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https://www.readbyqxmd.com/read/28298673/single-step-extraction-and-derivatization-of-intramuscular-lipids-for-fatty-acid-ultra-fast-gc-analysis-application-on-pig-thigh
#1
Eleonora Laura De Paola, Giuseppe Montevecchi, Francesca Masino, Andrea Antonelli, Domenico Pietro Lo Fiego
Two different methods for single step transesterification from pig meat without fat extraction have been tested. Freeze-drying of the meat with and without anhydrous salt, followed by a base-catalyzed transmethylation (KOH/MeOH) was carried out. Both methods were compared with the standard Folch procedure of fat extraction followed by transmethylation. The methods were tested on a complete sample set of biceps femoris of pig thigh, used for the production of dry-cured ham. The set was divided in three subgroups according to total fat content...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28280846/obesity-type-2-diabetes-and-bone-in-adults
#2
REVIEW
Jennifer S Walsh, Tatiane Vilaca
In an increasingly obese and ageing population, type 2 diabetes (T2DM) and osteoporotic fracture are major public health concerns. Understanding how obesity and type 2 diabetes modulate fracture risk is important to identify and treat people at risk of fracture. Additionally, the study of the mechanisms of action of obesity and T2DM on bone has already offered insights that may be applicable to osteoporosis in the general population. Most available evidence indicates lower risk of proximal femur and vertebral fracture in obese adults...
March 9, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28273627/ventrogluteal-versus-dorsogluteal-site-selection-a-cross-sectional-study-of-muscle-and-subcutaneous-fat-thicknesses-and-an-algorithm-incorporating-demographic-and-anthropometric-data-to-predict-injection-outcome
#3
Theresa A Larkin, Elfriede Ashcroft, Asmahan Elgellaie, Blake A Hickey
BACKGROUND: The dorsogluteal and ventrogluteal intramuscular injection sites both have their use in clinical practice; however, it has not been established in whom one or the other should be preferentially targeted or avoided. There is a need for an evidence-based approach towards site selection for a successful intramuscular injection outcome and to avoid unwanted injection outcomes of inadvertent subcutaneous injection or bone contact. Injection outcome is dependent on injection site subcutaneous fat thickness and muscle thickness; these are likely influenced by gender and anthropometry...
February 22, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28272927/muscle-degeneration-associated-with-rotator-cuff-tendon-release-and-or-denervation-in-sheep
#4
Christian Gerber, Dominik C Meyer, Martin Flück, Paola Valdivieso, Brigitte von Rechenberg, Mario C Benn, Karl Wieser
BACKGROUND: The effect of an additional neurological injury (suprascapular nerve traction injury) to a chronically retracted rotator cuff muscle is incompletely understood and warrants clarification. PURPOSE: To investigate the microscopic and macroscopic muscle degeneration patterns caused by tendon release and/or muscle denervation in a sheep rotator cuff model. STUDY DESIGN: Controlled laboratory study. METHODS: Infraspinatus muscle biopsy specimens (for histological analysis) were obtained from 18 Swiss alpine sheep before and 16 weeks after release of the infraspinatus tendon (tenotomy [T] group; n = 6), transection of the suprascapular nerve (neurectomy [N] group; n = 6), or tendon release plus nerve transection (tenotomy + neurectomy [T&N] group; n = 6)...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28272430/identification-and-characterization-of-differentially-expressed-mirnas-in-subcutaneous-adipose-between-wagyu-and-holstein-cattle
#5
Yuntao Guo, Xiuxiu Zhang, Wanlong Huang, Xiangyang Miao
MicroRNAs (miRNAs) are important post-transcriptional regulators involved in animal adipogenesis, however, their roles in bovine fat deposition remain poorly understood. In the present study, we conducted a comparative RNA sequencing to identify the key miRNAs involved in beef lipid accumulation by comparing the backfat small RNA samples between Wagyu (high intramuscular fat) and Holstein (moderate intramuscular fat) cattle. Fifteen miRNAs such as bta-miR-142-3p, bta-miR-379, bta-miR-196a, bta-miR-196b, bta-miR-30f and bta-miR-2887 were identified to have a higher expression level in Wagyu cattle compared with Holstein, whereas bta-miR-320a, bta-miR-874 and bta-miR-1247-3p had a lower expression level in Wagyu...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28255944/fatty-rind-of-intramuscular-soft-tissue-tumors-of-the-extremity-is-it-different-from-the-split-fat-sign
#6
Jinkyeong Sung, Jee-Young Kim
OBJECTIVE: To analyze intramuscular soft-tissue tumors with fatty rind, and to evaluate the difference between fatty rind and split fat sign on magnetic resonance imaging (MRI). MATERIALS AND METHODS: We retrospectively analyzed 50 pathologically confirmed intramuscular masses on MRI. We evaluated the distribution and shape of fatty rind and muscle atrophy. RESULTS: Fatty rind was found more frequently in benign lesions (80% [36 out of 45]) compared with malignant lesions (25% [1 out of 5]; P = 0...
