bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparison of eye morphology and retinal topography in two species of new world vultures (Aves: Cathartidae)
Authors: Lisney Thomas J. , Stecyk Karyn , Kolominsky Jeffrey , Graves Gary R. , Wylie Douglas R. , Iwaniuk Andrew N. 
Published: June 2014

ABSTRACTVultures are highly reliant on their sensory systems for the rapid detection and localization of carrion before other scavengers can exploit the resource. In this study, we compared eye morphology and retinal topography in two species of New World vultures (Cathartidae), turkey vultures (Cathartes aura), with a highly developed olfactory sense, and black vultures (Coragyps atratus), with a less developed sense of olfaction. We found that eye size relative to body mass was the same in both species, but that black vultures have larger corneas relative to eye size than turkey vultures. However, the overall retinal topography, the total number of cells in the retinal ganglion cell layer, peak and average cell densities, cell soma area frequency distributions, and the theoretical peak anatomical spatial resolving power were the same in both species. This suggests that the visual systems of these two species are similar and that vision plays an equally important role in the biology of both species, despite the apparently greater reliance on olfaction for finding carrion in turkey vultures. Anat Rec, 296:1954–1970, 2013. © 2013 Wiley Periodicals, Inc.
Pregabalin Alters Nociceptive Behavior and Expression Level of P2X3 Receptor in the Spinal Dorsal Horn in a Rat Model Induced by Chronic Compression of the Dorsal Root Ganglion
Authors: Yu Jianfeng , Fu Peng , Zhang Yan , Liu Shuzhen , Cui Donghong 
Published: June 2014

ABSTRACTP2X3 receptors are present in the spinal dorsal horn (SDH) and play an essential role in the regulation of nociception and pain. Pregabalin (PGB) has been used as a new antiepileptic drug in the treatment of neuropathic pain. However, it is unclear whether PGB‐induced analgesia was associated with the P2X3 receptor in SDH. Here, rats were randomly divided into four groups (n = 12 per group), including 2 sham operation groups, which was treated by normal saline (Sham + NS group) or PGB (Sham + PGB group), other 2 groups with chronic compression of the dorsal root ganglion, a normal saline‐treated CCD group (CCD+NS group), and a PGB‐treated CCD group (CCD + PGB group). A rat model of neuropathic pain was used by compressing the right L4 and L5 dorsal root ganglia. Each group was evaluated using the mechanical withdrawal threshold (MWT). The mRNA and protein levels of the P2X3 receptor in the ipsilateral SDH were measured by RT‐PCR, western blot, and immunofluorescence on 14 day after CCD operation. CCD rats showed the highest mechanical hyperalgesia and the lowest pain threshold in the four groups. Simultaneously, CCD rats showed higher P2X3 mRNA and protein expression in ipsilateral side of the SDH than the sham operation rats. However, the MWT was increased and expression of P2X3 mRNA and protein in the ipsilateral SDH in CCD rats was decreased 3 days after PGB treatment. Thus, PGB may partially reverse mechanical hyperalgesia in CCD rats by inhibiting P2X3 receptor expression in the ipsilateral SDH. Anat Rec, 296:1907–1912, 2013. © 2013 Wiley Periodicals, Inc.
Rapid Interaction of Helicobacter pylori with Microvilli of the Polar Human Gastric Epithelial Cell Line NCI‐N87
Authors: Diesing Anne‐Kathrin , Nossol Constanze , Faber‐Zuschratter Heidi , Zuschratter Werner , Renner Lydia , Sokolova Olga , Naumann Michael , Rothkötter Hermann‐Josef 
Published: June 2014

ABSTRACTInfection with Helicobacter pylori results often in chronic gastritis, gastric ulcers or even gastric tumor development. Little is known about the initial interaction between gastric epithelial cells and H. pylori. The aim of the present study was to analyze the initial host contact to the bacteria. Monolayers of the human gastric epithelial cell line NCI‐N87 grown on porous membranes were used and the apical side of the epithelium was exposed to the H. pylori wild‐type strain P1 for 1 hr. Many epithelial cells were colonized by bacteria within the period of 60 min. Using scanning electron microscopy we detected that the bacteria were in close contact with the epithelia via microvilli. Further, transmission electron microscopy of the contact sites revealed no difference in the morphology of the microvilli in comparison to those not attached to the bacteria. The present study demonstrates the importance of microvilli on apical epithelial cells during the initial contact of the host by colonizing H. pylori. Anat Rec, 296:1800–1805, 2013. © 2013 The Authors. The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology published by Wiley Periodicals, Inc. on behalf of the American Association of Anatomists.
Tissue Engineering in the Vasculature
Authors: Naito Yuji , Rocco Kevin , Kurobe Hirotsugu , Maxfield Mark , Breuer Christopher , Shinoka Toshiharu 
Published: June 2014

