1
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Zhang T, Zhao F, Hu Y, Wei J, Cui F, Lin Y, Jin Y, Sheng X. Environmental monobutyl phthalate exposure promotes liver cancer via reprogrammed cholesterol metabolism and activation of the IRE1α-XBP1s pathway. Oncogene 2024; 43:2355-2370. [PMID: 38879588 DOI: 10.1038/s41388-024-03086-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 06/05/2024] [Accepted: 06/10/2024] [Indexed: 07/21/2024]
Abstract
Humans are widely exposed to phthalates, a major chemical plasticizer that accumulates in the liver. However, little is known about the impact of chronic phthalate exposure on liver cancer development. In this study, we applied a long-term cell culture model by treating the liver cancer cell HepG2 and normal hepatocyte L02 to environmental dosage of monobutyl phthalate (MBP), the main metabolite of phthalates. Interestingly, we found that long-term MBP exposure significantly accelerated the growth of HepG2 cells in vitro and in vivo, but barely altered the function of L02 cells. MBP exposure triggered reprogramming of lipid metabolism in HepG2 cells, where cholesterol accumulation subsequently activated the IRE1α-XBP1s axis of the unfolded protein response. As a result, the XBP1s-regulated gene sets and pathways contributed to the increased aggressiveness of HepG2 cells. In addition, we also showed that MBP-induced cholesterol accumulation fostered an immunosuppressive microenvironment by promoting tumor-associated macrophage polarization toward the M2 type. Together, these results suggest that environmental phthalates exposure may facilitate liver cancer progression, and alerts phthalates exposure to patients who already harbor liver tumors.
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Affiliation(s)
- Tingting Zhang
- School of Life and Health Sciences, Hainan University, Haikou, 570228, China
- School of Environmental Science and Engineering, Hainan University, Haikou, 570228, China
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Faming Zhao
- School of Life and Health Sciences, Hainan University, Haikou, 570228, China
- School of Environmental Science and Engineering, Hainan University, Haikou, 570228, China
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yanxia Hu
- School of Life and Health Sciences, Hainan University, Haikou, 570228, China
- School of Environmental Science and Engineering, Hainan University, Haikou, 570228, China
| | - Jinlan Wei
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Fengzhen Cui
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Yahang Lin
- Department of Neurology, Wuhan Fourth Hospital, Wuhan, 430033, China
| | - Yang Jin
- Department of Biosciences, University of Oslo, 0371, Oslo, Norway
| | - Xia Sheng
- School of Life and Health Sciences, Hainan University, Haikou, 570228, China.
- School of Environmental Science and Engineering, Hainan University, Haikou, 570228, China.
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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2
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Liu Q, Gu X, Liu X, Gu Y, Zhang H, Yang J, Huang Z. Long-chain fatty acids - The turning point between 'mild' and 'severe' acute pancreatitis. Heliyon 2024; 10:e31296. [PMID: 38828311 PMCID: PMC11140623 DOI: 10.1016/j.heliyon.2024.e31296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 05/14/2024] [Accepted: 05/14/2024] [Indexed: 06/05/2024] Open
Abstract
Acute pancreatitis (AP) is an inflammatory disease characterized by localized pancreatic injury and a systemic inflammatory response. Fatty acids (FAs), produced during the breakdown of triglycerides (TGs) in blood and peripancreatic fat, escalate local pancreatic inflammation to a systemic level by damaging pancreatic acinar cells (PACs) and triggering M1 macrophage polarization. This paper provides a comprehensive analysis of lipases' roles in the onset and progression of AP, as well as the effects of long-chain fatty acids (LCFAs) on the function of pancreatic acinar cells (PACs). Abnormalities in the function of PACs include Ca2+ overload, premature trypsinogen activation, protein kinase C (PKC) expression, endoplasmic reticulum (ER) stress, and mitochondrial and autophagic dysfunction. The study highlights the contribution of long-chain saturated fatty acids (LC-SFAs), especially palmitic acid (PA), to M1 macrophage polarization through the activation of the NLRP3 inflammasome and the NF-κB pathway. Furthermore, we investigated lipid lowering therapy for AP. This review establishes a theoretical foundation for pro-inflammatory mechanisms associated with FAs in AP and facilitating drug development.
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Affiliation(s)
- Qiang Liu
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310058, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou 310058, China
- Hangzhou Hospital & Institute of Digestive Diseases, Hangzhou, Zhejiang 310006, China
| | - Xinyi Gu
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou 310003, China
| | - Xiaodie Liu
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou 310003, China
| | - Ye Gu
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310058, China
| | - Hongchen Zhang
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310058, China
| | - Jianfeng Yang
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310058, China
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou 310058, China
- Hangzhou Hospital & Institute of Digestive Diseases, Hangzhou, Zhejiang 310006, China
| | - Zhicheng Huang
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310058, China
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou 310003, China
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3
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Fan Y, Zhang R, Wang C, Pan M, Geng F, Zhong Y, Su H, Kou Y, Mo X, Lefai E, Han X, Chakravarti A, Guo D. STAT3 activation of SCAP-SREBP-1 signaling upregulates fatty acid synthesis to promote tumor growth. J Biol Chem 2024; 300:107351. [PMID: 38718868 PMCID: PMC11176798 DOI: 10.1016/j.jbc.2024.107351] [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: 01/27/2024] [Revised: 04/23/2024] [Accepted: 04/30/2024] [Indexed: 06/04/2024] Open
Abstract
SCAP plays a central role in controlling lipid homeostasis by activating SREBP-1, a master transcription factor in controlling fatty acid (FA) synthesis. However, how SCAP expression is regulated in human cancer cells remains unknown. Here, we revealed that STAT3 binds to the promoter of SCAP to activate its expression across multiple cancer cell types. Moreover, we identified that STAT3 also concurrently interacts with the promoter of SREBF1 gene (encoding SREBP-1), amplifying its expression. This dual action by STAT3 collaboratively heightens FA synthesis. Pharmacological inhibition of STAT3 significantly reduces the levels of unsaturated FAs and phospholipids bearing unsaturated FA chains by reducing the SCAP-SREBP-1 signaling axis and its downstream effector SCD1. Examination of clinical samples from patients with glioblastoma, the most lethal brain tumor, demonstrates a substantial co-expression of STAT3, SCAP, SREBP-1, and SCD1. These findings unveil STAT3 directly regulates the expression of SCAP and SREBP-1 to promote FA synthesis, ultimately fueling tumor progression.
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Affiliation(s)
- Yunzhou Fan
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA; Center for Cancer Metabolism, James Comprehensive Cancer Center at The Ohio State University, Columbus, Ohio, USA
| | - Rui Zhang
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA
| | - Chao Wang
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA
| | - Meixia Pan
- Barshop Institute for Longevity and Aging Studies, and Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Feng Geng
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA; Center for Cancer Metabolism, James Comprehensive Cancer Center at The Ohio State University, Columbus, Ohio, USA
| | - Yaogang Zhong
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA; Center for Cancer Metabolism, James Comprehensive Cancer Center at The Ohio State University, Columbus, Ohio, USA
| | - Huali Su
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA; Center for Cancer Metabolism, James Comprehensive Cancer Center at The Ohio State University, Columbus, Ohio, USA
| | - Yongjun Kou
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA; Center for Cancer Metabolism, James Comprehensive Cancer Center at The Ohio State University, Columbus, Ohio, USA
| | - Xiaokui Mo
- Biostatistic Center and Department of Bioinformatics, College of Medicine at The Ohio State University, Columbus, Ohio, USA
| | - Etienne Lefai
- Human Nutrition Unit, French National Research Institute for Agriculture, Food and Environment, University Clermont Auvergne, Clermont-Ferrand, France
| | - Xianlin Han
- Barshop Institute for Longevity and Aging Studies, and Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Arnab Chakravarti
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA
| | - Deliang Guo
- Department of Radiation Oncology, Ohio State Comprehensive Cancer Center, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, and College of Medicine at The Ohio State University, Columbus, Ohio, USA; Center for Cancer Metabolism, James Comprehensive Cancer Center at The Ohio State University, Columbus, Ohio, USA.
