Abstract:
:We aimed to confirm the ovarian site of gonadotrophin surge-attenuating factor (GnSAF) production and produce granulosa/luteal cell-conditioned medium (G/LCM) containing GnSAF for purification studies. Blue dye affinity chromatography followed by pseudochromatofocusing of G/LCM yielded bioactive fractions at pH 5.74 and 5.77. The former had a major 60-66 kDa band with an internal amino acid sequence of EPQVYVHAP following tryptic digestion. A rat polyclonal antiserum (rPAb) raised against this band completely blocked in-vitro GnSAF bioactivity in human follicular fluid, serum and G/LCM. GnSAF bioactivity was localized to a 64 kDa band of serum-free G/LCM and following 2D gel electrophoresis, one of the spots recognized by Western blotting with the GnSAF rPAb had an N-terminal amino acid sequence of NH-XVPQGNAXXN. Neither amino acid sequence had significant homology with proteins in the human genome database. When ovarian tissues from spontaneously cycling women were cultured under serum-free conditions, neither theca- nor stroma-conditioned media contained GnSAF bioactivity. However, granulosa cell-conditioned medium significantly reduced GnRH-induced LH secretion, an effect that was reversed by incubation with the GnSAF rPAb. In conclusion, we have confirmed that human granulosa cells produce GnSAF within the ovary and have two candidate amino acid sequences for GnSAF. We have also demonstrated that serum-free granulosa cell culture constitutes the method of choice for the characterization of GnSAF since recovery of bioactivity is superior in the presence of fewer serum proteins.
journal_name
Mol Hum Reprodjournal_title
Molecular human reproductionauthors
Fowler PA,Sorsa-Leslie T,Cash P,Dunbar B,Melvin W,Wilson Y,Mason HD,Harris Wdoi
10.1093/molehr/8.9.823subject
Has Abstractpub_date
2002-09-01 00:00:00pages
823-32issue
9eissn
1360-9947issn
1460-2407journal_volume
8pub_type
杂志文章abstract::Follicular prostaglandin concentrations increase following the gonadotrophin surge in domestic animals and rodents approximately 10 h before follicle rupture, suggesting a unifying role for prostaglandins in the timing of ovulation. However, little is known about prostaglandin production by the primate ovulatory folli...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/7.8.731
更新日期:2001-08-01 00:00:00
abstract::The molecular mechanism of stress-associated reproductive dysfunction is complex and largely unknown. This study was designed to systematically analyze molecular effects of systemic in vivo blockade of α1-adrenergic receptors (α1-ADRs) on stress-induced disturbance of cAMP/cGMP signaling in testosterone-producing Leyd...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gat052
更新日期:2014-01-01 00:00:00
abstract:STUDY QUESTION:Which different pathways and functions are altered in rhesus monkey oocytes that fail to mature after an ovulatory stimulus? SUMMARY ANSWER:Failed to mature (FTM) oocytes complete a large portion of the transition in transcriptome composition associated with normal maturation, but also manifest numerous...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gay032
更新日期:2018-10-01 00:00:00
abstract::Persistent organohalogen pollutants (POPs) have been suggested to be involved in changing the proportion of ejaculated Y-bearing sperm. The androgen receptor (AR), aryl hydrocarbon receptor (AHR) and aryl hydrocarbon receptor repressor (AHRR) may modulate the effect of POPs with regard to previously observed sperm Y:X...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gal114
更新日期:2007-04-01 00:00:00
abstract::Prostaglandin E2 (PGE2) plays a key role in the maintenance of human pregnancy and labour onset. PGE2 can elicit diverse actions within the uterus depending on the PGE2 receptors (EP1, EP2, EP3 and EP4) expressed. By signalling through different intracellular pathways the EP receptors may inhibit or promote smooth mus...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gah158
更新日期:2005-04-01 00:00:00
abstract:STUDY QUESTION:Could a more detailed evaluation of marmoset spermatogonial morphology, kinetics and niches using high-resolution light microscopy (HRLM) lead to new findings? SUMMARY ANSWER:Three subtypes of marmoset undifferentiated spermatogonia, which were not evenly distributed in terms of number and position alon...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gay017
更新日期:2018-06-01 00:00:00
abstract::Virtually all testicular germ cell tumours originate from a common precursor, the carcinoma in situ (CIS) cell. The precise nature of the molecular mechanisms leading to CIS remains largely unknown. We performed the first systematic analysis of gene expression in testis with CIS compared to normal testis by the differ...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gah059
