Ronald H. Goldstein's research while affiliated with Boston University and other places
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Publications (58)
To identify biological pathways associated with myocardial recovery from heart failure (HF), gene profiling and gene set enrichment analysis (GSEA) were examined in left ventricle of spontaneously hypertensive rats with HF (SHR-F) with no treatment, following treatment with the angiotensin converting enzyme inhibitor captopril, and treatment with c...
Gene expression, determined by micro-array analysis, and left ventricular (LV) remodeling associated with the transition to systolic heart failure (HF) were examined in the spontaneously hypertensive rat (SHR). By combining transcript and gene set enrichment analysis (GSEA) of the LV with assessment of function and structure in age-matched SHR with...
Elastin synthesis is essential for lung development and postnatal maturation as well as for repair following injury. Using human embryonic lung fibroblasts that express undetectable levels of elastin as assessed by Northern analyses, we found that treatment with exogenous transforming growth factor-beta (TGF-beta) induced rapid and transient increa...
Fibulin-5 (FBLN5), an extracellular matrix glycoprotein required for normal elastogenesis, is coordinately expressed with elastin during lung injury and repair. We found that treatment with transforming growth factor-beta (TGF-beta) induced a rapid but transient increase in FBLN5 heterogeneous nuclear RNA (hnRNA) followed by a sustained increased i...
Hormones such as insulin, growth factors, and cell stress stimulate system A amino acid transporter. Transforming growth factor-beta (TGF-beta) stimulates amino acid uptake thereby inducing cell proliferation, cellular hypertrophy, and matrix synthesis. Insulin appears to activate amino acid in smooth muscle cells via a phosphatidylinositol 3-kinas...
The repair of alveolar structures following endotracheal administration of porcine pancreatic elastase (PPE) to mice involves the coordinated deposition of new matrix elements. We determined the induction of the myofibroblast phenotype following elastolytic injury to mouse lung by examining the expression of alpha-smooth muscle actin (alpha-SMA) by...
Osteopontin is a multifunctional matricellular protein identified as one of the most upregulated genes in pulmonary fibrosis. Experimental animal models have identified early pro-fibrotic cytokines as essential to the pathogenesis of inflammation-induced pulmonary fibrosis. However, the principal sources of osteopontin in the fibroproliferative lun...
Macrophage and neutrophil proteinases damage lung elastin, disrupting alveolar epithelium and filling alveoli with inflammatory exudate. Alveolar collapse and regional hypoxia occur. Whether low oxygen tension alters fibroblast-mediated lung repair is unknown. To determine the effect of chronic hypoxia on repair of enzyme-induced elastin disruption...
Interstitial fibroblasts are an integral component of the alveolar wall. These cells produce matrix proteins that maintain the extracellular scaffold of alveolar structures. Emphysema is characterized by airspace enlargement resulting from the loss of alveolar cellularity and matrix. In this study, we explored the endotracheal delivery of fibroblas...
Elastin, a major extracellular matrix protein and the core component of elastic fiber, is essential to maintain lung structural integrity and normal physiological function. We previously found that the downregulation of elastin gene transcription by IL-1beta is mediated via activation of NF-kappaB and CCAAT/enhancer binding protein (C/EBP)beta, bot...
The objective of this study was to investigate the histology of tissue formed when fetal rat lung cells were grown in a collagen-glycosaminoglycan (GAG) tissue-engineering scaffold. The goal was the formation of lung histotypic structures in the tissue-engineering scaffolds in vitro. Achieving this goal would facilitate future investigations of the...
The excess accumulation of type I collagen within tissues leads to organ dysfunction and occurs as a result of an imbalance between synthesis and degradation. This chapter outlines several methods to assess the in vitro production of type I collagen that are employed in our laboratory. We describe Western immunoblotting of intact alpha1(I) collagen...
Uncontrolled elastase activity is involved in the development of several types of lung disease. Previous reports demonstrated that growth factors are liberated from pulmonary matrix storage sites by elastase; however, release of these entities in vivo is not well defined. In the present study, we investigated the release of fibroblast growth factor...
Fibrotic lung diseases are characterized by excess extracellular matrix production, in particular type I collagen. Phenylbutyrate (PB) is a non-toxic pharmacological compound that functions as a weak histone deacetylase inhibitor. In hepatic stellate cells, the synthesis of type I collagen expression is decreased by inhibiting histone acetylation....
