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Vengrytė M, Raudonė L. Phytochemical Profiling and Biological Activities of Rhododendron Subsect. Ledum: Discovering the Medicinal Potential of Labrador Tea Species in the Northern Hemisphere. PLANTS (BASEL, SWITZERLAND) 2024; 13:901. [PMID: 38592945 PMCID: PMC10975282 DOI: 10.3390/plants13060901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 03/08/2024] [Accepted: 03/18/2024] [Indexed: 04/11/2024]
Abstract
Rhododendron subsect. Ledum is a distinct taxonomic subdivision within the genus Rhododendron, comprising a group of evergreen shrubs and small trees. This review will comprehensively analyse the phytochemical profiles and biological properties of the Rhododendron subsect. Ledum species subsect. Ledum consists of eight plant species indigenous to temperate and subarctic regions of the Northern Hemisphere, collectively known as Labrador tea. Recent investigations have concentrated on the phytochemical constituents of these plants due to limited data, emphasizing their evergreen nature and potential industrial significance. This review summarizes their major phytochemical constituents, including flavonoids, phenolic acids, and terpenoids, and discusses their potential biological activities, such as antioxidant, anti-inflammatory, antimicrobial, antitumor, hypoglycemic, hepatoprotective, neuroprotective, and cardioprotective effects. Traditional uses of these plant species align with scientific findings, emphasizing the significance of these plants in traditional medicine. However, despite promising results, gaps exist in our understanding of specific compounds' therapeutic effects, necessitating further research for comprehensive validation. This review serves as a valuable resource for researchers, identifying current knowledge, uncertainties, and emerging trends in the study of the Rhododendron subsect. Ledum species.
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Affiliation(s)
- Martyna Vengrytė
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania;
| | - Lina Raudonė
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania;
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
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Sharma BR, Jaiswal S, Ravindra PV. Modulation of gut microbiota by bioactive compounds for prevention and management of type 2 diabetes. Biomed Pharmacother 2022; 152:113148. [PMID: 35665671 DOI: 10.1016/j.biopha.2022.113148] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 05/10/2022] [Accepted: 05/15/2022] [Indexed: 01/08/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by hyperglycemia and insulin resistance. Gut microbiota (GM) are specific groups of microbes colonized in the gastrointestinal (GI) tract. They profoundly influence health, disease protection, and associated with metabolic activities, and play a vital role in the production of functional metabolites from dietary substances. Dysbiosis of GM has been linked to the onset of T2DM and can be altered to attain eubiosis by intervention with various nutritional bioactive compounds such as polyphenols, prebiotics, and probiotics. This review presents an overview of the evidence and underlying mechanisms by which bioactive compounds modulate the GM for the prevention and management of T2DM.
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Affiliation(s)
- Basista Rabina Sharma
- Department of Biochemistry, CSIR-Central Food Technological Research Institute (CFTRI), KRS Road, Opp. Rail Museum, Mysuru 570020, India
| | - Swarna Jaiswal
- School of Food Science and Environmental Health, College of Sciences and Health, Technological University Dublin - City Campus, Central Quad, Grangegorman, Dublin D07 ADY7, Ireland; Environmental Sustainability and Health Institute, Technological University Dublin - City Campus, Grangegorman, Dublin D07 H6K8, Ireland
| | - P V Ravindra
- Department of Biochemistry, CSIR-Central Food Technological Research Institute (CFTRI), KRS Road, Opp. Rail Museum, Mysuru 570020, India.
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Nurcahyanti ADR, Jap A, Lady J, Prismawan D, Sharopov F, Daoud R, Wink M, Sobeh M. Function of selected natural antidiabetic compounds with potential against cancer via modulation of the PI3K/AKT/mTOR cascade. Biomed Pharmacother 2021; 144:112138. [PMID: 34750026 DOI: 10.1016/j.biopha.2021.112138] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/19/2021] [Accepted: 08/31/2021] [Indexed: 12/12/2022] Open
Abstract
Diabetes mellitus (DM) is a metabolic disorder with growing global incidence, as 387 million people were diagnosed in 2014 with an expected projection of 642 million in 2040. Several complications are associated with DM including heart attack, stroke, kidney failure, blindness, and cancer. The latter is the second leading cause of death worldwide accounting for one in every six deaths, with liver, pancreas, and endometrium cancers are the most abundant among patients with diabetes. Phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway plays a vital role in developing a wide array of pathological disorders, among them diabetes and cancer. Natural secondary metabolites that counteract the deleterious effects of reactive oxygen species (ROS) and modulate PI3K/Akt/mTOR pathway could be a promising approach in cancer therapy. Here, 717 medicinal plants with antidiabetic activities were highlighted along with 357 bioactive compounds responsible for the antidiabetic activity. Also, 43 individual plant compounds with potential antidiabetic activities against cancer via the modulation of PI3K/Akt/mTOR cascade were identified. Taken together, the available data give an insight of the potential of repurposing medicinal plants and/or the individual secondary metabolites with antidiabetic activities for cancer therapy.
