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Soliman MM, Sarkar D, Glezerman I, Maybody M. Findings on intraprocedural non-contrast computed tomographic imaging following hepatic artery embolization are associated with development of contrast-induced nephropathy. World J Nephrol 2020; 9:33-42. [PMID: 33312900 PMCID: PMC7701934 DOI: 10.5527/wjn.v9.i2.33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/19/2020] [Accepted: 09/14/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Contrast-induced nephropathy (CIN) is a reversible form of acute kidney injury that occurs within 48-72 h of exposure to intravascular contrast material. CIN is the third leading cause of hospital-acquired acute kidney injury and accounts for 12% of such cases. Risk factors for CIN development can be divided into patient- and procedure-related. The former includes pre-existing chronic renal insufficiency and diabetes mellitus. The latter includes high contrast volume and repeated exposure over 72 h. The incidence of CIN is relatively low (up to 5%) in patients with intact renal function. However, in patients with known chronic renal insufficiency, the incidence can reach up to 27%.
AIM To examine the association between renal enhancement pattern on non-contrast enhanced computed tomographic (CT) images obtained immediately following hepatic artery embolization with development of CIN.
METHODS Retrospective review of all patients who underwent hepatic artery embolization between 01/2010 and 01/2011 (n = 162) was performed. Patients without intraprocedural CT imaging (n = 51), combined embolization/ablation (n = 6) and those with chronic kidney disease (n = 21) were excluded. The study group comprised of 84 patients with 106 procedures. CIN was defined as 25% increase above baseline serum creatinine or absolute increase ≥ 0.5 mg/dL within 72 h post-embolization. Post-embolization CT was reviewed for renal enhancement patterns and presence of renal artery calcifications. The association between non-contrast CT findings and CIN development was examined by Fisher’s Exact Test.
RESULTS CIN occurred in 11/106 (10.3%) procedures (Group A, n = 10). The renal enhancement pattern in patients who did not experience CIN (Group B, n = 74 with 95/106 procedures) was late excretory in 93/95 (98%) and early excretory (EE) in 2/95 (2%). However, in Group A, there was a significantly higher rate of EE pattern (6/11, 55%) compared to late excretory pattern (5/11) (P < 0.001). A significantly higher percentage of patients that developed CIN had renal artery calcifications (6/11 vs 20/95, 55% vs 21%, P = 0.02).
CONCLUSION A hyperdense renal parenchyma relative to surrounding skeletal muscle (EE pattern) and presence of renal artery calcifications on immediate post-HAE non-contrast CT images in patients with low risk for CIN are independently associated with CIN development.
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Affiliation(s)
- Mohamed M Soliman
- Interventional Radiology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
| | - Debkumar Sarkar
- Interventional Radiology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
| | - Ilya Glezerman
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
| | - Majid Maybody
- Interventional Radiology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
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Abstract
Seizures are not uncommon in renal transplant patients. The common aetiologies are metabolic disturbance associated with renal failure, immunosuppression and associated complications and infections. Their management can be challenging because of altered pharmacokinetics of antiepileptic drugs (AEDs) and their removal by dialysis. A practical approach to the management of seizure in renal transplant patients is discussed. This review highlights the guidelines for use of various AEDs in renal transplants.
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Affiliation(s)
- Harpreet Sawhney
- Department of Nephrology, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London W12 0HS, United Kingdom
| | - Simon S Gill
- Department of Radiology, Frimley Health NHS Foundation Trust, Slough, Berkshire SL2 4HL, United Kingdom
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Iacopo G, Allinovi M, Caroti L, Cirami LC. Broad spectrum of interferon-related nephropathies—glomerulonephritis, systemic lupus erythematosus-like syndrome and thrombotic microangiopathy: A case report and review of literature. World J Nephrol 2019. [DOI: 10.5527/wjgo.v8.i7.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] [Imported: 08/17/2023] Open
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Gianassi I, Allinovi M, Caroti L, Cirami LC. Broad spectrum of interferon-related nephropathies-glomerulonephritis, systemic lupus erythematosus-like syndrome and thrombotic microangiopathy: A case report and review of literature. World J Nephrol 2019; 8:109-117. [PMID: 31750091 PMCID: PMC6853798 DOI: 10.5527/wjn.v8.i7.109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/04/2019] [Accepted: 09/22/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Interferons (IFNs) are characterized by a wide range of biological effects, which justifies their potential therapeutic use in several pathologies, but also elicit a wide array of adverse effects in almost every organ system. Among them, renal involvement is probably one of the most complex to identify.
CASE SUMMARY We describe four cases of kidney damage caused by different IFN formulations: IFN-β-related thrombotic microangiopathy, IFN-β-induced systemic lupus erythematosus, and two cases of membranous nephropathy secondary to pegylated-IFN-α 2B. In each case, we carefully excluded any other possible cause of renal involvement. Once suspected as the casual relationship between drug and kidney damage, IFN treatment was immediately discontinued. In three cases, we observed a complete and persistent remission of clinical and laboratory abnormalities after IFN withdrawal, while the patient who developed thrombotic microangiopathy, despite IFN withdrawal and complement-inhibitor therapy with eculizumab, showed persistent severe renal failure requiring dialysis.
CONCLUSION This case series highlights the causal relationship between IFN treatment and different types of renal involvement and enables us to delineate several peculiarities of this association.
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Affiliation(s)
- Iacopo Gianassi
- Nephrology, Dialysis and Transplantation Unit, Careggi University Hospital, Florence 50144, Italy
| | - Marco Allinovi
- Nephrology, Dialysis and Transplantation Unit, Careggi University Hospital, Florence 50144, Italy
| | - Leonardo Caroti
- Nephrology, Dialysis and Transplantation Unit, Careggi University Hospital, Florence 50144, Italy
| | - Lino Calogero Cirami
- Nephrology, Dialysis and Transplantation Unit, Careggi University Hospital, Florence 50144, Italy
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van Sandwijk MS, Klooster A, ten Berge IJM, Diepstra A, Florquin S, Hoelbeek JJ, Bemelman FJ, Sanders JS. Complement activation and long-term graft function in ABO-incompatible kidney transplantation. World J Nephrol 2019; 8:95-108. [PMID: 31662955 PMCID: PMC6817790 DOI: 10.5527/wjn.v8.i6.95] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/29/2019] [Accepted: 10/18/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND ABO-incompatible and ABO-compatible kidney transplantation are equivalent in terms of short-term graft and patient survival. This is thought to be the result of ABO-incompatible graft accommodation, which occurs when anti-blood group antibodies re-occur after transplantation but somehow do not yield their detrimental effect. The underlying mechanism is unclear, but one of the hypotheses is that this is the result of complement inhibition. Since virtually all ABO-incompatible graft biopsies are C4d positive, this complement inhibition must occur somewhere in the complement cascade after the formation of C4d has already taken place, but where exactly is unclear. It is also unclear whether complement inhibition is complete. Incomplete accommodation could explain why recent studies have shown that long-term graft function in ABO-incompatible transplantation is somewhat inferior to ABO-compatible kidney transplantation.
AIM To unravel the relationship between pre-transplant anti-ABO antibodies, complement activation, and long-term graft function.
METHODS We included all 27 ABO-incompatible transplantations that were performed between 2008 and 2013 at the Academic Medical Center Amsterdam and the University Medical Center Groningen. For each ABO-incompatible transplantation, we included four ABO-compatible controls matched by age, sex, and transplantation date.
RESULTS Graft and patient survival were not significantly different. The slope of kidney function during five-year follow-up was also not significantly different, but ABO-incompatible recipients did have a lower kidney function at three months (creatinine clearance 58 vs 69 mL/min, P = 0.02, Modification of Diet in Renal Disease 46 vs 52 mL/min/1.73 m2, P = 0.08), due to a high rate of early rejection (33% vs 15%, P = 0.03), mostly T-cell mediated. Pre-transplant anti-ABO IgG titers were positively correlated with C5b-9 staining, which itself was positively correlated with the occurrence of T-cell mediated rejection. This may be the result of concurrent C5a formation, which could function as a costimulatory signal for T-cell activation.
CONCLUSION Co-stimulation of T-cell activation by ongoing complement activation by anti-ABO antibodies may be responsible for an impaired long-term graft function in ABO-incompatible kidney transplantation.
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Affiliation(s)
- Marit S van Sandwijk
- Department of Nephrology, Amsterdam University Medical Centers, Amsterdam NL-1105 AZ, Netherlands
- Dianet Dialysis Center, Amsterdam NL-1105 AZ, Netherlands
| | - Astrid Klooster
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen NL-9700 RB, Netherlands
- Department of Pathology, Pathology Friesland, Leeuwarden NL-8917 EN, Netherlands
| | - Ineke JM ten Berge
- Department of Nephrology, Amsterdam University Medical Centers, Amsterdam NL-1105 AZ, Netherlands
| | - Arjan Diepstra
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen NL-9700 RB, Netherlands
| | - Sandrine Florquin
- Department of Pathology, Amsterdam University Medical Centers, Amsterdam NL-1105 AZ, Netherlands
| | - Joris J Hoelbeek
- Department of Pathology, Amsterdam University Medical Centers, Amsterdam NL-1105 AZ, Netherlands
| | - Frederike J Bemelman
- Department of Nephrology, Amsterdam University Medical Centers, Amsterdam NL-1105 AZ, Netherlands
| | - Jan-Stephan Sanders
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen NL-9700 RB, Netherlands
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Abstract
Urothelial carcinoma of bladder is the second most prevalent genitourinary disease. It is a highly heterogeneous disease as it represents a spectrum of neoplasms, including non-muscle invasive bladder cancer (NMIBC), muscle invasive bladder cancer (MIBC) and metastatic lesions. Genome-wide approaches and candidate gene analysis suggest that malignant transformation of the bladder is multifactorial and a multitude of genes are involved in the development of MIBC or NMIBC phenotypes. Wnt signaling is being examined to control and maintain balance between stemness and differentiation in adult stem cell niches. Owing to its participation in urothelial development and maintenance of adult urothelial tissue homeostasis, the components of Wnt signaling are reported as an important diagnostic and prognostic markers as well as novel therapeutic targets. Mutations/epigenetic alterations in the key molecules of Wnt/β-catenin canonical pathway have been linked with tumorigenesis, development of drug resistance and enhanced survival. Present review extends our understanding on the functions of key regulatory molecules of canonical Wnt/β-catenin pathway in urothelial tumorigenesis by inducing cancer stem cell phenotype (UCSCs). UCSCs may be responsible for tumor heterogeneity, high recurrence rates and complex biological behavior of bladder cancer. Therefore, understanding the role of UCSCs and the regulatory mechanisms that are responsible for high relapse rates and metastasis could help to develop pathway inhibitors and augment current therapies. Potential implications in the treatment of urothelial carcinoma of bladder by targeting this pathway primarily in UCSCs as well as in bulk tumor population that are responsible for high relapse rates and metastasis may facilitate potential therapeutic avenues and better prognosis.