We previously showed that interleukin (IL)-1beta decreases elastin gene transcription through activation of the NF-kappaB subunit p65 in neonatal rat lung fibroblasts. The present study was undertaken to further explore the molecular mechanisms responsible for the inhibitory effect of IL-1beta on elastin gene transcription. We found that cyclohexim...
Fibulin-5, previously known as DANCE and EVEC, is a secreted extracellular matrix protein that functions as a scaffold for elastin fiber assembly and as a ligand for integrins alphavbeta3, alphavbeta5, and alpha9beta1. Fibulin-5 is developmentally regulated in the lung, and lung air space enlargement develops in mice deficient in fibulin-5. Fibulin...
Administration of ALL-TRANS retinoic acid (ATRA) to adult Sprague-Dawley rats with emphysema induced by porcine pancreatic elastase (PPE) reversed the emphysema perhaps by inducing new alveolar formation.
A study was conducted to determine whether ATRA can induce new alveolar septa and reverse the airspace enlargement caused in adult mice by PPE tr...
The role of IL-4 in the development of lung fibrosis is as yet unclear. Bleomycin (Bleo) or saline (Sal) was injected intratracheally into three groups of C57BL/6J mice: transgenic animals that overexpressed IL-4 (IL-4 TG, n = 14), mice with a targeted knockout mutation of the IL-4 gene (IL-4 KO, n = 11), and wild-type (WT, n = 13) mice. At 14 days...
Paired pacing has been shown to potentiate contractile function of cardiac muscle, and it has been suggested that this may enhance contractile function of diaphragmatic muscle. The primary goal of this study was to study the effect of paired pacing on potentiation of contractile function of diaphragmatic muscle compared to atrial and ventricular my...
Halofuginone, a coccidiostatic alkaloid, has anti-fibrotic properties, and may be useful as a therapeutic agent in lung fibrosis. To test this hypothesis we investigated the effect of halofuginone on bleomycin-induced lung fibrosis in Sprague-Dawley rats. Treatment groups included: (1) a single intratracheal (IT) instillation of 1.2U bleomycin, and...
Interleukin (IL)-1beta released after lung injury regulates the production of extracellular matrix components. We found that IL-1beta treatment reduced the rate of elastin gene transcription by 74% in neonatal rat lung fibroblasts. Deletion analysis of the rat elastin promoter detected a cis-acting element located at -118 to -102 bp that strongly b...
A single intratracheal dose of porcine pancreatic elastase, which is cleared from the lung by 24 hours, was administered to wild-type, IL-1beta type 1 receptor-deficient, double TNF-alpha (type 1 and type 2) receptor-deficient, and combined TNF-alpha (type 1 receptor) plus IL-1beta receptor-deficient mice. The mean linear intercept (Lm) of saline-t...
Transforming growth factor-beta (TGF-beta) and interleukin-4 (IL-4) have fibrogenic properties and induce extracellular matrix production in a variety of lung diseases. Connective tissue growth factor (CTGF) is a matrix signaling molecule stimulated by TGF-beta that in part mediates alpha1(I) collagen mRNA expression. In these studies, the regulati...
A single intratracheal dose of porcine pancreatic elastase, which is cleared from the lung by 24 hours, was administered to wild-type, IL-1β type 1 receptor-deficient, double TNF-α (type 1 and type 2) receptor-deficient, and combined TNF-α (type 1 receptor) plus IL-1β receptor-deficient mice. The mean linear intercept (Lm) of saline-treated mice wa...
Previously, we have demonstrated that basic fibroblast growth factor (bFGF) decreases elastin gene transcription in confluent rat lung fibroblasts via the binding of a Fra-1-c-Jun heterodimer to an activator protein-1-cAMP response element in the distal region of the elastin promoter. In the present study, we show that bFGF activates the mitogen-ac...
We investigated the effect of the dietary flavonoid apigenin on myofibroblast function. We report that in myofibroblasts treated with apigenin, proliferation and basal levels of alpha1(I) collagen and alpha-smooth muscle actin mRNAs were markedly reduced. Apigenin also attenuated the transforming growth factor-beta-stimulated increases of alpha1(I)...
We investigated the role of phosphatidylinositol 3-kinase (PI3K) in the expression of alpha1(I) collagen mRNA. We report that the basal level of alpha1(I) collagen mRNA was reduced when PI3K activity was inhibited by either LY-294002 or wortmannin. These PI3K inhibitors also blocked increases of alpha1(I) collagen mRNA levels after the addition of...
