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https://www.readbyqxmd.com/read/29342276/a-predictive-quantitative-model-of-spiking-activity-and-stimulus-secretion-coupling-in-oxytocin-neurons
#1
Jorge Maícas-Royo, Gareth Leng, Duncan J MacGregor
Oxytocin neurons of the rat hypothalamus project to the posterior pituitary where they secrete their products into the bloodstream. The pattern and quantity of that release depends on the afferent inputs to the neurons, on their intrinsic membrane properties, and on non-linear interactions between spiking activity and exocytosis: a given number of spikes will trigger more secretion when they arrive close together. Here we present a quantitative computational model of oxytocin neurons that can replicate the results of a wide variety of published experiments...
January 12, 2018: Endocrinology
https://www.readbyqxmd.com/read/29342259/false-starts-in-test-and-start-a-qualitative-study-of-reasons-for-delayed-antiretroviral-therapy-in-swaziland
#2
Christopher Pell, Eva Vernooij, Nelisiwe Masilela, Njabulo Simelane, Fortunate Shabalala, Ria Reis
Background: Test and start, antiretroviral therapy (ART) for all HIV-positive individuals, is a WHO-recommended treatment guideline. In Swaziland, test and start has been evaluated through the MaxART implementation study. This article examines why, in MaxART, some newly diagnosed HIV-positive clients delayed initiating ART. Methods: Thirteen HIV-positive clients who delayed ART for ≥90 d after testing were identified from the MaxART study database and interviewed...
January 12, 2018: International Health
https://www.readbyqxmd.com/read/29342237/the-roles-of-subdivisions-of-human-insula-in-emotion-perception-and-auditory-processing
#3
Yang Zhang, Wenjing Zhou, Siyu Wang, Qin Zhou, Haixiang Wang, Bingqing Zhang, Juan Huang, Bo Hong, Xiaoqin Wang
Previous studies have shown insular activations involving sensory, motor, and affective processing. However, the functional roles of subdivisions within the human insula are still not well understood. In the present study, we used intracranial electroencephalography and electrical cortical stimulation to investigate the causal roles of subdivisions of the insula in auditory emotion perception in epilepsy patients implanted with depth electrodes in this brain region. The posterior and the anterior subdivisions of the human insula, identified based on structural and functional analyses, showed distinct response properties to auditory emotional stimuli...
January 12, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29342138/%C3%AE-klotho-is-a-non-enzymatic-molecular-scaffold-for-fgf23-hormone-signalling
#4
Gaozhi Chen, Yang Liu, Regina Goetz, Lili Fu, Seetharaman Jayaraman, Ming-Chang Hu, Orson W Moe, Guang Liang, Xiaokun Li, Moosa Mohammadi
The ageing suppressor α-klotho binds to the fibroblast growth factor receptor (FGFR). This commits FGFR to respond to FGF23, a key hormone in the regulation of mineral ion and vitamin D homeostasis. The role and mechanism of this co-receptor are unknown. Here we present the atomic structure of a 1:1:1 ternary complex that consists of the shed extracellular domain of α-klotho, the FGFR1c ligand-binding domain, and FGF23. In this complex, α-klotho simultaneously tethers FGFR1c by its D3 domain and FGF23 by its C-terminal tail, thus implementing FGF23-FGFR1c proximity and conferring stability...
January 17, 2018: Nature
https://www.readbyqxmd.com/read/29342083/regulation-of-mitochondrial-dynamics-by-proteolytic-processing-and-protein-turnover
#5
REVIEW
Sumaira Ali, Gavin P McStay
The mitochondrial network is a dynamic organization within eukaryotic cells that participates in a variety of essential cellular processes, such as adenosine triphosphate (ATP) synthesis, central metabolism, apoptosis and inflammation. The mitochondrial network is balanced between rates of fusion and fission that respond to pathophysiologic signals to coordinate appropriate mitochondrial processes. Mitochondrial fusion and fission are regulated by proteins that either reside in or translocate to the inner or outer mitochondrial membranes or are soluble in the inter-membrane space...
