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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
#1
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-18f-folate-conjugates-as-a-new-class-of-pet-tracers-for-folate-receptor-imaging
#2
Silvan D Boss, Cristina Müller, Klaudia Siwowska, Josephine Büchel, Rafaella Schmid, Viola Groehn, Roger Schibli, Simon Mensah 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 18F-labeled 6S- and 6R-5-MTHF radiotracers for imaging FR-α-positive tissues. Therefore, the goal of this study was to synthesize four 18F-labeled 5-MTHF derivatives conjugated at either the α- or γ-carboxylic functionality of glutamate and to assess their suitability for folate receptor (FR)-targeting. Organic syntheses of the precursors and the four reference compounds, namely 6S-α, 6S-γ, 6R-α and 6R-γ-click-fluoroethyl-5-MTHF, were carried out in low to moderate overall chemical yields...
February 7, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29400475/albumin-binding-psma-ligands-optimization-of-the-tissue-distribution-profile
#3
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...
February 5, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29390277/a-rare-case-report-of-bilateral-common-and-internal-iliac-arterial-fibromuscular-dysplasia-coexisted-dissection-aneurysm-and-stenosis
#4
Luyun Fan, Wenjun Ma, Huimin Zhang, Jun Cai
RATIONALE: Iliac arterial fibromuscular dysplasia (FMD) was rarely reported and its demographic, clinical, and imaging features have not been precisely described resulting in uncertain therapeutic methods. PATIENT CONCERNS: A 31-year-old man was referred because of 3-month-ago onset hypertension, low serum potassium, and a small-sized right kidney with normal renal artery under ultrasound examination. This patient was suspected of primary aldosteronism, whereas spirolactone was poorly effective...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29380423/improved-tolerance-to-off-resonance-in-spectral-spatial-epi-of-hyperpolarized-1-13-c-pyruvate-and-metabolites
#5
Justin Y C Lau, Benjamin J Geraghty, Albert P Chen, Charles H Cunningham
PURPOSE: For 13 C echo-planar imaging (EPI) with spectral-spatial excitation, main field inhomogeneity can result in reduced flip angle and spatial artifacts. A hybrid time-resolved pulse sequence, multi-echo spectral-spatial EPI, is proposed combining broader spectral-spatial passbands for greater off-resonance tolerance with a multi-echo acquisition to separate signals from potentially co-excited resonances. METHODS: The performance of the imaging sequence and the reconstruction pipeline were evaluated for 1 H imaging using a series of increasingly dilute 1,4-dioxane solutions and for 13 C imaging using an ethylene glycol phantom...
January 29, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29367095/re-co-3-18f-feda-a-novel-18f-pet-renal-tracer-radiosynthesis-and-preclinical-evaluation
#6
Malgorzata Lipowska, Nashwa Jarkas, Ronald J Voll, Jonathon A Nye, Jeffrey Klenc, Mark M Goodman, Andrew T Taylor
INTRODUCTION: Our previous work demonstrated that the 99mTc renal tracer, 99mTc(CO)3(FEDA) (99mTc-1), has a rapid clearance comparable in rats to that of 131I-OIH, the radioactive gold standard for the measurement of effective renal plasma flow. The uncharged fluoroethyl pendant group of 99mTc-1 provides a route to the synthesis of a structurally analogous rhenium-tricarbonyl 18F renal imaging agent, Re(CO)3([18F]FEDA) (18F-1). Our goal was to develop an efficient one-step method for the preparation of 18F-1 and to compare its pharmacokinetic properties with those of 131I-OIH in rats...
December 27, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29354336/severe-hypoglycemia-induced-right-hemiparesis-with-reversible-diffusion-restriction-in-the-left-internal-capsule-due-to-combination-therapy-using-disopyramide-and-clarithromycin
#7
Yoshito Sugita, Masaomi Koyanagi, Masashi Oda, Tamaki Kobayashi, Osamu Narumi, Masaaki Saiki
Severe hypoglycemia is known to cause acute focal neurological symptoms. In cases with a medical history of diabetes mellitus (DM), the diagnosis and treatment of hypoglycemia-induced neurological symptoms are simple. However, severe hypoglycemia can occur in patients who are not taking hypoglycemic agents such as insulin or long-acting sulfonylurea drugs. We describe a 95-year-old man with sudden onset of right hemiparesis who showed high signal intensity on diffusion-weighted imaging involving the left internal capsule with corresponding reduced apparent diffusion coefficient hypointensity...
