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Biomedical subjects

G Testino

Publications and source records attributed to G Testino.

At least 73 records · Page 4Linked to original sources
PubMed1993

[Interferon therapy in liver cirrhosis].

Ten patients were given 3MU/3 times/week of r-interferon alpha 2b for 4 months; six patients were given 1MU/3 times/week for 4 months. The choice of these regimes has been based on the number of platelets. Among the patients treated with 9MU/week we observed a type I response (alanine-aminotransferases normalization) in 40% of cases, a type II (ALT fifty percent reduction) in 40% of cases, and a type III (no response) in 20% of cases. Among the patients treated with 3MU/week we observed a type II response in 16.7% and a type III in 83.3% of cases. Treatment of Child A liver cirrhosis with r-interferon demonstrates to rise, therefore, the same percentage of response which are obtained in the treatment of chronic active hepatitis, when the same doses are administered (9MU/week).

Aged↗
PubMed1992

Chief cell mass after short-term ranitidine treatment for duodenal ulcer.

The chief cell mass and the parietal cell mass were evaluated in endoscopically obtained biopsy specimens of fundic mucosa from 15 duodenal ulcer patients before and after ranitidine treatment. Patients were given ranitidine, 300 mg/day, for 8 weeks. Chief cell mass and parietal cell mass were expressed respectively by a "zymogenous index" (ZI) and a "parietal index" (PI), obtained by multiplying the number of cells per mm2 by the thickness of the glandular layer. From the results of this study it would appear that, in patients with duodenal ulcer, treatment with ranitidine at a dose of 300 mg/day for 8 weeks results in a significant increase in parietal cell mass and a decrease in chief cess mass.

Adult↗
PubMed1992

[Zymogenic cell mass and serum pepsinogen I: the cell secretory correlations in patients with gastric intestinal-type cancer of the corpus-fundus].

The chief cell mass and serum pepsinogen I (PGI) have been evaluated in 18 patients with gastric cancer of intestinal type of the body-fundus. Moreover, a correlation with the parietal cell mass and the maximal acid output it has been effected. The patients have been subdivided in relation to histologic condition of the fundic mucosa. In case of gastric cancer with preatrophic fundic gastritis it has been revealed hypozymogenism with normoPGI and hypoparietalism with hypochlorhydria, in case of gastric cancer with atrophic fundic gastritis it has been revealed hypozymogenism with hypoPGI and hypoparietalism with hypochlorhydria. From this experience it emerges a similar anatomic-functional profile between gastric cancer of the body-fundus and chronic fundic gastritis without cancer. In particular, it emerges that serum PGI is a good marker of atrophic fundic gastritis, but it is not discriminant between atrophic fundic gastritis and atrophic fundic gastritis associated to gastric cancer.

Adenocarcinoma↗
PubMed1991

Advanced gastric cancer of the antrum: anatomic-functional correlation between chief cell mass and serum pepsinogen I.

Chief cell mass and type I serum pepsinogen (PGI) were calculated in 19 advanced antral gastric cancer of intestinal type. Comparisons were also made with parietal cell mass and acid secretion. In gastric cancer of the antrum there is a significant decrease of the chief cell mass and of serum pepsinogen I. The patients were subdivided according to the histological findings of the fundic mucosa. In cases of antral gastric cancer with superficial fundic gastritis there is normozymogenism with hyperpepsinogenemy; with preatrophic fundic gastritis there is hypozymogenism with normopepsinogenemy; with atrophic fundic gastritis there is hypozymogenism with hypopepsinogenemy. Similar behavior of the chief cell mass between antral gastric cancer and fundic atrophic gastritis without cancer has become recognized and while the validity of PGI as a marker of fundic atrophic gastritis has emerged it does not allow discrimination between atrophic fundic gastritis and atrophic fundic gastritis associated with gastric cancer of the antrum.

Aged↗
PubMed1991

Gastric chief cell mass in chronic gastritis. Count and relationships to parietal cell mass and functional indices.

The chief cell mass, expressed as the Zymogenous Index (number of cells per mm2 multiplied by the thickness of the glandular layer) was calculated in 42 subjects with chronic gastritis, and in 40 subjects with normal gastric mucosa, and was compared with the serum concentration of Pepsinogen I (PG I), with the parietal cell mass (expressed as Parietal Index: number of cells per mm2 multiplied by the thickness of the glandular layer), and with the acid output. The results showed that there are no significant variations in the chief cells in comparison with healthy controls in the case of superficial gastritis and follicular gastritis. Conversely, in the case of pre-atrophic and atrophic gastritis there is a significant reduction in the chief cell mass. The serum PG I increases significantly in the case of superficial gastritis as compared with healthy controls, while it is equivalent in the case of follicular gastritis, decreases non-significantly in pre-atrophic gastritis and is significantly reduced in the case of atrophic gastritis. The parietal cell mass shows a behavior equivalent to that of the chief cell mass, and the acid output decreases significantly in the case of pre-atrophic and atrophic gastritis, with no significant variations in the case of superficial and follicular gastritis. On comparing the behavior of the chief cell mass with that of the parietal cell mass, it was noticed that in the most severe stages of chronic gastritis there is a more pronounced reduction of the former than of the latter.

