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Chittiboyina AG, Khan IA. Current issues in phytomedicine research - Conundrum on the chemistry of ashwagandha and its biological effects. J Ethnopharmacol 2024; 325:117871. [PMID: 38325672 DOI: 10.1016/j.jep.2024.117871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 02/09/2024]
Affiliation(s)
| | - Ikhlas A Khan
- National Center for Natural Products Research, United States; Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS, 38677, United States.
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Adams SJ, Avula B, Katragunta K, Saroja SG, Zhao J, Chittiboyina AG, Khan IA. Microscopy, HPTLC, and LC-DAD-Q-ToF validation of nut-based weight-loss dietary supplements, Aleurites moluccanus (candlenut) and Bertholletia excelsa (Brazil nut). Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2024:1-11. [PMID: 38557311 DOI: 10.1080/19440049.2024.2334309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
Aleurites moluccanus (candlenut) and Bertholletia excelsa (Brazil nut) are marketed as dietary supplements for weight loss. These dietary supplements have been found to sometimes be adulterated with toxic nuts/seeds from Cascabela thevetia, commonly known as yellow oleander or lucky nut. This study emphasizes the key identification parameters to differentiate the genuine and adulterated nuts. Samples were obtained from authenticated sources of the nuts and from commercial sources of dietary supplements. This study examined 38 samples, including voucher and commercial samples. All eight commercial candlenut dietary supplement samples were adulterated. Additionally, two samples sold as Brazil nuts were also found to be adulterated. Other nuts were screened for the presence of Cardiac Glycosides, but none were found to be positive. The presence of yellow oleander was confirmed in all commercial dietary supplement samples marketed as candlenut as well as in commercial samples of Brazil nut. This study provides simple key identification characters using micro-morphology and histochemical localization of cardiac glycosides in the commercial nuts, HPTLC fingerprints, and LC-DAD-Q-ToF analytical parameters to detect and identify adulteration in commercial products.
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Affiliation(s)
- Sebastian John Adams
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Seethapathy G Saroja
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Jianping Zhao
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, MS, USA
- Division of Pharmacognosy, Department of Bio Molecular Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
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Elbermawi A, Zulfiqar F, Pandey P, Chittiboyina AG, Khan IA, Ali Z. Phytochemical profiling of Striga asiatica; characterisation and anti-microbial assessment of the isolates. Nat Prod Res 2024:1-9. [PMID: 38449104 DOI: 10.1080/14786419.2024.2325588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 02/25/2024] [Indexed: 03/08/2024]
Abstract
One undescribed compound, striasinol (1), and twelve previously described compounds were isolated from the aerial parts of Striga asiatica. Structure elucidation of isolated compounds was achieved by the interpretation of 1D and 2D NMR and HRESIMS data. The absolute configuration (1S,5S) of 1 was ascertained based on GIAO NMR calculations, DP4+ probability analysis, and a comparison of the experimental and calculated specific rotation values. The isolated compounds were evaluated for their antimalarial action, and none was found to be effective against the chloroquine-sensitive (D6) or chloroquine-resistant (W2) strains of Plasmodium falciparum. The isolates were found non-toxic to the Vero cell line as well. Subsequent testing of these metabolites for antimicrobial activities against various bacterial and fungal strains (up to 20 µg/mL), revealed that compounds 6 (chryseriol) and 7 (apigenin) showed a reasonable activity towards methicillin-resistant Staphylococcus aureus ATCC 1708 (MRSA), with IC50 values of 5.81 and 3.60 μg/mL, respectively.
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Affiliation(s)
- Ahmed Elbermawi
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
| | - Fazila Zulfiqar
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
| | - Pankaj Pandey
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
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Abilkassymova A, Kozykeyeva R, Aldana-Mejía JA, John Adams S, Datkhayev U, Turgumbayeva A, Orynbassarova K, Saroja SG, Khan IA, Ross SA. Phytochemical and Micro-Morphological Characterization of Atraphaxis pyrifolia Bunge Growing in the Republic of Kazakhstan. Molecules 2024; 29:833. [PMID: 38398586 PMCID: PMC10891614 DOI: 10.3390/molecules29040833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/09/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Atraphaxis pyrifolia is a native species of Central Asia, known for curing several disorders. The species has little knowledges about its chemical composition and any information about its morphological characteristics despite its importance in traditional Asian medicine. This is one of the first approaches to the phytochemical and morphological characterization of this species. Micro-morphology was performed on the stem, and leaf parts of this plant to profile the morpho-anatomical characters using brightfield, fluorescence, polarized and scanning electron microscopy. Leaves were extracted with hexane and methanol. The hexane extract was analyzed using GC-MS analysis revealing the major presence of γ-sitosterol and nonacosane. The methanolic extract was submitted to Vacuum Liquid Chromatography and Sephadex LH-20. HPTLC, HR-ESI-MS and NMR techniques were used to identify the main compounds. Four glycosylated flavonoids were isolated: 8-O-acetyl-7-O-methyl-3-O-α-l-rhamnopyranosylgossypetin (Compound 1), and 7-O-methyl-3-O-α-l-rhamnopyranosylgossypetin (Compound 3), and two other compounds reported for the first time in the literature (Compounds 2 and 4). The findings presented herein furnish pertinent information essential for the identification and authentication of this medicinal plant. Such insights are invaluable for facilitating robust quality control measures and serve as a foundational framework for subsequent endeavours in metabolic, pharmacological, and taxonomical analyses.
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Affiliation(s)
- Alima Abilkassymova
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (A.A.); (A.T.)
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Raushan Kozykeyeva
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
- Department of Pharmacognosy, Faculty of Pharmacy, South Kazakhstan Medical Academy, Shymkent 160019, Kazakhstan;
| | - Jennyfer Andrea Aldana-Mejía
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Sebastian John Adams
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Ubaidilla Datkhayev
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
| | - Aknur Turgumbayeva
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (A.A.); (A.T.)
- School of Life Sciences, University of Westminster, London W1W 6UW, UK
| | - Kulpan Orynbassarova
- Department of Pharmacognosy, Faculty of Pharmacy, South Kazakhstan Medical Academy, Shymkent 160019, Kazakhstan;
| | - Seethapathy G. Saroja
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
- Department of Biomolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA
| | - Samir A. Ross
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
- Department of Biomolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA
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Cao L, Zhao J, Wang M, Khan IA, Li XC. Rapid preparation and proton NMR fingerprinting of polysaccharides from Radix Astragali. Carbohydr Res 2024; 536:109053. [PMID: 38310807 DOI: 10.1016/j.carres.2024.109053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 02/06/2024]
Abstract
The purity, content, and structure of the polysaccharides prepared from a specific medicinal plant are the fundamental basis to interpret the observed biological activities. An ultrafiltration-based method has been developed for rapid preparation of total and fractional polysaccharides from Radix Astragali in high yield and purity. This method involves extraction of plant material by hot water, treatment with Sevag reagent, and ultrafiltration using molecular weight cutoff concentrators. The prepared polysaccharides were assessed by 1H NMR spectroscopy, providing general purity, fingerprinting, and structural information. This method may be used to efficiently screen polysaccharides in plants.
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Affiliation(s)
- Liang Cao
- National Center for Natural Products Research, School of Pharmacy, The University of Miscsissippi, University, Mississippi, 38677, USA; Hunan Provincial Key Laboratory of Dong Medicine, Hunan University of Medicine, Huaihua, 418000, PR China
| | - Jianping Zhao
- National Center for Natural Products Research, School of Pharmacy, The University of Miscsissippi, University, Mississippi, 38677, USA
| | - Mei Wang
- National Center for Natural Products Research, School of Pharmacy, The University of Miscsissippi, University, Mississippi, 38677, USA; Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, Mississippi, 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Miscsissippi, University, Mississippi, 38677, USA; Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA
| | - Xing-Cong Li
- National Center for Natural Products Research, School of Pharmacy, The University of Miscsissippi, University, Mississippi, 38677, USA; Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA.
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González-Anduaga GM, Adams SJ, Dueñas-Deyá A, Pérez-Vásquez A, Avula B, Katragunta K, Khan IA, Navarrete A. Micro-Morphology characterization and HS-SPME-GC-MS Analysis of Floral parts of Quararibea funebris (La Llave) Vischer, traditionally known as Rosita de Cacao. Chem Biodivers 2024; 21:e202301709. [PMID: 38237114 DOI: 10.1002/cbdv.202301709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/18/2024] [Indexed: 02/02/2024]
Abstract
The flowers of Quararibea funebris are used to make a traditional drink called tejate, to which they add aroma, flavor and consistency. The study aims to profile the morphoanatomy of the floral parts of Q. funebris and analyze the changes in its volatile chemical composition during the drying process from 0 to 180 days by HS-SPME-GC-MS. The calyx, corolla, androecium, and gynoecium have distinct characteristics, such as non-glandular fused stellate trichomes, calcium oxalate crystals, and large secretory ducts. Histochemical localization reveals the presence of mucilage and total lipids in all parts of the flower. The chemical analysis of the essential oil, extracted from the flowers, showed that transfarnesol and geraniol were the most abundant compounds, with a yield of 0.04 %. HS-SPME analysis indicated that fresh flowers had a more complex composition than dried ones. In total, 31 components were identified. Nonanal and geranyl acetone were found to be distinctive components of dried flowers. Microscopic examination helps in identifying and authenticating raw materials and also reveals the presence of secretory ducts in all floral parts, which is a distinctive feature. The chemical profile of volatiles provides an important parameter for the evaluation of the quality of Rosita de Cacao raw materials.
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Affiliation(s)
- Gloria Melisa González-Anduaga
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510, Ciudad de México, México
| | - Sebastian John Adams
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, 38677, Oxford, MS, USA
| | - Alexander Dueñas-Deyá
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510, Ciudad de México, México
| | - Araceli Pérez-Vásquez
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510, Ciudad de México, México
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, 38677, Oxford, MS, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, 38677, Oxford, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, 38677, Oxford, MS, USA
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, 38677, Oxford, MS, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, 38677, Oxford, MS, USA
| | - Andrés Navarrete
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510, Ciudad de México, México
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, 38677, Oxford, MS, USA
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Radi MH, El-Shiekh RA, Hegab AM, Henry SR, Avula B, Katragunta K, Khan IA, El-Halawany AM, Abdel-Sattar E. LC-QToF chemical profiling of Euphorbia grantii Oliv. and its potential to inhibit LPS-induced lung inflammation in rats via the NF-κB, CY450P2E1, and P38 MAPK14 pathways. Inflammopharmacology 2024; 32:461-494. [PMID: 37572137 PMCID: PMC10907465 DOI: 10.1007/s10787-023-01298-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/12/2023] [Indexed: 08/14/2023]
Abstract
Acute lung injury (ALI) is a life-threatening syndrome that causes high morbidity and mortality worldwide. The aerial parts of Euphorbia grantii Oliv. were extracted with methanol to give a total methanolic extract (TME), which was further fractionated into dichloromethane (DCMF) and the remaining mother liquor (MLF) fractions. Biological guided anti-inflammatory assays in vitro revealed that the DCMF showed the highest activity (IC50 6.9 ± 0.2 μg/mL and 0.29 ± 0.01 μg/mL) compared to. celecoxib (IC50 of 88.0 ± 1 μg/mL and 0.30 ± 0.01 μg/mL) on COX-1 and COX-2, respectively. Additionally, anti-LOX activity was IC50 = 24.0 ± 2.5 μg/mL vs. zileuton with IC50 of 40.0 ± 0.5 μg/mL. LC-DAD-QToF analysis of TME and the active DCMF resulted in the tentative identification and characterization of 56 phytochemical compounds, where the diterpenes were the dominated metabolites. An LPS-induced inflammatory model of ALI (10 mg/kg i.p) was used to assess the anti-inflammatory potential of DCMF in vivo at dose of 200 mg/kg and 300 mg/kg compared to dexamethasone (5 mg/kg i.p). Our treatments significantly reduced the pro-inflammatory cytokines (TNF-α, IL-1, IL-6, and MPO), increased the activity of antioxidant enzymes (SOD, CAT, and GSH), decreased the activity of oxidative stress enzyme (MDA), and reduced the expression of inflammatory genes (p38.MAPK14 and CY450P2E1). The western blotting of NF-κB p65 in lung tissues was inhibited after orally administration of the DCMF. Histopathological study of the lung tissues, scoring, and immunohistochemistry of transforming growth factor-beta 1 (TGF-β1) were also assessed. In both dose regimens, DCMF of E. grantii prevented further lung damage and reduced the side effects of LPS on acute lung tissue injury.
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Affiliation(s)
- Mai Hussin Radi
- Herbal Department, Egyptian Drug Authority (EDA), Giza, Egypt
| | - Riham A El-Shiekh
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Amany Mohammed Hegab
- Developmental Pharmacology Department, Egyptian Drug Authority (EDA), Giza, Egypt
| | | | - Bharathi Avula
- School of Pharmacy, National Center for Natural Products Research, University of Mississippi, University, MS, 38677, USA
| | - Kumar Katragunta
- School of Pharmacy, National Center for Natural Products Research, University of Mississippi, University, MS, 38677, USA
| | - Ikhlas A Khan
- School of Pharmacy, National Center for Natural Products Research, University of Mississippi, University, MS, 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Ali M El-Halawany
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Essam Abdel-Sattar
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
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Parveen I, Wang M, Lee J, Zhao J, Zhu Y, Chittiboyina AG, Khan IA, Pan Z. Identification and Functional Characterization of Oxidosqualene Cyclases from Medicinal Plant Hoodia gordonii. Plants (Basel) 2024; 13:231. [PMID: 38256784 PMCID: PMC10818575 DOI: 10.3390/plants13020231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024]
Abstract
Oxidosqualene cyclases (OSCs) are the key enzymes accountable for the cyclization of 2,3-oxidosqualene to varied triterpenoids and phytosterols. Hoodia gordonii (from the family Apocynaceae), a native of the Kalahari deserts of South Africa, Namibia, and Botswana, is being sold as a prevalent herbal supplement for weight loss. The appetite suppressant properties are attributed to P57AS3, an oxypregnane steroidal glycoside. At the molecular level, the enzymes involved in the biosynthesis of triterpenes and phytosterols from H. gordonii have not been previously reported. In the current study, predicted transcripts potentially encoding oxidosqualene cyclases were recognized first by searching publicly available H. gordonii RNA-seq datasets. Two OSC-like sequences were selected for functional analysis. A monofunctional OSC, designated HgOSC1 which encodes lupeol synthase, and HgOSC2, a multifunctional cycloartenol synthase forming cycloartenol and other products, were observed through recombinant enzyme studies. These studies revealed that distinct OSCs exist for triterpene formation in H. gordonii and provided opportunities for the metabolic engineering of specific precursors in producing phytosterols in this plant species.
