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Contrast induced AKI

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https://www.readbyqxmd.com/read/28993631/establishment-of-a-repeated-social-defeat-stress-model-in-female-mice
#1
Aki Takahashi, Jia-Ru Chung, Song Zhang, Hongxing Zhang, Yael Grossman, Hossein Aleyasin, Meghan E Flanigan, Madeline L Pfau, Caroline Menard, Dani Dumitriu, Georgia E Hodes, Bruce S McEwen, Eric J Nestler, Ming-Hu Han, Scott J Russo
Numerous studies have employed repeated social defeat stress (RSDS) to study the neurobiological mechanisms of depression in rodents. An important limitation of RSDS studies to date is that they have been conducted exclusively in male mice due to the difficulty of initiating attack behavior directed toward female mice. Here, we establish a female mouse model of RSDS by inducing male aggression toward females through chemogenetic activation of the ventrolateral subdivision of the ventromedial hypothalamus (VMHvl)...
October 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28982378/efficacy-and-safety-of-a-balanced-salt-solution-versus-a-0-9-saline-infusion-for-the-prevention-of-contrast-induced-acute-kidney-injury-basic-trial-a-study-protocol-for-a-randomized-controlled-trial
#2
Hyung Ah Jo, Sehoon Park, Chan-Duck Kim, Hee-Yeon Jung, Jang-Hee Cho, Ran-Hui Cha, Ea Wha Kang, Tae Ik Chang, Sejoong Kim, Hyung-Jong Kim, Byung Ha Chung, Jung Pyo Lee, Jung Tak Park, Seung Hyeok Han, Tae-Hyun Yoo, Dong-Ryeol Ryu, Sung Jin Moon, Jae Hyun Chang, Dong Ki Kim, Kwon Wook Joo
BACKGROUND: Contrast-induced acute kidney injury (CI-AKI) is one of the most common causes of iatrogenic kidney injury and, therefore, its prevention is an important issue. However, whether the administration of 0.9% saline is the optimal prophylaxis method remains uncertain due to its supra-physiologic chloride component. In particular, recent studies suggest that chloride-restricted solutions showed superiority over 0.9% saline in several clinical settings. METHODS/DESIGN: The investigators designed a multicenter randomized controlled trial to compare the efficacy of a balanced salt solution and 0...
October 5, 2017: Trials
https://www.readbyqxmd.com/read/28979774/early-detection-of-acute-cisplatin-nephrotoxicity-interest-of-urinary-monitoring-of-proximal-tubular-biomarkers
#3
Valérian Bunel, Yasmina Tournay, Thomas Baudoux, Eric De Prez, Marie Marchand, Zita Mekinda, Raphaël Maréchal, Thierry Roumeguère, Marie-Hélène Antoine, Joëlle L Nortier
BACKGROUND: Renal toxicity induced by cisplatin (CisPt) is a clinical issue in patients with or without chronic kidney disease (CKD). Proximal tubular injury can result in acute kidney injury (AKI), which may compromise the course of chemotherapy and the prognosis. The purpose of this study was to investigate the time course of urinary markers of acute tubulotoxicity and to assess the usefulness of such monitoring in a routine clinical setting. METHODS: This work is an open prospective pilot study carried out among 23 patients receiving a platinum-based chemotherapy...
October 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28978536/the-role-of-tlr4-signaling-in-the-nephrotoxicity-of-heme-and-heme-proteins
#4
Karl A Nath, John D Belcher, Meryl C Nath, Joseph P Grande, Anthony J Croatt, Allan W Ackerman, Zvonimir S Katusic, Gregory M Vercellotti
Destabilized heme proteins release heme, and free heme is toxic. Heme is now recognized as an agonist for the TLR4 receptor. This study examined whether the TLR4 receptor mediates the nephrotoxicity of heme, specifically, the effects of heme on renal blood flow and inflammatory responses. We blocked TLR4 signaling by the specific antagonist TAK-242. Intravenous administration of heme to mice promptly reduced renal blood flow, an effect attenuated by TAK-242. In vitro, TAK-242 reduced heme-elicited activation of NF-κB and its downstream gene MCP-1; in contrast, TAK-242 failed to reduce heme-induced activation of the anti-inflammatory transcription factor, Nrf2, and its downstream gene HO-1...
