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Lorène Penazzi, Julia Lorengel, Frederik Sündermann, Nataliya Golovyashkina, Stefan Marre, Chantal M B Mathis, Lars Lewejohann, Roland Brandt, Lidia Bakota
DMSO has a widespread use as a vehicle for water-insoluble therapeutic drug candidates but may also exert disease-relevant pharmacological effects by itself. However, its influence on the CNS has hardly been addressed. Here we examined the brain structure and function following chronic exposure to low DMSO dose at a paradigm with flawed synaptic connectivity in a preclinical transgenic mouse model for Alzheimer's disease (APPSDL mice). DMSO treatment increased spine density in a region-specific manner in the hippocampus of APPSDL mice ex vivo and in vivo...
October 20, 2016: Neuropharmacology
Naseem Jamnia, Janice H Urban, Grace Beth Stuzmann, Sarah Chiren, Emily Reisenbigler, Robert Marr, Daniel A Peterson, Dorothy A Kozlowski
Repeat concussions (RC) can result in significant long-term neurological consequences and increased risk for neurodegenerative disease compared to single concussion (SC). Mechanisms underlying this difference are poorly understood and best elucidated using an animal model. To the best of our knowledge, there is no closed-head model in the adult rat using a commercially available device. We developed a novel and clinically relevant closed-head injury (CHI) model of both single and multiple concussions in the adult rat using a controlled cortical impact (CCI) device...
October 20, 2016: Journal of Neurotrauma
Vasileios Ziogas, Georgia Tanou, Maya Belghazi, Grigorios Diamantidis, Athanassios Molassiotis
BABA or GABA induces salinity acclimation during citrus seeds germination via alternation of specific proteins (e.g., citrin). The impact of four elicitors, namely hydrogen peroxide (H2O2), β-amino butyric acid (BABA), γ-amino butyric acid (GABA) and hydrogen sulfide (H2S) donor, sodium hydrosulfide (NaHS), in citrus seed germination under salinity (150 mM NaCl) was tested. The germination potential was adversely affected by NaCl-alone treatment. Pretreatment with H2O2 or the NaHS-H2S donor prior to salinity had no significant effect in germination process, however, BABA and GABA substantially improved seed acclimation to salinity, as evidenced by increased germination percentage and radicle length...
October 19, 2016: Plant Cell Reports
Zahir H Alshehry, Piyushkumar A Mundra, Christopher K Barlow, Natalie A Mellett, Gerard Wong, Malcolm J McConville, John Simes, Andrew M Tonkin, David R Sullivan, Elizabeth H Barnes, Paul J Nestel, Bronwyn A Kingwell, Michel Marre, Bruce Neal, Neil R Poulter, Anthony Rodgers, Bryan Williams, Sophia Zoungas, Graham S Hillis, John Chalmers, Mark Woodward, Peter J Meikle
BACKGROUND: -Clinical lipid measurements do not show the full complexity of the altered lipid metabolism associated with diabetes or cardiovascular disease. Lipidomics enables the assessment of hundreds of lipid species as potential markers for disease risk. METHODS: -Plasma lipid species (310) were measured by a targeted lipidomic analysis with liquid chromatography electrospray ionisation-tandem mass spectrometry on a case-cohort (n=3,779) subset from the ADVANCE (Action in Diabetes and Vascular disease: preterAx and diamicroN-MR Controlled Evaluation) trial...
October 18, 2016: Circulation
Paul Simon, Aelna Krajčoviechová, Francois Harvey, Mousnif Haloui, Francois-Christophe Marois-Blanchet, John Chalmers, Mark Woodward, Michel Marre, Johanne Tremblay, Pavel Hamet
OBJECTIVE: We have previously reported the genetic determinants of unmet renal needs in Type 2 Diabetic (T2D) patients of the ADVANCE study (Abstract 0105-PD, IDF - World Diabetes Congress, Vancouver, 2015). We report here the external validation of several of these loci. An improved knowledge of the genetics linked to worsening diabetic nephropathy will offer insights on how to better manage this complication of diabetes and hypertension in T2D patients. DESIGN AND METHOD: We investigated 3,500 T2D patients of Caucasian origin included in the ADVANCE trial who were all treated with current standard therapies...
September 2016: Journal of Hypertension
Pavel Hamet, Mounsif Haloui, François Harvey, François-Christophe Marois-Blanchet, Paul Simon, John Raelson, Michael Phillips, John Chalmers, Mark Woodward, Michel Marre, Stephen Harrap, Johanne Tremblay
OBJECTIVE: We have previously reported distinct genetic architectures of renal impairment in T2D patients of Slavic and Celtic origins participating in the ADVANCE trial (J Hypertens. 2015 Jun;33 Suppl 1:e3). Further analysis suggests that the major driver of the difference in the prevalence of T2D complications between Slavic and Celtic groups is due to an earlier onset of diabetes in Slavic patients. In an attempt to distinguish between environmental and genetic factors on age of onset of diabetes, we have determined the age of onset of T2D in Slavic subjects living in Celtic countries and confirmed the same earlier onset (-2 years) in these subjects, notwithstanding their living environment...
