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Fujii H, Fujita A, Yang A, Kanazawa H, Buch K, Sakai O, Sugimoto H. Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence. AJNR Am J Neuroradiol 2015; 36:1333-7. [PMID: 25836724 DOI: 10.3174/ajnr.a4288] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/17/2014] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although visualization of the extracranial branches of the cranial nerves has improved with advances in MR imaging, only limited studies have assessed the detection of extracranial branches of the mandibular nerve (V3). We investigated the detectability of the branches of V3 on a 3D double-echo steady-state with water excitation sequence. MATERIALS AND METHODS We retrospectively evaluated the detectability of the 6 branches of the V3, the masseteric, buccal, auriculotemporal, lingual, inferior alveolar, and mylohyoid nerves, by using a 5-point scale (4, excellent; 3, good; 2, fair; 1, poor; and 0, none) in 86 consecutive patients who underwent MR imaging with the 3D double-echo steady-state with water excitation sequence. Weighted κ analysis was used to calculate interobserver variability among the 3 readers. RESULTS The detection of the lingual and inferior alveolar nerves was the most successful, with excellent average scores of 3.80 and 3.99, respectively. The detection of the masseteric, the buccal, and the auriculotemporal nerves was good, with average scores of 3.31, 2.67, and 3.11, respectively. The mylohyoid nerve was difficult to detect with poor average scores of 0.62. All nerves had excellent interobserver variability across the 3 readers (average weighted κ value, 0.95-1.00). CONCLUSIONS The 3D double-echo steady-state with water excitation sequence demonstrated excellent visualization of the extracranial branches of V3 in most patients. The 3D double-echo steady-state with water excitation sequence has the potential for diagnosing V3 pathologies and preoperatively identifying peripheral cranial nerves to prevent surgical complications.
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Yang A, Xiao XH, Wang ZL. Evaluation of normal changes in pons metabolites due to aging using turbo spectroscopic imaging. AJNR Am J Neuroradiol 2014; 35:2099-105. [PMID: 24994832 DOI: 10.3174/ajnr.a4031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE To date, MRS study of both normal and pathologic brains have focused mainly on the supratentorial regions; few studies have investigated the infratentorial regions. However, the pons, an important structure of the brain, is associated with many neurodegenerative diseases and is often damaged by brain trauma. For MRS study of pontine disease, one must obtain MRS reference data on normal metabolite levels in the pons, including data on how these levels vary with age. The aim of this study was to analyze normal, age-related, metabolic changes in the pons by using turbo spectroscopic imaging. MATERIALS AND METHODS Seventy-eight healthy subjects with ages ranging from 5 days to 78 years were included in this study. NAA/Cr, Cho/Cr, and Cho/NAA ratios were measured by using turbo spectroscopic imaging. The 78 cases were divided into 4 groups by age: 0-5, 6-20, 21-50, and older than 50 years. The metabolite levels were compared with observed age-related changes among the groups. RESULTS The normal mean pontine metabolite ratios obtained for the combined age groups were NAA/Cr, 2.44 ± 0.45 (mean); Cho/Cr, 1.93 ± 0.25; and Cho/NAA, 0.83 ± 0.28. Statistically significant differences were found in the NAA/Cr between the 0- to 5- and 6- to 20-year-old groups, and among the 6- to 20-, 21- to 50-, and older than 50-year-old groups. A statistically significant difference was found in Cho/Cr between the 0- to 5- and 6- to 20-year-old subjects; however, no differences were found among the 6- to 20-, 21- to 50-, and older than 50-year-old groups. Statistically significant differences in Cho/NAA were also found among the 4 age groups. The NAA/Cr at birth was low, it rose rapidly at 0-5 years, reaching a peak at approximately 10-20 years, and then gradually decreased. The Cho/Cr decreased rapidly at 0-5 years, then continued to decline, and was stable after 20 years of age. CONCLUSIONS Turbo spectroscopic imaging is a good method for analyzing normal changes in the pons metabolites during growth, maturation, and aging.
