Open Access. Powered by Scholars. Published by Universities.®

Medical Biochemistry Commons

Open Access. Powered by Scholars. Published by Universities.®

1,093 Full-Text Articles 3,185 Authors 107,250 Downloads 78 Institutions

All Articles in Medical Biochemistry

Faceted Search

1,093 full-text articles. Page 4 of 39.

Linear Ubiquitin Chain-Binding Domains, Lilian Fennell, Simin Rahighi, Fumiyo Ikeda 2018 Vienna BioCenter

Linear Ubiquitin Chain-Binding Domains, Lilian Fennell, Simin Rahighi, Fumiyo Ikeda

Pharmacy Faculty Articles and Research

Ubiquitin modification (ubiquitination) of target proteins can vary with respect to chain lengths, linkage type, and chain forms, such as homologous, mixed, and branched ubiquitin chains. Thus, ubiquitination can generate multiple unique surfaces on a target protein substrate. Ubiquitin‐binding domains (UBDs) recognize ubiquitinated substrates, by specifically binding to these unique surfaces, modulate the formation of cellular signaling complexes and regulate downstream signaling cascades. Among the eight different homotypic chain types, Met1‐linked (also termed linear) chains are the only chains in which linkage occurs on a non‐Lys residue of ubiquitin. Linear ubiquitin chains have been implicated in immune ...


Increasing Autophagy And Blocking Nrf2 Suppress Laminopathy-Induced Age-Dependent Cardiac Dysfunction And Shortened Lifespan, Shruti Bhide, Adriana S Trujillo, Maureen T O'Connor, Grant H Young, Diane E Cryderman, Sahaana Chandran, Mastaneh Nikravesh, Lori L Wallrath, Girish C Melkani 2018 San Diego State University

Increasing Autophagy And Blocking Nrf2 Suppress Laminopathy-Induced Age-Dependent Cardiac Dysfunction And Shortened Lifespan, Shruti Bhide, Adriana S Trujillo, Maureen T O'Connor, Grant H Young, Diane E Cryderman, Sahaana Chandran, Mastaneh Nikravesh, Lori L Wallrath, Girish C Melkani

Department of Biochemistry Publications

Mutations in the human LMNA gene cause a collection of diseases known as laminopathies. These include myocardial diseases that exhibit age-dependent penetrance of dysrhythmias and heart failure. The LMNA gene encodes A-type lamins, intermediate filaments that support nuclear structure and organize the genome. Mechanisms by which mutant lamins cause age-dependent heart defects are not well understood. To address this issue, we modeled human disease-causing mutations in the Drosophila melanogaster Lamin C gene and expressed mutant Lamin C exclusively in the heart. This resulted in progressive cardiac dysfunction, loss of adipose tissue homeostasis, and a shortened adult lifespan. Within cardiac cells ...


Ferrocenylchalcone-Uracil Conjugates: Synthesis And Cytotoxic Evaluation, Amandeep Singh, Vishu Mehra, Neda Sadeghiani, Saghar Mozaffari, Keykavous Parang, Vipan Kumar 2018 Guru Nanak Dev University

Ferrocenylchalcone-Uracil Conjugates: Synthesis And Cytotoxic Evaluation, Amandeep Singh, Vishu Mehra, Neda Sadeghiani, Saghar Mozaffari, Keykavous Parang, Vipan Kumar

Pharmacy Faculty Articles and Research

Huisgen’s azide-alkyne cycloaddition reaction was employed to synthesize a series of 1H-1,2,3-triazole-tethered uracil-ferrocenyl chalcone conjugates with the aim of evaluating their in vitro anti-proliferative efficacy on human leukemia (CCRF-CEM) and human breast adenocarcinoma (MDA-MB-468) cell lines. Cytotoxic evaluation studies identified a number of synthesized conjugates that inhibited the proliferation of leukemia cancer cells by ~70% after 72 h. The selected synthesized conjugates were found to be significantly less cytotoxic against normal kidney cell line (LLC-PK1) when compared with CCRF-CEM cancer cells.


