The use of dilution of urea or deuterium oxide ( D 2 0 ) to estimate body water in cattle, sheep and pigs is reviewed. After equilibration, which requires about 20 min after infusion of urea and 4 to 6 h after infusion of D 2 0 , urea and D , 0 space estimated from dilution in water of blood are each closely related to total body water. Calculation of body composition from total body water can ...

Introduction.Chronic kidney disease (CKD) is a major public health problem that often goes unrecognized until late-stage disease.Patients with chronic kidney disease face with uremic toxins and hyperkalemia. Also fluid overload in CKD patients is associated with rapid decline in kidney function.Lactulose is a hyper osmotic agent and as a prebioticplays an important role in regulating serum urea...

In elasmobranch fishes, urea occurs at high concentrations (350-600 mM) in the body fluids and tissues, where it plays an important role in osmoregulation. Retention of urea by the gill against this huge blood-to-water diffusion gradient requires specialized adaptations to the epithelial cell membranes. Experiments were performed to determine the mechanisms and structural features that facilita...

The annual increase in plasma urea was measured in 253 hypertensive patients. On average there was a significant increase in plasma urea with time which did not depend on the sex of the patient or the type of hypertension. It did, however, depend on the initial level of plasma urea. A table giving the upper limits for expected annual increment may prove useful in clinical assessment. The relati...

The influence of blood pressure on the renal medullary osmotic pressure gradient was studied in hemorrhagic hypotension of hydropenic rabbits. Slice analysis was made for urea, sodium and potassium concentrations in the kidney slices. The tissue fluid osmolality was estimated as the sum of the urea concentration and 2•~electrolyte concentrations. A drop of systemic blood pressure, induced by bl...

OBJECTIVES This study was conducted to quantitatively evaluate the recovery effects of methanolic fraction Angel's wings on gentamicin (GM)-induced nephrotoxicity. MATERIAL AND METHODS Renal injury was achieved by injecting 100 mg/kg, intraperitoneally of GM in normal saline. Extract were administrated intraperitoneally at doses 200 and 400 mg/kg. Blood samples were examined for serum creatin...

Background: Exposure to environmental toxins such as organophosphates poses a great threat to the health of the public. In this work, we investigated the effects of continuous exposure to dichlorvos (DDVP) on kidney function and hematological parameters, and the possible antidote activity of Nigella sativa oil (NSO). Methods: This research was conducted in 2016, at The Animal Holding and Resea...