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renal IRI

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https://www.readbyqxmd.com/read/28634267/30-years-of-the-mineralocorticoid-receptor-the-role-of-the-mineralocorticoid-receptor-in-the-vasculature
#1
REVIEW
Jennifer J DuPont, Iris Z Jaffe
Since the mineralocorticoid receptor (MR) was cloned 30 years ago, it has become clear that MR is expressed in extra-renal tissues, including the cardiovascular system, where it is expressed in all cells of the vasculature. Understanding the role of MR in the vasculature has been of particular interest as clinical trials show that MR antagonism improves cardiovascular outcomes out of proportion to changes in blood pressure. The last 30 years of research have demonstrated that MR is a functional hormone-activated transcription factor in vascular smooth muscle cells and endothelial cells...
July 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28626178/hypoglycemic-coma-induced-by-the-use-of-succinic-acid-cibenzoline-in-frail-late-stage-elderly-subjects
#2
Yurie Hirata, Shinji Kamei, Fuminori Tatsumi, Masashi Shimoda, Akihito Tanabe, Junpei Sanada, Yoshiro Fushimi, Shintaro Irie, Tomoatsu Mune, Kohei Kaku, Hideaki Kaneto
Succinic acid cibenzoline (CZ) is an antiarrhythmic agent often used for the treatment of tachyarrhythmia. However, hypoglycemia should be avoided in the treatment of diabetes. We herein report two late-stage elderly subjects who experienced a severe and prolonged hypoglycemic coma after the usage of CZ. These cases suggest that, when CZ is administered to elderly subjects with renal dysfunction and/or frailty, we should be aware of the possibility that this medicine may induce hypoglycemia and should adjust the dose as appropriate and monitor the concentration of CZ to avoid severe hypoglycemia...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28618421/identification-of-tisp40-as-an-essential-regulator-of-renal-tubulointerstitial-fibrosis-via-tgf-%C3%AE-smads-pathway
#3
Cheng-Cheng Xiao, Jie Zhang, Peng-Cheng Luo, Cong Qin, Yang Du, Jin-Zhuo Ning, Hai-Zhou Zheng
BACKGROUND: Tisp40, a transcription factor of the CREB/CREM family, is involved in cell proliferation, differentiation and other biological functions, but its role in renal tubulointerstitial fibrosis is unknown. METHODS: In our study, we investigated the effects of Tisp40 on extracellular matrix (ECM) accumulation, epithelial-mesenchymal transition (EMT) and the underlying molecular mechanisms in transforming growth factor-β (TGF-β)-stimulated TCMK-1 cells by quantitative real-time polymerase chain reaction (qPCR), Western blot analysis and immunofluorescence in vitro, and further explored the role of Tisp40 on renal fibrosis induced by ischemia-reperfusion (I/R) by qPCR, Western blot analysis, hydroxyproline analysis, Masson trichrome staining and immunohistochemistry staining in vivo...
June 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28614691/a-trial-of-itraconazole-or-amphotericin-b-for-hiv-associated-talaromycosis
#4
RANDOMIZED CONTROLLED TRIAL
Thuy Le, Nguyen Van Kinh, Ngo T K Cuc, Nguyen L N Tung, Nguyen T Lam, Pham T T Thuy, Do D Cuong, Pham T H Phuc, Vu H Vinh, Doan T H Hanh, Vu Van Tam, Nguyen T Thanh, Tran P Thuy, Nguyen T Hang, Hoang B Long, Ho T Nhan, Heiman F L Wertheim, Laura Merson, Cecilia Shikuma, Jeremy N Day, Nguyen V V Chau, Jeremy Farrar, Guy Thwaites, Marcel Wolbers
BACKGROUND: Talaromyces marneffei infection is a major cause of human immunodeficiency virus (HIV)-related death in South and Southeast Asia. Guidelines recommend initial treatment with amphotericin B deoxycholate, but this drug has substantial side effects, a high cost, and limited availability. Itraconazole is available in oral form, is associated with fewer unacceptable side effects than amphotericin, and is widely used in place of amphotericin; however, clinical trials comparing these two treatments are lacking...
June 15, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28608403/mitochondria-targeted-antioxidant-mitoq-reduced-renal-damage-caused-by-ischemia-reperfusion-injury-in-rodent-kidneys-longitudinal-observations-of-t2-weighted-imaging-and-dynamic-contrast-enhanced-mri
#5
Xiaoge Liu, Michael P Murphy, Wei Xing, Huanhuan Wu, Rui Zhang, Haoran Sun
PURPOSE: To investigate the effect of mitochondria-targeted antioxidant MitoQ in reducing the severity of renal ischemia-reperfusion injury (IRI) in rats using T2 -weighted imaging and dynamic contrast-enhanced MRI (DCE-MRI). METHODS: Ischemia-reperfusion injury was induced by temporarily clamping the left renal artery. Rats were pretreated with MitoQ or saline. The MRI examination was performed before and after IRI (days 2, 5, 7, and 14). The T2 -weighted standardized signal intensity of the outer stripe of the outer medulla (OSOM) was measured...
