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Mohamed OG, Shalabi AA, El Halawany AM, Tripathi A, Abdel-Sattar E. Hexagonosides A-F: Pregnane glycosides isolated from Caralluma hexagona. PHYTOCHEMISTRY 2024; 217:113903. [PMID: 37918619 DOI: 10.1016/j.phytochem.2023.113903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 10/18/2023] [Accepted: 10/22/2023] [Indexed: 11/04/2023]
Abstract
Chemical investigation of Caralluma hexagona Lavranos, a wild plant growing in Yemen, led to the isolation of four previously undescribed acylated pregnane glycosides, hexagonosides A-D (1-4), together with two sets of mixtures (hexagonosides E and F), each set consists of three interconvertible pregnane glycoside isomers, hexagonosides E (5a-c) and F (6a-c). The chemical structures of the isolated pregnane glycosides were elucidated by extensive 1D/2D NMR and HRESI-MS analysis, featuring 6'-O-benzoyl-1'-O-β-glucosyl residue at aglycone C-20; while aglycone C-3 was substituted with disaccharide sugar chain (1, 2, 5a-c) or a trisaccharide sugar chain (3, 4, 6a-c). Metabolites E and F included an extra benzoyl substitution in C-20 glucosyl residue which is migrating between the OH groups of C-2', C-3' and C-4' resulting in equilibrating conformations (5a-c and 6a-c) when incubated in HPLC solvent, which we confirmed by the analytical study.
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Affiliation(s)
- Osama G Mohamed
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt; Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Akram A Shalabi
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Ali M El Halawany
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
| | - Ashootosh Tripathi
- Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Essam Abdel-Sattar
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt.
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El-Shiekh RA, Shalabi AA, Al-Hawshabi OSS, Ayman Salkini M, Abdel-Sattar E. Anticholinesterase and anti-inflammatory constituents from Caralluma awdeliana, a medicinal plant from Yemen. Steroids 2023; 193:109198. [PMID: 36780968 DOI: 10.1016/j.steroids.2023.109198] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
From the dichloromethane (DCM) fraction of the crude ethanolic extract of Caralluma awdeliana, four pregnane glycosides and a flavone glycoside were isolated using a bio-guided isolation approach. The different extracts of C. awdeliana were subjected to in vitro enzyme inhibitory assays of anticholinesterases (AChE and BChE) and anti-inflammatory (COXs and 5-LOX). The highest inhibitory activity was exhibited by DCM fraction against COX-1, COX-2, and 5-LOX with IC50 of 4.8 ± 0.5 μg/mL, 0.68 ± 0.2 μg/mL, and 39.5 ± 3.0 μg/mL, respectively. The DCM showed also a moderate activity against AChE (IC50 384.72 ± 3.6 μg/mL), and BChE (IC50 384.72 ± 3.6 μg/mL). The repeated chromatography of DCM fraction resulted in the isolation of two new pregnane glycosides, namely awdeliosides A (1) and B (4), two known ones, namely caratuberosides B and D, along with the known flavone glycoside identified as luteolin 4 -O-neohesperidoside. All the isolated compounds were tested for their in vitro enzyme inhibitory assays. Among the isolated compounds, awdelioside B (4) showed the most potent effect against COX-1 with IC50 value of 10.99 ± 0.35 μM, compared to standard celecoxib (IC50 230.74 ± 2.62 μM). All the isolated compounds showed weak anticholinesterase, except a moderate activity observed for awdelioside B (4) against BChE with IC50 value of 15.63 ± 3.5 μM, compared to standard donepezil (IC50 0.77 ± 0.0088 μM).