Breaking Symmetry In Viral Icosahedral Capsids As Seen Through The Lenses Of X-Ray Crystallography And Cryo-Electron Microscopy., Kristin N. Parent, Jason R. Schrad, Gino Cingolani 2018 Michigan State University

Breaking Symmetry In Viral Icosahedral Capsids As Seen Through The Lenses Of X-Ray Crystallography And Cryo-Electron Microscopy., Kristin N. Parent, Jason R. Schrad, Gino Cingolani

Department of Biochemistry and Molecular Biology Faculty Papers

The majority of viruses on Earth form capsids built by multiple copies of one or more types of a coat protein arranged with 532 symmetry, generating an icosahedral shell. This highly repetitive structure is ideal to closely pack identical protein subunits and to enclose the nucleic acid genomes. However, the icosahedral capsid is not merely a passive cage but undergoes dynamic events to promote packaging, maturation and the transfer of the viral genome into the host. These essential processes are often mediated by proteinaceous complexes that interrupt the shell's icosahedral symmetry, providing a gateway through the capsid. In this ...


Synthesis, Characterization, And In Vitro Cytotoxicity Of Fatty Acyl-Cgkrk-Chitosan Oligosaccharides Conjugates For Sirna Delivery, Naglaa Salem El-Sayed, Meenakshi Sharma, Hamidreza Montazeri Aliabadi, Magda Goda El-Meligy, Ahmed Kamed El-Zaity, Zenat Adeeb Nageib, Rakesh Tiwari 2018 National Research Center, Egypt

Synthesis, Characterization, And In Vitro Cytotoxicity Of Fatty Acyl-Cgkrk-Chitosan Oligosaccharides Conjugates For Sirna Delivery, Naglaa Salem El-Sayed, Meenakshi Sharma, Hamidreza Montazeri Aliabadi, Magda Goda El-Meligy, Ahmed Kamed El-Zaity, Zenat Adeeb Nageib, Rakesh Tiwari

Pharmacy Faculty Articles and Research

In this studies, three fatty acyl derivatives of CGKRK homing peptides were coupled successfully to chitosan oligosaccharides (COS) using sulfosuccinimidyl-4-(N-maleimidomethyl)cyclohexane-1-carboxylate sodium salt (sulfo-SMCC). The COS-SMCC was prepared by direct coupling between COS and sulfo-SMCC in PBS (pH 7.5) at RT for 48 h. The structure of COS-SMCC and the three fatty acyl-CGKRK-SMCC-COS conjugates were characterized by FT-IR, 13C NMR, and SEM. The ability of three conjugates to condense siRNA into nanosized polyplexes and their efficacy in protecting siRNA from serum nucleases degradation were investigated. Among the investigated derivatives, S-CGKRK-COS showed higher siRNA binding affinity as ...


Novel Combination Bmp7 And Hgf Gene Therapy Instigates Selective Myofibroblast Apoptosis And Reduces Corneal Haze In Vivo, Suneel Gupta, Michael K. Fink, Arkasubhra Ghosh, Ratnakar Tripathi, Prashant R. Sinha, Ajay Sharma, Nathan P. Hesemann, Shyam S. Chaurasia, Elizabeth A. Giuliano, Rajiv R. Mohan 2018 Harry S. Truman Memorial Veterans’ Hospital

Novel Combination Bmp7 And Hgf Gene Therapy Instigates Selective Myofibroblast Apoptosis And Reduces Corneal Haze In Vivo, Suneel Gupta, Michael K. Fink, Arkasubhra Ghosh, Ratnakar Tripathi, Prashant R. Sinha, Ajay Sharma, Nathan P. Hesemann, Shyam S. Chaurasia, Elizabeth A. Giuliano, Rajiv R. Mohan

Pharmacy Faculty Articles and Research

PURPOSE. We tested the potential of bone morphogenic protein 7 (BMP7) and hepatocyte growth factor (HGF) combination gene therapy to treat preformed corneal fibrosis using established rabbit in vivo and human in vitro models.

METHODS. Eighteen New Zealand White rabbits were used. Corneal fibrosis was produced by alkali injury. Twenty-four hours after scar formation, cornea received topically either balanced salt solution (BSS; n ¼ 6), polyethylenimine-conjugated gold nanoparticle (PEI2-GNP)-naked plasmid (n ¼ 6) or PEI2-GNP plasmids expressing BMP7 and HGF genes (n ¼ 6). Donor human corneas were used to obtain primary human corneal fibroblasts and myofibroblasts for mechanistic ...


