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https://www.readbyqxmd.com/read/29458187/mri-techniques-to-measure-arterial-and-venous-cerebral-blood-volume
#1
Jun Hua, Peiying Liu, Tae Kim, Manus Donahue, Swati Rane, J Jean Chen, Qin Qin, Seong-Gi Kim
The measurement of cerebral blood volume (CBV) has been the topic of numerous neuroimaging studies. To date, however, most in vivo imaging approaches can only measure CBV summed over all types of blood vessels, including arterial, capillary and venous vessels in the microvasculature (i.e. total CBV or CBVtot). As different types of blood vessels have intrinsically different anatomy, function and physiology, the ability to quantify CBV in different segments of the microvascular tree may furnish information that is not obtainable from CBVtot, and may provide a more sensitive and specific measure for the underlying physiology...
February 16, 2018: NeuroImage
https://www.readbyqxmd.com/read/29458147/sessein-and-isosessein-with-anti-inflammatory-antibacterial-and-antioxidant-activity-isolated-from-salvia-sessei-benth
#2
Abraham Gómez-Rivera, Manasés González-Cortazar, Maribel Herrera-Ruíz, Alejandro Zamilpa, Verónica Rodríguez-López
ETHNOPHARMACOLOGICAL RELEVANCE: Salvia sessei Benth, popularly known as "pipilolxochitl" or "sabanito", is a plant utilized in Mexico in traditional medicine for the treatment of erysipela. To date, only one report, to our knowledge, has been found in which a royleanone-type diterpene of the aerial parts of the species was isolated but, again to our knowledge, studies have not been conducted on the pharmacological activity of extracts and compounds isolated from this plant...
February 16, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29458013/ago2-rna-immunoprecipitation-reveals-distinct-mirna-targetomes-of-primary-burkitt-lymphoma-tumors-and-normal-b-cells
#3
Agnieszka Dzikiewicz-Krawczyk, Arjan Diepstra, Bea Rutgers, Gertrud Kortman, Debora de Jong, Jasper Koerts, Marian Bulthuis, Tineke van der Sluis, Annika Seitz, Lydia Visser, Klaas Kok, Joost Kluiver, Anke van den Berg
MicroRNAs (miRNAs) are small noncoding RNAs involved in the posttranscriptional regulation of gene expression. Deregulated miRNA levels have been linked to Burkitt lymphoma (BL) pathogenesis. To date, the number of known pathogenesis-related miRNA-target gene interactions is limited. Here, we determined for the first time the miRNA targetomes of primary BL tumors and normal B cells. AGO2-RNA immunoprecipitation (AGO2-RIP) of two frozen diagnostic BL tissue samples and three CD19+ B-cell samples isolated from routinely removed tonsils revealed distinct miRNA targetomes of BL and normal B cells...
February 16, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29457914/estimating-road-traffic-injuries-in-jinja-district-uganda-using-the-capture-recapture-method
#4
Joseph Magoola, Olive Kobusingye, Abdulgafoor M Bachani, Nazarius Mbona Tumwesigye, Derrick Kimuli, Nino Paichadze
Road traffic injuries (RTIs) are commonly under-reported in low-and-medium-income countries. This study aimed to estimate the number of RTIs and determine the magnitude of under-reporting by traffic police and hospital registries. A two-source capture-recapture method was applied to RTI data from police and hospital registries. Seven matching variables; sex of the injured, date, place, time, day of crash and road user type were used to get the matched cases. Police independently reported 46 RTIs and the hospitals reported 206 RTIs...
February 19, 2018: International Journal of Injury Control and Safety Promotion
https://www.readbyqxmd.com/read/29457854/metal-cluster-models-for-heterogeneous-catalysts-a-matrix-isolation-perspective
#5
Hans-Jörg Himmel, Olaf Hübner
Metal cluster models are of high relevance for establishing new mechanistic concepts for heterogeneous catalysis. The high reactivity and particular selectivity of metal clusters is caused by the wealth of low-lying electronically excited states that are often thermally populated. Thereby the metal clusters are flexible with regard to its electronic structure and can adjust their states to be appropriate for the reaction with a particular substrate. The matrix isolation technique is ideally suited for studying excited state reactivity...
