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https://www.readbyqxmd.com/read/28222584/ultrasonographic-imaging-of-papillary-thyroid-carcinoma-variants
#1
Jung Hee Shin
Ultrasonography (US) is routinely used to evaluate thyroid nodules. The US features of papillary Epub ahead of print thyroid carcinoma (PTC), the most common thyroid malignancy, include hypoechogenicity, spiculated/microlobulated margins, microcalcifications, and a nonparallel orientation. However, many PTC variants have been identified, some of which differ from the classic type of PTC in terms of biological behavior and clinical outcomes. This review describes the US features and clinical implications of the variants of PTC...
January 12, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28222580/acute-and-delayed-responses-of-steroidal-hormones-blood-lactate-and-biomarkers-of-muscle-damage-after-a-resistance-training-session-time-of-day-effects
#2
Achraf Ammar, Hamdi Chtourou, Mouna Turki, Omar Hammouda, Ahmed Chaari, Mariem Boudaya, Tarak Driss, Fatma Ayedi, Nizar Souissi
BACKGROUND: The present study aimed to investigate the effect of time-of-days (TOD) on some biochemical and hormonal responses after resistance training sessions. METHODS: Ten trained subjects (22±2 years) performed, in randomized order, three resistance-training-sessions at 07h:00, 13h:00 and 17h:00. Each training-session included six upper and lower body resistance exercises with 3×10 repetitions. Blood lactate (Lac), creatine kinase (CK), lactate dehydrogenase (LDH), cortisol (C) and testosterone (T) were collected at rest, 3min and 48h after each-session...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28222561/validation-of-the-standardized-touchscreen-assessment-of-cognition-with-neurotypical-adults
#3
Sarah E Wallace, Elena Donoso Brown, Andrea D Fairman, Koren Beardshall, Anna Olexsovich, Alicia Taylor, James B Schreiber
BACKGROUND: Portable electronic devices are increasingly being used for clinical assessment of individuals with cognitive deficits. Prior to implementation of tablet-based assessments, comparison with other standard measures is needed. OBJECTIVE: The study purpose was to compare an iPad administered cognitive assessment known as the Standardized Touchscreen Assessment of Cognition (STAC) to the Cognitive Linguistic Quick Test (CLQT) and the Cognitive Assessment of Minnesota (CAM)...
February 10, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28222529/progressive-motor-deficit-is-mediated-by-the-denervation-of-neuromuscular-junctions-and-axonal-degeneration-in-transgenic-mice-expressing-mutant-p301s-tau-protein
#4
Zhuoran Yin, Femke Valkenburg, Betty E Hornix, Ietje Mantingh-Otter, Xingdong Zhou, Muriel Mari, Fulvio Reggiori, Debby Van Dam, Bart J L Eggen, Peter P De Deyn, Erik Boddeke
Tauopathies include a variety of neurodegenerative diseases associated with the pathological aggregation of hyperphosphorylated tau, resulting in progressive cognitive decline and motor impairment. The underlying mechanism for motor deficits related to tauopathy is not yet fully understood. Here, we use a novel transgenic tau mouse line, Tau 58/4, with enhanced neuron-specific expression of P301S mutant tau to investigate the motor abnormalities in association with the peripheral nervous system. Using stationary beam, gait, and rotarod tests, motor deficits were found in Tau 58/4 mice already 3 months after birth, which deteriorated during aging...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222511/evaluation-of-a-dna-a%C3%AE-42-vaccine-in-aged-nzw-rabbits-antibody-kinetics-and-immune-profile-after-intradermal-immunization-with-full-length-dna-a%C3%AE-42-trimer
