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Nguyen NPK, Tran KN, Nguyen LTH, Shin HM, Yang IJ. Effects of Essential Oils and Fragrant Compounds on Appetite: A Systematic Review. Int J Mol Sci 2023; 24:ijms24097962. [PMID: 37175666 PMCID: PMC10178777 DOI: 10.3390/ijms24097962] [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: 03/13/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Appetite dysregulation is one of the factors contributing to anorexia, bulimia nervosa, obesity, and diabetes. Essential oils or fragrant compounds have been proven to regulate food intake and energy expenditure; hence, this study aimed to summarize their effects on appetite and the underlying mechanisms. The PubMed and Web of Science databases were searched until July 2022. Only two of the 41 studies were performed clinically, and the remaining 39 used animal models. Oral administration was the most common route, and a dosage range of 100-2000 mg/kg for mice or 2-32 mg/kg for rats was applied, with a duration of 12 days to 4 weeks, followed by inhalation (10-6-10-3 mg/cage or 10-9-10-2 mg/cm3 within 1 h). Approximately 11 essential oil samples and 22 fragrant compounds were found to increase appetite, while 12 essential oils and seven compounds decreased appetite. These fragrant components can exert appetite-regulating effects via leptin resistance, the activity of sympathetic/parasympathetic nerves, or the mRNA expression of neuropeptide Y (NPY)/agouti-related protein (AgRP), cocaine- and amphetamine-regulated transcript (CART)/proopiomelanocortin (POMC) in the hypothalamus. Fragrance memory and cognitive processes may also play roles in appetite regulation. The findings of this study accentuate the potential of essential oils and fragrant compounds to regulate appetite and eating disorders.
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Affiliation(s)
- Nhi Phuc Khanh Nguyen
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea
| | - Khoa Nguyen Tran
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea
| | - Ly Thi Huong Nguyen
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea
| | - Heung-Mook Shin
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea
| | - In-Jun Yang
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea
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2
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Chávez-Delgado EL, Jacobo-Velázquez DA. Essential Oils: Recent Advances on Their Dual Role as Food Preservatives and Nutraceuticals against the Metabolic Syndrome. Foods 2023; 12:1079. [PMID: 36900596 PMCID: PMC10000519 DOI: 10.3390/foods12051079] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
Essential oils (EO) are compounds synthesized by plants as secondary products and are a complex mixture of volatile molecules. Studies have demonstrated their pharmacological activity in the prevention and treatment of metabolic syndrome (MetS). Moreover, they have been used as antimicrobial and antioxidant food additives. The first part of this review discusses the role of EO as nutraceuticals to prevent metabolic syndrome-related disorders (i.e., obesity, diabetes, and neurodegenerative diseases), showing results from in vitro and in vivo studies. Likewise, the second part describes the bioavailability and mechanisms of action of EO in preventing chronic diseases. The third part presents the application of EO as food additives, pointing out their antimicrobial and antioxidant activity in food formulations. Finally, the last part explains the stability and methods for encapsulating EO. In conclusion, EO dual role as nutraceuticals and food additives makes them excellent candidates to formulate dietary supplements and functional foods. However, further investigation is needed to understand EO interaction mechanisms with human metabolic pathways and to develop novel technological approaches to enhance EO stability in food systems to scale up these processes and, in this way, to overcome current health problems.
