keyword
MENU ▼
Read by QxMD icon Read
search

Functional morphology

keyword
https://www.readbyqxmd.com/read/28545163/coccygeal-body-revisited-an-immunohistochemical-study-using-donated-elderly-cadavers
#1
Zhe Wu Jin, Kwang Ho Cho, Hyung Suk Jang, Gen Murakami, Jose Francisco Rodríguez-Vázquez, Masahito Yamamoto, Shin-Ichi Abe
To describe the normal anatomy and histology of the adult coccygeal body (CB) and to discuss about the origin and function. Using immunohistochemistry, we examined 29 CBs found in 32 elderly donated cadavers without macroscopic pathology in the pelvis. The CB was usually located in or near the anococcygeal ligaments. It was almost always composed of multiple masses or nodules of round glomus cells (smooth muscle actin, or SMA++). However, the CB sometimes contained abundant dilated veins with scattered glomus cells...
May 25, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28545115/network-architecture-associated-with-the-highly-specialized-hindlimb-of-frogs
#2
Daniel Andrés Dos Santos, Jéssica Fratani, María Laura Ponssa, Virginia Abdala
Network analyses have been increasingly used in the context of comparative vertebrate morphology. The structural units of the vertebrate body are treated as discrete elements (nodes) of a network, whose interactions at their physical contacts (links) determine the phenotypic modules. Here, we use the network approach to study the organization of the locomotor system underlying the hindlimb of frogs. Nodes correspond to fibrous knots, skeletal and muscular units. Edges encode the ligamentous and monoaxial tendinous connections in addition to joints...
2017: PloS One
https://www.readbyqxmd.com/read/28544986/morphometric-characteristics-of-neutrophils-stimulated-by-adhesion-and-hypochlorite
#3
Tatsiana Kuznetsova, Tatsiana Kulahava, Ivan Zholnerevich, Nadezda Amaegberi, Galina Semenkova, Oleg Shadyro, Juergen Arnhold
The aim of this work was to compare cell form, size and volume as well as the locomotor activity of polymorphonuclear leukocytes (PMNLs) stimulated by adhesion to glass and exposed to hypochlorous acid at non-toxic dose. After 20min of adhesion to a glass surface, volume, cell surface area and projection area of PMNLs were equaled to 143.1±21.4μm(3), 288.8±28.8μm(2) and 248.3±32.3μm(2), respectively. Projection area of PMNLs exposed to NaOCl was noticeably enlarged as compared with control samples. The cell volume of 20min adherent cells exposed to NaOCl was enlarged in comparison with both control cells and 5min adhered exposed to NaOCl cells...
May 22, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28544660/altered-secretion-of-sertoli-cells-hormones-in-2-year-old-prepubertal-cryptorchid-boys-a-cross-sectional-study
#4
S M Hamdi, T Almont, P Galinier, R Mieusset, P Thonneau
In cryptorchid boys, failures in germ cell development have been clearly established. Some studies reported some abnormalities in Sertoli cells morphology but the results regarding their endocrine secretion remain controversial. To compare testicular hormone levels in young boys with and without cryptorchidism, we performed a cross-sectional hospital-based study. From surgery appointment records, we identified a case group of boys with unilateral or bilateral cryptorchidism and a control group undergoing dental care, minor osteoarticular or dermal surgery...
May 23, 2017: Andrology
https://www.readbyqxmd.com/read/28544612/ecology-adaptation-and-function-of-methane-sulfidic-spring-water-biofilm-microorganisms-including-a-strain-of-anaerobic-fungus-mucor-hiemalis
#5
Enamul Hoque, Johannes Fritscher
Ecological aspects, adaptation, and some functions of a special biofilm and its unique key anaerobic fungus Mucor hiemalis strain EH11 isolated from a pristine spring (Künzing, Bavaria, Germany) are described. The spring's pure nature is characterized by, for example, bubbling methane, marine-salinity, mild hydrothermal (~19.1°C), sulfidic, and reductive-anoxic (Eh : -241 to -253 mV, O2 : ≤ 0.1 mg/L) conditions. It is geoecologically located at the border zone between Bavarian Forest (crystalline rocky mountains) and the moor-like Danube River valley, where geological displacements bring the spring's water from the deeper layers of former marine sources up to the surface...
