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https://www.readbyqxmd.com/read/29141247/connections-of-anterior-thalamic-visual-centers-in-the-leopard-frog-rana-pipiens
#1
Eric W Recktenwald, Elizabeth A Dudkin, Laura K Skorina, William M Saidel, Edward R Gruberg
The amphibian retina projects to two discrete regions of neuropil in the anterior thalamus: the neuropil of Bellonci and the corpus geniculatum. These retinorecipient areas are encompassed within a larger zone of surrounding neuropil we call the NCZ (for neuropil of Bellonci/corpus geniculatum zone). The NCZ is characterized electrophysiologically by a distinctive tonic oscillatory response to blue light; it appears to be a visual module involved in processing the stationary visual environment. Using horseradish peroxidase (HRP), we mapped the connections of the NCZ...
November 16, 2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/29138252/apical-polarization-and-lumenogenesis-the-apicosome-sheds-new-light
#2
Alejandra I Romero-Morales, Natalya A Ortolano, Vivian Gama
Establishment of apico-basal polarity is critical for the lumenal epiblast-like morphogenesis of human pluripotent stem cells (hPSCs). In this issue, Taniguchi et al. (2017. J Cell Biol. https://doi.org/10.1083.jcb201704085) describe a structure called the apicosome, generated in single hPSCs, that allows them to self-organize and form the lumenal epiblast-like stage.
November 14, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29137500/mentor-mothers-program-improved-child-health-outcomes-at-a-relatively-low-cost-in-south-africa
#3
Adriane Wynn, Mary Jane Rotheram-Borus, Arleen A Leibowitz, Thomas Weichle, Ingrid le Roux, Mark Tomlinson
In light of South Africa's high prenatal HIV prevalence and infant mortality rate, a cluster randomized controlled trial was conducted to evaluate an intervention called Philani+, which used community health workers (known as Mentor Mothers) to deliver pre- and postnatal home visits in Cape Town, South Africa, to improve maternal and child health. We assessed the costs and benefits of this intervention and made comparisons with other scenarios that depicted increased capacity and provision of nurse-delivered care...
November 2017: Health Affairs
https://www.readbyqxmd.com/read/29135391/gongylonema-parasites-of-rodents-a-key-to-species-and-new-data-on-gongylonema-neoplasticum
#4
Helrik Costa Cordeiro, Francisco Tiago de Vasconcelos Melo, Elane Guerreiro Giese, Jeannie Nascimento Dos Santos
Specimens of the genus Gongylonema were collected from the gastric mucosa of rodents of the Rattus rattus Linnaeus, 1758 and Rattus norvegicus Berkenhout, 1769 collected in urban areas in Belém, Pará, in the eastern Brazilian Amazon. The helminths were processed for analysis using light microscopy and scanning electron microscopy (SEM) techniques, and presented taxonomic characteristics of the species Gongylonema neoplasticum. The SEM analyses revealed the presence of 2 developed buccal plates (1 dorsal, 1 ventral), also called interlabia, with a proeminent and bifurcated ventral plaque...
November 14, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/29134928/potential-link-between-post-acute-ischemic-stroke-exposure-to-hypoglycemia-and-hemorrhagic-transformation
#5
Kyle D Klingbeil, Sebastian Koch, Kunjan R Dave
Hemorrhagic transformation is a severe complication of acute ischemic stroke owing to its limited treatment options and poor prognosis. In the last decade, the rates of hemorrhagic transformation incidence have been associated with blood glucose levels. In particular, hyperglycemia at the time of admission has been associated with increased rates of hemorrhagic transformation in acute ischemic stroke patients. Recent pilot clinical trials have attempted to use intensive insulin therapy during stroke treatment to reduce the severity of cerebral infarction and possibly alleviate the risk of hemorrhagic transformation...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/29134006/cecidonius-pampeanus-gen-et-sp-n-an-overlooked-and-rare-new-gall-inducing-micromoth-associated-with-schinus-in-southern-brazil-lepidoptera-cecidosidae
#6
Gilson R P Moreira, Rodrigo P Eltz, Ramoim B Pase, Gabriela T Silva, Sérgio A L Bordignon, Wolfram Mey, Gislene L Gonçalves
Galls induced by the larval stage of cecidosids (Lepidoptera: Cecidosidae) are complex, multi-trophic systems, still poorly studied. They may be associated with other insect feeding guilds, including inquilines, kleptoparasites, cecidophages, parasitoids, and predators. By causing death of the gall inducer early in life and altering the gall phenotype, inquilines may lead to misidentification of the true gall inducers. Here, we describe through light and scanning electron microscopy Cecidonius pampeanus, a new genus and species of cecidosid moth, from the Pampa biome, south Brazil...
