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Le Moing V, Chêne G, Carrieri MP, Besnier JM, Masquelier B, Salamon R, Bazin C, Moatti JP, Raffi F, Leport C. Clinical, biologic, and behavioral predictors of early immunologic and virologic response in HIV-infected patients initiating protease inhibitors. J Acquir Immune Defic Syndr 2001; 27:372-6. [PMID: 11468425 DOI: 10.1097/00126334-200108010-00007] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Predictors of virologic (plasma HIV RNA viral load [VL] < 500 copies/ml) and immunologic (rise in CD4+ cell count > 50 cells/mm3) response after 4 months of therapy (M4) were studied in 750 HIV-1-infected patients prospectively enrolled at the initiation of a protease inhibitor (PI)-containing regimen. A virologic response was observed in 80% of patients, and an immunologic response was observed in 64%. Sixty-two percent of patients self-reported full adherence to therapy at 1 month of therapy (M1) and M4. In multivariate analysis, a virologic response was more frequent in fully adherent patients (odds ratio [OR] = 2.0; p =.001). An immunologic response was associated with age < 36 years (OR =1.4; p =.03), baseline VL (OR = 1.5 per 1 log10 copies/ml higher; p <.01), decrease in VL at M1 (OR = 1.5 per 1 log10 copies/ml decrease; p <.01), baseline total lymphocyte count (OR = 1.7 per 50% lower; p <.001), and baseline CD4+ cell percentage > or = 20% (OR =1.9; p <.001) but not with adherence to therapy. Full adherence seems to be a major predictor of a virologic response to PI-containing triple therapy. An immunologic response may be possible despite incomplete adherence, at least early in therapy.
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Parienti JJ, Verdon R, Bazin C. Once-daily regimen may increase drug holidays. J Infect Dis 2001; 183:1539-40. [PMID: 11319693 DOI: 10.1086/320203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Leclerc JC, Cannard L, Lefèvre F, Debelle L, Béot S, Boccaccini H, Bazin C, Régent D. [Imaging of the intrahepatic biliary tree with thick slice MR cholangiography]. JOURNAL DE RADIOLOGIE 2001; 82:151-60. [PMID: 11428210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
PURPOSE To assess the value of single shot fast spin echo MR sequence (SS-FSE) in the evaluation of the normal and pathologic intrahepatic biliary tree. MATERIAL AND METHODS 418 consecutive patients (457 examinations) referred for clinical and/or biological suspicion of biliary obstruction underwent MR cholangiopancreatography (MRCP). All patients were imaged with a Signa 1.5 T GE MR unit, with High Gradient Field Strength and Torso Phased Array Coil. Biliary ducts were imaged with SS-FSE sequence, coronal and oblique coronal 20 mm thick slices on a 256 x 256 matrix. Total acquisition time was 1 second. Source images were reviewed by two radiologists blinded to clinical information. In case of disagreement, a third radiologist's opinion was requested. In all cases, MRCP results were compared with direct biliary tract evaluation, other imaging studies and clinical and biological follow-up. RESULTS In all cases, MRCP produced high quality images. Numerous branch of division were observed although the peripheral intrahepatic ducts were well seen in more than 90% in an area 2 cm below the capsule. The number of division was statistically higher when mechanical obstruction was present. Intrahepatic calculi or peripheral cholangiocarcinoma were well detect by MRCP. For the detection of cholangitis, MRCP sensitivity was 87.5% but the positive predictive value was only 57.7% because of a high number of false positive. The diagnosis of primary sclerosing cholangitis must be made only on strict criteria and slightly dilated peripheral bile ducts unconnected to the central ducts in several hepatic segments were a characteristic MR sign of primary sclerosing cholangitis. CONCLUSION MRCP can be proposed as a first intention imaging technique for the evaluation of intrahepatic ducts.