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4
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Horwitz A, Birk R. Irisin Ameliorate Acute Pancreatitis and Acinar Cell Viability through Modulation of the Unfolded Protein Response (UPR) and PPARγ-PGC1α-FNDC5 Pathways. Biomolecules 2024; 14:643. [PMID: 38927047 PMCID: PMC11201894 DOI: 10.3390/biom14060643] [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: 04/11/2024] [Revised: 05/22/2024] [Accepted: 05/29/2024] [Indexed: 06/28/2024] Open
Abstract
Acute pancreatitis (AP) entails pancreatic inflammation, tissue damage and dysregulated enzyme secretion, including pancreatic lipase (PL). The role of irisin, an anti-inflammatory and anti-apoptotic cytokine, in AP and exocrine pancreatic stress is unclear. We have previously shown that irisin regulates PL through the PPARγ-PGC1α-FNDC5 pathway. In this study, we investigated irisin and irisin's pathway on AP in in vitro (AR42J-B13) and ex vivo (rat primary acinar) models using molecular, biochemical and immunohistochemistry methodology. Pancreatitis induction (cerulein (cer)) resulted in a significant up-regulation of the PPARγ-PGC1α-FNDC5 axis, PL expression and secretion and endoplasmic reticulum (ER) stress unfolded protein response (UPR) signal-transduction markers (CHOP, XBP-1 and ATF6). Irisin addition in the cer-pancreatitis state resulted in a significant down-regulation of the PPARγ-PGC1α-FNDC5 axis, PPARγ nucleus-translocation and inflammatory state (TNFα and IL-6) in parallel to diminished PL expression and secretion (in vitro and ex vivo models). Irisin addition up-regulated the expression of pro-survival UPR markers (ATF6 and XBP-1) and reduced UPR pro-apoptotic markers (CHOP) under cer-pancreatitis and induced ER stress (tunicamycin), consequently increasing cells viability. Irisin's pro-survival effect under cer-pancreatitis state was abolished under PPARγ inhibition. Our findings suggest irisin as a potential therapeutic option for AP via its ability to up-regulate pro-survival UPR signals and activate the PPARγ-PGC1α-FNDC5 pathway.
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Affiliation(s)
| | - Ruth Birk
- Nutrition Department, Faculty of Health Sciences, Ariel University, Ariel 40700, Israel;
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5
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Liu H, Yao M, Ren J. Codonopsis pilosula-derived glycopeptide dCP1 promotes the polarization of tumor-associated macrophage from M2-like to M1 phenotype. Cancer Immunol Immunother 2024; 73:128. [PMID: 38743074 PMCID: PMC11093951 DOI: 10.1007/s00262-024-03694-6] [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: 07/21/2023] [Accepted: 03/28/2024] [Indexed: 05/16/2024]
Abstract
The majority of the immune cell population in the tumor microenvironment (TME) consists of tumor-associated macrophages (TAM), which are the main players in coordinating tumor-associated inflammation. TAM has a high plasticity and is divided into two main phenotypes, pro-inflammatory M1 type and anti-inflammatory M2 type, with tumor-suppressive and tumor-promoting functions, respectively. Considering the beneficial effects of M1 macrophages for anti-tumor and the high plasticity of macrophages, the conversion of M2 TAM to M1 TAM is feasible and positive for tumor treatment. This study sought to evaluate whether the glycopeptide derived from simulated digested Codonopsis pilosula extracts could regulate the polarization of M2-like TAM toward the M1 phenotype and the potential regulatory mechanisms. The results showed that after glycopeptide dCP1 treatment, the mRNA relative expression levels of some M2 phenotype marker genes in M2-like TAM in simulated TME were reduced, and the relative expression levels of M1 phenotype marker genes and inflammatory factor genes were increased. Analysis of RNA-Seq of M2-like TAM after glycopeptide dCP1 intervention showed that the gene sets such as glycolysis, which is associated with macrophage polarization in the M1 phenotype, were significantly up-regulated, whereas those of gene sets such as IL-6-JAK-STAT3 pathway, which is associated with polarization in the M2 phenotype, were significantly down-regulated. Moreover, PCA analysis and Pearson's correlation also indicated that M2-like TAM polarized toward the M1 phenotype at the transcriptional level after treatment with the glycopeptide dCP1. Lipid metabolomics was used to further explore the efficacy of the glycopeptide dCP1 in regulating the polarization of M2-like TAM to the M1 phenotype. It was found that the lipid metabolite profiles in dCP1-treated M2-like TAM showed M1 phenotype macrophage lipid metabolism profiles compared with blank M2-like TAM. Analysis of the key differential lipid metabolites revealed that the interconversion between phosphatidylcholine (PC) and diacylglycerol (DG) metabolites may be the central reaction of the glycopeptide dCP1 in regulating the conversion of M2-like TAM to the M1 phenotype. The above results suggest that the glycopeptide dCP1 has the efficacy to regulate the polarization of M2-like TAM to M1 phenotype in simulated TME.
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Affiliation(s)
- Hongxu Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, Guangdong, People's Republic of China
| | - Maojin Yao
- State Key Laboratory of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, People's Republic of China.
| | - Jiaoyan Ren
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, Guangdong, People's Republic of China.
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6
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Gumpper-Fedus K, Crowe O, Hart PA, Pita-Grisanti V, Velez-Bonet E, Belury MA, L Ramsey M, Cole RM, Badi N, Culp S, Hinton A, F Lara L, Krishna SG, Conwell DL, Cruz-Monserrate Z. Differences in Plasma Fatty Acid Composition Related to Chronic Pancreatitis: A Pilot Study. Pancreas 2024; 53:e416-e423. [PMID: 38530954 PMCID: PMC11087201 DOI: 10.1097/mpa.0000000000002318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
OBJECTIVES Chronic pancreatitis (CP) is an inflammatory disease affecting the absorption of fat-soluble nutrients. Signaling in pancreatic cells that lead to inflammation may be influenced by fatty acids (FAs) through diet and de novo lipogenesis. Here, we investigated the relationship between plasma FA composition in CP with heterogeneity of etiology and complications of CP. MATERIALS AND METHODS Blood and clinical parameters were collected from subjects with CP (n = 47) and controls (n = 22). Plasma was analyzed for FA composition using gas chromatography and compared between controls and CP and within CP. RESULTS Palmitic acid increased, and linoleic acid decreased in CP compared with controls. Correlations between age or body mass index and FAs are altered in CP compared with controls. Diabetes, pancreatic calcifications, and substance usage, but not exocrine pancreatic dysfunction, were associated with differences in oleic acid and linoleic acid relative abundance in CP. De novo lipogenesis index was increased in the plasma of subjects with CP compared with controls and in calcific CP compared with noncalcific CP. CONCLUSIONS Fatty acids that are markers of de novo lipogenesis and linoleic acid are dysregulated in CP depending on the etiology or complication. These results enhance our understanding of CP and highlight potential pathways targeting FAs for treating CP.
