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https://www.readbyqxmd.com/read/28644988/effect-of-marbling-on-volatile-generation-oral-breakdown-and-in-mouth-flavor-release-of-grilled-beef
#1
Damian Frank, Kornelia Kaczmarska, Janet Paterson, Udayasika Piyasiri, Robyn Warner
While the positive effect of intramuscular fat (IMF) on beef tenderness is well-established, its role in flavor generation and flavor release is less defined. To increase understanding, real-time volatile generation was monitored during grilling of beefsteaks (grass and grain-fed Angus and grass-fed Wagyu) with different amounts of IMF by proton transfer reaction mass spectrometry. Volatile concentration increased significantly (p<0.001) when the IMF was >~10%, but did not differ (p>0.05) at lower IMF levels (5...
June 15, 2017: Meat Science
https://www.readbyqxmd.com/read/28630415/integrating-genome-and-transcriptome-profiling-for-elucidating-the-mechanism-of-muscle-growth-and-lipid-deposition-in-pekin-ducks
#2
Liyuan Wang, Xiangxiang Li, Jun Ma, Yawen Zhang, Hao Zhang
Muscle growth and lipid deposition are co-ordinately regulated processes. Cherry Valley Pekin duck is a lean-type duck breed with high growth rate, whereas the native Pekin duck of China has high lipid deposition. Phenotypic analysis showed that native Pekin ducks have smaller fibre diameter and larger density in the breast muscle at 3 weeks of age and higher intramuscular fat content at 6 weeks of age than those in Cherry Valley Pekin ducks. We detected 17 positively selected genes (PSGs) by comparing genes mainly involved with muscle organ development, muscle contraction, peroxisome proliferator activated receptor signalling pathway, and fatty acid metabolism...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28618093/influence-of-gender-bmi-and-body-shape-on-theoretical-injection-outcome-at-the-ventrogluteal-and-dorsogluteal-sites
#3
Theresa A Larkin, Elfriede Ashcroft, Blake A Hickey, Asmahan Elgellaie
AIMS AND OBJECTIVES: This study aimed to determine the influences of gender, BMI and observed body shape (OBS) on subcutaneous fat and muscle thicknesses, and theoretical injection outcome, at the ventrogluteal and dorsogluteal intramuscular injection sites. BACKGROUND: Debate continues as to whether the dorsogluteal or ventrogluteal injection site is more reliable for a successful intramuscular injection outcome. Subcutaneous fat and muscle thicknesses at the injection site are direct determinants of intramuscular injection outcome...
June 15, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28604251/the-effect-of-a-vegetarian-vs-conventional-hypocaloric-diabetic-diet-on-thigh-adipose-tissue-distribution-in-subjects-with-type-2-diabetes-a-randomized-study
#4
Hana Kahleova, Marta Klementova, Vit Herynek, Antonin Skoch, Stepan Herynek, Martin Hill, Andrea Mari, Terezie Pelikanova
OBJECTIVE: The aim of our study was to compare the effects of a vegetarian and a conventional diet on thigh adipose tissue distribution in subjects with type 2 diabetes (T2D). METHODS: Seventy-four subjects with T2D were randomly assigned to either follow a vegetarian diet (V, n = 37) or a control group who followed an isocaloric conventional anti-diabetic diet (C, n = 37). Both diets were calorie restricted (-500 kcal/day). To measure insulin sensitivity, the hyperinsulinemic (1 mU...
June 10, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28602574/characteristics-of-hanwoo-cattle-and-health-implications-of-consuming-highly-marbled-hanwoo-beef
#5
REVIEW
Seon-Tea Joo, Young-Hwa Hwang, Damian Frank
This review addresses the unique characteristics of Hanwoo cattle and potential health implications of consuming highly marbled Hanwoo beef. The Hanwoo breed has high genetic potential for accumulating intramuscular fat (IMF) and producing highly marbled beef. The high level of marbling is achieved through increasing levels of concentrated feed with an extended finishing period. In response to consumer preferences, the level of marbling of Hanwoo beef has been increasing. The IMF content can be manipulated depending on the feeding duration, finishing diet, and genotype...
