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https://www.readbyqxmd.com/read/28080922/solitary-osteochondroma-of-the-distal-third-metacarpal-bone-in-a-two-year-old-white-rhinoceros-ceratotherium-simum
#1
Yolandi Smit, Johan Steyl, Johan Marais
A privately owned, 2-yr-old, 600-kg, intact male white rhinoceros presented with a progressive lameness of the left front limb of 8-mo duration with a focal swelling situated over the dorsoproximal aspect of third metacarpophalangeal joint. Radiographs of the affected limb showed a 28 mm × 26 mm exostosis at the dorsodistal third metacarpal bone. Surgical removal of the exostosis was performed and histopathologic examination confirmed a solitary osteochondroma. A follow-up examination 1 yr after surgical removal revealed total abolishment of the left front limb lameness...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28080906/oral-squamous-cell-carcinoma-in-an-aged-captive-white-rhinoceros-ceratotherium-simum
#2
Sandra Langer, Nadine Czerwonka, Kerstin Ternes, Dr Werner Herbst, Kernt Koehler
A 48-yr-old captive white rhinoceros ( Ceratotherium simum ) was euthanized due to old age, pododermatitis, and progressive laminitis of the middle toe of the left fore- and hindlimbs. Severe chronic necrotizing periodontitis and dental loss was diagnosed, although food intake prior to death had not decreased. In addition, extensive ulceration of the tongue was noted. Histologically, squamous cell carcinoma of the tongue was diagnosed with chronic severe ulcerative glossitis. Metastatic lesions were not detected...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28073403/arcanobacterium-wilhelmae-sp-nov-isolated-from-the-genital-tract-of-a-rhinoceros-rhinoceros-unicornis
#3
Osama Sammra, Jörg Rau, Jörn-Peter Wickhorst, Mazen Alssahen, Abdulwahed Ahmed Hassan, Christoph Lämmler, Peter Kämpfer, Stefanie P Glaeser, Hans-Jürgen Busse, Tanita Kleinhagauer, Tobias Knauf-Witzens, Ellen Prenger-Berninghoff, Amir Abdulmawjood, Günter Klein
AbstractA polyphasic taxonomic study was performed on an unidentified Arcanobacterium-like Gram-stain-positive bacterium isolated from the genital tract of a rhinoceros. Comparative 16S rRNA gene sequencing showed that the bacterium belonged to the genus Arcanobacterium and was most closely related to the type strains of Arcanobacterium canis (98.8 %), Arcanobacterium phocisimile (97.8 %), Arcanobacterium phocae (97.7%), Arcanobacterium haemolyticum (97.4 %), Arcanobacterium hippocoleae (96.6 %), Arcanobacterium pinnipediorum (96...
January 10, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28058607/hair-microstructure-of-the-first-time-found-calf-of-woolly-rhinoceros-coelodonta-antiquitatis
#4
O F Chernova, A V Protopopov, T V Perfilova, I V Kirillova, G G Boeskorov
Hair microstructure of the first calf of the woolly rhinoceros Coelodonta antiquitatis found in Sakha in 2014 (the neck and hind leg hair) was examined by the light and electron scanning microscopy. The calf hair features were compared with those of two adults studied earlier. The calf coat color was much lighter than in adults, from pale ashy to blond. The extent of hair differentiation, dimensional and pigmentation indices were lower in the calf than in adult rhinoceroses. There was no medulla in the calf hairs, while in those of adults it was occasionally found...
November 2016: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/28058601/the-first-finding-of-a-rhinoceros-of-the-genus-stephanorhinus-in-arctic-asia
#5
I V Kirillova, O F Chernova, V V Kukarskikh, F K Shidlovskiy, O G Zanina
The first skull of a rhinoceros of the genus Stephanorhinus has been found above the Arctic Circle on the middle Chondon River (Yakutia, Russia). This is the northernmost finding that extends significantly the genus range and provides additional information about the diet and environment of a genus representative. Plant remnants from the maxillary tooth cavities were identified as belonging to trees (Larix, Betula), shrubs (Ericaceae), mosses (Aulacomnium sp., Polytrichum sp.), herbs (Dicotyledones) and grasses (Poaceae), but not to sedges (Cyperaceae)...
