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https://www.readbyqxmd.com/read/28817383/combined-influence-of-ct-random-noise-and-hu-rsp-calibration-curve-nonlinearities-on-proton-range-systematic-errors
#1
Sébastien Brousmiche, Kevin Souris, Jonathan Orban de Xivry, John Aldo Lee, Benoit Macq, Joao Seco
Proton range random and systematic uncertainties are the major factors undermining the advantages of proton therapy, namely, a sharp dose falloff and a better dose conformality for lower doses in normal tissues. The influence of CT artifacts such as beam hardening or scatter can easily be understood and estimated due to their large-scale effects on the CT image, like cupping and streaks. In comparison, the effects of weakly-correlated stochastic noise are more insidious and less attention is drawn on them partly due to the common belief that they only contribute to proton range uncertainties and not to systematic errors thanks to some averaging effects...
August 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28816346/homocysteine-lowering-interventions-for-preventing-cardiovascular-events
#2
REVIEW
Arturo J Martí-Carvajal, Ivan Solà, Dimitrios Lathyris, Mark Dayer
BACKGROUND: Cardiovascular disease, which includes coronary artery disease, stroke and peripheral vascular disease, is a leading cause of death worldwide. Homocysteine is an amino acid with biological functions in methionine metabolism. A postulated risk factor for cardiovascular disease is an elevated circulating total homocysteine level. The impact of homocysteine-lowering interventions, given to patients in the form of vitamins B6, B9 or B12 supplements, on cardiovascular events has been investigated...
August 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28810998/delayed-diagnosis-of-acromegaly-in-the-context-of-post-traumatic-stress-disorder-due-to-symptoms-mimicking-known-psychotropic-medication-side-effects
#3
Ray-Bernard Portier, Afshin Afarin, Sara Pope
BACKGROUND: Acromegaly is caused by elevated secretion of human growth hormone, which is frequently because of intracranial tumors. This diagnosis is fairly uncommon with an incidence of 3 to 4 cases per million patients per year. We are presenting a case of acromegaly diagnosed in an active duty Chief Petty Officer. MATERIALS AND METHODS: A 38-year-old male Chief Petty Officer with no previous mental health diagnosis experienced post-traumatic stress disorder (PTSD)-like symptoms in early 2012 after deploying to Iraq and Afghanistan from 2010 to 2011...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810198/phthalate-metabolites-related-to-infertile-biomarkers-and-infertility-in-chinese-men
#4
Liangpo Liu, Heng Wang, Meiping Tian, Jie Zhang, Parinya Panuwet, Priya Esilda D'Souza, Dana Boyd Barr, Qingyu Huang, Yankai Xia, Heqing Shen
Although in vitro and in vivo laboratory studies have demonstrated androgen and anti-androgen effects on male reproduction from phthalate exposures, human studies still remain inconsistent. Therefore, a case-control study (n = 289) was conducted to evaluate the associations between phthalate exposures, male infertility risks, and changes in metabolomic biomarkers. Regional participants consisted of fertile (n = 150) and infertile (n = 139) males were recruited from Nanjing Medical University' affiliated hospitals...
August 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28809444/circannual-variation-of-mitotane-and-its-metabolites-plasma-levels-in-patients-with-adrenocortical-carcinoma
#5
Jessica Cusato, Silvia De Francia, Sarah Allegra, Simona Carrella, Elisa Pirro, Francesca Maria Piccione, Francesca De Martino, Anna Ferrero, Fulvia Claudia Daffara, Massimo Terzolo, Alfredo Berruti, Francesco Di Carlo, Marco Tampellini, Antonio D'Avolio
OBJECTIVES: Mitotane is the reference drug for the adrenocortical carcinoma treatment; its pharmacological activity seems to depend on drug transformation in two active metabolites: o,p'-DDE (dichlorodiphenylethene) and o,p'-DDA (dichlorodiphenylacetate). Mitotane and metabolites are lipophilic agents; thus, they tend to accumulate into adipose tissues (white and brown), which change their prevalence seasonally. Aim of the work was to evaluate mitotane and metabolites plasma levels variation over the year, in adrenocortical cancer patients treated with Lysodren(®) for at least 6 months...
