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Summer K, Browne J, Liu L, Benkendorff K. Molluscan Compounds Provide Drug Leads for the Treatment and Prevention of Respiratory Disease. Mar Drugs 2020; 18:md18110570. [PMID: 33228163 PMCID: PMC7699502 DOI: 10.3390/md18110570] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/16/2020] [Accepted: 11/16/2020] [Indexed: 12/26/2022] Open
Abstract
Respiratory diseases place an immense burden on global health and there is a compelling need for the discovery of new compounds for therapeutic development. Here, we identify research priorities by critically reviewing pre-clinical and clinical studies using extracts and compounds derived from molluscs, as well as traditional molluscan medicines, used in the treatment of respiratory diseases. We reviewed 97 biomedical articles demonstrating the anti-inflammatory, antimicrobial, anticancer, and immunomodulatory properties of >320 molluscan extracts/compounds with direct relevance to respiratory disease, in addition to others with promising bioactivities yet to be tested in the respiratory context. Of pertinent interest are compounds demonstrating biofilm inhibition/disruption and antiviral activity, as well as synergism with approved antimicrobial and chemotherapeutic agents. At least 100 traditional medicines, incorporating over 300 different mollusc species, have been used to treat respiratory-related illness in cultures worldwide for thousands of years. These medicines provide useful clues for the discovery of bioactive components that likely underpin their continued use. There is particular incentive for investigations into anti-inflammatory compounds, given the extensive application of molluscan traditional medicines for symptoms of inflammation, and shells, which are the principal molluscan product used in these preparations. Overall, there is a need to target research toward specific respiratory disease-related hypotheses, purify bioactive compounds and elucidate their chemical structures, and develop an evidence base for the integration of quality-controlled traditional medicines.
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Affiliation(s)
- Kate Summer
- Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, GPO Box 157, Lismore, NSW 2480, Australia;
| | - Jessica Browne
- School of Health and Human Sciences, Southern Cross University, Terminal Drive, Bilinga, QLD 4225, Australia;
| | - Lei Liu
- Southern Cross Plant Science, Southern Cross University, GPO Box 157, Lismore, NSW 2480, Australia;
| | - Kirsten Benkendorff
- National Marine Science Centre, Southern Cross University, 2 Bay Drive, Coffs Harbour, NSW 2450, Australia
- Correspondence: ; Tel.: +61-429-520-589
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Assessment of Tunisian virgin olive oils via synchronized analysis of sterols, phenolic acids, and fatty acids in combination with multivariate chemometrics. Eur Food Res Technol 2019. [DOI: 10.1007/s00217-019-03303-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Cazzoletti L, Zanolin ME, Spelta F, Bono R, Chamitava L, Cerveri I, Garcia-Larsen V, Grosso A, Mattioli V, Pirina P, Ferrari M. Dietary fats, olive oil and respiratory diseases in Italian adults: A population-based study. Clin Exp Allergy 2019; 49:799-807. [PMID: 30689281 DOI: 10.1111/cea.13352] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 11/29/2018] [Accepted: 12/06/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Fat intake has been associated with respiratory diseases, with conflicting results. OBJECTIVE We studied the association between asthma and rhinitis with dietary fats, and their food sources in an Italian population. METHODS Clinical and nutritional information was collected for 871 subjects (aged 20-84) from the population-based multi-case-control study Genes Environment Interaction in Respiratory Diseases (GEIRD): 145 with current asthma (CA), 77 with past asthma (PA), 305 with rhinitis and 344 controls. Food intake was collected using the EPIC (European Investigation into Cancer and Nutrition) Food Frequency Questionnaire. The associations between fats and respiratory diseases were estimated by multinomial models. Fats and their dietary sources were analysed both as continuous variables and as quartiles. RESULTS Monounsaturated fatty acids and oleic acid were associated with a reduced risk of CA in both continuous (RRR = 0.68, 95%CI: 0.48; 0.96; RRR = 0.69; 95%CI: 0.49; 0.97, per 10 g, respectively) and per-quartile analyses (p for trend = 0.028 and 0.024, respectively). Olive oil was associated with a decreased risk of CA (RRR = 0.80; 95%CI: 0.65; 0.98 per 10 g). An increased risk of rhinitis was associated with moderate total fat and SFA intake. CONCLUSIONS High dietary intakes of oleic acid and of olive oil are associated with a lower risk of asthma but not of rhinitis.
