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Articles 31 - 36 of 36
Full-Text Articles in Medical Toxicology
P53 Regulates Oxidative Stress-Mediated Retrograde Signaling: A Novel Mechanism For Chemotherapy-Induced Cardiac Injury, Joyce M. Velez, Sumitra Miriyala, Ramaneeya Nithipongvanitch, Teresa Noel, Chotiros D. Plabplueng, Terry Oberley, Paiboon Jungsuwadee, Holly Van Remmen, Mary Vore, Daret K. St Clair
P53 Regulates Oxidative Stress-Mediated Retrograde Signaling: A Novel Mechanism For Chemotherapy-Induced Cardiac Injury, Joyce M. Velez, Sumitra Miriyala, Ramaneeya Nithipongvanitch, Teresa Noel, Chotiros D. Plabplueng, Terry Oberley, Paiboon Jungsuwadee, Holly Van Remmen, Mary Vore, Daret K. St Clair
Toxicology and Cancer Biology Faculty Publications
The side effects of cancer therapy on normal tissues limit the success of therapy. Generation of reactive oxygen species (ROS) has been implicated for numerous chemotherapeutic agents including doxorubicin (DOX), a potent cancer chemotherapeutic drug. The production of ROS by DOX has been linked to DNA damage, nuclear translocation of p53, and mitochondrial injury; however, the causal relationship and molecular mechanisms underlying these events are unknown. The present study used wild-type (WT) and p53 homozygous knock-out (p53(-/-)) mice to investigate the role of p53 in the crosstalk between mitochondria and nucleus. Injecting mice with DOX (20 mg/kg) causes oxidative stress …
The Aryl Hydrocarbon Receptor Binds To E2f1 And Inhibits E2f1-Induced Apoptosis., Jennifer L Marlowe, Yunxia Fan, Xiaoqing Chang, Li Peng, Erik S Knudsen, Ying Xia, Alvaro Puga
The Aryl Hydrocarbon Receptor Binds To E2f1 And Inhibits E2f1-Induced Apoptosis., Jennifer L Marlowe, Yunxia Fan, Xiaoqing Chang, Li Peng, Erik S Knudsen, Ying Xia, Alvaro Puga
Kimmel Cancer Center Faculty Papers
Cellular stress by DNA damage induces checkpoint kinase-2 (CHK2)-mediated phosphorylation and stabilization of the E2F1 transcription factor, leading to induction of apoptosis by activation of a subset of proapoptotic E2F1 target genes, including Apaf1 and p73. This report characterizes an interaction between the aryl hydrocarbon (Ah) receptor (AHR), a ligand-activated transcription factor, and E2F1 that results in the attenuation of E2F1-mediated apoptosis. In Ahr(-/-) fibroblasts stably transfected with a doxycycline-regulated AHR expression vector, inhibition of AHR expression causes a significant elevation of oxidative stress, gammaH2A.X histone phosphorylation, and E2F1-dependent apoptosis, which can be blocked by small interfering RNA-mediated knockdown of …
Maternal Cocaine Administration In Mice Alters Dna Methylation And Gene Expression In Hippocampal Neurons Of Neonatal And Prepubertal Offspring, Svetlana I. Novikova, Fang He, Jie Bai, Nicholas J. Cutrufello, Michael S. Lidow, Ashiwel S. Undieh
Maternal Cocaine Administration In Mice Alters Dna Methylation And Gene Expression In Hippocampal Neurons Of Neonatal And Prepubertal Offspring, Svetlana I. Novikova, Fang He, Jie Bai, Nicholas J. Cutrufello, Michael S. Lidow, Ashiwel S. Undieh
College of Pharmacy Faculty Papers
Previous studies documented significant behavioral changes in the offspring of cocaine-exposed mothers. We now explore the hypothesis that maternal cocaine exposure could alter the fetal epigenetic machinery sufficiently to cause lasting neurochemical and functional changes in the offspring. Pregnant CD1 mice were administered either saline or 20 mg/kg cocaine twice daily on gestational days 8-19. Male pups from each of ten litters of the cocaine and control groups were analyzed at 3 (P3) or 30 (P30) days postnatum. Global DNA methylation, methylated DNA immunoprecipitation followed by CGI(2) microarray profiling and bisulfite sequencing, as well as quantitative real-time RT-PCR gene expression …