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Affiliation(s)
- Agustina Dwi Retno Nurcahyanti
- Department of Pharmacy, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Pluit Raya 2, 14440 Jakarta, Indonesia.
| | - Adeline Jap
- Department of Pharmacy, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Pluit Raya 2, 14440 Jakarta, Indonesia
| | - Jullietta Lady
- Department of Pharmacy, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Pluit Raya 2, 14440 Jakarta, Indonesia
| | - Deka Prismawan
- Department of Pharmacy, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Pluit Raya 2, 14440 Jakarta, Indonesia
| | - Farukh Sharopov
- Chinese-Tajik Innovation Center for Natural Products, National Academy of Sciences of Tajikistan, Ayni str. 299/2, 734063, Dushanbe, Tajikistan
| | - Rachid Daoud
- African Genome Center, Mohammed VI Polytechnic University (UM6P), Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany
| | - Mansour Sobeh
- AgroBiosciences Research, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150 Ben-Guerir, Morocco.
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Thomas P, Dong J. (-)-Epicatechin acts as a potent agonist of the membrane androgen receptor, ZIP9 (SLC39A9), to promote apoptosis of breast and prostate cancer cells. J Steroid Biochem Mol Biol 2021; 211:105906. [PMID: 33989703 DOI: 10.1016/j.jsbmb.2021.105906] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/19/2021] [Accepted: 04/27/2021] [Indexed: 01/07/2023]
Abstract
(-)-Epicatechin, a flavonoid present in high concentrations in foods such as green tea and cocoa, exerts beneficial and protective effects in numerous disease models, including anti-tumorigenesis and apoptosis in human breast and prostate cancer cells. Potential interactions of (-)-epicatechin and (+)-catechin with the membrane androgen receptor, ZIP9 (SLC39A9), which mediates androgen induction of apoptosis in these cancer cells, were investigated. Both (-)-epicatechin and (+)-catechin were effective competitors of [3H]-testosterone binding to PC-3 prostate cancer cells (nuclear androgen receptor-negative, nAR-null) overexpressing ZIP9 (PC3-ZIP9), with relative binding affinities of 75 % and 28 % that of testosterone, respectively. (-)-Epicatechin (200 nM) mimicked the effects of 100 nM testosterone in inducing apoptosis of PC3-ZIP9 cells, whereas (+)-catechin (concentration range 200 nM-1000 nM) did not significantly increase apoptosis and instead blocked the apoptotic response to testosterone. (-)-Epicatechin also activated androgen-dependent ZIP9 signaling pathways, inducing decreases in cAMP production and elevating intracellular free zinc levels, while (+)-catechin typically lacked these actions. Both (-)-epicatechin and (+)-catechin also bound to cell membranes of MDA-MB-468 breast cancer cells (nAR-null, high ZIP9 expression). MDA-MB-468 cells showed similar apoptotic, cAMP, and free zinc signaling responses to (-)-epicatechin to those observed in PC3-ZIP9 cells, as well as antagonism by (+)-catechin of testosterone-induced apoptosis and modulation of cAMP and caspase-3 levels. Moreover, knockdown of ZIP9 expression in MDA-MB-468 cells with siRNA decreased specific [3H]-testosterone binding of both catechins and blocked the apoptotic and free zinc responses to testosterone and (-)-epicatechin. The results indicate (-)-epicatechin is a potent ZIP9 agonist in breast and prostate cancer cells.
