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Zhang Z, Wang S, Liu Q, Cao G, Liu Y. Extraction, purification, structural characteristics, and pharmacological activities of the polysaccharides from corn silk: A review. Int J Biol Macromol 2024; 274:133433. [PMID: 38936581 DOI: 10.1016/j.ijbiomac.2024.133433] [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: 12/26/2023] [Revised: 06/17/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Corn silk is widely used as a traditional Chinese medicine possessing multiple beneficial effects, whose active ingredient is corn silk polysaccharide (CSP). CSP is abundant in corn silk, and has a variety of bioactivities, such as antioxidant, hypoglycemic, hypolipidemic, hepatorenal-protective, antitumor, anti-fatigue, immunomodulating, and anti-ischemia-reperfusion injury effects. Moreover, CSP ameliorates diabetes, diabetes nephropathy, and hyperlipidemia. This review aimed to comprehensively and systematically summarize recent information on the extraction, purification, structural characterization, biological activity, potential mechanism, and toxicity of CSP. Thus, it could provide a reference for the further use of CSP and discuss the future prospects of CSP research and development.
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Affiliation(s)
- Zhiyuan Zhang
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Shuai Wang
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Qian Liu
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Guiyun Cao
- Shandong Hongjitang Pharmaceutical Group Company, Ltd, Jinan 250109, China
| | - Yuhong Liu
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
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Zhou T, Wu X, Liu S, Wang A, Liu Y, Zhou W, Sun K, Li S, Zhou J, Li B, Jiang J. Biomass-Derived Catalytically Active Carbon Materials for the Air Electrode of Zn-Air Batteries. CHEMSUSCHEM 2024; 17:e202301779. [PMID: 38416074 DOI: 10.1002/cssc.202301779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/17/2024] [Accepted: 02/28/2024] [Indexed: 02/29/2024]
Abstract
Given the growing environmental and energy problems, developing clean, renewable electrochemical energy storage devices is of great interest. Zn-air batteries (ZABs) have broad prospects in energy storage because of their high specific capacity and environmental friendliness. The unavailability of cheap air electrode materials and effective and stable oxygen electrocatalysts to catalyze air electrodes are main barriers to large-scale implementation of ZABs. Due to the abundant biomass resources, self-doped heteroatoms, and unique pore structure, biomass-derived catalytically active carbon materials (CACs) have great potential to prepare carbon-based catalysts and porous electrodes with excellent performance for ZABs. This paper reviews the research progress of biomass-derived CACs applied to ZABs air electrodes. Specifically, the principle of ZABs and the source and preparation method of biomass-derived CACs are introduced. To prepare efficient biomass-based oxygen electrocatalysts, heteroatom doping and metal modification were introduced to improve the efficiency and stability of carbon materials. Finally, the effects of electron transfer number and H2O2 yield in ORR on the performance of ZABs were evaluated. This review aims to deepen the understanding of the advantages and challenges of biomass-derived CACs in the air electrodes of ZABs, promote more comprehensive research on biomass resources, and accelerate the commercial application of ZABs.
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Affiliation(s)
- Ting Zhou
- College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Xianli Wu
- College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Shuling Liu
- College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Ao Wang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, 16 Suojinwucun, Nanjing, 210042, P. R. China
| | - Yanyan Liu
- College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- College of Science, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China
| | - Wenshu Zhou
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, 16 Suojinwucun, Nanjing, 210042, P. R. China
| | - Kang Sun
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, 16 Suojinwucun, Nanjing, 210042, P. R. China
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Shuqi Li
- College of Science, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China
| | - Jingjing Zhou
- College of Science, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China
| | - Baojun Li
- College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Jianchun Jiang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, 16 Suojinwucun, Nanjing, 210042, P. R. China
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Thompson MEH, Raizada MN. The Microbiome of Fertilization-Stage Maize Silks (Style) Encodes Genes and Expresses Traits That Potentially Promote Survival in Pollen/Style Niches and Host Reproduction. Microorganisms 2024; 12:1473. [PMID: 39065240 PMCID: PMC11278993 DOI: 10.3390/microorganisms12071473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/16/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Within flowers, the style channel receives pollen and transmits male gametes inside elongating pollen tubes to ovules. The styles of maize/corn are called silks. Fertilization-stage silks possess complex microbiomes, which may partially derive from pollen. These microbiomes lack functional analysis. We hypothesize that fertilization-stage silk microbiomes promote host fertilization to ensure their own vertical transmission. We further hypothesize that these microbes encode traits to survive stresses within the silk (water/nitrogen limitation) and pollen (dehydration/aluminum) habitats. Here, bacteria cultured from fertilization-stage silks of 14 North American maize genotypes underwent genome mining and functional testing, which revealed osmoprotection, nitrogen-fixation, and aluminum-tolerance traits. Bacteria contained auxin biosynthesis genes, and testing confirmed indole compound secretion, which is relevant, since pollen delivers auxin to silks to stimulate egg cell maturation. Some isolates encoded biosynthetic/transport compounds known to regulate pollen tube guidance/growth. The isolates encoded ACC deaminase, which degrades the precursor for ethylene that otherwise accelerates silk senescence. The findings suggest that members of the microbiome of fertilization-stage silks encode adaptations to survive the stress conditions of silk/pollen and have the potential to express signaling compounds known to impact reproduction. Overall, whereas these microbial traits have traditionally been assumed to primarily promote vegetative plant growth, this study proposes they may also play selfish roles during host reproduction.
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Affiliation(s)
| | - Manish N. Raizada
- Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada;
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Yang X, Wang Y, Li J, Tai Y, Yang K, Lv J, Sun J, Zhang H. From waste to wonder: exploring the hypoglycemic and anti-oxidant properties of corn processing by-products. Front Chem 2024; 12:1433501. [PMID: 39104778 PMCID: PMC11299435 DOI: 10.3389/fchem.2024.1433501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 06/28/2024] [Indexed: 08/07/2024] Open
Abstract
Introduction: The industrial processing of corn (Zeamays L.) generates by-products such as corn silk, straw peels, and straw core, which contribute to adverse environmental impacts. Our study aimed to investigate sustainable approaches for mitigating these effects by evaluating the hypoglycemic potential and mechanisms of ethyl acetate fractions derived from these corn derivatives. Methods: We employed glucose consumption assays, high glucose stress tests, UPLC-QE-Orbitrap-MS analysis, molecular docking, and simulations to assess their components and efficacy. Antioxidant capacities were evaluated using DPPH, FRAP, ABTS, and •OH scavenging assays. Results: Notably, the ethyl acetate fraction extracted from straw peels (SPE) exhibited a high concentration of flavonoids and phenolic compounds along with pronounced hypoglycemic activity and antioxidant capacity. SPE significantly enhanced glucose consumption in insulin-resistant HepG2 cells while protecting HUVECs against damage caused by high glucose levels. Molecular docking analyses confirmed the interaction between active compounds and α-glucosidase as well as α-amylase, while molecular dynamic simulations indicated stability at their binding sites. Discussion: In conclusion, the hypoglycemic and antioxidative properties observed in corn by-products such as straw peels, corn silk, and straw core can be attributed to the inhibition of α-glucosidase and α-amylase activities, coupled with their rich phenolic and flavonoid content. These findings highlight the potential of these by-products for applications in healthcare management and their sustainable utilization, demonstrating significant value in the use of agricultural residues.
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Affiliation(s)
- Xiaoqian Yang
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Yuelong Wang
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Jingfeng Li
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Yuxing Tai
- Department of Acupuncture and Tuina, Changchun University of Chinese Medicine, Changchun, China
| | - Kunping Yang
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Jingwei Lv
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Jiaming Sun
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Hui Zhang
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
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Wang X, Cao L, Tang J, Deng J, Hao E, Bai G, Tang PL, Yang J, Li H, Yao L, He C, Hou X. Research on the Mechanism and Material Basis of Corn ( Zea mays L.) Waste Regulating Dyslipidemia. Pharmaceuticals (Basel) 2024; 17:868. [PMID: 39065719 PMCID: PMC11279488 DOI: 10.3390/ph17070868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/13/2024] [Accepted: 06/21/2024] [Indexed: 07/28/2024] Open
Abstract
Corn (Zea mays L.) is an essential gramineous food crop. Traditionally, corn wastes have primarily been used in feed, harmless processing, and industrial applications. Except for corn silk, these wastes have had limited medicinal uses. However, in recent years, scholars have increasingly studied the medicinal value of corn wastes, including corn silk, bracts, husks, stalks, leaves, and cobs. Hyperlipidemia, characterized by abnormal lipid and/or lipoprotein levels in the blood, is the most common form of dyslipidemia today. It is a significant risk factor for atherosclerosis and can lead to cardiovascular and cerebrovascular diseases if severe. According to the authors' literature survey, corn wastes play a promising role in regulating glucose and lipid metabolism. This article reviews the mechanisms and material basis of six different corn wastes in regulating dyslipidemia, aiming to provide a foundation for the research and development of these substances.
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Affiliation(s)
- Xiaodong Wang
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Lewei Cao
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Jiajun Tang
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Jiagang Deng
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning 530011, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Erwei Hao
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning 530011, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Gang Bai
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, China
| | - Pei Ling Tang
- Department of Bioscience, Faculty of Applied Sciences, Tunku Abdul Rahman University of Management and Technology, Kuala Lumpur 50250, Malaysia
| | - Jieyi Yang
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning 530011, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Huaying Li
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Lihao Yao
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Cuiwei He
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530011, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Xiaotao Hou
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530011, China; (X.W.)
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530011, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning 530011, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning 530011, China
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Jebir RM, Mustafa YF. Kidney stones: natural remedies and lifestyle modifications to alleviate their burden. Int Urol Nephrol 2024; 56:1025-1033. [PMID: 37644348 DOI: 10.1007/s11255-023-03764-1] [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: 06/28/2023] [Accepted: 08/22/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND Kidney stones (KSs), in fact, have been considered one of the most ancient and prevalent medical conditions that impact a significant number of human beings all around the world. Such stones can range greatly in size and can be detected in any part of the urinary system, including the kidneys, ureters, or bladder itself. The development of stones is caused by the mineral's crystallization, which then interacts with each other and adheres together. Kidney stone formation can represent a prime medical condition for which there are numerous therapies available, among them natural ones. Recurrence of stones after curing is very common, and strategies available to prevent their reoccurrence or even their development for the first time are numerous, with enhanced fluid consumption or avoiding dehydration being the most important one. OBJECTIVE The current review article aims to draw attention to the potential of natural remedies besides lifestyle modification in the management and prevention of KSs. This is not arbitrary but based on real, documented scientific evidence. METHOD The natural remedies mentioned in the context of this manuscript were chosen for their availability in almost all nations, or perhaps even in every home. RESULTS The findings of the present article are very promising and exhibit the potential benefit of natural remedies in addition to shifting to a healthy lifestyle in both the treatment and prevention of KSs.
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Affiliation(s)
- Rahma Mowaffaq Jebir
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, Iraq
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, Iraq.
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Wang Y, Mao J, Zhang M, Liu L, Zhu Y, Gu M, Zhang J, Bu H, Sun Y, Sun J, Ma Y, Guo L, Zheng Y, Liu Q. An Umbrella Insight into the Phytochemistry Features and Biological Activities of Corn Silk: A Narrative Review. Molecules 2024; 29:891. [PMID: 38398644 PMCID: PMC10891732 DOI: 10.3390/molecules29040891] [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: 12/22/2023] [Revised: 02/03/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Corn silk (Zea mays L.) is the stigma of an annual gramineous plant named corn, which is distributed in many regions worldwide and has a long history of medicinal use. In recent years, with the sustainable development of traditional Chinese medicine, studies of corn silk based on modern technologies, such as GC-MS, LC-MS, and other analytical means, have offered more comprehensive analyses. Phytochemistry studies have shown that the main bioactive components in corn silk include flavonoids, polyphenols, phenolic acids, fatty acids, and terpenoids. Pharmacological studies have shown that corn silk extract has various pharmacological effects, such as reducing blood lipids, lowering blood pressure, regulating blood sugar levels, anti-inflammatory effects, and anti-oxidation effects. In this paper, the related research on corn silk from the past few years is summarized to provide a theoretical reference for the further development and utilization of corn silk.
