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de Moraes JFC, Rechenchoski DZ, Dyna AL, Cunha AP, Ricardo NMPS, de Farias SS, de Morais SM, Yamauchi LM, Faccin-Galhardi LC. Characterization and Promising in vitro Antiherpetic Effect of Galactomannan from Delonix regia Seeds. Curr Microbiol 2024; 81:375. [PMID: 39317904 DOI: 10.1007/s00284-024-03903-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 09/15/2024] [Indexed: 09/26/2024]
Abstract
Herpes simplex virus (HSV) infections can occur throughout life, thereby allowing transmission to new hosts, with an impact on public health. Acyclovir remains the treatment of choice for these infections; however, an increase in resistant strains in recent years has been observed. In this study, the activity of a native Delonix regia galactomannan (NDr) against HSV-1 was investigated in vitro. NDr was characterized using infrared spectroscopy and NMR. Evaluation of cytotoxicity and the antiviral effect was determined, respectively, by MTT and plaque reduction assays. The NDr concentrations that inhibited cell viability (CC50) and viral infection (IC50) by 50% were above 2000 and 64 μg/mL, respectively. Thus, the polysaccharide showed a high selectivity index (> 31.25). When NDr was added at different stages of HSV-1 replication, a strong inhibitory effect was found by direct interaction with the virus (71-67%, virucidal effect) or previously with the cell, 6 h before infection (99.8-68.4%, prophylactic effect) at concentrations from 200 to 50 μg/mL. NDr showed similar effects in prophylactic 1 h (52%) and adsorption inhibition (55%) assays at 200 μg/mL. A reduction in the antiherpetic effect was observed after infection. These results suggest that NDr is effective in the early stages of HSV-1 infection and is a promising agent for controlling herpetic infections.
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Affiliation(s)
| | | | - André Luiz Dyna
- Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, PR, CEP 86057-970, Brazil
| | - Arcelina Pacheco Cunha
- Departamento de Química Orgânica E Inorgânica, Universidade Federal Do Ceará, Fortaleza, CE, CEP 60455-760, Brazil
| | | | - Silvana Silveira de Farias
- Programa Rede Nordeste de Biotecnologia, Universidade Federal Do Ceará, Fortaleza, CE, CEP 60455-760, Brazil
| | - Selene Maia de Morais
- Programa Rede Nordeste de Biotecnologia, Universidade Federal Do Ceará, Fortaleza, CE, CEP 60455-760, Brazil
| | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, PR, CEP 86057-970, Brazil
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Mahendrarajan V, Lazarus H, Easwaran N. Quorum quenching mediated biofilm impediment in Chromobacterium violaceum and Staphylococcus aureus by leaf extracts of Delonix elata. Heliyon 2024; 10:e31898. [PMID: 38882294 PMCID: PMC11177153 DOI: 10.1016/j.heliyon.2024.e31898] [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: 09/09/2023] [Revised: 05/21/2024] [Accepted: 05/23/2024] [Indexed: 06/18/2024] Open
Abstract
Biofilms are complex communities of microorganisms that cause systemic infections, resistance development and delay in healing wounds. Biofilms can form in various parts of the human body, such as the teeth, lungs, urinary tract, and wounds. Biofilm complicates the effects of antibiotics in treating infections. In search of a cure, a plant-based phyto component was selected for this investigation as an anti-quorum-mediated biofilm restricting agent in Gram-negative Chromobacterium violaceum and Gram-positive Staphylococcus aureus. The bioactive components in Delonix elata (DE) ethyl acetate extract were identified using Gas chromatography and mass spectrometry. The extract was examined for toxicity using 3T3 cell lines and brine shrimp and ascertained to be non-toxic. Violacein was inhibited up to 68.81 % in C. violaceum at 0.6 mg/ml concentration. Hemolysin synthesis impediments in C. violaceum and S. aureus were 80 % and 51.35 %, respectively, at 0.6 mg/ml of DE extract. At 0.6 mg/ml, EPS was abated by up to 49 % in C. violaceum and 35.26 % in S. aureus. DE extract prevented biofilm formation in C. violaceum and S. aureus up to 76.45 % and 58.15 %, respectively, while associated eDNA was suppressed up to 67.50 % and 53.47 % at the respective sub-MIC concentrations. Expression of genes such as cviI, cviR, vioA, vioB, and vioE were dramatically reduced in C. violaceum, while genes such as agrA, sarA, fnbA, and fnbB were significantly reduced in S. aureus. Docking demonstrates that two or more DE molecules bind efficiently to the QS receptors of C. violaceum and S. aureus. Thus, DE extract can be investigated for therapeutic purposes against pathogenic microorganisms by rendering them less virulent through quorum quenching mediated action.
