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Inhibitory effect of esculetin on free-fatty-acid-induced lipid accumulation in human HepG2 cells through activation of AMP-activated protein kinase. Food Sci Biotechnol 2017; 26:263-269. [PMID: 30263537 DOI: 10.1007/s10068-017-0035-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/08/2016] [Accepted: 12/16/2016] [Indexed: 02/08/2023] Open
Abstract
This study aimed to determine the lipid-lowering effect of esculetin (6,7-dihydroxycoumarin), a coumarin derivative, using a cell model of steatosis induced by a mixture of free fatty acids (FFAs). Esculetin dose-dependently inhibited intracellular lipid accumulation by down-regulating the protein expression of lipogenic genes such as sterol regulatory element-binding protein-1c (SREBP1c) and fatty acid synthase (FAS) in FFAs-induced HepG2 cells. Moreover, esculetin significantly elevated the activation of the adenosine monophosphate-activated protein kinase (AMPK) signaling pathways in HepG2 hepatocytes. The anti-lipogenic effects of esculetin mediated by AMPK activation were abolished when FFAs-induced HepG2 cells were treated with a specific inhibitor of AMPK, i.e., compound C. These results suggest that esculetin attenuates hepatic lipid accumulation by inhibiting lipogenesis through the modulation of AMPK signaling pathway on FFAs-induced steatosis in HepG2 cells and may be used for the prevention of nonalcoholic fatty liver disease (NAFLD).
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Prasanna R, Ashraf EA, Essam MA. Chamomile and oregano extracts synergistically exhibit antihyperglycemic, antihyperlipidemic, and renal protective effects in alloxan-induced diabetic rats. Can J Physiol Pharmacol 2017; 95:84-92. [DOI: 10.1139/cjpp-2016-0189] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The bio-activities of separate Matricaria chamomilla (chamomile) and Origanum vulgare (oregano) are well studied; however, the combined effects of both natural products in animal diabetic models are not well characterized. In this study, alloxan-induced male albino rats were treated with single dose aqueous suspension of chamomile or oregano at dose level of either 150 or 300 mg/kg body mass or as equal parts as combination by stomach tube for 6 weeks. After treatment, blood samples were assessed for diabetic, renal, and lipid profiles. Insulin, amylase activity, and diabetic renal apoptosis were further evaluated. Treatment with higher dose of the extracts (300 mg/kg) as individual or as mixture of low doses (150 mg/kg of both the extracts) had significant mass gain, hypoglycemic effect (p ≤ 0.05) with decreased amylase activity and increased serum insulin levels. Restoration of renal profile, lipid profile with increase in HDL-c (p ≤ 0.05) along with reversal of pro-apoptotic Bax and anti-apoptotic Bcl-2 were well observed with 300 mg/kg mixture, showing synergistic activity of the extracts compared with individual low dose of 150 mg/kg. Collectively, our results indicate that combination of chamomile and oregano extracts will form a new class of drugs to treat diabetic complications.
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Affiliation(s)
- Rajagopalan Prasanna
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | | | - Mahmoud A. Essam
- Clinical Pathology Department, Faculty of Veterinary Medicine, Zagazig University, Egypt
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Fazili A, Gholami S, Minaie Zangi B, Seyedjafari E, Gholami M. In Vivo Differentiation of Mesenchymal Stem Cells into Insulin Producing Cells on Electrospun Poly-L-Lactide Acid Scaffolds Coated with Matricaria chamomilla L. Oil. CELL JOURNAL 2016; 18:310-21. [PMID: 27602312 PMCID: PMC5011318 DOI: 10.22074/cellj.2016.4558] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/15/2016] [Indexed: 01/22/2023]
Abstract
OBJECTIVE This study examined the in vivo differentiation of mesenchymal stem cells (MSCs) into insulin producing cells (IPCs) on electrospun poly-L-lactide acid (PLLA) scaffolds coated with Matricaria chammomila L. (chamomile) oil. MATERIALS AND METHODS In this interventional, experimental study adipose MSCs (AMSCs) were isolated from 12 adult male New Zealand white rabbits and characterized by flow cytometry. AMSCs were subsequently differentiated into osteogenic and adipogenic lines. Cells were seeded onto either a PLLA scaffold (control) or PLLA scaffold coated with chamomile oil (experimental). A total of 24 scaffolds were inserted into the pancreatic area of each rabbit and placement was confirmed by ultrasound. After 21 days, immunohistochemistry analysis of insulin-producing like cells on protein levels confirmed insulin expression of insulin producing cells (IPSCs). Real-time polymerase chain reaction (PCR) determined the expressions of genes related to pancreatic endocrine development and function. RESULTS Fourier transform infrared spectroscopy (FTIR) results confirmed the existence of oil on the surface of the PLLA scaffold. The results showed a new peak at 2854 cm(-1) for the aliphatic CH2 bond. Pdx1 expression was 0.051 ± 0.007 in the experimental group and 0.009 ± 0.002 in the control group. There was significantly increased insulin expression in the scaffold coated with chamomile oil (0.09 ± 0.001) compared to control group (0.063 ± 0.009, P≤0.05). Both groups expressed Ngn3 and Pdx1 specific markers and pancreatic tissue was observed at 21 days post transplantation. CONCLUSION The pancreatic region is an optimal site for differentiation of AMSCs to IPCs. Chamomile oil (as an antioxidant agent) can affect cell adhesion to the scaffold and increase cell differentiation. In addition, the oil may lead to increased blood glucose uptake in pathways in the muscles, liver and fatty tissue of a diabetic animal model by some probable molecular mechanisms.
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Affiliation(s)
- Afsaneh Fazili
- Department of Anatomy, School of Veterinary Medicine, University of Shiraz , Shiraz, Iran
| | - Soghra Gholami
- Department of Anatomy, School of Veterinary Medicine, University of Shiraz , Shiraz, Iran
| | - Bagher Minaie Zangi
- Department of Histology, Medical Sciences Faculty, Tehran University of Medical Sciences, Tehran, Iran
| | - Ehsan Seyedjafari
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Mahdi Gholami
- Faculty of Pharmacy and Pharmaceutical Sciences, Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Parlinska-Wojtan M, Kus-Liskiewicz M, Depciuch J, Sadik O. Green synthesis and antibacterial effects of aqueous colloidal solutions of silver nanoparticles using camomile terpenoids as a combined reducing and capping agent. Bioprocess Biosyst Eng 2016; 39:1213-23. [PMID: 27083587 PMCID: PMC4945692 DOI: 10.1007/s00449-016-1599-4] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Accepted: 03/24/2016] [Indexed: 11/30/2022]
Abstract
Green synthesis method using camomile extract was applied to synthesize silver nanoparticles to tune their antibacterial properties merging the synergistic effect of camomile and Ag. Scanning transmission electron microscopy revealed that camomile extract (CE) consisted of porous globular nanometer sized structures, which were a perfect support for Ag nanoparticles. The Ag nanoparticles synthesized with the camomile extract (AgNPs/CE) of 7 nm average sizes, were uniformly distributed on the CE support, contrary to the pure Ag nanoparticles synthesized with glucose (AgNPs/G), which were over 50 nm in diameter and strongly agglomerated. The energy dispersive X-ray spectroscopy chemical analysis showed that camomile terpenoids act as a capping and reducing agent being adsorbed on the surface of AgNPs/CE enabling their reduction from Ag(+) and preventing them from agglomeration. Fourier transform infrared and ultraviolet-visible spectroscopy measurements confirmed these findings, as the spectra of AgNPs/CE, compared to pure CE, did not contain the 1109 cm(-1) band, corresponding to -C-O groups of terpenoids and the peaks at 280 and 320 nm, respectively. Antibacterial tests using four bacteria strains showed that the AgNPs/CE performed five times better compared to CE AgNPs/G samples, reducing totally all the bacteria in 2 h.