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Affiliation(s)
- Yumei Wang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
| | - Jialin Mao
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
- School of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China;
| | - Meng Zhang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
- School of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China;
| | - Lei Liu
- Graduate School, Qiqihar Medical University, Qiqihar 161006, China;
| | - Yu Zhu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
| | - Meiling Gu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
- School of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China;
| | - Jinling Zhang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
| | - Hongzhou Bu
- Chinese Medicine Detection Laboratory, Drugs Control Center of Qiqihar, Qiqihar 161006, China;
| | - Yu Sun
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
| | - Jia Sun
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
| | - Yukun Ma
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
| | - Lina Guo
- School of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China;
| | - Yan Zheng
- Office of Academic Research, Qiqihar Medical University, Qiqihar 161006, China;
| | - Qi Liu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (Y.W.); (J.M.); (M.Z.); (Y.Z.); (M.G.); (J.Z.); (Y.S.); (J.S.); (Y.M.)
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Hsiang CY, Lo HY, Lu GL, Liao PY, Ho TY. A novel heat-stable angiotensin-converting enzyme zinc-binding motif inhibitory peptide identified from corn silk. JOURNAL OF ETHNOPHARMACOLOGY 2024; 320:117435. [PMID: 37979812 DOI: 10.1016/j.jep.2023.117435] [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: 07/24/2023] [Revised: 11/02/2023] [Accepted: 11/13/2023] [Indexed: 11/20/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hypertension is the most common and chronic severe health problem globally. Corn silk (CS), the silky fibers of corn (Zea mays L.), has a long history of traditional usage as a remedy for edema and hypertension. AIM OF THE STUDY The aim of the study was to explore the underlying mechanism by which CS exerts its anti-hypertensive effects and investigate the presence of bioactive molecules in CS aqueous extract. MATERIALS AND METHODS We analyzed the effects of boiling water extract of CS on angiotensin-converting enzyme (ACE) activities, the critical enzyme involved in the regulation of blood pressure. ACE inhibitory peptides from CS extract were identified using proteomics and bioinformatics tools. The binding interfaces between these peptides and ACE were defined by hydrogen-deuterium exchange mass spectrometry (HDX-MS). Subsequently, the anti-hypertensive effects of peptides were further investigated in spontaneously hypertensive rats (SHR). RESULTS Our data showed that CS extract exhibited dose-dependent inhibition of ACE activity. Liquid chromatography-tandem mass spectrometry identified a heat-stable peptide bank with 1313 distinct peptide fragments within the CS boiling water extract. Among these, CS-1 (LVPGWTKPICIGR) was selected through PeptideRanker and BIOPEP-UWM analyses. In vitro ACE inhibitory assays confirmed that CS-1 exhibited dose-dependent ACE inhibition, with IC50 values of 10.32 ± 0.41 μmol/L (using HHL as the substrate) and 13.74 ± 1.87 μmol/L (using ZFHL as the substrate). Oral administration of CS-1 led to a significant dose-dependent reduction in blood pressure, with the maximal decrease (42.33 ± 13.08 mmHg) occurring 0.5 h after ingestion. HDX-MS analysis revealed that CS-1 interacted with the zinc-binding motif of ACE, and hydrogen bond interactions were predicted between CS-1 and specific residues, including His361 in the N-domain, as well as His382, Gly386, and His387 in the C-domain of ACE. These findings suggested that the interaction of CS-1 with the residues in the zinc-binding motif of ACE led to ACE activity inhibition and a subsequent decrease in blood pressure in rats. CONCLUSIONS A novel heat-stable ACE inhibitory peptide, which interacted with the zinc-binding motif of ACE and reduced blood pressure in SHR, was identified in the CS extract. The presence of ACE inhibitory peptides in the CS extract supports its traditional use in ethnopharmacology for hypertension.
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Affiliation(s)
- Chien-Yun Hsiang
- Department of Microbiology and Immunology, China Medical University, Taichung, 404333, Taiwan
| | - Hsin-Yi Lo
- Graduate Institute of Chinese Medicine, China Medical University, Taichung, 404333, Taiwan
| | - Guan-Ling Lu
- Department of Microbiology and Immunology, China Medical University, Taichung, 404333, Taiwan
| | - Pei-Yung Liao
- Graduate Institute of Chinese Medicine, China Medical University, Taichung, 404333, Taiwan; Division of Endocrinology and Metabolism, Department of Internal Medicine, Changhua Christian Hospital, Changhua, 500209, Taiwan
| | - Tin-Yun Ho
- Graduate Institute of Chinese Medicine, China Medical University, Taichung, 404333, Taiwan; Department of Health and Nutrition Biotechnology, Asia University, Taichung, 413305, Taiwan.
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Mohammadi A, Oroojan AA, Hashemi M, Poormoosavi SM, Dolatshahi M, Golshokouh F. Hypolipidemic and hepatoprotective effects of corn silk extract in nicotine-administered male mice. GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH 2024; 17:64-73. [PMID: 38737932 PMCID: PMC11080695 DOI: 10.22037/ghfbb.v17i1.2806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/12/2023] [Indexed: 05/14/2024]
Abstract
Aim This study is done to investigate the hypolipidemic and hepatoprotective effects of corn silk extract in nicotine-administered male mice. Background Nicotine can induce pathophysiological effects in the liver tissue through oxidative stress and damage cells. Corn silk can improve liver function with its antioxidant effects. Methods In this experimental study, 30 male NMRI mice (25-30 gr) were divided into 5 groups: controls, sham, nicotine 2.5 mg/kg, nicotine+aqueous extract of corn silk 400 mg/kg, and nicotine+methanolic extract of corn silk 400 mg/kg for 1 month. One day after the last nicotine and extracts consumption, the serum samples were performed for biochemical measurement, and the supernatant of the homogenized liver was administered for antioxidant variables assessment. Results There was no significant difference in the body weight of different groups. Liver weight and GSH decreased in the nicotine group compared to the control group (P<0.05). Triglycerides, total cholesterol, HDL-C, LDL-C, liver enzymes, and MDA increased in the nicotine group compared to the control group (P<0.05). Also, the expansion of sinusoids, the presence of inflammatory cells, and necrosis of liver cells were observed in the nicotine group compared to the control group. Using aqueous and methanolic extracts of corn silk in mice receiving nicotine led to the improvement of the mentioned variables (P<0.05). Conclusion The results of this study showed that the use of nicotine can lead to the induction of hepatotoxicity. The use of aqueous and methanolic extracts of corn silk improved them through its antioxidant activity.
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Affiliation(s)
- Anahita Mohammadi
- School of Medicine, Student Research Committee, Dezful University of Medical Sciences, Dezful, Iran
| | - Ali Akbar Oroojan
- Department of Physiology, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - Mehdi Hashemi
- Department of General Surgery, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - Seyedeh Mahsa Poormoosavi
- Department of Histology, School of Medicine, Research and Clinical Center for Infertility, Dezful University of Medical Sciences, Dezful, Iran
| | - Mojtaba Dolatshahi
- Department of Physiology, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - Fatemeh Golshokouh
- School of Medicine, Student Research Committee, Dezful University of Medical Sciences, Dezful, Iran
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10
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Akoonjee A, Lanrewaju AA, Balogun FO, Makunga NP, Sabiu S. Waste to Medicine: Evidence from Computational Studies on the Modulatory Role of Corn Silk on the Therapeutic Targets Implicated in Type 2 Diabetes Mellitus. BIOLOGY 2023; 12:1509. [PMID: 38132335 PMCID: PMC10740667 DOI: 10.3390/biology12121509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/02/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is characterized by insulin resistance and/or defective insulin production in the human body. Although the antidiabetic action of corn silk (CS) is well-established, the understanding of the mechanism of action (MoA) behind this potential is lacking. Hence, this study aimed to elucidate the MoA in different samples (raw and three extracts: aqueous, hydro-ethanolic, and ethanolic) as a therapeutic agent for the management of T2DM using metabolomic profiling and computational techniques. Ultra-performance liquid chromatography-mass spectrometry (UP-LCMS), in silico techniques, and density functional theory were used for compound identification and to predict the MoA. A total of 110 out of the 128 identified secondary metabolites passed the Lipinski's rule of five. The Kyoto Encyclopaedia of Genes and Genomes pathway enrichment analysis revealed the cAMP pathway as the hub signaling pathway, in which ADORA1, HCAR2, and GABBR1 were identified as the key target genes implicated in the pathway. Since gallicynoic acid (-48.74 kcal/mol), dodecanedioc acid (-34.53 kcal/mol), and tetradecanedioc acid (-36.80 kcal/mol) interacted well with ADORA1, HCAR2, and GABBR1, respectively, and are thermodynamically stable in their formed compatible complexes, according to the post-molecular dynamics simulation results, they are suggested as potential drug candidates for T2DM therapy via the maintenance of normal glucose homeostasis and pancreatic β-cell function.
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Affiliation(s)
- Ayesha Akoonjee
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban 4000, South Africa; (A.A.); (A.A.L.); (F.O.B.)
| | - Adedayo Ayodeji Lanrewaju
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban 4000, South Africa; (A.A.); (A.A.L.); (F.O.B.)
| | - Fatai Oladunni Balogun
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban 4000, South Africa; (A.A.); (A.A.L.); (F.O.B.)
| | - Nokwanda Pearl Makunga
- Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland, Stellenbosch 7602, South Africa;
| | - Saheed Sabiu
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban 4000, South Africa; (A.A.); (A.A.L.); (F.O.B.)
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11
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Tao TZ, Wang L, Liu J. Role of corn silk for the treatment of Alzheimer's disease: A mechanism research based on network pharmacology combined with molecular docking and experimental validation. Chem Biol Drug Des 2023; 102:1231-1247. [PMID: 37563784 DOI: 10.1111/cbdd.14315] [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: 04/12/2023] [Revised: 07/05/2023] [Accepted: 07/27/2023] [Indexed: 08/12/2023]
Abstract
This study aimed to research the possible mechanism and effect of active ingredients of corn silk on Alzheimer's disease (AD) by the method of network pharmacology, molecular docking, and animal experiments. The active ingredients of Corn silk were obtained by searching the TCMSP database and the targets corresponding to the active ingredients of Corn silk were obtained through the TCMSP and SwissTargetPrediction platforms, and the AD targets were obtained in the GeneCards, OMIM, and DisgeNET databases. Cytoscape was employed for creating the "active ingredient-target" relationship network; STRING and Cytoscape for creating the protein-protein interaction (PPI) network. Besides, Meta scape was used for Gene Ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis of the intersecting targets; AutoDockTools and Pymol for molecular docking and visualization of core ingredients and core targets; and animal experiments for verifying the anti-AD effect of luteolin. A total of 12 active ingredients of corn silk were screened, including 465 targets and 209 intersected targets. Moreover, GO functional analysis results showed that the anti-AD effect of corn silk was mainly reflected in phosphotransferase activity, response to hormone, membrane raft, etc.; KEGG results indicated the main pathways involving cancer, Alzheimer disease, etc.; and the molecular docking results revealed excellent binding of the core ingredients (α-tocopheryl quinone, luteolin, etc.) to the core targets. Besides, the outcomes of animal experiments exhibited that luteolin not only reduced the expression of inflammatory factors TNF-α and IL-1β in mice but also attenuated inflammation. With the help of network pharmacology and experimental validation, the material basis and mechanism of the anti-AD of corn silk have been explored in this study. Briefly speaking, luteolin from corn silk plays an anti-AD role by inhibiting inflammation.
