Abstract:
:The components of 45calcium (Ca) uptake were studied in saponin skinned rat caudal artery. The steady-state Ca content increased when the free Ca concentration was varied from 10(-8) to 10(-4) M but was reduced by azide when the free Ca concentration exceeded 3.1 microM. The azide sensitivity and low affinity for Ca were consistent with functional mitochondria. The azide-insensitive component consisted of a small bound and a larger releasable Ca fraction. After skinning in Triton X-100, approximately 4 mumol Ca/kg wet tissue remained, which represented a tightly bound but slowly exchangeable Ca pool. The Ca content was independent of the free Ca concentration and MgATP, and it was not released with A-23187 or Ca. The Ca content of the larger fraction was a higher order function of the free Ca concentration and was released with A-23187, indicating it resided within a membrane-bounded structure. Ca uptake by the releasable fraction was increased by oxalate, MgATP, phosphocreatine, temperature, phosphate, and ruthenium red and represents Ca sequestered by the sarcoplasmic reticulum (SR) with little contribution from other Ca binding or storage sites. It is described by the coefficients Umax = 96.94 mumol/kg wet tissue, K1/2 = 0.75 microM, and Hill coefficient = 1.70. The SR in this preparation regulates cytosolic Ca concentrations under physiological conditions and can accumulate Ca by MgATP-dependent and MgATP-independent process. The larger, MgATP-dependent Ca uptake is described by the coefficients Umax = 72.87 mumol/kg wet tissue, K1/2 = 0.8 microM, and Hill coefficient = 2.09 and is consistent with Ca sequestered by the Ca-transport ATPase of smooth muscle SR. The smaller, MgATP-independent uptake is described by the coefficients Umax = 24.14 mumol/kg wet tissue, K1/2 = 0.56 microM, and Hill coefficient = 1.01 and represents Ca sequestered by an unidentified mechanism or by a subpopulation of SR.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Stout MAdoi
10.1002/jcp.1041490305subject
Has Abstractpub_date
1991-12-01 00:00:00pages
383-95issue
3eissn
0021-9541issn
1097-4652journal_volume
149pub_type
杂志文章abstract::The exposure to non-thermal microwave electromagnetic field (MW-EMF) at 1.95 MHz, a frequency used in mobile communication, affects the refolding kinetics of eukaryotic proteins (Mancinelli et al., 2004). On these basis we have evaluated the in vivo effect of MW-EMF in human epidermoid cancer KB cells. We have found t...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20327
更新日期:2005-08-01 00:00:00
abstract::Neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD), are incurable diseases characterized by progressive loss of cognitive or motor function, which construct a serious threat to the life quality of aging populations and their life spans. Apelin is an ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.29001
更新日期:2020-02-01 00:00:00
abstract::Surface membrane expression and conformational activation of CD18 integrins into an open molecular configuration play critical roles in neutrophil ligand binding, membrane attachment, spreading on the endothelium, and cell migration to sites of inflammation. Previously, we observed pseudopod retraction and concomitant...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21235
更新日期:2008-02-01 00:00:00
abstract::Cells isolated from fetal rat calvaria (RC) and maintained in vitro in medium containing ascorbic acid and B-glycerophosphate form three-dimensional, mineralized nodules having the histological, immunohistological, and ultrastructural characteristics of woven bone. We have studied the effects of forskolin (FSK), a dit...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041420109
更新日期:1990-01-01 00:00:00
abstract::Previously, serum miR-188-5p is differentially expressed in breast cancer, but the diagnostic potential of circulating miR-188-5p as well as its regulatory mechanism in breast cancer remain uncertain. Herein, serum miR-188-5p was detected by real-time polymerase chain reaction in patients with breast cancer, breast fi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29367
更新日期:2020-05-01 00:00:00
abstract::Focal adhesion kinase (FAK), MAP kinases and the nuclear transcription factor Elk-1 have been reported to be implicated in the same cellular processes, however, their direct or indirect interaction and potential function(s) has not been documented. Here, we explored the association of FAK with Elk-1, the implication o...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21390
更新日期:2008-07-01 00:00:00
abstract::Osteoclasts mediate bone resorption by secretion at the site of bone attachment. This process depends on calmodulin concentrated at a specialized acid-secreting membrane. We hypothesized that increased calmodulin and bone attachment were required for acid secretion. We tested this by studying calmodulin, bone attachme...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199612)169:3<411::AID-JCP1