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Parienti JJ, Verdon R, Bazin C, Bouvet E, Massari V, Larouzé B. The pills identification test: a tool to assess adherence to antiretroviral therapy. JAMA 2001; 285:412. [PMID: 11242424 DOI: 10.1001/jama.285.4.412] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Lerat E, Brunet F, Bazin C, Capy P. Is the evolution of transposable elements modular? Genetica 2000; 107:15-25. [PMID: 10952194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The evolution of transposable element structures can be analyzed in populations and species and by comparing the functional domains in the main classes of elements. We begin with a synthesis of what we know about the evolution of the mariner elements in the Drosophilidae family in terms of populations and species. We suggest that internal deletion does not occur at random, but appears to frequently occur between short internal repeats. We compared the functional domains of the DNA and/or amino acid sequences to detect similarities between the main classes of elements. This included the gag, reverse transcriptase, and envelope genes of retrotransposons and retroviruses, and the integrases of retrotransposons and retroviruses, and transposases of class II elements. We find that each domain can have its own evolutionary history. Thus, the evolution of transposable elements can be seen to be modular.
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Bazin C, Lecaille C, Lestrade E, Rech G, Colpaert MH. [Methods of administration: intravenous immunoglobulins]. REVUE DE L'INFIRMIERE 2000:37-9. [PMID: 11288430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
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Capy P, Gasperi G, Biémont C, Bazin C. Stress and transposable elements: co-evolution or useful parasites? Heredity (Edinb) 2000; 85 ( Pt 2):101-6. [PMID: 11012710 DOI: 10.1046/j.1365-2540.2000.00751.x] [Citation(s) in RCA: 282] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The activity of transposable elements can be induced by environmental and population factors and in particular by stresses in various organisms. A consequence of the increase in transposable element mobility is the creation of new genetic variability that can be useful in the face of stressful conditions. In this review, results supporting this hypothesis are presented and discussed. The main question is how stress induces the activity of transposable elements. We discuss hypotheses based upon the existence of promoters or fixation sites of transcription activators in the untranslated regions of transposable elements, similar to those found in regulatory regions of host defence genes.
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Bonnivard E, Bazin C, Denis B, Higuet D. A scenario for the hobo transposable element invasion, deduced from the structure of natural populations of Drosophila melanogaster using tandem TPE repeats. Genet Res (Camb) 2000; 75:13-23. [PMID: 10740917 DOI: 10.1017/s001667239900395x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Temporal surveys of hobo transposable elements in natural populations reveal a historical pattern suggesting a recent world-wide invasion of D. melanogaster by these transposons, perhaps following a recent horizontal transfer. To clarify the dynamics of hobo elements in natural populations, and thus to provide further data for our understanding of the hobo invasion, TPE tandem repeats, observed in the polymorphic S region of the element, were used as molecular markers. The number of TPE repeats was studied in 101 current populations from around the world, and in 63 strains collected in the past. This revealed a geographical distribution which seems to have been stable since the beginning of the 1960s. This distribution is compatible with a number of hypotheses for the dynamics of hobo elements. We propose a scenario based on an invasion in two stages: first, a complete invasion by elements with three TPE repeats, followed by the beginning of a new invasion involving hobo elements with five or seven repeats.
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Bazin C, Maisonhaute C, Capy P. Evolution de la taille des génomes : extension et/ou contraction ? Med Sci (Paris) 2000. [DOI: 10.4267/10608/1734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Brunet F, Godin F, Bazin C, Capy P. Phylogenetic analysis of Mos1-like transposable elements in the Drosophilidae. J Mol Evol 1999; 49:760-8. [PMID: 10594177 DOI: 10.1007/pl00006598] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We have performed a phylogenetic analysis of 59 mariner elements in 14 Drosophilidae species that are related to the active Drosophila mauritiana Mos1 element. This includes 38 previously described sequences and 21 new sequences amplified by PCR from 10 species. Most of the elements detected are nonfunctional due to several frameshifts and deletions. They have been subdivided into four groups according to specific signatures in the nucleotidic and amino acid sequences. The mean nucleotide diversity is 4.8 +/- 0.1% and reflects mainly the divergence of inactive elements over different periods. Although this probably gives rise to occasional homoplasies between distantly related taxa, the elements of each species remain grouped together. Horizontal transfer, reported previously between D. mauritiana and Zaprionus tuberculatus, can be extended to Z. verruca, while the Mos1-like element of Z. indianus belongs to another group. Interpretation of the phylogeny leads to a comparison of the influence of common ancestral sequences and putative horizontal transfers.
