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El-Sayied Ali S, El-Ghannam G, Hashish MES, Elsayed H, Ali AK, Marzouk WM, Khattaby AM, El-Wahab AMA, Abdel-Hafez SH, Attia Attia Y. Exploring bee venom and silver nanoparticles for controlling foulbrood pathogen and enhancing lifespan of honeybees. Sci Rep 2024; 14:19013. [PMID: 39152125 PMCID: PMC11329661 DOI: 10.1038/s41598-024-67515-7] [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: 10/31/2023] [Accepted: 07/11/2024] [Indexed: 08/19/2024] Open
Abstract
The beekeeping industry plays a crucial role in local economies, contributing significantly to their growth. However, bee colonies often face the threat of American foulbrood (AFB), a dangerous disease caused by the Gram-positive bacterium Paenibacillus larvae (P. l.). While the antibiotic Tylosin has been suggested as a treatment, its bacterial resistance necessitates the search for more effective alternatives. This investigation focused on evaluating the potential of bee venom (BV) and silver nanoparticles (Ag NPs) as antibacterial agents against AFB. In vitro treatments were conducted using isolated AFB bacterial samples, with various concentrations of BV and Ag NPs (average size: 25nm) applied individually and in combination. The treatments were administered under both light and dark conditions. The viability of the treatments was assessed by monitoring the lifespans of treated bees and evaluating the treatment's efficiency within bee populations. Promising results were obtained with the use of Ag NPs, which effectively inhibited the progression of AFB. Moreover, the combination of BV and Ag NPs, known as bee venom/silver nanocomposites (BV/Ag NCs), significantly extended the natural lifespan of bees from 27 to 40 days. Notably, oral administration of BV in varying concentrations (1.53, 3.12, and 6.25 mg/mL) through sugary syrup doubled the bees' lifespan compared to the control group. The study established a significant correlation between the concentration of each treatment and the extent of bacterial inhibition. BV/Ag NCs demonstrated 1.4 times greater bactericidal efficiency under photo-stimulation with visible light compared to darkness, suggesting that light exposure enhances the effectiveness of BV/Ag NCs. The combination of BV and Ag NPs demonstrated enhanced antibacterial efficacy and prolonged honeybee lifespan. These results offer insights that can contribute to the development of safer and more efficient antibacterial agents for maintaining honeybee health.
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Affiliation(s)
- Sawsan El-Sayied Ali
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
- Bee Research Department (BRD), Agriculture Research Center (ARC), Plant Protection Research Institute (PPRI), Giza, 12619, Egypt
| | - Gamal El-Ghannam
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
| | - Mohamed El-Sayied Hashish
- Bee Research Department (BRD), Agriculture Research Center (ARC), Plant Protection Research Institute (PPRI), Giza, 12619, Egypt
| | - Hassan Elsayed
- Department of Microbial Biotechnology, Biotechnology Research Institute, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Ahmed Kamel Ali
- Bee Research Department (BRD), Agriculture Research Center (ARC), Plant Protection Research Institute (PPRI), Giza, 12619, Egypt
| | - Wael Mahmoud Marzouk
- Bee Research Department (BRD), Agriculture Research Center (ARC), Plant Protection Research Institute (PPRI), Giza, 12619, Egypt
| | - Ahmed Mahmoud Khattaby
- Bee Research Department (BRD), Agriculture Research Center (ARC), Plant Protection Research Institute (PPRI), Giza, 12619, Egypt
| | | | - Shams H Abdel-Hafez
- Department of Chemistry, College of Science, Taif University, 21944, Taif, Saudi Arabia
| | - Yasser Attia Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt.
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Comi G, Colautti A, Bernardi CEM, Stella S, Orecchia E, Coppola F, Iacumin L. Leuconostoc gelidum Is the Major Species Responsible for the Spoilage of Cooked Sausage Packaged in a Modified Atmosphere, and Hop Extract Is the Best Inhibitor Tested. Microorganisms 2024; 12:1175. [PMID: 38930557 PMCID: PMC11206102 DOI: 10.3390/microorganisms12061175] [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: 05/14/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Cooked sausages packaged in a modified atmosphere (MAP: 20% CO2, 70% N2, <0.2% O2) with evident yellow stains were analyzed. The aims of this work were to study the microbial cause of the spoilage and to evaluate different antimicrobial compounds to prevent it. Leuconostoc gelidum was identified as the primary cause of the yellow coating in spoiled cooked sausage, as confirmed by its intentional inoculation on slices of unspoiled sausage. Leuconostoc gelidum was the main bacteria responsible for the yellow coating in spoiled cooked sausage, as confirmed by its intentional inoculation on slices of unspoiled sausage. The yellow color was also evident during growth in the model system containing cooked sausage extract, but the colonies on MRS agar appeared white, demonstrating that the food substrate stimulated the production of the yellow pigment. The spoilage was also characterized by different volatile compounds, including ketones, ethanol, acetic acid, and ethyl acetate, found in the spoiled cooked sausage packages. These compounds explained the activity of Leuc. gelidum because they are typical of heterofermentative LAB, cultivated either on food substrates or in artificial broths. Leuc. gelidum also produced slight swelling in the spoiled packages. The efficacy of different antimicrobials was assessed in model systems composed of cooked sausage extract with the antimicrobials added at food product concentrations. The data showed that sodium lactate, sodium acetate, and a combination of sodium lactate and sodium diacetate could only slow the growth of the spoiler-they could not stop it from occurring. Conversely, hop extract inhibited Leuc. gelidum, showing a minimal inhibitory concentration (MIC) of approximately 0.008 mg CAE/mL in synthetic broth and 4 mg CAE/kg in cooked sausage slices. Adding hop extract at the MIC did not allow Leuc. gelidum growth and did not change the sensorial characteristics of the cooked sausages. To our knowledge, this is the first report of the antimicrobial activities of hop extracts against Leuc. gelidum either in vitro or in vivo.
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Affiliation(s)
- Giuseppe Comi
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Via Sondrio 2/a, 33100 Udine, Italy; (A.C.); (E.O.); (L.I.)
| | - Andrea Colautti
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Via Sondrio 2/a, 33100 Udine, Italy; (A.C.); (E.O.); (L.I.)
| | - Cristian Edoardo Maria Bernardi
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell’Università 6, 26900 Lodi, Italy; (C.E.M.B.); (S.S.)
| | - Simone Stella
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell’Università 6, 26900 Lodi, Italy; (C.E.M.B.); (S.S.)
| | - Elisabetta Orecchia
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Via Sondrio 2/a, 33100 Udine, Italy; (A.C.); (E.O.); (L.I.)
| | - Francesca Coppola
- Food Sciences Institute, National Research Council, Via Roma, 64, 83100 Avellino, Italy;
| | - Lucilla Iacumin
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Via Sondrio 2/a, 33100 Udine, Italy; (A.C.); (E.O.); (L.I.)
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Tlak Gajger I, Tomljanović Z, Mutinelli F, Granato A, Vlainić J. Effects of Disinfectants on Bacterium Paenibacillus larvae in Laboratory Conditions. INSECTS 2024; 15:268. [PMID: 38667398 PMCID: PMC11050086 DOI: 10.3390/insects15040268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/08/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024]
Abstract
American foulbrood is an infectious disease of the honeybee brood that causes multiple types of damage to beekeeping. The causative agent of the disease is the bacterium Paenibacillus larvae, which forms resistant infective spores and is viable for decades. After the eradication measures have been implemented, in cases of clinically visible disease, it is necessary to conduct effective final disinfections of equipment and tools. This study aimed to determine the effect of ten commercially available and commonly used disinfectants on certified strains of P. larvae under laboratory conditions, as well as to compare the obtained results among individual genotypes of P. larvae. Selected products were tested by determining the zone of inhibition using an agar diffusion test, a suspension test for viable bacteria, a surface disinfectant test, and a sporicidal effect in the suspension test. Incidin OxyFoam S and Sekusept Aktiv are both effective against all examined genotypes of P. larvae. Despadac and Despadac Secure have a bactericidal effect, but their sporocidal effect is not as satisfactory as that of Genox. Genoll does not exhibit a sporicidal effect, and Ecocide S at 1%, Bee protect H forte, and Bee protect F did not exhibit a satisfactory sporocidal effect. Additionally, EM® PROBIOTIC FOR BEES did not exhibit any bactericidal effect. The effective application of control measures and proper application of final disinfection can reduce the reoccurrence of visible clinical signs of disease, whereas methods of early diagnosis can significantly reduce the incidence of the disease.
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Affiliation(s)
- Ivana Tlak Gajger
- Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10000 Zagreb, Croatia
| | - Zlatko Tomljanović
- Ministry of Agriculture, Ulica Grada Vukovara 78, 10000 Zagreb, Croatia;
| | - Franco Mutinelli
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università, 10, 35020 Legnaro, Italy; (F.M.); (A.G.)
| | - Anna Granato
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università, 10, 35020 Legnaro, Italy; (F.M.); (A.G.)
| | - Josipa Vlainić
- Institute Ruđer Bošković, Bijenička cesta 54, 10000 Zagreb, Croatia
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Paletti Rovey MF, Sotelo JP, Carezzano ME, Huallpa C, Oliva MDLM. Hexanic extract of Achyrocline satureioides: antimicrobial activity and in vitro inhibitory effect on mechanisms related to the pathogenicity of Paenibacillus larvae. Vet Res Commun 2023; 47:1379-1391. [PMID: 36809600 DOI: 10.1007/s11259-023-10086-1] [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: 12/22/2022] [Accepted: 02/15/2023] [Indexed: 02/23/2023]
Abstract
INTRODUCTION Paenibacillus larvae is a spore-forming bacillus, the most important bacterial pathogen of honeybee larvae and the causative agent of American foulbrood (AFB). Control measures are limited and represent a challenge for both beekeepers and researchers. For this reason, many studies focus on the search for alternative treatments based on natural products. AIM The objective of this study was to determine the antimicrobial activity of the hexanic extract (HE) of Achyrocline satureioides on P. larvae and the inhibitory activity on some mechanisms related to pathogenicity. MATERIAL AND METHODS The Minimum Inhibitory Concentration (MIC) of the HE was determined by the broth microdilution technique and the Minimum Bactericidal Concentration (MBC) by the microdrop technique. Swimming and swarming motility was evaluated in plates with 0.3 and 0.5% agar, respectively. Biofilm formation was evaluated and quantified by the Congo red and crystal violet method. The protease activity was evaluated by the qualitative technique on skim milk agar plates. RESULTS It was determined that the MIC of the HE on four strains of P. larvae ranged between 0.3 and 9.37 µg/ml and the MBC between 1.17 and 150 µg/ml. On the other hand, sub-inhibitory concentrations of the HE were able to decrease swimming motility, biofilm formation and the proteases production of P. larvae.
