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Nayak A, Panda SS, Dwivedi I, Meena S, Aich P. Role of gut microbial-derived metabolites and other select agents on adipocyte browning. Biochem Biophys Res Commun 2024; 737:150518. [PMID: 39142136 DOI: 10.1016/j.bbrc.2024.150518] [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: 07/04/2024] [Revised: 07/26/2024] [Accepted: 08/06/2024] [Indexed: 08/16/2024]
Abstract
AIMS Metabolic disease is a multifaceted condition characterized by the disruption of numerous metabolic parameters within the host. Its prevalence has surged significantly in recent years and it has become a prominent non-communicable disease worldwide. The effect of gut microbiota on various beige fat induction is well studied, while the mechanisms behind the link remain unclear. Given that gut microbiota-derived metabolites (meta-metabolites) secreted in the gut serve as a key mode of communication with their host through direct circulation or indirect host physiology modification, understanding the effect of meta-metabolites on adipose tissue is essential. METHODOLOGY In our previous in-vivo studies, we observed a correlation between gut microbiota and the formation of beige fat. In this study, we further aimed to validate this correlation by treating the adipocyte cell line (3T3-L1) with meta-metabolites collected from the cecum of mice exhibiting beige adipose tissue formation. Additionally, we treated the adipocyte cell line with known beige fat inducers (L-Rhamnose and Ginsenoside) to assess meta-metabolites' efficacy on beige fat formation. KEY FINDINGS Upon treatment with the meta-metabolites from the antibiotic-treated mice, we observed a significant increase in lipid metabolism and beige-specific gene expression. Analyzing the metabolites in these cells revealed that a set of metabolites potentially govern adipocytes, contributing to a metabolically active state. These effects were at par or even better than those of cells treated with L-Rhamnose or Ginsenoside. SIGNIFICANCE This research sheds light on the intricate interplay between microbial metabolites and adipose tissue, offering valuable clues for understanding and potentially manipulating these processes for therapeutic purposes.
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Affiliation(s)
- Akankshya Nayak
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Jatni, 752050, India; Homi Bhabha National Institute, Training School Complex, Mumbai, 400094, India; Centre for Interdisciplinary Science (CIS), National Institute of Science Education and Research (NISER), Jatni, 752050, India
| | - Swati Sagarika Panda
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Jatni, 752050, India; Homi Bhabha National Institute, Training School Complex, Mumbai, 400094, India; Centre for Interdisciplinary Science (CIS), National Institute of Science Education and Research (NISER), Jatni, 752050, India
| | - Isha Dwivedi
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Jatni, 752050, India; Homi Bhabha National Institute, Training School Complex, Mumbai, 400094, India; Centre for Interdisciplinary Science (CIS), National Institute of Science Education and Research (NISER), Jatni, 752050, India
| | - Shivani Meena
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Jatni, 752050, India; Homi Bhabha National Institute, Training School Complex, Mumbai, 400094, India; Centre for Interdisciplinary Science (CIS), National Institute of Science Education and Research (NISER), Jatni, 752050, India
| | - Palok Aich
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Jatni, 752050, India; Homi Bhabha National Institute, Training School Complex, Mumbai, 400094, India; Centre for Interdisciplinary Science (CIS), National Institute of Science Education and Research (NISER), Jatni, 752050, India.
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Tong Z, Zhang L, Liao W, Wang Y, Gao Y. Extraction, identification and application of gliadin from gluten: Impact of pH on physicochemical properties of unloaded- and lutein-loaded gliadin nanoparticles. Int J Biol Macromol 2023; 253:126638. [PMID: 37673163 DOI: 10.1016/j.ijbiomac.2023.126638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/08/2023]
Abstract
In the present study, high purity gliadin was extracted from gluten by the marginally modified Osborne method and the effect of different pHs in the aqueous ethanol on the physicochemical properties of unloaded gliadin nanoparticles (UGNs) and lutein-loaded gliadin nanoparticles (LGNs) was investigated. The results revealed that the formation of UGNs and LGNs at diverse pHs was driven by a conjunction of hydrogen bonding, electrostatic interactions and hydrophobic effects, but their dominant roles varied at different pHs. pH also significantly impacted the surface hydrophobicity, secondary structure and aromatic amino acid microenvironment of UGNs and LGNs. LGNs at pH 5.0 and at pH 9.0 exhibited better loading capacity and could reach 9.7884 ± 0.0006 % and 9.7360 ± 0.0017 %, respectively. These two samples also had greater photostability and thermal stability. Half-lives of LGNs at pH 5.0 were 2.185 h and 54.579 h, respectively. Half-lives of LGNs at pH 9.0 were 2.937 h and 49.159 h, respectively. LGNs at pH 5.0 and LGNs at pH 9.0 also had higher bioaccessibility of lutein, with 15.98 ± 0.04 % and 15.27 ± 0.03 %, respectively. These findings yielded precious inspirations for designing innovative lutein delivery system.