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Affiliation(s)
- Riham A El-Shiekh
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Akram A Shalabi
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | | | - Mohamad Ayman Salkini
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Essam Abdel-Sattar
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
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Hamed AI, Ben Said R, Ben Aissa MA, Abdel-Farid IB, Kontek B, Kowalczyk M, Oleszek W, Stochmal A, Kowalska I, Olas B. Comprehensive polyoxypregnane glycosides report in Caralluma quadrangula using UPLC-ESI-Q-TOF and their antioxidant effects in human plasma. Biomed Pharmacother 2022; 150:112954. [PMID: 35447547 DOI: 10.1016/j.biopha.2022.112954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 11/16/2022] Open
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Caralluma quadrangula (Forssk.) N.E.Br. (Syns: = Stapelia quadrangula Forssk. = Monolluma quadrangula Forssk.) is an indigenous member of the genus Caralluma and it is a rather common species on rocky hillsides in the southwestern part of Saudi Arabia. Several members of this genus have found medicinal uses in the treatment of rheumatism, diabetes, leprosy and as antiseptics and disinfectants. All parts are edible but rather more bitter and can cause diarrhea. AIM OF THE STUDY The present report was tentatively elucidated the structure of acylated and non-acylated polyoxypregnane glycosides from Caralluma quadrangula. MATERIALS AND METHODS The analyses were performed using an electrospray-ionization quadrupole time-of-flight (ESI-Q-TOF) mass spectrometer in both positive and negative ionization modes to explore fragmentation pathways. The antioxidant and prooxidant properties of the different mobility portions of human plasma were evaluated in vitro using thiobarbituric acid reactive substance assay (TBARS). RESULTS The analyses showed sixty-five characteristic ion peaks which could be more efficient to assignment the aglycones and fragmentation sequences of sugar moieties. The used ionization modes provided consistent and/or complementary information for most of the pregnane glycosides, their fragmentation sequences, and their aglycones. A DFT Study was performed to elucidate the neutral loss of H2O molecules sequences from aglycones and the esterification linkage. CONCLUSIONS This report could be useful to reduce material consuming and time in phytochemistry analysis of the different medicinal plants. The two portions significantly depleted TBARS were subjected to autoperoxidation assay in the presence of hydrogen peroxide.
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Affiliation(s)
- Arafa I Hamed
- Phytochemistry Laboratory, Department of Botany, Faculty of Science, Aswan University, Aswan 81528, Egypt; Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass, Saudi Arabia; Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, ul. Czartoryskich 8, Pulawy 24-100, Poland.
| | - Ridha Ben Said
- Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass, Saudi Arabia; Laboratoire de Caractérisations, Applications et Modélisations des Matériaux, Faculté des Sciences de Tunis, Université Tunis El Manar, 2092, Tunis
| | - Mohamed Ali Ben Aissa
- Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass, Saudi Arabia
| | | | - Bogdan Kontek
- University of Lodz, Department of General Biochemistry, Institute of Biochemistry, Faculty of Biology and Environmental Protection, Pomorska 141/3, Lodz 90-236, Poland
| | - Mariusz Kowalczyk
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, ul. Czartoryskich 8, Pulawy 24-100, Poland
| | - Wieslaw Oleszek
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, ul. Czartoryskich 8, Pulawy 24-100, Poland
| | - Anna Stochmal
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, ul. Czartoryskich 8, Pulawy 24-100, Poland
| | - Ivona Kowalska
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, ul. Czartoryskich 8, Pulawy 24-100, Poland
| | - Beata Olas
- University of Lodz, Department of General Biochemistry, Institute of Biochemistry, Faculty of Biology and Environmental Protection, Pomorska 141/3, Lodz 90-236, Poland.
