keyword
MENU ▼
Read by QxMD icon Read
search

organ perfusion

keyword
https://www.readbyqxmd.com/read/28641140/effect-of-c1-inh-on-ischemia-reperfusion-injury-in-a-porcine-limb-ex-vivo-perfusion-model
#1
Mai M Abdelhafez, Jane Shaw, Damian Sutter, Jonas Schnider, Yara Banz, Hansjörg Jenni, Esther Voegelin, Mihai A Constantinescu, Robert Rieben
Revascularization of an amputated limb within 4-6h is essential to avoid extensive ischemia/reperfusion (I/R) injury leading to vascular leakage, edema and tissue necrosis. I/R injury is a pathological inflammatory condition that occurs during reperfusion of an organ or tissue after prolonged ischemia. It is characterized by a complex crosstalk between endothelial cell activation and the activation of plasma cascades. Vasculoprotective pharmacological intervention to prevent I/R injury might be an option to prolong the time window between limb amputation and successful replantation...
June 19, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28640788/the-use-of-continuous-extended-criteria-graft-perfusion-will-lead-to-an-increase-in-transplantable-organs
#2
Dmitri Bezinover
No abstract text is available yet for this article.
July 2017: Transplantation
https://www.readbyqxmd.com/read/28640070/early-outcomes-of-the-new-uk-deceased-donor-kidney-fast-track-offering-scheme
#3
Chris J Callaghan, Lisa Mumford, Laura Pankhurst, Richard J Baker, J Andrew Bradley, Christopher J E Watson
BACKGROUND: The UK Kidney Fast-Track Scheme (KFTS) was introduced in 2012 to identify kidneys at high risk of discard and to rapidly facilitate transplantation. A retrospective analysis of kidneys transplanted through the KFTS was undertaken. METHODS: UK Transplant Registry data were collected on deceased donor kidneys implanted between 1 November 2012 and 30 April 2015 (DBD donors) and 1 March 2013 and 30 April 2015 (DCD donors). Posttransplant outcomes included 1-year eGFR and death-censored graft survival (DCGS)...
June 21, 2017: Transplantation
https://www.readbyqxmd.com/read/28639291/perfusion-of-isolated-rat-kidney-with-mesenchymal-stromal-cells-extracellular-vesicles-prevents-ischaemic-injury
#4
Marilena Gregorini, Valeria Corradetti, Eleonora Francesca Pattonieri, Chiara Rocca, Samantha Milanesi, Andrea Peloso, Silvana Canevari, Loris De Cecco, Matteo Dugo, Maria Antonietta Avanzini, Melissa Mantelli, Marcello Maestri, Pasquale Esposito, Stefania Bruno, Carmelo Libetta, Antonio Dal Canton, Teresa Rampino
Kidney donation after circulatory death (DCD) is a less than ideal option to meet organ shortages. Hypothermic machine perfusion (HMP) with Belzer solution (BS) improves the viability of DCD kidneys, although the graft clinical course remains critical. Mesenchymal stromal cells (MSC) promote tissue repair by releasing extracellular vesicles (EV). We evaluated whether delivering MSC-/MSC-derived EV during HMP protects rat DCD kidneys from ischaemic injury and investigated the underlying pathogenic mechanisms...
June 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28626073/increased-vascular-and-uteroplacental-matrix-metalloproteinase-1-and-7-levels-and-collagen-i-deposition-in-hypertension-in-pregnancy-role-of-tnf
#5
Wei Li, Ning Cui, Marc Q Mazzuca, Karina M Mata, Raouf A Khalil
Preeclampsia is manifested as maternal hypertension-in-pregnancy (HTN-Preg) and fetal growth restriction. Placental ischemia could be an initiating event; however, the molecular targets and intermediary mechanisms are unclear. We tested the hypothesis that placental ischemia could target vascular and uteroplacental matrix metalloproteinases (MMPs) through cytokines-mediated mechanism. MMP levels and distribution were measured in aorta, uterus and placenta of normal pregnant rats (Preg), and pregnant rats with reduced uterine perfusion pressure (RUPP)...
