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Wali HA, Alabdulwahed MA, Al-Hussain GY, Alabbad MA, Al-Khalaf LH, Alhumaidi SS, Alhussain K, Alomair SM, Almulhim AS. Assessment of knowledge, attitude, and practices of acute kidney injury incidence with co-administration of piperacillin/tazobactam and vancomycin among healthcare workers: A cross-sectional study. Saudi Pharm J 2023; 31:904-910. [PMID: 37234343 PMCID: PMC10205774 DOI: 10.1016/j.jsps.2023.04.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/18/2023] [Indexed: 05/27/2023] Open
Abstract
Background No studies have identified a link between acute kidney injury (AKI) incidence due to the co-administration of vancomycin and piperacillin/tazobactam (VPT) and healthcare providers' knowledge, attitudes, and practices. We aimed to (1) assess the knowledge, attitudes, and practices towards AKI due to VPT co-administration among healthcare providers in Saudi Arabia, and (2) examine the relationship between healthcare providers' knowledge and attitudes about AKI due to VPT co-administration and their practices. Methods This cross-sectional study was conducted between February 2022 and April 2022. Healthcare providers, including physicians, pharmacists, and nurses, were included in the study population. The correlation coefficient assessed the relationship between knowledge, attitude, and practice. Spearman's rho was used as a test statistic. Results Of the invited healthcare providers, 192 responded to the survey. A significant difference in knowledge was found among healthcare providers for two variables: the definition of AKI (p < 0.001) and appropriate management of AKI due to VPT (p = 0.002). Physicians were found to rely less on the most common causative organisms of infection to guide empirical antibiotic therapy (p < 0.001). In addition, physicians were less likely to switch piperacillin/tazobactam to cefepime or meropenem in combination with vancomycin with AKI incidence (p = 0.001). A positive attitude towards the perceived AKI risk with VPT was positively correlated with avoiding using VPT unless no alternatives were available (Rho = 0.336) and taking protective measures when using VPT (Rho = 0.461). Conclusion Deviation has been observed in the knowledge, attitudes, and practices of AKI incidence with the co-administration of piperacillin/tazobactam and vancomycin among healthcare workers. Interventions at the organizational level are recommended to guide best practices.
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Affiliation(s)
- Haytham A. Wali
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Mohammed A. Alabdulwahed
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Ghaida Y. Al-Hussain
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
- Department of Pharmacy Services, Al-Ahsa Hospital, Al-Ahsa, Saudi Arabia
| | - Meaid A. Alabbad
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Lojain H. Al-Khalaf
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Sarah S. Alhumaidi
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Khalid Alhussain
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Sufyan M. Alomair
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Abdulaziz S. Almulhim
- Department of Pharmacy Practice, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
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Aboelwafa HR, Ramadan RA, Ibraheim SS, Yousef HN. Modulation Effects of Eugenol on Nephrotoxicity Triggered by Silver Nanoparticles in Adult Rats. BIOLOGY 2022; 11:biology11121719. [PMID: 36552229 PMCID: PMC9774980 DOI: 10.3390/biology11121719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 11/21/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022]
Abstract
The use of silver nanoparticles (AgNPs) is expanding. This study evaluates the modulator effect of eugenol (Eug) on AgNP-induced nephrotoxicity in rats. Sixty male rats were separated into six groups: control, Eug, AgNPs low-dose, AgNPs high-dose, Eug + AgNPs low-dose, and Eug + AgNPs high-dose. After 30 days, kidney function, antioxidative and proinflammatory status, histopathological, histomorphometrical, and immunohistochemical assessments were performed. AgNPs markedly induced oxidative stress in renal tissues, characterized by increased levels of blood urea nitrogen, creatinine, uric acid, kidney injury molecule-1, the total oxidant capacity, malondialdehyde, tumor necrosis factor-alpha (TNF-α), and interleukin-6, as well as decreased levels of the total antioxidant capacity, superoxide dismutase, catalase, reduced glutathione, and glutathione peroxidase. Moreover, the normal renal architecture was destroyed, and the thickness of the renal capsules, cortex, and medulla, alongside the diameter and quantity of the normal Malpighian corpuscles and the proximal and distal convoluted tubules were decreased. Immunoreactivity for P53, caspase-3, and TNF-α reactive proteins were significantly increased; however, Bcl-2 immunoreactivity was decreased. Eug reversed most biochemical, histological, histomorphometrical, and immunohistochemical changes in AgNP-treated animals. This study demonstrated that nephrotoxicity in AgNP-treated rats was mitigated by an Eug supplementation. Eug's antioxidant, antiapoptotic, and anti-inflammatory capabilities were the key in modulating AgNPs nephrotoxicity.