March 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28255176/bta-mir-23a-involves-in-adipogenesis-of-progenitor-cells-derived-from-fetal-bovine-skeletal-muscle
#7
Long Guan, Xin Hu, Li Liu, Yishen Xing, Zhengkui Zhou, Xingwei Liang, Qiyuan Yang, Shengyun Jin, Jinshan Bao, Huijiang Gao, Min Du, Junya Li, Lupei Zhang
Intramuscular fat deposition or marbling is essential for high quality beef. The molecular mechanism of adipogenesis in skeletal muscle remains largely unknown. In this study, we isolated Platelet-derived growth factor receptor α (PDGFRα) positive progenitor cells from fetal bovine skeletal muscle and induced into adipocytes. Using miRNAome sequencing, we revealed that bta-miR-23a was an adipogenic miRNA mediating bovine adipogenesis in skeletal muscle. The expression of bta-miR-23a was down-regulated during differentiation of PDGFRα(+) progenitor cells...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28255089/anthropometric-prediction-of-skeletal-muscle-cross-sectional-area-in-persons-with-spinal-cord-injury
#8
Rodney C Wade, Ashraf S Gorgey
Finding an accurate and affordable method to quantify muscle size following spinal cord injury (SCI) could provide benefits clinically and in research settings. The purpose of this study was to validate the use of anthropometric measurements versus magnetic resonance imaging (MRI) to evaluate muscle cross-sectional area (CSA) and develop a field equation to predict muscle CSA specific to the SCI population. Twenty-two men with chronic (>1yr) motor complete SCI participated in the current study. Anthropometric measurements, including mid-thigh circumference and anterior skinfold thickness (SFT), were taken on the right thigh...
March 2, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28252054/enhancement-of-porcine-intramuscular-fat-content-by-overexpression-of-the-cytosolic-form-of-phosphoenolpyruvate-carboxykinase-in-skeletal-muscle
#9
Zijian Ren, Ying Wang, Yuanyuan Ren, Zhengwei Zhang, Weiwang Gu, Zhaoting Wu, Lingyi Chen, Lisha Mou, Rongfeng Li, Haiyuan Yang, Yifan Dai
Intramuscular fat (IMF) content has been generally recognized as a desirable trait in pork meat because of its positive effect on eating quality. An effective approach to enhance IMF content in pork is the generation of transgenic pigs. In this study, we used somatic cell nuclear transfer (SCNT) to generate cloned pigs exhibiting ectopic expression of phosphoenolpyruvate carboxykinase (PEPCK-C) driven by an α-skeletal-actin gene promoter, which was specifically expressed in skeletal muscle. Using qRT-PCR and Western blot analysis, we demonstrated that PEPCK-C was functionally expressed and had a significant effect on total fatty acid content in the skeletal muscle of the transgenic pigs, while the n-6/n-3 polyunsaturated fatty acid (PUFA) ratio showed no difference between transgenic and control pigs...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28242508/sensory-characteristics-of-meat-and-meat-products-from-entire-male-pigs
#10
M Dolores Garrido, Macarena Egea, M Belén Linares, Francesc Borrisser-Pairó, Begoña Rubio, Ceferina Viera, Beatriz Martínez
The surgical castration of male piglets has traditionally been practised to prevent the development of boar taint in pork meat, but European rules aim to end this practice on a voluntary basis. This study represents a sensory characterization of the meat and meat products from entire male pigs. Three levels of androstenone concentration in fat were compared: low, 0-0.3mgkg(-1); medium, 0.4-0.9μgkg(-1) and high, 1-2.75μgkg(-1). The use of meat from entire males in meat products lowered the perception of boar taint compared with fresh meat but was insufficient to totally mask it...
