PubMed Journals Articles About "Ephedrine Phenylephrine Preeclampsia" RSS

18:51 EST 18th January 2019 | BioPortfolio

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Showing "Ephedrine Phenylephrine Preeclampsia" PubMed Articles 1–25 of 240

Exploring the neuromechanism of chronic ephedrine addiction in rhesus monkeys: a behavioural and brain resting-state fMRI study.

Ephedrine is thought to exert behavioural effects primarily through actions on the central nervous system. However, the neuromechanism underlying the effects of ephedrine addiction still remains unclear. Our study aimed to establish chronic ephedrine addiction models in rhesus monkeys and to investigate the neuromechanism of chronic ephedrine addiction using the behavioural methods combined with resting-state blood oxygenation level dependent-functional magnetic resonance imaging (BOLD-fMRI). Monkeys in the...

Phenylephrine, a common cold remedy active ingredient, suppresses uterine contractions through cAMP signalling.

Regulation of uterine contractility is an important aspect of women's health. Phenylephrine, a selective agonist of the α-adrenoceptor and a potent smooth muscle constrictor, is widely used in women even during pregnancy to relieve cold-related symptoms, to treat postpartum haemorrhoid, and during routine eye exams. We performed isometric tension recordings to investigate the effect of phenylephrine on mouse uterine contractility. Phenylephrine decreased spontaneous and oxytocin-induced contractions in non...

Hypermethylation of delta-like homolog 1/maternally expressed gene 3 loci in human umbilical veins: insights into offspring vascular dysfunction born after preeclampsia.

Increasing epidemiological studies have confirmed the association between maternal preeclampsia and elevated blood pressure in their offspring. Though case-control or cohort studies have demonstrated long-term outcomes for the offspring of preeclampsia, it is still a question that how these changes were caused by genetic reasons or by preeclampsia itself.

Assessing the accuracy of intracameral phenylephrine preparation in cataract surgery.

Unpreserved phenylephrine is often used as an off-licence intracameral surgical adjunct during cataract surgery to assist with pupil dilation and/or stabilise the iris in floppy iris syndrome. It can be delivered as a neat 0.2 ml bolus of either 2.5 or 10% strength, or in a range of ad-hoc dilutions. We wished to assess the accuracy of intracameral phenylephrine preparation in clinical practice.

The Hemodynamic Effects of Intracavernosal Phenylephrine for the Treatment of Ischemic Priapism.

We sought to evaluate whether the administration of phenylephrine (PE) at concentrations higher than those described in guidelines resulted in any significant changes in vital signs or impacted outcomes.

Association of imbalanced sex hormone production with excessive procoagulation factor SerpinF2 in preeclampsia.

Preeclampsia, a serious pregnancy-associated syndrome, is the leading cause of maternal and perinatal morbidity and mortality. Significant exacerbation of the hypercoagulation status as well as imbalanced steroid hormones have been reported in developed preeclampsia. However, it remains unclear whether the two pathological changes are directly associated.

Enhanced separation behavior of ephedrine in organic solution by nanofiltration mass transfer model.

Based on the nanofiltration mass transfer model, the enhanced separation behavior of ephedrine in organic solution was studied. In the experiment, the sensitive region of ethanol concentration and pH on the rejection of ephedrine was screened out by Box-Behnken central composite experiment design. Furthermore, to analyze the separation regularity of ephedrine and organic solution, the correlation between mass transfer coefficient and concentration of organic solvent was fitted with the changed organic solut...

Application of metabolomics to preeclampsia diagnosis.

Preeclampsia is a multifactorial disorder defined by hypertension and increased urinary protein excretion during pregnancy. It is a significant cause of maternal and neonatal deaths worldwide. Despite various research efforts to clarify pathogenies of preeclampsia and predict this disease before beginning of symptoms, the pathogenesis of preeclampsia is unclear. Early prediction and diagnosis of women at risk of preeclampsia has not markedly improved. Therefore, the objective of this study was to perform a ...

Terminal Complement Activation in Preeclampsia.

To evaluate whether C5b-9 concentrations in blood and urine are increased in preeclampsia with severe features.

Characteristics and severity of preeclampsia in young and elderly gravidas with hypertensive disease.

Advanced maternal age (AMA) is associated with increased risk for preeclampsia, however, a paucity of data exists regarding the characteristics of the disease in this age group. Our aim was to compare the characteristics and severity of preeclampsia in older and younger gravidas.

Risk of Ischemic Placental Disease in Relation to Family History of Preeclampsia.

 To assess the risk of ischemic placental disease (IPD) including preeclampsia, small for gestational age (SGA), and abruption, in relation to preeclampsia in maternal grandmother, mother, and sister(s).

The direct and sustained consequences of severe placental hypoxia on vascular contractility.

Preeclampsia is a major health problem in human pregnancy, severely complicating 5-8% of all pregnancies. The emerging molecular mechanism is that conditions like hypoxic stress trigger the release of placental messengers into the maternal circulation, which causes preeclampsia. Our objective was to develop an in vitro model, which can be used to further elucidate the molecular mechanisms of preeclampsia and which might be used to find a remedy.

A Case Report of Preeclampsia Causing Severe Hyponatremia: Rare or Rarely Reported?