June 16, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28625243/-experimental-study-on-effect-of-airway-pressure-on-cardiopulmonary-resuscitation
#6
Dingyu Tan, Feng Sun, Yangyang Fu, Shihuan Shao, Yazhi Zhang, Yingying Hu, Jun Xu, Huadong Zhu, Xuezhong Yu
OBJECTIVE: To observe the effect of different airway pressure on ventilation, organ perfusion and return of spontaneous circulation (ROSC) of cardiac arrest (CA) pigs during cardiopulmonary resuscitation (CPR), and to explore the possible beneficial mechanism of positive airway pressure during CPR. METHODS: Twenty healthy landrace pigs of clean grade were divided into low airway pressure group (LP group, n = 10) and high airway pressure group (HP group, n = 10) with random number table...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624105/hypo-and-normothermic-perfusion-of-the-liver-which-way-to-go
#7
REVIEW
Jasmijn Selten, Andrea Schlegel, Jeroen de Jonge, Philipp Dutkowski
The demand of donor livers for transplantation exceeds the supply. In an attempt to maximize the number of potentially usable donor livers, several centers are exploring the role of machine perfusion. This review provides an update on machine perfusion strategies and basic concepts, based on current clinical issues, and discuss challenges, including currently used biomarkers for assessing the quality and viability of perfused organs. The potential benefits of machine perfusion on immunogenicity and the consequences on post-operative immunosuppression management are discussed...
April 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28622076/human-ips-derived-endothelial-cells-for-3d-microphysiological-systems
#8
Yosuke K Kurokawa, Rose T Yin, Michael R Shang, Venktesh S Shirure, Monica L Moya, Steven C George
Microphysiological systems, or "organ-on-a-chip", platforms, aim to recapitulate in vivo physiology using small-scale in vitro tissue models of human physiology. While significant efforts have been made to create vascularized tissues, most reports utilize primary endothelial cells which hinder reproducibility. Here we report the use of human induced pluripotent stem cell-derived endothelial cells (iPS-EC) in developing 3D microvascular networks. We established a CDH5-mCherry reporter iPS cell line, which expresses the vascular endothelial (VE)-cadherin fused to mCherry...
June 16, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28621636/is-brain-dead-donor-fluid-therapy-with-colloids-associated-with-better-kidney-grafts
#9
Niko Limnell, Alexey A Schramko
OBJECTIVES: Fluid therapy is required to maintain perfusion to donor organs. Recent reviews on the choices of fluids have emphasized the safety of using crystalloids, as opposed to fluid therapy with colloids, which has been reported to be either unequivocally or potentially harmful in a number of studies on various patient populations. We aimed to analyze whether the type of fluid administered to donors is connected with kidney transplant outcomes. MATERIALS AND METHODS: A total of 100 consecutive brain-dead multiorgan donors and their respective 181 kidney recipients were studied retrospectively...
June 16, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28620066/mitochondrial-complex-iv-subunit-4-isoform-2-is-essential-for-acute-pulmonary-oxygen-sensing
#10
Natascha Sommer, Maik Huttemann, Oleg Pak, Susan Scheibe, Fenja Knöpp, Christopher Sinkler, Monika Malczyk, Mareike Gierhardt, Azadeh Esfandiary, Simone Kraut, Felix T Jonas, Christine Veith, Siddhesh Aras, Akylbek Sydykov, Nasim Alebrahimdehkordi, Klaudia Giehl, Matthias Hecker, Ralf P Brandes, Werner Seeger, Friedrich Grimminger, Hossein A Ghofrani, Ralph T Schermuly, Lawrence I Grossman, Norbert Weissmann
Rationale: Acute pulmonary oxygen sensing is essential to avoid life-threatening hypoxemia via hypoxic pulmonary vasoconstriction (HPV) which matches perfusion to ventilation. Hypoxia-induced mitochondrial superoxide release has been suggested as critical step in the signaling pathway underlying HPV. However, the identity of the primary oxygen sensor and mechanism of superoxide release in acute hypoxia, as well as its relevance for chronic pulmonary oxygen sensing remains unresolved. Objective: To investigate the role of the pulmonary specific isoform 2 of subunit 4 of mitochondrial complex IV (Cox4i2) and the subsequent mediators superoxide and hydrogen peroxide for pulmonary oxygen sensing and signaling...
