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Thejashwini PP, Chandrika R, Madhusudhan MC, Joshi SM, Ali D, Alarifi S, Jogaiah S, Geetha N. Psidium guajav-mediated zinc oxide nanoparticles as a multifunctional, microbicidal, antioxidant and antiproliferative agent against destructive pathogens. Bioprocess Biosyst Eng 2024:10.1007/s00449-024-03052-x. [PMID: 38935113 DOI: 10.1007/s00449-024-03052-x] [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: 05/16/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024]
Abstract
Bio-inspired zinc oxide nanoparticles are gaining immense interest due to their safety, low cost, biocompatibility, and broad biological properties. In recent years, much research has been focused on plant-based nanoparticles, mainly for their eco-friendly, facile, and non-toxic character. Hence, the current study emphasized a bottom-up synthesis of zinc oxide nanoparticles (ZnO NPs) from Psidium guajava aqueous leaf extract and evaluation of its biological properties. The structural characteristic features of biosynthesized ZnO NPs were confirmed using various analytical methods, such as UV-Vis spectroscopy, X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDX), Fourier transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS), Scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM). The synthesized ZnO NPs exhibited a hydrodynamic shape with an average particle size of 11.6-80.2 nm. A significant antimicrobial efficiency with minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of 40 and 27 µg/ml for Enterococcus faecalis, followed by 30 and 40 µg/ml for Staphylococcus aureus, 20 and 30 µg/ml for Staphylococcus mutans, 30 µg/ml for Candida albicans was observed by ZnO NPs. Additionally, they showed significant breakdown of biofilms of Streptococcus mutans and Candida albicans indicating their future value in drug-resistance research. Furthermore, an excellent dose-dependent activity of antioxidant property was noticed with an IC50 of 9.89 µg/ml. The antiproliferative potential of the ZnO NPs was indicated by the viability of MDA MB 231 cells, which showed a drastic decrease in response to increased concentrations of biosynthesized ZnO NPs. Thus, the present results open up vistas to explore their pharmaceutical potential for the development of targeted anticancer drugs in the future.
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Affiliation(s)
- P Prapula Thejashwini
- Nanobiotechnology Laboratory, DOS in Biotechnology, University of Mysore, Manasagangotri, Mysuru, 570006, Karnataka, India
| | - R Chandrika
- Nanobiotechnology Laboratory, DOS in Biotechnology, University of Mysore, Manasagangotri, Mysuru, 570006, Karnataka, India
| | - M C Madhusudhan
- Nanobiotechnology Laboratory, DOS in Biotechnology, University of Mysore, Manasagangotri, Mysuru, 570006, Karnataka, India
| | - Shreya M Joshi
- Department of Biotechnology, University of Agricultural Sciences, Dharwad, 580 005, India
| | - Daoud Ali
- Department of Zoology, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Saud Alarifi
- Department of Zoology, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Sudisha Jogaiah
- Department of Environmental Science, Central University of Kerala, Tejaswini Hills, Periye (P.O), Kasaragod, Kerala, 671316, India.
| | - Nagaraja Geetha
- Nanobiotechnology Laboratory, DOS in Biotechnology, University of Mysore, Manasagangotri, Mysuru, 570006, Karnataka, India.
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Mosaddad SA, Hussain A, Tebyaniyan H. Green Alternatives as Antimicrobial Agents in Mitigating Periodontal Diseases: A Narrative Review. Microorganisms 2023; 11:1269. [PMCID: PMC10220622 DOI: 10.3390/microorganisms11051269] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/26/2023] [Accepted: 05/09/2023] [Indexed: 06/03/2023] Open
Abstract
Periodontal diseases and dental caries are the most common infectious oral diseases impacting oral health globally. Oral cavity health is crucial for enhancing life quality since it serves as the entranceway to general health. The oral microbiome and oral infectious diseases are strongly correlated. Gram-negative anaerobic bacteria have been associated with periodontal diseases. Due to the shortcomings of several antimicrobial medications frequently applied in dentistry, the lack of resources in developing countries, the prevalence of oral inflammatory conditions, and the rise in bacterial antibiotic resistance, there is a need for reliable, efficient, and affordable alternative solutions for the prevention and treatment of periodontal diseases. Several accessible chemical agents can alter the oral microbiota, although these substances also have unfavorable symptoms such as vomiting, diarrhea, and tooth discoloration. Natural phytochemicals generated from plants that have historically been used as medicines are categorized as prospective alternatives due to the ongoing quest for substitute products. This review concentrated on phytochemicals or herbal extracts that impact periodontal diseases by decreasing the formation of dental biofilms and plaques, preventing the proliferation of oral pathogens, and inhibiting bacterial adhesion to surfaces. Investigations examining the effectiveness and safety of plant-based medicines have also been presented, including those conducted over the past decade.
