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Noise and diabet

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https://www.readbyqxmd.com/read/29155151/hba1c-monitoring-interval-in-patients-on-treatment-for-stable-type-2-diabetes-a-ten-year-retrospective-open-cohort-study
#1
Sachiko Ohde, Gautam A Deshpande, Hiroshi Yokomichi, Osamu Takahashi, Tsuguya Fukui, Zentaro Yamagata
[Aims] This study aims to suggest an informative interval for HbA1c in DM patients with stable glycemic control, based on test characteristics of the HbA1C assay using the signal-to-noise ratio method. [Methods] This was a retrospective, open cohort study. Data were collected between January 2005 to December 2014 at a tertiary-level community hospital in Japan. All adult patients aged under 75 years, with stable glycemic control on a first pharmaceutical regimen for Type II diabetes, and at least two HbA1c measurements after they achieved glycemic stability, were included in the analysis...
November 16, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29129852/one-year-egfr-decline-rate-is-a-good-predictor-of-prognosis-of-renal-failure-in-patients-with-type-2-diabetes
#2
Jun Nojima, Shu Meguro, Naoto Ohkawa, Michiaki Furukoshi, Toshihide Kawai, Hiroshi Itoh
It is difficult to distinguish the onset of renal function decline from the typical variation in estimated glomerular filtration rate (eGFR) measurements in clinical practice. In this study, we used data analysis incorporating smoothing techniques to identify significant trends despite large amounts of noise. We identified the starting points of meaningful eGFR decline based on eGFR trajectories. This was a retrospective observational study of 2533 type 2 diabetes patients. We calculated 1-year eGFR decline rates from the difference between each eGFR value and that of the previous year...
2017: Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
https://www.readbyqxmd.com/read/29060326/measurement-of-perception-thresholds-for-electrical-noise-stimuli
#3
David Karpul, Sarah McIntyre, Andre van Schaik, Paul P Breen
In previous research, the application of sub-threshold electrical nerve stimulation (SENS) to peripheral nerves has been shown to improve tactile sensitivity. SENS has applications in the symptomatic treatment of a wide array of conditions that result in the loss of peripheral nerve function. These include diabetes, stroke, and age related peripheral neuropathy. The technology is dependent on careful control of the amplitude of the intervention stimulation relative to the user's perception threshold. However, little is known about the factors that influence the perception threshold and whether it can be treated as a constant...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29045908/long-term-exposure-to-residential-railway-and-road-traffic-noise-and-risk-for-diabetes-in-a-danish-cohort
#4
Nina Roswall, Ole Raaschou-Nielsen, Steen Solvang Jensen, Anne Tjønneland, Mette Sørensen
BACKGROUND: Road traffic noise exposure has been found associated with diabetes incidence. Evidence for an association between railway noise exposure is less clear, as large studies with detailed railway noise modelling are lacking. PURPOSE: To investigate the association between residential railway noise and diabetes incidence, and to repeat previous analyses on road traffic noise and diabetes with longer follow-up time. METHODS: Among 50,534 middle-aged Danes enrolled into the Diet, Cancer and Health cohort from 1993 to 97, we identified 5062 cases of incident diabetes during a median follow-up of 15...
October 15, 2017: Environmental Research
https://www.readbyqxmd.com/read/29040675/fluctuation-localization-imaging-based-fluorescence-in-situ-hybridization-flifish-for-accurate-detection-and-counting-of-rna-copies-in-single-cells
#5
Yi Cui, Dehong Hu, Lye Meng Markillie, William B Chrisler, Matthew J Gaffrey, Charles Ansong, Lori Sussel, Galya Orr
Quantitative gene expression analysis in intact single cells can be achieved using single molecule-based fluorescence in situ hybridization (smFISH). This approach relies on fluorescence intensity to distinguish between true signals, emitted from an RNA copy hybridized with multiple oligonucleotide probes, and background noise. Thus, the precision in smFISH is often compromised by partial or nonspecific probe binding and tissue autofluorescence, especially when only a small number of probes can be fitted to the target transcript...
