keyword
MENU ▼
Read by QxMD icon Read
search

Bristle

keyword
https://www.readbyqxmd.com/read/28077491/sphingosine-1-phosphate-lyase-deficiency-causes-charcot-marie-tooth-neuropathy
#1
Derek Atkinson, Jelena Nikodinovic Glumac, Bob Asselbergh, Biljana Ermanoska, David Blocquel, Regula Steiner, Alejandro Estrada-Cuzcano, Kristien Peeters, Tinne Ooms, Els De Vriendt, Xiang-Lei Yang, Thorsten Hornemann, Vedrana Milic Rasic, Albena Jordanova
OBJECTIVE: To identify the unknown genetic cause in a nuclear family with an axonal form of peripheral neuropathy and atypical disease course. METHODS: Detailed neurologic, electrophysiologic, and neuropathologic examinations of the patients were performed. Whole exome sequencing of both affected individuals was done. The effect of the identified sequence variations was investigated at cDNA and protein level in patient-derived lymphoblasts. The plasma sphingoid base profile was analyzed...
January 11, 2017: Neurology
https://www.readbyqxmd.com/read/28076469/scoring-clinical-signs-can-help-diagnose-canine-visceral-leishmaniasis-in-a-highly-endemic-area-in-brazil
#2
Kleverton Ribeiro da Silva, Vitor Rosa Ramos de Mendonça, Kellen Matuzzy Silva, Leopoldo Fabrício Marçal do Nascimento, Antonio Ferreira Mendes-Sousa, Flaviane Alves de Pinho, Manoel Barral-Netto, Aldina Maria Prado Barral, Maria do Socorro Pires E Cruz
Canine visceral leishmaniasis (CVL) diagnosis is still a challenge in endemic areas with limited diagnostic resources. This study proposes a score with the potential to distinguish positive CVL cases from negative ones. We studied 265 dogs that tested positive for CVL on ELISA and parasitological tests. A score ranging between 0 and 19 was recorded on the basis of clinical signs. Dogs with CVL had an overall higher positivity of the majority of clinical signs than did dogs without CVL or with ehrlichiosis. Clinical signs such as enlarged lymph nodes (83...
January 1, 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28071784/a-continued-role-for-signalling-functions-in-the-early-evolution-of-feathers
#3
Graeme D Ruxton, Walter S Persons, Philip J Currie
Persons and Currie (2015) argued against either flight, thermoregulation, or signalling as a functional benefit driving the earliest evolution of feathers; rather, they favoured simple feathers having an initial tactile sensory function, which changed to a thermoregulatory function as density increased. Here, we explore the relative merits of early simple feathers that may have originated as tactile sensors progressing instead towards a signalling, rather than (or in addition to), a thermoregulatory function...
January 10, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28060805/ptilagrostis-contracta-stipeae-poaceae-a-new-species-endemic-to-qinghai-tibet-plateau
#4
Zhong-Shuai Zhang, Ling-Lu Li, Wen-Li Chen
A new species, Ptilagrostis contracta, endemic to Qinghai-Tibet Plateau is described and illustrated. It is distinguished from other species in Ptilagrostis by having contracted panicles, 1-geniculate awns with hairy columns and scabrous bristles and evenly pubescent lemmas. Evidence from lemma epidermal pattern, cytology and molecular phylogenetic analyses based on the nuclear ITS sequence data confirm its systematic position in Ptilagrostis.
2017: PloS One
https://www.readbyqxmd.com/read/28035457/ant-lepidopteran-associations-along-african-forest-edges
#5
Alain Dejean, Frédéric Azémar, Michel Libert, Arthur Compin, Bruno Hérault, Jérôme Orivel, Thierry Bouyer, Bruno Corbara
Working along forest edges, we aimed to determine how some caterpillars can co-exist with territorially dominant arboreal ants (TDAAs) in tropical Africa. We recorded caterpillars from 22 lepidopteran species living in the presence of five TDAA species. Among the defoliator and/or nectarivorous caterpillars that live on tree foliage, the Pyralidae and Nymphalidae use their silk to protect themselves from ant attacks. The Notodontidae and lycaenid Polyommatinae and Theclinae live in direct contact with ants; the Theclinae even reward ants with abundant secretions from their Newcomer gland...