November 2016: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/28048849/su-f-j-174-a-series-of-computational-human-phantoms-in-dicom-rt-format-for-normal-tissue-dose-reconstruction-in-epidemiological-studies
#6
A Pyakuryal, B Moroz, C Lee, C Pelletier, J Jung, C Lee
PURPOSE: Epidemiological studies of second cancer risk in radiotherapy patients often require individualized dose estimates of normal tissues. Prior to 3D conformal radiation therapy planning, patient anatomy information was mostly limited to 2D radiological images or not even available. Generic patient CT images are often used in commercial radiotherapy treatment planning system (TPS) to reconstruct normal tissue doses. The objective of the current work was to develop a series of reference size computational human phantoms in DICOM-RT format for direct use in dose reconstruction in TPS...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048702/tu-h-brc-01-a-new-fabrication-method-for-secondary-skin-collimation-using-3d-scanner-and-3d-printer
#7
J Jung, N Potter, T Suh, C Liu, B Lu
PURPOSE: Using secondary skin collimation (SSC) to protect the critical organ surrounding the tumors is always desirable for electron and/or ortho-voltage treatments. However, the time-consuming and labor-intensive fabrication processes of current method (manually fabricate the lead mask) restrict the general use of SSC. The aim of this study is to develop a new SSC fabrication method using 3D scanning and 3D printing technologies in order to largely decrease the human labor involvement and fabrication time, also improve the fabrication accuracy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28032205/enterovirga-rhinocerotis-gen-nov-sp-nov-isolated-from-rhinoceros-unicornis-faeces
#8
Xiu Chen, Qin-Yuan Li, Gui-Ding Li, Hui Lei, Yi Jiang, Li Han, Xue-Shi Huang, Cheng-Lin Jiang
A novel strain, YIM 100770(T), was isolated from Rhinoceros unicornis faeces collected from Yunnan Wild Animal Park, China. The taxonomic status was determined based on the physiological, biochemical and phylogenetic characteristics. Strain YIM 100770(T) was observed to be rod-shaped, non-motile, Gram-stain negative and aerobic. The G+C content of the genomic DNA was determined to be 68.5 mol%. The cells of strain YIM 100770(T) contain ubiquinone Q-10 as the respiratory quinone. The major fatty acids (>1%) were identified as Summed feature 8 (C18:1 ω7c and/or C18:1 ω6c; 78...
December 28, 2016: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/27993990/judas-beetles-discovering-cryptic-breeding-sites-by-radio-tracking-coconut-rhinoceros-beetles-oryctes-rhinoceros-coleoptera-scarabaeidae
#9
Aubrey Moore, Diego C Barahona, Katherine A Lehman, Dominick D Skabeikis, Ian R Iriarte, Eric B Jang, Matthew S Siderhurst
The coconut rhinoceros beetle, Oryctes rhinoceros L., is a serious pest of coconut and other palms throughout Southeast Asia and on several Pacific Islands. Adults damage and sometimes kill palms when they bore into the crown to feed. In contrast, larvae feed only on dead plant material at breeding sites. Typically, coconut rhinoceros beetle populations are controlled with a combination of biocontrol, pheromone traps, and breeding site removal. A field trial was performed at two locations on Guam to test the feasibility of using the Judas technique, releasing radio-tagged adults to discover cryptic breeding sites, for potential coconut rhinoceros beetle control...
December 19, 2016: Environmental Entomology
https://www.readbyqxmd.com/read/27987717/effect-of-different-types-of-prosthetic-platforms-on-stress-distribution-in-dental-implant-supported-prostheses
#10
Lurian Minatel, Fellippo Ramos Verri, Guilherme Abu Halawa Kudo, Daniel Augusto de Faria Almeida, Victor Eduardo de Souza Batista, Cleidiel Aparecido Araujo Lemos, Eduardo Piza Pellizzer, Joel Ferreira Santiago
A biomechanical analysis of different types of implant connections is relevant to clinical practice because it may impact the longevity of the rehabilitation treatment. Therefore, the objective of this study is to evaluate the Morse taper connections and the stress distribution of structures associated with the platform switching (PSW) concept. It will do this by obtaining data on the biomechanical behavior of the main structure in relation to the dental implant using the 3-dimensional finite element methodology...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27867761/hyainailourine-and-teratodontine-cranial-material-from-the-late-eocene-of-egypt-and-the-application-of-parsimony-and-bayesian-methods-to-the-phylogeny-and-biogeography-of-hyaenodonta-placentalia-mammalia
#11
Matthew R Borths, Patricia A Holroyd, Erik R Seiffert
Hyaenodonta is a diverse, extinct group of carnivorous mammals that included weasel- to rhinoceros-sized species. The oldest-known hyaenodont fossils are from the middle Paleocene of North Africa and the antiquity of the group in Afro-Arabia led to the hypothesis that it originated there and dispersed to Asia, Europe, and North America. Here we describe two new hyaenodont species based on the oldest hyaenodont cranial specimens known from Afro-Arabia. The material was collected from the latest Eocene Locality 41 (L-41, ∼34 Ma) in the Fayum Depression, Egypt...
