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https://www.readbyqxmd.com/read/28428525/-total-arch-replacement-using-manufactured-frozen-elephant-trunk-after-acute-type-a-dissection-repair
#1
Makoto Hibino, Masato Mutsuga, Hideki Oshima, Yuji Narita, Tomonobu Abe, Kazuro Fujimoto, Yoshiyuki Tokuda, Akihiko Usui
The purpose of this study is to assess the result of total arch replacement(TAR) using manufactured frozen elephant trunk(FET) for chronic aortic dissection after initial repair including the effect of aortic remodeling by the FET. Between 2003 and 2015, we performed 11 TAR using manufactured FET. Initial repairs before were 9 ascending aortic replacements and 2 Bentall operations. The entry of residual dissection was located at arch in 7 and at distal anastomosis site in 4. There was no hospital death. The operative complication included 2 surgical site infection, 1 interstitial pneumonia and 1 paraplegia with almost full recovery...
April 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28425091/marine-bioluminescence-measurement-by-a-classical-light-sensor-and-related-foraging-behaviour-of-a-deep-diving-predator
#2
Jade Vacquié-Garcia, Jérôme Mallefet, Frédéric Bailleul, Baptiste Picard, Christophe Guinet
Bioluminescence is produced by a broad range of organisms for defense, predation or communication purposes. Southern elephant seal (SES) vision is adapted to low intensity light with a peak sensitivity, matching the wavelength emitted by myctophid species, one of the main prey of female SES. A total of 11 satellite-tracked female SES were equipped with a Time-Depth-Light 3D-accelerometers (TDR10-X) in order to assess whether bioluminescence could be used by SES to locate their prey. First, we demonstrated experimentally that the TDR10-X light sensor was sensitive enough to detect natural bioluminescence; however, we highlighted a low distance detection of the sensor...
April 20, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28422091/male-african-elephants-discriminate-and-prefer-vocalizations-of-unfamiliar-females
#3
Angela S Stoeger, Anton Baotic
Gaining information about conspecifics via long-distance vocalizations is crucial for social and spatially flexible species such as the African elephant (Loxodonta africana). Female elephants are known to discriminate individuals and kin based on acoustic cues. Specifically, females approached the loudspeaker exclusively with playbacks of familiar individuals with high association indexes, intentionally fusing with their affiliates. For males, which are less bonded, gathering social information via vocalizations could still have important implications, but little is known about their vocal discrimination skills...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421289/adult-male-northern%C3%A2-elephant-seals-maintain-high-rates-of-glucose-production-during-extended-breeding-fasts
#4
Daniel E Crocker, Brian K Wenzel, Cory D Champagne, Dorian S Houser
Many species undergo natural fasts as part of their life histories. Extended fasting is associated with increased β-oxidation of fatty acids and reduced oxidation of glucose to minimize commitment of body protein to gluconeogenesis. However, the metabolic strategies used to sustain extended fasts simultaneous with high rates of energy expenditure are not well understood. Studies in fasting adult female and weanling northern elephant seals (NES) have revealed high rates of endogenous glucose production (EGP) under constraints of high nutrient demand for lactation or development but relatively low rates of metabolism...
April 18, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28414784/savanna-elephant-numbers-are-only-a-quarter-of-their-expected-values
#5
Ashley S Robson, Morgan J Trimble, Andrew Purdon, Kim D Young-Overton, Stuart L Pimm, Rudi J van Aarde
Savannas once constituted the range of many species that human encroachment has now reduced to a fraction of their former distribution. Many survive only in protected areas. Poaching reduces the savanna elephant, even where protected, likely to the detriment of savanna ecosystems. While resources go into estimating elephant populations, an ecological benchmark by which to assess counts is lacking. Knowing how many elephants there are and how many poachers kill is important, but on their own, such data lack context...
2017: PloS One
https://www.readbyqxmd.com/read/28403189/rapid-forest-clearing-in-a-myanmar-proposed-national-park-threatens-two-newly-discovered-species-of-geckos-gekkonidae-cyrtodactylus
#6
Grant M Connette, Patrick Oswald, Myint Kyaw Thura, Katherine J LaJeunesse Connette, Mark E Grindley, Melissa Songer, George R Zug, Daniel G Mulcahy
Myanmar's recent transition from military rule towards a more democratic government has largely ended decades of political and economic isolation. Although Myanmar remains heavily forested, increased development in recent years has been accompanied by exceptionally high rates of forest loss. In this study, we document the rapid progression of deforestation in and around the proposed Lenya National Park, which includes some of the largest remaining areas of lowland evergreen rainforest in mainland Southeast Asia...
