[Synthesis of new benzimidazole and naphthimidazole derivatives and their biological activity].
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Antifungal Agents↗
Biomedical subjects
P Corti
Publications and source records attributed to P Corti.
Comparison of an HPTLC and an HPLC procedure for the determination of chlorpropham, propham and thiabendazole residues in potatoes.
HPTLC was used to check for residues of chlorpropham, propham (sprout inhibitors) and thiabendazole (fungicide) applied to potatoes. The method used gave good precision and analytical sensitivity. The sample preparation method developed by the authors was simple and gave good recovery and selectivity as far as other components of the matrix were concerned. Comparison with liquid chromatography confirmed the validity of the results.
Carbamates↗
Comparison of HPTLC and HPLC procedures for the determination of certain xenobiotic residues in apples and pears.
HPTLC was used to check for residues of benomyl, carbendazim, ethoxyquin and thiabendazole in apples and pears. The method used showed good precision with a percentage coefficient of variation of less than 5%; recoveries were always greater than 90%. The limits of determination using HPTLC were always at least four times lower than Italian statutory limits. Selectivity with respect to other matrix components was excellent for all fruit varieties tested. Comparison with HPLC confirmed the validity of the results.
Benomyl↗
Evaluation of release of antioxidant from high density polyethylene by planar chromatography.
Irganox 1330 (1,3,5-trimethyl-2,4,5-tris(3',5'-ditert-butyl)-4'-hydroxybenzyl)- benzene) (I), an alkylphenol compound used as antioxdiant in the production of high density polyethylene (HDPE), was the subject of this study. The quantity of I given up by polyethylene samples of different thickness to aqueous and lipophilic media simulating food was studied by planar chromatography (PC). The manner of antioxidant release was also investigated. The chromatographic method developed was found satisfactory for the quantification of I in the migration studies undertaken, and had quantification limits (12 ng/deposit) suitable for quality control of HDPE.
Antioxidants↗
Ureteral obstruction following allogeneic bone marrow transplantation in children.
Two patients with Ph + CML underwent URD-BMT after conditioning with Bu-Cy-LPAM. They developed hemorrhagic cystitis with an extremely complicated and painful course, caused by ureteral obstruction, requiring prolonged hospitalization. No virus other than cytomegalovirus was found and in both cases was attributed to Cy use. Treatment is usually conservative, but in the case of severe obstruction, a surgical approach should be considered and performed as early as possible to preserve renal function.
Adolescent↗
Dehalogenation and N-dealkylation of chlorpromazine as revealed by plasma concentrations of metabolites in a population of chronically medicated schizophrenics.
Dehalogenaton and N-demethylation of chlorpromazine (CPZ) were studied in twelve psychotic inpatients orally treated for four weeks with a daily CPZ dose of 6.4 +/- 1.1 (S.E.) mg/kg body weight (1.5-14.1, range). Weekly drug and metabolite plasma concentrations were measured by a gas liquid chromatography-nitrogen/phosphorus detector method (GLC/NPD). Plasma concentrations of the parent compound CPZ, of the dehalogenated metabolite promazine (PZ) and of the N-dealkylated metabolites N-monodemethylated chlorpromazine (CPZ-nor1) and N-didemethylated chlorpromazine (CPZ-nor2) had already reached a steady state by the end of the first week of treatment. During the entire treatment period the major plasma component was found to be PZ. Patients (N = 6) on a low dose regimen (3.7 +/- 0.2 mg/kg body weight) showed significantly lower mean plasma concentrations of CPZ and nor metabolites than patients (N = 6) on a higher dose regimen (8.6 +/- 0.7 mg/kg body weight). PZ mean plasma concentrations, however, were not significantly different in the two groups of patients, indicating that the yield of the CPZ dechlorination pathway, as opposed to that of the N-demethylation pathway, was already maximal at the CPZ concentrations attained under the low dose regimen. Male patients (N = 5) exhibited significantly higher mean PZ plasma concentrations over the 4 week period of the study than female patients (N = 7).
Adult↗
[Cholelithiasis in childhood: description of 2 cases].
