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Reproductive Sciences

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https://www.readbyqxmd.com/read/27852921/a-role-for-the-inflammasome-in-spontaneous-labor-at-term-with-acute-histologic-chorioamnionitis
#1
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Olesya Plazyo, Ronald Unkel, Nandor Gabor Than, Piya Chaemsaithong, Tinnakorn Chaiworapongsa, Zhong Dong, Adi L Tarca, Vikki M Abrahams, Lami Yeo, Sonia S Hassan
Inflammasomes are cytosolic signaling platforms that regulate the activation of caspase (CASP)-1, which induces the maturation of interleukin (IL)-1β and IL-18. Herein, we determined whether the chorioamniotic membranes from women in spontaneous labor at term with acute histologic chorioamnionitis express major inflammasome components and whether these changes are associated with the activation of CASP-1 and CASP-4 and the release of mature IL-1β and IL-18. When comparing the chorioamniotic membranes from women in spontaneous labor at term with acute histologic chorioamnionitis to those without this placental lesion, we found that (1) the messenger RNA (mRNA) abundance of NLR family pyrin domain containing 3 ( NLRP3), NLR family CARD domain containing 4 ( NLRC4), absent in melanoma 2 ( AIM2), and nucleotide binding oligomerization domain 2 ( NOD2) was higher; (2) the NLRP3 and NLRC4 protein quantities were increased; (3) the mRNA and protein expressions of CASP-1 and its active forms were greater; (4) CASP-4 was increased at the mRNA level only; (5) the mRNA and protein expressions of IL-1β and its mature form were higher; and (6) a modest increase in the total protein concentration and abundance of the mature form of IL-18 was observed...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27837083/a-first-trimester-biomarker-panel-for-predicting-the-development-of-gestational-diabetes
#2
Antonio Farina, Elizabeth Eklund, Dalila Bernabini, Mariangela Paladino, Francesca Righetti, Giuseppe Monti, Geralyn Lambert-Messerlian
OBJECTIVE: Serum markers measured early in pregnancy have been associated with the later diagnosis of gestational diabetes mellitus (GDM). This study aims to explore the performance of a panel of first-trimester biochemical markers for the prediction of GDM. METHODS: A case-control study was performed that included 12 women who developed GDM and 60 controls matched for maternal and gestational age at blood collection. Levels of pregnancy-associated plasma protein A (PAPP-A), soluble endoglin, pregnancy protein 13, and adiponectin (Adipo) were measured on residual sera used in first-trimester screening for Down syndrome...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27799458/microrna-145-negatively-regulates-cell-proliferation-through-targeting-irs1-in-isolated-ovarian-granulosa-cells-from-patients-with-polycystic-ovary-syndrome
#3
Guoqing Cai, Xiangdong Ma, Biliang Chen, Yanhong Huang, Shujuan Liu, Hong Yang, Wei Zou
Polycystic ovary syndrome (PCOS) is a complex, heterogeneous endocrine and metabolic disorder affecting 5% to 10% of reproductive-age women. A high rate of granulosa cell (GC) proliferation contributes to the abnormal folliculogenesis in patients with PCOS. Evidence has proved that dysregulation of microRNAs is involved in the pathogenesis of PCOS. In this study, we investigated the effect of miR-145 on cell proliferation and the underlying mechanism of miR-145 in isolated human GCs from the aspirated follicular fluid in women with PCOS...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27738175/oral-administration-of-pentoxifylline-reduces-endometriosis-like-lesions-in-a-nude-mouse-model
#4
Maria Perelló, Iñaki González-Foruria, Paola Castillo, Mario Martínez-Florensa, Francisco Lozano, Juan Balasch, Francisco Carmona
INTRODUCTION: Recent reports consider endometriosis to be an immunological disorder, thus suggesting potential efficacy of immunomodulators for its treatment. The aim of this study was to assess the effects of oral administration of pentoxifylline on endometriosis-like lesions in a heterologous mice model. STUDY DESIGN: Human endometrial tissue obtained from women (n = 5) undergoing surgery for benign conditions was implanted in nude female mice (n = 30). The animals were distributed into 3 experimental groups receiving: saline 0...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27733658/postnatal-cardiovascular-consequences-in-the-offspring-of-pregnant-rats-exposed-to-smoking-and-smoking-cessation-pharmacotherapies
#5
