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Objectives: The American College of Gastroenterology's 2016 clinical guidelines for treating lower gastrointestinal (GI) tract bleeding recommends evaluating of nasogastric tube aspiration and the ratio of blood urea nitrogen (BUN) to creatinine to differentiate upper from lower GI bleeds. However, the evidence base to support recommending these 2 diagnostic variables is low. This study aimed to evaluate the diagnostic utility of nasogastric tube aspiration and the BUN-to-creatinine ratio for distinguishing between upper and lower GI bleeding., Material and Methods: We conducted a systematic review of the literature to find studies reporting the diagnostic precision of the BUN-to-creatinine ratio and nasogastric aspiration in patients with GI bleeding without hematemesis., Results: The sensitivity of both methods is low for detecting upper GI bleeding. Both blood in the aspirate and an elevated BUN-to-creatinine ratio significantly increase the probability of finding an upper GI source. The positive likelihood ratio varies from positive 2 to 11. However, the sensitivity of both tests for a diagnosis of upper GI bleeding is very low (negative likelihood ratio of 0.6)., Conclusion: A negative result on either of the 2 diagnostic tests provides little useful information and does not firmly rule out an upper GI bleed. Nasogastric tube aspiration cannot be recommended for distinguishing between upper and lower GI bleeding. If the diagnosis is in doubt, endoscopic exploration of the upper GI tract is necessary.

Background: Serum creatinine values of patients tend to change as a result of the use of different blanks used for creatinine determinations on the Advia 1650. After upgrading the analyzer to the Advia 1800, creatinine values tended to be more reproducible. As part of a quality assurance investigation to test the reproducibilities of creatinine values, we determined serial creatinine values in the sera of 13 patients whose initial values were either in the reference range or elevated (range 0.58-7.8 mg/dl). These values were determined concurrently with serum blood urea nitrogen (BUN) determinations (range 6.0-84.4 mg/dl) as these two analytes are used together in evaluation of renal function., Methods: We determined BUN and creatinine values, using the glutamate dehydrogenase lined enzyme assay system and the Jaffe method, respectively., Results: We find that all values for creatinine on samples stored at 4 °C were reproducible as were the corresponding BUN values, which is revealed by low values for the coefficients of variation (CVs), that is, mean CV of 4.55% for creatinine and 2.52% for BUN. One sample with relatively high CV (10.6%) for creatinine was found to have an initial value of 1.1 mg/dl, in the reference range; but, on repeat determinations, the obtained levels were as high as 1.5 mg/dl, above the reference range. BUN values for this sample remained in the reference range, suggesting that no renal disease was present., Conclusion: We conclude that creatinine and BUN determinations are stable, but occasional spurious creatinine values can occur on the Advia 1800 analyzer., (© 2013 Wiley Periodicals, Inc.)

Background: Sodium butyrate (SB) used to increase oxidative stress was reduced and the glutathione redox pathway was boosted. It inhibits proliferation, induction of differentiation, and induction or repression of gene expression and it has also anti-inflammatory action. This is endorsed for suppression of nephrotic symptoms. Objectives: The present study was carried out to evaluate the nephroprotective activity of SB on gentamicin-induced nephrotoxicity in rats. Materials and Methods: Present research work was designed to estimate pharmacological potential of SB in gentamicin-induced nephrotic disorder. The pharmacological prospective was estimated in gentamicin-induced rats through the oral administration of SB formulation 200 mg/kg and 300 mg/kg BW. Results: The study observed that the SB significantly protects the kidneys from gentamicin-induced nephrotic disorders. Gentamicin 100 mg/kg for 7 days was used for induction of nephrotoxicity in Wistar rats by intraperitoneal administration. The administration of SB was observed to decrease the occurrence of glomerular congestion, vascular congestion, epithelial desquamation, inflammatory cell build-up, and kidney cell necrosis induced by gentamicin. The dose of SB maintained the gentamicin-induced increased creatinine (0.62±0.05), serum urea (18.10±0.79), uric acid (2.10±0.28), and blood urea nitrogen (BUN) (17.56±0.55) levels. This fact is further sustained by the histopathological examinations. Conclusion: Sodium butyrate formulation with antinephrotic activity in maintaining uremic solutes such as urea, uric acid, creatinine, BUN, ketone, urobilinogen, glucose, specific gravity, and urine pH in Wistar rats with gentamicin-induced glomerulonephritis (GN). The SB was administered to the animals at doses of 200 and 300 mg/kg body weight. Pretreatment with the drug showed promising results in maintaining elevated parameters in nephritic rats within a short duration. [ABSTRACT FROM AUTHOR]

Polyethylene terephthalate nanoplastics (PET-NPs) are utilized in the production of medical bionic materials and the packaging of beverages. Betaine is a ubiquitous natural constituent present in organisms such as plants, animals, and microorganisms. So, the current investigation tries to find out if PET-NPs could seriously harm mice's kidneys and whether betaine could have any ameliorative effects. In this study, a total of 40 mice were separated into four groups (ten mice in each): Group I (performed as the control group), Group II (received 1000 mg/kg betaine intraperitoneally), Group III (received 200 mg/kg PET-NPs orally), and Group IV (was given betaine first, and after 1 hour, PET-NPs were given at dosages that were the same as those given to groups II and III, respectively) daily for a month. Serum and kidney samples were collected and processed for biochemical and histological assessments. The current study found that PET-NPs significantly increased blood urea nitrogen (BUN), creatinine, and malondialdehyde levels (MDA), while reducing glutathione (GSH) levels. The histological examination revealed multiple histopathological alterations. The PET-NPs-exposed group demonstrated renal corpuscle hypotrophy, a loss of cellular structure in some proximal convoluted tubules (PCT) and distal convoluted tubules (DCT). The renal medulla exhibits hyalinization, congestion, and degeneration of collecting tubules. Conversely, the pre-administration of betaine results in a decline in BUN, creatinine, and MDA concentrations. Furthermore, there is a rise in GSH levels, and the group pretreated with betaine showed significant improvement in kidney architecture, with the renal cortex showing almost normal architecture and the collecting tubules in the renal medulla slightly improving. In conclusion, betaine showed a promising nephroprotective effect against PET-NP-induced toxicity

