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World Journal of Biological Chemistry

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https://www.readbyqxmd.com/read/28289522/device-associated-infection-rates-mortality-length-of-stay-and-bacterial-resistance-in-intensive-care-units-in-ecuador-international-nosocomial-infection-control-consortium-s-findings
#1
Estuardo Salgado Yepez, Maria M Bovera, Victor D Rosenthal, Hugo A González Flores, Leonardo Pazmiño, Francisco Valencia, Nelly Alquinga, Vanessa Ramirez, Edgar Jara, Miguel Lascano, Veronica Delgado, Cristian Cevallos, Gasdali Santacruz, Cristian Pelaéz, Celso Zaruma, Diego Barahona Pinto
AIM: To report the results of the International Nosocomial Infection Control Consortium (INICC) study conducted in Quito, Ecuador. METHODS: A device-associated healthcare-acquired infection (DA-HAI) prospective surveillance study conducted from October 2013 to January 2015 in 2 adult intensive care units (ICUs) from 2 hospitals using the United States Centers for Disease Control/National Healthcare Safety Network (CDC/NHSN) definitions and INICC methods. RESULTS: We followed 776 ICU patients for 4818 bed-days...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289521/l-carnitine-protects-c2c12-cells-against-mitochondrial-superoxide-overproduction-and-cell-death
#2
Françoise Le Borgne, Gaétan Ravaut, Arnaud Bernard, Jean Demarquoy
AIM: To identify and characterize the protective effect that L-carnitine exerted against an oxidative stress in C2C12 cells. METHODS: Myoblastic C2C12 cells were treated with menadione, a vitamin K analog that engenders oxidative stress, and the protective effect of L-carnitine (a nutrient involved in fatty acid metabolism and the control of the oxidative process), was assessed by monitoring various parameters related to the oxidative stress, autophagy and cell death...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289520/use-of-thyroglobulin-as-a-tumour-marker
#3
REVIEW
Buddhike Sri Harsha Indrasena
It is worthwhile to measure serum thyroglobulin (TG) level in thyroid cancer before subjecting patients to surgery for two reasons. Firstly, if the level is high, it may give a clue to the local and metastatic tumour burden at presentation; secondly, if the level is normal, it identifies the patients who are unlikely to show rising TG levels in the presence of thyroid cancer. Those who have high serum TG before surgery will show up recurrence as rising serum TG during the postoperative period. Those who do not have high serum TG before surgery will not show up rising serum TG in the presence of recurrent disease...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289519/challenges-in-the-chemotherapy-of-chagas-disease-looking-for-possibilities-related-to-the-differences-and-similarities-between-the-parasite-and-host
#4
REVIEW
Vitor Sueth-Santiago, Debora Decote-Ricardo, Alexandre Morrot, Celio Geraldo Freire-de-Lima, Marco Edilson Freire Lima
Almost 110 years after the first studies by Dr. Carlos Chagas describing an infectious disease that was named for him, Chagas disease remains a neglected illness and a death sentence for infected people in poor countries. This short review highlights the enormous need for new studies aimed at the development of novel and more specific drugs to treat chagasic patients. The primary tool for facing this challenge is deep knowledge about the similarities and differences between the parasite and its human host.
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289518/role-of-micrornas-in-translation-regulation-and-cancer
#5
REVIEW
Stefania Oliveto, Marilena Mancino, Nicola Manfrini, Stefano Biffo
MicroRNAs (miRNAs) are pervasively expressed and regulate most biological functions. They function by modulating transcriptional and translational programs and therefore they orchestrate both physiological and pathological processes, such as development, cell differentiation, proliferation, apoptosis and tumor growth. miRNAs work as small guide molecules in RNA silencing, by negatively regulating the expression of several genes both at mRNA and protein level, by degrading their mRNA target and/or by silencing translation...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289517/retroviral-integrase-protein-and-intasome-nucleoprotein-complex-structures
#6
REVIEW
Julia Grawenhoff, Alan N Engelman
Retroviral replication proceeds through the integration of a DNA copy of the viral RNA genome into the host cellular genome, a process that is mediated by the viral integrase (IN) protein. IN catalyzes two distinct chemical reactions: 3'-processing, whereby the viral DNA is recessed by a di- or trinucleotide at its 3'-ends, and strand transfer, in which the processed viral DNA ends are inserted into host chromosomal DNA. Although IN has been studied as a recombinant protein since the 1980s, detailed structural understanding of its catalytic functions awaited high resolution structures of functional IN-DNA complexes or intasomes, initially obtained in 2010 for the spumavirus prototype foamy virus (PFV)...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289516/biochemical-changes-in-the-injured-brain
#7
EDITORIAL
Seelora Sahu, Deb Sanjay Nag, Amlan Swain, Devi Prasad Samaddar
Brain metabolism is an energy intensive phenomenon involving a wide spectrum of chemical intermediaries. Various injury states have a detrimental effect on the biochemical processes involved in the homeostatic and electrophysiological properties of the brain. The biochemical markers of brain injury are a recent addition in the armamentarium of neuro-clinicians and are being increasingly used in the routine management of neuro-pathological entities such as traumatic brain injury, stroke, subarachnoid haemorrhage and intracranial space occupying lesions...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289515/biochemical-strategies-for-the-detection-and-detoxification-of-toxic-chemicals-in-the-environment
