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https://www.readbyqxmd.com/read/29786969/hippocampal-lipidome-and-transcriptome-profile-alterations-triggered-by-acute-exposure-of-mice-to-gsm-1800-mhz-mobile-phone-radiation-an-exploratory-study
#1
Adamantia F Fragopoulou, Alexandros Polyzos, Maria-Despoina Papadopoulou, Anna Sansone, Areti K Manta, Evangelos Balafas, Nikolaos Kostomitsopoulos, Aikaterini Skouroliakou, Chryssostomos Chatgilialoglu, Alexandros Georgakilas, Dimitrios J Stravopodis, Carla Ferreri, Dimitris Thanos, Lukas H Margaritis
BACKGROUND: The widespread use of wireless devices during the last decades is raising concerns about adverse health effects of the radiofrequency electromagnetic radiation (RF-EMR) emitted from these devices. Recent research is focusing on unraveling the underlying mechanisms of RF-EMR and potential cellular targets. The "omics" high-throughput approaches are powerful tools to investigate the global effects of RF-EMR on cellular physiology. METHODS: In this work, C57BL/6 adult male mice were whole-body exposed (nE xp  = 8) for 2 hr to GSM 1800 MHz mobile phone radiation at an average electric field intensity range of 4...
May 22, 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29786804/-protein-deficiency-a-rare-nutrient-deficiency
#2
Gunnar Johansson
There is a widespread myth that we have to be careful about what we eat so that we do not cause protein deficiency. We know today that it is virtually impossible to design a calorie-sufficient diet, whether it is based on meat, fish, eggs, various vegetarian diets or even unprocessed whole natural plant foods, which is lacking in protein and any of the amino acids. The body is capable of taking incomplete proteins and making them complete by utilizing the amino acid recycling mechanism. The majority of amino acids absorbed from the intestinal tract are derived from recycled body protein...
May 21, 2018: Läkartidningen
https://www.readbyqxmd.com/read/29786048/cardiac-hypertrophy-is-positively-regulated-by-microrna-24-in-ratsmicrorna-24
#3
Juan Gao, Min Zhu, Rui-Feng Liu, Jian-Shu Zhang, Ming Xu
Background: MicroRNA-24 (miR-24) plays an important role in heart failure by reducing the efficiency of myocardial excitation-contraction coupling. Prolonged cardiac hypertrophy may lead to heart failure, but little is known about the role of miR-24 in cardiac hypertrophy. This study aimed to preliminarily investigate the function of miR-24 and its mechanisms in cardiac hypertrophy. Methods: Twelve Sprague-Dawley rats with a body weight of 50 ± 5 g were recruited and randomly divided into two groups: a transverse aortic constriction (TAC) group and a sham surgery group...
June 5, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29785744/fumonisin-b1-actuates-oxidative-stress-associated-colonic-damage-via-apoptosis-and-autophagy-activation-in-murine-model
#4
Sang Ho Kim, Mahendra Pal Singh, Chanchal Sharma, Sun Chul Kang
In the present study, we investigated the cytotoxic mechanism of Fumonisin B1 (FB1) in mice colonic region in a time course manner. Herein, after consecutive 4 days of exposure to FBI (2.5 mg/kg body weight), we observed disintegration of mice colon, as evidenced by histopathological analysis. FB1 significantly increased alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase activities in serum and plasma, decreased ceramide level, increased sphinganine level, and increased lipid peroxidase level along with the breakdown of the antioxidant system...
May 22, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29785640/switching-from-high-fat-diet-to-foods-containing-resveratrol-as-a-calorie-restriction-mimetic-changes-the-architecture-of-arcuate-nucleus-to-produce-more-newborn-anorexigenic-neurons
#5
Maryam Safahani, Hadi Aligholi, Farshid Noorbakhsh, Mahmoud Djalali, Hamideh Pishva, Sayed Mostafa Modarres Mousavi, Leila Alizadeh, Ali Gorji, Fariba Koohdani
PURPOSE: These days, obesity threatens the health for which one of the main interventions is calorie restriction (CR). Due to the difficulty of compliance with this treatment, CR mimetics such as resveratrol (RSV) have been considered. The present study compared the effects of RSV and CR on hypothalamic remodeling in a diet-switching experiment. METHODS: C57BL/6 male mice received high-fat diet (HFD) for 4 weeks, subsequently their diet switched to chow diet, HFD + RSV, chow diet + RSV or CR diet for a further 6 weeks...