Polyethylene terephthalate nanoplastics (PET-NPs) are utilized in the production of medical bionic materials and the packaging of beverages. Betaine is a ubiquitous natural constituent present in organisms such as plants, animals, and microorganisms. So, the current investigation tries to find out if PET-NPs could seriously harm mice's kidneys and whether betaine could have any ameliorative effects. In this study, a total of 40 mice were separated into four groups (ten mice in each): Group I (performed as the control group), Group II (received 1000 mg/kg betaine intraperitoneally), Group III (received 200 mg/kg PET-NPs orally), and Group IV (was given betaine first, and after 1 hour, PET-NPs were given at dosages that were the same as those given to groups II and III, respectively) daily for a month. Serum and kidney samples were collected and processed for biochemical and histological assessments. The current study found that PET-NPs significantly increased blood urea nitrogen (BUN), creatinine, and malondialdehyde levels (MDA), while reducing glutathione (GSH) levels. The histological examination revealed multiple histopathological alterations. The PET-NPs-exposed group demonstrated renal corpuscle hypotrophy, a loss of cellular structure in some proximal convoluted tubules (PCT) and distal convoluted tubules (DCT). The renal medulla exhibits hyalinization, congestion, and degeneration of collecting tubules. Conversely, the pre-administration of betaine results in a decline in BUN, creatinine, and MDA concentrations. Furthermore, there is a rise in GSH levels and the group pretreated with betaine showed significant improvement in kidney architecture, with the renal cortex showing almost normal architecture and the collecting tubules in the renal medulla slightly improving. In conclusion, betaine showed a promising nephroprotective effect against PET-NP-induced toxicity. [ABSTRACT FROM AUTHOR]

Chronic renal failure is the loss of the ability of kidneys to excrete waste products, concentrate urine, electrolytes and fluid balance leading to retention of creatinine, urea and other metabolic waste products in the body. The present study was planned to evaluate and correlate Symmetric Dimethylarginine (SDMA) with the severity of chronic kidney disease (CKD) and with BUN and creatinine in dogs. Twenty four dogs presented at Veterinary Clinical Complex of LLUVAS, Hisar (India), diagnosed to be suffering from renal failure on the basis of history, clinical signs and ultrasonographic findings were included in the study. The dogs were divided into three categories (atypical, mild and severe) based on the duration of presentation of cases after emergence of the clinical signs. Six apparently healthy dogs were taken for comparsion with affected ones. Serum from all the affected and apparently healthy animals was used to evaluate SDMA using ELISA kits, whereas BUN and creatinine were determined using biochemistry autoanalyzer. SDMA was significantly (20-fold) elevated in dogs suffering from renal failure as compared to the control group. Significant (p<0.01) positive correlations of SDMA with BUN and serum creatinine were found in all three categories of dogs indicating that serum SDMA can be a biomarker for detection of CKD earlier than does measurement of serum creatinine in dogs. [ABSTRACT FROM AUTHOR]

Kidneys are critical in the clearance and maintenance of active metabolites. One of the medical properties of Salep is treating bladder and kidney inflammation. Due to the widespread use of Salep in traditional medicine and the food industry, and since the effects of Salep on kidney function have not been studied, the present study aimed to investigate the impact of Salep on kidney function. In this experimental study, 48 male rats were divided randomly into six groups as control, sham, and four experimental groups receiving different doses of Salep intraperitoneally (80, 160, 320, and 640 mg/kg). On day 29, after weighing the animals, blood samples were taken from the heart, and serum blood urea nitrogen (BUN), uric acid, and creatinine were analyzed and compared in different groups. All the animal's kidneys were exposed after dissection, and tissue sections were prepared for histopathological evaluation. From day 28 to 29, rats were kept in metabolic cages to collect urine samples and measure water intake and urine volume. The serum concentration of BUN and uric acid in the groups receiving Salep at all doses decreased non-significantly compared to the control group. Furthermore, a significant reduction was seen in creatinine serum levels in groups receiving 320 and 640 mg/kg of Salep extract (P<0.05). No evidence of damage to renal tissue was observed in this study. In conclusion, Salep could decrease serum BUN, uric acid, and creatinine levels due to its antioxidant properties and had no devastating effect on kidneys. [ABSTRACT FROM AUTHOR]

Abstract Introduction In hospitalized patients with acute renal injury (AKI), acute tubulointerstitial nephritis (AIN) constitutes one of the leading etiologies. The objective of this study was to identify clinical and biochemical variables in patients with AKI associated with kidney biopsy-confirmed AIN. Methods For our prospective study, we recruited hospitalized patients aged 18 years and older who were diagnosed with AKI based on biochemical criteria. Prior to enrollment, each patient was assessed with a complete metabolic panel and a kidney biopsy. Results The study consisted of 42 patients (with a mean age of 45 years) and equal numbers of male and female patients. Diabetes and hypertension were the main comorbidities. Nineteen patients had histological findings consistent with AIN. There was a correlation between histology and the BUN/creatinine ratio (BCR) (r = -0.57, p = 0.001). The optimal Youden point for classifying AIN via a receiver operating characteristic (ROC) curve analysis was a BCR ≤ 12 (AUC = 0.73, p = 0.024). Additionally, in diagnosing AIN, BCR had a sensitivity of 76%, a specificity of 81%, a positive predictive value of 81%, a negative predictive value of 76%, and OR of 14 (95% CI = 2.6 to 75.7, p = 0.021). In the multivariable analysis, BCR was the sole variable associated with AIN. Conclusion A BCR ≤ 12 identifies AIN in patients with AKI. This study is the first to prospectively assess the relationship between renal biopsy results and BCR.

Aim: The instant study’s aim is to investigate the effect that BUN and creatinine values have on a prognosis in geriatric patients that are diagnosed with pulmonary embolism. Material and methods: Our study was planned as a retrospective data review and included patients over the age of 65 with a diagnosis of pulmonary embolism who were admitted applied to Ümraniye Training and Research Hospital between March 1, 2020, and March 1, 2022. Statistical analysis was performed using SPSS version 26.0. Results: The study included 148 patients, and 66.89% of them were women. The mortality rate was 28.38%. Considering the blood gas parameters, there was a statistically significant relationship between PH and low saturation and mortality (p=0.029, p=0.001, respectively). Although creatinine values were higher in non-surviving patients than in surviving patients, it was not statistically significant (p=0.252). Blood urea nitrogen was statistically significantly higher in patients who died (p=0.001). Sodium and potassium values were also not associated with mortality (p=0.991, p=0.886, respectively). Conclusion: The effect of kidney function tests on the prognosis is very important in managing pulmonary embolism. BUN will be more beneficial to the clinician than creatinine and plasma electrolytes in the management of patients with pulmonary embolism.