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Affiliation(s)
- Seyed Ali Mosaddad
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran;
| | - Ahmed Hussain
- School of Dentistry, Edmonton Clinic Health Academy, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Hamid Tebyaniyan
- Science and Research Branch, Islimic Azade University, Tehran 14878-92855, Iran
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Alam A, Jawaid T, Alsanad SM, Kamal M, Balaha MF. Composition, Antibacterial Efficacy, and Anticancer Activity of Essential Oil Extracted from Psidium guajava (L.) Leaves. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12020246. [PMID: 36678958 PMCID: PMC9863818 DOI: 10.3390/plants12020246] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/12/2022] [Accepted: 12/23/2022] [Indexed: 06/01/2023]
Abstract
Essential oils (EO) are used as a natural remedy to treat various chronic diseases, although clinical evidence is lacking. In this context, we have endeavored to measure the percentage of chemical composition and biological efficacy of Psidium guajava (guava) leaf essential oil in treating oral infections and oral cancer. The essential oil obtained from hydrodistillation of P. guajava L. leaves was analyzed by gas chromatography−mass spectrometry (GC−MS). The activities of selected oral pathogens Candida albicans (C. albicans) and Streptococcus mutans (S. mutants) were studied in vitro and in silico. MTT assay was used to test for anticancer activity against human oral epidermal carcinoma (KB). GC−MS showed that the main components of PGLEO were limonene (38.01%) and β-caryophyllene (27.98%). Minimum inhibitory concentrations (MICs) of 0.05−0.1% were demonstrated against C. albicans and S. mutans. Antimicrobial activity against C. albicans and S. mutans, as shown by molecular linkage analysis, revealed that the main metabolites, limonene and β-caryophyllene, potentially inhibited the receptors of C. albicans and S. mutans. PGLEO showed significant (p < 0.001) anticancer activity (45.89%) at 200 µg/mL compared to doxorubicin (47.87%) with an IC50 value of 188.98 µg/mL. The outcomes of the present study suggest that PGLEO has promising antimicrobial and anticancer activities and could be a useful source for developing a natural therapeutic agent for oral infections and oral cancer.
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Affiliation(s)
- Aftab Alam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Talha Jawaid
- Department of Pharmacology, College of Medicine, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 13317, Saudi Arabia
| | - Saud M. Alsanad
- Department of Pharmacology, College of Medicine, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 13317, Saudi Arabia
| | - Mehnaz Kamal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Mohamed F. Balaha
- Department of Clinical Pharmacy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Pharmacology Department, Faculty of Medicine, Tanta University, Tanta 31527, Egypt
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Aly SH, Eldahshan OA, Al-Rashood ST, Binjubair FA, El Hassab MA, Eldehna WM, Dall’Acqua S, Zengin G. Chemical Constituents, Antioxidant, and Enzyme Inhibitory Activities Supported by In-Silico Study of n-Hexane Extract and Essential Oil of Guava Leaves. Molecules 2022; 27:molecules27248979. [PMID: 36558111 PMCID: PMC9781903 DOI: 10.3390/molecules27248979] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Psidium guajava (Guava tree) is one of the most widely known species in the family Myrtaceae. The Guava tree has been reported for its potential antioxidant, anti-inflammatory, antimicrobial, and cytotoxic activities. In the current study, the chemical compositions of the n-hexane extract and the essential oil of P. guajava were investigated using the GC/MS analysis, along with an evaluation of their antioxidant potential, and an investigation into the enzyme inhibition of acetylcholinesterase (AChE), butyrylcholinesterase (BchE), tyrosinase, α-amylase, and α-glucosidase. Moreover, molecular docking of the major identified active sites of the target enzymes were investigated. The chemical characterization of the n-hexane extract and essential oil revealed that squalene (9.76%), α-tocopherol (8.53%), and γ-sitosterol (3.90%) are the major compounds in the n-hexane extract. In contrast, the major constituents of the essential oil are D-limonene (36.68%) and viridiflorol (9.68%). The n-hexane extract showed more antioxidant potential in the cupric reducing antioxidant capacity (CUPRAC), the ferric reducing power (FRAP), and the metal chelating ability (MCA) assays, equivalent to 70.80 ± 1.46 mg TE/g, 26.01 ± 0.97 mg TE/g, and 24.83 ± 0.35 mg EDTAE/g, respectively. In the phosphomolybdenum (PM) assay, the essential oil showed more antioxidant activity equivalent to 2.58 ± 0.14 mmol TE/g. The essential oil demonstrated a potent BChE and tyrosinase inhibitory ability at 6.85 ± 0.03 mg GALAE/g and 61.70 ± 3.21 mg KAE/g, respectively. The α-amylase, and α-glucosidase inhibitory activity of the n-hexane extract and the essential oil varied from 0.52 to 1.49 mmol ACAE/g. Additionally, the molecular docking study revealed that the major compounds achieved acceptable binding scores upon docking with the tested enzymes. Consequently, the P. guajava n-hexane extract and oil can be used as a promising candidate for the development of novel treatment strategies for oxidative stress, neurodegeneration, and diabetes mellitus diseases.
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Affiliation(s)
- Shaza H. Aly
- Department of Pharmacognosy, Faculty of Pharmacy, Badr University in Cairo (BUC), Cairo 11829, Egypt
| | - Omayma A. Eldahshan
- Pharmacognosy Department, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
- Center for Drug Discovery Research and Development, Ain Shams University, Cairo 11566, Egypt
- Correspondence: (O.A.E.); (G.Z.)
| | - Sara T. Al-Rashood
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Faizah A. Binjubair
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mahmoud A. El Hassab
- Department of Medicinal Chemistry, Faculty of Pharmacy, King Salman International University (KSIU), South Sinai 46612, Egypt
| | - Wagdy M. Eldehna
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
- School of Biotechnology, Badr University in Cairo, Badr City, Cairo 11829, Egypt
| | - Stefano Dall’Acqua
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
| | - Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk University, Konya 42130, Turkey
- Correspondence: (O.A.E.); (G.Z.)
