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Deng Z, Kim SW. Opportunities and Challenges of Soy Proteins with Different Processing Applications. Antioxidants (Basel) 2024; 13:569. [PMID: 38790674 PMCID: PMC11117726 DOI: 10.3390/antiox13050569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/26/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
Soybean meal (SBM) is a prevailing plant protein supplement in animal diets because of its nutritional value and availability. This review paper explores the significance of SBM and processed soy products, emphasizing their nutritional and bioactive components, such as isoflavones and soyasaponins. These compounds are known for their antioxidant and anti-inflammatory properties and are associated with a reduced prevalence of chronic diseases. However, the presence of antinutritional compounds in SBM presents a significant challenge. The paper evaluates various processing methods, including ethanol/acid wash, enzyme treatment, and fermentation, which are aimed at enhancing the nutritional value of soy products. It highlights the significance to maintain a balance between nutritional enhancement and the preservation of beneficial bioactive compounds, emphasizing the importance of different processing techniques to fully exploit the health benefits of soy-based products. Therefore, this review illuminates the complex balance between nutritional improvement, bioactive compound preservation, and the overall health implications of soy products.
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Affiliation(s)
| | - Sung Woo Kim
- Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA;
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2
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Banyś K, Jelińska M, Wrzosek M, Skrajnowska D, Wrzesień R, Bielecki W, Bobrowska-Korczak B. Inflammation Factors and Genistein Supplementation in Cancer-Preliminary Research. Curr Issues Mol Biol 2024; 46:2166-2180. [PMID: 38534756 DOI: 10.3390/cimb46030140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/28/2024] Open
Abstract
The purpose of this study was to evaluate the effect of genistein in nano, micro, and macro forms on the intensity of the DMBA-induced tumor process in rats and to understand the mechanisms of this action. The effect of genistein supplementation on the content of selected eicosanoids (HETEs, HODE, and HEPE) in the serum of rats was evaluated. The levels and expression of genes encoding various pro-inflammatory cytokines (IL-1, IL-6) and MMP-9 in the blood of rats were also investigated. The biological material for the study was blood obtained from female rats of the Sprague Dawley strain (n = 32). The animals were randomly divided into four groups: animals without supplementation, and animals supplemented at a dose of 0.2 mg/kg b.w. (0.1 mg/mL) with macro, micro (587 ± 83 nm), or nano (92 ± 41 nm) genistein. To induce mammary neoplasia (adenocarcinoma), rats were given 7,12-dimethyl-1,2-benz[a]anthracene (DMBA). The content of selected eicosanoids was determined by liquid chromatography with UV detection. An immunoenzymatic method was used to determine the content of cytokines and MMP-9. The expression of the IL-6, IL-1beta, and MMP-9 genes was determined with quantitative real-time PCR (qRT-PCR) using TaqMan probes. Based on the study, it was shown that supplementation of animals with genistein in macro, micro, and nano forms increased the intensity of the tumor process in rats. It was shown that the content of 12-HEPE, HODE, and 12-HETE in the serum of genistein-supplemented rats was statistically significantly lower with respect to the content of the aforementioned markers in the serum of rats receiving only a standard diet, devoid of supplementation. It was found that animals supplemented with nano-, micro-, and macrogenistein had higher levels of metalloproteinase-9, MMP-9, compared to animals without supplementation. There was a significant increase in MMP-9 gene expression in the blood of macrogenistein-supplemented animals, relative to the other groups of rats. On the basis of the study, it was shown that supplementation of animals with nano-, micro-, and macrogenistein had an effect on the development of the tumor process. Dietary supplementation with genistein significantly decreased the level of selected eicosanoids, which may have significant impacts on cancer development and progression.
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Affiliation(s)
- Karolina Banyś
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Poland, Banacha 1, 02-097 Warsaw, Poland
| | - Małgorzata Jelińska
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Poland, Banacha 1, 02-097 Warsaw, Poland
| | - Małgorzata Wrzosek
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, Poland, Banacha 1, 02-097 Warsaw, Poland
| | - Dorota Skrajnowska
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Poland, Banacha 1, 02-097 Warsaw, Poland
| | - Robert Wrzesień
- Central Laboratory of Experimental Animals, Medical University of Warsaw, Poland, Banacha 1, 02-097 Warsaw, Poland
| | - Wojciech Bielecki
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Live Sciences, Nowoursynowska 159c Street, 02-787 Warsaw, Poland
| | - Barbara Bobrowska-Korczak
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Poland, Banacha 1, 02-097 Warsaw, Poland
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Kusumah J, Castañeda-Reyes ED, Bringe NA, Gonzalez de Mejia E. Soybean ( Glycine max) INFOGEST Colonic Digests Attenuated Inflammatory Responses Based on Protein Profiles of Different Varieties. Int J Mol Sci 2023; 24:12396. [PMID: 37569771 PMCID: PMC10418973 DOI: 10.3390/ijms241512396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/21/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023] Open
Abstract
Soybean compounds have been established to modulate inflammation, but less is known about how whole soybean compositions work together after digestion. The objective was to evaluate and compare the anti-inflammatory responses of different soybean varieties under simulated gastrointestinal digestion, with additional consideration of the glycinin:β-conglycinin ratio (GBR). Soybean colonic digests (SCD) inhibited cyclooxygenase (COX)-2 (25-82%), 5-lipoxidase (LOX) (18-35%), and inducible nitric oxide (iNOS) (8-61%). Varieties 88, GN3, and 93 were the most effective inhibitors. SCD (1 mg/mL) of varieties 81 and GN1 significantly (p < 0.05) reduced nitrite production by 44 and 47%, respectively, compared to lipopolysaccharide (LPS)-stimulated macrophages. SCD effectively reduced pro-inflammatory cytokine interleukin (IL)-6 (50 and 80% for 96 and GN1, respectively). Western blot results showed a decrease in the expression of iNOS, p65, and p50. The GBR was in the range of 0.05-1.57. Higher ratio correlated with higher production of IL-1β (r = 0.44) and tumor necrosis factor-alpha (TNF-α, r = 0.56). Inflammatory microarray results showed a significant decrease in expression of markers granulocyte-macrophage colony-stimulating factor (GM-CSF) and IL-6 in cells treated with GN1 SCD compared to LPS. The results suggested that SCD exerted its anti-inflammatory potential through nuclear factor kappa B (NF-κΒ) pathway inhibition by decreasing the levels of NF-κB-dependent cytokines and subunits, and inhibition of pro-inflammatory enzyme activity.
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Affiliation(s)
- Jennifer Kusumah
- 228 Edward R Madigan Lab, Department Food Science, and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (J.K.); (E.D.C.-R.)
| | - Erick Damian Castañeda-Reyes
- 228 Edward R Madigan Lab, Department Food Science, and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (J.K.); (E.D.C.-R.)
| | | | - Elvira Gonzalez de Mejia
- 228 Edward R Madigan Lab, Department Food Science, and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (J.K.); (E.D.C.-R.)
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Singh S, Maurya AK, Meena A, Mishra N, Luqman S. Narirutin downregulates lipoxygenase-5 expression and induces G0/G1 arrest in triple-negative breast carcinoma cells. Biochim Biophys Acta Gen Subj 2023; 1867:130340. [PMID: 36868290 DOI: 10.1016/j.bbagen.2023.130340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 02/16/2023] [Accepted: 02/26/2023] [Indexed: 03/05/2023]
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) accounts for 20% of breast cancer that does not express HER2, progesterone and estrogen receptors. It is associated with a high mortality rate, morbidity, metastasis, recurrence, poor prognosis and resistance to chemotherapy. Lipoxygenase-5 (LOX-5), cyclooxygenase-2 (COX-2), cathepsin-D (CATD), ornithine decarboxylase (ODC) and dihydrofolate reductase (DHFR) are involved in breast cancer carcinogenesis; hence, there is a pressing need to identify novel chemicals that targets these enzymes. Narirutin, a flavanone glycoside abundantly present in citrus fruits, is reported to have immune-modulatory, anti-allergic and antioxidant potential. Still, the cancer chemopreventive mechanism against TNBC has not been explored. METHODS In vitro experiments, enzyme activity, expression analysis, molecular docking and MD simulation were carried out. RESULTS Narirutin suppressed the growth of MDA-MB-231 and MCF-7 in a dose-proportional manner. The pronounced effect with >50% inhibition was observed in SRB and MTT assays for MDAMB-231 cells. Unexpectedly, narirutin suppressed the proliferation of normal cells (24.51%) at 100 μM. Further, narirutin inhibits the activity of LOX-5 in cell-free (18.18 ± 3.93 μM) and cell-based (48.13 ± 7.04 μM) test systems while moderately affecting COX-2, CATD, ODC and DHFR activity. Moreover, narirutin revealed a down-regulation of LOX-5 expression with a fold change of 1.23. Besides, MD simulation experiments confirm that narirutin binding forms a stable complex with LOX-5 and improves the stability and compactness of LOX-5. In addition, the prediction analysis demonstrates that narirutin could not cross the blood-brain barrier and did not act as an inhibitor of different CYPs. CONCLUSIONS AND SIGNIFICANCE Narirutin could be a potent cancer chemopreventive lead for TNBC, further paving the way for synthesizing novel analogues.
