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2. CD4/CD8 ratio in pregnant women with HIV and its association with pregnancy outcome: data from a national study in Italy

Author

Floridia, M., Pinnetti, C., Masuelli, G., Spinillo, A., Savasi, V. M., Liuzzi, G., Degli Antoni, A. M., Sansone, M., Guaraldi, G., Dalzero, S., Maso, G., Francisci, D., Sterrantino, G., Ravizza, M., Tamburrini, E., Di Lorenzo, F., Meli, M., Campolmi, I., Vichi, F., Del Pin, B., Marocco, R., Mastroianni, C., Mercurio, V. S., Zanaboni, D., Nardini, G., Stentarelli, C., Beghetto, B., Molinari, A., Crisalli, M. P., Donisi, A., Ruggieri, A., Piepoli, M., Cerri, V., Zuccotti, G., Giacomet, V., Paradiso, L., Forlanini, F., Longoni, E., Placido, G., Milini, P., Savalli, F., Sabbatini, F., Papalini, C., Bernini, L., Grossi, P., Rizzi, L., Portelli, V., Bernardon, M., Bussolaro, S., Della Pieta, I., Sorz, A., Meloni, A., Chiodo, A., Dedoni, M., Ortu, F., Piano, P., Citernesi, A., Bordoni Vicini, I., Luzi, K., Roccio, M., Vimercati, A., Calabretti, D., Gigante, S., Guerra, B., Cervi, F., Simonazzi, G., Margarito, E., Capretti, M. G., Marsico, C., Faldella, G., Martinelli, P., Agangi, A., Capone, A., Maruotti, G. M., Tibaldi, C., Trentini, L., Todros, T., Frisina, V., Savasi, V., Cardellicchio, E., Giaquinto, C., Fiscon, M., Rubino, E., Franceschetti, L., Badolato, R., Forleo, M. A., Tassis, B., Ruggiero, M., Genovese, O., Cafforio, C., Casadei, A. M., Cavaliere, A. F., Cellini, M., Marconi, A. M., Ierardi, M., Simonetti, S. C., Alfieri, N., Agrati, S., Polizzi, C., Mattei, A., Pirillo, M. F., Amici, R., Galluzzo, C. M., Donnini, S., Baroncelli, S., Cerioli, A., De Martino, M., Parazzini, F., Vella, S., Floridia M., Pinnetti C., Masuelli G., Spinillo A., Savasi V.M., Liuzzi G., Degli Antoni A.M., Sansone M., Guaraldi G., Dalzero S., Maso G., Francisci D., Sterrantino G., Ravizza M., Tamburrini E., Di Lorenzo F., Meli M., Campolmi I., Vichi F., Del Pin B., Marocco R., Mastroianni C., Mercurio V.S., Zanaboni D., Nardini G., Stentarelli C., Beghetto B., Molinari A., Crisalli M.P., Donisi A., Ruggieri A., Piepoli M., Cerri V., Zuccotti G., Giacomet V., Paradiso L., Forlanini F., Longoni E., Placido G., Milini P., Savalli F., Sabbatini F., Papalini C., Bernini L., Grossi P., Rizzi L., Portelli V., Bernardon M., Bussolaro S., Della Pieta I., Sorz A., Meloni A., Chiodo A., Dedoni M., Ortu F., Piano P., Citernesi A., Bordoni Vicini I., Luzi K., Roccio M., Vimercati A., Calabretti D., Gigante S., Guerra B., Cervi F., Simonazzi G., Margarito E., Capretti M.G., Marsico C., Faldella G., Martinelli P., Agangi A., Capone A., Maruotti G.M., Tibaldi C., Trentini L., Todros T., Frisina V., Savasi V., Cardellicchio E., Giaquinto C., Fiscon M., Rubino E., Franceschetti L., Badolato R., Forleo M.A., Tassis B., Ruggiero M., Genovese O., Cafforio C., Casadei A.M., Cavaliere A.F., Cellini M., Marconi A.M., Ierardi M., Simonetti S.C., Alfieri N., Agrati S., Polizzi C., Mattei A., Pirillo M.F., Amici R., Galluzzo C.M., Donnini S., Baroncelli S., Cerioli A., De Martino M., Parazzini F., and Vella S.

