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Parra-Naranjo A, Delgado-Montemayor C, Salazar-Aranda R, Waksman-Minsky N. Bioactivity of the Genus Turnera: A Review of the Last 10 Years. Pharmaceuticals (Basel) 2023; 16:1573. [PMID: 38004438 PMCID: PMC10675026 DOI: 10.3390/ph16111573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/19/2023] [Accepted: 10/31/2023] [Indexed: 11/26/2023] Open
Abstract
Turnera is a genus of plants whose biological activity has been widely studied. The importance of this genus, particularly Turnera diffusa, as a source of treatment for various conditions is evidenced by the large number of new studies that have evaluated its biological activity. Accordingly, the objective of this review was to compile the information published in the last ten years concerning the biological activities reported for Turnera spp. The present work includes 92 publications that evaluate 29 bioactivities and toxicological and genotoxic information on five species of this genus. Among the pharmacological effects reported, the antioxidant, hepatoprotective, neuroprotective, hypoglycemic, and aphrodisiac activities seem more promising. Phytochemicals and standardized plant extracts could offer alternative therapeutic remedies for various diseases. Although several flavonoids, cyanogenic glycosides, monoterpenoids, triterpenoids, and fatty acids have been isolated for Turnera plants, future research should focus on the identification of the main active principles responsible for these pharmacological activities, as well as to perform clinical trials to support the laboratory results.
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Affiliation(s)
| | | | | | - Noemí Waksman-Minsky
- Facultad de Medicina, Departamento de Química Analítica, Universidad Autónoma de Nuevo León, Monterrey 64460, Nuevo León, Mexico; (A.P.-N.); (C.D.-M.); (R.S.-A.)
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Dong SQ, Wang XF, Ding Y, Wang L, Yang K, Hu SD, Wang PF, Fu Z, Duan K. Chemical Constituents from Alpinia hainanensis. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03994-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Parra-Naranjo A, Delgado-Montemayor C, Salazar-Aranda R, Castro-Ríos R, Saucedo AL, Waksman-Minsky N. Two Ways to Achieve the Same Goal-Two Validated Quantitative NMR Strategies for a Low-Abundance Natural Product in Standardized Extracts: The Case of Hepatodamianol in Turnera diffusa. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196593. [PMID: 36235131 PMCID: PMC9570796 DOI: 10.3390/molecules27196593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 11/07/2022]
Abstract
The quantification of low-abundance secondary metabolites in plant extracts is an analytical problem that can be addressed by different analytical platforms, the most common being those based on chromatographic methods coupled to a high-sensitivity detection system. However, in recent years nuclear magnetic resonance (NMR) has become an analytical tool of primary choice for this type of problem because of its reliability, inherent simplicity in sample preparation, reduced analysis time, and low solvent consumption. The versatility of strategies based on quantitative NMR (qNMR), such as internal and external standards and electronic references, among others, and the need to develop validated analytical methods make it essential to compare procedures that must rigorously satisfy the analytical well-established acceptance criteria for method validation. In this work, two qNMR methods were developed for the quantification of hepatodamianol, a bioactive component of T. diffusa. The first method was based on a conventional external standard calibration, and the second one was based on the pulse length-based concentration determination (PULCON) method using the ERETIC2 module as a quantitation tool available in TopSpin software. The results show that both procedures allow the content of the analyte of interest in a complex matrix to be determined in a satisfactory way, under strict analytical criteria. In addition, ERETIC2 offers additional advantages such as a reduction in experimental time, reagent consumption, and waste generated.
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Affiliation(s)
- Aída Parra-Naranjo
- Facultad de Medicina, Departamento de Química Analítica, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
| | - Cecilia Delgado-Montemayor
- Facultad de Medicina, Departamento de Química Analítica, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
| | - Ricardo Salazar-Aranda
- Facultad de Medicina, Departamento de Química Analítica, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
| | - Rocío Castro-Ríos
- Facultad de Medicina, Departamento de Química Analítica, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
| | - Alma L. Saucedo
- Facultad de Medicina, Departamento de Química Analítica, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
- Consejo Nacional de Ciencia y Tecnología, Ciudad de México 03940, Mexico
- Correspondence: (A.L.S.); (N.W.-M.)
| | - Noemí Waksman-Minsky
- Facultad de Medicina, Departamento de Química Analítica, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
- Correspondence: (A.L.S.); (N.W.-M.)
