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1.
J Investig Allergol Clin Immunol ; 32(2): 124-132, 2022 Apr 19.
Article de Anglais | MEDLINE | ID: mdl-32856595

RÉSUMÉ

BACKGROUND: Dupilumab has proven to be an effective treatment for patients with moderate-to-severe atopic dermatitis (AD) in clinical trials. However, real-world experience with dupilumab in a broader population is limited. METHODS: The study population comprised adult patients with moderate-to-severe AD, defined as an Eczema Area Severity Index (EASI) score of 24 or higher, treated with dupilumab at 10 Italian teaching hospitals. We analyzed physician-reported outcome measures (EASI), patient-reported outcome measures (pruritus and sleep score, Dermatology Life Quality Index [DLQI]), and serological markers (IgE and eosinophil count) after 16 weeks. RESULTS: We enrolled 543 patients with moderate-to-severe AD. Two patients (0.4%) discontinued treatment. The median (IQR) change from baseline to 16 weeks of treatment in the EASI score was -87.5 (22.0) (P<.001). The EASI-50, EASI-75, and EASI-90 response rates were 98.1%, 81.5%, and 50.8% after 16 weeks. At 16 weeks, 93.0% of the patients had achieved a 4-point or higher improvement in DLQI from baseline. During treatment with dupilumab, 12.2% of the patients developed conjunctivitis, and total IgE decreased significantly (P<.001). Interestingly, in the multivariate logistic regression model, the risk of developing dupilumab-related conjunctivitis was associated with early onset of AD (OR, 2.25; 95%CI, 1.07-4.70; P=.03) and presence of eosinophilia (OR, 1.91; 95%CI, 1.05-3.39; P=.03). CONCLUSION: This is the broadest real-life study in AD patients treated with dupilumab to date. We observed more significant improvements induced by dupilumab in adult patients with moderate-to-severe AD than those reported in clinical trials.


Sujet(s)
Conjonctivite , Eczéma atopique , Adulte , Anticorps monoclonaux humanisés , Eczéma atopique/traitement médicamenteux , Humains , Immunoglobuline E , Études rétrospectives , Indice de gravité de la maladie , Résultat thérapeutique
2.
J Pers Med ; 11(3)2021 Mar 17.
Article de Anglais | MEDLINE | ID: mdl-33802940

RÉSUMÉ

Unhealthy lifestyle, as sedentary, unbalanced diet, smoking, and body composition change are often observed in non-Hodgkin's lymphoma (NHL) survivors, and could be determinant for the onset of cancer treatment-induced metabolic syndrome (CTIMetS), including abdominal obesity, sarcopenia, and insulin resistance. The aim of this study was to assess whether changes in body composition, unhealthy lifestyles and types of anti-cancer treatment could increase the risk of metabolic syndrome (MetSyn) and sarcopenia in long-term NHL survivors. We enrolled 60 consecutive NHL patients in continuous remission for at least 3 years. Nutritional status was assessed by anthropometry-plicometry, and a questionnaire concerning lifestyles and eating habits was administered. More than 60% of survivors exhibited weight gain and a change in body composition, with an increased risk of MetSyn. Univariate analysis showed a significantly higher risk of metabolic disorder in patients treated with steroids, and in patients with unhealthy lifestyles. These data suggest that a nutritional intervention, associated with adequate physical activity and a healthier lifestyle, should be indicated early during the follow-up of lymphoma patients, in order to decrease the risk of MetSyn's onset and correlated diseases in the long term.

