1
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El-Houssiny AS, Soliman AAF, Abdel-Nour KN. Assessment of the cytotoxic effect of carboxymethyl chitosan-loaded amygdalin nanoparticles against human normal and cancer cell lines. DISCOVER NANO 2024; 19:62. [PMID: 38573410 PMCID: PMC10994899 DOI: 10.1186/s11671-024-03998-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 03/17/2024] [Indexed: 04/05/2024]
Abstract
In recent years, the development of antitumor drugs has been dedicated to natural products. Amygdalin is a natural herbal cyanoglycoside that has anticarcinogenic effect on many types of cancers once hydrogen cyanide (HCN) is released. The main objective of the present study is to synthesize and investigate the potential of carboxymethyl chitosan nanoparticles (CMC NPs) as drug delivery agents for amygdalin encapsulation and its delivery to cancer and normal cell lines. In this study, carboxymethyl chitosan nanoparticles encapsulated with amygdalin (CMC-Am NPs) were prepared and characterized through their particle size, surface charge, chemical structure and dielectric properties. Also, the invitro drug release of amygdalin from CMC NPs was studied. Additionally, the cytotoxcity of the amygdalin and CMC-loaded amygdalin NPs were evaluated through MTT assay. The results showed that the prepared CMC-loaded amygdalin NPs exhibited a small particle size of 129 nm, high zeta potential value of - 43 mV and confirmed the amygdalin stability and compatibility with CMC NPs. Furthermore, the CMC NPs demonstrated sustained release of amygdalin during 24 h. Moreover, compared to free amygdalin, amygdalin-loaded CMC NPs have significant anti-cancerous effect on human colon HCT-116 and breast MCF-7 cancer cell lines while being safe on normal cells BJ1. In conclusion, CMC NPs can be employed as an efficient drug delivery vehicle for controlled and sustained amygdalin release with enhanced cytotoxicity on malignant cells without harming normal cells.
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Affiliation(s)
- A S El-Houssiny
- Microwave Physics and Dielectrics Department, National Research Centre, Dokki, Cairo, Egypt.
| | - A A F Soliman
- Pharmacognosy Department, National Research Centre, Dokki, Cairo, Egypt
| | - K N Abdel-Nour
- Microwave Physics and Dielectrics Department, National Research Centre, Dokki, Cairo, Egypt
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2
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Tang S, Wang M, Peng Y, Liang Y, Lei J, Tao Q, Ming T, Shen Y, Zhang C, Guo J, Xu H. Armeniacae semen amarum: a review on its botany, phytochemistry, pharmacology, clinical application, toxicology and pharmacokinetics. Front Pharmacol 2024; 15:1290888. [PMID: 38323080 PMCID: PMC10844384 DOI: 10.3389/fphar.2024.1290888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 01/10/2024] [Indexed: 02/08/2024] Open
Abstract
Armeniacae semen amarum-seeds of Prunus armeniaca L. (Rosaceae) (ASA), also known as Kuxingren in Chinese, is a traditional Chinese herbal drug commonly used for lung disease and intestinal disorders. It has long been used to treat coughs and asthma, as well as to lubricate the colon and reduce constipation. ASA refers to the dried ripe seed of diverse species of Rosaceae and contains a variety of phytochemical components, including glycosides, organic acids, amino acids, flavonoids, terpenes, phytosterols, phenylpropanoids, and other components. Extensive data shows that ASA exhibits various pharmacological activities, such as anticancer activity, anti-oxidation, antimicrobial activity, anti-inflammation, protection of cardiovascular, neural, respiratory and digestive systems, antidiabetic effects, and protection of the liver and kidney, and other activities. In clinical practice, ASA can be used as a single drug or in combination with other traditional Chinese medicines, forming ASA-containing formulas, to treat various afflictions. However, it is important to consider the potential adverse reactions and pharmacokinetic properties of ASA during its clinical use. Overall, with various bioactive components, diversified pharmacological actions and potent efficacies, ASA is a promising drug that merits in-depth study on its functional mechanisms to facilitate its clinical application.