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Affiliation(s)
| | - Małgorzata Kus-Liskiewicz
- Biotechnology Centre for Applied and Fundamental Sciences, Department of Biotechnology, University of Rzeszow, Sokołowska Street 26, 36-100, Kolbuszowa, Poland
| | - Joanna Depciuch
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342, Kraków, Poland
| | - Omowunmi Sadik
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
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Oliveira BV, Barros Silva PG, Nojosa JDS, Brizeno LAC, Ferreira JM, Sousa FB, Mota MRL, Alves APNN. TNF-alpha expression, evaluation of collagen, and TUNEL of Matricaria recutita L. extract and triamcinolone on oral ulcer in diabetic rats. J Appl Oral Sci 2016; 24:278-90. [PMID: 27383710 PMCID: PMC5022216 DOI: 10.1590/1678-775720150481] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 03/05/2016] [Accepted: 03/15/2016] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE to evaluate the influence of Tumor Necrosis Factor alpha (TNF-α) and apoptosis in rats with DM treated with chamomile extract or triamcinolone. MATERIAL AND METHODS Wistar male rats (210.0±4.2 g) were divided into five groups: negative control group (NCG) without diabetes; positive control group (PCG) with DM (alloxan, 45 mg/kg); and groups treated with chamomile extract (normoglycemic= NCG group and diabetic= DCG group) and with triamcinolone (TG). Traumatic ulcers were performed on all animals that received topical triamcinolone, chamomile extract or saline 12/12 hours for ten days. RESULTS On days five and ten the animals were euthanized and the ulcers were analyzed by light microscopy, TUNEL assay, and immunohistochemically (TNF-α). The NCG (p=0.0062), PCG (p=0.0285), NCG (p=0.0041), and DCG (p<0.0001) groups were completely healed on the 10th day, however, there was no healing on the TG (p=0.5127) group. The TNF-α expression showed a significant reduction from the 5th to the 10th day in NCG (p=0.0266) and DCG (p=0.0062). In connective tissue, the TUNEL assay showed a significant reduction in the number of positive cells in NCG (p=0.0273) and CNG (p=0.0469) and in the epithelium only in CDG (p=0.0320). CONCLUSIONS Chamomile extract can optimize the healing of traumatic oral ulcers in diabetic rats through the reduction of apoptosis in the epithelium and TNF-α expression.
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Affiliation(s)
- Bruna Vasconcelos Oliveira
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
| | - Paulo Goberlânio Barros Silva
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
| | - Jacqueline de Santiago Nojosa
- - Universidade Federal do Ceará, Setor de Cariologia e Odontologia Restauradora, Departamento de Odontologia Restauradora, Fortaleza, CE, Brasil
| | - Luiz André Cavalcante Brizeno
- - Universidade Estadual do Ceará, Setor de Fisiologia e Farmacologia, Departamento de Ciências Biomédicas, Fortaleza, CE, Brasil
| | | | - Fabrício Bitú Sousa
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
| | - Mário Rogério Lima Mota
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
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Chemical Constituents of Malaysian U. cordata var. ferruginea and Their in Vitro α-Glucosidase Inhibitory Activities. Molecules 2016; 21:molecules21050525. [PMID: 27128898 PMCID: PMC6274048 DOI: 10.3390/molecules21050525] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 03/29/2016] [Accepted: 04/05/2016] [Indexed: 11/21/2022] Open
Abstract
Continuing our interest in the Uncaria genus, the phytochemistry and the in-vitro α-glucosidase inhibitory activities of Malaysian Uncaria cordata var. ferruginea were investigated. The phytochemical study of this plant, which employed various chromatographic techniques including recycling preparative HPLC, led to the isolation of ten compounds with diverse structures comprising three phenolic acids, two coumarins, three flavonoids, a terpene and an iridoid glycoside. These constituents were identified as 2-hydroxybenzoic acid or salicylic acid (1), 2,4-dihydroxybenzoic acid (2), 3,4-dihydroxybenzoic acid (3), scopoletin or 7-hydroxy-6-methoxy-coumarin (4), 3,4-dihydroxy-7-methoxycoumarin (5), quercetin (6), kaempferol (7), taxifolin (8), loganin (9) and β-sitosterol (10). Structure elucidation of the compounds was accomplished with the aid of 1D and 2D Nuclear Magnetic Resonance (NMR) spectral data and Ultraviolet-Visible (UV-Vis), Fourier Transform Infrared (FTIR) spectroscopy and mass spectrometry (MS). In the α-glucosidase inhibitory assay, the crude methanolic extract of the stems of the plant and its acetone fraction exhibited strong α-glucosidase inhibition activity of 87.7% and 89.2%, respectively, while its DCM fraction exhibited only moderate inhibition (75.3%) at a concentration of 1 mg/mL. The IC50 values of both fractions were found to be significantly lower than the standard acarbose suggesting the presence of potential α-glucosidase inhibitors. Selected compounds isolated from the active fractions were then subjected to α-glucosidase assay in which 2,4-dihydroxybenzoic acid and quercetin showed strong inhibitory effects against the enzyme with IC50 values of 549 and 556 μg/mL compared to acarbose (IC50 580 μg/mL) while loganin and scopoletin only showed weak α-glucosidase inhibition of 44.9% and 34.5%, respectively. This is the first report of the isolation of 2-hydroxybenzoic acid, 2,4-dihydroxybenzoic acid and loganin from the genus and the first report of the α-glucosidase inhibitory potential of 2,4-dihydroxybenzoic acid.
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Kim CS, Kim J, Lee YM, Sohn E, Kim JS. Esculetin, a Coumarin Derivative, Inhibits Aldose Reductase Activity in vitro and Cataractogenesis in Galactose-Fed Rats. Biomol Ther (Seoul) 2016; 24:178-83. [PMID: 26902086 PMCID: PMC4774499 DOI: 10.4062/biomolther.2015.101] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 10/24/2015] [Accepted: 11/20/2015] [Indexed: 11/05/2022] Open
Abstract
Naturally occurring coumarin compounds have received substantial attention due to their pharmaceutical effects. Esculetin is a coumarin derivative and a polyphenol compound that is used in a variety of therapeutic and pharmacological strategies. However, its effect on aldose reductase activity remains poorly understood. In this study, the potential beneficial effects of esculetin on lenticular aldose reductase were investigated in galactose-fed (GAL) rats, an animal model of sugar cataracts. Cataracts were induced in Sprague-Dawley (SD) rats via a 50% galactose diet for 2 weeks, and groups of GAL rats were orally treated with esculetin (10 or 50 mg/kg body weight). In vehicle-treated GAL rats, lens opacification was observed, and swelling and membrane rupture of the lens fiber cells were increased. Additionally, aldose reductase was highly expressed in the lens epithelium and superficial cortical fibers during cataract development in the GAL rats. Esculetin reduced rat lens aldose reductase (RLAR) activity in vitro, and esculetin treatment significantly inhibited lens opacity, as well as morphological alterations, such as swelling, vacuolation and liquefaction of lens fibers, via the inhibition of aldose reductase in the GAL rats. These results indicate that esculetin is a useful treatment for galactose-induced cataracts.
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Affiliation(s)
- Chan-Sik Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Junghyun Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Yun Mi Lee
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Eunjin Sohn
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Jin Sook Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
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Martín-Aragón S, Villar Á, Benedí J. Age-dependent effects of esculetin on mood-related behavior and cognition from stressed mice are associated with restoring brain antioxidant status. Prog Neuropsychopharmacol Biol Psychiatry 2016; 65:1-16. [PMID: 26290950 DOI: 10.1016/j.pnpbp.2015.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 08/06/2015] [Accepted: 08/12/2015] [Indexed: 12/20/2022]
Abstract
Dietary antioxidants might exert an important role in the aging process by relieving oxidative damage, a likely cause of age-associated brain dysfunctions. This study aims to investigate the influence of esculetin (6,7-dihydroxycoumarin), a naturally occurring antioxidant in the diet, on mood-related behaviors and cognitive function and its relation with age and brain oxidative damage. Behavioral tests were employed in 11-, 17- and 22-month-old male C57BL/6J mice upon an oral 35day-esculetin treatment (25mg/kg). Activity of antioxidant enzymes, GSH and GSSG levels, GSH/GSSG ratio, and mitochondrial function were analyzed in brain cortex at the end of treatment in order to assess the oxidative status related to mouse behavior. Esculetin treatment attenuated the increased immobility time and enhanced the diminished climbing time in the forced swim task elicited by acute restraint stress (ARS) in the 11- and 17-month-old mice versus their counterpart controls. Furthermore, ARS caused an impairment of contextual memory in the step-through passive avoidance both in mature adult and aged mice which was partially reversed by esculetin only in the 11-month-old mice. Esculetin was effective to prevent the ARS-induced oxidative stress mostly in mature adult mice by restoring antioxidant enzyme activities, augmenting the GSH/GSSG ratio and increasing cytochrome c oxidase (COX) activity in cortex. Modulation of the mood-related behavior and cognitive function upon esculetin treatment in a mouse model of ARS depends on age and is partly due to the enhancement of redox status and levels of COX activity in cortex.
