Bacterial endophytes from Artemisia nilagirica (Clarke) Pamp., with antibacterial efficacy against human pathogens

2019 ◽  
Vol 135 ◽  
pp. 103624 ◽  
Author(s):  
A. Ashitha ◽  
S.J. Midhun ◽  
M.A. Sunil ◽  
T.U. Nithin ◽  
E.K. Radhakrishnan ◽  
...  
2021 ◽  
Vol 16 (5) ◽  
pp. 291-303
Author(s):  
Vania Delfino ◽  
Carmela Calonico ◽  
Antonella Lo Nostro ◽  
Lara Mitia Castronovo ◽  
Sara Del Duca ◽  
...  

Background: Rising number of multidrug-resistant human pathogens demands novel antibiotics: to this aim, unexplored natural sources are investigated to find new compounds. In this context, bacteria associated to medicinal plants, including Phragmites australis, might represent an important source of antimicrobial compounds. Materials & methods: In the present work, 21 bacterial endophytes isolated from P. australis roots were tested, by cross-streaking, for their inhibitory activity against 36 multidrug-resistant pathogens isolated from food, clinical patients and hospitals. Results & conclusion: Seven endophytes, belonging to Pseudomonas and Stenotrophomonas, were able to inhibit the growth of most of the target strains. In conclusion, this preliminary work could pave the way for the discovery of new antibiotics against superbugs.


1997 ◽  
Vol 77 (01) ◽  
pp. 001-010 ◽  
Author(s):  
Michael D P Boyle ◽  
Richard Lottenberg

SummaryIn this review the interaction between invasive human pathogens expressing plasmin(ogen) receptors and/or producing plasminogen activators with the human plasmin(ogen) system is described. Evidence is presented for multiple mechanisms by which human pathogens can acquire a surface bound form of plasmin that cannot be regulated by host serpins. The potential importance of these pathways in providing the organisms with the ability to cross tissue barriers is discussed.


2018 ◽  
Vol 17 (5) ◽  
pp. 101-110 ◽  
Author(s):  
Agata Goryluk-Salmonowicz ◽  
Aleksandra Orzeszko-Rywka ◽  
Monika Piórek ◽  
Hanna Rekosz-Burlaga ◽  
Adrianna Otłowska ◽  
...  

Author(s):  
Е.Н. Ильина ◽  
Е.И. Олехнович ◽  
А.В. Павленко

С течением времени подходы к изучению резистентности к антибиотикам трансформировались от сосредоточения на выделенных в виде чистой культуры патогенных микроорганизмах к исследованию резистентности на уровне микробных сообществ, составляющих биотопы человека и окружающей среды. По мере того, как продвигается изучение устойчивости к антибиотикам, возникает необходимость использования комплексного подхода для улучшения информирования мирового сообщества о наблюдаемых тенденциях в этой области. Все более очевидным становится то, что, хотя не все гены резистентности могут географически и филогенетически распространяться, угроза, которую они представляют, действительно серьезная и требует комплексных междисциплинарных исследований. В настоящее время резистентность к антибиотикам среди патогенов человека стала основной угрозой в современной медицине, и существует значительный интерес к определению ниши, в которых бактерии могут получить гены антибиотикорезистентности, и механизмов их передачи. В данном обзоре мы рассматриваем проблемы, возникшие на фоне широкого использования человечеством антибактериальных препаратов, в свете формирования микрофлорой кишечника резервуара генов резистентности. Over the time, studies of antibiotic resistance have transformed from focusing on pathogenic microorganisms isolated as a pure culture to analysis of resistance at the level of microbial communities that constitute human and environmental biotopes. Advancing studies of antibiotic resistance require an integrated approach to enhance availability of information about observed tendencies in this field to the global community. It becomes increasingly obvious that, even though not all resistance genes can geographically and phylogenetically spread, the threat they pose is indeed serious and requires complex interdisciplinary research. Currently, the antibiotic resistance of human pathogens has become a challenge to modern medicine, which is now focusing on determining a potential source for bacterial genes of drug resistance and mechanisms for the gene transmission. In this review, we discussed problems generated by the widespread use of antibacterial drugs in the light of forming a reservoir of resistance genes by gut microflora.


Author(s):  
Laura Moreno-Mesonero ◽  
Jorge García Hernández ◽  
Yolanda Moreno ◽  
PATRICIA SOLER

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