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Affiliation(s)
- Shilpi Singh
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, Uttar Pradesh, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Akhilesh Kumar Maurya
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Prayagraj, Uttar Pradesh, India
| | - Abha Meena
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, Uttar Pradesh, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
| | - Nidhi Mishra
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Prayagraj, Uttar Pradesh, India
| | - Suaib Luqman
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, Uttar Pradesh, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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Kumar S, Awana M, Rani K, Kumari S, Sasi M, Dahuja A. Soybean ( Glycine max) isoflavone conjugate hydrolysing β-glucosidase ( GmICHG): a promising candidate for soy isoflavone bioavailability enhancement. 3 Biotech 2023; 13:52. [PMID: 36685322 PMCID: PMC9849637 DOI: 10.1007/s13205-022-03427-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 12/08/2022] [Indexed: 01/19/2023] Open
Abstract
Isoflavones are a sub-class of phenylpropanoids having health benefits and a role in plant defence and plant-rhizobium interaction. Isoflavone conjugate hydrolysis is crucial in determining the bioactivity and bioavailability of these isoflavones inside the human body. This study examined the different characteristics of soy isoflavone conjugate hydrolysing β-glucosidase (GmICHG) to explore its potential for isoflavone bioavailability enhancement. We cloned the full-length GmICHG cDNA from the soybean seedling roots from the DS2706 variety of 1545 bp. The bioinformatics analysis revealed secretion and glycosylation of this protein. The evolutionary relatedness of this gene to the other glucosidases interestingly had related sequences outside the Papilionaceae family. The protein had a pI above neutral of 7.62 and optimum pH of 6.0, indicating its activity in the extracellular acidic environment. The GmICHG gene expression at three stages of seedling roots gradually rose to 1.84 ± 0.54 fold and a concomitant increase in the β-glucosidase activity. The enzyme kinetics of GmICHG showed a K m of 6.38 mM and V max of 2.82 U/ml and an optimum temperature of 40 °C. These hint that soy ICHG can be a potent candidate for the isoflavone bioavailability enhancement by hydrolysing their β-glycosidic bonds. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03427-5.
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Affiliation(s)
- Sandeep Kumar
- Division of Biochemistry, ICAR-IARI, PUSA Campus, New Delhi, 110012 India
| | - Monika Awana
- Division of Biochemistry, ICAR-IARI, PUSA Campus, New Delhi, 110012 India
| | - Khushboo Rani
- Division of Biochemistry, ICAR-IARI, PUSA Campus, New Delhi, 110012 India
| | - Sweta Kumari
- Division of Biochemistry, ICAR-IARI, PUSA Campus, New Delhi, 110012 India
| | - Minnu Sasi
- Division of Biochemistry, ICAR-IARI, PUSA Campus, New Delhi, 110012 India
| | - Anil Dahuja
- Division of Biochemistry, ICAR-IARI, PUSA Campus, New Delhi, 110012 India
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6
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Current Pharmacotherapy and Multi-Target Approaches for Alzheimer's Disease. Pharmaceuticals (Basel) 2022; 15:ph15121560. [PMID: 36559010 PMCID: PMC9781592 DOI: 10.3390/ph15121560] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/26/2022] [Accepted: 11/27/2022] [Indexed: 12/23/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by decreased synaptic transmission and cerebral atrophy with appearance of amyloid plaques and neurofibrillary tangles. Cognitive, functional, and behavioral alterations are commonly associated with the disease. Different pathophysiological pathways of AD have been proposed, some of which interact and influence one another. Current treatment for AD mainly involves the use of therapeutic agents to alleviate the symptoms in AD patients. The conventional single-target treatment approaches do not often cause the desired effect in the disease due to its multifactorial origin. Thus, multi-target strategies have since been undertaken, which aim to simultaneously target multiple targets involved in the development of AD. In this review, we provide an overview of the pathogenesis of AD and the current drug therapies for the disease. Additionally, rationales of the multi-target approaches and examples of multi-target drugs with pharmacological actions against AD are also discussed.
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Production of C20 9S- and C22 11S-hydroxy fatty acids by cells expressing Shewanella hanedai arachidonate 9S-lipoxygenase. Appl Microbiol Biotechnol 2022; 107:247-260. [DOI: 10.1007/s00253-022-12285-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 10/24/2022] [Accepted: 11/08/2022] [Indexed: 11/29/2022]
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8
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Calderaro A, Patanè GT, Tellone E, Barreca D, Ficarra S, Misiti F, Laganà G. The Neuroprotective Potentiality of Flavonoids on Alzheimer's Disease. Int J Mol Sci 2022; 23:ijms232314835. [PMID: 36499159 PMCID: PMC9736131 DOI: 10.3390/ijms232314835] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/19/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
Alzheimer's disease (AD), due to its spread, has become a global health priority, and is characterized by senile dementia and progressive disability. The main cause of AD and other neurodegenerations (Huntington, Parkinson, Amyotrophic Lateral Sclerosis) are aggregated protein accumulation and oxidative damage. Recent research on secondary metabolites of plants such as polyphenols demonstrated that they may slow the progression of AD. The flavonoids' mechanism of action in AD involved the inhibition of acetylcholinesterase, butyrylcholinesterase, Tau protein aggregation, β-secretase, oxidative stress, inflammation, and apoptosis through modulation of signaling pathways which are implicated in cognitive and neuroprotective functions, such as ERK, PI3-kinase/Akt, NFKB, MAPKs, and endogenous antioxidant enzymatic systems. This review focuses on flavonoids and their role in AD, in terms of therapeutic potentiality for human health, antioxidant potential, and specific AD molecular targets.
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Affiliation(s)
- Antonella Calderaro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Giuseppe Tancredi Patanè
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Ester Tellone
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (E.T.); (D.B.)
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (E.T.); (D.B.)
| | - Silvana Ficarra
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Francesco Misiti
- Department of Human Sciences, Society and Health, University of Cassino and Southern Lazio, V. S. Angelo, Loc. Folcara, 3043 Cassino, Italy
| | - Giuseppina Laganà
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
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9
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Grain phenolics: critical role in quality, storage stability and effects of processing in major grain crops—a concise review. Eur Food Res Technol 2022. [DOI: 10.1007/s00217-022-04026-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Mas-Bargues C, Borrás C, Viña J. The multimodal action of genistein in Alzheimer's and other age-related diseases. Free Radic Biol Med 2022; 183:127-137. [PMID: 35346775 DOI: 10.1016/j.freeradbiomed.2022.03.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 02/07/2023]
Abstract
Genistein is a phytoestrogen that, due to its structural similarity with estrogen, can both mimic and antagonize estrogen effects. Early analysis proved that at high concentrations, genistein inhibits breast cancer cell proliferation, thereby suggesting an anticancer activity. Since then, many discoveries have identified the genistein mechanism of action, including cell cycle arrest, apoptosis induction, as well as angiogenesis, and metastasis inhibition. In this review, we aim to discuss the multimodal action of genistein as an antioxidant, anti-inflammatory, anti-amyloid β, and autophagy promoter, which could be responsible for the genistein beneficial effect on Alzheimer's. Furthermore, we pinpoint the main signal transduction pathways that are known to be modulated by genistein. Genistein has thus several beneficial effects in several diseases, many of them associated with age, such as the above mentioned Alzheimer disease. Indeed, the beneficial effects of genistein for health promotion depend on each multimodality. In the context of geroscience, genistein has promising beneficial effects due to its multimodal action to treat age associated-diseases.
