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https://www.readbyqxmd.com/read/28533563/why-do-the-boreal-forest-ecosystems-of-northwestern-europe-differ-from-those-of-western-north-america
#1
Rudy Boonstra, Harry P Andreassen, Stan Boutin, Jan Hušek, Rolf A Ims, Charles J Krebs, Christina Skarpe, Petter Wabakken
The boreal forest is one of the largest terrestrial biomes on Earth. Conifers normally dominate the tree layer across the biome, but other aspects of ecosystem structure and dynamics vary geographically. The cause of the conspicuous differences in the understory vegetation and the herbivore-predator cycles between northwestern Europe and western North America presents an enigma. Ericaceous dwarf shrubs and 3- to 4-year vole-mustelid cycles characterize the European boreal forests, whereas tall deciduous shrubs and 10-year snowshoe hare-lynx cycles characterize the North American ones...
September 1, 2016: Bioscience
https://www.readbyqxmd.com/read/28529452/estradiol-suppresses-tlr4-triggered-apoptosis-of-decidual-stromal-cells-and-drives-an-anti-inflammatory-th2-shift-by-activating-sgk1
#2
Yiyun Lou, Minhao Hu, Qijing Wang, Mu Yuan, Ning Wang, Fang Le, Lejun Li, Shisi Huang, Liya Wang, Xiangrong Xu, Fan Jin
A pro-inflammatory cytokine profile at the feto-maternal interface may predispose immune maladaptation notably in early miscarriages. We investigated the involvement of estradiol (E2)-activated serum-glucocorticoid regulated kinase 1 (SGK1) in preserving the tolerogenic and pro-survival intrauterine microenvironment beneficial to gestation maintenance. Decidual SGK1 was down-regulated in early miscarriage, consistent with the lower serum E2 concentration seen in pregnancy loss. Lipopolysaccharide (LPS)/Toll-like receptors 4 (TLR4) signaling induced apoptosis and the pro-inflammatory T helper type (TH) 1 response of decidual stromal cells (DSCs) were associated with miscarriage...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28526872/seasonal-soil-microbial-responses-are-limited-to-changes-in-functionality-at-two-alpine-forest-sites-differing-in-altitude-and-vegetation
#3
José A Siles, Rosa Margesin
The study of soil microbial responses to environmental changes is useful to improve simulation models and mitigation strategies for climate change. We here investigated two Alpine forest sites (deciduous forest vs. coniferous forest) situated at different altitudes (altitudinal effect) in spring and autumn (seasonal effect) regarding: (i) bacterial and fungal abundances (qPCR); (ii) diversity and structure of bacterial and fungal communities (amplicon sequencing); and (iii) diversity and composition of microbial functional gene community (Geochip 5...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28523092/management-of-a-life-threatening-bleeding-following-extraction-of-deciduous-second-molar-related-to-a-capillary-haemangioma
#4
REVIEW
Amr Amin Ghanem, Yasser Nabil El Hadidi
Various forms of vascular lesion affect the head and neck region. The head and neck vascular lesions are classified into neoplasms and malformations. Neoplasm presents either as hemangioma or lymphangioma; neoplasm usually presents in young age compared with vascular malformation. A 9-year-old female patient presented to the outpatient clinic referred from the department of pedodontics after extraction of a right mandibular second deciduous molar. Extraction was done by dental GP in outpatient clinic. Massive bleeding followed the extraction...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28522271/medroxyprogesterone-acetate-drives-m2-macrophage-differentiation-toward-a-phenotype-of-decidual-macrophage
#5
Yung-Chieh Tsai, Joseph T Tseng, Chia-Yih Wang, Mei-Tsz Su, Jyun-Yuan Huang, Pao-Lin Kuo
M1 macrophage differentiation plays a crucial role in enhanced inflammation during pregnancy, which may lead to pregnancy complications. Therefore, modulation of macrophage differentiation toward the M2 phenotype is desirable to ensure a successful pregnancy. Medroxyprogesterone acetate (MPA) is a potent progestin with an anti-inflammatory property, but its effect on macrophage differentiation is unknown. This study aimed to examine whether MPA can induce an M2 macrophage differentiation by using the human monocytes cell line THP-1 or primary monocytes...
