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Query: UMLS:C0920646 (renal ischemia)
 2,515 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The false channel of a type III aortic dissection caused acute renal ischemia by compression of the origin of the left renal artery in a patient with status post-right nephrectomy. To relieve the ischemia and restore renal function, percutaneous balloon fenestration was performed successfully.
Cardiovasc Intervent Radiol
PMID:Percutaneous fenestration of aortic dissection: salvage of an ischemic solitary left kidney. 903 May 8

Reactive oxygen species have been implicated in the pathophysiology of renal ischemia reperfusion injury. Antioxidants including polyphenolics have been found to protect renal cells from the cellular injury induced by ischemia and reperfusion. Resveratrol, a stilbene polyphenol found in grapes and red wine, has recently been found to protect isolated rat heart from ischemia reperfusion injury. This study was sought to determine if resveratrol could also protect renal cells from ischemic injury. Male Wistar rats were treated with control, resveratrol (0.23 microg/kg), vehicle used to solubilize resveratrol, and resveratrol plus L-NAME (15 mg/kg body wt), a nitric oxide blocker. Our results demonstrated that resveratrol administration reduced the mortality of ischemic rats from 50% to 10% and renal damage was reduced as indicated by histologic examination and serum creatinine level. The short-term administration of resveratrol also inhibited renal lipid peroxidation induced by ischemia and reperfusion both in cortex and in medulla. Electron paramagnetic resonance detected an increased formation of nitric oxide in the resveratrol-treated kidney that was reduced to the baseline value after treating the rats with L-NAME in addition to resveratrol. The results suggest that resveratrol reduced the renal ischemia reperfusion injury through a nitric oxide-dependent mechanism.
J Cardiovasc Pharmacol 2001 Mar
PMID:Resveratrol, a polyphenol found in wine, reduces ischemia reperfusion injury in rat kidneys. 1124 16

Fenoldopam, a selective agonist of dopamine-1 receptors, is a regional and systemic vasodilator. In randomized, controlled clinical trials, fenoldopam has been found to preserve renal function in situations of potential renal ischemia, such as during radiocontrast administration, cardiac and peripheral vascular surgery, liver transplantation, and treatment of severe hypertension. Fenoldopam lowers blood pressure in patients with hypertension, but has little or no effect on blood pressure in those who are normotensive. The role of fenoldopam in managing critically ill, transplant, and hypertensive patients is reviewed in this article.
Rev Cardiovasc Med 2003
PMID:The role of the DA1 receptor agonist fenoldopam in the management of critically ill, transplant, and hypertensive patients. 1255 36

Renal ischemia due to renal artery stenosis (RAS) is an important cause of secondary hypertension and renal insufficiency. Several methods are available to diagnose RAS; however, the identification of clinically significant lesions remains problematic. We measured the translesional systolic pressure gradient (TSPG) with a 4 Fr catheter and a 0.014" pressure-sensing guidewire and compared these data to angiographic findings. The TSPG obtained by pressure-sensing guidewire correlated more strongly with angiographic minimal lumen diameter (r(2) = 0.801) than those obtained by 4 Fr catheter (r(2) = 0.360). The relationship of TSPG with percent stenosis was not strong, regardless of the method used (r(2) = 0.228 with pressure-sensing guidewire, 0.358 with 4 Fr catheter). Using a 0.014" pressure-sensing guidewire is effective for assessing TSPG and provides a more reliable indication of stenosis significance than use of a 4 Fr catheter.
Catheter Cardiovasc Interv 2003 Jul
PMID:Utility of a 0.014" pressure-sensing guidewire to assess renal artery translesional systolic pressure gradients. 1282 64

Experimental studies suggest that the pathogenesis of contrast media nephrotopathy is due to a combination of renal ischemia and direct tubular epithelial cell toxicity. Clinical studies to date have demonstrated a reduction in clinical contrast nephropathy with the introduction of low-osmolar and, more recently, iso-osmolar contrast media. Numerous experimental studies have examined the role of osmolality per se in the pathogenesis of contrast nephropathy, with conflicting results. Whether iso-osmolar contrast media are the least nephrotoxic iodinated contrast media needs to be determined with large prospective randomized clinical trials.
Rev Cardiovasc Med 2003
PMID:Pathogenesis of contrast-induced nephropathy: experimental and clinical observations with an emphasis on the role of osmolality. 1466 7

