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https://www.readbyqxmd.com/read/29608865/vascularization-in-craniofacial-bone-tissue-engineering
#1
T Tian, T Zhang, Y Lin, X Cai
Craniofacial bones, separate from the appendicular skeleton, bear a significant amount of strain and stress generated from mastication-related muscles. Current research on the regeneration of craniofacial bone focuses on the reestablishment of an elaborate vascular network. In this review, current challenges and efforts particularly in advances of scaffold properties and techniques for vascularization remodeling in craniofacial bone tissue engineering will be discussed. A microenvironment of ischemia and hypoxia in the biomaterial core drives propagation and reorganization of endothelial progenitor cells (EPCs) to assemble into a primitive microvascular framework...
March 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29602394/the-warburg-effect-in-diabetic-kidney-disease
#2
REVIEW
Guanshi Zhang, Manjula Darshi, Kumar Sharma
Diabetic kidney disease (DKD) is the leading cause of morbidity and mortality in diabetic patients. Defining risk factors for DKD using a reductionist approach has proven challenging. Integrative omics-based systems biology tools have shed new insights in our understanding of DKD and have provided several key breakthroughs for identifying novel predictive and diagnostic biomarkers. In this review, we highlight the role of the Warburg effect in DKD and potential regulating factors such as sphingomyelin, fumarate, and pyruvate kinase muscle isozyme M2 in shifting glucose flux from complete oxidation in mitochondria to the glycolytic pathway and its principal branches...
March 2018: Seminars in Nephrology
https://www.readbyqxmd.com/read/29435856/modern-theories-of-pelvic-floor-support-a-topical-review-of-modern-studies-on-structural-and-functional-pelvic-floor-support-from-medical-imaging-computational-modeling-and-electromyographic-perspectives
#3
REVIEW
Yun Peng, Brandi D Miller, Timothy B Boone, Yingchun Zhang
PURPOSE OF REVIEW: Weakened pelvic floor support is believed to be the main cause of various pelvic floor disorders. Modern theories of pelvic floor support stress on the structural and functional integrity of multiple structures and their interplay to maintain normal pelvic floor functions. Connective tissues provide passive pelvic floor support while pelvic floor muscles provide active support through voluntary contraction. Advanced modern medical technologies allow us to comprehensively and thoroughly evaluate the interaction of supporting structures and assess both active and passive support functions...
February 12, 2018: Current Urology Reports
https://www.readbyqxmd.com/read/29427011/self-learning-computers-for-surgical-planning-and-prediction-of-postoperative-alignment
#4
Renaud Lafage, Sébastien Pesenti, Virginie Lafage, Frank J Schwab
PURPOSE: In past decades, the role of sagittal alignment has been widely demonstrated in the setting of spinal conditions. As several parameters can be affected, identifying the driver of the deformity is the cornerstone of a successful treatment approach. Despite the importance of restoring sagittal alignment for optimizing outcome, this task remains challenging. Self-learning computers and optimized algorithms are of great interest in spine surgery as in that they facilitate better planning and prediction of postoperative alignment...
February 2018: European Spine Journal
https://www.readbyqxmd.com/read/29399735/rotator-cuff-repair-post-operative-rehabilitation-concepts
#5
REVIEW
Terrance A Sgroi, Michelle Cilenti
PURPOSE OF REVIEW: With improvements in surgical techniques and increased knowledge of rotator cuff healing, there was a need to identify a safe progression after rotator cuff repair. The rehabilitation specialist plays an integral role in the care of these patients, and by implementing an evidence and criteria-based model, patients may be able to return to their prior levels of function sooner with fewer complications. RECENT FINDINGS: Timing of progression for rotator cuff patients should align not only with healing but also potential strain on the involved tissue...
March 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29330951/dynamic-musculoskeletal-functional-morphology-integrating-dicect-and-xromm
#6
Courtney P Orsbon, Nicholas J Gidmark, Callum F Ross
The tradeoff between force and velocity in skeletal muscle is a fundamental constraint on vertebrate musculoskeletal design (form:function relationships). Understanding how and why different lineages address this biomechanical problem is an important goal of vertebrate musculoskeletal functional morphology. Our ability to answer questions about the different solutions to this tradeoff has been significantly improved by recent advances in techniques for quantifying musculoskeletal morphology and movement. Herein, we have three objectives: (1) review the morphological and physiological parameters that affect muscle function and how these parameters interact; (2) discuss the necessity of integrating morphological and physiological lines of evidence to understand muscle function and the new, high resolution imaging technologies that do so; and (3) present a method that integrates high spatiotemporal resolution motion capture (XROMM, including its corollary fluoromicrometry), high resolution soft tissue imaging (diceCT), and electromyography to study musculoskeletal dynamics in vivo...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28993147/techniques-of-ectopic-reservoir-placement-and-their-pitfalls
#7
Nannan Thirumavalavan, Martin S Gross, Ricardo Munarriz
BACKGROUND: Ectopic placement of penile prosthesis reservoirs has become more common in patients whose space of Retzius has been compromised. AIM: To describe techniques and instruments used to place penile prosthesis reservoirs ectopically. METHODS: We present our method of placing ectopic reservoirs and review the literature for other techniques. We also catalog the instruments used for this purpose. OUTCOMES: Similar to traditional reservoir placement, successful ectopic reservoir implantation requires good cosmetic and functional success and low complication rates...
