scholarly journals Hypoxia and Mitochondrial Dysfunction in Pregnancy Complications

Antioxidants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 405 ◽  
Author(s):  
Xiang-Qun Hu ◽  
Lubo Zhang
Keyword(s):  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Animal Studies ◽  
Major Effect ◽  
Causative Role ◽  
Therapeutic Approaches ◽  
Maternal Complications ◽  
Mitochondrial Ros ◽  
Subsequent Risk

Hypoxia is a common and severe stress to an organism’s homeostatic mechanisms, and hypoxia during gestation is associated with significantly increased incidence of maternal complications of preeclampsia, adversely impacting on the fetal development and subsequent risk for cardiovascular and metabolic disease. Human and animal studies have revealed a causative role of increased uterine vascular resistance and placental hypoxia in preeclampsia and fetal/intrauterine growth restriction (FGR/IUGR) associated with gestational hypoxia. Gestational hypoxia has a major effect on mitochondria of uteroplacental cells to overproduce reactive oxygen species (ROS), leading to oxidative stress. Excess mitochondrial ROS in turn cause uteroplacental dysfunction by damaging cellular macromolecules, which underlies the pathogenesis of preeclampsia and FGR. In this article, we review the current understanding of hypoxia-induced mitochondrial ROS and their role in placental dysfunction and the pathogenesis of pregnancy complications. In addition, therapeutic approaches selectively targeting mitochondrial ROS in the placental cells are discussed.

VI. Pathogenesis and therapeutic approaches to human gastric dysrhythmias

2002 ◽  
Vol 283 (1) ◽  
pp. G8-G15 ◽  
Author(s):  
Chung Owyang ◽  
William L. Hasler
Keyword(s):  
Slow Wave ◽  
Animal Studies ◽  
Nausea And Vomiting ◽  
Causative Role ◽  
Therapeutic Approaches ◽  
Receptor Antagonists ◽  
Gastric Slow Wave ◽  
Dopamine Receptor Antagonists ◽  
Gastric Dysrhythmias ◽  
Intestinal Delivery

This review describes recent advances in our knowledge about the pathogenesis and therapeutic approaches to human gastric dysrhythmias. A number of clinical conditions has been found to be associated with gastric slow-wave rhythm disturbances that may relate to the induction of nausea and vomiting. Human and animal studies indicate that multiple neurohumoral factors are involved in the generation of gastric dysrhythmias. Antral distension and increased intestinal delivery of lipids may cause slow-wave disruption and development of nausea. This may be mediated by cholinergic and serotonergic pathways. Similarly, progesterone and estrogen may also disrupt gastric slow-wave rhythm in susceptible individuals. Prostaglandin overproduction in gastric smooth muscle appears to mediate slow-wave disruption in diabetes and with tobacco smoking. On the other hand, central cholinergic pathways play an important role in the genesis of gastric dysrhythmias associated with motion sickness. This may be mediated by vasopressin released from the pituitary. Although it is difficult to ascribe with certainty a causative role of slow-wave rhythm disturbances in the genesis of nausea and vomiting, the search has begun for novel antiemetic therapies based on their abilities to ablate or prevent gastric dysrhythmia formation. This includes the use of prostaglandin synthesis inhibitors, central muscarinic receptor antagonists, and dopamine receptor antagonists. Finally direct gastric electrical stimulation using a surgically implanted neurostimulator has shown promise in reducing emesis in patients with gastroparesis and gastric dysrhythmias.

scholarly journals The risk of cesarean delivery after labor induction among women with prior pregnancy complications: A subgroup analysis of the AFFIRM study

2019 ◽  
Author(s):  
Leslie Skeith ◽  
Grégoire Le Gal ◽  
Johanna IP de Vries ◽  
Saskia Middeldorp ◽  
Mariëtte Goddijn ◽  
...  
Keyword(s):  
Cesarean Delivery ◽  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Primary Outcome ◽  
Late Pregnancy ◽  
Labor Induction ◽  
Intrauterine Growth ◽  
Randomized Controlled ◽  
Level Data