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Yang A, Holtzman T, Lee SX, Wong E, Swanson K. ET-68 * ALTERNATING ELECTRIC FIELDS PERTURB THE LOCALIZATION OF CYTOKINETIC FURROW PROTEINS AND CAUSE ABERRANT MITOTIC EXIT. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou255.65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Weber J, Minor D, D'Angelo S, Hodi F, Gutzmer R, Neyns B, Hoeller C, Khushalani N, Miller W, Grob JJ, Lao C, Linette G, Grossmann K, Hassel J, Lorigan P, Maio M, Sznol M, Lambert A, Yang A, Larkin J. A Phase 3 Randomized, Open-Label Study of Nivolumab (Anti-Pd-1; Bms-936558; Ono-4538) Versus Investigator'S Choice Chemotherapy (Icc) in Patients with Advanced Melanoma After Prior Anti-Ctla-4 Therapy. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu438.34] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Xia L, Zhang H, Yang A, Shen Y, Wang W, Wen L, Zhang K, Shi J, Zhang L, Deng J. Note: Design and initial results of a multi-pulsed intense electron beam source. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:066108. [PMID: 24985872 DOI: 10.1063/1.4884342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A multi-pulsed intense electron beam source is introduced, including the design and the initial experimental results. The source can generate a burst of three pulses of intense electron beams with energy of 2-3 MeV and beam intensities of around 2.5 kA. An inductive adder is chosen to generate the pulsed diode voltages and a dispenser cathode is chosen to emit electron beams. The test results indicate that the design of the source is reliable. The multi-pulsed diode voltage is up to 2.5 MV and the beam intensities are more than 2 kA at the exit of the source with small variation.
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El-Shahawy MA, Rasmussen HS, Lavin PT, Yang A, Packham DK, Singh B, Rasmussen HS, Lavin PT, Yang A, Roger SD, Fusaro M, Dalle Carbonare L, Dusso A, Arcidiacono MV, Pasho S, Gallieni M, Ormanji MS, Korkes F, Meca R, Baia LC, Ferraz RR, Heilberg IP, Roger SD, Rasmussen HS, Lavin PT, Yang A, El-Shahawy MA, Nistor I, Bararu I, Apavaloaie MC, Voroneanu L, Donciu MD, Nagler EV, Covic A, Gil HW, Park SH, Hong SY, Ponte B, Alwan H, Pruijm M, Ackermann D, Guessous I, Ehret G, Paccaud F, Mohaupt M, Pechere-Bertschi A, Burnier M, Martin PY, Bochud M, Filiopoulos V, Biblaki D, Manolios N, Karatzas I, Arvanitis D, Vlassopoulos D, Altuntas A, Kidir V, Inal S, Diker S, Cil N, Orhan H, Sezer MT, Verdelho M, Rodrigues N, Ribeiro F, Roger SD, Rasmussen HS, Lavin PT, Yang A, Qunibi WY, Azar H, Ossman R, Flamant M, Chelala D, Ria P, Fabris A, Branco C, Gambaro G, Lupo A, Hao J, Qiu L, Li Y, Li R, Li X, Chen L, Verdesca S, Cucchiari D, Podesta M, Badalamenti S, Veldhuijzen NMH, Gerritsen KGF, Boer WH, Abrahams AC, Packham DK, Rasmussen HS, Lavin PT, Yang A, Qunibi WY, Mangione F, Albrizio P, Sepe V, Esposito P, Manini A, Muciaccia S, Dal Canton A. ACID BASE, ION DISORDERS, LITHISASIS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yang A, Low JJ, Leon A, Rasmussen HS, Therwani SA, Bruschi M, Santucci L, Bonsano M, Candiano G, Ghiggeri GM, Verrina E, Nagaraju SP, Kirpalani DA, Daga G, Shah H, Bhabhe AS, Kirpalani AL, Sarlak H, Bulucu F, Akhan M, Demirbas S, Cakar M, Yamanel L, Lee YK, Lee SM, Cho A, Kim JK, Choi MJ, Shin DH, Yoon JW, Koo JR, Kim HJ, Noh JW, Lee YG, Onuigbo M, Agbasi N, Minako K, Saeko K, Ryosuke U, Shinzo K, Sirou O, Jensen J, Mose FH, Kulik AEO, Bech JN, Pedersen EB. CELL PHYSIOLOGY AND ELECTROLYTES. