Ghrelin Improves Renal Function in Mice with Ischemic Acute Renal Failure

Tubular transport abnormalities have recently been characterized in a rabbit model of ischemic acute renal failure (ARF). These studies demonstrated severe observable morphologic and functional changes in the proximal nephron together with functional changes in the distal nephron. Tubular debris was often produced by perfusion of proximal nephron segments. In the present study, agents used to prevent ARF were tested in this rabbit model of ARF. Rabbits were infused with either 5% body wt 5% manitol or 20 micrograms . kg-1 . min-1 furosemide in 5% body wt normal saline for the 60 min preceding 60 min of total renal ischemia. Mannitol 1) prevented the development of ARF, 2) maintained fluid reabsorption in the proximal convoluted tubule (PCT) (0.59 +/- 0.03 vs. 0.52 +/- 0.1 nl . mm-1 . min-1) and proximal straight tubule (PST) (0.34 +/- 0.05 vs. 0.39 +/- 0.07 nl . mm-1 . min-1), 3) depressed NaCl reabsorption in the cortical thick ascending limb of Henle's loop (TALH), and 4) did not prevent a decrease in ADH-mediated osmotic water flow in the cortical collecting tubule (CCT). Furosemide 1) partially preserved renal function, 2) partially protected the PCT (0.63 +/- 0.05 vs. 0.38 +/- 0.04 nl . mm-1 . min-1) and PST (0.32 +/- 0.04 vs. 0.22 +/- 0.02 nl . mm-1 . min-1), and 3) did not change the transport capacity of the TALH or the ADH response of the CCT. Preservation of proximal nephron integrity was also reflected by the absence of debris formation. There is a direct relation between an agent's ability to protect the functional integrity of the cells of the proximal nephron and its ability to preserve renal function.

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Effects of Urodilatin and Diltiazem on Renal Function in Ischemic Acute Renal Failure in the Rat

American Journal of Nephrology ◽

10.1159/000168876 ◽

1995 ◽

Vol 15 (5) ◽

pp. 418-426 ◽

Cited By ~ 5

Author(s):

Lothar Schramm ◽

Ekkehart Heidbreder ◽

Kathrin Kartenbender ◽

Anselm Schmitt ◽

Josef Zimmermann ◽

...

Keyword(s):

Renal Failure ◽

Renal Function ◽

Acute Renal Failure ◽

Ischemic Acute Renal Failure

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Amelioration of ischemic acute renal failure by dietary fish oil administration in conscious dogs.

Journal of the American Society of Nephrology ◽

10.1681/asn.v361312 ◽

1992 ◽

Vol 3 (6) ◽

pp. 1312-1320

Author(s):

H H Neumayer ◽

M Heinrich ◽

M Schmissas ◽

H Haller ◽

K Wagner ◽

...

Keyword(s):

Blood Pressure ◽

Renal Failure ◽

Renal Function ◽

Acute Renal Failure ◽

Fish Oil ◽

Urine Volume ◽

Cytosolic Calcium ◽

Unilateral Nephrectomy ◽

Dietary Fish ◽

Ischemic Acute Renal Failure

The hypothesis that dietary fish oil would protect dogs from ischemic acute renal failure was tested. Fish oil (eicosapentaenoic acid, 55 mg/kg per day, and docosahexaenoic acid, 40 mg/kg per day was given to eight instrumented, female, beagle dogs for 6 wk, while seven control dogs received vehicle. After 3 wk, unilateral nephrectomy was performed and a pneumatic cuff with flow probe was placed around the remaining renal artery of each dog. Three weeks thereafter, the cuff was inflated for 120 min. Renal function, RBF, and prostanoid excretion were measured 24 and 72 h after ischemia. In dogs receiving fish oil, blood pressure, GFR, RBF, renal vascular resistance (RVR), cholesterol, triglycerides, and prostanoid excretion were measured weekly for 6 wk. Further, cytosolic calcium was measured before and five times after fish oil. Blood pressure decreased, serum cholesterol and triglycerides decreased, and the cytosolic calcium within platelets decreased. The urinary excretion (expressed as picograms per milligram of creatinine) of the thromboxane (TX) metabolite TXB2 and the excretion of prostaglandin (PG)E2, as well as the excretion of the PGI2 metabolite 6-keto PGF1 alpha were decreased. GFR, RBF (Cl inulin and Cl para-aminohippuric acid), and RVR were not influenced by fish oil. Unilateral nephrectomy decreased GFR and RBF and increased RVR as expected, whereas it further decreased prostanoid excretion. Acute renal ischemia caused a significant, reversible decrease in GFR and urine volume in vehicle-treated animals, whereas no significant effect on renal function or urine volume was observed in animals pretreated with fish oil.(ABSTRACT TRUNCATED AT 250 WORDS)

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Plasma D Dimer: A Useful Marker of Fibrin Breakdown in Renal Failure

Thrombosis and Haemostasis ◽

10.1055/s-0038-1646627 ◽

1989 ◽

Vol 61 (03) ◽

pp. 522-525 ◽

Cited By ~ 32

Author(s):

M P Gordge ◽

R W Faint ◽

P B Rylance ◽

H Ireland ◽

D A Lane ◽

...

