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Biomedical subjects

G Martinelli

Publications and source records attributed to G Martinelli.

At least 253 records · Page 14Linked to original sources
PubMed1991

Coagulation and fibrinolysis in orthotopic liver transplantation: role of the recipient's disease and use of antithrombin III concentrates. S. Orsola Working Group on Liver Transplantation.

In this study we report the data obtained from extensive haemostatic testing of 25 patients undergoing orthotopic liver transplantation and the results of an open randomized pilot trial of antithrombin III concentrate administration during surgery. Marked differences in transfusional needs and in pre- and intraoperative blood coagulation and fibrinolytic changes were observed between recipients with liver cirrhosis and those with primary biliary cirrhosis. In the former, the increases in tissue-type plasminogen activator activity, total euglobulin fibrinolytic activity, and fibrin-derived degradation products occurred earlier and were more marked, as were the signs of increased thrombin formation. Supplementation of antithrombin III concentrate during surgery failed to induce significant changes in the main parameters studied and in the transfusional needs.

Adult↗
PubMed1991

The antiemetic activity of high-dose metoclopramide and high-dose alizapride in combination with lorazepam in patients receiving cancer chemotherapy. A prospective, randomized, double-blind study.

The antiemetic efficacy of metoclopramide and lorazepam (MTC + L) versus alizapride and lorazepam (ALZ + L) was compared in 100 patients receiving chemotherapy, in a prospective randomized double-blind study. In highly emetogenic (HE) regimen (including platinum) patients received MTC 1 mg/kg or ALZ 3 mg/kg x 4 doses, and lorazepam 2.5 mg 30 min before therapy. In moderately emetogenic (ME) regimen patients received MTC 0.5 mg/kg or ALZ 1.5 mg kg x 3 doses, and lorazepam 2.5 mg 30 min before therapy. In both HE and ME regimen groups there was no statistically significant difference between MTC + L and ALZ + L treatments as regards the number of vomiting episodes, the duration of emesis and nausea, the intensity of nausea and side effects, but a statistically significant difference between treatments was found in the HE group where MTC-L was superior to ALZ + L in obtaining complete protection from vomiting (37 vs 11%, p = 0.05). No significant difference in side effects was observed.

Adolescent↗
PubMed1991

[Nuclear magnetic resonance and iron overload in thalassemia].

We assessed the iron load content in 36 beta-thalassemia patients by NMR correlating the results with serum ferritin levels. 22 of them were affected by beta-thalassemia major on hyper-transfusional regimen (Group A), 4 by beta-thalassemia intermedia (Group B) and 10 by beta-thalassemia major, who had been previously bone marrow transplanted (Group C). In A and C Groups the liver showed the lowest signal intensity on spin echo images (p less than 0.01; p less than 0.06, respectively). A significant correlation between the summation of signals obtained from all the examined organs and serum ferritin levels was observed by evaluating both all the patients globally (r = 0.78; p less than 0.001) and the A and C Group patients. This correlation was confirmed only in the liver both in all the patients (r = 0.77; p less than 0.001) and in A and C Group patients, when the signals obtained from each organ were evaluated.

Adolescent↗
PubMed1991

Phase III trial with and without lonidamine in non-small cell lung cancer.

One hundred eighty four patients with advanced inoperable non-small cell lung cancer were treated with either lonidamine (A), mitomycin-C/vindesine (B), or mitomycin-C/vindesine plus lonidamine (C) in a prospective randomized trial. The response rates for each treatment arm were 3.4% (A), 22.4% (B) and 25.9% (C), respectively. This difference is statistically significant (P less than 0.01). The median survival time for patients treated with mitomycin-C/vindesine and mitomycin-C/vindesine plus lonidamine was 194 days and 221 days, respectively. In comparison with 145 days for lonidamine alone there is a statistically significant difference in survival between the chemotherapy groups (P less than 0.01). When combined with mitomycin-C/vindesine, lonidamine induces an increase in the response rate and there is a higher proportion of patients living after 12 months of treatment (32% v 20%) in comparison to mitomycin-C/vindesine alone. The subjective tolerance of all treatment groups was very good, toxicity was only mild without major differences between the treatment arms. Combination chemotherapy with mitomycin-C/vindesine plus or minus lonidamine could prolong survival in advanced inoperable nonsmall cell lung cancer significantly without severe toxicity.

Antineoplastic Agents↗
PubMed1991

An assessment of chimeric transcript detection in CML patients after bone marrow transplantation.

