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Dive into the research topics where Antoine Vilotitch is active.

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Featured researches published by Antoine Vilotitch.


Aids Care-psychological and Socio-medical Aspects of Aids\/hiv | 2014

Health-related quality of life of people living with HIV followed up in hospitals in France: comparing trends and correlates between 2003 and 2011 (ANRS-VESPA and VESPA2 national surveys)

Taoufiq Douab; Fabienne Marcellin; Antoine Vilotitch; Camelia Protopopescu; Marie Préau; Marie Suzan-Monti; Luis Sagaon-Teyssier; Maria Patrizia Carrieri; Rosemary Dray-Spira; Bruno Spire

In recent years, France has witnessed both structural changes in the population of people living with HIV and a relative improvement in the social representation of HIV infection. However, potential changes in peoples day-to-day experience with HIV have not been documented. We used data from the national surveys ANRS-VESPA (2003) and VESPA2 (2011) to compare the levels and patterns of correlates of health-related quality of life (HRQL) in adult HIV-infected patients followed up in French hospitals over a period of eight years. Mean physical and mental SF-12 scores were compared (VESPA, n = 2072; and VESPA2, n = 2267) using analysis of variance (ANOVA) F tests. Heckman regression models were then used to identify independent correlates of physical and mental quality of life in the two surveys, while accounting for possible bias due to missing score values. A common set of potential socio-demographic, clinical, behavioral, and psychosocial correlates was tested. Individuals reported a decrease in physical quality of life in VESPA2 compared with VESPA (mean score (standard error): 47.5 (0.2) versus 49.6 (0.2), p < .0001), and better mental HRQL (44.3 (0.3) versus 42.3 (0.3), p < 0.0001). In both surveys, financial difficulties and patient-perceived experience of rejection behaviors by medical staff were independently associated with impaired physical and mental quality of life. Older age and unemployment were independently associated with impaired physical quality of life. Immigrants from Sub-Saharan Africa reported better mental quality of life. Findings show that quality of life levels in adult HIV-infected patients followed up at hospital in France has significantly, yet modestly, changed in recent years. However, the pattern of quality of life correlates has remained relatively stable. The impact of patient–provider relationships on self-reported outcomes is confirmed. Further research is needed to identify potential differences in quality of life correlates in specific subgroups of patients, such as men who have sex with men, women, immigrants, and injecting drug users.


Aids Care-psychological and Socio-medical Aspects of Aids\/hiv | 2016

Heterosexual practices of women and men living with HIV attending hospital outpatient services (ANRS-VESPA2 survey): a French comparative study with the general population (CSF survey)

V. Boyer; Antoine Vilotitch; H. Panjo; Luis Sagaon-Teyssier; Fabienne Marcellin; Rosemary Dray-Spira; Bruno Spire; N. Bajos

ABSTRACT HAART has improved the well-being of many people living with HIV (PLWH). This study aimed at (i) comparing heterosexual practices between PLWH and the general population by gender, and (ii) identifying factors associated with sexual practices and at-risk behaviors in the two populations. Self-reported data were collected among PLWH attending hospitals (VESPA2 survey; n = 3022) and the general population (CSF survey; n = 10,280). Significant differences between the two samples were corrected for by implementing propensity score matching on both socio-demographic characteristics and sexual behavior in terms of number of partners. Men not reporting heterosexual intercourse were excluded. After matching, 61% of women (out of 707) and 68% of men (out of 709) were sexually active in both populations. PLWH practiced oral sex less than the general population and used condoms more consistently over the previous 12-month period, irrespective of having multiple sexual partners or not. For women living with HIV: those with several sexual partners and those consuming drugs over the previous 12 months were more likely to practice oral sex; those living in a couple for at least 6 years and migrants were less likely to practice anal intercourse. For men living with HIV: those reporting bisexual relationships and those with multiple sexual partners over the previous 12 months were more likely to practice anal heterosexual intercourse; migrants reported less oral sex, irrespective of HIV status. Error term correlations showed that anal intercourse was not linked to condom use for women or men from either population. Our results show that PLWH had a lower rate of heterosexual practices compared with the general population, and used condoms more often, irrespective of the number of sexual partners and strong cultural background (e.g., for Sub-Saharan African women). Further preventive information needs to be disseminated on the risk of infection transmission through heterosexual anal intercourse.