February 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28011160/piraguaencodes-a-zinc-finger-protein-required-for-development-in-drosophila
#6
Nestor O Nazario-Yepiz, Juan R Riesgo-Escovar
We isolated and characterized embryonic lethal mutations in piragua (prg). The prg locus encodes a protein with an amino terminus Zinc Finger-Associated-Domain (ZAD) and nine C2H2 zinc fingers (ZF). prg mRNA and protein expression during embryogenesis is dynamic with widespread maternal contribution, and subsequent expression in epithelial precursors. About a quarter of prg mutant embryos do not develop cuticle, and from those that do a small fraction have cuticular defects. Roughly half of prg mutants die during embryogenesis...
December 20, 2016: Mechanisms of Development
https://www.readbyqxmd.com/read/27995903/experimental-study-of-laminar-and-turbulent-boundary-layer-separation-control-of-shark-skin
#7
Farhana Afroz, Amy Lang, Maria Laura Habegger, Philip Motta, Robert Hueter
The Shortfin Mako shark (Isurus oxyrinchus) is a fast swimmer and has incredible turning agility, and has flexible scales known to bristle up to 50° in the flank regions. It is purported that this bristling capability of the scales may result in a unique pass flow control method to control flow separation and reduce drag. It appears that the scales have evolved to be only actuated when the flow over the body is reversed; thereby inducing a method of inhibiting flow reversal close to the surface. In addition, bristled scales form cavities which could induce boundary layer mixing and further assist in delaying flow separation...
December 20, 2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/27903629/bristles-reduce-the-force-required-to-fling-wings-apart-in-the-smallest-insects
#8
Shannon K Jones, Young J J Yun, Tyson L Hedrick, Boyce E Griffith, Laura A Miller
The smallest flying insects commonly possess wings with long bristles. Little quantitative information is available on the morphology of these bristles, and their functional importance remains a mystery. In this study, we (1) collected morphological data on the bristles of 23 species of Mymaridae by analyzing high-resolution photographs and (2) used the immersed boundary method to determine via numerical simulation whether bristled wings reduced the force required to fling the wings apart while still maintaining lift...
December 1, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27894418/discovery-of-methylfarnesoate-as-the-annelid-brain-hormone-reveals-an-ancient-role-of-sesquiterpenoids-in-reproduction
#9
Sven Schenk, Christian Krauditsch, Peter Frühauf, Christopher Gerner, Florian Raible
Animals require molecular signals to determine when to divert resources from somatic functions to reproduction. This decision is vital in animals that reproduce in an all-or-nothing mode, such as bristle worms: females committed to reproduction spend roughly half their body mass for yolk and egg production; following mass spawning, the parents die. An enigmatic brain hormone activity suppresses reproduction. We now identify this hormone as the sesquiterpenoid methylfarnesoate. Methylfarnesoate suppresses transcript levels of the yolk precursor Vitellogenin both in cell culture and in vivo, directly inhibiting a central energy-costly step of reproductive maturation...
November 29, 2016: ELife
https://www.readbyqxmd.com/read/27872578/morphology-and-morphogenesis-of-a-new-oxytrichid-ciliate-notohymena-limus-n-sp-ciliophora-oxytrichidae-from-delhi-india
#10
Ilams Naqvi, Renu Gupta, Seema Makhija, Ravi Toteja, Jeeva S Abraham, S Sripoorna, Hamed A El-Serehy, Fahad A Al-Misned
The morphology and morphogenesis of a new oxytrichid ciliate, Notohymena limus n. sp. were studied in vivo and after protargol impregnation. The new ciliate was isolated from the sewage sludge at Delhi Jal Board Sewage Treatment Plant located at Rithala, Delhi, India, using the non-flooded Petri dish method. N. limus n. sp. is characterized as follows: flexible dorsoventrally flattened ellipsoidal body; Notohymena-pattern undulating membranes; adoral zone of membranelles (AZM) occupied about 39% of the body length, and consists of around 26 membranelles; large and deep buccal cavity; colorless subpellicular granules present in groups and arranged around the bases of dorsal bristles; 4 macronuclear nodules; 2 micronuclei; 18 fronto-ventral-transverse (FVT) cirri in typical Oxytricha-pattern; 6 dorsal rows of bristles; 3 caudal cirri; about 16 right and 15 left marginal cirri; N...