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Kokilananthan S, Bulugahapitiya VP, Manawadu H, Gangabadage CS. Sesquiterpenes and monoterpenes from different varieties of guava leaf essential oils and their antioxidant potential. Heliyon 2022; 8:e12104. [PMID: 36568663 PMCID: PMC9768318 DOI: 10.1016/j.heliyon.2022.e12104] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 11/05/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
Despite that Sri Lanka is a biodiversity hotspot with numerous guava varieties (Psidium guajava L.), no adequate scientific research has been reported on leaf essential oil (EO) composition based on varieties and its pharmacological properties, namely antioxidant properties. Therefore, this study focused to evaluate the chemical compositions and antioxidative capacity of EOs isolated from leaves of seven guava varieties grown in Sri Lanka, including apple-guava (P. pomiferum , PGA), common-guava (P. guaja v a , PGCG), two wild-guava; cultivar of P. guajava (PGG) and a cultivar of P. guineense (PGE), two introduced varieties of P. guajava (PGK and PGP), and one introduced variety of P. guineense (PGC). The EOs were isolated using hydro-distillation and the chemical compositions were analyzed using Gas Chromatography-Mass Spectrometry (GC-MS) technique, and the compounds that showed greater than 90% matching value were considered for characterization. The yields of EOs ranged from 0.02-0.26% (w/w) where PGE produced the greatest amount. About sixty-eight chemical compounds were identified from seven varieties and Sesquiterpenes were found to be the most abundant in the PGCG, PGG, PGE, and PGA varieties, whereas monoterpenes were found to be the most abundant in PGK, PGP, and PGC varieties. The sesquiterpenes, Nerolidol (70.0-7.9%), (-)-Globulol (21.0-7.0%), and Caryophyllene (20.4-1.4%) and monoterpenes, D-Limonene (30.3-14.1 %) were found as the major compounds of all studied guava varieties. Twenty-eight compounds were identified for the first time in guava EOs, including Cadinadiene-1,4, Benzylacetaldehyde, and Epiglobulol. The antioxidant efficacy of EOs varied from 329.56 ± 2.01 to 85.70 ± 2.01 μL Trolox Eq/L, where PGE showed the highest antioxidative potential. Ultimately, the chemical constituents and antioxidant capacity of isolated EOs varied with the variety, with EO from PGE leaves exerting an amazing antioxidant capacity compared to the others and being rich in Nerolidol. The findings of this study fill the gap in the literature on chemical constituents in the EO of guava leaves, and also it will open the avenue to discover novel potential compounds with outstanding pharmacological activities from guava leaves.
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Metal-organic framework on porous TiO 2 thin film-coated alumina beads for fractional distillation of plant essential oils. Anal Bioanal Chem 2022; 414:4809-4819. [PMID: 35583681 DOI: 10.1007/s00216-022-04103-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/17/2022] [Accepted: 04/26/2022] [Indexed: 11/01/2022]
Abstract
Fractionation of essential oils is technically challenging due to enormous scaffold diversities and structural complexities as well as difficulties in the implementation of the fractionation in the gas phase. Packing beads with multi-dimensional hierarchical nanostructures have been developed herein to pack fractional columns for atmospheric distillations. Activated alumina beads were coated with a porous TiO2 thin film. Growth of Cu-BTC (benzene-1,3,5-tricarboxylate) crystals in resultant porous surfaces leads to the generation of new nanopores and increased metal centers for differential coordination with diverse components of essential oils. The TiO2 thin film is not only an integral part of the composites but also induces the oriented growth of Cu-BTC metal organic framework (MOF) crystals through coordinative interactions. These Al2O3@TiO2@Cu-BTC MOF beads show very strong absorptive capability for major components of essential oils, except for a single cyclic ether eucalyptol with steric hindrances. The eucalyptol was fractionated by using the column packed with those modified alumina beads from raw materials of Artemisia argyi, and Rosmarinus officinalis with high purities up to 96% and 93%, respectively.
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Bezerra JN, Gomez MCV, Rolón M, Coronel C, Almeida-Bezerra JW, Fidelis KR, Menezes SAD, Cruz RPD, Duarte AE, Ribeiro PRV, Brito ESD, Coutinho HDM, Morais-Braga MFB, Bezerra CF. Chemical composition, Evaluation of Antiparasitary and Cytotoxic Activity of the essential oil of Psidium brownianum MART EX. DC. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2021.102247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Jhaiaun P, Panthawong A, Sukkanon C, Chareonviriyaphap T. Avoidance Behavior to Guava Leaf Volatile Oil by Three Medically Important Mosquito Vectors. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:2534-2542. [PMID: 34665255 DOI: 10.1093/jee/toab193] [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: 07/02/2021] [Indexed: 06/13/2023]
Abstract
Volatile organic compounds from various plants have received popular interest as one of the vector control tools due to their eco-friendliness and insect-repellent activities. In this study, an excito-repellency assay system was used to examine the noncontact repellency, contact excitation, and knockdown (KD) effects of guava leaf (Psidium guajava L.) oil against Anopheles minimus (Theobald), Anopheles epiroticus (Linton & Harbach), and Culex quinquefasciatus (Say). The organic components of guava oil were identified by gas chromatography-mass spectrometry analysis with dl-limonene (17.4%), cymene (5.49%), and α-terpinene (5.20%) as the major constituents. At concentrations of 2.5 and 5.0%, 100% escape of An. minimus was recorded in the contact assay and 96-98% escape in the noncontact assay. Guava oil stimulated potent irritant (92% escape) and repellent (61-86% escape) effects against Cx. quinquefasciatus. A lower repellency action was observed against An. epiroticus (17-20% escape). No KD effect was observed for guava oil against An. minimus and Cx. quinquefasciatus at any concentration. However, An. epiroticus was more prone to KD effects, with the highest percentage KD (44% in nonescape group) observed with 5.0% guava oil in the noncontact assay. Mortalities of 35% and 11% were observed for An. epiroticus in the nonescape groups in the contact and noncontact assays, respectively. Concentrations of 1.0% and 2.5% guava oil led to <2% mortality in An. minimus. Our findings highlight guava oil as a promising plant-based mosquito repellent that can be included in insecticide formulations for future mosquito control programs.