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Abdel-Sattar EA, Al-Hawshabi OS, Shalabi AA, El Halawany AM, Meselhy MR. Arabincosides A-D, pregnane glycosides isolated from Caralluma arabica. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Choucry M, Shalabi AA, El Halawany AM, El-Sakhawy FS, Zaiter A, Morita H, Chaimbault P, Abdel-Sattar E. New Pregnane Glycosides Isolated from Caralluma hexagona Lavranos as Inhibitors of α-Glucosidase, Pancreatic Lipase, and Advanced Glycation End Products Formation. ACS OMEGA 2021; 6:18881-18889. [PMID: 34337228 PMCID: PMC8320078 DOI: 10.1021/acsomega.1c02056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/21/2021] [Indexed: 05/04/2023]
Abstract
Caralluma hexagona Lavranos (Family Asclepiadaceae) is an endemic herb in Yemen and Saudi Arabia, traditionally used to treat diabetes, abdominal pain, and stomach ulcers. Different extracts, fractions, and main constituents of C. hexagona were evaluated for their inhibitory activity against key enzymes in diabetes and hyperlipidemia, i.e., α-glucosidase and pancreatic lipase. In addition, the antioxidative effect and inhibition of advanced glycation end products (AGEs) were also assayed. Using a bioguided approach, the crude aqueous, methanolic extracts, methylene chloride (CH2Cl2), Diaion HP20 50% MeOH (DCF-1), and 100% MeOH (DCF-2) fractions of C. hexagona were evaluated for their possible α-glucosidase and pancreatic lipase inhibition and antioxidant activity. In addition, inhibition of AGE generation using bovine serum albumin (BSA)-fructose, BSA-methylglyoxal, and arginine-methylglyoxal models was carried out. Moreover, the main constituents of the most active fraction were isolated and identified using different chromatographic and sprectroscopic methods. From the most active CH2Cl2 fraction, four new pregnane glycosides were isolated and identified as 12β-O-benzoyl 3β,8β,12β,14β,20-pentahydroxy-(20S)-pregn-5-ene-3-O-β-d-glucopyranosyl-(1 → 4)-O-β-d-digitaloside (1), 3β,8β,14β,20-tetrahydroxy-(20S)-pregn-5-ene-3-O-β-d-glucopyranosyl-(1 → 4)-O-β-d-digitaloside-20-O-3-isoval-β-d-glucopyranoside (2), 3β,8β,14β,20-tetrahydroxy-(20R)-pregn-5-ene-3-O-β-d-glucopyranosyl-(1 → 4)-O-β-d-digitaloside-20-O-3-isoval-4-benzoyl-β-d-glucopyranoside (3A), and 3β,8β,14β,20-tetrahydroxy-(20R)-pregn-5-ene-3-O-β-d-glucopyranosyl-(1 → 4)-O-β-d-digitaloside-20-O-3,4 di-benzoyl-β-d-glucopyranoside (3B). Among the tested samples, the highest trolox equivalent (TE) antioxidant capacity (TEAC) was observed for DCF-1 with values of 128.53 ± 5.07, 378.58 ± 5.19, and 106.71 ± 5.66 μM TE/mg using 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and ferric reducing antioxidant potential (FRAP) assays, respectively. The isolated apigenin-8-C-neohesperoside showed the highest antioxidant capacity (168.80 ± 1.80 and 278.21 ± 13.26 μM TE/mM) in DPPH and FRAP, respectively, while luteolin 4'-O-β-d-neohesperidoside had the highest TEAC (599.19 ± 9.57 μM TE/mM) in ABTS assay. Compounds 1, 2, and the mixture 3A and 3B inhibited α-glucosidase with IC50 values of 0.92 ± 0.02, 0.67 ± 0.01, and 0.74 ± 0.02 mM, respectively. In the AGE assays, DCF-1 showed the highest inhibitory effect in BSA-fructose and arginine-methylglyoxal models with IC50 values of 0.39 ± 0.02 and 0.77 ± 0.10 mg/mL, respectively. Among the isolated compounds, flavonoid compounds showed the highest antiglycation effect, while pregnanes revealed higher α-glucosidase inhibition. In conclusion, the current study revealed that C. hexagona is a promising Yemeni natural remedy, of which the major content of pregnane glycosides and flavonoids could be considered as a new therapeutic candidate targeting the metabolic syndrome.