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Renal Papillary Necrosis Associated with Multiple Risk Factors: A Case Report. Nephrourol Mon 2022. [DOI: 10.5812/numonthly-127074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Introduction: Renal papillary necrosis (RPN) is a multifactorial complication that occurs under the following conditions: Pyelonephritis, obstruction of the urogenital tract, non-steroidal anti-inflammatory drugs (NSAIDs) abuse, diabetes mellitus (DM2), and coronavirus disease 2019 (COVID-19). The present report presented a case of right ureteral obstruction due to RPN. Case Presentation: The patient was a 68-year-old woman referred to the hospital due to flank pain, fever, vomiting/nausea, frequency, and nocturia. She also had a history of DM2, hypertension, dialysis, COVID-19, and the use of NSAIDs and antihypertensive. The results of computed tomography (CT) scan suspected a clot, bladder fungus or RPN, and COVID-19. After performing the ultrasound, mild hydroureteronephrosis and two echogenic foci were seen in the right kidney, suggesting a possible RPN. The patient was transferred to the urology service. After cystoscopy and urethroscopy, a severe stenosis was seen in the distal right ureter. As soon as inserting double J, lots of pus came out. The definitive diagnosis was RPN, ureteral obstruction, and pyelonephritis. Conclusions: It is important to pay enough attention to the disorders related to the urinary system, especially in the elderly with a history of NSAIDs abuse, DM2, hypertension, COVID-19, and renal diseases. Additionally, the underlying diseases, blood glucose, infection, dehydration, and use of NSAIDs must be well-controlled to protect nephro-ureteral structures.
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TÜRKMEN NB, YÜCE H, TAŞLIDERE A, ŞAHİN Y, ÇİFTÇİ O. The Ameliorate Effects of Nerolidol on Thioasteamide-induced Oxidative Damage in Heart and Kidney Tissue. Turk J Pharm Sci 2022; 19:1-8. [DOI: 10.4274/tjps.galenos.2021.30806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Birk B, Haake V, Sperber S, Herold M, Wallisch SK, Huener HA, Verlohner A, Amma MM, Walk T, Hernandez TR, Hewitt NJ, Kamp H, van Ravenzwaay B. Use of in vitro metabolomics in NRK cells to help predicting nephrotoxicity and differentiating the MoA of nephrotoxicants. Toxicol Lett 2021; 353:43-59. [PMID: 34626816 DOI: 10.1016/j.toxlet.2021.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 08/06/2021] [Accepted: 09/29/2021] [Indexed: 12/25/2022]
Abstract
We describe a strategy using an in vitro metabolomics assay with tubular rat NRK-52E cells to investigate the Modes of Action (MoAs) of nephrotoxic compounds. Chemicals were selected according to their MoAs based on literature information: acetaminophen, 4-aminophenol and S-(trichlorovinyl-)L-cysteine (TCVC), (covalent protein binding); gentamycin, vancomycin, polymycin B and CdCl2 (lysosomal overload) and tenofovir and cidofovir (mitochondrial DNA-interaction). After treatment and harvesting of the cells, intracellular endogenous metabolites were quantified relative to vehicle control. Metabolite patterns were evaluated in a purely data-driven pattern generation process excluding published information. This strategy confirmed the assignment of the chemicals to the respective MoA except for TCVC and CdCl2. Finally, TCVC was defined as unidentified and CdCl2 was reclassified to the MoA "covalent protein binding". Hierarchical cluster analysis of 58 distinct metabolites from the patterns enabled a clear visual separation of chemicals in each MoA. The assay reproducibility was very good and metabolic responses were consistent. These results support the use of metabolome analysis in NRK-52E cells as a suitable tool for understanding and investigating the MoA of nephrotoxicants. This assay could enable the early identification of nephrotoxic compounds and finally reduce animal testing.
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Affiliation(s)
- Barbara Birk
- Experimental Toxicology and Ecology, BASF SE, Ludwigshafen, Germany.
| | | | - Saskia Sperber
- Experimental Toxicology and Ecology, BASF SE, Ludwigshafen, Germany
| | | | | | | | | | - Meike M Amma
- Experimental Toxicology and Ecology, BASF SE, Ludwigshafen, Germany
| | | | | | | | - Hennicke Kamp
- Experimental Toxicology and Ecology, BASF SE, Ludwigshafen, Germany; BASF Metabolome Solutions GmbH, Berlin, Germany
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Kumar V, Akhouri V, Singh SK, Kumar A. Phytoremedial effect of Tinospora cordifolia against arsenic induced toxicity in Charles Foster rats. Biometals 2020; 33:379-396. [PMID: 33026605 DOI: 10.1007/s10534-020-00256-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 09/30/2020] [Indexed: 10/23/2022]
Abstract
Arsenic poisoning is one of the most serious health hazards of recent times. It has been estimated that more than 200 million people of about 105 countries in the world are affected due to arsenic poisoning. Except mitigation, there is no such mode by which the population can be prevented from being exposed to arsenic. Tinospora cordifolia (T. cordifolia) is widely used in the folk medicine system for the treatment of various diseases. Hence, the aim of the present study was to investigate the antidote effects of ethanolic extract of T. cordifolia stem against arsenic induced hepato-renal toxicity in rat model. Twenty-four male Charles Foster rats (weighing 160-180 g) were randomly divided into two groups, where six rats were used as control group. Eighteen rats were orally treated with arsenic at the dose of 8 mg/kg body weight for 90 days daily and then further divided into three sub groups (n = 6 each). Sub group I-arsenic treated rats, were sacrificed after treatment; sub group II rats were used as arsenic control and the sub group III rats were administrated with T. cordifolia at the dose of 400 mg/kg body weight/day for 90 days. After the completion of dose duration, all the control and treatment group rats were sacrificed to evaluate the various parameters. Arsenic induced rats had significantly (p < 0.0001) altered biochemical serum levels of SGPT, SGOT, ALP, total bilirubin, urea, uric acid, creatinine and albumin; But, after the administration of T. cordifolia there was significant (p < 0.0001) restoration observed in these liver and kidney function parameters. The T. cordifolia administration also significantly (p < 0.0001) restored the serum MDA levels and arsenic concentration in blood, liver and kidney tissues, as well as significant (p < 0.0001) improvement in haematological variables. In histopathological study, the arsenic treated rats showed degenerative changes in the liver and kidney tissues such as lesions and vacuolizations in hepatocytes and nephrocytes respectively. However, after the administration with T. cordifolia rats, there was considerably significant restoration in liver and kidney tissues. The entire study suggests that arsenic caused severe damage to the liver and kidney at haematological, biochemical and histopathological levels in rats. However, T. cordifolia played the vital role to combat the arsenic induced toxicity in rats. Hence, T. cordifolia might be used as a nutritional supplement to combat the arsenic led toxicity among the exposed population.