October 6, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28938330/temporal-scalp-thickness-body-mass-index-and-suprafascial-placement-of-receiver-coil-of-the-cochlear-implant
#8
Orhan Ozturan, Alper Yenigun, Erol Senturk, Omer Faruk Calim, Fadlullah Aksoy, Sabri Baki Eren
OBJECTIVE: The objectives of this study are to demonstrate the relationship between the thickness of the temporal scalp and body mass index (BMI), age, and sex, and to present the surgical technique which we perform in patients with a thick scalp. MATERIALS AND METHODS: This is a retrospective, cross-sectional study. This study was performed in a tertiary referral center. Cranial computed tomography images of 469 subjects were included in the study. These subjects were evaluated according to BMI, age, and sex...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28882000/integrative-deep-models-for-alternative-splicing
#9
Anupama Jha, Matthew R Gazzara, Yoseph Barash
Motivation: Advancements in sequencing technologies have highlighted the role of alternative splicing (AS) in increasing transcriptome complexity. This role of AS, combined with the relation of aberrant splicing to malignant states, motivated two streams of research, experimental and computational. The first involves a myriad of techniques such as RNA-Seq and CLIP-Seq to identify splicing regulators and their putative targets. The second involves probabilistic models, also known as splicing codes, which infer regulatory mechanisms and predict splicing outcome directly from genomic sequence...
July 15, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28844055/what-is-mr-spectroscopy
#10
Karen Angela Manias, Andrew Peet
1 H-Magnetic Resonance Spectroscopy (MRS) is a novel advanced imaging technique used as an adjunct to MRI to reveal complementary non-invasive information about the biochemical composition of imaged tissue. Clinical uses in paediatrics include aiding diagnosis of brain tumours, neonatal disorders such as hypoxic-ischaemic encephalopathy, inherited metabolic diseases, traumatic brain injury, demyelinating conditions and infectious brain lesions. MRS has potential to improve diagnosis and treatment monitoring of childhood brain tumours and other CNS diseases, facilitate biopsy and surgical planning, and provide prognostic biomarkers...
August 26, 2017: Archives of Disease in Childhood. Education and Practice Edition
https://www.readbyqxmd.com/read/28675678/3d-bioprinting-and-the-current-applications-in-tissue-engineering
#11
REVIEW
Ying Huang, Xiao-Fei Zhang, Guifang Gao, Tomo Yonezawa, Xiaofeng Cui
Bioprinting as an enabling technology for tissue engineering possesses the promises to fabricate highly mimicked tissue or organs with digital control. As one of the biofabrication approaches, bioprinting has the advantages of high throughput and precise control of both scaffold and cells. Therefore, this technology is not only ideal for translational medicine but also for basic research applications. Bioprinting has already been widely applied to construct functional tissues such as vasculature, muscle, cartilage, and bone...
July 4, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28460192/proton-density-fat-fraction-of-rotator-cuff-muscles-is-associated-with-isometric-strength-10-years-after-rotator-cuff-repair-a-quantitative-magnetic-resonance-imaging-study-of-the-shoulder
#12
Dimitrios C Karampinos, Christian Holwein, Stefan Buchmann, Thomas Baum, Stefan Ruschke, Alexandra S Gersing, Reto Sutter, Andreas B Imhoff, Ernst J Rummeny, Pia M Jungmann
BACKGROUND: Quantitative muscle fat-fraction magnetic resonance (MR) imaging techniques correlate with semiquantitative Goutallier scores with failure after rotator cuff (RC) repair. PURPOSE: To investigate the relationship of proton density fat fraction (PDFF) of the RC muscles with semiquantitative MR scores, cartilage T2 relaxation times, and clinical isometric strength measurements in patients 10 years after unilateral RC repair. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
July 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28453512/a-reproducible-semi-automatic-method-to-quantify-the-muscle-lipid-distribution-in-clinical-3d-ct-images-of-the-thigh
#13
Alexander Mühlberg, Oleg Museyko, Jean-Denis Laredo, Klaus Engelke
Many studies use threshold-based techniques to assess in vivo the muscle, bone and adipose tissue distribution of the legs using computed tomography (CT) imaging. More advanced techniques divide the legs into subcutaneous adipose tissue (SAT), anatomical muscle (muscle tissue and adipocytes within the muscle border) and intra- and perimuscular adipose tissue. In addition, a so-called muscle density directly derived from the CT-values is often measured. We introduce a new integrated approach to quantify the muscle-lipid system (MLS) using quantitative CT in patients with sarcopenia or osteoporosis...