7.
Br J Anaesth ; 122(2): 269-276, 2019 Feb.
Article de Anglais | MEDLINE | ID: mdl-30686313

RÉSUMÉ

BACKGROUND: Recruitment manoeuvres generate a transient increase in trans-pulmonary pressure that could open collapsed alveoli. Recruitment manoeuvres might generate very high inspiratory airflows. We evaluated whether recruitment manoeuvres could displace respiratory secretions towards the distal airways and impair gas exchange in a porcine model of bacterial pneumonia. METHODS: We conducted a prospective randomised study in 10 mechanically ventilated pigs. Pneumonia was produced by direct intra-bronchial introduction of Pseudomonas aeruginosa. Four recruitment manoeuvres were applied randomly: extended sigh (ES), maximal recruitment strategy (MRS), sudden increase in driving pressure and PEEP (SI-PEEP), and sustained inflation (SI). Mucus transport was assessed by fluoroscopic tracking of radiopaque disks before and during each recruitment manoeuvre. The effects of each RM on gas exchange were assessed 15 min after the intervention. RESULTS: Before recruitment manoeuvres, mucus always cleared towards the glottis. Conversely, mucus was displaced towards the distal airways in 28.6% ES applications and 50% of all other recruitment manoeuvres (P=0.053). Median mucus velocity was 1.26 mm min-1 [0.48-3.89] before each recruitment manoeuvre, but was reversed (P=0.007) during ES [0.10 mm min-1 [-0.04-1.00]], MRS [0.10 mm min-1 [-0.4-0.48]], SI-PEEP [0.02 mm min-1 [-0.14-0.34]], and SI [0.10 mm min-1 [-0.63-0.75]]. When PaO2 failed to improve after recruitment manoeuvre, mucus was displaced towards the distal airways in 68.7% of the cases, compared with 31.2% recruitment manoeuvres associated with improved PaO2 (odds ratio: 4.76 (95% confidence interval: 1.13-19.97). CONCLUSIONS: Recruitment manoeuvres dislodge mucus distally, irrespective of airflow generated by different recruitment manoeuvres. Further investigation in humans is warranted to corroborate these pre clinical findings, as there may be limited benefits associated with lung recruitment in pneumonia.


Sujet(s)
Prise en charge des voies aériennes/méthodes , Intubation trachéale/méthodes , Mucus , Pneumopathie bactérienne/complications , Animaux , Modèles animaux de maladie humaine , Femelle , Débit expiratoire de pointe , Études prospectives , Pseudomonas aeruginosa , Échanges gazeux pulmonaires , Ventilation artificielle , Mécanique respiratoire , Sus scrofa , Suidae
8.
Br J Anaesth ; 121(3): 588-594, 2018 Sep.
Article de Anglais | MEDLINE | ID: mdl-30115257

RÉSUMÉ

BACKGROUND: Near-infrared spectroscopy, a non-invasive technique for monitoring cerebral oxygenation, is widely used, but its accuracy is questioned because of the possibility of extra-cranial contamination. Ultrasound-tagged near-infrared spectroscopy (UT-NIRS) has been proposed as an improvement over previous methods. We investigated UT-NIRS in healthy volunteers and in brain-dead patients. METHODS: We studied 20 healthy volunteers and 20 brain-dead patients with two UT-NIRS devices, CerOx™ and c-FLOW™ (Ornim Medical, Kfar Saba, Israel), which measure cerebral flow index (CFI), a parameter related to changes in cerebral blood flow (CBF). Monitoring started after the patients had been declared brain dead for a median of 34 (range: 11-300) min. In 11 cases, we obtained further demonstration of absent CBF. RESULTS: In healthy volunteers, CFI was markedly different in the two hemispheres in the same subject, with wide variability amongst subjects. In brain-dead patients (median age: 64 yr old, 45% female; 20% traumatic brain injury, 40% subarachnoid haemorrhage, and 40% intracranial haemorrhage), the median (inter-quartile range) CFI was 41 (36-47), significantly higher than in volunteers (33; 27-36). CONCLUSIONS: In brain-dead patients, where CBF is absent, the UT-NIRS findings can indicate an apparently perfused brain. This might reflect an insufficient separation of signals from extra-cranial structures from a genuine appraisal of cerebral perfusion. For non-invasive assessment of CBF-related parameters, the near-infrared spectroscopy still needs substantial improvement.


Sujet(s)
Mort cérébrale/imagerie diagnostique , Circulation cérébrovasculaire/physiologie , Monitorage physiologique/méthodes , Spectroscopie proche infrarouge/méthodes , Échographie/méthodes , Adulte , Sujet âgé , Sujet âgé de 80 ans ou plus , Mort cérébrale/physiopathologie , Femelle , Volontaires sains , Humains , Mâle , Adulte d'âge moyen , Valeurs de référence , Tomodensitométrie
10.
G Ital Dermatol Venereol ; 146(3): 191-5, 2011 Jun.
Article de Anglais | MEDLINE | ID: mdl-21566549

