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Olopade EO, Morakinyo AE, Alao JO, Oyedepo TA. Effects of n-hexane fraction of Piper guineense seed extract on N ω-nitro-L-arginine methyl ester hydrochloride-induced hypertension in rats. Cell Biochem Funct 2024; 42:e4095. [PMID: 39004810 DOI: 10.1002/cbf.4095] [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: 05/07/2024] [Revised: 06/14/2024] [Accepted: 07/04/2024] [Indexed: 07/16/2024]
Abstract
This study aimed to investigate the effects of the n-hexane fraction of the ethanolic seed extract of PG (NFESEPG) on hypertension induced by Nω-nitro-L-arginine methyl ester (L-NAME) in rats. Specifically, the study examined the impact of NFESEPG on blood pressure, oxidative stress markers, NO concentration, angiotensin-converting enzyme (ACE) and arginase activities, and cardiac biomarkers in hypertensive rats. The study involved collecting, identifying, and processing the PG plant to obtain the ethanolic seed extract. The extract was then partitioned with solvents to isolate the n-hexane fraction. Hypertension was induced in rats by oral administration of L-NAME for 10 days, while concurrent treatment with NFESEPG at two doses (200 and 400 mg/kg/day) was administered orally. Blood pressure was measured using a noninvasive tail-cuff method, and various biochemical parameters were assessed. Treatment with both doses of NFESEPG significantly reduced systolic and diastolic blood pressure in L-NAME-induced hypertensive rats. Additionally, NFESEPG administration increased NO concentration and decreased ACE and arginase activities, malondialdehyde (MDA) levels, and cardiac biomarkers in hypertensive rats. The findings indicate that NFESEPG effectively lowered blood pressure in hypertensive rats induced by L-NAME, potentially through mechanisms involving the modulation of oxidative stress, NO bioavailability, and cardiac biomarkers. These results suggest the therapeutic potential of NFESEPG in managing hypertension and related cardiovascular complications.
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Affiliation(s)
| | | | - Jude Oluwapelumi Alao
- School of Public Health and Interdisciplinary Studies, Auckland University of Technology, Auckland, New Zealand
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Harahap U, Syahputra RA, Ahmed A, Nasution A, Wisely W, Sirait ML, Dalimunthe A, Zainalabidin S, Taslim NA, Nurkolis F, Kim B. Current insights and future perspectives of flavonoids: A promising antihypertensive approach. Phytother Res 2024; 38:3146-3168. [PMID: 38616386 DOI: 10.1002/ptr.8199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/27/2024] [Accepted: 03/18/2024] [Indexed: 04/16/2024]
Abstract
Hypertension, or high blood pressure (BP), is a complex disease influenced by various risk factors. It is characterized by persistent elevation of BP levels, typically exceeding 140/90 mmHg. Endothelial dysfunction and reduced nitric oxide (NO) bioavailability play crucial roles in hypertension development. L-NG-nitro arginine methyl ester (L-NAME), an analog of L-arginine, inhibits endothelial NO synthase (eNOS) enzymes, leading to decreased NO production and increased BP. Animal models exposed to L-NAME manifest hypertension, making it a useful design for studying the hypertension condition. Natural products have gained interest as alternative approaches for managing hypertension. Flavonoids, abundant in fruits, vegetables, and other plant sources, have potential cardiovascular benefits, including antihypertensive effects. Flavonoids have been extensively studied in cell cultures, animal models, and, to lesser extent, in human trials to evaluate their effectiveness against L-NAME-induced hypertension. This comprehensive review summarizes the antihypertensive activity of specific flavonoids, including quercetin, luteolin, rutin, troxerutin, apigenin, and chrysin, in L-NAME-induced hypertension models. Flavonoids possess antioxidant properties that mitigate oxidative stress, a major contributor to endothelial dysfunction and hypertension. They enhance endothelial function by promoting NO bioavailability, vasodilation, and the preservation of vascular homeostasis. Flavonoids also modulate vasoactive factors involved in BP regulation, such as angiotensin-converting enzyme (ACE) and endothelin-1. Moreover, they exhibit anti-inflammatory effects, attenuating inflammation-mediated hypertension. This review provides compelling evidence for the antihypertensive potential of flavonoids against L-NAME-induced hypertension. Their multifaceted mechanisms of action suggest their ability to target multiple pathways involved in hypertension development. Nonetheless, the reviewed studies contribute to the evidence supporting the useful of flavonoids for hypertension prevention and treatment. In conclusion, flavonoids represent a promising class of natural compounds for combating hypertension. This comprehensive review serves as a valuable resource summarizing the current knowledge on the antihypertensive effects of specific flavonoids, facilitating further investigation and guiding the development of novel therapeutic strategies for hypertension management.
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Affiliation(s)
- Urip Harahap
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Rony Abdi Syahputra
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Amer Ahmed
- Department of Bioscience, Biotechnology and Environment, University of Bari, Bari, Italy
| | - Azhari Nasution
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Wenny Wisely
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Maureen Lazurit Sirait
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Aminah Dalimunthe
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Satirah Zainalabidin
- Biomedical Science, Centre of Toxicology and Health Risk Study, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Nurpudji Astuti Taslim
- Division of Clinical Nutrition, Department of Nutrition, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| | - Fahrul Nurkolis
- Department of Biological Sciences, State Islamic University of Sunan Kalijaga (UIN Sunan Kalijaga), Yogyakarta, Indonesia
| | - Bonglee Kim
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
- Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
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Li S, Guan T, Lv H, Cai Y, Cao W, Zhang Z, Song H, Cao H, Guan X. Fabrication of diosmin loaded food-grade bilayer nanoparticles with modified chitosan and soy peptides and antioxidant properties examination. Food Chem X 2024; 21:101237. [PMID: 38426075 PMCID: PMC10902142 DOI: 10.1016/j.fochx.2024.101237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 03/02/2024] Open
Abstract
Diosmin is a flavonoid derived from plants, possessing anti-inflammatory, antioxidant, antidiabetic, neuroprotective and cardiovascular protective properties. However, diosmin has low solubility in water, leading to low bioavailability. In this study, we constructed bilayer nanoparticles with trimethyl chitosan and soy peptides to improve the oral bioaccessibility and bioavailability of diosmin, and determined the characteristics and antioxidant properties of the diosmin-loaded nanoparticles. The results showed that the size of the nanoparticles was around 250 nm with the encapsulation efficiency higher than 97 %, and the nanoparticles were stable under regular conditions. In vitro digestion suggested the nanoparticles could protect diosmin from releasing in gastric digestion but promote the bioaccessibility of diosmin in intestine. Furthermore, the diosmin-loaded nanoparticles presented excellent antioxidant activities in vitro and significantly decreased the Lipopolysaccharides-induced brain Malondialdehyde (MDA) level by oral administration. Therefore, the reported nanoparticles may be an effective platform for improving the oral bioavailability of diosmin.
