4.5 Article

Antimicrobial activity of a chimeric enzybiotic towards Staphylococcus aureus

期刊

JOURNAL OF BIOTECHNOLOGY
卷 139, 期 1, 页码 118-123

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jbiotec.2008.09.003

关键词

Bacteriophage; Enzybiotic; Gentamicin; Staphylococcus aureus

资金

  1. North-South Dialogue Scholarship [92-15/EZA/2005]
  2. Austrian Academic Exchange Service (OAD).

向作者/读者索取更多资源

Phage lytic enzymes (enzybiotics) have gained attention as prospective tools to eradicate Gram-positive pathogens resistant to antibiotics. Attempts to purify the P16 endolysin of Staphylococcus aureus phage P68 were unsuccessful owing to the poor solubility of the protein. To overcome this limitation, we constructed a chimeric endolysin (P16-17) comprised of the inferred N-terminal D-alanyl-glycyl endopeptidase domain and the C-terminal cell wall targeting domain of the S. aureus phage P16 endolysin and the P17 minor coat protein, respectively. The domain swapping approach and the applied purification procedure resulted in soluble P16-17 protein, which exhibited antimicrobial activity towards S. aureus. In addition, P16-17 augmented the antimicrobial efficacy of the antibiotic gentamicin. This synergistic effect could be useful to reduce the effective dose of aminoglycoside antibiotics. (c) 2008 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Infectious Diseases

Construction and Activity Testing of a Modular Fusion Peptide against Enterococcus faecalis

Salim Manoharadas, Mohammad Altaf, Naushad Ahmad, Abdulwahed Fahad Alrefaei, Basel F. F. Al-Rayes

Summary: The emergence of antibiotic resistance in enterococci is a global concern, and almost all enterococci show significant levels of resistance to various antibiotics. Therefore, it is crucial to develop new antibacterial agents against enterococci.

ANTIBIOTICS-BASEL (2023)

Article Chemistry, Medicinal

An Enzybiotic Cocktail Effectively Disrupts Preformed Dual Biofilm of Staphylococcus aureus and Enterococcus faecalis

Salim Manoharadas, Naushad Ahmad, Mohammad Altaf, Abdulwahed Fahad Alrefaei, Basel F. Al-Rayes

Summary: This study evaluated the activity of two engineered enzybiotics against a dual biofilm formed by Staphylococcus aureus and Enterococcus faecalis. The cocktail of proteins showed an additive effect in rapidly disrupting the preformed dual biofilm, resulting in over 90% dispersion within 3 hours of treatment. Furthermore, it effectively reduced bacterial cells embedded in the biofilm matrix by over 90% within the same time frame. This is the first successful use of an engineered enzybiotic cocktail to impede the structural integrity of a dual biofilm.

PHARMACEUTICALS (2023)

Article Chemistry, Physical

A detailed study on the selection of borderline features for accurate mechanism description of the adsorption of different pesticide molecules under different temperature ranges

Ana Carolina Ferreira Piazzi Fuhr, Yasmin Vieira, Marcos Leandro Silva Oliveira, Luis Felipe Oliveira Silva, Salim Manoharadas, Asad Nawaz, Guilherme Luiz Dotto

Summary: Mathematical models are important in data acquisition, but it is challenging to choose the most accurate model. This study uses statistical physics modeling and thermodynamic calculations to demonstrate patterns in adsorption processes and highlights the importance of understanding the physical meaning of each parameter.

JOURNAL OF MOLECULAR LIQUIDS (2023)

Article Multidisciplinary Sciences

Influence of gelatin type on physicochemical properties of electrospun nanofibers

Bruna Silva de Farias, Francisca Zuchoski Rizzi, Eduardo Silveira Ribeiro, Patricia Silva Diaz, Tito Roberto Sant'Anna Cadaval Junior, Guilherme Luiz Dotto, Mohammad Rizwan Khan, Salim Manoharadas, Luiz Antonio de Almeida Pinto, Glaydson Simoes dos Reis

Summary: This study explores the fabrication of nanofibers using different types of gelatins, highlighting their potential to produce nanofibers with distinct physicochemical properties.

