Medicine and Health Sciences Commons^™

Novel Ceramic Bone Replacement Material Ceraball® Seeded With Human Mesenchymal Stem Cells, Timothy Douglas, Qin Liu, Andreas Humpe, Jörg Wiltfang, Sureshan Sivananthan, Patrick Warnke

Qin Liu

Objectives: Hydroxyapatite (HA) and tricalcium phosphate (TCP) are two very common ceramic materials for bone replacement. A recently developed material for bone replacement is CeraBall®, which is a mixed HA-TCP scaffold available as porous spherical scaffolds of diameter 4 and 6 mm. Before their use as bone replacement materials in vivo, in vitro testing of these scaffolds is necessary. The goal of this study was to characterise 4 and 6 mm CeraBall® scaffolds in vitro with a view to their future use as bone replacement materials. Materials and methods: The proliferation of human mesenchymal stromal cells (hMSCs) seeded on CeraBall® …

2012 Año Europeo Del Envejecimiento Activo Y La Solidaridad Intergeneracional Una Mirada Multidimensional A Un Fenómeno Global, Diego A. Bernardini

Diego Bernardini MD, PhD

No abstract provided.

Microrna-138 Regulates Hypoxia-Induced Endothelial Cell Dysfunction By Targeting S100a1., Anagha Sen, Shumei Ren, Carolin Lerchenmüller, Jianxin Sun, Norbert Weiss, Patrick Most, Karsten Peppel

Center for Translational Medicine Faculty Papers

The Ca(2+) sensor S100A1 is essential for proper endothelial cell (EC) nitric oxide (NO) synthase (eNOS) activation. S100A1 levels are greatly reduced in primary human microvascular ECs subjected to hypoxia, rendering them dysfunctional. However mechanisms that regulate S100A1 levels in ECs are unknown. Here we show that ECs transfected with a S100A1-3' untranslated region (UTR) luciferase reporter construct display significantly reduced gene expression when subjected to low oxygen levels or chemical hypoxia. Bioinformatic analysis suggested that microRNA -138 (MiR-138) could target the 3'UTR of S100A1. Patients with critical limb ischemia (CLI) or mice subjected to femoral artery resection (FAR) displayed …

Disruption Of Drosophila Melanogaster Lipid Metabolism Genes Causes Tissue Overgrowth Associated With Altered Developmental Signaling., Takeshi Sasamura, Kenji Matsuno, Mark E Fortini

Department of Biochemistry and Molecular Biology Faculty Papers

Developmental patterning requires the precise interplay of numerous intercellular signaling pathways to ensure that cells are properly specified during tissue formation and organogenesis. The spatiotemporal function of many developmental pathways is strongly influenced by the biosynthesis and intracellular trafficking of signaling components. Receptors and ligands must be trafficked to the cell surface where they interact, and their subsequent endocytic internalization and endosomal trafficking is critical for both signal propagation and its down-modulation. In a forward genetic screen for mutations that alter intracellular Notch receptor trafficking in Drosophila melanogaster, we recovered mutants that disrupt genes encoding serine palmitoyltransferase and acetyl-CoA carboxylase. …

Collagen Content In Skin And Internal Organs Of The Tight Skin Mouse: An Animal Model Of Scleroderma., Jayanthi Manne, Marina Markova, Linda D Siracusa, Sergio A Jimenez

Department of Microbiology and Immunology Faculty Papers

The Tight Skin mouse is a genetically induced animal model of tissue fibrosis caused by a large in-frame mutation in the gene encoding fibrillin-1 (Fbn-1). We examined the influence of gender on the collagen content of tissues in C57BL/6J wild type (+/+) and mutant Tight Skin (Tsk/+) mice employing hydroxyproline assays. Tissue sections were stained with Masson's trichrome to identify collagen in situ. Adult Tsk/+ mice skin contains ~15% more collagen, on average, than skin from +/+ mice of the same gender. The heart of Tsk/+ males had significantly more collagen than that of +/+ males. No significant gender differences …

Treatment Of Acute Aortic Dissection At A Community Hospital: A 10 Year Review Of Outcomes., Timothy Misselbeck Md, Stephen Deturk, Matthew Wilson, Theodore Phillips Md, Michael Szwerc Md, Sanjay Mehta Md, Gary Szydlowski Md, Raymond Singer Md, James Wu Md

James K. Wu, M.D.

No abstract provided.

