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preeclampsia and kidney

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https://www.readbyqxmd.com/read/27927648/renin-angiotensin-system-transgenic-mouse-model-recapitulates-pathophysiology-similar-to-human-preeclampsia-with-renal-injury-that-may-be-mediated-through-vegf
#1
J Morgan Denney, Cynthia E Bird, Annette Gendron-Fitzpatrick, Emmanuel Sampene, Ian M Bird, Dinesh M Shah
Using a transgenic cross, we evaluated features of preeclampsia, renal injury and the sFlt1/VEGF changes. Transgenic hAGT and hREN, or wild type (WT) C57Bl/6 mice were cross-bred: ♀hAGT x ♂hREN for preeclampsia (PRE) model and ♀WT x ♂WT for pregnant controls (WTP). Samples were collected for plasma VEGF, sFlt1 and urine albumin. Blood pressures (BP) were monitored by telemetry. Vascular reactivity was investigated by wire myography. Kidneys and placenta were immunostained for sFlt1 and VEGF. Eleven PRE and 9 WTP mice were compared...
December 7, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27835032/dietary-sodium-and-potassium-intake-were-associated-with-hypertension-kidney-damage-and-adverse-perinatal-outcome-in-pregnant-women-with-preeclampsia
#2
Zehra Vural Yılmaz, Elif Akkaş, Gülenay Gençosmanoğlu Türkmen, Özgür Kara, Aykan Yücel, Dilek Uygur
OBJECTIVES: In this study, we hypothesized that dietary salt and potassium intake may be related with blood pressure, kidney damage and perinatal outcome in pregnants with preeclampsia (PE). METHODS: In total, 200 women (50 control women with healthy pregnancy, 150 women with PE) were recruited for the study. Daily salt and potassium intake was estimated based on calculation of 24-hour urinary sodium U[Na+] and potassium U[K+] excretion. U[Na+]/[K+] was calculated by dividing U[Na+] by U[K+]...
November 11, 2016: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/27829661/pathophysiology-of-preeclampsia-an-angiogenic-imbalance-and-long-lasting-systemic-vascular-dysfunction
#3
Takuji Tomimatsu, Kazuya Mimura, Masayuki Endo, Keiichi Kumasawa, Tadashi Kimura
Preeclampsia is a systemic vascular disorder characterized by new-onset hypertension and proteinuria after 20 weeks of gestation. This condition targets several organs, including the kidneys, liver and brain, and is the leading cause of maternal and perinatal morbidity and mortality. Furthermore, recent evidence has revealed preeclampsia as a significant risk factor for future cardiovascular diseases in these women. Over the past decade, increasing evidence has indicated that maternal angiogenic imbalances caused by placental antiangiogenic factors play a central role in the systemic vascular dysfunction underling preeclampsia...
November 10, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/27821655/renal-interlobar-vein-impedance-index-as-a-first-trimester-marker-does-not-predict-hypertensive-disorders-of-pregnancy
#4
Sammya Bezerra Maia E Holanda Moura, Paulo Cesar Praciano, Julio Augusto Gurgel Alves, Wellington P Martins, Edward Araujo Júnior, Stefan C Kane, Fabrício da Silva Costa
OBJECTIVES: The purpose of this study was to examine whether the maternal renal interlobar vein impedance index as assessed by first-trimester sonography is able to predict the later development of hypertensive disorders of pregnancy. METHODS: Venous Doppler parameters of both maternal kidneys were studied in 214 pregnant women at gestational ages of 11 weeks to 13 weeks 6 days. Patients were classified according to outcomes related to hypertensive disorders. Detection rates and areas under receiver operating characteristic curves were determined for the maternal renal interlobar vein impedance index as a first-trimester predictor of preeclampsia and gestational hypertension...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27802418/high-normal-estimated-glomerular-filtration-rate-in-early-onset-preeclamptic-women-10-years-postpartum
#5
Nina D Paauw, Jaap A Joles, José T Drost, Marianne C Verhaar, Arie Franx, Gerjan Navis, Angela H E M Maas, A Titia Lely
: Women with a history of preeclampsia have a 5- to 12-fold increased risk to develop end-stage kidney disease. Previous observations in small cohorts suggest that former preeclamptic (fPE) women have subtle abnormalities in renal hemodynamics and renal function, which might predispose them to renal failure in later life. In this study, we analyzed renal function in a cross-sectional cohort consisting of former early-onset preeclamptic (fPE, n=339) and former healthy pregnant women (fHP, n=332), overall with a mean age of 39 years at 10 years postpartum...