2017: PloS One
https://www.readbyqxmd.com/read/28402335/elephants-know-when-their-bodies-are-obstacles-to-success-in-a-novel-transfer-task
#7
Rachel Dale, Joshua M Plotnik
The capacity to recognise oneself as separate from other individuals and objects is difficult to investigate in non-human animals. The hallmark empirical assessment, the mirror self-recognition test, focuses on an animal's ability to recognise itself in a mirror and success has thus far been demonstrated in only a small number of species with a keen interest in their own visual reflection. Adapting a recent study done with children, we designed a new body-awareness paradigm for testing an animal's understanding of its place in its environment...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28395872/outcomes-of-antegrade-stent-graft-deployment-during-hybrid-aortic-arch-repair
#8
Seyed Hossein Aalaei-Andabili, Salvatore Scali, Charles Klodell, Teng Lee, Philip Hess, Tomas Martin, Adam Beck, Robert Feezor, Mahmoud Alhussaini, George Arnaoutakis, Thomas Beaver
BACKGROUND: Complex aortic arch disease can be a formidable challenge and is often treated with a two-stage elephant trunk technique. We examined our experience with hybrid arch repair with combined zone 0 stent graft deployment. METHODS: A retrospective review was conducted of all patients who underwent type 2 hybrid arch replacement and zone 0 antegrade endovascular stent graft deployments at a single university center from June 2010 to August 2015. RESULTS: The review included 48 patients, 25 (52%) elective and 23 (48%) nonelective, with a mean ± SD age of 64 ± 11 years...
April 7, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28390767/management-and-outcomes-of-carotid-artery-extension-of-aortic-dissections
#9
Adriana Laser, Charles B Drucker, Donald G Harris, Tanya Flohr, Shahab Toursavadkohi, Rajabrata Sarkar, Bradley Taylor, Robert S Crawford
BACKGROUND: Aortic dissection (AD) is the most common aortic catastrophe. Carotid artery dissection due to extension of AD (CAEAD) is one severe complication of this condition. Despite years of refinement in the techniques for repair of AD, the optimal management strategy for CAEAD remains yet to be described. We hypothesized that CAEAD eventually resolves on antiplatelet therapy with a low but not insignificant risk of cerebrovascular accident (CVA). METHODS: This was a single-institution retrospective review of patients admitted with nontraumatic coincident aortic and carotid dissection between 2001 and 2013...
April 5, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28387333/elemental-classification-of-the-tusks-of-dugong-dugong-dugong-by-hh-xrf-analysis-and-comparison-with-other-species
#10
Korakot Nganvongpanit, Kittisak Buddhachat, Promporn Piboon, Thippaporn Euppayo, Patcharaporn Kaewmong, Phaothep Cherdsukjai, Kongkiat Kittiwatanawong, Chatchote Thitaram
The elemental composition was investigated and applied for identifying the sex and habitat of dugongs, in addition to distinguishing dugong tusks and teeth from other animal wildlife materials such as Asian elephant (Elephas maximus) tusks and tiger (Panthera tigris tigris) canine teeth. A total of 43 dugong tusks, 60 dugong teeth, 40 dolphin teeth, 1 whale tooth, 40 Asian elephant tusks and 20 tiger canine teeth were included in the study. Elemental analyses were conducted using a handheld X-ray fluorescence analyzer (HH-XRF)...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28380524/fabrication-yields-of-serially-harvested-calf-fed-holstein-steers-fed-zilpaterol-hydrochloride
#11
N D May, T J McEvers, L J Walter, J A Reed, J P Hutcheson, T E Lawrence
Holstein steers ( = 110) were fed zilpaterol hydrochloride (ZH) for 0 or 20 d before slaughter during a 280-d serial harvest study. Cattle were harvested every 28 d beginning at 254 d on feed (DOF) and concluding at 534 DOF. After slaughter, carcasses were chilled for 48 h and then fabricated into boneless closely trimmed or denuded subprimals, lean trim, trimmable fat, and bone. Inclusion of ZH increased cold side weight (CSW) by 10.3 kg ( < 0.01; 212.7 vs. 202.4 kg [SEM 1.96]) and saleable yield by 10...
March 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28369217/evolutionary-adaptation-revealed-by-comparative-genome-analysis-of-woolly-mammoths-and-elephants
#12
Sean D Smith, Joseph K Kawash, Spyros Karaiskos, Ian Biluck, Andrey Grigoriev
Comparative genomics studies typically limit their focus to single nucleotide variants (SNVs) and that was the case for previous comparisons of woolly mammoth genomes. We extended the analysis to systematically identify not only SNVs but also larger structural variants (SVs) and indels and found multiple mammoth-specific deletions and duplications affecting exons or even complete genes. The most prominent SV found was an amplification of RNase L (with different copy numbers in different mammoth genomes, up to 9-fold), involved in antiviral defense and inflammasome function...