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Affiliation(s)
- María Fernanda Paletti Rovey
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Fisico-Químicas y Naturales, Instituto de Biotecnología Ambiental y Salud (INBIAS), Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601, X5804BYA, Río Cuarto, Córdoba, Argentina.
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), 2290, C1425FQB CABA, Godoy Cruz, Buenos Aires, Argentina.
| | - Jesica Paola Sotelo
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Fisico-Químicas y Naturales, Instituto de Biotecnología Ambiental y Salud (INBIAS), Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601, X5804BYA, Río Cuarto, Córdoba, Argentina
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), 2290, C1425FQB CABA, Godoy Cruz, Buenos Aires, Argentina
| | - María Evangelina Carezzano
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Fisico-Químicas y Naturales, Instituto de Biotecnología Ambiental y Salud (INBIAS), Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601, X5804BYA, Río Cuarto, Córdoba, Argentina
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), 2290, C1425FQB CABA, Godoy Cruz, Buenos Aires, Argentina
| | - Carlos Huallpa
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Fisico-Químicas y Naturales, Instituto de Biotecnología Ambiental y Salud (INBIAS), Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601, X5804BYA, Río Cuarto, Córdoba, Argentina
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), 2290, C1425FQB CABA, Godoy Cruz, Buenos Aires, Argentina
| | - María de Las Mercedes Oliva
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Fisico-Químicas y Naturales, Instituto de Biotecnología Ambiental y Salud (INBIAS), Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601, X5804BYA, Río Cuarto, Córdoba, Argentina
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), 2290, C1425FQB CABA, Godoy Cruz, Buenos Aires, Argentina
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Danaei GH, Amali A, Karami M, Khorrami MB, Riahi-Zanjani B, Sadeghi M. The significance of thymoquinone administration on liver toxicity of diazinon and cholinesterase activity; a recommendation for prophylaxis among individuals at risk. BMC Complement Med Ther 2022; 22:321. [PMID: 36464690 PMCID: PMC9720986 DOI: 10.1186/s12906-022-03806-8] [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: 05/18/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Diazinon (DZN), a widely used chemical herbicide for controlling agricultural pests, is an important organophosphorus pesticide and an environmental pollutant which induces toxic effects on living organisms during long-term exposure. Thymoquinone (TQ) is a phytochemical bioactive compound with antioxidant and anti-inflammatory properties. We aimed to evaluate the protective effects of TQ against DZN-induced hepatotoxicity through alleviating oxidative stress and enhancing cholinesterase (ChE) enzyme activity. METHODS Rats were randomly divided into six groups (n = 8); a negative control group receiving corn oil; a group only receiving DZN (20 mg/kg/day); a group treated with TQ (10 mg/kg/day), and three treatment groups as TQ + DZN, receiving different doses of TQ (2.5, 5, and 10 mg/kg/day). All experimental animals were orally treated for 28 consecutive days. The levels of superoxide dismutase (SOD), glutathione (GSH), malondialdehyde (MDA), alanine transaminase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and lactic acid dehydrogenase (LDH) were determined. In addition, ChE activity and histopathological changes were evaluated. RESULTS The results showed that DZN decreased GSH level (p < 0.01) and SOD activity (p < 0.01) in parallel to an increase in MDA level (p < 0.01) and increased the activity of AST, ALT, ALP, and LDH (p < 0.01) in comparison to the negative control group. Our findings demonstrated that TQ administration could diminish hepatotoxicity and reduce oxidative damage in DZN-treated rats, which could be linked to its antioxidant and free radical scavenging properties. It was also observed that TQ 10 mg/kg remarkably increased the activity of acetylcholinesterase, butyrylcholinesterase, and SOD enzymes, elevated GSH, decreased MDA, and reduced pathological alternations of the liver induced by DZN. CONCLUSION Thymoquinone 10 mg/kg increased the activity of plasma and blood cholinesterases and reduced DZN-induced alternations of the liver. Improvement of butyryl- and acetylcholinesterase activity suggests that maybe TQ supplement could be beneficial as pre-exposure prophylaxis among farm workers spraying pesticides.
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Affiliation(s)
- Gholam-Hassan Danaei
- grid.411583.a0000 0001 2198 6209Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arian Amali
- grid.411768.d0000 0004 1756 1744Student Research Committee, Paramedical Department, Islamic Azad University, Mashhad Branch, Mashhad, Iran
| | - Mohammad Karami
- grid.411623.30000 0001 2227 0923Department of Pharmacology and Toxicology, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Bamdad Riahi-Zanjani
- grid.411583.a0000 0001 2198 6209Medical Toxicology Research Center (MTRC), Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmood Sadeghi
- grid.411701.20000 0004 0417 4622Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran
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Giselle F, Azucena I, Dalila O, Florencia F, Facundo R, Giulia M, Sandra F, Maggi M, Cristina R. Antibacterial activity of cannabis (Cannabis sativa L.) female inflorescence and root extract against Paenibacillus larvae, causal agent of American foulbrood. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Daisley BA, Pitek AP, Mallory E, Chernyshova AM, Allen-Vercoe E, Reid G, Thompson GJ. Disentangling the microbial ecological factors impacting honey bee susceptibility to Paenibacillus larvae infection. Trends Microbiol 2022; 31:521-534. [PMID: 36526535 DOI: 10.1016/j.tim.2022.11.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022]
Abstract
Paenibacillus larvae is a spore-forming bacterial entomopathogen and causal agent of the important honey bee larval disease, American foulbrood (AFB). Active infections by vegetative P. larvae are often deadly, highly transmissible, and incurable for colonies but, when dormant, the spore form of this pathogen can persist asymptomatically for years. Despite intensive investigation over the past century, this process has remained enigmatic. Here, we provide an up-to-date synthesis on the often overlooked microbiota factors involved in the spore-to-vegetative growth transition (corresponding with the onset of AFB disease symptoms) and offer a novel outlook on AFB pathogenesis by focusing on the 'collaborative' and 'competitive' interactions between P. larvae and other honey bee-adapted microorganisms. Furthermore, we discuss the health trade-offs associated with chronic antibiotic exposure and propose new avenues for the sustainable control of AFB via probiotic and microbiota management strategies.
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Tonello N, Pimentel Betancurt D, Huallpa CL, Marioli JM, Moressi MB, Oliva MDLM, D’Eramo F. Fractionation of hexane extracts from Achyrocline satureioides and their biological activities against Paenibacillus larvae. Braz J Microbiol 2022; 53:1645-1655. [PMID: 35349126 PMCID: PMC9433582 DOI: 10.1007/s42770-022-00736-y] [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: 11/22/2021] [Accepted: 03/16/2022] [Indexed: 11/02/2022] Open
Abstract
Previous studies carried out in our laboratory described the antimicrobial activity of the whole hexanic extract (HE) of Achyrocline satureioides (Lam.) DC against Paenibacillus larvae, the causal agent of American Foulbrood (AFB) a disease of the honey bee larvae. In this study, the HE was partitioned into five main fractions by chromatographic techniques leading to the isolation of four known compounds: two prenylated phloroglucinol α-pyrones (1 and 3), 5,7-dihydroxy-3,8-dimethoxyflavone (gnaphaliin A) (2), and 23-methyl-6-O-demethylauricepyrone (4). Isolated compounds were further analyzed towards structural elucidation using 1H RMN and 13C RMN spectroscopic techniques. For the first time, the antimicrobial activity of the isolated compounds was evaluated against P. larvae strains by broth microdilution method and compared with that of the whole HE. Compounds 1-4 displayed minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values ranging between 0.07 and 62.5 μg/mL and 0.26 and 12.5 μg/mL, respectively. The lowest MIC and MBC values were obtained with compounds 3 and 4, respectively. The antimicrobial activity of each single compound and the combination of them showed that the presence of all compounds is needed for the antimicrobial efficacy of whole HE.
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Affiliation(s)
- Natalia Tonello
- Departamento de Química, Instituto Para El Desarrollo Agroindustrial Y de La Salud (IDAS, UNRC-CONICET), Facultad de Ciencias Exactas Físico-Químicas Y Naturales, Universidad Nacional de Río Cuarto, ruta 36, km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Diana Pimentel Betancurt
- Departamento de Química, Instituto Para El Desarrollo Agroindustrial Y de La Salud (IDAS, UNRC-CONICET), Facultad de Ciencias Exactas Físico-Químicas Y Naturales, Universidad Nacional de Río Cuarto, ruta 36, km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Carlos Leonel Huallpa
- Departamento de Microbiología E Inmunología, Instituto de Biotecnología Ambiental Y Salud (INBIAS, UNRC-CONICET), Facultad de Ciencias Exactas Físico-Químicas Y Naturales, Universidad Nacional de Río Cuarto, ruta 36, km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Juan Miguel Marioli
- Departamento de Química, Instituto Para El Desarrollo Agroindustrial Y de La Salud (IDAS, UNRC-CONICET), Facultad de Ciencias Exactas Físico-Químicas Y Naturales, Universidad Nacional de Río Cuarto, ruta 36, km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Marcela Beatriz Moressi
- Departamento de Química, Instituto Para El Desarrollo Agroindustrial Y de La Salud (IDAS, UNRC-CONICET), Facultad de Ciencias Exactas Físico-Químicas Y Naturales, Universidad Nacional de Río Cuarto, ruta 36, km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - María de las Mercedes Oliva
- Departamento de Microbiología E Inmunología, Instituto de Biotecnología Ambiental Y Salud (INBIAS, UNRC-CONICET), Facultad de Ciencias Exactas Físico-Químicas Y Naturales, Universidad Nacional de Río Cuarto, ruta 36, km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Fabiana D’Eramo
- Departamento de Química, Instituto Para El Desarrollo Agroindustrial Y de La Salud (IDAS, UNRC-CONICET), Facultad de Ciencias Exactas Físico-Químicas Y Naturales, Universidad Nacional de Río Cuarto, ruta 36, km 601, X5804BYA Río Cuarto, Córdoba, Argentina
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Adenosine and L-proline can possibly hinder Chinese Sacbrood virus infection in honey bees via immune modulation. Virology 2022; 573:29-38. [PMID: 35691116 DOI: 10.1016/j.virol.2022.05.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/17/2022] [Accepted: 05/30/2022] [Indexed: 11/21/2022]
Abstract
Sacbrood virus (SBV) infects larvae of honey bees, resulting in infected larvae becoming fluid-filled sacs. Our previous studies showed that the extract of herbal medicine, Radix Isatidis, could inhibit Chinese SBV (CSBV) infection in Asian honey bees (Apis cerana). Here, two compounds, adenosine and L-proline, which were previously reported to be associated with immune modulation, were identified in R. Isatidis extract and then selected for an evaluation of their antiviral effect on CSBV infection in A. cerana. Our results revealed that both adenosine and L-proline could significantly mitigate the impact of CSBV on the growth and development of infected larvae and modulate hosts' immune responses by downregulating the expression of immune genes in infected larvae. The results gained from this study suggest that adenosine and L-proline could possibly interfere CSBV infection via immune modulation to avoid exacerbations and nonspecific damage to infected larvae's own tissues.