#8
EDITORIAL
Ferdinando Febbraio
Addressing the problems related to the widespread presence of an increasing number of chemicals released into the environment by human activities represents one of the most important challenges of this century. In the last few years, to replace the high cost, in terms of time and money, of conventional technologies, the scientific community has directed considerable research towards the development both of new detection systems for the measurement of the contamination levels of chemicals in people's body fluids and tissue, as well as in the environment, and of new remediation strategies for the removal of such chemicals from the environment, as a means of the prevention of human diseases...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289514/modern-trends-in-animal-venom-research-omics-and-nanomaterials
#9
EDITORIAL
Yuri N Utkin
Animal venom research is a specialized investigation field, in which a number of different methods are used and this array is constantly expanding. Thus, recently emerged omics and nanotechnologies have already been successfully applied to venom research. Animal venoms have been studied for quite a long time. The traditional reductionist approach has been to isolate individual toxins and then study their structure and function. Unfortunately, the characterization of the venom as a whole system and its multiple effects on an entire organism were not possible until recent times...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289513/role-of-%C3%AE-amino-3-hydroxy-5-methyl-4-isoxazole-propionic-acid-receptor-regulation-in-stress-induced-pain-chronification
#10
EDITORIAL
Sufang Liu, Feng Tao
Persistent postsurgical pain is a serious issue in public health, which has received increased interest in recent years. Previous studies have reported that psychological factors promote the development of chronic postsurgical pain. However, it is unclear how chronification of postsurgical pain occurs. The α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid receptor (AMPA) phosphorylation in the central nervous system plays a critical role in synaptic plasticity and contributes to central sensitization and chronic pain development...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27957248/mechanisms-of-the-alternative-activation-of-macrophages-and-non-coding-rnas-in-the-development-of-radiation-induced-lung-fibrosis
#11
REVIEW
Nadire Duru, Benjamin Wolfson, Qun Zhou
Radiation-induced lung fibrosis (RILF) is a common side effect of thoracic irradiation therapy and leads to high mortality rates after cancer treatment. Radiation injury induces inflammatory M1 macrophage polarization leading to radiation pneumonitis, the first stage of RILF progression. Fibrosis occurs due to the transition of M1 macrophages to the anti-inflammatory pro-fibrotic M2 phenotype, and the resulting imbalance of macrophage regulated inflammatory signaling. Non-coding RNA signaling has been shown to play a large role in the regulation of the M2 mediated signaling pathways that are associated with the development and progression of fibrosis...
November 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27621770/chromatin-boundary-elements-organize-genomic-architecture-and-developmental-gene-regulation-in-drosophila-hox-clusters
#12
REVIEW
Zhibo Ma, Mo Li, Sharmila Roy, Kevin J Liu, Matthew L Romine, Derrick C Lane, Sapna K Patel, Haini N Cai
The three-dimensional (3D) organization of the eukaryotic genome is critical for its proper function. Evidence suggests that extensive chromatin loops form the building blocks of the genomic architecture, separating genes and gene clusters into distinct functional domains. These loops are anchored in part by a special type of DNA elements called chromatin boundary elements (CBEs). CBEs were originally found to insulate neighboring genes by blocking influences of transcriptional enhancers or the spread of silent chromatin...
August 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27247709/high-mobility-group-protein-1-a-collaborator-in-nucleosome-dynamics-and-estrogen-responsive-gene-expression
#13
REVIEW
William M Scovell
High mobility group protein 1 (HMGB1) is a multifunctional protein that interacts with DNA and chromatin to influence the regulation of transcription, DNA replication and repair and recombination. We show that HMGB1 alters the structure and stability of the canonical nucleosome (N) in a nonenzymatic, adenosine triphosphate-independent manner. As a result, the canonical nucleosome is converted to two stable, physically distinct nucleosome conformers. Although estrogen receptor (ER) does not bind to its consensus estrogen response element within a nucleosome, HMGB1 restructures the nucleosome to facilitate strong ER binding...
May 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26981207/epigenetic-alteration-to-activate-bmp2-smad-signaling-in-raf-induced-senescence
#14
Mai Fujimoto, Yasunobu Mano, Motonobu Anai, Shogo Yamamoto, Masaki Fukuyo, Hiroyuki Aburatani, Atsushi Kaneda
AIM: To investigate epigenomic and gene expression alterations during cellular senescence induced by oncogenic Raf. METHODS: Cellular senescence was induced into mouse embryonic fibroblasts (MEFs) by infecting retrovirus to express oncogenic Raf (RafV600E). RNA was collected from RafV600E cells as well as MEFs without infection and MEFs with mock infection, and a genome-wide gene expression analysis was performed using microarray. The epigenomic status for active H3K4me3 and repressive H3K27me3 histone marks was analyzed by chromatin immunoprecipitation-sequencing for RafV600E cells on day 7 and for MEFs without infection...