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Affiliation(s)
- Cristina Mas-Bargues
- Freshage Research Group, Department of Physiology, Faculty of Medicine, University of Valencia, Centro de Investigación Biomédica en Red Fragilidad y Envejecimiento Saludable-Instituto de Salud Carlos III (CIBERFES-ISCIII), INCLIVA, Valencia, 46010, Spain.
| | - Consuelo Borrás
- Freshage Research Group, Department of Physiology, Faculty of Medicine, University of Valencia, Centro de Investigación Biomédica en Red Fragilidad y Envejecimiento Saludable-Instituto de Salud Carlos III (CIBERFES-ISCIII), INCLIVA, Valencia, 46010, Spain.
| | - José Viña
- Freshage Research Group, Department of Physiology, Faculty of Medicine, University of Valencia, Centro de Investigación Biomédica en Red Fragilidad y Envejecimiento Saludable-Instituto de Salud Carlos III (CIBERFES-ISCIII), INCLIVA, Valencia, 46010, Spain
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11
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Goh YX, Jalil J, Lam KW, Husain K, Premakumar CM. Genistein: A Review on its Anti-Inflammatory Properties. Front Pharmacol 2022; 13:820969. [PMID: 35140617 PMCID: PMC8818956 DOI: 10.3389/fphar.2022.820969] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 01/04/2022] [Indexed: 11/29/2022] Open
Abstract
Nowadays, non-resolving inflammation is becoming a major trigger in various diseases as it plays a significant role in the pathogenesis of atherosclerosis, asthma, cancer, obesity, inflammatory bowel disease, chronic obstructive pulmonary disease, neurodegenerative disease, multiple sclerosis, and rheumatoid arthritis. However, prolonged use of anti-inflammatory drugs is usually accompanied with undesirable effects and hence more patients tend to seek for natural compounds as alternative medicine. Considering the fact above, there is an urgency to discover and develop potential novel, safe and efficacious natural compounds as drug candidates for future anti-inflammatory therapy. Genistein belongs to the flavonoid family, in the subgroup of isoflavones. It is a phytoestrogen that is mainly derived from legumes. It is a naturally occurring chemical constituent with a similar chemical structure to mammalian estrogens. It is claimed to exert many beneficial effects on health, such as protection against osteoporosis, reduction in the risk of cardiovascular disease, alleviation of postmenopausal symptoms and anticancer properties. In the past, numerous in vitro and in vivo studies have been conducted to investigate the anti-inflammatory potential of genistein. Henceforth, this review aims to summarize the anti-inflammatory properties of genistein linking with the signaling pathways and mediators that are involved in the inflammatory response as well as its toxicity profile. The current outcomes are analysed to highlight the prospect as a lead compound for drug discovery. Data was collected using PubMed, ScienceDirect, SpringerLink and Scopus databases. Results showed that genistein possessed strong anti-inflammatory activities through inhibition of various signaling pathways such as nuclear factor kappa-B (NF-κB), prostaglandins (PGs), inducible nitric oxide synthase (iNOS), proinflammatory cytokines and reactive oxygen species (ROS). A comprehensive assessment of the mechanism of action in anti-inflammatory effects of genistein is included. However, evidence for the pharmacological effects is still lacking. Further studies using various animal models to assess pharmacological effects such as toxicity, pharmacokinetics, pharmacodynamics, and bioavailability studies are required before clinical studies can be conducted. This review will highlight the potential use of genistein as a lead compound for future drug development as an anti-inflammatory agent.
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Affiliation(s)
- Yu Xian Goh
- Centre for Drug and Herbal Development, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Juriyati Jalil
- Centre for Drug and Herbal Development, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Kok Wai Lam
- Centre for Drug and Herbal Development, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Khairana Husain
- Centre for Drug and Herbal Development, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Chandini Menon Premakumar
- Centre for Quality Management of Medicines, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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12
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Serea D, Condurache NN, Aprodu I, Constantin OE, Bahrim GE, Stănciuc N, Stanciu S, Rapeanu G. Thermal Stability and Inhibitory Action of Red Grape Skin Phytochemicals against Enzymes Associated with Metabolic Syndrome. Antioxidants (Basel) 2022; 11:antiox11010118. [PMID: 35052624 PMCID: PMC8773072 DOI: 10.3390/antiox11010118] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 11/16/2022] Open
Abstract
The present study focuses on heat-induced structural changes and the degradation kinetics of phytochemicals and antioxidant activity of red grape skin extract. The thermal degradation of anthocyanins, flavonoids, polyphenols, and antioxidant activity followed a first-order kinetic model, increasing with temperature due to the intensification of the degradation process. The activation energy (Ea) highlighted this phenomenon. Likewise, the kinetic and thermodynamic parameters certified the irreversible degradation of the bioactive compounds from the skin of the Băbească neagră grape variety. Both temperature and duration of heating had a significant impact on the content of bioactive compounds. In addition, the red grape skin extract inhibited certain enzymes such as α-amylase, α-glucosidase, lipase, and lipoxygenase, which are associated with metabolic syndrome and inflammation. Further knowledge on the possible inhibition mechanisms exerted by the major anthocyanins found in red grape skin extract on the metabolic syndrome-associated enzymes was gathered upon running molecular docking tests. Detailed analysis of the resulting molecular models revealed that malvidin 3-O-glucoside binds in the vicinity of the catalytic site of α-amylase and lipase, whereas no direct contact with catalytic amino acids was identified in the case of α-glucosidase and lipoxygenase.
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13
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Iron Complexes of Flavonoids-Antioxidant Capacity and Beyond. Int J Mol Sci 2021; 22:ijms22020646. [PMID: 33440733 PMCID: PMC7827006 DOI: 10.3390/ijms22020646] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/30/2020] [Accepted: 01/02/2021] [Indexed: 02/07/2023] Open
Abstract
Flavonoids are common plant natural products able to suppress ROS-related damage and alleviate oxidative stress. One of key mechanisms, involved in this phenomenon is chelation of transition metal ions. From a physiological perspective, iron is the most significant transition metal, because of its abundance in living organisms and ubiquitous involvement in redox processes. The chemical, pharmaceutical, and biological properties of flavonoids can be significantly affected by their interaction with transition metal ions, mainly iron. In this review, we explain the interaction of various flavonoid structures with Fe(II) and Fe(III) ions and critically discuss the influence of chelated ions on the flavonoid biochemical properties. In addition, specific biological effects of their iron metallocomplexes, such as the inhibition of iron-containing enzymes, have been included in this review.
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14
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Rekha MJ, Bettadaiah BK, Muthukumar SP, Govindaraju K. Synthesis, characterization and anti-inflammatory properties of karanjin (Pongamia pinnata seed) and its derivatives. Bioorg Chem 2021; 106:104471. [PMID: 33257003 DOI: 10.1016/j.bioorg.2020.104471] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/08/2020] [Accepted: 11/10/2020] [Indexed: 01/07/2023]
Abstract
Karanja (Pongamia pinnata) is a medicinal tree used in the Indian traditional ayurvedic system for treating several ailments. The seeds contain a unique furano-flavonoid karanjin, which has shown to possess many medicinal properties. Its usage at the clinical level is affected due to poor solubility and absorption. In the present investigation, molecular modifications of karanjin were attempted and evaluated their effect on anti-inflammatory activity. Firstly, Karanja ketone was obtained from karanjin by hydrolysis, and it was converted into karanja ketone oxime. The oxime undergoes Beckmann rearrangement and cyclized to yield furano benzoxazole (karanja oxazole). The new derivatives were purified with >95% purity (HPLC) and spectrally characterized (HR-MS, FTIR, and NMR). Among the test compounds, karanja ketone oxime exhibited higher antioxidant activity with an IC50 value of 360 µg/ml (DPPH). Soy lipoxygenase-1 (LOX-1) inhibitory activity of oxime was higher (IC50 = 65.4 µM) than other compounds. Fluorescence studies showed that oxime had higher quenching capacity with a Qmax of 76.3% and a binding constant of 0.9 × 105 M-1 for soy LOX-1. In-silico interaction studies showed that karanja ketone oxime had the least binding energy of -5.76 kcal/mol with LOX-1 by forming two hydrogen bonds with hydrophobic amino acids Leu 390 and Gly 392. The compounds were evaluated for their acute anti-inflammatory activity by the paw and ear edema in the rat model. Karanjin inhibits paw edema and ear edema by 34.13% and 51.13%, respectively, whereas the derivatives inhibited by 45-57 % and 70-76.8%. This study reports a rational approach to synthesize karanjin derivatives with considerable anti-inflammatory properties, both in-vitro and in-vivo.
