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https://www.readbyqxmd.com/read/27902979/altered-systemic-adipokines-in-patients-with-chronic-urticaria
#1
Hoang Kim Tu Trinh, Duy Le Pham, Ga-Young Ban, Hyun-Young Lee, Hae-Sim Park, Young-Min Ye
BACKGROUND: Increasing evidence suggests that adipokines affect immune responses and chronic urticaria (CU) is associated with an altered immune response related to chronic systemic inflammation. Our objectives were to investigate whether adipokines are involved in CU pathogenesis and to outline relationships between adipokines and urticaria severity and quality of life. METHODS: Serum adiponectin, leptin, lipocalin-2 (LCN2), interleukin (IL)-10, IL-6, and tumor necrosis factor (TNF)-α concentrations were measured by enzyme-linked immunosorbent assays in 191 CU patients and 89 healthy controls...
December 1, 2016: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/27900597/l-pgds-mediates-vagus-nerve-stimulation-induced-neuroprotection-in-a-rat-model-of-ischemic-stroke-by-suppressing-the-apoptotic-response
#2
Lina Zhang, Jingxi Ma, Xinhao Jin, Gongwei Jia, Ying Jiang, Changqing Li
The role of lipocalin prostaglandin D2 synthase (L-PGDS) in brain ischemia has not been fully clarified to date. Vagus nerve stimulation (VNS) protects against cerebral ischemia/reperfusion (I/R) injury, but the mechanisms involved need further exploration. This study investigated the role of L-PGDS in cerebral I/R and whether this process was involved in the mechanism of VNS-mediated neuroprotection. Male Sprague-Dawley rats were pretreated with a lentiviral vector (LV) through intracerebroventricular injection, followed by middle cerebral artery occlusion (MCAO) and VNS treatment...
November 29, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27889773/evaluation-of-kim-1-and-ngal-as-early-indicators-for-assessment-of-gentamycin-induced-nephrotoxicity-in-vivo-and-in-vitro
#3
Qi-Hui Luo, Meng-Lu Chen, Zheng-Li Chen, Chao Huang, An-Chun Cheng, Jing Fang, Li Tang, Yi Geng
BACKGROUND/AIMS: The aminolycoside Gentamicin is a widely used antibiotic, applied in equine medicine. Despite its clinical use, concerns remain regarding the potential toxic side-effects, such as nephrotoxicity. Early detection of renal damage is critical in preclinical drug development. This study was aimed to determine whether kidney injury molecule-1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL) may be early indicators in the assessment of Gentamycin-induced nephrotoxicity...
November 28, 2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27888128/neutrophil-gelatinase-associated-lipocalin-production-negatively-correlates-with-hk-2-cell-impairment-evaluation-of-ngal-as-a-marker-of-toxicity-in-hk-2-cells
#4
Martina Hauschke, Erika Roušarová, Pavel Flídr, Jan Čapek, Antonín Libra, Tomáš Roušar
Neutrophil gelatinase-associated lipocalin is an extracellular protein produced mostly in kidney. Recently, it has become a promising biomarker of renal damage in vivo. On the other hand, the validation of NGAL as a biomarker for nephrotoxicity estimation in vitro has not been characterized in detail yet. Since the HK-2 cells are frequently used human kidney cell line, we aimed to characterize the production of NGAL in these cells and to evaluate NGAL as a possible marker of cell impairment. We used heavy metals (mercury, cadmium), peroxide, drugs (acetaminophen, gentamicin) and cisplatin to mimic nephrotoxicity...
November 22, 2016: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/27885823/novel-functionalization-strategies-of-polymeric-nanoparticles-as-carriers-for-brain-medications
#5
Corinne Portioli, Michele Bovi, Donatella Benati, Marta Donini, Massimiliano Perduca, Alessandro Romeo, Stefano Dusi, Hugo L Monaco, Marina Bentivoglio
For targeted brain delivery, nanoparticles (NPs) should bypass the blood-brain barrier (BBB). Novel functionalization strategies, based on low-density lipoprotein receptor (LDLR) binding domain, have been here tested to increase the brain targeting efficacy of poly d,l-lactic-co-glycolic acid (PLGA) NPs, biodegradable and suited for biomedical applications. Custom-made PLGA NPs were functionalized with an apolipoprotein E modified peptide (pep-apoE) responsible for LDLR binding, or with lipocalin-type prostaglandin-d-synthase (L-PGDS), highly expressed in the brain...
