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https://www.readbyqxmd.com/read/27926985/tropical-rainforests-that-persisted-inferences-from-the-quaternary-demographic-history-of-eight-tree-species-in-the-guiana-shield
#1
Stéphanie Barthe, Giorgio Binelli, Bruno Hérault, Caroline Scotti-Saintagne, Daniel Sabatier, Ivan Scotti
How Quaternary climatic and geological disturbances influenced the composition of Neotropical forests is hotly debated. Rain fall and temperature changes during and/or immediately after the Last Glacial Maximum (LGM) are thought to have strongly affected the geographical distribution and local abundance of tree species. The paucity of the fossil records in Neotropical forests prevents a direct reconstruction of such processes. To describe community-level historical trends in forest composition, we turned therefore to inferential methods based on the reconstruction of past demographic changes...
December 7, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27926911/first-rank-symptoms-in-methamphetamine-psychosis-and-schizophrenia
#2
James Shelly, Anne Uhlmann, Heidi Sinclair, Fleur M Howells, Goodman Sibeko, Don Wilson, Dan J Stein, Henk Temmingh
BACKGROUND: Methamphetamine psychosis (MAP) symptomatology has been described as indistinguishable from that of schizophrenia (SZ), yet research comparing these two disorders on specific psychotic symptoms such as schneiderian first-rank symptoms (FRS) is lacking. We aimed to determine and compare the occurrence and associations of FRS in patients diagnosed with MAP and with SZ. SAMPLING AND METHOD: Data from SCID-I interviews performed on patients with either a diagnosis of SZ or MAP were compared...
December 8, 2016: Psychopathology
https://www.readbyqxmd.com/read/27926873/foxa1-directs-h3k4-monomethylation-at-enhancers-via-recruitment-of-the-methyltransferase-mll3
#3
Kamila M Jozwik, Igor Chernukhin, Aurelien A Serandour, Sankari Nagarajan, Jason S Carroll
FOXA1 is a pioneer factor that binds to enhancer regions that are enriched in H3K4 mono- and dimethylation (H3K4me1 and H3K4me2). We performed a FOXA1 rapid immunoprecipitation mass spectrometry of endogenous proteins (RIME) screen in ERα-positive MCF-7 breast cancer cells and found histone-lysine N-methyltransferase (MLL3) as the top FOXA1-interacting protein. MLL3 is typically thought to induce H3K4me3 at promoter regions, but recent findings suggest it may contribute to H3K4me1 deposition. We performed MLL3 chromatin immunoprecipitation sequencing (ChIP-seq) in breast cancer cells, and MLL3 was shown to occupy regions marked by FOXA1 occupancy and H3K4me1 and H3K4me2...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27926861/immunometabolic-pathways-in-bcg-induced-trained-immunity
#4
Rob J W Arts, Agostinho Carvalho, Claudia La Rocca, Carla Palma, Fernando Rodrigues, Ricardo Silvestre, Johanneke Kleinnijenhuis, Ekta Lachmandas, Luís G Gonçalves, Ana Belinha, Cristina Cunha, Marije Oosting, Leo A B Joosten, Giuseppe Matarese, Reinout van Crevel, Mihai G Netea
The protective effects of the tuberculosis vaccine Bacillus Calmette-Guerin (BCG) on unrelated infections are thought to be mediated by long-term metabolic changes and chromatin remodeling through histone modifications in innate immune cells such as monocytes, a process termed trained immunity. Here, we show that BCG induction of trained immunity in monocytes is accompanied by a strong increase in glycolysis and, to a lesser extent, glutamine metabolism, both in an in-vitro model and after vaccination of mice and humans...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27926846/alamethicin-supramolecular-organization-in-lipid-membranes-from-19-f-solid-state-nmr
#5
Evgeniy S Salnikov, Jesus Raya, Marta De Zotti, Ekaterina Zaitseva, Cristina Peggion, Gema Ballano, Claudio Toniolo, Jan Raap, Burkhard Bechinger
Alamethicins (ALMs) are antimicrobial peptides of fungal origin. Their sequences are rich in hydrophobic amino acids and strongly interact with lipid membranes, where they cause a well-defined increase in conductivity. Therefore, the peptides are thought to form transmembrane helical bundles in which the more hydrophilic residues line a water-filled pore. Whereas the peptide has been well characterized in terms of secondary structure, membrane topology, and interactions, much fewer data are available regarding the quaternary arrangement of the helices within lipid bilayers...
