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calcium preeclampsia

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https://www.readbyqxmd.com/read/29705580/impaired-function-of-cerebral-parenchymal-arterioles-in-experimental-preeclampsia
#1
Abbie C Johnson, Marilyn J Cipolla
Preeclampsia (PE), a dangerous hypertensive complication of pregnancy, is associated with widespread maternal vascular dysfunction. However, the effect of PE on the cerebral vasculature that can lead to stroke and cognitive decline is not well understood. We hypothesized that function of cortical parenchymal arterioles (PAs) would be impaired during PE. Using a high cholesterol diet to induce experimental PE in rats (ePE), we studied the function and structure of isolated and pressurized PAs supplying frontoparietal WM tracts and cortex and compared to normal pregnant (Preg) and nonpregnant (Nonpreg) Sprague Dawley rats (n = 8/group)...
April 26, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29697782/the-inhibitory-effect-of-bkca-channels-induced-by-autoantibodies-against-angiotensin-ii-type-1-receptor-is-independent-of-at1r
#2
Peng Wang, Suli Zhang, Jie Ren, Li Yan, Lina Bai, Li Wang, Pengli Wang, Jingwei Bian, Xiaochen Yin, Huirong Liu
Autoantibodies against angiotensin II Type 1 receptor (AT1-AA) are routinely detected in the serum of preeclampsia patients, which results in an increase in vascular tone and an elevation in intracellular calcium concentration of rat vascular smooth muscle (VSM). The big conductance calcium-activated potassium channels (BKCa channels) account for the dominant outward currents in VSMCs, contributing to membrane hyperpolarization and vasodilation. In the present study, we investigated the effect of AT1-AA on BKCa channels...
April 25, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29651732/maternal-cadmium-levels-during-pregnancy-and-the-relationship-with-preeclampsia-and-fetal-biometric-parameters
#3
Fan Wang, Fengyun Fan, Lianyun Wang, Wen Ye, Qiong Zhang, Shuangshuang Xie
Preeclampsia, which is caused by multiple factors, still remains one of the most serious complications of pregnancy. This study was designed to determine cadmium levels in women with preeclampsia compared to those of normotensive women. In this case-control study, maternal blood, umbilical cord blood, and placental cadmium levels were measured by an inductively coupled plasma mass spectrometry system in 51 women presenting consecutively with preeclampsia and 51 normotensive pregnant women. Groups were matched for maternal age, parity, and gestational age...
April 12, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29588233/postpartum-increases-in-cerebral-edema-and-inflammation-in-response-to-placental-ischemia-during-pregnancy
#4
Ahsia M Clayton, Qingmei Shao, Nina D Paauw, Ashtin B Giambrone, Joey P Granger, Junie P Warrington
Reduced placental blood flow results in placental ischemia, an initiating event in the pathophysiology of preeclampsia, a hypertensive pregnancy disorder. While studies show increased mortality risk from Alzheimer's disease, stroke, and cerebrovascular complications in women with a history of preeclampsia, the underlying mechanisms are unknown. During pregnancy, placental ischemia, induced by reducing uterine perfusion pressure (RUPP), leads to cerebral edema and increased blood-brain barrier (BBB) permeability; however whether these complications persist after delivery is not known...
March 24, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29544806/strontium-and-its-role-in-preeclampsia
#5
Clara Barneo-Caragol, Eduardo Martínez-Morillo, Susana Rodríguez-González, Paloma Lequerica-Fernández, Ignacio Vega-Naredo, Francisco V Álvarez Menéndez
BACKGROUND: Preeclampsia (PE) is considered a specific vascular disease in which endothelial dysfunction may be the crucial factor of its pathogenesis. It has been suggested that strontium (Sr) may play a role in the pathophysiology of PE. Our group established in a previous study the serum levels of Sr in healthy pregnancies, and the main aim of the present study was to evaluate Sr concentrations and oxidative status in preeclamptic women. METHODS: The study population included women with early-onset PE (E-PE, n = 39), late-onset PE (L-PE, n = 67) and serial samples from a subset of preeclamptic women (PE-ss, n = 20)...