February 19, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29457794/recon3d-enables-a-three-dimensional-view-of-gene-variation-in-human-metabolism
#6
Elizabeth Brunk, Swagatika Sahoo, Daniel C Zielinski, Ali Altunkaya, Andreas Dräger, Nathan Mih, Francesco Gatto, Avlant Nilsson, German Andres Preciat Gonzalez, Maike Kathrin Aurich, Andreas Prlić, Anand Sastry, Anna D Danielsdottir, Almut Heinken, Alberto Noronha, Peter W Rose, Stephen K Burley, Ronan M T Fleming, Jens Nielsen, Ines Thiele, Bernhard O Palsson
Genome-scale network reconstructions have helped uncover the molecular basis of metabolism. Here we present Recon3D, a computational resource that includes three-dimensional (3D) metabolite and protein structure data and enables integrated analyses of metabolic functions in humans. We use Recon3D to functionally characterize mutations associated with disease, and identify metabolic response signatures that are caused by exposure to certain drugs. Recon3D represents the most comprehensive human metabolic network model to date, accounting for 3,288 open reading frames (representing 17% of functionally annotated human genes), 13,543 metabolic reactions involving 4,140 unique metabolites, and 12,890 protein structures...
February 19, 2018: Nature Biotechnology
https://www.readbyqxmd.com/read/29457563/novel-use-of-the-cochlear-%C3%A2-hybrid-ci24reh-cochlear-implant
#7
Yahya Atiya, Mohamed Razwi Ahmed, Dani Schlesinger-Michelow
Cochlear implantation is becoming more widespread. From its early days to date, huge strides have been made in the technology and surgical technique. However, one challenge remains: implanting malformed or abnormal cochleae. Even more challenging is a cochlea that appears normal at first glance, but is not. We present a case of a child with chondrodysplasia punctata, who had apparently morphologically normal inner ears, but with one major obstacle: the cochlea was smaller than normal in all dimensions. To the best of our knowledge, this is the first case described, and the solution is a novel one as well...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29457523/natural-products-for-controlling-hyperlipidemia-review
#8
Walid Hamdy El-Tantawy, Abeer Temraz
Hyperlipidemia is an abnormality of lipid metabolism, characterized by an elevation of total cholesterol, triglyceride, and low density lipoprotein-cholesterol, and/or a decreasing of high density lipoprotein cholesterol in circulating levels. Hyperlipidemia has been ranked as one of the greatest risk factors contributing to prevalence and severity of coronary heart diseases. Hyperlipidemia-associated lipid disorders are considered the cause of atherosclerotic cardiovascular disease. There has been a growing interest in natural products and their role in the maintenance and improvement of health and wellness...
February 19, 2018: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29457481/selection-and-use-of-health-services-for-infants-needs-by-indigenous-mothers-in-canada-integrative-literature-review
#9
A Wright, O Wahoush, M Ballantyne, C Gabel, S M Jack
In Canada, Indigenous infants experience significant health disparities when compared to non-Indigenous infants, including significantly higher rates of birth complications and infant mortality rates. The use of primary health care is one way to improve health outcomes; however, Indigenous children may use health services less often than non-Indigenous children. To improve health outcomes within this growing population, it is essential to understand how caregivers, defined here as mothers, select and use health services in Canada...
January 1, 2018: Canadian Journal of Nursing Research, Revue Canadienne de Recherche en Sciences Infirmières
https://www.readbyqxmd.com/read/29457414/-clinical-research-of-popliteal-cyst-excision-combined-with-debridement-of-the-knee-under-arthroscopy-with-local-anesthesia
#10
Ji Li, Zhong-Li Li, Hao Zhang, Ke-Tao Wang, Yi-Meng Yang, Xiang-Zheng Su
OBJECTIVE: To evaluate the clinical effects of popliteal cyst excision combined with debridement of the knee under arthroscopy with local anesthesia. METHODS: From February 2009 to August 2014, 52 patients with popliteal cysts were treated in our hospital, including 34 males and 18 females with an average age of 43.6 years old ranging from 14 to 62 years old; 29 cases were on the right knee and 23 on the left knee. Preoperative diagnosis was performed according to MRI findings and to determine whether other knee disorders were associated with the disease, 52 patients were diagnosed as popliteal cyst before operation; 23 cases of simple meniscus injury or cartilage injury, 18 cases of osteoarthritis, 7 cases of cruciate ligament injury, 2 cases of gouty arthritis, 1 case of rheumatoid arthritis, 1 case of pigmented villonodular arthritis...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457326/associations-between-adolescent-risk-for-restrictive-disordered-eating-and-long-term-outcomes-related-to-somatic-symptoms-body-mass-index-and-poor-well-being
#11
Evelina Landstedt, Anne Hammarström, A Kate Fairweather-Schmidt, Tracey Wade
OBJECTIVE: To date, no longitudinal, community-based studies have examined the association between disordered eating emerging in adolescence and long-term physical well-being. This study sought to explore the longitudinal associations between risk for restrictive disordered eating (DE-R; those not presenting with binge-purge symptoms) in adolescence and trajectories of functional somatic symptoms (FSS) and body mass index (BMI), and several indicators of poor physical well-being across early- to mid-adulthood, including medication, number of doctor visits, and sick leave...
