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https://www.readbyqxmd.com/read/27923180/insight-into-the-structure-and-stability-of-tc-and-re-dmsa-complexes-a-computational-study
#1
Daniel Hernández-Valdés, Alejandro Blanco-González, Ariel García-Fleitas, Zalua Rodríguez-Riera, Giuseppe Meola, Roger Alberto, Ulises Jáuregui-Haza
Meso-2,3-dimercaptosuccinic acid (DMSA) is used in nuclear medicine as ligand for preparation of diagnostic and therapy radiopharmaceuticals. DMSA has been the subject of numerous investigations during the past three decades and new and significant information of the chemistry and pharmacology of DMSA complexes have emerged. In comparison to other ligands, the structure of some DMSA complexes is unclear up today. The structures and applications of DMSA complexes are strictly dependent on the chemical conditions of their preparation, especially pH and components ratio...
November 27, 2016: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/27919185/modeling-the-effect-of-succimer-dmsa-dimercaptosuccinic-acid-chelation-therapy-in-patients-poisoned-by-lead
#2
Jan C H van Eijkeren, J Daniël N Olie, Sally M Bradberry, J Allister Vale, Irma de Vries, Harvey J Clewell, Jan Meulenbelt, Claudine C Hunault
CONTEXT: Kinetic models could assist clinicians potentially in managing cases of lead poisoning. Several models exist that can simulate lead kinetics but none of them can predict the effect of chelation in lead poisoning. Our aim was to devise a model to predict the effect of succimer (dimercaptosuccinic acid; DMSA) chelation therapy on blood lead concentrations. MATERIALS AND METHODS: We integrated a two-compartment kinetic succimer model into an existing PBPK lead model and produced a Chelation Lead Therapy (CLT) model...
December 5, 2016: Clinical Toxicology
https://www.readbyqxmd.com/read/27916642/magnetic-hyperthermia-and-ph-responsive-effective-drug-delivery-to-the-sub-cellular-level-of-human-breast-cancer-cells-by-modified-cofe2o4-nanoparticles
#3
Yunok Oh, Madhappan Santha Moorthy, Panchanathan Manivasagan, Subramaniyan Bharathiraja, Junghwan Oh
Magnetic iron oxide nanoparticles (MNPs) have been extensively utilized in a wide range of biomedical applications including magnetic hyperthermia agent. To improve the efficiency of the MNPs in therapeutic applications, in this study, we have synthesized CoFe2O4 nanoparticles and its surface was further functionalized with meso-2,3-dimercaptosuccinic acid (DMSA). The anticancer agent, Doxorubucin (DOX) was conjugated with CoFe2O4@DMSA nanoparticle to evaluate the combined effects of thermotherapy and chemotherapy...
December 1, 2016: Biochimie
https://www.readbyqxmd.com/read/27891414/paediatric-urinary-tract-infection-a-hospital-based-experience
#4
Khursheed Ahmed Wani, Mohd Ashraf, Javaid Ahmed Bhat, Nazir Ahmed Parry, Lubna Shaheen, Sartaj Ali Bhat
INTRODUCTION: Paediatric Urinary Tract Infection (UTI) is one of the commonly encountered entities by paediatricians. Studies have shown easy vulnerability of paediatric urinary tract in any acute febrile illness and a miss in diagnosis could have long term consequences like renal scaring with its adverse effects. Bearing these evidence based preludes in view we designed our study to know the prevalence of UTI in Kashmir province. AIM: Aim of the present study was to know the prevalence of UTI in febrile children and to know the sensitivity of different imaging modalities like Renal and Urinary Bladder Ultrasonography (RUS), Voiding Cystourethrography (VCUG) and Dimercaptosuccinic Acid (DMSA) scan in diagnosing UTI...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27889952/effects-of-different-doses-of-2-3-dimercaptosuccinic-acid-modified-fe2-o3-nanoparticles-on-intercalated-discs-in-engineered-cardiac-tissues
#5
Yongchao Mou, Shuanghong Lv, Fei Xiong, Yao Han, Yuwei Zhao, Junjie Li, Ning Gu, Jin Zhou
Although iron oxide nanoparticles (IRONs) were applied in clinical magnetic resonance imaging in vivo and magnetic tissue engineering in vitro widely, the underlying effects of IRONs on the development of cardiomyocytes especially the intercellular junctions, intercalated discs (IDs), remain an unknown issue. Given the critical role of three-dimensional (3D) engineered cardiac tissues (ECTs) in evaluation of nanoparticles toxicology, it remained necessary to understand the effects of IRONs on IDs assembly of cardiomyocytes in 3D environment...