更新日期:2004-06-01 00:00:00
abstract::The causes for recurrent spontaneous abortion (RSA) remain unknown in a large proportion of the cases. Human leukocyte antigen (HLA)-G and HLA-E are expressed on invasive trophoblast cells, and are supposed to confer to materno-fetal tolerance. A total of 14 different nucleotide sequences have been described for HLA-G...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/7.4.373
更新日期:2001-04-01 00:00:00
abstract::Multiple types and subtypes, including splice variants, of cyclic nucleotide phosphodiesterases (PDE) have been shown to be expressed in various tissues and organs. They control the intracellular level of cyclic nucleotides and are involved in hormonal signalling. In human spermatozoa, PDE play an important role in th...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/5.8.732
更新日期:1999-08-01 00:00:00
abstract::Success rate in human pregnancies is believed to be very low and sex-specific mechanisms may operate in prenatal loss. Assuming a sex-differential in prenatal loss exists, we examined genetic markers in biologically plausible targets in the HLA complex, other immune system-related and iron-regulatory genes in 388 heal...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gaq047
更新日期:2010-10-01 00:00:00
abstract::An altered inflammatory activity due to functionally relevant polymorphisms of the innate immune system may influence pathways leading to labour and, therefore, impact on the frequency of preterm birth. We examined five polymorphisms of the innate immune system in a large cohort of preterm very-low-birth-weight (VLBW,...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gah120
更新日期:2004-12-01 00:00:00
abstract::Fluorescent in situ hybridization (FISH) studies of human preimplantation embryos have demonstrated a high proportion of chromosomal mosaicism. To investigate the different timings and nature of chromosomal mosaicism, we developed single cell multiplex fluorescent (FL)-PCR to distinguish meiotic and mitotic cell divis...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gah017
更新日期:2004-02-01 00:00:00
abstract::We have entered a new era of genomics in biomedical research with the availability of genome-wide sequences and expression data, resulting in the identification of a huge number of novel reproductive genes. The challenge we are facing today is how to determine the function of those novel and known genes and their role...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gam069
更新日期:2007-11-01 00:00:00
abstract::Interleukin (IL)-33, a newly described member of the IL-1 family, has been reported to facilitate primary tumor progression and metastatic dissemination. However, its biological function on decidual stromal cells (DSCs) remains unclear. In this study, we tested the hypothesis whether IL-33 promotes proliferation and i...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gat094
更新日期:2014-04-01 00:00:00
abstract::Human endometrial stromal cells (ESC) can produce a variety of chemokines, especially after inflammatory stimulation. Interferon-gamma-inducible protein-10 (IP-10) is a potent chemoattractant for lymphocytes, and belongs to the family of non-ELR CXC chemokines. The expression of IP-10 in ESC after stimulation with int...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/8.2.176
更新日期:2002-02-01 00:00:00
abstract:STUDY QUESTION:What is the association between placental formyl peptide receptor 2 (FPR2) and trophoblast and endothelial functions in pregnancies affected by foetal growth restriction (FGR)? SUMMARY ANSWER:Reduced FPR2 placental expression in idiopathic FGR results in significantly altered trophoblast differentiation...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gax067
更新日期:2018-02-01 00:00:00
abstract::Intense macrophage infiltration is observed during luteolysis in various animals including women; however, we still do not know how macrophage infiltration into the human corpus luteum (CL) during luteolysis is regulated. In this study, we examined the expression, localization and regulation of an important chemokine ...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gav028
更新日期:2015-08-01 00:00:00
abstract::Matrix metalloproteinases (MMP), tissue inhibitors of metalloproteinases (TIMP), and MMP-TIMP interactions may contribute to the highly programmed process of embryo implantation. The loss of the delicate MMP-TIMP balance may lead to abnormal implantation. The role of TIMP-4 in mouse implantation has not been reported....