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Affiliation(s)
- Sen Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Tong Guan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Hongyan Lv
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Yuwei Cai
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Wanqing Cao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Ze Zhang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Hongdong Song
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Hongwei Cao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Xiao Guan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
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Lin HH, Tsai CL, Tseng CY, Yu PR, Chiu PY, Hsu CC, Chen JH. Anti-Hypertensive Effect of Solanum muricatum Aiton Leaf Extract In Vivo and In Vitro. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2024; 79:182-188. [PMID: 38270742 DOI: 10.1007/s11130-024-01146-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/17/2024] [Indexed: 01/26/2024]
Abstract
Hypertension is a global health problem and leads to cardiovascular disease and renal injury. Solanum muricatum Aiton leaf extract, rich in flavonoids, is known for its antioxidant capacity. However, the effects of Solanum muricatum Aiton leaf extract on hypertension combined with inflammatory complications were unknown. This study aimed to investigate the impact of Solanum muricatum Aiton leaf extract on hypertension in vivo and in vitro. In vivo, Solanum muricatum Aiton leaf extract led to decrease high blood pressure, improve heart, aorta, and kidney pathology, and enhance the antioxidative activity in spontaneously hypertensive rats (SHR). Our study demonstrated Solanum muricatum Aiton leaf extract inhibited angiotensin-converting enzyme (ACE), epithelial sodium channel (ENaC), sodium glucose co-transporters-1 (SGLT-1), nuclear factor kappa B (NF-κB), cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6). In vitro, Solanum muricatum Aiton leaf extract improved the angiotensin II-induced reactive oxygen species (ROS) and mitochondrial membrane depolarization in NRK-52E cells. Besides, Solanum muricatum Aiton leaf extract could also decrease the expressions of ENaC, SGLT-1, and NF-κB in angiotensin II-treated NRK-52E cells. Solanum muricatum Aiton leaf can be suggested as a novel antihypertensive agent ameliorating hypertension via ACE inhibition, inflammation reduction, and ROS. PLE is a novel anti-hypertensive agent to ameliorate hypertension and its complications, including inflammation.
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Affiliation(s)
- Hui-Hsuan Lin
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Chia-Lin Tsai
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Chiao-Yun Tseng
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Pei-Rong Yu
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Pei-Yu Chiu
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Cheng-Chin Hsu
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Jing-Hsien Chen
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan.
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung City, 40201, Taiwan.
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Javadi B, Sobhani Z. Role of apigenin in targeting metabolic syndrome: A systematic review. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2024; 27:524-534. [PMID: 38629096 PMCID: PMC11017844 DOI: 10.22038/ijbms.2024.71539.15558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 12/03/2023] [Indexed: 04/19/2024]
Abstract
Metabolic syndrome (MetS) is a cluster of metabolic abnormalities that has a high prevalence worldwide. Apigenin is a flavonoid present in several vegetables and fruits and has anti-inflammatory, anti-oxidant, and anti-MetS properties. This study aims to systematically review the effects of apigenin against MetS and the relevant molecular and cellular mechanisms of action, pharmacokinetics features, and potential structure-activity relationship. Electronic databases including Scopus, PubMed, Science Direct and Cochrane Library were searched for in vivo, and in vitro, and human studies with the following keywords: "apigenin" and "metabolic syndrome or insulin resistance syndrome", "fatty liver", "hypertension or blood pressure", "diabetes or blood glucose", "dyslipidemia", "heart or cardiovascular " and "obesity" in title/abstract. Data were collected from 2000 until 2021 (up to April). Only papers published in the English language were included. Forty-six full-text articles out of 1016 retrieved papers were reviewed and underwent quality assessment by investigators. Anti-obesity activity of apigenin is mainly through attenuating adipocyte differentiation by suppressing the mitotic clonal expansion and the adipogenesis-related factors. Its anti-diabetic effects can be exerted through inhibition of protein tyrosine phosphatase1B expression, maintaining the activity of anti-oxidant enzymes, reducing intracellular ROS production, cellular DNA damage, protein carbonylation, and attenuating β-cell apoptosis. Moreover, apigenin could attenuate dyslipidemia and subsequent atherosclerotic conditions through down-regulating sterol regulatory element-binding proteins (SREBP)-1c, SREBP-2, stearyl-CoA desaturase-1, and 3-hydroxy-3-methyl-glutaryl-CoA reductase. Apigenin as a dietary bioactive compound would be a promising candidate for improving MetS and its components.
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Affiliation(s)
- Behjat Javadi
- Department of Traditional Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Sobhani
- Department of Traditional Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Cho KHT, Hounsell N, McClendon E, Riddle A, Basappa, Dhillon SK, Bennet L, Back S, Sherman LS, Gunn AJ, Dean JM. Postischemic Infusion of Apigenin Reduces Seizure Burden in Preterm Fetal Sheep. Int J Mol Sci 2023; 24:16926. [PMID: 38069249 PMCID: PMC10706648 DOI: 10.3390/ijms242316926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/23/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023] Open
Abstract
Seizures are common in preterm newborns and are associated with poor neurodevelopmental outcomes. Current anticonvulsants have poor efficacy, and many have been associated with upregulation of apoptosis in the developing brain. Apigenin, a natural bioactive flavonoid, is a potent inhibitor of hyaluronidase and reduces seizures in adult animal models. However, its impact on perinatal seizures is unclear. In the present study, we examined the effect of apigenin and S3, a synthetic, selective hyaluronidase inhibitor, on seizures after cerebral ischemia in preterm fetal sheep at 0.7 gestation (98-99 days, term ~147 days). Fetuses received sham ischemia (n = 9) or ischemia induced by bilateral carotid occlusion for 25 min. Immediately after ischemia, fetuses received either a continuous infusion of vehicle (0.036% dimethyl sulfoxide, n = 8) or apigenin (50 µM, n = 6). In a pilot study, we also tested infusion of S3 (2 µM, n = 3). Fetuses were monitored continuously for 72 h after ischemia. Infusion of apigenin or S3 were both associated with reduced numbers of animals with seizures, total seizure time, and mean seizure burden. S3 was also associated with a reduction in the total number of seizures over the 72 h recovery period. In animals that developed seizures, apigenin was associated with earlier cessation of seizures. However, apigenin or S3 treatment did not alter recovery of electroencephalographic power or spectral edge frequency. These data support that targeting brain hyaluronidase activity with apigenin or S3 may be an effective strategy to reduce perinatal seizures following ischemia. Further studies are required to determine their effects on neurohistological outcomes.
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Affiliation(s)
- Kenta H. T. Cho
- Department of Physiology, University of Auckland, Auckland 1142, New Zealand; (K.H.T.C.); (N.H.); (S.K.D.); (L.B.); (A.J.G.)
| | - Natalya Hounsell
- Department of Physiology, University of Auckland, Auckland 1142, New Zealand; (K.H.T.C.); (N.H.); (S.K.D.); (L.B.); (A.J.G.)
| | - Evelyn McClendon
- Department of Pediatrics, Oregon Health & Science University, Portland, OR 97239, USA; (E.M.); (A.R.); (S.B.)
| | - Art Riddle
- Department of Pediatrics, Oregon Health & Science University, Portland, OR 97239, USA; (E.M.); (A.R.); (S.B.)
| | - Basappa
- Laboratory of Chemical Biology, Department of Studies in Organic Chemistry, University of Mysore, Manasagangotri, Mysore 570006, India;
| | - Simerdeep K. Dhillon
- Department of Physiology, University of Auckland, Auckland 1142, New Zealand; (K.H.T.C.); (N.H.); (S.K.D.); (L.B.); (A.J.G.)
| | - Laura Bennet
- Department of Physiology, University of Auckland, Auckland 1142, New Zealand; (K.H.T.C.); (N.H.); (S.K.D.); (L.B.); (A.J.G.)
| | - Stephen Back
- Department of Pediatrics, Oregon Health & Science University, Portland, OR 97239, USA; (E.M.); (A.R.); (S.B.)