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Affiliation(s)
- Vikas Kumar
- Anugrah Narayan College, Patna, Bihar, India
| | | | | | - Arun Kumar
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India.
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Wimalawansa SJ. Does fluoride cause the mysterious chronic kidney disease of multifactorial origin? ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:3035-3057. [PMID: 31997043 DOI: 10.1007/s10653-019-00503-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
A chronic kidney disease of multifactorial origin (CKDmfo), also known as CKD of unknown origin, started to manifest during the past four decades in certain economically poor, peri-equatorial agricultural countries. CKDmfo is an environmentally induced, occupationally-mediated, chronic tubulointerstitial disease. Prolonged exposure to environmental nephrotoxic agents and extenuating conditions are prerequisites for its manifestation. More than 30 causative factors have been postulated, but none one has been properly scientifically tested, to be able to include or exclude. In recent years, fluoride has come to be considered a key contender as a causative agent of CKDmfo. Therefore, this review examines the pros and cons of that theory and the potential plausibility that fluoride causes CKDmfo. It also examines the potential interactions and additive or synergistic effects of certain geogenic factors, especially, the plausibility of CaPO4-3 apatite and fluorapatite crystals and nanotube formation in concentrated tubular filtrate and within tubular cells, in renal tubules. The information presented is based on published work and data collected over the past two decades in Sri Lanka. However, the evidence and concepts are applicable to all CKDmfo-affected countries. Thus, the presented content might facilitate scientists to narrowed down causative factors to just a few and government departments to implement effective programs for preventing this disease. The findings suggest that in addition to the geogenic components, disease manifestation requires (A) prolonged exposure to environmental nephrotoxins and factors, (B) interactions among elements (Ca2+, PO4-3 , F-, and Mg2+), and (C) vulnerability of the person, such as chronic dehydration, and antioxidant and micronutrient deficiencies. In vivo precipitation of nanominerals in renal tubular tissues that arising over several years causes tubulointerstitial disease-CKDmfo. Inherent vulnerabilities and conditions, together with nanomineral precipitation, trigger renal tubular cell oxidative stresses, inflammation, and fibrosis, and eventually causing tubulointerstitial chronic renal failure-CKDmfo.
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Factors Affecting the Environmentally Induced, Chronic Kidney Disease of Unknown Aetiology in Dry Zonal Regions in Tropical Countries—Novel Findings. ENVIRONMENTS 2019. [DOI: 10.3390/environments7010002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new form of chronic tubulointerstitial kidney disease (CKD) not related to diabetes or hypertension appeared during the past four decades in several peri-equatorial and predominantly agricultural countries. Commonalities include underground stagnation of drinking water with prolonged contact with rocks, harsh climatic conditions with protracted dry seasons, and rampant poverty and malnutrition. In general, the cause is unknown, and the disease is therefore named CKD of unknown aetiology (CKDu). Since it is likely caused by a combination of factors, a better term would be CKD of multifactorial origin (CKDmfo). Middle-aged malnourished men with more than 10 years of exposure to environmental hazards are the most vulnerable. Over 30 factors have been proposed as causative, including agrochemicals and heavy metals, but none has been properly tested nor proven as causative, and unlikely to be the cause of CKDmfo/CKDu. Conditions such as, having favourable climatic patterns, adequate hydration, and less poverty and malnutrition seem to prevent the disease. With the right in vivo conditions, chemical species such as calcium, phosphate, oxalate, and fluoride form intra-renal nanomineral particles initiating the CKDmfo. This article examines the key potential chemical components causing CKDmfo together with the risk factors and vulnerabilities predisposing individuals to this disease. Research findings suggest that in addition to drinking water from stagnant sources that contain high ionic components, more than 10 years of exposure to environmental nephrotoxins and micronutrient malnutrition are needed to contract this fatal disease.