RÉSUMÉ

AIM: The aim of thos paper was to determine the effect of oral supplementation (OS) with a nutraceutical, containing methionine, Echinacea, zinc, probiotics and other antioxidant and immunostimulating compounds, on the response of cutaneous warts to conventional standard therapy (CST). METHODS: This was an open-label study in adults and adolescents aged 14 years or more and with a body weight ≥40 kg, who had at least one cutaneous viral wart. Eligible patients were consecutively allocated to CST (topical therapy with a preparation containing salicylic acid and lactic acid or liquid nitrogen cryotherapy) alone or CST combined with nutraceutical OS for 4 months. RESULTS: A total of 172 patients were enrolled: 83 received CST alone and 89 CST+OS. During the 6-month observation period, a statistically significant reduction of the mean number of warts was obtained in each treatment group and subgroup. The addition of nutraceutical OS was associated with a significantly lower number of warts at 6 months as compared to CST alone. Complete remission was obtained in 54.5% and 86% of patients in the CST group and CST+OS arm, respectively (P<0.001). The influence of the nutraceutical on the response rate appeared to be more prominent in the subgroup of patients treated with topical therapy. The development of new warts during the study period occurred significantly less frequently with CST+OS compared to CST (9% versus 25%; P=0.004). No adverse events possibly related to the nutraceutical administration were observed. CONCLUSION: Our pilot experience seems to suggest that nutraceutical OS is safe and beneficial in patients with cutaneous warts, and capable of enhancing the response to CST.


Sujet(s)
Adjuvants immunologiques/usage thérapeutique , Antioxydants/usage thérapeutique , Compléments alimentaires , Echinacea , Méthionine/usage thérapeutique , Phytothérapie , Verrues/traitement médicamenteux , Administration par voie cutanée , Administration par voie orale , Adolescent , Adulte , Sujet âgé , Cryothérapie/méthodes , Femelle , Études de suivi , Humains , Mâle , Adulte d'âge moyen , Phytothérapie/méthodes , Projets pilotes , Extraits de plantes/usage thérapeutique , Acide salicylique/usage thérapeutique , Résultat thérapeutique , Jeune adulte , Zinc/usage thérapeutique
11.
Int J Immunopathol Pharmacol ; 24(1): 195-200, 2011.
Article de Anglais | MEDLINE | ID: mdl-21496403

RÉSUMÉ

Common drugs in the therapy of chronic idiopathic urticaria (CIU) include antihistamines alone or combined with corticosteroids, but severe unresponsive patients require alternative treatments. This retrospective study aims to evaluate clinical response and safety of low-dose and long-term oral Cyclosporin-A (CyA) in unresponsive patients. One hundred and ten CIU patients, unresponsive to a previous treatment (antihistamines plus prednisone 0.2 mg/kg/day), received additional oral CyA 1–3 mg/kg/day for 6 months. The patients were subdivided into three groups (A, B, C) according to the different CyA doses. Parameters of clinical efficacy including pruritus, and size and number of wheals were evaluated at baseline, after three and six months. All adverse events were recorded. The mean total symptom severity score decreased by 63% in Group A, 76% in Group B, and 85% in Group C after 6 months. Total disappearance of the symptoms was recorded in 43 patients (39.1%): 7 (28%) of Group A; 12 (37.5%) of Group B and 24 (45%) of Group C. After a mean of 2 months from CyA suspension, 14 patients (11%) had recurrence of symptoms. Minor side effects were noted in 8 patients (7%). Our study indicates that low-dose, long-term CyA therapy is efficacious and safe in severe unresponsive CIU.


Sujet(s)
Ciclosporine/usage thérapeutique , Urticaire/traitement médicamenteux , Adulte , Sujet âgé , Maladie chronique , Ciclosporine/effets indésirables , Femelle , Humains , Mâle , Adulte d'âge moyen , Études rétrospectives
12.
J Biol Regul Homeost Agents ; 23(2): 79-84, 2009.
Article de Anglais | MEDLINE | ID: mdl-19589288

