Abstract:
PURPOSE OF REVIEW:Epithelial sodium channels mediate Na+ transport across high resistance, Na+-transporting epithelia. This review describes recent findings that indicate that epithelial sodium channels are activated by the proteolytic release of inhibitory peptides from the alpha and gamma subunits. RECENT FINDINGS:Non-cleaved channels have a low intrinsic open probability that may reflect enhanced channel inhibition by external Na+--a process referred to as Na+ self-inhibition. Cleavage at a minimum of two sites within the alpha or gamma subunits is required to activate the channel, presumably by releasing inhibitory fragments. The extent of epithelial sodium channel proteolysis is dependent on channel residency time at the plasma membrane, as well as on the balance between levels of expression of proteases that activate epithelial sodium channels and inhibitors of these proteases. Regulated epithelial sodium channel proteolysis has been observed in rat kidney and in human airway epithelia. SUMMARY:Proteolysis of epithelial sodium channel subunits plays a key role in modulating epithelial sodium channel activity through changes in channel open probability.
journal_name
Curr Opin Nephrol Hypertensjournal_title
Current opinion in nephrology and hypertensionauthors
Hughey RP,Carattino MD,Kleyman TRdoi
10.1097/MNH.0b013e32821f6072subject
Has Abstractpub_date
2007-09-01 00:00:00pages
444-50issue
5eissn
1062-4821issn
1473-6543pii
00041552-200709000-00010journal_volume
16pub_type
杂志文章,评审abstract:PURPOSE OF REVIEW:Nitric oxide is a potent, endogenous vasodilator that regulates systemic blood pressure and renal function, among other functions. The bioactivity of nitric oxide is reduced by superoxide, a major reactive oxygen species. Overproduction of superoxide and other related reactive oxygen species resulting...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/01.mnh.0000191912.65281.e9
更新日期:2006-01-01 00:00:00
abstract:PURPOSE OF REVIEW:The amiloride-sensitive epithelial sodium channel (ENaC) plays a major role in the regulation of sodium transport in the collecting duct and hence sodium balance. This review describes recent findings in the regulation of ENaC function by serine proteases in particular and other regulatory aspects. R...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e328332bda4
更新日期:2010-01-01 00:00:00
abstract:PURPOSE OF REVIEW:The glomerular filtration barrier is a unique structure characterized by a specialized three-dimensional framework of podocytes. This review is aimed at describing the latest advances made in the understanding of polarity signalling pathways regulating the formation and the maintenance of the complex ...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e32832e316d
更新日期:2009-07-01 00:00:00
abstract::Several recently completed or ongoing large-scale clinical trials, including the Modification of Diet in Renal Disease Study, the Diabetes Control and Complications Trial, and the African-American Study of Kidney Disease and Hypertension, have all chosen the renal clearance of sodium 125I-iothalmate to monitor renal d...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-199511000-00010
更新日期:1995-11-01 00:00:00
abstract::This article reviews the current state of knowledge concerning cyclosporine A-induced hypertension after heart transplantation, its pathophysiology and management. The hypothesis is presented that a common molecular mechanism mediates both the immunosuppressive and the hypertensive actions of cyclosporine. The calcium...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-199509000-00013
更新日期:1995-09-01 00:00:00
abstract::Proteinuria (protein excretion > 300 mg/d) is an independent risk factor for the development of cardiovascular disease and renal failure. The finding of persistent proteinuria in otherwise asymptomatic patients often precedes the development of arterial hypertension and renal failure. When proteinuria is accompanied b...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-199311000-00017
更新日期:1993-11-01 00:00:00
abstract:PURPOSE OF REVIEW:Endothelial nitric oxide synthase (eNOS) and nicotinamide adenine dinucleotide (phosphate) oxidase [NAD(P)H oxidase] are both expressed in tubular epithelial cells within the renal medulla, particularly the thick ascending limb of the loop of Henle (mTALH). Thick ascending limbs contribute to long-ter...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-200501000-00003
更新日期:2005-01-01 00:00:00
abstract:PURPOSE OF REVIEW:The nephrology community lacks a unified view of protein sieving through the glomerular capillary wall. The glomerular capillary wall consists of three distinct but closely interacting layers: the fenestrated endothelium, with its glycocalyx; the podocytes, with their interdigitated foot processes and...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/mnh.0b013e3283296044