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Affiliation(s)
- Mouchira
A. Choucry
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, El-Kasr El-Aini Street, 11771 Cairo, Egypt
| | - Akram A. Shalabi
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, El-Kasr El-Aini Street, 11771 Cairo, Egypt
| | - Ali M. El Halawany
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, El-Kasr El-Aini Street, 11771 Cairo, Egypt
| | - Fatma S. El-Sakhawy
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, El-Kasr El-Aini Street, 11771 Cairo, Egypt
| | - Ali Zaiter
- Université
de Lorraine, LCP-A2MC, 57000 Metz, France
| | - Hiroyuki Morita
- Institute
of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | | | - Essam Abdel-Sattar
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, El-Kasr El-Aini Street, 11771 Cairo, Egypt
- . Tel: +20-1065847211
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El Sayed AM, AbdElSattar E, Khalil MN. New calogenin pregnane glycoside derivative from Huernia saudi- arabica and its Lipase and α-Glucosidase Inhibitory Activities. Biomed Pharmacother 2020; 127:110143. [PMID: 32339923 DOI: 10.1016/j.biopha.2020.110143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 03/30/2020] [Accepted: 03/30/2020] [Indexed: 01/01/2023] Open
Abstract
As ongoing investigation of Huernia saudi-arabica D.V.Field (Asclepiadaceae), a new steroidal pregnane glycoside (Huernioside A) was isolated from dichloromethane fraction (DCM); it was identified as 3β, 11, 14β, 20(R)-tetrahydroxy-pregna-5,9(11)-diene-3-O-β-D-thevetopyranosyl-(1-4)-β-D-cymaropyranoside(HCP) through analysis of 1D, 2D NMR besides ESI-MS data. The alcoholic extract of the aerial part (ALE), DCM and HCP showed inhibitory potential against pancreatic lipase compared to orilstat. Among the tested samples, the ALE and HCP exhibited a promising pancreatic lipase inhibitory commotion through IC50 values of 0.61 ± 0.15, 1.23 ± 0.07 mg/ml (equivalent to 88.8 μM), respectively. HCP was prevailed to have a mixed mode of inhibition as exposed by enzyme kinetic studies. Hydrophobic interactions were the major forces involved in ligand enzyme interactions. In contrast, moderate α-glucosidase inhibitory activities were evidenced for ALE and HCP (% inhibition: 24.8 ± 1.8 and 26.6 ± 2.5, respectively) compared to acarbose. This investigation is the first to report on the possible in vitro anti-obesity and anti-diabetic impact of H. saudi-arabica.
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Affiliation(s)
- Abeer Mohamed El Sayed
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El-Einy Street, 11562, Cairo, Egypt.
| | - Essam AbdElSattar
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El-Einy Street, 11562, Cairo, Egypt.
| | - Mohammed Nabil Khalil
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El-Einy Street, 11562, Cairo, Egypt.
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El Sayed AM, Basyoni MM, ElGayed SH, El-Badry AA, Abdel-Sattar E. Pregnane glycoside from Huernia saudi-arabica as latent schistosomicidal mediator. Nat Prod Res 2020; 34:311-316. [DOI: 10.1080/14786419.2018.1528584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Abeer M. El Sayed
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Giza, Egypt
| | - Maha M. Basyoni
- Medical Parasitology Department, Kasr Al-Ainy Faculty of Medicine, Cairo University, Giza, Egypt
| | - Sabah H. ElGayed
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Giza, Egypt
| | - Ayman A. El-Badry
- Medical Parasitology Department, Kasr Al-Ainy Faculty of Medicine, Cairo University, Giza, Egypt
- Microbiology Department-Medical Parasitology Section, Faculty of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Essam Abdel-Sattar
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Giza, Egypt
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New polyoxypregnane glycosides from Aspidopterys obcordata vines with antitumor activity. Fitoterapia 2018; 129:203-209. [PMID: 29981397 DOI: 10.1016/j.fitote.2018.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/26/2018] [Accepted: 07/04/2018] [Indexed: 01/13/2023]
Abstract
Nine new polyoxypregnane glycosides, obcordatas A-I (1-9), were isolated from Aspidopterys obcordata Hemsl vines. Their structures were elucidated by extensive spectroscopic methods. Separated compounds were evaluated for antitumor activities against the human cancer cell lines AGS, SW480, HuH-7 and MCF-7, and compounds 1-6 and 9 showed selective cytotoxicity against HuH-7 cells with IC50 values of 8.7, 10.2, 7.5, 12.1, 16.5, 14.3, and 17.4 μM, respectively. Flow cytometry experiments showed that the effects of compound 1 on the cell cycle were attributable to cell cycle arrest at G1/S phase.
