Browse Items · NEOMED Bibliography Database

On the mechanism of bile acid inhibition of rat sterol 12alpha-hydroxylase gene (CYP8B1) transcription: roles of alpha-fetoprotein transcription factor and hepatocyte nuclear factor 4alpha.

The sterol 12alpha-hydroxylase (CYP8B1) is a key enzyme of the bile acid biosynthetic pathway. It regulates the composition of bile acids in bile, i.e. ratio between cholic acid (CA) and chenodeoxycholic acid (CDCA). In similarity with cholesterol…

HNF4 and COUP-TFII interact to modulate transcription of the cholesterol 7alpha-hydroxylase gene (CYP7A1).

The gene for cholesterol 7alpha-hydroxylase (CYP7A1) contains a sequence at nt -149 to -118 that was found to play a large role in determining the overall transcriptional activity and regulation of the promoter. Hepatocyte nuclear factor 4 (HNF4) and…

Estrogen receptor-alpha and -beta coexist in a subpopulation of sensory neurons of female rat dorsal root ganglia.

Immunoreactivities for estrogen receptor-alpha (ER-alpha) and ER-beta are expressed in sensory neurons of the dorsal root ganglia (DRG). It has not been established, however, if the two receptor subtypes coexist in the same neuron. Double-staining…

Estrogen receptor-alpha and beta- immunoreactivity and mRNA in neurons of sensory and autonomic ganglia and spinal cord.

Estrogen receptor-alpha immunoreactivity and mRNAs are present in neurons in locales that innervate genital organs, e.g., parasympathetic pelvic autonomic ganglia, sensory dorsal root and nodose ganglia, and autonomic areas of the lumbosacral spinal…

Rat alpha1-macroglobulin enhances nerve growth factor-promoted neurite outgrowth, TrkA phosphorylation, and gene expression of pheochromocytoma PC12 cells.

Monoamine-activated human alpha2-macroglobulin (alpha2M) has been previously demonstrated to inhibit TrkA-, TrkB-, and TrkC-mediated signal transduction. Rat alpha1-macroglobulin (alpha1M) and alpha2M are structural homologues of human alpha2M, but…

Rat alpha(2)-macroglobulin inhibits NGF-promoted neurite outgrowth, TrK phosphorylation, and gene expression of pheochromocytoma PC12 cells.

Rat alpha-1-macroglobulin (alpha(1)M) and alpha-2-macroglobulin (alpha(2)M) are murine homologs of human alpha(2)M, and rat alpha(2)M is generally known as an acute-phase protein. Monoamine-activated forms of human alpha(2)M have been shown to…

Tags: 1999, Adrenal Gland Neoplasms/metabolism, alpha-Macroglobulins/*pharmacology, Animals, Gene Expression Regulation, Journal of neuroscience research, Koo P H, Lee P G, Neoplastic/*drug effects, Nerve Growth Factors/*antagonists & inhibitors, Neurites/*drug effects, PC12 Cells, Pheochromocytoma/metabolism, Phosphorylation, Proto-Oncogene Proteins c-jun/genetics, Rats, Receptor, Sprague-Dawley, trkA/*metabolism

Estrogen decreases corpus striatal neurotoxicity in response to

Ovariectomized rats treated or not with an estradiol pellet were subjected to an unilateral intrastriatal infusion of 6-hydroxydopamine (6-OHDA). Various parameters of nigrostriatal dopaminergic function as derived from measurements of dopamine and…

Tags: 1997, 3, 4-Dihydroxyphenylacetic Acid/metabolism, Animal, Animals, Brain research, Corpus Striatum/*drug effects, Disease Models, Dluzen D, Dopamine/metabolism, Estradiol/*pharmacology, Female, Neurotoxins/*toxicity, Oxidopamine/*toxicity, Parkinson Disease/*physiopathology, Rats, Sprague-Dawley

Inhibition of striatal dopamine transporter activity by 17beta-estradiol.

Striatal synaptosomes from ovariectomized rats were prepared to examine the effect of 17beta-estradiol on [3H]dopamine uptake. Estradiol inhibited [3H]dopamine uptake in a dose-dependent manner, with an IC50 of 7.2 microM. Use of identical…

Tags: *Membrane Glycoproteins, *Membrane Transport Proteins, *Nerve Tissue Proteins, 1998, Animals, Boja J W, Carrier Proteins/*antagonists & inhibitors, Disshon K A, Dluzen D E, Dopamine Plasma Membrane Transport Proteins, Dopamine/metabolism, Estradiol/*pharmacology, European journal of pharmacology, Female, Neostriatum/*drug effects/metabolism, Rats, Sprague-Dawley, Synaptosomes/*drug effects/metabolism

Testosterone causes direct relaxation of rat thoracic aorta.