Hypertension is a common problem in patients with autosomal dominant polycystic kidney disease affecting both renal and patient survival. Activation of the renin-angiotensin-aldosterone system due to cyst expansion and local renal ischemia has been proposed to play an important role in the development of hypertension in autosomal dominant polycystic kidney disease. Left ventricular hypertrophy, a major cardiovascular risk factor, is also common in patients with autosomal dominant polycystic kidney disease. Both hypertension and the activation of the renin-angiotensin-aldosterone system play a role in the development of left ventricular hypertrophy in these patients. Prospective randomized results indicate that aggressive control of blood pressure is important for the optimal reversal of left ventricular hypertrophy, thereby diminishing a major risk factor for cardiovascular morbidity and mortality of patients with autosomal dominant polycystic kidney disease. There is also substantial epidemiological support for aggressive control of blood pressure in slowing renal disease progression in autosomal dominant polycystic kidney disease patients. Blockade of the renin-angiotensin-aldosterone system should be the initial approach in the treatment of hypertension in these patients.
Expert Rev Cardiovasc Ther 2004 May
PMID:Hypertension and left ventricular hypertrophy in autosomal dominant polycystic kidney disease. 1515 83

Patients with functioning renal transplant who develop abdominal aortic aneurysm can safely be treated with endovascular repair. Endovascular repair of aneurysm avoids renal ischemia associated with cross-clamping of aorta.
Cardiovasc Intervent Radiol
PMID:Endovascular repair of abdominal aortic aneurysm in a patient with renal transplant. 1546 78

Abdominal aortic aneurysm (AAA) is rarely associated witha congenital pelvic kidney. To date only 11 cases have been reported in the literature in which a solitary pelvic' kidney was associated in only 1 patient. Repair of thesaneurysm is technically demanding because the abnormal origin of the renal arteries presents the problem of renal ischemia duringaortic cross-clamping. We report a case of a 77-year-old man who was found to have an AAA associated with a congenital solitary pelvic kidney. An abdominal aortography dearly showed 2 aberrant renal arteries, one of which originated from the aortic wall just above the aortic bifurcation and the other from the left common iliac artery. At surgery, we found other associated anomalies including malrotation of the gut and a left undescended testis. The surgical procedure consisted of an aneurysmorrhaphy followed by a tube graft replacement with therenal arteries being left intact to the distal aortic wall or below. Renal preservation during aortic cross-clamping was achieved by direct perfusion of the upper renal artery with cold lactated Ringer's solution together with topical cooling with ice slush. The patient's postoperative course was uneventful. Urinary output was satisfactory and serum creatinine level remained unchanged throughout his hospital stay. The renal preservation method used in this case was simple and effective.
J Cardiovasc Surg (Torino) 2004 Oct
PMID:Abdominal aortic aneurysm repair in a patient with a congenital solitary pelvic kidney. A case report. 1573 73

Renal ischemia-reperfusion (I/R) is an important etiopathological mechanism of acute renal failure (ARF). Despite improvements in the treatment of ARF, it is associated with significant morbidity and mortality. I/R injury also occurs during renal transplantation and leads to reduced allograft survival. Sex differences have been found in I/R injury in many different organs including the kidney. Women have half the mortality of men in ARF. In animal models also, females are protected against renal I/R injury. The mechanisms by which sex affects the outcome to renal I/R injury are being actively investigated. This review will examine the evidence for gender differences in renal I/R injury and discuss the probable mechanisms by which sex affects the renal response to I/R injury.
Cardiovasc Res 2005 Sep 01
PMID:Cellular and molecular mechanisms of sex differences in renal ischemia-reperfusion injury. 1595 Feb 2

Abdominal aortic aneurysm (AAA) repair in the presence of a kidney transplant can be extremely challenging, as it carries significant risks of renal ischemia. Endovascular repair is an attractive option, as it can be performed with little or no impairment of renal arterial flow. We describe the endovascular management of a recurrent AAA in a patient with a functioning renal transplant using a custom-made aorto-uni-iliac device. We discuss the planning and the potential problems of the technique.
Cardiovasc Intervent Radiol
PMID:Endovascular abdominal aortic aneurysm repair in the presence of a kidney transplant: therapeutic considerations. 1613 81


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