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Christian Baeumer, Martin Janson, Beate Timmermann, Jörg Wulff
AIM: To assess if apertures shall be mounted upstream or downstream of a range shifting block if these field-shaping devices are combined with the pencil-beam scanning delivery technique (PBS). The lateral dose fall-off served as a benchmark parameter. Both options realizing PBS-with-apertures were compared to the uniform scanning mode. We also evaluated the difference regarding the out-of-field dose caused by interactions of protons in beam-shaping devices.
 Methods: The potential benefit of the downstream configuration over the upstream configuration was estimated analytically...
March 19, 2018: Physics in Medicine and Biology
Mingzhao Guo, Lufan Yang, Jiahui Li, Song Jiao, Yujun Wang, Guangsheng Luo, Huimin Yu
In this work, the drastic change in the reaction rate throughout the acrylonitrile bio-hydration reaction, which was catalyzed by Rhodococcus ruber TH3 free cells in a two-liquid-phase system, was studied by changing the initial mass fraction of acrylonitrile and acrylamide. We found that the reaction rate was sensitively affected by the contact area between the acrylonitrile droplets and cells. With the acrylonitrile mass fraction of 3 wt%, the cell solution of 800 U/mL could make the superficial area of acrylonitrile droplets saturated...
March 19, 2018: Bioprocess and Biosystems Engineering
Yusuke Tsuyuguchi, Tomoyuki Nakasa, Masakazu Ishikawa, Yasunari Ikuta, Mikiya Sawa, Masahiro Yoshikawa, Nobuo Adachi
Ankle arthroscopy is a minimally invasive technique for ankle joint treatment. However, injury to the intermediate dorsal cutaneous nerve (IDCN) and the medial dorsal cutaneous nerve (MDCN) is a common complication during anterior portal placement. To prevent injuries, methods such as palpating the nerves topographically and marking the nerves by transilluminating the skin with an arthroscope have been proposed. Easier and more definitive methods of identifying the IDCN and MDCN should result in a reduction of complications...
February 2018: Arthroscopy Techniques
Wilson Wai Shun Hau, Tun Hing Lui, Wai Kit Ngai
Post-traumatic peroneal tendon subluxation or dislocation is most commonly due to injury to the superior peroneal retinaculum. Acute repair of the retinaculum is an option for active athletes who desire quick return of sport activity. In general, conventional open surgeries require extensive exposure of the injured superficial peroneal retinaculum and have potential risks of scar formation, sural nerve injury, limited range of movement, peroneal tendon re-subluxation, and tendon irritation. The purpose of this Technical Note is to describe the details of endoscopic superior peroneal retinaculum reconstruction...
January 2018: Arthroscopy Techniques
Katherine Peters, Jamie T Caracciolo, Evita Henderson-Jackson, Odion Binitie
Myopericytomas are rare, slow-growing benign perivascular tumors most commonly arising within the superficial subcutaneous soft tissues of the lower extremity. They represent one of several related perivascular tumors of myoid lineage with similar morphology and shared immunohistochemical profile including positive staining for smooth muscle actin. Histologically, myopericytoma exhibit concentric, perivascular proliferation of spindled myoid cells with bland elongated nuclei and associated blood vessels. A solitary well-demarcated nodule or mass is typically referred to as myopericytoma, whereas an infiltrative multinodular lesion has more recently been termed myopericytomatosis...
February 2018: Radiology Case Reports
Stephanie Ascough, Suzanna Paterson, Christopher Chiu
Respiratory syncytial virus (RSV) and influenza are among the most important causes of severe respiratory disease worldwide. Despite the clinical need, barriers to developing reliably effective vaccines against these viruses have remained firmly in place for decades. Overcoming these hurdles requires better understanding of human immunity and the strategies by which these pathogens evade it. Although superficially similar, the virology and host response to RSV and influenza are strikingly distinct. Influenza induces robust strain-specific immunity following natural infection, although protection by current vaccines is short-lived...
2018: Frontiers in Immunology
J Boujenah, P Santulli, E Mathieu-d'Argent, C Decanter, C Chauffour, P Poncelet
INTRODUCTION: Using the structured methodology of French guidelines (HAS-CNGOF), the aim of this chapter was to formulate good practice points (GPP), in relation to optimal non-ART management of endometriosis related to infertility, based on the best available evidence in the literature. MATERIALS AND METHODS: This guideline was produced by a group of experts in the field including a thorough systematic search of the literature (from January 1980 to March 2017)...