RÉSUMÉ

A wide variety of nasal irrigation systems are currently available for improving nasal symptoms, but few studies have compared their effectiveness with respect to patient age and type of nasal disease. This pilot study aims to compare the efficacy of two irrigation systems in 20 patients (12 males and 8 females; age range, 19-54 years; mean age, 36) with acute rhinosinusitis and treated only with antibiotic (levofloxacin 500 mg/day for 10 days) and topical nasal decongestant (naphazoline 2 puffs in each nostril twice daily for 7 days). Patients were randomly assigned to the treatments, using either a nasal syringe (10 mL saline solution, 3 times daily for 14 days) (Group 1) or the recently available Lavonase system (250 mL saline solution sac, twice daily for 14 days) (Group 2). Work-up included history, evaluation of signs and symptoms (nasal obstruction, rhinorrhea), nasal endoscopy, and anterior rhinomanometry. Nasal irrigation with the Lavonase system was found to be more effective in reducing symptoms, as all significantly diminished (p<0.05). In addition, the Lavonase system significantly decreased nasal resistances (p<0.05). This preliminary study shows that the ancillary treatment of acute rhinosinusitis with Lavonase may be useful.


Sujet(s)
Lavage nasal/méthodes , Rhinite/thérapie , Sinusite/thérapie , Maladie aigüe , Adulte , Antibactériens/usage thérapeutique , Association thérapeutique , Femelle , Humains , Lévofloxacine , Mâle , Adulte d'âge moyen , Naphazoline/usage thérapeutique , Décongestionnant nasal/usage thérapeutique , Obstruction nasale/traitement médicamenteux , Ofloxacine/usage thérapeutique , Projets pilotes , Rhinite/traitement médicamenteux , Rhinomanométrie , Sinusite/traitement médicamenteux , Jeune adulte
13.
Neurology ; 72(19): 1640-5, 2009 May 12.
Article de Anglais | MEDLINE | ID: mdl-19433736

RÉSUMÉ

OBJECTIVE: To describe ALS mortality rates in the well-characterized ethnically mixed Cuban population over a 6-year period. BACKGROUND: There have been few population-based epidemiologic studies of ALS in non-Europeans. Preliminary data from the United States suggest a lower frequency of ALS in Hispanic and African groups compared with those of European descent. The Cuban population of 11 million comprises three main ancestral groups classified by skin color as white (65%), mixed (24%), and (black 10%). Medical care is of a high standard and is free. Cuba is ideally placed to establish the frequency of ALS in an admixed population of diverse ethnic origin. METHODS: Multiple-cause mortality files from the Central Statistics office in Cuba for the years 2001 through to 2006 were searched for codes corresponding to ALS. Age-adjusted mortality rates were calculated by sex, race/ethnicity, age, and geographic region at time of death. RESULTS: Four hundred thirty-two patients with a diagnosis of ALS were identified. The mean age at death was 63.7 years. There was a slight male predominance (1.1:1). The adjusted death rate from ALS for the total population older than 15 years was 0.83 per 100,000. The adjusted mortality rate per 100,000 was considerably lower in the mixed population (0.55; confidence interval [CI] 0.4-0.72) than in whites (0.93; CI 0.83-1.03) and blacks (0.87; CI 0.62-1.17). There was no correlation between the number of neurologists in each region and the mortality rate from ALS (r = 0.268, p = 0.335). CONCLUSIONS: The overall mortality rate from ALS in Cuba is similar to that described in Hispanic populations in the United States and is lower than in Northern European populations. Mortality from ALS is lowest in a population of mixed ancestry. Ancestral origin is likely to play a role in ALS susceptibility.


Sujet(s)
Sclérose latérale amyotrophique/ethnologie , Sclérose latérale amyotrophique/génétique , Sclérose latérale amyotrophique/mortalité , Prédisposition génétique à une maladie/génétique , /génétique , Âge de début , Études de cohortes , Intervalles de confiance , Cuba/épidémiologie , Cuba/ethnologie , Femelle , Hispanique ou Latino/ethnologie , Hispanique ou Latino/génétique , Hispanique ou Latino/statistiques et données numériques , Humains , Incidence , Mâle , Adulte d'âge moyen , Mortalité/ethnologie , /statistiques et données numériques , Enregistrements , /ethnologie , /génétique , /statistiques et données numériques
14.
Allergy ; 64(4): 556-9, 2009 Apr.
Article de Anglais | MEDLINE | ID: mdl-19175593

