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https://www.readbyqxmd.com/read/28551914/-notes-assisted-endolumenal-rectal-resection-and-specimen-extraction-without-rectal-stump-opening-our-experience-with-this-novel-technique-in-a-porcine-model
#1
Anton Kvasha, Eyal Rosenthal, Muhammad Khalifa, Igor Waksman
INTRODUCTION: Laparoscopic surgery has long been used for colon and rectal resection, and the laparoscopic-assisted approach has prevailed in surgical practice. While this technique includes the fashioning of an intra-corporeal anastomosis, it still requires an abdominal incision for specimen extraction. Elimination of the abdominal incision and its potential complications has been the motivation for the development of natural orifice specimen extraction (NOSE) techniques. Many of these techniques make use of an open rectal stump, which poses as a potential for intra-abdominal contamination...
May 2017: Harefuah
https://www.readbyqxmd.com/read/28551599/a-rare-cause-of-acute-dysphagia-acute-calcific-tendonitis-of-the-longus-colli-muscle
#2
Hanadi Abou Dargham, Faton Bytyci, Christian Shuman, Anton Stolear
We are presenting a case of a 78-year-old female with multiple comorbidities and history of neck surgery, who presented with acute dysphagia, odynophagia and neck pain that has been progressively getting worse over the course of 2 days, with no recent injury or infection. The patient was afebrile. There were no visible signs of infection on routine oropharyngeal examination. Initial workup was unremarkable except for elevated erythrocyte sedimentation rate, C-reactive protein and creatinine. CT of the cervical spine ruled out any fracture or cervical spine injury but showed an area of calcification, prevertebral oedema and fluid collection inferior to the anterior arch of C1...
May 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28551575/electrokinetic-energy-conversion-efficiency-of-viscoelastic-fluids-in-a-polyelectrolyte-grafted-nanochannel
#3
Yongjun Jian, Fengqin Li, Yongbo Liu, Long Chang, Quansheng Liu, Liangui Yang
In order to conduct extensive investigation of energy harvesting capabilities of nanofluidic devices, we provide analytical solutions for streaming potential and electrokinetic energy conversion (EKEC) efficiency through taking the combined consequences of soft nanochannel, a rigid nanochannel whose surface is covered by charged polyelectrolyte layer, and viscoelastic rheology into account. The viscoelasticity of the fluid is considered by employing the Maxwell constitutive model when the forcing frequency of an oscillatory driving pressure flow matches with the inverse of the relaxation time scale of a typical viscoelastic fluid...
May 17, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28551570/the-wettability-and-swelling-of-selected-mucoadhesive-polymers-in-simulated-saliva-and-vaginal-fluids
#4
M Rojewska, M Olejniczak-Rabinek, A Bartkowiak, A Snela, K Prochaska, J Lulek
The surface properties play a particularly important role in the mucoadhesive drug delivery systems. In these formulations, the adsorption of polymer matrix to mucous membrane is limited by the wetting and swelling process of the polymer structure. Hence, the performance of mucoadhesive drug delivery systems made of polymeric materials depends on multiple factors, such as contact angle, surface free energy and water absorption rate. The aim of our study was to analyze the effect of model saliva and vaginal fluids on the wetting properties of selected mucoadhesive (Carbopol 974P NF, Noveon AA-1, HEC) and film-forming (Kollidon VA 64) polymers as well as their blends at the weight ratio 1:1 and 1:1:1, prepared in the form of discs...
May 15, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28551497/reuse-of-spent-fcc-catalyst-waste-serpentine-and-kiln-rollers-waste-for-synthesis-of-cordierite-and-cordierite-mullite-ceramics
#5
A Ramezani, S M Emami, S Nemat
Spent fluid catalytic cracking (FCC) was gathered from several petrochemical plants and calcined in a rotary furnace between 1000 and 1100°C in order to remove sulphur and hydrocarbon based impurities. Calcining process on FCC led to formation of AlVO4 ceramic phase, so converted the hazardous waste to non-hazardous applicable raw material. In this study, two ceramic bodies as cordierite and cordierite-mullite were synthesized with calcined spent FCC, waste serpentine, kiln rollers waste and high grade kaolin as raw materials...
