flushing/hypoxia

Many lower vertebrates (reptilian and amphibian species) are capable of surviving natural episodes of hypoxia and hypothermia. It is by specific metabolic adaptations that anurans are able to tolerate prolonged exposure to harsh environmental stresses. In this study, it was hypothesized that livers

Organic matter and nutrient loading into aquatic ecosystems affects ecosystem structure and function and can result in eutrophication and hypoxia. Hypoxia is often attributed to anthropogenic pollution and is not common in unpolluted rivers. Here we show that organic matter loading from hippopotami

In mice of different ages from the OF1 mouse strain, males are less resistant than females to a normobaric hypoxia obtained in a few hours by a progressive lowering of normoxic PO2 with nitrogen flushing. Injection of estradiol to castrated males and spayed females increases hypoxic survival.

In the literature, a variety of ways have been used to obtain anoxia, and most often results are compared between studies without taking into consideration how anoxia has been obtained. Here, we provide a comprehensive study of two types of anoxia, using a proteomics approach to compare changes in

We sampled the Klang estuary during the inter-monsoon and northeast monsoon period (July-Nov 2011, Oct-Nov 2012), which coincided with higher rainfall and elevated Klang River flow. The increased freshwater inflow into the estuary resulted in water column stratification that was observed during both

Twenty-four hours of N(2) induced anoxia induced global perturbations on protein expression in rainbow trout hypodermal fibroblasts cell line. Anoxia was obtained by depleting the medium of O(2) by flushing with N(2), and protein changes were studied by 2-DE coupled with MS providing quantitative

Cold preservation and reperfusion of liver during transplantation are necessary steps in the procedure but which are also associated with damage to the organ. One aspect of this damage is thought to concern up-regulation of inflammatory markers, such as the adhesion molecule intercellular adhesion

OBJECTIVE To study the effect of DN (dominant-negative) Ku70 and reoxygenation on the hypoxia-induced cell-kill. METHODS Cell lines were human colorectal carcinoma HCT8 and HT29 cells and their respective derivatives, v-HCT8 and v-HT29 infected with DNKu70-containing adenovirus. Cells were plated in

Four solutions for initial flushing of kidneys prior to transplantation were tested under conditions designed to resemble those of clinical cadaveric donor renal transplantation. The experimental model was the dog subjected to bilateral nephrectomy with renal autograft. Kidney grafts were subjected

The effect of anoxia on subsequent uptake and transport of K, Rb, and Na was examined with seedlings of barley (Hordeum vulgare L.), corn (Zea mays L.), and tall fescue (Lolium x Festuca hybrid derivative) to further our understanding of xylem loading. Roots were incubated in solutions depleted of

In order to differentiate the effects of swelling and anoxia on kidney function, a canine experimental model is used. After complete liberation of kidneys and their vessels from adjacent tissues, each kidney is submitted to 10 min of hypotonic flushing, or to 60 min of normothermic anoxia. Swelling

OBJECTIVE Hypoxia, which activates the hypoxia inducible factor-1 alpha (HIF-1alpha) pathway, is a common feature in malignant gliomas and has been linked with tumor cell survival and therapy resistance. In this study, we examined the effect of antisense inhibition of HIF-1alpha on the survival,

Experiments have indicated that skin perfusion in mice is sensitive to reductions in environmental O2 availability. Specifically, a reduction in skin-surface PO2 attenuates transcutaneous O2 diffusion, and hence epidermal O2 supply. In response, epidermal HIF-1α expression increases and facilitates

Prostaglandin type E1 has been administered on 4 different occasions in a newborn with a ductus-dependent complex congenital cyanotic heart disease. Dramatic improvement of the arterial oxygen concentration followed each prostaglandin infusion. Increased pulmonary circulation and widening of the

Synchronized Chinese hamster cells were irradiated in air and in nitrogen at various points in the cell cycle. The irradiations were carried out after flushing with air or nitrogen with the medium removed from the mono-layer of cells. Under these conditions the dose-modifying factor, or oxygen