Subjects
0301 basic medicine, Microbiology (medical), medicine.medical_specialty, Multivariate analysis, 030106 microbiology, CD4-CD8 Ratio, Human immunodeficiency virus (HIV), HIV Infections, CD8-Positive T-Lymphocytes, medicine.disease_cause, 03 medical and health sciences, 0302 clinical medicine, CD4/CD8 ratio, Pregnancy, CD4, CD8, HIV suppression, Preterm delivery, Female, Humans, Infant, Newborn, Pregnancy Outcome, Pregnant Women, Viral Load, Pregnancy Complications, Infectious, medicine, 030212 general & internal medicine, business.industry, Obstetrics, Infectious, Infant, General Medicine, Newborn, medicine.disease, Pregnancy Complications, Infectious Diseases, Increased risk, National study, Outcome data, business
Abstract

Purpose: To evaluate associations between CD4/CD8 ratio and pregnancy outcomes in women with HIV. Methods: We evaluated, in a national study of pregnant women with HIV receiving antiretroviral treatment (ART), values of CD4/CD8 ratio at entry in pregnancy, changes between first and third trimester, and possible associations with preterm delivery, low birthweight, and HIV-RNA < 50 copies/ml at third trimester in univariate and multivariate analyses. Results: Among 934 women, 536 (57.4%) were already on ART at conception. CD4/CD8 ratio (baseline value 0.570) increased significantly between the first and third trimesters, particularly in women who started ART in pregnancy (+ 0.163, vs. + 0.036 in women already on treatment). The rate of CD4/CD8 ratio normalization, defined by achieving a ratio ≥ 1 at the third trimester, was 13.2%. In multivariable analyses, women who entered pregnancy with a CD4/CD8 ratio < 0.3, compared to women with ratio ≥ 1, were almost four-times less likely to have third-trimester HIV-RNA < 50 copies/ml (AOR 0.258, 95%CI 0.111–0.601), and more than twice as likely to have preterm delivery (AOR 2.379, 95%CI 1.082–5.232). For preterm delivery, also a baseline CD4/CD8 ratio between 0.3 and 0.45 was significantly associated with an increased risk (AOR: 3.415, 95%CI 1.690–6.900). Conclusion: We described for the first time independent associations of low CD4/CD8 ratio with preterm delivery and HIV-RNA suppression.

Published
2021

4. Weight Gain during Pregnancy in Women with HIV Receiving Different Antiretroviral Regimens

Author

Floridia, M., Masuelli, G., Tassis, B., Franceschetti, L., Savasi, V. M., Spinillo, A., Tamburrini, E., Guaraldi, G., Dalzero, S., Sansone, M., Chiodo, A., Degli Antoni, A. M., Pinnetti, C., Liuzzi, G., Ravizza, M., Di Lorenzo, F., Sterrantino, G., Meli, M., Campolmi, I., Vichi, F., Del Pin, B., Marocco, R., Mastroianni, C., Mercurio, V. S., Zanaboni, D., Nardini, G., Stentarelli, C., Beghetto, B., Molinari, A., Crisalli, M. P., Donisi, A., Ruggieri, A., Piepoli, M., Cerri, V., Zuccotti, G., Giacomet, V., Paradiso, L., Forlanini, F., Longoni, E., Placido, G., Milini, P., Savalli, F., Portelli, V., Sabbatini, F., Francisci, D., Papalini, C., Bernini, L., Grossi, P., Rizzi, L., Maso, G., Bernardon, M., Bussolaro, S., della Pieta, I., Sorz, A., Meloni, A., Dedoni, M., Ortu, F., Piano, P., Citernesi, A., Vicini, I. B., Luzi, K., Roccio, M., Vimercati, A., Calabretti, D., Gigante, S., Guerra, B., Cervi, F., Simonazzi, G., Margarito, E., Capretti, M. G., Marsico, C., Faldella, G., Martinelli, P., Agangi, A., Capone, A., Maruotti, G. M., Tibaldi, C., Trentini, L., Todros, T., Frisina, V., Cardellicchio, E., Giaquinto, C., Fiscon, M., Rubino, E., Badolato, R., Forleo, M. A., Ruggiero, M., Genovese, O., Cafforio, C., Casadei, A. M., Cavaliere, A. F., Cellini, M., Marconi, A. M., Ierardi, M., Simonetti, S. C., Alfieri, N., Agrati, S., Polizzi, C., Mattei, A., Pirillo, M. F., Amici, R., Galluzzo, C. M., Donnini, S., Baroncelli, S., Cerioli, A., de Martino, M., Parazzini, F., and Vella, S.

