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https://www.readbyqxmd.com/read/29151004/differentiation-of-wood-derived-vanillin-from-synthetic-vanillin-in-distillates-using-gc-c-irms-for-%C3%AE-13-c-analysis
#1
Katryna A van Leeuwen, Paul D Prenzler, Danielle Ryan, Mauro Paolini, Federica Camin
RATIONALE: Typical storage in oak barrels release in distillates different degradation products such as vanillin, which play an important role in their flavour and aroma. The addition of vanillin, as well as other aroma compounds, of different origin is prohibited by European laws. As vanillin samples from different sources have different δ(13) C values, the δ(13) C value could be used to determine whether the vanillin is authentic (lignin-derived), or if it has been added from another source (e...
November 18, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29151002/management-of-arrhythmia-in-sepsis-and-septic-shock
#2
Martin Balik, Vojtech Matousek, Michal Maly, Tomas Brozek
The occurrence of supraventricular arrhythmias is associated with an unfavourable prognosis in septic shock. Available trials are difficult to apply in sepsis and septic shock patients due to included cohorts, control groups and because "one size does not fit all". The priorities in the critically ill are maintenance of a sinus rhythm and diastolic ventricular filling. The rate control modality should be reserved for chronic AF and in situations when a sinus rhythm is difficult to maintain due to extreme stress conditions resulting from a high dosage of vasoactive agents...
November 18, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29150992/accelerated-aging-and-aging-process-in-the-brain
#3
Nickolay K Isaev, Elisaveta E Genrikhs, Maria V Oborina, Elena V Stelmashook
One of the approaches to the research of the problem of aging is the study of genetic pathologies leading to accelerated aging, such as the Hutchinson-Gilford progeria syndrome, Werner syndrome, and Down syndrome. Probably, this approach can be used in an attempt to understand the neuronal mechanisms underlying normal and pathological brain aging. The analysis of the current state of scientific knowledge about these pathologies shows that in the Hutchinson-Gilford progeria and Werner syndrome, the rate of brain aging is significantly lower than the rate of whole body aging, whereas in Down syndrome, the brain ages faster than other organs due to amyloid-beta accumulation and chronic oxidative stress in the brain tissue...
November 18, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/29150991/population-based-differences-in-immune-system-response-contribute-to-an-increased-risk-of-schizophrenia-in-african-migrants
#4
Milica J Nesic, Nadja P Maric
Among the highest incidences of schizophrenia is the one documented in second-generation migrants of African descent in the Western countries. Interestingly, people of African and European ancestry demonstrate significant genetic-based differences in immune system regulation and response. As a result, the pro-inflammatory phenotype is more pronounced in people of African descent than it is in Europeans. At the same time, the role of the immune system in the etiology of schizophrenia is gaining increased recognition...
November 18, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/29150985/general-illness-and-psychological-factors-in-patients-with-chronic-nasal-symptoms
#5
Naveed Kara, Alexander C Yao, Julia Newton, Vincent Deary, James O'Hara, Janet A Wilson
OBJECTIVES: Only a minority of patients referred to specialists with sinonasal symptoms have clear evidence of chronic rhinosinusitis. This study aims to estimate the prevalence of and associations between (i) general illness factors (fatigue, autonomic dysfunction) and (ii) psychological factors (anxiety, depression, somatisation, personality traits) in patients presenting with sinonasal symptoms. DESIGN: The following validated questionnaires were administered to patients: the Sino-Nasal Outcome Test-22 (SNOT-22) to identify symptom burden, Composite Autonomic Symptom Score-31 (COMPASS-31) measuring autonomic function, Chalder fatigue questionnaire, Patient Health Questionnaire-15 (PHQ-15) addressing somatisation symptoms, Hospital Anxiety and Depression Scale (HADS), and the International Personality Item Pool-50 (IPIP-50)...