October 4, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28976899/community-noise-exposure-and-its-effect-on-blood-pressure-and-renal-function-in-patients-with-hypertension-and-cardiovascular-disease
#6
Angel M Dzhambov, Mariya P Tokmakova, Penka D Gatseva, Nikolai G Zdravkov, Dolina G Gencheva, Nevena G Ivanova, Krasimir I Karastanev, Stefka V Vladeva, Aleksandar T Donchev, Svetlan M Dermendzhiev
BACKGROUND: Road traffic noise (RTN) is a risk factor for cardiovascular disease (CVD) and hypertension; however, few studies have looked into its association with blood pressure (BP) and renal function in patients with prior CVD. AIM: This study aimed to explore the effect of residential RTN exposure on BP and renal function in patients with CVD from Plovdiv Province. MATERIALS AND METHODS: We included 217 patients with ischemic heart disease and/or hypertension from three tertiary hospitals in the city of Plovdiv (March - May 2016)...
September 1, 2017: Folia Medica
https://www.readbyqxmd.com/read/28953453/long-term-exposure-to-road-traffic-noise-and-nitrogen-dioxide-and-risk-of-heart-failure-a-cohort-study
#7
Mette Sørensen, Olav Wendelboe Nielsen, Ahmad Sajadieh, Matthias Ketzel, Anne Tjønneland, Kim Overvad, Ole Raaschou-Nielsen
BACKGROUND: Although air pollution and road traffic noise have been associated with higher risk of cardiovascular diseases, associations with heart failure have received only little attention. OBJECTIVES: We aimed to investigate whether long-term exposure to road traffic noise and nitrogen dioxide (NO2) were associated with incident heart failure. METHODS: In a cohort of 57,053 people 50-64 y of age at enrollment in the period 1993-1997, we identified 2,550 cases of first-ever hospital admission for heart failure during a mean follow-up time of 13...
September 26, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28934721/association-of-long-term-exposure-to-transportation-noise-and-traffic-related-air-pollution-with-the-incidence-of-diabetes-a-prospective-cohort-study
#8
Charlotte Clark, Hind Sbihi, Lillian Tamburic, Michael Brauer, Lawrence D Frank, Hugh W Davies
BACKGROUND: Evidence for an association between transportation noise and cardiovascular disease has increased; however, few studies have examined metabolic outcomes such as diabetes or accounted for environmental coexposures such as air pollution, greenness, or walkability. OBJECTIVES: Because diabetes prevalence is increasing and may be on the causal pathway between noise and cardiovascular disease, we examined the influence of long-term residential transportation noise exposure and traffic-related air pollution on the incidence of diabetes using a population-based cohort in British Columbia, Canada...
August 31, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28892786/gestational-diabetes-mellitus-and-exposure-to-ambient-air-pollution-and-road-traffic-noise-a-cohort-study
#9
Marie Pedersen, Sjurdur F Olsen, Thorhallur I Halldorsson, Cuilin Zhang, Dorrit Hjortebjerg, Matthias Ketzel, Charlotta Grandström, Mette Sørensen, Peter Damm, Jens Langhoff-Roos, Ole Raaschou-Nielsen
BACKGROUND: Road traffic is a main source of air pollution and noise. Both exposures have been associated with type 2 diabetes, but associations with gestational diabetes mellitus (GDM) have been studied less. OBJECTIVES: We aimed to examine single and joint associations of exposure to air pollution and road traffic noise on GDM in a prospective cohort. METHODS: We identified GDM cases from self-reports and hospital records, using two different criteria, among 72,745 singleton pregnancies (1997-2002) from the Danish National Birth Cohort...
September 8, 2017: Environment International
https://www.readbyqxmd.com/read/28889780/prevalence-of-hearing-loss-and-associated-factors-in-subjects-with-normal-otoscopy-a-national-cross-sectional-study
#10
Hong Ju Park, Myung Hoon Yoo, Sook-Young Woo, Seon Woo Kim, Yang-Sun Cho
OBJECTIVE: To report the prevalence of hearing loss (HL) and associated factors in a nationwide study. DESIGN: Cross-sectional study. STUDY SAMPLE: We investigated the prevalence of HL in 10,845 participants ≥12 years of age and analysed the associated factors with HL from 7434 participants ≥40 years of age. RESULTS: The prevalence of worse ear HL was 21.9% (1.2% in youngest and 81.9% in oldest) and that of better ear was 12...