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Sanitary Registries and Popular Medicinal Plants Used in Medicines and Herbal Remedies in Mexico (2001–2020): A Review and Potential Perspectives. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Mexico, a megadiverse country, hosts approximately 10–12% of the world’s biodiversity and at least 21,989–23,424 vascular plants, 3350 of which are traditional medicinal flora. The Mexican Regulation categorizes herbal medicinal products into two groups: herbal medicines products and herbal remedies products. To date, there is no available information that describes and includes analyzed data about these two types of herbal medicinal products registered in Mexico. The purpose of the study was to analyze national sanitary registries of herbal products from 2001 to 2020 and identify native Mexican plants that are most used in herbal products. Further, the study aims to highlight the impact and relevance of this large number of medicinal plants, which represent a great source of information, genetic resources, bioactive compounds, and potential use in subsequent therapies based on scientific evidence. The future of medicines and herbal remedies is underestimated; thus, the significance of evaluating the great potential in studying plants for medicinal use must be taken into account.
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Antidiabetic and hypotensive effect of Cnidoscolus aconitifolius (Mill) I.M Johnst leaves extracts. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-01093-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Uuh-Narvaez JJ, Negrete-León E, Acevedo-Fernández JJ, Segura-Campos MR. Antihyperglycemic and hypoglycemic activity of Mayan plant foods in rodent models. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:4193-4200. [PMID: 33420740 DOI: 10.1002/jsfa.11057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/10/2020] [Accepted: 01/08/2022] [Indexed: 06/12/2023]
Abstract
BACKGROUND Postprandial hyperglycemia and decreased insulin secretion are relevant to risk factors in the development of type 2 diabetes and its complications. Plant foods with antidiabetic properties could be an affordable alternative in the prevention and treatment of this disease. In the present study, the antihyperglycemic and hypoglycemic activity of Bixa orellana, Psidium guajava L., Cucurbita moschata, Raphanus sativus L. and Brassica oleracea var. capitata - Mayan plant foods - were evaluated at doses of 5 and 10 mg kg-1 . Antihyperglycemic activity was measured in healthy Wistar rats and those with obesity induced by high-sucrose diet (group HSD) (20%). The hypoglycemic activity was measure in healthy CD1 mice. RESULTS Fasting glucose, Lee index and the body weight of HSD rats increased significantly (P ≤ 0.05) after 12 weeks of induction compared to healthy rats. In healthy rats, P. guajava and Bixa orellana (10 mg kg-1 ) demonstrated higher and statistically different (P ≤ 0.05) antihyperglycemic activity compared to control acarbose (0.5 mg kg-1 ). In the HSD rat group, all Mayan plant foods (10 mg kg-1 ) demonstrated antihyperglycemic activity statistically equal (P ≤ 0.05) to control acarbose. However, Brassica oleracea and R. sativus registered the highest antihyperglycemic activity. Bixa orellana and P. guajava (5 mg kg-1 ) showed similar hypoglycemic activity (P ≤ 0.05) to glibenclamide (0.5 mg kg-1 ) but was not significant (P ≤ 0.05) compared to insulin (5 UI kg-1 ). CONCLUSION The present study provides valuable evidence on the possible health benefits of Mayan plant foods. These foods could contribute to the development of therapeutic diet strategies for the prevention and treatment of diabetes. © 2021 Society of Chemical Industry.
