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https://www.readbyqxmd.com/read/28647138/think-like-a-sponge-the-genetic-signal-of-sensory-cells-in-sponges
#1
REVIEW
Jasmine L Mah, Sally P Leys
A complex genetic repertoire underlies the apparently simple body plan of sponges. Among the genes present in poriferans are those fundamental to the sensory and nervous systems of other animals. Sponges are dynamic and sensitive animals and it is intuitive to link these genes to behaviour. The proposal that ctenophores are the earliest diverging metazoan has led to the question of whether sponges possess a 'pre-nervous' system or have undergone nervous system loss. Both lines of thought generally assume that the last common ancestor of sponges and eumetazoans possessed the genetic modules that underlie sensory abilities...
June 21, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28644549/a-retrospective-analysis-of-the-symptoms-and-course-of-dengue-infection-during-pregnancy
#2
Kavita Agarwal, Sunita Malik, Pratima Mittal
OBJECTIVE: To assess outcomes among pregnant women diagnosed with dengue infection. METHODS: In a retrospective study, the medical records of all pregnant women with dengue infection admitted to Safdarjung Hospital, New Delhi, India, from July to December 2015 were reviewed. Maternal and fetal outcomes were compared by pregnancy length and stage of disease at diagnosis. RESULTS: Overall, 62 pregnant women with dengue infection were identified...
June 23, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28642191/new-aspects-in-free-flap-surgery-mini-perforator-flaps-and-extracorporeal-flap-perfusion
#3
Klaus-Dietrich Wolff
BACKGROUND: The scope of microvascular tissue transfer in the Head and Neck reaches from coverage of simple soft tissue defects to complex 3-D reconstructions using multiple or chimeric flaps. This paper summarises the presentation given at the Congress of the French Society of Oral and Maxillofacial Surgery in Marseille 2017. It was the aim of our work to add further elements to this wide spectrum of reconstructive possibilities. METHODS: For patients with small intraoral soft tissue defects in whom the use of a radial forearm flap would not be justified because of its donor site morbidity, but who nevertheless would take a benefit from a small free flap, we used mini-perforator flaps from the lower leg...
June 19, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28638596/environmental-insults-critical-triggers-for-amyotrophic-lateral-sclerosis
#4
REVIEW
Bing Yu, Roger Pamphlett
BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterised by a rapid loss of lower and upper motor neurons. As a complex disease, the ageing process and complicated gene-environment interactions are involved in the majority of cases. MAIN BODY: Significant advances have been made in unravelling the genetic susceptibility to ALS with massively parallel sequencing technologies, while environmental insults remain a suspected but largely unexplored source of risk...
2017: Translational Neurodegeneration
https://www.readbyqxmd.com/read/28636924/epithelial-folding-driven-by-apical-or-basal-lateral-modulation-geometric-features-mechanical-inference-and-boundary-effects
#5
Fu-Lai Wen, Yu-Chiun Wang, Tatsuo Shibata
During embryonic development, epithelial sheets fold into complex structures required for tissue and organ functions. Although substantial efforts have been devoted to identifying molecular mechanisms underlying epithelial folding, far less is understood about how forces deform individual cells to sculpt the overall sheet morphology. Here we describe a simple and general theoretical model for the autonomous folding of monolayered epithelial sheets. We show that active modulation of intracellular mechanics along the basal-lateral as well as the apical surfaces is capable of inducing fold formation in the absence of buckling instability...
June 20, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28623335/complex-neuroanatomy-in-the-rostrum-of-the-isle-of-wight-theropod-neovenator-salerii
#6
Chris Tijani Barker, Darren Naish, Elis Newham, Orestis L Katsamenis, Gareth Dyke
The discovery of large, complex, internal canals within the rostra of fossil reptiles has been linked with an enhanced tactile function utilised in an aquatic context, so far in pliosaurids, the Cretaceous theropod Spinosaurus, and the related spinosaurid Baryonyx. Here, we report the presence of a complex network of large, laterally situated, anastomosing channels, discovered via micro-focus computed tomography (μCT), in the premaxilla and maxilla of Neovenator, a mid-sized allosauroid theropod from the Early Cretaceous of the UK...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619048/hematochezia-caused-by-eosinophilic-proctocolitis-in-a-newborn-before-oral-feeding-a-case-report
#7
Marie-Julie Debuf, Tania Claeys, Jean-Philippe Stalens, Luc Cornette
BACKGROUND: Hematochezia is a frequent symptom in early infancy. However, it occurs very rarely within the immediate neonatal period, and its occurrence before any oral intake is particularly rare. Because of the "congenital" presentation of hematochezia in our patient, we initially considered our case to be a non-classical, potentially severe type of food protein-induced allergic proctocolitis. This diagnosis needs to be confirmed by an abnormal oral challenge test once the hematochezia has disappeared...