September 2016: Journal of Hypertension
Jan Pieter Marchal, Heleen Maurice-Stam, Bregje A Houtzager, Susanne L Rutgers van Rozenburg-Marres, Kim J Oostrom, Martha A Grootenhuis, A S Paul van Trotsenburg
BACKGROUND: We analysed developmental outcomes from a clinical trial early in life and its follow-up at 10.7 years in 123 children with Down syndrome. AIMS: To determine 1) strengths and weaknesses in adaptive functioning and motor skills at 10.7 years, and 2) prognostic value of early-life characteristics (early developmental outcomes, parental and child characteristics, and comorbidity) for later intelligence, adaptive functioning and motor skills. METHODS AND PROCEDURES: We used standardized assessments of mental and motor development at ages 6, 12 and 24 months, and of intelligence, adaptive functioning and motor skills at 10...
October 13, 2016: Research in Developmental Disabilities
Anna-Theresa Lülf, Astrid Freudenstein, Lisa Marr, Gerd Sutter, Asisa Volz
In cell culture infections with vaccinia virus the number of counted virus particles is substantially higher than the number of plaques obtained by titration. We found that standard vaccine preparations of recombinant Modified Vaccinia virus Ankara produce only about 20-30% plaque-forming virions in fully permissive cell cultures. To evaluate the biological activity of the non-plaque-forming particles, we generated recombinant viruses expressing fluorescent reporter proteins under transcriptional control of specific viral early and late promoters...
October 11, 2016: Virology
Rohen White, Farshad Foroudi, Joseph Sia, Mary Ann Marr, Daryl Lim Joon
INTRODUCTION: No consensus exists regarding the optimal treatment setup for neoadjuvant radiotherapy of rectal cancer using a 3D conformal (3D CRT) technique. Positioning the patient prone with a belly board aims to reduce the amount of small bowel irradiated. METHODS: Twenty-five patients with locally advanced rectal cancer underwent computed tomography (CT) planning for neoadjuvant chemoradiotherapy. Patients were simulated prone with a belly board and then in the supine position...
July 28, 2016: Journal of Medical Radiation Sciences
Gilberto Velho, Ray El Boustany, Guillaume Lefèvre, Kamel Mohammedi, Frédéric Fumeron, Louis Potier, Lise Bankir, Nadine Bouby, Samy Hadjadj, Michel Marre, Ronan Roussel
OBJECTIVE: Plasma copeptin, a surrogate for vasopressin, has been associated with a decline in renal function and albuminuria in population-based studies as well as with progression of diabetic nephropathy in people with type 2 diabetes. We assessed the risk of kidney and coronary events and all-cause mortality associated with plasma copeptin in people with type 1 diabetes. RESEARCH DESIGN AND METHODS: Plasma copeptin was measured in baseline samples of the GENEDIAB (n = 398; 56% male; mean ± SD age 45 ± 12 years and diabetes duration 28 ± 10 years) and GENESIS (n = 588; 52% male; age 42 ± 11 years; diabetes duration 27 ± 9 years) cohorts...
October 11, 2016: Diabetes Care
Paula Moran, Jennifer Stokes, Julia Marr, Gavin Bock, Lieve Desbonnet, John Waddington, Colm O'Tuathaigh
The study of gene × environment, as well as epistatic interactions in schizophrenia, has provided important insight into the complex etiopathologic basis of schizophrenia. It has also increased our understanding of the role of susceptibility genes in the disorder and is an important consideration as we seek to translate genetic advances into novel antipsychotic treatment targets. This review summarises data arising from research involving the modelling of gene × environment interactions in schizophrenia using preclinical genetic models...
2016: Neural Plasticity
Swapnalee Sarmah, Pooja Muralidharan, James A Marrs
Congenital anomalies, congenital defects, or birth defects are significant causes of death in infants. The most common congenital defects are congenital heart defects (CHDs) and neural tube defects (NTDs). Defects induced by genetic mutations, environmental exposure to toxins, or a combination of these effects can result in congenital malformations, leading to infant death or long-term disabilities. These defects produce significant mortality and morbidity in the affected individuals, and families are affected emotional and financially...
October 7, 2016: Birth Defects Research. Part C, Embryo Today: Reviews
Olena Riabinina, Darya Task, Elizabeth Marr, Chun-Chieh Lin, Robert Alford, David A O'Brochta, Christopher J Potter
Mosquitoes are vectors for multiple infectious human diseases and use a variety of sensory cues (olfactory, temperature, humidity and visual) to locate a human host. A comprehensive understanding of the circuitry underlying sensory signalling in the mosquito brain is lacking. Here we used the Q-system of binary gene expression to develop transgenic lines of Anopheles gambiae in which olfactory receptor neurons expressing the odorant receptor co-receptor (Orco) gene are labelled with GFP. These neurons project from the antennae and maxillary palps to the antennal lobe (AL) and from the labella on the proboscis to the suboesophageal zone (SEZ), suggesting integration of olfactory and gustatory signals occurs in this brain region...
