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https://www.readbyqxmd.com/read/28941407/targeted-neurogenesis-pathway-based-gene-analysis-identifies-adora2a-associated-with-hippocampal-volume-in-mild-cognitive-impairment-and-alzheimer-s-disease
#1
Emrin Horgusluoglu-Moloch, Kwangsik Nho, Shannon L Risacher, Sungeun Kim, Tatiana Foroud, Leslie M Shaw, John Q Trojanowski, Paul S Aisen, Ronald C Petersen, Clifford R Jack, Simon Lovestone, Andrew Simmons, Michael W Weiner, Andrew J Saykin
Alzheimer's disease (AD) patients display hippocampal atrophy, memory impairment, and cognitive decline. New neurons are generated throughout adulthood in 2 regions of the brain implicated in AD, the dentate gyrus of the hippocampus and the subventricular zone of the olfactory bulb. Disruption of this process contributes to neurodegenerative diseases including AD, and many of the molecular players in AD are also modulators of adult neurogenesis. However, the genetic mechanisms underlying adult neurogenesis in AD have been underexplored...
August 18, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28941391/chlorinated-paraffins-leaking-from-hand-blenders-can-lead-to-significant-human-exposures
#2
Bo Yuan, Anna Strid, Per Ola Darnerud, Cynthia A de Wit, Jessica Nyström, Åke Bergman
BACKGROUND: Chlorinated paraffins (CPs, polychlorinated n-alkanes) are versatile, high-production-volume chemicals. A previous study indicated that hand blenders leak CPs into prepared food. OBJECTIVES: (1) to estimate exposure to CPs from hand blender use compared to background CP exposure from diet; (2) to assess the risk from human dietary exposure to CPs from hand blender use; (3) to investigate how hand blenders leak out CPs. METHODS: CPs were analyzed in food market baskets, in cooking oil/water samples (1g oil/100mL water) mixed using 16 different hand blenders, and in dismantled components of the hand blenders...
September 20, 2017: Environment International
https://www.readbyqxmd.com/read/28938628/mir-144-promotes-%C3%AE-amyloid-accumulation-induced-cognitive-impairments-by-targeting-adam10-following-traumatic-brain-injury
#3
Liqian Sun, Manman Zhao, Jingbo Zhang, Aihua Liu, Wenjun Ji, Youxiang Li, Xinjian Yang, Zhongxue Wu
The dysregulation expression of microRNAs (miRNAs) including miR-144, has been widely documented in TBI. However, little is known about the potential roles of miR-144 in the pathogenesis of TBI. In this study, we investigated the potential effects of miR-144 on cognitive function in vivo and in vitro. The results indicated that inhibition of miR-144 conferred a better neurological outcome after TBI in vivo, as evidenced by reduced lesion volume, alleviated brain edema and increased mNSS, of particular importance, improved cognitive deficits...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938491/inhibition-of-fgfr-signaling-partially-rescues-hypophosphatemic-rickets-in-hmwfgf2-tg-male-mice
#4
Liping Xiao, Erxia Du, Collin Homer-Bouthiette, Marja M Hurley
Transgenic mice harboring high molecular weight FGF2 isoforms (HMWTg) in osteoblast lineage cells phenocopy human X-linked hypophosphatemic rickets (XLH) and Hyp murine model of XLH demonstrating increased FGF23/FGF receptor signaling and hypophosphatemic rickets. Since HMWFGF2 was upregulated in bones of Hyp mice and abnormal FGF receptor (FGFR) signaling is important in XLH, HMWTg mice were used to examine the effect of the FGFR inhibitor NVP-BGJ398, now in clinical trials for cancer therapy, on hypophosphatemic rickets...
