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Artificial cell-free system for the sustainable production of acetoin from bioethanol.
Bioresour Technol
January 2025
Department of Chemical, Biological and Environmental Engineering, Engineering School, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain. Electronic address:
The present work introduces and validates an artificial cell free system for the synthesis of acetoin from ethanol, representing a greener alternative to conventional chemical synthesis. The one pot multi-enzymatic system, which employs pyruvate decarboxylase from Zymobacter palmae (ZpPDC), alcohol dehydrogenase from Saccharomyces cerevisiae (ScADH), and NADH oxidase from Streptococcus pyogenes (SpNOX), achieves nearly 100 % substrate conversion and reaction yield within 6 h under optimal conditions (pH 7.5, enzyme activities: ZpPDC 100 U·mL, ScADH 50 U·mL, SpNOX 127 U·mL, and 1 mM NAD).
View Article and Find Full Text PDFEnhanced pathogen identification among patients with clinically suspected meningitis.
S Afr J Infect Dis
December 2024
Division of Medical Microbiology, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Background: Delayed or incorrect treatment of meningitis may result in adverse patient outcomes. However, laboratory testing in resource-limited settings is often limited to conventional diagnostic methods. We explored the utility of syndromic molecular assays for diagnosis.
View Article and Find Full Text PDFSplenic Infarctions and Sepsis Secondary to Ceftriaxone-Associated Acute Pancreatitis: A Case of Interdisciplinary Collaboration.
Cureus
December 2024
Department of Medicine, Division of Infectious Disease, University of Illinois at Chicago, Peoria, USA.
The spleen plays a crucial role in filtering aging blood cells and defending against encapsulated microorganisms. While not essential for survival, splenic dysfunction can lead to severe complications, including organ failure, infection, and death. This case study examines a rare presentation of drug-induced splenic septic thrombophlebitis secondary to pancreatitis caused by an adverse reaction to ceftriaxone.
View Article and Find Full Text PDFUsing Minimally Invasive Tissue Sampling and Determination of Cause of Death to Establish Etiologies of Community Respiratory Deaths Among Zambian Infants and Children.
J Pediatric Infect Dis Soc
January 2025
Bill & Melinda Gates Foundation, Seattle, Washington, USA.
In low-to-middle-income countries, acute lower respiratory infection (ALRI) remains the leading infectious cause of death among infants and children under 5 years old. Case-control studies based on upper respiratory sampling have informed current understandings of ALRI etiologies; in contrast, minimally invasive tissue sampling (MITS) offers a method of directly interrogating lower respiratory tract pathogens to establish etiologic distributions. This study performed in the postmortem setting used MITS and a Determination of Cause of Death (DeCoDe) panel to elucidate the causes of fatal pneumonia in the community in Lusaka, Zambia.
View Article and Find Full Text PDFStreptococcus mutans serotyping, collagen-binding genes and Candida albicans in dentin carious lesions: a molecular approach.
Clin Oral Investig
January 2025
Department of Operative Dentistry, Postgraduate Program in Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil.
Objectives: This cross-sectional study aimed to evaluate the occurrence of Streptococcus spp., Streptococcus mutans, its serotypes (c, e, f, and k), collagen-binding genes (cnm/cbm), and Candida albicans in medium deep (D2) and deep (D3) dentin carious lesions of permanent teeth.
Materials And Methods: Carious dentin was collected from D2 (n = 23) and D3 (n = 24) lesions in posterior teeth from 31 individuals.
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