Digital Commons Network^™

Mouse Rc/Btb2, A Member Of The Rcc1 Superfamily, Localizes To Spermatid Acrosomal Vesicles, Jiannan Wang, Maria E. Teves, Xuening Shen, David R. Nagarkatti-Gude, Rex A. Hess, Scott C. Henderson, Jerome F. Strauss Iii, Zhibing Zhang

Obstetrics and Gynecology Publications

Mouse RC/BTB2 is an unstudied protein of the RCC1 (Regulator of Chromosome Condensation) superfamily. Because of the significant remodeling of chromatin that occurs during spermiogenesis, we characterized the expression and localization of mouse RC/BTB2 in the testis and male germ cells. The Rc/btb2 gene yields two major transcripts: 2.3 kb Rc/btb2-s, present in most somatic tissues examined; and 2.5 kb Rc/btb2-t, which contains a unique non-translated exon in its 5′-UTR that is only detected in the testis. During the first wave of spermatogenesis, Rc/btb2-t mRNA is expressed from day 8 after birth, reaching highest levels of expression at day …

Menorah Review (No. 77, Summer/Fall, 2012)

Menorah Review

A Golden Poet of Spain's Golden Age -- Beyond the Second Coming -- Books in Brief: New and Notable -- Cantorial Challenges -- Jewishness in the World: A Chabad Definition -- Moreshet - From the Classics: A 1797 Wedding -- Painful Presence: Jews in Russian Music -- Zachor: Sicut Judaeis ("And Thus to the Jews")

Virginia Commonwealth University Graduate And Professional Programs Bulletin Courses [2012], Virginia Commonwealth University

VCU Bulletins

Listing of professional and graduate courses for 2012-2013

Identification And Structural Characterization Of A New Three-Finger Toxin Hemachatoxin From Hemachatus Haemachatus Venom, Vallerinteavide Mavelli Girish, Sundramurthy Kumar, Lissa Joseph, Chacko Jobichen, R. Manjunatha Kini, J. Sivaraman

Biochemistry and Molecular Biology Publications

Snake venoms are rich sources of biologically active proteins and polypeptides. Three-finger toxins are non-enzymatic proteins present in elapid (cobras, kraits, mambas and sea snakes) and colubrid venoms. These proteins contain four conserved disulfide bonds in the core to maintain the three-finger folds. Although all three-finger toxins have similar fold, their biological activities are different. A new three-finger toxin (hemachatoxin) was isolated from Hemachatus haemachatus (Ringhals cobra) venom. Its amino acid sequence was elucidated, and crystal structure was determined at 2.43 Å resolution. The overall fold is similar to other three-finger toxins. The structure and sequence analysis revealed that the …

Metabolic Rate Regulates L1 Longevity In C. Elegans, Inhwan Lee, Amber Hendrix, Jeongho Kim, Jennifer Yoshimoto, Young-Jai You

Biochemistry and Molecular Biology Publications

Animals have to cope with starvation. The molecular mechanisms by which animals survive long-term starvation, however, are not clearly understood. When they hatch without food, C. elegans arrests development at the first larval stage (L1) and survives more than two weeks. Here we show that the survival span of arrested L1s, which we call L1 longevity, is a starvation response regulated by metabolic rate during starvation. A high rate of metabolism shortens the L1 survival span, whereas a low rate of metabolism lengthens it. The longer worms are starved, the slower they grow once they are fed, suggesting that L1 …

Early Hearing-Impairment Results In Crossmodal Reorganization Of Ferret Core Auditory Cortex, M. Alex Meredith, Brian L. Allman

Anatomy and Neurobiology Publications

Numerous investigations of cortical crossmodal plasticity, most often in congenital or early-deaf subjects, have indicated that secondary auditory cortical areas reorganize to exhibit visual responsiveness while the core auditory regions are largely spared. However, a recent study of adult-deafened ferrets demonstrated that core auditory cortex was reorganized by the somatosensory modality. Because adult animals have matured beyond their critical period of sensory development and plasticity, it was not known if adult-deafening and early-deafening would generate the same crossmodal results. The present study used young, ototoxically-lesioned ferrets () that, after maturation (avg. = 173 days old), showed significant hearing deficits (avg. …