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Affiliation(s)
- Zhen Tong
- Key Laboratory of Healthy Beverages, China National light Industry Council, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Liang Zhang
- Key Laboratory of Healthy Beverages, China National light Industry Council, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Wenyan Liao
- Key Laboratory of Healthy Beverages, China National light Industry Council, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Yuan Wang
- Key Laboratory of Healthy Beverages, China National light Industry Council, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Yanxiang Gao
- Key Laboratory of Healthy Beverages, China National light Industry Council, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
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Polyunsaturated Lipids in the Light-Exposed and Prooxidant Retinal Environment. Antioxidants (Basel) 2023; 12:antiox12030617. [PMID: 36978865 PMCID: PMC10044808 DOI: 10.3390/antiox12030617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/26/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
The retina is an oxidative stress-prone tissue due to high content of polyunsaturated lipids, exposure to visible light stimuli in the 400–480 nm range, and high oxygen availability provided by choroidal capillaries to support oxidative metabolism. Indeed, lipids’ peroxidation and their conversion into reactive species promoting inflammation have been reported and connected to retinal degenerations. Here, we review recent evidence showing how retinal polyunsaturated lipids, in addition to oxidative stress and damage, may counteract the inflammatory response triggered by blue light-activated carotenoid derivatives, enabling long-term retina operation despite its prooxidant environment. These two aspects of retinal polyunsaturated lipids require tight control over their synthesis to avoid overcoming their protective actions by an increase in lipid peroxidation due to oxidative stress. We review emerging evidence on different transcriptional control mechanisms operating in retinal cells to modulate polyunsaturated lipid synthesis over the life span, from the immature to the ageing retina. Finally, we discuss the antioxidant role of food nutrients such as xanthophylls and carotenoids that have been shown to empower retinal cells’ antioxidant responses and counteract the adverse impact of prooxidant stimuli on sight.
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Shamarao N, Chethankumar M. Antiobesity drug-likeness properties and pancreatic lipase inhibition of a novel low molecular weight lutein oxidized product, LOP6. Food Funct 2022; 13:6036-6055. [PMID: 35615990 DOI: 10.1039/d1fo04064b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elevated expression of peroxisome proliferator-activated receptor-gamma (PPAR-γ), a key regulator of adipogenesis, leads to lipid accumulation and obesity. Although orlistat is effective for obesity, flatus with discharge, faecal urgency, oily evacuation and other allied side effects limit its usage. Thus, natural product-based drug intervention is the future of research and development of novel treatment. We synthesized and characterized total lutein oxidized products (LOPs) by exposing lutein to direct sunlight with a solar intensity of 5.89 kW h m-2 day-1 and at 31 ± 2 °C for 1-10 days. Total LOPs were analyzed on C18 and structural elucidation was carried on LCMS/MS-TOF. The pancreatic lipase inhibition kinetics was estimated. The binding effects of LOP6 (fragmented peak 6) on PPAR-γ, pancreatic lipase, pharmacokinetic properties and inhibition studies were analysed. Histological evaluation of liver and adipose tissues was performed to confirm the antiobesity effect of total LOPs. The yield of extracted lutein purified from shade-dried marigold flower petals was 6%. Total LOPs were formed on the 10th day upon exposure of lutein to direct sunlight. Total LOPs on the C18 column fragmented into eight oxidized products (LOP1 to LOP8). The total LOPs showed significant inhibition of pancreatic lipase activity with an IC50 of 1.6953 μg ml-1, and Km and Vmax of 3.05 μg and 1.19 μg s-1 respectively following mixed type of inhibition. The LOP6 [4-((1E,3E,5E)-3,7-dimethylocta-1,3,5,7-tetraen-1-yl)-3,5,5-trimethylcyclohex-3-enol] with an approximate molecular mass of 274.25 showed a binding energy of -5.40 kcal mol-1 with a Ki of 109.43 μM for PPAR-γ and a docking score of -5.35 kcal mol-1 with a Ki of 119.4 μM for pancreatic lipase. The IC50 of LOP6 was 11.8420 μg ml-1, and Km and Vmax were 2.519 μg and 1.294 μg s-1. The pharmacokinetic properties such as solubility, permeability, bioavailability, and topological polar surface area when tested with LOP6 were significantly better than those of lutein alone. The histological examination of the liver and adipose tissue revealed that all three doses of total LOPs were effective in alleviating the ballooning and vesicular degeneration of hepatocytes and invasion of inflammatory cells in the adipose tissue. Total LOPs and LOP6 inhibited pancreatic lipase activity in vitro. LOP6 showed a better docking score for PPAR-γ and pancreatic lipase in comparison to orlistat. Histological data showed that the total LOPs exerted antiobesity activity. Thus, LOPs might provide a novel treatment approach for obesity.
