Publications by authors named "Murali K Maruthamuthu"

Bioadhesive materials and patches are promising alternatives to surgical sutures and staples. However, many existing bioadhesives do not meet the functional requirements of current surgical procedures and interventions. Here, we present a translational patch material that exhibits instant adhesion to tissues (2.

View Article and Find Full Text PDF

Escherichia coli were engineered to selectively adsorb and recover lithium from the environment by employing a bacterial cell surface display strategy. Lithium binding peptide (LBP1) was integrated into the Escherichia coli membrane protein OmpC. The effect of environmental conditions on the adsorption of lithium by a recombinant strain was evaluated, and lithium particles on the cellular surface were analyzed by FE-SEM and XRD.

View Article and Find Full Text PDF

Surgical meshes composed of bioinert polymers such as polypropylene are widely used in millions of hernia repair procedures to prevent the recurrence of organ protrusion from the damaged abdominal wall. However, post-operative mesh infection remains a significant complication, elevating hernia recurrence risks from 3.6% to 10%, depending on the procedure type.

View Article and Find Full Text PDF

Wound infections with antibiotic-resistant bacteria, particularly the Gram-negative strains, pose a substantial health risk for patients with limited treatment options. Recently topical administration of gaseous ozone and its combination with antibiotics through portable systems has been demonstrated to be a promising approach to eradicate commonly found Gram-negative strains of bacteria in wound infections. However, despite the significant impact of ozone in treating the growing number of antibiotic-resistant infections, uncontrolled and high concentrations of ozone can cause damage to the surrounding tissue.

View Article and Find Full Text PDF

The problematic combination of a rising prevalence of skin and soft tissue infections and the growing rate of life-threatening antibiotic resistant infections presents an urgent, unmet need for the healthcare industry. These evolutionary resistances originate from mutations in the bacterial cell walls which prevent effective diffusion of antibiotics. Gram-negative bacteria are of special consideration due to the natural resistance to many common antibiotics due to the unique bilayer structure of the cell wall.

View Article and Find Full Text PDF

 Jacq. flower extract was used for the synthesis of silver nanoparticles in the current study. Various spectroscopic analyses were used to characterize the synthesized nanoparticles (JIF-AgNPs).

View Article and Find Full Text PDF

Many commercially available pH sensors are fabricated with a glass membrane as the sensing component because of several advantages of glass-based electrodes such as versatility, high accuracy, and excellent stability in various conditions. However, because of their bulkiness and poor mechanical properties, conventional glass-based sensors are not ideal for wearable or flexible applications. Here, we report for the first time the fabrication of a flexible glass-based pH sensor suitable for biomedical and environmental applications where flexibility and stability of the sensor are critical for long-term and real-time monitoring.

View Article and Find Full Text PDF

In this study, two biosurfactant producing Pseudomonas aeruginosa sp. were isolated from motor oil contaminated soil for crude oil, alkane and PAH degradation studies. Metagenomics analysis identified as proteobacteria phyla was the dominant.

View Article and Find Full Text PDF

The main aim of the study was to degrade poly-β-hydroxybutyrate (P(3HB)) in the sequencing batch biofilm reactor (SBBR) using biocatalyst. Enrichment method was used for the isolation of P(3HB) degrading bacteria. These bacterial strains were isolated from the wastewater sludge sample treated with P(3HB) sheets.

View Article and Find Full Text PDF
Article Synopsis
  • Modified a LAMP assay to detect BRD pathogens in cattle using a colorimetric method that can be done on the farm.
  • LAMP offers quicker and cheaper pathogen detection compared to PCR, which typically requires lab equipment and lengthy processing.
  • The new assay shows high sensitivity and specificity, providing results within 60 minutes from nasal swabs, enabling faster diagnostics for cattle producers and veterinarians.
View Article and Find Full Text PDF
Article Synopsis
  • A new paper-based device has been developed for detecting pathogen nucleic acids using a method called loop-mediated isothermal amplification (LAMP), providing visible color changes for easy identification.
  • The device was specifically optimized to detect SARS-CoV-2 in human saliva within 60 minutes, achieving a high sensitivity of 97% and a specificity of 100%.
  • It is designed with multiple reaction zones on special chromatography paper and can be adjusted to identify different pathogens by simply changing the LAMP primers used.
View Article and Find Full Text PDF
Article Synopsis
  • Deep learning can improve the effectiveness of process analytical technologies in the pharmaceutical sector through enhanced Raman spectroscopy tools for microbial contamination detection.
  • A specialized Raman dataset was created, covering common microbial contaminants like those affecting Chinese Hamster Ovary (CHO) cells used in biologics production.
  • The convolutional neural network achieved high classification accuracy (95%-100%) for various single and mixed microbial samples and generated attention maps to identify significant spectral features aiding in species discrimination.
View Article and Find Full Text PDF
Article Synopsis
  • Process Analytical Technology (PAT) for monoclonal antibody production involves advanced methods to analyze cell culture fluids and biotherapeutic molecules.
  • Despite well-developed in-line and near-line systems, challenges remain in detecting viruses, microbial contamination, and integrating deep learning for process monitoring.
  • The review focuses on the current state of PAT in both batch and continuous production, highlighting its potential to enhance the manufacturing of biotherapeutics.
View Article and Find Full Text PDF

In this study, constructed Escherichia coli could efficiently adsorb fenitrothion by displaying a pesticide-binding peptide on it using the anchoring motif OmpC. A codon-optimized, pesticide-binding peptide was attached to the C-terminus of OmpC at loop 7 (993 bp). The efficiency of fenitrothion binding by the monomer peptide was evaluated under different temperatures, pH levels, and fenitrothion concentrations.

View Article and Find Full Text PDF

Peptide-displaying Escherichia coli cells were investigated for use in adsorptive removal of bisphenol A (BPA) both in Luria-Bertani medium including BPA or ATM thermal paper eluted wastewater. Two recombinant strains were constructed with monomeric and dimeric repeats of the 7-mer BPA-binding peptide (KSLENSY), respectively. Greater than threefold increased adsorption of BPA [230.

View Article and Find Full Text PDF

In a cell-surface display (CSD) system, successful display of a protein or peptide is highly dependent on the anchoring motif and the position of the display in that anchoring motif. In this study, a recombinant bacterial CSD system for manganese (Mn) and cobalt (Co) recovery was developed by employing OmpC as an anchoring motif on three different external loops. A portion of Cap43 protein (TRSRSHTSEG) was employed as a manganese and cobalt binding peptide (MCBP), which was fused with OmpC at three different external loops.

View Article and Find Full Text PDF

Gamma-aminobutyric acid is a precursor of nylon-4, which is a promising heat-resistant biopolymer. GABA can be produced from the decarboxylation of glutamate by glutamate decarboxylase. In this study, a synthetic scaffold complex strategy was employed involving the Neurospora crassa glutamate decarboxylase (GadB) and GABA antiporter (GadC) to improve GABA production.

View Article and Find Full Text PDF

For the construction of an efficient copper waste treatment system, a cell surface display strategy was employed. The copper adsorption ability of recombinant bacterial strains displaying three different copper binding peptides were evaluated in LB Luria-Bertani medium (LB), artificial wastewater, and copper phthalocyanine containing textile dye industry wastewater samples. Structural characteristics of the three peptides were also analyzed by similarity-based structure modeling.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_session0lc73bt6f44ci3gnsb5tfpmr7rog0s0n): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once