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Marchioni I, Rodolfi M, Najar B, Ruffoni B, Machado J, Pistelli L. Phytonutritional compounds and antioxidant activity of eight new edible flowers. Nat Prod Res 2023:1-7. [PMID: 37749955 DOI: 10.1080/14786419.2023.2261140] [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: 02/03/2023] [Accepted: 09/13/2023] [Indexed: 09/27/2023]
Abstract
In the last years, special attention has been given to the nutritional properties of food, and the edible flowers (EFs) represent an uncommon fresh product to characterise, with the aim to explore new species with peculiar aesthetic and the aromatic features. This work investigated some nutritional properties of eight new EFs, such as Begonia boliviensis A.DC. (pink and white varieties), Dahlia pinnata Cav., Salvia farinacea Benth., S. × jamensis J.Compton, S. 'Purple Queen' Tulbaghia simmleri Beauv. 'Alba', T. violacea Harv. 'Alba', chosen for their different colours and corolla morphologies. Primary and secondary metabolites have been determined. The highest protein content was found in T. violacea 'Alba' and D. pinnata. The Salvia species showed the highest soluble sugar content. The two Tulbaghia species were notable for hexose and ascorbic acid content. D. pinnata showed the highest polyphenols, flavonoids and carotenoid content, with the highest antiradical activity.
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Affiliation(s)
| | | | - Basma Najar
- Faculty of Pharmacy, ULB, Bruxelles, Belgium
| | - Barbara Ruffoni
- Research Center for Vegetable and Ornamental Crops (CREA), Sanremo, Italy
| | - Jean Machado
- Department of Agriculture, Food, Environment, University of Pisa, Pisa, Italy
| | - Laura Pistelli
- Department of Agriculture, Food, Environment, University of Pisa, Pisa, Italy
- Interdepartmental Research Center, Nutraceuticals and Food for Health, University of Pisa, Pisa, Italy
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Wang J, Suzuki H, Nakashima N, Kitajima M, Takayama H, Saito K, Yamazaki M, Yoshimoto N. Identification of a regiospecific S-oxygenase for the production of marasmin in traditional medicinal plant Tulbaghia violacea. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2022; 39:281-289. [PMID: 36349240 PMCID: PMC9592931 DOI: 10.5511/plantbiotechnology.22.0619a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/19/2022] [Indexed: 06/16/2023]
Abstract
Marasmin [S-(methylthiomethyl)-L-cysteine-4-oxide] is a pharmaceutically valuable sulfur-containing compound produced by the traditional medicinal plant, Tulbaghia violacea. Here, we report the identification of an S-oxygenase, TvMAS1, that produces marasmin from its corresponding sulfide, S-(methylthiomethyl)-L-cysteine. The amino acid sequence of TvMAS1 showed high sequence similarity to known flavin-containing S-oxygenating monooxygenases in plants. Recombinant TvMAS1 catalyzed regiospecific S-oxygenation at S4 of S-(methylthiomethyl)-L-cysteine to yield marasmin, with an apparent K m value of 0.55 mM. TvMAS1 mRNA accumulated with S-(methylthiomethyl)-L-cysteine and marasmin in various organs of T. violacea. Our findings suggest that TvMAS1 catalyzes the S-oxygenation reaction during the last step of marasmin biosynthesis in T. violacea.
