共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
Background
The paca is a South American rodent with potential as a commercial food animal. We examined paca placenta as part of a wider effort to understand the reproductive biology of this species. 相似文献3.
Phelipe O Favaron Anthony M Carter Carlos E Ambrósio Adriana C Morini Andrea M Mess Moacir F de Oliveira Maria A Miglino 《Reproductive biology and endocrinology : RB&E》2011,9(1):55
Background
Sigmodontinae, known as "New World rats and mice," is a large subfamily of Cricetidae for which we herein provide the first comprehensive investigation of the placenta. 相似文献4.
Background
Prolactin-related proteins (PRPs) are specific proteins of the growth hormone/prolactin (GH/PRL) family in bovine placenta. This study reports the identification and sequencing of a full-length cDNA for two new members of bovine PRPs, bPRP-VIII and -IX, and their localization and quantitative expression in bovine placenta. 相似文献5.
Koichi Ushizawa Toru Takahashi Misa Hosoe Keiichiro Kizaki Yasuyuki Abe Hiroshi Sasada Eimei Sato Kazuyoshi Hashizume 《BMC developmental biology》2007,7(1):16
Background
This study reports the identification of a full-length cDNA sequence for two novel caprine prolactin-related proteins (cPRP1 and cPRP6), and their localization and quantitative expression in the placenta. Caprine PRPs are compared with known bovine PRPs. We examined their evolution and role in the ruminant placenta. 相似文献6.
Kenta Watanabe Masato Tachibana Satoshi Tanaka Hidefumi Furuoka Motohiro Horiuchi Hiroshi Suzuki Masahisa Watarai 《BMC microbiology》2008,8(1):212
Background
The cell tropism of Brucella abortus, a causative agent of brucellosis and facultative intracellular pathogen, in the placenta is thought to be a key event of infectious abortion, although the molecular mechanism for this is largely unknown. There is a higher degree of bacterial colonization in the placenta than in other organs and many bacteria are detected in trophoblast giant (TG) cells in the placenta. In the present study, we investigated mechanism of B. abortus invasion into TG cells. 相似文献7.
Feng Y Shen J Streaker ED Lockwood M Zhu Z Low PS Dimitrov DS 《Arthritis research & therapy》2011,13(2):R59
Introduction
Folate receptor beta (FRβ) is only detectable in placenta and limited to some hematopoietic cells of myeloid lineage in healthy people. Studies have indicated that FRβ is over-expressed in activated macrophages in autoimmune diseases and some cancer cells. In this study we aimed to develop an FRβ-specific human monoclonal antibody (mAb) that could be used as a therapeutic agent to treat rheumatoid arthritis and other autoimmune diseases, as well as FRβ positive cancers. 相似文献8.
Patricia R Facciotti Rose EG Rici Durvanei A Maria Marcelo Bertolini Carlos E Ambrósio Maria A Miglino 《Reproductive biology and endocrinology : RB&E》2009,7(1):25-7
Background
Placental and fetal growth requires high rates of cellular turnover and differentiation, which contributes to conceptus development. The trophoblast has unique properties and a wide range of metabolic, endocrine and angiogenic functions, but the proliferative profile of the bovine placenta characterized by flow cytometry analysis and its role in fetal development are currently uncharacterized. Complete understanding of placental apoptotic and proliferative rates may be relevant to development, especially if related to the pathogenesis of pregnancy losses and placental abnormalities. 相似文献9.
Joanne L Harrison Clare L Adam Yvonne A Brown Jacqueline M Wallace Raymond P Aitken Richard G Lea David W Miller 《Reproductive biology and endocrinology : RB&E》2007,5(1):25-8
Background
Ghrelin is an orexigenic hormone principally produced by the stomach, but also by numerous peripheral tissues including the placenta. Ghrelin acts via growth hormone secretagogue receptors (GHSR-1a) to alter food intake, fat utilization, and cellular proliferation, and has been suggested to play a role in the developmental growth of the fetoplacental unit. The placental expression of ghrelin and its role in ruminant species is not known. We tested the hypotheses that ghrelin and its functional receptor, GHSR-1a, are present in tissues of the ovine placenta, and that their expression is linked to the stage of development. 相似文献10.
Background
Pregnancy-associated plasma protein A2 (PAPPA2) is an insulin-like growth factor binding protein (IGFBP) protease expressed in the placenta and upregulated in pregnancies complicated by pre-eclampsia. The mechanism linking PAPPA2 expression and pre-eclampsia and the consequences of altered PAPPA2 expression remain unknown. We previously identified PAPPA2 as a candidate gene for a quantitative trait locus (QTL) affecting growth in mice and in the present study examined whether this QTL affects placental PAPPA2 expression and, in turn, placental or embryonic growth. 相似文献11.
Ujjwal K Rout 《Reproductive biology and endocrinology : RB&E》2006,4(1):44-15
Background
Valproate, thalidomide and alcohol (ethanol) exposure during the first trimester of pregnancy is known to cause several developmental disorders. All these teratogens are known to pass the placental barrier and interfere directly with the normal development of the fetus. However, these teratogens also alter the formation and function of the placenta itself which may in turn affect the proper nourishment and development of the fetus. Optimum development of the placenta requires adequate invasion of trophoblast into the maternal uterine tissues. Changes in the migratory behavior of trophoblast by maternal exposure to these teratogens during placentogenesis may therefore alter the structure and function of the placenta. 相似文献12.
