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Featured researches published by Alessandra Mereu.


PLOS ONE | 2012

Population based study of 12 autoimmune diseases in Sardinia, Italy: prevalence and comorbidity.

Claudia Sardu; Eleonora Cocco; Alessandra Mereu; Roberta Massa; Alessandro Cuccu; Maria Giovanna Marrosu; Paolo Contu

Background The limited availability of prevalence data based on a representative sample of the general population, and the limited number of diseases considered in studies about co-morbidity are the critical factors in study of autoimmune diseases. This paper describes the prevalence of 12 autoimmune diseases in a representative sample of the general population in the South of Sardinia, Italy, and tests the hypothesis of an overall association among these diseases. Methods Data were obtained from 21 GPs. The sample included 25,885 people. Prevalence data were expressed with 95% Poisson C.I. The hypothesis of an overall association between autoimmune diseases was tested by evaluating the co-occurrence within individuals. Results Prevalence per 100,000 are: 552 rheumatoid arthritis, 124 ulcerative colitis, 15 Crohns disease, 464 type 1 diabetes, 81 systemic lupus erythematosus, 124 celiac disease, 35 myasthenia gravis, 939 psoriasis/psoriatic arthritis, 35 systemic sclerosis, 224 multiple sclerosis, 31 Sjogrens syndrome, and 2,619 autoimmune thyroiditis . An overall association between autoimmune disorders was highlighted. Conclusions The comparisons with prevalence reported in current literature do not show outlier values, except possibly for a few diseases like celiac disease and myasthenia gravis. People already affected by a first autoimmune disease have a higher probability of being affected by a second autoimmune disorder. In the present study, the sample size, together with the low overall prevalence of autoimmune diseases in the population, did not allow us to examine which diseases are most frequently associated with other autoimmune diseases. However, this paper makes available an adequate control population for future clinical studies aimed at exploring the co-morbidity of specific pairs of autoimmune diseases.


Movement Disorders | 2013

Neuropathy and levodopa in Parkinson's disease: Evidence from a multicenter study

Roberto Ceravolo; Giovanni Cossu; Monica Bandettini di Poggio; Lucio Santoro; Paolo Barone; Maurizio Zibetti; Daniela Frosini; Valentina Nicoletti; Fiore Manganelli; Rosa Iodice; Marina Picillo; Aristide Merola; Leonardo Lopiano; Alessandra Paribello; Davide Manca; Maurizio Melis; Roberta Marchese; Paolo Borelli; Alessandra Mereu; Paolo Contu; Giovanni Abbruzzese; Ubaldo Bonuccelli

The objectives of this study were to evaluate the risk of neuropathy in patients with Parkinsons disease (PD) and to evaluate the role of levodopa exposure as a potential risk factor. A multicenter study of 330 patients with PD and 137 healthy controls with a comparable age distribution was performed. With respect to levodopa exposure, 144 patients had long exposure (≥3 years) to levodopa (LELD), 103 patients had short exposure (<3 years) to levodopa (SELD), and 83 patients had no exposure to levodopa (NOLD). Nerve function was evaluated using the reduced total neuropathy score. Right sural sensory antidromic and peroneal motor nerve conduction studies were performed by neurophysiologists who were blinded to the existence of neuropathy clinical features or PD treatment. Overall, 19.40% of patients in the LELD group, 6.80% in the SELD group, 4.82% in the NOLD group, and 8.76% in the control group were diagnosed with neuropathy (axonal, predominantly sensory). Multivariate logistic analysis indicated that the risk of neuropathy was not influenced by disease duration, severity, or sex. The risk of neuropathy increased by approximately 8% for each year of age (P < 0.001; odds ratio [OR], 1.08; 95% confidence interval [CI], 1.037‐1.128). The risk of neuropathy was 2.38 higher in the LELD group than in the control group (P = 0.022; OR, 2.38; 95% CI, 1.130‐5.014). In a comparison between patients with and without neuropathy (Students t test), the levodopa dose was higher (P < 0.0001), serum vitamin B12 levels were lower (P = 0.0102), and homocysteine levels were higher (P < 0.001) in the patients with neuropathy. Our results demonstrate that the duration of exposure to levodopa, along with age, is the main risk factor for the development of neuropathy. Screening for homocysteine and vitamin B12 levels and clinical‐neurophysiological monitoring for neuropathy may be advisable in patients with PD who are receiving treatment with levodopa.


