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Renal dysfunction

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https://www.readbyqxmd.com/read/28333655/biochemical-and-electrocardiographic-studies-on-the-beneficial-effects-of-gallic-acid-in-cyclophosphamide-induced-cardiorenal-dysfunction
#1
Omolola Rachel Ogunsanwo, Ademola Adetokunbo Oyagbemi, Temidayo Olutayo Omobowale, Ebunoluwa Racheal Asenuga, Adebowale Bernard Saba
Background Cardiac toxicity is one of the life-threatening complications of cancer therapy. Cyclophosphamide (CYP) is an alkylating agent with potent antineoplastic and immunosuppressive properties and possibly the most widely used antineoplastic agent. Chronic cardiotoxicity associated with CYP is characterized by progressive heart failure developing from weeks to years after therapy. Methods In this study, rats were administered with (60 mg/kg and 120 mg/kg) alone or in combination with single intraperitoneal (200 mg/kg) administration of CYP for 7 days...
March 22, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28332510/recent-advances-in-understanding-hypertension-development-in-sub-saharan-africa
#2
REVIEW
A E Schutte, S Botha, C M T Fourie, L F Gafane-Matemane, R Kruger, L Lammertyn, L Malan, C M C Mels, R Schutte, W Smith, J M van Rooyen, L J Ware, H W Huisman
Consistent reports indicate that hypertension is a particularly common finding in black populations. Hypertension occurs at younger ages and is often more severe in terms of blood pressure levels and organ damage than in whites, resulting in a higher incidence of cardiovascular disease and mortality. This review provides an outline of recent advances in the pathophysiological understanding of blood pressure elevation and the consequences thereof in black populations in Africa. This is set against the backdrop of populations undergoing demanding and rapid demographic transition, where infection with the human immunodeficiency virus predominates, and where under and over-nutrition coexist...
March 23, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28332248/citrate-attenuates-vascular-calcification-in-chronic-renal-failure-rats
#3
Yan Ou, Zengying Liu, Shuiqin Li, Xiaojing Zhu, Yan Lin, Jin Han, Zhaoyang Duan, Lining Jia, Baosong Gui
Vascular calcification (VC) is a major contributor of cardiovascular dysfunction in chronic renal failure (CRF). Citrate binds calcium and inhibits the growth of calcium crystals. This present study intends to evaluate the effect of citrate on VC in adenine-induced CRF rats. The rats were randomly divided into five groups: the control group, the citrate control group, model group, model rats with low-dose treatment of citrate (216 mg/kg) and model rats with high-dose treatment of citrate (746 mg/kg). The rats were euthanized at 5 weeks with their blood and aorta in detection...
March 23, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28332137/correction-of-dilutional-anemia-induces-renal-dysfunction-in-diabetic-patients-undergoing-coronary-artery-bypass-grafting-a-consequence-of-microcirculatory-alterations
#4
Güçlü Aykut, Meltem Kilercik, Cem Arıtürk, Halim Ulugöl, Uğur Aksu, Türkan Kudsioğlu, Nazan Atalan, Nihan Yapıcı, Hasan Karabulut, Fevzi Toraman
BACKGROUND: In this study we aimed to evaluate the effects of dilutional anemia resulting from cardiopulmonary bypass (CPB) and its correction with red blood cell (RBC) transfusion on tissue oxygenation and renal function in diabetic patients undergoing coronary artery bypass grafting (CABG). METHOD: 70 diabetic patients who underwent elective CABG and whose hematocrit values had been between 24-28% at any time during CBP were prospectively randomized and equally allocated to two groups: patients who received RBC during CPB (group I, n = 35) vs...
March 22, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28331623/gum-arabic-as-novel-anti-oxidant-agent-in-sickle-cell-anemia-phase-ii-trial
#5
Lamis Kaddam, Imad Fadl-Elmula, Omer Ali Eisawi, Haydar Awad Abdelrazig, Mohammed Abdelraman Salih, Florian Lang, Amal M Saeed
BACKGROUND: Sickle cell anemia patients suffer from oxidative stress due to chronic inflammation and self-oxidation of sickle hemoglobin (Hb S). Chronic oxidative stress contributes to endothelial dysfunction, inflammation and multiple organ damage in sickle cell disease (SCD). Thus, antioxidant medication may favorably influence the disease. Gum Arabic (GA), edible, dried, gummy exudates from Acacia Senegal tree, has been claimed to act as an anti-oxidant and cytoprotective agent, protecting against experimental hepatic, renal and cardiac toxicities in rats...
