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https://www.readbyqxmd.com/read/28342371/contrast-enhancement-with-uranyl-acetate-allows-quantitative-analysis-of-the-articular-cartilage-by-microct-application-to-mandibular-condyles-in-the-btx-rat-model-of-disuse
#1
Jean-Daniel Kün-Darbois, Florence Manero, Louis Rony, Daniel Chappard
Microcomputed tomography (microCT) is well adapted to quantitative analysis of calcified tissues but soft tissues (such as cartilage) are radiolucent and need a contrast enhancement procedure for microCT. We developed a "staining" method allowing microCT imaging of articular cartilage using uranyl acetate (UA). The method was used to see whether adult rats with a botulinum toxin (BTX) injection in masticatory muscles present a change at the condylar cartilage of the mandible in association with a localized trabecular bone loss...
March 21, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28326708/-evaluation-of-electromyogram-activity-and-masticatory-efficiency-in-edentulous-individuals-whose-maxillomandibular-horizontal-relationship-records-were-obtained-with-three-different-methods
#2
Liu Cuiling, Yang Liyuan, Zheng Zheng, Gao Xu
OBJECTIVE: This study was performed to investigate the electromyographic (EMG) activity of the masseter muscle and the anterior temporalis muscle, as well as the masticatory efficiency after insertion of the dentures in edentulous individuals whose maxillomandibular horizontal relationship records were obtained with three different methods. METHODS: Ten edentulous individuals were enrolled in this study. Three types of complete dentures for these 10 edentulous patients were made according to their different maxillomandibular horizontal relationship records...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28314397/effectiveness-of-botulinum-toxin-type-a-for-the-treatment-of-chronic-masticatory-myofascial-pain-a-case-series
#3
Jason S Baker, Patrick J Nolan
BACKGROUND: The aim of this study is to evaluate the effectiveness of botulinum toxin type A (BTX-A) for the treatment of chronic masticatory myofascial pain (MMP) over 12 months and to test a standardized protocol. METHODS: This is a prospective case series of consecutive adult patients with chronic MMP treated with injection of BTX-A into the bilateral temporalis and masseter muscles. The authors used the same anatomic landmarks and dosage and followed each patient for 12 months...
January 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28304255/neurocysticercosis-in-a-rhesus-macaque-macaca-mulatta
#4
Jessica M Johnston, Cecilia D Dyer, Susan Madison-Antenucci, Kimberly Am Mergen, Christin L Veeder, Angela K Brice
An 8-y-old, intact, male rhesus macaque (Macaca mulatta) was sedated to undergo MRI in preparation for the implantation of cranial hardware. During imaging, 9 focal lesions were noted in the brain and musculature of the head. The lesions were hyperechoic with hypoechoic rims. The animal was deemed inappropriate for neuroscience research, and euthanasia was elected. Gross examination revealed multiple round, thick-walled, fluid-filled cysts (diameter, approximately 0.5 cm) in multiple tissues: one each in the left caudal lung lobe, left masseter muscle, and the dura overlying the brain and 8 throughout the gray and white matter of the brain parenchyma...
December 1, 2016: Comparative Medicine
https://www.readbyqxmd.com/read/28301687/effect-of-high-frequency-bio-oxidative-ozone-therapy-for-masticatory-muscle-pain-a-double-blind-randomized-clinical-trial
#5
Tamer Celakil, Almina Muric, Bilge Gokcen Roehlig, Gulumser Evlioglu, Haluk Keskin
OBJECTIVES: To evaluate the effect of bio-oxidative ozone application at the points of greatest pain in patients with chronic masticatory muscle pain. METHODS: A total number of 40 (40 women, with a mean age of 31.7) were selected after the diagnosis of myofacial pain dysfunction syndrome according to the Research Diagnostic Criteria for Temporomandibular Disorder (RDC/TMD). The patients were randomly divided into two groups; patients received the ozone therapy at the point of greatest pain, ozone group (n = 20); patients received the sham ozone therapy at the point of greatest pain, placebo group (n = 20)...
