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https://www.readbyqxmd.com/read/28528433/hydrolysis-of-phosphatidylcholine-isoprostanes-ptdcho-ip-by-peripheral-human-group-iia-v-and-x-secretory-phospholipases-a2-spla2
#1
Arnis Kuksis, Waldemar Pruzanski
Biologically active F- and E/D-type-prostane ring isomers (F2-IP and E2/D2-IP, respectively) are produced in situ by non-enzymatic peroxidation of arachidonic acid esterified to GroPCho (PtdCho-IP) and are universally distributed in tissue lipoproteins and cell membranes. Previous work has shown that platelet-activating factor acetylhydrolases (PAF-AH) are the main endogenous PLA2 involved in degradation of PtdCho-IP. The present study shows that the PtdCho-IP are also subject to hydrolysis by group IIA, V and X secretory PLA2, which also have a wide peripheral tissue distribution...
May 20, 2017: Lipids
https://www.readbyqxmd.com/read/28528429/myocardial-edema-in-acute-myocarditis-relationship-of-t2-relaxometry-and-late-enhancement-burden-by-using-dual-contrast-turbo-spin-echo-mri
#2
A Mayr, G Klug, H J Feistritzer, S J Reinstadler, M Reindl, R Esterhammer, G Feuchtner, B Metzler, M F Schocke
To quantify myocardial edema by using a T2 relaxometry approach with a dual-contrast turbo spin-echo (dcTSE) sequence in patients with acute myocarditis regarding focal late gadolinium enhancement (LGE) burden. CMR T2 relaxometry was performed in 39 patients (age 41 ± 19 years; 36% women) with LGE in a typical myocarditis pattern and in ten healthy volunteers (age 46 ± 12; 60% woman). dcTSE sequence (echo time 29 and 75 ms, respectively) was used for T2 mapping, analysis were performed on the basis of region of interest (ROI)...
May 20, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28528397/perioperative-hypothalamic-pituitary-adrenal-function-in-patients-with-silent-corticotroph-adenomas
#3
Abdelle F Cheres, Nadine ElAsmar, Aman Rajpal, Warren R Selman, Baha M Arafah
BACKGROUND: Silent corticotroph adenomas (SCAs) are characterized by strong ACTH immunostaining without clinical manifestations of hypercortisolism. Patients with SCAs often present with mechanical symptoms related to tumor growth. This study investigates the hypothalamic pituitary adrenal axis (HPA) characteristics after adenomectomy in patients with SCAs. METHODS: Biochemical parameters of HPA function were monitored frequently after surgical resection of non-functioning macroadenomas...
May 20, 2017: Pituitary
https://www.readbyqxmd.com/read/28528311/rapid-screening-and-identification-of-chemical-hazards-in-surface-and-drinking-water-using-high-resolution-mass-spectrometry-and-a-case-control-filter
#4
Sarit L Kaserzon, Amy L Heffernan, Kristie Thompson, Jochen F Mueller, Maria Jose Gomez Ramos
Access to clean, safe drinking water poses a serious challenge to regulators, and requires analytical strategies capable of rapid screening and identification of potentially hazardous chemicals, specifically in situations when threats to water quality or security require rapid investigations and potential response. This study describes a fast and efficient chemical hazard screening strategy for characterising trace levels of polar organic contaminants in water matrices, based on liquid chromatography high resolution mass spectrometry with post-acquisition 'case-control' data processing...
May 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28528272/glycosylation-is-important-for-legumain-localization-and-processing-to-active-forms-but-not-for-cystatin-e-m-inhibitory-functions
#5
Ngoc Nguyen Lunde, Mads Haugland Haugen, Kristina Broe Bodin Larsen, Ingrid Damgaard, Solveig J Pettersen, Roya Kasem, Wioletta Rut, Marcin Drag, Marcin Poreba, Harald Thidemann Johansen, Rigmor Solberg
The asparaginyl endopeptidase legumain and its inhibitor cystatin E/M are endogenously glycosylated. However, little is known about the nature of the carbohydrate groups and whether they affect the functions of these proteins. In this study both glycosylated and unglycosylated forms of legumain and cystatin E/M were studied. HEK293 cell lines stably over-expressing legumain or cystatin E/M, and HCT116 cells were used as cell models, and mature legumain was purified from bovine kidneys. To obtain unglycosylated proteins, cells were treated with tunicamycin, an inhibitor of N-linked glycosylation, whereas PNGase F and Endo H were used to characterize the glycosylation types...
