Abstract:
:Ischemia is a situation occurring in several diseases including myocardial infarction and organ transplantation in which oxygenated blood supply is impaired. Ischemia leads to many cellular and tissue modifications, the most important one being cell death. Several explanations have been proposed to account for these modifications and cell death; among them is calcium overload. However, the influence of calcium concentration on the alteration of endothelial cell functions or viability during ischemia are still unknown. We developed here an in vitro model where human endothelial cell monolayers were submitted to hypoxia with or without reoxygenation and variation in calcium concentration was followed using a specific intracellular probe Fura 2. We observed a significant increase of [Ca2+]i during 2 h hypoxia reaching values similar to those observed during agonist stimulation of endothelial cells but far lower than values toxic for the cells. This increase was constant during the hypoxic incubation and was due mainly to an influx of extracellular calcium. Viability was also followed during hypoxia and using calcium channel blockers, we could show that there was no correlation between viability and the rise in calcium concentration. During the reoxygenation period, [Ca2+]i decreased to reach the normal value of resting cells after 45 min, suggesting that cells were still able to recover their calcium homeostasis. The use of a ketone body (beta-hydroxybutyrate) indicated that an energy deficiency was responsible for the hypoxia-induced increase in [Ca2+]i. We actually observed a 43% decrease in ATP concentration after 2 h hypoxia. This decrease was already significant after 30 min which thus precedes the changes in [Ca2+]i. These results show that during hypoxia, energy deficiency led to an increase in [Ca2+]i which is, however, too low to account for the loss of viability but which is within the range of concentrations observed during stimulation of endothelial cells. We propose that such increased intracellular calcium concentrations could play a role in the synthesis of mediators leading to the development of local inflammation.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Arnould T,Michiels C,Alexandre I,Remacle Jdoi
10.1002/jcp.1041520127keywords:
subject
Has Abstractpub_date
1992-07-01 00:00:00pages
215-21issue
1eissn
0021-9541issn
1097-4652journal_volume
152pub_type
杂志文章abstract::The skeleton has recently emerged as a critical insulin target tissue that regulates whole body glucose metabolism and male reproductive function. While our understanding of these new regulatory axes remains in its infancy, the bone-specific protein, osteocalcin, has been shown to be centrally involved. Undercarboxyla...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.26163
更新日期:2018-05-01 00:00:00
abstract::Wnt5a, a member of the noncanonical Wnt proteins, is known to play important roles in the development of various organs and in postnatal cell functions. However, little is known about the effects of Wnt5a on human periodontal ligament (PDL) cells. In this study, we examined the localization and potential function of W...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24950
更新日期:2015-11-01 00:00:00
abstract::We have measured endogenous and induced rates of 70-kD, 89-kD, and 110-kD heat shock proteins in highly pure G1-, S-, or G2-M phase fractions of Chinese hamster fibroblasts (CHO) separated by fluorescence-activated cell sorting (FACS). Relative rates of synthesis of all three polypeptides as measured by two-dimensiona...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041260220
更新日期:1986-02-01 00:00:00
abstract::A rat pheochromocytoma cell line (PC12 cells) was used as a model to investigate the role of calmodulin and its multiple mRNAs in NGF-induced neuronal differentiation. The effect of NGF on the degree of differentiation was assayed using a simple differentiation scoring system. Significant increases in the differentiat...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041490309
更新日期:1991-12-01 00:00:00
abstract::Tumor cells secrete extracellular vesicles (EVs) for intercellular communication. EVs by transporting different proteins, nucleic acids, and lipids contribute to affect target cell function and fate. EVs which originate directly from multivesicular bodies so-called exosomes have dramatically fascinated the attention ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.29668
更新日期:2020-10-01 00:00:00
abstract::The biological actions of retinoids are mediated by nuclear retinoic acid receptors (RARs) and retinoid X receptors (RXRs). We have recently reported that decreased expression of RARα and RXRα has an important role in high glucose (HG)-induced cardiomyocyte apoptosis. However, the regulatory mechanisms of HG effects o...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.23005
更新日期:2012-06-01 00:00:00
