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Wang LH, Tan DH, Zhong XS, Jia MQ, Ke X, Zhang YM, Cui T, Shi L. Review on toxicology and activity of tomato glycoalkaloids in immature tomatoes. Food Chem 2024; 447:138937. [PMID: 38492295 DOI: 10.1016/j.foodchem.2024.138937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 02/28/2024] [Accepted: 03/02/2024] [Indexed: 03/18/2024]
Abstract
Owing to the lack of selection and limited intelligence in mechanical picking, some immature tomatoes that contain alkaloids are thrown away. Tomatine alkaloids are steroidal alkaloids naturally present in Solanaceae plants, which are distributed in small amounts in immature tomato fruits and decrease as the fruits ripen. Tomato glycoalkaloids are harmful to human health. However, in small quantities, there is some evidence that these compounds might be beneficial, as other non-antioxidant bioactivities. This article considers recent research on the biological effects of tomato glycoalkaloids in immature tomatoes, providing reference value for the potential development of these compounds.
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Affiliation(s)
- Li-Hao Wang
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - De-Hong Tan
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Xue-Song Zhong
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Mei-Qi Jia
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Xue Ke
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Yu-Mei Zhang
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Tong Cui
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Lin Shi
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China.
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Piccolo V, Pastore A, Maisto M, Keivani N, Tenore GC, Stornaiuolo M, Summa V. Agri-Food Waste Recycling for Healthy Remedies: Biomedical Potential of Nutraceuticals from Unripe Tomatoes ( Solanum lycopersicum L.). Foods 2024; 13:331. [PMID: 38275698 PMCID: PMC10815480 DOI: 10.3390/foods13020331] [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: 01/05/2024] [Revised: 01/17/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024] Open
Abstract
Unripe tomatoes represent an agri-food waste resulting from industrial by-processing products of tomatoes, yielding products with a high content of bioactive compounds with potential nutraceutical properties. The food-matrix biological properties are attributed to the high steroidal glycoalkaloid (SGA) content. Among them, α-tomatine is the main SGA reported in unripe green tomatoes. This review provides an overview of the main chemical and pharmacological features of α-tomatine and green tomato extracts. The extraction processes and methods employed in SGA identification and the quantification are discussed. Special attention was given to the methods used in α-tomatine qualitative and quantitative analyses, including the extraction procedures and the clean-up methods applied in the analysis of Solanum lycopersicum L. extracts. Finally, the health-beneficial properties and the pharmacokinetics and toxicological aspects of SGAs and α-tomatine-containing extracts are considered in depth. In particular, the relevant results of the main in vivo and in vitro studies reporting the therapeutic properties and the mechanisms of action were described in detail.
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Affiliation(s)
| | | | | | | | | | | | - Vincenzo Summa
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano, 49, 80131 Naples, Italy; (V.P.); (A.P.); (M.M.); (N.K.); (G.C.T.); (M.S.)
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3
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Winkiel MJ, Chowański S, Gołębiowski M, Bufo SA, Słocińska M. Solanaceae Glycoalkaloids Disturb Lipid Metabolism in the Tenebrio molitor Beetle. Metabolites 2023; 13:1179. [PMID: 38132861 PMCID: PMC10744845 DOI: 10.3390/metabo13121179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Glycoalkaloids (GAs) are produced naturally by plants and affect insect survivability and fertility. These compounds can be considered potential bioinsecticides; however, the mechanisms and effects of their action remain undiscovered. As lipids are essential molecules for the proper functioning of an insect organism, this research aimed to determine the effects of GAs on the lipid metabolism of the Tenebrio molitor beetle. Solanine, chaconine, tomatine, and tomato leaf extract were applied to larvae by injection at two concentrations, 10-8 and 10-5 M. Then, the tissue was isolated after 2 and 24 h to determine the levels of free fatty acids, sterols and esters using the GC-MS technique. Moreover, the triacylglyceride level and the activity of the key β-oxidation enzyme, 3-hydroxyacyl-CoA dehydrogenase (HADH), were measured. The results indicate that GAs affect the content and composition of lipid compounds in the beetles' haemolymph and fat body. The effects depend on the GA concentrations, incubation time, and kind of tissue. Moreover, the tested compounds decrease HADH activity, especially in the fat body, which may affect energy production. To our knowledge, this is the first study concerning lipid metabolism in T. molitor after GA application. Our results provide some insights into that topic.
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Affiliation(s)
- Magdalena Joanna Winkiel
- Department of Animal Physiology and Developmental Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (S.C.); (M.S.)
| | - Szymon Chowański
- Department of Animal Physiology and Developmental Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (S.C.); (M.S.)
| | - Marek Gołębiowski
- Laboratory of Analysis of Natural Compounds, Department of Environmental Analytics, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland;
| | - Sabino Aurelio Bufo
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy;
- Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, Auckland Park Kingsway Campus, Johannesburg 2092, South Africa
| | - Małgorzata Słocińska
- Department of Animal Physiology and Developmental Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (S.C.); (M.S.)
