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Henedak NT, El-Abhar HS, Soubh AA, Abdallah DM. NLRP3 Inflammasome: A central player in renal pathologies and nephropathy. Life Sci 2024; 351:122813. [PMID: 38857655 DOI: 10.1016/j.lfs.2024.122813] [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: 02/12/2024] [Revised: 05/16/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024]
Abstract
The cytoplasmic oligomer NLR Family Pyrin Domain Containing 3 (NLRP3) inflammasome has been implicated in most inflammatory and autoimmune diseases. Here, we highlight the significance of NLRP3 in diverse renal disorders, demonstrating its activation in macrophages and non-immune tubular epithelial and mesangial cells in response to various stimuli. This activation leads to the release of pro-inflammatory cytokines, contributing to the development of acute kidney injury (AKI), chronic renal injury, or fibrosis. In AKI, NLRP3 inflammasome activation and pyroptotic renal tubular cell death is driven by contrast and chemotherapeutic agents, sepsis, and rhabdomyolysis. Nevertheless, inflammasome is provoked in disorders such as crystal and diabetic nephropathy, obesity-related renal fibrosis, lupus nephritis, and hypertension-induced renal damage that induce chronic kidney injury and/or fibrosis. The mechanisms by which the inflammatory NLRP3/ Apoptosis-associated Speck-like protein containing a Caspase recruitment domain (ASC)/caspase-1/interleukin (IL)-1β & IL-18 pathway can turn on renal fibrosis is also comprehended. This review further outlines the involvement of dopamine and its associated G protein-coupled receptors (GPCRs), including D1-like (D1, D5) and D2-like (D2-D4) subtypes, in regulating this inflammation-linked renal dysfunction pathway. Hence, we identify D-related receptors as promising targets for renal disease management by inhibiting the functionality of the NLRP3 inflammasome.
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Affiliation(s)
- Nada T Henedak
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ahram Canadian University, 6(th) of October City, Giza, Egypt
| | - Hanan S El-Abhar
- Department of Pharmacology, Toxicology, and Biochemistry, Faculty of Pharmacy, Future University in Egypt, Cairo 11835, Egypt
| | - Ayman A Soubh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ahram Canadian University, 6(th) of October City, Giza, Egypt
| | - Dalaal M Abdallah
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
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2
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Xie L, Yuan Y, Yang F, Jiang H, Yang F, Yang C, Yu Z. Comparative analysis of antioxidant activities and chemical compositions in the extracts of different edible parts from Camellia tetracocca Zhang ( C. tetracocca) with two distinct color characteristics. Food Chem X 2024; 22:101496. [PMID: 38817977 PMCID: PMC11137522 DOI: 10.1016/j.fochx.2024.101496] [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: 04/11/2024] [Revised: 05/17/2024] [Accepted: 05/17/2024] [Indexed: 06/01/2024] Open
Abstract
The Camellia tetracocca Zhang is a rare and ancient plant, exclusively found in the vicinity of Puan County, Guizhou Province, China. According to leaf color, two distinct variations have been identified: purple C. tetracocca Zhang (PCTZ) and green C. tetracocca (GCTZ). This research was conducted to investigate the antioxidant activities and chemical compositions of different edible parts of PCTZ and GCTZ. Antioxidant activity was evaluated using DPPH, ABTS, HSA, and T-AOC assays, while the content of compounds was determined by HPLC. The findings demonstrated that the antioxidant capacity of PCTZ leaves is significantly superior to that of GCTZ leaves. Notably, theacrine, a rare compound, contains up to 2.075% in PCTZ leaves, indicating potential as a novel natural antidepressant and antioxidant. In conclusion, PCTZ is a distinctive tea beverage and a valuable genetic material for tea tree breeding due to its high theacrine and low caffeine characteristics.
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Affiliation(s)
| | | | - Feijiao Yang
- School of Life Science, Guizhou Normal University, Guiyang 550025, China
| | - Huqin Jiang
- School of Life Science, Guizhou Normal University, Guiyang 550025, China
| | - Feng Yang
- School of Life Science, Guizhou Normal University, Guiyang 550025, China
| | - Chenju Yang
- School of Life Science, Guizhou Normal University, Guiyang 550025, China
| | - Zhengwen Yu
- School of Life Science, Guizhou Normal University, Guiyang 550025, China
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3
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Hellenbrand J, Bloomer RJ, Van der Merwe M. The Effect of Short-Term NAD3® Supplementation on Circulating Adult Stem Cells in Healthy Individuals Aged 40-70 Years. Cureus 2024; 16:e55661. [PMID: 38590496 PMCID: PMC11000032 DOI: 10.7759/cureus.55661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2024] [Indexed: 04/10/2024] Open
Abstract
Objective This study aimed to assess the impact of acute and short-term supplementation with NAD3®, a theacrine-containing supplement, on circulating adult stem cell numbers in a healthy male and female population aged 40-70 years. Methods This was a double-blind, placebo-controlled crossover study with 12 participants randomized to receive either NAD3® or a placebo for seven days. Blood samples were collected after an overnight fast, before and after the seven-day supplementation period, and one and two hours after the final supplement dose. Using flow cytometry, circulating stem cells, including lymphocytoid CD34+ stem cells (CD45dimCD34+), stem cells associated with vascular maintenance and repair (CD45dimCD34+CD309+), CD34+ stem cells linked to a progenitor phenotype (CD45dimCD34+CD309neg), circulating endothelial stem cells (CD45negCD31+CD309+), and mesenchymal stem cells (CD45negCD90+) were quantified. Results Acute NAD3® supplementation did not result in the mobilization of stem cells from the bone marrow. However, seven days of daily NAD3® supplementation resulted in selective changes in circulating stem cell numbers. A significant time*treatment interaction was observed for CD45dimCD34+ cells (p=0.04) and CD45dimCD34+CD309neg cells (p=0.04), indicating a decrease in cell numbers with supplementation. There was also a trend toward an increase in circulating endothelial cells (p=0.08) with seven days of NAD3®supplementation. Conclusion Short-term NAD3® supplementation demonstrated an effect on the quantity of bone marrow-derived stem cells in circulation. The study suggests that this theacrine-containing supplement may play a role in modulating adult stem cell populations, emphasizing the potential impact of NAD3® on regenerative processes. Further research with extended supplementation periods and larger sample sizes is warranted to elucidate the functional consequences of these changes and explore the therapeutic implications for age-related declines in stem cell function.
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He Y, Zheng X, Hu Y, Deng L, Xu J, Wu S. Proteomics analysis to investigate the potential mechanism of theacrine against UV-induced skin photodamage. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2023; 39:620-632. [PMID: 37641574 DOI: 10.1111/phpp.12908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/29/2023] [Accepted: 08/08/2023] [Indexed: 08/31/2023]
Abstract
AIM This study aimed to explore the underlying mechanism of theacrine treatment of UV-induced skin photodamage. MATERIALS AND METHODS Tandem Mass Tag (TMT) relative quantitative proteomics analysis was used to characterize the proteins and pathways associated with the ability of theacrine to combat photodamage in mouse skin by modeling UV irradiation of the backs of ICR mice. RESULTS Apoptosis-related proteins and signaling pathways play a key role in the ability of theacrine to protect against skin photodamage, according to proteomic and bioinformatics analysis; molecular docking and Western blotting further revealed that theacrine was associated with apoptosis-related proteins (p53, Bcl-2, Bax, caspase-3, and cleaved-caspase-3) with strong binding affinity, which can significantly reduce skin cell apoptosis induced by UV exposure. CONCLUSION The findings revealed that theacrine can reduce UVB-induced epidermal damage by controlling the apoptosis signaling pathway, implying that theacrine could be a useful anti-UVB damage agent.