2017: PloS One
https://www.readbyqxmd.com/read/28402325/the-bioenergetics-of-inflammation-insights-into-obesity-and-type-2-diabetes
#14
REVIEW
K N Keane, E K Calton, R Carlessi, P H Hart, P Newsholme
Diabetes mellitus is one of the most common chronic metabolic disorders worldwide, and its incidence in Asian countries is alarmingly high. Type 2 diabetes (T2DM) is closely associated with obesity, and the staggering rise in obesity is one of the primary factors related to the increased frequency of T2DM. Low-grade chronic inflammation is also accepted as an integral metabolic adaption in obesity and T2DM, and is believed to be a major player in the onset of insulin resistance. However, the exact mechanism(s) that cause a persistent chronic low-grade infiltration of leukocytes into insulin-target tissues such as adipose, skeletal muscle and liver are not entirely known...
July 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28363767/time-scaling-based-sliding-mode-control-for-neuromuscular-electrical-stimulation-under-uncertain-relative-degrees
#15
Tiago Roux Oliveira, Luiz Rennó Costa, João Marcos Yamasaki Catunda, Alexandre Visintainer Pino, William Barbosa, Márcio Nogueira de Souza
This paper addresses the application of the sliding mode approach to control the arm movements by artificial recruitment of muscles using Neuromuscular Electrical Stimulation (NMES). Such a technique allows the activation of motor nerves using surface electrodes. The goal of the proposed control system is to move the upper limbs of subjects through electrical stimulation to achieve a desired elbow angular displacement. Since the human neuro-motor system has individual characteristics, being time-varying, nonlinear and subject to uncertainties, the use of advanced robust control schemes may represent a better solution than classical Proportional-Integral (PI) controllers and model-based approaches, being simpler than more sophisticated strategies using fuzzy logic or neural networks usually applied in this control problem...
March 28, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28242166/dysphagia-optimised-intensity-modulated-radiotherapy-techniques-in-pharyngeal-cancers-is-anyone-going-to-swallow-it
#16
REVIEW
I Petkar, S Bhide, K Newbold, K Harrington, C Nutting
Dysphagia after primary chemoradiotherapy or radiation alone in pharyngeal cancers can have a devastating impact on a patient's physical, social and emotional state. Establishing and validating efficient dysphagia-optimised radiotherapy techniques is, therefore, of paramount importance in an era where health-related quality of life measures are increasingly influential determinants of curative management strategies, particularly as the incidence of good prognosis, human papillomavirus-driven pharyngeal cancer in younger patients continues to rise...
July 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28161207/a-simplified-surgical-algorithm-for-flap-reconstruction-of-eyebrow-defects
#17
Hai-Peng Liu, Ying Shao, Xiao-Jie Yu, Duo Zhang
BACKGROUND: Partial or total eyebrow defects after trauma or tumor excisions have been repaired by several surgical technique and algorithms. However, these algorithms are often complicated and difficult to apply clinically. We therefore established a simplified surgical algorithm for the treatment of eyebrow defects using flap reconstruction. METHODS: During the period between January 2009 and December 2015, a total of 21 Chinese patients (12 males, 9 females) with eyebrow defects were treated with eyebrow flap reconstruction...
April 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28137969/cerebellar-m1-connectivity-changes-associated-with-motor-learning-are-somatotopic-specific
#18
Danny A Spampinato, Hannah J Block, Pablo A Celnik
One of the functions of the cerebellum in motor learning is to predict and account for systematic changes to the body or environment. This form of adaptive learning is mediated by plastic changes occurring within the cerebellar cortex. The strength of cerebellar-to-cerebral pathways for a given muscle may reflect aspects of cerebellum-dependent motor adaptation. These connections with motor cortex (M1) can be estimated as cerebellar inhibition (CBI): a conditioning pulse of transcranial magnetic stimulation delivered to the cerebellum before a test pulse over motor cortex...
March 1, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27824734/targeted-muscle-reinnervation-for-transradial-amputation-description-of-operative-technique
#19
Emily N Morgan, Benjamin Kyle Potter, Jason M Souza, Scott M Tintle, George P Nanos
Targeted muscle reinnervation (TMR) is a revolutionary surgical technique that, together with advances in upper extremity prostheses and advanced neuromuscular pattern recognition, allows intuitive and coordinated control in multiple planes of motion for shoulder disarticulation and transhumeral amputees. TMR also may provide improvement in neuroma-related pain and may represent an opportunity for sensory reinnervation as advances in prostheses and haptic feedback progress. Although most commonly utilized following shoulder disarticulation and transhumeral amputations, TMR techniques also represent an exciting opportunity for improvement in integrated prosthesis control and neuroma-related pain improvement in patients with transradial amputations...
December 2016: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/27812370/post-gwas-prioritization-through-data-integration-provides-novel-insights-on-chronic-obstructive-pulmonary-disease
#20
Qiongshi Lu, Chentian Jin, Jiehuan Sun, Russell Bowler, Katerina Kechris, Naftali Kaminski, Hongyu Zhao
Rich collections of genomic and epigenomic annotations, availabilities of large population cohorts for genome-wide association studies (GWAS), and advancements in data integration techniques provide the unprecedented opportunity to accelerate discoveries in complex disease studies through integrative analyses. In this paper, we apply a variety of approaches to integrate GWAS summary statistics of chronic obstructive pulmonary disease (COPD) with functional annotations to illustrate how data integration could help researchers understand complex human diseases...
2016: Statistics in Biosciences
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