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Affiliation(s)
- Emily L. Chávez-Delgado
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Ave. General Ramon Corona 2514, Zapopan 45138, Jalisco, Mexico
| | - Daniel A. Jacobo-Velázquez
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Ave. General Ramon Corona 2514, Zapopan 45138, Jalisco, Mexico
- Tecnologico de Monterrey, The Institute for Obesity Research, Ave. General Ramon Corona 2514, Zapopan 45201, Jalisco, Mexico
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3
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Hong SJ, Kim DS, Lee J, Boo CG, Youn MY, Le B, Kim JK, Shin EC. Inhalation of low-dose basil (Ocimum basilicum) essential oil improved cardiovascular health and plasma lipid markers in high fat diet-induced obese rats. J Food Sci 2022; 87:2450-2462. [PMID: 35591766 DOI: 10.1111/1750-3841.16196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 02/06/2023]
Abstract
This study investigated the antiobesogenic effects of the inhalation of volatile compounds derived from basil essential oil (BEO) in high fat diet-induced obese rats. A total of 47 volatile compounds were identified in BEO using gas chromatography-mass spectrometry. Major volatile compounds identified by olfactory testing include linalool oxide, linalool, 1-menthene, and carvone. White adipose tissue significantly decreased in the rats that inhaled 0.3% BEO (more than +10%) compared to the control. Plasma marker analysis showed increased high-density lipoprotein-cholesterol (ca. double fold) and decreased low-density lipoprotein-cholesterol (more than -30%) levels in inhaled 1% BEO group compared to the control. Leptin significantly decreased in the 0.3 and 1% BEO groups (more than -70 and -85%, respectively). Last, systolic blood pressure at week 12 was significantly lower in inhaled 1% BEO group (more than -15%) compared to the control. The results of this study suggest that BEO inhalation may be effective in managing plasma lipid markers (cholesterols and leptin) and possibly metabolic disorders such as obesity. Practical Application: Changes in metabolic health markers, which are effected by inhalation of volatiles in basil (Ocimum basilicum) essential oil, will provide physiological variations in vivo to the public. In this study, the opposite effects were identified between 0.3% and 1% inhalation, respectively. Therefore, our findings will provide optimized and useful guidance for inhalation of basil essential oil.
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Affiliation(s)
- Seong Jun Hong
- Department of Food Science/GreenBio Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Da-Som Kim
- Department of Food Science/GreenBio Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Jookyeong Lee
- Faculty of Health, School of Exercise and Nutrition Sciences, Deakin University, Burwood, Australia
| | - Chang Guk Boo
- Department of Food Science/GreenBio Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Moon Yeon Youn
- Department of Food Science/GreenBio Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Brandy Le
- Department of Behavioral Health and Nutrition, University of Delaware, Newark, Delaware, USA
| | - Jae Kyeom Kim
- Department of Behavioral Health and Nutrition, University of Delaware, Newark, Delaware, USA
| | - Eui-Cheol Shin
- Department of Food Science/GreenBio Science, Gyeongsang National University, Jinju, Republic of Korea
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Hong SJ, Yoon S, Jo SM, Jeong H, Youn MY, Kim YJ, Kim JK, Shin EC. Olfactory Stimulation by Fennel (Foeniculum vulgare Mill.) Essential Oil Improves Lipid Metabolism and Metabolic Disorders in High Fat-Induced Obese Rats. Nutrients 2022; 14:nu14040741. [PMID: 35215391 PMCID: PMC8877786 DOI: 10.3390/nu14040741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 01/28/2022] [Accepted: 02/07/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, odor components were analyzed using gas chromatography/mass spectrometry (GC/MS) and solid-phase microextraction (SPME), and odor-active compounds (OACs) were identified using GC-olfactometry (GC-O). Among the volatile compounds identified through GC-O, p-anisaldehyde, limonene, estragole, anethole, and trans-anethole elicit the fennel odor. In particular, trans-anethole showed the highest odor intensity and content. Changes in body weight during the experimental period showed decreasing values of fennel essential oil (FEO)-inhaled groups, with both body fat and visceral fat showing decreased levels. An improvement in the body’s lipid metabolism was observed, as indicated by the increased levels of cholesterol and triglycerides and decreased levels of insulin in the FEO-inhaled groups compared to group H. Furthermore, the reduction in systolic blood pressure and pulse through the inhalation of FEO was confirmed. Our results indicated that FEO inhalation affected certain lipid metabolisms and cardiovascular health, which are obesity-related dysfunction indicators. Accordingly, this study can provide basic research data for further research as to protective applications of FEO, as well as their volatile profiles.
