Abstract:
:Ovarian progesterone secretion during the diestrus stage of the estrous cycle is produced by luteal cells derived from granulosa and thecal cells after the differentiation process that follows ovulation. Our results show that blockade of the preovulatory rise of ovarian ornithine decarboxylase (ODC), a key enzyme in polyamine biosynthesis, by treatment with the specific inhibitor alpha-difluoromethylornithine (DFMO) leads to a significant decrease in the ovarian progesterone content and a dramatic fall in the plasma levels of this hormone during the following diestrus. The same inhibition was produced in spite of the fact that both luteinizing and follicle stimulating hormones were given concomitantly with DFMO. On the other hand, the acute rise in the plasma progesterone levels observed after administration of human chorionic gonadotropin to mice at different periods of the estrous cycle was not affected by DFMO administration. Our results indicate that although elevated levels of ODC are not required for acute ovarian steroidogenesis, the preovulatory peak of ovarian ODC activity observed in the evening of proestrus may be critical for the establishment of a constitutive steroidogenic pathway and progesterone secretion by the corpus luteum during the diestrus stage of the murine estrous cycle.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Bastida CM,Tejada F,Cremades A,Peñafiel Rdoi
10.1016/S0006-291X(02)00191-2subject
Has Abstractpub_date
2002-04-26 00:00:00pages
106-11issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(02)00191-2journal_volume
293pub_type
杂志文章abstract::Endothelin-1 acts as a potent autocrine and paracrine mediator in the kidney. Glomeruli and renal arterioles also express functional thrombin receptors which mediate the cellular effects of thrombin. Using the binding on glomerular epithelial cells of 125I-labeled ATAP2, a monoclonal antibody raised against the functi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.2796
更新日期:1995-12-14 00:00:00
abstract::We present an easy and sensitive method for measuring thiamine and its phosphate esters in small biological samples of microalgae (Amphidinium carterae Hulburt and Nitzschia microcephala Grun). The method consists of extraction of thiamine and its derivatives in acid solution, followed by liquid chromatography with fl...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2002.6438
更新日期:2002-02-22 00:00:00
abstract::A major component of amyloid deposits found in Alzheimer disease and Down syndrome is the beta/A4 peptide, which is derived from the Alzheimer amyloid protein precursor (APP). Recent evidence indicates that increases in APP expression and/or beta/A4 peptide accumulation may underlie the amyloidosis characteristic of t...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.2527
更新日期:1993-12-15 00:00:00
abstract::Animals and plants respond to bacterial infections and environmental stresses by inducing overlapping repertoires of defense genes. How the signals associated with infection and abiotic stresses are differentially integrated within a whole organism remains to be fully addressed. We show that the transcription of a Cae...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.08.190
更新日期:2007-11-16 00:00:00
abstract::The three mammalian Raf proteins (A-Raf, B-Raf, and C-Raf) are key components of the MAPK pathway. Although diverse functions have been proposed for Raf kinases, it is still not clear how interacting proteins contribute to differences in the signaling functions of the three Raf kinases. Here, we report the comparative...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2019.05.089
更新日期:2019-07-05 00:00:00
abstract::Oligo/poly alpha2,8 deaminoneuraminic acid (KDN), a unique posttranslational protein modification, was found on megalin and a not yet characterized 150 kDa glycoprotein. We purified this glycoprotein from rat testis and identified it as ceruloplasmin. Furthermore, immunoprecipitated ceruloplasmin from rat thymus, ovar...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(02)00718-0
更新日期:2002-07-19 00:00:00
abstract::A new point mutation was found in the coding sequence of the secretor FUT2 gene. This missense mutation with an A-->T substitution at nucleotide 385 resulted in an amino acid change of Ile129 to Phe129. This mutation showed a clear genetic trait in an Indonesian pedigree and, when appearing in a homozygous form, it wa...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1996.0293
更新日期:1996-02-27 00:00:00
