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Choroidal thickening and retinal dopamine increase in mice at high altitude.
Exp Eye Res
January 2025
Department of Ophthalmology, The Second Hospital &Clinical Medical School, Lanzhou University, Gansu, 730000, China. Electronic address:
The mechanisms underlying the low incidence of myopia at high altitudes remain unclear. Choroidal thickness and the dopaminergic system have been shown to be closely associated with myopia development. This study aimed to investigate the effects of high altitude exposure on choroidal thickness and the dopaminergic system.
View Article and Find Full Text PDFThe effect of carbohydrates with different levels of digestibility on energy metabolism in vivo under hypobaric hypoxic conditions.
Carbohydr Polym
March 2025
State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China.
Current strategies for improving energy supply in hypobaric hypoxic environments are limited. Therefore, this study investigates the effects of four carbohydrates with different levels of digestibility on energy metabolism in vivo in hypobaric hypoxic environments. First, we characterized the four types of carbohydrates.
View Article and Find Full Text PDFRight ventricular strain impairment due to hypoxia in patients with COPD: a post hoc analysis of two randomised controlled trials.
Open Heart
January 2025
Respiratory Medicine, University Hospital Zurich, Zurich, Switzerland
Background: Hypoxic pulmonary vasoconstriction leads to an increase in pulmonary artery pressure (PAP) and potentially right heart failure in healthy individuals and patients with respiratory diseases. Previous studies in patients with chronic obstructive pulmonary disease (COPD) exposed to hypobaric hypoxia have shown an increase in PAP, while traditional echocardiographic parameters revealed only minimal changes at high altitude. Speckle-tracking-derived analysis is potentially more sensitive to assess right ventricular (RV) function and we used this method to investigate the impact on RV function of patients with COPD ascending to high altitude and compared the results with the traditional echocardiographic parameters.
View Article and Find Full Text PDFOptimization of hypobaric and ultrasonic processing of persimmon rhamnogalacturonan-I to enhance drug-digestion interactions.
Int J Biol Macromol
January 2025
Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández, 03202 Elche, Alicante, Spain. Electronic address:
The biological activity of polysaccharides used for nutraceuticals/drug excipients has been a neglected area of study. This work deals with the preparation, optimization, characterization, and evaluation of persimmon (Diospyros kaki Thunb.) fruit by-products and the study of the resultant dietary fiber (DF) interaction with other compounds, using acetaminophen as a model.
View Article and Find Full Text PDFChronic intermittent hypobaric hypoxia alleviates early-stage posttraumatic osteoarthritis via NF-κB/Nrf2 pathway in mice.
J Orthop Surg Res
December 2024
Department of Orthopaedic Trauma, Hebei Medical University Third Hospital, Ziqiang Road No.139, Shijiazhuang, Hebei Province, 050051, China.
Background: Posttraumatic osteoarthritis (PTOA) is directly associated with early acute articular cartilage injury. Inhibition of cartilage destruction immediately following joint damage can effectively slow or prevent PTOA progression. Therefore, we sought to determine intervention targets and therapeutic strategies in the acute stage of cartilage injury.
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