Diverse Antidepressants Increase Cdp-Diacylglycerol Production And Phosphatidylinositide Resynthesis In Depression-Relevant Regions Of The Rat Brain, Kimberly R. Tyeryar, Habiba O.U. Vongtau, Ashiwel S. Undieh
Diverse Antidepressants Increase Cdp-Diacylglycerol Production And Phosphatidylinositide Resynthesis In Depression-Relevant Regions Of The Rat Brain, Kimberly R. Tyeryar, Habiba O.U. Vongtau, Ashiwel S. Undieh
College of Pharmacy Faculty Papers
BACKGROUND: Major depression is a serious mood disorder affecting millions of adults and children worldwide. While the etiopathology of depression remains obscure, antidepressant medications increase synaptic levels of monoamine neurotransmitters in brain regions associated with the disease. Monoamine transmitters activate multiple signaling cascades some of which have been investigated as potential mediators of depression or antidepressant drug action. However, the diacylglycerol arm of phosphoinositide signaling cascades has not been systematically investigated, even though downstream targets of this cascade have been implicated in depression. With the ultimate goal of uncovering the primary postsynaptic actions that may initiate cellular antidepressive signaling, we …
Effect Of Dietary Aluminum Sulfate On Calcium And Phosphorus Metabolism Of Broiler Chicks, Akmed S. Hussein, Austin H. Cantor, Thomas H. Johnson, Robert A. Yokel
Effect Of Dietary Aluminum Sulfate On Calcium And Phosphorus Metabolism Of Broiler Chicks, Akmed S. Hussein, Austin H. Cantor, Thomas H. Johnson, Robert A. Yokel
Animal and Food Sciences Faculty Publications
The effect of dietary aluminum sulfate on Ca and P metabolism was studied using 1-day-oldmale broiler chicks. In Experiment 1, practical diets providing .90% Ca plus .45% available P (Pav), .90% Ca plus .78% Pav, 1.80% Ca plus .45% Pav, or 1.80% Ca plus .90% Pav were fed with 0 or .392% Al as aluminum sulfate for 21 days. The control diet (.90% Caplus .45% Pav) without added A1 was fed to all chicks during Days 22 to 49. In general, Al significantly (Pi), tibia breaking strength, tibia weight, percentage of …
Relationship Of Dietary Aluminum, Phosphorus, And Calcium To Phosphorus And Calcium Metabolism And Growth Performance Of Broiler Chicks, Akmed S. Hussein, Austin H. Cantor, Thomas H. Johnson, Robert A. Yokel
Relationship Of Dietary Aluminum, Phosphorus, And Calcium To Phosphorus And Calcium Metabolism And Growth Performance Of Broiler Chicks, Akmed S. Hussein, Austin H. Cantor, Thomas H. Johnson, Robert A. Yokel
Animal and Food Sciences Faculty Publications
Dietary treatments providing three levels of added Al (0, .196, or .392%) as aluminum sulfate and of available phosphorus (Pav) (.45, .68, or .78%) in a factorial arrangement were administered to day-old chicks in Experiment 1. Plasma inorganic phosphorus (Pi) was significantly (P < .05) elevated by increasing Pav and was decreased by Al. Body weight gain, feed intake, and the gain:feed ratio at Day 21 were significantly decreased by increased concentrations of Al, but were unaffected by the Pav concentrations. Decreases of 39 and 73% in weight gain and of 34 and 66% in feed intake resulted from feeding …