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https://www.readbyqxmd.com/read/28642191/new-aspects-in-free-flap-surgery-mini-perforator-flaps-and-extracorporeal-flap-perfusion
#1
Klaus-Dietrich Wolff
BACKGROUND: The scope of microvascular tissue transfer in the Head and Neck reaches from coverage of simple soft tissue defects to complex 3-D reconstructions using multiple or chimeric flaps. This paper summarises the presentation given at the Congress of the French Society of Oral and Maxillofacial Surgery in Marseille 2017. It was the aim of our work to add further elements to this wide spectrum of reconstructive possibilities. METHODS: For patients with small intraoral soft tissue defects in whom the use of a radial forearm flap would not be justified because of its donor site morbidity, but who nevertheless would take a benefit from a small free flap, we used mini-perforator flaps from the lower leg...
June 19, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28638152/combination-of-a-high-fat-diet-with-sweetened-condensed-milk-exacerbates-inflammation-and-insulin-resistance-induced-by-each-separately-in-mice
#2
Laureane Nunes Masi, Amanda Roque Martins, Amanda Rabello Crisma, Cátia Lira do Amaral, Mariana Rodrigues Davanso, Tamires Duarte Afonso Serdan, Roberta Dourado Cavalcante da Cunha de Sá, Maysa Mariana Cruz, Maria Isabel Cardoso Alonso-Vale, Rosângela Pavan Torres, Jorge Mancini-Filho, Joice Naiara Bertaglia Pereira, Marta Maria da Silva Righetti, Edson Aparecido Liberti, Sandro Massao Hirabara, Rui Curi
Obesogenic diets increase body weight and cause insulin resistance (IR), however, the association of these changes with the main macronutrient in the diet remains to be elucidated. Male C57BL/6 mice were fed with: control (CD), CD and sweetened condensed milk (HS), high-fat (HF), and HF and condensed milk (HSHF). After 2 months, increased body weight, glucose intolerance, adipocyte size and cholesterol levels were observed. As compared with CD, HS ingested the same amount of calories whereas HF and HSHF ingested less...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28626321/the-effects-of-changes-in-support-and-inclined-boards-on-lower-extremity-muscle-activity
#3
Sangyong Lee, Yoon-Hee Choi, Janggon Kim
[Purpose] The purpose of this study was to identify the effects of changes in support and inclined boards on lower-extremity muscle activity. [Subjects and Methods] The study subjects were 15 healthy adult males. Aero-Step equipment was used as an unstable support, and an inclined board was used to maintain angles of 0° and 20°. Electromyography was employed to analyze lower-extremity muscle activity. [Results] The vastus lateralis, vastus medialis, rectus femoris, gastrocnemius, soleus, and tibialis anterior muscles showed significant differences according to changes in the support and inclined board...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28626313/comparison-of-the-tibialis-anterior-and-soleus-muscles-isolation-ratios-during-the-sit-to-stand-movement-in-elderly-people
#4
Sang-Hoon Lee, Won-Gyu Yoo
[Purpose] To compared activation of the tibialis anterior and soleus muscles during the sit-to-stand movement in elderly people. [Subjects and Methods] Ten elderly women were enrolled. The activities of the dominant lower extremity muscles were measured using a wireless electromyography system. Subjects performed natural sit-to-stand tasks. [Results] In the pre-thigh off phase, the tibialis anterior isolation ratio was significantly higher than the soleus isolation ratio. In the post-thigh off phase, the tibialis and soleus isolation ratios did not significantly differ...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28623614/abobotulinumtoxina-a-review-in-pediatric-lower-limb-spasticity
#5
Yahiya Y Syed
AbobotulinumtoxinA (Dysport(®)) is currently the only botulinum toxin A formulation approved by the US FDA for the treatment of lower limb spasticity in pediatric patients aged ≥2 years. Intramuscular abobotulinumtoxinA was approved based on the results of a pivotal phase 3 trial in children with lower limb spasticity due to cerebral palsy. In this trial, a single treatment cycle with abobotulinumtoxinA 10-15 U/kg/leg injected into the gastrocnemius and soleus muscles significantly improved ankle plantar flexor muscle tone (primary endpoint), with abobotulinumtoxinA recipients showing a significant response to treatment relative to placebo...