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Affiliation(s)
- Minal Garg
- Department of Biochemistry, University of Lucknow, Lucknow 226007, India
| | - Niharika Maurya
- Department of Biochemistry, University of Lucknow, Lucknow 226007, India
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Koukoulaki M, Iatrou C. The role of mycophenolate in the treatment of antineutrophil cytoplasmic antibody-associated vasculitis. World J Nephrol 2019; 8:75-82. [PMID: 31523631 PMCID: PMC6715575 DOI: 10.5527/wjn.v8.i4.75] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 07/09/2019] [Accepted: 07/17/2019] [Indexed: 02/06/2023] Open
Abstract
Mycophenolic acid, the active metabolite for mycophenolate mofetil and mycophenolic sodium, is a strong, noncompetitive, reversible inhibitor of inosine monophosphate dehydrogenase, the key enzyme in de novo synthesis of guanosine nucleotides leading to selective inhibition of lymphocyte proliferation. Mycophenolic acid has been evaluated as induction and remission maintenance agent in the treatment of antineutrophil cytoplasmic antibody-associated vasculitis (AAV). Since the course of disease of AAV usually requires long term immunosuppression, mycophenolate has been explored as a less toxic agent compared to cyclophosphamide and azathioprine. Mycophenolate is a potent immunosuppressive agent in the therapy of AAV, non-inferior to other available drugs with comparable side effect profile. Therefore, it could be a valuable alternative in cases of toxicity with life threatening side effects or intolerance to cyclophosphamide or azathioprine, in cases with high cumulative dose of cyclophosphamide, but also in cases with insufficient response. Several studies have shown a higher relapse rate following discontinuation of mycophenolate or in mycophenolate treated subjects that raises concerns about its usefulness in the treatment of AAV. This review describes the efficacy of mycophenolate in AAV as remission induction agent, as remission maintenance agent, and as therapeutic option in relapsing AAV disease, the relapse rate following discontinuation of mycophenolate, and the adverse events related to mycophenolate treatment.
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Affiliation(s)
- Maria Koukoulaki
- Center for Nephrology “G. Papadakis”, General Hospital of Nikaia – Piraeus “Agios Panteleimon”, Piraeus, Nikaia 18454, Greece
| | - Christos Iatrou
- Center for Nephrology “G. Papadakis”, General Hospital of Nikaia – Piraeus “Agios Panteleimon”, Piraeus, Nikaia 18454, Greece
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Piranavan P, Rajan A, Jindal V, Verma A. A rare presentation of spontaneous atheroembolic renal disease: A case report. World J Nephrol 2019; 8:67-74. [PMID: 31363463 PMCID: PMC6656662 DOI: 10.5527/wjn.v8.i3.67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 04/01/2019] [Accepted: 04/08/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Atheroembolic renal disease (AERD) is caused by occlusion of the small renal arteries from embolized cholesterol crystals arising from ulcerated atherosclerotic plaques. This usually manifests as isolated renal disease or involvement from systemic atheroembolic disease. Here we report a case of AERD that responded well to steroid therapy.
CASE SUMMARY A 62-year-old woman with a history of hypertension and stage IIIa chronic kidney disease was referred for rapidly worsening renal function over a 4-mo period. She complained of swollen legs, dyspnea on exertion, and two episodes of epistaxis about a month prior to admission. She reported no history of invasive vascular procedures, use of radio contrast agents, or treatment with anticoagulants or thrombolytic agents. Urinalysis showed a few red blood cells and granular casts. Serology was positive for cytoplasmic antineutrophil cytoplasmic antibodies (c-ANCA). Non-contrast-enhanced computed tomography of the chest, abdomen, and pelvis showed diffuse atherosclerotic changes in the aortic arch. Thus, c-ANCA-associated vasculitis was suspected, and the patient was started on pulse intravenous methylprednisolone. Her renal biopsy showed evidence of AERD. She was discharged with oral prednisone, and her renal function continued to improve during the initial follow-up.
CONCLUSION In cases of non-vasculitis-associated ANCA, a high degree of clinical suspicion is required to pursue the diagnosis of spontaneous AERD in patients with clinical or radiological evidence of atherosclerotic burden. Although no specific treatment is available, the potential role of statins and steroids requires exploration.
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Affiliation(s)
| | - Ashna Rajan
- Department of Medicine, Saint Vincent Hospital, Worcester, MA 01608, United States
| | - Vishal Jindal
- Department of Medicine, Saint Vincent Hospital, Worcester, MA 01608, United States
| | - Ashish Verma
- Division of Nephrology, Saint Vincent Hospital, Worcester, MA 01608, United States
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Koratala A, Bhattacharya D, Kazory A. Point of care renal ultrasonography for the busy nephrologist: A pictorial review. World J Nephrol 2019; 8:44-58. [PMID: 31363461 PMCID: PMC6656660 DOI: 10.5527/wjn.v8.i3.44] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/22/2019] [Accepted: 03/12/2019] [Indexed: 02/06/2023] [Imported: 08/17/2023] Open
Abstract
The application of bedside ultrasonography in routine clinical practice has dramatically evolved over the last few decades and will likely continue to grow as technological advances lead to enhanced portability and affordability of the equipment. Despite mounting interest, most nephrology fellowship training programs do not offer formal training in renal ultrasonography and there is inertia among practicing nephrologists to adopt this skill as a practice-changing advancement. Lack of familiarity with the topic is considered a key reason for this inertia. Understanding of basic ultrasound physics, instrumentation, principles of optimal image acquisition and interpretation is critical for enhanced efficiency and patient safety while using this tool. Herein, we provide a brief overview of the basic principles of diagnostic renal ultrasonography as well as introduction to common sonographic pathologies encountered in day-to-day nephrology practice with illustrative images.
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Affiliation(s)
- Abhilash Koratala
- Division of Nephrology, Hypertension and Renal Transplantation, University of Florida, Gainesville, FL 32610-0224, United States
| | - Deepti Bhattacharya
- Division of Nephrology, Hypertension and Renal Transplantation, University of Florida, Gainesville, FL 32610-0224, United States
| | - Amir Kazory
- Division of Nephrology, Hypertension and Renal Transplantation, University of Florida, Gainesville, FL 32610-0224, United States
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Koratala A, Dass B, Alquadan KF, Sharma S, Singhania G, Ejaz AA. Static pressures, intra-access blood flow and dynamic Kt/V profiles in the prediction of dialysis access function. World J Nephrol 2019; 8:59-66. [PMID: 31363462 PMCID: PMC6656661 DOI: 10.5527/wjn.v8.i3.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 02/26/2019] [Accepted: 03/27/2019] [Indexed: 02/06/2023] [Imported: 08/17/2023] Open
Abstract
BACKGROUND Hemodialysis machine-generated circuit pressures and clearance profiles are potential predictors of quality assurances. In our practice, we previously we observed that elevated static access pressures were associated with abnormal Kt/V values, high access recirculation and deviation of the Kt/V profile (Abnormal Kt/V profile) from normally expected values (Normal Kt/V profile).
AIM To hypothesize that static or derived access pressures would correlate with direct intra-access blood flow rates and that clearance (Kt/V) profiles would correlate with measured Kt/V values.
METHODS Static access pressures, real-time adequacy of dialysis and intra-access blood flow were investigated in end stage renal disease patients undergoing hemodialysis. Wilcoxon-Mann-Whitney test, chi-square test or Fisher’s exact test was used to investigate differences between the groups; Spearman’s rank correlation test to investigate relationships between static pressures, direct intra-access pressures and Kt/V profiles; and multinomial logistic regression models to identify the independent effect of selected variables on Kt/V profiles. Odds ratio were calculated to measure the association between the variables and Kt/V profiles.
RESULTS One hundred and seven patients were included for analysis. There were no significant differences between genders, and types of vascular access between the normal vs. abnormal clearance (Kt/V) profile groups. No significant correlation could be demonstrated between static access pressures and Kt/V profiles, static access pressures and intra-access blood flow, intra-access blood flow and Kt/V profiles, measured Kt/V and Kt/V profiles or recirculation and Kt/V profiles.
CONCLUSION In this study utilizing measured versus estimated data, we could not validate that dialysis machine generated elevated static pressures predict intra-access blood flow disturbances or that abnormal Kt/V profiles predict access recirculation or inadequate dialysis. These parameters, though useful estimates, cannot be accepted as quality assurance for dialysis adequacy or access function without further evidences.
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Affiliation(s)
- Abhilash Koratala
- Division of Nephrology, Hypertension and Transplantation, University of Florida, Gainesville, FL 32610, United States
| | - Bhagwan Dass
- Division of Nephrology, Hypertension and Transplantation, University of Florida, Gainesville, FL 32610, United States
| | - Kawther F Alquadan
- Division of Nephrology, Hypertension and Transplantation, University of Florida, Gainesville, FL 32610, United States
| | - Simrun Sharma
- Division of Nephrology, Hypertension and Transplantation, University of Florida, Gainesville, FL 32610, United States
| | - Girish Singhania
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, UT 84112, United States
| | - Abutaleb A Ejaz
- Division of Nephrology, Hypertension and Transplantation, University of Florida, Gainesville, FL 32610, United States
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Piranavan P, Rajan A, Jindal V, Verma A. A rare presentation of spontaneous atheroembolic renal disease: A case report. World J Nephrol 2019. [DOI: 10.5527/wjcc.v8.i3.67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] [Imported: 08/17/2023] Open
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Koratala A, Dass B, Alquadan KF, Sharma S, Singhania G, Ejaz AA. Static pressures, intra-access blood flow and dynamic Kt/V profiles in the prediction of dialysis access function. World J Nephrol 2019. [DOI: 10.5527/wjcc.v8.i3.59] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Kaewput W, Thongprayoon C, Rangsin R, Ruangkanchanasetr P, Mao MA, Cheungpasitporn W. Associations of renal function with diabetic retinopathy and visual impairment in type 2 diabetes: A multicenter nationwide cross-sectional study. World J Nephrol 2019; 8:33-43. [PMID: 30815379 PMCID: PMC6388308 DOI: 10.5527/wjn.v8.i2.33] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/07/2019] [Accepted: 01/28/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Diabetic retinopathy (DR) separately has been noted as a major public health problem worldwide as well. Currently, many studies have demonstrated an association between diabetic nephropathy and DR in type 1 diabetes mellitus (T1DM) patients, but this association is less strong in T2DM. The evidence for an association between renal function and DR and visual impairment among T2DM patients is limited, particularly in the Asian population.
AIM To assess the association between glomerular filtration rate (GFR) and DR, severe DR, and severe visual impairment among T2DM patients in Thailand.
METHODS We conducted a nationwide cross-sectional study based on the DM/HT study of the Medical Research Network of the Consortium of Thai Medical Schools. This study evaluated adult T2DM patients from 831 public hospitals in Thailand in the year 2013. GFR was categorized into ≥ 90, 60-89, 30-59 and < 30 mL/min/1.73 m2. The association between GFR and DR, severe DR, and severe visual impairment were assessed using multivariate logistic regression.
RESULTS A total of 13192 T2DM patients with available GFR were included in the analysis. The mean GFR was 66.9 ± 25.8 mL/min/1.73 m2. The prevalence of DR, proliferative DR, diabetic macular edema, and severe visual impairment were 12.4%, 1.8%, 0.2%, and 2.1%, respectively. Patients with GFR of 60-89, 30-59 and < 30 mL/min/1.73 m2 were significantly associated with increased DR and severe DR when compared with patients with GFR of ≥ 90 mL/min/1.73 m2. In addition, increased severe visual impairment was associated with GFR 30-59 and < 30 mL/min/1.73 m2.
CONCLUSION Decreased GFR was independently associated with increased DR, severe DR, and severe visual impairment. GFR should be monitored in diabetic patients for DR awareness and prevention.
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Affiliation(s)
- Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, United States
| | - Ram Rangsin
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Prajej Ruangkanchanasetr
- Department of Medicine, Phramongkutklao Hospital and College of Medicine, Bangkok 10400, Thailand
| | - Michael A Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, United States
| | - Wisit Cheungpasitporn
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, Jackson, MS 39216, United States
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Asim M, Alkadi MM, Asim H, Ghaffar A. Dehydration and volume depletion: How to handle the misconceptions. World J Nephrol 2019; 8:23-32. [PMID: 30705869 PMCID: PMC6354080 DOI: 10.5527/wjn.v8.i1.23] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 11/02/2018] [Accepted: 01/04/2019] [Indexed: 02/06/2023] Open
Abstract
Dehydration and volume depletion describe two distinct body fluid deficit disorders with differing pathophysiology, clinical manifestations and treatment approaches. However, the two are often confused or equated with each other. Here, we address a number of commonly encountered misconceptions about body-fluid deficit disorders, analyse their origins and propose approaches to overcome them.
