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https://www.readbyqxmd.com/read/28811582/a-new-class-of-hybrid-secretion-system-is-employed-in-pseudomonas-amyloid-biogenesis
#1
Sarah L Rouse, William J Hawthorne, Jamie-Lee Berry, Dror S Chorev, Sandra A Ionescu, Sebastian Lambert, Fisentzos Stylianou, Wiebke Ewert, Uma Mackie, R Marc L Morgan, Daniel Otzen, Florian-Alexander Herbst, Per H Nielsen, Morten Dueholm, Hagan Bayley, Carol V Robinson, Stephen Hare, Stephen Matthews
Gram-negative bacteria possess specialised biogenesis machineries that facilitate the export of amyloid subunits for construction of a biofilm matrix. The secretion of bacterial functional amyloid requires a bespoke outer-membrane protein channel through which unfolded amyloid substrates are translocated. Here, we combine X-ray crystallography, native mass spectrometry, single-channel electrical recording, molecular simulations and circular dichroism measurements to provide high-resolution structural insight into the functional amyloid transporter from Pseudomonas, FapF...
August 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28804749/morphine-versus-methadone-treatment-for-neonatal-withdrawal-and-impact-on-early-infant-development
#2
Sharon Burke, Anna Malia Beckwith
Objective. Compare developmental outcomes in infants treated with morphine versus methadone. Method. Retrospective chart review of newborns identified through use of ICD-9 code for neonatal abstinence syndrome (NAS). Thirty-six infants were evaluated-17 treated with methadone and 19 treated with morphine. Assessment was completed following treatment using the Bayley Scales of Infant and Toddler Development-Third Edition (Bayley-III). Scores in Cognitive, Language, and Motor domains were compared. Results. Comparison of scores between morphine- and methadone-treated groups revealed differences in mean Cognitive Composite (91...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28803151/sex-specific-differences-in-effect-of-prenatal-exposure-to-dioxin-like-compounds-on-neurodevelopment-in-japanese-children-sapporo-cohort-study
#3
Sonomi Nakajima, Yasuaki Saijo, Chihiro Miyashita, Tamiko Ikeno, Seiko Sasaki, Junboku Kajiwara, Reiko Kishi
BACKGROUND: Consistent reports are not available on the effects of dioxin-like polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins (PCDD)/ polychlorinated dibenzofurans (PCDF) (dioxin-like compounds [DLCs]) on child neurodevelopment. Further, the effect of background-level exposure to individual DLC isomers is not known. OBJECTIVES: We carried out the Sapporo cohort study to evaluate the effect of prenatal exposure to each DLC isomer on child neurodevelopment at 6 and 18 months of age, and assessed sex-specific differences in these effects...
August 10, 2017: Environmental Research
https://www.readbyqxmd.com/read/28797452/outcome-following-radiotherapy-for-head-and-neck-basal-cell-carcinoma-with-aggressive-features
#4
Anupam Rishi, Shao Hui Huang, Brian O'Sullivan, David P Goldstein, Lin Lu, Jolie Ringash, John Waldron, Woody Wells, Alex Sun, Andrew Hope, Peter Chung, Meredith Giuliani, Anna Spreafico, Li Tong, Wei Xu, Andrew Bayley
OBJECTIVES: The literature demonstrates that 'aggressive' head-and-neck basal cell carcinomas (HN-BCC) have a higher than expected relapse rate with unfavorable outcomes. We report outcomes following definitive (dRT) or post-operative radiotherapy (PORT) for these tumors. METHODS: We reviewed all HN-BCC patients with 'aggressive' features (primary lesions diameter >10mm, >2 recurrences, or extra-cutaneous extension), treated with megavoltage dRT or PORT between 1998 and 2013...
September 2017: Oral Oncology
https://www.readbyqxmd.com/read/28795415/joint-bayesian-weight-and-height-postnatal-growth-model-to-study-the-effects-of-maternal-smoking-during-pregnancy
#5
Sophie Carles, Marie-Aline Charles, Barbara Heude, Ismaïl Ahmed, Jérémie Botton
Growth models used for describing the dynamics of body weight and height generally consider each trait independently. We proposed modeling height and weight trajectories jointly with a nonlinear heteroscedastic mixed model based on the Jenss-Bayley growth function with correlated individual random effects and using Bayesian inference techniques. Simulations showed that our model provides good estimates of the growth parameters. We illustrated how it can be used to assess the associations between maternal smoking during pregnancy, an early-life factor potentially involved in prenatal programming of obesity, and children's growth from birth to 5 years of age...
