Journal ArticleOncoimmunology · 2017
Expression of human epidermal growth factor family member 3 (HER3), a critical heterodimerization partner with EGFR and HER2, promotes more aggressive biology in breast and other epithelial malignancies. As such, inhibiting HER3 could have broad applicabil ...
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Journal ArticleJ Immunother · May 2015
Most dendritic cell (DC)-based vaccines have loaded the DC with defined antigens, but loading with autologos tumor-derived antigens would generate DCs that activate personalized tumor-specific T-cell responses. We hypothesized that DC matured with an optim ...
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Journal ArticleSurgery · September 2012
BACKGROUND: The microenvironments of neoplasms influence both mesenchymal stem cell differentiation into cancer-associated fibroblasts (CAF) and tumor cell line differentiation to mesenchymal phenotypes via epithelial-to-mesenchymal transition (EMT). Using ...
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Journal ArticleAnn Surg · February 2012
OBJECTIVE: To determine the efficacy of osteopontin (OPN) targeting in hepatocellular cancer (HCC). SUMMARY/BACKGROUND: OPN is associated with HCC growth and metastasis and represents a unique therapeutic target. METHODS: OPN and epithelial-mesenchymal tra ...
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Journal ArticleVaccine · November 21, 2011
While many tumor associated antigens (TAAs) have been identified in human cancers, efforts to develop efficient TAA "cancer vaccines" using classical vaccine approaches have been largely ineffective. Recently, a process to specifically target proteins to e ...
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Journal ArticleSurgery · August 2011
BACKGROUND: We report pharmacokinetic (PK) data, evaluation of modifications for increased stability, evaluation for cellular uptake, and mediation of regression of breast cancer for the aptamer OPN-R3. METHODS: The OPN-R3 aptamer was assessed for PK data ...
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Journal ArticleCarcinogenesis · April 2011
The interaction between cancer and its local microenvironment can determine properties of growth and metastasis. A critical component of the tumor microenvironment in this context is the cancer-associated fibroblast (CAF), which can promote tumor growth, a ...
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Journal ArticleJ Biol Chem · November 26, 2010
The molecular pathways regulating signal transducer and activator of transcription 1 (STAT1) levels in states of inflammation are incompletely understood. The suppressor of cytokine signaling, protein inhibitor of STAT, and SHP-1/2 tyrosine phosphatases ul ...
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Journal ArticleSurgery · August 2010
BACKGROUND: Osteopontin (OPN) is a variably expressed, secreted glycophosphoprotein that mediates the growth and metastases of hepatocellular cancer (HCC). MicroRNAs (miRNAs) may be responsible for variant OPN expression, interrupting translation by bindin ...
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Journal ArticleBMC Res Notes · July 1, 2009
BACKGROUND: Osteopontin (OPN) is a secreted phosphoprotein which functions as a cell attachment protein and cytokine that signals through two cell adhesion molecules, alphavbeta3-integrin and CD44, to regulate cancer growth and metastasis. However, the sig ...
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Journal ArticleExp Cell Res · January 15, 2009
Cancer progression depends on an accumulation of metastasis-supporting physiological changes which are regulated by cell signaling molecules. One such molecule, osteopontin (OPN), is a secreted phosphoprotein which mediates increased cellular migratory and ...
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Journal ArticleMol Ther · January 2009
Osteopontin (OPN) is a secreted phosphoprotein which mediates tumorigenesis, local growth, and metastasis in a variety of cancers. It is a potential therapeutic target for the regulation of cancer metastasis. RNA aptamer technology targeting OPN may repres ...
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Journal ArticleJ Biol Chem · September 12, 2008
The local structural properties and spatial conformations of chromosomes are intimately associated with gene expression. The spatial associations of critical genomic elements in inducible nitric-oxide synthase (iNOS) transcription have not been previously ...
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Journal ArticleSurgery · August 2008
BACKGROUND: Osteopontin (OPN) represses inducible nitric oxide synthase (iNOS) expression by increasing ubiquitin (Ub)-proteasome degradation of Stat1, a critical transcription factor for iNOS expression. We investigated the in vivo relevance of our findin ...
