Abstract:
:To analyze the metabolisms of platelet-activating factor (PAF) and Thromboxane A2 (TxA2) when platelets and mesangial cells (MC) interact, immunoreactive thromboxane B2 (TxB2) and PAF were measured after incubation of cultured rat MC with platelets (P) and with platelet supernatants (PS). In both cases, TxB2 significantly decreased with respect to the P synthesis and to the PS content, suggesting an increased degradation of this metabolite or even the existence of a specific effect of MC upon platelet TxB2. When immunoreactive PAF was measured, results were comparable to those observed for TxB2. Moreover, when intrinsic mesangial cell synthesis of PAF was assessed by analyzing the [3H]-acetate incorporation by prelabeled MC in the HPLC fraction coeluting with cold PAF standards, it was possible to demonstrate that P or PS did not modify PAF synthesis in these cells. In summary, present results support the existence of a specific effect of mesangial cells upon platelet TxA2 and PAF.
journal_name
Life Scijournal_title
Life sciencesauthors
Arribas I,Rodríguez-Puyol D,García-Escribano MC,Díez-Marques ML,Pérez de Lema G,Rodríguez-Puyol Mdoi
10.1016/0024-3205(95)02030-msubject
Has Abstractpub_date
1995-01-01 00:00:00pages
957-65issue
10eissn
0024-3205issn
1879-0631pii
002432059502030Mjournal_volume
57pub_type
杂志文章相关文献
LIFE SCIENCES文献大全abstract::The purpose of this study is to report the development of a non-radioactive fluorescent peptide assay for measuring protein kinase C activity (PKC). The assay is based on a glycogen synthase derived fluorescent peptide that is phosphorylated by PKC. Phosphorylation causes the peptide to migrate toward the anode while ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(95)02149-d
更新日期:1995-01-01 00:00:00
abstract::The profile of endogenous opioid peptides in the peptide-rich fraction obtained from a homogenate of an ACTH-secreting human pituitary tumor is presented. Gradient RP-HPLC is used to separate the mixture into peptide constituents. A preparation of opioid receptors is used in a radioreceptor assay with ethorphine - a r...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(85)90225-5
更新日期:1985-11-11 00:00:00
abstract::Viperid, elapid and crotalid snake venoms were screened in vitro for antiviral activity against Sendai virus. The hemolysis of 10(8) human erythrocytes in 1 ml, caused by 70 HAU of Sendai virus, was abolished when the virions were pretreated with 10 ug of the viperid venom of Echis coloratus, and was considerably dimi...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(92)90015-h
更新日期:1992-01-01 00:00:00
abstract:AIMS:MicroRNA-1 (miR-1) has been demonstrated as a tumor-suppressive miRNA, which shows a down-regulated pattern in several human malignancies including hepatocellular carcinoma (HCC). However, the pathophysiologic roles of miR-1 and their mechanisms in HCC tumorigenesis are still not totally elucidated. MAIN METHODS:...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2012.08.015
更新日期:2012-10-05 00:00:00
abstract::The present study was designed to investigate the effects of the intrahippocampal co-injection of beta-amyloid protein1-40 (Abeta(1-40)) with ibotenic acid (Ibo) on learning and memory in normal and aging model rats, and to explore the mechanism underlying the effects of the co-injection. The normal and aging rats wer...