Several recent studies have provided evidence that gonadal steroid hormones can exert acute (nongenomic) effects on both neural and vascular tissues. This study examines the acute effects of testosterone (T) on vascular reactivity of the rat thoracic…

Identification and characterization of a putative bile acid-responsive element in cholesterol 7 alpha-hydroxylase gene promoter.

Nucleotide sequences of a 7997-base pair SacI fragment spanning 3643 base pairs of the upstream promoter region to exon 4 of the rat cholesterol 7 alpha-hydroxylase gene (CYP7) have been determined. DNase I footprinting and electrophoretic mobility…

Developmental alterations in N-methyl-D-aspartate stimulated [3H]norepinephrine release in rat brain cortex and hippocampus.

Developmental alterations in N-methyl-D-aspartate (NMDA)-stimulated[3H]norepinephrine release from rat brain cortical and hippocampal slices were studied. NMDA (10-1000 microM) resulted in a concentration-dependent increase in [3H]norepinephrine…

Tags: 1993, 2-Amino-5-phosphonovalerate/pharmacology, Animals, Brown L M, Cerebral Cortex/drug effects/*growth & development/metabolism, Female, Hippocampus/drug effects/*growth & development/metabolism, In Vitro Techniques, Male, N-Methylaspartate/*pharmacology, Neuroscience letters, Norepinephrine/*metabolism, Rats, Sprague-Dawley

Functional outcome after anal sphincter injury and treatment with mesenchymal stem cells.

This research demonstrates the regenerative effects of mesenchymal stem cells (MSCs) on the injured anal sphincter by comparing anal sphincter pressures following intramuscular and serial intravascular MSC infusion in a rat model of anal sphincter…

Mechanism of Breast Cancer Preventive Action of Pomegranate: Disruption of Estrogen Receptor and Wnt/beta-Catenin Signaling Pathways.

A pomegranate emulsion (PE), containing various bioactive phytochemicals, has recently been found to exert substantial chemopreventive effect against 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary tumorigenesis in rats via antiproliferative…

Trianthema portulacastrum Linn. displays anti-inflammatory responses during chemically induced rat mammary tumorigenesis through simultaneous and differential regulation of NF-kappaB and Nrf2 signaling pathways.

Trianthema portulacastrum, a medicinal and dietary plant, has gained substantial importance due to its various pharmacological properties, including anti-inflammatory and anticarcinogenic activities. We have recently reported that a characterized T.…

Black currant anthocyanins abrogate oxidative stress through Nrf2- mediated antioxidant mechanisms in a rat model of hepatocellular carcinoma.

Hepatocellular carcinoma (HCC), considered to be one of the most lethal cancers with almost \textgreater 1 million deaths reported annually worldwide, remains a devastating disease with no known effective cure. Hence, chemopreventive strategies come…

Tags: *Phytotherapy, 2012, Alkylating Agents/toxicity, Animals, Anthocyanins/*therapeutic use, Antioxidants/therapeutic use, Barnes Kendra F, Bhatia Deepak, Bishayee Anupam, Blotting, Carcinoma, Current cancer drug targets, Darvesh Altaf S, Department of Pharmaceutical Sciences, Diet, Diethylnitrosamine/toxicity, Experimental/chemically induced/metabolism/*prevention & control, Glutathione Transferase, Haznagy-Radnai Erzsebet, Hepatocellular/chemically induced/metabolism/*prevention & control, Hohmann Judit, Immunoenzyme Techniques, Lipid Peroxidation/drug effects, Liver Neoplasms, Male, Messenger/genetics, NEOMED College of Pharmacy, NF-E2-Related Factor 2/genetics/*metabolism, Nitric Oxide Synthase Type II/genetics/metabolism, Oxidative Stress/*drug effects, Rats, Real-Time Polymerase Chain Reaction, Reverse Transcriptase Polymerase Chain Reaction, Ribes/*chemistry, RNA, Signal Transduction, Sprague-Dawley, Thoppil Roslin J, Tyrosine/analogs & derivatives/metabolism, Western

Alteration of hepatic proinflammatory cytokines is involved in the resveratrol-mediated chemoprevention of chemically-induced hepatocarcinogenesis.