2017: BMC Hematology
https://www.readbyqxmd.com/read/28331332/clinical-role-of-brexpiprazole-in-depression-and-schizophrenia
#6
REVIEW
Nishant B Parikh, Diana M Robinson, Anita H Clayton
Brexpiprazole, a serotonin-dopamine activity modulator, is the second D2 partial agonist to come to market and has been approved for the treatment of schizophrenia and as an adjunctive treatment in major depressive disorder. With less intrinsic activity than aripiprazole at the D2 receptor and higher potency at 5-HT2A, 5-HT1A, and α1B receptors, the pharmacological properties of brexpiprazole suggest a more tolerable side effect profile with regard to akathisia, extrapyramidal dysfunction, and sedation. While no head-to-head data are currently available, double-blind placebo-controlled studies show favorable results, with the number needed to treat (NNT) vs placebo of 6-15 for response in acute schizophrenia treatment and 4 for maintenance...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28331063/microrna-148b-regulates-megalin-expression-and-is-associated-with-receptor-downregulation-in-mice-with-unilateral-ureteral-obstruction
#7
Lu Wen, Pia K Andersen, Dina Mu Husum, Rikke Norregaard, Zhanzheng Zhao, Zhangsuo Liu, Henrik Birn
Megalin is a multiligand, endocytic receptor important for the normal, proximal tubule reabsorption of filtered proteins, hormones, enzymes, essential nutrients, and nephrotoxins. Megalin dysfunction has been associated with acute as well as chronic kidney diseases. Tubular proteinuria has been observed following unilateral ureteral obstruction (UUO) suggesting megalin dysfunction; however, the pathophysiological mechanism has not been resolved. In order to identify potential regulators of megalin expression, we examined renal microRNAs (miRNAs) expression and observed an upregulation of microRNA-148b (miR-148b) in obstructed mouse kidneys 7 days after UUO which was associated with a significant reduction in proximal tubule megalin expression and accumulation of megalin ligands...
March 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28331062/hypoxia-inducible-factor-1%C3%AE-activation-improves-renal-oxygenation-and-mitochondrial-function-in-early-chronic-kidney-disease
#8
Joanna L Thomas, Hai Pham, Ying Li, Elanore Hall, Guy A Perkins, Sameh S Ali, Hemal H Patel, Prabhleen Singh
Pathophysiology of chronic kidney disease (CKD) is driven by alterations in surviving nephrons to sustain renal function with ongoing nephron loss. Oxygen supply-demand mismatch, due to hemodynamic adaptations, with resultant hypoxia, plays an important role in the pathophysiology in early CKD. We sought to investigate the underlying mechanisms of this mismatch. We utilized the subtotal nephrectomy (STN) model of CKD to investigate the alterations in renal oxygenation linked to sodium (Na) transport and mitochondrial function in the surviving nephrons...
March 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28331061/an-intracellular-matrix-metalloproteinase-2-isoform-induces-tubular-regulated-necrosis-implications-for-acute-kidney-injury
#9
Carla S Ceron, Celine Baligand, Sunil K Joshi, Shaynah Wanga, Patrick M Cowley, Joy P Walker, Sang Heon Song, Rajeev Mahimkar, Anthony J Baker, Robert L Raffai, Zhen J Wang, David H Lovett
Acute kidney injury (AKI) causes severe morbidity, mortality, and chronic kidney disease (CKD). Mortality is particularly marked in the elderly and with pre-existing CKD. Oxidative stress is a common theme in models of AKI induced by ischemia/reperfusion (I/R) injury. We recently characterized an intracellular isoform of matrix metalloproteinase-2 (MMP-2) induced by oxidative stress-mediated activation of an alternate promoter in the first intron of the MMP-2 gene. This generates an N-terminal truncated MMP-2 isoform (NTT-MMP-2) that is intracellular and associated with mitochondria...
March 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28330766/water-metabolism-dysfunction-via-renin-angiotensin-system-activation-caused-by-liver-damage-in-mice-treated-with-microcystin-rr
#10
Qing Zhong, Feng Sun, Weiguang Wang, Wenqing Xiao, Xiaoni Zhao, Kangding Gu
Microcystins (MCs) are a group of monocyclic heptapeptide toxins that have been shown to act as potent hepatotoxins. However, the observed symptoms of water metabolism disruption induced by microcystin-RR (MC-RR) or MCs have rarely been reported, and a relatively clear mechanism has not been identified. In the present study, male mice were divided into 4 groups (A: 140μg/kg, B: 70μg/kg,C: 35μg/kg, and D: 0μg/kg) and administered MC-RR daily for a month. On day 8 of treatment, an increase in water intake and urine output was observed in the high-dose group compared with the control, and the symptoms worsened with the repeated administration of the toxin until day 30...