August 15, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28807002/high-resolution-measurement-of-duf1220-domain-copy-number-from-whole-genome-sequence-data
#6
David P Astling, Ilea E Heft, Kenneth L Jones, James M Sikela
BACKGROUND: DUF1220 protein domains found primarily in Neuroblastoma BreakPoint Family (NBPF) genes show the greatest human lineage-specific increase in copy number of any coding region in the genome. There are 302 haploid copies of DUF1220 in hg38 (~160 of which are human-specific) and the majority of these can be divided into 6 different subtypes (referred to as clades). Copy number changes of specific DUF1220 clades have been associated in a dose-dependent manner with brain size variation (both evolutionarily and within the human population), cognitive aptitude, autism severity, and schizophrenia severity...
August 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28806681/human-biomonitoring-of-polycyclic-aromatic-hydrocarbonsand-metals-in-the-general-population-residing-near-the-municipal-solid-waste-incinerator-of-modena-italy
#7
Maria Giulia Gatti, Petra Bechtold, Laura Campo, Giovanna Barbieri, Giulia Quattrini, Andrea Ranzi, Sabrina Sucato, Luca Olgiati, Elisa Polledri, Michael Romolo, Laura Iacuzio, Giuliano Carrozzi, Paolo Lauriola, Carlo A Goldoni, Silvia Fustinoni
BACKGROUND AND OBJECTIVES: A cross-sectional biomonitoring study was carried out to investigate exposure to incinerator emission in relation to the body burden of selected biomarkers in the population living around the plant. METHODS: Approximately 500 people, aged 18-69 yrs, living within 4 km from the incinerator were randomly selected form the population register. Exposure was measured through fall-out maps of particulate matter (PM), used as tracer for incinerator emissions...
August 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28801780/a-case-of-acetaminophen-induced-acute-tubulointerstitial-nephritis-in-adult
#8
Dan Inoue, Ryosuke Usui, Kosaku Nitta, Minako Koike
We report a case of allergic acute tubulointerstitial nephritis (TIN) induced by acetaminophen in a 48-year-old Japanese man with no past medical history. Two days after receiving the non-steroidal anti-inflammatory drug (NSAID) loxoprofen for left shoulder pain, he developed cold symptoms such as fever and sore throat. He then took a 300 mg dose of acetaminophen three times a day and a 100 mg dose of minocycline hydrochloride twice a day for 7 days. Because there was no improvement in his symptoms, he consulted a local clinic again, where blood tests revealed renal insufficiency, and he was, then, referred to our hospital for evaluation of kidney function...
August 11, 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28801266/lipogels-responsive-to-near-infrared-light-for-the-triggered-release-of-therapeutic-agents
#9
Francisco Martín-Saavedra, Eduardo Ruiz-Hernández, Clara Escudero-Duch, Martin Prieto, Manuel Arruebo, Negar Sadeghi, Roel Deckers, Gert Storm, Wim E Hennink, Jesús Santamaría, Nuria Vilaboa
Here we report a composite system based on fibrin hydrogels that incorporate in their structure near-infrared (NIR) responsive nanomaterials and thermosensitive liposomes (TSL). Polymerized fibrin networks entrap simultaneously gold-based nanoparticles (NPs) capable of transducing NIR photon energy into heat, and lysolipid-incorporated TSL (LTSL) loaded with doxorubicin hydrochloride (DOX). NIR irradiation of the resulting hydrogels (referred to as "lipogels") with 808 nm laser light increased the temperature of the illuminated areas, leading to the release of the liposomal cargo...
August 8, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28793856/mining-sequence-variations-in-representative-polyploid-sugarcane-germplasm-accessions
#10
Xiping Yang, Jian Song, Qian You, Dev R Paudel, Jisen Zhang, Jianping Wang
BACKGROUND: Sugarcane (Saccharum spp.) is one of the most important economic crops because of its high sugar production and biofuel potential. Due to the high polyploid level and complex genome of sugarcane, it has been a huge challenge to investigate genomic sequence variations, which are critical for identifying alleles contributing to important agronomic traits. In order to mine the genetic variations in sugarcane, genotyping by sequencing (GBS), was used to genotype 14 representative Saccharum complex accessions...
