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https://www.readbyqxmd.com/read/28351000/targeted-superparamagnetic-nanoparticles-coated-with-2-deoxy-d-gloucose-and-doxorubicin-more-sensitize-breast-cancer-cells-to-ionizing-radiation
#1
Jalil Pirayesh Islamian, Milad Hatamian, Negar Abbasi Aval, Mohammad Reza Rashidi, Asghar Mesbahi, Mohammad Mohammadzadeh, Mohammad Asghari Jafarabadi
INTRODUCTION: Nanoparticles are promising as a new approach to enhance chemo- radiotherapy efficiency in breast cancer mainly via targeted therapy. MATERIALS & METHODS: SKBR3 and T47D breast cancer cells were treated with superparamagnetic mesoporous hydroxyapatite nanocomposites (SPmHANs)conjugated with 1 μM doxorubicin and 0.5 mM 2-Deoxy-d-Glucose and irradiated with 1 and 2 Gy gamma rays in vitro. The treatment toxicity and also the apoptosis/necrosis ratio were measured by MTT assay and also ELISA cell death detection PLUS, respectively...
March 25, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28350844/isolation-and-characterization-of-alternatively-spliced-variants-of-the-mouse-sigma1-receptor-gene-sigmar1
#2
Ling Pan, David A Pasternak, Jin Xu, Mingming Xu, Zhigang Lu, Gavril W Pasternak, Ying-Xian Pan
The sigma1 receptor acts as a chaperone at the endoplasmic reticulum, associates with multiple proteins in various cellular systems, and involves in a number of diseases, such as addiction, pain, cancer and psychiatric disorders. The sigma1 receptor is encoded by the single copy SIGMAR1 gene. The current study identifies five alternatively spliced variants of the mouse sigma1 receptor gene using a polymerase chain reaction cloning approach. All the splice variants are generated by exon skipping or alternative 3' or 5' splicing, producing the truncated sigma1 receptor...
2017: PloS One
https://www.readbyqxmd.com/read/28350806/pharmacokinetics-of-a-single-1g-dose-of-azithromycin-in-rectal-tissue-in-men
#3
Fabian Y S Kong, Thusitha W Rupasinghe, Julie A Simpson, Lenka A Vodstrcil, Christopher K Fairley, Malcolm J McConville, Jane S Hocking
Chlamydia is the most common bacterial sexually transmitted infection among men who have sex with men. Repeat infection following treatment with 1g azithromycin is common and treatment failure of up to 22% has been reported. This study measured the pharmacokinetics of azithromycin in rectal tissue in men following a single 1g dose to assess whether azithromycin reaches the rectal site in adequate concentrations to kill chlamydia. Ten healthy men took a single oral dose of 1g azithromycin and provided nine self-collected swabs and one blood sample over 14 days...
2017: PloS One
https://www.readbyqxmd.com/read/28350522/the-influences-of-slco1b1-and-abcb1-genotypes-on-the-pharmacokinetics-of-simvastatin-in-relation-to-cyp3a4-inhibition
#4
Fen Jiang, Jong-Yeol Choi, Ju-Hyun Lee, Sunae Ryu, Ze-Won Park, Jong-Gu Lee, Han-Sung Na, Seok-Yong Lee, Woo-Yong Oh, Myeon-Woo Chung, Seung-Eun Choi
AIM: To investigate the combined effects of SLCO1B1 and ABCB1 genotypes on the pharmacokinetics of simvastatin and its active metabolite simvastatin acid, in relation to CYP3A4 inhibition. METHODS: We conducted a single-dose pharmacokinetic study of simvastatin in 26 healthy volunteers screened for their SLCO1B1 c.521T>C and ABCB1 c.1236C>T-2677G>T-3435C>T genotypes, with and without amlodipine pretreatment. The genetic effects and drug-interaction effect on simvastatin pharmacokinetic parameters were analyzed using a linear-mixed model...
March 28, 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28347131/preclinical-in-vivo-cancer-straightway-to-patients
#5
Marion de Jong, Stephen Mather, Theodosia Maina
Detection of useful cellular targets has strongly stimulated personalized tumor-targeted imaging and therapy approaches, also involving synthesis and evaluation of nuclear imaging probes with potential for clinical applications. Reviews of preclinical and translational studies concerning such probes, including radiolabeled antibodies, nanobodies, affibodies, peptides, small molecule inhibitors, and nanoparticles, are presented in this issue. As most tracers described in these articles have been developed for the field of cancer imaging and radionuclide therapy, the current article on preclinical studies will focus on cancer research as well...