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Affiliation(s)
- Yong He
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Xinkai Zheng
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Yunfeng Hu
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Liehua Deng
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Jin Xu
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Shi Wu
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
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Di X, Hardardottir I, Freysdottir J, Wang D, Gustafson KR, Omarsdottir S, Molinski TF. Geobarrettin D, a Rare Herbipoline-Containing 6-Bromoindole Alkaloid from Geodia barretti. Molecules 2023; 28:molecules28072937. [PMID: 37049700 PMCID: PMC10095911 DOI: 10.3390/molecules28072937] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/25/2023] [Accepted: 02/26/2023] [Indexed: 03/29/2023] Open
Abstract
Geobarrettin D (1), a new bromoindole alkaloid, was isolated from the marine sponge Geodia barretti collected from Icelandic waters. Its structure was elucidated by 1D, and 2D NMR (including 1H-15N HSQC, 1H-15N HMBC spectra), as well as HRESIMS data. Geobarrettin D (1) is a new 6-bromoindole featuring an unusual purinium herbipoline moiety. Geobarrettin D (1) decreased secretion of the pro-inflammatory cytokine IL-12p40 by human monocyte derived dendritic cells, without affecting secretion of the anti-inflammatory cytokine IL-10. Thus, compound 1 shows anti-inflammatory activity.
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A Purine Derivative Containing an Organoselenium Group Protects Against Memory Impairment, Sensitivity to Nociception, Oxidative Damage, and Neuroinflammation in a Mouse Model of Alzheimer's Disease. Mol Neurobiol 2023; 60:1214-1231. [PMID: 36427137 DOI: 10.1007/s12035-022-03110-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 10/20/2022] [Indexed: 11/27/2022]
Abstract
In the present study, the effect of 6-((4-fluorophenyl) selanyl)-9H-purine (FSP) was tested against memory impairment and sensitivity to nociception induced by intracerebroventricular injection of amyloid-beta peptide (Aβ) (25-35 fragment), 3 nmol/3 μl/per site in mice. Memory impairment was determined by the object recognition task (ORT) and nociception by the Von-Frey test (VFT). Aβ caused neuroinflammation with upregulation of glial fibrillary acidic protein (GFAP) (in hippocampus), nuclear factor-κB (NF-κB), and the proinflammatory cytokines interferon-γ (IFN-γ) and tumor necrosis factor-α (TNF-α) in cerebral cortex and hippocampus. Additionally, Aβ increased oxidant levels and lipid peroxidation in cerebral cortex and hippocampus, but decreased heme oxygenase-1 (HO-1) and peroxiredoxin-1 (Prdx1) expression in the hippocampus. Anti-neuroinflammatory effects of FSP were demonstrated by a decrease in the expression of GFAP and NF-κB in the hippocampus, as well as a decrease in proinflammatory cytokines in both the hippocampus and cerebral cortex FSP protected against oxidative stress by decreasing oxidant levels and lipid peroxidation and by increasing HO-1 and Prdx1 expressions in the hippocampus of mice. Moreover, FSP prevented the activation of nuclear factor erythroid 2-related factor 2 (Nrf-2) in the hippocampus of mice induced by Aβ. In conclusion, treatment with FSP attenuated memory impairment, nociception sensitivity by decreasing oxidative stress, and neuroinflammation in a mouse model of Alzheimer's disease.
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Yang M, Shen P, Xu L, Kong M, Yu C, Shi Y. Theacrine alleviates sepsis-induced acute kidney injury by repressing the activation of NLRP3/Caspase-1 inflammasome. PeerJ 2022; 10:e14109. [PMID: 36213494 PMCID: PMC9541625 DOI: 10.7717/peerj.14109] [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: 02/16/2022] [Accepted: 09/02/2022] [Indexed: 01/25/2023] Open
Abstract
Acute kidney injury (AKI) is a frequent and serious complication of sepsis, which results in a rapid decline of kidney function. Currently, there are no curative therapies for AKI. Theacrine is a purine alkaloid and exerts significant role in regulating inflammation, oxidative stress, and mood elevation. The study aims to evaluate the biological role and potential mechanism of theacrine in septic AKI. The murine and cellular models of septic AKI were established in lipopolysaccharide (LPS)-treated C57BL/6 mice and HK-2 cells, respectively. The effect of theacrine on alleviating septic AKI was assessed after pretreatment with theacrine in vivo and in vitro. We found that theacrine treatment significantly alleviated LPS-induced kidney injury, as evidenced by decreased levels of kidney injury markers (blood urea nitrogen and creatinine), inflammatory factors (IL-1β and IL-18), and cell apoptosis in vivo and in vitro. Mechanistically, theacrine markedly repressed the activation of NOD-like receptor (NLR) pyrin domain-containing protein 3 (NLRP3)inflammasome. As expected, MCC950 (a specific inhibitor of NLRP3) treatment also decreased LPS-induced production of IL-18 and IL-1β and cell apoptosis in HK-2 cells. More important, Nigericin sodiumsalt (a NLRP3 agonist) damaged the effect of theacrine on repressing kidney injury markers (blood urea nitrogen and creatinine), pro-inflammatory cytokines (IL-18 and IL-1β), and cell apoptosis. Taken together, these results demonstrate that theacrine alleviates septic AKI, at least in part by repressing the activation of NLRP3 inflammasome.
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Affiliation(s)
- Maoxian Yang
- Department of Intensive Care Unit, The First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Peng Shen
- Department of Intensive Care Unit, The First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Longsheng Xu
- Department of Center Laboratory, The First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Min Kong
- Department of Anesthesiology, The First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Congcong Yu
- Department of Pharmacy, The First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Yunchao Shi
- Department of Intensive Care Unit, The First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, Jiaxing, China
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Discriminant Analysis of Pu-Erh Tea of Different Raw Materials Based on Phytochemicals Using Chemometrics. Foods 2022; 11:foods11050680. [PMID: 35267314 PMCID: PMC8909724 DOI: 10.3390/foods11050680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 02/01/2023] Open
Abstract
Pu-erh tea processed from the sun-dried green tea leaves can be divided into ancient tea (AT) and terrace tea (TT) according to the source of raw material. However, their similar appearance makes AT present low market identification, resulting in a disruption in the tea market rules of fair trade. Therefore, this study analyzed the classification by principal component analysis/hierarchical clustering analysis and conducted the discriminant model through stepwise Fisher discriminant analysis and decision tree analysis based on the contents of water extract, phenolic components, alkaloid, and amino acids, aiming to investigate whether phytochemicals coupled with chemometric analyses distinguish AT and TT. Results showed that there were good separations between AT and TT, which was caused by 16 components with significant (p < 0.05) differences. The discriminant model of AT and TT was established based on six discriminant variables including water extract, (+)-catechin, (−)-epicatechin, (−)-epigallocatechin, theacrine, and theanine. Among them, water extract comprised multiple soluble solids, representing the thickness of tea infusion. The model had good generalization capability with 100% of performance indexes according to scores of the training set and model set. In conclusion, phytochemicals coupled with chemometrics analyses are a good approach for the identification of different raw materials.