Optogenetic Stimulation Of The Corticothalamic Pathway Affects Relay Cells And Gabaergic Neurons Differently In The Mouse Visual Thalamus, Chris W. D. Jurgens, Karen A. Bell, A. Rory Mcquiston, William Guido

Anatomy and Neurobiology Publications

The dorsal lateral geniculate nucleus (dLGN) serves as the primary conduit of retinal information to visual cortex. In addition to retinal input, dLGN receives a large feedback projection from layer VI of visual cortex. Such input modulates thalamic signal transmission in different ways that range from gain control to synchronizing network activity in a stimulus-specific manner. However, the mechanisms underlying such modulation have been difficult to study, in part because of the complex circuitry and diverse cell types this pathway innervates. To address this and overcome some of the technical limitations inherent in studying the corticothalamic (CT) pathway, we adopted …

Virginia Commonwealth University Undergraduate Bulletin Courses [2012], Virginia Commonwealth University

VCU Bulletins

Listing of undergraduate courses for 2012-2013.

Infantile Spasms (West Syndrome): Update And Resources For Pediatricians And Providers To Share With Parents, James W. Wheless, Patricia A. Gibson, Kari Luther Rosbeck, Maria Hardin, Christine O’Dell, Vicky Whittemore, John M. Pellock

Neurology Publications

Background Infantile spasms (IS; West syndrome) is a severe form of encephalopathy that typically affects infants younger than 2 years old. Pediatricians, pediatric neurologists, and other pediatric health care providers are all potentially key early contacts for families who have an infant with IS. The objective of this article is to assist pediatric health care providers in the detection of the disease and in the counseling and guidance of families who have an infant with IS.

Methods Treatment guidelines, consensus reports, and original research studies are reviewed to provide an update regarding the diagnosis and treatment of infants with IS. …

Prey Responses To Predator Chemical Cues: Disentangling The Importance Of The Number And Biomass Of Prey Consumed, Michael W. Mccoy, Justin C. Touchon, Tobias Landberg, Karen M. Warkentin, James R. Vonesh

Biology Publications

To effectively balance investment in predator defenses versus other traits, organisms must accurately assess predation risk. Chemical cues caused by predation events are indicators of risk for prey in a wide variety of systems, but the relationship between how prey perceive risk in relation to the amount of prey consumed by predators is poorly understood. While per capita predation rate is often used as the metric of relative risk, studies aimed at quantifying predator-induced defenses commonly control biomass of prey consumed as the metric of risk. However, biomass consumed can change by altering either the number or size of prey …

A Racial Impact Analysis Of Hb 462, Grace E. Harris Leadership Institute, Virginia Commonwealth University, Daphne Bryan, William Randolph, Tarvaris Mccoy

L. Douglas Wilder School of Government and Public Affairs Publications

The adoption of House Bill 462 into law brings forth questions about the probable impact on the physical, mental, emotional and financial well-being of the women in Virginia. In particular, analysis of its effect on the minority and underserved female population is required. Understanding the origin of this new legislation and the thinking behind its proposal and subsequent adoption dictates an endeavor into the backgrounds and intended goals of its sponsors and supporters. Proponents of HB 462 were unresponsive to requests for an interview to expound on their perspective about the importance of the legislation. This precipitated the use of …

Poictesme: A Student Anthology Of Literature And Art (2012)

Pwatem (Poictesme), 2006-

Poictesme (now Pwatem) is an anthology of literature and art from undergraduate students at Virginia Commonwealth University. It publishes poetry, prose and art of all kinds from talented undergraduate students of all majors.