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Michelet C, Bellissant E, Ruffault A, Arvieux C, Delfraissy JF, Raffi F, Bazin C, Renard I, Sébille V, Chauvin JP, Dohin E, Cartier F. Safety and efficacy of ritonavir and saquinavir in combination with zidovudine and lamivudine. Clin Pharmacol Ther 1999; 65:661-71. [PMID: 10391672 DOI: 10.1016/s0009-9236(99)90088-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Ritonavir is a potent inhibitor of cytochrome P4503A4 that strongly increases saquinavir bioavailability. In this study we assessed the safety and antiretroviral efficacy of the combination of these two compounds in patients pretreated and receiving continued treatment with zidovudine and lamivudine who were protease inhibitor naive and who had a CD4 cell counts below 200/mm3. METHODS In this 48-week pilot study, all patients received 600 mg ritonavir and 400 mg saquinavir twice daily. Administration of zidovudine and lamivudine was continued without a change in previous doses. Viral load, CD4 cell count, and the emergence of resistance to the two protease inhibitors were evaluated repeatedly up to week 48. RESULTS Sixteen patients were included in the study. Previous nucleoside analog treatment duration was 48+/-22 months (mean +/- SD). Two patients quit taking both protease inhibitors within 2 weeks. The ritonavir dose had to be reduced in 10 other patients because of side effects. Between inclusion and week 48, plasma viremia varied from 4.87+/-0.43 to 3.00+/-1.29 log10 copies/mL and CD4 cell counts ranged from 98+/-61 to 250+/-139/mm3. Ten patients (63%) had viral loads below 200 copies/mL and 7 (44%) had viral loads below 50 copies/mL. A single key mutation that conferred ritonavir resistance I84V and V82A/V developed in two patients. A mutation at codon 54 developed in another patient. These mutations were associated with repeated cessations of antiretroviral treatment. No lipodystrophy was observed. CONCLUSION Ritonavir and saquinavir in combination are quite well tolerated and induce a high and sustained antiretroviral efficacy. A four-drug combination that includes these two protease inhibitors should be considered as a first line of treatment in patients with low CD4 cell counts.
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Lefèvre F, Béot S, Chapuis F, Deneuville M, Gaucher H, Debelle L, Boccaccini H, Bazin C, Régent D. [Computed tomography study of the sigmoid colon: discriminating diagnostic criteria and interobserver correlations]. JOURNAL DE RADIOLOGIE 1999; 80:447-56. [PMID: 10372323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
PURPOSE To assess the value of pericolonic findings at CT in the evaluation of the sigmoid colon. MATERIALS AND METHODS A total of 210 CT examinations were retrospectively reviewed by 3 blinded radiologists. Data was analyzed to determine the interobserver correlation and the value of pericolonic and colonic wall findings in diagnosis of sigmoid colon pathology. RESULTS The interobserver correlation for pericolonic findings was equal to or superior to that for colonic wall findings. The presence of abnormal pericolonic fat was the most sensitive (88%) and specific (93%) sign to differentiate a diseased sigmoid colon from a normal one or from sigmoid diverticulosis. Wall-thickening was less sensitive (82%) and specific (76%). Findings suggesting malignancy over diverticulitis included acute zone of transition, focal fatty infiltration, and lymph nodes. Symmetrical and circumferential wall thickening, target-like enhancement, and local fatty proliferation were findings suggesting colitis over diverticulitis. Wall thickening more than 15 mm, involvement of 15 cm or less, asymmetrical involvement, acute zone of transition, and homogeneous or heterogeneous enhancement were findings suggesting malignancy over colitis. CONCLUSION To render a diagnosis, the evaluation of the fat infiltration must prevail on the parietal thickening appreciation.