journal_title:Life sciences
pub_type: 杂志文章,收录出版
doi:10.1016/j.lfs.2004.05.039
更新日期:2005-01-28 00:00:00
abstract::Cachexia is a complex medical condition characterized by significant weight loss associated with decreased body fat and protein; the condition may present itself with or without anorexia. We have isolated and partially characterized a proteoglycan (azaftig) from the urine of cancer and AIDS patients experiencing weigh...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(99)00069-7
更新日期:1999-01-01 00:00:00
abstract::The effects of social crowding in rats on nociception and analgesic actions of mu- and kappa-opioid agonists agonist qualitatively different stimuli were examined. Crowding produced higher control thresholds for electroshock and paw pinch pressure but not for noxious heat. Naloxone did not effect shock thresholds in c...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(82)90345-9
更新日期:1982-09-20 00:00:00
abstract::Radio-binding assay, bioassay and HPLC detection were used to observe the antagonistic effects of dextrorphan on PCP's actions. Dextrorphan displayed high affinity to PCP receptor in the rabbit mesenteric blood vessels. It had weak PCP-like bioactivity, but could antagonize PCP's action dose-dependently in vitro study...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(87)90502-9
更新日期:1987-06-15 00:00:00
abstract::Methotrexate was found to stimulate asparagine synthetase activity in vivo by approximately six-fold in rat liver. The maximum effect of methotrexate on hepatic asparagine synthetase activity was observed sixteen hours after intraperitoneal injection of the drug. Cycloheximide, like methotrexate, is a protein synthesi...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(82)90524-0
更新日期:1982-03-22 00:00:00
abstract::The effects of 14-day physical exercise or iloprost treatment (0.5-2 ng/Kg/min) on endogenous nitric oxide production and neutrophil adhesion were evaluated in 20 patients with peripheral arterial occlusive disease (Fontaine Stage II). Peripheral venous blood samples and 4-h urine samples were collected before, immedi...
journal_title:Life sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0024-3205(99)00550-0
更新日期:1999-01-01 00:00:00
abstract::The effect of nimodipine on nitric oxide synthase (NOS) activities in brains in transient focal cerebral ischemia rats, in cultured mouse neurons and astroglial cells and bovine brain capillary endothelial cells (BCECs) was investigated. The administration of nimodipine (3 mg.kg(-1), p.o., twice a day, for 3 days) bef...
journal_title:Life sciences
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
abstract:AIMS:Although dexamethasone (Dex) is used widely as an anti-inflammatory and immunosuppressive drug, Dex appears to have severe side-effects, including osteoporosis. This study determined the effects of Dex on duodenal and renal expressions of the calcium-processing genes transient receptor potential cation channel, su...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2009.05.013
更新日期:2009-07-17 00:00:00
abstract::We found that platelet-activating factor (PAF) stimulated the production of prostaglandin (PG) E2 in MC3T3-E1 cells in a time- and dose-dependent manner. 1.0 microM PAF gave a maximal stimulation of PGE2 production by MC3T3-E1 cells after a 4 hr PAF-treatment. Furthermore, the PAF-induced PGE2 production was abolished...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(91)90598-6
更新日期:1991-01-01 00:00:00
abstract::Morphogenesis, the generation of tissue form, is important not only in the embryogenesis of a new individual, but also because a change in morphogenesis may be involved in the establishment of differences between individuals during evolution. Morphogenetic movements are effected in part by coordinated changes in the s...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/0024-3205(83)90844-5
更新日期:1983-10-10 00:00:00
abstract::Recent studies on the control of adrenal zona glomerulosa function and aldosterone secretion have focussed attention on the role of MSH-like peptides. In particular, at low concentrations, alpha-MSH has a specific stimulatory effect on rat adrenal glomerulosa cells. The synthesis of alpha-MSH analogues which have pote...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(84)90255-8
更新日期:1984-08-06 00:00:00
abstract::The aim of the present work was to study the effects of various durations of fasting (12, 24 and 72 hours) on brown adipose tissue (BAT) thermogenic parameters--cytrochrome-c-oxidase (COX) activity, GDP-binding activity and uncoupling protein (UCP1) content--and also on morphological features of different mitochondria...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(98)00153-2
更新日期:1998-01-01 00:00:00
abstract:AIMS:The aim of this study was to find out a mesenchymal stem cells (MSCs) source from human dental tissues of the same donor (follicle, papilla and pulp), which exhibits higher neurogenic differentiation potential in vitro. MAIN METHODS:MSCs were isolated from dental tissues (follicle, papilla and pulp) by digestion ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2016.04.026
更新日期:2016-06-01 00:00:00
