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https://www.readbyqxmd.com/read/28320167/caffeine-creatine-grin2a-and-parkinson-s-disease-progression
#1
David K Simon, Cai Wu, Barbara C Tilley, Katja Lohmann, Christine Klein, Haydeh Payami, Anne-Marie Wills, Michael J Aminoff, Jacquelyn Bainbridge, Richard Dewey, Robert A Hauser, Susen Schaake, Jay S Schneider, Saloni Sharma, Carlos Singer, Caroline M Tanner, Daniel Truong, Peng Wei, Pei Shieen Wong, Tianzhong Yang
Caffeine is neuroprotective in animal models of Parkinson's disease (PD) and caffeine intake is inversely associated with the risk of PD. This association may be influenced by the genotype of GRIN2A, which encodes an NMDA-glutamate-receptor subunit. In two placebo-controlled studies, we detected no association of caffeine intake with the rate of clinical progression of PD, except among subjects taking creatine, for whom higher caffeine intake was associated with more rapid progression. We now have analyzed data from 420 subjects for whom DNA samples and caffeine intake data were available from a placebo-controlled study of creatine in PD...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28318597/the-timing-of-surgery-of-antenatally-diagnosed-choledochal-malformations-a-descriptive-analysis-of-a-26-year-nationwide-cohort
#2
Maria H A van den Eijnden, Ruben H de Kleine, Ivo de Blaauw, Paul M J G Peeters, Bart G P Koot, Matthijs W N Oomen, Cornelius E J Sloots, Wim G van Gemert, David C van der Zee, L W Ernest van Heurn, Henkjan J Verkade, Jim C H Wilde, Jan B F Hulscher
INTRODUCTION: Choledochal malformations (CMs) are increasingly diagnosed antenatally. There is a dilemma between early surgery to prevent CM-related symptoms and postponing surgery to reduce complications. We aimed to identify the optimal timing of surgery in asymptomatic neonates with antenatally diagnosed CM and to identify predictors for development of symptoms. METHODS: Using the Netherlands Study group on CHoledochal Cyst/malformation (NeSCHoc) we retrospectively collected demographic, biochemical and surgical data from all Dutch patients with an antenatally detected CM...
March 12, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28303661/immunological-and-physiological-observations-in-baboons-with-life-supporting-genetically-engineered-pig-kidney-grafts
#3
Hayato Iwase, Hidetaka Hara, Mohamed Ezzelarab, Tao Li, Zhongqiang Zhang, Bingsi Gao, Hong Liu, Cassandra Long, Yi Wang, Amy Cassano, Edwin Klein, Carol Phelps, David Ayares, Abhinav Humar, Martin Wijkstrom, David K C Cooper
BACKGROUND: Genetically engineered pigs could provide a source of kidneys for clinical transplantation. The two longest kidney graft survivals reported to date have been 136 and 310 days, but graft survival >30 days has been unusual until recently. METHODS: Donor pigs (n=4) were on an α1,3-galactosyltransferase gene-knockout (GTKO)/human complement regulatory protein (CD46) background (GTKO/CD46). In addition, the pigs were transgenic for at least one human coagulation regulatory protein...
March 17, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28300057/combined-toll-like-receptor-3-7-9-deficiency-on-host-cells-results-in-t-cell-dependent-control-of-tumour-growth
#4
Johanna C Klein, Katrin Moses, Gennadiy Zelinskyy, Simon Sody, Jan Buer, Stephan Lang, Iris Helfrich, Ulf Dittmer, Carsten J Kirschning, Sven Brandau
Toll-like receptors (TLRs) are located either on the cell surface or intracellularly in endosomes and their activation normally contributes to the induction of protective immune responses. However, in cancer their activation by endogenous ligands can modulate tumour progression. It is currently unknown how endosomal TLRs regulate endogenous anti-tumour immunity. Here we show that TLR3, 7 and 9 deficiencies on host cells, after initial tumour growth, result in complete tumour regression and induction of anti-tumour immunity...
