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https://www.readbyqxmd.com/read/29340639/biomechanical-rigidity-and-quantitative-proteomics-analysis-of-segmental-regions-of-the-trabecular-meshwork-at-physiologic-and-elevated-pressures
#1
Janice A Vranka, Julia A Staverosky, Ashok P Reddy, Phillip A Wilmarth, Larry L David, Ted S Acott, Paul Russell, Vijay Krishna Raghunathan
Purpose: The extracellular matrix (ECM) of the trabecular meshwork (TM) modulates resistance to aqueous humor outflow, thereby regulating IOP. Glaucoma, a leading cause of irreversible blindness worldwide, is associated with changes in the ECM of the TM. The elastic modulus of glaucomatous TM is larger than age-matched normal TM; however, the biomechanical properties of segmental low (LF) and high flow (HF) TM regions and their response to elevated pressure, are unknown. Methods: We perfused human anterior segments at two pressures using an ex vivo organ culture system...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29333468/extraosseous-accumulation-of-technetium-99m-methyl-diphosphonate-99mtc-mdp-in-a-child-with-all-a-case-report
#2
Farnaz Banezhad, Narjess Ayati, Farrokh Seilanian Toosi, Samine Boloursaz, S Rasoul Zakavi
Extraosseous accumulation of technetium-99m-methyl diphosphonate (99mTc-MDP) on bone scan is not common. This phenomenon is often attributed to abnormality of calcium metabolism and has been reported in a variety of conditions including metabolic diseases and malignancies. A five years old boy is presented here, who was admitted to the pediatric emergency suffering from fatigue, respiratory symptoms, weight loss, intermittent fevers, anorexia, nausea and vomiting, edema of legs and abdominal distension for one month...
2018: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/29326416/strategies-to-restore-adenosine-triphosphate-atp-level-after-more-than-20-hours-of-cold-ischemia-time-in-human-marginal-kidney-grafts
#3
Matteo Ravaioli, Maurizio Baldassare, Francesco Vasuri, Gianandrea Pasquinelli, Maristella Laggetta, Sabrina Valente, Vanessa De Pace, Flavia Neri, Antonio Siniscalchi, Chiara Zanfi, Valentina R Bertuzzo, Paolo Caraceni, Davide Trerè, Pasquale Longobardi, Antonio D Pinna
BACKGROUND The persisting organ shortage in the field of transplantation recommends the use of marginal kidneys which poorly tolerate ischemic damage. Adenosine triphosphate (ATP) depletion during cold ischemia time (CIT) is considered crucial for graft function. We tested different strategies of kidney perfusion before transplantation in the attempt to improve the technique. MATERIAL AND METHODS Twenty human discarded kidneys from donors after brain death and with at least 20 hours of CIT were randomized to the following experimental groups (treatment time three-hours at 4°C): a) static cold storage (CS); b) static cold hyperbaric oxygenation (Hyp); c) hypothermic perfusion (PE); d) hypothermic perfusion in hyperbaric oxygenation (PE-Hyp); and e) hypothermic oxygenated perfusion (PE-O2)...
January 12, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29325720/development-of-pancreatic-machine-perfusion-translational-steps-from-porcine-to-human-models
#4
Karim Hamaoui, Sally Gowers, Bynvant Sandhu, Natalie Vallant, Terry Cook, Martyn Boutelle, Daniel Casanova, Vassilios Papalois
BACKGROUND: Hypothermic machine perfusion (HMP) is increasingly being used for extended criteria kidney grafts. Pancreatic HMP is challenging because physiologically the pancreas is a low-flow organ susceptible to edema. We report the successful development of preclinical HMP models using porcine pancreases, as well as human pancreases unsuitable for clinical transplantation. METHODS: Ten porcine pancreases were used in the development of these perfusion models...
