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Biomedical subjects

G Chiara

Publications and source records attributed to G Chiara.

17 recordsLinked to original sources
PubMed1995

[Sports and adolescence: the effect of competitive athletics on menstrual function].

A group of 381 girls, 12 up to 19-years-old, engaging in competitive sports (athletics, basketball, dancing, gymnastics, swimming, ski-ing, tennis, volley-ball) was examined. Age at menarche and menstrual characteristics were correlated with the body weight, the competitive practice start age, the kind of the sport and the amount of training hours/week. Collected data were compared with the ones from a pool of 387 girls of equivalent mean age, not playing any sport. Delay of menarche and larger frequency of menstrual disorders, found among athletes, turned out to be directly proportional to the amount of time devoted to training and to the kind of performed sports. Irregular cycles are more frequent in athletes having a normal or lower body weight and do not normalise proceeding in sporting activities.

Adolescent↗
PubMed1988

Radioisotope evidence of varying transit of solid food in gastrectomized patients with and without dumping syndrome.

Of 29 Billroth II gastrojejunostomy patients studied by scintigraphy, 11 were dumpers and 18 were non-dumpers; of 20 controls, 11 were patients with different gastric complaints and 9 volunteers with no history of gastrointestinal pathology. The tracer used was human albumin microspheres labelled with 99mTc, mixed thoroughly with a fresh scrambled egg, cooked as an omelet and eaten as a sandwich with white toasted bread. The transit and emptying of the radiolabelled meal in the gastric and derivative loop areas were followed with gamma camera 90-120 min. In the dumpers half-emptying times were significantly shorter than in the controls; in the non-dumpers they were even shorter. Dynamic selective analysis of the radiolabelled food transit through derivative afferent and efferent loops showed, on the other hand, different patterns for the two groups of gastroresected patients: the progression of propulsive waves was very irregular and constantly hyperperistaltic only in the dumpers.

Administration, Oral↗
PubMed1979

[The effect of estrogens in the etiopathogenesis of endometrial adenocarcinoma].

Recent data suggesting that oestrogens also encourage the onset of adenocarcinoma of the endometrium in man are reviewed. Emphasis is placed on the fact that this is most likely to occur when prolonged oestrogeni stimulation is not suitably opposed by progesterone. It is felt that the latter, or its synthetic homologues, should be employed in all long-standing cases of exogenous or endogenous hyperoestrogenism.

Adenocarcinoma↗
PubMedDate not supplied

[Cardiac rhythm disorder in infection caused by cytomegalovirus in patients with kidney transplant].

A higher incidence of arrhythmias was observed in 16 renal allograft recipients infected with Cytomegalovirus (CMV), as compared to 26 patients who were transplanted during the same period and did not contract the infection (43.7% vs. 3.8%; p less than 0.01). There was a highly significant difference in the incidence of sinus tachycardia (37.5% infected vs. 0% not infected; p less than 0.005), while the incidences of atrial fibrillation and ventricular ectopic beats were not significantly different. The arrhythmias always appeared in the early phases of the infection and disappeared after a certain period, lasting from one week to months. It is proposed that arrhythmias arising during CMV infection may be due to a myocardial CMV involvement.

Adult↗
PubMedDate not supplied

[Dynamics of food transit in gastrectomized patients with and without dumping syndrome studied with the gamma camera and a marked meal].

Scintigraphy was performed on a group of patients following the administration of a solid radiolabelled meal. As a tracer, human albumin microspheres were used with 99mTc, mixed with fresh scrambled eggs, eaten as a sandwich in two slices of white bread. The analysis of transit and emptying-rate of the radiolabelled meal in the gastric or derivative loop areas was performed by means of a medium field (300 mm) gamma camera interfaced with a digital computer; the data were collected at 15" frames for 90'-120'. Twenty-nine patients were examined who had undergone sub-total gastrectomy: 11 of them were "dumpers" and 18 "non-dumpers"; moreover, 9 volunteers without any history of gastrointestinal diseases and 11 patients with different gastric disorders were checked. In the first group of gastrectomized patients the half-emptying time (T50) was significantly shorter than in the 11 people being checked (Md = 27.5 +/- 10.8 versus 69.6 +/- 19 minutes); in "non-dumpers" T50 was even shorter (Md = 24.2 +/- 13 min). There was no significant statistical difference between the two classes of gastroresected patients in both T50 and emptying-rate of the radioactive solid food, which excludes the accelerated transit as a factor in the functional post-prandial symptoms of the dumping syndrome. On the contrary, the dynamic selective analysis of the radiolabelled food transit through derivative afferent and efferent loops showed different patterns in the two groups of gastroresected patients: the progression of the propulsive wave was very irregular and constantly hyperperistaltic only in the dumpers.

Adult↗