marker of post-resective shear stress.
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Affiliation(s)
- Enrico Gringeri
- Unit of Hepatobiliary Surgery and Liver Transplantation, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
- Department of Surgical, Oncological and Gastroenterological Sciences-DISCOG, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
| | - Gianmarco Villano
- Interdepartmental Center of Experimental Surgery, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
- Department of Surgical, Oncological and Gastroenterological Sciences-DISCOG, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
| | - Silvia Brocco
- Department of Medicine-DIMED, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
| | - Marina Polacco
- Unit of Hepatobiliary Surgery and Liver Transplantation, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
- Department of Surgical, Oncological and Gastroenterological Sciences-DISCOG, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
| | - Fiorella Calabrese
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
| | - David Sacerdoti
- Department of Medicine-DIMED, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
| | - Umberto Cillo
- Unit of Hepatobiliary Surgery and Liver Transplantation, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
- Department of Surgical, Oncological and Gastroenterological Sciences-DISCOG, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
| | - Patrizia Pontisso
- Department of Medicine-DIMED, University of Padova, Via Giustiniani 2, 35128 Padua, Italy
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Premature Macrophage Activation by Stored Red Blood Cell Transfusion Halts Liver Regeneration Post-Partial Hepatectomy in Rats. Cells 2022; 11:cells11213522. [DOI: 10.3390/cells11213522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 11/03/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
Liver resection is a common treatment for various conditions and often requires blood transfusions to compensate for operative blood loss. As partial hepatectomy (PHx) is frequently performed in patients with a pre-damaged liver, avoiding further injury is of paramount clinical importance. Our aim was to study the impact of red blood cell (RBC) resuscitation on liver regeneration. We assessed the impact of RBC storage time on liver regeneration following 50% PHx in rats and explored possible contributing molecular mechanisms using immunohistochemistry, RNA-Seq, and macrophage depletion. The liver was successfully regenerated after PHx when rats were transfused with fresh RBCs (F-RBCs). However, in rats resuscitated with stored RBCs (S-RBCs), the regeneration process was disrupted, as detected by delayed hepatocyte proliferation and lack of hypertrophy. The delayed regeneration was associated with elevated numbers of hemorrhage-activated liver macrophages (Mhem) secreting HO-1. Depletion of macrophages prior to PHx and transfusion improved the regeneration process. Gene expression profiling revealed alterations in numerous genes belonging to critical pathways, including cell cycle and DNA replication, and genes associated with immune cell activation, such as chemokine signaling and platelet activation and adhesion. Our results implicate activated macrophages in delayed liver regeneration following S-RBC transfusion via HO-1 and PAI-1 overexpression.
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Zager RA. Oxidant- induced preconditioning: A pharmacologic approach for triggering renal 'self defense'. Physiol Rep 2022; 10:e15507. [PMID: 36305701 PMCID: PMC9615572 DOI: 10.14814/phy2.15507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 05/07/2023] Open
Abstract
Acute kidney injury (AKI) is a common event, occurring in ~5% and ~35% of hospitalized and ICU patients, respectively. The development of AKI portends an increased risk of morbidity, mortality, prolonged hospitalization, and subsequent development of chronic kidney disease (CKD). Given these facts, a multitude of experimental studies have addressed potential methods for inducing AKI prevention in high-risk patients. However, successful clinical translation of promising experimental data has remained elusive. Over the past decade, our laboratory has focused on developing a method for safely triggering AKI protection by inducing "kidney preconditioning" in mice by the intravenous administration of a combination of Fe sucrose (FeS) + tin protoporphyrin (SnPP). These agents induce mild, but short lived, 'oxidant stress' which synergistically activate a number of kidney 'self-defense' pathways (e.g., Nrf2, ferritin, IL-10). Within 18-24 h of Fe/SnPP administration, marked protection against diverse forms of experimental toxic and ischemic AKI results. FeS/SnPP-mediated reductions in kidney injury can also indirectly decrease injury in other organs by mitigating the so called "organ cross talk" phenomenon. Given these promising experimental data, three phase 1b clinical trials were undertaken in healthy subjects and patients with stage 3 or 4 CKD. These studies demonstrated that FeS/SnPP were well tolerated and that they up-regulated the cytoprotective Nrf2, ferritin, and IL-10 pathways. Two subsequent phase 2 trials, conducted in patients undergoing 'on-pump' cardiovascular surgery or in patients hospitalized with COVID 19, confirmed FeS/SnPP safety. Furthermore, interim data analyses revealed statistically significant improvements in several clinical parameters. The goals of this review are to: (i) briefly discuss the historical background of renal "preconditioning"; (ii) present the experimental data that support the concept of FeS/SnPP- induced organ protection; and (iii) discuss the initial results of clinical trials that suggest the potential clinical utility of an 'oxidant preconditioning' strategy.
