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https://www.readbyqxmd.com/read/28431242/structural-and-functional-analysis-of-a-%C3%AE-2-adrenergic-receptor-complex-with-grk5
#1
Konstantin E Komolov, Yang Du, Nguyen Minh Duc, Robin M Betz, João P G L M Rodrigues, Ryan D Leib, Dhabaleswar Patra, Georgios Skiniotis, Christopher M Adams, Ron O Dror, Ka Young Chung, Brian K Kobilka, Jeffrey L Benovic
The phosphorylation of agonist-occupied G-protein-coupled receptors (GPCRs) by GPCR kinases (GRKs) functions to turn off G-protein signaling and turn on arrestin-mediated signaling. While a structural understanding of GPCR/G-protein and GPCR/arrestin complexes has emerged in recent years, the molecular architecture of a GPCR/GRK complex remains poorly defined. We used a comprehensive integrated approach of cross-linking, hydrogen-deuterium exchange mass spectrometry (MS), electron microscopy, mutagenesis, molecular dynamics simulations, and computational docking to analyze GRK5 interaction with the β2-adrenergic receptor (β2AR)...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28413325/the-psychopharmacological-activities-of-vietnamese-ginseng-in-mice-characterization-of-its-psychomotor-sedative-hypnotic-antistress-anxiolytic-and-cognitive-effects
#2
Irene Joy I Dela Peña, Hee Jin Kim, Chrislean Jun Botanas, June Bryan de la Peña, Thi Hong Van Le, Minh Duc Nguyen, Jeong Hill Park, Jae Hoon Cheong
BACKGROUND: Panax vietnamensis Ha et Grushv. or Vietnamese ginseng (VG) is a recently discovered ginseng species. Studies on its chemical constituents have shown that VG is remarkably rich in ginseng saponins, particularly ocotillol saponins. However, the psychopharmacological effects of VG have not been characterized. Thus, in the present study we screened the psychopharmacological activities of VG in mice. METHODS: VG extract (VGE) was orally administered to mice at various dosages to evaluate its psychomotor (open-field and rota-rod tests), sedative-hypnotic (pentobarbital-induced sleeping test), antistress (cold swimming test), anxiolytic (elevated plus-maze test), and cognitive (Y-maze and passive-avoidance tests) effects...
April 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28412653/the-relationship-between-dioxins-exposure-and-risk-of-prostate-cancer-with-steroid-hormone-and-age-in-vietnamese-men
#3
Xian Liang Sun, Teruhiko Kido, Seijiro Honma, Eitetsu Koh, Rie Okamoto, Ho Dung Manh, Shoko Maruzeni, Muneko Nishijo, Hideaki Nakagawa, Takeshi Nakano, Takumi Takasuga, Dang Duc Nhu, Nguyen Ngoc Hung, Le Ke Son
Although Vietnam's massive herbicide exposure in 1960s and 1970s was clearly injurious to health, not all causal relationships have been clarified. We therefore explored associations among dioxins, steroid hormones, age and prostate cancer risk in men. We compared serum levels of dioxin, steroid hormones and prostate specific antigen (PSA) in men aged 56-81years from herbicide-exposed hotspots (n=50) with those from non-sprayed regions (n=48). Mean serum levels of dioxin congeners in the hotspot group were 1...
April 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28406248/sensory-defects-and-developmental-delay-among-children-with-congenital-rubella-syndrome
#4
Michiko Toizumi, Giang Thi Huong Nguyen, Hideki Motomura, Thanh Huu Nguyen, Enga Pham, Ken-Ichi Kaneko, Masafumi Uematsu, Hien Anh Thi Nguyen, Duc Anh Dang, Masahiro Hashizume, Lay-Myint Yoshida, Hiroyuki Moriuchi
This study investigated the features of developmental difficulties combined with sensory defects in children with congenital rubella syndrome (CRS). Following a large rubella outbreak in Khanh Hoa Province, Vietnam, in 2011, we enrolled 41 children with CRS from September 2011 through May 2013. Fourteen participants died and six became untraceable by October 2013; the remaining 21 children were followed up from 2013 to 2015. Thirteen and seven participants had hearing and functional ophthalmological impairment, respectively...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28404635/a-novel-mir-24-tcf1-axis-in-modulating-effector-t-cell-responses
#5
Sunglim Cho, Cheng-Jang Wu, Duc T Nguyen, Ling-Li Lin, Mei-Chi Chen, Aly Azeem Khan, Bi-Huei Yang, Wenxian Fu, Li-Fan Lu
miR-23∼27∼24 was recently implicated in restricting Th2 immunity, as well as the differentiation and function of other effector T cell lineages. Interestingly, miR-24, unlike other family members, actually promotes Th1 and Th17 responses. In this article, we show that miR-24 drives the production of IFN-γ and IL-17 in T cells at least in part through targeting TCF1, a transcription factor known for its role in limiting Th1 and Th17 immunity. Surprisingly, whereas TCF1 was previously shown to promote Th2 responses through inducing GATA3, enforced TCF1 expression in miR-24-overexpressing T cells led to further downregulation of IL-4 and GATA3 expression, suggesting miR-24-mediated inhibition of Th2 immunity cannot be attributed to TCF1 repression by miR-24...