Two cases of cholelithiasis in children are reported. The first patient was a 10-year-old girl with hyperinsulinism and hypoglycemia as associated medical conditions. The second one was a 3-year-old boy who had no definable cause for cholelithiasis. Both patients were symptomatic. Recurrent abdominal pain was the main symptom. A specific and accurate diagnosis was readily made by ultrasound in both children.
Age Factors↗
[Synpolydactyly: unusual features and variable expression in 5 generations of an Italian family].
The Authors report a family with synpolydactyly (or syndactyly type II) present in eleven out of thirty four members in five generations. Affected members do not show any other anomalies so that chromosomal or other genetic syndromes may be excluded. The possible mode of inheritance, the variability in expression, the penetrance in five generations are discussed. The peculiar bone deformities of hands and feet already reported by Cross et Al. are confirmed. The Authors presume that the present report is the first observation of synpolydactyly in an Italian family.
Adult↗
[Cutis marmorata telangiectasica congenita. Description of 2 further cases].
We report two cases of C.M.T.C., a rare cutaneous vascular anomaly, which is manifested at birth. It is a rare birth defect of unknown etiology; usually occurs sporadically. There is an association of C.M.T.C. with other congenital anomalies in at least 50% of the patients. On the basis of two cases, the clinical features of cutis marmorata telangiectasica congenita are described and the differential diagnosis discussed.
Diagnosis, Differential↗
[Infection by Mycoplasma pneumoniae. Epidemiologic investigation and statistical clinical study of 122 children admitted to the Institute of Pediatrics of the University of Florence during the period 1 January 1977 to 31 December 1983].
We carried out an epidemiologic research about M. Pneumoniae infection from 1977 to 1983: determination of CF antibodies has been performed by the Bacteriology and Virology Laboratory (Prof. Lamanna, USL 10/D, Florence). Serum samples were collected by the laboratory itself and by hospitals and university departments of Florence and neighbouring communes. Our research confirms cyclic behaviour of M. Pneumoniae infection: we could follow up a 3 years long epidemic after a previous 2 years long endemic disease. We found a major sera-positive rate for M. Pneumoniae in children than in adults. In the same period we carried out a clinical-statistical study on 122 children (80 males and 42 females) admitted to the Pediatric Institute "A. Meyer" in Florence because of an infection due to M. Pneumoniae. The most affected age range sems to be included between 5 and 10 years. Pneumonia is the commonest clinical feature of M. Pneumoniae infection (85.2%): furthermore, we must point out some cases in 0-2 years-old subjects. In our patients, clinical features, X-ray findings and laboratory tests strictly agree with those reported by other authors. We treated all our patients with erythromycin: in three weeks we obtained thee normalization of clinical patterns and X-ray findings in all cases.
Child↗
[Clinical report: Burkitt's tumor].
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Africa↗
The single-pass perfused rabbit ear as a model for studying percutaneous absorption of clonazepam. II. Influence of hydrogel-borne propylene glycol and skin pretreatment with lauryl alcohol.
Enhancers of the percutaneous diffusion of clonazepam in the isolated single-pass perfused rabbit ear were evaluated and included propylene glycol (PG), polyethylene glycols (PEGs) of different molecular weight, as well as skin pretreatment with lauryl alcohol (LA). PG caused a concentration-dependent increase in the diffusion of clonazepam, due partly to the increased solubility of the active principle in the hydrogel. PEGs of molecular weight up to 3,000 Daltons added to the PG hydrogel showed a simple additive effect on percutaneous diffusion enhancement induced by PG. Transdermal delivery of clonazepam also increased as a function of exposure time following pretreatment with LA.
Animals↗
Planar chromatographic and liquid chromatographic analysis of thiamphenicol in bovine and human plasma.
A planar chromatographic (PC) method was developed to determine thiamphenicol in human and bovine plasma with florphenicol as internal standard. The performance of the method was compared with that of a liquid chromatographic method. Recovery of extraction method developed for plasma was 81.51 +/- 2.85%. Reproducibilities of the PC assay performed with various PC plates were also good.
Animals↗