keyword
MENU ▼
Read by QxMD icon Read
search

FHN

keyword
https://www.readbyqxmd.com/read/29765481/weak-periodic-signal-detection-by-sine-wiener-noise-induced-resonance-in-the-fitzhugh-nagumo-neuron
#1
Yuangen Yao, Jun Ma
Based on the FitzHugh-Nagumo (FHN) neuron model subjected to sine-Wiener (SW) noise, impacts of SW noise on weak periodic signal detection are investigated by calculating response measure Q for characterizing synchronization between the input signal and the output temporal activities of the neuron. It is numerically demonstrated that the response measure Q can achieve the optimal value under appropriate and moderate intensity or correlation time of SW noise, suggesting the occurrence of SW-noise-induced stochastic resonance...
June 2018: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/29670508/stochastic-imt-insulator-metal-transition-neurons-an-interplay-of-thermal-and-threshold-noise-at-bifurcation
#2
Abhinav Parihar, Matthew Jerry, Suman Datta, Arijit Raychowdhury
Artificial neural networks can harness stochasticity in multiple ways to enable a vast class of computationally powerful models. Boltzmann machines and other stochastic neural networks have been shown to outperform their deterministic counterparts by allowing dynamical systems to escape local energy minima. Electronic implementation of such stochastic networks is currently limited to addition of algorithmic noise to digital machines which is inherently inefficient; albeit recent efforts to harness physical noise in devices for stochasticity have shown promise...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29621747/changes-in-biomarker-profile-and-left-ventricular-hypertrophy-regression-results-from-the-frequent-hemodialysis-network-trials
#3
Christopher T Chan, George A Kaysen, Gerald J Beck, Minwei Li, Joan Lo, Michael V Rocco, Alan S Kliger
BACKGROUND: Regression of left ventricular hypertrophy (LVH) is feasible with more frequent hemodialysis (HD). We aimed to ascertain pathways associated with regression of left ventricular mass (LVM) in patients enrolled in the Frequent HD Network (FHN) trials. METHODS: This was a post hoc observational cohort study. We hypothesized LVH regression with frequent HD was associated with a different cardiovascular biomarker profile. Regressors were defined as patients who achieved a reduction of more than 10% in LVM at 12 months...
2018: American Journal of Nephrology
https://www.readbyqxmd.com/read/29576650/histological-observation-of-the-retinacula-of-weitbrecht-and-its-clinical-significance-a-cadaveric-study
#4
Bang Dou, Jiong Mei, Zhiyuan Wang, Ming Ni, Guangyao Jia, Shiwei Liu
Background: The retinacular arteries provide major supply to the femoral head, their injuries may lead to the femoral head necrosis (FHN) in femoral neck fractures. Although the femoral neck fracture was seriously displaced in some patients, FHN did not occur, which suggests that the blood supply is not fully blocked. This study was aimed to find the association between the structure of the retinacula of Weitbrecht and the mechanism of protecting retinacular arteries from being injured...
March 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29535622/robust-adaptive-synchronization-of-ring-configured-uncertain-chaotic-fitzhugh-nagumo-neurons-under-direction-dependent-coupling
#5
Muhammad Iqbal, Muhammad Rehan, Keum-Shik Hong
This paper exploits the dynamical modeling, behavior analysis, and synchronization of a network of four different FitzHugh-Nagumo (FHN) neurons with unknown parameters linked in a ring configuration under direction-dependent coupling. The main purpose is to investigate a robust adaptive control law for the synchronization of uncertain and perturbed neurons, communicating in a medium of bidirectional coupling. The neurons are assumed to be different and interconnected in a ring structure. The strength of the gap junctions is taken to be different for each link in the network, owing to the inter-neuronal coupling medium properties...
2018: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/29374435/a-human-chondrocyte-derived-in-vitro-model-of-alcohol-induced-and-steroid-induced-femoral-head-necrosis
#6
Xiong Qin, Pan Jin, Tongmeng Jiang, Muyan Li, Jiachang Tan, Huayu Wu, Li Zheng, Jinmin Zhao
BACKGROUND Worldwide, femoral head necrosis (FHN), which is also known as avascular necrosis of the femoral head or osteonecrosis of the femoral head, affects millions of people. Excess alcohol intake and steroid use are two common associations with FHN, but their pathogenesis remains unknown. The aim of this study was to develop an in vitro model using human chondrocytes to study alcohol-induced and steroid-induced FHN. MATERIAL AND METHODS In this study, the in vitro model used a monolayer culture of articular chondrocytes derived from patients with non-traumatic FHN (Ficat and Arlet, Stage III)...