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Affiliation(s)
- Venkatramanan Mahendrarajan
- Department of Integrative Biology, School of Biosciences and Technology, Vellore Institute of Technology, Tiruvalam Road, Katpadi, India
| | - Huldah Lazarus
- Department of Integrative Biology, School of Biosciences and Technology, Vellore Institute of Technology, Tiruvalam Road, Katpadi, India
| | - Nalini Easwaran
- Department of Integrative Biology, School of Biosciences and Technology, Vellore Institute of Technology, Tiruvalam Road, Katpadi, India
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Harshitha D, Kumar A, Mahesh HM, Renuka CG. Anthocyanins of Delonix Regia Floral Petals: A Novel Approach on Fluorescence Enhancement, Forster Resonance Energy Transfer Mechanism and Photostability Studies for Optoelectronic Applications. J Fluoresc 2024:10.1007/s10895-024-03730-9. [PMID: 38739317 DOI: 10.1007/s10895-024-03730-9] [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: 03/02/2024] [Accepted: 04/17/2024] [Indexed: 05/14/2024]
Abstract
In this work, we focused on extracting the anthocyanin dye in acetone, butanol, ethanol, and water solvents from Delonix regia flowers by a simple maceration extraction process. The identification of functional group analysis, vibrational studies, energy transfer mechanisms, optoelectronic properties, photostability studies, FRET-assisted potential light emissions and photometric properties of the anthocyanin dyes are successively investigated. FTIR spectroscopy and vibrational studies have confirmed the existence of polyphenolic groups in 2-phenyl chromenylium (anthocyanin) dyes. The optoelectronic results show the least direct bandgap (2.04 eV), indirect bandgap (1.55 eV), Urbach energy (0.380 eV), high refractive index (1.20), dielectric constant (2.794), and high optical conductivity (1.954 × 103 S/m) for the anthocyanin dye extracted found in water solvent. The photoluminescence properties such as Stoke's shift, high quantum yield, and lifetime results show that anthocyanin dyes are promising candidates for red-LEDs and optical materials. The absorption and emission spectra of the anthocyanin dyes follow the mirror image rule and the Franck-Condon factor exists between vibrational energy levels corresponding to all the electronic transitions. The excellent correspondence between the absorption and emission spectra reinforces that the anthocyanins are efficient (46%) FRET probes. Further, photometric properties such as CIE, CRI, CCT and colour purity results of anthocyanins in all studied solvents revealed that this material exhibits orange to red shades (x = 0.48 → 0.54 and y = 0.36 →0.45) and is well suitable for have great potential in the manufacturing of Organic-LEDs and other optoelectronic device applications.
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Affiliation(s)
- D Harshitha
- Department of Physics, Bangalore University, Jnanabharathi campus, Bengaluru, 560056, India
| | - Anil Kumar
- Department of Physics, Government First Grade College, Sindhanur, 584128, India
| | - H M Mahesh
- Department of Electronic Science, Bangalore University, Jnanabharathi campus, Bangalore, 560056, India
| | - C G Renuka
- Department of Physics, Bangalore University, Jnanabharathi campus, Bengaluru, 560056, India.
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Nguyen TTT, Nguyen HD, Bui AT, Pham KHT, Van KTP, Tran LT, Tran MH. Phylogenetic analysis and morphology of Ganoderma multipileum, a Ganoderma species associated with dieback of the metropolitan woody plant Delonix regia (Boj. ex Hook.) Raf. in Vietnam. Sci Prog 2023; 106:368504231195503. [PMID: 37611190 PMCID: PMC10467396 DOI: 10.1177/00368504231195503] [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] [Indexed: 08/25/2023]
Abstract
Ganoderma multipileum, a wood decay mushroom, was initially discovered and classified in Taiwan through the analysis of its morphology and the internal transcribed spacer (ITS) region of nuclear ribosomal DNA. In this study, we identified a mushroom associated with the dieback of Delonix regia (Boj. ex Hook.) Raf., a woody ornamental street tree in Vietnam, as Ganoderma multipileum. This classification was based on phylogenetic analysis of ITS, RPB2, and TEF1 sequences, as well as morphology assessment and scanning electron microscope observation of basidiospores. The phylogenetic analysis revealed that the specimens collected in Vietnam formed a monophyletic group of Ganoderma multipileum with a high bootstrap value and posterior probability (100%/1.00). Furthermore, the morphological features consistent with laccate Ganoderma, including a thin pileipellis composed of enlarged and bulbous hyphae, and the basidiomes exhibited two different phenotypes. Notably, scanning electron microscopy of the basidiospores revealed ovoid spores with numerous echinules, providing the first documented evidence of this characteristic for Ganoderma multipileum. This research represents the first recorded instance of Ganoderma multipileum in Vietnam associated with the dieback of Delonix regia.
