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Results 201 - 250 of 2173
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Acampora K Bethany - - 2010
Restenosis remains a common problem following balloon angioplasty, and it has been speculated that changes in the mechanical environment due to endovascular interventions are correlated with shifts in smooth muscle cell (SMC) phenotype. In order to study SMC response to forces similar to those exerted during balloon angioplasty, an in ...
Chang Baojun - - 2009
Overexpression of human telomerase reverse transcriptase (hTERT) has facilitated establishing in vitro model systems for biological research. The plasmid containing hTERT gene was stably transfected into ULTR cells, a retroviral transformed human uterine leiomyomatous smooth-muscle cell line. Cells that express hTERT, termed as ULTR-hT, shared the morphological characteristics of the ...
Frid Maria G - - 2009
All forms of chronic pulmonary hypertension (PH) are characterized by structural remodeling of the pulmonary artery (PA) media, a process previously attributed solely to changes in the phenotype of resident smooth muscle cells (SMC). However, recent experimental evidence in both systemic and pulmonary circulations suggests that other cell types, including ...
Wu Li - - 2009
AIM OF THE STUDY: Danxiongfang (DF) is a new Chinese medicine formula used to treat atherosclerosis and vascular restenosis. The active ingredients in DF are danshensu (DSS), tanshinones (cryptotanshinone, CT) and ferulic acid (FA). The aim of present study was to evaluate the inhibitory effects of DF and its active ...
Hutchings G - - 2009
A strict regulation of contractility in the uterus and fallopian tube is essential for various reproductive functions. The uterus contributes, through either increased contractility or periods of relative quiescence, to: (i) expulsion of menstrual debris, (ii) sperm transport, (iii) adequate embryo placement during implantation, (iv) enlarging its capacity during pregnancy ...
Isenberg Brett C - - 2009
Mechanical compliance is emerging as an important environmental cue that can influence certain cell behaviors, such as morphology and motility. Recent in vitro studies have shown that cells preferentially migrate from less stiff to more stiff substrates; however, much of this phenomenon, termed durotaxis, remains ill-defined. To address this problem, ...
Brooks Naomi E - - 2009
Satellite cells are muscle stem cells capable of replenishing or increasing myonuclear number. It is postulated that a reduction in satellite cells may contribute to age-related sarcopenia. Studies investigating an age-related decline in satellite cells have produced equivocal results. This study compared the satellite cell content of young and aging ...
Vishnudas Vivek K - - 2009
The severely debilitating disease Congenital Muscular Dystrophy Type 1A (MDC1A) is caused by mutations in the gene encoding laminin-alpha2. Bax-mediated muscle cell death is a significant contributor to the severe neuromuscular pathology seen in the Lama2-null mouse model of MDC1A. To extend our understanding of pathogenesis due to laminin-alpha2-deficiency, we ...
Barisione Chiara - - 2009
Cell attachment is provided by cell-matrix and cell-cell bonds, and acts as a regulator of vascular smooth muscle cell (VSMC) survival, activity and homeostasis, as well as of VSMCs response to pathogenic stimuli. In this work we elicited an exclusive cell-cell contact by culturing A7r5 VSMCs on agarose-coated wells to ...
Tigerstedt Nina-Maria - - 2010
BACKGROUND: Recent studies indicate that the smooth muscle-like cells contributing to neointimal hyperplasia after vascular injury derive from circulating precursor cells. Here, we define the time course of precursor cell influx, the roles of separate vascular layers, and the relative role of migration versus proliferation to intimal hyperplasia. METHODS AND ...
Douillard-Guilloux Gaëlle - - 2009
Glycogen storage disease type II (GSDII) is an autosomal recessive disorder caused by defects in the acid alpha-glucosidase (GAA) gene leading to lysosomal glycogen accumulation, mainly in cardiac and muscle tissues. In order to facilitate biological investigation on this disease and to avoid time-consuming direct cell isolation and culture, we ...
Li X - - 2009
Transforming growth factor-beta1 (TGF-beta1) induces apoptosis in many types of cells. The cell adhesion receptor, beta1 integrin subunit, prevents apoptosis and may be involved in TGF-beta1-induced muscle cell apoptosis. In the current study, chicken primary satellite cells, myogenic precursors, were used to investigate the apoptotic effect of TGF-beta1 on muscle ...
Yamada Tsutomu - - 2009
AIM: Our aim was to determine the roles of the ubiquitin (Ub)-proteasome system (UPS) in valvular diseases by immunohistochemically identifying Ub-positive cells in aortic and mitral valves and determining if Ub+cells were associated with the severity of valvular diseases. METHODS: We evaluated surgically removed aortic and mitral valves from 60 ...
