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Zhu Y, Ouyang H, Lin W, Li W, Cao X, Chang Y, He J. GC-MS method for simultaneous determination and pharmacokinetic investigation of five volatile components in rat plasma after oral administration of the essential oil extract of Pogostemon cablin. Heliyon 2024; 10:e32444. [PMID: 38933986 PMCID: PMC11201108 DOI: 10.1016/j.heliyon.2024.e32444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 06/01/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Pogostemon cablin (PC) is a traditional Chinese medicine (TCM) and food as well as an important essential oil plant in China. PC essential oil exerts pharmacological effects such as anti-inflammatory, anti-oxidant, anti-platelet, anti-thrombotic, and anti-depressant. This study established a reliable and sensitive gas chromatography-mass spectrometry (GC-MS) method for the simultaneous determination of the pharmacokinetics of patchouli alcohol, β-elemene, β-caryophyllene, caryophyllene oxide, and farnesol in the plasma of rats after oral administration of PC essential oil extract. Using ethyl acetate to prepare the plasma samples, and p-menthone was used as the internal standard (IS). An HP5-MS column (0.25 μm × 0.25 mm × 30 m) was used for chromatographic separation, and detection was performed in selected ion monitoring (SIM) mode. The accuracies of intra-day and inter-day for all analytes displayed a range of -6.7 %-9.2 %, with precision below 12.5 %. Extraction recoveries for analytes ranged from 74.0 to 106.4 % and matrix effects ranged from 92.4 to 106.9 %. Stability results have demonstrated that the relative standard deviations (RSD) of analytes were below 12.1 %. Therefore, the developed GC-MS method successfully evaluated the pharmacokinetics of five volatile components in PC essential oil extract administered orally to rats.
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Affiliation(s)
- Yameng Zhu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, 300193, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Huizi Ouyang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, 300193, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, 300193, Tianjin, China
| | - Wenhan Lin
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Wenwen Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xiunan Cao
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yanxu Chang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Jun He
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
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Wang X, Tang Y, Huang H, Wu D, Chen X, Li J, Zheng H, Zhan R, Chen L. Functional analysis of Pogostemon cablin farnesyl pyrophosphate synthase gene and its binding transcription factor PcWRKY44 in regulating biosynthesis of patchouli alcohol. FRONTIERS IN PLANT SCIENCE 2022; 13:946629. [PMID: 36092423 PMCID: PMC9458891 DOI: 10.3389/fpls.2022.946629] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Farnesyl pyrophosphate synthase (FPPS) plays an important role in the synthesis of plant secondary metabolites, but its function and molecular regulation mechanism remain unclear in Pogostemon cablin. In this study, the full-length cDNA of the FPP synthase gene from P. cablin (PcFPPS) was cloned and characterized. The expressions of PcFPPS are different among different tissues (highly in P. cablin flowers). Subcellular localization analysis in protoplasts indicated that PcFPPS was located in the cytoplasm. PcFPPS functionally complemented the lethal FPPS deletion mutation in yeast CC25. Transient overexpression of PcFPPS in P. cablin leaves accelerated terpene biosynthesis, with an ~47% increase in patchouli alcohol. Heterologous overexpression of PcFPPS in tobacco plants was achieved, and it was found that the FPP enzyme activity was significantly up-regulated in transgenic tobacco by ELISA analysis. In addition, more terpenoid metabolites, including stigmasterol, phytol, and neophytadiene were detected compared with control by GC-MS analysis. Furthermore, with dual-LUC assay and yeast one-hybrid screening, we found 220 bp promoter of PcFPPS can be bound by the nuclear-localized transcription factor PcWRKY44. Overexpression of PcWRKY44 in P. cablin upregulated the expression levels of PcFPPS and patchoulol synthase gene (PcPTS), and then promote the biosynthesis of patchouli alcohol. Taken together, these results strongly suggest the PcFPPS and its binding transcription factor PcWRKY44 play an essential role in regulating the biosynthesis of patchouli alcohol.