May 17, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28551494/isoimperatorin-attenuates-airway-inflammation-and-mucus-hypersecretion-in-an-ovalbumin-induced-murine-model-of-asthma
#6
Charith U B Wijerathne, Chang-Seob Seo, Ji-Won Song, Hee-Seon Park, Og-Sung Moon, Young-Suk Won, Hyo-Jung Kwon, Hwa-Young Son
Isoimperatorin (IMP), an active natural furocoumarin, has numerous pharmacologic effects, including anti-inflammatory, analgesic, antispasmodic, and anticancer activities. This study aimed to evaluate the preventive activity of IMP in an ovalbumin (OVA)-induced murine model of asthma and to investigate its possible molecular mechanisms. Female BALB/c mice were sensitized on days 0 and 14 via intraperitoneal injection of 20μg OVA. On days 21-23 after the initial sensitization, the mice received an airway challenge with OVA (1% w/v in PBS) for 1h; meanwhile, IMP (10 or 30mg/kg once daily) was administered by gavage on days 18-23...
May 25, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28551421/interaction-of-gliding-motion-of-bacteria-with-rheological-properties-of-the-slime
#7
Z Asghar, N Ali, M Sajid
Bacteria which do not have organelles of motility, such as flagella, adopt gliding as a mode of locomotion. In gliding motility bacterium moves under its own power by secreting a layer of slime on the substrate. The exact mechanism by which a glider achieves motility is yet in controversy but there are evidences which support the wave-like undulation on the surface of the organism, as a possible mechanism of motility. Based on this observation, a model of undulating sheet over a layer of slime is examined as a possible model of the gliding motion of a bacterium...
May 24, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28551193/drivers-of-choice-for-fluid-milk-versus-plant-based-alternatives-what-are-consumer-perceptions-of-fluid-milk
#8
K S McCarthy, M Parker, A Ameerally, S L Drake, M A Drake
Fluid milk consumption has declined for decades while consumption of nondairy alternatives has increased. A better understanding of why consumers purchase fluid milk or nondairy alternatives is needed to assist increased sales of milk or maintain sales without further decline. The objective of this study was to determine the extrinsic attributes that drive purchase within each product category. The second objective was to determine the personal values behind the purchase of each beverage type to give further understanding why particular attributes are important...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28551182/identification-and-functional-analysis-of-bull-bos-taurus-cauda-epididymal-fluid-proteome
#9
B Westfalewicz, M A Dietrich, A Mostek, A Partyka, W Bielas, W Niżański, A Ciereszko
Despite recent advances in bull epididymal fluid proteome research, significant numbers of proteins secreted to epididymal lumen remain unidentified. The objective of this study was to expand the number of identified cauda epididymal fluid proteins in bulls and to contextualize them in a broader view of their mutual interactions and involvement in biological processes and pathways, to fully elucidate the ways in which epididymal fluid proteins are involved in storage and maturation of spermatozoa in epididymis...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28551167/brolucizumab-versus-aflibercept-in-participants-with-neovascular-age-related-macular-degeneration-a-randomized-trial
#10
Pravin U Dugel, Glenn J Jaffe, Peter Sallstig, James Warburton, Andreas Weichselberger, Mark Wieland, Lawrence Singerman
PURPOSE: To compare the efficacy and safety of brolucizumab with aflibercept to treat neovascular age-related macular degeneration (AMD). DESIGN: Prospective, randomized, double-masked, multicenter, 2-arm, phase 2 study. PARTICIPANTS: Eighty-nine treatment-naïve participants, aged ≥50 years, with active choroidal neovascularization secondary to AMD. METHODS: Eligible participants were randomized 1:1 to intravitreal brolucizumab (6 mg/50 μl) or aflibercept (2 mg/50 μl)...