2017: ZooKeys
https://www.readbyqxmd.com/read/29133493/an-autoethnographic-examination-of-postpartum-depression
#7
Tara Lynn Frankhouser, Nicole L Defenbaugh
PURPOSE: This article examines postpartum depression (PPD) using autoethnography to explore the stigmatization of depression and cultural expectations of motherhood. Because the personal experiences of living with PPD are often absent from primary care literature, this article uses first-person narrative and analysis of intensive mothering to explore the barriers to seeking PPD treatment, the need for increasing physician confidence and comfort using screening tools, and the impact PPD stigma has on patients and their health care...
November 2017: Annals of Family Medicine
https://www.readbyqxmd.com/read/29131183/efficient-signal-design-and-optimal-power-allocation-for-visible-light-communication-attocell-systems
#8
Zheng-Guo Sun, Hongyi Yu, Yi-Jun Zhu
In this paper, we investigate visible light communication (VLC) attocell systems in which any two neighboring attocells overlap. An efficient signal design for VLC called time superposition reuse (TSR) is proposed to mitigate interference and improve spectral efficiency. In the scheme, two neighboring cells are allocated with two time slots that have superposition in the time domain. By adjusting superposition between time slots, the system can achieve a flexible spectral efficiency and system performance. Further, we develop an optimal power allocation strategy for TSR in the system...
November 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/29129898/aggregation-behavior-of-disulfide-linked-gemini-surfactants-compared-to-that-of-double-tailed-surfactants
#9
Yukina Takano, Tsuyoshi Asakawa, Mayumi Inai, Akio Ohta, Hitoshi Asakawa
Disulfide linked gemini surfactant having a long spacer chain, [C10H21N(CH3)2(CH2)11SS(CH2)11N (CH3)2C10H21]2Br (2C1011SS), was prepared by the hydrolysis and oxidation process of thioester group for [C10H21N(CH3)2(CH2)11SCOCH3]Br. The critical vesicle concentrations of double tailed surfactants such as dialkyldimethylammonium bromide were observed by the conductivity and light scattering methods. The disulfide bonds of gemini surfactant, [C12H25N(CH3)2CH2CH2SSCH2CH2N(CH3)2C12H25]2Br (2C12SS), were rapidly cleaved by the addition of water-soluble dithiothreitol...
November 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/29128502/lead-apron-inspection-using-infrared-light-a-model-validation-study
#10
Sarah E McKenney, Hansel J Otero, Stanley T Fricke
PURPOSE: To evaluate defect detection in radiation protective apparel, typically called lead aprons, using infrared (IR) thermal imaging. The use of IR lighting eliminates the need for access to x-ray-emitting equipment and radiation dose to the inspector. MATERIALS AND METHODS: The performance of radiation workers was prospectively assessed using both a tactile inspection and the IR inspection with a lead apron phantom over a 2-month period. The phantom was a modified lead apron with a series of nine holes of increasing diameter ranging from 2 to 35 mm in accordance with typical rejection criteria...