Critical Assessment Of Outcomes In Acute Aortic Dissection (Type A) At A Community Hospital: A 10 Year Review, Tim S. Misselbeck Md, James K. Wu Md, Stephen Deturk Ba, Michael F. Szwerc Md, Sanjay M. Mehta Md, Theodore G. Phillips Md, Gary W. Szydlowski Md, Raymond L. Singer Md

James K. Wu, M.D.

No abstract provided.

Conventional Isolated Aortic Valve Replacement In Octogenarians: A 10-Year Single Center Experience, James K. Wu Md, Justin D. Roberts Do, Gregory S. Troutman Bs, Michael J. Weiss Mph, Sanjay M. Mehta Md, Theodore G. Phillips Md, Michael F. Szwerc Md, Gary W. Szydlowski Md, Tim S. Misselbeck Md, Raymond L. Singer Md

James K. Wu, M.D.

No abstract provided.

De-Branching Of The Aortic Arch During Thoracic Endovascular Aortic Repair, James K. Wu Md, Caitlin O'Connor Bs, Tim S. Misselbeck Md, Theodore G. Phillips Md

James K. Wu, M.D.

No abstract provided.

Critical Assessment Of Outcomes In Acute Aortic Dissection (Type A) At A Community Hospital: A 10 Year Review, Tim S. Misselbeck Md, James K. Wu Md, Stephen Deturk Ba, Michael F. Szwerc Md, Sanjay M. Mehta Md, Theodore G. Phillips Md, Gary W. Szydlowski Md, Raymond L. Singer Md

James K Wu MD

No abstract provided.

Treatment Of Acute Aortic Dissection At A Community Hospital: A 10 Year Review Of Outcomes., Timothy Misselbeck Md, Stephen Deturk, Matthew Wilson, Theodore Phillips Md, Michael Szwerc Md, Sanjay Mehta Md, Gary Szydlowski Md, Raymond Singer Md, James Wu Md

James K Wu MD

No abstract provided.

Risk Factors Affecting Outcomes In Patients Undergoing Hypothermic Circulatory Arrest During Aortic Surgeries, Bree Ann Young, James K. Wu Md, Martin E. Matsumura Md, Tim S. Misselbeck Md, Sanjay M. Mehta Md, Theodore G. Phillips Md, Michael F. Szwerc Md, Gary W. Szydlowski Md, Raymond L. Singer Md

James K. Wu, M.D.

No abstract provided.

Conventional Isolated Aortic Valve Replacement In Octogenarians: A 10-Year Single Center Experience, James K. Wu Md, Justin D. Roberts Do, Gregory S. Troutman Bs, Michael J. Weiss Mph, Sanjay M. Mehta Md, Theodore G. Phillips Md, Michael F. Szwerc Md, Gary W. Szydlowski Md, Tim S. Misselbeck Md, Raymond L. Singer Md

James K Wu MD

No abstract provided.

Successful Long-Term Extracorporeal Cardiopulmonary Membrane Oxygenation Without Anti-Coagulation, Janissa Nair, Dorothea T. Watson Do, Rita Pechulis Md, Fccp, Nicholas M. Rini Pa-C, Tim S. Misselbeck Md, Kenneth Miller Rrt, James K. Wu Md

James K. Wu, M.D.

No abstract provided.

Causes Of Death In Surgically Treated Patients With Type A Aortic Dissection - A Ten Year Review, James K. Wu Md, Eilizabeth Depaolo Bs, Theodore G. Phillips Md, Tim S. Misselbeck Md

James K. Wu, M.D.

No abstract provided.

Fn14•Trail Effectively Inhibits Hepatocellular Carcinoma Growth., Alexandra Aronin, Shira Amsili, Tatyana B Prigozhina, Kobi Tzdaka, Jacob Rachmilewitz, Noam Shani, Mark L Tykocinski, Michal Dranitzki Elhalel

Department of Medical Genetics Faculty Papers

BACKGROUND: New strategies for the treatment of hepatocellular carcinoma (HCC) are needed, given that currently available chemotherapeutics are inefficient. Since tumor growth reflects the net balance between pro-proliferative and death signaling, agents shifting the equilibrium toward the latter are of considerable interest. The TWEAK:Fn14 signaling axis promotes tumor cell proliferation and tumor angiogenesis, while TRAIL:TRAIL-receptor (TRAIL-R) interactions selectively induce apoptosis in malignant cells. Fn14•TRAIL, a fusion protein bridging these two pathways, has the potential to inhibit tumor growth, by interfering with TWEAK:Fn14 signaling, while at the same time enforcing TRAIL:TRAIL-R-mediated apoptosis. Consequently, Fn14•TRAIL's capacity to inhibit HCC growth was tested. …

