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https://www.readbyqxmd.com/read/28646736/cell-damage-caused-by-ultraviolet-b-radiation-in-the-desert-cyanobacterium-phormidium-tenue-and-its-recovery-process
#1
Gaohong Wang, Songqiang Deng, Jiafeng Liu, Chaoran Ye, Xiangjun Zhou, Lanzhou Chen
Phormidium tenue, a cyanobacterium that grows in the topsoil of biological soil crusts (BSCs), has the highest recovery rate among desert crust cyanobacteria after exposure to ultraviolet B (UV-B) radiation. However, the mechanism underlying its recovery process is unclear. To address this issue, we measured chlorophyll a fluorescence, generation of reactive oxygen species (ROS), lipid peroxidation, and repair of DNA breakage in P. tenue following exposure to UV-B. We found that UV-B radiation at all doses tested reduced photosynthesis and induced cell damage in P...
June 21, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28646582/comprehensive-mathematical-model-of-oxidative-phosphorylation-valid-for-physiological-up-to-pathological-conditions
#2
Margit Heiske, Thierry Letellier, Edda Klipp
We developed a mathematical model of oxidative phosphorylation (OXPHOS) that allows for a precise description of mitochondrial function with respect to the respiratory flux and the ATP production. The model reproduced flux-force relationships under various experimental conditions (state 3 and 4, uncoupling, shortage of respiratory substrate) as well as time courses, exhibiting correct P/O ratios. The model was able to reproduce experimental threshold curves for perturbations of the respiratory chain complexes, the F1 F0 -ATP synthase, the ADP/ATP carrier, the phosphate/OH carrier, and the proton leak...
June 24, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28645812/transprosthetic-leak-after-biological-aortic-valve-replacement-there-s-a-hole-in-the-valve
#3
EDITORIAL
Oliver J Liakopoulos
No abstract text is available yet for this article.
May 19, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28645586/venous-sinus-stenting-in-the-management-of-patients-with-intracranial-hypertension-manifesting-with-skull-base-cerebrospinal-fluid-leaks
#4
Rajiv R Iyer, David Solomon, Abhay Moghekar, C Rory Goodwin, Charles M Stewart, Masaru Ishii, Philippe Gailloud, Gary L Gallia
BACKGROUND: A subset of patients with skull base cerebrospinal fluid (CSF) leaks are found to have elevated intracranial pressure (ICP). In these patients, elevated ICP is thought to contribute to both the pathophysiology of the leak as well as postoperative leak recurrences. Current strategies for post-operative ICP control include medical therapy and shunting procedures. The aim of this study is to report the use of venous sinus stenting (VSS) in the management of patients with skull base CSF leaks due to elevated ICP...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28644858/the-flame-retardant-de-71-a-mixture-of-polybrominated-diphenyl-ethers-inhibits-human-differentiated-thyroid-cell-function-in-vitro
#5
Thit Mynster Kronborg, Juliana Frohnert Hansen, Åse Krogh Rasmussen, Katrin Vorkamp, Claus Henrik Nielsen, Marie Frederiksen, Jacob Hofman-Bang, Christoffer Holst Hahn, Louise Ramhøj, Ulla Feldt-Rasmussen
BACKGROUND: Normal thyroid function is essential for general growth and metabolism, but can be affected by endocrine disrupting chemicals (EDCs). Polybrominated diphenyl ethers (PBDEs) have been used worldwide to reduce flammability in different materials and are suspected to be EDCs. The production of the commercial Penta- and OctaBDE mixtures is banned, but DecaBDEs and existing products may leak PBDEs into the environment. Our aim was to investigate the effect of the PentaBDE mixture DE-71 on human thyroid cells in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28644545/robotic-versus-laparoscopic-rectal-surgery-in-high-risk-patients
#6
Jamil Ahmed, Han Cao, Sofoklis Panteleimonitis, Jim Khan, Amjad Parvaiz
AIM: Laparoscopic rectal surgery is associated with a steep learning curve and high conversion rate despite progress in equipment design and consistent practice. The robotic system has shown the advantage over laparoscopic approach due to stable three-dimensional views, improved dexterity and better ergonomics. These factors make the robotic approach more favourable for rectal surgery. The aim of this study was to compare the perioperative outcomes of laparoscopic and robotic rectal cancer surgery in high-risk patients...
June 23, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28644544/the-frontal-peak-sign-a-potential-new-indication-of-open-approach-in-frontal-sinus-mucoceles-with-posterior-table-erosion-a-retrospective-chart-review-of-thirty-seven-patients
#7
Emilie Béquignon, Jean-Philippe Blancal, Jean-Pierre Guichard, Katell Ruellan, Romain Kania, Elisabeth Sauvaget, Damien Bresson, Philippe Herman, Benjamin Verillaud
To date, most frontal mucoceles are treated endoscopically, provided that there is no major neo-osteogenesis and that the frontal sinus floor is wide enough to provide an adequate working space: the presence of a sinus wall dehiscence is not considered as a contraindication to an endoscopic approach. We report on a series of 37 patients presenting with frontal sinus mucoceles with posterior table erosion. Thirty-three (89.2%) had minimal erosion and/or a limited protrusion of the mucocele within the anterior cranial fossa on CT-scan, and were successfully operated on through an endoscopic approach...