June 16, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28621016/acute-effects-of-phenylbutyrate-on-glutamine-branched-chain-amino-acid-and-protein-metabolism-in-skeletal-muscles-of-rats
#6
Milan Holecek, Melita Vodenicarovova, Pavel Siman
Phenylbutyrate (PB) acts as chemical chaperone and histone deacetylase inhibitor, which is used to decrease ammonia in urea cycle disorders and has been investigated for use in the treatment of a number of lethal illnesses. We performed in vivo and in vitro experiments to examine the effects of PB on glutamine (GLN), branched-chain amino acid (BCAA; valine, leucine and isoleucine) and protein metabolism in rats. In the first study, animals were sacrificed one hour after three injections of PB (300mg/kg b...
June 16, 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/28615698/divergent-anabolic-signalling-responses-of-murine-soleus-and-tibialis-anterior-muscles-to-chronic-2g-hypergravity
#7
Timur Mirzoev, Sergey Tyganov, Irina Petrova, Vasily Gnyubkin, Norbert Laroche, Laurence Vico, Boris Shenkman
The purpose of the study was to assess the rate of protein synthesis (PS) and elucidate signalling pathways regulating PS in mouse soleus (Sol) and tibialis anterior (TA) muscles following chronic hypergravity (30-day centrifugation at 2G). The content of the key signalling proteins of the various anabolic signalling pathways was determined by Western-blotting. The rate of PS was assessed using in-vivo SUnSET technique. An exposure to 2G centrifugation did not induce any significant changes in the rate of PS as well as phosphorylation status of the key anabolic markers (AKT, p70s6k, 4E-BP1, GSK-3beta, eEF2) in Sol...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28614768/melanocortin-4-receptor-agonist-ro27-3225-ameliorates-soleus-but-not-gastrocnemius-atrophy-in-arthritic-rats
#8
A B Gomez-Sanmiguel, M P Nieto-Bona, C Fernandez-Galaz, T Priego, A I Martin, A Lopez-Calderon
Adjuvant-induced arthritis in rats decreases body weight and muscle mass. Melanocyte stimulating hormone administration to arthritic rats decreases inflammation and skeletal muscle wasting. In this study, we investigate whether activation of melanocortin-4 receptor by RO27-3225 administration is able to prevent the effect of arthritis on the expression of muscle-specific E3 ubiquitin ligases and MyoD in two different muscles, gastrocnemius (a mainly fast type muscle) and soleus (slow type). Arthritis was induced in male Wistar rats by intradermal injection of Freund's adjuvant...
April 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28610582/behavioral-and-neural-adaptations-in-response-to-five-weeks-of-balance-training-in-older-adults-a-randomized-controlled-trial
#9
Jan Ruffieux, Audrey Mouthon, Martin Keller, Michael Wälchli, Wolfgang Taube
BACKGROUND: While the positive effect of balance training on age-related impairments in postural stability is well-documented, the neural correlates of such training adaptations in older adults remain poorly understood. This study therefore aimed to shed more light on neural adaptations in response to balance training in older adults. METHODS: Postural stability as well as spinal reflex and cortical excitability was measured in older adults (65-80 years) before and after 5 weeks of balance training (n = 15) or habitual activity (n = 13)...