May 17, 2017: Biochimie
https://www.readbyqxmd.com/read/28528241/peripheral-zinc-and-neopterin-concentrations-are-associated-with-mood-severity-in-bipolar-disorder-in-a-gender-specific-manner
#6
Caitlin E Millett, Dahlia Mukherjee, Aubrey Reider, Adem Can, Maureen Groer, Dietmar Fuchs, Teodor T Postolache, Shannon L Kelleher, Erika F H Saunders
Bipolar disorder (BD) is a recurrent, episodic mood disorder for which there are no current diagnostic, prognostic or theranostic biomarkers. Two peripheral markers of the acute phase immune response, zinc and neopterin, are consistently associated with severity of depression in literature. Given gender differences in clinical presentation of BD and in inflammatory processes, we aimed to explore the interaction between gender and immune biomarkers to predict mood severity in BD. Participants with DSM IV BD I and II were recruited through the Pennsylvania Psychiatric Institute during an acute mood episode...
May 17, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28528189/long-term-follow-up-after-near-infrared-fluorescence-guided-resection-of-colorectal-liver-metastases-a-retrospective-multicenter-analysis
#7
H J M Handgraaf, L S F Boogerd, D J Höppener, A Peloso, B G Sibinga Mulder, C E S Hoogstins, H H Hartgrink, C J H van de Velde, J S D Mieog, R J Swijnenburg, H Putter, M Maestri, A E Braat, J V Frangioni, A L Vahrmeijer
BACKGROUND: Several studies demonstrated that intraoperative near-infrared fluorescence (NIRF) imaging using indocyanine green (ICG) identifies (sub)capsular colorectal liver metastases (CRLM) missed by other techniques. It is unclear if this results in any survival benefit. This study evaluates long-term follow-up after NIRF-guided resection of CRLM using ICG. METHODS: First, patients undergoing resection of CRLM with or without NIRF imaging were analyzed retrospectively...
May 6, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28528105/vulnerability-of-global-food-production-to-extreme-climatic-events
#8
F Yeni, H Alpas
It is known that the frequency, intensity or duration of the extreme climatic events have been changing substantially. The ultimate goal of this study was to identify current vulnerabilities of global primary food production against extreme climatic events, and to discuss potential entry points for adaptation planning by means of an explorative vulnerability analysis. Outcomes of this analysis were demonstrated as a composite index where 118 country performances in maintaining safety of food production were compared and ranked against climate change...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28528095/structural-and-mechanical-properties-of-organogels-role-of-oil-and-gelator-molecular-structure
#9
Miguel A Cerqueira, Luiz H Fasolin, Carolina S F Picone, Lorenzo M Pastrana, Rosiane L Cunha, António A Vicente
This work aims at evaluating the influence of oil and gelator structure on organogels' properties through rheological measurements, polarized microscopy and small-angle X-ray scattering (SAXS). Four different food-grade gelators (glyceryl tristearate - GT; sorbitan tristearate - ST; sorbitan monostearate - SM and glyceryl monostearate - GM) were tested in medium-chain triglyceride and high oleic sunflower (MCT and LCT, respectively) oil phases. Organogels were prepared by mixing the oil phase and gelator at different concentrations (5, 10, 15, 20 and 25%) at 80°C during 30min...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28527998/molecular-cloning-and-structural-modelling-of-gamma-phospholipase-a2-inhibitors-from-bothrops-atrox-and-micrurus-lemniscatus-snakes
#10
Carina G Picelli, Rafael J Borges, Carlos A H Fernandes, Fabio M Matioli, Carla F C Fernandes, Juliana C Sobrinho, Rudson J Holanda, Luiz S Ozaki, Anderson M Kayano, Leonardo A Calderon, Marcos R M Fontes, Rodrigo G Stábeli, Andreimar M Soares
Phospholipases A2 inhibitors (PLIs) produced by venomous and non-venomous snakes play essential role in this resistance. These endogenous inhibitors may be classified by their fold in PLIα, PLIβ and PLIγ. Phospholipases A2 (PLA2s) develop myonecrosis in snake envenomation, a consequence that is not efficiently neutralized by antivenom treatment. This work aimed to identify and characterize two PLIs from Amazonian snake species, Bothrops atrox and Micrurus lemniscatus. Liver tissues RNA of specimens from each species were isolated and amplified by RT-PCR using PCR primers based on known PLIγ gene sequences, followed by cloning and sequencing of amplified fragments...