May 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29494538/systematic-review-of-vitamin-d-and-hypertensive-disorders-of-pregnancy
#6
REVIEW
Karen M O'Callaghan, Mairead Kiely
This narrative systematic review evaluates growing evidence of an association between low maternal vitamin D status and increased risk of hypertensive disorders. The inclusion of interventional, observational, and dietary studies on vitamin D and all hypertensive disorders of pregnancy is a novel aspect of this review, providing a unique contribution to an intensively-researched area that still lacks a definitive conclusion. To date, trial evidence supports a protective effect of combined vitamin D and calcium supplementation against preeclampsia...
March 1, 2018: Nutrients
https://www.readbyqxmd.com/read/29493899/ethiopian-women-s-perspectives-on-antenatal-care-and-iron-folic-acid-supplementation-insights-for-translating-global-antenatal-calcium-guidelines-into-practice
#7
Zewdie Birhanu, Gina M Chapleau, Stephanie E Ortolano, Girma Mamo, Stephanie L Martin, Katherine L Dickin
After decades of global response to iron-deficiency anemia, lessons learned from antenatal iron-folic acid (IFA) supplementation can inform new micronutrient supplementation efforts. The World Health Organization recommends calcium supplementation for the prevention of preeclampsia; however, little is documented on how to design programs to integrate calcium into the standard of care. Twenty interviews with pregnant women and 22 interviews with health providers and volunteers in two districts in Ethiopia were conducted to examine how barriers and facilitators to antenatal care, IFA supplementation, and initial reactions to calcium supplements and regimen might influence adherence and inform future programs...
February 2018: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/29493897/feasibility-of-integrating-calcium-and-iron-folate-supplementation-to-prevent-preeclampsia-and-anemia-in-pregnancy-in-primary-healthcare-facilities-in-kenya
#8
Moshood O Omotayo, Katherine L Dickin, David L Pelletier, Stephanie L Martin, Jacqueline K Kung'u, Rebecca J Stoltzfus
Calcium (Ca) supplementation to prevent preeclampsia can save maternal and newborn lives, but there are no program models for integration into existing antenatal care platforms. We used a program impact pathway model to guide the design of integrated Ca and iron-folate (IFA) supplementation in Kenya. We provided healthcare providers with job aids (posters and counseling cards), trained them on counseling techniques and supplementation guidelines, and developed behavior change materials for pregnant women (pill-taking calendars)...
February 2018: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/29465424/nutritional-approach-to-preeclampsia-prevention
#9
Najate Achamrah, Agnès Ditisheim
PURPOSE OF REVIEW: Although not fully understood, the physiopathology of preeclampsia is thought to involve an abnormal placentation, diffuse endothelial cell dysfunction and increased systemic inflammation. As micronutrients play a key role in placental endothelial function, oxidative stress and expression of angiogenic factors, periconceptional micronutrient supplementation has been proposed to reduce the risk of preeclampsia. However, recent studies reported conflicting results. RECENT FINDINGS: Calcium intake (>1 g/day) may reduce the risk of preeclampsia in women with low-calcium diet...
May 2018: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/29262380/vitamin-d-effects-on-human-reproduction-pregnancy-and-fetal-well-being
#10
REVIEW
E L Heyden, S J Wimalawansa
Pregnancy places exceptional demands on vitamin D and calcium availability; thus, their deficiencies during pregnancy threaten the woman and her fetus. Globally, vitamin D and other micronutrient deficiencies are common during pregnancy, especially in developing countries where pregnant women have less access to nutritional supplements. Vitamin D deficiency has been reported to be as high as 40% among pregnant women. As a pregnancy progresses, the requirements for vitamin D increase and thus, can worsen preexisting hypovitaminosis D...