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Affiliation(s)
- Seong Jun Hong
- Department of Food Science, Gyeongsang National University, Jinju 52725, Korea; (S.J.H.); (S.Y.); (S.M.J.); (H.J.); (M.Y.Y.)
| | - Sojeong Yoon
- Department of Food Science, Gyeongsang National University, Jinju 52725, Korea; (S.J.H.); (S.Y.); (S.M.J.); (H.J.); (M.Y.Y.)
| | - Seong Min Jo
- Department of Food Science, Gyeongsang National University, Jinju 52725, Korea; (S.J.H.); (S.Y.); (S.M.J.); (H.J.); (M.Y.Y.)
| | - Hyangyeon Jeong
- Department of Food Science, Gyeongsang National University, Jinju 52725, Korea; (S.J.H.); (S.Y.); (S.M.J.); (H.J.); (M.Y.Y.)
| | - Moon Yeon Youn
- Department of Food Science, Gyeongsang National University, Jinju 52725, Korea; (S.J.H.); (S.Y.); (S.M.J.); (H.J.); (M.Y.Y.)
| | - Young Jun Kim
- Department of Food and Biotechnology, Korea University, Sejong 30019, Korea;
| | - Jae Kyeom Kim
- Department of Behavioral Health and Nutrition, University of Delaware, Newark, DE 19716, USA;
| | - Eui-Cheol Shin
- Department of Food Science, Gyeongsang National University, Jinju 52725, Korea; (S.J.H.); (S.Y.); (S.M.J.); (H.J.); (M.Y.Y.)
- Department of GreenBio Science, Gyeongsang National University, Jinju 52725, Korea
- Correspondence: ; Tel.: +82-55-772-3271; Fax: +82-55-772-3279
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The Beneficial Effects of Essential Oils in Anti-Obesity Treatment. Int J Mol Sci 2021; 22:ijms222111832. [PMID: 34769261 PMCID: PMC8584325 DOI: 10.3390/ijms222111832] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 10/29/2021] [Accepted: 10/29/2021] [Indexed: 12/22/2022] Open
Abstract
Obesity is a complex disease caused by an excessive amount of body fat. Obesity is a medical problem and represents an important risk factor for the development of serious diseases such as insulin resistance, type 2 diabetes, cardiovascular disease, and some types of cancer. Not to be overlooked are the psychological issues that, in obese subjects, turn into very serious pathologies, such as depression, phobias, anxiety, and lack of self-esteem. In addition to modifying one’s lifestyle, the reduction of body mass can be promoted by different natural compounds such as essential oils (EOs). EOs are mixtures of aromatic substances produced by many plants, particularly in medicinal and aromatic ones. They are odorous and volatile and contain a mixture of terpenes, alcohols, aldehydes, ketones, and esters. Thanks to the characteristics of the various chemical components present in them, EOs are used in the food, cosmetic, and pharmaceutical fields. Indeed, it has been shown that EOs possess great antibiotic, anti-inflammatory, and antitumor powers. Emerging results also demonstrate the anti-obesity effects of EOs. We have examined the main data obtained in experimental studies and, in this review, we summarize the effect of EOs in obesity and obesity-related metabolic diseases.
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Essential Oil of Cymbopogon Citratus Grown in Umuahia: A Viable Candidate for Anti-Inflammatory and Antioxidant Therapy. ACTA UNIVERSITATIS CIBINIENSIS. SERIES E: FOOD TECHNOLOGY 2021. [DOI: 10.2478/aucft-2021-0001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Abstract
The essential oils of Cymbopogon citratus (EOCC) has found use in medicine, food and chemical industry. This study attempts to provide evidence of its suitability for antioxidant and anti-inflammatory therapy. Total phenol and total flavonoid of EOCC was 49.83±0.39mg GAE/g of extract and 352.82±3.45 µg QEC/g of extract respectively. Gas chromatography-mass spectrometry (GC-MS) analysis of its essential oil (EOCC) showed 25 peaks with myrcenyl acetate (9.703%), caryophyllene (8.997%), citronella (6.383%) been the most abundant. The in vitro anti-inflammatory assay using human red blood cell (HRBC) membrane stabilization shows that at 200µg/mL, the percentage inhibition of EOCC was significantly higher compared to diclofenac both for heat-induced and hypotonic induced haemolysis. 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays showed a comparable and dose-dependent increase from 50 to 400 μg/mL in relation to vitamin C. Half maximal inhibitory concentration (IC50) of EOCC (73.16±12.89 μg/mL and 656.01±0.01 μmol Fe (II)/L) was remarkably higher compared to that of vitamin C (69.09±4.52 μg/mL and 246.79±0.01 μmol Fe (II)/L) both for DPPH and FRAP assays respectively. In conclusion, results from this study establish preliminary evidence on the therapeutic potential of EOCC in managing inflammation and oxidative stress caused by free radicals.