June 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28346912/optimizing-the-dose-of-erythropoietin-required-to-prevent-acute-ventilation-induced-cerebral-white-matter-injury-in-preterm-lambs
#6
Kyra Y Y Chan, Domenic A LaRosa, Mary Tolcos, Anqi Li, Valerie A Zahra, Graeme R Polglase, Samantha K Barton
Erythropoietin (EPO) is being trialed in preterm neonates for neuroprotection. We have recently demonstrated that a single high bolus dose (5,000 IU/kg) of recombinant human EPO amplified preterm lung and brain ventilation-induced injury. We aimed to determine the optimal dose of EPO to reduce ventilation-induced cerebral white matter inflammation and injury in preterm lambs. Lambs (0.85 gestation) were ventilated with an injurious strategy for 15 min followed by conventional ventilation for 105 min. Lambs were randomized to no treatment (VENT; n = 8) or received a bolus dose of EPO (EPREX®): 300 IU/kg (EPO 300; n = 5), 1,000 IU/kg (EPO 1,000; n = 5), or 3,000 IU/kg (EPO 3,000; n = 5)...
March 28, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28346570/tolerance-and-long-term-efficacy-of-polyethylene-glycol-4000-forlax%C3%A2-compared-to-lactulose-in-elderly-patients-with-chronic-constipation
#7
P Chassagne, P Ducrotte, P Garnier, H Mathiex-Fortunet
OBJECTIVES: To assess the tolerance and potential nutritional consequences of long-term repeated doses of PEG 4000 (10 to 30 g/day) in elderly patients with chronic constipation as compared to lactulose (10-30 g/day). DESIGN: Single blind, randomised, multicentre, parallel group comparative study. SETTING: Community-dwelling patients and nursing homes residents aged 70 years and older with a history of chronic constipation. Treatment intervention: PEG 4000 (10-30 g/day) or lactulose (10-30 g/day) for six months...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28346569/vitamin-d-supplementation-in-nursing-home-residents-randomized-single-cholecalciferol-loading-protocol-vs-individualized-loading-dose-regimen
#8
C Delomas, M Hertzog, T Vogel, P O Lang
OBJECTIVE: To assess the efficacy and safety of a single cholecalciferol loading protocol in nursing home (NH) residents taking no VitD supplementation at regular basis. DESIGN: Randomized single-blind controlled study. SETTING: One NH. PARTICIPANTS: All residents. INTERVENTION: From March 21st to May 19th, 2015, NH residents were randomly assigned to either 4x100'000IU to be taken every 2 weeks (treatment group) or an individualized regimen according to baseline 25(OH)VitD level (control group)...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28346568/impact-of-3-monthly-vitamin-d-supplementation-plus-exercise-on-survival-after-surgery-for-osteoporotic-hip-fracture-in-adult-patients-over-50-years-a-pragmatic-randomized-partially-blinded-controlled-trial
#9
A Laiz, J Malouf, A Marin, V Longobardi, J de Caso, J Farrerons, J Casademont
OBJECTIVE: To determine whether 3-monthly supplementation of an oral vitamin D widely used in Spain (calcifediol) plus daily exercise could influence survival at one and four years after surgery for osteoporotic hip fracture. DESIGN: A pragmatic, randomized, partially single-blind placebo-controlled study. SETTING: Patients admitted to a tertiary university hospital for acute hip fracture. PARTICIPANTS: 675 healthy adult patients undergoing surgery for osteoporotic hip fracture were recruited from January 2004 to December 2007...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28346387/oprm1-c-118a-g-polymorphism-and-duration-of-morphine-treatment-associated-with-morphine-doses-and-quality-of-life-in-palliative-cancer-pain-settings
#10
Aline Hajj, Lucine Halepian, Nada El Osta, Georges Chahine, Joseph Kattan, Lydia Rabbaa Khabbaz
Despite increased attention on assessment and management, pain remains the most persistent symptom in patients with cancer, in particular in end-of-life settings, with detrimental impact on their quality-of-life (QOL). We conducted this study to evaluate the added value of determining some genetic and non-genetic factors to optimize cancer pain treatment. Eighty-nine patients were included in the study for the evaluation of palliative cancer pain management. The regression analysis showed that age, OPRM1 single nucleotide polymorphism (SNP), as well as the duration of morphine treatment were significantly associated with morphine doses at 24 h (given by infusion pump; p = 0...