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Pavan Phani Kumar M, Anuradha V, Subramanyam C, Hari Babu VV. In silico molecular docking study, synthesis and α-amylase inhibitory activity evaluation of phosphorylated derivatives of purine. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1960833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - V. Anuradha
- Department of Chemistry, Vignan Degree College, Guntur, Andhra Pradesh, India
| | - Ch. Subramanyam
- Department of Chemistry, Bapatla Engineering College, Bapatla, Andhra Pradesh, India
| | - V. V. Hari Babu
- Department of Physics, Bapatla Engineering College, Bapatla, Andhra Pradesh, India
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Di Matteo P, Bortolami M, Feroci M, Scarano V, Petrucci R. Electrochemical Transformations of Methylxanthines in Non‐Aqueous Medium. ChemElectroChem 2021. [DOI: 10.1002/celc.202100320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Paola Di Matteo
- Department of Chemical Engineering Materials Environment Sapienza University of Rome Via Eudossiana 18 00184 Rome Italy
| | - Martina Bortolami
- Department of Basic and Applied Sciences for Engineering Sapienza University of Rome Via del Castro Laurenziano 7 00161 Rome Italy
| | - Marta Feroci
- Department of Basic and Applied Sciences for Engineering Sapienza University of Rome Via del Castro Laurenziano 7 00161 Rome Italy
| | - Vincenzo Scarano
- Department of Basic and Applied Sciences for Engineering Sapienza University of Rome Via del Castro Laurenziano 7 00161 Rome Italy
| | - Rita Petrucci
- Department of Basic and Applied Sciences for Engineering Sapienza University of Rome Via del Castro Laurenziano 7 00161 Rome Italy
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11
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Agarwal S, Lathwal A, Nath M. Recent Advances on Cellulose Sulfuric Acid as Sustainable and Environmentally Benign Organocatalyst for Organic Transformations. CURRENT ORGANOCATALYSIS 2021. [DOI: 10.2174/2213337207999200728151811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cellulose sulfuric acid has proved its competence as a potential bio-compatible, non-toxic,
and inexpensive heterogeneous solid acid catalyst in synthetic organic chemistry. Owing to its remarkable
properties, such as non-hygroscopic nature, recyclability, superior catalytic activity and high
stability, it has been actively explored as an efficient and biodegradable organocatalyst in diverse
chemical transformations of synthetic relevance. This review attempts to summarize a significant advancement
and catalytic applications of cellulose sulfuric acid for the synthesis of a plethora of biologically
relevant organic molecules.
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Affiliation(s)
- Shalini Agarwal
- Department of Chemistry, Faculty of Science, University of Delhi, Delhi-110 007, India
| | - Ankit Lathwal
- Department of Chemistry, Faculty of Science, University of Delhi, Delhi-110 007, India
| | - Mahendra Nath
- Department of Chemistry, Faculty of Science, University of Delhi, Delhi-110 007, India
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Discovery of natural anti-inflammatory alkaloids: Potential leads for the drug discovery for the treatment of inflammation. Eur J Med Chem 2021; 213:113165. [PMID: 33454546 DOI: 10.1016/j.ejmech.2021.113165] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 02/07/2023]
Abstract
Inflammation is an adaptive response of the immune system to tissue malfunction or homeostatic imbalance. Corticosteroids and non-steroidal anti-inflammatory drugs (NSAIDs) are frequently applied to treat varieties of inflammatory diseases but are associated with gastrointestinal, cardiovascular, and kidney side effects. Developing more effective and less toxic agents remain a challenge for pharmaceutical chemist due to the complexity of the different inflammatory processes. Alkaloids are widely distributed in plants with diverse anti-inflammatory activities, providing various potential lead compounds or candidates for the design and discovery of new anti-inflammatory drug candidates. Therefore, re-examining the anti-inflammatory alkaloid natural products is advisable, bringing more opportunities. In this review, we summarized and described the recent advances of natural alkaloids with anti-inflammatory activities and possible mechanisms in the period from 2009 to 2020. It is hoped that this review of anti-inflammatory alkaloids can provide new ideas for researchers engaged in the related fields and potential lead compounds for the discovery of anti-inflammatory drugs.
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Sheng YY, Xiang J, Wang ZS, Jin J, Wang YQ, Li QS, Li D, Fang ZT, Lu JL, Ye JH, Liang YR, Zheng XQ. Theacrine From Camellia kucha and Its Health Beneficial Effects. Front Nutr 2020; 7:596823. [PMID: 33392238 PMCID: PMC7773691 DOI: 10.3389/fnut.2020.596823] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022] Open
Abstract
Theacrine, i.e., 1,3,7,9-tetramethyluric acid, is one of the major purine alkaloids found in leaf of a wild tea plant species Camellia kucha Hung T. Chang. Theacrine has been attracted great attentions academically owing to its diverse health benefits. Present review examines the advances in the research on the health beneficial effects of theacrine, including antioxidant effect, anti-inflammatory effect, locomotor activation and reducing fatigue effects, improving cognitive effect, hypnotic effect, ameliorating lipid metabolism and inhibiting breast cancer cell metastasis effect. The inconsistent results in this research field and further expectations were also discussed.
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Affiliation(s)
- Yue-Yue Sheng
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Jing Xiang
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Ze-Shi Wang
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Jing Jin
- Zhejiang Agricultural Technology Extension Center, Hangzhou, China
| | - Ying-Qi Wang
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Qing-Sheng Li
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Da Li
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Zhou-Tao Fang
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Jian-Liang Lu
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Jian-Hui Ye
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Yue-Rong Liang
- Tea Research Institute, Zhejiang University, Hangzhou, China
| | - Xin-Qiang Zheng
- Tea Research Institute, Zhejiang University, Hangzhou, China
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Lin PR, Kuo PC, Li YC, Jhuo CF, Hsu WL, Tzen JTC. Theacrine and strictinin, two major ingredients for the anti-influenza activity of Yunnan Kucha tea. JOURNAL OF ETHNOPHARMACOLOGY 2020; 262:113190. [PMID: 32730889 DOI: 10.1016/j.jep.2020.113190] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 07/13/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kucha tea plant (Camellia assamica var. kucha Chang et Wang) is regarded as a mutant variety of wild Pu'er tea plant found in few mountain areas of Yunnan, China. Its fresh young leaves and shoots are picked by the indigenous aborigines in these local areas to prepare an herbal tea for the treatment of common cold empirically. MATERIALS AND METHODS Two extra compounds of relative abundance were detected in Kucha tea in comparison with Pu'er tea, and their chemical structures were identified as chlorogenic acid and theacrine. These two compounds as well as two major compounds, strictinin and caffeine, in Kucha tea were evaluated for their cytotoxicity and inhibitory effects on human influenza virus A/Puerto Rico/8/34 by analyzing viral protein expression and progeny production. RESULTS No or low cytotoxicity was detected for the four Kucha compounds when their concentrations were below 100 μM. Expression of viral NS1 protein was significantly inhibited by chlorogenic acid, theacrine or strictinin, but not caffeine at a concentration of 100 μM. The relative inhibitory potency was detected as chlorogenic acid < theacrine < strictinin, and both theacrine and strictinin displayed significant inhibition at a concentration of 50 μM. According to a plaque assay, viral progeny production was significantly reduced by theacrine or strictinin, but not by chlorogenic acid or caffeine under the same concentration of 100 μM. CONCLUSION It is suggested that theacrine and strictinin are two major ingredients responsible for the anti-influenza activity of Yunnan Kucha tea traditionally used for the treatment of common cold.
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Affiliation(s)
- Pei-Rong Lin
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 402, Taiwan
| | - Ping-Chung Kuo
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan
| | - Yue-Chiun Li
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 402, Taiwan
| | - Cian-Fen Jhuo
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 402, Taiwan
| | - Wei-Li Hsu
- Graduate Institute of Microbiology and Public Health, National Chung-Hsing University, Taichung, 402, Taiwan.
| | - Jason T C Tzen
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 402, Taiwan.
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Baiyacha, a wild tea plant naturally occurring high contents of theacrine and 3″-methyl-epigallocatechin gallate from Fujian, China. Sci Rep 2020; 10:9715. [PMID: 32546720 PMCID: PMC7297968 DOI: 10.1038/s41598-020-66808-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/27/2020] [Indexed: 02/05/2023] Open
Abstract
Baiyacha (BYC) is a kind of wild tea plant growing and utilizing in the remote mountain area of Fujian province, Southeastern China. However, scientific studies on this plant remain limited. Our results showed that BYC exhibits the typical morphological characteristics of Camellia gymnogyna Chang, a closely related species of C. sinensis (L.) O. Kuntze, which was not found in Fujian before. Chemical profiling revealed that parts of BYC plants are rich in purine alkaloids and catechins, especially featuring high levels of theacrine and 3″-methyl-epigallocatechin gallate (EGCG3″Me), chemical compounds with multiple biological activities that are rarely observed in regular tea plants. The contents of EGCG3″Me and theacrine in BYC both increased with the leaf maturity of tea shoots, whereas the caffeine content decreased significantly. The obtained results provide abundant information about the morphology and chemical compounds of BYC and may be used for tea production, breeding, and scientific research in the future.