The Drosophila Eve Insulator Homie Promotes Eve Expression And Protects The Adjacent Gene From Repression By Polycomb Spreading., Miki Fujioka, Guizhi Sun, James B Jaynes

Department of Biochemistry and Molecular Biology Faculty Papers

Insulators can block the action of enhancers on promoters and the spreading of repressive chromatin, as well as facilitating specific enhancer-promoter interactions. However, recent studies have called into question whether the activities ascribed to insulators in model transgene assays actually reflect their functions in the genome. The Drosophila even skipped (eve) gene is a Polycomb (Pc) domain with a Pc-group response element (PRE) at one end, flanked by an insulator, an arrangement also seen in other genes. Here, we show that this insulator has three major functions. It blocks the spreading of the eve Pc domain, preventing repression of the …

Perspectives Of Older Adults On Co-Management Of Low Back Pain By Doctors Of Chiropractic And Family Medicine Physicians: A Focus Group Study., Kevin J Lyons, Stacie A Salsbury, Maria A Hondras, Mark E Jones, Andrew A Andresen, Christine M Goertz

Department of Medical Genetics Faculty Papers

BACKGROUND: While older adults may seek care for low back pain (LBP) from both medical doctors (MDs) and doctors of chiropractic (DCs), co-management between these providers is uncommon. The purposes of this study were to describe the preferences of older adults for LBP co-management by MDs and DCs and to identify their concerns for receiving care under such a treatment model.

METHODS: We conducted 10 focus groups with 48 older adults who received LBP care in the past year. Interviews explored participants' care seeking experiences, co-management preferences, and perceived challenges to successful implementation of a MD-DC co-management model. We analyzed …

Leukemia-Associated Rhogef (Larg) Is A Novel Rhogef In Cytokinesis And Required For The Proper Completion Of Abscission., Matthew K Martz, Elda Grabocka, Neil Beeharry, Timothy J Yen, Philip B Wedegaertner

Department of Biochemistry and Molecular Biology Faculty Papers

Proper completion of mitosis requires the concerted effort of multiple RhoGEFs. Here we show that leukemia-associated RhoGEF (LARG), a RhoA-specific RGS-RhoGEF, is required for abscission, the final stage of cytokinesis, in which the intercellular membrane is cleaved between daughter cells. LARG colocalizes with α-tubulin at the spindle poles before localizing to the central spindle. During cytokinesis, LARG is condensed in the midbody, where it colocalizes with RhoA. HeLa cells depleted of LARG display apoptosis during cytokinesis with unresolved intercellular bridges, and rescue experiments show that expression of small interfering RNA-resistant LARG prevents this apoptosis. Moreover, live cell imaging of LARG-depleted …

G Protein-Coupled Receptor Kinase 2 (Grk2) Is Localized To Centrosomes And Mediates Epidermal Growth Factor-Promoted Centrosomal Separation., Christopher H So, Allison Michal, Konstantin E Komolov, Jiansong Luo, Jeffrey L Benovic

Department of Biochemistry and Molecular Biology Faculty Papers

G protein-coupled receptor kinases (GRKs) play a central role in regulating receptor signaling, but recent studies suggest a broader role in modulating normal cellular functions. For example, GRK5 has been shown to localize to centrosomes and regulate microtubule nucleation and cell cycle progression. Here we demonstrate that GRK2 is also localized to centrosomes, although it has no role in centrosome duplication or microtubule nucleation. Of interest, knockdown of GRK2 inhibits epidermal growth factor receptor (EGFR)-mediated separation of duplicated centrosomes. This EGFR/GRK2-mediated process depends on the protein kinases mammalian STE20-like kinase 2 (Mst2) and Nek2A but does not involve polo-like kinase …

Presence Of Virus Neutralizing Antibodies In Cerebral Spinal Fluid Correlates With Non-Lethal Rabies In Dogs., Clement W Gnanadurai, Ming Zhou, Wenqi He, Christina M Leyson, Chien-Tsun Huang, Gregory Salyards, Stephen B Harvey, Zhenhai Chen, Biao He, Yang Yang, D C Hooper, Berhnard Dietzchold, Zhen F Fu

Department of Cancer Biology Faculty Papers

BACKGROUND: Rabies is traditionally considered a uniformly fatal disease after onset of clinical manifestations. However, increasing evidence indicates that non-lethal infection as well as recovery from flaccid paralysis and encephalitis occurs in laboratory animals as well as humans.