June 23, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28644375/gaden-a-3d-gas-dispersion-simulator-for-mobile-robot-olfaction-in-realistic-environments
#8
Javier Monroy, Victor Hernandez-Bennets, Han Fan, Achim Lilienthal, Javier Gonzalez-Jimenez
This work presents a simulation framework developed under the widely used Robot Operating System (ROS) to enable the validation of robotics systems and gas sensing algorithms under realistic environments. The framework is rooted in the principles of computational fluid dynamics and filament dispersion theory, modeling wind flow and gas dispersion in 3D real-world scenarios (i.e., accounting for walls, furniture, etc.). Moreover, it integrates the simulation of different environmental sensors, such as metal oxide gas sensors, photo ionization detectors, or anemometers...
June 23, 2017: Sensors
https://www.readbyqxmd.com/read/28644219/an-uncommon-complication-of-laparoscopic-live-donor-nephrectomy
#9
Karen A Beer
Chylous ascites is an uncommon complication of laparoscopic live donor nephrectomy, occurring when milky chyle from the lymphatic system leaks into the peritoneal cavity. This can occur after trauma or be caused by obstruction of the lymphatic system. Treatment may include a fat-free diet, total parenteral nutrition, subcutaneous somatostatin, lymphangiography, and/or surgical closure of the leaking lymph vessel.
July 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28643660/glue-mesh-fixation-feasibility-tolerance-and-complication-assessment-results-24months-after-laparoscopic-sacrocolpopexy
#10
P Panel, F Soffray, E Roussillon, C Devins, M Brouziyne, S Abramowicz
AIM: This study aims to assess short- and mid-term feasibility, strength and tolerance of glue mesh fixation for laparoscopic sacrocolpopexy, as well as postoperative quality of sexual activity. PATIENTS AND METHODS: This original prospective clinical study was carried out in multiple university surgical centres between 2012 and 2013. Data were obtained during immediate postoperative hospitalisation, at 3 and at 24 months postoperatively. For a total of 42 patients subjected to laparoscopic sacrocolpopexy, bladder catheterization and hospitalisation times, pain score, early and late postoperative complications, prolapse staging according to POP-Q classification, and quality of sexual activity were registered...
April 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28643239/serum-histones-as-biomarkers-of-the-severity-of-heatstroke-in-dogs
#11
Yaron Bruchim, Isaac Ginsburg, Gilad Segev, Ahmad Mreisat, Yochai Avital, Itamar Aroch, Michal Horowitz
Heatstroke is associated with systemic inflammatory response syndrome, leading to multiple organ dysfunction and death. Currently, there is no specific treatment decreasing hyperthermia-induced inflammatory/hemostatic derangements. Emerging studies indicate that histones leaking from damaged cells into the extracellular space are toxic, pro-inflammatory, and pro-thrombotic. We therefore hypothesize that serum histones (sHs) are elevated during heatstroke and are associated with the severity of the disease. Sixteen dogs with heatstroke and seven healthy controls were included in the study...
June 22, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28643075/a-standardized-comparison-of-peri-operative-complications-after-minimally-invasive-esophagectomy-ivor-lewis-versus-mckeown
#12
Andrew M Brown, Michael J Pucci, Adam C Berger, Talar Tatarian, Nathaniel R Evans, Ernest L Rosato, Francesco Palazzo
BACKGROUND: While our institutional approach to esophageal resection for cancer has traditionally favored a minimally invasive (MI) 3-hole, McKeown esophagectomy (MIE 3-hole) during the last five years several factors has determined a shift in our practice with an increasing number of minimally invasive Ivor Lewis (MIE IL) resections being performed. We compared peri-operative outcomes of the two procedures, hypothesizing that MIE IL would be less morbid in the peri-operative setting compared to MIE 3-hole...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28642596/sgbs-cells-as-a-model-of-human-adipocyte-browning-a-comprehensive-comparative-study-with-primary-human-white-subcutaneous-adipocytes
#13
Chia Rou Yeo, Madhur Agrawal, Shawn Hoon, Asim Shabbir, Manu Kunaal Shrivastava, Shiqi Huang, Chin Meng Khoo, Vanna Chhay, M Shabeer Yassin, E Shyong Tai, Antonio Vidal-Puig, Sue-Anne Toh
The Simpson Golabi Behmel Syndrome (SGBS) pre-adipocyte cell strain is widely considered to be a representative in vitro model of human white pre-adipocytes. A recent study suggested that SGBS adipocytes exhibit an unexpected transient brown phenotype. Here, we comprehensively examined key differences between SGBS adipocytes and primary human white subcutaneous (PHWSC) adipocytes. RNA-Seq analysis revealed that extracellular matrix (ECM)-receptor interaction and metabolic pathways were the top two KEGG pathways significantly enriched in SGBS adipocytes, which included positively enriched mitochondrial respiration and oxidation pathways...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642181/surgery-outcome-of-growth-hormone-secreting-pituitary-adenoma-with-empty-sella-using-a-new-classification
#14
Qiang Wang, Xiaopeng Guo, Lu Gao, Zihao Wang, Kan Deng, Wei Lian, Renzhi Wang, Huijuan Zhu, Bing Xing
OBJECTIVE: To investigate the outcomes and identified risk factors for a cure and intraoperative cerebrospinal fluid leak following transsphenoidal surgery using a new classification for growth hormone-secreting pituitary adenoma associated with "empty sella". METHODS: This retrospective cohort study included 51 patients enrolled from January 2010 to June 2016. All subjects were categorized into three groups using a new classification scheme: Grade A, whole tumor occupation area beneath a horizontal line drawn along the lowest level of ES; Grade B, tumor occupation area that crossed the horizontal line on one side; and Grade C, tumor occupation area that crossed the horizontal line on two sides...