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Pino-Otín MR, Langa E, Val J, Mainar AM, Ballestero D. Impact of citronellol on river and soil environments using non-target model organisms and natural populations. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 287:112303. [PMID: 33714735 DOI: 10.1016/j.jenvman.2021.112303] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Citronellol is an acyclic monoterpenoid with a wide range of pharmacological activities (antibacterial, antifungal, anti-lice, repellent, lipolytic, anti-allergic, anti-inflammatory, antispasmodic, antidiabetic, anti-cholesterol, among other) and potential to replace synthetic products. However, the impact of citronellol on the environment remains unknown. We analysed, for the first time, the environmental impact of citronellol on river and soil environments using non-target model organisms and natural populations. The acute toxicity of citronellol on the aquatic invertebrate Daphnia magna, the plant Allium cepa L and the earthworm Eisenia fetida was quantified. The effect of citronellol in a river ecosystem was analysed using river periphyton communities taxonomically characterised and a river microbial community characterised through 16 S rRNA gene sequencing. Finally, a microbial community from natural soil was used to monitor the effect of citronellol on the soil ecosystem. The results showed that E. fetida was most sensitive to citronellol (LC50 = 12.34 mg/L), followed by D. magna (LC50 = 14.11 mg/L). Citronellol affected the photosynthesis of the fluvial periphyton (LC50 = 94.10 mg/L) and was phytotoxic for A. cepa. Furthermore, citronellol modified the growth and metabolism of both fluvial (LC50 = 0.19% v/v) and edaphic (LC50 = 5.07% v/v) bacterial populations. The metabolism of the microorganisms in the soil and water exposed to citronellol decreased with respect to the control, especially their ability to metabolise carbohydrates. Our results show that citronellol has a negative impact on the environment. Although acute effects cannot be expected, it is necessary to quantify the environmental levels as well as the long-term and persistent effects of this monoterpene.
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Affiliation(s)
| | - Elisa Langa
- Universidad San Jorge, Villanueva de Gállego, 50830, Zaragoza, Spain.
| | - Jonatan Val
- Universidad San Jorge, Villanueva de Gállego, 50830, Zaragoza, Spain.
| | - Ana M Mainar
- I3A, Universidad de Zaragoza, c/ Mariano Esquillor s/n, 50018, Zaragoza, Spain.
| | - Diego Ballestero
- Universidad San Jorge, Villanueva de Gállego, 50830, Zaragoza, Spain.
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Jiang G, Yao M, Wang Y, Xiao W, Yuan Y. A "push-pull-restrain" strategy to improve citronellol production in Saccharomyces cerevisiae. Metab Eng 2021; 66:51-59. [PMID: 33857581 DOI: 10.1016/j.ymben.2021.03.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/22/2021] [Accepted: 03/27/2021] [Indexed: 01/09/2023]
Abstract
Microbial production of monoterpenes has attracted increasing attention in recent years. Up to date, there are only few reports on the biosynthesis of the monoterpene alcohol citronellol that is widely used as fragrant and pharmaceutical intermediates. Here, we engineered Saccharomyces cerevisiae by employing a "push-pull-restrain" strategy to improve citronellol production based on the reduction of geraniol. Starting from a engineered geraniol-producing strain, different reductases were investigated and the best performing iridoid synthase from Catharanthus roseus (CrIS) resulted in 285.89 mg/L enantiomerically pure S-citronellol in shake flasks. Geranyl diphosphate (GPP), the most important precursor for monoterpenes, was enhanced by replacing the wild farnesyl diphosphate synthase (Erg20) with the mutant Erg20F96W, increasing the citronellol titer to 406.01 mg/L without negative influence on cell growth. Moreover, we employed synthetic protein scaffolds and protein fusion to colocalize four sequential enzymes to achieve better substrate channeling along with the deletion of an intermediate degradation pathway gene ATF1, which elevated the citronellol titer to 972.02 mg/L with the proportion of 97.8% of total monoterpenes in YPD medium. Finally, the engineered strain with complemented auxotrophic markers produced 8.30 g/L of citronellol by fed-batch fermentation, which was the highest citronellol titer reported to date. The multi-level engineering strategies developed here demonstrate the potential of monoterpenes overproduction in yeast, which can serve as a generally applicable platform for overproduction of other monoterpenes.