更新日期:1996-12-01 00:00:00
abstract::Tumor cells overcome anti-tumor responses in part through immunosuppressive mechanisms. There are several immune modulatory mechanisms. Among them, adenosine is an important factor which is generated by both cancer and immune cells in tumor microenvironment to suppress anti-tumor responses. Two cell surface expressed ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.25873
更新日期:2018-03-01 00:00:00
abstract::We have examined nucleoside transport (NT) in a cell line derived from primary day 7 murine bone marrow macrophages (S1 macrophages) in response to the macrophage growth factor, colony-stimulating factor 1 (CSF-1). Adenosine and uridine transport in quiescent S1 macrophages occurred primarily by two facilitated diffus...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041550311
更新日期:1993-06-01 00:00:00
abstract::We have previously demonstrated that insulin-like growth factor binding protein-5 (IGFBP-5) is upregulated following treatment of the mouse mammary epithelial cell line HC11 with lactogenic hormones (dexamethasone, insulin, and prolactin-DIP). In addition, we have also shown that IGFBP-5 is upregulated in mammary epit...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20587
更新日期:2006-05-01 00:00:00
abstract::In this present study, Oreochromis mossambicus tilapia were transferred to cold water at 12°C for various time intervals (1, 4, 8, 24, and 48 hr) and its innate immune response was analyzed by studying cellular and humoral parameters. In vivo, alternative complement pathway activity in blood plasma was rapidly increas...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28270
更新日期:2019-02-11 00:00:00
abstract::Hepatocellular carcinoma (HCC) is one of the most common malignancies and is a serious threat to people's health worldwide. The prognosis of advanced HCC is dim if left untreated. In the clinic, the treatment options for advanced HCC include surgery, radiotherapy, transcatheter arterial chemoembolization, and so forth...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.28048
更新日期:2019-08-01 00:00:00
abstract::Extracellular high K(+) (75 mM) increased intracellular Ca(2+) concentrations in cultured rat hippocampal astrocytes, and the Ca(2+) rise was abolished by deleting extracellular Ca(2+) or cadmium, a non-selective inhibitor of voltage-dependent calcium channels (VDCCs). In the reverse transcription-polymerase chain rea...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.22231
更新日期:2010-11-01 00:00:00
abstract::Aberrations of DNA methylation are early events in the development of tumors. In this study, we investigated the DNA methylation status of growth hormone secretagogue receptor (GHSR), a promising pan-cancer biomarker, in gastric cancer (GC). Initially, data sets from DNA methylation and gene expression studies availab...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28179
更新日期:2019-01-24 00:00:00
abstract::Nucleoside transporter proteins are specialized proteins that mediate the transport of nucleosides and nucleoside analog drugs across the plasma membrane. The human equilibrative nucleoside transporter 1 (hENT1) is a member of these proteins and mediates cellular entry of gemcitabine, cytarabine, and fludarabine. The ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.22045
更新日期:2010-05-01 00:00:00
abstract::In this study, we compared qualitative and quantitative changes in the lateral mobility of phospholipid molecules in the plasma membrane of intact cells under various conditions of specific interaction of integrins in the cell membrane with two extracellular matrix (ECM) components viz. fibronectin (FN) and laminin (L...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21339
更新日期:2008-05-01 00:00:00
abstract::Arterial smooth muscle cells undergo marked biochemical and morphological changes upon culturing. We have studied the time course of these changes in smooth muscle cells isolated from normal rabbit aortas by enzymic digestion and then maintained in Dulbecco's modified Eagle's medium with or without 10% rabbit serum. S...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041080321
更新日期:1981-09-01 00:00:00
abstract::The intracellular Ca2+ content of nontransformed Balb/c3T3 cells is two to three times higher than that of a spontaneously transformed derivative. Depriving either cell type of extracellular Mg2+ causes a 2- to 3-fold increase in their Ca2+ content over a 24-hr period. Restoring Mg2+ to the medium decreases the Ca2+ c...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041130307
更新日期:1982-12-01 00:00:00