February 14, 2017: Meat Science
https://www.readbyqxmd.com/read/28242305/intramuscular-injection-of-exogenous-leptin-induces-adiposity-glucose-intolerance-and-fatty-liver-by-repressing-the-jak2-stat3-pi3k-pathway-in-a-rat-model
#11
Lihong Wu, Guoxiong Chen, Wen Liu, Xuechao Yang, Jie Gao, Liwen Huang, Hongbing Guan, Zhengmao Li, Zhichao Zheng, Meiling Li, Weiwang Gu, Linhu Ge
Obesity, diabetes and fatty liver disease are extremely common in leptin-resistant patients. Dysfunction of leptin or its receptor is associated with obesity. The present study aimed to assess the effects of intramuscular injection of exogenous leptin or its receptor on fat deposition and leptin-insulin feedback regulation. Forty-five 40-day old female Sprague Dawley (SD) rats were injected thrice with leptin or its receptor intramuscularly. Adiposity and fat deposition were assessed by assessing the Lee's index, body weight, food intake, and total cholesterol, high density lipoprotein, low density lipoprotein, and triglyceride levels, as well as histological properties (liver and adipose tissue)...
February 24, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28237602/effects-of-intramuscular-injections-of-folic-acid-vitamin-b12-or-both-on-lactational-performance-and-energy-status-of-multiparous-dairy-cows
#12
M Duplessis, H Lapierre, D Pellerin, J-P Laforest, C L Girard
The purpose of this experiment was to gain understanding on changes in energy partitioning when folic acid and vitamin B12 supplements, alone or combined, were given by weekly intramuscular injections from 3 wk before the expected calving date until 7 wk postpartum. Twenty-four multiparous cows were assigned to 6 blocks of 4 cows each according to previous 305-d lactation yield to either 0 or 320 mg of folic acid and 0 or 10 mg of vitamin B12 in a 2 × 2 factorial arrangement. Plasma concentration of folates was increased by folic acid supplement, and this increase was greater with the combined supplement...
February 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28195222/rna-seq-based-detection-of-differentially-expressed-genes-in-the-skeletal-muscle-of-duroc-pigs-with-distinct-lipid-profiles
#13
T F Cardoso, A Cánovas, O Canela-Xandri, R González-Prendes, M Amills, R Quintanilla
We have used a RNA-seq approach to investigate differential expression in the skeletal muscle of swine (N = 52) with divergent lipid profiles i.e. HIGH (increased intramuscular fat and muscle saturated and monounsaturated fatty acid contents, higher serum lipid concentrations and fatness) and LOW pigs (leaner and with an increased muscle polyunsaturated fatty acid content). The number of mRNAs and non-coding RNAs (ncRNAs) expressed in the porcine gluteus medius muscle were 18,104 and 1,558, respectively...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28193782/mitochondrial-mass-and-activity-as-a-function-of-body-composition-in-individuals-with-spinal-cord-injury
#14
Laura C O'Brien, Rodney C Wade, Liron Segal, Qun Chen, Jeannie Savas, Edward J Lesnefsky, Ashraf S Gorgey
Spinal cord injury (SCI) is accompanied by deterioration in body composition and severe muscle atrophy. These changes put individuals at risk for insulin resistance, type II diabetes, and cardiovascular disease. To determine the relationships between skeletal muscle mitochondrial mass, activity, and body composition, 22 men with motor complete SCI were studied. Body composition assessment was performed using dual-energy X-ray absorptiometry and magnetic resonance imaging. Skeletal muscle biopsies were obtained from the vastus lateralis muscle to measure citrate synthase (CS) and complex III (CIII) activity...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28191379/functional-and-aesthetic-recovery-of-congenital-muscular-torticollis-with-intramuscular-stromal-vascular-fraction-enriched-fat-grafting
#15
Juan Monreal
Congenital muscular torticollis is a well-known pathological condition caused by the contracture and shortening of the sternocleidomastoid muscle. This condition is manifested by a neck postural deformity often accompanied by some kind of facial asymmetry. Once diagnosed, treatment by early physiotherapy is generally successful in a high percentage of patients if performed during the first year of life. Later, especially after the fourth year, conservative treatment is usually far less effective, and surgical techniques remain the only way to improve neck contour and function...
