Results 41 to 50 of about 6,622,719 (397)

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Advantages of Hyperbaric Oxygen Treatment for Type 2 Diabetes Mellitus in Mice: Involvement of Leptin

Journal of Diabetes Research
Conclusion: Our study offers a rationale for using serum leptin as a predictor of clinical outcomes of HBOT and elucidates possible reasons why many patients may experience HBOT failure.
Zhounan Zhu, Bin Zhang, Wanyin Wang, Hongjie Yi, Chenggang Zheng, Qinghe Tang   +5 more
doaj   +1 more source

Oxygen sensitive paper [PDF]

, 1973
Paper is impregnated with mixture of methylene blue and ethylenediaminetetraacetic acid. Methylene blue is photo-reduced to leuco-form. Paper is kept isolated from oxygen until ready for use.
Whidby, J. F.
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Expression of Aquaporin-1 and Aquaporin-5 in a Rat Model of High-Altitude Pulmonary Edema and the Effect of Hyperbaric Oxygen Exposure

Dose-Response, 2020
Objective: To investigate the therapeutic roles of hyperbaric oxygen exposure on high-altitude pulmonary edema and to determine whether aquaporin-1 and aquaporin-5 were involved in the pathogenesis of HAPE in rats.
Jiewen Tan MD, Chunjin Gao, Cong Wang PhD, Linlin Ma PhD, Xiaomin Hou PhD, Xuehua Liu PhD, Zhuo Li PhD   +6 more
doaj   +1 more source

Biochemical and Enzymatic Analyses to Understand the Accumulation of γ-Aminobutyric Acid in Wheat Grown under Flooding Stress

Oxygen, 2023
Flooding induces low-oxygen stress, which reduces plant growth. The activity of the γ-aminobutyric acid (GABA) shunt is crucial for plant stress adaptation, in which it acts by changing cytosolic pH, limiting reactive oxygen species production ...
Setsuko Komatsu, Natsuru Nishiyama, Azzahrah Diniyah   +2 more
doaj   +1 more source

Aircrew oxygen system [PDF]

, 1972
Closed-loop rebreather system which includes pilot provides oxygen for use in aircraft by safe, reliable method of low weight and size and reduces expense of ground equipment.
Babinsky, A. D., Kiraly, R. J., Wynveen, R. A.   +2 more
core   +1 more source

Plastron respiration using commercial fabrics [PDF]

, 2014
A variety of insect and arachnid species are able to remain submerged in water indefinitely using plastron respiration. A plastron is a surface-retained film of air produced by surface morphology that acts as an oxygen-carbon dioxide exchange surface ...
Cassie, Christopher Hamlett, Comstock, Crisp, Flynn, Glen McHale, Hebets, Hsu, Jin, Joseph Brennan, Joshua Smith, Levi, McHale, Michael Newton, Michielsen, Morris, Neil Shirtcliffe, Roach, Robert Morris, Seymour, Shaun Atherton, Shirtcliffe, Thorpe, Thorpe, Turner   +24 more
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

The Underexplored Landscape of Hypoxia-Inducible Factor 2 Alpha and Potential Roles in Tumor Macrophages: A Review

Oxygen, 2023
Low tissue oxygenation, termed hypoxia, is a characteristic of solid tumors with negative consequences. Tumor-associated macrophages (TAMs) accumulate in hypoxic tumor regions and correlate with worse outcomes in cancer patients across several tumor ...
Kayla J. Steinberger, Timothy D. Eubank
doaj   +1 more source