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CKD Biomarker

Sridevi Gutta, Nadja Grobe, Meenasri Kumbaji, Hassan Osman, Mohammad Saklayen, Gengxin Li, Khalid M Elased
ACE2 and NEP are metalloproteases which are highly expressed in the renal proximal tubules. ACE2 and NEP generate renoprotective angiotensin (1-7) from angiotensin II (Ang II) and Ang I, respectively, and therefore could have a major role in chronic kidney disease (CKD). Recent data demonstrated increased urinary ACE2 in diabetic patients with CKD and kidney transplants. We tested the hypothesis that urinary ACE2, NEP and ADAM17 are increased and could be risk predictors of CKD in diabetic patients. Urinary and plasma ACE2, NEP, and ADAM17 were investigated in twenty healthy nondiabetics (ND), and forty diabetic patients with normoalbuminuria (Dnormo), microalbuminuria (Dmicro) and macroalbuminuria (Dmacro) using ELISA, Western blot, fluorogenic and novel mass spectrometric-based enzyme assays...
March 21, 2018: American Journal of Physiology. Renal Physiology
Jun Zhang, Xiaohong Xiang, Shuangshuang Shu, Cuiling Zhang, Yuling Liang, Tingting Jiang, Wenying Zhang, Tingting Guo, Xiujie Liang, Xun Tang
It is well known that autophagy serves a crucial role in renal tubular epithelial cell (RTEC) injury in the pathogenesis of chronic kidney disease (CKD). The accumulation of advanced oxidation protein products (AOPPs) also participates in the progression of CKD. However, the effects of AOPPs on autophagy remain unknown. To clarify the underlying mechanism of RTEC injury in CKD, the effect of AOPPs on HK-2 cells, an RTEC cell line, was investigated. The results of the present study revealed that AOPP exposure downregulated the expression of B-cell lymphoma-2-interacting myosin-like coiled-coil protein 1, reduced the conversion of microtubule-associated proteins 1 light chain 3B (LC3)-I to LC3-II and the formation of autophagosomes, and lead to an accumulation of p62...
April 2018: Experimental and Therapeutic Medicine
Syazrah Salam, Orla Gallagher, Fatma Gossiel, Margaret Paggiosi, Arif Khwaja, Richard Eastell
Background Renal osteodystrophy is common in advanced CKD, but characterization of bone turnover status can only be achieved by histomorphometric analysis of bone biopsy specimens (gold standard test). We tested whether bone biomarkers and high-resolution peripheral computed tomography (HR-pQCT) parameters can predict bone turnover status determined by histomorphometry. Methods We obtained fasting blood samples from 69 patients with CKD stages 4-5, including patients on dialysis, and 68 controls for biomarker analysis (intact parathyroid hormone [iPTH], procollagen type 1 N-terminal propeptide [PINP], bone alkaline phosphatase [bALP], collagen type 1 crosslinked C-telopeptide [CTX], and tartrate-resistant acid phosphatase 5b [TRAP5b]) and scanned the distal radius and tibia of participants by HR-pQCT...
March 19, 2018: Journal of the American Society of Nephrology: JASN
Ryan B Gil, Alberto Ortiz, Maria D Sanchez-Niño, Katerina Markoska, Eva Schepers, Raymond Vanholder, Griet Glorieux, Philippe Schmitt-Kopplin, Silke S Heinzmann
Background: Chronic kidney disease (CKD) is a recognized global health problem. While some CKD patients remain stable after initial diagnosis, others can rapidly progress towards end-stage renal disease (ESRD). This makes biomarkers capable of detecting progressive forms of CKD extremely valuable, especially in non-invasive biofluids such as urine. Screening for metabolite markers using non-targeted metabolomic techniques like nuclear magnetic resonance spectroscopy is increasingly applied to CKD research...
