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https://www.readbyqxmd.com/read/28347132/radiolabeled-peptides-current-and-new-perspectives
#1
Marta Opalinska, Alicja Hubalewska-Dydejczyk, Anna Sowa-Staszczak
Radiolabeled peptides have been the subject of research for over 20 years and during that time possibility/variety of peptide receptor imaging and later targeted radiotherapy increased significantly. The targeted receptors belong to the large family of G-protein-coupled receptors or tyrosine kinases receptors partially connected with them. They both regulate large signaling networks, control multiple cell functions and are implicated in many diseases including cancers. The essential feature of peptides used in nuclear medicine involves their ability to binding with high affinity and specify to their receptors overexpressed on tumor cells...
June 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28347131/preclinical-in-vivo-cancer-straightway-to-patients
#2
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/28346862/communication-about-dying-death-and-bereavement-a-systematic-review-of-children-s-literature
#3
Marina N F Arruda-Colli, Meaghann S Weaver, Lori Wiener
BACKGROUND: Children's books have the potential to facilitate communication about death for children living with a serious illness and for children coping with the death of a loved one. OBJECTIVES: This study examines the content of children's literature relevant to the topic of dying and death and identifies books providers can share with children and their families. DESIGN: A search of children's literature was conducted using four electronic databases and one additional search engine using the word "Death" or "Dying...
March 27, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28346670/neospora-caninum-in-beef-herds-in-new-south-wales-australia-2-analysis-of-risk-factors
#4
B J Moloney, C Heuer, P D Kirkland
OBJECTIVE: To determine the influence of farm-level and animal-level factors on the seroprevalence of antibodies to Neospora caninum and associations between seropositivity and reproductive outcomes. METHODS: A questionnaire for a cross-sectional survey was posted to the 63 properties with a herd size ≥50 beef breeding cows that had participated in a previous seroprevalence study. Correspondence analysis, which does not appear to have been used previously in any Australian studies of livestock diseases, was used in conjunction with logistic regression to analyse the data...
April 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28346249/usefulness-of-68ga-dota-rgd-%C3%AE-v%C3%AE-3-pet-ct-imaging-in-thyroglobulin-elevation-with-negative-iodine-scintigraphy
#5
Rakhee Vatsa, Jaya Shykla, Bhagwant Rai Mittal, Priya Bhusari, Apurva Sood, Rajender Kumar Basher, Anish Bhattacharya
TENIS (thyroglobulin elevation with negative iodine scintigraphy) syndrome in patients with differentiated thyroid carcinoma is not a rare finding. In such patients, F-FDG PET/CT can help in disease evaluation. RGD tripeptide, used for imaging angiogenesis, may also help in disease detection in patients with negative radioiodine whole-body scan. We present 1 such case in whom Ga-RGD tripeptide imaging was helpful in disease detection in the setting of negative radioiodine whole-body scan.
March 24, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28346248/68ga-psma-pet-ct-in-osteosarcoma-in-fibrous-dysplasia
#6
Arun Sasikumar, Ajith Joy, M R A Pillai, Tony M Alex, Geetha Narayanan
Fibrous dysplasia (FD) is a benign bone lesion with a rare but potential for malignant transformation. Neither Tc-MDP nor F-FDG PET/CT can differentiate between FD and areas of malignant transformation in FD. We described a case of osteosarcoma developing in FD with selective uptake of tracer in malignant transformation areas demonstrated on a Ga-PSMA PET/CT scan. Our case highlights the ability of Ga-PSMA PET/CT to map tumor neoangiogenesis in osteosarcoma arising in FD, which can have potential implications in prognostication, possibility of antiangiogenesis-based therapeutic options, and in response assessment following chemotherapy...