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4
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Patel AH, Sharma HP. Physiological functions, pharmacological aspects and nutritional importance of green tomato- a future food. Crit Rev Food Sci Nutr 2023:1-29. [PMID: 37267154 DOI: 10.1080/10408398.2023.2212766] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Green tomatoes contain significant levels of steroidal glycoalkoids (SGA) such as α-tomatine and green pigment chlorophyll. Tomatine is an admixture of two glycoalkoids; alpha tomatine and dehydrotomatine reported various health beneficial biological activities. Moreover, a hydrolyzed product of tomatine also contributes to age-related atrophy, and muscle weakness and helps the elderly recover from illness and injuries related to age. However, there is a lack of evidence regarding the absorption of tomatine in the human body concerning proposed biological activity, which should be an area of interest in the future. Once, the absorption study is established compounds concentrated in green tomatoes are potentially involved as protective compounds for several diseases and also used for functional food. To facilitate the use of green tomatoes in food processing, this comprehensive review provides data on the nutritional value of green tomatoes, with emphasis on the evolution of the physiological chemistry, analytical, medicinal, and pharmacological effects of the α-tomatine and chlorophyll in an experimental model. The broad aim of this review is to evaluate the health benefits of green tomatoes in addition to their nutritional value and to study the several features of the role of α-tomatine and chlorophyll in human health.
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Affiliation(s)
- Arpit H Patel
- College of Food Processing Technology and Bio-energy, Anand Agricultural University, Anand, India
| | - Harsh P Sharma
- Food Science and Technology, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India
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Nepal B, Stine KJ. Atomic force microscopy study of the complexation of sterols and the glycoalkaloid α-tomatine in Langmuir-Blodgett monolayers. Chem Phys Lipids 2023; 252:105293. [PMID: 36931584 DOI: 10.1016/j.chemphyslip.2023.105293] [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: 12/03/2022] [Revised: 03/04/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
Glycoalkaloids are secondary metabolites produced by plants that aid in their protection from pathogens and pests. They are known to form 1:1 complexes with 3β-hydroxysterols such as cholesterol causing membrane disruption. So far, the visual evidence showcasing the complexes formed between glycoalkaloids and sterols in monolayers has been mainly restricted to some earlier studies using Brewster angle microscopy which were of low resolution showing the formation of floating aggregates of these complexes. This study is aimed at using atomic force microscopy (AFM) for topographic and morphological analysis of the aggregates of these sterol-glycoalkaloid complexes. Langmuir-Blodgett (LB) transfer of mixed monolayers of the glycoalkaloid α-tomatine, sterols, and lipids in varying molar ratios onto mica followed by AFM examination was performed. The AFM method allowed visualization of the aggregation of sterol-glycoalkaloid complexes at nanometer resolution. While aggregation was observed in mixed monolayers of α-tomatine with cholesterol and in mixed monolayers with coprostanol, no sign of complexation was observed for the mixed monolayers of epicholesterol and α-tomatine, confirming their lack of interaction found in prior monolayer studies. Aggregates were observed in transferred monolayers of ternary mixtures of α-tomatine with cholesterol and the phospholipids 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) or egg sphingomyelin (egg SM). The formation of aggregates was found to be less prevalent for mixed monolayers of DMPC and cholesterol containing α-tomatine than it was for mixed monolayers containing egg SM and cholesterol with α-tomatine. The observed aggregates were generally elongated structures, of a width ranging from about 40-70 nm.
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Affiliation(s)
- Bishal Nepal
- Department of Chemistry and Biochemistry, University of Missouri-Saint Louis, Saint Louis, MO 63121, USA
| | - Keith J Stine
- Department of Chemistry and Biochemistry, University of Missouri-Saint Louis, Saint Louis, MO 63121, USA.