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Affiliation(s)
- Iffat Parveen
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Mei Wang
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, MS 38677, USA
| | - Joseph Lee
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Jianping Zhao
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Yingjie Zhu
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Amar G. Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
- Division Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Zhiqiang Pan
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, MS 38677, USA
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Ali A, Shah FM, Radwan MM, Elhendawy MA, Elsohly MA, Khan IA. Curcuma longa essential oils: toxicity and repellency against imported fire ants (Formicidae: Hymenoptera). J Med Entomol 2024; 61:191-200. [PMID: 37983140 DOI: 10.1093/jme/tjad151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/30/2023] [Accepted: 11/08/2023] [Indexed: 11/22/2023]
Abstract
Curcuma longa L. (Zingiberales: Zingiberaceae) leaf and rhizome essential oils were evaluated for their toxicity and repellency against invasive fire ants: red imported fire ants (RIFA), Solenopsis invicta Buren, black imported fire ants (BIFA), Solenopsis richteri Forel, and a reproductively functional hybrid (HIFA). Ar-turmerone was the major constituent of leaf (42.4%) and rhizome (40.4%) essential oils. A range of concentrations starting from 156 µg/g until the failure of treatment were used. Removal of treated sand in digging bioassay was used as a criterion for repellency. Leaf essential oil showed significantly higher repellency at concentrations of 19.5, 9.8, and 4.9 µg/g against RIFA, BIFA, and HIFA workers, respectively, as compared with control whereas rhizome essential oil was active at 39, 19.5, and 4.9 µg/g against BIFA, RIFA, and HIFA, respectively. Ar-turmerone exhibited repellency at 19.5 µg/g against HIFA workers whereas DEET (N,N-diethyl-meta-toluamide) failed at 39 µg/g. Leaf essential oil showed LC50 values of 85.8, 97.7, and 182.7µg/g against RIFA, BIFA and HIFA workers, whereas the rhizome essential oil had LC50 values of 127, 109.9, and 151.2 µg/g against these species, respectively. Ar-turmerone, tested only against HIFA, with LC50 value of 57.2 was the most active compound. Bifenthrin, a commonly used pyrethroid, with LC50 of 0.03, 0.32, and 0.018 µg/g was toxic against RIFA, BIFA, and HIFA workers, respectively. Both the essential oils and ar-turmerone showed toxicity and repellency against imported fire ants. Different formulations of these natural products will be tested to explore the use potential of these natural products under field conditions.
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Affiliation(s)
- Abbas Ali
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Farhan Mahmood Shah
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Mohamed M Radwan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Mostafa A Elhendawy
- Department of Chemistry and Biochemistry, The University of Mississippi, University, MS 38677, USA
- Department of Chemistry, Faculty of Agriculture, Damietta University, Damietta, Egypt
| | - Mahmoud A Elsohly
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
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Navarrete A, Balderas-López JL, Rosas-Canales JG, Tapia-Álvarez GR, Alfaro-Romero A, Aviles-Rosas VH, Rodríguez-Ramos F, Avula B, Khan IA. Flavones isolated from Pseudognaphalium liebmannii with tracheal smooth muscle relaxant properties. Nat Prod Res 2024:1-6. [PMID: 38189356 DOI: 10.1080/14786419.2023.2300402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 12/25/2023] [Indexed: 01/09/2024]
Abstract
The inflorescences of Pseudognaphalium liebmannii are used as folk medicine to treat various respiratory diseases. In this work, we report the isolation of seven known flavones: 5-hydroxy-3,7-dimethoxyflavone 1, 5,8-dihydroxy-3,7-dimethoxyflavone 2, 5,7-dihydroxy-3,8-dimethoxyflavone 3 (gnaphaliin A), 3,5-dihydroxy-7,8-dimethoxyflavone 4 (gnaphaliin B), 3,5-dihydroxy-6,7,8-trimethoxyflavone 5, 3,5,7-trimethoxyflavone 6 and 3-O-methylquercetin 7. All these flavones except 1 and 6 showed a relaxant effect on guinea pig tracheal preparation with EC50 between 69.91 ± 15.32 and 118.72 ± 7.06 µM. Aminophylline (EC50 = 122.03 ± 7.05 µM) was used as a relaxant reference drug. The active flavones shifted the concentration-response curves of forskolin and nitroprusside leftward, and significantly reduced the EC50 values of these drugs. Furthermore, these flavones dose-dependently inhibited phosphodiesterase (PDE) in an in vitro assay. This reveals that the inflorescences of P. liebmannii contain several flavones with relaxant effect on airway smooth muscle and with PDEs inhibition that contribute to supporting the anti-asthmatic traditional use.
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Affiliation(s)
- Andrés Navarrete
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, Ciudad de México, México
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
| | - José Luis Balderas-López
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, Ciudad de México, México
| | - José Guadalupe Rosas-Canales
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, Ciudad de México, México
| | - Gabriela Rubí Tapia-Álvarez
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, Ciudad de México, México
| | - Alejandro Alfaro-Romero
- Preparatoria SantaTeresa, Universidad LaSalle Campus Ciudad de México, Tlalpan, Ciudad de México, México
| | - Víctor Hugo Aviles-Rosas
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, Ciudad de México, México
| | - Fernando Rodríguez-Ramos
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México, Mexico
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of MS, University, MS, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
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Wang M, Lee J, Zhao J, Chatterjee S, Chittiboyina AG, Ali Z, Khan IA. Comprehensive quality assessment of peppermint oils and commercial products: An integrated approach involving conventional and chiral GC/MS coupled with chemometrics. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1232:123953. [PMID: 38101286 DOI: 10.1016/j.jchromb.2023.123953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/13/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023]
Abstract
Peppermint essential oil (EO) has a multitude of applications, such as a fragrance in cosmetics, personal care and industrial products, or as a flavoring ingredient in food and beverages. Despite its popularity and economic significance, peppermint EO is often adulterated to reduce production costs and to increase profits. Although the ISO standard for peppermint EO exists, detecting sophisticated forms of adulteration remains challenging.The current study used conventional and chiral GC/MS analysis of volatiles compounds, and chemometric techniques to evaluate an extensive set of authentic peppermint EO (n = 22) and commercial products (n = 36) purported to contain peppermint EO. Specifically, thirty-six terpenoids were examined in each sample and compared with the ISO standard. Fifty-three percent of the selected commercial products did not meet the ISO specifications and the ratio between menthone/isomenthone was proven to be a good indicator for authentication and adulteration detection. Chiral GC/MS was further employed to measure eight terpenoids: α-pinene, β-pinene, limonene, menthol, menthone, isomenthone, pulegone, and menthyl acetate. The enantiomeric compositions of 27 commercial products were above or below the norm measured from authentic peppermint EOs. Of the 27 samples, eight met the ISO standard. A sample class prediction (SCP) model based on partial least squares-discriminant analysis (PLS-DA) of conventional GC/MS data was constructed using authentic peppermint EOs and cornmint EOs. The model can distinguish the most common types of peppermint EOs (US, India, and US/India blend) and cornmint EOs sold in the US market. After construction, the SCP model was then used to analyze commercial samples. One sample, which passed both ISO specification and chiral analysis, was identified as outlier by the SCP model. Overall, the applicability of combining both conventional and chiral GC/MS along with chemometric tools has been successfully demonstrated to address the overall quality of peppermint EOs in commerce and may help combat sophisticated adulteration.
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Affiliation(s)
- Mei Wang
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, MS 38677, United States.
| | - Joseph Lee
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, United States
| | - Jianping Zhao
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, United States
| | - Shamba Chatterjee
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, United States
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, United States
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, United States; Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, United States.
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Fattahian M, Ghanadian M, Zolfaghari B, Abdeyazdan S, Saberi S, Zulfiqar F, Khan IA, Ali Z. Phytochemical study of Seriphidium khorassanicum (syn. Artemisia khorassanica) aerial parts: sesquiterpene lactones with anti-protozoal activity. Nat Prod Res 2024; 38:16-27. [PMID: 35856479 DOI: 10.1080/14786419.2022.2102630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 07/06/2022] [Indexed: 10/17/2022]
Abstract
Two new eudesmane-type sesquiterpene lactones, 1β,3α,8α-trihydroxy-11β,13-dihydroeudesma-4(15)-en-12,6α-olide (1) and 1β,4α,8α-trihydroxy-11β,13-dihydroeudesma-12,6α-olide (2), and an unprecedented elemane-type sesquiterpene lactone, 1β,2β,8α-trihydroxy-11β,13-dihydroelema-12,6α-olide (3) along with a known eudesmanolide artapshin (4) were isolated from Seriphidium khorassanicum. Structures were elucidated by NMR, HR-ESI-MS, and ECD spectral data analysis. The anti-protozoal activity was evaluated against Leishmania major promastigotes and amastigote-infected macrophages. They showed dose- and time-dependent activity against L. major amastigotes with IC50 values in the range of 4.9 to 25.3 μM being favourably far below their toxicity against normal murine macrophages with CC50 values ranging from 432.5 to 620.7 μM after 48 h of treatment. Compound 3 exhibited the strongest activity and the highest selectivity index (SI) with IC50 of 4.9 ± 0.6 μM and SI of 88.2 comparable with the standard drug, meglumine antimoniate (Glucantime), with IC50 and SI values of 15.5 ± 2.1 μM and 40.0, respectively.
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Affiliation(s)
- Maryam Fattahian
- School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mustafa Ghanadian
- School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
- Shahid Beheshti Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Zolfaghari
- School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sara Abdeyazdan
- School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sedigheh Saberi
- Department of Mycology and Parasitology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fazila Zulfiqar
- National Center for Natural Products Research, University of Mississippi, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, University of Mississippi, MS, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, University of Mississippi, MS, USA
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Farago PV, Camargo GDA, Mendes MB, Semianko BC, Camilo Junior A, Dias DT, Lara LSD, Novatski A, Mendes Nadal J, Manfron J, Majumdar S, Khan IA. Computational simulation on the study of Tacrolimus and its improved dermal retention using Poly(Ԑ-caprolactone) nanocapsules. J Mol Graph Model 2024; 126:108625. [PMID: 37722352 DOI: 10.1016/j.jmgm.2023.108625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/31/2023] [Accepted: 09/11/2023] [Indexed: 09/20/2023]
Abstract
Tacrolimus (TAC) is a drug from natural origin that can be used for topical application to control autoimmune skin diseases such as atopic dermatitis, psoriasis, and vitiligo. Computational simulation based on quantum mechanics theory by solving Schrödinger Equation for n-body problem may allow the theoretical calculation of drug geometry, charge distribution and dipole moment, electronic levels and molecular orbitals, electronic transitions, and vibrational transitions. Additionally, the development of novel nanotechnology-based delivery systems containing TAC can be an approach for reducing the dose applied topically, increasing dermal retention, and reducing the reported side effects due to the controlled release pattern. Firstly, this paper was devoted to obtaining the molecular, electronic, and vibrational data for TAC by using five semi-empirical (SE) methods and one Density Functional Theory (DFT) method in order to expand the knowledge about the drug properties by computational simulation. Then, this study was carried out to prepare TAC-loaded poly(ԑ-caprolactone) nanocapsules by interfacial polymer deposition following solvent displacement and investigate the in vitro drug permeation using the Franz diffusion cell and the photoacoustic spectroscopy. Computational simulations were compared in the three schemes SE/SE, SE/DFT, and DFT/DFT, where the first method represented the procedure used for geometry optimization and the second one was performed to extract electronic and vibrational properties. Computational data showed correspondence with TAC geometry description and electronic properties, with few differences in HOMO - LUMO gap (Δ) and dipole values. The SE/DFT and DFT/DFT methods presented a better drug description for the UV-Vis, Infrared, and Raman spectra with low deviation from experimental values. Franz cell model demonstrated that TAC was more delivered across the Strat-M® membrane from the solution than the drug-loaded poly(ԑ-caprolactone) nanocapsules. Photoacoustic spectroscopy assay revealed that these nanocapsules remained more retained into the Strat-M® membranes, which is desirable for the topical application.
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Affiliation(s)
- Paulo Vitor Farago
- Laboratory of Drug Development and Industrial Pharmacy, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil; National Center for Natural Products Research, School of Pharmacy, University of Mississippi, MS, 38677, USA.
| | - Guilherme Dos Anjos Camargo
- Laboratory of Drug Development and Industrial Pharmacy, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil.
| | - Matheus Benedito Mendes
- Postgraduate Program in Science (Physics), Department of Physics, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil.
| | - Betina Christi Semianko
- Academic Department of Physics, Federal University of Technology-Parana, Ponta Grossa, PR, 84017-220, Brazil.
| | - Alexandre Camilo Junior
- Postgraduate Program in Science (Physics), Department of Physics, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil.
| | - Daniele Toniolo Dias
- Academic Department of Physics, Federal University of Technology-Parana, Ponta Grossa, PR, 84017-220, Brazil.
| | - Lucas Stori de Lara
- Postgraduate Program in Science (Physics), Department of Physics, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil.
| | - Andressa Novatski
- Postgraduate Program in Science (Physics), Department of Physics, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil.
| | - Jessica Mendes Nadal
- Laboratory of Drug Development and Industrial Pharmacy, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil.
| | - Jane Manfron
- Laboratory of Drug Development and Industrial Pharmacy, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, PR, 84030-900, Brazil; National Center for Natural Products Research, School of Pharmacy, University of Mississippi, MS, 38677, USA.
| | - Soumyajit Majumdar
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, MS, 38677, USA.
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, MS, 38677, USA.
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14
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Neal WM, Pandey P, Khan SI, Khan IA, Chittiboyina AG. Machine learning and traditional QSAR modeling methods: a case study of known PXR activators. J Biomol Struct Dyn 2024; 42:903-917. [PMID: 37059719 DOI: 10.1080/07391102.2023.2196701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 03/22/2023] [Indexed: 04/16/2023]
Abstract
Pregnane X receptor (PXR), extensively expressed in human tissues related to digestion and metabolism, is responsible for recognizing and detoxifying diverse xenobiotics encountered by humans. To comprehend the promiscuous nature of PXR and its ability to bind a variety of ligands, computational approaches, viz., quantitative structure-activity relationship (QSAR) models, aid in the rapid dereplication of potential toxicological agents and mitigate the number of animals used to establish a meaningful regulatory decision. Recent advancements in machine learning techniques accommodating larger datasets are expected to aid in developing effective predictive models for complex mixtures (viz., dietary supplements) before undertaking in-depth experiments. Five hundred structurally diverse PXR ligands were used to develop traditional two-dimensional (2D) QSAR, machine-learning-based 2D-QSAR, field-based three-dimensional (3D) QSAR, and machine-learning-based 3D-QSAR models to establish the utility of predictive machine learning methods. Additionally, the applicability domain of the agonists was established to ensure the generation of robust QSAR models. A prediction set of dietary PXR agonists was used to externally-validate generated QSAR models. QSAR data analysis revealed that machine-learning 3D-QSAR techniques were more accurate in predicting the activity of external terpenes with an external validation squared correlation coefficient (R2) of 0.70 versus an R2 of 0.52 in machine-learning 2D-QSAR. Additionally, a visual summary of the binding pocket of PXR was assembled from the field 3D-QSAR models. By developing multiple QSAR models in this study, a robust groundwork for assessing PXR agonism from various chemical backbones has been established in anticipation of the identification of potential causative agents in complex mixtures.
