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Yorek M. Combination therapy is it in the future for successfully treating peripheral diabetic neuropathy? Front Endocrinol (Lausanne) 2024; 15:1357859. [PMID: 38812811 PMCID: PMC11133577 DOI: 10.3389/fendo.2024.1357859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 04/16/2024] [Indexed: 05/31/2024] Open
Abstract
In 2022, the Center for Disease Control and Prevention reported that 11.3% of the United States population, 37.3 million people, had diabetes and 38% of the population had prediabetes. A large American study conducted in 2021 and supported by many other studies, concluded that about 47% of diabetes patients have peripheral neuropathy and that diabetic neuropathy was present in 7.5% of patients at the time of diabetes diagnosis. In subjects deemed to be pre-diabetes and impaired glucose tolerance there was a wide range of prevalence estimates (interquartile range (IQR): 6%-34%), but most studies (72%) reported a prevalence of peripheral neuropathy ≥10%. There is no recognized treatment for diabetic peripheral neuropathy (DPN) other than good blood glucose control. Good glycemic control slows progression of DPN in patients with type 1 diabetes but for patients with type 2 diabetes it is less effective. With obesity and type 2 diabetes at epidemic levels the need of a treatment for DPN could not be more important. In this article I will first present background information on the "primary" mechanisms shown from pre-clinical studies to contribute to DPN and then discuss mono- and combination therapies that have demonstrated efficacy in animal studies and may have success when translated to human subjects. I like to compare the challenge of finding an effective treatment for DPN to the ongoing work being done to treat hypertension. Combination therapy is the recognized approach used to normalize blood pressure often requiring two, three or more drugs in addition to lifestyle modification to achieve the desired outcome. Hypertension, like DPN, is a progressive disease caused by multiple mechanisms. Therefore, it seems likely as well as logical that combination therapy combined with lifestyle adjustments will be required to successfully treat DPN.
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Affiliation(s)
- Mark Yorek
- Department of Internal Medicine, University of Iowa, Iowa City, IA, United States
- Department of Veterans Affairs Iowa City Health Care System, Iowa City, IA, United States
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, United States
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2
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Xie L, Li C, Wang C, Wu Z, Wang C, Chen C, Chen X, Zhou D, Zhou Q, Lu P, Ding C, Liu C, Lin J, Zhang X, Yu X, Yu W. Aspirin-Mediated Acetylation of SIRT1 Maintains Intestinal Immune Homeostasis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306378. [PMID: 38482749 PMCID: PMC11109641 DOI: 10.1002/advs.202306378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 02/07/2024] [Indexed: 05/23/2024]
Abstract
Aspirin, also named acetylsalicylate, can directly acetylate the side-chain of lysine in protein, which leads to the possibility of unexplained drug effects. Here, the study used isotopic-labeling aspirin-d3 with mass spectrometry analysis to discover that aspirin directly acetylates 10 HDACs proteins, including SIRT1, the most studied NAD+-dependent deacetylase. SIRT1 is also acetylated by aspirin in vitro. It is also identified that aspirin directly acetylates lysine 408 of SIRT1, which abolishes SIRT1 deacetylation activity by impairing the substrates binding affinity. Interestingly, the lysine 408 of SIRT1 can be acetylated by CBP acetyltransferase in cells without aspirin supplement. Aspirin can inhibit SIRT1 to increase the levels of acetylated p53 and promote p53-dependent apoptosis. Moreover, the knock-in mice of the acetylation-mimic mutant of SIRT1 show the decreased production of pro-inflammatory cytokines and maintain intestinal immune homeostasis. The study indicates the importance of the acetylated internal functional site of SIRT1 in maintaining intestinal immune homeostasis.
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Affiliation(s)
- Liangguo Xie
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Chaoqun Li
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Chao Wang
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Zhen Wu
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Changchun Wang
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Chunyu Chen
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Xiaojian Chen
- Department of Colorectal and Anal SurgeryXinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Dejian Zhou
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Qiang Zhou
- Department of Research Center for Molecular Recognition and SynthesisDepartment of ChemistryFudan UniversityShanghaiChina
| | - Ping Lu
- Department of Research Center for Molecular Recognition and SynthesisDepartment of ChemistryFudan UniversityShanghaiChina
| | - Chen Ding
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Chen‐Ying Liu
- Department of Colorectal and Anal SurgeryXinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Jinzhong Lin
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Xumin Zhang
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Xiaofei Yu
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
| | - Wei Yu
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghaiChina
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3
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Fan T, Guan P, Zhong X, Xiang M, Peng Y, Zhou R, Gong J, Zheng Y, Dai A, Feng J, Yu H, Li J, Li H, Wang Y. Functional Connectivity Alterations and Molecular Characterization of the Anterior Cingulate Cortex in Tinnitus Pathology without Hearing Loss. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304709. [PMID: 38009798 PMCID: PMC10797451 DOI: 10.1002/advs.202304709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 11/06/2023] [Indexed: 11/29/2023]
Abstract
Compared with individuals with hearing loss, tinnitus patients without hearing loss have more psychological or emotional problems. Tinnitus is closely associated to abnormal metabolism and function of the limbic system, a key brain region for emotion experience, but the underlying molecular mechanism remains unknown. Using whole-brain microvasculature dynamics imaging, the anterior cingulate cortex (ACC) is identified as a key brain region of limbic system involve in the onset of salicylate-induced tinnitus in mice. In the tinnitus group, there is enhanced purine metabolism, oxidative phosphorylation, and a distinct pattern of phosphorylation in glutamatergic synaptic pathway according to the metabolome profiles, quantitative proteomic, and phosphoproteomic data of mice ACC tissue. Electroencephalogram in tinnitus patients with normal hearing thresholds show that the functional connectivity between pregenual anterior cingulate cortex and the primary auditory cortex is significantly increased for high-gamma frequency band, which is positively correlated with the serum glutamate level. These findings indicate that ACC plays an important role in the pathophysiology of tinnitus by interacting with the primary auditory cortex and provide potential molecular targets in the ACC for tinnitus treatment.
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Affiliation(s)
- Ting Fan
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
| | - Peng‐Fei Guan
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
| | - Xiao‐Fang Zhong
- Clinical Laboratory CenterChildren's Hospital of Fudan UniversityShanghai201102China
| | - Meng‐Ya Xiang
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
| | - Ying‐Qiu Peng
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
| | - Ruo‐Qiao Zhou
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
| | - Jia‐Min Gong
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
| | - Yu‐Qing Zheng
- Zhejiang Chinese Medical UniversityHangzhouZhejiang310053China
| | - A‐Qiang Dai
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
| | - Jia‐Ling Feng
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
| | - Hong‐Zhe Yu
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
| | - Jian Li
- Clinical Laboratory CenterChildren's Hospital of Fudan UniversityShanghai201102China
| | - Hua‐Wei Li
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
| | - Yun‐Feng Wang
- ENT Institute and Department of OtorhinolaryngologyEYE & ENT HospitalFudan UniversityShanghai200031China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200031China
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4
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d'Astous ÉV, Dauphin-Ducharme P. DNA Chimeras as Electrochemical Biosensors for Host-Guest Measurements in Blood. Chemistry 2023; 29:e202302780. [PMID: 37738609 DOI: 10.1002/chem.202302780] [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: 08/25/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 09/24/2023]
Abstract
Few sensing platforms have become ubiquitous to enable rapid and convenient measurements at the point-of-care. Those, however, are "one-off" technologies, meaning that they can only detect a single target and are hardly adaptable. In response, we plan to develop a sensing platform that can be extended to detect other classes of molecules and that affords rapid, convenient, continuous measurements directly in undiluted complex matrices. For this, we decided to rely on a host molecule that presents reversible interactions toward specific guest molecules to develop a new class of sensors that we coined "Electrochemical DNA-host chimeras". As a proof-of-concept for our sensor, we decided to use cyclobis(paraquat-p-phenylene) ("blue box") that we attached on an electrode-bound DNA to allow measurements of electron-rich guests such as dopamine and aspirin. Doing so allows to promote host-guest complex that could be quantified using blue box's electrochemistry. Because of this unique sensor architecture, we achieve, to our knowledge, the first reagentless, continuous and rapid (<5 min) host-guest measurements in undiluted whole blood. We envision that given the library of electroactive host molecules that this will allow the development of a sensing platform for measurements of several classes of molecules in complex matrices at the point-of-care.
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Affiliation(s)
- Élodie V d'Astous
- Département de chimie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
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5
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Hüttl M, Markova I, Miklánková D, Zapletalova I, Kujal P, Šilhavý J, Pravenec M, Malinska H. Hypolipidemic and insulin sensitizing effects of salsalate beyond suppressing inflammation in a prediabetic rat model. Front Pharmacol 2023; 14:1117683. [PMID: 37077818 PMCID: PMC10106727 DOI: 10.3389/fphar.2023.1117683] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/24/2023] [Indexed: 04/05/2023] Open
Abstract
Background and aims: Low-grade chronic inflammation plays an important role in the pathogenesis of metabolic syndrome, type 2 diabetes and their complications. In this study, we investigated the effects of salsalate, a non-steroidal anti-inflammatory drug, on metabolic disturbances in an animal model of prediabetes—a strain of non-obese hereditary hypertriglyceridemic (HHTg) rats.Materials and Methods: Adult male HHTg and Wistar control rats were fed a standard diet without or with salsalate delivering a daily dose of 200 mg/kg of body weight for 6 weeks. Tissue sensitivity to insulin action was measured ex vivo according to basal and insulin-stimulated 14C-U-glucose incorporation into muscle glycogen or adipose tissue lipids. The concentration of methylglyoxal and glutathione was determined using the HPLC-method. Gene expression was measured by quantitative RT-PCR.Results: Salsalate treatment of HHTg rats when compared to their untreated controls was associated with significant amelioration of inflammation, dyslipidemia and insulin resistance. Specificaly, salsalate treatment was associated with reduced inflammation, oxidative and dicarbonyl stress when inflammatory markers, lipoperoxidation products and methylglyoxal levels were significantly decreased in serum and tissues. In addition, salsalate ameliorated glycaemia and reduced serum lipid concentrations. Insulin sensitivity in visceral adipose tissue and skeletal muscle was significantly increased after salsalate administration. Further, salsalate markedly reduced hepatic lipid accumulation (triglycerides −29% and cholesterol −14%). Hypolipidemic effects of salsalate were associated with differential expression of genes coding for enzymes and transcription factors involved in lipid synthesis (Fas, Hmgcr), oxidation (Pparα) and transport (Ldlr, Abc transporters), as well as changes in gene expression of cytochrome P450 proteins, in particular decreased Cyp7a and increased Cyp4a isoforms.Conclusion: These results demonstrate important anti-inflammatory and anti-oxidative effects of salsalate that were associated with reduced dyslipidemia and insulin resistance in HHTg rats. Hypolipidemic effects of salsalate were associated with differential expression of genes regulating lipid metabolism in the liver. These results suggest potential beneficial use of salsalate in prediabetic patients with NAFLD symptoms.
