scholarly journals Discrepancy between mRNA and Protein Expression of Neutrophil Gelatinase-Associated Lipocalin in Bronchial Epithelium Induced by Sulfur Mustard

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Majid Ebrahimi ◽  
Mehryar Habibi Roudkenar ◽  
Abbas Ali Imani Fooladi ◽  
Raheleh Halabian ◽  
Mostafa Ghanei ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Sulfur Mustard ◽  
Bronchial Epithelium ◽  
Chemical Weapon ◽  
Mustard Gas ◽  
Lipocalin 2 ◽  
Rt Pcr ◽  
Cellular Protection ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Neutrophil Gelatinase

Sulfur mustard (SM) is a potent vesicant that has been employed as a chemical weapon in various conflicts during the 20th century. More recently, mustard was used in the Iraq conflict against Iranian troops and civilians. At the present time there are more than 40.000 people suffering from pulmonary lesions special bronchiolitis obliterans (BOs) due to mustard gas. SM increases the endogenous production of reactive oxygen species (ROS). Neutrophil Gelatinase-associated Lipocalin 2 (Lcn2, NGAL) is a member of the lipocalin superfamily for which a variety of functions such as cellular protection against oxidative stress have been reported. Ten normal and Twenty SM-induced COPD patient individuals were studied. Assessment of NGAL expressions in healthy and the patients endobrinchial biopsies were performed by semiquantitative RT-PCR, real-time RT-PCR, and Immunohistochemistry analysis. While Normal control samples expressed same level of mRNA NGAL, expression level of mRNA-NGAL was upregulated about 1.4- to 9.8-folds compared to normal samples. No significant immunoreactivity was revealed in both samples. As we are aware this is the first report of induction of NGAL in patients exposed to SM. NGAL may play an important role in cellular protection against oxidative stress toxicity induced by mustard gas in airway wall of patients.

scholarly journals Spironolactone reduces oxidative stress in living donor kidney transplantation: a randomized controlled trial

2019 ◽  
Vol 317 (3) ◽  
pp. F519-F528 ◽  
Author(s):  
Luis Eduardo Morales-Buenrostro ◽  
Juan Antonio Ortega-Trejo ◽  
Rosalba Pérez-Villalva ◽  
Lluvia A. Marino ◽  
Yvett González-Bobadilla ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heat Shock ◽  
Heat Shock Protein ◽  
Kidney Function ◽  
Living Donor ◽  
Treated Group ◽  
Lipocalin 2 ◽  
Heat Shock Protein 72 ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Neutrophil Gelatinase

Mineralocorticoid receptor antagonism prevents acute kidney injury induced by ischemia-reperfusion in rodent and pig preclinical models. In a pilot study, we showed that spironolactone (25 mg) reduced oxidative stress after 5 days of kidney transplant (KT). In the present study, we investigated the effects of higher doses (50 and 100 mg) of spironolactone on kidney function, tubular injury markers, and oxidative stress in living donor KT recipients. We included KT recipients aged 18 yr or older who received immunosuppression therapy with IL-2 receptor antagonist, mycophenolate mofetil, corticosteroids, and tacrolimus with negative cross-match, and compatible blood group. Patients were randomized to receive placebo ( n = 27), spironolactone (50 mg, n = 25), or spironolactone (100 mg, n = 25). Treatment was given from 3 days before and up to 5 days after KT. Serum creatinine, K+, urine neutrophil gelatinase-associated lipocalin-2, heat shock protein 72, and 8-hydroxy-2-deoxyguanosine levels were assessed. As expected, kidney function was improved after KT. Serum K+ remained in the normal range along the study. There was no significant effect of spironolactone on urinary neutrophil gelatinase-associated lipocalin-2 levels, whereas the increase in urinary heat shock protein 72 levels tended to be less intense in the 100 mg spironolactone-treated group ( P = 0.054). In the placebo-treated group, urinary 8-hydroxylated-guanosine levels increased on days 3 and 5 after transplantation. This effect was prevented in patients that received spironolactone. In conclusion, spironolactone reduces the acute increase in urinary oxidative stress in living donor KT recipients.

scholarly journals Comparative and Combinatorial Effects of Resveratrol and Sacubitril/Valsartan alongside Valsartan on Cardiac Remodeling and Dysfunction in MI-Induced Rats