All-trans-retinoic acid (ATRA) has anti-fibrotic and antiinflammatory properties, and may be useful as a therapeutic agent in lung fibrosis. To test this hypothesis we investigated the effect of ATRA on bleomycin-induced lung fibrosis in Sprague-Dawley rats. Treatment groups included: (1) a single intratracheal (i.t.) instillation of bleomycin and...
Hypoxia and amino acid deprivation downregulate expression of extracellular matrix genes in lung fibroblasts. We examined the effect of hypoxia on amino acid uptake and protein formation in human lung fibroblasts. Low O(2) tension (0% O(2)) suppressed incorporation of [(3)H]proline into type I collagen without affecting [(35)S]methionine labeling o...
Since transforming growth factor beta (TGF-beta) is presumed to play a role in lung fibrosis, we evaluated the effect of suramin (Sur), a substance with an anti-TGF-beta effect, in vivo on bleomycin (Bleo)-induced pulmonary injury in mice and in vitro on human lung fibroblasts. Four groups of C57BL/6 mice each received one of four treatments: (1) i...
P148
The arterial wall in hypertension is characterized by thickening of the media, in part due to increased deposition of connective tissue. Autocrine and paracrine factors may participate in this process; including products of the kallikrein-kinin system. We evaluated early signal transduction events and effects on collagen formation in B 1 -stim...
Transforming growth factor-beta (TGF-beta) stimulates alpha(1)(I) collagen mRNA synthesis in human lung fibroblasts through a mechanism that is partially sensitive to cycloheximide and that may involve synthesis of connective tissue growth factor (CTGF). Northern blot analyses indicate that TGF-beta stimulates time- and dose-dependent increases in...
Fibrotic lung diseases are characterized by excessive deposition of type I collagen. Amino acid availability regulates type I collagen mRNA levels in quiescent human lung fibroblasts. In these studies, the effect of amino acid availability on type I collagen protein accumulation in quiescent human lung fibroblasts was examined. Following amino acid...
Elastolytic lung injury disrupts cell barriers, flooding alveoli and producing regional hypoxia. Abnormal O2 tensions may alter repair of damaged elastin fibers. To determine the effect of hypoxia on extravascular elastin formation, we isolated rat lung fibroblasts and cultured them under a variety of O2 conditions. Hypoxia downregulated tropoelast...
Prostaglandin E2 (PGE2) is an inflammatory mediator capable of regulating fibroblast cell proliferation, matrix protein production, and system A amino acid transport. System x-c amino acid transport is regulated by electrophilic agents and oxygen. The effect of PGE2 on the x-c system transport of cystine and the synthesis of glutathione by human lu...
Treatment of hamster lungs with porcine pancreatic elastase (PPE) causes emphysema and a decrease in lung elastin content, which returns to control level by Day 30. To explore the mechanism of alveolar wall remodeling after elastolytic injury, we examined the expression of elastin and α1(I) collagen mRNAs by in situ hybridization at 1, 2, 3, 5, 7,...
The steady-state level of alpha1(I) collagen mRNA is regulated by amino acid availability in human lung fibroblasts. Depletion of amino acids decreases alpha1(I) collagen mRNA levels and repletion of amino acids induces rapid re-expression of alpha1(I) mRNA. In these studies, we examined the requirements for individual amino acids on the regulation...
Spontaneously hypertensive rats (SHR) commonly develop impairment of myocardial function between ages 18-24 months. Isolated muscle studies demonstrate depressed myocardial contractility and increased passive stiffness. Studies of the extracellular matrix in SHR with failure (SHR-F) demonstrate an increased expression of genes encoding extracellula...
The steady state levels of alpha1(I) collagen mRNA are decreased by retinoic acid and prostaglandin E2. These effector substances decrease the uptake of A system amino acids. We examined the effect of amino acid deprivation on the steady state levels of alpha1(I) collagen in human lung fibroblasts. Maintenance of fibroblasts in amino acid-free medi...
We have evaluated the effect of intraperitoneal (IP) injection of human recombinant interferon-2α (IFN-α) on Bleomycin-induced pulmonary injury in hamsters. Pulmonary injury was induced by a single intratracheal (IT) instillation of Bleomycin (Bleo). Six groups of male Syrian hamsters were treated as follows: 1) IT Bleo and daily IP injections of l...
