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Fatima N, Ashique S, Upadhyay A, Kumar S, Kumar H, Kumar N, Kumar P. Current Landscape of Therapeutics for the Management of Hypertension - A Review. Curr Drug Deliv 2024; 21:662-682. [PMID: 37357524 DOI: 10.2174/1567201820666230623121433] [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: 09/11/2022] [Revised: 03/16/2023] [Accepted: 03/22/2023] [Indexed: 06/27/2023]
Abstract
Hypertension is a critical health problem. It is also the primary reason for coronary heart disease, stroke, and renal vascular disease. The use of herbal drugs in the management of any disease is increasing. They are considered the best immune booster to fight against several types of diseases. To date, the demand for herbal drugs has been increasing because of their excellent properties. This review highlights antihypertensive drugs, polyphenols, and synbiotics for managing hypertension. Evidence is mounting in favour of more aggressive blood pressure control with reduced adverse effects, especially for specific patient populations. This review aimed to present contemporary viewpoints and novel treatment options, including cutting-edge technological applications and emerging interventional and pharmaceutical therapies, as well as key concerns arising from several years of research and epidemiological observations related to the management of hypertension.
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Affiliation(s)
- Neda Fatima
- Department of Pharmacology, Amity University, Lucknow Campus, Lucknow, Uttar Pradesh 226010, India
| | - Sumel Ashique
- Department of Pharmaceutics, Pandaveswar School of Pharmacy, Pandaveswar, West Bengal 713378, India
| | - Aakash Upadhyay
- Department of Pharmaceutics, Bharat Institute of Technology (BIT), School of Pharmacy, Meerut, Uttar Pradesh, 250103, India
| | - Shubneesh Kumar
- Department of Pharmaceutics, Bharat Institute of Technology (BIT), School of Pharmacy, Meerut, Uttar Pradesh, 250103, India
| | - Himanshu Kumar
- Department of Pharmaceutics, Bharat Institute of Technology (BIT), School of Pharmacy, Meerut, Uttar Pradesh, 250103, India
| | - Nitish Kumar
- SRM Modinagar College of Pharmacy, SRM Institute of Science and Technology (Deemed to be University), Delhi-NCR Campus, Modinagar, Ghaziabad, Uttar Pradesh, 201204, India
| | - Prashant Kumar
- College of Pharmacy, Teerthanker Mahaveer University, Moradabad-244001, UP, India
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Mariano LNB, Boeing T, da Silva RDCV, da Silva LM, Gasparotto-Júnior A, Cechinel-Filho V, de Souza P. Exotic Medicinal Plants Used in Brazil with Diuretic Properties: A Review. Chem Biodivers 2022; 19:e202200258. [PMID: 35544364 DOI: 10.1002/cbdv.202200258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/11/2022] [Indexed: 11/05/2022]
Abstract
Several exotic plants (non-native) are used in Brazilian traditional medicine and are known worldwide for their possible diuretic actions. Among the wide variety of plants, standing out Achillea millefolium L., Camellia sinensis L. Kuntze, Crocus sativus L., Hibiscus sabdariffa Linn., Petroselinum crispum (Mill.) A.W. Hill, Taraxacum officinale (L.) Weber, and Urtica dioica L., whose effects have already been the subject of some scientific study. In addition, we also discussed other exotic species in Brazil used popularly, but that still lack scientific studies, like the species Arctium lappa L., Carica papaya L., Catharanthus roseus (L.) G. Don, Centella asiatica (L.) Urb, Citrus aurantium L., and Persea americana Mill. However, generally, clinical studies on these plants are scarce. In this context, different plant species can be designated for further comprehensive studies, therefore, promoting support for developing an effective medicine to induce diuresis.
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Affiliation(s)
- Luísa Nathália Bolda Mariano
- Programa de Pós-graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas, Universidade do Vale do Itajaí, Rua Uruguai, 458, Centro, 88302-901, Itajaí, Brazil
| | - Thaise Boeing
- Programa de Pós-graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas, Universidade do Vale do Itajaí, Rua Uruguai, 458, Centro, 88302-901, Itajaí, Brazil
| | - Rita de Cássia Vilhena da Silva
- Programa de Pós-graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas, Universidade do Vale do Itajaí, Rua Uruguai, 458, Centro, 88302-901, Itajaí, Brazil
| | - Luisa Mota da Silva
- Programa de Pós-graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas, Universidade do Vale do Itajaí, Rua Uruguai, 458, Centro, 88302-901, Itajaí, Brazil
| | - Arquimedes Gasparotto-Júnior
- Laboratório de Eletrofisiologia e Farmacologia Cardiovascular, Faculdade de Ciências da Saúde, Universidade Federal da Grande Dourados, Dourados, Brazil
| | - Valdir Cechinel-Filho
- Programa de Pós-graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas, Universidade do Vale do Itajaí, Rua Uruguai, 458, Centro, 88302-901, Itajaí, Brazil
| | - Priscila de Souza
- Programa de Pós-graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas, Universidade do Vale do Itajaí, Rua Uruguai, 458, Centro, 88302-901, Itajaí, Brazil
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Chibisov S, Kharlitskaya E, Singh RB, Itharat A, On-Saard E, Park HR, Chaudhury J, Chakravorty S, Gupta OK, Smail MM. Polyphenolics and flavonoids in health and diseases. FUNCTIONAL FOODS AND NUTRACEUTICALS IN METABOLIC AND NON-COMMUNICABLE DISEASES 2022:671-689. [DOI: 10.1016/b978-0-12-819815-5.00016-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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Wandering through southwestern Nigeria: An inventory of Yoruba useful angiosperm plants. Heliyon 2022; 8:e08668. [PMID: 35024488 PMCID: PMC8733184 DOI: 10.1016/j.heliyon.2021.e08668] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/25/2021] [Accepted: 12/21/2021] [Indexed: 11/23/2022] Open
Abstract
This paper is a compilation of all known uses of angiosperm plants by the Yoruba people of southwestern Nigeria. Information was gathered from the past experiences of authors and surveys of books, journal articles, dissertations (published and unpublished) and theses using online databases. The review presents 493 angiosperm species (65 monocots and 428 dicots) belonging to 99 families, of which Fabaceae contributed the highest number of useful plants (72 spp.), followed by Euphorbiaceae (31 spp.), Malvaceae (30 spp.), and Asteraceae (25 spp.). Generally, of the identified plants, 418 species are for medicinal purposes, 85 species are utilized as food and beverages, 65 species for other uses including games, food packaging, and arts and crafts while 22 species are used for magical purposes such as success charm, enhancing disappearance, protection from witches and escaping from the repercussion of an act. This study provides baseline ethnobotanical data for future quantitative analyses of useful plants in the region, as indigenous plant knowledge has not been properly explored and documented among the Yoruba people.
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Ellis LR, Zulfiqar S, Holmes M, Marshall L, Dye L, Boesch C. A systematic review and meta-analysis of the effects of Hibiscus sabdariffa on blood pressure and cardiometabolic markers. Nutr Rev 2021; 80:1723-1737. [PMID: 34927694 PMCID: PMC9086798 DOI: 10.1093/nutrit/nuab104] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Context Hibiscus sabdariffa (hibiscus) has been proposed to affect cardiovascular risk factors. Objective To review the evidence for the effectiveness of hibiscus in modulating cardiovascular disease risk markers, compared with pharmacologic, nutritional, or placebo treatments. Data Sources A systematic search of the Web of Science, Cochrane, Ovid (MEDLINE, Embase, AMED), and Scopus databases identified reports published up to June 2021 on randomized controlled trials using hibiscus as an intervention for lipid profiles, blood pressure (BP), and fasting plasma glucose levels in adult populations. Data Extraction Seventeen chronic trials were included. Quantitative data were examined using a random effects meta-analysis and meta-regression with trial sequential analysis to account for type I and type II errors. Data Analysis Hibiscus exerted stronger effects on systolic BP (−7.10 mmHg [95%CI, −13.00, −1.20]; I2 = 95%; P = 0.02) than placebo, with the magnitude of reduction greatest in those with elevated BP at baseline. Hibiscus induced reductions to BP similar to that resulting from medication (systolic BP reduction, 2.13 mmHg [95%CI, −2.81, 7.06], I2 = 91%, P = 0.40; diastolic BP reduction, 1.10 mmHg [95%CI, −1.55, 3.74], I2 = 91%, P = 0.42). Hibiscus also significantly lowered levels of low-density lipoprotein compared with other teas and placebo (−6.76 mg/dL [95%CI, −13.45, −0.07]; I2 = 64%; P = 0.05). Conclusions Regular consumption of hibiscus could confer reduced cardiovascular disease risk. More studies are warranted to establish an effective dose response and treatment duration. Systematic Review Registration PROSPERO registration no. CRD42020167295
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Affiliation(s)
- Lucy R Ellis
- L.R. Ellis and L. Dye are with the School of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom. S. Zulfiqar, M. Holmes, L. Marshall, and C. Boesch are with the School of Food Science and Nutrition, Faculty of Environment, University of Leeds, United Kingdom
| | - Sadia Zulfiqar
- L.R. Ellis and L. Dye are with the School of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom. S. Zulfiqar, M. Holmes, L. Marshall, and C. Boesch are with the School of Food Science and Nutrition, Faculty of Environment, University of Leeds, United Kingdom
| | - Mel Holmes
- L.R. Ellis and L. Dye are with the School of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom. S. Zulfiqar, M. Holmes, L. Marshall, and C. Boesch are with the School of Food Science and Nutrition, Faculty of Environment, University of Leeds, United Kingdom
| | - Lisa Marshall
- L.R. Ellis and L. Dye are with the School of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom. S. Zulfiqar, M. Holmes, L. Marshall, and C. Boesch are with the School of Food Science and Nutrition, Faculty of Environment, University of Leeds, United Kingdom
| | - Louise Dye
- L.R. Ellis and L. Dye are with the School of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom. S. Zulfiqar, M. Holmes, L. Marshall, and C. Boesch are with the School of Food Science and Nutrition, Faculty of Environment, University of Leeds, United Kingdom
| | - Christine Boesch
- L.R. Ellis and L. Dye are with the School of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom. S. Zulfiqar, M. Holmes, L. Marshall, and C. Boesch are with the School of Food Science and Nutrition, Faculty of Environment, University of Leeds, United Kingdom
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Abstract
BACKGROUND Hypertension is considered to be a serious health problem worldwide. Controlling and lowering blood pressure are of significant benefit to people with hypertension because hypertension is a risk factor for stroke, heart disease, and cardiovascular disease. Roselle, the tropical plant Hibiscus sabdariffa, also commonly called sour tea or red tea, has been used as both a thirst-quenching drink and for medicinal purposes. OBJECTIVES To assess the effect of Roselle on blood pressure in people with primary hypertension. SEARCH METHODS For this update, the Cochrane Hypertension Information Specialist searched the following databases and trials registers for randomised controlled trials (RCTs): the Cochrane Hypertension Specialised Register (to 6 August 2021), Cochrane Central Register of Controlled Trials (CENTRAL; 2021, Issue 7), MEDLINE Ovid (1946 to 5 August 2021), Embase Ovid (1974 to 5 August 2021), ProQuest Dissertations & Theses (to 6 August 2021), Web of Science Clarivate (to 7 August 2021), Food Science and Technology Abstracts Clarivate (to 7 August 2021), the WHO International Clinical Trials Registry Platform (to 6 August 2021), and the US National Institutes of Health Ongoing Trials Register ClinicalTrials.gov (to 6 August 2021). We searched Google Scholar and OpenSIGLE. We also handsearched local and regional Chinese databases: CBM, CMCC, TCMLARS, CNKI, CMAC, and the Index to Chinese Periodical Literature (to 14 September 2020), as well as Thai databases (ThaiJO, CUIR, TDC, CMU e-Theses, TCTR) (to 3 October 2020). There were no language or publication date restrictions. SELECTION CRITERIA We sought RCTs evaluating the use of any forms of Roselle with placebo or no treatment in adults with hypertension. Our primary outcome was change in trough and/or peak systolic and diastolic blood pressure (SBP, DBP). Secondary outcomes were withdrawals due to adverse effects, change in pulse pressure, and change in heart rate. DATA COLLECTION AND ANALYSIS All search results were managed using Covidence and re-checked for the number of records, inclusion and exclusion of studies with Mendeley reference management software. We used standard methodological procedures expected by Cochrane. Two review authors worked independently in parallel for screening (titles and abstracts, and full reports), data extraction, risk of bias assessment, and assessment of the certainty of the evidence using the GRADE approach. Any disagreements were resolved by discussion or by consultation with the third review author if necessary. We presented mean difference (MD) of change in SBP and DBP with their corresponding 95% confidence interval (CI). MAIN RESULTS For this update, only one RCT with a parallel-group design involving 60 participants with type 2 diabetes mellitus fulfilled the inclusion criteria. This study investigated the effect of Roselle extract capsules (total dose of 5600 mg) compared with placebo (lactose) at eight weeks. The study was at low risk of selection bias, performance bias, and detection bias. Conversely, it was at high risk of attrition bias, reporting bias, and other bias (baseline imbalance). We have very little confidence in the effect estimate of Roselle on change-from-baseline in both SBP and DBP between the two groups. The MD of change in SBP was 1.65, 95% CI -7.89 to 11.19 mmHg, 52 participants, very low-certainty evidence. The MD of change in DBP was 4.60, 95% CI -1.38 to 10.58 mmHg, 52 participants, very low-certainty evidence. Our secondary outcomes of withdrawals due to adverse effects, change in pulse pressure, and change in heart rate were not reported. Due to the limited available data, no secondary analyses were performed (subgroup and sensitivity analysis). AUTHORS' CONCLUSIONS The evidence is currently insufficient to determine the effectiveness of Roselle compared to placebo for controlling or lowering blood pressure in people with hypertension. The certainty of evidence was very low due to methodological limitations, imprecision, and indirectness. There is a need for rigorous RCTs that address the review question.