Hepatocellular carcinoma (HCC), one of the most common cancers in the world, is a leading cause of cancerrelated mortality. HCC develops most frequently in the background of oxidative stress and chronic hepatic inflammation due to viral infections,…

Vagal afferents reflexly inhibit exercise in conscious rats.

Activation of vagal afferents reflexly inhibited locomotion induced by stimulation of the mesencephalic locomotor region in decerebrate cats. However, this reflex has not been tested in intact mammals. Therefore, the purpose of this study was to test…

TGFbeta1, TNFalpha, and insulin signaling crosstalk in regulation of the rat cholesterol 7alpha-hydroxylase gene expression.

The TGFbeta1/Smad pathway plays a critical role in cholestasis and liver fibrosis. Previous studies show that TGFbeta1, TNFalpha, and insulin inhibit cholesterol 7alpha-hydroxylase (CYP7A1) gene transcription and bile acid synthesis in human…

Turnover of histones and histone variants in postnatal rat brain: effects of alcohol exposure.

BACKGROUND: Alcohol consumption during pregnancy is a significant public health problem and can result in a continuum of adverse outcomes to the fetus known as fetal alcohol spectrum disorders (FASD). Subjects with FASD show significant neurological…

RNA interference for CFTR attenuates lung fluid absorption at birth in rats.

BACKGROUND: Small interfering RNA (siRNA) against alphaENaC (alpha-subunit of the epithelial Na channel) and CFTR (cystic fibrosis transmembrane conductance regulator) was used to explore ENaC and CTFR function in newborn rat lungs. METHODS:…

Angiotensin II-induced extracellular signal-regulated kinase 1/2 activation is mediated by protein kinase Cdelta and intracellular calcium in adult rat cardiac fibroblasts.

Angiotensin II (Ang II)-induced proliferation of cardiac fibroblasts is a major contributing factor to the pathogenesis of cardiac fibrosis. Ang II activates extracellular signal-regulated kinase (ERK) 1/2 to induce cardiac fibroblast proliferation,…

Induction of vascular progenitor cells from endothelial cells stimulates coronary collateral growth.

RATIONALE: A well-developed coronary collateral circulation improves the morbidity and mortality of patients following an acute coronary occlusion. Although regenerative medicine has great potential in stimulating vascular growth in the heart, to…

Tags: *Collateral Circulation, *Coronary Circulation, 2012, Animal, Animals, Bailey Erin, Biomarkers/metabolism, Cell Differentiation, Cell Lineage, Cells, Chilian William M, Circulation research, Coronary Occlusion/genetics/metabolism/pathology/physiopathology/*surgery, Coronary Vessels/metabolism/pathology/*physiopathology, Cultured, Delucia Angelo, Department of Integrative Medical Sciences, Developmental, Disease Models, Endothelial Cells/metabolism/pathology/*transplantation, Enrick Molly, Epigenesis, Gene Expression Profiling, Gene Expression Regulation, Genetic, Guarini Giacinta, Induced Pluripotent Stem Cells/metabolism/*transplantation, Kolz Christopher L, Mice, Muscle, Myocytes, NEOMED College of Medicine, Neovascularization, Ohanyan Vahagn, Physiologic, Pung Yuh Fen, Rats, Regenerative Medicine/methods, Regional Blood Flow, Reverse Transcriptase Polymerase Chain Reaction, SCID, Smooth, Smooth Muscle/metabolism/pathology/*transplantation, Sprague-Dawley, Stevanov Kelly, Teratoma/metabolism/pathology, Time Factors, Transcription Factors/genetics/metabolism, Transduction, Vascular/metabolism/pathology/*physiopathology, Yin Liya

Resveratrol suppresses oxidative stress and inflammatory response in diethylnitrosamine-initiated rat hepatocarcinogenesis.

