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Biomedical subjects

L Baratta

Publications and source records attributed to L Baratta.

49 records · Page 3Linked to original sources
PubMed1978

[The effects of testosterone on the adenohypophysis of female rat (author's transl)].

The research regards the action of rapidly and slowly absorbed testosterone in the adenohypophysis of female impuberal rats. The results are that the rapidly adsorbed testosterone if administered in small quantities stimulates the activity of synthesis in the FSH cells, if administered in large quantities stimulates the activity of synthesis both in the FSH cells and in the LH cells. The slowly absorbed testosterone stimulates again the activity of synthesis only of the FSH cells. Both rapidly absorbed and slowly absorbed testosterone inhibit the release activity in both the FSH cells and the LH cells.

Animals↗
PubMed1977

[Morphological studies of the effects of progesterone on the adenohypophysis of the impuberal female rat].

At optical microscope and at electronic microscope it has been examined the adenohypophysis of Wistar albino impuberal female rats after administration of progesterone. It has come out that the progesterone influences in different ways the activity of pituitary gonadotropic cells (FSH and LH cells) according to the quantity and according to the way it affects either rapidly or within an extended period, on intact or on spayed animals, in the morning or in the afternoon. For what concerns the influence of the hormone, it has also come out to be variable as it may concern, according to the cases, a single or both cellular types, and it can appear with symptoms of secretion, with symptoms of excretion or with both symptoms. According to the verified data, the possible ways of action of progesterone on the hypothalamo-hypophyseal unit are discussed.

Age Factors↗
PubMedDate not supplied

Tobacco smoke in the development and therapy of periodontal disease: progress and questions.

In recent years, epidemiological studies have pointed to a significant correlation between cigarette smoke and poor periodontal status. Cigarette smoking is a significant risk factor for the onset and development of periodontal disease, and an association between reduced healing response subsequent to periodontal therapies and cigarette smoking has been found. The epidemiological studies reported here are also supported by the results of an in vitro study on the cytotoxicity of two of the volatile components of cigarette smoke that we ourselves conducted, in which the investigated compounds were found to damage human gingival fibroblasts. We concluded that this damage would be reflected in periodontal health and could slow down wound healing. Patients should thus be alerted by clinicians to the risks smoking poses to oral and dental health.

Acetaldehyde↗
PubMedDate not supplied

[Role of gonadotrophins in mediating the effect of progesterone. I. Histochemical and ultrastructural studies on the rat vaginal epithelium (author's transl)].

Progesterone induced alterations in the vaginal epithelium of the rat has been studied under the following experimental conditions characterized by an abundance of deficiency of gonadotrophins: ovariectomized impuberal rats, ovariectomized adult rats (at different periods following ovariectomy), impuberal rats subjected to ovariectomy and hypophysectomy (untreated and treated with FSH, LH, HCG).

Animals↗
PubMedDate not supplied

[Rapid diagnosis of respiratory viral disease by means of indirect immunofluorescence test].

Indirect immunofluorescence test was employed to detect respiratory virus antigens in pharyngeal secretions. Parainfluenza virus type 1-3 sera gave positive results in 19 out of 40 patients with acute respiratory infections tested, mainly among children affected by "viral croup". The reliability of the test for the rapid diagnosis of respiratory infections is discussed.

Antibody Formation↗
PubMedDate not supplied

[Morphologic findings on the terminal tract of the ureter in patients with primary vesico-ureteral reflux].

Primary vesico-ureteral reflux (V.U.R.) in children has been widely investigated in several reports in the last two decades, but the morphologic aspects of refluxing vesico-ureteral junction are still incompletely codified or incompletely described. The authors report the results of a histologic study on the terminal refluxing ureter in a group of 20 patients with primitive V.U.R., random chosen from a series of over 400 subjects who underwent antireflux surgery for primitive V.U.R. at the Pediatric Surgery Department of the University of Bologna. Connections between muscular hypertrophy and reflux degree are herein reported and discussed.

Child↗
PubMedDate not supplied

[Morphological findings on the terminal tract of the ureter in patients with vesico-ureteral reflux associated with neurogenic bladder].

Vesico-ureteral reflux (VUR) associated to neurogenic bladder dysfunctions is well known as pathologic entity; in particular, its radiologic and urodynamic aspects have been widely debated in recent years, even in infancy and childhood. In our study, histologic features of the vesico-ureteral junction have been investigated in a group of patients with neurogenic bladder and VUR, who underwent antireflux surgery. Structural aspects of these vesico-ureteral junctions have been then compared to refluxing junctions taken from non-neurogenic bladders and non-refluxing junctions from normal bladders.

Child↗