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Zhou Y, Yang Y, Wang P, Wei M, Ma Y, Wu X. Adefovir accumulation and nephrotoxicity in renal interstitium: Role of organic anion transporters of kidney. Life Sci 2019; 224:41-50. [PMID: 30902543 DOI: 10.1016/j.lfs.2019.03.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/06/2019] [Accepted: 03/18/2019] [Indexed: 12/28/2022]
Abstract
Common characteristics of drug induced nephrotoxicity are renal tubular and interstitial injury. Many studies have only focused on renal tubular injury. However, less is known about the effects of drugs in the renal interstitium on the nephrotoxicity. The aim of this study was to investigate the pharmacokinetics of adefovir (ADV) and the nephrotoxicity in the renal interstitium. Rats were treated with ADV alone or in combination with probenecid for 1, 7, 14, or 28 days. The renal interstitial fluid was collected by renal microdialysis. The concentration of ADV was determined by HPLC-MS/MS. Nephrotoxicity was evaluated by biochemical parameters or histological analysis. The results showed that organic anion transporters (OATs) inhibitor probenecid significantly increased the area under concentration-time curves (AUC) and peak concentration (Cmax) of ADV in the renal interstitium, while the clearance (CL) in the renal interstitium was decreased in the ADV plus probenecid group compared to the ADV groups. After long-term treatment, interstitial fibrosis was present in the ADV plus probenecid group, whereas no trace of that could be detected in the ADV groups. Furthermore, a decrease was observed in the expression of OATs/Oats, which was dependent upon the concentrations and time of ADV treatment. In conclusion, it is possible that ADV could be accumulated in the interstitium when Oats were inhibited, which could cause renal interstitial fibrosis. Simply reducing cell uptake in long-term treatment might not be an effective method to protect against chronic nephrotoxicity.
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Affiliation(s)
- Yan Zhou
- Depart of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Yuquan Yang
- Depart of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China; College of Pharmacy, Lanzhou University, Lanzhou, China
| | - Pei Wang
- The Second Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Mengmeng Wei
- Depart of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China; College of Pharmacy, Lanzhou University, Lanzhou, China
| | - Yanrong Ma
- Depart of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xin'an Wu
- Depart of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China.
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Thangapandiyan S, Ramesh M, Miltonprabu S, Hema T, Jothi GB, Nandhini V. Sulforaphane potentially attenuates arsenic-induced nephrotoxicity via the PI3K/Akt/Nrf2 pathway in albino Wistar rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:12247-12263. [PMID: 30835071 PMCID: PMC6476857 DOI: 10.1007/s11356-019-04502-w] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 02/05/2019] [Indexed: 05/31/2023]
Abstract
Oxidative stress plays a significant role in the pathophysiology of numerous kidney diseases, generally mediated by reactive oxygen species (ROS). Arsenic (Ar) is known to exert its toxicity through the generation of ROS and inflammation. The current study investigates the protective effects of sulforaphane (SFN) against arsenic-induced renal damage via PI3K/Akt-mediated Nrf2 pathway signaling. Thirty-two male albino Wistar rats were randomly divided into four groups of eight animals each, designated as control, arsenic (Ar), sulforaphane plus Ar (SFN+Ar), and sulforaphane alone (SFN), with oral administration of Ar (5 mg/kg BW) and SFN (80 mg/kg BW) daily for 28 days. Ar administration significantly (P < 0.05) increased the levels of ROS, OHdG, Ar accumulation, and lipid peroxidation, and decreased levels of enzymatic and nonenzymatic antioxidants. Notably, a significant (P < 0.05) increase was observed in markers of apoptosis, DNA damage, TUNEL-positive cells, and dark staining of ICAM-1 in renal tissue with decreased PI3K/Akt/Nrf2 gene expression. The biochemical findings were supported by histopathological and electron microscopy evaluation, which showed severe renal damage in rats treated with Ar. Pretreatment with SFN significantly (P < 0.05) attenuated renal ROS, OHdG, lipid peroxidation, and DNA damage, and increased phase II antioxidants via PI3K/Akt-mediated Nrf2 activation in renal tissue. These results show that dietary supplementation with SFN protects against Ar-induced nephrotoxicity via the PI3K/Akt-mediated Nrf2 signaling pathway in the rat kidney.
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Affiliation(s)
- Shanmugam Thangapandiyan
- N-PDF, Unit of Toxicology, Department of Zoology, Bharathiar University, Coimbatore, Tamilnadu, 641064, India.
| | - Mathan Ramesh
- Unit of Toxicology, Department of Zoology, Bharathiar University, Coimbatore, Tamilnadu, 641 046, India
| | | | - Tamilselvan Hema
- Unit of Toxicology, Department of Zoology, Bharathiar University, Coimbatore, Tamilnadu, 641 046, India
| | | | - Venkatesan Nandhini
- Unit of Toxicology, Department of Zoology, Bharathiar University, Coimbatore, Tamilnadu, 641 046, India
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Shaikh Omar AM. The potential protective influence of flaxseed oil against renal toxicity induced by thioacetamide in rats. Saudi J Biol Sci 2018; 25:1696-1702. [PMID: 30591787 PMCID: PMC6303138 DOI: 10.1016/j.sjbs.2016.09.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/10/2016] [Accepted: 09/25/2016] [Indexed: 12/16/2022] Open
Abstract
The present study was aimed to evaluate the influence of flaxseed oil on renal toxicity induced by thioacetamide in male rats. The animals were distributed into four groups. Rats of the first group were served as control. Rats of the second group were exposed to thioacetamide. Rats of the third group were treated with flaxseed oil and thioacetamide. Rats of the fourth group were treated with flaxseed oil. Significant increases of blood creatinine and uric acid were observed in TAA-treated rats after three weeks. In thioacetamide group, the levels of serum creatinine, blood urea nitrogen and uric acid were significantly elevated after six weeks. Histopathologically, the renal sections from thioacetamide-treated rats showed severe alterations in the structure of renal corpuscles including a degeneration of glomeruli and Bowman's capsules. Administration of flaxseed oil protects the observed biochemical and histopathological alterations induced by thioacetamide exposure. Hence, the results of this study suggest that flaxseed oil protects against thioacetamide-induced renal injury and the protective influence of flaxseed oil may be attributed to its antioxidant role.