October 4, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28976786/platelet-to-lymphocyte-ratio-predicts-contrast-induced-acute-kidney-injury-in-diabetic-patients-with-st-elevation-myocardial-infarction
#5
Bartosz Hudzik, Janusz Szkodziński, Ilona Korzonek-Szlacheta, Krzysztof Wilczek, Marek Gierlotka, Andrzej Lekston, Barbara Zubelewicz-Szkodzińska, Mariusz Gąsior
AIM: There has been a rise in contrast-induced acute kidney injury (CI-AKI). We examined the role of platelet-to-lymphocyte ratio (PLR) in predicting CI-AKI episodes in patients with myocardial infarction (MI) and diabetes. METHODS: A total of 719 patients with diabetes and MI were enrolled. Study population was divided into: group 1 (n = 615) without CI-AKI and group 2 (n = 104) with CI-AKI. RESULTS: Patients with CI-AKI had higher in-hospital mortality and a longer in-hospital stay...
October 4, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28941604/current-risk-of-contrast-induced-acute-kidney-injury-after-coronary-angiography-and-intervention-a-reappraisal-of-the-literature
#6
REVIEW
Lorenzo Azzalini, Luciano Candilio, Peter A McCullough, Antonio Colombo
Contrast-induced acute kidney injury (CI-AKI) is the acute impairment of renal function further to the intravascular administration of iodinated contrast media, and occurs most frequently after coronary angiography, percutaneous coronary intervention, and contrast-enhanced computed tomography. CI-AKI has been associated with the development of acute renal failure, worsening of chronic kidney disease, requirement for dialysis, prolonged hospital stay, and higher mortality rates and health care costs. Recently, a number of studies suggested that contrast media exposure might not be the causative agent in the occurrence of acute kidney injury, particularly in stable patients who receive small to moderate amounts of contrast media...
October 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28939956/radial-access-protects-from-contrast-media-induced-nephropathy-after-cardiac-catheterization-procedures
#7
Thorsten Feldkamp, Maya Luedemann, Martina E Spehlmann, Sandra Freitag-Wolf, Julia Gaensbacher, Kevin Schulte, Amer Bajrovic, Dieter Hinzmann, Hans-Joerg Hippe, Ulrich Kunzendorf, Norbert Frey, Mark Luedde
OBJECTIVES: To assess, whether cardiac catheterization via radial access prevents contrast-induced nephropathy. BACKGROUND: Contrast-induced nephropathy (CIN) is a major clinical problem which accounts for more than 10% of acute kidney injury cases in hospitalized patients. Protective measures such as the infusion of isotonic saline solution or acetylcysteine have not consistently been proven to prevent acute kidney injury (AKI). However, there is growing evidence that radial access for coronary angiography and coronary intervention is associated with a lower incidence of AKI compared to femoral access...
September 22, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28929640/rho-kinase-inhibitor-fasudil-attenuates-contrast-induced-acute-kidney-injury
#8
Yiming Wang, Hao Zhang, Zhijian Yang, Dengshun Miao, Dingguo Zhang
In this study, we tested the hypothesis that fasudil, a Rho kinase inhibitor, would protect against contrast-induced acute kidney injury (CI-AKI) in a mouse model and attempted to elucidate the mechanism involved. Mice subjected to unilateral ligation of the left anterior renal pedicle were divided into four groups: (1) control group, (2) CI-AKI induced by contrast media (CM group), (3) CI-AKI plus low-dose fasudil (LD group) and (4) CI-AKI plus high-dose fasudil (HD group). Animals from groups 2-4 received iodixanol (4...
September 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28918129/where-do-substrates-of-diacylglycerol-kinases-come-from-diacylglycerol-kinases-utilize-diacylglycerol-species-supplied-from-phosphatidylinositol-turnover-independent-pathways
#9
REVIEW
Fumio Sakane, Satoru Mizuno, Daisuke Takahashi, Hiromichi Sakai
Diacylglycerol kinase (DGK) phosphorylates diacylglycerol (DG) to produce phosphatidic acid (PA). Mammalian DGK comprises ten isozymes (α-κ) and regulates a wide variety of physiological and pathological events, such as cancer, type II diabetes, neuronal disorders and immune responses. DG and PA consist of various molecular species that have different acyl chains at the sn-1 and sn-2 positions, and consequently, mammalian cells contain at least 50 structurally distinct DG/PA species. Because DGK is one of the components of phosphatidylinositol (PI) turnover, the generally accepted dogma is that all DGK isozymes utilize 18:0/20:4-DG derived from PI turnover...
September 9, 2017: Advances in Biological Regulation
https://www.readbyqxmd.com/read/28904432/impact-of-steroids-on-the-inflammatory-response-after-ischemic-acute-kidney-injury-in-rats
#10
J Fontana, A Vogt, A Hohenstein, U Vettermann, E Doroshenko, E Lammer, B A Yard, S Hoeger
Inflammation plays a crucial role in acute kidney injury (AKI). The current study was designed to analyze the influence of prednisolone treatment on the inflammatory reaction during the first 96 h after AKI induction in a rat model. AKI was induced by unilateral clipping of the renal vessels. The treatment group received prednisolone 5 mg/kg s.c. daily. Infiltration rates of macrophages, leukocytes, and T-cells (24, 96 h) as well as plasma concentrations of the inflammatory markers intercellular adhesion molecule, interleukin-1 beta (IL-1β), IL-18, IL-6, and tumor necrosis factor-alpha (0, 6, 24, 96 h) were determined by fluorescence-activated cell sorting (FACS) analysis only...