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Novel insight into theacrine metabolism revealed by transcriptome analysis in bitter tea (Kucha, Camellia sinensis). Sci Rep 2020; 10:6286. [PMID: 32286351 PMCID: PMC7156766 DOI: 10.1038/s41598-020-62859-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 03/19/2020] [Indexed: 12/18/2022] Open
Abstract
Kucha (Camellia sinensis) is a kind of unique wild tea resources in southwest China, containing sizeable amounts of theacrine (1,3,7,9-tetramethyluric acid) and having a special bitter taste both in fresh leaves and made tea. Theacrine has good healthy function locally. But the molecular mechanism of theacrine metabolism in Kucha was still unclear. In order to illuminate the biosynthesis and catabolism of theacrine in Kucha plants, three tea cultivars, C. sinensis ‘Shangyou Zhongye’ (SY) with low-theacrine, ‘Niedu Kucha 2’ (ND2) with middle-theacrine and, ‘Niedu Kucha 3’ (ND3) with high-theacrine, were used for our research. Purine alkaloid analysis and transcriptome of those samples were performed by High Performance Liquid Chromatography (HPLC) and RNA-Seq, respectively. The related gene expression levels of purine alkaloid were correlated with the content of purine alkaloid, and the results of quantitative real-time (qRT) PCR were also confirmed the reliability of transcriptome. Based on the data, we found that theacrine biosynthesis is a relatively complex process, N-methyltransferase (NMT) encoded by TEA024443 may catalyze the methylation at 9-N position in Kucha plant. Our finding will assist to reveal the molecular mechanism of theacrine biosynthesis, and be applied to selection and breeding of Kucha tea cultivars in the future.
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Safety of Short-Term Supplementation with Methylliberine (Dynamine ®) Alone and in Combination with TeaCrine ® in Young Adults. Nutrients 2020; 12:nu12030654. [PMID: 32121218 PMCID: PMC7146520 DOI: 10.3390/nu12030654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 12/20/2022] Open
Abstract
Methylliberine (Dynamine®; DYM) and theacrine (Teacrine®; TCR) are purine alkaloids purported to have similar neuro-energetic effects as caffeine. There are no published human safety data on DYM, and research on TCR is limited. The purpose of this study was to examine the effect of four weeks of DYM supplementation with and without TCR on cardiovascular function and blood biomarkers. One-hundred twenty-five men and women (mean age 23.0 yrs, height 169.7 cm, body mass 72.1 kg; n = 25/group) were randomly assigned to one of five groups: low-dose DYM (100 mg), high-dose DYM (150 mg), low-dose DYM with TCR (100 mg + 50 mg), high-dose DYM with TCR (150 mg + 25 mg) , and placebo. Regardless of group and sex, significant main effects for time were noted for heart rate, systolic blood pressure, and QTc (p < 0.001), high-density lipoproteins (p = 0.002), mean corpuscular hemoglobin (p = 0.018), basophils (p = 0.006), absolute eosinophils (p = 0.010), creatinine (p = 0.004), estimated glomerular filtration rate (p = 0.037), chloride (p = 0.030), carbon dioxide (p = 0.023), bilirubin (p = 0.027), and alanine aminotransferase (p = 0.043), among others. While small changes were found in some cardiovascular and blood biomarkers, no clinically significant changes occurred. This suggests that DYM alone or in combination with TCR consumed at the dosages used in this study does not appear to negatively affect markers of health over four weeks of continuous use.
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Gao M, Zheng J, Zheng C, Huang Z, Huang Q. Theacrine alleviates chronic inflammation by enhancing TGF-β-mediated shifts via TGF-β/SMAD pathway in Freund's incomplete adjuvant-induced rats. Biochem Biophys Res Commun 2019; 522:743-748. [PMID: 31791581 DOI: 10.1016/j.bbrc.2019.11.126] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 11/19/2019] [Indexed: 11/19/2022]
Abstract
Rheumatoid arthritis is a chronic and systemic autoimmune disease, which affects approximately 1% of the adult population worldwide. The present study investigated the therapeutic effect of theacrine (TC) on arthritis and its mechanisms in Freund's incomplete adjuvant (FIA)-induced SD rats. Rats were randomly divided into 5 groups: i) healthy control; ii) model; iii) positive control with methotrexate (MTX); iv) treatment with 12.5 mg/kg TC; and v) treatment with 25.0 mg/kg TC. The apparent scores, including changes in body weights, degree of paw swelling and arthritis indicators, were analyzed to evaluate the anti-chronic inflammatory effect of TC. The levels of interleukin (IL)-6 and transforming growth factor-β (TGF-β) in serum were measured by enzyme-linked immunosorbent assay. The protein and RNA expression levels of the critical factors in rats were measured to elucidate the mechanisms responsible for chronic inflammation and to verify molecular indexes of chronic inflammatory conditions. TC notably suppressed the severity of FIA-induced rat by attenuating the apparent scores, animal weight and inflammatory indexes in the 25 mg/kg TC group compared with the FIA rat model. Furthermore, TC significantly decreased the levels of IL-6 and increased the levels of TGF-β. Histopathological examinations indicated that TC rescued the synovial hyperplasia and inflammatory cell infiltration in joint tissues. In addition, TC enhanced TGF-β-mediated shifts in inflammatory marker expression in joint tissue. Overall, the present study demonstrated that TC exerted a superior anti-arthritic effect via the suppression of IL-6 and the activation of TGF-β by the TGF-β/SMAD pathway.
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Affiliation(s)
- Ming Gao
- The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, 310003, China
| | - Jun Zheng
- The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, 310003, China
| | - Chao Zheng
- The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, 310003, China
| | - Zhiyuan Huang
- The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, 310003, China
| | - Qinwei Huang
- Zhejiang Institute for Food and Drug Control, Zhejiang, 310052, China.
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Cesareo KR, Mason JR, Saracino PG, Morrissey MC, Ormsbee MJ. The effects of a caffeine-like supplement, TeaCrine®, on muscular strength, endurance and power performance in resistance-trained men. J Int Soc Sports Nutr 2019; 16:47. [PMID: 31660991 PMCID: PMC6816173 DOI: 10.1186/s12970-019-0316-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 10/03/2019] [Indexed: 01/07/2023] Open
Abstract
Background TeaCrine® is the synthetic version to naturally occurring theacrine (1, 3, 7, 9-tetramethyluric acid) found in the leaves of Camellia kucha tea plants. A few studies have examined the effects of TeaCrine® on cognitive perception, but no research exists examining its effects on resistance exercise performance. The purpose of this study was to determine the efficacy of TeaCrine®, a caffeine-like compound, on maximal muscular strength, endurance, and power performance in resistance-trained men. Methods Twelve resistance-trained men participated in a randomized, double-blind, cross-over designed study. Each participant performed one-repetition maximum (1RM) bench press, 1RM squat, bench press repetitions to failure (RTF) at 70% 1RM, squat RTF at 70% 1RM, and 2-km rowing time trial 90 min after consumption of: (1) Caffeine 300 mg (CAFF300); (2) TeaCrine® 300 mg (TEA300); (3) TeaCrine® + Caffeine (COMBO; 150 mg/150 mg); (4) Placebo 300 mg (PLA). Power and velocity were measured using a TENDO Power Analyzer. Visual analogue scales for energy, focus, motivation to exercise, and fatigue were administered at baseline and 90 min post-treatment ingestion (pre-workout). Rating of perceived exertion was assessed after bench press RTF and squat RTF. Results There were no differences between groups for 1RM, RTF, and power in the bench press and squat exercises. Only CAFF300 resulted in significant increases in perceived energy and motivation to exercise vs. TEA300 and PLA (Energy: + 9.8%, 95% confidence interval [3.3–16.4%], p < 0.01; + 15.3%, 95% CI [2.2–28.5%], p < 0.02; Motivation to exercise: + 8.9%, 95% CI [0.2–17.6%], p = 0.04, + 14.8%, 95% CI [4.7–24.8%], p < 0.01, respectively) and increased focus (+ 9.6%, 95% CI [2.1–17.1%], p = 0.01) vs. TEA300, but there were no significant differences between CAFF300 and COMBO (Energy + 3.9% [− 6.9–14.7%], Focus + 2.5% [− 6.3–11.3%], Motivation to exercise + 0.5% [− 11.6–12.6%]; p > 0.05). Conclusion Neither TEA300, CAFF300, COMBO, or PLA (when consumed 90 min pre-exercise) improved muscular strength, power, or endurance performance in resistance-trained men. Only CAFF300 improved measures of focus, energy, and motivation to exercise.