The Polymerase Chain Reaction (PCR) was used to evaluate minimal residual disease in 21 Ph+ CML patients at various intervals after allogeneic bone-marrow transplantation (ABMT) by amplification of bcr-abl cDNA. All patients were cytogenetically Ph- at the moment of molecular analysis. Of these 76% were PCR negative, 24% positive for bcr-abl transcripts. 100% of the Cyclosporine A/Methotrexate treated patients (7/7) were negative. Severe chronic GvHD was twice as frequent in PCR positive patients (60%) than in negative ones (31%). The only patient who relapsed during follow up was PCR positive. The two longest survivors were PCR negative. These data are still insufficient for assessing the predictive value of PCR analysis in CML. Patients. 25 patients with Ph+ CML at diagnosis were enrolled in this study. Two died soon after BMT because of infection for failure of engraftment/early relapse, two were Ph chromosome positive and PCR+, and were therefore dismissed from this study. All remaining 21 patients were cytogenetically Ph- at the time of molecular analysis and underwent ABMT from matched donors. All patients were conditioned with cyclophosphamide and TBI: 330 cGy the three days prior to transplantation (990 cGy total, treatment B), or 200 cGy two times daily for three days (1200 cGy total, treatment A). In 3 cases the marrow was treated for GvHD prophilaxis with Campath alone or Campath plus BT 5/9 monoclonal antibodies (1). All patients were treated with Cyclosporin A (CS) 5 mg/kg i.v. from the day prior to transplantation until 25-30 days after; 9 of these were treated with CS plus Methotrexate (MTX).

Biomarkers, Tumor↗
PubMed1990

[Ileal stenosis caused by chronic granulomatous inflammation secondary to a foreign body simulating Crohn disease].

A case of ileal stenosis due to foreign body induced chronic granulomatous inflammation simulating Crohn's disease with onset on an ileo-ileostomy carried out 23 years before due to iatrogenic rupture of ileal loop following clandestine abortion is reported. After noting the problem of attributing to the foreign body alone responsibility for the stenosis, the hypothesis that it might have been an acute occurrence of Crohn's disease or the expression of an association of Crohn's disease and granulomatous inflammation due to surgical material is advanced. This for the moment is the only plausible cause. It is concluded that for accurate nosological classification and, therefore, definitive clinical diagnosis, prolonged clinical control of the patient is indispensable.

Constriction, Pathologic↗
PubMed1990

Significance of DNA content abnormalities in small rectal cancers.

Several studies have shown that the presence of DNA content abnormalities, measured by flow cytometry, may correlate with a poor prognosis in a variety of cancers. The predictive value of DNA content in patients with small rectal cancers has not been well determined. Thirty-nine patients with primary rectal adenocarcinoma smaller than 3 cm were studied in a comparison of DNA content with established prognostic variables. The following covariates were evaluated for their prognostic value: sex, age, tumor size, location, distal margin, Dukes' classification, tumor differentiation, and DNA content. DNA content was assessed by flow cytometric analysis, and each tumor was categorized as diploid or nondiploid. Of the parameters studied, Dukes' classification and tumor DNA content were found to be independent prognostic indicators. Determination of DNA content seems to provide additional useful prognostic information in patients with small rectal tumors.

Adenocarcinoma↗
PubMed1989

Atypical polypoid adenomyoma of the uterus. An immunohistochemical study of a case.

We studied one case of atypical polypoid adenomyoma of the uerus immunohistochemically using antisera against keratins, vinentin, S-100 protein, desmin and actin. The stromal cells were reactive with anti-actin and antidesmin antibodies suggesting a muscular phenotype and confirming previous ultrastructural data. Immunohistochemical investigations have proved to be useful in differential diagnosis of APA with invasive adenocarcinoma, adenosarcoma and adenofibroma of the endometrium.

Actins↗
PubMed1989

Neoplastic involvement of nipple-areolar complex in invasive breast cancer.

The neoplastic involvement of the nipple-areolar complex was histologically studied in 1,291 available consecutive mastectomy specimens with primary invasive breast carcinoma. Tumor involvement of the nipple-areolar complex was found in 150 specimens (12 percent) and was not suspected on gross examination in 99 patients (8 percent). A significant finding of our study was the relatively high rate of tumor foci in the nipple-areolar complex (7 percent) in those patients with early invasive stage I or II breast carcinoma eligible for conservative therapy. Analysis of nipple-areolar complex involvement with consideration of different clinico-morphologic variables indicates that it was directly associated with tumor size. No significant correlation was found with axillary metastases, tumor histologic type, or with the presence of noninvasive cancer in the vicinity of the dominant tumor. Our estimate of the significant change of finding tumor in the nipple-areolar complex, especially in the patient group eligible for conservative therapy, underlines the need for postoperative radiation.

Adult↗
PubMed1989

Clinical trials of a new polytetrafluoroethylene-silicone graft.

A self-sealing polytetrafluoroethelene (PTFE)-silicone graft designed to be used early after implantation was placed in 30 end-stage renal disease patients. Thirty-five conventional PTFE grafts were used in the control group. All patients were followed for 1 year. In the PTFE-silicone graft group, median time for first use was 1 day after implantation. Conventional PTFE grafts were first used 2 to 4 weeks after implantation. Early punctures of the PTFE-silicone grafts (first 10 sessions), although more difficult to perform than late punctures, were not more difficult than punctures of conventional PTFE grafts. Late punctures in PTFE-silicone grafts were easier than conventional PTFE graft punctures. Bleeding after needle removal was significantly decreased after early and late punctures of PTFE-silicone grafts compared with conventional PTFE grafts (p less than 0.001). The PTFE-silicone graft can be used immediately after implantation, sparing patients additional access procedures for short-term dialysis. This results in less morbidity, decreased bleeding complications, shorter hospital stay, and a significant reduction in expenses.

Blood Vessel Prosthesis↗