November 27, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27879491/18f-fdg-pet-ct-in-renal-infections-evidence-of-acute-pyelonephritis-in-a-horseshoe-kidney
#6
Maxime Morelle, Alice Jaillard, Dimitri Bellevre, Guillaume Collet, Grégory Petyt
A 58-year-old paraplegic patient was prescribed F-FDG for persistent inflammatory syndrome after aortic surgery for dissection. The examination was performed on a Siemens mCT Flow PET/CT and shows a moderate prostate uptake, related to prostatitis on self-catheterization and a focal renal cortical hypermetabolism of the left medial midpole of a horseshoe kidney, which corresponds to renal parenchyma on the CT, and suggests pyelonephritis, confirmed by Tc-DMSA SPECT/CT.
November 22, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27872646/mercury-vapour-long-lasting-exposure-lymphocyte-muscarinic-receptors-as-neurochemical-markers-of-accidental-intoxication
#7
E Roda, A Giampreti, S Vecchio, P Apostoli, T Coccini
Introduction. Chronic poisoning may result in home setting after mercury (Hg) vapours inhalation from damaged devices. We report a chronic, nonoccupational Hg poisoning due to 10-year indoor exposure to mercury spillage. Case Report. A 72-year-old man with polyneuropathy of suspected toxic origin. At hospitalization, toxicological clinical evaluations confirmed the altered neurological picture documented across the last decade. Periodic blood and urine Hg levels (BHg, UHg) monitoring were performed from admission (t0), until 1 year later (t2), paralleled by blood neurochemical markers assessment, that is, lymphocytes muscarinic receptors (l-MRs)...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27833443/urine-interleukin-6-interleukin-8-and-transforming-growth-factor-%C3%AE-1-in-infants-with-urinary-tract-infection-and-asymptomatic-bacteriuria
#8
Grażyna Krzemień, Agnieszka Szmigielska, Agnieszka Turczyn, Małgorzata Pańczyk-Tomaszewska
INTRODUCTION: Urinary tract infection (UTI) occurs in 1.1% of girls and 1.4% of boys during the first year of life. Asymptomatic bacteriuria (ABU) is usually detected incidentally in 0.9% of girls and 2.5% of boys at this age. The aim of the study was to assess the usefulness of measurement of pro-inflammatory urine interleukin (IL)-6 and IL-8 concentrations and anti-inflammatory transforming growth factor β1 (TGF-β1) level in infants with febrile UTI, non-febrile UTI and ABU. MATERIAL AND METHODS: A total of 35 children, mean age 6...
2016: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/27825585/robot-assisted-laparoscopic-lower-pole-partial-nephrectomy-in-the-pediatric-patient
#9
Ashley C Wiestma, Patricia S Cho, Michael V Hollis, Joseph Badway, Richard N Yu
INTRODUCTION: In pediatric urology, partial nephrectomy is used primarily to remove a non-functioning renal moiety in a duplicated system. There are few data on infants undergoing this procedure. As such, we present a robot-assisted laparoscopic lower pole partial nephrectomy in an infant. METHODS: Our patient was an 11-month-old (10.7 kg) male with a history of prenatal hydronephrosis, who was diagnosed postnatally with a duplicated right collecting system and severe hydroureteronephrosis of the right lower collecting system...
October 22, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27819162/evaluation-of-abnormal-radiological-findings-in-children-aged-2-to-36-months-followed-by-recurrent-urinary-tract-infection-a-retrospective-study
#10
Cinar Ozen, Pelin Ertan, Feray Aras, Gul Gumuser, Mine Ozkol, Gonul Horasan Dinc
Our aim is to determine the rational usage of imaging techniques in order to prevent or minimize permanent renal damage in recurrent urinary tract infections (UTIs). This study was enrolled children aged between 2 and 36 months, following-up with the diagnosis of recurrent UTI. All children had ultrasonography (USG) and dimercaptosuccinic acid scanning, 39 of them had underwent on voiding cystourethrography. There were 133 children (87 girls, 46 boys) with the mean age of 32.82 ± 38.10 months included into the study...