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Affiliation(s)
- Muhammad Asim
- Hamad General Hospital, Hamad Medical Corporation and Weill Cornell Medicine-Qatar, Doha 3050, Qatar
| | - Mohamad M Alkadi
- Hamad General Hospital, Hamad Medical Corporation and Weill Cornell Medicine-Qatar, Doha 3050, Qatar
| | - Hania Asim
- Birmingham City Hospital, Dudley Road, Birmingham B18 7QH, United Kingdom
| | - Adil Ghaffar
- Saint Vincent Hospital, Worcester, MA 01608, United States
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Singh S, Sharma R, Kumari M, Tiwari S. Insulin receptors in the kidneys in health and disease. World J Nephrol 2019; 8:11-22. [PMID: 30705868 PMCID: PMC6354081 DOI: 10.5527/wjn.v8.i1.11] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/15/2018] [Accepted: 12/10/2018] [Indexed: 02/06/2023] Open
Abstract
Insulin is an important hormone that affects various metabolic processes, including kidney function. Impairment in insulin’s action leads to insulin resistance in the target tissue. Besides defects in post-receptor insulin signaling, impairment at the receptor level could significantly affect insulin sensitivity of the target tissue. The kidney is a known target of insulin; however, whether the kidney develops “insulin resistance” is debatable. Regulation of the insulin receptor (IR) expression and its function is very well studied in major metabolic tissues like liver, skeletal muscles, and adipose tissue. The physiological relevance of IRs in the kidney has recently begun to be clarified. The credit goes to studies that showed a wide distribution of IR throughout the nephron segments and their reduced expression in the insulin resistance state. Moreover, altered renal and systemic metabolism observed in mice with targeted deletion of the IR from various epithelial cells of the kidney has strengthened this proposition. In this review, we recapitulate the crucial findings from literature that have expanded our knowledge regarding the significance of the renal IR in normal- and insulin-resistance states.
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Affiliation(s)
- Sarojini Singh
- Department of Molecular Medicine and Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Rajni Sharma
- Department of Molecular Medicine and Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Manju Kumari
- Department of Molecular Medicine and Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Swasti Tiwari
- Department of Molecular Medicine and Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
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Jain D, Haddad DB, Goel N. Choice of dialysis modality prior to kidney transplantation: Does it matter? World J Nephrol 2019; 8:1-10. [PMID: 30705867 PMCID: PMC6354079 DOI: 10.5527/wjn.v8.i1.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/05/2018] [Accepted: 01/09/2019] [Indexed: 02/06/2023] Open
Abstract
The population of patients with end stage renal disease (ESRD) is increasing, lengthening waiting lists for kidney transplantation. Majority of the patients are not able to receive a kidney transplant in timely manner even though it is well established that patient survival and quality of life after kidney transplantation is far better when compared to being on dialysis. A large number of patients who desire a kidney transplant ultimately end up needing some form of dialysis therapy. Most of incident ESRD patients choose hemodialysis (HD) over peritoneal dialysis (PD) as the modality of choice in the United States, even though studies have favored PD as a better choice of pre-transplant dialysis modality than HD. PD is largely underutilized in the United States due to variety of reasons. As a part of the decision making process, patients are often educated how the choice regarding modality of dialysis would fit into their life but it is not clear and not usually discussed, how it can affect eventual kidney transplantation in the future. In this article we would like to discuss ESRD demographics and outcomes, modality of dialysis and kidney transplant related events. We have summarized the data comparing PD and HD as the modality of dialysis and its impact on allograft and recipient outcomes after kidney transplantation.
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Affiliation(s)
- Deepika Jain
- Nephrology and Internal Medicine, New Jersey Kidney Care, Jersey city, NJ 07305, United States
| | - Danny B Haddad
- Nephrology and Internal Medicine, New Jersey Kidney Care, Jersey city, NJ 07305, United States
- Department of Internal Medicine, Division of Nephrology, RWJ-Jersey City Medical Center, Jersey city, NJ 07305, United States
| | - Narender Goel
- Nephrology and Internal Medicine, New Jersey Kidney Care, Jersey city, NJ 07305, United States
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69
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Kim SH, Kwon WA, Joung JY, Seo HK, Lee KH, Chung J. Clear cell papillary renal cell carcinoma: A case report and review of the literature. World J Nephrol 2018; 7:155-160. [PMID: 30596034 PMCID: PMC6305527 DOI: 10.5527/wjn.v7.i8.155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/29/2018] [Accepted: 11/08/2018] [Indexed: 02/06/2023] Open
Abstract
Clear cell papillary renal cell carcinoma (ccpRCC) was recently established as a distinct type of epithelial neoplasm by the International Society of Urological Pathology Vancouver Classification of Renal Neoplasia. Here, we report a case of partial nephrectomy for a ccpRCC detected during the routine follow-up of a previously treated liposarcoma in a 70-year-old male patient. The patient was referred to the urology department for a right-sided renal mass (size: 2 cm) detected during routine annual imaging follow-up for a malignant right inguinal fibrous histocytoma and liposarcoma that had been diagnosed 6 and 4 years earlier, respectively, and treated with surgery and adjuvant radiation therapy. Following partial nephrectomy, the renal mass was pathologically diagnosed as ccpRCC, and immunohistochemistry revealed carbonic anhydrase 9 (CA9) expression. No recurrences or metastases were detected on follow-up imaging for 6 months. This is the first report of partial nephrectomy for incidentally discovered CA9-positive ccpRCC.
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Affiliation(s)
- Sung Han Kim
- Department of Urology, Center for Prostate Cancer, National Cancer Center, Goyang 410-769, South Korea
| | - Whi-An Kwon
- Department of Urology, Center for Prostate Cancer, National Cancer Center, Goyang 410-769, South Korea
| | - Jae Young Joung
- Department of Urology, Center for Prostate Cancer, National Cancer Center, Goyang 410-769, South Korea
| | - Ho Kyung Seo
- Department of Urology, Center for Prostate Cancer, National Cancer Center, Goyang 410-769, South Korea
| | - Kang Hyun Lee
- Department of Urology, Center for Prostate Cancer, National Cancer Center, Goyang 410-769, South Korea
| | - Jinsoo Chung
- Department of Urology, Center for Prostate Cancer, National Cancer Center, Goyang 410-769, South Korea
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70
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Krishnappa V, Hein W, DelloStritto D, Gupta M, Raina R. Palliative care for acute kidney injury patients in the intensive care unit. World J Nephrol 2018; 7:148-154. [PMID: 30596033 PMCID: PMC6305526 DOI: 10.5527/wjn.v7.i8.148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/25/2018] [Accepted: 12/05/2018] [Indexed: 02/06/2023] Open
Abstract
Patients with acute kidney injury (AKI) in the intensive care unit (ICU) are often suitable for palliative care due to the high symptom burden. The role of palliative medicine in this patient population is not well defined and there is a lack of established guidelines to address this issue. Because of this, patients in the ICU with AKI deprived of the most comprehensive or appropriate care. The reasons for this are multifactorial including lack of palliative care training among nephrologists. However, palliative care in these patients can help alleviate symptoms, improve quality of life, and decrease suffering. Palliative care physicians can determine the appropriateness and model of palliative care. In addition to shared decision-making, advance directives should be established with patients early on, with specific instructions regarding dialysis, and those advance directives should be respected.
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Affiliation(s)
- Vinod Krishnappa
- Northeast Ohio Medical University, Rootstown, OH 44272, United States
- Department of Nephrology, Cleveland Clinic Akron General/Akron Nephrology Associates, Akron, OH 44302, United States
| | - William Hein
- Northeast Ohio Medical University, Rootstown, OH 44272, United States
| | | | - Mona Gupta
- Department of Hospice and Palliative Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, United States
| | - Rupesh Raina
- Department of Nephrology, Cleveland Clinic Akron General/Akron Nephrology Associates and Akron Children's Hospital, Akron, OH 44307, United States
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71
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Shin S, Srivastava A, Alli NA, Bandyopadhyay BC. Confounding risk factors and preventative measures driving nephrolithiasis global makeup. World J Nephrol 2018; 7:129-142. [PMID: 30510912 PMCID: PMC6259033 DOI: 10.5527/wjn.v7.i7.129] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/10/2018] [Accepted: 10/10/2018] [Indexed: 02/06/2023] Open
Abstract
Nephrolithiasis is increasing in developed and developing countries at an alarming rate. With the global spike in kidney stone diseases, it is crucial to determine what risk factors are influencing the current global landscape for kidney stones. Our aims for this review are: to identity and analyze the four categories of risk factors in contributing to the global scale of stone formation: lifestyle, genetics, diet, and environment; and discuss preventative measures for kidney stone formation. We also performed data search through the published scientific literature, i.e., PubMed® and found that there is a significant link between lifestyle and obesity with cases of calcium stones. Food and Agriculture Organization of the United Nations and World Health Organization factor indicators for dietary intake and obesity, along with climate data were used to create the projected total risk world map model for nephrolithiasis risk. Complete global analyses of nephrolithiasis deplete of generalizations is nearly insurmountable due to limited sources of medical and demographic information, but we hope this review can provide further elucidation into confounding risk factors and preventative measures for global nephrolithiasis analysis.
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Affiliation(s)
- Samuel Shin
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, DC 20422, United States
| | - Aneil Srivastava
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, DC 20422, United States
- George Washington University, Washington, DC 20052, United States
| | - Nazira A Alli
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, DC 20422, United States
| | - Bidhan C Bandyopadhyay
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, DC 20422, United States
- George Washington University, Washington, DC 20052, United States
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Chothia MY, Davids MR, Bhikoo R. Awakening the sleeping kidney in a dialysis-dependent patient with fibromuscular dysplasia: A case report and review of literature. World J Nephrol 2018; 7:143-147. [PMID: 30510913 PMCID: PMC6259034 DOI: 10.5527/wjn.v7.i7.143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/06/2018] [Accepted: 10/10/2018] [Indexed: 02/06/2023] Open
Abstract
Renal artery stenosis is a common cause of secondary hypertension and chronic kidney disease. We present here a case of fibromuscular dysplasia that was treated with surgical revascularization, resulting in recovery of kidney function with eventual cessation of chronic dialysis. The case involves a 25-year-old female with coincidentally discovered hypertension, who underwent further investigations revealing a diagnosis of renal artery stenosis due to fibromuscular dysplasia. She subsequently developed two episodes of malignant hypertension, with flash pulmonary oedema and worsening renal failure that resulted in dialysis dependence. After evidence was obtained that the right kidney was still viable, a revascularization procedure was performed, improving blood pressure control and restoring kidney function, thereby allowing dialysis to be stopped. This case highlights the importance of evaluating patients with renal artery stenosis for revascularization before committing them to a life of chronic dialysis.