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Peletta A, Lemoine C, Courant T, Collin N, Borchard G. Meeting vaccine formulation challenges in an emergency setting: Towards the development of accessible vaccines. Pharmacol Res 2023; 189:106699. [PMID: 36796463 DOI: 10.1016/j.phrs.2023.106699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/16/2023]
Abstract
Vaccination is considered one of the most successful strategies to prevent infectious diseases. In the event of a pandemic or epidemic, the rapid development and distribution of the vaccine to the population is essential to reduce mortality, morbidity and transmission. As seen during the COVID-19 pandemic, the production and distribution of vaccines has been challenging, in particular for resource-constrained settings, essentially slowing down the process of achieving global coverage. Pricing, storage, transportation and delivery requirements of several vaccines developed in high-income countries resulted in limited access for low-and-middle income countries (LMICs). The capacity to manufacture vaccines locally would greatly improve global vaccine access. In particular, for the development of classical subunit vaccines, the access to vaccine adjuvants is a pre-requisite for more equitable access to vaccines. Vaccine adjuvants are agents required to augment or potentiate, and possibly target the specific immune response to such type of vaccine antigens. Openly accessible or locally produced vaccine adjuvants may allow for faster immunization of the global population. For local research and development of adjuvanted vaccines to expand, knowledge on vaccine formulation is of paramount importance. In this review, we aim to discuss the optimal characteristics of a vaccine developed in an emergency setting by focusing on the importance of vaccine formulation, appropriate use of adjuvants and how this may help overcome barriers for vaccine development and production in LMICs, achieve improved vaccine regimens, delivery and storage requirements.
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Affiliation(s)
- Allegra Peletta
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), University of Geneva, Rue Michel-Servet 1, 1221 Geneva, Switzerland.
| | - Céline Lemoine
- Vaccine Formulation Institute, Rue du Champ-Blanchod 4, 1228 Plan-les-Ouates, Switzerland.
| | - Thomas Courant
- Vaccine Formulation Institute, Rue du Champ-Blanchod 4, 1228 Plan-les-Ouates, Switzerland.
| | - Nicolas Collin
- Vaccine Formulation Institute, Rue du Champ-Blanchod 4, 1228 Plan-les-Ouates, Switzerland.
| | - Gerrit Borchard
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), University of Geneva, Rue Michel-Servet 1, 1221 Geneva, Switzerland.
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Optimization of Ultrasound-Assisted Extraction of Chlorogenic Acid from Potato Sprout Waste and Enhancement of the In Vitro Total Antioxidant Capacity. Antioxidants (Basel) 2023; 12:antiox12020348. [PMID: 36829906 PMCID: PMC9952679 DOI: 10.3390/antiox12020348] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/11/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Potato sprouts, an underutilized by-product of potato processing, could be exploited for the recovery of caffeoyl-quinic acids (CQAs), a family of polyphenols with well-recognized biological activities. In this work, the predominant compound of this class, 5-CQA, was extracted by Ultrasound-Assisted Extraction (UAE) under conditions optimized by an Experimental Design. The investigated variables solid/solvent ratio (1:10-1:50 g/mL), water content in ethanol (30-100% v/v) and UAE time (5-20 min) highlighted a critical influence of the last two factors on the extraction efficiency: extracts richer in 5-CQA were obtained with lower water content (30%) and time (5 min). The addition of ascorbic acid (1.7 mM) as anti-browning agent to the extraction solvent improved the extraction efficiency of 5-CQA compared to acetic and citric acids (3158.71 μg/mL, 1766.71 μg/mL, 1468.20 μg/mL, respectively). A parallel trend for the three acids and an increase in 5-CQA recovery was obtained with the use of freeze-dried sprouts (4980.05 μg/mL, 4795.62, 4211.25 μg/mL, respectively). Total antioxidant capacity (TAC) in vitro demonstrated UAE being a more valuable technique than conventional maceration. Furthermore, three-times-higher values of TPC (7.89 mg GAE/g) and TAC (FRAP: 24.01 mg TE/g; DPPH: 26.20 mg TE/g; ABTS 26.72 mg TE/g) were measured for the optimized extract compared to the initial one. An HPLC-DAD method was applied to monitor 5-CQA recovery, while an LC-HRMS/MS investigation allowed us to perform analyte identity confirmation along with detection of the glycoalkaloids α-solanine and α-chaconine. This evidence underlines the necessity to develop purification strategies in order to maximize the potential of potato sprout waste as a source of 5-CQA.