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Affiliation(s)
- Xiaobing Wang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
| | - Yun Tang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
| | - Huiling Huang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
| | - Daidi Wu
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
| | - Xiuzhen Chen
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Junren Li
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Hai Zheng
- Guangdong Food and Drug Vocational College, Guangzhou, China
| | - Ruoting Zhan
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, Guangdong, China
| | - Likai Chen
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, China
- Key Laboratory of Chinese Medicinal Resource From Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, China
- Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, Guangzhou, China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, Guangdong, China
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Gao L, Xie J, Li X, Guo YJ, Zhang MM, Meng LY, Lin QT, Gao XY. Effect and Safety of Penetrating Moxibustion in Treatment of Migraine without Aura: A Randomized Controlled Trial. Chin J Integr Med 2021; 27:927-932. [PMID: 33881716 DOI: 10.1007/s11655-021-3327-4] [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] [Accepted: 02/26/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To observe the clinical effect of penetrating moxibustion on migraine without aura (MO) patients. METHODS Totally 60 MO patients from the Acupuncture Clinic of the Third Affiliated Hospital of Henan University of Chinese Medicine were collected from November 2015 to February 2017. All patients were assigned to a treatment group and a control group using a random number table, 30 cases in each group. The treatment group was treated with penetrating moxibustion, and the control group was treated with mild moxibustion, thrice a week for 4 consecutive weeks. The total effective rate, Visual Analogue Scale (VAS) scores, headache intensity, and Migraine Specific Quality of Life Questionnaire (MSQ) scores of patients after treatment were compared between the two groups. The moxibustion sensation and reaction after moxibustion were observed, and the adverse reactions were evaluated. All patients were followed up at 4 and 16 weeks after treatment. RESULTS The total effective rate of the treatment group was significantly higher than that of the control group (93.33% vs. 80.00%, P<0.05). The improvement of VAS scores, headache intensity, and the role restrictive and role preventive scores in MSQ in the treatment group was better than those in the control group (P<0.05). The person-time of moxibustion sensations of itching, numbness and cold as well as flushing and sweating after moxibustion in the treatment group was all significantly higher than that in the control group (P<0.01). There was no significant difference in safety evaluation between the two groups (P>0.05). CONCLUSIONS Penetrating moxibustion can significantly relieve pain and improve quality of life of MO patients. After penetrating moxibustion, flushing and sweating of patients were obvious, and the curative effect was superior to the mild moxibustion.
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Affiliation(s)
- Ling Gao
- College of Acupuncture and Tuina, Henan University of Chinese Medicine, Zhengzhou, 450008, China.,Acupuncture Clinic of the Third Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450008, China
| | - Jin Xie
- College of Acupuncture and Tuina, Henan University of Chinese Medicine, Zhengzhou, 450008, China.,Acupuncture Clinic of the Third Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450008, China
| | - Xiao Li
- College of Acupuncture and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ya-Jing Guo
- College of Acupuncture and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ming-Ming Zhang
- College of Acupuncture and Tuina, Henan University of Chinese Medicine, Zhengzhou, 450008, China.,Acupuncture Clinic of the Third Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450008, China
| | - Ling-Yan Meng
- College of Acupuncture and Tuina, Henan University of Chinese Medicine, Zhengzhou, 450008, China.,Acupuncture Clinic of the Third Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450008, China
| | - Qian-Ting Lin
- College of Acupuncture and Tuina, Henan University of Chinese Medicine, Zhengzhou, 450008, China.,Acupuncture Clinic of the Third Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450008, China
| | - Xi-Yan Gao
- College of Acupuncture and Tuina, Henan University of Chinese Medicine, Zhengzhou, 450008, China. .,Acupuncture Clinic of the Third Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450008, China.
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Junren C, Xiaofang X, Mengting L, Qiuyun X, Gangmin L, Huiqiong Z, Guanru C, Xin X, Yanpeng Y, Fu P, Cheng P. Pharmacological activities and mechanisms of action of Pogostemon cablin Benth: a review. Chin Med 2021; 16:5. [PMID: 33413544 PMCID: PMC7791836 DOI: 10.1186/s13020-020-00413-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/18/2020] [Accepted: 12/11/2020] [Indexed: 02/07/2023] Open
Abstract
Patchouli ("Guanghuoxiang") or scientifically known as Pogostemon cablin Benth, belonging to the family Lamiaceae, has been used in traditional Chinse medicine (TCM) since the time of the Eastern Han dynasty. In TCM theory, patchouli can treat colds, nausea, fever, headache, and diarrhea. Various bioactive compounds have been identified in patchouli, including terpenoids, phytosterols, flavonoids, organic acids, lignins, glycosides, alcohols, pyrone, and aldehydes. Among the numerous compounds, patchouli alcohol, β-patchoulene, patchoulene epoxide, pogostone, and pachypodol are of great importance. The pharmacological impacts of these compounds include anti-peptic ulcer effect, antimicrobial effect, anti-oxidative effect, anti-inflammatory effect, effect on ischemia/reperfusion injury, analgesic effect, antitumor effect, antidiabetic effect, anti-hypertensive effect, immunoregulatory effect, and others.For this review, we examined publications from the previous five years collected from PubMed, Web of Science, Springer, and the Chinese National Knowledge Infrastructure databases. This review summarizes the recent progress in phytochemistry, pharmacology, and mechanisms of action and provides a reference for future studies focused on clinical applications of this important plant extract.
