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https://www.readbyqxmd.com/read/27892802/longitudinal-changes-and-correlations-of-bio-impedance-and-anthropometric-measurements-in-pregnancy-simple-possible-bed-side-tools-to-assess-pregnancy-evolution
#1
Gabriele Piuri, Enrico Ferrazzi, Camilla Bulfoni, Luciana Mastricci, Daniela Di Martino, Attilio Francesco Speciani
PURPOSE: the aim of this study was to assess longitudinal changes of bio-impedance analysis compared with anthropometric measurements in low risk pregnant woman recruited in the first trimester, and to observe possible differences in these indices in women who developed high risk pregnancies. MATERIAL AND METHODS: bio-impedance indices, for the three trimesters of pregnancies were calculated separately for uneventful pregnancies delivered of newborns > the 10(th) centile...
November 28, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27875525/precision-medicine-in-cancer-challenges-and-recommendations-from-an-eu-funded-cervical-cancer-biobanking-study
#2
Sanne Samuels, Balazs Balint, Heiko von der Leyen, Philippe Hupé, Leanne de Koning, Choumouss Kamoun, Windy Luscap-Rondof, Ulrike Wittkop, Ksenia Bagrintseva, Marina Popovic, Atttila Kereszt, Els Berns, Gemma G Kenter, Ekaterina S Jordanova, Maud Kamal, Susy Scholl
BACKGROUND: Cervical cancer (CC) remains a leading cause of gynaecological cancer-related mortality worldwide. CC pathogenesis is triggered when human papillomavirus (HPV) inserts into the genome, resulting in tumour suppressor gene inactivation and oncogene activation. Collecting tumour and blood samples is critical for identifying these genetic alterations. METHODS: BIO-RAIDs is the first prospective molecular profiling clinical study to include a substantial biobanking effort that used uniform high-quality standards and control of samples...
November 22, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27812588/scaling-down-for-a-broader-understanding-of-underwater-adhesives-a-case-for-the-caulobacter-crescentus-holdfast
#3
REVIEW
Alex Nyarko, Hazel Barton, Ali Dhinojwala
The adhesion of two materials in the presence of water is greatly impeded by a boundary layer of water between the adhesive and the adherend, resulting in adhesive failure of most synthetic adhesives; however, life evolved first in water and there are many aquatic organisms that have to overcome this impediment to underwater adhesion. For example, multicellular aquatic organisms like the mussel, sandcastle worm and the caddisfly larva employ well-studied adhesive mechanisms for sticking in the presence of water...
November 16, 2016: Soft Matter
https://www.readbyqxmd.com/read/27809470/hypoxia-mimicking-nanofibrous-scaffolds-promote-endogenous-bone-regeneration
#4
Qingqing Yao, Yangxi Liu, Jianning Tao, Keith M Baumgarten, Hongli Sun
Utilizing bio-mimetic materials to potentiate endogenous cell growth or signaling is superior to relying on exogenous cells or signals for bone formation. Desferoxamine (DFO), which is a hypoxia-mimetic agent that chelates iron (Fe3+), mimics hypoxia to encourage bone healing. However, high cytotoxicity, off-target effects, and the short half-life of DFO have significantly impeded its further applications. We mitigated these side effects by locally immobilizing DFO onto a gelatin nanofibrous (GF) scaffold that retained DFO's ability to chelate Fe3+...
November 3, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27806471/variations-in-vitamin-d-receptor-gene-adiposity-phenotypes-and-metabolic-profile-in-overweight-women-with-hypovitaminosis-d
#5
Samira Ebrahimof, Hamid Zand, Sakineh Shab-Bidar, Marjan Zarif Yeganeh, Farzaneh Jahangiri, Katayoun Pourvali, Maryam Sadat Daneshpour, Mehdi Hedayati
BACKGROUND: The possible role of vitamin D receptor (VDR) genotypes in determining adiposity phenotypes and cardiovascular risk factors has been suggested previously. The aim of this study was to evaluate the associations of the VDR gene variants with adiposity phenotypes and metabolic profile in Iranian overweight women with hypovitaminos is D. METHODS: Three VDR variants including FokI (rs2228570), BsmI (rs1544410) and rs757343 were detected using PCR-sequencing...