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Affiliation(s)
- Porjai Pattanittum
- Department of Epidemiology and Biostatistics, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
| | - Chetta Ngamjarus
- Department of Epidemiology and Biostatistics, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
| | - Fonthip Buttramee
- Department of Disease Control, The office of disease prevention and control 8 Udon Thani, Udon Thani, Thailand
| | - Charoonsak Somboonporn
- Department of Radiology (Division of Nuclear Medicine), Faculty of Medicine, Khon Kaen University, Muang District, Thailand
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Eldeigdhye SM, Abdelaleem MA, Mater SNA, Kamal AM. The bioprotective role of irradiated hibiscus against harmful effects of using repeatedly frying edible oil. BRAZ J BIOL 2021; 84:e253084. [PMID: 34730699 DOI: 10.1590/1519-6984.253084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/12/2021] [Indexed: 11/22/2022] Open
Abstract
Repeatedly frying process of dietary edible oil has a potential role in the generation of free radicals. Therefore, questions have always been raised as to whether, there is an efficient and economical method to reduce the harmful effects of repeated use of frying edible oil. Since hibiscus has been stated to have a wide variety of therapeutic effects, it was important to investigate its properties against harmful effects of free radicals. The current study aspires to find out whether irradiated powder of hibiscus has a protective role against adverse effects of repeated use of frying edible oil. Thirty-five adult male albino rats were equally assigned into five groups. First group"G1" was fed with normal diet as control group, meanwhile, group"G2" the diet mixed with fresh oil, "G3" diet mixed with repeatedly frying oil only, "G4" diet mixed with frying oil treated with hibiscus and "G5" diet mixed with frying oil treated with irradiated hibiscus. Feeding duration was six weeks. Fatty acid analyses of oil as well as peroxide values were determined. Blood and liver samples were collected for biochemical analyses as well as histological study. Repeatedly heated cooked oil has significant increases in peroxide value, acid value, free fatty acid and both conjugated diene and triene compared with repeatedly frying oil treated with hibiscus. Also there are significant increases in cholesterol and triglyceride and impaired in liver functions in "G3"compared with others. In addition, relative to the hibiscus groups, there is a substantial reduction in oxygen consumption in "G3". Both hibiscus as well as irradiated hibiscus attract attention in order to play a vital and economical role against harmful effects of frequent use of frying edible oil on some biological functions but, irradiated hibiscus was more effective.
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Affiliation(s)
- Sh M Eldeigdhye
- Egyptian Atomic Energy Authority, Nuclear Research Center, Biological Applications Department, Cairo, Egypt
| | - M A Abdelaleem
- Egyptian Atomic Energy Authority, Nuclear Research Center, Plant Research Department, Cairo, Egypt
| | - S N A Mater
- Egyptian Atomic Energy Authority, Nuclear Research Center, Biological Applications Department, Cairo, Egypt
| | - A M Kamal
- Egyptian Atomic Energy Authority, Nuclear Research Center, Biological Applications Department, Cairo, Egypt
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Mattioli R, Francioso A, Mosca L, Silva P. Anthocyanins: A Comprehensive Review of Their Chemical Properties and Health Effects on Cardiovascular and Neurodegenerative Diseases. Molecules 2020; 25:E3809. [PMID: 32825684 PMCID: PMC7504512 DOI: 10.3390/molecules25173809] [Citation(s) in RCA: 250] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 12/13/2022] Open
Abstract
Anthocyanins are a class of water-soluble flavonoids widely present in fruits and vegetables. Dietary sources of anthocyanins include red and purple berries, grapes, apples, plums, cabbage, or foods containing high levels of natural colorants. Cyanidin, delphinidin, malvidin, peonidin, petunidin, and pelargonidin are the six common anthocyanidins. Following consumption, anthocyanin, absorption occurs along the gastrointestinal tract, the distal lower bowel being the place where most of the absorption and metabolism occurs. In the intestine, anthocyanins first undergo extensive microbial catabolism followed by absorption and human phase II metabolism. This produces hybrid microbial-human metabolites which are absorbed and subsequently increase the bioavailability of anthocyanins. Health benefits of anthocyanins have been widely described, especially in the prevention of diseases associated with oxidative stress, such as cardiovascular and neurodegenerative diseases. Furthermore, recent evidence suggests that health-promoting effects attributed to anthocyanins may also be related to modulation of gut microbiota. In this paper we attempt to provide a comprehensive view of the state-of-the-art literature on anthocyanins, summarizing recent findings on their chemistry, biosynthesis, nutritional value and on their effects on human health.
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Affiliation(s)
- Roberto Mattioli
- Department of Sciences, RomaTre University, v.le G. Marconi 446, 00146 Rome, Italy;
| | - Antonio Francioso
- Department of Biochemical Sciences, Sapienza University, p.le Aldo Moro, 5, 00185 Rome, Italy;
| | - Luciana Mosca
- Department of Biochemical Sciences, Sapienza University, p.le Aldo Moro, 5, 00185 Rome, Italy;
| | - Paula Silva
- Laboratory of Histology and Embryology, Institute of Biomedical Sciences Abel Salazar (ICBAS), Rua de Jorge Viterbo Ferreira n°228, 4050-313 Porto, Portugal
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Ahad A, Raish M, Bin Jardan YA, Alam MA, Al-Mohizea AM, Al-Jenoobi FI. Effect of Hibiscus sabdariffa and Zingiber officinale on the antihypertensive activity and pharmacokinetic of losartan in hypertensive rats. Xenobiotica 2020; 50:847-857. [PMID: 32048541 DOI: 10.1080/00498254.2020.1729446] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/09/2020] [Accepted: 02/10/2020] [Indexed: 01/20/2023]
Abstract
The present study aimed to determine the effect of Hibiscus sabdariffa and Zingiber officinale on antihypertensive activity and pharmacokinetic of losartan in hypertensive rats.Hypertension was induced in rats by oral administration of L-NAME (40 mg/kg per day). Pharmacodynamics and pharmacokinetics of losartan were evaluated without and with herbal treatment in hypertensive rats.Treatment of hypertensive rats with investigated herbs substantially reduced systolic blood pressure (SBP), and diastolic blood pressure (DBP) of rats. Treatment of rats (n = 5) with L-NAME plus H. sabdariffa plus losartan and L-NAME plus Z. officinale plus losartan reduced SBP by 16.20% and 14.88% and DBP by 14.82% and 17.52% respectively after 12 h, as compared to L-NAME alone treated rats. In a pharmacokinetic study, the Cmax and AUC0-t of losartan in L-NAME plus H. sabdariffa plus losartan and L-NAME plus Z. officinale plus losartan treated rats was increased by 0.7, 1.99 and 1.51, 3.00 fold respectively in comparison to the Cmax and AUC0-t obtained for L-NAME plus losartan treated group. In conclusion, both the investigated herbs significantly increased the antihypertensive effect and plasma concentration of losartan in L-NAME induced hypertensive rats. The current study predicted that the herb-drug interaction between H. sabdariffa-losartan and Z. officinale-losartan could occur; hence these results in rats may warrant further studies in humans, either in humans or in in vitro human liver microsomes.
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Affiliation(s)
- Abdul Ahad
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Raish
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Yousef A Bin Jardan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohd Aftab Alam
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah M Al-Mohizea
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Fahad I Al-Jenoobi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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Aqueous Fraction from Hibiscus sabdariffa Relaxes Mesenteric Arteries of Normotensive and Hypertensive Rats through Calcium Current Reduction and Possibly Potassium Channels Modulation. Nutrients 2020; 12:nu12061782. [PMID: 32549326 PMCID: PMC7353181 DOI: 10.3390/nu12061782] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND/OBJECTIVES Hibiscus sabdariffa L. (H. sabdariffa (HS)) extract has a vascular relaxant effect on isolated rat thoracic aorta, but data on small resistance arteries, which play an important role on the development of hypertension, are still missing. The purposes of this study were (1) to assess the effect on isolated mesenteric arteries (MA) from normotensive (Wistar and Wistar-Kyoto (WKY)) and spontaneous hypertensive rats (SHR); (2) to elucidate the mechanism(s) of action underling the relaxant effect in light of bioactive components. METHODS Vascular effects of HS aqueous fraction (AF) on isolated MA rings, as well as its mechanisms of action, were assessed using the contractility and intracellular microelectrode technique. The patch clamp technique was used to evaluate the effect of HS AF on the L-type calcium current. Extraction and enrichment of AF were carried out using liquid-liquid extraction, and the yield was analyzed using HPLC. RESULTS The HS AF induced a concentration-dependent relaxant effect on MA rings of SHR (EC50 = 0.83 ± 0.08 mg/mL), WKY (EC50 = 0.46 ± 0.04 mg/mL), and Wistar rats (EC50 = 0.44 ± 0.08 mg/mL) pre-contracted with phenylephrine (10 µM). In Wistar rats, the HS AF maximum relaxant effect was not modified after endothelium removal or when a guanylate cyclase inhibitor (ODQ, 10 µM) and a selective β2-adrenergic receptor antagonist (ICI-118551, 1 µM) were incubated with the preparation. Otherwise, it was reduced by 34.57 ± 10.66% when vascular rings were pre-contracted with an 80 mM [K+] solution (p < 0.001), which suggests an effect on ionic channels. HS AF 2 mg/mL significantly decreased the peak of the L-type calcium current observed in cardiac myocytes by 24.4%. Moreover, though the vasorelaxant effect of HS, AF was reduced by 27% when the nonselective potassium channels blocker (tetraethylammonium (TEA) 20 mM) was added to the bath (p < 0.01). The extract did not induce a membrane hyperpolarization of smooth muscle cells, which might suggest an absence of a direct effect on background potassium current. CONCLUSION These results highlight that the antihypertensive effect of HS probably involves a vasorelaxant effect on small resistance arteries, which is endothelium independent. L-type calcium current reduction contributes to this effect. The results could also provide a link between the vasorelaxant effect and the bioactive compounds, especially anthocyanins.