May 24, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28544592/direct-influence-of-titanium-and-zirconia-particles-on-the-morphology-and-functionality-of-mature-human-osteoclasts
#6
Juliane Pasold, Jana Markhoff, Jenny Tillmann, Martin Krogull, Phillip Pisowocki, Rainer Bader
Within the last ten years of biomedical implants, the focus is increasingly on bioceramics, specifically on zirconia (ZrO2 ). Hence, we analyzed the impact of zirconia particles in comparison to titanium (cpTi) particles on mature human osteoclasts (OCs) as little is known about the direct effect of wear particles on mature OCs and their role in the osteolytic process during aseptic endoprosthesis loosening. Changes in cell morphology and functionality of OCs incubated with particles in different concentrations were investigated...
May 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28544454/flexible-nanowire-cluster-as-a-wearable-colorimetric-humidity-sensor
#7
Zhiqiang Wei, Zhang-Kai Zhou, Qiuyu Li, Jiancai Xue, Andrea Di Falco, Zhongjian Yang, Jianhua Zhou, Xuehua Wang
Wearable plasmonic devices combine the advantages of high flexibility, ultrathinness, light weight, and excellent integration with the optical benefits mediated by plasmon-enhanced electric fields. However, two obstacles severely hinder further developments and applications of a wearable plasmonic device. One is the lack of efficient approach to obtaining devices with robust antimotion-interference property, i.e., the devices can work independently on the morphology changes of their working structures caused by arbitrary wearing conditions...
May 22, 2017: Small
https://www.readbyqxmd.com/read/28544255/a-new-polyoxometalate-pom-based-composite-%C3%AF-fabrication-through-pom-assisted-polymerization-of-dopamine-and-properties-as-anode-materials-for-high-performance-lithium-ion-battery
#8
Yan-Hong Ding, Jun Peng, Shifa-Ullah Khan, Yue Yuan
Organic substrates are indispensable to fabricate multi-functional polyoxometalate (POM)-based composites for various application fields. A new Molybdovanadophosphoric heteropolyacid (PMo10V2)-based polydopamine (PDA) composite (PMo10V2/PDA) has been firstly synthesized through a facile in-situ polymerization method under hydrothermal conditions without adding extra buffer solution. The obtained PMo10V2/PDA composite shows homogeneous microsphere morphology. By utilizing the adhesive ability of PDA, the composite can be used as an anode material without additional binder for rechargeable lithium ion batteries...
May 24, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28544245/ghrelin-receptor-inverse-agonists-as-a-novel-therapeutic-approach-against-obesity-related-metabolic-disease
#9
Kathrin Abegg, Lara Bernasconi, Melanie Hutter, Lynda Whiting, Claudio Pietra, Claudio Giuliano, Thomas A Lutz, Thomas Riediger
AIMS: Ghrelin is implicated in the control of energy balance and glucose homeostasis. The ghrelin receptor exhibits ligand independent constitutive activity, which can be pharmacologically exploited to induce inverse ghrelin actions. Since ghrelin receptor inverse agonists (GHSR-IA) might be effective for the treatment of obesity-related metabolic disease, we tested two novel synthetic compounds GHSR-IA1 and GHSR-IA2. MATERIALS AND METHODS: In functional cell assays, electrophysiogical and immunohistochemical experiments, we demonstrated inverse agonist activity for GHSR-IA1 and GHSR-IA2...