December 6, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27926837/the-significance-of-the-location-of-mutations-for-the-native-state-dynamics-of-human-lysozyme
#6
Minkoo Ahn, Christine L Hagan, Ana Bernardo-Gancedo, Erwin De Genst, Francisco N Newby, John Christodoulou, Anne Dhulesia, Mireille Dumoulin, Carol V Robinson, Christopher M Dobson, Janet R Kumita
The conversion of human lysozyme into amyloid fibrils is associated with a rare but fatal hereditary form of nonneuropathic systemic amyloidosis. The accumulation of large amounts of aggregated protein is thought to be initiated by the formation of transient intermediate species of disease-related lysozyme variants, essentially due to the loss of global cooperativity under physiologically relevant conditions. Interestingly, all five naturally occurring, amyloidogenic, single-point mutations are located in the β-domain of lysozyme, the region that is predominantly unfolded during the formation of the transient intermediate species...
December 6, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27926659/macroprolactinomas-and-nonfunctioning-pituitary-adenomas-and-pregnancy-outcomes
#7
Kimberley Lambert, Kate Rees, Paul T Seed, Mandish K Dhanjal, Marian Knight, David R McCance, Catherine Williamson
OBJECTIVE: To examine the monitoring, management, and outcomes of pituitary tumors in pregnancy. METHODS: A national, prospective, observational, population-based case series study was conducted in all U.K. consultant-led obstetric units over 3 years using the U.K. Obstetric Surveillance System. To evaluate rates of adverse pregnancy outcomes, women with a macroprolactinoma (10 mm or greater) or nonfunctioning pituitary adenoma, diagnosed before or during pregnancy, were compared with two comparison groups: 1) a U...
December 2, 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27926649/association-of-gestational-weight-gain-expectations-and-advice-on-actual-weight-gain
#8
Rebecca A Krukowski, Delia S West, Marisha DiCarlo, Mario A Cleves, Marie E Saylors, Aline Andres
OBJECTIVE: To examine pregnant women's gestational weight gain expectations and advice from various sources (ie, self, family and friends, physician) and the association of these sources of expectations and advice with measured gestational weight gain. METHODS: This is a secondary analysis of a cohort study of 230 pregnant women in their second pregnancy. Each woman was queried at 12 weeks of gestation about the amount of weight: 1) she felt was "healthy" to gain, 2) she expected to gain, 3) her friends and family thought she should gain, and 4) the specificity of her physician's advice about gestational weight gain...
December 2, 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27926545/immune-responses-to-bioengineered-organs
#9
Jordi Ochando, Dominique Charron, Pedro M Baptista, Basak E Uygun
PURPOSE OF REVIEW: Organ donation in the United States registered 9079 deceased organ donors in 2015. This high percentage of donations allowed organ transplantation in 29 851 recipients. Despite increasing numbers of transplants performed in comparison with previous years, the numbers of patients that are in need for a transplant increase every year at a higher rate. This reveals that the discrepancy between the demand and availability of organs remains fundamental problem in organ transplantation...
December 6, 2016: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/27926429/biologically-produced-methane-as-a-renewable-energy-source
#10
D E Holmes, J A Smith
Methanogens are a unique group of strictly anaerobic archaea that are more metabolically diverse than previously thought. Traditionally, it was thought that methanogens could only generate methane by coupling the oxidation of products formed by fermentative bacteria with the reduction of CO2. However, it has recently been observed that many methanogens can also use electrons extruded from metal-respiring bacteria, biocathodes, or insoluble electron shuttles as energy sources. Methanogens are found in both human-made and natural environments and are responsible for the production of ∼71% of the global atmospheric methane...
