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https://www.readbyqxmd.com/read/29341940/mucocele-of-the-sphenoid-sinus
#1
Karen B Djambazov, Borislav D Kitov, Christo B Zhelyazkov, Atanas N Davarski, Alexandrina R Topalova
Mucocele of the paranasal sinuses is a rare disease with slow evolution. It is a benign, encapsulated and destructive formation filled with mucous fluid and tapistrated with respiratory epithelium. Of all the paranasal sinuses, the sphenoid sinus is affected in only 1-7% of the cases. We present two cases of mucocele of the sphenoid sinus involving the posterior ethmoidal cells. We consider here their clinical presentation, use of neuroimaging in the diagnosis, surgical care and postoperative results. Both patients presented with a history of persistent headache and in addition, one of them had a paresis of the right oculomotor and abducens nerves...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29341115/non-volant-mammals-from-the-upper-paran%C3%A3-river-basin-a-data-set-from-a-critical-region-for-conservation-in-brazil
#2
Fernando Gonçalves, Wellington Hannibal, Mauricio N Godoi, Fernando I Martins, Roniel F Oliveira, Valquiria V Figueiredo, Janaina Casella, Érica F G G de Sá
The data set represents the first attempt at a large-scale inventory of non-volant mammals, with potential applications to performing macroecological studies, developing conservation strategies, and undertaking population and community ecology research, but also to evaluate the ecological consequences of fragmentation and defaunation. Our objectives for compiling these data were to summarize information about inventories of non-volant mammals in the critically important area of the Upper Paraná River Basin by focusing on species richness and index of frequency of occurrence and to identify gaps in knowledge regarding non-volant mammal communities in order to guide future sampling efforts...
January 17, 2018: Ecology
https://www.readbyqxmd.com/read/29338681/the-evolutionary-process-of-mammalian-sex-determination-genes-focusing-on-marsupial-srys
#3
Yukako Katsura, Hiroko X Kondo, Janelle Ryan, Vincent Harley, Yoko Satta
BACKGROUND: Maleness in mammals is genetically determined by the Y chromosome. On the Y chromosome SRY is known as the mammalian male-determining gene. Both placental mammals (Eutheria) and marsupial mammals (Metatheria) have SRY genes. However, only eutherian SRY genes have been empirically examined by functional analyses, and the involvement of marsupial SRY in male gonad development remains speculative. RESULTS: In order to demonstrate that the marsupial SRY gene is similar to the eutherian SRY gene in function, we first examined the sequence differences between marsupial and eutherian SRY genes...
January 16, 2018: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29331578/molecular-detection-and-characterisation-of-babesia-and-theileria-in-australian-hard-ticks
#4
Brooke Storey-Lewis, Ann Mitrovic, Brent McParland
Babesia and Theileria are intraerythrocytic protozoans of the phylum Apicomplexa. These species are capable of infecting wild and domestic animals and have historically caused great economic loss in the agricultural industry. In recent years human babesiosis has been deemed an emerging zoonosis in North America, Europe and Asia. The first locally acquired case of babesiosis in Australia, caused by Babesia microti, was reported in March 2012. A number of native Babesia and Theileria species have been identified in Australian marsupials, however their associated tick vectors and threat to human health is unknown...
December 24, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29330956/craniomandibular-variation-in-phalangeriform-marsupials-functional-comparisons-with-primates
#5
Elizabeth M St Clair, Nicholas Reback, Jonathan M G Perry
Phalangeriform marsupials have often been compared with primates because of similarity in the range of external morphology, ecological niches, and body size between the two radiations. We explore morphological convergence in the masticatory anatomy of strepsirrhine primates and phalangeriforms, through osteological measurements of the mandible and facial skeleton, and through dissection of the masticatory musculature, presenting new data on the arrangement and proportions of jaw adductors in phalangeriforms...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29313064/genetic-diversity-of-bartonella-spp-in-wild-mammals-and-ectoparasites-in-brazilian-pantanal
#6
Keyla Carstens Marques de Sousa, Renan Bressianini do Amaral, Heitor Miraglia Herrera, Filipe Martins Santos, Gabriel Carvalho Macedo, Pedro Cordeiro Estrela de Andrade Pinto, Darci Moraes Barros-Battesti, Rosangela Zacarias Machado, Marcos Rogério André
The present work aimed to investigate the genetic diversity of Bartonella in mammals and ectoparasites in Pantanal wetland, Brazil. For this purpose, 31 Nasua nasua, 78 Cerdocyon thous, 7 Leopardus pardalis, 110 wild rodents, 30 marsupials, and 42 dogs were sampled. DNA samples were submitted to a quantitative real-time PCR assay (qPCR). Positive samples in qPCR were submitted to conventional PCR assays targeting other five protein-coding genes. Thirty-five wild rodents and three Polygenis (P.) bohlsi bohlsi flea pools showed positive results in qPCR for Bartonella spp...