January 12, 2017: Curēus
https://www.readbyqxmd.com/read/28183305/controlling-of-growth-performance-lipid-deposits-and-fatty-acid-composition-of-chicken-meat-through-a-probiotic-lactobacillus-johnsonii-during-subclinical-clostridium-perfringens-infection
#16
Hesong Wang, Xueqin Ni, Lei Liu, Dong Zeng, Jing Lai, Xiaodan Qing, Guangyao Li, Kangcheng Pan, Bo Jing
BACKGROUND: Meat is considered as a major source of polyunsaturated fatty acid (PUFA) which is essential for humans, therefore its lipid level and fatty acid composition have drawn great attention. As no clinical sign can be found in chicks subclinically infected by Clostridium perfringens (CP), the meat may be purchased and eaten. The objective of the present study was to determine whether Lactobacillus johnsonii (LJ) can control the CP-caused impact on growth, lipid levels, fatty acid composition and other flavor or nutritional quality in the meat...
February 10, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28183280/whole-genome-scan-reveals-the-genetic-signature-of-african-ankole-cattle-breed-and-potential-for-higher-quality-beef
#17
Mengistie Taye, Jaemin Kim, Sook Hee Yoon, Wonseok Lee, Olivier Hanotte, Tadelle Dessie, Stephen Kemp, Okeyo Ally Mwai, Kelsey Caetano-Anolles, Seoae Cho, Sung Jong Oh, Hak-Kyo Lee, Heebal Kim
BACKGROUND: Africa is home to numerous cattle breeds whose diversity has been shaped by subtle combinations of human and natural selection. African Sanga cattle are an intermediate type of cattle resulting from interbreeding between Bos taurus and Bos indicus subspecies. Recently, research has asserted the potential of Sanga breeds for commercial beef production with better meat quality as compared to Bos indicus breeds. Here, we identified meat quality related gene regions that are positively selected in Ankole (Sanga) cattle breeds as compared to indicus (Boran, Ogaden, and Kenana) breeds using cross-population (XP-EHH and XP-CLR) statistical methods...
February 9, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28183279/three-dimensional-comparison-of-intramuscular-fat-content-between-young-and-old-adults
#18
Akito Yoshiko, Maya Hioki, Nana Kanehira, Kiyoshi Shimaoka, Teruhiko Koike, Hisataka Sakakibara, Yoshiharu Oshida, Hiroshi Akima
BACKGROUND: Fat infiltration within skeletal muscle is known as intramuscular fat (IMF), which increases with aging. Studies have assessed IMF content, using the mid-thigh as a representative location. However, three-dimensional IMF distribution is not well understood. The aim of this study was to compare the IMF content in young and old adults by assessing its distribution along the length of the thigh. METHODS: Consecutive transaxial images of the right thighs in 15 young (age, 21...
February 10, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28166119/muscle-protein-turnover-and-the-molecular-regulation-of-muscle-mass-during-hypoxia
#19
Stefan M Pasiakos, Claire E Berryman, Christopher T Carrigan, Andrew J Young, John W Carbone
Effects of environmental hypoxia on fat-free mass are well studied. Negative energy balance, increased nitrogen excretion and fat-free mass loss are commonly observed in lowlanders sojourning at high altitude. Reductions in fat-free mass can be minimized if energy consumption matches energy expenditure. However, in non-research settings, achieving energy balance during high altitude sojourns is unlikely and myofibrillar protein mass is usually lost, but the mechanisms accounting for the loss of muscle mass are not clear...
February 4, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28158957/trunk-muscle-characteristics-of-the-multifidi-erector-spinae-psoas-and-quadratus-lumborum-in-older-adults-with-and-without-chronic-low-back-pain
#20
J Megan Sions, James M Elliott, Ryan T Pohlig, Gregory E Hicks
Study Design Cross-sectional study. Objective To determine whether there are differences in trunk muscle characteristics between older adults with and without chronic low back pain (LBP), while controlling for age, sex, and body mass index. Background Muscle support for the trunk is provided by the multifidi, erector spinae, psoas, and quadratus lumborum. Trunk muscle characteristics may be altered with aging and/or chronic LBP. To date, most trunk muscle research has been conducted among younger adults. Given age-related muscle changes, such as reduced size and increased intramuscular fat, studies are needed in older adults, including those comparing older adults with and without LBP...
March 2017: Journal of Orthopaedic and Sports Physical Therapy
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