May 21, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29785105/development-and-blood-compatibility-assessment-of-electrospun-polyvinyl-alcohol-blended-with-metallocene-polyethylene-and-plectranthus-amboinicus-pva-mpe-pa-for-bone-tissue-engineering
#6
Jie Qi, Huang Zhang, Yingzhou Wang, Mohan Prasath Mani, Saravana Kumar Jaganathan
Introduction: Currently, the design of extracellular matrix (ECM) with nanoscale properties in bone tissue engineering is challenging. For bone tissue engineering, the ECM must have certain properties such as being nontoxic, highly porous, and should not cause foreign body reactions. Materials and methods: In this study, the hybrid scaffold based on polyvinyl alcohol (PVA) blended with metallocene polyethylene (mPE) and plectranthus amboinicus (PA) was fabricated for bone tissue engineering via electrospinning...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29784876/chca-1-is-a-copper-regulated-ctr1-homolog-required-for-normal-development-copper-accumulation-and-copper-sensing-behavior-in-caenorhabditis-elegans
#7
Sai Yuan, Anuj Kumar Sharma, Alexandria Richart, Jaekwon Lee, Byung-Eun Kim
Copper (Cu) plays key roles in catalytic and regulatory biochemical reactions essential for normal growth, development, and health. Dietary Cu deficiencies or mutations in Cu homeostasis genes can lead to abnormal musculoskeletal development, cognitive disorders, and poor growth. In yeast and mammals, Cu is acquired through the activities of the Ctr1 family of high-affinity Cu transporters. However, the mechanisms of systemic responses to dietary or tissue-specific Cu deficiency remain unclear. Here, taking advantage of the animal model Caenorhabditis elegans for studying whole-body Cu homeostasis, we investigated the role of a C...
May 21, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29784867/patient-beliefs-and-attitudes-to-taking-statins-systematic-review-of-qualitative-studies
#8
Angela Ju, Camilla S Hanson, Emily Banks, Rosemary Korda, Jonathan C Craig, Tim Usherwood, Peter MacDonald, Allison Tong
BACKGROUND: Statins are effective in preventing cardiovascular disease (CVD) events and are recommended for at-risk individuals but estimated adherence rates are low. AIM: To describe patients' perspectives, experiences, and attitudes towards taking statins. DESIGN AND SETTING: Systematic review of qualitative studies reporting perspectives of patients on statins. METHOD: PsycINFO, CINAHL, Embase, MEDLINE, and PhD dissertations from inception to 6 October 2016 were searched for qualitative studies on adult patients' perspectives on statins...
May 21, 2018: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/29784820/efficient-collective-swimming-by-harnessing-vortices-through-deep-reinforcement-learning
#9
Siddhartha Verma, Guido Novati, Petros Koumoutsakos
Fish in schooling formations navigate complex flow fields replete with mechanical energy in the vortex wakes of their companions. Their schooling behavior has been associated with evolutionary advantages including energy savings, yet the underlying physical mechanisms remain unknown. We show that fish can improve their sustained propulsive efficiency by placing themselves in appropriate locations in the wake of other swimmers and intercepting judiciously their shed vortices. This swimming strategy leads to collective energy savings and is revealed through a combination of high-fidelity flow simulations with a deep reinforcement learning (RL) algorithm...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784777/structure-of-an-eiic-sugar-transporter-trapped-in-an-inward-facing-conformation
#10
Zhenning Ren, Jumin Lee, Mahdi Muhammad Moosa, Yin Nian, Liya Hu, Zhichun Xu, Jason G McCoy, Allan Chris M Ferreon, Wonpil Im, Ming Zhou
The phosphoenolpyruvate-dependent phosphotransferase system (PTS) transports sugar into bacteria and phosphorylates the sugar for metabolic consumption. The PTS is important for the survival of bacteria and thus a potential target for antibiotics, but its mechanism of sugar uptake and phosphorylation remains unclear. The PTS is composed of multiple proteins, and the membrane-embedded Enzyme IIC (EIIC) component transports sugars across the membrane. Crystal structures of two members of the glucose superfamily of EIICs, bcChbC and bcMalT, were solved in the inward-facing and outward-facing conformations, and the structures suggest that sugar translocation could be achieved by movement of a structured domain that contains the sugar-binding site...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784774/physiology-underlies-the-assembly-of-ecological-communities