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Iorizzo M, Ganassi S, Albanese G, Letizia F, Testa B, Tedino C, Petrarca S, Mutinelli F, Mazzeo A, De Cristofaro A. Antimicrobial Activity from Putative Probiotic Lactic Acid Bacteria for the Biological Control of American and European Foulbrood Diseases. Vet Sci 2022; 9:vetsci9050236. [PMID: 35622764 PMCID: PMC9143654 DOI: 10.3390/vetsci9050236] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/02/2022] [Accepted: 05/10/2022] [Indexed: 02/06/2023] Open
Abstract
The balance of the gut microbiome is important for the honey bee’s growth and development, immune function and defense against pathogens. The use of a beneficial bacteria-based strategy for the prevention and biocontrol of American foulbrood (AFB) and European foulbrood (EFB) diseases in honey bees offers interesting prospects. Lactic acid bacteria (LAB) are common inhabitants of the gastrointestinal tract of the honey bee. Among LABs associated with bee gut microbiota, Lactiplantibacillus plantarum (previously Lactobacillus plantarum) and Apilactobacillus kunkeei (formerly classified as Lactobacillus kunkeei) are two of the most abundant species. In this study, four Lactiplantibacillus plantarum strains and four Apilactobacillus kunkeei strains, isolated from the gastrointestinal tract of honey bee (Apis mellifera L.) were selected for their in vitro inhibition ability of Paenibacillus larvae ATCC 9545 and Melissococccus plutonius ATCC 35311. In addition, these LABs have been characterized through some biochemical and functional characteristics: cell surface properties (hydrophobicity and auto-aggregation), carbohydrates assimilation and enzymatic activities. The antimicrobial, biochemical and cell surface properties of these LABs have been functional to their candidature as potential probiotics in beekeeping and for the biocontrol of AFB and EFB diseases.
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Affiliation(s)
- Massimo Iorizzo
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
| | - Sonia Ganassi
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
| | - Gianluca Albanese
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
- Correspondence:
| | - Francesco Letizia
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
| | - Bruno Testa
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
| | - Cosimo Tedino
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
| | - Sonia Petrarca
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
- Conaproa, Consorzio Nazionale Produttori Apistici, 86100 Campobasso, Italy
| | - Franco Mutinelli
- Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), National Reference Laboratory for Honey Bee Health, Viale dell’Università 10, 35020 Legnaro, Italy;
| | - Alessandra Mazzeo
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
| | - Antonio De Cristofaro
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso, Italy; (M.I.); (S.G.); (F.L.); (B.T.); (C.T.); (S.P.); (A.M.); (A.D.C.)
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11
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Fitch G, Figueroa LL, Koch H, Stevenson PC, Adler LS. Understanding effects of floral products on bee parasites: Mechanisms, synergism, and ecological complexity. Int J Parasitol Parasites Wildl 2022; 17:244-256. [PMID: 35299588 PMCID: PMC8920997 DOI: 10.1016/j.ijppaw.2022.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 12/27/2022]
Abstract
Floral nectar and pollen commonly contain diverse secondary metabolites. While these compounds are classically thought to play a role in plant defense, recent research indicates that they may also reduce disease in pollinators. Given that parasites have been implicated in ongoing bee declines, this discovery has spurred interest in the potential for 'medicinal' floral products to aid in pollinator conservation efforts. We review the evidence for antiparasitic effects of floral products on bee diseases, emphasizing the importance of investigating the mechanism underlying antiparasitic effects, including direct or host-mediated effects. We discuss the high specificity of antiparasitic effects of even very similar compounds, and highlight the need to consider how nonadditive effects of multiple compounds, and the post-ingestion transformation of metabolites, mediate the disease-reducing capacity of floral products. While the bulk of research on antiparasitic effects of floral products on bee parasites has been conducted in the lab, we review evidence for the impact of such effects in the field, and highlight areas for future research at the floral product-bee disease interface. Such research has great potential both to enhance our understanding of the role of parasites in shaping plant-bee interactions, and the role of plants in determining bee-parasite dynamics. This understanding may in turn reveal new avenues for pollinator conservation.
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Affiliation(s)
- Gordon Fitch
- Department of Biology, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Laura L. Figueroa
- Department of Entomology, Cornell University, Ithaca, NY, 14853, USA
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Hauke Koch
- Royal Botanic Gardens, Kew Green, Kew, Richmond, Surrey, TW9 3AE, UK
| | - Philip C. Stevenson
- Royal Botanic Gardens, Kew Green, Kew, Richmond, Surrey, TW9 3AE, UK
- Natural Resources Institute, University of Greenwich, Kent, ME4 4TB, UK
| | - Lynn S. Adler
- Department of Biology, University of Massachusetts Amherst, Amherst, MA, 01003, USA
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12
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Functional Properties and Antimicrobial Activity from Lactic Acid Bacteria as Resources to Improve the Health and Welfare of Honey Bees. INSECTS 2022; 13:insects13030308. [PMID: 35323606 PMCID: PMC8953987 DOI: 10.3390/insects13030308] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/17/2022] [Accepted: 03/19/2022] [Indexed: 02/04/2023]
Abstract
Simple Summary Honey bees play a pivotal role in the sustainability of ecosystems and biodiversity. Many factors including parasites, pathogens, pesticide residues, forage losses, and poor nutrition have been proposed to explain honey bee colony losses. Lactic acid bacteria (LAB) are normal inhabitants of the gastrointestinal tract of honey bees and their role has been consistently reported in the literature. In recent years, there have been numerous scientific evidence that the intestinal microbiota plays an essential role in honey bee health. Management strategies, based on supplementation of the gut microbiota with probiotics, may be important to increase stress tolerance and disease resistance. In this review, recent scientific advances on the use of LABs as microbial supplements in the diet of honey bees are summarized and discussed. Abstract Honey bees (Apis mellifera) are agriculturally important pollinators. Over the past decades, significant losses of wild and domestic bees have been reported in many parts of the world. Several biotic and abiotic factors, such as change in land use over time, intensive land management, use of pesticides, climate change, beekeeper’s management practices, lack of forage (nectar and pollen), and infection by parasites and pathogens, negatively affect the honey bee’s well-being and survival. The gut microbiota is important for honey bee growth and development, immune function, protection against pathogen invasion; moreover, a well-balanced microbiota is fundamental to support honey bee health and vigor. In fact, the structure of the bee’s intestinal bacterial community can become an indicator of the honey bee’s health status. Lactic acid bacteria are normal inhabitants of the gastrointestinal tract of many insects, and their presence in the honey bee intestinal tract has been consistently reported in the literature. In the first section of this review, recent scientific advances in the use of LABs as probiotic supplements in the diet of honey bees are summarized and discussed. The second section discusses some of the mechanisms by which LABs carry out their antimicrobial activity against pathogens. Afterward, individual paragraphs are dedicated to Chalkbrood, American foulbrood, European foulbrood, Nosemosis, and Varroosis as well as to the potentiality of LABs for their biological control.
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13
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Taysi S, Algburi FS, Mohammed Z, Ali OA, Taysi ME. Thymoquinone: A Review of Pharmacological Importance, Oxidative Stress, COVID-19, and Radiotherapy. Mini Rev Med Chem 2022; 22:1847-1875. [PMID: 34983346 DOI: 10.2174/1389557522666220104151225] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/01/2021] [Accepted: 11/10/2021] [Indexed: 11/22/2022]
Abstract
Widely consumed worldwide, Nigella sativa (NS) is a medicinal herb commonly used in various alternative medicine systems such as Unani and Tibb, Ayurveda, and Siddha. Recommended for regular use in Tibb-e-Nabwi (Prophetic Medicine), NS is considered one of the most notable forms of healing medicine in Islamic literature. Thymoquinone (TQ), the main component of the essential oil of NS, has been reported to have many properties such as antioxidant, anti-inflammatory, antiviral, and antineoplastic. Its chemical structure indicates antiviral potential against many viruses, including the hepatitis C virus, human immunodeficiency virus, and other coronavirus diseases. Interestingly, molecular docking studies have demonstrated that TQ can potentially inhibit the development of the coronavirus disease 2019 (COVID-19) by binding to the receptor site on the transmembrane serine proteinase 2 (the activator enzyme that attaches the virus to the cell). In addition, TQ has been shown to be effective against cancer cells due to its inhibitory effect by binding to the different regions of MDM2, according to the proposed molecular docking study. Detailed in this review is the origin of TQ, its significance in alternative medicine, pharmacological value, potential as a cancer anti-proliferative agent, use against the coronavirus disease 2019 (COVID-19), and treatment of other diseases.
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Affiliation(s)
- Seyithan Taysi
- Department of Medical Biochemistry, Medical School, Gaziantep University, Gaziantep
| | - Firas Shawqi Algburi
- Department of Medical Biochemistry, Medical School, Gaziantep University, Gaziantep
- Department of Biology, College of Science, Tikrit University, Iraq
| | - Zaid Mohammed
- Department of Biochemistry and Technology, Gaziantep University, Gaziantep
| | - Omeed Akbar Ali
- Department of Medical Biochemistry, Medical School, Gaziantep University, Gaziantep
| | - Muhammed Enes Taysi
- Department of Emergency Medicine, Medical School, Bolu Izzet Baysal University- Bolu-Turkey
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14
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Saccà ML, Manici LM. Honey bee-associated bacteria as producers of bioactive compounds for protecting hives. A biosynthetic gene-based approach. Microbiol Res 2021; 252:126860. [PMID: 34521052 DOI: 10.1016/j.micres.2021.126860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/25/2021] [Accepted: 09/02/2021] [Indexed: 12/25/2022]
Abstract
Honey bee-associated bacteria are a source of natural compounds of interest for controlling hive decline which is threatening bee health globally. Genes involved in the biosynthesis of a series of extracellular compounds released by bacteria living on the external surface of honey bees were investigated. A biosynthetic gene-based approach was adopted by developing a battery of primers to target the genes involved in the biosynthesis of four groups of bioactive compounds (pyrrolizidine alkaloids, surfactin, 2-heptanone and helveticin J). The primers were tested on 51 bacterial isolates belonging to Bacillus thuringiensis, Acetobacteraceae bacterium, Bifidobacterium asteroides and Apilactobacillus kunkeei. The developed primers led to species-specific detection and characterization of the functional genes involved in the production of three out of four groups of compounds selected for this study. The findings suggest that microbial populations inhabiting apiaries harbor genes involved in the biosynthesis of metabolites linked to the reduction of important honey bee pathogens such as Varroa destructor, Paenibacillus larvae and Nosema ceranae. The gene-based approach adopted for evaluating the biosynthetic potential of bioactive compounds in hives is promising for investigating further compounds for low input control strategies of bee enemies.