Journal of Viral Hepatitis | 2018

Daily cannabis and reduced risk of steatosis in human immunodeficiency virus and hepatitis C virus-co-infected patients (ANRS CO13-HEPAVIH)

S. Nordmann; Antoine Vilotitch; Perrine Roux; Laure Esterle; Bruno Spire; Fabienne Marcellin; Dominique Salmon-Ceron; François Dabis; J. Chas; D. Rey; Linda Wittkop; Philippe Sogni; Patrizia Carrieri

Liver steatosis is common in human immunodeficiency virus (HIV)‐hepatitis C virus (HCV)‐co‐infected patients. Some recent studies have found that cannabis use is negatively associated with insulin resistance in the general population and in HIV‐HCV‐co‐infected patients. Given the causal link between insulin resistance and steatosis, we hypothesized that cannabis use has a positive impact on steatosis. Therefore, we aimed to study whether cannabis use in this population was associated with a reduced risk of steatosis, measured by ultrasound examination. ANRS CO13‐HEPAVIH is a French nationwide multicentre cohort of HIV‐HCV‐co‐infected patients. Medical and socio‐behavioural data from clinical follow‐up visits and annual self‐administered questionnaires were prospectively collected. A cross‐sectional analysis was conducted using data from the first visit where both ultrasound examination data for steatosis (positive or negative diagnosis) and data on cannabis use were available. A logistic regression model was used to evaluate the association between cannabis use and steatosis. Among study sample patients (n = 838), 40.1% had steatosis. Fourteen per cent reported daily cannabis use, 11.7% regular use and 74.7% no use or occasional use (“never or sometimes”). Daily cannabis use was independently associated with a reduced prevalence of steatosis (adjusted odds ratio [95% CI] = 0.64 [0.42;0.99]; P = .046), after adjusting for body mass index, hazardous alcohol consumption and current or lifetime use of lamivudine/zidovudine. Daily cannabis use may be a protective factor against steatosis in HIV‐HCV‐co‐infected patients. These findings confirm the need for a clinical evaluation of cannabis‐based pharmacotherapies in this population. Eudract.ema.europa.eu number, DGS050367.


PLOS ONE | 2017

Pain in methadone patients: Time to address undertreatment and suicide risk (ANRS-Methaville trial)

Sandra Nordmann; Antoine Vilotitch; Caroline Lions; Laurent Michel; Marion Mora; Bruno Spire; Gwenaelle Maradan; Marc-Karim Bendiane; Alain Morel; Perrine Roux; Patrizia Carrieri

Background Pain in opioid-dependent patients is common but data measuring the course of pain (and its correlates) using validated scales in patients initiating methadone treatment are sparse. We aimed to assess pain and its interference in daily life, associated correlates, and undertreatment before and during methadone treatment. Methods This is a secondary analysis using longitudinal data of a randomized trial comparing two methadone initiation models. We assessed the effect of methadone initiation and other correlates on pain intensity and interference (using the Brief Pain Inventory) at months 0, 6 and 12 using a mixed multinomial logistic regression model. Results The study group comprised 168 patients who had data for either pain intensity or interference for at least one visit. Moderate to severe pain was reported in 12.9% of patients at M0, 5.4% at M6 and 7.3% at M12. Substantial interference with daily functioning was reported in 36.0% at M0, 14.5% at M6 and 17.1% at M12. Of the 98 visits where patients reported moderate to severe pain or substantial interference, 55.1% reported no treatment for pain relief, non-opioid analgesics were reported by 34.7%, opioid analgesics by 3.1% and both opioid and non-opioid analgesics by 7.1%. Methadone was associated with decreased pain intensity at 6 months (OR = 0.29, p = 0.04) and 12 months (OR = 0.30, p = 0.05) of follow-up and tended to be associated with substantial pain interference. Suicide risk was associated with both pain intensity and pain interference. Conclusions Methadone in opioid-dependent patients can reduce pain. However, undertreatment of pain in methadone patients remains a major clinical concern. Patients with pain are at higher risk of suicide. Adequate screening and management of pain in this population is a priority and needs to be integrated into routine comprehensive care.


International Journal of Drug Policy | 2017

Decrease in self-reported offences and incarceration rates during methadone treatment: A comparison between patients switching from buprenorphine to methadone and maintenance treatment incident users (ANRS-Methaville trial)

Patrizia Carrieri; Antoine Vilotitch; Sandra Nordmann; Caroline Lions; Laurent Michel; Marion Mora; Alain Morel; Gwenaelle Maradan; Bruno Spire; Perrine Roux

