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1. Dried blood spots for the quantitative evaluation of IgG isotypes and correlation with serum samples in HIV-exposed uninfected (HEU) infants.

Author

Baroncelli S, Galluzzo CM, Liotta G, Andreotti M, Jere H, Luhanga R, Sagno JB, Ciccacci F, Orlando S, Amici R, Marazzi MC, and Giuliano M

Subjects
Female, Humans, Immunoglobulin Isotypes immunology, Infant, Pregnancy, Reproducibility of Results, Dried Blood Spot Testing, HIV immunology, Immunoglobulin Isotypes blood
Abstract

Background: The determination of IgG levels and their subclasses can provide clinically relevant information on the status of the immune system. Here we determined the sensitivity and reproducibility of the quantification of IgG subclasses from Dried Blood Spots (DBS) in Malawian uninfected infants exposed to HIV (HEU)., Methods: Sixty paired samples of serum and DBS from HEU infants were used. Samples were collected from 1, 6, and 24-month old infants. IgGs concentrations from both serum and DBS were analyzed by BN ProSpec Siemens assay, using a different setting for sample dilutions. The reproducibility of the DBS method was tested on 10 samples run twice, starting from the DBS extraction process. To assess the systematic, proportional, and random differences, we computed the Passing-Bablok regression, and the Bland-Altman analysis to estimate the total mean bias between the two tests., Results: The IgG isotypes concentrations from serum and DBS showed significant differences in all the comparisons. Generally, the DBS method underestimated IgG subclasses' values showing a recovery range between 51.2% and 77.6%. Passing Bablok regression on age-based groups showed agreement for IgG, IgG1, and IgG2, but not for IgG3 and IgG4. The mean bias obtained with the Bland Altman test varied largely depending on IgG isotypes (-0.02-2.21 g/l) Coefficient of variation <7.0% was found in the repeated tests for IgG, IgG1, IgG3, and IgG4, while it was 12.4% for IgG2., Conclusions: Varying degrees of differences were seen in the IgGs measurement in the two different matrices. In IgGs analysis, the DBS method offers promise for population-based research, but the results should be carefully evaluated and considered as a relative value since they are not equivalent to the serum concentrations., (Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved.)

Published
2021
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2. Drug resistance mutations 18 months after discontinuation of nevirapine-based ART for prevention of mother-to-child transmission of HIV in Malawi.

Author

Palombi L, Galluzzo CM, Andreotti M, Liotta G, Jere H, Sagno JB, Luhanga R, Mancinelli S, Amici R, Marazzi MC, Vella S, and Giuliano M

Subjects
Adult, Antiretroviral Therapy, Highly Active, CD4 Lymphocyte Count, Female, HIV Infections transmission, Humans, Malawi, Pregnancy, Reverse Transcriptase Inhibitors pharmacology, Reverse Transcriptase Inhibitors therapeutic use, Time Factors, Viral Load, Young Adult, Drug Resistance, Viral, HIV drug effects, HIV genetics, HIV Infections drug therapy, HIV Infections virology, Infectious Disease Transmission, Vertical prevention & control, Mutation, Nevirapine pharmacology, Nevirapine therapeutic use
Abstract

Objectives: The objective of this study was to determine the prevalence of drug resistance mutations among HIV-positive women in Malawi 18 months after discontinuing nevirapine-based ART for the prevention of mother-to-child transmission., Patients and Methods: HIV-infected antiretroviral-naive (except for single-dose nevirapine) pregnant Malawian women receiving a nevirapine-based triple antiretroviral regimen from Week 25 of gestation until 6 months of breastfeeding were included in this analysis. Drug resistance was assessed in HIV-DNA 24 months post-partum and at baseline (before the initiation of treatment). In patients with resistance, the presence of mutations was also evaluated in the corresponding plasma samples., Results: Seven out of 42 (16.7%) women studied had archived drug resistance at Month 24 [six cases had NNRTI-associated mutations and two cases the M184I mutation]. In four cases, resistance mutations were already present at baseline (all NNRTI mutations). In three cases, there was an emergence of 'new' resistance (also present in the plasma in one case). Of the 35 women without resistance mutations at Month 24, only one subject had resistance mutations at baseline. Baseline resistance was significantly more common among women with mutations at 24 months compared with those harbouring a WT virus (4/7 versus 1/35, P < 0.001)., Conclusions: Among women who had discontinued drugs 6 months post-partum, only 3/42 (7.1%) had accumulated new resistance mutations in HIV-DNA 2 years after delivery. These findings are reassuring in terms of the safety of the Option B strategy for the prevention of HIV mother-to-child transmission., (© The Author 2015. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)

Published
2015
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3. Viro-immunological response and emergence of resistance in HIV-infected women receiving combination antiretroviral regimens for the prevention of mother-to-child transmission in Malawi.