June 12, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28603043/tak1-as-the-mediator-in-the-protective-effect-of-propofol-on-renal-interstitial-fibrosis-induced-by-ischemia-reperfusion-injury
#6
Huiping Wu, Jun Zhou, Weiming Ou, Yun Li, Meifang Liu, Chengxiang Yang
Ischemia-reperfusion injury (IRI), which is a major cause of acute and chronic renal dysfunction, induces both apoptosis and fibrotic processes. The mitogen-activated protein kinase kinase kinase transforming growth factor-β-activated kinase 1 (TAK1) was implicated in the processes of inflammation and fibrosis. The protective effect of propofol on renal functionality after acute kidney injury (AKI) in mice has been identified, whereas the mechanisms underlying fibrosis induced by kidney injury remain obscure...
June 8, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28587616/a-double-blind-randomised-controlled-investigation-into-the-efficacy-of-mirococept-apt070-for-preventing-ischaemia-reperfusion-injury-in-the-kidney-allograft-empirikal-study-protocol-for-a-randomised-controlled-trial
#7
Theodoros Kassimatis, Anass Qasem, Abdel Douiri, Elizabeth G Ryan, Irene Rebollo-Mesa, Laura L Nichols, Roseanna Greenlaw, Jonathon Olsburgh, Richard A Smith, Steven H Sacks, Martin Drage
BACKGROUND: Delayed graft function (DGF) is traditionally defined as the requirement for dialysis during the first week after transplantation. DGF is a common complication of renal transplantation, and it negatively affects short- and long-term graft outcomes. Ischaemia reperfusion injury (IRI) is a prime contributor to the development of DGF. It is well established that complement system activation plays a pivotal role in the pathogenesis of IRI. Mirococept is a highly effective complement inhibitor that can be administered ex vivo to the donor kidney just before transplantation...
June 6, 2017: Trials
https://www.readbyqxmd.com/read/28586635/tin-protoporphyrin-activates-the-oxidant-dependent-nrf2-cytoprotective-pathway-and-mitigates-acute-kidney-injury
#8
Ali C M Johnson, Jeff J Delrow, Richard A Zager
Tin protoporphyrin (SnPP), a heme oxygenase (HO) inhibitor, can paradoxically protect against diverse forms of acute kidney injury (AKI). This study sought potential underlying mechanisms. CD-1 mice received intravenous SnPP, followed 4-18 hours later by a variety of renal biochemical, histologic, and genomic assessments. Renal resistance to ischemic-reperfusion injury (IRI) was also sought. SnPP was rapidly taken up by kidney and was confined to proximal tubules. Transient suppression of renal heme synthesis (decreased δ aminolevulinic acid synthase expression), a 2...
May 19, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28583551/renoprotective-effects-of-carbon-monoxide-releasing-molecule-3-in-ischemia-reperfusion-injury-and-cisplatin-induced-toxicity
#9
Y E Yoon, K S Lee, Y J Lee, H H Lee, W K Han
BACKGROUND: We investigated the effects of a soluble carbon monoxide-releasing molecule (CORM) in cisplatin-induced cytotoxicity and ischemia-reperfusion injury (IRI) in vitro. METHODS: The effects of CORM-3 (12.5-200 μM) were assessed in normal kidney epithelial cells (HK-2, LLC-PK1) and renal cancer cells (Caki-1, Caki-2) subjected to cisplatin (50-200 μM) or IRI. To induce IRI, cells were placed in an anaerobic chamber (37°C, 95% nitrogen, 5% carbon dioxide) for 48 hours...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28573734/il-17a-blockade-or-deficiency-does-not-affect-progressive-renal-fibrosis-following-renal-ischaemia-reperfusion-injury-in-mice
#10
Anja Thorenz, Nicole Völker, Jan Hinrich Bräsen, Rongjun Chen, Mi-Sun Jang, Song Rong, Hermann Haller, Torsten Kirsch, Gertrud Vieten, Christian Klemann, Faikah Gueler
OBJECTIVES: IL-17A contributes to acute kidney injury and fibrosis. Therefore, we asked whether IL-17A deficiency or treatment with a IL-17A blocking antibody impacts severe renal ischaemia reperfusion injury (IRI) and the progression to chronic kidney disease (CKD). METHODS: IL-17A-deficient and wild-type (WT) mice underwent transient unilateral renal pedicle clamping for 45 min to induce IRI and subsequent renal fibrosis. Furthermore, a neutralizing anti-IL-17A antibody (mAb) was injected into WT mice before induction of renal IRI intravenously...