January 17, 2018: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29342014/patterns-and-predictors-of-return-to-work-after-major-trauma-a-prospective-population-based-registry-study
#6
Alex Collie, Pamela M Simpson, Peter A Cameron, Shanthi Ameratunga, Jennie Ponsford, Ronan A Lyons, Sandra Braaf, Andrew Nunn, James E Harrison, Belinda J Gabbe
OBJECTIVE: To characterize patterns of engagement in work during the 4-year period after major traumatic injury, and to identify factors associated with those patterns. BACKGROUND: Employment is an important marker of functional recovery from injury. There are few population-based studies of long-term employment outcomes, and limited data on the patterns of return to work (RTW) after injury. METHODS: A population-based, prospective cohort study using the Victorian State Trauma Registry...
January 16, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29341945/lessons-about-causes-and-management-of-an-ebola-outbreak
#7
Aida Elargoubi, Anis W Belhaj Khelifa, Ons Haddad, Salma Mhalla, Nabil Sakly, Maha Mastouri
Ebola virus disease (EVD) is one of the deadliest viral diseases. It is characterized by a high mortality rate due to the lack of effective and safe treatments or vaccines and its ability to spread at an unstoppable pace. The West Africa outbreak ended but the disease may strike again at any time. The latest epidemic was, by far, the deadliest to date. The most concern was why this outbreak was so different from the previous ones. We proposed in this review firstly to summarize the principal causes of its unprecedented spread and secondly to identify the steps for an effective management approach of a future Ebola outbreak...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29341936/rheumatic-manifestations-among-cancer-patients-treated-with-immune-checkpoint-inhibitors
#8
REVIEW
Merav Lidar, Eitan Giat, Daniela Garelick, Yuval Horowitz, Howard Amital, Yael Steinberg-Silman, Jacob Shachter, Ronnie Shapira-Frommer, Gal Markel
BACKGROUND: The use of immune checkpoint inhibitors (ICI) has grown incessantly since they were first approved in 2014. These monoclonal antibodies inhibit T cell activation, yielding a dramatic tumor response with improved survival. However, immunotherapy is frequently hampered by immune adverse events (iAE) such as hypophysitis, colitis, hepatitis, pneumonitis and rash. Until recently, rheumatic side effects were only infrequently reported. Aim To describe the rheumatic manifestations encountered among patients treated with ICIs in a large tertiary cancer center in Israel METHODS: The cancer center's patient registry was screened for patients who had ever been treated with ipilimumab, pembrolizumab and/or nivolumab with relevant data gathered from clinical charts...
January 13, 2018: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29341906/lateralization-of-mother-infant-interactions-in-wild-horses
#9
Karina Karenina, Andrey Giljov, Yegor Malashichev
The manifestation of behavioural lateralization has been shown to be modified by environmental conditions, life experiences, and selective breeding. This study tests whether the lateralization recently found in feral domestic horse (Equus caballus) is evident in undomesticated horses. Mother-offspring interactions were investigated in Przewalski's horse (E. ferus przewalskii) living in their natural habitat in Mongolia. Lateral position preferences during mare-foal spontaneous reunions were used as a behavioural marker of visual lateralization...
January 13, 2018: Behavioural Processes
https://www.readbyqxmd.com/read/29341889/adventitial-activation-in-the-pathogenesis-of-injury-induced-arterial-remodeling-potential-implications-in-transplant-vasculopathy
#10
REVIEW
Jianli Wang, Yuan Wang, Jingjing Wang, Xiaosun Guo, Elsa C Chan, Fan Jiang
Transplant vasculopathy is one of the major causes of chronic rejection following solid organ transplantation. The pathogenic mechanisms of transplant vasculopathy are still poorly understood. Here we summarize current evidence suggesting that activation of the tunica adventitia may be involved in the pathogenesis of transplant vasculopathy. Adventitia is an early responder to various vascular injuries and plays an integral role in eliciting vascular inflammation and remodeling. Accumulation of macrophages in the adventitia promotes the development of vascular remodeling by releasing a variety of paracrine factors that have profound impacts on vascular mural cells...