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Affiliation(s)
- William M Neal
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Pankaj Pandey
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Shabana I Khan
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Ikhlas A Khan
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Amar G Chittiboyina
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
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Wilson FD, Mir TM, Ashfaq MK, Zhang J, Pugh ND, Khan IA, Pace LW, Hoerr FJ. Histomorphometric lung density evaluation of Immulina treatment using a murine influenza pneumonia model. Int J Exp Pathol 2023; 104:283-291. [PMID: 37750190 PMCID: PMC10652700 DOI: 10.1111/iep.12493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 09/27/2023] Open
Abstract
Histomorphometric lung density measurements were used to evaluate the effects of Immulina on mouse pneumonia. Mice were intra-nasally exposed to H1N1 influenza virus at a dose of 5 × 104 PFU/50 μL/mouse. Lung density was measured using the NIH ImageJ software program. Density values were compared to semiquantitative pneumonia severity scores. Lung photomicrographs were evaluated at 25-×, 40-× and 400-× magnification. The study included viral inoculated controls (IC) and non-inoculated controls (NC) and mice either treated or not treated with Immulina. Three doses of Immulina were included (25, 50 or 100 mg/kg) and administered using 3 protocols: prophylactic treatment (P), prodromal treatment (PD) and therapeutic treatment (TH) (note that in most of the evaluations of the data for the three treatment protocols were combined). Groups of mice were evaluated on days 3, 5, 7, 10 and 15 following exposure. The occurrence of "digital pneumonia" (DP) was defined as a density measurement above the 95% confidence limit of the corresponding NC values. A significant reduction in the occurrence of DP with Immulina treatment at the higher doses compared to IC was seen as early as day 3 and persisted up to day 15. There were also statistically significant dose-variable reductions in lung density in response to Immulina. The study suggests early administration of Immulina (P or PD protocols) may enhance resistance against influenza-induced viral pneumonia. A moderate correlation between pneumonia severity scores and lung density was observed for the 25-× and 40-× images (R = 0.56 and 0.53 respectively), and a strong correlation (R = 0.68) for 400-× images.
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Affiliation(s)
- Floyd D. Wilson
- Mississippi Veterinary Research and Diagnostic LaboratoryMississippi State UniversityPearlMississippiUSA
| | - Tahir M. Mir
- National Center for Natural Products Research, School of Pharmacy, Research Institute of Pharmaceutical SciencesUniversity of MississippiUniversityMississippiUSA
| | - Mohammad K. Ashfaq
- National Center for Natural Products Research, School of Pharmacy, Research Institute of Pharmaceutical SciencesUniversity of MississippiUniversityMississippiUSA
| | - Jin Zhang
- National Center for Natural Products Research, School of Pharmacy, Research Institute of Pharmaceutical SciencesUniversity of MississippiUniversityMississippiUSA
| | - Nirmal D. Pugh
- National Center for Natural Products Research, School of Pharmacy, Research Institute of Pharmaceutical SciencesUniversity of MississippiUniversityMississippiUSA
| | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, Research Institute of Pharmaceutical SciencesUniversity of MississippiUniversityMississippiUSA
- Department of BioMolecular Sciences, School of PharmacyUniversity of MississippiUniversityMississippiUSA
| | - Lanny W. Pace
- Mississippi Veterinary Research and Diagnostic LaboratoryMississippi State UniversityPearlMississippiUSA
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16
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Li Y, Ji N, Wang M, Pugh ND, Khan IA, Tan C. Immulina as an Immunostimulatory Supplement: Formulation and Pharmacological Studies. Planta Med 2023; 89:1483-1492. [PMID: 37647915 PMCID: PMC10993770 DOI: 10.1055/a-2156-4653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Immulina is a commercially available extract of Arthrospira platensis enriched with bacterial lipoproteins that acts as a potent Toll-like receptor 2 agonist. However, the immunostimulatory effect of Immulina is not well understood in vivo. Here, to devise an Immulina formulation suitable for in vivo oral gavage dosing, Immulina nanosuspension was prepared and freeze-dried to yield lyophilized nano-Immulina, which had an average particle size of around 300 nm and fully retained the bioactivity as a Toll-like receptor 2 agonist. Compared to the regular Immulina powder, lyophilized nano-Immulina notably accelerated the dissolution in aqueous media. Immulina nanosuspension was found to stimulate the production of proinflammatory cytokines in murine bone marrow-derived dendritic cells and macrophages. The immune response to Immulina was investigated in healthy mice by longitudinally monitoring the phagocytic activity of circulating neutrophils as a surrogate marker. Following daily oral ingestion of Immulina nanosuspension (10 mg/mouse/day), the phagocytic activity of circulating neutrophils was significantly elevated, suggesting an important mechanism for Immulina to enhance innate immunity.
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Affiliation(s)
- Yusheng Li
- Department of Pharmaceutics and Drug Delivery, University of Mississippi, University, Mississippi, USA
| | - Nan Ji
- Department of Pharmaceutics and Drug Delivery, University of Mississippi, University, Mississippi, USA
| | - Minia Wang
- Department of Pharmaceutics and Drug Delivery, University of Mississippi, University, Mississippi, USA
| | - Nirmal D. Pugh
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, University of Mississippi, University, Mississippi, USA
| | - Ikhlas A. Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, University of Mississippi, University, Mississippi, USA
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi, USA
| | - Chalet Tan
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, Tennessee, USA
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Chae HS, Cantrell CL, Khan IA, Jarret RL, Khan SI. Capsiate-Rich Fraction of Capsicum annuum Induces Muscular Glucose Uptake, Ameliorates Rosiglitazone-Induced Adipogenesis, and Exhibits Activation of NRs Regulating Multiple Signaling Pathways. J Agric Food Chem 2023; 71:18395-18404. [PMID: 37972244 DOI: 10.1021/acs.jafc.3c06148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Capsiate is a key ingredient in the fruits of a nonpungent cultivar of Capsicum annuum. We investigated the effects of a C. annuum extract (CE) and a capsiate-rich fraction of CE (CR) on nuclear receptors involved in multiple signaling pathways, glucose uptake, and adipogenesis in comparison to pure capsiate (Ca). Similar to the effect of Ca (100 μM), CE (500 μg/mL) and CR (100 μg/mL) caused the activation of PPARα and PPARγ (>3-fold), while CR also activated LXR and NRF2 (>2 fold). CR (200 μg/mL) and Ca (100 μM) decreased lipid accumulation (22.6 ± 14.1 and 49.7 ± 7.3%, respectively) in adipocytes and increased glucose uptake (44.7 ± 6.2 and 30.1 ± 12.2%, respectively) in muscle cells and inhibited the adipogenic effect induced by rosiglitazone by 41.2 ± 5.6 and 13.9 ± 4.3%, respectively. This is the first report to reveal the agonistic action of CR and Ca on multiple nuclear receptors along with their enhanced glucose uptake and antiadipogenic effects. The results indicate the potential utility of the capsiate-rich fraction of C. annuum in alleviating the symptoms of metabolic syndrome and in preventing the undesired adipogenic effects of full PPARγ agonists such as rosiglitazone.
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Affiliation(s)
- Hee-Sung Chae
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Charles L Cantrell
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, Mississippi 38677, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Robert L Jarret
- Plant Genetic Resources Unit, USDA-ARS, 1109 Experiment Street, Griffin, Georgia 30223, United States
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
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Monteiro LM, Klider LM, Marques AAM, Farago PV, Emiliano J, Souza RIC, dos Santos AC, dos Santos VLP, Wang M, Cassemiro NS, Silva DB, Khan IA, Gasparotto Junior A, Manfron J. The Cardiorenal Effects of Piper amalago Are Mediated by the Nitric Oxide/Cyclic Guanosine Monophosphate Pathway and the Voltage-Dependent Potassium Channels. Pharmaceuticals (Basel) 2023; 16:1630. [PMID: 38004495 PMCID: PMC10675251 DOI: 10.3390/ph16111630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Piper amalago L. is used in Brazilian traditional medicine to treat inflammation, chest pain, and anxiety. This study aimed to investigate the safety and the renal and cardiovascular effects of the volatile oil (VO) and the aqueous (AE) and hydroalcoholic (HE) extracts from P. amalago. The gas chromatography-mass spectrometry analyses identified 47 compounds in the VO, with β-cyclogermacrene, spathulenol, β-phellandrene, and α-pinene standing out. Among the 47 compounds also found in AE and HE by liquid chromatography-mass spectrometry, glycosylated flavones, organic acids, amino acids, and amides were highlighted. Some examples of these compounds are methoxy-methylenedioxy cis-cinnamoyl pyrrolidine, methoxy-methylenedioxy trans-cinnamoyl pyrrolidine, and cyclobutene-2,4-bis-(1,3-benzodioxol-5-methoxy-6-yl)-1,3-dicarboxapyrrolidide. The acute toxicity experiments were conducted on female rats (n = 5). The cardiorenal assays (n = 8) and evaluations of vasodilatory effects on the mesenteric vascular bed (n = 5) were conducted on male rats. In either extract or VO, there were no mortality or changes in relative weights or histopathological analysis of the organs. Urinary volume and renal electrolyte excretion were elevated significantly during repeated dose 7-day treatment with different preparations from P. amalago. None of the preparations induced hypotension or changes in cardiac electrical activity. Only HE promoted significant vasodilatory effects in rats' isolated mesenteric vascular beds. These effects were completely abolished in the presence of L-NAME plus 4-aminopyridine. Therefore, P. amalago leaves are safe and present diuretic activity after acute and repeated dose administration over 7 days. Moreover, the HE induced significant vasodilator response in rats' mesenteric vascular beds by NO/cGMP pathway and voltage-dependent K+ channels activation.
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Affiliation(s)
- Luciane M. Monteiro
- Graduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa 84030-900, PR, Brazil; (L.M.M.); (L.M.K.); (P.V.F.); (J.M.)
| | - Lislaine M. Klider
- Graduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa 84030-900, PR, Brazil; (L.M.M.); (L.M.K.); (P.V.F.); (J.M.)
| | - Aline A. M. Marques
- Laboratory of Cardiovascular Pharmacology (LaFaC), Faculty of Health Sciences, Federal University of Grande Dourados, Dourados 79825-070, MS, Brazil; (A.A.M.M.); (R.I.C.S.); (A.C.d.S.)
| | - Paulo V. Farago
- Graduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa 84030-900, PR, Brazil; (L.M.M.); (L.M.K.); (P.V.F.); (J.M.)
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA;
| | - Janaína Emiliano
- Laboratory of Natural Products and Mass Spectrometry (LaPNEM), Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), University of Mato Grosso do Sul (UFMS), Campo Grande 79080-190, MS, Brazil; (J.E.); (N.S.C.); (D.B.S.)
| | - Roosevelt I. C. Souza
- Laboratory of Cardiovascular Pharmacology (LaFaC), Faculty of Health Sciences, Federal University of Grande Dourados, Dourados 79825-070, MS, Brazil; (A.A.M.M.); (R.I.C.S.); (A.C.d.S.)
| | - Ariany C. dos Santos
- Laboratory of Cardiovascular Pharmacology (LaFaC), Faculty of Health Sciences, Federal University of Grande Dourados, Dourados 79825-070, MS, Brazil; (A.A.M.M.); (R.I.C.S.); (A.C.d.S.)
| | - Vera L. P. dos Santos
- School of Health, Environment, Sustainability and Humanity, Uninter International University Center, Curitiba 80020-110, PR, Brazil;
| | - Mei Wang
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University of Mississippi, University, MS 38677, USA;
| | - Nadla S. Cassemiro
- Laboratory of Natural Products and Mass Spectrometry (LaPNEM), Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), University of Mato Grosso do Sul (UFMS), Campo Grande 79080-190, MS, Brazil; (J.E.); (N.S.C.); (D.B.S.)
| | - Denise B. Silva
- Laboratory of Natural Products and Mass Spectrometry (LaPNEM), Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), University of Mato Grosso do Sul (UFMS), Campo Grande 79080-190, MS, Brazil; (J.E.); (N.S.C.); (D.B.S.)
| | - Ikhlas A. Khan
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA;
| | - Arquimedes Gasparotto Junior
- Laboratory of Cardiovascular Pharmacology (LaFaC), Faculty of Health Sciences, Federal University of Grande Dourados, Dourados 79825-070, MS, Brazil; (A.A.M.M.); (R.I.C.S.); (A.C.d.S.)
| | - Jane Manfron
- Graduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa 84030-900, PR, Brazil; (L.M.M.); (L.M.K.); (P.V.F.); (J.M.)
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA;
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Ali A, Shah FM, Manfron J, Monteiro LM, de Almeida VP, Raman V, Khan IA. Baccharis Species Essential Oils: Repellency and Toxicity against Yellow Fever Mosquitoes and Imported Fire Ants. J Xenobiot 2023; 13:641-652. [PMID: 37987442 PMCID: PMC10660731 DOI: 10.3390/jox13040041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/22/2023] Open
Abstract
Essential oils from five Baccharis species were screened for their toxicity and biting deterrence/repellency against yellow fever mosquito, Aedes aegypti (L.), and imported fire ants, including Solenopsis invicta Buren (RIFA), Solenopsis richteri Forel (BIFA) and their hybrids (HIFA). Baccharis microdonta DC. and B. punctulata DC. at 10 µg/cm2 showed biting deterrence similar to DEET, N, N-diethyl-meta-toluamide at 25 nmol/cm2, whereas the repellency of B. pauciflosculosa DC., B. sphenophylla Dusén ex Malme and B. reticularioides Deble & A.S. Oliveira essential oils was significantly lower than DEET against mosquitoes. Two major compounds from the active essential oils, kongol and spathulenol, also exhibited biting deterrence similar to DEET against mosquitoes. The highest toxicity exhibited against mosquitoes was by Baccharis punctulata essential oil (LC50 = 20.4 ppm), followed by B. pauciflosculosa (LC50 = 31.9 ppm), B. sphenophylla (LC50 = 30.8 ppm), B. microdonta (LC50 = 28.6 ppm), kongol (LC50 = 32.3 ppm), spathulenol (LC50 = 48.7 ppm) and B. reticularioides essential oil (LC50 = 84.4 ppm). Baccharis microdonta essential oil showed repellency against RIFA, BIFA and HIFA at 4.9, 4.9 and 39 µg/g, respectively. Baccharis microdonta essential oil also showed toxicity with LC50 of 78.9, 97.5 and 136.5 µg/g against RIFA, BIFA and HIFA, respectively, at 24 h post treatment.
