Ameliorative, Antioxidant and Immunomodulatory Potential of Vitamin D on Aminoglycoside Induced Acute Kidney Injury in Wistar Rats

2021 ◽  
Author(s):  
Neeraj Thakur ◽  
S.K. Shukla ◽  
A.H. Ahmad ◽  
N.S. Jadon ◽  
J.L. Singh ◽  
...  
Keyword(s):  
Vitamin D ◽  
Acute Kidney Injury ◽  
Histopathological Examination ◽  
Kidney Injury ◽  
Serum Biochemistry ◽  
Mean Value ◽  
Tnf Α ◽  
The Mean ◽  
Group B ◽  
Immunomodulatory Potential

Background: Acute kidney injury causes an abrupt decline in renal filtration and affects animals in a similar way to humans. Diagnosis can be made based on urinalysis, serum biochemistry and various biomarkers. The present study was conducted to evaluate the ameliorative, antioxidant and immunomodulatory potential of vitamin D in rats induced with acute kidney injury. Methods: In the present study, group A rats were taken as healthy control, group B rats were given gentamicin @ 100 mg/kg BW intraperitoneally for 8 days and were considered as disease control and group C rats were treated with Vitamin D @ 0.4 µg/kg/day subcutaneously for 8 days along with intraperitoneal gentamicin injection. Reduced glutathione (GSH), lipid peroxide (LPO), catalase and superoxide dismutase (SOD) were estimated in erythrocytes on day 0, 4 and 8. Tumor necrosis factor alpha (TNF α) and interleukin 10 (IL 10) were also estimated along with urine and serum biochemistry on day 0, 4 and 8. Kidney tissue samples were collected on day 8 for histopathological examination. Result: The mean values of GSH, catalase and SOD were significantly (P less than 0.05) higher whereas the mean value of LPO was significantly (P less than 0.05) lower in group C compared to group B on day 4 and 8. On day 4 and 8, the mean value of TNF α was significantly (P less than 0.05) lower, while the mean value of IL-10 was significantly (P less than 0.05) higher in rats treated with vitamin D as compared to disease control. Histopathological examination along with urine and serum biochemistry revealed protective efficacy of vitamin D in acute kidney injury. Based on the findings of the present study, it is concluded that vitamin D is having ameliorative efficacy along with antioxidant and immunomodulatory potential in case of gentamicin induced acute kidney injury in Wistar rats. However, detailed studies are required to explore the therapeutic potential of vitamin D in clinical cases of kidney diseases.

Vitamin D in Acute Kidney Injury

2013 ◽  
Vol 12 (4) ◽  
pp. 262-272 ◽  
Author(s):  
Andrea Braun ◽  
Kenneth Christopher
Keyword(s):  
Vitamin D ◽  
Acute Kidney Injury ◽  
Kidney Injury

scholarly journals Clearance of inflammatory cytokines in patients with septic acute kidney injury during renal replacement therapy using the EMiC2 filter (Clic-AKI study)

Critical Care ◽  
2021 ◽  
Vol 25 (1) ◽  
Author(s):  
Nuttha Lumlertgul ◽  
Anna Hall ◽  
Luigi Camporota ◽  
Siobhan Crichton ◽  
Marlies Ostermann
Keyword(s):  
Acute Kidney Injury ◽  
Growth Factor ◽  
Replacement Therapy ◽  
Kidney Injury ◽  
Final Analysis ◽  
Adsorptive Capacity ◽  
Clearance Rates ◽  
Plasma Cytokine ◽  
Tnf Α ◽  
Ifn Γ