August 10, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28782547/early-life-stress-increases-testosterone-and-corticosterone-and-alters-stress-physiology-in-zebra-finches
#6
J Bayley Zito, Angy Hanna, Nora Kadoo, Michelle L Tomaszycki
Early life stress has enduring effects on behavior and physiology. However, the effects on hormones and stress physiology remain poorly understood. In the present study, parents of zebra finches of both sexes were exposed to an increased foraging paradigm from 3 to 33days post hatching. Plasma and brains were collected from chicks at 3 developmental time points: post hatching days 25, 60 and adulthood. Plasma was assayed for testosterone (T), estradiol (E2), and corticosterone (CORT). The paraventricular nucleus of the hypothalamus was assessed for corticotrophin releasing factor (CRH) and glucocorticoid receptor (GR) expression...
August 3, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28772198/cerebral-regional-oxygen-saturation-trends-in-infants-with-hypoxic-ischemic-encephalopathy
#7
Siddharth V Jain, Lindsay Pagano, Maria Gillam-Krakauer, James C Slaughter, Sumit Pruthi, Barbara Engelhardt
BACKGROUND: Neurological outcomes in neonatal hypoxic-ischemic encephalopathy (HIE) continue to be sub-optimal despite therapeutic hypothermia (TH). Cerebral near-infrared spectroscopy provides real-time regional oxygen saturation (CrSO2) that may be a marker of adverse MRI findings and neurodevelopmental outcomes. AIM: The aim of this study was to examine the value of CrSO2 monitoring in infants with HIE undergoing TH. STUDY DESIGN AND SUBJECTS: In this prospective study, CrSO2 was continuously recorded in 21 infants with HIE admitted for TH...
July 31, 2017: Early Human Development
https://www.readbyqxmd.com/read/28768286/nicu-human-milk-dose-and-20-month-neurodevelopmental-outcome-in-very-low-birth-weight-infants
#8
Kousiki Patra, Matthew Hamilton, Tricia J Johnson, Michelle Greene, Elizabeth Dabrowski, Paula P Meier, Aloka L Patel
BACKGROUND: The association between human milk (HM) feeding in the NICU and neurodevelopmental (ND) outcome in very low birth weight (VLBW) infants is unclear. Limitations of previous studies include a lack of exact estimates of HM dose and of generalizability to minority populations. OBJECTIVE: To determine the impact on ND outcome of an exact dose of HM received in the NICU in a diverse, contemporary cohort of VLBW infants. METHODS: We included 430 VLBW infants born in the period 2008-2012 for whom the mean daily dose (DD) of HM received during the stay in the NICU (NICU HM-DD) was calculated prospectively from the daily nutritional intake from admission to discharge...
August 3, 2017: Neonatology
https://www.readbyqxmd.com/read/28766622/functional-aqueous-droplet-networks
#9
REVIEW
Michael J Booth, Vanessa Restrepo Schild, Florence G Downs, Hagan Bayley
Droplet interface bilayers (DIBs), comprising individual lipid bilayers between pairs of aqueous droplets in an oil, are proving to be a useful tool for studying membrane proteins. Recently, attention has turned to the elaboration of networks of aqueous droplets, connected through functionalized interface bilayers, with collective properties unachievable in droplet pairs. Small 2D collections of droplets have been formed into soft biodevices, which can act as electronic components, light-sensors and batteries...