Movement Disorders | 2009

Restless legs syndrome in multiple sclerosis: A case‐control study

Marcello Deriu; Giovanni Cossu; Andrea Molari; Daniela Murgia; Alessandra Mereu; Paola Ferrigno; Davide Manca; Paolo Contu; Maurizio Melis

The aim of our study was to explore restless legs syndrome (RLS) frequency in multiple sclerosis (MS)‐patients and establish whether RLS could be a symptom of MS. Over a period of 1 year, we consecutively enrolled 202 MS‐patients and 212 healthy controls, matched for sex and age, in a case‐control study. All of them filled in a structured questionnaire according to IRLSSG criteria. Those patients who fit the diagnostic criteria were subsequently examined by a neurologist to verify the effective presence of RLS. A total of 91 MS‐patients (45%) responded positively to the questionnaires. The diagnosis of RLS was carried out in 29subjects (14.4%). Among the healthy controls, a definite diagnosis of RLS was achieved only in 6 subjects (2.8%). The risk of MS patients to present RLS was significantly higher (OR.5.76 P:0.00002) than the general population. None of them was affected by other medical conditions related to RLS developing. The 62 remaining patients presented numbness and weakness of the legs not suggestive of RLS. Our findings confirm a significant correlation between MS and RLS. In our opinion, MS must be definitively included among RLS causes.


Movement Disorders | 2006

Prevalence of primary blepharospasm in Sardinia, Italy: A service-based survey

Giovanni Cossu; Alessandra Mereu; Marcello Deriu; Maurizio Melis; Andrea Molari; Giannina Melis; Laura Minafra; Tiziana Pisano; Carlo Cianchetti; Enzo Ortu; Gianfranco Sau; Isidoro Cesare Giuseppe Aiello; Miriana Fresu; Maria Giovanna Marrosu; Paolo Contu

We performed a service‐based epidemiological study of primary blepharospasm in the island of Sardinia (Italy). Due to its favorable geographical location, we are confident we will provide reliable data from patients seeking botulinum toxin treatment. A total of 53 patients were assessed. Prevalence was estimated to be 32.2 per 1 million (95% confidence interval, 23.0–40.8). These results are in line with those obtained in other similar surveys, that is, record‐based, and performed in various European regions such as Northern England, the Munich area, as well as the Epidemiologic Study of Dystonia in Europe.


Clinical Practice & Epidemiology in Mental Health | 2012

Antonovsky’s Sense of Coherence Scale: Cultural Validation of Soc Questionnaire and Socio-Demographic Patterns in an Italian Population

Claudia Sardu; Alessandra Mereu; Alessandra Sotgiu; Laura Andrissi; Maria Katarina Jacobson; Paolo Contu

Background: The theory of salutogenesis entails that the ability to use resources for one’s wellbeing is more important than the resources themselves. This ability is referred to as the Sense of Coherence (SOC). This paper present the cross-culturally adapted version of the Italian questionnaire (13 items), and the psychometric and statistical testing of the SOC properties. It offers for the first time a view of the distribution of SOC in an Italian sample, and uses a multivariate method to clarify the effects of socio-demographic determinants on SOC. Methods: The cross-cultural adaptation of the English SOC questionnaire was carried out according to the guidelines reported in literature. To evaluate the psychometric and statistical properties we assessed reliability, validity and frequency distribution of the collected data. A Generalised Linear Model was used to analyse the effects of socio demographic variables on SOC. Results: The Italian SOC scale demonstrates a good internal consistency (α = 0.825). The model obtained with factorial analysis is not related to the traditional dimensions of SOC represented in more than one factor. The multivariate analysis highlights the joint influence of gender, age and education on SOC. Conclusion: The validated Italian questionnaire is now available. Socio-demographic variables should be taken into account as confounders when SOC values among different populations are compared. Presenting data on SOC of the Italian population makes a control population available for comparisons with specific subgroups, such as patient populations. Now, the Italian challenge is to integrate the salutogenic approach into Public Health police.


Journal of Epidemiology and Community Health | 2006

Smoking trends in Italy from 1950 to 2000

Claudia Sardu; Alessandra Mereu; G Pitzalis; Luigi Minerba; Paolo Contu

Study objective: To assess how the prevalence of smokers in Italy from 1950 to 2000 has changed, in parallel with law development and the growing attention towards smoking prevention. Design, setting, and participants: Historical data on smoking trends have been obtained using data collected in 2000 by the National Institute of Statistics. A correction coefficient is proposed to overcome the bias of differential mortality reported in other papers. The sample is made up of 102 261 people aged 15–69 years. Main results: A general downward trend is seen; there is a more pronounced decrease starting from 1975 to 1980. In both sexes the peak prevalence tends to decrease according to the birth cohort because of the earlier age in which they gave up. A partial exception to the decline of tobacco use in recent years may be made for the 15–19 year-old age group, which has remained stable since 1990. Conclusions: Although a comprehensive community programme against tobacco was not developed, the different prevention actions implemented in Italy have contributed to a change in attitude and behaviour. The effect of tobacco control strategies implemented in Italy until now is more evident in relation to the breaking of the smoking habit, which happens at an increasingly younger age, although it is not clear how much it is able to prevent people from starting smoking.