Adult↗
PubMed1991

[Serum pepsinogen I in gastroduodenal pathology].

The diffusion of the radioimmunoassay methods for the determination of the serum pepsinogen has offered the opportunity of a direct approach to the analysis of peptic secretion. The aim of our studies has been to evaluate the behaviour of pepsinogen I in gastroduodenal pathology and to point out a possible clinical utilization. Moreover, we have examined all the relationship with the chief cell mass, parietal cell mass and hydrochloric acid secretion.

Chronic Disease↗
PubMed1990

Chief cell mass in normal gastric mucosa: relationship with serum pepsinogen I.

In the present study, a counting method for the evaluation of chief cell mass was proposed, based on the assessment of a zymogenous index (ZI) obtained by multiplying the number of cells/mm2 by the thickness of the glandular layer. Results obtained in 40 subjects with normal gastric mucosa did not show significant ZI differences between sexes. A statistically significant decrease in ZI was observed in patients above age 50, thus being directly related to the significant decrease in the thickness of the glandular parenchyma and in the number of chief cells/mm2 observed in this age group. The data obtained were in agreement with the pattern of change observed for serum pepsinogen I (PG I) whose values were related to the chief cell mass in connection with sex and age of the subjects.

Adolescent↗
PubMedDate not supplied

Gastric cyto-secretory correlations in peptic ulcer.

BACKGROUND/AIMS: Maximal acid output, parietal cell mass, serum pepsinogen A (PGA) and total peptic activity (TPA) in gastric juice were studied and compared in duodenal ulcer and in different gastric ulcer sites. METHODOLOGY: 152 peptic ulcer patients were studied. 64 cases of gastric ulcer (GU) were subdivided according to Johnsons's classification and compared with 88 duodenal ulcer (DU) patients diagnosed for the first time. 40 normal subjects were studied as controls. RESULTS: Duodenal ulcer is characterized by normo-hyperparietalism, normo-hyperchloridria and an increase in peptic activity. In cases of GU, such correlation is not only conditioned by the topographic seat of the ulcer, but by the histological condition of the gastric mucosa too. Body GU is characterized by hypoparietalism, hypochloridria, hyper-PGA and hyper-TPA. Pre-pyloric GU is characterized by normo-hyperparietalism, normo-hyperchloridria, hyper-PGA and hyper-TPA. In GU the cyto-secretory behavior is characterized by the histology of the body mucosa with prevalence of preatrophic-atrophic gastritis in case of body GU and prevalence of superficial gastritis in case of GU type II and III. CONCLUSIONS: The results confirm the anatomic-functional analogy between DU and type II and III GU. If considered from the functional point of view, these conditions differ considerably from those that are characteristic of type I GU (as they closely follow the chronic gastritis pattern).

Duodenal Ulcer↗
PubMedDate not supplied

[Gastric epithelial dysplasia].

Gastric epithelial dysplasia represents the only true histological marker of gastric cancer. In this bringing up to date, such subject is reproposed in consideration of taking into account the most recent acquisitions, subdividing gastric dysplasia into two degrees only: moderate and severe. For the first time an immunophenotypic study is made by means of the evaluation of gastric-entero-pancreatic antigens, which better identify the evolutive potential of the two degrees of gastric dysplasia and, furthermore, the clinical development is evaluated, thus showing the necessity of a strict endoscopic surveillance of such lesion.

Epithelium↗
PubMedDate not supplied

[Chief cell mass in gastric ulcer: cyto-secretory correlations].

The aim of this experience has been to evaluate the chief cell mass and serum pepsinogen I in gastric ulcer patients. Comparisons were also made with parietal cell mass and acid secretion. Chief cell mass and serum pepsinogen I are not only influenced by the localization of ulcer but, also, by the histological condition of fundic mucosa. In fact, the behaviour of serum pepsinogen I and chief cell mass in type I gastric ulcer is the same observed in case of fundic chronic gastritis without gastric ulcer. In case of gastric ulcer type I with superficial fundic gastritis it emerges normozymogenism with hyperpepsinogenemia++ I, with preatrophic fundic gastritis hypozymogenism with normopepsinogenemia, with atrophic fundic gastritis hypozymogenism with hypopepsinogenemia I. In type II and III gastric ulcer the chief cell mass and serum pepsinogen I behaviour as they do in duodenal ulcer with hyperpepsinogenemia although hypozymogenism is present.