Transgenic mice containing a rat collagen alpha 1 (I) promoter (3.6 kilobases) fused to the reporter gene chloramphenicol acetyl transferase (CAT) express the reporter gene parallel to endogenous gene in most connective tissues other than vascular tissue [Pavlin et al. (1992): J Cell Biol 116:227-236; Bedalov et al. (1994): J Biol Chem 269:4903-490...
Prostaglandin E2, transforming growth factor-beta, and interleukin-1 beta variably regulate the expression of cyclooxygenase 1, cyclooxygenase 2, and lysyl oxidase in IMR90, human embryo lung fibroblasts. Prostaglandin E2 at 100 nM upregulates cyclooxygenase 1 mRNA by approximately three-fold while it downregulates lysyl oxidase mRNA levels. Notabl...
The type I transforming growth factor-beta (TGF-beta) receptors are serine/threonine kinases that are essential for the action of TGF-beta. In this paper, we describe the molecular cloning and expression of the R4/ALK5 human type I TGF-beta receptor promoter. DNA sequence analysis indicates that the promoter lacks a TATA and CAAT box but is highly...
This study evaluated the effect of cyclosporin-A (CyA), a potent immunosuppressive drug, on Bleomycin (Bleo)-induced pulmonary inflammation in hamsters. Pulmonary injury was induced by a single intratracheal (i.t.) instillation of Bleo. Four groups of 10 male Syrian hamsters each received one of four treatments: (1) i.t. Bleo and daily intraperiton...
The effects and interaction of transforming growth factor-β (TGF-β) and insulin on collagen production in human fetal lung fibroblasts was examined. Fibroblasts were labeled with |3H|proline and collagen production was analyzed by polyacrylamide gel electrophoresis. The addition of insulin (2 μg/ml) increased collagen production 5 fold and TGF-β (5...
Fibrotic process affecting the lung and other tissues is characterized by stimulation of fibroblast proliferation and connective tissue deposition. Conventional therapy consisting of glucocorticoids or cytotoxic agents is usually ineffective in blocking progression of disease. Potential new therapies have emerged from the use of animal models of pu...
The effect of PGE2 on TGF-β receptor binding was assessed for both signaling (type I and type II) and non-signaling (type III) TGF-β receptors. We found in cross-linking studies that PGE2 treatment (24 h) decreased binding of TGF-β to the type I and type II receptors by approx. 50% and markedly increased binding of TGF-β to type III receptors nearl...
We examined alpha 1(I) collagen gene expression in all-trans retinoic acid (RA)-treated human lung fibroblast cultures. RA (10(-5)M) decreased steady-state levels for alpha 1(I) collagen mRNA by at least 75% after 24 h. The inhibition was evident within 8 h after addition of RA, was dose dependent and reversible. Treatment with 9-cis-retinoic acid...
A transforming growth factor-@ (TGF-@) activating element (TAE), with a nuclear factor-1 (NF-1)-like sequence, was previously located 1.6 kilobases up-stream from the transcription start site in the al(1) collagen promoter (Ritzenthaler, J.. Double-stranded TAE, but not NF-1 consensus sequences, ab-rogated TGF-@ stimulation of co-transfected collag...
We examined the expression of type I collagen genes in prostaglandin E2 (PGE2)-treated human lung fibroblast cultures. Addition of PGE2 to fibroblast cultures inhibited α1(I) mRNA levels by approx. 25% after 6 h and 60% after 24 h. Further studies showed that dibutyryl cAMP did not inhibit α1(I) mRNA levels and that cycloheximide blocked the inhibi...
We examined the expression of type I collagen mRNAs (α1(I) and α2(I)) by embryonic lung fibroblasts in cultures treated with transforming growth factor-β (TGF-β). TGF-β caused a concentration dependent increase in the expression of α1(I) mRNA for type I collagen. TGF-β at low concentration (0.1 ng/ml) slightly increased the level of α1(I) mRNA. Hig...
We examined the effects of insulin and insulin-like growth factor I (IGF-I) on the production of collagen by cultures of human embryonic lung fibroblasts. Insulin at 20 ng/ml increased collagen accumulation by 58% and total protein formation by 18%. At 2 micrograms/ml, insulin increased collagen production by 2- to 3-fold and total protein producti...
The effect of prostaglandin E2 (PGE2) on fibroblast proliferation was examined. The presence of PGE2 for 24 h inhibited the growth of quiescent cells stimulated with serum, platelet-derived growth factor and macrophage-derived factors. Maximal inhibition of nuclear labeling with [3H]thymidine occurred at concentrations greater than 10(-7) M. The in...
