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https://www.readbyqxmd.com/read/29894497/imaging-c-met-expression-using-18f-labeled-binding-peptide-in-human-cancer-xenografts
#1
Weihua Li, Hongqun Zheng, Jiankai Xu, Shaodong Cao, Xiuan Xu, Peng Xiao
OBJECTIVES: c-Met is a receptor tyrosine kinase shown inappropriate expression and actively involved in progression and metastasis in most types of human cancer. Development of c-Met-targeted imaging and therapeutic agents would be extremely useful. Previous studies reported that c-Met-binding peptide (Met-pep1, YLFSVHWPPLKA) specifically targets c-Met receptor. Here, we evaluated 18F-labeled Met-pep1 for PET imaging of c-Met positive tumor in human head and neck squamous cell carcinoma (HNSCC) xenografted mice...
2018: PloS One
https://www.readbyqxmd.com/read/29886750/can-incidental-vascular-calcifications-at-mammography-be-used-as-a-screening-biomarker-for-heart-and-kidney-disease
#2
Damla Erbil, Emine M Onal, Cagri Demirel, Alan A Sag, Tuncay Dagel, Baris Afsar, Adrian Covic, Mehmet Kanbay
Mammography is a screening test with extensive international application and financial infrastructure promoting accessibility and affordability. Designed specifically to detect microcalcifications, mammography is powered to detect calcifications in vessel walls. Breast arterial calcifications (BAC) are one of the most common incidental findings documented by mammography. This review considers the literature regarding BAC in relation to cardiovascular disease (CVD) and its risk factors. The aim is to assess the possibility of using BAC as an early surrogate imaging biomarker of CVD...
January 1, 2018: Angiology
https://www.readbyqxmd.com/read/29848933/clinical-outcomes-with-transcatheter-aortic-valve-implantation-at-a-single-cardiac-center-in-saudi-arabia
#3
Faisal Owdah Alatawi, Reda A Abuelatta, Ahmed B AlAhmedi, Ibraheem H Alharbi, Saleh S Alghamdi, Amal A Sakrana, Osama A Alamodi, Hesham A Naeim
BACKGROUND: Transcatheter aortic valve implantation (TAVI) has been recognized as a valid alternative to surgery for severe aortic valve stenosis (AS) in high-risk surgical patients. OBJECTIVE: Determine first-year clinical outcomes for TAVI at Madinah Cardiac Center (MMC) in Saudi Arabia. DESIGN: Retrospective, analytical cross-sectional. SETTING: Tertiary cardiac care center. PATIENTS AND METHODS: All patients who underwent TAVI for severe AS between February 2013 and December 2016 were included...
May 2018: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/29757668/a-case-of-parasitic-twinning-or-caudal-duplication-in-a-dog
#4
Janet A Grimes, Adrien-Maxence Hespel, Robert C Cole, A Ray Dillon
A 6 mo old 13.5 kg (29.7 lb) male intact American Staffordshire terrier was evaluated for a history of supernumerary pelvic limbs, with malodorous discharge from a supernumerary penis. Imaging (radiographs, abdominal ultrasound, and computed tomography with excretory urogram) showed a supernumerary pelvis with associated pelvic limbs, no osseous continuity with the primary spinal column, a colonic diverticulum extending to the supernumerary pelvis, an enlarged left kidney with a ureter connecting to a single bladder, right renal aplasia, a single descended testicle in the primary scrotum, an intra-abdominal cryptorchid testicle, and two unidentifiable soft tissue masses...
May 14, 2018: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/29747650/hospital-financing-of-ischaemic-stroke-determinants-of-funding-and-usefulness-of-drg-subcategories-based-on-severity-of-illness
#5
Sarah Dewilde, Lieven Annemans, Hilde Pincé, Vincent Thijs
BACKGROUND: Several Western and Arab countries, as well as over 30 States in the US are using the "All-Patient Refined Diagnosis-Related Groups" (APR-DRGs) with four severity-of-illness (SOI) subcategories as a model for hospital funding. The aim of this study is to verify whether this is an adequate model for funding stroke hospital admissions, and to explore which risk factors and complications may influence the amount of funding. METHODS: A bottom-up analysis of 2496 ischaemic stroke admissions in Belgium compares detailed in-hospital resource use (including length of stay, imaging, lab tests, visits and drugs) per SOI category and calculates total hospitalisation costs...