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Affiliation(s)
- Jichen Wang
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | | | - Nanako Nakashima
- Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Mariko Kitajima
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
- Plant Molecular Science Center, Chiba University, Chiba 260-8675, Japan
| | - Hiromitsu Takayama
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
- Plant Molecular Science Center, Chiba University, Chiba 260-8675, Japan
| | - Kazuki Saito
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
- Plant Molecular Science Center, Chiba University, Chiba 260-8675, Japan
| | - Mami Yamazaki
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
- Plant Molecular Science Center, Chiba University, Chiba 260-8675, Japan
| | - Naoko Yoshimoto
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
- Plant Molecular Science Center, Chiba University, Chiba 260-8675, Japan
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The Phytochemistry and Pharmacology of Tulbaghia, Allium, Crinum and Cyrtanthus: ‘Talented’ Taxa from the Amaryllidaceae. Molecules 2022; 27:molecules27144475. [PMID: 35889346 PMCID: PMC9316996 DOI: 10.3390/molecules27144475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022] Open
Abstract
Amaryllidaceae is a significant source of bioactive phytochemicals with a strong propensity to develop new drugs. The genera Allium, Tulbaghia, Cyrtanthus and Crinum biosynthesize novel alkaloids and other phytochemicals with traditional and pharmacological uses. Amaryllidaceae biomolecules exhibit multiple pharmacological activities such as antioxidant, antimicrobial, and immunomodulatory effects. Traditionally, natural products from Amaryllidaceae are utilized to treat non-communicable and infectious human diseases. Galanthamine, a drug from this family, is clinically relevant in treating the neurocognitive disorder, Alzheimer’s disease, which underscores the importance of the Amaryllidaceae alkaloids. Although Amaryllidaceae provide a plethora of biologically active compounds, there is tardiness in their development into clinically pliable medicines. Other genera, including Cyrtanthus and Tulbaghia, have received little attention as potential sources of promising drug candidates. Given the reciprocal relationship of the increasing burden of human diseases and limited availability of medicinal therapies, more rapid drug discovery and development are desirable. To expedite clinically relevant drug development, we present here evidence on bioactive compounds from the genera Allium, Tulgbaghia, Cyrtanthus and Crinum and describe their traditional and pharmacological applications.
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Nanoarchitectonics of ZnO Nanoparticles Mediated by Extract of Tulbaghia violacea and Their Cytotoxicity Evaluation. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02248-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Kumari A, Baskaran P, Plačková L, Omámiková H, Nisler J, Doležal K, Van Staden J. Plant growth regulator interactions in physiological processes for controlling plant regeneration and in vitro development of Tulbaghia simmleri. JOURNAL OF PLANT PHYSIOLOGY 2018; 223:65-71. [PMID: 29505949 DOI: 10.1016/j.jplph.2018.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 01/09/2018] [Accepted: 01/10/2018] [Indexed: 06/08/2023]
Abstract
The endogenous auxin and cytokinin contents of in vitro regenerated Tulbaghia simmleri maintained on applied plant growth regulators in Murashige and Skoog (MS) medium were investigated using UHPLC-MS analysis. The highest number of shoots (27.6 per leaf) were produced in MS medium supplemented with 2.5 μM thidiazuron. A higher number of these shoots were rooted with 10 μM 6-(2-hydroxy-3-methylbenzylamino) purine (PI-55, cytokinin antagonist). Production of somatic embryos (SEs: 16.4-4.6, globular to cotyledonary stages) improved significantly with liquid MS medium containing 2.5 μM picloram, 2.5 μM phloroglucinol (PG) and 1.5 μM gibberellic acid or 1.5 μM PI-55 and 1.0 μM trans-zeatin. SEs (torpedo and cotyledonary stages) germinated (100%) in plant growth regulator free MS medium. The plantlets were acclimatized and all survived in the greenhouse. Higher levels of endogenous auxin, 2-oxindole-3-acetic acid (oxIAA, 371.52 pmol/g DW) and indole-3-acetylaspartate (IAAsp, 141.56 pmol/g DW) were detected in shoots from PG treatments. The roots of garden-grown mother plants possessed the highest level of indole-3-acetic acid (IAA, 630.54 pmol/g DW) and oxIAA (515.26 pmol/g DW). Cytokinins [CKs: trans-zeatin-O-glucoside (tZOG), cis-zeatin (cZ) and N6-isopentenyladenosine-5'-monophosphate (iPRMP)] levels were relatively high in shoots and roots of plantlets in vitro. However, PI-55 treatments influenced the development of plantlets promoting a higher biosynthesis level of iPRMP (418.06 pmol/g DW in root) and cZRMP (904.61 pmol/g DW in roots and 1427.83 pmol/g DW in shoots). The presented protocols offer organogenesis and somatic organogenesis systems for rapid plant regeneration of T. simmleri. In addition, the importance of exogenous and endogenous hormonal effects on in vitro plant growth and development as well as endogenous hormone metabolism signalling and transport related to the physiological processes of CK metabolism and transport are illustrated for in vitro development of T. simmleri.
