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https://www.readbyqxmd.com/read/29473304/non-enhanced-magnetic-resonance-imaging-versus-renal-scintigraphy-in-acute-pyelonephritis
#1
Jun Aoyagi, Takahiro Kanai, Jun Odaka, Takane Ito, Takashi Saito, Hiroyuki Betsui, Rieko Furukawa, Waka Nakata, Takanori Yamagata
The utility of non-enhanced magnetic resonance imaging (MRI) has not been examined extensively for diagnosing acute pyelonephritis (APN) in children. The aims of this study were to compare non-enhanced MRI with technetium-99 m dimercaptosuccinic acid (99m Tc-DMSA) renal scintigraphy in detecting APN. Six boys and one girl with temperature ≥38°C and positive urine culture received both non-enhanced MRI with whole body diffusion-weighted imaging (DWI) and99m Tc-DMSA scintigraphy ≤7 days from the fever onset...
February 2018: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29472098/comparison-of-relative-renal-functions-calculated-with-99m-tc-dtpa-and-99m-tc-dmsa-for-kidney-patients-of-wide-age-ranges
#2
M A Momin, M N A Abdullah, M S Reza
Renal scintigraphy is an imaging method that uses small amount of radioactive materials called radiotracers, a Gamma camera and a computer to evaluate kidney functions and its anatomy. The present work reports the comparison of the relative renal functions (RRF) calculated with technetium-99m dimercaptosuccinic acid (99m Tc‑DMSA) and technetium-99m diethylenetriaminepentaacetic acid (99m Tc‑DTPA) for kidney patients of ages between 5 months and 71 years. A total of 50 patients including 29 male and 21 female has been selected and studied for renography...
January 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29462089/evaluation-of-the-management-of-severe-trauma-kidney-injury-and-long-term-renal-function-in-children
#3
Camille Overs, Youssef Teklali, Bernard Boillot, Delphine Poncet, Pierre-Yves Rabattu, Yohan Robert, Christian Piolat
BACKGROUND: To evaluate the management and long term renal function with DMSA scintigraphy in pediatric severe traumatic kidney injury (STKI) grade IV (STKI IV) and V (STKI V) at the trauma center of Grenoble Teaching Hospital. METHODS: This is a single-center observational retrospective study between 2004 and 2014. All children under the age of 15 managed at the Grenoble teaching Hospital for a STKI IV or V were included. The trauma grade was radiologically diagnosed on arrival at hospital, using the classification of the American Association for Surgery of Trauma...
February 17, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29446671/unenhanced-mri-as-an-alternative-to-99m-tc-labeled-dimercaptosuccinic-acid-scintigraphy-in-the-detection-of-pediatric-renal-scarring
#4
Colbey W Freeman, Talissa A Altes, Patrice K Rehm, Eduard E de Lange, Luke Lancaster, John P Mugler, James T Patrie, Sean Corbett, Carlos Leiva-Salinas, Lucia Flors
OBJECTIVE: The purpose of this study was to determine whether unenhanced MRI without sedation is a feasible substitute for dimercaptosuccinic acid (DMSA) scintigraphy in the detection of renal scars in pediatric patients. SUBJECTS AND METHODS: Patients scheduled for 99mTc-labeled DMSA scintigraphy for assessment of possible renal scars were recruited to undergo unenhanced MRI (free-breathing fat-suppressed T2-weighted single-shot turbo spin-echo and T1-weighted gradient-echo imaging, 13 minutes' total imaging time)...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29412212/porous-gold-nanocluster-decorated-manganese-monoxide-nanocomposites-for-microenvironment-activatable-mr-photoacoustic-ct-tumor-imaging
#5
Yu Liu, Xiaolin Lv, Heng Liu, Zijian Zhou, Jianpan Huang, Shenglan Lei, Shuhui Cai, Zhong Chen, Yanli Guo, Zhiwei Chen, Xi Zhou, Liming Nie
Stimuli-responsive nanoprobes that integrate multi-modal imaging capacities are highly desirable for precise tumor visualization. Herein, novel porous gold nanocluster-decorated manganese monoxide nanocomposites (MnO@Au NCs) were synthesized via a facile approach. The porous gold nanocluster layer was germinated on the surface of the as-prepared MnO@DMSA NPs through simple reduction of chloroauric acid in the presence of hydroxylamine hydrochloride. The MnO@Au NCs could be effectively internalized by tumor cells and slowly release Mn2+ ions within the acidic tumor microenvironment, improving the visualization of the tumor morphology...
