650,133 results match your criteria Acta Obstetricia et Gynecologica Scandinavica[Journal]


Two coumarin-based turn-on fluorescent probes based on for hypochlorous acid detection and imaging in living cells.

Spectrochim Acta A Mol Biomol Spectrosc 2018 Dec 10;211:239-245. Epub 2018 Dec 10.

School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, Jiangsu 224051, People's Republic of China.

This work, two turn-on fluorescent probes (3-acetyl-2H-chromen-2-one (ACO) & (1E)-1-(1-(2-oxo-2H-chromen-3-yl)ethylidene)thiosemicarbazide (CETC)) based on coumarin have been designed and synthesized, which could selectively and sensitively recognize ClO with fast response time. ACO &CETC were almost non fluorescent possibly due to both the lacton form of coumarin and unbridged CN bonds which can undergo a nonradiative decay process in the excited state. Upon the addition of ClO, ACO &CETC were oxidized to ring - opened by cleavage the CO and CN and the fluorescence intensity were increased considerably. Read More

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December 2018

Surface plasmon resonance of gold nanoparticles as a colorimetric sensor for indirect detection of Cefixime.

Spectrochim Acta A Mol Biomol Spectrosc 2018 Dec 4;211:234-238. Epub 2018 Dec 4.

Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran. Electronic address:

This study reports a colorimetric sensor with excellent sensitivity to detect Cefixime base on gold nanoparticles. Cefixime is an antibiotic which has a wide range of applications in medicine. Cefixime did not change the surface plasmon resonance bond in gold nanoparticles solution; therefore, there was no change in the color solution of gold nanoparticles. Read More

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December 2018

Ergosterol reduction impairs mitochondrial DNA maintenance in S. cerevisiae.

Biochim Biophys Acta Mol Cell Biol Lipids 2018 Dec 12. Epub 2018 Dec 12.

Department of Biology and Biotechnology "Charles Darwin", La Sapienza University of Rome, Piazzale A. Moro 5, 00185 Rome, Italy.; Pasteur Institute-Cenci Bolognetti Foundation, Viale Regina Elena, 291, 00100 Rome, Italy.. Electronic address:

Sterols are essential lipids, involved in many biological processes. In Saccharomyces cerevisiae, the enzymes of the ergosterol biosynthetic pathway (Erg proteins) are localized in different cellular compartments. With the aim of studying organelle interactions, we discovered that Erg27p resides mainly in Lipid Droplets (LDs) in respiratory competent cells, while in absence of respiration, is found mostly in the ER. Read More

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December 2018

Caffeine-stimulated muscle IL-6 mediates alleviation of non-alcoholic fatty liver disease.

Biochim Biophys Acta Mol Cell Biol Lipids 2018 Dec 12. Epub 2018 Dec 12.

Key Laboratory of Pu-erh Tea Science, the Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, China; Pu'erh Tea Research Institute, Pu'erh, China. Electronic address:

Caffeine intake is associated with a reduced risk developing non-alcoholic fatty liver disease (NAFLD), but the underlying molecular mechanisms remain to be fully elucidated. We report here that caffeine markedly improved high fat diet-induced NAFLD in mice resulting in a 10-fold increase in circulating IL-6 levels, leading to STAT3 activation in the liver. Interestingly, the expression of IL-6 mRNA was not increased in the liver, but increased substantially in the muscles of caffeine-treated mice. Read More

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December 2018
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High-fat diet induces aberrant hepatic lipid secretion in blunt snout bream by activating endoplasmic reticulum stress-associated IRE1/XBP1 pathway.

Biochim Biophys Acta Mol Cell Biol Lipids 2018 Dec 12. Epub 2018 Dec 12.

Key Laboratory of Aquatic Nutrition and Feed Science of Jiangsu Province, College of Animal Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing 210095, People's Republic of China. Electronic address:

This study was conducted to understand the effect of high-fat diet challenge on lipid transport and endoplasmic reticulum stress in blunt snout bream. Ninety fish (average weight: 41.84 ± 0. Read More

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December 2018
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Thermal unfolding of calreticulin. Structural and thermodynamic characterization of the transition.

Biochim Biophys Acta Proteins Proteom 2018 Dec 12. Epub 2018 Dec 12.

Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina; Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), CONICET, Universidad Nacional de Córdoba, Córdoba, Argentina. Electronic address:

Calreticulin (CRT) is a calcium-binding protein that participates in several cellular processes including the control of protein folding and homeostasis of Ca. Its folding, stability and functions are strongly controlled by the presence of Ca. The oligomerization state of CRT is also relevant for its functions. Read More

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December 2018

Enhanced remedial effects for vitamin D and calcium co-supplementation against pre-existing lead nephrotoxicity in mice: The roles of renal calcium homeostatic molecules.