Arylquinoline And Analog Compounds And Use Thereof To Treat Cancer, David S. Watt, Chunming Liu, Vivek M. Rangnekar, Vitaliy M. Sviripa, Ravshan Burikhanov, Wen Zhang 2018 University of Kentucky

Arylquinoline And Analog Compounds And Use Thereof To Treat Cancer, David S. Watt, Chunming Liu, Vivek M. Rangnekar, Vitaliy M. Sviripa, Ravshan Burikhanov, Wen Zhang

Molecular and Cellular Biochemistry Faculty Patents

The subject technology relates to arylquinoline compounds and their use for treating cancer or cancer metastasis. The compounds of the subject technology promote cells to secrete a pro-apoptotic tumor suppressor, i.e., prostate apoptosis response-4 (Par-4), which in turn promote apoptosis in cancer cells or metastatic cells.


Curcumin Potentiates The Function Of Human Α7-Nicotinic Acetylcholine Receptors Expressed In Sh-Ep1 Cells, Eslam El Nebrisi, Lina T. Al Kury, Keun-Hang Susan Yang, Petrilla Jayaprakash, Frank Christopher Howarth, Nadine Kabbani, Murat Oz 2018 UAE University

Curcumin Potentiates The Function Of Human Α7-Nicotinic Acetylcholine Receptors Expressed In Sh-Ep1 Cells, Eslam El Nebrisi, Lina T. Al Kury, Keun-Hang Susan Yang, Petrilla Jayaprakash, Frank Christopher Howarth, Nadine Kabbani, Murat Oz

Mathematics, Physics, and Computer Science Faculty Articles and Research

Effects of curcumin, a biologically active ingredient of turmeric, were tested on the Ca2+transients induced by the activation of α7 subunit of the human nicotinic acetylcholine (α7nACh) receptor expressed in SH-EP1 cells. Curcumin caused a significant potentiation of choline (1 mM)-induced Ca2+ transients with an EC50 value of 133 nM. The potentiating effect of curcumin was not observed in Ca2+ transients induced by high K+ (60 mM) containing solutions or activation of α4β2 nACh receptors and the extent of curcumin potentiation was not altered in the presence of ...


Sphingomyelin And Gm1 Influence Huntingtin Binding To, Disruption Of, And Aggregation On Lipid Membranes, Maxmore Chaibva, Xiang Gao, Pranav Jain, Warren A. Campbell, Shelli L. Frey, Justin Legleiter 2018 West Virginia University

Sphingomyelin And Gm1 Influence Huntingtin Binding To, Disruption Of, And Aggregation On Lipid Membranes, Maxmore Chaibva, Xiang Gao, Pranav Jain, Warren A. Campbell, Shelli L. Frey, Justin Legleiter

Chemistry Faculty Publications

Huntington disease (HD) is an inherited neurodegenerative disease caused by the expansion beyond a critical threshold of a polyglutamine (polyQ) tract near the N-terminus of the huntingtin (htt) protein. Expanded polyQ promotes the formation of a variety of oligomeric and fibrillar aggregates of htt that accumulate into the hallmark proteinaceous inclusion bodies associated with HD. htt is also highly associated with numerous cellular and subcellular membranes that contain a variety of lipids. As lipid homeostasis and metabolism abnormalities are observed in HD patients, we investigated how varying both the sphingomyelin (SM) and ganglioside (GM1) contents modifies the interactions between htt ...


Characterization Of Cdk(5) Inhibitor, 20-223 (Aka Cp668863) For Colorectal Cancer Therapy, Caroline M. Robb, Smit Kour, Jacob I. Contreras, Ekta Agarwal, Carter J. Barger, Sandeep Rana, Yogesh Sonawane, Beth K. Neilsen, Margaret Taylor, Smitha Kizhake, Rhishikesh N. Thakare, Sanjib Chowdhury, Jing Wang, Jennifer D. Black, Michael A. Hollingsworth, Michael G. Brattain, Amarnath Natarajan 2018 University of Nebraska Medical Center