Kathirvel Gopalakrishnan, Amar S More, Gary D Hankins, Tatiana N Nanovskaya, Sathish Kumar
Approximately 20% of pregnant women smoke despite intentions to quit. Smoking cessation drugs, such as nicotine replacement therapy (NRT) and bupropion, are recommended treatments. Adverse cardiovascular outcomes in offspring have raised concerns about NRT's safety during pregnancy. However, the effect of bupropion is unknown. Using a rat model, we determined whether NRT and bupropion interventions during pregnancy are safer than continued smoking on offspring's cardiovascular function. Male offspring of controls and dams exposed to cigarette smoke (1...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27707956/dynamics-of-base-excision-repair-at-the-maternal-fetal-interface-in-pregnancies-complicated-by-preeclampsia
#6
Serkalem Tadesse, Nicholas G Norwitz, Seth Guller, Felice Arcuri, Paolo Toti, Errol R Norwitz, Dawit Kidane
Preeclampsia (PE) (gestational proteinuric hypertension) is the leading cause of maternal and perinatal mortality worldwide. Although placental endothelial dysfunction and oxidative stress are known to contribute to PE, the exact pathological basis for this disorder remains unclear. Previously, we demonstrated that DNA damage at the maternal-fetal interface is more common in the placentas of women with PE than normotensive controls. In this study, we utilized an in vivo comparative study, including 20 preeclamptic women and 8 healthy control subjects, and an in vitro hypoxia/reperfusion model to mimic the effects of oxidative stress at the maternal-fetal interface...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27698192/treg-th17-cell-imbalance-and-il-6-profile-in-patients-with-unexplained-recurrent-spontaneous-abortion
#7
Liqiong Zhu, Hui Chen, Meilan Liu, Yu Yuan, Zhaohua Wang, Ying Chen, Jing Wei, Fang Su, Jianping Zhang
Regulatory T cells (Treg) and T helper 17 cells (Th17) are 2 distinct subsets of CD4(+) T cells, which are mutually antagonistic in the immune response. Recently, dysregulation of these 2 cell subsets have been described in the pathogenesis of unexplained recurrent spontaneous abortion (URSA). The purpose of this study was to investigate whether the Treg/Th17 balance was perturbed in URSA patients and to explore contributing factors. We found that the proportion of Treg cells and expression of forkhead box P3 (Foxp3) messenger RNA (mRNA) were significantly lower in URSA patients than in healthy controls...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27694140/silencing-of-sra1-regulates-er-expression-and-attenuates-the-growth-of-stromal-cells-in-ovarian-endometriosis
#8
Kaiqing Lin, Hong Zhan, Junyan Ma, Kaihong Xu, Ruijin Wu, Caiyun Zhou, Jun Lin
Estradiol and its nuclear receptors, estrogen receptor (ER) α and ER-β, have important functions in endometriosis, and the transcriptional activity of these receptors is modulated by coactivators and corepressors. The steroid receptor RNA activator 1 (SRA1) produces SRA long noncoding RNA (lncRNA) and SRA protein (SRAP), which regulate ER expression at the RNA and protein levels in some hormone-dependent tumors via an alternative splicing event. However, only a few are reported on their expressions in endometriosis...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27688244/endometriosis-derived-thromboxane-a2-induces-neurite-outgrowth
#9
Dingmin Yan, Xishi Liu, Sun-Wei Guo
Hyperinnervation in endometriosis is now well documented, but so far only a few neurotrophins have been identified. Since endometriotic stromal cells secrete thromboxane A2 (TXA2), we sought to determine whether TXA2, derived from endometriotic stromal cells, induces neurite outgrowth. Using primary sensory neurons derived from rat dorsal root ganglia (DRG) and ectopic endometrial stromal cells (EESCs) derived from human ovarian endometrioma tissues, we treated the primary neurons with different concentrations of U-46619, a stable TXA2 mimetic, and performed a neuronal growth assay...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27688242/both-the-suprachiasmatic-nucleus-and-the-superior-ovarian-nerve-contribute-to-the-processes-of-ovulation-and-steroid-hormone-secretion-on-proestrus
#10
Deyra A Ramírez, Elizabeth Vieyra, Aldo I González, Carolina Morán, Roberto Domínguez, Leticia Morales-Ledesma