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Affiliation(s)
- Sagrario Martín-Aragón
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
| | - Ángel Villar
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Juana Benedí
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
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59
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Chamomile tea improves glycemic indices and antioxidants status in patients with type 2 diabetes mellitus. Nutrition 2016; 32:66-72. [DOI: 10.1016/j.nut.2015.07.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/05/2015] [Accepted: 07/21/2015] [Indexed: 11/19/2022]
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60
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Oniszczuk A, Wojtunik K, Oniszczuk T, Wójtowicz A, Mościcki L, Waksmundzka-Hajnos M. Radical Scavenging Activity of Instant Grits with Addition of Chamomile Flowers Determined by TLC–DPPH• Test and by Spectrophotometric Method. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1028294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Anna Oniszczuk
- Department of Inorganic Chemistry, Medical University of Lublin, Lublin, Poland
| | - Karolina Wojtunik
- Department of Inorganic Chemistry, Medical University of Lublin, Lublin, Poland
| | - Tomasz Oniszczuk
- Department of Food Process Engineering, University of Life Sciences in Lublin, Lublin, Poland
| | - Agnieszka Wójtowicz
- Department of Food Process Engineering, University of Life Sciences in Lublin, Lublin, Poland
| | - Leszek Mościcki
- Department of Food Process Engineering, University of Life Sciences in Lublin, Lublin, Poland
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Howrey BT, Peek MK, McKee JM, Raji MA, Ottenbacher KJ, Markides KS. Chamomile Consumption and Mortality: A Prospective Study of Mexican Origin Older Adults. THE GERONTOLOGIST 2015; 56:1146-1152. [PMID: 26035879 DOI: 10.1093/geront/gnv051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 03/27/2015] [Indexed: 01/13/2023] Open
Abstract
PURPOSE Approximately 20% of adults use some kind of herbal; however, little data exists from population-based study or clinical trials to support effectiveness of most herbal products. Chamomile is a commonly used herb among older adults of Mexican origin. We examined the effects of herbal chamomile consumption on mortality among older adults of Mexican origin. METHODS AND DESIGN A sample from the Hispanic Established Populations for Epidemiologic Study of the Elderly, a population-based study of noninstitutionalized Mexican Americans aged 65 and older from five Southwestern states (Texas, California, New Mexico, Colorado, and Arizona). We included all men and women from 2000 to 2007 (n = 1,677). RESULTS Chamomile was used by 14% of the sample. Cox proportional hazards regression analyses showed that chamomile was associated with a decreased risk of mortality in the total sample (hazard ratio [HR] 0.71, 95% confidence interval [CI] 0.55-0.92) and for women (HR 0.67, 95% CI 0.49-0.92) but not for men. In models adjusted for sociodemographic variables, health behaviors, and chronic conditions, chamomile remained significantly associated with reduced mortality in women (HR 0.72, 95% CI 0.53-0.98). IMPLICATIONS The use of chamomile shows protective effects against mortality in this sample of older adults of Mexican origin for women. Further research is warranted in other populations to determine if these effects are consistent.
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Affiliation(s)
- Bret T Howrey
- Department of Family Medicine, University of Texas Medical Branch, Galveston.
| | - M Kristen Peek
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston
| | - Juliet M McKee
- Department of Family Medicine, University of Texas Medical Branch, Galveston
| | - Mukaila A Raji
- Division of Geriatrics, University of Texas Medical Branch, Galveston
| | - Kenneth J Ottenbacher
- Division of Rehabilitation Sciences, The University of Texas Medical Branch, Galveston
| | - Kyriakos S Markides
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston
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Mehmood MH, Munir S, Khalid UA, Asrar M, Gilani AH. Antidiarrhoeal, antisecretory and antispasmodic activities of Matricaria chamomilla are mediated predominantly through K(+)-channels activation. Altern Ther Health Med 2015; 15:75. [PMID: 25886126 PMCID: PMC4410481 DOI: 10.1186/s12906-015-0595-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 02/28/2015] [Indexed: 11/10/2022]
Abstract
Background Matricaria chamomilla commonly known as “Chamomile” (Asteraceae) is a popular medicinal herb widely used in indigenous system of medicine for a variety of ailments. However, there is no detailed study available showing its effectiveness in hyperactive gut disorders like, abdominal colic and diarrhoea. This study was designed to determine the pharmacological basis for the folkloric use of Matricaria chamomilla in diarrhoea. Methods The crude aqueous-methanolic extract of Matricaria chamomilla (Mc.Cr) was studied for its protective effect in mice against castor oil-induced diarrhoea and intestinal fluid accumulation. The isolated rabbit jejunum was selected for the in-vitro experiments using tissue bath assembly coupled with PowerLab data acquisition system. Results Oral administration of Mc.Cr to mice at 150 and 300 mg/kg showed marked antidiarrhoeal and antisecretory effects against castor oil-induced diarrhoea and intestinal fluid accumulation, simultaneously, similar to the effects of cromakalim and loperamide. These effects of plant extract were attenuated in animals pretreated with K+ channel antagonist, glibenclamide (GB) or 4-aminopyridine (4-AP). When tested in isolated rabbit jejunum, Mc.Cr caused a dose-dependent (0.3-3 mg/ml) relaxation of spontaneous and low K+ (25 mM)-induced contractions, while it exhibited weak inhibitory effect on high K+ (80 mM). The inhibitory effect of Mc.Cr on low K+-induced contractions was partially inhibited in the presence of GB, while completely blocked by 4-AP. Cromakalim, an ATP-sensitive K+ channel opener, caused complete relaxation of low K+-induced contractions with little effect on high K+. Pretreatment of tissues with GB blocked the inhibitory effects of cromakalim on low K+, while the presence of 4-AP did not alter the original effect. Verapamil, a Ca++ channel antagonist, caused complete relaxation of both low and high K+-induced contractions with similar potency. The inhibitory effect of verapamil was insensitive to GB or 4-AP. When assessed for Ca++ antagonist like activity, Mc.Cr at high concentrations caused rightward shift in the Ca++ concentration-response curves with suppression of the maximum response, similar to the effect of verapamil, while cromakalim did not show similar effect. Conclusions This study indicates that Matricaria chamomilla possesses antidiarrhoeal, antisecretory and antispasmodic activities mediated predominantly through K+-channels activation along with weak Ca++ antagonist effect.
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Bakhshaeshi M, Khaki A, Fathiazad F, Khaki AA, Ghadamkheir E. Anti-oxidative role of quercetin derived from Allium cepa on aldehyde oxidase (OX-LDL) and hepatocytes apoptosis in streptozotocin-induced diabetic rat. Asian Pac J Trop Biomed 2015; 2:528-31. [PMID: 23569964 DOI: 10.1016/s2221-1691(12)60090-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Revised: 01/11/2012] [Accepted: 03/02/2012] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE To study the role of Quercetin in streptozotocin-induced diabetes in rats. METHODS Wistar male rat (n=40) were allocated into three groups, control group (n=10) and Quercetin (QR) group received 15 mg/kg (IP) QR, (n=10), and diabetic group that received 55 mg/kg (IP) streptozotocin (STZ) (n=20) which was subdivided to two groups of 10; STZ group and treatment group. Treatment group received 55 mg/kg (IP) STZ plus 15 mg/kg QR, daily for 4 weeks, respectively; however, the control group just received an equal volume of distilled water daily (IP). Diabetes was induced by a single (IP) injection of streptozotocin (55 mg/kg). Animals were kept in standard condition. Twenty-eight days after inducing diabetic, 5 mL blood were collected for TAC, MDA and Ox-LDL levels and liver tissues of rat in whole groups were removed then prepared for apoptosis analysis by Tunel method. RESULTS Apoptotic cells significantly decreased in group that has received 15 mg/kg (IP) Quercetin (P<0.05) in comparison to experimental groups (P<0.05). CONCLUSIONS Since in our study 15 mg/kg (IP) Quercetin have significantly Preventive effect on liver cells damages by reducing number of apoptotic cells in Liver, so it seems that using it can be effective for treatment in diabetic rat.
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Affiliation(s)
- Mina Bakhshaeshi
- Member of Medicine Scientific Association, Islamic Azad University, Tabriz Branch, Tabriz, Iran
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Rafraf M, Zemestani M, Asghari-Jafarabadi M. Effectiveness of chamomile tea on glycemic control and serum lipid profile in patients with type 2 diabetes. J Endocrinol Invest 2015; 38:163-70. [PMID: 25194428 DOI: 10.1007/s40618-014-0170-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 08/21/2014] [Indexed: 12/18/2022]
Abstract
AIMS This study aimed at assessing the effects of chamomile tea consumption on glycemic control and serum lipid profile in patients with type 2 diabetes mellitus (T2DM). METHODS This single-blind randomized controlled clinical trial was conducted on 64 individuals with T2DM (males and females) aged between 30 and 60 years. The intervention group (n = 32) consumed chamomile tea (3 g/150 mL hot water) three times per day immediately after meals for 8 weeks. The control group (n = 32) followed a water regimen for the same intervention period. Fasting blood samples, anthropometric measurements, and 3-day, 24-h dietary recalls were collected at the baseline and at the end of the trial. Data were analyzed by independent t test, paired t test, Pearson correlation test, and analysis of covariance. RESULTS Chamomile tea significantly decreased concentration of HbA1C (p = 0.03), serum insulin levels (p < 0.001), homeostatic model assessment for insulin resistance (p < 0.001), total cholesterol (p = 0.001), triglyceride (p < 0.001), and low-density lipoprotein cholesterol (p = 0.05) compared with control group. No significant changes were shown in serum high-density lipoprotein cholesterol levels in both groups. CONCLUSION Chamomile tea has some beneficial effects on glycemic control and serum lipid profile in T2DM patients.