June 2, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28560443/rutaecarpine-alleviates-renal-ischemia-reperfusion-injury-in-rats-by-suppressing-the-jnk-p38-mapk-signaling-pathway-and-interfering-with-the-oxidative-stress-response
#11
Chunhua Wang, Zongyao Hao, Jun Zhou, Li Zhang, Yexiang Sun, Chaozhao Liang
In the present study, the protective effect and the potential underlying mechanism of rutaecarpine (Ru) on renal ischemia reperfusion injury (IRI) in rats were investigated. A renal ischemia reperfusion mouse model was established. Ru at 30, 60 mg/kg administered intraperitoneally prior to reperfusion led to attenuated renal injury. The results demonstrated that Ru treatment significantly reduced the content of serum creatinine, urea nitrogen and neutrophil gelatinase‑associated lipocalin in rats with renal IRI...
July 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28541267/choroidal-melanoma-sector-melanocytosis-and-retinal-pigment-epithelial-microdetachments-in-birt-hogg-dub%C3%A3-syndrome
#12
Charlotte L Marous, Molly R Marous, R Joel Welch, Jerry A Shields, Carol L Shields
PURPOSE: Birt-Hogg-Dubé Syndrome (BHDS) is a rare autosomal dominant condition that can predispose patients to numerous cutaneous fibrofolliculomas and other cutaneous lesions, pulmonary cysts with spontaneous pneumothorax, and multifocal renal tumors and cancer. The genetic mutations responsible for BHDS are related to tumor suppression and the mammalian target of rapamycin (mTOR) pathway. Previous reports of the ocular findings in BHDS include eyelid fibrofolliculomas, "flecked chorioretinopathy," and one report of choroidal melanoma...
May 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28539382/il233-a-novel-il-2-and-il-33-hybrid-cytokine-ameliorates-renal-injury
#13
Marta E Stremska, Sheethal Jose, Vikram Sabapathy, Liping Huang, Amandeep Bajwa, Gilbert R Kinsey, Poonam R Sharma, Saleh Mohammad, Diane L Rosin, Mark D Okusa, Rahul Sharma
CD4(+)Foxp3(+) regulatory T cells (Tregs) protect the kidney during AKI. We previously found that IL-2, which is critical for Treg homeostasis, upregulates the IL-33 receptor (ST2) on CD4(+) T cells, thus we hypothesized that IL-2 and IL-33 cooperate to enhance Treg function. We found that a major subset of Tregs in mice express ST2, and coinjection of IL-2 and IL-33 increased the number of Tregs in lymphoid organs and protected mice from ischemia-reperfusion injury (IRI) more efficiently than either cytokine alone...
May 24, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28520087/geographic-variation-and-risk-factors-for-systemic-and-limb-ischemic-events-in-patients-with-symptomatic-peripheral-artery-disease-insights-from-the-reach-registry
#14
Jérémie Abtan, Deepak L Bhatt, Yedid Elbez, Emmanuel Sorbets, Kim Eagle, Christopher M Reid, Iris Baumgartner, David Wu, Mary E Hanson, Hakima Hannachi, Puneet K Singhal, Philippe Gabriel Steg, Gregory Ducrocq
BACKGROUND: Patients with symptomatic peripheral artery disease (PAD) are at high risk of ischemic events. However, data about predictors of this risk are limited. HYPOTHESIS: We analyzed baseline characteristics and 4-year follow-up of patients enrolled in the international REduction of Atherothrombosis for Continued Health (REACH) Registry with symptomatic PAD and no history of stroke/transient ischemic attack to describe annual rates of recurrent ischemic events globally and geographically...
May 18, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28515179/arginase-2-mediates-renal-ischemia-reperfusion-injury
#15
Wesley M Raup-Konsavage, Ting Gao, Timothy K Cooper, Sidney M Morris, W Brian Reeves, Alaa S Awad
Novel therapeutic interventions for preventing or attenuating kidney injury following ischemia/reperfusion injury (IRI) remain a focus of significant interest. Currently, there are no definitive therapeutic or preventive approaches available for ischemic acute kidney injury (AKI). Our objective is to determine (a) whether renal arginase activity or expression is increased in renal IRI and (b) whether arginase plays a role in development of renal IRI. The impact of arginase activity and expression on renal damage was evaluated in male C57BL/6J (WT) and arginase-2 deficient (Arg2(-/-) ) mice subjected to bilateral renal ischemia for 28min followed by reperfusion for 24h...