March 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28345998/pharmacokinetics-of-a-single-dose-of-voriconazole-administered-orally-with-and-without-food-to-red-tailed-hawks-buteo-jamaicensus
#11
Ruth A Parsley, Lisa A Tell, Ronette Gehring
OBJECTIVE To determine the pharmacokinetics of voriconazole administered PO with or without food to red-tailed hawks (Buteo jamaicensus) and whether any observed variability could be explained by measured covariates to inform dose adjustments. ANIMALS 7 adult red-tailed hawks. PROCEDURES In a crossover study design, hawks were randomly assigned to first receive voriconazole (15 mg/kg, PO) injected into a dead mouse (n = 3; fed birds) or without food (4; unfed birds). Sixteen days later, treatments were reversed...
April 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28345861/identification-of-gene-transcription-start-sites-and-enhancers-responding-to-pulmonary-carbon-nanotube-exposure-in-vivo
#12
Jette Bornholdt, Anne Thoustrup Saber, Berit Lilje, Mette Boyd, Mette Jørgensen, Yun Chen, Morana Vitezic, Nicklas Raun Jacobsen, Sarah Søs Poulsen, Trine Berthing, Simon Bressendorff, Kristoffer Vitting-Seerup, Robin Andersson, Karin Sørig Hougaard, Carole L Yauk, Sabina Halappanavar, Håkan Wallin, Ulla Vogel, Albin Sandelin
Increased use of nanomaterials in industry, medicine and consumer products has raised concerns over their toxicity. To ensure safe use of nanomaterials, understanding their biological effects at the molecular level is crucial. In particular, the regulatory mechanisms responsible for the cascade of genes activated by nanomaterial exposure are not well characterized. To this end, we profiled the genome-wide usage of gene transcription start sites and linked active enhancer regions in lungs of C57BL/6 mice 24h after intratracheal instillation of a single dose of the multiwalled carbon nanotube Mitsui-7...
March 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28345769/best-practice-policy-statement-on-urodynamic-antibiotic-prophylaxis-in-the-non-index-patient
#13
REVIEW
Anne P Cameron, Lysanne Campeau, Benjamin M Brucker, J Quentin Clemens, Gregory T Bales, Michael E Albo, Michael J Kennelly
AIMS: Antibiotic prophylaxis before urodynamic testing (UDS) is widely utilized to prevent urinary tract infection (UTI) with only limited guidance. The Society of Urodynamics, Female Pelvic Medicine, and Urogenital Reconstruction (SUFU) convened a Best Practice Policy Panel to formulate recommendations on the urodynamic antibiotic prophylaxis in the non-index patient. METHODS: Recommendations are based on a literature review and the Panel's expert opinion, with all recommendations graded using the Oxford grading system...
March 27, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28345547/contrast-dose-and-radiation-dose-reduction-in-abdominal-enhanced-computerized-tomography-scans-with-single-phase-dual-energy-spectral-computerized-tomography-mode-for-children-with-solid-tumors
#14
Tong Yu, Jun Gao, Zhi-Min Liu, Qi-Feng Zhang, Yong Liu, Ling Jiang, Yun Peng
BACKGROUND: Contrast dose and radiation dose reduction in computerized tomography (CT) scan for adult has been explored successfully, but there have been few studies on the application of low-concentration contrast in pediatric abdominal CT examinations. This was a feasibility study on the use of dual-energy spectral imaging and adaptive statistical iterative reconstruction (ASiR) for the reduction of radiation dose and iodine contrast dose in pediatric abdominal CT patients with solid tumors...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28345307/quality-indicators-for-early-stage-hodgkin-s-lymphoma
#15
Daniel E Roos, Hui C Tee
INTRODUCTION: The purpose of this project was to devise simple, practicable quality indicators (QIs) for the treatment of early stage (I-II) Hodgkin's lymphoma (ESHL), and to test their applicability retrospectively at a single large teaching hospital. METHODS: Of the available treatment guidelines, we chose the two eviQ (evidence and Quality, Cancer Institute New South Wales) documents first published in early 2012 (updated in 2015) for ESHL favourable and ESHL unfavourable (based upon German Hodgkin Study Group practice) as being most relevant to the Australian setting, and selected nine QIs from them viz...
