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Biomedical subjects

F Latteri

Publications and source records attributed to F Latteri.

At least 55 records · Page 3Linked to original sources
PubMed1989

[Somatostatin in the treatment of acute pancreatitis and prevention of postoperative acute pancreatitis. Personal experience].

Authors' personal experience is reported in the use of somatostatin for the treatment of acute pancreatitis and after bilio-pancreatic surgery. The drug has proved to be highly effective in reducing the pain and in controlling the biohumoral balance. The preliminary results appear to confirm the opinion that somatostatin is a major therapeutic tool in the treatment of bilio-pancreatic diseases.

Acute Disease↗
PubMed1988

Radio-hyperthermia for subcutaneous metastasis of hemangiopericytoma of the mediastinum: case report.

Hemangiopericytoma is a rare type of neoplasia originating from the Zimmermann pericytes and can arise in numerous sites. As it is difficult to correlate the histologic aspect with the prognosis, it was considered advisable to take account of other factors such as age and tumoral site. Aggressive surgery followed by irradiation therapy is suggested as the most suitable management. Hyperthermia also was adopted in treating subcutaneous metastasis, but its role has yet to be fully defined.

Age Factors↗
PubMed1988

Leiomyosarcoma of the spermatic cord. Case report and review of the literature.

An additional case of leiomyosarcoma of spermatic cord which brings the total reported number to 49, is described. The case is compared with the others and further data on histogenesis and histological behaviour of the tumor, are given. Surgical treatment and role of radiotherapy and chemotherapy, are discussed.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1987

Relationship between the efficiency of muscular work during jumping and the energetics of running.

The running economy of seventeen athletes was studied during running at a low speed (3.3 m X s-1) on a motor-driven treadmill. The net energetic cost during running expressed in kJ X kg-1 X km-1 was on average 4.06. As expected, a positive relationship was found between the energetic cost and the percentage of fast twitch fibres (r = 0.60, n = 17, p less than 0.01). In addition, the mechanical efficiency during two different series of jumps performed with and without prestretch was measured in thirteen subjects. The effect of prestretch on muscle economy was represented by the ratio between the efficiency of muscular work performed during prestretch jumps and the corresponding value calculated in no prestretch conditions. This ratio demonstrated a statistically significant relationship with energy expenditure during running (r = -0.66, n = 13, P less than 0.01), suggesting that the elastic behaviour of leg extensor muscles is similar in running and jumping if the speeds of muscular contraction during eccentric and concentric work are of similar magnitudes.

Adult↗
PubMed1987

The effect of pre-stretch on mechanical efficiency of human skeletal muscle.

The mechanical efficiency of positive work was studied in six subjects performing three different types of exercises. On the first occasion the subjects ran on a motor-driven treadmill at 3.33 m s-1; the second and the third exercises consisted of performing rhythmical vertical jumps for 1 min both in rebound (RJ) and no-rebound (NRJ) conditions. The mechanical efficiency calculated in NRJ, which reflects only the conversion of biochemical energy into mechanical work, was found to be lower than the corresponding observation in RJ, 17.2 vs. 27.8% (P less than 0.001), respectively. These differences could not be explained by only the storage and recoil of elastic energy occurring in RJ compared with NRJ. The calculated extra work delivered 'free' was greater than the potential elastic energy which could be stored within the leg extensor muscles (187 vs. 124 J for each jump, P less than 0.05). It is likely that other factors might be responsible for the extra work found in NRJ. It was suggested that the difference in the length of time to perform positive work between a simple shortening contraction and a stretch-shortening muscular activity could be also responsible for the enhanced efficiency observed in RJ. This suggestion was supported by the high relationship (P less than 0.001) found between the time to perform positive work and the mechanical efficiency measured in jumping and estimated during running.

Adult↗
PubMed1986

The effect of fatigue on store and re-use of elastic energy in slow and fast types of human skeletal muscle.

Stretch-shortening exercises are characterized by enhancement of performance when compared to the work output performed in shortening conditions. There is evidence that fast subjects are unable to re-use great amounts of elastic energy during stretch-shortening cycles performed with slow stretching speed and large stretching length. In the present study, 14 subjects possessing different fibre types in m. vastus lateralis performed vertical jumps with and without preliminary countermovement and with large angular displacement and slow stretching speed The jumping tests were executed before and immediately after fatigue induced by short intense exercises (60 s of continuous rebound jumping). The results indicated that the percentage of re-use of elastic energy was more pronounced in slow subjects compared to fast ones during the test performed before fatigue (28.3% vs. 22.8%). In contrast fast subjects demonstrated a greater percentage re-use of elastic energy than slow ones after fatigue (32% vs. 22.5%). Similarly, the negative relationship observed before fatigue, between the percentage of re-use of elastic energy and percentage of fast twitch fibres (r = 0.50, n = 14, P less than 0.05), was reversed after fatigue (r = 0.55, n = 14, P less than 0.05). The results can be interpreted through differences in sarcomere cross-bridges life-times between fast and slow twitch muscle fibres. The slow twitch-type muscle fibre may be able to retain the cross-bridge attachment for a longer period of time during no fatigued conditions, and therefore it may utilize elastic energy better in slow type ballistic motion. On the other hand, fast twitch type muscle fibres are more affected by fatigue, which might have induced a remarkable decrease of the cross-bridge attachment detachment cycle. Decrease of the cross-bridge rate cycle might allow fast twitch-type muscle fibres to retain longer the elastic energy stored during the stretching phase and then re-use it during positive phase.

Adult↗
PubMed1986

Doppler test after microvascular anastomoses and evaluation of somatostatin administration in segmental canine pancreas autotransplantation. A preliminary study.

Segmental pancreatic transplantation still involves a certain number of possible technical complications. The experimental studies in dogs reported here evaluate the effectiveness of vascular microanastomoses using doppler velocimetry in two groups of dogs which underwent segmental pancreatic autotransplantation. One group was protected by intraoperative somatostatin infusion, while the other was kept as control. The obtained results indicate that the doppler-test revealed early vascular complications (2/20 animals) and that somatostatin administration may play a major role in the prophylaxis of pancreatitis.

Animals↗
PubMed1984

The influence of extra load on the mechanical behavior of skeletal muscle.

Eleven international jumpers and throwers engaged in year round training were divided into experimental (n = 6) and control (n = 5) groups. The experimental group was tested before and after a 3 weeks simulated hypergravity period, and again 4 weeks after the hypergravity period. The high gravity condition was created by wearing a vest weighing about 13% of the subjects body weight. The vest was worn from morning to evening including the training sessions, and only removed during sleep. The daily training of all subjects consisted of classical weight training and jumping drills. No changes in the ordinary training program were allowed in the experimental group, except for the use of the vest. Vertical jumps, drop jumps and a 15 s continuous jumping test were used to measure the explosive power characteristics of the subjects. After the hypergravity period the experimental subjects demonstrated significant (5-10%, P less than 0.05-0.01) improvements in most of the variables studied: however, 4 weeks after cessation of the high gravity period they tended to return towards the starting values. No changes were observed in the results of the control group. The improvement observed in the experimental subjects was explained as fast adaptation to the simulated high gravity field. It is suggested that adaptation had occurred both in neuromuscular functions and in metabolic processes.

Adult↗