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Affiliation(s)
- Kyle R Cesareo
- Department of Nutrition, Food & Exercise Sciences, Institute of Sports Sciences & Medicine, Florida State University, 1104 Spirit Way, Tallahassee, FL, 32306, USA.,The Center for Applied Health Sciences, Canfield, OH, 44515, USA
| | - Justin R Mason
- Department of Nutrition, Food & Exercise Sciences, Institute of Sports Sciences & Medicine, Florida State University, 1104 Spirit Way, Tallahassee, FL, 32306, USA.,Deparment of Occupational Therapy, University of Florida, Gainesville, FL, 32611, USA
| | - Patrick G Saracino
- Department of Nutrition, Food & Exercise Sciences, Institute of Sports Sciences & Medicine, Florida State University, 1104 Spirit Way, Tallahassee, FL, 32306, USA
| | - Margaret C Morrissey
- Department of Nutrition, Food & Exercise Sciences, Institute of Sports Sciences & Medicine, Florida State University, 1104 Spirit Way, Tallahassee, FL, 32306, USA.,Korey Stringer Institute, Department of Kinesiology, University of Connecticut, Storrs, CT, 60268, USA
| | - Michael J Ormsbee
- Department of Nutrition, Food & Exercise Sciences, Institute of Sports Sciences & Medicine, Florida State University, 1104 Spirit Way, Tallahassee, FL, 32306, USA. .,Discipline of Biokinetics, Exercise and Leisure Sciences, University of KwaZulu-Natal, Durban, South Africa.
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Ko JH, Yang MH, Baek SH, Nam D, Jung SH, Ahn KS. Theacrine attenuates epithelial mesenchymal transition in human breast cancer MDA-MB-231 cells. Phytother Res 2019; 33:1934-1942. [PMID: 31172618 DOI: 10.1002/ptr.6389] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 10/22/2018] [Accepted: 04/23/2019] [Indexed: 12/21/2022]
Abstract
Theacrine, a purine alkaloid structurally similar to caffeine, has recently become of interest as a potential therapeutic compound. Here, we investigated the antimetastatic potential of theacrine on human breast cancer MDA-MB-231 cells. We observed that theacrine can reverse epithelial-to-mesenchymal transition (EMT), which resulted in a decrease in the levels of mesenchymal markers (Fibronectin, Vimentin, N-cadherin, Twist, and Snail) and an increase in the levels of epithelial markers (Occludin and E-cadherin) in the cells. Additionally, theacrine attenuates TGF-β-induced EMT, cell adhesion, migration, and invasion in MDA-MB-231 cells. Overall, our results suggest that theacrine may inhibit the breast cancer cell metastasis by reversing the EMT process.
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Affiliation(s)
- Jeong-Hyeon Ko
- College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Min Hee Yang
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul, Republic of Korea
| | - Seung Ho Baek
- College of Korean Medicine, Woosuk University, Wanju, Republic of Korea
| | - Dongwoo Nam
- College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Sang Hoon Jung
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul, Republic of Korea
| | - Kwang Seok Ahn
- College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.,KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul, Republic of Korea
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Pandolfi F, Mattiello L, Zane D, Feroci M. Electrochemical behaviour of 9-methylcaffeinium iodide and in situ electrochemical synthesis of hymeniacidin. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.05.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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22
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Sheikhi-Mohammareh S, Shiri A. An Alternative Regioselective Approach for the Synthesis of Highly Functionalized Derivatives of Pyrazolo[5,1- b
]purine Scaffold. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3242] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Ali Shiri
- Department of Chemistry, Faculty of Science; Ferdowsi University of Mashhad; Mashhad 91775-1436 Iran
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He H, Ma D, Crone LB, Butawan M, Meibohm B, Bloomer RJ, Yates CR. Assessment of the Drug-Drug Interaction Potential Between Theacrine and Caffeine in Humans. JOURNAL OF CAFFEINE RESEARCH 2017; 7:95-102. [PMID: 28875060 DOI: 10.1089/jcr.2017.0006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective: Theacrine, a methylurate class purine alkaloid, triggers diverse pharmacologic responses, including psychostimulatory activity by modulation of adenosinergic and dopaminergic pathways. In a double-blind, placebo-controlled study, theacrine increased energy, concentration, and mood, while reducing fatigue. Because caffeine, a methylxanthine purine alkaloid, is frequently coadministered with theacrine, we sought to determine if a pharmacokinetic and/or pharmacodynamic interaction existed between theacrine and caffeine. Methods: Eight healthy adults received theacrine, as TeaCrine® (25 or 125 mg), caffeine (150 mg), or a combination of theacrine (125 mg) and caffeine (150 mg) in a randomized, double-blind crossover study. Blood samples were collected over a 24-hour period and analyzed by Liquid chromatrography-mass spectrometry/mass spectrometry (LC-MS/MS) for theacrine, caffeine, and paraxanthine. Pharmacodynamic response markers, heart rate and blood pressure, were recorded. Results: Theacrine pharmacokinetics was similar following administration of theacrine alone. Caffeine coadministration increased maximum plasma concentration and area under the curve of theacrine without altering theacrine half-life. Theacrine had no impact on caffeine or paraxanthine pharmacokinetics. There was no difference between treatment groups with regard to heart rate or systolic/diastolic blood pressure. Conclusions: Coadministration of theacrine and caffeine results in a clinically significant pharmacokinetic interaction, viz., increased theacrine exposure. Enhanced oral bioavailability is the most likely mechanism by which caffeine alters theacrine exposure. However, further studies examining the contribution of presystemic elimination mechanisms, for example, efflux transport and/or gut metabolism, to theacrine bioavailability are needed to confirm the exact mechanism(s). Hemodynamic parameters were unaltered despite the pharmacokinetic interaction, suggesting that coadministration of caffeine and theacrine is safe at the doses administered.