- Department of Neurology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Larry S. Sherman
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton, OR 97006, USA;
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Alistair J. Gunn
- Department of Physiology, University of Auckland, Auckland 1142, New Zealand; (K.H.T.C.); (N.H.); (S.K.D.); (L.B.); (A.J.G.)
| | - Justin M. Dean
- Department of Physiology, University of Auckland, Auckland 1142, New Zealand; (K.H.T.C.); (N.H.); (S.K.D.); (L.B.); (A.J.G.)
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Rathod NB, Elabed N, Punia S, Ozogul F, Kim SK, Rocha JM. Recent Developments in Polyphenol Applications on Human Health: A Review with Current Knowledge. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12061217. [PMID: 36986905 PMCID: PMC10053535 DOI: 10.3390/plants12061217] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 06/01/2023]
Abstract
Polyphenol has been used in treatment for some health disorders due to their diverse health promoting properties. These compounds can reduce the impacts of oxidation on the human body, prevent the organs and cell structure against deterioration and protect their functional integrity. The health promoting abilities are attributed to their high bioactivity imparting them high antioxidative, antihypertensive, immunomodulatory, antimicrobial, and antiviral activity, as well as anticancer properties. The application of polyphenols such as flavonoids, catechin, tannins, and phenolic acids in the food industry as bio-preservative substances for foods and beverages can exert a superb activity on the inhibition of oxidative stress via different types of mechanisms. In this review, the detailed classification of polyphenolic compunds and their important bioactivity with special focus on human health are addressed. Additionally, their ability to inhibit SARS-CoV-2 could be used as alternative therapy to treat COVID patients. Inclusions of polyphenolic compounds in various foods have demonstrated their ability to extend shelf life and they positive impacts on human health (antioxidative, antihypertensive, immunomodulatory, antimicrobial, anticancer). Additionally, their ability to inhibit the SARS-CoV-2 virus has been reported. Considering their natural occurrence and GRAS status they are highly recommended in food.
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Affiliation(s)
- Nikheel Bhojraj Rathod
- Post-Graduate Institute of Post-Harvest Technology and Management, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Roha 402 116, India
| | - Nariman Elabed
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology (INSAT), University of Carthage, BP 77-1054 Amilcar, Carthage 1054, Tunisia
| | - Sneh Punia
- Department of Food, Nutrition and Packaging Sciences, Clemoson University, Clemosn, SC 29634, USA
| | - Fatih Ozogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, 01330 Adana, Turkey
- Biotechnology Research and Application Center, Cukurova University, 01330 Adana, Turkey
| | - Se-Kwon Kim
- Department of Marine Science & Convergence Engineering, College of Science & Technology, Hanyang University, ERICA Campus, Ansan 11558, Republic of Korea
| | - João Miguel Rocha
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
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Ortiz-Andrade R, Araujo León JA, Sánchez-Salgado JC, Sánchez-Recillas A, Vazquez-Garcia P, Hernández-Núñez E. Citroflavonoids as Promising Agents for Drug Discovery in Diabetes and Hypertension: A Systematic Review of Experimental Studies. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227933. [PMID: 36432034 PMCID: PMC9696987 DOI: 10.3390/molecules27227933] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022]
Abstract
Flavonoids are naturally occurring compounds widely distributed in the Citrus genus. These natural compounds have many health benefits, mainly for metabolic and cardiovascular diseases. In fact, some these compounds are components of drug products with approved indications for peripheral vascular insufficiency and hemorrhoids. However, information on pharmacological effects of these compounds remains disperse and there is scarce comprehensive analysis of whole data and evidence. These kinds of evidence analyses could be necessary in drug design and the development of novel and innovate drug products in diabetes and hypertension. We aimed to systematically search for evidence on the efficacy of citroflavonoids in diabetes and hypertension in in vivo models. We searched four literature databases based on a PICO strategy. After database curation, twenty-nine articles were retrieved to analyze experimental data. There was high heterogeneity in both outcomes and methodology. Naringenin and hesperetin derivates were the most studied citroflavonoids in both experimental models. More investigation is still needed to determine its potential for drug design and development.
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Affiliation(s)
- Rolffy Ortiz-Andrade
- Laboratorio de Farmacología, Facultad de Química, Universidad Autónoma de Yucatán, Merida 97069, Mexico
- Correspondence: (R.O.-A.); (E.H.-N.); Tel.: +52-999-922-5708 (R.O.-A.); +52-999-942-9400 (E.H.-N.)
| | - Jesús Alfredo Araujo León
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, A.C., Calle 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Mérida 97205, Mexico
| | | | - Amanda Sánchez-Recillas
- Laboratorio de Farmacología, Facultad de Química, Universidad Autónoma de Yucatán, Merida 97069, Mexico
| | - Priscila Vazquez-Garcia
- Laboratorio de Farmacología, Facultad de Química, Universidad Autónoma de Yucatán, Merida 97069, Mexico
| | - Emanuel Hernández-Núñez
- Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional-Unidad Mérida, Merida 97205, Mexico
- Correspondence: (R.O.-A.); (E.H.-N.); Tel.: +52-999-922-5708 (R.O.-A.); +52-999-942-9400 (E.H.-N.)
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Hounguè U, Villette C, Tokoudagba JM, Chaker AB, Remila L, Auger C, Heintz D, Gbaguidi FA, Schini-Kerth VB. Carissa edulis Vahl (Apocynaceae) extract, a medicinal plant of Benin pharmacopoeia, induces potent endothelium-dependent relaxation of coronary artery rings involving nitric oxide. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 105:154370. [PMID: 35977457 DOI: 10.1016/j.phymed.2022.154370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 07/14/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Hypertension is a major cardiovascular risk factor that affects most countries including those of Africa. Although Carissa edulis Vahl, Diodia scandens Sw. and Cleome gynandra L. are traditionally used in Benin as antihypertensive treatments with some efficacy mentioned by the local population, their biological activity on the cardiovascular system remains poorly studied. AIM The study investigated the vasoreactivity of the plants and assessed the underlying mechanisms using isolated arteries. STUDY DESIGN Aqueous-ethanolic extracts of aerial parts of C. edulis, D. scandens and C. gynandra were prepared by maceration before being subjected to multi-step liquid-liquid fractionation with solvents of increasing polarity. The vasoreactivity of the extracts and fractions were assessed on isolated porcine coronary artery and rat aorta using organ chambers, the role of nitric oxide (NO) using NG-nitro-L-arginine (NO synthase inhibitor), prostanoids using indomethacin (cyclooxygenases inhibitor) and endothelium-dependent hyperpolarization using TRAM-34 plus UCL 1684 (inhibitors of calcium-dependent K+ channels), and the vascular uptake of polyphenols using Neu reagent. RESULTS The aqueous-ethanolic crude extract of C. edulis (CECE) induced potent relaxations that were exclusively endothelium-dependent and more pronounced than those to D. scandens and C. gynandra. The n-butanolic fraction of C. edulis (CEBF) was more active than the cyclohexane, dichloromethane, and ethyl acetate fractions. The relaxation induced by CECE and CEBF were inhibited by NG-nitro-L-arginine and affected neither by TRAM-34 plus UCL 1684 nor by indomethacin. CEBF induced sustained endothelium-dependent relaxations for at least 60 min, and inhibited, in a concentration-dependent manner, contractions to KCl, CaCl2, U46619 and serotonin in rings with endothelium. Analysis of CEBF by LCHRMS indicated the presence of polyphenols, terpenes, and alkaloids. Exposure of coronary artery and aorta rings to CEBF caused the accumulation of polyphenols predominantly in the endothelium. CONCLUSION C. edulis leaf extract induced pronounced endothelium-dependent relaxations and inhibited contractile responses by stimulating the endothelial formation of NO. LCHRMS analysis of the most active fraction, the butanolic fraction, revealed the presence of numerous compounds including polyphenols, terpenes, and alkaloids. The polyphenols of CEBF accumulated preferentially in the endothelium of the arterial wall. Thus, these observations support the folkloric use of C. edulis in hypertension.