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Saqib F, Mujahid K, Aslam MA, Modhi A, Moga MA, Bobescu E, Marceanu L. Ex vivo and in vivo studies of Viola tricolor Linn. as potential cardio protective and hypotensive agent: Inhibition of voltage-gated Ca ++ ion channels. FASEB J 2020; 34:9102-9119. [PMID: 32475023 DOI: 10.1096/fj.202000658r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/12/2020] [Accepted: 04/20/2020] [Indexed: 11/11/2022]
Abstract
Viola tricolor Linn. is used as cardio-protective and anti-hypertensive agent in traditional medicine. Current study objective was to evaluate cardio-protective and hypotensive effects of Viola tricolor L. in vitro and in vivo studies. Viola tricolor L. crude extract (Vt.Cr) and its fractions (Aqueous and organic) were tested at rabbit atria and aorta coupled to Power Lab Data Acquisition System for cardio depressant and vasorelaxant effects in vitro whereas in vivo Blood Pressure was checked by invasive method in normotensive ketamine-diazepam anesthetized rats. Isoproterenol was employed for acute myocardial infarction (AMI) and left ventricular hypertrophy (LVH) development and cardioprotective effects of Vt.Cr were evaluated hemodynamically and histopathologically. Vt.Cr and its fractions decreased heart rate and contractile force in paired atria and relaxed Phenylephrine (1 µM) and K+ (80 mM) stimulated contractions in aorta possibly mediated through Voltage dependent L-type calcium channels blockage supported by in vivo hypotensive action. In LVH, Vt.Cr lowered Angiotensin Converting Enzymes and renin, increased cyclic Guanosine Monophosphate and nitric oxide levels, decreased cardiomyocytes size and fibrosis attributed to Gallic acid as detected by High Performance Liquid Chromatography. Partial positive results were seen hemodynamically and histologically in AMI Viola tricolor L. showed vasorelaxant, cardio-relaxant, hypotensive, and cardio protective effect validating traditional practice in cardiovascular disorders.
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Affiliation(s)
- Fatima Saqib
- Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Khizra Mujahid
- Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | | | - Alotaibi Modhi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | | | - Elena Bobescu
- Faculty of Medicine, Transilvania University Brasov, Brasov, Romania
| | - Luigi Marceanu
- Faculty of Medicine, Transilvania University Brasov, Brasov, Romania
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Si LYN, Ramalingam A, Ali SS, Aminuddin A, Ng PY, Latip J, Kamisah Y, Budin SB, Zainalabidin S. Roselle attenuates cardiac hypertrophy after myocardial infarction in vivo and in vitro. EXCLI JOURNAL 2019; 18:876-892. [PMID: 31645847 PMCID: PMC6806200 DOI: 10.17179/excli2019-1792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 09/23/2019] [Indexed: 11/24/2022]
Abstract
Roselle (Hibiscus sabdariffa Linn) has been traditionally used as folk medicine for hypertension and maintaining cardiovascular health, with therapeutic potential in protecting against numerous cardiovascular diseases. However, it remains unclear whether roselle can be used for management of cardiac hypertrophy seen after myocardial infarction (MI). This study therefore investigated the effects of aqueous roselle extract on cardiac hypertrophy arising from myocardial infarction both in vivo and in vitro. For in vivo study, male Sprague-Dawley rats were divided into control or MI groups (receiving 85 mg/kg isoproterenol s.c. for 2 days) and were given roselle extract (100 mg/kg, p.o daily) for 28 days. Cardiac structure and functional changes were evaluated at study end-point using histology, Langendorff analysis and gene expression analysis. In vitro effects of roselle were also assessed on ANG II-induced cardiomyocytes hypertrophy using H9c2 cells, simulating cardiac hypertrophy evident after MI. Roselle significantly ameliorated MI-induced cardiac systolic and diastolic dysfunction, as seen across improvement in left ventricular developed pressure (LVDP) and its derivative (LVdP/dtmax) and isovolumic relaxation (Tau). Oxidative stress evident across elevated pro-oxidant markers (NOX2 subunit of NADPH oxidase and 8-isoprostane) as well as reduced antioxidant markers (superoxide dismutase and glutathione) were also significantly attenuated by roselle. Furthermore, roselle treatment markedly reduced markers of cardiac remodeling (cardiac hypertrophy and fibrosis) compared to the untreated MI rats. On in vitro analysis, roselle significantly attenuated ANG II-induced cardiomyoycte hypertrophy in dose-dependent manner. This study demonstrated that roselle attenuates cardiac hypertrophy and dysfunction seen after MI both in vivo and in vitro, and these effects are likely mediated by phenolic compounds found in roselle extract.
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Affiliation(s)
- Lislivia-Yiang-Nee Si
- Programme of Biomedical Science, Centre of Applied and Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Anand Ramalingam
- Programme of Biomedical Science, Centre of Applied and Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Shafreena Shaukat Ali
- Programme of Biomedical Science, Centre of Applied and Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Amnani Aminuddin
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Pei-Yuen Ng
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Jalifah Latip
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Yusof Kamisah
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Kuala Lumpur, Malaysia
| | - Siti Balkis Budin
- Programme of Biomedical Science, Centre of Applied and Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Satirah Zainalabidin
- Programme of Biomedical Science, Centre of Applied and Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
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Jalalyazdi M, Ramezani J, Izadi-Moud A, Madani-Sani F, Shahlaei S, Ghiasi SS. Effect of hibiscus sabdariffa on blood pressure in patients with stage 1 hypertension. J Adv Pharm Technol Res 2019; 10:107-111. [PMID: 31334091 PMCID: PMC6621350 DOI: 10.4103/japtr.japtr_402_18] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Using different drug regimens has been proved to have effective effects on lowering blood pressure, but the adverse effects of long-term usage such medications is evident. According to recent trend in suing herbal and traditional medicines, researchers have been focused on evaluating the effect of different herbals on managing hypertension. The aim of the present study is the evaluation of the antihypertensive effect one of these herbs, sour tea (Hibiscus sabdariffa), on stage one hypertension. Patients with stage one hypertension who were diagnosed by a cardiologist has been included in the present clinical trial after giving informed consent. The patients were divided into two groups. The control and case group received the same lifestyle and dietary advices for controlling blood pressure. The case group received two standard cup of sour tea every morning for 1 month. The blood pressure of both groups was documented at baseline and at the end of the study and the results were analyzed using SPSS software. A total of 46 patients participated in this study and there was no significant difference in terms of age and body mass index between groups. There was a significant reduction in systolic blood pressure in both groups, but the mean reduction in systolic and diastolic blood pressure was significantly higher in the case group (P = 0.004 and P < 0.001, respectively). Using H. sabdariffa as sour tea two times a day can be effective in managing blood pressure in stage one hypertension along with lifestyle and dietary modification.
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Affiliation(s)
- Majid Jalalyazdi
- Department of Cardiology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Javad Ramezani
- Department of Cardiology, Atherosclerosis Prevention Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Azadeh Izadi-Moud
- Department of Cardiology, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Shokufeh Shahlaei
- Department of Cardiology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shirin Sadat Ghiasi
- Department of Cardiology, Mashhad University of Medical Sciences, Mashhad, Iran
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Adeyemi DO, Adewole OS. Hibiscus sabdariffa renews pancreatic β-cells in experimental type 1 diabetic model rats. Morphologie 2019; 103:80-93. [PMID: 31101500 DOI: 10.1016/j.morpho.2019.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 03/28/2019] [Accepted: 04/18/2019] [Indexed: 01/11/2023]
Abstract
This study evaluated the antidiabetic potentials of flavonoid-rich aqueous fraction of methanolic extract of Hibiscus sabdariffa calyx (HSCE) on the pancreatic β-cells of experimental type I diabetic model rats. Type 1 diabetes mellitus was induced in Wistar rats by a single intraperitoneal injection of 80mg/kg b/w streptozotocin (STZ) dissolved in 0.1M citrate buffer (pH 6.3). The rats were divided into five groups (n=12) including normal control group, test group I, diabetic negative control, test group II, and diabetic positive control. The test groups received 1.75g/kg b/w of HSCE by gavage for 15 days. Animals were sacrificed; the splenic portion of their pancreas and serum were evaluated for histopathological and biochemical parameters respectively. The regenerative effects of the extract on STZ-diabetes β-cells damage was evident from the results of the histopathological analysis and the biochemical parameters evaluated in the serum. Reduced levels of glutathione, catalase and superoxide dismutase in the serum of diabetic rats were significantly improved in the H. sabdariffa-treated rats (P<0.05). Histological examination of pancreatic islet sections revealed degenerative and necrotic changes (D) in the pancreatic islet of Langerhans, β-cell degranulation, pyknotic β-cell nuclei, decreased islet cellular density, and severe vacuolation (V) in the islet of STZ-diabetic negative control group. The morphology of the pancreas of HSCE-treated diabetic rats (test group II) revealed remarkable improvements in the islet of Langerhans. Stereological studies also revealed that HSCE-treatment remarkably improved volume of the pancreatic islets and the numerical density of β-cell (number of β-cells per unit area of islet) depleted by STZ diabetes. The study concluded that possible antidiabetic mechanism of Hibiscus sabdariffa in STZ diabetes is through induction of β-cell regeneration and its strong antioxidant potential.