RÉSUMÉ

BACKGROUND: The aim of this study was to identify the prevalence of allergic disease in young soccer players compared to age-matched students and to evaluate if this prevalence changes as the intensity of training increases. METHODS: A modified ECRHS questionnaire was administered to 194 soccer players divided by age as Beginners (8-11 years), Juniors (12-16 years) and Under 21 (17-20 years) to evaluate the prevalence of allergic diseases and symptoms as well as drug consumption. Subjects with a positive personal history of allergic diseases underwent skin prick and/or patch tests. Age-matched students (n = 136) were used as a control group. RESULTS: The prevalence of allergic diseases was 34.5% in soccer players and 31.6% in control subjects (n.s.). Skin sensitization to inhalant allergens was detected in 14.4% of symptomatic soccer players and in 19.2% of control students (n.s.). Patch tests were positive in 35.7% of soccer players and 23.0% of controls with allergic dermatitis (n.s.). The prevalence of allergic diseases did not significantly change in relation to the intensity of training. Although the relative prevalence of sensitization to perennial allergens and asthma was less frequent in soccer players than in controls, and the occurrence of exercise-induced bronchoconstriction was similar in the two groups, soccer players used twice as many anti-allergic and anti-asthmatic drugs as control students. CONCLUSIONS: An increasingly intensive training programme is not associated with greater risk of allergic disease in soccer players. Therapy regimens of allergic athletes and exercisers should be monitored more closely to guarantee adequate treatment yet avoid inappropriate drug use and doping practices.


Sujet(s)
Asthme/épidémiologie , Hypersensibilité/épidémiologie , Aptitude physique/physiologie , Football/physiologie , Adolescent , Adulte , Antiallergiques/usage thérapeutique , Antiasthmatiques/usage thérapeutique , Asthme/traitement médicamenteux , Asthme à l'effort/traitement médicamenteux , Asthme à l'effort/épidémiologie , Enfant , Humains , Hypersensibilité/traitement médicamenteux , Prévalence , Tests cutanés , Enquêtes et questionnaires
15.
Immunopharmacol Immunotoxicol ; 30(1): 153-61, 2008.
Article de Anglais | MEDLINE | ID: mdl-18306111

RÉSUMÉ

The efficacy of specific immunotherapy in allergic patients with IgE-mediated rhino-conjunctivitis, asthma and allergic reaction for stinging insects suggests the opportunity of improving technical procedures to minimize risk and optimise the safety of immunotherapy. This study investigated both local and systemic reactions, occurring in a population of 218 patients undergoing immunotherapy, in an attempt to correlate them with some parameters as well as age, sex and allergenic extracts. The epidemiological evaluation was based on the administration of a questionnaire to 218 patients in order to assess possible reactions to immunotherapy. The following data were evaluated: personal data, diagnosis, specific allergens, adverse reactions undergone during treatment, number of reactions and symptoms. The patients were followed-up by the medical staff of the Section of Allergological and Immunological Disease (SAID), University of Bari (Bari-Italy) for compilation of questionnaires. We found a correlation between female sex and adverse reactions. Among 107 patients referring reactions to the immunotherapy, 71 patients (66.3%) presented only local reactions; 11 patients (10.3%) systemic reactions and 25 patients (23.4%) systemic reactions associated with local reactions. Parietaria was mostly involved in patients with local reactions, instead, in patients with systemic reactions the prevalent allergens seem to be Dermatophagoides and grass-pollen. Rhinitis was the most frequent diagnosis for patients who have presented both local and systemic reactions. In our study, we had frequently mild systemic reactions and some cases of respiratory difficulties, while it is evident that in our group of patients no cases of anaphylaxis occurred. In addition, we considered some events before the administration of immunotherapy, such as assumption of drugs, meals, exposure to sun, stress or physical activity and the percentage of adverse reactions. On the light of a small number of fatality, immunotherapy represents a safer therapy for allergic diseases; nevertheless, our data suggest that safety is strictly correlated with prescriptions by specialists, administration by trained physicians and accurate follow-up of patients. In particular it is recommended to avoid some events before the administration of immunotherapy, above all the assumption of drugs and physical exercise.