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Affiliation(s)
- Shun Tang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Minmin Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuhui Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuanjing Liang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiarong Lei
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qiu Tao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Tianqi Ming
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yanqiao Shen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chuantao Zhang
- Department of Respiratory Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jinlin Guo
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Haibo Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacology, School of Pharmaceutical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Kalderis D, Görmez Ö, Saçlı B, Çalhan SD, Gözmen B. Valorization of loquat seeds by hydrothermal carbonization for the production of hydrochars and aqueous phases as added-value products. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118612. [PMID: 37480637 DOI: 10.1016/j.jenvman.2023.118612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/25/2023] [Accepted: 07/10/2023] [Indexed: 07/24/2023]
Abstract
In the framework of circular bio-economy, waste loquat seeds were utilized for the production of two added-value products. The seeds were hydrothermally carbonized at a temperature range of 150-250 °C and time range 2-6 h and the resultant hydrochars and aqueous phases were characterized using various methods. The optimum higher heating value of 30.64 MJ kg-1, ash content of 1.99 wt % and alkali index of 0.05 were achieved for the hydrochar prepared at 250 °C and 6 h, establishing its suitability for energy-related applications. The aqueous phase obtained at 250 °C and 6 h achieved 90% scavenging of the 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) radical and had a IC50 value of 43.71 μg mL-1. Principal component analysis showed that the production of phenols, ketones, alkenes and organic acids was favored at >200 °C, whereas furans and aldehydes were primarily formed at 150 °C. Conclusively, both added-value products were obtained at the same optimum hydrothermal carbonization conditions of 250 °C and 6 h treatment time. In a bio-refinery context, this has the practical implication that both bio-products be obtained simultaneously, without the need to switch between different temperatures and residence times.
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Affiliation(s)
- Dimitris Kalderis
- Department of Electronics Engineering, Laboratory of Environmental Technologies and Applications (LETA), Hellenic Mediterranean University, Chania, Crete, 73100, Greece.
| | - Özkan Görmez
- Department of Chemistry, Faculty of Science, Mersin University, Mersin, Turkey
| | - Barış Saçlı
- Department of Chemistry, Faculty of Science, Mersin University, Mersin, Turkey
| | - Selda Doğan Çalhan
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - Belgin Gözmen
- Department of Chemistry, Faculty of Science, Mersin University, Mersin, Turkey
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Spanoudaki M, Stoumpou S, Papadopoulou SK, Karafyllaki D, Solovos E, Papadopoulos K, Giannakoula A, Giaginis C. Amygdalin as a Promising Anticancer Agent: Molecular Mechanisms and Future Perspectives for the Development of New Nanoformulations for Its Delivery. Int J Mol Sci 2023; 24:14270. [PMID: 37762572 PMCID: PMC10531689 DOI: 10.3390/ijms241814270] [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: 08/15/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Cancer rates are increasing, and cancer is one of the main causes of death worldwide. Amygdalin, also known as vitamin B17 (and laetrile, a synthetic compound), is a cyanogenic glycoside compound that is mainly found in the kernels and pulps of fruits. This compound has been proposed for decades as a promising naturally occurring substance which may provide anticancer effects. This is a comprehensive review which critically summarizes and scrutinizes the available studies exploring the anticancer effect of amygdalin, highlighting its potential anticancer molecular mechanisms as well as the need for a nontoxic formulation of this substance. In-depth research was performed using the most accurate scientific databases, e.g., PubMed, Cochrane, Embase, Medline, Scopus, and Web of Science, applying effective, characteristic, and relevant keywords. There are several pieces of evidence to support the idea that amygdalin can exert anticancer effects against lung, breast, prostate, colorectal, cervical, and gastrointestinal cancers. Amygdalin has been reported to induce apoptosis of cancer cells, inhibiting cancer cells' proliferation and slowing down tumor metastatic spread. However, only a few studies have been performed in in vivo animal models, while clinical studies remain even more scarce. The current evidence cannot support a recommendation of the use of nutritional supplements with amygdalin due to its cyano-moiety which exerts adverse side effects. Preliminary data have shown that the use of nanoparticles may be a promising alternative to enhance the anticancer effects of amygdalin while simultaneously reducing its adverse side effects. Amygdalin seems to be a promising naturally occurring agent against cancer disease development and progression. However, there is a strong demand for in vivo animal studies as well as human clinical studies to explore the potential prevention and/or treatment efficiency of amygdalin against cancer. Moreover, amygdalin could be used as a lead compound by effectively applying recent developments in drug discovery processes.