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Affiliation(s)
- Martina Hüttl
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech
| | - Irena Markova
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech
| | - Denisa Miklánková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech
| | - Iveta Zapletalova
- Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech
| | - Petr Kujal
- Department of Pathology, Third Faculty of Medicine, Charles University, Prague, Czech
| | - Jan Šilhavý
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech
| | - Michal Pravenec
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech
| | - Hana Malinska
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech
- *Correspondence: Hana Malinska,
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6
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Nazam N, Jabir NR, Ahmad I, Alharthy SA, Khan MS, Ayub R, Tabrez S. Phenolic Acids-Mediated Regulation of Molecular Targets in Ovarian Cancer: Current Understanding and Future Perspectives. Pharmaceuticals (Basel) 2023; 16:274. [PMID: 37259418 PMCID: PMC9962268 DOI: 10.3390/ph16020274] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 11/26/2023] Open
Abstract
Cancer is a global health concern with a dynamic rise in occurrence and one of the leading causes of mortality worldwide. Among different types of cancer, ovarian cancer (OC) is the seventh most diagnosed malignant tumor, while among the gynecological malignancies, it ranks third after cervical and uterine cancer and sadly bears the highest mortality and worst prognosis. First-line treatments have included a variety of cytotoxic and synthetic chemotherapeutic medicines, but they have not been particularly effective in extending OC patients' lives and are associated with side effects, recurrence risk, and drug resistance. Hence, a shift from synthetic to phytochemical-based agents is gaining popularity, and researchers are looking into alternative, cost-effective, and safer chemotherapeutic strategies. Lately, studies on the effectiveness of phenolic acids in ovarian cancer have sparked the scientific community's interest because of their high bioavailability, safety profile, lesser side effects, and cost-effectiveness. Yet this is a road less explored and critically analyzed and lacks the credibility of the novel findings. Phenolic acids are a significant class of phytochemicals usually considered in the nonflavonoid category. The current review focused on the anticancer potential of phenolic acids with a special emphasis on chemoprevention and treatment of OC. We tried to summarize results from experimental, epidemiological, and clinical studies unraveling the benefits of various phenolic acids (hydroxybenzoic acid and hydroxycinnamic acid) in chemoprevention and as anticancer agents of clinical significance.
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Affiliation(s)
- Nazia Nazam
- Amity Institute of Molecular Medicine & Stem Cell Research, Amity University, Noida 201301, Uttar Pradesh, India
| | - Nasimudeen R. Jabir
- Department of Biochemistry, Centre for Research and Development, PRIST University, Vallam, Thanjavur 613403, Tamil Nadu, India
| | - Iftikhar Ahmad
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia
| | - Saif A. Alharthy
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rashid Ayub
- Technology and Innovation Unit, Department of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Shams Tabrez
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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7
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Pacławski A, Politis S, Balafas E, Mina E, Papakyriakopoulou P, Christodoulou E, Kostomitsopoulos N, Rekkas DM, Valsami G, Giovagnoli S. Development and Pharmacokinetics of a Novel Acetylsalicylic Acid Dry Powder for Pulmonary Administration. Pharmaceutics 2022; 14:pharmaceutics14122819. [PMID: 36559312 PMCID: PMC9786194 DOI: 10.3390/pharmaceutics14122819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/28/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Aspirin is an historic blockbuster product, and it has been proposed in a wide range of formulas. Due to exacerbation risks, the pulmonary route has been seldom considered as an alternative to conventional treatments. Only recently, owing to overt advantages, inhalable acetylsalicylic acid dry powders (ASA DPI) began to be considered as an option. In this work, we developed a novel highly performing inhalable ASA DPI using a nano spray-drying technique and leucine as an excipient and evaluated its pharmacokinetics compared with oral administration. The formulation obtained showed remarkable respirability and quality features. Serum and lung ASA DPI profiles showed faster presentation in blood and higher retention compared with oral administration. The dry powder was superior to the DPI suspension. The relative bioavailability in serum and lungs claimed superiority of ASA DPI over oral administration, notwithstanding a fourfold lower pulmonary dose. The obtained ASA DPI formulation shows promising features for the treatment of inflammatory and infectious lung pathologies.
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Affiliation(s)
- Adam Pacławski
- Department of Pharmaceutical Technology and Biopharmaceutics, Jagiellonian University Medical College, Medyczna 9 St., 30-688 Cracow, Poland
| | - Stavros Politis
- Section of Pharmaceutical Technology, Department of Pharmacy, National & Kapodistrian University of Athens, 15784 Athens, Greece
| | - Evangelos Balafas
- Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Ekaterini Mina
- Section of Pharmaceutical Technology, Department of Pharmacy, National & Kapodistrian University of Athens, 15784 Athens, Greece
| | - Paraskevi Papakyriakopoulou
- Section of Pharmaceutical Technology, Department of Pharmacy, National & Kapodistrian University of Athens, 15784 Athens, Greece
| | - Eirini Christodoulou
- Section of Pharmaceutical Technology, Department of Pharmacy, National & Kapodistrian University of Athens, 15784 Athens, Greece
| | - Nikolaos Kostomitsopoulos
- Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Dimitrios M. Rekkas
- Section of Pharmaceutical Technology, Department of Pharmacy, National & Kapodistrian University of Athens, 15784 Athens, Greece
- Correspondence: (D.M.R.); (S.G.); Tel.: +39-075-5585162 (S.G.)
| | - Georgia Valsami
- Section of Pharmaceutical Technology, Department of Pharmacy, National & Kapodistrian University of Athens, 15784 Athens, Greece
| | - Stefano Giovagnoli
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
- Correspondence: (D.M.R.); (S.G.); Tel.: +39-075-5585162 (S.G.)
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8
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Phillips HN, Heins BJ. Alternative Practices in Organic Dairy Production and Effects on Animal Behavior, Health, and Welfare. Animals (Basel) 2022; 12:1785. [PMID: 35883331 PMCID: PMC9311922 DOI: 10.3390/ani12141785] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 01/22/2023] Open
Abstract
The number of organic dairy farms has increased because of the increased growth of the organic market, higher organic milk price, and because some consumers prefer to purchase products from less intensive production systems. Best management practices are expected from organic dairy farms to ensure animal health and milk production. Organic dairy producers typically transition from conventional systems to avoid chemicals and pesticides, enhance economic viability, improve the environment, and increase soil fertility. Organic dairy producers respect and promote a natural environment for their animals, is also an important component of animal welfare. Organic producers have few options to mitigate pain in dairy calves. In the United States, therapies to mitigate pain for disbudded organic dairy calves are regulated by the US National Organic Program. Organic producers regularly use naturally derived alternatives for the treatment of health disorders of dairy calves, heifers, and cows. Alternative natural products may provide an option to mitigate pain in organic dairy calves. Despite the reluctance to implement pain alleviation methods, some organic farmers have expressed interest in or currently implement plant-based alternatives. Efficacy studies of alternative remedies for organic livestock are needed to verify that their use improves animal welfare. Non-effective practices represent a major challenge for organic dairy animal welfare. The relationship between humans and animals may be jeopardized during milking because first-lactation cows may exhibit adverse behaviors during the milking process, such as kicking and stomping. The periparturient period is particularly challenging for first-lactation cows. Adverse behaviors may jeopardize animal welfare and reduce safety for humans because stressed heifers may kick off the milking unit, kick at milkers, and display other unwanted behaviors in the milking parlor. This may reduce milking efficiency, overall production, and ultimately reduce the profitability of the dairy farm. Positive animal welfare is a challenging balancing act between the three overlapping ethic concerns. Identifying animal welfare deficits in organic livestock production is the first step in capitalizing on these opportunities to improve welfare.
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Affiliation(s)
- Hannah N. Phillips
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108, USA
| | - Bradley J. Heins
- West Central Research and Outreach Center, University of Minnesota, 46352 MN-329, Morris, MN 56267, USA
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9
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de Siqueira DVF, Strazza PS, Benites NM, Leão RM. Salicylate activates KATP channels and reduces spontaneous firing in glycinergic cartwheel neurons in the dorsal cochlear nucleus of rats. Eur J Pharmacol 2022; 926:175026. [DOI: 10.1016/j.ejphar.2022.175026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/06/2022] [Accepted: 05/09/2022] [Indexed: 11/30/2022]
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10
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El-Ashmawy IM, Ebeid MA, Aljohani MSM, Alhumaydhi FA, Aljohani ASM. Assessment of the hepatorenal and hematological parameters of rats exposed to graded doses of lysine acetylsalicylate. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2022. [DOI: 10.1080/16583655.2021.2021054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ibrahim M. El-Ashmawy
- Department of Veterinary Medicine, College of Agricultural and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
- Department of Pharmacology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Marwa A. Ebeid
- Department of Pharmacology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Moath S. M. Aljohani
- Department of Family and Community Medicine, College of Medicine and Medical Sciences, Qassim University, Unizah, Saudi Arabia
| | - Fahad A. Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Abdullah S. M. Aljohani
- Department of Veterinary Medicine, College of Agricultural and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
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11
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Xu R, Yan Y, Zheng X, Zhang H, Chen W, Li H, Dong Z. Aspirin Suppresses Breast Cancer Metastasis to Lung by Targeting Anoikis Resistance. Carcinogenesis 2021; 43:104-114. [PMID: 34958360 DOI: 10.1093/carcin/bgab117] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 11/13/2021] [Accepted: 12/01/2021] [Indexed: 11/12/2022] Open
Abstract
Clinical evidence recently suggests that the regular use of aspirin is associated with a lower risk of breast cancer metastasis, but mechanisms remain unclear. Resistance to anoikis has been implicated in malignant transformation and metastasis. Here we investigated whether aspirin might prevent breast cancer metastasis to lung by targeting anoikis resistance. Aspirin sensitized breast cancer cells to anoikis in vitro, and lowered the circulating tumor cells as well as distant metastasis in vivo. Mechanistically, thromboxane A2 (TXA2) pathway was identified as the relevant molecular target for aspirin in anoikis sensitization. Upon detachment, both thromboxane A2 receptor (TP) and thromboxane A2 synthase 1 (TBXAS1) were up-regulated in metastatic breast cancer cells, conferred anoikis resistance through persistent activation of Akt, thereby facilitated breast cancer metastasis to lung. Consistently, either knockdown of TP in cancer cells or genetic deletion of TP in mice protected against lung metastasis in vivo. Collectively, TXA2 pathway plays a critical role in anoikis resistance, and might serve as potential target for chemoprevention of breast cancer metastasis.
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Affiliation(s)
- Ruijie Xu
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yongheng Yan
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Xu Zheng
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Hao Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Wei Chen
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Haitao Li
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.,State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Zigang Dong
- The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450000, China.,The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
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12
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Neumann NR, Thompson DC, Vasiliou V. AMPK activators for the prevention and treatment of neurodegenerative diseases. Expert Opin Drug Metab Toxicol 2021; 17:1199-1210. [PMID: 34632898 DOI: 10.1080/17425255.2021.1991308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION As the global population ages at an unprecedented rate, the burden of neurodegenerative diseases is expected to grow. Given the profound impact illness like dementia exert on individuals and society writ large, researchers, physicians, and scientific organizations have called for increased investigation into their treatment and prevention. Both metformin and aspirin have been associated with improved cognitive outcomes. These agents are related in their ability to stimulate AMP kinase (AMPK). Momordica charantia, another AMPK activator, is a component of traditional medicines and a novel agent for the treatment of cancer. It is also being evaluated as a nootropic agent. AREAS COVERED This article is a comprehensive review which examines the role of AMPK activation in neuroprotection and the role that AMPK activators may have in the management of dementia and cognitive impairment. It evaluates the interaction of metformin, aspirin, and Momordica charantia, with AMPK, and reviews the literature characterizing these agents' impact on neurodegeneration. EXPERT OPINION We suggest that AMPK activators should be considered for the treatment and prevention of neurodegenerative diseases. We identify multiple areas of future investigation which may have a profound impact on patients worldwide.