Hepatocellular carcinoma (HCC), one of the most frequent and deadliest cancers, has been increasing considerably in the United States. In the absence of a proven effective therapy for HCC, novel chemopreventive strategies are urgently needed to lower…

Tags: 2010, Animals, Antioxidants/*pharmacology/therapeutic use, Antitumor, Barnes Kendra F, Bhatia Deepak, Bishayee Anupam, Cancer prevention research (Philadelphia, Pa.), Carcinogens/toxicity, Carroll Richard T, Chemical and Drug Induced Liver Injury/*etiology/metabolism/pathology, Darvesh Altaf S, Department of Pharmaceutical Sciences, Diethylnitrosamine/toxicity, Dose-Response Relationship, Drug, Drug Screening Assays, Enzyme Induction/drug effects, Experimental/chemically induced/metabolism/pathology/*prevention & control, Female, Hyperplasia, Inflammation/*prevention & control, Lipid Peroxidation/drug effects, Liver Neoplasms, Liver/drug effects/metabolism/pathology, Messenger/biosynthesis/genetics, NEOMED College of Pharmacy, NF-E2-Related Factor 2/biosynthesis/genetics, Nitric Oxide Synthase Type II/biosynthesis/genetics, Oxidative Stress/*drug effects, Phenobarbital/toxicity, Precancerous Conditions/*chemically induced/metabolism/pathology, Rats, Resveratrol, RNA, Sprague-Dawley, Stilbenes/*pharmacology/therapeutic use, Tyrosine/analogs & derivatives/analysis

Effect of epinephrine on alveolar liquid clearance in the rat.

Endogenous epinephrine has been found to increase alveolar liquid clearance (ALC) in several pulmonary edema models. In this study, we infused epinephrine intravenously for 1 h in anesthetized rats to produce plasma epinephrine concentrations…

Daily spontaneous running alters behavioral and neurochemical indexes of nigrostriatal function.

Behavioral and neurochemical indexes of nigrostriatal dopaminergic function were compared between sedentary control rats (n = 12) and daily spontaneous running (DSR) male rats (n = 10). Nine weeks of DSR did not significantly alter body, heart,…

Daily exercise improved blood pressure homeostasis of rats subjected to surgical stress.

The effect of daily spontaneous running on blood pressure homeostasis (BPH) was evaluated in 19 male and 13 female control rats and 7 male and 13 female daily spontaneous running rats subjected to surgery and subsequent repetitive hemodynamic…

Tags: *Blood Pressure, *Homeostasis, *Physical Conditioning, 1994, Animal, Animals, DiCarlo S E, Female, Jarjoura D G, Journal of applied physiology (Bethesda, Md. : 1985), Male, Operative/*adverse effects, Physiological/*etiology/*physiopathology, Rats, Running, Scislo T J, Sprague-Dawley, Stress, Surgical Procedures

Effect of peak inspiratory pressure on the filtration coefficient in the isolated perfused rat lung.

Positive inspiratory pressure- (PIP) ventilated, isolated rat lungs become edematous when perfused at rates approximately the normal cardiac output. The study was conducted to test the hypothesis that high peak inspiratory pressures contribute to the…

Mesenchymal stem cells and their secretome partially restore nerve and urethral function in a dual muscle and nerve injury stress urinary incontinence model.

Childbirth injures muscles and nerves responsible for urinary continence. Mesenchymal stem cells (MSCs) or their secretome given systemically could provide therapeutic benefit for this complex multisite injury. We investigated whether MSCs or their…

Mesenteric vascular responses to vasopressin during development of DOCA-salt hypertension in male and female rats.

Deoxycorticosterone acetate (DOCA)-salt hypertension develops to a greater extent in male (M) than in female (F) rats. To determine the role of the vasculature, reactivity to arginine vasopressin (AVP) and prostanoid output were examined in the…

Beta-adrenoceptor stimulation of alveolar fluid clearance is increased in rats with heart failure.

The alveolar epithelium plays a critical role in resolving pulmonary edema. We thus hypothesized that its function might be upregulated in rats with heart failure, a condition that severely challenges the lung's ability to maintain fluid balance.…

The adenosine 2A receptor agonist GW328267C improves lung function after acute lung injury in rats.