Keyword(s):

Renal Failure ◽

Renal Function ◽

Acute Renal Failure ◽

Monoclonal Antibodies ◽

Diabetic Nephropathy ◽

Renal Disease ◽

Plasma Concentrations ◽

Significant Negative Correlation ◽

Healthy Controls ◽

D Dimer

SummaryD dimer and other large fragments produced during the breakdown of crosslinked fibrin may be measured by enzyme immunoassay using monoclonal antibodies. In 91 patients with renal disease and varying degrees of renal dysfunction, plasma D dimer showed no correlation with renal function, whereas FgE antigen, a fibrinogen derivative which is known to be cleared in part by the kidney, showed a significant negative correlation with creatinine clearance. Plasma concentrations of D dimer were, however, increased in patients with chronic renal failure (244 ± 3l ng/ml) (mean ± SEM) and diabetic nephropathy (308 ± 74 ng/ml), when compared with healthy controls (96 ± 13 ng/ml), and grossly elevated in patients with acute renal failure (2,451 ± 1,007 ng/ml). The results indicate an increase in fibrin formation and lysis, and not simply reduced elimination of D dimer by the kidneys, and are further evidence of activated coagulation in renal disease. D dimer appears to be a useful marker of fibrin breakdown in renal failure.

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Effect of Curcuma longa and Galega orientalis on renal function in rats with experimental diabetes mellitus and acute renal failure

ZHurnal «Patologicheskaia fiziologiia i eksperimental`naia terapiia» ◽

10.25557/0031-2991.2019.04.88-95 ◽

2019 ◽

pp. 88-95

Author(s):

Р.И. Айзман ◽

А.П. Козлова ◽

Е.И. Гордеева ◽

М.С. Головин ◽

Г.А. Корощенко ◽

...

Keyword(s):

Diabetes Mellitus ◽

Renal Failure ◽

Renal Function ◽

Acute Renal Failure ◽

Experimental Diabetes ◽

Curcuma Longa ◽

Diabetic Rats ◽

Standard Diet ◽

Experimental Diabetes Mellitus ◽

Galega Orientalis

Цель - исследование влияния куркумы длинной и галеги восточной на осмо- и ионорегулирующую функции почек крыс при аллоксан-индуцированном сахарном диабете и острой почечной недостаточности в эксперименте. Методика. Эксперименты выполнены на самцах крыс Wistar (n=70) с моделью сахарного диабета (1-я серия) и острой почечной недостаточности (2-я серия). В обеих сериях животные были поделены на 3 группы: крыс 1-й группы содержали на стандартном корме, крысам остальных групп в корм добавляли куркуму (2-я группа) или галегу (3-я группа) (2% от массы корма). На 7-е сут эксперимента проводили исследование диуретической и ионоуретической функций почек натощак и после 5% водной нагрузки. Концентрацию ионов в моче и плазме определяли методом пламенной фотометрии; осмотическую концентрацию биологических жидкостей - методом криоскопии; биохимические показатели крови - колориметрическим методом. Результаты. У животных с сахарным диабетом фоновый диурез, а также экскреция натрия и калия были статистически значимо выше, чем у контрольных животных. При острой почечной недостаточности наблюдался более низкий уровень диуреза и ионоуреза, особенно после водной нагрузки. Прием куркумы и галеги вызывал улучшение осмо- и ионорегулирующей функции почек у крыс с сахарным диабетом, и практически не влиял на эти функции почек при острой почечной недостаточности. Заключение. При сахарном диабете оба фитопрепарата вызывали понижение концентрации глюкозы, креатинина, мочевины и улучшение ионно-осмотических показателей плазмы крови, при этом эффект куркумы был выражен отчетливее. При острой почечной недостаточности эти фитопрепараты не давали описанного эффекта. Aim. To study effects of the phytomedicines, Curcuma longa and Galega orientalis, on osmosis- and ion-regulating renal functions in rats with experimental diabetes mellitus (DM) and acute renal failure (ARF). Methods. Experiments were performed in two series on Wistar male rats (n=70) with modeled diabetes mellitus (series 1) and acute renal failure (series 2). In each series, the animals were divided into 3 groups, 1) rats of group 1 receiving a standard diet; 2) rats of groups 2 and 3 receiving a standard diet supplemented with turmeric or galega (2% of food weight), respectively. On the 7th day of the experiment, the diuretic and ionuretic renal function was studied in fasting state and after 5% water loading. Concentrations of ions in urine and plasma were determined by flame photometry; osmotic concentrations of biological fluids were measured by cryoscopy; blood biochemical parameters were measured by colorimetry. Results. In diabetic rats, background diuresis and sodium and potassium excretion were significantly higher than in the control animals. In rats with acute renal failure, diuresis and ionuresis were significantly lower, particularly after the water loading. Turmeric and galega supplementation improved the osmotic and ion-regulating renal function in diabetic rats and left practically unchanged these functions in rats with acute renal failure. Conclusion. In rats with diabetes mellitus, both herbal remedies reduced concentrations of glucose, creatinine, and urea and improved ion-osmotic parameters of blood plasma with a more pronounced effect of turmeric. In acute renal failure, these phytomedicines did not produce the described effects.