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Jiménez-Estrada M, Huerta-Reyes M, Tavera-Hernández R, Alvarado-Sansininea JJ, Alvarez AB. Contributions from Mexican Flora for the Treatment of Diabetes Mellitus: Molecules of Psacalium decompositum (A. Gray) H. Rob & Brettell. Molecules 2021; 26:2892. [PMID: 34068304 PMCID: PMC8153299 DOI: 10.3390/molecules26102892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/30/2021] [Accepted: 05/08/2021] [Indexed: 02/08/2023] Open
Abstract
Diabetes mellitus (DM) is cited as a serious worldwide health problem that occupies second place in causes of annual mortality in Mexico. Among Mexican flora, nearly 300 plant species have been employed as hypoglycemic in popular use. Thus, their study entertains great relevance In this context, this work contributes a clear and timely review of the plant species utilized in Traditional Mexican Medicine and experimental biological models in which not only have the hypoglycemic properties of the extracts and the isolated compounds been considered, but also the anti-inflammatory and antioxidant properties, taking into account an integral focus based on the complex mechanisms involved in the pathogenesis and physiopathology of DM. Among the species reviewed, we highlight Psacalium decompositum (Asteraceae), due to the potent hypoglycemic, anti-inflammatory, and antioxidant activity of the sesquiterpenes identified as majority compounds isolated from the root, such as cacalol and cacalone that also possess the capacity of increasing insulin levels. In this manner, the present manuscript attempts to contribute necessary information for the future study of bioactive molecules that are useful in the treatment of DM, as well as also being a contribution to the knowledge and diffusion of Mexican Traditional Medicine.
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Affiliation(s)
- Manuel Jiménez-Estrada
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Coyoacán 04510, Mexico; (R.T.-H.); (J.J.A.-S.); (A.B.A.)
| | - Maira Huerta-Reyes
- Unidad de Investigación Médica en Enfermedades Nefrológicas, Hospital de Especialidades “Dr. Bernardo Sepúlveda Gutiérrez”, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Cuauhtémoc 06720, Mexico;
| | - Rosario Tavera-Hernández
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Coyoacán 04510, Mexico; (R.T.-H.); (J.J.A.-S.); (A.B.A.)
| | - J. Javier Alvarado-Sansininea
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Coyoacán 04510, Mexico; (R.T.-H.); (J.J.A.-S.); (A.B.A.)
| | - Ana Berenice Alvarez
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Coyoacán 04510, Mexico; (R.T.-H.); (J.J.A.-S.); (A.B.A.)
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Molecules Isolated from Mexican Hypoglycemic Plants: A Review. Molecules 2020; 25:molecules25184145. [PMID: 32927754 PMCID: PMC7571036 DOI: 10.3390/molecules25184145] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/17/2020] [Accepted: 09/03/2020] [Indexed: 12/15/2022] Open
Abstract
Like in many developing countries, in Mexico, the use of medicinal plants is a common practice. Based on our own field experience, there are at least 800 plants used for treating diabetes nowadays. Thus, their investigation is essential. In this context, this work aims to provide a comprehensive and critical review of the molecules isolated from Mexican hypoglycemic plants, including their source and target tested. In the last few years, some researchers have focused on the study of Mexican hypoglycemic plants. Most works describe the hypoglycemic effect or the mechanism of action of the whole extract, as well as the phytochemical profile of the tested extract. Herein, we analyzed 85 studies encompassing 40 hypoglycemic plants and 86 active compounds belonging to different classes of natural products: 28 flavonoids, 25 aromatic compounds, other than flavonoids, four steroids, 23 terpenoids, 4 oligosaccharides, and 1 polyalcohol. These compounds have shown to inhibit α-glucosidases, increase insulin secretion levels, increase insulin sensitivity, and block hepatic glucose output. Almost half of these molecules are not common metabolites, with a narrow taxonomic distribution, which makes them more interesting as lead molecules. Altogether, this analysis provides a necessary inventory useful for future testing of these active molecules against different hypoglycemic targets, to get a better insight into the already described mechanisms, and overall, to contribute to the knowledge of Mexican medicinal plants.