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Affiliation(s)
- M J Rekha
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India
| | - B K Bettadaiah
- Department of Spices and Flavour Sciences, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India.
| | - S P Muthukumar
- Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India
| | - K Govindaraju
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India.
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CENGİZ S, CAVAS L. Can soybean lipoxygenases be real models for mammalian lipoxygenases? A bioinformatics approach. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2020. [DOI: 10.18596/jotcsa.785109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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16
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Yang L, Kirikoshi J, Sato D, Takasugi M, Hishida A, Hayashi S, Kawahara N, Mizukami M, Wu M, Yamagishi T, Arai H. New isoflavone glucosides in yabumame (Amphicarpaea bracteata (L.) Fernald subsp. edgeworthii (Benth.) H.Ohashi var. japonica (Oliv.) H.Ohashi) and their effect on leukotriene B 4 production in mast cells. J Nat Med 2020; 75:28-36. [PMID: 32803653 DOI: 10.1007/s11418-020-01439-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 07/05/2020] [Indexed: 11/24/2022]
Abstract
Yabumame (Amphicarpaea bracteata (L.) Fernald subsp. edgeworthii (Benth.) H.Ohashi var. japonica (Oliv.) H.Ohashi) is a legume plant that the Ainu people eat as a traditional food, although the bioactive ingredients other than vitamins have not been studied. In this study, the structures of yabumame isoflavone glucosides were determined and their effect on leukotriene (LT) B4, a chemical mediator of type I allergy, produced in mast cells, was investigated in vitro. Seven compounds were isolated from yabumame. Their structures were determined by spectroscopic and spectrometric analyses, which were genistein-7-O-β-D-glucoside (1), formononetin-7-O-(2″-O-β-D-glucosyl)-β-D-glucoside (2), formononetin-7-O-β-D-glucoside (3), biochanin A-7-O-(2″-O-β-D-glucosyl)-β-D-glucoside (4), formononetin-7-O-(6″-O-malonyl)-β-D-glucoside (5), biochanin A-7-O-(2″-O-β-D-glucosyl-6″-O-β-D-glucosyl)-β-D-glucoside (6), and biochanin A-7-O-(6″-O-malonyl)-β-D-glucoside (7). Compounds 2, 4, and 6 were determined as new compounds. Compound 3 showed statistically significant suppressive effect on LTB4 production in mast cells, although the activity was not strong. On the other hand, biochanin A, an aglycone common to compounds 4, 6, and 7, strongly inhibited the LTB4 production. The results suggest that some of yabumame isoflavone glucosides might contribute to mitigate type I allergy. Seven isoflavone glucosides including 3 new compounds were found in yabumame and their anti-allergic effect was evaluated.
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Affiliation(s)
- Lifeng Yang
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology, 165 Koencho, Kitami, Hokkaido, 090-8507, Japan.,Jinan Fruit Research Institute, All China Federation of Supply and Marketing Cooperatives, 16001 East Road Jingshi, Jinan, 250220, Shandong, China
| | - Jyunichi Kirikoshi
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology, 165 Koencho, Kitami, Hokkaido, 090-8507, Japan
| | - Daiki Sato
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology, 165 Koencho, Kitami, Hokkaido, 090-8507, Japan
| | - Mikako Takasugi
- Department of Life Science, Kyushu Sangyo University, 2-3-1 Matsukadai, Higashi-ku, Fukuoka, 813-8503, Japan
| | - Atsuyuki Hishida
- National Institutes of Biomedical Innovation, Health and Nutrition, 108-4 Ohashi, Nayoro, Hokkaido, 096-0065, Japan
| | - Shigeki Hayashi
- National Institutes of Biomedical Innovation, Health and Nutrition, 108-4 Ohashi, Nayoro, Hokkaido, 096-0065, Japan
| | - Nobuo Kawahara
- National Institutes of Biomedical Innovation, Health and Nutrition, 108-4 Ohashi, Nayoro, Hokkaido, 096-0065, Japan
| | - Megumi Mizukami
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Maeda 7-15-4-1, Teine, Sapporo, Hokkaido, 006-8585, Japan
| | - Maoyu Wu
- Jinan Fruit Research Institute, All China Federation of Supply and Marketing Cooperatives, 16001 East Road Jingshi, Jinan, 250220, Shandong, China
| | - Takashi Yamagishi
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology, 165 Koencho, Kitami, Hokkaido, 090-8507, Japan
| | - Hirofumi Arai
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology, 165 Koencho, Kitami, Hokkaido, 090-8507, Japan.
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Anti-Inflammatory and Anticancer Properties of Bioactive Compounds from Sesamum indicum L.-A Review. Molecules 2019; 24:molecules24244426. [PMID: 31817084 PMCID: PMC6943436 DOI: 10.3390/molecules24244426] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 11/28/2019] [Accepted: 12/03/2019] [Indexed: 12/24/2022] Open
Abstract
The use of foodstuff as natural medicines has already been established through studies demonstrating the pharmacological activities that they exhibit. Knowing the nutritional and pharmacological significance of foods enables the understanding of their role against several diseases. Among the foods that can potentially be considered as medicine, is sesame or Sesamum indicum L., which is part of the Pedaliaceae family and is composed of its lignans such as sesamin, sesamol, sesaminol and sesamolin. Its lignans have been widely studied and are known to possess antiaging, anticancer, antidiabetes, anti-inflammatory and antioxidant properties. Modern chronic diseases, which can transform into clinical diseases, are potential targets of these lignans. The prime example of chronic diseases is rheumatic inflammatory diseases, which affect the support structures and the organs of the body and can also develop into malignancies. In line with this, studies emphasizing the anti-inflammatory and anticancer activities of sesame have been discussed in this review.
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18
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Surapinit S, Sichaem J, Tip-pyang S. Non-redox Lipoxygenase Inhibitors from Nauclea orientalis. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Eight alkaloids recently isolated from the roots of Nauclea orientalis (L.) L. were obtained to evaluate the lipoxygenase (LOX) inhibitory activity. According to the LOX inhibitory assay, the cis isomer 1 (IC50 39.2±1.1 μM) was more potent than the trans isomer 2 (IC50 52.1±1.5 μM) (P < 0.05). Compound 5 (IC5057.8±1.8 μM) was more potent than 6 (IC50 97.6±3.4 μM), 3 (IC50 112.1±2.6 μM) and 4 (inactive) (P <0.05), respectively. Alkaloid glycosides 7 and 8 were completely inactive in a screening assay. All active indole alkaloids were inactive in DPPH and 13-HPOD scavenging assays at the concentration of 100 μM. Moreover, these compounds did not exhibit the interferential effects on the Fe2+/Fe3+ redox state as indicated by the iron reduction and oxidation assays. The enzyme kinetic study revealed that 1, 2 and 6 inhibited sb-LOX-1 through the mixed inhibition with a set of inhibition constants (K i and K' i) of 9 and 22, 17 and 46, and 16 and 32 μM, respectively. Indole alkaloids 3 and 5 were the uncompetitive and noncompetitive inhibitors with the K i of 24 and 8 μM. These findings undoubtedly demonstrated that these active indole alkaloids were non-redox lipoxygenase inhibitors.