June 6, 2017: Meat Science
https://www.readbyqxmd.com/read/28585329/effect-of-linseed-supplementation-and-slaughter-age-on-meat-quality-of-grazing-crossbred-galician-x-burguete-foals
#6
Rubén Domínguez, Mirian Pateiro, Santiago Crecente, Marta Ruiz, María V Sarriés, José M Lorenzo
BACKGROUND: The aim of this study was to assess the effect of finishing diet (control concentrate vs. linseed concentrate) and slaughter age (13 vs. 26 months) on meat and nutritional quality of foal meat. For this study, 46 foals from crossing Galicia Mountain x Burguete breeds were used. RESULTS: The obtained results showed that slaughter age had influence on chemical composition and colour parameters. Foals slaughtered at the age of 13 months had lower content of intramuscular fat and higher cholesterol contents than those slaughtered at 26 months of age...
June 5, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28558935/local-muscle-cooling-does-not-impact-expression-of-mitochondrial-related-genes
#7
Robert Shute, Matthew Heesch, Terence Laursen, Dustin Slivka
Recovery that takes place in a cold environment after endurance exercise elevates PGC-1α mRNA whereas ERRα and NRF2 mRNA expression are inhibited. However, the effect of local skeletal muscle cooling on mitochondrial-related gene expression is unknown. PURPOSE: To determine the impact of local skeletal muscle cooling during recovery from an acute bout of exercise on mitochondrial-related gene expression. METHODS: Recreationally-trained male cyclists (n=8, age 25±3 y, height 181±6cm, weight 79±8kg, 12...
July 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28554651/fatty-acid-volatile-and-sensory-characteristics-of-beef-as-affected-by-grass-silage-or-pasture-in-the-bovine-diet
#8
Gebrehawerya B Mezgebo, Frank J Monahan, Mark McGee, Edward G O'Riordan, Ian R Richardson, Nigel P Brunton, Aidan P Moloney
Fatty acids, volatile compounds and sensory attributes of beef from bulls fed concentrates to slaughter (C), grass silage for 120days (GS) followed by C (GSC), or GS followed by 100days at pasture and then C (GSPC), and slaughtered at 3 target carcass weights, were determined. Total intramuscular fat (IMF) was lower for GSPC than for GSC and C. C18:3n-3 concentration and polyunsaturated fatty acid (PUFA) to saturated fatty acid (SFA) ratio were higher and C18:2n-6 and monounsaturated fatty acid concentrations and n-6:n-3 PUFA ratio lower for GSPC than C...
November 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28550815/selection-for-intramuscular-fat-and-lean-meat-yield-will-improve-the-bloomed-colour-of-australian-lamb-loin-meat
#9
H B Calnan, R H Jacob, D W Pethick, G E Gardner
The colour of bloomed m. longissimus was measured 24h post slaughter for 8165 lamb carcasses produced over 5years across 8 sites in Australia. Intramuscular fat across a 2 to 8% range and shortloin fat weight were positively associated with meat lightness (L*), redness (a*), yellowness (b*), hue and chroma (P<0.01). Shortloin muscle weight was negatively associated with these meat colour parameters (P<0.01), although this was largely accounted for by correlated changes in intramuscular fat (P<0.01)...
May 2, 2017: Meat Science
https://www.readbyqxmd.com/read/28546468/influence-of-maximal-fat-oxidation-on-long-term-weight-loss-maintenance-in-humans
#10
Sune Dandanell, Karina Husted, Signe Amdisen, Andreas Vigelsø, Flemming Dela, Steen Larsen, Jorn Wulff Helge
Impaired maximal fat oxidation has been linked to obesity and weight regain after weight loss. The aim was to investigate the relationship between maximal fat oxidation (MFO) and long-term weight loss maintenance. Eighty subjects (mean(SD)) (Age: 36(13) yrs; BMI: 38(1) kg/m(2)) were recruited from a total of 2420 former participants of an 11-12-week lifestyle intervention. Three groups were established based on % weight loss at follow-up (5.3(3.3) yrs): Clinical weight loss maintenance (CWL) >10% weight loss, moderate weight loss (MWL) 1-10%, and weight regain (WR)...