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Furman BL, Candasamy M, Bhattamisra SK, Veettil SK. Reduction of blood glucose by plant extracts and their use in the treatment of diabetes mellitus; discrepancies in effectiveness between animal and human studies. JOURNAL OF ETHNOPHARMACOLOGY 2020; 247:112264. [PMID: 31600561 DOI: 10.1016/j.jep.2019.112264] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/03/2019] [Accepted: 09/29/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The global problem of diabetes, together with the limited access of large numbers of patients to conventional antidiabetic medicines, continues to drive the search for new agents. Ancient Asian systems such as traditional Chinese medicine, Japanese Kampo medicine, and Indian Ayurvedic medicine, as well as African traditional medicine and many others have identified numerous plants reported anecdotally to treat diabetes; there are probably more than 800 such plants for which there is scientific evidence for their activity, mostly from studies using various models of diabetes in experimental animals. AIM OF THE REVIEW Rather than a comprehensive coverage of the literature, this article aims to identify discrepancies between findings in animal and human studies, and to highlight some of the problems in developing plant extract-based medicines that lower blood glucose in patients with diabetes, as well as to suggest potential ways forward. METHODS In addition to searching the 2018 PubMed literature using the terms 'extract AND blood glucose, a search of the whole literature was conducted using the terms 'plant extracts' AND 'blood glucose' AND 'diabetes' AND 'double blind' with 'clinical trials' as a filter. A third search using PubMed and Medline was undertaken for systematic reviews and meta-analyses investigating the effects of plant extracts on blood glucose/glycosylated haemoglobin in patients with relevant metabolic pathologies. FINDINGS Despite numerous animal studies demonstrating the effects of plant extracts on blood glucose, few randomised, double-blind, placebo-controlled trials have been conducted to confirm efficacy in treating humans with diabetes; there have been only a small number of systematic reviews with meta-analyses of clinical studies. Qualitative and quantitative discrepancies between animal and human clinical studies in some cases were marked; the factors contributing to this included variations in the products among different studies, the doses used, differences between animal models and the human disease, and the impact of concomitant therapy in patients, as well as differences in the duration of treatment, and the fact that treatment in animals may begin before or very soon after the induction of diabetes. CONCLUSION The potential afforded by natural products has not yet been realised in the context of treating diabetes mellitus. A systematic, coordinated, international effort is required to achieve the goal of providing anti-diabetic treatments derived from medicinal plants.
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Affiliation(s)
- Brian L Furman
- Strathclyde Institute of Pharmacy & Biomedical Sciences, 161, Cathedral Street Glasgow, G4 ORE, Scotland, UK.
| | - Mayuren Candasamy
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia.
| | - Subrat Kumar Bhattamisra
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia.
| | - Sajesh K Veettil
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia.
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Ononamadu CJ, Alhassan AJ, Imam AA, Ibrahim A, Ihegboro GO, Owolarafe AT, Sule MS. In vitro and in vivo anti-diabetic and anti-oxidant activities of methanolic leaf extracts of Ocimum canum. CASPIAN JOURNAL OF INTERNAL MEDICINE 2019; 10:162-175. [PMID: 31363395 PMCID: PMC6619470 DOI: 10.22088/cjim.10.2.162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background: Diabetes is a metabolic disorder with a highly complex, multifaceted and intricate etiologies and thus may require management options that proffers multimodal mechanism of action. This present study evaluated the antidiabetic and antioxidant potential of the methanolic extract/fractions of leaves of Ocimum canum. Methods: The antidiabetic potential was evaluated and using STZ-induced diabetic Wistar rat model (in vivo) and inhibition of α-amylase and α-glucosidase activity (in vitro). Antioxidant activity was assessed in vitro by free radical scavenging and reducing power assays and in vivo via monitoring SOD and CAT activities; GSH and MDA levels. Results: The total phenolic content (221.0±3.0 mg catechol/g of sample) and tannins (146.0±4.0 mg tannic acid/g of sample) of the crude extract; and flavonoid of the aqueous-methanol fraction (216.0.0±1.0 mg of rutin/g of sample) were found to be significantly higher relative to others. The crude extract and the aqueous-methanol fraction exhibited a significantly (p<0.05) higher percentage reduction in fasting blood glucose and a concomitant increase in serum insulin level relative to the diabetic control group. The highest radical scavenging activity and reducing power were observed in the aqueous-methanol fraction. The aqueous-methanol solvent fraction also significantly reversed the alterations in oxidative stress markers occasioned by the diabetic condition. Conclusion: In conclusion, the result of the present study has demonstrated evidently that extracts of Ocimum canum leaves ameliorates hyperglycemia and the associated oxidative stress in STZ-induced rats.