March 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28298521/the-interaction-of-pneumocystis-with-the-c-type-lectin-receptor-mincle-exerts-a-significant-role-in-host-defense-against-infection
#5
Theodore J Kottom, Deanne M Hebrink, Paige E Jenson, Vijayalakshmi Nandakumar, Marcel Wüthrich, Huafeng Wang, Bruce Klein, Sho Yamasaki, Bernd Lepenies, Andrew H Limper
Pneumocystis pneumonia (PCP) remains a major cause of morbidity and mortality within immunocompromised patients. In this study, we examined the potential role of macrophage-inducible C-type lectin (Mincle) for host defense against Pneumocystis Binding assays implementing soluble Mincle carbohydrate recognition domain fusion proteins demonstrated binding to intact Pneumocystis carinii as well as to organism homogenates, and they purified major surface glycoprotein/glycoprotein A derived from the organism. Additional experiments showed that rats with PCP expressed increased Mincle mRNA levels...
March 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28298109/experimental-studies-of-the-nacs-12-0-7-1-%C3%AE-state-spin-orbit-and-non-adiabatic-interactions-and-quantum-interference-in-the-12-0-7-1-%C3%AE-and-11-0-5-3-%C3%AE-0-emission-spectra
#6
C Faust, J Jones, J Huennekens, R W Field
We present results from experimental studies of the 11(0(+)) and 12(0(+)) electronic states of the NaCs molecule. An optical-optical double resonance method is used to obtain Doppler-free excitation spectra. Selected data from the 11(0(+)) and 12(0(+)) high-lying electronic states are used to obtain Rydberg-Klein-Rees and Inverse Perturbation Approach potential energy curves. Interactions between these two electronic states are evident in the patterns observed in the bound-bound and bound-free fluorescence spectra...
March 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28296084/de-novo-loss-of-function-variants-in-stag2-are-associated-with-developmental-delay-microcephaly-and-congenital-anomalies
#7
Sureni V Mullegama, Steven D Klein, Milene V Mulatinho, Tharanga Niroshini Senaratne, Kathryn Singh, Dzung C Nguyen, Natalie M Gallant, Samuel P Strom, Shahnaz Ghahremani, Nagesh P Rao, Julian A Martinez-Agosto
The cohesin complex is an evolutionarily conserved multi-subunit protein complex which regulates sister chromatid cohesion during mitosis and meiosis. Additionally, the cohesin complex regulates DNA replication, DNA repair, and transcription. The core of the complex consists of four subunits: SMC1A, SMC3, RAD21, and STAG1/2. Loss-of-function mutations in many of these proteins have been implicated in human developmental disorders collectively termed "cohesinopathies." Through clinical exome sequencing (CES) of an 8-year-old girl with a clinical history of global developmental delay, microcephaly, microtia with hearing loss, language delay, ADHD, and dysmorphic features, we describe a heterozygous de novo variant (c...
March 11, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28295052/dynamic-circulation-and-genetic-exchange-of-a-shrew-borne-hantavirus-imjin-virus-in-the-republic-of-korea
#8
Seung-Ho Lee, Won-Keun Kim, Jin Sun No, Jeong-Ah Kim, Jin Il Kim, Se Hun Gu, Heung-Chul Kim, Terry A Klein, Man-Seong Park, Jin-Won Song
Hantaviruses (family Bunyaviridae) are enveloped negative-sense tripartite RNA viruses. The natural hosts of hantaviruses include rodents, shrews, moles, and bats. Imjin virus (MJNV) is a shrew-borne hantavirus identified from the Ussuri white-toothed shrews (Crocidura lasiura) in the Republic of Korea (ROK) and China. We have isolated MJNV and determined its prevalence and molecular diversity in Gyeonggi province, ROK. However, the distribution and phylogeography of MJNV in other regions of ROK remain unknown...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28289797/-epidemiology-and-causes-of-parkinson-s-disease
#9
C M Lill, C Klein
Parkinson's disease (PD) is the second most common neurodegenerative disease and has a growing socioeconomic impact due to demographic changes in the industrial nations. There are several forms of PD, a fraction of which (<5%) are monogenic, i. e. caused by mutations in single genes. At present, six genes have been established for the clinically classical form of parkinsonism including three autosomal dominantly (SNCA, LRRK2, VPS35) and three autosomal recessively inherited ones (Parkin, PINK1, DJ-1)...