Sujet(s)
Désensibilisation immunologique/effets indésirables , Hypersensibilité immédiate/épidémiologie , Hypersensibilité immédiate/immunologie , Hypersensibilité/thérapie , Adolescent , Adulte , Sujet âgé , Antigènes/analyse , Antigènes/immunologie , Enfant , Femelle , Humains , Italie/épidémiologie , Mâle , Adulte d'âge moyen , Facteurs de risque
16.
Forensic Sci Med Pathol ; 3(4): 275-82, 2007 Dec.
Article de Anglais | MEDLINE | ID: mdl-25869268

RÉSUMÉ

The relationship between the craniometric indices that can be evinced from the comparison of two faces for identification purposes is considered a reliable method for the personal identification of faces. Our study aims to assess whether facial indices are susceptible to substantial variations even if the two faces being compared are a different size, looking in a different direction, or differently angled. Our results showed high variability as regards both the facial indices thus obtained and the relative relations. This underlines the fact that regardless of the validity of the metric analysis method used, no numerical comparison can be reliable unless prior parametrical somato-physical superimposition of the images of the subjects has been performed to assess the complete comparability of the faces of the suspects. In conclusion, no reliable identification can be made with the simplified techniques that bypass this difficult, demanding and time-consuming phase of parametric superimposition, as we have shown that they can lead to gross errors.


Sujet(s)
Identification biométrique , Céphalométrie/méthodes , Face/anatomie et histologie , Anthropologie médicolégale/méthodes , Traitement d'image par ordinateur , Photogrammétrie/méthodes , Adulte , Criminels , Expression faciale , Mouvements de la tête , Humains , Mâle , Adulte d'âge moyen , Posture , Reproductibilité des résultats , Enregistrement sur magnétoscope
17.
Int J Obes Relat Metab Disord ; 27(12): 1453-8, 2003 Dec.
Article de Anglais | MEDLINE | ID: mdl-14634674

RÉSUMÉ

OBJECTIVE: Several obese subjects show a wide array of respiratory disturbances during sleep due to an increased upper-airway resistance. The aim of the present study was to evaluate diurnal PaCO(2) tension in nonsmoking obese women and the possible relationship of this parameter with the presence of sleep disordered breathing (SDB). DESIGN: Cross-sectional study of PaCO(2) tension in obese women. PATIENTS AND METHODS: A total of 91 nonsmoking obese women (BMI > or =30 kg/m(2), aged 42.8+/-15.7 y) were recruited and evaluated for general and anthropometric parameters, respiratory function, sleep-related symptoms, and sleep disorders of breathing. RESULTS: A total of 10 subjects (10.9%) had diurnal hypercapnia (PaCO(2)> or =43 mmHg). Age, BMI, neck circumference, apnoea/hypopnoea index, and nocturnal desaturation (expressed as TST(SaO(2<90%)); TST(SaO(2<90%))=percentage of total sleep time with oxyhaemoglobin saturation <90%) were significantly higher in obese patients with diurnal hypercapnia, compared to normocapnic women. Moreover, hypercapnic patients had reduced forced expiratory volume in 1 s compared to normocapnic individuals. By using multiple regression analysis, the best fitting model (r=0.62, P<0.001) for predicting diurnal PaCO(2) tension in the study population showed that 24.23% of the variance may be explained by TST(SaO(2<90%)), according to the equation: PaCO(2)=0.09 age+0.07 TST(SaO(2<90%))+33.00. CONCLUSIONS: This study suggests that severity of SDB is the most important factor in determining diurnal PaCO(2) tension in apparently healthy nonsmoking obese women.


Sujet(s)
Dioxyde de carbone/sang , Obésité/complications , Syndromes d'apnées du sommeil/étiologie , Adulte , Sujet âgé , Anthropométrie , Rythme circadien , Études transversales , Femelle , Volume expiratoire maximal par seconde , Humains , Hypercapnie/étiologie , Adulte d'âge moyen , Obésité/sang , Obésité/physiopathologie , Pression partielle , Analyse de régression , Syndromes d'apnées du sommeil/sang , Syndromes d'apnées du sommeil/physiopathologie
18.
Med Lav ; 93(6): 527-39, 2002.
Article de Italien | MEDLINE | ID: mdl-12596423