May 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28521634/chorionic-histiocytic-hyperplasia-is-associated-with-chronic-inflammatory-lesions-in-the-placenta
#6
Philip J Katzman, Leon A Metlay, Loralee A McMahon, Li LiQiong, Bin Zhang
Background Chorionic histiocytic hyperplasia (CHH) is a cellular proliferation at the base of the chorion that was identified by the authors in examining placentas for chronic chorioamnionitis (CC). This study is a retrospective review of cases diagnosed with CHH, describing its incidence alone and with associated lesions, and the immunophenotype of lesional cells. Design In this retrospective study, a laboratory information system search over a 34-month period using the key phrase "chorionic stromal" was performed...
June 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28521387/structural-and-functional-recovery-of-macroinvertebrate-communities-and-leaf-litter-decomposition-after-a-marked-drought-does-vegetation-type-matter
#7
Silvia Monroy, Aingeru Martínez, Naiara López-Rojo, Ana Victoria Pérez-Calpe, Ana Basaguren, Jesús Pozo
Climate change and anthropogenic disturbances are expected to lead to more intense and frequent droughts, with potentially severe effects on structure and function of perennial temperate streams. However, more information is required on whether streams flowing through basins already affected by exotic plantations will respond to droughts in the same way as streams under native forests. The recolonisation dynamics of benthic macroinvertebrate communities and leaf litter decomposition rates were examined in nine streams of oceanic-temperate climate that differed in catchment vegetation (three streams draining native deciduous forest, three in pine plantations and three in eucalypt plantations) after a marked drought...
May 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28520923/decrease-in-expression-of-hoxa10-in-the-decidua-after-embryo-implantation-promotes-trophoblast-invasion
#8
Geeta Godbole, Pankaj Suman, Ankita Malik, Mosami Galvankar, Niraj Joshi, Asgerally Fazleabas, Satish Kumar Gupta, Deepak Modi
A central step towards successful pregnancy involves invasion of the trophoblast cells into the decidua for placentation. Herein, we show that in the human and baboon decidua, HOXA10 expression is downregulated post-implantation and this reduction is most prominent in the decidual cells juxtaposed to the invading placental villi. Intriguingly, the supernatants derived from HOXA10 depleted human decidual cells increase the invasiveness of the trophoblast cell lines ACH-3P and JEG3 in vitro; this increase is due to higher expression and activity of matrix metalloproteases (MMPs) and reduced expression of tissue inhibitors of MMPs (TIMPs) in both the cell lines...
May 17, 2017: Endocrinology
https://www.readbyqxmd.com/read/28515910/biocompatibility-of-biological-material-polylactic-acid-with-stem-cells-from-human-exfoliated-deciduous-teeth
#9
Xi Wang, Guanghui Li, Yiming Liu, Weiwei Yu, Qiang Sun
To investigate the biocompatibility of the biomaterial, polylactic acid (PLA) with stem cells from human exfoliated deciduous teeth (SHED) and its induction of mineralization as a type of scaffold material. To determine the impacts of biomaterial PLA on proliferation and mineralization of SHED, the expression of surface molecules of SHED isolated and cultured in vitro was detected by flow cytometry. In addition, cell proliferation was measured using MTT and Edu assays, and the evaluation of mineralized differentiation was performed using Alizarin Red S staining...
May 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28514700/a-comparative-in-situ-decomposition-study-using-still-born-piglets-and-leaf-litter-from-a-deciduous-forest
#10
Ayodeji O Olakanye, Andrew Nelson, T Komang Ralebitso-Senior
A cadaver and dead plant organic matter, or litter, are rich energy sources that undergo a complex decomposition process, which impact the surrounding environmental microbiota. Advances in molecular microbiology techniques, with study of the 16S RNA genes, in particular, have highlighted the application of forensic ecogenomics in addressing key knowledge gaps. To investigate subsurface microbiome shifts as a novel tool to establish "postmortem microbial clock" and augment postmortem interval (PMI) and time-since-burial estimations, an in situ study with triplicate underground burials of piglets as human taphonomic proxies and Quercus robur leaf litter was monitored for 270 days...