June 30, 2016: Global Journal of Health Science
https://www.readbyqxmd.com/read/27770942/an-electrical-bio-chip-to-transfer-and-detect-electromagnetic-stimulation-on-the-cells-based-on-vertically-aligned-carbon-nanotubes
#6
Saeed Rafizadeh-Tafti, Mohammad Hossein Haqiqatkhah, Mehrdad Saviz, Mohsen Janmaleki, Reza Faraji Dana, Somayeh Zanganeh, Mohammad Abdolahad
A highly sensitive impedimetric bio-chip based on vertically aligned multiwall carbon nanotubes (VAMWCNTs), was applied in direct interaction with lung cancer cells. Our tool provided both inducing and monitoring the bioelectrical changes in the cells initiated by electromagnetic (EM) wave stimulation. EM wave of 940MHz frequency with different intensities was used. Here, wave ablation might accumulate electrical charge on the tips of nanotubes penetrated into cell's membrane. The charge might induce ionic exchanges into the cell and cause alterations in electrical states of the membrane...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27764980/which-echocardiographic-parameter-is-a-better-marker-of-volume-status-in-hemodialysis-patients
#7
Tahereh Sabaghian, Bahareh Hajibaratali, Shiva Samavat
AIM: Bio-impedance analysis (BIA) is a preferred method for estimating the volume status. However, it cannot be utilized in daily practice. Since the assessment of the volume status is important and challenging for hemodialysis (HD) patients, the aim of study was to determine the volume status in chronic HD patients using echocardiographic parameters and assess its correlation with BIA. METHODS: In this cross-sectional analysis, echocardiography and BIA were performed on 30 chronic HD patients 30 min before and 30 min after dialysis...
October 20, 2016: Renal Failure
https://www.readbyqxmd.com/read/27718579/superior-catalytic-performance-of-gold-nanoparticles-within-small-cross-linked-lysozyme-crystals
#8
Mingyue Liu, Libing Wang, Renliang Huang, Yanjun Yu, Rongxin Su, Wei Qi, Zhimin He
Bionanomaterials synthesized by bio-inspired templating methods have emerged as a novel class of composite materials with varied applications in catalysis, detection, drug delivery, and biomedicine. In this study, two kinds of cross-linked lysozyme crystals (CLLCs) of different sizes were applied for the in situ growth of Au nanoparticles (AuNPs). The resulting composite materials were characterized by light microscopy, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy...
October 8, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27695132/rough-gold-electrodes-for-decreasing-impedance-at-the-electrolyte-electrode-interface
#9
Anil Koklu, Ahmet C Sabuncu, Ali Beskok
Electrode polarization at the electrolyte/electrode interface is often undesirable for bio-sensing applications, where charge accumulated over an electrode at constant potential causes large potential drop at the interface and low measurement sensitivity. In this study, novel rough electrodes were developed for decreasing electrical impedance at the interface. The electrodes were fabricated using electrochemical deposition of gold and sintering of gold nanoparticles. The performances of the gold electrodes were compared with platinum black electrodes...
July 1, 2016: Electrochimica Acta
https://www.readbyqxmd.com/read/27695058/monitoring-in-real-time-the-formation-and-removal-of-biofilms-from-clinical-related-pathogens-using-an-impedance-based-technology
#10
Diana Gutiérrez, Claudio Hidalgo-Cantabrana, Ana Rodríguez, Pilar García, Patricia Ruas-Madiedo
Bacteria found in diverse ecosystems grow in a community of aggregated cells that favors their survival and colonization. Different extracellular polymeric substances are used to entrap this multispecies community forming a biofilm, which can be associated to biotic and abiotic surfaces. This widespread and successful way of bacterial life, however, can lead to negative effects for human activity since many pathogen and spoiling bacteria form biofilms which are not easy to eradicate. Therefore, the search for novel anti-biofilm bio-active molecules is a very active research area for which simple, reliable, and fast screening methods are demanded...