Subjects
medicine.medical_specialty, Multivariate analysis, Anti-HIV Agents, Integrase inhibitor, HIV Infections, Overweight, Weight Gain, Cohort Studies, Pregnancy, Internal medicine, medicine, Humans, Pharmacology (medical), Settore MED/38 - Pediatria Generale e Specialistica, Pharmacology, business.industry, Weight change, Odds ratio, medicine.disease, Obesity, Infectious Diseases, Reverse Transcriptase Inhibitors, Female, medicine.symptom, business, Weight gain
Abstract

Background No published studies have evaluated in pregnant women with HIV weight gain with different antiretroviral drug classes. Methods Data from a national cohort study were used. We compared absolute weight gain and occurrence of excessive weight gain in women with HIV who received during pregnancy integrase inhibitors (INSTI), protease inhibitors (PI), or non-nucleoside reverse transcriptase inhibitors (NNRTI). Excessive weight gain was defined according to the Institute of Medicine recommendations. Possible predictors of weight gain were assessed using univariate and multivariate analyses. Results Among 273 cases (PI: 191, NNRTI: 43, INSTI: 39), the mean weight increase was 11.3 kg, and 25.4% of the mothers had an excessive weight increase. No significant differences were found among the three treatment groups for absolute weight increase, occurrence of excessive weight gain, infant birthweight, and other pregnancy and laboratory outcomes. The comparisons of individual drugs, although based on a limited number of cases, suggested no major differences. A significant positive correlation was found between weight gain and CD4+ T-cell increase during pregnancy. In multivariate analyses, drug class and nucleoside backbone were not associated with absolute or excessive weight increase. Excessive weight increase was significantly associated with week of delivery (adjusted odds ratio: 1.74, 95% CI 1.15, 2.63), obesity (5.21, 95% CI 1.85, 14.64), overweight (7.95, 95% CI 3.26, 19.39), recent substance use (5.96, 95% CI 1.13, 31.40) and fasting 2nd trimester hyperglycaemia (3.94, 95% CI 1.14, 13.65). Conclusions No significant differences in absolute weight change or occurrence of excessive weight gain were found among women with HIV who received during pregnancy different classes of antiretroviral drugs.

Published
2021

12. Abacavir/Lamivudine and Tenofovir/Emtricitabine in Pregnant Women with Hiv: Laboratory and Clinical Outcomes in an Observational National Study

Author

Floridia, M., Pinnetti, C., Ravizza, M., Masuelli, G., Personeni, C., Sansone, M., Antoni, A. D., Guaraldi, G., Spinillo, A., Tassis, B., Dalzero, S., Liuzzi, G., Tamburrini, E., Di Lorenzo, F., Sterrantino, G., Meli, M., Campolmi, I., Vichi, F., Del Pin, B., Marocco, R., Mastroianni, C., Mercurio, V. S., Maccabruni, A., Zaramella, M., Mariani, B., Nardini, G., Stentarelli, C., Beghetto, B., Degli Antoni, A. M., Molinari, A., Crisalli, M. P., Donisi, A., Piepoli, M., Cerri, V., Zuccotti, G., Giacomet, V., Coletto, S., Di Nello, F., Madia, C., Placido, G., Milini, P., Savalli, F., Portelli, V., Sabbatini, F., Francisci, D., Papalini, C., Bernini, L., Grossi, P., Rizzi, L., Bernardon, M., Maso, G., Rizzante, E., Belcaro, C., Meloni, A., Dedoni, M., Ortu, F., Piano, P., Citernesi, A., Vicini, I. B., Luzi, K., Roccio, M., Vimercati, A., Miccolis, A., De Gennaro, A., Guerra, B., Cervi, F., Simonazzi, G., Margarito, E., Capretti, M. G., Marsico, C., Faldella, G., Martinelli, P., Agangi, A., Capone, A., Maruotti, G. M., Tibaldi, C., Trentini, L., Todros, T., Frisina, V., Cetin, I., Brambilla, T., Savasi, V., Giaquinto, C., Fiscon, M., Rubino, E., Franceschetti, L., Badolato, R., Tiso, G. C., Genovese, O., Cafforio, C., Casadei, A. M., Cavaliere, A. F., Cellini, M., Marconi, A. M., Sacchi, V., Ierardi, M., Polizzi, C., Mattei, A., Pirillo, M. F., Amici, R., Galluzzo, C. M., Donnini, S., and Baroncelli, S.