January 27, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29349037/family-history-of-alcoholism-and-the-human-brain-response-to-oral-sucrose
#7
William J A Eiler, Mario Dzemidzic, Christina M Soeurt, Claire R Carron, Brandon G Oberlin, Robert V Considine, Jaroslaw Harezlak, David A Kareken
A heightened hedonic response to sweet tastes has been associated with increased alcohol preference and alcohol consumption in both humans and animals. The principal goal of this study was to examine blood oxygenation level dependent (BOLD) activation to high- and low-concentration sweet solutions in subjects who are either positive (FHP) or negative (FHN) for a family history of alcoholism. Seventy-four non-treatment seeking, community-recruited, healthy volunteers (22.8 ± 1.6 SD years; 43% men) rated a range of sucrose concentrations in a taste test and underwent functional magnetic resonance imaging (fMRI) during oral delivery of water, 0...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29281187/review-on-hyperbaric-oxygen-treatment-in-femoral-head-necrosis
#8
Enrico Camporesi, Giuliano Vezzani, Vincenzo Zanon, Daniele Manelli, Garrett Enten, Silvia Quartesan, Gerardo Bosco
BACKGROUND: Femoral head necrosis (FHN) is a common invalidating disease with an unclear etiology and pathophysiology that affects middle-aged people. FHN may lead to joint collapse and require invasive treatments. Because of its clinical and socioeconomic significance, an early diagnosis, staging and appropriate treatment are required. Unfortunately, to date a unique algorithm for the treatment of FHN has not been defined. OBJECTIVE: In this report we summarize the Tenth European Consensus Conference on hyperbaric medicine (April 2016, France), during which experts from Europe revised the list of accepted indications for hyperbaric oxygen (HBO₂) treatment, including FHN...
November 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/29208853/investigations-of-cartilage-matrix-degeneration-in-patients-with-early-stage-femoral-head-necrosis
#9
Ronghua Xu, Bo Wei, Jiayi Li, Chenyu Huang, Rongcai Lin, Cheng Tang, Yan Xu, Qingqiang Yao, Liming Wang
BACKGROUND The purpose of this study was to explore changes in cartilage matrix in early-stage femoral head necrosis (FHN). MATERIAL AND METHODS Femoral head samples of patients with early FHN were collected during total hip arthroplasty (THA), high-field 7.0T MRI scans were performed in vitro, and the average T2 values were calculated. Cartilage samples were obtained from the weight-bearing area (FHN group) and non-weight-bearing area (Control group), divided into 3 equal parts and used for biochemical analysis, histopathological staining, and gene expression analysis...
December 6, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29153777/vaccination-with-a-human-parainfluenza-virus-type-3-chimeric-fhn-glycoprotein-formulated-with-a-combination-adjuvant-induces-protective-immunity
#10
R Garg, R Brownlie, L Latimer, V Gerdts, A Potter, S van Drunen Littel-van den Hurk
Human parainfluenza virus type 3 (PIV3) is a major cause of lower respiratory disease i.e. bronchitis, bronchiolitis or pneumonia, in infants and young children. Presently there is no licensed vaccine against PIV3. To produce an effective subunit vaccine, a chimeric FHN glycoprotein consisting of the N-terminal ectodomain of the fusion (F) protein linked to the haemagglutinin-neuraminidase (HN) protein without transmembrane domain, and secreted forms of the individual F and HN glycoproteins, were expressed in mammalian cells and purified...