ABSTRACTTissue engineering holds great promise to address complications and limitations encountered with the use of traditional prosthetic materials, such as thrombogenicity, infection, and future degeneration which represent the major morbidity and mortality after device implant surgery. The general concept of tissue engineering consists of three main components: a scaffold material, a cell type for seeding the scaffold, and biochemical, physio‐chemical signaling and remodeling process. This remodeling process is guided by cell signals derived from both seeded cells and host inflammatory cells that infiltrate the scaffold and deposit extracellular matrix, forming the neotissue. Vascular tissue engineering is at the forefront in the translation of this technology to clinical practice, as tissue engineered vascular grafts (TEVGs) have now been successfully implanted in children with congenital heart disease. In this report, we review the history, advances, and state of the art in TEVGs. Anat Rec, 297:83–97. 2014. © 2013 Wiley Periodicals, Inc.
Osteological Histology of the Pan‐Alcidae (Aves, Charadriiformes): Correlates of Wing‐Propelled Diving and Flightlessness
Authors: Smith N. Adam , Clarke Julia A. 
Published: June 2014

ABSTRACTAlthough studies of osteological morphology, gross myology, myological histology, neuroanatomy, and wing‐scaling have all documented anatomical modifications associated with wing‐propelled diving, the osteohistological study of this highly derived method of locomotion has been limited to penguins. Herein we present the first osteohistological study of the derived forelimbs and hind limbs of wing‐propelled diving Pan‐Alcidae (Aves, Charadriiformes). In addition to detailing differences between wing‐propelled diving charadriiforms and nondiving charadriiforms, microstructural modifications to the humeri, ulnae and femora of extinct flightless pan‐alcids are contrasted with those of volant alcids. Histological thin‐sections of four species of pan‐alcids (Alca torda, †Alca grandis, †Pinguinus impennis, †Mancalla cedrosensis) and one outgroup charadriiform (Stercorarius longicaudus) were compared. The forelimb bones of wing‐propelled diving charadriiforms were found to have significantly thicker (∼22%) cortical bone walls. Additionally, as in penguins, the forelimbs of flightless pan‐alcids are found to be osteosclerotic. However, unlike the pattern documented in penguins that display thickened cortices in both forelimbs and hind limbs, the forelimb and hind limb elements of pan‐alcids display contrasting microstructural morphologies with thickened forelimb cortices and relatively thinner femoral cortices. Additionally, the identification of medullary bone in the sampled †Pinguinus impennisspecimen suggests that further osteohistological investigation could provide an answer to longstanding questions regarding sexual dimorphism of Great Auks. Finally, these results suggest that it is possible to discern volant from flightless wing‐propelled divers from fragmentary fossil remains. Anat Rec, 297:188–199, 2014. © 2013 Wiley Periodicals, Inc.
Not Enough Skeletons in the Closet: Collections‐Based Anatomical Research in an Age of Conservation Conscience
Authors: Bell Christopher J. , Mead Jim I. 
Published: June 2014