Abstract Objective: To determine the risk of cesarean delivery after labor induction among patients with prior placenta-mediated pregnancy complications (pre-eclampsia, late pregnancy loss, placental abruption or intrauterine growth restriction). Study Design: The AFFIRM database includes patient level data from 9 randomized controlled trials that evaluated the role of LMWH versus no LMWH during pregnancy to prevent recurrent placenta-mediated pregnancy complications. The primary outcome of this sub-study was the proportion of women who had an unplanned cesarean delivery after induction of labor compared to after spontaneous labor. Results: There were 512 patients from 7 randomized trials included in our sub-study. There was no difference in the risk of cesarean delivery between women with labor induction (21/148, 14.2%) and spontaneous labor (79/364, 21.7%) (odds ratio (OR) 0.60, 95% CI, 0.35-1.01; p=0.052). Among 274 women who used LMWH prophylaxis during pregnancy, the risk of cesarean delivery was lower among those that underwent labor induction (9.8%) compared to spontaneous labor (22.4%) (OR 0.38, 95% CI, 0.17-0.84; p=0.01). Conclusions: The risk of cesarean delivery is not increased after labor induction among a higher risk patient population with prior pregnancy complications. Our results suggest that women who receive LMWH during pregnancy might benefit from labor induction.

scholarly journals The risk of cesarean delivery after labor induction among women with prior pregnancy complications: a subgroup analysis of the AFFIRM study

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Leslie Skeith ◽  
◽  
Grégoire Le Gal ◽  
Johanna I. P. de Vries ◽  
Saskia Middeldorp ◽  
...  
Keyword(s):  
Cesarean Delivery ◽  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Primary Outcome ◽  
Late Pregnancy ◽  
Labor Induction ◽  
Intrauterine Growth ◽  
Randomized Controlled ◽  
Level Data

Abstract Background To determine the risk of cesarean delivery after labor induction among patients with prior placenta-mediated pregnancy complications (pre-eclampsia, late pregnancy loss, placental abruption or intrauterine growth restriction). Methods The AFFIRM database includes patient level data from 9 randomized controlled trials that evaluated the role of LMWH versus no LMWH during pregnancy to prevent recurrent placenta-mediated pregnancy complications. The primary outcome of this sub-study was the proportion of women who had an unplanned cesarean delivery after induction of labor compared to after spontaneous labor. Results There were 512 patients from 7 randomized trials included in our sub-study. There was no difference in the risk of cesarean delivery between women with labor induction (21/148, 14.2%) and spontaneous labor (79/364, 21.7%) (odds ratio (OR) 0.60, 95% CI, 0.35–1.01; p = 0.052). Among 274 women who used LMWH prophylaxis during pregnancy, the risk of cesarean delivery was lower among those that underwent labor induction (9.8%) compared to spontaneous labor (22.4%) (OR 0.38, 95% CI, 0.17–0.84; p = 0.01). Conclusions The risk of cesarean delivery is not increased after labor induction among a higher risk patient population with prior pregnancy complications. Our results suggest that women who receive LMWH during pregnancy might benefit from labor induction.

scholarly journals The Role of the Leucocytosis Parameter in the Occurrence of Pregnancy Complications in Women with Periodontal Disease

2019 ◽  
Vol 70 (11) ◽  
pp. 3967-3970
Author(s):  
Camelia Fiera Maglaviceanu ◽  
Edwin Sever Bechir ◽  
Mihaela Jana Tuculina ◽  
Constantin Daguci ◽  
Ionela Teodora Dascalu ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
The Body ◽  
Intrauterine Growth ◽  
Obstetrics And Gynaecology ◽  
Severe Periodontitis ◽  
Significant Difference ◽  
Control Segment

For the present study, a total number of 109 pregnant patients in the second trimester of pregnancy were selected from the case studies of the Clinic of Obstetrics and Gynaecology of the Municipal Clinical Hospital Filantropia in Craiova. Among these, 56 patients had gingivitis, 26 had mild, moderate, or severe periodontitis, and 27 patients were used as a control segment. Each patient had her leukocytes values tested and they had their oral cavity examined. Leukocyte neutrophils are the primary cells of the body�s defence system as well as primary protective cells against periodontal disease. Based on the study, we can say that there is a significant difference between the average number of leukocytes found in the four groups, because the result of the ANOVA test was below the threshold p [0.001. By analyzing the involvement of the leucocytosis parameter in the occurrence or presence of pregnancy complications, we found it present in periodontal disease pregnant women who had complications, namely: premature birth, preeclampsia, or intrauterine growth restriction.

scholarly journals The physiologic and therapeutic role of Heparin in implantation and placentation