November 5, 2016: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/27882134/expression-of-neutrophil-gelatinase-associated-lipocalin-in-low-osmolar-contrast-induced-nephropathy-in-rats-and-the-effect-of-n-acetylcysteine
#6
Wen-Hua Li, Lin Wang, Hai-Yan He, Jing Chen, Ya-Ren Yu
Serum creatinine (Scr), which is a conventional indicator of contrast-induced nephropathy (CIN), is unable to reflect the damage of kidney promptly. The present study aimed to investigate the value of neutrophil gelatinase-associated lipocalin (NGAL) in kidney and serum of CIN rats to observe whether NGAL can be used as a superior indicator of CIN. Furthermore, N-acetylcysteine (NAC) was used to assess its effect on CIN. A total of 120 adult male Sprague Dawley rats were randomly divided into four groups (n=30/group): CIN rats (CIN), normal rats treated with NAC (NAC), CIN rats treated with NAC (NAC+CIN) and the control group (CON)...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881401/alterations-of-colonic-function-in-the-winnie-mouse-model-of-spontaneous-chronic-colitis
#7
Ainsley M Robinson, Ahmed A Rahman, Simona Elisa Carbone, Sarron Randall-Demllo, Rhiannon Filippone, Joel Charles Bornstein, Rajaraman Eri, Kulmira Nurgali
The Winnie mouse, carrying a missense mutation in Muc2, is a model for chronic intestinal inflammation demonstrating symptoms closely resembling inflammatory bowel disease (IBD). Alterations to the immune environment, morphological structure and innervation of Winnie mouse colon have been identified; however analyses of intestinal transit and colonic functions have not been conducted. In this study, we investigated in vivo intestinal transit in radiographic studies and in vitro motility of the isolated colon in organ bath experiments...
November 23, 2016: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/27862029/creatinine-neutrophil-gelatinase-associated-lipocalin-and-cystatin-c-in-determining-acute-kidney-injury-after-heart-operations-using-cardiopulmonary-bypass
#8
Jurij Matija Kališnik, Eva Hrovat, Alenka Hrastovec, Janez Žibert, Aleš Jerin, Milan Skitek, Giuseppe Santarpino, Tomislav Klokocovnik
Acute kidney injury (AKI) represents frequent complication after cardiac surgery using cardiopulmonary bypass (CPB). In the hope to enhance earlier more reliable characterization of AKI, we tested the utility of neutrophil gelatinase-associated lipocalin (NGAL) and cystatin C (CysC) in addition to standard creatinine for early determination of AKI after cardiac surgery using CPB. Forty-one patients met the inclusion criteria. Arterial blood samples collected after induction of general anesthesia were used as baseline, further sampling occurred at CPB termination, 2 h after CPB, on the first and second day after surgery...
November 8, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27851800/expression-and-function-of-interleukin-1%C3%AE-induced-neutrophil-gelatinase-associated-lipocalin-in-renal-tubular-cells
#9
Tadayoshi Konno, Rei Nakano, Ryo Mamiya, Hisashi Tsuchiya, Taku Kitanaka, Shinichi Namba, Nanako Kitanaka, Ken Okabayashi, Takanori Narita, Hiroshi Sugiya
Acute kidney injury (AKI) is characterized by a sudden loss of renal function. Early recognition of AKI, especially in critically ill patients, is essential for adequate therapy. Currently, neutrophil gelatinase-associated lipocalin (NGAL) is considered to be an effective biomarker of AKI; however, the regulation of its expression and function in renal tubular cells remains unclear. In this study, we investigated the regulation of the expression and function of NGAL in IL-1β-treated Madin-Darby canine kidney (MDCK) cells as a model of renal tubular cells...
2016: PloS One
https://www.readbyqxmd.com/read/27846146/identification-and-validation-of-novel-subtype-specific-protein-biomarkers-in-pancreatic-ductal-adenocarcinoma
#10
Laura Kuhlmann, Wiebke M Nadler, Alexander Kerner, Sabrina A Hanke, Elisa M Noll, Christian Eisen, Elisa Espinet, Vanessa Vogel, Andreas Trumpp, Martin R Sprick, Christoph P Roesli
OBJECTIVES: Pancreatic ductal adenocarcinoma (PDAC) has been subclassified into 3 molecular subtypes: classical, quasi-mesenchymal, and exocrine-like. These subtypes exhibit differences in patient survival and drug resistance to conventional therapies. The aim of the current study is to identify novel subtype-specific protein biomarkers facilitating subtype stratification of patients with PDAC and novel therapy development. METHODS: A set of 12 human patient-derived primary cell lines was used as a starting material for an advanced label-free proteomics approach leading to the identification of novel cell surface and secreted biomarkers...