Whether renal health biomarkers can benefit from resveratrol supplements is unknown. Thus, we conducted a systematic review and meta-analysis to summarize evidence from randomized controlled trials investigating the effect of resveratrol supplementation on renal health biomarkers. We hypothesized that resveratrol supplementation is associated with improved renal health biomarkers. Four electronic databases, including PubMed, Scopus, and Institute for Scientific Information Web of Science, and Cochrane Central, were searched for relevant articles up to February 2023. The pooled effect sizes were estimated using a random effects model and expressed as weighted mean difference (WMD) and 95% CI. In total, 32 articles were eligible for inclusion in the current meta-analysis. The pooled results indicated that resveratrol significantly decreased blood urea nitrogen (weighted mean difference [WMD]= –0.84 mg/dL; 95% CI, –1.48 to –0.20; P =.01; I 2 = 64.4%) and creatinine levels (WMD = –1.90 µmol/L; 95% CI, –3.59 to –0.21; P =.03; I 2= 52.1%), and increased glomerular filtration rate (WMD = 7.58 mL/min/1.73 m2; 95% CI, 5.25–9.91; P <.001; I 2 = 0%). The favorable change of blood urea nitrogen was significant in studies with short follow-up duration (12 weeks or less), with lower doses of resveratrol (less than 500 mg/d), and those conducted in patients with diabetes. However, higher doses of resveratrol are needed to observe significant reductions in creatinine. No significant change was observed in albumin, total protein, and uric acid concentrations. This meta-analysis provides a low certainty of evidence indicating a mild renal protective effect of resveratrol in adults. Further high-quality evidence in patients with impaired renal function and estimates of mortality risk in these patients is required before resveratrol can be advocated as an adjuvant therapy. This current meta-analysis of 32 RCTs disclosed that resveratrol supplementation significantly decreased BUN and creatinine levels and increased GFR. However, no significant change was observed in albumin, total protein, and uric acid concentrations. The resveratrol supplementation may have a potential renal protective effect in adults, by improving BUN, creatinine, and GFR levels. BUN, blood urea nitrogen; GFR, glomerular filtration rate; RCT, randomized controlled trial. [Display omitted] [ABSTRACT FROM AUTHOR]

Acute kidney injury is associated with increased risk of heart failure and mortality. This study demonstrates that acute kidney injury induces remote cardiac dysfunction, damage, injury, and fibrosis via a galectin-3 (Gal-3) dependent pathway. Gal-3 originates from bone marrow-derived immune cells. Cardiac damage could be prevented by blocking this pathway.

Acute kidney injury is associated with increased risk of heart failure and mortality. This study demonstrates that acute kidney injury induces remote cardiac dysfunction, damage, injury, and fibrosis via a galectin-3 (Gal-3) dependent pathway. Gal-3 originates from bone marrow-derived immune cells. Cardiac damage could be prevented by blocking this pathway.

Introduction: In hospitalized patients with acute renal injury (AKI), acute tubulointerstitial nephritis (AIN) constitutes one of the leading etiologies. The objective of this study was to identify clinical and biochemical variables in patients with AKI associated with kidney biopsy-confirmed AIN. Methods: For our prospective study, we recruited hospitalized patients aged 18 years and older who were diagnosed with AKI based on biochemical criteria. Prior to enrollment, each patient was assessed with a complete metabolic panel and a kidney biopsy. Results: The study consisted of 42 patients (with a mean age of 45 years) and equal numbers of male and female patients. Diabetes and hypertension were the main comorbidities. Nineteen patients had histological findings consistent with AIN. There was a correlation between histology and the BUN/creatinine ratio (BCR) (r = -0.57, p = 0.001). The optimal Youden point for classifying AIN via a receiver operating characteristic (ROC) curve analysis was a BCR ≤ 12 (AUC = 0.73, p = 0.024). Additionally, in diagnosing AIN, BCR had a sensitivity of 76%, a specificity of 81%, a positive predictive value of 81%, a negative predictive value of 76%, and OR of 14 (95% CI = 2.6 to 75.7, p = 0.021). In the multivariable analysis, BCR was the sole variable associated with AIN. Conclusion: A BCR ≤ 12 identifies AIN in patients with AKI. This study is the first to prospectively assess the relationship between renal biopsy results and BCR. [ABSTRACT FROM AUTHOR]

Background: There are many methods used to estimate renal function in routine clinical practice. Good correlation between glomerular filtration rate (GFR) by Tc-99m DTPA renal scan and inulin clearance is the gold standard method of determining GFR. Objective: The aim of the present study was to evaluate renal function by GFR by Tc-99m DTPA renography and compare it between serum creatinine (Cr), serum blood urea nitrogen (BUN), estimated GFR (eGFR) by Chronic Kidney Disease Epidemiology Collaboration equation (CKDEPI equation), and 24-hour urine creatinine clearance in Thai living related kidney donors. The secondary aim was to investigate whether age or body mass index (BMI) would have a significant effect to the evaluation of GFR from Tc-99m DTPA renography. Materials and Methods: The present study was a retrospective study that included potential living kidney donors who underwent Tc-99m DTPA renal scan and renogram at Siriraj Hospital (Bangkok, Thailand) to evaluate renal function between January 2011 and January 2018. All included patients had complete GFR data from Tc-99m DTPA renography, serum Cr, serum BUN, eGFR by CKD-EPI equation, and 24-hour urine creatinine clearance. Age, gender, and BMI data were also collected. Results: One hundred twenty cases were included. There were 72 females and 48 males, and the mean age was 36.72±10.22 years with a range of 19 to 58 years. Significant correlation was observed between GFR from Tc-99m DTPA renography and serum Cr, serum BUN, eGFR by CKD-EPI equation, and 24-hour urine creatinine clearance. In contrast, gender and BMI revealed no significance with GFR from Tc-99m DTPA renography. Significant negative correlation was found between GFR from Tc-99m DTPA renography and age. Conclusion: The results of the present study revealed that serum Cr, serum BUN, eGFR by CKD-EPI equation, and 24-hour urine creatinine clearance were reliable methods for evaluating GFR. Older age significantly correlated with reduction of the GFR value from Tc-99m DTPA renography. [ABSTRACT FROM AUTHOR]