Characterization Of Cdk(5) Inhibitor, 20-223 (Aka Cp668863) For Colorectal Cancer Therapy, Caroline M. Robb, Smit Kour, Jacob I. Contreras, Ekta Agarwal, Carter J. Barger, Sandeep Rana, Yogesh Sonawane, Beth K. Neilsen, Margaret Taylor, Smitha Kizhake, Rhishikesh N. Thakare, Sanjib Chowdhury, Jing Wang, Jennifer D. Black, Michael A. Hollingsworth, Michael G. Brattain, Amarnath Natarajan

Journal Articles: Biochemistry & Molecular Biology

Colorectal cancer (CRC) remains one of the leading causes of cancer related deaths in the United States. Currently, there are limited therapeutic options for patients suffering from CRC, none of which focus on the cell signaling mechanisms controlled by the popular kinase family, cyclin dependent kinases (CDKs). Here we evaluate a Pfizer developed compound, CP668863, that inhibits cyclin-dependent kinase 5 (CDK5) in neurodegenerative disorders. CDK5 has been implicated in a number of cancers, most recently as an oncogene in colorectal cancers. Our lab synthesized and characterized CP668863 – now called 20-223. In our established colorectal cancer xenograft model, 20-223 reduced tumor ...


Pancreatic Cancer Associated With Obesity And Diabetes: An Alternative Approach For Its Targeting, Ramesh Pothuraju, Satyanarayana Rachagani, Wade M. Junker, Sanjib Chaudhary, Saraswathi Viswanathan, Sukhwinder Kaur, Surinder K. Batra 2018 University of Nebraska Medical Center

Pancreatic Cancer Associated With Obesity And Diabetes: An Alternative Approach For Its Targeting, Ramesh Pothuraju, Satyanarayana Rachagani, Wade M. Junker, Sanjib Chaudhary, Saraswathi Viswanathan, Sukhwinder Kaur, Surinder K. Batra

Journal Articles: Biochemistry & Molecular Biology

BACKGROUND: Pancreatic cancer (PC) is among foremost causes of cancer related deaths worldwide due to generic symptoms, lack of effective screening strategies and resistance to chemo- and radiotherapies. The risk factors associated with PC include several metabolic disorders such as obesity, insulin resistance and type 2 diabetes mellitus (T2DM). Studies have shown that obesity and T2DM are associated with PC pathogenesis; however, their role in PC initiation and development remains obscure.

MAIN BODY: Several biochemical and physiological factors associated with obesity and/or T2DM including adipokines, inflammatory mediators, and altered microbiome are involved in PC progression and metastasis albeit by ...


Improving Adherence To The European Society Of Cardiology’S 24-Hour To Coronary Angiogram Guideline, Rachel Malone 2018 Royal College of Surgeons in Ireland

Improving Adherence To The European Society Of Cardiology’S 24-Hour To Coronary Angiogram Guideline, Rachel Malone

Masters theses/dissertations - taught courses

Abstract:

Healthcare accessibility in Ireland is the worst in Europe. The project site (north Dublin teaching hospital), had over 700 Emergency Department (ED) Non-ST- Elevated Myocardial Infarctions (NSTEMIs) in 2017. These NSTEMI's were associated with increased times to Coronary Angiogram (CA), when compared to the European Society of Cardiology's (ESC) 24-hour to CA guideline. Increased time to CA is associated with increased mortality. Using Lean Six Sigma (LSS) tools within the DMAIC (Define, Measure, Analyse, Improve, and Control) Quality Improvement (QI) model, the root causes of increased times to CA times were identified. One cause found was the ...


Effect Of Metformin Exposure On Growth And Photosynthetic Performance In The Unicellular Freshwater Chlorophyte, Chlorella Vulgaris, Brittany M. Cummings, Joseph A. Needoba, Tawnya D. Peterson 2018 Oregon Health & Science University–OHSU-PSU School of Public Health School of Public Health

Effect Of Metformin Exposure On Growth And Photosynthetic Performance In The Unicellular Freshwater Chlorophyte, Chlorella Vulgaris, Brittany M. Cummings, Joseph A. Needoba, Tawnya D. Peterson

OHSU-PSU School of Public Health Faculty Publications and Presentations

Many pharmaceuticals have negative effects on biota when released into the environment. For example, recent work has shown that the commonly prescribed antidiabetic drug, metformin (N,N-dimethylbiguanide), has endocrine disrupting effects on fish. However, effects of metformin on aquatic primary producers are poorly known. We exposed cultured isolates of a freshwater chlorophyte, Chlorella vulgaris, to a range of metformin concentrations (0– 767.9 mg L-1) to test the hypothesis that exposure negatively affects photosynthesis and growth. A cessation of growth, increase in non-photochemical quenching (NPQ, NPQmax), and reduced electron transport rate (ETR) were observed 24 h after exposure to a ...