BACKGROUND Patients receiving buprenorphine who are poor responders can continue to commit drug-related offences. Switching them from buprenorphine to methadone may result in reduced criminal behaviour. We compared self-reported offences and incarceration before and after starting methadone treatment of patients switching from buprenorphine (PSB) and maintenance treatment incident users (MIU). METHODS Data on offences, incarceration and other information, were obtained via a telephone interview. Mixed models were used to assess the impact of methadone initiation and being PSB or MIU on (1) the number of days when offences were committed (drug sale, drug purchase, other offences) and (2) experiencing incarceration during the previous 6 months. RESULTS Among the 176 patients with at least one assessment for self-reported offences, 51.7% were PSB. Receiving methadone was significantly associated with a reduction in the number of days when drug sale or drug purchase offences were committed, but not other offences. PSB and MIU groups were different only for drug purchase, as PSB were more likely to have a higher number of days of drug purchase from month 3 onwards. A reduction of 77% in the likelihood of experiencing incarceration was observed and this was comparable in PSB and MIU. CONCLUSION Switching non-responding buprenorphine patients to methadone can result in a major reduction in offences and incarceration rates. Increasing access to methadone, using more flexible models of care is urgent for clinical and public health reasons.


bioRxiv | 2018

Of Rats And Men: Peer Presence And Familiarity Are Key Factors Which Modulate Drug Intake

Elodie Giorla; Sandra Nordmann; Yann Pelloux; Perrine Roux; Silvia Rosellini; Karen Davranche; Christian Montanari; Antoine Vilotitch; Pascal Huguet; Patrizia Carrieri; Christelle Baunez

Stimulant use, including cocaine, is a major public health issue and decreasing intake can reduce associated harms. We used a translational research approach (experimental for rats and observational for humans) to explore the influence of peer presence and familiarity on the frequency of self-administered cocaine. In both rats and humans, we compared cocaine intake when alone with intake when peers with different characteristics (familiar or not, cocaine-naive or not, dominant or subordinate) were present. In both rats and humans, the risk of drug consumption was reduced when a peer was present and further diminished when the peer was unfamiliar (vs familiar). In rats, the presence of a cocaine-naive peer further decreased cocaine consumption. The presence of a non-familiar and drug-naive peer represents the key conditions to diminish cocaine intake. Our results indirectly support the use of social interventions and harm reduction strategies, in particular supervised consumption rooms for stimulant users.Social environment influences drug consumption, its persistence and evolution. Little is known regarding the influence of the presence of a peer during drug consumption and especially how the relationship between peers (familiarity and dominance) can influence drug consumption. We used here a translational and transdisciplinary approach to explore the influence of peer presence and peer familiarity in rats and humans that self-administer stimulants. In rats, cocaine intake was compared when rats were alone with intake when peers with different characteristics (familiar or not, cocaine naive or not, dominant or subordinate) were present. In humans, 77 cocaine and/or methylphenidate users were asked to detail their most recent drug use episodes and their relationship with peers present at consumption. The results show that in both humans and rats, the risk of cocaine/stimulant consumption was significantly reduced by 37% and 32%, respectively, when a peer was present. Moreover, the lowest risk of consumption was consistently observed when the peer was unfamiliar (vs familiar) with a further 38% and 17% risk reduction, respectively. In rats, a decreased risk of consumption was greater when the peer was cocaine naive (vs non-cocaine naive). The presence of a non-familiar and possibly drug-naive peer is the most efficient condition to diminish stimulant intake. Our results indirectly support the use of harm reduction strategies, in particular supervised consumption rooms for stimulant users.


Aids and Behavior | 2018

Assessement of Awareness of, Concerns and Attitudes Towards HIV-Related Court-Case Sentences in France in a Representative Sample of People Living with HIV (ANRS VESPA2 Survey)

Marie Suzan-Monti; Michel Celse; Antoine Vilotitch; Baptiste Demoulin; Rosemary Dray-Spira; Patrick Yeni; Bruno Spire

