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ros and kidney

Naif O Al-Harbi, Ahmed Nadeem, Sheikh F Ahmad, Moureq R Alotaibi, Abdullah F AlAsmari, Wael A Alanazi, Mohammad M Al-Harbi, Ahmad M El-Sherbeeny, Khalid E Ibrahim
Sepsis affects millions of people worldwide and is associated with acute kidney injury (AKI). Innate and adaptive immune cells have been shown to play an important role in AKI through release of various inflammatory mediators which include reactive oxidant species (ROS). Acetate, a short chain fatty acid produced by gut bacteria has anti-inflammatory properties and has also been shown to modulate oxidative stress in different immune cells. Effects of acetate have been shown to be both GPR43 dependent and independent in different cells/tissues...
March 12, 2018: International Immunopharmacology
A M Rodrigues, R S Serralha, C Farias, G R Punaro, M J S Fernandes, Elisa Mieko Suemitsu Higa
Diabetes mellitus is characterized by increased levels of reactive oxygen species (ROS), leading to high levels of adenosine triphosphate (ATP) and the activation of purinergic receptors (P2X7 ), which results in cell death. Klotho was recently described as a modulator of oxidative stress and as having anti-apoptotic properties, among others. However, the roles of P2X7 and klotho in the progression of diabetic nephropathy are still unclear. In this context, the aim of the present study was to characterize P2X7 and klotho in several stages of diabetes in rats...
March 14, 2018: Purinergic Signalling
Laura Lopez-Sanz, Susana Bernal, Carlota Recio, Iolanda Lazaro, Ainhoa Oguiza, Ana Melgar, Luna Jimenez-Castilla, Jesus Egido, Carmen Gomez-Guerrero
Oxidative stress resulting from excessive production of reactive oxygen species (ROS) or impaired antioxidant defenses is closely related to the development of diabetic vascular complications, including nephropathy and atherosclerosis. Chronic activation of Janus kinase/Signal transducer and activator of transcription (JAK/STAT) signaling pathway contributes to diabetic complications by inducing expression of genes involved in cell proliferation, fibrosis, inflammation, and oxidative stress. Suppressors of cytokine signaling (SOCS) family of endogenous JAK/STAT regulators is an attractive target for therapeutic intervention...
March 14, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
Muneeb U Rehman, Shahzada Mudasir Rashid, Saiema Rasool, Sheeba Shakeel, Bilal Ahmad, Sheikh Bilal Ahmad, Hassan Madkhali, Majid Ahmad Ganaie, Sabiya Majid, Showkat Ahmad Bhat
Development of diabetic nephropathy (DN) is directly linked to oxidative stress and inflammation. In this context, inflammatory and oxidative markers have gained much attention as targets for therapeutic intervention. We studied the effect of zingerone in a streptozotocin/high fat diet (STZ/HFD)-induced type 2 diabetic Wistar rat model. Zingerone also known as vanillyl acetone is a pharmacologically active compound present usually in dry ginger. STZ/HFD caused excessive increase in ROS and inflammation in experimental animals...
March 14, 2018: Archives of Physiology and Biochemistry
Haesol Lee, Dahae Lee, Ki Sung Kang, Ji Hoon Song, You-Kyoung Choi
Cisplatin is a well-known anticancer drug frequently used for treating solid tumors, including ovarian, testicular, bladder, and cervical tumors. However, usage of cisplatin has been limited because of its adverse effects, particularly nephrotoxicity. Therefore, the present study sought to investigate the protective effect of formononetin against cisplatin-induced cytotoxicity in LLC-PK1 pig kidney epithelial cells as well as the anticancer effect of cisplatin in three different human cervical cancer cell lines, including HeLa, SiHa, and CaSKi cells...