May 24, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28551155/coupling-of-supercritical-fluid-chromatography-to-mass-spectrometry-for-the-analysis-of-dechlorane-plus-examination-of-relevant-negative-ion-atmospheric-pressure-chemical-ionization-mechanisms
#11
Nicole Riddell, Bert van Bavel, Ingrid Ericson Jogsten, Robert McCrindle, Alan McAlees, Brock Chittim
During an investigation of the potential associated with coupling packed column supercritical fluid chromatography (pSFC) to mass spectrometry for the analysis of Dechlorane Plus and related compounds, it was found that negative ion atmospheric pressure chemical ionization (APCI) was a promising ionization technique. In the course of maximizing the responses associated with the target analytes, it proved useful to examine some aspects of the complex nature and reactivity of the corona discharge plasma generated to explain the observed ionization products...
August 15, 2017: Talanta
https://www.readbyqxmd.com/read/28551031/non-esterified-fatty-acids-in-early-luteal-bovine-oviduct-fluid-mirror-plasma-concentrations-an-ex-vivo-approach
#12
Lies Jordaens, Veerle Van Hoeck, Jessie De Bie, Mario Berth, Waleed F A Marei, Karolien L J Desmet, Peter E J Bols, Jo L M R Leroy
We investigated whether and to which extent plasma non-esterified fatty acids (NEFAs) are reflected in oviduct fluid (OF) using an improved ex vivo flushing method. OF and plasma NEFA concentrations were respectively 0.29±0.19 and 0.31±0.14mmol/L, they didn't differ significantly (P=0.13) and tended to be positively correlated (Pearson correlation coefficient=0.56; P=0.07). Results suggest that OF NEFAs mirror the concentrations seen in plasma of healthy cattle.
May 24, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28550986/acute-deep-infections-of-the-upper-extremity-the-utility-of-obtaining-atypical-cultures-in-the-presence-of%C3%A2-purulence
#13
Nikolas H Kazmers, George W Fryhofer, Daniel Gittings, David J Bozentka, David R Steinberg, Benjamin L Gray
PURPOSE: In the setting of acute deep upper extremity infections, evidence is lacking to guide the decision whether to send atypical cultures (fungal and acid-fast-bacillus [AFB]) during surgical debridement, especially in the presence of purulent fluid that is commonly observed with typical bacterial infections. Our purpose was to determine the frequency of positive atypical cultures and the frequency with which they alter treatment, and identify factors associated with positive atypical cultures...
May 25, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28550903/hemodynamic-effects-of-the-abdominal-aortic-and-junctional-tourniquet-in-a-hemorrhagic-swine-model
#14
Jason M Rall, James D Ross, Michael S Clemens, Jennifer M Cox, Theresea A Buckley, Jonathan J Morrison
BACKGROUND: Torso hemorrhage constitutes a leading cause of battlefield mortality. The Abdominal Aortic and Junctional Tourniquet (AAJT) uses a pneumatic bladder to compress the aorta reducing pelvic and lower extremity perfusion; however, concern exists over the risk of caval compression exacerbating hypotension after application. METHODS: Male swine (70-90 kg) were randomized into four groups of 10: presence or absence of hemorrhage and AAJT placement. After a 40% hemorrhage, a 15-min period of hypovolemia was observed before the AAJT application...
May 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28550659/hyperoxia-provokes-a-time-and-dose-dependent-inflammatory-response-in-mechanically-ventilated-mice-irrespective-of-tidal-volumes
#15
Hendrik J F Helmerhorst, Laura R A Schouten, Gerry T M Wagenaar, Nicole P Juffermans, Joris J T H Roelofs, Marcus J Schultz, Evert de Jonge, David J van Westerloo
BACKGROUND: Mechanical ventilation and hyperoxia have the potential to independently promote lung injury and inflammation. Our purpose was to study both time- and dose-dependent effects of supplemental oxygen in an experimental model of mechanically ventilated mice. METHODS: Healthy male C57Bl/6J mice, aged 9-10 weeks, were intraperitoneally anesthetized and randomly assigned to the mechanically ventilated group or the control group. In total, 100 mice were tracheotomized and mechanically ventilated for either 8 or 12 h after allocation to different settings for the applied fractions of inspired oxygen (FiO2, 30, 50, or 90%) and tidal volumes (7...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28550649/improved-formula-see-text-determination-in-23-na-35-cl-and-17-o-mri-using-iterative-partial-volume-correction-based-on-1-h-mri-segmentation
#16
Sebastian C Niesporek, Reiner Umathum, Thomas M Fiedler, Peter Bachert, Mark E Ladd, Armin M Nagel
OBJECTIVE: Functional parameters can be measured with the help of quantitative non-proton MRI where exact relaxometry parameters are needed. Investigation of [Formula: see text] is often biased by strong partial volume (PV) effects. Hence, in this work a PV correction algorithm approach was evaluated that uses iteratively adapted [Formula: see text]-values and high-resolution structural (1)H data to determine transverse relaxation in non-proton MRI more accurately. MATERIALS AND METHODS: Simulations, a phantom study and in vivo (23)Na, (17)O and (35)Cl MRI measurements of five healthy volunteers were performed to evaluate the algorithm...