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9
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Zari TA, Al-Thebaiti MA. Effects of Caralluma russeliana stem extract on some physiological parameters in streptozotocin-induced diabetic male rats. Diabetes Metab Syndr Obes 2018; 11:619-631. [PMID: 30349340 PMCID: PMC6188000 DOI: 10.2147/dmso.s167293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The aim of this study was to investigate the effects of Caralluma russeliana stem extract on some physiological parameters in streptozotocin induced diabetes in male Wistar rats after 8 weeks. MATERIALS AND METHODS The experimental rats were randomly assigned into four groups. Rats of group 1 were normal controls. Rats of group 2 were diabetic controls. Rats of group 3 were diabetic rats treated with C. russeliana stem extract. Rats of group 4 were non-diabetic rats, subjected to C. russeliana stem extract. RESULTS The lowest body weight gain was noticed in diabetic rats of group 2. Serum glucose, triglycerides, cholesterol, low-density lipoprotein cholesterol, very low-density lipoprotein cholesterol, alanine aminotransferase, aspartate aminotransferase, ALP, total bilirubin, creatinine, blood urea nitrogen (BUN) and uric acid levels were significantly elevated in diabetic rats of group 2; however, total serum protein, albumin and high-density lipoprotein cholesterol were significantly reduced in diabetic rats of group 2. CONCLUSION Treatments with C. russeliana stem extract in diabetic rats revealed notable diminishing and protecting effects of physiological modifications. Therefore, this study revealed the significance of using C. russeliana stem extract as a promising remedial agent to treat diabetes and its complications.
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Affiliation(s)
- Talal A Zari
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia,
| | - Mesfer A Al-Thebaiti
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia,
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Wu X, Zhu L, Ma J, Ye Y, Lin G. Adduct ion-targeted qualitative and quantitative analysis of polyoxypregnanes by ultra-high pressure liquid chromatography coupled with triple quadrupole mass spectrometry. J Pharm Biomed Anal 2017; 145:127-136. [PMID: 28662480 DOI: 10.1016/j.jpba.2017.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 06/13/2017] [Accepted: 06/17/2017] [Indexed: 11/29/2022]
Abstract
Polyoxypregnane and its glycosides (POPs) are frequently present in plants of Asclepiadaceae family, and have a variety of biological activities. There is a great need to comprehensively profile these phytochemicals and to quantify them for monitoring their contents in the herbs and the biological samples. However, POPs undergo extensive adduct ion formation in ESI-MS, which has posed a challenge for qualitative and quantitative analysis of POPs. In the present study, we took the advantage of such extensive adduct ion formation to investigate the suitability of adduct ion-targeted analysis of POPs. For the qualitative analysis, we firstly demonstrated that the sodium and ammonium adduct ion-targeted product ion scans (PIS) provided adequate MS/MS fragmentations for structural characterization of POPs. Aided with precursor ion (PI) scans, which showed high selectivity and sensitivity and improved peak assignment confidence in conjunction with full scan (FS), the informative adduct ion-targeted PIS enabled rapid POPs profiling. For the quantification, we used formic acid rather than ammonium acetate as an additive in the mobile phase to avoid simultaneous formation of sodium and ammonium adduct ions, and greatly improved reproducibility of MS response of POPs. By monitoring the solely formed sodium adduct ions [M+Na]+, a method for simultaneous quantification of 25 POPs in the dynamic multiple reaction monitoring mode was then developed and validated. Finally, the aforementioned methods were applied to qualitative and quantitative analysis of POPs in the extract of a traditional Chinses medicinal herb, Marsdenia tenacissima (Roxb.) Wight et Arn., and in the plasma obtained from the rats treated with this herb. The results demonstrated that adduct ion formation could be optimized for the qualitative and quantitative analysis of POPs, and our developed PI/FS-PIS scanning and sole [M+Na]+ ion monitoring significantly improved the analysis of POPs in both herbal and biological samples. This study also provides implications for the analysis of other compounds which undergo extensive adduct ion formation in ESI-MS.
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Affiliation(s)
- Xu Wu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China; Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, PR China
| | - Lin Zhu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China
| | - Jiang Ma
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China
| | - Yang Ye
- Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China; State Key Laboratory of Drug Research and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China
| | - Ge Lin
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China.
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Bertrand S, Azzollini A, Nievergelt A, Boccard J, Rudaz S, Cuendet M, Wolfender JL. Statistical Correlations between HPLC Activity-Based Profiling Results and NMR/MS Microfraction Data to Deconvolute Bioactive Compounds in Mixtures. Molecules 2016; 21:259. [PMID: 26927035 PMCID: PMC6274519 DOI: 10.3390/molecules21030259] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/18/2016] [Accepted: 01/25/2016] [Indexed: 11/20/2022] Open
Abstract
Recent approaches in natural product (NP) research are leading toward the discovery of bioactive chemical entities at the microgram level. In comparison to classical large scale bioassay-guided fractionation, the use of LC-MS metabolite profiling in combination with microfractionation for both bioactivity profiling and NMR analysis, allows the identification of bioactive compounds at a very early stage. In that context, this study aims to assess the potential of statistic correlation analysis to enable unambiguous identification of features related to bioactive compounds in mixtures, without the need for complete isolation. For that purpose, a mixture of NPs was microfractionated by rapid small-scale semi-preparative HPLC for proof-of-concept. UHPLC-ESI-TOFMS profiles, micro-flow CapNMR spectra and a cancer chemopreventive assay carried out on every microfraction were analysed by statistical correlations.