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Affiliation(s)
- Trang Thi Thu Nguyen
- Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hoang Duc Nguyen
- Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Anh Tu Bui
- University of Medicine and Pharmacy Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Khanh Huyen Thi Pham
- School of Pharmacy and Medicine, The University of Danang, Da Nang City, Vietnam
| | - Kim Thuong Pham Van
- School of Pharmacy and Medicine, The University of Danang, Da Nang City, Vietnam
| | - Linh Thuoc Tran
- Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Manh Hung Tran
- School of Pharmacy and Medicine, The University of Danang, Da Nang City, Vietnam
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Rahman FB, Ahmed S, Noor P, Rahman MMM, Huq SMA, Akib MTE, Shohael AM. A comprehensive multi-directional exploration of phytochemicals and bioactivities of flower extracts from Delonix regia (Bojer ex Hook.) Raf., Cassia fistula L. and Lagerstroemia speciosa L. Biochem Biophys Rep 2020; 24:100805. [PMID: 32984558 PMCID: PMC7495018 DOI: 10.1016/j.bbrep.2020.100805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/09/2020] [Accepted: 08/11/2020] [Indexed: 12/01/2022] Open
Abstract
Delonix regia (Bojer ex Hook.) Raf., Cassia fistula L. and Lagerstroemia speciosa L. are three ornamental plants that produce colorful flowers. The present study aimed to evaluate the phytochemicals and bioactivities of methanolic extracts of flowers from Delonix regia (DrFME), Cassia fistula (CfFME), and Lagerstroemia speciosa (LsFME). The presence of ten different chemical classes in varying degrees was confirmed while qualitatively screened. During quantitative determination, LsFME possesses the highest amount of total phenolic (418.0 mg/g), flavonoid (50.8 mg/g), and tannin (256.3 mg/g) contents. The extracts showed excellent antioxidant capacity in a concentration-dependent manner with the lowest IC50 value (41.51 μg/mL) displayed by LsFME. LsFME paralyzed the experimental worms at 2.95 min and killed at 3.96 min. DrFME was found to be more effective in thrombolytic (35.5% clot lysis) and anticoagulant activities. Negligible hemolytic activity (IC50 > 200 μg/mL) found for all extracts which suggest their less potential toxicity. The in vivo experiments revealed that the CfFME has the highest analgesic (64.34% pain inhibition) activity while LsFME has the highest antidiarrheal (70.27% inhibition) and antihyperglycemic (46.94% inhibition) activities at 400 mg/kg of body weight doses. This study has shown the presence of phytochemicals and potential bioactivities which indicates the possibility of these flowers to be used as a source of phytochemicals as well as safe and effective natural medicine.
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Key Words
- Bioefficacy
- CE, Catechin equivalent
- CfFME, Cassia fistula flower methanolic extract
- DPPH, 2,2-diphenyl-1-picrylhydrazyl
- DrFME, Delonix regia flower methanolic extract
- Flowers
- Folk medicine
- GAE, Gallic acid equivalent
- IC50, Half-maximal inhibitory concentration
- LsFME, Lagerstroemia speciosa flower methanolic extract
- Mice model
- Ornamental plants
- PT, Prothrombin time
- Phytoconstituents
- SEM, Standard error of the mean
- TAE, Tannic acid equivalent
- TFC, Total flavonoid content
- TPC, Total phenolic content
- TTC, Total tannin content
- UV, Ultra-violet
- aPTT, Activated partial thromboplastin time
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Affiliation(s)
- Faisal Bin Rahman
- Cell Genetics and Plant Biotechnology Laboratory, Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Sium Ahmed
- Cell Genetics and Plant Biotechnology Laboratory, Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Priya Noor
- Cell Genetics and Plant Biotechnology Laboratory, Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Mir Md Mahbubur Rahman
- Cell Genetics and Plant Biotechnology Laboratory, Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - S M Azimul Huq
- Cell Genetics and Plant Biotechnology Laboratory, Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Md Taharat Elahi Akib
- Cell Genetics and Plant Biotechnology Laboratory, Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Abdullah Mohammad Shohael
- Cell Genetics and Plant Biotechnology Laboratory, Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
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Ojo OO, Adegbite OS, Kesinro MO, Womiloju AK, Oluyomi OI. Methanol extracts from Delonix regia leaves modulate apoptosis in cisplatin-induced nephrotoxicity in male rats. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s13596-018-0344-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Yuan YH, Zheng XM, He XH, Liu LP, Xu W, Xia XH, Luo JH, Lyu M, Zhu QL, Wang S, Wu S. [Establishment of cardiac remodeling model in FVB/N mice by intraperitoneal injection of isoproterenol]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:508-513. [PMID: 29972128 PMCID: PMC7389954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/08/2018] [Indexed: 08/01/2024]
Abstract