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Affiliation(s)
- Mogamat-Yazied Chothia
- Renal Unit, Tygerberg Hospital, Cape Town 7505, South Africa
- Division of Nephrology, Department of Medicine, Tygerberg Hospital and Stellenbosch University, Cape Town 7505, South Africa
| | - Mogamat Razeen Davids
- Division of Nephrology, Department of Medicine, Tygerberg Hospital and Stellenbosch University, Cape Town 7505, South Africa
| | - Raisa Bhikoo
- Division of Nephrology, Department of Medicine, Tygerberg Hospital and Stellenbosch University, Cape Town 7505, South Africa
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73
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Ahmed AR, Lappin D. Oral alkali therapy and the management of metabolic acidosis of chronic kidney disease: A narrative literature review. World J Nephrol 2018; 7:117-122. [PMID: 30324086 PMCID: PMC6181870 DOI: 10.5527/wjn.v7.i6.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 08/05/2018] [Accepted: 08/30/2018] [Indexed: 02/06/2023] Open
Abstract
Chronic metabolic acidosis is a common complication seen in advanced chronic kidney disease (CKD). There is currently no consensus on its management in the Republic of Ireland. Recent trials have suggested that appropriate active management of metabolic acidosis through oral alkali therapy and modified diet can have a deterring impact on CKD progression. The potential benefits of treatment include preservation of bone health and improvement in muscle function; however, present data is limited. This review highlights the current evidence, available primarily from randomised control trials (RCTs) over the last decade, in managing the metabolic acidosis of CKD and outlines ongoing RCTs that are promising. An economic perspective is also briefly discussed to support decision-making.
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Affiliation(s)
- Adeel Rafi Ahmed
- Department of Nephrology, University Hospital Galway, Galway H91YR1, Ireland
| | - David Lappin
- Department of Nephrology, University Hospital Galway, Galway H91YR1, Ireland
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Stavroulopoulos A, Aresti V, Papadopoulos C, Nennes P, Metaxaki P, Galinas A. Bicarbonate levels in hemodialysis patients switching from lanthanum carbonate to sucroferric oxyhydroxide. World J Nephrol 2018; 7:123-128. [PMID: 30324087 PMCID: PMC6181871 DOI: 10.5527/wjn.v7.i6.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 08/02/2018] [Accepted: 08/30/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To examine possible alterations in acid-base parameters in patients switching from lanthanum carbonate (LanC) to sucroferric oxyhydroxide (SFOH).
METHODS Fifteen stable hemodialysis patients were switched from LanC to SFOH. Only nine continued on SFOH, three returned to LanC and the other three switched to sevelamer carbonate. The later six patients served as a control group to the SFOH group of nine patients. Blood was sampled on the 3-d and the last 2-d interval of the week prior to switching and six weeks after. Bicarbonate levels (HCO3-), pH, pO2, pCO2 were measured, and the mean of the two measurements (3-d and 2-d interval) was calculated.
RESULTS Comparing pre-switching to post-switching measurements in the SFOH group, no statistically significant differences were found in any of the parameters studied. The mean pre-switching HCO3- was 22.41 ± 1.66 mmol/L and the mean post-switching was 22.62 ± 2.25 mmol/L (P = 0.889). Respectively, the mean pH= 7.38 ± 0.03 vs 7.39 ± 0.03 (P = 0.635), mean pCO2= 38.41 ± 3.29 vs 38.37 ± 3.62 mmHg (P = 0.767), and Phosphate = 1.57 ± 0.27 vs 1.36 ± 0.38mmol/L (P = 0.214). There were not any significant differences when we performed the same analyses in the control group or between the SFOH group and control group. No correlations were found, either between pre-switching LanC daily dose or between post-switching daily dose of the new binder and the measured parameters.
CONCLUSION In our small study, switching from LanC to SFOH did not have any significant effect on blood bicarbonate levels and gas analysis, indicating that there is no need to change hemodialysis prescription regarding these parameters.
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Affiliation(s)
| | - Vasiliki Aresti
- Department of Nephrology, IASIO Hospital, General Clinic of Kallithea, Athens 17676, Greece
| | | | - Panagiotis Nennes
- Department of Nephrology, IASIO Hospital, General Clinic of Kallithea, Athens 17676, Greece
| | - Polixeni Metaxaki
- Department of Nephrology, IASIO Hospital, General Clinic of Kallithea, Athens 17676, Greece
| | - Anastasios Galinas
- Department of Nephrology, IASIO Hospital, General Clinic of Kallithea, Athens 17676, Greece
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75
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Patil A, Jr WES, Pan CG, Avner ED. Unique interstitial miRNA signature drives fibrosis in a murine model of autosomal dominant polycystic kidney disease. World J Nephrol 2018; 7:108-116. [PMID: 30211029 PMCID: PMC6134266 DOI: 10.5527/wjn.v7.i5.108] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/06/2018] [Accepted: 08/01/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To delineate changes in miRNA expression localized to the peri-cystic local microenvironment (PLM) in an orthologous mouse model of autosomal dominant polycystic kidney disease (ADPKD) (mcwPkd1(nl/nl)).
METHODS We profiled miRNA expression in the whole kidney and laser captured microdissection (LCM) samples from PLM in mcwPkd1(nl/nl) kidneys with Qiagen miScript 384 HC miRNA PCR arrays. The three times points used are: (1) post-natal (PN) day 21, before the development of trichrome-positive areas; (2) PN28, the earliest sign of trichrome staining; and (3) PN42 following the development of progressive fibrosis. PN21 served as appropriate controls and as the reference time point for comparison of miRNA expression profiles.
RESULTS LCM samples revealed three temporally upregulated miRNAs [2 to 2.75-fold at PN28 and 2.5 to 4-fold (P ≤ 0.05) at PN42] and four temporally downregulated miRNAs [2 to 2.75 fold at PN28 and 2.75 to 5-fold (P ≤ 0.05) at PN42]. Expression of twenty-six miRNAs showed no change until PN42 [six decreased (2.25 to 3.5-fold) (P ≤ 0.05) and 20 increased (2 to 4-fold) (P ≤ 0.05)]. Many critical miRNA changes seen in the LCM samples from PLM were not seen in the contralateral whole kidney.
CONCLUSION Precise sampling with LCM identifies miRNA changes that occur with the initiation and progression of renal interstitial fibrosis (RIF). Identification of the target proteins regulated by these miRNAs will provide new insight into the process of fibrosis and identify unique therapeutic targets to prevent or slow the development and progression of RIF in ADPKD.
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Affiliation(s)
- Ameya Patil
- Children’s Research Institute; Children’s’ Hospital Health System of Wisconsin and the Medical College of Wisconsin, Milwaukee, WI 53226, United States
| | - William E Sweeney Jr
- Children’s Research Institute; Children’s’ Hospital Health System of Wisconsin and the Medical College of Wisconsin, Milwaukee, WI 53226, United States
| | - Cynthia G Pan
- Children’s Research Institute; Children’s’ Hospital Health System of Wisconsin and the Medical College of Wisconsin, Milwaukee, WI 53226, United States
| | - Ellis D Avner
- Children’s Research Institute; Children’s’ Hospital Health System of Wisconsin and the Medical College of Wisconsin, Milwaukee, WI 53226, United States
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76
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Paka P, Huang B, Duan B, Li JS, Zhou P, Paka L, Yamin MA, Friedman SL, Goldberg ID, Narayan P. A small molecule fibrokinase inhibitor in a model of fibropolycystic hepatorenal disease. World J Nephrol 2018; 7:96-107. [PMID: 30211028 PMCID: PMC6134267 DOI: 10.5527/wjn.v7.i5.96] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 08/03/2018] [Accepted: 08/11/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the novel platelet-derived growth factor receptor and vascular endothelial growth factor receptor dual kinase inhibitor ANG3070 in a polycystic kidney disease-congenital hepatic fibrosis model.
METHODS At 6 wk of age, PCK rats were randomized to vehicle or ANG3070 for 4 wk. At 10 wk, 24 h urine and left kidneys were collected and rats were continued on treatment for 4 wk. At 14 wk, 24 h urine was collected, rats were sacrificed, and liver and right kidneys were collected for histological evaluation. For Western blot studies, PCK rats were treated with vehicle or ANG3070 for 7 d and sacrificed approximately 30 min after the last treatments.
RESULTS Compared to the wild-type cohort, the PCK kidney (Vehicle cohort) exhibited a marked increase in kidney and liver mass, hepato-renal cystic volume, hepato-renal fibrosis and hepato-renal injury biomarkers. Intervention with ANG3070 in PCK rats decreased kidney weight, reduced renal cystic volume and reduced total kidney hydroxyproline, indicating significantly reduced rental interstitial fibrosis compared to the PCK-Vehicle cohort. ANG3070 treatment also mitigated several markers of kidney injury, including urinary neutrophil gelatinase-associated lipocalin, kidney injury molecule-1, cystatin C and interleukin-18 levels. In addition, this treatment attenuated key indices of renal dysfunction, including proteinuria, albuminuria and serum blood urea nitrogen and creatinine, and significantly improved renal function compared to the PCK-Vehicle cohort. ANG3070 treatment also significantly decreased liver enlargement, hepatic lesions, and liver fibrosis, and mitigated liver dysfunction compared to the PCK-Vehicle cohort.
CONCLUSION These results suggest that ANG3070 has the potential to slow disease, and may serve as a bridge toward hepato-renal transplantation in patients with fibropolycystic disease.
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Affiliation(s)
- Prani Paka
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Brian Huang
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Bin Duan
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Jing-Song Li
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Ping Zhou
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Latha Paka
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Michael A Yamin
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Scott L Friedman
- Icahn School of Medicine, 1 Gustave L. Levy Place, New York, NY 10029, United States
| | - Itzhak D Goldberg
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
| | - Prakash Narayan
- Department of Research and Development, Angion Biomedica Corp., Uniondale, NY 11553, United States
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Sapam R, Waikhom R. Role of narrow band ultra violet radiation as an add-on therapy in peritoneal dialysis patients with refractory uremic pruritus. World J Nephrol 2018; 7:84-89. [PMID: 30090706 PMCID: PMC6081389 DOI: 10.5527/wjn.v7.i4.84] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/26/2018] [Accepted: 06/28/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To assess the role of narrow band ultraviolet B (UVB) as a treatment option in peritoneal dialysis patients with refractory uremic pruritus.
METHODS In this retrospective study, 29 adult patients with end stage renal failure on peritoneal dialysis, and who had refractory uremic pruritus, were given narrow band UVB radiation as an add-on therapy to standard care for a duration of 12 wk. The response to the pruritus was assessed both weekly and at the end of the study period using a visual analogue score (VAS).
RESULTS The average VAS score at the end of the study was 3.14 ± 1.59, which was significant compared to the baseline value of 7.75 ± 1.02 (P < 0.05). Improvements in symptoms were noted in 19 out of 21 (90.4%) patients. However, relapse occurred in six out of the 19 patients who responded. The dropout rate was high during the study period (33.3%).
CONCLUSION Narrow band UVB is effective as an add-on therapy in peritoneal dialysis patients with refractory uremic pruritus. However, the present regime is cumbersome and patient compliance is poor.
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Affiliation(s)
- Ranjeeta Sapam
- Department of Dermatology Jawaharlal Nehru Institute of Medical Sciences, Porompat 795005, India
| | - Rajesh Waikhom
- Department of Nephrology, Jawaharlal Nehru Institute of Medical Sciences, Porompat 795005, India
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Goto D, Ohashi N, Takeda A, Fujigaki Y, Shimizu A, Yasuda H, Ohishi K. Case of human immunodeficiency virus infection presenting as a tip variant of focal segmental glomerulosclerosis: A case report and review of the literature. World J Nephrol 2018; 7:90-95. [PMID: 30090707 PMCID: PMC6081390 DOI: 10.5527/wjn.v7.i4.90] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/28/2018] [Accepted: 06/30/2018] [Indexed: 02/06/2023] Open
Abstract
The incidence of the collapsing variant of focal segmental glomerulosclerosis (FSGS) as a human immunodeficiency virus (HIV)-associated nephropathy has reduced since the introduction of antiretroviral therapy (ART). However, the incidence of other variants of FSGS, except for the collapsing variant, is increasing, and its therapeutic strategies remain uncertain. A 60-year-old HIV infected man in remission with ART was admitted for progressive renal insufficiency and nephrotic-ranged proteinuria. Renal biopsy revealed a tip variant of FSGS and his clinical manifestations resolved with corticosteroid therapy. HIV infected patients might develop non-collapsing FSGS, including tip variant of FSGS and corticosteroid therapy might be effective for them. A renal biopsy might be essential to determine the renal histology and to decide on corticosteroid therapy.