January 13, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29341882/development-and-evaluation-of-a-website-for-surveillance-of-healthcare-associated-urinary-tract-infections-in-australia
#11
Oyebola Fasugba, Jane Koerner, Noleen Bennett, Simon Burrell, Roland Laguitan, Alex Hoskins, Wendy Beckingham, Brett G Mitchell, Anne Gardner
Phase II of the Surveillance to Reduce Urinary Tract Infections project piloted a website for point prevalence surveys of healthcare-associated (HAUTI) and catheter-associated urinary tract infection in Australian hospitals and aged care homes. This study describes development and evaluation of the website for online data collection. Evaluation findings from 38 data collectors indicated most respondents found website registration and web form use easy (n=22; 58% and n=16; 43%, respectively). The need for improved computer literacy skills and automated data systems were highlighted...
January 13, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29341881/clinical-implications-of-technological-advances-in-screening-for-atrial-fibrillation
#12
REVIEW
Nikhil Singh, Sung Chun, David Hadley, Victor Froelicher
The incidence of atrial fibrillation (AF) continues to increase worldwide as people live longer. AF is the leading cause of stroke among patients older than 75 years and is responsible for at least 15% of all strokes. Industry has responded to this problem with a plethora of monitoring devices. These include single lead ECG adhesive sensors, implantable loop recorders, smartphone attachments and wearables. This review will concentrate on clinical studies using these technologies. There are wearables including watches and watch-like devices that will be mentioned but these have not been validated for clinical use...
January 13, 2018: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29341845/outside-in-inside-out-creating-focus-on-the-patient-a-vaccine-company-perspective
#13
Denis Sohy, Isabelle Dusart, Philibert Goulet, Diane Visy, Luc Gasthuys, Tatjana Poplazarova, Thomas Breuer, Norman Begg
Involving patients in the development of medicines and vaccines should result in benefits to patients. The vaccine recipient is usually a healthy person. We describe the rationale and implementation of a vaccine company's initiative to encourage employees to identify with patients of the conditions prevented by the vaccines they help to produce. The Voice of the Patient ("VoP"), begun in 2014, is an educational programme directed at the 16,000 employees of a global vaccine company. It engages employees through an understanding that they are all "vaccine patients", and that they can make a difference by considering the impact of decisions made in their day to day work...
January 17, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29341809/modified-directed-self-learning-sessions-in-physiology-with-prereading-assignments-and-pecha-kucha-talks-perceptions-of-students
#14
Reem Rachel Abraham, Sharmila Torke, James Gonsalves, Sareesh Naduvil Narayanan, M Ganesh Kamath, Jay Prakash, Kiranmai S Rai
The present study reports perceptions of first-year undergraduate medical students ( n = 120), regarding modified directed self-learning (DSL) sessions in physiology. Students were provided with prereading assignments (faculty developed PowerPoint slides containing diagrams with incomplete labeling/flowcharts with missing steps) pertaining to the DSL topic 1 wk before the scheduled small-group DSL presentations. During DSL presentation sessions, which were facilitated by teachers, a few students individually presented learning objectives in the specified topic...
March 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29341789/psychometric-properties-of-the-epworth-sleepiness-scale-a-factor-analysis-and-item-response-theory-approach
#15
June J Pilcher, Fred S Switzer, Alec Munc, Janet Donnelly, Julia C Jellen, Claus Lamm
The purpose of this study is to examine the psychometric properties of the Epworth Sleepiness Scale (ESS) in two languages, German and English. Students from a university in Austria (N = 292; 55 males; mean age = 18.71 ± 1.71 years; 237 females; mean age = 18.24 ± 0.88 years) and a university in the US (N = 329; 128 males; mean age = 18.71 ± 0.88 years; 201 females; mean age = 21.59 ± 2.27 years) completed the ESS. An exploratory-factor analysis was completed to examine dimensionality of the ESS...