abstract::Curcumin is known to be a potent wound healer. Despite this, studies on curcumin using certain model systems have shown it to be anti-angiogenic. Results of the present investigations suggest that curcumin causes opposing effects on angiogenesis in serum stimulated and unstimulated conditions. The evidence in support ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21307
更新日期:2008-04-01 00:00:00
abstract::LL-37, the only known human cathelicidin which is encoded by the human antimicrobial peptide (CAMP) gene, plays a critical role in protection against bacterial infection. We previously demonstrated that cathelicidin is induced by 1,25-dihydroxyvitamin D3 (1,25(OH) 2 D 3 ) in human airway epithelial cells with a result...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27702
更新日期:2019-07-01 00:00:00
abstract::Previous study suggested that the receptor component protein (RCP), one of the components of calcitonin gene-related peptide (CGRP) receptor, plays a multiple role in the cellular signal transduction. The study was designed to investigate whether or not the RCP involved in the regulation of caveolin-1/extracellular si...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.26582
更新日期:2018-10-01 00:00:00
abstract::It is presently unclear what role elevations in intracellular calcium concentration ([Ca2+]i) play in the control of monokine secretion, or whether such alterations underlie the ability of physiologic stimuli to induce production of these important signalling molecules. To address these issues, we have performed exper...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199811)177:2<232::AID-JCP5
更新日期:1998-11-01 00:00:00
abstract::During tissue repair and development, matrix accumulation is modulated as multiple signals impinge on target cells. We have investigated the effects of combinations of the mitogenic cytokines, basic fibroblast growth factor (bFGF), transforming growth factor alpha (TGF-alpha), and insulin-like growth factor-1 (IGF-1) ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041550119
更新日期:1993-04-01 00:00:00
abstract::Human peripheral blood monocytes and neutrophils secrete TGF-beta. Activation of monocytes with LPS stimulates the secretion of TGF-beta; however, the production of TGF-beta by neutrophils was not altered by treatment with LPS. The secreted TGF-beta appears to be in a fully active form since acid treatment of the cond...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041400226
更新日期:1989-08-01 00:00:00
abstract::HIV transcription is induced by the HIV-1 Tat protein, in concert with cellular co-factors including CDK9, CDK2, NF-kappaB, and others. The cells of most of the body's organs are exposed to approximately 3-6% oxygen, but most in vitro studies of HIV replication are conducted at 21% oxygen. We hypothesized that activit...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21882
更新日期:2009-11-01 00:00:00
abstract::Osteoclasts and macrophages share progenitors that must receive decisive lineage signals driving them into their respective differentiation routes. Macrophage colony stimulation factor M-CSF is a common factor; bone is likely the stimulus for osteoclast differentiation. To elucidate the effect of both, shared mouse bo...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24702
更新日期:2015-01-01 00:00:00
abstract::Transforming growth factor beta (TGF beta) treatment of rat osteoblast-rich calvarial cells or of the clonal osteogenic sarcoma cells, UMR 106-01, resulted in dose-dependent inhibition of plasminogen activator (PA) activity, and increased production of 3.2 kb mRNA and protein for PA inhibitor -1 (PAI-1). Although tiss...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041490106
更新日期:1991-10-01 00:00:00
abstract::Primary porcine bronchial epithelial cells (PBECs) are an ideal model to study the molecular and pathogenic mechanisms of various porcine respiratory pathogens. However, the short lifespan of primary PBECs greatly limit their application. Here, we isolated and cultured primary PBECs and established immortalized PBECs ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.26942
更新日期:2018-12-01 00:00:00
abstract::Lactoferrin, a single chain cationic glycoprotein, present in the secondary granules of neutrophils, acts as a negative feedback regulator of myelopoiesis. Specific receptors for lactoferrin were detected on the surface of different hematopoietic cell types. The influence of lactoferrin on cell growth in culture has b...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041530306
更新日期:1992-12-01 00:00:00
abstract::Biochemical events elicited by interleukin 1 (IL-1) were studied in Swiss 3T3 fibroblasts. One hour after its addition, IL-1 stimulated synthesis of prostaglandin E2 (PGE2), which continued to accumulate for 4 days. IL-1 also stimulated cAMP accumulation. Indomethacin blocked cAMP accumulation in response to IL-1, sug...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041390106
更新日期:1989-04-01 00:00:00