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Affiliation(s)
- Peter Thomas
- Marine Science Institute, University of Texas at Austin, 750 Channel View Drive, Port Aransas, TX, 78373, United States.
| | - Jing Dong
- Marine Science Institute, University of Texas at Austin, 750 Channel View Drive, Port Aransas, TX, 78373, United States
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Solubility of catechin and epicatechin from Arachis Hypogea skins wastes by using supercritical carbon dioxide-ethanol and its optimization. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-020-00797-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Dai L, He J, Miao X, Guo X, Shang X, Wang W, Li B, Wang Y, Pan H, Zhang J. Multiple Biological Activities of Rhododendron przewalskii Maxim. Extracts and UPLC-ESI-Q-TOF/MS Characterization of Their Phytochemical Composition. Front Pharmacol 2021; 12:599778. [PMID: 33732152 PMCID: PMC7957927 DOI: 10.3389/fphar.2021.599778] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 01/08/2021] [Indexed: 12/14/2022] Open
Abstract
Backgroud:Rhododendron przewalskii Maxim. is an evergreen shrub that is used as a traditional medicine in China. However, the modern pharmacology and the chemical components of this plant has not been studied. In this paper, we aimed to investigate the antifungal, anti-inflammatory and antioxidant activities and underlying mechanism of its aqueous and ethanol extracts, and analyze their chemical composition and active compounds of R. przewalskii. Methods: The antifungal activity was determined in vitro, and anti-inflammatory and antioxidant activities and underlying mechanism of its aqueous and ethanol extracts were evaluated in vitro and in RAW 264.7 cells. The chemical composition were analyzed using UPLC-ESI-Q-TOF/MS, and the contents of six compounds were determined via HPLC. Results: Both extracts of R. przewalskii showed promising anti-inflammatory activity in vitro; decreased the production of four inflammatory cytokines, namely, nitric oxide, IL-1β, IL-6 and TNF-ɑ, in RAW 264.7 cells induced by lipopolysaccharide; and exhibited weak cytotoxicity. The extracts significantly scavenged DPPH radicals, superoxide radicals and hydroxyl radicals to exert antioxidant effects in vitro. The two extracts also exhibited cellular antioxidant activity by increasing superoxide dismutase and CAT activities and decreasing malondialdehyde content in RAW 264.7 cells induced by LPS. However, the antifungal activity of the two extracts was weak. Nine flavonoids were identified by UPLC-ESI-Q-TOF/MS. Of these, six compounds were analyzed quantitatively, including avicularin, quercetin, azaleatin, astragalin and kaempferol, and five compounds (myricetin 3-O-galactoside, paeoniflorin, astragalin, azaleatin and kaempferol) were found in this species for the first time. These compounds demonstrated antioxidant activities that were similar to those of the R. przewalskii extracts and were thought to be the active compounds in the extracts. Conclusion:R. przewalskii extracts presented promising anti-inflammatory and antioxidant activities. The extracts contained amounts of valuable flavonoids (8.98 mg/g fresh material) that were likely the active compounds in the extract contributing to the potential antioxidant activity. These results highlight the potential of R. przewalskii as a source of natural antioxidant and anti-inflammatory agents for the pharmaceutical industry.
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Affiliation(s)
- Lixia Dai
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Jian He
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaolou Miao
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiao Guo
- Tibetan Medical College of Qinghai University, Xining, China.,State Key Laboratory of Tibetan Medicine Research and Development, Xining, China
| | - Xiaofei Shang
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China.,State Key Laboratory of Tibetan Medicine Research and Development, Xining, China
| | - Weiwei Wang
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Bing Li
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yu Wang
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Hu Pan
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Jiyu Zhang
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
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Arundita S, Ismed F, Rita RS, Putra DP. (+)-Catechin & Proanthocyanidin Fraction of Uncaria gambir Roxb. Improve Adipocytes Differentiation & Glucose Uptake of 3T3-L1 Cells Via Sirtuin-1, Peroxisome Proliferator-Activated Receptor γ (PPAR γ), Glucose Transporter Type 4 (GLUT-4) Expressions. Adv Pharm Bull 2020; 10:602-609. [PMID: 33072538 PMCID: PMC7539306 DOI: 10.34172/apb.2020.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/26/2019] [Accepted: 01/28/2020] [Indexed: 01/03/2023] Open
Abstract
Purpose: To improve adipocytes differentiation & glucose uptake activity of 3T3-L1 cells through sirtuin-1, peroxisome proliferator-activated receptor γ (PPAR γ), glucose transporter type 4 (GLUT-4) of (+)-catechin & proanthocyanidin fraction Uncaria gambir Roxb. Methods: Adipocytes differentiation activity of (+)-Catechin of Uncaria gambir Roxb. was determined by oil red O staining method & glucose uptake activity was determined by measuring 2-deoxyglucose uptake on 3T3-L1 cells. The ability of (+) - catechin as an activator of sirtuin-1 was assessed by administration of (+) - catechin with the presence of a specific inhibitor of sirtuin-1, nicotinamide. Metformin 1 mM & 5 mM were used as positive control. Sirtuin-1, PPAR γ & GLUT-4 expressions were determined by RT-PCR. Results: (+)-Catechin & proanthocyanidin fraction of Uncaria gambir Roxb. were found to increase adipocyte differentiation & glucose uptake by increasing activity of sirtuin-1 as well as metformin (P ≤0.05). PPAR γ, GLUT-4 and sirtuin-1 expressions were known to be responsible for this activities. Conclusion: These results indicate that (+)–catechin & proanthocyanidin fraction of Uncaria gambir Roxb. could be utilized as a renewable bioresource to develop potential antidiabetic and antiobesity agents.