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Affiliation(s)
- Natalie R Neumann
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, USA
| | - David C Thompson
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, CO, USA
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, Yale School of Medicine, New Haven, CT, USA
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13
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Graham GG, Scott KF. Limitations of drug concentrations used in cell culture studies for understanding clinical responses of NSAIDs. Inflammopharmacology 2021; 29:1261-1278. [PMID: 34510275 DOI: 10.1007/s10787-021-00871-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 08/21/2021] [Indexed: 02/02/2023]
Abstract
In this review, the in vitro cellular effects of six nonsteroidal anti-inflammatory drugs (NSAIDs), salicylate, ibuprofen, naproxen, indomethacin, celecoxib and diclofenac, are examined. Inhibition of prostanoid synthesis in vitro generally occurs within the therapeutic range of plasma concentrations that are observed in vivo, consistent with the major action of NSAIDs being inhibition of prostanoid production. An additional probable cellular action of NSAIDs has been discovered recently, viz. decreased oxidation of the endocannabinoids, 2-arachidonoyl glycerol and arachidonyl ethanolamide. Many effects of NSAIDs, other than decreased oxidation of arachidonic acid and endocannabinoids, have been put forward but almost all of these additional processes are observed at supratherapeutic concentrations when the concentration of albumin, the major protein that binds NSAIDs, is taken into account. However, one exception is salicylate, a very potent inhibitor of the neutrophilic enzyme, myeloperoxidase, the inhibition of which leads to reduced production of the inflammatory mediator, hypochlorous acid, and inhibition of the inflammation associated with rheumatoid arthritis.
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Affiliation(s)
- Garry G Graham
- Department of Clinical Pharmacology, St Vincent's Hospital Sydney, Darlinghurst, NSW, 2010, Australia. .,School of Medical Sciences, University of New South Wales, Kensington, NSW, 2052, Australia.
| | - Kieran F Scott
- School of Medicine, Western Sydney University, Campbelltown, NSW, Australia. .,Ingham Institute of Applied Medical Research, 1 Campbell St, Liverpool, NSW, 2170, Australia.
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14
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Truong VL, Jun M, Jeong WS. Phytochemical and Over-The-Counter Drug Interactions: Involvement of Phase I and II Drug-Metabolizing Enzymes and Phase III Transporters. J Med Food 2021; 24:786-805. [PMID: 34382862 DOI: 10.1089/jmf.2021.k.0003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Consumption of plant-derived natural products and over-the-counter (OTC) drugs is increasing on a global scale, and studies of phytochemical-OTC drug interactions are becoming more significant. The intake of dietary plants and herbs rich in phytochemicals may affect drug-metabolizing enzymes (DMEs) and transporters. These effects may lead to alterations in pharmacokinetics and pharmacodynamics of OTC drugs when concomitantly administered. Some phytochemical-drug interactions benefit patients through enhanced efficacy, but many interactions cause adverse effects. This review discusses possible mechanisms of phytochemical-OTC drug interactions mediated by phase I and II DMEs and phase III transporters. In addition, current information is summarized for interactions between phytochemicals derived from fruits, vegetables, and herbs and OTC drugs, and counseling is provided on appropriate and safe use of OTC drugs.
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Affiliation(s)
- Van-Long Truong
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea
| | - Mira Jun
- Brain Busan 21 Plus Program, Department of Food Science and Nutrition, Graduate School, Center for Silver-Targeted Biomaterials, Dong-A University, Busan, Korea
| | - Woo-Sik Jeong
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea
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15
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Cui J, Jia J. Natural COX-2 Inhibitors as Promising Anti-inflammatory Agents: An Update. Curr Med Chem 2021; 28:3622-3646. [PMID: 32942970 DOI: 10.2174/0929867327999200917150939] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/09/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022]
Abstract
COX-2, a key enzyme that catalyzed the rate-limiting steps in the conversion of arachidonic acid to prostaglandins, played a pivotal role in the inflammatory process. Different from other family members, COX-2 was barely detectable in normal physiological conditions and highly inducible during the acute inflammatory response of human bodies to injuries or infections. Therefore, the therapeutic utilization of selective COX-2 inhibitors has already been considered as an effective approach for the treatment of inflammation with diminished side effects. Currently, both traditional and newer NSAIDs are the commonly prescribed medications that treat inflammatory diseases by targeting COX-2. However, due to the cardiovascular side-effects of the NSAIDs, finding reasonable alternatives for these frequently prescribed medicines are a hot spot in medicinal chemistry research. Naturallyoccurring compounds have been reported to inhibit COX-2, thereby possessing beneficial effects against inflammation and certain cell injury. The review mainly concentrated on recently identified natural products and derivatives as COX-2 inhibitors, the characteristics of their structural core scaffolds, their anti-inflammatory effects, molecular mechanisms for enzymatic inhibition, and related structure-activity relationships. According to the structural features, the natural COX-2 inhibitors were mainly divided into the following categories: natural phenols, flavonoids, stilbenes, terpenoids, quinones, and alkaloids. Apart from the anti-inflammatory activities, a few dietary COX-2 inhibitors from nature origin also exhibited chemopreventive effects by targeting COX-2-mediated carcinogenesis. The utilization of these natural remedies in future cancer prevention was also discussed. In all, the survey on the characterized COX-2 inhibitors from natural sources paves the way for the further development of more potent and selective COX-2 inhibitors in the future.
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Affiliation(s)
- Jiahua Cui
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jinping Jia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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16
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Hughes CC. Chemical labeling strategies for small molecule natural product detection and isolation. Nat Prod Rep 2021; 38:1684-1705. [PMID: 33629087 DOI: 10.1039/d0np00034e] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Covering: Up to 2020.It is widely accepted that small molecule natural products (NPs) evolved to carry out a particular ecological function and that these finely-tuned molecules can sometimes be appropriated for the treatment of disease in humans. Unfortunately, for the natural products chemist, NPs did not evolve to possess favorable physicochemical properties needed for HPLC-MS analysis. The process known as derivatization, whereby an NP in a complex mixture is decorated with a nonnatural moiety using a derivatizing agent (DA), arose from this sad state of affairs. Here, NPs are freed from the limitations of natural functionality and endowed, usually with some degree of chemoselectivity, with additional structural features that make HPLC-MS analysis more informative. DAs that selectively label amines, carboxylic acids, alcohols, phenols, thiols, ketones, and aldehydes, terminal alkynes, electrophiles, conjugated alkenes, and isocyanides have been developed and will be discussed here in detail. Although usually employed for targeted metabolomics, chemical labeling strategies have been effectively applied to uncharacterized NP extracts and may play an increasing role in the detection and isolation of certain classes of NPs in the future.
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Affiliation(s)
- Chambers C Hughes
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany 72076.
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17
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Li J, Chen C, Zhang W, Bi J, Yang G, Li E. Salsalate reverses metabolic disorders in a mouse model of non-alcoholic fatty liver disease through AMPK activation and caspase-6 activity inhibition. Basic Clin Pharmacol Toxicol 2020; 128:394-409. [PMID: 33200549 DOI: 10.1111/bcpt.13535] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/26/2020] [Accepted: 11/11/2020] [Indexed: 02/06/2023]
Abstract
Salsalate, an ester formed by 2 salicylic acid molecules, has beneficial effect against metabolic disorders in clinical trials and in animal studies. This study focused on the mechanistic aspects of salsalate activity against non-alcoholic fatty liver disease (NAFLD). Using high-fat diet (HFD) fed mice, we showed that salsalate treatment decreased body-weight gains, reduced white adipose tissue mass and improved glycaemic control. Mice in salsalate-treated group also had reduced obese adipose tissue and hepatic macrophage infiltration and inflammation and adipogenesis gene expression. Histology analysis revealed predominant decreases in hepatosteatosis, including both macrovesicular and microvesicular steatoses. The treatment reversed AMPK activity repression that was accompanied by reduced caspase-6 activity and cleavage. Enzymatic assay and cell culture studies showed that salsalate promoted AMPK activation by directly activating AMPK. This study links salsalate effect against metabolic disorders to its activity on reversion of AMPK repression in NAFLD mice and on suppression of adipogenic gene induction.
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Affiliation(s)
- Jingjing Li
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Changmai Chen
- School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Wei Zhang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Jing'ai Bi
- Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Guang Yang
- Nanjing Children's Hospital, Nanjing Medical University, Nanjing, China
| | - Erguang Li
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
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18
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Ward JL, Wu Y, Harflett C, Onafuye H, Corol D, Lomax C, Macalpine WJ, Cinatl J, Wass MN, Michaelis M, Beale MH. Miyabeacin: A new cyclodimer presents a potential role for willow in cancer therapy. Sci Rep 2020; 10:6477. [PMID: 32296088 PMCID: PMC7160102 DOI: 10.1038/s41598-020-63349-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 03/27/2020] [Indexed: 02/08/2023] Open
Abstract
Willow (Salix spp.) is well known as a source of medicinal compounds, the most famous being salicin, the progenitor of aspirin. Here we describe the isolation, structure determination, and anti-cancer activity of a cyclodimeric salicinoid (miyabeacin) from S. miyabeana and S. dasyclados. We also show that the capability to produce such dimers is a heritable trait and how variation in structures of natural miyabeacin analogues is derived via cross-over Diels-Alder reactions from pools of ortho-quinol precursors. These transient ortho-quinols have a role in the, as yet uncharacterised, biosynthetic pathways around salicortin, the major salicinoid of many willow genotypes.
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Affiliation(s)
- Jane L Ward
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK.
| | - Yanqi Wu
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
- Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, P. R. China
| | - Claudia Harflett
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Hannah Onafuye
- Industrial Biotechnology Centre and School of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, UK
| | - Delia Corol
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Charlotte Lomax
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - William J Macalpine
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Jindrich Cinatl
- Institute for Medical Virology, Goethe-University, Frankfurt am Main, Germany
| | - Mark N Wass
- Industrial Biotechnology Centre and School of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, UK
| | - Martin Michaelis
- Industrial Biotechnology Centre and School of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, UK
| | - Michael H Beale
- Computational and Analytical Sciences Department, Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK.
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19
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Zhang X, Cui X, Jin X, Han F, Wang J, Yang X, Xu J, Shan C, Gao Z, Li X, Zuo M, Yang J, Chang B. Preventive Role of Salsalate in Diabetes Is Associated With Reducing Intestinal Inflammation Through Improvement of Gut Dysbiosis in ZDF Rats. Front Pharmacol 2020; 11:300. [PMID: 32265702 PMCID: PMC7096544 DOI: 10.3389/fphar.2020.00300] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 02/28/2020] [Indexed: 12/21/2022] Open
Abstract
A safe and effective approach is needed to prevent and reduce the incidence of diabetes worldwide. The hypoglycemic efficacy of salicylic acid (salsalate, SAL), which has anti-inflammatory properties, has been empirically demonstrated in studies conducted at the Joslin Diabetes Center and elsewhere. Here, we investigated the potential role of SAL in preventing the onset of diabetes in Zucker diabetic fatty (ZDF) rats and attempted to elucidate its underlying mechanisms. ZDF and Zucker lean (ZL) rats were administered a high-fat diet with or without SAL intervention, and their relative rates of diabetes were compared. Our results showed that all rats in the placebo group developed diabetes, whereas only 10% of the SAL-treated rats presented with impaired glucose tolerance (IGT). None of the latter progressed to diabetes. Relative to the untreated rats, SAL lowered plasma glucagon and insulin while improving insulin sensitivity and β-cell function. SAL may protect against hyperglycemia by increasing the microbial diversity, ameliorating gut dysbiosis, restoring intestinal epithelial cell connections, inhibiting endotoxin influx into the blood, and attenuating inflammation. Together, these findings suggest that SAL may be a candidate prophylactic therapy against diabetes. The protective role of SAL may be attributed to its ability to reduce intestinal inflammation and improve gut dysbiosis.
