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Biomedical subjects

E Righi

Publications and source records attributed to E Righi.

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

Chloroform in alveolar air of individuals attending indoor swimming pools.

Alveolar air samples were collected from 163 subjects at indoor swimming pools and from 77 nonexposed subjects. Chloroform was present in all samples collected from exposed subjects (median = 695.02 nmol/m3). It was found at very low levels in 53% of samples from nonexposed subjects. Alveolar air chloroform levels from people attending indoor swimming pools (mean value within each sampling session) were correlated with environmental air concentration (r = 0.907, p = .002). Analysis of variance showed that levels of chloroform in alveolar air depend on environmental air concentration, age, intensity of the sport activity, and kind of swimming. Chloroform levels in samples collected from competitive swimmers versus nonswimming visitors were different (F = 10.911, p = .001). Moreover, their pattern of swimming may affect chloroform concentration in alveolar air. The analysis of chloroform in alveolar air assesses indoor exposure in healthy subjects simply and at low cost.

Adolescent↗
PubMedDate not supplied

Occupational and environmental exposure to perchloroethylene (PCE) in dry cleaners and their family members.

Perchloroethylene exposure in 28 dry-cleaning establishments and in 25 homes occupied by dry cleaners in Modena, Italy, was investigated. Environmental air samples and alveolar air samples from dry cleaners (n = 60) and from their family members (n = 23) were collected. The degree of perchloroethylene on the dry-cleaning premises varied widely from establishment to establishment. Spot sampling ranged from 0.6 to 75 mg/m3, whereas sampling by personal passive dosimeters ranged from 2.6 to 221.5 mg/m3 (8-h time weighted average values). Perchloroethylene in alveolar air samples collected at the end of the work day correlated closely with the 8-h time weighted average values (r = .750, p = .001), and correlated also with alveolar air samples collected at home in the evening (r = .665, p = .001) and the following morning (r = .549, p < .001). Perchloroethylene levels inside the homes of dry cleaners appeared significantly higher than in 29 houses selected as controls (Mann Whitney U test, p < .001). Perchloroethylene in alveolar air samples collected at home suggests that nonoccupational exposure to perchloroethylene for family members of dry cleaners exists.

Adolescent↗
PubMedDate not supplied

Two-year evolution of perchloroethylene-induced color-vision loss.

Progression of perchloroethylene-induced color-vision impairment was studied in 33 dry-cleaner workers at 12 establishments in Modena, Italy. In an initial survey, we evaluated exposure with personal passive samplers, and we assessed color vision with the Lanthony D-15 desaturated panel. Two years later, workers were reexamined. In 19 workers (subgroup A), exposure to perchloroethylene had increased (median of 1.7 ppm versus 4.3 ppm, respectively), whereas in the remaining 14 workers (subgroup B) exposure was reduced (2.9 ppm versus 0.7 ppm, respectively). Color vision worsened in subgroup A, but no vision changes were apparent in subgroup B. The results indicated that an increase in exposure during a 2-y period, even if slight, can cause color vision to deteriorate. A similar slight reduction in exposure did not lead to color-vision improvement; perhaps this lack of improvement resulted from (a) an insufficient reduction in exposure, (b) an insufficient reduction in duration of exposure, or (c) irreversible perchloroethylene-induced color-vision loss.

Adult↗
PubMedDate not supplied

[Mouth opening limitations due to soft tissue lesions].

Mouth opening limitations following on soft tissue lesions are subdivided according to aetiology into collagen disease connectival lesions, cutaneous and mucosa lesions consequent on the action of physical agents and, finally, cicatricial lesions of the cheeks and lips as a result of surgery for cancer or trauma. The commonest forms of plastic surgery used to correct such lesions are reviewed.

Burns↗
PubMedDate not supplied

[Microbiological characterization of solid wastes and aerosol in a municipal solid waste landfill site].

Authors report data about microbiological characterization of solid wastes and aerosol in the municipal solid waste landfill site in Poiatica (RE). In solid waste samples high values of total coliform and fecal coliform were observed (10(5)-10(6) CFU/g): total bacterial counts at 22 degrees, at 36 degrees and at 44 degrees ranged from 10(7) to 10(9) CFU/g. Aerosol samples collected during waste movement in the landfill site showed values of total and fecal bacterial ranging from 10(3)-10(4) CFU/m3. Staphylococci and fungi reported the same values while streptococci, total and fecal coliform and spore evidenced lower values. Municipal solid wastes and aerosol have to be considered as an infective substrate: it is necessary to adopt protective barriers in occupationally exposed subjects.

Aerosols↗
PubMedDate not supplied

[Exposure to water disinfection by-products and adverse pregnancy outcomes: results of a case-control study carried out in Modena (Italy)].

