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Mitochondrial respirometry provides a detailed assessment of oxygen consumption within the electron transport system, yet methods detailing respiration from non-invasive samples remain limited. Here, we present a protocol for measuring mitochondrial respiration in cultured buccal cells. We outline procedures for buccal cell collection, primary cell culture, and respirometry calibration, followed by oxygen consumption measurements and cell count for data normalization. This protocol allows reliable evaluation of mitochondrial function from non-invasive buccal cell samples, offering a valuable tool for metabolic investigation.
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http://dx.doi.org/10.1016/j.xpro.2025.104004 | DOI Listing |
Mol Psychiatry
September 2025
Department of Child and Adolescent Psychiatry and Psychology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands.
Epigenetic processes, such as DNA methylation, show potential as biological markers and mechanisms underlying gene-environment interplay in the prediction of mental health and other brain-based phenotypes. However, little is known about how peripheral epigenetic patterns relate to individual differences in the brain itself. An increasingly popular approach to address this is by combining epigenetic and neuroimaging data; yet, research in this area is almost entirely comprised of cross-sectional studies in adults.
View Article and Find Full Text PDFEnviron Int
August 2025
Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
Glyphosate-based herbicides are the most widely applied pesticides worldwide and have been implicated in the development of certain hematologic malignancies; however, the underlying biological mechanisms are not well-understood. High lifetime use of glyphosate-based herbicides, hereafter referred to as glyphosate, was previously associated with mosaic loss of chromosome Y (mLOY), a biomarker of genomic instability potentially linked to cancer and immune dysregulation, in circulating blood of male farmers from a subcohort of the Agricultural Health Study (AHS). Here, we further investigated the association between glyphosate use and mLOY using buccal-derived DNA among 1,868 male pesticide applicators in an independent AHS study.
View Article and Find Full Text PDFRSC Adv
August 2025
National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences Nilore 45650 Islamabad Pakistan
Quantum dots (QDs) have diverse applications, ranging from optics and energy to biomedical. In this study, carbon quantum dots (CQDs) were synthesized using glucose and tryptophan as precursors using one-step microwave (MW) and sand bath (SB) thermal methods, and the CQDs exhibit distinct photoluminescence behaviors. CQD-SB shows enhanced and stable fluorescence despite its amorphous structure, likely due to prolonged thermal treatment, facilitating the formation of robust surface states and stable reaction products.
View Article and Find Full Text PDFAm J Case Rep
August 2025
EcoSense Laboratory and Diagnostic Center, Yerevan, Armenia.
BACKGROUND Down syndrome, or trisomy 21, is one of the most common chromosomal disorders associated with intellectual disability. Prenatal screening is a proactive approach to identify fetuses with common chromosomal abnormalities. Mosaicism is one of the causes of false-negative results in prenatal screening for Down syndrome.
View Article and Find Full Text PDFArch Toxicol
September 2025
Department of Health Sciences (DISSAL), University of Genoa, Via A. Pastore 1, 16132, Genoa, Italy.
Occupational exposure to air pollutants poses a serious health concern for workers, particularly due to potential genotoxic effects. The micronucleus (MN) test is widely recognized as a reliable biomarker of early genetic damage. Although commonly applied to lymphocytes or buccal epithelial cells, the nasal mucosa, being the first site of contact for inhaled toxicants, has received relatively limited attention.
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