September 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28874655/serum-neutrophil-gelatinase-associated-lipocalin-and-urinary-kidney-injury-molecule-1-as-potential-biomarkers-of-subclinical-nephrotoxicity-after-gadolinium-based-and-iodinated-based-contrast-media-exposure-in-pediatric-patients-with-normal-kidney-function
#11
Brankica Spasojević-Dimitrijeva, Jelena Kotur-Stevuljević, Milan Đukić, Dušan Paripović, Gordana Miloševski-Lomić, Vesna Spasojević-Kalimanovska, Polina Pavićević, Jadranka Mitrović, Mirjana Kostić
BACKGROUND New renal biomarkers such as neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury molecule-1 (KIM-1) show promise in early diagnosis of contrast media induced acute kidney injury (CI-AKI). The purpose of our study was to compare the subclinical nephrotoxicity (a condition without changes in standard renal biomarkers) of gadolinium-based contrast media (Gd-DTPA, gadopentetate dimeglumine) and iodinated-based contrast media (iopromide) in pediatric patients with normal kidney function...
September 6, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28870002/use-of-the-renalguard-system-to-prevent-contrast-induced-aki-a-meta-analysis
#12
Stephanie Mattathil, Saad Ghumman, Jonathan Weinerman, Anand Prasad
BACKGROUND: Contrast-induced kidney injury (CI-AKI) following cardiovascular interventions results in increased morbidity and mortality. RenalGuard (RG) is a novel, closed loop system which balances volume administration with forced diuresis to maintain a high urine output. We performed a meta-analysis of the existing data comparing use of RG to conventional volume expansion. METHODS: Ten studies were found eligible, of which four were randomized controlled trials...
September 4, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28863434/interaction-between-kisspeptin-and-adenylate-cyclase-activating-polypeptide-1-on-the-expression-of-pituitary-gonadotropin-subunits-a-study-using-mouse-pituitary-lbetat2-cells
#13
Tselmeg Mijiddorj, Haruhiko Kanasaki, Aki Oride, Tomomi Hara, Unurjargal Sukhbaatar, Tuvshintugs Tumurbaatar, Satoru Kyo
We examined direct effect of kisspeptin on pituitary gonadotrophs. Kisspeptin-10 (KP10) significantly increased the promoter activities of the gonadotropin subunits, common alpha-glycoprotein (Cga), luteinizing hormone beta (Lhb), and follicle-stimulatinghormone beta (Fshb) in LbetaT2 cells overexpressing kisspeptin receptor (Kiss1r). KP10 and gonadotropin-releasing hormone (GnRH) increased gonadotropin subunit levels to similar degrees and combined treatment with GnRH and KP10 did not potentiate their individual effects...
May 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28854431/involvement-of-s100a8-a9-tlr4-nlrp3-inflammasome-pathway-in-contrast-induced-acute-kidney-injury
#14
Xuexian Tan, Xiaohe Zheng, Zena Huang, Jiaqiong Lin, Chuli Xie, Yan Lin
BACKGROUND: Contrast-induced acute kidney injury (CIAKI) is a common cause of hospital-acquired acute kidney injury (AKI). S100A8/A9-TLR4-NLRP3 inflammasome pathway triggers inflammation, apoptosis and tissue injury in several AKI models. Nevertheless, the underlying mechanism of S100A8/A9-TLR4-NLRP3 inflammasome pathway in CIKAI is not clear. We aimed to investigate the possible role of S100A8/A9-TLR4-NLRP3 inflammasome in the pathophysiology of CIAKI. METHODS: We treated male rats and NRK-52E cells by iopromide to establish in vivo and in vitro models of CIAKI...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28842112/rcr-audit-of-compliance-with-uk-guidelines-for-the-prevention-and-detection-of-acute-kidney-injury-in-adult-patients-undergoing-iodinated-contrast-media-injections-for-ct
#15
L H Cope, K J Drinkwater, D C Howlett
AIM: To determine radiology departmental compliance with current UK guidance on contrast-induced acute kidney injury (CI-AKI) and to provide data on the incidence of clinically significant post-contrast AKI (PC-AKI) in computed tomography (CT) practice. MATERIALS AND METHODS: A questionnaire was sent to all UK acute National Health Service (NHS) providers (NHS boards in Scotland, local health boards in Wales, NHS trusts in England and health and social care trusts in Northern Ireland) to assess compliance of provider protocols with current UK guidelines for the prevention, recognition, and management of CI-AKI...
