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Biomedical subjects

S Morini

Publications and source records attributed to S Morini.

At least 73 records · Page 4Linked to original sources
PubMed1996

Influence of arbuscular mycorrhizae and phosphate fertilization on shoot apical growth of micropropagated apple and plum rootstocks.

We studied the effects of phosphate fertilization and inoculation with the arbuscular mycorrhizal fungi Glomus mosseae (Nicol. and Gerd.) Gerdmann and Trappe, Glomus intraradices Schenck and Smith or Glomus viscosum Nicolson on shoot apical growth of plantlets that had been micropropagated from MM 106 apple (Malus pumila L.) and Mr.S. 2/5 plum (Prunus cerasifera Ehrh.) rootstocks. Unfertilized and non-mycorrhizal plantlets showed no apical growth during the post in vitro acclimation phase, whereas P fertilization induced early resumption of shoot apical growth. Growth enhancement and percentage of actively growing apices of mycorrhizal-inoculated plantlets were comparable to those obtained in plantlets fertilized with P. Furthermore, tissue P concentrations of mycorrhizal plantlets were similar to those of plantlets fertilized with P. We conclude that mycorrhizal inoculation can be used as a biotechnological tool to overcome blocked apical growth and to reduce chemical inputs, especially P inputs, to micropropagated fruit trees.

Journal Article↗
PubMed1995

Arbuscular mycorrhizal induced changes to plant growth and root system morphology in Prunus cerasifera.

We compared root system morphogenesis of micropropogated transplants of Prunus cerasifera L. inoculated with either of the arbuscular mycorrhizal (AM) fungi Glomus mosseae or Glomus intraradices or with the ericoid mycorrhizal species Hymenoscyphus ericae. All plants were grown in sand culture, irrigated with a nutrient solution that included a soluble source of phosphorus, for 75 days after transplanting. Arbuscular mycorrhizal colonization increased both the survival and growth (by over 100%) of transplants compared with either uninoculated controls or transplants inoculated with H. ericae. Arbuscular mycorrhizal colonization increased root, stem and leaf weights, leaf area, root length and specific leaf area, and it decreased root length/leaf area ratio, root/shoot weight ratio and specific root length. Both uptake of phosphorus and its concentration in leaves were increased by AM infection, although the time course of the relationships between intensity of AM infection and P nutrition were complex and suggested a role for factors other than nutrition. The time course for the development of infection varied. It was most rapid with G. mosseae, but it was ultimately higher with G. intraradices. None of the treatments significantly affected the lengths of adventitious roots or the first-, second- or third-order laterals that developed from them. Arbuscular mycorrhizal colonization increased the intensity of branching in all root orders with the effect being most obvious on first-order lateral roots where the number of branches increased from under 100 to over 300 brances m(-1). As a result, although first-order laterals made up 55% of the root systems of control plants, the comparable value was 36% in AM-infected plants. In contrast, second-order laterals represented 25% of control root systems, but 50% of AM-colonized root systems. Glomus intraradices but not G. mosseae increased root diameter. Anatomical studies revealed no changes in the overall form of the root tip, although there were changes in the diameter of the root cap, cell numbers and cell size. Hymenoscyphus ericae increased the duration of the metaphase index. Both AM fungal treatments increased the concentrations of soluble proteins in root extracts and modified the protein profiles by the elimination and addition of protein bands detected by PAGE analysis. We conclude that AM fungal inoculation influenced processes in the root system at different levels, but not all effects were due to improved P nutrition or increased physiological age.

Journal Article↗
PubMed1994

[The immune changes in the patient with obstructive jaundice: their onset and reversibility after drainage].

Several clinical and experimental studies have demonstrated that the high incidence of septic complications and the high mortality of surgery and invasive diagnostic and therapeutic procedures (ERCP and PTC) in obstructive jaundiced patients are mostly secondary to immune impairment (deficit of Kupffer's cells phagocytic activity and of cell-mediated immunity). The fundamental role of endotoxaemia, that's tightly related to stopped defluxion of biliary salts into the bowel, with bacterial flora increase and secondary passage of germs and toxins into portal and systemic circulation, has recently been demonstrated in the pathogenesis of the main homeostatic alterations in cholestasis (immunodeficiency, disorders of coagulation and renal functionality). This pathogenetic hypothesis explains not only high morbidity and mortality rates, but also the failures of external biliary drainage. The only treatment able to oppose endotoxaemia is internal biliary drainage, endoscopic or percutaneous. These techniques allow the defluxion of biliary salts into the bowel and a relatively quick restore of homeostasis. The authors after having treated high-risk jaundiced patients with internal endoscopic biliary drainage and surgical treatment (after 20-30 days), report excellent results.

