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renal perfusion

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https://www.readbyqxmd.com/read/28078848/clinical-effects-of-thermotherapy-in-combination-with-intracavitary-infusion-of-traditional-chinese-medicine-in-the-treatment-of-malignant-pleural-effusion
#1
Y Gu, L Jiang, J H Miao, T S Liang, Q C Kan, D K Yang
Malignant fluid, a commonly seen tumor associated complication, mainly includes peritoneal effusion, malignant pleural effusion and pericardial effusion. It can produce huge negative influence on the quality of life of patients and even lead to death. Treatment of malignant effusion is one of the effective measures for improving life expectancy of patients. To evaluate the effect of thermotherapy in combination with intracavitary infusion of Kangai injection in treating malignant pleural effusion, 195 patients who received treatment from April 2010 to October 2014 in the First Affiliated Hospital of Zhengzhou University were selected and divided into an observation group and two control groups (group A and B)...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28077541/the-role-of-bicarbonate-precursors-in-balanced-fluids-during-haemorrhagic-shock-with-and-without-compromised-liver-function
#2
B Ergin, A Kapucu, P Guerci, C Ince
BACKGROUND: Lactate, acetate, and gluconate are anions used in balanced resuscitation fluids, of which lactate and acetate are considered bicarbonate precursors. This study investigated the role of the liver in the ability of balanced and unbalanced solutions to correct acid-base alterations and renal haemodynamics and microvascular oxygenation in a rat model of resuscitated haemorrhagic shock. METHODS: Ringer's lactate, Ringer's acetate, PlasmaLyte, or normal saline were administered following haemorrhagic shock in the presence or absence of a 70% partial liver resection...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28072739/risk-factors-and-outcomes-associated-with-a-higher-use-of-inotropes-in-kidney-transplant-recipients
#3
Jae Moon Choi, Jun-Young Jo, Jae-Won Baik, Sooyoung Kim, Chan Sik Kim, Sung-Moon Jeong
Preservation of adequate perfusion pressures to the graft is a main focus of intraoperative management during kidney transplantation. We undertook this study to investigate the incidence of the higher use of inotropes in kidney transplant recipients and identify the patient outcomes and preoperative and intraoperative variables related to this.We retrospectively analyzed 1053 patients who underwent kidney transplantation at Asan Medical Center between January 2006 and February 2012, stratified by their inotropic score ([dopamine] + [dobutamine] + [epinephrine × 100] + [norepinephrine × 100]) <7 versus ≥7, wherein all doses are expressed as μg/kg/min...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28068947/urinary-neutrophil-gelatinase-associated-lipocalin-in-the-evaluation-of-patent-ductus-arteriosus-and-aki-in-very-preterm-neonates-a-cohort-study
#4
Anna Sellmer, Bodil H Bech, Jesper V Bjerre, Michael R Schmidt, Vibeke E Hjortdal, Gitte Esberg, Søren Rittig, Tine B Henriksen
BACKGROUND: A patent ductus arteriosus (PDA) is frequently found in very preterm neonates and is associated with increased risk of morbidity and mortality. A shunt across a PDA can result in an unfavorable distribution of the cardiac output and may in turn result in poor renal perfusion. Urinary Neutrophil Gelatinase-associated Lipocalin (U-NGAL) is a marker of renal ischemia and may add to the evaluation of PDA. Our primary aim was to investigate if U-NGAL is associated with PDA in very preterm neonates...
January 10, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28057840/delineating-the-role-of-various-factors-in-renal-disposition-of-digoxin-through-application-of-physiologically-based-kidney-model-to-renal-impairment-populations
#5
Daniel Scotcher, Christopher R Jones, Aleksandra Galetin, Amin Rostami-Hodjegan
Development of sub-models of organs within physiologically-based pharmacokinetic (PBPK) principles and beyond simple perfusion limitations may be challenging because of underdeveloped in vitro-in vivo extrapolation approaches or lack of suitable clinical data for model refinement. However, the advantage of such models in predicting clinical observations in divergent patient groups is now commonly acknowledged. Mechanistic understanding of altered renal secretion in renal impairment is one area that may benefit from such models, despite knowledge gaps in renal pathophysiology (Rowland Yeo et al...
