Abstract：
BACKGROUND:Pregnancy-associated plasma protein-A2 (PAPP-A2) is consistently upregulated in the placentae of pregnancies complicated by preeclampsia and fetal growth restriction. The causes and significance of this upregulation remain unknown, but it has been hypothesized that it is a compensatory response to improve placental growth and development. We predicted that, if the upregulation of PAPP-A2 in pregnancy complications reflects a compensatory response, then deletion of Pappa2 in mice would exacerbate the effects of a gene deletion previously reported to impair placental development: deficiency of matrix metalloproteinase-9 (MMP9). METHODS:We crossed mice carrying deletions in Pappa2 and Mmp9 to produce pregnancies deficient in one, both, or neither of these genes. We measured pregnancy rates, number of conceptuses, fetal and placental growth, and the histological structure of the placenta. RESULTS:We found no evidence of reduced fertility, increased pregnancy loss, or increased fetal demise in Mmp9 -/- females. In pregnancies segregating for Mmp9, Mmp9 -/- fetuses were lighter than their siblings with a functional Mmp9 allele. However, deletion of Pappa2 did not exacerbate or reveal any effects of Mmp9 deficiency. We observed some effects of Pappa2 deletion on placental structure that were independent of Mmp9 deficiency, but no effects on fetal growth. At G16, male fetuses were heavier than female fetuses and had heavier placentae with larger junctional zones and smaller labyrinths. CONCLUSIONS:Effects of Mmp9 deficiency were not exacerbated by the deletion of Pappa2. Our results do not provide evidence that upregulation of placental PAPP-A2 represents a mechanism to compensate for impaired fetal growth.
journal_name
Reprod Biol Endocrinoljournal_title
Reproductive biology and endocrinology : RB&Eauthors
Christians JK,Lennie KI,Huicochea Munoz MF,Binning Ndoi
10.1186/s12958-018-0376-4subject
Has Abstractpub_date
2018-06-12 00:00:00pages
58issue
1issn
1477-7827pii
10.1186/s12958-018-0376-4journal_volume
16pub_type
杂志文章abstract：BACKGROUND:Di(2-ethylhexyl) phthalate (DEHP) exposure reduces embryo implantations, increases embryonic loss, and decreases fetal body weights. However, whether it is associated with the alteration of luteal function remains unknown. Thus, our aim in this study was to explore the effect and mechanism of DEHP on luteal ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-015-0013-4
更新日期：2015-03-03 00:00:00
abstract：BACKGROUND:Relaxin levels in seminal plasma have been associated with positive effects on sperm motility and quality, and thus having potential roles in male fertility. However, the origin of seminal relaxin, within the male reproductive tract, and the moment of its release in the vicinity of spermatozoa remain unclear...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-015-0043-y
更新日期：2015-05-20 00:00:00
abstract：OBJECTIVE:To assess the effectiveness and safety of omega-3 fatty acid for patients with PCOS. METHODS:In this meta-analysis, data from randomized controlled trials were obtained to assess the effects of omega-3 fatty acid versus placebo or western medicine in women with PCOS. The study's registration number is CRD420...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章,meta分析,评审
doi：10.1186/s12958-018-0346-x
更新日期：2018-03-27 00:00:00
abstract：BACKGROUND:Embryo selection has been an integral feature of in vitro fertilization (IVF) almost since its inception. Since the advent of extended blastocyst stage embryo culture, and especially with increasing popularity of elective single embryo transfer (eSET), the concept of embryo selection has increasingly become ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-13-3
更新日期：2015-01-11 00:00:00
abstract：BACKGROUND:The transformation of endometrium into decidua is essential for normal implantation of the blastocyst. However, the post-transcriptional regulation and the miRNAs involved in decidualization remain poorly understood. Here, we examined microRNA-181a (miR-181a) expression in decidualized human endometrial stro...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-015-0019-y
更新日期：2015-03-26 00:00:00
abstract：BACKGROUND:Adults with polycystic ovary syndrome (PCOS) can have multiple metabolic abnormalities. However, studies in the adolescent population are still limited and these results seem to vary widely. This study was to investigate the metabolic abnormalities in adolescents with PCOS in South China and the potential ri...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-8-142
更新日期：2010-11-17 00:00:00
abstract：BACKGROUND:A limited number of publications have assessed the prevalence of hypertension (HTN) in polycystic ovary syndrome (PCOS) patients with inconclusive results. Since in general populations the occurrence of hypertension is related to age per se, we investigated the prevalence (P) / relative risk (RR) of HTN in p...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章,评审