August 22, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28828020/nephroprotective-effects-of-l-carnitine-against-contrast-induced-nephropathy-in-patients-undergoing-percutaneous-coronary-intervention-a-randomized-open-labeled-clinical-trial
#16
Mohammad Mohammadi, Azita Hajhossein Talasaz, Mohammad Alidoosti, Hamid Reza Pour Hosseini, Kheirollah Gholami, Arash Jalali, Hamid Aryannejad
Background: L-carnitine may prevent the incidence of AKI by its antioxidant effects and improving circulation in ischemic conditions. The goal of this trial was to evaluate the impact of L-carnitine on contrast-induced nephropathy in patients undergoing elective PCI. Methods: Totally, the patients were randomly allocated to 2 groups. The treatment group received 1 g of L-carnitine orally 3 times a day, 24 hours before the procedure (3 g before PCI) and 2 g after PCI, whereas the control group did not receive L-carnitine...
April 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/28814591/spleno-renal-artery-transposition-in-a-solitary-functioning-kidney-for-treatment-resistant-hypertension-and-acute-kidney-injury
#17
Subash Somalanka, Fiona E Harris, Eric Chemla, Rebecca Jo Suckling, Pauline A Swift
Renal Artery Stenosis (RAS) is an important cause of treatment-resistant hypertension. Uncontrolled hypertension with RAS can cause progressive chronic kidney disease (CKD) leading to end-stage kidney disease. Therapeutic revascularisation can be helpful in appropriate circumstances where pharmaceutical intervention has failed and significant renovascular disease contributes to resistant hypertension. We present an interesting case of a Caucasian male with peripheral vasculopathy, abdominal aortic aneurysm (AAA), single functioning kidney and ostial RAS caused by stent struts from an endovascular AAA stent graft...
August 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28799717/persistent-serum-creatinine-increase-following-contrast-induced-acute-kidney-injury
#18
Carlo Briguori, Cristina Quintavalle, Francesca De Micco, Gabriella Visconti, Vito Di Palma, Giovanni Napolitano, Amelia Focaccio, Gerolama Condorelli
BACKGROUND: Contrast-induced acute kidney injury (CI-AKI) may led to both a transient and a persistent serum creatinine (sCr) increase. OBJECTIVES: To assess whether serum cystatin C (sCyC) and urine and serum neutrophil gelatinase-associated lipocalin (uNGAL, sNGAL) are useful in the early identification of persistent sCr increase following CI-AKI. METHODS: One hundred and eighteen patients who developed CI-AKI were included into the study...
August 11, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28746933/androgen-regulates-dimorphic-f-actin-assemblies-in-the-genital-organogenesis
#19
Liqing Liu, Kentaro Suzuki, Eunice Chun, Aki Murashima, Yuki Sato, Naomi Nakagata, Toshihiko Fujimori, Shigenobu Yonemura, Wanzhong He, Gen Yamada
Impaired androgen activity induces defective sexual differentiation of the male reproductive tract, including hypospadias, an abnormal formation of the penile urethra. Androgen signaling in the urethral mesenchyme cells (UMCs) plays essential roles in driving dimorphic urethral development. However, cellular events for sexual differentiation remain virtually unknown. In this study, histological analyses, fluorescent staining, and transmission electron microscopy (TEM) were performed to reveal the cellular dimorphisms of UMCs...
2017: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/28746193/comparing-common-doses-double-dose-vs-usual-dose-of-atorvastatin-for-preventing-contrast-induced-acute-kidney-injury-and-mortality-after-coronary-angiography
#20
COMPARATIVE STUDY
Wei-Jie Bei, Shi-Qun Chen, Hua-Long Li, Deng-Xuan Wu, Chongyang Duan, Ping-Yan Chen, Ji-Yan Chen, Ning Tan, Nian-Jin Xie, Yong Liu
High-dose atorvastatin pretreatment was proved reducing the risk of contrast-induced acute kidney injury (CI-AKI), especially in patients with high C-reactive protein (CRP) levels. We evaluated the effects of common atorvastatin doses (double vs usual) on the risk of CI-AKI and mortality.We recorded outcomes from 1319 patients who were administered periprocedural common doses of atorvastatin. The risks of CI-AKI and mortality between double-dose (40 mg/d) and usual-dose atorvastatin (20 mg/d) were compared using multivariable regression models in all patients or CRP tertile subgroups...
July 2017: Medicine (Baltimore)
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