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Affiliation(s)
- D O Adeyemi
- Department of anatomy and cell biology, faculty of basic medical sciences, college of health science, Obafemi Awolowo university, Ile-Ife, Nigeria.
| | - O S Adewole
- Department of anatomy and cell biology, faculty of basic medical sciences, college of health science, Obafemi Awolowo university, Ile-Ife, Nigeria
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Showande JS, Igbinoba SI, Kajula M, Hokkanen J, Tolonen A, Adegbolagun OM, Fakeye TO. In vitro modulation of cytochrome P450 isozymes and pharmacokinetics of caffeine by extracts of Hibiscus sabdariffa Linn calyx. J Basic Clin Physiol Pharmacol 2019; 30:jbcpp-2018-0206. [PMID: 30951501 DOI: 10.1515/jbcpp-2018-0206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 01/10/2019] [Indexed: 12/25/2022]
Abstract
Background Hibiscus sabdariffa beverage (HSB) is widely consumed as a medicinal herb and sometimes used concomitantly with drugs. This study evaluated the in vitro inhibitory potential of the aqueous extract of H. sabdariffa calyces (AEHS) on selected cytochrome P450 (CYP) isozymes and the effect of HSB on the pharmacokinetics of caffeine in vivo. Methods In vitro inhibitions of eight major CYP isozymes by AEHS were estimated by monitoring CYP-specific model reactions of 10 CYP probe substrates using N-in-one assay method. Subsequently, an open, randomized, two-period crossover design was used to evaluate the effect of HSB on the pharmacokinetics of single-dose 200 mg caffeine in six healthy human volunteers. Blood samples were obtained at specific times over a 24 h period. Probe drugs and metabolites were analyzed in their respective matrices with ultra-performance liquid chromatography/mass spectrometer/mass spectrometer and reversed-phase high-performance liquid chromatography/ultraviolet detection. Results The H. sabdariffa aqueous extract weakly inhibited the selected CYP isozymes in vitro, with IC50 of >100 μgmL-1 in the order of CYP1A2 > CYP2C8 > CYP2B6 >> CYP2D6 > CYP2C19 > CYP3A4 > CYP2A6 > CYP2C9. HSB decreased terminal t1/2 and Tmax of caffeine by 13.6% and 13.0%, respectively, and increased Cmax by 10.3%. Point estimates of primary pharmacokinetic endpoints, Cmax = 1.142 (90% confidence interval (CI) = 0.882, 1.480) and AUC0-∞ = 0.992 (90% CI = 0.745, 1.320), were outside the 90% CI of 0.8-1.25 bioequivalence limits. Conclusion The aqueous extract of H. sabdariffa weakly inhibited eight CYP isozymes in vitro, but HSB modified the exposure to caffeine in human. Caution should be exercised in administering HSB with caffeine or similar substrates of CYP1A2 until more clinical data are available.
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Affiliation(s)
- Johnson Segun Showande
- Department of Clinical Pharmacy and Pharmacy Administration, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria, Phone: +2348027887608
| | - Sharon Iyobor Igbinoba
- Department of Clinical Pharmacy and Pharmacy Administration, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria
| | | | | | | | | | - Titilayo Oyelola Fakeye
- Department of Clinical Pharmacy and Pharmacy Administration, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
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Myocardial Protection from Ischemia-Reperfusion Damage by the Antioxidant Effect of Hibiscus sabdariffa Linnaeus on Metabolic Syndrome Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1724194. [PMID: 31049126 PMCID: PMC6458956 DOI: 10.1155/2019/1724194] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/07/2018] [Accepted: 02/24/2019] [Indexed: 12/13/2022]
Abstract
Cardiovascular diseases (CVD) constitute one of the most prevalent health problems worldwide, being strongly associated with metabolic syndrome (MS). Oxidative stress (OS) is present in both CVD and MS. Infusions of Hibiscus sabdariffa Linnaeus (HSL) have antioxidant properties and could therefore decrease the presence of OS in these diseases. The aim of this study was to evaluate myocardial protection during ischemia/reperfusion due to the antioxidant effect of HSL infusion (3%) on a MS rat model induced by the administration of 30% sucrose in drinking water. We determined in control, MS, and MS + HSL rat hearts (n = 6 per group) cardiac mechanical performance (CMP), coronary vascular resistance (CVR), and activities of manganese and copper/zinc superoxide dismutases (Mn and Cu/Zn-SOD), peroxidases, glutathione peroxidase (GPx), catalase (CAT), glutathione s-transferase (GST), glutathione reductase (GR), and glutathione (GSH). We also determined lipoperoxidation (LPO), total antioxidant capacity (TAC), and the nitrate/nitrite ratio (NO3−/NO2−). The treatment with the HSL infusion restored the CMP (p = 0.01) and CVR (p = 0.04) and increased the Mn- (p = 0.02), Cu/Zn-SOD (p = 0.05), peroxidases (p = 0.04), GST (p = 0.02) activity, GHS (p = 0.02), TAC (p = 0.04), and NO3−/NO2− (p = 0.01) and decreased the LPO (p = 0.02) in the heart of MS rats undergoing ischemia/reperfusion. The results suggest that the treatment with an infusion from HSL calices protects the cardiac function from damage by ischemia and reperfusion through the antioxidant activities of the substances it possesses. It favors antioxidant enzymatic activities and nonenzymatic antioxidant capacity.
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Piovesana A, Rodrigues E, Noreña CPZ. Composition analysis of carotenoids and phenolic compounds and antioxidant activity from hibiscus calyces (Hibiscus sabdariffa L.) by HPLC-DAD-MS/MS. PHYTOCHEMICAL ANALYSIS : PCA 2019; 30:208-217. [PMID: 30426586 DOI: 10.1002/pca.2806] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 08/17/2018] [Accepted: 10/02/2018] [Indexed: 06/09/2023]
Abstract
INTRODUCTION The hibiscus flower has received increasing interest because it contains high levels of bioactive compounds with remarkable functional properties. To the best of our knowledge, for the first time a detailed description of the carotenoid composition of hibiscus calyces is reported. OBJECTIVES Identification and quantification of carotenoids, phenolic compounds and antioxidant activity from hibiscus calyces. MATERIAL AND METHODS The composition of the carotenoids and phenolic compounds from hibiscus calyces was determined by high-performance liquid chromatography coupled to a diode array detector and tandem mass spectrometry (HPLC-DAD-MS/MS). Antioxidant activity was assessed using 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging and hydroxyl radicals scavenging assays. RESULTS Twenty-one carotenoids were found and from these compounds 15 were identified or tentatively identified. The major carotenoids were all-trans-lutein (316.43 ± 19.92 μg/100 g) and all-trans-β-carotene (147.76 ± 5.59 μg/100 g). Twenty phenolic compounds were found, from which 14 compounds were identified or tentatively identified. The major phenolic compounds were delphinidin 3-sambubioside (218.17 ± 12.69 mg/100 g) and 3-caffeoylquinic acid (79.22 ± 7.01 mg/100 g), representing almost 60% (w/w) of the total phenolic compounds from hibiscus calyces. The hibiscus presented low vitamin A activity, measure as retinol activity equivalent (13.52 μg/100 g). The scavenging activity of ABTS and hydroxyl radicals were 7.8 μmol Trolox equivalent/g and 81%, respectively. CONCLUSION In this study we have shown that the hibiscus calyces can be considered as a food rich in lutein, chlorogenic acids and anthocyanins (delphinidin 3-sambubioside).
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Affiliation(s)
- Alessandra Piovesana
- Institute of Food Science and Technology, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Eliseu Rodrigues
- Institute of Food Science and Technology, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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18
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Zheoat AM, Gray AI, Igoli JO, Ferro VA, Drummond RM. Hibiscus acid from Hibiscus sabdariffa (Malvaceae) has a vasorelaxant effect on the rat aorta. Fitoterapia 2019; 134:5-13. [PMID: 30690125 DOI: 10.1016/j.fitote.2019.01.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/16/2019] [Accepted: 01/24/2019] [Indexed: 02/05/2023]
Abstract
Hibiscus sabdariffa (Malvaceae) is a plant that is widely recognised for its antihypertensive properties; however the constituent(s) responsible for this biological activity are presently unknown. The aim of this study was to identify the potential compounds that are responsible for the vasorelaxant activity of H. sabdariffa. Thereafter, the mechanisms involved in producing the vasorelaxation were investigated. The plant was extracted consecutively with hexane, ethyl acetate and methanol. The methanolic extract was subjected to bioassay-guided fractionation in order to isolate pure compounds that possessed vasorelaxant activity. The vascular effects of the pure compounds were studied on the rat aorta in vitro using myography techniques. Hibiscus acid produced a concentration-dependent relaxation of the rat aorta pre-contracted with either phenylephrine (3 μM) or KCl (60 mM), irrespective of the presence of the endothelium. When the tissue was pre-contracted with phenylephrine, the concentration required to produce 50% relaxation (IC50), was 0.09 ± 0.01 mg/ml. Hibiscus acid had no effect on the phasic contraction induced by phenylephrine in Ca2+-free physiological solution; but it did affect the component of the contraction that is due to Ca2+ influx. In parallel studies, garcinia acid, a diastereoisomer of hibiscus acid, was found to have an almost identical vasorelaxant effect. The vasorelaxant action of both compounds is most likely due to the inhibition of Ca2+ influx via voltage-dependent Ca2+ channels.
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Affiliation(s)
- Ahmed M Zheoat
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, Scotland, UK
| | - Alexander I Gray
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, Scotland, UK
| | - John O Igoli
- Phytochemistry Research Group, Department of Chemistry, University of Agriculture, PMB 2373 Makurdi, Nigeria
| | - Valerie A Ferro
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, Scotland, UK
| | - Robert M Drummond
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, Scotland, UK.
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Ojulari OV, Lee SG, Nam JO. Beneficial Effects of Natural Bioactive Compounds from Hibiscus sabdariffa L. on Obesity. Molecules 2019; 24:molecules24010210. [PMID: 30626104 PMCID: PMC6337177 DOI: 10.3390/molecules24010210] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/03/2019] [Accepted: 01/08/2019] [Indexed: 12/20/2022] Open
Abstract
Obesity is a condition associated with the accumulation of excess fat in the body, energy imbalance, lipogenesis, etc., which increases adipose tissue mass through adipogenesis and poses a health risk. Its prevalence has become an economic burden to the health care system and the world at large. One of the alternatives to tackling obesity involves the use of bioactive compounds. We critically examined the effects of Hibiscus sabdariffa extract (HSE) on various parameters associated with the development of obesity such as; the effect of HSE on body weight, the effect of HSE on lipid accumulation, cholesterol metabolism and plasma parameters, the inhibitory effect of HSE on pancreatic lipase, and the effect of HSE on adipocyte differentiation/adipogenesis. This review has gathered reports on the various anti-obesity effects of H. sabdariffa bioactive compounds in cell and animal models, as well as in humans. Available toxicology information on the consumption of H. sabdariffa revealed that its toxicity is dose-dependent and may cause an adverse effect when administered over a long period of time. Reports have shown that H. sabdariffa derived bioactive compounds are potent in the treatment of obesity with an evident reduction in body weight, inhibition of lipid accumulation and suppression of adipogenesis through the PPARγ pathway and other transcriptional factors.
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Affiliation(s)
| | - Seul Gi Lee
- Department of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Korea.
| | - Ju-Ock Nam
- Department of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Korea.
- Institute of Agricultural Science & Technology, Kyungpook National University, Daegu 41566, Korea.