May 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28527966/suture-dehiscence-in-the-tricuspid-annulus-an-ex%C3%A2-vivo-analysis-of-tissue-strength-and-composition
#11
Deborah M Paul, Ajay Naran, Eric L Pierce, Charles H Bloodworth, Steven F Bolling, Ajit P Yoganathan
BACKGROUND: Surgical repair of functional tricuspid regurgitation (FTR) is an increasingly common practice, but annuloplasty suture dehiscence remains a significant problem. Quantitative and mechanistic understanding of annular suture holding strength can support more effective techniques for tricuspid valve device anchoring. METHODS: Suture holding strength of ovine tricuspid annuli (n = 15) was quantified ex vivo by pullout testing at 12 positions around their circumference...
May 17, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28527949/microproteome-of-dentoalveolar-tissues
#12
Cristiane R Salmon, Ana Paula O Giorgetti, Adriana F Paes Leme, Romênia R Domingues, Tamara N Kolli, Brian L Foster, Francisco H Nociti
Proteomic analysis of extracellular matrices (ECM) of dentoalveolar tissues can provide insights into developmental, pathological, and reparative processes. However, targeted dissection of mineralized tissues, dental cementum (DC), alveolar bone (AB), and dentin (DE), presents technical difficulties. We demonstrate an approach combining EDTA decalcification and laser capture microdissection (LCM), followed by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS), to analyze proteome profiles of these tissues...
May 17, 2017: Bone
https://www.readbyqxmd.com/read/28527809/accuracy-of-genomic-predictions-in-gyr-bos-indicus-dairy-cattle
#13
S A Boison, A T H Utsunomiya, D J A Santos, H H R Neves, R Carvalheiro, G Mészáros, Y T Utsunomiya, A S do Carmo, R S Verneque, M A Machado, J C C Panetto, J F Garcia, J Sölkner, M V G B da Silva
Genomic selection may accelerate genetic progress in breeding programs of indicine breeds when compared with traditional selection methods. We present results of genomic predictions in Gyr (Bos indicus) dairy cattle of Brazil for milk yield (MY), fat yield (FY), protein yield (PY), and age at first calving using information from bulls and cows. Four different single nucleotide polymorphism (SNP) chips were studied. Additionally, the effect of the use of imputed data on genomic prediction accuracy was studied...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527802/abrupt-weaning-reduces-postweaning-growth-and-is-associated-with-alterations-in-gastrointestinal-markers-of-development-in-dairy-calves-fed-an-elevated-plane-of-nutrition-during-the-preweaning-period
#14
M A Steele, J H Doelman, L N Leal, F Soberon, M Carson, J A Metcalf
The benefits of feeding elevated quantities of milk to dairy calves have been well established. However, there is a reluctance to adopt this method of feeding in commercial dairy production because of concerns around growth, health, and ruminal development during weaning. The objective of this study was to characterize the effect of an abrupt (0 d step-down) or gradual (12 d step-down) feeding scheme when calves are fed an elevated plane of nutrition (offered 1.35 kg of milk replacer/d). For this experiment, a total of 54 calves were randomly assigned to an abrupt or a gradual weaning protocol before weaning at 48 d of life...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527796/genetic-parameters-of-mid-infrared-methane-predictions-and-their-relationships-with-milk-production-traits-in-holstein-cattle
#15
P B Kandel, M-L Vanrobays, A Vanlierde, F Dehareng, E Froidmont, N Gengler, H Soyeurt
Many countries have pledged to reduce greenhouse gases. In this context, the dairy sector is one of the identified sectors to adapt production circumstances to address socio-environmental constraints due to its large carbon footprint related to CH4 emission. This study aimed mainly to estimate (1) the genetic parameters of 2 milk mid-infrared-based CH4 proxies [predicted daily CH4 emission (PME, g/d), and log-transformed predicted CH4 intensity (LMI)] and (2) their genetic correlations with milk production traits [milk (MY), fat (FY), and protein (PY) yields] from first- and second-parity Holstein cows...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527703/sperm-oocyte-contact-induces-outside-in-signaling-via-pyk2-activation
#16
Huizhen Wang, Jinping Luo, Carol Carlton, Lynda K McGinnis, William H Kinsey
Fertilization is a multi-step process that begins with plasma membrane interactions that enable sperm - oocyte binding followed by fusion of the sperm and oocyte plasma membranes. Once membrane fusion has occurred, sperm incorporation involves actin remodeling events within the oocyte cortex that allow the sperm head to penetrate the cortical actin layer and gain access to the ooplasm. Despite the significance for reproduction, the control mechanisms involved in gamete binding, fusion, and sperm incorporation are poorly understood...