March 22, 2017: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
https://www.readbyqxmd.com/read/28365015/thymectomy-for-myasthenia-gravis-the-elephant-and-the-blind-men
#13
EDITORIAL
Daniel C Kim, M Blair Marshall
No abstract text is available yet for this article.
March 8, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28359715/simplified-total-aortic-arch-replacement-with-an-in-situ-stent-graft-fenestration-technique-for-acute-type-a-aortic-dissection
#14
Xiaoping Hu, Zhiwei Wang, Zongli Ren, Rui Hu, Hongbing Wu
OBJECTIVE: Total arch replacement combined with stented elephant trunk implantation in the descending aorta has successfully improved the outcomes of acute type A aortic dissection (AAAD). However, the optimal surgical strategy for the left subclavian artery (LSA) during the procedure remains a challenge. This study aimed to present our new technique of in situ stent graft fenestration to simplify the surgical procedure for suitable cases of AAAD. METHODS: From August 2008 to December 2015, a total of 106 patients underwent simplified total aortic arch replacement with an in situ stent graft fenestration technique...
March 27, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28359505/management-of-retrograde-false-lumen-perfusion-after-hybrid-arch-repair-in-acute-aortic-dissection
#15
Alexey Dashkevich, Christian Hagl, Gerd Juchem, Maximilian Luehr, Maximilian A Pichlmaier
Patients with acute aortic dissections involving the arch and descending aorta can effectively be treated using the frozen elephant trunk technique. We describe here the novel technique of temporary banding of the descending aorta onto the stent of the hybrid graft in 3 patients who developed unmanageable bleeding from the distal suture line due to retrograde false lumen perfusion and disintegration of the adventitia. Retrograde false lumen perfusion was stopped and therefore bleeding controlled in all patients...
April 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28344688/no-one-is-talking-about-the-elephant-in-the-room
#16
EDITORIAL
Marcel D'Eon
No abstract text is available yet for this article.
October 2016: Canadian Medical Education Journal
https://www.readbyqxmd.com/read/28336714/my-life-with-elephants
#17
Sarad Paudel
Born and raised in western Nepal, Sarad Paudel saw his first elephant at Chitwan National Park, southern Nepal, and resolved to build his career around them.
March 25, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28335096/estimation-of-methane-emissions-from-local-and-crossbreed-beef-cattle-in-dak-lak-province-of-vietnam
#18
Carlos Alberto Ramírez-Restrepo, Dung Van Tien, Ngoan Le Duc, Mario Herrero, Phung Le Dinh, Dung Dinh Van, Sen Le Thi Hoa, Cuong Vu Chi, Cesar Solano-Patiño, Amy M Lerner, Timothy D Searchinger
Objective: This study was aimed at evaluating effects of cattle breed resources and alternative mixed-feeding practices on meat productivity and emission intensities from household farming systems in Daklak Province, Vietnam. Methods: Records from Local Yellow x Red Sindhi (Bos indicus; Lai Sind) and ½ Limousin, ½ Drought Master and ½ Red Angus cattle during the growth (0 to 21 months) and fattening (22 to 25 months) periods were used to better understand variations on meat productivity and enteric methane emissions...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28333829/acute-traumatic-coagulopathy-the-elephant-in-a-room-of-blind-scientists
#19
Michael A Meledeo, Maryanne C Herzig, James A Bynum, Xiaowu Wu, Anand K Ramasubramanian, Daniel N Darlington, Kristin M Reddoch, Andrew P Cap
Acute traumatic coagulopathy (ATC) is the failure of coagulation homeostasis that can rapidly arise following traumatic injury, hemorrhage, and shock; it is associated with higher injury severity, coagulation abnormalities, and increased blood transfusions. ATC has historically been defined by a prolonged prothrombin time (PT), although newer, more informative measurements of hemostatic function have been employed to improve diagnosis and support clinical decision making. The underlying biochemical mechanisms of and best practice therapeutics for ATC remain under active investigation because of its significant correlation to poor outcomes...
March 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28329264/bow-hunter-syndrome-elicited-by-vertebral-arterial-occlusion-after-total-arch-replacement
#20
Hiroto Kitahara, Tomohiro Takeda, Kazumi Akasaka, Hiroyuki Kamiya
An 83-year-old man with arch aneurysm underwent total arch replacement with frozen elephant trunk and extra-anatomical left subclavian artery bypass. One year later, he felt dizziness associated with head rotation. The hypoplastic left vertebral artery was occluded by a thrombus extending from the left subclavian artery ligation site, and the dynamic stenosis of right vertebral artery by head rotation induced dizziness. He was diagnosed with Bow Hunter syndrome. Vertebral artery hypoplasia represents a possible cause of this rare complication...
January 31, 2017: Interactive Cardiovascular and Thoracic Surgery
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