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Faculty Opinions recommendation of Predictors of postoperative acute renal failure after noncardiac surgery in patients with previously normal renal function.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1099139.555351 ◽

2008 ◽

Author(s):

Lee Fleisher ◽

Michael Banks

Keyword(s):

Renal Failure ◽

Renal Function ◽

Acute Renal Failure ◽

Normal Renal Function ◽

Noncardiac Surgery

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Simultaneous blockade of endothelin A and B receptors in ischemic acute renal failure is detrimental to long-term kidney function

Kidney International ◽

10.1046/j.1523-1755.2001.0590041333.x ◽

2001 ◽

Vol 59 (4) ◽

pp. 1333-1341 ◽

Cited By ~ 55

Author(s):

Josephine Maree Forbes ◽

Timothy David Hewitson ◽

Gavin James Becker ◽

Colin Lindsay Jones

Keyword(s):

Renal Failure ◽

Acute Renal Failure ◽

Kidney Function ◽

Endothelin A ◽

Ischemic Acute Renal Failure

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Predictors of Postoperative Acute Renal Failure after Noncardiac Surgery in Patients with Previously Normal Renal Function

Anesthesiology ◽

10.1097/01.anes.0000290588.29668.38 ◽

2007 ◽

Vol 107 (6) ◽

pp. 892-902 ◽

Cited By ~ 323

Author(s):

Sachin Kheterpal ◽

Kevin K. Tremper ◽

Michael J. Englesbe ◽

Michael O’Reilly ◽

Amy M. Shanks ◽

...

Keyword(s):

Renal Failure ◽

Renal Function ◽

Acute Renal Failure ◽

Creatinine Clearance ◽

Normal Renal Function ◽

Noncardiac Surgery ◽

Intraoperative Management ◽

All Cause Mortality ◽

Calculated Creatinine Clearance ◽

Preoperative Predictors

Background The authors investigated the incidence and risk factors for postoperative acute renal failure after major noncardiac surgery among patients with previously normal renal function. Methods Adult patients undergoing major noncardiac surgery with a preoperative calculated creatinine clearance of 80 ml/min or greater were included in a prospective, observational study at a single tertiary care university hospital. Patients were followed for the development of acute renal failure (defined as a calculated creatinine clearance of 50 ml/min or less) within the first 7 postoperative days. Patient preoperative characteristics and intraoperative anesthetic management were evaluated for associations with acute renal failure. Thirty-day, 60-day, and 1-yr all-cause mortality was also evaluated. Results A total of 65,043 cases between 2003 and 2006 were reviewed. Of these, 15,102 patients met the inclusion criteria; 121 patients developed acute renal failure (0.8%), and 14 required renal replacement therapy (0.1%). Seven independent preoperative predictors were identified (P < 0.05): age, emergent surgery, liver disease, body mass index, high-risk surgery, peripheral vascular occlusive disease, and chronic obstructive pulmonary disease necessitating chronic bronchodilator therapy. Several intraoperative management variables were independent predictors of acute renal failure: total vasopressor dose administered, use of a vasopressor infusion, and diuretic administration. Acute renal failure was associated with increased 30-day, 60-day, and 1-yr all-cause mortality. Conclusions Several preoperative predictors previously reported to be associated with acute renal failure after cardiac surgery were also found to be associated with acute renal failure after noncardiac surgery. The use of vasopressor and diuretics is also associated with acute renal failure.

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