March 13, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28289286/early-antibody-therapy-can-induce-long-lasting-immunity-to-shiv
#10
Yoshiaki Nishimura, Rajeev Gautam, Tae-Wook Chun, Reza Sadjadpour, Kathryn E Foulds, Masashi Shingai, Florian Klein, Anna Gazumyan, Jovana Golijanin, Mitzi Donaldson, Olivia K Donau, Ronald J Plishka, Alicia Buckler-White, Michael S Seaman, Jeffrey D Lifson, Richard A Koup, Anthony S Fauci, Michel C Nussenzweig, Malcolm A Martin
Highly potent and broadly neutralizing anti-HIV-1 antibodies (bNAbs) have been used to prevent and treat lentivirus infections in humanized mice, macaques, and humans. In immunotherapy experiments, administration of bNAbs to chronically infected animals transiently suppresses virus replication, which invariably returns to pre-treatment levels and results in progression to clinical disease. Here we show that early administration of bNAbs in a macaque simian/human immunodeficiency virus (SHIV) model is associated with very low levels of persistent viraemia, which leads to the establishment of T-cell immunity and resultant long-term infection control...
March 13, 2017: Nature
https://www.readbyqxmd.com/read/28289168/wild-type-ttr-neuropathy-with-cardiomyopathy-presenting-with-burning-feet
#11
Amy C Visser, Christopher J Klein
No abstract text is available yet for this article.
March 14, 2017: Neurology
https://www.readbyqxmd.com/read/28285983/assessing-misclassification-of-vaccination-status-implications-for-studies-of-the-safety-of-the-childhood-immunization-schedule
#12
Matthew F Daley, Jason M Glanz, Sophia R Newcomer, Michael L Jackson, Holly C Groom, Marlene M Lugg, Huong Q McLean, Nicola P Klein, Eric S Weintraub, Michael M McNeil
BACKGROUND: To address public concern about the safety of the childhood immunization schedule, the Institute of Medicine recommended observational studies comparing adverse health outcomes of fully vaccinated children to children under-vaccinated due to parental choice. Misclassification of vaccination status could bias such studies. OBJECTIVE: To assess risk of misclassification of vaccination status within the Vaccine Safety Datalink (VSD). DESIGN/METHODS: A retrospective cohort study was conducted in three phases...
March 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28284954/peri-adolescent-asthma-symptoms-cause-adult-anxiety-related-behavior-and-neurobiological-processes-in-mice
#13
Jasmine I Caulfield, Michael J Caruso, Kerry C Michael, Rebecca A Bourne, Nicole R Chirichella, Laura C Klein, Timothy Craig, Robert H Bonneau, Avery August, Sonia A Cavigelli
Human and animal studies have shown that physical challenges and stressors during adolescence can have significant influences on behavioral and neurobiological development associated with internalizing disorders such as anxiety and depression. Given the prevalence of asthma during adolescence and increased rates of internalizing disorders in humans with asthma, we used a mouse model to test if and which symptoms of adolescent allergic asthma (airway inflammation or labored breathing) cause adult anxiety- and depression-related behavior and brain function...
March 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28283061/functional-selectivity-in-cytokine-signaling-revealed-through-a-pathogenic-epo-mutation
#14
Ah Ram Kim, Jacob C Ulirsch, Stephan Wilmes, Ekrem Unal, Ignacio Moraga, Musa Karakukcu, Daniel Yuan, Shideh Kazerounian, Nour J Abdulhay, David S King, Namrata Gupta, Stacey B Gabriel, Eric S Lander, Turkan Patiroglu, Alper Ozcan, Mehmet Akif Ozdemir, K Christopher Garcia, Jacob Piehler, Hanna T Gazda, Daryl E Klein, Vijay G Sankaran
Cytokines are classically thought to stimulate downstream signaling pathways through monotonic activation of receptors. We describe a severe anemia resulting from a homozygous mutation (R150Q) in the cytokine erythropoietin (EPO). Surprisingly, the EPO R150Q mutant shows only a mild reduction in affinity for its receptor but has altered binding kinetics. The EPO mutant is less effective at stimulating erythroid cell proliferation and differentiation, even at maximally potent concentrations. While the EPO mutant can stimulate effectors such as STAT5 to a similar extent as the wild-type ligand, there is reduced JAK2-mediated phosphorylation of select downstream targets...
