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https://www.readbyqxmd.com/read/28229635/oral-administration-of-fumonisin-b1-and-t-2-individually-and-in-combination-affects-hepatic-total-and-mitochondrial-membrane-lipid-profile-of-rabbits
#1
A Szabó, J Szabó-Fodor, H Fébel, M Mézes, G Bajzik, M Kovács
Weaned rabbits were fed diets contaminated with 2 mg/kg diet T-2 toxin alone, or 10 mg/kg diet fumonisin B1 (FB1) alone, and both toxins in combination (2 + 10 mg/kg, respectively) compared to a toxin-free control diet. Samplings were performed after 4 weeks (blood and liver). Bodyweight of T-2-fed group was lower after 4 weeks; the liver weight was increased dramatically (threefold of control). Liver total phospholipids (PLs) provided slight alterations in the fatty acid (FA) composition; all three toxin-treated groups showed a decrease in palmitoleic acid (C16:1 n7) proportion...
September 2016: Physiol Int
https://www.readbyqxmd.com/read/28228410/prediction-of-the-true-iol-position
#2
Sverker Norrby, Rolf Bergman, Nino Hirnschall, Yutaro Nishi, Oliver Findl
PURPOSE: To develop algorithms for preoperative estimation of the true postoperative intraocular lens (IOL) position to be used for IOL power calculation. SETTING: Moorfields Eye Hospital NHS Foundation Trust, London, UK. METHODS: Fifty patients were implanted randomly with a 3-piece IOL model in one eye and a 1-piece model in the other eye. Preoperatively, the IOLMaster was used to determine axial length, anterior chamber depth and mean corneal radius...
February 22, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28227673/colorimetric-determinations-of-lithium-levels-in-drop-volumes-of-human-plasma-for-monitoring-patients-with-bipolar-mood-disorder
#3
M Qassem, M Hickey, P A Kyriacou, M Qassem, M Hickey, P A Kyriacou, M Qassem, M Hickey, P A Kyriacou
Lithium preparations are considered the most reliable form of mood stabilizing medication for patients with Bipolar disorder. Nevertheless, lithium is a toxic element and its therapeutic range is extremely narrow, with levels of 0.61.0 mEq considered normal, whereas levels above 1.5 mEq are toxic. Thus unfortunately, many patients reach toxic levels that lead to unnecessary complications. It is believed that personal monitoring of blood lithium levels would benefit patients taking lithium medication. Therefore, our aim is to develop a personal lithium blood level analyzer for patients with bipolar mood disorder, and we report here our initial results of a colorimetric-based method used to test drop-volumes of human plasma that had been spiked with lithium...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227000/missing-rri-interpolation-for-hrv-analysis-using-locally-weighted-partial-least-squares-regression
#4
Keisuke Kamata, Koichi Fujiwara, Toshiki Yamakawa, Manabu Kano, Keisuke Kamata, Koichi Fujiwara, Toshiki Yamakawa, Manabu Kano
The R-R interval (RRI) fluctuation in electrocardiogram (ECG) is called heart rate variability (HRV). Since HRV reflects autonomic nervous function, HRV-based health monitoring services, such as stress estimation, drowsy driving detection, and epileptic seizure prediction, have been proposed. In these HRV-based health monitoring services, precise R wave detection from ECG is required; however, R waves cannot always be detected due to ECG artifacts. Missing RRI data should be interpolated appropriately for HRV analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224708/out-on-a-limb-bandicoot-limb-co-variation-suggests-complex-impacts-of-development-and-adaptation-on-marsupial-forelimb-evolution
#5
Kathleen Garland, Ariel Marcy, Emma Sherratt, Vera Weisbecker
Marsupials display far less forelimb diversity than placentals, possibly because of the laborious forelimb-powered climb to the pouch performed by most marsupial neonates. This is thought to result in stronger morphological integration (i.e., higher co-variance) within the marsupial forelimb skeleton, and lower integration between marsupial fore- and hind limbs, compared to other mammals. Possible mechanisms for this constraint are a fundamental developmental change in marsupial limb patterning, or alternatively more immediate perinatal biomechanical and metabolic requirements...