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Lefèvre F, Gaucher H, Debelle L, Béot S, Boccaccini H, Bazin C, Régent D. [Angio-MRI of the lower limbs using the moving-bolus technic without subtraction: technical note]. JOURNAL DE RADIOLOGIE 1999; 80:397-400. [PMID: 10337582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Bazin C, Denis B, Capy P, Bonnivard E, Higuet D. Characterization of permissivity for hobo-mediated gonadal dysgenesis in Drosophila melanogaster. MOLECULAR & GENERAL GENETICS : MGG 1999; 261:480-6. [PMID: 10323228 DOI: 10.1007/s004380050991] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The hobo transposon is responsible for one of the three hybrid dysgenic systems that have been described in Drosophila melanogaster. Most studies on the hobo dysgenic system have been carried out using the PM system as a reference. However, these two systems differ significantly. In particular, several studies have failed to find any correlation between the molecular structures of hobo elements, the instability of the transposon and the incidence of gonadal dysgenic (GD) sterility. On the other hand, no study of the ability of females to permit hobo activity in their progeny when they are crossed with males harboring active hobo elements (permissivity) has yet been reported. In order to investigate the parameters involved in hobo permissivity, four E strains were studied with regard to the molecular nature of their hobo sequences and the GD sterility induced by a controlled source of hobo transposase. We show that hobo permissivity varies both within and between E strains. Moreover, permissivity decreases with age in E females. Our results are discussed with respect to similar phenomena that have been described in relation to the reactivity of the IR dysgenic system.
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Vergnaud M, Dauga C, Dompmartin A, Malbruny B, Bazin C, Grimont PA. Genital infection due to Mycobacterium genavense in a patient with AIDS. Clin Infect Dis 1998; 27:1531. [PMID: 9868674 DOI: 10.1086/515046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Barbier C, Denny P, Pradoura JM, Bui P, Rieger A, Bazin C, Tortuyaux JM, Régent D. [Radiologic aspects of infarction of the appendix epiploica]. JOURNAL DE RADIOLOGIE 1998; 79:1479-85. [PMID: 9921450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Clinical, US, CT and MR findings were reviewed in 5 patients with primary epiploic appendagitis (3 men, 2 women, mean age 38 years, age range 29-62 years) seen between December 1994 and December 1997. Diagnosis was reached in all cases with CT, with US in 3 and with MR in 1. Follow-up CT was performed in 2 cases and clinical follow-up in 4. One patient underwent surgery. Initial US, CT or MR examinations revealed a fatty oval-shaped nodule located anteriorly or anterolaterally to the left colon. The greater diameter ranged from 20 to 30 mm. Perinodular lesions with strands of periappendicular fat and thickened parietal peritoneum were visualized in all cases without any other inflammatory process in the abdomen. Symptoms resolved within 4 days in all patients. Signs of fatty inflammatory processes resolved in the 2 patients who had follow-up CTs. Primary epiploic appendagitis has characteristic US, CT and MR features which help guide medical treatment.
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Barbier C, Pradoura JM, Tortuyaux JM, Denny P, Béot S, Bazin C, Régent D. [Diagnostic imaging of idiopathic segmental infarct of the greater omentum. Diagnostic and physiopathologic considerations]. JOURNAL DE RADIOLOGIE 1998; 79:1367-72. [PMID: 9846289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Primary infarction of the greater omentum is a rare cause of acute abdominal syndrome. Rate of occurrence may nevertheless be underestimated. We report a series of six cases observed over a 30-month period with US and CT imaging. We assessed early signs and their course. CT-scans depicted fatty oval-shaped masses below the right anterior or anterolateral parietal wall, associated with a thickening of the anterior parietal peritoneum, explaining symptom pathogenesis. Torsion can be identified, but has no specific impact on prognosis. Follow-up CT scan may evidence spontaneous, but sometimes slow, resolution.