May 11, 2018: BMC Health Services Research
https://www.readbyqxmd.com/read/29705676/a-case-of-retroperitoneal-desmoid-type-fibromatosis-that-involved-the-unilateral-ureter-after-gynaecologic-surgery
#6
Hitomi Ono, Kensuke Hori, Lena Tashima, Tomohiko Tsuruta, Shin-Ichi Nakatsuka, Kimihiko Ito
INTRODUCTION: Desmoid-type fibromatosis represents a rare, benign, soft tissue tumour that is locally invasive with high recurrence potential. PRESENTATION OF CASE: We encountered a case of retroperitoneal desmoid-type fibromatosis in a 45-year-old woman who presented with chief complaints of stomach ache and vomiting. She underwent total abdominal hysterectomy and left salpingo-oophorectomy due to uterine myoma and a paroophoritic cyst at 42 years of age. Abdominal computed tomography showed a 5-cm left retroperitoneal tumour and severe hydronephrosis of the left kidney...
March 29, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29668724/the-somatostatin-receptor-2-antagonist-64cu-nodaga-jr11-outperforms-64cu-dota-tate-in-a-mouse-xenograft-model
#7
Svetlana N Rylova, Christian Stoykow, Luigi Del Pozzo, Keelara Abiraj, Maria Luisa Tamma, Yvonne Kiefer, Melpomeni Fani, Helmut R Maecke
Copper-64 is an attractive radionuclide for PET imaging and is frequently used in clinical applications. The aim of this study was to perform a side-by-side comparison of the in vitro and in vivo performance of 64Cu-NODAGA-JR11 (NODAGA = 1,4,7-triazacyclononane,1-glutaric acid,4,7-acetic acid, JR11 = p-Cl-Phe-cyclo(D-Cys-Aph(Hor)-D-Aph(cbm)-Lys-Thr-Cys)D-Tyr-NH2), a somatostatin receptor 2 antagonist, with the clinically used sst2 agonist 64Cu-DOTA-TATE ((TATE = D-Phe-cyclo(Cys-Tyr-D-Trp-Lys-Thr-Cys)Thr). In vitro studies demonstrated Kd values of 5...
2018: PloS One
https://www.readbyqxmd.com/read/29665393/comparative-experimental-theoretical-studies-on-the-egfr-dimerization-under-the-effect-of-egf-egf-analogues-binding-highlighting-the-importance-of-egf-egfr-interactions-at-site-iii-interface
#8
Masomeh Mehrabi, Hamid Mahdiuni, Hassan Rasouli, Kamran Mansouri, Mohsen Shahlaei, Reza Khodarahmi
Epidermal growth factor receptors (EGFRs) and their cytoplasmic tyrosine kinases play significant roles in cell proliferation and signaling. All the members of the EGFR/ErbB family are primary goals for cancer therapy, particularly for tumors of breast, cervix, ovaries, kidney, esophagus, prostate and non-small-cell lung carcinoma and head and neck tumors. However, the therapeutic ability of accessible anti-ErbB agents is limited. Therefore, recognizing EGF analogues or small organic molecules with high affinity for the extracellular domain of the EGFR is a critical target on cancer research...
April 14, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29651565/synthesis-and-preclinical-evaluation-of-novel-18-f-labeled-glu-urea-glu-based-psma-inhibitors-for-prostate-cancer-imaging-a-comparison-with-18-f-dcfpyl-and-18-f-psma-1007
#9
Stephanie Robu, Alexander Schmidt, Matthias Eiber, Margret Schottelius, Thomas Günther, Behrooz Hooshyar Yousefi, Markus Schwaiger, Hans-Jürgen Wester
BACKGROUND: Due to its high and consistent expression in prostate cancer (PCa), the prostate-specific membrane antigen (PSMA) represents an ideal target for molecular imaging and targeted therapy using highly specific radiolabeled PSMA ligands. To address the continuously growing clinical demand for 18 F-labeled PSMA-probes, we developed two novel Glu-urea-Glu-(EuE)-based inhibitors, EuE-k-18 F-FBOA (1) and EuE-k-β-a-18 F-FPyl (2), both with optimized linker structure and different 18 F-labeled aromatic moieties...
April 12, 2018: EJNMMI Research
https://www.readbyqxmd.com/read/29626242/incidence-of-kidney-stone-disease-in-icelandic-children-and-adolescents-from-1985-to-2013-results-of-a-nationwide-study
#10
Vidar O Edvardsson, Solborg E Ingvarsdottir, Runolfur Palsson, Olafur S Indridason
BACKGROUND: An increase in the incidence of kidney stone disease has been reported for all age groups worldwide. To examine this trend, we conducted a nationwide study of the epidemiology of kidney stones in Icelandic children and adolescents over a 30-year period. METHODS: Computerized databases of all major hospitals and medical imaging centers in Iceland were searched for International Classification of Diseases and radiologic and surgical procedure codes indicative of kidney stones in patients aged < 18 years, followed by a thorough medical record review...