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Chowański S, Winkiel M, Szymczak-Cendlak M, Marciniak P, Mańczak D, Walkowiak-Nowicka K, Spochacz M, Bufo SA, Scrano L, Adamski Z. Solanaceae glycoalkaloids: α-solanine and α-chaconine modify the cardioinhibitory activity of verapamil. PHARMACEUTICAL BIOLOGY 2022; 60:1317-1330. [PMID: 35811507 PMCID: PMC9275482 DOI: 10.1080/13880209.2022.2094966] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/09/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
CONTEXT Solanaceae glycoalkaloids (SGAs) possess cardiomodulatory activity. OBJECTIVE This study investigated the potential interaction between verapamil and glycoalkaloids. MATERIAL AND METHODS The cardioactivity of verapamil and glycoalkaloids (α-solanine and α-chaconine) was tested in adult beetle (Tenebrio molitor) myocardium in vitro using microdensitometric methods. The myocardium was treated with pure substances and mixtures of verapamil and glycoalkaloids for 9 min with saline as a control. Two experimental variants were used: simultaneous application of verapamil and glycoalkaloids or preincubation of the myocardium with one of the compounds followed by perfusion with a verapamil solution. We used 9 × 10-6-5 × 10-5 M and 10-9-10-5 M concentration for verapamil and glycoalkaloids, respectively. RESULTS Verapamil, α-solanine and α-chaconine showed cardioinhibitory activity with IC50 values equal to 1.69 × 10-5, 1.88 × 10-7 and 7.48 × 10-7 M, respectively. When the glycoalkaloids were applied simultaneously with verapamil, an antagonistic effect was observed with a decrease in the maximal inhibitory effect and prolongation of t50 and the recovery time characteristic of verapamil. We also confirmed the expression of two transcript forms of the gene that encodes the α1 subunit of L-type calcium channels in the myocardium and brain with equal transcription levels of both forms in the myocardium and significant domination of the shorter form in the brain of the insect species tested. DISCUSSION AND CONCLUSIONS The results show that attention to the composition of the daily diet during therapy with various drugs is particularly important. In subsequent studies, the nature of interaction between verapamil and SGAs on the molecular level should be checked, and whether this interaction decreases the efficiency of cardiovascular therapy with verapamil in humans.
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Affiliation(s)
- Szymon Chowański
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Magdalena Winkiel
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Monika Szymczak-Cendlak
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Paweł Marciniak
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Dominika Mańczak
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Karolina Walkowiak-Nowicka
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Marta Spochacz
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Sabino A. Bufo
- Department of Sciences, University of Basilicata, Potenza, Italy
- Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, Johannesburg, South Africa
| | - Laura Scrano
- Department of Sciences, University of Basilicata, Potenza, Italy
- Department of European Culture, University of Basilicata, Matera, Italy
| | - Zbigniew Adamski
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
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Dhalsamant K, Singh CB, Lankapalli R. A Review on Greening and Glycoalkaloids in Potato Tubers: Potential Solutions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:13819-13831. [PMID: 36260761 DOI: 10.1021/acs.jafc.2c01169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Greening is an undesirable trait that develops in potatoes upon light exposure. This condition lowers market value, increases tuber waste in retail stores, and consequently influences the price of product in the long run. When potatoes are subjected to artificial light, the amyloplast converts into chloroplast. Although the development of total glycoalkaloids (TGA) is independent of light, the greening induced by exposure of potato to artificial light is an indication of probable TGA acceleration, which could be present in a low amount initially. Several research studies on optimum postharvest factors (temperature, lighting condition, relative humidity, pretreatment, storage air composition, and packaging) have been carried out to avoid greening and TGA development. This current review highlights major postharvest factors and summarizes past research regarding cause of greening and TGA development in potatoes in retail stores. Additionally, it also portrays the potential solutions that could help mitigate this problem, ultimately reducing wastage and achieving food security.
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Affiliation(s)
- Kshanaprava Dhalsamant
- Centre for Applied Research, Innovation, and Entrepreneurship (CARIE), Lethbridge College, Lethbridge, Alberta T1K 1L6, Canada
| | - Chandra B Singh
- Centre for Applied Research, Innovation, and Entrepreneurship (CARIE), Lethbridge College, Lethbridge, Alberta T1K 1L6, Canada
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Effect of mesoporous silica nanoparticles loaded with α-tomatine on HepG2 cancer cells studied in vitro. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Faria-Silva C, de Sousa M, Carvalheiro MC, Simões P, Simões S. Alpha-tomatine and the two sides of the same coin: An anti-nutritional glycoalkaloid with potential in human health. Food Chem 2022; 391:133261. [DOI: 10.1016/j.foodchem.2022.133261] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 04/20/2022] [Accepted: 05/17/2022] [Indexed: 01/10/2023]
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12
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Irungu FG, Tanga CM, Ndiritu FG, Mwaura L, Moyo M, Mahungu SM. Use of magnetic fields reduces α‐chaconine, α‐solanine, and total glycoalkaloids in stored potatoes (
Solanum tuberosum
L.). J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Francis Gichuho Irungu
- Department of Food Technology Chuka University Chuka Kenya
- Department of Dairy and Food Science and Technology Egerton University Kenya
| | | | | | - Lucy Mwaura
- Food and Nutritional Evaluation Laboratory International Potato Center (CIP) Nairobi Kenya
| | - Mukani Moyo
- Food and Nutritional Evaluation Laboratory International Potato Center (CIP) Nairobi Kenya
| | - Symon Maina Mahungu
- Department of Dairy and Food Science and Technology Egerton University Kenya
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Overview of Recent Liquid Chromatography Mass Spectrometry-Based Methods for Natural Toxins Detection in Food Products. Toxins (Basel) 2022; 14:toxins14050328. [PMID: 35622576 PMCID: PMC9143482 DOI: 10.3390/toxins14050328] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 01/25/2023] Open
Abstract
Natural toxins include a wide range of toxic metabolites also occurring in food and products, thus representing a risk for consumer health. In the last few decades, several robust and sensitive analytical methods able to determine their occurrence in food have been developed. Liquid chromatography mass spectrometry is the most powerful tool for the simultaneous detection of these toxins due to its advantages in terms of sensitivity and selectivity. A comprehensive review on the most relevant papers on methods based on liquid chromatography mass spectrometry for the analysis of mycotoxins, alkaloids, marine toxins, glycoalkaloids, cyanogenic glycosides and furocoumarins in food is reported herein. Specifically, a literature search from 2011 to 2021 was carried out, selecting a total of 96 papers. Different approaches to sample preparation, chromatographic separation and detection mode are discussed. Particular attention is given to the analytical performance characteristics obtained in the validation process and the relevant application to real samples.