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Lefèvre F, Crouzet P, Gaucher H, Chapuis F, Béot S, Boccaccini H, Bazin C, Régent D. [Single shot fast spin echo sequence MRI cholangiopancreatography]. JOURNAL DE RADIOLOGIE 1998; 79:415-25. [PMID: 9757270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE To assess the value of single shot fast spin echo MR sequence (SS-FSE) in the morphological analysis of the biliary tree and pancreatic ducts and to compare its accuracy with other imaging methods. MATERIAL AND METHODS 95 consecutive patients referred for clinical and/or biological suspicion of biliary obstruction were explored with MR cholangiopancreatography (MRCP). All patients were explored with a Signa 1.5 T GE MR unit, with High Gradient Field Strength and Torso Phased Array Coil. Biliary ducts were explored with SS-FSE sequence, coronal and oblique coronal 20 mm thick slices on a 256 x 256 matrix. Total acquisition time was 1 second. Native pictures were reviewed by two radiologists blinded to clinical information. In case of disagreement, a third radiologist's judgement was requested. In 88 cases, MRCP results were compared with direct biligraphy methods. RESULTS In all cases, MRCP produced high quality images without MIP or other post-processing methods. For detection of biliary tree distensions, the concordance value of MRCP was over 91% (Kappa 0.82). For detection of biliary tree and/or pancreatic duct obstruction, MR sensitivity was 100% and specificity 91%. The overall diagnostic concordance value of MRCP was > or = 93%. Difficulties in MRCP were caused by functional diseases or benign stenosis. MRCP accurately diagnosed all lithiasic obstructions starting from a stone size of 3 mm. CONCLUSION MRCP produces fastly high-quality images. As it is totally safe, it can be proposed as a first intention method in biliopancreatic duct explorations.
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Grasland A, Le Maître F, Pouchot J, Hazera P, Bazin C, Vinceneux P. [Adult-onset Still's disease after hepatitis A and B vaccination?]. Rev Med Interne 1998; 19:134-6. [PMID: 9775130 DOI: 10.1016/s0248-8663(97)83425-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND Hepatitis A and B vaccination are generally very well tolerated. However, exceptional cases of arthritis and systemic diseases have been reported after hepatitis B vaccination. CASE REPORT The authors report a case of adult Still's disease apparently triggered by hepatitis A and B vaccination. The patient was a 38-year-old woman who presented with fever, hepatitis, pneumonitis and neurologic symptoms, compatible with the diagnosis of adult Still's disease. DISCUSSION The authors discuss the rarity of systemic diseases triggered by such vaccination, the link between hepatitis B virus and some vasculitis, and the possibility for viral bacterial infections to trigger adult Still's disease.
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Jaeck D, Bronowicki JP, Boudejma K, Bachellier P, Chone L, Nisand G, Bazin C, Pflumio F, Uhl G, Wenger JJ, Boissel P, Bigard MA, Gaucher P, Vetter D, Wolf P, Doffoel M. Comparison of resection, liver transplantation and transcatheter oily chemoembolisation in the treatment of hepatocellular carcinoma. WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 1998; 50 Suppl 1 Pt 1:413-5. [PMID: 9383352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Capy P, Langin T, Higuet D, Maurer P, Bazin C. Do the integrases of LTR-retrotransposons and class II element transposases have a common ancestor? Genetica 1998; 100:63-72. [PMID: 9440259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The integrases of retrotransposons (class I) and retroviruses and the transposases of bacterial type elements (class II) were compared. The DDE signature that is crucial for the integration of these elements is present in most of them, except for the non-LTR retrotransposons and members of the hAT and P super-families. Alignment of this region was used to infer the relationships between class II elements, retrotransposons, and retroviruses. The mariner-Tc1 and the Pogo-Fot1 super-families were found to be closely related and probably monophyletic, as were LTR retrotransposons and retroviruses. The IS elements of bacteria were clustered in several families, some of them being closely related to the transposase of the mariner-Tc1 super-family or to the LTR retrotransposon and retrovirus integrases. These results plus that of Xiong and Eickbush (1990) were used to develop an evolutionary history suggesting a common ancestral origin(s) for the integrases and transposases containing the DDE signature. The position of the telomeric elements (Het-A and TART) was assessed by comparing their gag and reverse transcriptase domains (when present) to those of group II introns and non-LTR retrotransposons. This preliminary analysis suggests that telomeric elements may be derived from non-LTR retrotransposons.