#11
Denon Start, Shannon McCauley, Benjamin Gilbert
Trait-based community ecology promises an understanding of the factors that determine species abundances and distributions across habitats. However, ecologists are often faced with large suites of potentially important traits, making generalizations across ecosystems and species difficult or even impossible. Here, we hypothesize that key traits structuring ecological communities may be causally dependent on common physiological mechanisms and that elucidating these mechanisms can help us understand the distributions of traits and species across habitats...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784764/links-between-immunologic-memory-and-metabolic-cycling
#12
REVIEW
Matthew A Cottam, Hana A Itani, Arch A Beasley, Alyssa H Hasty
Treatments for metabolic diseases, such as diet and therapeutics, often provide short-term therapy for metabolic stressors, but relapse is common. Repeated bouts of exposure to, and relief from, metabolic stimuli results in a phenomenon we call "metabolic cycling." Recent human and rodent data suggest metabolic cycling promotes an exaggerated response and ultimately worsened metabolic health. This is particularly evident with cycling of body weight and hypertension. The innate and adaptive immune systems have a profound impact on development of metabolic disease, and current data suggest that immunologic memory may partially explain this association, especially in the context of metabolic cycling...
June 1, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29784759/of-what-use-is-connectomics-a-personal-perspective-on-the-drosophila-connectome
#13
REVIEW
Ian A Meinertzhagen
The brain is a network of neurons and its biological output is behaviour. This is an exciting age, with a growing acknowledgement that the comprehensive compilation of synaptic circuits densely reconstructed in the brains of model species is now both technologically feasible and a scientifically enabling possibility in neurobiology, much as 30 years ago genomics was in molecular biology and genetics. Implemented by huge advances in electron microscope technology, especially focused ion beam-scanning electron microscope (FIB-SEM) milling (see Glossary), image capture and alignment, and computer-aided reconstruction of neuron morphologies, enormous progress has been made in the last decade in the detailed knowledge of the actual synaptic circuits formed by real neurons, in various brain regions of the fly Drosophila It is useful to distinguish synaptic pathways that are major, with 100 or more presynaptic contacts, from those that are minor, with fewer than about 10; most neurites are both presynaptic and postsynaptic, and all synaptic sites have multiple postsynaptic dendrites...
May 20, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29784654/preliminary-study-into-the-skeletal-injuries-sustained-to-the-spine-from-posterior-non-perforating-ballistic-impacts-into-body-armour
#14
Rosalind M Jennings, C Malbon, F Brock, S E Harrisson, D J Carr
INTRODUCTION: The aim of this paper was to examine any injuries from posterior behind armour blunt trauma ballistic impacts directly over the spine onto typical hard body armours. Due to the spine being close to the surface of the skin and a lack of any previous specific research into this topic, this study was designed to gain preliminary insight into the mechanisms involved and injuries caused. Pigs were chosen as the closest representative of human spine, tissue and skin, although their spines are deeper under the surface than humans...
May 21, 2018: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/29784272/design-and-synthesis-of-new-antitumor-agents-with-the-1-7-epoxycyclononane-framework-study-of-their-anticancer-action-mechanism-by-a-model-compound
#15
Ángel M Montaña, Julia Lorenzo, Stefano Ponzano, Maria-Filomena Sanasi
This article describes the design, synthesis and biological evaluation of a new family of antitumor agents having the 1,7-epoxycyclononane framework. We have developed a versatile synthetic methodology that allows the preparation of a chemical library with structural diversity and in good yield. The synthetic methodology has been scaled up to the multigram level and can be developed in an enantioselective fashion. The study in vitro of a model compound, in front of the cancer cell lines HL-60 and MCF-7, showed a growth inhibitory effect better than that of cisplatin...