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14
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Gouhar SA, Abo-Elfadl MT, Gamal-Eldeen AM, El-Daly SM. Involvement of miRNAs in response to oxidative stress induced by the steroidal glycoalkaloid α-solanine in hepatocellular carcinoma cells. ENVIRONMENTAL TOXICOLOGY 2022; 37:212-223. [PMID: 34655286 DOI: 10.1002/tox.23390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/28/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND α-Solanine is a natural toxic glycoalkaloid produced in some species of the Solanaceae family with antiproliferative activity in various cancers. OBJECTIVE This study aimed to investigate the effect of α-solanine on the oxidative stress status in human hepatocellular carcinoma HepG2 cells and to evaluate its influence on microRNAs (miRNAs) associated with oxidative stress and NF-κB regulation. METHODS The prooxidant effect of α-solanine was tested by the decay rate of the fluorescent probe, β-phycoerythrin, and by measuring malondialdehyde, reduced Glutathione, catalase, and superoxide dismutase following treatment of HepG2 cells with low doses of α-solanine. Immunocytochemical techniques were used to detect mitochondrial membrane potential (ΔΨm) and NF-κB protein. The gene expression of NF-κB and miRNAs was evaluated by real-time PCR. RESULTS α-Solanine is a prooxidant that causes a rapid decay in the fluorescence intensity of β-phycoerythrin. It induces oxidative stress-related alterations such as increased lipid peroxidation and reduced antioxidant markers. Oxidative stress induced by α-solanine was mediated by decreased ΔΨm, increased NF-κB expression, upregulation of miRNAs that control oxidative stress by regulating the NF-κB pathway, and downregulation of oncogenic miRNAs that inhibit the NF-κB pathway. CONCLUSION α-Solanine-induced oxidative stress is mediated by alterations in the NF-κB pathway with a detected crosstalk between α-solanine treatment and the expression of oxidative stress-responsive miRNAs.
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Affiliation(s)
- Shaimaa A Gouhar
- Medical Biochemistry Department, Medical Research Division, National Research Centre, Cairo, Egypt
| | - Mahmoud T Abo-Elfadl
- Biochemistry Department, Genetic Engineering and Biotechnology Research Division, National Research Centre, Cairo, Egypt
- Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt
| | - Amira M Gamal-Eldeen
- Biochemistry Department, Genetic Engineering and Biotechnology Research Division, National Research Centre, Cairo, Egypt
- Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt
| | - Sherien M El-Daly
- Medical Biochemistry Department, Medical Research Division, National Research Centre, Cairo, Egypt
- Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt
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15
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Mokgehle TM, Madala N, Gitari WM, Tavengwa NT. Effect of Microwave-Assisted Aqueous Two-Phase Extraction of α-Solanine from S. retroflexum and Analysis on UHPLC-qTOF-MS. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-021-02224-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Abstract
A new, fast and efficient method, hyphenated microwave-assisted aqueous two-phase extraction (MA-ATPE) was applied in the extraction of α-solanine from Solanum retroflexum. This environmentally friendly extraction method applied water and ethanol as extraction solvents. Central composite design (CCD) was performed which included numerical parameters such as time, mass of plant powder and microwave power. The categorical factors included the chaotrope — NaCl or the kosmotrope — Na2CO3. Fitting the central composite design response surface model to the data generated a quadratic model with a good fit (R2 = 0.920). The statistically significant (p < 0.05) parameters such as time and mass of plant powder were influential in the extraction of α-solanine. Quantification of α-solanine was achieved using a robust and sensitive feature of the ultra-high performance quadrupole time of flight mass spectrometer (UHPLC-qTOF-MS), multiple reaction monitoring (MRM). The optimized condition for the extraction of α-solanine in the presence of NaCl and Na2CO3 was a period of 1 min at a mass of 1.2 g using a microwave power of 40%. Maximal extraction of α-solanine was 93.50 mg kg−1 and 72.16 mg kg−1 for Na2CO3 and NaCl, respectively. The synergistic effect of salting-out and microwave extraction was influential in extraction of α-solanine. Furthermore, the higher negative charge density of the kosmotrope (Na2CO3) was responsible for its greater extraction of α-solanine than chaotrope (NaCl). The shorter optimal extraction times of MA-ATPE make it a potential technique that could meet market demand as it is a quick, green and efficient method for removal of toxic metabolites in nutraceuticals.