June 13, 2017: Journal of Negative Results in Biomedicine
https://www.readbyqxmd.com/read/28607433/lipidomic-analysis-of-skeletal-muscle-tissues-of-p53-knockout-mice-by-nuplc-esi-ms-ms
#10
Se Mi Park, Seul Kee Byeon, Hojun Lee, Hyerim Sung, Il Yong Kim, Je Kyung Seong, Myeong Hee Moon
Tumour suppressor p53 is known to be associated with the maintenance of mitochondrial functional properties in the skeletal muscles. As deactivation or mutation of p53 can affect the synthesis of lipids, investigating the relationship between p53-related energy generation metabolism and perturbation of lipid profile is critical. In this study, 329 lipid species (among 412 identified species) in two different skeletal muscle tissues (the gastrocnemius and soleus) from p53 knockout (KO) mice were quantitatively analysed using nanoflow ultrahigh performance liquid chromatography tandem mass spectrometry (nUPLC-MS/MS)...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28605113/muscle-carnitine-availability-plays-a-central-role-in-regulating-fuel-metabolism-in-the-rodent
#11
Craig Porter, Dumitru Constantin-Teodosiu, Despina Constantin, Brendan Leighton, Simon M Poucher, Paul L Greenhaff
The body carnitine pool is primarily confined to skeletal muscle, where it regulates carbohydrate (CHO) and fat usage. Mildronate (3-(2,2,2-trimethylhydrazinium)-propionate) inhibits carnitine synthesis and tissue uptake, but the impact of carnitine depletion on whole-body fuel selection, muscle fuel metabolism and its molecular regulation is under-investigated. Male lean Zucker rats received water (control, n = 8) or mildronate-supplemented water (mildronate, n = 8) for 10 days (1.6 g kg(-1) body mass (bm)(...
June 12, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28598858/effects-of-intermittent-theta-burst-stimulation-on-spasticity-after-spinal-cord-injury
#12
Raffaele Nardone, Patrick B Langthaler, Andrea Orioli, Peter Höller, Yvonne Höller, Vanessa N Frey, Francesco Brigo, Eugen Trinka
PURPOSE: Spasticity is a common disorder in patients with spinal cord injury (SCI). The aim of this study was to investigate whether intermittent theta burst stimulation (iTBS), a safe, non-invasive and well-tolerated protocol of excitatory repetitive transcranial magnetic stimulation (rTMS), is effective in modulating spasticity in SCI patients. METHODS: In this randomized, double-blind, crossover, sham-controlled study, ten subjects with incomplete cervical or thoracic SCI received 10 days of daily sessions of real or sham iTBS...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28596267/adaptations-of-motoneuron-properties-after-weight-lifting-training-in-rats
#13
Piotr Krutki, Włodzimierz Mrówczyński, Marcin Bączyk, Dawid Łochyński, Jan Celichowski
Resistance training, with repeated short-term and high-intensity exercises, is responsible for an increase in muscle mass and force. The aim of this study was to determine whether such training induces adaptations in the electrophysiological properties of motoneurons innervating the trained muscles and to relate these adaptive changes to previous observations made on motor unit contractile properties. The study was performed on adult male Wistar rats. Animals from the training group were subjected to a five-week voluntary progressive weight-lifting program, while control rats were restricted to standard cage activity...
June 8, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28592916/a-reduction-in-selenoprotein-s-amplifies-the-inflammatory-profile-of-fast-twitch-skeletal-muscle-in-the-mdx-dystrophic-mouse
#14
Craig Robert Wright, Giselle Larissa Allsopp, Alex Bernard Addinsall, Natasha Lee McRae, Sofianos Andrikopoulos, Nicole Stupka
Excessive inflammation is a hallmark of muscle myopathies, including Duchenne muscular dystrophy (DMD). There is interest in characterising novel genes that regulate inflammation due to their potential to modify disease progression. Gene polymorphisms in Selenoprotein S (Seps1) are associated with elevated proinflammatory cytokines, and in vitro SEPS1 is protective against inflammatory stress. Given that SEPS1 is highly expressed in skeletal muscle, we investigated whether the genetic reduction of Seps1 exacerbated inflammation in the mdx mouse...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28592414/effects-of-sarcolipin-deletion-on-skeletal-muscle-adaptive-responses-to-functional-overload-and-unload
#15
Val A Fajardo, Bradley A Rietze, Paige J Chambers, Catherine Bellissimo, Eric Bombardier, Joe Quadrilatero, A Russell Tupling
Overexpression of sarcolipin (SLN), a regulator of sarco(endo)plasmic reticulum Ca(2+)-ATPases (SERCAs), stimulates calcineurin signaling to enhance skeletal muscle oxidative capacity. Some studies have shown that calcineurin may also control skeletal muscle mass and remodeling in response to functional overload and unload stimuli by increasing myofiber size and the proportion of slow fibers. To examine whether SLN might mediate these adaptive responses we performed soleus and gastrocnemius tenotomy in wild-type (WT) and Sln¬-null (Sln(-/-)) mice and examined the overloaded plantaris and unloaded/tenotomized soleus muscles...