June 16, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28619000/astrocytes-pathology-in-als-a-potential-therapeutic-target
#8
Sonja Johann
The mechanisms underlying neurodegeneration in amyotrophic lateral sclerosis (ALS) are multifactorial and include genetic and environmental factors. Nowadays, it is well accepted that neuronal loss is driven by non-cell autonomous toxicity. Non-neuronal cells, such as astrocytes, have been described to significantly contribute to motoneuron cell death and disease progression in cell culture experiments and animal models of ALS. Astrocytes are essential for neuronal survival and function by regulating neurotransmitter and ion homeostasis, immune response, blood flow and glucose uptake, antioxidant defence and growth factor release...
June 15, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28618433/crestal-sinus-augmentation-with-recombinant-human-bone-morphogenetic-protein-2-clinical-and-radiographic-outcomes-of-2-year-pilot-trial
#9
Ulrike Kuchler, Claudia M Rudelstorfer, Barbara Barth, Gabor Tepper, Dominika Lidinsky, Patrick Heimel, Georg Watzek, Reinhard Gruber
PURPOSE: Recombinant human bone morphogenetic protein 2 (rhBMP-2) together with an absorbable collagen carrier (ACS) was approved for augmentation of the maxillary sinus prior to implant placement. The original registration trial was based on a lateral window approach. Clinical outcomes of crestal sinus augmentation with rhBMP-2 have not been reported so far. MATERIALS AND METHODS: An uncontrolled pilot trial in which seven patients with a residual maxillary height below 5 mm were enrolled to receive crestal sinus augmentation with rhBMP-2/ACS was conducted...
June 14, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28615867/first-record-of-a-rare-transversotrematid-cercaria-larva-trematoda-digenea-from-rajasthan-india-focus-on-seasonal-occurrence-and-host-specificity-of-diverse-cercariae
#10
Shanti Lal Choubisa, Vishva Jeet Jaroli, Zulfiya Sheikh
During the survey of freshwater snail hosts and their digenean larval trematode parasites, a rare cercaria larva belonging to family Transversotrematidae and subclass Digenea (Trematoda) was recovered from the snail species Melanoides striatella tuberculata inhabiting perennial Som river of Udaipur district, Rajasthan, India. More than 28 % mature specimens of these snails were found to be infected with transversotrematid cercaria larvae in the spring season. Body of this cercaria is large, bowl-shaped, biocellate, spinose, transparent and laterally extended having two pigmented eye spots, two hold fast organs extended from the junction of body and tail, large tail with two foliated furcal rami, and cyclocoel intestinal caeca...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28611661/discovery-and-development-of-calcium-channel-blockers
#11
REVIEW
Théophile Godfraind
In the mid 1960s, experimental work on molecules under screening as coronary dilators allowed the discovery of the mechanism of calcium entry blockade by drugs later named calcium channel blockers. This paper summarizes scientific research on these small molecules interacting directly with L-type voltage-operated calcium channels. It also reports on experimental approaches translated into understanding of their therapeutic actions. The importance of calcium in muscle contraction was discovered by Sidney Ringer who reported this fact in 1883...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28610254/three-new-macropsini-hemiptera-cicadellidae-leafhopper-species-from-australia
#12
Liyuan Yang, Christopher H Dietrich, Yalin Zhang
Three new species, Macropsella recta, Toropsis minuspina and Varicopsella apecurvata spp. nov. are described and illustrated from Australia.       Leafhoppers of the subfamily Macropsinae are found abundantly in the Holarctic, Oriental and Australian regions (Linnavuori, 1978) and have been collected from around the world, except for Antarctica, Oceania and South America (Hamilton, 1980). Both Hamilton (1980) and Evans (1966) suggested that there were likely a myriad of uncollected and undescribed species in Australia alone and Evans (1971) commented that the Macropsinae are possibly more abundant in Australia than anywhere else in the world...
June 2, 2017: Zootaxa
https://www.readbyqxmd.com/read/28608273/how-long-lasting-is-the-post-conflict-slowing-after-incongruent-trials-evidence-from-the-stroop-simon-and-flanker-tasks
#13
Alodie Rey-Mermet, Beat Meier
The purpose of the present study was to determine how long-lasting the post-conflict slowing following incongruent stimuli is. In previous research, incongruent stimuli have been used to induce a conflict because they have relevant features for two different response alternatives. So far, the post-conflict slowing following incongruent stimuli has mainly been assessed up to one trial. In the first two experiments, we assessed the persistence of the post-conflict slowing across several trials. To this end, we presented a few incongruent stimuli among non-conflict stimuli...
