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Ahasan Habib, Venkatachalem Sathish, Sanku Mallik, Bashir Khoda
Three-dimensional (3D) bio-printing is a revolutionary technology to reproduce a 3D functional living tissue scaffold in-vitro through controlled layer-by-layer deposition of biomaterials along with high precision positioning of cells. Due to its bio-compatibility, natural hydrogels are commonly considered as the scaffold material. However, the mechanical integrity of a hydrogel material, especially in 3D scaffold architecture, is an issue. In this research, a novel hybrid hydrogel, that is, sodium alginate with carboxymethyl cellulose (CMC) is developed and systematic quantitative characterization tests are conducted to validate its printability, shape fidelity and cell viability...
March 20, 2018: Materials
Matthew Aizpuru, Christopher Staley, William Reisman, Michael B Gottschalk, Mara L Schenker
OBJECTIVES: To investigate the determinants of length of stay (LOS) for patients surgically treated for femur fractures. DESIGN: Retrospective medical record review. SETTING: Urban Level I Trauma Center. PARTICIPANTS: Three hundred twenty-one patients operatively treated for femur fractures between July 12, 2015 and July 12, 2016. INTERVENTION: Intramedullary nailing, open reduction internal fixation, arthroplasty, or other (percutaneous screw or multiple hardware/technique) definitive fixation of femur fracture...
April 2018: Journal of Orthopaedic Trauma
M Loretto Muñoz, Deepali Jaju, Saroja Voruganti, Sulayma Albarwani, Afshin Aslani, Riad Bayoumi, Said Al-Yahyaee, Anthony G Comuzzie, Philip J Millar, Peter Picton, John S Floras, Ilja Nolte, Mohammed O Hassan, Harold Snieder
INTRODUCTION: Individual differences in heart rate variability (HRV) can be partly attributed to genetic factors that may be more pronounced during stress. Using data from the Oman Family Study (OFS), we aimed to estimate and quantify the relative contribution of genes and environment to the variance of HRV at rest and during stress; calculate the overlap in genetic and environmental influences on HRV at rest and under stress using bivariate analyses of HRV parameters and heart rate (HR)...
March 19, 2018: Journal of Hypertension
Mariana V Meireles, Ana Roberta P Pascom, Elisabeth C Duarte
OBJECTIVE: To identify clinical, sociodemographic and treatment-related factors associated with early virological response in HIV-infected adults starting antiretroviral treatment (ART) in Brazil in 2014-2015. METHODS: Data from four information systems from the Brazilian AIDS Program were combined to create a historical cohort. Unconditional logistic regression models were used to assess the likelihood of not achieving virological suppression (VLS), defined as having either a viral load count (VL) >200 copies/mL or an aids-related death recorded within 180±90 days after treatment initiation...
March 19, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
Dafang Zhang, Philip Blazar, Brandon E Earp
BACKGROUND: The purpose of this study was to determine the rates and types of complications and secondary surgeries after mini-open carpal tunnel release. METHODS: A retrospective cohort study was performed for 1,328 patients who underwent mini-open carpal tunnel release from August 2008 to July 2013. Patients were excluded for acute trauma, the index procedure being revision surgery, neoplasm, age less than 18 years, incomplete records, and postoperative follow-up less than 1 month, which yielded 904 patients who underwent 1,144 surgeries...
March 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
Sindhu Barola, Lea Fayad, Christine Hill, Thomas Magnuson, Michael Schweitzer, Vikesh Singh, Yen-I Chen, Saowanee Ngamruengphong, Mouen A Khashab, Anthony N Kalloo, Vivek Kumbhari
BACKGROUND: Management options for marginal ulcers (MU) vary from medical therapy to revision surgery. Medical therapy is often ineffective and revision surgery is associated with a high morbidity and possible recurrence. AIMS: To evaluate technical feasibility, efficacy, and safety of endoscopic management of MU by covering the ulcer bed using oversewing and/or deploying a fully covered self-expandable metallic stent (FCSEMS). METHODS: Medical records of consecutive patients who underwent endoscopic suturing and/or FCSEMS deployment for recalcitrant MU between August 2016 and June 2017 at a single academic center were reviewed...