January 2018: NMC Case Report Journal
https://www.readbyqxmd.com/read/29348825/a-novel-anti-cd146-antibody-specifically-targets-cancer-cells-by-internalizing-the-molecule
#8
Marie Nollet, Jimmy Stalin, Anaïs Moyon, Waël Traboulsi, Amel Essaadi, Stéphane Robert, Nausicaa Malissen, Richard Bachelier, Laurent Daniel, Alexandrine Foucault-Bertaud, Caroline Gaudy-Marqueste, Romaric Lacroix, Aurélie S Leroyer, Benjamin Guillet, Nathalie Bardin, Françoise Dignat-George, Marcel Blot-Chabaud
CD146 is an adhesion molecule present on many tumors (melanoma, kidney, pancreas, breast, ...). In addition, it has been shown to be expressed on vascular endothelial and smooth muscle cells. Generating an antibody able to specifically recognize CD146 in cancer cells (designated as tumor CD146), but not in normal cells, would thus be of major interest for targeting tumor CD146 without affecting the vascular system. We thus generated antibodies against the extracellular domain of the molecule produced in cancer cells and selected an antibody that specifically recognizes tumor CD146...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29325693/updates-in-the-eighth-edition-of-the-tumor-node-metastasis-staging-classification-for-urologic-cancers
#9
REVIEW
Gladell P Paner, Walter M Stadler, Donna E Hansel, Rodolfo Montironi, Daniel W Lin, Mahul B Amin
The Tumor-Node-Metastasis (TNM) classification on cancer staging, jointly developed by the American Joint Commission on Cancer (AJCC) and the Union for International Cancer Control (UICC), has been updated to its 8th edition with two contemporaneous versions published by the AJCC and UICC. While the goal of the AJCC and UICC is to have identical TNM staging systems, differences exist between these two publications including in the staging of urologic cancers. Among several new facets in the AJCC staging manual, a select few of greater import include an expanded section on imaging, presentation of levels of evidence for significant changes, and endorsement of risk assessment models that pass the AJCC quality criteria such as in prostate cancer...
January 8, 2018: European Urology
https://www.readbyqxmd.com/read/29324912/diuresis-renography-and-ultrasonography-in-children-with-antenatally-detected-hydronephrosis-can-support-diagnoses-and-suggest-related-surgery-treatment
#10
M Radulović, S Beatović, M Janković, Dragana Šobić-Šaranović, Vera Artiko, Boris Ajdinović
OBJECTIVE: Prenatal ultrasound (US) screening detects the hydronephrosis (HN)-dilatation of fetal renal collecting system in 1%-5% of all pregnancies. In most children, HN is detected by prenatal US screening between 18-20 gestational week. Pelvi- ureteric junction (PUJ) stenosis is the most common etiological factor of prenatal HN and requires postnatal follow-up. Diuresis renography plays important role in the follow-up by complementing morphological information obtained by US with the data about differential renal function (DRF) and drainage...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29315780/high-resolution-hyperpolarized-13-c-mrsi-using-spice-at-9-4t
#11
Hansol Lee, Jae Eun Song, Jaewook Shin, Eunhae Joe, Chan Gyu Joo, Young-Suk Choi, Ho-Taek Song, Dong-Hyun Kim
PURPOSE: To test the feasibility of using the SPICE (SPectroscopic Imaging by exploiting spatiospectral CorrElation) technique, which uses the partial separability of spectroscopic data, for high resolution hyperpolarized (HP) 13 C spectroscopic imaging. METHODS: Numerical simulations were performed to investigate the impact of transient HP signals on SPICE reconstruction. Furthermore, spectroscopic imaging exams from SPICE and conventional EPSI (echo-planar spectroscopic imaging) were simulated for comparison...