February 18, 2018: British Journal of Health Psychology
https://www.readbyqxmd.com/read/29457308/single-carbon-fibers-with-a-macroscopic-thickness-3d-highly-porous-carbon-nanotube-coating
#12
Mingchu Zou, Wenqi Zhao, Huaisheng Wu, Hui Zhang, Wenjing Xu, Liusi Yang, Shiting Wu, Yunsong Wang, Yijun Chen, Lu Xu, Anyuan Cao
Carbon fiber (CF) grafted with a layer of carbon nanotubes (CNTs) plays an important role in composite materials and other fields; to date, the applications of CNTs@CF multiscale fibers are severely hindered by the limited amount of CNTs grafted on individual CFs and the weak interfacial binding force. Here, monolithic CNTs@CF fibers consisting of a 3D highly porous CNT sponge layer with macroscopic-thickness (up to several millimeters), which is directly grown on a single CF, are fabricated. Mechanical tests reveal high sponge-CF interfacial strength owing to the presence of a thin transitional layer, which completely inhibits the CF slippage from the matrix upon fracture in CNTs@CF fiber-epoxy composites...
February 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29457131/keeping-an-eye-on-bardet-biedl-syndrome-a-comprehensive-review-of-the-role-of-bardet-biedl-syndrome-genes-in-the-eye
#13
Katie Weihbrecht, Wesley A Goar, Thomas Pak, Janelle E Garrison, Adam P DeLuca, Edwin M Stone, Todd E Scheetz, Val C Sheffield
Upwards of 90% of individuals with Bardet-Biedl syndrome (BBS) display rod-cone dystrophy with early macular involvement. BBS is an autosomal recessive, genetically heterogeneous, pleiotropic ciliopathy for which 21 causative genes have been discovered to date. In addition to retinal degeneration, the cardinal features of BBS include obesity, cognitive impairment, renal anomalies, polydactyly, and hypogonadism. Here, we review the genes, proteins, and protein complexes involved in BBS and the BBS model organisms available for the study of retinal degeneration...
September 2017: Medical Research Archives
https://www.readbyqxmd.com/read/29457118/preoperative-elevated-fdp-may-predict-severe-intraoperative-hypotension-after-dural-opening-during-decompressive-craniectomy-of-traumatic-brain-injury
#14
Kei Kamiutsuri, Naoki Tominaga, Shunji Kobayashi
Purpose: Coagulation disorder and intraoperative hypotension are representative complications of traumatic brain injury which cause worse perioperative outcome. The aim of this study was to survey the relation of coagulation disorder and intraoperative hypotension (IH) during decompressive craniectomy. Method: Patients who underwent emergency decompressive craniectomy due to traumatic brain injury were retrospectively surveyed. The relation between preoperative coagulation date and intraoperative hypotension (systolic blood pressure < 60 mmHg after dural opening) was analyzed...
2018: JA Clin Rep
https://www.readbyqxmd.com/read/29456894/the-state-of-oa-a-large-scale-analysis-of-the-prevalence-and-impact-of-open-access-articles
#15
Heather Piwowar, Jason Priem, Vincent Larivière, Juan Pablo Alperin, Lisa Matthias, Bree Norlander, Ashley Farley, Jevin West, Stefanie Haustein
Despite growing interest in Open Access (OA) to scholarly literature, there is an unmet need for large-scale, up-to-date, and reproducible studies assessing the prevalence and characteristics of OA. We address this need using oaDOI, an open online service that determines OA status for 67 million articles. We use three samples, each of 100,000 articles, to investigate OA in three populations: (1) all journal articles assigned a Crossref DOI, (2) recent journal articles indexed in Web of Science, and (3) articles viewed by users of Unpaywall, an open-source browser extension that lets users find OA articles using oaDOI...