March 19, 2018: Obesity Surgery
Carla Caballero, Sejal Mistry, Joe Vero, Elizabeth B Torres
The variability inherently present in biophysical data is partly contributed by disparate sampling resolutions across instrumentations. This poses a potential problem for statistical inference using pooled data in open access repositories. Such repositories combine data collected from multiple research sites using variable sampling resolutions. One example is the Autism Brain Imaging Data Exchange repository containing thousands of imaging and demographic records from participants in the spectrum of autism and age-matched neurotypical controls...
2018: Frontiers in Integrative Neuroscience
Béatrice Bouhanick, Jacques Amar, Laurence Amar, Philippe Gosse, Xavier Girerd, Yves Reznik, Claire Mounier-Vehier, Jean Philippe Baguet, Pierre Boutouyrie, Benoit Lepage, Pierre Lantelme, Bernard Chamontin
BACKGROUND: Predictive factors associated with normal blood pressure (BP) after unilateral adrenalectomy for primary aldosteronism (PA) are not clearly identified. AIMS: To evaluate the predictive value of arterial stiffness before surgery on BP after surgery. METHODS: During 2009-2013, 96 patients with PA due to unilateral adrenal adenoma who underwent surgery were enrolled in a multicentre open-label, prospective study. Aortic pulse wave velocity (PWV) was assessed before surgery...
March 16, 2018: Archives of Cardiovascular Diseases
Jessica E Steele, Ian R Woodcock, Adrian D Murphy, Monique M Ryan, Tony J Penington, Christopher J Coombs
INTRODUCTION: Masticatory muscles or their nerve supply are options for facial reanimation surgery, but their ability to create spontaneous smile has been questioned. This study assessed the percentage of healthy adults who activate the temporalis and masseter muscles during voluntary and spontaneous smile. METHODS: Healthy volunteer adults underwent electromyography (EMG) studies of the temporalis and masseter muscles during voluntary and spontaneous smile. Responses were repeated three times and recorded as negative, weakly positive, or strongly positive according to the activity observed...
March 6, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Rasool Baghbani, Mohammad Hassan Moradi, Mohammad Behgam Shadmehr
PURPOSE: Identifying and localizing the invisible and nonpalpable pulmonary nodules are among the main challenges surgeons face during open and thoracoscopic surgeries. This in vitro study explores the feasibility of utilizing a simple and safe electrical bioimpedance probe in locating the pulmonary nodules by sweeping the surface of the lung tissue. METHODS: A probe was designed with four spherical electrodes that were used for recording the bioimpedance spectrum of the lung tissue in a frequency range of 50 kHz to 5 MHz...
March 19, 2018: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
Shira Meir Drexler, Oliver T Wolf
During the postretrieval reconsolidation "window", memories can be disrupted, strengthened, or updated using various pharmacological and behavioral manipulations. Behavioral manipulations are more ecologically valid, thus allowing better understating of memory modification under natural conditions, but they can also be less potent compared to pharmacological interventions. In this review we present the current human and animal literature, aiming to understand the modulatory factors (i.e., task relevance, complexity, intensity) that promote reconsolidation disruption in purely behavioral means...
February 2018: Behavioral Neuroscience
Vladimir Zeldetz, Dmitry Natanel, Matthew Boyko, Alexander Zlotnik, Honore N Shiyntum, Julia Grinshpun, Dmitry Frank, Ruslan Kuts, Evgeni Brotfain, Jochanan Peiser
Contagious depression is a phenomenon that is yet to be fully recognized and this stems from insufficient material on the subject. At the moment, there is no existing format for studying the mechanism of action, prevention, containment, and treatment of contagious depression. The purpose of this study, therefore, was to establish the first animal model of contagious depression. Healthy rats can contract depressive behaviors if exposed to depressed rats. Depression is induced in rats by subjecting them to several manipulations of chronic unpredictable stress (CUS) over 5 weeks, as described in the protocol...
February 22, 2018: Journal of Visualized Experiments: JoVE
Fabian Grass, Matthieu Cachemaille, David Martin, Nicolas Fournier, Dieter Hahnloser, Catherine Blanc, Nicolas Demartines, Martin Hübner
The purpose of this prospective cohort study was to compare multimodal pain management and pain perception after open vs. laparoscopic colorectal surgery within enhanced recovery care. Pain scores at rest and at mobilization were prospectively assessed in consecutive patients using Visual Analog Scales (VAS 0-10) and consumption of different analgesics was recorded daily until 96 hours postoperatively. Uni- and multivariate risk factors for pain peaks (≥ 4/10) were identified by logistic regression and compared between two propensity score matched groups (open vs...