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Affiliation(s)
- Pairpailin Jhaiaun
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand
| | - Amonrat Panthawong
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand
| | - Chutipong Sukkanon
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
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Ferreira Macedo JG, Linhares Rangel JM, de Oliveira Santos M, Camilo CJ, Martins da Costa JG, Maria de Almeida Souza M. Therapeutic indications, chemical composition and biological activity of native Brazilian species from Psidium genus (Myrtaceae): A review. JOURNAL OF ETHNOPHARMACOLOGY 2021; 278:114248. [PMID: 34058313 DOI: 10.1016/j.jep.2021.114248] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/07/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL IMPORTANCE Brazilian medicinal species of the Psidium genus are rich in secondary metabolites such as terpenes and phenolic compounds and present biological activities for several human diseases. For the native Psidium species, there are no specific research reports for any member of the genus about ethnobotanical research, hindering the joint analysis of its therapeutic indications together with the scientific evidence already investigated. STUDY OBJECTIVE Analyze the therapeutic indications, the main chemical constituents, and the biological activities of native species of the Psidium to Brazil. MATERIALS AND METHODS Systematic research was carried out in the Scopus, ScienceDirect, PubMed, and Web of Science databases over a period of ten years. Articles in English, Portuguese and Spanish were used. The research was divided into three phases, seeking information on ethnobotany, chemical composition and biological activities. The words were combined to structure the descriptors used in the search. RESULTS A total of 13 native species belonging to the Psidium genus were identified in this analysis, Psidium acutangulum DC., Psidium brownianum Mart. ex DC., Psidium cattleyanum Sabine, Psidium densicomum Mart. ex DC., Psidium grandifolium Mart. ex DC., Psidium guineense Sw., Psidium laruotteanum Cambess., Psidium myrsinites DC, Psidium myrtoides O. Berg, Psidium salutare (Kunth) O. Berg, Psidium schenckianum Kiaersk., Psidium sobralianum Proença & Landrum, Psidium striatulum Mart. ex DC. Of these, six were indicated in folk medicine, digestive system disorders being their main therapeutic indication. Most species presented an investigation of chemical composition and biological activity. They are rich in phenolic compounds, flavonoids, and terpenes and have antimicrobial, antioxidant, antiproliferative, and repellent activities. CONCLUSIONS Native species of the Psidium genus are important sources of active ingredients in combating adversities that affect the human health, especially regarding the digestive system. They have a rich chemical composition, responsible for the biological activities demonstrated for the species.
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Affiliation(s)
| | - Juliana Melo Linhares Rangel
- Laboratório de Ecologia Vegetal, Universidade Regional Do Cariri, Departamento de Ciências Biológicas, 63105-000, Crato, CE, Brazil.
| | - Maria de Oliveira Santos
- Laboratório de Ecologia Vegetal, Universidade Regional Do Cariri, Departamento de Ciências Biológicas, 63105-000, Crato, CE, Brazil.
| | - Cicera Janaine Camilo
- Laboratório de Pesquisa de Produtos Naturais, Universidade Regional Do Cariri, Departamento de Química Biológica, 63105-000, Crato, CE, Brazil.
| | - José Galberto Martins da Costa
- Laboratório de Pesquisa de Produtos Naturais, Universidade Regional Do Cariri, Departamento de Química Biológica, 63105-000, Crato, CE, Brazil.
| | - Marta Maria de Almeida Souza
- Laboratório de Ecologia Vegetal, Universidade Regional Do Cariri, Departamento de Ciências Biológicas, 63105-000, Crato, CE, Brazil.
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Zhang F, Ramachandran G, Mothana RA, Noman OM, Alobaid WA, Rajivgandhi G, Manoharan N. Anti-bacterial activity of chitosan loaded plant essential oil against multi drug resistant K. pneumoniae. Saudi J Biol Sci 2020; 27:3449-3455. [PMID: 33304155 PMCID: PMC7715482 DOI: 10.1016/j.sjbs.2020.09.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/10/2020] [Accepted: 09/10/2020] [Indexed: 12/20/2022] Open
Abstract
The development of antibiotic resistant in K. pneumoniae is an emerging thread worldwide due to the poor antimicrobial drugs. To overcome this issue, researchers are focused on plant material and their essential oils to fight against multi drug resistant bacteria. In this context, the current study was concentrated in medicinal plant of guva leaves and their essential oils to combat multi drug resistant bacterial infections. The essential oils were successfully screened and confirmed by HRLC-MS analysis. The anti-bacterial ability of the compounds were loaded into the chitosan nanoparticles and proved by FT-IR analysis. In addition, the chitosan loaded essential oils morphology was compared with chitosan alone in SEM analysis and suggested that the material was loaded successfully. Further, the anti-bacterial ability of the chitosan loaded essential oils were primarily confirmed by agar well diffusion method. At the 100 µg/mL of lowest concentration of chitosan loaded essential oils, the multi-drug resistant K. pneumoniae was inhibited with 96% and confirmed by minimum inhibition concentration experiment. Hence, all the experiments were proved that the essential oils were successfully loaded into the chitosan nanoparticles, and it has more anti-bacterial activity against multi-drug resistant K. pneumoniae.