Adult↗
PubMed1993

Familial varices of the small and large bowel.

Two familial cases of varices confined to the small and the large bowel are reported. Both patients were diagnosed in advanced age because of recurrent intestinal bleeding. The study of the entire gastrointestinal tract revealed an unexpected wide involvement and the primary nature of the varices. Moreover, both patients had coexistent adenomatous polyps.

Aged↗
PubMed1991

Functional anatomy of the shoulder: first reliefs with polyarticular goniometer.

The aim of this study is to explain the basic principles of functional anatomy of the shoulder, and to give further data on the maximum mobility of the upper limb. The measurement of the articular movements was performed using a new model of polyarticular goniometer. The discussion of these results gives way to further possibilities of research, which are useful for the functional evaluation of the athlete in sports medicine.

Adolescent↗
PubMed1989

[Sulglicotide in non-ulcerous dyspepsia].

In an open study, the clinical efficacy of sulglycotide was tested in patients with non-ulcerous dyspepsia (NUD). Outpatients with dyspeptic symptoms of at least 3-months' standing were entered into the study; diagnosis was based on history, clinical findings and endoscopy. Forty-four patients could be evaluated after 8 weeks' treatment with sulglycotide (200 mg t.i.d. orally). Treatment results were checked endoscopically and on the basis of changes in subjective symptoms (heartburn, epigastric pain, nausea, vomiting, postprandial sense of fullness, eructations, regurgitation, all of which were quantified on an analogic scale from 0 = absent to 3 = intense). Treatment with sulglycotide led to marked and significant improvement of clinical symptoms of NUD (p less than 0.05 vs. baseline) and of macroscopic endoscopic findings recorded at entry. It is concluded that sulglycotide is a valid therapeutic choice for patients suffering from NUD.

Anti-Ulcer Agents↗
PubMed1988

Association of colonic diverticula with adenomas and carcinomas. A colonoscopic experience.

A case control study of 150 individuals with colonic symptoms and diverticular disease diagnosed by total colonoscopy was performed to ascertain whether adenomas and carcinomas are detected with a higher frequency in these patients than in matched controls with symptoms but not diverticular disease. Adenomas and carcinomas were seen in 36 percent of the patients and in 17 percent of the controls (P less than .001); the overall odds ratio was calculated to be 3.0 (95 percent confidence interval +/- 1.8). When examined separately, adenomas maintained their significantly higher frequency (27 vs. 10 percent, P less than .001), while no difference was observed as regards carcinomas (9 vs. 7 percent). The odds ratios for adenomas and carcinomas were calculated to be 3.5 +/- 2.5 and 1.4 +/- 1.4, respectively. From the fifth to eighth decades there was a fourfold increase in premalignant and malignant lesions in the patient group and a twofold increase in controls. With relation to sex, a statistically significant difference was reached in men but not in women in the sample examined. These data show that symptomatic patients with colonic diverticula have more frequent adenomas, but not carcinomas, than symptomatic control matched by sex and age.

Adenoma↗
PubMed1987

Laxative consumption in chronic nonorganic constipation.

We looked at laxative consumption and its relationship to bowel habits, total gastrointestinal transit time (TGITT), and symptoms in patients with chronic nonorganic constipation. Of the patients, 87.9% used laxative, 30% habitually. Laxative intake increased with age, so that habitual consumption was more frequent in patients with long-standing (greater than 10 years) constipation. Although habitual laxative users had a consistent trend toward lower bowel frequency and prolonged TGITT, no relationship was found among intake and observed bowel frequency, TGITT, or large bowel segmental transit time. Although laxatives induced more satisfactory or less difficult evacuations, they also caused diarrhea and mucus in the stool. Laxative consumption did not bring about any detectable improvement in the abdominal or extraabdominal symptoms usually associated with constipation.

Adolescent↗
PubMed1984

[Value of the study of occult fecal blood with Hemoccult II in 211 symptomatic patients controlled by total colonoscopy].

211 possibly neoplastic patients were given total colonoscopies after Hemoccult II test. The purpose of the experiment was to judge the value of occult faecal blood tests in the diagnosis of colonic neoplasias. Positive test results were obtained in 52 of whom 5 were found to have carcinomas and 17 polyps. Negative Hemoccult II results were produced in 159 patients of whom 6 had carcinomas and 54 polyps. All carcinoma patients with positive Hemoccult II results had rectal bleeding, 50% of those with negative tests results. Among polyp patients, 53% of those with Hemoccult II positive reported rectal bleeding, 60% of those with negative test results. Thus Hemoccult II is shown to be insufficiently sensitive to be of much value in mass screenings. It is suggested that a more sensitive test should be used for surveys of occult faecal blood.

Adult↗