Some of the 12 criminal trials and sentences in France for HIV transmission in 1998–2011 attracted substantial public attention, with a possible negative impact on people living with HIV (PLWH) through reinforced stigma and discrimination. This analysis aimed to characterize PLWH enrolled in the representative ANRS-VESPA2 survey, aware of and concerned about convictions for HIV transmission. Being a migrant from Sub-Saharan Africa, having difficult socio-economic conditions, having unprotected sex with one’s main partner and concealing one’s HIV status were all factors statistically associated with concern about the sentences. Participants tempted to press charges against someone for infecting them were more likely to be younger, women, not living in a couple, unemployed, and to report a major depressive disorder. Concern about HIV-related criminal proceedings among the most vulnerable PLWH do not reflect the actual risk of prosecution they are exposed to.ResumenEn Francia, algunos de los 12 juicios y sentencias relacionados con la contaminación del VIH en 1998–2011 suscitaron considerablemente el interés público. Esto pudo impactar negativamente las personas viviendo con VIH (PVVIH) aumentando su estigmatización y discriminación. Este análisis busca caracterizar las PVVIH, de la encuesta ANRS-VESPA2, informadas acerca de esos juicios e inquietos por la posibilidad de implicación en uno de ellos. Ser inmigrante subsahariano, las condiciones socio-económicas desfavorables, las relaciones sexuales no protegidas con la pareja principal, y ocultar el VIH, están asociados a la posibilidad de ser implicados en un juicio. Por otro lado, aquellos que han intentado presentar cargos por contaminación del VIH fueron mayoritariamente jóvenes, mujeres, personas viviendo solas, desempleados, y personas en depresión. Los juicios por contaminación del VIH entre las PVVIH más vulnerables no reflejan el riesgo de acusación al que están expuestos.


Clinics and Research in Hepatology and Gastroenterology | 2017

Efficacy and safety of boceprevir-based triple therapy in HCV cirrhotic patients awaiting liver transplantation (ANRS HC29 BOCEPRETRANSPLANT)

Hélène Fontaine; Marianne Maynard; Cécile Bouix; Maria Patrizia Carrieri; Danielle Botta-Fridlund; L. D’Alteroche; Filomena Conti; Georges-Philippe Pageaux; Vincent Leroy; Sophie Metivier; Rodolphe Anty; F. Durand; V. Canva; Antoine Vilotitch; Pascal Lebray; Laurent Alric; Christophe Duvoux; Ventzislava Petrov-Sanchez; Frédérik Beaulieux; Célia Wellems; Christelle Paul; Anne-Marie Roque-Afonso; B. Roche; Pierre Pradat; Didier Samuel; Jean-Charles Duclos-Vallée; F. Bailly; Sébastien Dharancy; Jean-Didier Grangé; Amir Guidoum

BACKGROUND AND AIMS In this French multicentre, open-label study, we analyzed the efficacy, safety and patient-reported outcomes of a boceprevir-based triple therapy in HCV genotype 1 cirrhotic patients awaiting liver transplantation (LT). METHODS Patients received PEG-IFN/ribavirin (RBV) for 48 weeks (W) and boceprevir from W4 to W48 or until LT. RESULTS Fifty-one patients (80% males, median age: 56 years) were included. Fifty-seven percent had hepatocellular carcinoma and 43% end-stage liver disease. At enrolment, the median MELD score was 9 (range: 6-18); the Child-Pugh score was A in 65%, B in 35% and C in 2%. Therapy was discontinued because of severe adverse events (SAEs) in 39% of cases and virological inefficacy in 24%. 16% of patients had undetectable HCV RNA 24 weeks after the end of treatment (SVR24). LT was performed in 18 patients (35%). HCV RNA was undetectable in 16.6% at LT. Seven patients (14%) died and three deaths were attributed to treatment. SAEs (n=129) were observed in 84% of patients. Twenty-four percent of patients developed severe infections. Albumin<35g/L was independently associated with severe infection. Compared with baseline values, a significant decrease (P=0.02) of the physical dimension of health-related quality of life was observed between W4 and W24. The mean (95% CI) number of self-reported symptoms doubled during treatment (from 6.3 [4.8-7.7] to 11.8 [9.3-14.3]; P<0.001). CONCLUSIONS The safety of the PEG-IFN/RBV/boceprevir combination is poor in patients awaiting LT, with a high risk of severe infection. Moreover, the limited efficacy confirms the indication for IFN-free combinations in these patients.


Harm Reduction Journal | 2016

Correlates of cocaine use during methadone treatment: implications for screening and clinical management (ANRS Methaville study).

Perrine Roux; Caroline Lions; Antoine Vilotitch; Laurent Michel; Marion Mora; Gwenaelle Maradan; Fabienne Marcellin; Bruno Spire; Alain Morel; Patrizia Carrieri


Aids and Behavior | 2017

Disclosure of HIV Status Beyond Sexual Partners by People Living with HIV in France: A Call for Help? Results from the National Cross-Sectional Survey ANRS-VESPA2

Fabienne Marcellin; Marie Suzan-Monti; Antoine Vilotitch; Luis Sagaon-Teyssier; Marion Mora; Rosemary Dray-Spira; Marie Préau; Bruno Spire

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Bruno Spire

Aix-Marseille University

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Perrine Roux

Aix-Marseille University

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Marion Mora

Aix-Marseille University

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