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Angappan R, Devanesan AA, Thilagar S. Diuretic effect of chlorogenic acid from traditional medicinal plant Merremia emarginata (Burm. F.) and its by product hippuric acid. CLINICAL PHYTOSCIENCE 2018. [DOI: 10.1186/s40816-018-0088-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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W. N, H. MA, S. A, M. OA, V. O, K. ED, D. KA, E. A. Screening for total antioxidant activity, flavonoids and phenolics variability in forty-five accessions of roselle (Hibiscus sabdariffa L.). ACTA ACUST UNITED AC 2018. [DOI: 10.5897/ajb2017.16286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Riaz G, Chopra R. A review on phytochemistry and therapeutic uses of Hibiscus sabdariffa L. Biomed Pharmacother 2018; 102:575-586. [PMID: 29597091 DOI: 10.1016/j.biopha.2018.03.023] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 03/03/2018] [Accepted: 03/05/2018] [Indexed: 01/28/2023] Open
Abstract
Hibiscus sabdariffa L. (roselle) belonging to the Malvaceae family is widely grown in many countries. This plant is often used in the traditional medicine being rich in phytochemicals like polyphenols especially anthocyanins, polysaccharides and organic acids thus having enormous prospective in modern therapeutic uses. The study aimed to review and document all the available evidence and information about the calyces of Hibiscus sabdariffa (roselle) with the special focus on their nutritional composition, bioactive constituents and therapeutic uses. The electronic database was searched up to 2017, using keywords Hibiscus sabdariffa, chemical constituents of roselle, therapeutic uses of roselle. Journals, books and conference proceedings were also searched. The review provides valuable information about the nutraceutical component of Hibiscus sabdariffa L. and their utilization for curing various degenerative diseases like hypertension, hyperlipidemia, cancer and other inflammatory diseases of liver and kidney. Their toxicological effects have also been discussed from a safety point of view. Most studies supported and provided the scientific basis for the statement that Hibiscus sabdariffa and their active constituents play an important role in the prevention of chronic and degenerative diseases that are associated with oxidative stress. Our study suggests, that good research is needed, to establish a potential strategy that can balance the pharmacological and toxic effects of roselle and standardized fingerprint of Hibiscus sabdariffa is required internationally for quality control.
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Affiliation(s)
- Ghazala Riaz
- Department of Food and Nutrition, Institute of Home Economics, F-4 Hauz Khas Enclave, New Delhi, 1100016, India.
| | - Rajni Chopra
- Department of Food and Nutrition, Institute of Home Economics, F-4 Hauz Khas Enclave, New Delhi, 1100016, India; Department of Food and Nutrition, University of Delhi, India.
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23
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Chay SY, Salleh A, Sulaiman NF, Zainal Abidin N, Hanafi MA, Zarei M, Saari N. Blood-pressure lowering efficacy of winged bean seed hydrolysate in spontaneously hypertensive rats, peptide characterization and a toxicity study in Sprague-Dawley rats. Food Funct 2018; 9:1657-1671. [PMID: 29469915 DOI: 10.1039/c7fo01769c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Winged bean seed (WBS) is an underutilized tropical crop. The current study evaluates its potential to reduce blood pressure (BP) in spontaneously hypertensive rats and finds that it reduces BP significantly, in a dose-dependent manner. Five peptides with the sequences, RGVFPCLK, TQLDLPTQ, EPALVP, MRSVVT and DMKP, have been characterized in terms of their stability against ACE via in vitro and in silico modelling. All peptides exhibited IC50 values between 0.019 and 6.885 mM and various inhibitory modes, including substrate, prodrug and true inhibitor modes. The toxicity status of non-Current Good Manufacturing Practice (non-CGMP) peptides is evaluated and the results show that such peptides are toxic, and thus are not suitable to be tested in animals, particularly in repeated-dose studies. In short, WBS hydrolysate demonstrated in vitro ACE inhibitory properties and in vivo blood pressure lowering efficacy in rat models, fostering its potential as a functional food ingredient. Non-CGMP grade peptides are toxic and unfit for testing in animal models.
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Affiliation(s)
- Shyan Yea Chay
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - Annas Salleh
- Department of Veterinary Laboratory Diagnostics, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Nor Fazila Sulaiman
- Agro-Biotechnology Institute (ABI), HQ MARDI, 43400 Serdang, Selangor, Malaysia
| | - Najib Zainal Abidin
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - Mohamad Ariff Hanafi
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - Mohammad Zarei
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia. and Department of Food Science and Technology, College of Agriculture and Natural Resources, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
| | - Nazamid Saari
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
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Abat JK, Kumar S, Mohanty A. Ethnomedicinal, Phytochemical and Ethnopharmacological Aspects of Four Medicinal Plants of Malvaceae Used in Indian Traditional Medicines: A Review. MEDICINES (BASEL, SWITZERLAND) 2017; 4:E75. [PMID: 29057840 PMCID: PMC5750599 DOI: 10.3390/medicines4040075] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 10/12/2017] [Accepted: 10/16/2017] [Indexed: 12/23/2022]
Abstract
The ethnomedicinal values of plants form the basis of the herbal drug industry. India has contributed its knowledge of traditional system medicines (Ayurveda and Siddha) to develop herbal medicines with negligible side effects. The World Health Organization has also recognized the benefits of drugs developed from natural products. Abutilon indicum, Hibiscus sabdariffa, Sida acuta and Sida rhombifolia are ethnomedicinal plants of Malvaceae, commonly used in Indian traditional system of medicines. Traditionally these plants were used in the form of extracts/powder/paste by tribal populations of India for treating common ailments like cough and cold, fever, stomach, kidney and liver disorders, pains, inflammations, wounds, etc. The present review is an overview of phytochemistry and ethnopharmacological studies that support many of the traditional ethnomedicinal uses of these plants. Many phytoconstituents have been isolated from the four ethnomedicinal plants and some of them have shown pharmacological activities that have been demonstrated by in vivo and/or in vitro experiments. Ethnomedicinal uses, supported by scientific evidences is essential for ensuring safe and effective utilization of herbal medicines.
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Affiliation(s)
- Jasmeet Kaur Abat
- Department of Botany, Gargi College, Sirifort Road, New Delhi110049, India.
| | - Sanjay Kumar
- Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana124001, India.
| | - Aparajita Mohanty
- Department of Botany, Gargi College, Sirifort Road, New Delhi110049, India.
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The Effects of Aqueous Extract from Nardostachys chinensis Batalin on Blood Pressure and Cardiac Hypertrophy in Two-Kidney One-Clip Hypertensive Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:4031950. [PMID: 29234388 PMCID: PMC5660807 DOI: 10.1155/2017/4031950] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/06/2017] [Accepted: 08/24/2017] [Indexed: 02/07/2023]
Abstract
Aims The aim of this study was to investigate the effects of the aqueous extract of Nardostachys chinensis Batalin (NCBAE) on blood pressure and cardiac hypertrophy using two-kidney one-clip (2K1C) hypertensive rats. Methods 2K1C rat models were set up by clipping the left renal artery. Sham-operated rats underwent the same surgical procedure except for renal arterial clipping. 2K1C hypertensive rats were orally given NCBAE at doses of 210, 420, and 630 mg·kg−1·d−1 for 6 weeks. Twelve weeks after surgery, rat SBP and echocardiographic parameters were measured, cardiac histopathology was assessed, serum NO and LDH were detected, and the expression of Bcl-2 and caspase-3 of left ventricular tissue was assessed by western blot. Results Treatment with NCBAE resulted in a decrease of SBP, LVPWd, LVPWs, IVSd, IVSs, LVW/BW ratio, and cardiomyocyte CSA, an increase of LVEF, and inhibition of 2K1C-induced reduction in serum NO and elevation of LDH compared with 2K1C group. NCBAE intervention also showed a significant increase of Bcl-2 expression and reduction of cleaved caspase-3 level dose-dependently in left ventricular tissue. Conclusion Our data demonstrate that NCBAE has an antihypertensive property and protective effect on 2K1C-induced cardiac hypertrophy especially at the dose of 630 mg·kg−1·d−1.
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Peter EL, Rumisha SF, Mashoto KO, Minzi OM, Mfinanga S. Efficacy of standardized extract of Hibiscus sabdariffa L. (Malvaceae) in improving iron status of adults in malaria endemic area: A randomized controlled trial. JOURNAL OF ETHNOPHARMACOLOGY 2017; 209:288-293. [PMID: 28755971 DOI: 10.1016/j.jep.2017.07.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/20/2017] [Accepted: 07/25/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Indigenous community of Mkuranga district have been using aqueous extract of H. sabdariffa L. for treating anemia. However, there have been neither safety nor efficacy studies to validate this medicinal product in anemia. AIM The purpose of this study was to establish efficacy and safety of standardized aqueous extract of H. sabdariffa L. in anemic adults. MATERIALS AND METHODS This was a randomized controlled clinical trial in which 130 adults' men and women aged 18-50 years were involved after meeting the inclusion criteria. Initially, standardized aqueous extract of H. sabdariffa L. was prepared using optimized extraction parameters. Stratified randomization was used to randomize participants into four fixed dose groups. The first group received oral dose of 1000ml while the 2nd group was randomized to receive 1500ml orally. The last two groups were given a dose of 2000ml of extract and 200mg ferrous sulphate tablet respectively. Primary endpoint was the actual change of iron status indicators at the end of 30 days follow up period as compared to those recorded at baseline. Adverse effects were assessed at every 10th day scheduled visit. In all arms, HB and hematopoietic parameters were measured using HemoCue hemoglobinometer® (HemoCue, Ängelholm, Sweden) and hematology analyzer® respectively at the trial site. Follow up was done for 30 days. A total of 82 participants were included for analysis. RESULTS A standardized aqueous extract of H. sabdariffa L. did not improve iron status in anemic adults in malaria endemic region (P>0.005). However, there was evidence to support the safety of the extract for human consumptions as herbal supplement. Iron and organic acids contents of H. sabdariffa L. extract showed the potential of improving hematopoietic parameters. Studies with bigger sample size are therefore needed to establish the efficacy of the extract when concurrently used with malaria chemoprophylaxis in malaria endemic areas.
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Affiliation(s)
- Emanuel L Peter
- Department of Innovation, Technology Transfer&Commercialization, National Institute for Medical Research, Baracka Obama drive, P.O. Box 9653, 2448 Dar Es Salaam, Tanzania.
| | - Susan F Rumisha
- Disease Surveillance and GIS, National Institute for Medical Research, Barack Obama Drive, P.O. Box 9653, 2448 Dar es Salaam, Tanzania
| | - Kijakazi O Mashoto
- Department of Innovation, Technology Transfer&Commercialization, National Institute for Medical Research, Baracka Obama drive, P.O. Box 9653, 2448 Dar Es Salaam, Tanzania
| | - Omary Ms Minzi
- Department of Clinical Pharmacy and Pharmacology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam, Tanzania
| | - Sayoki Mfinanga
- Muhimbili Research Centre, National Institute for Medical Research, P.O. Box 9653, 2448 Dar Es Salaam, Tanzania
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Ifie I, Abrankó L, Villa-Rodriguez JA, Papp N, Ho P, Williamson G, Marshall LJ. The effect of ageing temperature on the physicochemical properties, phytochemical profile and α-glucosidase inhibition of Hibiscus sabdariffa (roselle) wine. Food Chem 2017; 267:263-270. [PMID: 29934166 DOI: 10.1016/j.foodchem.2017.05.044] [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: 02/18/2017] [Revised: 05/08/2017] [Accepted: 05/08/2017] [Indexed: 10/19/2022]
Abstract
The effect of temperature (6, 15 and 30°C) during ageing on the colour, phytochemical composition and bioactivity of roselle wine was investigated over 12months. At the end of ageing, wines stored at 6°C had the highest colour density and lowest polymeric anthocyanins. The initial concentration of most of the individual phenolic compounds decreased during ageing, with reduction of monomeric anthocyanins contributing to the formation of anthocyanin-derivatives (pyranoanthocyanins), eight of which were identified tentatively and reported here for the first time in roselle wine. The decrease in individual phenolic compounds did not affect inhibition of α-glucosidase (maltase) activity, which remained relatively low but stable throughout ageing. Diethyl succinate was the only volatile clearly influenced by ageing temperature, with the most pronounced effect at 30°C (∼256 fold increase). In summary, the final concentrations of anthocyanins and diethyl succinate were the major compounds influenced by ageing temperature.
