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https://www.readbyqxmd.com/read/29779252/germination-niche-breadth-varies-inconsistently-among-three-asclepias-congeners-along-a-latitudinal-gradient
#1
Jessamine Finch, Jeffrey L Walck, Siti N Hidayati, Andrea T Kramer, Victoria Lason, Kayri Havens
Species responses to climate change will be primarily driven by their environmental tolerance range, or niche breadth, with the expectation that broad niches will increase resilience. Niche breadth is expected to be greater in more heterogeneous environments and moderated by life history. Niche breadth also varies across life stage. Therefore, the life stage with the narrowest niche may serve as the best predictor of climatic vulnerability. To investigate the relationship between niche breadth, climate, and life stage we identify germination niche breadth for dormant and nondormant seeds in multiple populations of three milkweed (Asclepias) species...
May 20, 2018: Plant Biology
https://www.readbyqxmd.com/read/29779207/density-functional-theory-and-ab-initio-computational-evidence-for-nitrosamine-photoperoxides-hammett-substituent-effects-in-the-photogeneration-of-the-nitrooxide-intermediate
#2
Edyta M Greer, Kitae Kwon
Little attention has been focused on diradical and zwitterionic photoperoxides formed from nitrosamine compounds. Here, an attempt is made to probe the electronic character of the nitrooxide intermediate formed in photochemical reactions with triplet oxygen (3 O2 ). Theoretical studies have been conducted to screen para-substituted phenyl nitrosamines. In particular, we find that electron-withdrawing substituents produce low-lying triplet nitrooxide diradicals. A clear electronic dependence in the S0 - T1 and S0 - S1 energy gaps of nitrooxides was found using Hammett plots...
May 20, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29779202/tumour-stage-and-gender-predict-recurrence-and-second-primary-malignancies-in-head-and-neck-cancer-a-multicentre-study-within-the-inhance-consortium
#3
Emanuele Leoncini, Vladimir Vukovic, Gabriella Cadoni, Luca Giraldi, Roberta Pastorino, Dario Arzani, Livia Petrelli, Victor Wünsch-Filho, Tatiana Natasha Toporcov, Raquel Ayub Moyses, Keitaro Matsuo, Cristina Bosetti, Carlo La Vecchia, Diego Serraino, Lorenzo Simonato, Franco Merletti, Paolo Boffetta, Mia Hashibe, Yuan-Chin Amy Lee, Stefania Boccia
Recurrence and second primary cancer (SPC) continue to represent major obstacles to long-term survival in head and neck cancer (HNC). Our aim was to evaluate whether established demographics, lifestyle-related risk factors for HNC and clinical data are associated with recurrence and SPC in HNC. We conducted a multicentre study by using data from five studies members of the International Head and Neck Cancer Epidemiology consortium-Milan, Rome, Western Europe, Sao Paulo, and Japan, totalling 4005 HNC cases with a median age of 59 (interquartile range 52-67)...
May 19, 2018: European Journal of Epidemiology
https://www.readbyqxmd.com/read/29779196/retrospective-analysis-of-an-insulin-to-liraglutide-switch-in-patients-with-type-2-diabetes-mellitus
#4
Eveline Bruinstroop, Laura Meyer, Catherine B Brouwer, Diana E van Rooijen, P Sytze van Dam
INTRODUCTION: Insulin and the GLP-1 receptor agonist liraglutide are both effective in reaching glycemic targets. The efficacy of an insulin-to-liraglutide switch in an obese population with concurrent use of sulfonylurea and metformin is unknown. We assessed the efficacy and determinants of success of an insulin-to-liraglutide switch in these patients. METHODS: In a retrospective study we analyzed all patients that underwent an insulin-to-liraglutide switch during routine medical care (January 2009-February 2015)...
May 19, 2018: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/29779185/predictive-role-of-measurement-of-pelvic-floor-muscle-thickness-with-static-mri-in-stress-and-mixed-urinary-incontinence
#5
Levent Yaşar, Serpil Ortakuz Telci, Keziban Doğan, Eyüp Kaya, Murat Ekin
INTRODUCTION AND HYPOTHESIS: To investigate the role of measuring the thickness of pelvic floor muscles with static MRI in the physiopathology of urinary incontinence in women with stress and mixed types of urinary incontinence diagnosed with urodynamic studies. METHODS: A retrospective clinical study was designed in collaboration with the radiology department. We recruited only patients who had undergone static pelvic MRI to determine the etiology of pelvic pain and exclude gynecologic disorders...