BackgroundAlthough previous studies observed the relationship between individual dietary supplements and enhancing body resistance against viruses, few studies have been conducted regarding the role of different supplements in treatment of COVID-19. This article aims to determine the association of recent and long-term supplement consumption on the biochemical indices and impatient duration among patients with COVID-19.MethodsIn this cross-sectional study on 300 adult men and women with COVID-19, recent and long-term supplement intakes were investigated by using a questionnaire. In addition, lifestyle was also assessed in aspects of fruits and vegetable consumption, physical activity, sleeping duration, fluid intake, and smoking status. Furthermore, the laboratory and paraclinical parameters were obtained from medical records. The relationship between supplement intake with the length of hospitalization and clinical laboratory tests was investigated by one-way analysis of variance (ANOVA).ResultsThose patients with supplement intake in the last 2 months had a significantly lower amount of blood urea nitrogen (BUN) (31.31 ± 13.87 vs. 37.57 ± 19.77 mg/dL, P: 0.002) and higher serum 25(OH)D (28.13 ± 14.09 vs. 23.81 ± 13.55 ng/mL, P: 0.03). Subjects with long-term supplement intake had a significantly lower invasive oxygen support (0.00 vs 5.10 %, P: 0.05), lactate dehydrogenase (LDH) (498.11 ± 221.43 vs. 576.21 ± 239.84 U/L, P: 0.02), fewer days of fever (0.49 ± 3.54 vs. 2.64 ± 9.21, P: 0.02), and higher serum 25(OH)D (31.03 ± 13.20 vs. 22.29± 13.42 ng/mL, P < 0.001). The length of hospital stay was practically the same between groups who received and did not receive supplementation during the 2 months prior to hospitalization (6.36 ± 3.32 vs. 6.71 ± 4.33 days, P: 0.004). Similarly, people who took supplements during the past year had practically similar hospitalization lengths (6.29 ± 4.13 vs. 6.74 ± 3.55 days, P: 0.004).ConclusionIn conclusion, although practically the length of hospital stay was the same in both groups of supplement consumers and others, immune-boosting supplements were associated with improved several laboratory indices. However, due to the cross-sectional nature of our study, further longitudinal studies seem to be essential.

Background: Serum creatinine and blood urea nitrogen (BUN) are the common markers of renal function and also one of the known predictors of adverse outcomes of acute coronary syndrome (ACS). The aim of this study is to assess the impact of elevated BUN on in-hospital outcome of ACS patients and superiority of BUN over creatinine for the assessment of in-hospital outcome in our setting. Methods: This prospective observational study with purposive sampling of a total of 184 patients was conducted from October, 2009 to September, 2010. Based on normal cut off values (BUN and serum creatinine was <20 mg/dl and <1.4 mg/dl respectively) all the patients were divided into four groups; group I- both BUN and serum creatinine are normal, group-II- normal BUN and high serum creatinine, group-III- high BUN and normal serum creatinine, group-IV- - both BUN and serum creatinine are high. In-hospital data like hemodynamic conditions, heart failure, arrhythmias, conduction abnormalities, death etc. were noted. Assessment of in-hospital outcome of ACS patients and comparison to elevated serum creatinine and elevated BUN was done. Results: ACS patients with only raised BUN level had more occurrence of cardiogenic shock (p=0.008), left ventricular failure (p=0.020), ventricular Tachycardia (p=0.022), ventricular fibrillation (P=0.037) and complete AV block (p=0.022) than those with only raised serum creatinine. In hospital mortality and hospital stay was also increased in ACS patients with elevated BUN than elevated serum creatinine (p value is 0.022 and 0.007 respectively). Conclusion: Incidence of in-hospital death, cardiogenic shock, left ventricular failure, arrhythmia and duration of hospital stay were significantly (p<0.05) higher in patients who had raised BUN than raised serum creatinine. It is observed that elevated BUN is a better predictor of in-hospital outcome of ACS patients than elevated creatinine. [ABSTRACT FROM AUTHOR]

INTRODUCTION[|]Diabetes Mellitus (DM) is a significant cause of mortality and morbidity and may lead to microvascular and macrovascular complications. This can be prevented through early diagnosis of diabetes and achieving glycemic control. Measurement of the fasting glucose, random glucose, oral glucose tolerance test (OGTT) and HbA1C levels have been adopted in the diagnosis of diabetes. This study has searched for DM diagnosis rate using HbA1C measurements in the inpatient population.[¤]METHODS[|]This retrospective study included all inpatients whose HbA1C levels were measured at the Internal Diseases Clinic of Fatih Sultan Mehmet Training and Research Hospital in 2015. Glucose, blood urea nitrogen (BUN), creatinine, fasting glucose levels, age, gender and primary causes of admission of the patients were recorded. The patients, who had HbA1C value of 6.5 or more, were defined as newly diagnosed DM. Before this study, the patients were included in three groups as patients with a previous diabetes diagnosis, patients with a new diabetes diagnosis and patients with no diabetes diagnosis.[¤]RESULTS[|]Among 1057 patients included in this study, 29.7% had past diabetes diagnosis (Group 1), 7.5% were newly diagnosed diabetes, while 62.8% patients have no diabetes. No statistically significant difference was found concerning age and gender distribution. No significant difference was found between the HbA1C, fasting glucose and random glucose levels of Group 1 and Group 2. BUN levels of the patients in Group 3 were lower than those in Group 1. Creatinine levels of Group 1 were higher than in Group 3. No significant difference was identified concerning the duration of hospital stay and mortality between the groups.[¤]DISCUSSION AND CONCLUSION[|]New DM diagnosis rate was 7.5% among the patients admitted to the internal diseases clinic within a year. Besides, in the high-risk population of inpatients, the routine HbA1C measurement may lead to early diagnosis by increasing the undiagnosed patient rate.[¤]

Background: This study was conducted to evaluate certain hemato-biochemical changes during Xylazine-Ketamine (X-K) and Xylazine-Thiopentone (X-T) anesthesia in dogs. Methods: For this, six dogs of 18 to 25 kg BW were selected and divided into two groups: Group I (X-K) and Group II (X-T). Atropine sulfate @ 0.05 mg/kg BW (IM) was used for premedication in both groups. Dogs in Group I (n=3) were anesthetized with Xylazine HCl @ 1.1 mg/kg BW (IM) and Ketamine HCl @ 5.5 mg/kg BW (IM), whereas Xylazine HCl @ 1.1mg/kg BW (IM) and Thiopentone sodium @ 20 mg/kg BW (IV) were used for anesthesia in Group II (n=3). In both groups, peripheral blood samples were collected from the dogs before induction of anesthetic agents (control) and thereafter on 10, 20, 30, and 40 minutes of post-induction and again after complete recovery from anesthesia to evaluate hematological changes in Total Erythrocyte Count (TEC), Hemoglobin (Hb) and Packed Cell Volume (PCV). In addition, serum biochemical changes in Total Serum Protein (TSP), Blood Urea Nitrogen (BUN), Creatinine, Sodium (Na), Potassium (K), and Chloride (Cl) were also assessed in both groups. Results: TEC, Hb, and PCV were altered significantly (P<0.05) in most of the cases, TSP was decreased significantly (P<0.05) but BUN was increased significantly (P<0.05), and creatinine was also increased in both groups during the experiment. There were mild alterations in Na, K, and Cl values after induction, and found near to the baseline (control) after recovery. Conclusions: These findings ascertained that the anesthetic combinations of X-K and X-T assert some definite hemato-biochemical changes in dogs which should be carefully judged by the veterinarians during surgical interventions to avoid anesthesia-related risks and complications. [ABSTRACT FROM AUTHOR]