2016: Advances in Applied Microbiology
https://www.readbyqxmd.com/read/27926353/roles-of-body-image-related-experiential-avoidance-and-uncommitted-living-in-the-link-between-body-image-and-women-s-quality-of-life
#11
Inês A Trindade, Cláudia Ferreira, José Pinto-Gouveia
The current study aimed to test whether the associations of body mass index, body image discrepancy, and social comparison based on physical appearance with women's psychological quality of life (QoL) would be explained by the mechanisms of body image-related experiential avoidance and patterns of uncommitted living. The sample was collected from October 2014 to March 2015 and included 737 female college students (aged between 18 and 25 years) who completed validated self-report measures. Results demonstrated that the final path model explained 43% of psychological QoL and revealed an excellent fit...
December 7, 2016: Women & Health
https://www.readbyqxmd.com/read/27925658/pro-b-cells-propagated-in-stromal-cell-free-cultures-reconstitute-functional-b-cell-compartments-in-immunodeficient-mice
#12
Lilly von Muenchow, Panagiotis Tsapogas, Llucia Albertí-Servera, Giuseppina Capoferri, Marianne Doelz, Hannie Rolink, Nabil Bosco, Rhodri Ceredig, Antonius G Rolink
Up to now long-term in vitro growth of pro-B cells was thought to require stromal cells. However, here we show that fetal liver (FL) and bone marrow (BM) derived pro-B cells can be propagated long-term in stromal cell-free cultures supplemented with interleukin-7 (IL-7), stem cell factor and FLT3 ligand. Within a week, most cells expressed surface CD19, CD79A, λ5 and VpreB antigens and had rearranged immunoglobulin D-J heavy chain genes. Both FL and BM pro-B cells reconstituted the B-cell compartments of immuno-incompetent Rag2-deficient mice, with FL pro-B cells generating follicular, marginal zone (MZB) and B1a B cells, and BM pro-B cells giving rise mainly to MZB cells...
December 7, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27925606/increasing-awareness-and-acceptance-through-mindfulness-and-somatic-education-movements
#13
Paulo Vicente Bloise, Mário César Rezende Andrade, Hans Machado, Sérgio Baxter Andreoli
Context • The main feature of mindfulness-based interventions (MBI) is the encouragement of present moment awareness and of self-regulation, which are associated with health benefits. Meditating with the body in movement has been referred to as one of the most accessible ways of reaching such awareness. An MBI program, Mindfulness and Movements of Integration (MMI), has the same structure as mindfulness-based stress reduction (MBSR) but puts more emphasis on the body and uses somatic education (SE) movements instead of yoga postures...
October 2016: Advances in Mind-body Medicine
https://www.readbyqxmd.com/read/27925207/acetate-metabolism-does-not-reflect-astrocytic-activity-contributes-directly-to-gaba-synthesis-and-is-increased-by-silent-information-regulator-1-activation
#14
Benjamin D Rowlands, Matthias Klugmann, Caroline D Rae
[(13) C]acetate is known to label metabolites preferentially in astrocytes rather than neurons and it has consequently been used as a marker for astrocytic activity. Recent discoveries suggest that control of acetate metabolism and its contributions to the synthesis of metabolites in brain is not as simple as first thought. Here, using a Guinea pig brain cortical tissue slice model metabolizing [1-(13) C]D-glucose and [1,2-(13) C]acetate, we investigated control of acetate metabolism and the degree to which it reflects astrocytic activity...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27925199/dopamine-dependent-effects-on-basal-and-glutamate-stimulated-network-dynamics-in-cultured-hippocampal-neurons
#15
Yan Li, Xin Chen, Rhonda Dzakpasu, Katherine Conant
Oscillatory activity occurs in cortical and hippocampal networks with specific frequency ranges thought to be critical to working memory, attention, differentiation of neuronal precursors, and memory trace replay. Synchronized activity within relatively large neuronal populations is influenced by firing and bursting frequency within individual cells, and the latter is modulated by changes in intrinsic membrane excitability and synaptic transmission. Published work suggests that dopamine (DA), a potent modulator of learning and memory, acts on dopamine receptor 1-like dopamine receptors (D1Rs) to influence the phosphorylation and trafficking of glutamate receptor subunits, along with long-term potentiation (LTP) of excitatory synaptic transmission in striatum and prefrontal cortex...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27925076/experience-and-coping-strategies-in-relatives-of-addicts
#16
Ana Lucia de Moraes Horta, Celina Daspett, Julia Horta Tabosa do Egito, Rosa Maria Stefanini de Macedo
Objective: to understand the experience and coping strategies in relatives of drug addicts. Method: a study was developed with 87 relatives of addicts, registered in two Basic Health Units. The focus group was used as the study method, and content analysis was applied. Results: four categories were chosen: perception of relatives about the drug addiction of their family members; feelings and attitudes related to being a relative of an addict; difficulties found in the process; and, coping strategies...