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Affiliation(s)
- Idolo Ifie
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - László Abrankó
- Szent István University, Faculty of Food Science, Department of Applied Chemistry, 29-43 Villányi, Budapest H-1118, Hungary
| | - Jose A Villa-Rodriguez
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Nóra Papp
- Szent István University, Faculty of Food Science, Department of Applied Chemistry, 29-43 Villányi, Budapest H-1118, Hungary
| | - Peter Ho
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Gary Williamson
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Lisa J Marshall
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom.
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Nwachukwu DC, Aneke EI, Nwachukwu NZ, Azubike N, Obika LF. Does consumption of an aqueous extract of Hibscus sabdariffa affect renal function in subjects with mild to moderate hypertension? J Physiol Sci 2017; 67:227-234. [PMID: 27221151 PMCID: PMC10717794 DOI: 10.1007/s12576-016-0458-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/06/2016] [Indexed: 01/25/2023]
Abstract
Hibiscus sabdariffa (HS) has been traditionally used as a herbal medicine in Nigeria mainly because of its antihypertensive action. In view of the recent increase in the prevalence of renal failure, we have investigated the effect of HS consumption on renal function in Nigerians with mild to moderate hypertension. A total of 78 newly diagnosed but untreated subjects with mild to moderate hypertension attending the medical outpatients unit of Enugu State University Teaching Hospital (Enugu, Nigeria) were recruited for the study. These subjects were randomly divided into three equally sized groups that received HS or lisinopril (treatment groups) or placebo (control group), once daily for 4 weeks. Indices of renal function (urine volume and creatinine clearance) were measured at baseline and weekly throughout the study period. HS and lisinopril significantly increased (P < 0.001) urine volume compared to placebo, and HS significantly (P < 0.001) increased urine volume more than lisinopril. HS significantly increased (P < 0.001) creatinine clearance compared to placebo whereas lisinopril did not. These results indicate that HS consumption improved indices of renal function in our study population of Nigerians with mild to moderate hypertension.
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Affiliation(s)
- Daniel Chukwu Nwachukwu
- Department of Physiology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria.
| | - Eddy Ikemefuna Aneke
- Department of Medicine, Enugu State University of Science and Technology, Enugu, Nigeria
| | - Nkiru Zuada Nwachukwu
- Department of Ophthalmology, University of Nigeria Teaching Hospital, Enugu, Nigeria
| | - Nkiru Azubike
- Department of Medical Laboratory Science, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| | - Lenard Fidelis Obika
- Department of Physiology, School of Basic Medical Sciences, University of Benin, Benin, Edo, Nigeria
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Chou ST, Lo HY, Li CC, Cheng LC, Chou PC, Lee YC, Ho TY, Hsiang CY. Exploring the effect and mechanism of Hibiscus sabdariffa on urinary tract infection and experimental renal inflammation. JOURNAL OF ETHNOPHARMACOLOGY 2016; 194:617-625. [PMID: 27773797 DOI: 10.1016/j.jep.2016.10.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 10/17/2016] [Accepted: 10/19/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hibiscus sabdariffa Linn., also known as roselle, is used in folk medicine as an anti-inflammatory agent. Urinary tract infection (UTI) is a common problem in long-term care facilities. However, effects of roselle on UTI and renal inflammation remained to be analyzed. AIM Here we surveyed the effect of roselle drink on the prevention of UTI in long-term care facilities and analyzed the anti-inflammatory potential of roselle on lipopolysaccharide (LPS)-induced renal inflammation in mice. MATERIALS AND METHODS Survey questionnaires and clinical observation were applied to evaluate the use of roselle and the incidence of UTI in long-term care facilities. Mice were administrated roselle orally for 7 consecutive days and then challenged with LPS. Anti-renal inflammatory effects of roselle were analyzed by microarray and immunohistochemical staining. RESULTS Clinical observation showed that taking roselle drink in residents with urinary catheters reduced the incidence of UTI in long-term care facilities. Renal inflammation is a key event of UTI. Roselle suppressed LPS-induced nuclear factor-κB (NF-κB) activation in cells and LPS-induced interleukin-1β production in mice a dose-dependent manner. Immunohistochemical staining showed that roselle inhibited LPS-induced NF-κB activation and inflammatory cell infiltration in kidney. Gene expression profiling further showed that roselle suppressed the expression of pro-inflammatory cytokine genes and enzyme genes involved in the production of prostaglandin and nitric oxide. In addition, NF-κB was the main transcription factor involved in the regulation of roselle-regulated gene expression in kidney. CONCLUSIONS This is the first report applying clinical observation-guided transcriptomic study to explore the application and mechanism of roselle on UTI. Our findings suggested that roselle drink ameliorated LPS-induced renal inflammation via downregulation of cytokine network, pro-inflammatory product production, and NF-κB pathway. Moreover, this report suggested the potential benefit of roselle drink on UTI.
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Affiliation(s)
- Shun-Ting Chou
- Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Hsin-Yi Lo
- Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Chia-Cheng Li
- Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Lu-Chen Cheng
- Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan; Hung Tsung Lin Hospital and Nursing Home of Hong's Hospital, Changhua 52658, Taiwan
| | - Pei-Chi Chou
- School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Yu-Chen Lee
- Graduate Institute of Acupuncture Science, China Medical University, Taichung 40402, Taiwan; Division of Chinese Acupuncture, China Medical University Hospital, 40447 Taichung, Taiwan
| | - Tin-Yun Ho
- Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan; Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan.
| | - Chien-Yun Hsiang
- Department of Microbiology, China Medical University, Taichung, Taiwan.
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Eugenio-Pérez D, Montes de Oca-Solano HA, Pedraza-Chaverri J. Role of food-derived antioxidant agents against acetaminophen-induced hepatotoxicity. PHARMACEUTICAL BIOLOGY 2016; 54:2340-2352. [PMID: 26955890 DOI: 10.3109/13880209.2016.1150302] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Context Acetaminophen (APAP), also known as paracetamol and N-acetyl p-aminophenol, is one of the most frequently used drugs for analgesic and antipyretic purposes on a worldwide basis. It is safe and effective at recommended doses but has the potential for causing hepatotoxicity and acute liver failure (ALF) with overdose. To solve this problem, different strategies have been developed, including the use of compounds isolated from food, which have been studied to characterize their efficacy as natural dietary antioxidants. Objective The objective of this study is to show the beneficial effects of a variety of natural compounds and their use against acetaminophen-induced hepatotoxicity. Methods PubMed database was reviewed to compile data about natural compounds with hepatoprotective effects against APAP toxicity. Results and conclusion As a result, the health-promoting properties of 13 different food-derived compounds with protective effect against APAP-induced hepatotoxicity were described as well as the mechanisms involved in hepatoprotection.
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Affiliation(s)
- Dianelena Eugenio-Pérez
- a Department of Biology, Faculty of Chemistry , National Autonomous University of Mexico (UNAM) , University City , Mexico City , DF , Mexico
| | - Héctor Adolfo Montes de Oca-Solano
- a Department of Biology, Faculty of Chemistry , National Autonomous University of Mexico (UNAM) , University City , Mexico City , DF , Mexico
| | - José Pedraza-Chaverri
- a Department of Biology, Faculty of Chemistry , National Autonomous University of Mexico (UNAM) , University City , Mexico City , DF , Mexico
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Patten GS, Abeywardena MY, Bennett LE. Inhibition of Angiotensin Converting Enzyme, Angiotensin II Receptor Blocking, and Blood Pressure Lowering Bioactivity across Plant Families. Crit Rev Food Sci Nutr 2016; 56:181-214. [PMID: 24915402 DOI: 10.1080/10408398.2011.651176] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Hypertension is a major risk factor for coronary heart disease, kidney disease, and stroke. Interest in medicinal or nutraceutical plant bioactives to reduce hypertension has increased dramatically. The main biological regulation of mammalian blood pressure is via the renin-angiotensin-aldosterone system. The key enzyme is angiotensin converting enzyme (ACE) that converts angiotensin I into the powerful vasoconstrictor, angiotensin II. Angiotensin II binds to its receptors (AT1) on smooth muscle cells of the arteriole vasculature causing vasoconstriction and elevation of blood pressure. This review focuses on the in vitro and in vivo reports of plant-derived extracts that inhibit ACE activity, block angiotensin II receptor binding and demonstrate hypotensive activity in animal or human studies. We describe 74 families of plants that exhibited significant ACE inhibitory activity and 16 plant families with potential AT1 receptor blocking activity, according to in vitro studies. From 43 plant families including some of those with in vitro bioactivity, the extracts from 73 plant species lowered blood pressure in various normotensive or hypertensive in vivo models by the oral route. Of these, 19 species from 15 families lowered human BP when administered orally. Some of the active plant extracts, isolated bioactives and BP-lowering mechanisms are discussed.
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Affiliation(s)
- Glen S Patten
- a CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences , Adelaide , South Australia , Australia
| | - Mahinda Y Abeywardena
- a CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences , Adelaide , South Australia , Australia
| | - Louise E Bennett
- b CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences, Werribee , Victoria , British Columbia , Australia
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Al Disi SS, Anwar MA, Eid AH. Anti-hypertensive Herbs and their Mechanisms of Action: Part I. Front Pharmacol 2016; 6:323. [PMID: 26834637 PMCID: PMC4717468 DOI: 10.3389/fphar.2015.00323] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 12/30/2015] [Indexed: 12/27/2022] Open
Abstract
The use of herbal therapies for treatment and management of cardiovascular diseases (CVDs) is increasing. Plants contain a bounty of phytochemicals that have proven to be protective by reducing the risk of various ailments and diseases. Indeed, accumulating literature provides the scientific evidence and hence reason d'etre for the application of herbal therapy in relation to CVDs. Slowly, but absolutely, herbal remedies are being entrenched into evidence-based medical practice. This is partly due to the supporting clinical trials and epidemiological studies. The rationale for this expanding interest and use of plant based treatments being that a significant proportion of hypertensive patients do not respond to Modern therapeutic medication. Other elements to this equation are the cost of medication, side-effects, accessibility, and availability of drugs. Therefore, we believe it is pertinent to review the literature on the beneficial effects of herbs and their isolated compounds as medication for treatment of hypertension, a prevalent risk factor for CVDs. Our search utilized the PubMed and ScienceDirect databases, and the criterion for inclusion was based on the following keywords and phrases: hypertension, high blood pressure, herbal medicine, complementary and alternative medicine (CAM), nitric oxide, vascular smooth muscle cell (VSMC) proliferation, hydrogen sulfide, nuclear factor kappa-B, oxidative stress, and epigenetics/epigenomics. Each of the aforementioned keywords was co-joined with herb in question, and where possible with its constituent molecule(s). In this first of a two-part review, we provide a brief introduction of hypertension, followed by a discussion of the molecular and cellular mechanisms. We then present and discuss the plants that are most commonly used in the treatment and management of hypertension.