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Affiliation(s)
- Daiki Goto
- Internal Medicine 1, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Naro Ohashi
- Internal Medicine 1, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Asumi Takeda
- Division of Nephrology, Hamamatsu Medical Center, Hamamatsu 432-8580, Japan
| | - Yoshihide Fujigaki
- Department of Internal Medicine, Teikyo University School of Medicine, Tokyo 173-8605, Japan
| | - Akira Shimizu
- Department of Pathology, Nihon University School of Medicine, Tokyo 113-8602, Japan
| | - Hideo Yasuda
- Internal Medicine 1, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Kazuhisa Ohishi
- Division of Nephrology, Hamamatsu Medical Center, Hamamatsu 432-8580, Japan
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Salvadori M, Tsalouchos A. Antineutrophil cytoplasmic antibody associated vasculitides with renal involvement: Open challenges in the remission induction therapy. World J Nephrol 2018; 7:71-83. [PMID: 29736379 PMCID: PMC5937030 DOI: 10.5527/wjn.v7.i3.71] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/12/2018] [Accepted: 04/18/2018] [Indexed: 02/06/2023] Open
Abstract
Renal involvement with rapidly progressive glomerulonephritis is a common manifestation of antineutrophil cytoplasmic antibody (ANCA) associated vasculitides, which is characterized by end-stage renal disease and high mortality rates in untreated and/or late referral patients. The long-term renal survival has improved dramatically since the addition of cyclophosphamide (CYC) and recently of rituximab (RTX) in association with corticosteroids in the remission induction therapeutic regimens. However, renal prognosis remains unfavorable for many patients and the mortality rate is still significantly high. In this review, we analyze the open challenges to be addressed to optimize the induction remission therapy, principally in patients with advanced kidney failure. This concern the first-line therapy (CYC or RTX) based on different parameters (estimated glomerular filtration rate at baseline, new or relapsed disease, ANCA specificity, tissue injury, safety), the role of plasma exchange and the role of new therapies. Indeed, we discuss future perspectives in induction remission therapy by reporting recent advances in new targeted therapies with particular reference to avacopan, an orally administered selective C5a receptor inhibitor.
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Affiliation(s)
- Maurizio Salvadori
- Department of Nephrology and Renal Transplantation, Careggi University Hospital, Florence 50139, Italy
| | - Aris Tsalouchos
- Department of Nephrology and Dialysis, Saints Cosmas and Damian Hospital, Pescia 51017, Italy
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Tasneem M, Mannix C, Wong A, Zhang J, Rangan G. Is serum copeptin a modifiable biomarker in autosomal dominant polycystic kidney disease? World J Nephrol 2018; 7:51-57. [PMID: 29527508 PMCID: PMC5838414 DOI: 10.5527/wjn.v7.i2.51] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/29/2018] [Accepted: 02/28/2018] [Indexed: 02/06/2023] Open
Abstract
The availability of disease-modifying drugs for the management of autosomal dominant polycystic kidney disease (ADPKD) has accelerated the need to accurately predict renal prognosis and/or treatment response in this condition. Arginine vasopressin (AVP) is a critical determinant of postnatal kidney cyst growth in ADPKD. Copeptin (the C-terminal glycoprotein of the precursor AVP peptide) is an accurate surrogate marker of AVP release that is stable and easily measured by immunoassay. Cohort studies show that serum copeptin is correlated with disease severity in ADPKD, and predicts future renal events [decline in renal function and increase in total kidney volume (TKV)]. However, serum copeptin is strongly correlated with creatinine, and its additional value as a prognostic biomarker over estimated glomerular filtration rate and TKV is not certain. It has also been suggested that copeptin could be a predictive biomarker to select ADPKD patients who are most likely to benefit from AVP-modifying therapies, but prospective data to validate this assumption are required. In this regard, long-term randomised clinical trials evaluating the effect of prescribed water intake on renal cyst growth may contribute to addressing this hypothesis. In conclusion, although serum copeptin is aligned with the basic pathogenesis of ADPKD, further rigorous studies are needed to define if it will contribute to enabling the delivery of personalised care in ADPKD.
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Affiliation(s)
- Moomal Tasneem
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, the University of Sydney, Sydney 2145, Australia
- Department of Renal Medicine, Westmead Hospital, Sydney 2145, Australia
| | - Carly Mannix
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, the University of Sydney, Sydney 2145, Australia
- Department of Renal Medicine, Westmead Hospital, Sydney 2145, Australia
| | - Annette Wong
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, the University of Sydney, Sydney 2145, Australia
- Department of Renal Medicine, Westmead Hospital, Sydney 2145, Australia
| | - Jennifer Zhang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, the University of Sydney, Sydney 2145, Australia
- Department of Renal Medicine, Westmead Hospital, Sydney 2145, Australia
| | - Gopala Rangan
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, the University of Sydney, Sydney 2145, Australia
- Department of Renal Medicine, Westmead Hospital, Sydney 2145, Australia
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81
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Skalická K, Hrčková G, Vaská A, Baranyaiová Á, Kovács L. Genetic defects in ciliary genes in autosomal dominant polycystic kidney disease. World J Nephrol 2018; 7:65-70. [PMID: 29527510 PMCID: PMC5838416 DOI: 10.5527/wjn.v7.i2.65] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 12/31/2017] [Accepted: 02/05/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the genetic defects of ciliary genes causing the loss of primary cilium in autosomal dominant polycystic kidney disease (ADPKD).
METHODS We analyzed 191 structural and functional genes of the primary cilium using next-generation sequencing analysis. We analyzed the kidney samples, which were obtained from 7 patients with ADPKD who underwent nephrectomy. Each sample contained polycystic kidney tissue and matched normal kidney tissue.
RESULTS In our study, we identified genetic defects in the 5 to 15 genes in each ADPKD sample. The most frequently identified defects were found in genes encoding centrosomal proteins (PCM1, ODF2, HTT and CEP89) and kinesin family member 19 (KIF19), which are important for ciliogenesis. In addition, pathogenic mutations in the PCM1 and KIF19 genes were found in all ADPKD samples. Interestingly, mutations in the genes encoding the intraflagellar transport proteins, which are the basis of animal models of ADPKD, were only rarely detected.
CONCLUSION The results of our study revealed the actual state of structural ciliary genes in human ADPKD tissues and provided valuable indications for further research.
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Affiliation(s)
- Katarína Skalická
- Laboratory of Clinical and Molecular Genetics, Department of Paediatrics, Faculty of Medicine, Comenius University and University Children’s Hospital, Bratislava 83340, Slovakia
| | - Gabriela Hrčková
- Laboratory of Clinical and Molecular Genetics, Department of Paediatrics, Faculty of Medicine, Comenius University and University Children’s Hospital, Bratislava 83340, Slovakia
| | - Anita Vaská
- Laboratory of Clinical and Molecular Genetics, Department of Paediatrics, Faculty of Medicine, Comenius University and University Children’s Hospital, Bratislava 83340, Slovakia
| | - Ágnes Baranyaiová
- Laboratory of Clinical and Molecular Genetics, Department of Paediatrics, Faculty of Medicine, Comenius University and University Children’s Hospital, Bratislava 83340, Slovakia
| | - László Kovács
- Laboratory of Clinical and Molecular Genetics, Department of Paediatrics, Faculty of Medicine, Comenius University and University Children’s Hospital, Bratislava 83340, Slovakia
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Yong TY, Khow KSF. Diabetic muscle infarction in end-stage renal disease: A scoping review on epidemiology, diagnosis and treatment. World J Nephrol 2018; 7:58-64. [PMID: 29527509 PMCID: PMC5838415 DOI: 10.5527/wjn.v7.i2.58] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/25/2017] [Accepted: 01/24/2018] [Indexed: 02/07/2023] Open
Abstract
Diabetic muscle infarction (DMI) refers to spontaneous ischemic necrosis of skeletal muscle among people with diabetes mellitus, unrelated to arterial occlusion. People with DMI may have coexisting end-stage renal disease (ESRD) but little is known about its epidemiology and clinical outcomes in this setting. This scoping review seeks to investigate the characteristics, clinical features, diagnostic evaluation, management and outcomes of DMI among people with ESRD. Electronic database (PubMed/MEDLINE, CINAHL, SCOPUS and EMBASE) searches were conducted for (“diabetic muscle infarction” or “diabetic myonecrosis”) and (“chronic kidney disease” or “renal impairment” or “dialysis” or “renal replacement therapy” or “kidney transplant”) from January 1980 to June 2017. Relevant cases from reviewed bibliographies in reports retrieved were also included. Data were extracted in a standardized form. A total of 24 publications with 41 patients who have ESRD were included. The mean age at the time of presentation with DMI was 44.2 years. Type 2 diabetes was present in 53.7% of patients while type 1 in 41.5%. In this cohort, 60.1% were receiving hemodialysis, 21% on peritoneal dialysis and 12.2% had kidney transplantation. The proximal lower limb musculature was the most commonly affected site. Muscle pain and swelling were the most frequent manifestation on presentation. Magnetic resonance imaging (MRI) provided the most specific findings for DMI. Laboratory investigation findings are usually non-specific. Non-surgical therapy is usually used in the management of DMI. Short-term prognosis of DMI is good but recurrence occurred in 43.9%. DMI is an uncommon complication in patients with diabetes mellitus, including those affected by ESRD. In comparison with unselected patients with DMI, the characteristics and outcomes of those with ESRD are generally similar. DMI may also occur in kidney transplant recipients, including pancreas-kidney transplantation. MRI is the most useful diagnostic investigation. Non-surgical treatment involving analgesia, optimization of glycemic control and initial bed rest can help to improve recovery rate. However, recurrence of DMI is relatively frequent.
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Affiliation(s)
- Tuck Yean Yong
- Internal Medicine, Flinders Private Hospital, Bedford Park, SA 5042, Australia
| | - Kareeann Sok Fun Khow
- Geriatric Training Research and Aged Care Centre, The University of Adelaide, Paradise, SA 5075, Australia
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Roumelioti ME, Glew RH, Khitan ZJ, Rondon-Berrios H, Argyropoulos CP, Malhotra D, Raj DS, Agaba EI, Rohrscheib M, Murata GH, Shapiro JI, Tzamaloukas AH. Fluid balance concepts in medicine: Principles and practice. World J Nephrol 2018; 7:1-28. [PMID: 29359117 PMCID: PMC5760509 DOI: 10.5527/wjn.v7.i1.1] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/10/2017] [Accepted: 11/28/2017] [Indexed: 02/06/2023] Open
Abstract
The regulation of body fluid balance is a key concern in health and disease and comprises three concepts. The first concept pertains to the relationship between total body water (TBW) and total effective solute and is expressed in terms of the tonicity of the body fluids. Disturbances in tonicity are the main factor responsible for changes in cell volume, which can critically affect brain cell function and survival. Solutes distributed almost exclusively in the extracellular compartment (mainly sodium salts) and in the intracellular compartment (mainly potassium salts) contribute to tonicity, while solutes distributed in TBW have no effect on tonicity. The second body fluid balance concept relates to the regulation and measurement of abnormalities of sodium salt balance and extracellular volume. Estimation of extracellular volume is more complex and error prone than measurement of TBW. A key function of extracellular volume, which is defined as the effective arterial blood volume (EABV), is to ensure adequate perfusion of cells and organs. Other factors, including cardiac output, total and regional capacity of both arteries and veins, Starling forces in the capillaries, and gravity also affect the EABV. Collectively, these factors interact closely with extracellular volume and some of them undergo substantial changes in certain acute and chronic severe illnesses. Their changes result not only in extracellular volume expansion, but in the need for a larger extracellular volume compared with that of healthy individuals. Assessing extracellular volume in severe illness is challenging because the estimates of this volume by commonly used methods are prone to large errors in many illnesses. In addition, the optimal extracellular volume may vary from illness to illness, is only partially based on volume measurements by traditional methods, and has not been determined for each illness. Further research is needed to determine optimal extracellular volume levels in several illnesses. For these reasons, extracellular volume in severe illness merits a separate third concept of body fluid balance.