abstract::GTP gamma S-dependent phospholipase D (PLD) activity time-dependently increased during differentiation of rat C6 glioma cells to astrocytic phenotypes induced by dibutyryl cyclic AMP (dbcAMP)/theophylline. The changes in PLD mRNA level were examined by reverse transcriptase-polymerase chain reaction (RT-PCR) method us...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1996.1201
更新日期:1996-08-14 00:00:00
abstract::Pancreatic islets of Langerhans were perifused with Krebs-bicarbonate solution containing glucose (5 and 10 mM). The perifusate was spiked with tetradeuterated hepoxilin A3 and was extracted and analysed by gas chromatography-mass spectrometry using NICI detection. Evidence is presented showing the presence of hepoxil...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(85)90137-8
更新日期:1985-04-30 00:00:00
abstract::Activation-induced cytidine deaminase (AID) is an inducible gene that plays a critical role in Ig class switch recombination and somatic hypermutation in B cells. We explored the mechanisms by which IL-4 induces AID expression in mouse B cells. IL-4 increased AID expression and over-expression of Stat6 further augment...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.07.022
更新日期:2007-09-21 00:00:00
abstract::Post-translational modification (PTM) of proteins plays a crucial role in health and disease by affecting numerous aspects of protein structure, function, stability and subcellular localization. Protein S-nitrosylation is one type of PTM that involves the covalent modification of cysteine sulfhydryl groups with nitric...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2014.01.042
更新日期:2014-02-14 00:00:00
abstract::Several genes are significantly mutated in breast cancer but only a small percentage of mutations are well-known to contribute to cancer development. FASN is involved in de novo lipogenesis and the regulation of ERα signaling. However, the effect of genetic mutations affecting FASN in breast cancer has not thoroughly ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2020.05.172
更新日期:2020-08-20 00:00:00
abstract::Neuroblastoma (NB) expresses the tyrosine kinase receptors c-Kit, PDGFR-alpha and -beta-targets for STI-571. We investigated a possible combination therapy of STI-571 with retinoic acid (RA) and gamma-irradiation on NB cell viability in vitro. Expression of tyrosine kinase receptors and their ligands was examined in 6...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.02.059
更新日期:2006-04-21 00:00:00
abstract::Recent evidence shows that Silver-Russell syndrome (SRS), the major functional deficit of which is limited growth, both intrauterine and postnatal, is due to a double dose of a gene within 7p11.2-p13 that is normally expressed exclusively from the maternal copy. Of the several growth-related genes in this chromosomal ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.5500
更新日期:2001-09-07 00:00:00
abstract::Oleoyl coenzyme A and other acyl-CoA derivatives inhibited ADP or thrombin-induced aggregation of platelets. Arachidonic acid-induced aggregation was also inhibited, but not the slower aggregation caused by 1-oleoyl-2-acetylglycerol or tetradecanoyl-phorbol-13-acetate. Coenzyme A and free fatty acids had little or no ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(88)80946-x
更新日期:1988-10-31 00:00:00
abstract:AIM:AF1q has a precise oncogenic function. The purpose of this study is to investigate whether CBD has an effect on the AF1q/ICAM-1 regulatory axis in Burkitt's lymphoma (BL), and thus has potential to enhance immunotherapy and reduce side effects. METHODS:We established BL cell lines with altered AF1q expression usin...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2019.10.001
更新日期:2019-11-26 00:00:00
abstract::Syntaxins are a family of membrane proteins believed to participate in docking/fusing of arriving vesicles during membrane sorting and secretion. Of the six mammalian syntaxins known, only brain syntaxin 1A/1B has been biochemically characterized in its endogenous form. Syntaxin 4 mRNA is expressed in selective tissue...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.2154
更新日期:1995-08-15 00:00:00
abstract::Lung cancer accounts for the highest death rate among cancers worldwide, with most patients being diagnosed with non-small cell lung cancer (NSCLC), urging more effective therapies. We report that JK273, a pyrrolo[2,3-d]pyrimidine analog, which inhibits α4 integrin signaling, showed a selective cytotoxic effect agains...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.07.096
更新日期:2017-09-16 00:00:00
abstract::Partially purified preparations of O6-alkylguanine-DNA alkyltransferase from rat liver and E. coli were tested for their ability to repair O4-methylthymine in a methylated poly(dT) X poly(dA) substrate. The bacterial preparation readily carried out this reaction, but no loss of O4-methylthymine was obtained with the r...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(84)90416-9