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Affiliation(s)
- M Rafraf
- Department of Nutrition in Community, Faculty of Nutrition, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - M Zemestani
- Students' Research Committee, Faculty of Nutrition, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - M Asghari-Jafarabadi
- Department of Statistics and Epidemiology, Faculty of Health, Tabriz Health Service Management Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Kim Y, Lee J. Esculetin, a coumarin derivative, suppresses adipogenesis through modulation of the AMPK pathway in 3T3-L1 adipocytes. J Funct Foods 2015. [DOI: 10.1016/j.jff.2014.12.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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66
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Hwang PA, Hung YL, Tsai YK, Chien SY, Kong ZL. The brown seaweed Sargassum hemiphyllum exhibits α-amylase and α-glucosidase inhibitory activity and enhances insulin release in vitro. Cytotechnology 2014; 67:653-60. [PMID: 25344877 DOI: 10.1007/s10616-014-9745-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 05/09/2014] [Indexed: 01/20/2023] Open
Abstract
Diabetes is one of the most prevalent chronic diseases globally. In this study, major polyphenols (17.35 ± 0.93-36.66 ± 2.01 mg/g) and minor fucoxanthin (non detected 15.12 ± 0.09 mg/g) were isolated from water, ethanol, and acetone extracts (WES, EES, and AES, respectively) of Sargassum hemiphyllum. Inhibition of α-amylase, α-glucosidase, sucrose, and maltase activities and stimulation of insulin secretion was greater with AES than with WES or EES and correlated with polyphenol and fucoxanthin concentrations in extracts. Moreover, 250 μg/ml EES and AES significantly increased insulin secretion in the presence of 25 mg/ml glibenclamide to higher levels than those obtained with 50 mg/ml glibenclamide. None of the extracts exhibited cytotoxicity, exacerbated the side effects of glibenclamide, or inhibited glibenclamide-induced insulin secretion. These results suggested that the S. hemiphyllum extracts WES, EES, and AES could be used as pharmaceuticals and functional foods to reduce dosages of synthetic diabetes drugs.
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Affiliation(s)
- Pai-An Hwang
- Seafood Technology Division, Fisheries Research Institute, Council of Agriculture, Keelung City, Taiwan, ROC
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Androutsopoulos VP, Tsatsakis AM. Benzo[a]pyrene sensitizes MCF7 breast cancer cells to induction of G1 arrest by the natural flavonoid eupatorin-5-methyl ether, via activation of cell signaling proteins and CYP1-mediated metabolism. Toxicol Lett 2014; 230:304-13. [DOI: 10.1016/j.toxlet.2013.08.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 07/29/2013] [Accepted: 08/07/2013] [Indexed: 11/25/2022]
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69
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Biochemical and biological assessment of the inhibitory potency of extracts from vinification byproducts of Vitis vinifera extracts against glycogen phosphorylase. Food Chem Toxicol 2014; 67:35-43. [DOI: 10.1016/j.fct.2014.01.055] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 01/23/2014] [Accepted: 01/31/2014] [Indexed: 01/22/2023]
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Le Person A, Moncomble A, Cornard JP. The Complexation of AlIII, PbII, and CuII Metal Ions by Esculetin: A Spectroscopic and Theoretical Approach. J Phys Chem A 2014; 118:2646-55. [DOI: 10.1021/jp412291z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Annaïg Le Person
- LASIR, CNRS UMR8516, Université Lille 1 Sciences et Technologies, Bât C5 − 59 655 Villeneuve d’Ascq Cedex − France
| | - Aurélien Moncomble
- LASIR, CNRS UMR8516, Université Lille 1 Sciences et Technologies, Bât C5 − 59 655 Villeneuve d’Ascq Cedex − France
| | - Jean-Paul Cornard
- LASIR, CNRS UMR8516, Université Lille 1 Sciences et Technologies, Bât C5 − 59 655 Villeneuve d’Ascq Cedex − France
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Priscilla DH, Roy D, Suresh A, Kumar V, Thirumurugan K. Naringenin inhibits α-glucosidase activity: a promising strategy for the regulation of postprandial hyperglycemia in high fat diet fed streptozotocin induced diabetic rats. Chem Biol Interact 2014; 210:77-85. [PMID: 24412302 DOI: 10.1016/j.cbi.2013.12.014] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 12/17/2013] [Accepted: 12/30/2013] [Indexed: 10/25/2022]
Abstract
Obesity and the onset of diabetes are two closely linked medical complications prevalent globally. Postprandial hyperglycemia is one of the earliest abnormalities of glucose homeostasis associated with type 2 diabetes (T2D). Postprandial glucose levels can be regulated through α-glucosidase inhibition. The present study aims to demonstrate the potent inhibitory role of naringenin against α-glucosidase activity. The mode of inhibition of naringenin was examined by measuring enzyme activity in vitro with different concentrations of substrate using Lineweaver-Burk plot analysis. It shows competitive inhibition towards mammalian α-glucosidase thereby competing with α-limit dextrins and oligosaccharide residues for binding in the active site. Similar results have been obtained from the molecular docking analyses, where naringenin shows preferential binding for the active sites in each of the evaluated human intestinal α-glucosidase enzymes. Post-docking intramolecular hydrogen bonding analysis shows water molecule mediated hydrogen bonding for N-terminal maltase glucoamylase and N-terminal sucrase isomaltase. Naringenin's docked pose in the C-terminal maltase glucoamylase active site does not show any particular water mediated interaction similar to the co-crystallized acarbose. Further, our results suggest that naringenin (25 mg/kg) exerts significant inhibition of intestinal α-glucosidase activity in vivo thereby delaying the absorption of carbohydrates in T2D rats, thus resulting in significant lowering of postprandial blood glucose levels. Both in vitro and in vivo results were compared to the commercially available α-glucosidase inhibitor acarbose. Our findings clearly indicate that naringenin dampens postprandial glycemic response and offers a potential complementary approach in the management of T2D.
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Affiliation(s)
- David Hansi Priscilla
- Structural Biology Lab, Centre for Bio Medical Research, School of Bio Sciences and Technology, VIT University, Vellore 632 014, Tamil Nadu, India
| | - Debasish Roy
- Structural Biology Lab, Centre for Bio Medical Research, School of Bio Sciences and Technology, VIT University, Vellore 632 014, Tamil Nadu, India
| | - Aishwarya Suresh
- Structural Biology Lab, Centre for Bio Medical Research, School of Bio Sciences and Technology, VIT University, Vellore 632 014, Tamil Nadu, India
| | - Vinod Kumar
- Structural Biology Lab, Centre for Bio Medical Research, School of Bio Sciences and Technology, VIT University, Vellore 632 014, Tamil Nadu, India
| | - Kavitha Thirumurugan
- Structural Biology Lab, Centre for Bio Medical Research, School of Bio Sciences and Technology, VIT University, Vellore 632 014, Tamil Nadu, India.
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Köberl M, Schmidt R, Ramadan EM, Bauer R, Berg G. The microbiome of medicinal plants: diversity and importance for plant growth, quality and health. Front Microbiol 2013; 4:400. [PMID: 24391634 PMCID: PMC3868918 DOI: 10.3389/fmicb.2013.00400] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 12/05/2013] [Indexed: 01/22/2023] Open
Abstract
Past medicinal plant research primarily focused on bioactive phytochemicals, however, the focus is currently shifting due to the recognition that a significant number of phytotherapeutic compounds are actually produced by associated microbes or through interaction with their host. Medicinal plants provide an enormous bioresource of potential use in modern medicine and agriculture, yet their microbiome is largely unknown. The objective of this review is (i) to introduce novel insights into the plant microbiome with a focus on medicinal plants, (ii) to provide details about plant- and microbe-derived ingredients of medicinal plants, and (iii) to discuss possibilities for plant growth promotion and plant protection for commercial cultivation of medicinal plants. In addition, we also present a case study performed both to analyse the microbiome of three medicinal plants (Matricaria chamomilla L., Calendula officinalis L., and Solanum distichum Schumach. and Thonn.) cultivated on organically managed Egyptian desert farm and to develop biological control strategies. The soil microbiome of the desert ecosystem was comprised of a high abundance of Gram-positive bacteria of prime importance for pathogen suppression under arid soil conditions. For all three plants, we observed a clearly plant-specific selection of the microbes as well as highly specific diazotrophic communities that overall identify plant species as important drivers in structural and functional diversity. Lastly, native Bacillus spec. div. strains were able to promote plant growth and elevate the plants’ flavonoid production. These results underline the numerous links between the plant-associated microbiome and the plant metabolome.