OBJECTIVE To explore the feasibility of intraperitoneal injection of isoproterenol (ISO) to induce cardiac remodeling in FVB/N mice. METHODS Forty-eight FVB/N mice were divided into back subcutaneous saline group (subcutaneous saline group), intraperitoneal saline group, back subcutaneous ISO group (subcutaneous ISO group), and intraperitoneal ISO group according to the route of administration of saline or ISO. ISO (30 μg/g body weight/day) was given to the subcutaneous ISO group and the intraperitoneal ISO group, twice daily with an interval of 12 hours, for 14 consecutive days. The subcutaneous saline group and the intraperitoneal saline group were injected with an equal volume of saline. The left ventricular end-diastolic posterior wall thickness was measured by echocardiography, and the ratio of heart weight to tibia length was determined. Hematoxylin-eosin staining was used to determine the myocardial fiber diameter. Picric-sirius red staining was used to determine the myocardial collagen deposition area. Quantitative real-time PCR was used to measure the mRNA expression of collagen I. RESULTS Compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups, the intraperitoneal ISO group had increased sizes of the cardiac cavity and the heart. Compared with the subcutaneous saline and intraperitoneal saline groups, the subcutaneous ISO group showed no significant changes in the gross morphology of the cardiac cavity and the heart. The intraperitoneal ISO group showed significant increases in the ratio of heart weight to tibia length, myocardial fiber diameter, left ventricular end-diastolic posterior wall thickness, myocardial collagen area percentage, and the mRNA expression of collagen I compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups (P<0.01). There were no significant differences in the above five indices between the subcutaneous ISO group and the subcutaneous saline and intraperitoneal saline groups (P>0.05). No significant difference in the mortality rate was found between the subcutaneous ISO and intraperitoneal ISO groups (P>0.05). CONCLUSIONS Intraperitoneal injection of ISO can induce cardiac hypertrophy and fibrosis in FVB/N mice.
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Affiliation(s)
- Yong-Hua Yuan
- Department of Pediatric Cardiology, Hunan People's Hospital, Changsha 410005, China.
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Yuan YH, Zheng XM, He XH, Liu LP, Xu W, Xia XH, Luo JH, Lyu M, Zhu QL, Wang S, Wu S. [Establishment of cardiac remodeling model in FVB/N mice by intraperitoneal injection of isoproterenol]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:508-513. [PMID: 29972128 PMCID: PMC7389954 DOI: 10.7499/j.issn.1008-8830.2018.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/08/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To explore the feasibility of intraperitoneal injection of isoproterenol (ISO) to induce cardiac remodeling in FVB/N mice. METHODS Forty-eight FVB/N mice were divided into back subcutaneous saline group (subcutaneous saline group), intraperitoneal saline group, back subcutaneous ISO group (subcutaneous ISO group), and intraperitoneal ISO group according to the route of administration of saline or ISO. ISO (30 μg/g body weight/day) was given to the subcutaneous ISO group and the intraperitoneal ISO group, twice daily with an interval of 12 hours, for 14 consecutive days. The subcutaneous saline group and the intraperitoneal saline group were injected with an equal volume of saline. The left ventricular end-diastolic posterior wall thickness was measured by echocardiography, and the ratio of heart weight to tibia length was determined. Hematoxylin-eosin staining was used to determine the myocardial fiber diameter. Picric-sirius red staining was used to determine the myocardial collagen deposition area. Quantitative real-time PCR was used to measure the mRNA expression of collagen I. RESULTS Compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups, the intraperitoneal ISO group had increased sizes of the cardiac cavity and the heart. Compared with the subcutaneous saline and intraperitoneal saline groups, the subcutaneous ISO group showed no significant changes in the gross morphology of the cardiac cavity and the heart. The intraperitoneal ISO group showed significant increases in the ratio of heart weight to tibia length, myocardial fiber diameter, left ventricular end-diastolic posterior wall thickness, myocardial collagen area percentage, and the mRNA expression of collagen I compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups (P<0.01). There were no significant differences in the above five indices between the subcutaneous ISO group and the subcutaneous saline and intraperitoneal saline groups (P>0.05). No significant difference in the mortality rate was found between the subcutaneous ISO and intraperitoneal ISO groups (P>0.05). CONCLUSIONS Intraperitoneal injection of ISO can induce cardiac hypertrophy and fibrosis in FVB/N mice.
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Affiliation(s)
- Yong-Hua Yuan
- Department of Pediatric Cardiology, Hunan People's Hospital, Changsha 410005, China.
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