March 12, 2018: International Journal of Molecular Sciences
Seon Min Woo, Seung Un Seo, Kyoung-Jin Min, Taeg Kyu Kwon
BIX-01294 (BIX), a G9a histone methyltransferase inhibitor, has been reported for its anti-proliferative and anticancer activities against various cancer cell lines. In this study, we investigated whether BIX could sensitize TRAIL-mediated apoptosis in various cancer cells. Combined treatment with BIX and TRAIL markedly induced apoptosis in human renal carcinoma (Caki, ACHN, and A498), breast carcinoma (MCF-7), and lung carcinoma (A549) cells. In contrast, BIX and TRAIL co-treatment did not induce apoptosis in normal cells, specifically mouse kidney cell (TCMK-1) and human skin fibroblast (HSF)...
December 2018: Cell Death Discovery
Danielle A Guimaraes, Madla A Dos Passos, Elen Rizzi, Lucas C Pinheiro, Jefferson H Amaral, Raquel F Gerlach, Michele M Castro, Jose E Tanus-Santos
Cardiac hypertrophy is a common consequence of chronic hypertension and leads to heart failure and premature death. The anion nitrite is now considered as a bioactive molecule able to exert beneficial cardiovascular effects. Previous results showed that nitrite attenuates hypertension-induced increases in reactive oxygen species (ROS) production in the vasculature. Whether antioxidant effects induced by nitrite block critical signaling pathways involved in cardiac hypertrophy induced by hypertension has not been determined yet...
March 9, 2018: Free Radical Biology & Medicine
Jie-Qiong Ma, Chan-Min Liu, Wei Yang
Rutin, a natural flavonoid, possess beneficial health effects. However, its renoprotective effect against carbon tetrachloride (CCl4 ) induced injury and the underlying mechanism is not clarified. The current study aims is to identify the therapeutic effects of rutin on oxidative stress, inflammation and apoptosis in mouse kidney exposed to CCl4 . ICR mice received CCl4 with or without rutin co-administration for one week. Compared with the control group, mice receiving CCl4 alone showed kidney injury as evidenced by elevation in serum biochemical markers, inflammation, caspase-3 activity and apoptosis in kidney, while rutin administration significantly attenuated these pathophysiological changes...
March 6, 2018: Chemico-biological Interactions
Yasin Tülüce, Bewar Ali Ahmed, İsmail Koyuncu, Mustafa Durgun
Colorectal cancer (CRC) is the third most common tumor, malignant and has developed one of the main reasons of cancer mortality. According to studies conducted recently; carbonic anhydrase 9 (CAIX) is an especially attractive target for cancer therapy, in part since it is limited way expressed in normal tissues on the other hand in a wide variety of solid neoplasia are overexpressed. The aim of this study was to appreciate the effects of CAIX inhibitor, namely novel synthesized sulfonamide derivative (H-4i) with high affinity for CAIX, in CAIX-positive human colorectal cancer cell (HT-29) and CAIX-negative human normal embryonic kidney cell line (HEK-293)...
March 9, 2018: Journal of Bioenergetics and Biomembranes
Tao Ding, Shaofei Wang, Xuyao Zhang, Wenjing Zai, Jiajun Fan, Wei Chen, Qi Bian, Jingyun Luan, Yilan Shen, Yanda Zhang, Dianwen Ju, Xiaobin Mei
BACKGROUND: Diabetic nephropathy (DN), the leading cause of end-stage renal disease, is acknowledged as an independent risk factor for cardiovascular disease, which underlines the urgent need for new medications to DN. Dihydroquercetin (DHQ), an important natural dihydroflavone, exerts significant antioxidant, anti-inflammatory, and antifibrotic properties, but its effects on DN have not been investigated yet. PURPOSE: We aimed to explore the kidney protection effects of DHQ on DN rats induced by high-fat diet/streptozotocin in vivo and the underlying mechanisms of DHQ on renal cells including HBZY-1 and HK2 exposed to high glucose in vitro...