November 8, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29126958/effects-of-led-based-photodynamic-therapy-using-red-and-blue-lights-with-natural-hydrophobic-photosensitizers-on-human-glioma-cell-line
#11
Zahra Jamali, Sedigheh Marjaneh Hejazi, Seyed Mohsen Ebrahimi, Hemen Moradi-Sardareh, Maliheh Paknejad
Photodynamic therapy (PDT) has received high attention in cancer treatment due to its minimal side effects, specific cancer-targeting, non-invasion and low cost. It utilizes a specific group of anti-cancer drugs called photosensitizers (PS), which can be only activated under a certain wavelength light illumination and kills cancer cells. To screen the potential of PS and setup of PDT treatment protocol, it is essential to assess the PDT efficacy in vitro. In this study, a light-emitting diode- (LED-) based illumination system at two wavelengths (red & blue) with homogeneous and stable irradiation, and constant temperature conditions in 96-well plates was provided...
November 7, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29126322/characterization-of-odorant-receptors-from-a-non-ditrysian-moth-eriocrania-semipurpurella-sheds-light-on-the-origin-of-sex-pheromone-receptors-in-lepidoptera
#12
Jothi Kumar Yuvaraj, Jacob A Corcoran, Martin N Andersson, Richard D Newcomb, Olle Anderbrant, Christer Löfstedt
Pheromone receptors (PRs) are essential in moths to detect sex pheromones for mate finding. However, it remains unknown from which ancestral proteins these specialized receptors arose. The oldest lineages of moths, so-called non-ditrysian moths, use short-chain pheromone components, secondary alcohols, or ketones, so called Type 0 pheromones that are similar to many common plant volatiles. It is, therefore, possible that receptors for these ancestral pheromones evolved from receptors detecting plant volatiles...
November 1, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29125215/additive-manufacturing-a-comparative-analysis-of-dimensional-accuracy-and-skin-texture-reproduction-of-auricular-prostheses-replicas
#13
Alexey Unkovskiy, Sebastian Spintzyk, Detlef Axmann, Eva-Maria Engel, Heiner Weber, Fabian Huettig
PURPOSE: The use of computer-aided design/computer-aided manufacturing (CAD/CAM) and additive manufacturing in maxillofacial prosthetics has been widely acknowledged. Rapid prototyping can be considered for manufacturing of auricular prostheses. Therefore, so-called prostheses replicas can be fabricated by digital means. The objective of this study was to identify a superior additive manufacturing method to fabricate auricular prosthesis replicas (APRs) within a digital workflow. MATERIALS AND METHODS: Auricles of 23 healthy subjects (mean age of 37...
November 10, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29124376/an-alternative-rhinoplasty-technique-rotational-spreader-flap-rabbit-flap
#14
Ali Ahmet Sirin, Ibrahim Erdim, Omer Erdur, Alperen Sirin
BACKGROUND: In modern rhinoplasty, septal cartilage is the most commonly used graft material. It is a big challenge if septal cartilage is insufficient. We present an alternative technique named the "rabbit flap," created from the cephalic portion of the lower lateral cartilage to show its effectiveness on nasolabial angle, nasal axis deviation, and nasal dorsal line. METHODS: An alternative flap, called a "rabbit flap," is constituted from the cephalic portion of the lower lateral cartilage (LLC)...