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Affiliation(s)
- Aloka Kumari
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal Pietermaritzburg, Scottsville 3209, South Africa
| | - Ponnusamy Baskaran
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal Pietermaritzburg, Scottsville 3209, South Africa
| | - Lenka Plačková
- Department of Chemical Biology and Genetics & Laboratory of Growth Regulators, Institute of Experimental Botany, Palacký University, Olomouc, Holice 78371, Czech Republic
| | - Hana Omámiková
- Department of Chemical Biology and Genetics & Laboratory of Growth Regulators, Institute of Experimental Botany, Palacký University, Olomouc, Holice 78371, Czech Republic
| | - Jaroslav Nisler
- Department of Chemical Biology and Genetics & Laboratory of Growth Regulators, Institute of Experimental Botany, Palacký University, Olomouc, Holice 78371, Czech Republic
| | - Karel Doležal
- Department of Chemical Biology and Genetics & Laboratory of Growth Regulators, Institute of Experimental Botany, Palacký University, Olomouc, Holice 78371, Czech Republic
| | - Johannes Van Staden
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal Pietermaritzburg, Scottsville 3209, South Africa.
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Analysis of the phytochemical contents and antioxidant activities of crude extracts from Tulbaghia species. J TRADIT CHIN MED 2018. [DOI: 10.1016/j.jtcm.2018.04.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Krstin S, Sobeh M, Braun MS, Wink M. Tulbaghia violacea and Allium ursinum Extracts Exhibit Anti-Parasitic and Antimicrobial Activities. Molecules 2018; 23:molecules23020313. [PMID: 29393867 PMCID: PMC6017524 DOI: 10.3390/molecules23020313] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/27/2018] [Accepted: 01/30/2018] [Indexed: 11/16/2022] Open
Abstract
Garlic has played an important role in culinary arts and remedies in the traditional medicine throughout human history. Parasitic infections represent a burden in the society of especially poor countries, causing more than 1 billion infections every year and leading to around one million deaths. In this study, we investigated the mode of anti-parasitic activity of "wild garlics" Tulbaghia violacea and Allium ursinum dichloromethane extracts against parasites Trypanosoma brucei brucei and Leishmania tarentolae with regard to their already known antimicrobial activity. We also evaluated their cytotoxic potential against human cells. Both extracts showed a relevant trypanocidal and leishmanicidal activity, although L. tarentolae was less sensitive. We determined that the probable mode of action of both extracts is the irreversible inhibition of the activity of Trypanosoma brucei trypanothione reductase enzyme. The extracts showed a mild cytotoxic activity against human keratinocytes. They also exhibited weak-in most cases comparable-antibacterial and antifungal activity. HPLC-MS/MS analysis showed that both extracts are abundant in sulfur compounds. Thus, for the first time, the ability of Allium ursinum and Tulbaghia violacea to kill Trypanosoma sp. and Leishmania sp. parasites, probably by binding to and inactivating sulfur-containing compounds essential for the survival of the parasite, is shown.
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Affiliation(s)
- Sonja Krstin
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany.
| | - Mansour Sobeh
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany.
| | - Markus Santhosh Braun
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany.
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany.