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Keshk WA, Zahran SM. Mechanistic role of cAMP and hepatocyte growth factor signaling in thioacetamide-induced nephrotoxicity: Unraveling the role of platelet rich plasma. Biomed Pharmacother 2018; 109:1078-1084. [PMID: 30551358 DOI: 10.1016/j.biopha.2018.10.121] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/16/2018] [Accepted: 10/20/2018] [Indexed: 12/16/2022] Open
Abstract
Chronic kidney diseases occur as result of exposure to wide range of deleterious agents as environmental pollutants, toxins and drug. Currently, there is no effective protective therapy against renal damage, fibrosis and its sequel of end stage renal disease. Platelet-rich plasma (PRP) has a progressively gained consideration in wound healing, repair/regeneration of damaged tissues and conservation of organ function. However, its impact on thioacetamide (TAA) induced chronic renal damage has not been elucidated yet. So, the present study was carried out to evaluate the possible protective and regenerative effect of PRP against TAA induced renal damage and their potential underlying mechanism. PRP treatment improved redox state, renal function disturbed histologicl features; decreased monocyte chemo-attractant protein-1 (MCP-1) level; increased Peroxisome proliferator-activated receptor gamma co-activator-1α (PGC-1α) marker of mitochondrial biogenesis and metabolism; cyclic adenosine monophosphate (cAMP); hepatocyte growth factor (HGF) and autophagy protein beclin-1 level. In addition, PRP treatment decreased apoptosis and fibrosis as evidenced by decreased active caspase3 and α-SMA expression and immunoreactivity, respectively. In conclusion, PRP could potentially protect against TTA-induced chronic kidney damage by alleviating oxidative stress, improving, mitochondrial biogenesis, autophagy, disruption of the inflammatory, apoptotic and fibrotic response induced by TTA.
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Affiliation(s)
- Walaa Arafa Keshk
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, El-Geish Street, Tanta, El-Gharbia, Egypt.
| | - Samer Mahmoud Zahran
- Biochemistry Department, Faculty of Pharmacy and Drug Manufacturing, Pharos University, Alexandria, Egypt
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Hard GC. Critical review of renal tubule karyomegaly in non-clinical safety evaluation studies and its significance for human risk assessment. Crit Rev Toxicol 2018; 48:575-595. [DOI: 10.1080/10408444.2018.1503641] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Yousef HN, Aboelwafa HR. The potential protective role of taurine against 5-fluorouracil-induced nephrotoxicity in adult male rats. ACTA ACUST UNITED AC 2017; 69:265-274. [PMID: 28189472 DOI: 10.1016/j.etp.2017.01.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 12/05/2016] [Accepted: 01/31/2017] [Indexed: 12/26/2022]
Abstract
Nephrotoxicity is common with the use of the chemotherapeutic agent 5-Fluorouracil (5-FU). The current study aimed to investigate the probable protective effect of taurine (TAU) against 5-FU-induced nephrotoxicity in rats using biochemical, histological and ultrastructural approaches. Twenty-four rats were equally divided into control, TAU, 5-FU and 5-FU+TAU groups. 5-FU significantly elevated levels of blood urea nitrogen (BUN), creatinine, and uric acid; while it reduced activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px). Also, 5-FU induced significant elevation in malondialdehyde (MDA) levels accompanied with marked decline in γ-glutamyltranspeptidase (GGT) and alkaline phosphatase (AP) levels in kidney tissues. These biochemical alterations were accompanied by histopathological changes marked by destruction of the normal renal structure, in addition to ultrastructural alterations represented by thickened and irregular glomerular basement membranes, congested glomerular capillaries, damaged lining fenestrated endothelium, mesangial cells hyperplasia with expanded mesangial matrix, and distorted podocyte's processes. Also, the proximal (PCT) and distal (DCT) convoluted tubules showed thickened basement membranes, destructed apical microvilli and loss of basal infoldings of their epithelial cells. Administration of TAU to 5-FU-treated rats reversed most of the biochemical, histological, and ultrastructural alterations. These results indicate that TAU has a protective effect against 5-FU-induced nephrotoxicity.