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Affiliation(s)
| | | | | | | | | | - Martha A Belury
- Department of Food Science and Technology, College of Food, Agriculture, and Environmental Sciences, The Ohio State University
| | - Mitchell L Ramsey
- From the Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine
| | - Rachel M Cole
- Department of Food Science and Technology, College of Food, Agriculture, and Environmental Sciences, The Ohio State University
| | | | | | - Alice Hinton
- Division of Biostatistics, College of Public Heath, The Ohio State University Wexner Medical Center, Columbus
| | - Luis F Lara
- Department of Internal Medicine, Division of Digestive Diseases, University of Cincinnati College of Medicine, Cincinnati, OH
| | | | - Darwin L Conwell
- Department of Internal Medicine, University of Kentucky College of Medicine, Lexington, KY
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7
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Qiu M, Zhou X, Zippi M, Goyal H, Basharat Z, Jagielski M, Hong W. Comprehensive review on the pathogenesis of hypertriglyceridaemia-associated acute pancreatitis. Ann Med 2023; 55:2265939. [PMID: 37813108 PMCID: PMC10563627 DOI: 10.1080/07853890.2023.2265939] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023] Open
Abstract
It is well known, that the inflammatory process that characterizes acute pancreatitis (AP) can lead to both pancreatic damage and systemic inflammatory response syndrome (SIRS). During the last 20 years, there has been a growing incidence of episodes of acute pancreatitis associated with hypertriglyceridaemia (HTAP). This review provides an overview of triglyceride metabolism and the potential mechanisms that may contribute to developing or exacerbating HTAP. The article comprehensively discusses the various pathological roles of free fatty acid, inflammatory response mechanisms, the involvement of microcirculation, serum calcium overload, oxidative stress and the endoplasmic reticulum, genetic polymorphism, and gut microbiota, which are known to trigger or escalate this condition. Future perspectives on HTAP appear promising, with ongoing research focused on developing more specific and effective treatment strategies.
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Affiliation(s)
- Minhao Qiu
- Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
| | - Xiaoying Zhou
- Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
| | - Maddalena Zippi
- Unit of Gastroenterology and Digestive Endoscopy, Sandro Pertini Hospital, Rome, Italy
| | - Hemant Goyal
- Department of Surgery, University of TX Health Sciences Center, Houston, TX, United States
| | | | - Mateusz Jagielski
- Department of General, Gastroenterological and Oncological Surgery, Nicolaus Copernicus University in Toruń, Poland
| | - Wandong Hong
- Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
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8
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Liu Z, Yuan J, Wen P, Guo X, Wen H, Guo Y, Li D. Effect of lard plus soybean oil on blood pressure and other cardiometabolic risk factors in healthy subjects: a randomized controlled-feeding trial. Food Funct 2023; 14:7117-7129. [PMID: 37461334 DOI: 10.1039/d3fo01765f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Lard has been consumed by humans for thousands of years, but its consumption has declined substantially in the last few decades, because of negative publicity about the consumption of animal-derived saturated fats. Emerging evidence highlights that lard plus soybean oil (blend oil) could be more beneficial for body weight and liver function than the individual use of the two oils. This study aimed to evaluate the effects of blend oil on cardiometabolic risk factors in healthy subjects. This was a parallel, three-arm, randomized controlled-feeding trial. 334 healthy subjects (mean age: 33.1 years, 60% women) were randomized into three isoenergetic diet groups with three different edible oils (30 g day-1) (soybean oil, lard, and blend oil [50% lard and 50% soybean oil]) for 12 weeks. 245 (73.4%) participants completed the study. After the 12-week intervention, reductions in both systolic blood pressure (SBP) and diastolic blood pressure (DBP) were greater in the blend oil group than in the other two groups (P = 0.023 and 0.008 for the interaction between the diet group and time, respectively). Reductions of SBP and DBP in the blend oil group were more significant than those in the soybean oil group with P = 0.008 and P = 0.026 and the lard group with P < 0.001 and P < 0.001. Changes in SBP/DBP at 12 weeks were -6.0 (95% CI: -8.6 to -3.4)/0.8 (95% CI: -1.7 to 3.2) mmHg in the blend oil group, -3.3 (95% CI: -5.7 to -0.9)/1.5 (95% CI: -1.0 to 4.0) mmHg in the soybean oil group and -1.2 (95% CI: -3.7 to 1.4)/3.3 (95% CI: 0.9 to 5.8) mmHg in the lard group. Subgroup analyses showed that blend oil significantly decreased SBP and DBP compared with the other two groups in participants with BP ≥ 130/80 mmHg and body mass index ≥25. There were no significant differences in the changes in body weight, waist circumference, serum lipids, or glucose between groups. In conclusion, our findings suggest that blend oil (lard plus soybean oil) reduces BP compared with soybean oil and lard in healthy subjects.
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Affiliation(s)
- Zhiyuan Liu
- Institute of Nutrition & Health, Qingdao University, Qingdao, China.
| | - Jihong Yuan
- Department of Nutrition, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Ping Wen
- Supply Department, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Xiaofei Guo
- Institute of Nutrition & Health, Qingdao University, Qingdao, China.
| | - Haichao Wen
- Institute of Nutrition & Health, Qingdao University, Qingdao, China.
| | - Yanjun Guo
- Institute of Nutrition & Health, Qingdao University, Qingdao, China.
| | - Duo Li
- Institute of Nutrition & Health, Qingdao University, Qingdao, China.
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, China
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, Australia
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9
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Pratelli G, Di Liberto D, Carlisi D, Emanuele S, Giuliano M, Notaro A, De Blasio A, Calvaruso G, D’Anneo A, Lauricella M. Hypertrophy and ER Stress Induced by Palmitate Are Counteracted by Mango Peel and Seed Extracts in 3T3-L1 Adipocytes. Int J Mol Sci 2023; 24:ijms24065419. [PMID: 36982490 PMCID: PMC10048994 DOI: 10.3390/ijms24065419] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/18/2023] Open
Abstract
A diet rich in saturated fatty acids (FAs) has been correlated with metabolic dysfunction and ROS increase in the adipose tissue of obese subjects. Thus, reducing hypertrophy and oxidative stress in adipose tissue can represent a strategy to counteract obesity and obesity-related diseases. In this context, the present study showed how the peel and seed extracts of mango (Mangifera indica L.) reduced lipotoxicity induced by high doses of sodium palmitate (PA) in differentiated 3T3-L1 adipocytes. Mango peel (MPE) and mango seed (MSE) extracts significantly lowered PA-induced fat accumulation by reducing lipid droplet (LDs) and triacylglycerol (TAGs) content in adipocytes. We showed that MPE and MSE activated hormone-sensitive lipase, the key enzyme of TAG degradation. In addition, mango extracts down-regulated the adipogenic transcription factor PPARγ as well as activated AMPK with the consequent inhibition of acetyl-CoA-carboxylase (ACC). Notably, PA increased endoplasmic reticulum (ER) stress markers GRP78, PERK and CHOP, as well as enhanced the reactive oxygen species (ROS) content in adipocytes. These effects were accompanied by a reduction in cell viability and the induction of apoptosis. Interestingly, MPE and MSE counteracted PA-induced lipotoxicity by reducing ER stress markers and ROS production. In addition, MPE and MSE increased the level of the anti-oxidant transcription factor Nrf2 and its targets MnSOD and HO-1. Collectively, these results suggest that the intake of mango extract-enriched foods in association with a correct lifestyle could exert beneficial effects to counteract obesity.