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Affiliation(s)
- Abbas Ali
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (F.M.S.); (I.A.K.)
| | - Farhan Mahmood Shah
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (F.M.S.); (I.A.K.)
| | - Jane Manfron
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa 84030-900, Brazil; (J.M.); (L.M.M.); (V.P.d.A.)
| | - Luciane M. Monteiro
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa 84030-900, Brazil; (J.M.); (L.M.M.); (V.P.d.A.)
| | - Valter P. de Almeida
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa 84030-900, Brazil; (J.M.); (L.M.M.); (V.P.d.A.)
| | - Vijayasankar Raman
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (F.M.S.); (I.A.K.)
| | - Ikhlas A. Khan
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (F.M.S.); (I.A.K.)
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Elbermawi A, Zulfiqar F, Khan IA, Ali Z. Fatimanols Y and Z: two neo-clerodane diterpenoids from Teucrium yemense. RSC Adv 2023; 13:30264-30268. [PMID: 37868827 PMCID: PMC10587887 DOI: 10.1039/d3ra06083g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 10/10/2023] [Indexed: 10/24/2023] Open
Abstract
Teucrium yemense (Defl.), a medicinal plant, grows in Yemen and Saudi Arabia and is also referred to as Reehal Fatima. The plant has a long history of use in these regions for the treatment of diabetes, rheumatism, and renal conditions. Phytochemical investigation of the aerial parts of T. yemense yielded two previously undescribed neo-clerodane diterpenoids, namely fatimanols Y and Z (1 and 2) along with the known teulepicephin (3), 8-acetylharpagide (4) and teucardosid (5). Structure elucidation was accomplished from their 1D and 2D NMR, ECD, and MS characteristics as well as by comparing them to related reported compounds. The new molecules expand understanding of secondary metabolites of this genus. Compounds 1-5 did not show antimicrobial activity against various bacterial and fungal strains.
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Affiliation(s)
- Ahmed Elbermawi
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University Mansoura 35516 Egypt +20 10-0481-1533
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University MS 38677 USA
| | - Fazila Zulfiqar
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University MS 38677 USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University MS 38677 USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University MS 38677 USA
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21
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Haron MH, Zhang J, Chittiboyina AG, Khan IA, Pugh ND. Validation of a Toll-like Receptor (TLR)2/TLR1 Activation Assay for Biological Standardization of Arthrospira/ Limnospira Immune-Enhancing Potency. J Diet Suppl 2023; 21:281-293. [PMID: 37794652 PMCID: PMC10984802 DOI: 10.1080/19390211.2023.2263566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Arthrospira/Limnospira is a popular botanical dietary supplement throughout the world and has been consumed as a food product for hundreds of years. Ongoing efforts from our research group are focused on evaluating the utility of a Limnospira-derived oral supplement (Immulina) in promoting resilience against influenza viral infection. Like other botanical extracts, Immulina is inherently a complex matrix with variation in the levels of its chemical constituents. Therefore, to ensure therapeutic consistency for future scientific research and clinical studies, we are developing standardization technology using a bioassay and chemical markers. Braun-type lipoproteins, a class of macromolecules that activate the Toll-like receptor (TLR)2/TLR1 signaling pathway, have been identified as a major active component within Immulina. Based on the mechanism of action of the Braun-type lipoproteins, an in vitro bioassay was established using the HEK-Blue hTLR2/TLR1 cell line to quantitate the immune-enhancing potency of Immulina. The objective of the current research was to validate that bioassay for Immulina activity quantification using the U.S. FDA guidance document for botanical drug development and U.S. Pharmacopeia recommendations. System suitability, reference standards and defining potency units were established. Validation of performance parameters included precision, specificity, accuracy, linearity, and range. Validating this bioassay for Immulina activity provides a tool for ensuring product consistency and quantifying the potency of this botanical for use in future research as well as material in the consumer market.
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Affiliation(s)
- Mona H. Haron
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, United States
| | - Jin Zhang
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, United States
| | - Amar G. Chittiboyina
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, United States
| | - Ikhlas A. Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, United States
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, United States
| | - Nirmal D. Pugh
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, United States
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22
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Antunes KA, Monteiro LM, Almeida VP, Monchak IT, Perera WH, Heiden G, Guarino ESG, Santos VLP, Farago PV, Raman V, Khan IA, Manfron J. Authentication and Quality Control of the Brazilian Traditional Herb "Espinheira-Santa" (Monteverdia ilicifolia) by Morpho-Anatomy and Microscopy. Microsc Microanal 2023; 29:1809-1821. [PMID: 37639710 DOI: 10.1093/micmic/ozad098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/04/2023] [Accepted: 08/14/2023] [Indexed: 08/31/2023]
Abstract
The leaves of Monteverdia ilicifolia (syn. Maytenus ilicifolia), commonly called espinheira-santa, are widely used in South American traditional medicines to treat gastritis and ulcers. Several products labeled as espinheira-santa are sold as dietary supplements in retail stores and via e-commerce. Many different species with similar leaf morphology are often mistaken for Monteverdia ilicifolia and used as espinheira-santa, including Monteverdia aquifolia (Celastraceae), Citronella gongonha (Cardiopteridaceae), Jodina rhombifolia (Santalaceae), Sorocea bonplandii (Moraceae), and Zollernia ilicifolia (Fabaceae). This study aimed to characterize M. ilicifolia and distinguish it from adulterants using morphological and microscopic techniques. In addition, foreign matter and powder characteristics of botanical materials sold as "espinheira-santa" were analyzed. The morphoanatomical studies of the leaves and stems of M. ilicifolia and its five adulterant species have revealed noteworthy features that can help species identification and quality control of commercial espinheira-santa. This study showed that many commercial espinheira-santa materials were adulterated and of inferior quality.
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Affiliation(s)
- Kevin A Antunes
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, 4748 Carlos Cavalcanti Avenue, Ponta Grossa, PR 84030-900, Brazil
| | - Luciane M Monteiro
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, 4748 Carlos Cavalcanti Avenue, Ponta Grossa, PR 84030-900, Brazil
| | - Valter P Almeida
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, 4748 Carlos Cavalcanti Avenue, Ponta Grossa, PR 84030-900, Brazil
| | - Irailson T Monchak
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, 4748 Carlos Cavalcanti Avenue, Ponta Grossa, PR 84030-900, Brazil
| | - Wilmer H Perera
- CAMAG Scientific, Inc., 515 Cornelius Harnett Dr, Wilmington, NC 28401, USA
| | - Gustavo Heiden
- Embrapa Clima Temperado, Pelotas, BR-392, km 78 Monte Bonito, RS 96010-971, Brazil
| | | | - Vera L P Santos
- Escola Superior de Saúde, Biociências, Meio Ambiente e Humanidades, Centro Universitário Internacional Uninter, Curitiba, PR 80410-150, Brazil
| | - Paulo V Farago
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, 4748 Carlos Cavalcanti Avenue, Ponta Grossa, PR 84030-900, Brazil
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, P.O. Box 1848, MS 38677, USA
| | - Vijayasankar Raman
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, P.O. Box 1848, MS 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, P.O. Box 1848, MS 38677, USA
| | - Jane Manfron
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, 4748 Carlos Cavalcanti Avenue, Ponta Grossa, PR 84030-900, Brazil
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, P.O. Box 1848, MS 38677, USA
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23
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Paudel P, Shah FM, Guddeti DK, Ali A, Chen J, Khan IA, Li XC. Repellency of Carvacrol, Thymol, and Their Acetates against Imported Fire Ants. Insects 2023; 14:790. [PMID: 37887802 PMCID: PMC10607101 DOI: 10.3390/insects14100790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/18/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023]
Abstract
In the United States, imported fire ants are commonly referred to as red imported fire ants (Solenopsis invicta Buren), black imported fire ants (S. richteri Forel), and hybrid imported fire ants (S. invicta × S. richteri). They are significant pests, and their control heavily relies on synthetic insecticides. The extensive use of insecticides has led to public concern about their potential negative effects on human health and the well-being of wildlife and the environment. As an alternative, plant-derived natural compounds, particularly essential oils (EOs) and their main constituents, show promise as safe and environmentally friendly products for controlling fire ants. Repellants are useful in managing fire ants, and plant-derived natural repellants may serve as a safer and more environmentally friendly option. This study investigates the repellency of EO-derived compounds carvacrol, thymol, and their acetates against imported fire ant workers. The results revealed that carvacrol, a GRAS compound (Generally Recognized As Safe), was the most potent repellent against S. invicta, S. richteri, and their hybrid, with minimum repellent effective doses (MREDs) of 0.98 µg/g, 7.80 µg/g, and 0.98 µg/g, respectively. Thymol also exhibited strong repellency, with MREDs of 31.25 µg/g, 31.25 µg/g, and 7.8 µg/g, respectively. Furthermore, thyme-red essential oil, characterized by a thymol chemotype containing 48.8% thymol and 5.1% carvacrol, was found to effectively repel the hybrid ants with an MRED of 15.6 µg/g. In contrast, thyme essential oil, characterized by a linalool chemotype lacking thymol and carvacrol, did not exhibit any repellent effect, even at the highest tested dose of 125 µg/g. This study provides the first evidence of the potent repellency of carvacrol and thymol against imported fire ant workers, indicating their potential as promising repellents for fire ant control.
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Affiliation(s)
- Pradeep Paudel
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (P.P.); (F.M.S.); (D.K.G.); (A.A.); (I.A.K.)
| | - Farhan Mahmood Shah
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (P.P.); (F.M.S.); (D.K.G.); (A.A.); (I.A.K.)
| | - Dileep Kumar Guddeti
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (P.P.); (F.M.S.); (D.K.G.); (A.A.); (I.A.K.)
| | - Abbas Ali
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (P.P.); (F.M.S.); (D.K.G.); (A.A.); (I.A.K.)
| | - Jian Chen
- Biological Control of Pests Research Unit, USDA-ARS, Stoneville, MS 38776, USA;
| | - Ikhlas A. Khan
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (P.P.); (F.M.S.); (D.K.G.); (A.A.); (I.A.K.)
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Xing-Cong Li
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA; (P.P.); (F.M.S.); (D.K.G.); (A.A.); (I.A.K.)
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
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Wang M, Zhao J, Avula B, Lee J, Upton R, Khan IA. Chemical characterization and quantitative determination of flavonoids and phenolic acids in yerba santa (Eriodictyon spp.) using UHPLC/DAD/Q-ToF. J Pharm Biomed Anal 2023; 234:115570. [PMID: 37473504 DOI: 10.1016/j.jpba.2023.115570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/01/2023] [Accepted: 07/09/2023] [Indexed: 07/22/2023]
Abstract
Eriodictyon species, commonly known as yerba santa, are plants native to the Southwestern United States and northern Mexico. The plants are known for their medicinal properties and have been used by indigenous people for centuries to treat various ailments, in particular, respiratory conditions. Despite a long history of traditional use, many of the species have never been fully chemically characterized, and the constituent range of the species has not been comprehensively reported. In an effort to establish a quality control and chemical characterization method, an extensive set of Eriodictyon species samples including E. californicum (n = 85), E. angustifolium (n = 8), E. trichocalyx (n = 5), E. crassifolium (n = 9), E. tomentosum (n = 2), E. traskiae (n = 1), and E. capitatum (n = 1) were investigated. Fourteen compounds comprised of flavonoids and phenolic acids were quantified utilizing an UHPLC/DAD method. The results from the method validation demonstrated excellent linearity (R2 > 0.99) and sensitivity as evidenced by LOD (0.01-0.1 µg/mL) and LOQ (0.05-0.2 µg/mL). Likewise, the method was found to be precise (RSD < 2.78%) with recoveries between 88.9% and 103.2%. Furthermore, by using UHPLC/ESI/Q-ToF data and protonated, deprotonated, and adduct and fragment ions in positive and negative ion modes, we were able to identify 53 compounds in yerba santa plant samples. To the best of our knowledge, this work encapsulates the most comprehensive data set currently available for the chemical characterization and quantification of the primary constituents in Eriodictyon species. Additionally, results of this study also demonstrated the applicability of the developed method for quality assessment of raw material and commercial herbal products containing different Eriodictyon species.
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Affiliation(s)
- Mei Wang
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, MS 38677, USA.
| | - Jianping Zhao
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Joseph Lee
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Roy Upton
- American Herbal Pharmacopoeia, Scotts Valley, CA 95066, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA; Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Wang YH, Mondal G, Stevens N, Bascoul C, Osguthorpe RJ, Khan IA, Yates CR. Development of a Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) Method for Characterizing Linalool Oral Pharmacokinetics in Humans. Molecules 2023; 28:6457. [PMID: 37764231 PMCID: PMC10538094 DOI: 10.3390/molecules28186457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 08/10/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023] Open
Abstract
Lavender (Lavandula angustifolia Miller or Lavandula officinalis Chaix) is an ethnopharmacological plant commonly known as English lavender. Linalool and linalyl acetate are putative phytoactives in lavender essential oil (LEO) derived from the flower heads. LEO has been used in aroma or massage therapy to reduce sleep disturbance and to mitigate anxiety. Recently, an oral LEO formulation was administered in human clinical trials designed to ascertain its anxiolytic effect. However, human pharmacokinetics and an LC-MS/MS method for the measurement of linalool are lacking. To address this deficiency, a rapid and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for the analysis of linalool in human serum. Prior to the analysis, a simple sample preparation protocol including protein precipitation and liquid-liquid extraction of serum samples was created. The prepared samples were analyzed using a C18 reversed-phase column and gradient elution (acetonitrile and water, both containing 0.1% formic acid). A Waters Xevo TQ-S tandem mass spectrometer (positive mode) was used to quantitatively determine linalool and IS according to transitions of m/z 137.1→95.1 (tR 0.79 min) and 205.2→149.1 (tR 1.56 min), respectively. The method was validated for precision, accuracy, selectivity, linearity, sensitivity, matrix effects, and stability, and it was successfully applied to characterize the oral pharmacokinetics of linalool in humans. The newly developed LC-MS/MS-based method and its application in clinical trial serum samples are essential for the characterization of potential pharmacokinetic and pharmacodynamic interactions.
