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https://www.readbyqxmd.com/read/28749559/recombinant-cccdna-of-hepatitis-b-virus-induces-long-term-viral-persistence-with-chronic-hepatitis-in-a-mouse-model
#1
Gaiyun Li, Yuanfei Zhu, Dianhui Shao, Hao Chang, Xiaoming Zhang, Dongming Zhou, Yueqiu Gao, Ke Lan, Qiang Deng
Covalently closed circular (ccc) DNA of hepatitis B virus (HBV) is critical for viral persistence in vivo. We recently reported a technique involving recombinant (r) cccDNA of HBV by site-specific DNA recombination. Using hydrodynamic injection, rcccDNA induces a temporarily prolonged HBV anigenemia in immunocompetent mice, similar to acute resolving HBV infection. In this study, we simulated the pathophysiological impact of chronic hepatitis by which to reproduce (r)cccDNA persistence in mouse models. We showed that rcccDNA achieved long-lasting persistence in the presence of a compromised immune response or when transcriptional activity was repressed...
July 27, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28749416/anti-oxidative-stress-activity-is-essential-for-amanita-caesarea-mediated-neuroprotection-on-glutamate-induced-apoptotic-ht22-cells-and-an-alzheimer-s-disease-mouse-model
#2
Zhiping Li, Xia Chen, Wenqian Lu, Shun Zhang, Xin Guan, Zeyu Li, Di Wang
Amanita caesarea, an edible mushroom found mainly in Asia and southern Europe, has been reported to show good antioxidative activities. In the present study, the neuroprotective effects of A. caesarea aqueous extract (AC) were determined in an l-glutamic acid (l-Glu) induced HT22 cell apoptosis model, and in a d-galactose (d-gal) and AlCl₃-developed experimental Alzheimer's disease (AD) mouse model. In 25 mM of l-Glu-damaged HT22 cells, a 3-h pretreatment with AC strongly improved cell viability, reduced the proportion of apoptotic cells, restored mitochondrial function, inhibited the over-production of intracellular reactive oxygen species (ROS) and Ca(2+), and suppressed the high expression levels of cleaved-caspase-3, calpain 1, apoptosis-inducing factor (AIF) and Bax...
July 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28749360/multi-hypergraph-learning-for-incomplete-multi-modality-data
#3
Mingxia Liu, Yue Gao, Pew-Thian Yap, Dinggang Shen
Multi-modality data convey complementary information that can be used to improve the accuracy of prediction models in disease diagnosis. However, effectively integrating multi-modality data remains a challenging problem especially when the data are incomplete. For instance, more than half of the subjects in the Alzheimer's Disease Neuroimaging Initiative (ADNI) database have no fluorodeoxyglucose positron emission tomography (FDG-PET) and cerebrospinal fluid (CSF) data. Currently, there are two commonly-used strategies to handle the problem of incomplete data: 1) discard samples having missing features, and 2) impute those missing values via specific techniques...
July 26, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28749356/improving-alzheimeres-disease-classification-by-combining-multiple-measures
#4
Jin Liu, Jianxin Wang, Zhenjun Tang, Bin Hu, Fang-Xiang Wu, Yi Pan
Several anatomical magnetic resonance imaging (MRI) markers for Alzheimer's disease (AD) have been identified. Cortical gray matter volume, cortical thickness, and subcortical volume have been used successfully to assist the diagnosis of Alzheimer's disease (AD) including its early warning and developing stages, e.g., mild cognitive impairment (MCI) including MCI converted to AD (MCIc) and MCI not converted to AD (MCInc). Currently, these anatomical MRI measures have mainly been used separately. Thus, the full potential of anatomical MRI scans for AD diagnosis might not yet have been used optimally...
July 25, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28749321/design-and-implementation-of-an-affordable-public-sector-electronic-medical-record-in-rural-nepal
#5
Anant Raut, Chase Yarbrough, Vivek Singh, Bikash Gauchan, David Citrin, Varun Verma, Jessica Hawley, Dan Schwarz, Alex Harsha Bangura, Biplav Shrestha, Ryan Schwarz, Mukesh Adhikari, Duncan Maru
INTRODUCTION: Globally, electronic medical records are central to the infrastructure of modern healthcare systems. Yet the vast majority of electronic medical records have been designed for resource-rich environments and are not feasible in settings of poverty. Here we describe the design and implementation of an electronic medical record at a public sector district hospital in rural Nepal, and its subsequent expansion to an additional public sector facility.DevelopmentThe electronic medical record was designed to solve for the following elements of public sector healthcare delivery: 1) integration of the systems across inpatient, surgical, outpatient, emergency, laboratory, radiology, and pharmacy sites of care; 2) effective data extraction for impact evaluation and government regulation; 3) optimization for longitudinal care provision and patient tracking; and 4) effectiveness for quality improvement initiatives...