February 7, 2018: Nanoscale
https://www.readbyqxmd.com/read/29384833/a-review-of-paediatric-administered-radiopharmaceutical-activities-to-determine-compliance-with-prescription-guidelines
#6
Giovanni Bibbo, Victoria Sigalas, Ian Kirkwood
OBJECTIVE: Attempts are underway to standardize paediatric administered activities, but equally important is knowing the actual activities administered to patients. In this work, paediatric administered activities are reviewed to determine compliance with the institution-prescribed guidelines. PATIENTS AND METHODS: Paediatric administered activities for common studies at our institution, August 2011 to January 2017, have been analysed to determine their deviations from the set guideline tolerance of 10% from prescribed activities...
March 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29359888/management-of-paediatric-high-grade-blunt-renal-trauma-a-10-year-single-centre-uk-experience
#7
Kee Yong Wong, Ram Jeeneea, Andrew Healey, Laurence Abernethy, Harriet Corbett, Fiona McAndrew, Paul Losty
INTRODUCTION: To report the management and outcome of paediatric patients sustaining high grade blunt renal trauma. PATIENTS AND METHODS: Medical records were examined for all Grade III to Grade V blunt renal trauma cases admitted to a paediatric trauma centre during the era(s) 2005 to 2015. Data collected and analysed included - demographics, imaging modalities, management, length of hospital stay, complications and follow-up outcome(s). RESULTS: 18 children (12 males, 6 females) with mean age 11 years (4 - 15) were included...
January 23, 2018: BJU International
https://www.readbyqxmd.com/read/29341603/pokmt1-from-the-polyketomycin-biosynthetic-machinery-of-streptomyces-diastatochromogenes-t%C3%A3-6028-belongs-to-the-emerging-family-of-c-methyltransferases-that-act-on-coa-activated-aromatic-substrates
#8
Xun Guo, Ivana Crnovcic, Chin-Yuan Chang, Jun Luo, Jeremy R Lohman, Monica Papinski, Andreas Bechthold, Geoffrey P Horsman, Ben Shen
Recent biochemical characterizations of the MdpB2 CoA ligase and MdpB1 C-methyltransferase (C-MT) from the maduropeptin (MDP, 2) biosynthetic machinery revealed unusual pathway logic involving C-methylation occurring on a CoA-activated aromatic substrate. Here we confirmed this pathway logic for the biosynthesis of polyketomycin (POK, 3). Biochemical characterization unambiguously established that PokM3 and PokMT1 catalyze the sequential conversion of 6-methylsalicylic acid (6-MSA, 4) to form 3,6-dimethylsalicylyl-CoA (3,6-DMSA-CoA, 6), which serves as the direct precursor for the 3,6-dimethylsalicylic acid (3,6-DMSA) moiety in the biosynthesis of 3...
January 17, 2018: Biochemistry
https://www.readbyqxmd.com/read/29324920/technetium-99m-dimercaptosuccinic-acid-renal-scintigraphy-can-guide-clinical-management-in-congenital-hydronephrosis
#9
Biljana Bazić-Đorović, Marija Radulović, Marija Šišić, Ljiljana Jauković, Sanja Dugonjić, Dragan Pucar, Zoran Janković, Slobodanka Beatović, Milica Janković, Zoran Krstić, Boris Ajdinović
OBJECTIVE: The purpose of this study was to evaluate damage of the kidney with technetium-99m-dimercaptosuccinic acid (99mTc-DMSA) scintigraphy in children with congenital hydronephrosis (CH) and the influence of other postnatal associated diagnoses on abnormal 99mTc-DMSA findings. SUBJECTS AND METHODS: 99mTc-DMSA scintigraphy in 54 children (17 girls and 37 boys), aged from 2 months to 5 years (median 11 months) with 66 congenital hydronephrotic renal units (RU) (42 unilateral hydronephrosis-29 boys and 13 girls; 12 bilateral hydronephrosis-8 boys and 4 girls) was performed...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29283363/dual-functional-nayf4-yb3-er3-nayf4-yb3-nd3-core-shell-nanoparticles-for-cell-temperature-sensing-and-imaging
#10
Zengliang Shi, Yue Duan, Xingjun Zhu, Qiwei Wang, DongDong Li, Ke Hu, Wei Feng, Fuyou Li, Chunxiang Xu
Lanthanide-doped up-conversion nanoparticles (UCNPs) provide a remote temperature sensing approach to monitoring biological microenvironment. In this research, the UCNPs of NaYF4: Yb3+, Er3+@NaYF4: Yb3+, Nd3+ with hexagonal(β) -phase have been synthesized and applied in cell temperature sensing as well as imaging after surface modification with Meso-2,3-Dimercaptosuccinic acid (DMSA). In the core-shell UCNPs, Yb3+ ions have been introduced as energy transfer media between sensitizers of Nd3+ and activators of Er3+ to improve Er3+emission and prevent from their quenching behavior due to multiple energy levels of Nd3+...