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Styger G, Aboyade OM, Gibson D, Hughes G. Tulbaghia--A Southern African Phytomedicine. J Altern Complement Med 2016; 22:255-61. [PMID: 27008423 DOI: 10.1089/acm.2014.0406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The phytomedicine Tulbaghia consists of the fresh or dried subterranean organs of various Tulbaghia species. The genus is endemic to Southern Africa and includes about 20 species, of which only T. alliacea and T. capensis are naturally found in the winter rainfall climate area (the Western Cape). The genus forms part of the Alliaceae family and is a geophyte (plants with an underground perennation organ and leaves that die back annually). Their habitat can range from semi-desert to wet and boggy terrain. Wild garlic is most commonly prepared as an infusion or boiled in water and taken orally. Externally, as a medicated bath, wild garlic is used to treat paralysis and rheumatism and to reduce the temperature in a feverish patient. Internally, rhizome or bulb preparations are taken orally to treat fever; as a remedy for colds and influenza, asthma, tuberculosis, and stomach problems; as an antihypertensive; or to expel intestinal worms. It is also used as a prophylactic against winter infections. Rhizome pieces are often placed in castor oil to make eardrops. For fever and high blood pressure, a tea is made from the bulbs or rhizomes and a small cup taken three times daily. The leaves of the plant are used to treat esophageal cancer and may also be eaten as a vegetable. The demand for Tulbaghia in both formal and informal markets has grown exponentially. Sustainable harvesting focuses on only harvesting enough of the plant so that it still has the capacity for self-renewal. However, because both the above-ground and underground parts of Tulbaghia are commonly used in African traditional medicine, destructive harvesting of the whole plant is inevitable, thus necessitating the large-scale organized propagation of these plants. It is therefore important to establish a new strategy for the sustainable harvesting of these plants as commercial crops.
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Affiliation(s)
- Gustav Styger
- 1 South African Herbal Science and Medicine Institute, University of the Western Cape , Cape Town, Republic of South Africa
| | - Oluwaseyi M Aboyade
- 1 South African Herbal Science and Medicine Institute, University of the Western Cape , Cape Town, Republic of South Africa
| | - Diana Gibson
- 2 Department of Anthropology and Sociology, University of the Western Cape , Cape Town, Republic of South Africa
| | - Gail Hughes
- 1 South African Herbal Science and Medicine Institute, University of the Western Cape , Cape Town, Republic of South Africa
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Kumar V, Van Staden J. A Review of Swertia chirayita (Gentianaceae) as a Traditional Medicinal Plant. Front Pharmacol 2016; 6:308. [PMID: 26793105 PMCID: PMC4709473 DOI: 10.3389/fphar.2015.00308] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 12/14/2015] [Indexed: 12/17/2022] Open
Abstract
Swertia chirayita (Gentianaceae), a popular medicinal herb indigenous to the temperate Himalayas is used in traditional medicine to treat numerous ailments such as liver disorders, malaria, and diabetes and are reported to have a wide spectrum of pharmacological properties. Its medicinal usage is well-documented in Indian pharmaceutical codex, the British, and the American pharmacopeias and in different traditional medicine such as the Ayurveda, Unani, Siddha, and other conventional medical systems. This ethnomedicinal herb is known mostly for its bitter taste caused by the presence of different bioactive compounds that are directly associated with human health welfare. The increasing high usage of Swertia chirayita, mostly the underground tissues, as well as the illegal overharvesting combined with habitat destruction resulted in a drastic reduction of its populations and has brought this plant to the verge of extinction. The increasing national and international demand for Swertia chirayita has led to unscrupulous collection from the wild and adulteration of supplies. The aim of this review is to provide a synthesis of the current state of scientific knowledge on the medicinal uses, phytochemistry, pharmacological activities, safety evaluation as well as the potential role of plant biotechnology in the conservation of Swertia chirayita and to highlight its future prospects. Pharmacological data reported in literature suggest that Swertia chirayita shows a beneficial effect in the treatment of several ailments. However, there is lack of adequate information on the safety evaluation of the plant. The pharmacological usefulness of Swertia chirayita requires the need for conservation-friendly approaches in its utilization. Providing high-quality genetically uniform clones for sustainable use and thereby saving the genetic diversity of this species in nature is important. In this regard, plant biotechnological applications such as micropropagation, synthetic seed production, and hairy root technology can play a significant role in a holistic conservation strategy. In addition to micropropagation, storage of these valuable genetic resources is equally important for germplasm preservation. However, more advanced research is warranted to determine the activities of bioactive compounds in vitro and in vivo, establish their underlying mechanisms of action and commence the process of clinical research.
