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Ashley Currier, Thérèse Migraine-George
Understandings of African lesbian sexualities have been affected by silence, repression, and uncertainty. The subject of lesbian experiences and sexualities in Africa constitutes an opportunity for feminist scholars to address the transnational politics of knowledge production about African lesbians' lives and the contours of lesbian art, activism, and relationships in African nations. This article contextualizes the state of research on African lesbian sexualities and introduces the special issue.
October 21, 2016: Journal of Lesbian Studies
Aram Hong, Heeseon Jang, Changseop Jeong, Myoung Choul Choi, Jiyoung Heo, Nam Joon Kim
We obtained resonant two-photon ionization circular dichroism (R2PICD) spectra of jet-cooled phenylalanine (Phe) and its hydrated clusters (Phe(H2O)n, n=1-2) near the origin band of the S0-S1 transition. The R2PICD spectra of Phe exhibit well-resolved CD bands of six different conformers present in the jet, which vary in sign and magnitude depending on their conformations. We revised the previous structural assignments of the Phe conformers based on the comparison between the experimental and theoretical CD signs, infrared spectra, and rotational band contours...
October 21, 2016: Journal of Physical Chemistry Letters
Qing Yu, Weimin Ye, Tom Powers
Gracilacus wuae n. sp. from soil associated with cow parsnip in Ontario, Canada is described and illustrated. Morphologically, females have a long stylet ranging from 80 to 93 µm long, the lip region not offset from the body contour, without lateral lips but with large and flat submedian lobes, the mouth opening slit-like elongated laterally and surrounded by lateral flaps, the excretory pore is anterior to the knobs of the stylet; males without stylet and the pharynx degenerated. The fourth-stage juveniles lack a stylet, the pharynx degenerated, and can be differentiated into preadult females and males based on the position of the genital primordia...
September 2016: Journal of Nematology
D Kaba, D Berte, D Ta Bi Tra, J Tellería, P Solano, J-P Dujardin
This is the first study to explore the potential of various geometric morphometrics methods to help the morphological diagnostic of tsetse species, vectors of human and animal trypanosomiases in sub-Saharan Africa. We compared landmarks, semilandmarks and outlines techniques on male and female samples of species, and suggested adapted strategies according to the countries and their own Glossina fauna. We could compare up to 7 taxa belonging to the three main subgenera of the Glossina genus: Nemorhina (5 species), Glossina (1 species) and Austenina (1 species)...
October 17, 2016: Infection, Genetics and Evolution
Ammara Usman, Umar Sadat, Zhongzhao Teng, Martin J Graves, Jonathan R Boyle, Kevin Varty, Paul D Hayes, Jonathan H Gillard
BACKGROUND: Functional magnetic resonance (MR) imaging of atheroma using contrast media enables assessment of the systemic severity of atherosclerosis in different arterial beds. Whether black-blood imaging has similar ability remains widely unexplored. In this study, we evaluate whether black-blood imaging can differentiate carotid plaques of patients with and without coronary artery disease (CAD) in terms of morphological and biomechanical features of plaque vulnerability, thereby allowing assessment of the systemic severity nature of atherosclerosis in different arterial beds...
October 17, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Eva Meia Rüegg, Paul Gniadek, Ali Modarressi, Denise Baratti-Mayer, Brigitte Pittet-Cuénod
INTRODUCTION: Reconstruction of facial bone defects in children is challenging. The use of well-vascularized bone is mandatory to obtain stable lasting results. This study reports our experience of facial bone reconstruction using prefabricated vascularized calvarium flaps. METHODS: Retrospective case series of 50 patients who underwent 52 maxillary, malar, and mandibular reconstructions between 1988 and 2014 using prefabricated vascularized calvarium flaps. Forty-nine patients suffered from noma sequels; one patient had craniofacial cleft Tessier 3-11...
September 10, 2016: Journal of Cranio-maxillo-facial Surgery
Lucas Goense, Peter S N van Rossum, Jelle P Ruurda, Marco van Vulpen, Stella Mook, Gert J Meijer, Richard van Hillegersberg
BACKGROUND: Concerns have been raised regarding the toxicity of neoadjuvant chemoradiotherapy (nCRT) for esophageal cancer that could contribute to an increased risk of postoperative complications. The aim of this study was to determine the influence of the radiation dose to the gastric fundus on the risk of postoperative anastomotic leakage in patients undergoing nCRT followed by transthoracic esophagectomy. METHODS: Between January 2012 and July 2015, 97 consecutive patients who underwent nCRT followed by transthoracic esophagectomy were included in this single-center cohort study...