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Affiliation(s)
- Richard A. Zager
- Department of MedicineUniversity of WashingtonSeattleWashingtonUSA
- Fred Hutchinson Cancer CenterSeattleWashingtonUSA
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Heme-Oxygenase-1 Attenuates Oxidative Functions of Antigen Presenting Cells and Promotes Regulatory T Cell Differentiation during Fasciola hepatica Infection. Antioxidants (Basel) 2021; 10:antiox10121938. [PMID: 34943041 PMCID: PMC8750899 DOI: 10.3390/antiox10121938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/03/2021] [Accepted: 11/10/2021] [Indexed: 12/19/2022] Open
Abstract
Fasciola hepatica is a fluke that infects livestock and humans causing fasciolosis, a zoonotic disease of increasing importance due to its worldwide distribution and high economic losses. The parasite regulates the host immune system by inducing a strong Th2 and regulatory T (Treg) cell immune response through mechanisms that might involve the expression or activity of heme-oxygenase-1 (HO-1), the rate-limiting enzyme in the catabolism of free heme that also has immunoregulatory and antioxidant properties. In this paper, we show that F. hepatica-infected mice upregulate HO-1 on peritoneal antigen-presenting cells (APC), which produce decreased levels of both reactive oxygen and nitrogen species (ROS/RNS). The presence of these cells was associated with increased levels of regulatory T cells (Tregs). Blocking the IL-10 receptor (IL-10R) during parasite infection demonstrated that the presence of splenic Tregs and peritoneal APC expressing HO-1 were both dependent on IL-10 activity. Furthermore, IL-10R neutralization as well as pharmacological treatment with the HO-1 inhibitor SnPP protected mice from parasite infection and allowed peritoneal APC to produce significantly higher ROS/RNS levels than those detected in cells from infected control mice. Finally, parasite infection carried out in gp91phox knockout mice with inactive NADPH oxidase was associated with decreased levels of peritoneal HO-1+ cells and splenic Tregs, and partially protected mice from the hepatic damage induced by the parasite, revealing the complexity of the molecular mechanisms involving ROS production that participate in the complex pathology induced by this helminth. Altogether, these results contribute to the elucidation of the immunoregulatory and antioxidant role of HO-1 induced by F. hepatica in the host, providing alternative checkpoints that might control fasciolosis.
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Adeleke OA, Fisher L, Moore IN, Nardone GA, Sher A. A Long-Acting Thermoresponsive Injectable Formulation of Tin Protoporphyrin Sustains Antitubercular Efficacy in a Murine Infection Model. ACS Pharmacol Transl Sci 2020; 4:276-287. [PMID: 33615179 PMCID: PMC7887855 DOI: 10.1021/acsptsci.0c00185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 11/29/2022]
Abstract
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Tuberculosis is the leading cause of death from a single infectious agent, ranking
above the human immunodeficiency virus (HIV). Effective treatment using antibiotics is
achievable, but poor patient compliance constitutes a major challenge impeding
successful pharmacotherapeutic outcomes. This is often due to the prolonged treatment
periods required and contributes significantly to the rising incidence of drug
resistance, which is a major cause of tuberculosis mortality. Thus, innovative
interventions capable of encouraging compliance and decreasing lengthy and frequent
dosing are needed. Previously, aqueous tin protoporphyrin IX (SnPPIX), a heme
oxygenase-1 inhibitor, administered as multiple daily intraperitoneal (IP) injections,
showed considerable antitubercular efficacy and treatment shortening capabilities as a
host-directed therapy in infected mice. Since daily IP injection is a clinically
impractical administration approach, this proof-of-concept study aims to develop a
novel, sustained action injectable formulation of SnPPIX for safe intramuscular (IM)
administration. Herein, a SnPPIX-loaded poloxamer-poly(acrylic acid)-based
thermoresponsive injectable formulation (SnPPIX-TIF) is designed for effective IM
delivery. Results show SnPPIX-TIF is microparticulate, syringeable, injectable, and
exhibits complete in vitro/in vivo gelation.
Administered once weekly, SnPPIX-TIF significantly prolonged absorption and
antimicrobial efficacy in infected mice. In addition, SnPPIX-TIF is well-tolerated
in vivo; results from treated animals show no significant
histopathologic alterations and were indistinguishable from the untreated control group,
thus supporting its biocompatibility and preclinical safety. Overall, the IM delivery of
the thermoresponsive injectable formulation safely sustains antitubercular effect in an
infected murine model and decreases the number of injections required, signifying a
potentially practical approach for future clinical translation.
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Affiliation(s)
- Oluwatoyin A Adeleke
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, US Department of Health and Human Services, Bethesda, Maryland 20892, United States.,Division of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Science University, Pretoria 0208, South Africa
| | - Logan Fisher
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, US Department of Health and Human Services, Bethesda, Maryland 20892, United States
| | - Ian N Moore
- Infectious Disease Pathogenesis Section (IDPS), Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, US Department of Health and Human Services, Rockville, Maryland 20852, United States
| | - Glenn A Nardone
- Protein Chemistry Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, US Department of Health and Human Services, Rockville, Maryland 20852, United States
| | - Alan Sher
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, US Department of Health and Human Services, Bethesda, Maryland 20892, United States
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