March 24, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28346222/sign-determination-methods-for-the-respiratory-signal-in-data-driven-pet-gating
#7
Ottavia Bertolli, Simon Arridge, Scott D Wollenweber, Charles W Stearns, Brian F Hutton, Kris Thielemans
Patient respiratory motion during PET image acquisition leads to blurring in the reconstructed images and may cause significant artifacts, resulting in decreased lesion detectability, inaccurate standard uptake value calculation and incorrect treatment planning in radiation therapy. To reduce these effects data can be regrouped into (nearly) 'motion-free' gates prior to reconstruction by selecting the events with respect to the breathing phase. This gating procedure therefore needs a respiratory signal: on current scanners it is obtained from an external device, whereas with data driven (DD) methods it can be directly obtained from the raw PET data...
March 27, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28346078/molecular-dynamics-simulation-of-three-plastic-additives-diffusion-in-polyethylene-terephthalate
#8
Bo Li, Zhi-Wei Wang, Qin-Bao Lin, Chang-Ying Hu
Accurate diffusion coefficient data of additives in polymer is of paramount importance for estimating the migration of the additives over time. In this article it is shown how this diffusion coefficient can be estimated for three plastic additives [2-(2'-hydroxy-5'-methylphenyl) (UV-P), 2, 6-di-tert-butyl-4-methylphenol (BHT) and di-(2-ethylhexyl) phthalate (DEHP)] in polyethylene terephthalate (PET) using the molecular dynamics (MD) simulation method. MD simulations were performed at temperatures of 293-433 K...
March 27, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28345873/impact-of-semiconducting-perylene-diimide-nanoparticle-size-on-lymph-node-mapping-and-cancer-imaging
#9
Zhen Yang, Rui Tian, Jinjun Wu, Quli Fan, Bryant C Yung, Gang Niu, Orit Jacobson, Zhantong Wang, Gang Liu, Guocan Yu, Wei Huang, Jibin Song, Xiaoyuan Chen
Semiconducting molecules of perylene diimide (PDI) with strong light absorption property in the near-infrared region and good biocompatibility have received increasing attention in the field of theranostics, especially as photoacoustic (PA) imaging agents. Herein, we report a series of [64Cu]-labeled PDI nanoparticles (NPs) of different sizes (30, 60, 100 and 200 nm) as dual positron emission tomography (PET) and PA imaging probes and photothermal therapy agents. The precise size control of the PDI NPs can be achieved by adjusting the initial concentration of PDI molecules in the self-assembly process, and the photophysical property of different sized PDI NPs was studied in detail...
March 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28345871/in-vivo-targeting-and-positron-emission-tomography-imaging-of-tumor-with-intrinsically-radioactive-metal-organic-frameworks-nanomaterials
#10
Daiqin Chen, Dongzhi Yang, Casey Dougherty, Weifei Lu, Hongwei Wu, Xianran He, Ting Cai, Marcian E Van Dort, Brian D Ross, Hao Hong
Nanoscale metal-organic frameworks (nMOF) materials represent an attractive tool for various biomedical applications. Due to the chemical versatility, enormous porosity, and tunable degradability of nMOFs, they have been adopted as carriers for delivery of imaging and/or therapeutic cargos. However, the relatively low stability of most nMOFs has limited practical in vivo applications. Here we report the production and characterization of an intrinsically radioactive UiO-66 nMOF (89Zr-UiO-66) with incorporation of positron-emitting isotope zirconium-89 (89Zr)...
March 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28345501/evaluating-the-submission-of-digital-images-as-a-method-of-surveillance-for-ixodes-scapularis-ticks
#11
J K Koffi, J Savage, K Thivierge, L R Lindsay, C Bouchard, Y Pelcat, N H Ogden
Widespread access to the internet is offering new possibilities for data collection in surveillance. We explore, in this study, the possibility of using an electronic tool to monitor occurrence of the tick vector of Lyme disease, Ixodes scapularis. The study aimed to compare the capacity for ticks to be identified in web-based submissions of digital images/photographs, to the traditional specimen-based identification method used by the provincial public health laboratory in Quebec, Canada. Forty-one veterinary clinics participated in the study by submitting digital images of ticks collected from pets via a website for image-based identification by an entomologist...