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Affiliation(s)
- Tian-Ze Tao
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Lu Wang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Jie Liu
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
- National Engineering Research Center of Miao's Medicines, Guiyang, China
- Guizhou Chinese Medicine Processing and Preparation Engineering Technology Research Center, Guiyang, China
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12
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Gumaih HS, Alasbahy A, Alharethi SH, AL-Asmari SM, Al-Khulaidi AWA. Antiurolithiasis activities of Zea mays extract and its mechanism as antiurolithiasis remedy. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2023; 11:443-451. [PMID: 37941649 PMCID: PMC10628625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/23/2023] [Indexed: 11/10/2023]
Abstract
This study aimed to demonstrate the role of Zea mays or corn silk (CS) in the treatment of kidney stones after its proven effectiveness in folk medicine. Twenty-four rats were divided into four groups, the first represented the control group (negative control), and the second (positive control), was treated with 75% of ethylene glycol (EG) and 1% of ammonium chloride (AC) to induce stones in the kidneys of experimental animals. The animals of the third and fourth groups were treated with the same proportions of EG and AC, with the addition of extract of CS at a ratio of 200 and 400 mg/kg. After the 28th day, the blood samples were taken from rats. All kidneys of rats from all groups were taken to histological examination. Another ten rats were divided into two groups and took the same time as the original experiment. Group E took a normal diet and served as negative control group whereas the group F took a normal diet with 500 mg/kg of CS to investigate the mechanism of CS as antiurolithiatic treatment. Blood samples were collected on the last day of the experiment to perform the required analyses. The rats were dissected and liver and kidney samples were taken to complete the histological study. The results showed a significant decrease in the CS group in plasma MDA, serum urea, and creatinine. Moreover, the histological study, in the CS rats group appeared to be fewer CaOx crystals. On the other hand, we observed a significant increase in urinary pH, urine volume urinary Mg, and citrate in-group E when compared with the F group. In conclusion, we infer that CS works as an antiurolithiatic drug by increasing urinary pH, diuresis, and its nephroprotective vims. So, we advise its use as an antiurolithiasis treatment but in its pharmaceutical forms.
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Affiliation(s)
- Hussein S Gumaih
- Biology Department, Faculty of Science, Sana’a UniversitiesSana’a, Yemen
- College of Science and Arts, Najran UniversityNajran, Saudi Arabia
| | - Afrah Alasbahy
- Biology Department, Faculty of Medicine, Amran UniversityAmran, Yemen
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13
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Huong PTM, Hanh TTH, Hong Quang T, Cuong NX, Lee DS, Nam NH, Minh CV. Diterpenoid and phenolic constituents from corn silk ( Zea mays) with PTP1B inhibitory activity. Nat Prod Res 2023:1-8. [PMID: 37820035 DOI: 10.1080/14786419.2023.2265038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/24/2023] [Indexed: 10/13/2023]
Abstract
Chemical investigation of corn silk resulted in the isolation of nine secondary metabolites, including a new ent-kaurane diterpenoid, zeamaysditerpene A (1) and eight known compounds, stigmaydene A (2), stigmaydene J (3), stigmaydene L (4), stigmane D (5), demethyltorosaflavone D (6), chrysoeriol 6-C-β-boivinopyranosyl-7-O-β-D-glucopyranoside (7), deoxypodophyllotoxin (8), and α-peltatin glucoside (9). Their structures were elucidated using a combination of spectroscopic methods, including 1D and 2D NMR and HRESIQTOF mass spectra. The absolute configuration of 1 was deduced by applying electronic circular dichroism (ECD) calculation method. Among the isolates, only 6 displayed significant inhibition against PTP1B activity in a dose-dependent manner, with an IC50 value of 10.7 ± 0.1 µM. Furthermore, molecular docking simulation was carried out to explore the action perspective of 6 inside the enzyme PTP1B. This finding suggests that 6 might be a potential lead for the development of a new anti-diabetic agent.
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Affiliation(s)
- Pham Thi Mai Huong
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Tran Thi Hong Hanh
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Tran Hong Quang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Nguyen Xuan Cuong
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Dong-Sung Lee
- College of Pharmacy, Chosun University, Gwangju, Republic of Korea
| | - Nguyen Hoai Nam
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Chau Van Minh
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
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14
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Zheng G, Chen Q, Zhou F, Li P. Retention properties and mechanism of agricultural waste maize whisker on atmospheric mercury. BIORESOUR BIOPROCESS 2023; 10:67. [PMID: 38647626 PMCID: PMC10991902 DOI: 10.1186/s40643-023-00683-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 08/29/2023] [Indexed: 04/25/2024] Open
Abstract
Mercury (Hg) is a global pollutant transmitted mainly through the atmosphere, posing a serious threat to biological survival and human health. Porous materials, with high specific surface area, high porosity, and high adsorption, are particularly suitable for the purification of atmospheric Hg mixtures. However, plant porous materials are rarely directly used for atmospheric Hg purification. In this study, the properties and mechanism of maize whisker in removing atmospheric Hg were analyzed. The results show that the Hg content in the whiskers increases significantly as the initial Hg concentration increases, and 79.38% Hg can be removed by 0.2 g maize whiskers after 1 h exposure when the initial Hg concentration is 0.1 μg m-3, indicating that maize whiskers can accumulate atmospheric Hg rapidly and effectively. The hole diameter of the maize whisker is between 0.83 and 3.06 μm, which is suitable for the adsorption of small substances. Correlation analysis shows that maize whiskers have a significant correlation between atmospheric Hg retention and its specific surface area, pore size, medium pore ratio, and micropore ratio, suggesting that the maize whisker hole feature has a significant influence on its ability to retain atmospheric Hg. Compared with the energy profiles before and after Hg treatment, the peak of Mg decreased after Hg adsorption. Fourier infrared spectrometer analysis suggests that functional groups such as -OH, -COOH, and -O- are involved in the adsorption process. The change in pH value shows an obvious effect on the overall change in zeta potential in the adsorption process. Therefore, a variety of mechanisms, including physical adsorption, electrostatic adsorption, complexation, chelation, and ion exchange, are involved in Hg retention with the maize whisker. This study reveals the important potential value of agricultural waste maize whiskers in the purification of atmospheric heavy metal Hg.
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Affiliation(s)
- Guiling Zheng
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Qianxiu Chen
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Feng Zhou
- School of Food Science, Nanjing Xiaozhuang University, Nanjing, 211171, Jiangsu, China.
| | - Peng Li
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, 266109, Shandong, China.
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15
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Yucharoen R, Srisuksomwong P, Julsrigival J, Mungmai L, Kaewkod T, Tragoolpua Y. Antioxidant, Anti-Tyrosinase, and Anti-Skin Pathogenic Bacterial Activities and Phytochemical Compositions of Corn Silk Extracts, and Stability of Corn Silk Facial Cream Product. Antibiotics (Basel) 2023; 12:1443. [PMID: 37760739 PMCID: PMC10525379 DOI: 10.3390/antibiotics12091443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/08/2023] [Accepted: 09/10/2023] [Indexed: 09/29/2023] Open
Abstract
Zea mays L. Poaceae stigma (corn silk, CS) is a byproduct of agricultural waste and is used as a traditional herb in many countries. CS is rich in chemical compounds known to benefit human health and is also a remedy for infectious diseases and has anti-proliferative effects on human cancer cell lines. In the present study, CS extract has been evaluated for its antioxidant, antibacterial, and anti-tyrosinase activities and its phytochemical composition. The higher total phenolic and flavonoid contents were found in the ethanolic extract of corn silk (CSA), at 28.27 ± 0.86 mg gallic acid equivalent/g extract and 4.71 ± 0.79 mg quercetin equivalent/g extract, respectively. Moreover, the antioxidant content of CSA was found at 5.22 ± 0.87 and 13.20 ± 0.42 mg gallic acid equivalent/g extract using DPPH and reducing power assays. Furthermore, the ethanolic extract of corn silk showed tyrosinase inhibition with an IC50 value of 12.45 µg/mL. The bacterial growth inhibition of CSA was tested using agar disc diffusion and broth dilution assays against Cutibacterium acnes and Staphylococcus epidermidis. It was found that CSA inhibited C. acnes and S. epidermidis with an inhibition zone of 11.7 ± 1.2 and 9.3 ± 0.6 mm, respectively. Moreover, the CSA showed MIC/MBC of 15.625 mg/mL against C. acnes. The following phytochemical compounds were detected in CSA: cardiac glycosides; n-hexadecanoic acid; hexadecanoic acid, ethyl ester; oleic acid; and 9,12-octadecadienoic acid, ethyl ester. After the corn silk cream product was formulated, the product demonstrated stability without phase separation. This research is beneficial for promoting effective ways to use agricultural waste while utilizing the antioxidant, anti-tyrosinase, and antibacterial activities of corn silk. Moreover, the use of technology and innovation to obtain high-value CS extract will benefit the development of commercial cosmetic products by providing safe, natural, and quality ingredients to the consumer.
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Affiliation(s)
- Raenu Yucharoen
- Division of Biology and Biotechnology, Faculty of Science and Technology, Nakhon Sawan Rajabhat University, Nakhon Sawan 60000, Thailand;
| | - Pawalee Srisuksomwong
- Division of Science and Mathematics, Faculty of Science and Technology, Phuket Rajabhat University, Phuket 83000, Thailand;
| | - Jakaphun Julsrigival
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Lapatrada Mungmai
- Division of Cosmetic Science, School of Pharmaceutical Sciences, University of Phayao, Phayao 56000, Thailand;
| | - Thida Kaewkod
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Yingmanee Tragoolpua
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
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16
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Singh J, Rasane P, Nanda V, Kaur S. Bioactive compounds of corn silk and their role in management of glycaemic response. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:1695-1710. [PMID: 37187994 PMCID: PMC10169954 DOI: 10.1007/s13197-022-05442-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 05/17/2023]
Abstract
Management of glycaemic response is perhaps the most critical part of antidiabetic therapy. Hypoglycaemia is an avoidable complication caused by conventional drugs used in the treatment of diabetes. It triggers commonly during the intensification of anti-hyperglycemic therapy used to render glycemic control in diabetic patients. The commercial oral hypoglycaemic drugs, insulin, herbal medicines and plant extracts are therefore used as a part of the treatment of diabetes. The demand for treating diabetes, through herbal and plant resources is due to their lesser adverse reactions and better phytochemical benefits. Corn silk has been shown to have anti-allergic, anti-inflammatory, and anti-hypertensive effects when extracted in various solvents. Corn silk has medicinal characteristics and has long been used as a traditional medicine in many nations, although the mechanism of action is unknown. The hypoglycaemic effects of corn silk are investigated in this review. The phytochemical components present in corn silk-like flavonoids, phenolics, terpenoids, tannins, sterols, and alkaloids are phytochemical components that have hypoglycemic activity and a mechanism for lowering blood glucose levels. There is a lack of a homogenized database on the hypoglycemic properties of corn silk thus the present review attempts to critically analyse it and provide specific recommendations of its doses.