March 19, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28330599/impact-of-graft-preservation-solutions-for-liver-transplantation-on-early-cytokine-release-and-postoperative-organ-dysfunctions-a-pilot-study
#11
H Brisson, C Arbelot, A Monsel, C Parisot, M Girard, E Savier, C Vezinet, Q Lu, J-C Vaillant, J-L Golmard, G Gorochov, O Langeron, J-J Rouby
INTRODUCTION: During liver transplantation, graft ischemia-reperfusion injury leads to a systemic inflammatory response producing postoperative organ dysfunctions. The aim of this observational and prospective study was to compare the impact of Solution de conservation des organes et tissus (SCOT) 15 and University of Wisconsin (UW) preservation solutions on early cytokine release, postreperfusion syndrome and postoperative organ dysfunctions. METHODS: Thirty-seven liver transplantations were included: 21 in UW Group and 16 in SCOT 15 group...
March 15, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28329736/delay-in-renal-hemodynamic-response-to-a-meat-meal-in-severe-obesity
#12
Pietro Anastasio, Davide Viggiano, Miriam Zacchia, Claudia Altobelli, Giovambattista Capasso, Natale Gaspare De Santo
BACKGROUND/AIMS: Little information is available about the tubular functions and the renal adjustments that take place in obese subjects after a protein meal. How the excess fat may affect renal response to dietary proteins is currently only partially understood. This paper aims to address (i) whether severe obesity, in the absence of other comorbidities, is responsible of kidney dysfunction at either the glomerular or the tubular level and (ii) whether it compromises renal adaptations to a large protein meal...
March 23, 2017: Nephron
https://www.readbyqxmd.com/read/28329100/long-term-cardiovascular-changes-following-creation-of-arteriovenous-fistula-in-patients-with-end-stage-renal-disease
#13
Yogesh N V Reddy, Masaru Obokata, Patrick G Dean, Vojtech Melenovsky, Karl A Nath, Barry A Borlaug
Aims: Short-term studies have reported left ventricular (LV) dilatation following surgical creation of arteriovenous fistulas (AVF) or arteriovenous grafts (AVGs), but chronic cardiac structural and functional changes have not been examined or related to clinical outcomes following AVF/AVG. We sought to characterize the long-term changes in cardiac structure and function in patients undergoing shunt creation for haemodialysis. Methods and results: A retrospective analysis was performed of patients undergoing echocardiography before and after surgical AVF/AVG creation for the initiation of haemodialysis...
March 6, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28329085/renal-sodium-avidity-in-heart-failure-from-pathophysiology-to-treatment-strategies
#14
Wilfried Mullens, Frederik Hendrik Verbrugge, Petra Nijst, Wai Hong Wilson Tang
Increased neurohumoral stimulation resulting in excessive sodium avidity and extracellular volume overload are hallmark features of decompensated heart failure. Especially in case of concomitant renal dysfunction, the kidneys often fail to elicit effective natriuresis. While assessment of renal function is generally performed by measuring serum creatinine-a surrogate for glomerular filtration-, this only represents part of the nephron's function. Alterations in tubular sodium handling are at least equally important in the development of volume overload and congestion...
February 23, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28327551/genomic-reprograming-analysis-of-the-mesothelial-to-mesenchymal-transition-identifies-biomarkers-in-peritoneal-dialysis-patients
#15
Vicente Ruiz-Carpio, Pilar Sandoval, Abelardo Aguilera, Patricia Albar-Vizcaíno, María Luisa Perez-Lozano, Guadalupe T González-Mateo, Adrián Acuña-Ruiz, Jesús García-Cantalejo, Pedro Botías, María Auxiliadora Bajo, Rafael Selgas, José Antonio Sánchez-Tomero, Jutta Passlick-Deetjen, Dorothea Piecha, Janine Büchel, Sonja Steppan, Manuel López-Cabrera
Peritoneal dialysis (PD) is an effective renal replacement therapy, but a significant proportion of patients suffer PD-related complications, which limit the treatment duration. Mesothelial-to-mesenchymal transition (MMT) contributes to the PD-related peritoneal dysfunction. We analyzed the genetic reprograming of MMT to identify new biomarkers that may be tested in PD-patients. Microarray analysis revealed a partial overlapping between MMT induced in vitro and ex vivo in effluent-derived mesothelial cells, and that MMT is mainly a repression process being higher the number of genes that are down-regulated than those that are induced...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325719/near-death-by-milk-of-magnesia
#16
Ahmed Alaini, Carlos A Roldan, Karen Servilla, Elizabeth Sage Colombo
We report a case of hypermagnesemia associated with the use of milk of magnesia in a male patient with end-stage renal disease. After experiencing nausea and vomiting, he developed severe bradycardia and then asystole. Resuscitation efforts were successful; however, he developed atrial fibrillation with severe widening of the QRS and diffuse ST elevation, hypothermia, hypotension and apnoea requiring intubation. Initial diagnoses included ST-elevation myocardial infarction, cardiogenic and/or septic shock and hyperkalaemia...