2016: PloS One
https://www.readbyqxmd.com/read/27683834/is-handgrip-strength-normalized-to-body-weight-a-useful-tool-to-identify-dynapenia-and-functional-incapacity-in-post-menopausal-women
#11
Maude Dulac, Guy El Hajj Boutros, Charlotte Pion, Sébastien Barbat-Artigas, Gilles Gouspillou, Mylène Aubertin-Leheudre
Objective: To investigate whether handgrip strength normalized to body weight could be a useful clinical tool to identify dynapenia and assess functional capacity in post-menopausal women. Method: A total of 136 postmenopausal women were recruited. Body composition (Dual Energy X-ray Absorptiometry [DEXA], Bio-electrical Impedence Analysis [BIA]), grip strength (dynamometer) and functional capacity (senior fitness tests) were evaluated. Dynapenia was established according to a handgrip strength index (handgrip strength divided by body weight (BW) in Kg/KgBW) obtained from a reference population of young women: Type I dynapenic (<0...
September 15, 2016: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/27680816/g5-12-week-cardiovascular-profiles-differ-between-patients-with-essential-hypertension-gestational-hypertension-late-preeclampsia-and-intra-uterine-growth-retardation
#12
S Vonck, J Oben, A S Staelens, D Lanssens, K Tomsin, W Gyselaers
INTRODUCTION: Maternal cardiovascular adaptations are mandatory for a normal course of pregnancy. Disturbed adaptations predispose to gestational complications further in pregnancy such as hypertension disorders and/or fetal growth restriction. We aim to explore the early gestational cardiovascular profile in uncomplicated pregnancy, in gestational hypertensive disorders and isolated intra-uterine growth retardation. METHODS: Cardiovascular assessments were done using a standard protocol with impedance cardiography (Niccomo, SonoSite, MedisMedinizinischeMesstechnik GmbH, Ilmenau, Germany) and bio-impedance (Maltron BIOSCAN 920-II; Maltron International LTD, Essex, UK) around 12 weeks of gestation...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27664695/a-comprehensive-approach-for-milk-adulteration-detection-using-inherent-bio-physical-properties-as-universal-markers-towards-a-miniaturized-adulteration-detection-platform
#13
Suryasnata Tripathy, Aniket Ramesh Ghole, Khandavalli Deep, Siva Rama Krishna Vanjari, Shiv Govind Singh
This paper proposes a novel milk quality detection approach based on utilization of inherent biophysical properties as 'markers' for adulteration. Unlike the traditional adulterant-specific approaches, this method is generic and universal. It exploits the change in innate milk properties, such as electrical conductivity and pH, upon addition of adulterants as a transduction mechanism for detecting milk adulteration. In this work, adulteration with more than 10 commercially known hazardous adulterants is detected by monitoring the changes in milk electrical conductivity and pH...
February 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27648418/socio-cultural-factors-in-the-access-of-women-to-hiv-aids-prevention-and-treatment-services-in-south-southern-nigeria
#14
Edlyne Anugwom, Kenechukwu Anugwom
BACKGROUND: The South-southern zone of Nigeria is one of the zones in the country that has reported consistent high prevalent rates of HIV/AIDS pandemic in the last decade. In spite of bio-medical reasons adduced for the spread of the pandemic, socio-cultural factors may be major issues in the access to both prevention and treatment services especially for women. Hence, this study investigated the socio-cultural factors, which influence the access of women to HIV/AIDS prevention and treatment services in Nigeria...
June 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/27639399/noninvasive-pulmonary-artery-pressure-monitoring-by-eit-a-model-based-feasibility-study
#15
Martin Proença, Fabian Braun, Josep Solà, Jean-Philippe Thiran, Mathieu Lemay
Current monitoring modalities for patients with pulmonary hypertension (PH) are limited to invasive solutions. A novel approach for the noninvasive and unsupervised monitoring of pulmonary artery pressure (PAP) in patients with PH was proposed and investigated. The approach was based on the use of electrical impedance tomography (EIT), a noninvasive and safe monitoring technique, and was tested through simulations on a realistic 4D bio-impedance model of the human thorax. Changes in PAP were induced in the model by simulating multiple types of hypertensive conditions...