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Affiliation(s)
- Jyoti Singh
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab 144411 India
| | - Prasad Rasane
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab 144411 India
| | - Vikas Nanda
- Sant Longowal Institute of Engineering and Technology, Sangrur, Punjab 148106 India
| | - Sawinder Kaur
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab 144411 India
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17
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Kovincic A, Markovic K, Ristic D, Babic V, Petrovic T, Zivanovic T, Kravic N. Efficiency of Biological Typing Methods in Maize Hybrid Genetic Purity Estimation. Genes (Basel) 2023; 14:1195. [PMID: 37372375 DOI: 10.3390/genes14061195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
A high level of genetic purity in crop varieties must be achieved and maintained for agronomic performance, encouraging investment and innovation in plant breeding and ensuring that the improvements in productivity and quality imparted by breeders are delivered to the consumer. Since the success of hybrid seed production is dependent upon the genetic purity of the parental lines, in this study, the experimental F1exp maize hybrid and its parental inbreeds were used as a model system to examine the discriminative power of morphological, biochemical and SSR markers for seed purity assay. The highest number of off-type plants was estimated by morphological markers. According to the comparison of prolamins and albumins banding patterns of parental and derived F1exp seeds, genetic impurities could not be detected. Molecular analysis detected two types of genetic profile irregularity. Beside its use for verifying varieties of maize, report on umc1545 primer pair ability to detect non-specific bands (i.e., off-types), in both the maternal component and F1exp, which is the first report on this issue yet, strongly supports the recommendation of this SSR marker use for more accurate and time-efficient maize hybrids and parental lines genetic pyrity testing.
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Affiliation(s)
- Anika Kovincic
- Maize Research Institute Zemun Polje, Slobodana Bajica 1, 11185 Belgrade, Serbia
| | - Ksenija Markovic
- Maize Research Institute Zemun Polje, Slobodana Bajica 1, 11185 Belgrade, Serbia
| | - Danijela Ristic
- Maize Research Institute Zemun Polje, Slobodana Bajica 1, 11185 Belgrade, Serbia
| | - Vojka Babic
- Maize Research Institute Zemun Polje, Slobodana Bajica 1, 11185 Belgrade, Serbia
| | - Tanja Petrovic
- Maize Research Institute Zemun Polje, Slobodana Bajica 1, 11185 Belgrade, Serbia
| | - Tomislav Zivanovic
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade, Serbia
| | - Natalija Kravic
- Maize Research Institute Zemun Polje, Slobodana Bajica 1, 11185 Belgrade, Serbia
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18
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Lapčík L, Řepka D, Lapčíková B, Sumczynski D, Gautam S, Li P, Valenta T. A Physicochemical Study of the Antioxidant Activity of Corn Silk Extracts. Foods 2023; 12:foods12112159. [PMID: 37297404 DOI: 10.3390/foods12112159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/22/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
Corn silk (CS) extracts are reported to contain flavonoids (appx. 59.65 mg quercetin/g), polysaccharides (appx. 58.75 w.%), steroids (appx. 38.3 × 10-3 to 368.9 × 10-3 mg/mL), polyphenols (appx. 77.89 mg/GAE/g) and other functional biological substances. This study investigated the antioxidant activity of corn silk extracts related to their functional compounds. The radical scavenging effect of corn silk extracts was evaluated by the spin-trapping electron paramagnetic resonance (EPR) technique, 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzo-thiazoline-6-sulfonate) (ABTS•+) free radical measurement, ferric ion-reducing antioxidant power, and copper ion reductive capacity. It was found that the maturity stage of CS plant materials and the applied extraction procedure of their bioactive compounds have a profound effect on the radical scavenging capacity. Differences in the antioxidant activity of the studied corn silk samples based on their maturity were also confirmed. The strongest DPPH radical scavenging effect was observed for the corn silk mature stage (CS-M)stage (CS-MS) (65.20 ± 0.90)%, followed by the silky stage (CS-S) (59.33 ± 0.61)% and the milky stage (CS-M) (59.20 ± 0.92)%, respectively. In general, the final maturity stage (CS-MS) provided the most potent antioxidant effect, followed by the earliest maturity stage (CS-S) and the second maturity stage (CS-M).
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Affiliation(s)
- Lubomír Lapčík
- Department of Foodstuff Technology, Faculty of Technology, Tomas Bata University in Zlin, Nam. T.G. Masaryka 275, CZ-762 72 Zlin, Czech Republic
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, CZ-771 46 Olomouc, Czech Republic
| | - David Řepka
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, CZ-771 46 Olomouc, Czech Republic
| | - Barbora Lapčíková
- Department of Foodstuff Technology, Faculty of Technology, Tomas Bata University in Zlin, Nam. T.G. Masaryka 275, CZ-762 72 Zlin, Czech Republic
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, CZ-771 46 Olomouc, Czech Republic
| | - Daniela Sumczynski
- Department of Foodstuff Technology, Faculty of Technology, Tomas Bata University in Zlin, Nam. T.G. Masaryka 275, CZ-762 72 Zlin, Czech Republic
| | - Shweta Gautam
- Department of Foodstuff Technology, Faculty of Technology, Tomas Bata University in Zlin, Nam. T.G. Masaryka 275, CZ-762 72 Zlin, Czech Republic
| | - Peng Li
- Department of Foodstuff Technology, Faculty of Technology, Tomas Bata University in Zlin, Nam. T.G. Masaryka 275, CZ-762 72 Zlin, Czech Republic
| | - Tomáš Valenta
- Department of Foodstuff Technology, Faculty of Technology, Tomas Bata University in Zlin, Nam. T.G. Masaryka 275, CZ-762 72 Zlin, Czech Republic
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19
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Zhang Y, Liu J, Guan L, Fan D, Xia F, Wang A, Bao Y, Xu Y. By-Products of Zea mays L.: A Promising Source of Medicinal Properties with Phytochemistry and Pharmacological Activities: A Comprehensive Review. Chem Biodivers 2023; 20:e202200940. [PMID: 36721262 DOI: 10.1002/cbdv.202200940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/02/2023]
Abstract
Zea mays (Z. mays) is one of the main cereal crops in the world, and it's by-products have exhibited medicinal properties to explore. This article intends to review the chemical compositions and pharmacological activities of by-products of Z. mays (corn silks, roots, bract, stems, bran, and leaves) which support the therapeutic potential in the treatment of different diseases, with emphasis on the natural occurring compounds and detailed pharmacological developments. Based on this review, 231 natural compounds are presented. Among them, flavonoids, terpenes, phenylpropanoids, and alkaloids are the most frequently reported. The by-products of Z. mays possess diuretic effects, hepatoprotective, anti-diabetic, antioxidant, neuroprotective, anti-inflammatory, anti-cancer, plant protection activity, and other activities. This article reviewed the phytochemistry and pharmacological activities of Z. mays for comprehensive quality control and the safety and effectiveness to enhance future application.
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Affiliation(s)
- Yunqiang Zhang
- School of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, 110016, China
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Jianyu Liu
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
| | - Lu Guan
- School of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, 110016, China
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Dongxue Fan
- School of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, 110016, China
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Feiruo Xia
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Andong Wang
- School of Pharmacy, Nantong University, Nantong, Jiangsu 226001, P. R. China
| | - Ying Bao
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
| | - Yongnan Xu
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
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20
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Zhang Y, Yao L, Liu Y, Chen B, Wang C, Gong K, Wang F, Qiao Y. Acidic polysaccharide from corn silk: Structural & conformational properties and hepatoprotective activity. Int J Biol Macromol 2023; 236:123851. [PMID: 36863670 DOI: 10.1016/j.ijbiomac.2023.123851] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/13/2023] [Accepted: 02/23/2023] [Indexed: 03/04/2023]
Abstract
This study aimed to investigate the structural characterization, conformational properties, and hepatoprotective activity of corn silk acidic polysaccharide (CSP-50E). CSP-50E with molecular weights of 1.93 × 105 g/mol was composed of Gal, Glc, Rha, Ara, Xyl, Man and uronic acid with a weight ratio of 12:25:1:2:2:5:21. Structural analysis with methylation indicated that CSP-50E mainly contained T-Manp, 4-substituted-D-Galp/GalpA, and 4-substituted-D-Glcp. CSP-50E presented random coils conformation in an aqueous solution based on the analysis of HPSEC. In vitro experiments showed that CSP-50E exhibited significant hepatoprotective effects, CSP-50E reduce IL-6, TNF-α content, and AST, ALT activity to protect ethanol-induced damage liver cells (HL-7702), while the polysaccharide functioned mainly through the caspase cascade and mediate the mitochondrial apoptosis pathway. In this study, we describe a novel acidic polysaccharide from corn silk with hepatoprotective activity that facilitates the development and utilization of corn silk resources.
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Affiliation(s)
- Yi Zhang
- Research Center for Agricultural Products Preservation and Processing, Crop Breeding & Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China
| | - Lianmou Yao
- Research Center for Agricultural Products Preservation and Processing, Crop Breeding & Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China
| | - Yanfang Liu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China
| | - Bingjie Chen
- Research Center for Agricultural Products Preservation and Processing, Crop Breeding & Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China
| | - Chunfang Wang
- Research Center for Agricultural Products Preservation and Processing, Crop Breeding & Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China
| | - Kuijie Gong
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Shandong 250100, PR China
| | - Feng Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Yongjin Qiao
- Research Center for Agricultural Products Preservation and Processing, Crop Breeding & Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China.
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Fougère L, Zubrzycki S, Elfakir C, Destandau E. Characterization of Corn Silk Extract Using HPLC/HRMS/MS Analyses and Bioinformatic Data Processing. PLANTS (BASEL, SWITZERLAND) 2023; 12:721. [PMID: 36840069 PMCID: PMC9968068 DOI: 10.3390/plants12040721] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/03/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
In addition to having different biological activities of interest, corn silks play a role in the defense of plants. While benzoxamines and flavonoids have already been identified as molecules of plant defense and growth mechanisms, knowledge on the phytochemical composition of corn silk is lacking. Such knowledge would make it possible to better select the most effective varieties to improve resistance or bioactive properties. In this article, an approach was implemented to map a corn silk extract in two complementary ways. The first one involved working with UHPLC/HRMS data and Kendrick and van Krevelen plots to highlight a homologous series of compounds, such as lipids from 17 to 23 carbons, monoglycosylated flavonoids from 21 to 24 carbons, diglycosylated flavonoids of 26 to 28 carbons and organic acids of 14 to 19 carbons. The second way was to analyze the sample in UHPLC/HRMS2 and to plot mass spectral similarity networks with the GNPS platform and Cytoscape software to refine identification. By combining the information obtained, we were able to propose an identification for 104 detected molecules, including 7 nitrogenous, 28 lipidic and 67 phenolic compounds, leading to the first detailed phytochemical analysis of corn silk extract.
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Dietary Corn Silk ( Stigma maydis) Extract Supplementation Modulate Production Performance, Immune Response and Redox Balance in Corticosterone-Induced Oxidative Stress Broilers. Animals (Basel) 2023; 13:ani13030441. [PMID: 36766330 PMCID: PMC9913160 DOI: 10.3390/ani13030441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/23/2023] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
Immunosuppression is a serious consequence of oxidative stress exposure that negatively affects the productivity and profitability of birds, as well as their well-being. Thus, the present investigation was designed to evaluate the potential of corn silk extract (CSE) supplementation to overcome the negative impacts of oxidative stress induced by corticosterone administration (CORT) in broiler chickens. A total of 280 one day old Cobb 500 male chicks were divided into four groups in 2 × 2 factorial arrangements. The experimental groups included CSE supplementation (0 or 500 mg/kg diet, from 20 to 35 days of age) and CORT administration (0 or 25 mg/kg diet, from 22 to 35 days of age) as independent factors. At the end of week five of age, production performance parameters were measured. The humoral and cell-mediated immune response parameters, redox status, and stress markers were determined. Data revealed deleterious effects of CORT administration on the broilers' body weight, body weight gain, and feed conversion ratio. Moreover, an exponential increase in stress marker levels, in addition to immunosuppression and redox imbalance, were associated with CORT administration. However, CSE supplementation, with its high total phenols content, partially alleviated the negative impacts of CORT administration, as shown by a significant improvement in immune response parameters and antioxidant activity, as well as a reduction in stress marker levels. Furthermore, CSE supplementation to non-stressed birds even significantly improved total antioxidant activity, total white blood cells (TWBCs) count, T-lymphocyte stimulating index, and wattle thickness. It can be concluded that, under stress conditions in commercial broiler farms, dietary CSE supplementation can strongly be recommended to modulate the negative impacts of stress. Therefore, CSE can be used as an effective immunomodulator and antioxidant agent to increase commercial broiler farm productivity and profitability.