December 17, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29199169/treatment-of-reflux-disease-during-pregnancy-and-lactation
#11
Ülkü Dağlı, İsmail Hakkı Kalkan
Gastroesophageal reflux disease (GERD) is frequently seen during pregnancy. In the medical treatment of pregnant women with GERD, alginic acid and sucralfate can be used. Calcium- and magnesium-based antacids can also be used, particularly for patients with preeclampsia. In particular, ranitidine -a histamine-2 receptor blocker- is preferred. In the case of non-responsiveness to the abovementioned treatments, proton pump inhibitors (PPIs), except omeprazole, can be given considering the benefit-harm ratio for the mother and fetus after the first trimester...
December 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/29173484/strontium-and-oxidative-stress-in-normal-pregnancy
#12
Clara Barneo-Caragol, Eduardo Martínez-Morillo, Susana Rodríguez-González, Paloma Lequerica-Fernández, Ignacio Vega-Naredo, Francisco V Álvarez Menéndez
BACKGROUND: Pregnancy brings about metabolic and oxidative changes that involve various trace elements and oxidative stress. Strontium (Sr) is a trace element scarcely studied in this context, although it has been suggested that it may play a role in the pathophysiology of preeclampsia. The main aim of this study was to evaluate Sr concentrations and oxidative status in normal pregnancy. METHODS: The study population included non-pregnant women (n=31), healthy pregnant women in the first (n=50), second (n=51) and third (n=53) trimesters of gestation, and women in postpartum period (n=31)...
January 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29169993/impact-of-vitamin-d-on-pregnancy-related-disorders-and-on-offspring-outcome
#13
REVIEW
Karoline von Websky, Ahmed Abdallah Hasan, Christoph Reichetzeder, Oleg Tsuprykov, Berthold Hocher
Observational studies from all over the world continue to find high prevalence rates of vitamin D insufficiency and deficiency in many populations, including pregnant women. Beyond its classical function as a regulator of calcium and phosphate metabolism, vitamin D elicits numerous effects in the human body. Current evidence highlights a vital role of vitamin D in mammalian gestation. During pregnancy, adaptations in maternal vitamin D metabolism lead to a physiologic increase of vitamin D levels, mainly because of an increased renal production, although other potential sources like the placenta are being discussed...
November 21, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29162954/analyses-of-nutrients-and-body-mass-index-as-risk-factor-for-preeclampsia
#14
Yusrawati, Nicko Pisceski Kusika Saputra, Nur Indrawati Lipoeto, Rizanda Machmud
Background: Little is known about the pathogenesis of preeclampsia. Many factors are identified as risk factors for preeclampsia including nutrients and obesity. The aim of this study was to assess whether nutrients and body mass index (BMI) are risk factors for preeclampsia. Methods: This was a case-control study at the Department of Obstetric and Gynecology in Dr. M. Djamil Hospital, Padang, Indonesia. A total of 140 patients were enrolled in this study with 70 cases and 70 controls...
December 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/29153679/hypertensive-disorders-of-pregnancy-in-women-with-gestational-diabetes-mellitus-from-rio-de-janeiro-brazil
#15
Luciana Lourenço Gomes Dos Santos da Silva, Cláudia Saunders, Aline Bull Ferreira Campos, Gabriella Pinto Belfort, Patricia de Carvalho Padilha, Rosangela Alves Pereira, Rita Guérios Bornia
Pregnant women with Gestational Diabetes Mellitus (GDM) have a greater chance of developing Hypertensive Disorders of Pregnancy (HDP) by the effect of insulin resistance in nitric oxide action.This study aims to describe factors associated with the development of HDP in pregnant women with GDM, assisted in a public maternity hospital in Rio de Janeiro, Brazil. This is a cross-sectional study including 292 pregnant adult women with GDM assisted at Maternidade Escola of the Universidade Federal do Rio de Janeiro...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29147891/long-term-presence-of-angiotensin-ii-type-1-receptor-autoantibody-reduces-aldosterone-production-by-triggering-ca-2-overload-in-h295r-cells
#16
Jinghui Lei, Suli Zhang, Pengli Wang, Yang Liao, Jingwei Bian, Xiaochen Yin, Ye Wu, Lina Bai, Feng Wang, Xiaoli Yang, Huirong Liu
Preeclamptic women are reported to have inadequate plasma volume expansion coupled with a suppressed secretion of aldosterone; however, the specific mechanism of preeclampsia remains unclear. We demonstrated that the presence of long-term angiotensin II type 1 receptor autoantibody (AT1-AA) reduces aldosterone production by triggering a Ca2+ overload in H295R cells. AT1-AA was discovered in preeclamptic women and reported to activate AT1 R, and consequently elevate intracellular Ca2+ . We found that AT1-AA significantly prolonged the time of intracellular Ca2+ elevation...
