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https://www.readbyqxmd.com/read/28645022/benzene-and-childhood-acute-leukemia-in-oklahoma
#1
Amanda E Janitz, Janis E Campbell, Sheryl Magzamen, Anne Pate, Julie A Stoner, Jennifer D Peck
BACKGROUND: Although childhood cancer is a leading cause of childhood mortality in the US, evidence regarding the etiology is lacking. The goal of this study was to evaluate the association between benzene, a known carcinogen, and childhood acute leukemia. METHODS: We conducted a case-control study including cases diagnosed with acute leukemia between 1997 and 2012 (n = 307) from the Oklahoma Central Cancer Registry and controls matched on week of birth from birth certificates (n = 1013)...
June 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28644813/sufficient-condition-for-the-existence-of-the-compact-set-in-the-rbf-neural-network-control
#2
Jiaming Zhu, Zhiqiang Cao, Tianping Zhang, Yuequan Yang, Yang Yi
In this brief, sufficient conditions are proposed for the existence of the compact sets in the neural network controls. First, we point out that the existence of the compact set in a classical neural network control scheme is unsolved and its result is incomplete. Next, as a simple case, we derive the sufficient condition of the existence of the compact set for the neural network control of first-order systems. Finally, we propose the sufficient condition of the existence of the compact set for the neural-network-based backstepping control of high-order nonlinear systems...
June 20, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28644570/clinical-and-genetic-analysis-of-patients-with-cherubism
#3
R A Machado, H A R Pontes, F R Pires, H M Silveira, A Bufalino, R Carlos, F M Tuji, D B M Alves, A R Santos-Silva, M A Lopes, H M Capistrano, R D Coletta, F P Fonseca
OBJECTIVE: To describe the clinical and genetic features of patients with cherubism. MATERIAL AND METHODS: A descriptive analysis of 14 cases from 9 different families was carried out. Clinicopathological, imaging and follow-up data were retrieved from patients' medical files and correlated with the genetic profile of each patient. Genomic DNA isolated from buccal mucosa cells was subjected to direct sequencing analysis of the SH3BP2 gene. RESULTS: Females were more affected than males (8:6), and the mean age at diagnosis was 8...
June 23, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28644064/frequent-vomiting-attacks-in-a-patient-with-lhermitte-duclos-disease-a-rare-pathophysiology-of-cerebellar-lesions
#4
Chika Somagawa, Tomonori Ono, Ryoko Honda, Hiroshi Baba, Takeshi Hiu, Ryujiro Ushijima, Keisuke Toda, Kei Sato, Masahiro Ito, Keisuke Tsutsumi
Lhermitte-Duclos disease (LDD) is a neurological disease caused by a hamartomatous lesion in the cerebellum. Clinically, LDD is commonly associated with progressive space-occupying lesion effects in the posterior fossa, increasing intracranial pressure, occlusive hydrocephalus, and focal neurological deficits of adjacent structures. The authors report the case of a 10-year-old boy with LDD who had been suffering from vomiting attacks (VAs). These VAs had been brief in duration but extremely frequent, and they had been resistant to antiemetic drugs since the early postnatal period...
June 23, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28644018/the-role-of-the-crystal-structure-in-cation-exchange-reactions-involving-colloidal-cu2se-nanocrystals
#5
Graziella Gariano, Vladimir Lesnyak, Rosaria Brescia, Giovanni Bertoni, Zhiya Dang, Roberto Gaspari, Luca De Trizio, Liberato Manna
Stoichiometric Cu2Se nanocrystals were synthesized in either cubic or hexagonal (metastable) crystal structures and used as the host material in cation exchange reactions with Pb2+ ions. Even if the final product of the exchange, in both cases, was rock-salt PbSe nanocrystals, we show here that the crystal structure of the starting nanocrystals has a strong influence on the exchange pathway. The exposure of cubic Cu2Se nanocrystals to Pb2+ cations led to the initial formation of PbSe unselectively on the overall surface of the host nanocrystals, generating Cu2Se@PbSe core@shell nano-heterostructures...