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Affiliation(s)
- Samuel Bertrand
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
- Groupe Mer, Molécules, Santé-EA 2160, UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes, 9 Rue Bias, BP 53508, F-44035 Nantes, France.
| | - Antonio Azzollini
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
| | - Andreas Nievergelt
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
| | - Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
| | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
| | - Muriel Cuendet
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
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Abstract
Four new pregnane glycosides 1-4 were isolated from the ethanol extract of the stem of Gymnema sylvestre and named gymsylvestrosides A-D. Hydrolysis of compound 1 under the catalysis of Aspergilus niger β-glucosidase afforded compound 5 (gymsylvestroside E). Their structures were determined by spectroscopic methods such as HRESIMS, 1D and 2D NMR, as well as HMQC-TOCSY experiment. Compounds 1-4 were screened for Saccharomyces cerevisiae α-glucosidase inhibitory activity.
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Wolfender JL, Marti G, Thomas A, Bertrand S. Current approaches and challenges for the metabolite profiling of complex natural extracts. J Chromatogr A 2015; 1382:136-64. [DOI: 10.1016/j.chroma.2014.10.091] [Citation(s) in RCA: 352] [Impact Index Per Article: 39.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 10/23/2014] [Accepted: 10/26/2014] [Indexed: 12/11/2022]
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Elsebai MF, Mohamed IELT. New pregnane glycoside derivative fromCaralluma retrospiciens(Ehrenb). Nat Prod Res 2015; 29:1426-31. [DOI: 10.1080/14786419.2014.1003186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Eugster PJ, Boccard J, Debrus B, Bréant L, Wolfender JL, Martel S, Carrupt PA. Retention time prediction for dereplication of natural products (CxHyOz) in LC-MS metabolite profiling. PHYTOCHEMISTRY 2014; 108:196-207. [PMID: 25457501 DOI: 10.1016/j.phytochem.2014.10.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 10/02/2014] [Accepted: 10/08/2014] [Indexed: 06/04/2023]
Abstract
The detection and early identification of natural products (NPs) for dereplication purposes require efficient, high-resolution methods for the profiling of crude natural extracts. This task is difficult because of the high number of NPs in these complex biological matrices and because of their very high chemical diversity. Metabolite profiling using ultra-high pressure liquid chromatography coupled to high-resolution mass spectrometry (UHPLC–HR-MS) is very efficient for the separation of complex mixtures and provides molecular formula information as a first step in dereplication. This structural information alone or even combined with chemotaxonomic information is often not sufficient for unambiguous metabolite identification. In this study, a representative set of 260 NPs containing C, H, and O atoms only was analysed in generic UHPLC–HR-MS profiling conditions. Two easy to use quantitative structure retention relationship (QSRR) models were built based on the measured retention time and on eight simple physicochemical parameters calculated from the structures. First, an original approach using several partial least square (PLS) regressions according to the phytochemical classes provided satisfactory results with an easy calculation. Secondly, a unique artificial neural network (ANN) model provided similar results on the whole set of NPs but required dedicated software. The retention prediction methods described in this study were found to improve the level of confidence of the identification of given analytes among putative isomeric structures. Its applicability was verified for the dereplication of NPs in model plant extracts.