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Affiliation(s)
- Yan-Hong Wang
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Goutam Mondal
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | | | | | | | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Charles R. Yates
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Kurmanbayeva A, Ospanov M, Tamang P, Shah FM, Ali A, Ibrahim ZMA, Cantrell CL, Dinara S, Datkhayev U, Khan IA, Ibrahim MA. Regioselective Claisen-Schmidt Adduct of 2-Undecanone from Houttuynia cordata Thunb as Insecticide/Repellent against Solenopsis invicta and Repositioning Plant Fungicides against Colletotrichum fragariae. Molecules 2023; 28:6100. [PMID: 37630353 PMCID: PMC10458534 DOI: 10.3390/molecules28166100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
The U.S. Department of Agriculture (USDA) has established research programs to fight the phytopathogen Colletotrichum fragariae and the invasive red imported fire ant, Solenopsis invicta. C. fragariae is known to cause anthracnose disease in fruits and vegetables, while S. invicta is known for its aggressive behavior and painful stings and for being the cause of significant damage to crops, as well as harm to humans and animals. Many plants have been studied for potential activity against C. fragariae and S. invicta. Among the studied plants, Houttuynia cordata Thunb has been shown to contain 2-undecanone, which h is known for its antifungal activity against Colletotrichum gloesporioides. Based on the mean amount of sand removed, 2-undecanone showed significant repellency at 62.5 µg/g, similar to DEET (N,N-diethyl-meta-toluamide), against S. invicta. The 2-Undecanone with an LC50 of 44.59 µg/g showed toxicity against S. invicta workers. However, neither H. cordata extract nor 2-undecanone had shown activity against C. fragariae despite their known activity against C. gloesporioides, which in turn motivates us in repositioning 2-undecanone as a selected candidate for a Claisen-Schmidt condensation that enables access to several analogs (2a-f). Among the prepared analogs, (E)-1-(3-methylbenzo[b]thiophen-2-yl)dodec-1-en-3-one (2b) and (E)-1-(5-bromothiophen-2-yl)dodec-1-en-3-one (2f) showed promising activity against C. fragariae, revealing a distinctive structural activity relationship (SAR). The generated analogs revealed a clear regioselectivity pattern through forming the C=C alkene bond at position C-1. These data open the window for further lead optimization and product development in the context of managing C. fragariae and S. invicta.
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Affiliation(s)
- Aigerim Kurmanbayeva
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.K.); (M.O.); (F.M.S.); (A.A.); (I.A.K.)
- Department of Organization, Management and Economics of Pharmacy and Clinical Pharmacy, School of Pharmacy, S.D. Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
| | - Meirambek Ospanov
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.K.); (M.O.); (F.M.S.); (A.A.); (I.A.K.)
| | - Prabin Tamang
- USDA-ARS, Natural Products Utilization Research Unit, University, MS 38677, USA; (P.T.); (C.L.C.)
| | - Farhan Mahmood Shah
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.K.); (M.O.); (F.M.S.); (A.A.); (I.A.K.)
| | - Abbas Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.K.); (M.O.); (F.M.S.); (A.A.); (I.A.K.)
| | | | - Charles L. Cantrell
- USDA-ARS, Natural Products Utilization Research Unit, University, MS 38677, USA; (P.T.); (C.L.C.)
| | - Satmbekova Dinara
- Department of Organization, Management and Economics of Pharmacy and Clinical Pharmacy, School of Pharmacy, S.D. Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
- The National Academy of Science, Republic of Kazakhstan, Almaty 050010, Kazakhstan
| | - Ubaidilla Datkhayev
- Department of Organization, Management and Economics of Pharmacy and Clinical Pharmacy, School of Pharmacy, S.D. Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
| | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.K.); (M.O.); (F.M.S.); (A.A.); (I.A.K.)
| | - Mohamed A. Ibrahim
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.K.); (M.O.); (F.M.S.); (A.A.); (I.A.K.)
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Zulfiqar F, Ali Z, Viljoen AM, Chittiboyina AG, Khan IA. Flavonoid glycosides and ellagic acid cognates from defatted African mango ( Irvingia gabonensis) seed kernel. Nat Prod Res 2023; 37:2878-2887. [PMID: 36318869 DOI: 10.1080/14786419.2022.2140151] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 09/17/2022] [Accepted: 10/15/2022] [Indexed: 11/06/2022]
Abstract
Seventeen compounds of diverse classes including four flavonoid glycosides, five ellagic acid derivatives, and eight other metabolites were isolated from the methanolic extract of the defatted seed kernel of Irvingia gabonensis. Among the isolates, quercetin 3-O-methyl-4'-[α-L-rhamnopyranosyl-(1→3)]-O-α-L-rhamnopyranoside (1) and 3,3'-di-O-methyl-4'-O-α-L-rhamnopyranosylellagic acid 4-sulfate ester (5) were found to be previously undescribed. Structure elucidation was mainly achieved by the interpretation of 1D and 2D NMR and HRESIMS spectral data. Though compound 6 was previously reported, its 13C NMR data is being reported herein for the first time. To the best of our literature search knowledge, this is the first phytochemical report on I. gabonensis seed kernels.
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Affiliation(s)
- Fazila Zulfiqar
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Alvaro M Viljoen
- Department of Pharmaceutical Sciences, Tshwane University of Technology, Pretoria, South Africa
- SAMRC Herbal Drugs Research Unit, Tshwane University of Technology, Pretoria, South Africa
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences School of Pharmacy, University of Mississippi, University, MS, USA
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28
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Shah FM, Guddeti DK, Paudel P, Chen J, Li XC, Khan IA, Ali A. Matricaria chamomilla Essential Oils: Repellency and Toxicity against Imported Fire Ants (Hymenoptera: Formicidae). Molecules 2023; 28:5584. [PMID: 37513455 PMCID: PMC10384828 DOI: 10.3390/molecules28145584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/13/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Matricaria chamomilla flower essential oils (EOs) blue Egyptian (EO-1), chamomile German CO2 (EO-2), and chamomile German (EO-3) and the pure compound α-bisabolol were evaluated against red imported fire ants (RIFA), Solenopsis invicta Buren, black imported fire ants, S. richteri Forel (BIFA), and hybrid imported fire ants (HIFA) for their repellency and toxicity. A series of serial dilutions were tested starting from 125 µg/g until the failure of the treatment. Based on the amount of sand removed, EO-1 showed significant repellency at dosages of 7.8, 7.8, and 31.25 µg/g against RIFA, BIFA, and HIFA, respectively. EO-3 was repellent at 3.9, 7.8, and 31.25 µg/g against BIFA, RIFA, and HIFA, whereas α-bisabolol was active at 7.8, 7.8, and 31.25 µg/g against BIFA, HIFA, and RIFA, respectively. DEET (N, N-diethyl-meta-toluamide) was active at 31.25 µg/g. Toxicity of EOs and α-bisabolol was mild to moderate. For EO-1, LC50 values were 93.6 and 188.11 µg/g against RIFA and BIFA; 98.11 and 138.4 µg/g for EO-2; and 142.92 and 202.49 µg/g for EO-3, respectively. The LC50 of α-bisabolol was 159.23 µg/g against RIFA. In conclusion, M. chamomilla EOs and α-bisabolol offer great potential to be developed as imported fire ant repellents.
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Affiliation(s)
- Farhan Mahmood Shah
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA
| | - Dileep Kumar Guddeti
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA
| | - Pradeep Paudel
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA
| | - Jian Chen
- Biological Control of Pests Research Unit, USDA-ARS, Stoneville, MS 38776, USA
| | - Xing-Cong Li
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA
| | - Abbas Ali
- National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA
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Avula B, Bae JY, Ahn J, Katragunta K, Wang YH, Wang M, Kwon Y, Khan IA, Chittiboyina AG. 6-Oxofurostane and (iso)Spirostane Types of Saponins in Smilax sieboldii: UHPLC-QToF-MS/MS and GNPS-Molecular Networking Approach for the Rapid Dereplication and Biodistribution of Specialized Metabolites. Int J Mol Sci 2023; 24:11487. [PMID: 37511246 PMCID: PMC10380369 DOI: 10.3390/ijms241411487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Identifying novel phytochemical secondary metabolites following classical pharmacognostic investigations is tedious and often involves repetitive chromatographic efforts. During the past decade, Ultra-High Performance Liquid Chromatography-Quadrupole Time of Flight-Tandem Mass Spectrometry (UHPLC-QToF-MS/MS), in combination with molecular networking, has been successfully demonstrated for the rapid dereplication of novel natural products in complex mixtures. As a logical application of such innovative tools in botanical research, more than 40 unique 3-oxy-, 3, 6-dioxy-, and 3, 6, 27-trioxy-steroidal saponins were identified in aerial parts and rhizomes of botanically verified Smilax sieboldii. Tandem mass diagnostic fragmentation patterns of aglycones, diosgenin, sarsasapogenin/tigogenin, or laxogenin were critical to establishing the unique nodes belonging to six groups of nineteen unknown steroidal saponins identified in S. sieboldii. Mass fragmentation analysis resulted in the identification of 6-hydroxy sapogenins, believed to be key precursors in the biogenesis of characteristic smilaxins and sieboldins, along with other saponins identified within S. sieboldii. These analytes' relative biodistribution and characteristic molecular networking profiles were established by analyzing the leaf, stem, and root/rhizome of S. sieboldii. Deducing such profiles is anticipated to aid the overall product integrity of botanical dietary supplements while avoiding tedious pharmacognostic investigations and helping identify exogenous components within the finished products.
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Affiliation(s)
- Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Ji-Yeong Bae
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Jongmin Ahn
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Yan-Hong Wang
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Mei Wang
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Yongsoo Kwon
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Paudel P, Pandey P, Paris JJ, Ashpole NM, Mahdi F, Tian JM, Lee J, Wang M, Xu M, Chittiboyina AG, Khan IA, Ross SA, Li XC. Cannabinoid Receptor Type II Ligands from Sandalwood Oil and Synthetic α-Santalol Derivatives. J Nat Prod 2023. [PMID: 37450763 DOI: 10.1021/acs.jnatprod.3c00282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Bioassay-guided fractionation of the essential oil of Santalum album led to the identification of α-santalol (1) and β-santalol (2) as new chemotypes of cannabinoid receptor type II (CB2) ligands with Ki values of 10.49 and 8.19 μM, respectively. Nine structurally new α-santalol derivatives (4a-4h and 5) were synthesized to identify more selective and potent CB2 ligands. Compound 4e with a piperazine structural moiety demonstrated a Ki value of 0.99 μM against CB2 receptor and did not show binding activity against cannabinoid receptor type I (CB1) at 10 μM. Compounds 1, 2, and 4e increased intracellular calcium influx in SH-SY5Y human neuroblastoma cells that were attenuated by CB2 antagonism or inverse agonism, supporting the results that these compounds are CB2 agonists. Molecular docking showed that 1 and 4e had similar binding poses, exhibiting a unique interaction with Thr114 within the CB2 receptor, and that the piperazine structural moiety is required for the binding affinity of 4e. A 200 ns molecular dynamics simulation of CB2 complexed with 4e confirmed the stability of the complex. This structural insight lays a foundation to further design and synthesize more potent and selective α-santalol-based CB2 ligands for drug discovery.
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Affiliation(s)
| | | | | | | | | | | | | | - Mei Wang
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University, Mississippi 38677, United States
| | - Min Xu
- Center for Pharmaceutical Sciences, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
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Manassov N, Samy MN, Datkhayev U, Avula B, Adams SJ, Katragunta K, Raman V, Khan IA, Ross SA. Ultrastructural, Energy-Dispersive X-ray Spectroscopy, Chemical Study and LC-DAD-QToF Chemical Characterization of Cetraria islandica (L.) Ach. Molecules 2023; 28:molecules28114493. [PMID: 37298969 DOI: 10.3390/molecules28114493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/27/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
The lichen Cetraria islandica (L.) Ach. has been used in traditional and modern medicines for its many biological properties such as immunological, immunomodulating, antioxidant, antimicrobial, and anti-inflammatory activities. This species is gaining popularity in the market, with interest from many industries for selling as medicines, dietary supplements, and daily herbal drinks. This study profiled the morpho-anatomical features by light, fluorescence, and scanning electron microscopy; conducted an elemental analysis using energy-dispersive X-ray spectroscopy; and phytochemical analysis was performed using high-resolution mass spectrometry combined with a liquid chromatography system (LC-DAD-QToF) of C. islandica. In total, 37 compounds were identified and characterized based on comparisons with the literature data, retention times, and their mass fragmentation mechanism/s. The identified compounds were classified under five different classes, i.e., depsidones, depsides, dibenzofurans, aliphatic acids, and others that contain simple organic acids in majority. Two major compounds (fumaroprotocetraric acid and cetraric acid) were identified in the aqueous ethanolic and ethanolic extracts of C. islandica lichen. This detailed morpho-anatomical, EDS spectroscopy, and the developed LC-DAD-QToF approach for C. islandica will be important for correct species identification and can serve as a useful tool for taxonomical validation and chemical characterization. Additionally, chemical study of the extract of C. islandica led to isolation and structural elucidation of nine compounds, namely cetraric acid (1), 9'-(O-methyl)protocetraric acid (2), usnic acid (3), ergosterol peroxide (4), oleic acid (5), palmitic acid (6), stearic acid (7), sucrose (8), and arabinitol (9).
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Affiliation(s)
- Nurlen Manassov
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- S.D. Asfendiyarov Kazakh National Medical University, School of Pharmacy, Almaty 050012, Kazakhstan
| | - Mamdouh Nabil Samy
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Ubaidilla Datkhayev
- S.D. Asfendiyarov Kazakh National Medical University, School of Pharmacy, Almaty 050012, Kazakhstan
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Sebastian John Adams
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Vijayasankar Raman
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Samir A Ross
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- S.D. Asfendiyarov Kazakh National Medical University, School of Pharmacy, Almaty 050012, Kazakhstan
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
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Chittiboyina AG, Ali Z, Avula B, Khan SI, Mir TM, Zhang J, Aydoğan F, Zulfiqar F, Techen N, Parveen I, Pandey P, Adams SJ, Wang YH, Zhao J, Marshall GD, Pugh ND, Khan IA. Is Baikiain in Tara Flour a Causative Agent for the Adverse Events Associated with the Recalled Frozen French Lentil & Leek Crumbles Food Product? - A Working Hypothesis. Chem Res Toxicol 2023. [PMID: 37255213 DOI: 10.1021/acs.chemrestox.3c00100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The French Lentil & Leek Crumbles frozen food product was recently recalled due to reports of gastrointestinal issues. So far, 393 adverse illness complaints and 133 hospitalizations have been reported from consumption of this food, and the tara (Tara spinosa) protein flour ingredient is hypothesized to be responsible. A multipronged approach resulted in identification of (S)-(-)-baikiain in tara as a compound of interest due to its abundance, possible metabolic fate, and close resemblance to irreversible inhibitors of L-pipecolate oxidase. Oral administration of baikiain in ND4 mice showed a statistically significant increase in blood ALT levels and a reduction in liver GSH.