April 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28404512/a-new-approach-for-concurrently-improving-performance-of-south-korean-food-waste-valorization-and-renewable-energy-recovery-via-dry-anaerobic-digestion-under-mesophilic-and-thermophilic-conditions
#6
Dinh Duc Nguyen, Jeong Seong Yeop, Jaehoon Choi, Sungsu Kim, Soon Woong Chang, Byong-Hun Jeon, Wenshan Guo, Huu Hao Ngo
Dry semicontinuous anaerobic digestion (AD) of South Korean food waste (FW) under four solid loading rates (SLRs) (2.30-9.21kg total solids (TS)/m(3)day) and at a fixed TS content was compared between two digesters, one each under mesophilic and thermophilic conditions. Biogas production and organic matter reduction in both digesters followed similar trends, increasing with rising SLR. Inhibitor (intermediate products of the anaerobic fermentation process) effects on the digesters' performance were not observed under the studied conditions...
April 9, 2017: Waste Management
https://www.readbyqxmd.com/read/28401961/development-and-validation-of-a-prognostic-model-for-predicting-30-day-mortality-risk-in-medical-patients-in-emergency-department-ed
#7
Duc T Ha, Tam Q Dang, Ngoc V Tran, Thao N T Pham, Nguyen D Nguyen, Tuan V Nguyen
The primary aim of this prospective study is to develop and validate a new prognostic model for predicting the risk of mortality in Emergency Department (ED) patients. The study involved 1765 patients in the development cohort and 1728 in the validation cohort. The main outcome was mortality up to 30 days after admission. Potential risk factors included clinical characteristics, vital signs, and routine haematological and biochemistry tests. The Bayesian Model Averaging method within the Cox's regression model was used to identify independent risk factors for mortality...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28376260/cdc42-regulates-branching-in-angiogenic-sprouting-in-vitro
#8
Duc-Huy T Nguyen, Lin Gao, Alec Wong, Christopher S Chen
OBJECTIVES: The morphogenetic events that occur during angiogenic sprouting involve several members of the Rho family of GTPases, including Cdc42. However, the precise roles of Cdc42 in angiogenic sprouting have been difficult to elucidate owing to the lack of models to study these events in vitro. Here, we aim to identify the roles of Cdc42 in branching morphogenesis in angiogenesis. METHODS: Using a 3D biomimetic model of angiogenesis in vitro, where endothelial cells were seeded inside a cylindrical channel within collagen gel and sprouted from the channel in response to a defined biochemical gradient of angiogenic factors, we inhibited Cdc42 activity with a small molecule inhibitor ML141 and examined the effects of Cdc42 on the morphogenetic processes of angiogenic sprouting...
April 4, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28370432/antigenic-diversity-of-h5-highly-pathogenic-avian-influenza-viruses-of-clade-2-3-4-4-isolated-in-asia
#9
Ayako Ohkawara, Masatoshi Okamatsu, Makoto Ozawa, Duc-Huy Chu, Lam Thanh Nguyen, Takahiro Hiono, Keita Matsuno, Hiroshi Kida, Yoshihiro Sakoda
H5 highly pathogenic avian influenza viruses (HPAIVs) have spread in both poultry and wild birds since the late 2003. The continued circulation of HPAIVs in poultry in several regions of the world has led to antigenic drift. In this study, we analyzed the antigenic properties of H5 HPAIVs isolated in Asia using four neutralizing monoclonal antibodies (MAbs) recognizing the hemagglutinin, which were established using A/chicken/Kumamoto/1-7/2014 (H5N8), belonging to clade 2.3.4.4 and also using polyclonal antibodies...
March 30, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28367882/severe-acute-respiratory-infection-sari-surveillance-for-hospitalized-patients-in-northern-vietnam-2011-2014
#10
Hang Khanh Le Nguyen, Son Vu Nguyen, Anh Phuong Nguyen, Phuong Mai Vu Hoang, Thanh Thi Le, Thach Co Nguyen, Huong Thu Hoang, Cuong Duc Vuong, Loan Thi Thanh Tran, Le Quynh Mai
Worldwide Severe Acute Respiratory Infections (SARI) are leading causes of hospitalization, morbidity and mortality in children. The aim of this study was to identify viral pathogens responsible for SARI in northern Vietnam from 2011 to 2014. METHODS: Throat swabs and tracheal aspirates were collected from SARI patients according to WHO Guidelines. Thirteen different viral pathogens (Influenza A(H1N)pdm09; A/H3N2; A/H5; A/H7 and B; Para influenza 1,2,3; RSV; HMPV; Adeno; SARS-CoV and Rhino) were tested by conventional/ real-time RT-PCR...