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Affiliation(s)
- Ursula Hounguè
- INSERM UMR 1260, Regenerative Nanomedicine, University of Strasbourg, Strasbourg, France; Medicinal Organic Chemistry Laboratory, Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Benin.
| | - Claire Villette
- CNRS, Plant Imaging and Mass Spectrometry (PIMS), IBMP, University of Strasbourg, Strasbourg, France.
| | - Jean-Marie Tokoudagba
- Medicinal Organic Chemistry Laboratory, Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Benin
| | - Ahmed B Chaker
- INSERM UMR 1260, Regenerative Nanomedicine, University of Strasbourg, Strasbourg, France
| | - Lamia Remila
- INSERM UMR 1260, Regenerative Nanomedicine, University of Strasbourg, Strasbourg, France
| | - Cyril Auger
- INSERM UMR 1260, Regenerative Nanomedicine, University of Strasbourg, Strasbourg, France.
| | - Dimitri Heintz
- CNRS, Plant Imaging and Mass Spectrometry (PIMS), IBMP, University of Strasbourg, Strasbourg, France.
| | - Fernand A Gbaguidi
- Medicinal Organic Chemistry Laboratory, Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Benin
| | - Valérie B Schini-Kerth
- INSERM UMR 1260, Regenerative Nanomedicine, University of Strasbourg, Strasbourg, France.
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Yu Y, Pei F, Li Z. Orientin and vitexin attenuate lipopolysaccharide-induced inflammatory responses in RAW264.7 cells: a molecular docking study, biochemical characterization, and mechanism analysis. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.04.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Xu Y, Li X, Wang H. Protective Roles of Apigenin Against Cardiometabolic Diseases: A Systematic Review. Front Nutr 2022; 9:875826. [PMID: 35495935 PMCID: PMC9051485 DOI: 10.3389/fnut.2022.875826] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 03/14/2022] [Indexed: 12/12/2022] Open
Abstract
Apigenin is a flavonoid with antioxidant, anti-inflammatory, and anti-apoptotic activity. In this study, the potential effects of apigenin on cardiometabolic diseases were investigated in vivo and in vitro. Potential signaling networks in different cell types induced by apigenin were identified, suggesting that the molecular mechanisms of apigenin in cardiometabolic diseases vary with cell types. Additionally, the mechanisms of apigenin-induced biological response in different cardiometabolic diseases were analyzed, including obesity, diabetes, hypertension and cardiovascular diseases. This review provides novel insights into the potential role of apigenin in cardiometabolic diseases.
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Affiliation(s)
- Yajie Xu
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, China
| | - Xue Li
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Xue Li,
| | - Hui Wang
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Hui Wang,
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12
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Azzane A, Azzaoui B, Akdad M, Bouadid I, Eddouks M. Effect of Calamintha officinalis on Vascular Contractility and Angiotensinconverting Enzyme-2. Cardiovasc Hematol Agents Med Chem 2022; 20:219-236. [PMID: 35236273 DOI: 10.2174/1871525720666220302125242] [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: 09/14/2021] [Revised: 10/18/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
AIMS The study aimed to assess the antihypertensive activity of Calamintha officinalis. BACKGROUND Calamintha officinalis (CO) is a medicinal and aromatic herb as well as an antihypertensive plant that is widely used for its medicinal properties in several regions. OBJECTIVE This study aimed to evaluate the effect of the aqueous extract of Calamintha officinalis (AECO) on vasorelaxant activity and arterial blood pressure under normal and hypertensive states in rats. Additionally, the effect of AECO on vascular angiotensin-converting enzyme 2 (ACE-2) was assessed. METHODS In the current study, AECO (100 mg/Kg) was prepared, and its antihypertensive ability was assessed in L-NG-Nitro arginine methyl ester (L-NAME)-induced hypertensive rats. Blood pressure and heart rate were recorded for 6 h for the acute experiment and during seven days for the subchronic treatment. RESULTS The results indicated that AECO reduced the systolic, diastolic, and mean arterial blood pressure in hypertensive rats. In addition, the study showed that AECO exerts a vasorelaxant ability through the sGC-cGMP induction pathway, vascular cyclooxygenase pathway, and the opening of K+ channels. However, AECO had no inhibitory effect on aortic ACE-2. CONCLUSION The study illustrates the beneficial action of AECO as an antihypertensive and vasorelaxant agent.
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Affiliation(s)
- Amine Azzane
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Boutalamine, Errachidia, 52000, Morocco
| | - Bouchra Azzaoui
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Boutalamine, Errachidia, 52000, Morocco
| | - Mourad Akdad
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Boutalamine, Errachidia, 52000, Morocco
| | - Ismail Bouadid
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Boutalamine, Errachidia, 52000, Morocco
| | - Mohamed Eddouks
- Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, Boutalamine, Errachidia, 52000, Morocco
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Wang X, Li J, Zhao D, Li J. |Therapeutic and preventive effects of apigenin in cerebral ischemia: a review. Food Funct 2022; 13:11425-11437. [DOI: 10.1039/d2fo02599j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
APG can exert various protective effects against cerebral ischemia. Moreover, APG has shown a highly promising ability to prevent cerebral ischemia in terms of regulating blood glucose, blood pressure, lipids and gut microbes.
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Affiliation(s)
- Xu Wang
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
- School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Jinjian Li
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Dexi Zhao
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Jinhua Li
- School of Public Health, Jilin University, Changchun, Jilin, 130021, China
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Atucha NM, Romecín P, Vargas F, García-Estañ J. Effects of flavonoids in experimental models of arterial hypertension. Curr Top Med Chem 2021; 22:735-745. [PMID: 34749613 DOI: 10.2174/1568026621666211105100800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/21/2021] [Accepted: 08/12/2021] [Indexed: 11/22/2022]
Abstract
Flavonoids are a class of substances of a vegetal origin with many interesting actions from the point of view of human disease. Interest in flavonoids in the diet has increased in recent years due to the publication of basic, clinical and epidemiological studies that have shown a whole array of salutory effects related to intake of flavonols and flavones as well as a lower morbility and mortality of cardiovascular diseases. Since arterial hypertension is the most common modifiable risk factor for cardiovascular diseases, this review will focus mainly on the effects of flavonoids on the cardiovascular system with relation to the elevation of blood pressure. Its antihypertensive effects as well as the many investigations performed in experimental models of arterial hypertension are reviewed in this mini-review.