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 5006
Author(s):  
Pema Raj ◽  
Karen Sayfee ◽  
Mihir Parikh ◽  
Liping Yu ◽  
Jeffrey Wigle ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cardiac Remodeling ◽  
Left Ventricular ◽  
Myocardial Tissue ◽  
Additive Effects ◽  
Sprague Dawley ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Sprague Dawley Rats ◽  
And Function ◽  
Neutrophil Gelatinase

The development and progression of heart failure (HF) due to myocardial infarction (MI) is a major concern even with current optimal therapy. Resveratrol is a plant polyphenol with cardioprotective properties. Sacubitril/valsartan is known to be beneficial in chronic HF patients. In this study, we investigated the comparative and combinatorial benefits of resveratrol with sacubitril/valsartan alongside an active comparator valsartan in MI-induced male Sprague Dawley rats. MI-induced and sham-operated animals received vehicle, resveratrol, sacubitril/valsartan, valsartan alone or sacubitril/valsartan + resveratrol for 8 weeks. Echocardiography was performed at the endpoint to assess cardiac structure and function. Cardiac oxidative stress, inflammation, fibrosis, brain natriuretic peptide (BNP), creatinine and neutrophil gelatinase associated lipocalin were measured. Treatment with resveratrol, sacubitril/valsartan, valsartan and sacubitril/valsartan + resveratrol significantly prevented left ventricular (LV) dilatation and improved LV ejection fraction in MI-induced rats. All treatments also significantly reduced myocardial tissue oxidative stress, inflammation and fibrosis, as well as BNP. Treatment with the combination of sacubitril/valsartan and resveratrol did not show additive effects. In conclusion, resveratrol, sacubitril/valsartan, and valsartan significantly prevented cardiac remodeling and dysfunction in MI-induced rats. The reduction in cardiac remodeling and dysfunction in MI-induced rats was mediated by a reduction in cardiac oxidative stress, inflammation and fibrosis.

STUDY OF SERUM NEUTROPHIL GELATINASE ASSOCIATED LIPOCALIN CONCENTERATIONS AS A MARKER OF RENAL FUNCTION IN CHRONIC KIDNEY DISEASE PATIENTS

2021 ◽  
pp. 189-190
Author(s):  
G.G. Kaushik ◽  
Shubham Maheshwari ◽  
Ankita Sharma
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Serum Creatinine ◽  
Kidney Function ◽  
Cystatin C ◽  
Kidney Injury ◽  
Lipocalin 2 ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Neutrophil Gelatinase ◽  
Sensitive Marker

Introduction: Serum lipocalin 2 serve as a marker for kidney function. Lipocalin 2 is found in both CKD and kidney injury and it rises in acute kidney injury (AKI) and in patients have faster decline in kidney function. Aims And Objectives: To nd out correlation and assess of serum Neutrophil gelatinase-associated lipocalin 2 (NGAL 2) in patients with stages 2 to 4 of Chronic Kidney disease. The aim of the study was NGAL could represent a novel, sensitive marker of kidney function in adult patients with CKD. Material And Methods: Study involved 120 patients divided in Case group (60 patients) attended medical/ urology OPD or admitted in medical/urology ward of CKD2 – CKD4 while control group – age and sex matched healthy individuals/ stage I CKD patients was taken as control. The plasma/ serum were used for serum urea, creatinine, Cystatin C and lipocalin 2 under all aseptic precaution on receiving consent. Result:The patients of CKD included in study were having glomerulonephritis (46.7%), pyelonephritis (21.7%), diabetic kidney disease (13.3%), polycystic kidney disease (1.7%) and other causes (16.7%). CKD patients demonstrated elevated serum NGAL 159.14 ± 48.73 ng/ml, together with a rise in urea 59.9 ± 17.6 mg/dL, serum creatinine 1.56 ± 0.97 mg/dL and Cystatin C 199 ± 113 ng/ml as compared to control have serum NGAL 76.31 ± 26.34 ng/ml, urea 22.3 ± 5.7 mg/dL, serum creatinine 0.75 ± 0.14 mg/dL and Cystatin C 76 ± 17 ng/ml (P value <0.05). Conclusion: Serum NGAL closely correlates with serum Cystatin C, creatinine, and eGFR, and serve as a potential early and sensitive marker of impaired kidney function/ kidney injury.

scholarly journals Protective Effect of Liposome-Encapsulated Glutathione in a Human Epidermal Model Exposed to a Mustard Gas Analog