May 24, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28544124/secondary-structure-driven-self-assembly-of-reactive-polypept-o-ides-controlling-size-shape-and-function-of-core-cross-linked-nanostructures
#10
Kristina Klinker, Olga Schäfer, David Huesmann, Tobias Bauer, Leon Capelôa, Lydia Braun, Natascha Stergiou, Meike Schinnerer, Anjaneyulu Dirisala, Kanjiro Miyata, Kensuke Osada, Horacio Cabral, Kazunori Kataoka, Matthias Barz
Achieving precise control over morphology and function of polymeric nanoparticles during self-assembly remains a challenge in material as well as bio-medical sciences, especially when all these properties can be controlled independently. Herein, we report on nanostructures derived from amphiphilic block copolypept(o)ides by secondary structure directed self-assembly, presenting a strategy to adjust core polarity separately from particle preparation in a bio-reversible fashion. The peptide-inherent process of secondary structure-formation allows for the synthesis of spherical and worm-like core cross-linked architectures from the same block copolymer, introducing a simple yet powerful approach to versatile peptide-based nanoparticles...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544072/morphological-control-of-heteroleptic-cis-and-trans-pd2-l2-l-2-cages
#11
Witold M Bloch, Julian J Holstein, Wolf Hiller, Guido H Clever
Control over the integrative self-sorting of metallo-supramolecular assemblies opens up possibilities for introducing increased complexity and function into a single self-assembled architecture. Herein, the relationship between the geometry of three ligand components and morphology of three self-sorted heteroleptic [Pd2 L2 L'2 ](4+) cages is examined. Pd-mediated assembly of two bis-monodentate pyridyl ligands with native bite angles of 75° and 120° affords a cis-[Pd2 L2 L'2 ](4+) cage while the same reaction with two ligands with bite angles of 75° and 60° gives an unprecedented, self-penetrating structural motif; a trans-[Pd2 (anti-L)2 L'2 ](4+) heteroleptic cage with a "doubly bridged figure eight" topology...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28543804/au-i-%C3%A2-%C3%A2-%C3%A2-au-i-interaction-assisted-host-guest-interactions-and-stimuli-responsive-self-assembly-in-tetranuclear-alkynylgold-i-calix-4-arene-based-isocyanide-complexes
#12
Anlea Chu, Franky Ka-Wah Hau, Vivian W W Yam
Multi-stimuli-responsive tetranuclear gold(I) complexes have been prepared based on a tetra(alkynyl)calix[4]arene framework, with incorporation of a series of isocyanide ligands of tunable hydrophilicity. This class of complexes is found to exhibit high sensitivity towards group IIIA metal ions especially indium(III) ions. Drastic electronic absorption and emission changes have been observed, which could be attributed to the formation of Au(I)···Au(I) interactions during the binding event. Solvent-induced self-aggregation has also been observed upon changing the solvent environment to a more polar medium, with the formation of nanoaggregates and the turning on of the aurophilic interactions, leading to interesting luminescence and morphological changes...
May 21, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28543786/immunohistochemical-colocalization-of-g-protein-alpha-subunits-and-5-ht-in-the-rectal-gland-of-the-cartilaginous-fish-scyliorhinus-canicula
#13
E R Lauriano, S Pergolizzi, J Gangemi, M Kuciel, G Capillo, M Aragona, C Faggio
Serotonin [5-hydroxytryptamine (5-HT)] is an important neuromodulator involved in a wide range of physiological functions. The effects of serotonin are mediated by an extended family of receptors coupled to multiple heterotrimeric G-proteins, associated with cellular membrane. G proteins connect receptors to effectors and thus trigger intracellular signaling pathways. These cellular processes several regulate systemic functions such as embryonic development, gonadal development, learning and memory, and organismal homeostasis...
May 22, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28543723/neuromuscular-junctions-nmjs-ultrastructural-analysis-and-nicotinic-acetylcholine-receptor-nachr-subunit-mrna-expression-in-offspring-subjected-to-protein-restriction-throughout-pregnancy
#14
Paula Aiello Tomé de Souza Castro, Ludimila Canuto Faccioni, Patrícia Aline Boer, Robson Francisco Carvalho, Selma Maria Michelin Matheus, Maeli Dal-Pai-Silva
Protein restriction during gestation can alter the skeletal muscle phenotype of offspring; however, little is known with regard to whether this also affects the neuromuscular junction (NMJ), as muscle phenotype maintenance depends upon NMJ functional integrity. This study aimed to evaluate the effects of a low protein (6%) intake by dams throughout gestation on male offspring NMJ morphology and nicotinic acetylcholine receptor (nAChR) α1, γ and ε subunit expression in the soleus (SOL) and extensor digitorum longus (EDL) muscles...
May 25, 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/28543060/nogo-b-is-the-major-form-of-nogo-at-the-floor-plate-and-likely-mediates-crossing-of-commissural-axons-in-the-mouse-spinal-cord
#15
Liqing Wang, Chao Yu, Jun Wang, Peggy Leung, Ding Ma, Hui Zhao, Jeremy S H Taylor, Sun-On Chan
Using Nogo antibodies with defined binding specificity, Nogo-B, but not Nogo-A, was localized on radial glia in the floor plate of mouse embryos. The presence of Nogo-B was confirmed in Nogo-A knockout mice. In explant cultures of embryonic day (E) 11 and E12 spinal cord, blocking of NgR function with antagonist peptide NEP1-40 reduced the crossing of newly arrived commissural axons, resulting in an accumulation of growth cones in the floor plate. Analysis of growth cone morphology demonstrated an increase in size of growth cones in the floor plate after peptide treatment, which was not detected in axons growing towards the midline...