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Affiliation(s)
- Lucia Cazzoletti
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Maria Elisabetta Zanolin
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Francesco Spelta
- Unit of Respiratory Diseases, Department of Internal Medicine, University of Verona, Verona, Italy.,Long-term care Unit, Fracastoro Hospital - ULSS 9, Verona, Italy
| | - Roberto Bono
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Liliya Chamitava
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Isa Cerveri
- Division of Respiratory Diseases, Istituto di Ricovero e Cura a Carattere Scientifico "San Matteo" Hospital Foundation, University of Pavia, Pavia, Italy
| | - Vanessa Garcia-Larsen
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Amelia Grosso
- Division of Respiratory Diseases, Istituto di Ricovero e Cura a Carattere Scientifico "San Matteo" Hospital Foundation, University of Pavia, Pavia, Italy
| | - Veronica Mattioli
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Pietro Pirina
- Institute of Respiratory Diseases, University of Sassari, Sassari, Italy
| | - Marcello Ferrari
- Unit of Respiratory Diseases, Department of Internal Medicine, University of Verona, Verona, Italy
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Xiong J, Liu S, Pan Y, Zhang B, Chen X, Fan L. Combination of fish oil and ethanol extracts from Spirulina platensis inhibits the airway inflammation induced by ovalbumin in mice. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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de Boer A, van de Worp WRPH, Hageman GJ, Bast A. The effect of dietary components on inflammatory lung diseases - a literature review. Int J Food Sci Nutr 2017; 68:771-787. [PMID: 28276906 DOI: 10.1080/09637486.2017.1288199] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Anti-inflammatory treatment in chronic inflammatory lung diseases usually involves glucocorticosteroids. With patients suffering from serious side effects or becoming resistant, specific nutrients, that are suggested to positively influence disease progression, can be considered as new treatment options. The dietary inflammatory index is used to calculate effects of dietary components on inflammation and lung function to identify most potent dietary components, based on 162 articles. The positive effects of n-3 PUFAs and vitamin E on lung function can at least partially be explained by their anti-inflammatory effect. Many other dietary components showed only small or no effects on inflammation and/or lung function, although the number of weighted studies was often too small for a reliable assessment. Optimal beneficial dietary elements might reduce the required amounts of anti-inflammatory treatments, thereby decreasing both side effects and development of resistance as to improve quality of life of patients suffering from chronic inflammatory lung diseases.
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Affiliation(s)
- Alie de Boer
- a Faculty of Humanities and Sciences , Food Claims Centre Venlo, Maastricht University Campus Venlo, Maastricht University , Venlo , The Netherlands
| | - Wouter R P H van de Worp
- b Department of Pharmacology and Toxicology, Faculty of Health Medicine and Life Sciences , Maastricht University , Maastricht , The Netherlands
| | - Geja J Hageman
- b Department of Pharmacology and Toxicology, Faculty of Health Medicine and Life Sciences , Maastricht University , Maastricht , The Netherlands
| | - Aalt Bast
- b Department of Pharmacology and Toxicology, Faculty of Health Medicine and Life Sciences , Maastricht University , Maastricht , The Netherlands.,c Faculty of Humanities and Sciences , Maastricht University Campus Venlo, Maastricht University , Venlo , The Netherlands
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Marine natural products with anti-inflammatory activity. Appl Microbiol Biotechnol 2015; 100:1645-1666. [DOI: 10.1007/s00253-015-7244-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/07/2015] [Accepted: 12/09/2015] [Indexed: 12/14/2022]
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Nutritional Solutions to Reduce Risks of Negative Health Impacts of Air Pollution. Nutrients 2015; 7:10398-416. [PMID: 26690474 PMCID: PMC4690091 DOI: 10.3390/nu7125539] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/22/2015] [Accepted: 12/02/2015] [Indexed: 12/20/2022] Open
Abstract
Air pollution worldwide has been associated with cardiovascular and respiratory morbidity and mortality, particularly in urban settings with elevated concentrations of primary pollutants. Air pollution is a very complex mixture of primary and secondary gases and particles, and its potential to cause harm can depend on multiple factors—including physical and chemical characteristics of pollutants, which varies with fine-scale location (e.g., by proximity to local emission sources)—as well as local meteorology, topography, and population susceptibility. It has been hypothesized that the intake of anti-oxidant and anti-inflammatory nutrients may ameliorate various respiratory and cardiovascular effects of air pollution through reductions in oxidative stress and inflammation. To date, several studies have suggested that some harmful effects of air pollution may be modified by intake of essential micronutrients (such as B vitamins, and vitamins C, D, and E) and long-chain polyunsaturated fatty acids. Here, we review the existing literature related to the potential for nutrition to modify the health impacts of air pollution, and offer a framework for examining these interactions.