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Affiliation(s)
- Xinrong Zhang
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Xiao Cui
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Xiaofang Jin
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Fei Han
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Jingyu Wang
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Xiaoyun Yang
- Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Jie Xu
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Chunyan Shan
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Zhongai Gao
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Xiaochen Li
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Minxia Zuo
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Juhong Yang
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
| | - Baocheng Chang
- NHC Key Laboratory of Hormones and Development, Tianjin Medical University, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin, China
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20
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Salicylate suppresses the oncogenic hyaluronan network in metastatic breast cancer cells. Matrix Biol Plus 2020; 6-7:100031. [PMID: 33543028 PMCID: PMC7852211 DOI: 10.1016/j.mbplus.2020.100031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 01/05/2023] Open
Abstract
The oncogenic role of hyaluronan in several aspects of tumor biology has been well established. Recent studies by us and others suggest that inhibition of hyaluronan synthesis could represent an emerging therapeutic approach with significant clinical relevance in controlling different breast cancer subtypes, including triple-negative breast cancer. Epidemiological and preclinical studies have revealed the therapeutic potential of aspirin (acetyl salicylate), a classical anti-inflammatory drug, in patients with cancer. However, the underlying molecular mechanisms remain unknown. The present study demonstrates that salicylate, a break down product of aspirin in vivo, alters the organization of hyaluronan matrices by affecting the expression levels of hyaluronan synthesizing (HAS1, 2, 3) and degrading (HYAL-1, -2) enzymes, and that of hyaluronan receptor CD44. In particular, salicylate was found to potently activate AMPK, a kinase known to inhibit HAS2 activity, and caused a dose-dependent decrease of cell associated (intracellular and membrane-bound) as well as secreted hyaluronan, followed by the down-regulation of HAS2 and the induction of HYAL-2 and CD44 in metastatic breast cancer cells. These salicylate-mediated effects were associated with the redistribution of CD44 and actin cytoskeleton that resulted in a less motile cell phenotype. Interestingly, salicylate inhibited metastatic breast cancer cell proliferation and growth by inducing cell growth arrest without signs of apoptosis as evidenced by the substantial decrease of cyclin D1 protein and the absence of cleaved caspase-3, respectively. Collectively, our study offers a possible direction for the development of new matrix-based targeted treatments of metastatic breast cancer subtypes via inhibition of hyaluronan, a pro-angiogenic, pro-inflammatory and tumor promoting glycosaminoglycan.
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21
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Effect on mortality of different routes of administration and loading dose of aspirin in patients with ST-segment elevation acute myocardial infarction treated with primary angioplasty. Coron Artery Dis 2020; 31:348-353. [PMID: 31917691 DOI: 10.1097/mca.0000000000000840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND Aspirin is the cornerstone of the anti-platelet therapy during the acute phase of ST-segment elevation myocardial infarction (STEMI), and it can be administrated orally or intravenously. The oral loading dose of aspirin is well characterized, whereas there are little data on the optimal intravenous (IV) loading dose. AIM To confirm if the mortality of patients treated with a loading dose of IV aspirin was comparable to that of patients treated with the most usual aspirin per os. PATIENTS AND METHODS We analyzed the overall mortality during hospitalization and at 1 year follow-up among 756 consecutive patients with STEMI. Four hundred seventy-eight (63.2%) patients received per os and 278 (36.8%) IV aspirin. We divided the 278 patients of the IV aspirin group into two subgroups, based on the median value of the dose of aspirin used as a load. RESULTS The per os aspirin group took 234 ± 138 mg of aspirin per os at the first medical contact; the IV low-dose group 194 ± 87 mg, and the IV high-dose group 483 ± 194 mg of IV aspirin. No differences were observed in mortality rate after 1-year of follow-up. In-hospital mortality resulted significantly higher (9.3%) in the IV high-dose group respect to the IV low-dose one (5.0%) and per os aspirin group (6.0%) (P < 0.01 for both). CONCLUSION In this retrospective study, high dose IV aspirin loading in STEMI increased intra-hospital mortality. Further study is necessary to define the optimal dose of intravenous aspirin in STEMI.
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22
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Analysis of exposure margins in developmental toxicity studies for detection of human teratogens. Regul Toxicol Pharmacol 2019; 105:62-68. [DOI: 10.1016/j.yrtph.2019.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 03/19/2019] [Accepted: 04/07/2019] [Indexed: 12/17/2022]
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23
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Pietrocola F, Castoldi F, Markaki M, Lachkar S, Chen G, Enot DP, Durand S, Bossut N, Tong M, Malik SA, Loos F, Dupont N, Mariño G, Abdelkader N, Madeo F, Maiuri MC, Kroemer R, Codogno P, Sadoshima J, Tavernarakis N, Kroemer G. Aspirin Recapitulates Features of Caloric Restriction. Cell Rep 2019; 22:2395-2407. [PMID: 29490275 PMCID: PMC5848858 DOI: 10.1016/j.celrep.2018.02.024] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 12/20/2017] [Accepted: 02/06/2018] [Indexed: 01/04/2023] Open
Abstract
The age-associated deterioration in cellular and organismal functions associates with dysregulation of nutrient-sensing pathways and disabled autophagy. The reactivation of autophagic flux may prevent or ameliorate age-related metabolic dysfunctions. Non-toxic compounds endowed with the capacity to reduce the overall levels of protein acetylation and to induce autophagy have been categorized as caloric restriction mimetics (CRMs). Here, we show that aspirin or its active metabolite salicylate induce autophagy by virtue of their capacity to inhibit the acetyltransferase activity of EP300. While salicylate readily stimulates autophagic flux in control cells, it fails to further increase autophagy levels in EP300-deficient cells, as well as in cells in which endogenous EP300 has been replaced by salicylate-resistant EP300 mutants. Accordingly, the pro-autophagic activity of aspirin and salicylate on the nematode Caenorhabditis elegans is lost when the expression of the EP300 ortholog cpb-1 is reduced. Altogether, these findings identify aspirin as an evolutionary conserved CRM. The aspirin metabolite, salicylate, competitively inhibits EP300 acetyltransferase EP300 inhibition is epistatic to autophagy induction by salicylate Aspirin triggers cardioprotective mitophagy in mice and nematodes
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Affiliation(s)
- Federico Pietrocola
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France
| | - Francesca Castoldi
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France; Université Paris-Sud/Paris XI, Faculté de Médecine, Kremlin-Bicêtre, France, Paris, France; Sotio a.c., Prague, Czech Republic
| | - Maria Markaki
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion 70013, Crete, Greece
| | - Sylvie Lachkar
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France
| | - Guo Chen
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France
| | - David P Enot
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Sylvere Durand
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Noelie Bossut
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Mingming Tong
- Department of Cell Biology and Molecular Medicine, Rutgers-New Jersey Medical School, Newark, NJ, USA
| | - Shoaib A Malik
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France; Department of Biochemistry, Sargodha Medical College, Sargodha, Pakistan
| | - Friedemann Loos
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France
| | - Nicolas Dupont
- Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Institut Necker-Enfants Malades (INEM), Paris, France; INSERM, U1151, Paris, France; CNRS, UMR8253, Paris, France
| | - Guillermo Mariño
- Departamento de Biología Fundamental, Universidad de Oviedo, Fundación para la Investigación Sanitaria del Principado de Asturias (FINBA), Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (IISPA), Oviedo, Spain
| | - Nejma Abdelkader
- Scientific Computing, LGCR, Sanofi R&D, 94403 Vitry-sur-Seine, France
| | - Frank Madeo
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Humboldtstraße 50, 8010 Graz, Austria; BioTechMed-Graz, Humboldtstraße 50, 8010 Graz, Austria
| | - Maria Chiara Maiuri
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France
| | - Romano Kroemer
- Structure Design & Informatics, LGCR, Sanofi R&D, 94403 Vitry-sur-Seine, France
| | - Patrice Codogno
- Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Institut Necker-Enfants Malades (INEM), Paris, France; INSERM, U1151, Paris, France; CNRS, UMR8253, Paris, France
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Rutgers-New Jersey Medical School, Newark, NJ, USA
| | - Nektarios Tavernarakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion 70013, Crete, Greece; Department of Basic Sciences, Faculty of Medicine, University of Crete, Heraklion 70013, Crete, Greece
| | - Guido Kroemer
- Gustave Roussy Cancer Campus, Villejuif, France; INSERM, U1138, Paris, France; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Université Pierre et Marie Curie, Paris, France; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France; Karolinska Institute, Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden.
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24
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Beirnaert C, Peeters L, Meysman P, Bittremieux W, Foubert K, Custers D, Van der Auwera A, Cuykx M, Pieters L, Covaci A, Laukens K. Using Expert Driven Machine Learning to Enhance Dynamic Metabolomics Data Analysis. Metabolites 2019; 9:metabo9030054. [PMID: 30897797 PMCID: PMC6468718 DOI: 10.3390/metabo9030054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/05/2019] [Accepted: 03/18/2019] [Indexed: 11/16/2022] Open
Abstract
Data analysis for metabolomics is undergoing rapid progress thanks to the proliferation of novel tools and the standardization of existing workflows. As untargeted metabolomics datasets and experiments continue to increase in size and complexity, standardized workflows are often not sufficiently sophisticated. In addition, the ground truth for untargeted metabolomics experiments is intrinsically unknown and the performance of tools is difficult to evaluate. Here, the problem of dynamic multi-class metabolomics experiments was investigated using a simulated dataset with a known ground truth. This simulated dataset was used to evaluate the performance of tinderesting, a new and intuitive tool based on gathering expert knowledge to be used in machine learning. The results were compared to EDGE, a statistical method for time series data. This paper presents three novel outcomes. The first is a way to simulate dynamic metabolomics data with a known ground truth based on ordinary differential equations. This method is made available through the MetaboLouise R package. Second, the EDGE tool, originally developed for genomics data analysis, is highly performant in analyzing dynamic case vs. control metabolomics data. Third, the tinderesting method is introduced to analyse more complex dynamic metabolomics experiments. This tool consists of a Shiny app for collecting expert knowledge, which in turn is used to train a machine learning model to emulate the decision process of the expert. This approach does not replace traditional data analysis workflows for metabolomics, but can provide additional information, improved performance or easier interpretation of results. The advantage is that the tool is agnostic to the complexity of the experiment, and thus is easier to use in advanced setups. All code for the presented analysis, MetaboLouise and tinderesting are freely available.
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Affiliation(s)
- Charlie Beirnaert
- Adrem Data Lab, Department of Mathematics and Computer Science, University of Antwerp, 2000 Antwerp, Belgium.
| | - Laura Peeters
- Adrem Data Lab, Department of Mathematics and Computer Science, University of Antwerp, 2000 Antwerp, Belgium.
| | - Pieter Meysman
- Adrem Data Lab, Department of Mathematics and Computer Science, University of Antwerp, 2000 Antwerp, Belgium.
| | - Wout Bittremieux
- Adrem Data Lab, Department of Mathematics and Computer Science, University of Antwerp, 2000 Antwerp, Belgium.