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Affiliation(s)
- Feng Zhang
- Chest Endoscopy Minimally Invasive Area, Shandong Provincial Chest Hospital, Shandong Province 250013, China
| | - G Ramachandran
- Department of Marine Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India
| | - Ramzi A Mothana
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. BOX 2457, Riyadh 11451, Saudi Arabia
| | - Omar M Noman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. BOX 2457, Riyadh 11451, Saudi Arabia
| | - Waleed A Alobaid
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. BOX 2457, Riyadh 11451, Saudi Arabia
| | - G Rajivgandhi
- Department of Marine Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India
| | - N Manoharan
- Department of Marine Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India
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Yaqoob Z, Arshad MS, Khan MK, Imran M, Ahmad MH, Ahmad S, Nisa MU, Anjum FM, Khan U, Khalid W, Suleria HAR. Ultrasound-assisted extraction of guava and papaya leaves for the development of functional shrimp patties. Food Sci Nutr 2020; 8:3923-3935. [PMID: 32724653 PMCID: PMC7382107 DOI: 10.1002/fsn3.1706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 05/16/2020] [Accepted: 05/19/2020] [Indexed: 11/07/2022] Open
Abstract
The current study was aimed to evaluate the effects of guava and papaya leaves extract on the antioxidant profile and their outcomes in the storage stability of shrimp patties. Total of seven treatments were prepared by employing guava leaf extract (GLE) and papaya leaf extract (PLE) including control. Both the extracts were employed in the concentration of 1% and 2% each and in combination as 1:1% and 2:2%, respectively. The shrimp patties were kept in ziplock bags at refrigeration temperature, and further analysis was done after 21 days of storage period with intermittent evaluation interval of 7 days. The antioxidant capability of functional shrimp patties was determined by total phenolic content (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and ferric reducing antioxidant power (FRAP). Higher significant values of TPC, DPPH, and FRAP were observed in the functional shrimp patties enriched with GLE2%:PLE2% at start of the experiment. The physicochemical parameters were observed by hunter color, TVBN, TBARS, and peroxide value (POV). Higher significant values of TVBN, TBARS, and peroxide were observed in the control samples as compared to treatment group GLE2%:PLE2%. The bacterial counts were also higher in control samples as compared to the treatment group GLE2%:PLE2%. The sensorial attributes were observed regarding appearance, taste, texture, odor, and overall acceptability. The maximum scores related all parameters were gathered by control group but significantly lower scores were for the group GLE2%:PLE2%. In conclusion, functional shrimp patties enriched with GLE2%:PLE2% showed better antioxidant capacity, stability, and sensory characteristics during storage.
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Affiliation(s)
- Zubda Yaqoob
- Institute of Home and Food SciencesGovernment College UniversityFaisalabadPakistan
| | | | - Muhammad Kamran Khan
- Institute of Home and Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Muhammad Imran
- Institute of Home and Food SciencesGovernment College UniversityFaisalabadPakistan
| | | | - Sheraz Ahmad
- Department of Food ScienceFaculty of BiosciencesCholistan University of Veterinary and Animal SciencesBahawalpurPakistan
| | - Mehr un Nisa
- Institute of Home and Food SciencesGovernment College UniversityFaisalabadPakistan
| | | | - Urooj Khan
- Institute of Home and Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Waseem Khalid
- Institute of Home and Food SciencesGovernment College UniversityFaisalabadPakistan
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Bazioli JM, Costa JH, Shiozawa L, Ruiz ALTG, Foglio MA, Carvalho JED. Anti-Estrogenic Activity of Guajadial Fraction, from Guava Leaves ( Psidium guajava L.). Molecules 2020; 25:E1525. [PMID: 32230839 PMCID: PMC7181212 DOI: 10.3390/molecules25071525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/11/2020] [Accepted: 03/17/2020] [Indexed: 12/21/2022] Open
Abstract
The research of natural products has allowed for the discovery of biologically relevant compounds inspired by plant secondary metabolites, which contributes to the development of many chemotherapeutic drugs used in cancer treatment. Psidium guajava leaves present a diverse phytochemical composition including flavonoids, phenolics, meroterpenoids, and triterpenes as the major bioactive constituents. Guajadial, a caryophyllene-based meroterpenoid, has been studied for potential anticancer effects tested in tumor cells and animal experimental models. Moreover, guajadial has been reported to have a mechanism of action similar to tamoxifen, suggesting this compound as a promisor phytoestrogen-based therapeutic agent. Herein, the anti-estrogenic action and anti-proliferative activity of guajadial is reported. The enriched guajadial fraction was obtained by sequential chromatographic techniques from the crude P. guajava dichloromethane extract showing promising anti-proliferative activity in vitro with selectivity for human breast cancer cell lines MCF-7 and MCF-7 BUS (Total Growth Inhibition = 5.59 and 2.27 µg·mL-1, respectively). Furthermore, evaluation of anti-estrogenic activity in vivo was performed demonstrating that guajadial enriched fraction inhibited the proliferative effect of estradiol on the uterus of pre-pubescent rats. These results suggest a relationship between anti-proliferative and anti-estrogenic activity of guajadial, which possibly acts in tumor inhibition through estrogen receptors due to the compounds structural similarity to tamoxifen.
