Publications by authors named "M L Kruger"
Hibernating brown bears, due to a drastic reduction in metabolic rate, show only moderate muscle wasting. Here, we evaluate if ATPase activity of resting skeletal muscle myosin can contribute to this energy sparing. By analyzing single muscle fibers taken from the same bears, either during hibernation or in summer, we find that fibers from hibernating bears have a mild decline in force production and a significant reduction in ATPase activity.
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- Impaired calcium (Ca) handling in heart cells is a key feature of heart failure (HF), leading to issues like weakened heart contractions and irregular heartbeats.
- The study used transgenic mice with a mutation affecting a calcium regulator (phospholamban) to understand how defects in calcium cycling contribute to HF, noting that these mice experience severe and fast-progressing heart failure.
- Early treatment aimed at correcting calcium cycling using Raf kinase inhibitor protein (RKIP) was found to delay heart cell damage and improve overall health of the mice, indicating that addressing Ca dynamics early on could be crucial for preventing further complications in heart failure.
Attosecond observations of coherent electron dynamics in molecules and nanostructures can be achieved by combining conventional scanning tunneling microscopy (STM) with ultrashort femtosecond laser pulses. While experimental studies in the subcycle regime are under way, a robust strong-field theory description has remained elusive. Here we devise a model based on the strong-field approximation.
View Article and Find Full Text PDFThe transition from breastmilk to solid foods (weaning) is a decisive stage for the development of the colonic microbiota. However, little is known about how complementary foods influence the composition and function of the colonic microbiota in infants. This systematic review collected evidence of the effect of individual foods on the fecal microbiota of weaning infants (4-12 months old) using five databases: PubMed, CENTRAL, Scopus, Web of Science, and ScienceDirect.
View Article and Find Full Text PDFCancer and Stress: Understanding the Connections and Interventions.
Am J Lifestyle Med
December 2024
Article Synopsis
- - Stress is common in today's society and can negatively impact cancer development and progression; the review examines various studies and guidelines on this issue.
- - It discusses the physiological consequences of stress, including how to assess and manage distress through psychological treatments and lifestyle changes, such as mindfulness, yoga, and exercise.
- - The review highlights the importance of recognizing and treating distress to enhance quality of life for cancer patients, while also noting the need for further research on how distress management affects cancer outcomes and varies by cancer type.