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kurnatowska I, Grzelak P, Masajtis-Zagajewska A, Kaczmarska M, Stefa czyk L, Vermeer C, Maresz K, Nowicki M, Patel L, Bernard LM, Elder GJ, Leonardis D, Mallamaci F, Tripepi G, D'Arrigo G, Postorino M, Enia G, Caridi G, Marino F, Parlongo G, Zoccali C, Genovese F, Boor P, Papasotiriou M, Leeming DJ, Karsdal MA, Floege J, Delmas-Frenette C, Troyanov S, Awadalla P, Devuyst O, Madore F, Jensen JM, Mose FH, Kulik AEO, Bech JN, Fenton RA, Pedersen EB, Lucisano S, Villari A, Benedetto F, Pettinato G, Cernaro V, Lupica R, Trimboli D, Costantino G, Santoro D, Buemi M, Carmone C, Robben JH, Hadchouel J, Rongen G, Deinum J, Navis GJ, Wetzels JF, Deen PM, Block G, Fishbane S, Shemesh S, Sharma A, Wolf M, Chertow G, Gracia M, Arroyo D, Betriu A, Valdivielso JM, Fernandez E, Cantaluppi V, Medica D, Quercia AD, Dellepiane S, Gai M, Leonardi G, Guarena C, Migliori M, Panichi V, Biancone L, Camussi G, Covic A, Ketteler M, Rastogi A, Spinowitz B, Sprague SM, Botha J, Rakov V, Floege J, Floege J, Ketteler M, Rastogi A, Spinowitz B, Sprague SM, Botha J, Braunhofer P, Covic A, Kaku Y, Ookawara S, Miyazawa H, Ito K, Ueda Y, Hirai K, Hoshino T, Mori H, Nabata A, Yoshida I, Tabei K, El-Shahawy M, Cotton J, Kaupke J, Wooldridge TD, Weiswasser M, Smith WT, Covic A, Ketteler M, Rastogi A, Spinowitz B, Sprague SM, Botha J, Braunhofer P, Floege J, Hanowski T, Jager K, Rong S, Lesch T, Knofel F, Kielstein H, McQuarrie EP, Mark PB, Freel EM, Taylor A, Jardine AG, Wang CL, Du Y, Nan L, :Hess K, Savvaidis A, Lysaja K, Dimkovic N, Floege J, Marx N, Schlieper G, Skrunes R, Larsen KK, Svarstad E, Tondel C, Singh B, Ash SR, Lavin PT, Yang A, Rasmussen HS, Block GA, Egbuna O, Zeig S, Pergola PE, Singh B, Braun A, Yu Y, Sohn W, Padhi D, Block G, Chertow G, Fishbane S, Rodriguez M, Chen M, Shemesh S, Sharma A, Wolf M, Delgado G, Kleber ME, Grammer TB, Kraemer BK, Maerz W, Scharnagl H, Ichii M, Ishimura E, Shima H, Ohno Y, Tsuda A, Nakatani S, Ochi A, Mori K, Inaba M, Filiopoulos V, Manolios N, Hadjiyannakos D, Arvanitis D, Karatzas I, Vlassopoulos D, Floege J, Botha J, Chong E, Sprague SM, Cosmai L, Porta C, Foramitti M, Masini C, Sabbatini R, Malberti F, Elewa U, Nastou D, Fernandez B, Egido J, Ortiz A, Hara S, Tanaka K, Kushiyama A, Sakai K, Sawa N, Hoshino J, Ubara Y, Takaichi K, Bouquegneau A, Vidal-Petiot E, Vrtovsnik F, Cavalier E, Krzesinski JM, Flamant M, Delanaye P, Kilis-Pstrusinska K, Prus-Wojtowicz E, Szepietowski JC, Raj DS, Amdur R, Yamamoto J, Mori M, Sugiyama N, Inaguma D, Youssef DM, Alshal AA, Elbehidy RM, Bolignano D, Palmer S, Navaneethan S, Strippoli G, Kim YN, Park K, Gwoo S, Shin HS, Jung YS, Rim H, Rhew HY, Tekce H, Kin Tekce B, Aktas G, Schiepe F, Draz Y, Rakov V, Yilmaz MI, Siriopol D, Saglam M, Kurt YG, Unal H, Eyileten T, Gok M, Cetinkaya H, Oguz Y, Sari S, Vural A, Mititiuc I, Covic A, Kanbay M, Filiopoulos V, Manolios N, Hadjiyannakos D, Arvanitis D, Karatzas I, Vlassopoulos D, Okarska-Napierala M, Ziolkowska H, Pietrzak R, Skrzypczyk P, Jankowska K, Werner B, Roszkowska-Blaim M, Cernaro V, Trifiro G, Lorenzano G, Lucisano S, Buemi M, Santoro D, Krause R, Fuhrmann I, Degenhardt S, Daul AE, Sallee M, Dou L, Cerini C, Poitevin S, Gondouin B, Jourde-Chiche N, Brunet P, Dignat-George