June 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28618765/the-influence-of-intraabdominal-pressure-on-the-mortality-rate-of-patients-with-acute-pancreatitis
#11
Petar Svorcan, Maja Stojanovic, Predrag Stevanovic, Aleksadar Karamarkovic, Radmilo Jankovic, Nebojsa Ladjevic
BACKGROUND/AIM: Intraabdominal hypertension (IAH) is a common clinical finding in patients with acute pancreatitis and is associated with poor prognosis. This study aimed to determine the impact of intraabdominal pressure (IAP) on the mortality rate in patients with acute pancreatitis in an intensive care unit. MATERIALS AND METHODS: A total of 50 patients with acute pancreatitis were included in this prospective cohort study. Based on the obtained values of IAP, the patients were divided into two groups: those with normal IAP (n = 14) and increased IAP (n = 36)...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28616347/intraoperative-care-for-aortic-surgery-using-circulatory-arrest
#12
REVIEW
Félix Ezequiel Fernández Suárez, David Fernández Del Valle, Adrián González Alvarez, Blanca Pérez-Lozano
The total circulatory arrest (CA) is necessary to achieve optimal surgical conditions in certain aortic pathologies, especially in those affecting the ascending aorta and aortic arch. During this procedure it is necessary to protect all the organs of ischemia, especially those of the central nervous system and for this purpose several strategies have been developed. The first and most important protective method is systemic hypothermia. The degree of hypothermia and the route of application have been evolving and currently tend to use moderate hypothermia (MH) (20...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28616291/intensive-blood-pressure-control-in-patients-with-acute-type-b-aortic-dissection-raid-study-protocol-for-randomized-controlled-trial
#13
REVIEW
Jian-Cang Zhou, Nan Zhang, Zhong-Heng Zhang, Ting-Ting Wang, Yue-Feng Zhu, Hui Kang, Wei-Min Zhang, Dong-Lin Li, Wei-Dong Li, Zhen-Jie Liu, Xi-Min Qian, Ming-You Zhang, Jue Wang, Mi Zhou, Zhi-Tao Yang, Yun-Xian Yu, Hang-Yang Li, Jian Zhang, Yong-Gang Wang, Jian-Ping Gao, Lin Ling, Kong-Han Pan
BACKGROUND: Blood pressure control is an essential therapy for patients with acute type B aortic dissection (ABAD) and should be maintained throughout the entire treatment. Thus, vast majority current guidelines recommend control the blood pressure to lower than 140/90 mmHg. Theoretically, a much lower target may further decrease the risk of propagation of dissection. However, some argued that too lower blood pressure would compromise the organ perfusion. Thus, there is no unanimous optimal target for blood pressure in patients with ABAD so far...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28606795/endothelium-independent-primitive-myxoid-vascularization-creates-invertebrate-like-channels-to-maintain-blood-supply-in-optic-gliomas
#14
Matija Snuderl, Guoan Zhang, Pamela Wu, Tara S Jennings, Seema Shroff, Valerio Ortenzi, Rajan Jain, Benjamin Cohen, Jason J Reidy, Mitchell S Dushay, Jeffrey H Wisoff, David H Harter, Matthias A Karajannis, David Fenyo, Thomas A Neubert, David Zagzag
Optic gliomas are brain tumors characterized by slow growth, progressive loss of vision, and limited therapeutic options. Optic gliomas contain various amounts of myxoid matrix, which can represent most of the tumor mass. We sought to investigate biological function and protein structure of the myxoid matrix in optic gliomas to identify novel therapeutic targets. We reviewed histological features and clinical imaging properties, analyzed vasculature by immunohistochemistry and electron microscopy, and performed liquid chromatography-mass spectrometry on optic gliomas, which varied in the amount of myxoid matrix...
June 9, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28603721/helping-prometheus-liver-protection-in-acute-hemorrhagic-shock
#15
REVIEW
Nils T Veith, Tina Histing, Michael D Menger, Tim Pohlemann, Thomas Tschernig
Acute hemorrhagic hypovolemic shock is caused by a significant high blood loss and leads to hemodynamic instability. The decrease in intravascular volume results in cellular hypoxia and finally in damage to organs such as the liver and the kidney. The liver plays a decisive role in the development or prevention of multiple organ failure after hemorrhagic shock. Despite the large number of experimental studies, the knowledge of pathophysiological mechanisms in the liver after hemorrhagic shock is incomplete...