Abstract Background & aim: Glaucium flavum is used as an anti-diabetes herb in traditional medicine in the southern regions of Iran. Regarding the widespread secondary complications of diabetes, including nephropathy and hepatopathy. The present study was conducted to compare the effects of glacial auricularis and glibenclamide on the changes in serum levels of blood urea nitrogen, creatinine and total and direct bilirubin in alloxan-induced diabetic rats. Methods: In the present experimental study, 40 adult male Wistar rats were randomly divided into five equal groups: control, diabetic control, diabetic treatment with 250 mg / kg glaucium flavum extract, diabetic treated with mentioned extract with daily dose of 500 mg / kg and diabetic treatment with glibenclamide at daily dose of 5 μg / kg. Groups 2 to 5 received single dose (120 mg / kg) of alloxan. After thirty days, the animals were anesthetized and blood samples were taken from the heart. Creatinine, urea nitrogen, totals and direct bilirubin were measured by enzymatic method. The obtained cultivars were analyzed by one-way ANOVA and Tukey's post-hoc test. Results: A significant differences was seen between the means of 250 treated group and diabetic control group among all four factors (P0.05), this reduction for the drug treated group was limited to creatinine and total bilirubin. Conclusion: It could be concluded that the oral administration of the aqueous extracts may help to improve the activity of liver and kidney cleansing of diabetic rats by using anti-inflammatory properties of its compounds, including glucosin, as well as the anti-oxidant effects of Berberine.

Background: The 2019 novel coronavirus disease (COVID-19) is the greatest public health problem to date as number of COVID-19 patients are dramatically increasing worldwide. Clinical criteria are susceptible to subjective and objective factors, which may lead to an extended time for diagnosing and the possibility of misdiagnosing severe COVID-19. Therefore, it makes sense to find a potential biomarker that could effectively diagnose severe COVID-19. Objective: To study biochemical markers in mild and severe patients of covid-19 infection. Material and Methods: This observational study was conducted in the Department of Biochemistry, Seth G S Medical College and KEM Hospital, a tertiary care hospital of Mumbai. Our study included COVID-19 positive patients diagnosed for COVID-19 based on the results of RT-PCR conducted at our centre. Patients were categorized into 2 groups mild (n-50) and severe (n-50) on the basis of severity of clinical presentation, each between 18-80 yrs. of age. Biochemical parameters were compared between these two groups and various biochemical parameters was evaluated using unpaired t-test. Results: The biochemical markers were compared in group-1 and group-2. Group-2 patients had significantly higher levels of serum LDH (p=0.0001), CRP (p=0.0001), BUN (p= 0.007), serum creatinine (p=0.0001), serum AST (p=0.02) and serum ALT (p=0.02). Conclusion: The biomarkers studied in the present research work, if considered together provide a brief overview on the most frequent laboratory abnormalities encountered in patients with COVID-2019 infection which might be useful in indicating progression from mild to severe disease.

Background: The 2019 novel coronavirus disease (COVID-19) is the greatest public health problem to date as number of COVID-19 patients are dramatically increasing worldwide. Clinical criteria are susceptible to subjective and objective factors, which may lead to an extended time for diagnosing and the possibility of misdiagnosing severe COVID-19. Therefore, it makes sense to find a potential biomarker that could effectively diagnose severe COVID-19. Objective: To study biochemical markers in mild and severe patients of covid-19 infection. Material and Methods: This observational study was conducted in the Department of Biochemistry, Seth G S Medical College and KEM Hospital, a tertiary care hospital of Mumbai. Our study included COVID-19 positive patients diagnosed for COVID-19 based on the results of RT-PCR conducted at our centre. Patients were categorized into 2 groups mild (n-50) and severe (n-50) on the basis of severity of clinical presentation, each between 18-80 yrs. of age. Biochemical parameters were compared between these two groups and various biochemical parameters were evaluated using independent-samples t-test. Results: The biochemical markers were compared in group-1 and group-2. Group-2 patients had significantly higher levels of serum LDH (p=0.0001), CRP (p=0.0001), BUN (p= 0.007), serum creatinine (p=0.0001), serum AST (p=0.02) and serum ALT (p=0.02). Conclusion: The biomarkers studied in the present research work, if considered together provide a brief overview on most frequent laboratory abnormalities encountered in patients with COVID-2019 infection which might be useful in indicating progression from mild to severe disease. [ABSTRACT FROM AUTHOR]

Background Diazinon is a widely used pesticide to eradicate agricultural pests globally with the potential to cause harmful effects on humans by generating free radicals and depleting endogenous antioxidants. Soy flour possesses high antioxidant effect. This study evaluated the nephroprotective effect of soy flour on diazinon-induced nephrotoxicity in rats. Methods An experimental laboratory study was carried out involving 30 male Wistar rats were randomly divided into five groups of 6 rats. The normal control (Kn) and the negative control (K-) groups received normal saline, the treatment groups (K1, K2, K3) received 10%, 15%, and 20% soy flour in distilled water, respectively, on day 1 to day 28. Subsequently, for five days, all groups received diazinon 40 mg/kg, except for the normal control group. Blood urea nitrogen (BUN) and creatinine levels were measured at the end of the study. The Kruskal Wallis test with the post hoc Mann Whitney U test were used to analyze the data. Results Blood urea nitrogen and creatinine levels were lower in all treatment groups (K1, K2, K3) compared to the negative control group (K-), while the K3 level was the lowest (24.28 ± 1.56 mg/dL and 0.93 ± 0.14 mg/dL). There was a significant decrease in BUN and creatinine levels in the experimental rats of the 15% and 20% soy flour groups (K2, K3) compared to the negative control group (K-). Conclusion Administration of soy flour (Glycine max (L.) Merr.) had a nephroprotective effect in preventing increases in BUN and creatinine levels of diazinon-induced nephrotoxic male Wistar rats.

Increased intracranial pressure is a further effect of brain injury due to structural damage and osmotic and water imbalances (edema). Mannitol works in the proximal tubules and mannitol in the absorption of tubular cells by the mechanism of pinocytosis. The fluid transfer will draw fluid into the intracellular, so that the cell will be switched and broke. This phenomenon is referred to as the phenomenon of "Nephrosis Osmotic", in which mannitol administration may occur as a result of accumulation of drugs in the kidneys due to prolonged exposure to mannitol in the kidney and given dosage. The effects of osmotic diuresis occurring plus the dose and duration of mannitol administration are reported to cause renal function disorders (Scr and BUN). The aim of this study was to analyze changes in serum creatinine and BUN in patients with brain injury from before receiving mannitol therapy and during mannitol treatment. From the results of the study the number of patients who met the inclusion criteria, 32 patients. Serum creatinine, the initial average of 0.85±0.17 mg/dl and the last day of the mean SCr 0.74±0.30 mg/dl. While the mean BUN (Blood Urea Nitrogen) was 11.27±2.75 mg/dl and the mean last day was 17.08 mg/dl±8.59 mg/dl. From Serum Creatinine and BUN data it can be concluded that there is no significant change. [ABSTRACT FROM AUTHOR]