June 23, 2017: Journal of Innovation in Health Informatics
https://www.readbyqxmd.com/read/28749320/reliability-of-heart-rate-mobile-apps-in-young-healthy-adults-exploratory-study-and-research-directions
#6
Maria Parpinel, Laura Scherling, Stefano Lazzer, Vincenzo Della Mea
BACKGROUND: Recently, a number of smartphone apps appeared that allow for heart rate measurements basing on the photoplethysmography principle. In fact, almost every smartphone now has a camera with flash that could be used for that. Some studies appeared on the reliability of some of those apps, with heterogeneous results. OBJECTIVES: The present study aims at adding up evidence in particular during physical activity, by comparing 3 apps on two different platforms (IOs and Android), on a broad range of heart rates...
June 30, 2017: Journal of Innovation in Health Informatics
https://www.readbyqxmd.com/read/28749318/probabilistic-linkage-to-enhance-deterministic-algorithms-and-reduce-data-linkage-errors-in-hospital-administrative-data
#7
Gareth Hagger-Johnson, Katie Harron, Harvey Goldstein, Robert Aldridge, Ruth Gilbert
 BACKGROUND: The pseudonymisation algorithm used to link together episodes of care belonging to the same patients in England (HESID) has never undergone any formal evaluation, to determine the extent of data linkage error. OBJECTIVE: To quantify improvements in linkage accuracy from adding probabilistic linkage to existing deterministic HESID algorithms. METHODS: Inpatient admissions to NHS hospitals in England (Hospital Episode Statistics, HES) over 17 years (1998 to 2015) for a sample of patients (born 13/28th of months in 1992/1998/2005/2012)...
June 30, 2017: Journal of Innovation in Health Informatics
https://www.readbyqxmd.com/read/28749022/effects-of-gnrh-a-progesterone-releasing-device-and-energy-balance-on-an-oestrus-synchronisation-program-in-anoestrous-dairy-cows
#8
S K Sahu, J F Cockrem, T J Parkinson, R A Laven
OBJECTIVE: The aim of this research was to study the roles of the day 0 energy balance and gonadotrophin-releasing hormone (GnRH) and progesterone levels on dominant follicle (DF) and corpus luteum (CL) development during the first 7 days of a gonadotrophin-prostaglandin-gonadotrophin (GPG) + progesterone (P4) program in anoestrous dairy cows. METHODS: Cows (n = 81) were allocated to one of the three treatments: (1) GPG + P4 (days 0 and 9, 100 µg GnRH; day 0-7, intravaginal P4 device; day 7, 500 µg PGF2α ); (2) GPG (as for treatment 1 but excluding the P4 device) and (3) prostaglandin + GnRH + P4 (as for treatment 1, but excluding day 0 GnRH)...
August 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28749011/simultaneous-quantification-of-volitinib-and-gefitinib-in-rat-plasma-by-hplc-ms-ms-for-application-to-a-pharmacokinetic-study-in-rats
#9
Chi-Kyoung Noh, Jong-Hwa Lee, Min-Soo Kim, Han-Joo Maeng, Suk-Jae Chung
A rapid, simple and accurate procedure was developed and validated for the simultaneous quantification of two anticancer agents, volitinib and gefitinib in rat plasma by high-performance liquid chromatography with tandem mass spectrometry. The samples were separated by gradient elution from a CN column within five minutes, using 0.1% formic acid in acetonitrile and 10 mM ammonium formate solution (pH 3.0) as mobile phase. When plasma samples were deproteinated by adding methanol, the analytes in the extract were detected in the positive ionization mode with the tracer ion mass of 346...
July 27, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28748974/cranberries-improve-postprandial-glucose-excursions-in-type-2-diabetes
#10
Jace Schell, Nancy M Betts, Megan Foster, R Hal Scofield, Arpita Basu
Recent research supports a favorable role of cranberries on cardiometabolic health. Postprandial metabolism, especially hyperglycemia, has been shown to be an independent cardiovascular risk and few clinical studies have reported the role of berries in improving postprandial dysmetabolism. We investigated the postprandial effects of dried cranberries following a high-fat breakfast challenge in obese participants with type 2 diabetes (T2DM), in a randomized crossover trial. Blood draw and vascular measurements were conducted at fasting, 1, 2 and 4 hours (h), following the consumption of a fast-food style high-fat breakfast (70 g fat, 974 kcal) with or without cranberries (40 g)...