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Affiliation(s)
- Giovanni Pratelli
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Diana Di Liberto
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Daniela Carlisi
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Sonia Emanuele
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Michela Giuliano
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Antonietta Notaro
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Anna De Blasio
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Giuseppe Calvaruso
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Antonella D’Anneo
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Marianna Lauricella
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
- Correspondence: ; Tel.: +39-09123865854
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10
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Kiss L, Fűr G, Pisipati S, Rajalingamgari P, Ewald N, Singh V, Rakonczay Z. Mechanisms linking hypertriglyceridemia to acute pancreatitis. Acta Physiol (Oxf) 2023; 237:e13916. [PMID: 36599412 DOI: 10.1111/apha.13916] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 11/25/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023]
Abstract
Hypertriglyceridemia (HTG) is a metabolic disorder, defined when serum or plasma triglyceride concentration (seTG) is >1.7 mM. HTG can be categorized as mild to very severe groups based on the seTG value. The risk of acute pancreatitis (AP), a serious disease with high mortality and without specific therapy, increases with the degree of HTG. Furthermore, even mild or moderate HTG aggravates AP initiated by other important etiological factors, including alcohol or bile stone. This review briefly summarizes the pathophysiology of HTG, the epidemiology of HTG-induced AP and the clinically observed effects of HTG on the outcomes of AP. Our main focus is to discuss the pathophysiological mechanisms linking HTG to AP. HTG is accompanied by an increased serum fatty acid (FA) concentration, and experimental results have demonstrated that these FAs have the most prominent role in causing the consequences of HTG during AP. FAs inhibit mitochondrial complexes in pancreatic acinar cells, induce pathological elevation of intracellular Ca2+ concentration, cytokine release and tissue injury, and reduce the function of pancreatic ducts. Furthermore, high FA concentrations can induce respiratory, kidney, and cardiovascular failure in AP. All these effects may contribute to the observed increased AP severity and frequent organ failure in patients. Importantly, experimental results suggest that the reduction of FA production by lipase inhibitors can open up new therapeutic options of AP. Overall, investigating the pathophysiology of HTG-induced AP or AP in the presence of HTG and determining possible treatments are needed.
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Affiliation(s)
- Lóránd Kiss
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Gabriella Fűr
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Sailaja Pisipati
- Department of Medicine, Mayo Clinic, Scottsdale, Arizona, USA.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Scottsdale, Arizona, USA
| | - Prasad Rajalingamgari
- Department of Medicine, Mayo Clinic, Scottsdale, Arizona, USA.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Scottsdale, Arizona, USA
| | - Nils Ewald
- Institute for Endocrinology, Diabetology and Metabolism, University Hospital Minden, Minden, Germany.,Justus-Liebig-Universität Giessen, Giessen, Germany
| | - Vijay Singh
- Department of Medicine, Mayo Clinic, Scottsdale, Arizona, USA.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Scottsdale, Arizona, USA
| | - Zoltán Rakonczay
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
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11
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Mooradian AD, Haas MJ. Endoplasmic reticulum stress: A common pharmacologic target of cardioprotective drugs. Eur J Pharmacol 2022; 931:175221. [PMID: 35998751 DOI: 10.1016/j.ejphar.2022.175221] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/10/2022] [Accepted: 08/15/2022] [Indexed: 11/03/2022]
Abstract
Despite the advances made in cardiovascular disease prevention, there is still substantial residual risk of adverse cardiovascular events. Contemporary evidence suggests that additional reduction in cardiovascular disease risk can be achieved through amelioration of cellular stresses, notably inflammatory stress and endoplasmic reticulum (ER) stress. Only two clinical trials with anti-inflammatory agents have supported the role of inflammatory stress in cardiovascular risk. However, there are no clinical trials with selective ER stress modifiers to test the hypothesis that reducing ER stress can reduce cardiovascular disease. Nevertheless, the ER stress hypothesis is supported by recent pharmacologic studies revealing that currently available cardioprotective drugs share a common property of reducing ER stress. These drug classes include angiotensin converting enzyme inhibitors, angiotensin II receptor blockers, mineralocorticoid receptor blockers, β-adrenergic receptor blockers, statins, and select antiglycemic agents namely, metformin, glucagon like peptide 1 receptor agonists and sodium glucose cotransporter 2 inhibitors. Although these drugs ameliorate common risk factors for cardiovascular disease, such as hypertension, hypercholesterolemia and hyperglycemia, their cardioprotective effects may be partially independent of their principal effects on cardiovascular risk factors. Clinical trials with selective ER stress modifiers are needed to test the hypothesis that reducing ER stress can reduce cardiovascular disease.
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Affiliation(s)
- Arshag D Mooradian
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida College of Medicine, Jacksonville, FL, USA.
| | - Michael J Haas
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida College of Medicine, Jacksonville, FL, USA
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12
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Oleic Acid and Palmitic Acid from Bacteroides thetaiotaomicron and Lactobacillus johnsonii Exhibit Anti-Inflammatory and Antifungal Properties. Microorganisms 2022; 10:microorganisms10091803. [PMID: 36144406 PMCID: PMC9504516 DOI: 10.3390/microorganisms10091803] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 11/21/2022] Open
Abstract
A decrease in populations of Bacteroides thetaiotaomicron and Lactobacillus johnsonii is observed during the development of colitis and fungal overgrowth, while restoration of these populations reduces inflammatory parameters and fungal overgrowth in mice. This study investigated the effect of two fatty acids from B. thetaiotaomicron and L. johnsonii on macrophages and Caco-2 cells, as well as their impact on the inflammatory immune response and on Candida glabrata overgrowth in a murine model of dextran sulfate sodium (DSS)-induced colitis. Oleic acid (OA) and palmitic acid (PA) from L. johnsonii and B. thetaiotaomicron were detected during their interaction with epithelial cells from colon samples. OA alone or OA combined with PA (FAs) reduced the expression of proinflammatory mediators in intestinal epithelial Caco-2 cells challenged with DSS. OA alone or FAs increased FFAR1, FFAR2, AMPK, and IL-10 expression in macrophages. Additionally, OA alone or FAs decreased COX-2, TNFα, IL-6, and IL-12 expression in LPS-stimulated macrophages. In the DSS murine model, oral administration of FAs reduced inflammatory parameters, decreased Escherichia coli and Enterococcus faecalis populations, and eliminated C. glabrata from the gut. Overall, these findings provide evidence that OA combined with PA exhibits anti-inflammatory and antifungal properties.
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13
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Barros G, Duran P, Vera I, Bermúdez V. Exploring the Links between Obesity and Psoriasis: A Comprehensive Review. Int J Mol Sci 2022; 23:ijms23147499. [PMID: 35886846 PMCID: PMC9321445 DOI: 10.3390/ijms23147499] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022] Open
Abstract
Obesity is a major public health issue worldwide since it is associated with the development of chronic comorbidities such as type 2 diabetes, dyslipidemias, atherosclerosis, some cancer forms and skin diseases, including psoriasis. Scientific evidence has indicated that the possible link between obesity and psoriasis may be multifactorial, highlighting dietary habits, lifestyle, certain genetic factors and the microbiome as leading factors in the progress of both pathologies because they are associated with a chronic pro-inflammatory state. Thus, inflammation management in obesity is a plausible target for psoriasis, not only because of the sick adipose tissue secretome profile but also due to the relationship of obesity with the rest of the immune derangements associated with psoriasis initiation and maintenance. Hence, this review will provide a general and molecular overview of the relationship between both pathologies and present recent therapeutic advances in treating this problem.