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Affiliation(s)
- Maria Ludovica Saccà
- Council for Agricultural Research and Economics (CREA), Research Center for Agriculture and Environment, Via di Corticella 133, 40128, Bologna, Italy.
| | - Luisa Maria Manici
- Council for Agricultural Research and Economics (CREA), Research Center for Agriculture and Environment, Via di Corticella 133, 40128, Bologna, Italy
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15
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Pașca C, Matei IA, Diaconeasa Z, Rotaru A, Erler S, Dezmirean DS. Biologically Active Extracts from Different Medicinal Plants Tested as Potential Additives against Bee Pathogens. Antibiotics (Basel) 2021; 10:antibiotics10080960. [PMID: 34439010 PMCID: PMC8388991 DOI: 10.3390/antibiotics10080960] [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: 06/14/2021] [Revised: 08/01/2021] [Accepted: 08/06/2021] [Indexed: 02/02/2023] Open
Abstract
Honey bees (Apis mellifera) perform pollination service for many agricultural crops and contribute to the global economy in agriculture and bee products. However, honey bee health is an ongoing concern, as illustrated by persistent local population decline, caused by some severe bee diseases (e.g., nosemosis, AFB, EFB, chalkbrood). Three natural recipes are in development based on the bioactive compounds of different plants extract (Agastache foeniculum, Artemisia absinthium, Evernia prunastri, Humulus lupulus, Laurus nobilis, Origanum vulgare and Vaccinium myrtillus), characterised by HPLC-PDA. The antimicrobial activity of these recipes was tested in vitro against Paenibacillus larvae, Paenibacillus alvei, Brevibacillus laterosporus, Enterococcus faecalis, Ascosphaera apis and in vivo against Nosema ceranae. A mix of 20% blueberry, 40% absinthium, 10% oakmoss, 10% oregano, 10% Brewers Gold hops, 5% bay laurel and 5% anise hyssop extract showed the strongest antibacterial and antifungal activity. Combing several highly active plant extracts might be an alternative treatment against bee-disease-associated parasites and pathogens, in particular to replace synthetic antibiotics.
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Affiliation(s)
- Claudia Pașca
- Department of Apiculture and Sericulture, Faculty of Animal Sciences and Biotechnologies, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
- Correspondence: ; Tel.: +40-73-369-6413
| | - Ioana Adriana Matei
- Department of Microbiology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
| | - Zorița Diaconeasa
- Department of Chemistry, Biochemistry and Molecular Biology, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
| | - Ancuța Rotaru
- Department of Fundamental Science, Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine 3-5, 400372 Cluj-Napoca, Romania;
| | - Silvio Erler
- Julius Kühn Institute (JKI)-Federal Research Centre for Cultivated Plants, Institute for Bee Protection, Messeweg 11-12, 38104 Braunschweig, Germany;
| | - Daniel Severus Dezmirean
- Department of Apiculture and Sericulture, Faculty of Animal Sciences and Biotechnologies, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
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16
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Füchtbauer S, Mousavi S, Bereswill S, Heimesaat MM. Antibacterial properties of capsaicin and its derivatives and their potential to fight antibiotic resistance - A literature survey. Eur J Microbiol Immunol (Bp) 2021; 11:10-17. [PMID: 33764892 PMCID: PMC8042654 DOI: 10.1556/1886.2021.00003] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/09/2021] [Indexed: 12/12/2022] Open
Abstract
Antibiotic resistance is endangering public health globally and gives reason for constant fear of virtually intractable bacterial infections. Given a limitation of novel antibiotic classes brought to market in perspective, it is indispensable to explore novel, antibiotics-independent ways to fight bacterial infections. In consequence, the antibacterial properties of natural compounds have gained increasing attention in pharmacological sciences. We here performed a literature survey regarding the antibacterial effects of capsaicin and its derivatives constituting natural compounds of chili peppers. The studies included revealed that the compounds under investigation exerted i.) both direct and indirect antibacterial properties in vitro depending on the applied concentrations and the bacterial strains under investigation; ii.) synergistic antibacterial effects in combination with defined antibiotics; iii.) resistance-modification via inhibition of bacterial efflux pumps; iv.) attenuation of bacterial virulence factor expression; and v.) dampening of pathogen-induced immunopathological responses. In conclusion, capsaicin and its derivatives comprise promising antimicrobial molecules which could complement or replace antibiotic treatment strategies to fight bacterial infections. However, a solid basis for subsequent clinical trials requires future investigations to explore the underlying molecular mechanisms and in particular pharmaceutical evaluations in animal infection models.
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Affiliation(s)
- Samuel Füchtbauer
- Institute of Microbiology, Infectious Diseases and Immunology, Gastrointestinal Microbiology Research Group, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Soraya Mousavi
- Institute of Microbiology, Infectious Diseases and Immunology, Gastrointestinal Microbiology Research Group, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Stefan Bereswill
- Institute of Microbiology, Infectious Diseases and Immunology, Gastrointestinal Microbiology Research Group, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Markus M Heimesaat
- Institute of Microbiology, Infectious Diseases and Immunology, Gastrointestinal Microbiology Research Group, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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17
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Antimicrobial Activity against Paenibacillus larvae and Functional Properties of Lactiplantibacillus plantarum Strains: Potential Benefits for Honeybee Health. Antibiotics (Basel) 2020; 9:antibiotics9080442. [PMID: 32722196 PMCID: PMC7460353 DOI: 10.3390/antibiotics9080442] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 01/09/2023] Open
Abstract
Paenibacillus larvae is the causative agent of American foulbrood (AFB), a severe bacterial disease that affects larvae of honeybees. The present study evaluated, in vitro, antimicrobial activity of sixty-one Lactiplantibacillus plantarum strains, against P. larvae ATCC 9545. Five strains (P8, P25, P86, P95 and P100) that showed the greatest antagonism against P. larvae ATCC 9545 were selected for further physiological and biochemical characterizations. In particular, the hydrophobicity, auto-aggregation, exopolysaccharides production, osmotic tolerance, enzymatic activity and carbohydrate assimilation patterns were evaluated. The five L. plantarum selected strains showed suitable physical and biochemical properties for their use as probiotics in the honeybee diet. The selection and availability of new selected bacteria with good functional characteristics and with antagonistic activity against P. larvae opens up interesting perspectives for new biocontrol strategies of diseases such as AFB.
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18
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Khan SU, Anjum SI, Ansari MJ, Khan MHU, Kamal S, Rahman K, Shoaib M, Man S, Khan AJ, Khan SU, Khan D. Antimicrobial potentials of medicinal plant's extract and their derived silver nanoparticles: A focus on honey bee pathogen. Saudi J Biol Sci 2019; 26:1815-1834. [PMID: 31762664 PMCID: PMC6864162 DOI: 10.1016/j.sjbs.2018.02.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/12/2018] [Accepted: 02/15/2018] [Indexed: 12/23/2022] Open
Abstract
Infectious (or Communicable) diseases are not only the past but also the present problem in developing as well as developed countries. It is caused by various pathogenic microbes like fungi, bacteria, parasites and virus etc. The medicinal plants and nano-silver have been used against the pathogenic microbes. Herbal medicines are generally used for healthcare because they have low price and wealthy source of antimicrobial properties. Like medicinal plants, silver nanoparticles also have emergent applications in biomedical fields due to their immanent therapeutic performance. Here, we also explore the various plant parts such as bark, stem, leaf, fruit and seed against Gram negative and Gram-positive bacteria, using different solvents for extraction i.e. methanol, ethyl acetate, chloroform, acetone, n. hexane, butanol, petroleum ether and benzene. Since ancient to date most of the countries have been used herbal medicines, but in Asia, some medicinal plants are commonly used in rural and backward areas as a treatment for infectious diseases. In this review, we provide simple information about medicinal plants and Silver nanoparticles with their potentialities such as antiviral, bactericidal and fungicidal. Additionally, the present review to highlights the versatile applications of medicinal plants against honey bee pathogen such as fungi (Ascosphaera apis), mites (Varroa spp. and Tropilaelaps sp.), bacteria (Melissococcus plutonius Paenibacillus larvae), and microsporidia (Nosema apis and Nosema ceranae). In conclusion, promising nonchemical (plant extracts) are innocuous to adult bees. So, we strongly believed that this effort was made to evaluate the status of medicinal plants researches globally.
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Affiliation(s)
- Shahid Ullah Khan
- College of Plant Sciences and Technology, National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Syed Ishtiaq Anjum
- Department of Zoology, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Muhammad Javed Ansari
- Bee Research Chair, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
- Department of Botany, Hindu College Moradabad, M.J.P Rohilkhand University, 244001, India
| | - Muhammad Hafeez Ullah Khan
- College of Plant Sciences and Technology, National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Sajid Kamal
- School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Khaista Rahman
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Muhammad Shoaib
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Shad Man
- School of Life Sciences, Inner Mongolia University Hohhot, Inner Mongolia 010021, PR China
| | - Abdul Jamil Khan
- School of Life Sciences, Inner Mongolia University Hohhot, Inner Mongolia 010021, PR China
| | - Salim Ullah Khan
- Institute of Chemical Sciences, Gomal University Dera Ismail Khan, KPK, Pakistan
| | - Dilfaraz Khan
- Institute of Chemical Sciences, Gomal University Dera Ismail Khan, KPK, Pakistan
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19
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Natural Product Medicines for Honey Bees: Perspective and Protocols. INSECTS 2019; 10:insects10100356. [PMID: 31635365 PMCID: PMC6835950 DOI: 10.3390/insects10100356] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 12/15/2022]
Abstract
The western honey bee remains the most important pollinator for agricultural crops. Disease and stressors threaten honey bee populations and productivity during winter- and summertime, creating costs for beekeepers and negative impacts on agriculture. To combat diseases and improve overall bee health, researchers are constantly developing honey bee medicines using the tools of microbiology, molecular biology and chemistry. Below, we present a manifesto alongside standardized protocols that outline the development and a systematic approach to test natural products as ‘bee medicines’. These will be accomplished in both artificial rearing conditions and in colonies situated in the field. Output will be scored by gene expression data of host immunity, bee survivorship, reduction in pathogen titers, and more subjective merits of the compound in question. Natural products, some of which are already encountered by bees in the form of plant resins and nectar compounds, provide promising low-cost candidates for safe prophylaxis or treatment of bee diseases.