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Affiliation(s)
- Silvy Arundita
- Department of Biochemistry, Faculty of Medicine, Andalas University, Limau Manis, Padang, 25163, West Sumatera, Indonesia
| | - Friardi Ismed
- Faculty of Pharmacy, Andalas University, Limau Manis, Padang, 25163, West Sumatera, Indonesia
| | - Rauza Sukma Rita
- Department of Biochemistry, Faculty of Medicine, Andalas University, Limau Manis, Padang, 25163, West Sumatera, Indonesia
| | - Deddi Prima Putra
- Faculty of Pharmacy, Andalas University, Limau Manis, Padang, 25163, West Sumatera, Indonesia
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Shotyk W, Javed MB, Noernberg T. Trace elements in Labrador Tea (Rhododendron groenlandicum): How predominant sources to the plants impact the chemical composition of hot water extracts. ENVIRONMENTAL RESEARCH 2020; 183:109272. [PMID: 32113170 DOI: 10.1016/j.envres.2020.109272] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
Labrador Tea (Rhododendron groenlandicum) has been an important food and medicinal plant to First Nations communities in North America for millenia, but little is known of its geochemical properties. Using plants from 10 sites in 4 provinces, including pristine and industrial regions, and employing the metal-free, ultraclean SWAMP laboratory facilities and procedures, we provide an estimate of the natural abundance of trace elements in the leaves, and the extent of their release during hot water extraction. Elements decrease in abundance in the order Mn > Al > Fe > Zn > Cu > Ni > V > Pb > La > Mo > Y > La > Tl > Cd > Th > Ag. The greatest concentrations of conservative, lithophile elements such as Al, La, Th and Y, are found in samples collected on lands reclaimed from open pit bitumen mines in northern Alberta, reflecting elevated inputs of atmospheric dusts. In contrast, micronutrients such as Cu and Zn are remarkably uniform which suggests that these are supplied almost exclusively by plant uptake via roots. Deionized, reverse osmosis water is more effective in removing some elements (e.g. Al, La, Y, Fe, Zn, Cd) whereas others are more readily extracted using groundwater (e.g. Cu, Ni, Pb); V behaves independently of water composition. In both types of water, the elements most readily extracted are plant micronutrients (Mn, Ni, Cu, and Zn) whereas those supplied primarily by dust exhibit much lower yields; Al shows behaviour intermediate between these two extremes. While element concentrations in the infusions increase with increasing concentrations in the leaves, the abundance of potentially toxic chalcophile elements such as Cd, Pb, Sb and Tl in the infusions are extremely low (ng/l). Plants from British Columbia, Ontario and Quebec provide evidence of atmospheric Pb contamination, yielding greater ratios of Pb/La compared to the samples from Alberta where crustal values are found. Given that this plant is common and found across the northern half of the continent, it shows great promise as a tool for biomonitoring of air quality. For consumers, Labrador Tea may represent an important dietary source of Mn.
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Affiliation(s)
- William Shotyk
- Bocock Chair for Agriculture and the Environment, Department of Renewable Resources, University of Alberta, 348B South Academic Building, Edmonton, T6G 2H1, Alberta, Canada.
| | | | - Tommy Noernberg
- Department of Renewable Resources, University of Alberta, T6G 2H1, Canada.