Abstract Background The EMiC2 membrane is a medium cut-off haemofilter (45 kiloDalton). Little is known regarding its efficacy in eliminating medium-sized cytokines in sepsis. This study aimed to explore the effects of continuous veno-venous haemodialysis (CVVHD) using the EMiC2 filter on cytokine clearance. Methods This was a prospective observational study conducted in critically ill patients with sepsis and acute kidney injury requiring kidney replacement therapy. We measured concentrations of 12 cytokines [Interleukin (IL) IL-1β, IL-1α, IL-2, IL-4, IL-6, IL-8, IL-10, interferon (IFN)-γ, tumour necrosis factor (TNF)-α, vascular endothelial growth factor, monocyte chemoattractant protein (MCP)-1, epidermal growth factor (EGF)] in plasma at baseline (T0) and pre- and post-dialyzer at 1, 6, 24, and 48 h after CVVHD initiation and in the effluent fluid at corresponding time points. Outcomes were the effluent and adsorptive clearance rates, mass balances, and changes in serial serum concentrations. Results Twelve patients were included in the final analysis. All cytokines except EGF concentrations declined over 48 h (p < 0.001). The effluent clearance rates were variable and ranged from negligible values for IL-2, IFN-γ, IL-1α, IL-1β, and EGF, to 19.0 ml/min for TNF-α. Negative or minimal adsorption was observed. The effluent and adsorptive clearance rates remained steady over time. The percentage of cytokine removal was low for most cytokines throughout the 48-h period. Conclusion EMiC2-CVVHD achieved modest removal of most cytokines and demonstrated small to no adsorptive capacity despite a decline in plasma cytokine concentrations. This suggests that changes in plasma cytokine concentrations may not be solely influenced by extracorporeal removal. Trial registration: NCT03231748, registered on 27th July 2017.

scholarly journals The effect of nano-hydroxyapatite/chitosan scaffolds on rat calvarial defects for bone regeneration

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Emmanouil Chatzipetros ◽  
Spyros Damaskos ◽  
Konstantinos I. Tosios ◽  
Panos Christopoulos ◽  
Catherine Donta ◽  
...  
Keyword(s):  
Bone Regeneration ◽  
Mean Value ◽  
Parietal Bone ◽  
Female Rats ◽  
Sprague Dawley ◽  
Post Surgery ◽  
Group A ◽  
The Mean ◽  
Group B ◽  
The Right

Abstract Background This study aims at determining the biological effect of 75/25 w/w nano-hydroxyapatite/chitosan (nHAp/CS) scaffolds on bone regeneration, in terms of fraction of bone regeneration (FBR), total number of osteocytes (Ost), and osteocyte cell density (CD), as well as its biodegradability. Methods Two critical-size defects (CSDs) were bilaterally trephined in the parietal bone of 36 adult Sprague-Dawley rats (18 males and 18 females); the left remained empty (group A), while the right CSD was filled with nHAp/CS scaffold (group B). Two female rats died postoperatively. Twelve, 11, and 11 rats were euthanized at 2, 4, and 8 weeks post-surgery, respectively. Subsequently, 34 specimens were resected containing both CSDs. Histological and histomorphometric analyses were performed to determine the FBR, calculated as [the sum of areas of newly formed bone in lateral and central regions of interest (ROIs)]/area of the original defect, as well as the Ost and the CD (Ost/mm2) in each ROI of both groups (A and B). Moreover, biodegradability of the nHAp/CS scaffolds was estimated via the surface area of the biomaterial (BmA) in the 2nd, 4th, and 8th week post-surgery. Results The FBR of group B increased significantly from 2nd to 8th week compared to group A (P = 0.009). Both the mean CD and the mean Ost values of group B increased compared to group A (P = 0.004 and P < 0.05 respectively). Moreover, the mean value of BmA decreased from 2nd to 8th week (P = 0.001). Conclusions Based on histological and histomorphometric results, we support that 75/25 w/w nHAp/CS scaffolds provide an effective space for new bone formation.

α2-Adrenoceptor agonist dexmedetomidine protects septic acute kidney injury through increasing BMP-7 and inhibiting HDAC2 and HDAC5

2012 ◽  
Vol 303 (10) ◽  
pp. F1443-F1453 ◽  
Author(s):  
Chung-Hsi Hsing ◽  
Chiou-Feng Lin ◽  
Edmund So ◽  
Ding-Ping Sun ◽  
Tai-Chi Chen ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Histone Deacetylases ◽  
Trichostatin A ◽  
Histone H3 ◽  
Cecal Ligation ◽  
Kidney Injury ◽  
Protective Effects ◽  
Tnf Α

