Abstract:
BACKGROUND:Prolonged use of corticosteroids continues to be the mainstay in the management of most proteinuric glomerulopathies, but is limited by extensive side effects. Alternative medications such as adrenocorticotropic hormone (ACTH) have been recently used to treat refractory glomerulopathies and have shown superior outcomes when compared with steroids. However, the clinical responsiveness to ACTH therapy varies considerably with a number of patients exhibiting de novo or acquired resistance. The underlying mechanism remains unknown. METHODS:A patient with steroid-dependent focal segmental glomerulosclerosis (FSGS) developed severe steroid side effects impacting quality of life and was converted to repository porcine ACTH therapy. Immediate response in the form of remission of nephrotic syndrome was noted followed by relapse in 10 weeks. Suspecting the role of some ACTH-antagonizing factors, the patient's serum was examined. RESULTS:Immunoblot-based antibody assay revealed high titers of de novo IgG antibodies in the patient's serum that were reactive to the porcine corticotropin with negligible cross-reactivity to human corticotropin. In vitro, in cultured B16 melanoma cells that express abundant melanocortin receptors, addition of the patient's serum substantially abrogated the porcine corticotropin triggered signaling activity of the melanocortinergic pathway, marked by phosphorylation of glycogen synthase kinase 3β, thus suggesting a mitigating effect on the biological functionality of porcine corticotropin. CONCLUSION:ACTH is a useful alternative therapeutic modality for refractory proteinuric glomerulopathies like FSGS. However, as quintessential therapeutic biologics, natural ACTH, regardless of purity and origin, is inevitably antigenic and may cause the formation of neutralizing antibodies in some sensitive patients, followed by resistance to ACTH therapy. It is imperative to develop ACTH analogues with less immunogenicity for improving its responsiveness in patients with glomerular diseases.
journal_name
Am J Nephroljournal_title
American journal of nephrologyauthors
Shrivastava S,Chen B,Dworkin LD,Malhotra DK,Gong Rdoi
10.1159/000506854subject
Has Abstractpub_date
2020-01-01 00:00:00pages
390-394issue
5eissn
0250-8095issn
1421-9670pii
000506854journal_volume
51pub_type
杂志文章abstract::Ion-selective electrodes have been designed for determining the ionized concentration of magnesium in blood, the biologically active form of this ion. The effect of acute acidosis induced by ammonium loading on circulating and urinary magnesium was investigated in 11 volunteers. No changes in plasma total and ionized ...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000013342
更新日期:1998-01-01 00:00:00
abstract:BACKGROUND/AIM:Slc26a6 (PAT1, CFEX) is a major chloride/base exchanger located on the apical membrane of the kidney proximal tubule. The purpose of the present study was to examine the effect of Slc26a6 deletion on the apical Na+/H+ exchanger 3 (NHE3) in the straight segment (S3) of the proximal tubule, which is the ma...
journal_title:American journal of nephrology
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doi:10.1159/000111826
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journal_title:American journal of nephrology
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doi:10.1159/000358335
更新日期:2014-01-01 00:00:00
abstract::The review focuses on biochemical metabolisms of conventional buffers and emphasizes advantages of sodium pyruvate (Pyr) in the correction of intracellular acidosis. Exogenous lactate (Lac) as an alternative of natural buffer, bicarbonate, consumes intracellular protons on an equimolar basis, regenerating bicarbonate ...
journal_title:American journal of nephrology
pub_type: 杂志文章,评审
doi:10.1159/000084141
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:Steroid therapy has become an effective option for patients with primary Sjogren's syndrome with tubulointerstitial nephritis (TIN), while the use of cytotoxic agents is still debated. Our study aimed to compare the clinical outcomes of patients treated with cyclophosphamide (CTX) combined with glucocorticoi...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000484903
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND/AIMS:Upregulation of transforming growth factor beta (TGF-beta)/Smad signaling has been implicated in the primary pathogenesis of renal fibrosis. The ubiquitin-proteasome pathway has an important influence on TGF-beta signaling through regulating Smad degradation. As E3 ubiquitin ligases, both Arkadia and Sm...
journal_title:American journal of nephrology
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doi:10.1159/000100518
更新日期:2007-01-01 00:00:00
abstract::Dialysis patients have increased susceptibility to infection and this is, in part, due to impaired phagocytic and bactericidal activities of polymorphonuclear leukocytes (PMNL). The mechanisms responsible for the reduced phagocytosis are not known. Dialysis patients have elevated blood levels of parathyroid hormone (P...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000168284
更新日期:1991-01-01 00:00:00
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journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000013557
更新日期:2000-01-01 00:00:00
abstract::We describe an elderly women who died of renal failure secondary to spontaneous renal atheroembolic disease. The sole clinical clue to this diagnosis was a profound eosinophilia up to 19,100/mm3 and a relative eosinophil count of 80%. Renal atheroembolic disease should be a prominent consideration in any patient with ...