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Srisurichan S, Puthong S, Pornpakakul S. Pregnane-type steroidal glycosides from Gymnema griffithii Craib. PHYTOCHEMISTRY 2014; 106:197-206. [PMID: 25053002 DOI: 10.1016/j.phytochem.2014.06.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 06/03/2014] [Accepted: 06/04/2014] [Indexed: 06/03/2023]
Abstract
Eight pregnane-type steroidal glycosides substituted with ortho-acetate groups were isolated from the methanolic extract of the pericarp of Gymnema griffithii fruits, and named gymnemogriffithosides A-H. Their structures were determined by spectroscopic analysis (one and two dimensional nuclear magnetic resonance, high resolution electrospray ionization mass spectrometry and attenuated total reflectance-Fourier transformed infrared spectroscopy), while the absolute structure of the steroidal skeleton of one of these was additionally determined using Mosher's method. All compounds were evaluated for their in vitro (i) cytotoxic effects against five human tumor cell lines (BT 474, Chago, Hep-G2, KATO-III and SW620) and (ii) α-glucosidase inhibitory activity.
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Affiliation(s)
- Suphongphan Srisurichan
- Research Centre for Bioorganic Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand
| | - Songchan Puthong
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Surachai Pornpakakul
- Research Centre for Bioorganic Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand.
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Adnan M, Jan S, Mussarat S, Tariq A, Begum S, Afroz A, Shinwari ZK. A review on ethnobotany, phytochemistry and pharmacology of plant genus C
aralluma R. Br. J Pharm Pharmacol 2014; 66:1351-68. [DOI: 10.1111/jphp.12265] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 03/16/2014] [Indexed: 11/29/2022]
Abstract
Abstract
Objectives
C aralluma is a xerophytic genus used as traditional medicine for the treatment of diabetes, inflammation, leprosy, obesity and rheumatism. Objectives of this review are to establish a relationship between traditional uses and scientific studies by critically evaluating the available fragmented literature on ethnobotany, pharmacology, phytochemistry and toxicology of genus Caralluma.
Key findings
Ethnomedical uses of Caralluma have been recorded from various countries such as China, India, Iran and Pakistan for six major classes of diseases including diabetes and gastrointestinal disorders. This review indicated the efficacy of genus Caralluma in several in vitro and in vivo pharmacological properties such as antimicrobial, antioxidant and anticancer activity. These bioactivity might be due to the presence of certain classes of compounds in genus Caralluma including pregnane glycosides, flavonoid glycosides and flavones.
Summary
Traditional uses and scientific evaluation of Caralluma indicates that it is one of the most widely used genus in some parts of the world. Further studies on the structural activity relationship of some of the isolated compound may improve their biological potency as well as scientific exploitation of traditional uses of the genus.
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Affiliation(s)
- Muhammad Adnan
- Department of Botany, Kohat University of Science and Technology, Kohat, Pakistan
| | - Saleem Jan
- Department of Chemistry, University of Science and Technology Bannu, Bannu, Pakistan
| | - Sakina Mussarat
- Department of Botany, Kohat University of Science and Technology, Kohat, Pakistan
| | - Akash Tariq
- Department of Botany, Kohat University of Science and Technology, Kohat, Pakistan
| | - Shaheen Begum
- Department of Environmental Sciences, Fatima Jinnah Women University, Punjab, Pakistan
| | - Anila Afroz
- Department of Botany, Kohat University of Science and Technology, Kohat, Pakistan
| | - Zabta Khan Shinwari
- Department of Biotechnology and Bioinformatics, Quaid-i-Azam University Islamabad, Islamabad, Pakistan
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Bertrand S, Petit C, Marcourt L, Ho R, Gindro K, Monod M, Wolfender JL. HPLC profiling with at-line microdilution assay for the early identification of anti-fungal compounds in plants from French Polynesia. PHYTOCHEMICAL ANALYSIS : PCA 2014; 25:106-112. [PMID: 24108497 DOI: 10.1002/pca.2473] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 06/04/2013] [Accepted: 07/23/2013] [Indexed: 06/02/2023]
Abstract
INTRODUCTION The search for anti-fungal compounds has maintained a scientific interest notably due to existing difficulties in the treatment of mycoses and their increasing occurrence in hospitals. OBJECTIVE Development of a simple method to rapidly identify anti-fungal compounds in crude plant extracts based on a HPLC microfractionation approach combined with an at-line anti-Candida assay. METHODS The scale of the semi-preparative HPLC microfractionation was adapted to fit the sensitivity of the Candida albicans anti-fungal in a 96-well microdilution assay. This format is also compatible for MS and NMR dereplication of the active compounds. RESULTS Based on the screening of 12 crude extracts of plants from French Polynesia, three plants, which displayed various levels of anti-fungal activities, were selected to assess the efficiency of the HPLC anti-fungal profiling and the scale necessary for microfractionation. The same anti-Candida assay was performed on the HPLC microfractions collected using a generic profiling method. Analysis of active microfractions by MS and NMR issued from the most active extract enabled an efficient dereplication of the compounds responsible for the anti-fungal activity. CONCLUSION A generic HPLC anti-fungal profiling method was developed which revealed that only 50 mg of crude extract were sufficient for a rapid identification of compound(s) responsible for the anti-Candida activity. This approach was illustrated by the study of Alphitonia zizyphoides, a plant traditionally used to treat dermatomycoses.
