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3d model kidney

Helena Polena, Julie Creuzet, Maeva Dufies, Adama Sidibé, Abir Khalil-Mgharbel, Aude Salomon, Alban Deroux, Jean-Louis Quesada, Caroline Roelants, Odile Filhol, Claude Cochet, Ellen Blanc, Céline Ferlay-Segura, Delphine Borchiellini, Jean-Marc Ferrero, Bernard Escudier, Sylvie Négrier, Gilles Pages, Isabelle Vilgrain
BACKGROUND: Vascular endothelial (VE)-cadherin is an endothelial cell-specific protein responsible for endothelium integrity. Its adhesive properties are regulated by post-translational processing, such as tyrosine phosphorylation at site Y685 in its cytoplasmic domain, and cleavage of its extracellular domain (sVE). In hormone-refractory metastatic breast cancer, we recently demonstrated that sVE levels correlate to poor survival. In the present study, we determine whether kidney cancer therapies had an effect on VE-cadherin structural modifications and their clinical interest to monitor patient outcome...
March 22, 2018: British Journal of Cancer
Andrew R Christiansen, Rami M Shorti, Cory D Smith, William C Prows, Jay T Bishoff
PURPOSE: Despite the increasing use of advanced 3D imaging techniques and 3D printing, these techniques have not yet been comprehensively compared in a surgical setting. The purpose of this study is to explore the effectiveness of five different advanced imaging modalities during a complex renal surgical procedure. METHODS: A patient with a horseshoe kidney and multiple large, symptomatic stones that had failed Extracorporeal Shock Wave Lithotripsy (ESWL) and ureteroscopy treatment was used for this evaluation...
March 15, 2018: World Journal of Urology
Evan J Myers, Aniko Marshall, Mark D Parker
Mutations in the sodium bicarbonate cotransporter NBCe1 (SLC4A4) cause proximal renal tubular acidosis (pRTA). We recently described a novel pRTA mutation p.Gln913Arg (Q913R), inherited in compound heterozygous form with p.Arg510His (R510H). Q913R causes intracellular retention of NBCe1 and a 'gain of function' Cl - leak. To learn more about the importance of glutamine at position 913, we substituted a variety of alternative amino-acid residues (Cys, Glu, Lys, Leu, Ser) at position 913. Studying cRNA-injected Xenopus oocytes by voltage clamp, we find that most de novo mutants exhibit close-to-normal NBCe1 activity; only Q913K expresses a Cl - leak...
February 15, 2018: Scientific Reports
Heron Werner, Pedro Castro, Pedro Daltro, Jorge Lopes, Gerson Ribeiro, Edward Araujo Júnior
OBJECTIVE: This aimed to describe the prenatal diagnosis of three cases of Apert syndrome using two-dimensional (2D) and three-dimensional (3D) ultrasound, magnetic resonance imaging (MRI), and 3D virtual/physical models. METHODS: We retrospectively analyzed three cases of Apert syndrome at our service. The prenatal diagnostic methods used were 2D ultrasound, 3D ultrasound in conventional and HDlive rendering modes, T2-weighted MRI sequences, and 3D virtual/physical models from MRI or 3D ultrasound scan data...
February 13, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Chao Zhao, Peisi Xie, Ting Yong, Hailin Wang, Arthur Chung, Zongwei Cai
With the continuous exposure of environmental pollutants in organisms, determination of abundance variation and spatial distribution of lipids might expand our understanding of toxicological mechanisms occurring in kidney. Herein, an integrated method involving mass spectrometry (MS)-based lipidomics and matrix-assisted laser desorption/ionization-MS imaging (MALDI-MSI) was developed for the study of nephrotoxicity in mice exposed to 10 and 100 μg bisphenol S (BPS)/kg body weight/day. The BPS exposure remarkable perturbed abundances of 91 potential markers that mainly involved in five metabolic pathways...
February 12, 2018: Analytical Chemistry
Steven M Monda, Jonathan R Weese, Barrett G Anderson, Joel M Vetter, Ramakrishna Venkatesh, Kefu Du, Gerald L Andriole, Robert S Figenshau
OBJECTIVE: To provide a training tool to address the technical challenges of robot-assisted laparoscopic partial nephrectomy, we created silicone renal tumor models using 3-dimensional printed molds of a patient's kidney with a mass. In this study, we assessed the face, content, and construct validity of these models. MATERIALS AND METHODS: Surgeons of different training levels completed 4 simulations on silicone renal tumor models. Participants were surveyed on the usefulness and realism of the model as a training tool...
February 5, 2018: Urology
J Soares Machado, J Tran-Gia, S Schlögl, A K Buck, M Lassmann
BACKGROUND: Renal scans are among the most frequent exams performed on infants and toddlers. Due to the young age, this patient group can be classified as a high-risk group with a higher probability for developing stochastic radiation effects compared to adults. As there are only limited data on biokinetics and dosimetry in this patient group, the aim of this study was to reassess the dosimetry and the associated radiation risk for infants undergoing 99mTc-MAG3 renal scans based on a retrospective analysis of existing patient data...
