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Campión R, Gonzalez-Navarro CJ, Luisa Martínez López A, Cristina Martínez-Oharriz M, Matías C, Sáiz-Abajo MJ, Collantes M, Peñuelas I, Irache JM. Zein-based nanospheres and nanocapsules for the encapsulation and oral delivery of quercetin. Int J Pharm 2023; 643:123216. [PMID: 37423375 DOI: 10.1016/j.ijpharm.2023.123216] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/11/2023]
Abstract
In this study, the ability of zein nanospheres (NS) and zein nanocapsules containing wheat germ oil (NC) to enhance the bioavailability and efficacy of quercetin was evaluated. Both types of nanocarriers had similar physico-chemical properties, including size (between 230 and 250 nm), spherical shape, negative zeta potential, and surface hydrophobicity. However, NS displayed a higher ability than NC to interact with the intestinal epithelium, as evidenced by an oral biodistribution study in rats. Moreover, both types of nanocarriers offered similar loading efficiencies and release profiles in simulated fluids. In C. elegans, the encapsulation of quercetin in nanospheres (Q-NS) was found to be two twice more effective than the free form of quercetin in reducing lipid accumulation. For nanocapsules, the presence of wheat germ oil significantly increased the storage of lipids in C. elegans; although the incorporation of quercetin (Q-NC) significantly counteracted the presence of the oil. Finally, nanoparticles improved the oral absorption of quercetin in Wistar rats, offering a relative oral bioavailability of 26% and 57% for Q-NS and Q-NC, respectively, compared to a 5% for the control formulation. Overall, the study suggests that zein nanocarriers, particularly nanospheres, could be useful in improving the bioavailability and efficacy of quercetin.
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Affiliation(s)
- Raquel Campión
- NANO-VAC Research Group, Department of Chemistry and Pharmaceutical Technology, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
| | - Carlos J Gonzalez-Navarro
- Center for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
| | - Ana Luisa Martínez López
- NANO-VAC Research Group, Department of Chemistry and Pharmaceutical Technology, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
| | | | - Cristina Matías
- National Centre for Food Technology and Safety (CNTA), NA 134, Km. 53. 31570-San Adrián, Navarre, Spain
| | - María-José Sáiz-Abajo
- National Centre for Food Technology and Safety (CNTA), NA 134, Km. 53. 31570-San Adrián, Navarre, Spain
| | - Maria Collantes
- Radiopharmacy Unit, Clinica Universidad de Navarra, 31008 Pamplona, Spain; Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
| | - Ivan Peñuelas
- Radiopharmacy Unit, Clinica Universidad de Navarra, 31008 Pamplona, Spain; Translational Molecular Imaging Unit (UNIMTRA), Department of Nuclear Medicine, Clinica Universidad de Navarra, 31008 Pamplona, Spain; Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
| | - Juan M Irache
- NANO-VAC Research Group, Department of Chemistry and Pharmaceutical Technology, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain; Institute for Health Research (IdiSNA), 31008 Pamplona, Spain.
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Zou H, Ye H, Kamaraj R, Zhang T, Zhang J, Pavek P. A review on pharmacological activities and synergistic effect of quercetin with small molecule agents. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 92:153736. [PMID: 34560520 DOI: 10.1016/j.phymed.2021.153736] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/25/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Quercetin is a natural flavonoid, which widely exists in nature, such as tea, coffee, apples, and onions. Numerous studies have showed that quercetin has multiple biological activities such as anti-oxidation, anti-inflammatory, and anti-aging. Hence, quercetin has a significant therapeutic effect on cancers, obesity, diabetes, and other diseases. In the past decades, a large number of studies have shown that quercetin combined with other agents can significantly improve the overall therapeutic effect, compared to single use. PURPOSE This work reviews the pharmacological activities of quercetin and its derivatives. In addition, this work also summarizes both in vivo and in vitro experimental evidence for the synergistic effect of quercetin against cancers and metabolic diseases. METHODS An extensive systematic search for pharmacological activities and synergistic effect of quercetin was performed considering all the relevant literatures published until August 2021 through the databases including NCBI PubMed, Scopus, Web of Science, and Google Scholar. The relevant literatures were extracted from the databases with following keyword combinations: "pharmacological activities" OR "biological activities" OR "synergistic effect" OR "combined" OR "combination" AND "quercetin" as well as free-text words. RESULTS Quercetin and its derivatives possess multiple pharmacological activities including anti-cancer, anti-oxidant, anti-inflammatory, anti-cardiovascular, anti-aging, and neuroprotective activities. In addition, the synergistic effect of quercetin with small molecule agents against cancers and metabolic diseases has also been confirmed. CONCLUSION Quercetin cooperates with agents to improve the therapeutic effect by regulating signal molecules and blocking cell cycle. Synergistic therapy can reduce the dose of agents and avoid the possible toxic and side effects in the treatment process. Although quercetin treatment has some potential side effects, it is safe under the expected use conditions. Hence, quercetin has application value and potential strength as a clinical drug. Furthermore, quercetin, as the main effective therapeutic ingredient in traditional Chinese medicine, may effectively treat and prevent coronavirus disease 2019 (COVID-19).