abstract:AIMS:Tet1, Tet2, and interleukin-6 (IL-6) have been linked to atherosclerosis. Whether Tet3 has a relationship with atherosclerosis and IL-6 was unknown. This study aims to determine the link between Tet3 and IL-6, and the role of Tet3 in prenatal hypoxia-induced atherosclerosis in offspring rats. MAIN METHODS:Pregnan...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2019.116601
更新日期:2019-09-01 00:00:00
abstract::This study was designed to determine whether intravenous infusion of recombinant human insulin-like growth factor 1 (IGF-1) stimulates tumor growth. In order to determine the potential interaction between nutrition and IGF-1 administration the study was conducted in fasting rats and during continuous feeding by total ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(95)00005-q
更新日期:1995-01-01 00:00:00
abstract::Plasma opioid levels were determined in 9 obese non-diabetic subjects, their 8 age matched controls, and in 29 diabetic patients; 10 maintained on diet alone, 6 on an oral hypoglycemic agent (chlorpropamide) and 13 treated with insulin. Five age matched controls for the diabetic groups were also studied for comparison...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(84)90364-3
更新日期:1984-05-21 00:00:00
abstract::ACE and chymase play crucial roles in the establishment of pressure overload-induced cardiac hypertrophy. In the present study, time sequences of ACE and chymase-like activities, and their correlation with hypertrophic changes including free wall thickness and cardiac fibrosis, were elucidated in dogs with constant pr...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2004.04.006
更新日期:2004-07-16 00:00:00
abstract:AIMS:There have been recent reports that reconsolidation-based interventions attenuate drug reward memories in rodents. The insular cortex (IC) is an essential part of neural circuits that underlie cue-drug memory reconsolidation. GABAergic interneurons in the IC are a potent control on network excitability and play an...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.117655
更新日期:2020-08-01 00:00:00
abstract::Using Sokoloff's 2-deoxyglucose (2-DG) autoradiographic technique, the psychotomimetic drug, phencyclidine (PCP, "angel dust") dramatically increased metabolism in diencephalic and telencephalic brain regions known to be rich in high affinity PCP receptors. These effects were greatest in the limbic circuit described i...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(88)90116-6
更新日期:1988-01-01 00:00:00
abstract::Testosterone propionate, cortisone, or sesame oil vehicle were given to rats during the last week of pregnancy so that effects of the hormones on anogenital distance, breeding capacity and vaginal opening of the female progeny could be contrasted. Testosterone significantly increased anogenital distance and delayed va...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(92)90248-n
更新日期:1992-01-01 00:00:00
abstract:AIMS:We tested the hypothesis that respiratory quotient (RQ) determines sympathovagal balance associated with metabolism of stored and dietary energy substrates. MAIN METHODS:Six 18-20 year-old African-American males were studied after two control pretreatments of fasting and post-treatments of metabolizing high-fat a...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2009.05.006
更新日期:2009-07-17 00:00:00
abstract::A novel beta-carboline with benzodiazepine-like properties has recently been synthesized. We compared the effect of the i.v. administration of this drug, ZK 93423, with diazepam on the activity of nigral pars reticulata neurons which are known to be very sensitive to the inhibitory effect produced by GABA-mimetics and...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(87)90333-x
更新日期:1987-04-06 00:00:00
abstract::The effect of adrenergic agents on protein phosphorylation in human adipocytes was examined. Freshly isolated human fat cells were incubated with 32PO4 in order to label intracellular ATP, then treated with a variety of adrenergic and other pharmacologic agents. Treatment with the beta-adrenergic agonist isoproterenol...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(90)90597-k
更新日期:1990-01-01 00:00:00
abstract::Leukemias are a heterogenous group of diseases characterized by uncontrolled proliferation of abnormal blood cells of hematopoietic system. Evodiamine, a characteristic alkaloid extracted from Evodia fruits, has been reported to exhibit inhibitory effect on cell proliferation and migration in several types of cancer c...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2003.11.025
更新日期:2004-05-21 00:00:00
abstract:AIMS:Hepatocellular carcinoma (HCC) is a leading cause of cancer mortality worldwide. Decrease in NKG2D ligand levels and exhaustion of NK cells in HCC patients are major causes of immune escape, high recurrence, poor prognosis, and low overall survival. Enhancing the susceptibility of HCC to NK cells by upregulating N...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.117396
更新日期:2020-04-01 00:00:00
abstract::CCK-octapeptide (CCK-8) (EC50 = 0.5 nM), in the presence of Li+, increased 3H-inositol phosphate (IP) accumulation in guinea pig gastric glands prelabeled with 3H-inositol. CCK-8 desulfate, human gastrin I and pentagastrin were much less potent than CCK-8. Antagonists of CCK receptors such as proglumide, dibutyryl-c-G...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(85)90392-3
更新日期:1985-03-11 00:00:00