April 6, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29596317/distribution-of-glutathione-stabilized-gold-nanoparticles-in-feline-fibrosarcomas-and-their-role-as-a-drug-delivery-system-for-doxorubicin-preclinical-studies-in-a-murine-model
#11
Katarzyna Zabielska-Koczywąs, Anna Wojtalewicz, Ewelina Użarowska, Agata Klejman, Agata Wojtkowska, Izabella Dolka, Marek Wojnicki, Katarzyna Sobczak, Michał Wójcik, Haifa Shen, Mauro Ferrari, Roman Lechowski
Feline injection site sarcomas (FISS) are malignant skin tumors with high recurrence rates despite the primary treatment of radical surgical resections. Adjunctive radiotherapy or chemotherapy with doxorubicin is mostly ineffective. Cellular and molecular causes of multidrug resistance, specific physio-chemical properties of solid tumors impairing drug transport, and the tumor microenvironment have been indicated for causing standard chemotherapy failure. Gold nanoparticles are promising imaging tools, nanotherapeutics, and drug delivery systems (DDS) for chemotherapeutics, improving drug transport within solid tumors...
March 29, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29571154/postmortem-interval-estimation-using-the-animal-model-of-postmortem-gas-volume-changes
#12
Chika Iwamoto, Kenoki Ohuchida, Miki Okumura, Yosuke Usumoto, Junji Kishimoto, Masaharu Murata, Noriaki Ikeda, Makoto Hashizume
It is important to estimate the postmortem interval in forensic autopsy. Many methods to estimate the postmortem interval have been reported, and are typically associated with internal examination. However, there are issues such as rejection of autopsy by the family and a lack of forensic doctor in internal examination. Therefore, it is necessary to develop new methods, such as autopsy imaging, that can substitute for internal examination. Here, we first evaluated whether gas volume in the body increased with postmortem interval...
December 20, 2017: Legal Medicine
https://www.readbyqxmd.com/read/29542819/nephroblastoma-in-bester-sturgeon-a-cultured-hybrid-of-huso-huso-%C3%A3-acipenser-ruthenus-diagnostic-imaging-clinical-and-histopathological-study
#13
H Rahmati-Holasoo, M Soltani, M Masoudifard, S Shokrpoor, A Taheri Mirghaed, M Ahmadpoor
Abdominal distention occurred at an incidence of 1% (15 from 1500 fish) in the population of 1-year-old bester (Huso huso × Acipenser ruthenus). Computed tomography (CT) images and radiographs showed a soft tissue mass compressed the posterior part of the swim bladder. Ultrasonography showed that the masses had different patterns. Internal examination revealed the abdominal cavities to be filled with large masses which appeared to encompass most of the visceral organs, including the swim bladder. The masses originated from the posterior kidney...
March 15, 2018: Journal of Fish Diseases
https://www.readbyqxmd.com/read/29534686/unexpected-presentation-of-allograft-dysfunction-triggered-by-page-kidney-phenomenon-immediately-after-kidney-transplantation-a-case-report
#14
Shunta Hori, Mitsuru Tomizawa, Fumisato Maesaka, Takuya Owari, Yosuke Morizawa, Yasushi Nakai, Makito Miyake, Tatsuo Yoneda, Nobumichi Tanaka, Katsunori Yoshida, Kiyohide Fujimoto
BACKGROUND: Page kidney phenomenon is caused by strong renal parenchymal compression and leads to renal hypoperfusion and microvascular ischemia, resulting in renal dysfunction and hypertension. Although the development of Page kidney phenomenon in allograft is rare, most of its cases are induced by allograft biopsy or trauma. We observed a case of Page kidney phenomenon that was induced by unusual causes immediately after kidney transplantation. CASE PRESENTATION: A 66-year-old man, whose wife donated a kidney, underwent ABO-compatible living kidney transplantation...
March 13, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29499713/efficient-targeted-tumor-imaging-and-secreted-endostatin-gene-delivery-by-anti-cd105-immunoliposomes
#15
Huiqin Zhuo, Baoshi Zheng, Jianming Liu, Yong Huang, Huiling Wang, Duo Zheng, Naiquan Mao, Jinyu Meng, Sufang Zhou, Liping Zhong, Yongxiang Zhao
BACKGROUND: Anti-CD105 mAb-conjugated immunoliposomes, loaded with secreted mouse endostatin gene, were developed for targeted tumor imaging and antiangiogenic gene therapy. METHODS: The liposomes were investigated for size, zeta-potential, lipid content, antibody binding ability, and pcDNA loading capacity. The ability of immunoliposomes to target tumor-derived endothelial cells and perform gene transfer in vitro was measured and their basic biocompatibility was evaluated...