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9
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Effects of (+)-catechin on the differentiation and lipid metabolism of 3T3-L1 adipocytes. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103558] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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10
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Benabderrahim MA, Sarikurkcu C, Elfalleh W, Ozer MS. Datura innoxia and Dipsacus laciniatus: Biological activity and phenolic composition. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101163] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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McGill CM, Tomco PL, Ondrasik RM, Belknap KC, Dwyer GK, Quinlan DJ, Kircher TA, Andam CP, Brown TJ, Claxton DF, Barth BM. Therapeutic effect of Northern Labrador tea extracts for acute myeloid leukemia. Phytother Res 2018; 32:1636-1641. [PMID: 29701283 PMCID: PMC7992109 DOI: 10.1002/ptr.6091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 03/14/2018] [Accepted: 03/16/2018] [Indexed: 12/20/2022]
Abstract
Acute myeloid leukemia (AML) is an aggressive hematological malignancy that is one of the more common pediatric malignancies in addition to occurring with high incidence in the aging population. Unfortunately, these patient groups are quite sensitive to toxicity from chemotherapy. Northern Labrador tea, or Rhododendron tomentosum Harmaja (a.k.a. Ledum palustre subsp. decumbens) or "tundra tea," is a noteworthy medicinal plant used by indigenous peoples in Alaska, Canada, and Greenland to treat a diversity of ailments. However, laboratory investigations of Northern Labrador tea, and other Labrador tea family members, as botanical sources for anticancer compounds have been limited. Utilizing an AML cell line in both in vitro and in vivo studies, as well as in vitro studies using primary human AML patient samples, this study demonstrated for the first time that Northern Labrador tea extracts can exert anti-AML activity and that this may be attributed to ursolic acid as a constituent component. Therefore, this medicinal herb holds the potential to serve as a source for further drug discovery efforts to isolate novel anti-AML compounds.
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Affiliation(s)
- Colin M. McGill
- Department of Chemistry, University of Alaska Anchorage,
Anchorage, AK 99508 USA
| | - Patrick L. Tomco
- Department of Chemistry, University of Alaska Anchorage,
Anchorage, AK 99508 USA
| | - Regina M. Ondrasik
- Department of Medicine, Division of Hematology and
Oncology, Penn State Hershey Cancer Institute, Penn State College of Medicine,
Hershey, PA 17033 USA
| | - Kaitlyn C. Belknap
- Department of Molecular, Cellular and Biomedical Sciences,
University of New Hampshire, Durham, NH 03824 USA
| | - Gaelen K. Dwyer
- Department of Chemistry, University of Alaska Anchorage,
Anchorage, AK 99508 USA
| | - Daniel J. Quinlan
- Department of Chemistry, University of Alaska Anchorage,
Anchorage, AK 99508 USA
| | - Thomas A. Kircher
- Department of Chemistry, University of Alaska Anchorage,
Anchorage, AK 99508 USA
| | - Cheryl P. Andam
- Department of Molecular, Cellular and Biomedical Sciences,
University of New Hampshire, Durham, NH 03824 USA
| | - Timothy J. Brown
- Department of Medicine, Division of Hematology and
Oncology, Penn State Hershey Cancer Institute, Penn State College of Medicine,
Hershey, PA 17033 USA
| | - David F. Claxton
- Department of Medicine, Division of Hematology and
Oncology, Penn State Hershey Cancer Institute, Penn State College of Medicine,
Hershey, PA 17033 USA
| | - Brian M. Barth
- Department of Medicine, Division of Hematology and
Oncology, Penn State Hershey Cancer Institute, Penn State College of Medicine,
Hershey, PA 17033 USA
- Department of Molecular, Cellular and Biomedical Sciences,
University of New Hampshire, Durham, NH 03824 USA
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Li S, Pasquin S, Eid HM, Gauchat JF, Saleem A, Haddad PS. Anti-apoptotic potential of several antidiabetic medicinal plants of the eastern James Bay Cree pharmacopeia in cultured kidney cells. Altern Ther Health Med 2018; 18:37. [PMID: 29378549 PMCID: PMC5789738 DOI: 10.1186/s12906-018-2104-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 01/18/2018] [Indexed: 12/20/2022]
Abstract
Background Our team has identified 17 Boreal forest species from the traditional pharmacopeia of the Eastern James Bay Cree that presented promising in vitro and in vivo biological activities in the context of type 2 diabetes (T2D). We now screened the 17 plants extracts for potential anti-apoptotic activity in cultured kidney cells and investigated the underlying mechanisms. Methods MDCK (Madin-Darnby Canine Kidney) cell damage was induced by hypertonic medium (700 mOsm/L) in the presence or absence of maximal nontoxic concentrations of each of the 17 plant extracts. After 18 h’ treatment, cells were stained with Annexin V (AnnV) and Propidium iodide (PI) and subjected to flow cytometry to assess the cytoprotective (AnnV−/PI−) and anti-apoptotic (AnnV+/PI−) potential of the 17 plant extracts. We then selected a representative subset of species (most cytoprotective, moderately so or neutral) to measure the activity of caspases 3, 8 and 9. Results Gaultheria hispidula and Abies balsamea are amongst the most powerful cytoprotective and anti-apoptotic plants and appear to exert their modulatory effect primarily by inhibiting caspase 9 in the mitochondrial apoptotic signaling pathway. Conclusion We conclude that several Cree antidiabetic plants exert anti-apoptotic activity that may be relevant in the context of diabetic nephropathy (DN) that affects a significant proportion of Cree diabetics.