2016: PeerJ
https://www.readbyqxmd.com/read/27859814/black-rhinoceros-diceros-bicornis-and-domestic-horse-equus-caballus-hindgut-microflora-demonstrate-similar-fermentation-responses-to-grape-seed-extract-supplementation-in%C3%A2-vitro
#12
N F Huntley, H D Naumann, A L Kenny, M S Kerley
The domestic horse is used as a nutritional model for rhinoceros maintained under human care. The validity of this model for browsing rhinoceros has been questioned due to high prevalence of iron overload disorder (IOD) in captive black rhinoceros (Diceros bicornis), which is associated with high morbidity and mortality. Iron chelators, such as tannins, are under investigation as dietary supplements to ameliorate or prevent IOD in prone species. Polyphenolic compounds variably affect microbial fermentation, so the first objective of this experiment was to evaluate the effects of grape seed extract (GSE; a concentrated source of condensed tannins; CT) on black rhinoceros hindgut fermentation...
November 13, 2016: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/27858087/three-dimensional-analysis-of-the-proximal-humeral-and-glenoid-geometry-using-microscribe-3d-digitizer
#13
Wejdan H Owaydhah, Mohammad A Alobaidy, Abdulrahman S Alraddadi, Roger W Soames
PURPOSE: To understand the geometry of the proximal humerus and glenoid fossa to facilitate the design of components used in shoulder arthroplasty. The aim is to evaluate the geometry of the proximal humerus and glenoid fossa and their relationship using a MicroScribe 3D digitizer. METHODS: Scans and measurements were obtained from 20 pairs of dry proximal humeri and scapulae [10 female and 10 male cadavers: median age 81 years (range 70-94 years)] using a MicroScribe 3D digitizer and Rhinoceros software...
November 17, 2016: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27813090/reconstruction-of-body-cavity-volume-in-terrestrial-tetrapods
#14
Marcus Clauss, Irina Nurutdinova, Carlo Meloro, Hanns-Christian Gunga, Duofang Jiang, Johannes Koller, Bernd Herkner, P Martin Sander, Olaf Hellwich
Although it is generally assumed that herbivores have more voluminous body cavities due to larger digestive tracts required for the digestion of plant fiber, this concept has not been addressed quantitatively. We estimated the volume of the torso in 126 terrestrial tetrapods (synapsids including basal synapsids and mammals, and diapsids including birds, non-avian dinosaurs and reptiles) classified as either herbivore or carnivore in digital models of mounted skeletons, using the convex hull method. The difference in relative torso volume between diet types was significant in mammals, where relative torso volumes of herbivores were about twice as large as that of carnivores, supporting the general hypothesis...
November 4, 2016: Journal of Anatomy
https://www.readbyqxmd.com/read/27804143/retinal-ganglion-cell-topography-and-spatial-resolving-power-in-the-white-rhinoceros-ceratotherium-simum
#15
João Paulo Coimbra, Paul R Manger
This study sought to determine whether the retinal organization of the white rhinoceros, a large African herbivore with lips specialized for grazing in open savannahs, relates to its foraging ecology and habitat. Using stereology and retinal wholemounts, we estimated a total of 353,000 retinal ganglion cells. Their density distribution reveals an unusual topographic organization of a temporal (2,000 cells/mm(2) ) and a nasal (1,800 cells/mm(2) ) area embedded within a well-defined horizontal visual streak (800 cells/mm(2) ), which is remarkably similar to the retinal organization in the black rhinoceros...