Crystal Structures Of Human Pyridoxal Kinase In Complex With The Neurotoxins, Ginkgotoxin And Theophylline: Insights Into Pyridoxal Kinase Inhibition, Amit Gandhi, Jigar V. Desai, Mohini S. Ghatge, Martino L. Di Salvo, Stefano Di Biase, Richmond Danso-Danquah, Faik N. Musayev, Roberto Contestabile, Verne Schirch, Martin A. Safo

Medicinal Chemistry Publications

Several drugs and natural compounds are known to be highly neurotoxic, triggering epileptic convulsions or seizures, and causing headaches, agitations, as well as other neuronal symptoms. The neurotoxic effects of some of these compounds, including theophylline and ginkgotoxin, have been traced to their inhibitory activity against human pyridoxal kinase (hPL kinase), resulting in deficiency of the active cofactor form of vitamin B6, pyridoxal 5′-phosphate (PLP). Pyridoxal (PL), an inactive form of vitamin B6 is converted to PLP by PL kinase. PLP is the B6 vitamer required as a cofactor for over 160 enzymatic activities essential in primary and secondary metabolism. …

Discovery Of Prostamide F2Α And Its Role In Inflammatory Pain And Dorsal Horn Nociceptive Neuron Hyperexcitability, Luisa Gatta, Fabiana Piscitelli, Catia Giordano, Serana Boccella, Aron H. Lichtman, Sebatino Maione, Vincenzo Di Marzo

Pharmacology and Toxicology Publications

It was suggested that endocannabinoids are metabolized by cyclooxygenase (COX)-2 in the spinal cord of rats with kaolin/λ-carrageenan-induced knee inflammation, and that this mechanism contributes to the analgesic effects of COX-2 inhibitors in this experimental model. We report the development of a specific method for the identification of endocannabinoid COX-2 metabolites, its application to measure the levels of these compounds in tissues, and the finding of prostamide F2α (PMF2α) in mice with knee inflammation. Whereas the levels of spinal endocannabinoids were not significantly altered by kaolin/λ-carrageenan-induced knee inflammation, those of the COX-2 metabolite of AEA, PMF2α, were strongly elevated. The …

The Interleukin 3 Gene (Il3) Contributes To Human Brain Volume Variation By Regulating Proliferation And Survival Of Neural Progenitors, Xiao-Jian Luo, Ming Li, Liang Huang, Khwangsik Nho, Min Deng, Qiang Chen, Daniel R. Weinberger, Alejandro A. Vasquez, Mark Rijpkema, Venkata S. Mattay, Andrew J. Saykin, Li Shen, Guillen Fernandez, Barbara Franke, Jing-Chun Chen, Xiang-Ning Chen, Jin-Kai Wang, Xiao Xiao, Xue-Bin Qi, Kun Xiang, Ying-Mei Peng, Xiang-Yu Cao, Yi Li, Xiao-Dong Shi, Lin Gan, Bing Su

Psychiatry Publications

One of the most significant evolutionary changes underlying the highly developed cognitive abilities of humans is the greatly enlarged brain volume. In addition to being far greater than in most other species, the volume of the human brain exhibits extensive variation and distinct sexual dimorphism in the general population. However, little is known about the genetic mechanisms underlying normal variation as well as the observed sex difference in human brain volume. Here we show that interleukin-3 (IL3) is strongly associated with brain volume variation in four genetically divergent populations. We identified a sequence polymorphism (rs31480) in the IL3 promoter which …

A Comparison Of Two Distinct Murine Macrophage Gene Expression Profiles In Response To Leishmania Amazonensis Infection, Christian M. Probst, Rodrigo A. Silva, Juliana P.B. Menezes, Tais F. Almeida, Ivana N. Gomes, Andréia C. Dallabona, Luiz S. Ozaki, Gregory A. Buck, Daniel P. Pavoni, Marco A. Krieger, Patrícia S.T. Veras

Study of Biological Complexity Publications

Background

The experimental murine model of leishmaniasis has been widely used to characterize the immune response against Leishmania. CBA mice develop severe lesions, while C57BL/6 present small chronic lesions under L. amazonensis infection. Employing a transcriptomic approach combined with biological network analysis, the gene expression profiles of C57BL/6 and CBA macrophages, before and after L. amazonensis infection in vitro, were compared. These strains were selected due to their different degrees of susceptibility to this parasite.