March 14, 2018: Nephrology, Dialysis, Transplantation
Mohammed Al Za'abi, Suhail Al Salam, Yousuf Al Suleimani, Priyadarsini Manoj, Abderrahim Nemmar, Badreldin H Ali
BACKGROUND/AIMS: The effect of treatment with gum acacia (GA), a prebiotic shown previously to ameliorate chronic kidney disease (CKD), in diabetic and non - diabetic rats with adenine - induced CKD has been investigated using several conventional and novel physiological, biochemical, and histopathological parameters. METHODS: Diabetes mellitus was induced in rats by a single injection of streptozotocin (STZ). Diabetic and non - diabetic rats were randomly divided into several groups, and given either normal food or food mixed with adenine (0...
March 13, 2018: Cellular Physiology and Biochemistry
Hyun Lee, Minoru Fujimoto, Tomoharu Ohkawara, Hiromi Honda, Satoshi Serada, Yoshio Terada, Tetsuji Naka
Recent evidence suggests that renal tubular injury plays a key role in deterioration of renal function in both chronic kidney disease (CKD) and acute kidney injury (AKI). Since commonly used biochemical indicators such as GFR, serum creatinine, blood urea nitrogen and creatinine clearance are inappropriate for detecting alteration in renal tubules, biomarkers reflecting renal tubular injury have been extensively explored. Our research group identified leucine rich α-2 glycoprotein (LRG) as a novel serum biomarker for various inflammatory diseases such as rheumatoid arthritis and inflammatory bowel disease...
March 16, 2018: Biochemical and Biophysical Research Communications
Paul Glendenning, S A Paul Chubb, Samuel Vasikaran
Bone turnover marker (BTM's) concentrations in blood and urine reflect bone-remodelling activity, and may be useful adjuncts in the diagnosis and management of metabolic bone diseases. Newer biomarkers, mainly bone regulatory proteins, are currently being investigated to elucidate their role in bone metabolism and disease and may in future be useful in clinical diagnosis and management of metabolic bone disease. BTM concentrations increase around menopause in women, and at a population level the degree of increase in BTM's reflect bone loss...
March 12, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
Yanting Yu, Feng Bai, Nan Qin, Wenjin Liu, Qi Sun, Yang Zhou, Junwei Yang
BACKGROUND: Renal fibrosis is a common outcome of nearly all kinds of chronic kidney disease (CKD) and eventually progresses to end-stage renal disease. The identification of an optimal biomarker of renal fibrosis to replace the invasive renal biopsy will have important clinical implications. METHODS: We isolated urinary exosomes from 50 participants and examined the exosomal protein content and particle number in 38 CKD patients with different degrees of renal fibrosis and in 12 normal individuals...
March 14, 2018: Nephron
Irfanullah Khan, Amer Hayat Khan, Azreen Syazril Adnan, Syed Azhar Syed Sulaiman, Azhar Bin Amir Hamzah, Nafees Ahmed, Amjad Khan
PURPOSE: Creatinine is normally used to evaluate kidney function among elderly patients in clinical practice, which has been reported to be affected by socio-demographic factors like BMI and age. Cystatin C a newly introduced biomarker may be more efficient in identifying kidney function in obese and aged CKD patients. The aim of the current study was to assess the effect of BMI on endogenous biomarkers (cystatin C and creatinine) among elderly CKD patients in Malaysia, a first such study in the country...
March 13, 2018: International Urology and Nephrology
Hamid Tayebi Khosroshahi, Nosratola D Vaziri, Behzad Abedi, Bahlol Habibi Asl, Morteza Ghojazadeh, Wanghui Jing, Amir Mansur Vatankhah
INTRODUCTION: Systemic inflammation and oxidative stress play a central role in the pathogenesis of cardiovascular disease and numerous other complications of CKD. Recent studies demonstrated that consumption of a diet enriched with amylose (HAM-RS2), attenuates oxidative stress and inflammation, and improves intestinal microbiome in CKD rats. The present study was designed to explore the effect of dietary amylose supplementation in hemodialysis patients. METHODS: Forty-six stable hemodialysis patients were randomized to receive biscuits containing 20 g/day during the first four weeks and 25 g/day in the next four weeks of either HAM-RS2 or wheat-flour...