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Affiliation(s)
- Chen Junren
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Xie Xiaofang
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Li Mengting
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Xiong Qiuyun
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Li Gangmin
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Zhang Huiqiong
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Chen Guanru
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Xu Xin
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Yin Yanpeng
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China
| | - Peng Fu
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China.
- West China School of Pharmacy, Sichuan University, 17 South Renmin Rd, 610065, Chengdu, China.
| | - Peng Cheng
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
- State Key Laboratory of Traditional Chinese Medicine Resources in Southwest China, Chengdu, 610075, China.
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Jinniu District, Chengdu, 611137, China.
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Gong Q, Yin J, Wang M, He L, Lei F, Luo Y, Yang S, Feng Y, Li J, Du L. Comprehensive study of dexamethasone on albumin biogenesis during normal and pathological renal conditions. PHARMACEUTICAL BIOLOGY 2020; 58:1252-1262. [PMID: 33332210 PMCID: PMC7751422 DOI: 10.1080/13880209.2020.1855214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
CONTEXT Dexamethasone (DXM) has an anti-immunoinflammatory effect, and is often used in acute kidney injury (AKI). However, the effects of DXM on albumin (ALB) have not been fully studied. OBJECTIVE To investigate the effects of DXM on ALB production and renal function. MATERIALS AND METHODS Male Wistar rats were divided into normal and DXM groups (0.25, 0.5, 1 mg/kg for 5 days) (n = 15) for a dose-dependent study. Rats were divided into normal group and DXM groups (0.5 mg/kg for 3, 5, 7 days) (n = 9) for a time-dependent study. In AKI experiment, rats were divided into normal (saline), cisplatin (CP, 5 mg/kg, i.v.), CP + DXM groups (0.25, 0.5 and 1 mg/kg, i.m.) (n = 16). The blood and the organs were isolated for analysis. RESULTS In normal, serum ALB (sALB) and serum total protein (sTP) increased in DXM group with sALB increased 19.8-32.2% (from small to large dosages); and 30.2-32.5.6% (from 3 to 7 days of DXM); sTP 15.7-22.6% and 14.2-24.3%; urine ALB (uALB) 31.5-392.3%, and 1047.2-1390.8%; urine TP (uTP) 0.68-173.1% and 98.0-504.9%, compared with normal groups. DXM increased the mRNA expression of Cebp and Hnf, suppressing podocin. In AKI, DXM decreased serum BUN (53.7%), serum Cre (73.4%), sALB (30.0%), sTP (18.7%), uALB (74.5%), uTP (449.3%), rescuing the suppressed podocin in kidney. CONCLUSIONS DXM acts on Cebp and Hnf and promotes ALB production. This finding helps to evaluate the rationale of DXM for kidney injury.
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Affiliation(s)
- Qin Gong
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
| | - Jilei Yin
- Department of Traditional Chinese Medicine, Jiangsu Union Technical Institute Lianyungang Branch Institute of Traditional Chinese Medicine, Lianyungang, China
| | - Mulan Wang
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
| | - Luling He
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
| | - Fan Lei
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Yingying Luo
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
| | - Shilin Yang
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
| | - Yulin Feng
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
| | - Jun Li
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
| | - Lijun Du
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Pharmacology Laboratory, State Key Laboratory of Innovative Drugs and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China
- School of Life Sciences, Tsinghua University, Beijing, China
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Lee HS, Lee J, Smolensky D, Lee SH. Potential benefits of patchouli alcohol in prevention of human diseases: A mechanistic review. Int Immunopharmacol 2020; 89:107056. [PMID: 33039955 PMCID: PMC7543893 DOI: 10.1016/j.intimp.2020.107056] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/16/2020] [Accepted: 09/26/2020] [Indexed: 12/18/2022]
Abstract
Patchouli alcohol (PA) is a bioactive component in essential oil extracted from Pogostemon cablin. The present review provides the scientific mechanisms for health beneficial activities of PA in diverse disease models. PA possesses diverse health beneficial activities.
Patchouli alcohol (PA), a tricyclic sesquiterpene, is a dominant bioactive component in oil extracted from the aerial parts of Pogostemon cablin (patchouli). Diverse beneficial activities have been reported, including anti-influenza virus, anti-depressant, anti-nociceptive, vasorelaxation, lung protection, brain protection, anti-ulcerogenic, anti-colitis, pre-biotic-like, anti-inflammatory, anti-cancer and protective activities against metabolic diseases. However, detailed mechanistic studies are required to explore the possibility of developing PA as a functional food material or promising drug for the prevention and treatment of human diseases. This review highlights multiple molecular targets and working mechanisms by which PA mediates health benefits.
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Affiliation(s)
- Hee-Seop Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA
| | - Jihye Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA
| | - Dmitriy Smolensky
- Grain Quality and Structure Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Manhattan, KS 66502, USA
| | - Seong-Ho Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA.
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