May 17, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28501343/changes-of-renal-sinus-fat-and-renal-parenchymal-fat-during-an-18-month-randomized-weight-loss-trial
#16
Hila Zelicha, Dan Schwarzfuchs, Ilan Shelef, Yftach Gepner, Gal Tsaban, Lilac Tene, Anat Yaskolka Meir, Avital Bilitzky, Oded Komy, Noa Cohen, Nitzan Bril, Michal Rein, Dana Serfaty, Shira Kenigsbuch, Yoash Chassidim, Benjamin Sarusi, Joachim Thiery, Uta Ceglarek, Michael Stumvoll, Matthias Blüher, Yosef S Haviv, Meir J Stampfer, Assaf Rudich, Iris Shai
BACKGROUND & AIMS: Data regarding the role of kidney adiposity, its clinical implications, and its dynamics during weight-loss are sparse. We investigated the effect of long-term weight-loss induced intervention diets on dynamics of renal-sinus-fat, an ectopic fat depot, and %renal-parenchymal-fat, lipid accumulation within the renal parenchyma. METHODS: We randomized 278 participants with abdominal obesity/dyslipidemia to low-fat or Mediterranean/low-carbohydrate diets, with or without exercise...
May 2, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28500075/overexpression-of-human-cd55-and-cd59-or-treatment-with-human-cd55-protects-against-renal-ischemia-reperfusion-injury-in-mice
#17
Anjan K Bongoni, Bo Lu, Evelyn J Salvaris, Veena Roberts, Doreen Fang, Jennifer L McRae, Nella Fisicaro, Karen M Dwyer, Peter J Cowan
Deficiency in the membrane-bound complement regulators CD55 and CD59 exacerbates renal ischemia-reperfusion injury (IRI) in mouse models, but the effect of increasing CD55 and CD59 activity has not been examined. In this study, we investigated the impact of overexpression of human (h) CD55 ± hCD59 or treatment with soluble rhCD55 in a mouse model of renal IRI. Unilaterally nephrectomised mice were subjected to 18 (mild IRI) or 22 min (moderate IRI) warm renal ischemia, and analyzed 24 h after reperfusion for renal function (serum creatinine and urea), complement deposition (C3b/c and C9), and infiltration of neutrophils and macrophages...
June 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28496138/severe-bilateral-ischemic-reperfusion-renal-injury-hyperacute-and-acute-changes-in-apparent-diffusion-coefficient-t1-and-t2-mapping-with-immunohistochemical-correlations
#18
Sheung-Fat Ko, Hon-Kan Yip, Yen-Yi Zhen, Chia-Chang Lee, Chen-Chang Lee, Shyh-Jer Huang, Chung-Cheng Huang, Shu-Hang Ng, Jui-Wei Lin
The aim of this study was to investigate the hyperacute and acute changes in apparent diffusion coefficient (ADC), T1, and T2 mapping in rat kidneys after severe bilateral renal ischemic-reperfusion injury (IRI). After baseline MRI, 24 Spraque-Dawley rats with renal IRI were divided equally as group 1 (post-IRI MRI at 6 hours, days 1, 3, and 7) and groups 2, 3, and 4 (post-IRI MRI at 6 hours; 6 hours and day 1; 6 hours, days 1 and 3, respectively), while six other rats without IRI (group 5) were used as sham control...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28488081/plasma-alpha-tochopherol-determined-by-hplc-in-dogs-at-different-stages-of-chronic-kidney-disease-a-retrospective-study
#19
Ilaria Lippi, F Perondi, V Meucci, C Mannarini, L Intorre, G Guidi
The aim of the present study was to investigate retrospectively the plasma concentration of alpha-tocopherol in dogs with naturally acquired chronic kidney disease (CKD), at different stages of severity. Forty dogs (CKD group) with different stages of CKD (IRIS 1 n=12, IRIS 2 n=8, IRIS 3 n=11, IRIS 4 n=9) and 20 clinically healthy dogs were considered. Plasma alpha-tocopherol was assessed in both groups through high performance liquid chromatography (HPLC). Dogs of CKD group showed significantly lower (p=0...
May 9, 2017: Veterinary Research Communications
https://www.readbyqxmd.com/read/28479364/involvement-of-organic-cation-transporters-in-the-kinetics-of-trimethylamine-n-oxide
#20
Takeshi Miyake, Tadahaya Mizuno, Tatsuki Mochizuki, Miyuki Kimura, Shunji Matsuki, Shin Irie, Ichiro Ieiri, Maeda Kazuya, Hiroyuki Kusuhara
Recent studies suggest that trimethylamine N-oxide (TMAO) is associated with the development of chronic kidney disease and heart failure. In this study, we investigated the importance of organic cation transporters (OCTs) in the clearance and tissue distribution of TMAO. The low affinity and high capacity transport of TMAO by mouse and human OCT1 and OCT2 was observed. Uptake and efflux of TMAO by the mouse hepatocytes as well as TMAO uptake into mouse kidney slices were significantly decreased by the addition of tetraethylammonium or Oct1/2 double knockout (dKO)...
May 4, 2017: Journal of Pharmaceutical Sciences
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