SCIENTIFIC REPORTS (2023)

Article Pharmacology & Pharmacy

Resensitisation of Methicillin-Resistant Staphylococcus aureus to Conventional Antibiotics in the Presence of an Engineered Enzybiotic

Salim Manoharadas, Basel F. Al-Rayes, Mohammed Abdulaziz M. Almuzaini, Yasser Muteq Almohammadi

Summary: This study successfully created a chimeric enzybiotic against MRSA and tested its efficiency in combination with antibiotics. This finding could pave the way for the development of similar peptides to be used in combination with conventional antibiotics.

PHARMACEUTICS (2023)

Article Food Science & Technology

Fabrication and Characterization of PVA-WPI Based Nanofiber Mats for Improved Viability of Lactobacillus rhamnosus GG

Noor Akram, Muhammad Afzaal, Farhan Saeed, Adnan Ahmad, Ali Imran, Aftab Ahmed, Yasir Abbas Shah, Fakhar Islam, Suliman Yousef Alomar, Salim Manoharadas, Asad Nawaz

Summary: In this study, whey protein-based nanofibers were fabricated to encapsulate Lactobacillus rhamnosus. The nanofibers were blended using different ratios of PVA and WPI, and characterized for various properties. SEM and FTIR analysis showed successful loading of probiotics within the nanofibers, with strong bonding between the encapsulating materials. In vitro and thermal analyses demonstrated significant improvement in the survival of the encapsulated probiotics.
Article Multidisciplinary Sciences

Formulation, characterization and evaluation of gelatin-syringic acid/ zinc oxide nanocomposite for its effective anticancer, antioxidant and anti-inflammatory activities

M. Lavanya, Rajapandiyan Krishnamoorthy, Mohammad A. Alshuniaber, Salim Manoharadas, Chella Perumal Palanisamy, Vishnu Priya Veeraraghavan, Selvaraj Jayaraman, Ponnulakshmi Rajagopal, Ramakrishnan Padmini

Summary: A gelatin-syringic acid/ZnO nanocomposite with antioxidant, anti-inflammatory, and anticancer activities was synthesized and characterized. The nanocomposite exhibited sustained drug release, high antioxidant ability, dose-dependent inhibition of protein denaturation, and non-toxicity in zebrafish. It also inhibited Hep G2 cell viability and increased oxidative stress caused by mitochondrial damage, leading to cell death. Overall, this study suggests that the gelatin-syringic acid/ZnO nanocomposite has potential for the treatment of hepatocellular carcinoma.

JOURNAL OF KING SAUD UNIVERSITY SCIENCE (2023)

Article Nutrition & Dietetics

Effectiveness of locally produced ready to use supplementary food on hemoglobin, anthropometrics, and plasma micronutrients concentrations of 6 to 23 months age children: a non-randomized community-based trial from Pakistan

Aslam Khan, Zia Ul-Haq, Sheraz Fazid, Sadia Fatima, Nawshad Muhammad, Jawad Ahmed, Salim Manoharadas, Sher Zaman Safi, Ijaz Habib, Cecilia Garzon, Yasir Ihtesham, Fareeda Zahid, Fazal Dad, Tanimoune Mahamadou, Nicola M. Lowe

Summary: This study aimed to evaluate the effectiveness of ready-to-use Lipid-based Nutrient Supplement-Medium Quantity (LNS-MQ) on plasma micronutrient status, hemoglobin concentration, and anthropometric measurements. A total of 110 children aged 6 to 23 months were allocated to intervention and control groups. The intervention group received daily ration of LNS-MQ for one year and showed significant improvements in micronutrient status, hemoglobin concentration, and growth parameters.

FRONTIERS IN NUTRITION (2023)

Article Green & Sustainable Science & Technology

Double-Layer Membranes of Chitosan and Sodium Alginate Added to Natural Olive Leaf Extract for Potential Use in Skin Lesions

Larah Gondim Santos Paulino, Luisa Bataglin Avila, Caroline Costa Moraes, Mohammad Rizwan Khan, Salim Manoharadas, Glaydson Simoes dos Reis, Guilherme Luiz Dotto, Gabriela Silveira da Rosa

Summary: This study aims to enhance bilayer membranes by incorporating phytochemical compounds and natural extracts, resulting in improved mechanical and barrier properties. The addition of olive leaf extracts shows significant potential for utilization as wound dressings.