Lievens Dirk - - 2009
Disrupting the CD40-CD40L co-stimulatory pathway reduces atherosclerosis and induces a stable atherosclerotic plaque phenotype that is low in inflammation and high in fibrosis. Therefore, inhibition of the CD40-CD40L pathway is an attractive therapeutic target to reduce clinical complications of atherosclerosis. The CD40-CD40L dyad is known to interact with other co-stimulatory ...
Gherghiceanu Mihaela - - 2009
The human sub-epicardial area contains an unexplored cellular population under a layer of mesothelial cells. Transmission electron microscopy revealed the existence of interstitial Cajal-like cells (ICLCs), isolated smooth muscle cells (iSMC) and mesenchymal cells besides other well-known cells. The presence of iSMC in the sub-epicardial space is quite unique and ...
Manolakou P - - 2009
Although cellular proliferation is a key component in the progression of atherosclerosis, research so far has been focused primarily on VSMCs. In this study we attempted to evaluate overall proliferation rates in general, as well as foam cells and the endothelial cells lining newly formed plaque microvessels in particular. For ...
Ringseis Robert - - 2009
Conjugated linoleic acids (CLA) are biologically highly active lipid compounds that inhibit the development of atherosclerotic plaques in experimental animals. The underlying mechanisms of action, however, are only poorly understood. Since cell-culture experiments are appropriate to provide a detailed view into the mechanisms of action of a compound, the present ...
Negroni Elisa - - 2009
In recent years, numerous reports have identified in mouse different sources of myogenic cells distinct from satellite cells that exhibited a variable myogenic potential in vivo. Myogenic stem cells have also been described in humans, although their regenerative potential has rarely been quantified. In this study, we have investigated the ...
Chaouch Soraya - - 2009
Abstract Numerous strategies are under development for the correction of deleterious effects of mutations in muscular dystrophies, and these strategies must be validated in compelling models. Cellular models seem straightforward to set up; however, the proliferative capacity of muscle cells isolated from dystrophic patients is limited, and in addition it ...
Iino Satoshi - - 2009
In the gastrointestinal musculature, interstitial cells of Cajal (ICC) distribute and regulate the gastrointestinal motility. Another type of mesenchymal cell, known as the fibroblast-like cell (FLC), has also been reported to be juxtaposed to the ICC. In this study, we examined the immunohistochemical properties of FLC in the murine gastrointestinal ...
Fukutani Tamotsu - - 2009
Nitric oxide (NO) has various roles in the skeletal musculature in both normal and pathological conditions. NO primarily activates soluble guanylate cyclase (sGC) and mediates subsequent intracellular signaling in target cells. We sought to identify the target cells of NO in the rat skeletal musculature, using subtypes of sGCalpha1 and ...
Mei Feng - - 2009
Although it is well known that the reduction of interstitial cells of Cajal (ICCs) is associated with several gastrointestinal motility disorders in clinic, it is unknown whether the mature ICCs still have an active plasticity in adult mammals. This study focused on the issues of the reduction of ICCs during ...
Weng Shao-Xiang - - 2009
This study is to determine the effect of the natural product parthenolide, a sesquiterpene lactone isolated from extracts of the herb Tanacetum parthenium, on the proliferation of vascular smooth muscle cells (VSMCs). Rat aortic VSMCs were isolated and cultured in vitro, and treated with different concentrations of parthenolide (10, 20 ...
Jankowski Vera - - 2009
The purinergic system is composed of mononucleosides, mononucleoside polyphosphates and dinucleoside polyphosphates as agonists, as well as the respective purinergic receptors. Interest in the role of the purinergic system in cardiovascular physiology and pathophysiology is on the rise. This review focuses on the overall impact of dinucleoside polyphosphates in the ...
Okabe Hirohisa - - 2009
Although cumulative evidence supports the fact that stromal myofibroblasts promote tumor progression, the influence of myofibroblasts on intrahepatic cholangiocarcinoma (ICC) is unclear. We hypothesized that hepatic stellate (HS) cells can differentiate into myofibroblasts in ICC stroma and that they promote cancer progression. This study aims to: (1) assess the influence ...
Ouellette S E - - 2009
Skeletal muscle growth is accomplished chiefly through the actions of satellite cells, a heterogeneous population that includes the adult muscle stem cell. Located adjacent to a mature muscle fiber, satellite cells typically reside in a quiescent state. Little information exists detailing satellite cell regulation of reversible G(0). One member of ...