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Affiliation(s)
- Noemi M Atucha
- Departmento de Fisiología, Facultad de Medicina, Instituto Murciano de Investigación Biomédica, Universidad de Murcia, Murcia, and Granada. Spain
| | - Paola Romecín
- Departmento de Fisiología, Facultad de Medicina, Instituto Murciano de Investigación Biomédica, Universidad de Murcia, Murcia, and Granada. Spain
| | - Felix Vargas
- Departmento de Fisiología, Facultad de Medicina, Instituto Murciano de Investigación Biomédica, Universidad de Murcia, Murcia, and Granada. Spain
| | - Joaquin García-Estañ
- Departmento de Fisiología, Facultad de Medicina, Instituto Murciano de Investigación Biomédica, Universidad de Murcia, Murcia, and Granada. Spain
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15
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Cao Y, Xie L, Liu K, Liang Y, Dai X, Wang X, Lu J, Zhang X, Li X. The antihypertensive potential of flavonoids from Chinese Herbal Medicine: A review. Pharmacol Res 2021; 174:105919. [PMID: 34601080 DOI: 10.1016/j.phrs.2021.105919] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 12/11/2022]
Abstract
With the coming of the era of the aging population, hypertension has become a global health burden to be dealt with. Although there are multiple drugs and procedures to control the symptoms of hypertension, the management of it is still a long-term process, and the side effects of conventional drugs pose a burden on patients. Flavonoids, common compounds found in fruits and vegetables as secondary metabolites, are active components in Chinese Herbal Medicine. The flavonoids are proved to have cardiovascular benefits based on a plethora of animal experiments over the last decade. Thus, the flavonoids or flavonoid-rich plant extracts endowed with anti-hypertension activities and probable mechanisms were reviewed. It has been found that flavonoids may affect blood pressure in various ways. Moreover, despite the substantial evidence of the potential for flavonoids in the control of hypertension, it is not sufficient to support the clinical application of flavonoids as an adjuvant or core drug. So the synergistic effects of flavonoids with other drugs, pharmacokinetic studies, clinical trials and the safety of flavonoids are also incorporated in the discussion. It is believed that more breakthrough studies are needed. Overall, this review may shed some new light on the explicit recognition of the mechanisms of anti-hypertension actions of flavonoids, pointing out the limitations of relevant research at the current stage and the aspects that should be strengthened in future researches.
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Affiliation(s)
- Yi Cao
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Long Xie
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Kai Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Youdan Liang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Xiaolin Dai
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Xian Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Jing Lu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Xumin Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Xiaofang Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China.
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Gerardi G, Cavia-Saiz M, Muñiz P. From winery by-product to healthy product: bioavailability, redox signaling and oxidative stress modulation by wine pomace product. Crit Rev Food Sci Nutr 2021; 62:7427-7448. [PMID: 33951976 DOI: 10.1080/10408398.2021.1914542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The wine pomace is the main winery by-products that suppose an economic and environmental problem and their use as a functional ingredient are being increasingly recognized as a good and inexpensive source of bioactive compounds. In this sense, it is known the potential health properties of wine pomace products in the prevention of disorders associated with oxidative stress and inflammation such as endothelial dysfunction, hypertension, hyperglycemia, diabetes, obesity. Those effects are due to the bioactive compounds of wine pomace and the mechanisms concern especially modulation of antioxidant/prooxidant activity, improvement of nitric oxide bioavailability, reduction of pro-inflammatory cytokines and modulation of antioxidant/inflammatory signal pathways. This review mainly summarizes the mechanisms of wine pomace products as modulators of oxidative status involved in cell pathologies as well as their potential therapeutic use for cardiovascular diseases. For this purpose, the review provides an overview of the findings related to the wine pomace bioactive compounds profile, their bioavailability and the action mechanisms for maintaining the redox cell balance involved in health benefits. The review suggests an important role for wine pomace product in cardiovascular diseases prevention and their regular food intake may attenuate the development and progression of comorbidities associated with cardiovascular diseases.
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Affiliation(s)
- Gisela Gerardi
- Department of Biotechnology and Food Science, Faculty of Sciences, University of Burgos, Burgos, Spain
| | - Mónica Cavia-Saiz
- Department of Biotechnology and Food Science, Faculty of Sciences, University of Burgos, Burgos, Spain
| | - Pilar Muñiz
- Department of Biotechnology and Food Science, Faculty of Sciences, University of Burgos, Burgos, Spain
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Turghun C, Bakri M, Abdulla R, Ma Q, Aisa HA. Comprehensive characterisation of phenolics from Nitraria sibirica leaf extracts by UHPLC-quadrupole-orbitrap- MS and evaluation of their anti-hypertensive activity. JOURNAL OF ETHNOPHARMACOLOGY 2020; 261:113019. [PMID: 32540258 DOI: 10.1016/j.jep.2020.113019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/23/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE For more than ten scores years, the leaves and fruits of Nitraria sibirica have been used as a natural remedy for indigestion, irregular manes, and hypertension in the Middle East and Central Asia, especially, are recommended for hypertension treatment in the northwest region, China. AIM OF THE STUDY we aimed to support the traditional usage of N. sibirica leaves as pharmaceuticals or dietary supplements in treatment of hypertension by investigating their chemical constituents and anti-hypertensive activity.
METHODS: We identified the chemical composition of N. sibirica leaves ethanolic purified extract (NSL-EPE) using UHPLC-quadrupole-orbitrap-MS, and quantified the main chemical constituents by an analytical method established and validated. We also evaluated anti-hypertensive activity of NSL-EPE using spontaneously hypertensive rats (SHR): blood pressure was measured weekly by non-invasive blood pressure (NIBP) measurements; hemodynamic parameters, biochemical and clinical chemistry variables in plasma, serum and kidney tissue were measured after 10 weeks of treatment with NSL-EPE as well.
RESULTS: UHPLC-quadrupole-orbitrap-MS analysis identified 52 compounds, of which 40 compounds were reported for the first time in N. sibirica. 11 phenolic compounds further quantitatively analyzed, among which the most abundant compound was found to be clovin (8.8%). Systolic blood pressure decreased progressively from the second treatment week compared to that in non-treated SHRs. The plasma endothelin, aldosterone, angiotensin II levels were significantly increased, while the level of NOX was significantly decreased; glutathione to oxidized glutathione ratio, superoxide dismutase and total catalase levels in the kidney tissue were markedly accelerated, while malondialdehyde level was significantly reduced in NSL-EPE treated SHRs. Moreover, the serum cholesterol, triglyceride, blood uria nitrogen and creatinine were attenuated in NSL-EPE treated SHRs (P < 0.05), but in sharp contrast to those values in the water-treated SHRs. CONCLUSION This study screened out leading compounds from N. sibirica and offered a new understanding of the antihypertensive properties of N. sibirica leaves, by which inhibit oxidative stress-induced endothelial dysfunction and improve lipid profiles.
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Affiliation(s)
- Chimengul Turghun
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China; University of the Chinese Academy of Sciences, 100049, Beijing, China
| | - Mahinur Bakri
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Rahima Abdulla
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Qingling Ma
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Haji Akber Aisa
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China.