August 9, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28793321/effects-of-combination-treatment-with-alendronate-and-raloxifene-on-skeletal-properties-in-a-beagle-dog-model
#11
Matthew R Allen, Erin McNerny, Mohammad Aref, Jason M Organ, Christopher L Newman, Brian McGowan, Tim Jang, David B Burr, Drew M Brown, Max Hammond, Paul R Territo, Chen Lin, Scott Persohn, Lei Jiang, Amanda A Riley, Brian P McCarthy, Gary D Hutchins, Joseph M Wallace
A growing number of studies have investigated combination treatment as an approach to treat bone disease. The goal of this study was to investigate the combination of alendronate and raloxifene with a particular focus on mechanical properties. To achieve this goal we utilized a large animal model, the beagle dog, used previously by our laboratory to study both alendronate and raloxifene monotherapies. Forty-eight skeletally mature female beagles (1-2 years old) received daily oral treatment: saline vehicle (VEH), alendronate (ALN), raloxifene (RAL) or both ALN and RAL...
2017: PloS One
https://www.readbyqxmd.com/read/28789933/radiation-protection-in-dental-radiology-recent-advances-and-future-directions
#12
V Tsapaki
Dental radiology uses X-ray technology to diagnose and design treatment of various clinical problems related to the oral cavity and surrounding tissues. As technology quickly evolves, there are numerous X-ray modalities using different tools in the attempt to best image and treat efficiently these diseases, disorders or other related clinical conditions. The reported numbers of dental X-rays, the fact that these may be under-reported in many countries and because dental X-rays are performed more on younger individuals, whose teeth and dentition are still developing, calls for increased need on radiation protection...
August 5, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28789716/in-vitro-antileishmanial-activity-and-iron-superoxide-dismutase-inhibition-of-arylamine-mannich-base-derivatives
#13
Alvaro Martin-Montes, Mery Santivañez-Veliz, Elsa Moreno-Viguri, Rubén Martín-Escolano, Carmen Jiménez-Montes, Catalina Lopez-Gonzalez, Clotilde Marín, Carmen Sanmartín, Ramón Gutiérrez Sánchez, Manuel Sánchez-Moreno, Silvia Pérez-Silanes
Leishmaniasis is one of the world's most neglected diseases, and it has a worldwide prevalence of 12 million. There are no effective human vaccines for its prevention, and treatment is hampered by outdated drugs. Therefore, research aiming at the development of new therapeutic tools to fight leishmaniasis remains a crucial goal today. With this purpose in mind, we present 20 arylaminoketone derivatives with a very interesting in vitro and in vivo efficacy against Trypanosoma cruzi that have now been studied against promastigote and amastigote forms of Leishmania infantum, Leishmania donovani and Leishmania braziliensis strains...
August 9, 2017: Parasitology
https://www.readbyqxmd.com/read/28780202/tailor-made-ge-doped-silica-glass-for-clinical-diagnostic-x-ray-dosimetry
#14
Amjad Alyahyawi, T Jupp, M Alkhorayef, D A Bradley
In the modern clinical practice of diagnostic radiology there is a growing demand for radiation dosimetry, it also being recognized that with increasing use of X-ray examinations additional population dose will result, accompanied by an additional albeit low potential for genetic consequences. At the doses typical of diagnostic radiology there is also a low statistical risk for cancer induction; in adhering to best practice, to be also implied is a low but non-negligible potential for deterministic sensitive organ responses, including in regard to the skin and eyes...
July 22, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28770975/paracetamol-acetaminophen-for-chronic-non-cancer-pain-in-children-and-adolescents
#15
REVIEW
Tess E Cooper, Emma Fisher, Brian Anderson, Nick Mr Wilkinson, David G Williams, Christopher Eccleston
BACKGROUND: Pain is a common feature of childhood and adolescence around the world, and for many young people, that pain is chronic. The World Health Organization guidelines for pharmacological treatments for children's persisting pain acknowledge that pain in children is a major public health concern of high significance in most parts of the world. While in the past, pain was largely dismissed and was frequently left untreated, views on children's pain have changed over time, and relief of pain is now seen as important...