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Victor Paromov ◽  
Sudha Kumari ◽  
Marianne Brannon ◽  
Naga S. Kanaparthy ◽  
Hongsong Yang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Protective Effect ◽  
Cell Viability ◽  
Sulfur Mustard ◽  
Alkylating Agents ◽  
Water Soluble ◽  
Model Systems ◽  
Mustard Gas

Sulfur mustard or mustard gas (HD) and its monofunctional analog, 2-chloroethyl ethyl sulfide (CEES), or “half-mustard gas,” are alkylating agents that induce DNA damage, oxidative stress, and inflammation. HD/CEES are rapidly absorbed in the skin causing extensive injury. We hypothesize that antioxidant liposomes that deliver both water-soluble and lipid-soluble antioxidants protect skin cells from immediate CEES-induced damage via attenuating oxidative stress. Liposomes containing water-soluble antioxidants and/or lipid-soluble antioxidants were evaluated usingin vitromodel systems. Initially, we found that liposomes containing encapsulated glutathione (GSH-liposomes) increased cell viability and attenuated production of reactive oxygen species (ROS) in HaCaT cells exposed to CEES. Next, GSH-liposomes were tested in a human epidermal model, EpiDerm. In the EpiDerm, GSH-liposomes administered simultaneously or 1 hour after CEES exposure (2.5 mM) increased cell viability, inhibited CEES-induced loss of ATP and attenuated changes in cellular morphology, but did not reduce caspase-3 activity. These findings paralleled the previously describedin vivoprotective effect of antioxidant liposomes in the rat lung and established the effectiveness of GSH-liposomes in a human epidermal model. This study provides a rationale for use of antioxidant liposomes against HD toxicity in the skin considering further verification in animal models exposed to HD.

scholarly journals Lipocalin-2 (24p3/Neutrophil Gelatinase-associated Lipocalin (NGAL)) Receptor Is Expressed in Distal Nephron and Mediates Protein Endocytosis

2011 ◽  
Vol 287 (1) ◽  
pp. 159-169 ◽  
Author(s):  
Christian Langelueddecke ◽  
Eleni Roussa ◽  
Robert A. Fenton ◽  
Natascha A. Wolff ◽  
Wing-Kee Lee ◽  
...  
Keyword(s):  
Lipocalin 2 ◽  
Distal Nephron ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Neutrophil Gelatinase

scholarly journals Urinary Excretion of Neutrophil Gelatinase-Associated Lipocalin in Diabetic Rats

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Abraham Said Arellano-Buendía ◽  
Fernando Enrique García-Arroyo ◽  
Magdalena Cristóbal-García ◽  
María Lilia Loredo-Mendoza ◽  
Edilia Tapia-Rodríguez ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Urinary Excretion ◽  
Serum Levels ◽  
Diabetic Rats ◽  
Tubular Damage ◽  
Tubular Dysfunction ◽  
Sod Activity ◽  
Expression Levels ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Neutrophil Gelatinase

Recent studies suggest that tubular damage precedes glomerular damage in the progression of diabetic nephropathy. Therefore, we evaluated oxidative stress and urinary excretion of tubular proteins as markers of tubular dysfunction.Methods.Diabetes was induced in rats by streptozotocin administration (50 mg/kg). Oxidative stress was assessed by measuring the activity of catalase (CAT), glutathione peroxidase (GPx), and superoxide dismutase (SOD); additionally, expression levels of 3-nitrotyrosine (3-NT), 4-hydroxynonenal (4-HNE), and oxidized protein (OP) were quantified. Whole glomerular filtration rate (GFR) was measured. Urinary excretion of neutrophil gelatinase-associated lipocalin (uNGAL), osteopontin (uOPN), and N-acetyl-β-D-glucosaminidase (uNAG) was also determined.Results.Diabetic rats showed an increase in uNGAL excretion 7 days following induction of diabetes. Diuresis, proteinuria, albuminuria, creatinine clearance, and GFR were significantly increased by 30 days after induction. Furthermore, there was an increase in both CAT and SOD activity, in addition to 3-NT, 4-HNE, and OP expression levels. However, GPx activity was lower. Serum levels of NGAL and OPN, as well as excretion levels of uNGAL, uOPN, and uNAG, were increased in diabetics. Tubular damage was observed by 7 days after diabetes induction and was further aggravated by 30 days after induction.Conclusion.The tubular dysfunction evidenced by urinary excretion of NGAL precedes oxidative stress during diabetes.

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