August 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938388/biological-facet-of-segmental-bone-loss-reconstruction
#5
Theodoros H Tosounidis, Peter V Giannoudis
The management of long bone defects continues to be associated with significant challenges for optimum and timely bone repair. When bone grafting is needed, essential parameters to be addressed include adequate volume, optimum density, and structural capacity as well as potent biological properties. Although the autologous iliac crest bone graft remains the gold standard, its reduced availability and donor site morbidity have made the clinicians to seek for other alternative options. Reamer irrigator aspirator graft with materials used as graft expanders along with inductive molecules and cellular augmentation constitute the current trend for optimum bone regeneration...
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28938321/the-pierre-robin-mandible-is-hypoplastic-and-morphologically-abnormal
#6
Elizabeth G Zellner, Russell R Reid, Derek M Steinbacher
BACKGROUND: For Pierre Robin sequence (PRS) patients, there is incomplete characterization of 3D differences and effects of mandibular distraction osteogenesis (MDO) on the mandible compared to normal controls. METHODS: PRS infants who underwent MDO at 2 craniofacial referral centerals with pre- and postoperative computed tomography (CT) scans were identified. A group of age-matched control patients with CTs were identified in the PACS database. Demographic and perioperative data were recorded...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938317/postoperative-changes-in-isolated-medial-orbital-wall-fractures-based-on-computed-tomography
#7
Soyeon Jung, Jang Won Lee, Chung Hun Kim, Euna Hwang, Hyoseob Lim, Sung Won Jung, Sung Hoon Koh
The treatment has been improved on the accurate reduction of blow-out fracture for many decades. But still, it has been limited to reduce completely when surgeons are approaching by conventional technique. The authors analyzed the postoperative results using computed tomography (CT) scans after conventional open reduction of isolated medial wall fracture. Thirty-seven patients with isolated medial wall fracture were reviewed. All patients underwent preoperative, immediate, and postoperative CT scans. Two surgeons have performed the surgery by conventional open reduction with transcaruncular approach and absorbable mesh insertion...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938312/long-cold-ischemia-times-in-same-hospital-deceased-donor-transplants
#8
Eric Kh Chow, Sandra DiBrito, Xun Luo, Corey Wickliffe, Allan B Massie, Jayme E Locke, Sommer E Gentry, Jacqueline Garonzik-Wang, Dorry L Segev
BACKGROUND: Recent changes in deceased donor organ allocation for livers (Share-35) and kidneys (KAS) have resulted in broader sharing of organs and increased cold ischemia time (CIT). Broader organ sharing however is not the only cause of increased CIT. METHODS: This was a retrospective registry study of CIT in same-hospital liver transplants (SHLT, n=4,347) and kidney transplants (SHKT, n=9,707) between 2004 and 2014. RESULTS: In SHLT, median (IQR) CIT was 5...
September 20, 2017: Transplantation
https://www.readbyqxmd.com/read/28938306/different-clinical-course-and-complications-in-interagency-registry-for-mechanically-assisted-circulatory-support-1-patients-managed-with-or-without-extracorporeal-membrane-oxygenation
#9
Jason J Han, Jennifer Chung, Carol W Chen, Ann C Gaffey, Alex Sotolongo, Christyna Justice, Alyse E Ameer, J Eduardo Rame, Christian Bermudez, Michael A Acker, Pavan Atluri
Extracorporeal membrane oxygenation (ECMO) as a bridge to left ventricular assist device (LVAD) implantation has shown promise in improving end-organ function and optimizing outcomes in some critically ill patients, but the practice remains controversial. Retrospective review of patients who received LVADs from May 2008 to September 2016 at a high-volume, tertiary care cardiovascular center was performed. Subjects were Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) class 1 patients divided into ECMO bridge and non-ECMO bridge cohorts...
September 21, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28938301/are-we-fully-utilizing-the-functionalities-of-modern-operating-room-ventilators
#10
Shujie Liu, Robert M Kacmarek, Jun Oto
PURPOSE OF REVIEW: The modern operating room ventilators have become very sophisticated and many of their features are comparable with those of an ICU ventilator. To fully utilize the functionality of modern operating room ventilators, it is important for clinicians to understand in depth the working principle of these ventilators and their functionalities. RECENT FINDINGS: Piston ventilators have the advantages of delivering accurate tidal volume and certain flow compensation functions...