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Affiliation(s)
- Guozhen Jiang
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
| | - Mingdong Yao
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
| | - Ying Wang
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
| | - Wenhai Xiao
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China.
| | - Yingjin Yuan
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
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Pattarachotanant N, Tencomnao T. Citrus hystrix Extracts Protect Human Neuronal Cells against High Glucose-Induced Senescence. Pharmaceuticals (Basel) 2020; 13:ph13100283. [PMID: 33007805 PMCID: PMC7600454 DOI: 10.3390/ph13100283] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 12/17/2022] Open
Abstract
Citrus hystrix (CH) is a beneficial plant utilized in traditional folk medicine to relieve various health ailments. The antisenescent mechanisms of CH extracts were investigated using human neuroblastoma cells (SH-SY5Y). Phytochemical contents and antioxidant activities of CH extracts were analyzed using a gas chromatograph–mass spectrometer (GC-MS), 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) assay and 2,2′-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) assay. Effects of CH extracts on high glucose-induced cytotoxicity, reactive oxygen species (ROS) generation, cell cycle arrest and cell cycle-associated proteins were assessed using a 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide tetrazolium (MTT) assay, non-fluorescent 2′, 7′-dichloro-dihydrofluorescein diacetate (H2DCFDA) assay, flow cytometer and Western blot. The extracts protected neuronal senescence by inhibiting ROS generation. CH extracts induced cell cycle progression by releasing senescent cells from the G1 phase arrest. As the Western blot confirmed, the mechanism involved in cell cycle progression was associated with the downregulation of cyclin D1, phospho-cell division cycle 2 (pcdc2) and phospho-Retinoblastoma (pRb) proteins. Furthermore, the Western blot showed that extracts increased Surtuin 1 (SIRT1) expression by increasing the phosphorylation of Glyceraldehyde 3-phosphate dehydrogenase (GAPDH). Collectively, CH extracts could protect high glucose-induced human neuronal senescence by inducing cell cycle progression and up-regulation of SIRT1, thus leading to the improvement of the neuronal cell functions.
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Affiliation(s)
- Nattaporn Pattarachotanant
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand;
- Age-Related Inflammation and Degeneration Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tewin Tencomnao
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand;
- Age-Related Inflammation and Degeneration Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: ; Tel.: +66-2-218-1533
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Hong SJ, Cho J, Boo CG, Youn MY, Pan JH, Kim JK, Shin EC. Inhalation of Patchouli ( Pogostemon Cablin Benth.) Essential Oil Improved Metabolic Parameters in Obesity-Induced Sprague Dawley Rats. Nutrients 2020; 12:E2077. [PMID: 32668680 PMCID: PMC7400805 DOI: 10.3390/nu12072077] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/22/2022] Open
Abstract
This study investigated effects of patchouli essential oil (PEO) inhalation on metabolic parameters. First, to characterize aromatic compounds in PEO, solid-phase microextraction-gas chromatography/mass spectrometric detection was employed in which 19 aromatic compounds were identified. In GC-olfactometry analysis, linalool, α-patchoulene, and β-patchoulene were found to be the constituents exhibiting the highest similarity to the aromatic compounds in patchouli. In an animal experiment using Sprague Darley rats, groups with PEO inhalation had a reduced food intake compared to the control group. Additionally, body weight was lower in the obesity-induced animal model exposed to PEO inhalation than the group without PEO. However, we found no significant difference in organ weights between groups. In our serum analysis, high-density lipoprotein cholesterol was significantly higher in the PEO inhalation groups, while low-density lipoprotein cholesterol content was highest in the positive control group, suggesting that inhalation of the aromatic compounds present in patchouli may improve cholesterol profile. In addition, leptin levels were reduced in the groups treated with PEO inhalation, which explains the differences in food intake and body weight gains. Last, animal groups exposed to PEO inhalation showed a relatively lower systolic blood pressure which suggests that inhalation of PEO (or aromatic compounds therein) may assist in regulating blood pressure. Collectively, our data demonstrate that the inhalation of PEO influenced certain markers related to metabolic diseases, hence provide basic data for future research as to preventive/therapeutic applications of PEO as well as their aromatic constituents.
