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https://www.readbyqxmd.com/read/27921270/halogenated-indoles-eradicate-bacterial-persister-cells-and-biofilms
#1
Jin-Hyung Lee, Yong-Guy Kim, Giyeon Gwon, Thomas K Wood, Jintae Lee
The emergence of antibiotic resistance has necessitated new therapeutic approaches to combat recalcitrant bacterial infections. Persister cells, often found in biofilms, are metabolically dormant, and thus, are highly tolerant to all traditional antibiotics and represent a major drug resistance mechanism. In the present study, 36 diverse indole derivatives were investigated with the aim of identifying novel compounds that inhibit persisters and biofilm formation by Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus...
December 2016: AMB Express
https://www.readbyqxmd.com/read/27921031/amniotic-epithelial-cells-a-new-tool-to-combat-aging-and-age-related-diseases
#2
Clara Di Germanio, Michel Bernier, Rafael de Cabo, Barbara Barboni
The number of elderly people is growing at an unprecedented rate and this increase of the aging population is expected to have a direct impact on the incidence of age-related diseases and healthcare-associated costs. Thus, it is imperative that new tools are developed to fight and slow age-related diseases. Regenerative medicine is a promising strategy for the maintenance of health and function late in life; however, stem cell-based therapies face several challenges including rejection and tumor transformation...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27919449/nonsteroidal-anti-inflammatory-drugs-may-affect-cytokine-response-and-benefit-healing-of-combat-related-extremity-wounds
#3
Felipe A Lisboa, Matthew J Bradley, Matthew T Hueman, Seth A Schobel, Beverly J Gaucher, Edda L Styrmisdottir, Benjamin K Potter, Jonathan A Forsberg, Eric A Elster
BACKGROUND: After adequate operative debridement and antimicrobial therapies, combat-related extremity wounds that either heal or fail are both associated with a distinct inflammatory response. Short-term use of nonsteroidal anti-inflammatory drugs in postoperative pain management may affect this response and, by consequence, the healing potential of these wounds. We investigated whether patients treated with nonsteroidal anti-inflammatory drugs had a distinct inflammatory response; different rates of critical colonization, defined as >10(5) colony forming units on quantitative bacteriology; and healing potential...
December 2, 2016: Surgery
https://www.readbyqxmd.com/read/27918879/auditory-hallucinations-and-ptsd-in-ex-pows
#4
Laura Crompton, Yael Lahav, Zahava Solomon
Literature has suggested that auditory hallucinations might be prevalent in the general population and could be linked to the experience of trauma. This prospective study examines the prevalence of auditory hallucinations in trauma survivors and its association with posttraumatic stress disorder (PTSD) symptoms, over time. Former prisoners-of-war (ex-POWs) from the 1973 Yom Kippur War (n = 99) with and without PTSD and comparable veterans (n = 103) were assessed twice, in 1991 (T1) and 2003 (T2) in regards to auditory hallucinations and PTSD symptoms...
December 5, 2016: Journal of Trauma & Dissociation
https://www.readbyqxmd.com/read/27918230/mechanisms-of-cross-talk-between-the-diet-the-intestinal-microbiome-and-the-undernourished-host
#5
Helene Velly, Robert A Britton, Geoffrey A Preidis
Undernutrition remains one of the most pressing global health challenges today, contributing to nearly half of all deaths in children under five years of age. Although insufficient dietary intake and environmental enteric dysfunction are often inciting factors, evidence now suggests that unhealthy gut microbial populations perpetuate the vicious cycle of pathophysiology that results in persistent growth impairment in children. The metagenomics era has facilitated new research identifying an altered microbiome in undernourished hosts and has provided insight into a number of mechanisms by which these alterations may affect growth...
December 5, 2016: Gut Microbes
https://www.readbyqxmd.com/read/27917972/pastoralism-in-the-drylands-of-latin-america-argentina-chile-mexico-and-peru
#6
J M Grünwaldt, G Castellaro, E R Flores, C R Morales-Nieto, R D Valdez-Cepeda, J C Guevera, E G Grünwaldt
This article discusses various aspects of pastoralism in the Latin American countries with the largest dryland areas. The topics covered include: social, economic and institutional issues; grasslands and their carrying capacity; production systems and productivity rates; competition for forage resources between domestic livestock and wildlife; and the health status of livestock and wildlife. Most grasslands exhibit some degree of degradation. The percentage of offspring reaching weaning age is low: 47-66% of calves and 40-80% of lambs...
November 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/27917619/practical-guidance-on-the-use-of-olaparib-capsules-as-maintenance-therapy-for-women-with-brca-mutations-and-platinum-sensitive-recurrent-ovarian-cancer
#7
REVIEW
Michael Friedlander, Susana Banerjee, Linda Mileshkin, Clare Scott, Catherine Shannon, Jeffrey Goh
Olaparib is the first oral poly(ADP-ribose) polymerase inhibitor to be approved as maintenance monotherapy for treatment of patients with platinum-sensitive relapsed BRCA-mutated (BRCAm) serous ovarian cancer. This review provides practical guidance on the use of olaparib (capsule formulation) in the maintenance setting. The article focuses on the key toxicities that can arise with olaparib therapy and recommendations for their management. Nausea, vomiting, fatigue and anemia are the most commonly reported adverse events in olaparib clinical trials and are generally mild to moderate and transient in nature in most patients...