November 18, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29150983/ontogeny-of-the-post-cranial-axial-skeleton-of-melanosuchus-niger-crocodylia-alligatoridae
#6
Lucélia Gonçalves Vieira, Fabiano Campos Lima, Sônia Helena Santesso Teixeira de Mendonça, Lorena Tannús Menezes Dos Reis, Líria Queiroz Luz Hirano, André Luiz Quagliatto Santos
This study proposes the description of the development of the post-cranial axial skeleton, including vertebrae, gastralium, ribs, sternum and interclavicle, in Melanosuchus niger. Six nests were marked and two eggs removed from each nest at 24-hour intervals until hatching. For post-hatching evaluation, 30 hatchlings were kept in captivity and one exemplar was euthanized at three-day intervals. Samples were diaphanized using potassium hydroxide (KOH), alizarin red S and Alcian blue. A routinely generally used method was applied for histological evaluation...
November 18, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29150977/the-cellular-composition-and-glia-neuron-ratio-in-the-spinal-cord-of-a-human-and-a-non-human-primate-comparison-with-other-species-and-brain-regions
#7
Jami Bahney, Christopher S von Bartheld
The cellular composition of brains shows largely conserved, gradual evolutionary trends between species. In the primate spinal cord, however, the glia-neuron ratio was reported to be greatly increased over that in the rodent spinal cord. Here, we re-examined the cellular composition of the spinal cord of one human and one non-human primate species by employing two different counting methods, the isotropic fractionator and stereology. We also determined whether segmental differences in cellular composition, possibly reflecting increased fine motor control of the upper extremities, may explain a sharply increased glia-neuron ratio in primates...
November 18, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29150972/patient-level-factors-and-the-quality-of-care-delivered-in-pediatric-emergency-departments
#8
James P Marcin, Patrick S Romano, Parul Dayal, Madan Dharmar, James M Chamberlain, Nanette Dudley, Charles G Macias, Lise E Nigrovic, Elizabeth C Powell, Alexander J Rogers, Meridith Sonnett, Leah Tzimenatos, Elizabeth R Alpern, Rebecca Andrews-Dickert, Dominic A Borgialli, Erika Sidney, T Charles Casper, J Michael Dean, Nathan Kuppermann
OBJECTIVE: Quality of care delivered to adult patients in the emergency department (ED) is often associated with demographic and clinical factors such as a patient's race/ethnicity and insurance status. We sought to determine whether the quality of care delivered to children in the ED was associated with a variety of patient-level factors. METHODS: This was a retrospective, observational cohort study. Pediatric patients (<18 years) who received care between January 2011 and December 2011 at one of twelve EDs participating in the Pediatric Emergency Care Applied Research Network (PECARN) were included...
November 18, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29150969/non-operative-treatment-as-a-strategy-for-patients-with-parastomal-hernia-a-multicentre-retrospective-cohort-study
#9
L F Kroese, D P V Lambrichts, J Jeekel, G J Kleinrensink, A G Menon, E J R de Graaf, W A Bemelman, J F Lange
AIM: Parastomal hernia is the most common complication following stoma construction. Surgical treatment is usually chosen over non-operative treatment, but a clear rationale for the choice of management is often lacking. This study aims to investigate the reasons for non-operative treatment, cross-over rates, and postoperative complications. METHOD: A multicentre, retrospective cohort study was conducted. Patients diagnosed with a parastomal hernia between January 2007 and December 2012 were included...
November 18, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/29150968/effects-of-blue-light-on-inflammation-and-skin-barrier-recovery-following-acute-perturbation-pilot-study-results-in-healthy-human-subjects
#10
Denise Falcone, Natallia E Uzunbajakava, Frank van Abeelen, Gerrit Oversluizen, Malou Peppelman, Piet E J van Erp, Peter C M van de Kerkhof
BACKGROUND/PURPOSE: While growing evidence supports the therapeutic effect of 453 nm blue light in chronic inflammatory skin diseases, data on its effects on acutely-perturbed human skin are scarce. In this study we investigated the impact of 453 nm narrow-band LED light on healthy skin following acute perturbation. METHODS: Tape stripping and histamine iontophoresis were performed on the forearm of 22 healthy volunteers on two consecutive weeks. In one week, challenges were followed by irradiation for 30 minutes...