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Affiliation(s)
- Vijay Kumar
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal Pietermaritzburg, South Africa
| | - Johannes Van Staden
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal Pietermaritzburg, South Africa
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Moodley K, Joseph K, Naidoo Y, Islam S, Mackraj I. Antioxidant, antidiabetic and hypolipidemic effects of Tulbaghia violacea Harv. (wild garlic) rhizome methanolic extract in a diabetic rat model. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:408. [PMID: 26577219 PMCID: PMC4647322 DOI: 10.1186/s12906-015-0932-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 11/03/2015] [Indexed: 01/04/2023]
Abstract
Background The prevalence of diabetes mellitus (DM) continues to rise alarmingly despite years of intensive research. The need to explore alternative remedies such as traditional phytotherapy has therefore become increasingly important in the management and treatment of DM. Methods Diabetes was induced by a single intraperitoneal (i.p) injection of streptozotocin (40 mg/kg.b.w) in male Wistar rats. The rats were divided into 5 groups as follows: non-diabetic control fed distilled water, diabetic control fed distilled water, diabetic group treated with Tulbaghia violacea (TVL) (60 mg/kg.b.w), diabetic group treated with TVL (120 mg/kg.b.w), and diabetic group treated with glibenclamide (10 mg/kg.b.w). Food and water intake, as well as urine output were measured daily, whilst body weight and fasting blood glucose were monitored weekly. On day 42, an oral glucose tolerance test was performed on all groups. After 7 weeks, the animals were sacrificed by halothane overdose, blood was removed by cardiac puncture and tissues were harvested. Assays were performed for the determination of plasma insulin, liver glycogen content, lipid peroxidation, antioxidant enzyme levels, plasma nitric oxide levels and serum lipid and liver enzyme levels. Results and Discussion TVL treatment improved body weights, significantly reduced fasting blood glucose levels, improved glucose tolerance and significantly increased plasma insulin and liver glycogen content. TVL treatment also reduced liver thiobarbituric acid reactive substances (TBARS) levels, increased liver superoxide dismutase (SOD), catalase and glutathione peroxidase (GPx) and increased plasma nitric oxide (NO) levels. Furthermore, TVL administration reduced serum triglycerides, VLDL, total-cholesterol levels and increased HDL-cholesterol levels. TVL also reduced serum levels of liver enzymes, alanine aminotransferase (ALT) and aspartate aminotransferase (AST). Conclusion Data obtained in this study demonstrated the hypoglycemic, antioxidant, hepatoprotective and hypolipidemic effects of TVL in STZ-induced diabetic rats.
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Aremu AO, Plačková L, Gruz J, Bíba O, Šubrtová M, Novák O, Doležal K, Van Staden J. Accumulation pattern of endogenous cytokinins and phenolics in different organs of 1-year-old cytokinin pre-incubated plants: implications for conservation. PLANT BIOLOGY (STUTTGART, GERMANY) 2015; 17:1146-55. [PMID: 26177040 DOI: 10.1111/plb.12367] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 07/03/2015] [Indexed: 05/16/2023]
Abstract
A better understanding of phytohormone physiology can provide an essential basis to coherently achieve a conservation drive/strategy for valuable plant species. We evaluated the distribution pattern of cytokinins (CKs) and phenolic compounds in different organs of 1-year-old greenhouse-grown Tulbaghia simmleri pre-treated (during micropropagation) with three aromatic CKs (benzyladenine = BA, meta-topolin = mT, meta-topolin riboside = mTR). The test species is highly valuable due to its medicinal and ornamental uses. Based on UHPLC-MS/MS quantification, mT and mTR pre-treated plants had the highest total CK, mostly resulting from the isoprenoid CK-type, which occurred at highest concentrations in the roots. Although occurring in much lower concentrations when compared to isoprenoid CKs, aromatic CKs were several-fold more abundant in the root of mT pre-treated plants than with other treatments. Possibly related to the enhanced aromatic CKs, free bases and ribonucleotides, plants pre-treated with mT generally displayed better morphology than the other treatments. A total of 12 bioactive phenolic compounds, including four hydroxybenzoic acids, five hydroxycinnamic acids and three flavonoids at varying concentrations, were quantified in T. simmleri. The occurrence, distribution and levels of these phenolic compounds were strongly influenced by the CK pre-treatments, thereby confirming the importance of CKs in phenolic biosynthesis pathways.