February 2, 2018: EJNMMI Research
Yu G Alyaev, E S Sirota, E A Bezrukov, D N Fiev, M D Bukatov, A V Letunovskii, I Sh Byadretdinov
AIM: To evaluate the possibility of using 3D-printing in the management of patients with localized kidney cancer. MATERIALS AND METHODS: The study comprised five patients with localized kidney cancer who were treated at the Urology Clinic of the I.M. Sechenov First Moscow State Medical University from January 2016 to April 2017. Along with the standard examination, the patients underwent multispiral computed tomography (MSCT) to produce patient-specific 3D-printed models of the kidney tumors using 3D modeling and 3D printing...
December 2017: Urologii︠a︡
Raphael Uwechue, Petrut Gogalniceanu, Nicos Kessaris, Nick Byrne, Pankaj Chandak, Jonathon Olsburgh, Kamran Ahmed, Nizam Mamode, Ioannis Loukopoulos
Robotic-assisted kidney transplantation (RAKT) offers key benefits for patients that have been demonstrated in several studies. A barrier to the wider uptake of RAKT is surgical skill acquisition. This is exacerbated by the challenges of modern surgery with reduced surgical training time, patient safety concerns and financial pressures. Simulation is a well-established method of developing surgical skill in a safe and controlled environment away from the patient. We have developed a 3D printed simulation model for the key step of the kidney transplant operation which is the vascular anastomosis...
January 27, 2018: Journal of Robotic Surgery
Jeannine Missbach-Guentner, Diana Pinkert-Leetsch, Christian Dullin, Roser Ufartes, Daniel Hornung, Bjoern Tampe, Michael Zeisberg, Frauke Alves
The increasing number of patients with end stage chronic kidney disease not only calls for novel therapeutics but also for pioneering research using convincing preclinical disease models and innovative analytical techniques. The aim of this study was to introduce a virtual histology approach using micro computed tomography (µCT) for the entire murine kidney in order to close the gap between single slice planar histology and a 3D high resolution dataset. An ex vivo staining protocol based on phosphotungstic acid diffusion was adapted to enhance renal soft tissue x-ray attenuation...
January 23, 2018: Scientific Reports
Elnaz Gozalpour, Katherine S Fenner
BACKGROUND: Renal proximal tubule (PT) epithelial cells, expressing uptake and efflux transporters at basolateral and apical membranes, are the location of active renal drug secretion and reabsorption. In addition to singly transfected cells, an in vitro renal cell-based model is a requirement to study the active renal secretion of drugs, drug-drug interactions (DDIs), drug-induced kidney injury, nephrotoxicity holistically, and potentially renal replacement therapies. OBJECTIVES: So far, two-dimensional (2D) cell culture of primary and immortalized PT cells has been the only tool to study drugs active secretion, interactions, and nephrotoxicity, however, a number of in vivo characteristics of cells such as drug transporter expression and function, along with morphological features are lost during in vitro cell culture...
January 18, 2018: Current Drug Metabolism
Russell E Kincaid, Agung E Hertanto, Yu-Chi Hu, Abraham J Wu, Karyn A Goodman, Hai D Pham, Ellen D Yorke, Qinghui Zhang, Qing Chen, Gig S Mageras
BACKGROUND: Cone beam computed tomography (CBCT) for radiotherapy image guidance suffers from respiratory motion artifacts. This limits soft tissue visualization and localization accuracy, particularly in abdominal sites. We report on a prospective study of respiratory motion-corrected (RMC)-CBCT to evaluate its efficacy in localizing abdominal organs and improving soft tissue visibility at end expiration. MATERIAL AND METHODS: In an IRB approved study, 11 patients with gastroesophageal junction (GEJ) cancer and five with pancreatic cancer underwent a respiration-correlated CT (4DCT), a respiration-gated CBCT (G-CBCT) near end expiration and a one-minute free-breathing CBCT scan on a single treatment day...
January 19, 2018: Acta Oncologica
T Srinivasa Reddy, Steven H Privér, Nedaossadat Mirzadeh, Suresh K Bhargava
Newly synthesised mononuclear gold complexes containing the 2-BrC6F4PPh2 ligand have been fully characterised and their anticancer activity towards five human tumor [prostate (PC3), glioblastoma (U87MG), cervical (HeLa), fibrosarcoma (HT1080), ovarian (SKOV-3)] and normal human embryonic kidney (Hek-293T) cell lines investigated. Some of the synthesised gold complexes displayed higher cytotoxicity than cisplatin towards PC-3, HeLa and U87MG cells and inhibited the thioredoxin reductase (TrxR) enzyme, which is considered a potential target for new compounds in cancer treatment...