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Affiliation(s)
- Jaqueline Moraes Bazioli
- Faculty of Pharmaceutical Sciences, University of Campinas, 13083-859 Campinas, SP, Brazil
- Institute of Chemistry, University of Campinas, P.O.Box 6154, 13083-970 Campinas, SP, Brazil
| | - Jonas Henrique Costa
- Institute of Chemistry, University of Campinas, P.O.Box 6154, 13083-970 Campinas, SP, Brazil
| | - Larissa Shiozawa
- Faculty of Pharmaceutical Sciences, University of Campinas, 13083-859 Campinas, SP, Brazil
- Postgraduate program in Dentistry, Piracicaba Dental School, University of Campinas, 13 414-903, Piracicaba, SP, Brazil
| | | | - Mary Ann Foglio
- Faculty of Pharmaceutical Sciences, University of Campinas, 13083-859 Campinas, SP, Brazil
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Naseer S, Hussain S, Naeem N, Pervaiz M, Rahman M. The phytochemistry and medicinal value of Psidium guajava (guava). CLINICAL PHYTOSCIENCE 2018. [DOI: 10.1186/s40816-018-0093-8] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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de Macêdo DG, Souza MMA, Morais-Braga MFB, Coutinho HDM, Dos Santos ATL, da Cruz RP, da Costa JGM, Rodrigues FFG, Quintans-Junior LJ, da Silva Almeida JRG, de Menezes IRA. Effect of seasonality on chemical profile and antifungal activity of essential oil isolated from leaves Psidium salutare (Kunth) O. Berg. PeerJ 2018; 6:e5476. [PMID: 30402343 PMCID: PMC6215697 DOI: 10.7717/peerj.5476] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 07/30/2018] [Indexed: 01/12/2023] Open
Abstract
Medicinal plants play a crucial role in the search for components that are capable of neutralizing the multiple mechanisms of fungal resistance. Psidium salutare (Kunth) O. Berg is a plant native to Brazil used as both food and traditional medicine to treat diseases and symptoms such as stomach ache and diarrhea, whose symptoms could be related to fungal infections from the genus Candida. The objective of this study was to investigate the influence of seasonal variability on the chemical composition of the Psidium salutare essential oil, its antifungal potential and its effect on the Candida albicans morphogenesis. The essential oils were collected in three different seasonal collection periods and isolated by the hydrodistillation process in a modified Clevenger apparatus with identification of the chemical composition determined by gas chromatography coupled to mass spectrometry (GC/MS). The antifungal assays were performed against Candida strains through the broth microdilution method to determine the minimum fungicidal concentration (MFC). Fungal growth was assessed by optical density reading and the Candida albicans dimorphic effect was evaluated by optical microscopy in microculture chambers. The chemical profile of the essential oils identified 40 substances in the different collection periods with γ-terpinene being the predominant constituent. The antifungal activity revealed an action against the C. albicans, C. krusei and C. tropicalis strains with an IC50 ranging from 345.5 to 2,754.2 µg/mL and a MFC higher than 1,024 µg/mL. When combined with essential oils at sub-inhibitory concentrations (MIC/16), fluconazole had its potentiated effect, i.e. a synergistic effect was observed in the combination of fluconazole with P.salutare oil against all Candida strains; however, for C. albicans, its effect was reinforced by the natural product in all the collection periods. The results show that the Psidium salutare oil affected the dimorphic transition capacity, significantly reducing the formation of hyphae and pseudohyphae in increasing concentrations. The results show that P. salutare oil exhibits a significant antifungal activity against three Candida species and that it can act in synergy with fluconazole. These results support the notion that this plant may have a potential use in pharmaceutical and preservative products.
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Affiliation(s)
- Delmacia G de Macêdo
- Department of Biological Sciences, Regional University of Cariri, Crato, Ceara, Brazil
| | - Marta Maria A Souza
- Department of Biological Sciences, Regional University of Cariri, Crato, Ceara, Brazil
| | | | | | | | - Rafael P da Cruz
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
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Ortega JT, Estrada O, Serrano ML, Contreras W, Orsini G, Pujol FH, Rangel HR. Glycosylated Flavonoids from Psidium guineense as Major Inhibitors of HIV-1 Replication in vitro. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Flavonoids are present in practically all plants and many biological activities have been described for them. The flavonoid quercetin is a common molecule for which anti-HIV activity has been demonstrated. Avicularin and guajaverin are derivatives of quercetin with a glycoside substituent in their structure. In this work, a mixture of both derivatives was purified from an extract of Psidium guinense. The mixture exhibited activity against HIV-1 in vitro, with an IC50 of approximately 8.5 μg/mL, which compares favorably with the IC50 of 53 μg/mL of quercetin. The mixture also inhibited HIV-1 reverse transcriptase (RT), with an IC50 of 7.2 μM, compared to 0.6 μM for quercetin. These results are in agreement with the in silico prediction for the interaction of these flavonoids with RT and suggest that the glycosylic moiety could favor the transport of the compound into the cell. However, the glycosidic moiety might be cleaved intracellularly, being the resultant quercetin responsible for the antiviral activity.