May 18, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29784012/treatment-of-experimental-colitis-by-endometrial-regenerative-cells-through-regulation-of-b-lymphocytes-in-mice
#16
Xiaoxi Xu, Yong Wang, Baoren Zhang, Xu Lan, Shanzheng Lu, Peng Sun, Xiang Li, Ganggang Shi, Yiming Zhao, Hongqiu Han, Caigan Du, Hao Wang
BACKGROUND: Endometrial regenerative cells (ERCs), a novel type of mesenchymal-like stem cell derived from menstrual blood, have been recently evaluated as an attractive candidate source in ulcerative colitis (UC); however, the mechanism is not fully understood. The present study was designed to investigate the effects of ERCs, especially on B-cell responses in UC. METHODS: In this study, colitis was induced by administering 3% dextran sodium sulfate (DSS) via free drinking water for 7 days to BALB/c mice...
May 22, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29783713/microfluidic-cultivation-and-laser-tweezers-raman-spectroscopy-of-e-coli-under-antibiotic-stress
#17
Zdeněk Pilát, Silvie Bernatová, Jan Ježek, Johanna Kirchhoff, Astrid Tannert, Ute Neugebauer, Ota Samek, Pavel Zemánek
Analyzing the cells in various body fluids can greatly deepen the understanding of the mechanisms governing the cellular physiology. Due to the variability of physiological and metabolic states, it is important to be able to perform such studies on individual cells. Therefore, we developed an optofluidic system in which we precisely manipulated and monitored individual cells of Escherichia coli . We tested optical micromanipulation in a microfluidic chamber chip by transferring individual bacteria into the chambers...
May 18, 2018: Sensors
https://www.readbyqxmd.com/read/29783088/evaluation-of-genotoxicity-and-mutagenic-effects-of-vector-dna-nanocomplexes-in-transfected-mesenchymal-stem-cells-by-flow-cytometry
#18
Alireza Nomani, Xuguang Chen, Arash Hatefi
In recent years, there has been a great deal of interest in ex-vivo genetic modification of mesenchymal stem cells (MSCs) to meet various biomedical needs. Considering the self-renewal potential of MSCs, it is critically important to ensure that transfection vectors (gene carriers) do not induce genotoxicity because they could theoretically turn a single stem cell into a cancer-initiating cell. Unfortunately, there is currently no reliable, unbiased, and quantitative method to measure genotoxicity (micronuclei formation) of gene carriers directly in transfected MSCs...
May 18, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29783019/total-flavonoid-extract-of-epimedium-herb-increases-the-peak-bone-mass-of-young-rats-involving-enhanced-activation-of-the-ac10-camp-pka-creb-pathway
#19
Hui-Rong Xi, Hui-Ping Ma, Fang-Fang Yang, Yu-Hai Gao, Jian Zhou, Yuan-Yuan Wang, Wen-Yuan Li, Cory J Xian, Ke-Ming Chen
ETHNOPHARMACOLOGICAL RELEVANCE: Epimedium sagittatum brevicornum Maxim. is an important traditional Chinese herb that has long been used to promote bone fracture healing and treat osteoporosis. AIM OF THE STUDY: Achieving peak bone mass by adolescence has now been accepted to be fundamental for preventing osteoporosis in adulthood life. This study investigated the possibility of increasing peak bone mass in young rats using the total flavonoid extract of Epimedium herb (TFE)...
May 18, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29782617/patient-specific-neurosurgical-phantom-assessment-of-visual-quality-accuracy-and-scaling-effects
#20
Felipe Wilker Grillo, Victor Hugo Souza, Renan Hiroshi Matsuda, Carlo Rondinoni, Theo Zeferino Pavan, Oswaldo Baffa, Helio Rubens Machado, Antonio Adilton Oliveira Carneiro
Background: Training in medical education depends on the availability of standardized materials that can reliably mimic the human anatomy and physiology. One alternative to using cadavers or animal bodies is to employ phantoms or mimicking devices. Styrene-ethylene/butylene-styrene (SEBS) gels are biologically inert and present tunable properties, including mechanical properties that resemble the soft tissue. Therefore, SEBS is an alternative to develop a patient-specific phantom, that provides real visual and morphological experience during simulation-based neurosurgical training...
2018: 3D printing in medicine
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