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Chemical Composition and Antibacterial and Antioxidant Activities of Stem Bark Essential Oil and Extracts of Solanecio gigas. Biochem Res Int 2022; 2022:4900917. [PMID: 35855890 PMCID: PMC9288319 DOI: 10.1155/2022/4900917] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 06/13/2022] [Indexed: 11/21/2022] Open
Abstract
Herbal medication developed from natural resources has to have antibacterial and antioxidant effects. The aim of this research is to look at the chemical makeup of Solanecio gigas (S. gigas) stem bark essential oil (EO), as well as the effectiveness of EO and extracts (chloroform, ethyl acetate, and methanol) against human pathogenic bacteria and their antioxidant activity. The GC-MS analysis identified 23 components, accounting for 98.7% of the total oil containing Methylene chloride (49.2%), sabinene (10.5%), 1-nonene (11.3%), Terpinen-4-ol (6.9%), Camphene (4.3%), γ-terpinene (3.6%), α-phellandrene (2.9%) β-myrcene (2.6%), 1,2,5-Oxadiazol-3-carboxamide, 4,4′-azobis-2,2′-dioxide (2.4%), α-terpinene (1.9%), 1-Octanamine, N-methyl- (1.9%), ρ-cymene (1.6%) as major components. The antibacterial efficacy of the EO and extracts (25, 50, 100, and 200 mg/ml) was demonstrated by the inhibitory zones (8.5 ± 0.47–23.3 ± 0.36 and 7.2 ± 0.25–22.0 ± 0.45 mm), respectively. The MIC values of the extracts and the EO were 120–150 and 240 to <1100 μg/ml, respectively. The EO also demonstrated a significant antibacterial impact. The EO and methanolic extract had free radical scavenging activities with IC50 value, 13.8 ± 0.48 and 4.2 ± 0.04 μg/ml, respectively. In comparison to the other extracts, the methanolic extract had the greatest phenolics (100.2 ± 0.13 μg GAE/mg of dry extract) and flavonoid contents (112.1 ± 0.18 μg CE/mg of dry extract).
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Moreira R, Pereira DM, Valentão P, Andrade PB. Pyrrolizidine Alkaloids: Chemistry, Pharmacology, Toxicology and Food Safety. Int J Mol Sci 2018; 19:E1668. [PMID: 29874826 PMCID: PMC6032134 DOI: 10.3390/ijms19061668] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 05/23/2018] [Accepted: 05/23/2018] [Indexed: 12/25/2022] Open
Abstract
Pyrrolizidine alkaloids (PA) are widely distributed in plants throughout the world, frequently in species relevant for human consumption. Apart from the toxicity that these molecules can cause in humans and livestock, PA are also known for their wide range of pharmacological properties, which can be exploited in drug discovery programs. In this work we review the current body of knowledge regarding the chemistry, toxicology, pharmacology and food safety of PA.
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Affiliation(s)
- Rute Moreira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, nº 228, 4050-313 Porto, Portugal.
| | - David M Pereira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, nº 228, 4050-313 Porto, Portugal.
| | - Patrícia Valentão
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, nº 228, 4050-313 Porto, Portugal.
| | - Paula B Andrade
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, nº 228, 4050-313 Porto, Portugal.
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Seremet OC, Olaru OT, Gutu CM, Nitulescu GM, Ilie M, Negres S, Zbarcea CE, Purdel CN, Spandidos DA, Tsatsakis AM, Coleman MD, Margina DM. Toxicity of plant extracts containing pyrrolizidine alkaloids using alternative invertebrate models. Mol Med Rep 2018; 17:7757-7763. [PMID: 29620235 PMCID: PMC5983973 DOI: 10.3892/mmr.2018.8795] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 03/26/2018] [Indexed: 01/01/2023] Open
Abstract
Pyrrolizidine alkaloids (PAs) are a widespread class of hepatotoxic heterocyclic organic compounds found in approximately 3% of world flora. Some PAs have been shown to have genotoxic and carcinogenic effects. The present study focuses on the toxicity effects of four dry extracts obtained from medicinal plants (Senecio vernalis, Symphytum officinale, Petasites hybridus and Tussilago farfara), on two aquatic organisms, Artemia salina and Daphnia magna, and the correlation with their PAs content. A new GC‑MS method, using a retention time (TR)‑5MS type capillary column was developed. PAs Kovats retention indices, for this type of column were computed for the first time. The lethal dose 50% (LC50) values for the two invertebrate models were correlated (Pearson 's coefficient, >0.9) and the toxicity was PA concentration-dependent, for three of the four extracts. All tested extracts were found to be toxic in both aquatic organism models. The results can be used to develop a GC‑MS validated method for the assay of PAs in medicinal plants with a further potential application in the risk assessment study of PAs toxicity in humans.