Understanding The Role Of Phosphoinositide 3-Kinase And Its Function As A Driving Force Behind The Er Stress Response In Fibrostenotic Crohn’S Disease-Affected Ileal Smooth Muscle Cells, Prashant Yadav 2018 Virginia Commonwealth University

Understanding The Role Of Phosphoinositide 3-Kinase And Its Function As A Driving Force Behind The Er Stress Response In Fibrostenotic Crohn’S Disease-Affected Ileal Smooth Muscle Cells, Prashant Yadav

Theses and Dissertations

Crohn’s disease (CD) affects about 780,000 people in the United States alone, and it is estimated that 6-15 per 100,000 persons will receive a diagnosis of this disease each year. There currently is no cure for Crohn’s disease, and available medical therapies simply serve to alleviate the inflammation. This does not help treat fibrostenosis that Crohn’s disease patients may develop, which can only be treated surgically. Finding alternatives to treat CD requires an understanding of mechanisms at the biochemical level. In this thesis, we attempted to gain a better understanding of certain pathways found to ...


Saturation Mutagenesis Reveals Manifold Determinants Of Exon Definition., Shengdong Ke, Vincent Anquetil, Jorge Rojas Zamalloa, Alisha Maity, Anthony Yang, Mauricio A. Arias, Sergey Kalachikov, James J Russo, Jingyue Ju, Lawrence A. Chasin 2018 Columbia University; Jackson Laboratory, Bar Harbor, ME

Saturation Mutagenesis Reveals Manifold Determinants Of Exon Definition., Shengdong Ke, Vincent Anquetil, Jorge Rojas Zamalloa, Alisha Maity, Anthony Yang, Mauricio A. Arias, Sergey Kalachikov, James J Russo, Jingyue Ju, Lawrence A. Chasin

Student Papers & Posters

To illuminate the extent and roles of exonic sequences in the splicing of human RNA transcripts, we conducted saturation mutagenesis of a 51-nt internal exon in a three-exon minigene. All possible single and tandem dinucleotide substitutions were surveyed. Using high-throughput genetics, 5560 minigene molecules were assayed for splicing in human HEK293 cells. Up to 70% of mutations produced substantial (greater than twofold) phenotypes of either increased or decreased splicing. Of all predicted secondary structural elements, only a single 15-nt stem-loop showed a strong correlation with splicing, acting negatively. The in vitro formation of exon-protein complexes between the mutant molecules and ...


Targeting Ovarian Cancer And Endothelium With An Allosteric Ptp4a3 Phosphatase Inhibitor, Kelley E. McQueeney, Joseph M. Salamoun, James C. Burnett, Nektarios Barabutis, Paula Pekic, Sophie L. Lewandowski, Danielle C. Llaneza, Robert Cornelison, Yunpeng Bai, Zhong-Yin Zhang, John D. Catravas 2018 Old Dominion University

Targeting Ovarian Cancer And Endothelium With An Allosteric Ptp4a3 Phosphatase Inhibitor, Kelley E. Mcqueeney, Joseph M. Salamoun, James C. Burnett, Nektarios Barabutis, Paula Pekic, Sophie L. Lewandowski, Danielle C. Llaneza, Robert Cornelison, Yunpeng Bai, Zhong-Yin Zhang, John D. Catravas

Bioelectrics Publications

Overexpression of protein tyrosine phosphatase PTP4A oncoproteins is common in many human cancers and is associated with poor patient prognosis and survival. We observed elevated levels of PTP4A3 phosphatase in 79% of human ovarian tumor samples, with significant overexpression in tumor endothelium and pericytes. Furthermore, PTP4A phosphatases appear to regulate several key malignant processes, such as invasion, migration, and angiogenesis, suggesting a pivotal regulatory role in cancer and endothelial signaling pathways. While phosphatases are attractive therapeutic targets, they have been poorly investigated because of a lack of potent and selective chemical probes. In this study, we disclose that a potent ...