Results

The genes expressed by C57BL/6 and CBA macrophages, before and after infection, differ greatly, both with respect to absolute number as well as …

Molecular Profiles Of Hcv Cirrhotic Tissues Derived In A Panel Of Markers With Clinical Utility For Hepatocellular Carcinoma Surveillance, Ricardo Gehrau, Kellie Archer, Valeria Mas, Daniel Maluf

Biostatistics Publications

Background

Early hepatocellular carcinoma (HCC) detection is difficult because low accuracy of surveillance tests. Genome-wide analyses were performed using HCV-cirrhosis with HCC to identify predictive signatures.

Methodology/Principal Findings

Cirrhotic liver tissue was collected from 107 HCV-infected patients with diagnosis of HCC at pre-transplantation and confirmed in explanted livers. Study groups included: 1) microarray hybridization set (n = 80) including patients without (woHCC = 45) and with (wHCC = 24) HCC, and with incidental HCC (iHCC = 11); 2) independent validation set (n = 27; woHCC = 16, wHCC = 11). Pairwise comparisons were performed using moderated t-test. FDR<1% was considered significant. L1-penalized logistic regression model was fit for woHCC and wHCC microarrays, and tested against iHCC. Prediction model genes were validated in independent set by qPCR. The genomic profile was associated with genetic disorders and cancer focused on gene expression, cell cycle and cell death. Molecular profile analysis revealed cell cycle progression and arrest at G2/M, but progressing to mitosis; unregulated DNA damage check-points, and apoptosis. The prediction model included 17 molecules demonstrated 98.6% of accuracy and correctly classified 6 out of 11 undiagnosed iHCC cases. The best model performed even better in the additional independent set.

Conclusions/Significances

The …

Amendment (2012)

Amendment, 2004-

Amendment is a VCU student-produced progressive literature and art journal that provides a platform for students to promote equality, tolerance, and social progression through artistic expression.

Virginia Dental Journal (Vol. 89, No. 2, 2012)

Virginia Dental Journal

No abstract provided.

Interaction Between Mu And Delta Opioid Receptor Agonists In An Assay Of Capsaicin-Induced Thermal Allodynia In Rhesus Monkeys, S. Stevens Negus, Ember Morrissey, John E. Folk, Kenner C. Rice

Pharmacology and Toxicology Publications

Delta opioid agonists enhance antinociceptive effects of mu-opioid agonists in many preclinical assays of acute nociception, but delta/mu interactions in preclinical models of inflammation-associated pain have not been examined. This study examined interactions between the delta agonist SNC80 [(+)-4-[(αR)-α-((2S,5R)-4-allyl-2,5-dimethyl-1-piperazinyl)-3-methoxybenzyl]-N,N-diethylbenzamide] and the mu agonist analgesics methadone, morphine, and nalbuphine in an assay of capsaicin-induced thermal allodynia in rhesus monkeys. Thermal allodynia was produced by topical application of capsaicin to the tail. Antiallodynic effects of methadone, morphine, and nalbuphine were evaluated alone or in combination with fixed proportions of SNC80 identical to proportions previously shown to enhance acute thermal antinociceptive effects of …

Mdan-21: A Bivalent Opioid Ligand Containing Mu-Agonist And Delta-Antagonist Pharmacophores And Its Effects In Rhesus Monkeys, Mario D. Aceto, Louis S. Harris, S. Stevens Negus, Matthew L. Banks, Larry D. Hughes, Eyup Akgun, Philip S. Portoghese