doi：10.1186/s12958-020-00576-1
更新日期：2020-03-17 00:00:00
abstract：BACKGROUND:TGF-beta is a multifunctional growth factor involved in regulating a variety of cellular activities. Unlike mammals, the function of TGF-beta in the reproduction of lower vertebrates, such as fish, is not clear. Recently, we showed that TGF-beta1 inhibits gonadotropin- and 17alpha, 20beta-dihydroxyprogestero...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-3-53
更新日期：2005-09-30 00:00:00
abstract：BACKGROUND:Several medical conditions can affect and disrupt human sexuality. The alteration of sexuality in these medical conditions often hinder effective communication and empathy between the patients and their sexual partners because of cultural attitudes, social norms and negative feelings such as anxiety and guil...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-8-118
更新日期：2010-10-13 00:00:00
abstract：BACKGROUND:Oocyte donation is a medical technique used principally for woman with ovarian failure. Optimizing donor recruitment is essential to obtain the best results with this technique. Understanding how donor parameters influence outcome for the recipients is fundamental. The aim of this study was to determine whet...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-016-0138-0
更新日期：2016-01-19 00:00:00
abstract：BACKGROUND:Spontaneous abortion is one of the most common complications in early pregnancy. A preventive test to identify women who will experience a miscarriage, even before first symptoms occur, is not established. Activation of maternal immunological tolerance seems to be essential for early fetal development and va...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-018-0411-5
更新日期：2018-09-28 00:00:00
abstract：BACKGROUND:The placenta is an essential organ that provides nutrients and oxygen to the developing fetus and removes toxic waste products from the fetal circulation. Maintaining placental blood osmotic pressure and blood flow is crucial for viable offspring. The renin-angiotensin system (RAS) in the placenta is a key p...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-015-0088-y
更新日期：2015-08-12 00:00:00
abstract：BACKGROUND:Puberty onset is a complex, organized biological process with multilevel regulation, and its physiopathological mechanisms are yet to be elucidated. RFRP-3, the mammalian ortholog to gonadotropin-inhibitory hormone, is implicated in inhibiting the synthesis and release of gonadotropin in mammals. However, it...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-017-0254-5
更新日期：2017-05-02 00:00:00
abstract：BACKGROUND:Hatching is crucial for mammalian embryo implantation, since difficulties during this process can lead to implantation failure, ectopic pregnancy and consequent infertility. Despite years of intensive researches, how internal and external factors affecting embryo hatch are still largely unclear. METHODS:The...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-018-0356-8
更新日期：2018-04-21 00:00:00
abstract：BACKGROUND:Human uterine leiomyoma (fibroids; LYO) are the most common benign neoplasms in reproductive-aged women. Dysregulated extracellular matrix and irregular LYO reversion-inducing cysteine-rich protein with Kazal motifs (RECK) expression are thought to be mediated by aberrant microRNA (miR) expression. The relat...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-016-0180-y
更新日期：2016-08-17 00:00:00
abstract：BACKGROUND:Brain-derived ectonucleoside triphosphate diphosphohydrolases (NTPDases) have been known as plasma membrane-incorporated enzymes with their ATP-hydrolyzing domain outside of the cell. As such, these enzymes are thought to regulate purinergic intercellular signaling by hydrolyzing ATP to ADP-AMP, thus regulat...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章,评审
doi：10.1186/1477-7827-7-63
更新日期：2009-06-16 00:00:00
abstract：BACKGROUND:The aim of this study was to evaluate the effects of vitrification on morpho-functional parameters (blastomere/chromatin integrity and bioenergy/oxidative potential) of mouse preimplantation embryos. METHODS:In vivo produced mouse (4/16-cell, morulae and blastocyst-stage) embryos were randomly divided into ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-11-27
更新日期：2013-04-03 00:00:00
abstract：:Human embryonic stem cells (hESC) have emerged as attractive candidates for cell-based therapies that are capable of restoring lost cell and tissue function. These unique cells are able to self-renew indefinitely and have the capacity to differentiate in to all three germ layers (ectoderm, endoderm and mesoderm). Harn...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 历史文章,杂志文章,评审
doi：10.1186/s12958-015-0005-4
更新日期：2015-02-22 00:00:00