March 15, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
V Arantes, J Espinoza-Ríos
The incidence of esophageal cancer is steadily increasing worldwide. Outcome is poor, given that the majority of cases are diagnosed at advanced disease stages. However, when detected at early stages, esophageal tumors can be curatively treated through less invasive methods, resulting in a 5-year survival rate above 90%. Therefore, it is essential to identify the high-risk population and recommend those patients undergo screening using high-resolution endoscopy, adding the resources of chromoendoscopy with Lugol solution (or digital chromoendoscopy) and magnification...
March 15, 2018: Revista de Gastroenterología de México
Massimiliano Valeriani, Costanza Pazzaglia, Vincenzo Rizzo, Angelo Quartarone, Catello Vollono
OBJECTIVE: To investigate the mechanism subtending the analgesic effect of high frequency non-painful somatosensory stimulation. METHODS: Laser evoked potentials (LEPs) and laser-pain rating were obtained from healthy subjects to stimulation of different parts of the body. LEPs were recorded at baseline and during non-painful electrical stimulation of the superficial branch of the right radial nerve (RRES). RESULTS: RRES reduced N2/P2 LEP amplitude to right radial (F(8,10)  = 82...
February 24, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
Hin-Lun Liu, Suet-Ying Pang, Chung-Ching Lee, Melody Man-Kuen Wong, Hon-Ping Chung, Yu-Wai Chan
INTRODUCTION: Vascularized lymph node transfer (VLNT) has become very popular in the treatment of secondary lymphedema. However, the mechanism has not been clearly elucidated. The purpose of this study was (1) to evaluate the outcome of vascularized groin lymph node (VGLN) transfer using axilla as a recipient site in patients with breast cancer-related lymphedema (BCRL) and (2) to provide radiological evidence of lymphangiogenesis in VLNT. METHODS: Between August 2013 and June 2016, 30 consecutive patients with a mean age of 60 years underwent VGLN transfer for BCRL...
February 28, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Laura E Downie, Cecilia Naranjo Golborne, Merry Chen, Ngoc Ho, Cam Hoac, Dasun Liyanapathirana, Carol Luo, Ruo Bing Wu, Holly R Chinnery
Our aim was to compare regeneration of the sub-basal nerve plexus (SBNP) and superficial nerve terminals (SNT) following corneal epithelial injury. We also sought to compare agreement when quantifying nerve parameters using different image-analysis techniques. Anesthetized, female C57BL/6 mice received central 1-mm corneal epithelial abrasions. Four-weeks post-injury, eyes were enucleated and processed for PGP9.5 to visualize the corneal nerves using wholemount immunofluorescence staining and confocal microscopy...
March 14, 2018: Experimental Eye Research
Fuat Arikan, Marta Rubiera, Joaquín Serena, Ana Rodríguez-Hernández, Darío Gándara, Carles Lorenzo-Bosquet, Alejandro Tomasello, Ivette Chocrón, Maximiliano Quintana-Corvalan, Juan Sahuquillo
INTRODUCTION: Cerebral revascularization techniques are an indispensable tool in the current armamentarium of vascular neurosurgeons. We present revascularization surgery experience and results in both moyamoya disease and occlusive cerebral ischaemia. PATIENTS AND METHODS: Patients with ischaemic occlusive disease and moyamoya disease who underwent microsurgical revascularization between October 2014 and September 2017 were analysed. RESULTS: In the study period, 23 patients with occlusive ischaemic disease underwent microsurgical revascularization...
March 14, 2018: Neurocirugía
Daniel Walters, Belal Al Khiami, Ehtisham Mahmud, Mitul Patel
PURPOSE: The optical-coherence tomography guided Ocelot catheter has previously been shown to be a safe and effective tool for crossing peripheral chronic total occlusions. However, the existing literature focuses mostly on the superficial femoral artery, without prior evidence of use within the suprainguinal vasculature. CASE SERIES: We present the first known cases of the Ocelot catheter for revascularization of chronic total occlusions in the iliac vasculature...