November 18, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/29150964/de-novo-donor-specific-hla-antibodies-after-combined-intestinal-and-vascularised-composite-allotransplantation
#11
Annemarie Weissenbacher, Georgios Vrakas, Mian Chen, Srikanth Reddy, Philip Allan, Henk Giele, Martin Cnm Barnardo, Anil Vaidya, Peter J Friend, Susan V Fuggle
Combining vascularised composite allotransplantation (VCA) with intestinal transplantation to achieve primary abdominal closure has become a feasible procedure. Besides facilitating closure, the abdominal wall can be used to monitor intestinal rejection. As the inclusion of a VCA raises the possibility of an enhanced alloimmune response, we investigated the incidence and clinical effect of de novo donor specific HLA antibodies (dnDSA) in a cohort of patients receiving an intestinal transplant with or without a VCA...
November 18, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29150962/genotype-and-diet-affect-resistance-survival-and-fecundity-but-not-fecundity-tolerance
#12
Megan A M Kutzer, Joachim Kurtz, Sophie A O Armitage
Insects are exposed to a variety of potential pathogens in their environment, many of which can severely impact fitness and health. Consequently, hosts have evolved resistance and tolerance strategies to suppress or cope with infections. Hosts utilising resistance improve fitness by clearing or reducing pathogen loads and hosts utilising tolerance reduce harmful fitness effects per pathogen load. To understand variation in, and selective pressures on resistance and tolerance we asked to what degree they are shaped by host genetic background, whether plasticity in these responses depends upon dietary environment, and whether there are interactions between these two factors...
November 18, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/29150957/randomized-controlled-clinical-two-center-study-using-xenogeneic-block-grafts-loaded-with-recombinant-human-bone-morphogenetic-protein-2-or-autogenous-bone-blocks-for-lateral-ridge-augmentation
#13
Daniel S Thoma, Michael Payer, Norbert Jakse, Stefan P Bienz, Jürg Hüsler, Patrick R Schmidlin, Ui-Won Jung, Christoph H F Hämmerle, Ronald E Jung
OBJECTIVES: to test whether or not the use of a xenogeneic block loaded with recombinant human bone morphogenetic protein-2 (rhBMP-2) results in different bone quantity and quality compared to an autogenous bone block. MATERIALS AND METHODS: 24 patients with insufficient bone volume for implant placement were randomly assigned to two treatment modalities: a xenogeneic bone block loaded with rhBMP-2 (test) or an autogenous bone block (control). The horizontal ridge width was evaluated prior to augmentation, after augmentation and at 4 months...
November 18, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29150954/physiological-role-of-urothelial-cancer-associated-1-long-noncoding-rna-in-human-skeletogenic-cell-differentiation
#14
Takanori Ishikawa, Takashi Nishida, Mitsuaki Ono, Takeshi Takarada, Nguyen Ha, Shinnosuke Kurihara, Takayuki Furumatsu, Yurika Murase, Masaharu Takigawa, Toshitaka Oohashi, Hiroshi Kamioka, Satoshi Kubota
A vast number of long-noncoding RNAs (lncRNA) are found expressed in human cells, which RNAs have been developed along with human evolution. However, the physiological functions of these lncRNAs remain mostly unknown. In the present study, we for the first time uncovered the fact that one of such lncRNAs plays a significant role in the differentiation of chondrocytes and, possibly, of osteoblasts differentiated from mesenchymal stem cells, which cells eventually construct the human skeleton. The urothelial cancer-associated 1 (UCA1) lncRNA is known to be associated with several human malignancies...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29150953/new-algorithm-for-simulation-of-proteoglycan-loss-and-collagen-degeneration-in-the-knee-joint-data-from-the-osteoarthritis-initiative
#15
Mika E Mononen, Petri Tanska, Hanna Isaksson, Rami K Korhonen
Osteoarthritis is a harmful joint disease but prediction of disease progression is problematic. Currently, there is only one modeling framework which can be applied to predict the progression of knee osteoarthritis but it only considers degenerative changes in the collagen fibril network. Here, we have developed the framework further by considering all of the major tissue changes (proteoglycan content, fluid flow and collagen fibril network) occurring in osteoarthritis. While excessive levels of tissue stresses controlled degeneration of the collagen fibril network, excessive levels of tissue strains controlled the decrease in proteoglycan content and the increase in permeability...