METHODOLOGY/PRINCIPAL FINDINGS: Non-lethal rabies infection in dogs experimentally infected with wild type dog rabies virus (RABV, wt DRV-Mexico) correlates with the presence of high level of virus neutralizing antibodies (VNA) in the cerebral spinal fluid (CSF) and mild immune cell accumulation in the central nervous system (CNS). By contrast, dogs that succumbed to rabies showed only little or no VNA in the …

Successful Long-Term Extracorporeal Cardiopulmonary Membrane Oxygenation Without Anti-Coagulation, Janissa Nair, Dorothea T. Watson Do, Rita Pechulis Md, Fccp, Nicholas M. Rini Pa-C, Timothy S. Misselbeck, Kenneth Miller Rrt, James K. Wu Md

Department of Surgery

No abstract provided.

Spinal Anesthesia: Should Everyone Receive A Urinary Catheter?: A Randomized, Prospective Study Of Patients Undergoing Total Hip Arthroplasty., Adam G Miller, James Mckenzie, Max Greenky, Erica Shaw, Kishor Gandhi, William J Hozack, Javad Parvizi

Rothman Institute Faculty Papers

BACKGROUND: The objective of this randomized prospective study was to determine whether a urinary catheter is necessary for all patients undergoing total hip arthroplasty under spinal anesthesia.

METHODS: Consecutive patients undergoing total hip arthroplasty under spinal anesthesia were randomized to treatment with or without insertion of an indwelling urinary catheter. All patients received spinal anesthesia with 15 to 30 mg of 0.5% bupivacaine. The catheter group was subjected to a standard postoperative protocol, with removal of the indwelling catheter within forty-eight hours postoperatively. The experimental group was monitored for urinary retention and, if necessary, had straight catheterization up to two …

Intracellular Reprogramming Of Expression, Glycosylation, And Function Of A Plant-Derived Antiviral Therapeutic Monoclonal Antibody., Jeong-Hwan Lee, Da-Young Park, Kyung-Jin Lee, Young-Kwan Kim, Yang-Kang So, Jae-Sung Ryu, Seung-Han Oh, Yeon-Soo Han, Kinarm Ko, Young-Kug Choo, Sung-Joo Park, Robert Brodzik, Kyoung-Ki Lee, Doo-Byoung Oh, Kyung-A Hwang, Hilary Koprowski, Yong Seong Lee, Kisung Ko

Department of Cancer Biology Faculty Papers

Plant genetic engineering, which has led to the production of plant-derived monoclonal antibodies (mAb(P)s), provides a safe and economically effective alternative to conventional antibody expression methods. In this study, the expression levels and biological properties of the anti-rabies virus mAb(P) SO57 with or without an endoplasmic reticulum (ER)-retention peptide signal (Lys-Asp-Glu-Leu; KDEL) in transgenic tobacco plants (Nicotiana tabacum) were analyzed. The expression levels of mAb(P) SO57 with KDEL (mAb(P)K) were significantly higher than those of mAb(P) SO57 without KDEL (mAb(P)) regardless of the transcription level. The Fc domains of both purified mAb(P) and mAb(P)K and hybridoma-derived mAb (mAb(H)) had similar …

Insulin Promotes Glucose Consumption Via Regulation Of Mir-99a/Mtor/Pkm2 Pathway., Wei Li, Jing Wang, Qiu-Dan Chen, Xu Qian, Qi Li, Yu Yin, Zhu-Mei Shi, Lin Wang, Jie Lin, Ling-Zhi Liu, Bing-Hua Jiang

Kimmel Cancer Center Faculty Papers

Insulin is known to regulate multiple cellular functions and is used for the treatment of diabetes. MicroRNAs have been demonstrated to be involved in many human diseases, including Type 2 diabetes. In this study, we showed that insulin decreased miR-99a expression levels, but induced glucose consumption and lactate production, and increased the expression of mTOR, HIF-1α and PKM2 in HepG2 and HL7702 cells. Forced expression of miR-99a or rapamycin treatment blocked insulin-induced PKM2 and HIF-1α expression, and glucose consumption and lactate production. Meanwhile, knockdown of HIF-1α inhibited PKM2 expression and insulin-induced glucose consumption. Taken together, these findings will reveal the …