September 21, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28938276/anesthesia-with-dexmedetomidine-and-low-dose-isoflurane-increases-solute-transport-via-the-glymphatic-pathway-in-rat-brain-when-compared-with-high-dose-isoflurane
#11
Helene Benveniste, Hedok Lee, Fengfei Ding, Qian Sun, Ehab Al-Bizri, Rany Makaryus, Stephen Probst, Maiken Nedergaard, Elliot A Stein, Hanbing Lu
BACKGROUND: The glymphatic pathway transports cerebrospinal fluid through the brain, thereby facilitating waste removal. A unique aspect of this pathway is that its function depends on the state of consciousness of the brain and is associated with norepinephrine activity. A current view is that all anesthetics will increase glymphatic transport by inducing unconsciousness. This view implies that the effect of anesthetics on glymphatic transport should be independent of their mechanism of action, as long as they induce unconsciousness...
September 22, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28938197/a-collagen-membrane-containing-osteogenic-protein-1-facilitates-bone-regeneration-in-a-rat-mandibular-bone-defect
#12
Manami Ozaki, Tadahiro Takayama, Takanobu Yamamoto, Yasumasa Ozawa, Mayu Nagao, Natsuko Tanabe, Akira Nakajima, Naoto Suzuki, Masao Maeno, Seiichi Yamano, Shuichi Sato
OBJECTIVES: Osteogenic protein-1 (OP-1) has shown osteoinductive activities and is useful for clinical treatments, including bone regeneration. Regenerative procedures using a bioabsorbable collagen membrane (BCM) are well established in periodontal and implant dentistry. We evaluated the subsequent effects of the BCM in combination with OP-1 on bone regeneration in a rat mandibular circular critical-sized bone defect in vivo. DESIGN: We used 8 rats that received surgery in both sides of the mandible, and created the total 16 defects which were divided into 4 groups: Group 1; no treatment, as a control, Group 2; BCM alone, Group 3; BCM containing low dose 0...
September 8, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28938195/understanding-public-perception-of-hydraulic-fracturing-a-case-study-in-spain
#13
D Costa, V Pereira, J Góis, A Danko, A Fiúza
Public acceptance is crucial for the implementation of energy technologies. Hydraulic fracturing is a technology widely used in the USA for natural gas production from shale formations, but currently finds strong public opposition worldwide, especially in Europe. Shale gas exploitation and exploration have the potential to significantly reduce import dependency in several countries, including Spain. To better understand public opinion on this issue, this article reports a survey targeting both the entire Spanish population and the inhabitants of the province of Burgos, the location where shale gas exploration permits have already been issued...
September 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28938171/behavior-of-radioactive-cesium-during-incineration-of-radioactively-contaminated-wastes-from-decontamination-activities-in-fukushima
#14
Hiroshi Fujiwara, Hidetoshi Kuramochi, Kazutaka Nomura, Tomoharu Maeseto, Masahiro Osako
Large volumes of decontamination wastes (DW) generated by off-site decontamination activities in Fukushima Prefecture have been incinerated since 2015. The behavior of radioactive cesium during incineration of DW was investigated at a working incineration plant. The incineration discharged bottom ash (BA) and fly ash (FA) with similar levels of radiocesium, and the leachability of the radiocesium from both types of ash was very low (<1%). These results are significantly different from those obtained for the incineration of contaminated municipal solid waste (CMSW) reported in earlier studies...