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Affiliation(s)
- Joseph T Ortega
- Laboratorio de Virología Molecular, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - Omar Estrada
- Laboratorio de Fisiología Celular, Instituto Venezolano de Investigaciones Científicas
| | - Maria L Serrano
- Unidad de Química Medicinal. Facultad de Farmacia, Universidad Central de Venezuela
| | - Whendy Contreras
- Laboratorio de Fisiología Celular, Instituto Venezolano de Investigaciones Científicas
| | - Giovannina Orsini
- Herbario V.M. Ovalles (MYF), Facultad de Farmacia, Universidad Central de Venezuela JTO and OE contributed equally to the study
| | - Flor H Pujol
- Laboratorio de Virología Molecular, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - Héctor R Rangel
- Laboratorio de Virología Molecular, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
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Tashakori-Sabzevar F, Ramezani M, Hosseinzadeh H, Parizadeh SMR, Movassaghi AR, Ghorbani A, Mohajeri SA. Protective and hypoglycemic effects of celery seed on streptozotocin-induced diabetic rats: experimental and histopathological evaluation. Acta Diabetol 2016; 53:609-19. [PMID: 26940333 DOI: 10.1007/s00592-016-0842-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 01/16/2016] [Indexed: 01/06/2023]
Abstract
AIMS Diabetes mellitus is a major manifestation of metabolic disorder which presents with hyperglycemia (high levels of serum blood sugar). In the present study, we aimed to investigate the effects of celery seed extract on different biochemical factors and histopathological changes in normal and streptozotocin (STZ)-induced diabetic rats. METHODS A total of 35 male Wistar rats were divided into five groups (one normal and four diabetic groups). STZ was injected intraperitoneally to induce diabetes. The effects of hexane extract of celery seed and glibenclamide (as a positive control) were compared. Blood samples were analyzed on days 0, 18, and 33, and histopathological evaluations were performed at the end of the study. RESULTS Glucose, triglycerides, and cholesterol levels significantly decreased, whereas insulin and high-density lipoprotein (HDL) levels increased in the extract-administered groups, as compared to the negative diabetic control group (P < 0.0001). The concentrations of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in serum of the extract-administered groups were significantly less than the negative control group (P < 0.0001). Histopathological reports revealed significantly less atrophy, necrosis, and inflammation in the rats receiving celery seed extract compared to the negative control group. CONCLUSIONS The results indicated that celery seed extract can be effective in controlling hyperglycemia and hyperlipidemia in diabetic rats, and demonstrated its protective effects against pancreatic toxicity resulting from STZ-induction.
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Affiliation(s)
| | - Masoud Ramezani
- Student Research Committee (SRC), Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Ahmad Reza Movassaghi
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Ahmad Ghorbani
- Pharmacological Research Center of Medicinal Plants, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Ahmad Mohajeri
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Suman TY, Rajasree SRR, Jayaseelan C, Mary RR, Gayathri S, Aranganathan L, Remya RR. GC-MS analysis of bioactive components and biosynthesis of silver nanoparticles using Hybanthus enneaspermus at room temperature evaluation of their stability and its larvicidal activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:2705-2714. [PMID: 26438369 DOI: 10.1007/s11356-015-5468-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
Green synthesis of silver nanoparticles (AgNPs) using Hybanthus enneaspermus extract at room temperature that act as a reducing agent as well as capping agent has been investigated. The synthesized AgNPs were characterized by UV-visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR), zeta potential, and dynamic light scattering (DLS) transmission electron microscopy (TEM) and energy-dispersive X-ray (EDX). The silver surface plasmon resonance was observed at 420 nm in the UV-visible spectrum. XRD peaks were observed at 2θ values in 38.20°, 44.40°, 64.60°, and 77.50° which are indexed as (111), (200), (220), and (311) bands of face-centered cubic (fcc) structures of silver. FTIR revealed the AgNPs were capped with plant compounds of alcohol, phenols, carbonyl, amines, and amide functional groups. TEM image shows that the particles were of spherical, hexagonal, and triangular in shape, and the size range was 16-26 nm. Further, DLS exhibits the average size of 25.2 nm and the zeta values were measured (-27.1 mV) which proves the stability of the AgNPs. The conversion of Ag(+) ions into Ag(0) was calculated using inductively coupled plasma atomic emission spectroscopy (ICP-MS) and was found to be 96 %. The biosynthesized AgNPs showed the larvicidal activity with the LC50 values of 17.24 and 13.12 mg/L against the fourth-instar larvae of Anopheles subpictus and Culex quinquefasciatus, respectively. The GC-MS analysis of the plant extract showed that 39 bioactive phytochemical compounds have been found to possess a wide range of activities, which may help in the protection against incurable diseases.