The aim of this study was to evaluate the kidney function tests in rats experimentally infected with E. coli with monitoring signs of UTI. Forty female rats were divided into two groups, infected (20 rats) and control (20 rats). The infected group were inoculated intraurethral by 108 suspension of E. coli. The animals were monitored for presence of signs. E. coli urine bacterial demonstration were done at 1 week before infection and 24hrs., 48hrs, 96hrs, 6 days, 12 days and 24 days after infection. Blood samples were collected at zero, 24hrs, 3 days, 6 days, 14 days and 24 days. Blood samples for serum BUN and creatinine were collected. The findings suggested that the E.coli isolation has been continuous 24 days since experimentation started. After 24 hrs. post infection, infected rats were suffering from UTIs sings, including frequent urination, pain on urination, foul smelling, diarrhea, poor appetite, and fever. Also, the current results showed that at zero time, all rats present normal value of serum urea and creatinine, Post-infection with E. coli, A significant increase in BUN and creatinine was shown by the infected group at 24 hours, 3 days, 6 days, 14 days and 24 days, as opposed to the control group. In conclusion, E. coli can induce UTI in rats manifested by increase BUN and Creatinine. [ABSTRACT FROM AUTHOR]

Chromium in the leather tanning industry can have an impact on workers’ health. Kidney disease is often referred to as a side effect from exposure to chromium. Measurement of creatinine and BUN level is a method of examining kidney function. The purpose of this study was to analyze the effect of chromium exposure on creatinine and BUN level in leather tanning workers in small leather industry in Magetan. This type of research is observational with cross sectional design. The sample of the study was 13 exposed worker groups namely chromium operators and 13 unexposed groups namely administrative workers. The results showed that there were differences in the average levels of urine chromium in chromium operators and administrative workers (p-value = 0,000), there were differences in the average creatinine levels in chromium operators and administrative workers (p-value = 0,031), and there were no difference in the average level of BUN in chromium operators and administrative workers (p-value = 0,644). There were no influence of chromium levels in urine on the increase in creatinine levels (p-value = 0,189) and BUN (p-value = 0,854) in tanning workers, with a significance value of p-value> 0,05. The conclusion of this study had that chromium was no effect on creatinine and BUN levels. High levels of urine chromium in tanning workers indicate a health risk that requires control effort. Suggestion given is that the tanners need periodic health examination, keep personal hygiene before and after working as well as using Personal Protective Equipment (PPE). Chromium in the leather tanning industry can have an impact on workers’ health. Kidney disease is often referred to as a side effect from exposure to chromium. Measurement of creatinine and BUN level is a method of examining kidney function. The purpose of this study was to analyze the effect of chromium exposure on creatinine and BUN level in leather tanning workers in small leather industry in Magetan. This type of research is observational with cross sectional design. The sample of the study was 13 exposed worker groups namely chromium operators and 13 unexposed groups namely administrative workers. The results showed that there were differences in the average levels of urine chromium in chromium operators and administrative workers (p-value = 0,000), there were differences in the average creatinine levels in chromium operators and administrative workers (p-value = 0,031), and there were no difference in the average level of BUN in chromium operators and administrative workers (p-value = 0,644). There were no influence of chromium levels in urine on the increase in creatinine levels (p-value = 0,189) and BUN (p-value = 0,854) in tanning workers, with a significance value of p-value> 0,05. The conclusion of this study had that chromium was no effect on creatinine and BUN levels. High levels of urine chromium in tanning workers indicate a health risk that requires control effort. Suggestion given is that the tanners need periodic health examination, keep personal hygiene before and after working as well as using Personal Protective Equipment (PPE). [ABSTRACT FROM AUTHOR]

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Objective(s): Global cerebral ischemia-reperfusion (GCIR) causes disturbances in brain functions as well as other organs such as kidney. Our aim was to evaluate the protective effects of ellagic acid (EA) on certain renal disfunction after GCIR. Materials and Methods: Adult male Wistar rats (n=32, 250-300 g) were used. GCIR was induced by bilateral vertebral and common carotid arteries occlusion (4-VO). Animal groups were: 1) received DMSO/saline (10%) as solvent of EA, 2) solvent + GCIR, 3) EA + GCIR, and 4) EA. Under anesthesia with ketamine/xylazine, GCIR was induced (20 and 30 min respectively) in related groups. EA (100 mg/kg, dissolved in DMSO/saline (10%) or solvent was administered (1.5 ml/kg) orally for 10 consecutive days to the related groups. EEG was recorded from NTS in GCIR treated groups. Results: Our data showed that: a) EEG in GCIR treated groups was flattened. b) GCIR reduced GFR (P

The purpose of this research was to develop anti-cytokine-based treatment using extract of Plectranthus amboinicus applied to gout arthritis (GA) patients. The research was quasi experimental, with a pretest-posttest randomized control group design. The samples were GA patientsin the Outpatient Installation of Internal Medicine in General Hospital Haji,Surabaya. The sample was comprised of 30 respondents. The respondents were divided into a treatment group and a control group. The treatment group was asked to take medicine from the hospital, coupled with Plectranthus amboinicus extract capsules, for 7 days, during which time patients' joint inflammation was observed. The control group was provided with only medication from the hospital, and their joint inflammation was likewise observed. Blood samples were taken before and after treatment, to measure the levels of blood urea nitrogen (BUN) and creatinine, as well as the concentrations of TNF-α; and IL-1β. There was a decrease in BUN and creatinine levels in the control group, but it was not significant, decreasing by 3% and 8%, respectively. The treatment group also showed elevated levels of BUN and creatinine, which also was not significant at 3% and 7%, respectively. There was a decrease in the concentration of TNF-α in the control group by 9% and 22%. The concentration of IL-1β in the control group increased by 18%, whereas,in the treatment group,it decreased by3%; however,the decreases in bothgroups were not significant.