November 2, 2016: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/27785798/acute-hepatic-necrosis-and-death-in-a-subadult-southern-white-rhinoceros-ceratotherium-simum-associated-with-exposure-to-sterigmatocystin-in-forage-contaminated-with-aspergillus-nidulans
#16
B R Bryant, M Campbell, C Sangster
A young male southern white rhinoceros (Ceratotherium simum), which was resident in a zoo as part of a multi-rhinoceros group, died suddenly. Necropsy and histopathological findings supported a diagnosis of death from acute hepatic necrosis. The microscopic distribution of liver lesions was suggestive of hepatotoxicosis. Further investigation revealed potential exposure to a mycotoxin, sterigmatocystin, present in spoiled lucerne hay contaminated with Aspergillus nidulans. It was concluded that mycotoxicosis was the likely cause of the hepatic necrosis and death in this animal...
November 2016: Australian Veterinary Journal
https://www.readbyqxmd.com/read/27691969/medical-management-of-recurrent-eosinophilic-granuloma-in-two-black-rhinoceros-diceros-bicornis
#17
Greg T Bishop, Jeffery R Zuba, Allan P Pessier, Jane Hopper, Gloria Kendall, Rod A W Rosychuk, K Gary Magdesian
Recurrent eosinophilic granuloma (EG) in two captive eastern black rhinoceros ( Diceros bicornis michaeli) was effectively managed with glucocorticoids and antihistamines. The first case was a female and the second case was a male. The animals were housed at separate institutions and initially presented with hemorrhagic oral lesions. Multifocal lesions occurred in the second case. Multiple biopsies were taken from each animal, all of which were consistent with EG. Each animal was anesthetized multiple times for surgical treatment but experienced frequent recurrence...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/27691965/anesthesia-in-a-captive-juvenile-black-rhinoceros-diceros-bicornis-for-magnetic-resonance-imaging-and-computed-tomography
#18
Cameron Ratliff, Rebecca S Sayre, Mauricio Lepiz
A hand-reared, 53-kg, female, 30-day-old black rhinoceros ( Diceros bicornis ) calf presented for magnetic resonance imaging and computed tomography after demonstrating neurologic signs. The rhino was premedicated intramuscularly with butorphanol and midazolam, yielding satisfactory sedation. Induction was achieved using intravenous propofol until the trachea could be intubated. Anesthesia was maintained with sevoflurane in 100% oxygen (mean end-tidal concentration of 2 ± 0.5%). Mean values recorded during anesthesia included were heart rate, end-tidal carbon dioxide, respiratory rate, noninvasive blood pressure, and pulse oximetry...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/27691961/congenital-cleft-palate-and-cardiac-septal-defects-in-a-neonatal-southern-black-rhinoceros-diceros-bicornis-minor
#19
Stephany Lewis, Mary Duncan, Marlys L Houck, Rebecca Bloch, Holly Haefele
A female Southern black rhinoceros ( Diceros bicornis minor) calf died unexpectedly at less than 12 hr of age, after an uncomplicated birth and uneventful early postpartum period. Gross necropsy revealed a 15-cm full thickness cleft palate, a patent foramen ovale, and four septal defects ranging from 0.3 to 1 cm in diameter. Histologic findings did not reveal any significant abnormalities. Karyotyping did not indicate any significant numerical or structural chromosomal abnormalities.
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/27691960/evaluation-of-serum-ferritin-and-serum-iron-in-free-ranging-black-rhinoceros-diceros-bicornis-as-a-tool-to-understand-factors-affecting-iron-overload-disorder
#20
Michele Miller, Patricia Sue Chavey, Jennifer Hofmeyr, Nomkhosi Mathebula, Alyssa Doering, Peter Buss, Francisco Olea-Popelka
Iron overload disorder (IOD) is a significant health issue for captive black rhinoceros ( Diceros bicornis ). Measurement of serum ferritin with a validated rhinoceros ferritin ELISA has been used extensively to detect animals in U.S. zoos that are at risk of developing IOD. However, there is limited information on serum ferritin levels in free-ranging black rhinoceros using this same assay. Serum ferritin, iron, and gamma-glutamyl transpeptidase (GGT) were determined in 194 black rhinoceros from southern Africa...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
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