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Affiliation(s)
- Haoyang Zou
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Haiqing Ye
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Rajamanikkam Kamaraj
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove CZ500 05, Czech Republic
| | - Tiehua Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Jie Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove CZ500 05, Czech Republic.
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Ahmed SHH, Gonda T, Hunyadi A. Medicinal chemistry inspired by ginger: exploring the chemical space around 6-gingerol. RSC Adv 2021; 11:26687-26699. [PMID: 35480015 PMCID: PMC9037716 DOI: 10.1039/d1ra04227k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/24/2021] [Indexed: 12/22/2022] Open
Abstract
Ginger (Zingiber officinale Roscoe) has been used as a spice and as a traditional remedy since ancient times, especially in traditional Chinese medicine. It has been applied as a treatment for many diseases either alone or in combination with other remedies. Many studies were conducted on ginger and its constituents and a wide array of bioactivities were reported, e.g., antioxidant, anti-inflammatory, antiemetic, and anticancer activity. Most of these had been correlated to gingerols and shogaols, the most abundant secondary metabolites in ginger. This inspired several research groups to explore the biomedical value of the chemical space around these compounds, and many of their synthetic or semi-synthetic analogues have been prepared and studied for various bioactivities. Thanks to this, many valuable structure activity relationships have been revealed for such compounds. Herein, we provide a brief summary on the synthetic derivatization efforts that had so far been implemented on 6-gingerol, the main constituent of fresh ginger. This review covers 160 natural, semisynthetic, or synthetic 6-gingerol derivatives and their reported bioactivities. Structure and reported bioactivities of semi-synthetic and synthetic 6-gingerol derivatives.![]()
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Affiliation(s)
- Sara Hassan Hassan Ahmed
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged Eötvös str. 6 H-6720 Szeged Hungary +3662546456.,Faculty of Pharmacy, University of Khartoum 1996 Khartoum Sudan
| | - Tímea Gonda
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged Eötvös str. 6 H-6720 Szeged Hungary +3662546456
| | - Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged Eötvös str. 6 H-6720 Szeged Hungary +3662546456.,Interdisciplinary Centre for Natural Products, University of Szeged Eötvös str. 6 H-6720 Szeged Hungary
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Meligi NM, Dyab AKF, Paunov VN. Sustained In Vitro and In Vivo Delivery of Metformin from Plant Pollen-Derived Composite Microcapsules. Pharmaceutics 2021; 13:1048. [PMID: 34371742 PMCID: PMC8309045 DOI: 10.3390/pharmaceutics13071048] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 12/29/2022] Open
Abstract
We developed a dual microencapsulation platform for the type 2 diabetes drug metformin (MTF), which is aimed to increase its bioavailability. We report the use of Lycopodium clavatum sporopollenin (LCS), derived from their natural spores, and raw Phoenix dactylifera L. (date palm) pollens (DPP) for MTF microencapsulation. MTF was loaded into LCS and DPP via a vacuum and a novel method of hydration-induced swelling. The loading capacity (LC) and encapsulation efficiency (EE) percentages for MTF-loaded LCS and MTF-loaded DPP microcapsules were 14.9% ± 0.7, 29.8 ± 0.8, and 15.2% ± 0.7, 30.3 ± 1.0, respectively. The release of MTF from MTF-loaded LCS microcapsules was additionally controlled by re-encapsulating the loaded microcapsules into calcium alginate (ALG) microbeads