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA.
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Deborah Custers
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Anastasia Van der Auwera
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Matthias Cuykx
- Toxicological Center, Department of Pharmaceutical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Adrian Covaci
- Toxicological Center, Department of Pharmaceutical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Kris Laukens
- Adrem Data Lab, Department of Mathematics and Computer Science, University of Antwerp, 2000 Antwerp, Belgium.
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25
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Prasher P, Mudila H, Sharma M, Khati B. Developmental perspectives of the drugs targeting enzyme-instigated inflammation: a mini review. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02315-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Bashir AIJ, Kankipati CS, Jones S, Newman RM, Safrany ST, Perry CJ, Nicholl ID. A novel mechanism for the anticancer activity of aspirin and salicylates. Int J Oncol 2019; 54:1256-1270. [PMID: 30720135 PMCID: PMC6411351 DOI: 10.3892/ijo.2019.4701] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 12/18/2018] [Indexed: 02/07/2023] Open
Abstract
Epidemiological studies indicate that long‑term aspirin usage reduces the incidence of colorectal cancer (CRC) and may protect against other non‑CRC associated adenocarcinomas, including oesophageal cancer. A number of hypotheses have been proposed with respect to the molecular action of aspirin and other non‑steroidal anti‑inflammatory drugs in cancer development. The mechanism by which aspirin exhibits toxicity to CRC has been previously investigated by synthesising novel analogues and derivatives of aspirin in an effort to identify functionally significant moieties. Herein, an early effect of aspirin and aspirin‑like analogues against the SW480 CRC cell line was investigated, with a particular focus on critical molecules in the epidermal growth factor (EGF) pathway. The present authors proposed that aspirin, diaspirin and analogues, and diflunisal (a salicylic acid derivative) may rapidly perturb EGF and EGF receptor (EGFR) internalisation. Upon longer incubations, the diaspirins and thioaspirins may inhibit EGFR phosphorylation at Tyr1045 and Tyr1173. It was additionally demonstrated, using a qualitative approach, that EGF internalisation in the SW480 cell line may be directed to endosomes by fumaryldiaspirin using early endosome antigen 1 as an early endosomal marker and that EGF internalisation may also be perturbed in oesophageal cell lines, suggestive of an effect not only restricted to CRC cells. Taken together and in light of our previous findings that the aspirin‑like analogues can affect cyclin D1 expression and nuclear factor‑κB localisation, it was hypothesized that aspirin and aspirin analogues significantly and swiftly perturb the EGFR axis and that the protective activity of aspirin may in part be explained by perturbed EGFR internalisation and activation. These findings may also have implications in understanding the inhibitory effect of aspirin and salicylates on wound healing, given the critical role of EGF in the response to tissue trauma.
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Affiliation(s)
- Asma'u I J Bashir
- Department of Biomedical Science and Physiology, School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Chandra S Kankipati
- Department of Biomedical Science and Physiology, School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Sarah Jones
- School of Pharmacy, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Robert M Newman
- School of Mathematics and Computer Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | | | - Christopher J Perry
- School of Pharmacy, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Iain D Nicholl
- Department of Biomedical Science and Physiology, School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
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27
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Serhan CN, Chiang N, Dalli J. New pro-resolving n-3 mediators bridge resolution of infectious inflammation to tissue regeneration. Mol Aspects Med 2018; 64:1-17. [PMID: 28802833 PMCID: PMC5832503 DOI: 10.1016/j.mam.2017.08.002] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 08/07/2017] [Indexed: 12/16/2022]
Abstract
While protective, the acute inflammatory response when uncontrolled can lead to further tissue damage and chronic inflammation that is now widely recognized to play important roles in many commonly occurring diseases, such as cardiovascular disease, neurodegenerative diseases, metabolic syndrome, and many other diseases of significant public health concern. The ideal response to initial challenges of the host is complete resolution of the acute inflammatory response, which is now recognized to be a biosynthetically active process governed by specialized pro-resolving mediators (SPM). These chemically distinct families include lipoxins, resolvins, protectins and maresins that are biosynthesized from essential fatty acids. The biosynthesis and complete stereochemical assignments of the major SPM are established, and new profiling procedures have recently been introduced to document the activation of these pathways in vivo with isolated cells and in human tissues. The active resolution phase leads to tissue regeneration, where we've recently identified new molecules that communicate during resolution of inflammation to activate tissue regeneration in model organisms. This review presents an update on the documentation of the roles of SPMs and the biosynthesis and structural elucidation of novel mediators that stimulate tissue regeneration, coined conjugates in tissue regeneration. The identification and actions of the three families, maresin conjugates in tissue regeneration (MCTR), protectin conjugates in tissue regeneration (PCTR), and resolvin conjugates in tissue regeneration (RCTR), are reviewed here. The identification, structural elucidation and the pathways and biosynthesis of these new mediators in tissue regeneration demonstrate the host capacity to protect from collateral tissue damage, stimulate clearance of bacteria and debris, and promote tissue regeneration via endogenous pathways and molecules in the resolution metabolome.
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Affiliation(s)
- Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Nan Chiang
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jesmond Dalli
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
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28
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Akkad S, Serpell CJ. Degradable Polymers and Nanoparticles Built from Salicylic Acid. Macromol Rapid Commun 2018; 39:e1800182. [PMID: 29786901 DOI: 10.1002/marc.201800182] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/23/2018] [Indexed: 12/19/2022]
Abstract
As more evidence emerges supporting the possibility that nonsteroidal anti-inflammatory drugs, especially aspirin (acetyl salicylic acid), might have a role in the prevention and management of certain types of cancer, there have been several attempts to fabricate salicylic acid-based polymers that can be employed in the targeted therapy of tumors. The primary disadvantage so far has been in use of nontherapeutic polymeric backbones that constitute the majority of the therapeutic particle's size. The focus of this research is the creation of a biodegradable polymer consisting only of salicylic acid, and its use as the main building block in targeted nanotherapeutics that would consequently provide both high local dose and sustained release of the active moiety. This work demonstrates the synthesis and degradation of polysalicylates, and modulation of their size and hydrolytic stability through the formation of nanostructures.
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Affiliation(s)
- Saeed Akkad
- School of Physical Sciences, Ingram Building, University of Kent, Canterbury, CT2 7NH, UK
| | - Christopher J Serpell
- School of Physical Sciences, Ingram Building, University of Kent, Canterbury, CT2 7NH, UK
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29
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Baroni MD, Colombo S, Martegani E. Antagonism between salicylate and the cAMP signal controls yeast cell survival and growth recovery from quiescence. MICROBIAL CELL (GRAZ, AUSTRIA) 2018; 5:344-356. [PMID: 29992130 PMCID: PMC6035838 DOI: 10.15698/mic2018.07.640] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 03/14/2018] [Indexed: 12/18/2022]
Abstract
Aspirin and its main metabolite salicylate are promising molecules in preventing cancer and metabolic diseases. S. cerevisiae cells have been used to study some of their effects: (i) salicylate induces the reversible inhibition of both glucose transport and the biosyntheses of glucose-derived sugar phosphates, (ii) Aspirin/salicylate causes apoptosis associated with superoxide radical accumulation or early cell necrosis in MnSOD-deficient cells growing in ethanol or in glucose, respectively. So, treatment with (acetyl)-salicylic acid can alter the yeast metabolism and is associated with cell death. We describe here the dramatic effects of salicylate on cellular control of the exit from a quiescence state. The growth recovery of long-term stationary phase cells was strongly inhibited in the presence of salicylate, to a degree proportional to the drug concentration. At high salicylate concentration, growth reactivation was completely repressed and associated with a dramatic loss of cell viability. Strikingly, both of these phenotypes were fully suppressed by increasing the cAMP signal without any variation of the exponential growth rate. Upon nutrient exhaustion, salicylate induced a premature lethal cell cycle arrest in the budded-G2/M phase that cannot be suppressed by PKA activation. We discuss how the dramatic antagonism between cAMP and salicylate could be conserved and impinge common targets in yeast and humans. Targeting quiescence of cancer cells with stem-like properties and their growth recovery from dormancy are major challenges in cancer therapy. If mechanisms underlying cAMP-salicylate antagonism will be defined in our model, this might have significant therapeutic implications.
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Affiliation(s)
| | - Sonia Colombo
- Dipartimento di Biotecnologie e Bioscienze, Università Milano Bicocca, 20126 Milano, Italy
| | - Enzo Martegani
- Dipartimento di Biotecnologie e Bioscienze, Università Milano Bicocca, 20126 Milano, Italy
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30
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Foong NZE, Yii ACA, Hsu AAL. Severe life-threatening asthma precipitated by a topical nonsteroidal anti-inflammatory drug. Ann Allergy Asthma Immunol 2018; 120:535-536. [PMID: 29573959 DOI: 10.1016/j.anai.2017.12.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 12/15/2017] [Accepted: 12/26/2017] [Indexed: 10/17/2022]
Affiliation(s)
- Nathanael Z E Foong
- Department of Respiratory and Critical Care Medicine, Singapore General Hospital, Singapore
| | - Anthony C A Yii
- Department of Respiratory Medicine, Changi General Hospital, Singapore
| | - Anne A L Hsu
- Department of Respiratory and Critical Care Medicine, Singapore General Hospital, Singapore.
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31
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Noleto-Dias C, Ward JL, Bellisai A, Lomax C, Beale MH. Salicin-7-sulfate: A new salicinoid from willow and implications for herbal medicine. Fitoterapia 2018; 127:166-172. [PMID: 29447984 PMCID: PMC5999357 DOI: 10.1016/j.fitote.2018.02.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/08/2018] [Accepted: 02/10/2018] [Indexed: 12/21/2022]
Abstract
Willow (Salix sp.) is a historically well-known herbal medicine that provided the lead compound (salicin) for the discovery of aspirin, one of the most successful plant derived drugs in human medicine. During a metabolomics screen of 86 Salix species contained in the UK National Willow Collection, we have discovered, isolated and fully characterised a new natural salicinoid – salicin-7-sulfate. This molecule may have important human pharmacological actions that need to be considered in determining the efficacy and safety of willow herbal medicines.
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Affiliation(s)
- Clarice Noleto-Dias
- Department of Computational and Analytical Sciences, Rothamsted Research, West Common, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Jane L Ward
- Department of Computational and Analytical Sciences, Rothamsted Research, West Common, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Alice Bellisai
- Department of Computational and Analytical Sciences, Rothamsted Research, West Common, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Charlotte Lomax
- Department of Computational and Analytical Sciences, Rothamsted Research, West Common, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Michael H Beale
- Department of Computational and Analytical Sciences, Rothamsted Research, West Common, Harpenden, Hertfordshire AL5 2JQ, UK.