March 9, 2017: Cell
https://www.readbyqxmd.com/read/28282442/characterization-of-c-type-lectins-reveals-an-unexpectedly-limited-interaction-between-cryptococcus-neoformans-spores-and-dectin-1
#15
Naomi M Walsh, Marcel Wuthrich, Huafeng Wang, Bruce Klein, Christina M Hull
Phagocytosis by innate immune cells is an important process for protection against multiple pathologies and is particularly important for resistance to infection. However, phagocytosis has also been implicated in the progression of some diseases, including the dissemination of the human fungal pathogen, Cryptococcus neoformans. Previously, we identified Dectin-1 as a likely phagocytic receptor for C. neoformans spores through the use of soluble components in receptor-ligand blocking experiments. In this study, we used gain-of-function and loss-of-function assays with intact cells to evaluate the in vivo role of Dectin-1 and other C-type lectins in interactions with C...
2017: PloS One
https://www.readbyqxmd.com/read/28280881/tryptophan-depletion-affects-compulsive-behaviour-in-rats-strain-dependent-effects-and-associated-neuromechanisms
#16
A Merchán, S V Navarro, A B Klein, S Aznar, L Campa, C Suñol, M Moreno, P Flores
RATIONALE: Compulsive behaviour, present in different psychiatric disorders, such as obsessive-compulsive disorder, schizophrenia and drug abuse, is associated with altered levels of monoamines, particularly serotonin (5-hydroxytryptamine) and its receptor system. OBJECTIVES: The present study investigated whether 5-HT manipulation, through a tryptophan (TRP) depletion by diet in Wistar and Lister Hooded rats, modulates compulsive drinking in schedule-induced polydipsia (SIP) and locomotor activity in the open-field test...
March 9, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28280483/outer-plexiform-layer-structures-are-not-altered-following-aav-mediated-gene-transfer-in-healthy-rat-retina
#17
Bert C Giers, Daniela Klein, Alexandra Mendes-Madeira, Carolina Isiegas, Birgit Lorenz, Silke Haverkamp, Knut Stieger
Ocular gene therapy approaches have been developed for a variety of different diseases. In particular, clinical gene therapy trials for RPE65 mutations, X-linked retinoschisis, and choroideremia have been conducted at different centers in recent years, showing that adeno-associated virus (AAV)-mediated gene therapy is safe, but limitations exist as to the therapeutic benefit and long-term duration of the treatment. The technique of vector delivery to retinal cells relies on subretinal injection of the vector solution, causing a transient retinal detachment...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28279987/risk-of-thrombus-fragmentation-during-endovascular-stroke-treatment
#18
J Kaesmacher, T Boeckh-Behrens, S Simon, C Maegerlein, J F Kleine, C Zimmer, L Schirmer, H Poppert, T Huber
BACKGROUND AND PURPOSE: Periprocedural thrombus fragmentation is a relevant risk in endovascular stroke treatment. Because factors influencing its occurrence are largely unknown, this study addresses a potential relationship between thrombus histology and clot stability. MATERIALS AND METHODS: Eighty-five patients with anterior circulation stroke treated with thrombectomy were included in this retrospective study. The number and location of emboli after retrieving the primary thrombus, the number of maneuvers, and TICI scores were evaluated...
March 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28275858/erratum-to-blood-trace-evidence-on-washed-textiles-a-systematic-approach
#19
Carolin Edler, A Gehl, J Kohwagner, M Walther, O Krebs, C Augustin, A Klein
No abstract text is available yet for this article.
March 8, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28266154/enhanced-atrazine-degradation-is-widespread-across-the-united-states
#20
Thomas C Mueller, Ethan T Parker, Larry Steckel, Sharon A Clay, Micheal D K Owen, William S Curran, Randall Currie, Robert Scott, Christy Sprague, Daniel O Stephenson, Donnie K Miller, Eric P Prostko, W James Grichar, James Martin, L Jason Kruz, Kevin Bradley, Mark L Bernards, Peter Dotray, Stevan Knezevic, Vince Davis, Robert Klein
BACKGROUND: Atrazine (ATZ) has been a key herbicide for annual weed control in corn, with both a soil and postemergence vegetation application period. Although enhanced ATZ degradation in soil with a history of ATZ use has been reported, the extent and rate of degradation in the U.S. Corn Belt is uncertain. We show that enhanced ATZ degradation exists across much of the country. RESULTS: Soils from 15 of 16 surveyed states had enhanced ATZ degradation. The average ATZ half-life was only 2...
March 7, 2017: Pest Management Science
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