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20
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Collins W, Lowen N, Blake DJ. Caffeic Acid Esters Are Effective Bactericidal Compounds Against Paenibacillus larvae by Altering Intracellular Oxidant and Antioxidant Levels. Biomolecules 2019; 9:biom9080312. [PMID: 31357646 PMCID: PMC6722690 DOI: 10.3390/biom9080312] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 12/12/2022] Open
Abstract
American Foulbrood (AFB) is a deadly bacterial disease affecting pupal and larval honey bees. AFB is caused by the endospore-forming bacterium Paenibacillus larvae (PL). Propolis, which contains a variety of organic compounds, is a product of bee foraging and is a resinous substance derived from botanical substances found primarily in trees. Several compounds from the class of caffeic acid esters, which are commonly found in propolis, have been shown to have antibacterial activity against PL. In this study, six different caffeic acid esters were synthesized, purified, spectroscopically analyzed, and tested for their activity against PL to determine the minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs). Caffeic acid isopropenyl ester (CAIE), caffeic acid benzyl ester (CABE), and caffeic acid phenethyl ester (CAPE) were the most effective in inhibiting PL growth and killing PL cell with MICs and MBCs of 125 µg/mL when used individually, and a MIC and MBC of 31.25 µg/mL for each compound alone when CAIE, CABE, and CAPE are used in combination against PL. These compounds inhibited bacterial growth through a bactericidal effect, which revealed cell killing but no lysis of PL cells after 18 h. Incubation with CAIE, CABE, and CAPE at their MICs significantly increased reactive oxygen species levels and significantly changed glutathione levels within PL cells. Caffeic acid esters are potent bactericidal compounds against PL and eliminate bacterial growth through an oxidative stress mechanism.
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Affiliation(s)
- William Collins
- Department of Biochemistry and Chemistry, Fort Lewis College, 1000 Rim Dr., Durango, CO 81301, USA.
| | - Noah Lowen
- Department of Biology, Fort Lewis College, 1000 Rim Dr., Durango, CO 81301, USA
| | - David J Blake
- Department of Biology, Fort Lewis College, 1000 Rim Dr., Durango, CO 81301, USA
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21
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Wiese N, Fischer J, Heidler J, Lewkowski O, Degenhardt J, Erler S. The terpenes of leaves, pollen, and nectar of thyme (Thymus vulgaris) inhibit growth of bee disease-associated microbes. Sci Rep 2018; 8:14634. [PMID: 30279427 PMCID: PMC6168512 DOI: 10.1038/s41598-018-32849-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 09/17/2018] [Indexed: 12/21/2022] Open
Abstract
Honey bees are highly prone to infectious diseases, causing colony losses in the worst case. However, they combat diseases through a combination of their innate immune system and social defence behaviours like foraging for health-enhancing plant products (e.g. nectar, pollen and resin). Plant secondary metabolites are not only highly active against bacteria and fungi, they might even enhance selective foraging and feeding decisions in the colony. Here, we tested six major plant terpenes and their corresponding acetates, characterizing six natural Thymus vulgaris chemotypes, for their antimicrobial activity on bacteria associated with European foulbrood. Comparison of the inhibitory activity revealed the highest activity for carvacrol and thymol whereas the acetates mostly did not inhibit bacterial growth. All terpenes and acetates are present in the nectar and pollen of thyme, with pollen containing concentrations higher by several orders of magnitude. The physiological response was tested on forager and freshly emerged bees by means of antennal electroantennography. Both responded much stronger to geraniol and trans-sabinene hydrate compared to carvacrol and thymol. In conclusion, bee-forageable thyme product terpenes (mainly from pollen) yield effective antibiotic activity by reducing the growth of bee disease-associated bacteria and can be detected with different response levels by the honey bees' antennae. This is a further step forward in understanding the complex pathogen-pollinator-plant network.
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Affiliation(s)
- Natalie Wiese
- Institute of Pharmacy, Pharmaceutical Biotechnology, Martin-Luther-University Halle-Wittenberg, Hoher Weg 8, 06120, Halle, Saale, Germany
| | - Juliane Fischer
- Institute of Biology, Molecular Ecology, Martin-Luther-University Halle-Wittenberg, Hoher Weg 4, 06120, Halle, Saale, Germany
| | - Jenifer Heidler
- Institute of Biology, Molecular Ecology, Martin-Luther-University Halle-Wittenberg, Hoher Weg 4, 06120, Halle, Saale, Germany
| | - Oleg Lewkowski
- Institute of Biology, Molecular Ecology, Martin-Luther-University Halle-Wittenberg, Hoher Weg 4, 06120, Halle, Saale, Germany
| | - Jörg Degenhardt
- Institute of Pharmacy, Pharmaceutical Biotechnology, Martin-Luther-University Halle-Wittenberg, Hoher Weg 8, 06120, Halle, Saale, Germany
| | - Silvio Erler
- Institute of Biology, Molecular Ecology, Martin-Luther-University Halle-Wittenberg, Hoher Weg 4, 06120, Halle, Saale, Germany.
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Jeliazkova E, D Zheljazkov V, Kačániova M, Astatkie T, L Tekwani B. Sequential Elution of Essential Oil Constituents during Steam Distillation of Hops (Humulus lupulus L.) and Influence on Oil Yield and Antimicrobial Activity. J Oleo Sci 2018; 67:871-883. [PMID: 29877222 DOI: 10.5650/jos.ess17216] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The profile and bioactivity of hops (Humulus lupulus L.) essential oil, a complex natural product extracted from cones via steam distillation, depends on genetic and environmental factors, and may also depend on extraction process. We hypothesized that compound mixtures eluted sequentially and captured at different timeframes during the steam distillation process of whole hop cones would have differential chemical and bioactivity profiles. The essential oil was collected sequentially at 8 distillation time (DT) intervals: 0-2, 2-5, 5-10, 10-30, 30-60, 60-120, 120-180, and 180-240 min. The control was a 4-h non-interrupted distillation. Nonlinear regression models described the DT and essential oil compounds relationship. Fractions yielded 0.035 to 0.313% essential oil, while control yielded 1.47%. The oil eluted during the first hour was 83.2%, 9.6% during the second hour, and only 7.2% during the second half of the distillation. Essential oil (EO) fractions had different chemical profile. Monoterpenes were eluted early, while sequiterpenes were eluted late. Myrcene and linalool were the highest in 0-2 min fraction, β-caryophyllene, β-copaene, β-farnesene, and α-humulene were highest in fractions from middle of distillation, whereas α- bergamotene, γ-muurolene, β- and α-selinene, γ- and δ-cadinene, caryophyllene oxide, humulne epoxide II, τ-cadinol, and 6-pentadecen-2-one were highest in 120-180 or 180-240 min fractions. The Gram-negative Escherichia coli was strongly inhibited by essential oil fractions from 2-5 min and 10-30 min, followed by oil fraction from 0-2 min. The strongest inhibition activity against Gram-negative Yersinia enterocolitica, and Gram-positive Clostridium perfringens, Enterococcus faecalis, and Staphylococcus aureus subs. aureus was observed with the control essential oil. This is the first study to describe significant activity of hops essential oils against Trypanosoma brucei, a parasitic protozoan that causes African trypanosomiasis (sleeping sickness in humans and nagana in other animals). Hops essential oil fractions or whole oil may be used as antimicrobial agents or for the development of new drugs.
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Affiliation(s)
| | | | - Miroslava Kačániova
- Department of Microbiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture
| | | | - Babu L Tekwani
- National Center for Natural Products Research & Department of Pharmacology, School of Pharmacy, University of Mississippi
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Danaei GH, Memar B, Ataee R, Karami M. Protective effect of thymoquinone, the main component of Nigella Sativa, against diazinon cardio-toxicity in rats. Drug Chem Toxicol 2018; 42:585-591. [PMID: 29648463 DOI: 10.1080/01480545.2018.1454459] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Several studies have shown that oxidative stress and cell damage can occur at very early stages of diazinon (DZN) exposure. The present study was designed to determine the beneficial effect of thymoquinone (Thy), the main component of Nigella sativa (black seed or black cumin), against DZN cardio-toxicity in rats. In the present experimental study, 48 male Wistar rats were randomly divided into six groups: control (corn oil gavages), DZN gavages (20 mg/kg/day), Thy gavages (10 mg/kg/day) and Thy + DVN gavages (2.5, 5 and 10 mg/kg/day). Treatments were continued for 28 days, then the animals were anesthetized by ether and superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), lactate dehydrogenize (LDH) and glutathione peroxide (GPX) activity was evaluated. In addition, glutathione (GSH) and malondialdehyde (MDA) the heart tissue and creatinephosphokinase-MB (CPK-MB) and troponin (TPI) levels and cholinesterase activity in the blood were evaluated. DZN-induced oxidative damage and elevated the levels of the cardiac markers CK-MB, TPI, MDA and LDH and decreased SOD, CAT and cholinesterase activity and GSH level compared with the control group. Treatment with Thy reduced DZN cardio-toxicity and cholinesterase activity. The success of Thy supplementation against DZN toxicity can be attributed to the antioxidant effects of its constituents. Administration of Thy as a natural antioxidant decreased DZN cardio-toxicity and improved cholinesterase activity in rats through the mechanism of free radical scavenging.
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Affiliation(s)
- Gholam Hassan Danaei
- Student Research Committee, Department of Pharmacology and Toxicology, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Bahram Memar
- Department of Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ramin Ataee
- Department of Pharmacology and Toxicology, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Mazandaran, Iran
| | - Mohammad Karami
- Department of Pharmacology and Toxicology, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Mazandaran, Iran
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Fernández NJ, Damiani N, Podaza EA, Martucci JF, Fasce D, Quiroz F, Meretta PE, Quintana S, Eguaras MJ, Gende LB. Laurus nobilis L . Extracts against Paenibacillus larvae: Antimicrobial activity, antioxidant capacity, hygienic behavior and colony strength. Saudi J Biol Sci 2018; 26:906-912. [PMID: 31303818 PMCID: PMC6601024 DOI: 10.1016/j.sjbs.2018.04.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 04/04/2018] [Accepted: 04/08/2018] [Indexed: 11/17/2022] Open
Abstract
The aim of this work was to compare the antimicrobial activity against Paenibacillus larvae and the antioxidant capacity of two Laurus nobilis L. extracts obtained by different extraction methods. The hydroalcoholic extract was moreover added as supplementary diet to bees in field conditions to test behavioural effects and colony strength. Both laurel extracts were subjected to different phytochemical analysis to identify their bioactive compounds. Antimicrobial activity was analyzed by the minimal inhibitory concentration (MIC) determination by means the agar dilution method. The hydroalcoholic extract (HE) was able to inhibit the bacterial growth of all P. larvae strains, with 580 µg/mL mean value. This better antibacterial activity in relation to the essential oil (EO) could be explained by the presence of some phenolic compounds, such as flavonoids, evidenced by characteristic bands resulting from the Fourier Transform Infrared Spectroscopy (FTIR) analysis. Antioxidant activities of the extracts were evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical-scavenging ability and ferric reducing antioxidant power (FRAP) assays. The HE showed the highest antioxidant activity as measured by DPPH, with IC50 values of 257 ± 12 μg/mL. The FRAP assay method showed that the HE was 3-fold more effective reducing agent than the EO. When the bee colonies were supplied with laurel HE in sugar paste an improvement in their general condition was noticed, although neither the hygienic behavior nor the proportions of the breeding cells varied statistically due to the treatment. In conclusion, the inhibition power against P. larvae attributable to the phenolic compounds, the antioxidant capacity of the HE, and the non-lethal effects on adult honey bees on field trials suggest the HE of laurel as a promising substance for control American foulbrood disease.