June 7, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28590761/proteome-wide-adaptations-of-mouse-skeletal-muscles-during-a-full-month-in-space
#16
Georg Tascher, Thomas Brioche, Pauline Maes, Angèle Chopard, Donal O'Gorman, Guillemette Gauquelin-Koch, Stephane Blanc, Fabrice Bertile
The safety of space flight is challenged by a severe loss of skeletal muscle mass, strength and endurance that may compromise the health and performance of astronauts. The molecular mechanisms underpinning muscle atrophy and decreased performance have been studied mostly after short duration flights, and are still not fully elucidated. By deciphering the muscle proteome changes elicited in mice after a full month aboard the BION-M1 biosatellite, we observed that the antigravity soleus incurred the greatest changes compared to locomotor muscles...
June 7, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28589244/does-spinal-excitability-scale-to-the-difficulty-of-the-dual-task
#17
Devon M Day, Mario T Boivin, Allan L Adkin, Craig D Tokuno
PURPOSE: This study examined whether spinal excitability, as measured by the soleus Hoffmann reflex (H-reflex), is scaled to the difficulty level of the dual-task being performed. METHODS: Twenty-two participants completed a combination of three balance task and three secondary cognitive (visuo-motor) task difficulty levels for a total of nine dual-task conditions. An additional eight participants were tested while performing the same three balance task difficulty levels on its own (i...
June 6, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28587894/burrowing-as-a-novel-voluntary-strength-training-method-for-mice-a-comparison-of-various-voluntary-strength-or-resistance-exercise-methods
#18
P Roemers, P N Mazzola, P P De Deyn, W J Bossers, M J G van Heuvelen, E A van der Zee
BACKGROUND: Voluntary strength training methods for rodents are necessary to investigate the effects of strength training on cognition and the brain. However, few voluntary methods are available. NEW METHOD: The current study tested functional and muscular effects of two novel voluntary strength training methods, burrowing (digging a substrate out of a tube) and unloaded tower climbing, in male C57Bl6 mice. To compare these two novel methods with existing exercise methods, resistance running and (non-resistance) running were included...
June 3, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28583990/docetaxel-does-not-impair-skeletal-muscle-force-production-in-a-murine-model-of-cancer-chemotherapy
#19
Thomas Chaillou, Ashley McPeek, Johanna T Lanner
Chemotherapy drugs such as docetaxel are commonly used to treat cancer. Cancer patients treated with chemotherapy experience decreased physical fitness, muscle weakness and fatigue. To date, it is unclear whether these symptoms result only from cancer-derived factors or from the combination of cancer disease and cancer treatments, such as chemotherapy. In this study, we aimed at determining the impact of chemotherapy per se on force production of hind limb muscles from healthy mice treated with docetaxel. We hypothesized that docetaxel will decrease maximal force, exacerbate the force decline during repeated contractions and impair recovery after fatiguing stimulations...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28579954/linear-parameter-varying-identification-of-dynamic-joint-stiffness-during-time-varying-voluntary-contractions
#20
Mahsa A Golkar, Ehsan Sobhani Tehrani, Robert E Kearney
Dynamic joint stiffness is a dynamic, nonlinear relationship between the position of a joint and the torque acting about it, which can be used to describe the biomechanics of the joint and associated limb(s). This paper models and quantifies changes in ankle dynamic stiffness and its individual elements, intrinsic and reflex stiffness, in healthy human subjects during isometric, time-varying (TV) contractions of the ankle plantarflexor muscles. A subspace, linear parameter varying, parallel-cascade (LPV-PC) algorithm was used to identify the model from measured input position perturbations and output torque data using voluntary torque as the LPV scheduling variable (SV)...
2017: Frontiers in Computational Neuroscience
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