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https://www.readbyqxmd.com/read/29051978/symptom-prevalence-bother-and-treatment-satisfaction-in-men-with-lower-urinary-tract-symptoms-in-southeast-asia-a-multinational-cross-sectional-survey
#1
Lap-Yin Ho, Peggy Sau-Kwan Chu, David Terrence Consigliere, Zulkifli Md Zainuddin, David Bolong, Chi-Kwok Chan, Molly Eng, Dac Nhat Huynh, Wachira Kochakarn, Marie Carmela M Lapitan, Dinh Khanh Le, Quang Dung Le, Frank Lee, Bannakij Lojanapiwat, Bao-Ngoc Nguyen, Teng-Aik Ong, Buenaventura Jose Reyes, Apirak Santingamkun, Woon-Chau Tsang, Paul Abrams
PURPOSE: The overall objective of the survey was to systematically examine patients' perspectives on lower urinary tract symptoms (LUTS) and their treatment in Southeast Asia. METHODS: A multinational cross-sectional survey involving adult men seeking consultation at urology outpatient clinics because of LUTS in Southeast Asia was conducted using convenience sampling. Self-reported prevalence, bother, treatment and treatment satisfaction of selected LUTS including urgency, nocturia, slow stream, and post-micturition dribble were evaluated...
October 19, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29046993/synthesis-and-in-vitro-performance-of-polypyrrole-coated-iron-platinum-nanoparticles-for-photothermal-therapy-and-photoacoustic-imaging
#2
Thi Tuong Vy Phan, Nhat Quang Bui, Madhappan Santha Moorthy, Kang Dae Lee, Junghwan Oh
Multifunctional nano-platform for the combination of photo-based therapy and photoacoustic imaging (PAI) for cancer treatment has recently attracted much attention to nanotechnology development. In this study, we developed iron-platinum nanoparticles (FePt NPs) with the polypyrrole (PPy) coating as novel agents for combined photothermal therapy (PTT) and PAI. The obtained PPy-coated FePt NPs (FePt@PPy NPs) showed excellent biocompatibility, photothermal stability, and high near-infrared (NIR) absorbance for the combination of PTT and PAI...
October 18, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29042809/implementation-of-gina-guidelines-in-asthma-management-by-primary-care-physicians-in-vietnam
#3
Vinh Nhu Nguyen, Quynh Nhat Nguyen, Pham Le An, Niels H Chavannes
BACKGROUND: Asthma control is suboptimal in Vietnam. Lack of knowledge of primary care physicians (PCPs) for asthma management may potentially be one of the causes. PURPOSE: The aim of this study was to assess the knowledge and practice of PCPs' asthma management based on the Global Initiative for Asthma (GINA) guidelines (2015 update). METHODS: A cross-sectional study with convenience sampling was conducted among PCPs in an urban and rural area of Vietnam using questionnaires related to asthma patients daily practice: use of spirometry and the asthma control test (ACT), prescription of asthma medications, and frequency of consultations...
2017: International Journal of General Medicine
https://www.readbyqxmd.com/read/29027551/synthesis-of-free-standing-ta3n5-nanotube-membranes-and-flow-through-visible-light-photocatalytic-applications
#4
Lei Wang, Anca Mazare, Imgon Hwang, Seulgi So, Nhat Truong Nguyen, Patrik Schmuki
We report on free-standing Ta3N5 nanotubular membranes with open top and bottom, used as visible-light-active, flow-through photocatalytic micro-reactors. We grow first a robust anodic Ta2O5 layer, lift-off a membrane and convert to Ta3N5. Such membranes can easily, in a flow-through mode, degrade methylene blue under visible light (wavelength >400 nm) or solar illumination.