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Affiliation(s)
- Natalia Jorgelina Fernández
- Centro de Investigación en Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambiente (IIPROSAM), Comisión de Investigaciones Científicas de la provincia de Buenos Aires (CIC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600) Mar del Plata, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina
| | - Natalia Damiani
- Centro de Investigación en Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambiente (IIPROSAM), Comisión de Investigaciones Científicas de la provincia de Buenos Aires (CIC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600) Mar del Plata, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina
| | - Enrique Arturo Podaza
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina
| | - Josefa Fabiana Martucci
- Instituto de Investigaciones en Ciencia y Tecnología de materiales, CONICET - Facultad de Ingeniería, UNMdP, J.B. Justo 4302, 7600 Mar del Plata, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina
| | - Diana Fasce
- Instituto de Investigaciones en Ciencia y Tecnología de materiales, CONICET - Facultad de Ingeniería, UNMdP, J.B. Justo 4302, 7600 Mar del Plata, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina
| | - Federico Quiroz
- Centro de Investigación en Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambiente (IIPROSAM), Comisión de Investigaciones Científicas de la provincia de Buenos Aires (CIC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600) Mar del Plata, Buenos Aires, Argentina
| | - Pablo Ezequiel Meretta
- IIMC-Instituto de Investigaciones Marinas y Costeras, CONICET-UNMDP, Funes 3350, Mar del Plata 7600, Buenos Aires, Argentina
| | - Silvina Quintana
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina.,Laboratorio de Biología Molecular, Fares Taie Instituto de Análisis, Rivadavia 3343, 7600 Mar del Plata, Argentina
| | - Martín Javier Eguaras
- Centro de Investigación en Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambiente (IIPROSAM), Comisión de Investigaciones Científicas de la provincia de Buenos Aires (CIC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600) Mar del Plata, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina
| | - Liesel Brenda Gende
- Centro de Investigación en Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambiente (IIPROSAM), Comisión de Investigaciones Científicas de la provincia de Buenos Aires (CIC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600) Mar del Plata, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Rivadavia 1917, C1033AJ Buenos Aires, Argentina
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25
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Ginsberg HS, Bargar TA, Hladik ML, Lubelczyk C. Management of Arthropod Pathogen Vectors in North America: Minimizing Adverse Effects on Pollinators. JOURNAL OF MEDICAL ENTOMOLOGY 2017; 54:1463-1475. [PMID: 28968680 DOI: 10.1093/jme/tjx146] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Indexed: 06/07/2023]
Abstract
Tick and mosquito management is important to public health protection. At the same time, growing concerns about declines of pollinator species raise the question of whether vector control practices might affect pollinator populations. We report the results of a task force of the North American Pollinator Protection Campaign (NAPPC) that examined potential effects of vector management practices on pollinators, and how these programs could be adjusted to minimize negative effects on pollinating species. The main types of vector control practices that might affect pollinators are landscape manipulation, biocontrol, and pesticide applications. Some current practices already minimize effects of vector control on pollinators (e.g., short-lived pesticides and application-targeting technologies). Nontarget effects can be further diminished by taking pollinator protection into account in the planning stages of vector management programs. Effects of vector control on pollinator species often depend on specific local conditions (e.g., proximity of locations with abundant vectors to concentrations of floral resources), so planning is most effective when it includes collaborations of local vector management professionals with local experts on pollinators. Interventions can then be designed to avoid pollinators (e.g., targeting applications to avoid blooming times and pollinator nesting habitats), while still optimizing public health protection. Research on efficient targeting of interventions, and on effects on pollinators of emerging technologies, will help mitigate potential deleterious effects on pollinators in future management programs. In particular, models that can predict effects of integrated pest management on vector-borne pathogen transmission, along with effects on pollinator populations, would be useful for collaborative decision-making.
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Affiliation(s)
- Howard S Ginsberg
- USGS Patuxent Wildlife Research Center, University of Rhode Island, RI Field Station, Woodward Hall - PSE, Kingston, RI 02881
| | - Timothy A Bargar
- USGS Wetland and Aquatic Research Center, 7920 NW 71st St., Gainesville, FL 32653
| | - Michelle L Hladik
- USGS California Water Science Center, 6000 J St., Placer Hall, Sacramento, CA 95819
| | - Charles Lubelczyk
- Maine Medical Center Research Institute, Vector-Borne Disease Laboratory, 81 Research Dr., Scarborough, ME 04074
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Chaimanee V, Thongtue U, Sornmai N, Songsri S, Pettis J. Antimicrobial activity of plant extracts against the honeybee pathogens,Paenibacillus larvaeandAscosphaera apisand their topical toxicity toApis melliferaadults. J Appl Microbiol 2017; 123:1160-1167. [DOI: 10.1111/jam.13579] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 08/08/2017] [Accepted: 08/26/2017] [Indexed: 12/01/2022]
Affiliation(s)
- V. Chaimanee
- Department of Biotechnology; Maejo University Phrae Campus; Phrae Thailand
| | - U. Thongtue
- Department of Biotechnology; Maejo University Phrae Campus; Phrae Thailand
| | - N. Sornmai
- Department of Biotechnology; Maejo University Phrae Campus; Phrae Thailand
| | - S. Songsri
- Department of Chemistry; Maejo University Phrae Campus; Phrae Thailand
| | - J.S. Pettis
- Bee Research Laboratory; USDA-ARS; Beltsville MD USA
- Institute of Bee Health; University of Bern; Bern Switzerland
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27
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Danaei GH, Karami M. Protective effect of thymoquinone against diazinon-induced hematotoxicity, genotoxicity and immunotoxicity in rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 55:217-222. [PMID: 28938193 DOI: 10.1016/j.etap.2017.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 08/31/2017] [Accepted: 09/04/2017] [Indexed: 06/07/2023]
Abstract
Several studies have shown that oxidative stress and cell damage can occur in the very early stages of diazinon (DZN) exposure. The present study was designed to determine the beneficial effect of thymoquinone (Thy), the main component of Nigella sativa (black seed or black cumin) against DZN immunotoxicity, hematotoxicity and genotoxicity in rats. In the present experimental study, 48 male Wistar rats were randomly divided into six groups, (eight per group) as follows: control (receiving corn oil as the DZN solvent), DZN (20mg/kg), Thy (10mg/kg), Thy (2.5mg/kg)+DZN, Thy (5mg/kg)+DZN and Thy (10mg/kg)+DZN. After four weeks of treatment, the hematological parameters of red blood cells (RBCs), white blood cells (WBCs), hemoglobin (Hb), hematocrit (Hct) and platelets (PLTs) were evaluated. The evaluation of genotoxicity was carried out using the micronucleus assay. For measurement of cytokine production, interferon gamma (IFN-γ), interleukin 10 (IL10) and interleukin 4 (IL4) were chosen as immunotoxicity indicators of DZN toxicity. DZN was found to decrease RBCs, WBCs, Hb, Hct, PLTs, butyrl- and acetyl-cholinesterase activity and I FN-γ and increased the micronucleus indices of IL10 and IL4 as compared with the control group. Treatment with Thy reduced DZN hematotoxicity and immunotoxicity, but, significantly, did not prevent genotoxicity. This study showed that Thy (without the significant effect on genotoxicity) decreased the hematological toxicity, immunotoxicity and butyrl and acetyl cholinesterase activity induced by DZN. The success of Thy supplementation against DZN toxicity can be attributed to the antioxidant effects of its constituents.
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Affiliation(s)
- Gholam Hassan Danaei
- Student Research Committee, Department of Pharmacology and Toxicology, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohammad Karami
- Department of Pharmacology and Toxicology, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.
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28
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Bumble bee parasite strains vary in resistance to phytochemicals. Sci Rep 2016; 6:37087. [PMID: 27883009 PMCID: PMC5121629 DOI: 10.1038/srep37087] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 10/14/2016] [Indexed: 12/05/2022] Open
Abstract
Nectar and pollen contain diverse phytochemicals that can reduce disease in pollinators. However, prior studies showed variable effects of nectar chemicals on infection, which could reflect variable phytochemical resistance among parasite strains. Inter-strain variation in resistance could influence evolutionary interactions between plants, pollinators, and pollinator disease, but testing direct effects of phytochemicals on parasites requires elimination of variation between bees. Using cell cultures of the bumble bee parasite Crithidia bombi, we determined (1) growth-inhibiting effects of nine floral phytochemicals and (2) variation in phytochemical resistance among four parasite strains. C. bombi growth was unaffected by naturally occurring concentrations of the known antitrypanosomal phenolics gallic acid, caffeic acid, and chlorogenic acid. However, C. bombi growth was inhibited by anabasine, eugenol, and thymol. Strains varied >3-fold in phytochemical resistance, suggesting that selection for phytochemical resistance could drive parasite evolution. Inhibitory concentrations of thymol (4.53–22.2 ppm) were similar to concentrations in Thymus vulgaris nectar (mean 5.2 ppm). Exposure of C. bombi to naturally occurring levels of phytochemicals—either within bees or during parasite transmission via flowers—could influence infection in nature. Flowers that produce antiparasitic phytochemicals, including thymol, could potentially reduce infection in Bombus populations, thereby counteracting a possible contributor to pollinator decline.