January 8, 2018: Microbial Ecology
https://www.readbyqxmd.com/read/29310550/a-review-on-chlamydial-diseases-in-animals-still-a-challenge-for-pathologists
#7
Nicole Borel, Adam Polkinghorne, Andreas Pospischil
Chlamydiae have a worldwide distribution causing a wide range of diseases in human hosts, livestock, and companion animals as well as in wildlife and exotic species. Moreover, they can persist in their hosts as asymptomatic infections for extended periods of time. The introduction of molecular techniques has revolutionized the Chlamydia field by expanding the host range of known chlamydial species but also by discovering new species and even new families of bacteria in the broader order Chlamydiales. The wide range of hosts, diseases, and tissues affected by chlamydiae complicate the diagnosis such that standard diagnostic approaches for these bacteria are rare...
January 1, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/29305906/the-extraordinary-biology-and-development-of-marsupial-frogs-hemiphractidae-in-comparison-with-fish-mammals-birds-amphibians-and-other-animals
#8
REVIEW
Eugenia M Del Pino
The study of oogenesis and early development of frogs belonging to the family Hemiphractidae provide important comparison to the aquatic development of other frogs, such as Xenopus laevis, because reproduction on land characterizes the Hemiphractidae. In this review, the multinucleated oogenesis of the marsupial frog Flectonotus pygmaeus (Hemiphractidae) is analyzed and interpreted. In addition, the adaptations associated with the incubation of embryos in the pouch of the female marsupial frog Gastrotheca riobambae (Hemiphractidae) and the embryonic development of this frog are summarized...
January 3, 2018: Mechanisms of Development
https://www.readbyqxmd.com/read/29302587/conservative-management-marsupialization-of-unicystic-ameloblastoma-literature-review-and-a-case-report
#9
Jwayoung Kim, Eunkyung Nam, Sukho Yoon
Background: In this study, we present a case of unicystic ameloblastoma (UA) treated by marsupialization followed by surgical enucleation as a conservative approach. UA is a rare, benign, less aggressive, and less invasive variant of ameloblastoma that is observed quite often in younger patients. Radical approaches have effects on the physical and psychological development of a growing young patient; therefore, conservative approaches are widely used for UA management in children. Case presentation: This report described a case of an 11-year-old girl with UA of the mandibular molar-ramus area, which also involved impaction of the second and third molars...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29298933/diversity-and-disparity-of-sparassodonts-metatheria-reveal-non-analogue-nature-of-ancient-south-american-mammalian-carnivore-guilds
#10
Darin A Croft, Russell K Engelman, Tatiana Dolgushina, Gina Wesley
This study investigates whether terrestrial mammalian carnivore guilds of ancient South America, which developed in relative isolation, were similar to those of other continents. We do so through analyses of clade diversification, ecomorphology and guild structure in the Sparassodonta, metatherians that were the predominant mammalian carnivores of pre-Pleistocene South America. Body mass and 16 characters of the dentition are used to quantify morphological diversity (disparity) in sparassodonts and to compare them to extant marsupial and placental carnivores and extinct North American carnivoramorphans...
January 10, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29297829/occurrence-of-pasteurellaceae-bacteria-in-the-oral-cavity-of-selected-marsupial-species
#11
Mie Johanne Hansen, Mads F Bertelsen, Androo Kelly, Anders Miki Bojesen
Eighty-two Pasteurellaceae isolates from marsupials characterized by phylogenetic analysis of rpoB gene sequences formed five distinct groups. Twenty-one strains from long-nosed potoroos ( Potorous tridactylus apicalis), spotted-tailed quolls ( Dasyurus maculatus), and eastern quolls ( Dasyurus viverrinus) made up group 1, which classified with Frederiksenia canicola. Group 2, 15 strains from Tasmanian devils ( Sarcophilus harrisii), common wombats ( Vombatus ursinus), common ring-tailed possums ( Pseudocheirus peregrinus), and eastern quolls, grouped with Pasteurella multocida...
