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Chemotherapeutic management of ovarian cancers is a difficult task as these neoplasms show significant differences in chemosensitivity, even if they share identical clinicopathological features. The present study was undertaken to investigate the prognostic and predictive role of p53 alterations in ovarian cancer. To this end, using different technical(More)
Bronchioloalveolar carcinoma (BAC) is a particular type of adenocarcinoma of the lung which accounts for up to 9 per cent of pulmonary malignancies. The aetiology and pathogenesis of this unique neoplastic disease are still unclear. Three histological subtypes of BAC have been recognized: mucinous, non-mucinous, and sclerosing. Of these, mucinous and(More)
The status of the P16 gene was investigated by Southern blot, polymerase chain reaction-single strand conformational polymorphism (PCR-SSCP), and DNA sequencing analyses in 30 primary resected non-small cell lung carcinomas (NSCLCs) with metastatic involvement of thoracic lymph nodes and 33 NSCLCs without node metastases. Direct sequencing of tumour DNA(More)
Lung cancer is strictly associated with tobacco smoking. Tumours developed in non-smoking subjects account for less than 10% of all lung cancers and show peculiar histopathological features, being prevalently adenocarcinomas. A number of genetic data suggest that their biological behaviour may be different from that of lung tumours caused by smoking,(More)
The branched M33 antimicrobial peptide was previously shown to be very active against Gram-negative bacterial pathogens, including multidrug-resistant strains. In an attempt to produce back-up molecules, we synthesized an M33 peptide isomer consisting of D-aminoacids (M33-D). This isomeric version showed 4 to 16-fold higher activity against Gram-positive(More)
The role of NK3 receptors in rabbit colonic propulsion has been investigated in vitro with the selective agonist, senktide, and two selective antagonists, SR142801 and SB222200. Peristalsis was elicited by distending a rubber balloon with 0.3 and 1.0 mL of water leading to a velocity of 2.2 and 2.8 mm s-1, respectively. At concentrations of 1 nM, senktide(More)
BACKGROUND Many genes (mdr1, mrp, DNA topoisomerases II) are known to be involved in the resistance to unrelated drugs (the MDR phenomenon), but the mechanisms of their activation have to be further investigated. MATERIALS AND METHODS Because several authors showed that p53 mutated gene was able to induce mdr1 overexpression, we evaluated in 51 non small(More)
Antimicrobial peptides, AMPs, exert their function acting mainly at the membrane level. In the wide AMPs panorama a particular position is occupied by lactoferrin derived peptides. They also possess antiviral, antifungal and antitumor activities and their parent molecules are available in several mammalian fluids and in dairy industries waste.
In this paper we show that human erythroleukaemia (K562) cells exhibited a significant inhibition of protein kinase C activity when cells were exposed to 40 micro M zidovudine in a time interval of 5-180 min., whereas prolonged treatment (24 hr) was uneffective. The addition of an excess of thymidine (125:1, mol:mol), in the cell suspension with or without(More)
Smooth muscle cells (SMC) from the circular muscle layer of rabbit colon, taken from the proximal and distal regions that are known to have different physiological and motor activities, were used to highlight distinct regional intrinsic myogenic properties and to investigate the correlations between receptor and signalling transduction pathways. Contractile(More)