Biomedical subjects
Publications and source records attributed to F Serino.
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A new technique for the construction of a bladder tube, using a Poly CS-57 stapler, has been tested on six pigs. With this procedure the operative time is shortened without complications. In fact, no crystal formation, dehiscence or infection was observed during a 3 month follow-up.
Blood levels of CoQ10 were found to be lower in patients affected by hyperthyroidism and in athletes during a severe training period. In patients who had received a kidney transplant decreasing CoQ10 levels were found, during the first 30 min after transplant, in the blood leaving the newly transplanted organ. No decrease was detectable in patients who had received the kidney from a sibling. It may reasonably be hypothesized that the ischaemia/reperfusion damage is responsible for a certain degree of impoverishment of CoQ10, leading to a CoQ10 uptake from perfusing blood. A comparable trend was also evident in liver transplants. Low CoQ10 plasma levels may therefore reflect increased metabolic needs from various tissues, on the basis of increased overall metabolic rate and/or peroxidative damage.
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Over a one-year period 1,000 duplex Doppler evaluations were performed in 70 patients submitted to kidney transplantation for end-stage renal failure. Duplex monitoring was performed to evaluate transplant status from hemodynamic patterns of the graft arteries. A duplex scanner with a 3.75 MHz sector transducer was used; pulsed Doppler was utilized to detect blood flow velocities in the main renal, segmental, interlobar and arcuate arteries. Arterial signals were quantified through a pulsatility index (PI). Three cases of acute rejection (AR), 9 cases of chronic rejection (CR), 2 cases of cyclosporine nephrotoxicity (Csa Tox), and 4 cases of acute tubular necrosis (ATN) were recognized and biopsy proved. At each arterial site PI values of normally functioning allografts were lower than 1.5; AR patients showed PI values ranging from 1.7 to 3.1, promptly lowered by immunosuppressive treatment. CR patients had a spectrum of PI from 0.5 to 3.1. Patients with Csa Tox and ATN showed in all the explored sites normal arterial signals and thus normal PI values. PI variations reflect even slight blood flow reductions due to immunologically mediated increases in intrarenal arterial resistances. Duplex sonography of allografted kidneys shows great diagnostic attitudes in the noninvasive characterization of transplant malfunction.
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