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Affiliation(s)
- Maria-Eleni Roumelioti
- Division of Nephrology, Department of Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, United States
| | - Robert H Glew
- Department of Surgery, University of New Mexico School of Medicine, Albuquerque, NM 87131, United States
| | - Zeid J Khitan
- Division of Nephrology, Department of Medicine, Joan Edwards School of Medicine, Marshall University, Huntington, WV 25701, United States
| | - Helbert Rondon-Berrios
- Division of Renal and Electrolyte, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, United States
| | - Christos P Argyropoulos
- Division of Nephrology, Department of Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, United States
| | - Deepak Malhotra
- Division of Nephrology, Department of Medicine, University of Toledo School of Medicine, Toledo, OH 43614-5809, United States
| | - Dominic S Raj
- Division of Renal Disease and Hypertension, Department of Medicine, George Washington University, Washington, DC 20037, United States
| | - Emmanuel I Agaba
- Division of Nephology, Department of Medicine, Jos University Medical Center, Jos, Plateau State 930001, Nigeria
| | - Mark Rohrscheib
- Division of Nephrology, Department of Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, United States
| | - Glen H Murata
- Research Service, Raymond G Murphy VA Medical Center and University of New Mexico School of Medicine, Albuquerque, NM 87108, United States
| | | | - Antonios H Tzamaloukas
- Research Service, Raymond G Murphy VA Medical Center and University of New Mexico School of Medicine, Albuquerque, NM 87108, United States
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84
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Devraj R, Borrego ME, Vilay AM, Pailden J, Horowitz B. Awareness, self-management behaviors, health literacy and kidney function relationships in specialty practice. World J Nephrol 2018; 7:41-50. [PMID: 29359119 PMCID: PMC5760511 DOI: 10.5527/wjn.v7.i1.41] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/20/2017] [Accepted: 12/04/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To determine the relationship between chronic kidney disease (CKD) awareness (CKD-A), self-management behaviors (CKD-SMB) knowledge, performance of CKD-SMBs, health literacy (HL) and kidney function.
METHODS Participants were eligible patients attending an outpatient nephrology clinic. Participants were administered: Newest Vital Sign to measure HL, CKD self-management knowledge tool (CKD-SMKT) to assess knowledge, past performance of CKD-SMB, CKD-A. Estimated GFR (eGFR) was determined using the MDRD-4 equation. Duration of clinic participation and CKD cause were extracted from medical charts.
RESULTS One-hundred-fifty patients participated in the study. eGFRs ranged from 17-152 mL/min per 1.73 m2. Majority (83%) of respondents had stage 3 or 4 CKD, low HL (63%), and were CKD aware (88%). Approximately 40% (10/25) of patients in stages 1 and 2 and 6.4% (8/125) in stages 3 and 4 were unaware of their CKD. CKD-A differed with stage (P < 0.001) but not by HL level, duration of clinic participation, or CKD cause. Majority of respondents (≥ 90%) correctly answered one or more CKD-SMKT items. Knowledge of one behavior, “controlling blood pressure” differed significantly by CKD-A. CKD-A was associated with past performance of two CKD-SMBs, “controlling blood pressure” (P = 0.02), and “keeping healthy body weight” (P = 0.01). Adjusted multivariate analyses between CKD-A and: (1) HL; and (2) CKD-SMB knowledge were non-significant. However, there was a significant relationship between CKD-A and kidney function after controlling for demographics, HL, and CKD-SMB (P < 0.05).
CONCLUSION CKD-A is not associated with HL, or better CKD-SMBs. CKD-A is significantly associated with kidney function and substantially lower eGFR, suggesting the need for focused patient education in CKD stages 1.
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Affiliation(s)
- Radhika Devraj
- School of Pharmacy, Southern Illinois University Edwardsville, Edwardsville, IL 62026, United States
| | - Matthew E Borrego
- College of Pharmacy, University of New Mexico, Albuquerque, NM 87131, United States
| | - A Mary Vilay
- College of Pharmacy, University of New Mexico, Albuquerque, NM 87131, United States
| | - Junvie Pailden
- College of Arts and Sciences, Southern Illinois University Edwardsville, Edwardsville, IL 62026, United States
| | - Bruce Horowitz
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, UT 84112, United States
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85
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Abstract
This review will encompass definition, pathogenesis, renal clinical manifestations and treatment of immunoglobulin G4-related diseases (IgG4-RDs). IgG4-RD is a recently recognized clinical entity that often involves multiple organs and is characterized by high levels of serum immunoglobulins G4, dense infiltration of IgG4+ cells and storiform fibrosis. Cellular immunity, particularly T-cell mediated immunity, has been implicated in the pathogenesis of IgG4-RDs. The most frequent renal manifestations of IgG4-RD are IgG4-related tubulointerstitial nephritis, membranous glomerulopathy and obstructive nephropathy secondary to urinary tract obstruction due to IgG4-related retroperitoneal fibrosis. IgG4-RD diagnosis should be based on specific histopathological findings, confirmed by tissue immunostaining, typical radiological findings and an appropriate clinical context. The first line treatment is the steroids with two warnings: Steroid resistance and relapse after discontinuation. In the case of steroid resistance, B cell depleting agents as rituximab represent the second-line treatment. In the case of relapse after discontinuation, steroid treatment may be associated with steroid sparing agents. Since the disease has been only recently identified, more prospective, long-term studies are needed to an improved understanding and a more correct and safe treatment.
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Affiliation(s)
- Maurizio Salvadori
- Renal Unit, Department of Transplantation, Careggi University Hospital, Florence 50139, Italy
| | - Aris Tsalouchos
- Division of Nephrology, Nephrology and Dialysis Unit, Saints Cosmas and Damian Hospital, Pescia 51017, Italy
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86
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Almalki AH, Sadagah LF, Qureshi M, Maghrabi H, Algain A, Alsaeed A. Atypical hemolytic-uremic syndrome due to complement factor I mutation. World J Nephrol 2017; 6:243-250. [PMID: 29226095 PMCID: PMC5714872 DOI: 10.5527/wjn.v6.i6.243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/12/2017] [Accepted: 11/02/2017] [Indexed: 02/06/2023] Open
Abstract
Atypical hemolytic-uremic syndrome (aHUS) is a rare disease of complement dysregulation leading to thrombotic microangiopathy (TMA). Renal involvement and progression to end-stage renal disease are common in untreated patients. We report a 52-year-old female patient who presented with severe acute kidney injury, microangiopathic hemolytic anemia, and thrombocytopenia. She was managed with steroid, plasma exchange, and dialysis. Kidney biopsy shows TMA and renal cortical necrosis. Genetic analysis reveals heterozygous complement factor I (CFI) mutation. Eculizumab was initiated after 3 mo of presentation, continued for 9 mo, and stopped because of sustained hematologic remission, steady renal function, and cost issues. Despite this, the patient continued to be in hematologic remission and showed signs of renal recovery, and peritoneal dialysis was stopped 32 mo after initiation. We report a case of aHUS due to CFI mutation, which, to the best of our knowledge, has not been reported before in Saudi Arabia. Our case illustrates the challenges related to the diagnosis and management of this condition, in which a high index of suspicion and prompt treatment are usually necessary.
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Affiliation(s)
- Abdullah H Almalki
- Ministry of National Guard, Jeddah 21423, Saudi Arabia
- King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard, Jeddah 21423, Saudi Arabia
| | | | | | - Hatim Maghrabi
- Ministry of National Guard, Jeddah 21423, Saudi Arabia
- King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard, Jeddah 21423, Saudi Arabia
| | | | - Ahmed Alsaeed
- Ministry of National Guard, Jeddah 21423, Saudi Arabia
- King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard, Jeddah 21423, Saudi Arabia
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Giannaki CD, Hadjigavriel M, Lazarou A, Michael A, Damianou L, Atmatzidis E, Stefanidis I, Hadjigeorgiou GM, Sakkas GK, Pantzaris M. Restless legs syndrome is contributing to fatigue and low quality of life levels in hemodialysis patients. World J Nephrol 2017; 6:236-242. [PMID: 28948161 PMCID: PMC5592428 DOI: 10.5527/wjn.v6.i5.236] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 05/24/2017] [Accepted: 07/10/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To examine whether hemodialysis (HD) patients with restless legs syndrome (RLS) are subjects of greater fatigue and impaired quality of life (QoL) compared to HD patients without RLS.
METHODS Eighty five stable HD patients participated in this study. According to their RLS status, the patients were divided into the RLS group (n = 23) and the non-RLS group (n = 62). QoL, fatigue, sleep quality, daily sleepiness and depression symptoms were assessed by using various questionnaires. Finally, biochemical parameters including iron, ferritin, hemoglobin, hematocrit and parathormone were assessed.
RESULTS The HD patients with RLS scored worse in all the questionnaires used in the study (P < 0.05). The patients with RLS were more likely to receive the HD therapy on the morning shift, whilst 43.5% of the RLS patients reported to experience the RLS symptoms also during HD. The severity of RLS was correlated with fatigue, depression score and sleep quality (P < 0.05).
CONCLUSION HD patients with RLS are subject to lower QoL related parameters and greater fatigue compared to HD patients without RLS. RLS should be successfully managed in order to improve the QoL of the sufferers.
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Affiliation(s)
- Christoforos D Giannaki
- Department of Life and Health Sciences, University of Nicosia, Nicosia CY 1700, Cyprus
- the Cyprus Institute of Neurology and Genetics, Nicosia CY 1683, Cyprus
| | | | - Akis Lazarou
- Hemodialysis Unit, Limassol General Hospital, Limassol CY 3304, Cyprus
| | - Aristos Michael
- Hemodialysis Unit, Limassol General Hospital, Limassol CY 3304, Cyprus
| | - Loukas Damianou
- Hemodialysis Unit, Limassol General Hospital, Limassol CY 3304, Cyprus
| | | | | | | | - Giorgos K Sakkas
- Faculty of Sport and Health Sciences, University of St Mark and St John, Plymouth PL6 8BH, United Kingdom
| | - Marios Pantzaris
- the Cyprus Institute of Neurology and Genetics, Nicosia CY 1683, Cyprus
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88
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Abstract
Chronic kidney disease is a prevalent condition that affects millions of people worldwide and is a major risk factor of cardiovascular morbidity and mortality. The main diseases that lead to chronic kidney disease are frequent entities as diabetes mellitus, hypertension and glomerulopathies. One of the clinical markers of kidney disease progression is proteinuria. Moreover, the histological hallmark of kidney disease is sclerosis, located both in the glomerular and in the interstitial compartments. Glomerulosclerosis underscores an irreversible lesion that is clinically accompanied by proteinuria. In this regard, proteinuria and glomerular sclerosis are linked by the cell that has been conserved phylogenetically not only to prevent the loss of proteins in the urine, but also to maintain the health of the glomerular filtration barrier: The podocyte. It can then be concluded that the link between proteinuria, kidney disease progression and chronic kidney disease is mainly related to the podocyte. What is this situation due to? The podocyte is unable to proliferate under normal conditions, and a complex molecular machinery exists to avoid its detachment and eventual loss. When the loss of podocytes in the urine, or podocyturia, is taking place and its glomerular absolute number decreased, glomerulosclerosis is the predominant histological feature in a kidney biopsy. Therefore, tissular podocyte shortage is the cause of proteinuria and chronic kidney disease. In this regard, podocyturia has been demonstrated to precede proteinuria, showing that the clinical management of proteinuria cannot be considered an early intervention. The identification of urinary podocytes could be an additional tool to be considered by nephrologists to assess the activity of glomerulopathies, for follow-up purposes and also to unravel the pathophysiology of podocyte detachment in order to tailor the therapy of glomerular diseases more appropriately.