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Affiliation(s)
- Maria Spanoudaki
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 54700 Sindos, Greece; (M.S.); (S.S.); (S.K.P.); (A.G.)
- Clinical Dietetics and Nutritional Department, 424 General Military Hospital, 56429 Thessaloniki, Greece
| | - Sofia Stoumpou
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 54700 Sindos, Greece; (M.S.); (S.S.); (S.K.P.); (A.G.)
| | - Sousana K. Papadopoulou
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 54700 Sindos, Greece; (M.S.); (S.S.); (S.K.P.); (A.G.)
| | - Dimitra Karafyllaki
- Department of Nutrition and Dietetics, School of Physical Education, Sport Science and Dietetics, University of Thessaly, 42132 Trikala, Greece;
| | - Evangelos Solovos
- Orthopedic Department, 424 General Military Hospital, 56429 Thessaloniki, Greece; (E.S.); (K.P.)
| | | | - Anastasia Giannakoula
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 54700 Sindos, Greece; (M.S.); (S.S.); (S.K.P.); (A.G.)
- Laboratory of Plant Physiology and Postharvest Physiology of Fruits, Department of Agriculture, International Hellenic University, 54700 Sindos, Greece
| | - Constantinos Giaginis
- Department of Food Science and Nutrition, School of Environment, University of Aegean, 81400 Lemnos, Greece
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Zhang D, Ye J, Song Y, Wei Y, Jiang S, Chen Y, Shao X. Isomerization and Stabilization of Amygdalin from Peach Kernels. Molecules 2023; 28:molecules28114550. [PMID: 37299025 DOI: 10.3390/molecules28114550] [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: 05/06/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
In this study, isomerization conditions, cytotoxic activity, and stabilization of amygdalin from peach kernels were analyzed. Temperatures greater than 40 °C and pHs above 9.0 resulted in a quickly increasing isomer ratio (L-amygdalin/D-amygdalin). At acidic pHs, isomerization was significantly inhibited, even at high temperature. Ethanol inhibited isomerization; the isomer rate decreased with the ethanol concentration increasing. The growth-inhibitory effect on HepG2 cells of D-amygdalin was diminished as the isomer ratio increased, indicating that isomerization reduces the pharmacological activity of D-amygdalin. Extracting amygdalin from peach kernels by ultrasonic power at 432 W and 40 °C in 80% ethanol resulted in a 1.76% yield of amygdalin with a 0.04 isomer ratio. Hydrogel beads prepared by 2% sodium alginate successfully encapsulated the amygdalin, and its encapsulation efficiency and drug loading rate reached 85.93% and 19.21%, respectively. The thermal stability of amygdalin encapsulated in hydrogel beads was significantly improved and reached a slow-release effect in in vitro digestion. This study provides guidance for the processing and storage of amygdalin.
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Affiliation(s)
- Decai Zhang
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo 315800, China
| | - Jianfen Ye
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo 315800, China
| | - Yu Song
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo 315800, China
| | - Yingying Wei
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo 315800, China
| | - Shu Jiang
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo 315800, China
| | - Yi Chen
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo 315800, China
| | - Xingfeng Shao
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo 315800, China
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6
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Effect of amygdalin on MCF-7, MDA-MB-231 and T-47D breast cancer cells in the in vitro study. POSTEP HIG MED DOSW 2022. [DOI: 10.2478/ahem-2022-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Introduction
Amygdalin is a chemical compound found in the seeds of many edible plants. Different studies using cancer cell cultures in vitro indicate its potential anti-cancer activity. Various types of cancer cells showed different responses to different doses of amygdalin. This may suggest many in vitro models of the activity of this compound. The aim of the study was to evaluate the effect of amygdalin on MCF-7, MDA-MB-231, and T-47D breast cancer cells and on HFF-1 normal dermal fibroblasts (control cell culture) in vitro. Cell proliferation, viability, and the changes in mRNA transcript levels of basic proteins (BAX, caspase 3 and BCL-2) involved in apoptosis were analyzed.