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Affiliation(s)
- Seong Jun Hong
- Department of Food Science, Gyeongnam National University of Science and Technology, Jinju 52725, Korea; (S.J.H.); (J.C.); (C.G.B.); (M.Y.Y.)
| | - Jinju Cho
- Department of Food Science, Gyeongnam National University of Science and Technology, Jinju 52725, Korea; (S.J.H.); (J.C.); (C.G.B.); (M.Y.Y.)
| | - Chang Guk Boo
- Department of Food Science, Gyeongnam National University of Science and Technology, Jinju 52725, Korea; (S.J.H.); (J.C.); (C.G.B.); (M.Y.Y.)
| | - Moon Yeon Youn
- Department of Food Science, Gyeongnam National University of Science and Technology, Jinju 52725, Korea; (S.J.H.); (J.C.); (C.G.B.); (M.Y.Y.)
| | - Jeong Hoon Pan
- Department of Behavioral Health and Nutrition, University of Delaware, Newark, DE 19716, USA; (J.H.P.); (J.K.K.)
| | - Jae Kyeom Kim
- Department of Behavioral Health and Nutrition, University of Delaware, Newark, DE 19716, USA; (J.H.P.); (J.K.K.)
| | - Eui-Cheol Shin
- Department of Food Science, Gyeongnam National University of Science and Technology, Jinju 52725, Korea; (S.J.H.); (J.C.); (C.G.B.); (M.Y.Y.)
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α-Linolenic Acid-Enriched Cold-Pressed Perilla Oil Suppress High-Fat Diet-Induced Hepatic Steatosis through Amelioration of the ER Stress-Mediated Autophagy. Molecules 2020; 25:molecules25112662. [PMID: 32521713 PMCID: PMC7321089 DOI: 10.3390/molecules25112662] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/01/2020] [Accepted: 06/03/2020] [Indexed: 02/07/2023] Open
Abstract
Perilla oil has been considered to have excellent potential for treating various diseases due to its contents of beneficial fatty acids, such as α-linolenic acid, oleic acid and linoleic acid. The therapeutic effects and molecular mechanism of an α-linolenic acid-enriched cold-pressed perilla oil (LEP) on hepatic steatosis of an obesity model were investigated by analyzing alterations in fat accumulation and endoplasmic reticulum (ER) stress-mediated autophagy, in high-fat diet (HFD)-induced obesity C57BL/6N mice treated with LEP for 16 weeks. Although no significant alterations were detected in body weight and most organ weights, the liver weight and accumulation of lipid droplets in the liver section were significantly lower in HFD + LEP treated group as compared to the HFD + Vehicle treated group. Reduced mRNA expression levels of adipogenesis and lipogenesis regulating factors, including the peroxisome proliferator-activated receptor (PPAR)γ, CCAAT/enhancer-binding protein (C/EBP)α, fatty acid synthase (FAS), and adipocyte fatty acid-binding protein 2 (aP2) were observed after LEP treatment for 16 weeks, while the levels of lipolysis were remarkably increased in the same group. Moreover, the LEP-treated groups showed suppression of ER stress-regulating factors, such as the C/EBP homologous protein (CHOP), eukaryotic translation initiation factor 2α (eIF2α), inositol-requiring protein 1 (IRE1)α, and Jun-N-terminal kinase (JNK) during anti-hepatic steatosis effects. The expression level of the microtubule-associated protein 1A/1B-light chain 3 (LC3) protein and phosphatidylinositol-3-kinase (PI3K)/AKT/ mammalian target of rapamycin (mTOR) pathway for the autophagy response showed a significant decrease in the HFD+LEP-treated group. Furthermore, ER stress-mediated autophagy was accompanied with enhanced phosphorylation of extracellular signal-regulated kinase (ERK), JNK, and p38 protein in the mitogen-activated protein (MAP) kinase signaling pathway. Taken together, the results of the present study indicate that treatment with LEP inhibits hepatic steatosis in the HFD-induced obese model through regulation of adipogenesis and lipolysis. We believe our results are the first to show that the anti-hepatic steatosis activity of α-linolenic acid from cold-pressed perilla oil might be tightly correlated with the amelioration of ER stress-mediated autophagy.