RESOURCES-BASEL (2023)

Article Food Science & Technology

Supplementation of chickpea flour and spinach leaves powder in Nutri bars to overcome iron deficiency in young females

Sidra Akram, Aftab Ahmed, Muhammad Afzaal, Farhan Saeed, Ali Ikram, Aasma Asghar, Salim Manoharadas, Asad Nwaz, Degnet Teferi Asres

Summary: This study evaluated the effect of iron-rich Nutri bars on iron-deficient females and found that they could improve iron status in young women.

INTERNATIONAL JOURNAL OF FOOD PROPERTIES (2023)

Article Multidisciplinary Sciences

Green synthesis and evaluation of anti-microbial, antioxidant, anti-inflammatory, and anti-diabetic activities of silver nanoparticles from Argyreia nervosa leaf extract: An invitro study

Kalaiselvi Krishnamoorthy, Selvaraj Jayaraman, Rajapandiyan Krishnamoorthy, Salim Manoharadas, Mohammad A. Alshuniaber, Biba Vikas, Vishnu Priya Veeraraghavan

Summary: This study aims to develop an environmentally friendly method for isolating silver nanoparticles and investigate their pharmacological properties. The isolated silver nanoparticles using Argyreia nervosa plant leaves showed strong antioxidant, anti-inflammatory, and anti-diabetic activities, as well as significant antibacterial activity against selected pathogens. However, further in vivo research is needed to verify these findings and explore the potential of Argyreia nervosa-mediated silver nanoparticles as a viable drug.

JOURNAL OF KING SAUD UNIVERSITY SCIENCE (2023)

Article Environmental Sciences

Recovery of Ce and La from phosphogypsum leachate by adsorption using grape wastes

Rafaela Nogueira Fontoura da Silva, Paola de Azevedo Mello, Alice Penteado Holkem, Luis Felipe Oliveira Silva, Marcos Leandro Silva Oliveira, Asad Nawaz, Salim Manoharadas, Guilherme Luiz Dotto

Summary: The present research evaluated the use of grape stalk as a bioadsorbent for the adsorption of lanthanum and cerium. The results showed that grape stalk had a porous structure and exhibited good adsorption capacity for these rare earth elements. The study also demonstrated the potential of using grape residue as a promising bioadsorbent for recovering rare earth elements from phosphogypsum leachate.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2023)

Article Environmental Sciences

Carbonaceous adsorbent as green silica by-product applied to the treatment of contaminated effluent by pesticide commonly sprayed on rice cultivation

Juliana Machado Nascimento dos Santos, Fabiola Balzan Dalla Nora, Katia da Boit Martinello, Melissa Gurgel Adeodato Vieira, Asad Nawaz, Luis Felipe Oliveira Silva, Salim Manoharadas, Guilherme Luiz Dotto

Summary: Grain cultivation and its impacts on the environment, specifically the generation of solid waste and the use of agrochemicals, have attracted much attention. This study proposes a novel approach to achieve self-sustainability in rice farming by reusing green silica waste as an adsorbent for treating pesticide-contaminated effluents. The carbonaceous material obtained from burning rice husks and subsequent treatment exhibited promising adsorption properties towards 2,4-dichlorophenoxyacetic acid (2,4-D) pesticide. The findings suggest that this material has the potential to contribute to the sustainable development of rice farming.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2023)

Article Horticulture

Exogenously applied melatonin enhanced chromium tolerance in pepper by up-regulating the photosynthetic apparatus and antioxidant machinery

Muhammad Rizwan, Asad Nawaz, Sana Irshad, Salim Manoharadas

Summary: This study reveals the potential role of melatonin (MEL) in enhancing Cr stress tolerance in pepper seedlings. MEL supplementation significantly mitigated the phytotoxic effects of Cr on root morphology, gas exchange elements, and leaf photosynthetic capacity, and restored the growth of pepper seedlings.

SCIENTIA HORTICULTURAE (2024)

Article Materials Science, Textiles

Blossoming Beauty: Enhancing Natural Fibres with Calendula Officinalis L. Flower Dye and Assessing Color Fastness with Microbial Properties

R. Mariselvam, A. J. A. Ranjitsingh, Ponani Kaja Mideen, Salim Manoharadas, Rajapandiyan Krishnamoorthy, Mohammad A. Alshuniaber

Summary: This research focused on fixing Calendula officinalis plant flower dye on various natural fibers using mordants, resulting in different colors. Mordants can tonify the colors of Calendula officinalis dye and improve the light and water fastness of dyed natural fibers.

FIBRES & TEXTILES IN EASTERN EUROPE (2023)

暂无数据