March 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Wei Li, Sheng Zhao, Fan Cheng, Ting Rao, Weimin Yu, Yuan Ruan, Run Yuan, Xiaobing Yao
The influence of intraabdominal pressure which is necessary to maintain the operating area during the surgery cannot be ignored especially on the kidneys. Many articles have reported the effect of intraabdominal pressure on normal kidneys. However, the influence of intraabdominal pressure on hydronephrosis kidneys is rarely studied. The aim of the present study was to clarify whether intraabdominal pressure tolerance is modified in various degrees of kidney hydronephrosis by evaluating oxidative damage and mitochondrial injuries...
March 1, 2018: Molecular Medicine Reports
Jihua Wu, Zhiwei Tao, Yaoliang Deng, Quan Liu, Yunlong Liu, Xiaofeng Guan, Xiang Wang
Calcifying nanoparticles (CNPs) play an important role in kidney stone formation, but the mechanism(s) are unclear. CNPs were isolated and cultured from midstream urine of patients with kidney stones. CNP morphology and characteristics were examined by electron microscopy and electrophoresis analysis. Chemical composition was analyzed using energy-dispersive X-ray microanalysis and Western blotting. Human renal proximal convoluted tubule cell (HK-2) cultures were exposed to CNPs for 0, 12 and 72 h, and production of reactive oxygen species (ROS), mitochondrial membrane potential and apoptosis levels were evaluated...
March 6, 2018: Urolithiasis
Orestes Foresto-Neto, Victor Ferreira Ávila, Simone Costa Alarcon Arias, Fernanda Florencia Fregnan Zambom, Lisienny Campoli Tono Rempel, Viviane Dias Faustino, Flavia Gomes Machado, Denise Maria Avancini Costa Malheiros, Hugo Abensur, Niels Olsen Saraiva Camara, Roberto Zatz, Clarice Kazue Fujihara
Recent studies suggest that NLRP3 inflammasome activation is involved in the pathogenesis of chronic kidney disease (CKD). Allopurinol (ALLO) inhibits xanthine oxidase (XOD) activity, and, consequently, reduces the production of uric acid (UA) and reactive oxygen species (ROS), both of which can activate the NLRP3 pathway. Thus, ALLO can contribute to slow the progression of CKD. We investigated whether inhibition of XOD by ALLO reduces NLRP3 activation and renal injury in the 5/6 renal ablation (Nx) model...
March 6, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
Mohammed Kawser Hossain, Subbroto Kumar Saha, Ahmed Abdal Dayem, Jung-Hyun Kim, Kyeongseok Kim, Gwang-Mo Yang, Hye Yeon Choi, Ssang-Goo Cho
Influenza virus remains a major health concern worldwide, and there have been continuous efforts to develop effective antivirals despite the use of annual vaccination programs. The purpose of this study was to determine the anti-influenza activity of Bax inhibitor-1 ( BI-1 ). Madin-Darby Canine Kidney (MDCK) cells expressing wild type BI-1 and a non-functional BI-1 mutant, BI-1 ∆C (with the C-terminal 14 amino acids deleted) were prepared and infected with A/PR/8/34 influenza virus. BI-1 overexpression led to the suppression of virus-induced cell death and virus production compared to control Mock or BI-1 ∆C overexpression...
March 2, 2018: International Journal of Molecular Sciences
Antonia Concetta Elia, Gabriele Magara, Claudio Caruso, Loretta Masoero, Marino Prearo, Paola Arsieni, Barbara Caldaroni, Ambrosius Josef Martin Dörr, Melissa Scoparo, Stefania Salvati, Paola Brizio, Stefania Squadrone, Maria Cesarina Abete
Arsenic (As) is a global contaminant of terrestrial and aquatic environments posing concern for environmental and human health. The effects of subacute concentrations of arsenic trioxide (AsIII ) and dimethylarsinic acid (DMAV ) were examined using Crandell Rees feline kidney (CRFK), human hepatocellular carcinoma (PLC/PRF/5), and epithelioma papulosum cyprini (EPC). Whole monolayer with suffering cells (confluence 100%, pyknosis and refractive cells; value scale = 2) led to identification of subacute As concentrations for the three cell lines...