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Ruangaram W, Kato E. Selection of Thai Medicinal Plants with Anti-Obesogenic Potential via In Vitro Methods. Pharmaceuticals (Basel) 2020; 13:ph13040056. [PMID: 32235329 PMCID: PMC7243097 DOI: 10.3390/ph13040056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 12/13/2022] Open
Abstract
The prevalence of obesity is increasing globally. Despite the availability of a variety of anti-obesogenic drugs, including therapies under clinical development, these treatments are often indicated for patients with severe obesity, making them unsuitable for patients with mild obesity or for preventative use. In Thailand, traditional remedies employing medicinal plants are widely used to maintain health and treat disease. These treatments are generally inexpensive and readily available at markets, making them good treatment options for preventing obesity. To evaluate the anti-obesogenic potential of Thai medicinal plants, we employed three in vitro methods: pancreatic lipase inhibition, lipolysis enhancement, and lipid accumulation reduction assays. Among 70 Thai medicinal plants, Eurycoma longifolia Jack, Tiliacora triandra Diels, and Acacia concinna (Willd.) DC. were selected as the most favorable candidates because they exhibited anti-obesogenic activity in all three assays. These medicinal plants are expected to have efficient anti-obesogenic effects, making them promising candidates for further study.
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Affiliation(s)
- Wijitrapha Ruangaram
- Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaido 060-8589, Japan;
| | - Eisuke Kato
- Division of Fundamental AgriScience and Research, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaido 060-8589, Japan
- Correspondence: ; Tel.: +81-11-706-2496
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Small molecules for fat combustion: targeting obesity. Acta Pharm Sin B 2019; 9:220-236. [PMID: 30976490 PMCID: PMC6438825 DOI: 10.1016/j.apsb.2018.09.007] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/01/2018] [Accepted: 08/22/2018] [Indexed: 12/11/2022] Open
Abstract
Obesity is increasing in an alarming rate worldwide, which causes higher risks of some diseases, such as type 2 diabetes, cardiovascular diseases, and cancer. Current therapeutic approaches, either pancreatic lipase inhibitors or appetite suppressors, are generally of limited effectiveness. Brown adipose tissue (BAT) and beige cells dissipate fatty acids as heat to maintain body temperature, termed non-shivering thermogenesis; the activity and mass of BAT and beige cells are negatively correlated with overweight and obesity. The existence of BAT and beige cells in human adults provides an effective weight reduction therapy, a process likely to be amenable to pharmacological intervention. Herein, we combed through the physiology of thermogenesis and the role of BAT and beige cells in combating with obesity. We summarized the thermogenic regulators identified in the past decades, targeting G protein-coupled receptors, transient receptor potential channels, nuclear receptors and miscellaneous pathways. Advances in clinical trials were also presented. The main purpose of this review is to provide a comprehensive and up-to-date knowledge from the biological importance of thermogenesis in energy homeostasis to the representative thermogenic regulators for treating obesity. Thermogenic regulators might have a large potential for further investigations to be developed as lead compounds in fighting obesity.