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Affiliation(s)
- Gabriela Barros
- Departamento de Post-Grado, Universidad Católica de Cuenca, Ciudad Cuenca 010109, Ecuador;
| | - Pablo Duran
- Endocrine and Metabolic Diseases Research Center, School of Medicine, The University of Zulia, Maracaibo 4004, Venezuela; (P.D.); (I.V.)
| | - Ivana Vera
- Endocrine and Metabolic Diseases Research Center, School of Medicine, The University of Zulia, Maracaibo 4004, Venezuela; (P.D.); (I.V.)
| | - Valmore Bermúdez
- Departamento de Post-Grado, Universidad Católica de Cuenca, Ciudad Cuenca 010109, Ecuador;
- Facultad de Ciencias de la Salud, Universidad Simón Bolívar, Barranquilla 080002, Colombia
- Correspondence:
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14
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Hinzman CP, Singh B, Bansal S, Li Y, Iliuk A, Girgis M, Herremans KM, Trevino JG, Singh VK, Banerjee PP, Cheema AK. A multi-omics approach identifies pancreatic cancer cell extracellular vesicles as mediators of the unfolded protein response in normal pancreatic epithelial cells. J Extracell Vesicles 2022; 11:e12232. [PMID: 35656858 PMCID: PMC9164146 DOI: 10.1002/jev2.12232] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 03/22/2022] [Accepted: 04/30/2022] [Indexed: 02/06/2023] Open
Abstract
Although cancer-derived extracellular vesicles (cEVs) are thought to play a pivotal role in promoting cancer progression events, their precise effect on neighbouring normal cells is unknown. In this study, we investigated the impact of pancreatic cancer ductal adenocarcinoma (PDAC) derived EVs on recipient non-tumourigenic pancreatic normal epithelial cells upon internalization. We demonstrate that cEVs are readily internalized and induce endoplasmic reticulum (ER) stress and the unfolded protein response (UPR) in treated normal pancreatic epithelial cells within 24 h. We further show that PDAC cEVs increase cell proliferation, migration, and invasion and that these changes are regulated at least in part, by the UPR mediator DDIT3. Subsequently, these cells release several inflammatory cytokines. Leveraging a layered multi-omics approach, we analysed EV cargo from a panel of six PDAC and two normal pancreas cell lines, using multiple EV isolation methods. We found that cEVs were enriched for an array of biomolecules which can induce or regulate ER stress and the UPR, including palmitic acid, sphingomyelins, metabolic regulators of tRNA charging and proteins which regulate trafficking and degradation. We further show that palmitic acid, at doses relevant to those found in cEVs, is sufficient to induce ER stress in normal pancreas cells. These results suggest that cEV cargo packaging may be designed to disseminate proliferative and invasive characteristics upon internalization by distant recipient normal cells, hitherto unreported. This study is among the first to highlight a major role for PDAC cEVs to induce stress in treated normal pancreas cells that may modulate a systemic response leading to altered phenotypes. These findings highlight the importance of EVs in mediating disease aetiology and open potential areas of investigation toward understanding the role of cEV lipids in promoting cell transformation in the surrounding microenvironment.
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Affiliation(s)
- Charles P. Hinzman
- Department of BiochemistryMolecular and Cellular BiologyGeorgetown University Medical CentreWashingtonDCUSA
| | - Baldev Singh
- Department of OncologyLombardi Comprehensive Cancer CenterGeorgetown University Medical CentreWashingtonDCUSA
| | - Shivani Bansal
- Department of OncologyLombardi Comprehensive Cancer CenterGeorgetown University Medical CentreWashingtonDCUSA
| | - Yaoxiang Li
- Department of OncologyLombardi Comprehensive Cancer CenterGeorgetown University Medical CentreWashingtonDCUSA
| | - Anton Iliuk
- Tymora Analytical OperationsWest LafayetteINUSA
| | - Michael Girgis
- Department of OncologyLombardi Comprehensive Cancer CenterGeorgetown University Medical CentreWashingtonDCUSA
| | | | - Jose G. Trevino
- Division of Surgical OncologyVCU Massey Cancer CentreRichmondVAUSA
| | - Vijay K. Singh
- Department of Pharmacology and Molecular TherapeuticsSchool of MedicineUniformed Services University of the Health SciencesBethesdaMDUSA
- Armed Forces Radiobiology Research InstituteUniformed Services University of the Health SciencesBethesdaMDUSA
| | - Partha P. Banerjee
- Department of BiochemistryMolecular and Cellular BiologyGeorgetown University Medical CentreWashingtonDCUSA
| | - Amrita K. Cheema
- Department of BiochemistryMolecular and Cellular BiologyGeorgetown University Medical CentreWashingtonDCUSA
- Department of OncologyLombardi Comprehensive Cancer CenterGeorgetown University Medical CentreWashingtonDCUSA
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15
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Smvk P, Kommu S, Yadav D, Kondeti S, Kalashikam RR, Natarajan S. Effect of different dietary fats on inflammation and glucose intolerance in high fructose and high fat fed experimental animals. Horm Mol Biol Clin Investig 2022; 43:307-314. [DOI: 10.1515/hmbci-2021-0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 03/12/2022] [Indexed: 11/15/2022]
Abstract
Abstract
Objectives
Diet is the major modifiable risk factor for the onset of insulin resistance and its progression into diabetes. In the present study the effect of various dietary fats on inflammatory homeostasis and glucose tolerance is investigated in high fat and high fructose fed mice model.
Methods
C57/BL6J mice were divided into four groups and fed a casein-based diet containing high fructose (45%) and high fat (24%) (clarified butter oil [CBO]; safflower oil [SFFO] and lard oil [LO]) for 120 days; oral glucose tolerance (OGTT), plasma lipid profile and plasma & adipose tissue cytokines levels were compared with the control diet (10% groundnut oil and 59.5% starch) fed animals.
Results
The total cholesterol and triglycerides were higher in CBO and LO fed animals with glucose intolerance and increased body weights; liver and white adipose tissue weights were higher in CBO and LO fed animals respectively. CBO feeding increased the plasma (IFN-γ) and adipose tissue cytokines (IFN-γ, IL-10, IL-6 & TNF-α). LO feeding increased plasma IFN-γ, TNF-α and IL-1β and adipose tissue IL-6. SFFO feeding decreased body weight and tissue cytokines and increased plasma IFN-γ levels without causing impairment in the glucose tolerance.
Conclusions
Consumption of a high fructose and high fat diet which mimic the present-day dietary pattern resulted in altered inflammatory homeostasis and impairment in glucose tolerance in 24% CBO and LO fed animals. The deleterious effects of high fructose feeding were reversed in SFFO fed mice possibly due to the presence of oleic and linoleic acids.