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16
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Ostreikova TO, Kalinkina OV, Bogomolov NG, Chernykh IV. Glycoalkaloids of Plants in the Family Solanaceae (Nightshade) as Potential Drugs. Pharm Chem J 2022; 56:948-957. [PMID: 36277854 PMCID: PMC9579588 DOI: 10.1007/s11094-022-02731-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Indexed: 11/05/2022]
Abstract
Worldwide interest in medicinal plants and related drugs is growing because of the increased spectrum of new synthetic drugs. In this context, secondary plant metabolites are most significant. This review analyzes data on the structures and biosyntheses of metabolites such as glycoalkaloids; methods for their extraction from plants of the family Solanaceae, particularly potato S. tuberosum; their qualitative and quantitative analysis; biological activity; and toxicity. This information could be useful in the selection of methods for sample preparation and extraction of glycoalkaloids during the search for new plant sources with prospects of creating effective and safe pharmacological agents.
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Affiliation(s)
- T. O. Ostreikova
- grid.445664.10000 0004 0562 7304I. P. Pavlov Ryazan State Medical University, Ministry of Health of the Russian Federation, 8 Vysokovol’tnaya St, Ryazan, 390026 Russia
| | - O. V. Kalinkina
- grid.445664.10000 0004 0562 7304I. P. Pavlov Ryazan State Medical University, Ministry of Health of the Russian Federation, 8 Vysokovol’tnaya St, Ryazan, 390026 Russia
| | - N. G. Bogomolov
- grid.445664.10000 0004 0562 7304I. P. Pavlov Ryazan State Medical University, Ministry of Health of the Russian Federation, 8 Vysokovol’tnaya St, Ryazan, 390026 Russia
| | - I. V. Chernykh
- grid.445664.10000 0004 0562 7304I. P. Pavlov Ryazan State Medical University, Ministry of Health of the Russian Federation, 8 Vysokovol’tnaya St, Ryazan, 390026 Russia
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17
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Spochacz M, Chowański S, Szymczak-Cendlak M, Marciniak P, Lelario F, Salvia R, Nardiello M, Scieuzo C, Scrano L, Bufo SA, Adamski Z, Falabella P. Solanum nigrum Extract and Solasonine Affected Hemolymph Metabolites and Ultrastructure of the Fat Body and the Midgut in Galleria mellonella. Toxins (Basel) 2021; 13:617. [PMID: 34564621 PMCID: PMC8473104 DOI: 10.3390/toxins13090617] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/28/2021] [Accepted: 08/29/2021] [Indexed: 12/17/2022] Open
Abstract
Glycoalkaloids, secondary metabolites abundant in plants belonging to the Solanaceae family, may affect the physiology of insect pests. This paper presents original results dealing with the influence of a crude extract obtained from Solanum nigrum unripe berries and its main constituent, solasonine, on the physiology of Galleria mellonella (Lepidoptera) that can be used as an alternative bioinsecticide. G. mellonella IV instar larvae were treated with S. nigrum extract and solasonine at different concentrations. The effects of extract and solasonine were evaluated analyzing changes in carbohydrate and amino acid composition in hemolymph by RP-HPLC and in the ultrastructure of the fat body cells by TEM. Both extract and solasonine changed the level of hemolymph metabolites and the ultrastructure of the fat body and the midgut cells. In particular, the extract increased the erythritol level in the hemolymph compared to control, enlarged the intracellular space in fat body cells, and decreased cytoplasm and lipid droplets electron density. The solasonine, tested with three concentrations, caused the decrease of cytoplasm electron density in both fat body and midgut cells. Obtained results highlighted the disturbance of the midgut and the fat body due to glycoalkaloids and the potential role of hemolymph ingredients in its detoxification. These findings suggest a possible application of glycoalkaloids as a natural insecticide in the pest control of G. mellonella larvae.
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Affiliation(s)
- Marta Spochacz
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland; (S.C.); (M.S.-C.); (P.M.); (Z.A.)