March 2, 2018: Journal of Toxicology and Environmental Health. Part A
Sonam Sharma, Arusha Modi, Gopeshwar Narayan, Siva Hemalatha
Background: Exacum lawii (Gentianaceae), a bitter herb conventionally used in kidney diseases and eye problems, endemic to the Western coast and Southern part of India. Aim: Folklore reports encourage the author to explore the nephroprotective effect of the standardized ethanolic extract of E. lawii against cisplatin-induced renal toxicity in the rat to scientifically validate its traditional use. Materials and Methods: Ethanolic extract of the whole plant of E...
January 2018: Pharmacognosy Magazine
Qian Shi, Suryavathi Viswanadhapalli, William E Friedrichs, Chakradhar Velagapudi, Cédric Szyndralewiez, Shweta Bansal, Manzoor A Bhat, Goutam Ghosh Choudhury, Hanna E Abboud
The mechanism by which TSC2 inactivation or deficiency contributes to the pathology of tuberous sclerosis complex (TSC) is not fully clear. We show that renal angiomyolipomas from TSC patients and kidney cortex from Tsc2+/- mice exhibit elevated levels of reactive oxygen species (ROS). Downregulation of tuberin (protein encoded by TSC2 gene) in renal proximal tubular epithelial cells significantly increased ROS concomitant with enhanced Nox4. Similarly, we found elevated levels of Nox4 in the renal cortex of Tsc2+/- mice and in the renal angiomyolipomas from TSC patients...
February 28, 2018: Scientific Reports
Ting Liu, Xue-Mei Chen, Ji-Ye Sun, Xu-Shun Jiang, Yue Wu, Shan Yang, Hui-Zhe Huang, Xiong-Zhong Ruan, Xiao-Gang Du
BACKGROUND/AIMS: Chronic kidney disease (CKD) is often accompanied by hyperlipidemia, which accelerates progression of the disease. Podocyte injury can lead to dysfunction of the glomerular filtration barrier, which is associated with proteinuria, a risk marker for the progression of CKD. Our previous studies demonstrated that palmitic acid (PA) can induce podocyte apoptosis; however, the underlying mechanisms are unclear. In the present study, we investigated the specific molecular mechanisms of PA-induced apoptosis in cultured podocytes...
February 22, 2018: Kidney & Blood Pressure Research
Domingo Hernández, Juana Alonso-Titos, Ana María Armas-Padrón, Pedro Ruiz-Esteban, Mercedes Cabello, Verónica López, Laura Fuentes, Cristina Jironda, Silvia Ros, Tamara Jiménez, Elena Gutiérrez, Eugenia Sola, Miguel Angel Frutos, Miguel González-Molina, Armando Torres
The number of elderly patients on the waiting list (WL) for kidney transplantation (KT) has risen significantly in recent years. Because KT offers a better survival than dialysis therapy, even in the elderly, candidates for KT should be selected carefully, particularly in older waitlisted patients. Identification of risk factors for death in WL patients and prediction of both perioperative risk and long-term post-transplant mortality are crucial for the proper allocation of organs and the clinical management of these patients in order to decrease mortality, both while on the WL and after KT...
February 22, 2018: Kidney & Blood Pressure Research
Yachun Han, Xiaoxuan Xu, Chengyuan Tang, Peng Gao, Xianghui Chen, Xiaofen Xiong, Ming Yang, Shikun Yang, Xuejing Zhu, Shuguang Yuan, Fuyou Liu, Li Xiao, Yashpal S Kanwar, Lin Sun
NLRP3/IL-1β activation via thioredoxin (TRX)/thioredoxin-interacting protein (TXNIP) following mitochondria ROS (mtROS) overproduction plays a key role in inflammation. However, the involvement of this process in tubular damage in the kidneys of patients with diabetic nephropathy (DN) is unclear. Here, we demonstrated that mtROS overproduction is accompanied by decreases in TRX expression and TXNIP up-regulation. In addition, we discovered that mtROS overproduction is also associated with increases in NLRP3/IL-1β and TGF-β expression in the kidneys of patients with DN and db/db mice...
February 15, 2018: Redox Biology
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