May 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28600797/the-novel-nitric-oxide-donor-pdno-attenuates-ovine-ischemia-reperfusion-induced-renal-failure
#16
Kristofer F Nilsson, John Sandin, Lars E Gustafsson, Robert Frithiof
BACKGROUND: Renal ischemia-reperfusion injury is a common cause of acute kidney injury in intensive care and surgery. Recently, novel organic mononitrites of 1,2-propanediol (PDNO) were synthesized and shown to rapidly and controllably deploy nitric oxide in the circulation when administered intravenously. We hypothesized that intravenous infusion of PDNO during renal ischemia reperfusion would improve post-ischemic renal function and microcirculation. METHODS: Sixteen sheep were anesthetized, mechanically ventilated, and surgically instrumented...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28597291/multiple-drug-transporters-mediate-the-placental-transport-of-sulpiride
#17
Mengru Bai, Zhiyuan Ma, Dongli Sun, Caihong Zheng, Yayun Weng, Xi Yang, Ting Jiang, Huidi Jiang
Sulpiride is a typical antipsychotic drug for the treatment of schizophrenia, depression and other psychological disorders. It has been proven that a small amount of sulpiride could cross the human placenta using an ex vivo placental perfusion model. However, the placental transfer mechanism has not been elucidated. Considering the structure of sulpiride, we speculated that the transporters expressed in placenta might be involved in sulpiride uptake across the blood-placenta barrier. The aim of our study was to determine which transporters contributed to the placental transfer of sulpiride...
June 9, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28596539/zebrafish-as-an-animal-model-in-epilepsy-studies-with-multichannel-eeg-recordings
#18
Sung-Joon Cho, Donghak Byun, Tai-Seung Nam, Seok-Yong Choi, Byung-Geun Lee, Myeong-Kyu Kim, Sohee Kim
Despite recent interest in using zebrafish in human disease studies, sparked by their economics, fecundity, easy handling, and homologies to humans, the electrophysiological tools or methods for zebrafish are still inaccessible. Although zebrafish exhibit more significant larval-adult duality than any other animal, most electrophysiological studies using zebrafish are biased by using larvae these days. The results of larval studies not only differ from those conducted with adults but also are unable to delicately manage electroencephalographic montages due to their small size...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28591965/-predictive-value-of-early-changes-in-sublingual-microcirculation-on-organ-failure-of-patients-with-septic-shock
#19
Xue-Ying Zeng, Xue-Lian Liao, Yan Kang, Yao Chen, Wan-Hong Yin, Liang Zhao
OBJECTIVES: To determine the predictive value of early changes in sublingual microcirculation on organ failure of patients with septic shock. METHODS: Side-streamdark field imaging (SDF) videomicroscopy was performed to assess sublingual microcirculation of 34 adult patients at 0 h, 6 h and 24 h after they were diagnosed with septic shock.The patients were subject to sequential organ failure assessment (SOFA24 h-0 h). The patients with ΔSOFA24 h-0 h≥1 (deteriorated conditions) were compared with those with ΔSOFA24 h-0 h<1 in regard to sublingual microcirculation and the traditional hemodynamic indicators such as heart rate, mean arterial pressure, central venous pressure, urine output and lactate...
July 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28590938/combined-passive-acoustic-mapping-and-magnetic-resonance-thermometry-for-monitoring-phase-shift-nanoemulsion-enhanced-focused-ultrasound-therapy
#20
Calum Crake, F Can Meral, Mark Burgess, Iason Papademetriou, Nathan McDannold, Tyrone Porter
Focused ultrasound (FUS) has the potential to enable precise, image-guided noninvasive surgery for the treatment of cancer in which tumors are identified and destroyed in a single integrated procedure. However, success of the method in highly vascular organs has been limited due to heat losses to perfusion, requiring development of techniques to locally enhance energy absorption and heating. In addition, FUS procedures are conventionally monitored using MRI, which provides excellent anatomical images and can map temperature, but is not capable of capturing the full gamut of available data such as the acoustic emissions generated during this inherently acoustically-driven procedure...
June 7, 2017: Physics in Medicine and Biology
keyword
keyword
57508
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"