October 17, 2016: Annals of Thoracic Surgery
Ji Yeoun Yoo, Lara V Marcuse, Madeline C Fields, Jillian Rosengard, Maria Vittoria Traversa, Nicolas Gaspard, Lawrence J Hirsch
INTRODUCTION: Brief potentially ictal rhythmic discharges (B(I)RDs) have been described in neonates and critically ill adults, and their association with seizures has been demonstrated. Their significance in non-critically ill adults remains unclear. We aimed to investigate their prevalence, electrographic characteristics and clinical significance. METHODS: We identified adult patients with B(I)RDs who received long term EEG recordings either in the epilepsy monitoring unit or in the ambulatory setting...
October 19, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Yasheng Chen, Rajat Dhar, Laura Heitsch, Andria Ford, Israel Fernandez-Cadenas, Caty Carrera, Joan Montaner, Weili Lin, Dinggang Shen, Hongyu An, Jin-Moo Lee
Although cerebral edema is a major cause of death and deterioration following hemispheric stroke, there remains no validated biomarker that captures the full spectrum of this critical complication. We recently demonstrated that reduction in intracranial cerebrospinal fluid (CSF) volume (∆ CSF) on serial computed tomography (CT) scans provides an accurate measure of cerebral edema severity, which may aid in early triaging of stroke patients for craniectomy. However, application of such a volumetric approach would be too cumbersome to perform manually on serial scans in a real-world setting...
2016: NeuroImage: Clinical
Leontine E Becking, Christiaan A de Leeuw, Bram Knegt, Diede L Maas, Nicole J de Voogd, Abdunnur, Iwan Suyatna, Katja T C A Peijnenburg
Marine lakes, with populations in landlocked seawater and clearly delineated contours, have the potential to provide a unique model to study early stages of evolution in coastal marine taxa. Here we ask whether populations of the mussel Brachidontes from marine lakes in Berau, East Kalimantan (Indonesia) are isolated from each other and from the coastal mangrove systems. We analyzed sequence data of one mitochondrial marker (Cytochrome Oxidase I (COI)), and two nuclear markers (18S and 28S). In addition, we examined shell shape using a geometric morphometric approach...
2016: PeerJ
Ying Wang, Andy Sischka, Volker Walhorn, Katja Tönsing, Dario Anselmetti
Fluorescent DNA dyes are broadly used in many biotechnological applications for detecting and imaging DNA in cells and gels. Their binding alters the structural and nanomechanical properties of DNA and affects the biological processes that are associated with it. Although interaction modes like intercalation and minor groove binding already have been identified, associated mechanic effects like local elongation, unwinding, and softening of the DNA often remain in question. We used magnetic tweezers to quantitatively investigate the impact of three DNA-binding dyes (YOYO-1, DAPI, and DRAQ5) in a concentration-dependent manner...
October 18, 2016: Biophysical Journal
Rolf E Isele-Holder, Julia Jäger, Guglielmo Saggiorato, Jens Elgeti, Gerhard Gompper
Worm-like filaments, which are propelled by a tangential homogeneous force along their contour, are studied as they push loads of different shapes and sizes. The resulting dynamics is investigated using Langevin dynamics simulations. The effects of size and shape of the load, propulsion strength, and thermal noise are systematically explored. The propulsive force and hydrodynamic friction of the load cause a compression in the filament that results in a buckling instability and versatile motion. Distinct regimes of elongated filaments, curved filaments, beating filaments, and filaments with alternating beating and circular motion are identified, and a phase diagram depending on the propulsion strength and the size of the load is constructed...
October 19, 2016: Soft Matter
Shaishav Bhagat, Alexander Z E Durst, Am S Rai
With an increasingly aging population, adult spinal deformity is becoming more common. This can be associated with increased morbidity. Results from multicentre studies of deformity surgery correction confirm complication rates as high as 40 percent. Most often a bad result is associated with inadequate restoration of the sagittal balance. Posterior vertebral body resection has been described as a method to correct significant deformity, but this is a complicated procedure. It is possible to do this in the thoracic spine where nerve roots can be sacrificed, but it is difficult in the lumbar spine due to the significant role of the lumbar nerve roots...
September 2016: J Spine Surg
Peter V Glovinski, Mikkel Herly, Felix C Müller, Jens J Elberg, Stig-Frederik T Kølle, Anne Fischer-Nielsen, Carsten Thomsen, Krzysztof T Drzewiecki
Several techniques for measuring breast volume (BV) are based on examining the breast on magnetic resonance imaging. However, when techniques designed to measure total BV are used to quantify BV changes, for example, after fat grafting, a systematic error is introduced because BV changes lead to contour alterations of the breast. The volume of the altered breast includes not only the injected volume but also tissue previously surrounding the breast. Therefore, the quantitative difference in BV before and after augmentation will differ from the injected volume...