January 8, 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29324936/the-impact-of-lung-perfusion-scintigraphy-in-the-emergency-management-of-patients-with-suspected-pulmonary-embolism
#5
Cristina Ferrari, Alessandra Cimino, Giacomo Bianco, Francesca Iuele, Alessandra Di Palo, Margherita Fanelli, Artor Niccoli-Asabella, Giuseppe Rubini
OBJECTIVE: Pulmonary Embolism (PE) is an emergency condition that requires immediate treatment. As the symptoms and the risk factors are nonspecific, PE differential diagnosis is often required. Even if angio-CT is considered the gold standard for PE diagnosis, the frequent allergic condition and/or chronic renal failure of patients make, in most cases, not possible the use of contrast enhancement in emergency with even more increasing use of Lung Perfusion Scintigraphy (LPS), as a simple and fast examination with no preparation/contraindication...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29316185/ex-situ-86-hours-liver-perfusion-pushing-the-boundary-of-organ-preservation
#6
Qiang Liu, Ahmed Nassar, Laura Buccini, Patrick Grady, Basem Soliman, Ahmed Hassan, Daniele Pezzati, Giuseppe Iuppa, Teresa Diago Uso, Charles Miller, Cristiano Quintini
No abstract text is available yet for this article.
January 6, 2018: Liver Transplantation
https://www.readbyqxmd.com/read/29312756/history-of-lung-transplantation
#7
REVIEW
Federico Venuta, Dirk Van Raemdonck
Lung transplantation nowadays is a well-accepted and routine treatment for well selected patients with terminal respiratory disease. However, it took several decades of experimental studies and clinical attempts to reach this success. In this paper, we describe the early experimental activity from the mid-forties until the early sixties. The first clinical attempt in humans was reported by Hardy and Webb in 1963 followed by others with short survival only except for one case by Derom et al. who lived for 10 months...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29301417/isolated-kidney-perfusion-the-influence-of-pulsatile-flow
#8
Charlotte von Horn, Thomas Minor
Within the scope of transplantation research, ex vivo kidney perfusion has been proven an attractive model to study ischemia-reperfusion and preservation injury. Renal perfusion techniques also occupy scientists with the aim to optimize organ reconditioning and preparation prior to transplantation. This study investigated the influence of a pulsatile perfusion pattern that brings flow conditions closer to physiological situations, on renal perfusion characteristic and kidney function in the isolated perfused kidney...
January 4, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29297234/the-effect-of-modulated-electro-hyperthermia-on-temperature-and-blood-flow-in-human-cervical-carcinoma
#9
Lee Sun-Young, Jong-Hun Kim, Yeon-Hee Han, Dong-Hyu Cho
INTRODUCTION: Mild hyperthermia has been known to enhance the response of tumors to radiotherapy or chemotherapy by increasing tumor blood flow, thereby increasing tumor oxygenation or drug delivery. The purpose of this study was to assess the changes in temperature and blood flow in human cervical cancer in response to regional heating with modulated electro-hyperthermia (mEHT). METHODS: The pelvic area of 20 patients with cervical carcinoma was heated with mEHT...
January 3, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29290653/pharmacokinetics-and-pharmacodynamics-of-shengjiang-decoction-in-rats-with-acute-pancreatitis-for-protecting-against-multiple-organ-injury
#10
Lv Zhu, Jun-Yi Li, Yu-Mei Zhang, Hong-Xin Kang, Huan Chen, Hang Su, Juan Li, Wen-Fu Tang
AIM: To explore the pharmacokinetics and pharmacodynamics of Shengjiang decoction (SJD) in rats with acute pancreatitis (AP) for protecting against multiple organ injury. METHODS: An AP model was established by retrograde perfusion of 3.5% sodium taurocholate into the biliopancreatic duct, and a control group (CG) received 0.9% sodium chloride instead. Twelve male Sprague-Dawley rats were randomly divided into a CG treated with SJD (CG + SJD) and a model group treated with SJD (MG + SJD), both of which were orally administered with SJD (5 g/kg) 2 h after surgery...
December 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29286362/dissection-and-coronal-slice-preparation-of-developing-mouse-pituitary-gland
#11
Dongmei Cao, Xianhua Ma, Weiping J Zhang, Zhifang Xie
The pituitary gland or hypophysis is an important endocrine organ secreting hormones essential for homeostasis. It consists of two glands with separate embryonic origins and functions - the neurohypophysis and the adenohypophysis. The developing mouse pituitary gland is tiny and delicate with an elongated oval shape. A coronal section is preferred to display both the adenohypophysis and neurohypophysis in a single slice of the mouse pituitary. The goal of this protocol is to achieve proper pituitary coronal sections with well-preserved tissue architectures from developing mice...