Objective(s):Bradykinin is a part of the kinin-kallikreinsystem which is involved in ischemia-reperfusion injury via B1 and B2 receptors.Noscapine is a non-competitive antagonist of bradykinin receptors. Noscapine has been reported to to be able to protect some organs against ischemia-reperfusion injury but its effect on renal ischemia-reperfusion injury (RIR) in rats is unknown. Therefore, the present study was designed to evaluate the effect of noscapine on renal ischemia-reperfusion injury in rats. Materials and Methods: Twenty four rats were randomly assigned to four groups; sham, RIR control, pre-and post-treatment with noscapine. To induce RIR injury, 20 days after right nephrectomy, animals underwent a midline laparotomy and the renal artery was clamped for 40 min to induce ischemia, and the clamp was then removed to allow reperfusion for 48 hr. Animals received noscapine or vehicle 1 hr before RIR or just prior to reperfusion. At the end of the experiment, animals were killed by cardiac exsanguination. Blood samples were collected to assess blood urea nitrogen (BUN) and creatinine. The kidneys were also removed for histopathlogical and western-blot analysis. Results: Noscapine treatment 1 hr before RIR or just prior to reperfusion protects the renal tissue structure as compared with the control. The expression levels of the studied inflammatory mediators, TNF-α and MCP-1in pretreated-, and treated-noscapine groups decreased as compared with the control group. The levels of BUN and creatinine in pre-, and post-treated noscapine groups were significantly lower than in control animals. Conclusion: Noscapine protects renal tissue structure and function against RIR through down-regulation of the inflammatory mediators.

Objective(s): Global cerebral ischemia-reperfusion (GCIR) causes disturbances in brain functions as well as other organs such as kidney. Our aim was to evaluate the protective effects of ellagic acid (EA) on certain renal disfunction after GCIR. Materials and Methods: Adult male Wistar rats (n=32, 250-300 g) were used. GCIR was induced by bilateral vertebral and common carotid arteries occlusion (4-VO). Animal groups were: 1) received DMSO/saline (10%) as solvent of EA, 2) solvent + GCIR, 3) EA + GCIR, and 4) EA. Under anesthesia with ketamine/xylazine, GCIR was induced (20 and 30 min respectively) in related groups. EA (100 mg/kg, dissolved in DMSO/saline (10%) or solvent was administered (1.5 ml/kg) orally for 10 consecutive days to the related groups. EEG was recorded from NTS in GCIR treated groups. Results: Our data showed that: a) EEG in GCIR treated groups was flattened. b) GCIR reduced GFR (P<0.01) and pretreatment with EA attenuated this reduction. c) BUN was increased by GCIR (P<0.001) and pretreatment with EA improved the BUN to normal level. d) Serum creatinine concentration was elevated by GCIR but not significantly, however, in EA+GCIR group serum creatinine was reduced (P<0.05). e) GCIR induced proteinuria (P<0.05) but, EA was unable to reduced proteinuria. Conclusion: Results indicate that GCIR impairs certain renal functions and EA as an antioxidant can improve these functions. Our results suggest the possible usefulness of ellagic acid in patients with brain stroke. [ABSTRACT FROM AUTHOR]

BackgroundVenoveno bypass (VVB) has been used to achieve hemodynamic stability and decrease the incidence of renal dysfunction. However, VVB has many complications. The purpose of this study is to verify the safety of total clamping of the suprahepatic inferior vena cava (IVC) without VVB during orthotropic liver transplantation (OLT) in terms of anesthetic management.MethodsTwenty-five patients without preoperative renal dysfunction who underwent primary OLT were enrolled in this study. Hemodynamic data and blood gas measurements were collected 1 hour after incision, 30 minutes after IVC total clamping and 30 minutes after reperfusion. Postoperative laboratory data, including blood urea nitrogen (BUN), creatinine (Cr) and glomerular filtration rate (GFR), were assessed at postoperative day (POD) 0-7, 30, 90, 180 and 1 year.ResultsMean blood pressure was well maintained during IVC total clamping with infusion of inotropics. There was no case of severe acidosis (pH < 7.2) during the anhepatic period. The immediate postoperative Cr and GFR were not significantly different from those of the preoperative values. BUN increased from POD 1 and decreased after POD 6, while Cr increased at POD 90 only.ConclusionsIn patients without preoperative renal dysfunction, when IVC was totally clamped, VVB does not need to be routinely performed to maintain hemodynamics during the anhepatic phase and renal function after OLT.

Recent studies show that hydrogen peroxide free radicals have an important role in the renal damage induced by Gentamicin. Previously we studied the hydrogen peroxide scavenging activity of Eryngium caucasicum. This work was conducted to evaluate the possible renoprotective effect of Eryngium caucasicum against Gentamicin-induced renotoxicity. Extracts at the doses 200 and 400 mg/kg/day for 10 consecutive days, by intraperitoneal route (i.p.) offered renoprotective action by change in the blood urea nitrogen (BUN), serum urea and creatinine. Results show that an extract at 400 mg/kg/ day shows better activity than other tested samples. In conclusion, the extracts showed significant renoprotective activity compared with the control group.

To evaluate the correlation of clinical, laboratory, and pathological features at pre-sentation of focal segmental sclerosis (FSGS), we reviewed in a cross sectional study the patholo-gical findings of kidney biopsies in 64 cases of primary FSGS, and correlated them with the clinical and laboratory data obtained at the time of the biopsies. The data included blood pressure, glome-rular filtration rate (GFR), serum albumin, and the level of proteinuria. The mean level of serum crea-tinine was significantly higher in the biopsies′ findings of synechiae (adhesions) in the Bowman′s capsule, interstitial fibrosis, and global scars (P< 0.05), and mean level of GFR was significantly lower with the presence of interstitial fibrosis (P< 0.05). Furthermore, there was a positive correlation between the level of serum creatinine and global sclerosis (r= 2.21, P= 0.04), and a negative correlation between the level of GFR and global sclerosis(r= 2.01, P= 0.02). All the patients with renal insufficiency had interstitial fibrosis in their biopsies in comparison of only the 24 patients (48%) of the group without renal insufficiency (P< 0.05). There was no significant difference bet-ween patients with and without hypertension and nephritic-ranged proteinuria. We conclude that we found a correlation of renal insufficiency in primary FSGS patients with interstitial fibrosis, global scars and the synechiae of Bowman′s capsule in their biopsies.

Foram testadas 120 amostras séricas de cães com títulos (³100) perante Icterohaemorrhagiae para a determinação dos níveis séricos de uréia e de creatinina. Os animais com títulos ³800 apresentaram dosagens de uréia bastante superiores aos valores de referência e os com títulos ³200 e £400 apresentaram valores de uréia significativamente menores (P³800 apresentaram dosagens acima do padrão normal. Observou-se uma clara correlação entre dano renal e a sororreatividade específica para leptospirose.One hundred and twenty serum samples from dogs with specific titres (³100) against Leptospira sp. serovar Icterohaemorrhagiae for the dosage of blood urea nitrogen (BUN) and creatinine levels were tested. Animals presenting titres ³800 showed BUN levels higher than reference values while samples with titres ³200 and £400 presented BUN levels significantly lower (P³800 showed dosages higher than the reference values. A correlation between renal damage and specific seroreactivity for leptospirosis was demonstrated.