December 2016: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27917452/epidemiology-of-muay-thai-fight-related-injuries
#8
Stephen Strotmeyer, Jeffrey H Coben, Anthony Fabio, Thomas Songer, Maria Brooks
BACKGROUND: Muay Thai is a combat sport of Thailand that uses stand-up striking along with various clinching techniques. Currently, little is known about the injuries and risk factors for injuries among Muay Thai fighters. Gaining more insight into the nature and frequency of injury in this sport provides part of the overall sports injury picture, within the larger burden of injury as a public health issue. Generating this information is a critical first step toward the broader goal of improving the health and safety of Muay Thai fighters engaged in competition...
December 2016: Injury Epidemiology
https://www.readbyqxmd.com/read/27917363/future-therapy-for-hepatitis-b-virus-role-of-immunomodulators
#9
REVIEW
Edward A Pham, Ryan B Perumpail, Benjamin J Fram, Jeffrey S Glenn, Aijaz Ahmed, Robert G Gish
Although currently available therapies for chronic hepatitis B virus infection can suppress viremia and provide long-term benefits for patients, they do not lead to a functional cure for most patients. Advances in our understanding of the virus-host interaction and the recent remarkable success of immunotherapy in cancer offer new and promising strategies for developing immune modulators that may become important components of a total therapeutic approach to hepatitis B, some of which are now in clinical development...
2016: Current Hepatology Reports
https://www.readbyqxmd.com/read/27916925/microbial-biofilms-in-urinary-tract-infections-and-prostatitis-etiology-pathogenicity-and-combating-strategies
#10
REVIEW
Cristina Delcaru, Ionela Alexandru, Paulina Podgoreanu, Mirela Grosu, Elisabeth Stavropoulos, Mariana Carmen Chifiriuc, Veronica Lazar
Urinary tract infections (UTIs) are one of the most important causes of morbidity and health care spending affecting persons of all ages. Bacterial biofilms play an important role in UTIs, responsible for persistent infections leading to recurrences and relapses. UTIs associated with microbial biofilms developed on catheters account for a high percentage of all nosocomial infections and are the most common source of Gram-negative bacteremia in hospitalized patients. The purpose of this mini-review is to present the role of microbial biofilms in the etiology of female UTI and different male prostatitis syndromes, their consequences, as well as the challenges for therapy...
November 30, 2016: Pathogens
https://www.readbyqxmd.com/read/27916740/development-of-europium-doped-core-shell-silica-cobalt-ferrite-functionalized-nanoparticles-for-magnetic-resonance-imaging
#11
Bhavesh D Kevadiya, Aditya N Bade, Christopher Woldstad, Benson J Edagwa, JoEllyn M McMillan, Balasrinivasa R Sajja, Michael D Boska, Howard E Gendelman
: The size, shape and chemical composition of europium (Eu(3+)) cobalt ferrite (CFEu) nanoparticles were optimized for use as a "multimodal imaging nanoprobe" for combined fluorescence and magnetic resonance bioimaging. Doping Eu(3+) ions into a CF structure imparts unique bioimaging and magnetic properties to the nanostructure that can be used for real-time screening of targeted nanoformulations for tissue biodistribution assessment. The CFEu nanoparticles (size ∼7.2 nm) were prepared by solvothermal techniques and encapsulated into poloxamer 407-coated mesoporous silica (Si-P407) to form superparamagnetic monodisperse Si-CFEu nanoparticles with a size of ∼ 140 nm...
December 1, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27915415/exendin-4-protects-huvecs-from-tunicamycin-induced-apoptosis-via-inhibiting-the-ire1a-jnk-caspase-3-pathway
#12
Li Wu, XiaoYing Liu, LinXi Wang, YanPing Wang, LiJing Wang, BinBin Guan, Zhou Chen, LiBin Liu
PURPOSE: The abnormal increase of apoptosis of endothelial cells induced by endoplasmic reticulum stress is a significant factor for vascular disease, especially for atherosclerosis. Protecting endothelial cells from endoplasmic reticulum stress is a crucial strategies to combate these diseases. The goal of this study was to explore the effect of Exendin-4, a glucagon-like peptide-1 receptor agonist, on tunicamycin-induced apoptosis in human umbilical vein endothelial cells. METHODS: All studies were performed in primary human umbilical vein endothelial cells treated with tunicamycin with or without Exendin-4 pretreatment...