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Affiliation(s)
- Serm Surapinit
- Unit of Excellent in Bioactive Natural Products, University of Phayao, Phayao 56000, Thailand
- Section of Clinical Chemistry, Department of Medical Technology, Faculty of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand
| | - Jirapast Sichaem
- Department of Chemistry, Faculty of Science and Technology, Thammasat University Lampang Center, Lampang 52190, Thailand
| | - Santi Tip-pyang
- Department of Chemistry, Faculty of Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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19
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Ratnasari N, Walters M, Tsopmo A. Antioxidant and lipoxygenase activities of polyphenol extracts from oat brans treated with polysaccharide degrading enzymes. Heliyon 2017; 3:e00351. [PMID: 28725872 PMCID: PMC5506884 DOI: 10.1016/j.heliyon.2017.e00351] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/28/2017] [Accepted: 07/05/2017] [Indexed: 01/09/2023] Open
Abstract
This study used polysaccharide degrading enzymes and protein precipitation to extract polyphenols from oats and to determine their bioactivity. Duplicate oat brans were treated with viscozyme (Vis), cellulase (Cel) or no enzyme (control, CTL) then, proteins were removed in one set (Vis1, Cel1, CTL1) and not in the other (Vis2, Cel2, CTL2). HPLC analyses showed that for cellulase treated brans, precipitation of proteins increased phenolic acids and avenanthramides by 14%. Meanwhile, a decreased of 67% and 20% respectively was found for viscozyme and control brans. The effect of protein precipitation on soluble polyphenols is therefore dependent of the carbohydrase, as proteins with different compositions will interact differently with other molecules. Radical scavenging data showed that Cel1 and Vis1 had higher quenching effects on ROO• radicals with activities of 22.1 ± 0.8 and 23.5 ± 1.2 μM Trolox Equivalents/g defatted brans. Meanwhile, CTL2 had the highest HO• radicals inhibition (49.4 ± 2.8%) compared to 10.8–32.3% for others. Samples that highly inhibited lipoxygenase (LOX), an enzyme involved in lipid oxidation were Cel1 (23.4 ± 2.3%) and CTL1 (18 ± 0.4%).
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Affiliation(s)
- Nisita Ratnasari
- Food Science and Nutrition Program, 1125 Colonel By Drive, K1S 5B6, Ottawa, ON, Canada
| | - Mallory Walters
- Food Science and Nutrition Program, 1125 Colonel By Drive, K1S 5B6, Ottawa, ON, Canada
| | - Apollinaire Tsopmo
- Food Science and Nutrition Program, 1125 Colonel By Drive, K1S 5B6, Ottawa, ON, Canada.,Institute of Biochemistry Carleton University, 1125 Colonel By Drive, K1S 5B6, Ottawa, ON, Canada
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20
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Dong X, Cao Y, Lin H, Yao Y, Guo Y, Wang T, Wu S, Wu Z. Solubilities of formononetin and daidzein in organic solvents: Effect of molecular structure and interaction on solvation process. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.02.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Yashaswini PS, Rao AGA, Singh SA. Inhibition of lipoxygenase by sesamol corroborates its potential anti-inflammatory activity. Int J Biol Macromol 2017; 94:781-787. [PMID: 27316769 DOI: 10.1016/j.ijbiomac.2016.06.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 06/13/2016] [Accepted: 06/14/2016] [Indexed: 01/18/2023]
Abstract
Reactive oxygen species, the byproducts of oxygenases reaction, when in excess, promote degenerative diseases like cardiovascular, cancer and arthritis. Sesame lignans- sesamin, sesamolin and the phenolic degradation product of sesamolin, sesamol, are empirically known for their health promoting properties like antioxidant, antimutagenic, antiaging and antiinflammatory activities. In the current study, the effect of sesamol on the inflammatory oxygenase - lipoxygenase (LOX) was investigated. Enzyme kinetics and spectroscopic techniques were used to understand the inhibition mechanism. Sesamol was a potent inhibitor of soy LOX-1. It inhibited soy LOX-1 in a dose dependent manner with IC50 value of 51.84μM and Ki of 4.9μM. Binding studies using circular dichroism and corroborated by surface plasmon resonance, revealed that sesamol does not bind or change the conformation of LOX. Further, sesamol prevented the conversion of inactive LOX (Fe2+) to active LOX (Fe3+) by arresting the oxidation state of iron and prolonging the lag phase by virtue of its ability to scavenge hydroperoxides. Understanding the mechanism of action of such molecules will help in their application and promotion as nutraceuticals.
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Affiliation(s)
- P S Yashaswini
- Department of Protein Chemistry & Technology, CSIR-Central Food Technological Research Institute, Mysuru, 570020, India
| | - A G Appu Rao
- Department of Protein Chemistry & Technology, CSIR-Central Food Technological Research Institute, Mysuru, 570020, India
| | - Sridevi A Singh
- Department of Protein Chemistry & Technology, CSIR-Central Food Technological Research Institute, Mysuru, 570020, India.
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22
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Yu J, Bi X, Yu B, Chen D. Isoflavones: Anti-Inflammatory Benefit and Possible Caveats. Nutrients 2016; 8:nu8060361. [PMID: 27294954 PMCID: PMC4924202 DOI: 10.3390/nu8060361] [Citation(s) in RCA: 170] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/19/2016] [Accepted: 06/02/2016] [Indexed: 12/15/2022] Open
Abstract
Inflammation, a biological response of body tissues to harmful stimuli, is also known to be involved in a host of diseases, such as obesity, atherosclerosis, rheumatoid arthritis, and even cancer. Isoflavones are a class of flavonoids that exhibit antioxidant, anticancer, antimicrobial, and anti-inflammatory properties. Increasing evidence has highlighted the potential for isoflavones to prevent the chronic diseases in which inflammation plays a key role, though the underlying mechanisms remain unclear. Recently, some studies have raised concerns about isoflavones induced negative effects like carcinogenesis, thymic involution, and immunosuppression. Therefore, this review aims to summarize the anti-inflammatory effects of isoflavones, unravel the underlying mechanisms, and present the potential health risks.
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Affiliation(s)
- Jie Yu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China.
| | - Xiaojuan Bi
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China.
| | - Bing Yu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China.
| | - Daiwen Chen
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China.
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Jiménez-Aspee F, Alberto MR, Quispe C, Soriano MDPC, Theoduloz C, Zampini IC, Isla MI, Schmeda-Hirschmann G. Anti-inflammatory activity of copao (Eulychnia acida Phil., Cactaceae) fruits. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2015; 70:135-140. [PMID: 25682221 DOI: 10.1007/s11130-015-0468-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Copao (Eulychnia acida Phil., Cactaceae) is an endemic species occurring in northern Chile. The edible fruits of this plant are valued for its acidic and refreshing taste. Phenolic-enriched extracts from copao fruit pulp and epicarp, collected in the Elqui and Limari river valleys, were assessed by its in vitro ability to inhibit the pro-inflammatory enzymes lipoxygenase (LOX) and cyclooxygenases (COX-1 and COX-2). At 100 μg/mL, pulp extracts showed better effect towards LOX than epicarp extract, while COX-2 inhibition was observed for both epicarp and pulp samples. In general, the extracts were inactive towards COX-1. A positive correlation was observed between the anti-inflammatory activity and the main phenolic compounds found in this fruit. Copao fruits from the Limari valley, a main place of collection and commercialization, showed major activity, adding evidence on the possible health-beneficial effects of this native Chilean fruit.
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Affiliation(s)
- Felipe Jiménez-Aspee
- Laboratorio de Química de Productos Naturales, Universidad de Talca, Instituto de Química de Recursos Naturales, Casilla 747, Talca, Chile
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Jiang S, Huang K, Liu W, Fu F, Xu J. Combined Autodock and comparative molecular field analysis study on predicting 5-lipoxygenase inhibitory activity of flavonoids isolated from Spatholobus suberectus Dunn. ACTA ACUST UNITED AC 2015; 70:103-13. [PMID: 26024248 DOI: 10.1515/znc-2014-4110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 04/27/2015] [Indexed: 11/15/2022]
Abstract
5-Lipoxygenase (5-LOX) plays a key role in the pathway of leukotriene biosynthesis. To predict the inhibitory activity of flavonoid inhibitors against 5-LOX from Spatholobus suberectus Dunn, Autodock 4.2 and comparative molecular field analysis (CoMFA) were employed. For the positive inhibitors (n=7), the value of the coefficient of determination (R2) between the binding free energy, calculated using Autodock 4.2, and the experimental pIC50 is 0.838. In the training set (n=21) of inhibitors against 5-LOX, the R2 of non-cross-validated partial least squares analysis between the actual and predicted pIC50 values, using the no-validation with the optimum number of components set to 6, is 0.997 (p=0.000). For the model generated by CoMFA, the contribution of electrostatic and steric factors are 0.522 and 0.478, respectively. Among the flavonoids of S. suberectus, liquiritigenin, catechin, butin, 3',4',7-trihydroxyflavone, plathymenin, and gallocatechin are the more potent inhibitors of 5-LOX based on the calculated binding free energy and the predicted pIC50 value.