December 18, 2017: Vaccine
https://www.readbyqxmd.com/read/29089882/a-route-to-chaotic-behavior-of-single-neuron-exposed-to-external-electromagnetic-radiation
#11
Peihua Feng, Ying Wu, Jiazhong Zhang
Non-linear behaviors of a single neuron described by Fitzhugh-Nagumo (FHN) neuron model, with external electromagnetic radiation considered, is investigated. It is discovered that with external electromagnetic radiation in form of a cosine function, the mode selection of membrane potential occurs among periodic, quasi-periodic, and chaotic motions as increasing the frequency of external transmembrane current, which is selected as a sinusoidal function. When the frequency is small or large enough, periodic, and quasi-periodic motions are captured alternatively...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/29064128/the-association-between-change-in-serum-bicarbonate-and-change-in-thyroid-hormone-levels-in-patients-receiving-conventional-or-more-frequent-maintenance-hemodialysis
#12
Alessio Molfino, Gerald J Beck, Minwei Li, Joan C Lo, George A Kaysen
AIM: Correction of metabolic acidosis in patients with chronic kidney disease has been associated with improvement in thyroid function. We examined whether changes in bicarbonate were associated with changes in thyroid function in patients with end-stage renal disease receiving conventional or more frequent hemodialysis. METHODS: In the Frequent Hemodialysis Network Trials, the relationship between changes in serum bicarbonate, free triiodothyronine (FT3) and free thyroxine (FT4) was examined among 147 and 48 patients with endogenous thyroid function who received conventional (3x/week) or more frequent (6x/week) hemodialysis (Daily Trial) or who received conventional or more frequent nocturnal hemodialysis (Nocturnal Trial)...
October 24, 2017: Nephrology
https://www.readbyqxmd.com/read/28340077/idiopathic-non-lupus-full-house-nephropathy-is-associated-with-poor-renal-outcome
#13
COMPARATIVE STUDY
Emilie C Rijnink, Y K Onno Teng, Tineke Kraaij, Ron Wolterbeek, Jan A Bruijn, Ingeborg M Bajema
Background: Full-house immunofluorescence in combination with various histopathologic lesions in the renal biopsies of patients without overt systemic lupus erythematosus (SLE) poses a diagnostic challenge. In this setting, the biopsy findings are sometimes termed non-lupus 'full-house nephropathy' (FHN). It is presently unknown whether idiopathic non-lupus FHN is clinicopathologically and prognostically distinct from lupus FHN. Methods: We included non-lupus FHN patients and lupus FHN controls (four or more American College of Rheumatology or Systemic Lupus International Collaborating Clinics criteria) who were biopsied between 1968 and 2014 at the Leiden University Medical Centre...
April 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339757/bone-characteristics-histopathology-and-chondrocyte-apoptosis-in-femoral-head-necrosis-induced-by-glucocorticoid-in-broilers
#14
M Zhang, C Y Shi, Z L Zhou, J F Hou
Femoral head necrosis (FHN) is a common disorder in fast-growing broilers in the poultry industry, but the pathogenesis of FHN has not been clarified completely. In the present study, glucocorticoid (GC) administration was used to induce FHN in broilers. Compared with normal birds, histopathology showed that the length of the articular cartilage of GC-induced FHN broilers was thicker while the proliferative zone and prehypertrophic zone were obviously thinner. Moreover, hematoxylin and eosin (HE) staining showed the apoptotic chondrocyte in the growth plate of the femoral head in FHN-affected birds...
June 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28303371/does-familial-risk-for-alcohol-use-disorder-predict-alcohol-hangover
#15
Richard Stephens, Kara Holloway, James A Grange, Lauren Owen, Kate Jones, Darren Kruisselbrink
AIMS: Positive family history of alcohol use disorder (FHP), a variable associated with propensity for alcohol use disorder (AUD), has been linked with elevated hangover frequency and severity, after controlling for alcohol use. This implies that hangover experiences may be related to AUD. However, inadequate control of alcohol consumption levels, low alcohol dose and testing for hangover during the intoxication phase detract from these findings. Here, we present further data pertinent to understanding the relationship between family history and alcohol hangover...