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32
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Hardie DG. Keeping the home fires burning: AMP-activated protein kinase. J R Soc Interface 2018; 15:20170774. [PMID: 29343628 PMCID: PMC5805978 DOI: 10.1098/rsif.2017.0774] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 12/11/2017] [Indexed: 12/20/2022] Open
Abstract
Living cells obtain energy either by oxidizing reduced compounds of organic or mineral origin or by absorbing light. Whichever energy source is used, some of the energy released is conserved by converting adenosine diphosphate (ADP) to adenosine triphosphate (ATP), which are analogous to the chemicals in a rechargeable battery. The energy released by the conversion of ATP back to ADP is used to drive most energy-requiring processes, including cell growth, cell division, communication and movement. It is clearly essential to life that the production and consumption of ATP are always maintained in balance, and the AMP-activated protein kinase (AMPK) is one of the key cellular regulatory systems that ensures this. In eukaryotic cells (cells with nuclei and other internal membrane-bound structures, including human cells), most ATP is produced in mitochondria, which are thought to have been derived by the engulfment of oxidative bacteria by a host cell not previously able to use molecular oxygen. AMPK is activated by increasing AMP or ADP (AMP being generated from ADP whenever ADP rises) coupled with falling ATP. Relatives of AMPK are found in essentially all eukaryotes, and it may have evolved to allow the host cell to monitor the output of the newly acquired mitochondria and step their ATP production up or down according to the demand. Structural studies have illuminated how AMPK achieves the task of detecting small changes in AMP and ADP, despite the presence of much higher concentrations of ATP. Recently, it has been shown that AMPK can also sense the availability of glucose, the primary carbon source for most eukaryotic cells, via a mechanism independent of changes in AMP or ADP. Once activated by energy imbalance or glucose lack, AMPK modifies many target proteins by transferring phosphate groups to them from ATP. By this means, numerous ATP-producing processes are switched on (including the production of new mitochondria) and ATP-consuming processes are switched off, thus restoring energy homeostasis. Drugs that modulate AMPK have great potential in the treatment of metabolic disorders such as obesity and Type 2 diabetes, and even cancer. Indeed, some existing drugs such as metformin and aspirin, which were derived from traditional herbal remedies, appear to work, in part, by activating AMPK.
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Affiliation(s)
- D Grahame Hardie
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
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33
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Davidson EP, Coppey LJ, Shevalye H, Obrosov A, Yorek MA. Effect of Dietary Content of Menhaden Oil with or without Salsalate on Neuropathic Endpoints in High-Fat-Fed/Low-Dose Streptozotocin-Treated Sprague Dawley Rats. J Diabetes Res 2018; 2018:2967127. [PMID: 30057911 PMCID: PMC6051246 DOI: 10.1155/2018/2967127] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 06/03/2018] [Indexed: 12/18/2022] Open
Abstract
In this study, we wanted to extend our investigation of the efficacy of fish oil with or without salsalate on vascular and neural complications using a type 2 diabetic rat model. Four weeks after the onset of hyperglycemia, diabetic rats were treated via the diet with 3 different amounts of menhaden oil with or without salsalate for 12 weeks. Afterwards, vascular reactivity of epineurial arterioles and neuropathy-related endpoints were examined. The addition of salsalate to high-fat diets enriched with 10% or 25% kcal of menhaden oil protected vascular reactivity to acetylcholine and calcium gene-related peptide, motor and sensory nerve conduction velocity, thermal nociception, intraepidermal nerve fiber density, and cornea sensitivity to a greater extent than 10% or 25% menhaden oil alone. Vascular and neural function was maximally protected with diet containing 45% kcal as menhaden oil, and adding salsalate did not provide any additional benefit. Salsalate alone in the high-fat diet of diabetic rats provided minimal protection/improvement of vascular and neural dysfunction. These studies imply that dietary salsalate in combination with lower amounts of menhaden oil can provide greater benefit toward diabetes-induced vascular and neural impairment than menhaden oil alone.
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Affiliation(s)
- Eric P. Davidson
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Lawrence J. Coppey
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Hanna Shevalye
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Alexander Obrosov
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Mark A. Yorek
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
- Department of Veterans Affairs Iowa City Health Care System, Iowa City, IA 52246, USA
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA 52242, USA
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34
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Rowsey TG, Karamichos D. The role of lipids in corneal diseases and dystrophies: a systematic review. Clin Transl Med 2017; 6:30. [PMID: 28782089 PMCID: PMC5552625 DOI: 10.1186/s40169-017-0158-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 07/26/2017] [Indexed: 02/06/2023] Open
Abstract
Corneal diseases are an extensive cause of blindness worldwide and continue to persist as a challenging public health concern. Recently, various lipid-based therapies have been advocated for the modulation of corneal diseases; however, the number of studies is still very limited. Here we focus on developments and challenges on lipid-based therapies for dry eye disease, diabetic neuropathy, and Fuchs' endothelial corneal dystrophy. All three diseases are highly prevalent conditions and involve corneal stress and inflammation. Lipid-based therapeutics discussed includes cyclooxygenase inhibitors, essential fatty acids, and resolvin analogs. Lipids also show increasing promise as biomarkers of disease and are explored in this review.
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Affiliation(s)
- Tyler G. Rowsey
- University of Oklahoma, College of Medicine, Norman, OK USA
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Dimitrios Karamichos
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
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35
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Cox D, Fitzgerald DJ. Lack of Bioequivalence Among Low-dose, Enteric-coated Aspirin Preparations. Clin Pharmacol Ther 2017; 103:1047-1051. [PMID: 28905988 DOI: 10.1002/cpt.874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/20/2017] [Accepted: 08/26/2017] [Indexed: 11/06/2022]
Abstract
Low-dose aspirin (75 mg or 81 mg) is considered to be the lowest effective dose for cardiovascular protection; however, the use of enteric preparations has created a source of variability in bioavailability. As part of regulatory requirements, we carried out bioequivalence tests for two 75 mg enteric-coated aspirin preparations (Caprin and Protek) using Nu-Seals 75 mg aspirin as the comparator. The primary endpoint was serum thromboxane levels after 14 days of treatment. Protek failed to meet bioequivalence, as it was significantly less effective than Nu-Seals. In contrast, Caprin was not bioequivalent with Nu-Seals but as it was more effective it was granted approval. However, 75 mg plain aspirin was found to be more effective than Nu-Seals at inhibiting serum thromboxane production. Thus, there is significant variation in the ability of low-dose aspirin preparations to inhibit serum thromboxane production.
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Affiliation(s)
- Dermot Cox
- Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Desmond J Fitzgerald
- Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
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36
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Speirs C, Williams JJL, Riches K, Salt IP, Palmer TM. Linking energy sensing to suppression of JAK-STAT signalling: A potential route for repurposing AMPK activators? Pharmacol Res 2017; 128:88-100. [PMID: 29037480 DOI: 10.1016/j.phrs.2017.10.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/12/2017] [Accepted: 10/12/2017] [Indexed: 02/07/2023]
Abstract
Exaggerated Janus kinase-signal transducer and activator of transcription (JAK-STAT) signalling is key to the pathogenesis of pro-inflammatory disorders, such as rheumatoid arthritis and cardiovascular diseases. Mutational activation of JAKs is also responsible for several haematological malignancies, including myeloproliferative neoplasms and acute lymphoblastic leukaemia. Accumulating evidence links adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK), an energy sensor and regulator of organismal and cellular metabolism, with the suppression of immune and inflammatory processes. Recent studies have shown that activation of AMPK can limit JAK-STAT-dependent signalling pathways via several mechanisms. These novel findings support AMPK activation as a strategy for management of an array of disorders characterised by hyper-activation of the JAK-STAT pathway. This review discusses the pivotal role of JAK-STAT signalling in a range of disorders and how both established clinically used and novel AMPK activators might be used to treat these conditions.
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Affiliation(s)
- Claire Speirs
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Jamie J L Williams
- School of Pharmacy and Medical Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - Kirsten Riches
- School of Chemistry and Biosciences, University of Bradford, Bradford BD7 1DP, UK
| | - Ian P Salt
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Timothy M Palmer
- School of Pharmacy and Medical Sciences, University of Bradford, Bradford BD7 1DP, UK.
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Guigas B, Viollet B. Targeting AMPK: From Ancient Drugs to New Small-Molecule Activators. ACTA ACUST UNITED AC 2017; 107:327-350. [PMID: 27812986 DOI: 10.1007/978-3-319-43589-3_13] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The AMP-activated protein kinase (AMPK) is an evolutionary conserved and ubiquitously expressed serine/threonine kinase mainly acting as a key regulator of cellular energy homeostasis. AMPK is a heterotrimeric protein complex, consisting of a catalytic α subunit and two regulatory β and γ subunits, whose activity is tightly regulated by changes in adenine nucleotides and several posttranslational modifications. Once activated in response to energy deficit, AMPK concomitantly inhibits ATP-consuming anabolic processes and promotes ATP-generating catabolic pathways via direct phosphorylation of multiple downstream effectors, leading to restoration of cellular energy balance. A growing number of energy/nutrient-independent functions of AMPK are also regularly reported, progressively expanding its role to regulation of non-metabolic cellular processes. Historically, AMPK as a therapeutic target has attracted much of interest due to its potential impact on metabolic disorders, such as obesity and type 2 diabetes, but has also recently received considerable renewed attention in the framework of cancer studies, highlighting the persistent need for selective, reversible, potent, and tissue-specific activators. In this chapter, we review the most recent advances in the understanding of the mechanism(s) of action of the current portfolio of AMPK activators, including plant-derived natural compounds and newly discovered small-molecule agonists directly targeting various AMPK subunits.
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Affiliation(s)
- Bruno Guigas
- Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, The Netherlands.
- Department of Parasitology, Leiden University Medical Center, 9600, Postzone L40-Q, 2300 RC, Leiden, The Netherlands.
| | - Benoit Viollet
- INSERM, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, France
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38
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Kata D, Földesi I, Feher LZ, Hackler L, Puskas LG, Gulya K. A novel pleiotropic effect of aspirin: Beneficial regulation of pro- and anti-inflammatory mechanisms in microglial cells. Brain Res Bull 2017; 132:61-74. [PMID: 28528204 DOI: 10.1016/j.brainresbull.2017.05.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 04/27/2017] [Accepted: 05/12/2017] [Indexed: 02/07/2023]
Abstract
Aspirin, one of the most widely used non-steroidal anti-inflammatory drugs, has extensively studied effects on the cardiovascular system. To reveal further pleiotropic, beneficial effects of aspirin on a number of pro- and anti-inflammatory microglial mechanisms, we performed morphometric and functional studies relating to phagocytosis, pro- and anti-inflammatory cytokine production (IL-1β, tumor necrosis factor-α (TNF-α) and IL-10, respectively) and analyzed the expression of a number of inflammation-related genes, including those related to the above functions, in pure microglial cells. We examined the effects of aspirin (0.1mM and 1mM) in unchallenged (control) and bacterial lipopolysaccharide (LPS)-challenged secondary microglial cultures. Aspirin affected microglial morphology and functions in a dose-dependent manner as it inhibited LPS-elicited microglial activation by promoting ramification and the inhibition of phagocytosis in both concentrations. Remarkably, aspirin strongly reduced the pro-inflammatory IL-1β and TNF-α production, while it increased the anti-inflammatory IL-10 level in LPS-challenged cells. Moreover, aspirin differentially regulated the expression of a number of inflammation-related genes as it downregulated such pro-inflammatory genes as Nos2, Kng1, IL1β, Ptgs2 or Ccr1, while it upregulated some anti-inflammatory genes such as IL10, Csf2, Cxcl1, Ccl5 or Tgfb1. Thus, the use of aspirin could be beneficial for the prophylaxis of certain neurodegenerative disorders as it effectively ameliorates inflammation in the brain.