Materials and Methods
MCF-7, MDA-MB-231, T-47D, and HFF-1 cell lines were purchased from the ATCC. Amygdalin derived from apricot kernels was purchased from Sigma-Aldrich. CVDE, WST-1, and LDH assays were used to evaluate the effects of amygdalin on cell proliferation and viability. Molecular evaluation of gene transcription levels was performed using the RT-qPCR technique.
Results
Amygdalin causes a dose-dependent decrease in proliferation and metabolic activity of MCF-7, MDA-MB-231, and T-47D cells in the in vitro cultures. In all cell cultures amygdalin affects the mRNA levels of pro-apoptotic BAX and caspase 3 proteins and anti-apoptotic BCL-2 protein.
Conclusions
Amygdalin anti-cancer activity may be selective in relation to different cell types. It seems that examined breast cancer cells are more sensitive to amygdalin than normal cells.
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Rodríguez Madrera R, Suárez Valles B. Analysis of Cyanogenic Compounds Derived from Mandelonitrile by Ultrasound-Assisted Extraction and High-Performance Liquid Chromatography in Rosaceae and Sambucus Families. Molecules 2021; 26:7563. [PMID: 34946645 PMCID: PMC8705553 DOI: 10.3390/molecules26247563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/02/2021] [Accepted: 12/12/2021] [Indexed: 11/19/2022] Open
Abstract
An analytical method for extraction and quantitative determination of amygdalin, prunasin, and sambunigrin in plant material is described. The method is based on extraction with high-power ultrasound (UAE), with acidified water as solvent and quantification by HPLC-DAD. The best extraction conditions were: 80% sonication amplitude, 55 s extraction time, 70% duty cycle, 0.1 g sample mass, and 10 mL acidified water (0.1% perchloric acid). Once developed, the method was validated in terms of accuracy and precision. Good linearity was obtained, with correlation coefficients exceeding 0.999 and the quantification limits ranged from 2.2 μg/g (amygdalin) to 9.6 μg/g (sambunigrin). The accuracy (recovery study) ranged between 90 and 104% and the reproducibility of the method was always <2.3% (RSD). Special attention should be paid to the ratio sample/solvent in samples with potential β-glucosidase activity to avoid degradation of the cyanogenic glycosides (CNGs). The proposed method was used to evaluate the content of CNGs in kernels of Prunus genera, apple seeds, apple pomace, and different plant materials of Sambucus nigra.
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Affiliation(s)
- Roberto Rodríguez Madrera
- Área de Tecnología de los Alimentos, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), 33300 Villaviciosa, Asturias, Spain;
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Revalorization of Almond By-Products for the Design of Novel Functional Foods: An Updated Review. Foods 2021; 10:foods10081823. [PMID: 34441599 PMCID: PMC8391475 DOI: 10.3390/foods10081823] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/26/2021] [Accepted: 08/04/2021] [Indexed: 02/05/2023] Open
Abstract
The search for waste minimization and the valorization of by-products are key to good management and improved sustainability in the food industry. The great production of almonds, based on their high nutritional value as food, especially almond kernels, generates tons of waste yearly. The remaining parts (skin, shell, hulls, etc.) are still little explored, even though they have been used as fuel by burning or as livestock feed. The interest in these by-products has been increasing, as they possess beneficial properties, caused by the presence of different bioactive compounds, and can be used as promising sources of new ingredients for the food, cosmetic and pharmaceutical industry. Additionally, the use of almond by-products is being increasingly applied for the fortification of already-existing food products, but there are some limitations, including the presence of allergens and mycotoxins that harden their applicability. This review focuses on the extraction technologies applied to the valorization of almond by-products for the development of new value-added products that would contribute to the reduction of environmental impact and an improvement in the sustainability and competitiveness of the almond industry.
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Amygdalin: Toxicity, Anticancer Activity and Analytical Procedures for Its Determination in Plant Seeds. Molecules 2021; 26:molecules26082253. [PMID: 33924691 PMCID: PMC8069783 DOI: 10.3390/molecules26082253] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/26/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023] Open
Abstract
Amygdalin (d-Mandelonitrile 6-O-β-d-glucosido-β-d-glucoside) is a natural cyanogenic glycoside occurring in the seeds of some edible plants, such as bitter almonds and peaches. It is a medically interesting but controversial compound as it has anticancer activity on one hand and can be toxic via enzymatic degradation and production of hydrogen cyanide on the other hand. Despite numerous contributions on cancer cell lines, the clinical evidence for the anticancer activity of amygdalin is not fully confirmed. Moreover, high dose exposures to amygdalin can produce cyanide toxicity. The aim of this review is to present the current state of knowledge on the sources, toxicity and anticancer properties of amygdalin, and analytical methods for its determination in plant seeds.