May 6, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28507070/limited-colonization-undermined-by-inadequate-early-immune-responses-define-the-dynamics-of-decidual-listeriosis
#11
Gabrielle Rizzuto, Elisa Tagliani, Priyanka Manandhar, Adrian Erlebacher, Anna I Bakardjiev
The bacterial pathogen Listeria monocytogenes causes a food-borne systemic disease in pregnant women that can lead to preterm labor, stillbirth, or severe neonatal disease. Colonization of the maternal decidua appears to be an initial step in the maternal component of the disease as well as bacterial transmission to the placenta and fetus. Host-pathogen interactions in the decidua during this early stage of infection remain poorly understood. Here, we assessed the dynamics of L. monocytogenes infection in primary human decidual organ cultures and in the murine decidua in vivo...
May 15, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28506493/strategies-for-investigating-the-maternal-fetal-interface-in-the-first-trimester-of-pregnancy-what-can-we-learn-about-pathology
#12
Judith E Cartwright, Guy StJ Whitley
The pathologies of the pregnancy complications pre-eclampsia (PE) and fetal growth restriction (FGR) are established in the first trimester of human pregnancy. In a normal pregnancy, decidual spiral arteries are transformed into wide diameter, non-vasoactive vessels capable of meeting the increased demands of the developing fetus for nutrients and oxygen. Disruption of this transformation is associated with PE and FGR. Very little is known of how these first trimester changes are regulated normally and even less is known about how they are compromised in complicated pregnancies...
May 6, 2017: Placenta
https://www.readbyqxmd.com/read/28505882/stemflow-induced-spatial-heterogeneity-of-radiocesium-concentrations-and-stocks-in-the-soil-of-a-broadleaved-deciduous-forest
#13
Naohiro Imamura, Delphis F Levia, Jumpei Toriyama, Masahiro Kobayashi, Kazuki Nanko
The transport of radiocesium from the canopy and quantification of the spatial distribution of radiocesium in the soil of konara oak forests are important to better understand the variability of (137)Cs stocks in the soil between proximal and distal stem areas as well as fine-scale variations around the tree trunk. Moreover, a better understanding of fine-scale spatial variabilities of (137)Cs concentrations and stocks will provide insights for optimizing soil sampling strategies to provide a more robust estimation of contamination at the stand scale...
May 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28504453/reduced-productivity-of-culex-pipiens-and-cx-restuans-diptera-culicidae-mosquitoes-in-parking-area-catch-basins-in-the-northeast-chicago-metropolitan-area
#14
Justin E Harbison, Bridget Hulsebosch, Jennifer Buczek, Amy Runde, Roger Nasci
From June to September, 2016, 100 catch basins in eight parking areas were monitored weekly for the presence of mosquito pupae in the operational area of the North Shore Mosquito Abatement District (NSMAD) located just north of Chicago, IL, U.S.A. Weekly results from these basins were compared to weekly samples taken from residential street catch basins, the most common type of catch basin treated seasonally by the NSMAD with larvicides. Over the 17 study weeks, residential street basins had a mean rate of productivity (pupae per basin-visit) 12 times that of parking area catch basins...
June 2017: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/28504447/tick-infestation-of-small-mammals-in-an-english-woodland
#15
Benjamin Cull, Alexander G C Vaux, Lisa J Ottowell, Emma L Gillingham, Jolyon M Medlock
Tick infestations on small mammals were studied from April to November, 2010, in deciduous woodland in southern England in order to determine whether co-infestations with tick stages occurred on small mammals, a key requirement for endemic transmission of tick-borne encephalitis virus (TBEV). A total of 217 small mammals was trapped over 1,760 trap nights. Yellow-necked mice (Apodemus flavicollis) made up the majority (52.5%) of animals, followed by wood mice (A. sylvaticus) 35.5% and bank voles (Myodes glareolus) 12%...