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Affiliation(s)
- Sara S. Al Disi
- Department of Biological and Environmental Sciences, Qatar UniversityDoha, Qatar
| | - M. Akhtar Anwar
- Department of Biological and Environmental Sciences, Qatar UniversityDoha, Qatar
| | - Ali H. Eid
- Department of Biological and Environmental Sciences, Qatar UniversityDoha, Qatar
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of BeirutBeirut, Lebanon
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Suleiman MHA. An ethnobotanical survey of medicinal plants used by communities of Northern Kordofan region, Sudan. JOURNAL OF ETHNOPHARMACOLOGY 2015; 176:232-42. [PMID: 26519203 DOI: 10.1016/j.jep.2015.10.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/19/2015] [Accepted: 10/26/2015] [Indexed: 05/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The present study provides significant ethnopharmacological information on plant species used in North Kordofan region, western Sudan. The study was undertaken with an aim to document the medicinal uses of the species known to some Northern Kordofan communities. MATERIAL AND METHODS The study was conducted between 2012 and 2013. The plants were identified and voucher specimens prepared. Information was collected by means of semi-structured interviews with 258 informants (195 men and 63 women). In addition, the use value (UV) of the species was determined and the informant consensus factor (ICF) was calculated for the medicinal plants researched in the study. Further analysis was carried out to compare results with previous studies from the study area and other regions of Sudan. RESULTS A total of 44 plant species representing 24 families were found to be commonly used in the treatment of 73 different human health problems. The families most represented were Leguminosae (18%), Caesalpiniaceae (9%), Malvaceae (9%), Asclepiadaceae (6.8%) and Combretaceae (6.8%). The highest number of plant species are used against digestive system disorders (23 species) followed by microbial infections (21 species) and dermatology (19 species). Among all the plant parts leaves (20%), roots (19%), fruits and bark (14% each) were the most preferred plant parts used by the informants. There was strong agreement among the informants as to the usages of the plants (informant consensus factor 0.63-0.93). The most important plants on the basis of use-value were Acacia nilotica, Acacia seyal, Balanites aegyptiaca, Cassia occidentalis, Cassia senna, Guiera senegalensis and Tamarindus indica. CONCLUSION This study has helped to document information that may otherwise be lost to future generations. This is the first ethnobotanical study in which statistical calculations about plants are carried out by means of the ICF and UV methods in the study area. Plants with high ICF and UV values should be subjected for further phytochemical and pharmacological investigation for scientific validation.
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Tsabang N, Yedjou CG, Tsambang LWD, Tchinda AT, Donfagsiteli N, Agbor GA, Tchounwou PBB, Nkongmeneck BA. Treatment of Diabetes and/or Hypertension Using Medicinal Plants in Cameroon. MEDICINAL & AROMATIC PLANTS 2015; Suppl 2:003. [PMID: 26550547 PMCID: PMC4636212 DOI: 10.4172/2167-0412.s2-003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Medicinal plants have served as valuable starting materials for drug development in both developing and developed countries. Today, more than 80% of the people living in Africa were depended on medicinal plants based medicines to satisfy their healthcare needs. The main goal of the present study was to collect and document information on herbal remedies traditionally used for the treatment of diabetes and/or hypertension in Cameroon. To reach this objective, data were collected from 328 patients who have been diagnosed at least once by a physician as diabetics and/or hypertension patients. One hundred and eighty two (182) among them took for a period of 10 days different varieties of medicinal plants which were prepared in form of decoction, maceration and infusion and administered orally twice or three times daily. As result, 70% of patients who used plants were relieved at the end of the treatment. Thirty-three plants have been recorded and documented for the treatment of diabetes and/or hypertension. The results of this study can stimulate a sustainable development by providing the basis for drugs discovery and by documenting biodiversity for long time exploitation.
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Affiliation(s)
- N Tsabang
- Center for Research on Medicinal Plants and Traditional Medicine, Institute of Medical Research and Medicinal Plants Studies, Cameroon
| | - CG Yedjou
- Cellomics and Toxicogenomics Research Laboratory, NIH-RCMI Center for Environmental Health, Jackson State University, Jackson, USA
| | - LWD Tsambang
- Higher Institute of Medical Technoloy, Nkolonodom, P.O. Box 188 Yaounde, Cameroon
| | - AT Tchinda
- Center for Research on Medicinal Plants and Traditional Medicine, Institute of Medical Research and Medicinal Plants Studies, Cameroon
| | - N Donfagsiteli
- Center for Research on Medicinal Plants and Traditional Medicine, Institute of Medical Research and Medicinal Plants Studies, Cameroon
| | - GA Agbor
- Center for Research on Medicinal Plants and Traditional Medicine, Institute of Medical Research and Medicinal Plants Studies, Cameroon
| | - PBB Tchounwou
- Laboratory of Cellular Signalling, Phytoceuticals, Cancer Prevention and Therapies; College of Science, Engineering and Technology, Jackson State University, Jackson, USA
| | - BA Nkongmeneck
- Millennium Ecological Museum S/C PO. Box. 812 Yaounde, Cameroon
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Guardiola S, Mach N. Potencial terapéutico del Hibiscus sabdariffa: una revisión de las evidencias científicas. ACTA ACUST UNITED AC 2014; 61:274-95. [DOI: 10.1016/j.endonu.2013.10.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/25/2013] [Accepted: 10/29/2013] [Indexed: 12/20/2022]
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Aba PE, Nwaigwe CU, Okwuagwu FO, Udem SC, Asuzu IU. Effect of aqueous extract of Hibiscus sabdariffa on some biochemical parameters in alloxan-induced diabetic rats. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s00580-014-1889-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lukmanto S, Roesdiyono N, Ju YH, Indraswati N, Soetaredjo FE, Ismadji S. SUPERCRITICAL CO2EXTRACTION OF PHENOLIC COMPOUNDS IN ROSELLE (HIBISCUS SABDARIFFAL.). CHEM ENG COMMUN 2013. [DOI: 10.1080/00986445.2012.742433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sireeratawong S, Itharat A, Khonsung P, Lertprasertsuke N, Jaijoy K. Toxicity studies of the water extract from the calyces of Hibiscus sabdariffa L. in rats. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES 2013; 10:122-7. [PMID: 24146512 DOI: 10.4314/ajtcam.v10i4.20] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Acute and chronic toxicities of the water extract from calyces of Hibiscus sabdariffa were studied in male and female rats. After 14 days of a single oral administration of test substance 5,000 mg/kg body weight, measurement of the body and organ weights, necropsy and health monitoring were performed. No signs and differences of the weights or behaviour compared to the control rats were observed. The results indicated that the single oral administration of H. sabdariffa extract in the amount of 5,000 mg/kg body weight does not produce acute toxicity. The chronic toxicity was determined by oral feeding both male and female rats daily with the extract at the doses of 50, 100, and 200 mg/kg body weight for 270 days. The examinations of signs, animal behaviour and health monitoring showed no defects in the test groups compared to the control groups. Both test and control groups (day 270th) and satellite group (day 298th) were analysed by measuring their final body and organ weights, taking necropsy, and examining haematology, blood clinical chemistry, and microanatomy. Results showed no differences from the control groups. Overall, our study demonstrated that an oral administration of H. sabdariffa extract at the doses of 50, 100 and 200 mg/kg body weight for 270 days does not cause chronic toxicity in rat.
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Affiliation(s)
- Seewaboon Sireeratawong
- Division of Pharmacology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
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Controlled release and antioxidant activity of Roselle (Hibiscus sabdariffa L.) extract encapsulated in mixtures of carboxymethyl cellulose, whey protein, and pectin. Lebensm Wiss Technol 2013. [DOI: 10.1016/j.lwt.2012.08.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hibiscus sabdariffa L. in the treatment of hypertension and hyperlipidemia: a comprehensive review of animal and human studies. Fitoterapia 2013; 85:84-94. [PMID: 23333908 DOI: 10.1016/j.fitote.2013.01.003] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 01/03/2013] [Accepted: 01/06/2013] [Indexed: 02/05/2023]
Abstract
The effectiveness of Hibiscus sabdariffa L. (HS) in the treatment of risk factors associated with cardiovascular disease is assessed in this review by taking a comprehensive approach to interpreting the randomized clinical trial (RCT) results in the context of the available ethnomedical, phytochemical, pharmacological, and safety and toxicity information. HS decoctions and infusions of calyxes, and on occasion leaves, are used in at least 10 countries worldwide in the treatment of hypertension and hyperlipidemia with no reported adverse events or side effects. HS extracts have a low degree of toxicity with a LD50 ranging from 2,000 to over 5,000mg/kg/day. There is no evidence of hepatic or renal toxicity as the result of HS extract consumption, except for possible adverse hepatic effects at high doses. There is evidence that HS acts as a diuretic, however in most cases the extract did not significantly influence electrolyte levels. Animal studies have consistently shown that consumption of HS extract reduces blood pressure in a dose dependent manner. In RCTs, the daily consumption of a tea or extract produced from HS calyxes significantly lowered systolic blood pressure (SBP) and diastolic blood pressure (DBP) in adults with pre to moderate essential hypertension and type 2 diabetes. In addition, HS tea was as effective at lowering blood pressure as the commonly used blood pressure medication Captropril, but less effective than Lisinopril. Total cholesterol, low-density lipoprotein cholesterol (LDL-C), and triglycerides were lowered in the majority of normolipidemic, hyperlipidemic, and diabetic animal models, whereas high-density lipoprotein cholesterol (HDL-C) was generally not affected by the consumption of HS extract. Over half of the RCTs showed that daily consumption of HS tea or extracts had favorable influence on lipid profiles including reduced total cholesterol, LDL-C, triglycerides, as well as increased HDL-C. Anthocyanins found in abundance in HS calyxes are generally considered the phytochemicals responsible for the antihypertensive and hypocholesterolemic effects, however evidence has also been provided for the role of polyphenols and hibiscus acid. A number of potential mechanisms have been proposed to explain the hypotensive and anticholesterol effects, but the most common explanation is the antioxidant effects of the anthocyanins inhibition of LDL-C oxidation, which impedes atherosclerosis, an important cardiovascular risk factor. This comprehensive body of evidence suggests that extracts of HS are promising as a treatment of hypertension and hyperlipidemia, however more high quality animal and human studies informed by actual therapeutic practices are needed to provide recommendations for use that have the potential for widespread public health benefit.