#5
Doris Lambracht-Washington, Min Fu, Mary Wight-Carter, Matthew Riegel, Roger N Rosenberg
A pathological hallmark of Alzheimer's disease (AD) are amyloid plaques in the brain consisting of aggregated amyloid-β 42 peptide (Aβ42) derived from cellular amyloid-β protein precursor (AβPP). Based on successful experiments in mouse AD models, active immunization with Aβ42 peptide and passive immunizations with anti-Aβ42 antibodies were started in clinical trials. Active Aβ42 peptide immunization in humans had led to an inflammatory autoimmune response, and the trial was stopped. Passive immunizations had shown some effects in slowing AD pathology...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222506/synaptic-compensation-as-a-probable-cause-of-prolonged-mild-cognitive-impairment-in-alzheimer-s-disease-implications-from-a-transgenic-mouse-model-of-the-disease
#6
Narjes Baazaoui, Michael Flory, Khalid Iqbal
Alzheimer's disease (AD) is a slow, progressive neurodegenerative disease in which cognitive decline takes place over a period of several years with a very variable period of mild cognitive impairment (MCI) and, in some cases, relatively long period before progression to dementia. The cognitive deficit during MCI is probably due to neuronal loss, an intermediate level of amyloid-β (Aβ) plaques and neurofibrillary tangles (NFT) and synaptosis, which is interrupted with a transient compensatory increase. We found impairment in reference memory accompanied by a decrease in the expression of synaptophysin, β-III tubulin, and MAP2 and a trend for GluR1, at 12 weeks of age in 3xTg-AD mice (hAPPSwe, P301L tau, PS1 [M146V] knock-in), a widely used transgenic model of AD...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222505/cognitive-training-interventions-for%C3%A2-patients-with-alzheimer-s-disease-a%C3%A2-systematic-review
#7
Eeva-Liisa Kallio, Hanna Öhman, Hannu Kautiainen, Marja Hietanen, Kaisu Pitkälä
BACKGROUND: Cognitive training (CT) refers to guided cognitive exercises designed to improve specific cognitive functions, as well as enhance performance in untrained cognitive tasks. Positive effects of CT on cognitive functions in healthy elderly people and persons with mild cognitive impairment have been reported, but data regarding the effects of CT in patients with dementia is unclear. OBJECTIVE: We systematically reviewed the current evidence from randomized controlled trials (RCTs) to find out if CT improves or stabilizes cognition and/or everyday functioning in patients with mild and moderate Alzheimer's disease...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222471/telemedizin-potenziale-in-der-notfallmedizin
#8
Jörg C Brokmann, Marc Felzen, Stefan K Beckers, Michael Czaplik, Frederik Hirsch, Sebastian Bergrath, Rolf Rossaint
The telemedical support and networking between health personnel and medical specialists increases the quality of supply also in the prehospital emergency care. Till now only for some tracer diagnosis specifically designed telemedical services were used. However, now a unique holistic telemedicine system, which can be used for the whole emergency spectrum as a supplementary feature has been developed. It can be used for the whole prehospital emergency care. The needfulness and meaningfulness of telemedicine as well as the important structural characteristics in prehospital emergency care are pictured...