Subjects
0301 basic medicine, HIV Infections, Hemoglobins, 0302 clinical medicine, Abacavir, Anemia, Cholesterol, Emtricitabine, HIV-RNA, Lamivudine, Low birthweight, Pregnancy, Preterm delivery, Tenofovir, immune system diseases, Antiretroviral Therapy, Highly Active, Pharmacology (medical), 030212 general & internal medicine, Pregnancy Outcome, virus diseases, Lipoproteins, LDL, Drug Combinations, Infectious Diseases, Hypertension, RNA, Viral, Female, medicine.drug, Adult, medicine.medical_specialty, Anti-HIV Agents, Pregnancy Trimester, Third, 03 medical and health sciences, Internal medicine, medicine, Humans, AIDS-Associated Nephropathy, Cesarean Section, business.industry, Abacavir/Lamivudine, medicine.disease, 030112 virology, Dideoxynucleosides, CD4 Lymphocyte Count, Pregnancy Complications, HIV-1, Observational study, business
Abstract

Abacavir-lamivudine (ABC/3TC) and tenofovir-emtricitabine (TDF/FTC) represent in the guidelines of several countries, including Italy and United States, the preferred nucleoside/nucleotide backbones of antiretroviral regimens. We assessed their profile in pregnancy using data from a national observational study.Laboratory measures (CD4, HIV-RNA, lipid profile, glucose, hemoglobin, and alanine transferase) and pregnancy outcomes (preterm delivery, low birthweight, nonelective cesarean section, birthweight Z-score, congenital defects, HIV transmission, maternal weight gain, and pregnancy complications) were compared after prenatal exposure to ABC/3TC or TDF/FTC.The study evaluated 913 pregnancies (ABC/3TC: 252; TDF/FTC: 661). At entry in pregnancy, women on TDF/FTC were older (33.6 vs. 32.4 years, P = 0.005), less frequently on treatment (66.9% vs. 80.2%, P0.001), and had lower CD4 counts (475/mm vs. 533/mm, P = 0.003) and higher plasma HIV-RNA levels (2.48 vs. 2.22 log10 copies/mL, P = 0.003). Women on ABC/3TC had more commonly hypertension/nephropathy (5.2% vs. 2.0%, P = 0.013). No major differences were observed in the main pregnancy outcomes and in rates of undetectable HIV-RNA at third trimester. In a subgroup analysis that evaluated at third trimester only cases with regular 3-drug treatment during pregnancy, women on TDF/FTC had lower hemoglobin levels (median: 11.1 vs. 11.8 g/dL, P = 0.002) and women on ABC/3TC had higher levels of total cholesterol (median: 230 vs. 216 mg/dL, P = 0.023) and low-density lipoprotein-cholesterol (133 vs. 111 mg/dL, P = 0.030).In this study, use of TDF/FTC and ABC/3TC in pregnancy was associated with similar pregnancy outcomes and with some differences in laboratory measures that might guide physicians' prescriptions in mothers with hematologic or metabolic risk factors.