via ionotropic gelation, where the release of MTF was found to be significantly slower and pH-dependent. The pharmacokinetic parameters, obtained from the in vivo study, revealed that the relative bioavailability of the MTF-loaded LCS-ALG beads was 1.215 times higher compared to pure MTF, following oral administration of a single dose equivalent to 25 mg/kg body weight MTF to streptozotocin (STZ)-induced diabetic male Sprague-Dawley rats. Significant hypoglycemic effect was obtained for STZ-induced diabetic rats orally treated with MTF-loaded LCS-ALG beads compared to control diabetic rats. Over a period of 29 days, the STZ-induced diabetic rats treated with MTF-loaded LCS-ALG beads showed a decrease in the aspartate aminotransferase (AST), alanine aminotransferase (ALT), triglycerides, cholesterol, and low-density lipoprotein-cholesterol (LDL-C) levels, as well as an increase in glutathione peroxidase (GPx) and a recovery in the oxidative stress biomarker, lipid peroxidation (LPx). In addition, histopathological studies of liver, pancreas, kidney, and testes suggested that MTF-loaded LCS-ALG beads improved the degenerative changes in organs of diabetic rats. The LCS-ALG platform for dual encapsulation of MTF achieved sustained MTF delivery and enhancement of bioavailability, as well as the improved biochemical and histopathological characteristics in in vivo studies, opening many other intriguing applications in sustained drug delivery.
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Affiliation(s)
- Noha M. Meligi
- Zoology Department, Faculty of Science, Minia University, Minia 61519, Egypt;
| | - Amro K. F. Dyab
- Colloids & Advanced Materials Group, Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt;
| | - Vesselin N. Paunov
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nursultan 010000, Kazakhstan
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The Therapeutic Effects and Mechanisms of Quercetin on Metabolic Diseases: Pharmacological Data and Clinical Evidence. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6678662. [PMID: 34257817 PMCID: PMC8249127 DOI: 10.1155/2021/6678662] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/17/2021] [Accepted: 06/08/2021] [Indexed: 12/27/2022]
Abstract
Metabolic diseases have become major public health issues worldwide. Searching for effective drugs for treating metabolic diseases from natural compounds has attracted increasing attention. Quercetin, an important natural flavonoid, is extensively present in fruits, vegetables, and medicinal plants. Due to its potentially beneficial effects on human health, quercetin has become the focus of medicinal attention. In this review, we provide a timely and comprehensive summary of the pharmacological advances and clinical data of quercetin in the treatment of three metabolic diseases, including diabetes, hyperlipidemia, and nonalcoholic fatty liver disease (NAFLD). Accumulating evidences obtained from animal experiments prove that quercetin has beneficial effects on these three diseases. It can promote insulin secretion, improve insulin resistance, lower blood lipid levels, inhibit inflammation and oxidative stress, alleviate hepatic lipid accumulation, and regulate gut microbiota disorders in animal models. However, human clinical studies on the effects of quercetin in diabetes, hyperlipidemia, and NAFLD remain scarce. More clinical trials with larger sample sizes and longer trial durations are needed to verify its true effectiveness in human subjects. Moreover, another important issue that needs to be resolved in future research is to improve the bioavailability of quercetin. This review may provide valuable information for the basic research, drug development, and clinical application of quercetin in the treatment of metabolic diseases.