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Affiliation(s)
- Samuel Bertrand
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211, Geneva 4, Switzerland
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Giacomelli E, Bertrand S, Nievergelt A, Zwick V, Simoes-Pires C, Marcourt L, Rivara-Minten E, Cuendet M, Bisio A, Wolfender JL. Cancer chemopreventive diterpenes from Salvia corrugata. PHYTOCHEMISTRY 2013; 96:257-264. [PMID: 24120298 DOI: 10.1016/j.phytochem.2013.09.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 09/07/2013] [Accepted: 09/10/2013] [Indexed: 06/02/2023]
Abstract
NMR and NP-HPLC-UV profiling of the exudate of Salvia corrugata revealed that its secondary metabolite composition was largely dominated by α-hydroxy-β-isopropyl-benzoquinone diterpenoids. Among them, four diterpenes not described previously were isolated and identified as fruticulin C (3), 7α-methoxy-19-acetoxy-royleanone (4), 7α,19-diacetoxy-royleanone (5), and 7-dehydroxy-conacytone (7). In addition, the known diterpenes fruticulin A (1), demethyl-fruticulin A (2) and 7α-O-methyl-conacytone (6) were also obtained. The isolated compounds were evaluated for their cancer chemopreventive activity by measuring quinone reductase induction activity and histone deacetylase inhibition. Three compounds (1, 2 and 5) showed promising activity.
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Affiliation(s)
- Emanuela Giacomelli
- Department of Pharmacy, University of Genoa, via Brigata Salerno 13, 16147 Genoa, Italy
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Abdallah HM, Osman AMM, Almehdar H, Abdel-Sattar E. Acylated pregnane glycosides from Caralluma quadrangula. PHYTOCHEMISTRY 2013; 88:54-60. [PMID: 23312459 DOI: 10.1016/j.phytochem.2012.12.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 12/08/2012] [Accepted: 12/10/2012] [Indexed: 05/20/2023]
Abstract
In a previous study, the methanolic extract as well as the chloroform fraction of the aerial parts of Caralluma quadrangula (Forssk.) N.E.Br. indigenous to Saudi Arabia showed significant in vitro cytotoxic activity against breast cancer (MCF7) cell line. In a biologically-guided fractionation approach, four acylated pregnane glycosides were isolated from the chloroform fraction of C. quadrangula. The structures of the isolated compounds were elucidated by the analysis of their MS and NMR data. The compounds were identified as 12,20-di-O-benzoylboucerin 3-O-β-D-digitoxopyranosyl-(1→4)-β-D-canaropyranosyl-(1→4)-β-D-cymaropyranoside (1), 12,20-di-O-benzoylboucerin 3-O-β-D-cymaropyranosyl-(1→4)-β-D-canaropyranosyl-(1→4)-β-D-cymaropyranoside (2), 12,20-di-O-benzoylboucerin 3-O-β-D-glucopyranosyl-(1→4)-β-D-digitoxopyranosyl-(1→4)-β-D-canaropyranosyl-(1→4)-β-D-cymaropyranoside (3) and 12,20-di-O-benzoyl-3β,5α,12β,14β,20-pentahydroxy-(20R)-pregn-6-ene 3-O-β-D-glucopyranosyl-(1→4)-β-D-digitoxopyranosyl-(1→4)-β-D-canaropyranosyl-(1→4)-β-D-cymaropyranoside (4). The isolated compounds were tested for their cytotoxic activity against breast cancer (MCF7) cell line.
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Affiliation(s)
- Hossam M Abdallah
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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