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29
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Ansari MJ, Al-Ghamdi A, Usmani S, Al-Waili N, Nuru A, Sharma D, Khan KA, Kaur M, Omer M. In vitroevaluation of the effects of some plant essential oils onPaenibacillus larvae, the causative agent of American foulbrood. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1086690] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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30
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Anjum SI, Ayaz S, Shah AH, Khan S, Khan SN. Controlling honeybee pathogen by using neem and Barbaka plant extracts. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1051493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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31
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Piana M, Brum TFD, Boligon AA, Alves CF, Freitas RBD, Nunes LT, Mossmann NJ, Janovik V, Jesus RS, Vaucher RA, Santos RC, Athayde ML. In vitro growth-inhibitory effect of Brazilian plants extracts against Paenibacillus larvae and toxicity in bees. ACTA ACUST UNITED AC 2015; 87:1041-7. [DOI: 10.1590/0001-3765201520140282] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 12/23/2014] [Indexed: 11/22/2022]
Abstract
American foulbrood (AFB) is a serious worldwide spreading disease in bees caused by Paenibacillus larvae. Plants extracts are known to decrease or inhibit the growth of these bacteria. The purpose of this study was to evaluate the antimicrobial activity of Calendula. officinalis, Cariniana domestica, and Nasturtium officinale extracts against the P. larvae and to evaluate the toxicity of the extracts in bees. In vitro activity against P. larvae of the extracts was evaluated by micro dilution method and the minimal inhibitory concentrations (MICs) were also determined. The concentrations used in the toxicity test were established based on the MIC values and by the spraying application method. The P. larvae was susceptible to the evaluated crude extract of C. officinalis and N. officinale. To C. domestica, only the ethyl acetate (EtAc) fraction and n-butanol (BuOH) fractions had activity against P. larvae. Toxicity analysis in bees showed no toxicity for N. officinale crude extract and for C. domestica BuOH fraction during 15 days of treatment, however, some deaths of bees occurred during the first three days of treatment with C. officinalis and C. domestica EtAc fraction. The results with these species were firstly described and showed that N. officinale crude extract and C. domestica BuOH fraction both presented not toxic effects in the concentration tested by the spraying application method, and can be a useful alternative for treatment or prevention of AFB.
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Affiliation(s)
| | | | | | - Camilla F.S. Alves
- Universidade Federal de Santa Maria, Brasil; Centro Universitário Franciscano, Brasil
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32
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Thymoquinone and its therapeutic potentials. Pharmacol Res 2015; 95-96:138-58. [DOI: 10.1016/j.phrs.2015.03.011] [Citation(s) in RCA: 251] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/16/2015] [Accepted: 03/16/2015] [Indexed: 12/11/2022]
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Hernández-López J, Crockett S, Kunert O, Hammer E, Schuehly W, Bauer R, Crailsheim K, Riessberger-Gallé U. In vitro growth inhibition by Hypericum extracts and isolated pure compounds of Paenibacillus larvae, a lethal disease affecting honeybees worldwide. Chem Biodivers 2015; 11:695-708. [PMID: 24827680 DOI: 10.1002/cbdv.201300399] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Indexed: 11/08/2022]
Abstract
The in vitro inhibitory potential of 50 extracts from various species of the flowering plant genus Hypericum was investigated using the Kirby-Bauer disk diffusion susceptibility test against Paenibacillus larvae, a spore-forming, Gram-positive bacterial pathogen that causes American foulbrood (AFB), a lethal disease affecting honeybee brood worldwide. Of the tested extracts, 14 were identified as highly active against P. larvae as compared to the activity of the positive control, indicating the presence of highly potent antibacterial compounds in the extracts. Examination of these extracts using TLC and HPLC/MS analyses revealed the presence of acylphloroglucinol and filicinic-acid derivatives. Six pure compounds isolated from these extracts, viz., hyperforin (1), uliginosin B (2), uliginosin A (3), 7-epiclusianone (4), albaspidin AA (5), and drummondin E (6), displayed strong antibacterial activity against the vegetative form of P. larvae (MIC ranging from 0.168-220 μM). Incubation of P. larvae spores with the lipophilic extract of Hypericum perforatum and its main acylphloroglucinol constituent 1 led to the observation of significantly fewer colony forming units as compared to the negative control, indicating that the acylphloroglucinol scaffold represents an interesting lead structure for the development of new AFB control agents.
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34
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Negin S, Gokel MR, Patel MB, Sedinkin SL, Osborn DC, Gokel GW. The aqueous medium-dimethylsulfoxide conundrum in biological studies. RSC Adv 2015. [DOI: 10.1039/c4ra15217d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
A series of straight and branched chain pyrogallol[4]arenes was studied and found to be essentially nontoxic to two strains of E. coli.
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Affiliation(s)
- Saeedeh Negin
- Center for Nanoscience
- University of Missouri-St. Louis
- St. Louis
- USA
- Dept. of Chemistry
| | - Michael R. Gokel
- Center for Nanoscience
- University of Missouri-St. Louis
- St. Louis
- USA
| | - Mohit B. Patel
- Dept. of Chemistry
- University of Missouri-St. Louis
- St. Louis
- USA
- Department of Biology
| | - Sergey L. Sedinkin
- Center for Nanoscience
- University of Missouri-St. Louis
- St. Louis
- USA
- Dept. of Chemistry
| | - David C. Osborn
- Center for Nanoscience
- University of Missouri-St. Louis
- St. Louis
- USA
| | - George W. Gokel
- Center for Nanoscience
- University of Missouri-St. Louis
- St. Louis
- USA
- Dept. of Chemistry
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35
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Archer CR, Köhler A, Pirk CWW, Oosthuizen V, Apostolides Z, Nicolson SW. Antioxidant supplementation can reduce the survival costs of excess amino acid intake in honeybees. JOURNAL OF INSECT PHYSIOLOGY 2014; 71:78-86. [PMID: 25450562 DOI: 10.1016/j.jinsphys.2014.10.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 09/16/2014] [Accepted: 10/01/2014] [Indexed: 06/04/2023]
Abstract
Over-consuming amino acids is associated with reduced survival in many species, including honeybees. The mechanisms responsible for this are unclear but one possibility is that excessive intake of amino acids increases oxidative damage. If this is the case, antioxidant supplementation may help reduce the survival costs of high amino acid intake. We tested this hypothesis in African honeybees (Apis mellifera scutellata) using the major antioxidant in green tea, epigallocatechin-3-gallate (EGCG). We first determined the dose-range of EGCG that improved survival of caged honeybees fed sucrose solution. We then provided bees with eight diets that differed in their ratio of essential amino acids (EAA) to carbohydrate (C) (0:1, 1:250, 1:100, 1:75, 1:50, 1:25, 1:10, 1:5 EAA:C) and also in their EGCG dose (0.0 or 0.4 mM). We found that bees fed sucrose only solution survived better than bees fed EAA diets. Despite this, bees preferred a diet that contained intermediate ratios of EAA:C (ca. 1:25), which may represent the high demands for nitrogen of developing nurse bees. EGCG supplementation improved honeybee survival but only at an intermediate dose (0.3-0.5 mM) and in bees fed low EAA diets (1:250, 1:100 EAA:C). That EGCG counteracted the lifespan reducing effects of eating low EAA diets suggests that oxidative damage may be involved in the association between EAAs and lifespan in honeybees. However, that EGCG had no effect on survival in bees fed high EAA diets suggests that there are other physiological costs of over-consuming EAAs in honeybees.
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Affiliation(s)
- C Ruth Archer
- Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - Angela Köhler
- Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - Christian W W Pirk
- Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - Vinette Oosthuizen
- Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - Zeno Apostolides
- Department of Biochemistry, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - Susan W Nicolson
- Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa.
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Simonová MP, Kmeť V, Lauková A. Occurrence and characterization of Paenibacillus sp. isolated from rabbits. Folia Microbiol (Praha) 2014; 60:97-101. [PMID: 25231136 DOI: 10.1007/s12223-014-0345-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 09/04/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Monika Pogány Simonová
- Institute of Animal Physiology, Slovak Academy of Sciences, Šoltésovej 4-6, 040 01, Košice, Slovakia,
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Jaouani I, Abbassi M, Alessandria V, Bouraoui J, Ben Salem R, Kilani H, Mansouri R, Messadi L, Cocolin L. High inhibition of Paenibacillus larvae
and Listeria monocytogenes
by Enterococcus
isolated from different sources in Tunisia and identification of their bacteriocin genes. Lett Appl Microbiol 2014; 59:17-25. [DOI: 10.1111/lam.12239] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/16/2014] [Accepted: 02/17/2014] [Indexed: 11/27/2022]
Affiliation(s)
- I. Jaouani
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Bab Saadoun Tunis Tunisia
| | - M.S. Abbassi
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Bab Saadoun Tunis Tunisia
| | - V. Alessandria
- Dipartimento di Scienze Agrarie; Forestali e Alimentari; Università di Torino; Grugliasco Turin Italy
| | - J. Bouraoui
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Bab Saadoun Tunis Tunisia
| | - R. Ben Salem
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Bab Saadoun Tunis Tunisia
| | - H. Kilani
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Bab Saadoun Tunis Tunisia
| | - R. Mansouri
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Bab Saadoun Tunis Tunisia
| | - L. Messadi
- National School of Veterinary Medicine; Department of Microbiology and Immunology; La Manouba University; Sidi Thabet Tunisia
| | - L. Cocolin
- Dipartimento di Scienze Agrarie; Forestali e Alimentari; Università di Torino; Grugliasco Turin Italy
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Novy P, Kloucek P, Rondevaldova J, Havlik J, Kourimska L, Kokoska L. Thymoquinone vapor significantly affects the results of Staphylococcus aureus sensitivity tests using the standard broth microdilution method. Fitoterapia 2014; 94:102-7. [PMID: 24508861 DOI: 10.1016/j.fitote.2014.01.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/22/2014] [Accepted: 01/23/2014] [Indexed: 11/19/2022]
Abstract
The broth microdilution (BMD) method is widely used for the determination of minimum inhibitory concentrations of antimicrobial agents, including volatile oils and their components. In this series of various experiments, we have demonstrated the influence of thymoquinone (TQ) vapor on the results of the BMD test performed with Staphylococcus aureus as a model organism. The spread of vapor from the TQ containing wells (32-512 μg/mL) caused the complete inhibition of staphylococcal growth in adjoining wells initially containing bacterium-inoculated pure Mueller-Hinton broth only and thus produced false positive results of the test. The ability of TQ to pass into the adjoined wells was subsequently confirmed by gas chromatography-mass spectrometry, whereas TQ at concentrations up to 84 μg/mL was detected in these wells after five hours. Based on these results, we suppose that vapors of TQ as well as of other naturally occurring volatile compounds and their mixtures (for example essential oils and plant extracts) can significantly influence results of the standard BMD assay. These observations, therefore, call for development of new appropriate BMD method suitable for assessment of antimicrobial activity of volatile substances.
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Affiliation(s)
- Pavel Novy
- Department of Quality of Agricultural Products, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 21 Prague 6, Suchdol, Czech Republic.
| | - Pavel Kloucek
- Department of Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 21 Prague 6, Suchdol, Czech Republic.
| | - Johana Rondevaldova
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamycka 129, 165 21 Prague 6, Suchdol, Czech Republic.
| | - Jaroslav Havlik
- Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 21 Prague 6, Suchdol, Czech Republic.
| | - Lenka Kourimska
- Department of Quality of Agricultural Products, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 21 Prague 6, Suchdol, Czech Republic.
| | - Ladislav Kokoska
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamycka 129, 165 21 Prague 6, Suchdol, Czech Republic.