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Comparison Between β-Cyclodextrin-Amygdalin Nanoparticle and Amygdalin Effects on Migration and Apoptosis of MCF-7 Breast Cancer Cell Line. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02019-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Yarolimek MR, Kennemur JG. Exploration of mandelic
acid‐based
polymethacrylates: Synthesis, properties, and stereochemical effects. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mark R. Yarolimek
- Department of Chemistry and Biochemistry Florida State University Tallahassee Florida USA
| | - Justin G. Kennemur
- Department of Chemistry and Biochemistry Florida State University Tallahassee Florida USA
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Analysis of Amygdalin in Various Matrices Using Electrospray Ionization and Flowing Atmospheric-Pressure Afterglow Mass Spectrometry. Biomolecules 2020; 10:biom10101459. [PMID: 33086630 PMCID: PMC7603377 DOI: 10.3390/biom10101459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 10/13/2020] [Indexed: 01/21/2023] Open
Abstract
Amygdalin is a natural cyanogenic compound that plants produce in the fight against insects and herbivores. Excessive amounts of amygdalin by animals and humans can potentially lead to fatal intoxication. However, studies confirm that amygdalin has antitumor properties, including the ability to inhibit the proliferation of cancer cells and to induce their apoptosis. The analysis of amygdalin in various matrices is an important analytical problem today. The publication presents the methodology of direct determination of amygdalin in water, sewage, and biological materials using electrospray ionization mass spectrometry (ESI-MS) and a new analytical method using flowing atmospheric-pressure afterglow mass spectrometry (FAPA-MS). The methods of analyte pre-concentration using a magnetic, molecularly imprinted polymer (mag-MIP) and the influence of interferents on the recorded spectra were discussed. Analytical parameters in ESI-MS and FAPA-MS methods were established. The linearity range was 4.5 µg L−1–45 mg L−1 in positive mode ESI-MS and FAPA-MS. The limit of detection (LOD) for ESI-MS was 0.101 ± 0.003 µg L−1 and the limit of quantification (LOQ) was 0.303 ± 0.009 µg L−1. In FAPA-MS, the LOD was 0.050 ± 0.002 µg L−1 and the LOQ was 0.150 ± 0.006 µg L−1. The content of amygdalin in various matrices was determined.
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Safaei S, Kassaee MZ, Khorshidvand N, Ahmadi A. Effects of H-bonding and structural constituents on the acidity and potential "anticancer activity" of D-mandelonitrile-β-D-glucuronic acid by density functional theory. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04204-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Erikel E, Yuzbasioglu D, Unal F. Genotoxic and antigenotoxic potential of amygdalin on isolated human lymphocytes by the comet assay. J Food Biochem 2020; 44:e13436. [PMID: 32794256 DOI: 10.1111/jfbc.13436] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/23/2020] [Accepted: 07/23/2020] [Indexed: 12/23/2022]
Abstract
Amygdalin is a cyanogenic glycoside, mainly present in the seeds of the Rosaceae family such as apricots, peaches, and bitter almond. In this study, in vitro genotoxic and antigenotoxic effects of amygdalin have been investigated on human peripheral blood lymphocytes using the comet assay. The antigenotoxic effect of amygdalin was performed against hydrogen peroxide (H2O2) using three different treatment types (pre-, simultaneous, and post-treatment). The isolated lymphocytes were incubated with different concentrations of amygdalin (0.86-13.75 µg/ml) alone and in combination with H2O2 (100 µM). The results indicated that amygdalin exhibited an antigenotoxic effect against H2O2, but it did not induce the genotoxic effect alone in tested concentrations in vitro on human lymphocytes. PRACTICAL APPLICATIONS: Amygdalin is a natural compound used in alternative medicine as an anti-cancer, antipyretic, and cough suppressant. The comet assay which is relatively simple, rapid, sensitive, and economically efficient, measures the changes in genomic stability. Assessment of amygdalin alone has no genotoxic effect on human lymphocytes. Moreover, antigenotoxicity applications (pre-, simultaneous, and post-treatments) of amygdalin significantly reduced the DNA damage induced by H2O2 on isolated human lymphocytes. In conclusion, amygdalin is not genotoxic, also, it exhibited antigenotoxic activity against oxidatively damaged DNA due to its antioxidant properties on human lymphocytes.
