Ultrasound diagnosis and guided biopsy in renal actinomycosis.

We report the case of a 45-year-old man with 3 months malaise, in whom ultrasound showed an atypical tumour of the right kidney. Ultrasound-guided fine needle biopsy led to a diagnosis of renal actinomycosis.

Absorption and fate of L- and D-lactic acid in ruminants.

Lactic acid is produced in significant amounts in the rumen on rations rich in easily digestible carbohydrates such as starch and sugars. If high amounts of concentrates, containing starch and sugars, are fed to high lactating dairy cows, lactic acid concentrations in rumen fluid up to 80 mmol/l can be found. If such high concentrations of lactic acid are consistent during longer periods of time, rumen acidosis may arise, causing disfunction and necrosis of rumen epithelium.

Lactate transport across the bovine rumen epithelium in vitro.

The in vitro transport of L-lactate across rumen epithelium was found to be a passive, mass-action regulated diffusion, and no saturable transport mechanisms were involved at concentrations from 2-20 mmol/L. During this increase in L-lactate concentrations the epithelial resistance and potential difference increased significantly, indicating an epithelial change towards a more tight epithelium. The net sodium transport was significantly reduced by 45% at 20 mmol/L lactate as compared to lactate free conditions.

Adenosine deaminase and porcine meat quality. II. Effects of adenosine analogues on plasma free fatty acids, glucose and lactate in pigs representing high and low adenosine deaminase red cell activity.

The adenosine analogues 5'-(N-ethyl) carboxamidoadenosine (NECA) and N6-(phenylisopropyl) adenosine (R-PIA) were shown to differ in their effect on the plasma level of free fatty acids (FFA), glucose and lactate in pigs representing low (Ada 0) and high (Ada A) red cell adenosine deaminase activity. At the same dosage range (0.001-0.

Adenosine deaminase and porcine meat quality. I. Effect of dipyridamole on plasma free fatty acids, glucose, lactate and c-AMP in pigs representing high and low red cell adenosine deaminase activity.

The effect of dipyridamole--an adenosine uptake inhibitor--on the plasma concentration of free fatty acids (FFA), glucose, lactate and cyclic adenosine monophosphate (cAMP) has been examined in 2 groups of Landrace pigs representing low (Ada 0) and high (Ada A) red cell adenosine deaminase (Ada) activity. Pigs fitted with a jugular vein catheter were given dipyridamole (0.16 mg/kg/min) over a period of 30 min.