November 2016: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/27849214/efficacy-of-two-soft-bristle-toothbrushes-in-plaque-removal-a-randomized-controlled-trial
#11
RANDOMIZED CONTROLLED TRIAL
Cassiano Kuchenbecker Rosing, Juliano Cavagni, Eduardo José Gaio, Francisco Wilker Mustafa Gomes Muniz, Harry Juan Rivera Oballe, Nicolle Ranzan, Stephanie Anagnostopoulos Friedrich, Raísa Maldonado Severo, Elizabeth Gittins, Bernal Stewart, Yun Po Zhang
The aim of this study was to compare the efficacy in supragingival plaque removal of two soft-bristle toothbrushes. Seventy volunteers were allocated randomly to the Colgate Slim Soft or Curaprox CS5460 toothbrush grourps. At baseline appointment, volunteers underwent plaque examination using the Rustogi Modification of the Navy Plaque Index. Under supervision, they then brushed their teeth for 1minute with their assigned toothbrushes and the plaque examination was repeated. Volunteers performed daily oral hygiene with their assigned toothbrush and a regular dentifrice provided by the researchers for 7 days...
November 10, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/27820687/influence-of-finishing-and-polishing-techniques-and-abrasion-on-transmittance-and-roughness-of-composite-resins
#12
Pma Carneiro, T M Ramos, C S de Azevedo, E de Lima, Shj de Souza, M L Turbino, P F Cesar, A B Matos
The aim of this study was to evaluate the influence of finishing and polishing systems and toothbrush abrasion on transmittance (T) and surface roughness (Ra) of three composite resins (Filtek Z350 XT, Tetric N-Ceram, and IPS Empress Direct). Eighteen resin disks (10 mm diameter × 2 mm thick) finished by polyester strips had initial surface smoothness recorded, representing phase 1 (P1). Specimens were divided into three groups (n=6) according to the finishing/polishing instrument used (OneGloss, TopGloss, and Sof-Lex) to compose phase 2 samples (P2)...
November 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27819207/autecology-feeding-preferences-and-reproductive-biology-of-chorthippus-glyptobothrus-vagans-eversmann-1848-orthoptera-gomphocerinae-in-mediterranean-ecosystems
#13
A M Cárdenas, P Gallardo, L Moyano, J J Presa
Chorthippus vagans is a common species of Gomphocerinae (Orthoptera) on the Iberian Peninsula. It is endangered in Central Europe where information about its ecological requirements is available; however, aspects of its biology are almost unknown in Mediterranean ecosystems, where it is widespread and common. The focus of this study was to determine how C. vagans adjusts its biology to environmental features of this ecosystem and to interpret how it may be affected by the ecological changes related to the re-vegetation programme linked to the construction of the Breña dam (SW Spain)...
November 7, 2016: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/27816487/arylalkylamine-n-acetyltransferase-1-gene-tcaanat1-is-required-for-cuticle-morphology-and-pigmentation-of-the-adult-red-flour-beetle-tribolium-castaneum
#14
Mi Young Noh, Bonwoo Koo, Karl J Kramer, Subbaratnam Muthukrishnan, Yasuyuki Arakane
In the insect cuticle tanning pathway (sclerotization and pigmentation), the enzyme arylalkylamine N-acetyltransferase (AANAT) catalyzes the acetylation of dopamine to form N-acetyldopamine (NADA), which is one of the major precursors for quinone-mediated tanning. In this study we characterized and investigated the function of TcAANAT1 in cuticle pigmentation of the red flour beetle, Tribolium castaneum. We isolated a full length TcAANAT1 cDNA that encodes a protein of 256 amino acid residues with a predicted GCN5-related acetyltransferase domain containing an acetyl-CoA binding motif...
November 2, 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27807168/a-defensive-kicking-behavior-in-response-to-mechanical-stimuli-mediated-by-drosophila-wing-margin-bristles
#15
Jiefu Li, Wei Zhang, Zhenhao Guo, Sophia Wu, Lily Yeh Jan, Yuh-Nung Jan
: Mechanosensation, one of the fastest sensory modalities, mediates diverse behaviors including those pertinent for survival. It is important to understand how mechanical stimuli trigger defensive behaviors. Here, we report that Drosophila melanogaster adult flies exhibit a kicking response against invading parasitic mites over their wing margin with ultrafast speed and high spatial precision. Mechanical stimuli that mimic the mites' movement evoke a similar kicking behavior. Further, we identified a TRPV channel, Nanchung, and a specific Nanchung-expressing neuron under each recurved bristle that forms an array along the wing margin as being essential sensory components for this behavior...