October 13, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29025661/low-systemic-toxicity-nanocarriers-fabricated-from-heparin-mpeg-and-pamam-dendrimers-for-controlled-drug-release
#5
Vu Minh Thanh, Thi Hiep Nguyen, Tuong Vi Tran, Uyen-Thi Phan Ngoc, Minh Nhat Ho, Thi Thinh Nguyen, Yen Nguyen Tram Chau, Van Thu Le, Ngoc Quyen Tran, Cuu Khoa Nguyen, Dai Hai Nguyen
In this report, poly(amide amine) (PAMAM) dendrimer and Heparin-grafted-monomethoxy polyethylene glycol (HEP-mPEG) were synthesized and characterized. In aqueous solution, the generation 4 PAMAM dendrimers (G4.0-PAMAM) existed as nanoparticles with particle size of 5.63nm. However, after electrostatic complexation with HEP-mPEG to form a core@shell structure G4.0-PAMAM@HEP-mPEG, the size of nanoparticles was significantly increased (73.82nm). The G4.0-PAMAM@HEP-mPEG nanoparticles showed their ability to effectively encapsulate doxorubicin (DOX) for prolonged and controlled release...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28957734/simplified-conditions-for-storing-and-cryopreservation-of-dental-pulp-stem-cells
#6
Nam Cong-Nhat Huynh, Son Hoang Le, Vu Nguyen Doan, Lan Thi Quynh Ngo, Ha Le Bao Tran
OBJECTIVES: This study aimed to simplify the collection, isolation and cryopreservation procedure of human dental pulp stem cells (DPSCs) to ease the establishment of dental stem cell banking. DESIGN: Extracted third molars were collected and stored either in growth medium or in gentamicin-saline (480μg/ml) for 6, 9 or 12h. DPSCs were isolated and subjected to cryopreservation by a controlled-rate or rapid freezing method in 5 or 10% DMSO. Flow cytometry and growth pattern of DPSCs before and after cryopreservation were conducted...
September 7, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28957024/sparse-covariance-matrix-estimation-by-dca-based-algorithms
#7
Duy Nhat Phan, Hoai An Le Thi, Tao Pham Dinh
This letter proposes a novel approach using the [Formula: see text]-norm regularization for the sparse covariance matrix estimation (SCME) problem. The objective function of SCME problem is composed of a nonconvex part and the [Formula: see text] term, which is discontinuous and difficult to tackle. Appropriate DC (difference of convex functions) approximations of [Formula: see text]-norm are used that result in approximation SCME problems that are still nonconvex. DC programming and DCA (DC algorithm), powerful tools in nonconvex programming framework, are investigated...
November 2017: Neural Computation
https://www.readbyqxmd.com/read/28947669/operationalisation-and-validation-of-the-stopping-elderly-accidents-deaths-and-injuries-steadi-fall-risk-algorithm-in-a-nationally-representative-sample
#8
Matthew C Lohman, Rebecca S Crow, Peter R DiMilia, Emily J Nicklett, Martha L Bruce, John A Batsis
BACKGROUND: Preventing falls and fall-related injuries among older adults is a public health priority. The Stopping Elderly Accidents, Deaths, and Injuries (STEADI) tool was developed to promote fall risk screening and encourage coordination between clinical and community-based fall prevention resources; however, little is known about the tool's predictive validity or adaptability to survey data. METHODS: Data from five annual rounds (2011-2015) of the National Health and Aging Trends Study (NHATS), a representative cohort of adults age 65 years and older in the USA...
September 25, 2017: Journal of Epidemiology and Community Health
https://www.readbyqxmd.com/read/28906146/new-cerebroside-and-chondrocyte-proliferation-activity-of-caryota-mitis-l
#9
Pham Thi Nhat Trinh, Nguyen Thi To Quynh, Mai Dinh Tri, Phan Nhat Minh, Nguyen Thi Le Thuy, Luu Hong Truong, Nguyen Ngoc Tuan, Le Tien Dung
Caryota mitis L., a flowering plant, belongs to the family Arecaceae. In Vietnam, its fruits were used to treat joint pain. The present study was designed to investigate the phytochemicals and chondrocyte proliferation activity of C. mitis L. fruits on young human chondrocyte. The results showed that all of extracts (crude extract as well as n-hexane, chloroform, ethyl acetate and methanol fractions) were stimulated the growth of chondrocyte at 0.1 μg/mL; 0.01 μg/mL concentrations, of which the n-hexane and methanol fractions significantly increased the proliferation of chondrocyte by 30...
September 14, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28890504/an-alarmingly-high-proportion-of-anti-retroviral-drugs-resistant-hiv-1-infection-among-high-risk-groups-in-central-vietnam-a-sub-study-of-the-national-sentinel-survey
#10
Hung Thai Do, Dong Thanh Nguyen, Lan Anh Thi Nguyen, Duong Huy Do, Huy Xuan Le, Xuan Mai Thi Trinh, Hong Vy Nu Ton, Ikumi Sawada, Noriko Kitamura, Nhat Minh Le, Keisuke Yoshihara, Thu Huong Thi Phan, Chien Trong Bui, Koya Ariyoshi, Lay Myint Yoshida
We investigated the prevalence of HIV drug resistance among high risk groups such as injecting drug user (IDU), female sex worker (FSW) and men having sex with men (MSM) in central Vietnam. We used HIV positive samples from 2012-2013 sentinel surveillance surveys. Study subjects were screened for HIV infection by standardized screening assays and the positive samples were further tested for HIV viral load and drug resistant mutations by in-house assays. Drug resistant mutations (DRMs) were determined using the Stanford University online sequence analysis tool...
