Biomedical subjects

A Bondurand

Publications and source records attributed to A Bondurand.

18 recordsLinked to original sources

PubMed2005

[Profile of HIV infected patients among blood donors in Abidjan, Côte d'Ivoire (1992-1999)].

The FonSIDA is a private clinic created in 1992 within the premises of the National Blood Transfusion Center of Abidjan (CNTS), the largest city in Côte d'Ivoire. It provides medical and psychological follow-up for blood donors which are diagnosed as HIV-infected. This Centre provides blood for transfusions in Abidjan and the surrounding area, which from 1992 to 1999 collected 263,398 blood units. In this period, 5574 subjects were detected HIV-positive. Among those, 1766 (32%) HIV infected blood donors came back to be tested for confirmation of HIV diagnosis. Since then, only 9% of the 5574 donors have been seen at least twice a year for medical and psychological follow-up. Women were more compliant than men in the FonSIDA Clinic: they constituted 62% of the 409 patients who were followed-up (p < 0.001). 53% of men had sex with prostitutes the year before HIV diagnosis. 67% of women stated voluntary abortion at least once. In the same period the systematic use of condoms was reported by only 7% of women and 5% of men. 22% of women and 28% of men reported having two or more sexual partners in the year before HIV diagnosis. The main aim of every blood center is to improve blood safety, particularly in developing countries. The appropriate counseling towards blood donors and especially those detected HIV positive can contribute to reduce new HIV infections in high HIV prevalence cities. Rate of compliance of HIV-infected patients to follow-up has risen to 11% in 1992-1994 to 60% in 1997-1999 and will contribute to reach this aim.

Acquired Immunodeficiency Syndrome↗

PubMed2002

[Bacillary angiomatosis in an adult infected with HIV-1 at an early stage of immunodepression in Abidjan, Côte d'Ivoire].

Human immunodeficiency virus (HIV)-associated bacillary angiomatosis has rarely been described in Africa. We report here the first case in Côte d'Ivoire. Although in industrialised countries bacillary angiomatosis has been described in patients with low CD4 count, this episode occurred in the first year following HIV-seroconversion in an adult patient with more than 500 CD4 cells per cubic millimetre. Symptoms rapidly and totally disappeared under erythromycin treatment, although with a relapse two years after the end of the first episode. In Africa where people living with HIV often present chronic cutaneous lesions, bacillary angiomatosis may be under-diagnosed. Bacillary angiomatosis must be systematically considered in face of lesions similar to Kaposi's sarcoma. Improving knowledge on symptoms of bacillary angiomatosis in Africa should lead to better treatment and a better estimation of its true frequency which may be underestimated.

AIDS-Related Opportunistic Infections↗

PubMed1997

Nutritional status and dietary intakes in human immunodeficiency virus (HIV)-infected outpatients in Abidjan, Côte D'Ivoire, 1995.

OBJECTIVE: To evaluate nutritional status and dietary intakes in HIV-outpatients in Abidjan, Côte d'Ivoire. DESIGN: Cross-sectional study. SETTING: In the Outpatients and Counselling Unit in the University Hospital in Treichville, and in the follow-up Unit of Blood Donors. SUBJECTS: 100 HIV-infected patients at different stages of the infection recruited consecutively in the two consultation services. MAIN OUTCOME MEASURES: Clinical, biological and anthropometric data were collected: weight, baseline weight, height, triceps skinfold (TS), arm circumference (AC), body mass index (BMI), muscular circumference (MC) and weight loss (WL). Dietary intake was estimated by the 24 h recall method. RESULTS: The M:F sex ratio was 1.1:1. Mean age was 32.5 y (30.7-34.4); 64% of the patients were symptomatic (S+). Mean weight was 58.7 kg (56.8-60.6) and mean BMI, 20.9 k/m2 (20.7-21.1); 67% of the patients had a BMI < 21.5 kg/m2. S+ patients had mean weight, BMI, AC and MC significantly lower than asymptomatic patients (P < 0.0001 = 0.001, 0.0003 and 0.004 respectively) and had suffered a more important WL (P < 0.0001). Immunodepressed patients had mean weight, AC and MC significantly lower than patients with a CD4 count > or = 200/mm3 (P = 0.04, 0.005 and 0.04 respectively). WL was independent of CD4 count. Protein, carbohydrate and fat intakes were respectively 59 g/24 h (52-66), 266 g/24 h (240-292) and 59 g/24 h (51-66). Energy mean intake was 7.6 MJ/24 h (6.9-8.4) and lower than WHO recommended intakes. CONCLUSIONS: In Abidjan, anthropometric parameters and dietary intakes of HIV-infected patients are worsened by clinical events. Nutritional intakes are generally lower than recommendations. Further studies are needed to determine if, in the African context, a causal relationship could exist between dietary intakes and nutritional status in HIV-infected patients.

