Christian Pradier

Dr. Christian Pradier


Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 August 2014 in PLOS ONE
Verified
Journal Article
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CPChristian Pradier
Christian Pradier
CSCharlotte Sakarovitch
Charlotte Sakarovitch
FDFranck Le Duff
Franck Le Duff
RLRichard Layese
Richard Layese
AMAsya Metelkina
Asya Metelkina
PRPhilippe Robert
Philippe Robert
Was firstly to describe the MMSE (Mini-Mental State Examination) score upon initial diagnosis of Alzheimer's disease and related disorders among the French population, according to age. Secondly, education, gender and place of residence were studied as factors potentially associated with delayed Alzheimer's disease diagnosis. we conducted a cross sectional analysis of the French National Alzheimer database (BNA). Data from 2008 to 2012 were extracted. Patients were selected at the moment of their first diagnosis of AD (n = 39,451). The MMSE score at initial diagnosis dropped significantly with increasing age. The test score increased with the degree of educational background regardless of age. Gender and place of residence were significantly related to the MMSE score, women and persons living in medical institutions having lower MMSE scores under the age of 90 years and at all educational levels. Health care professionals should be aware of these risk factors in order to maximize chances of earliest possible diagnosis of Alzheimer's disease and related disorders.


15 July 2023 in Cancers
Verified
Journal Article
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LGLauren Greenberg
Lauren Greenberg
LRLene Ryom
Lene Ryom
EBElzbieta Bakowska
Elzbieta Bakowska
FWFerdinand Wit
Ferdinand Wit
HBHeiner C. Bucher
Heiner C. Bucher
OGon behalf of the RESPOND and D:A:D Study Groups
on behalf of the RESPOND and D:A:D Study Groups
Despite cancer being a leading comorbidity amongst individuals with HIV, there are limited data assessing cancer trends across different antiretroviral therapy (ART)-eras. We calculated age-standardised cancer incidence rates (IRs) from 2006–2021 in two international cohort collaborations (D:A:D and RESPOND). Poisson regression was used to assess temporal trends, adjusted for potential confounders. Amongst 64,937 individuals (31% ART-naïve at baseline) and 490,376 total person-years of follow-up (PYFU), there were 3763 incident cancers (IR 7.7/1000 PYFU [95% CI 7.4, 7.9]): 950 AIDS-defining cancers (ADCs), 2813 non-ADCs, 1677 infection-related cancers, 1372 smoking-related cancers, and 719 BMI-related cancers (groups were not mutually exclusive). Age-standardised IRs for overall cancer remained fairly constant over time (8.22/1000 PYFU [7.52, 8.97] in 2006–2007, 7.54 [6.59, 8.59] in 2020–2021). The incidence of ADCs (3.23 [2.79, 3.72], 0.99 [0.67, 1.42]) and infection-related cancers (4.83 [4.2, 5.41], 2.43 [1.90, 3.05]) decreased over time, whilst the incidence of non-ADCs (4.99 [4.44, 5.58], 6.55 [5.67, 7.53]), smoking-related cancers (2.38 [2.01, 2.79], 3.25 [2.63–3.96]), and BMI-related cancers (1.07 [0.83, 1.37], 1.88 [1.42, 2.44]) increased. Trends were similar after adjusting for demographics, comorbidities, HIV-related factors, and ART use. These results highlight the need for better prevention strategies to reduce the incidence of NADCs, smoking-, and BMI-related cancers.

12 August 2021 in Journal of Clinical Medicine
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Journal Article
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MVMatteo Vassallo
Matteo Vassallo
SMSabrina Manni
Sabrina Manni
CKCamille Klotz
Camille Klotz
RFRoxane Fabre
Roxane Fabre
PPPaola Pini
Paola Pini
CPChristian Pradier
Christian Pradier
Objectives: The variant alpha COVID-19 rapidly spread across Europe in early 2021. While this variant’s increased infectivity has been proven, little is known of its clinical presentation and outcomes compared to the old strain. Methods: We identified patients admitted to the Cannes General Hospital for variant alpha-related COVID-19 infection from January to April 2021. Their main demographic parameters, inflammatory markers and clinical characteristics were recorded. Patients admitted from October to December 2020 for 20E (EU1) COVID-19 were selected as controls. Differences between groups were analyzed. Results: We included 157 patients (mean age 73 years; 58% men; mean delay of symptoms 6.9 days). Comorbidities were present in 92% (mainly hypertension, diabetes and obesity or overweight). The prevalence of comorbidities did not differ between groups. In 28% of cases, patients either died or required transfer to the Intensive Care Unit (ICU). The cause of death or of transfer to the ICU was presumably associated with severe pneumonia. Variant alpha COVID-19 had 3.8-fold higher risk of death or transfer to the ICU compared to the old strain. Discussion: Patients infected with variant alpha COVID-19, despite similar background characteristics, had a higher risk of unfavorable outcomes than those infected with the old strain, suggesting increased virulence related to this variant.