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Affiliation(s)
- Chimaobi J Ononamadu
- Department of Biochemistry and Forensic Science, Nigeria Police Academy, Wudil, Kano State, Nigeria.,Department of Biochemistry, Bayero University, Kano State, Nigeria
| | - Adamu J Alhassan
- Department of Biochemistry, Bayero University, Kano State, Nigeria
| | - Abdullahi A Imam
- Department of Biochemistry, Bayero University, Kano State, Nigeria
| | - Aminu Ibrahim
- Department of Biochemistry, Bayero University, Kano State, Nigeria
| | - Godwin O Ihegboro
- Department of Biochemistry and Forensic Science, Nigeria Police Academy, Wudil, Kano State, Nigeria.,Department of Biochemistry, Bayero University, Kano State, Nigeria
| | - Alowonle T Owolarafe
- Department of Biochemistry and Forensic Science, Nigeria Police Academy, Wudil, Kano State, Nigeria.,Department of Biochemistry, Bayero University, Kano State, Nigeria
| | - Mohammed S Sule
- Department of Biochemistry, Bayero University, Kano State, Nigeria
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Plant-Derived Supplements for Sexual Health and Problems, Part 2: Further Evidence for Specific Herbal Effects. CURRENT SEXUAL HEALTH REPORTS 2019. [DOI: 10.1007/s11930-019-00204-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Luz JRDD, Silva do Nascimento TE, Fernandes de Morais LV, Menezes da Cruz AK, Rezende AAD, Neto JB, Ururahy MAG, Luchessi AD, López JA, Rocha HAO, Almeida MDG. Thrombin Inhibition: Preliminary Assessment of the Anticoagulant Potential of Turnera subulata (Passifloraceae). J Med Food 2019; 22:384-392. [PMID: 30900937 DOI: 10.1089/jmf.2018.0141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cardiovascular and thromboembolic disturbances are the main causes of disease-related deaths worldwide. Regardless of the etiological factors involved in thrombus formation, coagulation is mainly activated by thrombin, one of the most important blood clotting molecules. Thus, this study evaluated the Turnera subulata leaf crude extract, its ethyl acetate fraction effect on the coagulation cascade, and its possible side effects. Their phytocomposition indicated polyphenols, mainly flavonol-3-O-glycosylate and a flavone glycoside, without in vitro and in vivo toxicity. Regarding their potential anticoagulants, results displayed partial thromboplastin and prothrombin time activation, and Xa and IIa, and thrombin inhibition by heparin II cofactor, indicating significant anticoagulant activity, suggesting direct and indirect thrombin inhibition as the main mechanism of action. Therefore, T. subulata leaf active compounds exhibit therapeutic potential required to develop phytotherapeutic formulations to assist conventional anticoagulants in clinical treatments.
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Affiliation(s)
- Jefferson Romáryo Duarte da Luz
- 1 Postgraduation Program in Health Sciences, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil.,2 Multidisciplinary Research Laboratory, DACT, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | | | | | | | - Adriana Augusto de Rezende
- 1 Postgraduation Program in Health Sciences, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil.,2 Multidisciplinary Research Laboratory, DACT, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - José Brandão Neto
- 4 Department of Clinical Medicine, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Marcela Abbott Galvão Ururahy
- 2 Multidisciplinary Research Laboratory, DACT, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - André Ducati Luchessi
- 1 Postgraduation Program in Health Sciences, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil.,2 Multidisciplinary Research Laboratory, DACT, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Jorge A López
- 5 Tiradentes University/Institute of Technology and Research, Aracaju, Brazil
| | | | - Maria das Graças Almeida
- 1 Postgraduation Program in Health Sciences, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil.,2 Multidisciplinary Research Laboratory, DACT, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
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Cytotoxic Properties of Damiana ( Turnera diffusa) Extracts and Constituents and A Validated Quantitative UHPLC-DAD Assay. Molecules 2019; 24:molecules24050855. [PMID: 30823394 PMCID: PMC6429218 DOI: 10.3390/molecules24050855] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/21/2019] [Accepted: 02/25/2019] [Indexed: 02/06/2023] Open
Abstract
In our continuing search for new cytotoxic agents, we assayed extracts, fractions, and pure compounds from damiana (Turnera diffusa) against multiple myeloma (NCI-H929, U266, and MM1S) cell lines. After a first liquid-liquid solvent extraction, the ethyl acetate layer of an acetone (70%) crude extract was identified as the most active fraction. Further separation of the active fraction led to the isolation of naringenin (1), three apigenin coumaroyl glucosides 2–4, and five flavone aglycones 5–9. Naringenin (1) and apigenin 7-O-(4″-O-p-E-coumaroyl)-glucoside (4) showed significant cytotoxic effects against the tested myeloma cell lines. Additionally, we established a validated ultra-high performance liquid chromatography diode array detector (UHPLC-DAD) method for the quantification of the isolated components in the herb and in traditional preparations of T. diffusa.