Pharmacology and Toxicology Publications

MDAN-21, , a bivalent opioid ligand containing a mu-opioid receptor agonist (derived from oxymorphone) linked to the delta-opioid receptor antagonist (related to naltrindole) by a spacer of 21 atoms, was reported to have potent analgesic properties in mice. Tolerance, physical dependence, and conditioned place preference were not evident in that species. The finding that bivalent ligands in this series, with spacers 19 atoms or greater, were devoid of tolerance and dependence led to the proposal that MDAN-21 targets heteromeric mu-delta-opioid receptors. The present study focused on its effects in nonhuman primates (Macaca mulatta), a species with a physiology and behavioral …

Acid Sphingomyelinase Gene Knockout Ameliorates Hyperhomocysteinemic Glomerular Injury In Mice Lacking Cystathionine-Β-Synthase, Krishna M. Boini, Min Xia, Justine M. Abais, Ming Xu, Cai-Xia Li, Pin-Lan Li

Pharmacology and Toxicology Publications

Acid sphingomyelinase (ASM) has been implicated in the development of hyperhomocysteinemia (hHcys)-induced glomerular oxidative stress and injury. However, it remains unknown whether genetically engineering of ASM gene produces beneficial or detrimental action on hHcys-induced glomerular injury. The present study generated and characterized the mice lacking cystathionine β-synthase (Cbs) and Asm mouse gene by cross breeding Cbs+/− and Asm+/− mice. Given that the homozygotes of Cbs−/−/Asm−/− mice could not survive for 3 weeks. Cbs+/−/Asm+/+, Cbs+/−/Asm+/− and Cbs+/−/Asm−/− as well as their Cbs wild type littermates were used to study the role of Asm−/− under a background of Cbs+/− with hHcys. HPLC …

Activation Of Extracellular Signal-Regulated Protein Kinase 5 Is Essential For Cystitis- And Nerve Growth Factor-Induced Calcitonin Gene-Related Peptide Expression In Sensory Neurons, Sharon Yu, Chun-Mei Xia, Li-Ya Qiao

Physiology and Biophysics Publications and Presentations

Background Cystitis causes considerable neuronal plasticity in the primary afferent pathways. The molecular mechanism and signal transduction underlying cross talk between the inflamed urinary bladder and sensory sensitization has not been investigated.

Results In a rat cystitis model induced by cyclophosphamide (CYP) for 48 h, the mRNA and protein levels of the excitatory neurotransmitter calcitonin gene-related peptide (CGRP) are increased in the L6 dorsal root ganglia (DRG) in response to bladder inflammation. Cystitis-induced CGRP expression in L6 DRG is triggered by endogenous nerve growth factor (NGF) because neutralization of NGF with a specific NGF antibody reverses CGRP up-regulation during cystitis. …

Mekk1-Mkk4-Jnk-Ap1 Pathway Negatively Regulates Rgs4 Expression In Colonic Smooth Muscle Cells, Yonggang Zhang, Fang Li, Shu Liu, Hong Wang, Sunila Mahavadi, Karnam S. Murthy, Kamel Khalili, Wenhui Hu

Physiology and Biophysics Publications and Presentations

Background

Regulator of G-protein Signaling 4 (RGS4) plays an important role in regulating smooth muscle contraction, cardiac development, neural plasticity and psychiatric disorder. However, the underlying regulatory mechanisms remain elusive. Our recent studies have shown that upregulation of Rgs4 by interleukin (IL)-1β is mediated by the activation of NFκB signaling and modulated by extracellular signal-regulated kinases, p38 mitogen-activated protein kinase, and phosphoinositide-3 kinase. Here we investigate the effect of the c-Jun N-terminal kinase (JNK) pathway on Rgs4 expression in rabbit colonic smooth muscle cells.