July 27, 2017: Food & Function
https://www.readbyqxmd.com/read/28748901/renal-manifestations-in-hypocomplementic-urticarial-vasculitis-syndrome-is-it-a-distinct-pathology
#11
Badriya AlHermi, Zakiya Al Mosawi, Deena Mohammed
Hypocomplementic urticarial vasculitis syndrome (HUVS) is an autoimmune disease characterized by recurrent urticaria, arthritis, and glomerulonephritis (GN). Anti-C1q antibody is the marker of HUVS together with low levels of classical pathway complements which are C2, C3, C4, and C1q. We report a case of a 6-year-old boy who presented with episodes of rashes, injected conjunctiva, abdominal pain, and arthritis, diagnosed as HUVS. He had low C3, low CH50, normal C4, and positive C1q antibody. His urinalysis showed intermittent microscopic hematuria only...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28748560/results-of-allergen-specific-immunotherapy-in-atopic-dogs-with-malassezia-hypersensitivity-a-retrospective-study-of-16-cases
#12
Liselotte Åberg, Katarina Varjonen, Susanne Åhman
BACKGROUND: Hypersensitivity reactions to Malassezia spp have been shown to occur in dogs with atopic dermatitis (AD) and to cause exacerbation of clinical signs. Improvement of clinical signs following use of antifungal medication is seen with both Malassezia overgrowth or Malassezia hypersensitivity (MHS). Subcutaneous immunotherapy (SCIT) is considered a safe and effective treatment for management of canine AD. Adverse effects are considered rare. OBJECTIVES: To report on the use of SCIT with Malassezia extracts in mono-sensitized dogs...
July 26, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28748496/huperzine-a-alleviates-neuroinflammation-oxidative-stress-and-improves-cognitive-function-after-repetitive-traumatic-brain-injury
#13
Zhengrong Mei, Peiying Zheng, Xiangping Tan, Ying Wang, Bing Situ
Traumatic brain injury (TBI) may trigger secondary injury cascades including endoplasmic reticulum stress, oxidative stress, and neuroinflammation. Unfortunately, there are no effective treatments targeting either primary or secondary injuries that result in long-term detrimental consequences. Huperzine A (HupA) is a potent acetylcholinesterase inhibitor (AChEI) that has been used treatment of Alzheimer's disease (AD). This study aimed to explore the neuroprotective effects of HupA in TBI and its possible mechanisms...
July 26, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28748493/cost-effectiveness-of-preimplantation-genetic-screening-for-women-older-than-37-undergoing-in-vitro-fertilization
#14
Stephen C Collins, Xiao Xu, Winifred Mak
PURPOSE: Adding preimplantation genetic screening to in vitro fertilization has been shown to increase live birth rate in women older than 37. However, preimplantation genetic screening is an expensive procedure. Information on the cost-effectiveness of preimplantation genetic screening can help inform clinical decision making. METHODS: We constructed a decision analytic model for a hypothetical fresh, autologous in vitro fertilization cycle (with versus without preimplantation genetic screening) for women older than age 37 who had a successful oocyte retrieval and development of at least one blastocyst...
July 27, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28748465/automated-patch-clamp-methods-for-the-herg-cardiac-potassium-channel
#15
Sylvie Houtmann, Brigitte Schombert, Camille Sanson, Michel Partiseti, G Andrees Bohme
The human Ether-a-go-go Related Gene (hERG) product has been identified as a central ion channel underlying both familial forms of elongated QT interval on the electrocardiogram and drug-induced elongation of the same QT segment. Indeed, reduced function of this potassium channel involved in the repolarization of the cardiac action potential can produce a type of life-threatening cardiac ventricular arrhythmias called Torsades de Pointes (TdP). Therefore, hERG inhibitory activity of newly synthetized molecules is a relevant structure-activity metric for compound prioritization and optimization in medicinal chemistry phases of drug discovery...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28748448/adding-a-brief-self-report-cognitive-tool-to-the-ihds-improves-effectiveness-of-identifying-patients-with-hiv-associated-dementia-in-south-africa
#16
Hetta Gouse, Martine Casson-Crook, Eric H Decloedt, John A Joska, Kevin G F Thomas
We compared the diagnostic accuracy of two brief screening tools (the International HIV Dementia Scale (IHDS), and the IHDS combined with a novel self-report instrument, the HIV Cognitive Symptom Questionnaire (HCSQ)) with that of three brief neuropsychological screening batteries (a 2-, a 3-, and a 4-test battery, each consisting of standardized cognitive tests) in discriminating individuals with HIV-associated dementia (HAD) from those with milder forms of cognitive impairment. We analyzed data from 94 isiXhosa-speaking South African HIV-infected participants who were screened as part of a clinical trial evaluating adjunctive treatment in patients with moderate to severe HIV-associated cognitive impairment...
