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https://www.readbyqxmd.com/read/29236329/predicting-the-bioavailability-of-sediment-bound-uranium-to-the-freshwater-midge-chironomus-dilutus-using-physicochemical-properties
#1
Sarah E Crawford, Stephen Lofts, Karsten Liber
Assessment of uranium (U)-contaminated sediment is often hindered by the inability to accurately account for the physicochemical properties of sediment that modify U bioavailability. The goal of this research was to determine whether sediment-associated U bioavailability could be predicted over a wide range of conditions and sediment properties using simple regressions and a geochemical speciation model, the Windermere Humic Aqueous Model (WHAM7). Data from U-contaminated field sediment bioaccumulation tests, along with previously published bioaccumulation studies with U-spiked field and formulated sediments were used to examine the models...
December 13, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29236225/enhanced-ultrasound-assisted-enzymatic-hydrolysis-extraction-of-quinolizidine-alkaloids-from-sophora-alopecuroides-l-seeds
#2
Hanqing Wang, Yue Tong, Wei Li, Xia Zhang, Xiaojuan Gao, Jingjiao Yong, Jianjun Zhao, Kazuo Koike
Quinolizidine alkaloids are the main bioactive components in Sophora alopecuroides L. This study reports a novel ultrasound-assisted enzymatic hydrolysis method for the extraction of these important alkaloids. Box-Behnken design, a widely used response surface methodology, was used to investigate the effects of process variables on ultrasound bath-assisted enzymatic hydrolysis (UAEH) extraction. Four independent variables, pH, extraction temperature (°C), extraction time (min) and solvent-to-material ratio (mL/g), were studied...
December 13, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/29236181/ultrasound-based-logistic-regression-model-lr2-versus-magnetic-resonance-imaging-for-discriminating-between-benign-and-malignant-adnexal-masses-a-prospective-study
#3
Kanane Shimada, Koji Matsumoto, Takashi Mimura, Tetsuya Ishikawa, Jiro Munechika, Yoshimitsu Ohgiya, Miki Kushima, Yusuke Hirose, Yuka Asami, Chiaki Iitsuka, Shingo Miyamoto, Mamiko Onuki, Hajime Tsunoda, Ryu Matsuoka, Kiyotake Ichizuka, Akihiko Sekizawa
BACKGROUND: The diagnostic performances of the International Ovarian Tumor Analysis (IOTA) ultrasound-based logistic regression model (LR2) and magnetic resonance imaging (MRI) in discriminating between benign and malignant adnexal masses have not been directly compared in a single study. METHODS: Using the IOTA LR2 model and subjective interpretation of MRI findings by experienced radiologists, 265 consecutive patients with adnexal masses were preoperatively evaluated in two hospitals between February 2014 and December 2015...
December 13, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29236053/cut-off-values-of-hematologic-parameters-to-predict-the-number-of-alpha-genes-deleted-in-subjects-with-deletional-alpha-thalassemia
#4
Diego Velasco-Rodríguez, Carlos Blas, Juan-Manuel Alonso-Domínguez, Gala Vega, Carlos Soto, Aránzazu García-Raso, Pilar Llamas-Sillero
Most α-thalassemia cases are caused by deletions of the structural α-globin genes. The degree of microcytosis and hypochromia has been correlated with the number of affected α-globin genes, suggesting a promising role of hematologic parameters as predictive diagnostic tools. However, cut-off points for these parameters to discriminate between the different subtypes of α-thalassemia are yet to be clearly defined. Six hematologic parameters (RBC, Hb, MCV, MCH, MCHC and RDW) were evaluated in 129 cases of deletional α-thalassemia (56 heterozygous α⁺ thalassemia, 36 homozygous α⁺ thalassemia, 29 heterozygous α⁰ thalassemia and 8 cases of Hb H disease)...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29235996/research-on-a-soft-measurement-model-of-sewage-treatment-based-on-a-case-based-reasoning-approach
#5
Jiayan Zhang, Cuicui Du, Xugang Feng
In this paper, the measurement of biochemical oxygen demand (BOD) in a wastewater treatment process is analyzed and an intelligent integrated prediction method based on case-based reasoning (CBR) is proposed in order to overcome difficulties. Due to the fact that there are many factors that influence the accuracy of the prediction model, the radial basis function, which is a neural network with a 3 layer feedforward network, is employed to reduce the dimension of input values. Under these circumstances, a back propagation neural network combining with a nearest neighbor retrieval strategy is adopted to match case...