February 22, 2017: Evolution & Development
https://www.readbyqxmd.com/read/28224688/liver-tissue-metabolic-profiling-and-pathways-of-nonalcoholic-steatohepatitis-in-rats
#6
Suwen Qi, Si Huang, Xin Chen, Qin Huo, Ni Xie, Jun Xia
AIM: The mechanisms of nonalcoholic steatohepatitis (NASH) in hepatocytes is unknown, and our aim is to study the tissue metabolic profiling and pathways of NASH. METHODS: We built rat models for simple steatosis and NASH and analyzed the liver extract using a liquid chromatograph-mass spectrometer (LC-MS). The acquired data were processed by multivariate principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) to obtain metabolic profiling...
February 22, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28224248/vis-nir-spectroscopy-with-moving-window-pls-method-applied-to-rapid-analysis-of-whole-blood-viscosity
#7
Jiemei Chen, Zhiwei Yin, Yi Tang, Tao Pan
A rapid analytical method of human whole blood viscosity with low, medium, and high shear rates [WBV(L), WBV(M), and WBV(H), respectively] was developed using visible and near-infrared (Vis-NIR) spectroscopy combined with a moving-window partial least squares (MW-PLS) method. Two groups of peripheral blood samples were collected for modeling and validation. Separate analytical models were established for male and female groups to avoid interference in different gender groups and improve the homogeneity and prediction accuracy...
February 21, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28223927/effects-of-stroke-on-ipsilesional-end-effector-kinematics-in-a-multi-step-activity-of-daily-living
#8
Philipp Gulde, Charmayne Mary Lee Hughes, Joachim Hermsdörfer
Background: Stroke frequently impairs activities of daily living (ADL) and deteriorates the function of the contra- as well as the ipsilesional limbs. In order to analyze alterations of higher motor control unaffected by paresis or sensory loss, the kinematics of ipsilesional upper limb movements in patients with stroke has previously been analyzed during prehensile movements and simple tool use actions. By contrast, motion recording of multi-step ADL is rare and patient-control comparisons for movement kinematics are largely lacking...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28220335/multivariate-evaluation-of-thyroid-imaging-reporting-and-data-system-ti-rads-in-diagnosis-malignant-thyroid-nodule-application-to-pca-and-pls-da-analysis
#9
Tan Zhang, Fangxuan Li, Jiali Mu, Juntian Liu, Sheng Zhang
OBJECTIVE: To explore the significance of ultrasonic features in differential diagnosis of thyroid nodules via combining the thyroid imaging reporting and data system (TI-RADS) and multivariate statistical analysis. METHODS: Patients who received surgical treatment and was diagnosed with single thyroid nodule by postoperative pathology and preoperative ultrasound were enrolled in this study. Multivariate analysis was applied to assess the significant ultrasonic features which correlated with identifying benign or malignance and grading the TI-RADS classification of thyroid nodule...
February 20, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28219782/characterization-of-phospholipid-nitroxidation-by-lc-ms-in-biomimetic-models-and-in-h9c2-myoblast-using-a-lipidomic-approach
#10
Tânia Melo, Pedro Domingues, Teresa M Ribeiro-Rodrigues, Henrique Girão, Marcela A Segundo, M Rosário M Domingues
Under nitroxidative stress conditions, lipids are prone to be modified by reaction with reactive nitrogen species (RNS) and different modifications were reported to occur in fatty acids. However, in the case of phospholipids (PL) studied under nitroxidative stress conditions, only nitroalkene derivatives of phosphatidylcholine (PC) and phosphatidylethanolamine (PE), were reported when using both in vitro biomimetic conditions and in vivo model system of type 1 diabetes mellitus. Therefore, in order to further explore other nitroxidative modifications of PL, a biomimetic model of nitroxidation combined with liquid chromatography mass spectrometry (MS) and MS/MS approaches were used to characterize the nitrated and nitroxidized derivatives of PCs and PEs...