Biochim Biophys Acta Mol Basis Dis 2018 Dec 12. Epub 2018 Dec 12.

Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Al Abdeyah, PO Box 7607, Makkah, Saudi Arabia. Electronic address:

Background: Lead (Pb) is a toxic heavy metal and nephropathy is common with chronic exposure. Although vitamin D (VD) and calcium (Ca) showed promising protections, their co-administration was not previously investigated in Pb nephrotoxicity. This study measured the potential interactions and remedial effects of VD and/or Ca on established Pb nephropathy. Read More

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December 2018

Biology of preeclampsia: Combined actions of angiogenic factors, their receptors and placental proteins.

Biochim Biophys Acta Mol Basis Dis 2018 Dec 12. Epub 2018 Dec 12.

Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria. Electronic address:

Although massive efforts have been undertaken to elucidate the etiology of the pregnancy syndrome preeclampsia, its developmental origin remains a mystery. Most efforts of the last decade have focused on biomarkers to predict and/or diagnose preeclampsia, including the anti-angiogenic factor sFlt-1 (soluble fms-like tyrosin kinase-1), the angiogenic factor PGF (placental growth factor) and PP13 (placental protein 13). The origins of these marker proteins are still under debate, and so far their actions have only been describe separate from each other. Read More

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December 2018

RelA driven co-expression of CXCL13 and CXCR5 is governed by a multifaceted transcriptional program regulating breast cancer progression.

Biochim Biophys Acta Mol Basis Dis 2018 Dec 12. Epub 2018 Dec 12.

Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India. Electronic address:

Lethal metastasis of primary breast tumors to lymph nodes has been found to be associated with the co-expression of chemokine CXCL13 and its receptor CXCR5. To date, however, the precise molecular events regulating the co-expression of CXCL13 and CXCR5 in the context of breast cancer progression have not been identified. Therefore, to extend our understanding of the drivers of breast cancer metastasis, we undertook a line of investigation in this study in which we demonstrate that the transcriptional regulation of CXCL13 is mediated by the reciprocal activity of RelA and Nrf2, while CXCR5 is transcriptionally silenced by CpG island methylation within its promoter. Read More

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December 2018

Bioengineered bladder patches constructed from multilayered adipose-derived stem cell sheets for bladder regeneration.

Acta Biomater 2018 Dec 12. Epub 2018 Dec 12.

Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, 200233 Shanghai, China. Electronic address:

Cell-seeded scaffolds are a common route of cell transplantation for bladder repair and reconstruction. However, when cell suspensions are harvested, proteolytic enzymes often cause extracellular matrix damage and loss of intercellular junctions. To overcome this problem, we developed a bioengineered three-dimensional bladder patch comprising porous scaffolds and multilayered adipose-derived stem cell (ASC) sheets, and evaluated its feasibility for bladder regeneration in a rat model. Read More

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December 2018
2 Reads

Receptor- and store-operated mechanisms of calcium entry during the nanosecond electric pulse-induced cellular response.

Biochim Biophys Acta Biomembr 2018 Dec 12. Epub 2018 Dec 12.

Air Force Research Laboratory, 711th Human Performance Wing, Airman Systems Directorate, Bioeffects Division, Radio Frequency Bioeffects Branch, 4141 Petroleum Road, JBSA Fort Sam Houston, TX 78234, USA.

Nanosecond electric pulses have been shown to open nanopores in the cell plasma membrane by fluorescent imaging of calcium uptake and fluorescent dyes, including propidium (Pr) iodide and YO-PRO-1 (YP). Recently, we demonstrated that nsEPs also induce the phosphoinositide intracellular signaling cascade by phosphatidylinositol‑4,5‑bisphosphate (PIP) depletion resulting in physiological responses similar to those observed following stimulation of G-coupled receptors. In this paper, we explore the role of receptor- and store-operated calcium entry (ROCE/SOCE) mechanisms in the observed response of cells to nsEP. Read More

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December 2018

Mechanisms of Pyrethroid Resistance in Aedes (Stegomyia) aegypti from Colombia.

Acta Trop 2018 Dec 12. Epub 2018 Dec 12.