A Public Health Response Against Strongyloides Stercoralis: Time To Look At Soil-Transmitted Helminthiasis In Full., Alejandro J Krolewiecki, Patrick Lammie, Julie Jacobson, Albis-Francesco Gabrielli, Bruno Levecke, Eugenia Socias, Luis M Arias, Nicanor Sosa, David Abraham, Ruben Cimino, Adriana Echazú, Favio Crudo, Jozef Vercruysse, Marco Albonico

Department of Microbiology and Immunology Faculty Papers

Strongyloides stercoralis infections have a worldwide distribution with a global burden in terms of prevalence and morbidity that is largely ignored. A public health response against soil-transmitted helminth (STH) infections should broaden the strategy to include S. stercoralis and overcome the epidemiological, diagnostic, and therapeutic challenges that this parasite poses in comparison to Ascaris lumbricoides, Trichuris trichiura, and hookworms. The relatively poor sensitivity of single stool evaluations, which is further lowered when quantitative techniques aimed at detecting eggs are used, also complicates morbidity evaluations and adequate drug efficacy measurements, since S. stercoralis is eliminated in stools in a larval stage. …

The Nordinet® International Outcome Study And Novonet® Answer Program®: Rationale, Design, And Methodology Of Two International Pharmacoepidemiological Registry-Based Studies Monitoring Long-Term Clinical And Safety Outcomes Of Growth Hormone Therapy (Norditropin®)., Charlotte Höybye, Lars Sävendahl, Henrik Thybo Christesen, Peter Lee, Birgitte Tønnes Pedersen, Michael Schlumpf, John Germak, Judith Ross

Department of Pediatrics Faculty Papers

OBJECTIVE: Randomized controlled trials have shown that growth hormone (GH) therapy has effects on growth, metabolism, and body composition. GH therapy is prescribed for children with growth failure and adults with GH deficiency. Carefully conducted observational study of GH treatment affords the opportunity to assess long-term treatment outcomes and the clinical factors and variables affecting those outcomes, in patients receiving GH therapy in routine clinical practice.

DESIGN: The NordiNet® International Outcome Study (IOS) and the American Norditropin® Studies: Web Enabled Research (ANSWER Program®) are two complementary, non-interventional, observational studies that adhere to current guidelines for pharmacoepidemiological data.

PATIENTS: The studies …

To Re-Excise Or Not To Re-Excise: Positive Margins After Excision Of Non-Melanoma Skin Cancers, Ramon Garza, Iii Md, Courtney Edwards Md, Bharat Ranganath Md, Nathan F. Miller Bs, Joshua M. Adkinson Md, Kirsten S. Bellucci Md, Robert X. Murphy Jr, Md, Ms

Department of Surgery

No abstract provided.

Pharmacology And Clinical Potential Of Guanylyl Cyclase C Agonists In The Treatment Of Ulcerative Colitis., Giovanni M Pitari

Department of Pharmacology and Experimental Therapeutics Faculty Papers

Agonists of the transmembrane intestinal receptor guanylyl cyclase C (GCC) have recently attracted interest as promising human therapeutics. Peptide ligands that can specifically induce GCC signaling in the intestine include endogenous hormones guanylin and uroguanylin, diarrheagenic bacterial enterotoxins (ST), and synthetic drugs linaclotide, plecanatide, and SP-333. These agonists bind to GCC at intestinal epithelial surfaces and activate the receptor's intracellular catalytic domain, an event initiating discrete biological responses upon conversion of guanosine-5'-triphosphate to cyclic guanosine monophosphate. A principal action of GCC agonists in the colon is the promotion of mucosal homeostasis and its dependent barrier function. Herein, GCC agonists are …

Comparison Study Of Airway Reactivity Outcomes Due To A Pharmacologic Challenge Test: Impulse Oscillometry Versus Least Mean Squared Analysis Techniques., Elena Rodriguez, Charrell M Bullard, Milena H Armani, Thomas L Miller, Thomas H Shaffer

Department of Medicine Faculty Papers

The technique of measuring transpulmonary pressure and respiratory airflow with manometry and pneumotachography using the least mean squared analysis (LMS) has been used broadly in both preclinical and clinical settings for the evaluation of neonatal respiratory function during tidal volume breathing for lung tissue and airway frictional mechanical properties measurements. Whereas the technique of measuring respiratory function using the impulse oscillation technique (IOS) involves the assessment of the relationship between pressure and flow using an impulse signal with a range of frequencies, requires less cooperation and provides more information on total respiratory system resistance (chest wall, lung tissue, and airways). …