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Affiliation(s)
- Hui He
- Department of Pharmaceutical Sciences, University of Tennessee College of Pharmacy, Memphis, Tennessee
| | - Dejian Ma
- Department of Pharmaceutical Sciences, University of Tennessee College of Pharmacy, Memphis, Tennessee
| | - Laura Brooks Crone
- Cardiorespiratory/Metabolic Laboratory, School of Health Studies, University of Memphis, Memphis, Tennessee
| | - Matthew Butawan
- Cardiorespiratory/Metabolic Laboratory, School of Health Studies, University of Memphis, Memphis, Tennessee
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, University of Tennessee College of Pharmacy, Memphis, Tennessee
| | - Richard J Bloomer
- Cardiorespiratory/Metabolic Laboratory, School of Health Studies, University of Memphis, Memphis, Tennessee
| | - Charles R Yates
- Department of Pharmaceutical Sciences, University of Tennessee College of Pharmacy, Memphis, Tennessee
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Qiao H, Ye X, Bai X, He J, Li T, Zhang J, Zhang W, Xu J. Theacrine: A purine alkaloid from Camellia assamica var. kucha with a hypnotic property via the adenosine system. Neurosci Lett 2017; 659:48-53. [PMID: 28864241 DOI: 10.1016/j.neulet.2017.08.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 08/23/2017] [Accepted: 08/28/2017] [Indexed: 10/19/2022]
Abstract
Theacrine (l,3,7,9-tetramethyluric acid), a purine alkaloid from Camellia assamica var. kucha, has diverse pharmacological properties, including sedative and hypnotic activities, anti-inflammatory and analgesic activities, antidepressant effects, and a protective effect against stress-provoked liver damage. The present study aims to investigate the possible mechanism of the hypnotic activity of theacrine. The results revealed that theacrine significantly enhanced pentobarbital-induced sleep at a dose of 3.0mg/kg (i.g.) in mice. Sleep parameter analysis by EEG and EMG showed that theacrine obviously shortened wake time and increased NREM sleep time and that theacrine almost had no effect on REM sleep. Meanwhile, theacrine markedly attenuated caffeine (a nonselective antagonist of adenosine receptor)-induced insomnia. In pretreatment with the adenosine A1 receptor antagonist DPCPX and the A2A receptor antagonist SCH 58261, theacrine significantly reversed the decrease in sleeping time in pentobarbital-treated mice. In addition, theacrine also markedly increased the adenosine content in the hippocampus of rats. These results suggested that theacrine might mediate the adenosine system to augment pentobarbital-induced sleep.
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Affiliation(s)
- Haoyi Qiao
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 100029, China; Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China
| | - Xiansheng Ye
- School of Chinese Medicine Sciences, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xiaoyu Bai
- Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jun He
- Department of Pharmacy, China-Japan Friendship Hospital, Beijing 100029, China
| | - Tingli Li
- School of Chinese Medicine Sciences, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Jia Zhang
- School of Chinese Medicine Sciences, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Weiku Zhang
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China.
| | - Jiekun Xu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 100029, China.
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Li YF, Ouyang SH, Chang YQ, Wang TM, Li WX, Tian HY, Cao H, Kurihara H, He RR. A comparative analysis of chemical compositions in Camellia sinensis var. puanensis Kurihara, a novel Chinese tea, by HPLC and UFLC-Q-TOF-MS/MS. Food Chem 2017; 216:282-8. [DOI: 10.1016/j.foodchem.2016.08.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 08/04/2016] [Accepted: 08/07/2016] [Indexed: 12/17/2022]
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Li Z, He J, Zhang Y, Wang QG, Zhao Y, Qu HH, Wang XQ, Kong H, Zhang WK, Xu JK. Development of an enzyme-linked immunosorbent assay using specific monoclonal antibodies against theacrine and its application. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.06.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Li KK, Wong HL, Hu T, Zhang C, Han XQ, Ye CX, Leung PC, Cheng BH, Ko CH. Impacts ofCamelliakucha and its main chemical components on the lipid accumulation in 3T3-L1 adipocytes. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13236] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kai Kai Li
- College of Food Science and Technology; Huazhong Agricultural University; Wuhan 430070 China
- Institute of Chinese Medicine; The Chinese University of Hong Kong; Shatin New Territories Hong Kong SAR 999077 China
| | - Hing Lok Wong
- Institute of Chinese Medicine; The Chinese University of Hong Kong; Shatin New Territories Hong Kong SAR 999077 China
| | - Tianyong Hu
- Shenzhen Key Laboratory of ENT; Longgang ENT hospital & Institute of ENT; Shenzhen 518172 China
| | - Cheng Zhang
- Institute of Chinese Medicine; The Chinese University of Hong Kong; Shatin New Territories Hong Kong SAR 999077 China
| | - Xiao Qiang Han
- Institute of Chinese Medicine; The Chinese University of Hong Kong; Shatin New Territories Hong Kong SAR 999077 China
| | - Chuang Xing Ye
- Department of Biology; School of Life Sciences; Sun Yat-Sen University; Guangzhou 510275 China
| | - Ping Chung Leung
- Institute of Chinese Medicine; The Chinese University of Hong Kong; Shatin New Territories Hong Kong SAR 999077 China
| | - Bao Hui Cheng
- Shenzhen Key Laboratory of ENT; Longgang ENT hospital & Institute of ENT; Shenzhen 518172 China
| | - Chun Hay Ko
- Institute of Chinese Medicine; The Chinese University of Hong Kong; Shatin New Territories Hong Kong SAR 999077 China
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A 90-Day Oral Toxicological Evaluation of the Methylurate Purine Alkaloid Theacrine. J Toxicol 2016; 2016:6206859. [PMID: 27635133 PMCID: PMC5011229 DOI: 10.1155/2016/6206859] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/11/2016] [Accepted: 07/21/2016] [Indexed: 01/19/2023] Open
Abstract
A 90-day repeated-dose oral toxicological evaluation was conducted according to GLP and OECD guidelines on the methylurate purine alkaloid theacrine, which is found naturally in certain plants. Four groups of Hsd.Brl.Han Wistar rats (ten/sex/group) were administered theacrine by gavage doses of 0 (vehicle only), 180, 300, and 375 mg/kg bw/day. Two females and one male in the 300 and 375 mg/kg bw/day groups, respectively, died during the study. Histological examination revealed centrilobular hepatocellular necrosis as the probable cause of death. In 375 mg/kg bw/day males, slight reductions in body weight development, food consumption, and feed efficiency, decreased weight of the testes and epididymides and decreased intensity of spermatogenesis in the testes, lack or decreased amount of mature spermatozoa in the epididymides, and decreased amount of prostatic secretions were detected at the end of the three months. At 300 mg/kg bw/day, slight decreases in the weights of the testes and epididymides, along with decreased intensity of spermatogenesis in the testes, and lack or decreased amount of mature spermatozoa in the epididymides were detected in male animals. The NOAEL was considered to be 180 mg/kg bw/day, as at this dose there were no toxicologically relevant treatment-related findings in male or female animals.
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Ziegenfuss TN, Habowski SM, Sandrock JE, Kedia AW, Kerksick CM, Lopez HL. A Two-Part Approach to Examine the Effects of Theacrine (TeaCrine®) Supplementation on Oxygen Consumption, Hemodynamic Responses, and Subjective Measures of Cognitive and Psychometric Parameters. J Diet Suppl 2016; 14:9-24. [DOI: 10.1080/19390211.2016.1178678] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | | | | | | | - Chad M. Kerksick
- School of Sport, Recreation and Exercise Sciences, Exercise, Nutrition and Performance Laboratory, Lindenwood University, St. Charles, MO, USA
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Maddila S, Momin M, Lavanya P, Rao CV. An efficient and eco-friendly synthesis of 6-chloro-8-substituted-9H-purines using cellulose sulfuric acid as a reusable catalyst under solvent-free conditions. JOURNAL OF SAUDI CHEMICAL SOCIETY 2016. [DOI: 10.1016/j.jscs.2012.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Taylor L, Mumford P, Roberts M, Hayward S, Mullins J, Urbina S, Wilborn C. Safety of TeaCrine®, a non-habituating, naturally-occurring purine alkaloid over eight weeks of continuous use. J Int Soc Sports Nutr 2016; 13:2. [PMID: 26766930 PMCID: PMC4711067 DOI: 10.1186/s12970-016-0113-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 01/06/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Theacrine (1,3,7,9-tetramethyluric acid) is a purine alkaloid found in certain coffee (Coffea) species, fruits (Cupuacu [Theobroma grandiflorum]), and tea (Camellia assamica, var. kucha) that has anti-inflammatory, analgesic, and neuro-locomotor properties. Recent preliminary research has also reported increased feelings of energy, reduced fatigue, and strong effects on improving focus, concentration, and motivation to exercise. The purpose of this study was to examine the safety and non-habituating effects of TeaCrine®, a nature-identical, chemically equivalent bioactive version of theacrine. METHODS Sixty healthy men (mean ± SD age, height, weight: 22.9 ± 4.7 years, 183.5 ± 9.2 cm, 86.5 ± 13.7 kg) and women (22.3 ± 4.5 years, 165.2 ± 12.3 cm, 69.0 ± 17.4 kg) were placed into one of three groups: placebo (PLA, n = 20), 200 mg TeaCrine® (LD, n = 19) or 300 mg Teacrine® (HD, n = 21) and ingested their respective supplement once daily for 8 weeks. Primary outcomes were fasting clinical safety markers (heart rate, blood pressure, lipid profiles, hematologic blood counts, biomarkers of liver/kidney/immune function) and energy, focus, concentration, anxiety, motivation to exercise, and POMS measured prior to daily dosing to ascertain potential tachyphylactic responses and habituation effects. Data were analyzed via two-way (group × time) ANOVAs and statistical significance was accepted at p < 0.05. RESULTS All values for clinical safety markers fell within normal limits and no group × time interactions were noted. No evidence of habituation was noted as baseline values for energy, focus, concentration, anxiety, motivation to exercise, and POMS remained stable in all groups across the 8-week study protocol. CONCLUSIONS These findings support the clinical safety and non-habituating neuro-energetic effects of TeaCrine® supplementation over 8 weeks of daily use (up to 300 mg/day). Moreover, there was no evidence of a tachyphylactic response that is typical of neuroactive agents such as caffeine and other stimulants.
