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Basic Science and Pathogenesis.
Alzheimers Dement
December 2024
Department of Radiology, miami, FL, USA.
Background: Clearance of brain toxins occurs during sleep, although the mechanism remains unknown. Previous studies implied that the intracranial aqueductal cerebrospinal fluid (CSF) oscillations are involved, but no mechanism was suggested. The rationale for focusing on the aqueductal CSF oscillations is unclear.
View Article and Find Full Text PDFEffect of low-level laser therapy on proliferation and cytotoxicity of mouse fibroblasts and human fibroblasts: An study.
J Indian Soc Periodontol
December 2024
Department of Periodontics, College of Dental Sciences, Davanagere, Karnataka, India.
Background: Diode laser is known for its biostimulatory effects on various cell populations such as osteoblasts and fibroblasts. The usage of low-level laser therapy for photobiomodulation depends on its type, emission wavelength, and energy selected. Previously performed studies have determined its effect on cell proliferation and cytotoxicity; however, the results were inconsistent.
View Article and Find Full Text PDFAssociation of handgrip strength asymmetry and weakness with intrinsic capacity impairment among older adults in China.
Exp Gerontol
December 2024
Department of Population Health and Aging Science, School of Population Medicine and Public Health, Chinese Academy of Medical Sciences/Peking Union Medical College, No.31, Road 3rd, Bei-Ji-Ge, Dongcheng District, Beijing 100730, China. Electronic address:
Background: Declining intrinsic capacity (IC) significantly impacts health outcomes in aging populations. While weak handgrip strength (HGS) is associated with IC impairment, the role of HGS asymmetry remains unclear, especially among older Chinese cohorts.
Methods: We included participants aged ≥60 years from the 2015 wave of the China Health and Retirement Longitudinal Study (CHARLS).
Effect of incomplete line defect size on energy localization and harvesting in phononic crystals.
J Acoust Soc Am
December 2024
School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou, 730070, China.
The high electrical output performance of the phononic crystal (PnC)-based piezoelectric energy harvesting (PEH) system is of great research value in self-powered applications. This work presents the effect of incomplete line defect size on elastic wave energy localization and harvesting. The results show that for a given 7 × 5 supercell when the incomplete line defect reaches the second to sixth layer, the energy localization and harvesting performance show a changing trend of first increasing and then decreasing; when the incomplete line defect reaches the 4th, 5th, 3rd, 2nd, and 6th layers of the supercell, respectively, the performance of PEH systems shows a trend from large to small.
View Article and Find Full Text PDFIncreased Pulse Wave Velocity as a Predictor of Intraoperative Hypotension in Hypertensive Patients Undergoing Spinal Anaesthesia.
J Coll Physicians Surg Pak
December 2024
Department of Anaesthesiology and Reanimation, Faculty of Medicine, Aydin Adnan Menderes University, Aydin, Turkiye.
Article Synopsis
- The study aimed to determine if pulse wave velocity (PWV) measured before surgery could predict hypotension during spinal anaesthesia in patients over 30 years old.
- Conducted at a Turkish university hospital, it compared patients with hypertension (HT group) to those with normal preoperative blood pressure (control group) during lower extremity surgeries.
- Results indicated that higher PWV was associated with increased rates of hypotension during spinal anaesthesia, suggesting PWV could serve as a reliable biomarker for predicting hypotensive episodes in hypertensive patients.
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