Methodology/Principal Findings

Cultured cells at first passage were treated with or without IL-1β …

Up-Regulation Of Brain-Derived Neurotrophic Factor In Primary Afferent Pathway Regulates Colon-To-Bladder Cross-Sensitization In Rat, Chun-Mei Xia, Melisa A. Gulick, Sharon Yu, John R. Grider, Karnam S. Murthy, John K. Kuemmerle, Hamid I. Akbarali

Physiology and Biophysics Publications and Presentations

Background In humans, inflammation of either the urinary bladder or the distal colon often results in sensory cross-sensitization between these organs. Limited information is known about the mechanisms underlying this clinical syndrome. Studies with animal models have demonstrated that activation of primary afferent pathways may have a role in mediating viscero-visceral cross-organ sensitization.

Methods Colonic inflammation was induced by a single dose of tri-nitrobenzene sulfonic acid (TNBS) instilled intracolonically. The histology of the colon and the urinary bladder was examined by hematoxylin and eosin (H&E) stain. The protein expression of transient receptor potential (TRP) ion channel of the vanilloid type …

Material Meaning, Anne Jordan

Theses and Dissertations

The synthesis of old and new, analog and digital, and hand- and computer-based methods provides designers with an opportunity to work beyond the constraints of the computer and take advantage of the aesthetic effects that actual materials bring to visual communication. Designers who choose to actively participate in their process – bringing the aesthetic effects of working materially into the realm of the digital – will likely learn to reject an approach that relies too heavily on passive digital tools. Active participation in the design process can extend our creative vocabulary and humanize visual communication.

Hyphenated Artists: A Body Of Potential, Laura Reeder

Journal of Social Theory in Art Education

The author of this article, an art teacher, arts education advocate, teaching artist, pre-service art teacher supervisor and instructor confronts “either/or” professional identities in arts education. Multi-faceted artist/scholar/educator/ learner/advocate/personas are “unfenced” in order to navigate spaces of artistic, educational, and cultural production without having to pause for identification at borders. In this form, pedagogies for inventive social change emerge. Dialogue among fields of artists and educators links either/or, artist/teacher qualities in holistic and interdisciplinary descriptions such as artist-teacher, teaching-artist, etc. The hyphenated association has become postmodern shorthand for inclusive “both/and” professional identities that in the 21st century may be limiting …

Reasserting Humanity Through The Liberatory Gaze, Melissa Crum

Journal of Social Theory in Art Education

The act of critically looking can be a method used to consider alternative ways of conceptualizing marginalized cultures and ethnicities. By engaging in a series of inquiries about the subject of an image, the spectator can form a more comprehensive representation of the subject, thus preparing post-secondary students to discuss and interpret visual culture. From the perspective of an African-American female artist and educator’s travels to Brazil, this work proposes that a self-reflective educator’s personal narratives and insight can assist in creating an arts-based critically-thinking learning atmosphere. Such an atmosphere encourages students to move beyond the realms of their cultural …

(De)Fencing The Cultural Commons Through A (De)Constructive Media Art Curriculum, Steven Ciampaglia

Journal of Social Theory in Art Education

Rampant consolidation in the media industry has led to an ever-increasing push to extend the breadth and scope of copyright law. A deliberate and systematic effort to restrict access to cultural texts that were previously accessible has led to a creative climate that is increasingly intimidating to young artists. The personal computer provides students the ability to re-open these texts and reclaim their right to fairly use the cultural artifacts of their surroundings as building blocks of expression. The personal computer can deconstruct closed media texts into malleable parts of visual language that students can reconstruct into new texts. These …

De(Fencing) With Youth: Moving From The Margins To The Center, Ann E. Tobey, Kate Jellinghaus

Journal of Social Theory in Art Education

Practices that combine the positive power of human relationships with art making can serve to De(fence): “create, innovate, reshape spaces, opportunities, or works that engage people or (and) bring us and them from the margins to the center” (JSTAE, call for papers, volume 32). In this paper, we explore ideas, techniques, and strategies used to implement four collaborative art projects with teenage youth. These projects aim to create a safe and generative context within which collaborative art-making practice can put youth and their ideas at the center of the process. Projects include an exploration of school climate utilizing sculpture in …