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Arriens C, Hynan LS, Lerman RH, Karp DR, Mohan C. Placebo-controlled randomized clinical trial of fish oil's impact on fatigue, quality of life, and disease activity in Systemic Lupus Erythematosus. Nutr J 2015; 14:82. [PMID: 26283629 PMCID: PMC4538741 DOI: 10.1186/s12937-015-0068-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 07/30/2015] [Indexed: 01/28/2023] Open
Abstract
Introduction A recent metabolomic screen of sera from patients with Systemic Lupus Erythematosus (SLE) found reduction of antioxidants and substrates for energy generation. These metabolic alterations may underlie one of the most common features of SLE - fatigue. The metabolomic studies also noted reduced omega-3 fatty acids, which are powerful anti- oxidants. This deficiency may be causally related to oxidative stress, inflammation, disease activity, and fatigue in SLE. Supplementation of omega-3 fatty acids using fish oil in SLE has been shown to reduce oxidative stress in other studies. The objective of this study is to evaluate the effect of fish oil supplementation on clinical measures of fatigue, quality of life, and disease activity as part of a randomized clinical trial. Methods Fifty SLE patients recruited in outpatient clinics were randomized 1:1 to fish oil supplementation or olive oil placebo, and blinded to their treatment group. At baseline and after 6 months of treatment, RAND Short Form-36 (RAND SF-36), Fatigue Severity Scale (FSS), SLE Disease Activity Index (SLEDAI), and Physician Global Assessment (PGA) were completed; serum was also collected for soluble mediator analysis. Results Thirty-two patients completed the study. PGA improved significantly in the fish oil group compared with the placebo group (p = 0.015). The RAND SF-36 Energy/fatigue and Emotional well-being scores demonstrated improvement trends (p = 0.092 and 0.070). No clear difference was seen in FSS and SLEDAI (p = 0.350 and p = 0.417). Erythrocyte sedimentation rate and serum IL-12 were reduced (p = 0.008 and p = 0.058); while serum IL-13 was increased by fish oil supplementation (p = 0.033). Conclusions In this randomized, placebo-controlled 6-month trial, SLE patients randomized to fish oil supplementation demonstrated improvement in their PGA, RAND SF-36, and some circulating inflammatory markers. Trial registration ClinicalTrials.gov Identifier: NCT02021513 (registered 13 December 2013).
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Affiliation(s)
- Cristina Arriens
- Division of Rheumatic Diseases, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Linda S Hynan
- Departments of Clinical Sciences (Biostatistics) and Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Robert H Lerman
- Functional Medicine Research Center, Metagenics, Inc, Gig Harbor, WA, USA.
| | - David R Karp
- Division of Rheumatic Diseases, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Chandra Mohan
- Department of Biomedical Engineering, University of Houston, Houston, TX, USA.