November 11, 2016: Pancreas
https://www.readbyqxmd.com/read/27837177/protection-of-resveratrol-on-acute-kidney-injury-in-septic-rats
#11
Y Gan, S Tao, D Cao, H Xie, Q Zeng
AIM: The aim of the study is to investigate protective effect of resveratrol (Res) on acute kidney injury (AKI) in sepsis. METHODS: Rats in sham group received sham operation; in sham + Res received sham operation and Res (3 mg/kg); in cecal ligation and puncture (CLP) established as sepsis; in CLP + Res (3 mg/kg) with sepsis and Res (3 mg/kg); and in CLP + Res (10 mg/kg) with sepsis and Res (10 mg/kg). Survival rate, serum indexes, inflammatory factors, NF-κB-P65, and SIRT1 were detected...
November 11, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27836924/spleen-contributes-significantly-to-increased-circulating-levels-of-fibroblast-growth-factor23-in-response-to-lipopolysaccharide-induced-inflammation
#12
Shweta Bansal, William E Friedrichs, Chakradhar Velagapudi, Denis Feliers, Khaled Khazim, Diane Horn, John E Cornell, Sherry L Werner, Paolo Fanti
BACKGROUND: Circulating levels of fibroblast growth factor 23 (FGF23) increase progressively and correlate with systemic inflammation in chronic kidney disease (CKD). The aim of this study was to identify and characterize the causal relationship between FGF23 and inflammation in CKD. METHODS: Circulating FGF23 and inflammatory cytokines were correlated in healthy subjects and patients with varying levels of CKD. In addition, FGF23 expression in blood and solid organs was measured in normal mice that were exposed acutely (one time) or chronically (2-week) to low-dose lipopolysaccharide (LPS); chronic exposure being either sustained (subcutaneous pellets), intermittent (daily injections) or combined sustained plus acute (subcutaneous pellets plus acute injection on the day of sacrifice)...
November 10, 2016: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/27827363/control-of-diabetic-hyperglycaemia-and-insulin-resistance-through-tsc22d4
#13
Bilgen Ekim Üstünel, Kilian Friedrich, Adriano Maida, Xiaoyue Wang, Anja Krones-Herzig, Oksana Seibert, Anke Sommerfeld, Allan Jones, Tjeerd P Sijmonsma, Carsten Sticht, Norbert Gretz, Thomas Fleming, Peter P Nawroth, Wolfgang Stremmel, Adam J Rose, Mauricio Berriel-Diaz, Matthias Blüher, Stephan Herzig
Obesity-related insulin resistance represents the core component of the metabolic syndrome, promoting glucose intolerance, pancreatic beta cell failure and type 2 diabetes. Efficient and safe insulin sensitization and glucose control remain critical therapeutic aims to prevent diabetic late complications Here, we identify transforming growth factor beta-like stimulated clone (TSC) 22 D4 as a molecular determinant of insulin signalling and glucose handling. Hepatic TSC22D4 inhibition both prevents and reverses hyperglycaemia, glucose intolerance and insulin resistance in diabetes mouse models...
November 9, 2016: Nature Communications
https://www.readbyqxmd.com/read/27825668/siderophores-in-iron-metabolism-from-mechanism-to-therapy-potential
#14
REVIEW
Briana R Wilson, Alexander R Bogdan, Masaki Miyazawa, Kazunori Hashimoto, Yoshiaki Tsuji
Iron is an essential nutrient for life. During infection, a fierce battle of iron acquisition occurs between the host and bacterial pathogens. Bacteria acquire iron by secreting siderophores, small ferric iron-binding molecules. In response, host immune cells secrete lipocalin 2 (also known as siderocalin), a siderophore-binding protein, to prevent bacterial reuptake of iron-loaded siderophores. To counter this threat, some bacteria can produce lipocalin 2-resistant siderophores. This review discusses the recently described molecular mechanisms of siderophore iron trafficking between host and bacteria, highlighting the therapeutic potential of exploiting pathogen siderophore machinery for the treatment of antibiotic-resistant bacterial infections...
December 2016: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/27825391/oestrous-cycle-dependent-equine-uterine-immune-response-to-induced-infectious-endometritis
#15
Christina D Marth, Simon M Firestone, Lisa Y Glenton, Glenn F Browning, Neil D Young, Natali Krekeler
Infectious endometritis is a major cause of reduced pregnancy rates in horses. The objectives of this study were to establish a timeline of the innate immune response in the uterus of healthy horses and to investigate the oestrous cycle effect on this. Endometrial biopsies were collected from five horses before and at 3, 12, 24, 48 and 72 h after inoculation of Escherichia coli, once in oestrus and once in dioestrus. They were analysed by quantitative real-time PCR, microbiology and histology. Neutrophil numbers increased from very low levels in the absence of inflammation to severe neutrophilia 3 h after inoculation...