December 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29235940/slc9b1-methylation-predicts-fetal-intolerance-of-labor
#6
Anna K Knight, Karen N Conneely, Varun Kilaru, Dawayland Cobb, Jennifer L Payne, Samantha Meilman, Elizabeth J Corwin, Zachary A Kaminsky, Anne L Dunlop, Alicia K Smith
Fetal intolerance of labor is a common indication for delivery by Caesarean section. Diagnosis is based on the presence of category III fetal heart rate tracing, which is an abnormal heart tracing associated with increased likelihood of fetal hypoxia and metabolic acidemia. This study analyzed data from 177 unique women who, during their prenatal visits (7-15 weeks and/or 24-32 weeks) to Atlanta area prenatal care clinics, consented to provide blood samples for DNA methylation (HumanMethylation450 BeadChip) and gene expression (Human HT-12 v4 Expression BeadChip) analyses...
December 13, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/29235925/left-atrial-remodelling-may-predict-exercise-capacity-in-obstructive-sleep-apnoea-patients
#7
Süha Çetin, Mustafa Vural, Ramazan Akdemir, Hikmet Fırat
BACKGROUND: Left atrial volume (LAV) and LA deformation has been proposed as a good marker of exercise performance in patients with diastolic dysfunction (DD). As DD is more prevalent in obstructive sleep apnoea (OSA) we aimed to evaluate the influence of LAV and LA deformation parameters on exercise performance in varying severity of OSA. MATERIALS AND METHODS: OSA was diagnosed after polysomnography. Fifty-five OSA patients were enrolled in the study. OSA patients were divided into two groups with apnoea-hypopna-index (AHI) > 30 and <30...
December 13, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/29235733/intraoperative-parathyroid-aspiration-and-parathyroid-hormone-assay-during-parathyroidectomy-for-primary-hyperparathyroidism
#8
Miki Paker, Shani Fisher, Salim Mazzawi, Raul Kolodner, Dror Ashkenazi
BACKGROUND: Direct aspiration from suspected pathological tissue and rapid parathyroid hormone analysis may offer a reliable, cost effective alternative to currently used "gold standard" tests. OBJECTIVES: To validate the accuracy of intraoperative measurements of parathyroid hormone levels in parathyroid adenomas. METHODS: A prospective study included 22 patients diagnosed with primary hyperparathyroidism who underwent parathyroidectomy due to an adenoma or hyperplasia...
December 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29235613/can-gata3-immunocytochemistry-be-utilized-as-a-reliable-diagnostic-marker-for-metastatic-breast-carcinoma-in-cytological-materials-a-comparative-study-with-mammaglobin-and-gcdfp-15-expression
#9
Nesreen H Hafez, HebatAllah M Shaaban
OBJECTIVE: Cytomorphologic differentiation of metastatic breast carcinoma from non breast metastases in cytological materials can be difficult. Current breast immunocytochemical markers have low sensitivities. Transcription factor GATA 3 is a promising marker for detecting breast differentiation in cytological materials. The aim of the study was to assess the diagnostic value of GATA 3 as a breast differentiation marker in metastatic cytological materials and to compare it with expression of mammaglobin and gross cystic disease fluid protein-15 (GCDFP-15)...
December 13, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/29235538/preoperative-neutrophil-to-lymphocyte-ratio-and-tumor-related-factors-to-predict-lymph-node-metastasis-in-nonfunctioning-pancreatic-neuroendocrine-tumors
#10
Bo Zhou, Junfang Deng, Lifeng Chen, Shusen Zheng
The lymph node (LN) status is very important for the survival in pancreatic neuroendocrine tumors (PNETs). Therefore, the investigation of factors related to LN metastases has a great clinical significance. The aim of this study was to evaluate the predictive value of the preoperative neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and possible clinical parameters on the LN metastases in nonfunctional PNETs (NF-PNETs). A retrospective review of 101 NF-PNET patients following curative resection and lymphadenectomy was conducted...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235531/circulating-bone-morphogenetic-protein-9-in-relation-to-metabolic-syndrome-and-insulin-resistance
#11
Xiaohui Xu, Xiaoqiang Li, Gangyi Yang, Ling Li, Wenjing Hu, Lili Zhang, Hua Liu, Hongting Zheng, Minghong Tan, Danping Zhu
Our objective is to determine circulating Bone morphogenetic protein-9(BMP-9) levels in subjects with Metabolic Syndrome (MetS) and examine the relationship between BMP-9 and conventional markers for MetS and insulin resistance (IR). A total of 362 newly diagnosed patients with MetS along with healthy controls were recruited for this cross-sectional study. Circulating BMP-9 levels were measured by ELISA. Circulating BMP-9 levels were significantly lower in MetS patients compared to those of the healthy controls...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235211/pre-transplant-serum-procalcitonin-level-for-prediction-of-early-post-transplant-sepsis-in-living-donor-liver-transplantation
#12
Takanobu Hara, Akihiko Soyama, Masaaki Hidaka, Koji Natsuda, Tomohiko Adachi, Shinichiro Ono, Satomi Okada, Takashi Hamada, Mitsuhisa Takatsuki, Susumu Eguchi
AIM: Infections are frequent causes of in-hospital mortality after liver transplantation (LT). Elimination of possible risks in the pre-transplant period, early diagnosis of post-transplant sepsis, and prompt administration of antimicrobial agents are important. The objectives of this study were to analyze the impact of early post-transplant sepsis on outcomes and to clarify the value of predictive factors for early post-transplant sepsis. METHODS: The study included 136 patients who underwent initial living donor LT (LDLT) at our institute from April 2009 to December 2016...