Author

Palombi L, Galluzzo CM, Pirillo MF, Liotta G, Andreotti M, Jere H, Sagno JB, Luhanga R, Mancinelli S, Ceffa S, Amici R, Marazzi MC, Vella S, and Giuliano M

Subjects
Adult, Anti-Retroviral Agents pharmacology, Cohort Studies, Female, HIV isolation & purification, HIV Infections immunology, HIV Infections prevention & control, Humans, Malawi, Pregnancy, RNA, Viral blood, Viral Load, Young Adult, Anti-Retroviral Agents therapeutic use, Drug Resistance, Viral, HIV drug effects, HIV Infections drug therapy, HIV Infections virology, Infectious Disease Transmission, Vertical prevention & control, Pregnancy Complications drug therapy
Abstract

Objectives: To identify factors associated with detectable viral load and the emergence of drug resistance in a cohort of HIV-infected pregnant women in Malawi receiving antiretroviral combination regimens for the prevention of mother-to-infant transmission., Methods: The study included 260 treatment-naive women who had received a three-drug nevirapine-based regimen from week 25 of gestational age until 6 months after delivery. HIV RNA was determined at month 6 and drug resistance was assessed if viral load was >50 copies/mL. Attendance at the scheduled follow-up visits was used as an indirect measure of treatment adherence., Results: The rate of detectable HIV RNA at 6 months was 9.6% (25/260). The only significant predictor of this occurrence was the presence of ≥1 missed visit during follow-up (P = 0.012). Resistance was assessed in 19 of these women: 7 (37%) had a wild-type virus and the other 12 (63%) had resistance-associated mutations (nucleoside reverse transcriptase inhibitor, 7/12; non-nucleoside reverse transcriptase inhibitor, 11/12). Three of 12 cases (25%) in which mutations were detected had a viral load <1000 copies/mL. The emergence of resistance was not correlated with the presence of baseline mutations in either plasma or archived DNA., Conclusions: In this cohort of women, detectable HIV RNA 6 months post-partum was infrequent and associated with low adherence to the treatment programme. Mutations were present in 63% of the women with detectable viral load at 6 months who had samples available for resistance testing. The impact of resistance on treatment re-initiation in women discontinuing drugs after the risk of transmission has ceased can be limited.

Published
2014
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4. Amniocentesis and chorionic villus sampling in HIV-infected pregnant women: a multicentre case series