November 9, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29123473/neurobehavioral-abnormalities-associated-with-executive-dysfunction-after-traumatic-brain-injury
#15
REVIEW
Rodger Ll Wood, Andrew Worthington
Objective: This article will address how anomalies of executive function after traumatic brain injury (TBI) can translate into altered social behavior that has an impact on a person's capacity to live safely and independently in the community. Method: Review of literature on executive and neurobehavioral function linked to cognitive ageing in neurologically healthy populations and late neurocognitive effects of serious TBI. Information was collated from internet searches involving MEDLINE, PubMed, PyscINFO and Google Scholar as well as the authors' own catalogs...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29123155/large-scale-in-vitro-production-refolding-and-dimerization-of-psbs-in-different-microenvironments
#16
Maithili Krishnan, Geri F Moolenaar, Karthick Babu Sai Sankar Gupta, Nora Goosen, Anjali Pandit
Plants adapt to fluctuating light conditions by a process called non-photochemical quenching (NPQ), where membrane protein PsbS plays a crucial role and transforms a change in the pH-gradient across the thylakoid membrane under excess light conditions into a photoprotective state, leading to de-excitation of antenna chlorophylls. The PsbS activation mechanism is elusive and has been proposed to involve a monomerization step and protonation of specific residues. To elucidate its function, it is essential to produce PsbS in large quantities, stabilize PsbS in a membrane-mimicking environment and analyze its pH-dependent conformational structure...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29123061/properties-and-potential-optoelectronic-applications-of-lead-halide-perovskite-nanocrystals
#17
REVIEW
Maksym V Kovalenko, Loredana Protesescu, Maryna I Bodnarchuk
Semiconducting lead halide perovskites (LHPs) have not only become prominent thin-film absorber materials in photovoltaics but have also proven to be disruptive in the field of colloidal semiconductor nanocrystals (NCs). The most important feature of LHP NCs is their so-called defect-tolerance-the apparently benign nature of structural defects, highly abundant in these compounds, with respect to optical and electronic properties. Here, we review the important differences that exist in the chemistry and physics of LHP NCs as compared with more conventional, tetrahedrally bonded, elemental, and binary semiconductor NCs (such as silicon, germanium, cadmium selenide, gallium arsenide, and indium phosphide)...
November 10, 2017: Science
https://www.readbyqxmd.com/read/29120316/weighing-in-on-canadian-school-based-vision-screening-a-call-for-action
#18
Katie P Bennett, Wendy Maloney
Vision-screening programs are designed to detect common causes of visual impairment and increase the likelihood of early diagnosis and treatment. In the health authority Eastern Health - Newfoundland and Labrador, public health leaders raised a concern about the efficiency and effectiveness of the current non-routine, opportunistic vision screening protocol for school-aged children. An environmental scan of screening practices and programs across Canada was conducted, yielding a wide range of inconsistencies with respect to program type, target population, and screening tools...
November 9, 2017: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
https://www.readbyqxmd.com/read/29120080/visible-light-photoactive-highly-efficient-triplet-sensitizers-based-on-iodinated-aza-bodipys-synthesis-photophysics-and-redox-properties
#19
Łukasz Łapok, Arkadiusz Gut, Dawid Drelinkiewicz, Tomasz Pędziński, Bronisław Marciniak, Maria Nowakowska
A series of novel iodinated NO2-substituted aza-BODIPYs have been synthesized and characterized. Highly desirable photophysical and photochemical properties were induced in NO2-substituted aza-BODIPYs by iodination of the pyrrole rings. In particular, high values of singlet oxygen quantum yields (ΦΔ) ranging from 0.79 to 0.85 were measured. The photooxygenation process proceeds via Type II mechanism under the experimental conditions applied. The compounds studied exhibited an absorption band within the so-called "therapeutic window", with λmax located between 645 nm to 672 nm...
November 9, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/29119946/conversion-of-isotropic-fluorescence-into-a-long-range-non-diverging-beam
#20
Douguo Zhang, Liang Fu Zhu, Chen Junxue, Ruxue Wang, Pei Wang, Hai Ming, Ramachandram Badugu, Mary Rosenfeld, Qiwen Zhan, Cuifang Kuang, Xu Liu, Joseph R Lakowicz
Fluorescent samples typically emit isotropically in all directions. Large lenses and other optical components are needed to capture a significant fraction of the emission, and complex confocal microscopes are required for high resolution focal-plane imaging. It is known that Bessel beams have remarkable properties of being able to travel over long distances, over 1000 times the wavelength, without diverging, and hence are called non-diffracting beams. In previous reports the Bessel beams were formed by an incident light source, typically with plane-wave illumination on a circular aperture...
November 9, 2017: Methods and Applications in Fluorescence
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