January 5, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28052871/myoglobin-facilitates-angiotensin-ii-induced-constriction-of-renal-afferent-arterioles
#6
Zhi Zhao Liu, Susanne Mathia, Tamara Margit Pahlitzsch, Inggrid Christine Wennysia, Pontus B Persson, En Yin Lai, Anica Högner, Min Ze Xu, Rudolf Schubert, Christian Rosenberger, Andreas Patzak
Vasoconstriction plays an important role in the development of acute kidney injury in rhabdomyolysis. We hypothesized that myoglobin enhances the angiotensin II (Ang II) response in afferent arterioles by increasing superoxide and reducing nitric oxide (NO) bioavailability. Afferent arterioles of C57Bl6 mice were isolated perfused and vasoreactivity was analyzed using video microscopy. NO bioavailability, superoxide concentration in the vessels wall, and changes in cytosolic calcium were measured using fluorescence techniques...
January 4, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28052693/safety-and-efficacy-of-ex-vivo-donor-lung-adenoviral-il-10-gene-therapy-in-a-large-animal-lung-transplant-survival-model
#7
Tiago Noguchi Machuca, Marcelo Cypel, Riccardo Bonato, Jonathan C Yeung, Yi-Min Chun, Stephen Juvet, Guan Zehong, David M Hwang, Manyin Chen, Tomohito Saito, Constantine Harmantas, Beverly Davidson, Thomas K Waddell, Mingyao Liu, Shaf Keshavjee
OBJECTIVE: Ex vivo normothermic lung perfusion (EVLP) is a novel platform and method developed to facilitate functional assessment and implementation of advanced therapies for donor lungs prior to transplantation. We aimed to determine the safety and immunological and functional benefits of ex vivo adenoviral human IL-10 (AdhIL-10) gene delivery to prevent the development of primary graft dysfunction in a large animal survival model. METHODS: Pig donor lungs were retrieved, preserved for 6 hours at 4oC and then randomly assigned to 4 groups: 1) AdhIL-10 Gene Therapy: 12 hours EVLP + AdhIL-10 intra-bronchial delivery; 2) EVLP-control: 12 hours EVLP; 3) Vector-control: 12 hours EVLP + adenoviral vector intra-bronchial delivery; and 4) Prolonged hypothermic preservation: Additional 12 hours of cold ischemia...
January 4, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28050863/incremental-prognostic-value-of-spect-mpi-in-chronic-kidney-disease-a-reclassification-analysis
#8
Amjad M Ahmed, Waqas T Qureshi, Wesley T O'Neal, Fatima Khalid, Mouaz H Al-Mallah
BACKGROUND: Traditional cardiovascular (CV) risk factors have limited predictive value of CV mortality in patients with chronic kidney disease (CKD, creatinine clearance less than 60 mL/minute per 1.73 m(2)). The aim of this study was to evaluate incremental and independent prognostic value of single-photon emission computerized tomography-myocardial perfusion imaging (SPECT-MPI) across continuum of renal function. METHODS: We retrospectively studied 11,518 (mean age, 65 ± 12 years; 52% were men) patients referred for a clinical indication of SPECT-MPI between April 2004 and May 2009...
January 3, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28043422/extent-ii-thoracoabdominal-aortic-aneurysm-repair-how-i-do-it
#9
Joseph S Coselli, Kim I de la Cruz, Ourania Preventza, Scott A LeMaire, Scott A Weldon
The primary risks associated with thoracoabdominal aortic aneurysm (TAAA) repair-namely operative death, paraplegia, and renal failure necessitating dialysis-are commonly related to the distal ischemia that occurs during aortic clamping and the disruption of vital branching arteries. Our technique for open TAAA repair has evolved over the course of 3 decades, from the unheparinized, simple "clamp-and-sew" approach learned directly from E. Stanley Crawford himself to a contemporary, multimodal strategy that uses an array of surgical adjuncts...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28042948/bacmam-delivery-of-a-protective-gene-to-reduce-renal-ischemia-reperfusion-injury
#10
Elisabetta Hitchman, Richard Brian Hitchman, Linda A King
Ischaemia-reperfusion (I/R) injury remains the primary contributor to delayed graft function in kidney transplantation. The beneficial application of manganese superoxide dismutase (sod), delivered by a BacMam vector, against renal I/R injury has not been evaluated previously. Therefore, in this study we overexpressed sod-2 in proximal tubular epithelial (HK-2) cells and porcine kidney organs during simulated renal I/R injury. Incubation of HK-2 cells with antimycin A and 2-deoxyglucose resulted in a significant decrease in intracellular ATP levels; following reperfusion, ATP levels significantly increased overtime in cells overexpressing sod-2...