Centro Internacional de Entrenamiento e Investigaciones Médicas CIDEIM, Carrera 125 N 19-225, Cali, Colombia; Universidad ICESI, Cali,Colombia. Electronic address:

In Colombia Aedes (Stegomyia) aegypti is the main vector of urban arboviruses such as dengue, chikungunya and Zika. This urban mosquito has a well-established capacity to develop insecticide resistance to different types of insecticides (pyrethroids, organochlorides, organophosphates), using multiple resistance mechanisms. An understanding of ongoing resistance mechanisms is critical to determining the activities of vector control programs. Read More

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December 2018

LeishInDB: a web-accessible resource for small molecule inhibitors against Leishmania sp.

Acta Trop 2018 Dec 12. Epub 2018 Dec 12.

Department of Molecular Biology/Bioinformatics Centre, Rajendra Memorial Research Institute of Medical Science, Indian Council for Medical Research, Agamkuan, Patna, Bihar 800007. India.

Despite the availability of drugs to treat Leishmaniasis, various other factors including drug resistance and adverse side effects encourage the researchers to search for new strategies and alternatives for treating Leishmaniasis. Repurposing and devising combination therapy with the existing small molecules would serve as an alternative strategy to address the issue, especially the drug resistance. Hence, here we report LeishInDB, a web-accessible resource of small molecule inhibitors having a varying degree of activity towards Leishmania sp. Read More

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December 2018
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ARBOVIRUS INVESTIGATION IN PATIENTS FROM MATO GROSSO DURING ZIKA AND CHIKUNGUNYA VIRUS INTRODUTION IN BRAZIL, 2015-2016.

Acta Trop 2018 Dec 12. Epub 2018 Dec 12.

Programa de Pós-Graduação em Ciências da Saúde, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso, Av. Fernando Correa da Costa, n. 2367, CCBS-I, sala 82, CEP 78060-900, Cuiabá, Mato Grosso, Brazil. Electronic address:

Arboviruses have become a major public health concern in Brazil, especially after Zika virus (ZIKV) and Chikungunya virus (CHIKV) introduction, leading to massive epidemics. We conducted an investigation of arboviruses in patients with acute febrile illness for less than five days in Mato Grosso state (MT) during the period of ZIKV and CHIKV dissemination in Brazil. To achieve that, 453 human serum samples of patients suspected of Dengue (DENV), Yellow Fever (YFV), ZIKV or CHIKV collected in health units of 31 cities of MT were subjected to RT-PCR protocols for 10 flaviviruses, 5 alphaviruses and orthobunyaviruses from Simbu serogroup, nucleotide sequencing and viral isolation. Read More

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December 2018
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IgG reactivity with 40-35 kDa soluble and membrane antigen of Strongyloides venezuelensis in immunocompromised patients.

Acta Trop 2018 Dec 12. Epub 2018 Dec 12.

Laboratório de Investigação Médica (LIM/06 - Laboratório de Imunopatologia da esquistossomose), Hospital das Clínicas da Faculdade de Medicina, USP, São Paulo, Brazil; Instituto de Medicina Tropical de São Paulo, USP, São Paulo, Brazil.

Immunocompromised patients constitute a risk group for the development of severe clinical forms of human strongyloidiasis. The diagnosis of this infection is primarily performed by parasitological techniques, but with low sensitivity. Serological techniques appear as an alternative, especially with heterologous antigens use. Read More

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December 2018

CSF-ApoER2 fragments as a read-out of reelin signaling: Distinct patterns in sporadic and autosomal-dominant Alzheimer disease.

Clin Chim Acta 2018 Dec 12. Epub 2018 Dec 12.

Instituto de Neurociencias de Alicante, Universidad Miguel Hernández-CSIC, 03550 Sant Joan d'Alacant, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain. Electronic address:

Reelin is a glycoprotein associated with synaptic plasticity and neurotransmission. The malfunctioning of reelin signaling in the brain is likely to contribute to the pathogenesis of Alzheimer's disease (AD). Reelin binding to Apolipoprotein E receptor 2 (ApoER2) activates downstream signaling and induces the proteolytic cleavage of ApoER2, resulting in the generation of soluble fragments. Read More

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December 2018

Patterns of altered regional brain glucose metabolism in borderline personality disorder and bipolar II disorder.

Acta Psychiatr Scand 2018 Dec 15. Epub 2018 Dec 15.

Institute of Clinical Medicine, University of Oslo, Norway.

Objective: The relationship between borderline personality disorder (BPD) and bipolar II disorder (BIP-II) is disputed but understudied. Here, we investigated brain glucose metabolism in these patient groups and healthy control subjects (HCs).

