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Bin Tang, Yanmei Huang, Hongqin Yang, Peixiao Tang, Hui Li
As a natural dietary polyphenol, 3,4,5-tri-O-caffeoylquinic acid (3,4,5-triCQA) exhibits numerous stronger pharmacological activities than that of its analogues. Studies on interaction between 3,4,5-triCQA and protein are very helpful for understanding the mechanism of these enhanced biological functions. In this study, (1)H saturation transfer difference NMR ((1)H STD-NMR) combined with multi-spectroscopy were used to probe the interaction of 3,4,5-triCQA with human serum albumin (HSA). Both qualitative and quantitative (1)H STD-NMR indicated that 3,4,5-triCQA can specifically bind to HSA at the favored Sudlow's site II with caffeoyl groups as the main recognizable moiety...
October 17, 2016: Journal of Photochemistry and Photobiology. B, Biology
Songyuan Tang, Weiming Tang, Kathrine Meyers, Polin Chan, Zhongdan Chen, Joseph D Tucker
BACKGROUND: Despite global efforts to control HIV among key populations, new infections among men who have sex with men (MSM) and transgender (TG) individuals are still increasing. The increasing HIV epidemic among MSM/TG in China indicates that more effective services are urgently needed. However, policymakers and program managers must have a clear understanding of MSM/TG sexual health in China to improve service delivery. To meet this need, we undertook a scoping review to summarize HIV epidemiology and responses among MSM and TG individuals in China...
October 20, 2016: BMC Infectious Diseases
Xiongwen Zheng, Xianshu Wang, Xia Cai, Lidan Xing, Mengqing Xu, Youhao Liao, Xiaoping Li, Weishan Li
Phenyl vinyl sulfone (PVS) as a novel electrolyte additive is used to construct a protective interface film on layered lithium-rich cathode. Charge-discharge cycling demonstrates that the capacity retention of Li(Li0.2Mn0.54Ni0.13Co0.13)O2 after 240 cycles at 0.5 C between 2.0 and 4.8 V (vs. Li/Li(+)) reaches about 80 % by adding 1 wt. % PVS into a standard (STD) electrolyte, 1.0 M LiPF6 in EC/EMC/DEC (3/5/2 in weight). This excellent performance is attributed to the special molecular structure of PVS, compared to the additives that have been reported in literature...
October 18, 2016: ACS Applied Materials & Interfaces
Jian-Fang Zhou, Wu-Jie Yuan, Zhao Zhou
Microsaccades are involuntary and very small eye movements during fixation. Recently, the microsaccade-related neural dynamics have been extensively investigated both in experiments and by constructing neural network models. Experimentally, microsaccades also exhibit many behavioral properties. It's well known that the behavior properties imply the underlying neural dynamical mechanisms, and so are determined by neural dynamics. The behavioral properties resulted from neural responses to microsaccades, however, are not yet understood and are rarely studied theoretically...
October 14, 2016: Scientific Reports
Karen Vignale, Justina V Caldas, Judy A England, Nirun Boonsinchai, Phiphob Sodsee, Monticha Putsakum, Erik D Pollock, Sami Dridi, Craig N Coon
A study was conducted to evaluate the effect of four different feeding regimens on breast muscle protein turnover in broiler breeder Cobb-500 parent stock (PS) pullets and breeder hens. The four feeding regimens based on BW curves utilized for the study were as follows: Everyday feeding (STD-ED) (Cobb Standard BW curve), skip-a-day feeding (STD-SKIP) (Cobb Standard BW curve), lighter BW (LBW-SKIP) (BW curve 20% under), and heavier BW (HBW-SKIP) (BW curve 20% over). Each feeding regimen was provided to pullets from 4 wk to 21 wk of age...
October 12, 2016: Poultry Science
Eunice Molinar-Toribio, Elisabet Fuguet, Sara Ramos-Romero, Núria Taltavull, Lucía Méndez, M Rosa Nogués, Isabel Medina, Josep Lluís Torres, Jara Pérez-Jiménez
PURPOSE: Polyphenol metabolites are key mediators of the biological activities of polyphenols. This study aimed to evaluate the long-term effects of a high-fat high-sucrose (HFHS) diet on the metabolism of proanthocyanidins from grape seed extract (GSE). METHODS: Adult female Wistar-Kyoto rats were fed a standard (STD) or HFHS diet supplemented or not with GSE for 16 weeks. PA metabolites were determined by targeted HPLC-MS/MS analysis. RESULTS: A lower concentration of total microbial-derived PA metabolites was present in urine and the aqueous fraction of faeces in the HFHS + GSE group than in the STD + GSE group...