更新日期:2009-05-01 00:00:00
abstract:PURPOSE OF REVIEW:This review summarizes recent advances in the understanding of the molecular physiology and regulation of the thiazide-sensitive sodium-chloride cotransporter (NCC). RECENT FINDINGS:Mutations of with-no-lysine (WNK) kinases 1 and 4 result in hyperactivity of NCC and familial hyperkalemic hypertension...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e32832f2fcb
更新日期:2009-09-01 00:00:00
abstract:PURPOSE OF REVIEW:The imbalances in the activities of various components of the neurohormonal system that maintain renal homeostasis may have important implications in pathophysiology. This review aims to examine the evidence for disparities between angiotensin II and nitric oxide in acute and chronic kidney diseases. ...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e3282f29a8b
更新日期:2008-01-01 00:00:00
abstract:PURPOSE OF REVIEW:There has been significant progress in our understanding of the structural and functional properties and regulation of the electrogenic sodium bicarbonate cotansporter NBCe1, a membrane transporter that plays a key role in renal acid-base physiology. The NBCe1 variant NBCe1-A mediates basolateral elec...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e328363ff43
更新日期:2013-09-01 00:00:00
abstract::Hypertension in kidney transplant patients is a common complication that affects long-term patient and allograft survival. Although multifactorial in nature, at least two causes can be corrected by surgical or radiologic intervention--stenosis and native kidney-associated hypertension. Unfortunately, the current immun...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-199210000-00015
更新日期:1992-10-01 00:00:00
abstract:PURPOSE OF REVIEW:Tubulointerstitial injury is characteristic of aging-associated renal injury and progressive renal disease. Salt-sensitive hypertension is also associated with tubulointerstitial inflammation, especially when accompanied by microvascular disease. Here we summarize recent studies on the pathogenesis an...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-200305000-00003
更新日期:2003-05-01 00:00:00
abstract:PURPOSE OF REVIEW:Identification of the mechanisms of magnesium absorption and reabsorption has markedly enhanced our understanding of the causes of hypomagnesemia. RECENT FINDINGS:New gastrointestinal and renal causes of hypomagnesemia have been recently documented. SUMMARY:The recognition of new mechanisms and caus...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0000000000000238
更新日期:2016-07-01 00:00:00
abstract:PURPOSE OF REVIEW:The majority of uric acid nephrolithiasis in humans occurs in the absence of frank hyperuricosuria and is primarily a disease of excessively low urinary pH. Uric acid is substantially less soluble than urate salts so in low urine pH urate is protonated, thus favoring precipitation even under what is c...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/01.mnh.0000232876.04975.33
更新日期:2006-07-01 00:00:00
abstract:PURPOSE OF REVIEW:Studies of patients with tumors associated with osteomalacia (tumor-induced osteomalacia), X-linked hypophosphatemia (XLH) and autosomal-dominant hypophosphatemic rickets have provided important new insights into the identity and mechanisms of action of factors that play a role in controlling renal ph...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-200209000-00011
更新日期:2002-09-01 00:00:00
abstract::Mesangial cells possess Ca(2+)-activated Cl- channels, Ca(2+)-activated K+ channels, voltage-gated Ca2+ channels, ATP-sensitive K+ channels, and two types of nonselective cation channels. Angiotensin II and arginine vasopressin depolarize the membrane. This membrane depolarization is caused by the activation of Ca(2+)...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-199409000-00007
更新日期:1994-09-01 00:00:00
abstract:PURPOSE OF REVIEW:Hyperphosphatemia remains an important aspect in the management of end-stage renal disease patients. Consequently, there is a need for new, efficient and well-tolerated phosphate binders. In this review, a new phosphate-binding drug, lanthanum carbonate, with an attractive preclinical efficacy profile...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/01.mnh.0000133973.86816.e9
更新日期:2004-07-01 00:00:00
abstract:PURPOSE OF REVIEW:Emerging evidence supports an important role for the heme oxygenase system in the maintenance of a healthy pregnancy. This review attempts to collect these wide-ranging data and summarize the recent progress in the field. RECENT FINDINGS:New studies looking at heme oxygenase depletion in a variety of...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e32835d19f7