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Doan HV, Riyajan S, Iyara R, Chudapongse N. Antidiabetic activity, glucose uptake stimulation and α-glucosidase inhibitory effect of Chrysophyllum cainito L. stem bark extract. Altern Ther Health Med 2018; 18:267. [PMID: 30285723 PMCID: PMC6167849 DOI: 10.1186/s12906-018-2328-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 09/20/2018] [Indexed: 12/21/2022]
Abstract
Background Chrysophyllum cainito L., a tropical fruit tree, has been used as an alternative medicine for the treatment of diabetic patients in many countries. However, there is very limited scientific rationale for this medical use. The present study aimed to evaluate the antidiabetic activity of the extract from C. cainito stem bark and the possible mechanisms underlying this activity. Methods Phytochemistry and in vitro antioxidant capacity of the extract were studied. Hypoglycemic activity of the extract was examined in normal and alloxan-induced diabetic mice. The effect of C. cainito extract on glucose absorption and glucose uptake were conducted using mouse isolated jejunum and abdominal muscle, respectively. Finally, an in vitro effect of C. cainito extract on α-glucosidase activity was evaluated. Results C. cainito extract possessed a strong antioxidant activity comparable to the ascorbic acid and butylated hydroxytoluene. The extract at 500 mg/kg significantly reduced the area under curve of blood glucose level in oral glucose tolerance test in normal mice. In alloxan-induced diabetic model, similar to glibenclamide, a single dose of the extract significantly decreased fasting blood glucose level from 387.17 ± 29.84 mg/dl to 125.67 ± 62.09 mg/dl after 6 h of administration. From the isolated jejunum experiment, the extract at any doses used did not inhibit glucose absorption. However, the extract at 50 μg/ml significantly increased the amount of glucose uptake by abdominal muscles in the presence of insulin (P < 0.05). Lastly, it was found that the extract produced stronger inhibition of α-glucosidase activity (IC50 = 1.20 ± 0.09 μg/ml) than acarbose (IC50 = 198.17 ± 4.74 μg/ml). Conclusion Direct evidence of antidiabetic activity of C. cainito stem bark with possible modes of action, glucose uptake stimulation and α-glucosidase inhibitory effect, was reported for the first time herein. These data support the potential use of this plant for the treatment of diabetic patients.
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Edgar Romualdo EG, Lilia AM, Rafael SG, Alfredo SM. Antioxidant effects of damiana (Turnera diffusa Willd. ex Schult.) in kidney mitochondria from streptozotocin-diabetic rats. Nat Prod Res 2017; 32:2840-2843. [PMID: 28948849 DOI: 10.1080/14786419.2017.1380009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The antioxidant effects of water-ethanol extract (WEE) from Turnera diffusa (damiana) in kidney mitochondria from experimental streptozotocin-induced diabetes mellitus (STZ-DM) rats was evaluated. STZ-DM rats were orally treated during three and five weeks. After experimental periods, kidney mitochondria were isolated and malondialdehyde (MDA), nitric oxide (NO•) and protein nitrosylation levels were measured. Also, blood glucose (BG) and body weight (BW) were recorded. Damiana significantly reduced the MDA and NO• levels in kidney mitochondria, although no changes in protein nitrosylation were observed and it did not have the potential to reverse the hyperglycaemia. In conclusion, WEE of T. diffusa have antioxidant properties that may prevent damage induced by mitochondrial oxidative stress in kidneys of STZ-DM rats.
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