Methods: Sixty-five subjects, 22 BPD (19 females); 22 BIP-II (17 females); 21 HC (14 females) were examined using 2-deoxy-2[18F]-fluoro-d-glucose Positron-Emission Tomography (PET) scanning. Read More

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December 2018

Magnetic-core@dual-functional-shell nanocomposites with peroxidase mimicking properties for use in colorimetric and electrochemical sensing of hydrogen peroxide.

Mikrochim Acta 2018 Dec 14;186(1):20. Epub 2018 Dec 14.

College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.

A self-sacrificing catalytic method is described for the preparation of magnetic core/dual-functional-shell nanocomposites composed of magnetite, gold and Prussian Blue (type FeO@Au-PB). Two reaction pathways are integrated. The first involves chemical dissolution of FeO (the self-sacrificing step) by acid to release ferrous ions which then reacts with hexacyanoferrate(IV) to generate PB in the proximity of the magntic nanoparticles (MNPs). Read More

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December 2018

Water-dispersed fluorescent silicon nanodots as probes for fluorometric determination of picric acid via energy transfer.

Mikrochim Acta 2018 Dec 14;186(1):18. Epub 2018 Dec 14.

Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing, 401331, People's Republic of China.

Water-dispersed fluorescent silicon nanodots (SiNDs) were synthesized by a one-pot hydrothermal method starting from tetraethyl orthosilicate (TEOS) as silicon source and trisodium citrate as reducing reagent. The method is simple and convenient. The SiNDs, with excitation/emission peaks at 347/440 nm and with fluorescence quantum yield of 18% are shown to be viable fluorescent probes for picric acid (PA). Read More

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December 2018

Galvanic displacement-induced codeposition of reduced-graphene-oxide/silver on alloy fibers for non-destructive SPME@SERS analysis of antibiotics.

Mikrochim Acta 2018 Dec 14;186(1):19. Epub 2018 Dec 14.

Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, People's Republic of China.

This work describes the integration of solid-phase microextraction (SPME) and surface-enhanced Raman spectroscopy (SERS) by codeposition of a hybrid consisting of reduced graphene oxide and silver on silver-copper alloy fibers. The morphology and structure of the coating were characterized by a variety of microscopic and spectroscopic techniques that confirmed the hybrid structure of the material. A galvanic-displacement-induced process is assumed to be involved during the codeposition of the hybrid coating on the alloy. Read More

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December 2018

Frey syndrome in a child with neurofibromatosis type 1.

Acta Otorrinolaringol Esp 2018 Dec 11. Epub 2018 Dec 11.

Servicio de Otorrinolaringología, Hospital Clínico Universitario, Universidad de Valencia, Valencia, España.

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December 2018

Rapid determination of 1,3-propanediol in fermentation process based on a novel surface-enhanced Raman scattering biosensor.

Spectrochim Acta A Mol Biomol Spectrosc 2018 Nov 28;211:227-233. Epub 2018 Nov 28.

Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, PR China; College of Science, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address:

The production of 1,3-propanediol (1,3-PDO) is an important fermentation process. However, 1,3-PDO could not be distinguished separately and efficiently in fermentations previously because it has a highly similar molecular structure to the feedstock glycerol (GLY) and by-product lactic acid (Lac), which leads to the difficulty of quantification. In this paper, a low-cost and environmentally friendly biosensor based on surface-enhanced Raman scattering (SERS) technique was developed. Read More

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November 2018

A comparative study of thermal stability of TNT, RDX, CL20 and ANTA explosives using UV 266nm-time resolved photoacoustic pyrolysis technique.

Spectrochim Acta A Mol Biomol Spectrosc 2018 Dec 6;211:212-220. Epub 2018 Dec 6.

Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, 500046, India. Electronic address:

The paper reports the potential use of UV based pulsed photoacoustic spectroscopy to study the thermal stability of some well-known premier explosives such as TNT, RDX, CL20, and ANTA between 30 and 350°C range. The thermal PA spectra of samples were recorded using fourth harmonic wavelength i.e. Read More

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December 2018

Lifting, tasting, and carrying: The interaction of magnitude and valence effects in time perception.

Acta Psychol (Amst) 2018 Dec 11;193:1-10. Epub 2018 Dec 11.

Department of Psychological Sciences, University of Connecticut, USA; Department of Psychology, Gordon College, USA.

Magnitude effects (e.g., heavier or faster is longer) and valence effects (e. Read More

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December 2018

Levels of circulating soluble LR11, a regulator of smooth muscle cell migration, are highly associated with atherosclerotic plaques in patients with carotid artery stenosis.