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Alipour G, Dashti S, Hosseinzadeh H. Review of pharmacological effects of Myrtus communis L. and its active constituents. Phytother Res 2014; 28:1125-36. [PMID: 24497171 DOI: 10.1002/ptr.5122] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 12/26/2013] [Accepted: 01/04/2014] [Indexed: 11/10/2022]
Abstract
Myrtle (Myrtus communis L., Myrtaceae) is a medicinal herb used worldwide in traditional medicine. A large number of components have been isolated from this herb. Polyphenols, myrtucommulone (MC), semimyrtucommulone (S-MC), 1,8-cineole, α-pinene, myrtenyl acetate, limonene, linalool and α-terpinolene are among the compounds considered to be the main biologically active components. Various parts of this herb such as its berries, leaves and fruits have been used extensively as a folk medicine for several centuries. The herb is used traditionally for the treatment of disorders such as diarrhea, peptic ulcer, hemorrhoid, inflammation, pulmonary and skin diseases, although clinical and experimental studies suggest that it possesses a broader spectrum of pharmacological and therapeutic effects such as antioxidative, anticancer, anti-diabetic, antiviral, antibacterial, antifungal, hepatoprotective and neuroprotective activity. The present review attempts to give an overview on the phytochemical, pharmacological, toxicological and clinical studies of total extracts and the most relevant active ingredients of M. communis.
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Affiliation(s)
- Ghazal Alipour
- Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, I.R., Iran
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40
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Boligon AA, Brum TFD, Zadra M, Piana M, Alves CFDS, Fausto VP, Júnior VDSB, Vaucher RDA, Santos RCV, Athayde ML. Antimicrobial activity of Scutia buxifolia against the honeybee pathogen Paenibacillus larvae. J Invertebr Pathol 2013; 112:105-7. [DOI: 10.1016/j.jip.2012.11.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 11/01/2012] [Accepted: 11/17/2012] [Indexed: 10/27/2022]
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Yoshiyama M, Wu M, Sugimura Y, Takaya N, Kimoto-Nira H, Suzuki C. Inhibition of Paenibacillus larvae by lactic acid bacteria isolated from fermented materials. J Invertebr Pathol 2012; 112:62-7. [PMID: 23000777 DOI: 10.1016/j.jip.2012.09.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 08/20/2012] [Accepted: 09/12/2012] [Indexed: 12/12/2022]
Abstract
We evaluated the potential application of lactic acid bacteria (LAB) isolated from fermented feeds and foods for use as probiotics against Paenibacillus larvae, the causal agent of American foulbrood (AFB) in vitro. We also assessed the ability of LAB to induce the expression of antimicrobial peptide genes in vivo. Screening of the 208 LAB isolated from fermented feeds and foods revealed that nine strains inhibited the in vitro growth of P. larvae. The LAB strains were identified by 16S rRNA gene sequencing as Enterococcus sp., Weissella sp. and Lactobacillus sp. These strains were screened for their abilities of immune activation in honeybees by real-time RT-PCR using antimicrobial peptide genes as markers. After oral administration of several of the screened LAB to larvae and adults, the transcription levels of antimicrobial peptide genes, such as abaecin, defensin and hymenoptaecin, were found to increase significantly. These findings suggested that selected LAB stimulate the innate immune response in honeybees, which may be useful for preventing bacterial diseases in honeybees. This is the first report to characterize the probiotic effects of LAB isolated from fermented feeds and foods in honeybees.
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Affiliation(s)
- Mikio Yoshiyama
- Honeybee Research Unit, Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, 2 Ikenodai, Tsukuba, Ibaraki 305-0901, Japan.
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Kloucek P, Smid J, Flesar J, Havlik J, Titera D, Rada V, Drabek O, Kokoska L. In vitro Inhibitory Activity of Essential Oil Vapors against Ascosphaera apis. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700237] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This work evaluates the in vitro inhibitory activity of 70 essential oils (EOs) in the vapor phase for the control of Chalkbrood disease caused by Ascosphaera apis Maassen ex Claussen (Olive et Spiltoir). Two wild strains isolated from infected honey bee colonies together with one standard collection strain were tested by the microatmosphere method. From 70 EOs, 39 exhibited an antifungal effect against A. apis standard and wild strains. The greatest antifungal action was observed for EO vapors from Armoracia rusticana, followed by Thymus vulgaris, Cymbopogon flexosus, Origanum vulgare and Allium sativum. An investigation of chemical composition by GC-MS revealed, that the most active EOs contained allyl isothiocyanate, citral, carvacrol and diallyl sulfides as the main constituents. The chemical composition plays a key role, as activities of different EOs from the same botanical species were different according to their composition.
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Affiliation(s)
- Pavel Kloucek
- Department of Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, Praha 6-Suchdol, 165 21, Czech Republic
| | - Jakub Smid
- Department of Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, Praha 6-Suchdol, 165 21, Czech Republic
| | - Jaroslav Flesar
- Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, Praha 6-Suchdol, 165 21, Czech Republic
| | - Jaroslav Havlik
- Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, Praha 6-Suchdol, 165 21, Czech Republic
| | - Dalibor Titera
- Bee Research Institute at Dol, Libcice nad Vltavou 252 66, Czech Republic
| | - Vojtech Rada
- Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, Praha 6-Suchdol, 165 21, Czech Republic
| | - Ondrej Drabek
- Department of Soil Science and Soil Protection, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, Praha 6-Suchdol, 165 21, Czech Republic
| | - Ladislav Kokoska
- Department of Crop Science and Agroforestry, Institute of Tropics and Subtropics, Czech University of Life Sciences Prague, Kamycka 129, 165 21 Prague 6-Suchdol, Czech Republic
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 21, Prague 6-Suchdol, Czech Republic
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Sabaté DC, Gonzaléz MJ, Porrini MP, Eguaras MJ, Audisio MC, Marioli JM. Synergistic effect of surfactin from Bacillus subtilis C4 and Achyrocline satureioides extracts on the viability of Paenibacillus larvae. World J Microbiol Biotechnol 2011; 28:1415-22. [PMID: 22805922 DOI: 10.1007/s11274-011-0941-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Accepted: 11/02/2011] [Indexed: 12/01/2022]
Abstract
The aim of this work was to determine the in vitro effect of the mixture between the lipopeptide surfactin, synthesized by Bacillus subtilis C4 (strain isolated from honey) and the most active vegetal extract from Achyrocline satureioides, a traditional medicinal plant, on local strains of Paenibacillus larvae, the agent of American Foulbrood in honeybees. Five P. larvae strains isolated in Córdoba, Argentina, were phenotypically characterized. These and 12 other P. larvae strains from different regions of Argentina were analysed. The antimicrobial activities of the essential oil, hexane (HE) and benzene extracts from A. satureioides were assessed against P. larvae and the HE showed the highest anti-P. larvae activity. A combination of the biosurfactant surfactin, produced by B. subtilis C4, and the HE of A. satureioides revealed a synergistic action on P. larvae. The effective surfactin concentration in the mixture decreased from 32 to 1 μg ml(-1) and the HE concentration from 32 to 4 μg ml(-1), values similar or equal to minimal inhibitory concentrations observed for oxytetracycline. The fractional inhibitory concentration index confirmed synergism in 4 strains and partial synergism in one strain. The combination of surfactin synthesized by B. subtilis C4 and the HE from A. satureioides could be a natural alternative to help beekeepers to combat the American foulbrood agent P. larvae.
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Affiliation(s)
- D C Sabaté
- Instituto de Investigaciones para la Industria Química (INIQUI), Salta, Argentina
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Benitez LB, Velho RV, de Souza da Motta A, Segalin J, Brandelli A. Antimicrobial factor from Bacillus amyloliquefaciens inhibits Paenibacillus larvae, the causative agent of American foulbrood. Arch Microbiol 2011; 194:177-85. [PMID: 21858429 DOI: 10.1007/s00203-011-0743-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 07/08/2011] [Accepted: 08/02/2011] [Indexed: 10/17/2022]
Abstract
Bacillus amyloliquefaciens LBM 5006 produces an antimicrobial factor active against Paenibacillus larvae, a major honeybee pathogen. The antagonistic effect and the mode of action of the antimicrobial factor were investigated. The antibacterial activity was produced starting at mid-logarithmic growth phase, reaching its maximum during the stationary phase. Exposure of cell suspensions of P. larvae to this antimicrobial resulted in loss of cell viability and reduction in optical density associated with cell lysis. Scanning electron microscopy showed damaged cell envelope and loss of protoplasmic material. The antimicrobial factor was stable for up to 80°C, but it was sensitive to proteinase K and trypsin. Mass spectrometry analysis indicates that the antimicrobial activity is associated with iturin-like peptides. The antimicrobial factor from B. amyloliquefaciens LBM 5006 showed a bactericidal effect against P. larvae cells and spores. This is the first report on iturin activity against P. larvae. This antimicrobial presents potential for use in the control of American foulbrood disease.
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Affiliation(s)
- Lisianne Brittes Benitez
- Laboratório de Bioquímica e Microbiologia Aplicada, Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Chaieb K, Kouidhi B, Jrah H, Mahdouani K, Bakhrouf A. Antibacterial activity of Thymoquinone, an active principle of Nigella sativa and its potency to prevent bacterial biofilm formation. Altern Ther Health Med 2011; 11:29. [PMID: 21489272 PMCID: PMC3095572 DOI: 10.1186/1472-6882-11-29] [Citation(s) in RCA: 171] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 04/13/2011] [Indexed: 11/25/2022]
Abstract
Background Thymoquinone is an active principle of Nigella sativa seed known as "Habbah Al-Sauda" in Arabic countries and "Sinouj" in Tunisia. Bacterial biofilms tend to exhibit significant tolerance to antimicrobials drugs during infections. Methods The antibacterial activity of Thymoquinone (TQ) and its biofilm inhibition potencies were investigated on 11 human pathogenic bacteria. The growth and development of the biofilm were assessed using the crystal violet (CV) and the 2, 3-bis [2-methyloxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide (XTT) reduction assay. Results TQ exhibited a significant bactericidal activity against the majority of the tested bacteria (MICs values ranged from 8 to 32 μg/ml) especially Gram positive cocci (Staphylococcus aureus ATCC 25923 and Staphylococcus epidermidis CIP 106510). Crystal violet assay demonstrated that the minimum biofilm inhibition concentration (BIC50) was reached with 22 and 60 μg/ml for Staphylococcus aureus ATCC 25923 and Staphylococcus epidermidis CIP 106510 respectively. In addition our data revealed that cells oxidative activity was influenced by TQ supplementation. In the same way, TQ prevented cell adhesion to glass slides surface. Conclusion The ability of TQ to prevent biofilm formation warrants further investigation to explore its use as bioactive substances with antibiofilm potential.
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