May 25, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28539828/increased-expression-of-thyroid-hormone-responsive-protein-thrsp-is-the-result-but-not-the-cause-of-higher-intramuscular-fat-content-in-cattle
#11
Lisa Schering, Elke Albrecht, Katrin Komolka, Christa Kühn, Steffen Maak
Thyroid hormone responsive protein (THRSP) is known to be involved in lipogenic processes in rodents. In cattle, THRSP could be a potential molecular marker for intramuscular fat (IMF) deposition since mRNA abundance was frequently found to be increased in skeletal muscle with high IMF content compared to those with low IMF. The aim of this study was to elucidate the background of this differential expression and to evaluate the role of THRSP as candidate for increased IMF content in cattle. By combination of mRNA and protein analyses, we could demonstrate that THRSP is present mainly in nuclei of adipose tissue, in intramuscular fat cells and associated cells, and in cells of the portal triad of liver, whereas muscle cells did not express THRSP...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28538106/intramuscular-triglyceride-content-precedes-impaired-glucose-metabolism-without-evidence-for-mitochondrial-dysfunction-during-early-development-of-a-diabetic-phenotype
#12
Zachary J Callahan, Michael James Oxendine, Paul J Schaeffer
The incidence of type 2 diabetes is highly correlated with obesity; however, there is a lack of research elucidating the temporal progression. Transgenic FVB/N UCP-dta mice, which develop a diabetic phenotype, and their non-transgenic littermates were fed either a high-fat or normal-chow diet and were studied at 6, 9, 12, 15, 18, 21, and 24 weeks of age in order to test the hypothesis that increased lipid accumulation in skeletal muscle causes mitochondrial dysfunction, leading to the development of insulin resistance...
May 24, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28535682/ctrp6-regulates-porcine-adipocyte-proliferation-and-differentiation-by-the-adipor1-mapk-signaling-pathway
#13
Wenjing Wu, Jin Zhang, Chen Zhao, Yunmei Sun, Pang Wei-Jun, Gongshe Yang
Intramuscular fat (IMF) and subcutaneous fat (SCF), which are modulated by adipogenesis of intramuscular and subcutaneous adipocytes, play key roles in pork quality. C1q/tumor necrosis factor-related protein 6 (CTRP6), an adipokine , plays an important role in the differentiation of 3T3-L1 cells. However, the effect and regulatory mechanisms of CTRP6 on porcine adipogenesis, and whether CTRP6 has the same effect on intramuscular and subcutaneous adipocytes are still unknown. Here, we found that CTRP6 significantly inhibited both adipocyte proliferation assessed by proliferative marker expression, but CTRP6 decreased the proliferation rate of intramuscular adipocytes (IM) to a greater extent than subcutaneous adipocytes (SC)...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28533262/acute-and-chronic-changes-in-rat-soleus-muscle-after-high-fat-high-sucrose-diet
#14
Kelsey H Collins, David A Hart, Ian C Smith, Anthony M Issler, Raylene A Reimer, Ruth A Seerattan, Jaqueline L Rios, Walter Herzog
The effects of obesity on different musculoskeletal tissues are not well understood. The glycolytic quadriceps muscles are compromised with obesity, but due to its high oxidative capacity, the soleus muscle may be protected against obesity-induced muscle damage. To determine the time-course relationship between a high-fat/high-sucrose (HFS) metabolic challenge and soleus muscle integrity, defined as intramuscular fat invasion, fibrosis and molecular alterations over six time points. Male Sprague-Dawley rats were fed a HFS diet (n = 64) and killed at serial short-term (3 days, 1 week, 2 weeks, 4 weeks) and long-term (12 weeks, 28 weeks) time points...
May 2017: Physiological Reports
https://www.readbyqxmd.com/read/28528296/novel-ultrasound-approach-for-measuring-marbling-in-pork
#15
Agnieszka Ludwiczak, Marek Stanisz, Dariusz Lisiak, Piotr Janiszewski, Marta Bykowska, Joanna Składanowska, Piotr Ślósarz
An ultrasound examination was done on the m. longissimus lumborum, between the 10th and the 11th thoracic vertebra, on two sides (inside and outside the thoracic cavity) of the left half-carcasses of 162 fatteners. The carcasses were classified for lean meat percentage using the SEUROP system. The R pig carcasses (47.7% lean) had the thickest backfat (30.6mm; P≤0.01) and the highest content of intramuscular fat (IMF=2.28%; P≤0.01). More artifacts-free images were collected from the inside compared to the outside of the pig carcasses (90...