June 12, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28607415/molecular-phylogenies-indicate-a-paleo-tibetan-origin-of-himalayan-lazy-toads-scutiger
#14
Sylvia Hofmann, Matthias Stöck, Yuchi Zheng, Francesco G Ficetola, Jia-Tang Li, Ulrich Scheidt, Joachim Schmidt
The Himalaya presents an outstanding geologically active orogen and biodiversity hotspot. However, our understanding of the historical biogeography of its fauna is far from comprehensive. Many taxa are commonly assumed to have originated from China-Indochina and dispersed westward along the Himalayan chain. Alternatively, the "Tibetan-origin hypothesis" suggests primary diversification of lineages in Paleo-Tibet, and secondary diversification along the slopes of the later uplifted Greater Himalaya. We test these hypotheses in high-mountain megophryid anurans (Scutiger)...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28601155/boar-genotype-as-a-factor-shaping-age-related-changes-in-semen-parameters-and-reproduction-longevity-simulations
#15
Damian Knecht, Anna Jankowska-Mąkosa, Kamil Duziński
The aim of this study was a detailed analysis of the boar genotypes used in AI stations with an indication of their production capacity, including age and a precise analysis of their culling time and reason. The study included 334 boars: 81 Polish Large White (PLW), 108 Polish Landrace (PL), 49 Pietrain (P), 56 Duroc × Pietrain (D × P) and 40 Hampshire × Pietrain (H × P). Semen volume, spermatozoa concentration, total number of spermatozoa, number of motile spermatozoa, and number of insemination doses were analyzed...
August 2017: Theriogenology
https://www.readbyqxmd.com/read/28593416/laparoscopic-left-liver-resections-how-far-can-we-go
#16
Giada Pattaro, David Fuks, Hadrien Tranchart, Giuseppe Maria Ettorre, Amal Suhool, Christophe Bourdeaux, Panagiotis Lainas, Ibrahim Dagher, Brice Gayet
INTRODUCTION: The aim of this study was to analyse the outcomes of laparoscopic anatomic hepatectomies of the left liver segments. METHODS: This is a retrospective multicentre study including all patients operated on laparoscopically divided into unisegmentectomy of 2, 3 or 4 (Group 1), left lobectomy (or left lateral sectionectomy LLS) (Group 2), left hepatectomy (Group 3) and extended left hepatectomy (Group 4) between 2000 and 2016. These four groups were compared in terms of demographics, intraoperative data and postoperative outcomes...
June 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28586544/segmental-and-regional-quantification-of-3d-cellular-density-of-human-meniscus-from-osteoarthritic-knee
#17
Ibrahim Fatih Cengiz, Hélder Pereira, José Miguel Pêgo, Nuno Sousa, João Espregueira-Mendes, Joaquim Miguel Oliveira, Rui Luís Reis
The knee menisci have important roles in the knee joint. Complete healing of the meniscus remains a challenge in the clinics. Cellularity is one of the most important biological parameters that must be taken into account in regenerative strategies. However, knowledge on the 3D cellularity of the human meniscus is lacking in the literature. The aim of this study was to quantify the 3D cellular density of human meniscus from the osteoarthritic knee in a segmental and regional manner with respect to laterality...
June 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28586287/esophageal-penetration-of-the-magnetic-sphincter-augmentation-device-history-repeats-itself
#18
Renato Salvador, Mario Costantini, Giovanni Capovilla, Lino Polese, Stefano Merigliano
BACKGROUND: An alternative approach to the treatment of gastroesophageal reflux disease (GERD) has recently been introduced in clinical practice, involving the implantation of a magnetic sphincter augmentation device (MSAD). This "magnetic ring" is implanted laparoscopically around the lower esophageal sphincter to improve its barrier function. The literature is still limited on the midterm results achieved in controlling reflux because the MSAD is a very new procedure. So far, only a few cases of the MSAD causing erosion of the esophagus have been reported...
June 6, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28585042/characterizing-the-interactions-of-two-lipid-modifications-with-lipid-rafts-farnesyl-anchors-vs-palmitoyl-anchors
#19
Tao Zhang, Qichao Luo, Linlin Yang, Hualiang Jiang, Huaiyu Yang
Farnesyl (Far) and palmitoyl (Pal) anchors play important roles in the traffic of many lipidated proteins. Herein, we show the distinctive interactions and influences of the two lipid modifications on lipid rafts (LRs) and non-raft-like membranes using molecular dynamics simulations. Palmitoyl anchors behave in a more ordered fashion, pack tighter with the lipids of LRs and diffuse at a slower rate than farnesyl anchors in LRs. When interacting with non-raft-like membranes these two types of anchors become less ordered, pack more loosely with lipids, and diffuse at a higher rate...
June 5, 2017: European Biophysics Journal: EBJ
https://www.readbyqxmd.com/read/28584917/morphometry-and-microsurgical-anatomy-of-bochdalek-s-flower-basket-and-the-related-structures-of-the-cerebellopontine-angle
#20
Laszlo Barany, Gabor Baksa, Lajos Patonay, Oliver Ganslandt, Michael Buchfelder, Peter Kurucz
BACKGROUND: Bochdalek's flower basket (Bfb) is the distal part of the horizontal segment of the fourth ventricle's choroid plexus protruding through the lateral aperture (foramen of Luschka). The microsurgical anatomy of the cerebellopontine angle, fourth ventricle and its inner choroid plexus is well described in the literature, but only one radiological study has investigated the Bfb so far. The goal of the present study was to give an extensive morphometric analysis of the Bfb for the first time and discuss the surgically relevant anatomical aspects...
June 6, 2017: Acta Neurochirurgica
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