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Kim RE, Mabunga DF, Kim HJ, Han SH, Kim HY, Shin CY, Kwon KJ. Novel Therapeutics for Treating Sleep Disorders: New Perspectives on Maydis stigma. Int J Mol Sci 2022; 23:ijms232314612. [PMID: 36498940 PMCID: PMC9740493 DOI: 10.3390/ijms232314612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/26/2022] [Accepted: 11/05/2022] [Indexed: 11/24/2022] Open
Abstract
Sleep is a restorative period that plays a crucial role in the physiological functioning of the body, including that of the immune system, memory processing, and cognition. Sleep disturbances can be caused by various physical, mental, and social problems. Recently, there has been growing interest in sleep. Maydis stigma (MS, corn silk) is a female maize flower that is traditionally used as a medicinal plant to treat many diseases, including hypertension, edema, and diabetes. It is also used as a functional food in tea and other supplements. β-Sitosterol (BS) is a phytosterol and a natural micronutrient in higher plants, and it has a similar structure to cholesterol. It is a major component of MS and has anti-inflammatory, antidepressive, and sedative effects. However, the potential effects of MS on sleep regulation remain unclear. Here, we investigated the effects of MS on sleep in mice. The effects of MS on sleep induction were determined using pentobarbital-induced sleep and caffeine-induced sleep disruption mouse models. MS extracts decreased sleep latency and increased sleep duration in both the pentobarbital-induced sleep induction and caffeine-induced sleep disruption models compared to the positive control, valerian root extract. The butanol fraction of MS extracts decreased sleep latency time and increased sleep duration. In addition, β-sitosterol enhances sleep latency and sleep duration. Both MS extract and β-sitosterol increased alpha activity in the EEG analysis. We measured the mRNA expression of melatonin receptors 1 and 2 (MT1/2) using qRT-PCR. The mRNA expression of melatonin receptors 1 and 2 was increased by MS extract and β-sitosterol treatment in rat primary cultured neurons and the brain. In addition, MS extract increased the expression of clock genes including per1/2, cry1/2, and Bmal1 in the brain. MS extract and β-sitosterol increased the phosphorylation of ERK1/2 and αCaMKII. Our results demonstrate for the first time that MS has a sleep-promoting effect via melatonin receptor expression, which may provide new scientific evidence for its use as a potential therapeutic agent for the treatment and prevention of sleep disturbance.
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Affiliation(s)
- Ryeong-Eun Kim
- Department of Neuroscience, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Darine Froy Mabunga
- Department of Neuroscience, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hee Jin Kim
- Department of Pharmacy, Uimyung Research Institute for Neuroscience, Sahmyook University, 815 Hwarangro, Nowon-gu, Seoul 01795, Republic of Korea
| | - Seol-Heui Han
- Department of Neurology, Konkuk Hospital Medical Center, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, Republic of Korea
| | - Hahn Young Kim
- Department of Neurology, Konkuk Hospital Medical Center, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, Republic of Korea
| | - Chan Young Shin
- Department of Pharmacology, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Kyoung Ja Kwon
- Department of Neuroscience, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
- Department of Neurology, Konkuk Hospital Medical Center, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, Republic of Korea
- Correspondence: ; Tel.: +82-2-454-5630; Fax: +82-2030-7899
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Kirrella AAK, El-Kassas S, El-Naggar K, Galosi L, Biagini L, Rossi G, Cerbo AD, Alagawany M, Kassab M, Wakeel RAA. Growing and laying performance of two different-plumage color Japanese quail varieties supplemented with corn silk in their diet. Poult Sci 2022; 102:102360. [PMID: 36512872 PMCID: PMC9761379 DOI: 10.1016/j.psj.2022.102360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022] Open
Abstract
The current study aimed to investigate the dietary supplementation effect of corn silk (CS) on performance and blood chemistry of brown and white-feathered quails during the grower and layer periods. Japanese quails of brown and white-feathered color (180 birds/variety at 2 wks old) were randomly allotted into three groups with 3 replicates each (n = 20 birds/replicate). Corn silk powder (CS) was supplemented to the basal diet at 0, 1, and 2% of the diet for each quail variety for 1-month growing period, then continued for another 6-wk laying period to assess the egg production and egg quality characteristics. CS supplementation at 1% and 2% for brown and white-feathered quails respectively improved their growth performance (body weight and weight gain), carcass yield, and intestinal villi length with increasing feed consumption but without changes in feed conversion ratio. In both quail varieties, CS addition had a hypolipidemic effect, confirmed by lowering serum triglyceride (TG), cholesterol (CHO), and low density lipoprotein (LDL) while increased high density lipoprotein (HDL) concentrations (P < 0.05) with a clear response observed in white quails than the brown ones. Besides, CS supplementation increased (P = 0.002) hen day egg production in brown feathered quails, while reducing it in the white-feathered quails compared with the CS-free diet. The increased egg production was not significantly (P > 0.05) correlated with lower content of TG and CHO, while significantly increased the antioxidant content in both quail varieties (P < 0.05). Moreover, CS dietary supplementation significantly enhanced (P = 0.003) the yolk color, especially in brown-feathered quail. In conclusion, CS can be safely supplemented to the Japanese quail diet (1% and 2% for brown-feathered and white-feathered quails respectively) to improve growth performance, and egg quality characteristics.
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Affiliation(s)
- Abeer A K Kirrella
- Poultry Physiology, Poultry production Department, Faculty of Agriculture, Kafrelsheikh University, Egypt
| | - Seham El-Kassas
- Animal, Poultry, and Fish Breeding and Production, Department of Animal Wealth Development, Faculty of Veterinary Medicine, Kafrelsheikh University, Egypt
| | - Karima El-Naggar
- Department of Nutrition and Veterinary Clinical Nutrition, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Livio Galosi
- School of Biosciences and Veterinary Medicine, University of Camerino, Italy.
| | - Lucia Biagini
- School of Biosciences and Veterinary Medicine, University of Camerino, Italy
| | - Giacomo Rossi
- School of Biosciences and Veterinary Medicine, University of Camerino, Italy
| | - Alessandro Di Cerbo
- School of Biosciences and Veterinary Medicine, University of Camerino, Italy
| | - Mahmoud Alagawany
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Mohamed Kassab
- Department of Cytology and Histology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Rasha A Al Wakeel
- Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Egypt
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Lignin, an active component in the corn silk water extract, inhibits glycation. Sci Rep 2022; 12:17764. [PMID: 36273014 PMCID: PMC9588019 DOI: 10.1038/s41598-022-21780-6] [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: 07/11/2022] [Accepted: 10/04/2022] [Indexed: 01/19/2023] Open
Abstract
The formation of advanced glycation end products is associated with aging and diabetic complications such as neuropathy, retinopathy, and nephropathy. Thus, the suppression of AGEs formation could prevent and/or treat their related disorders. Corn silk is used as a traditional medicine for the prevention of diabetic complications and treatment of edema in Japan and China. Previous studies revealed the anti-glycation activity of flavonoids in the methanolic extract of corn silk. The anti-glycation activity of the corn silk water extract was higher than that of the methanolic extract; however, the active components of the water extract remained unidentified. The purpose of this study is to make clear the components showing anti-glycation activity in the corn silk water extract and elucidated their structural characteristics. The evaluation of anti-glycation activity was carried out by enzyme-linked immunosorbent assay to detect glycated bovine serum albumin. Remarkable anti-glycation activity was observed in the > 3 kDa fraction. Reversed-phase HPLC analysis of this fraction showed broad peaks characteristic of high-molecular-weight polyphenols. Decomposition reactions did not provide evidence of condensed or acid-hydrolyzable tannins. Therefore, polyphenols contained in the corn silk water extract were considered to be lignin-carbohydrate complex. The 1H- and 13C-nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectroscopy spectra of the > 3 kDa fraction were in agreement with the values reported for lignin. Consequently, we concluded that lignin-carbohydrate complex is one of the active components against glycation in the corn silk water extract.
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26
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Optimizing Extractability, Phytochemistry, Acute Toxicity, and Hemostatic Action of Corn Silk Liquid Extract. J CHEM-NY 2022. [DOI: 10.1155/2022/3059725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The technological parameters and quality indicators of corn silk were evaluated in this study: specific density, volumetric density, bulk density, porosity, spatial layer, free volume of the layer, the absorption coefficient, weight loss on drying, and extractives. The technology for obtaining a liquid extract of corn silk was developed. The most effective extractant was discovered to be 40% ethanol, with an extraction time of 120 minutes. The qualitative composition and quantitative content of the major groups of biologically active substances (BAS) in the obtained liquid extract were determined. The qualitative composition of the main groups of BAS was determined by conventional chemical reactions. This extract contained free reduced sugars, glycosides (bound reduced sugars), phenols, tannins, flavonoids, saponins, and hydroxycinnamic acids. The quantitative content of phenolic compounds was performed by UV-vis-spectrophotometry. Total phenols, tannins, flavonoids, and hydroxycinnamic acids had quantitative contents of 8.25 ± 0.33%, 1.4 ± 0.03%, 2.20 ± 0.06%, 3.30 ± 0.13%, respectively. The acute toxicity study was carried out with a single intragastric administration to outbred unanesthetized white rats of both sexes. Duration of observation of animals was 14 days. It was revealed that corn silk extract at doses of up to 5.0 ml/kg is safe. A single injection of a liquid extract has no effect on internal organs when compared to a control group. Corn silk liquid extract’s hemostatic efficacy was assessed using blood clotting time, prothrombin time, and blood clot retraction index. The corn silk liquid extract reduces blood coagulation time, decreases prothrombin time, and increases the blood clot retraction index. According to these findings, corn silk liquid extract is rich in phytochemicals and possesses a potential therapeutic effect on bleeding disorders. Furthermore, it could be used in the pharmaceutical sciences industry to develop medicines for testing in the treatment of various diseases.
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27
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Biomaterials as regenerative medicine in Poly Cystic Ovarian Syndrome (PCOS) treatment. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Calabrese EJ, Dhawan G, Kapoor R, Agathokleous E, Calabrese V. Hormesis: Wound healing and keratinocytes. Pharmacol Res 2022; 183:106393. [PMID: 35961478 DOI: 10.1016/j.phrs.2022.106393] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/03/2022] [Accepted: 08/08/2022] [Indexed: 12/18/2022]
Abstract
Hormetic dose responses (i.e., a biphasic dose/concentration response characterized by a low dose stimulation and a high dose inhibition) are shown herein to be commonly reported in the dermal wound healing process, with the particular focus on cell viability, proliferation, and migration of human keratinocytes in in vitro studies. Hormetic responses are induced by a wide range of substances, including endogenous agents, numerous drug and nanoparticle preparations and especially plant derived extracts, including many well-known dietary supplements as well as physical stressor agents, such as low-level laser treatments. Detailed mechanistic studies have identified common signaling pathways and their cross-pathway communications that mediate the hormetic dose responses. These findings suggest that the concept of hormesis plays a fundamental role in wound healing, with important potential implications for agent screening and evaluation, as well as clinical strategies.
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Affiliation(s)
- Edward J Calabrese
- Professor of Toxicology; School of Public Health and Health Sciences, Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003 USA.
| | - Gaurav Dhawan
- Sri Guru Ram Das (SGRD); University of Health Sciences, Amritsar, India.
| | - Rachna Kapoor
- Saint Francis Hospital and Medical Center; Hartford, CT, USA.
| | - Evgenios Agathokleous
- School of Applied Meteorology; Nanjing University of Information Science & Technology; Nanjing 210044, China.
