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Biomedical subjects

J P Cassuto

Publications and source records attributed to J P Cassuto.

At least 19 recordsLinked to original sources

Incidence and risk factors of bacterial pneumonia requiring hospitalization in HIV-infected patients started on a protease inhibitor-containing regimen.

OBJECTIVE: To describe the incidence and risk factors of bacterial pneumonia occurring in patients treated with antiretrovirals. METHODS: In the ongoing APROCO (Anti-proteases) cohort, 1281 patients at the initiation of a protease inhibitor (PI)-containing antiretroviral regimen were enrolled from 1997-1999. All events requiring hospitalization during follow up are recorded. Of these, bacterial pneumonia was defined as the occurrence of a new pulmonary infiltrate with fever and either evidence of a bacteriological cause (definite cases) or favourable outcome with antimicrobial therapy (presumptive cases). Risk factors of bacterial pneumonia were studied using survival analyses. RESULTS: During a median follow up of 43 months, 29 patients had at least one episode of bacterial pneumonia, giving an incidence of 0.8/100 patient years. The 11 definite cases were attributable to Streptococcus pneumoniae (n=9), Legionella pneumophila (n=1) and Haemophilus influenzae (n=1). In multivariate analysis, bacterial pneumonia was significantly more frequent in older patients, injecting drug users, patients having a CD4 cell count>500 cells/microL at baseline and patients who initiated PI therapy with nonboosted saquinavir. It was significantly less frequent in nonsmokers. The occurrence of bacterial pneumonia was also associated with lower self-reported adherence to antiretroviral therapy and to higher plasma HIV-1 RNA levels during follow-up. CONCLUSIONS: Bacterial pneumonia occurs rarely in patients treated with a PI-containing regimen and may be associated with virological failure.

AIDS-Related Opportunistic Infections↗

In the era of highly active antiretroviral therapy, why are HIV-infected patients still admitted to hospital for an inaugural opportunistic infection?

OBJECTIVES: To identify factors related to delayed testing, and delayed or interrupted care-seeking or treatment uptake, among HIV-infected patients. DESIGN: HIV-infected patients hospitalized for an opportunistic infection (OI) cases were included in a prospective study and compared with controls matched by age and sex who had regular follow-up and treatment. Patients were asked to complete a questionnaire about their therapeutic itinerary and their socioeconomic, psychological and medical characteristics. RESULTS: Seventy patients were matched with 140 controls. According to their therapeutic itinerary prior to admission, cases were subdivided into four groups among which three will be more particularly studied: nontested patients (NT) (24%; n=17), known HIV-infected patients with no medical follow-up (NF) (30%; n=21); and noncompliant patients (NC) (36%, n=25). Characteristics of NT and NF patients included a predominantly sexual mode of contamination (P=0.01), continuing occupational activity (P=0.01) despite a low mean Karnofsky index (P=0.001) and unfavourable virological and immunological parameters. NT patients displayed a low degree of anxiety, and lacked awareness concerning risk of contamination and HIV-related symptoms. HIV-status announcement (P=0.04) and the benefits of medical follow-up (P=0.05) were less favourably perceived by NF patients than by controls, and were associated with a high degree of anxiety in NF patients. NC patients had a weaker commitment to follow-up and treatment, and more frequent treatment discontinuation associated with a higher rate of interruption of follow-up in a context of social difficulties. CONCLUSIONS: Patients ignorant of their HIV status, patients NF and NC have very specific characteristics. More appropriate approaches are needed regarding screening and access to care in order to reduce the incidence of delayed care-seeking.

AIDS-Related Opportunistic Infections↗

[Disseminated Penicillium marneffei infection suggesting visceral leishmaniasis in an HIV infected patient].

BACKGROUND: Penicilliosis is a fungal infection caused by Penicillium marneffei. In Southeast Asia, this infection is common in HIV-infected patients but few cases have been reported in Europe. CASE REPORT: The patient lived in southern France. He had HIV infection and was immunocompromised. The clinical signs suggested visceral leishmaniasis. Iterative travels to Southeast Asia were reported leading to the diagnosis of P. marneffei infection. DISCUSSION: In southern France, imported penicilliosis marneffei may be misdiagnosed as visceral leishmaniasis.

AIDS-Related Opportunistic Infections↗

Adherence to HAART in French HIV-infected injecting drug users: the contribution of buprenorphine drug maintenance treatment. The Manif 2000 study group.