November 18, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29150937/cgmp-production-and-analysis-of-bg505-sosip-664-an-extensively-glycosylated-trimeric-hiv-1-envelope-glycoprotein-vaccine-candidate
#16
Antu K Dey, Albert Cupo, Gabriel Ozorowski, Vaneet K Sharma, Anna-Janina Behrens, Eden P Go, Thomas J Ketas, Anila Yasmeen, Per J Klasse, Eddy Sayeed, Heather Desaire, Max Crispin, Ian A Wilson, Rogier W Sanders, Thomas Hassell, Andrew Ward, John P Moore
We describe the properties of BG505 SOSIP.664 HIV-1 envelope glycoprotein trimers produced under current Good Manufacturing Practice (cGMP) conditions. These proteins are the first of a new generation of native-like trimers that are the basis for many structure-guided immunogen development programs aimed at devising how to induce broadly neutralizing antibodies (bNAbs) to HIV-1 by vaccination. The successful translation of this prototype demonstrates the feasibility of producing similar immunogens on an appropriate scale and of an acceptable quality for Phase I experimental medicine clinical trials...
November 18, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29150928/application-of-high-speed-counter-current-chromatography-and-hplc-to-separate-and-purify-of-three-polyacetylenes-from-platycodon-grandiflorum
#17
Bao Chen, Zhengbo Liu, Yuwei Zhang, Wei Li, Yanjun Sun, Yufang Wang, Yanhua Wang, Yinshi Sun
Three polyacetylenes were isolated and purified from Platycodon grandiflorum A. DC for the first time by high-speed counter-current chromatography using a two-phase solvent system composed of hexane/ethyl acetate/methanol/water (1:31:1:31, v/v/v/v) and high-performance liquid chromatography with an Agilent ZORBAX(®) SB-C18 column (4.6 mm × 150 mm, 5 μm). After separation by high-speed counter-current chromatography and high-performance liquid chromatography, we obtained 3.5 mg of platetyolin A, 4.1 mg of platetyolin B, and 18...
November 18, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29150927/identification-of-proteins-drying-oils-waxes-and-resins-in-the-works-of-art-micro-samples-by-chromatographic-and-mass-spectrometric-techniques
#18
Bartłomiej Witkowski, Anna Duchnowicz, Monika Ganeczko, Agnieszka Laudy, Tomasz Gierczak, Magdalena Biesaga
Simplified method for simultaneous identification of proteins, drying oils, waxes and resins in the works-of-art samples was developed. Liquid chromatography with mass spectrometry and gas chromatography with mass spectrometry were used to identify natural materials most frequently encountered in historical paintings. Protein binders were extracted with ammonia and purified using miniaturized solid-phase microextraction (Omix tips) to efficiently suppress matrix interferences. Zwitterionic stationary phase was used for separation of sixteen underivatized amino acids analysis with hydrophilic interaction liquid chromatography that were subsequently quantified with liquid chromatography with mass spectrometry...
November 18, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29150926/viral-short-orfs-and-their-possible-functions
#19
REVIEW
Yaara Finkel, Noam Stern-Ginossar, Michal Schwartz
Definition of functional genomic elements is one of the greater challenges of the genomic era. Traditionally, putative short Open Reading Frames (sORFs) coding for less than 100 amino acids were disregarded due to computational and experimental limitations, however it has become clear over the past several years that translation of sORFs is pervasive and serves diverse functions. The development of ribosome profiling, allowing identification of translated sequences genome-wide, revealed wide-spread, previously unidentified translation events...
November 18, 2017: Proteomics
https://www.readbyqxmd.com/read/29150925/one-pot-synthesis-of-a-multi-template-molecularly-imprinted-polymer-for-the-extraction-of-six-sulfonamide-residues-from-milk-before-hplc-with-diode-array-detection
#20
Maria Kechagia, Victoria Samanidou, Abuzar Kabir, Kenneth G Furton
A highly selective molecularly imprinted polymer sorbent was synthesized and employed for the simultaneous determination of six sulfonamide antibiotic residues (sulfanilamide, sulfacetamide, sulfadiazine, sulfathiazole, sulfamerazine and sulfamethizole) in milk samples. Multi-analyte imprinted particles were used as sorbent in solid phase extraction. Sulfonamides were separated on a high-performance liquid chromatography column (Merck-Lichrospher RP18e, 5 μm 250 × 4 mm) and further identified and quantified by diode array detection...
November 18, 2017: Journal of Separation Science
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