June 23, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28643629/faecal-immunochemical-tests-to-triage-patients-with-lower-abdominal-symptoms-for-suspected-colorectal-cancer-referrals-in-primary-care-a-systematic-review-and-cost-effectiveness-analysis
#6
Marie Westwood, Isaac Corro Ramos, Shona Lang, Marianne Luyendijk, Remziye Zaim, Lisa Stirk, Maiwenn Al, Nigel Armstrong, Jos Kleijnen
BACKGROUND: Colorectal cancer (CRC) is the third most common cancer in the UK. Presenting symptoms that can be associated with CRC usually have another explanation. Faecal immunochemical tests (FITs) detect blood that is not visible to the naked eye and may help to select patients who are likely to benefit from further investigation. OBJECTIVES: To assess the effectiveness of FITs [OC-Sensor (Eiken Chemical Co./MAST Diagnostics, Tokyo, Japan), HM-JACKarc (Kyowa Medex/Alpha Laboratories Ltd, Tokyo, Japan), FOB Gold (Sentinel/Sysmex, Sentinel Diagnostics, Milan, Italy), RIDASCREEN Hb or RIDASCREEN Hb/Hp complex (R-Biopharm, Darmstadt, Germany)] for primary care triage of people with low-risk symptoms...
May 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28643569/iron-overload-directly-affecting-the-ovaries-in-a-patient-with-diamond-blackfan-anaemia-a-case-report
#7
Mariano Mascarenhas, Victoria Rawnsley, Adam Balen
Iron is a 'one-way' element and the primary point of regulation of body iron stores is at the level of intestinal iron absorption. Repeated blood transfusions for congenital anaemias bypass this regulatory checkpoint and inevitably lead to iron overload in the long-term. Iron overload causes multi-organ dysfunction of the heart, liver, pancreas and joints. It also causes reproductive toxicity primarily through its damaging effect on the anterior pituitary leading to hypogonadotrophic hypogonadism. Another less understood mechanism of reproductive toxicity is direct gonadal damage of excess free iron...
June 23, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28643520/main-plant-extracts-active-properties-effective-on-scopolamine-induced-memory-loss
#8
Ioana-Miruna Balmus, Alin Ciobica
Alzheimer's disease leads to progressive cognitive function loss, which may impair both intellectual capacities and psychosocial aspects. Although the current knowledge points to a multifactorial character of Alzheimer's disease, the most issued pathological hypothesis remains the cholinergic theory. The main animal model used in cholinergic theory research is the scopolamine-induced memory loss model. Although, in some cases, a temporary symptomatic relief can be obtained through targeting the cholinergic or glutamatergic neurotransmitter systems, no current treatment is able to stop or slow cognitive impairment...
January 1, 2017: American Journal of Alzheimer's Disease and Other Dementias
https://www.readbyqxmd.com/read/28643397/experimental-study-on-the-postmortem-redistribution-of-the-substituted-phenethylamine-25b-nbome
#9
Kaori Shintani-Ishida, Kanju Saka, Mami Nakamura, Ken-Ichi Yoshida, Hiroshi Ikegaya
2-(4-Bromo-2,5-dimethoxyphenyl)-N-(2-methoxybenzyl)ethanamine (25B-NBOMe) is a substituted phenethylamine, which has become highly prevalent worldwide since 2014. Recently, in an autopsy case involving fatal 25B-NBOMe intoxication, we found the postmortem increase of 25B-NBOMe concentration in the cardiac blood approximately 2 days after death. The aim of this study was to investigate the distribution of 25B-NBOMe and reproduce the postmortem redistribution using a rat model. Sprague-Dawley rats were killed 30 min after intraperitoneal injection of 25B-NBOMe (0...
