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Showing 4 results for Nephropathy
The effects of vitamin-E on oxidative stress and metabolic imbalance induced by acute unilateral ureteral obstruction in anaesthetized rats
Ashtiyani S.c, Moosavi Sms, Hosseinkhani S, Shirazi M,
Volume 66, Issue 9 (12-2008)
Abstract

Background: Obstructive nephropathy has been associated with disorders in metabolism state and oxidative balance of kidney. Stress oxidative play a key role in the pathophysiological processes of renal diseases. The objective of this study was to investigate effects of vitamin-E, as a powerful antioxidant, on renal oxidative stress and metabolism defect induced by 24-hr unilateral ureteral obstruction (UUO).

Methods: Anesthetized male Sprague-Dawley rats (n=10 in each group) were sterilely operated to occlude the left ureter. In UUO+NS, we had a single dose normal saline injection and in UUO+VitE and UUO+OO groups, D-α-tocopherol (50 mg/kg), the main component of vitamin-E, and its vehicle (Olive Oil), respectively, were twicely infused I.P. before and after UUO-induction. There were also sham-operated and control groups. 24-hr after of UUO-induction, both kidneys were removed and stored in -70°C. To determine metabolism condition, the levels of ATP and ADP and to evaluate redox state, the levels of malondialdehyde (MDA) and ferric reducing/antioxidant power (FRAP) of kidneys were assessed.

Results: The comparisons between UUO+NS and sham groups indicated that UUO increased MDA (p<0.001) and ADP (p<0.05), but decreased FRAP, and ATP/ADP ratio in obstructed kidney (all p<0.001). In UUO+VitE group, MDA and FRAP were equal to their levels in sham group, while ATP, ADP and ATP/ADP ratio were not different from those of UUO+NS group in obstructed kidney.

Conclusion: Twenty four hour of UUO caused renal reduction in oxidative metabolism and elevations in reactive oxygen species and administration of vitamin-E, although considerably ameliorated the oxidative stress, could not improve the defected metabolism.


The predictive value of Neutrophil Gelatinase-Associated Lipocalin (NGAL) in early diagnosis of contrast-induced nephropathy upon angioplasthy/ angiography
Pahlavan-Sabbagh Mr, Khatami Smr, Salari-Far M, Boroumand Aa, Davoudi S,
Volume 69, Issue 8 (11-2011)
Abstract

Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background: Neutrophil Gelatinase Associated Lipocalin (NGAL) is a new biomarker which can predict acute kidney injury (AKI) in critically ill patients. Usefulness of NGAL in the early diagnosis of all types of AKI is under question. We hypothesized NGAL is an early predictive biomarker of contrast-induced nephropathy (CIN).
Methods: In this process evaluation study, we enrolled 122 patients (Mean age 59.7±10.8 years) undergoing elective angiography/angioplasty with contrast media during April to September 2009. Serial urine samples were analyzed in a double-blind fashion by NGAL enzyme-linked immunosorbent assay. CIN was defined as a 25% increase in baseline serum creatinine. 
Results : The prevalence of CIN was 30.3%. Significant elevations in urinary NGAL concentrations were noted within 12-h and 24-h after the procedure in patients with CIN. NGAL concentrations after 12 hours was 90.62±105.63 vs. 27.6±45.8 ng/ml in patients with and without CIN, respectively P=0.0001, and 79.78±117.7 vs. 30.92±52.84 ng/ml, 24 hours afterwards P=0.002. Some patients had AKI after five days of exposure rather than the second day (P=0.0001). We found using a cut-off point of 8 ng/ml with a sensitivity, specificity, negative predictive value and area under the ROC curve 94%, 25%, 91% and 0.75 respectively are good for the prediction of CIN in 12-h urinary NGAL and a cut-off point of 5.5 ng/ml with respective values of 97%, 24%, 95% and 0.70 for 24-h urinary NGAL.
Conclusion: Urine NGAL may represent a sensitive early biomarker of acute AKI after angiography/angioplasty. We recommend the routine measurement of NGAL in high risk patients receiving contrast agents.