F, Burtey S, Massimetti C, Achilli P, Madonna MPP, Muratore MTT, Fabbri GDD, Brescia F, Feriozzi S, Unal HU, Kurt YG, Gok M, Cetinkaya H, Karaman M, Eyileten T, Vural A, Oguz Y, Y lmaz MI, Sugahara M, Sugimoto I, Aoe M, Chikamori M, Honda T, Miura R, Tsuchiya A, Hamada K, Ishizawa K, Saito K, Sakurai Y, Mise N, Gama-Axelsson T, Quiroga B, Axelsson J, Lindholm B, Qureshi AR, Carrero JJ, Pechter U, Raag M, Ots-Rosenberg M, Vande Walle J, Greenbaum LA, Bedrosian CL, Ogawa M, Kincaid JF, Loirat C, Liborio A, Leite TT, Neves FMDO, Torres De Melo CB, Leitao RDA, Cunha L, Filho R, Sheerin N, Loirat C, Greenbaum L, Furman R, Cohen D, Delmas Y, Bedrosian CL, Legendre C, Koibuchi K, Aoki T, Miyagi M, Sakai K, Aikawa A, Pozna Ski P, Sojka M, Kusztal M, Klinger M, Fakhouri F, Bedrosian CL, Ogawa M, Kincaid JF, Loirat C, Heleniak Z, Aleksandrowicz E, Wierblewska E, Kunicka K, Bieniaszewski L, Zdrojewski Z, Rutkowski B. CKD PATHOPHYSIOLOGY AND CLINICAL STUDIES. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Naing K, Li C, Lee L, Monjazeb A, Yang A, Borys D, Canter R. Perioperative Radiotherapy is Associated with Improved Survival among Patients with Synovial Sarcoma: A SEER Analysis. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lin S, Huang H, Liu X, Li Q, Yang A, Zhang Q, Guo Z, Chen Y. Treatments for complications of tracheal sleeve resection for papillary thyroid carcinoma with tracheal invasion. Eur J Surg Oncol 2014; 40:176-81. [DOI: 10.1016/j.ejso.2013.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 11/11/2013] [Accepted: 12/12/2013] [Indexed: 12/16/2022] Open
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Kumar S, Dick EJ, Bommineni YR, Yang A, Mubiru J, Hubbard GB, Owston MA. Reovirus-associated meningoencephalomyelitis in baboons. Vet Pathol 2013; 51:641-50. [PMID: 23892376 DOI: 10.1177/0300985813497487] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Baboon orthoreovirus (BRV) is associated with meningoencephalomyelitis (MEM) among captive baboons. Sporadic cases of suspected BRV-induced MEM have been observed at Southwest National Primate Research Center (SNPRC) for the past 20 years but could not be confirmed due to lack of diagnostic assays. An immunohistochemistry (IHC)-based assay using an antibody against BRV fusion-associated small transmembrane protein p15 and a conventional polymerase chain reaction (PCR)-based assay using primers specific for BRV were developed to detect BRV in archived tissues. Sixty-eight cases of suspected BRV-induced MEM from 1989 through 2010 were tested for BRV, alphavirus, and flavivirus by IHC. Fifty-nine of 68 cases (87%) were positive for BRV by immunohistochemistry; 1 tested positive for flavivirus (but was negative for West Nile virus and St Louis encephalitis virus by real-time PCR), and 1 virus isolation (VI) positive control tested negative for BRV. Sixteen cases (9 BRV-negative and 7 BRV-positive cases, by IHC), along with VI-positive and VI-negative controls, were tested by PCR for BRV. Three (of 9) IHC-negative cases tested positive, and 3 (of 7) IHC-positive cases tested negative by PCR for BRV. Both IHC and PCR assays tested 1 VI-positive control as negative (sensitivity: 75%). This study shows that most cases of viral MEM among baboons at SNPRC are associated with BRV infection, and the BRV should be considered a differential diagnosis for nonsuppurative MEM in baboons.