May 19, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29779177/computational-identification-of-structural-factors-affecting-the-mutagenic-potential-of-aromatic-amines-study-design-and-experimental-validation
#6
Svetoslav H Slavov, Iva Stoyanova-Slavova, William Mattes, Richard D Beger, Beat J Brüschweiler
A grid-based, alignment-independent 3D-SDAR (three-dimensional spectral data-activity relationship) approach based on simulated 13 C and 15 N NMR chemical shifts augmented with through-space interatomic distances was used to model the mutagenicity of 554 primary and 419 secondary aromatic amines. A robust modeling strategy supported by extensive validation including randomized training/hold-out test set pairs, validation sets, "blind" external test sets as well as experimental validation was applied to avoid over-parameterization and build Organization for Economic Cooperation and Development (OECD 2004) compliant models...
May 19, 2018: Archives of Toxicology
https://www.readbyqxmd.com/read/29779158/diffusion-weighted-magnetic-resonance-enterography-for-prediction-of-response-to-tumor-necrosis-factor-inhibitors-in-stricturing-crohn-s-disease
#7
Marianne M Amitai, Eyal Klang, Asaf Levartovsky, Noa Rozendorn, Shelly Soffer, Gadeer Ali Taha, Bella Ungar, Tomer Greener, Shomron Ben-Horin, Rami Eliakim, Uri Kopylov
BACKGROUND AND AIMS: Distinguishing between fibrotic and inflammatory strictures in Crohn's disease (CD) is still challenging. The capacity of diffusion-weighted (DWI) magnetic resonance (MRE) to identify intestinal fibrosis was recently demonstrated; however, the therapeutic implications of this association have never been evaluated. The aim of the current study was to identify imaging features, including DWI, which can predict response to anti-inflammatory treatment in patients with stricturing CD...
May 19, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29779142/arousal-index-as-a-marker-of-carotid-artery-atherosclerosis-in-patients-with-obstructive-sleep-apnea-syndrome
#8
Mayumi Suzuki, Ken Shimamoto, Haruki Sekiguchi, Takamitsu Harada, Natsumi Satoya, Yuji Inoue, Kazuhiro Yamaguchi, Masatoshi Kawana
PURPOSE: It was shown in a previous cohort study that men with internal carotid artery (ICA) plaque, defined as focal wall thickness of ≥ 1.5 mm, had a threefold higher risk of stroke than those without plaque. We examined the relationship between arousal indices and sleep stages in patients with obstructive sleep apnea syndrome (OSAS) and carotid atherosclerosis. METHODS: Carotid atherosclerosis severity was evaluated using the maximal carotid wall intima-media thickness of the ICA (ICA-maxIMT) and plaque in 83 patients with OSAS...
May 19, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29779138/cognitive-syndromes-after-the-first-stroke
#9
Denisa Salihović, Dževdet Smajlović, Milija Mijajlović, Emina Zoletić, Omer Ć Ibrahimagić
AIM: The aim of this study is to determine impairments of certain cognitive functions in certain vascular cognitive syndromes and to identify predictors of dementia. PATIENTS AND METHODS: One-year prospective study included 275 patients, who were hospitalized at the Department of Neurology Tuzla and therefore fulfilled certain criteria. Patients were divided into following subgroups of vascular cognitive impairment (VCI): dementia of strategic infarct (DSI), cortical dementia (CD), sub cortical dementia (SCD), hemorrhagic dementia (HD), and patients without dementia...
May 19, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29779136/genetic-mutation-analysis-of-the-malignant-transformation-of-sinonasal-inverted-papilloma-by-targeted-amplicon-sequencing
#10
Shinichiro Yasukawa, Satoshi Kano, Hiromitsu Hatakeyama, Yuji Nakamaru, Dai Takagi, Takatsugu Mizumachi, Masanobu Suzuki, Takayoshi Suzuki, Akira Nakazono, Shinya Tanaka, Hiroshi Nishihara, Akihiro Homma
BACKGROUND: The mechanism underlying the malignant transformation of inverted papilloma (IP) has not yet been elucidated. METHODS: To clarify the genes responsible for the malignant transformation, we analyzed 10 cases of IP, 8 of IP with dysplasia, and 11 of squamous cell carcinoma (SCC) by targeted amplicon sequencing. RESULTS: The number of mutant genes increased in the order of IP < dysplasia < SCC. Significant differences were observed in the mutation rates of three genes (KRAS, APC and STK11) in particular...