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Affiliation(s)
- A O Aremu
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, Scottsville, South Africa
| | - L Plačková
- Laboratory of Growth Regulators & Department of Chemical Biology and Genetics, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Olomouc, Czech Republic
| | - J Gruz
- Laboratory of Growth Regulators & Department of Chemical Biology and Genetics, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Olomouc, Czech Republic
| | - O Bíba
- Laboratory of Growth Regulators & Department of Chemical Biology and Genetics, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Olomouc, Czech Republic
| | - M Šubrtová
- Laboratory of Growth Regulators & Department of Chemical Biology and Genetics, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Olomouc, Czech Republic
| | - O Novák
- Laboratory of Growth Regulators & Department of Chemical Biology and Genetics, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Olomouc, Czech Republic
| | - K Doležal
- Laboratory of Growth Regulators & Department of Chemical Biology and Genetics, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Olomouc, Czech Republic
| | - J Van Staden
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, Scottsville, South Africa
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Saibu GM, Katerere DR, Rees DJG, Meyer M. In vitro cytotoxic and pro-apoptotic effects of water extracts of Tulbaghia violacea leaves and bulbs. JOURNAL OF ETHNOPHARMACOLOGY 2015; 164:203-209. [PMID: 25683299 DOI: 10.1016/j.jep.2015.01.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 01/25/2015] [Accepted: 01/28/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Infusions of Tulbaghia violacea (wild garlic) in water are used in traditional medicine in Southern Africa to treat numerous diseases, including cancer. Several studies have previously demonstrated the cytotoxic activities of extracts of T. violacea in cultured cancer cells. Their findings support the potential anti-cancer properties of this plant. However, these studies made use of organic solvent extraction methods, while the traditional use of the plant involves the preparation of infusions in water. MATERIALS AND METHODS In the current study, we investigated the potential anti-cancer properties of infusions of T. violacea. We also performed a comparative study investigating the cytotoxic activities of T. violacea bulbs and leaves. A panel of four cancer cell lines (HepG2, MCF7, H157, and HT29) and one non-cancerous cell line (KMST6) was treated with the two extracts and the effects of the extracts on the growth of the cells were evaluated. We also investigated whether the growth inhibitory effects were associated with the induction of apoptosis and whether the mechanism of cell death is the result of oxidative stress and the activation of caspase-3. RESULT We found that extracts of the leaves and not the bulbs have growth inhibitory effects and that this is the result of the induction of apoptosis, which is associated with the production of Reactive Oxygen Species (ROS) and the activation of caspase-3. The leaf extract demonstrated variable selective toxicity towards the cancer lines. Although the extract also induced cell death in the non-cancerous cell line (KMST6), we found that the levels of toxicity were lower in this cell line. CONCLUSION this study confirms that infusions of T. violacea have potential anti-cancer activity and that this bioactivity is contained in the leaf extract. This study lends support to claims that this plant can be used to treat cancer.
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Affiliation(s)
- G M Saibu
- Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville 7535, Cape Town, South Africa
| | - D R Katerere
- Tshwane University of Technology, Faculty of Science, Department of Pharmaceutical Science, Building 4, Arcadia Campus, Pretoria 001, South Africa
| | - D J G Rees
- Agricultural Research Council, Private Bag X05, Onderstepoort, Pretoria 0110, South Africa
| | - M Meyer
- Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville 7535, Cape Town, South Africa.