Background & Objective: More than 50% of patients with hypertension will have end organ damage (such as: CHF, retinopathy ,CVA or renal failure).Left ventricular hypertrophy (LVH) is an independent risk factor for death and cardiovascular disease .Both renal dysfunction and LVH are signs of end organ damage so we carried out this study to evaluate the correlation between LVH in echocardiography and kidney function in patients with essential hypertension. Materials & Methods: This descriptive analytic study was carried out on 102 patients whome reffered to 5 Azar hospital in Gorgan- Iran, suffering from essential hypertension and had proved LVH in echocardiography with no other disease during 2005-6. Kidney and urinary tract assessment such as serum BUN, Creatinine level and kidney sonography was done on subjects. Left ventricular hypertrophy was defined as a left ventricular mass index (LVMI)>=135g/m2 in men and>=110g/m2 in women. Renal function was estimated by means of the serum Creatinine level and proteinuria and sonographic findings of kidney and urinary tract. Data was analysed by Spss-11.5 and Chi-Squre test. Results: The average age of patients were 60±8.8. 58%, 36% and 7% of patients had mild, moderate and sever LVH respectivly. The means of Creatinine and BUN level were 1.09±1.12 mg/dl and 20.6±10.76 mg/dl had direct correlation with kidney dysfunction (P

Background and Objectives: Regarding to the increasing of zinc oxide-iron-nickel nanoparticles and their applications in the biological systems, it seems that there are less investigations on their side effects in the organisms. In this research the effect of Fe4NiO4Zn nanoparticles on renal function was investigated. Materials and Methods: Twenty four Wistar rat were studied. They were divided into three groups: 1) control group (2,3) treated groups, These groups received. . /5cc of saline, /5cc of solution containing 100, 200 ppm Fe2NiO4 for 7 successive days, respectively. Then renal parameters such as uric acid, creatinine and BUN (blood urea nitrogen) were evaluated at (2,7 and 14 days). Results: Mean uric acid levels, at 7 day after the intervention, were significantly increased in both doses. Also, in group 2 (Fe4NiO4Zn 100 ppm), mean uric acid, levels at 7, 14 day after the intervention were significantly increased. Mean BUN levels showed significant decrease in comparison with control group (at 2-7-14 days) in both doses. In high dose (Fe4NiO4Zn 200 ppm), mean creatinine levels showed significant decrease. Conclusion: Results of this study showed that Fe4NiO4Zn can influence the renal function. The difference in tissue distribution, penetration, and damage of nanoparticles in various studies is probably due to the difference in their synthesis method that leads to the changes in size, shape, and other physical and chemical properties of nanoparticles. It seems that the application of Fe4NiO4Zn nanoparticles in the biological system has no stable and long-term toxic effects on the animal body. Probably the reticuloendothelial system excretes the nanoparticles from the body. [ABSTRACT FROM AUTHOR]

As aflatoxinas, embora principalmente hepatotóxicas, já foram descritas como nefrotóxicas em várias espécies animais. Neste trabalho, a patologia clínica veterinária foi utilizada para avaliar as alterações renais na aflatoxicose experimental em cães. Utilizaram-se quatro grupos de 5 cães, com colheitas diárias de sangue e urina, durante 12 dias consecutivos; nos quais realizaram-se dosagens séricas de uréia, creatinina e proteína total, e urinálise. O experimento foi dividido em três períodos, sendo o período 0 (dias l a 3) referente a colheita de dados para controle, período 1 (dias 4 a 8) considerando o tempo de administração da toxina e período 2 (dias 9 a 12) ao tempo após a intoxicação. As doses de aflatoxina usada foram de 100, 200, 400, e 600mg/kg/dia, respectivamente para os grupos I, II, III, IV, por via oral, misturada ao alimento, pelo período de cinco dias. As taxas de uréia e creatinina variaram dentro do intervalo normal dos valores de referência da literatura consultada. A proteína total e a densidade urinária estiveram próximas ou acima dos valores máximos de referência devido a hemoconcentração. A análise estatística evidenciou uma diminuição progressiva nos valores de uréia, creatinina e densidade urinária, com relação ao aumento da dose usada em cada grupo. Este fato foi atribuído à maior ingestão de água. Através dos resultados obtidos, concluiu-se que as doses aplicadas não foram suficientes para detectar lesão renal.Aflatoxins, although primary hepatotoxic agents, were injurious to kidney in several animal species. Veterinary clinical pathology was used to determine renal changes in canine experimental aflatoxicosis. Four groups of five dogs were used. Blood and urine samples were coilected for the twelve following days. BUN, creatinine, total serun protein and urinalysis were done. The experiment was divided in three periods: period 0 (days 1 to 3) refered to the control data, period 1 (days 4 to 8) to the aflatoxin administration days, and period 2 (days 9 to 12) the days after the poisoning. 100, 200, 400 and 600mg/kg/day of aflatoxin for the I, II, III and IV groups respectively, by oral pathway, mixed to the food, were used for five days. BUN and creatinine were within the normal ranges. Total serun protein and urine specific gravity were near or above upper limits due to hemoconcentration. Statistics showed a diminution of BUN, creatinine and urine specific gravity values according to the increased af latoxin doses applied in each group. This was attributed to an increase of water intake. According to the results of this investigation, the conclusion is that the doses used were not sufficient to determine renal damage.

Objective(s): Bradykinin is a part of the kinin-kallikrein system which is involved in ischemiareperfusion injury via B1 and B2 receptors. Noscapine is a non-competitive antagonist of bradykinin receptors. Noscapine has been reported to to be able to protect some organs against ischemia-reperfusion injury but its effect on renal ischemia-reperfusion injury (RIR) in rats is unknown. Therefore, the present study was designed to evaluate the effect of noscapine on renal ischemia-reperfusion injury in rats. Materials and Methods: Twenty four rats were randomly assigned to four groups; sham, RIR control, pre-and post-treatment with noscapine. To induce RIR injury, 20 days after right nephrectomy, animals underwent a midline laparotomy and the renal artery was clamped for 40 min to induce ischemia, and the clamp was then removed to allow reperfusion for 48 hr. Animals received noscapine or vehicle 1 hr before RIR or just prior to reperfusion. At the end of the experiment, animals were killed by cardiac exsanguination. Blood samples were collected to assess blood urea nitrogen (BUN) and creatinine. The kidneys were also removed for histopathlogical and western-blot analysis. Results: Noscapine treatment 1 hr before RIR or just prior to reperfusion protects the renal tissue structure as compared with the control. The expression levels of the studied inflammatory mediators, TNF-α and MCP-1in pretreated-, and treated-noscapine groups decreased as compared with the control group. The levels of BUN and creatinine in pre-, and post-treated noscapine groups were significantly lower than in control animals. Conclusion: Noscapine protects renal tissue structure and function against RIR through downregulation of the inflammatory mediators. [ABSTRACT FROM AUTHOR]