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Affiliation(s)
- T Y Suman
- Centre for Ocean Research (NIOT-SU Collaborative Research Centre), Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai, Tamil Nadu, 600 119, India
| | - S R Radhika Rajasree
- Centre for Ocean Research (NIOT-SU Collaborative Research Centre), Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai, Tamil Nadu, 600 119, India.
| | - C Jayaseelan
- Division of Nanobiotechnology, Department of Zoology, Auxilium College (Autonomous), Vellore, Tamil Nadu, 632006, India
| | - R Regina Mary
- Division of Nanobiotechnology, Department of Zoology, Auxilium College (Autonomous), Vellore, Tamil Nadu, 632006, India
| | - S Gayathri
- Centre for Ocean Research (NIOT-SU Collaborative Research Centre), Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai, Tamil Nadu, 600 119, India
| | - L Aranganathan
- Centre for Ocean Research (NIOT-SU Collaborative Research Centre), Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai, Tamil Nadu, 600 119, India
| | - R R Remya
- Centre for Ocean Research (NIOT-SU Collaborative Research Centre), Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai, Tamil Nadu, 600 119, India
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Shewamene Z, Abdelwuhab M, Birhanu Z. Methanolic leaf exctract of Otostegia integrifolia Benth reduces blood glucose levels in diabetic, glucose loaded and normal rodents. Altern Ther Health Med 2015; 15:19. [PMID: 25886912 PMCID: PMC4321712 DOI: 10.1186/s12906-015-0535-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 01/19/2015] [Indexed: 11/12/2022]
Abstract
Background Although the leaves of Otostegia integrifolia traditionally claimed in Ethiopian folklore medicine for management of diabetes mellitus, it has not been validated. The aim of this study was therefore to investigate the antidiabetic activity of Otostegia integrifolia in rodents. Methods Male rats or mice were randomly divided into five groups for diabetic, hypoglycemic and glucose tolerance test (OGTT) studies. In all models, group I received Tween 80, 2% v/v, Group II (GL5) treated with 5 mg/kg of glibenclamide and the remaining group: III, IV and V were given the plant extract at doses of 100 mg/kg 200 mg/kg and 400 mg/kg respectively. Blood glucose levels (BGL) were measured by collecting blood samples at different time points. Data was analyzed using one way ANOVA followed by Dunnet’s post hoc test to carry out between and within group comparisons. P < 0.05 was considered as statistically significant. Results Inter-group analysis revealed that O. integrifolia at 100 mg/kg and 200 mg/kg reduced the 4th hour fasting blood BGL significantly (p < 0.001) compared to the control group. The intra-group analysis result has shown O. integrifolia at 200 mg/kg produced a significant (p < 0.05) reduction in BGL at the 1st, 2nd, 3rd and 4th hours of post treatment compared to their respective initial levels. Moreover, in the hypoglycemic and OGTT models, O. integrifolia extract at 200 mg/kg, has shown a significant reduction in blood glucose levels compared to negative controls and across all time points. Conclusion The crude extract of O. integrifolia has shown significant antidiabetic, hypoglyceamic and oral glucose tolerating effects. The effective dose of the extract was found to be 200 mg/kg in time dependent manner.
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Poopathi S, De Britto LJ, Praba VL, Mani C, Praveen M. Synthesis of silver nanoparticles from Azadirachta indica--a most effective method for mosquito control. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:2956-63. [PMID: 25226837 DOI: 10.1007/s11356-014-3560-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 09/03/2014] [Indexed: 05/13/2023]
Abstract
Mosquitoes transmit major communicable diseases such as dengue, malaria, filariasis, Japanese encephalitis, chikungunya, and so on. Vector control is important in epidemic disease situations as there is an urgent need to develop new and improved mosquito control methods that are economical and effective yet safe for non-targeted organisms. In the present study, silver nanoparticles (AgNPs) were synthesized from the aqueous leaf extract of neem plant (Azadirachta indica), and their effects on mosquito vectors (Aedes aegypti and Culex quinquefasciatus) were assessed. The synthesised AgNPs were characterized by UV-vis spectroscopy, scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction analysis (XRD). The nanoparticles have maximum absorption at 442 ± 1.5 nm with an average size of 41-60 nm. The XRD data showed six well-defined diffraction peaks, corresponding to a relative intensity of the crystal structure of metallic silver 36.42, 100.00, 53.70, 14.20, 16.05, and 6.79, respectively. The FT-IR data showed strong prominent peaks in different ranges, reflecting its complex nature. The mosquito larvae were exposed to varying concentrations of AgNPs synthesized from the neem leaves under investigation (0.07-25 mg/l) for 24 h; this revealed larvicidal activity of AgNPs with LC50 and LC90 values of 0.006 and 0.04 mg/l for A. aegypti, respectively. Further, the LC50 and LC90 values were also identified as 0.047 and 0.23 mg/l for Cx. quinquefasciatus, respectively. The result obtained from this study presents biosynthesized silver nanoparticle from A. indica as the biolarvicidal agent with the most potential for mosquito control.
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Affiliation(s)
- Subbiah Poopathi
- Unit of Microbiology and Immunology, Vector Control Research Centre (Indian Council of Medical Research), Indira Nagar, Puducherry, 605 006, India,
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Surajbhan S, Alka S, Chetan J, Lambert R. Extraction and Optimization of Guava Juice by Using Response Surface Methodology. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/ajft.2012.326.339] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Troncoso C, Becerra J, Perez C, Hernandez V, Martin AS, Sanchez-Olate M, Rios D. Induction of Defensive Responses in <i>Eucalyptus globulus</i> (Labill) Plants, against <i>Ctenarytaina eucalypti</i> (Maskell) (Hemiptera: Psyllidae). ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ajps.2012.35071] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Joseph B, Priya RM. Bioactive Compounds from Endophytes and their Potential in Pharmaceutical Effect: A Review. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ajbmb.2011.291.309] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sanda K, Grema H, Geidam Y, Bukar-Kolo Y. Pharmacological Aspects of Psidium guajava: An Update. INT J PHARMACOL 2011. [DOI: 10.3923/ijp.2011.316.324] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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