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Affiliation(s)
- Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Tahir M Mir
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Jin Zhang
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Fadime Aydoğan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Fazila Zulfiqar
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Natascha Techen
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Iffat Parveen
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Pankaj Pandey
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Sebastian J Adams
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Yan-Hong Wang
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Jianping Zhao
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Gailen D Marshall
- Department of Medicine, University of Mississippi Medical Center, Jackson Mississippi 39216, United States
| | - Nirmal D Pugh
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
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Pandey P, Neal WM, Zulfiqar F, Ali Z, Khan IA, Ferreira D, Chittiboyina AG. A combined experimental and computational chiroptical approach to establish the biosynthesis and absolute configuration of licochalcone L. Phytochemistry 2023:113732. [PMID: 37245686 DOI: 10.1016/j.phytochem.2023.113732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 05/30/2023]
Abstract
Often, chiral natural products exist as single stereoisomers; however, simultaneous occurrences of both enantiomers can exist in nature, resulting in scalemic or racemic mixtures. Ascertaining natural products' absolute configuration (AC) is pivotal for attributing their specific biological signature. Specific rotation data commonly characterize chiral non-racemic natural products; however, measurement conditions, viz., solvent and concentration, can influence the sign of specific rotation values, especially when characterizing natural products possessing small specific rotation values. For example, licochalcone L, a minor constituent of Glycyrrhiza inflata, was reported with a specific rotation of [α]D22= +13 (c 0.1, CHCl3); however, not establishing the AC and the reported zero specific rotation for an identical compound, licochalcone AF1, resulted in debatable chirality and its biogenesis. In this study, a combined experimental and computational chiroptical approach involving specific rotation and electronic circular dichroism (ECD) data, supported by time-dependent density functional theory (TDDFT), were effectively utilized to establish the AC of licochalcone L as the (E, 2″S)-isomer. Establishing the 2″S absolute configuration permitted the conception of a reasonable biosynthetic pathway involving intramolecular '5-exo-tet' ring opening of a chiral oxirane to form chiral licochalcone L in G. inflata.
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Affiliation(s)
- Pankaj Pandey
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States
| | - William M Neal
- Department of BioMolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States
| | - Fazila Zulfiqar
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States; Department of BioMolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States.
| | - Daneel Ferreira
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States; Department of BioMolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677-1848, United States.
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Husain I, Dale OR, Idrisi M, Gurley BJ, Avula B, Katragunta K, Ali Z, Chittiboyina A, Noonan G, Khan IA, Khan SI. Evaluation of the Herb-Drug Interaction (HDI) Potential of Zingiber officinale and Its Major Phytoconstituents. J Agric Food Chem 2023; 71:7521-7534. [PMID: 37134183 DOI: 10.1021/acs.jafc.2c07912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Ginger is currently one of the most popular herbs commonly added to diverse foods, beverages, and dietary supplements. We evaluated the ability of a well-characterized ginger extract, and several of its phytoconstituents, to activate select nuclear receptors as well as modulate the activity of various cytochrome P450s and ATP-binding cassette (ABC) transporters because phytochemical-mediated modulation of these proteins underlies many clinically relevant herb-drug interactions (HDI). Our results revealed ginger extract activated the aryl hydrocarbon receptor (AhR) in AhR-reporter cells and pregnane X receptor (PXR) in intestinal and hepatic cells. Among the phytochemicals investigated, (S)-6-gingerol, dehydro-6-gingerdione, and (6S,8S)-6-gingerdiol activated AhR, while 6-shogaol, 6-paradol, and dehydro-6-gingerdione activated PXR. Enzyme assays showed that ginger extract and its phytochemicals dramatically inhibited the catalytic activity of CYP3A4, 2C9, 1A2, and 2B6, and efflux transport capabilities of P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP). Dissolution studies with ginger extract conducted in biorelevant simulated intestinal fluid yielded (S)-6-gingerol and 6-shogaol concentrations that could conceivably exceed cytochrome P450 (CYP) IC50 values when consumed in recommended doses. In summary, overconsumption of ginger may disturb the normal homeostasis of CYPs and ABC transporters, which in turn, may elevate the risk for HDIs when consumed concomitantly with conventional medications.
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Affiliation(s)
- Islam Husain
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Olivia R Dale
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Mantasha Idrisi
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Bill J Gurley
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Amar Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Gregory Noonan
- Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, College Park, Maryland 20740, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Department of Bio-Molecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Department of Bio-Molecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
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Salehi A, Ghanadian M, Zolfaghari B, Jassbi AR, Fattahian M, Reisi P, Csupor D, Khan IA, Ali Z. Neuropharmacological Potential of Diterpenoid Alkaloids. Pharmaceuticals (Basel) 2023; 16:ph16050747. [PMID: 37242531 DOI: 10.3390/ph16050747] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/28/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
This study provides a narrative review of diterpenoid alkaloids (DAs), a family of extremely important natural products found predominantly in some species of Aconitum and Delphinium (Ranunculaceae). DAs have long been a focus of research attention due to their numerous intricate structures and diverse biological activities, especially in the central nervous system (CNS). These alkaloids originate through the amination reaction of tetra or pentacyclic diterpenoids, which are classified into three categories and 46 types based on the number of carbon atoms in the backbone structure and structural differences. The main chemical characteristics of DAs are their heterocyclic systems containing β-aminoethanol, methylamine, or ethylamine functionality. Although the role of tertiary nitrogen in ring A and the polycyclic complex structure are of great importance in drug-receptor affinity, in silico studies have emphasized the role of certain sidechains in C13, C14, and C8. DAs showed antiepileptic effects in preclinical studies mostly through Na+ channels. Aconitine (1) and 3-acetyl aconitine (2) can desensitize Na+ channels after persistent activation. Lappaconitine (3), N-deacetyllapaconitine (4), 6-benzoylheteratisine (5), and 1-benzoylnapelline (6) deactivate these channels. Methyllycaconitine (16), mainly found in Delphinium species, possesses an extreme affinity for the binding sites of α7 nicotinic acetylcholine receptors (nAChR) and contributes to a wide range of neurologic functions and the release of neurotransmitters. Several DAs such as bulleyaconitine A (17), (3), and mesaconitine (8) from Aconitum species have a drastic analgesic effect. Among them, compound 17 has been used in China for decades. Their effect is explained by increasing the release of dynorphin A, activating the inhibitory noradrenergic neurons in the β-adrenergic system, and preventing the transmission of pain messages by inactivating the Na+ channels that have been stressed. Acetylcholinesterase inhibitory, neuroprotective, antidepressant, and anxiolytic activities are other CNS effects that have been investigated for certain DAs. However, despite various CNS effects, recent advances in developing new drugs from DAs were insignificant due to their neurotoxicity.
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Affiliation(s)
- Arash Salehi
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Mustafa Ghanadian
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
- Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Behzad Zolfaghari
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Amir Reza Jassbi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran
| | - Maryam Fattahian
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Parham Reisi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81745-33871, Iran
| | - Dezső Csupor
- Institute of Clinical Pharmacy, Faculty of Pharmacy, University of Szeged, 6720 Szeged, Hungary
| | - Ikhlas A Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Chae HS, Dale O, Mir TM, Ashfaq MK, Avula B, Walker LA, Khan IA, Khan SI. Juniper Berries Regulate Diabetes and Obesity Markers Through Modulating PPAR α, PPAR γ, and LXR: In Vitro and In Vivo Effects. J Med Food 2023; 26:307-318. [PMID: 37186895 DOI: 10.1089/jmf.2022.0146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
The berries of Juniperus communis have been traditionally used for therapeutic purposes. They have been reported to possess various pharmacological effects such as anti-inflammatory, hypoglycemic and hypolipidemic activities. In this study, a methanolic extract of J. communis berries (JB) was evaluated for its effects on peroxisome proliferator-activated receptors alpha and gamma (PPARα and PPARγ), liver X receptor (LXR), glucose uptake and lipid accumulation using various cellular systems. At a concentration of 25 μg/mL, JB caused 3.77-fold activation of PPARα, 10.90-fold activation of PPARγ, and 4.43-fold activation of LXR in hepatic cells. JB inhibited (11%) the adipogenic effect induced by rosiglitazone in adipocytes and increased glucose uptake (90%) in muscle cells. In high-fat diet (HFD) fed mice, JB at a dose of 25 mg/kg body weight exhibited a 21% decrease in body weight. Fasting glucose levels in mice treated with 12.5 mg/kg of JB were significantly decreased (39%) indicating its efficacy in regulating hyperglycemia and obesity induced by HFD thus ameliorating the symptoms of type 2 diabetes. A series of energy metabolic genes, including Sirt1 (2.00-fold) and RAF1 (2.04-fold), were upregulated by JB, while rosiglitazone regulated the hepatic PPARγ only. Phytochemical analysis of JB indicated presence of a number of flavonoids and biflavonoids which seem to be responsible for the observed activity. It was concluded that JB acted as a multiple agonist of PPARα, PPARγ and LXR without the undesired effect of adipogenesis and exhibited the property of enhancing glucose uptake. The regulation of PPARα, PPARγ and LXR seems to be through Sirt1 and RAF1. In vivo results confirmed the antidiabetic and antiobesity potential of JB and indicated its utility in metabolic disorder and type 2 diabetes.
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Affiliation(s)
- Hee-Sung Chae
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Olivia Dale
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Tahir M Mir
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Mohammad K Ashfaq
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Larry A Walker
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
- Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
- Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
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Zhang J, Agarwal AK, Feng Q, Tripathi SK, Khan IA, Pugh ND. Identification of Botanicals that Unmask β-Glucan from the Cell Surface of an Opportunistic Fungal Pathogen. J Diet Suppl 2023; 21:154-166. [PMID: 37070414 DOI: 10.1080/19390211.2023.2201355] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Dectin-1 expressed on host immune cells recognizes β-glucans within the cell walls of fungal pathogens and plays an important role in the clearance of fungal infections. However, because β-glucan is masked by an outer layer of mannoproteins, fungal pathogens can evade detection by host immune cells. In this study, a microplate-based screen was developed to identify β-glucan unmasking activity exhibited by botanicals. This screen measures the activity of a reporter gene in response to the transcriptional activation of NF-κB due to the interaction between β-glucan on the fungal cell surface and Dectin-1 present on host immune cells. In this proof-of-concept study, we screened a collection of botanicals (10 plants and some of their reported pure compound actives) used in traditional medicine for their antifungal properties. Several hits were identified in samples that unmasked β-glucan at sub-inhibitory concentrations. The hit samples were confirmed by fluorescent staining with a β-glucan antibody, verifying that the samples identified in the screen did indeed unmask β-glucan. These results indicate that the purported antifungal activities attributed to some botanicals may be due, at least in part, to the presence of compounds that exhibit β-glucan unmasking activity. Enhanced exposure of cell wall β-glucans would allow the host to build resilience against fungal infections by helping the immune system to detect the pathogen and mount a more effective clearance mechanism. This screen, together with direct killing/growth inhibition assays, may therefore serve as a valuable tool for substantiating the use of botanicals in preventing and/or treating fungal infections.
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Affiliation(s)
- Jin Zhang
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Ameeta K Agarwal
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Qin Feng
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Siddharth K Tripathi
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Nirmal D Pugh
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
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Ahn J, Avonto C, Pandey P, Khan SI, Khan IA, Roberts DW, Chittiboyina AG. Chemistry of Isoeugenol and Its Oxidation Products: Mechanism and Kinetics of Isoeugenol as a Skin Sensitizer. Chem Res Toxicol 2023; 36:747-756. [PMID: 37042673 DOI: 10.1021/acs.chemrestox.2c00407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
Structurally similar phytochemical compounds may elicit markedly different skin sensitization responses. Eugenol and isoeugenol are natural phenylpropanoids found in various essential oils are frequently used as fragrance ingredients in consumer products due to their pleasing aromatic properties. Both compounds are also skin sensitizers with isoeugenol being a stronger sensitizer than eugenol. The most commonly accepted mechanisms for haptenation by eugenol involve formation of a quinone methide or an ortho-quinone intermediate. The mechanism for the increased skin response to isoeugenol remains elusive, although quinone methide intermediates have been proposed. The recent identification of diastereomeric 7,4'-oxyneolignans as electrophilic, thiol-depleting isoeugenol derivatives has revived interest in the possible role of elusive reactive intermediates associated with the isoeugenol's haptenation process. In the present work, integrated non-animal skin sensitization methods were performed to determine the ability of syn-7,4'-oxyneolignan to promote haptenation and activation of further molecular pathways in keratinocytes and dendritic cells, confirming it as a candidate skin sensitizer. Kinetic NMR spectroscopic studies using dansyl cysteamine (DCYA) confirmed the first ordered nature of the nucleophilic addition for the syn-7,4'-oxyneolignan. Computational studies reaffirmed the "syn" stereochemistry of the isolated 7,4'-oxyneolignans along with that of their corresponding DCYA adducts and provided evidence for the preferential stereoselectivity. A plausible rationale for isoeugenol's strong skin sensitization is proposed based on the formation of a hydroxy quinone methide as a reactive intermediate rather than the previously assumed quinone methide.
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Affiliation(s)
- Jongmin Ahn
- National Center for Natural Products Research, Research Institute of Pharmaceutical Science, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Natural Product Research Center & Natural Product Central Bank, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju 28116, Republic of Korea
| | - Cristina Avonto
- National Center for Natural Products Research, Research Institute of Pharmaceutical Science, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Firmenich Inc., 250 Plainsboro Road, Plainsboro Township, New Jersey 08536, United States
| | - Pankaj Pandey
- National Center for Natural Products Research, Research Institute of Pharmaceutical Science, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Shabana I Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Science, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Science, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - David W Roberts
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, England, U.K
| | - Amar G Chittiboyina
- National Center for Natural Products Research, Research Institute of Pharmaceutical Science, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
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Lee J, Wang M, Zhao J, Ali Z, Hawwal MF, Khan IA. Chemical Characterization and Quality Assessment of Copaiba Oil-Resin Using GC/MS and SFC/MS. Plants (Basel) 2023; 12:1619. [PMID: 37111842 PMCID: PMC10144763 DOI: 10.3390/plants12081619] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
In recent years, the popularity of copaiba oil-resin has increased worldwide due to its medicinal value and wide applications in industry. Despite its popularity, the oil has not been standardized by industry or regulatory agencies. Product adulteration in order to maximize profits has become a problem. To address these issues, the current study describes the chemical and chemometric characterization of forty copaiba oil-resin samples by GC/MS. The results demonstrated, with the exception of commercial samples, that all sample groups contained six characteristic compounds (β-caryophyllene, α-copaene, trans-α-bergamotene, α-humulene, γ-muurolene, and β-bisabolene) in varying concentrations. Furthermore, compositional patterns were observed in individual groups which corresponded to sample origin. Within the commercial group, two samples did not contain or contained only one of the characteristic compounds. Principal component analysis (PCA) revealed distinct groups which largely corresponded to sample origin. Moreover, commercial samples were detected by PCA as outliers, and formed a group far removed from the other samples. These samples were further subjected to analysis using a SFC/MS method. Product adulteration with soybean oil was clearly detected, with each individual triglyceride in soybean oil being unambiguously identified. By combining these analytical techniques, the overall quality of copaiba oil-resin can be assessed.
