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The biomechanical implications of lacunar and perilacunar microarchitecture on microdamage accumulation in cortical bone.
Acta Bioeng Biomech
June 2024
3School of Mechanical Engineering, Yanshan University, Hebei, China.
: This study aimed to explore how the microarchitectural features of lacunae and perilacunar zones impact the biomechanics of microdamage accumulation in cortical bone, crucial for understanding bone disorders' pathogenesis and developing preventive measures. : Utilizing the phase field finite element method, the study analyzed three bone unit models with varying microarchitecture: one without lacunae, one with lacunae and one including perilacunar zones, to assess their effects on cortical bone's biomechanical properties. : The presence of lacunae was found to increase microcrack initiation risk, acting as nucleation points and accelerating microcrack propagation.
View Article and Find Full Text PDFNegative non-deployment emotions, substance use, and marital satisfaction among never-deployed military couples.
Mil Psychol
January 2025
Department of Community Health and Health Behavior, University at Buffalo, Buffalo, New York, USA.
Among military service members, the experience of never-deploying can create a negative affective state (i.e., "non-deployment emotions"; (NDE)) that increases stress and may contribute to higher rates of substance use among Reserve and National Guard soldiers.
View Article and Find Full Text PDFIn Situ-Forming, Adhesive, and Antioxidant Chitosan Hydrogels for Accelerated Wound Healing.
Biomacromolecules
January 2025
State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China.
Antioxidant hydrogels that can provide a moist environment and scavenge reactive oxygen species have emerged as highly potential wound dressing materials. In situ-forming and good tissue adhesiveness will make them more desirable, as they can fill the irregular wound defect, stick to the wound, and offer intimate contact with the wound. Herein, a hydrogel dressing combining in situ-forming, good tissue adhesiveness, and excellent antioxidant capabilities was developed by simply conjugating dopamine onto carboxymethyl chitosan.
View Article and Find Full Text PDFCell-free assays reveal that the HIV-1 capsid protects reverse transcripts from cGAS immune sensing.
PLoS Pathog
January 2025
Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah, United States of America.
Retroviruses can be detected by the innate immune sensor cyclic GMP-AMP synthase (cGAS), which recognizes reverse-transcribed DNA and activates an antiviral response. However, the extent to which HIV-1 shields its genome from cGAS recognition remains unclear. To study this process in mechanistic detail, we reconstituted reverse transcription, genome release, and innate immune sensing of HIV-1 in a cell-free system.
View Article and Find Full Text PDFChangeover method for biosafety cabinets using ozone gas.
PLoS One
January 2025
Center for Stem Cell and Regenerative Medicine, Institute of Science Tokyo, Bunkyo-ku, Tokyo, Japan.
This study evaluated the effectiveness of a biosafety cabinet equipped with an ozone generator, particularly during the transition periods between the production of cell products. As living cell products cannot undergo sterilization, maintaining an aseptic manufacturing environment is paramount. Raw materials, often derived from human tissues, are frequently contaminated with various resident bacteria, necessitating environmental resets after each process.
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