Bone morphogenetic protein (BMP)-7 protects sepsis-induced acute kidney injury (AKI). Dexmedetomidine (DEX), an α2-adrenoceptor (α2-AR) agonist, has anti-inflammatory effects. We investigated the protective effects of DEX on sepsis-induced AKI and the expression of BMP-7 and histone deacetylases (HDACs). In vitro , the effects of DEX or trichostatin A (TSA, an HDAC inhibitor) on TNF-α, monocyte chemotactic protein (MCP-1), BMP-7, and HDAC mRNA expression in LPS-stimulated rat renal tubular epithelial NRK52E cells, was determined using real-time PCR. In vivo, mice were intraperitoneally injected with DEX (25 μg/kg) or saline immediately and 12 h after cecal ligation and puncture (CLP) surgery. Twenty-four hours after CLP, we examined kidney injury and renal TNF-α, MCP-1, BMP-7, and HDAC expression. Survival was monitored for 120 h. LPS increased HDAC2, HDAC5, TNF-α, and MCP-1 expression, but decreased BMP-7 expression in NRK52E cells. DEX treatment decreased the HDAC2, HDAC5, TNF-α, and MCP-1 expression, but increased BMP-7 and acetyl histone H3 expression, whose effects were blocked by yohimbine, an α2-AR antagonist. With DEX treatment, the LPS-induced TNF-α expression and cell death were attenuated in scRNAi-NRK52E but not BMP-7 RNAi-NRK52E cells. In CLP mice, DEX treatment increased survival and attenuated AKI. The expression of HDAC2, HDAC5, TNF-α, and MCP-1 mRNA in the kidneys of CLP mice was increased, but BMP-7 was decreased. However, DEX treatment reduced those changes. DEX reduces sepsis-induced AKI by decreasing TNF-α and MCP-1 and increasing BMP-7, which is associated with decreasing HDAC2 and HDAC5, as well as increasing acetyl histone H3.

Snake envenomation-induced acute kidney injury: prognosis and long-term renal outcomes

2021 ◽  
pp. postgradmedj-2020-139021
Author(s):  
Manoj Kumar ◽  
Maasila Arcot Thanjan ◽  
Natarajan Gopalakrishnan ◽  
Dhanapriya Jeyachandran ◽  
Dineshkumar Thanigachalam ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Kidney Injury ◽  
Long Term Outcomes ◽  
Urine Protein ◽  
Renal Outcomes ◽  
Snake Envenomation ◽  
The Mean ◽  
New Onset

BackgroundSnake bite continues to be a significant cause of acute kidney injury (AKI) in India. There is paucity of data regarding long-term outcomes of such patients. In this study, we aim to assess the prognosis and long-term renal outcomes of such patients.MethodsWe analysed the hospital records of snake envenomation-induced AKI from January 2015 to December 2018. Predictors of in-hospital mortality were assessed. Survivors were advised to visit follow-up clinic to assess their kidney function.ResultsThere were 769 patients with evidence of envenomation and of them, 159 (20.7%) had AKI. There were 112 (70.4%) males. Mortality occurred in 9.4% of patients. Logistic regression analysis identified shock (OR 51.949, 95% CI 4.297 to 628.072) and thrombocytopenia (OR 27.248, 95% CI 3.276 to 226.609) as predictors of mortality. Forty-three patients attended the follow-up. The mean follow-up duration was 30.4±15.23 months. Adverse renal outcomes (eGFR <60 mL/min/1.73 m2 or new-onset hypertension (HTN) or pre-HTN or urine protein creatinine ratio >0.3) occurred in 48.8% of patients. Older age (mean age (years) 53.3 vs 42.8, p=0.004) and longer duration on dialysis (median duration (days) 11.5 vs 5, p=0.024) were significantly associated with adverse renal outcomes.ConclusionsThe incidence of AKI in snake envenomation was 20.7%. The presence of shock and thrombocytopenia were associated with mortality. Adverse renal outcomes occurred in 48.8% of patients in the long term.