May 19, 2018: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29779135/novel-evaluation-scale-for-qol-qol-acd-bp-in-preoperative-chemotherapy-for-breast-cancer
#11
Koji Takada, Shinichiro Kashiwagi, Wataru Goto, Yuka Asano, Katsuyuki Takahashi, Tamami Morisaki, Tsutomu Takashima, Shuhei Tomita, Kosei Hirakawa, Masaichi Ohira
PURPOSE: Quality-of-life (QOL) has been reported to affect the prognosis of many types of cancer, and several studies used various QOL assessment tools to determine the relationship between QOL and cancer prognosis. In this study, QOL-Questionnaire for Cancer Patients Treated with Anti-Cancer Drugs-the Breast (QOL-ACD-B) was modified to be suitable for preoperative chemotherapy (POC) and was named the QOL-ACD-BP. METHODS: A total of 300 patients were treated with POC after being diagnosed with breast cancer between February 2007 and December 2016 at our institute...
May 19, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29779118/change-in-kidney-function-after-unilateral-adrenalectomy-in-patients-with-primary-aldosteronism-identification-of-risk-factors-for-decreased-kidney-function
#12
Il Young Kim, In Seong Park, Min Jeong Kim, Miyeun Han, Harin Rhee, Eun Young Seong, Dong Won Lee, Soo Bong Lee, Ihm Soo Kwak, Sang Heon Song, Hyun Chul Chung
PURPOSE: Glomerular filtration rate (GFR) has been reported to decrease after unilateral adrenalectomy in patients with primary aldosteronism (PA). The aim of this study was to identify clinical predictors for decreased GFR after adrenalectomy in patients with PA. METHODS: The records of 187 patients (98 patients with PA and 89 with non-PA adrenal disease) who were followed up for at least 6 months after unilateral adrenalectomy were retrospectively analyzed. Estimated GFR (eGFR) was investigated at 1, 3, and 6 months postoperatively...
May 19, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29779093/pharmacokinetics-of-the-novel-selective-non-steroidal-mineralocorticoid-receptor-antagonist-finerenone-in-healthy-volunteers-results-from-an-absolute-bioavailability-study-and-drug-drug-interaction-studies-in-vitro-and-in-vivo
#13
Roland Heinig, Michael Gerisch, Anna Engelen, Johannes Nagelschmitz, Stephanie Loewen
BACKGROUND AND OBJECTIVES: Finerenone is a selective, non-steroidal mineralocorticoid receptor antagonist. In vivo and in vitro studies were performed to assess absolute bioavailability of finerenone, the effect of metabolic enzyme inhibitors on the pharmacokinetics of finerenone and its metabolites, the quantitative contribution of the involved enzymes cytochrome P450 (CYP) 3A4 and CYP2C8 and the relevance of gut wall versus liver metabolism. METHODS: The pharmacokinetics, safety and tolerability of finerenone (1...
May 19, 2018: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/29779085/progressive-grey-matter-volume-changes-in-patients-with-schizophrenia-over-6-weeks-of-antipsychotic-treatment-and-their-relationship-to-clinical-improvement
#14
Xiao Zhang, Yuyanan Zhang, Jinmin Liao, Sisi Jiang, Jun Yan, Weihua Yue, Dai Zhang, Hao Yan
Cross-sectional and longitudinal studies have identified widespread and progressive grey matter volume (GMV) reductions in schizophrenia, especially in the frontal lobe. In this study, we found a progressive GMV decrease in the rostral medial frontal cortex (rMFC, including the anterior cingulate cortex) in the patient group during a 6-week follow-up of 40 patients with schizophrenia and 31 healthy controls well-matched for age, gender, and education. The higher baseline GMV in the rMFC predicted better improvement in the positive score on the Positive and Negative Syndrome Scale (PANSS), and this might be related to the improved reality-monitoring...
May 19, 2018: Neuroscience Bulletin
https://www.readbyqxmd.com/read/29779083/identifying-nonalcoholic-fatty-liver-disease-advanced-fibrosis-in-the-veterans-health-administration
#15
Yuval A Patel, Elizabeth J Gifford, Lisa M Glass, Marsha J Turner, Byungjoo Han, Cynthia A Moylan, Steve Choi, Ayako Suzuki, Dawn Provenzale, Christine M Hunt
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease. Severe NAFLD with advanced fibrosis results in substantial morbidity and mortality. Associated with metabolic syndrome, NAFLD is often initially clinically silent, yet intensive lifestyle intervention with 7% or greater weight loss can improve or resolve NAFLD. Using a Veterans Health Administration (VHA) liver biopsy cohort, we evaluated simple noninvasive fibrosis scoring systems to identify NAFLD with advanced fibrosis (or severe disease) to assist providers...