Clinical Practice & Epidemiology in Mental Health | 2013

Trauma- and Stressor Related Disorders in the Tuareg Refugees of a Camp in Burkina Faso

Mauro Giovanni Carta; F. Wallet Oumar; Maria Francesca Moro; Daniela Moro; Antonello Preti; Alessandra Mereu; Dinesh Bhugra

Background: Post-traumatic stress disorder (PTSD) is reported to be common among refugees. We set out to explore risk of Trauma- and Stress-or-Related Disorders and the associated burden of psychological distress in a refugee camp of Malian Refugees in Burkina Faso. Methods: One out of five persons living in the camp was selected randomly and interviewed using the French version of the Short Screening Scale for PTSD and the validated K6 scale to measure psychiatric morbidity. Results: Around 60% of the interviewed sample (N=408) met the criteria for Trauma- and Stress-or-Related Disorders and also reported severe mental distress on K6 scores. Women aged 40 and over were found to be at higher risk of Trauma- and Stress-or-Related Disorders whereas young people (39 or younger) scored higher on K6 ratings. Around 83% of the surveyed subjects had a family member killed in the war, 91% a relative in the war, more than 80% had a family member suffering from physical injuries, and 90% reported problems with food and housing. The frequency of these life events was not surprisingly higher in persons with Trauma- and Stress-or-Related Disorders, with the death of a family member and severe problems with food being specifically related to them.Conclusion: These results point to important psychological suffering in a population that is often ignored by the media and international political authorities. Immediate steps are required to provide urgent legal and humanitarian protection to those who are forced to flee their homes and cross international borders because of disasters.


Neurological Sciences | 2015

Levodopa–carbidopa intrajejunal gel in advanced Parkinson disease with “on” freezing of gait

Giovanni Cossu; Valeria Ricchi; Manuela Pilleri; Francesca Mancini; Daniela Murgia; Gianluigi Ricchieri; Alessandra Mereu; Maurizio Melis; Angelo Antonini

AbstractFreezing of gait is a common and disabling disorder in advanced Parkinson’s disease (PD). The relationship with dopaminergic medication is complex and often non-linear, thus freezing may occur even when the core parkinsonian features (tremor, rigidity and bradykinesia) appear optimally controlled. We evaluated the effect of Levodopa–carbidopa intrajejunal gel in a group of seven non-demented PD patients with prominent episodes of freezing refractory to adjustments of oral therapy. Clinical assessments were performed in the best “on” state before starting Levodopa–carbidopa intrajejunal gel, while patients were on their standard oral Levodopa (O-LD), and infusion treatment. The main outcome measures were change in freezing of gait (FOG) Questionnaire and UPDRS motor score. FOG Questionnaire and UPDRS subscores related to gait and postural stability significantly improved during Levodopa–carbidopa intrajejunal gel infusion in all patients compared to O-LD treatment. In four out of seven patients, the Levodopa–carbidopa intrajejunal gel dose was equivalent or slightly higher but in three patients was lower compared to O-LD dose recorded at baseline visit. In selected patients, Levodopa–carbidopa intrajejunal gel may improve freezing refractory to oral dopaminergic therapy.


Global Health Promotion | 2012

A bottom-up art event gave birth to a process of community empowerment in an Italian village

Claudia Sardu; Alessandra Mereu; Alessandra Sotgiu; Paolo Contu

Although community participation is a component of community empowerment, it often remains a theoretical exhortation. Reporting experiences which enable people to take control of their lives, can be useful to suggest practical elements for promoting empowerment. This article describes the experience of a Sardinian village (Ulassai), that developed into a community empowerment. The Laverack’s operational domains were used to measure the community empowerment process. The process started in 1979 ‘almost by chance’ with an art performance that was the entry point for community participation. This experience has been the foundation for the community empowerment. Citizens acquired the ‘ability of thinking and planning as a community and not mere individuals’. In the following 30 years citizens gave birth to several outcomes rooted in that event. The intermediate outcomes highlight the ‘ability of action by a group to mobilize existing resources, and act collectively against opposing forces’. The long-term outcomes demonstrate the ‘ability to integrate the cultural experiences that strengthened the community’s identification into a sustainable community asset’, and the ‘ability to cope with global environmental challenges and to collaborate on an equal basis with other stakeholders. The pathways to community empowerment, showed by the community of Ulassai, overlap with the ‘operational domains’. The Ulassai experience shows that the empowerment process can start from an event apparently unrelated to health promotion. This community experience illustrates the positive role arts can play in community development. Hence, the call for health promoters to look carefully into those situations that occur naturally in communities.


Substance Use & Misuse | 2009

Smoking trends and educational level in Italy in the age group 20-24, from 1950 to 2000.

Alessandra Mereu; Claudia Sardu; Luigi Minerba; Paolo Contu

Smoking represents an important world research issue because of its diffusion among people and its effects on health. This study analyses, according to gender and educational level, the prevalence of smoking, in order to highlight the relationship between sociocultural status and smoking. Prevalence was calculated, with reference to Italian national data in 2000, by dividing a weighted population of 38,720,629 into 10 five-year birth cohorts. Results suggest that smoking is no longer perceived as being socially acceptable behavior. The prevalence declines for both sexes and educational levels, but in low educational levels the decline is slower. The study limitations are noted.

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Paolo Contu

University of Cagliari

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