更新日期:1984-08-30 00:00:00
abstract:OBJECTIVES:The purpose of this study was to investigate the relationship between huntingtin-associated protein1 (HAP1) gene and radiation therapy of breast cancer cells. METHODS:HAP1 gene was transfected into breast cancer MCF-7 cells, which was confirmed by quantitative reverse transcription-polymerase chain reaction...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2014.11.052
更新日期:2015-01-02 00:00:00
abstract::Heat shock induces a variety of biological events including gene activation, cell cycle arrest, and apoptosis. Heat shock has recently been shown to be potentially useful when combined with radiation in cancer therapy, probably because, in mammalian cells, heat inhibits the repair of double-strand breaks (DSBs) induce...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.01.073
更新日期:2005-03-25 00:00:00
abstract::Glioblastoma (GBM) is a lethal brain tumor composed of heterogeneous cellular populations including glioma stem cells (GSCs) and differentiated non-stem glioma cells (NSGCs). While GSCs are involved in tumor initiation and propagation, NSGCs' role remains elusive. Here, we demonstrate that NSGCs undergo senescence and...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2016.01.071
更新日期:2016-02-05 00:00:00
abstract::The fusion of myoblasts to myotubes requires an endogenous soluble metalloendoprotease. To determine whether this protease is released by fusing myoblasts, or stays within the cell, we examined the effects of membrane-impermeant and a membrane-permeant metalloendoprotease inhibitors. Membrane-permeant 1,10-phenanthrol...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(87)80145-6
更新日期:1987-08-31 00:00:00
abstract::Cancer cell adhesion to vascular endothelium is a critical process in hematogenous metastasis. We hypothesized that breast cancer cells express ligands that bind under blood flow conditions to E-selectin expressed by endothelial cells. At a hemodynamic wall shear rate, BT-20 and MDA-MB-468 breast cancer cells adhered ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2011.02.061
更新日期:2011-03-18 00:00:00
abstract::By using a subtraction-enhanced display technique, we identified a cDNA clone representing alpha-prothymosin, from rat hepatocellular carcinoma (HCC). alpha-Prothymosin has been reported to be involved in cell proliferation and regulated by c-myc gene in vitro. In the present study, we investigated the gene expression...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1997.6377
更新日期:1997-03-27 00:00:00
abstract::Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary renal disease. ADPKD is characterized by cyst development that leads to abnormal kidney structure. Renal tubules are a fundamental unit of architecture, so controls of tubular growth and formation are important for proper kidney functio...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.02.002
更新日期:2012-03-16 00:00:00
abstract::We constructed a plasmid-based expression vector carrying the murine metallothionein gene promoter, the human preprorenin gene, the Tn5 neomycin phosphotransferase II gene, and a complete bovine papilloma virus genome. We were unsuccessful in cloning the preprorenin gene in E. coli when it was inserted into a plasmid ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(87)91395-7
更新日期:1987-03-13 00:00:00
abstract::Pancreatic carcinoma is characterized by a poor prognosis and lack of response to conventional therapy. The regulatory mechanisms for the rapid proliferation of pancreatic cancer cells and the particular aggressiveness of this cancer are still not fully understood. In mammalian cells, three MAPK families including ERK...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.4595
更新日期:2001-03-30 00:00:00
abstract::Entry of human immunodeficiency virus type 1 (HIV-1) virion into host cells involves three major steps, each being a potential target for the development of entry inhibitors: gp120 binding to CD4, gp120-CD4 complex interacting with a coreceptor, and gp41 refolding to form a six-helix bundle. Using a D-amino acid decap...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.06.150
更新日期:2006-09-08 00:00:00
abstract::Loaded under whole cell patch-clamp configuration, the caged Ca2+ molecule DM-nitrophen was used to increase [Ca2+]i rapidly and reversibly in isolated Deiters cells of the organ of Corti. Photolysis of DM-nitrophen increased [Ca2+]i from resting concentrations of 20-50 nM to values above microM, as measured with the ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.1841
更新日期:1994-06-30 00:00:00