abstract::Hemodynamic forces influence many endothelial cell functions. The coupling between hemodynamic forces and cell function could be mediated by mechano-sensitive ion channels present in the plasma membrane of endothelial cells. Because one of these channels is permeable to Ca2+, we tested whether hemodynamic forces influ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041510107
更新日期:1992-04-01 00:00:00
abstract::Intimal hyperplasia is an important cause of stenosis or occlusion after vascular injury. Circular RNAs (circRNAs) are known to be related to various cardiovascular diseases. However, the expression profile of circRNAs in the neointima has not been reported in detail. In this study, we established a rat common carotid...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28164
更新日期:2019-01-17 00:00:00
abstract::The presence of inflammatory cells and their products in the tumor microenvironment plays a crucial role in the pathogenesis of a tumor. Releasing the cytokines from a host in response to infection and inflammation can inhibit tumor growth and progression. However, tumor cells can also respond to the host cytokines wi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.28252
更新日期:2019-02-18 00:00:00
abstract::This study primarily explored how miR-145, mitogen-activated protein kinase (MAPK) signaling and a downstream transcription factor (i.e., SOX9) mediated development of hypospadias. The hypospadias tissues and preputial tissues were isolated from pediatric inpatients postoperatively. Simultaneously, the rat models of h...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27708
更新日期:2019-07-01 00:00:00
abstract::Tenascin-C, a six-armed extracellular matrix glycoprotein, is expressed in a temporally and spatially restricted pattern during carcinogenesis and invasion or metastasis of carcinoma cells in association with stromal-epithelial interactions. The human epidermoid carcinoma-derived cell lines, A431 and HEp-2, which do n...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041650104
更新日期:1995-10-01 00:00:00
abstract::A quantitative assay for intercellular adhesion, which is a modification of the collecting aggregate assay (Roth et al., '71) is described. The use of mechanically dissociated single cells labeled with 3H-leucine, and of a gyratory shaker increased considerably the efficiency of cell collection. With chick embryo neur...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040900104
更新日期:1977-01-01 00:00:00
abstract::Lymphocytes depleted of ATP by incubation in iodoacetate (IAA) and nitrogen (N2) lost K and gained Na. Isotopic Na exchange showed a fast fraction and a slower exponential fraction, the latter conventionally assumed to reflect surface membrane properties. The gain of cell Na was not accounted for by a decrease in 22Na...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041100312
更新日期:1982-03-01 00:00:00
abstract::In fertilized echinoderm eggs, the male and female pronuclei fuse to form the diploid nucleus even in the presence of aphidicolin, a specific inhibitor of eukaryotic DNA polymerase-alpha. The subsequent first cleavage is independent of chromosomes but dependent on spindle and amphiaster. The fate of DNA originally exi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041240103
更新日期:1985-07-01 00:00:00
abstract::Visualizing protein dynamics is the key to a quantitative understanding of molecular mechanisms in biological systems. Recent developments in fluorescent microscopy techniques allow for novel experimental approaches to study stochastic localization, distribution, and movement of fluorescently labeled molecules in high...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25451
更新日期:2017-01-01 00:00:00
abstract::Guanine nucleotides and pertussis toxin were used to test for the involvement of a guanine nucleotide binding protein in the vasopressin V1 receptor-mediated stimulation of protein kinase C activity in Swiss 3T3 cells. Addition of vasopressin in the presence of [gamma-32P]ATP and digitonin caused a marked and rapid in...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041410204
更新日期:1989-11-01 00:00:00
abstract::Spinal cord injury (SCI) is a public health problem in the world. The SCI usually triggers an excessive inflammatory response that brings about a secondary tissue wreck leading to further cellular and organ dysfunction. Hence, there is great potential of reducing inflammation for therapeutic strategies of SCI. In this...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28124
更新日期:2019-08-01 00:00:00
abstract::Heparan sulfate from the surface of a variety of mouse cells at different cell densities was examined by ion-exchange chromatography. The results of this analysis show that: (1) The heparan sulfate from new isolates of Swiss 3T3 cells transformed by SV40 virus (a DNA tumor virus) elutes from DEAE-cellulose at a lower ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040900108
更新日期:1977-01-01 00:00:00