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Journal ArticleSurgery · June 2008
BACKGROUND: Osteopontin (OPN) is a potential therapeutic target in hepatocellular carcinoma (HCC), because it is a critical mediator of metastatic function. The molecular mechanisms that determine expression of OPN in HCC, however, are unknown. In this stu ...
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Journal ArticleNeoplasia · September 2007
BACKGROUND: Osteopontin (OPN) is a secreted glycoprotein that mediates cell-matrix interactions and cellular signaling by binding with integrin (primarily alpha(v)beta(3)) and CD44 receptors. OPN regulates cell adhesion, chemotaxis, macrophage-directed IL- ...
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Journal ArticleSurgery · August 2007
BACKGROUND: Osteopontin (OPN) mediates cancer metastasis. Mechanisms regulating OPN expression in human colorectal cancer are unknown. Using SW480 colon adenocarcinoma cells, we hypothesized that transcription determines OPN expression. METHODS: SW480 cons ...
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Journal ArticleSurgery · August 2007
BACKGROUND: We hypothesized that acetylation of the Stat1 regulates interferon-gamma (IFN-gamma) mediated macrophage expression of inducible nitric oxide synthase (iNOS). METHODS: RAW 264.7 iNOS expression was induced with IFN-gamma. Deacetylase inhibitors ...
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Journal ArticleCancer Res · May 1, 2007
Osteopontin is a glycoprotein that has been linked to metastatic function in breast, lung, and prostate cancers. However, the mechanism by which osteopontin acts to induce metastatic properties is largely unknown. One intriguing feature of osteopontin is t ...
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Journal ArticleJ Biochem · May 2007
In the presence of oxidative stress, the hepatocellular inflammatory-redox (IR) state upregulates inducible nitric oxide synthase (iNOS) expression as an anti-oxidant function. In IL-1beta and peroxide treated hepatocytes, we have identified hepatocyte nuc ...
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Journal ArticleJ Immunol · February 1, 2007
In systemic inflammation induced by endotoxin (LPS), the macrophage produces the majority of the circulating NO metabolites. However, while the molecular pathways which up-regulate iNOS expression have been extensively studied in the macrophage, little is ...
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Journal ArticleSurgery · August 2006
BACKGROUND: Interactions between tumor cells and their host environment can play a major role in regulating survival programs required for tumor progression. Osteopontin (OPN) is a glycophosphoprotein overexpressed by tumors, and is a key molecule for tumo ...
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Journal ArticleJ Biol Chem · July 14, 2006
Osteopontin (OPN) is a sialic acid-rich phosphoprotein secreted by a wide variety of cancers. We have shown previously that OPN is necessary for mediating hepatic metastasis in CT26 colorectal cancer cells. Although a variety of stimuli can induce OPN, the ...
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Journal ArticleCarcinogenesis · June 2006
Metastasis-supporting physiological alterations are regulated by cell signaling molecules, which target signal transduction pathways and gene expression. Osteopontin (OPN) overexpression may represent a key molecular event in cancer metastasis. In this stu ...
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Journal ArticleBiochem J · March 1, 2006
In IL-1beta (interleukin 1beta)-stimulated rat hepatocytes exposed to superoxide, we have previously identified an IRX (inflammatory redox)-sensitive DR1 [direct repeat of RG(G/T)TCA with one base spacing] cis-acting activator element (nt -1327 to -1315) i ...
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Journal ArticleSurgery · July 2005
BACKGROUND: Redox-mediated upregulation of transcription of hepatocyte inducible nitric oxide synthase (iNOS) requires hepatocyte nuclear factor IV-alpha (HNF-4alpha). In this setting, PC4 is often isolated with HNF-4alpha in DNA-protein pull-down studies. ...
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Journal ArticleJ Immunol · July 1, 2005
Osteopontin (OPN) is a highly hydrophilic and negatively charged sialoprotein of approximately 298 amino acids with diverse regulatory functions, including cell adhesion and migration, tumor growth and metastasis, atherosclerosis, aortic valve calcificatio ...