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Moodley K, Naidoo Y, Mackraj I. Effects of Tulbaghia violacea Harv. (Alliaceae) rhizome methanolic extract on kidney function and morphology in Dahl salt-sensitive rats. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:1194-1203. [PMID: 25017374 DOI: 10.1016/j.jep.2014.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 06/12/2014] [Accepted: 07/01/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tulbaghia violacea has been used traditionally for the treatment of several ailments, including hypertension. The herb has been shown to have antihypertensive properties which have been attributed to its angiotensin-converting enzymeinhibitory (ACEI) activity. It could, therefore, prove beneficial in ameliorating renal pathology associated with hypertension. To evaluate the effects of long-term administration of Tulbaghia violacea on renal function and morphology in the Dahl salt-sensitive (DSS) rat model. MATERIALS AND METHODS Male DSS rats were treated intra-peritoneally (i.p.) as follows: methanolic extract of Tulbaghia violacea: (TVL) (50 mg/kg/b.w.), captopril: (CAP) (25 mg/kg/b.w.), or distilled water, control: (CON) (3 ml/kg/b.w.). Blood pressure (BP) was measured bi-weekly, whilst 24-h urine volumes and electrolyte concentrations were assessed weekly. Animals were sacrificed on day 49 by halothane overdose. Blood was removed for determination of plasma and serum electrolytes. Left kidney tissues were harvested for the determination of nuclear factor-kappaβ (NF-kβ) and transforming growth factor-β (TGF-β) gene expressions. RESULTS TVL significantly reduced mean arterial pressure (MAP) and diastolic blood pressure (DBP). TVL showed reduced blood urea nitrogen, serum creatinine, total protein in urine as well as increased serum total protein. TVL decreased thiobarbituric acid reactive substances (TBARS) and increased glutathione peroxidase (GPx) and superoxide dismutase (SOD) activity and nitric oxide significantly. NF-kβ and TGF-β) gene expressions were significantly reduced in TVL and CAP treated rats. Moreover, renal morphology improved significantly in TVL and CAP treated animals. CONCLUSION TVL and CAP demonstrated marked improvement in renal function and morphology.
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Affiliation(s)
- Kogi Moodley
- Department of Human Physiology, School of Basic Medical Sciences, Faculty of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Yougasphree Naidoo
- Department of Biology, School of Biological and Conservation Sciences, Faculty of Science and Agriculture, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Irene Mackraj
- Department of Human Physiology, School of Basic Medical Sciences, Faculty of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
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Moyo M, Van Staden J. Medicinal properties and conservation of Pelargonium sidoides DC. JOURNAL OF ETHNOPHARMACOLOGY 2014; 152:243-55. [PMID: 24463034 PMCID: PMC7127097 DOI: 10.1016/j.jep.2014.01.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/10/2014] [Accepted: 01/12/2014] [Indexed: 05/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pelargonium sidoides DC. (Geraniaceae), a popular medicinal plant used in traditional medicine in the treatment of gastrointestinal ailments has been transformed into a phytopharmaceutical (EPs(®) 7360) for treating respiratory tract infections. The increasing international demand for Pelargonium sidoides has led to localised overexploitation of its wild populations in southern Africa. The aim of the review is to provide a synthesis of the current state of scientific knowledge on the phytochemical, pharmacological and toxicological properties of Pelargonium sidoides as well as the potential role of plant biotechnology in its conservation. The review highlights knowledge gaps in these research areas. MATERIALS AND METHODS A comprehensive literature search involving mainly electronic and library sources of information were used to collate and synthesise published data. RESULTS Experimental results from in vitro studies indicate that bioactive phytochemical constituents of Pelargonium sidoides may not possess a direct antimicrobial effect, but instead act by interfering with microbial binding to host cell receptors, inhibition of key enzymes and the production of antimicrobial effector molecules such as nitric oxide and interferons (IFNs) by the host cells. Furthermore, clinical evaluations in randomised, double-blind, placebo-controlled trials have demonstrated the beneficial effect of Pelargonium sidoides in the treatment of respiratory tract infections with few side effects. However, there is lack of adequate information on the safety evaluation of the plant. On the other hand, the increasing demand for Pelargonium sidoides has led to localised illegal harvesting of wild plants. CONCLUSIONS Pharmacological data reported in literature suggest that Pelargonium sidoides shows a beneficial effect in the treatment of respiratory tract infections. However, more studies are required to elucidate the mode of action of the active constituents exhibited in the treatment of respiratory tract infections and other health conditions caused by microbial attack. Furthermore, the pharmacological usefulness of Pelargonium sidoides must take cognisance of the broader context involving the need for conservation-friendly approaches in its utilisation. In this regard, plant biotechnology applications can play a meaningful role in a holistic conservation strategy.
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Affiliation(s)
- Mack Moyo
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa
| | - Johannes Van Staden
- Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa.
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