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Potue P, Maneesai P, Kukongviriyapan U, Prachaney P, Pakdeechote P. Cratoxylum Formosum extract exhibits antihypertensive effects via suppressing the renin-angiotensin cascade in hypertensive rats. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Ntchapda F, Bonabe C, Atsamo AD, Kemeta Azambou DR, Bekono Fouda Y, Imar Djibrine S, Seke Etet PF, Théophile D. Effect of Aqueous Extract of Adansonia digitata Stem Bark on the Development of Hypertension in L-NAME-Induced Hypertensive Rat Model. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2020; 2020:3678469. [PMID: 33014103 PMCID: PMC7519996 DOI: 10.1155/2020/3678469] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 08/23/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Adansonia digitata is a plant used against cardiovascular disorders in African folk medicine. We assessed the effects of the aqueous extract of its stem bark on the development of hypertension in L-NAME-induced hypertensive rats. METHODS The animals were administered L-NAME once daily for 3 weeks (25 mg/kg, i.p.), concomitantly with aqueous extract of A. digitata stem bark (100 and 200 mg/kg, p.o.) or captopril (20 mg/kg, p.o.). Then, hemodynamic and electrocardiographic parameters, oxidative stress markers, and the lipid profile were assessed in the blood and heart, aorta, and kidney homogenates, and histopathological analyses were performed. RESULTS L-NAME-induced hypertensive control animals, but not the animals concomitantly treated with A. digitata extract, displayed increases in the mean arterial blood pressure (21.64% difference, p < 0.001, vs. dose 200 mg/kg), systolic arterial blood pressure (21.33%, p < 0.001), and the diastolic arterial blood pressure (21.84%, p < 0.001). In addition, hypertensive control animals displayed (i) increases in serum triglycerides, total cholesterol, LDL, and creatinine levels, malondialdehyde and transaminase activities, and atherogenic index; (ii) decreases in serum HDL, catalase, reduced glutathione, and nitric oxide; and (iii) aorta wall thickening, inflammatory cell infiltration, and cell loss in the cardiac muscle and renal tissues. As captopril, the extract prevented hypertension-like changes in lipid profile, cardiac, hepatic, and renal affection indicators, and oxidative stress markers. CONCLUSION Our findings suggest that the extract of A. digitata has antihypertensive and antioxidant effects in L-NAME-induced hypertension rat models. These effects partly justify the traditional medicine use against cardiovascular disorders.
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Affiliation(s)
- Fidèle Ntchapda
- Department of Biological Sciences, Faculty of Sciences, University of Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon
| | - Christian Bonabe
- Department of Biological Sciences, Faculty of Sciences, University of Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon
| | - Albert Donatien Atsamo
- Department of Animal Biology and Physiology, Laboratory of Animal Physiology, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - David Romain Kemeta Azambou
- Department of Biological Sciences, Faculty of Sciences, University of Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon
| | - Yannick Bekono Fouda
- Department of Animal Biology and Physiology, Laboratory of Animal Physiology, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Soudy Imar Djibrine
- Institut Universitaire des Sciences et Techniques d'Abéché (IUSTA), P.O. Box 6077, N'Djamena, Chad
| | - Paul F. Seke Etet
- Department of Physiological Sciences and Biochemistry, FMBS, University of Ngaoundéré, Ngaoundéré, P.O. Box 454, Cameroon
| | - Dimo Théophile
- Department of Animal Biology and Physiology, Laboratory of Animal Physiology, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
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Effect of a Combination of Citrus Flavones and Flavanones and Olive Polyphenols for the Reduction of Cardiovascular Disease Risk: An Exploratory Randomized, Double-Blind, Placebo-Controlled Study in Healthy Subjects. Nutrients 2020; 12:nu12051475. [PMID: 32438719 PMCID: PMC7284884 DOI: 10.3390/nu12051475] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/12/2020] [Accepted: 05/16/2020] [Indexed: 12/12/2022] Open
Abstract
A single-center, randomized, double-blind controlled trial was conducted to assess the efficacy of a food supplement based on a combination of grapefruit, bitter orange, and olive extracts administered for eight weeks (n = 51) versus placebo (n = 45) on reduction of cardiovascular risk in healthy volunteers. Study variables included flow-mediated vasodilation (FMD), blood pressure (BP), lipid profile, thrombotic status, oxidative stress biomarkers, inflammation-related biomarkers, anthropometric variables, quality of life, and physical activity. The per-protocol data set was analyzed. In the active product group, there were statistically significant within-group differences at eight weeks as compared with baseline in FMD, systolic and diastolic BP, total cholesterol, LDL-C, LDL-oxidase, oxidized/reduced glutathione ratio, protein carbonyl, and IL-6. Significant between-group differences in these variables were also found. Significant changes in anthropometric variables and quality of life were not observed in the study groups. Changes in the level of physical activity were not recorded. Treatment with the active product was well tolerated. All these findings, taken together, support a beneficial effect of supplementation with a mixture of grapefruit, bitter orange fruits, and olive leaf extracts on underlying mechanisms that may interact each other to decrease the cardiovascular risk in healthy people.
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Djemam N, Lassed S, Gül F, Altun M, Monteiro M, Menezes-Pinto D, Benayache S, Benayache F, Zama D, Demirtas I, Morato M. Characterization of ethyl acetate and n-butanol extracts of Cymbopogon schoenanthus and Helianthemum lippii and their effect on the smooth muscle of the rat distal colon. JOURNAL OF ETHNOPHARMACOLOGY 2020; 252:112613. [PMID: 31981748 DOI: 10.1016/j.jep.2020.112613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 11/24/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Cymbopogon schoenanthus (C. schoenanthus) and Helianthemum lippii (H. lippii) are Saharan species found in the South West of Algeria, in the region of Bechar. Both plants are used in traditional medicine to treat gastrointestinal disorders. OBJECTIVE The aim of our study was to characterize the composition of the ethyl acetate (EtOAc) and n-Butanol (n-BuOH) extracts of C. schoenanthus and H. lippii, and to elucidate and compare their effect on the reactivity of the rat distal colon. MAIN METHODS The plants were macerated in a hydroalcoholic solution. After concentration, the aqueous solutions of the residues were submitted to liquid-liquid extractions to obtain EtOAc and n-BuOH extracts. The phenolic and flavonoid content of the extracts was determined by high performance liquid chromatography coupled with mass spectrometry with a time of flight analyzer (HPLC-TOF/MS). The effect of the extracts was tested on the rat distal colon, namely on the basal tone and on KCl- and Ach-induced precontracted preparations. RESULTS HPLC-TOF/MS identified 32 phenols and flavonoids in the extracts. The four extracts relaxed the rat distal colon, the effect being noticed on the basal tone and on the KCl- and Ach-induced precontractions. The EtOAc and the n-BuOH extracts of H. lippii decreased the basal tone of the rat distal colon more markedly than the correspondent extracts of C. schoenanthus. Moreover, the n-BuOH extract of C. schoenanthus decreased the basal tone more markedly than the EtOAc extract of this plant but there was no difference between extracts of H. lippii. The EtOAc extracts of both C. schoenanthus and H. lippii totally reverted both the KCl- and the Ach-induced precontraction of the rat distal colon. However, the n-BuOH extracts of the two plants reverted the Ach-precontracted colon but not the colon that has been precontracted with KCl. CONCLUSION Extracts of H. lippii contain a higher level of phenols compared to the extracts of C. schoenanthus. All extracts of C. schoenanthus and H. lippii caused marked relaxation of the isolated rat distal colon, either when applied directly or when tested over KCl- and Ach-induced precontraction. These results give support to the use of C. shoenanthus and H. lippii in traditional medicine, namely for gastrointestinal diseases.