March 28, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28361961/exposure-to-paternal-tobacco-smoking-increased-child-hospitalization-for-lower-respiratory-infections-but-not-for-other-diseases-in-vietnam
#11
Reiko Miyahara, Kensuke Takahashi, Nguyen Thi Hien Anh, Vu Dinh Thiem, Motoi Suzuki, Hiroshi Yoshino, Le Huu Tho, Hiroyuki Moriuchi, Sharon E Cox, Lay Myint Yoshida, Dang Duc Anh, Koya Ariyoshi, Michio Yasunami
Exposure to environmental tobacco smoke (ETS) is an important modifiable risk factor for child hospitalization, although its contribution is not well documented in countries where ETS due to maternal tobacco smoking is negligible. We conducted a birth cohort study of 1999 neonates between May 2009 and May 2010 in Nha Trang, Vietnam, to evaluate paternal tobacco smoking as a risk factor for infectious and non-infectious diseases. Hospitalizations during a 24-month observation period were identified using hospital records...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28360939/techno-economic-assessment-of-hybrid-extraction-and-distillation-processes-for-furfural-production-from-lignocellulosic-biomass
#12
Le Cao Nhien, Nguyen Van Duc Long, Sangyong Kim, Moonyong Lee
BACKGROUND: Lignocellulosic biomass is one of the most promising alternatives for replacing mineral resources to overcome global warming, which has become the most important environmental issue in recent years. Furfural was listed by the National Renewable Energy Laboratory as one of the top 30 potential chemicals arising from biomass. However, the current production of furfural is energy intensive and uses inefficient technology. Thus, a hybrid purification process that combines extraction and distillation to produce furfural from lignocellulosic biomass was considered and investigated in detail to improve the process efficiency...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28332438/quantitative-structure-activity-relationship-analysis-and-virtual-screening-studies-for-identifying-hdac2-inhibitors-from-known-hdac-bioactive-chemical-libraries
#13
H Pham-The, G Casañola-Martin, K Diéguez-Santana, N Nguyen-Hai, N T Ngoc, L Vu-Duc, H Le-Thi-Thu
Histone deacetylases (HDAC) are emerging as promising targets in cancer, neuronal diseases and immune disorders. Computational modelling approaches have been widely applied for the virtual screening and rational design of novel HDAC inhibitors. In this study, different machine learning (ML) techniques were applied for the development of models that accurately discriminate HDAC2 inhibitors form non-inhibitors. The obtained models showed encouraging results, with the global accuracy in the external set ranging from 0...
March 2017: SAR and QSAR in Environmental Research
https://www.readbyqxmd.com/read/28330156/effect-of-salicylic-acid-on-expression-level-of-genes-related-with-isoprenoid-pathway-in-centella-centella-asiatica-l-urban-cells
#14
Nguyen Hoang Loc, Nguyen Thanh Giang, Nguyen Duc Huy
In this study, we report the expression level of CaSQS, CabAS and CaCYS, the genes involved in phytosterol and triterpene metabolic pathway of centella (Centella asiatica (L.) Urban), in cells elicited with salicylic acid (50-200 µM). Reverse transcription-polymerase chain reaction (RT-PCR) and Northern blot analysis indicated CaSQS, CabAS, and CaCYS genes expressed in both the wild-type and cultured cells (with and without elicitation). In elicited cells, expressions of CaSQS, CabAS, and CaCYS genes showed strong dependence on salicylic acid concentration and elicitation day...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28320341/seasonal-patterns-of-dengue-fever-and-associated-climate-factors-in-4-provinces-in-vietnam-from-1994-to-2013
#15
Hu Suk Lee, Hung Nguyen-Viet, Vu Sinh Nam, Mihye Lee, Sungho Won, Phuc Pham Duc, Delia Grace
BACKGROUND: In Vietnam, dengue fever (DF) is still a leading cause of hospitalization. The main objective of this study was to evaluate the seasonality and association with climate factors (temperature and precipitation) on the incidences of DF in four provinces where the highest incidence rates were observed from 1994 to 2013 in Vietnam. METHODS: Incidence rates (per 100,000) were calculated on a monthly basis from during the study period. The seasonal-decomposition procedure based on loess (STL) was used in order to assess the trend and seasonality of DF...