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland
| | - Szymon Chowański
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland; (S.C.); (M.S.-C.); (P.M.); (Z.A.)
| | - Monika Szymczak-Cendlak
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland; (S.C.); (M.S.-C.); (P.M.); (Z.A.)
| | - Paweł Marciniak
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland; (S.C.); (M.S.-C.); (P.M.); (Z.A.)
| | - Filomena Lelario
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (F.L.); (R.S.); (M.N.); (C.S.); (L.S.); (S.A.B.); (P.F.)
| | - Rosanna Salvia
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (F.L.); (R.S.); (M.N.); (C.S.); (L.S.); (S.A.B.); (P.F.)
| | - Marisa Nardiello
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (F.L.); (R.S.); (M.N.); (C.S.); (L.S.); (S.A.B.); (P.F.)
| | - Carmen Scieuzo
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (F.L.); (R.S.); (M.N.); (C.S.); (L.S.); (S.A.B.); (P.F.)
| | - Laura Scrano
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (F.L.); (R.S.); (M.N.); (C.S.); (L.S.); (S.A.B.); (P.F.)
- Department of European Culture, University of Basilicata, 75100 Matera, Italy
| | - Sabino A. Bufo
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (F.L.); (R.S.); (M.N.); (C.S.); (L.S.); (S.A.B.); (P.F.)
- Department of Geography, Environmental Management & Energy Studies, University of Johannesburg, Johannesburg 2092, South Africa
| | - Zbigniew Adamski
- Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland; (S.C.); (M.S.-C.); (P.M.); (Z.A.)
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland
| | - Patrizia Falabella
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (F.L.); (R.S.); (M.N.); (C.S.); (L.S.); (S.A.B.); (P.F.)
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18
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Mokgehle TM, Madala N, Gitari WM, Tavengwa NT. Advances in the development of biopolymeric adsorbents for the extraction of metabolites from nutraceuticals with emphasis on Solanaceae and subsequent pharmacological applications. Carbohydr Polym 2021; 264:118049. [PMID: 33910751 DOI: 10.1016/j.carbpol.2021.118049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 03/31/2021] [Accepted: 04/03/2021] [Indexed: 12/17/2022]
Abstract
Biopolymers are renowned for their sustainable, biodegradable, biocompatible and most of them have antitoxic characteristics. These versatile naturally derived compounds include proteins, polynucleotides (RNA and DNA) and polysaccharides. Cellulose and chitosan are the most abundant polysaccharides. Proteins and polysaccharides have been applied as emulsifiers. Additional applications of proteins and polysaccharides include cosmetics, food and wastewater treatment for adsorption of dyes and pesticides. However, more interesting applications of biopolymers are emerging, such as use in transport systems for delivery of plant derived nutraceuticals to sites of inflammation, due to its inherent ability to immobilize different biological and chemical systems. This review aims to give a summary on new trends and complement what is already known in the development of polysaccharides and proteins as adsorbents of nutraceutical compounds. The application of polysaccharides/protein containing the adsorbed Solanum derived nutraceutical compounds for drug deliveryis also reviewed.
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Affiliation(s)
- Tebogo Mphatlalala Mokgehle
- Department of Chemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Ntakadzeni Madala
- Department of Biochemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Wilson Mugera Gitari
- Department of Ecology and Resource Management, School of Environmental Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Nikita Tawanda Tavengwa
- Department of Chemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa.
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You Y, van Kan JA. Bitter and sweet make tomato hard to (b)eat. THE NEW PHYTOLOGIST 2021; 230:90-100. [PMID: 33220068 PMCID: PMC8126962 DOI: 10.1111/nph.17104] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 11/09/2020] [Indexed: 05/03/2023]
Abstract
The glycoalkaloid saponin α-tomatine is a tomato-specific secondary metabolite that accumulates to millimolar levels in vegetative tissues and has antimicrobial and antinutritional activity that kills microbial pathogens and deters herbivorous insects. We describe recent insights into the biosynthetic pathway of α-tomatine synthesis and its regulation. We discuss the mode of action of α-tomatine by physically interacting with sterols, thereby disrupting membranes, and how tomato protects itself from its toxic action. Tomato pathogenic microbes can enzymatically hydrolyze, and thereby inactivate, α-tomatine using either of three distinct types of glycosyl hydrolases. We also describe findings that extend well beyond the simple concept of plants producing toxins and pathogens inactivating them. There are reports that toxicity of α-tomatine is modulated by external pH, that α-tomatine can trigger programmed cell death in fungi, that cellular localization matters for the impact of α-tomatine on invading microbes, and that α-tomatine breakdown products generated by microbial hydrolytic enzymes can modulate plant immune responses. Finally, we address a number of outstanding questions that deserve attention in the future.