November 2016: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/27924871/prognostic-implications-of-aspiration-pneumonia-in-patients-with-community-acquired-pneumonia-a-systematic-review-with-meta-analysis
#17
Kosaku Komiya, Bruce K Rubin, Jun-Ichi Kadota, Hiroshi Mukae, Tomohiro Akaba, Hiroshi Moro, Nobumasa Aoki, Hiroki Tsukada, Shingo Noguchi, Nobuaki Shime, Osamu Takahashi, Shigeru Kohno
: Aspiration pneumonia is thought to be associated with a poor outcome in patients with community acquired pneumonia (CAP). However, there has been no systematic review regarding the impact of aspiration pneumonia on the outcomes in patients with CAP. This review was conducted using the MOOSE guidelines: Patients: patients defined CAP. EXPOSURE: aspiration pneumonia defined as pneumonia in patients who have aspiration risk. Comparison: confirmed pneumonia in patients who were not considered to be at high risk for oral aspiration...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924847/a-late-paleocene-probable-metatherian-deltatheroidan-survivor-of-the-cretaceous-mass-extinction
#18
Xijun Ni, Qiang Li, Thomas A Stidham, Lüzhou Li, Xiaoyu Lu, Jin Meng
Deltatheroidans are primitive metatherian mammals (relatives of marsupials), previously thought to have become extinct during the Cretaceous mass extinction. Here, we report a tiny new deltatheroidan mammal (Gurbanodelta kara gen. et sp. nov.) discovered at the South Gobi locality in China (Xinjiang Province) that is the first Cenozoic record of this clade and renders Deltatheroida a Lazarus taxon (with a new record 10 million years younger than their supposed extinction). The vertebrate fauna associated with Gurbanodelta is most similar to that from the slightly older late Paleocene Subeng locality in Inner Mongolia...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924830/impaired-regenerative-capacity-and-lower-revertant-fibre-expansion-in-dystrophin-deficient-mdx-muscles-on-dba-2-background
#19
Merryl Rodrigues, Yusuke Echigoya, Rika Maruyama, Kenji Rowel Q Lim, So-Ichiro Fukada, Toshifumi Yokota
Duchenne muscular dystrophy, one of the most common lethal genetic disorders, is caused by mutations in the DMD gene and a lack of dystrophin protein. In most DMD patients and animal models, sporadic dystrophin-positive muscle fibres, called revertant fibres (RFs), are observed in otherwise dystrophin-negative backgrounds. RFs are thought to arise from skeletal muscle precursor cells and clonally expand with age due to the frequent regeneration of necrotic fibres. Here we examined the effects of genetic background on muscle regeneration and RF expansion by comparing dystrophin-deficient mdx mice on the C57BL/6 background (mdx-B6) with those on the DBA/2 background (mdx-DBA), which have a more severe phenotype...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924662/empathy-and-its-relationship-with-cognitive-and-emotional-functions-in-alcohol-dependency
#20
Almila Erol, Asusinem Akyalcin Kirdok, Nabi Zorlu, Serap Polat, Levent Mete
BACKGROUND: Empathy can be defined as the ability to understand the other's thoughts and feelings. It contains both cognitive and emotional components. AIMS: The aim of this study was to investigate the empathy ability of patients with alcohol dependency in association with cognitive and emotional functions, after acute detoxification and during long-term abstinence. METHODS: Thirty-three alcohol dependent inpatients that completed a detoxification process and stayed abstinent throughout the study, and 33 healthy comparison subjects that matched the patients for age, gender, and education level were included in the study...
December 7, 2016: Nordic Journal of Psychiatry
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