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Affiliation(s)
- Joseph Lee
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Mei Wang
- Natural Products Utilization Research Unit, Agricultural Research Service, U.S. Department of Agriculture, University, MS 38677, USA
| | - Jianping Zhao
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Mohammed F. Hawwal
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 4545, Saudi Arabia
| | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Avula B, Katragunta K, Adams SJ, Wang YH, Chittiboyina AG, Khan IA. Applicability of LC-QToF and Microscopical Tools in Combating the Sophisticated, Economically Motivated Adulteration of Poppy Seeds. Foods 2023; 12:foods12071510. [PMID: 37048333 PMCID: PMC10094636 DOI: 10.3390/foods12071510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023] Open
Abstract
Morphine and codeine are the two principal opiates found in the opium poppy (Papaver somniferum L.) and are therapeutically used for pain management. Poppy seeds with low opiates are primarily used for culinary purposes due to their nutritional and sensory attributes. Intentional adulteration of poppy seeds is common, often combined with immature, less expensive, exhausted, or substituted with morphologically similar seeds, viz., amaranth, quinoa, and sesame. For a safer food supply chain, preventive measures must be implemented to mitigate contamination or adulteration. Moreover, the simultaneous analysis of P. somniferum and its adulterants is largely unknown. Pre- and post-processing further complicate the alkaloid content and may pose a significant health hazard. To address these issues, two independent methods were investigated with eight botanically verified and fifteen commercial samples. Microscopical features were established for the authenticity of raw poppy seeds. Morphine, codeine, and thebaine quantities ranged from 0.8-223, 0.2-386, and 0.1-176 mg/kg, respectively, using LC-QToF. In most cases, conventional opiates have a higher content than papaverine and noscapine. The analytical methodology provided a chemical profile of 47 compounds that can be effectively applied to distinguish poppy seeds from their adulterants and may serve as an effective tool to combat ongoing adulteration.
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Affiliation(s)
- Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Sebastian John Adams
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Yan-Hong Wang
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
- Division of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Osman AG, Avula B, Katragunta K, Ali Z, Chittiboyina AG, Khan IA. Elderberry Extracts: Characterization of the Polyphenolic Chemical Composition, Quality Consistency, Safety, Adulteration, and Attenuation of Oxidative Stress- and Inflammation-Induced Health Disorders. Molecules 2023; 28:molecules28073148. [PMID: 37049909 PMCID: PMC10096080 DOI: 10.3390/molecules28073148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/24/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Elderberry is highly reputed for its health-improving effects. Multiple pieces of evidence indicate that the consumption of berries is linked to enhancing human health and preventing or delaying the onset of chronic medical conditions. Compared with other fruit, elderberry is a very rich source of anthocyanins (approximately 80% of the polyphenol content). These polyphenols are the principals that essentially contribute to the high antioxidant and anti-inflammatory capacities and the health benefits of elderberry fruit extract. These health effects include attenuation of cardiovascular, neurodegenerative, and inflammatory disorders, as well as anti-diabetic, anticancer, antiviral, and immuno-stimulatory effects. Sales of elderberry supplements skyrocketed to $320 million over the year 2020, according to an American Botanical Council (ABC) report, which is attributable to the purported immune-enhancing effects of elderberry. In the current review, the chemical composition of the polyphenolic content of the European elderberry (Sambucus nigra) and the American elderberry (Sambucus canadensis), as well as the analytical techniques employed to analyze, characterize, and ascertain the chemical consistency will be addressed. Further, the factors that influence the consistency of the polyphenolic chemical composition, and hence, the consistency of the health benefits of elderberry extracts will be presented. Additionally, adulteration and safety as factors contributing to consistency will be covered. The role of elderberry in enhancing human health alone with the pharmacological basis, the cellular pathways, and the molecular mechanisms underlying the observed health benefits of elderberry fruit extracts will be also reviewed.
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Affiliation(s)
- Ahmed G. Osman
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA
| | - Bharathi Avula
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA
| | - Amar G. Chittiboyina
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA
| | - Ikhlas A. Khan
- National Center for Natural Products Research, University of Mississippi, University, MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Mukatay U, Samy MN, Avula B, Katragunta K, Kemelbek M, Zhubanova A, Khan IA, Ross SA. Isolation and LC-QToF Characterization of Secondary Metabolites from an Endemic Plant Artemisia heptapotamica Poljak. Molecules 2023; 28:molecules28072908. [PMID: 37049671 PMCID: PMC10096343 DOI: 10.3390/molecules28072908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/16/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023] Open
Abstract
Phytochemical investigation of the aerial parts of Artemisia heptapotamica Poljak led to the isolation of ten known compounds, including four alkyl p-coumarates: octadecyl trans-p-coumarate (1), icosy trans-p-coumarate (2), docosyl trans-p-coumarate (3), and tetracosyl trans-p-coumarate (4), one sesquiterpene lactone: santonin (5), four flavonoids; axillarin (6), quercetin 3-O-methyl ether (7), luteolin (8), and quercetin (9), and one phenolic acid derivative: p-coumaric acid (10). The structures of the isolated compounds were identified by various spectroscopic analyses. Additionally, the antimicrobial activity of the total extract and different fractions was screened, and they exhibited no inhibition of the growth of Candida albicans, C. neoformans, Aspergillus fumigatus, methicillin-resistant Staphylococcus aureus (MRS), E. coli, Pseudomonas aeruginosa, Klebsiella pneumonia, and Vancomycin-resistant Enterococci (VRE) at the tested concentrations ranging from 8 to 200 μg/mL. The identification and tentative characterization of the secondary metabolites were conducted using LC-QToF analysis. This method helps in the putative characterization of sesquiterpene lactones, flavonoids, coumarate derivatives, and aliphatic compounds. The developed method identified 43 compounds, of which the majority were sesquiterpene lactones, such as eudesmanolides, germacranolides, and guaianolide derivatives, followed by flavonoids. The proposed LC-QToF method helps develop dereplication strategies and understand the major class of chemicals before proceeding with the isolation of compounds.
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Gafner S, Blumenthal M, Foster S, Cardellina JH, Khan IA, Upton R. Botanical Ingredient Forensics: Detection of Attempts to Deceive Commonly Used Analytical Methods for Authenticating Herbal Dietary and Food Ingredients and Supplements. J Nat Prod 2023; 86:460-472. [PMID: 36716213 PMCID: PMC9972475 DOI: 10.1021/acs.jnatprod.2c00929] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Indexed: 05/30/2023]
Abstract
Botanical ingredients are used widely in phytomedicines, dietary/food supplements, functional foods, and cosmetics. Products containing botanical ingredients are popular among many consumers and, in the case of herbal medicines, health professionals worldwide. Government regulatory agencies have set standards (collectively referred to as current Good Manufacturing Practices, cGMPs) with which suppliers and manufacturers must comply. One of the basic requirements is the need to establish the proper identity of crude botanicals in whole, cut, or powdered form, as well as botanical extracts and essential oils. Despite the legal obligation to ensure their authenticity, published reports show that a portion of these botanical ingredients and products are adulterated. Most often, such adulteration is carried out for financial gain, where ingredients are intentionally substituted, diluted, or "fortified" with undisclosed lower-cost ingredients. While some of the adulteration is easily detected with simple laboratory assays, the adulterators frequently use sophisticated schemes to mimic the visual aspects and chemical composition of the labeled botanical ingredient in order to deceive the analytical methods that are used for authentication. This review surveys the commonly used approaches for botanical ingredient adulteration and discusses appropriate test methods for the detection of fraud based on publications by the ABC-AHP-NCNPR Botanical Adulterants Prevention Program, a large-scale international program to inform various stakeholders about ingredient and product adulteration. Botanical ingredients at risk of adulteration include, but are not limited to, the essential oils of lavender (Lavandula angustifolia, Lamiaceae), rose (Rosa damascena, Rosaceae), sandalwood (Santalum album, Santalaceae), and tea tree (Melaleuca alternifolia, Myrtaceae), plus the extracts of bilberry (Vaccinium myrtillus, Ericaceae) fruit, cranberry (Vaccinium macrocarpon, Ericaceae) fruit, elder (Sambucus nigra, Viburnaceae) berry, eleuthero (Eleutherococcus senticosus, Araliaceae) root, ginkgo (Ginkgo biloba, Ginkgoaceae) leaf, grape (Vitis vinifera, Vitaceae) seed, saw palmetto (Serenoa repens, Arecaceae) fruit, St. John's wort (Hypericum perforatum, Hypericaceae) herb, and turmeric (Curcuma longa, Zingiberaceae) root/rhizome, among numerous others.
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Affiliation(s)
- Stefan Gafner
- American
Botanical Council, Austin, Texas 78714, United States
| | - Mark Blumenthal
- American
Botanical Council, Austin, Texas 78714, United States
| | - Steven Foster
- Steven Foster
Group, Eureka Springs, Arkansas 72632, United States
| | | | - Ikhlas A. Khan
- National
Center for Natural Products Research, University
of Mississippi, University, Mississippi 38677, United States
| | - Roy Upton
- American
Herbal Pharmacopoeia, Scotts
Valley, California 95067, United States
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44
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Eloutify Y, El-Shiekh RA, Ibrahim KM, Elshimy R, Avula B, Katragunta K, Khan IA, Meselhy MR. Bioassay-Guided Isolation of Antimicrobial Components and LC/QToF Profile of Plumeria obtusa: Potential for the Treatment of Antimicrobial Resistance. ACS Omega 2023; 8:6476-6491. [PMID: 36844537 PMCID: PMC9947952 DOI: 10.1021/acsomega.2c06803] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 01/23/2023] [Indexed: 05/31/2023]
Abstract
The methanolic fraction (M-F) of the total extract (TE) of Plumeria obtusa L. aerial parts showed promising antibacterial effects against the MDR (multidrug-resistant) gram-negative pathogens Klebsiella pneumoniae and Escherichia coli O157:H7 [Shiga toxin-producing E. coli (STEC)]. In addition, M-F had a synergistic effect (in combination with vancomycin) against the MDR gram-positive strains MRSA (methicillin-resistant Staphylococcus aureus) and Bacillus cereus. After treating the K. pneumoniae- and STEC-infected mice with M-F (25 mg/kg, i.p.), the level of IgM and TNF-α was decreased and the severity of pathological lesions were reduced better than that observed after administration of gentamycin (33 mg/kg, i.p.). Thirty-seven compounds including 10 plumeria-type iridoids and 18 phenolics, 7 quinoline derivatives, 1 amino acid, and 1 fatty acid were identified in TE using LC/ESI-QToF. Furthermore, five compounds; kaempferol 3-O-rutinoside (M1), quercetin 3-O-rutinoside (M2), glochiflavanoside B (M3), plumieride (M4), and 13-O-caffeoylplumieride (M5) were isolated from M-F. M5 was active against K. pneumoniae (MIC of 64 μg/mL) and STEC (MIC of 32 μg/mL). These findings suggested that M-F and M5 are promising antimicrobial natural products for combating MDR K. pneumoniae and STEC nosocomial infections.
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Affiliation(s)
- Yousra
Tarek Eloutify
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, Kasr el Aini St, Cairo 11562, Egypt
| | - Riham A. El-Shiekh
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, Kasr el Aini St, Cairo 11562, Egypt
| | - Khaled Meselhy Ibrahim
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, Kasr el Aini St, Cairo 11562, Egypt
| | - Rana Elshimy
- Department
of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Giza 3221405, Egypt
- Department
of Microbiology
and Immunology, Egyptian Drug Authority, Cairo 11553, Egypt
| | - Bharathi Avula
- National
Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Kumar Katragunta
- National
Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Ikhlas A. Khan
- National
Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
- Division
of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Meselhy R. Meselhy
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, Kasr el Aini St, Cairo 11562, Egypt
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Jekabsons MB, Merrell M, Skubiz AG, Thornton N, Milasta S, Green D, Chen T, Wang YH, Avula B, Khan IA, Zhou YD. Breast cancer cells that preferentially metastasize to lung or bone are more glycolytic, synthesize serine at greater rates, and consume less ATP and NADPH than parent MDA-MB-231 cells. Cancer Metab 2023; 11:4. [PMID: 36805760 PMCID: PMC9940388 DOI: 10.1186/s40170-023-00303-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/25/2023] [Indexed: 02/22/2023] Open
Abstract
Gene expression signatures associated with breast cancer metastases suggest that metabolic re-wiring is important for metastatic growth in lungs, bones, and other organs. However, since pathway fluxes depend on additional factors such as ATP demand, allosteric effects, and post-translational modification, flux analysis is necessary to conclusively establish phenotypes. In this study, the metabolic phenotypes of breast cancer cell lines with low (T47D) or high (MDA-MB-231) metastatic potential, as well as lung (LM)- and bone (BoM)-homing lines derived from MDA-MB-231 cells, were assessed by 13C metabolite labeling from [1,2-13C] glucose or [5-13C] glutamine and the rates of nutrient and oxygen consumption and lactate production. MDA-MB-231 and T47D cells produced 55 and 63%, respectively, of ATP from oxidative phosphorylation, whereas LM and BoM cells were more glycolytic, deriving only 20-25% of their ATP from mitochondria. ATP demand by BoM and LM cells was approximately half the rate of the parent cells. Of the anabolic fluxes assessed, nucleotide synthesis was the major ATP consumer for all cell lines. Glycolytic NADH production by LM cells exceeded the rate at which it could be oxidized by mitochondria, suggesting that the malate-aspartate shuttle was not involved in re-oxidation of these reducing equivalents. Serine synthesis was undetectable in MDA-MB-231 cells, whereas 3-5% of glucose was shunted to serine by LM and BoM lines. Proliferation rates of T47D, BoM, and LM lines tightly correlated with their respiration-normalized NADPH production rates. In contrast, MDA-MB-231 cells produced NADPH and GSH at higher rates, suggesting this line is more oxidatively stressed. Approximately half to two-thirds of NADPH produced by T47D, MDA-MB-231, and BoM cells was from the oxidative PPP, whereas the majority in LM cells was from the folate cycle. All four cell lines used the non-oxidative PPP to produce pentose phosphates, although this was most prominent for LM cells. Taken together, the metabolic phenotypes of LM and BoM lines differed from the parent line and from each other, supporting the metabolic re-wiring hypothesis as a feature of metastasis to lung and bone.