February 2017: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/28222414/urinary-steroid-metabolites-in-a-case-of-florid-ectopic-cushing-s-syndrome-and-clinical-correlations
#9
Angelos Kyriacou, Karolina G Stepien, Basil Issa
A 51-year old woman was admitted with multiple cerebral, pulmonary and intra-abdominal abscesses. The combination of apparent immunosuppression, obesity, diabetes mellitus, hypertension, hypokalaemia, osteoporotic fractures and bilateral shoulder avascular necrosis led to a clinical diagnosis of Cushing's syndrome (CS). This was biochemically confirmed as follows: midnight serum cortisol 4275 nmol/L (60-250), non-suppressed overnight dexamethasone suppression test, raised salivary cortisol 716 nmol/L (5-46) and ACTH 639 ng/L (0-46)...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28222406/leydig-cell-clustering-and-reinke-crystal-distribution-in-relation-to-hormonal-function-in-adult-patients-with-testicular-dysgenesis-syndrome-tds-including-cryptorchidism
#10
Rikke R Soerensen, Trine H Johannsen, Niels E Skakkebaek, Ewa Rajpert-De Meyts
OBJECTIVE: Testicular dysgenesis syndrome (TDS) comprises testicular germ cell cancer, cryptorchidism and some cases of male infertility and hypospadias, which can be linked to impairment of intrauterine gonadal development. Among histological signs of TDS, large Leydig cell (LC) clusters (micronodules) are frequently present. This study aimed to investigate possible associations of LC micronodules with the presence of Reinke crystals and hormonal function of LCs, the latter primarily reflected by serum concentrations of luteinising hormone (LH) and testosterone, in patients with TDS...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28222398/isolation-of-a-new-resorcinolic-lipid-from-mangifera-zeylanica-hook-f-bark-and-its-cytotoxic-and-apoptotic-potential
#11
Meran Keshawa Ediriweera, Kamani Hemamala Tennekoon, Sameera Ranganath Samarakoon, Achyut Adhikari, Ira Thabrew, E Dilip de Silva
Mangifera zeylanica is a plant endemic to Sri Lanka and its bark has been used in traditional medicine to treat some cancers. This study was aimed to isolate potentially cytotoxic compound/s from the hexane extract of the bark of M. zeylanica by bio-activity guided fractionation. The structure of the isolated compound (1) was elucidated using (1)H, (13)C NMR and mass spectrometric techniques. Compound 1 was identified as a new resorcinolic lipid (5-((8Z, 11Z, 14Z)-hexatriaconta-8, 11, 14-trienyl) benzene-1,3-diol)...
February 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28222397/a-novel-approach-towards-design-synthesis-and-evaluation-of-some-schiff-base-analogues-of-2-aminopyridine-and-2-aminobezothiazole-against-hepatocellular-carcinoma
#12
Shinu Chacko, Subir Samanta
Hepatocellular carcinoma is the most common primary malignancy of the liver with poor prognosis. In this study novel, Schiff's bases of 2-aminopyridine (SSSC-26 to 31) and 2-aminobenzothiazole (SSSC-32 to 37) were designed, synthesised and evaluated for antioxidant potential using DPPH method, and anti-hepatocellular carcinoma property using diethylnitrosamine (DEN) induced hepatocellular carcinoma rat model. The in-silico pharmacokinetic, rule of five and toxicity studies reveals that all the leads have an excellent intrinsic quality and sufficient structural features necessary for an oral activity...
February 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28222396/lawsone-suppresses-azoxymethane-mediated-colon-cancer-in-rats-and-reduces-proliferation-of-dld-1-cells-via-nf-%C3%AE%C2%BAb-pathway
#13
Shi-Bin Wang, Zhenzhou Tao, Ping Li
Lawsone (LS) a colored napthoquinone compound obtained from the plant Lawsonia inermis L. (Lythraceae) is known for its usefulness of being a precursor for synthesis of some anticancer compounds. Literatures support potent anticancer activity of napthoquinone derivatives in human colon cancer, present study evaluates the effect and mechanism of LS on chemical induced colon cancerous rats and human colon cancer DLD-1 cells, the study was supported by endoscopy, histological and immunohistochemistry analysis...
February 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28222386/heterogeneous-fractionation-profiles-of-meta-analytic-coactivation-networks
#14
Angela R Laird, Michael C Riedel, Mershack Okoe, Radu Jianu, Kimberly L Ray, Simon B Eickhoff, Stephen M Smith, Peter T Fox, Matthew T Sutherland
Computational cognitive neuroimaging approaches can be leveraged to characterize the hierarchical organization of distributed, functionally specialized networks in the human brain. To this end, we performed large-scale mining across the BrainMap database of coordinate-based activation locations from over 10,000 task-based experiments. Meta-analytic coactivation networks were identified by jointly applying independent component analysis (ICA) and meta-analytic connectivity modeling (MACM) across a wide range of model orders (i...