December 24, 2017: European Journal of Medicinal Chemistry
Gang Fan, Jun Li, Mingfeng Li, Mingji Ye, Xiaming Pei, Feiping Li, Shuai Zhu, Han Weiqin, Xiao Zhou, Yu Xie
Resection of completely endophytic renal tumors is a huge challenge for surgeons due to a lack of definite visual clues, especially in the laparoscopic approach. Three-dimensional (3D) kidney models, which can illustrate the clear relationship between renal masses and surrounding health tissues, were considered as reliable tools for understanding renal tumor characteristics in previous studies. We hypothesized that 3D kidney models can be used not only for planning but also for navigating laparoscopic partial nephrectomy (LPN) in patients with completely endophytic renal tumors...
January 12, 2018: Scientific Reports
Avi Raman, Teele Kuusk, Eoin R Hyde, Lorenz U Berger, Axel Bex, Faiz Mumtaz
OBJECTIVE: To review the literature and present a case of robotic-assisted laparoscopic partial nephrectomies in horseshoe kidney. METHODS: We describe a case of a right side oncocytoma in a horseshoe kidney managed robotically and review the literature of robotic-assisted laparoscopic surgical resection of kidney tumors in renal fusion anomalies. RESULTS: There are only 3 published cases of robotic-assisted laparoscopic partial nephrectomy (RAPN) for renal tumours in a horseshoe kidney in the literature...
December 27, 2017: Urology
Madhusmita Nayak, Avinash Pradhan, Shiba Shankar Giri, Mrinal Samanta, V Badireenath Konkimalla, Ashis Saha
Fatty acid desaturase (Fads) and elongase (Elovl) are two important enzymes involved in the biosynthesis of long-chain polyunsaturated fatty acids (LC-PUFAs) in fishes. Silver barb (Puntius gonionotus) is considered a promising medium carp species for freshwater aquaculture in Asia. Earlier, Δ6 fads cDNA was characterized to understand the molecular mechanism of LC-PUFA biosynthesis in this species. In the present study elovl5-like elongase full-length cDNA was cloned and characterized by RACE (rapid amplification of cDNA ends), and analyzed its basal expression in various organs/tissues by quantitative real time PCR (qRT-PCR) assay...
March 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
Shusuke Ueda, Miyako Shimasaki, Toru Ichiseki, Yoshimichi Ueda, Masanobu Tsuchiya, Ayumi Kaneuji, Norio Kawahara
BACKGROUND: Glucocorticoid-associated osteonecrosis is an intractable condition, making the establishment of preventative strategies of particular importance. Recently various studies using mesenchymal stem cells (MSC) have been conducted. Using a rabbit glucocorticoid-associated osteonecrosis model we administered green fluorescent protein (GFP)-labeled MSC intravenously to investigate their effect on osteonecrosis. METHODS: A rabbit osteonecrosis model in which methylprednisolone (MP) 20 mg/kg was injected into the gluteus of a Japanese white rabbit was used...
November 21, 2017: BMC Musculoskeletal Disorders
Francesco Porpiglia, Riccardo Bertolo, Enrico Checcucci, Daniele Amparore, Riccardo Autorino, Prokar Dasgupta, Peter Wiklund, Ashutosh Tewari, Evangelos Liatsikos, Cristian Fiori
PURPOSE: To test the face and content validity of 3D virtual-rendered printed models used before robot-assisted prostate cancer and nephron-sparing surgery. METHODS: Patients who underwent live surgery during an international urological meeting organized in January 2017 were enrolled. Those with organ-confined prostate cancer underwent robot-assisted radical prostatectomy. Patients with a single renal tumor underwent minimally invasive nephron-sparing surgery. High-resolution (HR) imaging was obtained for all patients...
November 10, 2017: World Journal of Urology
Satoru Muto, Haruna Kawano, Shuji Isotani, Hisamitsu Ide, Shigeo Horie
BACKGROUND: We assessed the effectiveness and convenience of a novel semi-automatic kidney volume (KV) measuring high-speed 3D-image analysis system SYNAPSE VINCENT(®) (Fuji Medical Systems, Tokyo, Japan) for autosomal dominant polycystic kidney disease (ADPKD) patients. METHODS: We developed a novel semi-automated KV measurement software for patients with ADPKD to be included in the imaging analysis software SYNAPSE VINCENT(®). The software extracts renal regions using image recognition software and measures KV (VINCENT KV)...
November 3, 2017: Clinical and Experimental Nephrology
Bramasta Nugraha, Manuel A Mohr, Aaron Ponti, Maximilian Y Emmert, Franziska Weibel, Simon P Hoerstrup, Solange Moll, Ulrich Certa, Marco Prunotto, Periklis Pantazis
In pharmacological research the development of promising lead compounds requires a detailed understanding of the dynamics of disease progression. However, for many diseases, such as kidney fibrosis, gaining such understanding requires complex real-time, multi-dimensional analysis of diseased and healthy tissue. To allow for such studies with increased throughput we established a dextran hydrogel-based in vitro 3D co-culture as a disease model for kidney fibrosis aimed at the discovery of compounds modulating the epithelial/mesenchymal crosstalk...
November 3, 2017: Scientific Reports
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