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Journal ArticleDig Dis Sci · July 2005
Our objective was to delineate the role of nitric oxide (NO) in osteopontin (OPN)-associated metastatic properties in HepG2 cells. OPN is the major phosphoprotein secreted by malignant cells in patients with advanced metastatic cancer, is frequently overex ...
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Journal ArticleCarcinogenesis · April 2005
Hepatic metastasis is a primary cause for failure of locoregional therapy in colorectal cancer. Increased expression of osteopontin (OPN), a ligand for alpha(v)beta3 integrin and CD44 receptors, is associated with metastasis in several types of cancer. How ...
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Journal ArticleNitric Oxide · March 2005
Nitric oxide (NO) is an omnipresent regulator of cell function in a variety of physiologic and pathophysiologic states. In part, NO exerts its actions by S-nitrosylation of target thiols, primarily in cysteine residues. Delineating the functional correlate ...
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Journal ArticleJ Biol Chem · November 5, 2004
Cancer progression depends on an accumulation of metastasis-supporting cell signaling molecules, which target signal transduction pathways and, ultimately, gene expression. One such molecule, osteopontin (OPN), represents a key molecular signaling event in ...
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Journal ArticleBiochem Biophys Res Commun · September 3, 2004
Osteopontin (OPN) is a highly hydrophilic and negatively charged sialoprotein of approximately 298 amino acids which is an important mediator of tumor metastatic behavior. We have previously demonstrated that endotoxin-dependent OPN gene transcription is r ...
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Journal ArticleImmunol Lett · August 15, 2004
BACKGROUND: Osteopontin (OPN) is an inducible cell attachment protein which binds alphavbeta3-integrin and CD44 receptors to promote tumor metastasis. We hypothesized that OPN alters expression of its CD44 receptor to promote neoplastic cell migration. MET ...
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Journal ArticleJ Biol Chem · March 19, 2004
Osteopontin (OPN) is a highly hydrophilic and negatively charged sialoprotein of approximately 298 amino acids that contains a Gly-Arg-Gly-Asp-Ser sequence. It is a secreted protein with diverse regulatory functions, including cell adhesion and migration, ...
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Journal ArticleBiochem J · February 1, 2004
Hepatocyte expression of iNOS (inducible nitric oxide synthase) and synthesis of nitric oxide convey protective antioxidant functions in models of sepsis, shock and reperfusion. However, the underlying redox-sensitive mechanisms that regulate hepatocyte ex ...
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Journal ArticleCarcinogenesis · December 2003
The interaction of osteopontin (OPN) with CD44 and alphavbeta3-integrin has been implicated in numerous signal transduction pathways that may promote cancer metastasis. CD44v6 is a splice variant of CD44 which has been identified as a marker of cancer prog ...
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Journal ArticleBiochem Biophys Res Commun · September 12, 2003
Osteopontin (OPN) functions as both a cell attachment protein and a cytokine that signals through two CAM molecules: alpha(v)beta(3)-integrin and CD44. OPN initiates a number of signal transduction pathways that control cell survival, proliferation, and mi ...
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Journal ArticleAm J Physiol Cell Physiol · April 2003
Nitric oxide (NO), endogenously synthesized by inducible NO synthase (iNOS), serves antioxidant and antiapoptotic functions in settings characterized by oxidative stress and proinflammatory cytokines such as sepsis and shock. However, the redox-sensitive m ...
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Journal ArticleMol Cancer Res · November 2002
CDK5 and its activator, p35, are expressed in mouse corneal epithelium and can be coimmunoprecipited from corneal epithelial cell lysates. Immunostaining shows CDK5 and p35 in all layers of the corneal epithelium, especially along the basal side of the bas ...
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Journal ArticleJ Immunol · May 1, 2002
In endotoxin (LPS)-mediated states of sepsis, inducible NO synthase expression and NO production are associated with molecular regulatory functions that determine the host inflammatory response. NO inhibits cellular respiration and mitochondrial electron t ...