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine University of Catania, Via Santa Sofia 97, Catania 95123, Italy.
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Sarfare S, Khan SI, Zulfiqar F, Radhakrishnan S, Ali Z, Khan IA. Undescribed C-Glycosylflavones from Corn Silk and Potential Anti-inflammatory Activity Evaluation of Isolates. PLANTA MEDICA 2022; 88:745-752. [PMID: 34952556 DOI: 10.1055/a-1728-1347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Phytochemical investigation of corn silk resulted in isolation and characterization of four flavone C-glycosides, chrysoeriol 6-C-β-oliopyranosyl-7-O-β-D-glucopyranoside (1: ), 3'-methoxycassiaoccidentalin A (2: ), chrysoeriol 6-C-β-boivinopyranosyl-7-O-β-D-glucopyranoside (3: ), and ax-4″-OH-3'-methoxymaysin (4: ), a triterpenoid, friedelin (5: ), two sterols, (22E)-5α,8α-epidioxyergosta-6,22-dien-3β-ol (6: ) and 6β-hydroxystigmasta-4,22-diene-3-one (7: ), and a mixture of β-sitosterol and stigmasterol. Compounds 1: and 2: were previously undescribed. Structure elucidation of the isolated compounds was attained using spectral data including 1D and 2D NMR and HRESIMS. Compounds1, 2, 5: , and 6: inhibited iNOS activity in LPS-induced macrophages and decreased nitrite levels by 68.64 ± 4.46, 65.67 ± 6.47, 88.50 ± 0.50, and 94.00 ± 4.00%, respectively, at 50 µM. Compound 5: also showed inhibition of NF-κB (51.00 ± 1.50%). Compounds 1: and 2: induced NAG-1 activity in chondrocytes by 1.80 ± 0.05 and 2.00 ± 0.13 fold, respectively. The extract of corn silk, however, did not exhibit inhibition of iNOS or NF-κB but induced NAG-1 by 1.80 ± 0.51 fold.
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Affiliation(s)
- Satish Sarfare
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, United States
- Department of Zoology, SIES College of Arts, Science & Commerce, Mumbai, India
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, United States
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, Mississippi, United States
| | - Fazila Zulfiqar
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, United States
| | - Srivedavyasasri Radhakrishnan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, United States
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, United States
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, Mississippi, United States
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Singh J, Kaur S, Rasane P, Kumar V, Nanda V. Effect of particle size on physical, techno‐functional and antioxidant properties of corn silk powder. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jyoti Singh
- Department of Food Technology and Nutrition School of Agriculture, Lovely Professional University Phagwara Punjab India
| | - Sawinder Kaur
- Department of Food Technology and Nutrition School of Agriculture, Lovely Professional University Phagwara Punjab India
| | - Prasad Rasane
- Department of Food Technology and Nutrition School of Agriculture, Lovely Professional University Phagwara Punjab India
| | - Vikas Kumar
- Department of Food Science and Technology Punjab Agricultural University Ludhiana Punjab 141027 India
| | - Vikas Nanda
- Sant Longowal Institute of Engineering and Technology Sangrur
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31
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Al-Khayri JM, Yüksel AK, Yüksel M, Işık M, Dikici E. Phenolic Profile and Antioxidant, Anticholinergic, and Antibacterial Properties of Corn Tassel. PLANTS 2022; 11:plants11151899. [PMID: 35893603 PMCID: PMC9330707 DOI: 10.3390/plants11151899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/15/2022] [Accepted: 07/20/2022] [Indexed: 11/16/2022]
Abstract
Corn tassel (CT) is a waste part of the corn plant. It is a good co-product and rich in terms of bioactive compounds and phytochemicals. This research tried to show the phenolic profile, antioxidants, anticholinergic activities, and antibacterial properties of CT ethanol extract. The phenolic content analysis of the CT was determined quantitatively by LC-MS/MS, and the antioxidant capacity was measured using ABTS, DPPH, Cu2+–Cu+, and Fe3+–Fe2+ reducing methods. The anticholinergic measurements of CT were detected by inhibition of acetylcholinesterase (AChE). The antibacterial activity was determined by MIC and disc diffusion methods. Many phenolic compounds such as vanillic acid, caffeic acid, fumaric acid, acetohydroxamic acid, butein, myricetin, resveratrol, catechin hydrate, and 4-hydroxybenzoic acid were detected in ethanol extract of CT. The obtained plant ethanol extract had a 7.04% DPPH value, while it showed ABTS activity at 9.45%. Moreover, it had a 0.10 mg/mL inhibition effect on the AChE in terms of IC50 values. The ethanol extract of the CT had an antibacterial property on the investigated bacteria at different ratios. In conclusion, this research aims to consider CT as a source of phenolic compounds and to reveal its bioactive properties and its effects on the treatment of some diseases.
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Affiliation(s)
- Jameel M. Al-Khayri
- Department of Agricultural Biotechnology, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Correspondence: (J.M.A.-K.); (A.K.Y.)
| | - Arzu Kavaz Yüksel
- Department of Food Technology, Technical Sciences Vocational School, Atatürk University, Erzurum 25240, Turkey
- Correspondence: (J.M.A.-K.); (A.K.Y.)
| | - Mehmet Yüksel
- Department of Food Engineering, Faculty of Agriculture, Atatürk University, Erzurum 25240, Turkey;
| | - Mesut Işık
- Department of Bioengineering, Faculty of Engineering, Bilecik Şeyh Edebali University, Bilecik 11230, Turkey;
| | - Emrah Dikici
- Science and Technology Application and Research Center, Aksaray University, Aksaray 68100, Turkey;
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Rasool M, Mousa T, Alhamadani H, Ismael A. Therapeutic potential of medicinal plants for the management of renal stones: A review. BAGHDAD JOURNAL OF BIOCHEMISTRY AND APPLIED BIOLOGICAL SCIENCES 2022. [DOI: 10.47419/bjbabs.v3i02.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Kidney stone disease is the third most common urological ailment worldwide, people. The mechanism of stone formation includes: urine supersaturation, aggregation, retention, nucleation, and growth of crystals in the cells of the renal tubular epithelium. Kidney stones may cause extreme pain and blockage of urine flow. They are usually treated with conventional drugs and shock wave (ESWL) as well as a variety of medications that may cause several adverse effects. The remaining stone fragments and the risk of infection following ESWL are major challenges in the treatment of kidney stones. Recently, despite the emergence of modern drugs, medicinal plants have been recognized and utilized in many nations clinically due to their safety profile, efficiency, cultural acceptance, and fewer side effects than approved drugs. Medicinal plants are used in different cultures as a reliable source of natural remedies. The aim of this review is to provide comprehensive information about traditionally used plants as well as their scientifically proven pharmacological activities, their primary chemical ingredients, and potential mechanisms of action, such as analgesic, astringent, demulcent, diuretic activity, antioxidant activity, inhibition of the inflammatory process, nucleation inhibition, crystallization inhibition, inhibition of crystal aggregation, reducing , reducing stone size, and reducing urine supersaturation.
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Abdin M, El‐Beltagy AE, Naeem MA. Characterisation, rheological properties and immunomodulatory efficiency of corn silk polysaccharides. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15832] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mohamed Abdin
- Agriculture Research Center Food Technology Research Institute Giza 12611 Egypt
| | - Alaa El‐Dein El‐Beltagy
- Department of Food Science and Nutrition, College of Science Taif University Taif 21944 Saudi Arabia
| | - Mohamed Ahmed Naeem
- Nutrition and Food Science of Ain Shams University Specialized Hospital Ain Shams University El Khalifa El Maamoun Cairo 11588 Egypt
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Lemon Balm and Corn Silk Mixture Alleviates Metabolic Disorders Caused by a High-Fat Diet. Antioxidants (Basel) 2022; 11:antiox11040730. [PMID: 35453415 PMCID: PMC9029851 DOI: 10.3390/antiox11040730] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/05/2022] [Accepted: 04/05/2022] [Indexed: 02/06/2023] Open
Abstract
We recently reported that varying combination ratios of lemon balm (Mellissa officinalis L.) and corn silk extracts (Stigma of Zea mays L. fruit) could reduce the obesity caused by a high-fat diet (HFD). The present study investigated the dose-dependent effect of a 1:1 (w:w) mixture of lemon balm and corn silk extracts (M-LB/CS) on HFD-mediated metabolic disorders and compared the effect with metformin. Oral administration of 50–200 mg/kg of M-LB/CS for 84 days significantly inhibited HFD-induced body weight gain, adipocyte hypertrophy, and lipogenic gene induction without affecting food consumption in mice. Biochemical analyses showed that M-LB/CS blocked abnormal lipid accumulation in the blood by escalating fecal lipid excretion. In addition, M-LB/CS prevented HFD-mediated pancreatic atrophy, decreased the number of insulin- and glucagon-immunoreactive cells, and inhibited increases in glycated hemoglobin, glucose, and insulin. Moreover, M-LB/CS also reduced hepatic injury, lipid accumulation, gluconeogenesis, and lipid peroxidation in parallel with the induction of AMP-activated protein kinase and antioxidant enzymes. Furthermore, M-LB/CS protected the kidney by inhibiting tubular vacuolation and reducing serum creatinine and blood urea nitrogen levels. The prophylactic effect of 100 mg/kg M-LB/CS-administration was comparable to that of metformin. Therefore, M-LB/CS may be an alternative option for managing obesity and its related metabolic disorders.
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Maize Silk Biogenic Nanoceria (CeO2NPs) Enhanced Sequential Injection-Chemiluminescence Detection of Ferulic, Sinapic and p-Coumaric in Yellow Maize Kernels. PLANTS 2022; 11:plants11070885. [PMID: 35406865 PMCID: PMC9003254 DOI: 10.3390/plants11070885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 12/02/2022]
Abstract
The current study demonstrated the capability of using maize silk as a green, simple, clean, safe, and cost-effective platform for the biosynthesis of cerium oxide (CeO2NPs). Several spectroscopic and microscopic analyses were employed to characterize the resulted biogenic nanoceria. When the concentration of the CeO2NPs was elevated from 25 to 100 ug mL−1, the CeO2NPs exhibited strong scavenging potential ranging from 60.21 to 75.11% and 56 to 77% for 1,1-diphenyl-2- picrylhydrazyl (DPPH•) and 2-2′-azino-bis(3-ethyl benzothiazoline-6-sulphonic acid) (ABTS) tests, respectively. The quantitative determination of ferulic, sinapic, and p-coumaric acids was carried out using an eco-friendly, cost-effective, and optimized ultrasensitive nanoceria enhanced sequential injection-chemiluminescence (SIA-CL) system. The highest amount was presented by the ferulic acid (1636 ± 2.61 ug/gdw), followed by p-coumaric acid (206 ± 1.12 ug/gdw) and sinapic acid (123 ± 2.15 ug/gdw). The intrinsic capabilities of the biogenic CeO2NPs in enhancing the developed system reveal its potential role in detecting phenolic compounds with great sensitivity.