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Affiliation(s)
- Hernán Trimarchi
- Nephrology Service, Hospital Británico de Buenos Aires, Buenos Aires 1280AEB, Argentina
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89
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Al Malla M, Varghese NV, AlAbdullatif M, Narchi H, Khassawneh M. Prevalence and outcome of acute kidney injury, as defined by the new Kidney Disease Improving Global Outcomes guideline, in very low birth weight infants. World J Nephrol 2017; 6:229-235. [PMID: 28948160 PMCID: PMC5592427 DOI: 10.5527/wjn.v6.i5.229] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 06/16/2017] [Accepted: 07/24/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the prevalence, risk factors and outcome of acute kidney injury (AKI) in very low birth weight (VLBW) infants.
METHODS In this retrospective study of VLBW infants, we analyzed the prevalence of AKI, as defined by changes in serum creatinine and urine output, associated risk factors and outcomes.
RESULTS A total of 293 VLBW infants (mean gestational age 28.7 wk) were included, of whom 109 weighed less than 1000 g at birth. The overall prevalence of AKI was 11.6% (22% in infants with a birth weight under 1000 g and 5.4% those heavier). A total of 19 (55%) affected infants died, with a mortality rate of 58% in infant less than 1000 g and 50% in those heavier. After adjusting for confounding variables, only necrotizing enterocolitis (NEC) remained associated with AKI, with odds ratio of 4.9 (95%CI: 1.9-18.6). Blood pressure and glomerular filtration rate (GFR) were not different between affected infants and the others upon discharge from hospital. A normal GFR was documented in all affected infants at one year of age.
CONCLUSION Using Kidney Disease Improving Global Outcomes definition of AKI, it occurred in over 10% of VLBW infants, more commonly in infants with lower birth weight. NEC was an independent associated risk factor. Renal function, as defined by GFR, was normal in all surviving affected infants 10 to 12 mo later.
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Affiliation(s)
- Maisa Al Malla
- Department of Paediatrics, Tawam Hospital, P.O. Box 15258, Al Ain, United Arab Emirates
| | - Nisha Viji Varghese
- Department of Paediatrics, Tawam Hospital, P.O. Box 15258, Al Ain, United Arab Emirates
| | - Mustafa AlAbdullatif
- Department of Paediatrics, Tawam Hospital, P.O. Box 15258, Al Ain, United Arab Emirates
| | - Hassib Narchi
- Department of Paediatrics, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Mohammad Khassawneh
- Department of Paediatrics, Tawam Hospital, P.O. Box 15258, Al Ain, United Arab Emirates
- Department of paediatrics, Jordan University of Science and Technology, Irbid 22110, Jordan
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90
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Xu Z, Murata GH, Sun Y, Glew RH, Qualls C, Vigil D, Servilla KS, Golper TA, Tzamaloukas AH. Reproducibility of serial creatinine excretion measurements in peritoneal dialysis. World J Nephrol 2017; 6:201-208. [PMID: 28729968 PMCID: PMC5500457 DOI: 10.5527/wjn.v6.i4.201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/21/2017] [Accepted: 05/05/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To test whether muscle mass evaluated by creatinine excretion (EXCr) is maintained in patients with end-stage kidney disease (ESKD) treated by peritoneal dialysis (PD), we evaluated repeated measurements of EXCr in a PD population.
METHODS One hundred and sixty-six PD patients (94 male, 72 female) receiving the same PD dose for the duration of the study (up to approximately 2.5 years) had repeated determinations of total (in urine plus spent dialysate) 24-h EXCr (EXCr T) to assess the adequacy of PD by creatinine clearance. All 166 patients had two EXCr T determinations, 84 of the 166 patients had three EXCr T determinations and 44 of the 166 patients had four EXCr T measurements. EXCr T values were compared using the paired t test in the patients who had two studies and by repeated measures ANOVA in those who were studied three or four times.
RESULTS In patients who were studied twice, with the first and second EXCr T measurements performed at 9.2 ± 15.2 mo and 17.4 ± 15.8 mo after onset of PD, respectively, EXCr T did not differ between the first and second study. In patients studied three times and whose final assessment occurred 24.7 ± 16.3 mo after initiating PD, EXCr T did not differ between the first and second study, but was significantly lower in the third study compared to the first study. In patients who were studied four times and whose fourth measurement was taken 31.9 ± 16.8 mo after onset of PD, EXCr T did not differ between any of the studies. The average EXCr T value did not change significantly, with the exception of the third study in the patients studied thrice. However, repeated determinations of EXCr T in individuals showed substantial variability, with approximately 50% of the repeated determinations being higher or lower than the first determination by 15% or more.
CONCLUSION The average value of EXCr T remains relatively constant for up to 2.5 years of follow-up in PD patients who adhere to the same PD schedule. However, repeated individual EXCr T values vary considerably in a large proportion of the patients. Further studies are needed to evaluate the clinical significance of varying EXCr T values and the stability of EXCr T beyond 2.5 years of PD follow-up.
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Sweeney WE, Frost P, Avner ED. Tesevatinib ameliorates progression of polycystic kidney disease in rodent models of autosomal recessive polycystic kidney disease. World J Nephrol 2017; 6:188-200. [PMID: 28729967 PMCID: PMC5500456 DOI: 10.5527/wjn.v6.i4.188] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/30/2017] [Accepted: 05/15/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the therapeutic potential of tesevatinib (TSV), a unique multi-kinase inhibitor currently in Phase II clinical trials for autosomal dominant polycystic kidney disease (ADPKD), in well-defined rodent models of autosomal recessive polycystic kidney disease (ARPKD).
METHODS We administered TSV in daily doses of 7.5 and 15 mg/kg per day by I.P. to the well characterized bpk model of polycystic kidney disease starting at postnatal day (PN) 4 through PN21 to assess efficacy and toxicity in neonatal mice during postnatal development and still undergoing renal maturation. We administered TSV by oral gavage in the same doses to the orthologous PCK model (from PN30 to PN90) to assess efficacy and toxicity in animals where developmental processes are complete. The following parameters were assessed: Body weight, total kidney weight; kidney weight to body weight ratios; and morphometric determination of a cystic index and a measure of hepatic disease. Renal function was assessed by: Serum BUN; creatinine; and a 12 h urinary concentrating ability. Validation of reported targets including the level of angiogenesis and inhibition of angiogenesis (active VEGFR2/KDR) was assessed by Western analysis.
RESULTS This study demonstrates that: (1) in vivo pharmacological inhibition of multiple kinase cascades with TSV reduced phosphorylation of key mediators of cystogenesis: EGFR, ErbB2, c-Src and KDR; and (2) this reduction of kinase activity resulted in significant reduction of renal and biliary disease in both bpk and PCK models of ARPKD. The amelioration of disease by TSV was not associated with any apparent toxicity.
CONCLUSION The data supports the hypothesis that this multi-kinase inhibitor TSV may provide an effective clinical therapy for human ARPKD.
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Wiedermann CJ, Wiedermann W, Joannidis M. Causal relationship between hypoalbuminemia and acute kidney injury. World J Nephrol 2017; 6:176-187. [PMID: 28729966 PMCID: PMC5500455 DOI: 10.5527/wjn.v6.i4.176] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 04/21/2017] [Accepted: 05/05/2017] [Indexed: 02/06/2023] Open
Abstract
Our meta-analysis published in 2010 provided evidence that low levels of serum albumin (hypoalbuminemia) are a significant independent predictor of acute kidney injury (AKI) and death following AKI. Since then, a large volume of additional data from observational clinical studies has been published further evaluating the relationship between serum albumin and AKI occurrence. This is an updated review of the literature to re-evaluate the hypothesis that hypoalbuminemia is independently associated with increased AKI risk. Eligible studies published from September 2009 to December 2016 were sought in PubMed (MEDLINE) and forty-three were retained, the great majority being retrospective observational cohort studies. These included a total of about 68000 subjects across a diverse range of settings, predominantly cardiac surgery and acute coronary interventions, infectious diseases, transplant surgery, and cancer. Appraisal of this latest data set served to conclusively corroborate and confirm our earlier hypothesis that lower serum albumin is an independent predictor both of AKI and death after AKI, across a range of clinical scenarios. The body of evidence indicates that hypoalbuminemia may causally contribute to development of AKI. Furthermore, administration of human albumin solution has the potential to prevent AKI; a randomized, controlled study provides evidence that correcting hypoalbuminemia may be renal-protective. Therefore, measurement of serum albumin to diagnose hypoalbuminemia may help identify high-risk patients who may benefit from treatment with exogenous human albumin. Multi-center, prospective, randomized, interventional studies are warranted, along with basic research to define the mechanisms through which albumin affords nephroprotection.
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93
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Tankeu AT, Kaze FF, Noubiap JJ, Chelo D, Dehayem MY, Sobngwi E. Exercise-induced albuminuria and circadian blood pressure abnormalities in type 2 diabetes. World J Nephrol 2017; 6:209-216. [PMID: 28729969 PMCID: PMC5500458 DOI: 10.5527/wjn.v6.i4.209] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 05/08/2017] [Accepted: 05/31/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the relationship between circadian variations in blood pressure (BP) and albuminuria at rest, and during exercise in non-hypertensive type 2 diabetes (T2D) patients.
METHODS We conducted a cross-sectional study in well controlled T2D patients, non-hypertensive, without clinical proteinuria and normal creatinine clearance. In each participant, we recorded the BP using ambulatory blood pressure monitoring (ABPM) for 24-h, and albuminuria at rest and after a standardized treadmill exercise.
RESULTS We enrolled 27 type 2 patients with a median age of 52; and a mean duration of diabetes and HbA1c of 3.6 ± 0.8 years and 6.3% ± 0.5% respectively. Using a 24-h ABPM, we recorded a mean diurnal systolic blood pressure (SBP) of 128 ± 17 mmHg vs nocturnal of 123 ± 19 mmHg (P = 0.004), and mean diurnal diastolic blood pressure (DBP) of 83 ± 11 mmHg vs nocturnal 78 ± 14 mmHg (P = 0.002). There was a significant difference between albuminuria at rest [median = 23 mg, interquartile range (IQR) = 10-51] and after exercise (median = 35 mg, IQR = 23-80, P < 0.001). Patients with exercise induced albuminuria had an increase in nocturnal BP values on all three components (128 mmHg vs 110 mmHg, P = 0.03 for SBP; 83 mmHg vs 66 mmHg, P = 0.04; 106 vs 83, P = 0.02 for mean arterial pressure), as well as albuminuric patients at rest. Moreover, exercise induced albuminuria detect a less increase in nocturnal DBP (83 vs 86, P = 0.03) than resting albuminuria.
CONCLUSION Exercise induced albuminuria is associated with an increase in nocturnal BP values in T2D patients.