2018: PeerJ
https://www.readbyqxmd.com/read/29456891/frequency-and-developmental-timing-of-linear-enamel-hypoplasia-defects-in-early-archaic-texan-hunter-gatherers
#16
J Colette Berbesque, Kara C Hoover
Digital photographs taken under controlled conditions were used to examine the incidence of linear enamel hypoplasia defects (LEHs) in burials from the Buckeye Knoll archaeological site (41VT98 Victoria county, Texas), which spans the Early to Late Archaic Period (ca. 2,500-6,500 BP uncorrected radiocarbon). The majority (68 of 74 burials) date to the Texas Early Archaic, including one extremely early burial dated to 8,500 BP. The photogrammetric data collection method also results in an archive for Buckeye Knoll, a significant rare Archaic period collection that has been repatriated and reinterred...
2018: PeerJ
https://www.readbyqxmd.com/read/29456885/genus-level-phylogeny-of-cephalopods-using-molecular-markers-current-status-and-problematic-areas
#17
Gustavo Sanchez, Davin H E Setiamarga, Surangkana Tuanapaya, Kittichai Tongtherm, Inger E Winkelmann, Hannah Schmidbaur, Tetsuya Umino, Caroline Albertin, Louise Allcock, Catalina Perales-Raya, Ian Gleadall, Jan M Strugnell, Oleg Simakov, Jaruwat Nabhitabhata
Comprising more than 800 extant species, the class Cephalopoda (octopuses, squid, cuttlefish, and nautiluses) is a fascinating group of marine conchiferan mollusks. Recently, the first cephalopod genome (of Octopus bimaculoides ) was published, providing a genomic framework, which will enable more detailed investigations of cephalopod characteristics, including developmental, morphological, and behavioural traits. Meanwhile, a robust phylogeny of the members of the subclass Coleoidea (octopuses, squid, cuttlefishes) is crucial for comparative and evolutionary studies aiming to investigate the group's traits and innovations, but such a phylogeny has proven very challenging to obtain...
2018: PeerJ
https://www.readbyqxmd.com/read/29456865/a-real-world-example-of-coverage-with-evidence-development-in-australia-ipilimumab-for-the-treatment-of-metastatic-melanoma
#18
Hansoo Kim, Samantha Comey, Karl Hausler, Greg Cook
Background: Australian Government subsidisation of ipilimumab for the treatment of patients with metastatic melanoma was conditional on the sponsor entering a 'managed entry scheme' to assess the 2-year overall survival rate in metastatic melanoma patients who received ipilimumab in the first year of Pharmaceutical Benefits Scheme listing. Methods: All unresectable stage IIIc / IV metastatic melanoma patients treated with at least one dose of ipilimumab therapy in Australia from the PBS listing date to a time point 12 months later (i...
2018: Journal of Pharmaceutical Policy and Practice
https://www.readbyqxmd.com/read/29456752/treatment-of-the-overriding-fifth-toe-butler-s-arthroplasty-is-a-good-option
#19
R Simões, C Alves, L Tavares, I Balacó, P Sá Cardoso, T Pu Ling, G Matos
Purpose: The overriding fifth toe is a congenital triplane deformity that may cause aesthetic and functional concerns in children and adolescents. This study aims to evaluate the results obtained when using Butler's arthroplasty to treat this forefoot deformity. Methods: We performed a retrospective study, including all patients undergoing Butler's arthroplasty from January 1995 to December 2012. Clinical records were reviewed to determine age at date of surgery, gender, laterality, preoperative symptoms, success of deformity correction, postoperative pain, scarring, need for adapted shoe, rates of complications and recurrence...
February 1, 2018: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/29456582/assessing-the-accuracy-of-ultrasound-estimation-of-gestational-age-during-routine-antenatal-care-in-in-vitro-fertilization-ivf-pregnancies
#20
Bridget Knight, Aaron Brereton, Roy J Powell, Helen Liversedge
Introduction: In the UK an accurate gestational age is confirmed by ultrasound measured foetal crown rump length (CRL) at 11 + 2-14 + 1 weeks of gestation. The currently recommended Robinson and Fleming crown rump length reference chart was develop in 1975. Advances in ultrasound technology and standardized crown rump length measurement training could mean this is now out of date. Our study aimed to assess its accuracy in current routine antenatal care. Methods: Retrospective data from 178 IVF pregnancies seen for routine antenatal care at a UK Regional Maternity Unit between 1 January 2006 and 1 January 2016 was retrieved...
February 2018: Ultrasound: Journal of the British Medical Ultrasound Society
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