Chlorination By Products (CBPs) in drinking water have been associated with an increased risk of adverse pregnancy outcomes, such as small term birth (STB) and preterm delivery. Up to date epidemiological evidence is weakened by a generally inaccurate exposure assessment, often at an ecological level: in this study the exposure is evaluated at the individual level. A case control study with incident cases was performed in Modena between October 1999-September 2000. 332 subjects were enrolled: 93 preterm births (26th-37th week of pregnancy), 73 STB (from 38th week, and weight less than the lowest 10th percentile) and 166 controls. Exposure was assessed both by applying a questionnaire on personal habits and by personal water sampling directly at subjects' home. THMs were analysed in all samples, chlorite and chlorate in water samples treated with chlorine dioxide. Subjects usually drinking tap water were few (5.2%): most of them were living in areas supplied by water treated with chlorine dioxide (87%). Levels of THMs were low (mean: 0.73 microgram/l), while chlorite and chlorate concentrations were relatively high (mean: 217.8 microgram/l for chlorites and 95.2 microgram/l for chlorates). Preterm birth did not show any significant association with CBPs, while STB appeared significantly associated, after adjusting for many potential confounders, with CBPs induced by chlorine dioxide treatment, especially with levels of chlorate higher than 200 microgram/l (OR: 4.7; 95%CI: 1.15-19.72). The association between STB and chlorate must be investigated further as the number of water utilities applying chlorine dioxide as disinfection treatment is increasing.

Adult↗
PubMedDate not supplied

[Presence of disinfection by-products (DBPs) and other halogenated compounds in drinking water samples collected in the areas of Modena and Parma].

The Authors report data about the presence of Disinfection By-Products (DBPs) and other halogenated compounds in drinking water samples collected in the areas of Modena and Parma (20 water supplies). Trihalomethanes, chlorite and chlorate (only in water samples treated with chlorine dioxide), and halogenated compounds were investigated. On the whole, trihalomethanes were evidenced in the 85% of the samples (n. 285) at low levels, while chlorite and chlorate were present in the 67% and 63% of the treated samples with chlorine dioxide (257 samples). Chlorite mean and median values were 225.70 microg/l and 136.75 microg/l respectively, ranging from 20 to 2000 microg/l. Chlorate concentrations were lower than chlorite: the mean value was 102.93 mg/l, while median level was 50 microg/l (range: 20-1500 microg/l). The high concentrations of chlorite and the wide range of values within each municipality plant in Modena and Parma suggest to investigate further in order to evaluate the human exposure in drinking water thoroughly.

Chlorine Compounds↗
PubMedDate not supplied

[Epidemiology of work related injuries in young people: results of a survey carried out in Modena (Italy) between January and June 2000].

Work related injuries, above all those involving young people, are an important health and social issue, even though up to now small attention has been deserved in spite of the presence of about 68 workers per 1000 young people and the occurrence of 27400 injures in young people in 2000 in Italy. This study was aimed at improving the knowledge on work related injures occurring in Modena in 14-17 year old subjects in the period January-June 2000. A descriptive epidemiological study was carried out. Information was collected at the two emergency departments operating in Modena by checking hospital and INAIL records. Injures were defined as events caused by a violent external cause producing one or more lesions. Injuries were defined as work related when occurring during working activities or "in itinere". Work related injures and other injures were compared using the different statistical methods. Work related injuries occurring in young people during January-June 2000 in Modena were 76 (6-month incidence: 1.5 per 100 subjects of the same age) and represent 8.5% of all injuries. The most involved subjects were 17 year old males working in the industrial field, and in most cases prognoses were lasting less than 8 days. A Cluster Analysis identified two types of injures: the "in itinere" ones which resulted similar to the road accidents, both for body sites involved and for the way of occurrence and the injuries occurring at the working place characterised by a high frequency of lesions concerning hand, head, above all eyes. The study showed a remarkable incidence of work related injuries among 14-17 year old subjects in Modena in the first 6 months of 2000. Nevertheless many difficulties in finding information raised during the survey: a higher accuracy and completeness in collecting and recording of the data is needed to better define the epidemiological aspects of this issue.

Accidents, Occupational↗
PubMedDate not supplied

[Halogenated volatile organic compounds in bottled mineral water and soft drinks].

74 mineral natural water samples and 56 samples of different commercial drinks have been analysed by head-space chromatography in order to evidence the presence of volatile halogenated organic compounds (VHO). Trihalomethanes (THM) as drinking water chlorination by-products and trichloroethane, carbon tetrachloride, trichloroethylene and tetrachloroethylene as ubiquitarious substances have been investigated. The presence of VHO has been evidenced in 20,3% of mineral natural water samples and in the 58,9% of the commercial soft drinks: this latest group has usually shown higher levels of the investigated compounds. The results of the present study has been compared with a similar study performed in 1991 in the same area: the VHO values observed in the present study appear to be lower than those obtained in the previous study.

Beverages↗
PubMedDate not supplied

[Giant-cell neoplasms].

Explore the source record for details and available documents.

Diagnosis, Differential↗