November 6, 2016: Renal Failure
https://www.readbyqxmd.com/read/27801743/99mtc-dmsa-uptake-in-a-sister-mary-joseph-s-nodule-from-ovarian-cancer
#11
Sleiman Naddaf, Fahad Azzumeea, Mohammed Fahad Alzayed
A 50-year-old woman with ovarian cancer underwent Tc-DMSA scan to evaluate the functional status of the right hydronephrotic kidney. The images incidentally revealed a well-defined focus of mild radiotracer uptake at the midanterior abdominal wall, which correlated with a metastatic Sister Mary Joseph's nodule seen on CT performed a week earlier.
December 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27799742/n-acetylcysteine-and-meso-2-3-dimercaptosuccinic-acid-alleviate-oxidative-stress-and-hepatic-dysfunction-induced-by-sodium-arsenite-in-male-rats
#12
Ahmed M Abu El-Saad, Mohammed A Al-Kahtani, Ashraf M Abdel-Moneim
Environmental exposure to arsenic represents a serious challenge to humans and other animals. The aim of the present study was to test the protective effect of antioxidant N-acetylcysteine (NAC) either individually or in combination with a chelating agent, meso-2,3-dimercaptosuccinic acid (DMSA), against sodium arsenite oral toxicity in male rats. Five groups were used: control; arsenic group (orally administrated in a concentration of 2 mg/kg body weight [b.w.]); the other three groups were orally administrated sodium arsenite in a concentration of 2 mg/kg b...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27793866/dementia-epilepsy-and-polyneuropathy-in-a-mercury-exposed-patient-investigation-identification-of-an-obscure-source-and-treatment
#13
Tobias Zellner, Nicolas Zellner, Norbert Felgenhauer, Florian Eyer
We present a patient aged 54 years with early onset of dementia, epilepsy and peripheral polyneuropathy. A mercury intoxication was diagnosed in 2010, chelation therapy with 2,3-dimercaptopropane-1-sulfonate had failed. A source of exposure could not be identified. MRI showed unspecific hyperintense brain lesions in 2015. She was referred for diagnosis and treatment. Neuropsychological testing indicated severe memory loss and nerve conduction speed measurements showed chronic neurogenically changed potentials...
October 28, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27788352/mri-optical-dual-modality-imaging-of-vulnerable-atherosclerotic-plaque-with-an-osteopontin-targeted-probe-based-on-fe3o4-nanoparticles
#14
Hongyu Qiao, Yabin Wang, Ruohan Zhang, Quansheng Gao, Xiao Liang, Lei Gao, Zhenhua Jiang, Ruirui Qiao, Dong Han, Yan Zhang, Ya Qiu, Jie Tian, Mingyuan Gao, Feng Cao
Rupture of vulnerable atherosclerotic plaque is the major pathological cause of luminal thrombosis in acute coronary syndromes. Since foamy macrophages have been identified as a prominent component in vulnerable atherosclerotic lesions and osteopontin (OPN) is reported to be highly expressed in foamy macrophages, OPN could be a potential target for vulnerable atherosclerotic plaque imaging. The current study designed an OPN-specific MRI/optical dual-modality probe to detect vulnerable plaques. Fluorescence imaging revealed that 24 h after injection of the Cy5...
October 11, 2016: Biomaterials
https://www.readbyqxmd.com/read/27778495/laparoscopic-pyeloplasty-in-children-with-horseshoe-kidney
#15
Paulo Renato Marcelo Moscardi, Roberto Iglesias Lopes, Marcos Figueiredo Mello, Cristovao Machado Barbosa, Bruno Nicolino Cezarino, Lorena Marçalo Oliveira, Francisco Tibor Dénes, Miguel Srougi
INTRODUCTION: Horseshoe kidney occurs in 1 per 400-800 live births and are more frequently observed in males (M:F 2:1). Ureteropelvic junction obstruction (UPJO) is commonly associated with horseshoe kidneys. The variable blood supply, presence of the isthmus and high insertion of the ureter contribute to this problem. CASE REPORT: An asymptomatic 6 year-old boy presented with antenatal hydronephrosis. Ultrasonography and CT scan demonstrated left UPJO associated with a horseshoe kidney...