March 20, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28302582/characterization-of-pegylated-and-non-pegylated-liposomal-formulation-for-the-delivery-of-hypoxia-activated-vinblastine-n-oxide-for-the-treatment-of-solid-tumors
#16
Vidhi M Shah, Duc X Nguyen, Adel Alfatease, Shay Bracha, Adam Wg Alani
Solid tumors often contain hypoxic regions which are resistant to standard chemotherapy and radiotherapy. We have developed a liposomal delivery system for a prodrug of vinblastine (CPD100) which converts to the parent compound only in the presence of lower oxygen levels. As a part of this work we have developed and optimized two formulations of CPD100: one composed of sphingomyelin/cholesterol (55/45; mol/mol) (CPD100Li) and the other composed of sphingomyelin/cholesterol/PEG (55/40/5; mol/mol) (CPD100 PEGLi)...
March 14, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28298536/pasteurization-procedures-for-donor-human-milk-affect-body-growth-intestinal-structure-and-resistance-against-bacterial-infections-in-preterm-pigs
#17
Yanqi Li, Duc Ninh Nguyen, Marita de Waard, Lars Christensen, Ping Zhou, Pingping Jiang, Jing Sun, Anders Miki Bojesen, Charlotte Lauridsen, Jens Lykkesfeldt, Trine Kastrup Dalsgaard, Stine Brandt Bering, Per Torp Sangild
Background: Holder pasteurization (HP) destroys multiple bioactive factors in donor human milk (DM), and UV-C irradiation (UVC) is potentially a gentler method for pasteurizing DM for preterm infants.Objective: We investigated whether UVC-treated DM improves gut maturation and resistance toward bacterial infections relative to HP-treated DM.Methods: Bacteria, selected bioactive components, and markers of antioxidant capacity were measured in unpasteurized donor milk (UP), HP-treated milk, and UVC-treated milk (all from the same DM pool)...
March 15, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28296244/-watchful-observation-follow-up-scheme-after-endoscopic-co2-laser-treatment-for-small-glottic-carcinomas-a-retrospective-study-of-93-cases
#18
Patrice Gallet, Cécile Rumeau, Duc Trung Nguyen, Pedro Augusto Teixeira, Cédric Baumann, Bruno Toussaint
OBJECTIVES: Evaluate the clinical outcome of patients treated with CO2-laser surgery for early-stage glottic carcinomas followed-up with 3 month laryngoscopy regardless of tumor grade and margins. DESIGN: Case series. SETTING: Retrospective review of the clinical records of patients treated at the ENT department of a tertiary university hospital. PARTICIPANTS AND METHOD: Clinical records from patients with early-stage glottic carcinomas (Tis-T2) treated with curative intent by CO2-laser surgery in a ten year period were evaluated...
March 10, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28281880/detection-of-antibiotics-in-chicken-eggs-obtained-from-supermarkets-in-ho-chi-minh-city-vietnam
#19
Takahiro Yamaguchi, Masahiro Okihashi, Kazuo Harada, Yoshimasa Konishi, Kotaro Uchida, Mai Hoang Ngoc Do, Long Thi Bui, Thinh Duc Nguyen, Ha Bich Phan, Huong Dang Thien Bui, Phuc Do Nguyen, Keiji Kajimura, Yuko Kumeda, Chinh Van Dang, Kazumasa Hirata, Yoshimasa Yamamoto
The residual levels of antibiotics in Vietnamese eggs were monitored from 2014 to 2015. A total of 111 egg packages, distributed by 11 different companies, were collected from supermarkets in Ho Chi Minh City and the levels of 28 antibiotics were analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS) screening method. Sixteen samples tested positive for antibiotics; a total of eight compounds (enrofloxacin, ciprofloxacin, norfloxacin, sulfadimethoxine, sulfamethazine, sulfamonomethoxine, tilmicosin and trimethoprim) were detected...
March 10, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28261823/effects-of-aging-on-cadmium-concentrations-and-renal-dysfunction-in-inhabitants-in-cadmium-polluted-regions-in-japan
#20
Hoang Duc Phuc, Teruhiko Kido, Nguyen Thi Phuong Oanh, Ho Dung Manh, Le Thai Anh, Yuko Oyama, Rie Okamoto, Akie Ichimori, Kazuhiro Nogawa, Yasushi Suwazono, Hideaki Nakagawa
The absorption of cadmium (Cd) may lead to Cd-related diseases such as renal tubular dysfunction and bone disease, and it is known to take around 10-30 years to reduce Cd concentrations to half their original levels. Urinary β2 -microglobulin (β2 -MG), N-acetyl-β-D-glucosaminidase (NAG), protein, glucose and albumin were used as indicators of renal dysfunction caused by Cd exposure. Our previous study found that urinary Cd concentrations had increased recently and that age was more strongly associated with urinary β2 -MG concentration than recent Cd body burden...
March 6, 2017: Journal of Applied Toxicology: JAT
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