The aims of the present study were to analyze if the superior ovarian nerve (SON) plays a role in the neural signals from suprachiasmatic nucleus (SCN) that lead to ovulation and ovarian steroids secretion on proestrus day. Rats on proestrus day were treated at 11.00 to 11.30 or 17.00 to 17.30 hours with 1 of the 3 experimental procedures (1) unilateral or bilateral SON sectioning, (2) unilateral or bilateral injury to the SCN, or (3) unilateral injury to the SCN followed by unilateral sectioning of the SON ipsilateral to the treated SCN...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27678102/variable-methylation-potential-in-preterm-placenta-implication-for-epigenetic-programming-of-the-offspring
#11
Vinita V Khot, Preeti Chavan-Gautam, Savita Mehendale, Sadhana R Joshi
Children born preterm are reported to be at increased risk of developing noncommunicable diseases in later life. Altered placental DNA methylation patterns are implicated in fetal programming of adult diseases. Our earlier animal studies focus on micronutrients (folic acid, vitamin B12) and long-chain polyunsaturated fatty acids (LCPUFAs) that interact in the 1 carbon cycle, thereby influencing methylation reactions. Our previous studies in women delivering preterm show altered plasma levels of micronutrients and lower plasma LCPUFA levels...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27678096/twin-conception-in-sheep-leads-to-impaired-insulin-sensitivity-and-sexually-dimorphic-adipose-tissue-and-skeletal-muscle-phenotypes-in-adulthood
#12
Elise L Donovan, Emma J Buckels, Serina Hancock, Danielle Smeitink, Mark H Oliver, Frank H Bloomfield, Anne L Jaquiery
Twins are often born small and early and have increased risk of obesity and diabetes later in life. Twin conception in sheep, regardless of whether the pregnancy continues as twins or is reduced to singleton in early gestation, alters offspring growth trajectory and body composition in young adulthood. We hypothesized that twin conception would result in insulin resistance in adulthood, with insulin-resistant adipose tissue and skeletal muscle phenotypes. At 3 years of age, body weight was not different among singletons, twins, and reductions; females weighed less than males...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27678095/investigating-the-role-of-fetal-gene-expression-in-preterm-birth
#13
Neeta L Vora, Lisa Smeester, Kim Boggess, Rebecca C Fry
Second-trimester amniotic fluid supernatant (AFS) contains cell-free fetal RNA (cffRNA) transcripts that can provide information about fetal gene expression. In a retrospective case-control study, we measured second-trimester fetal gene expression using cffRNA extracted from AFS in women who had spontaneous preterm birth (sPTB) <34 weeks and in women who delivered >37 weeks. We extracted cffRNA from AFS of women with singletons who had second-trimester genetic amniocenteses. Twenty-one gravidas who had sPTB and 21 term controls were matched 1:1 for maternal age, fetal sex, race, gestational age (GA) at the time of amniocentesis, and medication exposure...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27624309/the-relevance-of-mammalian-peroxiredoxins-to-the-gametogenesis-embryogenesis-and-pregnancy-outcomes
#14
Lianqin Li
Peroxiredoxin (PRX) defines a family that provides antioxidant defense in different cell types by removing reactive oxygen species (ROS) through conserved active cysteines, with the support of other types of antioxidants such as thioredoxin, glutaredoxin, and glutathione peroxidase. By regulation of intracellular ROS levels, the mammalian PRXs influence a variety of reproductive processes including gamete maturation, fertilization, and embryo development. Experimental mice lacking PRXs developed normally, but some showed accelerated decrease in fertility with aging, suggesting that deficiency of PRXs did not have lethal consequences for reproduction...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27470151/genes-linked-to-endometriosis-by-gwas-are-integral-to-cytoskeleton-regulation-and-suggests-that-mesothelial-barrier-homeostasis-is-a-factor-in-the-pathogenesis-of-endometriosis
#15
Hans M Albertsen, Kenneth Ward
Endometriosis, defined by the presence of ectopic endometrial lesions, is a common disease in reproductive-age women that profoundly affects patients' quality of life. Various pathogenic models have been proposed, but the origin of endometriosis remains elusive. In this article, we propose that the mesothelial barrier, which protects the underlying stroma from endometrial transplants present in retrograde menstrual fluid, can be compromised by activation of the epithelial to mesenchymal transition (EMT) repair mechanism that lead to temporary loss of barrier integrity...