March 13, 2018: Hemodialysis International
Alma L Saucedo-Yanez, Marlene M Perales-Quintana, David Paniagua-Vega, Concepcion Sanchez-Martinez, Paula Cordero-Perez, Noemi Waskman Minsky
Chronic kidney disease (CKD) is a progressive condition characterized by a permanent and irreversible loss of renal function. In accordance to international guidelines, CKD clinical diagnosis methods are based on creatinine and albumin levels and glomerular filtration rate. Unfortunately, these parameters are scarcely affected in early stages, and its inherent intrinsic variability only allows for the identification of intermediate and advanced stages, when life expectancy has become shorter and treatment poses a significant financial investment...
March 6, 2018: Current Medicinal Chemistry
Feijie Wang, Liang Sun, Qi Sun, Liming Liang, Xianfu Gao, Rongxia Li, An Pan, Huaixing Li, Yueyi Deng, Frank B Hu, Jiarui Wu, Rong Zeng, Xu Lin
BACKGROUND AND OBJECTIVES: Metabolomics is instrumental in identifying novel biomarkers of kidney function to aid in the prevention and management of CKD. However, data linking the metabolome to incident eGFR are sparse, particularly in Asian populations with different genetic backgrounds and environmental exposures. Therefore, we aimed to investigate the associations of amino acid and acylcarnitine profiles with change in eGFR in a Chinese cohort. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This study included 1765 community-living Chinese adults aged 50-70 years with baseline eGFR≥60 ml/min per 1...
March 8, 2018: Clinical Journal of the American Society of Nephrology: CJASN
Primploy Greeviroj, Thidarat Kitrungphaiboon, Pisut Katavetin, Kearkiat Praditpornsilpa, Somchai Eiam-Ong, Bertrand L Jaber, Paweena Susantitaphong
BACKGROUND: Cinacalcet could decrease serum calcium, phosphate, and parathyroid hormone (PTH) in previous meta-analyses. However, the effect of cinacalcet on the new biomarkers such as fibroblast growth factor-23 (FGF-23), bone markers, and vascular calcification are still unestablished. We conducted a meta-analysis to examine the effects of cinacalcet on all laboratory and clinical spectrums of chronic kidney disease-mineral bone disorders (CKD-MBD). METHODS: A systematic literature search was conducted in MEDLINE, Scopus, Cochrane Central Register of Controlled Trials, and Clinical Trials...
March 7, 2018: Nephron
Ayu Ogawa-Akiyama, Hitoshi Sugiyama, Masashi Kitagawa, Keiko Tanaka, Akifumi Onishi, Toshio Yamanari, Hiroshi Morinaga, Haruhito Adam Uchida, Kazufumi Nakamura, Hiroshi Ito, Jun Wada
Cystatin C is a cysteine protease inhibitor that is produced by nearly all human cells. The serum level of cystatin C is a stronger predictor of the renal outcome and the risk of cardiovascular events than the creatinine level. The resistive index (RI) on renal Doppler ultrasonography is a good indicator of vascular resistance as well as the renal outcomes in patients with chronic kidney disease (CKD). However, it is unclear whether serum cystatin C is associated with signs of vascular dysfunction, such as the renal RI...
2018: PloS One
Jason H Greenberg, Prasad Devarajan, Heather R Thiessen-Philbrook, Catherine Krawczeski, Chirag R Parikh, Michael Zappitelli
BACKGROUND: We previously reported that children undergoing cardiac surgery are at high risk for long-term chronic kidney disease (CKD) and hypertension, although postoperative acute kidney injury (AKI) is not a risk factor for worse long-term kidney outcomes. We report here our evaluation of renal injury biomarkers 5 years after cardiac surgery to determine whether they are associated with postoperative AKI or long-term CKD and hypertension. METHODS: Children aged 1 month to 18 years old undergoing cardiopulmonary bypass were recruited to this prospective cohort study...