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Affiliation(s)
- Esra Erikel
- Genetic Toxicology Laboratory, Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
| | - Deniz Yuzbasioglu
- Genetic Toxicology Laboratory, Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
| | - Fatma Unal
- Genetic Toxicology Laboratory, Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
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15
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He XY, Wu LJ, Wang WX, Xie PJ, Chen YH, Wang F. Amygdalin - A pharmacological and toxicological review. JOURNAL OF ETHNOPHARMACOLOGY 2020; 254:112717. [PMID: 32114166 DOI: 10.1016/j.jep.2020.112717] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 02/20/2020] [Accepted: 02/23/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Amygdalin is commonly distributed in plants of the Rosaceae, such as peach, plum, loquat, apple and bayberry, but most notably in the seeds (kernels) of apricot almonds. As a naturally aromatic cyanogenic compound, it has long been used in Asia, Europe and other regions for the treatment of various diseases including cough, asthma, nausea, leprosy and leukoderma. Importantly, in recent years, an increasing attention has been paid to its antitumor effect. AIM OF THE STUDY The paper aims to review the pharmacological activities and toxicological effects of amygdalin and provide a reference and perspective for its further investigation. METHODS Electronic databases including the Web of Science, Cochrane Library, PubMed, EMBASE, the Chinese Biological Medicine Database, China National Knowledge Infrastructure, Wanfang database and VIP information database were searched up to November 2019 to identify eligible studies. A meticulous review was performed, an in-depth analysis on the pharmacological activity and toxicology of amygdalin was conducted, and perspectives for future research were also discussed. RESULTS A total of 110 papers about in vitro/in vivo studies on amygdalin have been reviewed. Analysis on the data suggested that this compound presented pharmacological activities of anti-tumor, anti-fibrotic, anti-inflammatory, analgesic, immunomodulatory, anti-atherosclerosis, ameliorating digestive system and reproductive system, improving neurodegeneration and myocardial hypertrophy, as well as reducing blood glucose. In addition, studies revealed that amygdalin's toxicity was caused by its poisonous decomposite product of benzaldehyde and hydrogen cyanide after oral ingestion, toxicity of intravenous administration route was far less than the oral route, and it can be avoidable with an oral dose ranging from 0.6 to 1 g per day. CONCLUSION This paper has systematically reviewed the pharmacology and toxicology of amygdalin and provided comprehensive information on this compound. We hope this review highlights some perspectives for the future research and development of amygdalin.
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Affiliation(s)
- Xiao-Yan He
- College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, PR China
| | - Li-Juan Wu
- College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, PR China
| | - Wen-Xiang Wang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, PR China
| | - Pei-Jun Xie
- College of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610036, PR China
| | - Yun-Hui Chen
- College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, PR China.
| | - Fei Wang
- College of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610036, PR China.
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Boháčová I, Procházková S, Halko R. Separation and determination of amygdalin and unnatural neoamygdalin in natural food supplements by HPLC-DAD. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1445-1452. [PMID: 31397641 DOI: 10.1080/19440049.2019.1650962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
This work is focused on separation and determination of amygdalin and its unnatural form neoamygdalin in natural food supplements. Reversed-phase high-performance liquid chromatography with a high-stability silica-based column with C18 functional group has been used for solving this problem. The effect of the mobile phase composition as well as the column temperature on the separation of the amygdalin epimers has been investigated. Isocratic elution using a mobile phase composed of 0.05% aqueous formic acid and acetonitrile achieved the required separation within 17 min. Under optimum chromatographic conditions, the developed method was validated and was applied for the determination of amygdalin epimers in natural food supplements containing apricot or peach kernels. A simple extraction method using methanol as an extractant supported by an ultrasonic bath was used with recovery in the range of 94.8% to 104.3%. The limit of detection and limit of quantification values for R-amygdalin were 0.13 mg/L and 0.40 mg/L, respectively. The developed method proved to be precise with the intra-day and inter-day relative standard deviation values less than 2.23%.