Liu H G - - 2009
This study aimed to investigate the expression and function of ryanodine receptors (RyRs) in rabbit penile corpus cavernosum smooth muscle (CCSM) cells. New Zealand white rabbit CCSM cells were cultured by primary tissue culture and identified by immunofluorescence technique. mRNA of three RyRs subunits in cultured CCSM cells was detected ...
Nishijima Itomi - - 2009
CONCLUSION: These results suggest that mast cells (MCs) play a role in promoting nasal polyp (NP) formation and progression with alpha-smooth muscle actin (alpha-SMA)-positive cells. OBJECTIVES: We studied the quantification and the localization of MCs and myofibroblasts in NPs. PATIENTS AND METHODS: We examined NPs from 12 patients with chronic ...
Laudadio Rachel E - - 2009
Previous studies have shown developmental differences in smooth muscle tone of the airways. Differences in airway mechanics may be based upon cellular differences between animals of different ages. We developed a method [Driska et al. J Appl Physiol 86(1): 427-35, 1999] for isolating ovine tracheal smooth muscle cells and for ...
Chai Hong - - 2009
BACKGROUND: Clinical data have shown that an increased level of serum soluble CD40 ligand (sCD40L) is associated with atherosclerogenesis. We hypothesize that sCD40L induces proliferation and migration of vascular smooth muscle cells (VSMCs) through activation of matrix metalloproteinases (MMPs). METHODS: Human VSMCs were treated with sCD40L (1 or 5 microg/mL). ...
Kang Hyo Jin - - 2009
OBJECTIVES: To evaluate the location of interstitial cells of Cajal-like cells and the ureteral aspect using histopathologic studies of obstructive and refluxing megaureters to reveal the different pathogenesis of megaureters in the human urinary tract. The underlying pathophysiology of obstructive megaureter and refluxing megaureter is poorly understood. METHODS: The data ...
Mu Hong - - 2009
Increased plasma levels of lactosylceramide (LacCer) have been associated with cardiovascular disease. However, it is largely unknown whether LacCer directly contributes to dysfunction of smooth muscle cells (SMCs), a key event in vascular lesion formation. In the present study, we determined the effects and potential mechanisms of LacCer on cell ...
Lesma Elena - - 2009
Tuberous sclerosis complex (TSC) is an autosomal-dominant disease that is caused by mutations in either the TSC1 or TSC2 gene. Smooth muscle-like cells (ASMs) were isolated from an angiomyolipoma of a patient with TSC. These cells lacked tuberin, were labeled by both HMB45 and CD44v6 antibodies, and had constitutive S6 ...
Schreiber Alexander M - - 2009
Amphibian metamorphosis is accompanied by extensive intestinal remodeling. This process, mediated by thyroid hormone (TH) and its nuclear receptors, affects every cell type. Gut remodeling in Xenopus laevis involves epithelial and mesenchymal proliferation, smooth muscle thickening, neuronal aggregation, formation of intestinal folds, and shortening of its length by 75%. Transgenic ...
Kenagy Richard D - - 2009
About a quarter of peripheral vein grafts fail due in part to intimal hyperplasia. The proliferative capacity and response to growth inhibitors of medial smooth muscle cells and adventitial fibroblasts in vitro were studied to test the hypothesis that intrinsic differences in cells of vein grafts are associated with graft ...
Han Jee Seung - - 2009
The TAT-high mobility group box-1 A box peptide (TAT-HMGB1A) has been reported previously to be able to deliver DNA into cells without cytotoxicity. In this study, an artery wall smooth muscle cell-targeting carrier was developed using TAT-HMGB1A combined with an artery wall binding peptide (ABP). For the production of ABP ...
Nincheri P - - 2009
Sphingosine 1-phosphate (S1P) is a bioactive sphingolipid which regulates multiple biological parameters in a number of cell types, including stem cells. Here we report, for the first time, that S1P dose-dependently stimulates differentiation of adipose tissue-derived mesenchymal stem cells (ASMC) towards smooth muscle cells. Indeed, S1P not only induced the ...
Kurth Patricia - - 2009
Platelet-derived growth factors (PDGF) and their receptors control cell proliferation, survival, and migration. To test the influence of an oncogenic mutation to embryonic development, a transgenic mouse line expressing PDGFRalpha (D842V) was established and analyzed. Most of the embryos die on embryonic day 12.5 due to massive hemorrhages in the ...
Thakar Rahul G - - 2009
Vascular smooth muscle cells (SMCs) play an important role in vascular remodeling. Heterogeneity and phenotypic changes in SMCs are usually accompanied by a morphological difference, i.e., elongated/spindle-like versus spread-out or epithelioid/rhomboid cell shapes. However, it is not known whether the cell shape directly regulates SMC proliferation, and what the underlying ...