OBJECTIVES: To assess adherence to highly active antiretroviral therapies (HAART) in a cohort of French patients infected by HIV through injection drug use (IDU), and the impact on adherence of buprenorphine ambulatory drug maintenance treatment (DMT) which has been widely introduced since 1996. DESIGN: Adherence assessment at first visit after initiation of HAART in the MANIF2000 cohort study. METHODS: Patient's face-to-face and self-administered questionnaires. Univariate and logistic regression adjusted odds ratios (OR) to compare characteristics of non-adherent versus adherent patients. RESULTS: Of the 164 patients, 34.8% took less than 80% of the prescribed HAART doses during the previous week. Decrease in viral load titres after initiation of HAART was significantly lower among non-adherent patients. After adjustment by logistic regression, non-adherence was associated with younger age, alcohol consumption, frequency of negative life-events during the prior 6 months and active drug use. However, IDU in buprenorphine DMT reached higher levels of adherence (78.1%) than ex-IDU (65.5%), although this difference did not reach statistical significance. CONCLUSION: Prescription of buprenorphine DMT may increase adherence to HAART among HIV-infected opiate-dependent patients. Reducing the negative impact of stressful life-events through psychosocial interventions should be considered, even for those who have stopped using drugs.

Adolescent↗

Clinical manifestations of visceral leishmaniasis associated with HIV infection: a retrospective study of 91 French cases.

A retrospective study was conducted in France to determine the clinical features of visceral leishmaniasis (VL) seen, between 1986 and 1997, in 91 patients co-infected with human immunodeficiency virus (HIV). Fever (87% of patients), splenomegaly (74%) and hepatomegaly (49%) were common, 43% of the patients having all of these signs and only 9% having none of them. Amastigotes were reported in atypical locations in 31 (34%) of the patients, and 15 patients had only had their VL diagnosed following accidental discovery of amastigotes in samples from their digestive tract and lungs (one), digestive tracts only (11 patients), lungs only (two), or skin (one). Some of the digestive symptoms observed are probably attributable to the intestinal infections with Leishmania. Overall, VL diagnosis was fortuitous in 27% of the subjects. Even in endemic areas, therefore, VL is not considered routinely by physicians attempting diagnoses.

Adult↗

HIV and Leishmania coinfection: a review of 91 cases with focus on atypical locations of Leishmania.

A retrospective study was conducted in France in 1998 to determine the clinical features of visceral leishmaniasis (VL) in 91 patients infected cocomitantly with human immunodeficiency virus. Our data suggest that the clinical manifestations of VL may be influenced by the immunological status, with atypical locations of Leishmania amastigotes more frequently found in severely immunocompromised patients. In such patients, the involvement of atypical locations may lead to the discovery of VL.

AIDS-Related Opportunistic Infections↗

[Visceral leishmaniasis associated with Wegener disease. Use of lipid complex amphotericin B and liposomal amphotericin B].

BACKGROUND: Leishmaniasis in a patient with Wegenerís disease raises the problem of amphotericin toxicity further compromising the pre-existing renal disorder. CASE REPORT: An anemic patient treated for Wegenerís disease developed visceral leishmaniasis. This renal failure patient was treated with lipid complex amphotericin B and liposomal amphotericin B. We report outcome at 10 months follow-up. DISCUSSION: The new formulations of amphotericin B allow effective treatment of visceral leishmaniasis in renal failure patients. Long-lasting results are probably favored by the interruption of immuno-suppressive therapy.

Acute Kidney Injury↗

Effect of indinavir and higher CD4+ T-cell count on viral load response after 6 months of highly active antiretroviral therapy.

This retrospective, unmasked chart review was undertaken to determine which HIV-infected patients receiving protease inhibitors (PIs) for the first time were most likely to experience a decrease in plasma viral load (PVL) and which factors were associated with a PVL < 500 copies/mL below the detectable limits after 6 months. A total of 308 patients aged > 15 years with a PVL > 500 copies/mL received therapy that included a PI in addition to other antiretroviral therapies (128 patients, saquinavir hard-gel capsule 600 mg TID; 107 patients, indinavir 800 mg TID; and 73 patients, ritonavir 600 mg BID). The choice of drug was at individual clinicians' discretion. Patients were followed for a median of 10 (range, 6 to 21) months. Of the 128 patients who received saquinavir, 45% were switched to another PI (33%, indinavir; 12%, ritonavir). Seventy percent of the 73 patients initially given ritonavir were switched (45%, indinavir; 25%, saquinavir), as were 23% of the 107 patients initially given indinavir (15%, saquinavir; 8%, ritonavir). A total of 34.1% (n = 105) of patients achieved a PVL < 500 copies/mL; in 51.6%, PVL decreased > 0.5 log copies/mL. In this subgroup, both treatment-naive patients and those who were receiving a new combination of antiretroviral therapy when they started PI treatment had a more pronounced decline in PVL (P < 0.001). After adjustment by logistic regression analysis for age, sex, mode of transmission, and duration of highly active antiretroviral therapy (HAART), CD4+ cell count and initial type of PI received were independently associated with PVL < 500 copies/mL. In the present study, the treatment success rate was low (34.1%) compared with rates observed in randomized, controlled trials. A higher CD4+ cell count and use of indinavir at the initiation of HAART are associated with a better viral load response.