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25
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Cyboran S, Strugała P, Włoch A, Oszmiański J, Kleszczyńska H. Concentrated green tea supplement: biological activity and molecular mechanisms. Life Sci 2015; 126:1-9. [PMID: 25703070 DOI: 10.1016/j.lfs.2014.12.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 11/05/2014] [Accepted: 12/17/2014] [Indexed: 01/18/2023]
Abstract
AIM This study was undertaken to determine the biological activity of a green tea supplement with respect to cells and erythrocyte membranes and the molecular mechanism of that activity. MAIN METHODS The extract's activity was evaluated on the basis of its hemolytic, antioxidant and antiinflammatory actions. In addition, the extract's effect on the physical properties of the erythrocyte membrane was examined. We also conducted a detailed analysis of supplement ingredients using high-yield liquid chromatography, supplemented with standard tests of total content of polyphenols and flavonoids in the supplement. KEY FINDINGS The study showed that green tea extract has a high antioxidant and anti-inflammatory capacity with no deleterious effect on red blood cells. The extract modifies the physical properties of the erythrocyte membrane, apparently by binding to its hydrophilic region, with consequent rigidity of the hydrophobic region, increased hydration and a moderate increase in its resistance to changes in tonicity of the medium. Because the extract's components anchor in the polar region of membrane lipids, they are able to effectively scavenge free radicals in the immediate vicinity of the membrane and hinder their diffusion into its interior. SIGNIFICANCE Green tea supplement at concentrations markedly exceeding the blood plasma physiological polyphenol concentrations has no destructive effect on the erythrocyte membrane. Due to the high content of flavan-3-ols, the supplement exhibits high biological activity, which makes it an alternative source of those substances to the commonly used infusion of green tea leaves.
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Affiliation(s)
- S Cyboran
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - P Strugała
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - A Włoch
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - J Oszmiański
- Department of Fruit, Vegetable and Cereal Technology, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - H Kleszczyńska
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
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26
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Surapinit S, Sri-in P, Tip-pyang S. Highly Potent Oligostilbene sbLOX-1 Inhibitor from Gnetum macrostachyum. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Isolated oligostilbenes from G. macrostachyum exhibited sbLOX-1 inhibitory activity with IC50 values ranging from 0.14–11.91 μM. Of these oligostilbenoids, 12 (IC0 0.14±0.01 μM), 10 (IC0 0.33±0.11 μM), 11 (IC50 0.49±0.05 μM) and 7 (IC50 1.03 ± 0.43 μM) were more active than nordihydroguaiaretic acid (NDGA) ( P < 0.05) which was the positive control. The enzyme kinetic analysis revealed that 7 and 11 inhibited sbLOX-1 noncompetitively with K i values of 11.2 and 71.4 nM. Compound 10 inhibited sbLOX-1 through mixed-competitive mechanisms ( K i = 13.8 nM and K' i 56.7 nM). Moreover, 12 was an uncompetitive inhibitor with a K i value of 0.8 nM. The inhibitory activity of oligostilbenes did not result from the antioxidant property, as demonstrated by DPPH and 13-HPOD scavenging assays. These compounds also showed ferric reducing capabilities, but had no effect in a Fe3+-bound sbLOX-1 model, as indicated by UV spectrophotometric and CD spectroscopic studies.
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Affiliation(s)
- Serm Surapinit
- Program in Biotechnology, Faculty of Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Piyawit Sri-in
- Department of Chemistry, Faculty of Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Santi Tip-pyang
- Department of Chemistry, Faculty of Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Patil D, Dash RP, Thakur SK, Pandya AN, Venkatesh P, Vasu KK, Nivsarkar M. Implication of novel thiazolo-thiophene derivative (MCD-KV-10) for management of asthma. J Enzyme Inhib Med Chem 2014; 30:229-39. [PMID: 24939098 DOI: 10.3109/14756366.2014.913035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT Asthma is multifaceted disease where many targets contribute towards its development and progression. Among these, adenosine receptor subtypes play a major role. OBJECTIVE MCD-KV-10, a novel thiazolo-thiophene was designed and evaluated pre-clinically for its implication in management of asthma. MATERIALS AND METHODS This compound showed good affinity and selectivity towards A(2A)/A3 adenosine receptor (AR) subtypes. Furthermore, MCD-KV-10 was evaluated for in vitro lipoxygenase inhibition activity; in vivo mast cell stabilization potential and in vivo anti-asthmatic activity was done in ovalbumin-induced airway inflammation model in guinea pigs. RESULTS The compound showed good (>57%) inhibition of lipoxygenase enzyme and also effectively protected mast cell degranulation (>63%). The compound showed good anti-asthmatic activity as inferred from the in vivo studies. DISCUSSION These results indicate that MCD-KV-10 has an inhibitory effect on airway inflammation. CONCLUSION Though, we have identified a potential candidate for management of asthma, further mechanistic studies are needed.
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Affiliation(s)
- Dhiraj Patil
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research - Ahmedabad, C/O - B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre , S. G. Highway, Thaltej, Ahmedabad, Gujarat , India
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28
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Mandal S, Dahuja A, Kar A, Santha IM. In vitro kinetics of soybean lipoxygenase with combinatorial fatty substrates and its functional significance in off flavour development. Food Chem 2014; 146:394-403. [PMID: 24176359 DOI: 10.1016/j.foodchem.2013.08.100] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 07/26/2013] [Accepted: 08/23/2013] [Indexed: 10/26/2022]
Abstract
Lipoxygenase (Lox) mediated oxidation of polyunsaturated fatty acids (PUFA) in mature soya seeds results in objectionable flavour. In the present study, Lox isozymes were purified to near homogeneity (107-fold). Lox-2 and 3 displayed remarkable kinetic preference (1.7 and 1.5-fold, respectively) for low PUFA ratios (LA/LeA) (PRs) among the selected PUFA combinations. Lox-1 displayed no specific preference. Pure Lox-1 displayed unbiased response towards substrates with marginal preference (1.2-fold) for linoleic acid at its optimum pH. Volatile compounds profiling showed a direct relationship between PRs and hexanal to trans-2-hexenal (1.47, 2.24 and 18.90 for 2, 7 and 15 PRs, respectively) ratio. The off-flavour determining parameters like TBA value, carbonyl value and lipid hydroperoxides (LHPODs) exhibited significant negative correlation (0.76, 0.74, 0.72; p<0.0001) in selected soya genotypes displaying varied PRs and significant positive correlation (0.89, 0.81. 0.89; p<0.0001) with ratio of PI (polyene index) to PRs - suggesting the plausible significance of PUFA ratios in biological lipid peroxidation.
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Affiliation(s)
- Somnath Mandal
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi 110012, India.
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Ribeiro D, Freitas M, Tomé SM, Silva AMS, Porto G, Cabrita EJ, Marques MMB, Fernandes E. Inhibition of LOX by flavonoids: a structure-activity relationship study. Eur J Med Chem 2014; 72:137-45. [PMID: 24368208 DOI: 10.1016/j.ejmech.2013.11.030] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 11/25/2013] [Accepted: 11/30/2013] [Indexed: 12/14/2022]
Abstract
The lipoxygenase (LOX) products have been identified as mediators of a series of inflammatory diseases, namely rheumatoid arthritis, inflammatory bowel disease, psoriasis, allergic rhinitis, atherosclerosis and certain types of cancer. Hence, LOX inhibitors are of interest for the modulation of these phenomena and resolution of the inflammatory processes. During LOX activity, peroxyl radical complexes are part of the reaction and may function as sources of free radicals. Thus antioxidants, such as flavonoids, capable of inhibiting lipid peroxidation and scavenging free radicals, may act as LOX inhibitors. The aim of this work was to assess the structure-activity relationship among a series of flavonoids concerning 5-LOX inhibition, through a systematic study of the inhibition of the formation of LTB4 in human neutrophils. The type of inhibition of the flavonoids was further studied using soybean LOX, type I, and Saturation Transfer Difference (1)H NMR (STD-(1)H NMR) was used to characterize the binding epitopes of the compounds to LOX-1. The obtained results reinforce flavonoids as effective inhibitors of LTB4 production in human neutrophils. It was also possible to establish a structure/activity relationship for the inhibitory activity and the type of inhibition.