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Affiliation(s)
- Mika B. Jekabsons
- grid.251313.70000 0001 2169 2489Department of Biology, University of Mississippi, University, MS 38677 USA
| | - Mollie Merrell
- grid.251313.70000 0001 2169 2489Department of Biology, University of Mississippi, University, MS 38677 USA
| | - Anna G. Skubiz
- grid.251313.70000 0001 2169 2489Department of Biology, University of Mississippi, University, MS 38677 USA
| | - Noah Thornton
- grid.251313.70000 0001 2169 2489Department of Biology, University of Mississippi, University, MS 38677 USA
| | - Sandra Milasta
- grid.240871.80000 0001 0224 711XDepartment of Immunology, St Jude Children’s Research Hospital, Memphis, TN 38105 USA
| | - Douglas Green
- grid.240871.80000 0001 0224 711XDepartment of Immunology, St Jude Children’s Research Hospital, Memphis, TN 38105 USA
| | - Taosheng Chen
- grid.240871.80000 0001 0224 711XDepartment of Chemical Biology and Therapeutics, St Jude Children’s Research Hospital, Memphis, TN 38105 USA
| | - Yan-Hong Wang
- grid.251313.70000 0001 2169 2489National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677 USA
| | - Bharathi Avula
- grid.251313.70000 0001 2169 2489National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677 USA
| | - Ikhlas A. Khan
- grid.251313.70000 0001 2169 2489National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677 USA ,grid.251313.70000 0001 2169 2489Department of Biomedical Sciences, School of Pharmacy, University of Mississippi, University, MS 38677 USA
| | - Yu-Dong Zhou
- grid.251313.70000 0001 2169 2489Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677 USA
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Eloutify YT, El-Shiekh RA, Ibrahim KM, Hamed AR, Al-Karmalawy AA, Shokry AA, Ahmed YH, Avula B, Katragunta K, Khan IA, Meselhy MR. Bioactive fraction from Plumeria obtusa L. attenuates LPS-induced acute lung injury in mice and inflammation in RAW 264.7 macrophages: LC/QToF-MS and molecular docking. Inflammopharmacology 2023; 31:859-875. [PMID: 36773191 PMCID: PMC10140140 DOI: 10.1007/s10787-023-01144-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/26/2022] [Indexed: 02/12/2023]
Abstract
In this study, the anti-inflammatory effects of the methanolic extract (TE) of Plumeria obtusa L. (aerial parts) and its fractions were evaluated in vitro, and active fraction was evaluated in vivo. Among tested extracts, dichloromethane fraction (DCM-F) exhibited the strongest inhibition of lipopolysaccharide (LPS)-induced nitric oxide (NO) in RAW 264.7 macrophages. The effect of DCM-F on LPS-induced acute lung injury (ALI) in mice was studied. The animals were divided into five groups (n = 7) randomly; Gp I: negative control, GP II: positive control (LPS group), GP III: standard (dexamethasone, 2 mg/kg b.wt), GP IV and V: DCM-F (100 mg/kg), and DEM-F (200 mg/kg), respectively. DCM-F at a dose of 200 mg/kg suppressed the ability of LPS to increase the levels of nitric oxide synthase (iNOS), NO, tumor necrosis factor-α (TNF-α), and interleukin 6 (IL-6), as measured by ELISA. In addition, the expression of cyclooxygenase-2 (COX-2) was reduced (determined by immunohistochemistry) and the level of malondialdehyde (MDA) was decreased while that of catalase was restored to the normal values. Furthermore, the histopathological scores of inflammation induced by LPS were reduced. Twenty-two compounds were tentatively identified in DCM-F using LC/ESI-QToF with iridoids, phenolic derivatives and flavonoids as major constituents. Identified compounds were subjected to two different molecular docking processes against iNOS and prostaglandin E synthase-1 target receptors. Notably, protoplumericin A and 13-O-coumaroyl plumeride were the most promising members compared to the co-crystallized inhibitor in each case. These findings suggested that DCM-F attenuates the LPS-induced ALI in experimental animals through its anti-inflammatory and antioxidant potential.
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Affiliation(s)
- Yousra T Eloutify
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Riham A El-Shiekh
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Khaled Meselhy Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Ahmed R Hamed
- Chemistry of Medicinal Plants Department and Biology Unit, Central Lab for the Pharmaceutical and Drug Industries Research Institute, National Research Centre, 33 El-Bohouth St, Giza, 12622, Dokki, Egypt
| | - Ahmed A Al-Karmalawy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th of October City, Giza, 12566, Egypt
| | - Aya A Shokry
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - Yasmine H Ahmed
- Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA.,Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Meselhy R Meselhy
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt.
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47
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Ahmed MMA, Ragab EA, Zayed A, El-Ghaly EM, Ismail SK, Khan SI, Ali Z, Chittiboyina AG, Khan IA. Litoarbolide A: an undescribed sesquiterpenoid from the Red Sea soft coral Litophyton arboreum with an in vitro anti-malarial activity evaluation. Nat Prod Res 2023; 37:542-550. [PMID: 35491702 DOI: 10.1080/14786419.2022.2071268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Soft corals distributed across the Red Sea coasts are a rich source of diverse and bioactive natural products. Chemical probing of the Red Sea soft coral Litophyton arboreum led to isolation and structural characterization of an undescribed sesquiterpenoid, litoarbolide A (1), along with 14 previously reported metabolites (2-15). The chemical structures of the isolates were assigned based on NMR as well as high resolution electrospray ionization mass spectrometry (HR-ESI-MS) data. Litoarbolide A is supposed to be the biosynthetic precursor to other sesquiterpenoids, which formed via further post-translational modifications. Furthermore, these metabolites were evaluated for anti-malarial activity, where only the acyclic sesquiterpenoid of a sec-germacrane nucleus (7) showed an activity against chloroquine-sensitive (D6) and chloroquine-resistant (W2) strains of Plasmodium falciparum with IC50 at 3.7 and 2.2 mg/mL, respectively. Moreover, the isolated metabolites were all non-toxic to the Vero cell line. These findings support the consideration of L. arboreum in further natural anti-malarial studies.
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Affiliation(s)
- Mohammed M A Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.,National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States.,Division of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Ehab A Ragab
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Ahmed Zayed
- Department of Pharmacognosy, Tanta University, College of Pharmacy, Tanta, Egypt.,Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Kaiserslautern, Germany
| | - Elsayed M El-Ghaly
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Said K Ismail
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States.,Division of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States.,Division of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
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48
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Halegoua-DeMarzio D, Navarro V, Ahmad J, Avula B, Barnhart H, Barritt AS, Bonkovsky HL, Fontana RJ, Ghabril MS, Hoofnagle JH, Khan IA, Kleiner DE, Phillips E, Stolz A, Vuppalanchi R. Liver Injury Associated with Turmeric-A Growing Problem: Ten Cases from the Drug-Induced Liver Injury Network [DILIN]. Am J Med 2023; 136:200-206. [PMID: 36252717 PMCID: PMC9892270 DOI: 10.1016/j.amjmed.2022.09.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Turmeric is a commonly used herbal product that has been implicated in causing liver injury. The aim of this case series is to describe the clinical, histologic, and human leukocyte antigen (HLA) associations of turmeric-associated liver injury cases enrolled the in US Drug-Induced Liver Injury Network (DILIN). METHODS All adjudicated cases enrolled in DILIN between 2004 and 2022 in which turmeric was an implicated product were reviewed. Causality was assessed using a 5-point expert opinion score. Available products were analyzed for the presence of turmeric using ultra-high-performance liquid chromatography. Genetic analyses included HLA sequencing. RESULTS Ten cases of turmeric-associated liver injury were found, all enrolled since 2011, and 6 since 2017. Of the 10 cases, 8 were women, 9 were White, and median age was 56 years (range 35-71). Liver injury was hepatocellular in 9 patients and mixed in 1. Liver biopsies in 4 patients showed acute hepatitis or mixed cholestatic-hepatic injury with eosinophils. Five patients were hospitalized, and 1 patient died of acute liver failure. Chemical analysis confirmed the presence of turmeric in all 7 products tested; 3 also contained piperine (black pepper). HLA typing demonstrated that 7 patients carried HLA-B*35:01, 2 of whom were homozygous, yielding an allele frequency of 0.450 compared with population controls of 0.056-0.069. CONCLUSION Liver injury due to turmeric appears to be increasing in the United States, perhaps reflecting usage patterns or increased combination with black pepper. Turmeric causes potentially severe liver injury that is typically hepatocellular, with a latency of 1 to 4 months and strong linkage to HLA-B*35:01.
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Affiliation(s)
| | | | - Jawad Ahmad
- Icahn School of Medicine at Mount Sinai, New York, NY
| | | | | | | | | | | | | | - Jay H Hoofnagle
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Md
| | | | - David E Kleiner
- National Cancer Institute, National Institutes of Health, Bethesda, Md
| | | | - Andrew Stolz
- University of Southern California Keck School of Medicine, Los Angeles, Calif
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49
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Husain I, Dale OR, Martin K, Gurley BJ, Adams SJ, Avula B, Chittiboyina AG, Khan IA, Khan SI. Screening of medicinal plants for possible herb-drug interactions through modulating nuclear receptors, drug-metabolizing enzymes and transporters. J Ethnopharmacol 2023; 301:115822. [PMID: 36223846 DOI: 10.1016/j.jep.2022.115822] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/30/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The last three decades have witnessed a surge in popularity and consumption of herbal products. An unintended consequence of such popularity is that chronic consumption of these products can often modulate the functions of various proteins involved in drug disposition and may, in turn, impose risks for herb-drug interactions (HDIs), leading to serious adverse health outcomes. Identifying plants that may give rise to clinically relevant HDIs is essential, and proactive dissemination of such research outcomes is necessary for researchers, clinicians, and average consumers. AIM OF THE STUDY The main objective of this study was to evaluate the HDI potential of plants commonly used as ingredients in many herbal products, including BDS. MATERIALS AND METHODS The dried material of 123 plants selected from the NCNPR repository was extracted with 95% ethanol. The extracts were screened for agonistic effects on nuclear receptors (PXR and AhR) by reporter gene assays in PXR-transfected HepG2 and AhR-reporter cells. For cytochrome P450 enzyme (CYP) inhibition studies, CYP450 baculosomes were incubated with enzyme-specific probe substrates by varying concentrations of extracts. The inhibitory effect on the efflux transporter P-glycoprotein (P-gp) was investigated via rhodamine (Rh-123) uptake assay in P-gp overexpressing MDR1-MDCK cells. RESULTS Out of 123 plants, 16 increased transcriptional activity of human PXR up to 4 to 7-fold at 60 μg/mL, while 18 plants were able to increase AhR activity up to 10 to 40-fold at 30 μg/mL. Thirteen plants inhibited the activity of CYP3A4, while 10 plants inhibited CYP1A2 activity with IC50 values in the range of 1.3-10 μg/mL. Eighteen plants (at 50 μg/mL) increased intracellular accumulation of Rh-123 (>150%) in MDR1-MDCK cells. Additionally, other plants tested in this study were able to activate PXR, AhR, or both to lesser extents, and several inhibited the catalytic activity of CYPs at higher concentrations (IC50 >10 μg/mL). CONCLUSIONS The results indicate that prolonged or excessive consumption of herbal preparations rich in such plants (presented in Figs. 1a, 2a, 3a, 4a, and 5a) may pose a risk for CYP- and P-gp-mediated HDIs, leading to unwanted side effects due to the altered pharmacokinetics of concomitantly ingested medications.
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Affiliation(s)
- Islam Husain
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Olivia R Dale
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Katherine Martin
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Bill J Gurley
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Sebastian J Adams
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States; Department of Bio-Molecular Sciences, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States; Department of Bio-Molecular Sciences, School of Pharmacy, The University of Mississippi, Mississippi, 38677, United States.
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50
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Avula B, Katragunta K, Osman AG, Ali Z, John Adams S, Chittiboyina AG, Khan IA. Advances in the Chemistry, Analysis and Adulteration of Anthocyanin Rich-Berries and Fruits: 2000-2022. Molecules 2023; 28:560. [PMID: 36677615 PMCID: PMC9865467 DOI: 10.3390/molecules28020560] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/09/2023] Open
Abstract
Anthocyanins are reported to exhibit a wide variety of remedial qualities against many human disorders, including antioxidative stress, anti-inflammatory activity, amelioration of cardiovascular diseases, improvement of cognitive decline, and are touted to protect against neurodegenerative disorders. Anthocyanins are water soluble naturally occurring polyphenols containing sugar moiety and are found abundantly in colored fruits/berries. Various chromatographic (HPLC/HPTLC) and spectroscopic (IR, NMR) techniques as standalone or in hyphenated forms such as LC-MS/LC-NMR are routinely used to gauge the chemical composition and ensure the overall quality of anthocyanins in berries, fruits, and finished products. The major emphasis of the current review is to compile and disseminate various analytical methodologies on characterization, quantification, and chemical profiling of the whole array of anthocyanins in berries, and fruits within the last two decades. In addition, the factors affecting the stability of anthocyanins, including pH, light exposure, solvents, metal ions, and the presence of other substances, such as enzymes and proteins, were addressed. Several sources of anthocyanins, including berries and fruit with their botanical identity and respective yields of anthocyanins, were covered. In addition to chemical characterization, economically motivated adulteration of anthocyanin-rich fruits and berries due to increasing consumer demand will also be the subject of discussion. Finally, the health benefits and the medicinal utilities of anthocyanins were briefly discussed. A literature search was performed using electronic databases from PubMed, Science Direct, SciFinder, and Google Scholar, and the search was conducted covering the period from January 2000 to November 2022.
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Affiliation(s)
- Bharathi Avula
- National Center for Natural Products Research, University, MS 38677, USA
| | - Kumar Katragunta
- National Center for Natural Products Research, University, MS 38677, USA
| | - Ahmed G. Osman
- National Center for Natural Products Research, University, MS 38677, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, University, MS 38677, USA
| | | | | | - Ikhlas A. Khan
- National Center for Natural Products Research, University, MS 38677, USA
- Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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