Clin Chim Acta 2018 Dec 11. Epub 2018 Dec 11.

Department of Clinical-Laboratory and Experimental-Research Medicine, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura 285-8741, Japan. Electronic address:

Background: The levels of plasma sLR11, released from intimal SMCs, are positively associated with intima-media thickness (IMT) in asymptomatic subjects. We have evaluated the yet unknown pathological significance of sLR11 for plaque conditions in patients with carotid artery stenosis.

Methods: The presence of LR11 in carotid plaques was investigated using autopsy specimens. Read More

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December 2018

Pediatric reference intervals for clinical chemistry assays on Siemens ADVIA XPT/1800 and dimension EXL in the CALIPER cohort of healthy children and adolescents.

Clin Chim Acta 2018 Dec 11. Epub 2018 Dec 11.

CALIPER Program, Pediatric Laboratory Medicine, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada; Department of Laboratory Medicine & Pathobiology, Faculty of Medicine, University of Toronto, 1 King's College Cir, Toronto, ON M5S 1A8, Canada. Electronic address:

Introduction: Accurate reference intervals (RIs) are essential for clinical interpretation of laboratory test results; however, major gaps exist in pediatric RIs. The Canadian Laboratory Initiative on Pediatric Reference Intervals (CALIPER) has established age- and sex-specific pediatric RIs on various analytical platforms. The current study expands the CALIPER database by establishing age- and sex-specific RIs for biochemical assays on Siemens ADVIA XPT/1800 and Dimension EXL Systems. Read More

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December 2018

Evaluation of three advanced methodologies, COLD-PCR, microarray and ddPCR, for identifying the mutational status by liquid biopsies in metastatic colorectal cancer patients.

Clin Chim Acta 2018 Dec 11. Epub 2018 Dec 11.

Unit of Genomic for the Diagnosis of Human Pathologies, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, Milan 20132, Italy; Laboratory of Clinical Molecular Biology, IRCCS Ospedale San Raffaele, Milan, Italy; Università Vita-Salute San Raffaele, Milano, Italy.

A major effort has been focused on the detection of oncogenes' mutations in diverse types of clinical specimens including formalin-fixed and paraffin embedded tissues, presently the gold-standard samples, up to plasma, that constitute a noninvasive alternative source of tumor DNA. The reliable detection of mutations in circulating tumor DNA requires a high analytical sensitivity. Here, we applied three different highly sensitive methodologies (COLD-PCR, a microarray-based approach and the droplet digital PCR, ddPCR) to identify mutations in the plasma of 30 metastatic colorectal cancer patients previously genotyped on tissue biopsy. Read More

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December 2018

Self-Assembled GFFYK Peptide Hydrogel Enhances the Therapeutic Efficacy of Mesenchymal Stem Cells in a Mouse Hindlimb Ischemia Model.

Acta Biomater 2018 Dec 11. Epub 2018 Dec 11.

Nankai University School of Medicine, Tianjin 300071, China; The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, The College of Life Science, Tianjin 300071, China. Electronic address:

Mesenchymal stem cell (MSC) transplantation has emerged as a very promising strategy for the treatments of peripheral artery disease (PAD). However, MSC-based therapies are limited by low cell retention and survival rate in the ischemic zone. Small molecular (SM) hydrogels have shown attractive abilities to enhance the therapeutic effects of human MSCs via promoting their proliferation or maintaining their differentiation potential. Read More

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December 2018
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Uridine diphosphate release mechanism in O-N-acetylglucosamine (O-GlcNAc) transferase catalysis.

Biochim Biophys Acta Gen Subj 2018 Dec 11. Epub 2018 Dec 11.

The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, People's Republic of China. Electronic address:

O-linked N-acetylglucosamine transferase (OGT) is an essential enzyme that catalyzes the covalent bonding of N-acetylglucosamine (GlcNAc) to the hydroxyl group of a serine or threonine in the target protein. It plays an important role in many important cellular physiological catalytic reactions. Here, we determine the binding mode and the binding free energy of the OGT product (uridine diphosphate, UDP) as well as the hydrogen-bond-dependent release mechanism using extensive molecular dynamic simulations. Read More

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December 2018

The helix-to-sheet transition of an HIV-1 fusion peptide derivative changes the mechanical properties of lipid bilayer membranes.

Biochim Biophys Acta Biomembr 2018 Dec 11. Epub 2018 Dec 11.

Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at SNS, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America.