March 16, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28299422/homeostatic-regulation-through-gaba-and-acetylcholine-muscarinic-receptors-of-motor-trigeminal-neurons-following-sleep-deprivation
#6
Hanieh Toossi, Esther Del Cid-Pellitero, Barbara E Jones
Muscle tone is regulated across sleep-wake states, being maximal in waking, reduced in slow wave sleep (SWS) and absent in paradoxical or REM sleep (PS or REMS). Such changes in tone have been recorded in the masseter muscles and shown to correspond to changes in activity and polarization of the trigeminal motor 5 (Mo5) neurons. The muscle hypotonia and atonia during sleep depend in part on GABA acting upon both GABAA and GABAB receptors (Rs) and acetylcholine (ACh) acting upon muscarinic 2 (AChM2) Rs. Here, we examined whether Mo5 neurons undergo homeostatic regulation through changes in these inhibitory receptors following prolonged activity with enforced waking...
March 15, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28295511/gross-measurements-of-the-digestive-tract-and-visceral-organs-of-addax-antelope-addax-nasomaculatus-following-a-concentrate-or-forage-feeding-regime
#7
S A Tahas, O Martin Jurado, S Hammer, A Arif, S Reese, J-M Hatt, M Clauss
Differences in macroscopic measurements of the gastrointestinal tract have been hypothesized to correlate with the browser-grazer continuum in the natural diet of ruminants. However, to what extent these characteristics represent species-specific traits, or respond to the actually ingested diet, remains to be investigated. Twelve surplus addax antelope (Addax nasomaculatus) were divided into two groups and fed, for 3 months, either their usual diet, consisting of a concentrate feed with a limited amount of hay, or a diet of unlimited hay only...
March 12, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28290310/a-secondary-mandibular-condylar-articulation-and-collateral-effects-on-a-late-neolithic-mandible-from-bois-madame-rockshelter-in-arbre-belgium
#8
Frank L'Engle Williams, Caroline Polet
A Neolithic Belgian mandible from Bois Madame rockshelter in Arbre presents an asymmetrical morphology resulting from a secondary, or false, articulation of the right mandibular condyle. The pathological articulation produced enlarged masseter, medial pterygoid and mylohyoid musculature on the right side as well as a flattening of the right incisal alveolus curvature. The secondary condylar articulation did not lead to pronounced asymmetry of attrition on the antimeres of the dental arcade. This is the most complete mandible from this Late Neolithic collective burial dating to the beginning of the Bronze Age circa 4000 years BP...
March 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28288770/experimental-toxoplasma-gondii-infections-in-pigs-humoral-immune-response-estimation-of-specific-igg-avidity-and-the-challenges-of-reproducing-vertical-transmission-in-sows
#9
Walter Basso, Felix Grimm, Maja Ruetten, Vitomir Djokic, Radu Blaga, Xaver Sidler, Peter Deplazes
Ten pregnant sows were experimentally inoculated per os with T. gondii in order to investigate vertical and galactogenic transmission of the parasite and the evolution and maturation of the specific IgG humoral response in the sows and piglets. Five seronegative sows received 10(4)T. gondii (CZ isolate clone H3) sporulated oocysts during late-pregnancy (Exp. 1), three sows received 10(4) oocysts during mid-pregnancy (Exp. 2) and three sows from Exp. 1 (and two seronegative sows) were re-inoculated with 10(5) oocysts during a further pregnancy (late-pregnancy) (Exp...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28280710/the-postoperative-trismus-nerve-injury-and-secondary-angle-formation-after-partial-masseter-muscle-resection-combined-with-mandibular-angle-reduction-a-case-report
#10
Jeong-Hwan Kim, Seong-Un Lim, Ki-Su Jin, Ho Lee, Yoon-Sic Han
A patient, who underwent partial masseter muscle resection and mandibular angle reduction at a plastic surgery clinic, visited this hospital with major complaints of trismus and dysesthesia. A secondary angle formation due to a wrong surgical method was observed via clinical and radiological examinations, and the patient complained of trismus due to the postoperative scars and muscular atrophy caused by the masseter muscle resection. The need for a masseter muscle resection in square jaw patients must be approached with caution...