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CS@Cu2O and Magnetic Fe3O4@SiO2-pAMBA-CS-Cu2O as Heterogeneous Catalysts for CuAAC Click Reaction. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Anti-diabetic potential of Corn silk ( Stigma maydis): An in-silico approach. J Diabetes Metab Disord 2022; 21:445-454. [PMID: 35673494 PMCID: PMC9167408 DOI: 10.1007/s40200-022-00992-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/26/2022] [Indexed: 10/19/2022]
Abstract
Corn silk is known to possess anti-diabetic activity, the current study is aimed to predict the binding affinity of bio-actives from corn silk against targets involved in diabetes mellitus i.e. Protein Tyrosine Phosphatase 1-B (PTP1B), Glucose Transporter-1 (GLUT1), Dipeptidyl Peptidase-4 (DPP4), α-glucosidase, and α-amylase. The 3D molecular structure of bio-actives was retrieved from the PubChem database and the structure of targets was retrieved from protein data bank. Later, hetero atoms were removed using Discovery studio visualizer 2019. Molecular docking was performed using Autodock4.0. Ten different poses were obtained from which the pose possessing the highest binding affinity was visualized for protein-ligand interaction in Discovery studio visualizer 2019. Twenty-six bio-actives were docked against five different targets i.e. PTPN1B, GLUT1, DPP4, α-glucosidase, and α-amylase from which flavones were found to possess the highest binding affinity towards PTPN1B with a binding energy of -8.5 kcal/mol. Similarly, β-carotene, gallotannins, 3-O-caffeoylquinic acid, and stigmasterol were predicted to possess the highest binding affinity towards GLUT1, DPP4, α-glucosidase, and α-amylase with binding energy -11.1 kcal/mol, -10.7 kcal/mol, -8.9 kcal/mol, and -9.8 kcal/mol respectively. Our study screened the anti-diabetic potential of 26 bio-actives towards five different diabetic proteins indicating a possibility of bio-actives from corn silk to possess anti-diabetic potential which needs to be further validated via experimental protocols; this serves as a future scope as well as lacuna for the present study. Thus, bio-actives from corn silk have anti-diabetic potential and can be used in the future to investigate and develop novel anti-diabetic molecule.
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Ryuk JA, Ko BS, Moon NR, Park S. Protection against Neurological Symptoms by Consuming Corn Silk Water Extract in Artery-Occluded Gerbils with Reducing Oxidative Stress, Inflammation, and Post-Stroke Hyperglycemia through the Gut-Brain Axis. Antioxidants (Basel) 2022; 11:antiox11010168. [PMID: 35052672 PMCID: PMC8773031 DOI: 10.3390/antiox11010168] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 02/01/2023] Open
Abstract
Corn silk (Stigma maydis), rich in flavonoids, is traditionally used to treat edema, depression, and hyperglycemia and may alleviate ischemic stroke symptoms in Chinese medicine. This study examined whether corn silk water extract (CSW) could alleviate ischemic stroke symptoms and post-stroke hyperglycemia in Mongolian gerbils with transient cerebral ischemia and reperfusion (I/R). After being given 0.05% (I/R-LCSW) and 0.2% (I/R-HCSW), 0.02% aspirin (I/R-aspirin), and cellulose (I/R-control) in their 40 energy% fat diets for three weeks, the gerbils underwent an artery occlusion for eight minutes and reperfusion. They took the assigned diet for an additional three weeks. Sham-operated gerbils without artery occlusion had the same diet as Sham-control. CSW intake reduced neuronal cell death in gerbils with I/R and dose-dependently improved the neurological symptoms, including drooped eyes, crouched posture, flexor reflex, and walking patterns. CSW intake also alleviated the short-term memory and spontaneous alteration and grip strength compared to the I/R-control group. The protection against ischemic stroke symptoms was associated with the reduced tumor necrosis factor-α, interleukin-1β, superoxide, and lipid peroxide levels, promoting superoxide dismutase activity in the hippocampus in the CSW groups, compared to the I/R-control. The blood flow measured by Doppler was improved with CSW compared to the I/R-control. Furthermore, CSW intake prevented the post-stroke hyperglycemia related to decreasing pancreatic β-cell mass as much as the Sham-control, and it was related to protection against β-cell apoptosis, restoring the β-cell mass similar to the Sham-control. CSW intake elevated the relative abundance of Lactobacillus, Bifidobacterium, Allobaculum, and Akkermansia compared to the I/R-control. Picrust2 analysis showed that CSW increased the propionate and butyrate metabolism and the starch and glucose metabolism but reduced lipopolysaccharide biosynthesis compared to the I/R-control. In conclusion, CSW intake protects against neuronal cell death and post-hyperglycemia by reducing oxidative stress and inflammation and increasing blood flow and the β-cell mass. The alleviation was associated with promoting the gut-brain axis by changing the gut microbiome community.
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Affiliation(s)
- Jin Ah Ryuk
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 305-811, Korea; (J.A.R.); (B.S.K.)
| | - Byoung Seob Ko
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 305-811, Korea; (J.A.R.); (B.S.K.)
| | - Na Rang Moon
- Department of Food & Nutrition, Obesity/Diabetes Center, Hoseo University, Asan 336-795, Korea;
| | - Sunmin Park
- Department of Food & Nutrition, Obesity/Diabetes Center, Hoseo University, Asan 336-795, Korea;
- Department of Bioconvergence System, Hoseo University, Asan 336-795, Korea
- Correspondence: ; Tel.: +82-41-540-5345
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Diniz GFD, Figueiredo JEF, Lana UGP, Marins MS, Silva DD, Cota LV, Marriel IE, Oliveira-Paiva CA. Microorganisms from corn stigma with biocontrol potential of Fusarium verticillioides. BRAZ J BIOL 2022; 82:e262567. [DOI: 10.1590/1519-6984.262567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 08/01/2022] [Indexed: 12/23/2022] Open
Abstract
Abstract The mycotoxigenic fungus Fusarium verticillioides is the primary maize pathogen and causes the maize stalk and ear rot diseases with significant economic losses. Furthermore, the excessive use of fungicides to control F. verticillioides constitutes threats to the environment and human health. Thus, sustainable alternatives such as biological control are needed to minimize the hazards associated with the current method. Although much is known about the vulnerability of the maize silks as a gateway for several fungal pathogens invading the developing grains, studies on the chemical properties of silk extracts and their resident microbiota are scarce. This study isolated and characterized bacteria and fungi that colonize the maize stigma to assess new potential biocontrol agents. The samples were collected from maize fields in the Brazilian localities of Sete Lagoas-MG, Sidrolândia-MS, Sertaneja-PR, and Goiânia-GO. One hundred sixty-seven microorganisms were isolated, 46% endophytic and 54% epiphytic. First, the antagonist activity was evaluated by the agar disc diffusion method performed in triplicate, and 83% of the isolates showed antagonist activity against F. verticillioides. Then, the 42 most efficient isolates were identified based on the partial sequencing of the bacterial 16S rRNA gene and fungi ITS region. The bacteria belong to the genera Bacillus (57.1%), Burkholderia (23.8%), Achromobacter (7.1%), Pseudomonas (2.4%), and Serratia (2.4%), while the fungi are Penicillium (2.4%), Candida (2.4), and Aspergillus (2.4%). The results showed that microorganisms from maize stigma might represent new promising agents for F. verticillioides control.
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Marouf R, Mbarga JM, Ermolaev A, Podoprigora I, Smirnova I, Yashina N, Zhigunova A, Martynenkova A. Antibacterial activity of medicinal plants against uropathogenic Escherichia coli. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2022; 14:1-12. [PMID: 35784103 PMCID: PMC9245916 DOI: 10.4103/jpbs.jpbs_124_21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 12/07/2021] [Accepted: 12/13/2021] [Indexed: 11/04/2022] Open
Abstract
Urinary tract infections (UTIs) are one of the most common bacterial infections with uropathogenic Escherichia coli (UPEC) being the most prevalent causative agent in both complicated and uncomplicated UTIs. Antibiotic resistance among UPEC has been already demonstrated against a wide variety of antibiotics and the situation is continuing to deteriorate increasing the rate of recurrence and the difficulty of treatment and prophylaxis. Recently, a big attention has been paid to non-antibiotic approaches as an alternative to conventional antibiotics. Among many strategies, phytotherapy has gained a special attention worldwide. Herbal remedies have been used in traditional medicine since ancient times and they are well known for their effectiveness in treating many health conditions including UTIs. Researches are conducted continuously to validate the use of many medicinal plants against UPEC, investigate their mechanisms of action, and determine their active constituents. Our extensive review of the recent literature revealed that many phytochemicals are shown to target and inhibit a wide variety of bioprocesses in UPEC, such as adhesion, motility, biofilm formation, and quorum sensing. Such natural approaches are very promising in confronting the antibiotic resistance of UPEC and can be further used to develop plant-based strategies and pharmaceutical products to treat and prevent UTIs caused by UPEC.
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Sun X, Xue X, Wang X, Zhang C, Zheng D, Song W, Zhao J, Wei J, Wu Z, Zhang Z. Natural variation of ZmCGT1 is responsible for isoorientin accumulation in maize silk. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 109:64-76. [PMID: 34695260 DOI: 10.1111/tpj.15549] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/13/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
Maize (Zea mays L.) silk contains high levels of flavonoids and is widely used to promote human health. Isoorientin, a natural C-glycoside flavone abundant in maize silk, has attracted considerable attention due to its potential value. Although different classes of flavonoid have been well characterized in plants, the genes involved in the biosynthesis of isoorientin in maize are largely unknown. Here, we used targeted metabolic profiling of isoorientin on the silks in an association panel consisting of 294 maize inbred lines. We identified the gene ZmCGT1 by genome-wide association analysis. The ZmCGT1 protein was characterized as a 2-hydroxyflavanone C-glycosyltransferase that can C-glycosylate 2-hydroxyflavanone to form flavone-C-glycoside after dehydration. Moreover, ZmCGT1 overexpression increased isoorientin levels and RNA interference-mediated ZmCGT1 knockdown decreased accumulation of isoorientin in maize silk. Further, two nucleotide polymorphisms, A502C and A1022G, which led to amino acid changes I168L and E341G, respectively, were identified to be functional polymorphisms responsible for the natural variation in isoorientin levels. In summary, we identified the gene ZmCGT1, which plays an important role in isoorientin biosynthesis, providing insights into the genetic basis of the natural variation in isoorientin levels in maize silk. The identified favorable CG allele of ZmCGT1 may be further used for genetic improvement of nutritional quality in maize.
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Affiliation(s)
- Xiaorong Sun
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Xiaofeng Xue
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaqing Wang
- Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Chun Zhang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Dengyu Zheng
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Wei Song
- Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jiuran Zhao
- Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jianhua Wei
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Zhongyi Wu
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Zhongbao Zhang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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AZEVEDO ASD, SEIBERT JB, AMPARO TR, ANTUNES ADS, SOUSA LRD, SOUZA GHBD, TEIXEIRA LFM, VIEIRA PMDA, SANTOS VMRD, NASCIMENTO AMD, NASCIMENTO AMD. Chemical constituents, antioxidant potential, antibacterial study and photoprotective activity of Brazilian corn silk extract. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.98421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Lemon Balm and Corn Silk Extracts Mitigate High-Fat Diet-Induced Obesity in Mice. Antioxidants (Basel) 2021; 10:antiox10122015. [PMID: 34943118 PMCID: PMC8698494 DOI: 10.3390/antiox10122015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 12/31/2022] Open
Abstract
Lemon balm and corn silk are valuable medicinal herbs, which exhibit variety of beneficial effects for human health. The present study explored the anti-obesity effects of a mixture of lemon balm and corn silk extracts (M-LB/CS) by comparison with the effects of single herbal extracts in high-fat diet (HFD)-induced obesity in mice. HFD supplementation for 84 days increased the body weight, the fat mass density, the mean diameter of adipocytes, and the thickness of fat pads. However, oral administration of M-LB/CS significantly alleviated the HFD-mediated weight gain and adipocyte hypertrophy without affecting food consumption. Of the various combination ratios of M-LB/CS tested, the magnitude of the decreases in weight gain and adipocyte hypertrophy by administration of 1:1, 1:2, 2:1, and 4:1 (w/w) M-LB/CS was more potent than that by single herbal extracts alone. In addition, M-LB/CS reduced the HFD-mediated increases in serum cholesterol, triglyceride, and low-density lipoprotein, prevented the reduction in serum high-density lipoprotein, and facilitated fecal excretion of cholesterol and triglyceride. Moreover, M-LB/CS mitigated the abnormal changes in specific mRNAs associated with lipogenesis and lipolysis in the adipose tissue. Furthermore, M-LB/CS reduced lipid peroxidation by inhibiting the HFD-mediated reduction in glutathione, catalase, and superoxide dismutase. Therefore, M-LB/CS is a promising herbal mixture for preventing obesity.