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Bashir S, Gaofeng J, Joshi A, Yang A, Yemelyanova A, Caputo T, Holcomb K, Ellenson L, Gupta D. Molecular alterations of PIK3CA in uterine malignant mesodermal mixed tumors and clear cell carcinomas. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Rosenblatt L, Curtis JR, Yang A, Hebden T. OP0301 Outcomes of Patients with Rheumatoid Arthritis and Comorbid Hyperlipidaemia. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Guo Y, Shi M, Yang A, Hu C, Luo R, Zhang Y, Zhou L, Cheng Y, Li T, Shi Y. PO-078: Cetuximab Plus Chemotherapy for Asian Patients with Recurrent and/or Metastatic Head and Neck Cancer. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)34697-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yang A, Brewster MJ, Lanari MC, Tume RK. Effect of vitamin E supplementation on α-tocopherol and β-carotene concentrations in tissues from pasture- and grain-fed cattle. Meat Sci 2012; 60:35-40. [PMID: 22063103 DOI: 10.1016/s0309-1740(01)00102-4] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2000] [Revised: 03/26/2001] [Accepted: 03/26/2001] [Indexed: 10/18/2022]
Abstract
The effects of dietary vitamin E supplementation of grain-fed cattle on lipid oxidation and meat colour have been extensively investigated, but little attention has been given to pasture-fed cattle where meat is likely to contain naturally high amounts of α-tocopherol and carotenoids. In the work described, we evaluated the effects of pasture-feeding alone and with vitamin E supplementation on tissue levels of anti-oxidants and compared the findings with those obtained for grain-fed cattle with and without supplementation. Sorghum was the major component of the grained-based ration. α-Tocopherol concentrations in plasma, muscle and fat tissues of pasture-fed cattle were not affected by vitamin E supplementation (2500 IU/head/day for 132 days prior to slaughter) while those of grain-fed cattle increased significantly. The α-tocopherol concentrations in the supplemented grain-fed cattle were similar in muscle and liver to pasture-fed animals but were lower in their fat (P<0.05). The major carotenoid present in all tissues studied from pasture-fed was β-carotene and its contents in plasma, liver, fat and muscles were decreased (P<0.05) by supplementation with vitamin E. Carotenoids were essentially absent in grain-fed cattle except for small amounts in liver. The implication of this study for the meat industry is that cattle grazed on good pasture can achieve concentrations of α-tocopherol in muscles and other tissues at least as high as those obtained by supra-nutritional supplementation of grain-fed cattle with vitamin E. However, α-tocopherol supplementation of pasture-fed cattle reduced tissue concentrations of β-carotene, which would reduce carcase fat yellowness and make pasture-fed cattle more acceptable to some Asian markets.