10 July 2021 in BMC Public Health
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Journal Article
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LBLaurence Bentz
Laurence Bentz
Stéphanie VandentorrenStéphanie Vandentorren
Stéphanie Vandentorren
RFRoxane Fabre
Roxane Fabre
JBJeremy Bride
Jeremy Bride
PPPhilippe Pirard
Philippe Pirard
CPChristian Pradier
Christian Pradier
The Nice terror attack of July 14, 2016 resulted in 84 deaths and 434 injured, with many hospital staff exposed to the attack, either as bystanders on site at the time of the attack (‘bystander exposure’) who may or may not have provided care to attack victims subsequently, or as care providers to victims only (‘professional exposure only’). The objective of this study is to describe the impact on mental health among hospital staff by category of exposure with a particular focus on those with ‘professional exposure only’, and to assess their use of psychological support resources. An observational, cross-sectional, multicenter study conducted from 06/20/2017 to 10/31/2017 among all staff of two healthcare institutions in Nice, using a web questionnaire. Collected data included social, demographic and professional characteristics; trauma exposure category (‘bystanders to the attack’; ‘professional exposure only’; ‘unexposed’); indicators of psychological impact (Hospital Anxiety and Depression Scale); PTSD (PCL-5) level; support sought. Responders could enter open comments in each section of the questionnaire, which were processed by inductive analysis. 804 staff members’ questionnaires were analysed. Among responding staff, 488 were exposed (61%): 203 were ‘bystanders to the attack’, 285 had ‘professional exposure only’. The staff with ‘professional exposure only’ reported anxiety (13.2%), depression (4.6%), suicidal thoughts (5.5%); rates of full PTSD was 9.4% and of partial PTSD, 17.7%. Multivariate analysis in the ‘professional exposure only’ category showed that the following characteristics were associated with full or partial PTSD: female gender (OR = 2.79; 95% CI = 1.19–6.56, p = 0.019); social isolation (OR = 3.80; 95% CI = 1.30–11.16, p = 0.015); having been confronted with an unfamiliar task (OR = 3.04; 95% CI = 1.18–7.85; p = 0.022). Lastly, 70.6% of the staff with ‘professional exposure only’ with full PTSD did not seek psychological support. Despite a significant impact on mental health, few staff with ‘professional exposure only’ sought psychological support. Robust prevention and follow-up programs must be developed for hospital staff, in order to manage the health hazards they face when exposed to exceptional health-related events such as mass terror attacks. Ethical approval for the trial was obtained from the National Ethics Committee for Human Research (RCBID N° 2017-A00812–51).

2 May 2018 in BMC Cardiovascular Disorders
Verified
Journal Article
Open access
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MFMarion Fournier
Marion Fournier
RRRémi Radel
Rémi Radel
LBLaurent Bailly
Laurent Bailly
CPChristian Pradier
Christian Pradier
RFRoxane Fabre
Roxane Fabre
FDFabienne D’aRripe-Longueville
Fabienne D’aRripe-Longueville
The benefits of supervised physical activity programs in cardiac rehabilitation have been amply demonstrated, but the quantity of physical activity often declines quickly once supervision ends. This trial assesses the effectiveness of an experimental intervention drawing on habit formation theory to maintain physical activity. Cardiovascular patients (N = 47) were randomly assigned to one of two groups. The first group participated in two supervised physical activity (SPA) sessions per week for 20 weeks. The second group was offered a progressively autonomous physical activity (PAPA) program as follows: the same supervised program as the SPA group for 10 weeks and then a further 10 weeks with one supervised session replaced by a strategy to build and sustain the habit of autonomous physical activity. The International Physical Activity Questionnaire (IPAQ; Craig et al. Med Sci Sports Exerc 35(8):1381–1395, 2003) was used to measure the quantity of physical activity, which was the primary outcome. The number of participants was limited, and we thus took multiple IPAQ measurements (at 0, 5, 7, 9 and 12 months after the start of the intervention) and used a mixed model for analysis. Physical condition, automaticity of the physical activity behavior, motivation, and quality of life were examined for changes. No significant between-group differences were noted for physical activity behaviors after the program, physical condition, motivation, or behavioral automaticity. The PAPA group nevertheless completed more PA sessions during the intervention, and their quality of life was significantly higher than that of the SPA group at 12 months. Although the number of supervised sessions was lower, the progressively autonomous PA program resulted in the same or even higher positive outcomes than the fully supervised PA program. Current Controlled Trials ISRCTN77313697 , retrospectively registered on 20 November 2015.