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Perna canaliculus (Green-Lipped Mussel): Bioactive Components and Therapeutic Evaluation for Chronic Health Conditions. PROGRESS IN DRUG RESEARCH 2015; 70:91-132. [DOI: 10.1007/978-3-0348-0927-6_3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Mickleborough TD, Lindley MR. Omega-3 fatty acids: a potential future treatment for asthma? Expert Rev Respir Med 2014; 7:577-80. [PMID: 24224503 DOI: 10.1586/17476348.2013.841080] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Timothy D Mickleborough
- Department of Kinesiology, School of Public Health-Bloomington, Human Performance and Exercise Biochemistry Laboratory, Indiana University, USA
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Detailed distribution of lipids in Greenshell™ mussel (Perna canaliculus). Nutrients 2014; 6:1454-74. [PMID: 24732016 PMCID: PMC4011045 DOI: 10.3390/nu6041454] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 03/25/2014] [Accepted: 03/26/2014] [Indexed: 11/17/2022] Open
Abstract
Greenshell™ mussels (GSM-Perna canaliculus) are a source of omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFA). Farmed GSM are considered to be a sustainable source of LC-PUFA as they require no dietary inputs, gaining all of their oil by filter-feeding microorganisms from sea water. GSM oil is a high-value product, with a value as much as 1000 times that of fish oils. GSM oil has important health benefits, for example, anti-inflammatory activity. It also contains several minor lipid components that are not present in most fish oil products, and that have their own beneficial effects on human health. We have shown the lipid content of the female GSM (1.9 g/100 g ww) was significantly greater than that of the male (1.4 g/100 g ww). Compared with male GSM, female GSM contained more n-3 LC-PUFA, and stored a greater proportion of total lipid in the gonad and mantle. The higher lipid content in the female than the male GSM is most likely related to gamete production. This information will be useful to optimize extraction of oils from GSM, a local and sustainable source of n-3 LC-PUFA.
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Bargut TCL, Ferreira TPT, Daleprane JB, Martins MA, Silva PMR, Aguila MB. Fish oil has beneficial effects on allergen-induced airway inflammation and hyperreactivity in mice. PLoS One 2013; 8:e75059. [PMID: 24040386 PMCID: PMC3765396 DOI: 10.1371/journal.pone.0075059] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 08/12/2013] [Indexed: 12/19/2022] Open
Abstract
Background Fish oil (FO) is rich in n-3 polyunsaturated fatty acids (PUFA), which have been suggested to be anti-inflammatory and are associated with improvement of several inflammatory diseases. In this study, we investigated the influence of FO on allergen-induced lung inflammation and airway hyperreactivity in mice. Methods Male A/J mice were fed either a standard-chow (SC) or a FO diet (FO) for 8 weeks. After 4 weeks, each group was further randomized for ovalbumin (SC-OVA and FO-OVA) or saline (SC-SAL and FO-SAL) challenge. Resistance and elastance were measured at baseline and after aerosolized methacholine, 24h after the last challenge. Bronchoalveolar lavage (BAL) was performed for leukocyte counts. Lung tissue mucus deposition, peribronchiolar matrix deposition and eosinophil infiltration were quantified. Serum immunoglobulin E (IgE) and IgG1 (ref 2.2), lung IL-4, IL-5, IL-10, IL-13, IL-17, INFγ and eotaxin-1 and 2 were detected by ELISA and nuclear factor kappa B (NFκB), GATA-3 and peroxisome proliferator-activated receptor gamma (PPARγ) expression was measured by Western blot. Results Levels of serum IgE and IgG1 were significantly higher in OVA sensitized mice. OVA challenge resulted in increased eosinophil infiltration, increased inflammatory cytokine production, peribronchiolar matrix and mucus deposition and airway hyperreactivity to aerosolized methacholine. Elevated lung NFκB and GATA-3 expression was noted in OVA-challenged mice. These changes were attenuated in mice fed with FO diet. Higher PPARγ expression was also detected in the lungs from the FO-fed groups. Conclusion Our results demonstrate that FO intake attenuated classical asthma features by suppressing the systemic sensitization, thus providing evidence that FO might be a prophylactic alternative for asthma prevention.
