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Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) is an excellent tool for bacterial identification. It allows high throughput, sensitive and specific applications in clinical diagnostics and environmental research. Currently, there is no optimal standardized protocol for sample preparation and culture conditions to profile bacteria. The performance of MALDI-TOF MS is affected by several variables, such as sample preparation, culture media and culture conditions, incubation time/growth stage, incubation temperature, high salt content, blood in the culture media, and others. This review thus aims to clarify why a uniformed protocol is not plausible, to assess the effects these factors have on MALDI-TOF MS identification score, and discuss possible optimizations for its methodology, in relation to specific bacterial representatives and strain requirements.
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http://dx.doi.org/10.1002/mas.21739 | DOI Listing |
Anim Reprod Sci
September 2025
Department of Biomedical & Clinical Sciences (BKV), BKH/Obstetrics & Gynecology, Faculty of Medicine and Health Sciences, Linköping University, Linköping SE-58185, Sweden.
Embryo transfer (ET) is a valuable reproductive technology in pigs, albeit its efficiency remains significantly lower than that of natural mating or artificial insemination (AI), owing to high embryonic death rates. Critical for embryo survival and pregnancy success is the placenta, which supports conceptus development through nutrient exchange, hormone production, and immune modulation. Alterations in placental development and function may therefore underlie the reduced efficiency of ET.
View Article and Find Full Text PDFDiscov Nano
September 2025
Department of Rehabilitation Medicine, Rehabilitation Medical Center, Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China.
Immunoelectron Microscopy (IEM) is a technique that combines specific immunolabeling with high-resolution electron microscopic imaging to achieve precise spatial localization of biomolecules at the subcellular scale (< 10 nm) by using high-electron-density markers such as colloidal gold and quantum dots. As a core tool for analyzing the distribution of proteins, organelle interactions, and localization of disease pathology markers, it has irreplaceable value, especially in synapse research, pathogen-host interaction mechanism, and tumor microenvironment analysis. According to the differences in labeling sequence and sample processing, the IEM technology system can be divided into two categories: the first is pre-embedding labeling, which optimizes the labeling efficiency through the pre-exposure of antigenic epitopes and is especially suitable for the detection of low-abundance and sensitive antigens; the second is post-embedding labeling, which relies on the low-temperature resin embedding (e.
View Article and Find Full Text PDFDiscov Nano
September 2025
RRU 709, Department of Clinical Pharmacology, Advanced Centre for Training, Research and Education in Cancer, Kharghar, Navi Mumbai, India.
In this study, we investigated the influence of ultrasonic frequency during ultrasound-assisted chemical bath deposition (UCBD) on the surface morphology and electrochemical performance of CoO:MnO@CoMnO composite flexible electrodes for supercapacitor applications. By systematically varying the ultrasonic frequency (1.0-2.
View Article and Find Full Text PDFSaudi Dent J
September 2025
Oral Biology Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
To compare the efficacy of using bone marrow mesenchymal stem cell (BM-MSC) exosomes and injectable platelet rich fibrin (i-PRF) on the submandibular salivary glands (SMGs) of aged albino rats in restoring salivary gland structure and function. A total of 40 healthy male albino rats were used, two for obtaining the BM-MSCs, 10 for i-PRF preparation and seven adult rats (6-8 months old) represented the control group (Group 1). The remaining 21 rats were aged (18-20 months old) and divided into three groups of seven rats each; (Group 2): received no treatment, (Group 3): each rat received a single intraglandular injection of BM-MSC exosomes (50 μg/kg/dose suspended in 0.
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