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Affiliation(s)
- Nihed Djemam
- Laboratory of Pharmacology, Department of Drug Sciences, and LAQV@REQUIMTE, Faculty of Pharmacy, University of Porto, Portugal; Unité de Recherche: Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Département de Chimie, Université des Frères Mentouri Constantine 1, 25000, Constantine, Algeria.
| | - Somia Lassed
- Unité de Recherche: Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Département de Chimie, Université des Frères Mentouri Constantine 1, 25000, Constantine, Algeria; Laboratoire de Physiologie Animale, Département de Physiologie Animale, Université des Frères Mentouri Constantine 1, 25000, Constantine, Algeria.
| | - Fatih Gül
- Plant Research Laboratory, Department of Chemistry, Çankırı Karatekin University, Uluyazı Campus, Çankırı, Turkey.
| | - Muhammed Altun
- Plant Research Laboratory, Department of Chemistry, Çankırı Karatekin University, Uluyazı Campus, Çankırı, Turkey.
| | - Marisa Monteiro
- Laboratory of Pharmacology, Department of Drug Sciences, and LAQV@REQUIMTE, Faculty of Pharmacy, University of Porto, Portugal.
| | - Daniela Menezes-Pinto
- Laboratory of Pharmacology, Department of Drug Sciences, and LAQV@REQUIMTE, Faculty of Pharmacy, University of Porto, Portugal.
| | - Samir Benayache
- Unité de Recherche: Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Département de Chimie, Université des Frères Mentouri Constantine 1, 25000, Constantine, Algeria.
| | - Fadila Benayache
- Unité de Recherche: Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Département de Chimie, Université des Frères Mentouri Constantine 1, 25000, Constantine, Algeria.
| | - Djamila Zama
- Unité de Recherche: Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Département de Chimie, Université des Frères Mentouri Constantine 1, 25000, Constantine, Algeria.
| | - Ibrahim Demirtas
- Plant Research Laboratory, Department of Chemistry, Çankırı Karatekin University, Uluyazı Campus, Çankırı, Turkey.
| | - Manuela Morato
- Laboratory of Pharmacology, Department of Drug Sciences, and LAQV@REQUIMTE, Faculty of Pharmacy, University of Porto, Portugal.
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Melatonin as an Agent for Direct Pulp-Capping Treatment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17031043. [PMID: 32041360 PMCID: PMC7037898 DOI: 10.3390/ijerph17031043] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 12/15/2022]
Abstract
Melatonin plays an essential role in the regulation of bone growth. The actions that melatonin exerts on odontoblasts may be similar to its action on osteoblasts. This research aimed to evaluate the pulp response to melatonin used for direct pulp capping to evaluate the antioxidant effect of melatonin administered orally and its influence on dental pulp. Direct pulp capping was performed on the upper molars of Sprague Dawley rats using melatonin or Mineral Trioxide Aggregate (MTA). The study groups were: MTA; Melatonin; MTA + Melatonin administered orally; and Melatonin + Melatonin administered orally. In the latter two groups, the animals drank water dosed with melatonin ad libitum (10 mg/100 mL). After 30 days, the animals were sacrificed, and 5 ml of blood, the kidneys, and the liver were extracted in order to evaluate oxidative stress using thiobarbituric acid reactive substances testing (TBARS). Fragments of the maxilla containing the study molars were prepared for histological evaluation. The degree of pulp inflammation and pulp necrosis, the presence of reparative dentin and dentin bridging the pulp chamber, the presence and regularity of the odontoblastic layer, and the presence of pulp fibrosis were evaluated. No significant differences were found between the four study groups for any of the studied histological variables. The oral administration of melatonin did not modify the local effects of MTA or melatonin on dental pulp, or reduce basal-level oxidative stress. The effect of melatonin on pulp is similar to that of MTA and may be used as an agent for direct pulp capping.
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Abd Allah ESH, Ahmed MA, Makboul R, Abd El-Rahman MA. Effects of hydrogen sulphide on oxidative stress, inflammatory cytokines, and vascular remodelling in l-NAME-induced hypertension. Clin Exp Pharmacol Physiol 2020; 47:650-659. [PMID: 31868952 DOI: 10.1111/1440-1681.13240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/29/2019] [Accepted: 12/18/2019] [Indexed: 12/12/2022]
Abstract
This study was designed to evaluate the protective effects of hydrogen sulphide (H2 S) against NG-Nitro l-Arginine Methyl Ester (l-NAME)-induced hypertension and its possible effects on the inflammatory process, oxidative stress, and vascular remodelling in rats. Forty male Wistar Albino rats were assigned to four equal groups: the control group, the H2 S control group, the hypertensive group, and the treated group, which received concomitant treatment with sodium hydrosulphide (NaHS) and l-NAME. Systolic blood pressure (SBP) was measured weekly. Serum levels of nitric oxide (NO), total peroxide, and total antioxidant capacity (TAC) were measured and the oxidative stress index (OSI) was calculated. Aortic weight and length were measured and the aortic weight/length ratio determined. Aortic fold expression of interferon-γ (IFN-γ) and vascular cell adhesion molecule-1 (VCAM-1) mRNA was measured using qPCR. Aortic media thickness and elastin content were measured morphometrically. l-NAME administration increased SBP, serum levels of total peroxide and OSI, but reduced serum levels of NO and TAC. Aortic fold expression of IFN-γ and VCAM-1 mRNA, aortic weight, aortic weight/length ratio, aortic media thickness, and elastin area percentage were increased in the hypertensive group. Concurrent administration of l-NAME and H2 S attenuated these changes. Thus, H2 S could attenuate the increase in ABP through restoration of the NO level, reduction in the oxidative state, and attenuation of the inflammatory process, thereby reduced vascular remodelling.
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Affiliation(s)
- Eman S H Abd Allah
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Marwa A Ahmed
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Rania Makboul
- Pathology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mona A Abd El-Rahman
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
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Zheng Y, Zhang R, Shi W, Li L, Liu H, Chen Z, Wu L. Metabolism and pharmacological activities of the natural health-benefiting compound diosmin. Food Funct 2020; 11:8472-8492. [DOI: 10.1039/d0fo01598a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Diosmin is a famous natural flavonoid for treating chronic venous insufficiency and varicose veins.