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Affiliation(s)
- Nagashree Shamarao
- Research Scholar, JSS Research Foundation, SJCE Technical Institutions Campus, Mysuru-570006, Karnataka, India
| | - Mukunda Chethankumar
- Postgraduate Department of Biochemistry, JSS College of Arts Commerce and Science (Autonomous), Ooty Road, Mysuru-570025, Karnataka, India.
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Cheng WY, Yeh WJ, Ko J, Huang YL, Yang HY. Consumption of Dehulled Adlay Improved Lipid Metabolism and Inflammation in Overweight and Obese Individuals after a 6-Week Single-Arm Pilot Study. Nutrients 2022; 14:nu14112250. [PMID: 35684050 PMCID: PMC9182814 DOI: 10.3390/nu14112250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 11/16/2022] Open
Abstract
Obesity is a major public health concern worldwide with a rising prevalence. Diets containing whole grains have been demonstrated to benefit body composition and inflammatory conditions in individuals at a high risk of metabolic disorders. This study investigated the effects of dehulled adlay on blood lipids and inflammation in overweight and obese adults. We recruited 21 individuals with abdominal obesity to participate in a 6-week experiment, providing them 60 g of dehulled adlay powder per day as a substitute for their daily staple. Before and after the 6-week intervention, we performed anthropometric analyses and measured blood lipid profiles, adipokines, and markers of inflammation. At the end of the study, the percentage of body fat mass, blood total cholesterol, and triglyceride levels were significantly decreased compared with the baseline. Plasma tumor necrosis factor alpha, interleukin-6, leptin, and malondialdehyde levels were also reduced. In addition, participants with higher basal blood lipid levels exhibited enhanced lipid lowering effects after the dehulled adlay intervention. These results suggest that a dietary pattern containing 60 g of dehulled adlay per day may have a beneficial effect on lipid profiles and inflammatory markers in individuals that are overweight and obese.
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Affiliation(s)
- Wei-Yi Cheng
- Department of Nutrition, I-Shou University, No. 8 Yida Rd., Jiaosu Village, Yanchao District, Kaohsiung City 82445, Taiwan;
| | - Wan-Ju Yeh
- Graduate Program of Nutrition Science, National Taiwan Normal University, Taipei 116059, Taiwan;
| | - Jung Ko
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan;
| | - Ya-Ling Huang
- Department of Laboratory Medicine, E-Da Hospital, No. 1 Yida Rd., Jiaosu Village, Yanchao District, Kaohsiung City 82445, Taiwan;
| | - Hsin-Yi Yang
- Department of Nutritional Science, Fu Jen Catholic University, No. 510, Zhongzheng Rd., Xinzhuang Dist., New Taipei City 24205, Taiwan
- Correspondence: ; Tel.: +886-2-29053621; Fax: +886-2-29021215
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Protective Effects of a Lutein Ester Prodrug, Lutein Diglutaric Acid, against H 2O 2-Induced Oxidative Stress in Human Retinal Pigment Epithelial Cells. Int J Mol Sci 2021; 22:ijms22094722. [PMID: 33946898 PMCID: PMC8125252 DOI: 10.3390/ijms22094722] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/26/2021] [Accepted: 04/26/2021] [Indexed: 12/21/2022] Open
Abstract
Oxidative stress-induced cell damage and death of the retinal pigmented epithelium (RPE), a polarized monolayer that maintains retinal health and homeostasis, lead to the development of age-related macular degeneration (AMD). Several studies show that the naturally occurring antioxidant Lutein (Lut) can protect RPE cells from oxidative stress. However, the poor solubility and low oral bioavailability limit the potential of Lut as a therapeutic agent. In this study, lutein diglutaric acid (Lut-DG), a prodrug of Lut, was synthesized and its ability to protect human ARPE-19 cells from oxidative stress was tested compared to Lut. Both Lut and Lut-DG significantly decreased H2O2-induced reactive oxygen species (ROS) production and protected RPE cells from oxidative stress-induced death. Moreover, the immunoblotting analysis indicated that both drugs exerted their protective effects by modulating phosphorylated MAPKs (p38, ERK1/2 and SAPK/JNK) and downstream molecules Bax, Bcl-2 and Cytochrome c. In addition, the enzymatic antioxidants glutathione peroxidase (GPx) and catalase (CAT) and non-enzymatic antioxidant glutathione (GSH) were enhanced in cells treated with Lut and Lut-DG. In all cases, Lut-DG was more effective than its parent drug against oxidative stress-induced damage to RPE cells. These findings highlight Lut-DG as a more potent compound than Lut with the protective effects against oxidative stress in RPE cells through the modulation of key MAPKs, apoptotic and antioxidant molecular pathways.
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