February 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28218729/exhaled-breath-metabolomics-for-the-diagnosis-of-pneumonia-in-intubated-and-mechanically-ventilated-intensive-care-unit-icu-patients
#11
Pouline M P van Oort, Sanne de Bruin, Hans Weda, Hugo H Knobel, Marcus J Schultz, Lieuwe D Bos, On Behalf Of The Mars Consortium
The diagnosis of hospital-acquired pneumonia remains challenging. We hypothesized that analysis of volatile organic compounds (VOCs) in exhaled breath could be used to diagnose pneumonia or the presence of pathogens in the respiratory tract in intubated and mechanically-ventilated intensive care unit patients. In this prospective, single-centre, cross-sectional cohort study breath from mechanically ventilated patients was analysed using gas chromatography-mass spectrometry. Potentially relevant VOCs were selected with a p-value < 0...
February 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28216906/quality-by-design-multivariate-model-for-multicomponent-quantification-in-refining-process-of-honey
#12
Xiaoying Li, Zhisheng Wu, Xin Feng, Shanshan Liu, Xiaojie Yu, Qun Ma, Yanjiang Qiao
OBJECTIVE: A method for rapid analysis of the refining process of honey was developed based on near-infrared (NIR) spectroscopy. METHODS: Partial least square calibration models were built for the four components after the selection of the optimal spectral pretreatment method and latent factors. RESULTS: The models covered the samples of different temperatures and time points, therefore the models were robust and universal. CONCLUSIONS: These results highlighted that the NIR technology could extract the information of critical process and provide essential process knowledge of the honey refining process...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216859/prevalence-of-phantom-limb-pain-stump-pain-and-phantom-limb-sensation-among-the-amputated-cancer-patients-in-india-a-prospective-observational-study
#13
Arif Ahmed, Sushma Bhatnagar, Seema Mishra, Deepa Khurana, Saurabh Joshi, Syed Mehmood Ahmad
INTRODUCTION: The phantom limb pain (PLP) and phantom limb sensation (PLS) are very common among amputated cancer patients, and they lead to considerable morbidity. In spite of this, there is a lack of epidemiological data of this phenomenon among the Asian population. This study was done to provide the data from Indian population. METHODS: The prevalence of PLP, stump pain (SP), and PLS was prospectively analyzed from the amputated cancer patients over a period of 2 years in Dr...
January 2017: Indian Journal of Palliative Care
https://www.readbyqxmd.com/read/28215811/intra-annual-variation-of-the-association-between-agricultural-best-management-practices-and-stream-nutrient-concentrations
#14
Nolan J T Pearce, Adam G Yates
Temporal variation may influence the ability of best management practices (BMPs) to mitigate the loss of agricultural pollutants to streams. Our goal was to assess variation in mitigation effects of BMPs by examining the associations between instream nutrient concentrations and the abundance and location of four structural BMPs over a hydrologic year. Water samples were collected monthly (Nov. 2013-Oct. 2014) in 15 headwater streams representing a gradient of BMP use in Southern Ontario, Canada. Partial least squares (PLS) regression models were used to associate two groups of collinear nutrient forms with the abundance and location of BMPs, antecedent precipitation and time of year...
February 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28215317/docosahexaenoic-acid-supplementation-during-pregnancy-as-phospholipids-did-not-improve-the-incorporation-of-this-fatty-acid-into-rat-fetal-brain-compared-with-the-triglyceride-form
#15
Antonio Gázquez, Inmaculada Hernández-Albaladejo, Elvira Larqué
Prenatal docosahexaenoic acid (DHA) supply is important to ensure an adequate infant neurodevelopment. Several fat supplements with DHA under different chemical structures are available. There is an increased placental phospholipase activity at the end of pregnancy. The hypothesis of this study was to discern whether DHA consumption during pregnancy as phospholipids (PLs) could be more available for placental DHA uptake and fetal accretion than triglycerides (TGs) form. We aimed to evaluate maternofetal DHA status in pregnant rats fed with DHA as PL from egg yolk or TG from algae oil to determine which source might be most effective during pregnancy...