Preeclampsia presenting as severe hyponatremia is an enigma of modern obstetric practice. The hyponatremia can cause severe maternal neurological morbidity, including cerebral edema and seizures. Neonates, with serum sodium reflecting maternal levels, are also at risk. Despite this, the literature remains ambiguous about its incidence, the pathophysiology is poorly understood, and guidelines on preeclampsia (including those of the American College of Obstetricians and Gynecologists) do not discuss the issue...

Role of dyslipidemia in preeclampsia - a review of lipidomic analysis of blood, placenta, syncytiotrophoblast microvesicles and umbilical cord artery from women with preeclampsia.

Preeclampsia is a complex disorder and the pathogenesis of it is still not fully understood. The most commonly accepted theory of pathogenesis assumes that there occurs impaired trophoblastic invasion and failure in spiral artery remodeling. Nowadays, obesity becomes one of the most important, modifiable risk factors for the development of preeclampsia. Despite research into the condition, predicting which women with risk factors will develop preeclampsia remains problematic. Emerging evidence suggests that...

Preeclampsia and academic performance in children: A nationwide study from Iceland.

Hypertensive disorders complicate up to 10% of pregnancies. Evidence suggests a potential association between maternal hypertensive disorders during pregnancy, particularly preeclampsia, and adverse neurodevelopment in the offspring, but existing studies are subject to limitations. We aimed to assess whether in-utero exposure to preeclampsia/eclampsia negatively impacts academic performance at ages 9, 12 and 15 years.

Comparison of the ED50 and ED95 of Intrathecal Bupivacaine in Parturients Undergoing Cesarean Delivery With or Without Prophylactic Phenylephrine Infusion: A Prospective, Double-Blind Study.

While prophylactic phenylephrine infusions during cesarean delivery are often used to counteract the sympathectomy associated with spinal anesthesia, their use has been associated with decreased rostral spread of local anesthetic. The purpose of this study was to determine the median effective dose (ED50) and 95% effective dose (ED95) of intrathecal hyperbaric bupivacaine for cesarean delivery in the presence and absence of prophylactic phenylephrine infusion.

Efficacy Of Phenylephrine Infusion Verses Colloid Preloading In Resolving Hypotension Due To Spinal Anaesthesia During Caesarean Section.

Spinal anaesthesia causes hypotension that is countered through various methods. Phenylephrine is a vasoconstrictor and haemocoel increases the intravascular vascular volume; both have an effect in preventing this hypotension; but their comparison has not been done in local setting.

Autophagy-Based Diagnosis of Pregnancy Hypertension and Preeclampsia.

This commentary highlights the article by Aoki et al that shows that Atg7 deficiencyâ€"mediated placental autophagy imbalance may contribute towards preeclampsia.

Maternal Height and Risk of Preeclampsia among Race/Ethnic Groups.

 Shorter maternal height has been associated with preeclampsia risk in several populations. It has been less evident whether an independent contribution to the risk exists from maternal height consistently across different races/ethnicities. We investigated associations between maternal height and risk of preeclampsia for different races/ethnicities.

Maternal serum sestrin 2 levels in preeclampsia and their relationship with the severity of the disease.

To investigate sestrin 2 (SESN2) levels in preeclampsia (PE) cases and uncomplicated pregnancies.

Portfolio Analysis on Preeclampsia and Pregnancy-associated Hypertension Research Funded by the National Heart, Lung and Blood Institute.

Chronic hypertension and preeclampsia are the most common complications of pregnancy. To clarify the contributions of the National Heart, Lung and Blood Institute (NHLBI) to the field and identify potential research gaps, we performed portfolio analysis of awards related to preeclampsia and pregnancy-associated hypertension. A list of National Institutes of Health-funded awards between fiscal years 2008-present was obtained through an NIH RePORTER search using the following terms: "preeclampsia" and "pregna...

Loss of placental growth factor ameliorates maternal hypertension and preeclampsia in mice.

Preeclampsia remains a clinical challenge due to its poorly understood pathogenesis. A prevailing notion is that increased placental production of soluble fms-like tyrosine kinase-1 (sFlt-1) causes the maternal syndrome by inhibiting proangiogenic placental growth factor (PlGF) and VEGF. However, the significance of PlGF suppression in preeclampsia is uncertain. To test whether preeclampsia results from the imbalance of angiogenic factors reflected by an abnormal sFlt-1:PlGF ratio, we studied PlGF knockout ...

Association between endoglin/transforming growth factor beta receptors 1, 2 gene polymorphisms and the level of soluble endoglin with preeclampsia in Egyptian women.

Preeclampsia (PE) is a pregnancy-specific hypertensive disease whose etiopathogenesis remains unclear.

Long-Term Cognitive Impairment After Preeclampsia: A Systematic Review and Meta-analysis.

To systematically review and summarize studies investigating an association between a history of preeclampsia and cognitive function later in life.

Environmental contaminants and preeclampsia: a systematic literature review.

Preeclampsia is a medical condition specific to pregnancy characterized by high blood pressure and protein in the woman's urine, indicating kidney damage. It is one of the most serious reproductive conditions, posing substantial risks to the baby and potentially fatal for the mother. The causes of preeclampsia are largely unknown and environmental contaminants merit further investigation. The aim of this review was to determine the association between environmental chemical exposures and preeclampsia. PubMe...

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