March 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28325568/prevalence-and-management-of-systemic-hypertension-in-athletes
#17
Stefano Caselli, Antonia Vaquer Sequì, Erika Lemme, Filippo Quattrini, Alberto Milan, Flavio D'Ascenzi, Antonio Spataro, Antonio Pelliccia
The aim of the present study was to evaluate the prevalence, determinants, and clinical management of systemic hypertension in a large cohort of competitive athletes: 2,040 consecutive athletes (aged 25 ± 6 years, 64% men) underwent clinical evaluation including blood test, electrocardiogram, exercise test, echocardiography, and ophthalmic evaluation. Sixty-five athletes (3%) were identified with hypertension (men = 57; 87%) including 5 with a secondary cause (thyroid dysfunction in 3, renal artery stenosis in 1, and drug induced in 1)...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28323756/tdf-associated-renal-tubular-dysfunction-non-invasive-assessment-of-mitochondrial-injury
#18
Ryan Samuels, Carla Roca Bayerri, John A Sayer, D Ashley Price, Brendan Ai Payne
OBJECTIVE: To determine whether TDF-associated renal tubular dysfunction is associated with evidence of mitochondrial injury in urine. DESIGN: Single centre cross-sectional observational study of HIV positive outpatients. METHODS: Biochemistry was performed on paired serum and urine samples. Mitochondrial DNA (mtDNA) was studied by real-time PCR and long-range PCR on cellular fractions of urine. RESULTS: 48 subjects were enrolled of whom half were TDF-treated...
March 18, 2017: AIDS
https://www.readbyqxmd.com/read/28322835/role-of-mitochondrial-dysfunction-in-renal-fibrosis-promoted-by-hypochlorite-modified-albumin-in-a-remnant-kidney-model-and-protective-effects-of-antioxidant-peptide-ss-31
#19
Hao Zhao, Yan-Jun Liu, Zong-Rui Liu, Dong-Dong Tang, Xiao-Wen Chen, Yi-Hua Chen, Ru-Ning Zhou, Si-Qi Chen, Hong-Xin Niu
Oxidative stress aggravates renal fibrosis, a pathway involved in almost all forms of chronic kidney disease (CKD). However, the underlying mechanism involved in the pathogenesis of renal oxidative stress has not been completely elucidated. In this study, we explored the role and mechanism of hypochlorite-modified albumin (HOCl-alb) in mediating oxidative stress and fibrotic response in a remnant-kidney rat model. Five-sixths nephrectomy (5/6 NX) was performed on the rats and then the animals were randomly assigned to intravenous treatment with either vehicle alone, or HOCl-rat serum albumin (RSA) in the presence or absence of SS-31 (administered intraperitoneally)...
March 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28322756/establishing-reference-intervals-for-galectin-3-concentrations-in-serum-requires-careful-consideration-of-its-biological-determinants
#20
Magdalena Krintus, Marek Kozinski, Tomasz Fabiszak, Jacek Kubica, Mauro Panteghini, Grazyna Sypniewska
BACKGROUND: Appropriately established reference intervals for laboratory biomarkers may help the interpretation of their results and facilitate clinical utilization. OBJECTIVES: i) To determine reference intervals for serum galectin-3 measured using the Architect STAT immunoassay, and ii) to identify factors affecting galectin-3 concentrations. METHODS: We recruited 533 questionnaire-identified apparently healthy individuals, in which laboratory biomarkers were used to detect asymptomatic myocardial injury and dysfunction, ongoing inflammation, hyperglycemia, dyslipidemia, and renal dysfunction...
March 18, 2017: Clinical Biochemistry
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