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Affiliation(s)
- Oana Cristina Seremet
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - Octavian Tudorel Olaru
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - Claudia Maria Gutu
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - George Mihai Nitulescu
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - Mihaela Ilie
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - Simona Negres
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - Cristina Elena Zbarcea
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - Carmen Nicoleta Purdel
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
| | - Demetrios A. Spandidos
- Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Aristides M. Tsatsakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71409 Heraklion, Crete, Greece
| | - Michael D. Coleman
- School of Life and Health Sciences, Aston University, B4 7ET Birmingham, UK
| | - Denisa Marilena Margina
- Faculty of Pharmacy, University of Medicine and Pharmacy ‘Carol Davila’, 020956 Bucharest, Romania, Greece
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Ochwang'i DO, Kimwele CN, Oduma JA, Gathumbi PK, Mbaria JM, Kiama SG. Medicinal plants used in treatment and management of cancer in Kakamega County, Kenya. JOURNAL OF ETHNOPHARMACOLOGY 2014; 151:1040-1055. [PMID: 24362078 DOI: 10.1016/j.jep.2013.11.051] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 11/22/2013] [Accepted: 11/27/2013] [Indexed: 05/25/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Traditional medicine plays a critical role in treatment of chronic debilitating and life threatening conditions and diseases. Cancer is one such condition whose therapeutic intervention is commonly through inexpensive traditional herbal remedies. Increasingly industrialised societies are developing drugs and chemotherapeutics from these traditional herbal plants. Plant biogeography determines the abundance and availability of medicinal plants which in turn determine their use by local communities. The present study was carried out in Kakamega County of Kenya to identify and document medicinal plants used for treatment and management of cancer states by communities living adjacent to Kakamega Tropical rainforest of Kakamega County, Kenya. MATERIALS AND METHODS An ethnobotanical survey was done using semi-structured questionnaires administered to 32 randomly selected herbalists from Kakamega County. RESULTS AND DISCUSSION Sixty five (65) plants of 59 genera and 32 families were identified as candidates in therapeutic intervention against cancer states. Most commonly cited plant species were Spathodea campanulata P. Beauv. ssp. nilotica (Seem), Microglossa pyrifolia (Lam.) Kuntze, Harungana madagascariensis Lam. ex poir, Prunus africana (Hook. f.) kalkman, Cyphostemma serpens (A. Rich), Catharanthus roseus (L.) G. Don and Aloe volkensii Engl. The following were documented for the first time; Aeschynomene abyssinica (A. Rich.) Vatke, Synsepalum cerasiferum (welw.) T. D penn., Albizia coriaria Welw. ex Oliv., Aloe volkensii Engl. Bridelia micrantha (Hochst.) Baill, Croton macrostachyus Delile, Cyphostemma serpens (A. Rich), Dicliptera laxata C.B. Clarke, Ekebergia capensis Sparrm., Gardenia volkensii K. schum. ssp. volkensii, Glycine wightii (wight & Arn.), Ocimum gratissimum Suave, Olea hotcsh spp. hochstetteri, Pavetta abyssinica Fresen., Phyllanthus fischeri Pax, Psydrax schimperiana (A. Rich), Rhus vulgaris Meikle, Senna didymobotyra (Fresen.) Irwin and Barneby, Solanecio nandensis (S. Moore) C. Jeffrey, Solanum mauritianum Scop, Spathodea campanulata P. Beauv. ssp. nilotica (Seem), Spermacoce princea (K. Schum.) Verdc., Tabernaemontana stapfiana Britten, Tragia brevipes Pax and Zanthoxylum gilletii (De Wild.) P.G.Waterman. The most frequently used plant parts were fresh or dried leaves and stem barks. Administration to patients was almost exclusively oral, with the exceptions being topical application especially for breast cancer and skin sarcomas. CONCLUSIONS This study identified diverse medicinal plants used in therapeutic and management intervention against cancer by communities living adjacent to Kakamega Tropical Rainforest. The primary mode of administration was oral.