June 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28643310/-establishment-of-a-prognostic-nomogram-to-predict-long-term-survival-in-non-metastatic-colorectal-cancer-patients
#10
Xiaojie Wang, Pan Chi, Huiming Lin, Xingrong Lu, Ying Huang, Zongbin Xu, Shenghui Huang, Yanwu Sun, Daoxiong Ye
OBJECTIVE: To establish a nomogram to predict long-term survival in non-metastatic colorectal cancer patients. METHODS: A retrospective analysis was conducted in patients with non-metastatic colorectal cancer who underwent radical surgery in the Department of Colorectal Surgery of Affiliated Union Hospital of Fujian Medical University between January 2000 and December 2014. Univariate and multivariate analyses on disease-free survival (DFS) were performed using the Cox proportional regression model...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643234/body-mass-disorders-in-healthy-short-children-and-in-children-with-growth-hormone-deficiency
#11
Paweł Tomaszewski, Katarzyna Milde, Anna Majcher, Beata Pyrżak, Gul Tiryaki-Sonmez, Brad J Schoenfeld
The aim of the study was to determine the degree of adiposity and the incidence of body mass disorders, including abdominal obesity, in healthy short children and children with growth hormone deficiency. The study included 134 short children (height < 10th percentile) aged 7-15. In this cohort there were 63 (31 boys and 32 girls) children without diagnosed hormonal disorders and 71 patients (35 boys and 36 girls) with growth hormone deficiency. Basic somatic features were assessed and the study participants were categorized according to the percentage of body fat (%FAT), body mass index (BMI), and waist-to-height ratio (WHtR)...
June 23, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28643192/on-the-kinetics-of-body-versus-end-evaporation-and-addition-of-supramolecular-polymers
#12
Nitin S Tiwari, Paul van der Schoot
The kinetics of the self-assembly of supramolecular polymers is dictated by how monomers, dimers, trimers etc., attach to and detach from each other. It is for this reasons that researchers have proposed a plethora of pathways to explain the kinetics of various self-assembling supramolecules, including sulfur, linear micelles, living polymers and protein fibrils. Recent observations hint at the importance of a hitherto ignored molecular aggregation pathway that we refer to as "body evaporation and addition"...
June 2017: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/28643068/effects-of-barbed-suture-during-robot-assisted-radical-prostatectomy-on-postoperative-tissue-damage-and-longitudinal-changes-in-lower-urinary-tract-outcome
#13
Nobuhiro Haga, Noriaki Kurita, Tomohiko Yanagida, Soichiro Ogawa, Michihiro Yabe, Hidenori Akaihata, Junya Hata, Yuichi Sato, Kei Ishibashi, Osamu Hasegawa, Yoshiyuki Kojima
OBJECTIVE: To compare the postoperative tissue damage and longitudinal changes in functional and patient-reported outcomes after vesicourethral anastomosis with barbed suture and nonbarbed suture in robot-assisted laparoscopic radical prostatectomy (RARP). MATERIALS AND METHODS: This was a prospective cohort study involving 88 consecutive patients who underwent RARP. These patients were categorized into the barbed suture group (n = 50) and the nonbarbed suture group (n = 38)...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28643066/solving-the-surgeon-ergonomic-crisis-with-surgical-exosuit
#14
Shanglei Liu, Daniel Hemming, Ran B Luo, Jessica Reynolds, Jonathan C Delong, Bryan J Sandler, Garth R Jacobsen, Santiago Horgan
INTRODUCTION: The widespread adoption of laparoscopic surgery has put new physical demands on the surgeon leading to increased musculoskeletal disorders and injuries. Shoulder, back, and neck pains are among the most common complaints experienced by laparoscopic surgeons. Here, we evaluate the feasibility and efficacy of a non-intrusive progressive arm support exosuit worn by surgeons under the sterile gown to reduce pain and fatigue during surgery. METHODS AND PROCEDURES: This is a prospective randomized crossover study approved by the Internal Review Board (IRB)...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28643024/automatic-seed-picking-for-brachytherapy-postimplant-validation-with-3d-ct-images
#15
Guobin Zhang, Qiyuan Sun, Shan Jiang, Zhiyong Yang, Xiaodong Ma, Haisong Jiang
PURPOSE: Postimplant validation is an indispensable part in the brachytherapy technique. It provides the necessary feedback to ensure the quality of operation. The ability to pick implanted seed relates directly to the accuracy of validation. To address it, an automatic approach is proposed for picking implanted brachytherapy seeds in 3D CT images. METHODS: In order to pick seed configuration (location and orientation) efficiently, the approach starts with the segmentation of seed from CT images using a thresholding filter which based on gray-level histogram...