AbstractThe emergence of new technologies and improved computing power helped to introduce a renewed vitality in morphological research in recent decades. This is especially apparent in the new advances made in understanding the evolutionary morphology of the skeletal system in extinct and extant squamate reptiles. The new data generated as a result of the recent increase in attention are relevant not only for systematic analyses but also are valuable in their own right for contributing to holistic perspectives on organismal evolution, mosaic evolution in the rates of change in different anatomical systems, and broader patterns of macroevolution. A global community of morphological researchers now can share data through online digital collections, but opportunities for continued advance are hindered because we lack even basic data on patterns of variation of the skeletal system for virtually all squamate lineages. Most work on skeletal morphology of squamates is based on a sample size of n = 1; this is an especially noticeable phenomenon for studies relying on X‐ray computed tomography technology. We need new collections of skeletal specimens, both material and digital, and new approaches to the study of skeletal morphology. Promising areas for continued research include the recent focus on skeletal elements not traditionally included in morphological studies (especially systematic analyses based upon morphological data) and efforts to elucidate patterns of variation and phylogenetically informative features of disarticulated skeletal elements. Anat Rec, 297:344–348, 2014. © 2014 Wiley Periodicals, Inc.
Comparative Anatomy of the Lower Jaw and Dentition of Pseudopus apodus and the Interrelationships of Species of Subfamily Anguinae (Anguimorpha, Anguidae)
Authors: Klembara Jozef , Hain Miroslav , Dobiašová Karolína 
Published: June 2014

ABSTRACTThe morphology of the lower jaw and teeth of the legless lizard Pseudopus apodus (Anguimorpha, Anguidae, Anguinae) from Eurasia are described in detail and compared with those of other species of the subfamily Anguinae. The lower jaw anatomy of Pseudopus, especially the dentary and teeth, clearly differs from the genera Ophisaurus and Anguis. Even so, Ophisaurus is largely uniform in its lower jaw morphology across species. The teeth of North American Ophisaurus are slender cylinders, the shafts are mesiodistally compressed and bulge lingually; the apices are curved lingually and posteriorly and have weakly developed cutting edges. Southeast Asian and North African Ophisaurus present conical teeth, with broadened bases, apices more distinctly curved lingually and posteriorly, and cutting edges that are distinctly developed. The lingual surfaces of the tooth apices are striated in Ophisaurus and Pseudopus. The lower jaw of Ophisaurus is in many respects similar to that in Anguis, however, the teeth of Anguis are longer and markedly curved posteriorly. The result of the phylogenetic analysis rendered six equally parsimonious trees. Anguis appears in three alternative positions, as the sister taxon to a clade formed by Ophisaurus and Pseudopus, as the sister taxon of Ophisaurus, or as forming a clade with Ophisaurus which is the sister group to Pseudopus. Anat Rec, 297:516–544, 2014. © 2014 Wiley Periodicals, Inc.
A New Miniaturized Lizard From the Late Eocene of France and Spain
Authors: Bolet Arnau , Augé Marc 
Published: June 2014

AbstractWe report here a new lizard genus and species shared by two late Eocene localities situated at both versants of the present Pyrenees (South‐Western Europe), one located in France (Escamps, MP19), and the other in Catalonia, Spain (Sossís, MP17a). The recovered specimens are remarkable because of their small size and peculiar morphology. Features of the dentary are interpreted as adaptations to a fossorial or semi‐fossorial lifestyle, although such modifications obscure the exact phylogenetic relationships of the new taxon. We suggest that it might represent a further example of scincoid lizard that independently achieved adaptations for burrowing or surface‐dwelling. This taxon reinforces the hypotheses that link the Southern Pyrenean assemblages to those from France rather than to those of the rest of the Iberian Peninsula, which are supposed to be somehow isolated and endemic to a certain degree during the middle and late Eocene, forming part of the so‐called Western Iberian Bioprovince. Anat Rec, 297:505–515, 2014. © 2014 Wiley Periodicals, Inc.
The Inferior Olive of the C57BL/6J Mouse: A Chemoarchitectonic Study
Authors: Yu You , Fu Yuhong , Watson Charles 
Published: June 2014

