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Biomedical subjects

G Gori

Publications and source records attributed to G Gori.

At least 55 records · Page 3Linked to original sources
PubMedDate not supplied

Effects of phlebotomy on urinary porphyrin pattern and liver histology in patients with porphyria cutanea tarda.

Urinary porphyrin profiles and liver histology have been investigated in a group of adult alcoholics with porphyria cutanea tarda (PCT) before and after one year phlebotomy. Both parameters were evaluated during the same period in a group of patients who did not undergo specific therapy for PCT. All patients were advised to abstain from alcohol. At the end of the one year observation period there was a significant fall of urinary total porphyrins and in the uro/coproporphyrin ratio in treated patients compared to basal values whereas no changes were found in controls. Liver biopsy findings revealed a significant reduction of hepatic fatty degeneration and siderosis with no changes in inflammatory infiltrates and fibrosis in treated patients, so the progression of liver disease was similar to controls. These results show that clinical and biochemical remission of PCT can occur independently of the evolution of the concomitant liver disease.

Alcoholism↗
PubMedDate not supplied

Assessment of depression in Alzheimer's disease: symptoms, syndrome, and computed tomography findings.

The Hamilton Rating Scale for Depression (HAM-D) and DSM-III-R criteria were simultaneously employed to assess the prevalence of depression in 26 outpatients with dementia of the Alzheimer type and 26 age-matched normal control subjects. Both assessment methods evidenced a higher frequency of depression during the severe stages of Alzheimer's disease. Among the Alzheimer patients, the prevalence rate of depression produced by the HAM-D (38%) was higher than the rate produced by DSM-III-R criteria (23%). Such a difference was due to the weight given by the HAM-D to the vegetative symptoms reported by the Alzheimer patients with more severe dementia. In a subgroup of 14 Alzheimer patients who underwent computed tomography, the volumetric measurement of CSF spaces did not reveal any difference between the depressed and nondepressed patients. On the basis of these results, the clinical problems related to the assessment of depression in Alzheimer's disease are discussed.

Aged↗
PubMedDate not supplied

Serum iron concentrations following administration of two different iron preparations.

Serum iron curves were determined in two groups of iron deficient patients after oral administration of iron protein succinylate or ferritin. The two preparations induced a significant increase of serum iron from 30 min after administration of a dose corresponding to 80 mg Fe3+. The increase induced by iron protein succinylate was more prolonged than that of ferritin.

Administration, Oral↗
PubMedDate not supplied

[Occupational exposure to anesthetic gases at several hospitals].

We considered data of samples collected in the period 1994-2001 in 83 operating rooms of 13 different public and private hospitals in Veneto Region. The anaestetic gases more used in operating rooms were nitrous oxide, isoflurane and, more recently, sevflurane. The mostly polluted positions were those in proximity of anaesthesiologic devices; the gases average concentrations were low in all hospitals examined, although some operating rooms demonstrated concentrations of anasthetic gases exceeding limit values. Lastly, the professional figures had different exposure to the various anaesthetic gases.

Air Pollution, Indoor↗
PubMedDate not supplied

[The occupational risks in a company producing aluminum alloy wheels].

An environmental hygiene study was carried out in a factory making aluminium alloy wheels via pressure moulding. Physical risk factors (noise and microclimate) and chemical risk factors (respirable dust, mineral oils, solvents, fluorides, formaldehyde, CO) were assessed. Analysis of the data showed that physical risk factors were prevalent, whereas chemical pollution was insignificant due to technical improvements made by the management in the course of several redesigns of the plants.

Air Pollutants, Occupational↗
PubMedDate not supplied

[Devices for the reduction of N2O pollution during conscious sedation in dentistry].

We considered data of environmental monitoring during three working days in a dentist's office who habitually employs nitrous oxide (N2O): conscious sedation is used to alleviate anxiety and to diminish or eliminate dental pain. Three different nose masks were tested to determine influence on environmental pollution by N2O. The study shows that the levels of N2O always remains low with the use of proper dental procedures, although the chose of the type of nose mask can further diminish air pollution and the exposure of dental personnel.

Air Pollution, Indoor↗
PubMedDate not supplied

[Tannin and gallic acid as marker of exposure to hardwood dust].

The total tannin concentration was determined, using two different SPF methods, in 35 dust powdered wood species, both hard and softwood. Using direct reading-method (280 nm) the concentration varied from 2485 mg/g for Swedish pine to 35,843 mg/g for European oak (quercus robur, hardwood). The data obtained with the second method (Folin-Chocalteau) were well correlated (y = 0.9885x + 4.3373; r = 0.84; n=35) with the data obtained with the first method. The measured concentrations are usually higher in hardwood than softwood tested. Finally, a simple HPLC-DAD method was tested for gallic acid (GA), recently proposed as a marker for oak dust.

Air Pollutants, Occupational↗
PubMedDate not supplied

[Validation of PM10 and PM2.5 personal samplers: comparison between PEM and CEN-ARPAV selectors].

In order to validate specific personal selectors for the collection of fine particles, 65 double measurements of PM10 and PM2.5 were carried out at the same collection site; thus allowing a comparison between two different methods of sampling. The first method was that normally used by ARPAV in order to sample the above-mentioned granulometric fractions in outdoor environment. The second method was chosen by us for personal sampling (PEM working at 2 l/min and at 4 l/min). In both cases the filters gravimetric analysis conformed to the expectations of D.M. 60 of 2/4/2002. The comparison between the two methods showed a good correlation in both the granulometric fractions: correlation coefficients r for the PM2.5 are equal to 0.96 and 0.99 for the PEM working at 2 l/min and at 4 l/min respectively; r for the PM10 are equal to 0.98 and 0.99 for the PEM working at 2 l/min and at 4 l/min respectively. The analysis of results in terms of fine particles concentration and difference between methods against their mean, shows a slight overestimate of the particles concentration with PEM working at 2 l/min, compared to those working at 4 l/min. Nevertheless, considering the good results obtained even with a flow of 2 l/min, we believe that using PEM working at 2 l/min to monitoring 24 hours-personal exposure assures an improved capacity in the battery-operated pumps.

Air Pollutants↗