June 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28640779/nonoperative-management-rather-than-endovascular-repair-may-be-safe-for-grade-ii-blunt-traumatic-aortic-injuries-an-eleven-year-retrospective-analysis
#15
Stephen M Spencer, Karen Safcsak, Chadwick P Smith, Michael L Cheatham, Indermeet S Bhullar
BACKGROUND: The Society of Vascular Surgery (SVS) guidelines currently suggest thoracic endovascular aortic repair (TEVAR) for grade II-IV and non-operative management (NOM) for grade I blunt traumatic aortic injury (BTAI). However, there is increasing evidence that grade II may also be observed safely. The purpose of this study was to compare the outcome of TEVAR and NOM for grade I-IV BTAI and determine if grade II can be safely observed with NOM. METHODS: The records of patients with BTAI from 2004 to 2015 at a Level I trauma center were retrospectively reviewed...
June 20, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28637544/evaluation-of-blood-flow-with-indocyanine-green-guided-imaging-to-determine-optimal-site-for-gastric-conduit-anastomosis-to-prevent-anastomotic-leak-after-esophagectomy
#16
Masaki Ohi, Susumu Saigusa, Yuji Toiyama, Takashi Ichikawa, Tadanobu Shimura, Hiromi Yasuda, Yoshiki Okita, Shigeyuki Yoshiyama, Minako Kobayashi, Toshimitsu Araki, Yasuhiro Inoue, Yasuhiko Mohri, Masato Kusunoki
No abstract text is available yet for this article.
June 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28636829/analysis-of-minimally-invasive-esophagectomy-at-a-single-veterans-affairs-medical-center
#17
Matthew D Skancke, Robert A Grossman, Gustavo Marino, Fredrick J Brody, Gregory D Trachiotis
BACKGROUND: To date, there are no published studies focusing on the benefits of minimally invasive esophagectomy (MIE) versus open esophagectomy at a Veterans Affairs Medical Center (VAMC). Our primary outcome was the incidence of esophageal malignancy in the veteran population and the postoperative morbidity following traditional and MIE for malignancy. DESIGN: Retrospective analysis of the incidence of esophageal malignancy at a Veteran Integrated Service Network (VISN) 5 VAMC reported to the VAMC Esophageal Tumor Registry between 2003 and 2016 and outcomes of the veterans who received esophagectomy for malignancy...
June 21, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28636747/do-different-characteristics-of-two-emasculators-make-the-difference-in-equine-castration
#18
F Comino, G Giusto, V Caramello, M Gandini
BACKGROUND: Serra and Reimer emasculators are frequently used during equine orchiectomy. They differ in their jaw profile and haemostatic mechanism provided. OBJECTIVES: (1) To evaluate whether there is a difference between the haemostatic capacity of Reimer and Serra emasculators in open and closed castration and (2) compare haemostatic capacity of each emasculator in both open and closed castration; (3) to assess whether there is a difference in the tensile strength of the parietal tunic when using a Reimer emasculator or a Serra emasculator in closed castration...
June 21, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28636471/laparoscopic-colectomy-in-a-district-hospital-the-single-surgeon-can-be-safe
#19
A A Aikoye, A Khushal, C Parkin, T Bates
BACKGROUND: Several outcome measures have been identified for colorectal surgery and published in the literature. This study sought to compare outcomes of high volume laparoscopic colectomy by a single surgeon in a district hospital with outcomes from tertiary referral centres. METHODS: This was a retrospective review of elective laparoscopic colectomy by a single laparoscopic general surgeon in a district hospital over a 51-month period using a prospectively maintained database...
February 7, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28634627/influence-of-multiple-stapler-firings-used-for-rectal-division-on-colorectal-anastomotic-leak-rate
#20
Tamara Braunschmid, Nikolaus Hartig, Lukas Baumann, Bernhard Dauser, Friedrich Herbst
BACKGROUND: Anastomotic leakage following colorectal resection remains one of the most significant complications with relevant morbidity and mortality. There is evidence that a higher number of stapler firings for rectal division can affect the leak rate in double stapling anastomosis. However, there are no data concerning compression anastomosis. We present our institutional experience addressing this issue. DESIGN: This is a retrospective review of a prospective institutional database of patients undergoing colonic and rectal resection for benign and malignant indications between January 2008 and December 2014 at the surgical department of the St...
June 20, 2017: Surgical Endoscopy
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