2014 ◽  
Author(s):  
Michela Quaranta ◽  
Offer Erez ◽  
Salvatore Andrea Mastrolia ◽  
Arie Koifman ◽  
Elad Leron ◽  
...  
Keyword(s):  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Preterm Labor ◽  
Normal Pregnancy ◽  
Fetal Demise ◽  
Therapeutic Role ◽  
Intrauterine Growth ◽  
Treatment And Prevention ◽  
Normal Gestation

Implantation, trophoblast development and placentation are crucial processes in the establishment and development of normal pregnancy. Abnormalities of these processes can lead to pregnancy complications named the great obstetrical syndromes (preeclampsia, intrauterine growth restriction, fetal demise, premature prelabor rupture or membranes, preterm labor, and recurrent pregnancy loss). There is mounting evidence regarding the physiological and therapeutic role of heparins in the establishment of normal gestation and as a modality for treatment and prevention of pregnancy complications. In this review we will summarize the properties and the physiological contribute of heparins to the success of implantation and placentation and normal pregnancy.

scholarly journals The role of Sirtuin1–PPARγ axis in placental development and function

2018 ◽  
Vol 60 (4) ◽  
pp. R201-R212 ◽  
Author(s):  
Jonathan Pham ◽  
Kanaga Arul Nambi Rajan ◽  
Ping Li ◽  
Mana M Parast
Keyword(s):  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Multiple Pregnancy ◽  
Well Being ◽  
Sirtuin 1 ◽  
Hypertensive Disorder ◽  
Placental Development ◽  
Intrauterine Growth ◽  
And Function

Placental development is important for proper in utero growth and development of the fetus, as well as maternal well-being during pregnancy. Abnormal differentiation of placental epithelial cells, called trophoblast, is at the root of multiple pregnancy complications, including miscarriage, the maternal hypertensive disorder preeclampsia and intrauterine growth restriction. The ligand-activated nuclear receptor, PPARγ, and nutrient sensor, Sirtuin-1, both play a role in numerous pathways important to cell survival and differentiation, metabolism and inflammation. However, each has also been identified as a key player in trophoblast differentiation and placental development. This review details these studies, and also describes how various stressors, including hypoxia and inflammation, alter the expression or activity of PPARγ and Sirtuin-1, thereby contributing to placenta-based pregnancy complications.

scholarly journals The risk of cesarean delivery after labor induction among women with prior pregnancy complications: A subgroup analysis of the AFFIRM study

2019 ◽  
Author(s):  
Leslie Skeith ◽  
Grégoire Le Gal ◽  
Johanna IP de Vries ◽  
Saskia Middeldorp ◽  
Mariëtte Goddijn ◽  
...  
Keyword(s):  
Cesarean Delivery ◽  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Primary Outcome ◽  
Late Pregnancy ◽  
Labor Induction ◽  
Intrauterine Growth ◽  
Randomized Controlled ◽  
Level Data

Abstract Objective: To determine the risk of cesarean delivery after labor induction among patients with prior placenta-mediated pregnancy complications (pre-eclampsia, late pregnancy loss, placental abruption or intrauterine growth restriction). Study Design: The AFFIRM database includes patient level data from 9 randomized controlled trials that evaluated the role of LMWH versus no LMWH during pregnancy to prevent recurrent placenta-mediated pregnancy complications. The primary outcome of this sub-study was the proportion of women who had an unplanned cesarean delivery after induction of labor compared to after spontaneous labor. Results: There were 512 patients from 7 randomized trials included in our sub-study. There was no difference in the risk of cesarean delivery between women with labor induction (21/148, 14.2%) and spontaneous labor (79/364, 21.7%) (odds ratio (OR) 0.60, 95% CI, 0.35-1.01; p=0.052). Among 274 women who used LMWH prophylaxis during pregnancy, the risk of cesarean delivery was lower among those that underwent labor induction (9.8%) compared to spontaneous labor (22.4%) (OR 0.38, 95% CI, 0.17-0.84; p=0.01). Conclusions: The risk of cesarean delivery is not increased after labor induction among a higher risk patient population with prior pregnancy complications. Our results suggest that women who receive LMWH during pregnancy might benefit from labor induction.

scholarly journals The Role of the Leucocytosis Parameter in the Occurrence of Pregnancy Complications in Women with Periodontal Disease