October 3, 2016: Nature Communications
Loic Yengo, Abdelilah Arredouani, Michel Marre, Ronan Roussel, Martine Vaxillaire, Mario Falchi, Abdelali Haoudi, Jean Tichet, Beverley Balkau, Amélie Bonnefond, Philippe Froguel
OBJECTIVE: Characterizing specific metabolites in sub-clinical phases preceding the onset of type 2 diabetes to enable efficient preventive and personalized interventions. RESEARCH DESIGN AND METHODS: We developed predictive models of type 2 diabetes using two strategies. One strategy focused on the probability of incidence only and was based on logistic regression (MRS1); the other strategy accounted for the age at diagnosis of diabetes and was based on Cox regression (MRS2)...
October 2016: Molecular Metabolism
(no author information available yet)
Becky Marr, one of the recent graduate representatives on BVA Council, encourages new and recent graduates to get involved with the Young Vet Network.
October 1, 2016: Veterinary Record
Ray F David, Michael Reinisch, Frances Trail, Linsey C Marr, David G Schmale
The plant pathogenic ascomycete Fusarium graminearum produces perithecia on corn and small grain residues. These perithecia forcibly discharge ascospores into the atmosphere. Little is known about the relationship among the strength of the perithecial wall, the age of the perithecium, and the quantity of ascospores produced. We used a mechanical compression testing instrument to examine the structural failure rate of perithecial walls from three different strains of F. graminearum (two wild type strains, and a mutant strain unable to produce asci)...
September 28, 2016: Fungal Genetics and Biology: FG & B
John S Marr, John T Cathey
The Control of Communicable Diseases Manual, a premier publication of the American Public Health Association, celebrates its centennial in 2017. The Control of Communicable Diseases Manual has evolved in format and content through 20 separate editions. This article is a follow-up to an earlier article, titled "Evolution of the Control of Communicable Disease Manual: 1917 to 2000," that appeared in the Journal of Public Health Management & Practice in 2001. Our update focuses on the period since the 17th edition, which is characterized by dramatic changes...
November 2016: Journal of Public Health Management and Practice: JPHMP
Abhishek Sengupta, Antoine Chaffiol, Emilie Macé, Romain Caplette, Mélissa Desrosiers, Maruša Lampič, Valérie Forster, Olivier Marre, John Y Lin, José-Alain Sahel, Serge Picaud, Deniz Dalkara, Jens Duebel
Targeting the photosensitive ion channel channelrhodopsin-2 (ChR2) to the retinal circuitry downstream of photoreceptors holds promise in treating vision loss caused by retinal degeneration. However, the high intensity of blue light necessary to activate channelrhodopsin-2 exceeds the safety threshold of retinal illumination because of its strong potential to induce photochemical damage. In contrast, the damage potential of red-shifted light is vastly lower than that of blue light. Here, we show that a red-shifted channelrhodopsin (ReaChR), delivered by AAV injections in blind rd1 mice, enables restoration of light responses at the retinal, cortical, and behavioral levels, using orange light at intensities below the safety threshold for the human retina...
September 27, 2016: EMBO Molecular Medicine
Kamel Mohammedi, Mark Woodward, Sophia Zoungas, Qiang Li, Stephen Harrap, Anushka Patel, Michel Marre, John Chalmers
OBJECTIVE: The burden of vascular diseases remains substantial in patients with type 2 diabetes, requiring identification of further risk markers. We tested the absence of dorsalis pedis and posterior tibial pulses as predictors of major macrovascular and microvascular events, death, and cognitive decline in this population. RESEARCH DESIGN AND METHODS: Data were derived from 11,120 patients with type 2 diabetes in the Action in Diabetes and Vascular Disease: Preterax and Diamicron Modified-Release Controlled Evaluation (ADVANCE) study...
September 27, 2016: Diabetes Care
Boris Hansel, Dominique Bonnefont-Rousselot, Alexina Orsoni, Randa Bittar, Philippe Giral, Ronan Roussel, Michel Marre, Kamel Mohammedi, Eric Bruckert, Martin John Chapman, Anatol Kontush
BACKGROUND: Metabolic syndrome (MetS) is associated with altered lipoprotein metabolism and impairment in the functionality of small, dense high-density lipoprotein (HDL) particles secondary to compositional alterations. OBJECTIVE: The objective of this study was to investigate the capacity of a lifestyle program to improve the composition and antioxidative function (AOX) of small dense HDL3c in MetS. METHODS: Patients with MetS (n = 33) not taking lipid-lowering drugs were recruited to follow a 12-week educational program to reduce caloric intake and to increase physical activity...
September 2016: Journal of Clinical Lipidology
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