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Affiliation(s)
- Daniela Ribeiro
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira n° 228, 4050-313 Porto, Portugal
| | - Marisa Freitas
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira n° 228, 4050-313 Porto, Portugal
| | - Sara M Tomé
- Departamento de Química & QOPNA, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Artur M S Silva
- Departamento de Química & QOPNA, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Graça Porto
- Hematologia Clínica, Hospital Geral de Santo António, 4050-011 Porto, Portugal
| | - Eurico J Cabrita
- Departamento de Química, REQUIMTE/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Lisboa, Portugal
| | - M Manuel B Marques
- Departamento de Química, REQUIMTE/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Lisboa, Portugal
| | - Eduarda Fernandes
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira n° 228, 4050-313 Porto, Portugal.
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Singh B, Nadkarni JR, Vishwakarma RA, Bharate SB, Nivsarkar M, Anandjiwala S. The hydroalcoholic extract of Cassia alata (Linn.) leaves and its major compound rhein exhibits antiallergic activity via mast cell stabilization and lipoxygenase inhibition. JOURNAL OF ETHNOPHARMACOLOGY 2012; 141:469-73. [PMID: 22449441 DOI: 10.1016/j.jep.2012.03.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 01/12/2012] [Accepted: 03/09/2012] [Indexed: 05/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Leaves of Cassia alata (family: Caesalpiniaceae) are ethnomedically claimed as anti-asthmatic. In the current study we aimed to investigate the anti-allergic activities of hydro-methanolic extract of Cassia alata (Linn.) and its constituents rhein and kaempferol on triple antigen/sheep serum-induced mast-cell degranulation in rats. MATERIALS AND METHODS Antiallergic activity of hydroalcoholic extract of Cassia alata along with its two components rhein and kaempferol was evaluated using in vivo mast cell stabilization assay. Inhibitory effect on lipoxygenase (LOX) enzyme was also evaluated in vitro. Further chemical standardization of Cassia alata extract was done using rhein and kaempferol by HPTLC-densitometric method. RESULTS The hydroalcoholic extract of Cassia alata significantly inhibited mast cell degranulation at 200mg/kg dose. Both chemical constituents rhein and kaempferol also showed potent (>76%) inhibition of mast-cell degranulation at 5mg/kg. Extract and rhein inhibited LOX enzyme with IC(50) values of 90.2 and 3.9μg/mL, respectively, whereas kaempferol was inactive. CONCLUSION Our results suggest that Cassia alata exhibit anti-allergic activity through mast cell stabilization and LOX inhibition. Thus, Cassia alata or its active constituents could be potential alternative treatment for allergic diseases.
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Affiliation(s)
- Baljinder Singh
- Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India.
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Czubinski J, Dwiecki K, Siger A, Lampart-Szczapa E, Nogala-Kalucka M. Interactions between Lupinus angustifolius seeds lipoxygenase and native phenolic compounds in the model system. Eur Food Res Technol 2012. [DOI: 10.1007/s00217-012-1737-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Chan KY, Mohamad K, Ooi AJA, Imiyabir Z, Chung LY. Bioactivity-guided fractionation of the lipoxygenase and cyclooxygenase inhibiting constituents from Chisocheton polyandrus Merr. Fitoterapia 2012; 83:961-7. [PMID: 22565147 DOI: 10.1016/j.fitote.2012.04.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 04/16/2012] [Accepted: 04/21/2012] [Indexed: 11/28/2022]
Abstract
Lipoxygenase (LOX)-inhibiting compounds from the leaves of Chisocheton polyandrus Merr. were isolated in this study using a bioactivity-guided fractionation technique. Two dammarane triterpenoids, dammara-20,24-dien-3-one (1) (IC(50)=0.69±0.07 μM) and 24-hydroxydammara-20,25-dien-3-one (2) (IC(50)=1.11±0.38 μM), were isolated and identified based on the soybean LOX assay. Dammara-20,24-dien-3-one (1) exhibited dual inhibition of both human 5-LOX (IC(50)=24.27±2.92 μM) and cyclooxygenase-2 (COX-2) (IC(50)=3.17±0.90 μM), whereas 24-hydroxydammara-20,25-dien-3-one (2) did not exhibit any significant inhibitory effects. This report is the first to detail the inhibition of LOX and COX by both C. polyandrus and its isolated compounds.
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Affiliation(s)
- Kit Yee Chan
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Dwiecki K, Siger A, Czubiński J, Nogala-Kałucka M, Lampart-Szczapa E. The Interactions Between Rapeseed Lipoxygenase and Native Polyphenolic Compounds in a Model System. J AM OIL CHEM SOC 2012; 89:379-387. [PMID: 22514355 PMCID: PMC3324947 DOI: 10.1007/s11746-011-1923-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 06/15/2011] [Accepted: 07/29/2011] [Indexed: 11/30/2022]
Abstract
The focus of the present research was to study inhibition of lipoxygenase activity by rapeseed native polyphenols and the interactions between those compounds and the enzyme. The enzyme and polyphenolic compounds (polyphenols, phenolic acids) were extracted from rapeseed (Brassica napus) varieties Aviso and PR45DO3. The total phenolic compounds concentration in tested rapeseed was 1,485-1,691 mg/100 g d.m. (dry matter) and the free phenolic acids content in both rapeseed varieties was about 76 μg/100 g d.m. The isolated proteins showed lipoxygenase activity. Prooxidant properties of phenolic compounds in the presence of lipoxygenase and linoleic acid were observed rather in the case of extracts containing a relatively high concentration of miscellaneous polyphenols. Antioxidant properties were recorded in the case of phenolic acid extracts which contain only 1.4-1.9% of phenolics present in raw phenolic extracts. We propose that the prooxidant effect of phenolic compounds comes from quinone and oxidized polyphenols formation. The observed antioxidant activity of phenolic acid extracts is probably due to their ability to scavenge free radicals formed from linoleic acid. However, reduction of lipoxygenase ferric to ferrous ions, which prevent the activation of the enzyme and inhibited its activity, was also observed.
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Affiliation(s)
- Krzysztof Dwiecki
- Department of Biochemistry and Food Analysis, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
| | - Aleksander Siger
- Department of Biochemistry and Food Analysis, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
| | - Jarosław Czubiński
- Department of Biochemistry and Food Analysis, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
| | - Małgorzata Nogala-Kałucka
- Department of Biochemistry and Food Analysis, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
| | - Eleonora Lampart-Szczapa
- Department of Biochemistry and Food Analysis, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
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Carrara VDS, Amado CB, de Melo JO, Mandarino JMG, Cortez DAG. Evaluation of soybean methanol fraction on acute inflammation. J Med Food 2011; 14:1570-5. [PMID: 21663519 DOI: 10.1089/jmf.2010.0320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Soybeans have been of interest of researchers because of the presence of isoflavones, a subclass of flavonoids, which have demonstrated anti-inflammatory activity. The aim of this study was investigate the anti-inflammatory activity of the methanol fraction from soybean, which contains mainly isoflavone glucosides and malonylglucosides. The anti-inflammatory activity of the methanol fraction from soybean was studied using croton oil-induced mouse ear edema and carrageenan-induced pleurisy models. The methanol fraction inhibited the ear edema in a dose-dependent manner: 0.625 mg/kg by 44.23% (P<.05), 1.25 mg/kg by 60.68% (P<.01), and 2.5 mg/kg by 65.68% (P<.01). Myeloperoxidase enzyme activity was reduced at the dose of 2.5 mg/kg (64.79%, P<.05). No effects were seen on carrageenan-induced pleurisy at different doses of the methanol fraction (100 or 400 mg/kg). These results demonstrated that the methanol fraction containing conjugated isoflavones showed topical anti-inflammatory activity. There was no acute toxicity in Swiss mice after oral administration of the fraction, at doses of 1,000, 2,000, 3,000, and 4,000 mg/kg.