ABSTRACTWe have used the histochemical and immunohistochemical staining methods and maps of gene expression to analyze the structure of the inferior olive of the C57BL mouse. As in other mammals, the inferior olive of the C57BL mouse contains three major nuclei, the medial nucleus, the principal nucleus, and the dorsal nucleus. The medial nucleus can be divided into a rostral medial nucleus and a more complex caudal part, which is formed by subnuclei C, B, A, the cap of Kooy, and the beta subnucleus. The principal nucleus includes the major principal nucleus and the arcuate subnucleus. Most of the inferior olive neurons are small to medium size, the smallest of which are found in the arcuate subnucleus. Calbindin and the vesicular glutamate transporter 2 gene are expressed in nearly all inferior olive neurons, but acetlycholinesterase, glutamate decarboxylase 1 gene, cocaine‐ and amphetamine‐regulated transcript protein prepropeptide gene, galanin gene, and calretinin are selectively expressed within different subnuclei. These findings are consistent with a pattern of extensive functional differentiation among the neuron groups of the inferior olive. Anat Rec, 297:289–300, 2014. © 2014 Wiley Periodicals, Inc.
Morphological Analysis of Lymph Nodes in Odontocetes From North and Northeast Coast of Brazil
Authors: Silva Fernanda Menezes De Oliveira E , Guimarães Juliana Plácido , Vergara‐parente Jociery Einhardt , Carvalho Vitor Luz , De Meirelles Ana Carolina Oliveira , Marmontel Miriam , Ferrão Juliana Shimara Pires , Miglino Maria Angelica 
Published: June 2014

ABSTRACTThe morphology and location of lymph nodes from seven species of Odontocetes, of both sexes and different age groups, were described. All animals were derived from stranding events along the North and Northeastern coasts of Brazil. After the identification of lymph nodesin situ, tissue samples were analyzed for light and electron microscopy. Vascular volume density (VVD) and vascular length density (VLD) were evaluated in the mesenteric lymph nodes. Lymph nodes occurred as solitary nodules or in groups, varying in shape and size. In addition to using the nomenclature recommended byNomina Anatomica Veterinaria, new nomenclatures were suggested based on the lymph nodes topography. Lymph nodes were covered by a highly vascularized and innervated capsule of dense connective tissue, below which muscle fibers were observed, inconsistently, in all studied species. There was no difference in VLD among different age groups. However, VVD was higher in adults. Lymph nodes parenchyma was divided into an outer cortex, containing lymph nodules and germinal centers; a paracortical region, transition zone with dense lymphoid tissue; and an inner medulla, composed of small irregular cords of lymphatic tissue, blood vessels, and diffuse lymphoid tissue. Abundant collagen fibers were observed around arteries and arterioles. Germinal centers were more evident and developed in calves and young animals, being more discrete and sparse in adults. The morphology of lymph nodes in Odontocetes was typical of that observed in other terrestrial mammals. However, new groups of lymph nodes were described for seven species occurring in the Brazilian coast. Anat Rec, 297:939–948, 2014. © 2014 Wiley Periodicals, Inc.
Characterization of Nasal Cavity‐Associated Lymphoid Tissue in Ducks
Authors: Kang Haihong , Yan Mengfei , Yu Qinghua , Yang Qian 
Published: June 2014

ABSTRACTThe nasal mucosa is involved in immune defense, as it is the first barrier for pathogens entering the body through the respiratory tract. The nasal cavity‐associated lymphoid tissue (NALT), which is found in the mucosa of the nasal cavity, is considered to be the main mucosal immune inductive site in the upper respiratory tract. NALT has been found in humans and many mammals, which contributes to local and systemic immune responses after intranasal vaccination. However, there are very few data on NALT in avian species, especially waterfowl. For this study, histological sections of the nasal cavities of Cherry Valley ducks were used to examine the anatomical location and histological characteristics of NALT. The results showed that several lymphoid aggregates are present in the ventral wall of the nasal cavity near the choanal cleft, whereas several more lymphoid aggregates were located on both sides of the nasal septum. In addition, randomly distributed intraepithelial lymphocytes and isolated lymphoid follicles were observed in the regio respiratoria of the nasal cavity. There were also a few lymphoid aggregates located in the lamina propria of the regio vestibularis, which was covered with a stratified squamous epithelium. This study focused on the anatomic and histological characteristics of the nasal cavity of the duck and performed a systemic overview of NALT. This will be beneficial for further understanding of immune mechanisms after nasal vaccination and the development of effective nasal vaccines for waterfowls. Anat Rec, 297:916–924, 2014. © 2014 Wiley Periodicals, Inc.
Anaglyph of Retinal Stem Cells And Developing Axons: Selective Volume Enhancement In Microscopy Images
Authors: Carri Néstor Gabriel , Bermúdez Sebastián Noo , Fiore Luciano , Napoli Jennifer Di , Scicolone Gabriel 
Published: June 2014