更新日期:2013-03-01 00:00:00
abstract:PURPOSE OF REVIEW:The examination of urine sediment is a diagnostic test which is frequently neglected by nephrologists. With this review the authors wanted to demonstrate that it can provide useful and relevant information in a wide spectrum of clinical situations. RECENT FINDINGS:The authors reviewed the main contri...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-200311000-00009
更新日期:2003-11-01 00:00:00
abstract::Understanding the nature of allorecognition is fundamental to the design of antigen-specific therapies for transplantation. As recently as 10 years ago it was generally believed that recognition of major histocompatibility complex (MHC) molecules by T lymphocytes was direct and represented the "simplest" kind of T-lym...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-199311000-00007
更新日期:1993-11-01 00:00:00
abstract:PURPOSE OF REVIEW:The sodium-hydrogen exchanger isoform-1 (NHE1) functions in intracellular pH and cell volume homeostasis by catalyzing an electroneutral exchange of extracellular sodium and intracellular hydrogen. Recent studies have revealed the structural functions of NHE1 as an anchor for actin filaments and a sca...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e3281bd888d
更新日期:2007-07-01 00:00:00
abstract:PURPOSE OF REVIEW:The present review addresses the recent literature demonstrating important differences in the rate of progression of kidney function decline between transplant recipients and patients with native kidney disease. It also highlights the need for prospective studies to determine the importance of nonimmu...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-200411000-00005
更新日期:2004-11-01 00:00:00
abstract::Recent insights into the etiopathogenesis of nephritogenic immune responses are derived primarily from experimental models of systemic and organ-specific autoimmunity. Genetic analyses and immune-related gene ablation studies indicate that multiple independent mechanisms determine disease susceptibility. However, full...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-199705000-00012
更新日期:1997-05-01 00:00:00
abstract:PURPOSE OF REVIEW:Insulin resistance is a known complication of end-stage renal disease that also appears to be present in earlier stages of chronic kidney disease (CKD). It is a risk factor for cardiovascular disease and an important potential therapeutic target in this population. Measurement of insulin resistance is...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e32834b23c1
更新日期:2011-11-01 00:00:00
abstract:PURPOSE OF REVIEW:Sirtuins are a family of nicotinamide adenine dinucleotide+-dependent enzymes catalyzing target protein deacetylation to modulate cellular metabolism, response to oxidative stress and inflammation, senescence, autophagy and apoptosis. In this review, we provide an overview of recent studies regarding ...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章
doi:10.1097/MNH.0000000000000660
更新日期:2021-01-01 00:00:00
abstract::Our basic understanding of sodium mechanisms provides unique insights into epithelial transport processes, and unusual clinical syndromes can arise from mutations of these ion transporters. These genetic disorders affect sodium balance, with both sodium-retaining and sodium-wasting conditions being the consequence. A ...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-200107000-00003
更新日期:2001-07-01 00:00:00
abstract::The serum levels of parathyroid hormone and magnesium depend on each other in a complex manner. The secretion of parathyroid hormone by the parathyroid is physiologically controlled by the serum calcium level, but magnesium can exert similar effects. While low levels of magnesium stimulate parathyroid hormone secretio...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/00041552-200207000-00006
更新日期:2002-07-01 00:00:00
abstract:PURPOSE OF REVIEW:The role of vitamin D beyond its importance for bone health is under much debate. In this article, we review recent evidence for genetic influences on 25-hydroxyvitamin D [25(OH)D] and discuss the uses of this information and its importance for public health. RECENT FINDINGS:Findings from large-scale...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e328346d6ba
更新日期:2011-07-01 00:00:00
abstract:PURPOSE OF REVIEW:Inadequately controlled blood pressure is considered an important risk factor for both chronic kidney disease (CKD) progression and cardiovascular disease progression in CKD patients. Patients with CKD and hypertension are typically followed in primary care practice settings and blood pressure is not ...
journal_title:Current opinion in nephrology and hypertension
pub_type: 杂志文章,评审
doi:10.1097/MNH.0b013e32834902c8
更新日期:2011-09-01 00:00:00