estrone/hypoxia

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Hypoxia/reoxygenation stress signals an increase in organic anion transporting polypeptide 1a4 (Oatp1a4) at the blood-brain barrier: relevance to CNS drug delivery.

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Cerebral hypoxia and subsequent reoxygenation stress (H/R) is a component of several diseases. One approach that may enable neural tissue rescue after H/R is central nervous system (CNS) delivery of drugs with brain protective effects such as 3-hydroxy-3-methylglutaryl-coenzyme A reductase

Estrogens attenuate neuronal injury due to hemoglobin, chemical hypoxia, and excitatory amino acids in murine cortical cultures.

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A growing body of evidence supports the hypothesis that estrogens may be beneficial in Alzheimer's disease and other neurodegenerative processes. Less is known of their therapeutic potential in acute CNS insults. In this study, we assessed the effect of estrogens in three injury paradigms that may

α-Ketoglutarate-related inhibitors of HIF prolyl hydroxylases are substrates of renal organic anion transporters 1 (OAT1) and 4 (OAT4).

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2-Oxoglutarate or α-ketoglutarate (αKG) is a substrate of HIF prolyl hydroxylases 1-3 that decrease cellular levels of the hypoxia-inducible factor 1α (HIF-1α) in the presence of oxygen. αKG analogs are applied to stabilize HIF-1α even in the presence of oxygen and thus provide a novel therapeutic

Fetal and maternal endocrine responses to reduced uteroplacental blood flow.

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In clinical practice, falling or reduced maternal estrogen levels are commonly regarded as indicators of fetal distress. However, experimental studies in primate animal models demonstrate that changes in maternal estradiol concentrations vary in response to reduced uteroplacental blood flow and are

Extracorporeal perfusion of the human uterus.

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Uterine specimens specially prepared for extracorporeal perfusions (arterial and venous stumps available for catheterization) were perfused with oxygenated Krebs-Ringer bicarbonate-glucose buffer for periods of up to 12 hours to investigate the feasibility of obtaining constant flow, stability of

The Isoquinolone Derived Prolyl Hydroxylase Inhibitor ICA Is a Potent Substrate of the Organic Anion Transporters 1 and 3.

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OBJECTIVE Many cellular responses to hypoxia are mediated by the transcription factor complex hypoxia-inducible factor (HIF). HIF stability is governed by a family of dioxygenases called HIF prolyl hydroxylases (PHDs). Isoquinolone-derived PHD inhibitors, like

Strategies of hemopoietic stress adaptation within the medullary cavity.

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Gravimetric determination of total bone water space was used as an index of available bone marrow space in mice following various specific stressors, i.e., splenectomy, hypoxia, bone fracture, and estrone-induced osteosclerosis. Data was corrected for bone weight and was reported as specific bone

Constraints-based stoichiometric analysis of hypoxic stress on steroidogenesis in fathead minnows, Pimephales promelas.

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In this study, an in silico genome-scale metabolic model of steroidogenesis was used to investigate the effects of hypoxic stress on steroid hormone productions in fish. Adult female fathead minnows (Pimephales promelas) were exposed to hypoxia for 7 days with fish sub-sampled on days 1, 3 and 7 of

Higher estrogen levels during pregnancy in Andean than European residents of high altitude suggest differences in aromatase activity.

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BACKGROUND Uteroplacental hypoxia has been reported to lower estrogen levels in preeclampsia as the result of reduced aromatase activity. OBJECTIVE We asked whether the chronic hypoxia of residence at high altitude in the absence of preeclampsia lowered estrogen, whether such effects differed in

Identification and functional assessment of BCRP polymorphisms in a Korean population.

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The breast cancer resistance protein (BCRP) is a member of the ATP-binding cassette transporters. The aim of the present study was to identify genetic variants of BCRP in Koreans and to assess the functional consequences of BCRP polymorphisms. Twenty single nucleotide polymorphisms (SNP), including

Placental Aromatase Is Deficient in Placental Ischemia and Preeclampsia.

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BACKGROUND Preeclampsia is a maternal hypertensive disorder with uncertain etiology and a leading cause of maternal and fetal mortality worldwide, causing nearly 40% of premature births delivered before 35 weeks of gestation. The first stage of preeclampsia is characterized by reduction of

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