June 2017: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/28503940/matrix-solid-phase-dispersion-as-a-tool-for-phytochemical-and-bioactivities-characterisation-crataegus-oxyacantha-l-_a-case-study
#16
Wassila Benabderrahmane, Marta Lores, Juan Pablo Lamas, Samir Benayache
The use of a matrix solid-phase dispersion (MSPD) process to extract polyphenols from hawthorn (Crataegus oxyacantha L.) a deciduous shrub with an expected rich phytochemical profile, has been evaluated. MSPD extracts of fruits and leaves have an outstanding content of polyphenols, although the particular phenolic profile is solvent dependent. The extracts were analysed by HPLC-DAD for the accurate identification of the major bioactive polyphenols, some of which have never been described for this species. MSPD has proven to be a good alternative to the classic methods of obtaining natural extracts, fast and with low consumption of organic solvents, therefore, environmentally friendly...
May 15, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28503784/aryl-hydrocarbon-receptor-and-unexplained-miscarriage
#17
Hongjie Fan, Xiaoling Su, Binlie Yang, Aimin Zhao
AIM: The aim of this study was to carry out a preliminary investigation of the expression of aryl hydrocarbon receptor (AhR) in decidua and villus and the relationship between AhR and unexplained miscarriage. METHODS: The expression of AhR mRNA and protein from decidua and villus were measured using real-time reverse transcription-polymerase chain reaction, western blot and immunohistochemistry in 34 patients with unexplained miscarriage (miscarriage group) and 38 women with normal early pregnancy (control group)...
May 15, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28502905/inhibition-of-proinflammatory-mediators-by-coumaroyl-lupendioic-acid-a-new-lupane-type-triterpene-from-careya-arborea-on-inflammation-induced-animal-model
#18
Rayhana Begum, Manjur Ali Sheliya, Showkat R Mir, Ekta Singh, Manju Sharma
ETHNOPHARMACOLOGICAL RELEVANCE: Careya arborea Roxb. (Lecythidaceae) is a large tree found throughout India in deciduous forests and grasslands. C. arborea is traditionally used in tumors, inflammation, anthelmintic, bronchitis, epileptic fits, astringents, antidote to snake-venom, skin disease, diarrhea, dysentery with bloody stools, dyspepsia, ulcer, tooth ache, and ear pain. AIM OF THE STUDY: In our previous work, the methanolic extract of Careya arborea stem bark showed significant anti-inflammatory activity...
May 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28501633/atmospheric-mercury-deposition-to-forests-in-the-eastern-usa
#19
Martin R Risch, John F DeWild, David A Gay, Leiming Zhang, Elizabeth W Boyer, David P Krabbenhoft
Atmospheric mercury (Hg) deposition to forests is important because half of the land cover in the eastern USA is forest. Mercury was measured in autumn litterfall and weekly precipitation samples at a total of 27 National Atmospheric Deposition Program (NADP) monitoring sites in deciduous and mixed deciduous-coniferous forests in 16 states in the eastern USA during 2007-2014. These simultaneous, uniform, repeated, annual measurements of forest Hg include the broadest area and longest time frame to date. The autumn litterfall-Hg concentrations and litterfall mass at the study sites each year were combined with annual precipitation-Hg data...
May 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28500952/isolation-and-characterization-of-lymphoid-enhancer-factor-1-positive-deciduous-dental-pulp-stem-like-cells-after-transfection-with-a-piggybac-vector-containing-lef1-promoter-driven-selection-markers
#20
Tomoya Murakami, Issei Saitoh, Masahiro Sato, Emi Inada, Miki Soda, Masataka Oda, Hisanori Domon, Yoko Iwase, Tadashi Sawami, Kazunari Matsueda, Yutaka Terao, Hayato Ohshima, Hirofumi Noguchi, Haruaki Hayasaki
OBJECTIVE: Lymphoid enhancer-binding factor-1 (LEF1) is a 48-kD nuclear protein that is expressed in pre-B and T cells. LEF1 is also an important member of the Wnt/β-catenin signaling pathway that plays important roles in the self-renewal and differentiation of embryonic stem cells. We speculated that LEF1 might function in the stem cells from human exfoliated deciduous teeth (SHED). In this study, we attempted to isolate such LEF1-positive cells from human deciduous dental pulp cells (HDDPCs) by genetic engineering technology, using the human LEF1 promoter...
May 7, 2017: Archives of Oral Biology
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