November 8, 2016: Veterinary Research
https://www.readbyqxmd.com/read/27814282/nephroprotective-effects-of-remote-ischemic-preconditioning-in-coronary-angiography
#16
Naufal Zagidullin, Alina Dunayeva, Alexander Gilmanov, Shamil Zagidullin, Valentin Pavlov
BACKGROUND: Contrast-induced nephropathy (CIN) is a formidable side effect of iodinated contrast medium use in subjects undergoing coronary angiogram (CAG). Remote ischemic preconditioning (RIPC) may reduce the risk of CIN. AIM: The aim of the study was to investigate the nephroprotective effects of RIPC in coronary heart disease (CHD) in patients, undergoing CAG, with mild to moderate lowered estimated glomerular filtration rate (eGFR). MATERIALS: In the randomized, blinded, sham RIPC (sRIPC) controlled study 51 patients with CHD and GFR less than 80 mL/min/m2, undergoing CAG, were investigated...
November 4, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27814274/urinary-ngal-for-the-diagnosis-of-the-renal-injury-from-multiple-myeloma
#17
Wenhan Du, Ting Shen, Hui Li, Yingying Liu, Lagu He, Li Tan, Min Hu
OBJECTIVES: Neutrophil gelatinase-associated lipocalin (NGAL) has been proved as a sensitive biomarker in acute and chronic renal injury. Renal impairment is a common complication of multiple myeloma (MM). We attempt to assess the value of NGAL for the early and accurate diagnosis of renal injury in MM patients. METHODOLOGY: Forty-five MM patients with CKD stage I to V(MM-renal group), 20 MM patients with normal kidney function (MM-non-renal group), and 37 healthy volunteers (healthy control) were compared for serum and urinary NGAL and other renal injury biomarkers (Creatinine[CRE]; Cystatin-C [CysC]; N-acetyl-beta-D-glucosaminidase [NAG])...
October 28, 2016: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/27800610/lipocalin-2-ngal-attenuates-autophagy-to-exacerbate-cardiac-apoptosis-induced-by-myocardial-ischemia
#18
Hye Kyoung Sung, Yee Kwan Chan, Meng Han, James Won Suk Jahng, Erfei Song, Danielson Eric, Thorsten Berger, Tak W Mak, Gary Sweeney
Lipocalin-2 (Lcn2; also termed neutrophil gelatinase-associated lipocalin (NGAL)) levels correlate positively with heart failure (HF) yet mechanisms via which Lcn2 contributes to the pathogenesis of HF remian unclear. In this study we used coronary artery ligation surgery to induce ischemia in wild type (wt) mice and this induced a significant increase in myocardial Lcn2. We then compared wt and Lcn2 knockout (KO) mice and observed that wt mice showed greater ischemia-induced caspase-3 activation and DNA damage measured by TUNEL than Lcn2KO mice...
November 1, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27797398/hepatic-chemerin-mrna-expression-is-reduced-in-human-nonalcoholic-steatohepatitis
#19
Rebekka Pohl, Elisabeth M Haberl, Lisa Rein-Fischboeck, Sebastian Zimny, Maximilian Neumann, Charalampos Aslanidis, Doris Schacherer, Sabrina Krautbauer, Kristina Eisinger, Thomas S Weiss, Christa Buechler
BACKGROUND: Chemerin is associated with insulin resistance and is expressed in the liver. Nonalcoholic fatty liver disease (NAFLD) is related to impaired insulin sensitivity, but studies evaluating hepatic and serum chemerin in NAFLD resulted in discordant data. MATERIALS AND METHODS: Chemerin mRNA was determined in the liver tissue obtained from 33 controls and 76 NAFLD patients. Chemerin serum levels were measured in a different cohort of patients with ultrasound-diagnosed NAFLD and the respective controls...
October 31, 2016: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27796299/disposal-of-iron-by-a-mutant-form-of-lipocalin-2
#20
Jonathan Barasch, Maria Hollmen, Rong Deng, Eldad A Hod, Peter B Rupert, Rebecca J Abergel, Benjamin E Allred, Katherine Xu, Shaun F Darrah, Yared Tekabe, Alan Perlstein, Rebecca Wax, Efrat Bruck, Jacob Stauber, Kaitlyn A Corbin, Charles Buchen, Vesna Slavkovich, Joseph Graziano, Steven L Spitalnik, Guanhu Bao, Roland K Strong, Andong Qiu
Iron overload damages many organs. Unfortunately, therapeutic iron chelators also have undesired toxicity and may deliver iron to microbes. Here we show that a mutant form (K3Cys) of endogenous lipocalin 2 (LCN2) is filtered by the kidney but can bypass sites of megalin-dependent recapture, resulting in urinary excretion. Because K3Cys maintains recognition of its cognate ligand, the iron siderophore enterochelin, this protein can capture and transport iron even in the acidic conditions of urine. Mutant LCN2 strips iron from transferrin and citrate, and delivers it into the urine...
October 31, 2016: Nature Communications
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