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Affiliation(s)
- Hany N Yousef
- Department of Biological and Geological Sciences, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
| | - Hanaa R Aboelwafa
- Department of Biological and Geological Sciences, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
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Al-Attar AM, Alrobai AA, Almalki DA. Protective effect of olive and juniper leaves extracts on nephrotoxicity induced by thioacetamide in male mice. Saudi J Biol Sci 2017; 24:15-22. [PMID: 28053566 PMCID: PMC5198929 DOI: 10.1016/j.sjbs.2015.08.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/17/2015] [Accepted: 08/23/2015] [Indexed: 02/04/2023] Open
Abstract
This study, for the first time, evaluates the effect of olive and juniper leaves extracts and their combination on thioacetamide (TAA)-induced nephrotoxicity in male mice. The experimental mice were divided into eight groups. Group 1 was served as control. Group 2 was exposed to TAA. Group 3 was treated with TAA and olive leaves extract. Group 4 was subjected to TAA and juniper leaves extract. Group 5 was exposed to TAA and olive and juniper leaves extracts. Groups 6, 7 and 8 were treated with olive, juniper, and olive and juniper leaves extracts respectively. In mice treated with only TAA, significant increases of blood urea nitrogen and uric acid were observed after six weeks. Moreover, levels of serum creatinine, blood urea nitrogen and uric acid were statistically increased in mice administrated with only TAA for twelve weeks. Insignificant alterations in levels of these haematobiochemical parameters were noted in other treated groups after six and twelve weeks. Histopathological evaluations of renal sections from mice treated with only TAA for twelve weeks showed severe damage of the renal corpuscles. Furthermore, the renal sections from mice treated with TAA and olive leaves extract, TAA and juniper leaves extract, TAA and olive and juniper leaves extracts, olive leaves extract, juniper leaves extract, and olive and juniper leaves extracts showed normal structures. In addition, it is conceivable therefore, that these extracts exhibit protective influences against TAA-induced nephrotoxicity, probably mediated through the antioxidative pathway roles.
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Affiliation(s)
- Atef M Al-Attar
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 139109, Jeddah 21323, Saudi Arabia
| | - Ali A Alrobai
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 139109, Jeddah 21323, Saudi Arabia
| | - Daklallah A Almalki
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 139109, Jeddah 21323, Saudi Arabia
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Sabiu S, O'Neill FH, Ashafa AOT. Membrane Stabilization and Detoxification of Acetaminophen-Mediated Oxidative Onslaughts in the Kidneys of Wistar Rats by Standardized Fraction of Zea mays L. (Poaceae), Stigma maydis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2016; 2016:2046298. [PMID: 27579048 PMCID: PMC4992545 DOI: 10.1155/2016/2046298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/22/2016] [Indexed: 01/24/2023]
Abstract
This study evaluated membrane stabilization and detoxification potential of ethyl acetate fraction of Zea mays L., Stigma maydis in acetaminophen-induced oxidative onslaughts in the kidneys of Wistar rats. Nephrotoxic rats were orally pre- and posttreated with the fraction and vitamin C for 14 days. Kidney function, antioxidative and histological analyses were thereafter evaluated. The acetaminophen-mediated significant elevations in the serum concentrations of creatinine, urea, uric acid, sodium, potassium, and tissue levels of oxidized glutathione, protein-oxidized products, lipid peroxidized products, and fragmented DNA were dose-dependently assuaged in the fraction-treated animals. The fraction also markedly improved creatinine clearance rate, glutathione, and calcium concentrations as well as activities of superoxide dismutase, catalase, glutathione reductase, and glutathione peroxidase in the nephrotoxic rats. These improvements may be attributed to the antioxidative and membrane stabilization activities of the fraction. The observed effects compared favorably with that of vitamin C and are informative of the fraction's ability to prevent progression of renal pathological conditions and preserve kidney functions as evidently supported by the histological analysis. Although the effects were prominently exhibited in the fraction-pretreated groups, the overall data from the present findings suggest that the fraction could prevent or extenuate acetaminophen-mediated oxidative renal damage via fortification of antioxidant defense mechanisms.
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Affiliation(s)
- S. Sabiu
- Phytomedicine and Phytopharmacology Research Group, Department of Plant Sciences, University of the Free State, QwaQwa Campus, Phuthaditjhaba 9866, South Africa
- Department of Microbial, Biochemical, and Food Biotechnology, University of the Free State, Nelson Mandela Drive, P.O. Box 339, Bloemfontein 9301, South Africa
| | - F. H. O'Neill
- Department of Microbial, Biochemical, and Food Biotechnology, University of the Free State, Nelson Mandela Drive, P.O. Box 339, Bloemfontein 9301, South Africa
| | - A. O. T. Ashafa
- Phytomedicine and Phytopharmacology Research Group, Department of Plant Sciences, University of the Free State, QwaQwa Campus, Phuthaditjhaba 9866, South Africa
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Wink S, Hiemstra S, Huppelschoten S, Danen E, Niemeijer M, Hendriks G, Vrieling H, Herpers B, van de Water B. Quantitative high content imaging of cellular adaptive stress response pathways in toxicity for chemical safety assessment. Chem Res Toxicol 2014; 27:338-55. [PMID: 24450961 DOI: 10.1021/tx4004038] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Over the past decade, major leaps forward have been made on the mechanistic understanding and identification of adaptive stress response landscapes underlying toxic insult using transcriptomics approaches. However, for predictive purposes of adverse outcome several major limitations in these approaches exist. First, the limited number of samples that can be analyzed reduces the in depth analysis of concentration-time course relationships for toxic stress responses. Second these transcriptomics analysis have been based on the whole cell population, thereby inevitably preventing single cell analysis. Third, transcriptomics is based on the transcript level, totally ignoring (post)translational regulation. We believe these limitations are circumvented with the application of high content analysis of relevant toxicant-induced adaptive stress signaling pathways using bacterial artificial chromosome (BAC) green fluorescent protein (GFP) reporter cell-based assays. The goal is to establish a platform that incorporates all adaptive stress pathways that are relevant for toxicity, with a focus on drug-induced liver injury. In addition, cellular stress responses typically follow cell perturbations at the subcellular organelle level. Therefore, we complement our reporter line panel with reporters for specific organelle morphometry and function. Here, we review the approaches of high content imaging of cellular adaptive stress responses to chemicals and the application in the mechanistic understanding and prediction of chemical toxicity at a systems toxicology level.