February 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28222382/corporeal-illusions-in-chronic-spinal-cord-injuries
#15
Michele Scandola, Salvatore Maria Aglioti, Renato Avesani, Gianettore Bertagnoni, Anna Marangoni, Valentina Moro
While several studies have investigated corporeal illusions in patients who have suffered from a stroke or undergone an amputation, only anecdotal or single case reports have explored this phenomenon after spinal cord injury. Here we examine various different types of bodily misperceptions in a comparatively large group of 49 people with spinal cord injury in the post-acute and chronic phases after the traumatic lesion onset. An extensive battery of questionnaires concerning a variety of body related feelings was administered and the results were correlated to the main clinical variables...
February 17, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28222362/quinazolinone-benzimidazole-conjugates-synthesis-characterization-dihydrofolate-reductase-inhibition-dna-and-protein-binding-properties
#16
Prinka Singla, Vijay Luxami, Kamaldeep Paul
Quinazolinone and benzimidazole represent as important and abundant classes of fused nitrogen-containing heterocycle. A series of two isomeric quinazolinone-benzimidazole conjugates is synthesized and substitutes with different aromatic rings. These compounds are well characterized by (1)H and (13)C NMR as well as mass spectrometry. Compounds are then evaluated by dihydrofolate reductase inhibitory activity. In vitro assay shows that some compounds are exhibiting significant dihydrofolate reductase inhibitory activities...
February 14, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28222354/modelling-with-words-narrative-and-natural-selection
#17
Dominic K Dimech
I argue that verbal models should be included in a philosophical account of the scientific practice of modelling. Weisberg (2013) has directly opposed this thesis on the grounds that verbal structures, if they are used in science, only merely describe models. I look at examples from Darwin's On the Origin of Species (1859) of verbally constructed narratives that I claim model the general phenomenon of evolution by natural selection. In each of the cases I look at, a particular scenario is described that involves at least some fictitious elements but represents the salient causal components of natural selection...
February 18, 2017: Studies in History and Philosophy of Biological and Biomedical Sciences
https://www.readbyqxmd.com/read/28222350/a-thdreb-gene-from-tamarix-hispida-improved-the-salt-and-drought-tolerance-of-transgenic-tobacco-and-t-%C3%A2-hispida
#18
Guiyan Yang, Lili Yu, Kaimin Zhang, Yulin Zhao, Yucong Guo, Caiqiu Gao
Dehydration-responsive element-binding (DREB) transcription factors are important abiotic stress tolerance related genes, and some reports on the roles of DREB have primarily addressed herbal plants. To explore the abiotic stress tolerance role of DREB (ThDREB) from Tamarix hispida, a ThDREB gene with a complete ORF of 783 bp that encodes a 28.74 kDa protein with 260 amino acids, was isolated and functionally annotated. ThDREB expression was highly induced by NaCl, PEG, NaHCO3 and CdCl2 treatments, and the highest expression level (369...
February 10, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28222345/dc-eeg-recordings-of-mindfulness
#19
Ernst Rodin, Harald Bornfleth, Michael Johnson
OBJECTIVE: To assess the frequency spectrum of the normal waking human eyes-closed EEG while concentrating on a mental task. METHODS: Ten adult normal volunteers listened to a CD encouraging mindfulness for one hour and five minutes while their EEG was recorded on a 128 channel DC based ANT system. The software package BESA Research version 6.1 was used for data analysis. The data were subjected to topographic display, frequency as well as independent component analysis...
January 26, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28222324/graph-based-segmentation-of-abnormal-nuclei-in-cervical-cytology
#20
Ling Zhang, Hui Kong, Shaoxiong Liu, Tianfu Wang, Siping Chen, Milan Sonka
A general method is reported for improving the segmentation of abnormal cell nuclei in cervical cytology images. In automation-assisted reading of cervical cytology, one of the essential steps is the segmentation of nuclei. Despite some progress, there is a need to improve the sensitivity, particularly the segmentation of abnormal nuclei. Our method starts with pre-segmenting the nucleus to define the coarse center and size of nucleus, which is used to construct a graph by image unfolding that maps ellipse-like border in the Cartesian coordinate system to lines in the polar coordinate system...
January 31, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
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