December 3, 2016: Endocrine
https://www.readbyqxmd.com/read/27915046/dna-damage-related-crosstalk-between-the-nucleus-and-mitochondria
#13
Mohammad Saki, Aishwarya Prakash
The electron transport chain is the primary pathway by which a cell generates energy in the form of ATP. Byproducts of this process produce reactive oxygen species that can cause damage to mitochondrial DNA. If not properly repaired, the accumulation of DNA damage can lead to mitochondrial dysfunction linked to several human disorders including neurodegenerative diseases and cancer. Mitochondria are able to combat oxidative DNA damage via repair mechanisms that are analogous to those found in the nucleus. Of the repair pathways currently reported in the mitochondria, the base excision repair pathway is the most comprehensively described...
November 30, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27914879/what-can-animal-research-tell-us-about-the-link-between-androgens-and-social-competition-in-humans
#14
REVIEW
Matthew J Fuxjager, Brian C Trainor, Catherine A Marler
The relationship between androgenic hormones, like testosterone (T), and aggression is extensively studied in human populations. Yet, while this work has illuminated a variety of principals regarding the behavioral and phenotypic effects of T, it is also hindered by inherent limitations of performing research on people. In these instances, animal research can be used to gain further insight into the complex mechanisms by which T influences aggression. Here, we explore recent studies on T and aggression in numerous vertebrate species, although we focus primarily on males and on a New World rodent called the California mouse (Peromyscus californicus)...
November 30, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27912845/molecular-mechanisms-and-clinical-implications-of-bacterial-persistence
#15
Joran Elie Michiels, Bram Van den Bergh, Natalie Verstraeten, Jan Michiels
Any bacterial population harbors a small number of phenotypic variants that survive exposure to high concentrations of antibiotic. Importantly, these so-called 'persister cells' compromise successful antibiotic therapy of bacterial infections and are thought to contribute to the development of antibiotic resistance. Intriguingly, drug-tolerant persisters have also been identified as a factor underlying failure of chemotherapy in tumor cell populations. Recent studies have begun to unravel the complex molecular mechanisms underlying persister formation and revolve around stress responses and toxin-antitoxin modules...
November 2016: Drug Resistance Updates: Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy
https://www.readbyqxmd.com/read/27912826/diagnosis-and-treatment-of-anaplastic-lymphoma-kinase-positive-non-small-cell-lung-cancer
#16
REVIEW
Kathryn C Arbour, Gregory J Riely
Anaplastic lymphoma kinase (ALK) gene rearrangements occur in a small portion of patients with non-small cell lung cancer (NSCLC). These gene rearrangements lead to constitutive activation of the ALK kinase and subsequent ALK-driven tumor formation. Patients with tumors harboring such rearrangements are highly sensitive to ALK inhibitors, such as crizotinib, ceritinib, and alectinib. Resistance to these kinase inhibitors occurs through several mechanisms, resulting in ongoing clinical challenges. This review summarizes the biology of ALK-positive lung cancer, methods for diagnosing ALK-positive NSCLC, current FDA-approved ALK inhibitors, mechanisms of resistance to ALK inhibition, and potential strategies to combat resistance...
February 2017: Hematology/oncology Clinics of North America
https://www.readbyqxmd.com/read/27911955/scholarly-context-adrift-three-out-of-four-uri-references-lead-to-changed-content
#17
Shawn M Jones, Herbert Van de Sompel, Harihar Shankar, Martin Klein, Richard Tobin, Claire Grover
Increasingly, scholarly articles contain URI references to "web at large" resources including project web sites, scholarly wikis, ontologies, online debates, presentations, blogs, and videos. Authors reference such resources to provide essential context for the research they report on. A reader who visits a web at large resource by following a URI reference in an article, some time after its publication, is led to believe that the resource's content is representative of what the author originally referenced...
2016: PloS One
https://www.readbyqxmd.com/read/27911230/bromodomain-inhibitors-and-cancer-therapy-from-structures-to-applications
#18
Montserrat Pérez-Salvia, Manel Esteller
Aberrations in the epigenetic landscape are a hallmark of cancer. Alterations in enzymes that are "writers", "erasers", or "readers" of histone modification marks are common. Bromodomains are "readers" that bind acetylated lysines in histone tails. Their most important function is the regulation of gene transcription by the recruitment of different molecular partners. Moreover, proteins containing bromodomains are also epigenetic regulators, although little is known about the specific function of these domains...
December 2, 2016: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/27910045/synthesis-of-modified-mrna-for-myocardial-delivery
#19
Jason Kondrat, Nishat Sultana, Lior Zangi
Cardiac gene therapy shows tremendous promise in combating the growing problem of heart disease. Modified mRNA (modRNA) is a novel gene delivery system used in vitro or in vivo to achieve transient expression of therapeutic proteins in a heterogeneous population of cells. Incorporation of specific modified nucleosides enables modRNA to be translated efficiently without triggering antiviral and innate immune responses. ModRNA has been shown to be effective at delivering short-term robust gene expression to the heart and its use in the field of cardiac gene therapy is expanding...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27909545/world-atrial-fibrillation-awareness-day-creating-grassroots-level-awareness-to-combat-a-global-scourge
#20
EDITORIAL
Dhanunjaya Lakkireddy Md, Andrea Natale Md
No abstract text is available yet for this article.
August 2016: Journal of Atrial Fibrillation
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