August 2, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28765636/high-resolution-patterned-cellular-constructs-by-droplet-based-3d-printing
#10
Alexander D Graham, Sam N Olof, Madeline J Burke, James P K Armstrong, Ellina A Mikhailova, James G Nicholson, Stuart J Box, Francis G Szele, Adam W Perriman, Hagan Bayley
Bioprinting is an emerging technique for the fabrication of living tissues that allows cells to be arranged in predetermined three-dimensional (3D) architectures. However, to date, there are limited examples of bioprinted constructs containing multiple cell types patterned at high-resolution. Here we present a low-cost process that employs 3D printing of aqueous droplets containing mammalian cells to produce robust, patterned constructs in oil, which were reproducibly transferred to culture medium. Human embryonic kidney (HEK) cells and ovine mesenchymal stem cells (oMSCs) were printed at tissue-relevant densities (10(7) cells mL(-1)) and a high droplet resolution of 1 nL...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28764752/facilitated-interprofessional-implementation-of-a-physical-rehabilitation-guideline-for-stroke-in-inpatient-settings-process-evaluation-of-a-cluster-randomized-trial
#11
Nancy M Salbach, Sharon Wood-Dauphinee, Johanne Desrosiers, Janice J Eng, Ian D Graham, Susan B Jaglal, Nicol Korner-Bitensky, Marilyn MacKay-Lyons, Nancy E Mayo, Carol L Richards, Robert W Teasell, Merrick Zwarenstein, Mark T Bayley
BACKGROUND: The Stroke Canada Optimization of Rehabilitation by Evidence-Implementation Trial (SCORE-IT) showed that a facilitated knowledge translation (KT) approach to implementing a stroke rehabilitation guideline was more likely than passive strategies to improve functional walking capacity, but not gross manual dexterity, among patients in rehabilitation hospitals. This paper presents the results of a planned process evaluation designed to assess whether the type and number of recommended treatments implemented by stroke teams in each group would help to explain the results related to patient outcomes...
August 1, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28754176/genome-wide-gene-by-lead-exposure-interaction-analysis-identifies-unc5d-as-a-candidate-gene-for-neurodevelopment
#12
Zhaoxi Wang, Birgit Claus Henn, Chaolong Wang, Yongyue Wei, Li Su, Ryan Sun, Han Chen, Peter J Wagner, Quan Lu, Xihong Lin, Robert Wright, David Bellinger, Molly Kile, Maitreyi Mazumdar, Martha Maria Tellez-Rojo, Lourdes Schnaas, David C Christiani
BACKGROUND: Neurodevelopment is a complex process involving both genetic and environmental factors. Prenatal exposure to lead (Pb) has been associated with lower performance on neurodevelopmental tests. Adverse neurodevelopmental outcomes are more frequent and/or more severe when toxic exposures interact with genetic susceptibility. METHODS: To explore possible loci associated with increased susceptibility to prenatal Pb exposure, we performed a genome-wide gene-environment interaction study (GWIS) in young children from Mexico (n = 390) and Bangladesh (n = 497)...
July 28, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28743938/lactate-provides-a-strong-ph-independent-ventilatory-signal-in-the-facultative-air-breathing-teleost-pangasianodon-hypophthalmus
#13
Mikkel T Thomsen, Tobias Wang, William K Milsom, Mark Bayley
Fish regulate ventilation primarily by sensing O2-levels in the water and arterial blood. It is well established that this sensory process involves several steps, but the underlying mechanisms remain frustratingly elusive. Here we examine the effect of increasing lactate ions at constant pH on ventilation in a teleost; specifically the facultative air-breathing catfish Pangasianodon hypophthalmus. At lactate levels within the physiological range obtained by Na-Lactate injections (3.5 ± 0.8 to 10.9 ± 0...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728787/prenatal-co-exposure-to-manganese-and-depression-and-24-months-neurodevelopment
#14
Teresa Verenice Muñoz-Rocha, Marcela Tamayo Y Ortiz, Martín Romero, Ivan Pantic, Lourdes Schnaas, David Bellinger, Birgit Claus-Henn, Rosalind Wright, Robert O Wright, Mara Téllez-Rojo
BACKGROUND: Normal prenatal neurodevelopment follows stages that are potentially influenced by both chemical and psychosocial environments. Exposure to elevated manganese during this critically vulnerable period has been found to be neurotoxic. Independently, maternal prenatal depression has been associated with subsequent neurodevelopmental decrements in children. The association between child neurodevelopment and prenatal co-exposure to manganese and maternal depression has not been sufficiently studied...
July 17, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28722635/early-life-inflammation-and-neurodevelopmental-outcome-in-bangladeshi-infants-growing-up-in-adversity
#15
Nona M Jiang, Fahmida Tofail, Jennie Z Ma, Rashidul Haque, Beth Kirkpatrick, Charles A Nelson, William A Petri
Exposure to profound adversity can negatively affect the neurodevelopment of children, but biologic mechanisms that underlie this association remain unknown. We sought to determine whether elevated levels of the inflammatory markers C-reactive protein (CRP) and soluble CD14 (sCD14) are associated with neurodevelopmental outcomes in Bangladeshi children. A total of 422 infant-mother pairs from an urban slum in Dhaka, Bangladesh, were enrolled at birth and followed prospectively. Inflammation was measured with sCD14, interleukin (IL)-1β, and IL-6 at 18 weeks, and CRP at 6, 18, 40, and 53 weeks...