September 11, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28888021/simultaneous-monitoring-of-single-cell-and-of-micro-organ-activity-by-pedot-pss-covered-multi-electrode-arrays
#11
Dimitrios A Koutsouras, Romain Perrier, Ariana Villarroel Marquez, Antoine Pirog, Eileen Pedraza, Eric Cloutet, Sylvie Renaud, Matthieu Raoux, George G Malliaras, Jochen Lang
Continuous and long-term monitoring of cellular and micro-organ activity is required for new insights into physiology and novel technologies such as Organs-on-Chip. Moreover, recent advances in stem cell technology and especially in the field of diabetes call for non-invasive approaches in quality testing of the large quantities of surrogate pancreatic islets to be generated. Electrical activity of such a micro-organ results in single cell action potentials (APs) of high frequency and in low frequency changes in local field potentials (slow potentials or SPs), reflecting coupled cell activity and overall organ physiology...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28841762/comparison-of-different-compressed-sensing-algorithms-for-low-snr-19-f-mri-applications-imaging-of-transplanted-pancreatic-islets-and-cells-labeled-with-perfluorocarbons
#12
Sayuan Liang, Tom Dresselaers, Karim Louchami, Ce Zhu, Yipeng Liu, Uwe Himmelreich
Transplantation of pancreatic islets is a possible treatment option for patients suffering from Type I diabetes. In vivo imaging of transplanted islets is important for assessment of the transplantation site and islet distribution. Thanks to its high specificity, the absence of intrinsic background signal in tissue and its potential for quantification, (19) F MRI is a promising technique for monitoring the fate of transplanted islets in vivo. In order to overcome the inherent low sensitivity of (19) F MRI, leading to long acquisition times with low signal-to-noise ratio (SNR), compressed sensing (CS) techniques are a valuable option...
August 25, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28835436/in-vitro-contraction-protects-against-palmitate-induced-insulin-resistance-in-c2c12-myotubes
#13
Stephan Nieuwoudt, Anny Mulya, Ciaran E Fealy, Elizabeth Martelli, Srinivasan Dasarathy, Sathyamangla V Naga Prasad, John P Kirwan
We are interested in understanding mechanisms that govern the protective role of exercise against lipid-induced insulin resistance, a key driver of type 2 diabetes. In this context, cell culture models provide a level of abstraction that aid in our understanding of cellular physiology. Here we describe the development of an in vitro myotube contraction system that provides this protective effect, and which we have harnessed to investigate lipid-induced insulin resistance. C2C12 myocytes were differentiated into contractile myotubes...
August 23, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28806613/automatic-blood-vessels-segmentation-based-on-different-retinal-maps-from-octa-scans
#14
Nabila Eladawi, Mohammed Elmogy, Omar Helmy, Ahmed Aboelfetouh, Alaa Riad, Harpal Sandhu, Shlomit Schaal, Ayman El-Baz
The retinal vascular network reflects the health of the retina, which is a useful diagnostic indicator of systemic vascular. Therefore, the segmentation of retinal blood vessels is a powerful method for diagnosing vascular diseases. This paper presents an automatic segmentation system for retinal blood vessels from Optical Coherence Tomography Angiography (OCTA) images. The system segments blood vessels from the superficial and deep retinal maps for normal and diabetic cases. Initially, we reduced the noise and improved the contrast of the OCTA images by using the Generalized Gauss-Markov random field (GGMRF) model...
August 7, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28783619/fully-automated-segmentation-of-fluid-cyst-regions-in-optical-coherence-tomography-images-with-diabetic-macular-edema-using-neutrosophic-sets-and-graph-algorithms
#15
Abdolreza Rashno, Dara D Koozekanani, Paul M Drayna, Behzad Nazari, Saeed Sadri, Hossein Rabbani, Keshab K Parhi
This paper presents a fully-automated algorithm to segment fluid-associated (fluid-filled) and cyst regions in optical coherence tomography (OCT) retina images of the subjects with diabetic macular edema (DME). The OCT image is segmented using a novel neutrosophic transformation and a graph-based shortest path method. In neutrosophic domain, an image g is transformed into three sets: T (true), I (indeterminate) that represents noise, and F (false). This paper makes four key contributions. First, a new method is introduced to compute the indeterminacy set I, and a new λ-correction operation is introduced to compute the set T in neutrosophic domain...