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Affiliation(s)
- Thereza Cristina Lonzetti Bargut
- Laboratory of Morphometry, Metabolism and Cardiovascular Disease, Biomedical Center, Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tatiana Paula Teixeira Ferreira
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Julio Beltrame Daleprane
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marco Aurélio Martins
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Marcia Barbosa Aguila
- Laboratory of Morphometry, Metabolism and Cardiovascular Disease, Biomedical Center, Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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Mickleborough TD, Vaughn CL, Shei RJ, Davis EM, Wilhite DP. Marine lipid fraction PCSO-524 (lyprinol/omega XL) of the New Zealand green lipped mussel attenuates hyperpnea-induced bronchoconstriction in asthma. Respir Med 2013; 107:1152-63. [PMID: 23660397 DOI: 10.1016/j.rmed.2013.04.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 04/09/2013] [Accepted: 04/10/2013] [Indexed: 02/06/2023]
Abstract
PURPOSE Evaluate the effect of the marine lipid fraction of the New Zealand green-lipped mussel (Perna canaliculus) PCSO-524 (Lyprinol/Omega XL), rich in omega-3 fatty acids, on airway inflammation and the bronchoconstrictor response to eucapnic voluntary hyperpnea (EVH) in asthmatics. METHODS Twenty asthmatic subjects, with documented HIB, participated in a placebo controlled double-blind randomized crossover trial. Subjects entered the study on their usual diet and were then placed on 3 weeks of PCSO-524 or placebo supplementation, followed by a 2 week washout period, before crossing over to the alternative diet. Pre- and post-eucapnic voluntary hyperpnea (EVH) pulmonary function, fraction of exhaled nitric oxide (FENO), asthma symptom scores, medication use, exhaled breath condensate (EBC) pH, cysteinyl leukotrienes (cyst-LT), 8-isoprostane and urinary 9α, 11β-prostaglandin (PG)F2 and Clara (CC16) protein concentrations were assessed at the beginning of the trial and at the end of each treatment period. RESULTS The PCSO-524 diet significantly reduced (p < 0.05) the maximum fall in post-EVH FEV1 (-8.4 ± 3.2%) compared to usual (-19.3 ± 5.4%) and placebo diet (-22.5 ± 13.7%). Pre- and post- EVH EBC cyst-LT and 8-isoprostane, and urinary 9α, 11β-PGF2 and CC16 concentrations were significantly reduced (p < 0.05) on the PCSO-524 diet compared to the usual and placebo diet. EBC pH and asthma symptom scores were significantly improved (p < 0.05) and rescue medication use significantly reduced (p < 0.05) on the PCSO-524 diet compared to the usual and placebo diet. CONCLUSION PCSO-524 (Lyprinol)/Omega XL) may have beneficial effects in HIB and asthma by serving as a pro-resolving agonist and/or inflammatory antagonist.
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Affiliation(s)
- Timothy D Mickleborough
- School of Public Health-Bloomington, Department of Kinesiology, Human Performance and Exercise Biochemistry Laboratory, 1025 E. 7th St. SPH 112, Bloomington, IN 47404, USA.