ABSTRACTRetinal stem cell culture has become a powerful research tool, but it requires reliable methods to obtain high‐quality images of living and fixed cells. This study describes a procedure for using phase contrast microscopy to obtain three‐dimensional (3‐D) images for the study of living cells by photographing a living cell in a culture dish from bottom to top, as well as a procedure to increase the quality of scanning electron micrographs and laser confocal images. The procedure may also be used to photograph clusters of neural stem cells, and retinal explants with vigorous axonal growth. In the case of scanning electron microscopy and laser confocal images, a Gaussian procedure is applied to the original images. The methodology allows for the creation of anaglyphs and video reconstructions, and provides high‐quality images for characterizing living cells or tissues, fixed cells or tissues, or organs observed with scanning electron and laser confocal microscopy. Its greatest advantage is that it is easy to obtain good results without expensive equipment. The procedure is fast, precise, simple, and offers a strategic tool for obtaining 3‐D reconstructions of cells and axons suitable for easily determining the orientation and polarity of a specimen. It also enables video reconstructions to be created, even of specimens parallel to the plastic base of a tissue culture dish, It is also helpful for studying the distribution and organization of living cells in a culture, as it provides the same powerful information as optical tomography, which most confocal microscopes cannot do on sterile living cells. Anat Rec, 297:770–780, 2014. © 2014 Wiley Periodicals, Inc.
Paneth Cell Identification in the Small Intestine of Guinea Pig Offsprings (Cavia porcellus)
Authors: Vásquez Cachay María Elith , Gomez Erika Pebe , Rodríguez Gutiérrez José Luis , Lira Mejía Boris , Pérez Néstor Falcón , Zanuzzi Carolina Natalia , Barbeito Claudio 
Published: June 2014

ABSTRACTThe aim of this study was to determine the presence, number, and morphometrical characteristics of Paneth cells (PC) in the small intestine of guinea pigs during lactation. We used 48 pups from 0 to 15 days old. Samples from small intestine were fixed in 10% buffered formaldehyde (pH 7.4) and processed for histological and morphometrical studies using hematoxylin and eosin (HE), Phloxine tartrazine or Masson's Trichome staining, or immunohistochemistry for lysozyme. PC were morphologically identified at day 2 using Masson's Trichome or Phloxine tartrazine stainings, and at day 4 using HE, whereas using immunohistochemistry they were recognized from birth. Morphometrical differences were found between the intestinal sections at each age studied, and within each section during the first weeks of life. In all developmental stage, the highest number of PC was observed in the duodenum of 13 days old guinea pigs. Our results confirm the presence of PC in the small intestine of guinea pigs from birth. Anat Rec, 297:856–863, 2014. © 2014 Wiley Periodicals, Inc.
The Antiquity of Riverine Adaptations in Iniidae (Cetacea, Odontoceti) Documented by a Humerus from the Late Miocene of the Ituzaingó Formation, Argentina
Authors: Gutstein Carolina Simon , Cozzuol Mario Alberto , Pyenson Nicholas D. 
Published: June 2014

ABSTRACT“River dolphins” are a paraphyletic group of toothed whales (Odontoceti) that represent independent secondary invasions of freshwater habitats. Different “river dolphin” lineages display suites of convergent morphological specializations that commonly reflect adaptations to riverine and freshwater environments, such as longirostry, reduced orbits, and wide, paddle‐like flippers. One lineage, the Iniidae, is presently endemic to South America, and includes several extinct Neogene taxa along with their sole extant genus, Inia (the Amazon River dolphin). We report here a humerus recovered from the late Miocene deposits of the Ituzaingó Formation in the Paraná Basin of Argentina. The specimen exhibits diagnostic features of the family Iniidae, including a scapular‐sternal joint of the humerus, which is a unique anatomical connection among mammals. This joint permits enhanced parasagittal adduction of the flipper as a control surface, relative to other odontocetes, providing Inia with a high degree of maneuverability in its structurally complex and heterogenous riverine habitat. This unique anatomical connection, here documented from the late Miocene (∼9 million years–6.5 million years old), not only provides the oldest diagnostic record for Iniidae, but it also indicates a similar habitat use for this lineage, a finding coincident with the current paleoenvironmental interpretation for the Ituzaingó Formation. Anat Rec, 297:1096–1102, 2014. © 2014 Wiley Periodicals, Inc.