J Appl Physiol (1985)
Exercise Physiology Research Group, Department of Movement Sciences, KU Leuven, Leuven , Belgium.
Published: August 2018
Due to lack of low-cost and convenient measurement procedures, uncontrolled changes in spontaneous physical activity (SPA) level often are insufficiently considered as a confounding factor in rodent studies. Nonetheless, alterations in SPA can significantly impact on a wide range of physiological measurements. Therefore, we developed an accurate, low-cost video tracking procedure to allow routine assessment of SPA in the home cage of experimental animals (i.e., mice) and in the absence of any distress that might cause alterations in SPA. SPA parameters acquired (movement distance, movement time, and movement speed) with the novel tracking system were identical to those simultaneously obtained with a high-end and well-validated movement-tracking device (mean error = 0.15 ± 0.07%, r = 0.99, P < 0.001). To further validate the setup, we also demonstrated caffeine-induced stimulation of SPA (195% more activity compared with vehicle, P < 0.01), we adequately reproduced typical SPA fluctuations inherent to day/night cycles (146 and 702% more active during nocturnal compared with diurnal cycle for Balb/c and C57BL/6J mice, respectively, P < 0.001), and we confirmed previously documented SPA differences between animal strains (24% less activity in C57BL/6J mice compared with Balb/c mice, P < 0.05). Taken together, we provide data to prove that this novel low-cost methodology can be conveniently used in any mouse experiment where uncontrolled changes in SPA due to experimental interventions might confound data interpretation. By analogy, the system can be used to document a beneficial impact of therapeutic interventions on SPA in any disease mouse model. NEW & NOTEWORTHY We developed a low-cost procedure to routinely measure SPA in mice. The procedure maintains normal SPA because the animals continue to stay in their home cage in the absence of any external manipulation by the investigators and under habitual dark/light ambient conditions. This novel methodology can be conveniently used in any mouse experiment to quantify experimentally induced alterations in SPA or to assess natural variations in SPA that might confound data interpretation.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1152/japplphysiol.00058.2018 | DOI Listing |
Cancer Cell
January 2025
Cancer Systems Biology Laboratory, The Francis Crick Institute, London NW1 1AT, UK; Centre for Cancer Evolution, Bart's Cancer Institute, Queen Mary University London, London EC1M 6AU, UK. Electronic address:
Fewer than 50% of metastatic deficient mismatch repair (dMMR) colorectal cancer (CRC) patients respond to immune checkpoint inhibition (ICI). Identifying and expanding this patient population remains a pressing clinical need. Here, we report that an interferon-high immunophenotype locally enriched in cytotoxic lymphocytes and antigen-presenting macrophages is required for response.
View Article and Find Full Text PDFJ Clin Oncol
January 2025
Fred Saad, MD, University of Montreal, Montreal, QC, Canada; Egils Vjaters, MD, P. Stradinš Clinical University Hospital, Riga, Latvia; Isabella Testa, MD, Bayer S.p.A, Milan, Italy; and Kunhi Parambath Haresh, MD, All India Institute of Medical Sciences, New Delhi, India.
Surg Technol Int
December 2024
Department of Gynecology, Palacios Clinic for Women's Health, Madrid, Spain.
Functional and aesthetic aberrations of labia majora are poorly described in scientific literature, and there is a lack of standardization and algorithms for treatment. The labia majora differs from the labia minora in that it has transitional epithelium, fascia, erectile tissue, and adipose components connected to crural, pelvic, and perineal structures. Non-surgical treatments, such as radiofrequency and light-based therapy, must match the symptoms and target these unique structures to have an effect.
View Article and Find Full Text PDFCochrane Database Syst Rev
January 2025
Behaviour and Health Research Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK.
Background: Overconsumption of food and consumption of any amount of alcohol increases the risk of non-communicable diseases. Calorie (energy) labelling is advocated as a means to reduce energy intake from food and alcoholic drinks. However, there is continued uncertainty about these potential impacts, with a 2018 Cochrane review identifying only a small body of low-certainty evidence.
View Article and Find Full Text PDFUpdates Surg
January 2025
Division of General Surgery, Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
The standardization of preoperative imaging in primary hyperparathyroidism is one of the current challenges of endocrine surgery. A correct localization of the hypersecretory gland by neck ultrasound and 99mTc-sestamibi (MIBI) scintigraphy are not sufficiently sensitive in some cases. In recent years, CT-4D, 18F-Fluorocholine PET/CT, and radio-guided parathyroidectomy have come into common use.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!
© LitMetric 2025. All rights reserved.