September 2016: Plastic and Reconstructive Surgery. Global Open
Jonathan Zelken, Jung-Ju Huang, Chih-Wei Wu, Yi-Ling Lin, Ming-Huei Cheng
The periareolar approach is limited by areolar diameter. Asian women typically have smaller areolae than Western women. Voluminous and form-stable silicone implants demand larger incisions. Zigzag transareolar approaches closely approximate the nipple and improve exposure, but scar appearance remains problematic, and there is a risk of ductal injury and capsular contracture. We prefer a zigzag incision that straddles the areolar border. Between 2013 and 2015, 11 augmentation mammoplasties (20 incisions) were performed through a transareolar-periareolar (TAPA) incision...
September 2016: Plastic and Reconstructive Surgery. Global Open
Herman Vercruysse, Luc Van Nassauw, Joan San Miguel-Moragas, Eva Lakiere, Sten Stevens, Geert Van Hemelen, Mirco Raffaini, Nasser Nadjmi
INTRODUCTION: Postoperative flattening of the upper lip with loss of lip pout and down turning of the corners of the mouth is often seen after Le Fort I surgery. We aim to determine which facial muscles are involved in this phenomenon to update the literature on this subject. METHODS: In 6 cadavers, a unilateral Le Fort I incision was executed. After removal of the skin, all individual facial muscles were identified and submitted to bilateral tactile traction, comparing incised sides with non-incised sides...
September 22, 2016: Journal of Cranio-maxillo-facial Surgery
Wei Yu, Wei Hu, Yongjie Shui, Xiaoyang Zhu, Chao Li, Xiaoqiu Ren, Xueli Bai, Risheng Yu, Li Shen, Tingbo Liang, Lei Zheng, Qichun Wei
OBJECTIVES: To explore the areas at highest risk for postoperative pancreatic cancer local recurrence according to the spatial location of local failures, with the aim to provide a precise target volume for pancreatic cancer adjuvant radiotherapy. METHODS: Patients with pancreatic cancer who had undergone surgery for the primary tumor in pancreas at our institution from January 2010 to August 2015 were retrospectively analyzed. All local recurrences were plotted on the computed tomography (CT) image of a representative patient according to their relative coordinates to superior mesenteric artery (SMA) or celiac axis (CA)...
October 19, 2016: Radiation Oncology
Tae Suk Oh, Woo Shik Jeong, Taik Jin Chang, Kyung S Koh, Jong Woo Choi
BACKGROUND: It is difficult to restore original orbital contours because of their complex 3-dimensional structure. Moreover, slight implant malpositioning can result in enophthalmos or other complications. The authors describe our experience of using individualized prebent titanium-Medpor mesh implants and stereolithographic modeling in a series of patients who underwent orbital wall reconstruction. METHODS: A consecutive series of 104 patients with orbital fractures received computer simulation-designed prebent titanium-Medpor mesh implants insertion...
October 14, 2016: Journal of Craniofacial Surgery
Man Koon Suh, Kyo Ho Lee, Aram Harijan, Hyung-Gu Kim, Euicheol C Jeong
BACKGROUND: Alloplastic materials are a mainstay in Asian rhinoplasty. However, the outline of alloplastic implants can become conspicuous over time in rhinoplasty patients, which is a significant cause for revision. In revision rhinoplasty, alloplastic materials can remain a viable and affordable option in Asian patients. The acellular dermal matrices (ADM) are often used to interface between the silicone material and the skin envelope. This study assesses histologic changes following implantation of ADM-covered silicone material in rats...
October 14, 2016: Journal of Craniofacial Surgery
Paolo Ghensi, Alessandro Cucchi, Luca Creminelli, Cristiano Tomasi, Barbara Zavan, Carlo Maiorana
INTRODUCTION: The purpose of this prospective randomized controlled clinical trial was to evaluate the effect of oral administration of bromelain on discomfort after mandibular third molar surgery. MATERIALS AND METHODS: Eighty-four consecutive patients requiring surgical removal of a single mandibular impacted third molar under local anesthesia were randomly assigned to receiving no drug (control group, Group A), postoperative 40 mg bromelain every 6 hours for 6 days (Group B), preoperative 4 mg dexamethasone sodium phosphate as a submucosal injection (Group C), and preoperative 4 mg dexamethasone sodium phosphate as a submucosal injection plus postoperative 40 mg bromelain every 6 hours for 6 days (Group D)...
October 14, 2016: Journal of Craniofacial Surgery
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