Oxygen Availability in ZnxCe1–xO2 Nanocrystallites as a Function of Zinc Concentration

2021 ◽  
Author(s):  
Kshitij Gurung ◽  
Travis H. James ◽  
Angel Torres ◽  
Alexander Sinitskii ◽  
Marjorie A. Langell
Keyword(s):  
Zinc Concentration ◽  
Oxygen Availability

A Case of Acquired Zinc Deficiency due to Low Zinc Concentration in Maternal Breast Milk

2008 ◽  
Vol 70 (4) ◽  
pp. 402-405 ◽  
Author(s):  
Chie HIRABE ◽  
Chisato HOSOKAWA ◽  
Masakazu TAKAHARA ◽  
Satoko SHIBATA ◽  
Satoshi TAKEUCHI ◽  
...  
Keyword(s):  
Breast Milk ◽  
Zinc Deficiency ◽  
Zinc Concentration

scholarly journals Associations Between Intestinal Mucosal Function and Changes in Plasma Zinc Concentration Following Zinc Supplementation

2013 ◽  
Vol 57 (3) ◽  
pp. 348-355 ◽  
Author(s):  
K. Ryan Wessells ◽  
Sonja Y. Hess ◽  
Noel Rouamba ◽  
Zinewendé P. Ouédraogo ◽  
Mark Kellogg ◽  
...  
Keyword(s):  
Zinc Concentration ◽  
Zinc Supplementation ◽  
Plasma Zinc ◽  
Plasma Zinc Concentration

Brain adaptation to chronic hypobaric hypoxia in rats

1992 ◽  
Vol 72 (6) ◽  
pp. 2238-2243 ◽  
Author(s):  
J. C. LaManna ◽  
L. M. Vendel ◽  
R. M. Farrell
Keyword(s):  
Blood Flow ◽  
Motor Cortex ◽  
Microvessel Density ◽  
Hypobaric Hypoxia ◽  
Regional Blood Flow ◽  
Oxygen Availability ◽  
Sensory Cortex ◽  
Hypoxic Exposure ◽  
Normal Brain ◽  
Tissue Po2

Rats were exposed to hypobaric hypoxia (0.5 atm) for up to 3 wk. Hypoxic rats failed to gain weight but maintained normal brain water and ion content. Blood hematocrit was increased by 48% to a level of 71% after 3 wk of hypoxia compared with littermate controls. Brain blood flow was increased by an average of 38% in rats exposed to 15 min of 10% normobaric oxygen and by 23% after 3 h but was not different from normobaric normoxic rats after 3 wk of hypoxia. Sucrose space, as a measure of brain plasma volume, was not changed under any hypoxic conditions. The mean brain microvessel density was increased by 76% in the frontopolar cerebral cortex, 46% in the frontal motor cortex, 54% in the frontal sensory cortex, 65% in the parietal motor cortex, 68% in the parietal sensory cortex, 68% in the hippocampal CA1 region, 57% in the hippocampal CA3 region, 26% in the striatum, and 56% in the cerebellum. The results indicate that hypoxia elicits three main responses that affect brain oxygen availability. The acute effect of hypoxia is an increase in regional blood flow, which returns to control levels on continued hypoxic exposure. Longer-term effects of continued moderate hypoxic exposure are erythropoiesis and a decrease in intercapillary distance as a result of angiogenesis. The rise in hematocrit and the increase in microvessel density together increase oxygen availability to the brain to within normal limits, although this does not imply that tissue PO2 is restored to normal.

Sputum zinc concentration and clinical outcome in older asthmatics

Respirology ◽  
2011 ◽  
Vol 16 (3) ◽  
pp. 459-466 ◽  
Author(s):  
LATA JAYARAM ◽  
SANJEEV CHUNILAL ◽  
SANDY PICKERING ◽  
RICHARD E. RUFFIN ◽  
PETER D. ZALEWSKI
Keyword(s):  
Clinical Outcome ◽  
Zinc Concentration
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