May 19, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29779072/intratumoral-heterogeneity-on-dedicated-breast-positron-emission-tomography-predicts-malignancy-grade-of-breast-cancer
#16
Norio Masumoto, Takayuki Kadoya, Shinsuke Sasada, Akiko Emi, Koji Arihiro, Morihito Okada
PURPOSE: Dedicated breast positron emission tomography (DbPET) provides detailed high-resolution images and can detect intratumoral heterogeneity using 18 F-fluorodeoxyglucose (FDG). We aimed to evaluate the correlation between FDG uptake on DbPET and the clinicopathological features of breast cancer, particularly those with an intratumoral heterogeneous distribution of FDG on DbPET. METHODS: We evaluated 195 consecutive patients with invasive breast cancer who underwent preoperative whole-body PET (WBPET) and DbPET concurrently between January 2016 and March 2017...
May 19, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29779047/over-diagnosis-of-potential-malignant-behavior-in-men-2a-associated-pheochromocytomas-using-the-pass-and-gapp-algorithms
#17
Adam Stenman, Jan Zedenius, Carl Christofer Juhlin
PURPOSE: Pheochromocytomas (PCCs) exhibit malignant potential, but current histological modalities for the proper detection of aggressive behavior are debated. The two most widespread algorithms are the "Pheochromocytoma of the Adrenal Gland Scaled Score" (PASS) and the "Grading System for Adrenal Pheochromocytoma and Paraganglioma" (GAPP), both which mostly rely on histological parameters to identify PCC patients at risk of disseminated disease. Since the algorithms are derived from studies using predominantly sporadic PCCs, little is known whether the PASS or GAPP scores can predict malignant potential in hereditary cases...
May 19, 2018: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/29779046/sex-differences-in-the-long-term-prognostic-value-of-13-n-ammonia-myocardial-perfusion-positron-emission-tomography
#18
Catherine Gebhard, Michael Fiechter, Bernhard A Herzog, Christine Lohmann, Susan Bengs, Valerie Treyer, Michael Messerli, Dominik C Benz, Andreas A Giannopoulos, Christoph Gräni, Aju P Pazhenkottil, Ronny R Buechel, Philipp A Kaufmann
PURPOSE: Evidence to date on the unique female determinants of cardiovascular risk is inadequate. Positron Emission Tomography (PET) is considered to have the highest accuracy for the assessment of myocardial perfusion in patients with suspected coronary artery disease (CAD), but its long-term prognostic accuracy in women has not been established. METHODS: A total of 619 consecutive patients (138 women, mean age 60.0 ± 11.8 years) underwent clinically indicated 13 N-ammonia PET at our institution and were followed up (median 5...
May 19, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29779045/clinical-utility-of-fdg-pet-in-parkinson-s-disease-and-atypical-parkinsonism-associated-with-dementia
#19
REVIEW
Zuzana Walker, Federica Gandolfo, Stefania Orini, Valentina Garibotto, Federica Agosta, Javier Arbizu, Femke Bouwman, Alexander Drzezga, Peter Nestor, Marina Boccardi, Daniele Altomare, Cristina Festari, Flavio Nobili
PURPOSE: There are no comprehensive guidelines for the use of FDG PET in the following three clinical scenarios: (1) diagnostic work-up of patients with idiopathic Parkinson's disease (PD) at risk of future cognitive decline, (2) discriminating idiopathic PD from progressive supranuclear palsy, and (3) identifying the underlying neuropathology in corticobasal syndrome. METHODS: We therefore performed three literature searches and evaluated the selected studies for quality of design, risk of bias, inconsistency, imprecision, indirectness and effect size...
May 19, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29779042/combining-theoretical-and-experimental-data-to-decipher-cftr-3d-structures-and-functions
#20
Brice Hoffmann, Ahmad Elbahnsi, Pierre Lehn, Jean-Luc Décout, Fabio Pietrucci, Jean-Paul Mornon, Isabelle Callebaut
Cryo-electron microscopy (cryo-EM) has recently provided invaluable experimental data about the full-length cystic fibrosis transmembrane conductance regulator (CFTR) 3D structure. However, this experimental information deals with inactive states of the channel, either in an apo, quiescent conformation, in which nucleotide-binding domains (NBDs) are widely separated or in an ATP-bound, yet closed conformation. Here, we show that 3D structure models of the open and closed forms of the channel, now further supported by metadynamics simulations and by comparison with the cryo-EM data, could be used to gain some insights into critical features of the conformational transition toward active CFTR forms...
May 19, 2018: Cellular and Molecular Life Sciences: CMLS
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