Pang Xiao X Department of Cardiology, People's Hospital, Peking University, Beijing, China. - - 2009
Catecholamine-induced vascular smooth muscle cell (VSMC) proliferation is one of the major events in the pathogenesis of atherosclerosis and vascular remodeling. The calcineurin-NFAT pathway plays a role in regulating growth and differentiation in various cell types. We investigated whether the calcineurin-NFAT pathway was involved in the regulation of phenylephrine-induced VSMC ...
Nigro Julie - - 2009
The importance of the pathological changes in proteoglycans has driven the need to study and design novel chemical tools to control proteoglycan synthesis. Accordingly, we tested the fluorinated analogue of glucosamine (4-fluoro-N-acetyl-glucosamine (4-F-GlcNAc)) on the synthesis of heparan sulfate (HS) and chondroitin sulfate (CS) by murine airway smooth muscle (ASM) ...
Chuaysri Chanisa - - 2009
Cancer-associated fibroblasts have been proposed to play a role in promoting carcinogenesis and tumor progression. To our knowledge, no direct evidence concerning fibroblasts in the genesis of cholangiocarcinoma (CCA) has previously been presented. This study aims to assess the value of activated fibroblasts with high alpha-smooth muscle actin (alpha-SMA) expression ...
Yoshimura Ryoichi - - 2009
An acetylcholine (ACh) agonist, carbachol (Cch), causes hepatocytes to proliferate in the presence of hepatic nonparenchymal cells (HNPCs). To identify the HNPCs and ACh receptor subtypes involved in carbachol-induced hepatocyte proliferation (CIHP), we examined two types of vascular cells as candidates for HNPCs mediating CIHP in cocultures of hepatocytes using ...
Day Kenneth K Department of Biological Structure, University of Washington School of Medicine, Seattle, Washington 98195, - - 2009
Satellite cells are skeletal muscle stem cells that provide myogenic progeny for myofiber growth and repair. Temporal expression of muscle regulatory factors (MRFs) and the paired box transcription factor Pax7 defines characteristic phases of proliferation (Pax7(+)/MyoD(+)/myogenin(-)) and differentiation (Pax7(-)/MyoD(+)/myogenin(+)) during myogenesis of satellite cells. Here, using bromodeoxyuridine (BrdU) labeling and ...
Grol Simone - - 2009
OBJECTIVE: To examine the expression of ubiquitin hydrolase (UH), an enzyme which is part of the ubiquitin-proteasome system involved in the regulation of cell growth and differentiation, to gain an insight into the cell types and processes underlying the tissue remodelling that occur after bladder neck damage. MATERIALS AND METHODS: ...
Wu Jun - - 2009
Considerable evidence indicates a key role for primary cilia of mammalian cells in mechanochemical sensing. Dysfunctions of primary cilia have been linked to the pathogenesis of several human diseases. However, cilia-related research has been limited to a few cell and tissue types; to our knowledge, no literature exists on primary ...
Lee Se-Jung - - 2009
Cellular and molecular events in vascular smooth muscle cells (VSMC) from Wistar-Kyoto rats (WKY) and spontaneously hypertensive rats (SHR) were investigated. SHR-derived VSMC showed increased proliferative capacity and MAP kinase levels in comparison with WKY-derived VSMC. Flow cytometry analysis revealed that progression from G1 to S phase was faster in ...
McLin Valérie A - - 2009
The gastrointestinal (GI) tract forms from the endoderm (which gives rise to the epithelium) and the mesoderm (which develops into the smooth muscle layer, the mesenchyme, and numerous other cell types). Much of what is known of GI development has been learned from studies of the endoderm and its derivatives, ...
McCrann Donald J DJ Department of Biochemistry and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, - - 2009
Our recent reports indicated that polyploidization of aortic vascular smooth muscle cells (VSMC) serves as a biomarker for aging, and that the polyploid state is linked to a higher incidence of senescence in vivo. Here, we found that NADPH oxidase 4 (Nox4) expression is augmented in VSMC from aortas of ...
Waschbisch Anne - - 2009
Trogocytosis is a cell-contact dependent intercellular transfer of membrane fragments and associated molecules. We studied trogocytosis in the interaction of T cells with human skeletal muscle cells modeling muscle-immune cell interactions under pathophysiological conditions i.e. myositis. Human myoblasts donate membrane fragments to T cells. Acquisition of muscle-derived membrane molecules depended ...
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