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Affiliation(s)
- Diana Kata
- Department of Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary.
| | - Imre Földesi
- Department of Laboratory Medicine, University of Szeged, Szeged, Hungary.
| | | | | | | | - Karoly Gulya
- Department of Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary.
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39
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Effect of hydrogen sulfide-releasing aspirin on esophageal and gastric mucosa compromised by stress injury. UKRAINIAN BIOCHEMICAL JOURNAL 2017. [DOI: 10.15407/ubj89.si01.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Oliverio M, Costanzo P, Nardi M, Calandruccio C, Salerno R, Procopio A. Tunable microwave-assisted method for the solvent-free and catalyst-free peracetylation of natural products. Beilstein J Org Chem 2016; 12:2222-2233. [PMID: 27829931 PMCID: PMC5082547 DOI: 10.3762/bjoc.12.214] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 09/29/2016] [Indexed: 12/03/2022] Open
Abstract
Background: The peracetylation is a simple chemical modification that can be used to enhance the bioavailability of hydrophilic products and to obtain safe and stable pro-drugs. Results: A totally green, solvent-free and catalyst-free microwave (MW)-assisted method for peracetylation of natural products such as oleuropein, alpha-hederin, quercetin and rutin is presented. By simply tuning the MW heating program, polyols with chemical diverse –OH groups or thermolabile functionalities can be peracetylated to improve the biological activity without degradation of the natural starting molecules. An evaluation of the process greenness was performed. Conclusion: The method is potentially universally applicable for green acetylation of hydrophilic biological molecules, potentially easily scalable for industrial applications, including pharmaceutical, cosmetic and food industry.
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Affiliation(s)
- Manuela Oliverio
- Department of Health Science, University Magna Graecia of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy; InterRegional Center for Food Safety and Health, University Magna Graecia of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy
| | - Paola Costanzo
- Department of Health Science, University Magna Graecia of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy
| | - Monica Nardi
- Department of Chemistry, Università della Calabria, Cubo 12C, 87036-Arcavacata di Rende (CS), Italy
| | - Carla Calandruccio
- Department of Health Science, University Magna Graecia of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy
| | - Raffaele Salerno
- InterRegional Center for Food Safety and Health, University Magna Graecia of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy
| | - Antonio Procopio
- Department of Health Science, University Magna Graecia of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy; InterRegional Center for Food Safety and Health, University Magna Graecia of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy
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Effect of Treatment with Salsalate, Menhaden Oil, Combination of Salsalate and Menhaden Oil, or Resolvin D1 of C57Bl/6J Type 1 Diabetic Mouse on Neuropathic Endpoints. J Nutr Metab 2016; 2016:5905891. [PMID: 27774316 PMCID: PMC5059581 DOI: 10.1155/2016/5905891] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/02/2016] [Accepted: 09/04/2016] [Indexed: 01/20/2023] Open
Abstract
Aims. In this study a streptozotocin induced type 1 diabetes mouse model was used to assess the effectiveness of salsalate, menhaden oil, the combination of salsalate and menhaden oil, or resolvin D1 on neuropathic endpoints. Materials and Methods. Changes in body weight, blood glucose, serum markers for triglycerides, free fatty acids, cholesterol, and resolvin D1, motor and sensory nerve conduction velocities and thermal sensitivity were assessed, as well as performing in vivo confocal microscopy of subepithelial corneal nerves and immunohistochemistry of nerves in the cornea and foot pad. Results. Diabetic animals failed to gain weight and had elevated blood glucose levels. Diabetic mice had slowed nerve conduction velocity, reduced innervation of the foot pad and cornea subepithelial and epithelial layers, and reduced thermal sensitivity. Monotherapy treatment with salsalate, menhaden oil, and resolvin D1 reduced the pathological signs of diabetic neuropathy. The combination of salsalate and menhaden oil also reduced signs of pathology and generated elevated plasma levels of resolvin D1 compared to other groups. Conclusions. Additional studies are needed to determine whether the combination of salsalate and menhaden oil may be more efficacious than monotherapy alone for the treatment of diabetic peripheral neuropathy.
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Klessig DF, Tian M, Choi HW. Multiple Targets of Salicylic Acid and Its Derivatives in Plants and Animals. Front Immunol 2016; 7:206. [PMID: 27303403 PMCID: PMC4880560 DOI: 10.3389/fimmu.2016.00206] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/12/2016] [Indexed: 01/04/2023] Open
Abstract
Salicylic acid (SA) is a critical plant hormone that is involved in many processes, including seed germination, root initiation, stomatal closure, floral induction, thermogenesis, and response to abiotic and biotic stresses. Its central role in plant immunity, although extensively studied, is still only partially understood. Classical biochemical approaches and, more recently, genome-wide high-throughput screens have identified more than two dozen plant SA-binding proteins (SABPs), as well as multiple candidates that have yet to be characterized. Some of these proteins bind SA with high affinity, while the affinity of others exhibit is low. Given that SA levels vary greatly even within a particular plant species depending on subcellular location, tissue type, developmental stage, and with respect to both time and location after an environmental stimulus such as infection, the presence of SABPs exhibiting a wide range of affinities for SA may provide great flexibility and multiple mechanisms through which SA can act. SA and its derivatives, both natural and synthetic, also have multiple targets in animals/humans. Interestingly, many of these proteins, like their plant counterparts, are associated with immunity or disease development. Two recently identified SABPs, high mobility group box protein and glyceraldehyde 3-phosphate dehydrogenase, are critical proteins that not only serve key structural or metabolic functions but also play prominent roles in disease responses in both kingdoms.
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Affiliation(s)
| | - Miaoying Tian
- Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa , Honolulu, HI , USA
| | - Hyong Woo Choi
- Boyce Thompson Institute, Cornell University , Ithaca, NY , USA
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Parker RB, Hu ZY, Meibohm B, Laizure SC. Effects of alcohol on human carboxylesterase drug metabolism. Clin Pharmacokinet 2016; 54:627-38. [PMID: 25511794 DOI: 10.1007/s40262-014-0226-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND OBJECTIVE Human carboxylesterase-1 (CES1) and human carboxylesterase-2 (CES2) play an important role in metabolizing many medications. Alcohol is a known inhibitor of these enzymes but the relative effect on CES1 and CES2 is unknown. The aim of this study was to determine the impact of alcohol on the metabolism of specific probes for CES1 (oseltamivir) and CES2 (aspirin). METHODS The effect of alcohol on CES1- and CES2-mediated probe drug hydrolysis was determined in vitro using recombinant human carboxylesterase. To characterize the in vivo effects of alcohol, healthy volunteers received each probe drug alone and in combination with alcohol followed by blood sample collection and determination of oseltamivir, aspirin, and respective metabolite pharmacokinetics. RESULTS Alcohol significantly inhibited oseltamivir hydrolysis by CES1 in vitro but did not affect aspirin metabolism by CES2. Alcohol increased the oseltamivir area under the plasma concentration-time curve (AUC) from 0 to 6 h (AUC0 → 6 h) by 27% (range 11-46%, p = 0.011) and decreased the metabolite/oseltamivir AUC0 → 6 h ratio by 34% (range 25-41%, p < 0.001). Aspirin pharmacokinetics were not affected by alcohol. CONCLUSIONS Alcohol significantly inhibited the hydrolysis of oseltamivir by CES1 both in vitro and in humans, but did not affect the hydrolysis of aspirin to salicylic acid by CES2. These results suggest that alcohol's inhibition of CES1 could potentially result in clinically significant drug interactions with other CES1-substrate drugs, but it is unlikely to significantly affect CES2-substrate drug hydrolysis.
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Affiliation(s)
- Robert B Parker
- Department of Clinical Pharmacy, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Room 346, Memphis, TN, 38163, USA,
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Pereira PAT, Bini D, Bovo F, Faccioli LH, Monteiro MC. Neutrophils influx and proinflammatory cytokines inhibition by sodium salicylate, unlike aspirin, in Candida albicans-induced peritonitis model. Folia Microbiol (Praha) 2016; 61:337-46. [PMID: 26762336 DOI: 10.1007/s12223-016-0443-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 01/04/2016] [Indexed: 01/15/2023]
Abstract
Sodium salicylate (NaS) and aspirin (ASA) are known to have a variety of effects on microorganisms, such as fungus (C. albicans and C. neoformans), moreover, it have effects in leukocyte adhesion and migration in vitro. In this report, we investigated the effect of ASA and NaS in neutrophil migration and cytokine production in C. albicans-induced peritonitis murine model. For this, mice were treated intraperitoneally (i.p) or orally (po) with NaS or ASA; after they were stimulated i.p. with C. albicans, the cellular migration was evaluated 24 h after stimulation. NaS, in mice treated i.p., unlike ASA, was able to inhibit the neutrophil migration and proinflammatory cytokine production induced by C. albicans, such as TNF-α, IL-1, IFN-γ, IL-12, and IL-10, but did not alter the IL-4 levels in these animals. However, the po treatment with same the dose of NaS or ASA did not affect the influx of this cell for inflammatory site. These results suggest that the NaS inhibits cellular migration and proinflammatory cytokine by different anti-inflammatory mechanism compared to ASA.
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Affiliation(s)
- Priscilla Aparecida Tártari Pereira
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, USP-SP, Ribeirão Preto, Brazil.,Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, USP-SP, Ribeirão Preto, Brazil
| | - Daniel Bini
- Departamento de Biologia, Universidade Estadual do Centro-Oeste/UNICENTRO, Guarapuava, PR, Brazil
| | - Fernanda Bovo
- Departamento de Anatomia Patológica, Universidade Federal do Paraná/PR, Paraná, Brazil
| | - Lucia Helena Faccioli
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, USP-SP, Ribeirão Preto, Brazil
| | - Marta Chagas Monteiro
- Pós-graduação em Ciências Farmacêuticas, Pós-graduação em Neurociências e Biologia celular, Faculdade de Farmácia, Instituto de Ciências da Saúde, Universidade Federal do Pará/UFPA, Rua Augusto Correia, Belém, PA, Brazil. .,Endereço: Laboratório de Microbiologia e Imunologia Clínica, Faculdade de Farmácia, Instituto de Ciências da Saúde, Universidade Federal do Pará/UFPA, Rua Augusto Correia, Belém, PA, Brazil.
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45
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Grahame Hardie D. Regulation of AMP-activated protein kinase by natural and synthetic activators. Acta Pharm Sin B 2016; 6:1-19. [PMID: 26904394 PMCID: PMC4724661 DOI: 10.1016/j.apsb.2015.06.002] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 05/28/2015] [Indexed: 12/11/2022] Open
Abstract
The AMP-activated protein kinase (AMPK) is a sensor of cellular energy status that is almost universally expressed in eukaryotic cells. While it appears to have evolved in single-celled eukaryotes to regulate energy balance in a cell-autonomous manner, during the evolution of multicellular animals its role has become adapted so that it also regulates energy balance at the whole body level, by responding to hormones that act primarily on the hypothalamus. AMPK monitors energy balance at the cellular level by sensing the ratios of AMP/ATP and ADP/ATP, and recent structural analyses of the AMPK heterotrimer that have provided insight into the complex mechanisms for these effects will be discussed. Given the central importance of energy balance in diseases that are major causes of morbidity or death in humans, such as type 2 diabetes, cancer and inflammatory disorders, there has been a major drive to develop pharmacological activators of AMPK. Many such activators have been described, and the various mechanisms by which these activate AMPK will be discussed. A particularly large class of AMPK activators are natural products of plants derived from traditional herbal medicines. While the mechanism by which most of these activate AMPK has not yet been addressed, I will argue that many of them may be defensive compounds produced by plants to deter infection by pathogens or grazing by insects or herbivores, and that many of them will turn out to be inhibitors of mitochondrial function.