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Affiliation(s)
- Steven Wink
- Division of Toxicology, Leiden Academic Centre for Drug Research (LACDR), Leiden University , The Netherlands
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21
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Kadir FA, Kassim NM, Abdulla MA, Yehye WA. Effect of oral administration of ethanolic extract of Vitex negundo on thioacetamide-induced nephrotoxicity in rats. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:294. [PMID: 24499255 PMCID: PMC4028978 DOI: 10.1186/1472-6882-13-294] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 10/24/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND Oxidative stress due to abnormal induction of reactive oxygen species (ROS) molecules is believed to be involved in the etiology of many diseases. Evidences suggest that ROS is involved in nephrotoxicity through frequent exposure to industrial toxic agents such as thioacetamide (TAA). The current investigation was designed to explore the possible protective effects of the leaves of Vitex negundo(VN) extract against TAA-induced nephrotoxicity in rats. METHODS Twenty four Sprague Dawleyrats were divided into four groups: (A) Normal control, (B) TAA (0.03% w/v in drinking water), (C) VN100 (VN 100 mg/kg + TAA) and (D) VN300 (VN 300 mg/kg + TAA). Blood urea and serum creatinine levels were measured,supraoxide dismutase (SOD), catalase (CAT) and malondialdehyde (MDA) levels of renal tissue were assayed. Histopathological analysis together with the oxidative stress nicotinamide adenine dinucleotide phosphate (NADPH) oxidase p22phox in kidney sections were examined in all experimental groups. RESULTS Blood urea and serum creatinine levels were increased in TAA group as a result of the nephrotoxicity compared to the VN100 and VN300 groups where, the levels were significantly decreased (p < 0.05). Renal MDA level was significantly decreased (p < 0.05) in the VN-treated groups with increased CAT and SOD activities compared to the TAA group. Light microscopic examination of renal tissues stained by H&E stain and Masson's Trichrome for TAA-treated groups revealed severe histopathological changes, whereas specimens obtained from VN-treated groups showed only mild changes. These findings were supported by immunohistochemical results. CONCLUSIONS VN extract acts as a natural potent antioxidant to prevent ongoing TAA-induced nephrotoxicity in rats, both biochemically and morphologically.
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Affiliation(s)
- Farkaad A Kadir
- Department of Anatomy, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Normadiah M Kassim
- Department of Anatomy, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Mahmood A Abdulla
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Wageeh A Yehye
- Nanotechnology & Catalysis Research Centre, (NANOCAT), University of Malaya, Block 3A, Institute of Postgraduate Studies Building, Kuala Lumpur 50603, Malaysia
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Immunohistochemical localisation of renal cyclooxygenase-1 expression in non-steroidal anti-inflammatory drug-treated mice. ACTA ACUST UNITED AC 2011; 63:39-42. [DOI: 10.1016/j.etp.2009.09.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2009] [Accepted: 09/07/2009] [Indexed: 11/20/2022]
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Assessment of the role of renal organic anion transporters in drug-induced nephrotoxicity. Toxins (Basel) 2010; 2:2055-82. [PMID: 22069672 PMCID: PMC3153278 DOI: 10.3390/toxins2082055] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 08/05/2010] [Accepted: 08/05/2010] [Indexed: 01/09/2023] Open
Abstract
In the present review we have attempted to assess the involvement of the organic anion transporters OAT1, OAT2, OAT3, and OAT4, belonging to the SLC22 family of polyspecific carriers, in drug-induced renal damage in humans. We have focused on drugs with widely recognized nephrotoxic potential, which have previously been reported to interact with OAT family members, and whose underlying pathogenic mechanism suggests the participation of tubular transport. Thus, only compounds generally believed to cause kidney injury either by means of direct tubular toxicity or crystal nephropathy have been considered. For each drug, or class of agents, the evidence for actual transport mediated by individual OATs under in vivo conditions is discussed. We have then examined their role in the context of other carriers present in the renal proximal tubule sharing certain substrates with OATs, as these are critical determinants of the overall contribution of OAT-dependent transport to intracellular accumulation and transepithelial drug secretion, and thus the impact it may have in drug-induced nephrotoxicity.
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Abstract
Balkan endemic nephropathy (BEN) is a chronic tubulointersticial nephropathy that is diagnosed in a few agrarian regions of Balkan. Even tough numerous dilemmas and conflicting opinions regarding BEN etiology are encountered in literature, prevailing theory is that BEN is caused by chronic poisoning with aristolochic acid ingested by food in people with genetic predisposition to this disease. BEN is categorized as a toxic tubulointerstitial nephropathy, with clinical picture and disease progression not differing from other tubulointerstitial nephropathies, but with insidious and gradual progression to end stage renal disease. There is no specific and sensitive diagnostic biomarkers for BEN and we use epidemiological and functional diagnostic criteria. It is considered that BEN affects up to 10% of population in endemic region. According to Renal Register of Bosnia and Herzegovina, there are around 15% of BEN patients on chronic dialysis program, but no official data on the number of predialysis BEN patients, because of lack of adequate demographic data and screening or systematic examinations of the population living in the affected region since 1991. The members of the Society of nephrology, dialysis and transplantation of Bosnia and Herzegovina organized screening in two villages of Bosanska Posavina, as a part of the "Program Program of detection of chronic kidney diseases in high-risk population in Bosnia and Herzegovina", project which was approved from International Society of nephrology. In this paper we analyze preliminary results of that Program and discuss previous studies about BEN in Bosnia and Herzegovina, particularly diagnostic criteria and biomarkers of BEN.