September 18, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28938160/nilotinib-enhances-tumor-angiogenesis-and-counteracts-vegfr2-blockade-in-an-orthotopic-breast-cancer-xenograft-model-with-desmoplastic-response
#15
Sara Zafarnia, Jessica Bzyl-Ibach, Igor Spivak, Yongping Li, Susanne Koletnik, Dennis Doleschel, Anne Rix, Sibylle Pochon, Isabelle Tardy, Seena Koyadan, Marc van Zandvoort, Moritz Palmowski, Fabian Kiessling, Wiltrud Lederle
Vascular endothelial growth factor (VEGF)/VEGF receptor (VEGFR)-targeted therapies predominantly affect nascent, immature tumor vessels. Since platelet-derived growth factor receptor (PDGFR) blockade inhibits vessel maturation and thus increases the amount of immature tumor vessels, we evaluated whether the combined PDGFR inhibition by nilotinib and VEGFR2 blockade by DC101 has synergistic therapy effects in a desmoplastic breast cancer xenograft model. In this context, besides immunohistological evaluation, molecular ultrasound imaging with BR55, the clinically used VEGFR2-targeted microbubbles, was applied to monitor VEGFR2-positive vessels noninvasively and to assess the therapy effects on tumor angiogenesis...
September 19, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28938084/the-evolving-understanding-of-dopamine-neurons-in-the-substantia-nigra-and-ventral-tegmental-area
#16
Stephanie C Gantz, Christopher P Ford, Hitoshi Morikawa, John T Williams
In recent years, the population of neurons in the ventral tegmental area (VTA) and substantia nigra (SN) has been examined at multiple levels. The results indicate that the projections, neurochemistry, and receptor and ion channel expression in this cell population vary widely. This review centers on the intrinsic properties and synaptic regulation that control the activity of dopamine neurons. Although all dopamine neurons fire action potentials in a pacemaker pattern in the absence of synaptic input, the intrinsic properties that underlie this activity differ considerably...
September 22, 2017: Annual Review of Physiology
https://www.readbyqxmd.com/read/28938083/how-many-species-of-insects-and-other-terrestrial-arthropods-are-there-on-earth
#17
Nigel E Stork
In the last decade, new methods of estimating global species richness have been developed and existing ones improved through the use of more appropriate statistical tools and new data. Taking the mean of most of these new estimates indicates that globally there are approximately 1.5 million, 5.5 million, and 7 million species of beetles, insects, and terrestrial arthropods, respectively. Previous estimates of 30 million species or more based on the host specificity of insects to plants now seem extremely unlikely...
September 22, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/28938082/pseudacteon-phorid-flies-host-specificity-and-impacts-on-solenopsis-fire-ants
#18
Li Chen, Henry Y Fadamiro
Human commerce has resulted in the spread of the imported fire ants, Solenopsis species, worldwide. Six species of parasitic Pseudacteon phorid flies that are highly host specific to the Solenopsis saevissima complex of Solenopsis fire ants have been successfully released in the southern United States. The presence of Pseudacteon phorid flies, in addition to having direct mortality effects on their host ants, modifies foraging behavior and disrupts interspecific competition between host species and other ant species in the community...
September 22, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/28938081/sleep-in-insects
#19
Charlotte Helfrich-Förster
Sleep is essential for proper brain function in mammals and insects. During sleep, animals are disconnected from the external world; they show high arousal thresholds and changed brain activity. Sleep deprivation results in a sleep rebound. Research using the fruit fly, Drosophila melanogaster, has helped us understand the genetic and neuronal control of sleep. Genes involved in sleep control code for ion channels, factors influencing neurotransmission and neuromodulation, and proteins involved in the circadian clock...
September 22, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/28938079/comparing-climate-sensitivity-past-and-present
#20
Eelco J Rohling, Gianluca Marino, Gavin L Foster, Philip A Goodwin, Anna S von der Heydt, Peter Köhler
Climate sensitivity represents the global mean temperature change caused by changes in the radiative balance of climate; it is studied for both present/future (actuo) and past (paleo) climate variations, with the former based on instrumental records and/or various types of model simulations. Paleo-estimates are often considered informative for assessments of actuo-climate change caused by anthropogenic greenhouse forcing, but this utility remains debated because of concerns about the impacts of uncertainties, assumptions, and incomplete knowledge about controlling mechanisms in the dynamic climate system, with its multiple interacting feedbacks and their potential dependence on the climate background state...
September 22, 2017: Annual Review of Marine Science
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