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Beneficial effects of n-3 PUFA on chronic airway inflammatory diseases. Prostaglandins Other Lipid Mediat 2012; 99:57-67. [DOI: 10.1016/j.prostaglandins.2012.09.006] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 09/26/2012] [Accepted: 09/27/2012] [Indexed: 12/14/2022]
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Hansbro PM, Scott GV, Essilfie AT, Kim RY, Starkey MR, Nguyen DH, Allen PD, Kaiko GE, Yang M, Horvat JC, Foster PS. Th2 cytokine antagonists: potential treatments for severe asthma. Expert Opin Investig Drugs 2012; 22:49-69. [PMID: 23126660 DOI: 10.1517/13543784.2013.732997] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Asthma is a major disease burden worldwide. Treatment with steroids and long acting β-agonists effectively manage symptoms in many patients but do not treat the underlying cause of disease and have serious side effects when used long term and in children. Therapies targeting the underlying causes of asthma are urgently needed. T helper type 2 (Th2) cells and the cytokines they release are clinically linked to the presentation of all forms of asthma. They are the primary drivers of mild to moderate and allergic asthma. They also play a pathogenetic role in exacerbations and more severe asthma though other factors are also involved. Much effort using animal models and human studies has been dedicated to the identification of the pathogenetic roles of these cells and cytokines and whether inhibition of their activity has therapeutic benefit in asthma. AREAS COVERED We discuss the current status of Th2 cytokine antagonists for the treatment of asthma. We also discuss the potential for targeting Th2-inducing cytokines, Th2 cell receptors and signaling as well as the use of Th2 cell antagonists, small interfering oligonucleotides, microRNAs, and combination therapies. EXPERT OPINION Th2 antagonists may be most effective in particular asthma subtypes/endotypes where specific cytokines are known to be active through the analysis of biomarkers. Targeting common receptors and pathways used by these cytokines may have additional benefit. Animal models have been valuable in identifying therapeutic targets in asthma, however the results from such studies need to be carefully interpreted and applied to appropriately stratified patient cohorts in well-designed clinical studies and trials.
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Affiliation(s)
- Philip M Hansbro
- The University of Newcastle, Priority Research Centre for Asthma and Respiratory Disease and Hunter Medical Research Institute, Level 2, Kookaburra Circuit, New Lambton Heights, Newcastle, New South Wales, 2305, Australia.
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Katelaris CH, Linneberg A, Magnan A, Thomas WR, Wardlaw AJ, Wark P. Developments in the field of allergy in 2010 through the eyes of Clinical and Experimental Allergy. Clin Exp Allergy 2012; 41:1690-710. [PMID: 22107142 DOI: 10.1111/j.1365-2222.2011.03892.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In 2010 over 200 articles were published in Clinical and Experimental Allergy including editorials, reviews, opinion articles, letters, book reviews and of course at the heart of the journal, papers containing original data which have moved the field of allergy forward on a number of fronts. For the third year running the editors felt it would be of value to summarize the key messages contained in these papers as a snapshot of where the cutting edge of research into allergic disease is leading. We have broadly followed the sections of the journal, although this year the mechanistic articles are grouped together and the studies involving experimental models of disease are discussed throughout the paper. In the field of asthma and rhinitis phenotypes and biomarkers continue to a major pre-occupation of our authors. There is continued interest in mechanisms of inflammation and disordered lung function with the mouse model of asthma continuing to offer new insights. There is also a steady flow of papers investigating new therapies, including those derived from plants and herbs, although many are mechanistic with too few high quality clinical trials. The mechanisms involved in allergic disease are well covered with many strong papers using clinical material to ask relevant questions. Pro-pre and snybiotics continue to be of major interest to our authors and this remains a controversial and complicated field. The discipline of epidemiology has retained its interest in risk factors for the development of allergic disease with a view to refining and debating the reasons for the allergy epidemic. There is continued interest in the relationship between helminthic disease and allergy with a new twist in 2010 involving studies using infection with helminths as a potential treatment. The genetics of allergic disease continues to be very productive, although the field has moved on from only investigating single nucleotide polymorphisms of candidate genes to Genome Wide Association Studies and an increasing and welcome emphasis on gene-environment interactions. In the field of clinical allergy there is steady flow of papers describing patterns of drug allergy with renewed interest in reactions to contrast media, but food allergy is the major area of interest in this section of the journal. Lastly in the field of allergens there is a growing interest in the role of component resolved diagnosis in improving the diagnosis and management of allergic disease. Another excellent year, full of fascinating and high quality work, which the journal has been proud to bring to the allergy community.
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Affiliation(s)
- C H Katelaris
- University of Western Sydney, Campbelltown Hospital, Sydney, NSW, Australia
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