2018: Bioscience Trends
Hegde Sharat Shivaramaiah, Nidhi Relhan, Avinash Pathengay, Nitin Mohan, Harry W Flynn
Purpose: To report the clinical settings, causative organisms, antimicrobial susceptibilities, and treatment outcomes of patients with endophthalmitis caused by gram-positive bacteria resistant to vancomycin. Methods: Retrospective case series of all patients with culture-proven endophthalmitis caused by gram-positive bacteria resistant to vancomycin between January 2010 and December 2016 in LV Prasad Eye Institute, Visakhapatnam, India. Results: The current study included 14 patients...
June 2018: American Journal of Ophthalmology Case Reports
Sriram Garudeswaran, Sohyung Cho, Ikechukwu Ohu, Ali K Panahi
Recent technological progress offers the opportunity to significantly transform conventional open surgical procedures in ways that allow minimally invasive surgery (MIS) to be accomplished by specific operative instruments' entry into the body through key-sized holes rather than large incisions. Although MIS offers an opportunity for less trauma and quicker recovery, thereby reducing length of hospital stay and attendant costs, the complex nature of this procedure makes it difficult to master, not least because of the limited work area and constricted degree of freedom...
2018: Minimally Invasive Surgery
Richard S Mills, Heidi Sveistrup
The aims of this study were to (1) characterize anticipatory and reactive postural strategies in typically developing (TD) children and adolescents; (2) determine if TD youth shift from reactive to anticipatory mechanisms based on knowledge of platform movement; and (3) determine whether TD youth further modify postural strategies when additional information about the perturbation is provided. Sixteen typically developing youth aged 7-17 years stood with eyes open on a movable platform that progressively translated anteroposteriorly (20 cm peak-to-peak) through four speeds (0...
March 17, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Rob Stenner, Shea Palmer, Ralph Hammond
BACKGROUND: Person-centred approaches to care require clinicians to engage in trying to understand the full range of problems and concerns, treatment and investigation requests, and emotional and social issues that people bring to the consultation. If, however, the main issues of importance are not openly declared and discussed they cannot be addressed. This is likely to result in people receiving the care that clinicians think they need, rather than care based on individual needs and preferences...
March 10, 2018: Musculoskeletal Science & Practice
Hanisah Guro, Jai Young Cho, Ho-Seong Han, Yoo-Seok Yoon, YoungRok Choi, Sungho Kim, Kilhwan Kim, In Gun Hyun
BACKGROUND: To compare the surgical outcomes of major laparoscopic liver resection (LLR) and open liver resection (OLR) for hepatocellular carcinoma (HCC). METHODS: We retrospectively reviewed the medical records of 177 patients who underwent major liver resection for HCC between January 2004 and June 2015. We divided the 177 patients into two groups according to the type of procedure: major LLR (LLR group; n = 67) and major OLR (OLR group; n = 110). RESULTS: Procedures in the LLR group were right hepatectomy (30 patients), right posterior sectionectomy (28), left hepatectomy (11), right anterior sectionectomy (6), extended right hepatectomy (6), and central bisectionectomy (2)...
March 2018: Surgical Oncology
Oren Schwartz, Itzik Malka, Cara H Olsen, Israel Dudkiewicz, Tarif Bader
Introduction: Integration of females in combat units poses a unique challenge for army commanders around the world. The purpose of this study is to provide a detailed up-to-date situation report regarding overuse injuries among combat female warriors in the IDF (Israeli Defense Forces) in order to enable evidence-based decision-making, prevention policy, and further research of this highly significant military public health issue. Methods: A cross-sectional descriptive study was conducted including 2,519 females recruited to combat duties during the year of 2013...
March 14, 2018: Military Medicine
Wishal D Ramdas, Jan S A G Schouten, Carroll A B Webers
BACKGROUND: The aim of is to determine the association of vitamins with glaucoma by performing a systematic review and meta-analyses. METHODS: Studies on the relation of vitamins and glaucoma published up to December 2017 were identified in the PubMed and Embase database. Data on vitamins (method of assessment), glaucoma (type and method of assessment), study characteristics and quality were recorded. In case of multiple studies for one nutrient a meta-analysis was performed...
March 16, 2018: Nutrients
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