May 26, 2017: Magma
https://www.readbyqxmd.com/read/28550609/validation-of-the-taps-1-a-four-item-screening-tool-to-identify-unhealthy-substance-use-in-primary-care
#17
Jan Gryczynski, Jennifer McNeely, Li-Tzy Wu, Geetha A Subramaniam, Dace S Svikis, Lauretta A Cathers, Gaurav Sharma, Jacqueline King, Eve Jelstrom, Courtney D Nordeck, Anjalee Sharma, Shannon G Mitchell, Kevin E O'Grady, Robert P Schwartz
BACKGROUND: The Tobacco, Alcohol, Prescription Medication, and Other Substance use (TAPS) tool is a combined two-part screening and brief assessment developed for adult primary care patients. The tool's first-stage screening component (TAPS-1) consists of four items asking about past 12-month use for four substance categories, with response options of never, less than monthly, monthly, weekly, and daily or almost daily. OBJECTIVE: To validate the TAPS-1 in primary care patients...
May 26, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/28550604/microencapsulation-of-%C3%AE-carotene-based-on-casein-guar-gum-blend-using-zeta-potential-yield-stress-phenomenon-an-approach-to-enhance-photo-stability-and-retention-of-functionality
#18
Deepika Thakur, Ashay Jain, Gargi Ghoshal, U S Shivhare, O P Katare
β-Carotene, abundant majorly in carrot, pink guava yams, spinach, kale, sweet potato, and palm oil, is an important nutrient for human health due to its scavenging action upon reactive free radicals wherever produced in the body. Inclusion of liposoluble β-carotene in foods and food ingredients is a challenging aspect due to its labile nature and low absorption from natural sources. This fact has led to the application of encapsulation of β-carotene to improve stability and bioavailability. The present work was aimed to fabricate microcapsules (MCs) of β-carotene oily dispersion using the complex coacervation technique with casein (CA) and guar gum (GG) blend...
May 26, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28550603/development-of-novel-high-density-gastroretentive-multiparticulate-pulsatile-tablet-of-clopidogrel-bisulfate-using-quality-by-design-approach
#19
Nilesh Desai, Ravindra Purohit
Myocardial infarction, i.e., heart attack, is a fatal condition which is on the increase all over the world. It is reported that a large number of heart attack occur in morning hours which are attributable to platelet aggregation. Chronotherapy at this stage can be crucial. Clopidogrel bisulfate (CLB) is an antiplatelet agent and has become a drug of choice for prevention of heart attack. It is soluble in acidic pH and has a narrow absorption window. So, its long residence time in stomach is desirable. Therefore, a novel high density tablet was developed comprising multiparticulate pellets with pulsatile release necessary to maintain chronotherapy of heart attack...
May 26, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28550502/decellularization-methods-for-scaffold-fabrication
#20
Sweta K Gupta, Narayan C Mishra
Decellularization is the process of removal of native cells from tissue, leaving behind a three-dimensional (3D) ultrastructure of extracellular matrix (ECM) proteins while preserving the bioactivity and mechanics of the tissue. It offers a unique top-down approach for fabricating ECM based natural scaffold for tissue engineering application. Herein, this chapter presents the fabrication of decellularized scaffold employing different methods: whole organ perfusion, immersion and agitation, pressure gradient, and supercritical fluid...
May 27, 2017: Methods in Molecular Biology
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