abstract::Serine/threonine protein phosphatase (PP) 2A regulates many biological processes, however it remains unclear whether PP2A participates in cadherin-mediated cell-cell adhesion. We show here that the core enzyme of PP2A (PP2A-AC) is localized in the cell-cell adhesion sites between adjacent cells and associated with the...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20524
更新日期:2006-03-01 00:00:00
abstract::An artificial wound in a confluent monolayer of human keratinocyte HaCaT cells or mouse embryo fibroblast Swiss NIH 3T3 cells was used to analyze the effects of the nitric oxide (NO) chemical donor, S-nitroso-N-acetylpenicillamine (SNAP). SNAP exposure promoted an enhanced rate of wound closure and accelerated motilit...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25331
更新日期:2016-10-01 00:00:00
abstract::Syndecans are constitutively shed from growing epithelial cells as the part of normal cell surface turnover. However, increased serum levels of the soluble syndecan ectodomain have been reported to occur during bacterial infections. The aim of this study was to evaluate the potential of lipopolysaccharide (LPS) from t...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20287
更新日期:2005-07-01 00:00:00
abstract::Adipose tissues regulate energy metabolism and reproduction. There are three types of adipocytes (brown, white, and beige adipocytes) in mammals. White adipocytes store energy and are closely associated with obesity and other metabolic diseases. The beige and brown adipocytes have numerous mitochondria and high levels...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.25643
更新日期:2017-09-01 00:00:00
abstract::We have previously reported that the proliferation of cloned MCF-7 and T47D human mammary tumor cells can be inhibited by increasing concentrations of charcoal-dextran stripped female human serum (CDFHS). The maximal proliferation rate was restored by the addition of 3 X 10(-11) M estradiol-17 beta to the culture medi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041240305
更新日期:1985-09-01 00:00:00
abstract::The effects of the polyamines putrescine (PUT), spermidine (SPD), and spermidine (SPM) on the secretion of plasminogen activator (PA) and plasminogen activator inhibitor (PAI) were evaluated using cultured bovine aortic endothelial cells. All three polyamines enhanced PA secretion in a time- and dose-dependent manner,...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041370124
更新日期:1988-10-01 00:00:00
abstract::Several studies have shown that interleukin-4 (IL-4) down-regulates synthesis of prostaglandin E2 (PGE2). We evaluated the mechanisms for this suppression in human alveolar macrophages (HAMs). Normal HAMs were obtained from healthy nonsmoking volunteers. The cells either remained unstimulated, or were exposed to 10 mi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041650110
更新日期:1995-10-01 00:00:00
abstract::A new form of cell death has been observed. The death occurs at liquid-air interfaces when Tetrahymena cells are grown in a chemically defined medium (CDM) at low inocula. The cells die by lysis at the liquid-air interface (medium surface), which they reach due to negative gravitaxis as well as positive aerotaxis. Whe...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199610)169:1<139::AID-JCP1
更新日期:1996-10-01 00:00:00
abstract::Calreticulin is an ER calcium-storage protein, which influences gene expression and cell adhesion. In this study, we analysed the differences in adhesive properties of calreticulin under- and overexpressing fibroblasts in relation to the calmodulin- and calcium/calmodulin-dependent kinase II (CaMK II)-dependent signal...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21122
更新日期:2007-10-01 00:00:00
abstract::We recently derived a series of transformed cell lines by transfecting mouse bone marrow cells highly enriched for macrophage progenitors with a newly described human gene, R-myc, which has homology to the c-myc oncogene. In this report, we show that these lines share some features characteristic of cells of the monon...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041250307
更新日期:1985-12-01 00:00:00
abstract::alpha-Crystallins share structural and functional properties with the stress protein hsp27. These polypeptides are expressed at low constitutive levels in many tissues including brain, and alpha B-crystallin and hsp27 can accumulate in central nervous system glia in a variety of neurological conditions. We report here...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041590107
更新日期:1994-04-01 00:00:00
abstract::This study is performed to examine the impacts of microRNA-218 (miR-218) on cardiac microvascular endothelial cells (CMECs) injury induced by coronary artery disease (CAD). Reverse-transcription quantitative polymerase chain reaction (RT-qPCR) was applied for detecting miR-218 expression in serum of patients with CAD ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29214
更新日期:2020-03-01 00:00:00