December 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/29279839/limited-approach-in-endoscopic-dacryocystorhinostomy-of-pediatrics
#12
Seyyed Mostafa Hashemi, Afrooz Eshaghian
Background: Limited spatial nasal cavity in children, make pediatric dacryocystorhinostomy (DCR) a difficult surgical procedure. We apply a limited approach to pediatric DCR and follow them for their consequences. Materials and Methods: An experimental study was done in pediatric DCR with limited approach (age < 14-year-old). After written consent, with general anesthesia, with nasal endoscopic surgery, lacrimal bone is exposed and extruded. In contrast with routine procedure, ascending process of maxillary sinus reserve; and marsupialization and wide exposure to lacrimal sac was done only by lacrimal bone defect; and cannulation preserve with temporary silicone tube...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29279565/the-effects-of-marsupialization-on-bone-regeneration-adjacent-to-keratocystic-odontogenic-tumors-and-the-mechanisms-involved
#13
Xiang Hu, Yi Zhao, Qi-Wen Man, Rui-Fang Li, Bing Liu, Yi-Fang Zhao
Bone resorption in the jaws is one of the most severe complications of keratocystic odontogenic tumors (KCOTs), and can be treated by either enucleation or marsupialization. However, the effects of marsupialization on bone regeneration adjacent to KCOTs, and the mechanisms involved, are still unclear. In this study, samples of 27 KCOTs were collected (20 before marsupialization and 7 after marsupialization) to detect the expression of bone regeneration-related molecules adjacent to KCOTs by immunohistochemistry and real-time quantitative polymerase chain reaction (qPCR)...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/29260025/anterior-clinoid-mucocele-causing-optic-neuropathy-a-case-report-and-review-of-literature
#14
Mohab Abozed, Ghanem Alsulaiti, Fatema Almannaei, Ali Raza, Ahmed El Beltagi, Ali Ayyad
A 66 year old Indian gentleman presented with a 3 days history of headache and gradual progressive loss of vision in his eft eye, ophthalmological assessment showed no light perception in his left eye with papilledema and afferent papillary defect. Computed tomography (CT) and Magnetic Resonance Imaging (MRI) were done and showed an expanding lesion in the left anterior clinoid process encroaching upon the left orbital apex and optic nerve with features suggestive of a mucocele. Patient was started on dexamethasone, and urgent craniotomy was undertaken, where marsupialization and resection of left anterior clinoid mucocele was done, and histopathologic examination of the operative specimen was consistent with a mucocele...
June 2017: ENeurologicalSci
https://www.readbyqxmd.com/read/29248591/strategies-of-biochemical-adaptation-for-hibernation-in-a-south-american-marsupial-dromiciops-gliroides-3-activation-of-pro-survival-response-pathways
#15
Bryan E Luu, Sanoji Wijenayake, Jing Zhang, Shannon N Tessier, Julian F Quintero-Galvis, Juan Diego Gaitán-Espitia, Roberto F Nespolo, Kenneth B Storey
The South American marsupial, monito del monte (Dromiciops gliroides) uses both daily torpor and multi-day hibernation to survive in its southern Chile native environment. The present study leverages multiplex technology to assess the contributions of key stress-inducible cell cycle regulators and heat shock proteins to hibernation in liver, heart, and brain of monito del monte in a comparison of control versus 4day hibernating conditions. The data indicate that MDM2, a stress-responsive ubiquitin ligase, plays a crucial role in marsupial hibernation since all three tissues showed statistically significant increases in MDM2 levels during torpor (1...