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Affiliation(s)
- Yizhou Zheng
- College of Pharmacy
- Gannan Medical University
- Ganzhou
- China
| | - Rui Zhang
- College of Pharmacy
- Gannan Medical University
- Ganzhou
- China
| | - Weimei Shi
- College of Pharmacy
- Gannan Medical University
- Ganzhou
- China
| | - Linfu Li
- College of Pharmacy
- Gannan Medical University
- Ganzhou
- China
| | - Hai Liu
- College of Pharmacy
- Gannan Medical University
- Ganzhou
- China
| | - Zhixi Chen
- College of Pharmacy
- Gannan Medical University
- Ganzhou
- China
| | - Longhuo Wu
- College of Pharmacy
- Gannan Medical University
- Ganzhou
- China
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In vitro and in vivo activities of flavonoids – apigenin, baicalin, chrysin, scutellarin – in regulation of hypertension – a review for their possible effects in pregnancy-induced hypertension. HERBA POLONICA 2019. [DOI: 10.2478/hepo-2019-0001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Summary
Flavonoids and their conjugates are the most important group of natural chemical compounds in drug discovery and development. The search for pharmacological activity and new mechanisms of activity of these chemical compounds, which may inhibit mediators of inflammation and influence the structure and function of endothelial cells, can be an interesting pharmacological strategy for the prevention and adjunctive treatments of hypertension, especially induced by pregnancy. Because cardiovascular diseases have multi-factorial pathogenesis these natural chemical compounds with wide spectrum of biological activities are the most interesting source of new drugs. Extracts from one of the most popular plant used in Traditional Chinese Medicine, Scutellaria baicalensis Georgi could be a very interesting source of flavonoids because of its exact content in quercetin, apigenin, chrysin and scutellarin as well as in baicalin. These flavonoids exert vasoprotective properties and many activities such as: anti-oxidative via several pathways, anti-in-flammatory, anti-ischaemic, cardioprotective and anti-hypertensive. However, there is lack of summaries of results of studies in context of potential and future application of flavonoids with determined composition and activity. Our review aims to provide a literature survey of in vitro, in vivo and ex vivo pharmacological studies of selected flavonoids (apigenin, chrysin and scutellarin, baicalin) in various models of hypertension carried out in 2008–2018.
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Feng J, Wang X, Li H, Wang L, Tang Z. Silencing of Annexin A1 suppressed the apoptosis and inflammatory response of preeclampsia rat trophoblasts. Int J Mol Med 2018; 42:3125-3134. [PMID: 30272262 PMCID: PMC6202081 DOI: 10.3892/ijmm.2018.3887] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 09/11/2018] [Indexed: 12/22/2022] Open
Abstract
Preeclampsia (PE) is a disorder that is characterized by pregnancy-induced hypertension. It has been reported that Annexin A1 (ANXA1) is highly expressed in the plasma of women diagnosed with PE. Therefore, the present study aimed to examine the effect of ANXA1 on PE rats. The PE animal model was constructed in rats using Nω-nitro-L-arginine methyl ester (L-NAME), and the blood pressure and urine protein levels of rats were detected. The pathological features of placental tissue, and the levels of inflammatory factors and ANXA1 were respectively measured by hematoxylin-eosin staining, enzyme-linked immunosorbent assay and immunohistochemical assay. The activity of trophoblasts obtained from PE placental tissue was measured using immunofluorescence staining, while cell apoptosis was assessed using flow cytometry. The levels of associated factors were determined by reverse transcription-quantitative polymerase chain reaction and western blot analysis. The results identified that systolic blood pressure, diastolic blood pressure, mean arterial pressure and urine protein levels were enhanced, and that the contents of ANXA1, tumor necrosis factor alpha (TNF-α), interleukin (IL)-1β, IL-6 and IL-8 were increased in the L-NAME group. Transfection with small interfering RNA (siRNA)-ANXA1 markedly decreased the apoptosis and inflammatory response of trophoblasts. In addition, siRNA-ANXA1 upregulated the levels of B-cell lymphoma-2 (Bcl-2) and pro-caspase-3, and downregulated the levels of Bcl-2-associated X protein, cleaved-caspase-3, TNF-α, IL-1β, IL-6 and IL-8. Furthermore, siRNA-ANXA1 repressed the phosphorylation of Janus kinase 2 (JAK2) and signal transducer and activator of transcription 3 (STAT3); however, siRNA-ANXA1 did not alter the levels of JAK2 and STAT3. Therefore, silencing of ANXA1 suppressed the apoptosis and inflammatory response of PE rat trophoblasts, and downregulated JAK2/STAK3 pathway.
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Affiliation(s)
- Jing Feng
- Department of Gynaecology and Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Xinling Wang
- Department of Gynaecology and Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Hongyan Li
- Department of Gynaecology and Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Li Wang
- Department of Gynaecology and Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Zengjun Tang
- Department of Gynaecology and Obstetrics, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
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Paredes MD, Romecín P, Atucha NM, O'Valle F, Castillo J, Ortiz MC, García-Estañ J. Moderate Effect of Flavonoids on Vascular and Renal Function in Spontaneously Hypertensive Rats. Nutrients 2018; 10:nu10081107. [PMID: 30115889 PMCID: PMC6115889 DOI: 10.3390/nu10081107] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/14/2018] [Accepted: 08/15/2018] [Indexed: 01/05/2023] Open
Abstract
Many studies have shown that flavonoids are effective as antihypertensive drugs in arterial hypertension. In the present work, we have analyzed the effects of some flavonoid extracts in the spontaneous hypertensive rat model (SHR). An important feature of this study is that we have used a low dose, far from those that are usually applied in human therapy or experimental animals, a dose that responded to the criterion of a potential future commercial use in human subjects. Treatments were carried out for 6 and 12 weeks in two groups of SHR rats, which received apigenin, lemon extract, grapefruit + bitter orange (GBO) extracts, and cocoa extract. Captopril was used as a positive control in the SHR group treated for 6 weeks (SHR6) and Diosmin was used as the industry reference in the SHR group treated for 12 weeks (SHR12). Captopril and GBO extracts lowered the high arterial pressure of the SHR6 animals, but none of the extracts were effective in the SHR12 group. Apigenin, lemon extract (LE), GBO, and captopril also improved aortic vascular relaxation and increased plasma and urinary excretion of nitrites, but only in the SHR6 group. Kidney and urinary thiobarbituric acid reactive substances (TBARS) were also significantly reduced by GBO in the SHR6 rats. Apigenin also improved vascular relaxation in the SHR12 group and all the flavonoids studied reduced urinary thiobarbituric acid reactive substances (TBARS) excretion and proteinuria. Vascular abnormalities, such as lumen/wall ratio in heart arteries and thoracic aorta, were moderately improved by these treatments in the SHR6 group. In conclusion, the flavonoid-rich extracts included in this study, especially apigenin, LE and GBO improved vascular vasodilatory function of young adult SHRs but only the GBO-treated rats benefited from a reduction in blood pressure. These extracts may be used as functional food ingredients with a moderate therapeutic benefit, especially in the early phases of arterial hypertension.
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Affiliation(s)
- María D Paredes
- Department of Physiology, School of Medicine & Biosanitary Research Murcian Institute (IMIB), University of Murcia, 30120 Murcia, Spain.
| | - Paola Romecín
- Department of Physiology, School of Medicine & Biosanitary Research Murcian Institute (IMIB), University of Murcia, 30120 Murcia, Spain.
| | - Noemí M Atucha
- Department of Physiology, School of Medicine & Biosanitary Research Murcian Institute (IMIB), University of Murcia, 30120 Murcia, Spain.
| | - Francisco O'Valle
- Department of Pathological Anatomy, School of Medicine, IBIMER (CIBM) & Ibs.GRANADA, University of Granada, 18016 Granada, Spain.
| | - Julián Castillo
- Institute of Aging & R & D, Nutrafur SA-FRUTAROM Group, 30820 Alcantarilla , Spain.
| | - María Clara Ortiz
- Department of Physiology, School of Medicine & Biosanitary Research Murcian Institute (IMIB), University of Murcia, 30120 Murcia, Spain.
| | - Joaquín García-Estañ
- Department of Physiology, School of Medicine & Biosanitary Research Murcian Institute (IMIB), University of Murcia, 30120 Murcia, Spain.
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