January 17, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29341617/enhancing-docetaxel-delivery-to-multidrug-resistant-cancer-cells-with-albumin-coated-nanocrystals
#16
Sheryhan F Gad, Joonyoung Park, Ji Eun Park, Gihan N Fetih, Sozan S Tous, Wooin Lee, Yoon Yeo
Intravenous delivery of poorly water-soluble anticancer drugs such as docetaxel (DTX) is challenging due to the low bioavailability and the toxicity related to solubilizing excipients. Colloidal nanoparticles are used as alternative carriers, but low drug loading capacity and circulation instability limit their clinical translation. To address these challenges, DTX nanocrystals (NCs) were prepared using Pluronic F127 as an intermediate stabilizer and albumin as a functional surface modifier, which were previously found to be effective in producing small and stable NCs...
January 17, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29341514/opportunity-costs-in-paediatric-training-the-specialist-registrars-experience
#17
M B O'Neill, T Nabialek, N Kandamany
In the training process, there is a tension between the work life and home life of trainees. This study explored both the personal impact and the opportunity costs of training from the Specialist Paediatric Registrar (SPR) perspective. The survey explored 1) career progression, 2) perceived functional effectiveness at work, 3) psychological impact of hospital based training, and 4) the personal and social cost of training. Fifty-three (71%) SPRs responded of whom 47 (89%)were married or in long term relationships...
August 8, 2017: Irish Medical Journal
https://www.readbyqxmd.com/read/29341512/food-allergy-emergencies-in-children-to-what-extent-are-early-years-services-prepared-a-cross-sectional-survey
#18
S MacGiobuin, V Stitt, D Philbin, B Higgins, G McGuire, A M O'Regan, M Kelly
Food allergies are common in preschool children. This study's aims are to establish prevalence, to clarify management practices, levels of preparedness and the perceived role of General Practitioners amongst Early Years Services providers. This study is an anonymous, quantitative, cross sectional study. An online questionnaire was distributed to 282 Early Years Service providers. Data were analysed using SPSS. Response rate was 35% (n=98). Prevalence of food allergy was 3% (n=119). Allergic reactions to food had occurred on site in 16% (n=15)...
August 8, 2017: Irish Medical Journal
https://www.readbyqxmd.com/read/29341442/motivating-influences-and-ability-based-outcomes-of-dental-hygiene-baccalaureate-education-in-canada
#19
Z Kanji, D M Laronde
BACKGROUND: There is a scarcity of studies on Canadian baccalaureate dental hygienists. As discussions about baccalaureate education for dental hygiene continue on a national level, examining outcomes of earning a dental hygiene degree is paramount. OBJECTIVE: To investigate the motivating reasons and ability-based outcomes of earning a Bachelor of Dental Science in Dental Hygiene (BDSc) degree from the University of British Columbia (UBC), Canada. METHODS: UBC dental hygiene entry-to-practice (ETP) and degree-completion (DC) graduates (n = 116; 32%) from 1994 to 2016 participated in an online mixed-methods survey...
January 17, 2018: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/29341435/bifunctional-fluorescent-probe-for-sequential-sensing-thiols-and-primary-aliphatic-amines-in-distinct-fluorescence-channels
#20
Lingliang Long, Meiyu Huang, Ning Wang, Xiangqi Yuan, Siyu Cao, Aihua Gong, Kun Wang
Thiols and primary aliphatic amines (PAA) are ubiquitous and extremely important species in biological system. They have performed significant interplaying roles in complex biological events. A single fluorescent probe differentiating both thiol and PAA can contribute to understanding the intrinsic inter-relationship of thiols and PAA in biological processes. Herein, we rationally constructed the first fluorescent probe that can respond to thiols and PAA in different fluorescence channels. The probe exhibited high selectivity and sensitivity to thiols and PAA...
January 17, 2018: Chemistry, An Asian Journal
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