September 11, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28856178/histone-deacetylases-and-their-roles-in-mineralized-tissue-regeneration
#11
REVIEW
Nam Cong-Nhat Huynh, Vincent Everts, Ruchanee Salingcarnboriboon Ampornaramveth
Histone acetylation is an important epigenetic mechanism that controls expression of certain genes. It includes non-sequence-based changes of chromosomal regional structure that can alter the expression of genes. Acetylation of histones is controlled by the activity of two groups of enzymes: the histone acetyltransferases (HATs) and histone deacetylases (HDACs). HDACs remove acetyl groups from the histone tail, which alters its charge and thus promotes compaction of DNA in the nucleosome. HDACs render the chromatin structure into a more compact form of heterochromatin, which makes the genes inaccessible for transcription...
December 2017: Bone Reports
https://www.readbyqxmd.com/read/28817745/association-of-vision-loss-with-cognition-in-older-adults
#12
Stephanie P Chen, Jay Bhattacharya, Suzann Pershing
Importance: Visual dysfunction and poor cognition are highly prevalent among older adults; however, the relationship is not well defined. Objective: To evaluate the association of measured and self-reported visual impairment (VI) with cognition in older US adults. Design, Setting, and Participants: Cross-sectional analysis of 2 national data sets: the National Health and Nutrition Examination Survey (NHANES), 1999-2002, and the National Health and Aging Trends Study (NHATS), 2011-2015...
September 1, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28729702/structure-of-general-population-antibody-titer-distributions-to-influenza-a-virus
#13
Nguyen Thi Duy Nhat, Stacy Todd, Erwin de Bruin, Tran Thi Nhu Thao, Nguyen Ha Thao Vy, Tran Minh Quan, Dao Nguyen Vinh, Janko van Beek, Pham Hong Anh, Ha Minh Lam, Nguyen Thanh Hung, Nguyen Thi Le Thanh, Huynh Le Anh Huy, Vo Thi Hong Ha, Stephen Baker, Guy E Thwaites, Nguyen Thi Nam Lien, Tran Thi Kim Hong, Jeremy Farrar, Cameron P Simmons, Nguyen Van Vinh Chau, Marion Koopmans, Maciej F Boni
Seroepidemiological studies aim to understand population-level exposure and immunity to infectious diseases. Their results are normally presented as binary outcomes describing the presence or absence of pathogen-specific antibody, despite the fact that many assays measure continuous quantities. A population's natural distribution of antibody titers to an endemic infectious disease may include information on multiple serological states - naiveté, recent infection, non-recent infection, childhood infection - depending on the disease in question and the acquisition and waning patterns of immunity...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28707052/steered-molecular-dynamics-for-investigating-the-interactions-between-insulin-receptor-tyrosine-kinase-irk-and-variants-of-protein-tyrosine-phosphatase-1b-ptp1b
#14
Hung Nguyen, Nhat Do, Tuyn Phan, Tri Pham
The aim of this study is to use steered molecular dynamics to investigate the dissociation process between IRK and PTP1Bs for wild type and five mutants (consisting of p.D181E, p.D181A, p.Q262A, p.D181A-Y46F, and p.D181A-Q262A). The gained results are observed not only the unbinding mechanism of IRK-PTP1B complexes came from pulling force profile, number of hydrogen bonds, and interaction energy between IRK and PTP1Bs but also described PTP1B's point mutations could variably change its binding affinity towards IRK...
July 13, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28702349/distinct-multivariate-brain-morphological-patterns-and-their-added-predictive-value-with-cognitive-and-polygenic-risk-scores-in-mental-disorders
#15
Nhat Trung Doan, Tobias Kaufmann, Francesco Bettella, Kjetil Nordbø Jørgensen, Christine Lycke Brandt, Torgeir Moberget, Dag Alnæs, Gwenaëlle Douaud, Eugene Duff, Srdjan Djurovic, Ingrid Melle, Torill Ueland, Ingrid Agartz, Ole A Andreassen, Lars T Westlye
The brain underpinnings of schizophrenia and bipolar disorders are multidimensional, reflecting complex pathological processes and causal pathways, requiring multivariate techniques to disentangle. Furthermore, little is known about the complementary clinical value of brain structural phenotypes when combined with data on cognitive performance and genetic risk. Using data-driven fusion of cortical thickness, surface area, and gray matter density maps (GMD), we found six biologically meaningful patterns showing strong group effects, including four statistically independent multimodal patterns reflecting co-occurring alterations in thickness and GMD in patients, over and above two other independent patterns of widespread thickness and area reduction...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28674955/herbicide-zn-al-layered-double-hydroxide-hybrid-composite-synthesis-and-slow-controlled-release-properties
#16
Nguyen Thi Kim Phuong, Ho Nguyen Nhat Ha, Nguyen Thi Phuong Dieu, Bui The Huy
The herbicide glyphosate (GLY) or 2,4-dichlorophenoxyacetic acids (2,4D) was intercalated in the interlayer region of a Zn-Al-layered double hydroxide (LDH) to obtain LDH-GLY or the LDH-2,4D hybrid composite because of its controlled release. Compared to the physically mixed herbicides, the LDH-herbicide hybrid composite displayed slow-release properties in decarbonated distilled water. The release rate of herbicides was found to be dependent on the carbonate and chloride anion concentrations in solution. The time at which 50% of the herbicides were released from the hybrid composite into solution, t 50, ranged from 6...