A short sequence on the gp41 envelope protein of HIV-1 is integral to infection by the virus. Without this sequence, termed the fusion peptide (FP), the virus is far less effective at fusing with the cellular membrane. One of the interesting features of the isolated FP is that it transitions between an α-helical conformation and a β-sheet conformation in lipid bilayer membranes as a function of lipid composition and concentration, and the transition correlates with fusion. Read More

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December 2018

Peptide antibiotic trichogin in model membranes: Self-association and capture of fatty acids.

Biochim Biophys Acta Biomembr 2018 Dec 11. Epub 2018 Dec 11.

Institute of Chemical Kinetics and Combustion, RAS, Novosibirsk 630090, Russian Federation; Novosibirsk State University, Novosibirsk 630090, Russian Federation. Electronic address:

The antimicrobial action of peptides in bacterial membranes is commonly related to their mode of self-assembling which results in pore formation. To optimize peptide antibiotic use for therapeutic purposes, a study on the concentration dependence of self-assembling process is thus desirable. In this work, we investigate this dependence for peptaibol trichogin GA IV (Tric) in the 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) model membrane in the range of peptide concentrations between 0. Read More

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December 2018
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The role of RNA adenosine demethylases in the control of gene expression.

Biochim Biophys Acta Gene Regul Mech 2018 Dec 11. Epub 2018 Dec 11.

Central European Institute of Technology (CEITEC), Masaryk University, Brno 625 00, Czech Republic. Electronic address:

RNA modifications are being recognized as an essential factor in gene expression regulation. They play essential roles in germ line development, differentiation and disease. In eukaryotic mRNAs, N-adenosine methylation (mA) is the most prevalent internal chemical modification identified to date. Read More

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December 2018

m6A modification of non-coding RNA and the control of mammalian gene expression.

Biochim Biophys Acta Gene Regul Mech 2018 Dec 11. Epub 2018 Dec 11.

Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.

The biology of non-coding RNA (ncRNA) and the regulation of mammalian gene expression is a rapidly expanding field. In this review, we consider how recent advances in technology, enabling the precise mapping of modifications to RNA transcripts, has provided new opportunities to dissect post-transcriptional gene regulation. With this has come the realisation that in the absence of translation, the modification of ncRNAs may play a fundamental role in their regulation, protein interactome and subsequent downstream effector functions. Read More

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December 2018

Modulation of vitamin D signaling by the pioneer factor CEBPA.

Biochim Biophys Acta Gene Regul Mech 2018 Dec 11. Epub 2018 Dec 11.

School of Medicine, Institute of Biomedicine, University of Eastern Finland, FI-70211 Kuopio, Finland. Electronic address:

The myeloid master regulator CCAAT enhancer-binding protein alpha (CEBPA) is known as a pioneer factor. In this study, we report the CEBPA cistrome of THP-1 human monocytes after stimulation with the vitamin D receptor (VDR) ligand 1α,25-dihydroxyvitamin D (1,25(OH)D) for 2, 8 and 24 h. About a third of the genomic VDR binding sites co-located with those of CEBPA. Read More

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December 2018
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Comparison of stool examination techniques to detect Opisthorchis viverrini in low intensity infection.

Acta Trop 2018 Dec 11. Epub 2018 Dec 11.

Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, 10400, Thailand. Electronic address:

Opisthorchiasis, caused by Opisthorchis viverrini, remains the public health significance in Thailand, particularly in the northeastern region. Number of parasitological techniques is available for diagnosis. However, the detection the parasite's eggs in stool still referred as gold standard. Read More

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December 2018

The cytochrome b lysine 329 residue is critical for ubihydroquinone oxidation and proton release at the Q site of bacterial cytochrome bc.

Biochim Biophys Acta Bioenerg 2018 Dec 11. Epub 2018 Dec 11.

Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address:

The ubihydroquinone:cytochrome (cyt) c oxidoreductase (or cyt bc) is an important enzyme for photosynthesis and respiration. In bacteria like Rhodobacter capsulatus, this membrane complex has three subunits, the iron‑sulfur protein (ISP) with its FeS cluster, cyt c and cyt b, forming two catalytic domains, the Q (hydroquinone (QH) oxidation) and Q (quinone (Q) reduction) sites. At the Q site, the electron transfer pathways originating from QH oxidation are known, but their associated proton release routes are less well defined. Read More

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December 2018

Polymorphisms in the myeloid differentiation primary response 88 pathway do not explain low expression levels in sudden infant death syndrome.

Acta Paediatr 2018 Dec 14. Epub 2018 Dec 14.

Department of Forensic Sciences, Section of Paediatric Forensic Medicine, Oslo University Hospital, Oslo, Norway.