Published
2018

13. Pregnant with HIV before age 25: Data from a large national study in Italy, 2001-2016

Author

Floridia, M., Masuelli, G., Tamburrini, E., Cetin, I., Liuzzi, G., Martinelli, Paolo, Guaraldi, G., Spinillo, A., Vimercati, A., Maso, G., Pinnetti, C., Frisina, V., Dalzero, S., Ravizza, M., Di Lorenzo, F., Sterrantino, G., Meli, M., Campolmi, I., Vichi, F., Del Pin, B., Marocco, R., Mastroianni, C., Mercurio, V. S., Maccabruni, A., Zaramella, M., Mariani, Bianca, Nardini, G., Stentarelli, C., Beghetto, B., Antoni, A. M. Degli, Molinari, A., Crisalli, M. P., Donisi, A., Piepoli, M., Cerri, V., Zuccotti, G., Giacomet, V., Coletto, S., Di Nello, F., Madia, C., Placido, G., Milini, P., Savalli, F., Portelli, V., Sabbatini, F., Francisci, D., Angeli, G., Bernini, L., Grossi, P., Rizzi, L., Bernardon, M., Rizzante, E., Belcaro, C., Meloni, Antonio, Dedoni, M., Ortu, F., Piano, Pierluigi, Citernesi, A., Vicini, I. Bordoni, Luzi, K., Roccio, M., Miccolis, A., De Gennaro, A., Guerra, B., Cervi, Filippo, Simonazzi, G., Margarito, E., Capretti, M. G., Marsico, C., Faldella, G., Sansone, M., Agangi, A., Capone, A., Maruotti, G. M., Tibaldi, C., Trentini, L., Todros, T., Brambilla, T., Savasi, V., Personeni, C., Giaquinto, C., Fiscon, M., Rubino, E., Franceschetti, L., Tassis, B., Genovese, O., Cafforio, C., Casadei, A. M., Cavaliere, A. F., Cellini, Matteo, Marconi, A. M., Sacchi, V., Ierardi, M., Polizzi, C., Mattei, A., Pirillo, M. F., Amici, R., Galluzzo, C. M., Donnini, S., Baroncelli, S., Cerioli, A., DE MARTINO, MARIA CRISTINA, Parazzini, F., and Vella, S.

Subjects
Antiretroviral treatment, HIV diagnosis, HIV testing, pregnancy, women's health, medicine.medical_specialty, Pediatrics, Longitudinal study, Adolescent, Epidemiology, Short Report, HIV Infections, Cohort Studies, 03 medical and health sciences, Young Adult, 0302 clinical medicine, Pregnancy, medicine, Odds Ratio, Humans, 030212 general & internal medicine, Young adult, 030219 obstetrics & reproductive medicine, business.industry, Odds ratio, medicine.disease, Female, Italy, Infectious Diseases, Confidence interval, Family planning, business, Cohort study
Abstract

SUMMARYYoung pregnant women with HIV may be at significant risk of unplanned pregnancy, lower treatment coverage, and other adverse pregnancy outcomes. In a large cohort of pregnant women with HIV in Italy, among 2979 pregnancies followed in 2001–2016, 9·0% were in women P< 0·001). Younger women had a lower rate of planned pregnancy (23·2%vs.37·7%, odds ratio (OR) 0·50, 95% confidence interval (CI) 0·36–0·69), were more frequently diagnosed with HIV in pregnancy (46·5%vs.20·9%, OR 3·29, 95% CI 2·54–4·25), and, if already diagnosed with HIV before pregnancy, were less frequently on antiretroviral treatment at conception (vs.99·3%), with no differences in rate of HIV viral suppression at third trimester and adverse pregnancy outcomes. The data show that young women represent a growing proportion of pregnant women with HIV, and are significantly more likely to have unplanned pregnancy, undiagnosed HIV infection, and lower treatment coverage at conception. During pregnancy, antiretroviral treatment, HIV suppression, and pregnancy outcomes are similar compared with older women. Earlier intervention strategies may provide additional benefits in the quality of care for women with HIV.