October 31, 2016: Hypertension
https://www.readbyqxmd.com/read/27789293/molecular-hydrogen-ameliorates-several-characteristics-of-preeclampsia-in-the-reduced-uterine-perfusion-pressure-rupp-rat-model
#6
Takafumi Ushida, Tomomi Kotani, Hiroyuki Tsuda, Kenji Imai, Tomoko Nakano, Shima Hirako, Yumiko Ito, Hua Li, Yukio Mano, Jingwen Wang, Rika Miki, Eiko Yamamoto, Akira Iwase, Yasuko K Bando, Masaaki Hirayama, Kinji Ohno, Shinya Toyokuni, Fumitaka Kikkawa
Oxidative stress plays an important role in the pathogenesis of preeclampsia. Recently, molecular hydrogen (H2) has been shown to have therapeutic potential in various oxidative stress-related diseases. The aim of this study is to investigate the effect of H2 on preeclampsia. We used the reduced utero-placental perfusion pressure (RUPP) rat model, which has been widely used as a model of preeclampsia. H2 water (HW) was administered orally ad libitum in RUPP rats from gestational day (GD) 12 to 19, starting 2 days before RUPP procedure...
October 24, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27773680/vasopressin-v1a-receptor-mediates-cell-proliferation-through-grk2-egfr-erk1-2-pathway-in-a7r5-cells
#7
Lingling Zhang, Xiaojun Wang, Hong Cao, Yunxuan Chen, Xianfan Chen, Xi Zhao, Feifei Xu, Yifan Wang, Anthony Yiu-Ho Woo, Weizhong Zhu
Abnormal proliferation and hypertrophy of vascular smooth muscle (VSMC), as the main structural component of the vasculature, is an important pathological mechanism of hypertension. Recently, increased levels of arginine vasopressin (AVP) and copeptin, the C-terminal fragment of provasopressin, have been shown to correlate with the development of preeclampsia. AVP targets on the Gq-coupled vasopressin V1A receptor and the Gs-coupled V2 receptor in VSMC and the kidneys to regulate vascular tone and water homeostasis...
October 20, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27754163/sy-11-3-hypertension-in-women-more-dangerous-than-in-men
#8
Suzanne Oparil
Heart disease, stroke, and kidney failure are leading causes of death worldwide, and hypertension is a significant risk factor for each. Hypertension is less common in women, compared to men, in those younger than 45 years of age. This trend is reversed in those 65 years and older. In the US between 2011-2014, the prevalence of hypertension in women and men by age group was 6% vs 8% (18-39 years), 30% vs 35% (40-59 years), and 67% vs 63% (60 years and over). Awareness, treatment, and control rates differ between genders with women being more aware of their diagnosis (85% vs 80%), more likely to take their medications (81% vs 71%) and more frequently having controlled hypertension (55% vs 49%)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27751879/can-preeclampsia-be-considered-a-renal-compartment-syndrome-a-hypothesis-and-analysis-of-the-literature
#9
David G Reuter, Yuk Law, Wayne C Levy, Stephen P Seslar, R Eugene Zierler, Mark Ferguson, James Chattra, Tim McQuinn, Lenna L Liu, Mark Terry, Patricia S Coffey, Jane A Dimer, Coral Hanevold, Joseph T Flynn, F Bruder Stapleton
The morbidity and mortality associated with preeclampsia is staggering. The physiology of the Page kidney, a condition in which increased intrarenal pressure causes hypertension, appears to provide a unifying framework to explain the complex pathophysiology. Page kidney hypertension is renin-mediated acutely and ischemia-mediated chronically. Renal venous outflow obstruction also causes a Page kidney phenomenon, providing a hypothesis for the increased vulnerability of a subset of women who have what we are hypothesizing is a "renal compartment syndrome" due to inadequate ipsilateral collateral renal venous circulation consistent with well-known variation in normal venous anatomy...