October 12, 2016: European Journal of Nutrition
Aladdin Shadyab, Kenrad E Nelson, Ram Rangsin
The human immunodeficiency virus (HIV) epidemic in Thailand was first recognized in 1988 among injection drug users (IDUs) in Bangkok. Soon thereafter, HIV infections were reported among female sex workers (FSWs) and men attending sexually transmitted disease (STD) clinics. Routine serological surveillance for HIV began in 1991 among young men who were conscripted annually into the Royal Thai Army (RTA). The data from these populations provided a national population-based sample to determine sexual behaviors and HIV prevalence among sexually active young men...
October 6, 2016: Current HIV Research
Laura Widman, Carol E Golin, Seth M Noar, Joy Massey, Mitchell J Prinstein
This article describes the development of , an interactive web-based program designed to improve sexual communication skills and reduce the risk of HIV/STDs among adolescent girls, a population at heightened risk for negative sexual health outcomes (Centers for Disease Control and Prevention, 2013). Although sexual communication is a critical predictor of safer sex among teens, there are few online interventions that target these skills as a central program component. We developed ProjectHeartforGirls...
October 2016: AIDS Education and Prevention: Official Publication of the International Society for AIDS Education
Mahbubur Rahman, Jacqueline M Hirth, Abbey B Berenson
The objective of this study was to examine correlates of human papillomavirus (HPV) vaccine use according to Advisory Committee on Immunization Practices (ACIP)'s recommendations among US adolescent girls. We used National Immunization Survey of Teens 2013 data. Based on provider-verified (n = 9403) information, 57.3, 39.1 and 19.0 % of adolescent girls, initiated, completed and completed the HPV vaccine according to ACIP's recommendation (by age 12), respectively. Hispanic race/ethnicity, a physician recommendation for HPV vaccine and ≥1 influenza vaccine in the past 3 years were all associated with a higher likelihood of compliance with ACIP's recommendation...
October 4, 2016: Journal of Community Health
Patrícia de Brum Vieira, Tiana Tasca, W Evan Secor
Trichomoniasis is a sexually transmitted disease (STD) caused by infection with the protozoan parasite Trichomonas vaginalis. It is considered the most prevalent non-viral sexually transmitted disease worldwide. Recently, the infection has been associated with adverse outcomes of pregnancy and increased risks of HIV acquisition and transmission, besides the association with cervical and prostate cancers. The consequences of trichomoniasis are likely much greater than previously recognized, both at the individual and the community level...
September 30, 2016: Current Topics in Medicinal Chemistry
Hannah L Radabaugh, Lauren J Carlson, Darik A O'Neil, Megan J LaPorte, Christina M Monaco, Jeffrey P Cheng, Patricia B de la Tremblaye, Naima Lajud, Corina O Bondi, Anthony E Kline
Environmental enrichment (EE) promotes behavioral recovery after experimental traumatic brain injury (TBI). However, the chronic rehabilitation provided in the laboratory is not analogous to the clinic where physiotherapy is typically limited. Moreover, females make up approximately 40% of the clinical TBI population, yet they are seldom studied in brain trauma. Hence, the goal of this study was to test the hypothesis that abbreviated EE would confer neurobehavioral, cognitive, and histological benefits in brain injured female rats...
September 28, 2016: Experimental Neurology
Dariana Pimentel Gomes Hübner, Patrícia de Brum Vieira, Amanda Piccoli Frasson, Camila Braz Menezes, Franciane Rios Senger, Gloria Narjara Santos da Silva, Simone Cristina Baggio Gnoatto, Tiana Tasca
Caused by Trichomonas vaginalis, trichomoniasis is the most common non-viral STD worldwide. Currently, metronidazole and tinidazole are the only drugs approved for treatment of the condition. However, problems such as metronidazole-resistant T. vaginalis isolates and allergic reactions have been reported. Based on data previously published by our group, structural changes in betulinic acid (1) were performed, generating three new compounds that were tested for in vitro anti-T.vaginalis activity in this study...
September 26, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Jesse L Clark, Amaya G Perez-Brumer, Eddy R Segura, Hector J Salvatierra, Jorge Sanchez, Javier R Lama
BACKGROUND: New strategies to support partner notification (PN) are critical for STD control and require detailed understanding of how specific individual and partnership characteristics guide notification decisions. METHODS: From 2011 to 2012, 397 MSM and TW recently diagnosed with HIV, syphilis, or another STD completed a survey on anticipated notification of recent sexual partners and associated factors. Qualitative interviews were conducted with a subset of participants to provide further depth to quantitative findings...