Neutrophil gelatinase associated lipocalin, an early biomarker for diagnosis of acute kidney injury after percutaneous coronary intervention

2017 ◽  
Vol 43 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Nakhshab Choudhry ◽  
Amna Ihsan ◽  
Sadia Mahmood ◽  
Fahim Ul Haq ◽  
Aamir Jamal Gondal
Keyword(s):  
Acute Kidney Injury ◽  
Percutaneous Coronary Intervention ◽  
Serum Creatinine ◽  
Kidney Injury ◽  
Coronary Intervention ◽  
Diagnostic Biomarker ◽  
Elective Percutaneous Coronary Intervention ◽  
Percutaneous Coronary ◽  
Significant Difference ◽  
The Mean

AbstractObjectives:This study was designed to find the reliability of serum NGAL as an early and better diagnostic biomarker than that of serum creatinine for acute kidney injury after percutaneous coronary intervention in Pakistani population.Materials and methods:One hundred and fifty-one patients undergoing elective percutaneous coronary intervention were included and demographic data were recorded. Blood was drawn by venipuncture in clot activator vacutainers and serum was separated and stored at 4°C. Sample was drawn before the percutaneous procedure and subsequently sampling was done serially for 5 days.Results:The mean±SD serum NGAL pre-PCI (39.92± 10.35 μg/L) and 4 h post-PCI (100.42±26.07 μg/L) showed highly significant difference (p<0.001). The mean±SD serum creatinine pre-PCI (70.1±11.8 μmol/L) and post-PCI (71.2±11.6 μmol/L) showed significant difference (p=0.005) on day 2 onwards but mean microalbumin showed insignificant results (p=0.533). The serum NGAL predicted CI-AKI with sensitivity of 95.8% and specificity of 97.6% for a cut off value of 118 μg/L.Conclusion:Our results suggest that NGAL is an excellent early diagnostic biomarker for acute kidney injury in patients undergoing elective percutaneous coronary intervention.

scholarly journals Clinical Characteristics and Outcomes of Adults with Nephrotic Syndrome Due to Minimal Change Disease

2021 ◽  
Vol 10 (16) ◽  
pp. 3632
Author(s):  
Sophia Lionaki ◽  
Evangelos Mantios ◽  
Ioanna Tsoumbou ◽  
Smaragdi Marinaki ◽  
George Makris ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Nephrotic Syndrome ◽  
Minimal Change Disease ◽  
Kidney Injury ◽  
Spontaneous Remission ◽  
Minimal Change ◽  
Adult Onset ◽  
Potential Risk Factors ◽  
The Mean ◽  
End Stage

Purpose: Minimal change disease (MCD) is considered a relatively benign glomerulopathy, as it rarely progresses to end-stage kidney disease. The aim of this study was to describe the characteristics and outcomes of adults with MCD and identify potential risk factors for relapse. Patients & Methods: We retrospectively studied a cohort of adults with biopsy-proven MCD in terms of clinical features and treatment outcomes. Baseline characteristics and outcomes were recorded and predictors of relapse were analyzed using logistic regression multivariate analysis. Results: 59 patients with adult-onset primary MCD with nephrotic syndrome were included. Mean serum creatinine at diagnosis was 0.8 mg/dL (±2.5) and estimated GFR (eGFR) was 87 mL/min/1.73 m2 (±29.5). Mean serum albumin was 2.5 g/dL (±0.8) and 24 h proteinuria 6.8 g (±3.7). Microscopic hematuria was detected in 35 (58.5%) patients. 42 patients received prednisone alone, six patients received prednisone plus cyclophosphamide, five patients received prednisone plus cyclosporine, one patient received prednisone plus rituximab and five patients did not receive immunosuppression at all since they achieved spontaneous remission. During a mean follow up time of 34.7(22.1) months, 46.1% of patients experienced at least one episode of relapse. The mean age of patients who did not experience a relapse was significantly higher than that of patients who relapsed while relapsers had a significantly longer duration of 24 h proteinuria prior to biopsy compared to non-relapsers. Overall, 10% of patients experienced acute kidney injury while the mean eGFR at the end was 82 mL/min/1.73 m2 (±29.1) and one patient ended up in chronic dialysis. Overall, the proportion of non-relapsers, who experienced acute kidney injury (17%) was significantly higher than the one recorded among relapsers (0%).Conclusion: In this series of patients, almost 46% of adult-onset nephrotic MCD patients experienced a relapse, although their renal progression was rare. Younger onset age was an independent risk factor for relapse in adult-onset MCD patients.

scholarly journals Intrathecal 0.5% Isobaric Bupiv Acaine Versus 0.5% Isobaric Ropiv Acaine for HIP Surgeries