January 2, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28041318/dynamic-contrast-enhanced-magnetic-resonance-imaging-of-osseous-spine-metastasis-before-and-1-hour-after-high-dose-image-guided-radiation-therapy
#11
Eric Lis, Atin Saha, Kyung K Peck, Joan Zatcky, Michael J Zelefsky, Yoshiya Yamada, Andrei I Holodny, Mark H Bilsky, Sasan Karimi
OBJECTIVE High-dose image-guided radiation therapy (HD IGRT) has been instrumental in mitigating some limitations of conventional RT. The recent emergence of dynamic contrast-enhanced (DCE) MRI to investigate tumor physiology can be used to verify the response of human tumors to HD IGRT. The purpose of this study was to evaluate the near-immediate effects of HD IGRT on spine metastases through the use of DCE MRI perfusion studies. METHODS Six patients with spine metastases from prostate, thyroid, and renal cell carcinoma who underwent HD IGRT were studied using DCE MRI prior to and 1 hour after HD IGRT...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28040435/in-vitro-investigation-of-the-hemodynamic-responses-of-the-cerebral-coronary-and-renal-circulations-with-a-rotary-blood-pump-installed-in-the-descending-aorta
#12
M A Rezaienia, G Paul, E J Avital, S Mozafari, M Rothman, T Korakianitis
This study investigates the hemodynamic responses of the cardiovascular system when a rotary blood pump is operating in the descending aorta, with a focus on the cerebral, coronary and renal autoregulation, using our in-house cardiovascular emulator. Several improvements have been made from our previous studies. A novel coronary system was developed to replicate the native coronary perfusion. Three pinch valves actuated by stepper motors were used to simulate the regional autoregulation systems of the native cerebral, coronary and renal circulations...
December 28, 2016: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28009947/root-replacement-for-graft-infection-using-an-all-biologic-xenopericardial-conduit
#13
Sabina P W Guenther, Angela Reichelt, Sven Peterss, Maximilian Luehr, Erik Bagaev, Christian Hagl, Maximilian A Pichlmaier, Nawid Khaladj
BACKGROUND: The management of graft infection following ascending aortic replacement (AAR) and/or aortic valve replacement (AVR) with destruction of the root remains a challenge. Besides technical issues, the choice of graft material is controversial. The study aim was to investigate the initial results of aortic root replacement (ARR) as redo-surgery for infection using the xenopericardial all-biologic conduit (BioIntegral) as an alternative to a homograft or prosthetic material. METHODS: Between February 2013 and January 2015, a total of 18 consecutive patients (16 males, two females; mean age 61 ± 14 years) were reoperated on for infection at a mean of 55 ± 61 months (range: 3 to 219 months) following previous AVR (n = 6), supracoronary aortic replacement (SAR, n = 2), AVR + SAR (n = 1), root replacement (n = 7), and root reconstruction (n = 2)...
July 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27999886/correlation-between-ct-perfusion-parameters-and-fuhrman-grade-in-ptlb-renal-cell-carcinoma
#14
Chao Chen, Qinqin Kang, Qiang Wei, Bing Xu, Hui Ye, Tiegong Wang, Yayun Lu, Jianping Lu
PURPOSE: To evaluate the correlation of CT perfusion parameters with the Fuhrman grade in pT1b (4-7 cm) renal cell carcinoma (RCC). METHODS: CT perfusion imaging and Fuhrman pathological grading of pT1b RCC were performed in 48 patients (10 grade 1, 27 grade 2, 9 grade 3, and 2 grade 4). Equivalent blood volume (BV Equiv), permeability surface area product (PS), and blood flow (BF) of tumors were measured. Grade 1 and 2 were defined as low-grade group (n = 37), meanwhile high-grade group (n = 11) included grade 3 and 4...
December 20, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27994601/the-renal-arterial-resistance-index-predicts-worsening-renal-function-in-chronic-heart-failure-patients
#15
Massimo Iacoviello, Francesco Monitillo, Marta Leone, Gaetano Citarelli, Annalisa Doronzo, Valeria Antoncecchi, Agata Puzzovivo, Caterina Rizzo, Maria Silvia Lattarulo, Francesco Massari, Pasquale Caldarola, Marco Matteo Ciccone
BACKGROUND/AIM: The renal arterial resistance index (RRI) is a Doppler measure, which reflects abnormalities in the renal blood flow. The aim of this study was to verify the value of RRI as a predictor of worsening renal function (WRF) in a group of chronic heart failure (CHF) outpatients. METHODS: We enrolled 266 patients in stable clinical conditions and on conventional therapy. Peak systolic velocity and end diastolic velocity of a segmental renal artery were obtained by pulsed Doppler flow, and RRI was calculated...