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Purification, Identification and Characterization of Antioxidant Peptides from Corn Silk Tryptic Hydrolysate: An Integrated In Vitro-In Silico Approach. Antioxidants (Basel) 2021; 10:antiox10111822. [PMID: 34829693 PMCID: PMC8615004 DOI: 10.3390/antiox10111822] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/08/2021] [Accepted: 11/12/2021] [Indexed: 11/23/2022] Open
Abstract
Corn silk (CS) is an agro-by-product from corn cultivation. It is used in folk medicines in some countries, besides being commercialized as health-promoting supplements and beverages. Unlike CS-derived natural products, their bioactive peptides, particularly antioxidant peptides, are understudied. This study aimed to purify, identify and characterize antioxidant peptides from trypsin-hydrolyzed CS proteins. Purification was accomplished by membrane ultrafiltration, gel filtration chromatography, and strong-cation-exchange solid-phase extraction, guided by 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical cation (ABTS•+) scavenging, hydrogen peroxide scavenging, and lipid peroxidation inhibition assays. De novo sequencing identified 29 peptides (6–14 residues; 633–1518 Da). The peptides consisted of 33–86% hydrophobic and 10–67% basic residues. Molecular docking found MCFHHHFHK, VHFNKGKKR, and PVVWAAKR having the strongest affinity (−4.7 to −4.8 kcal/mol) to ABTS•+, via hydrogen bonds and hydrophobic interactions. Potential cellular mechanisms of the peptides were supported by their interactions with modulators of intracellular oxidant status: Kelch-like ECH-associated protein 1, myeloperoxidase, and xanthine oxidase. NDGPSR (Asn-Asp-Gly-Pro-Ser-Arg), the most promising peptide, showed stable binding to all three cellular targets, besides exhibiting low toxicity, low allergenicity, and cell-penetrating potential. Overall, CS peptides have potential application as natural antioxidant additives and functional food ingredients.
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Al-Qudsi F, Alsudairi D. Effect of Corn Silk Aqueous Extract on Brown Adipose Tissue of Embryos and Neonates of Diabetic Pregnant Mice: A Histological Study. J Microsc Ultrastruct 2021; 10:133-139. [PMID: 36504586 PMCID: PMC9728089 DOI: 10.4103/jmau.jmau_22_21] [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: 02/23/2021] [Revised: 03/20/2021] [Accepted: 03/27/2021] [Indexed: 12/15/2022] Open
Abstract
Context Many congenital malformations are seen increasingly, due to diabetic mothers causing a burden on health systems. Corn silk (CS) extract has been used as a natural hypoglycemic treatment. However, its teratogenic safety was not studied. Aims Therefore, in this study, we examine the effect of CS aqueous extract on fetuses, offspring of normal and diabetic female mice treated with CS aqueous extract. Settings and Design Pregnant female mice were divided into two groups diabetic and nondiabetic. Then, each of these groups was divided into control and treated. Subjects and Methods A daily dose of 4 g/kg of CS aqueous extract was given orally to the treated groups, control groups were given distilled water. The collection of samples was at day 16.5 of pregnancy, and neonates. Brown adipose tissue (BAT) in the sections of the preserved sample was examined. Statistical Analysis Used BAT areas were measured from 10 samples of each treatment age group in 2 sections. Data were analyzed with one-way ANOVA, then, two-independent sample test (Mann-Whitney) was done to test the significance of differences between groups. Results The BAT areas were negatively affected by diabetes and the extract. Both the extract and diabetes caused an increase in fat accumulation in the adipocytes with varying degrees. Conclusions This study showed for the first time to our knowledge that the use of CS aqueous extract during pregnancy affected BAT organization and area, and that the used dose did not decrease the malformations caused by diabetes. More studies with different doses should be investigated.
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Affiliation(s)
- Fatma Al-Qudsi
- Department of Biology, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia,Address for correspondence: Dr. Fatma Al-Qudsi, Department of Biology, Faculty of Science, King Abdulaziz University, PO Box: 42650, Jeddah 21551, Saudi Arabia. E-mail:
| | - Dema Alsudairi
- Department of Biology, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Chen Q, Huang L, Zheng G, Zhang G, Zhou F, Li P. Performance and retention mechanisms of corn silk to atmospheric heavy metal lead. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:1039-1049. [PMID: 34726965 DOI: 10.1080/15226514.2021.1994524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Atmospheric heavy metals are seriously harmful, and porous materials have unique advantages in the control of air pollutants. However, the direct use of plant porous materials to purify atmospheric heavy metals are rare. So agricultural waste corn silk with porous structures was selected to analyze the retention capability and mechanism to the atmospheric lead. The results show that the corn silk can effectively retain atmospheric lead in natural growing state or fixed experimental conditions. The analysis of a total of 765 corn silk samples from 17 different regions in Shandong province, China, shows that atmospheric lead is the main source of lead in the corn silk, and corn silk can be used for biological monitoring of atmospheric lead to some extent. Based on the analysis with different techniques including scanning electron microscope (SEM), energy spectrum dispersive X-ray spectrometer (EDS), Fourier infrared spectrometer (FTIR) and Zeta potential, the effective retention of lead by corn silk is due to a variety of mechanisms, including physical adsorption, electrostatic adsorption, complexation, chelation and ion exchange. So agricultural waste corn silk has great potential in the application of biosorption or preparation of porous materials in purification of atmospheric heavy metals.
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Affiliation(s)
- Qianxiu Chen
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Liping Huang
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Guiling Zheng
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Guodong Zhang
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Feng Zhou
- School of Food Science, Nanjing Xiaozhuang University, Nanjing, Jiangsu, China
| | - Peng Li
- School of Resources and Environment, Qingdao Agricultural University, Qingdao, Shandong, China
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Zhang L, Yang Y, Wang Z. Extraction Optimization of Polysaccharides From Corn Silk and Their Antioxidant Activities in vitro and in vivo. Front Pharmacol 2021; 12:738150. [PMID: 34566661 PMCID: PMC8455810 DOI: 10.3389/fphar.2021.738150] [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: 07/08/2021] [Accepted: 08/18/2021] [Indexed: 11/23/2022] Open
Abstract
Response surface technique was employed for improving the extraction of corn silk polysaccharides (CSP). Temperature, liquid-to-solid ratio, and per extraction time were all examined as separate factors. The optimal extraction parameters were determined by fitting experimental data to a second-order polynomial; a liquid-to-solid ratio of 21.5 ml/g, temperature equivalent to 88°C, and extraction time of 1.87 h. The experimental yield of the extracted polysaccharides following the application of these conditions was 4.33 ± 0.08% (dry weight), which fit quite well with the predicted value. CSP’s strong scavenging capabilities against hydroxyls, 1,1-diphenyl-2-picrylhydrazyl radicals, and superoxide anions along with its excellent reducing potential, were demonstrated in an in vitro antioxidant experiment. Meanwhile, in vivo testing revealed that CSP substantially enhanced glutathione peroxidase and superoxide dismutase activities. The Malondialdehyde levels in the liver and serum of aged mice also underwent a decrease. This study found that CSP has a substantial antioxidant potential in vitro and in vivo, suggesting that it might be used as an antioxidant in food and medicine.
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Affiliation(s)
- Liang Zhang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Yang Yang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Zhanyong Wang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
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Boeira CP, Alves JDS, Flores DCB, Moura MR, Melo PTS, Rosa CS. Antioxidant and antimicrobial effect of an innovative active film containing corn stigma residue extract for refrigerated meat conservation. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15721] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Caroline Pagnossim Boeira
- Department of Food Science and Technology Universidade Federal de Santa Maria (UFSM) Santa Maria Brazil
| | - Jamila dos Santos Alves
- Department of Food Science and Technology Universidade Federal de Santa Maria (UFSM) Santa Maria Brazil
| | | | - Márcia Regina Moura
- Department of Physics and Chemistry Universidade Estadual Paulista (UNESP) Ilha Solteira Brazil
| | - Pamela Thais Sousa Melo
- Department of Physics and Chemistry Universidade Estadual Paulista (UNESP) Ilha Solteira Brazil
| | - Claudia Severo Rosa
- Department of Food Science and Technology Universidade Federal de Santa Maria (UFSM) Santa Maria Brazil
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Potential Effect of Polyphenolic-Rich Fractions of Corn Silk on Protecting Endothelial Cells against High Glucose Damage Using In Vitro and In Vivo Approaches. Molecules 2021; 26:molecules26123665. [PMID: 34208534 PMCID: PMC8235591 DOI: 10.3390/molecules26123665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/05/2021] [Accepted: 06/09/2021] [Indexed: 11/17/2022] Open
Abstract
Endothelial cell dysfunction is considered to be one of the major causes of vascular complications in diabetes. Polyphenols are known as potent antioxidants that can contribute to the prevention of diabetes. Corn silk has been reported to contain polyphenols and has been used in folk medicine in China for the treatment of diabetes. The present study aims to investigate the potential protective role of the phenolic-rich fraction of corn silk (PRF) against injuries to vascular endothelial cells under high glucose conditions in vitro and in vivo. The protective effect of PRF from high glucose toxicity was investigated using human umbilical vein endothelial cells (HUVECs). The protective effect of PRF was subsequently evaluated by using in vivo methods in streptozotocin (STZ)-induced diabetic rats. Results showed that the PRF significantly reduced the cytotoxicity of glucose by restoring cell viability in a dose-dependent manner. PRF was also able to prevent the histological changes in the aorta of STZ-induced diabetic rats. Results suggested that PRF might have a beneficial effect on diabetic patients and may help to prevent the development and progression of diabetic complications such as diabetic nephropathy and atherosclerosis.
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Yanyu Decoction for Aged Patients with Stable Coronary Artery Disease: A Systematic Review and Meta-Analysis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6615035. [PMID: 33959186 PMCID: PMC8075676 DOI: 10.1155/2021/6615035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 03/28/2021] [Accepted: 04/02/2021] [Indexed: 02/06/2023]
Abstract
Background There was limited evidence of treatments aiming at aged coronary artery disease (CAD) patients. Yanyu decoction (YD) has been used as adjuvant therapy in aged patients with stable CAD and might be a new treatment worthy of recommendation for CAD patients. This study was to evaluate the combined effects of YD plus conventional pharmaceutical treatment (CPT) on senile patients with stable CAD. Methods This review was designed according to the PRISMA (Preferred Reported Items for Systematic Reviews and Meta-Analysis) recommendations. A literature search was conducted in seven electronic databases from their inception until August 2020. Primary outcomes of interest were adverse cardiovascular events, including cardiac mortality, acute myocardial infarction (AMI), and unstable angina (UA). The secondary outcomes were blood lipids and hemorheology. Studies were pooled to calculate the risk ratio or weighted mean difference and corresponding 95% confidence interval. Results Five studies recruiting 848 aged patients with stable CAD were included. Patients receiving YD as an adjuvant have fewer adverse cardiovascular events, including cardiac mortality, AMI, and UA. Besides, YD plus CPT has a better effect on reducing triglycerides, low-density lipoprotein cholesterol, and improving high-density lipoprotein cholesterol. Moreover, significant effects of YD plus CPT for reducing blood viscosity, plasma viscosity, and platelet aggregation rate were found compared with CPT alone. Conclusion YD plus CPT showed better efficacy than CPT on reducing adverse cardiovascular events and improving hemorheology and blood lipids for aged patients with stable CAD. Our findings may suggest YD as an adjuvant natural-based treatment for CAD. However, more rigorous and larger trials are essential to validate our results, and further consideration of CAD studies specific to aged patients is needed.
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