November 16, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29285641/core-body-temperature-but-not-intraabdominal-pressure-predicts-postoperative-complications-following-closed-system-hyperthermic-intraperitoneal-chemotherapy-hipec-administration
#12
M Goldenshluger, D Zippel, A Ben-Yaacov, J Dux, T Yalon, A Zendel, S Rayman, E Mor, H Berkenstadt, H Fogel-Grinvald, M Ventorrero, A Nissan
BACKGROUND: Hyperthermic intraperitoneal chemotherapy (HIPEC) following cytoreductive surgery (CRS), performed using closed-abdomen technique (CAT), may affect intraabdominal pressure (IAP). High IAP may increase postoperative complications due to decreased venous return and hypoperfusion to vital organs. Elevated core body temperature (CBT) may cause multiorgan dysfunction. Low IAP or CBT could result in suboptimal HIPEC and potentially translate into early disease recurrence. The aim of the present study is to identify possible correlations between IAP or CBT and postoperative complications...
December 29, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29282572/arterioportal-shunting-splanchnic-capillary-perfusion-and-the-effects-of-colloids-during-capnoperitoneum-in-neonatal-and-adolescent-pigs
#13
J F Kuebler, N Schukfeh, G Vieten, W A Osthaus, D Huber, N Dennhard, R Suempelmann, B M Ure, M L Metzelder
BACKGROUND: Clinical and experimental data indicate that neonates are sensitive to the CO2 pneumoperitoneum. An impaired splanchnic perfusion during laparoscopy in adults has been reported. We recently confirmed that intravenous colloids improve macrocirculatory function in neonates. We aimed to determine the impact of CO2 pneumoperitoneum on the perfusion of splanchnic organs in the young including effects of colloid application. METHODS: Male piglets (n = 25) were divided into four groups: (1) neonatal controls, (2) neonates with crystalloid restitution, (3) neonates with colloidal restitution, and (4) adolescents with crystalloid restitution...
December 27, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29281153/microvascular-perfusion-of-the-placenta-developing-fetal-liver-and-lungs-assessed-with-intravoxel-incoherent-motion-imaging
#14
András Jakab, Ruth L Tuura, Raimund Kottke, Nicole Ochsenbein-Kölble, Giancarlo Natalucci, Thi Dao Nguyen, Christian Kellenberger, Ianina Scheer
BACKGROUND: In utero intravoxel incoherent motion magnetic resonance imaging (IVIM-MRI) provides a novel method for examining microvascular perfusion fraction and diffusion in the developing human fetus. PURPOSE: To characterize gestational changes in the microvascular perfusion fraction of the placenta, fetal liver, and lungs using IVIM-MRI. STUDY TYPE: Retrospective, cross-sectional study. SUBJECTS: Fifty-five datasets from 33 singleton pregnancies were acquired (17-36 gestational weeks)...
December 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29280162/managing-traps-and-pitfalls-during-initial-steps-of-an-ecmo-retrieval-program-using-a-miniaturized-portable-system-what-have-we-learned-from-the-first-two-years
#15
Anton Sabashnikov, Ilja Djordjevic, Antje-Christin Deppe, Elmar W Kuhn, Julia Merkle, Carolyn Weber, Dirk Sindhu, Kaveh Eghbalzadeh, Mohamed Zeriouh, Oliver J Liakopoulos, Parwis B Rahmanian, Ferdinand Kuhn-Régnier, Yeong-Hoon Choi, Navid Madershahian, Thorsten Wahlers
The aim of this study was to provide early and mid-term results of the newly established extracorporeal membrane oxygenation (ECMO) retrieval service in a tertiary cardiothoracic center using the miniaturized portable Cardiohelp System (Maquet, Rastatt, Germany). A particular attention was paid to organizational and logistic specifics as well as challenges and pitfalls associated with initial phase of the program. From January 2015 until January 2017 a heterogenic group of 28 consecutive patients underwent ECMO implantation in distant hospitals for acute cardiac, pulmonary or combined failure as a bridge-to-decision and were subsequently transported to our institution...