Author

Floridia M, Masuelli G, Meloni A, Cetin I, Tamburrini E, Cavaliere AF, Dalzero S, Sansone M, Alberico S, Guerra B, Spinillo A, Chiadò Fiorio Tin M, Ravizza M, Mori F, Ortolani P, Dalle Nogare ER, Di Lorenzo F, Sterrantino G, Meli M, Polemi S, Nocentini J, Baldini M, Montorzi G, Mazzetti M, Rogasi P, Borchi B, Vichi F, Del Pin B, Pinter E, Anzalone E, Marocco R, Mastroianni C, Mercurio VS, Carocci A, Grilli E, Maccabruni A, Zaramella M, Mariani B, Natalini Raponi G, Guaraldi G, Nardini G, Stentarelli C, Beghetto B, Degli Antoni AM, Molinari A, Crisalli MP, Donisi A, Piepoli M, Cerri V, Zuccotti G, Giacomet V, Coletto S, Di Nello F, Madia C, Placido G, Vivarelli A, Castelli P, Savalli F, Portelli V, Sabbatini F, Francisci D, Bernini L, Grossi P, Rizzi L, Maso G, Airoud M, Soppelsa G, Dedoni M, Cuboni C, Ortu F, Piano P, Citernesi A, Bordoni Vicini I, Luzi K, Roccio M, Vimercati A, Miccolis A, De Gennaro A, Cervi F, Simonazzi G, Margarito E, Capretti MG, Marsico C, Faldella G, Martinelli P, Agangi A, Capone A, Maruotti GM, Tibaldi C, Trentini L, Todros T, Frisina V, Brambilla T, Savasi V, Personeni C, Giaquinto C, Fiscon M, Rubino E, Bucceri A, Matrone R, Scaravelli G, Genovese O, Cafforio C, Pinnetti C, Liuzzi G, Tozzi V, Massetti P, Casadei AM, Cellini M, Castelli Gattinara G, Marconi AM, Sacchi V, Ierardi M, Polizzi C, Mattei A, Pirillo MF, Amici R, Galluzzo CM, Donnini S, Baroncelli S, Villani P, Cusato M, Cerioli A, De Martino M, Mastroiacovo P, Parazzini F, Vella S., Floridia M, Masuelli G, Meloni A, Cetin I, Tamburrini E, Cavaliere AF, Dalzero S, Sansone M, Alberico S, Guerra B, Spinillo A, Chiadò Fiorio Tin M, Ravizza M, and Mori F, Ortolani P, Dalle Nogare ER, Di Lorenzo F, Sterrantino G, Meli M, Polemi S, Nocentini J, Baldini M, Montorzi G, Mazzetti M, Rogasi P, Borchi B, Vichi F, Del Pin B, Pinter E, Anzalone E, Marocco R, Mastroianni C, Mercurio VS, Carocci A, Grilli E, Maccabruni A, Zaramella M, Mariani B, Natalini Raponi G, Guaraldi G, Nardini G, Stentarelli C, Beghetto B, Degli Antoni AM, Molinari A, Crisalli MP, Donisi A, Piepoli M, Cerri V, Zuccotti G, Giacomet V, Coletto S, Di Nello F, Madia C, Placido G, Vivarelli A, Castelli P, Savalli F, Portelli V, Sabbatini F, Francisci D, Bernini L, Grossi P, Rizzi L, Maso G, Airoud M, Soppelsa G, Dedoni M, Cuboni C, Ortu F, Piano P, Citernesi A, Bordoni Vicini I, Luzi K, Roccio M, Vimercati A, Miccolis A, De Gennaro A, Cervi F, Simonazzi G, Margarito E, Capretti MG, Marsico C, Faldella G, Martinelli P, Agangi A, Capone A, Maruotti GM, Tibaldi C, Trentini L, Todros T, Frisina V, Brambilla T, Savasi V, Personeni C, Giaquinto C, Fiscon M, Rubino E, Bucceri A, Matrone R, Scaravelli G, Genovese O, Cafforio C, Pinnetti C, Liuzzi G, Tozzi V, Massetti P, Casadei AM, Cellini M, Castelli Gattinara G, Marconi AM, Sacchi V, Ierardi M, Polizzi C, Mattei A, Pirillo MF, Amici R, Galluzzo CM, Donnini S, Baroncelli S, Villani P, Cusato M, Cerioli A, De Martino M, Mastroiacovo P, Parazzini F, Vella S.

Subjects
Infectious Disease Transmission, Prenatal diagnosis, HIV Infections, 0302 clinical medicine, Birth defect, Pregnancy, Odds Ratio, Vertical, Medicine, 030212 general & internal medicine, Pregnancy Complications, Infectious, education.field_of_study, Amniocentesi, 030219 obstetrics & reproductive medicine, medicine.diagnostic_test, Obstetrics, Infectious, Obstetrics and Gynecology, Amniocentesis, birth defects, chorionic villus sampling, HIV, invasive testing, mother-to child HIV transmission, pregnancy, prenatal diagnosis, Birth defects, Chorionic villus sampling, Invasive testing, Mother-to child HIV transmission, Anti-Retroviral Agents, Chorionic Villi Sampling, Female, Adult, medicine.medical_specialty, Prenatal diagnosi, Population, Settore MED/17 - MALATTIE INFETTIVE, 03 medical and health sciences, Humans, education, Fetal Death, Analysis of Variance, Chi-Square Distribution, business.industry, Infectious Disease Transmission, Vertical, Odds ratio, medicine.disease, Confidence interval, Pregnancy Complications, business, Chi-squared distribution
Abstract

Objectives To assess in pregnant women with HIV the rates of amniocentesis and chorionic villus sampling (CVS), and the outcomes associated with such procedures. Design Observational study. Data from the Italian National Program on Surveillance on Antiretroviral Treatment in Pregnancy were used. Setting University and hospital clinics. Population Pregnant women with HIV. Methods Temporal trends were analysed by analysis of variance and by the Chi-square test for trend. Quantitative variables were compared by Student's t-test and categorical data by the Chi-square test, with odds ratios and 95% confidence intervals calculated. Main outcome measures Rate of invasive testing, intrauterine death, HIV transmission. Results Between 2001 and 2015, among 2065 pregnancies in women with HIV, 113 (5.5%) had invasive tests performed. The procedures were conducted under antiretroviral treatment in 99 cases (87.6%), with a significant increase over time in the proportion of tests performed under highly active antiretroviral therapy (HAART) (100% in 2011–2015). Three intrauterine deaths were observed (2.6%), and 14 pregnancies were terminated because of fetal anomalies. Among 96 live newborns, eight had no information available on HIV status. Among the remaining 88 cases with either amniocentesis (n = 75), CVS (n = 12), or both (n = 1), two HIV transmissions occurred (2.3%). No HIV transmission occurred among the women who were on HAART at the time of invasive testing, and none after 2005. Conclusions The findings reinforce the assumption that invasive prenatal testing does not increase the risk of HIV vertical transmission among pregnant women under suppressive antiretroviral treatment. Tweetable abstract No HIV transmission occurred among women who underwent amniocentesis or CVS under effective anti-HIV regimens.