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Affiliation(s)
- Lem Taylor
- Department of Exercise and Sport Science, Human Performance Lab & Exercise Biochemistry Lab, University of Mary Hardin-Baylor, Belton, TX USA
| | - Petey Mumford
- School of Kinesiology, Auburn University, Auburn, AL USA
| | - Mike Roberts
- School of Kinesiology, Auburn University, Auburn, AL USA
| | - Sara Hayward
- Department of Exercise and Sport Science, Human Performance Lab & Exercise Biochemistry Lab, University of Mary Hardin-Baylor, Belton, TX USA
| | - Jacy Mullins
- Department of Exercise and Sport Science, Human Performance Lab & Exercise Biochemistry Lab, University of Mary Hardin-Baylor, Belton, TX USA
| | - Stacie Urbina
- Department of Exercise and Sport Science, Human Performance Lab & Exercise Biochemistry Lab, University of Mary Hardin-Baylor, Belton, TX USA
| | - Colin Wilborn
- Department of Exercise and Sport Science, Human Performance Lab & Exercise Biochemistry Lab, University of Mary Hardin-Baylor, Belton, TX USA
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Cognitive Performance and Mood Following Ingestion of a Theacrine-Containing Dietary Supplement, Caffeine, or Placebo by Young Men and Women. Nutrients 2015; 7:9618-32. [PMID: 26610558 PMCID: PMC4663612 DOI: 10.3390/nu7115484] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 11/05/2015] [Accepted: 11/09/2015] [Indexed: 01/07/2023] Open
Abstract
Theacrine is a purine alkaloid found primarily in the leaves of the Camellia Kucha plant and is now included within dietary supplements. To compare the effects of a theacrine-containing dietary supplement with caffeine and placebo on energy and mood, as well as objective measures of cognitive performance, heart rate, and blood pressure, 10 healthy men (20.8 ± 0.7 years) and 10 healthy women (22.2 ± 1.1 years) ingested the dietary supplement TheaTrim (Purus Labs; containing a branded form of theacrine (Teacrine™) and caffeine (150 mg)), caffeine only (150 mg), or a placebo on three different days, separated by approximately one week. Before, and for up to 4 h following, ingestion of the assigned condition, subjects completed a subjective assessment of energy and mood, as well as tests of cognitive performance (trail making test (TMT), digit symbol substitution test (DSST)), and reaction time. Heart rate and blood pressure were measured. No condition or interaction effects were noted for TMT, DSST, or reaction time, despite a trend for improvement in selected variables with both TheaTrim and caffeine treatment. Condition effects or trends were noted for subjective feelings, with values for attentive, alert, focused, and energetic higher for TheaTrim than for placebo and caffeine, while values for lethargic and groggy were lower for TheaTrim than for placebo and caffeine. Heart rate and blood pressure were largely unaffected by treatment. These data indicate that TheaTrim treatment does not result in a statistically significant improvement in cognitive performance but may favorably impact multiple subjective feelings related to energy and mood.
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Li YF, Chen M, Wang C, Li XX, Ouyang SH, He CC, Mao ZF, Tsoi B, Kurihara H, He RR. Theacrine, a purine alkaloid derived from Camellia assamica var. kucha , ameliorates impairments in learning and memory caused by restraint-induced central fatigue. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Abdoli M, Mirjafary Z, Saeidian H, Kakanejadifard A. New developments in direct functionalization of C–H and N–H bonds of purine bases via metal catalyzed cross-coupling reactions. RSC Adv 2015. [DOI: 10.1039/c5ra04406e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This review provides a concise overview on the cross-coupling reactions in direct functionalization of purine bases in recent years.
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Affiliation(s)
- Morteza Abdoli
- Department of Chemistry
- Lorestan University
- Khorramabad
- Iran
| | - Zohreh Mirjafary
- Department of Chemistry
- Tehran Science and Research Branch
- Islamic Azad University
- Tehran
- Iran
| | - Hamid Saeidian
- Department of Science
- Payame Noor University (PNU)
- Tehran
- Iran
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Khan A, Iqbal Z, Khan A, Khan I, Nasir F, Khan I, Khan JA. Pharmacokinetic Profiling of a Novel Flavonoid “Viscosine” from Dodonaea viscosa Using High Performance Liquid Chromatography. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2014.883542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Amirzada Khan
- a Department of Pharmacy , University of Peshawar , Peshawar , Pakistan
| | - Zafar Iqbal
- a Department of Pharmacy , University of Peshawar , Peshawar , Pakistan
| | - Abad Khan
- b Department of Pharmacy , University of Swabi , Swabi , Pakistan
| | - Inamullah Khan
- a Department of Pharmacy , University of Peshawar , Peshawar , Pakistan
| | - Fazli Nasir
- a Department of Pharmacy , University of Peshawar , Peshawar , Pakistan
| | - Ismail Khan
- a Department of Pharmacy , University of Peshawar , Peshawar , Pakistan
| | - Jamshaid Ali Khan
- a Department of Pharmacy , University of Peshawar , Peshawar , Pakistan
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Wang SB, Jin P, Li FN, Quan ZS. Synthesis and anticonvulsant activity of novel purine derivatives. Eur J Med Chem 2014; 84:574-83. [PMID: 25062008 DOI: 10.1016/j.ejmech.2014.07.074] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 07/19/2014] [Accepted: 07/21/2014] [Indexed: 01/09/2023]
Abstract
A series of new purines containing triazole and other heterocycle substituents was synthesized and evaluated for their preliminary anticonvulsant activity and neurotoxicity by using the maximal electroshock (MES), subcutaneous pentylenetetrazole (scPTZ) and rotarod neurotoxicity (TOX) tests. Among the compounds studied, 9-decyl-6-(1H-1,2,4-triazol-1-yl)-9H-purine (5e) was the most potent compound, with a median effective dose of 23.4 mg/kg and a high protective index of more than 25.6 after intraperitoneal administration in mice. Compound 5e showed significant oral activity against MES-induced seizures in mice, with an ED50 of 39.4 mg/kg and a PI above 31.6. These results demonstrate that compound 5e possesses better anticonvulsant activity and is safer than the commercially available drugs carbamazepine and valproate in MES, scPTZ and TOX models.