Acquired Immunodeficiency Syndrome↗

PubMed1996

Induction of "tissue" transglutaminase in HIV pathogenesis: evidence for high rate of apoptosis of CD4+ T lymphocytes and accessory cells in lymphoid tissues.

Peripheral blood mononuclear cells and lymphoid tissues from HIV-infected individuals display high levels of "tissue" transglutaminase (tTG) with respect to seronegative persons. In asymptomatic individuals, > 80% of the circulating CD4+ T cells synthesize tTG protein and the number of these cells matches the level of apoptosis detected in the peripheral blood mononuclear cells from the same patients. In HIV-infected lymph nodes tTG protein is localized in large number of cells (macrophages, follicular dendritic cells, and endothelial cells), showing distinctive morphological and biochemical features of apoptosis as well as in lymphocytes and syncytia. These findings demonstrate that during the course of HIV infection, high levels of apoptosis also occur in the accessory cells of lymphoid organs. The increased concentration of epsilon(gamma-glutamyl)lysine isodipeptide, the degradation product of tTG cross-linked proteins, observed in the blood of HIV-infected individuals demonstrates that the enzyme accumulated in the dying cells actively cross-links intracellular proteins. The enhanced levels of epsilon(gamma-glutamyl)lysine in the blood parallels the progression of HIV disease, suggesting that the isodipeptide determination might be a useful method to monitor the in vivo rate of apoptosis.

Apoptosis↗

PubMed1996

Evidence for an in vivo superantigenic activity in human immunodeficiency virus-infected individuals.

In a previous study, we reported the existence of a specific anergy affecting selectively the V beta 8 subset in both CD4 and CD8 T cells from human immunodeficiency virus (HIV)-infected persons. Because this observation gives evidence for a previous in vivo activation of this subset by a superantigen, we further characterize, in the present study, this V beta 8-anergy associated with HIV infection. Molecular T cell receptor analysis indicates that the V beta 8-anergized T cells are polyclonal. Furthermore, we show the dependence of this anergy on the expression of allelic forms of HLA class II DRB1 molecules. These observations explain the frequency of anergic persons among HIV-infected donors (56%) and are consistent with a previous in vivo superantigenic activity. Comparative analyses of disease evolution between V beta 8 responder and anergic persons do not show any clear relation between the V beta 8 status and acquired immunodeficiency syndrome pathogenesis. However, the stability of the V beta 8 status, the absence of correlation with previous microbial infections, and the previously reported precocity of V beta 8 anergization are in favor of a strong association between the in vivo existence of a V beta 8-specific superantigen and HIV infection. Finally, the functional dichotomy we observe for all anergized donors between blood and lymph node T cells raises the question of the in vivo localization of the superantigenic activity.

Alleles↗

PubMed1996

[Value of selective prescription of preanesthetic laboratory tests].

The aim of this study was to determine the comparative value of routine or selective ordering of preoperative tests. 400 ASA I, II, III patients were enrolled in the study. Two periods were considered: a retrospective period where the patients (n = 200) underwent routine preoperative tests and a prospective period where the patients (n = 200) had only preoperative tests according to the results of questioning and clinical examination. During the retrospective period 1.408 tests were effected with 44 abnormal results. During the prospective period, the abnormal results among 855 prescribed tests were: 0.8% in ASA I patients, 7.5% in ASA II and 5.9% in ASA III patients. The ASA I patients had an average of 3.47 +/- 1.28 tests each, ASA II patients 4.50 +/- 1.21 and ASA III 7.50 +/- 1.50. No complication inducing sequelae or death could be linked to lacking tests. The mean cost of tests was reduced by 50 percent.