Published
2016

5. Body Mass Index and Weight Gain in Pregnant Women With HIV: A National Study in Italy

Author

Floridia, M, Ravizza, M, Masuelli, G, Dalzero, S, Pinnetti, C, Cetin, I, Meloni, A, Spinillo, A, Rubino, E, Francisci Dtamburrini, E, Mori, F, Ortolani, P, Dalle Nogare Er, Di Lorenzo, F, Sterrantino, G, Meli, M, Polemi, S, Nocentini, J, Baldini, M, Montorzi, G, Mazzetti, M, Rogasi, P, Borchi, B, Vichi, F, Pinter, E, Anzalone, E, Marocco, R, Mastroianni, C, Mercurio, Vs, Carocci, A, Grilli, E, Maccabruni, A, Zaramella, M, Mariani, B, Natalini Raponi, G, Guaraldi, G, Luzi, K, Nardini, G, Stentarelli, C, Degli Antoni Am, Molinari, A, Crisalli, Mp, Donisi, A, Piepoli, M, Cerri, V, Zuccotti, G, Giacomet, V, Fabiano, V, Placido, G, Vivarelli, A, Castelli, P, Savalli, F, Portelli, V, Sabbatini, F, Francisci, D, Bernini, L, Alberico, S, Maso, G, Tropea, M, Dedoni, M, Cuboni, C, Ortu, F, Piano, P, Citernesi, A, Vicini, I, Roccio, M, Vimercati, A, Miccolis, A, Bassi, E, Guerra, B, Cervi, F, Puccetti, C, Murano, P, Contoli, M, Capretti, Mg, Marsico, C, Faldella, G, Sansone, M, Martinelli, P, Agangi, A, Tibaldi, C, Trentini, L, Todros, T, Garetto, S, Brambilla, T, Savasi, V, Crepaldi, A, Giaquinto, C, Fiscon, M, Rinaldi, R, Bucceri, A, Matrone, R, Scaravelli, G, Fundarò, C, Genovese, O, Cafforio, C, Liuzzi, G, Tozzi, V, Massetti, P, Anceschi, M, Casadei, Am, Cavaliere, Af, Finelli, V, Cellini, M, Castelli Gattinara, G, Marconi, Am, Sacchi, V, De Pirro, A, Polizzi, C, Mattei, A, Pirillo, Mf, Amici, R, Galluzzo, Cm, Donnini, S, Baroncelli, S, Villani, P, Cusato, M, Cerioli, A, De Martino, Maurizio, Mastroiacovo, P, Moroni, M, Parazzini, F, Tamburrini, E, Vella, S, and Martinelli, P.

Subjects
HIV
Published
2013

6. ISS-NIA ITALIAN COHORT: NEW ANTI-HIV INHIBITORS IN PATIENTS EXPERIENCED TO IP, NRTI, NNRTI

Author

Bucciardini, R., Floridia, M., Weimer, Le, Fragola, V., Massella, M., Baroncelli, S., Pirillo, Mf, Galluzzo, Cm, Donnini, S., Mirra, M., Di Gregorio, M., Lucattini, S., Fucili, L., Baldelli, F., Francisci, D., Martinelli, L., Bastianelli, S., Pastore, G., Ladisa, N., Volpe, A., Vullo, V., D Ettore, G., Ceccarelli, G., Andreoni, M., Sarmati, L., Delle Rose, D., Montano, M., Tozzi, V., Libertone, R., Pucillo, L., Narciso, P., Bellagamba, R., Tommasi, C., Petrosillo, N., Cicalini, S., Sighinolfi, L., Daniela Segala, Armignacco, O., Preziosi, R., Ferrari, C., Antoni, Ad, Cavalli, A., Parruti, G., Sozio, F., Cosentino, L., Dionisio, D., Vivarelli, A., Manconi, Pe, Ortu, F., Di Martino, Ml, Chiodo, F., Biagelti, C., Borderi, M., Boni, P., Del Gobbo, R., Paggi, Am, Silvestri, C., Scalise, G., Giacometti, A., Cirioni, O., Mura, Ms, Mannazzu, M., Coinu, G., Bellissima, P., Bonfante, S., Neri, D., Guaraldi, G., and Beghetto, B.

Subjects
antiretroviral therapy, HIV, COHORT STUDY, NO
Published
2009

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