December 14, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29247846/strategies-of-biochemical-adaptation-for-hibernation-in-a-south-american-marsupial-dromiciops-gliroides-2-control-of-the-akt-pathway-and-protein-translation-machinery
#16
Bryan E Luu, Sanoji Wijenayake, Jing Zhang, Shannon N Tessier, Julian F Quintero-Galvis, Juan Diego Gaitán-Espitia, Roberto F Nespolo, Kenneth B Storey
When faced with harsh environmental conditions, the South American marsupial, monito del monte (Dromiciops gliroides), reduces its body temperature and uses either daily torpor or multiday hibernation to survive. This study used ELISA and multiplex assays to characterize the responses to hibernation by three regulatory components of protein translation machinery [p-eIF2α(S51), p-eIF4E(S209), p-4EBP(Thr37/46)] and eight targets involved in upstream signaling control of translation [p-IGF-1R(Tyr1135/1136), PTEN(S380), p-Akt(S473), p-GSK-3α(S21), p-GSK-3β(S9), p-TSC2(S939), p-mTOR(S2448), and p70S6K(T412)]...
December 13, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29247845/strategies-of-biochemical-adaptation-for-hibernation-in-a-south-american-marsupial-dromiciops-gliroides-1-mitogen-activated-protein-kinases-and-the-cell-stress-response
#17
Sanoji Wijenayake, Bryan E Luu, Jing Zhang, Shannon N Tessier, Julian F Quintero-Galvis, Juan Diego Gaitán-Espitia, Roberto F Nespolo, Kenneth B Storey
Hibernation is a period of torpor and heterothermy that is typically associated with a strong reduction in metabolic rate, global suppression of transcription and translation, and upregulation of various genes/proteins that are central to the cellular stress response such as protein kinases, antioxidants, and heat shock proteins. The current study examined cell signaling cascades in hibernating monito del monte, Dromiciops gliroides, a South American marsupial of the Order Microbiotheria. Responses to hibernation by members of the mitogen-activated protein kinase (MAPK) pathways, and their roles in coordinating hibernator metabolism were examined in liver, kidney, heart and brain of control and versus hibernating (4days continuous torpor) D...
December 13, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29247844/strategies-of-biochemical-adaptation-for-hibernation-in-a-south-american-marsupial-dromiciops-gliroides-4-regulation-of-pyruvate-dehydrogenase-complex-and-metabolic-fuel-selection
#18
Sanoji Wijenayake, Bryan E Luu, Jing Zhang, Shannon N Tessier, Julian F Quintero-Galvis, Juan Diego Gaitán-Espitia, Roberto F Nespolo, Kenneth B Storey
Mammalian hibernation is characterized by extensive adjustments to metabolism that typically include suppression of carbohydrate catabolism and a switch to triglycerides as the primary fuel during torpor. A crucial locus of control in this process is the pyruvate dehydrogenase complex that gates carbohydrate entry into the tricarboxylic acid cycle. Within the complex, the E1 enzyme pyruvate dehydrogenase (PDH) is the main regulatory site and is subject to inhibitory phosphorylation at three serine residues (S232, S293, S300)...
December 13, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29244604/lateral-rhinostomy-for-treatment-of-severe-chronic-rhinosinusitis-in-two-rabbits
#19
Louden Wright, Christoph Mans
CASE DESCRIPTION 2 client-owned rabbits were evaluated for signs of chronic upper respiratory tract disease. CLINICAL FINDINGS Clinical signs had been present for 3 weeks and 4 years and included mucopurulent nasal discharge, right-sided maxillary swelling, recurrent dacryocystitis, and intermittent sneezing. One rabbit had been treated with nasolacrimal duct lavage and topical and systemic antimicrobial administration without resolution of clinical signs. Results of CT of the head in both cases indicated severe rhinosinusitis...
January 1, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29243855/non-invasive-placentation-in-the-marsupials-macropus-eugenii-macropodidae-and-trichosurus-vulpecula-phalangeridae-involves-redistribution-of-uterine-desmoglein-2
#20
Melanie K Laird, Hanon McShea, Christopher R Murphy, Bronwyn M McAllan, Geoff Shaw, Marilyn B Renfree, Michael B Thompson
In mammalian pregnancy, the uterus is remodelled to become receptive to embryonic implantation. Since non-invasive placentation in marsupials is likely derived from invasive placentation, and is underpinned by intra-uterine conflict between mother and embryo, species with non-invasive placentation may employ a variety of molecular mechanisms to maintain an intact uterine epithelium and to prevent embryonic invasion. Identifying such modifications to the uterine epithelium of marsupial species with non-invasive placentation is key to understanding how conflict is mediated during pregnancy in different mammalian groups...
December 15, 2017: Molecular Reproduction and Development
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