February 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26981206/high-levels-of-homocysteine-downregulate-apolipoprotein-e-expression-via-nuclear-factor-kappa-b
#15
Violeta G Trusca, Adina D Mihai, Elena V Fuior, Ioana M Fenyo, Anca V Gafencu
AIM: To investigate the effect of high homocysteine (Hcy) levels on apolipoprotein E (apoE) expression and the signaling pathways involved in this gene regulation. METHODS: Reverse transcriptase polymerase chain reaction (RT-PCR) and Western blot were used to assess apoE expression in cells treated with various concentrations (50-500 μmol/L) of Hcy. Calcium phosphate-transient transfections were performed in HEK-293 and RAW 264.7 cells to evaluate the effect of Hcy on apoE regulatory elements [promoter and distal multienhancer 2 (ME2)]...
February 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26981205/arctic-ground-squirrel-neuronal-progenitor-cells-resist-oxygen-and-glucose-deprivation-induced-death
#16
Kelly L Drew, Matthew Wells, Rebecca McGee, Austin P Ross, Judith Kelleher-Andersson
AIM: To investigate the influence of ischemia/reperfusion on arctic ground squirrel (AGS) neuronal progenitor cells (NPCs), we subjected these cultured cells to oxygen and glucose deprivation. METHODS: AGS NPCs were expanded and differentiated into NPCs and as an ischemia vulnerable control, commercially available human NPCs (hNPCs) were seeded from thawed NPCs. NPCs, identified by expression of TUJ1 were seen at 14-21 d in vitro (DIV). Cultures were exposed to control conditions, hypoxia, oxygen and glucose deprivation or glucose deprivation alone or following return to normal conditions to model reperfusion...
February 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26981204/engineered-magnetic-core-shell-nanoprobes-synthesis-and-applications-to-cancer-imaging-and-therapeutics
#17
REVIEW
Samir Mandal, Keya Chaudhuri
Magnetic core shell nanoparticles are composed of a highly magnetic core material surrounded by a thin shell of desired drug, polymer or metal oxide. These magnetic core shell nanoparticles have a wide range of applications in biomedical research, more specifically in tissue imaging, drug delivery and therapeutics. The present review discusses the up-to-date knowledge on the various procedures for synthesis of magnetic core shell nanoparticles along with their applications in cancer imaging, drug delivery and hyperthermia or cancer therapeutics...
February 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26981203/regulation-of-rna-binding-proteins-in-trypanosomatid-protozoan-parasites
#18
REVIEW
María Albertina Romaniuk, Gabriela Cervini, Alejandro Cassola
Posttranscriptional mechanisms have a critical role in the overall outcome of gene expression. These mechanisms are especially relevant in protozoa from the genus Trypanosoma, which is composed by death threatening parasites affecting people in Sub-saharan Africa or in the Americas. In these parasites the classic view of regulation of transcription initiation to modulate the products of a given gene cannot be applied. This is due to the presence of transcription start sites that give rise to long polycistronic units that need to be processed costranscriptionally by trans-splicing and polyadenylation to give mature monocistronic mRNAs...
February 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26981202/development-of-regional-specificity-of-spinal-and-medullary-dorsal-horn-neurons
#19
REVIEW
Yu-Feng Xie, Xing-Hong Jiang, Barry J Sessle, Xian-Min Yu
Extensive studies have focused on the development and regionalization of neurons in the central nervous system (CNS). Many genes, which play crucial roles in the development of CNS neurons, have been identified. By using the technique "direct reprogramming", neurons can be produced from multiple cell sources such as fibroblasts. However, understanding the region-specific regulation of neurons in the CNS is still one of the biggest challenges in the research field of neuroscience. Neurons located in the trigeminal subnucleus caudalis (Vc) and in the spinal dorsal horn (SDH) play crucial roles in pain and sensorimotor functions in the orofacial and other somatic body regions, respectively...
February 26, 2016: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26981201/api2-malt1-oncoprotein-promotes-lymphomagenesis-via-unique-program-of-substrate-ubiquitination-and-proteolysis
#20
REVIEW
Shaun Rosebeck, Megan S Lim, Kojo S J Elenitoba-Johnson, Linda M McAllister-Lucas, Peter C Lucas
Lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma) is the most common extranodal B cell tumor and accounts for 8% of non-Hodgkin's lymphomas. Gastric MALT lymphoma is the best-studied example and is a prototypical neoplasm that occurs in the setting of chronic inflammation brought on by persistent infection or autoimmune disease. Cytogenetic abnormalities are commonly acquired during the course of disease and the most common is chromosomal translocation t(11;18)(q21;q21), which creates the API2-MALT1 fusion oncoprotein...
February 26, 2016: World Journal of Biological Chemistry
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