January 8, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29244269/current-trends-of-percutaneous-nephrolithotomy-in-a-developing-country
#12
Carlos A Batagello, Fabio Carvalho Vicentini, Giovanni Scala Marchini, Fabio Cesar Miranda Torricelli, Miguel Srougi, Willian Carlos Nahas, Eduardo Mazzucchi
INTRODUCTION: To present the current practice patterns on percutaneous nephrolithotomy (PCNL) in a developing country. MATERIALS AND METHODS: A survey was offered to Brazilian urologists during the II International Endourology Symposium held in Sao Paulo, in 2015. The first seven questions were related to demographic data while the 20 remaining were directed to urologists who performed PCNL. RESULTS: From 250 participants, 100 replied to the survey, 81% performed PCNL and 60...
December 18, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29196502/identifying-the-localization-and-exploring-a-functional-role-for-gprc5c-in-the-kidney
#13
Premraj Rajkumar, Boyoung Cha, Jianyi Yin, Lois J Arend, Teodor G Păunescu, Yoshio Hirabayashi, Mark Donowitz, Jennifer L Pluznick
The investigation of orphan GPCRs (GPRs) has the potential to uncover novel insights into whole animal physiology. In this study, our goal was to determine the renal localization of Gprc5c, a receptor that we previously reported to be highly expressed in murine whole kidney, and to examine physiologic parameters in Gprc5c knockout (KO) mice to gain insight into function. Gprc5c localized to the apical membrane of renal proximal tubules (PTs) in mice, rats, and humans. With the comparison of Gprc5c wild-type (WT) and KO mice, we found that Gprc5c KO mice have altered acid-base homeostasis...
December 1, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29193339/a-rapid-t1-mapping-method-for-assessment-of-murine-kidney-viability-using-dynamic-manganese-enhanced-magnetic-resonance-imaging
#14
Kai Jiang, Hui Tang, Prasanna K Mishra, Slobodan I Macura, Lilach O Lerman
PURPOSE: Dynamic manganese-enhanced MRI (MEMRI) allows assessment of tissue viability by tracing manganese uptake. We aimed to develop a rapid T1 mapping method for dynamic MEMRI to facilitate assessments of murine kidney viability. METHODS: A multi-slice saturation recovery fast spin echo (MSRFSE) was developed, validated, and subsequently applied in dynamic MEMRI at 16.4T on ischemic mouse kidneys after 4 weeks of unilateral renal artery stenosis (RAS). Baseline T1 values and post-contrast R1 (1/T1 ) changes were measured in cortex (CO), outer (OSOM), inner (ISOM) strips of outer medulla, and inner medulla (IM)...
November 28, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29191210/new-clues-to-the-nature-of-immunoglobulin-g4-related-disease-a-retrospective-japanese-multicenter-study-of-baseline-clinical-features-of-334-cases
#15
Kazunori Yamada, Motohisa Yamamoto, Takako Saeki, Ichiro Mizushima, Shoko Matsui, Yuhei Fujisawa, Satoshi Hara, Hiroki Takahashi, Hideki Nomura, Shigeyuki Kawa, Mitsuhiro Kawano
BACKGROUND: The aim was to further characterize immunoglobulin G4-related disease (IgG4-RD) by a large-scale multicenter study of its clinical and laboratory features conducted by multidisciplinary physicians of IgG4-RD in Japan. METHODS: Various specialists retrospectively evaluated IgG4-RD patients diagnosed between 1996 and 2015 in five hospitals by analyzing their baseline clinical features, laboratory, imaging, and pathological test findings, and treatment...
December 1, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29181500/perinatal-diagnosis-management-and-follow-up-of-cystic-renal-diseases-a-clinical-practice-recommendation-with-systematic-literature-reviews
#16
Charlotte Gimpel, Fred E Avni, Carsten Bergmann, Metin Cetiner, Sandra Habbig, Dieter Haffner, Jens König, Martin Konrad, Max C Liebau, Lars Pape, Georg Rellensmann, Andrea Titieni, Constantin von Kaisenberg, Stefanie Weber, Paul J D Winyard, Franz Schaefer
Importance: Prenatal and neonatal cystic kidney diseases are a group of rare disorders manifesting as single, multiple unilateral, or bilateral cysts or with increased echogenicity of the renal cortex without macroscopic cysts. They may be accompanied by grossly enlarged kidneys, renal oligohydramnios, pulmonary hypoplasia, extrarenal abnormalities, and neonatal kidney failure. The prognosis is extremely variable from trivial to very severe or even uniformly fatal, which poses significant challenges to prenatal counseling and management...