June 22, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28642805/a-simple-method-for-hplc-retention-time-prediction-linear-calibration-using-two-reference-substances
#16
Lei Sun, Hong-Yu Jin, Run-Tao Tian, Ming-Juan Wang, Li-Na Liu, Liu-Ping Ye, Tian-Tian Zuo, Shuang-Cheng Ma
BACKGROUND: Analysis of related substances in pharmaceutical chemicals and multi-components in traditional Chinese medicines needs bulk of reference substances to identify the chromatographic peaks accurately. But the reference substances are costly. Thus, the relative retention (RR) method has been widely adopted in pharmacopoeias and literatures for characterizing HPLC behaviors of those reference substances unavailable. The problem is it is difficult to reproduce the RR on different columns due to the error between measured retention time (tR) and predicted tR in some cases...
2017: Chinese Medicine
https://www.readbyqxmd.com/read/28642585/how-postmortem-redistribution-of-mdma-in-acute-alcohol-mdma-combined-use-rats-change-under-effects-of-alcohol
#17
Man Liang, Jing Zhang, Na Zheng, Liang Liu
MDMA is often taken recreationally with alcohol as combined-use. The objective was to determine MDMA postmortem redistribution (PMR) and corresponding effects in combined-style under different storage conditions. Steps were 20%-mixture of alcohol-water for initial 4 weeks to Group-A&B and intragastric infusions of MDMA (150 mg/kg) to Group-A later; in the same time, drinking pure water to Group-C&D first and then MDMA-fed to Group-C. The sacrificed rats were kept under different conditions for 10-d, during which the body fluids and tissues were collected on 15 continuous time-points and then detected...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642557/smokeless-tobacco-a-substantial-risk-for-oral-potentially-malignant-disorders-in-south-asia
#18
Phillip Seenan, David Conway
Data sourcesMedline, the Science Citation Index (SCI) via Web of Science, Scopus, CINAHL, Global Index Medicus, Google Scholar and SLT-related reports of the International Agency for Research on Cancer and the National Cancer Institute of the United States.Study selectionObservational studies on the use of SLT and the risk of developing OPMDs in South Asian Populations.Data extraction and synthesisDuplicate selection of studies was undertaken with two reviewers undertaking data abstraction and quality assessment independently...
June 23, 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28642308/predicting-risk-of-undiagnosed-copd-development-and-validation-of-the-targetcopd-score
#19
Shamil Haroon, Peymane Adab, Richard D Riley, David Fitzmaurice, Rachel E Jordan
Chronic obstructive pulmonary disease (COPD) is greatly underdiagnosed worldwide and more efficient methods of case-finding are required. We developed and externally validated a risk score to identify undiagnosed COPD using primary care records.We conducted a retrospective cohort analysis of a pragmatic cluster randomised controlled case-finding trial in the West Midlands, UK. Participants aged 40-79 years with no prior diagnosis of COPD received a postal or opportunistic screening questionnaire. Those reporting chronic respiratory symptoms were assessed with spirometry...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28641984/bi-objective-approach-for-placing-ground-and-air-ambulance-base-and-helipad-locations-in-order-to-optimize-ems-response
#20
Milad Shahriari, Ali Bozorgi-Amiri, Shayan Tavakoli, Abolghasem Yousefi-Babadi
Shortening the travel time of patient transfer has clinical implications for many conditions such as cardiac arrest, trauma, stroke and STEMI. As resources are often limited precise calculations are needed. In this paper we consider the location problem for both ground and aerial emergency medical services. Given the uncertainty of when patients are in need of prompt medical attention we consider these demand points to be uncertain. We consider various ways in which ground and helicopter ambulances can work together to make the whole process go faster...
June 15, 2017: American Journal of Emergency Medicine
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