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Affiliation(s)
- Iveta Boháčová
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava , Bratislava , Slovak Republic
| | - Simona Procházková
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava , Bratislava , Slovak Republic
| | - Radoslav Halko
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava , Bratislava , Slovak Republic
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Amygdalin Contents of Oil and Meal from Wild Almond: Effect of Different Heat Pretreatment and Extraction Methods. J AM OIL CHEM SOC 2019. [DOI: 10.1002/aocs.12257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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18
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Hellinghausen G, Farooq Wahab M, Armstrong DW. Improving visualization of trace components for quantification using a power law based integration approach. J Chromatogr A 2018; 1574:1-8. [DOI: 10.1016/j.chroma.2018.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/21/2018] [Accepted: 09/01/2018] [Indexed: 11/17/2022]
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Yamaguchi T, Asano Y. Prunasin production using engineered Escherichia coli expressing UGT85A47 from Japanese apricot and UDP-glucose biosynthetic enzyme genes. Biosci Biotechnol Biochem 2018; 82:2021-2029. [PMID: 30027801 DOI: 10.1080/09168451.2018.1497942] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Japanese apricot, Prunus mume Sieb. et Zucc., biosynthesizes the l-phenylalanine-derived cyanogenic glucosides prunasin and amygdalin. Prunasin has biological properties such as anti-inflammation, but plant extraction and chemical synthesis are impractical. In this study, we identified and characterized UGT85A47 from Japanese apricot. Further, UGT85A47 was utilized for prunasin microbial production. Full-length cDNA encoding UGT85A47 was isolated from Japanese apricot after 5'- and 3'-RACE. Recombinant UGT85A47 stoichiometrically catalyzed UDP-glucose consumption and synthesis of prunasin and UDP from mandelonitrile. Escherichia coli C41(DE3) cells expressing UGT85A47 produced prunasin (0.64 g/L) from racemic mandelonitrile and glucose. In addition, co-expression of genes encoding UDP-glucose biosynthetic enzymes (phosphoglucomutase and UTP-glucose 1-phosphate uridiltransferase) and polyphosphate kinase clearly improved prunasin production up to 2.3 g/L. These results showed that our whole-cell biocatalytic system is significantly more efficient than the existing prunasin production systems, such as chemical synthesis.
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Affiliation(s)
- Takuya Yamaguchi
- a Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , Toyama Japan.,b Asano Active Enzyme Molecule Project , JST ERATO , Toyama , Japan.,c Faculty of Life and Environmental Sciences , University of Tsukuba , Ibaraki , Japan
| | - Yasuhisa Asano
- a Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , Toyama Japan.,b Asano Active Enzyme Molecule Project , JST ERATO , Toyama , Japan
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Xu S, Xu X, Yuan S, Liu H, Liu M, Zhang Y, Zhang H, Gao Y, Lin R, Li X. Identification and Analysis of Amygdalin, Neoamygdalin and Amygdalin Amide in Different Processed Bitter Almonds by HPLC-ESI-MS/MS and HPLC-DAD. Molecules 2017; 22:molecules22091425. [PMID: 28867779 PMCID: PMC6151405 DOI: 10.3390/molecules22091425] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 08/25/2017] [Indexed: 11/16/2022] Open
Abstract
Processing is a traditional pharmacy technology based on traditional Chinese medicine theory. The traditional Chinese medicine (TCM) ingredients should be processed before being used as a medicine. Processed bitter almonds are widely used in the clinic in TCM for the treatment of cough and asthma. In this work the amygdalin profile of three producing areas in China was determined, with respect to three differently processed bitter almond products: raw, stir-fried and scalded. Identification of the compounds was done by using high performance liquid chromatography coupled to electrospray ionization mass spectrometry (HPLC-ESI-MS/MS). Results indicated that amygdalin, neoamygdalin and amygdalin amide were identified in the different processed bitter almonds. Meanwhile, amygdalin was used as a standard to calculate the quantification of amygdalin and the concentration ratio of neoamygdalin and total amygdalin by HPLC-DAD. The data suggested that composition of amygdalin isomers in bitter almonds was influenced by the processing method. It also gives a new understanding of the processing principle of bitter almonds. Moreover, the classification of different processed bitter almonds can be achieved on the basis of amygdalin isomers levels.