August 2, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28766664/tetrahydrocurcumin-is-more-effective-than-curcumin-in-inducing-the-apoptosis-of-h22-cells-via-regulation-of-a-mitochondrial-apoptosis-pathway-in-ascites-tumor-bearing-mice
#16
Weihai Liu, Zhenbiao Zhang, Guosheng Lin, Dandan Luo, Hanbin Chen, Hongmei Yang, Jiali Liang, Yuhong Liu, Jianhui Xie, Ziren Su, Hongying Cao
Curcumin (CUR), a widely used food additive, is derived mainly from Curcuma species that has been applied traditionally for the treatment of various diseases, including hepatocellular carcinoma (HCC). However, its poor systemic bioavailability hampers its clinical application, which may be related to its wide metabolism. Tetrahydrocurcumin (THC) is a major metabolite of CUR and has been reported to have multiple biologic activities. We investigated, for the first time, the efficacy and associated mechanism of action of THC and CUR in a H22 ascites tumor-bearing model in mice...
August 2, 2017: Food & Function
https://www.readbyqxmd.com/read/28765731/combining-potent-statin-therapy-with-other-drugs-to-optimize-simultaneous-cardiovascular-and-metabolic-benefits-while-minimizing-adverse-events
#17
REVIEW
Kwang Kon Koh, Ichiro Sakuma, Kazunori Shimada, Toshio Hayashi, Michael J Quon
Hypercholesterolemia and hypertension are among the most important risk factors for cardiovascular (CV) disease. They are also important contributors to metabolic diseases including diabetes that further increase CV risk. Updated guidelines emphasize targeted reduction of overall CV risks but do not explicitly incorporate potential adverse metabolic outcomes that also influence CV health. Hypercholesterolemia and hypertension have synergistic deleterious effects on interrelated insulin resistance and endothelial dysfunction...
July 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28764792/deployment-and-use-of-mobile-phone-technology-for-real-time-reporting-of-fever-cases-and-malaria-treatment-failure-in-areas-of-declining-malaria-transmission-in-muheza-district-north-eastern-tanzania
#18
Filbert Francis, Deus S Ishengoma, Bruno P Mmbando, Acleus S M Rutta, Mwelecele N Malecela, Benjamin Mayala, Martha M Lemnge, Edwin Michael
BACKGROUND: Early detection of febrile illnesses at community level is essential for improved malaria case management and control. Currently, mobile phone-based technology has been commonly used to collect and transfer health information and services in different settings. This study assessed the applicability of mobile phone-based technology in real-time reporting of fever cases and management of malaria by village health workers (VHWs) in north-eastern Tanzania. METHODS: The community mobile phone-based disease surveillance and treatment for malaria (ComDSTM) platform, combined with mobile phones and web applications, was developed and implemented in three villages and one dispensary in Muheza district from November 2013 to October 2014...
August 1, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28762228/-a-systematic-review-and-meta-analysis-of-the-pros-and-cons-of-consuming-liquids-preoperatively
#19
Fang-Tzu Lin, Tsai-Rung Lin, Chia-Wei Liao, Shu-Hui Chen
BACKGROUND: Preoperative anesthesia long time fasting, may increase patient hemodynamic instability during surgery and may affect the patient's post-surgery electrolyte balance. No meta-analysis has been conducted to explore the effects of preoperative liquid intake amount on gastric fluid PH, gastric fluid volume, surgery inhalation of pulmonary complications, and patient self-perceptions quality of care systematic review and meta-analysis of the literature. PURPOSE: To assess the pros and cons of preoperative liquid intake using a systematic review of the literature...
August 2017: Hu Li za Zhi the Journal of Nursing
https://www.readbyqxmd.com/read/28757351/estimation-of-effective-dose-and-radiation-risk-in-pediatric-barium-studies-procedures
#20
A Sulieman, B Elhag, M Alkhorayef, E Babikir, K Theodorou, C Kappas, D Bradley
The objectives of this study are to assess pediatric radiation exposure in certain barium studies and to quantify the organ and effective doses and radiation risk resultant from patients' irradiation. A total of 69 pediatric barium studies for upper and lower gastrointestinal tract. Patients' radiation dose was quantified in terms of Entrance surface air kerma (ESAKs) using exposure parameters and DosCal software. Organ and effective doses (E) were extrapolated using national Radiological Protection Board software (NRPB-R279)...
July 21, 2017: Applied Radiation and Isotopes
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