March 27, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28345021/oncolytic-group-b-adenovirus-enadenotucirev-mediates-non-apoptotic-cell-death-with-membrane-disruption-and-release-of-inflammatory-mediators
#16
Arthur Dyer, Ying Di, Hugo Calderon, Sam Illingworth, Gray Kueberuwa, Alison Tedcastle, Phil Jakeman, Suet Lin Chia, Alice Brown, Michael A Silva, David Barlow, John Beadle, Terry Hermiston, David J P Ferguson, Brian Champion, Kerry D Fisher, Leonard W Seymour
Enadenotucirev (EnAd) is a chimeric group B adenovirus isolated by bioselection from a library of adenovirus serotypes. It replicates selectively in and kills a diverse range of carcinoma cells, shows effective anticancer activity in preclinical systems, and is currently undergoing phase I/II clinical trials. EnAd kills cells more quickly than type 5 adenovirus, and speed of cytotoxicity is dose dependent. The EnAd death pathway does not involve p53, is predominantly caspase independent, and appears to involve a rapid fall in cellular ATP...
March 17, 2017: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/28344998/low-dose-liver-targeted-gene-therapy-for-pompe-disease-enhances-therapeutic-efficacy-of-ert-via-immune-tolerance-induction
#17
Sang-Oh Han, Giuseppe Ronzitti, Benjamin Arnson, Christian Leborgne, Songtao Li, Federico Mingozzi, Dwight Koeberl
Pompe disease results from acid α-glucosidase (GAA) deficiency, and enzyme replacement therapy (ERT) with recombinant human (rh) GAA has clinical benefits, although its limitations include the short half-life of GAA and the formation of antibody responses. The present study compared the efficacy of ERT against gene transfer with an adeno-associated viral (AAV) vector containing a liver-specific promoter. GAA knockout (KO) mice were administered either a weekly injection of rhGAA (20 mg/kg) or a single injection of AAV2/8-LSPhGAA (8 × 10(11) vector genomes [vg]/kg)...
March 17, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28344958/perioperative-administration-of-propranolol-to-women-undergoing-ovarian-cancer-surgery-a-pilot-study
#18
Hye-In Jang, Soo-Hyun Lim, Yoo-Young Lee, Tae-Joong Kim, Chel Hun Choi, Jeong-Won Lee, Byoung-Gie Kim, Duk-Soo Bae
OBJECTIVE: This study was done to evaluate whether perioperative propranolol (ß-blocker) in ovarian cancer patients undergoing debulking surgery reduced perioperative tumor growth induced by surgical stress. METHODS: This was a prospective randomized single institution analysis. The primary objective was to compare the changes in CA 125 level (changes between preoperation day 2 and postoperative day 7). As a study arm, patients received a low dose of propranolol 40 mg/day (4×10 mg) starting two days before surgery and 40 mg twice daily for three days following surgery...
March 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28344789/a-ppar-gamma-agonist-protects-from-radiation-induced-intestinal-toxicity
#19
Monica Mangoni, Mariangela Sottili, Chiara Gerini, Isacco Desideri, Cinzia Bastida, Stefania Pallotta, Francesca Castiglione, Pierluigi Bonomo, Icro Meattini, Daniela Greto, Sabrina Cappelli, Lucia Di Brina, Mauro Loi, Giampaolo Biti, Lorenzo Livi
OBJECTIVE: Because of its anti-inflammatory, anti-fibrotic, anti-apoptotic and anti-neoplastic properties, the PPAR-γ agonist rosiglitazone is an interesting drug for investigating for use in the prevention and treatment of radiation-induced intestinal damage. We aimed to evaluate the radioprotective effect of rosiglitazone in a murine model of acute intestinal damage, assessing whether radioprotection is selective for normal tissues or also occurs in tumour cells. METHODS: Mice were total-body irradiated (12 Gy), with or without rosiglitazone (5 mg/kg/day)...
March 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28344760/severe-pulmonary-hypertension-in-aging-female-apolipoprotein-e-deficient-mice-is-rescued-by-estrogen-replacement-therapy
#20
Soban Umar, Rod Partow-Navid, Gregoire Ruffenach, Andrea Iorga, Shayan Moazeni, Mansoureh Eghbali
BACKGROUND: Apolipoprotein E (ApoE) is a multifunctional protein, and its deficiency leads to the development of atherosclerosis in mice. Patients with pulmonary hypertension (PH) have reduced expression of ApoE in lung tissue. ApoE is known to inhibit endothelial and smooth muscle cell proliferation and has anti-inflammatory and anti-platelet aggregation properties. Young ApoE-deficient mice have been shown to develop PH on high fat diet. The combined role of female sex and aging in the development of PH has not been investigated before...
2017: Biology of Sex Differences
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