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Affiliation(s)
- Yaohua You
- Laboratory of PhytopathologyWageningen UniversityWageningen6708 PBthe Netherlands
| | - Jan A.L. van Kan
- Laboratory of PhytopathologyWageningen UniversityWageningen6708 PBthe Netherlands
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20
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Singh G, Tiwari A, Choudhir G, P H, Kumar A, Sharma S. Unraveling the potential role of bioactive molecules produced by Trichoderma spp. as inhibitors of tomatinase enzyme having an important role in wilting disease: an in-silico approach. J Biomol Struct Dyn 2021; 40:7535-7544. [PMID: 33719892 DOI: 10.1080/07391102.2021.1898476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Tomatinase; a saponin detoxification enzyme produced by Fusarium oxysporumf.sp. lycopersici is reported as a causative agent for wilting disease in tomato crops. The disease is instigated by inhibiting the activity of α-tomatine. Trichoderma spp. widely used as biocontrol agent play an essential role in plant growth and pathogen control. In the current study, an in-silico approach using substrate docking, molecular dynamics and MM/PBSA analysis was used to evaluate the potential role of bioactive metabolites produced by Trichoderma spp. The study aims to establish the efficacy of catalytic tendency of the bioactive metabolites to combat the effect of tomatinase enzyme employing α-tomatine as the substrate. By means of the integrated molecular modeling approach; novel bioactive metabolites namely, Trichodermamide B, Trichosetin and Virone were found to be the potential inhibitors against tomatinase enzyme secreted by Fusarium oxysporum f.sp. lycopersici. Molecular dynamic (MD) simulations displayed that the screened ligands bound tomatinase during 150 ns of MD simulations. Furthermore, the (MM-PBSA) free energy calculations depicted that screened molecules possess stable and favorable energies for Trichodermamide B (-7.1 kcal/mol), Trichosetin (-7.4 kcal/mol) and Virone (-7.9 kcal/mol) thereby instigating robust binding with the enzyme's binding site. The results attained in this study, reflects that these bioactive metabolites may serve as potential substrates to control and inhibit the tomatinase enzyme; playing an integral role in combating the wilt disease.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Garima Singh
- Centre for Rural Development & Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Abhay Tiwari
- Centre for Rural Development & Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Gourav Choudhir
- Centre for Rural Development & Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Hariprasad P
- Centre for Rural Development & Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Anuj Kumar
- Uttarakhand Council for Biotechnology, Dehradun, Uttarakhand, India
| | - Satyawati Sharma
- Centre for Rural Development & Technology, Indian Institute of Technology Delhi, New Delhi, India
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21
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Spochacz M, Szymczak M, Chowański S, Bufo SA, Adamski Z. Solanum Nigrum Fruit Extract Increases Toxicity of Fenitrothion-A Synthetic Insecticide, in the Mealworm Beetle Tenebrio Molitor Larvae. Toxins (Basel) 2020; 12:E612. [PMID: 32987787 PMCID: PMC7598628 DOI: 10.3390/toxins12100612] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/16/2020] [Accepted: 09/21/2020] [Indexed: 12/14/2022] Open
Abstract
Synthetic insecticides are widely used for crop protection both in the fields and in the food stored facilities. Due to their toxicity, and assumptions of Integrated Pest Management, we conducted two independent experiments, where we studied the influence of Solanum nigrum unripe fruit extract on the toxicity of an organophosphorus insecticide fenitrothion. In the first variant of the experiment, Tenebrio molitor larvae were fed with blended fenitrothion (LC50) and the extract in four concentrations (0.01, 0.1, 1 and 10%) in ratio 1:1 for 3 days. In the second variant, a two-day application of fenitrothion (LC40) was preceded by a one-day extract treatment. The first variant did not show any increase in lethality compared to fenitrothion; however, ultrastructure observations exhibited swollen endoplasmic reticulum (ER) membranes in the midgut and nuclear and cellular membranes in the fat body, after application of blended fenitrothion and extract. An increased amount of heterochromatin in the fat body was observed, too. In the second variant, pre-treatment of the extract increased the lethality of larvae, decreased the level of glycogen and lipids in the fat body and disrupted integrity of midgut cellular membranes. S. nigrum extract, applied prior to fenitrothion treatment can be a factor increasing fenitrothion toxicity in T. molitor larvae. Thus, this strategy may lead to decreased emission of synthetic insecticides to the environment.
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Affiliation(s)
- Marta Spochacz
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (M.S.); (S.C.); (Z.A.)
| | - Monika Szymczak
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (M.S.); (S.C.); (Z.A.)
| | - Szymon Chowański
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (M.S.); (S.C.); (Z.A.)
| | - Sabino Aurelio Bufo
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy;
- Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, Auckland Park Kingsway Campus, Johannesburg 2092, South Africa
| | - Zbigniew Adamski
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (M.S.); (S.C.); (Z.A.)
- Electron and Confocal Microscope Laboratory, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland
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