October 20, 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/27759832/preclinical-molecular-imaging-development-of-instrumentation-for-translational-research-with-small-laboratory-animals
#16
Jorge Mejia, Ana Claudia Camargo Miranda, Ana Claudia Ranucci Durante, Larissa Rolim de Oliveira, Marycel Rosa Felisa Figols de Barboza, Katerin Taboada Rosell, Daniele Pereira Jardim, Alexandre Holthausen Campos, Marilia Alves Dos Reis, Marcela Forli Catanoso, Orfa Yineth Galvis-Alonso, Francisco Romero Cabral
Objective: To present the result of upgrading a clinical gamma-camera to be used to obtain in vivo tomographic images of small animal organs, and its application to register cardiac, renal and neurological images. Methods: An updated version of the miniSPECT upgrading device was built, which is composed of mechanical, electronic and software subsystems. The device was attached to a Discovery VH (General Electric Healthcare) gamma-camera, which was retired from the clinical service and installed at the Centro de Imagem Pré-Clínica of the Hospital Israelita Albert Einstein...
July 2016: Einstein
https://www.readbyqxmd.com/read/27748543/delayed-treatment-of-the-first-febrile-urinary-tract-infection-in-early-childhood-increased-the-risk-of-renal-scarring
#17
Kyriaki A Karavanaki, Alexandra Soldatou, Athina Maria Koufadaki, Charalampos Tsentidis, Fotis A Haliotis, Constantinos J Stefanidis
AIM: This study evaluated the controversial relationship between the duration of fever before treatment initiation (FBT) for a febrile urinary tract infection (UTI), with renal scarring based on dimercaptosuccinic acid scintigraphy (DMSA) findings. METHODS: The inpatient records of 148 children under two years of age with a first episode of febrile UTI were analysed. Acute and repeat DMSA findings, clinical and laboratory parameters were evaluated. RESULTS: Acute DMSA showed that 76 of the 148 children with a febrile UTI had renal lesions: 20 were mild and 56 were moderate or severe...
October 17, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27710180/modelling-dimercaptosuccinic-acid-dmsa-plasma-kinetics-in-humans
#18
Jan C H van Eijkeren, J Daniël N Olie, Sally M Bradberry, J Allister Vale, Irma de Vries, Jan Meulenbelt, Claudine C Hunault
CONTEXT: No kinetic models presently exist which simulate the effect of chelation therapy on lead blood concentrations in lead poisoning. OBJECTIVE: Our aim was to develop a kinetic model that describes the kinetics of dimercaptosuccinic acid (DMSA; succimer), a commonly used chelating agent, that could be used in developing a lead chelating model. MATERIAL AND METHODS: This was a kinetic modelling study. We used a two-compartment model, with a non-systemic gastrointestinal compartment (gut lumen) and the whole body as one systemic compartment...
November 2016: Clinical Toxicology
https://www.readbyqxmd.com/read/27701619/-multilocus-sequence-typing-analysis-of-human-campylobacter-coli-in-granada-spain
#19
J A Carrillo-Ávila, A Sorlózano-Puerto, M Pérez-Ruiz, J Gutiérrez-Fernández
OBJECTIVE: Different subtypes of Campylobacter spp. have been associated with diarrhoea and a Multilocus Sequence Typing (MLST) method has been performed for subtyping. In the present work, MLST was used to analyse the genetic diversity of eight strains of Campylobacter coli. METHODS: Nineteen genetic markers were amplified for MLST analysis: AnsB, DmsA, ggt, Cj1585c, CJJ81176-1367/1371, Tlp7, cj1321-cj1326, fucP, cj0178, cj0755/cfrA, ceuE, pldA, cstII, cstIII. After comparing the obtained sequences with the Campylobacter MLST database, the allele numbers, sequence types (STs) and clonal complexes (CCs) were assigned...
December 2016: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/27698971/accuracy-of-99mtc-v-dimercaptosuccinic-acid-scintigraphy-and-fecal-calprotectin-compared-with-colonoscopy-in-localizing-active-lesions-in-inflammatory-bowel-disease
#20
Vahid Basirat, Zahra Azizi, Sanam Javid Anbardan, Mina Taghizadeh Asl, Yasaman Farbod, Azam Teimouri, Nasser Ebrahimi Daryani
INTRODUCTION Due to limitation of colonoscopy in assessing the entire bowel and patients' intolerance in inflammatory bowel disease (IBD), in the current study, we aimed to prospectively compare the accuracy of (99m)Tc(V)-dimercaptosuccinic acid (DMSA) and fecal calprotectin with ileocolonoscopy as new methods for localizing inflammations. METHODS Current prospective study conducted between 2012 and 2014 on 30 patients with IBD attending Gastroenterology Clinic of Tehran University of Medical Sciences. Fecal calprotectin and disease activity were measured for all participants and all of them underwent (99m)Tc (V)-DMSA scintigraphy and colonoscopy...
July 2016: Middle East Journal of Digestive Diseases
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