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Affiliation(s)
- Martina Köberl
- Institute for Environmental Biotechnology, Graz University of Technology Graz, Austria
| | - Ruth Schmidt
- Institute for Environmental Biotechnology, Graz University of Technology Graz, Austria
| | - Elshahat M Ramadan
- Faculty of Agriculture, SEKEM, Heliopolis University, Ain Shams University Cairo, Egypt
| | - Rudolf Bauer
- Department of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz Graz, Austria
| | - Gabriele Berg
- Institute for Environmental Biotechnology, Graz University of Technology Graz, Austria
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73
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Weidner C, Wowro SJ, Rousseau M, Freiwald A, Kodelja V, Abdel-Aziz H, Kelber O, Sauer S. Antidiabetic effects of chamomile flowers extract in obese mice through transcriptional stimulation of nutrient sensors of the peroxisome proliferator-activated receptor (PPAR) family. PLoS One 2013; 8:e80335. [PMID: 24265809 PMCID: PMC3827197 DOI: 10.1371/journal.pone.0080335] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/30/2013] [Indexed: 12/02/2022] Open
Abstract
Given the significant increases in the incidence of metabolic diseases, efficient strategies for preventing and treating of these common disorders are urgently needed. This includes the development of phytopharmaceutical products or functional foods to prevent or cure metabolic diseases. Plant extracts from edible biomaterial provide a potential resource of structurally diverse molecules that can synergistically interfere with complex disorders. In this study we describe the safe application of ethanolic chamomile (Matricaria recutita) flowers extract (CFE) for the treatment and prevention of type 2 diabetes and associated disorders. We show in vitro that this extract activates in particular nuclear receptor peroxisome proliferator-activated receptor gamma (PPARγ) and its isotypes. In a cellular context, in human primary adipocytes CFE administration (300 µg/ml) led to specific expression of target genes of PPARγ, whereas in human hepatocytes CFE-induced we detected expression changes of genes that were regulated by PPARα. In vivo treatment of insulin-resistant high-fat diet (HFD)-fed C57BL/6 mice with CFE (200 mg/kg/d) for 6 weeks considerably reduced insulin resistance, glucose intolerance, plasma triacylglycerol, non-esterified fatty acids (NEFA) and LDL/VLDL cholesterol. Co-feeding of lean C57BL/6 mice a HFD with 200 mg/kg/d CFE for 20 weeks showed effective prevention of fatty liver formation and hepatic inflammation, indicating additionally hepatoprotective effects of the extract. Moreover, CFE treatment did not reveal side effects, which have otherwise been associated with strong synthetic PPAR-targeting molecules, such as weight gain, liver disorders, hemodilution or bone cell turnover. Taken together, modulation of PPARs and other factors by chamomile flowers extract has the potential to prevent or treat type 2 diabetes and related disorders.
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Affiliation(s)
- Christopher Weidner
- Otto Warburg Laboratory, Max Planck Institute for Molecular Genetics, Berlin, Germany
- Department of Biology, Chemistry, and Pharmacy, Free University of Berlin, Berlin, Germany
| | - Sylvia J. Wowro
- Otto Warburg Laboratory, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Morten Rousseau
- Otto Warburg Laboratory, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Anja Freiwald
- Otto Warburg Laboratory, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Vitam Kodelja
- Otto Warburg Laboratory, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Heba Abdel-Aziz
- Scientific Department, Steigerwald Arzneimittelwerk GmbH, Darmstadt, Germany
| | - Olaf Kelber
- Scientific Department, Steigerwald Arzneimittelwerk GmbH, Darmstadt, Germany
| | - Sascha Sauer
- Otto Warburg Laboratory, Max Planck Institute for Molecular Genetics, Berlin, Germany
- * E-mail:
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74
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Ho SC, Chang PW, Tong HT, Yu PY. Inhibition of Fluorescent Advanced Glycation End-Products and N-Carboxymethyllysine Formation by Several Floral Herbal Infusions. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2013. [DOI: 10.1080/10942912.2012.654566] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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76
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Androutsopoulos VP, Spandidos DA. The flavonoids diosmetin and luteolin exert synergistic cytostatic effects in human hepatoma HepG2 cells via CYP1A-catalyzed metabolism, activation of JNK and ERK and P53/P21 up-regulation. J Nutr Biochem 2013; 24:496-504. [DOI: 10.1016/j.jnutbio.2012.01.012] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 12/22/2011] [Accepted: 01/31/2012] [Indexed: 12/31/2022]
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77
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Protective effect of esculetin on hyperglycemia-mediated oxidative damage in the hepatic and renal tissues of experimental diabetic rats. Biochimie 2013; 95:366-73. [DOI: 10.1016/j.biochi.2012.10.008] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 10/09/2012] [Indexed: 02/07/2023]
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78
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Manzari-Tavakoli A, Pouraboli I, Yaghoobi MM, Mehrabani M, Mirtadzadini SM. Antihyperglycemic, antilipid peroxidation, and insulin secretory activities of Otostegia persica shoot extract in streptozotocin-induced diabetic rats and in vitro C187 pancreatic β-cells. PHARMACEUTICAL BIOLOGY 2013; 51:253-259. [PMID: 23134106 DOI: 10.3109/13880209.2012.718351] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
CONTEXT Otostegia persica Boiss (Lamiaceae) contains antioxidant agents and is used in traditional medicine for treatment of diabetes mellitus complications. OBJECTIVES The acute antihyperglycemic, antilipid peroxidation, and insulin secretory activities of methanol extract of O. persica aerial parts were investigated. MATERIALS AND METHODS The extract [200, 300, 400 mg/kg body weight (b.w.)] was given orally to rats and glucose (2 g/kg b.w. orally) was administered 30 min later. Glucose and insulin serum levels were measured before and 30, 60, 120, and 240 min after administration of the test samples in normal and diabetic rats. The in vitro insulin secretory activity of extract was evaluated in C187 pancreatic β-cells and its antilipid peroxidation effect was determined by measuring malondialdehyde (MDA) and glutathione (GSH) levels in rat livers after 240 min. The identification of the major phytoconstituents of the extract was carried out using gas chromatography-mass spectrometry. RESULTS The extract (300 mg/kg b.w.) significantly decreased the serum glucose level in diabetic rats at 1 h (494 ± 13.4 vs. 426 ± 12.9), 2 h (472.8 ± 17.8 vs. 396 ± 22), and 4 h (438.8 ± 25 vs. 346 ± 19) after treatment. Accordingly, the serum insulin level increased at the same times. The extract significantly increased glucose-induced insulin secretion in C187 β-cells. Moreover, the extract significantly decreased MDA and increased GSH levels in the liver of diabetic rats. Phytochemical analysis revealed thymol as the major phytoconstituent in the extract. DISCUSSION AND CONCLUSION O. persica shoot extract has antihyperglycemic, antilipid peroxidation, and insulin secretory properties.
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Affiliation(s)
- Asma Manzari-Tavakoli
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
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79
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Kato A, Kunimatsu T, Yamashita Y, Adachi I, Takeshita K, Ishikawa F. Protective effects of dietary 1,5-anhydro-D-glucitol as a blood glucose regulator in diabetes and metabolic syndrome. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:611-617. [PMID: 23270454 DOI: 10.1021/jf304683s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
1,5-Anhydro-D-glucitol (1,5-AG) is fairly widespread in food products. It is also one of the major polyols in the human body, and its concentration is homeostatically regulated. We report here on the beneficial effects of 1,5-AG in preventing hyperglycemia and its role in improving metabolic syndrome. The findings revealed that it does not affect blood glucose levels itself under normal conditions but clearly has a suppressive effect on the levels of dietary sugars, such as glucose, maltose, and sucrose. A long-term administration study revealed that feeding db/db diabetic mice 3% 1,5-AG for 8 weeks significantly decreased blood glucose levels compared to untreated mice (339 ± 30 versus 438 ± 34 mg/dL; p < 0.05). Furthermore, this treatment also significantly suppressed serum cholesterol levels (110.2 ± 18.0 versus 168.4 ± 9.8 mg/dL; p < 0.01). 1,5-AG did not inhibit intestinal α-glucosidase activities but regulated liver glucose levels via affecting both the glycogenolysis and gluconeogenesis pathways. Furthermore, the oral administration of 1,5-AG significantly increased urinary glucose excretion in hyperglycemic conditions. These results clearly suggest that dietary 1,5-AG acts as a modulator of glucose levels in hyperglycemia. 1,5-AG therefore represents a new class of promising functional sweeteners, where the daily consumption of 1,5-AG with meals could inhibit the progress of hyperglycemia and metabolic syndrome.
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Affiliation(s)
- Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama, Japan.