June 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28301073/thyroid-function-in-end-stage-renal-disease-and-effects-of-frequent-hemodialysis
#16
Joan C Lo, Gerald J Beck, George A Kaysen, Christopher T Chan, Alan S Kliger, Michael V Rocco, Minwei Li, Glenn M Chertow
INTRODUCTION: End-stage renal disease (ESRD) is associated with perturbations in thyroid hormone concentrations and an increased prevalence of hypothyroidism. Few studies have examined the effects of hemodialysis dose or frequency on endogenous thyroid function. METHODS: Within the Frequent Hemodialysis Network (FHN) trials, we examined the prevalence of hypothyroidism in patients with ESRD. Among those with endogenous thyroid function (without overt hyper/hypothyroidism or thyroid hormone supplementation), we examined the association of thyroid hormone concentration with multiple parameters of self-reported health status, and physical and cognitive performance, and the effects of hemodialysis frequency on serum thyroid stimulating hormone (TSH), free thyroxine (FT4), and free tri-iodothyronine (FT3) levels...
October 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28089366/limited-reduction-in-uremic-solute-concentrations-with-increased-dialysis-frequency-and-time-in-the-frequent-hemodialysis-network-daily-trial
#17
COMPARATIVE STUDY
Tammy L Sirich, Kara Fong, Brett Larive, Gerald J Beck, Glenn M Chertow, Nathan W Levin, Alan S Kliger, Natalie S Plummer, Timothy W Meyer
The Frequent Hemodialysis Network Daily Trial compared conventional three-times weekly treatment to more frequent treatment with a longer weekly treatment time in patients receiving in-center hemodialysis. Evaluation at one year showed favorable effects of more intensive treatment on left ventricular mass, blood pressure, and phosphate control, but modest or no effects on physical or cognitive performance. The current study compared plasma concentrations of uremic solutes in stored samples from 53 trial patients who received three-times weekly in-center hemodialysis for an average weekly time of 10...
May 2017: Kidney International
https://www.readbyqxmd.com/read/27778458/t-wave-alternans-heart-rate-turbulence-and-ventricular-ectopy-in-standard-versus-daily-hemodialysis-results-from-the-fhn-daily-trial
#18
RANDOMIZED CONTROLLED TRIAL
Rachel M Kaplan, Charles A Herzog, Brett Larive, Haris Subacius, Bruce D Nearing, Richard Verrier, Rod S Passman
BACKGROUND: Hemodialysis (HD) patients are at high risk of sudden cardiac death (SCD). HD 6-times/week (6x/wk) may reduce SCD risk compared to usual 3-times/week HD (3x/wk) by mechanisms unknown. T-wave alternans (TWA), heart rate turbulence (HRT), and ventricular ectopy (VE) are elevated in HD patients, but their response to 6x/wk HD has not been assessed. METHODS: Baseline and 1-year Holter recordings were analyzed from enrollees in the Frequent Hemodialysis Network Daily Trial, a randomized trial comparing 3x/wk to 6x/wk in 245 chronic HD patients...
November 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27774730/hyperprolactinemia-in-end-stage-renal-disease-and-effects-of-frequent-hemodialysis
#19
Joan C Lo, Gerald J Beck, George A Kaysen, Christopher T Chan, Alan S Kliger, Michael V Rocco, Glenn M Chertow
INTRODUCTION: End-stage renal disease is associated with elevations in circulating prolactin concentrations, but the association of prolactin concentrations with intermediate health outcomes and the effects of hemodialysis frequency on changes in serum prolactin have not been examined. METHODS: The FHN Daily and Nocturnal Dialysis Trials compared the effects of conventional thrice weekly hemodialysis with in-center daily hemodialysis (6 days/week) and nocturnal home hemodialysis (6 nights/week) over 12 months and obtained measures of health-related quality of life, self-reported physical function, mental health and cognition...
April 2017: Hemodialysis International
https://www.readbyqxmd.com/read/27772644/intensive-hemodialysis-and-potential-risks-with-increasing%C3%A2-treatment
#20
REVIEW
Michael A Kraus, Sheru Kansal, Michael Copland, Paul Komenda, Eric D Weinhandl, George L Bakris, Christopher T Chan, Richard J Fluck, John M Burkart
Although intensive hemodialysis (HD) can address important clinical problems, increasing treatment also introduces risks. In this review, we assess risks pertaining to 6 domains: vascular access complications, infection, mortality, loss of residual kidney function, solute balance, and patient and care partner burden. In the Frequent Hemodialysis Network (FHN) trials, short daily and nocturnal schedules increased the incidence of access complications, although the incidence of access loss was not statistically higher...
November 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
keyword
keyword
12488
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"