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Key Words
- AKT, protein kinase B
- ALDH9, aldehyde dehydrogenase 9
- AMPK, AMP-activated protein kinase
- ATP, adenosine triphosphate
- BA, bile acids
- BAT, brown adipose tissue
- BMP8b, bone morphogenetic protein 8b
- Beige cells
- Brown adipose tissue
- C/EBPα, CCAAT/enhancer binding protein α
- CLA, cis-12 conjugated linoleic acid
- CRABP-II, cellular RA binding protein type II
- CRE, cAMP response element
- Cidea, cell death-inducing DNA fragmentation factor α-like effector A
- Dio2, iodothyronine deiodinase type 2
- ERE, estrogen response element
- ERs, estrogen receptors
- FAS, fatty acid synthase
- FGF21, fibroblast growth factor 21
- GPCRs, G protein-coupled receptors
- HFD, high fat diet
- LXR, liver X receptors
- MAPK, mitogen-activated protein kinase
- OXPHOS, oxidative phosphorylation
- Obesity
- PDEs, phosphodiesterases
- PET-CT, positron emission tomography combined with computed tomography
- PGC-1α, peroxisome proliferator-activated receptor γ coactivator 1-α
- PKA, protein kinase A
- PPARs, peroxisome proliferator-activated receptors
- PPREs, peroxisome proliferator response elements
- PRDM16, PR domain containing 16
- PTP1B, protein-tyrosine phosphatase 1B
- PXR, pregnane X receptor
- RA, retinoic acid
- RAR, RA receptor
- RARE, RA response element
- RMR, resting metabolic rate
- RXR, retinoid X receptor
- SIRT1, silent mating type information regulation 2 homolog 1
- SNS, sympathetic nervous system
- TFAM, mitochondrial transcription factor A
- TMEM26, transmembrane protein 26
- TRPs, transient receptor potential cation channels
- Thermogenesis
- UCP1, uncoupling protein 1
- Uncoupling protein 1
- VDR, vitamin D receptor
- VDRE, VDR response elements
- WAT, white adipose tissue
- cAMP, cyclic adenosine monophosphate
- cGMP, cyclic guanosine monophosphate
- β3-AR, β3-adrenergic receptor
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Citronellol, a monoterpene alcohol with promising pharmacological activities - A systematic review. Food Chem Toxicol 2019; 123:459-469. [DOI: 10.1016/j.fct.2018.11.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 09/06/2018] [Accepted: 11/12/2018] [Indexed: 12/12/2022]
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Hashmi HRT, Saladi L, Petersen F, Khaja M, Diaz-Fuentes G. Legionnaires' Disease: Clinicoradiological Comparison of Sporadic Versus Outbreak Cases. CLINICAL MEDICINE INSIGHTS-CIRCULATORY RESPIRATORY AND PULMONARY MEDICINE 2017; 11:1179548417711941. [PMID: 28615983 PMCID: PMC5462493 DOI: 10.1177/1179548417711941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 05/01/2017] [Indexed: 11/17/2022]
Abstract
BACKGROUND In 2015, New York City experienced the worst outbreak of Legionnaires’ disease in the history of the city. We compare patients seen during the 2015 outbreak with sporadic cases of Legionella during the past 5 years. METHODS We conducted a retrospective chart review of 90 patients with Legionnaires’ disease, including sporadic cases of Legionella infection admitted from 2010 to 2015 (n = 55) and cases admitted during the 2015 outbreak (n = 35). RESULTS We saw no significant differences between the 2 groups regarding demographics, smoking habits, alcohol intake, underlying medical disease, or residence type. Univariate and multivariate analyses showed that patients with sporadic case of Legionella had a longer stay in the hospital and intensive care unit as well as an increased stay in mechanical ventilation. Short-term mortality, discharge disposition, and most clinical parameters did not differ significantly between the 2 groups. CONCLUSIONS We found no specific clinicoradiological characteristics that could differentiate sporadic from epidemic cases of Legionella. Early recognition and high suspicion for Legionnaires’ disease are critical to provide appropriate treatment. Cluster of cases should increase suspicion for an outbreak.
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Affiliation(s)
| | - Lakshmi Saladi
- Division of Pulmonary and Critical Care Medicine, Bronx-Lebanon Hospital Center, Bronx, NY, USA
| | - Frances Petersen
- Department of Infection Control, Bronx-Lebanon Hospital Center, Bronx, NY, USA
| | - Misbahuddin Khaja
- Division of Pulmonary and Critical Care Medicine, Bronx-Lebanon Hospital Center, Bronx, NY, USA.,Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Gilda Diaz-Fuentes
- Division of Pulmonary and Critical Care Medicine, Bronx-Lebanon Hospital Center, Bronx, NY, USA.,Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Biphasic cardiovascular and respiratory effects induced by β-citronellol. Eur J Pharmacol 2016; 775:96-105. [DOI: 10.1016/j.ejphar.2016.02.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 02/04/2016] [Accepted: 02/08/2016] [Indexed: 01/13/2023]
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