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Pang D, You L, Zhou L, Li T, Zheng B, Liu RH. Averrhoa carambolafree phenolic extract ameliorates nonalcoholic hepatic steatosis by modulating mircoRNA-34a, mircoRNA-33 and AMPK pathways in leptin receptor-deficient db/db mice. Food Funct 2017; 8:4496-4507. [DOI: 10.1039/c7fo00833c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Averrhoa carambolafree phenolic extract ameliorates hepatic steatosis by modulating mircoRNA-34a, mircoRNA-33 and AMPK signaling.
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Affiliation(s)
- Daorui Pang
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou
- People's Republic of China
| | - Lijun You
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou
- People's Republic of China
| | - Lin Zhou
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou
- People's Republic of China
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates
| | - Tong Li
- Department of Food Science
- Cornell University
- Ithaca
- USA
| | - Bisheng Zheng
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou
- People's Republic of China
| | - Rui Hai Liu
- Department of Food Science
- Cornell University
- Ithaca
- USA
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14
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Mehenni C, Atmani-Kilani D, Dumarçay S, Perrin D, Gérardin P, Atmani D. Hepatoprotective and antidiabetic effects of Pistacia lentiscus leaf and fruit extracts. J Food Drug Anal 2016; 24:653-669. [PMID: 28911573 PMCID: PMC9336671 DOI: 10.1016/j.jfda.2016.03.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 03/10/2016] [Accepted: 03/15/2016] [Indexed: 11/24/2022] Open
Abstract
Pistacia lentiscus (Anacardiaceae) is commonly used in folk medicine to treat various diseases. The aim of the present study was to evaluate the hepatoprotective and antioxidant activities of extracts of P. lentiscus leaves (PL) and fruits (PF) against experimentally induced liver damage. Furthermore, characterization of extracts was attempted by a spectroscopic methodology (Fourier transform infrared spectroscopy) and high-performance liquid chromatography with diode array detection analysis. A hepatoprotective potential against paracetamol [165 mg/kg body weight (b.w.)] toxicity was noticed in mice pretreated with the same dose of PL or PF extract (125 mg/kg b.w.) or a combination of both (PL/PF 63/63 mg/kg b.w.), as revealed by an analysis of biochemical parameters (alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase activities and total bilirubin). These results were confirmed by histological examination of the liver, which revealed significant protection against paracetamol-induced hepatic necrosis. Furthermore, PF extract exhibited a promising antidiabetic activity in streptozotocin-induced diabetic rats, similar to the reference drug glibenclamide (0.91 g/L), a result confirmed by in vitro inhibition of α-amylase. We demonstrated that the leaf crude extract showed the best effect in all tested methods, compared to its fruit counterpart, probably due to the presence of higher amounts of phenolic compounds, as determined by phytochemical and Fourier transform infrared spectroscopy analyses. Moreover, high-performance liquid chromatography with diode array detection led to the identification of six compounds for each part of the plant. Gallic acid, a characteristic compound of Pistacia species, was most abundant in leaves and fruits, while luteolin was detected for the first time in fruits. Obtained activities of P. lentiscus extracts may well be due, at least in part, to the presence of the above compounds.
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Affiliation(s)
- Chafiaâ Mehenni
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria
| | - Dina Atmani-Kilani
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria
| | - Stéphane Dumarçay
- Laboratoire d'Etudes et de Recherches sur le Matériau Bois - IFR 110, Nancy-Université, Faculté des Sciences et Techniques, Vandoeuvre-lès-Nancy, France
| | - Dominique Perrin
- Laboratoire d'Etudes et de Recherches sur le Matériau Bois - IFR 110, Nancy-Université, Faculté des Sciences et Techniques, Vandoeuvre-lès-Nancy, France
| | - Philippe Gérardin
- Laboratoire d'Etudes et de Recherches sur le Matériau Bois - IFR 110, Nancy-Université, Faculté des Sciences et Techniques, Vandoeuvre-lès-Nancy, France
| | - Djebbar Atmani
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria.
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