February 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28273612/standardised-surface-electromyography-allows-effective-submental-muscles-assessment
#11
Federica Musto, Riccardo Rosati, Chiarella Sforza, Marilisa Toma, Claudia Dellavia
The aims of this pilot study were to evaluate: (i) the reproducibility and variability of an electromyographical protocol developed for the assessment of submental muscles (SM) (ii) to apply the new protocol to maximal teeth clenching, a simple and largely studied static task in order to quantify the relative contribution of submental muscles. In 20 healthy subjects, aged 19-35years, surface electromyography of SM, masseter (MM) and anterior temporalis (TA) muscles was performed during maximal voluntary clenching (MVC) with and without cotton rolls and the pushing of the tongue against the palate...
February 24, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28270708/a-rare-case-of-inflammatory-myofibroblastic-tumor-of-the-mandible-mimicking-a-malignant-tumor
#12
Mohammed Ghazi AlKindi
Inflammatory myofibroblastic tumor (IMT) of the head and neck is a rare benign proliferative lesion of unknown etiology that mimics malignant lesions clinically and radiographically. I report the case of a 27-year-old woman who presented with a mass in her left mandible associated with restricted mouth opening that had developed over the preceding 7 months. The mass was resected completely with 5 mm margin under general anesthesia. The mass was extending to the floor of the mouth and impinging on the masseter and temporalis muscles...
January 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/28268652/a-survey-on-the-feasibility-of-surface-emg-in-facial-pacing
#13
Ville Rantanen, Mirja Ilves, Antti Vehkaoja, Anton Kontunen, Jani Lylykangas, Eeva Makela, Markus Rautiainen, Veikko Surakka, Jukka Lekkala
A survey on the feasibility of surface electromyography (EMG) measurements in facial pacing is presented. Pacing for unilateral facial paralysis consists of the measurement of activity from the healthy side of the face and functional electrical stimulation to reanimate the paralyzed one. The goal of this study is to evaluate the feasibility of surface EMG as a measurement method to detect muscle activations and to determine their intensities. Prior work is discussed, and results from experiments where 12 participants carried out a set of facial movements are presented...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267828/satoyoshi-syndrome-with-progressive-orofacial-manifestations-a-case-history-report
#14
Jian Li, Dong Peng, Ting Jiang, Limor Avivi-Arber
A young female patient suffering from Satoyoshi syndrome had the first characteristic signs and symptoms of hair loss and progressive spontaneous intermittent painful spasms of limb muscles at age 6.5 years. Thereafter, she developed chronic diarrhea, amenorrhea, and skeletal deformities. In the orofacial region, she suffered from painful spasms of the masseter (jaw closing) muscles, progressive tooth loss, and degeneration of the mandibular condyles. Treatment with steroids and provision of complete dentures improved the signs and symptoms...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28264544/efficacy-of-bont-a-and-swallowing-treatment-for-oropharyngeal-dysphagia-recovery-in-a-patient-with-lateral-medullary-syndrome-a-case-study
#15
Irene Battel, Isabella Koch, Federica Biddau, Carla Carollo, Francesco Piccione, Francesca Meneghello, Merico Antonio, Katie Palmer, Rosario Marchese Ragona
BACKGROUND: Wallenberg's syndrome (WS) is known as posterior inferior cerebellar artery syndrome. Dysphagia has been reported from 51% to 94% of the patients, ranging from mild to severe. CASE PRESENTATION: We reported a case of a patient (Male; 52yrs) with WS. MRI showed an intense hypodense area in the dorsolateral part of the ponto-medullary junction. The clinical signs were severe dysphagia, fed by PEG (FOIS 1; PAS 7), sialorrhea, trismus and ataxia. CLINICAL REHABILITATION IMPACT: Dysphagia was treated by botulinum toxin tipe A (BoNT-A), which was injected into the parotid and submandibular salivary glands, temporalis and masseter muscles, cricopharyngeal muscle associated with specific swallowing exercise and food trails...