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Yang A, Lanari MC, Brewster M, Tume RK. Lipid stability and meat colour of beef from pasture- and grain-fed cattle with or without vitamin E supplement. Meat Sci 2012; 60:41-50. [PMID: 22063104 DOI: 10.1016/s0309-1740(01)00103-6] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2000] [Revised: 03/26/2001] [Accepted: 03/26/2001] [Indexed: 10/17/2022]
Abstract
Meat from pasture-fed cattle can have high contents of α-tocopherol and other anti-oxidants originating from naturally occurring compounds present in grasses. However, meat from pasture-fed cattle may have an increased demand for endogenous anti-oxidants because of its high content of polyunsaturated fatty acids, which in turn, may affect its colour and lipid stability. In the work described, we evaluated the effects of pasture-feeding alone and with vitamin E supplementation and compared the findings with those obtained for grain-fed cattle (predominantly sorghum) with and without supplementation. Within each nutritional background, vitamin E supplementation did not alter meat colour or colour stability of fresh or 47-day aged muscle during 7-day aerobic storage. However, both control and supplemented grain-fed product had better meat colour (more redness) compared with meat from grass-fed cattle. These differences in redness between pasture- and grain-fed fresh beef were not apparent after ageing. The treatments did not affect the lipid stability of fresh meat during aerobic storage; however, supplementation reduced (P<0.01) lipid oxidation in grain-fed aged beef compared with pasture-fed aged beef, despite both having similar α-tocopherol contents. Pasture-fed beef had more linolenic acid, less linoleic acid and, overall, was more polyunsaturated than grain-fed beef (P<0.05). In summary, vitamin E supplementation of pasture-fed cattle did not alter muscle tocopherol contents but pasture-fed beef (both control and supplemented) was more susceptible to lipid oxidation following ageing than vitamin E supplemented grain-fed beef.
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Yang A, Larsen TW, Powell VH, Tume RK. A comparison of fat composition of Japanese and long-term grain-fed Australian steers. Meat Sci 2012; 51:1-9. [PMID: 22061530 DOI: 10.1016/s0309-1740(98)00065-5] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/1997] [Revised: 05/29/1997] [Accepted: 06/03/1998] [Indexed: 11/27/2022]
Abstract
Subcutaneous and intermuscular fat samples were collected from carcases of four major breeds of steers in Japan: Wagyu, Wagyu × Angus, Dairy and Murray Grey. For comparison, we also collected subcutaneous fat samples from carcases of long-term grain-fed (350-455 days) Angus, Jersey and Angus × Hereford steers, and short-term grain-fed (70-100 days) Murray Grey steers in Australia. Fatty acid profiles were determined on all samples and triacylglycerol composition, thermal properties, fat cell size and lipid and connective tissue contents were determined on representative samples. Compared with the Japanese samples which were soft to very soft when assessed subjectively, samples of Australian fat were generally hard and somewhat fibrous in appearance. These tactile and visual differences in the hardness of the subcutaneous fat between the Japanese and Australian beef were confirmed by the physical and chemical properties determined. Markedly different melting patterns were observed for the Australian and Japanese fat samples. The Japanese fat had considerably less saturated and more unsaturated fatty acids resulting in much higher unsaturated/saturated ratios (1.9) compared with the Australian samples (1.0). This resulted primarily from the high contents of oleic and palmitoleic acids and the low content of stearic acid of the Japanese samples. The triacylglycerols from the Japanese fat had considerably less tri-saturated and di-saturated fatty acids and more di-monounsaturated and tri-monounsaturated fatty acids in their structure. Differences were observed when the Japanese subcutaneous fat samples were grouped by their meat quality grades. From Grade 5 to Grade 2, there was a significant decrease in marbling score (9.3 to 2.5) and in the ratio of palmitoleic to stearic acid (1.7 to 1.2) and an increase in the connective tissue content (1.5 to 2.1%). Compared with subcutaneous fat, intermuscular fat had a higher content of saturated and a lower content of unsaturated fatty acids resulting in a lower ratio of unsaturated to saturated fatty acids and of palmitoleic to stearic acid. It was concluded that the fatty acid composition and the triacylglycerol structure of fat plays the predominant role in determining the lustre, texture and properties of fat desired by the Japanese market: the soft character of fat from Japanese cattle results primarily from its low content of stearic acid and consequent lower melting temperatures. Fat cell size and the lipid and connective tissue contents of fat appear to be less important.
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Tey F, Tan M, Lee T, Yang A. EFFECTIVENESS OF 2D CAMERA SYSTEM IN ASSISTING OPERATORS IN VISUAL TASKS. J Vis 2012. [DOI: 10.1167/12.9.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Yang A, Lin ST, Tey F, Tan M, Nah G. Proportion of Cohort Population that May Benefit from Lasik. J Vis 2012. [DOI: 10.1167/12.9.1353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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