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Affiliation(s)
- David Grahame Hardie
- Division of Cell Signaling & Immunology, College of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, UK
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46
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Shen C, Huang X, Li J, Zhang P, Li L, Zhang W, Hu T, Pappoe F, Huang J, Tang H. Pharmacokinetic and pharmacodynamic interactions of aspirin with warfarin in beagle dogs. Xenobiotica 2015; 46:530-41. [PMID: 26548565 DOI: 10.3109/00498254.2015.1096979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
1. Warfarin and aspirin are widely used in a wide spectrum of thromboembolic and atherothrombotic diseases. Despite the potential efficacy of warfarin-aspirin therapy, the safety and side effect of combined therapy remains unclear. 2. The aim of this study was to investigate the pharmacokinetic and pharmacodynamic interactions between warfarin and aspirin in beagles after single and multiple doses. 3. Coadministration of aspirin had no significant effects on the area under the plasma concentration time curve (AUC(0-t)) and maximum plasma concentration (Cmax) of R- and S-warfarin after a single dose of warfarin, but significantly increase the AUC(0-t) and Cmax and dramatically decrease the clearance (CL) of R- and S-warfarin after multiple dose of warfarin. Accordingly, there was a slight increase in the AUEC(0-t) and Emax of activated partial thromboplastin time (aPTT), prothrombin time (PT) and international normalized ratio (INR) after multiple dose of warfarin. 4. Coadministration of warfarin had no markedly effects on the AUC(0-t) and Cmax of aspirin and its metabolite salicylic acid after single or multiple dose of aspirin. Meanwhile, the AUEC(0-t) and Emax of inhibition of platelet aggregation (IPA) were not significantly affected by warfarin. 5. Our animal study indicated that coadministration of aspirin with warfarin can cause significant pharmacokinetic and pharmacodynamic drug-drug interactions in beagles. However, more studies are urgently needed to assess related information of warfarin-aspirin drug interactions in healthy volunteers or patients.
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Affiliation(s)
- Chenlin Shen
- a Department of Basic and Clinical Pharmacology , School of Pharmacy, Anhui Medical University , Hefei , Anhui , China .,b Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University , Hefei , Anhui , China
| | - Xiaohui Huang
- a Department of Basic and Clinical Pharmacology , School of Pharmacy, Anhui Medical University , Hefei , Anhui , China
| | - Jun Li
- b Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University , Hefei , Anhui , China
| | - Ping Zhang
- a Department of Basic and Clinical Pharmacology , School of Pharmacy, Anhui Medical University , Hefei , Anhui , China
| | - Lin Li
- a Department of Basic and Clinical Pharmacology , School of Pharmacy, Anhui Medical University , Hefei , Anhui , China
| | - Wei Zhang
- a Department of Basic and Clinical Pharmacology , School of Pharmacy, Anhui Medical University , Hefei , Anhui , China
| | - Tingting Hu
- b Institute for Liver Diseases of Anhui Medical University (AMU), Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University , Hefei , Anhui , China
| | - Faustina Pappoe
- c Department of Parasitology , Provincial Laboratory of Microbiology & Parasitology and the Key Laboratory of Zoonoses Anhui, Anhui Medical University , Hefei , Anhui , China
| | - Jihan Huang
- d Center for Drug Clinical Research, Shanghai University of Chinese Medicine , Shanghai , China , and
| | - Haiqin Tang
- e Department of Cardiology , the First Affiliated Hospital of Anhui Medical University , Hefei , Anhui , China
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Hamer M, Suarez SA, Neuman NI, Alvarez L, Muñoz M, Marti MA, Doctorovich F. Discussing Endogenous NO•/HNO Interconversion Aided by Phenolic Drugs and Vitamins. Inorg Chem 2015; 54:9342-50. [DOI: 10.1021/acs.inorgchem.5b01347] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mariana Hamer
- Departamento
de Química Analítica y Fisicoquímica, Facultad
de Farmacia y Bioquímica (IQUIFIB-CONICET), Universidad de Buenos Aires, Junin 956, Buenos Aires, Argentina
| | - Sebastian A. Suarez
- Gerencia
de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Buenos Aires, Argentina
- Departamento
de Química Inorgánica, Analítica y Química
Física, Facultad de Ciencias Exactas y Naturales (INQUIMAE-CONICET), Universidad de Buenos Aires, Ciudad Universitaria, Buenos
Aires, Argentina
| | - Nicolás I. Neuman
- Departamento
de Química Inorgánica, Analítica y Química
Física, Facultad de Ciencias Exactas y Naturales (INQUIMAE-CONICET), Universidad de Buenos Aires, Ciudad Universitaria, Buenos
Aires, Argentina
- Departamento
de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo, Santa Fe, Argentina
| | - Lucía Alvarez
- Departamento
de Química Inorgánica, Analítica y Química
Física, Facultad de Ciencias Exactas y Naturales (INQUIMAE-CONICET), Universidad de Buenos Aires, Ciudad Universitaria, Buenos
Aires, Argentina
| | - Martina Muñoz
- Departamento
de Química Inorgánica, Analítica y Química
Física, Facultad de Ciencias Exactas y Naturales (INQUIMAE-CONICET), Universidad de Buenos Aires, Ciudad Universitaria, Buenos
Aires, Argentina
| | - Marcelo A. Marti
- Departamento
de Química Biológica, Facultad de Ciencias Exactas y
Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, Buenos Aires, Argentina
| | - Fabio Doctorovich
- Departamento
de Química Inorgánica, Analítica y Química
Física, Facultad de Ciencias Exactas y Naturales (INQUIMAE-CONICET), Universidad de Buenos Aires, Ciudad Universitaria, Buenos
Aires, Argentina
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48
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A computational study for the antioxidant capacity increases in hydroxy-derivatives of paracetamol and salicylic acid. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1393-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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49
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Salicylate activates AMPK and synergizes with metformin to reduce the survival of prostate and lung cancer cells ex vivo through inhibition of de novo lipogenesis. Biochem J 2015; 469:177-87. [PMID: 25940306 DOI: 10.1042/bj20150122] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/05/2015] [Indexed: 01/04/2023]
Abstract
Aspirin, the pro-drug of salicylate, is associated with reduced incidence of death from cancers of the colon, lung and prostate and is commonly prescribed in combination with metformin in individuals with type 2 diabetes. Salicylate activates the AMP-activated protein kinase (AMPK) by binding at the A-769662 drug binding site on the AMPK β1-subunit, a mechanism that is distinct from metformin which disrupts the adenylate charge of the cell. A hallmark of many cancers is high rates of fatty acid synthesis and AMPK inhibits this pathway through phosphorylation of acetyl-CoA carboxylase (ACC). It is currently unknown whether targeting the AMPK-ACC-lipogenic pathway using salicylate and/or metformin may be effective for inhibiting cancer cell survival. Salicylate suppresses clonogenic survival of prostate and lung cancer cells at therapeutic concentrations achievable following the ingestion of aspirin (<1.0 mM); effects not observed in prostate (PNT1A) and lung (MRC-5) epithelial cell lines. Salicylate concentrations of 1 mM increased the phosphorylation of ACC and suppressed de novo lipogenesis and these effects were enhanced with the addition of clinical concentrations of metformin (100 μM) and eliminated in mouse embryonic fibroblasts (MEFs) deficient in AMPK β1. Supplementation of media with fatty acids and/or cholesterol reverses the suppressive effects of salicylate and metformin on cell survival indicating the inhibition of de novo lipogenesis is probably important. Pre-clinical studies evaluating the use of salicylate based drugs alone and in combination with metformin to inhibit de novo lipogenesis and the survival of prostate and lung cancers are warranted.
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Fullerton MD, Ford RJ, McGregor CP, LeBlond ND, Snider SA, Stypa SA, Day EA, Lhoták Š, Schertzer JD, Austin RC, Kemp BE, Steinberg GR. Salicylate improves macrophage cholesterol homeostasis via activation of Ampk. J Lipid Res 2015; 56:1025-33. [PMID: 25773887 PMCID: PMC4409279 DOI: 10.1194/jlr.m058875] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Indexed: 02/02/2023] Open
Abstract
Atherosclerosis stems from imbalances in lipid metabolism and leads to maladaptive inflammatory responses. The AMP-activated protein kinase (Ampk) is a highly conserved serine/threonine kinase that regulates many aspects of lipid and energy metabolism, although its specific role in controlling macrophage cholesterol homeostasis remains unclear. We sought to address this question by testing the effects of direct Ampk activators in primary bone marrow-derived macrophages from Ampk β1-deficient (β1−/−) mice. Macrophages from Ampk β1−/− mice had enhanced lipogenic capacity and diminished cholesterol efflux, although cholesterol uptake was unaffected. Direct activation of Ampk β1 via salicylate (the unacetylated form of aspirin) or A-769662 (a small molecule activator), decreased the synthesis of FAs and sterols in WT but not Ampk β1−/− macrophages. In lipid-laden macrophages, Ampk activation decreased cholesterol content (foam cell formation) and increased cholesterol efflux to HDL and apoA-I, effects that occurred in an Ampk β1-dependent manner. Increased cholesterol efflux was also associated with increased gene expression of the ATP binding cassette transporters, Abcg1 and Abca1. Moreover, in vivo reverse cholesterol transport was suppressed in mice that received Ampk β1−/− macrophages compared with the WT control. Our data highlight the therapeutic potential of targeting macrophage Ampk with new or existing drugs for the possible reduction in foam cell formation during the early stages of atherosclerosis.
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Affiliation(s)
- Morgan D Fullerton
- Divisions of Endocrinology and Metabolism McMaster University, Hamilton, Canada Department of Medicine, and Departments of Biochemistry and Biomedical Sciences McMaster University, Hamilton, Canada Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Canada
| | - Rebecca J Ford
- Divisions of Endocrinology and Metabolism McMaster University, Hamilton, Canada
| | - Chelsea P McGregor
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Canada
| | - Nicholas D LeBlond
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Canada
| | - Shayne A Snider
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Canada
| | - Stephanie A Stypa
- Divisions of Endocrinology and Metabolism McMaster University, Hamilton, Canada
| | - Emily A Day
- Divisions of Endocrinology and Metabolism McMaster University, Hamilton, Canada
| | - Šárka Lhoták
- Hamilton Centre for Kidney Research, St. Joseph's Healthcare Hamilton, Hamilton, Canada Nephrology, McMaster University, Hamilton, Canada
| | - Jonathan D Schertzer
- Department of Medicine, and Departments of Biochemistry and Biomedical Sciences McMaster University, Hamilton, Canada Pediatrics, McMaster University, Hamilton, Canada
| | - Richard C Austin
- Hamilton Centre for Kidney Research, St. Joseph's Healthcare Hamilton, Hamilton, Canada Nephrology, McMaster University, Hamilton, Canada
| | - Bruce E Kemp
- St. Vincent's Institute of Medical Research and Department of Medicine, University of Melbourne, Fitzroy, Australia
| | - Gregory R Steinberg
- Divisions of Endocrinology and Metabolism McMaster University, Hamilton, Canada Department of Medicine, and Departments of Biochemistry and Biomedical Sciences McMaster University, Hamilton, Canada
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