May 17, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28527700/failure-of-hightibialvarus-osteotomy-for-lateral-tibio-femoral-osteoarthritis-with-10%C3%A2-of-valgus-outcomes-in-19-patients
#17
G Mirouse, A Dubory, F Roubineau, A Poignard, P Hernigou, J Allain, C H Flouzat Lachaniette
BACKGROUND: Osteotomy is a rational approach to slowing knee osteoarthritis progression by modifying loads, thereby avoiding joint replacement in younger individuals. Varus femoral osteotomy is recommended only in patients with more than 10° of valgus. The objective here was to assess outcomes of tibialvarus osteotomy in patients with lateral compartment tibio-femoral osteoarthritis and less than 10° of valgus. MATERIAL AND METHODS: A single-centre retrospective study was conducted in 19 consecutive patients managed by high tibialvarus osteotomy between January 2005 and May 2012...
May 17, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28527519/-adult-intramedullary-gliomas
#18
C Campello, F Parker, S Slimani, A Le Floch, A Herbrecht, N Aghakhani, C Lacroix, H Loiseau, J P Lejeune, G Perrin, J Honnorat, H Dufour, O Chinot, D Figarella, L Bauchet, H Duffau, M Lonjon, P Labauge, M Messerer, J P Daures, P Fabbro, B Ducot
OBJECTIVES: Intramedullary gliomas are rare tumors accounting for less than 4% of all primary central nervous system tumors. The aims of this retrospective multicenter study were to assess their natural outcome as well as management. METHODS AND MATERIALS: We studied 332 patients from 1984 to 2011. Histopathological examination revealed 72% ependymomas (94% were low grade tumors), 24% astrocytomas (29% were high grade tumors), 2.4% mixed gliomas and 1.7% oligodendrogliomas...
May 17, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28527399/the-effects-of-melamine-with-or-without-cyanuric-acid-on-immune-function-in-ovalbumin-sensitized-mice
#19
Rong H Yin, Qiao Dong, Hua S Li, Jing Yuan, Xi T Li, Rong L Yin, Wen Li, Wen C Wang, Bao S Liu, Xiao H Han, Ren F Wang, Xin Wang, Wen L Bai
Melamine is commonly used in the chemical industry, and it has been found to exist on food processing equipment and utensils. Previous investigations suggested that melamine alone or its combination with cyanuric acid appears to be toxic to immune system in animals. The objective of this study is to investigate the potential effects of melamine with or without cyanuric acid on immune function in ovalbumin- sensitized mice. Our data indicated that melamine-related administration caused a significant decreasing in the content of IL-4 in mice in comparison to negative control group...
May 13, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28526889/the-contribution-of-an-asthma-diagnostic-consultation-service-in-obtaining-an-accurate-asthma-diagnosis-for-primary-care-patients-results-of-a-real-life-study
#20
R M E Gillis, W van Litsenburg, R H van Balkom, J W Muris, F W Smeenk
Previous studies showed that general practitioners have problems in diagnosing asthma accurately, resulting in both under and overdiagnosis. To support general practitioners in their diagnostic process, an asthma diagnostic consultation service was set up. We evaluated the performance of this asthma diagnostic consultation service by analysing the (dis)concordance between the general practitioners working hypotheses and the asthma diagnostic consultation service diagnoses and possible consequences this had on the patients' pharmacotherapy...
May 19, 2017: NPJ Primary Care Respiratory Medicine
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