RÉSUMÉ

BACKGROUND: Radon-222 is a gaseous radioactive chemical which can be transformed into other radioactive chemicals, defined as "products of decay" or "radon's daughter". The modality of radon penetration into the buildings depends on the convection motion created in the ground, which suck it back, so causing the penetration. The principal effect on human health is the increase risk of lung cancer, in proportion to the concentration and the time people spend indoors with exposure to radon. OBJECTIVES: The study proposed to estimate the expected cases of radon-induced lung cancer in the population of Apulia due to contamination by indoor radon. METHODS: The study used the data obtained in a national survey made by ANPA (National Environmental Protection Agency) and ISS (High Health Institute), with the collaboration of the Regional Reference Centres for the Control of Environmental Radioactivity (CRR). In the Apulia Region 310 families (5000 nationwide) were involved, which were selected so as to constitute a representative sample both of the region and the country. Appropriate instruments for the measurement of mean concentrations of indoor radon (passive nuclear trace monitors were installed in the homes of the sample families in two different periods of year). We evaluated the variations of indoor radon concentration in the houses during spring-summer and autumn-winter periods, observing a predictable increase in the latter period. We assessed concentrations in relation to: 1. architectural features and location, 2. construction year, 3. building material, 4. presence of windows. RESULTS: We found higher contamination in the oldest non-cement buildings and on the lower floors. In Lecce and Castrì di Lecce we found a mean radon concentration higher than the national and the regional mean, which is equivalent to annual exposure of 0.54 and 0.46 WLM respectively. For these levels we estimated that the expected cases of radon-induced lung cancer will be 1.5 in Lecce and 1.3 in Castrì per 10,000 inhabitants. CONCLUSION: The results of our investigations confirm that indoor radon pollution is a significant problem as it is one of the main causes of lung cancer. Hence, precautionary measures to reduce as much as possible exposure to indoor radon are highly recommended.


Sujet(s)
Polluants atmosphériques radioactifs/effets indésirables , Pollution de l'air intérieur/effets indésirables , Tumeurs du poumon/épidémiologie , Tumeurs du poumon/étiologie , Tumeurs radio-induites/épidémiologie , Tumeurs radio-induites/étiologie , Radon/effets indésirables , Polluants atmosphériques radioactifs/analyse , Pollution de l'air intérieur/analyse , Humains , Italie/épidémiologie , Radon/analyse
19.
Clin Hemorheol Microcirc ; 24(1): 25-31, 2001.
Article de Anglais | MEDLINE | ID: mdl-11345231

RÉSUMÉ

Hypertension can be considered as a progressive ischaemic syndrome interesting micro- and macrovasculature. In hypertensives it is possible to observe a link between an increase in peripheral resistance and blood viscosity, and a decrease in red blood cell (RBC) deformability. It is important to underline the link between the increase of blood viscosity, the decrease of RBC deformability and the cytosolic calcium level, which is related to the ischaemic syndrome in hypertension. The aim of this study was to evaluate the level of Ca++ and its possible correlation with hemorheological patterns during arterial hypertension. Two groups were studied: Group 1 consisted of 18 mild hypertensives (11 males and 7 pre-menopausal females, aged 39 +/- 3 years). This group was of medium risk according to WHO and ISH (1999) with no other pathologies apart from peripheral occlusive arterial disease II stage type A. Group 2 was made up of 14 healthy subjects (9 males and 5 females, aged 34 +/- 4 years). The intraerythrocytic cytosolic calcium was evaluated using a fluorescent marker FURA 2/AM (Calbiochem). The following hemorheological parameters were also assessed using the new Laser assisted Optical Rotational Red Cell Analyzer (LORCA) according to the Hardeman method (1994): RBC deformability-Elongation Index (EI), RBC aggregability- aggregation half time (t 1/2). The data obtained showed that compared to the control group the hypertensives had a significantly higher level of intraerythrocytic cytosolic calcium (p < 0.01), plus a significant decrease in EI and t 1/2 evaluated using LORCA. We also observed a significant correlation (p < 0.01) between an increase in Ca++ and a decrease in EI in the hypertensive patients. Moreover our study revealed a significant correlation between the increase in intraerythrocytic Ca++ and the t 1/2 decrease. The evaluation of the hemorheological patterns and cytosolic calcium could explain the impairment in peripheral perfusion and oxygenation in hypertensive patients and could provide a good model for a better evaluation and treatment of microvasculature perfusion in subjects with essential and complicated hypertension.


Sujet(s)
Érythrocytes/physiologie , Hypertension artérielle/physiopathologie , Adulte , Calcium/sang , Déformabilité érythrocytaire , Femelle , Humains , Hypertension artérielle/métabolisme , Hypertension artérielle/anatomopathologie , Mâle
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