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gag019
更新日期:2003-03-01 00:00:00
abstract::The endometrium plays a key role in reproduction, and this function is tightly regulated by endogenous and xenobiotic steroids. Sulphation, catalysed by members of the sulphotransferase (SULT) enzyme family, is a major deactivating mechanism for steroid hormones and we have investigated the expression and regulation i...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/5.11.995
更新日期:1999-11-01 00:00:00
abstract::Zinc dynamics are essential for oocyte meiotic maturation, egg activation, and preimplantation embryo development. During fertilisation and egg activation, the egg releases billions of zinc atoms (Zn2+) in an exocytotic event termed the 'zinc spark'. We hypothesised that this zinc transport and exocytosis is dependent...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gaaa017
更新日期:2020-04-24 00:00:00
abstract::Male and female preimplantation mammalian embryos differ not only in their chromosomal complement, but in their proteome and subsequent metabolome. This phenomenon is due to a finite period during preimplantation development when both X chromosomes are active, between embryonic genome activation and X chromosome inact...
journal_title:Molecular human reproduction
pub_type: 杂志文章,评审
doi:10.1093/molehr/gaq042
更新日期:2010-08-01 00:00:00
abstract:STUDY QUESTION:Is oxidative stress associated with the A disintegrin and metalloproteases (ADAM) metallopeptidase domain 17 (ADAM17)/Notch signalling pathway and fibrosis in the development of endometriosis? SUMMARY ANSWER:Oxidative stress is correlated with hyperactivation of the ADAM17/Notch signalling pathway and a...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gax028
更新日期:2017-07-01 00:00:00
abstract::We have previously shown that the estrogen responsiveness of the human lactoferrin gene in a transient transfection system is mediated through an imperfect estrogen response element (ERE) and a steroidogenic factor 1 binding element (SFRE) 26 bp upstream from ERE. Reporter constructs containing SFRE and ERE respond to...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/8.1.58
更新日期:2002-01-01 00:00:00
abstract::Preimplantation factor (PIF) is detected in the serum of women shortly after fertilization; its origin, however, has not been established. In this study, the embryonal origin of PIF was investigated and partial characterization of the factor was carried out. Culture media from viable human 2-8-cell stage embryos and m...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/2.11.883
更新日期:1996-11-01 00:00:00
abstract::Medium-chain acyl-CoA dehydrogenase (MCAD) deficiency is the most common defect in fatty acid oxidation. The disease is inherited in an autosomal recessive fashion (carrier frequency around 1 in 70) and probably affects as many as 1 in 10000 new-borns. Affected children usually present within the two first years of li...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/6.12.1165
更新日期:2000-12-01 00:00:00
abstract::Binder of SPerm (BSP) proteins are a family of proteins expressed exclusively in the male reproductive tract (seminal vesicles or epididymis) of several mammalian species. They are known to promote capacitation, a sperm maturation step essential for fertilization. Our recent studies have shown that in human, the Binde...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gau006
更新日期:2014-05-01 00:00:00
abstract::Patients with rare overgrowth disorders, such as Beck-Wiedemann syndrome and Simpson-Golabi-Behmel syndrome, are predisposed to embryonal tumours, including Wilms' tumour of the kidney. Therefore, these disorders offer a link between hyperplastic growth and cancer. Genetic lesions at chromosome 11p15 have been associa...
journal_title:Molecular human reproduction
pub_type: 杂志文章,评审
doi:10.1093/molehr/3.2.157
更新日期:1997-02-01 00:00:00
abstract::The involvement of protein kinases in platelet activating factor (PAF)-induced acrosome reaction of human spermatozoa was investigated using specific inhibitors of protein kinase A (PKA), protein kinase C (PKC) and protein tyrosine kinase (PTK). PAF (10(-9)-10(-11) M) treatment of spermatozoa enhanced the acrosome rea...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/2.6.401
更新日期:1996-06-01 00:00:00
abstract::Human mitochondrial DNA (mtDNA) rearrangements, including more than 150 deletions and insertions, accumulate with age and are responsible for certain neuromuscular diseases. Human oocytes, arrested for up to 50 years, may express certain mtDNA rearrangements possibly affecting function. Investigations have previously ...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/5.10.927
更新日期:1999-10-01 00:00:00
abstract::Early embryonic development is characterized by drastic changes in chromatin structure that affects the accessibility of the chromatin. In human, the chromosome reorganization and its involvement in the first linage segregation are poorly characterized due to the difficulties in obtaining human embryonic material and ...
journal_title:Molecular human reproduction
pub_type: 杂志文章
doi:10.1093/molehr/gaaa048
更新日期:2020-09-01 00:00:00