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Jivani AJ, Kapadiya KM, Khunt RC. Polar Solvent–Mediated Synthesis of Terminal Alkyne Derivatives of Thiazoles and Evaluation of Their Antidiabetic Activity. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021050067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Shawky LM, Morsi AA, El Bana E, Hanafy SM. The Biological Impacts of Sitagliptin on the Pancreas of a Rat Model of Type 2 Diabetes Mellitus: Drug Interactions with Metformin. BIOLOGY 2019; 9:E6. [PMID: 31881657 PMCID: PMC7167819 DOI: 10.3390/biology9010006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/22/2019] [Accepted: 12/23/2019] [Indexed: 12/25/2022]
Abstract
Sitagliptin, a dipeptidyl peptidase-4 (DPP-4) inhibitor, is a beneficial class of antidiabetic drugs. However, a major debate about the risk of developing pancreatitis is still existing. The aim of the work was to study the histological and immunohistochemical effects of sitagliptin on both endocrine and exocrine pancreases in a rat model of type 2 diabetes mellitus and to correlate these effects with the biochemical findings. Moreover, a possible synergistic effect of sitagliptin, in combination with metformin, was also evaluated. Fifty adult male rats were used and assigned into five equal groups. Group 1 served as control. Group 2 comprised of untreated diabetic rats. Group 3 diabetic rats received sitagliptin. Group 4 diabetic rats received metformin. Group 5 diabetic rats received both combined. Treatments were given for 4 weeks after the induction of diabetes. Blood samples were collected for biochemical assay before the sacrification of rats. Pancreases were removed, weighed, and were processed for histological and immunohistochemical examination. In the untreated diabetic group, the islets appeared shrunken with disturbed architecture and abnormal immunohistochemical reactions for insulin, caspase-3, and inducible nitric oxide synthase (iNOS). The biochemical findings were also disturbed. Morphometrically, there was a significant decrease in the islet size and islet number. Treatment with sitagliptin, metformin, and their combination showed an improvement, with the best response in the combined approach. No evidence of pancreatic injury was identified in the sitagliptin-treated groups. In conclusion, sitagliptin had a cytoprotective effect on beta-cell damage. Furthermore, the data didn't indicate any detrimental effects of sitagliptin on the exocrine pancreas.
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Affiliation(s)
- Lamiaa M. Shawky
- Department of Histology and Cell Biology, Benha Faculty of Medicine, Benha University, Benha 13511, Egypt;
| | - Ahmed A. Morsi
- Department of Histology and Cell Biology, Faculty of Medicine, Fayoum University, Fayoum 63511, Egypt
| | - Eman El Bana
- Department of Anatomy, Benha Faculty of Medicine, Benha University, Benha 13511, Egypt;
| | - Safaa Masoud Hanafy
- Department of Anatomy, Faculty of Medicine for Girls, Al-Azhar University, Cairo 11865, Egypt;
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A practical guide for designing effective nutraceutical combinations in the form of foods, beverages, and dietary supplements against chronic degenerative diseases. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.03.026] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Eitah HE, Maklad YA, Abdelkader NF, Gamal El Din AA, Badawi MA, Kenawy SA. Modulating impacts of quercetin/sitagliptin combination on streptozotocin-induced diabetes mellitus in rats. Toxicol Appl Pharmacol 2018; 365:30-40. [PMID: 30576699 DOI: 10.1016/j.taap.2018.12.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 12/14/2018] [Accepted: 12/17/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Since many diabetic patients require combination therapy, the use of herbal remedies with anti-diabetic activity represents a vital option in diabetes mellitus (DM) management. It has been reported that quercetin has hypoglycemic alongside anti-inflammatory and antioxidant activities. AIM The present study aimed to investigate the effectiveness of combining quercetin with sitagliptin; a selective dipeptidyl peptidase-IV (DPP-IV) inhibitor, in the management of streptozotocin (STZ)-induced diabetic rats. METHODS DM was induced by a single injection of STZ (45 mg/kg, i.p.) in male adult albino Wistar rats. Diabetic rats were orally treated with sitagliptin (70 mg/kg), quercetin (50 mg/kg) or their combination daily for three consecutive weeks. Serum levels of glucose, C-peptide, total cholesterol, triglycerides, malondialdehyde (MDA), superoxide dismutase, (SOD), reduced glutathione (GSH), tumor necrosis factor alpha, (TNF-α), nuclear factor kappa-B, (NF-κB) and adiponectin were estimated. In addition, histopathological, morphometrical and immunohistochemical examinations of pancreatic tissues were conducted. RESULTS The combined administration of quercetin and sitagliptin normalized serum C-peptide, MDA, and significantly increased SOD, GSH and decreased NF-κB more than sitagliptin alone. Moreover, this combination normalized Islet number, β-cells' number, area and perimeter alongside restoring the immunostaining intensity of β-cells. CONCLUSION Our results suggest the use of quercetin/sitagliptin combination for treating DM based on the observed improvements in glycemic control, metabolic profile, oxidative and inflammatory status, islet structure as well as β-cells function compared with either treatment alone.