Adolescent↗

PubMed1995

Burns in Abidjan, Cote d'Ivoire.

Burns are frequent in Côte d'Ivoire with about 700 cases yearly registered in the three Teaching Hospitals of Abidjan (Yopougon, Treichville and Cocody). Unfortunately, no specialized substructure is equipped for treating these patients in the country. The aim of the retrospective study carried out during 1993 in the Burns Care Unit of the Teaching Hospital of Cocody is to illustrate the epidemiology of burns in a poorly developed country in West Africa. Faced with many problems and especially a lack of space, the burns care unit is fighting to become a burns centre, which may become functional in 1995. Regarding studies from other countries, the results from our service are comparable to those obtained in poorly developed countries, they are different from those notified in countries with a higher socioeconomic level where substructures and financial means allow more appropriate care. The Abidjan Burns Centre aims to improve the current preventive activities and to provide burned people with the best possible care.

Adolescent↗

PubMed1993

Excluding blood donors at high risk of HIV infection in a west African city.

OBJECTIVE: To examine the potential impact of deferral of blood donors at high risk of HIV infection in a west African city where blood is screened for HIV antibodies but no other special measures are taken to protect the blood supply. DESIGN: Cross sectional study. SETTING: National Blood Transfusion Centre and Project RETRO-CI, an international collaborative AIDS research project, Abidjan, Côte d'Ivoire. SUBJECTS: 1257 male first time blood donors. INTERVENTIONS: Blood donors were interviewed about demographic and behavioural characteristics and tested for HIV antibodies by enzyme immunoassay and, if positive, synthetic peptide based tests. MAIN OUTCOME MEASURES: HIV antibody status in relation to presence of behavioural risk factors; calculation of sensitivity, specificity, and predictive values of specific criteria for excluding HIV infected donors. RESULTS: The overall prevalence of HIV infection was 11.4%. The most important risk factors for HIV positivity were prostitute contact and being aged 30-39 years. For identifying seropositive donors individual criteria had sensitivity, specificity, and positive predictive values ranging from 15% to 98%, 38% to 91%, and 17% to 30% respectively. Prostitute contact in the past five years would have excluded 31% of all donors and 73% of HIV infected donors. 27% of those excluded would have been HIV positive. CONCLUSIONS: The widespread assumption that donor deferral is not feasible in sub-Saharan Africa needs reassessment. In Abidjan this approach was well accepted and potentially effective. Donor deferral requires evaluation as a strategy for improving blood safety in resource poor areas with high rates of HIV infection.

Adolescent↗

PubMed1992

Risk of HIV infection from transfusion with blood negative for HIV antibody in a west African city.

OBJECTIVE: To estimate the risk of infection with HIV (HIV 1 or HIV 2, or both) from transfusion of a screened unit of blood in a high prevalence area in west Africa. DESIGN: Retrospective cohort study for January-July 1991. SETTING: National Blood Transfusion Centre, Abidjan, Côte d'Ivoire. SUBJECTS: Repeat donors (5831 units of blood) and first time donors (5076 units) in the first five months of 1991. MAIN OUTCOME MEASURES: Prevalence and estimated incidence of HIV infection in repeat and first time donors; estimated rate of potentially infected, HIV antibody negative units; and rate of (false negative) potentially infected units assuming a laboratory test sensitivity of 99%. RESULTS: Overall HIV prevalence was 11.0% in first time donors and 2.1% in repeat donors. In the first seven months of 1991, 29 HIV antibody positive (27 HIV 1, 1 HIV 2, 1 dually reactive) donors with a seronegative unit of blood earlier in the year were identified; 26 had donated blood eight weeks or less before their estimated dates of seroconversion and may have been infectious (minimum rate 26/5831 (4.5/1000 potentially infected units)). Estimated incidence of infection in repeat donors was 1.2-2.5%. Laboratory test insensitivity would result in an estimated 1.1/1000 false negative units from first time donors and 0.2/1000 units from regular donors. The overall rate of potentially infected units (all donors, seroconversions, and errors) was estimated at 5.4-10.6/1000. CONCLUSIONS: The risk of HIV infection from a single unit of blood remains substantial (5.4-10.6/1000 units). To prevent infection from blood transfusion in areas of high incidence and prevalence of HIV all but absolutely essential transfusions should be avoided, and donors with low incidence of HIV infection should be selected.