December 27, 2017: Artificial Organs
https://www.readbyqxmd.com/read/29278454/hypothermic-machine-perfusion-in-liver-transplantation
#16
R Cutler Quillin, James V Guarrera
A finite supply of donor organs has led many transplant centers to accept marginal liver allografts with increasing frequency. These allografts may be at higher risk of primary non-function, early allograft dysfunction and other recipient complications following liver transplantation. Machine perfusion preservation is an emerging technology that limits ischemia-reperfusion injury associated with preservation and may lead to improved outcomes following transplantation. Increased used of machine perfusion in liver preservation may permit an expansion of the donor pool...
December 26, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29278446/optimized-perfusion-based-cubic-protocol-for-the-efficient-whole-body-clearing-and-imaging-of-rat-organs
#17
Paweł Matryba, Lukasz Bozycki, Monika Pawłowska, Leszek Kaczmarek, Marzena Stefaniuk
Whole-organ and whole-body optical tissue clearing methods allowing imaging in three dimensions are an area of profound research interest. Originally developed to study nervous tissue, they have been successfully applied to all murine organs, yet clearing and imaging of rat peripheral organs is less advanced. Here, a modification of CUBIC clearing protocol is presented. It provides a rapid and simple approach to clear the entire adult rat organism and thus all organs within as little as four days. Upgraded perfusion-based rat CUBIC protocol preserves both anatomical structure of organs and signal from proteinaceous fluorophores, and furthermore is compatible with antibody staining...
December 26, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/29274251/quantitative-flow-imaging-in-human-umbilical-vessels-in-utero-using-nongated-2d-phase-contrast-mri
#18
Uday Krishnamurthy, Brijesh K Yadav, Pavan K Jella, Ewart Mark Haacke, Edgar Hernandez-Andrade, Swati Mody, Lami Yeo, Sonia S Hassan, Roberto Romero, Jaladhar Neelavalli
BACKGROUND: Volumetric assessment of afferent blood flow rate provides a measure of global organ perfusion. Phase-contrast magnetic resonance imaging (PCMRI) is a reliable tool for volumetric flow quantification, but given the challenges with motion and lack of physiologic gating signal, such studies, in vivo on the human placenta, are scant. PURPOSE: To evaluate and apply a nongated (ng) PCMRI technique for quantifying blood flow rates in utero in umbilical vessels...
December 23, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29273678/static-compression-down-regulates-n-cadherin-expression-and-facilitates-loss-of-cell-phenotype-of-nucleus-pulposus-cells-in-a-disc-perfusion-culture
#19
Haibo Zhou, Jianmin Shi, Chao Zhang, Pei Li
BACKGROUND: Mechanical compression often induces degenerative changes of disc nucleus pulposus (NP) tissue. It has been indicated that N-cadherin (N-CDH)-mediated signaling helps to preserve the NP cell phenotype. However, N-cadherin expression and the resulting NP-specific phenotype alteration under the static compression and dynamic compression remain unclear. OBJECTIVE: To study the effects of static compression and dynamic compression on N-CDH expression and NP-specific phenotype in an in vitro disc organ culture...
December 22, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29273369/carbon-monoxide-and-hydrogen-sulphide-reduce-reperfusion-injury-in-abdominal-compartment-syndrome
#20
Patrick B Murphy, Aurelia Bihari, Neil G Parry, Ian Ball, Ken Leslie, Kelly Vogt, Abdel-Rahman Lawendy
BACKGROUND: Carbon monoxide (CO)- and hydrogen sulphide-releasing molecules (CORM-3 and GYY4137, respectively) have been shown to be potent antioxidant and antiinflammatory agents at the tissue and systemic level. We hypothesized that both CORM-3 and GYY4137 would reduce the significant organ dysfunction associated with abdominal compartment syndrome (ACS). MATERIAL AND METHODS: Randomized trial was conducted where ACS was maintained for 2 hours in 27 rats using an abdominal plaster cast and intraperitoneal CO2 insufflation at 20 mmHg...
February 2018: Journal of Surgical Research
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