September 15, 2016: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/27733023/impact-of-random-urine-proteinuria-on-maternal-and-fetal-outcomes-of-pregnancy-a-retrospective-case-control-study
#10
Eun Hui Bae, Jong Woon Kim, Hong Sang Choi, Seong Kwon Ma, Soo Wan Kim
Background/Aims: Proteinuria is associated with hypertension and preeclampsia in pregnancy. However, the impact of random urine proteinuria on fetal and maternal outcomes has not been established. We investigated the influence of random urine proteinuria on the clinical outcomes of pregnancy. Methods: From January 2008 to December 2010, 2,822 patients were retrospectively studied. A total of 536 pregnant women with proteinuria in random urine and matched controls without proteinuria via propensity score matching were analyzed...
October 13, 2016: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/27707553/preeclampsia-and-esrd-the-role-of-shared-risk-factors
#11
Andrea G Kattah, Dawn C Scantlebury, Sanket Agarwal, Michelle M Mielke, Walter A Rocca, Amy L Weaver, Lisa E Vaughan, Virginia M Miller, Tracey L Weissgerber, Wendy White, Vesna D Garovic
BACKGROUND: Several registry-based studies, using diagnostic codes, have suggested that preeclampsia is a risk factor for end-stage renal disease (ESRD). However, because the 2 diseases share risk factors, the true nature of their association remains uncertain. Our goals were to conduct a population-based study to determine the magnitude of the association between preeclampsia and ESRD and evaluate the role of shared risk factors. STUDY DESIGN: Population-based nested case-control study...
October 1, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27703570/two-pregnancies-with-a-different-outcome-in-a-patient-with-alport-syndrome
#12
Biljana Gerasimovska Kitanovska, Vesna Gerasimovska, Vesna Livrinova
BACKGROUND: Alport syndrome is a genetic disease that progresses to chronic kidney failure, with X-linked, autosomal dominant or autosomal recessive type of inheritance. Women are generally carriers of the mutation and have a milder form of the disease. During pregnancy, they have an increased risk of impaired kidney function and preeclampsia. CASE PRESENTATION: A 27-year old woman, gravida 1, para 0, in her 23rd gestational week came to the outpatient unit of the University Clinic of Nephrology for the first time because of slowly progressing proteinuria and Alport syndrome...
September 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27680797/d1-renal-interlobar-vein-impedance-index-rivi-as-a-first-trimester-marker-for-prediction-of-hypertensive-disorders-of-pregnancy
#13
Sammya Bezerra Maia E Holanda Moura, Paulo Cesar Praciano, Julio Augusto Gurgel Alves, Wellington P Martins, Edward Araujo, Stefan C Kane, Fabrício da Silva Costa
OBJECTIVE: To examine whether the maternal renal interlobar vein impedance index (RIVI) as assessed by first trimester ultrasonography is able to predict the later development of hypertensive disorders of pregnancy. METHODS: Venous Doppler parameters of both maternal kidneys were studied in 214 pregnant women at 11 + 0 to 13 + 6 weeks' gestation. Subjects were classified according to the outcomes related to hypertensive disorders. Detection rates and areas under receiver operating characteristic (ROC) curves were determined for the maternal RIVI impedance as a first trimester predictor for preeclampsia (PE) and gestational hypertension (GH)...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27668644/the-renin-angiotensin-aldosterone-system-raas-physiology-and-molecular-mechanisms-of-functioning
#14
Monika Chaszczewska-Markowska, Maria Sagan, Katarzyna Bogunia-Kubik
Secretion of renin juxtaglomerular cells into bloodstream initiates activation of an enzymatic-hormonal cascade known as the RAAS (renin - angiotensin - aldosterone system). As a result, blood pressure is increased by the means several interrelated mechanisms. Mechanism of Zjednoczoaction of this system has been known for decades, but a few previously unknown components were recently added, such as ACE-2 and Ang(1-7), and their role often seems to be opposite to that of the conventional components. Local tissue systems also have important biological functions...
September 13, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/27659865/preeclampsia-short-and-long-term-consequences-for-mother-and-neonate
#15
REVIEW
Anouk Bokslag, Mirjam van Weissenbruch, Ben Willem Mol, Christianne J M de Groot
Preeclampsia is a common pregnancy specific disease, that presents with hypertension and a variety of organ failures, including malfunction of kidneys, liver and lungs. At present, the only definitive treatment of preeclampsia is end the pregnancy and deliver the neonate and placenta. For women with mild preeclampsia in the preterm phase of pregnancy, expectant management is generally indicated to improve fetal maturity, often requiring maternal medical treatment. Last decades, more evidence is available that the underlying mechanism of preeclampsia, endothelial disease, is not limited to pregnancy but increases cardiovascular risk in later life...