March 6, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
Alexander Fisher, Leon Fisher, Wichat Srikusalanukul, Paul N Smith
Aim: To develop a practical model for classification bone turnover status and evaluate its clinical usefulness. Methods: Our classification of bone turnover status is based on internationally recommended biomarkers of both bone formation (N-terminal propeptide of type1 procollagen, P1NP) and bone resorption (beta C-terminal cross-linked telopeptide of type I collagen, bCTX), using the cutoffs proposed as therapeutic targets. The relationships between turnover subtypes and clinical characteristic were assessed in1223 hospitalised orthogeriatric patients (846 women, 377 men; mean age 78...
2018: International Journal of Medical Sciences
Jennifer Sjaarda, Hertzel C Gerstein, Salim Yusuf, Darin Treleaven, Michael Walsh, Johannes F E Mann, Sibylle Hess, Guillaume Paré
Many biomarkers have been epidemiologically linked with CKD; however, the possibility that such associations are due to reverse causation or confounding limits the utility of these biomarkers. To overcome this limitation, we used a Mendelian randomization (MR) approach to identify causal mediators of CKD. We performed MR by first identifying genetic determinants of 227 serum protein biomarkers assayed in 4147 participants of the Outcome Reduction with Initial Glargine Intervention (ORIGIN) trial who had early or prediabetes, and assessing the effects of these biomarkers on CKD in the CKD genetics consortium ( n =117,165; 12,385 cases) using the inverse-variance weighted (fixed-effects) method...
March 6, 2018: Journal of the American Society of Nephrology: JASN
Hyo Jin Kim, Eunjeong Kang, Yun Kyu Oh, Yeong Hoon Kim, Seung Hyeok Han, Tae Hyun Yoo, Dong-Wan Chae, Joongyub Lee, Curie Ahn, Kook-Hwan Oh
BACKGROUND: Klotho, a protein linked to aging, has emerged as a pivotal player in mineral bone metabolism and might explain the relationship between chronic kidney disease (CKD) and cardiovascular disease (CVD). The present study aimed to investigate the association between serum klotho and cardiac parameters from a large-scale Korean CKD cohort. METHODS: We analyzed 2101 participants from KoreaN Cohort Study for Outcome in Patients With Chronic Kidney Disease (KNOW-CKD) cohort who had been measured for serum klotho levels...
March 5, 2018: BMC Nephrology
Wen-Qi Yang, Shan Mou, Li Xu, Feng-Hua Li, Hong-Li Li
The goal of the study described here was to evaluate the degree of tubulointerstitial injury in patients with chronic kidney disease (CKD) using a more accurate model that combines renal sonographic parameters and laboratory biomarkers. A total of 308 patients were enrolled. The study protocol included conventional ultrasound, contrast-enhanced ultrasonography and renal biopsy. CKD patients were divided into normal and mild (≤25%), moderate (26%-50%) and severe (>50%) tubulointerstitial injury groups. We created a model comprising peak intensity, time to peak, urinary retinol-binding protein and β2 -microglobulin that could discriminate severe (>50%) tubulointerstitial injury...
March 1, 2018: Ultrasound in Medicine & Biology
Verônica Torres da Costa E Silva, Elerson C Costalonga, Fernanda O Coelho, Renato A Caires, Emmanuel A Burdmann
Cancer patients are living longer. The sequelae of cancer treatment and the role of comorbid conditions present before the diagnosis, such as CKD, have been increasingly recognized. The interface between CKD and cancer is multifaceted. CKD is frequently observed in patients with cancer, and cancer treatment contributes to CKD development and progression. In addition, CKD has been recognized as an important risk factor for cancer development and reduced specific cancer survival. In this context, an accurate evaluation of the glomerular filtration rate (GFR) during oncologic treatment is pivotal and is used to define surgery strategies, program prophylactic management of contrasted examinations, make decisions on cisplatin eligibility, and adjust drug prescriptions, particularly chemotherapy agents...
January 2018: Advances in Chronic Kidney Disease
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