There is a significant unmet need for treatments of patients with acute lung injury (ALI) and/or acute respiratory distress syndrome (ARDS). The primary mechanism that leads to resolution of alveolar and pulmonary edema is active vectorial Na(+) and…

Tags: 2012, Acute Lung Injury/*drug therapy/metabolism/pathology, Adenosine A2A/*chemistry, Adenosine/*analogs & derivatives/therapeutic use, American journal of physiology. Lung cellular and molecular physiology, Amiloride/pharmacology, Animals, Biological Transport, Bronchoalveolar Lavage, Cystic Fibrosis Transmembrane Conductance Regulator/metabolism, Endotoxemia/*drug therapy/metabolism/microbiology, Epithelial Sodium Channel Blockers, Epithelial Sodium Channels/metabolism, Escherichia coli, Escherichia coli Infections/drug therapy/metabolism/microbiology, Folkesson Hans G, Immunoblotting, Kuzenko Stephanie R, Lipson David A, Male, Matthay Michael A, Pneumonia/*drug therapy/metabolism/microbiology, Pulmonary Alveoli/cytology/*drug effects/metabolism, Pulmonary Edema/*drug therapy/metabolism/pathology, Rats, Receptor, Respiratory Physiological Phenomena, Simmons Mark A, Sodium Channel Blockers/pharmacology, Sprague-Dawley, Triazoles/*therapeutic use

Prolonged isoproterenol infusion impairs the ability of beta(2)-agonists to increase alveolar liquid clearance.

We determined if prolonged isoproterenol (Iso) infusion in rats impaired the ability of the beta(2)-adrenergic agonist terbutaline to increase alveolar liquid clearance (ALC). We infused rats with Iso (at rates of 4, 40, or 400 microg.kg(-1).h(-1))…

Postreceptor defects in alveolar epithelial beta-adrenergic signaling after prolonged isoproterenol infusion.

We previously found that prolonged isoproterenol (Iso) infusion in rats impaired the ability of beta-adrenoceptor (beta-AR) agonists to increase alveolar liquid clearance (ALC). Here, we determined if postreceptor defects in beta-AR signaling…

RNA interference for alpha-ENaC inhibits rat lung fluid absorption in vivo.

We used siRNA against the alpha-ENaC (epithelial Na channel) subunit to investigate ENaC involvement in lung fluid absorption in rats by the impermeable tracer technique during baseline and after beta-adrenoceptor stimulation by terbutaline.…

Distal air space epithelial fluid clearance in near-term rat fetuses is fast and requires endogenous catecholamines.

Knowledge about the conversion of the epithelium in the distal air spaces of the lung from secretion to absorption is imperative to the understanding of postnatal lung development; little such information is available in rats. Distal air space fluid…

Involvement of {alpha}ENaC and Nedd4-2 in the conversion from lung fluid secretion to fluid absorption at birth in the rat as assayed by RNA interference analysis.

To explore interactions between the epithelial Na channel (ENaC) and neural precursor expressed, developmentally downregulated protein 4-2 (Nedd4-2) at the conversion of the rat lung from fluid secretion to absorption at birth, we used…

PKA delivery to the distal lung air spaces increases alveolar liquid clearance after isoproterenol-induced alveolar epithelial PKA desensitization.

Isoproterenol (Iso) infusion for 48 h in rats decreases the ability of beta-adrenoceptor (beta-AR) agonists to increase alveolar liquid clearance (ALC). An impairment in protein kinase A (PKA) function appears to be critical in producing the…

Congenital diaphragmatic hernia prevents absorption of distal air space fluid in late-gestation rat fetuses.

We hypothesized that congenital diaphragmatic hernia (CDH) may decrease distal air space fluid absorption due to immaturity of alveolar epithelial cells from a loss of the normal epithelial Na+ transport, as assessed by amiloride and epithelial Na+…

Impaired alveolar liquid clearance after 48-h isoproterenol infusion spontaneously recovers by 96 h of continuous infusion.

We previously demonstrated that 48-h isoproterenol (Iso) infusion in rats impaired the ability of beta-adrenoceptor (beta-AR) agonists to increase alveolar liquid clearance (ALC). In this study, we determined whether this impairment persisted over…

Daily exercise and gender influence arterial baroreflex regulation of heart rate and nerve activity.

The influence of daily spontaneous running (DSR) and gender on the arterial baroreflex regulation of heart rate (HR) and lumbar sympathetic nerve activity (LSNA) was examined in 13 male [7 sedentary (SED) and 6 DSR] and 12 female (6 SED and 6 DSR)…

Tags: *Physical Conditioning, *Sex Characteristics, 1996, Animal, Animals, Arteries/*physiology, Baroreflex/*physiology, Chen C Y, DiCarlo S E, Female, Heart Rate/*physiology, Lumbosacral Region, Male, Rats, Rest, Sprague-Dawley, Sympathetic Nervous System/*physiology, The American journal of physiology

Browse Items (158 total)