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Reynes J, Bazin C, Ajana F, Datry A, Le Moing JP, Chwetzoff E, Levron JC. Pharmacokinetics of itraconazole (oral solution) in two groups of human immunodeficiency virus-infected adults with oral candidiasis. Antimicrob Agents Chemother 1997; 41:2554-8. [PMID: 9371367 PMCID: PMC164162 DOI: 10.1128/aac.41.11.2554] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The pharmacokinetics of itraconazole formulated in a hydroxypropyl-beta-cyclodextrin oral solution was determined for two groups of human immunodeficiency virus (HIV)-infected adults with oral candidiasis (group A, 12 patients with CD4+ T-cell count of >200/mm3 and no AIDS, and group B, 11 patients with CD4+ T-cell count of <100/mm3 and AIDS). Patients received 100 mg of itraconazole every 12 h for 14 days. Concentrations of itraconazole and hydroxyitraconazole, the main active metabolite, were measured in plasma and saliva by high-performance liquid chromatography. Pharmacokinetic parameters determined at days 1 and 14 (the area under the concentration-time curve from 0 to 10 h, the maximum concentration of drug in plasma [Cmax], and the time to Cmax) were comparable in both groups. Trough levels in plasma (Cmin) were similar in both groups for the complete duration of the study. An effective concentration of itraconazole in plasma (>250 ng/ml) was reached at day 4. At day 14, Cmin values of itraconazole were 643 +/- 304 and 592 +/- 401 ng/ml for groups A and B, respectively, and Cmin values of hydroxyitraconazole were 1,411 +/- 594 and 1,389 +/- 804 ng/ml for groups A and B, respectively. In saliva, only unchanged itraconazole was detected, and mean concentrations were still high (>250 ng/ml) 4 h after the intake, which may contribute to the fast clinical response. In conclusion, the oral solution of itraconazole generates effective levels in plasma and saliva in HIV-infected patients; its relative bioavailability is not modified by the stage of HIV infection.
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Bonnivard E, Higuet D, Bazin C. Characterization of natural populations of Drosophila melanogaster with regard to the hobo system: a new hypothesis on the invasion. Genet Res (Camb) 1997; 69:197-208. [PMID: 9290322 DOI: 10.1017/s0016672397002826] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Until now, with regard to the hobo system of hybrid dysgenesis, natural populations of Drosophila melanogaster have been investigated using only two criteria: at the molecular level, the presence or absence of XhoI fragments 2.6 kb long or smaller; and/or at the genetic level, the ability to induce gonadal dysgenesis sterility in crosses A (females of an E reference strain crossed with males under test) and A* (females under test crossed with males of an H reference strain). Recently, analyses of laboratory strains using these criteria as well as the mobilization of two reporter genes, the male recombination and the number of 'TPE' repeats in the S region, revealed a lack of correlation between the different dysgenic parameters themselves, and also between these parameters and the molecular characteristics of the strains. Thirteen current strains derived from world populations were therefore investigated with regard to all these dysgenic traits, to determine discriminating criteria providing a robust method of classifying natural populations and deducing the dynamics of hobo elements in these populations. We show, as in laboratory strains, a lack of correlation between the parameters studied. Therefore, the significance of each of them as well as the nature of hobo hybrid dysgenesis are discussed, to propose an analysis method of the hobo system applicable to natural populations. According to the geographical distribution of hobo activities in world populations and to the variable polymorphism of the number of 'TPE' repeats, we propose a new scenario for the invasion of D. melanogaster by hobo elements.
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Saadate-Arab M, Troufléau P, Depardieu C, Bazin C, Netter E, Stinès J, Régent D. [Mesenteric panniculitis. Aspects in x-ray computed tomography and MRI]. JOURNAL DE RADIOLOGIE 1997; 78:305-8. [PMID: 9239367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We report one case of mesenteric panniculitis. This rare and poorly-known disease is characterized by a non specific inflammatory process involving adipose tissue of the mesentery. The new imaging techniques (CT and MRI) may be helpful for the diagnosis of this disease and allow avoiding laparotomy. However histological proof remains necessary and can be given by guided needle biopsy.
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