December 13, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/29235112/heat-shock-protein-70-and-tumor-infiltrating-nk-cells-as-prognostic-indicators-for-patients-with-squamous-cell-carcinoma-of-the-head-and-neck-after-radiochemotherapy-a-multicentre-retrospective-study-of-the-german-cancer-consortium-radiation-oncology-group
#13
Stefan Stangl, Nikoletta Tontcheva, Wolfgang Sievert, Maxim Shevtsov, Minli Niu, Thomas E Schmid, Steffi Pigorsch, Stephanie E Combs, Bernhard Haller, Panagiotis Balermpas, Franz Rödel, Claus Rödel, Emmanouil Fokas, Mechthild Krause, Annett Linge, Fabian Lohhaus, Michael Baumann, Inge Tinhofer, Volker Budach, Martin Stuschke, Anca-Ligia Grosu, Amir Abdollahi, Jürgen Debus, Claus Belka, Cornelius Maihöfer, David Mönnich, Daniel Zips, Gabriele Multhoff
Tumor cells frequently overexpress heat shock protein 70 (Hsp70) and present it on their cell surface, where it can be recognized by pre-activated NK cells. In this retrospective study the expression of Hsp70 was determined in relation to tumor-infiltrating CD56+ NK cells in formalin-fixed paraffin embedded (FFPE) tumor specimens of patients with SCCHN (N=145) as potential indicators for survival and disease recurrence. All patients received radical surgery and postoperative cisplatinum-based radiochemotherapy (RCT)...
December 13, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29235049/age-specific-reference-values-and-cut-off-points-for-anti-m%C3%A3-llerian-hormone-in-infertile-women-following-a-long-agonist-treatment-protocol-for-ivf
#14
Z Hiedar, M Bakhtiyari, F Foroozanfard, M Mirzamoradi
PURPOSE: The aims of this study were to determining the reference value of anti-müllerian hormone (AMH) in infertile women and effect of AMH on different ovarian responses in the stratum of BMI categories. METHODS: Through a retrospective cohort study the information of 816 infertile patients referring to the referral infertility clinic of Mahdiyeh Hospital since the beginning of 2011 until the end of January 2016 were used. The normal-based method was undertaken to calculate age-specific AMH percentiles...
December 12, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29235006/intrinsic-contact-between-t-and-n-classifications-in-resected-well-moderately-differentiated-locoregional-pancreatic-neuroendocrine-neoplasms
#15
Jin-Zhi Xu, Wen-Quan Wang, Shi-Rong Zhang, Hua-Xiang Xu, Chun-Tao Wu, Zi-Hao Qi, He-Li Gao, Quan-Xing Ni, Liang Liu, Xian-Jun Yu
BACKGROUND: The role of N classification is controversial in several prognostication systems proposed for pancreatic neuroendocrine neoplasms (pNENs). The widely accepted modified European Neuroendocrine Tumor Society (mENETS) system suggests this contradiction may be related to T classification. METHODS: Data were collected retrospectively from 981 patients in the Surveillance, Epidemiology, and End Results (SEER) database (1973-2012; cohort 1) and 140 patients from the Pancreatic Cancer Institute of Fudan University (2006-2016; cohort 2)...