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Sneharani AH, Singh SA, Srinivas P, Rao AGA. Inhibition of lipoxygenase-1 by tetrahydrocurcumin. Eur Food Res Technol 2011. [DOI: 10.1007/s00217-011-1541-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Cardozo M, Ordoñez R, Alberto M, Zampini I, Isla M. Antioxidant and anti-inflammatory activity characterization and genotoxicity evaluation of Ziziphus mistol ripe berries, exotic Argentinean fruit. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.02.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Synthetic and natural iron chelators: therapeutic potential and clinical use. Future Med Chem 2011; 1:1643-70. [PMID: 21425984 DOI: 10.4155/fmc.09.121] [Citation(s) in RCA: 161] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Iron-chelation therapy has its origins in the treatment of iron-overload syndromes. For many years, the standard for this purpose has been deferoxamine. Recently, considerable progress has been made in identifying synthetic chelators with improved pharmacologic properties relative to deferoxamine. Most notable are deferasirox (Exjade(®)) and deferiprone (Ferriprox(®)), which are now available clinically. In addition to treatment of iron overload, there is an emerging role for iron chelators in the treatment of diseases characterized by oxidative stress, including cardiovascular disease, atherosclerosis, neurodegenerative diseases and cancer. While iron is not regarded as the underlying cause of these diseases, it does play an important role in disease progression, either through promotion of cellular growth and proliferation or through participation in redox reactions that catalyze the formation of reactive oxygen species and increase oxidative stress. Thus, iron chelators may be of therapeutic benefit in many of these conditions. Phytochemicals, many of which bind iron, may also owe some of their beneficial properties to iron chelation. This review will focus on the advances in iron-chelation therapy for the treatment of iron-overload disease and cancer, as well as neurodegenerative and chronic inflammatory diseases. Established and novel iron chelators will be discussed, as well as the emerging role of dietary plant polyphenols that effectively modulate iron biochemistry.
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VICAŞ SIMONAIOANA, CHEDEA VERONICASANDA, SOCACIU CARMEN. INHIBITORY EFFECTS OF ISOFLAVONES ON SOYBEAN LIPOXYGENASE-1 ACTIVITY. J Food Biochem 2011. [DOI: 10.1111/j.1745-4514.2010.00405.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Maciel ME, Castro JA, Castro GD. Inhibition of rat mammary microsomal oxidation of ethanol to acetaldehyde by plant polyphenols. Hum Exp Toxicol 2010; 30:656-64. [PMID: 21112901 DOI: 10.1177/0960327110377522] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We previously reported that the microsomal fraction from rat mammary tissue is able to oxidize ethanol to acetaldehyde, a mutagenic-carcinogenic metabolite, depending on the presence of NADPH and oxygen but not inhibited by carbon monoxide or other cytochrome P450 inhibitors. The process was strongly inhibited by diphenyleneiodonium, a known inhibitor of NADPH oxidase, and by nordihydroguaiaretic acid, an inhibitor of lipoxygenases. This led us to suggest that both enzymes could be involved. With the purpose of identifying natural compounds present in food with the ability to decrease the production of acetaldehyde in mammary tissue, in the present studies, several plant polyphenols having inhibitory effects on lipoxygenases and of antioxidant nature were tested as potential inhibitors of the rat mammary tissue microsomal pathway of ethanol oxidation. We included in the present screening study 32 polyphenols having ready availability and that were also tested against the rat mammary tissue cytosolic metabolism of ethanol to acetaldehyde. Several polyphenols were also able to inhibit the microsomal ethanol oxidation at concentrations as low was 10-50 μM. The results of these screening experiments suggest the potential of several plant polyphenols to prevent in vivo production and accumulation of acetaldehyde in mammary tissue.
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Affiliation(s)
- María Eugenia Maciel
- Centro de Investigaciones Toxicológicas (CEITOX-CITEFA/ CONICET), J B de La Salle 4397, Villa Martelli, Buenos Aires, Argentina
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González EA, García EM, Nazareno MA. Free radical scavenging capacity and antioxidant activity of cochineal (Dactylopius coccus C.) extracts. Food Chem 2010. [DOI: 10.1016/j.foodchem.2009.06.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nakada M, Imai M, Suzuki I. Impact of ethanol addition on the solubility of various soybean isoflavones in supercritical carbon dioxide and the effect of glycoside chain in isoflavones. J FOOD ENG 2009. [DOI: 10.1016/j.jfoodeng.2009.06.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
Health benefits associated with diets rich in anthocyanins are ascribed to multilevel biological activities including antioxidative and anti-inflammatory effects. The present study addresses lipoxygenase inhibition as a mechanism by which anthocyanins may exert health promoting effects. The inhibitory potential of delphinidin (Dp), cyanidin (Cy), peonidin (Pn), and malvidin (Mv) glycosides, i.e., 3-O-glucosides, 3-O-galactosides, and 3-O-arabinosides as well as their aglycons was analyzed by using soybean lipoxygenase-1 and human neutrophil granulocyte 5-lipoxygenase. The determined IC(50) values comprised a wide range, i.e., from the sub-microM level until practically no effect of inhibition (Mv and its glycosides). With IC(50) values of 0.43 and 0.49 microM Dp 3-O-glucoside (Dp3glc) and Dp 3-O-galactoside (Dp3gal) were found to be the most effective soybean lipoxygenase-1 inhibitors; their strong inhibitory potential was also reflected by the IC(50) values determined for these anthocyanins in the 5-lipoxygenase inhibition exhibiting 2.15 and 6.9 microM, respectively. As to the mechanism of inhibition, experiments carried out with lipoxygenase-1 revealed the uncompetitive type. Considering the powerful inhibitory properties of Dp glycosides in relation to their currently known availability in human metabolism, in vivo prevention of inflammatory diseases by these anthocyanins could be envisaged.
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Affiliation(s)
- Bastian Knaup
- Food Chemistry, University of Würzburg, Am Hubland, Würzburg, Germany
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Flavonoids as anti-inflammatory agents: implications in cancer and cardiovascular disease. Inflamm Res 2009; 58:537-52. [PMID: 19381780 DOI: 10.1007/s00011-009-0037-3] [Citation(s) in RCA: 590] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Revised: 01/09/2009] [Accepted: 03/16/2009] [Indexed: 12/11/2022] Open
Abstract
Chronic inflammation is being shown to be increasingly involved in the onset and development of several pathological disturbances such as arteriosclerosis, obesity, diabetes, neurodegenerative diseases and even cancer. Treatment for chronic inflammatory disorders has not been solved, and there is an urgent need to find new and safe anti-inflammatory compounds. Flavonoids belong to a group of natural substances occurring normally in the diet that exhibit a variety of beneficial effects on health. The anti-inflammatory properties of flavonoids have been studied recently, in order to establish and characterize their potential utility as therapeutic agents in the treatment of inflammatory diseases. Several mechanisms of action have been proposed to explain in vivo flavonoid anti-inflammatory actions, such as antioxidant activity, inhibition of eicosanoid generating enzymes or the modulation of the production of proinflammatory molecules. Recent studies have also shown that some flavonoids are modulators of proinflammatory gene expression, thus leading to the attenuation of the inflammatory response. However, much work remains to be done in order to achieve definitive conclusions about their potential usefulness. This review summarizes the known mechanisms involved in the anti-inflammatory activity of flavonoids and the implications of these effects on the protection against cancer and cardiovascular disease.
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Leifert WR, Abeywardena MY. Grape seed and red wine polyphenol extracts inhibit cellular cholesterol uptake, cell proliferation, and 5-lipoxygenase activity. Nutr Res 2008; 28:842-50. [DOI: 10.1016/j.nutres.2008.09.001] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Revised: 09/04/2008] [Accepted: 09/04/2008] [Indexed: 01/08/2023]
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Oliveira MIP, Piovesan ND, José IC, Barros EG, Moreira MA, Oliveira LO. Protein, Oil, and Isoflavone Contents in Lipoxygenase- and Kunitz Trypsin Inhibitor-Deficient Soybean Seeds. Chromatographia 2007. [DOI: 10.1365/s10337-007-0339-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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