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Seujange Y, Leelahavanichkul A, Yisarakun W, Khawsuk W, Meepool A, Phamonleatmongkol P, Saechau W, Onlamul W, Tantiwarattanatikul P, Oonsook W, Eiam-Ong S, Eiam-Ong S. Hibiscus SabdariffaLinnaeus Aqueous Extracts Attenuate the Progression of Renal Injury in 5/6 Nephrectomy Rats. Ren Fail 2012; 35:118-25. [DOI: 10.3109/0886022x.2012.741468] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Olatunji LA. Effects of aqueous extract of Hibiscus sabdariffa on renal Na+-K+-ATPase and Ca2+-Mg2+-ATPase activities in Wistar rats. ACTA ACUST UNITED AC 2012. [DOI: 10.3736/jcim20120914] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Effect of extract of Hibiscus on the ultrastructure of the testis in adult mice. Acta Histochem 2012; 114:342-8. [PMID: 21798576 DOI: 10.1016/j.acthis.2011.07.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 07/01/2011] [Accepted: 07/04/2011] [Indexed: 02/05/2023]
Abstract
Hibiscus sabdariffa extract is a popular beverage in many tropical and sub-tropical countries. Although, Hibiscus tea is known for its medicinal effects for thousands of years, scientific evidence of its systemic safety is very limited. The current study aimed to assess the potential adverse effects of H. sabdariffa extract on sperm morphology and testicular ultrastructure of albino mice. Thirty adult male albino mice were divided into three equal groups and were given: (a) distilled water, (b) cold Hibiscus aqueous extract, and (c) boiled Hibiscus aqueous extract. Hibiscus extract was administered orally daily for 4 weeks in a dose of 200 mg/kg body weight/mouse. Twenty-four hours after the last treatment, mice were decapitated and the testes and epididymides were excised and processed for transmission electron microscopy to assess ultrastructural and sperm abnormalities. The results clearly demonstrate that aqueous extracts from dried calyx of H. sabdariffa, either cold or boiled, alter normal sperm morphology and testicular ultrastructure and adversely influence the male reproductive fertility in albino mice. The current data suggest that Hibiscus extract should be consumed with caution, and reasonable estimates of the human risk associated with its consumption should be provided.
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Bassey RB, Bakare AA, Peter AI, Oremosu AA, Osinubi AA. Factors influencing extract of Hibiscus sabdariffa staining of rat testes. Biotech Histochem 2012; 87:403-7. [PMID: 22548304 DOI: 10.3109/10520295.2012.679365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Some plant extracts can be used in biology and medicine to reveal or identify cellular components and tissues. We investigated the effects of time and concentration on staining of histological sections of rat testes by an acidified extract of Hibiscus sabdariffa. An ethanolic extract of H. sabdariffa was diluted using 1% acetic acid in 70% ethanol to stain histological sections of testes at concentrations of 0.2, 0.1 and 0.05 g/ml for 5, 10, 15, 30, 45 and 60 min. The sections of testes were stained deep red. The staining efficiency of H. sabdariffa was greater at a high concentration and required less time to achieve optimal staining. H. sabdariffa is a strongly basic dye that can be used for various diagnostic purposes. Staining time and concentration must be considered to achieve optimal results.
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Affiliation(s)
- R B Bassey
- Department of Anatomy, Faculty of Basic Medical Sciences, University of Uyo, Akwa Ibom State, Nigeria.
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Inuwa I, Ali BH, Al-Lawati I, Beegam S, Ziada A, Blunden G. Long-term ingestion of Hibiscus sabdariffa calyx extract enhances myocardial capillarization in the spontaneously hypertensive rat. Exp Biol Med (Maywood) 2012; 237:563-9. [DOI: 10.1258/ebm.2012.011357] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The effects of Hibiscus sabdariffa (HS) in lowering blood pressure in human and animal hypertension have been documented. This study investigated the effect of the water extract of the dried calyx of HS and Hibiscus anthocyanins (HAs) on left ventricular myocardial capillary length and surface area in spontaneously hypertensive rats (SHRs). Twelve-week-old male SHRs were divided into eight groups (six rats in each group). Three groups were given three doses; 10%, 15% and 20% of the water extract of HS in lieu of drinking water for 10 consecutive weeks (HS10, HS15 and HS20) with one group kept as control (C). Another three groups were given three doses of the HAs orally at doses of 50, 100 and 200 mg/kg for five consecutive days with one group kept as a control (C). Systolic (SBP) and diastolic (DBP) blood pressures, as well as heart rate (HR), were measured weekly. After the experimental protocols, the left ventricles (LV) of all rats were obtained. Capillary surface area density and length density were determined by unbiased sterological methods on 3 μm LV tissue samples from perfusion-fixed hearts. HS ingestion significantly reduced SBP, DBP and LV mass in a dose-dependent fashion but did not affect the HR. HS significantly increased surface area and length density of myocardial capillaries by 59%, 65% and 86%, and length density by 57%, 77% and 57%, respectively. Myocyte nuclear volume was significantly decreased in HS-treated rats. There was a decrease (although insignificant) in SBP and DBP with HA ingestion compared with controls. These changes suggest that the observed beneficial effect of HS on high BP in SHRs could be mediated through a reduction in the diffusion distance between capillaries and myocytes, as well as new vessel formation. It is proposed that these effects might be beneficial in restoring myocyte normal nutritional status compromised by the hypertrophic state of hypertension.
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Affiliation(s)
| | | | | | | | - Amal Ziada
- Department of Physiology, College of Medicine and Health Sciences, Sultan Qaboos University, PO Box 35, Al Khod, Muscat 123, Oman
| | - Gerald Blunden
- School of Pharmacy and Biochemical Sciences, University of Portsmouth, St Michael's Building, White Swan Rd, Portsmouth PO1 2DT, UK
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Carvajal-Zarrabal O, Barradas-Dermitz DM, Orta-Flores Z, Hayward-Jones PM, Nolasco-Hipólito C, Aguilar-Uscanga MG, Miranda-Medina A, Bujang KB. Hibiscus sabdariffa L., roselle calyx, from ethnobotany to pharmacology. J Exp Pharmacol 2012; 4:25-39. [PMID: 27186114 PMCID: PMC4863543 DOI: 10.2147/jep.s27974] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Using MEDLINE and SCOPUS databases, a review of the literature from the pioneering study of 1991 until 2010 was performed on the effects on biological models of Hibiscus sabdariffa L. roselle calyx, its extracts mainly in polar solvents, or pure components found in extracts, as well as their possible relationship to these effects. Three relevant effects on lipid metabolism, antihypertensive activity, and apoptosis were observed. Our chronological review of the studies mentioned in the literature provides another opportunity to see how humans compile scientific knowledge of a chemical structure-physiological activity relationship starting from an ethnobotanical-ethnopharmagognosy contribution. The chemical components that are the main active principles in the physiological activities of Hibiscus sabdariffa L. calyx are anthocyanins and polyphenols (protocatechuic acid and quercetin). Advances have also been made in the elucidation of action mechanisms. Additionally, it has become clear that the lack of standardization in terms of chemical components of the material arising from Hibiscus sabdariffa L. used in testing on biological models imposes limits on the possibility of carrying out comparative analyses between studies. Fortunately, more recent studies are overcoming this obstacle by reporting component concentrations of assumed active principles; however, complete analysis of the extract, if this is to be considered as a therapeutic agent, is not commonly reported in the aforesaid studies. If one of the eventual scenarios for Hibiscus sabdariffa L. calyx is as a therapeutic agent in communities with economic limitations, then studies of a pharmacological nature should guarantee the effectiveness, safety, and tolerability of this material, which is widely accepted to be associated with chemical complexity, thus making this knowledge necessary.
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Alarcón-Alonso J, Zamilpa A, Aguilar FA, Herrera-Ruiz M, Tortoriello J, Jimenez-Ferrer E. Pharmacological characterization of the diuretic effect of Hibiscus sabdariffa Linn (Malvaceae) extract. JOURNAL OF ETHNOPHARMACOLOGY 2012; 139:751-6. [PMID: 22178178 DOI: 10.1016/j.jep.2011.12.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/25/2011] [Accepted: 12/02/2011] [Indexed: 05/20/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hibiscus sabdariffa L. (Malvaceae) populary known in Mexico as "Jamaica", "flor de Jamaica", has widely used in Mexican Traditional Medicine as antihypertensive and diuretic, although the latter activity has been reported the present work show evidence about the diuretic, natriuretic and potassium-sparing effects. AIM OF THE STUDY To evaluate the diuretic activity of Hibiscus sabdariffa aqueous extract on in vivo and in situ models. MATERIALS AND METHODS The Hibiscus sabdariffa aqueous extract was administrated in increasing doses and evaluated the diuresis produced and disposal of electrolytes. Moreover, in isolated kidney was determined the renal filtration rate with plant extract, furosemide and amiloride. RESULTS The yield of Hibiscus sabdariffa aqueous extraction was 28.3% and the chemical standardization from 1 g of extract was: 56.5 mg delphinidin-3-O-sambubioside, 20.8 mg/g cyanidin-3-O-sambubioside, 3.2 mg/g quercetin, 2.1 mg/g rutin and 2.7 mg/g chlorogenic acid. The diuretic and natriuretic effect of Hibiscus sabdariffa aqueous extract showed a dose-dependent behavior. The pharmacological constants of natriuretic effect was ED50=86 mg/kg and Emax=0.9 mEq/100 g/5 h. In the model of kidney in situ was observed that renal filtration increased 48% with the aqueous extract of Hibiscus sabdariffa and an additive effect when was perfuse with furosemide. CONCLUSION The compound presents in Hibiscus sabdariffa as quercetin had effect on the vascular endothelium causing oxide nitric release, increasing renal vasorelaxation by increasing kidney filtration. Therefore, the diuretic effect of Hibiscus sabdariffa may be mediated by nitric oxide release.
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Affiliation(s)
- Javier Alarcón-Alonso
- Centro de Investigación Biomédica del Sur, Instituto Mexicano del Seguro Social (IMSS), Argentina No. 1 Xochitepec, Morelos, Mexico
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Voon HC, Bhat R, Rusul G. Flower Extracts and Their Essential Oils as Potential Antimicrobial Agents for Food Uses and Pharmaceutical Applications. Compr Rev Food Sci Food Saf 2011. [DOI: 10.1111/j.1541-4337.2011.00169.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tabassum N, Ahmad F. Role of natural herbs in the treatment of hypertension. Pharmacogn Rev 2011; 5:30-40. [PMID: 22096316 PMCID: PMC3210006 DOI: 10.4103/0973-7847.79097] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2010] [Revised: 09/19/2010] [Indexed: 12/25/2022] Open
Abstract
Hypertension (HTN) is the medical term for high blood pressure. It is dangerous because it makes the heart work too hard and contributes to atherosclerosis (hardening of arteries), besides increasing the risk of heart disease and stroke. HTN can also lead to other conditions such as congestive heart failure, kidney disease, and blindness. Conventional antihypertensives are usually associated with many side effects. About 75 to 80% of the world population use herbal medicines, mainly in developing countries, for primary health care because of their better acceptability with human body and lesser side effects. In the last three decades, a lot of concerted efforts have been channeled into researching the local plants with hypotensive and antihypertensive therapeutic values. The hypotensive and antihypertensive effects of some of these medicinal plants have been validated and others disproved. However, ayurvedic knowledge needs to be coupled with modern medicine and more scientific research needs to be done to verify the effectiveness, and elucidate the safety profile of such herbal remedies for their antihypertensive potential.
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Affiliation(s)
- Nahida Tabassum
- Department of Pharmaceutical Sciences, University of Kashmir, Hazratbal, Srinagar, J & K-190 006, India
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Cissé M, Vaillant F, Bouquet S, Pallet D, Lutin F, Reynes M, Dornier M. Athermal concentration by osmotic evaporation of roselle extract, apple and grape juices and impact on quality. INNOV FOOD SCI EMERG 2011. [DOI: 10.1016/j.ifset.2011.02.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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