March 2, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29477809/pictorial-review-renal-ultrasound
#16
REVIEW
Mittul Gulati, Justin Cheng, Jerry T Loo, Matt Skalski, Harshawn Malhi, Vinay Duddalwar
Ultrasound (US) is the first-line imaging modality for evaluating azotemic patients for urinary obstruction and renal size. US is also valuable for distinguishing congenital variants and simple cystic lesions from renal masses. Doppler US is effective in detection of renal calculi and evaluation of vascular pathology. Unfortunately, renal US is limited in distinguishing causes of medical renal disease. The kidneys have a complex internal architecture with a highly variable appearance on US. This article illustrates non-neoplastic renal conditions, including normal and embryological variants, parenchymal, cystic, and vascular diseases...
February 16, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29470042/fabrication-of-charge-conversion-nanoparticles-for-cancer-imaging-by-flash-nanoprecipitation
#17
Meng Li, Yisheng Xu, Jinli Sun, Mingwei Wang, Dahai Yang, Xuhong Guo, Haiyun Song, Song Cao, Yunfeng Yan
Traditional charge-conversion nanoparticles (NPs) need the breakage of acid-labile groups on the surface, which impedes the rapid response to the acidic microenvironment. Here, we developed novel rodlike charge-conversion NPs with amphiphilic dextran- b-poly(lactic- co-glycolic acid), poly(2-(dimethylamino) ethylmethylacrylate)- b-poly(ε-caprolactone), and an aggregation-induced emission-active probe through flash nanoprecipitation (FNP). These NPs exhibit reversible negative-to-positive charge transition at a slightly acidic pH relying on the rapid protonation/deprotonation of polymers...
April 4, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29423350/primary-psychiatric-disorder-masking-the-diagnosis-of-neuropsychiatric-lupus-in-a-patient-with-altered-mental-status-a-case-report
#18
Osman Perez, Kairavee Dave, Aimee Almanzar, Tajul Prodhan, Livasky Concepion
Neuropsychiatric systemic lupus erythematosus (NPSLE) has a wide variety of neurologic and psychiatric features. NPSLE symptoms and the psychotic features of primary psychiatric disorders often overlap with each other. These psychotic features often mask and delay the diagnosis of NPSLE. We present the case of a 59-year-old female previously diagnosed with bipolar disorder and generalized anxiety disorder presenting with altered mental status (AMS), subsequently diagnosed with neuropsychiatric lupus. Initially, medication overdose was suspected as an empty bottle of trazodone was found beside her...
October 23, 2017: Curēus
https://www.readbyqxmd.com/read/29412638/reduced-18-f-folate-conjugates-as-a-new-class-of-pet-tracers-for-folate-receptor-imaging
#19
Silvan D Boss, Cristina Müller, Klaudia Siwowska, Josephine I Büchel, Raffaella M Schmid, Viola Groehn, Roger Schibli, Simon M Ametamey
5-Methyltetrahydrofolate (5-MTHF), a reduced folate form, is the biologically active folate involved in many different metabolic processes. To date, there are no studies available in the literature on 18 F-labeled 6 S- and 6 R-5-MTHF radiotracers for imaging folate receptor (FR)-α-positive tissues. Therefore, the goal of this study was to synthesize four 18 F-labeled 5-MTHF derivatives conjugated at either the α- or γ-carboxylic functionality of glutamate and to assess their suitability for FR-targeting...
April 18, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29400475/albumin-binding-psma-ligands-optimization-of-the-tissue-distribution-profile
#20
Martina Benešová, Christoph A Umbricht, Roger Schibli, Cristina Müller
The prostate-specific membrane antigen (PSMA) has emerged as an attractive prostate cancer associated target for radiotheragnostic application using PSMA-specific radioligands. The aim of this study was to design new PSMA ligands modified with an albumin-binding moiety in order to optimize their tissue distribution profile. The compounds were prepared by conjugation of a urea-based PSMA-binding entity, a DOTA chelator, and 4-( p-iodophenyl)butyric acid using multistep solid phase synthesis. The three ligands (PSMA-ALB-02, PSMA-ALB-05, and PSMA-ALB-07) were designed with varying linker entities...
March 5, 2018: Molecular Pharmaceutics
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