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Affiliation(s)
- Hebatollah E Eitah
- Medicinal and Pharmaceutical Chemistry Department, Pharmacology Group, National Research Centre, Dokki, Giza, Egypt.
| | - Yousreya A Maklad
- Medicinal and Pharmaceutical Chemistry Department, Pharmacology Group, National Research Centre, Dokki, Giza, Egypt
| | - Noha F Abdelkader
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Giza, Egypt
| | | | - Manal A Badawi
- Pathology Department, National Research Centre, Dokki, Giza, Egypt
| | - Sanaa A Kenawy
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Giza, Egypt
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Mohammed A, Islam MS. Spice-Derived Bioactive Ingredients: Potential Agents or Food Adjuvant in the Management of Diabetes Mellitus. Front Pharmacol 2018; 9:893. [PMID: 30186162 PMCID: PMC6113848 DOI: 10.3389/fphar.2018.00893] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 07/23/2018] [Indexed: 01/31/2023] Open
Abstract
Spices possess tremendous therapeutic potential including hypoglycemic action, attributed to their bioactive ingredients. However, there is no study that critically reviewed the hypoglycemic potency, safety and the bioavailability of the spice-derived bioactive ingredients (SDBI). Therefore, the aim of the study was to comprehensively review all published studies regarding the hypoglycemic action of SDBI with the purpose to assess whether the ingredients are potential hypoglycemic agents or adjuvant. Factors considered were concentration/dosages used, the extent of blood glucose reduction, the IC50 values, and the safety concern of the SDBI. From the results, cinnamaldehyde, curcumin, diosgenin, thymoquinone (TQ), and trigonelline were showed the most promising effects and hold future potential as hypoglycemic agents. Conclusively, future studies should focus on improving the tissue and cellular bioavailability of the promising SDBI to achieve greater potency. Additionally, clinical trials and toxicity studies are with these SDBI are warranted.
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Affiliation(s)
- Aminu Mohammed
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Md. Shahidul Islam
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
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Wu HC, Horng CT, Tsai SC, Lee YL, Hsu SC, Tsai YJ, Tsai FJ, Chiang JH, Kuo DH, Yang JS. Relaxant and vasoprotective effects of ginger extracts on porcine coronary arteries. Int J Mol Med 2018; 41:2420-2428. [PMID: 29328426 DOI: 10.3892/ijmm.2018.3380] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 11/30/2017] [Indexed: 11/06/2022] Open
Abstract
Ginger (Zingiber officinale Roscoe) is a popular Chinese herbal medicine, which is considered to warm the stomach and dispel cold in traditional Chinese medicine. Ginger is widely used to treat stomach disorders, and it has been reported to exhibit antithrombotic activity via the inhibition of platelet aggregation and thromboxane B2 production in vitro. Cardiovascular disease is associated with the aberrant functioning of the heart and circulatory system; the relatively narrow vessels of the circulation are commonly affected and blocked by atherosclerosis, which may result in angina or heart attack. Numerous drugs and medicines are used to treat myocardial infarction; however, they are often associated with numerous side effects. Therefore, it is important to identify substitutive drugs with no unbearable side effects. In the present study, the relaxant effects of ginger crude extract (GCE) were determined on porcine coronary arteries. The DPPH radical scavenging assay, lucigenin‑enhanced chemiluminescence assay and western blot analysis were used to individually detect antioxidant assay of ginger extraction or superoxide anion produced by endothelial cells and molecular signaling. The results indicated that GCE induced relaxation of porcine coronary arteries in an endothelium‑dependent manner. GCE increased vasoprotection via the suppression of nitric oxide synthase and cyclooxygenase. In addition, GCE possessed antioxidant ability, as determined using 1,1‑diphenyl‑2‑picrylhydrazyl and lucigenin‑enhanced chemiluminescence assays. Taken together, the present study demonstrated that GCE exerts marked vasoprotective effects and free radical‑scavenging activities in porcine coronary arteries.