2019 ◽  
Vol 70 (11) ◽  
pp. 3967-3970
Keyword(s):  
Periodontal Disease ◽  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Second Trimester ◽  
Intrauterine Growth ◽  
Obstetrics And Gynaecology ◽  
Severe Periodontitis ◽  
Significant Difference ◽  
Control Segment

For the present study, a total number of 109 pregnant patients in the second trimester of pregnancy were selected from the case studies of the Clinic of Obstetrics and Gynaecology of the Municipal Clinical Hospital Filantropia in Craiova. Among these, 56 patients had gingivitis, 26 had mild, moderate, or severe periodontitis, and 27 patients were used as a control segment. Each patient had her leukocytes values tested and they had their oral cavity examined. Leukocyte neutrophils are the primary cells of the body’s defence system as well as primary protective cells against periodontal disease. Based on the study, we can say that there is a significant difference between the average number of leukocytes found in the four groups, because the result of the ANOVA test was below the threshold p <0.001. By analyzing the involvement of the leucocytosis parameter in the occurrence or presence of pregnancy complications, we found it present in periodontal disease pregnant women who had complications, namely: premature birth, preeclampsia, or intrauterine growth restriction. Keywords: periodontitis, leukocytes, pregnant, preterm birth

scholarly journals The risk of cesarean delivery after labor induction among women with prior pregnancy complications: A subgroup analysis of the AFFIRM study

2019 ◽  
Author(s):  
Leslie Skeith ◽  
Grégoire Le Gal ◽  
Johanna IP de Vries ◽  
Saskia Middeldorp ◽  
Mariëtte Goddijn ◽  
...  
Keyword(s):  
Cesarean Delivery ◽  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Primary Outcome ◽  
Late Pregnancy ◽  
Labor Induction ◽  
Intrauterine Growth ◽  
Randomized Controlled ◽  
Level Data

Abstract Objective: To determine the risk of cesarean delivery after labor induction among patients with prior placenta-mediated pregnancy complications (pre-eclampsia, late pregnancy loss, placental abruption or intrauterine growth restriction). Study Design: The AFFIRM database includes patient level data from 9 randomized controlled trials that evaluated the role of LMWH versus no LMWH during pregnancy to prevent recurrent placenta-mediated pregnancy complications. The primary outcome of this sub-study was the proportion of women who had an unplanned cesarean delivery after induction of labor compared to after spontaneous labor. Results: There were 512 patients from 7 randomized trials included in our sub-study. There was no difference in the risk of cesarean delivery between women with labor induction (21/148, 14.2%) and spontaneous labor (79/364, 21.7%) (odds ratio (OR) 0.60, 95% CI, 0.35-1.01; p=0.052). Among 274 women who used LMWH prophylaxis during pregnancy, the risk of cesarean delivery was lower among those that underwent labor induction (9.8%) compared to spontaneous labor (22.4%) (OR 0.38, 95% CI, 0.17-0.84; p=0.01). Conclusions: The risk of cesarean delivery is not increased after labor induction among a higher risk patient population with prior pregnancy complications. Our results suggest that women who receive LMWH during pregnancy might benefit from labor induction.

scholarly journals The physiologic and therapeutic role of Heparin in implantation and placentation

2014 ◽  
Author(s):  
Michela Quaranta ◽  
Offer Erez ◽  
Salvatore Andrea Mastrolia ◽  
Arie Koifman ◽  
Elad Leron ◽  
...  
Keyword(s):  
Pregnancy Complications ◽  
Intrauterine Growth Restriction ◽  
Preterm Labor ◽  
Normal Pregnancy ◽  
Fetal Demise ◽  
Therapeutic Role ◽  
Intrauterine Growth ◽  
Treatment And Prevention ◽  
Normal Gestation

Implantation, trophoblast development and placentation are crucial processes in the establishment and development of normal pregnancy. Abnormalities of these processes can lead to pregnancy complications named the great obstetrical syndromes (preeclampsia, intrauterine growth restriction, fetal demise, premature prelabor rupture or membranes, preterm labor, and recurrent pregnancy loss). There is mounting evidence regarding the physiological and therapeutic role of heparins in the establishment of normal gestation and as a modality for treatment and prevention of pregnancy complications. In this review we will summarize the properties and the physiological contribute of heparins to the success of implantation and placentation and normal pregnancy.

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