Background
The DefH9-iaaM gene fusion which is expressed specifically in placenta/ovules and promotes auxin-synthesis confers parthenocarpic fruit development to eggplant, tomato and tobacco. Transgenic DefH9-iaaM eggplants and tomatoes show increased fruit production due mainly to an improved fruit set. However, the weight of the fruits is also frequently increased. 相似文献13.
Background
Placenta-derived oestrogens have an impact on the growth and differentiation of the trophoblast, and are involved in processes initiating and facilitating birth. The enzyme that converts androgens into oestrogens, aromatase cytochrome P450 (P450arom), is encoded by the Cyp19 gene. In the placenta of the cow, expression of Cyp19 relies on promoter 1.1 (P1.1). Our recent studies of P1.1 in vitro and in a human trophoblast cell line (Jeg3) revealed that interactions of placental nuclear protein(s) with the E-box element at position -340 are required for full promoter activity. The aim of this work was to identify and characterise the placental E-box (-340)-binding protein(s) (E-BP) as a step towards understanding how the expression of Cyp19 is regulated in the bovine placenta. 相似文献14.
Schu-Rern Chern Sheng-Hsiang Li Chung-Hao Lu Edmund I Tsuen Chen 《Reproductive biology and endocrinology : RB&E》2010,8(1):127
Background
SERPINE2, also known as glia-derived nexin or protease nexin-1, belongs to the serine protease inhibitor (SERPIN) superfamily. It is one of the potent serpins that modulates the activity of the plasminogen activator (PA) and was implicated in tissue remodeling. In this study, we investigated the expression patterns of SERPINE2 in the mouse placenta and uterus during the estrous cycle, pregnancy, and lactation. 相似文献15.
Background
Trophoblast migration into maternal decidua is essential for normal pregnancy. It occurs in a defined time window, is spatially highly restricted, and is aberrant in some pathological pregnancies, but the control mechanisms are as yet ill-defined. At the periphery of the placenta, chorionic villi make contact with decidua to form specialised anchoring sites that feed interstitially migrating cytotrophoblast into the placental bed. 相似文献16.
Janjanin S Djouad F Shanti RM Baksh D Gollapudi K Prgomet D Rackwitz L Joshi AS Tuan RS 《Arthritis research & therapy》2008,10(4):R83
Introduction
Mesenchymal progenitor cells (MPCs) are multipotent progenitor cells in adult tissues, for example, bone marrow (BM). Current challenges of clinical application of BM-derived MPCs include donor site morbidity and pain as well as low cell yields associated with an age-related decrease in cell number and differentiation potential, underscoring the need to identify alternative sources of MPCs. Recently, MPC sources have diversified; examples include adipose, placenta, umbilicus, trabecular bone, cartilage, and synovial tissue. In the present work, we report the presence of MPCs in human tonsillar tissue. 相似文献17.
Sung-Kook Hong Carly S Levin Jamie L Brown Haiyan Wan Brad T Sherman Da Wei Huang Richard A Lempicki Benjamin Feldman 《BMC developmental biology》2010,10(1):42
Background
Many species form extraembryonic tissues during embryogenesis, such as the placenta of humans and other viviparous mammals. Extraembryonic tissues have various roles in protecting, nourishing and patterning embryos. Prior to gastrulation in zebrafish, the yolk syncytial layer - an extraembryonic nuclear syncytium - produces signals that induce mesoderm and endoderm formation. Mesoderm and endoderm precursor cells are situated in the embryonic margin, an external ring of cells along the embryo-yolk interface. The yolk syncytial layer initially forms below the margin, in a domain called the external yolk syncytial layer (E-YSL). 相似文献18.
Hong Zhou Guodong Fu Hui Yu Chun Peng 《Reproductive biology and endocrinology : RB&E》2009,7(1):146-10
Background
Transforming growth factor-beta (TGF-beta) is known to exert multiple regulatory functions in the human placenta, including inhibition of estrodial production. We have previously reported that TGF-beta1 decreased aromatase mRNA levels in human trophoblast cells. The objective of this study was to investigate the molecular mechanisms underlying the regulatory effect of TGF-beta1 on aromatase expression. 相似文献19.
Jenny Corthorn Sergio Rey Cecilia Chacón Gloria Valdés 《Reproductive biology and endocrinology : RB&E》2007,5(1):27
Background
In humans trophoblast invasion and vascular remodeling are critical to determine the fate of pregnancy. Since guinea-pigs share with women an extensive migration of the trophoblasts through the decidua and uterine arteries, and a haemomonochorial placenta, this species was used to evaluate the spatio-temporal expression of three enzymes that have been associated to trophoblast invasion, MMP-2, MMP-9 and tissue kallikrein (K1). 相似文献20.
Optimisation of transgene action at the post-transcriptional level: high quality parthenocarpic fruits in industrial tomatoes 总被引:1,自引:0,他引:1
Tiziana Pandolfini Giuseppe L Rotino Serena Camerini Roberto Defez Angelo Spena 《BMC biotechnology》2002,2(1):1