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Journal ArticleJ Biol Chem · February 15, 2002
The underlying redox-sensitive mechanisms that regulate hepatocyte expression of inducible nitric-oxide synthase (iNOS) and its antioxidant functions are largely unknown. We have demonstrated previously that oxidative stress induced by benzenetriol-mediate ...
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Journal ArticleImmunol Lett · January 1, 2002
The production of nitric oxide (NO) in response to endotoxin (LPS)-stimulation is associated with a myriad of NO-dependent regulatory functions. The study of NO-dependent genetic programs in the setting of endotoxin stimulation can be aided by determinatio ...
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Journal ArticleBiochem Biophys Res Commun · December 21, 2001
In LPS-mediated states of sepsis, inducible nitric oxide synthase (iNOS) expression and nitric oxide (NO) production inhibit cellular respiration and mitochondrial electron transport. NO has been demonstrated to inhibit mitochondrial respiration by nitrosy ...
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Journal ArticleChin Med Sci J · December 2001
To study how to prolong the postoperative survival time of the patients with malignant esophageal tumors. The clinical data of 1098 patients with malignant esophageal tumors from 1961 to 1992 were retrospectively analyzed. The deletion of fragile histamine ...
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Journal ArticleJ Cell Sci · March 2001
The cyclin-dependent kinase member, Cdk5, is expressed in a variety of cell types, but neuron-specific expression of its activator, p35, is thought to limit its activity to neurons. Here we demonstrate that both Cdk5 and p35 are expressed in the human astr ...
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Journal ArticleJ Immunol · January 15, 2001
In a system of endotoxin (LPS)-mediated NO production in ANA-1 murine macrophages, suppression subtractive hybridization was used to identify genes up-regulated by NO. Osteopontin (OPN), a secreted acidic phosphoprotein that binds to a cell surface RGD int ...
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Journal ArticleZhongguo Yi Xue Ke Xue Yuan Xue Bao · December 2000
OBJECTIVE: To study how to prolong the postoperative survival time of the patients with malignant esophageal tumors. METHODS: The clinical data of 1,098 patients with malignant esophageal tumors from 1961 to 1992 were retrospectively analyzed. The deletion ...
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Journal ArticleBiochem Biophys Res Commun · November 2, 2000
The host response to gram-negative endotoxin is characterized by an influx of inflammatory cells into host tissues, mediated in part by localized production of chemokines. In this study, using subtractive suppression hybridization analysis, we demonstrate ...
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Journal ArticleJ Immunol · October 1, 2000
NO can regulate specific cellular functions by altering transcriptional programs and protein reactivity. With respect to global cellular processes, NO has also been demonstrated to inhibit total protein synthesis and cell proliferation. The underlying mech ...
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Journal ArticleZhonghua Liu Xing Bing Xue Za Zhi · February 2000
OBJECTIVE: To explore the prevalence of irritable bowel syndrome (IBS) and its risk factors in Beijing. METHODS: Phase I: a screening program for IBS was carried out in Beijing area according to symptoms using both Manning (modified including constipation) ...
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Journal ArticleZhongguo Yi Xue Ke Xue Yuan Xue Bao · December 1998
OBJECTIVE: To investigate the interaction between Murine Doube Minute 2 (MDM2) oncogene and p53 gene in the evolution of apoptosis in pancreatic carcinoma. METHODS: A recombinant retroviral vector expressing wild-type p53 was constructed and packaged by pa ...
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Journal ArticleChin Med J (Engl) · December 1998
OBJECTIVE: To investigate the effects of wild-type p53 (wtp53) on inducing apoptosis by restoring wtp53 expression in pancreatic adenocarcinoma cell line (PC-2) which contains mutant p53, and the interaction between murine double minute-2 (MDM2) and wtp53 ...
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Journal ArticleZhongguo Yi Xue Ke Xue Yuan Xue Bao · October 1998
OBJECTIVE: To evaluate the effect of the wild-type p53(wtp53) expression on the growth of pancreatic carcinoma cell line. METHODS: A recombinant adenovirus vector (E1 minus)-Ad5CMVwtp53 expressing human wild-type p53 was constructed, the vector contained a ...