March 27, 2017: Parasitology
https://www.readbyqxmd.com/read/28345352/metal-free-photoinduced-electron-transfer-atom-transfer-radical-polymerization-integrated-with-bio-inspired-polydopamine-chemistry-as-a-green-strategy-for-surface-engineering-of-magnetic-nanoparticles
#12
Yang Yang, Xuegang Liu, Gang Ye, Shan Zhu, Zhe Wang, Xiaomei Huo, Krzysztof Matyjaszewski, Yuexiang Lu, Jing Chen
Developing green and efficient technologies for surface modification of magnetic nanoparticles (MNPs) is of crucial importance for their biomedical and environmental applications. This study reports, for the first time, a novel strategy by integrating metal-free photoinduced electron transfer-atom transfer radical polymerization (PET-ATRP) with the bio-inspired polydopamine (PDA) chemistry for controlled architecture of functional polymer brushes from MNPs. Conformal PDA encapsulation layers were initially generated on the surfaces of MNPs, which served as the protective shells while providing an ideal platform for tethering 2-bromo-2-phenylacetic acid (BPA), a highly efficient initiator...
March 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28344897/testing-of-microsatellite-multiplexes-for-individual-identification-of-cape-parrots-poicephalus-robustus-paternity-testing-and-monitoring-trade
#13
Willem G Coetzer, Colleen T Downs, Mike R Perrin, Sandi Willows-Munro
BACKGROUND: Illegal trade in rare wildlife species is a major threat to many parrot species around the world. Wildlife forensics plays an important role in the preservation of endangered or threatened wildlife species. Identification of illegally harvested or traded animals through DNA techniques is one of the many methods used during forensic investigations. Natural populations of the South African endemic Cape Parrot (Poicephalus robustus) are negatively affected by the removal of eggs and chicks for the pet trade...
2017: PeerJ
https://www.readbyqxmd.com/read/28344769/application-of-antibodies-to-recombinant-heat-shock-protein-70-in-immunohistochemical-diagnosis-of-mycobacterium-avium-subspecies-paratuberculosis-in-tissues-of-naturally-infected-cattle
#14
Julius Boniface Okuni, David Patrick Kateete, Moses Okee, Anna Nanteza, Moses Joloba, Lonzy Ojok
BACKGROUND: Detection of Mycobacterium avium subspecies paratuberculosis (MAP) infection is key to the control of Johne's disease. Immunohistochemistry is one of the methods of detection of MAP infection in tissues. However, unavailability of commercial antibodies that can detect the organism is a limiting factor for the use of immunohistochemistry. This study was aimed at developing an immunohistochemistry method to diagnose MAP in infected tissues using antibodies against MAP recombinant heat shock protein 70kd...
2017: Irish Veterinary Journal
https://www.readbyqxmd.com/read/28344551/construction-and-analysis-of-weighted-brain-networks-from-sice-for-the-study-of-alzheimer-s-disease
#15
Jorge Munilla, Andrés Ortiz, Juan M Górriz, Javier Ramírez
Alzheimer's Disease (AD) is the most common neurodegenerative disease in elderly people, and current drugs, unfortunately, do not represent yet a cure but only slow down its progression. This is explained, at least in part, because the understanding of the neurodegenerative process is still incomplete, being sometimes mistaken, particularly at the first steps of the illness, with the natural aging process. A better identification of how the functional activity deteriorates is thus crucial to develop new and more effective treatments...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/28343989/social-interaction-food-scent-or-toys-a-formal-assessment-of-domestic-pet-and-shelter-cat-felis-silvestris-catus-preferences
#16
Kristyn R Vitale Shreve, Lindsay R Mehrkam, Monique A R Udell
Domestic cats (Felis silvestris catus) engage in a variety of relationships with humans and can be conditioned to engage in numerous behaviors using Pavlovian and operant methods Increasingly cat cognition research is providing evidence of their complex socio-cognitive and problem solving abilities. Nonetheless, it is still common belief that cats are not especially sociable or trainable. This disconnect may be due, in part, to a lack of knowledge of what stimuli cats prefer, and thus may be most motivated to work for...