July 17, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28720023/early-motor-development-and-cognitive-abilities-among-mexican-preschoolers
#16
Erika Osorio-Valencia, Luisa Torres-Sánchez, Lizbeth López-Carrillo, Stephen J Rothenberg, Lourdes Schnaas
Psychomotricity plays a very important role in children's development, especially for learning involving reading-writing and mathematical calculations. Evaluate motor development in children 3 years old and its relationship with their cognitive abilities at the age of 5 years. Based on a cohort study, we analyzed the information about motor performance evaluated at 3 years old by Peabody Motor Scale and cognitive abilities at 5 years old. The association was estimated using linear regression models adjusted by mother's intelligence quotient, sex, Bayley mental development index at 18 months, and quality of the environment at home (HOME scale)...
July 18, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28716072/effect-of-prenatal-exposure-to-maternal-cortisol-and-psychological-distress-on-infant-development-in-bengaluru-southern-india-a-prospective-cohort-study
#17
Anita Nath, Gudlavalleti Venkata Satyanarayana Murthy, Giridhara R Babu, Gian Carlo Di Renzo
BACKGROUND: The mental health status of a pregnant woman and its consequent impact on foetal well being is not given much importance compared to the risk imposed by obstetric complications and medical conditions. Maternal psychological distress is a major public health problem and needs timely detection and intervention to prevent any adverse pregnancy outcome. There is ample evidence from literature that justifies the association of prenatal maternal mental stress and elevated cortisol with delayed infant motor and cognitive development; evidence from India being rather limited...
July 17, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28715787/micronutrients-during-pregnancy-and-child-psychomotor-development-opposite-effects-of-zinc-and-selenium
#18
Kinga Polanska, Wojciech Hanke, Anna Krol, Jolanta Gromadzinska, Renata Kuras, Beata Janasik, Wojciech Wasowicz, Fiorino Mirabella, Flavia Chiarotti, Gemma Calamandrei
Studies on the impact of micronutrient levels during different pregnancy periods on child psychomotor functions are limited. The aim of this study was to evaluate the association between maternal plasma concentrations of selected micronutrients, such as: copper (Cu), zinc (Zn), selenium (Se), and child neuropsychological development. The study population consisted of 539 mother-child pairs from Polish Mother and Child Cohort (REPRO_PL). The micronutrient levels were measured in each trimester of pregnancy, at delivery and in the cord blood...
July 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28714930/environmental-tobacco-smoke-exposure-during-pregnancy-and-child-neurodevelopment
#19
Kinga Polanska, Anna Krol, Dorota Merecz-Kot, Danuta Ligocka, Karolina Mikolajewska, Fiorino Mirabella, Flavia Chiarotti, Gemma Calamandrei, Wojciech Hanke
The developing fetus is especially vulnerable to environmental toxicants, including tobacco constituents. The aim of this study was to assess the impact of environmental tobacco smoke (ETS) exposure during pregnancy on child neurodevelopment within the first two years of life. The study population consisted of 461 non-smoking pregnant women (saliva cotinine level <10 ng/mL). Maternal passive smoking was assessed based on the cotinine level in saliva analyzed by the use of high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC-ESI + MS/MS) and by questionnaire data...
July 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28714339/inhaled-and-systemic-steroid-exposure-and-neurodevelopmental-outcome-of-preterm-neonates
#20
Edmond N Kelly, Vibhuti S Shah, Jody Levenbach, Michael Vincer, Orlando DaSilva, Prakesh S Shah
OBJECTIVES: To compare death and/or neurodevelopmental outcomes of preterm infants exposed to inhaled and/or systemic steroids with those without exposure, and examine the impact of timing of exposure. METHODS: Retrospective study of infants born <29 weeks gestation and assessed at 18-21 months corrected age (CA). Neurodevelopmental impairment (NDI) was defined as any Bayley Scales of Infant and Toddler Development-III (BSID-III) score <85, cerebral palsy ≥ grade one, and visual or hearing impairment...
July 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
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