November 27, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/29158832/clinical-translation-and-first-in-human-use-of-44sc-sc-psma-617-for-pet-imaging-of-metastasized-castrate-resistant-prostate-cancer
#17
Elisabeth Eppard, Ana de la Fuente, Martina Benešová, Ambreen Khawar, Ralph A Bundschuh, Florian C Gärtner, Barbara Kreppel, Klaus Kopka, Markus Essler, Frank Rösch
BACKGROUND: Various trivalent radiometals are well suited for labeling of DOTA-conjugated variants of Glu-ureido-based prostate-specific membrane antigen (PSMA) inhibitors. The DOTA-conjugate PSMA-617 has proven high potential in PSMA radioligand therapy (PSMA-RLT) of prostate cancer as well as PET imaging when labeled with lutetium-177 and gallium-68 respectively. Considering the relatively short physical half-life of gallium-68 this positron emitter precludes prolonged acquisition periods, as required for pre-therapeutic dosimetry or intraoperative applications...
2017: Theranostics
https://www.readbyqxmd.com/read/29148253/quantification-of-vascular-damage-in-acute-kidney-injury-with-fluorine-magnetic-resonance-imaging-and-spectroscopy
#18
Jeremy K Moore, Junjie Chen, Hua Pan, Joseph P Gaut, Sanjay Jain, Samuel A Wickline
PURPOSE: To design a fluorine MRI/MR spectroscopy approach to quantify renal vascular damage after ischemia-reperfusion injury, and the therapeutic response to antithrombin nanoparticles (NPs) to protect kidney function. METHODS: A total of 53 rats underwent 45 min of bilateral renal artery occlusion and were treated at reperfusion with either plain perfluorocarbon NPs or NPs functionalized with a direct thrombin inhibitor (PPACK:phenyalanine-proline-arginine-chloromethylketone)...
November 16, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29146695/first-in-human-her2-targeted-imaging-using-89-zr-pertuzumab-pet-ct-dosimetry-and-clinical-application-in-patients-with-breast-cancer
#19
Gary A Ulaner, Serge K Lyashchenko, Christopher Riedl, Shutian Ruan, Pat B Zanzonico, Diana Lake, Komal Jhaveri, Brian Zeglis, Jason S Lewis, Joseph A O'Donoghue
In this first-in-human study, we evaluate the safety and dosimetry of (89)Zr-pertuzumab PET/CT for HER2-targeted imaging in patients with HER2-postive breast cancer. Materials and Methods: Patients with HER2-positive breast cancer and evidence of distant metastases were enrolled in an Institutional Review Board (IRB)-approved prospective clinical trial. Pertuzumab was conjugated with deferoxamine and radiolabeled with (89)Zr. Patients underwent (89)Zr-pertuzumab PET/CT with 74 MBq of (89)Zr-pertuzumab in a total antibody mass of 20-50 mg of pertuzumab...
November 16, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29134673/modified-dixon-based-renal-dynamic-contrast-enhanced-mri-facilitates-automated-registration-and-perfusion-analysis
#20
Anneloes de Boer, Tim Leiner, Eva E Vink, Peter J Blankestijn, Cornelis A T van den Berg
PURPOSE: Renal dynamic contrast-enhanced (DCE) MRI provides information on renal perfusion and filtration. However, clinical implementation is hampered by challenges in postprocessing as a result of misalignment of the kidneys due to respiration. We propose to perform automated image registration using the fat-only images derived from a modified Dixon reconstruction of a dual-echo acquisition because these provide consistent contrast over the dynamic series. METHODS: DCE data of 10 hypertensive patients was used...
November 13, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
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