November 2016: Early Human Development
https://www.readbyqxmd.com/read/27643118/sy-11-3-hypertension-in-women-more-dangerous-than-in-men
#16
Suzanne Oparil
Heart disease, stroke, and kidney failure are leading causes of death worldwide, and hypertension is a significant risk factor for each. Hypertension is less common in women, compared to men, in those younger than 45 years of age. This trend is reversed in those 65 years and older. In the US between 2011-2014, the prevalence of hypertension in women and men by age group was 6% vs 8% (18-39 years), 30% vs 35% (40-59 years), and 67% vs 63% (60 years and over). Awareness, treatment, and control rates differ between genders with women being more aware of their diagnosis (85% vs 80%), more likely to take their medications (81% vs 71%) and more frequently having controlled hypertension (55% vs 49%)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27591246/understanding-and-communicating-medical-risks-for-living-kidney-donors-a-matter-of-perspective
#17
Krista L Lentine, Dorry L Segev
Communicating the current knowledge of medical outcomes after live kidney donation necessary to support donor candidates in well informed decision-making requires grounding in perspectives of comparison. Baseline risk (without donating), risk attributable to donation, and absolute risk (after donating) need to be considered. Severe perioperative complications and death are rare, but vary by demographic, clinical, and procedure factors. Innovative capture of "healthy" controls designed to simulate donor selection processes has identified higher risk of ESRD attributable to donation in two studies; importantly, however, the absolute 15-year ESRD incidence in donors remains very low (0...
September 2, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27588825/role-of-igm-and-angiotensin-ii-type-i-receptor-autoantibodies-in-local-complement-activation-in-placental-ischemia-induced-hypertension-in-the-rat
#18
Jean F Regal, Megan E Strehlke, Jenna M Peterson, Cameron R Wing, Jordan E Parker, Noel Fernando Nieto, Lynne T Bemis, Jeffrey S Gilbert, Sherry D Fleming
Preeclampsia is characterized by development of hypertension during pregnancy and reduced placental perfusion. Previous studies in a rat model of placental ischemia-induced hypertension demonstrated that inhibiting complement activation attenuated increased maternal blood pressure with C3a and C5a identified as the important products of complement activation. Given that in other forms of ischemia both natural IgM and antigen antibody complexes initiate complement activation, we hypothesized that placental ischemia exposes neoepitopes recognized by IgM to cause local complement activation and hypertension...
October 2016: Molecular Immunology
https://www.readbyqxmd.com/read/27582837/twin-gestation-with-complete-hydatidiform-mole-and-a-coexisting-live-fetus-case-report-and-brief-review-of-literature
#19
Raafat Makary, Amir Mohammadi, Marilin Rosa, Sania Shuja
Complete hydatidiform (also referred to as hydatiform) mole with coexisting live fetus is an exceedingly rare event. The fetus usually has a normal karyotype, and approximately 25-40% chance of survival, if pregnancy is allowed to continue until reasonable fetal lung maturity is achieved. However, risk of maternal complications including preeclampsia and subsequent trophoblastic disease are significant. We report a case of a 19-year-old primigravida, at 25 weeks gestation with a complete hydatidiform mole and a coexisting live fetus...
March 2010: Obstetric Medicine
https://www.readbyqxmd.com/read/27582154/microangiopathy-and-pregnancy
#20
Said Azzoug, Farida Chentli
Diabetic microangiopathy is a frequent complication of longstanding diabetes mellitus. Micro vascular lesions may have severe implications for both maternal and foetal health. Patients with advanced underlying lesions are at increased risk of progression during pregnancy. Severe retinal lesions can progress during pregnancy and one year after delivery. Poor glycaemic control prior to conception and rapid improvement during pregnancy are other risk factors of progression. Treatment of lesions with high risk of progression and progressive blood glucose lowering in the preconception period can improve the prognosis...
September 2016: JPMA. the Journal of the Pakistan Medical Association
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