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Affiliation(s)
- Prasad Smvk
- Laboratory of Molecular Genetics, Animal Facility , ICMR-National Institute of Nutrition , Hyderabad , India
| | - Srinivasulu Kommu
- Laboratory of Molecular Genetics, Animal Facility , ICMR-National Institute of Nutrition , Hyderabad , India
| | - Dinesh Yadav
- Laboratory of Molecular Genetics, Animal Facility , ICMR-National Institute of Nutrition , Hyderabad , India
| | - Suresh Kondeti
- Laboratory of Molecular Genetics, Animal Facility , ICMR-National Institute of Nutrition , Hyderabad , India
| | - Rajender Rao Kalashikam
- Laboratory of Molecular Genetics, Animal Facility , ICMR-National Institute of Nutrition , Hyderabad , India
| | - Saravanan Natarajan
- Department of Biochemistry , ICMR-National Institute for Research in Tuberculosis , Chennai , India
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16
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Vilharva KN, Leite DF, dos Santos HF, Antunes KÁ, da Rocha PDS, Campos JF, Almeida CV, Macedo MLR, Silva DB, Ramalho de Oliveira CF, dos Santos EL, de Picoli Souza K. Rhynchophorus palmarum (Linnaeus, 1758) (Coleoptera: Curculionidae): Guarani-Kaiowá indigenous knowledge and pharmacological activities. PLoS One 2021; 16:e0249919. [PMID: 33914744 PMCID: PMC8084164 DOI: 10.1371/journal.pone.0249919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/28/2021] [Indexed: 01/22/2023] Open
Abstract
Zootherapy is a traditional secular practice among the Guarani-Kaiowá indigenous ethnic group living in Mato Grosso do Sul, Brazil. My people use the oil extracted from larvae of the snout beetle Rhynchophorus palmarum (Linnaeus, 1758) to treat and heal skin wounds and respiratory diseases. Based on this ethnopharmacological knowledge, the chemical composition and antioxidant, antimicrobial, and healing properties of R. palmarum larvae oil (RPLO) were investigated, as well as possible toxic effects, through in vitro and in vivo assays. The chemical composition of the RPLO was determined using gas chromatography coupled with mass spectrometry. The antioxidant activity of RPLO was investigated through the direct 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay, and the antimicrobial activity was evaluated against Gram-positive and Gram-negative bacteria that are pathogenic to humans. The healing properties of RPLO were investigated by performing a cell migration assay using human lung fibroblasts (MRC-5), and the toxicity was analyzed, in vivo, using a Caenorhabditis elegans model and MRC-5 cells, in vitro. RPLO contains 52.2% saturated fatty acids and 47.4% unsaturated fatty acids, with palmitic acid (42.7%) and oleic acid (40%) representing its major components, respectively. RPLO possesses direct antioxidant activity, with a half-maximal inhibitory concentration (IC50) of 46.15 mg.ml-1. The antimicrobial activity of RPLO was not observed at a concentration of 1% (v/v). RPLO did not alter the viability of MRC-5 cells and did not exert toxic effects on C. elegans. Furthermore, MRC-5 cells incubated with 0.5% RPLO showed a higher rate of cell migration than that of the control group, supporting its healing properties. Taken together, RPLO possesses direct antioxidant activity and the potential to aid in the healing process and is not toxic toward in vitro and in vivo models, corroborating the safe use of the oil in traditional Guarani-Kaiowá medicine.
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Affiliation(s)
- Kellen Natalice Vilharva
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
| | - Daniel Ferreira Leite
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
| | - Helder Freitas dos Santos
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
| | - Katia Ávila Antunes
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
| | - Paola dos Santos da Rocha
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
| | - Jaqueline Ferreira Campos
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
| | - Claudiane Vilharroel Almeida
- Protein Purification Laboratory and its Biological Functions, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Maria Lígia Rodrigues Macedo
- Protein Purification Laboratory and its Biological Functions, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Denise Brentan Silva
- Laboratory of Natural Products and Mass Spectrometry, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Caio Fernando Ramalho de Oliveira
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
- Protein Purification Laboratory and its Biological Functions, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Edson Lucas dos Santos
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
| | - Kely de Picoli Souza
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism, Federal University of Grande Dourados, Dourados, Brazil
- * E-mail:
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17
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Abstract
In its natural habitat, C. elegans encounters a wide variety of microbes, including food, commensals and pathogens. To be able to survive long enough to reproduce, C. elegans has developed a complex array of responses to pathogens. These activities are coordinated on scales that range from individual organelles to the entire organism. Often, the response is triggered within cells, by detection of infection-induced damage, mainly in the intestine or epidermis. C. elegans has, however, a capacity for cell non-autonomous regulation of these responses. This frequently involves the nervous system, integrating pathogen recognition, altering host biology and governing avoidance behavior. Although there are significant differences with the immune system of mammals, some mechanisms used to limit pathogenesis show remarkable phylogenetic conservation. The past 20 years have witnessed an explosion of host-pathogen interaction studies using C. elegans as a model. This review will discuss the broad themes that have emerged and highlight areas that remain to be fully explored.
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Affiliation(s)
- Céline N Martineau
- Aix Marseille Université, Inserm, CNRS, CIML, Turing Centre for Living Systems, Marseille, France
| | | | - Nathalie Pujol
- Aix Marseille Université, Inserm, CNRS, CIML, Turing Centre for Living Systems, Marseille, France.
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18
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Deng X, He Y, Miao X, Yu B. ATF4-mediated histone deacetylase HDAC1 promotes the progression of acute pancreatitis. Cell Death Dis 2021; 12:5. [PMID: 33414424 PMCID: PMC7791124 DOI: 10.1038/s41419-020-03296-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 02/06/2023]
Abstract
Acute pancreatitis (AP), an acute inflammatory process, can be difficult to diagnose. Activating transcription factor 4 (ATF4) has been reported to participate in the pathogenesis of AP. Additionally, histone deacetylases (HDACs) are shown to be closely related to the development of a variety of diseases, including inflammation disease. In our study, we tried to highlight the role of ATF4 in AP through regulation of HDAC1. Firstly, we validated the effect of ATF4 on pancreatic acinar cell proliferation, apoptosis, and inflammation through in vitro experiments on cellular models of caerulein-induced AP. Next, we examined the correlation between ATF4 and HDAC1, and between HDAC1 with neutral endopeptidase (NEP) and kruppel-like factor 4 (KLF4). Finally, the regulatory role of ATF4 in AP was further assessed by determination of pathological conditions, biochemical indicators and inflammation through in vivo experiments on caerulein-induced AP mouse models. After AP induction, highly expressed ATF4 was observed, and silencing ATF4 could promote pancreatic acinar cell proliferation and inhibit apoptosis. ATF4 could bind to the HDAC1 promoter and upregulate its expression in AP. Moreover, HDAC1 could increase KLF4 expression by inhibiting NEP expression. Functionally, silencing ATF4 could suppress AP through regulation of NEP-mediated KLF4 via downregulation of HDAC1. Above all, our study uncovered the promotive role of ATF4 in AP through upregulation of HDAC1.
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Affiliation(s)
- Xiaofeng Deng
- Department of General Surgery, the Second Xiangya Hospital of Central South University, Changsha, 410000, P. R. China
| | - Yu He
- Department of Radiology, the Second Xiangya Hospital of Central South University, Changsha, 410000, P. R. China
| | - Xiongying Miao
- Department of General Surgery, the Second Xiangya Hospital of Central South University, Changsha, 410000, P. R. China
| | - Bo Yu
- Department of Critical Care Medicine, the Second Xiangya Hospital of Central South University, Changsha, 410000, P. R. China.