Evaluation of the results of renal biopsy performed on diabetic patients referred to Imam Khomeini and Golestan Hospitals of Ahwaz, southwest Iran
Shahla Ahmadi Halili , Zahra Soltani, Saeed Hesam, Maryam Khombi Shooshtari ,
Volume 82, Issue 5 (8-2024)
Abstract
Background: Diabetic nephropathy is one of the most important complications of diabetes worldwide. In diabetic patients, although renal biopsies performed with less frequency, it is important because these patients may have glomerular disorders other than diabetic nephropathy. Therefore, in this study, we investigated the results of renal biopsies performed on diabetic patients referred to diabetic clinics in Imam Khomeini and Golestan hospitals in Ahvaz, southwest Iran.
Methods: In this descriptive-cross-sectional study, information related to biopsy samples from 67 patients recognize with diabetes who underwent renal biopsy from August 2103 to September 2018, collected and recorded retrospectively. The presence of diabetic nephropathy and other renal diseases was confirmed by pathological evaluation of all renal biopsy specimens. Then, the data were analyzed by using SPSS 20 software.
Results: The results of this study presented that diabetic nephropathy (67.2%), diabetic nephropathy along with acute tubulointerstitial nephritis (7.5%), acute tubulointerstitial nephritis (6%) and membrane glomerulonephritis (6%) were the most frequent diagnosis in diabetic patients with renal disorder.  Furthermore, in the described cases, class IV (47.9%), III (35.4%) and II (12.5%) and I (4.2%) were the most common classes of nephropathy, respectively. Interestingly, there was no significant association between age, sex, proteinuria and hematuria with the frequency of nephropathy in the patient who underwent renal biopsy. Also, in this study, the frequency of class I and II nephropathy was 100% in patients older than 50 years, while 64.7% of class III was in patients under 50 years of age, which was also statistically significant (P=0.018). On the other hand, in the studied patients, there were not significant different between the frequency of diabetic nephropathy class and proteinuria, azotemia, and hematuria (P>0.05).
Conclusion: According to the obtained results, to reduce the risk of complications and costs, it seems crucial to be more wary in pick out diabetic patients for renal biopsy and to enhance the threshold of renal biopsy in diabetic patients as much as possible.

A comparative study of egfr changes in patients with type 2 diabetes mellitus with and without albuminuria
Nooshin Shirzad, Fateme Ziamanesh, Seyedahmad Seyedalinaghi , Alireza Esteghamati , Mahboobeh Hemmatabadi ,
Volume 83, Issue 3 (6-2025)
Abstract
Background: Patients with type 2 diabetes mellitus (T2DM) are diagnosed with a wide range of renal damage, usually presenting with albuminuria and decreased estimated Glomerular Filtration Rate (eGFR). Some patients have only albuminuria and normal eGFR, while others have normoalbuminuria even in advanced stages of chronic kidney disease. This study investigated and followed the course of diabetic nephropathy in patients with T2DM.
Methods: 1107 patients with T2DM were enrolled in the study. This historical cohort was conducted between the years 2017 and 2022. Patients with confirmed type 2 DM, referred to the diabetes clinic of Vali-Asr Hospital, affiliated with the Tehran University of Medical Science. Complete medical history, blood pressure, and laboratory data were obtained in the first and follow-up visits. Follow-up was every 3 to 6 months for 30 months. Every year, 24-hour urinary albumin was measured, and eGFR was estimated based on the Cockcroft-Gault formula.
Results: Male sex, age, disease duration, weight, systolic blood pressure, 2 hours postprandial (2hpp) glucose, serum triglyceride, and uric acid significantly correlated with albuminuria. At the initiation of the study, the highest eGFR values occurred in microalbuminuric patients, followed by a sharp decrease. No significant correlation was found between eGFR and albuminuria in most patients, and more than half of them with eGFR of less than 60 ml/min/m2 still had normal albuminuria
Conclusion: This study showed that patients with microalbuminuria and normoalbuminuria had the highest eGFR values followed by macroalbuminuria, but patients with normoalbuminuria and microalbuminuria had an initial increase and then a decrease, and the macroalbuminuria group showed the sustained and greatest decrease during the follow-up period. Serial surveillance of both albuminuria and GFR is crucial in T2DM.

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