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Prabakaran D, Ashokkumar N. Antihyperglycemic effect of esculetin modulated carbohydrate metabolic enzymes activities in streptozotocin induced diabetic rats. J Funct Foods 2012. [DOI: 10.1016/j.jff.2012.05.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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81
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Inhibitory activity of coumarins from Artemisia capillaris against advanced glycation endproduct formation. Arch Pharm Res 2012; 35:1021-35. [PMID: 22870812 DOI: 10.1007/s12272-012-0610-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Revised: 03/20/2012] [Accepted: 03/22/2012] [Indexed: 10/28/2022]
Abstract
Since glycation can lead to the onset of diabetic complications due to chronic hyperglycemia, several indigenous Artemisia species were evaluated as potential inhibitors of advanced glycation endproducts (AGE). Among them, the Artemisia capillaris plant demonstrated the highest AGE inhibitory activity. Repeated column chromatography was performed to isolate a new acylated flavonoid glycoside, acacetin-7-O-(6″-O-acetyl)-β-D-glucopyranosyl-(1→2)[α-L-rhamnopyranosyl]-(1→6)-β-D-glucopyranoside, along with 11 known flavonoids (acacetin-7-O-β-D-glucopyranosyl-(1→2)[α-L-rhamnopyranosyl]-(1→6)-β-D-glucopyranoside, linarin, quercetin, hyperoside, isorhamnetin, isorhamnetin 3-galactoside, isorhamnetin 3-glucoside, isorhamnetin 3-arabinoside, isorhamnetin 3-robinobioside, arcapillin, and cirsilineol), six coumarins (umbelliferone, esculetin, scopoletin, scopolin, isoscopolin, and scoparone), and two phenolic derivatives (4,5-di-O-caffeoylquinic acid and chlorogenic acid). In determining the structure-activity relationship (SAR), it was found that the presence and position of hydroxyl group of test coumarins (coumarin, esculin, isoscopoletin, daphnetin, 4-methylcoumarin, and six isolated coumarins) may play a crucial role in AGE inhibition. A free hydroxyl group at C-7 and a glucosyl group instead of a methoxyl group at C-6 are two important parameters for the inhibitory potential of coumarins on AGE formation. A. capillaris and five key AGE inhibitors, including 4,5-di-Ocaffeoylquinic acid, umbelliferone, esculetin, esculin, and scopoletin, were identified as potential candidates for use as therapeutic or preventive agents for diabetic complications and oxidative stress-related diseases. We understand this to be the first detailed study on the SAR of coumarins in AGE inhibition.
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82
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Bhaskaran N, Shukla S, Kanwal R, Srivastava JK, Gupta S. Induction of heme oxygenase-1 by chamomile protects murine macrophages against oxidative stress. Life Sci 2012; 90:1027-33. [PMID: 22683429 DOI: 10.1016/j.lfs.2012.05.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 05/23/2012] [Accepted: 05/25/2012] [Indexed: 01/05/2023]
Abstract
AIMS Protection of cells from oxidative insult may be possible through direct scavenging of reactive oxygen species, or through stimulation of intracellular antioxidant defense mechanisms by induction of antioxidant gene expression. In this study we investigated the cytoprotective effect of chamomile and elucidated the underlying mechanisms. MAIN METHODS The cytoprotective effect of chamomile was examined on H(2)O(2)-induced cellular stress in RAW 264.7 murine macrophages. KEY FINDINGS RAW 264.7 murine macrophages treated with chamomile were protected from cell death caused by H(2)O(2). Treatment with 50μM H(2)O(2) for 6h caused significant increase in cellular stress accompanied by cell death in RAW 264.7 macrophages. Pretreatment with chamomile at 10-20μg/mL for 16h followed by H(2)O(2) treatment protected the macrophages against cell death. Chamomile exposure significantly increased the expression of antioxidant enzymes viz. heme oxygenase-1 (HO-1), peroxiredoxin-1 (Prx-1), and thioredoxin-1 (Trx-1) in a dose-dependent manner, compared with their respective controls. Chamomile increased nuclear translocation of Nrf2 with increased phosphorylated Nrf2 levels, and binding to the antioxidant response element in the nucleus. SIGNIFICANCE These molecular findings for the first time provide insights into the mechanisms underlying the induction of phase 2 enzymes through the Keap1-Nrf2 signaling pathway by chamomile, and provide evidence that chamomile possesses antioxidant and cytoprotective properties.
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Affiliation(s)
- Natarajan Bhaskaran
- Department of Urology, Case Western Reserve University, Cleveland, OH 44106, United States
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83
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Lin LZ, Harnly JM. LC-PDA-ESI/MS Identification of the Phenolic Components of Three Compositae Spices: Chamomile, Tarragon, and Mexican Arnica. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700615] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Chamomile ( Matricaria chamomilla L.), tarragon ( Artemisia dracunculus L.) and Mexican arnica ( Heterotheca inuoides) are common compositae spices and herbs found in the US market. They contain flavonoids and hydroxycinnamates that are potentially beneficial to human health. A standardized LC-PDA-ESI/MS profiling method was used to identify 51 flavonoids and 17 hydroxycinnamates. Many of the identifications were confirmed with authentic standards or through references in the literature or the laboratory's database. More than half of the phenol compounds for each spice had not been previously reported. The phenolic profile can be used for plant authentication and to correlate with biological activities.
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Affiliation(s)
- Long-Ze Lin
- Food Composition and Methods Development Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA, 10300 Baltimore Avenue, Building 161, BARC-East, Beltsville, MD 20705-3000, USA
| | - James M. Harnly
- Food Composition and Methods Development Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA, 10300 Baltimore Avenue, Building 161, BARC-East, Beltsville, MD 20705-3000, USA
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84
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Money ME, Camilleri M. Review: Management of postprandial diarrhea syndrome. Am J Med 2012; 125:538-44. [PMID: 22624684 DOI: 10.1016/j.amjmed.2011.11.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Revised: 11/11/2011] [Accepted: 11/14/2011] [Indexed: 02/07/2023]
Abstract
Unexpected, urgent, sometimes painful bowel movements after eating are common complaints among adults. Without a clear etiology, if pain is present and resolves with the movements, this is usually labeled "irritable bowel syndrome-diarrhea" based solely on symptoms. If this symptom-based approach is applied exclusively, it may lead physicians not to consider treatable conditions: celiac disease, or maldigestion due to bile acid malabsorption, pancreatic exocrine insufficiency, or an a-glucosidase (sucrase, glucoamylase, maltase, or isomaltase) deficiency. These conditions can be misdiagnosed as irritable bowel syndrome-diarrhea (or functional diarrhea, if pain is not present). Limited testing is currently available to confirm these conditions (antibody screens for celiac disease; fecal fat as a surrogate marker for pancreatic function). Therefore, empirical treatment with alpha amylase, pancreatic enzymes, or a bile acid-binding agent may simultaneously treat these patients and serve as a surrogate diagnostic test. This review will summarize the current evidence for bile acid malabsorption, and deficiencies of pancreatic enzymes or a-glucosidases as potential causes for postprandial diarrhea, and provide an algorithm for treatment options.
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Affiliation(s)
- Mary E Money
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
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Yan SJ, Wang L, Li Z, Zhu DN, Guo SC, Xin WF, Yang YF, Cong X, Ma T, Shen PP, Sheng J, Zhang WS. Inhibition of advanced glycation end product formation by Pu-erh tea ameliorates progression of experimental diabetic nephropathy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:4102-4110. [PMID: 22482420 DOI: 10.1021/jf300347p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Accumulation of advanced glycation end products (AGEs) has been implicated in the development of diabetic nephropathy. We investigated the effects of Pu-erh tea on AGE accumulation associated with diabetic nephropathy. Although it did not affect blood glucose levels and insulin sensitivy, Pu-erh tea treatment for 8 weeks attenuated the increases in urinary albumin, serum creatinine, and mesangial matrix in db/db mice. We found that Pu-erh tea prevented diabetes-induced accumulation of AGEs and led to a decreased level of receptor for AGE expression in glomeruli. Both production and clearance of carbonyl compounds, the main precursor of AGE formation, were probably attenuated by Pu-erh tea in vivo independent of glyoxalase I expression. In vitro, HPLC assay demonstrated Pu-erh tea could trap methylglyoxal in a dose-dependent manner. Our study raises the possibility that inhibition of AGE formation by carbonyl trapping is a promising approach to prevent or arrest the progression of diabetic complications.