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Affiliation(s)
- Hsing-Chen Wu
- Department of Nutrition, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan, R.O.C
| | - Chi-Ting Horng
- Medical Education Center, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan, R.O.C
| | - Shih-Chang Tsai
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan, R.O.C
| | - You-Li Lee
- Department of Nutrition, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan, R.O.C
| | - Shou-Cheng Hsu
- Department of Pharmacy and Master Program, Tajen University, Pingtung 90741, Taiwan, R.O.C
| | - Yi-Jen Tsai
- Department of Pharmacy and Master Program, Tajen University, Pingtung 90741, Taiwan, R.O.C
| | - Fuu-Jen Tsai
- School of Post‑Baccalaureate Chinese Medicine, China Medical University, Taichung 40402, Taiwan, R.O.C
| | - Jo-Hua Chiang
- Department of Nursing, Chung‑Jen Junior College of Nursing, Health Sciences and Management, Chiayi 62241, Taiwan, R.O.C
| | - Daih-Huang Kuo
- Department of Pharmacy and Master Program, Tajen University, Pingtung 90741, Taiwan, R.O.C
| | - Jai-Sing Yang
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40447, Taiwan, R.O.C
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Yu Y, Zhou XZ, Ye L, Yuan Q, Freeberg S, Shi C, Zhu PW, Bao J, Jiang N, Shao Y. Rhamnazin attenuates inflammation and inhibits alkali burn-induced corneal neovascularization in rats. RSC Adv 2018; 8:26696-26706. [PMID: 35541079 PMCID: PMC9083096 DOI: 10.1039/c8ra03159b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/29/2018] [Indexed: 11/26/2022] Open
Abstract
The purpose of our study was to determine whether rhamnazin inhibits corneal neovascularization in the rat alkali burn model, and alleviates the inflammatory response of the cornea. Rhamnazin inhibited the proliferation of HUVEC cells in a dose-dependent manner, and it also inhibited the migration and luminal formation of HUVEC cells. 20 μM rhamnazin eye drops were applied to an animal model of corneal alkali burn neovascularization 4 times a day for 14 days. The corneal neovascularization in the rhamnazin group was obviously less than that in the PBS control group. In the rhamnazin group, the inflammatory index of the cornea decreased gradually over time, whereas the inflammatory index of the PBS group decreased only slightly with time. The corneal CNV area in the PBS group was significantly larger than that in the rhamnazin group. The expression level of VEGF protein of the rhamnazin group was lower than that in the PBS group, and the expression level of PEDF was significantly higher than that of the PBS group. Rhamnazin downregulated the expression of VEGFR2 protein and decreased the expression levels of p-STAT3, p-MAPK and p-Akt proteins. This study provides a new idea for the study of the molecular mechanism of corneal neovascularization. The purpose of our study was to determine whether rhamnazin inhibits corneal neovascularization in the rat alkali burn model, and alleviates the inflammatory response of the cornea.![]()
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Affiliation(s)
- Yao Yu
- Department of Ophthalmology
- The First Affiliated Hospital of Nanchang University
- Jiangxi Province Clinical Ophthalmology Institute
- Nanchang 330006
- China
| | - Xue-Zhi Zhou
- Department of Ophthalmology
- Xiangya Hospital
- Central South University
- Changsha 410078
- China
| | - Lei Ye
- Department of Ophthalmology
- The First Affiliated Hospital of Nanchang University
- Jiangxi Province Clinical Ophthalmology Institute
- Nanchang 330006
- China
| | - Qing Yuan
- Department of Ophthalmology
- The First Affiliated Hospital of Nanchang University
- Jiangxi Province Clinical Ophthalmology Institute
- Nanchang 330006
- China
| | | | - Ce Shi
- School of Ophthalmology and Optometry
- Wenzhou Medical University
- Wenzhou
- China
| | - Pei-Wen Zhu
- Department of Ophthalmology
- The First Affiliated Hospital of Nanchang University
- Jiangxi Province Clinical Ophthalmology Institute
- Nanchang 330006
- China
| | - Jing Bao
- Department of Ophthalmology
- The First Affiliated Hospital of Nanchang University
- Jiangxi Province Clinical Ophthalmology Institute
- Nanchang 330006
- China
| | - Nan Jiang
- Department of Ophthalmology
- The First Affiliated Hospital of Nanchang University
- Jiangxi Province Clinical Ophthalmology Institute
- Nanchang 330006
- China
| | - Yi Shao
- Department of Ophthalmology