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Affiliation(s)
- Dominic O Ochwang'i
- Department of Veterinary Anatomy and Physiology, University of Nairobi, P.O. Box 30197, Nairobi 00100, Kenya.
| | - Charles N Kimwele
- Department of Veterinary Anatomy and Physiology, University of Nairobi, P.O. Box 30197, Nairobi 00100, Kenya.
| | - Jemimah A Oduma
- Department of Veterinary Anatomy and Physiology, University of Nairobi, P.O. Box 30197, Nairobi 00100, Kenya.
| | - Peter K Gathumbi
- Department of Veterinary Pathology, Parasitology and Microbiology, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya.
| | - James M Mbaria
- Department of Public Health, Pharmacology and Toxicology, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya.
| | - Stephen G Kiama
- Wangari Maathai Institute for Peace and Environmental Studies, P.O. Box 30197, Nairobi 00100, Kenya.
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Molyneux R, Gardner D, Colegate S, Edgar J. Pyrrolizidine alkaloid toxicity in livestock: a paradigm for human poisoning? Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 28:293-307. [DOI: 10.1080/19440049.2010.547519] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nibret E, Sporer F, Asres K, Wink M. Antitrypanosomal and cytotoxic activities of pyrrolizidine alkaloid-producing plants of Ethiopia. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.06.0014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
The objective was to determine the in-vitro effect of extracts from 19 Ethiopian plant species and four pure pyrrolizidine alkaloids on bloodstream forms of Trypanosoma brucei brucei and human leukaemia HL-60 cells.
Methods
Crude plant extracts were prepared using methanol and dichloromethane. The alkaloidal extracts from Solanecio angulatus flowers were prepared with and without zinc reduction using the acid-base extraction method. Cell proliferation inhibitory activity of the extracts and compounds was assessed using Alamarblue.
Key findings
The most active extract was the dichloromethane extract of Solanecio angulatus flowers, with an IC50 value of 12.17 μg/ml. The best selectivity index (SI > 41.08) was obtained for the same extract determined with HL-60 cells. The reduced alkaloidal extract prepared from S. angulatus flowers and after acid-base extraction showed more antitrypanosomal activity than unreduced alkaloidal extract with an IC50 value of 14.35 μg/ml and with a selectivity index of 12.23.
The second most active extract was the dichloromethane extract of Crotalaria phillipsiae twigs with an IC50 value of 12.67 μg/ml and a selectivity index of 34.35. Most of the other extracts tested showed moderate antitrypanosomal activities to variable extents. Among the four pure pyrrolizidine alkaloids tested, senecionine showed moderate antitrypanosomal activity with an IC50 value of 41.78 μg/ml.
Conclusions
Solanecio angulatus (flowers) and Crotalaria phillipsiae (twigs) could serve as sources of novel trypanocidal compounds for the treatment of trypanosomiasis.
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Affiliation(s)
- Endalkachew Nibret
- Institut für Pharmazie und Molekulare Biotechnologie, Universität Heidelberg, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
| | - Frank Sporer
- Institut für Pharmazie und Molekulare Biotechnologie, Universität Heidelberg, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
| | - Kaleab Asres
- Department of Pharmacognosy, School of Pharmacy, Addis Ababa University, Ethiopia
| | - Michael Wink
- Institut für Pharmazie und Molekulare Biotechnologie, Universität Heidelberg, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
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