March 23, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28343598/incremental-prognostic-value-of-global-longitudinal-strain-and-18f-fludeoxyglucose-positron-emission-tomography-in-patients-with-systemic-sarcoidosis
#17
Brett W Sperry, Ahmed Ibrahim, Kazuaki Negishi, Tomoko Negishi, Parag Patel, Zoran B Popović, Daniel Culver, Richard Brunken, Thomas H Marwick, Balaji Tamarappoo
In independent studies, abnormal global longitudinal strain (GLS) and myocardial inflammation or scar detected by 18F-fludeoxyglucose positron emission tomography (FDG-PET) are associated with poor prognosis among patients with high likelihood for cardiac sarcoidosis. However, commonly used imaging modalities have not been evaluated in the same population. Our goals were to examine the relation between GLS and FDG-PET, and to evaluate the incremental prognostic value of these imaging techniques for predicting major adverse cardiac events (MACE) in patients suspected to have cardiac sarcoidosis...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28343327/osteolytic-variant-poems-syndrome-an-uncommon-presentation-of-osteosclerotic-myeloma
#18
Michael S Clark, Benjamin M Howe, Katrina N Glazebrook, Michelle L Mauermann, Stephen M Broski
Polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes (POEMS) syndrome, a form of osteosclerotic myeloma, is a multisystem disease related to a monoclonal plasma cell proliferative disorder. Osseous lesions are most commonly sclerotic on radiographs and computed tomography (CT), demonstrate low T1 and T2 signal intensity on magnetic resonance imaging (MRI), and have variable degrees of avidity on positon emission tomography (PET) imaging using 18-fluorodeoxyglucose ((18)F-FDG). We present three cases of POEMS syndrome manifesting as osteolytic lesions with indolent features, including well-defined thin sclerotic rims, no cortical disruption or periosteal reaction, no associated soft-tissue mass, and a periarticular location, all features that could lead to misinterpretation as benign bone lesions...
March 25, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28343234/serum-endocan-as-a-predictive-marker-for-decreased-urine-volume-in-peritoneal-dialysis-patients
#19
Satoru Oka, Yoko Obata, Shuntaro Sato, Kenta Torigoe, Miki Sawa, Shinichi Abe, Kumiko Muta, Yuki Ota, Mineaki Kitamura, Satoko Kawasaki, Misaki Hirose, Tadashi Uramatsu, Hiroshi Mukae, Tomoya Nishino
BACKGROUND Endocan is expressed in vascular endothelial cells, and its expression is enhanced following endothelial injury via inflammatory cytokines. Subsequently, endocan is secreted into the circulation. Thus, serum endocan levels are considered a marker of endothelial injury. However, to the best of our knowledge, no data on the serum endocan levels in peritoneal dialysis (PD) patients are available. MATERIAL AND METHODS This study included 21 PD patients who underwent peritoneal equilibration test (PET) more than once between 2011 and 2015...
March 26, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28343132/probing-polarity-of-flame-retardants-and-correlating-with-interaction-between-flame-retardants-and-pet-fiber
#20
Shuo Chang, Xiang Zhou, Zhiqi Xing, Tianmin Tu
The empirical polarity parameter ET(30) was determined for polyethylene terephthalate (PET) fiber and five phosphorus flame retardants by UV-Vis absorption spectrum of solvatochromic probe. To investigate the interaction between flame retardant and PET fiber during the finishing process, the partition coefficients K of these flame retardants between water and PET fiber were determined and an interesting linear relationship between lnK and ET(30) of the flame retardants was obtained, suggesting ET(30) is definitely an excellent estimation of the interaction of flame retardants with PET...
March 11, 2017: Journal of Colloid and Interface Science
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