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19
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Hamid SM, Citir M, Terzi EM, Cimen I, Yildirim Z, Dogan AE, Kocaturk B, Onat UI, Arditi M, Weber C, Traynor-Kaplan A, Schultz C, Erbay E. Inositol-requiring enzyme-1 regulates phosphoinositide signaling lipids and macrophage growth. EMBO Rep 2020; 21:e51462. [PMID: 33140520 DOI: 10.15252/embr.202051462] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/19/2020] [Accepted: 09/22/2020] [Indexed: 12/25/2022] Open
Abstract
The ER-bound kinase/endoribonuclease (RNase), inositol-requiring enzyme-1 (IRE1), regulates the phylogenetically most conserved arm of the unfolded protein response (UPR). However, the complex biology and pathology regulated by mammalian IRE1 cannot be fully explained by IRE1's one known, specific RNA target, X box-binding protein-1 (XBP1) or the RNA substrates of IRE1-dependent RNA degradation (RIDD) activity. Investigating other specific substrates of IRE1 kinase and RNase activities may illuminate how it performs these diverse functions in mammalian cells. We report that macrophage IRE1 plays an unprecedented role in regulating phosphatidylinositide-derived signaling lipid metabolites and has profound impact on the downstream signaling mediated by the mammalian target of rapamycin (mTOR). This cross-talk between UPR and mTOR pathways occurs through the unconventional maturation of microRNA (miR) 2137 by IRE1's RNase activity. Furthermore, phosphatidylinositol (3,4,5) phosphate (PI(3,4,5)P3 ) 5-phosphatase-2 (INPPL1) is a direct target of miR-2137, which controls PI(3,4,5)P3 levels in macrophages. The modulation of cellular PI(3,4,5)P3 /PIP2 ratio and anabolic mTOR signaling by the IRE1-induced miR-2137 demonstrates how the ER can provide a critical input into cell growth decisions.
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Affiliation(s)
| | - Mevlut Citir
- The Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Erdem Murat Terzi
- Department of Pathology, Laura & Isaac Perlmutter Cancer Center, New York University School of Medicine, New York, NY, USA
| | - Ismail Cimen
- Institute for Cardiovascular Prevention, LMU Munich, German Cardiovascular Research Centre, partner site Munich Heart Alliance Munich, Munich, Germany
| | - Zehra Yildirim
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Molecular Biology and Genetics, Bilkent University, Ankara, Turkey.,National Nanotechnology Center, Bilkent University, Ankara, Turkey
| | - Asli Ekin Dogan
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Molecular Biology and Genetics, Bilkent University, Ankara, Turkey.,National Nanotechnology Center, Bilkent University, Ankara, Turkey
| | - Begum Kocaturk
- Department of Pediatrics and Medicine, Division of Infectious Diseases and Immunology, and Infectious and Immunologic Diseases Research Center, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Umut Inci Onat
- Department of Molecular Biology and Genetics, Bilkent University, Ankara, Turkey.,National Nanotechnology Center, Bilkent University, Ankara, Turkey
| | - Moshe Arditi
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Pediatrics and Medicine, Division of Infectious Diseases and Immunology, and Infectious and Immunologic Diseases Research Center, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Christian Weber
- Institute for Cardiovascular Prevention, LMU Munich, German Cardiovascular Research Centre, partner site Munich Heart Alliance Munich, Munich, Germany.,Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Alexis Traynor-Kaplan
- Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA.,ATK Innovation, Analytics and Discovery, North Bend, WA, USA
| | - Carsten Schultz
- The Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany.,Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, OR, USA
| | - Ebru Erbay
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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20
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Torres Silva G, Di Pietro Fernandes C, Hiane PA, Freitas KDC, Figueiredo PS, Inada AC, Filiú WF, Maldonade IR, Nunes ÂA, de Oliveira LCS, Caires ARL, Michels F, Candido CJ, Cavalheiro LF, Arakaki Asato M, Rodrigues Donadon J, Bacelar de Faria B, Tatara MB, Rosa Croda JH, Pott A, Nazário CED, Guimarães RDCA. Caryocar brasiliense Cambess. Pulp Oil Supplementation Reduces Total Cholesterol, LDL-c, and Non-HDL-c in Animals. Molecules 2020; 25:molecules25194530. [PMID: 33022905 PMCID: PMC7582708 DOI: 10.3390/molecules25194530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/07/2020] [Accepted: 08/12/2020] [Indexed: 12/17/2022] Open
Abstract
The fruit of Caryocar brasiliense Cambess. is a source of oil with active compounds that are protective to the organism. In our work, we analyzed the physicochemical characteristics and evaluated the effects of supplementation with C. brasiliense oil in an animal model. We characterized the oil by indices of quality and identity, optical techniques of absorption spectroscopy in the UV–Vis region and fluorescence, and thermogravimetry/derived thermogravimetry (TG/DTG). For the animal experiment, we utilized mice (Mus musculus) supplemented with lipidic source in different dosages. The results demonstrated that C. brasiliense oil is an alternative source for human consumption and presents excellent oxidative stability. Primarily, it exhibited oleic MFA (53.56%) and palmitic SFA (37.78%). The oil level of tocopherols and tocotrienols was superior to the carotenoids. The supplementation with C. brasiliense oil reduced the levels of total cholesterol, LDL-c, and non-HDL-c. Regarding visceral fats and adiposity index, the treatment synergically supplemented with olive oil and C. brasiliense oil (OO + CO) obtained the best result. Therefore, C. brasiliense oil is a high quality product for consumption. Its supplementation promotes beneficial effects mainly on the lipidic profile.
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Affiliation(s)
- Gabriela Torres Silva
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
| | - Carolina Di Pietro Fernandes
- Pharmaceutical Science, Food and Nutrition Faculty, Federal University of Mato Grosso do Sul-UFMS, Campo Grande 79079-900, Brazil; (C.D.P.F.); (W.F.F.); (A.P.)
| | - Priscila Aiko Hiane
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
| | - Karine de Cássia Freitas
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
| | - Priscila Silva Figueiredo
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
| | - Aline Carla Inada
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
| | - Wander Fernando Filiú
- Pharmaceutical Science, Food and Nutrition Faculty, Federal University of Mato Grosso do Sul-UFMS, Campo Grande 79079-900, Brazil; (C.D.P.F.); (W.F.F.); (A.P.)
| | - Iriani Rodrigues Maldonade
- Laboratory of Food Science and Technology, Brazilian Agricultural Research Corporation (Embrapa Hortaliças), Brasília 70275-970, Brazil;
| | | | - Lincoln Carlos Silva de Oliveira
- Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (L.C.S.d.O.); (L.F.C.); (C.E.D.N.)
| | - Anderson Rodrigues Lima Caires
- Optics and Photonics Group, Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (A.R.L.C.); (F.M.)
| | - Flavio Michels
- Optics and Photonics Group, Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (A.R.L.C.); (F.M.)
| | - Camila Jordão Candido
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
| | - Leandro Fontoura Cavalheiro
- Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (L.C.S.d.O.); (L.F.C.); (C.E.D.N.)
| | - Marcel Arakaki Asato
- Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | - Juliana Rodrigues Donadon
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
| | | | - Mariana Bento Tatara
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados 79804-970, Brazil; (M.B.T.); (J.H.R.C.)
| | - Julio Henrique Rosa Croda
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados 79804-970, Brazil; (M.B.T.); (J.H.R.C.)
- School of Medicine Federal University of Mato Grosso do Sul, Oswaldo Cruz Foundation—Fiocruz, Campo Grande 79074-460, Brazil
| | - Arnildo Pott
- Pharmaceutical Science, Food and Nutrition Faculty, Federal University of Mato Grosso do Sul-UFMS, Campo Grande 79079-900, Brazil; (C.D.P.F.); (W.F.F.); (A.P.)
| | - Carlos Eduardo Domingues Nazário
- Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (L.C.S.d.O.); (L.F.C.); (C.E.D.N.)
| | - Rita de Cássia Avellaneda Guimarães
- Program in Health and Development in the Midwest Region, Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil; (G.T.S.); (P.A.H.); (K.d.C.F.); (P.S.F.); (A.C.I.); (C.J.C.); (J.R.D.)