Adult↗
PubMedDate not supplied

Role of chronic atrophic gastritis of the body-fundus and achlorhydria in the development of epithelial dysplasia and gastric carcinoma.

BACKGROUND/AIM: Chronic atrophic gastritis of the body-fundus with hypo-achlorhydria has been long since considered the precursor of gastric cancer (GC). A study has been made about the histological pattern of the body-fundic mucosa (oxyntic area) in course of preneoplastic lesions (epithelial dysplasia), associated or progressed to gastric cancer, in order to evaluate the real association with chronic atrophic gastritis and, therefore, with a reduced acid secretion. METHODOLOGY: The study of the histological condition of the body-fundic mucosa and of the acid secretion has been effected in 120 cases of epithelial dysplasia (ED) from January 1990 to November 1997. The casuistry is composed of 70 cases of low grade dysplasia (LGD) and 50 cases of high grade dysplasia (HGD). Gastric biopsy specimens were studied for dyspepsia: for each patient, at least 8 specimens were obtained from the lesion area and in surrounding areas. Besides, at least 4 biopsies have been performed in the opposite gastric region. ED diagnosis was effected according to well defined criteria. The histological study of gastric mucosa in gastritis was effected or revised in accordance with the updated Sydney system (Houston). Stimulated acid secretion was expressed as Maximal Acid Output (MAO), which is the amount of HCl produced in one hour, following stimulation with pentagastrin (6 micro-g/kg). The clinical outcome subdivision of ED was made using the criteria of Rugge et al. (12). RESULTS: HGD significantly associates with GC in comparison with LGD. The histological evaluation of the oxyntic area shows severe chronic atrophic gastritis (SCAG) in a low percentage of cases (15/120: 12.5%): LGD 9/70: 12.85% ; HGD 6/50: 12%. Complete achlorhydria has been noted in 5 cases of LGD and in 1 case of HGD only. In case of GC (43 subjects) SCAG has been evidenced in 10 cases and complete achlorhydria in 5 cases. CONCLUSIONS: From the data of the present experience emerges that the presence of SCAG of the oxyntic area in course of ED or early GC is limited to a low percentage of cases. Such concepts induce to modify some indications related to the endoscopic surveillance and, in accordance with the American Society of Gastrointestinal Endoscopy we are stating that there are no sufficient data to support subsequent endoscopic surveillance for the subjects with atrophic gastritis.

Achlorhydria↗
PubMedDate not supplied

[Changes in the zymogenic cell mass, parietal cell mass and serum pepsinogen I in patients with gastric resection for duodenal ulcer].

Aim of this experience has been to evaluate the behavior of the chief cell mass, of the parietal cell mass and of the serum pepsinogen I in patients operated on for duodenal ulcer by the Billroth II compared to patients with chronic fundic gastritis in non operated stomach and to healthy controls. From the results, even in operated patients, emerges a progressive reduction of the two cell masses, in relation to the different degree of chronic gastritis of the stump, in analogy with chronic fundic gastritis in non-operated stomach. In chronic superficial gastritis no differences emerge between operated patients and patients with chronic superficial fundic gastritis in non operated stomach, while with the getting on the inflammation, it can be observed a higher fall of the parietal cell mass in operated subjects than in non operated ones. Such differences are even greater in relation with the evaluation of the time elapsed between the operation and the evaluation of the two cell masses. Furthermore, no significant differences have emerged between the two groups of patients as for serum pepsinogen I. Such data is not discriminant between the two conditions.

Adult↗
PubMedDate not supplied

[The gastric anatomico-functional aspects (parietal cell mass, stimulated acid secretion and gastrinemia) in pernicious anemia].

We present here a study of parietal cell mass, stimulated acid secretion and basal gastrinemia both in the course of isolated chronic atrophic gastritis of the body-fundus and in chronic atrophic gastritis of the body-fundus associated with pernicious anemia. Analysis of our results evidences an overlapping cyto-secretory profile characterized by hypoparietalism with hypo-achlorhydria. The higher basal gastrinemia levels in pernicious anemia depend on the histological status of the antral mucosa--which was always normal in the patients with pernicious anemia--rather than any substantial morpho-functional differences of the body-fundus. We thus conclude that the term "atrophic gastritis" should be abolished, and that the term "chronic atrophic gastritis" be used to describe both conditions.

Anemia, Pernicious↗