Antibiotic resistance in potentially bacteriocinogenic probiotic bacteria in aquaculture environments          下载免费PDF全文

Juliana A Resende  Marina L Borges  Kelly D Pacheco  Izabella H Ribeiro  Dioneia E Cesar  Vânia L Silva  Cláudio G Diniz  Ana Carolina M Apolônio 《Aquaculture Research》2017,48(5):2113-2119

Bacteriocin‐producing bacteria in aquaculture may prevent spreading of potentially pathogenic microorganisms, and could be used as an alternative to the empirical use of antimicrobial drugs, especially for prophylaxis. Bacteriocinogenic bacteria inoculated as probiotics should not carry undesirable traits, such as antibiotic resistance. This study aimed to find potentially bacteriocinogenic bacteria in an aquaculture system and evaluate their antimicrobial susceptibility patterns. Selective cultures for enterobacteria, non‐fermenting Gram‐negative rods and Gram‐positive cocci were obtained from water samples before bacterial isolation and biochemical identification. Overall, 160 representative strains were recovered and for 57 antagonism was observed against selected strains such as Staphylococcus aureus, with antagonism being expressed better on Brain Heart Infusion medium. After exclusion of interfering factors, bacteriocin or bacteriocin‐like substances were suggested to be related to the antagonism observed. Higher drug‐resistant rates were observed among potentially bacteriocinogenic bacteria for different antimicrobials of clinical relevance. Although antibiotic resistance is a global health problem and bacteriocins are attractive alternatives to classical antibiotic even to multiresistant bacteria, the data obtained suggest that bacteriocin‐producing bacteria may harbour resistance genes available for transference in different environments. From the ecological and biotechnological perspective, antimicrobial susceptibility tests must be always performed when prospecting potentially bacteriocinogenic bacteria as probiotic candidates in the environment.  相似文献   

Evaluation of Scymnus nubilus (Coleoptera: Coccinellidae) as a biological control agent against Aphis spiraecola and Cinara juniperi (Hemiptera: Aphididae)     

Roberto Meseguer Rosagro  Isabel Borges  Virgilio Vieira  Gemma Pons Sol  Antnio O Soares 《Pest management science》2020,76(2):818-826

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Biogenic Amines and the Antioxidant Capacity of Juice and Wine from Brazilian Hybrid Grapevines     

Gomez  Hector Alonzo Gomez  Marques  Marcia Ortiz Mayo  Borges  Cristine Vanz  Minatel  Igor Otavio  Monteiro  Gean Charles  Ritschel  Patricia Silva  Zanus  Mauro Celso  Diamante  Marla Silvia  Kluge  Ricardo Alfredo  Lima  Giuseppina Pace Pereira 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(2):258-264

Plant Foods for Human Nutrition - Some biogenic amines (BAs) are used as quality markers in grape-derived products. The prolife of 9 BAs was determined in juices and wines elaborated from hybrid...  相似文献   

Benzoxazoles as novel herbicidal agents     

Diego P Sangi  Yuri G Meira  Natlia M Moreira  Thais A Lopes  Mathias P Leite  Milton E Pereira‐Flores  Elson S Alvarenga 《Pest management science》2019,75(1):262-269

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Moritz Schiff,Charles Sherrington,border cells,frogs, cats and a zebra with abnormal clinical signs     

Alexandre S. Borges 《Equine Veterinary Education》2023,35(2):78-81

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Hypotensive and vasorelaxant effects of ethanolic extract from Jatropha gossypiifolia L. in rats     

Abreu IC  Marinho AS  Paes AM  Freire SM  Olea RS  Borges MO  Borges AC 《Fitoterapia》2003,74(7-8):650-657

The present work was carried out to examine the hypotensive effects of ethanolic extract (EE) from Jatropha gossypiifolia L. The oral administration of EE (125 or 250 mg kg(-1) day(-1)) caused a significant and dose-dependent reduction of the systolic blood pressure. The concentration-response curves to norepinephrine (NE) or Ca(2+) were non-parallelly shifted to the right and the maximum contractile responses were concentration dependently depressed by EE (0.1 or 0.5 mg/ml) in endothelium-deprived mesenteric artery. The cumulative additions of EE (0.1-30 mg/ml) caused a concentration-dependent relaxant response in endothelium-deprived mesenteric artery precontracted with NE or Ca(2+). In conclusion, our results have shown that the EE from J. gossypiifolia L. can elicit hypotension, by oral via, in conscious normotensive rats and vasorelaxant activity on rat mesenteric rings precontracted with NE or Ca(2+).  相似文献   

Inferring tropical popcorn gene pools based on molecular and phenotypic data     

Gabriel Borges Mundim  José Marcelo Soriano Viana  Ciro Maia  Geísa Pinheiro Paes  Rodrigo Oliveira DeLima  Mágno Sávio Ferreira Valente 《Euphytica》2015,202(1):55-68

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Influence of experimental inflammatory response on hepatic hepcidin gene expression and plasma iron concentration in sheep     

Badial PR  Oliveira-Filho JP  Cunha PH  Araújo JP  Peiró JR  Divers TJ  Winand NJ  Borges AS 《Veterinary immunology and immunopathology》2011,141(1-2):157-161

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Right‐sided laryngeal hemiplegia and Horner's syndrome in a horse     

M. I. P. Palumbo  J. J. Moreira  G. Olivo  C. R. Neto  M. D. Pyles  M. J. Watanabe  A. S. Borges 《Equine Veterinary Education》2011,23(9):448-452

This study describes right laryngeal hemiplegia (LH) and right‐sided Horner's syndrome (HS) in a horse. The average temperature of the face was 3.5°C higher on the right compared with the left side, as determined by thermographic imaging. The syndrome occurred following an episode of right mid‐cervical cellulitis due to inadvertent perijugular deposition of gentamicin.  相似文献   

Epidemiology, clinical signs, histopathology and molecular characterization of canine leproid granuloma: a retrospective study of cases from Brazil     

Conceição LG  Acha LM  Borges AS  Assis FG  Loures FH  Fonseca e Silva F 《Veterinary dermatology》2011,22(3):249-256

Thirty-eight cases of canine leproid granuloma were diagnosed between 2000 and 2008. Diagnosis was based upon clinical and histopathological findings and the presence of acid-fast bacilli in skin sections. The clinical lesions were localized predominantly on the pinnae and included papules, plaques and nodules, with or without ulceration. Boxer dogs were the breed most affected. Histopathological findings included nodular to diffuse pyogranulomatous, lymphoplasmocytic inflammatory infiltrates, with or without necrosis, localized in the dermis or subcutaneous tissue. The bacillary loading and morphology were variable among the lesions analysed. There was no significant correlation between bacterial load and histopathological pattern, dominant type of inflammatory infiltration or the amount of necrosis or giant cells. No correlation was observed between giant cells and histopathological pattern. In the majority of cases where a PCR-based assay was done, a novel mycobacterium species as the main aetiological agent was identified, as reported in previous studies.  相似文献