February 13, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
Xiao Yang, Massoud A Leesar, Hinan Ahmed, Vasili Lendel, Gerardo Rodriguez, Deniz Mutlu, Ian Cawich, Anand Prasad, Meagan Oglesby, Kostas Marmagkiolis, Nathanael E Phillips, Dijkstra Jouke, Joel Michalek, Qianqian Liu, Thomas Milner, Austin McElroy, Taylor Hoyt, Marc D Feldman, Mehmet Cilingiroglu
PURPOSE: To compare OCT identified white thrombus decline, neointimal hyperplasia and clinical outcomes of patients treated with ticagrelor plus aspirin with those patients treated with clopidogrel plus aspirin after peripheral interventions. BACKGROUND: Ticagrelor is a potent platelet inhibitor. In patients with coronary artery disease, ticagrelor and aspirin demonstrated reduced rates of stent thrombosis, compared to aspirin and clopidogrel. The clinical importance of potent antiplatelet inhibition after peripheral endovascular interventions is unknown...
February 23, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
Marco Messina, Harminder S Dua
PURPOSE: To evaluate the effect of once daily administration of chitosan-N-acetylcysteine (Lacrimera® ) in the management of dry eye disease (DED). METHODS: Eighteen patients (3 male, 15 female) aged 25-86 years (mean 61.1) and suffering from moderate to severe DED with superficial punctate keratitis (SPK) were retrospectively evaluated after a trial of Lacrimera® drops (1 drop in the morning for 5 days only). All the patients were using other artificial tears before the treatment...
March 16, 2018: International Ophthalmology
Nicholas P McKenna, Eric J Dozois, John H Pemberton, Amy L Lightner
PURPOSE: To determine the impact of patient sex on operative characteristics, short-term complications, and long-term functional outcomes following ileal pouch-anal anastomosis (IPAA) for chronic ulcerative colitis (CUC). METHODS: A retrospective review was performed on all patients undergoing two- or three-stage IPAA for CUC at our institution between January 2002 and August 2013. Patient demographics, operative characteristics, 30-day postoperative complications, and long-term functional outcomes from annual survey data were analyzed comparing men and women patients...
March 16, 2018: International Journal of Colorectal Disease
T Hatahet, M Morille, A Hommoss, J M Devoisselle, R H Müller, S Bégu
Quercetin is a flavonoid with strong antioxidant and antiinflammatory activities considered as a potential drug candidate for skin exogenous supplementation. Nevertheless, crude quercetin suffers from poor water solubility and consequently topical inactivity. Therefore, quercetin formulation within a suitable system that overcomes its solubility limitation is a matter of investigation. Three approaches were tested to improve quercetin delivery to skin: liposomes, lipid nanocapsules (LNC) and smartCrystals®...
March 13, 2018: International Journal of Pharmaceutics
Yuji Watanabe, Chie Sakuma, Hiroyuki Yaginuma
During embryonic brain development, groups of particular neuronal cells migrate tangentially to participate in the formation of a laminated structure. Two distinct types of tangential migration in the middle and superficial layers have been reported in the development of the avian optic tectum. Here we show the dynamics of tangential cell movement in superficial layers of developing chick optic tectum. Confocal time-lapse microscopy in organotypic slice cultures and flat-mount cultures revealed that vigorous cell migration continued during E6...
March 13, 2018: Developmental Biology
Pouya Nezafati, Ali Shomali, Mahdi Kahrom, Sahar Omidvar Tehrani, Minoo Dianatkhah, Mohammad Hassan Nezafati
BACKGROUND: The present study aimed to compare postoperative complications commonly revealed after sternotomy closure by new sternal ZipFix™ (Synthes GmbH, Oberdorf, Switzerland) implant and conventional steel wire. METHODS: Among the initial 360 subjects, 326 patients enrolled in this randomised control trial who were candidates for cardiac surgery from April 2014 to March 2015. After the surgery, the sternal closure was randomly done with poly-ether-ether-ketone (PEEK) based sternal ZipFix (ZF) on the sternal body (n=168) or with conventional wires (CWs) (n=158)...
February 8, 2018: Heart, Lung & Circulation
Ichiro Tonogai, Fumio Hayashi, Yoshihiro Tsuruo, Koichi Sairyo
Arthroscopy is an important and minimally invasive diagnostic and therapeutic tool. However, the risk of injury to the neurovascular structures around the portals exists during arthroscopy of the ankle. In the present study, we measured the distance between each portal and the adjacent neurovascular structures with the foot in plantarflexion and dorsiflexion in the Japanese population. Standard anterolateral (AL), anteromedial, posterolateral (PL), and posteromedial portal positions were identified in 6 fresh adult cadaveric feet...
March 13, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
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