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Kazory A. Fluid overload as a major target in management of cardiorenal syndrome: Implications for the practice of peritoneal dialysis. World J Nephrol 2017; 6:168-175. [PMID: 28729965 PMCID: PMC5500454 DOI: 10.5527/wjn.v6.i4.168] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/23/2017] [Accepted: 05/19/2017] [Indexed: 02/06/2023] Open
Abstract
Congestion is an integral component of cardiorenal syndrome and portends an adverse impact on the outcomes. Recent studies suggest that congestion has the ability of modulating the interactions between the kidney and the heart in this setting. Peritoneal dialysis (PD) is a home-based therapeutic modality that is not only offered to patients with end-stage renal disease to provide solute clearance and ultrafiltration, but it has also been used in patients with refractory heart failure and fluid overload to help optimize volume status. Several uncontrolled studies and case series have so far evaluated the role of PD in management of hypervolemia for patients with heart failure. They have generally reported favorable results in this setting. However, the data on the outcomes of patients with end-stage renal disease and concomitant heart failure is mixed, and the proposed theoretical advantages of PD might not translate into improved clinical endpoints. Congestion is prevalent in this patient population and has a significant effect on their survival. As studies suggest that a significant subset of patients with end-stage renal disease who receive PD therapy are hypervolemic, suboptimal management of congestion could at least in part explain these conflicting results. PD is a highly flexible therapeutic modality and the choice of techniques, regimens, and solutions can affect its ability for optimization of fluid status. This article provides an overview of the currently available data on the role and clinical relevance of congestion in patients with cardiorenal syndrome and reviews potential options to enhance decongestion in these patients.
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Esposito P, Domenech MV, Serpieri N, Calatroni M, Massa I, Avella A, La Porta E, Estienne L, Caramella E, Rampino T. Severe cyclophosphamide-related hyponatremia in a patient with acute glomerulonephritis. World J Nephrol 2017; 6:217-220. [PMID: 28729970 PMCID: PMC5500459 DOI: 10.5527/wjn.v6.i4.217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/12/2017] [Accepted: 06/08/2017] [Indexed: 02/06/2023] Open
Abstract
Cyclophosphamide is frequently used to treat cancer, autoimmune and renal diseases, such as rapidly progressive glomerulonephritis. Its side effects are well-known, including bone marrow depression, infections, alopecia, sterility, bladder malignancy and hemorrhagic cystitis. Moreover, in some cases cyclophosphamide use has been related to the onset of hyponatremia, by development of a syndrome of inappropriate antidiuresis. Indeed, severe hyponatremia has been previously reported in patients treated with high-dose or moderate-dose of intravenous cyclophosphamide, while only few cases have been reported in patients treated with low dose. Here, we discuss a case of a syndrome of inappropriate antidiuresis followed to a single low-dose of intravenous cyclophosphamide in a patient with a histological diagnosis of acute glomerulonephritis, presenting as acute kidney injury. After cyclophosphamide administration (500 mg IV), while renal function gradually improved, the patient developed confusion and headache. Laboratory examinations showed serum sodium concentration dropped to 122 mmol per liter associated with an elevated urinary osmolality of 199 mOsm/kg, while common causes of acute hyponatremia were excluded. He was successfully treated with water restriction and hypertonic saline solution infusion with the resolution of the electrolyte disorder. This case, together with the previous ones already reported, highlights that electrolyte profile should be strictly monitored in patients undergoing cyclophosphamide therapy in order to early recognize the potentially life-threatening complications of acute water retention.
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Grande D, Terlizzese P, Iacoviello M. Role of imaging in the evaluation of renal dysfunction in heart failure patients. World J Nephrol 2017; 6:123-131. [PMID: 28540202 PMCID: PMC5424434 DOI: 10.5527/wjn.v6.i3.123] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 12/13/2016] [Accepted: 03/02/2017] [Indexed: 02/06/2023] Open
Abstract
Heart failure and kidney disease share common pathophysiological pathways which can lead to mutual dysfunction, known as cardiorenal syndrome. In heart failure patients, renal impairment is related to hemodynamic and non-hemodynamic factors. Both decreased renal blood flow and renal venous congestion due to heart failure could lead to impaired renal function. Kidney disease and worsening renal function are independently associated with poor prognosis in heart failure patients, both in acute and chronic clinical settings. The aim of this review is to assess the role of renal imaging modalities in the evaluation and management of heart failure patients. Renal imaging techniques could complete laboratory data, as estimated glomerular filtration rate, exploring different pathophysiological factors involved in kidney disease and adding valuable information about renal structure and function. In particular, Doppler examination of arterial and venous hemodynamics is a feasible and non invasive technique, which has proven to be a reliable method for prognostic stratification in patients with cardiorenal syndrome. The renal resistance index, a measure related to renal hemodynamics, can be calculated from the Doppler evaluation of arterial flow. Moreover, the analysis of Doppler venous flow patterns can integrate information from the arterial study and evaluate renal congestion. Other imaging modalities are promising, but still confined to research purposes.
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Sakkas GK, Krase AA, Giannaki CD, Karatzaferi C. Cold dialysis and its impact on renal patients’ health: An evidence-based mini review. World J Nephrol 2017; 6:119-122. [PMID: 28540201 PMCID: PMC5424433 DOI: 10.5527/wjn.v6.i3.119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 04/13/2017] [Accepted: 04/25/2017] [Indexed: 02/06/2023] Open
Abstract
Chronic renal disease is associated with advanced age, diabetes, hypertension, obesity, musculoskeletal problems and cardiovascular disease, the latter being the main cause of mortality in patients receiving haemodialysis (HD). Cooled dialysate (35 °C-36 °C) is recently employed to reduce the incidence of intradialytic hypotension in patients on chronic HD. The studies to date that have evaluated cooled dialysate are limited, however, data suggest that cooled dialysate improves hemodynamic tolerability of dialysis, minimizes hypotension and exerts a protective effect over major organs including the heart and brain. The current evidence-based review is dealing with the protective effect of cold dialysis and the benefits of it in aspects affecting patients’ quality of care and life. There is evidence to suggest that cold dialysis can reduce cardiovascular mortality. However, large multicentre randomized clinical trials are urgently needed to provide further supporting evidence in order to incorporate cold dialysis in routine clinical practice.
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Abstract
AIM To report our experience of acute kidney injury (AKI) developed after exposure to poisonous substance.
METHODS Retrospective study where data was collected from case records of patients coming to this institute during January 1990 to May 2016. This institution is a tertiary care center for renal care in the metropolitan city of Karachi, Pakistan. History of ingested substance, symptoms on presentation, basic laboratory tests on arrival, mode of treatment and outcome were recorded from all patients and are presented here. Patients developing AKI after snake envenomation or scorpion stings are not included in this study.
RESULTS During studied period 184 cases of AKI developing after poisoning were seen at our institution. The largest group was from paraphenyline diamine poisoning comprising 135 patients, followed by methanol in 8, organophosphorus compounds in 5, paraquat in 5, copper sulphate in 5, tartaric acid in 4, phenobarbitone in 3 and benzodiazipines, datura, rat killer, fish gall bladder, arsenic, boiler water, ammonium dichromate, acetic acid and herbs with lesser frequency. In 8 patients multiple substances were ingested in combination. Renal replacement therapy was required in 96% of patients. Complete recovery was seen in 72.28% patients, 20% died during acute phase of illness.
CONCLUSION It is important to report poisonous substances causing vital organ failure to increase awareness among general population as well as health care providers.
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Vikrant S, Jaryal A, Parashar A. Clinicopathological spectrum of snake bite-induced acute kidney injury from India. World J Nephrol 2017; 6:150-161. [PMID: 28540205 PMCID: PMC5424437 DOI: 10.5527/wjn.v6.i3.150] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/10/2016] [Accepted: 03/17/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To study the clinico-pathological spectrum of snake bite-induced acute kidney injury (AKI).
METHODS A retrospective study of patients admitted at Indira Gandhi Medical College Hospital, Shimla with snake bite-induced AKI from July 2003 to June 2016. Medical records were evaluated for patient’s information on demographic, clinical characteristics, complications and outcome. Outcomes of duration of hospital stay, requirement for intensive care unit support, treatment with dialysis, survival and mortality were analyzed. The survival and non survival groups were compared to see the difference in the demographic factors, clinical characteristics, laboratory results, and complications. In patients subjected to kidney biopsy, the findings of histopathological examination of the kidney biopsies were also analyzed.
RESULTS One hundred and twenty-one patients were diagnosed with snake bite-induced AKI. Mean age was 42.2 ± 15.1 years and majority (58%) were women. Clinical details were available in 88 patients. The mean duration of arrival at hospital was 3.4 ± 3.7 d with a range of 1 to 30 d. Eighty percent had oliguria and 55% had history of having passed red or brown colored urine. Coagulation defect was seen in 89% patients. The hematological and biochemical laboratory abnormalities were: Anemia (80.7%), leukocytosis (75%), thrombocytopenia (47.7%), hyperkalemia (25%), severe metabolic acidosis (39.8%), hepatic dysfunction (40.9%), hemolysis (85.2%) and rhabdomyolysis (68.2%). Main complications were: Gastrointestinal bleed (12.5%), seizure/encephalopathy (10.2%), hypertension, pneumonia/acute respiratory distress syndrome (ARDS) and disseminated intravascular coagulation (9.1% each), hypotension and multi organ failure (MOF) (4.5% each). Eighty-two percent patients required renal replacement therapy. One hundred and ten (90.9%) patient survived and 11 (9.1%) patients died. As compared to the survival group, the white blood cell count (P = 0.023) and bilirubin levels (P = 0.006) were significant higher and albumin levels were significantly lower (0.005) in patients who died. The proportion of patients with pneumonia/ARDS (P = 0.001), seizure/encephalopathy (P = 0.005), MOF (P = 0.05) and need for intensive care unit support (0.001) was significantly higher and duration of hospital stay was significantly shorter (P = 0.012) in patients who died. Kidney biopsy was done in total of 22 patients. Predominant lesion on kidney biopsy was acute tubular necrosis (ATN) in 20 (91%) cases. In 11 cases had severe ATN and in other nine (41%) cases kidney biopsy showed features of ATN associated with mild to moderate acute interstitial nephritis (AIN). One patient only had moderate AIN and one had patchy renal cortical necrosis (RCN).
CONCLUSION AKI due to snake bite is severe and a high proportion requires renal replacement therapy. On renal histology ATN and AIN are common, RCN is rare.
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Disthabanchong S, Boongird S. Role of different imaging modalities of vascular calcification in predicting outcomes in chronic kidney disease. World J Nephrol 2017; 6:100-110. [PMID: 28540199 PMCID: PMC5424431 DOI: 10.5527/wjn.v6.i3.100] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 03/27/2017] [Accepted: 04/19/2017] [Indexed: 02/06/2023] Open
Abstract
Vascular calcification (VC) is common among patients with chronic kidney disease (CKD). The severity of VC is associated with increased risk of cardiovascular events and mortality. Risk factors for VC include traditional cardiovascular risk factors as well as CKD-related risk factors such as increased calcium and phosphate load. VC is observed in arteries of all sizes from small arterioles to aorta, both in the intima and the media of arterial wall. Several imaging techniques have been utilized in the evaluation of the extent and the severity of VC. Plain radiographs are simple and readily available but with the limitation of decreased sensitivity and subjective and semi-quantitative quantification methods. Mammography, especially useful among women, offers a unique way to study breast arterial calcification, which is largely a medial-type calcification. Ultrasonography is suitable for calcification in superficial arteries. Analyses of wall thickness and lumen size are also possible. Computed tomography (CT) scan, the gold standard, is the most sensitive technique for evaluation of VC. CT scan of coronary artery calcification is not only useful for cardiovascular risk stratification but also offers an accurate and an objective analysis of the severity and progression.
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