December 12, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29234997/learning-epistatic-interactions-from-sequence-activity-data-to-predict-enantioselectivity
#16
Julian Zaugg, Yosephine Gumulya, Alpeshkumar K Malde, Mikael Bodén
Enzymes with a high selectivity are desirable for improving economics of chemical synthesis of enantiopure compounds. To improve enzyme selectivity mutations are often introduced near the catalytic active site. In this compact environment epistatic interactions between residues, where contributions to selectivity are non-additive, play a significant role in determining the degree of selectivity. Using support vector machine regression models we map mutations to the experimentally characterised enantioselectivities for a set of 136 variants of the epoxide hydrolase from the fungus Aspergillus niger (AnEH)...
December 12, 2017: Journal of Computer-aided Molecular Design
https://www.readbyqxmd.com/read/29234914/discriminating-mgmt-promoter-methylation-status-in-patients-with-glioblastoma-employing-amide-proton-transfer-weighted-mri-metrics
#17
Shanshan Jiang, Qihong Rui, Yu Wang, Hye-Young Heo, Tianyu Zou, Hao Yu, Yi Zhang, Xianlong Wang, Yongxing Du, Xinrui Wen, Fangyao Chen, Jihong Wang, Charles G Eberhart, Jinyuan Zhou, Zhibo Wen
OBJECTIVES: To explore the feasibility of using amide proton transfer-weighted (APTw) MRI metrics as surrogate biomarkers to identify the O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation status in glioblastoma (GBM). METHODS: Eighteen newly diagnosed GBM patients, who were previously scanned at 3T and had a confirmed MGMT methylation status, were retrospectively analysed. For each case, a histogram analysis in the tumour mass was performed to evaluate several quantitative APTw MRI metrics...
December 12, 2017: European Radiology
https://www.readbyqxmd.com/read/29234913/prediction-of-the-histopathologic-findings-of-intrahepatic-cholangiocarcinoma-qualitative-and-quantitative-assessment-of-diffusion-weighted-imaging
#18
Sara Lewis, Cecilia Besa, Mathilde Wagner, Kartik Jhaveri, Shingo Kihira, Hongfa Zhu, Nima Sadoughi, Sandra Fischer, Amogh Srivastava, Eric Yee, Koenraad Mortele, James Babb, Swan Thung, Bachir Taouli
OBJECTIVE: To correlate qualitative and quantitative diffusion weighted imaging (DWI) characteristics of intrahepatic cholangiocarcinoma (ICC) with histopathologic tumour grade and fibrosis content. METHODS: Fifty-one patients (21M/30F; mean age 61y) with ICC and MRI including DWI were included in this IRB-approved multicentre retrospective study. Qualitative tumour features were assessed. Tumour apparent diffusion coefficient (ADC) mean, minimum, and normalized (nADCliver) values were computed...
December 12, 2017: European Radiology
https://www.readbyqxmd.com/read/29234833/towards-a-generic-physiologically-based-kinetic-model-to-predict-in-vivo-uterotrophic-responses-in-rats-by-reverse-dosimetry-of-in-vitro-estrogenicity-data
#19
Mengying Zhang, Bennard van Ravenzwaay, Eric Fabian, Ivonne M C M Rietjens, Jochem Louisse
Physiologically based kinetic (PBK) modelling-based reverse dosimetry is a promising tool for the prediction of in vivo developmental toxicity using in vitro concentration-response data. In the present study, the potential of this approach to predict the dose-dependent increase of uterus weight in rats upon exposure to estrogenic chemicals was assessed. In vitro concentration-response data of 17β-estradiol (E2) and bisphenol A (BPA) obtained in the MCF-7/BOS proliferation assay, the U2OS ER-CALUX assay and the yeast estrogen screen (YES) assay, were translated into in vivo dose-response data in rat, using a PBK model with a minimum number of in vitro and in silico determined parameter values...
December 12, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29234665/urinary-luteinizing-hormone-tests-which-concentration-threshold-best-predicts-ovulation
#20
Rene Antonio Leiva, Thomas Paul Bouchard, Saman Hasan Abdullah, René Ecochard
Objective: To study the best possible luteinizing hormone (LH) threshold to predict ovulation within the 24, 48, and 72 h. Design: Observational study. Setting: Multicenter collaborative study. Patients: A total of 107 women. Interventions: Women collected daily first morning urine for hormonal assessment and underwent serial ovarian ultrasound. This is a secondary analysis of 283 cycles. Main outcome measures: The sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios were estimated for varying ranges of LH thresholds...
2017: Frontiers in Public Health
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