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https://www.readbyqxmd.com/read/28550815/selection-for-intramuscular-fat-and-lean-meat-yield-will-improve-the-bloomed-colour-of-australian-lamb-loin-meat
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/28485052/evaluation-of-the-thermal-property-of-bovine-intramuscular-adipose-tissue-using-differential-scanning-calorimetry
#13
Noriyuki Kimura, Nana Nishimura, Nagako Iwama, Yoshito Aihara, Yasuki Ogawa, Yuji Miyaguchi
The thermal property of bovine intramuscular adipose tissue (IAT) was evaluated using differential scanning calorimetry (DSC) and compared with the melting point temperature (MP) of the fat extract of IAT, which was measured using the slip point method. The beef samples were classified according to the beef marbling score (BMS). Beef with a high BMS contained less protein than that with middle or low BMS. Beef with a high BMS contained significantly more fat than that with a low BMS (P < 0.05). The endothermic point temperature (EP) of IAT, measured by DSC, was significantly higher than the MP of IAT fat (P < 0...
May 8, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28476930/mitochondrial-targeted-catalase-protects-against-high-fat-diet-induced-muscle-insulin-resistance-by-decreasing-intramuscular-lipid-accumulation
#14
Hui-Young Lee, Jae Sung Lee, Tiago Alves, Warren Ladiges, Peter S Rabinovitch, Michael J Jurczak, Cheol Soo Choi, Gerald I Shulman, Varman T Samuel
We explored the role of reactive oxygen species (ROS) in the pathogenesis of muscle insulin resistance by assessing insulin action in vivo with a hyperinsulinemic-euglycemic clamp in mice expressing a mitochondrially-targeted catalase (MCAT) that were fed regular chow (RC), a high-fat diet (HFD), or undergoing an acute infusion of a lipid emulsion. RC MCAT mice were similar to littermate wild-type (WT) mice. However, HFD MCAT mice were protected from diet-induced insulin resistance. In contrast, an acute lipid infusion caused muscle insulin resistance in both MCAT and WT mice...
May 5, 2017: Diabetes
https://www.readbyqxmd.com/read/28465593/nmr-based-metabolomics-for-simultaneously-evaluating-multiple-determinants-of-primary-beef-quality-in-japanese-black-cattle
#15
Yoshinori Kodani, Takuya Miyakawa, Tomohiko Komatsu, Masaru Tanokura
Analytical methodologies to comprehensively evaluate beef quality are increasingly needed to accelerate improvement in both breeding and post-mortem processing. Consumer palatability towards beef is generally attributed to tenderness, flavor, and/or juiciness. These primary qualities are modified by post-mortem aging and the crude content and fatty acid composition of intramuscular fat. In this study, we report a nuclear magnetic resonance (NMR)-based metabolic profiles of Japanese Black cattle to evaluate the compositional attributes of intramuscular fat and the long-term post-mortem aging...
May 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28464115/consumer-sensory-evaluation-and-chemical-composition-of-beef-gluteus-medius-and-triceps-brachii-steaks-from-cattle-finished-on-forage-or-concentrate-diets
#16
A Chail, J F Legako, L R Pitcher, R E Ward, S Martini, J W MacAdam
The objective of this study was to assess the impact of cattle finishing diet and muscle type on meat quality. Consumer sensory response, proximate composition, Warner-Bratzler shear force (WBSF), fatty acid composition, and volatile compounds were assessed from the gluteus medius (GM) and triceps brachii (TB) muscles of cattle ( = 6 per diet) which were grain-finished (USUGrain) on conventional feedlot or 2 forage diets, a perennial legume, birdsfoot trefoil-finished (USUBFT; ), and grass-finished (USUGrass; )...
April 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28463751/influence-of-physicochemical-characteristics-and-high-pressure-processing-on-the-volatile-fraction-of-iberian-dry-cured-ham
#17
Nerea Martínez-Onandi, Ana Rivas-Cañedo, Marta Ávila, Sonia Garde, Manuel Nuñez, Antonia Picon
The volatile fraction of 30 Iberian dry-cured hams of different physicochemical characteristics and the effect of high pressure processing (HPP) at 600MPa on volatile compounds were investigated. According to the analysis of variance carried out on the levels of 122 volatile compounds, intramuscular fat content influenced the levels of 8 benzene compounds, 5 carboxylic acids, 2 ketones, 2 furanones, 1 alcohol, 1 aldehyde and 1 sulfur compound, salt concentration influenced the levels of 1 aldehyde and 1 ketone, salt-in-lean ratio had no effect on volatile compounds, and water activity influenced the levels of 3 sulfur compounds, 1 alcohol and 1 aldehyde...
April 25, 2017: Meat Science
https://www.readbyqxmd.com/read/28462759/reduced-protein-diets-increase-intramuscular-fat-of-psoas-major-a-red-muscle-in-lean-and-fatty-pig-genotypes
#18
M S Madeira, P A Lopes, P Costa, D Coelho, C M Alfaia, J A M Prates
The present study aims to assess the effects of pig's genotype (lean v. fatty) and dietary protein level (control v. reduced) on intramuscular fat (IMF) content, fatty acid composition and fibre profile of psoas major, a representative red muscle in pig's carcass scarcely studied relative to white longissimus lumborum. The experiment was conducted on 40 intact male pigs (20 Alentejana purebred and 20 Large White×Landrace×Pietrain crossbred) from 60 to 93 kg of live weight. Pigs were divided and allocated to four dietary groups: control protein diet equilibrated for lysine (17...
May 2, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28448837/genetic-analysis-of-meat-quality-traits-in-maternal-lines-of-rabbit-and-their-diallel-cross
#19
C Mínguez, J P Sánchez, P Hernández, M Ragab, A G El Nagar, M Baselga
Young rabbits, the dams of which came from a full diallel cross among four maternal lines (A, V, H and LP) and the sires from a single paternal line (R), that produce sixteen genetic groups, was carried out to evaluate the genetic groups and to estimate the crossbreeding genetic parameters of meat quality. The meat quality traits were recorded by NIRS from a sample of 285 longissimus lumborum muscles. Crossbreeding parameters were estimated according to Dickerson model. No differences in protein were found...
April 10, 2017: Meat Science
https://www.readbyqxmd.com/read/28439938/intramuscular-fat-infiltration-evaluated-by-magnetic-resonance-imaging-predicts-the-extensibility-of-the-supraspinatus-muscle
#20
Hugo Giambini, Taku Hatta, Gorny R Krzysztof, Per Widholm, Anette Karlsson, Olof D Leinhard, Mark C Adkins, Chunfeng Zhao, Kai-Nan An
INTRODUCTION: Rotator cuff (RC) tears result in muscle atrophy and fat infiltration within the RC muscles. An estimation of muscle quality and deformation, or extensibility, is useful in selecting the most appropriate surgical procedure. We determined if non-invasive quantitative assessment of intramuscular fat using MRI could be used to predict extensibility of the supraspinatus (SSP) muscle. METHODS: Seventeen cadaveric shoulders were imaged to assess intramuscular fat infiltration...
April 25, 2017: Muscle & Nerve
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