February 2018: Immunologic Research
https://www.readbyqxmd.com/read/29057843/calcium-and-vitamin-d-supplementation-for-prevention-of-preeclampsia-a-systematic-review-and-network-meta-analysis
#17
REVIEW
Win Khaing, Sakda Arj-Ong Vallibhakara, Visasiri Tantrakul, Orawin Vallibhakara, Sasivimol Rattanasiri, Mark McEvoy, John Attia, Ammarin Thakkinstian
Vitamin D supplementation effects with or without calcium in pregnancy for reducing risk of preeclampsia and gestational or pregnancy induced hypertension are controversial. Literature was systematically searched in Medline, Scopus and Cochrane databases from inception to July 2017. Only randomized controlled trials (RCTs) in English were selected if they had any pair of interventions (calcium, vitamin D, both, or placebo). Systematic review with two-step network-meta-analysis was used to indirectly estimate supplementary effects...
October 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28989883/status-of-serum-vitamin-d-and-calcium-levels-in-women-of-reproductive-age-in-national-capital-territory-of-india
#18
Nighat Yaseen Sofi, Monika Jain, Umesh Kapil, Vuthaluru Seenu, Lakshmy Ramakrishnan, Chander Prakash Yadav, Ravindra Mohan Pandey
CONTEXT: In India, Vitamin D deficiency is a major public health problem, associated with lack of sunlight exposure in spite of abundant sunshine usually accompanied by reduced dietary intake. In women of reproductive age, Vitamin D deficiency in pregnancy has been associated with an increased risk of gestational diabetes mellitus, preeclampsia, maternal and perinatal morbidity and mortality. AIMS: The aim of the present cross-sectional study was to evaluate the levels of serum Vitamin D 25(OH) D and calcium in women of reproductive age from India...
September 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938191/blood-lead-and-preeclampsia-a-meta-analysis-and-review-of-implications
#19
Arthur E Poropat, Mark A S Laidlaw, Bruce Lanphear, Andrew Ball, Howard W Mielke
BACKGROUND: Multiple cross-sectional studies suggest that there is an association between blood lead and preeclampsia. OBJECTIVES: We performed a systematic review and meta-analysis to summarize information on the association between preeclampsia and lead poisoning. METHODS: Searches of Medline, Web of Science, Scopus, Pubmed, Science Direct and ProQuest (dissertations and theses) identified 2089 reports, 46 of which were downloaded after reviewing the abstracts, and 11 studies were evaluated as meeting the selection criteria...
January 2018: Environmental Research
https://www.readbyqxmd.com/read/28905546/-hypertension-in-people-of-african-descent
#20
Fabien Cane, Sofia Zisimopoulou, Antoinette Pechère-Bertschi
Hypertension in people of African descent presents an increased prevalence, an earlier and more severe target organ damage and is harder to control compared to other ethnicities. Preeclampsia and gestational hypertension are more frequent in black women. The physiological phenomenon of night time blood pressure dipping is often blunted. The low renin hypertension phenotype seems to be caused by an increase in sodium retention at renal level. The treatment of choice is calcium channel blockers and thiazide diuretics along with a renin-angiotensin-aldosterone blocker for kidney protection...
September 13, 2017: Revue Médicale Suisse
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