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Affiliation(s)
- Shi-Jun Yan
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, People's Republic of China
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86
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Safer AM, Afzal M, Nomani A, Sosamma O, Mousa SA. Curative propensity of green tea extract towards hepatic fibrosis induced by CCl(4): A histopathological study. Exp Ther Med 2012; 3:781-786. [PMID: 22969968 DOI: 10.3892/etm.2012.503] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 01/20/2012] [Indexed: 11/06/2022] Open
Abstract
Hepatic fibrosis constitutes a serious insult to the liver, with a substantial negative impact on the quality of life of such patients worldwide. It is a consequence of severe liver damage and occurs as the result of several factors. Chronic alcoholism is the most common cause. Fibrosis also results from chronic viral hepatitis and autoimmune hepatitis. Prolonged exposure to environmental toxins such as carbon tetrachloride (CCl(4)) can also lead to fibrosis. In the present study, the hepato-protective effects of green tea extract (GTE) on hepatic fibrosis in a rat liver CCl(4)-induced fibrosis model were examined histologically, 3-dimensionally and biochemically. GTE was prepared from dried green tea leaves and lyophilized. Male albino rats (n=20) weighing 200-250 g were divided into four groups: GI, control; GII, administered 50 mg/kg GTE dissolved in physiological saline daily for four weeks; GIII, administered 40% CCl(4) (1 ml/kg body weight) by subcutaneous injection daily for four weeks; and GIV, treated as GIII, followed by 50 mg/kg GTE dissolved in physiological saline daily for 4 weeks. Histology and 3-dimensional scanning electron microscopy showed hepatic fibrosis with intermingled fibers located between cells in the liver tissues of the CCl(4)-treated rats. Fibrotic lesions virtually disappeared after four weeks of treatment with GTE, returning the architecture of liver tissue back to its normal state. Also, the levels of the hepatic enzymes alanine aminotranferase and aspartate aminotransferase returned to their normal levels after treatment with GTE. The rats were found to regain their normal body weight and their fur color, which had faded due to weight loss. The autopsy results showed the animal liver returning to normal shape and color. Thus, green tea extract is a potent treatment for hepatic fibrosis caused by CCl(4) in this animal model.
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Affiliation(s)
- A M Safer
- Department of Biological Sciences, Faculty of Science, Kuwait University, Kuwait City, State of Kuwait
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87
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Raal A, Orav A, Püssa T, Valner C, Malmiste B, Arak E. Content of essential oil, terpenoids and polyphenols in commercial chamomile (Chamomilla recutita L. Rauschert) teas from different countries. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.09.042] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Etxeberria U, de la Garza AL, Campión J, Martínez JA, Milagro FI. Antidiabetic effects of natural plant extracts via inhibition of carbohydrate hydrolysis enzymes with emphasis on pancreatic alpha amylase. Expert Opin Ther Targets 2012; 16:269-97. [PMID: 22360606 DOI: 10.1517/14728222.2012.664134] [Citation(s) in RCA: 228] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION The increasing prevalence of type 2 diabetes mellitus and the negative clinical outcomes observed with the commercially available anti-diabetic drugs have led to the investigation of new therapeutic approaches focused on controlling postprandrial glucose levels. The use of carbohydrate digestive enzyme inhibitors from natural resources could be a possible strategy to block dietary carbohydrate absorption with less adverse effects than synthetic drugs. AREAS COVERED This review covers the latest evidence regarding in vitro and in vivo studies in relation to pancreatic alpha-amylase inhibitors of plant origin, and presents bioactive compounds of phenolic nature that exhibit anti-amylase activity. EXPERT OPINION Pancreatic alpha-amylase inhibitors from traditional plant extracts are a promising tool for diabetes treatment. Many studies have confirmed the alpha-amylase inhibitory activity of plants and their bioactive compounds in vitro, but few studies corroborate these findings in rodents and very few in humans. Thus, despite some encouraging results, more research is required for developing a valuable anti-diabetic therapy using pancreatic alpha-amylase inhibitors of plant origin.
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Affiliation(s)
- Usune Etxeberria
- University of Navarra, Department of Nutrition, Food Science, Physiology and Toxicology, C/Irunlarrea, 1 31008, Pamplona, Spain
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Marulasiddaiah R, Kalkhambkar RG, Kulkarni MV. Synthesis and Biological Evaluation of Cyclic Imides with Coumarins and Azacoumarins. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ojmc.2012.23011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Antioxidant activity and protecting health effects of common medicinal plants. ADVANCES IN FOOD AND NUTRITION RESEARCH 2012; 67:75-139. [PMID: 23034115 DOI: 10.1016/b978-0-12-394598-3.00003-4] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Medicinal plants are traditionally used in folk medicine as natural healing remedies with therapeutic effects such as prevention of cardiovascular diseases, inflammation disorders, or reducing the risk of cancer. In addition, pharmacological industry utilizes medicinal plants due to the presence of active chemical substances as agents for drug synthesis. They are valuable also for food and cosmetic industry as additives, due to their preservative effects because of the presence of antioxidants and antimicrobial constituents. To commonly used medicinal plants with antioxidant activity known worldwide belong plants from several families, especially Lamiaceae (rosemary, sage, oregano, marjoram, basil, thyme, mints, balm), Apiaceae (cumin, fennel, caraway), and Zingiberaceae (turmeric, ginger). The antioxidant properties of medicinal plants depend on the plant, its variety, environmental conditions, climatic and seasonal variations, geographical regions of growth, degree of ripeness, growing practices, and many other factors such as postharvest treatment and processing. In addition, composition and concentration of present antioxidants, such as phenolic compounds, are related to antioxidant effect. For appropriate determination of antioxidant capacity, the extraction technique, its conditions, solvent used, and particular assay methodology are important.
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91
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Suliburska J, Kaczmarek K. Herbal infusions as a source of calcium, magnesium, iron, zinc and copper in human nutrition. Int J Food Sci Nutr 2011; 63:194-8. [DOI: 10.3109/09637486.2011.617359] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hsu CC, Guo YR, Wang ZH, Yin MC. Protective effects of an aqueous extract from pepino (Solanum muricatum Ait.) in diabetic mice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2011; 91:1517-1522. [PMID: 21445856 DOI: 10.1002/jsfa.4345] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 12/26/2010] [Accepted: 01/25/2011] [Indexed: 05/30/2023]
Abstract
BACKGROUND This study analysed the content of ascorbic acid, phenolic acids and flavonoids in aqueous and ethanol extracts of pepino (Solanum muricatum Ait.), and examined the protective effects of pepino aqueous extract (PAE) in a mouse model of diabetes. PAE at 1, 2 and 4% was supplied for 5 weeks. RESULTS Aqueous and ethanol extracts had similar levels of total phenolic acids, but PAE had a higher content of ascorbic acid and total flavonoids than the ethanol extract. PAE treatments at 2% and 4% significantly lowered plasma glucose level (P < 0.05); however, only the 4% PAE significantly elevated plasma insulin level at week 5 (P < 0.05). PAE treatments significantly decreased the levels of malonyldialdehyde and reactive oxygen species in kidney (P < 0.05); however, only the 2% and 4% treatments significantly reduced oxidised glutathione formation, increased glutathione level, and retained renal glutathione peroxidase and catalase activities (P < 0.05). PAE treatments at 2% and 4% significantly lowered renal interleukin (IL)-6 and tumour necrosis factor-α levels (P < 0.05); however, only the 4% treatments significantly diminished renal IL-1β and levels of monocyte chemoattractant protein-1 (P < 0.05). PAE treatments at 4% significantly decreased aldose reductase activity and sorbitol production in kidney (P < 0.05). CONCLUSION These findings support the suggestion that pepino aqueous extract could attenuate the progression of diabetes via its antioxidative, anti-inflammatory and antiglycative effects.
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Affiliation(s)
- Cheng-chin Hsu
- School of Nutrition, Chung Shan Medical University, Taichung City, Taiwan
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Huang GJ, Hsieh WT, Chang HY, Huang SS, Lin YC, Kuo YH. α-Glucosidase and aldose reductase inhibitory activities from the fruiting body of Phellinus merrillii. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:5702-5706. [PMID: 21452825 DOI: 10.1021/jf2003943] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The inhibitory activity from the isolated component of the fruiting body Phellinus merrillii (PM) was evaluated against α-glucosidase and lens aldose reductase from Sprague-Dawley male rats and compared to the quercetin as an aldose reductase inhibitor and acarbose as an α-glucosidase inhibitor. The ethanol extracts of PM (EPM) showed the strong α-glucosidase and aldose reductase activities. α-Glucosidase and aldose reductase inhibitors were identified as hispidin (A), hispolon (B), and inotilone (C), which were isolated from EtOAc-soluble fractions of EPM. The above structures were elucidated by their spectra and comparison with the literatures. Among them, hispidin, hispolon, and inotilone exhibited potent against α-glucosidase inhibitor activity with IC(50) values of 297.06 ± 2.06, 12.38 ± 0.13, and 18.62 ± 0.23 μg/mL, respectively, and aldose reductase inhibitor activity with IC(50) values of 48.26 ± 2.48, 9.47 ± 0.52, and 15.37 ± 0.32 μg/mL, respectively. These findings demonstrated that PM may be a good source for lead compounds as alternatives for antidiabetic agents currently used. The importance of finding effective antidiabetic therapeutics led us to further investigate natural compounds.
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Affiliation(s)
- Guan-Jhong Huang
- School of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Pharmacy, China Medical University, Taichung, Taiwan.