2016: PloS One
Yuanyuan Mi, Xiaohan Lin, Si Wu
Neural systems display rich short-term dynamics at various levels, e.g., spike-frequency adaptation (SFA) at the single-neuron level, and short-term facilitation (STF) and depression (STD) at the synapse level. These dynamical features typically cover a broad range of time scales and exhibit large diversity in different brain regions. It remains unclear what is the computational benefit for the brain to have such variability in short-term dynamics. In this study, we propose that the brain can exploit such dynamical features to implement multiple seemingly contradictory computations in a single neural circuit...
2016: Frontiers in Computational Neuroscience
M Ibars, A Ardid-Ruiz, M Suárez, B Muguerza, C Bladé, G Aragonès
OBJECTIVE: Dietary obesity is usually linked with hypothalamic leptin resistance, in which the primary impact is an interference in the homeostatic control of body weight and appetite. Notably, proanthocyanidins (PACs), which are the most abundant phenolic compounds present in human diet, modulate adiposity and food intake. The aim of this study was to assess whether PACs could re-establish appropriate leptin signalling in both the hypothalamus and peripheral tissues. DESIGN: Male Wistar rats were fed either a standard chow diet (STD group, n=7) or a cafeteria diet (CD) for 13 weeks...
October 18, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Preeti Pathela, Kelly Jamison, Vikki Papadouka, Rezaul Kabir, Lauri E Markowitz, Eileen F Dunne, Julia A Schillinger
PURPOSE: Human papillomavirus (HPV) vaccine is recommended for adolescents. By the end of 2013, 64% of female and 40% of male New York City residents aged 13-18 years had received ≥1 HPV vaccine dose. Adolescents attending sexually transmitted disease (STD) clinics are at high risk for HPV exposure and could benefit from vaccination. Our objective was to estimate HPV vaccination coverage for this population. METHODS: We matched records of New York City's STD clinic patients aged 13-18 years during 2010-2013 with the Citywide Immunization Registry...
September 23, 2016: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
Juliana C Barreiro, Márcio W Paixão, Tiago C Lourenço, Quezia B Cass, Tiago Venâncio
This paper reports the investigation of the chiral interaction between 3,4-methylenedioxy-methamphetamine (MDMA) enantiomers and an immobilized polysaccharide-based chiral phase. For that, suspended-state high-resolution magic angle spinning nuclear magnetic resonance spectroscopy (1H HR-MAS NMR) was used. 1H HR-MAS longitudinal relaxation time and Saturation Transfer Difference (STD NMR) titration experiments were carried out yielding information at the molecular level of the transient diastereoisomeric complexes of MDMA enantiomers and the chiral stationary phase...
2016: PloS One
Yue Guan, Weifeng Li, Zhuoran Jiang, Ying Chen, Song Liu, Jian He, Zhengyang Zhou, Yun Ge
RATIONALE AND OBJECTIVES: This study aimed to develop whole-lesion apparent diffusion coefficient (ADC)-based entropy-related parameters of cervical cancer to preliminarily assess intratumoral heterogeneity of this lesion in comparison to adjacent normal cervical tissues. MATERIALS AND METHODS: A total of 51 women (mean age, 49 years) with cervical cancers confirmed by biopsy underwent 3-T pelvic diffusion-weighted magnetic resonance imaging with b values of 0 and 800 s/mm(2) prospectively...
September 21, 2016: Academic Radiology
Shengju Li, Lucky Ahmed, Ruina Zhang, Yi Pan, Hiroaki Matsunami, Jessica L Burger, Eric Block, Victor S Batista, Hanyi Zhuang
Mammalian survival depends on ultrasensitive olfactory detection of volatile sulfur compounds, since these compounds can signal the presence of rancid food, O2 depleted atmospheres, and predators (through carnivore excretions). Skunks exploit this sensitivity with their noxious spray. In commerce, natural and liquefied gases are odorized with t-BuSH and EtSH, respectively, as warnings. The 100-million-fold difference in olfactory perception between structurally similar EtSH and EtOH has long puzzled those studying olfaction...
October 3, 2016: Journal of the American Chemical Society
R J Johnson, C L Kerr, S S Enouri, P Modi, B D X Lascelles, J R E Del Castillo
We investigated the effects of liposome encapsulation at prolonging the systemic exposure of buprenorphine following subcutaneous administration in cats. Seven healthy male cats were dosed intravenously with 0.02 mg/kg buprenorphine solution (STD-BUP), followed 14 days later by a subcutaneous injection of 0.2 mg/kg buprenorphine as a liposomal suspension (SUS-BUP) containing drug molecules both in liposomes and the suspending vehicle. Buprenorphine time plasma concentration data for both dosing routes were analyzed simultaneously with four compartmental models...
September 20, 2016: Journal of Veterinary Pharmacology and Therapeutics
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