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Journal ArticleZhonghua Bing Li Xue Za Zhi · June 1998
OBJECTIVE: To investigate the biological effects of wtp53 expression on the growth rate and apoptosis of human pancreatic carcinoma. METHODS: The Ad5CMVwtp53 a recombinant replication-deficient adenoviral vector containing a human CMV promoter, a human wil ...
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Journal ArticleChin Med Sci J · December 1997
During a 12-year period, 44 patients were surgically treated for stage-III peripheral squamous cell carcinoma of the right upper lobe. The mean time from the discovery of the shadow in the right upper lobe to the confirmation of the diagnosis was 2 months. ...
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ConferenceInvestigative Ophthalmology and Visual Science · December 1, 1997
Purpose: The aim of this work was to develop a small implantahle hioerodihle device giving sustained release of 5-FU for 1-2 weeks and sustained release of a steroid for over 2 months. Previous work had indicated that this may be optimal for the treatment ...
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Journal ArticleZhonghua Bing Li Xue Za Zhi · October 1997
OBJECTIVE: To study the inhibitory effect induced by combined treatment of TNF alpha and antisense oligodeoxynucleotide on the growth of human pancreatic adenocarcinoma cell line (PC-2) cells. METHOD: TNF alpha and synthesized antisense c-myc or Ki-ras pho ...
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Journal ArticleZhonghua Nei Ke Za Zhi · June 1997
We studied the systemic manifestations of myasthenia gravis and its putative pathogenesis. 644 clinically, pharmacologically and electrophysiologically diagnosed patients with myasthenia gravis (MG) were studied. 33 patients had Graves disease, 5 periodic ...
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Journal ArticleInt J Biochem Cell Biol · May 1997
Oxidative stress may be involved in monocrotaline (MCT)-induced endothelial cell injury and upregulation of extracellular matrix proteins in the pulmonary vasculature. To test this hypothesis, cytotoxicity, expression and distribution of tenascin (TN) as w ...
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Journal ArticleClin Exp Hypertens · April 1997
While a number of factors may initiate structural alterations within the cardiovascular system in response to hypertension, there are obligate cellular signaling mechanisms, such as the polyamines, through which they must operate. This study examined the e ...
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Journal ArticleZhonghua Bing Li Xue Za Zhi · August 1996
In order to study the interrelation and interaction between MDM2 oncogene and wild type p53 in human pancreatic cancer, we studied the expression and amplification of MDM2 oncogene and its antagonistic effect on wild type p53 by use of gene recombination, ...
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Journal ArticleInvestigative Ophthalmology and Visual Science · February 15, 1996
Purpose: To develop contact lens giving 24 hour sustained release of an anti-inflammatory (diclofenac) and an anti-biotic (ciprofloxacin). Methods 1) Preliminary Work: Solutions of sodium diclofenac were prepared and added to solutions of ciprofloxacin HCl ...
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Journal ArticleInvestigative Ophthalmology and Visual Science · February 15, 1996
Purpose: This study investigated ion-paired codrug suspensions tobramycin with diclofenac as a means to achieve increased residence time and ocular absorption after topical application. Methods: Solutions of sodium diclofenac were prepared and added to sol ...
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ConferenceInvestigative Ophthalmology and Visual Science · February 15, 1996
Purpose. Last year we described a novel method of delivering a triamcinolone acetonide (TA)/5-FU conjugate as a sustained release suspension for the treatment of PVR in a fibroblast -injection model. Herein, we evaluate the pharmacokinetics and efficacy of ...
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Journal ArticleAtherosclerosis · February 1996
Compared to cholesterol or linoleic acid (18:2), oxidized lipids such as cholestan-3 beta, 5 alpha, 6 beta-triol (triol) and hydroperoxy linoleic acid (HPODE) markedly impair endothelial barrier function in culture [Hennig and Boissonneault, 1987; Hennig e ...
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Journal ArticleChin Med J (Engl) · June 1993
The present study was designed to examine the effect of higher concentration of anisodamine on alpha-adrenergic responses in isolated canine blood vessels. Up to 10(-3) mol/L, anisodamine did not significantly affect the responses of saphenous vein to alph ...
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