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Jung HA, Islam MN, Kwon YS, Jin SE, Son YK, Park JJ, Sohn HS, Choi JS. Extraction and identification of three major aldose reductase inhibitors from Artemisia montana. Food Chem Toxicol 2011; 49:376-84. [DOI: 10.1016/j.fct.2010.11.012] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2010] [Revised: 11/05/2010] [Accepted: 11/10/2010] [Indexed: 11/15/2022]
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Money ME, Walkowiak J, Virgilio C, Talley NJ. Pilot study: a randomised, double blind, placebo controlled trial of pancrealipase for the treatment of postprandial irritable bowel syndrome-diarrhoea. Frontline Gastroenterol 2011; 2:48-56. [PMID: 22095308 PMCID: PMC3009417 DOI: 10.1136/fg.2010.002253] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/24/2010] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE: To evaluate the efficacy of pancrealipase (PEZ) compared with placebo in the reduction of postprandial irritable bowel syndrome-diarrhoea (IBS-D). DESIGN: An intention to treat, double blind, randomised, crossover trial comparing PEZ to placebo for reduction of postprandial IBS-D. Patients had to recognise at least two different triggering foods, be willing to consume six baseline 'trigger meals' and again blinded with PEZ and placebo. Patients then chose which drug they preferred for another 25 meals. SETTING: Outpatient internal medicine practice clinic. PATIENTS: 255 patients were screened; 83 met the criteria, including 5 years of symptoms, recognised 'food triggers', no other identifiable cause for the symptoms, either a normal colonoscopy or barium enema while symptomatic and able to discontinue all anticholinergic medications. 69 patients were enrolled, 20 withdrew before randomisation, leaving 49 patients: 14 men, 35 women, mean age 52 years (SD 15.3). Over 60% had experienced symptoms for 11-30 years and 16% for more than 40 years. INTERVENTIONS: After completing six baseline meals, patients were randomised in blocks of four to receive either identical PEZ or a placebo for another six meals, and after a washout period of time received the alternative drug. MAIN OUTCOME MEASURES: The primary analysis was number of patients who chose PEZ over placebo for the extended use. RESULTS: Overall, 30/49 (61%) would have chosen PEZ (p=0.078), with first drug preference for PEZ at 0.002. Among the PEZ subgroup, PEZ use compared with placebo, demonstrated improvement in all symptoms (p≤0.001) for cramping, bloating, borborygami, urge to defecate, global pain and decrease stooling with increase in stool firmness. CONCLUSIONS: PEZ was found in a small group of patients to reduce postprandial IBS-D symptoms and deserves further evaluation.
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Affiliation(s)
- Mary E Money
- Washington County Health Systems, Hagerstown, Maryland, USA
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Padilla A, Descorbeth M, Almeyda AL, Payne K, De Leon M. Hyperglycemia magnifies Schwann cell dysfunction and cell death triggered by PA-induced lipotoxicity. Brain Res 2010; 1370:64-79. [PMID: 21108938 DOI: 10.1016/j.brainres.2010.11.013] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 11/01/2010] [Accepted: 11/05/2010] [Indexed: 01/01/2023]
Abstract
Lipid overload resulting in lipotoxicity is prominent in a number of chronic diseases and has been associated with cellular dysfunction and cell death. This study characterizes palmitic acid-induced lipotoxicity (PA-LTx) in Schwann cell cultures grown in normal and high glucose concentrations. The study shows for the first time that Schwann cell (SC) cultures exposed to elevated levels of PA exhibit a dose- and time-dependent loss in cell viability. Hoescht and Annexin V/7AAD staining confirmed cell death through apoptosis and the lipotoxic effect was more dramatic in SC cultures grown under high glucose conditions. The first indication of cellular dysfunction in treated SC cultures was a decrease in Ca(++) levels in the endoplasmic reticulum (ER, [Ca(++)](ER)) observed five minutes following the initial challenge with PA. This decrease in [Ca(++) ](ER) was followed by a significant increase in the expression of ER stress signature genes CHOP, Xbp1 and GRP78. The early ER stress response induced by PA-LTx was followed by a strong mitochondrial membrane depolarization. Flow cytometry using 2', 7'-dichlorodihydrofluorescein diacetate (H(2)DCFDA) showed an increase in oxidative stress within three to six hours after PA treatment. Treatment of cultures undergoing PA-LTx with the calcium chelator BAPTA-AM and the anti-oxidant MCI-186 significantly reversed the lipotoxic effect by decreasing the generation of ROS and significantly increasing cell viability. We conclude that lipotoxicity in Schwann cells results in cellular dysfunction and cell death that involves a robust ER stress response, mitochondrial dysfunction and an augmented state of cellular oxidative stress (ASCOS).
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Affiliation(s)
- Amelia Padilla
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
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97
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Srivastava JK, Shankar E, Gupta S. Chamomile: A herbal medicine of the past with bright future. Mol Med Rep 2010; 3:895-901. [PMID: 21132119 PMCID: PMC2995283 DOI: 10.3892/mmr.2010.377] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Chamomile is one of the most ancient medicinal herbs known to mankind. It is a member of Asteraceae/Compositae family and represented by two common varieties viz. German Chamomile (Chamomilla recutita) and Roman Chamomile (Chamaemelum nobile). The dried flowers of chamomile contain many terpenoids and flavonoids contributing to its medicinal properties. Chamomile preparations are commonly used for many human ailments such as hay fever, inflammation, muscle spasms, menstrual disorders, insomnia, ulcers, wounds, gastrointestinal disorders, rheumatic pain, and hemorrhoids. Essential oils of chamomile are used extensively in cosmetics and aromatherapy. Many different preparations of chamomile have been developed, the most popular of which is in the form of herbal tea consumed more than one million cups per day. In this review we describe the use of chamomile in traditional medicine with regard to evaluating its curative and preventive properties, highlight recent findings for its development as a therapeutic agent promoting human health.
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Affiliation(s)
- Janmejai K Srivastava
- Department of Urology & Nutrition, Case Western Reserve University, Cleveland, Ohio 44106
- Department of Urology & Nutrition, University Hospitals Case Medical Center, Cleveland, Ohio 44106
| | - Eswar Shankar
- Department of Urology & Nutrition, Case Western Reserve University, Cleveland, Ohio 44106
- Department of Urology & Nutrition, University Hospitals Case Medical Center, Cleveland, Ohio 44106
| | - Sanjay Gupta
- Department of Urology & Nutrition, Case Western Reserve University, Cleveland, Ohio 44106
- Department of Urology & Nutrition, University Hospitals Case Medical Center, Cleveland, Ohio 44106
- Department of Urology & Nutrition, Case Comprehensive Cancer Center, Cleveland, Ohio 44106
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Bhutada P, Mundhada Y, Bansod K, Bhutada C, Tawari S, Dixit P, Mundhada D. Ameliorative effect of quercetin on memory dysfunction in streptozotocin-induced diabetic rats. Neurobiol Learn Mem 2010; 94:293-302. [PMID: 20620214 DOI: 10.1016/j.nlm.2010.06.008] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 06/24/2010] [Accepted: 06/29/2010] [Indexed: 01/23/2023]
Abstract
Diabetes-related cognitive dysfunction is a consequence of changes within the central nervous system that are secondary to chronic hyperglycemia, oxidative stress, and cholinergic dysfunction, and probably therefore anti-diabetics, anti-oxidants, and acetylcholine esterase (AChE) inhibitors were found to have beneficial effects in animal models. Quercetin, a bioflavonoid widely distributed in the plants is reported to be a potent anti-diabetic, anti-oxidant, AChE inhibitor, and memory enhancer. Therefore, we screened its influence against diabetes-induced cognitive dysfunction in streptozotocin-induced diabetic rats using Morris water and elevated plus maze (EPM) paradigms. Thirty days after diabetes induction rats exhibited marked and persistent hyperglycemia, weight loss, higher escape latency during training trials and reduced time spent in target quadrant in probe trial in Morris water maze test, and increased escape latency in EPM task. Treatment with quercetin (5-20 mg/kg, p.o., twice daily, 30 days) in streptozotocin-induced diabetic rats prevented the changes in blood glucose, body weight, and performance in Morris water and elevated plus maze tasks. In another set of experiment, quercetin (40 mg/kg, p.o., twice daily) treatment during training trials (31-35 days) markedly decreased escape latency and increased time spent in target quadrant during Morris water maze task. This treatment also decreased blood glucose levels, but had no influence on body weights. These effects were comparable to vitamin C (100 mg/kg, twice daily, 30 days) and donepezil (3 mg/kg day 31-day 35, during training trials), and devoid of any motor deficit and anxiety-like effect when tested in open field test. In conclusion, quercetin may provide a new potential option for prevention of the cognitive dysfunction in diabetes.
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Affiliation(s)
- Pravinkumar Bhutada
- Agnihotri College of Pharmacy, Pharmacology Division, Bapuji Wadi, Sindhi (Meghe), Wardha, 442 001 Maharashtra, India.
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TAGUCHI Y, GOTO N, KAWADA Y, NASU R, ARAI R, MIURA M, GOMYO T. Evaluation of Herbal Foods on .ALPHA.-Glucosidase Activity and Glycemic Index. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2010. [DOI: 10.3136/fstr.16.39] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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