May 22, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28543020/morphological-and-functional-aspects-of-the-epidermis-of-the-sea-lamprey-petromyzon-marinus-throughout-development
#16
R Rodríguez-Alonso, M Megías, M A Pombal, P Molist
The development of the epidermis of sea lamprey Petromyzon marinus along the whole life cycle was studied using conventional staining techniques and lectin histochemistry. The epidermis undergoes variations in morphology and thickness throughout development. The simple cuboidal epithelium found in the epidermis of prolarvae becomes stratified cubic in the adult by increasing the number of cell layers. The cuticle thickness undergoes a steady increase during the larval period. There are changes in the glycoconjugate composition of the three main cell types of the P...
May 22, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28542878/foot-shape-in-arboreal-birds-two-morphological-patterns-for-the-same-pincer-like-tool
#17
Anick Abourachid, Anne-Claire Fabre, Raphaël Cornette, Elizabeth Höfling
The feet are the only contact between the body and the substrate in limbed animals and as such they provide a crucial interface between the animal and its environment. This is especially true for bipedal and arboreal species living in a complex three-dimensional environment that likely induces strong selection on foot morphology. In birds, foot morphology is highly variable, with different orientations of the toes, making it a good model for the study of the role of functional, developmental, and phylogenetic constraints in the evolution of phenotypic diversity...
May 23, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28542839/how-whales-used-to-filter-exceptionally-preserved-baleen-in-a-miocene-cetotheriid
#18
Felix G Marx, Alberto Collareta, Anna Gioncada, Klaas Post, Olivier Lambert, Elena Bonaccorsi, Mario Urbina, Giovanni Bianucci
Baleen is a comb-like structure that enables mysticete whales to bulk feed on vast quantities of small prey, and ultimately allowed them to become the largest animals on Earth. Because baleen rarely fossilises, extremely little is known about its evolution, structure and function outside the living families. Here we describe, for the first time, the exceptionally preserved baleen apparatus of an entirely extinct mysticete morphotype: the Late Miocene cetotheriid, Piscobalaena nana, from the Pisco Formation of Peru...
May 24, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28542570/evolutionary-morphology-in-shape-and-size-of-haptoral-anchors-in-14-ligophorus-spp-monogenea-dactylogyridae
#19
Abril Rodríguez-González, Volodimir Sarabeev, Juan Antonio Balbuena
The search for phylogenetic signal in morphological traits using geometric morphometrics represents a powerful approach to estimate the relative weights of convergence and shared evolutionary history in shaping organismal form. We assessed phylogenetic signal in the form of ventral and dorsal haptoral anchors of 14 species of Ligophorus occurring on grey mullets (Osteichthyes: Mugilidae) from the Mediterranean, the Black Sea and the Sea of Azov. The phylogenetic relationships among these species were mapped onto the morphospaces of shape and size of dorsal and ventral anchors and two different tests were applied to establish whether the spatial positions in the morphospace were dictated by chance...
2017: PloS One
https://www.readbyqxmd.com/read/28542468/alveoli-teeth-and-tooth-loss-understanding-the-homology-of-internal-mandibular-structures-in-mysticete-cetaceans
#20
Carlos Mauricio Peredo, Nicholas D Pyenson, Mark D Uhen, Christopher D Marshall
The evolution of filter feeding in baleen whales (Mysticeti) facilitated a wide range of ecological diversity and extreme gigantism. The innovation of filter feeding evolved in a shift from a mineralized upper and lower dentition in stem mysticetes to keratinous baleen plates that hang only from the roof of the mouth in extant species, which are all edentulous as adults. While all extant mysticetes are born with a mandible lacking a specialized feeding structure (i.e., baleen), the bony surface retains small foramina with elongated sulci that often merge together in what has been termed the alveolar gutter...
2017: PloS One
keyword
keyword
49631
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"