Pretreatment of human lung fibroblasts with PGE2 but not PGF2α enhanced synthesis of prostaglandins (PGs). The effect of the pretreatment on PG synthesis was related to the concentration of PGE2 that was added to the culture medium. Pretreatment with PGE2 at 5 × 10−12M did not enhance PG synthesis whereas pretreatment with PGE2 at 5 × 10−6M induced...
Citations
... FN is a major constituent of the ECM [61][62][63][64]. It is synthesized as a soluble protein and assembled into an insoluble fibrillar matrix outside of cells [44,65,66]. ...
... Although emphysema is defined by the destruction of distal air spaces, with or without fibrosis [97], the majority of clinical studies have described an increase in the amount of ECM fiber deposition in the airways and the lung parenchyma [112][113][114][115]. However, it is important to emphasize that these evaluations were usually performed in patients who were in advanced stages of the disease and in experimental models, after a few days of disease induction [104,[116][117][118]. ...
... 5 μm sections were cut and slides were stained with H&E. Mean linear intercept (MLI), a measurement of airspace destruction and a metric used in experimental models of emphysema, was measured as previously described [25,56]. MLI was determined by selecting 10 fields from an H&E stained slide of the left lung by a blinded reviewer. ...
... To determine the role of protein synthesis and prostaglandins on hypoxia-induced suppression of methyl-AIB uptake, cells were treated with 0% O 2 in the presence and absence of cycloheximide or indomethacin. Cycloheximide at 5 M inhibits 85% of protein synthesis in human lung fibroblasts (17). As reported in these cells (16), cycloheximide alone decreased methyl-AIB uptake (Fig. 6), suggesting the constitutive expression of an activating protein. ...
... There are certainly major differences between the two type I promoters and there may be species differences between human and murine promoters. We employed transgenic animals to examine the function of the collagen ␣1(I) promoter fragment in vivo [Agarwal et al., 1996]. When transgenic mice carrying 3.6 kb of rat collagen promoter driving CAT reporter gene (ColCAT3.6) ...
... The enzymes treatment of cancer has a long history, first in 1902 with the work of Dr John Beard; a professor at the University of Edinburgh proposed that the pancreatic proteolytic enzyme trypsin represent powerful anti-cancer tool phenotypic revertants [14] . L-lysine alpha-oxidase was also recognized as a target for the anti-oncogenic transcription factor, interferon regulatory element-1 (IRE-1), which manifests tumor suppressor activity and contributes to the development of human hematopoietic malignancies [15] . [16] reported that malignant human breast carcinomas and broncho-pulmonary carcinomas LOX was highly expressed in hypertrophic scar-like stroma, surrounding the in situ tumor which forms a peritumor barrier, type I, III, and IV collagens and elastin were found to be co-distributed. ...
... Transforming growth factor-beta 1 (TGF-β1), which plays a very important role in collagen expression [19], has also been widely implicated in the development of tissue fibrosis. Certainly, in both human and animal models of post-traumatic joint contracture, TGF-β1 expression is increased in the joint capsule [20]. ...
... These genes belong to interferonstimulated genes, related closely to interferon signaling (Schneider et al., 2014). Previous studies suggested that interferon (IFN) and IFN-stimulated genes might be involved in pulmonary fibrosis (Neville et al., 1997;Berkmana et al., 2001;Christmann et al., 2014). The low dose of IFN-α could promote bleomycin-induced lung fibrosis in mice and hamsters, though this effect was complicated and might also be influenced by IFN preparations (Neville et al., 1997;Berkmana et al., 2001). ...
... It was suggested that PGE2 was produced in response to the TGF~ and this was mediating the anti-proliferative effects. PGE2 has been shown to decrease the expression ofTGF~ RI and RII and also has the effect of decreasing the binding ofTGF~ to TGF~ RI and RII by 50% (304). Indomethacin, an inhibitor ofPGE2 overcame the inhibitory effects observed in the 1997 McAnulty study (140) and restored the proliferative effects seen previously using low concentrations of ligand. ...
... Furthermore, fibroblasts derived from the aged mouse heart respond to pathophysiological levels of insulin by upregulating an already elevated ERK phosphorylation and increasing collagen type I expression even further (42). Insulin-dependent ERK activation has also been reported by others (101,103). It is not known whether there is cross talk between any of these pathways (TGF-, PDGF, EGF, and insulin) in aging cardiac fibroblasts, although weak synergism between insulin and EGF has been reported in other models (22). ...