Adult↗

[Hospital medical students: a population at risk for accidental exposure to blood].

OBJECTIVE: Infections transmitted by blood such as viral hepatitis B and C or human immunodeficiency virus (HIV) are a true threat to health care workers. As medical students are exposed to accidental contamination during their hospital activities, we conducted a survey among medical students in Nice France to determine the frequency and circumstances of needle prick accidents and how the risk of blood exposure is managed. METHODS: A survey was conducted between December 1 and December 15, 1996 among second cycle medical students. An anonymous questionnaire was proposed to all students attending mandatory faculty classes. A blood-exposure accident was defined as a needle prick or a cut caused by another sharp object which occurred in the hospital. RESULTS: Among the 237 students enrolled in the classes, 200 (84%) responded to the survey. Among these, one-quarter had experienced a blood-exposure accident by needle prick. For students terminating their second cycle, this rate was 37%. In 58% of the cases, the accidents had occurred when the students were on duty (excepting hospital training courses). Blood drawing for gas measurements was the most frequent circumstance (44%). Only 39% of the students had declared the accident and 51% had had a serology control within 2 months. The serological status of the source patient was unknown to the students in nearly half the cases. Only one out of two students applied elementary safety measures systematically (gloves, not recapping the needle). Only 13% of the students stated they had received information about blood-exposure accidents and their prevention and less than 50% had a correct notion of the risk of hepatitis B and C and HIV transmission by needle pricks. CONCLUSION: The incidence of blood-exposure accidents in hospital medical students is high and probably underestimated by official statistics due to the low declaration rate. Measures should rapidly implemented to inform and train students on prevention. Our units are currently working with students, the medical faculty and the occupational medicine unit to reach these objectives.

Accidents, Occupational↗

[Observance during clinical trials in HIV infection. A discontinuity between patient history and trial logic].

OBJECTIVES: Describe and analyze the processes which lead to patient compliance or non-compliance in HIV treatment trials and to develop a model for strategies aimed at improving compliance and facilitating inclusion (adherence) of these patients. METHOD: First, 12 members of the health care teams at two day care clinics (Internal medicine unit, Sainte-Marguerite Hospital, Marseille and Hematology unit, Cimiez Hospital, Nice) were interviewed. In addition, 40 patients involved in the Delta trial (known compliance in 22, non compliance in 7, trial refusal in 7 and eligibility in 5 who were not invited to participate) responded in semi-directive discussions. RESULTS: The physicians found that the responses were a priori in agreement with patient compliance for those who had participated. Physicians tended to introduce "unofficial" criteria to select patients on the basis of "psychosociological" patterns. Patient agreement to begin the trial or to refuse inclusion and their compliance to medical prescriptions depended in part on their personal opinion concerning AIDS treatment. Patients who presevered in following medical prescriptions in the long-term trial adapted their lifestyle to the new care system (participation in the trial) and discussed their "adaptation" with the physician. The importance of the patient-physician relationship is of prime importance in the behavior of compliant patients. CONCLUSION: A communication strategy, reinforcing patient adherence at inclusion and favoring compliance during the trial should be part of the "basic rules" for controlled regulation of compliance in clinical trials.

Clinical Trials, Phase III as Topic↗

[Hemostasis anomalies and human immunodeficiency virus infection].

Because hemostasis disorder in HIV infected patients are frequent and have clinical effects, they have aroused the interest of internal medicine. Such anomalies are not yet clearly defined and include various parameters. Thrombocytopenia which is the most widespread and the best documented manifestation, whether of peripheral origin by immunological platelet destruction or of central origin by a shortage in platelet production, responds well to medical treatment, especially to zidovudine. The circulating anti-coagulants frequently observed in HIV infected patients, whether anti-phospholipid antibodies or anti-cardiolipines are mostly asymptomatic. Other coagulation disorders (affection of the inhibitory system or fibrinolysis) are rarely observed and generally have no clinical incidence. Apart from thrombocytopenias and thrombotic thrombocytopenic purpura the incidence of clinical signs (thrombotic or hemorrhagic accidents) in HIV infected patients is not higher than in an HIV-free population and respond to the same treatment.

Blood Coagulation Disorders↗