December 28, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29233628/xanthogranulomatous-pyelonephritis-in-a-paediatric-cohort-1963-2016-outcomes-from-a-large-single-center-series
#11
I Stoica, F O'Kelly, M B McDermott, F M J Quinn
BACKGROUND: Xanthogranulomatous pyelonephritis (XGP) is an uncommon chronic destructive granulomatous inflammation of the kidney. It was first described in 1916, and is thought to affect 6/1000 cases of pyelonephritis. Its manifestations are varied, and with a limited number of cases in the literature, the optimal diagnosis and management of XGP in the paediatric cohort is still unknown. MATERIAL AND METHODS: The medical records of children who were diagnosed and treated for XGP at the current unit during the period 1963-2016, inclusive, were retrospectively reviewed...
November 24, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29223716/alkaline-degradation-of-lyophilized-dmsa-prior-to-labeling-with-99mtc-identification-and-development-of-the-degradation-pathway-by-hplc-and-ms
#12
Erika V Almeida, Samuel L De Brito
INTRODUCTION: Complexes of technetium-99m (99mTc) with meso-dimercaptosuccinic acid (DMSA) have been widely used as diagnostic agents in nuclear medicine. The degradation products (DP) of DMSA formed under different forced conditions have been identified through HPLC-DAD and LC-MSn studies. In this study, the DMSA kit was subjected to forced degradation under hydrolysis conditions as prescribed by the International Conference on Harmonization (ICH) guideline Q1A. METHODS: Chromatographic separation was accomplished on a reverse phase Shim-Pack VP-ODS (150 mm × 4...
November 10, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29218427/the-role-of-nonautologous-and-autologous-adipose-derived-mesenchymal-stem-cell-in-acute-pyelonephritis
#13
Shabnam Sabetkish, Nastaran Sabetkish, Mahba Ataei Talebi, Shahnaz Halimi, Abdol-Mohammad Kajbafzadeh
We compared the therapeutic effects of autologous and nonautologous adipose-derived mesenchymal stem cell (ADMSC), in ameliorating the renal function in a rabbit model of acute pyelonephritis. The difference of perirenal and neck subcutaneous ADMSCs were also evaluated. Twenty female rabbits were apportioned to 5 groups. In group I (n = 4), the rabbits were injected direct inoculation of Escherichia coli (E. coli) into the right kidney. In group II (n = 4), autologous ADMSCs obtained from nape adipose tissue were injected into the subcapsular space 1 week after E...
December 7, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/29211403/the-role-of-fetal-maternal-microchimerism-as-a-natural-born-healer-in-integrity-improvement-of-maternal-damaged-kidney
#14
Abdol-Mohammad Kajbafzadeh, Shabnam Sabetkish, Nastaran Sabetkish
PURPOSE: To identify the fetal stem cell (FSC) response to maternal renal injury with emphasis on renal integrity improvement and Y chromosome detection in damaged maternal kidney. MATERIALS AND METHODS: Eight non-green fluorescent protein (GFP) transgenic Sprague- Dawley rats were mated with GFP-positive transgenic male rats. Renal damage was induced on the right kidney at gestational day 11. The same procedure was performed in eight non-pregnant rats as control group...
December 7, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29204797/prevention-of-renal-scarring-in-acute-pyelonephritis-by-probiotic-therapy-an-experimental-study
#15
Nastaran Sabetkish, Shabnam Sabetkish, Mohammad Javad Mohseni, Abdol-Mohammad Kajbafzadeh
We evaluated the protective effects of probiotic administration as a prophylaxis treatment and immediately after fever onset in increasing the immune response and decreasing the renal scarring in a rat model of acute pyelonephritis. Twenty-four rats were apportioned to three groups. In GI (n = 8), the rats were injected with direct inoculation of Escherichia coli into the right kidney. In GII (n = 8), the rats received a probiotic regimen 1 month before E. coli injection and the probiotic regimen was continued for the next 2 months...