Blood Donors↗

PubMed1992

[Factors changing the length of analgesia in spinal anesthesia].

So as to determine the effects of some factors on the duration of bupivacaine spinal anaesthesia, a prospective controlled study was carried out on 152 ASA I or II patients. They were randomly allocated to six groups. The patients of group I were given 4 ml of 0.5% bupivacaine at 27 degrees C. The patients of group II were given 4 ml of a mixture including 3 ml of 0.5% bupivacaine, 1 ml fentanyl in 1 ml of 10% dextrose solution. The group III was given 4 ml of a mixture including 3 ml of 0.5% bupivacaine, 0.20 mg adrenaline. The group IV was given 4 ml of a mixture including 3 ml of 0.5% bupivacaine, 0.15 mg clonidine. The patients of group V were given 4 ml of 0.5% bupivacaine at 20 degrees C and those of group VI were given 4 ml of 0.5% bupivacaine at 5 degrees C. There is significant difference between regression times of sensory analgesia of group II and group I, group IV and group III, group VI and group V. The choice of product to lengthen analgesia in spinal anaesthesia depends on the use of each anaesthesist, the characteristic of patients and the duration of surgery.

Adolescent↗

PubMed1992

[The effect of the local anesthetic temperature on spinal anesthesia using 0.5% bupivacaine].

The aim of this study was to compare spinal anaesthesia with 0.5% bupivacaine at 20 degrees C and 5 degrees C. One hundred two patients ASA I-II were randomized into two groups. After atropine and IV fluid administration, patients of group I received intrathecally at L3-L4 level 0.02 ml.cm-1 of plain 0.5% bupivacaine at 20 degrees C, while patients of group II received the same solution and the same doses but at 5 degrees C. No significant difference was found between the times for installation of sensory and motor blocks nor between the durations of motor block in the two groups. On the other hand significant differences were found between the durations of sensory block in group I (283.33 min +/- 9.40 min) and group II (314.35 +/- 8.80 min) (P < 0.001) and all the more (P < 10(-9)) between the cephalad block extensions in group I (D 7.45 +/- 0.14) and group II (D 4.82 +/- 0.20). Therefore plain bupivacaine 0.5%, isobaric at 20 degrees C, seems to get the properties of an hyperbaric solution when cooled at 5 degrees C.

Anesthesia, Spinal↗

PubMed1990

[Comparison of adrenaline and clonidine to extend the analgesic effect of bupivacaine without glucose in spinal anesthesia].

So as to determine the effects of adrenaline and clonidine on the duration of isobaric bupivacaine spinal anaesthesia, a prospective controlled study was carried out on 20 ASA I or II patients. They were randomly allocated to two groups. The patients of group I were given 4 ml of a mixture including 3 ml of 0.5% bupivacaine, 0.2 mg adrenaline. The patients of group II were given 4 ml of a mixture including 3 ml of 0.5% bupivacaine, 0.15 mg clonidine. The segmental level of sensory loss was tested using forceps. The time course required for maximal spread on the sensory blockade did not differ in the two groups: 4.00 +/- 1.01 min. for group I and 3.60 +/- 0.90 min. for group II. No difference was observed between median highest levels of sensory analgesia. Regression times were 520.70 +/- 79.52 min for group II and 360.40 +/- 51.47 min. for group I. Significant prolongation of motor block was also associated with the addition of vasoconstrictors. It is concluded that addition of 0.15 mg clonidine may be useful to increase duration of isobaric bupivacaine spinal anaesthesia.

Adult↗

PubMed1989