- Correspondence: ; Tel.: +55-67-3345-7416
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Oczkowicz M, Szmatoła T, Świątkiewicz M, Koseniuk A, Smołucha G, Witarski W, Wierzbicka A. 3'quant mRNA-Seq of Porcine Liver Reveals Alterations in UPR, Acute Phase Response, and Cholesterol and Bile Acid Metabolism in Response to Different Dietary Fats. Genes (Basel) 2020; 11:genes11091087. [PMID: 32961898 PMCID: PMC7565913 DOI: 10.3390/genes11091087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 12/18/2022] Open
Abstract
Animal fats are considered to be unhealthy, in contrast to vegetable fats, which are rich in unsaturated fatty acids. However, the use of some fats, such as coconut oil, is still controversial. In our experiment, we divided experimental animals (domestic pigs) into three groups differing only in the type of fat used in the diet: group R: rapeseed oil (n = 5); group B: beef tallow (n = 5); group C: coconut oil (n = 6). After transcriptomic analysis of liver samples, we identified 188, 93, and 53 DEGs (differentially expressed genes) in R vs. B, R vs. C, and B vs. C comparisons, respectively. Next, we performed a functional analysis of identified DEGs with String and IPA software. We observed the enrichment of genes engaged in the unfolded protein response (UPR) and the acute phase response among genes upregulated in B compared to R. In contrast, cholesterol biosynthesis and cholesterol efflux enrichments were observed among genes downregulated in B when compared to R. Moreover, activation of the UPR and inhibition of the sirtuin signaling pathway were noted in C when compared to R. The most striking difference in liver transcriptomic response between C and B was the activation of the acute phase response and inhibition of bile acid synthesis in the latest group. Our results suggest that excessive consumption of animal fats leads to the activation of a cascade of mutually propelling processes harmful to the liver: inflammation, UPR, and imbalances in the biosynthesis of cholesterol and bile acids via altered organelle membrane composition. Nevertheless, these studies should be extended with analysis at the level of proteins and their function.
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Affiliation(s)
- Maria Oczkowicz
- Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083 Balice, Poland; (T.S.); (A.K.); (G.S.); (W.W.); (A.W.)
- Correspondence: ; Tel.: +48666081109
| | - Tomasz Szmatoła
- Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083 Balice, Poland; (T.S.); (A.K.); (G.S.); (W.W.); (A.W.)
- Centre of Experimental and Innovative Medicine, University of Agriculture in Kraków, Al. Mickiewicza 24/28, 30-059 Kraków, Poland
| | - Małgorzata Świątkiewicz
- Department of Animal Nutrition and Feed Science, National Research Institute of Animal Production, ul Krakowska 1, 32-083 Balice, Poland;
| | - Anna Koseniuk
- Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083 Balice, Poland; (T.S.); (A.K.); (G.S.); (W.W.); (A.W.)
| | - Grzegorz Smołucha
- Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083 Balice, Poland; (T.S.); (A.K.); (G.S.); (W.W.); (A.W.)
| | - Wojciech Witarski
- Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083 Balice, Poland; (T.S.); (A.K.); (G.S.); (W.W.); (A.W.)
| | - Alicja Wierzbicka
- Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083 Balice, Poland; (T.S.); (A.K.); (G.S.); (W.W.); (A.W.)
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Neutrophil Gelatinase-Associated Lipocalin Protects Acinar Cells From Cerulein-Induced Damage During Acute Pancreatitis. Pancreas 2020; 49:1297-1306. [PMID: 33122517 PMCID: PMC8056863 DOI: 10.1097/mpa.0000000000001690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Elevated neutrophil gelatinase-associated lipocalin (NGAL) is a promising marker for severe acute pancreatitis (SAP) and multiple organ failure, suggesting systemic and local contributions during pancreatitis. We investigated the role of NGAL locally on acinar cell biology. METHODS Western blot, reverse transcriptase-polymerase chain reaction, and immunohistochemistry analysis were performed to analyze the levels of NGAL receptors, apoptotic and regeneration markers, and 4-hydroxynonenal (4HNE) levels, 3-[4,5-Dimethylthiazole-2-yl]-2, 5-diphenyltetrazolium bromide assay, and annexin V/propidium iodide staining were used to evaluate cell viability, and effect on endothelial cells was accessed by endothelial permeability assay. RESULTS Cerulein treatment at 20 μM for 12 hours significantly reduced acinar cell viability by 40%, which was rescued by NGAL at 800 and 1600 ng/mL concentrations, observed during mild and SAP, respectively. Mechanistically, NGAL significantly reduced the levels of reactive oxygen species and 4HNE adduct formation in a 24p3R-dependent manner and upregulated the expression of acinar cell regeneration markers, like CDK-2, CDK-4, and C-myc. However, SAP levels of NGAL significantly increased endothelial permeability and downregulated the levels of ZO-1, and cerulein treatment in NGAL knockout mice showed increased levels of 4HNE adducts. CONCLUSIONS Neutrophil gelatinase-associated lipocalin rescues intracellular reactive oxygen species during pancreatitis and promotes survival and regeneration of acinar cells.
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Ebstein F, Poli Harlowe MC, Studencka-Turski M, Krüger E. Contribution of the Unfolded Protein Response (UPR) to the Pathogenesis of Proteasome-Associated Autoinflammatory Syndromes (PRAAS). Front Immunol 2019; 10:2756. [PMID: 31827472 PMCID: PMC6890838 DOI: 10.3389/fimmu.2019.02756] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/11/2019] [Indexed: 12/13/2022] Open
Abstract
Type I interferonopathies cover a phenotypically heterogeneous group of rare genetic diseases including the recently described proteasome-associated autoinflammatory syndromes (PRAAS). By definition, PRAAS are caused by inherited and/or de novo loss-of-function mutations in genes encoding proteasome subunits such as PSMB8, PSMB9, PSMB7, PSMA3, or proteasome assembly factors including POMP and PSMG2, respectively. Disruption of any of these subunits results in perturbed intracellular protein homeostasis including accumulation of ubiquitinated proteins which is accompanied by a type I interferon (IFN) signature. The observation that, similarly to pathogens, proteasome dysfunctions are potent type I IFN inducers is quite unexpected and, up to now, the underlying molecular mechanisms of this process remain largely unknown. One promising candidate for triggering type I IFN under sterile conditions is the unfolded protein response (UPR) which is typically initiated in response to an accumulation of unfolded and/or misfolded proteins in the endoplasmic reticulum (ER) (also referred to as ER stress). The recent observation that the UPR is engaged in subjects carrying POMP mutations strongly suggests its possible implication in the cause-and-effect relationship between proteasome impairment and interferonopathy onset. The purpose of this present review is therefore to discuss the possible role of the UPR in the pathogenesis of PRAAS. We will particularly focus on pathways initiated by the four ER-membrane proteins ATF6, PERK, IRE1-α, and TCF11/Nrf1 which undergo activation under proteasome inhibition. An overview of the current understanding of the mechanisms and potential cross-talk between the UPR and inflammatory signaling casacades is provided to convey a more integrated picture of the pathophysiology of PRAAS and shed light on potential biomarkers and therapeutic targets.
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Affiliation(s)
- Frédéric Ebstein
- Institut für Medizinische Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Greifswald, Germany
| | - María Cecilia Poli Harlowe
- Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.,Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Maja Studencka-Turski
- Institut für Medizinische Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Elke Krüger
- Institut für Medizinische Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Greifswald, Germany
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