May 12, 2017: Meat Science
https://www.readbyqxmd.com/read/28522731/effect-of-metformin-on-bioactive-lipid-metabolism-in-insulin-resistant-muscle
#16
Piotr Zabielski, Marta Chacinska, Karol Charkiewicz, Marcin Baranowski, Jan Gorski, Agnieszka U Blachnio-Zabielska
Intramuscular accumulation of bioactive lipids leads to insulin resistance and type 2 diabetes (T2D). There is lack of consensus concerning which of the lipid mediators has the greatest impact on muscle insulin action in vivo Our aim was to elucidate the effects of high-fat diet (HFD) and metformin (Met) on skeletal muscle bioactive lipid accumulation and insulin resistance (IR) in rats. We employed a [U-(13)C]palmitate isotope tracer and mass spectrometry to measure the content and fractional synthesis rate (FSR) of intramuscular long-chain acyl-CoA (LCACoA), diacylglycerols (DAG) and ceramide (Cer)...
June 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28515638/fatty-acid-profiles-meat-quality-and-sensory-palatability-of-grain-fed-and-grass-fed-beef-from-hanwoo-american-and-australian-crossbred-cattle
#17
Young-Hwa Hwang, Seon-Tea Joo
Fatty acid profiles in relation to meat quality traits and sensory palatability of grain-fed and grass-fed beef from Hanwoo, American, and Australian crossbred cattle were examined in this study. There were significant (p<0.001) differences in fat content and fatty acid compositions between grain-fed and grass-fed beef. Grain-fed Hanwoo had significantly (p<0.001) lower saturated fatty acid (SFA) proportion but higher monounsaturated fatty acid (MUFA) proportion compared to grass-fed cattle. The proportion of oleic acid in grain-fed Hanwoo was significantly (p<0...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28502967/neck-and-occipital-pain-caused-by-deep-cervical-intramuscular-lipoma-a-surgical-case
#18
Kazunari Kogure, Michio Yamazaki, Tomonori Tamaki, Yoji Node, Akio Morita
A lipoma is a slow-growing, benign tumor and is usually asymptomatic; hence, surgical intervention can often be avoided in patients with these tumors in the cervical and cranial area. Lipomas arise most commonly in the subcutaneous fat, but occasionally in muscle tissue. Intramuscular lipomas in the cervico-cranial area have rarely been reported. We describe here a patient with a large intramuscular lipoma in the deep cervical tissue. The patient experienced troublesome pain in the neck and occipital area, and surgical treatment was therefore suggested...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28497534/effects-of-testosterone-replacement-therapy-on-metabolic-syndrome-among-japanese-hypogonadal-men-a-subanalysis-of-a-prospective-randomised-controlled-trial-earth-study
#19
K Shigehara, H Konaka, T Nohara, K Izumi, Y Kitagawa, Y Kadono, T Iwamoto, E Koh, A Mizokami, M Namiki
We investigated the effects of testosterone replacement therapy (TRT) on metabolic factors among hypogonadal men with a metabolic syndrome. From the study population of the EARTH study, which was a randomised controlled study in Japan, 65 hypogonadal patients with a metabolic syndrome, comprising the TRT group (n = 32) and controls (n = 33), were included in this study analysis. The TRT group was administered 250 mg of testosterone enanthate as an intramuscular injection every 4 weeks for 12 months...
May 12, 2017: Andrologia
https://www.readbyqxmd.com/read/28487215/micturition-dysfunction-in-four-month-old-ovariectomized-rats-effects-of-testosterone-replacement
#20
Sandra M Bonilla-Becerra, Mariana G de Oliveira, Fabiano B Calmasini, Julio A Rojas-Moscoso, Angelina Zanesco, Edson Antunes
AIMS: Androgen deficiency has been implicated in urological complications of postmenopausal women. This study examined the effects of testosterone replacements on the lower urinary tract dysfunction in 4-month old ovariectomized (OVX) rats. MAIN METHODS: Sprague-Dawley female rats were OVX bilaterally. Three months later, rats received single intramuscular injections of testosterone undecanoate. Cystometric study, and bladder and urethra smooth muscle reactivities were evaluated...
May 6, 2017: Life Sciences
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