2021 ◽  
pp. 312-315
Author(s):  
M. Raj
Keyword(s):  
Motor Block ◽  
Sensory Block ◽  
Mean Value ◽  
Value Of Time ◽  
Sensory Motor ◽  
The Mean ◽  
Group B

The sensory motor block for ropivacaine starts at 6.4 minutes and similarly for bupivacaine is 3.32 minutes. The sensory block for ropivacaine is from ranges from T8-T12 and for bupivacaine its T4 - T8 level. The time taken for motor block is 203.8 and for group R its 142.9min. In group B, the mean value of time taken for two segment regression is 97.9 minutes. The time taken for group R to regress is 63.7. In Group its 4. 70 minutes. In Group R the    mean onset of motor block is 9.40 minutes.

scholarly journals MiR-22-3p suppresses sepsis-induced acute kidney injury by targeting PTEN

2020 ◽  
Vol 40 (6) ◽  
Author(s):  
Xudong Wang ◽  
Yali Wang ◽  
Mingjian Kong ◽  
Jianping Yang
Keyword(s):  
Acute Kidney Injury ◽  
Inflammatory Response ◽  
Periodic Acid ◽  
Kidney Injury ◽  
Luciferase Reporter ◽  
Tunel Staining ◽  
Tnf Α

Abstract Background: Septic acute kidney injury is considered as a severe and frequent complication that occurs during sepsis. The present study was performed to understand the role of miR-22-3p and its underlying mechanism in sepsis-induced acute kidney injury. Methods: Rats were injected with adenovirus carrying miR-22-3p or miR-NC in the caudal vein before cecal ligation. Meanwhile, HK-2 cells were transfected with the above adenovirus following LPS stimulation. We measured the markers of renal injury (blood urea nitrogen (BUN), serum creatinine (SCR)). Histological changes in kidney tissues were examined by hematoxylin and eosin (H&E), Masson staining, periodic acid Schiff staining and TUNEL staining. The levels of IL-1β, IL-6, TNF-α and NO were determined by ELISA assay. Using TargetScan prediction and luciferase reporter assay, we predicted and validated the association between PTEN and miR-22-3p. Results: Our data showed that miR-22-3p was significantly down-regulated in a rat model of sepsis-induced acute kidney injury, in vivo and LPS-induced sepsis model in HK-2 cells, in vitro. Overexpression of miR-22-3p remarkably suppressed the inflammatory response and apoptosis via down-regulating HMGB1, p-p65, TLR4 and pro-inflammatory factors (IL-1β, IL-6, TNF-α and NO), both in vivo and in vitro. Moreover, PTEN was identified as a target of miR-22-3p. Furthermore, PTEN knockdown augmented, while overexpression reversed the suppressive role of miR-22-3p in LPS-induced inflammatory response. Conclusions: Our results showed that miR-22-3p induced protective role in sepsis-induced acute kidney injury may rely on the repression of PTEN.

the value of patient hydration prior to bone scintigraphy

2003 ◽  
Vol 5 (1) ◽  
pp. 13-18
Author(s):  
s. m. stace ◽  
s. m. huggett ◽  
b. k. denton ◽  
a. m. harries
Keyword(s):  
Soft Tissue ◽  
Bone Scintigraphy ◽  
Statistical Difference ◽  
Mean Value ◽  
Regions Of Interest ◽  
Femoral Diaphysis ◽  
Post Injection ◽  
Group A ◽  
The Mean ◽  
Group B

the aim of this study was to establish whether hydration prior to radiopharmaceutical injection, in addition to post injection hydration, contributed any value to image quality during bone scintigraphy. two hundred patients referred for bone imaging over a four month period were randomised into two groups. group a was issued with instructions to hydrate pre and post injection, and group b was only advised to hydrate between injection and scan. equal regions of interest (roi) were then drawn on each image: firstly over the femoral diaphysis, and secondly over the contra-lateral adductor area. the total number of gamma counts from the bone roi and the soft tissue roi was then expressed as a ratio, and a mean value for each group was established.the mean ratio for group a was found to be 2.25, and for group b 2.30. a t test of variance confirmed that there was no statistical difference between the ratios of the groups (t = 50.272, n = 5100, p = 50.618). it was concluded that hydration levels prior to bone scintigraphy injection, where it is preserved post injection, have no significant effect on the bone-soft tissue (b:st) ratio in the image.

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