March 6, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28256552/the-beaver-s-phylogenetic-lineage-illuminated-by-retroposon-reads
#16
Liliya Doronina, Andreas Matzke, Gennady Churakov, Monika Stoll, Andreas Huge, Jürgen Schmitz
Solving problematic phylogenetic relationships often requires high quality genome data. However, for many organisms such data are still not available. Among rodents, the phylogenetic position of the beaver has always attracted special interest. The arrangement of the beaver's masseter (jaw-closer) muscle once suggested a strong affinity to some sciurid rodents (e.g., squirrels), placing them in the Sciuromorpha suborder. Modern molecular data, however, suggested a closer relationship of beaver to the representatives of the mouse-related clade, but significant data from virtually homoplasy-free markers (for example retroposon insertions) for the exact position of the beaver have not been available...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28255752/is-there-enough-evidence-to-use-botulinum-toxin-injections-for-bruxism-management-a-systematic-literature-review
#17
REVIEW
Giancarlo De la Torre Canales, Mariana Barbosa Câmara-Souza, Camilla Fraga do Amaral, Renata Cunha Matheus Rodrigues Garcia, Daniele Manfredini
OBJECTIVE: The objective of the study was to conduct a systematic review of the literature assessing the effects of botulinum toxin (BoNT-A) injections in the management of bruxism. MATERIALS AND METHODS: Search for articles involved the PubMed, Scopus, Web of Science, Embase, Cochrane, Scielo and Lilacs databases. Specific terms were used and the search carried out from 1980 to March 2016 by three independent researchers. Randomized controlled studies (RCTs), prospective and before-after studies that applied BoNT-A at the masseter and/or temporalis muscles were included...
March 2, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28248711/retraction-comparison-of-four-facial-muscles-orbicularis-oculi-corrugator-supercilii-masseter-or-mylohyoid-as-best-predictor-of-good-conditions-for-intubation-a-randomised-blinded-trial-lee-hj-kim-ks-jeong-js-et-al
#18
https://www.readbyqxmd.com/read/28247345/isolation-culture-and-immunostaining-of-skeletal-muscle-myofibers-from-wildtype-and-nestin-gfp-mice-as-a-means-to-analyze-satellite-cell
#19
Pascal Stuelsatz, Paul Keire, Zipora Yablonka-Reuveni
Multinucleated myofibers, the functional contractile units of adult skeletal muscle, harbor mononuclear Pax7(+) myogenic progenitors on their surface between the myofiber basal lamina and plasmalemma. These progenitors, known as satellite cells, are the primary myogenic stem cells in adult muscle. This chapter describes our laboratory protocols for isolating, culturing, and immunostaining intact myofibers from mouse skeletal muscle as a means for studying satellite cell dynamics. The first protocol discusses myofiber isolation from the flexor digitorum brevis (FDB) muscle...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28246924/jsa-guideline-for-the-management-of-malignant-hyperthermia-crisis-2016
#20
REVIEW
(no author information available yet)
Malignant hyperthermia (MH) can be fatal if the crisis is not appropriately treated. It is an inherited disease usually triggered by the administration of volatile inhalational anesthetics and/or succinylcholine, a muscle relaxant. In a patient with suspected MH, the mechanism of calcium release from storage in the sarcoplasmic reticulum in the skeletal muscle is abnormally accelerated. Unexplained hypercarbia representing >55 mmHg of end-tidal carbon dioxide, tachycardia, and muscle rigidity (including masseter muscle rigidity) are early signs of the initiation of MH, because the metabolism is accelerated...
February 28, 2017: Journal of Anesthesia
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