June 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28142396/abnormal-uterine-bleeding-is-associated-with-increased-bmp7-expression-in-human-endometrium
#16
Elliott G Richards, Sherif A El-Nashar, John K Schoolmeester, Gary L Keeney, Andrea Mariani, Matthew R Hopkins, Sean C Dowdy, Gaurang S Daftary, Abimbola O Famuyide
Abnormal uterine bleeding (AUB), a common health concern of women, is a heterogeneous clinical entity that is traditionally categorized into organic and nonorganic causes. Despite varied pharmacologic treatments, few offer sustained efficacy, as most are empiric, unfocused, and do not directly address underlying dysregulated molecular mechanisms. Characterization of such molecular derangements affords the opportunity to develop and use novel, more successful treatments for AUB. Given its implication in other organ systems, we hypothesized that bone morphogenetic protein (BMP) expression is altered in patients with AUB and hence comprehensively investigated dysregulation of BMP signaling pathways by systematically screening 489 samples from 365 patients for differences in the expression of BMP2, 4, 6, and 7 ligands, BMPR1A and B receptors, and downstream SMAD4, 6, and 7 proteins...
May 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27798245/leptin-levels-in-women-with-polycystic-ovary-syndrome-a-systematic-review-and-a-meta-analysis
#17
REVIEW
Sai-Hua Zheng, Dan-Feng Du, Xue-Lian Li
OBJECTIVE: Conflicting results regarding leptin levels in women with polycystic ovary syndrome (PCOS) have been reported. We summarize all available evidence from human participant studies to evaluate leptin levels in PCOS. DATA SOURCES: PubMed, ClinicalTrials.gov , and Web of Science databases were searched with English-language restriction for only human beings from the inception to December 31, 2015. Search terms included PCOS (polycystic ovary syndrome or PCOS) and leptin...
May 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27733657/establishment-of-the-human-uteroplacental-circulation-a-historical-perspective
#18
REVIEW
Kenna Degner, Ronald R Magness, Dinesh M Shah
The uterine vasculature undergoes marked changes during pregnancy in order to provide the necessary increase in blood flow to support growth and nutrition of the uterus, placenta, and developing fetus. Pregnancy-associated uterine vascular transformations are orchestrated by a complex array of endocrine and cellular mechanisms to bring about structural modifications at the maternal-fetal interface, which collectively lead to development of the uteroplacental circulation. Understanding intrinsic uterine vascular remodeling in pregnancy is essential for understanding the physiologic and pathophysiologic regulation of maternal uterine blood flow...
May 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27688241/expression-of-ezrin-and-estrogen-receptors-during-cervical-carcinogenesis
#19
Ahmed Fadiel, Seung Do Choi, Bora Park, Tae-Hee Kim, Julia Buldo-Licciardi, Mitra Ahmadi, Alan Arslan, Khushbakhat Mittal, Frederick Naftolin
RATIONALE: Development of cervical squamous carcinoma (CXCA) is accompanied by changes in estrogen receptors (ERs, ERα and ERβ) and ezrin expression; however, reports have been conflicting. Using histologically documented staging of cervical biopsies, we determined ezrin and ER relationships during CXCA development. METHODS: Immunoreactive (ir) ezrin, ir-ERα, and ir-ERβ were studied in normal epithelium, carcinoma in situ/cervical intraepithelial neoplasia (CIN) 1 to 3, and local invasion or metastatic CXCA...
May 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27678101/toward-understanding-myometrial-regulation-metabolomic-investigation-reveals-new-pathways-of-oxytocin-and-ritodrine-activity-on-the-myometrium
#20
Enitome E Bafor, Edward G Rowan, RuAngelie Edrada-Ebel
In recent times, additional pathways involved in the regulation of the myometrium have been suggested. This also holds true for the effect of drugs such as oxytocin (OT) and β-adrenergic agonists on the myometrium. Knowledge of these additional pathways will certainly prove useful in designing better therapies for pathologies of the myometrium. This study was therefore aimed at investigating the possibility of other pathways involved in the activities of both OT and ritodrine (RIT; a β-adrenergic agonist) in the myometrium by utilizing metabolomics and bioinformatics...
May 2017: Reproductive Sciences
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