A Heme‐Acquisition Protein Reconstructed with a Cobalt 5‐Oxaporphyrinium Cation and Its Growth‐Inhibition Activity Toward Multidrug‐Resistant Pseudomonas aeruginosa

2021 ◽  
Author(s):  
Asahi Takiguchi ◽  
Erika Sakakibara ◽  
Hiroshi Sugimoto ◽  
Osami Shoji ◽  
Hiroshi Shinokubo
2021 ◽  
Vol 3 (1) ◽  
pp. 20-26
Author(s):  
Suliman Mansour Albalawi ◽  
Abdulrahman K. Al-Asmari ◽  
Syed Rafatullah ◽  
Maysa Mahfoud

  The emergence of antibiotic resistant microorganism strains has become a critical concern in the treatment of infectious diseases and makes the search of an alternative therapy a must. The study was designed to evaluate the in vitro antimicrobial activities of the Moringa peregrina (MP) leave (MPL) and seed (MPS) extracts. Antimicrobial assays were performed using a microplate growth inhibition assay against 11 multidrug-resistant (MDR) strains. Following qualitative analysis, dose-response assays were performed using the MTT colorimetric assay. The results showed a strong correlation between the MPL and MPS extract concentration and growth inhibition (P<0.001). MP extract revealed a remarkable antimicrobial effect and inhibited the growth and survival of MDR pathogens which include Escherichia coli; Pseudomonas aeruginosa; Klebsiella pneumonia; Acinetobacter baumannii; Staphylococcus aureus between (88.6-94.7 %) and between (62.3- 88.7%) against Candida Kefyer; Candida parapsilosis; Candida albicans; Candida glabrata; Aspergillus flavus and Fusarium oxysporum. MIC50 ranging from ≤6.25 to 25 mg/mL. Acinetobacter baumannii and Pseudomonas aeruginosa were the most susceptible to MP extracts (MIC50 < 6.25 mg/mL). These results support the use of MP in Arab traditional medicine as natural antimicrobial agents. Additionally, the use of such naturally occurring adjuvant derived from medicinal plants can be used as an adjuvant with synthetic antibiotics to combat bacterial resistance and to enhance the antibacterial potential. Further studies are recommended on isolation and purification of novel antimicrobial molecules to treat the infections caused by microbes.  


2015 ◽  
Vol 327 ◽  
pp. 504-516 ◽  
Author(s):  
D. Nithyadevi ◽  
P. Suresh Kumar ◽  
D. Mangalaraj ◽  
N. Ponpandian ◽  
C. Viswanathan ◽  
...  

1981 ◽  
Vol 27 (2) ◽  
pp. 216-225 ◽  
Author(s):  
Beatriz M. Nieves ◽  
Francisco Gil ◽  
Francisco J. Castillo

Thirty-four strains corresponding to 16 species of Clostridium were examined for growth inhibition activity and production of phage and bacteriocinlike particles. Twenty-five strains were found to inhibit growth of one or more of the other strains. The widest range of activity corresponded to C. bifermentans 18137 which inhibited growth of 23 strains. Cell-free filtrates of positive cultures were inactive with the exception of the one from C. bifermentans 18137. A wide variety of particles with diverse morphology was observed in lysates of cultures treated with mitomycin C (1 μg/mL).


2004 ◽  
Vol 13 (5) ◽  
pp. 282-296
Author(s):  
Romeo Romagnoli ◽  
Pier Giovanni Baraldi ◽  
Maria Giovanna Pavani ◽  
Francesca Fruttarolo ◽  
Delia Preti ◽  
...  

2003 ◽  
Vol 11 (6) ◽  
pp. 965-975 ◽  
Author(s):  
Pier Giovanni Baraldi ◽  
Italo Beria ◽  
Paolo Cozzi ◽  
Nicoletta Bianchi ◽  
Roberto Gambari ◽  
...  

2018 ◽  
Vol 16 (1) ◽  
pp. 59 ◽  
Author(s):  
Masruri Masruri ◽  
Rekfa Wika Amini ◽  
Mohammad Farid Rahman

Catalytic oxidation of alpha-pinene was investigated using potassium permanganate as an oxidant. The reaction consumed catalyst following stoichiometric amount instead of the catalytic one. The keto-carboxylate compound 2 was afforded as the oxidation product. Further study of its complex compound with copper(II) and zinc(II) was also reported including their activity for inhibiting the growth of Staphylococcus aureus and Escherichia coli. In overall, the complex compound shows important result by inhibiting the bacterial growth.


Sign in / Sign up

Export Citation Format

Share Document