July 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28666881/distinguishing-early-and-late-brain-aging-from-the-alzheimer-s-disease-spectrum-consistent-morphological-patterns-across-independent-samples
#17
Nhat Trung Doan, Andreas Engvig, Krystal Zaske, Karin Persson, Martina Jonette Lund, Tobias Kaufmann, Aldo Cordova-Palomera, Dag Alnæs, Torgeir Moberget, Anne Brækhus, Maria Lage Barca, Jan Egil Nordvik, Knut Engedal, Ingrid Agartz, Geir Selbæk, Ole A Andreassen, Lars T Westlye
Alzheimer's disease (AD) is a debilitating age-related neurodegenerative disorder. Accurate identification of individuals at risk is complicated as AD shares cognitive and brain features with aging. We applied linked independent component analysis (LICA) on three complementary measures of gray matter structure: cortical thickness, area and gray matter density of 137 AD, 78 mild (MCI) and 38 subjective cognitive impairment patients, and 355 healthy adults aged 18-78 years to identify dissociable multivariate morphological patterns sensitive to age and diagnosis...
June 27, 2017: NeuroImage
https://www.readbyqxmd.com/read/28654181/photoelectrochemical-h2-generation-from-suboxide-tio2-nanotubes-visible-light-absorption-versus-conductivity
#18
Shiva Mohajernia, Seyedsina Hejazi, Anca Mazare, Nhat Truong Nguyen, Patrik Schmuki
In the present work we report on the key factors dictating the photoelectrochemical (PEC) performance of suboxide titania (TiOx ) nanotubes. TiOx nanotubes were produced by a systematic variation of reduction heat treatments of TiO2 in Ar/H2 . The properties of the TiOx tubes were investigated by electron paramagnetic resonance (EPR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), solid-state conductivity, reflectivity measurements, photocurrent spectroscopy, and photoelectrochemical hydrogen evolution...
June 27, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28644408/isolation-and-selection-of-microalgal-strains-from-natural-water-sources-in-viet-nam-with-potential-for-edible-oil-production
#19
Tran Yen Thao, Dinh Thi Nhat Linh, Vo Chi Si, Taylor W Carter, Russell T Hill
Industrial vegetable oil production in Viet Nam depends on oil seeds and crude plant oils that are currently more than 90% imported. As the first step in investigating the feasibility of using microalgae to provide Viet Nam with a domestic source of oil for food and edible oil industries, fifty lipid-producing microalgae were isolated and characterized. The microalgae were isolated from water sources ranging from freshwater to brackish and marine waters from a wide geographic distribution in Viet Nam. Initial analyses showed that 20 of the 50 strains had good growth rates, produced high biomass and had high lipid content, ranging up to 50% of dry weight biomass...
June 23, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28615658/serotyping-dengue-virus-with-isothermal-amplification-and-a-portable-sequencer
#20
Junya Yamagishi, Lucky R Runtuwene, Kyoko Hayashida, Arthur E Mongan, Lan Anh Nguyen Thi, Linh Nguyen Thuy, Cam Nguyen Nhat, Kriengsak Limkittikul, Chukiat Sirivichayakul, Nuankanya Sathirapongsasuti, Martin Frith, Wojciech Makalowski, Yuki Eshita, Sumio Sugano, Yutaka Suzuki
The recent development of a nanopore-type portable DNA sequencer has changed the way we think about DNA sequencing. We can perform sequencing directly in the field, where we collect the samples. Here, we report the development of a novel method to detect and genotype tropical disease pathogens, using dengue fever as a model. By combining the sequencer with isothermal amplification that only requires a water bath, we were able to amplify and sequence target viral genomes with ease. Starting from a serum sample, the entire procedure could be finished in a single day...
June 14, 2017: Scientific Reports
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