July 26, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28748446/selenium-protects-against-lead-induced-apoptosis-via-endoplasmic-reticulum-stress-in-chicken-kidneys
#17
Xiaoyu Wang, Yang An, Wanying Jiao, Zhongyuan Zhang, Hui Han, Xianhong Gu, Xiaohua Teng
Lead (Pb) is a toxic heavy metal and can harm organisms by inducing apoptosis. Selenium (Se), an essential trace element for humans and animals, can alleviate heavy metal toxicity. The aim of our study is to investigate alleviative effect of Se on Pb-induced apoptosis via endoplasmic reticulum (ER) stress in chicken kidneys. One hundred and eighty male chickens were randomly divided into four groups at 7 days of age and were fed with commercial diet (containing 0.49 mg/kg Se) and drinking water, Na2SeO3-added commercial diet (containing 1 mg/kg Se) and drinking water, the commercial diet and (CH3OO)2Pb-added drinking water (containing 350 mg/L Pb), and Na2SeO3-added commercial diet (containing 1 mg/kg Se) and (CH3OO)2Pb-added drinking water (containing 350 mg/L Pb), respectively...
July 26, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28748426/quality-of-care-in-gout-a-clinical-audit-on-treating-to-the-target-with-urate-lowering-therapy-in-real-world-gout-patients
#18
Carly A Janssen, Tim L Th A Jansen, Martijn A H Oude Voshaar, Harald E Vonkeman, Mart A F J van de Laar
The current paper aimed to describe the quality of care for gout patients by showing the clinical outcomes achieved in two patient cohorts in which differing targeted urate lowering therapy (ULT) treatment approaches were employed, both aiming to reach the European League Against Rheumatism recommended serum urate (sUA) targets. A retrospective medical chart review study was conducted. Data from the medical records of gout patients from two clinical centers in The Netherlands, both applying targeted ULT treatments (albeit using different approaches), were reviewed...
July 26, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28748355/retrospective-comparison-of-s-1-plus-cisplatin-versus-s-1-monotherapy-for-the-treatment-of-advanced-gastric-cancer-patients-with-positive-peritoneal-cytology-but-without-gross-peritoneal-metastasis
#19
Izuma Nakayama, Keisho Chin, Tomohiro Matsushima, Daisuke Takahari, Mariko Ogura, Eiji Shinozaki, Mitsukuni Suenaga, Masato Ozaka, Takeru Wakatsuki, Takashi Ichimura, Osumi Hiroki, Kensei Yamaguchi
BACKGROUND: Peritoneal cytology positive for carcinoma cells (CY+) is an independent poor prognostic factor in gastric cancer, and patients with CY+ are diagnosed with stage IV disease. However, there is no standard treatment strategy for CY+ gastric cancer, whereas combination chemotherapy with fluoropyrimidine and platinum has been established as the standard treatment for unresectable advanced gastric cancer or after R2 resection. Herein, we assessed whether adding cisplatin to S-1 (SP) could improve the outcome of CY+ gastric cancer patients, as compared to S-1 monotherapy...
July 26, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28748343/a-phase-i-ii-study-of-gemcitabine-during-radiotherapy-in-children-with-newly-diagnosed-diffuse-intrinsic-pontine-glioma
#20
Sophie E M Veldhuijzen van Zanten, Fatma E El-Khouly, Marc H A Jansen, Dewi P Bakker, Esther Sanchez Aliaga, Cornelis J A Haasbeek, Nicole I Wolf, C Michel Zwaan, W Peter Vandertop, Dannis G van Vuurden, Gertjan J L Kaspers
The purpose of this phase I/II, open-label, single-arm trial is to investigate the safety, tolerability, maximum tolerated dose and preliminary efficacy of the potential radiosensitizer gemcitabine, administered concomitantly to radiotherapy, in children with newly diagnosed diffuse intrinsic pontine glioma (DIPG). Six doses of weekly gemcitabine were administered intravenously, concomitantly to 6 weeks of hyperfractionated radiotherapy. Successive cohorts received increasing doses of 140, 175 and 200 mg/m(2) gemcitabine, respectively, following a 3 + 3 dose-escalation schedule without expansion cohort...
July 26, 2017: Journal of Neuro-oncology
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