journal_title:American journal of nephrology
pub_type: 杂志文章,评审
doi:10.1159/000168476
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journal_title:American journal of nephrology
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更新日期:2014-01-01 00:00:00
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journal_title:American journal of nephrology
pub_type: 杂志文章,评审
doi:10.1159/000169000
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND/AIMS:Although the effect of exercise on health is well established, nephrologists seldom consider physical activity in the treatment of chronic kidney disease (CKD) or CKD in the presence of diabetes mellitus (DM/CKD). The aim of the present study was to analyze the benefits of leisure-time physical activity...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000357133
更新日期:2013-01-01 00:00:00
abstract::Clinical and pathologic findings are described in 14 patients whose main abnormality was an excessively thin glomerular basement membrane (GBM). The subjects were aged 11-51 years, the majority males: most were referred because of hematuria, but proteinuria was the main problem in 2, while hypertension or renal functi...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000166914
更新日期:1985-01-01 00:00:00
abstract:BACKGROUND/AIMS:Post-renal transplant recurrent glomerulonephritis (GN) contributes to allograft loss. Rituximab treatment has been used in a multidose strategy with variable efficacy and toxicity. We investigated a novel single-dose approach. METHODS:A single center, retrospective, cohort study was conducted between ...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000371587
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Persons with chronic kidney disease (CKD) represent a population prone to cardiovascular disease (CVD) but vulnerable to adverse medication effects. We assessed the impact of intensive antihypertensive therapy on the cerebrovascular and other CVD outcomes in high-risk patients with type 2 diabetes and baseli...
journal_title:American journal of nephrology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1159/000446122
更新日期:2016-01-01 00:00:00
abstract::Two patients with a long-standing history of familial Mediterranean fever were found to have both microscopic hematuria and proteinuria during the acute attacks. Kidney biopsies from both patients revealed diffuse mesangial proliferative glomerulonephritis with intense mesangial IgA and C3 deposits and no evidence of ...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000167628
更新日期:1988-01-01 00:00:00
abstract:BACKGROUND:Older adults with advanced non-dialysis-dependent chronic kidney disease (NDD-CKD) face a high risk of hospitalization and related adverse events. METHODS:This prospective cohort study followed nephrology clinic patients ≥60 years old with NDD-CKD stages 4-5. After an eligible patient's office visit, study ...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000509046
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND/AIMS:Living donor nephrectomy can be associated with increases in blood pressure several years following the procedure, but the best method to assess blood pressure during the living donor evaluation process is unclear. METHODS:Living kidney donors underwent casual clinic and ambulatory blood pressure monit...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000335070
更新日期:2012-01-01 00:00:00
abstract::Although the acute nephrotoxicity of cisplatin has been well documented, long-term follow-up studies are scanty. We have evaluated the renal function in 35 patients who have had completed therapy with cisplatin at least 3 months before the study. All patients had normal serum creatinine levels before chemotherapy. Eva...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000168693
更新日期:1994-01-01 00:00:00
abstract::In 1828, Friedrich Wöhler, a German physician and chemist by training, published a paper that describes the formation of urea, known since 1773 to be a major component of mammalian urine, by combining cyanic acid and ammonium in vitro. In these experiments the synthesis of an organic compound from two inorganic molecu...
journal_title:American journal of nephrology
pub_type: 传,历史文章,杂志文章
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更新日期:1999-01-01 00:00:00
abstract:OBJECTIVE:Anthropometric parameters may play a role in modulating the risk of kidney dysfunction. The aim of this study was to evaluate whether anthropometric indices and the metabolic syndrome are associated with alterations of the renal resistive index (RI) in normoalbuminuric type 2 diabetic (T2DM) patients. METHOD...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000109239
更新日期:2008-01-01 00:00:00
abstract::A national sample of dialysis physicians was used to obtain data for a comparison of patient characteristics, comorbid conditions and treatment patterns associated with the five leading causes of end-stage renal disease (ESRD). The data are used to assess trends in physician care for ESRD patients and likely changes i...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000167949
更新日期:1989-01-01 00:00:00
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journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000168714
更新日期:1994-01-01 00:00:00
abstract::Maimonides (Moses ben Maimon) was born in 1135 in Cordoba, the son of a Jewish rabbi. After a seminomadic upbringing in Spain and North Africa during the rule of the Almohades, Maimonides settled in Fostate (Old Cairo), where he became renowned as a physician, eventually being appointed as court physician to Saladin a...
journal_title:American journal of nephrology
pub_type: 传,历史文章,杂志文章
doi:10.1159/000168739
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND:Chronic kidney disease (CKD) is a prevalent condition; however, little is known about healthcare resource utilization (HRU) by CKD patients. METHODS:This analysis included NHANES participants aged > or =18 years, with serum creatinine, urine protein, and hemoglobin measurements. We assessed the association ...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000178816
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:African Americans (AAs) suffer the widest gaps in chronic kidney disease (CKD) outcomes compared to Caucasian Americans (CAs) and this is because of the disparities that exist in both health and healthcare. In fact, the prevalence of CKD is 3.5 times higher in AAs compared to CAs. The disparities exist at al...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000479481
更新日期:2017-01-01 00:00:00
abstract::Thirty-one renal transplant recipients, submitted to treatment with cyclosporin in association with other immunosuppressive agents, were also treated for 9 months with two hydroxymethylglutaryl coenzyme A reductase inhibitors, simvastatin (10 mg/day) or pravastatin (20 mg/day), for concomitant hypercholesterolemia and...
journal_title:American journal of nephrology
pub_type: 临床试验,杂志文章
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更新日期:1999-01-01 00:00:00
abstract::Whole plasma from 6 normolipidemic chronic renal failure (CRF) patients undergoing hemodialysis treatment was passed through the anti-apolipoprotein (Apo) AI immunosorbent column connected to the anti-Apo B immunoaffinity column. Apo AI and B containing particles were analyzed for lipid and Apo contents. The results w...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000169011
更新日期:1996-01-01 00:00:00
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journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000366457
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:The identification of nephrin and CD2AP, podocyte proteins which modulate the properties of glomerular barrier selectivity, has made it possible to unravel the mechanisms undergoing foot process effacement and proteinuria. Here we explored the role of nephrin and CD2AP together with the integrity of the slit...
journal_title:American journal of nephrology
pub_type: 杂志文章
doi:10.1159/000072281
更新日期:2003-07-01 00:00:00