September 17, 2016: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/27617410/novel-strategy-for-sulfapyridine-detection-using-a-fully-integrated-electrochemical-bio-mems-application-to-honey-analysis
#16
Nadia El Alami El Hassani, Abdoullatif Baraket, Ernandes Taveira Tenório Neto, Michael Lee, J-Pablo Salvador, M-Pilar Marco, Joan Bausells, Nezha El Bari, Benachir Bouchikhi, Abdelhamid Elaissari, Abdelhamid Errachid, Nadia Zine
Sulfapyridine (SPy) is a sulfonamide antibiotic largely employed as veterinary drugs for prophylactic and therapeutic purposes. Therefore, its spread in the food products has to be restricted. Herein, we report the synthesis and characterization of a novel electrochemical biosensor based on gold microelectrodes modified with a new structure of magnetic nanoparticles (MNPs) coated with poly(pyrrole-co-pyrrole-2-carboxylic acid) (Py/Py-COOH) for high efficient detection of SPy. This analyte was quantified through a competitive detection procedure with 5-[4-(amino)phenylsulfonamide]-5-oxopentanoic acid-BSA (SA2-BSA) antigens toward polyclonal antibody (Ab-155)...
August 27, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27570648/ion-channel-electrophysiology-ontology-icepo-a-case-study-of-text-mining-assisted-ontology-development
#17
Ravikumar Komandur Elayavilli, Hongfang Liu
BACKGROUND: Computational modeling of biological cascades is of great interest to quantitative biologists. Biomedical text has been a rich source for quantitative information. Gathering quantitative parameters and values from biomedical text is one significant challenge in the early steps of computational modeling as it involves huge manual effort. While automatically extracting such quantitative information from bio-medical text may offer some relief, lack of ontological representation for a subdomain serves as impedance in normalizing textual extractions to a standard representation...
2016: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/27570565/nuclear-lamins-in-cancer
#18
Jerome Irianto, Charlotte R Pfeifer, Irena L Ivanovska, Joe Swift, Dennis E Discher
Dysmorphic nuclei are commonly seen in cancers and provide strong motivation for studying the main structural proteins of nuclei, the lamins, in cancer. Past studies have also demonstrated the significance of microenvironment mechanics to cancer progression, which is extremely interesting because the lamina was recently shown to be mechanosensitive. Here, we review current knowledge relating cancer progression to lamina biophysics. Lamin levels can constrain cancer cell migration in 3D and thereby impede tumor growth, and lamins can also protect a cancer cell's genome...
June 2016: Cellular and Molecular Bioengineering
https://www.readbyqxmd.com/read/27525683/maternal-body-fluid-composition-in-uncomplicated-pregnancies-and-preeclampsia-a-bioelectrical-impedance-analysis
#19
Anneleen S Staelens, Sharona Vonck, Geert Molenberghs, Manu L N G Malbrain, Wilfried Gyselaers
OBJECTIVES: Body fluid composition changes during the course of pregnancy and there is evidence to suggest that these changes are different in uncomplicated pregnancies compared to hypertensive pregnancies. The aim of this study was to evaluate the changes in maternal body fluid composition during the course of an uncomplicated pregnancy and to assess differences in uncomplicated pregnancies versus hypertensive pregnancies by using a bio-impedance analysis technique. STUDY DESIGN: Body fluid composition of each patient was assessed using a multiple frequency bioelectrical impedance analyser...
September 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27504280/anthropometric-predictors-of-bio-impedance-analysis-bia-phase-angle-in-healthy-adults
#20
Nazeem Ishrat Siddiqui, Sarfaraz Alam Khan, Mohammad Shoeb, Sukhwant Bose
INTRODUCTION: Phase Angle (PhA) is a ratio of whole body reactance and resistance obtained from Bioelectrical Impedance Analysis (BIA). It indicates cellular health and integrity and is considered as prognostic tool in medical disorders. In spite of prognostic potentials of PhA, it has limited usefulness in clinical practice and in population studies because of non-availability of normal population reference limits for comparison. Moreover, it is influenced by various factors like age, sex, race and body composition (i...
June 2016: Journal of Clinical and Diagnostic Research: JCDR
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