Aim: The aim of this study was to investigate if a range of known rare and common genetic variants in the Toll-like receptor 4 (TLR4) / myeloid differentiation primary response 88 (MyD88) pathway were present or overrepresented in sudden infant death syndrome (SIDS) compared to controls.

Methods: Genetic variations in the genes encoding TLR4, MyD88 and Interleukin-1 receptor-associated kinase 4 were analysed. The subjects investigated included 158 SIDS cases with a median age of 15. Read More

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December 2018

[Iatrogenic femoral head fracture during a closed reduction of posterior dislocation of hip. Case report].

Acta Ortop Mex 2018 Jul-Aug;32(4):234-239

Servicio de Cadera y Pelvis del Hospital General de Querétaro. Querétaro, México.

The fracture dislocation of the hip is a rare lesion described up to 4 to 17% of the cases and usually secondary to automobile accidents. Generally of poor prognosis and with already well documented complications such as avascular necrosis of the femoral head, osteoarthritis and heterotopic ossification. The iatrogenic fracture of the neck or head of the proximal femur is a complication even more rare and is not documented its incidence in the world literature. Read More

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December 2018

[Parathyroid carcinoma: diagnosis by a femur fracture].

Acta Ortop Mex 2018 Jul-Aug;32(4):229-233

Departamento de Anatomopatología del Hospital Ángeles León. León, Guanajuato. México.

Background: Carcinoma of the parathyroid gland (PC) described by De Quervain since 1909, it represents the least common neoplasm, with an incidence of 1,25/10,000,000 peoples. It has been reported approximately 1,000 cases of CP in world literature. There are two series in Mexico, one of eight patients and other with four cases. Read More

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December 2018
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[Tumor hip prosthesis in fibrous dysplasia of proximal femur. Case report].

Acta Ortop Mex 2018 Jul-Aug;32(4):225-228

Unidad Médica de Alta Especialidad del Hospital de Traumatología y Ortopedia de Puebla del Instituto Mexicano del Seguro Social. Puebla, México.

Background: fibrous dysplasia is characterized by the formation of fibrous tissue that generates immature malformed trabeculae. Their involvement may be monostotic or poliostotic.

Case Report: Thirty years old female with fibrous dysplasia of the left hip. Read More

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December 2018

[The 50 most cited articles in orthopedics and traumatology by Mexican authors].

Acta Ortop Mex 2018 Jul-Aug;32(4):214-224

Departamento de Ortopedia. Centro Médico ABC, Ciudad de México, México.

Background: The amount of quotation a scientific article receives is important for the academic impact. In the present study, we analyzed the 50 most cited articles in orthopedics and related areas published by mexican authors, as well as analyzing their main characteristics.

Material And Methods: A search was conducted using Web of Science, of the 50 articles with the largest number of quotation on orthopedics and related areas, in which the principal author or corresponding author had an address in Mexico. Read More

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December 2018

[Morphological and dimensional changes of the magnetic resonance imaging in the carpal tunnel (pre- and postoperatively)].

Acta Ortop Mex 2018 Jul-Aug;32(4):209-213

Unidad Médica de Alta Especialidad de Traumatología y Ortopedia «Lomas Verdes» del Instituto Mexicano del Seguro Social (IMSS). México.

Introduction: Carpal tunnel syndrome is the most common compression neuropathy of the upper limb, and the release of the median nerve is the surgical treatment that is carried out. There are several surgical techniques used to treat this condition; However, this virtual cavity, which we call the carpal tunnel, undergoes several morphological and dimensional changes, prior to surgery and after surgery using the various techniques that the surgeon has a predilection for.

Material And Methods: Observational, prospective and longitudinal study conducted in the period from March to November 2009. Read More

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December 2018

Comparative study between Plate-Graff, Plate-Cage and peek cage in cervical spine fusion.

Acta Ortop Mex 2018 Jul-Aug;32(4):203-208

Spine Surgery Service. National Institute of Rehabilitation Luis Guillermo Ibarra Ibarra. Mexico City. Mexico.

Objective: To compare results of Plate-Graff, Plate-Cage and PEEK cage in patients with cervical stenosis.

Material And Methods: Prospective, with before and after intervention and comparative study. From January 2005 to October 2011 we included 37 patients (male: 48. Read More

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December 2018

[Leucocyte esterase as a reliable diagnostic, cost-effective and fast in knee infections].