July 31, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28721941/blood-glucose-concentration-control-for-type-1-diabetic-patients-a-non-linear-suboptimal-approach
#16
Yazdan Batmani
In this study, a closed-loop treatment strategy is proposed for the control of blood glucose levels in type 1 diabetic patients. Toward this end, a non-linear technique for designing suboptimal tracking controllers, called the state-dependent Riccati equation tracker, is used based on a mathematical model of the glucose-insulin regulatory system. Since two state variables of the utilised model are not available to the controller, a non-linear filter is also designed to estimate these variables using the measured blood glucose concentration...
August 2017: IET Systems Biology
https://www.readbyqxmd.com/read/28720778/visualization-of-kidney-fibrosis-in-diabetic-nephropathy-by-long-diffusion-tensor-imaging-mri-with-spin-echo-sequence
#17
Jun-Ya Kaimori, Yoshitaka Isaka, Masaki Hatanaka, Satoko Yamamoto, Naotsugu Ichimaru, Akihiko Fujikawa, Hiroshi Shibata, Akira Fujimori, Sosuke Miyoshi, Takashi Yokawa, Kagayaki Kuroda, Toshiki Moriyama, Hiromi Rakugi, Shiro Takahara
Renal fibrosis (RF) is an indicator for progression of chronic kidney disease (CKD). Although diabetic nephropathy (DN) is the leading cause of CKD and end-stage renal disease in Western populations, the ability of MRI to evaluate RF in DN patients has not been determined. As a first step to identify possible MRI methods for RF evaluation, we examined the use of diffusion tensor imaging (DTI) MRI to evaluate RF in a rat model of DN (SHR/NDmcr-cp(cp/cp): SHR/ND). The signal-to-noise ratio in DTI MRI was enhanced using a spin-echo sequence, and a special kidney attachment was developed for long-term stabilization...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720223/absorbance-detector-for-high-performance-liquid-chromatography-based-on-a-deep-uv-light-emitting-diode-at-235nm
#18
João Flavio da Silveira Petruci, Michael G Liebetanz, Arnaldo Alves Cardoso, Peter C Hauser
In this communication, we describe a flow-through optical absorption detector for HPLC using for the first time a deep-UV light-emitting diode with an emission band at 235nm as light source. The detector is also comprised of a UV-sensitive photodiode positioned to enable measurement of radiation through a flow-through cuvette with round aperture of 1mm diameter and optical path length of 10mm, and a second one positioned as reference photodiode; a beam splitter and a power supply. The absorbance was measured and related to the analyte concentration by emulating the Lambert-Beer law with a log-ratio amplifier circuitry...
August 25, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28720102/environmental-lifestyle-factors-in-the-pathogenesis-and-prevention-of-type-2-diabetes
#19
REVIEW
Hubert Kolb, Stephan Martin
BACKGROUND: Environmental and lifestyle changes, in addition to the ageing of populations, are generally believed to account for the rapid global increase in type 2 diabetes prevalence and incidence in recent decades. DISCUSSION: In this review, we present a comprehensive overview of factors contributing to diabetes risk, including aspects of diet quality and quantity, little physical activity, increased monitor viewing time or sitting in general, exposure to noise or fine dust, short or disturbed sleep, smoking, stress and depression, and a low socioeconomic status...
July 19, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28707484/autoregressive-modeling-of-drift-and-random-error-to-characterize-a-continuous-intravascular-glucose-monitoring-sensor
#20
Tony Zhou, Jennifer L Dickson, J Geoffrey Chase
BACKGROUND: Continuous glucose monitoring (CGM) devices have been effective in managing diabetes and offer potential benefits for use in the intensive care unit (ICU). Use of CGM devices in the ICU has been limited, primarily due to the higher point accuracy errors over currently used traditional intermittent blood glucose (BG) measures. General models of CGM errors, including drift and random errors, are lacking, but would enable better design of protocols to utilize these devices. This article presents an autoregressive (AR) based modeling method that separately characterizes the drift and random noise of the GlySure CGM sensor (GlySure Limited, Oxfordshire, UK)...
July 1, 2017: Journal of Diabetes Science and Technology
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