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Affiliation(s)
- Shuya Xu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Xinfang Xu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Shaoxiong Yuan
- Marketing Department, Leading Pharm Medical Technology, Inc., Beijing 100083, China.
| | - Huan Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Mengnan Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Ying Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Hui Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Yan Gao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Ruichao Lin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Xiangri Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
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21
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Acute health risks related to the presence of cyanogenic glycosides in raw apricot kernels and products derived from raw apricot kernels. EFSA J 2016. [DOI: 10.2903/j.efsa.2016.4424] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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22
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Juengel E, Thomas A, Rutz J, Makarevic J, Tsaur I, Nelson K, Haferkamp A, Blaheta RA. Amygdalin inhibits the growth of renal cell carcinoma cells in vitro. Int J Mol Med 2015; 37:526-32. [PMID: 26709398 DOI: 10.3892/ijmm.2015.2439] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/04/2015] [Indexed: 11/06/2022] Open
Abstract
Although amygdalin is used by many cancer patients as an antitumor agent, there is a lack of information on the efficacy and toxicity of this natural compound. In the present study, the inhibitory effect of amygdalin on the growth of renal cell carcinoma (RCC) cells was examined. Amygdalin (10 mg/ml) was applied to the RCC cell lines, Caki-1, KTC-26 and A498, for 24 h or 2 weeks. Untreated cells served as controls. Tumor cell growth and proliferation were determined using MTT and BrdU tests, and cell cycle phases were evaluated. Expression of the cell cycle activating proteins cdk1, cdk2, cdk4, cyclin A, cyclin B, cyclin D1 and D3 as well as of the cell cycle inhibiting proteins p19 and p27 was examined by western blot analysis. Surface expression of the differentiation markers E- and N-cadherin was also investigated. Functional blockade by siRNA was used to determine the impact of several proteins on tumor cell growth. Amygdalin treatment caused a significant reduction in RCC cell growth and proliferation. This effect was correlated with a reduced percentage of G2/M-phase RCC cells and an increased percentage of cells in the G0/1-phase (Caki-1 and A498) or cell cycle arrest in the S-phase (KTC-26). Furthermore, amygdalin induced a marked decrease in cell cycle activating proteins, in particular cdk1 and cyclin B. Functional blocking of cdk1 and cyclin B resulted in significantly diminished tumor cell growth in all three RCC cell lines. Aside from its inhibitory effects on growth, amygdalin also modulated the differentiation markers, E- and N-cadherin. Hence, exposing RCC cells to amygdalin inhibited cell cycle progression and tumor cell growth by impairing cdk1 and cyclin B expression. Moreover, we noted that amygdalin affected differentiation markers. Thus, we suggest that amygdalin exerted RCC antitumor effects in vitro.
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Affiliation(s)
- Eva Juengel
- Department of Urology, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
| | - Anita Thomas
- Department of Urology, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
| | - Jochen Rutz
- Department of Urology, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
| | - Jasmina Makarevic
- Department of Urology, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
| | - Igor Tsaur
- Department of Urology, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
| | - Karen Nelson
- Department of Vascular and Endovascular Surgery, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
| | - Axel Haferkamp
- Department of Urology, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
| | - Roman A Blaheta
- Department of Urology, Goethe-University Hospital, D-60590 Frankfurt am Main, Germany
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Spudeit DA, Breitbach ZS, Dolzan MD, Micke GA, Armstrong DW. Superficially Porous Particle Based Hydroxypropyl-β-cyclodextrin Stationary Phase for High-Efficiency Enantiomeric Separations. Chirality 2015; 27:788-94. [DOI: 10.1002/chir.22526] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 08/11/2015] [Accepted: 08/11/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel A. Spudeit
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis Brazil
| | - Zachary S. Breitbach
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
| | - Maressa D. Dolzan
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis Brazil
| | - Gustavo A. Micke
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis Brazil
| | - Daniel W. Armstrong
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
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