November 2, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27796575/bristle-splaying-and-its-effect-on-pre-existing-gingival-recession-a-12-month-randomized-controlled-trial
#16
C Graetz, A Plaumann, N Heinevetter, S Sälzer, J Bielfeldt, C E Dörfer
OBJECTIVE: The link between bristle splaying and gingival recession is unclear. METHODS: In a 12-month, parallel group, randomized, controlled clinical trial, 110 systemically healthy participants with pre-existing gingival recessions (pre-GR) were assigned to brush their teeth with either a manual (MT) or a powered toothbrush (PT). Every 3 months, toothbrushes and brush heads were replaced. Wear was measured using the Bristle-Splaying-Index (BSI), matched between groups and correlated to the change of pre-GR...
October 31, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27783364/scanning-electron-microscopy-study-of-the-antennal-sensilla-of-monema-flavescens-walker-lepidoptera-limacodidae
#17
S Yang, H Liu, J T Zhang, J Liu, H Zheng, Y Ren
Monema flavescens Walker (Lepidoptera: Limacodidae) is a serious polyphagous defoliator. Using scanning electron microscopy, the external morphology of the antennal sensilla of this pest was examined for a better understanding of the mechanisms of insect-insect and insect-plant chemical communications. The antennae of M. flavescens were filiform in shape, and 11 morphological types of sensilla were found in both sexes. Six types of likely chemosensory sensilla were identified: uniporous sensilla chaetica, multiporous sensilla trichodea, and four types of multiporous sensilla basiconica...
October 25, 2016: Neotropical Entomology
https://www.readbyqxmd.com/read/27766412/reflectance-based-determination-of-age-and-species-of-blowfly-puparia
#18
Sasha C Voss, Paola Magni, Ian Dadour, Christian Nansen
Forensic entomology is primarily concerned with the estimation of time since death and involves determination of the age of immature insects colonising decomposing remains. Accurate age determination of puparia is usually accomplished by dissection, which means destructive sampling of evidence. As part of improving abilities to correctly identify species and developmental age, it is highly desirable to have available non-destructive methods. In this study, we acquired external hyperspectral imaging (HSI) data (77 spectral bands, 389-892 nm) from the dorsal and ventral sides of individual puparia of two species of blowfly (Diptera: Calliphoridae), Calliphora dubia Macquart 1855 and Chrysomya rufifacies Macquart 1842...
January 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27757550/efficacy-of-various-side-to-side-toothbrushes-and-impact-of-brushing-parameters-on-noncontact-biofilm-removal-in-an-interdental-space-model
#19
Julia C Schmidt, Monika Astasov-Frauenhoffer, Tuomas Waltimo, Roland Weiger, Clemens Walter
OBJECTIVES: The objective of this study was to evaluate the efficacy of four different side-to-side toothbrushes and the impact of various brushing parameters on noncontact biofilm removal in an adjustable interdental space model. MATERIALS AND METHODS: A three-species biofilm, consisting of Porphyromonas gingivalis, Fusobacterium nucleatum, and Streptococcus sanguinis, was formed in vitro on protein-coated titanium disks using a flow chamber combined with a static biofilm growth model...
October 19, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27713501/in-vivo-analysis-of-internal-ribosome-entry-at-the-hairless-locus-by-genome-engineering-in-drosophila
#20
Thomas K Smylla, Anette Preiss, Dieter Maier
Cell communication in metazoans requires the highly conserved Notch signaling pathway, which is subjected to strict regulation of both activation and silencing. In Drosophila melanogaster, silencing involves the assembly of a repressor complex by Hairless (H) on Notch target gene promoters. We previously found an in-frame internal ribosome entry site in the full length H transcript resulting in two H protein isoforms (H(p120) and H(p150)). Hence, H may repress Notch signalling activity in situations where cap-dependent translation is inhibited...
October 7, 2016: Scientific Reports
keyword
keyword
109024
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"