abstract：BACKGROUND:The syncytialization of cytotrophoblast cells to syncytiotrophoblast is central to human placental transport and hormone production. Many techniques for in vitro study of this process have been proposed and new investigators to the field may find the literature in the field daunting. Here, we present a strai...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-015-0070-8
更新日期：2015-07-09 00:00:00
abstract：BACKGROUND:High levels of dopamine (DA) were described in human ovary and recently evidence for DA receptors in granulosa and luteal cells has been provided, as well. However, neither the full repertoire of ovarian receptors for DA, nor their specific role, is established. Human granulosa cells (GCs) derived from women...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-5-40
更新日期：2007-10-25 00:00:00
abstract：BACKGROUND:Bovine luteal parenchymal cells express class II major histocompatibility complex (MHC) molecules and stimulate class II MHC-dependent activation of T cells in vitro. The ability of a class II MHC-expressing cell type to elicit a response from T cells in vivo is also dependent on expression of costimulatory ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-5-5
更新日期：2007-01-31 00:00:00
abstract：BACKGROUND:The alterations of the glutathione peroxidase enzyme complex system occur in physiological conditions such as aging and oxidative stress consequent to strenuous exercise. METHODS:Authors optimize the spectrophotometric method to measure glutathione peroxidase activity in rat red blood cell membranes. RESUL...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-7-7
更新日期：2009-01-26 00:00:00
abstract：BACKGROUND:Premutation range CGGn repeats of the FMR1 gene denote risk toward primary ovarian insufficiency (POI), also called premature ovarian failure (POF). This prospective cohort study was undertaken to determine if X-chromosome inactivation skew (sXCI) is associated with variations in FMR1 CGG repeat length and, ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/s12958-017-0250-9
更新日期：2017-04-28 00:00:00
abstract：BACKGROUND:The objective of this study was to identify substantially increased proteins in bovine cystic follicular fluid (FF) in order to clarify the pathology and etiology of bovine ovarian follicular cysts (BOFC). METHODS:Proteins in normal and cystic FF samples were subjected to two-dimensional polyacrylamide gel ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-3-23
更新日期：2005-06-08 00:00:00
abstract：:Human spermatozoa generate low levels of reactive oxygen species in order to stimulate key events, such as tyrosine phosphorylation, associated with sperm capacitation. However, if the generation of these potentially pernicious oxygen metabolites becomes elevated for any reason, spermatozoa possess a limited capacity ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章,评审
doi：10.1186/1477-7827-3-67
更新日期：2005-11-29 00:00:00
abstract：BACKGROUND:The objectives of this study were to develop an easy and rapid method for measuring gene expression in a small number of cells by real-time PCR without RNA extraction and purification, and to use this method to determine more precisely IGF-I gene expression in the cumulus cells surrounding oocytes. METHODS:...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-3-59
更新日期：2005-10-27 00:00:00
abstract：OBJECTIVES:To report the occurrence of a rare case of a huge benign ovarian tumour (mucinous cystadenoma) in Jazan city, Saudi Arabia. PATIENTS:Our reported case was a middle-aged Saudi woman presented with marked abdominal distension and discomfort at the gynaecology clinic of Jazan General Hospital, Jazan city, Saud...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-8-24
更新日期：2010-03-11 00:00:00
abstract：BACKGROUND:Dehydroepinadrosterone (DHEA) supplementation improves pregnancy chances in women with diminished ovarian reserve (DOR), by possibly reducing aneuploidy. Since a large majority of spontaneous miscarriages are associated with aneuploidy, one can speculate that DHEA supplementation may also reduce miscarriage ...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-7-108
更新日期：2009-10-07 00:00:00
abstract：BACKGROUND:Leukocytes represent the predominant source of reactive oxygen species both in seminal plasma and in sperm suspensions and have been demonstrated to negatively influence sperm function and fertilization rate in assisted reproduction procedures. Peroxidase test is the standard method recommended by WHO to det...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-7-128
更新日期：2009-11-19 00:00:00
abstract：BACKGROUND:Despite the clinical outcomes of ovarian stimulation with either GnRH-agonist or GnRH-antagonist analogues for in vitro fertilization (IVF) being well analysed, the effect of analogues on oocyte/embryo quality and embryo development is still not known in detail. The aim of this case-control study was to comp...
journal_title：Reproductive biology and endocrinology : RB&E
pub_type： 杂志文章
doi：10.1186/1477-7827-7-103
更新日期：2009-09-25 00:00:00