November 2016: Cardiorenal Medicine
https://www.readbyqxmd.com/read/27994259/the-relationship-between-intra-operative-transfusions-and-nadir-hematocrit-on-post-operative-outcomes-after-cardiac-surgery
#16
Joshua B Goldberg, Kenneth G Shann, David Fitzgerald, John Fuller, Theron A Paugh, Timothy A Dickinson, Gaetano Paone, Richard L Prager, Donald S Likosky
Uncertainty exists regarding the optimal strategy for the management of anemia in the setting of cardiac surgery. We sought to improve our understanding of the role of intra-operative hematocrit (HCT) and transfusions on peri-operative outcomes following cardiac surgery. A total of 18,886 patients undergoing on-pump cardiac surgery were identified from a multi-institutional registry including surgical and perfusion data. Patients were divided into four groups based on their intra-operative nadir HCT (<21 or ≥21) and whether or not they received intra-operative red blood cell (+RBC or -RBC) transfusions...
December 2016: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/27990229/effects-of-allicin-on-hypertension-and-cardiac-function-in-chronic-kidney-disease
#17
Ehécatl M A García-Trejo, Abraham S Arellano-Buendía, Raúl Argüello-García, María L Loredo-Mendoza, Fernando E García-Arroyo, Mónica G Arellano-Mendoza, María C Castillo-Hernández, Gustavo Guevara-Balcázar, Edilia Tapia, Laura G Sánchez-Lozada, Horacio Osorio-Alonso
This work was performed to study the effect of allicin on hypertension and cardiac function in a rat model of CKD. The groups were control, CKD (5/6 nephrectomy), and CKD-allicin treated (CKDA) (40 mg/kg day/p.o.). Blood pressure was monitored (weekly/6 weeks). The cardiac function, vascular response to angiotensin II, oxidative stress, and heart morphometric parameters were determined. The CKD group showed hypertension and proteinuria. The coronary perfusion and left ventricular pressures were decreased in CKD group...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27989702/development-of-novel-self-assembled-es-plga-hybrid-nanoparticles-for-improving-oral-absorption-of-doxorubicin-hydrochloride-by-p-gp-inhibition-in-vitro-and-in-vivo-evaluation
#18
Jia Wang, Lin Li, Lei Wu, Bingjun Sun, Yuqian Du, Jin Sun, Yongjun Wang, Qiang Fu, Peng Zhang, Zhonggui He
To increase the encapsulation efficiency and oral absorption of doxorubicin hydrochloride (DOX), a novel drug delivery system of enoxaparin sodium-PLGA hybrid nanoparticles (EPNs) was successfully designed. By introducing the negative polymer of enoxaparin sodium (ES) to form an electrostatic complex with the cationic drug, DOX, the encapsulation efficiency (93.78%) of DOX was significantly improved. The X-ray diffraction (XRD) results revealed that the DOX-ES complex was in an amorphous form. An in vitro release (pH6...
December 15, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27989098/analysis-of-the-early-results-of-693-patients-undergoing-valvular-reoperation-between-1993-and-2011
#19
Mehmet Erdem Toker, Nihat Çine, Mehmet Taşar, Mehmet Dedemoğlu, Ekrem Yılmaz, Mehmet Balkanay, Cevat Yakut
BACKGROUND: The study aim was to identify factors affecting early mortality in valvular reoperations. METHODS: Between January 1993 and December 2011, a total of 693 patients who had undergone valvular reoperations due to problems with previously implanted mechanical and biological valves, new valve degeneration or valve failure after a reconstructive procedure was included in the study. Factors affecting early mortality were identified by the examination of preoperative and perioperative data, using multivariate analysis...
January 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27982428/the-etiology-of-basal-vacuolizations-in-renal-tubular-epithelial-cells-evaluated-in-an-isolated-perfused-kidney-model
#20
Chong Zhou, Andrea J Yool, Roger W Byard
To determine whether basal lipid vacuolization characteristic of ketoacidosis could be induced with short-term hypertriglyceridemia, adult Sprague Dawley rat kidneys were perfused in an isolated perfused kidney model with, and without, 11.3 mM (10 g/L) of triglycerides in Krebs-Henseleit buffer, for 1 and 2 h (n = 5/group). Additional treatments included perfusion with triglycerides with 20 mM of β-hydroxybutyrate and 2 mM of acetoacetate (n = 5) and perfusion with triglycerides with 70 mM of glucose (n = 1)...
December 16, 2016: Journal of Forensic Sciences
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