Plasma Medicine: A Brief Introduction, Mounir Laroussi 2018 Old Dominion University

Plasma Medicine: A Brief Introduction, Mounir Laroussi

Electrical & Computer Engineering Faculty Publications

This mini review is to introduce the readers of Plasma to the field of plasma medicine. This is a multidisciplinary field of research at the intersection of physics, engineering, biology and medicine. Plasma medicine is only about two decades old, but the research community active in this emerging field has grown tremendously in the last few years. Today, research is being conducted on a number of applications including wound healing and cancer treatment. Although a lot of knowledge has been created and our understanding of the fundamental mechanisms that play important roles in the interaction between low temperature plasma and ...


Reducing Discard Blood Draw Volumes From Subcutaneously Implanted Ports (Port) In Patients With End Stage Renal Disease (Esrd), Uttam Garg, Tyson Moore, Renita Trujillo, Penny Monachino, Amy Wiebold, Angela Ferguson, Gabor Oroszi, Vimal Chadha 2018 Children's Mercy Hospital

Reducing Discard Blood Draw Volumes From Subcutaneously Implanted Ports (Port) In Patients With End Stage Renal Disease (Esrd), Uttam Garg, Tyson Moore, Renita Trujillo, Penny Monachino, Amy Wiebold, Angela Ferguson, Gabor Oroszi, Vimal Chadha

Posters

Background
•To monitor clinical status, dialysis and transplant patients with ESRD frequently require blood draws.
•To preserve their veins and to avoid frequent intravenous access, these patients, especially young children, require PORT placement.
•The PORT is flushed with saline and filled with heparinized saline to prevent blood clotting between blood draws.
•To avoid contamination from PORT fluids, a fixed amount of blood is withdrawn and discarded before the blood sample is drawn for laboratory analyses. Currently, the recommended discard blood volume is 5 mL (five times the reservoir volume of most PORTs and attached catheters.)
•The volume of discarded blood ...


Significant Loss Of Blood Amino Acids And Free Carnitine In Newborns Receiving Continuous Renal Replacement Therapy (Crrt), Uttam Garg, Marita Thompson, Bradley A. Warady, Vimal Chadha 2018 Children's Mercy Hospital

Significant Loss Of Blood Amino Acids And Free Carnitine In Newborns Receiving Continuous Renal Replacement Therapy (Crrt), Uttam Garg, Marita Thompson, Bradley A. Warady, Vimal Chadha

Posters

Background

•Newborns with acute kidney injury (AKI) or end-stage kidney disease (ESKD) often receive prolonged CRRT when the early initiation of peritoneal dialysis is either contraindicated or unable to be performed. •These patients often receive total parenteral nutrition (TPN) to meet their nutritional goals. •Little to no information exists on the loss of blood amino acids (AA) and carnitine during CRRT in these patients. •The objective of this study was to determine the amino acids and carnitine losses in newborns receiving prolonged CRRT and TPN. Material and Methods

•Three newborns who received prolonged (> 2 weeks) CRRT and TPN were included ...


Tolerance To Sustained Activation Of The Camp/Creb Pathway Activity In Osteoblastic Cells Is Enabled By Loss Of P53, Mannu K. Walia, Scott Taylor, Patricia M.W. Ho, John Martin, Carl Walkley 2018 Australian Catholic University

Tolerance To Sustained Activation Of The Camp/Creb Pathway Activity In Osteoblastic Cells Is Enabled By Loss Of P53, Mannu K. Walia, Scott Taylor, Patricia M.W. Ho, John Martin, Carl Walkley

Faculty of Health Sciences Publications

The loss of p53 function is a central event in the genesis of osteosarcoma (OS). How mutation of p53 enables OS development from osteoblastic lineage cells is poorly understood. We and others have reported a key role for elevated and persistent activation of the cAMP/PKA/Creb1 pathway in maintenance of OS. In view of the osteoblast lineage being the cell of origin of OS, we sought to determine how these pathways interact within the context of the normal osteoblast. Normal osteoblasts (p53 WT) rapidly underwent apoptosis in response to acute elevation of cAMP levels or activity, whereas p53-deficient osteoblasts ...


Digital Commons powered by bepress