January 2017: Nutrition Research
https://www.readbyqxmd.com/read/28213300/experiences-of-stigma-and-discrimination-faced-by-family-caregivers-of-people-with-schizophrenia-in-india
#16
Mirja Koschorke, R Padmavati, Shuba Kumar, Alex Cohen, Helen A Weiss, Sudipto Chatterjee, Jesina Pereira, Smita Naik, Sujit John, Hamid Dabholkar, Madhumitha Balaji, Animish Chavan, Mathew Varghese, R Thara, Vikram Patel, Graham Thornicroft
Stigma associated with schizophrenia significantly affects family caregivers, yet few studies have examined the nature and determinants of family stigma and its relationship to their knowledge about the condition. This paper describes the experiences and determinants of stigma reported by the primary caregivers of people living with schizophrenia (PLS) in India. The study used mixed methods and was nested in a randomised controlled trial of community care for people with schizophrenia. Between November 2009 and October 2010, data on caregiver stigma and functional outcomes were collected from a sample of 282 PLS-caregiver dyads...
February 1, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28213242/cocaine-profiling-implementation-of-a-predictive-model-by-atr-ftir-coupled-with-chemometrics-in-forensic-chemistry
#17
Stefano Materazzi, Adolfo Gregori, Luigi Ripani, Azzurra Apriceno, Roberta Risoluti
In this study, a strategy based on Infrared Spectroscopy with Fourier Transformed and Attenuated Total Reflectance associated with chemometrics (ATR-FTIR) is proposed to identify the chemical "fingerprint" of cocaine samples. To this end, standard mixtures of cocaine and cuttings at differents ratio were investigated in order to develop a multivariate classification model to simultaneously predict the composition of the samples and to obtain a profile of adulteration of cocaine seizures. In addition, the application of a Partial Least Squares (PLS) and Principal Component Regression (PCR) calibration approaches were found to be a useful tool to predict the content of cocaine, caffeine, procaine, lidocaine and phenacetin in drug seizures...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28212286/performance-analysis-of-physical-layer-security-of-opportunistic-scheduling-in-multiuser-multirelay-cooperative-networks
#18
Kyusung Shim, Nhu Tri Do, Beongku An
In this paper, we study the physical layer security (PLS) of opportunistic scheduling for uplink scenarios of multiuser multirelay cooperative networks. To this end, we propose a low-complexity, yet comparable secrecy performance source relay selection scheme, called the proposed source relay selection (PSRS) scheme. Specifically, the PSRS scheme first selects the least vulnerable source and then selects the relay that maximizes the system secrecy capacity for the given selected source. Additionally, the maximal ratio combining (MRC) technique and the selection combining (SC) technique are considered at the eavesdropper, respectively...
February 15, 2017: Sensors
https://www.readbyqxmd.com/read/28198811/%C3%AE-thalassemia-patients-revealed-a-significant-change-of-untargeted-metabolites-in-comparison-to-healthy-individuals
#19
Syed Ghulam Musharraf, Ayesha Iqbal, Saqib Hussain Ansari, Sadia Parveen, Ishtiaq Ahmad Khan, Amna Jabbar Siddiqui
β-Thalassemia is one of the most prevalent forms of congenital blood disorders characterized by reduced hemoglobin levels with severe complications, affecting all dimensions of life. The mechanisms underlying the phenotypic heterogeneity of β-thalassemia are still poorly understood. We aimed to work over metabolite biomarkers to improve mechanistic understanding of phenotypic heterogeneity and hence better management of disorder at different levels. Untargeted serum metabolites were analyzed after protein precipitation and SPE (solid phase extraction) from 100 β-thalassemia patients and 61 healthy controls using GC-MS...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28195499/development-of-a-direct-spectrophotometric-and-chemometric-method-for-determining-food-dye-concentrations
#20
Erin Arroz, Michael Jordan, Gerard G Dumancas
An ultraviolet visible (UV-Vis) spectrophotometric and partial least squares (PLS) chemometric method was developed for the simultaneous determination of erythrosine B (red), Brilliant Blue, and tartrazine (yellow) dyes. A training set (n = 64) was generated using a full factorial design and its accuracy was tested in a test set (n = 13) using a Box-Behnken design. The test set garnered a root mean square error (RMSE) of 1.79 × 10(-7) for blue, 4.59 × 10(-7) for red, and 1.13 × 10(-6) for yellow dyes...
January 1, 2017: Applied Spectroscopy
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