December 4, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29187904/multimodality-imaging-of-angiogenesis-in-a-rabbit-atherosclerotic-model-by-gebp11-peptide-targeted-nanoparticles
#16
Tao Su, Ya-Bin Wang, Dong Han, Jing Wang, Shun Qi, Lei Gao, Ya-Hui Shao, Hong-Yu Qiao, Jiang-Wei Chen, Shu-Hui Liang, Yong-Zhan Nie, Jia-Yi Li, Feng Cao
Background and Aims: Angiogenesis is an important pathological process during progression of plaque formation, which can result in plaque hemorrhage and vulnerability. This study aims to explore non-invasive imaging of angiogenesis in atherosclerotic plaque through magnetic resonance imaging (MRI) and positron emission tomography (PET) by using GEBP11 peptide targeted magnetic iron oxide nanoparticles in a rabbit model of atherosclerosis. Methods: The dual-modality imaging probe was constructed by coupling 2, 3-dimercaptosuccinnic acid-coated paramagnetic nanoparticles (DMSA-MNPs) and the PET 68Ga chelator 1,4,7-triazacyclononane-N, N', N''-triacetic acid (NOTA) to GEBP11 peptide...
2017: Theranostics
https://www.readbyqxmd.com/read/29164462/ameliorative-effect-of-the-anticancer-agent-salinomycin-on-cadmium-induced-hepatotoxicity-and-renal-dysfunction-in-mice
#17
Kalina Kamenova, Yordanka Gluhcheva, Ivelin Vladov, Silviya Stoykova, Juliana Ivanova
This study presents experimental data on the effects of the tetraethylammonium salt of salinomycinic acid (Sal) on Cd-induced hepatotoxicity and renal dysfunction in Cd-treated mice compared to those of meso-2,3-dimercaptosuccinic acid (DMSA). Forty 60-day-old male ICR mice were randomized into five groups: control group (untreated mice), Cd group (Cd(II) acetate 20 mg/kg body weight provided orally once per day for 14 days), Cd + DMSA group (exposed to Cd(II) acetate as the Cd-exposed group followed by DMSA 20 mg/kg body weight provided orally once per day for 14 days), and Cd + Sal group (exposed to Cd(II) acetate as the Cd-exposed group followed by Sal 20 mg/kg body weight once per day for 14 days)...
November 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29144626/super-selective-robot-assisted-partial-nephrectomy-using-near-infrared-flurorescence-versus-early-unclamping-of-the-renal-artery-results-of-a-prospective-matched-pair-analysis
#18
Cecilia Lanchon, Valentin Arnoux, Gaëlle Fiard, Jean-Luc Descotes, Jean-Jacques Rambeaud, Jean-Benjamin Lefrancq, Delphine Poncet, Nicolas Terrier, Camille Overs, Quentin Franquet, Jean-Alexandre Long
INTRODUCTION: Super-selective clamping of tumor-specific segmental arteries was developed to eliminate ischemia of the remnant kidney while limiting hemorrhage during partial nephrectomy. The objective is to evaluate the benefice of super-selective clamping on renal functional outcome, compared to early-unclamping of the renal artery. MATERIALS AND METHODS: From March 2015 to July 2016, data from 30 patients undergoing super-selective robot-assisted PN (RAPN) for a solitary tumor by a single surgeon were prospectively collected...
November 19, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29142969/elucidation-of-renal-scars-in-children-with%C3%A2-vesicoureteral-reflux-using-contrast-enhanced-ultrasound-a-pilot%C3%A2-study
#19
David S Hains, Harris L Cohen, M Beth McCarville, Ellen E Ellison, Amy Huffman, Stacey Glass, Aslam H Qureshi, Keith R Pierce, Ashlyn L Cahill, Ashley Dixon, Noel Delos Santos
Introduction: Vesicoureteral reflux is a common disorder in children but can result in kidney scarring following acute pyelonephritis. The gold standard diagnostic to detect renal scars in children is (99m)Tc-dimercaptosuccinic acid (DMSA) scintigraphy. DMSA has a number of limitations including radiation exposure, need for sedation, and radiotracer supply shortages. Contrast-enhanced ultrasound (CEUS) is a technique whereby biocompatible microspheres of inert gas are administered i.v...
May 2017: KI Reports
https://www.readbyqxmd.com/read/29125524/expectant-use-of-cic-in-newborns-with-spinal-dysraphism-report-of-clinical-outcomes
#20
Matthew D Timberlake, Adam J Kern, Richard Adams, Candice Walker, Bruce J Schlomer, Micah A Jacobs
PURPOSE: Report urologic outcomes among newborns with spinal dysraphism managed within an expectant clean intermittent catheterization (CIC) program. METHODS: Newborns were followed clinically and with serial ultrasound (US). Urodynamics (UD) and dimercaptosuccinic acid (DMSA) renal scan were obtained at 3-6 months, 1 year, 3 years, then as needed. Patients with initial evaluation after 6 months were excluded. RESULTS: Median follow-up was 3...
October 20, 2017: Journal of Pediatric Rehabilitation Medicine
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