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Affiliation(s)
- Enisa Mesić
- Internal Clinic, Departement for Nephrology, University of Tuzla, Clinical Center, Trnovac bb 75000 Tuzla, Bosnia and Herzegovina
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25
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Abstract
Drug-induced nephrotoxicity is a common complication of several medications and diagnostic agents. It is seen in both inpatient and outpatient settings with variable presentations ranging from mild, reversible injury to advanced kidney disease. Manifestations of drug-induced nephrotoxicity include acid-base abnormalities, electrolyte imbalances, urine sediment abnormalities, proteinuria, pyuria, hematuria, and, most commonly, a decline in the glomerular filtration rate. The mechanisms of drug-induced nephrotoxicity may differ between various drugs or drug classes, and they are generally categorized based on the histological component of the kidney that is affected. Aminoglycoside antibiotics, radiocontrast media, conventional nonselective nonsteroidal anti-inflammatory drugs, and selective cyclooxygenase-2 inhibitors, amphotericin B, and angiotensin-converting enzyme inhibitors have been frequently implicated. This chapter reviews the clinical presentation and basic mechanisms of drug-induced nephrotoxicity.
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Affiliation(s)
- Thomas D Nolin
- Kidney Research Institute Department of Medicine Division of Nephrology University of Washington, Seattle, WA, USA
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26
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Arend LJ, Nadasdy T. Emerging therapy-related kidney disease. Arch Pathol Lab Med 2009; 133:268-78. [PMID: 19195969 DOI: 10.5858/133.2.268] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2008] [Indexed: 11/06/2022]
Abstract
CONTEXT Many new therapies have emerged within the last 5 to 10 years to treat a variety of conditions. Several of these have direct or indirect renal toxicities that may go undiagnosed without careful attention of the pathologist to a patient's clinical history, particularly the addition of new medications or treatments. OBJECTIVE To discuss patterns of renal injury resulting from medications or therapeutic regimens that have been introduced within the last 10 years. Recognition of these patterns may allow the pathologist to alert the attending clinician to a possible drug-induced renal injury and prevent further deterioration of renal function and possible chronic kidney disease. DATA SOURCES A review of recent literature and unpublished observations of case-derived material. CONCLUSIONS A number of newer therapies have emerged as agents of renal toxicity, producing a variety of pathologic changes in the kidney. The outcome can be acute or chronic glomerular, tubular, interstitial, and/or vascular injury. Some drugs will result in irreversible changes and end-stage renal disease, whereas many of the alterations can be reversed with removal of the offending agent, avoiding potential long-term kidney injury.
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Affiliation(s)
- Lois J Arend
- Department of Pathology and Laboratory Medicine, University of Cincinnati Academic Health Center, Cincinnati, Ohio, USA
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Sayari M, Avizeh R, Barati F. Microscopic evaluation of renal changes in experimental canine visceral leishmaniosis after chemo- and immunotherapy. Pak J Biol Sci 2008; 11:1630-3. [PMID: 18819654 DOI: 10.3923/pjbs.2008.1630.1633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Visceral Leishmania (VL) with diverse clinical manifestation is prevalent and remains a major public health problem in Iran. This study was performed in Ahwaz, Khozestan province southwest to increase immune system and to reduce of the renal lesions. Treatment of dogs with visceral leishmaniosis is basically the same as the treatment of human. However, cure is not usually achieved, leaving the sacrifice of animal as the only feasible choice. The goal of this work was to test the therapeutic efficacy of N-methyl glutamic antimoate (glucnime), Mycobacterium vaccae adjuvant (SRL 172), alone and in association with L. major promastigote and the latter compound in association to glucantime, in dog with visceral leishmaniasis. In this trial 18, mixed bred dogs with different ages, receiving amastigte promastigote of L. infantum intravenously were used. They were monitored for 6 months. Serologic assays (Elisa, Dot and IFAT) were performed on blood samples of each animal. The animals were divided into six groups, each having 3 dogs: Group 1: receiving 100 mg kg(-1) day(-1) Glucantime for 30 days, IM. Group 2: Receiving 3 mg dog(-1) (0.1 mL) of Mycobacterium vaccae adjuvant suspension intradermaly. Group 3: receiving L. major promastigote plus M. vaccae adjuvant each of them 0.1 mL intradermaly by one month intervals for 3 months. Group 4: receiving Glucantime in association L. major promastigote plus M. vaccae adjuvant with previous doses. Group 5: Receiving no treatment. Group 6: was control group with no infection and treatment. In microscopic evaluation following lesions have been shown in kidney: Chronic, interstitial nephritis, sever glomerulosclerosis, membranoproliferative glomerulonephritis and also non suppurative nephritis were the lesions in 5 groups. The prescription of Mycobacterium vaccae adjurant was able to reduce the number of parasites in the macrophages of liver and spleen in this round of treatment.
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Affiliation(s)
- M Sayari
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
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