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Affiliation(s)
- Shi-Ben Wang
- College of Pharmacy, Yanbian University, No. 977, Park Road, Yanji, Jilin, 133002, China
| | - Peng Jin
- Department of Pharmacology, Ischemic/Hypoxic Disease Institute, Seoul National University, College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 110-799, Republic of Korea
| | - Fu-Nan Li
- School of Pharmaceutical Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian, 361102, China.
| | - Zhe-Shan Quan
- College of Pharmacy, Yanbian University, No. 977, Park Road, Yanji, Jilin, 133002, China.
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Wang SB, Deng XQ, Liu DC, Zhang HJ, Quan ZS. Synthesis and evaluation of anticonvulsant and antidepressant activities of 7-alkyl-7H-tetrazolo[1,5-g]purine derivatives. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1030-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Li WX, Li YF, Zhai YJ, Chen WM, Kurihara H, He RR. Theacrine, a purine alkaloid obtained from Camellia assamica var. kucha, attenuates restraint stress-provoked liver damage in mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:6328-6335. [PMID: 23678853 DOI: 10.1021/jf400982c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Theacrine (1,3,7,9-tetramethyluric acid), a purine alkaloid, has proven to be beneficial in maintaining several brain functions and is being studied for potential medicinal uses in recent years. In this study, we isolated theacrine from Camellia assamica var. kucha and investigated its protective effects on liver damage induced by restraint stress in mice. Results showed that 18 h of restraint stress could induce liver damage, with an obvious increase in levels of plasma alanine aminotransferase (ALT) and aspartate aminotransferase (AST). This finding was further confirmed by hepatic pathological examination, which showed inflammatory cell infiltration and focal necrosis of hepatocytes. However, oral administration of theacrine (10, 20, 30 mg/kg for 7 consecutive days) was found to decrease plasma ALT and AST levels, reduce hepatic mRNA levels of inflammatory mediators (IL-1β, TNF-α, IL-6, and IFN-γ), and reverse the histologic damages in stressed mice. Simultaneously, theacrine also significantly decreased the content of malondialdehyde and increased oxygen radical absorbance capacity (ORAC) level in the plasma and liver of stressed mice. These results suggested that the protective effects of theacrine on stress-induced liver damage might be correlated with its antioxidative activity. The antioxidative capacity of theacrine was further evaluated by in vitro ORAC and cellular antioxidant activity assay. The results suggested that the antioxidative capacity of theacrine was not due to the direct action on free radical clearance. Moreover, the elevated activities and gene expressions of superoxide dismutase, catalase, and glutathione peroxidase, as well as the reduced activity of xanthine oxidase by theacrine treatment in stressed mice suggested that the antioxidative activity might be due to the strengthening of the antioxidant system in vivo. On the basis of the above results, theacrine is possibly a good candidate for protecting against or treating lifestyle diseases and might contribute to the study of natural products.
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Affiliation(s)
- Wei-Xi Li
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, China
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Feduccia AA, Wang Y, Simms JA, Yi HY, Li R, Bjeldanes L, Ye C, Bartlett SE. Locomotor activation by theacrine, a purine alkaloid structurally similar to caffeine: involvement of adenosine and dopamine receptors. Pharmacol Biochem Behav 2012; 102:241-8. [PMID: 22579816 DOI: 10.1016/j.pbb.2012.04.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 04/20/2012] [Accepted: 04/28/2012] [Indexed: 11/25/2022]
Abstract
Purine compounds, such as caffeine, have many health-promoting properties and have proven to be beneficial in treating a number of different conditions. Theacrine, a purine alkaloid structurally similar to caffeine and abundantly present in Camellia kucha, has recently become of interest as a potential therapeutic compound. In the present study, theacrine was tested using a rodent behavioral model to investigate the effects of the drug on locomotor activity. Long Evans rats were injected with theacrine (24 or 48 mg/kg, i.p.) and activity levels were measured. Results showed that the highest dose of theacrine (48 mg/kg, i.p.) significantly increased locomotor activity compared to control animals and activity remained elevated throughout the duration of the session. To test for the involvement of adenosine receptors underlying theacrine's motor-activating properties, rats were administered a cocktail of the adenosine A₁ agonist, N⁶-cyclopentyladenosine (CPA; 0.1 mg/kg, i.p.) and A(2A) receptor agonist 2-p-(2-carboxyethyl)phenethylamino-5'-N-ethylcarboxamidoadenosine (CGS-21680; 0.2 mg/kg, i.p.). Pre-treatment with theacrine significantly attenuated the motor depression induced by the adenosine receptor agonists, indicating that theacrine is likely acting as an adenosine receptor antagonist. Next, we examined the role of DA D₁ and D₂ receptor antagonism on theacrine-induced hyperlocomotion. Both antagonists, D₁R SCH23390 (0.1 or 0.05 mg/kg, i.p.) and D₂R eticlopride (0.1 mg/kg, i.p.), significantly reduced theacrine-stimulated activity indicating that this behavioral response, at least in part, is mediated by DA receptors. In order to investigate the brain region where theacrine may be acting, the drug (10 or 20 μg) was infused bilaterally into nucleus accumbens (NAc). Theacrine enhanced activity levels in a dose-dependent manner, implicating a role of the NAc in modulating theacrine's effects on locomotion. In addition, theacrine did not induce locomotor sensitization or tolerance after chronic exposure. Taken together, these findings demonstrate that theacrine significantly enhances activity; an effect which is mediated by both the adenosinergic and dopaminergic systems.
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Affiliation(s)
- Allison A Feduccia
- Ernest Gallo Clinic and Research Center, University of California at San Francisco, Emeryville, CA, USA
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Li K, Shi X, Yang X, Wang Y, Ye C, Yang Z. Antioxidative activities and the chemical constituents of two Chinese teas, Camellia kucha and C. ptilophylla. Int J Food Sci Technol 2012. [DOI: 10.1111/j.1365-2621.2012.02942.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Souto AL, Tavares JF, da Silva MS, Diniz MDFFM, de Athayde-Filho PF, Filho JMB. Anti-inflammatory activity of alkaloids: an update from 2000 to 2010. Molecules 2011; 16:8515-34. [PMID: 21989312 PMCID: PMC6264344 DOI: 10.3390/molecules16108515] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/07/2011] [Accepted: 09/26/2011] [Indexed: 12/13/2022] Open
Abstract
Many natural substances with proven anti-inflammatory activity have been isolated throughout the years. The aim of this review is to review naturally sourced alkaloids with anti-inflammatory effects reported from 2000 to 2010. The assays were conducted mostly in vivo, and carrageenan-induced pedal edema was the most used experimental model. Of the 49 alkaloids evaluated, 40 demonstrated anti-inflammatory activity. Of these the most studied type were the isoquinolines. This review was based on NAPRALERT data bank, Web of Science and Chemical Abstracts. In this review, 95 references are cited.
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Affiliation(s)
- Augusto Lopes Souto
- Laboratory of Pharmaceutical Technology, Federal University of Paraiba, 58051-900, João Pessoa-PB, Brazil; (A.L.S.); (J.F.T.); (M.S.S.); (M.F.F.M.D.)
| | - Josean Fechine Tavares
- Laboratory of Pharmaceutical Technology, Federal University of Paraiba, 58051-900, João Pessoa-PB, Brazil; (A.L.S.); (J.F.T.); (M.S.S.); (M.F.F.M.D.)
| | - Marcelo Sobral da Silva
- Laboratory of Pharmaceutical Technology, Federal University of Paraiba, 58051-900, João Pessoa-PB, Brazil; (A.L.S.); (J.F.T.); (M.S.S.); (M.F.F.M.D.)
| | | | | | - José Maria Barbosa Filho
- Laboratory of Pharmaceutical Technology, Federal University of Paraiba, 58051-900, João Pessoa-PB, Brazil; (A.L.S.); (J.F.T.); (M.S.S.); (M.F.F.M.D.)
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