- The First Affiliated Hospital of Nanchang University
- Jiangxi Province Clinical Ophthalmology Institute
- Nanchang 330006
- China
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Mohammed A, Gbonjubola VA, Koorbanally NA, Islam MS. Inhibition of key enzymes linked to type 2 diabetes by compounds isolated from Aframomum melegueta fruit. PHARMACEUTICAL BIOLOGY 2017; 55:1010-1016. [PMID: 28176546 PMCID: PMC6130490 DOI: 10.1080/13880209.2017.1286358] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 01/17/2017] [Accepted: 01/20/2017] [Indexed: 05/28/2023]
Abstract
CONTEXT The use of Aframomum melegueta K. Schum. (Zingiberaceae) fruit for treatment of diabetes has recently been established in Nigeria. However, compounds responsible for the antidiabetic action have not been identified. OBJECTIVE The present study carried out the bioassay-guided isolation of possible bioactive compounds responsible for the antidiabetic action of A. melegueta fruit. MATERIALS AND METHODS The A. melegueta fruit was sequentially extracted using ethyl acetate (EtOAc), ethanol and water, and the most active extract (EtOAc) was subjected to column chromatography on a silica gel column using solvent gradient systems of hexane (HEX):EtOAc and EtOAc:MeOH and the isolation of compounds was guided by α-glycosidase and α-amylase inhibitory activities at various concentrations (30-240 μg/mL). RESULTS According to the results, 3 arylalkanes, 6-paradol (1), 6-shogaol (2) and 6-gingerol (3) and a pentacyclic triterpene, oleanolic acid (4) were isolated from A. melegueta fruit. All the compounds exhibited inhibitory effects against α-amylase and α-glucosidase. 6-Gingerol (3) and oleanolic acid (4) showed higher inhibitory activity against α-amylase (IC50: 6-gingerol: 81.78 ± 7.79 μM; oleanolic acid: 91.72 ± 1.63 μM) and α-glucosidase (IC50: 6-gingerol: 21.55 ± 0.45 μM; oleanolic acid: 17.35 ± 0.88 μM) compared to the standard drug, acarbose and other isolated compounds. The kinetics of the enzyme action of the compounds showed a noncompetitive mode of inhibition. CONCLUSION The data of this study suggest that the 6-gingerol (3) and oleanolic acid (4) showed higher α-amylase and α-glucosidase inhibitory action and therefore could be responsible for the antidiabetic activity of A. melegueta fruit.
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Affiliation(s)
- Aminu Mohammed
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
- Department of Biochemistry, Faculty of Science, Ahmadu Bello University, Zaria, Nigeria
| | | | - Neil Anthony Koorbanally
- Department of Chemistry, School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
| | - Md. Shahidul Islam
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
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Olatunji OJ, Chen H, Zhou Y. Effect of the Polyphenol Rich Ethyl Acetate Fraction from the Leaves ofLycium chinenseMill. on Oxidative Stress, Dyslipidemia, and Diabetes Mellitus in Streptozotocin-Nicotinamide Induced Diabetic Rats. Chem Biodivers 2017; 14. [DOI: 10.1002/cbdv.201700277] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 07/03/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Opeyemi J. Olatunji
- Faculty of Traditional Thai Medicine; Prince of Songkla University; Hat Yai Songkhla 90112 Thailand
- Institute of Botany; Jiangsu Province and Chinese Academy of Sciences; Nanjing Botanical Garden, Mem Sun Yat-Sen, No 1 Qianhuhoucun, P.O. Box 1435 Nanjing 210014 P. R. China
| | - Hongxia Chen
- School of Pharmacy; Jiangsu University; Zhenjiang 202013 P. R. China
| | - Yifeng Zhou
- Institute of Botany; Jiangsu Province and Chinese Academy of Sciences; Nanjing Botanical Garden, Mem Sun Yat-Sen, No 1 Qianhuhoucun, P.O. Box 1435 Nanjing 210014 P. R. China
- Dongtai Institute of Tidal Flat; Nanjing Branch of Chinese Academy of Sciences; Dongtai 224200 P. R. China
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Paudel YN, Ali MR, Shah S, Adil M, Akhtar MS, Wadhwa R, Bawa S, Sharma M. 2-[(4-Chlorobenzyl) amino]-4-methyl-1,3-thiazole-5-carboxylic acid exhibits antidiabetic potential and raises insulin sensitivity via amelioration of oxidative enzymes and inflammatory cytokines in streptozotocin˗induced diabetic rats. Biomed Pharmacother 2017; 89:651-659. [DOI: 10.1016/j.biopha.2017.02.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/31/2017] [Accepted: 02/14/2017] [Indexed: 02/06/2023] Open
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