Acta Ortop Mex 2018 Jul-Aug;32(4):198-202

Dirección de Educación e Investigación en Salud, Hospital de Traumatología. Unidad Médica de Alta Especialidad (UMAE). «Dr. Victorio de la Fuente Narváez», Instituto Mexicano del Seguro Social (IMSS). Ciudad de México. México.

Background: The articular infection represents a challenge due to its complexity and its devastating effect when not treated promptly. We have various diagnostic studies: cultures, ESR, CRP, count of leukocytes, among others but none is specific, it takes more than 30 minutes to complete and require complex infrastructure. In this study we determine the sensitivity and specificity of the leukocyte esterase for detection of an infectious process joint in Mexican population. Read More

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December 2018

Preoperative serum albumin as a predictor of complications following total hip replacement in patients with rheumatoid arthritis.

Acta Ortop Mex 2018 Jul-Aug;32(4):193-197

Trauma and Orthopaedic Surgery Hospitals. UMAE «Dr. Victorio de la Fuente Narváez», Mexico City.

Background: Rheumatoid arthritis is a chronic inflammatory disease characterized by polyarthritis with progressive articular wear, immunologic abnormalities and increasing physical limitation. Surgical correction with hip replacement comes as a successful solution for patients with advanced articular destruction. Following intervention, surgical site infection (SSI), venous thromboembolism, sepsis, renal and major cardiovascular complications are among the most cited in the literature. Read More

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December 2018

Optic Disc Coloboma in children - prevalence, clinical characteristics and associated morbidity.

Acta Ophthalmol 2018 Dec 13. Epub 2018 Dec 13.

Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.

Purpose: The aim of the study was to report prevalence, ocular outcome, neurological characteristics, cognitive and behavioural problems in children with optic disc coloboma (ODC).

Methods: This was a population-based, cross-sectional study of 31 children between 2 and 18 years of age diagnosed with ODC. The children were part of a larger cohort of 184 children with congenital optic disc malformations. Read More

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December 2018
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Retinal metabolic and structural alterations in response to aflibercept treatment in neovascular age-related macular degeneration.

Acta Ophthalmol 2018 Dec 13. Epub 2018 Dec 13.

Department of Ophthalmology, Odense University Hospital, Odense, Denmark.

Purpose: Non-invasive retinal markers of disease activity could pave the way for individualized treatment in neovascular age-related macular degeneration (nAMD). We aimed to evaluate if retinal vascular oxygen saturation and calibres could predict the initial treatment response after a loading phase of intravitreal aflibercept in nAMD.

Method: A total of 149 eyes were included (nAMD, n = 76; dry AMD, n = 30; normal eyes n = 43). Read More

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December 2018

Repeatability and reliability of quantitative fundus autofluorescence imaging in patients with early and intermediate age-related macular degeneration.

Acta Ophthalmol 2018 Dec 13. Epub 2018 Dec 13.

Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria.

Purpose: Quantification of fundus autofluorescence has only recently become available. We report our findings on the evaluation of the repeatability and reliability of quantitative fundus autofluorescence (qAF) measurements in patients with early and intermediate age-related macular degeneration (AMD), using the first approved and commercially available instrument.

Methods: A total of 43 eyes of 22 patients (aged between 52 and 84 years) diagnosed with early and intermediate AMD were included. Read More

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December 2018

Review of rodent hypertensive glaucoma models.

Acta Ophthalmol 2018 Dec 13. Epub 2018 Dec 13.

Department of Ophthalmology & Visual Sciences, Chinese University of Hong Kong, Hong Kong, Hong Kong.

Glaucoma is a neurodegenerative disease characterized by the progressive loss of retinal ganglion cells (RGCs). Elevated intraocular pressure (IOP) is a primary risk factor for the development and progression of glaucoma. Rodent models of glaucoma have greatly improved our understanding of the pathophysiology of glaucoma and served as a useful tool to investigate neuroprotective agents. Read More

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December 2018

Hemofiltration for neuroprotection in acute ischemic stroke: a prospective, pilot study.

Acta Neurol Scand 2018 Dec 13. Epub 2018 Dec 13.

National Research Oncology and Transplantation Center, Astana, Kazakhstan.

Background: Hemofiltration reduces blood levels of cytokines, glutamate and other substances that increase the risk of stroke-associated neurodegeneration. This study aimed to assess the safety and efficacy of hemofiltration in acute ischemic stroke patients.

Methods: 37 patients (mean age 56±16 years) who had an ischemic stroke within the previous 12 hours were randomized to receive hemofiltration for 36 hours (n=19) or standard treatment (n=18). Read More

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December 2018
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