Published
2017

14. Pregnancy outcomes and cytomegalovirus DNAaemia in HIV-infected pregnant women with CMV

Author

Ravizza, M., Tamburrini, E., Mori, F., Ortolani, P., dalle Nogare, E.R., 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, V.S., Carocci, A., Grilli, E., Maccabruni, A., Zaramella, M., Mariani, B., Natalini Raponi, G., Guaraldi, G., Nardini, G., Stentarelli, C., Beghetto, B., Degli Antoni, A.M., Molinari, A., Crisalli, M.P., 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., Alberico, S., Maso, G., Airoud, M., Soppelsa, G., Meloni, A., Dedoni, M., Cuboni, C., Ortu, F., Piano, P., Citernesi, A., Bordoni Vicini, I., Luzi, K., Spinillo, A., Roccio, M., Vimercati, A., Miccolis, A., De Gennaro, A., Guerra, B., Cervi, F., Simonazzi, G., Margarito, E., Capretti, M.G., Marsico, C., Faldella, G., Sansone, M., Martinelli, P., Agangi, A., Capone, A., Maruotti, G.M., Tibaldi, C., Trentini, L., Todros, T., Masuelli, G., Frisina, V., Cetin, I., 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, A.M., Cavaliere, A.F., Cellini, M., Castelli Gattinara, G., Marconi, A.M., Dalzero, S., Sacchi, V., Ierardi, M., Polizzi, C., Mattei, A., Pirillo, M.F., Amici, R., Galluzzo, C.M., Donnini, S., Baroncelli, S., Floridia, M., Villani, P., Cusato, M., Cerioli, A., De Martino, M., Mastroiacovo, P., Parazzini, F., Vella, S., and Degli Antoni, A.

Published
2016
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18. Rate, correlates and outcomes of repeat pregnancy in HIV-infected women

Author

Floridia, M., Tamburrini, E., Masuelli, G., Martinelli, P., Spinillo, A., Liuzzi, G., Vimercati, A., Alberico, S., Maccabruni, A., Pinnetti, C., Frisina, V., Dalzero, S., Ravizza, M., Mori, F., Ortolani, P., dalle Nogare, E. R., 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, V. S., Carocci, A., Grilli, E., Zaramella, M., Mariani, B., Natalini Raponi, G., Guaraldi, G., Nardini, G., Stentarelli, C., Beghetto, B., Degli Antoni, A. M., Molinari, A., Crisalli, M. P., 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., Meloni, A., Dedoni, M., Cuboni, C., Ortu, F., Piano, P., Citernesi, A., Bordoni Vicini, I., Luzi, K., Roccio, M., Miccolis, A., De Gennaro, A., Guerra, B., Cervi, F., Simonazzi, G., Margarito, E., Capretti, M. G., Marsico, C., Faldella, G., Sansone, M., Agangi, A., Capone, A., Maruotti, M., Tibaldi, C., Trentini, L., Todros, T., Cetin, I., Brambilla, T., Savasi, V., Personeni, C., Giaquinto, C., Fiscon, M., Rubino, E., Bucceri, A., Matrone, R., Scaravelli, G., Genovese, O., Cafforio, C., Tozzi, V., Massetti, P., Casadei, A. M., Cavaliere, A. F., Cellini, M., Castelli Gattinara, G., Marconi, A. M., Sacchi, V., Ierardi, M., Polizzi, C., Mattei, A., Pirillo, M. F., Amici, R., Galluzzo, C. M., Donnini, S., Baroncelli, S., Villani, P., Cusato, M., Cerioli, A., De Martino, M., Mastroiacovo, P., Parazzini, F., Vella, S., Floridia, M, Tamburrini, E., Masuelli, G., Martinelli, P., Spinillo, A., Liuzzi, G., Vimercati, A., Alberico, S., Maccabruni, A., Pinnetti, C., Frisina, V., Dalzero, S., Ravizza, M. [, Faldella G., and ]

Subjects
0301 basic medicine, Adult, medicine.medical_specialty, HIV RNA, Anti-HIV Agents, birth weight, HIV, pregnancy, preterm delivery, Health Policy, Infectious Diseases, Pharmacology (medical), Birth weight, Emigrants and Immigrants, HIV Infections, Settore MED/17 - MALATTIE INFETTIVE, Pregnancy, Preterm delivery, CD4 Lymphocyte Count, Female, HIV-1, Humans, Premature Birth, Viral Load, Infant, Low Birth Weight, 03 medical and health sciences, medicine, Obstetrics, business.industry, Low Birth Weight, Infant, Odds ratio, medicine.disease, 030112 virology, Confidence interval, Pregnancy rate, Low birth weight, Premature birth, medicine.symptom, business, Viral load
Abstract

Objectives The aim of the study was to assess the rate, determinants, and outcomes of repeat pregnancies in women with HIV infection. Methods Data from a national study of pregnant women with HIV infection were used. Main outcomes were preterm delivery, low birth weight, CD4 cell count and HIV plasma viral load. Results The rate of repeat pregnancy among 3007 women was 16.2%. Women with a repeat pregnancy were on average younger than those with a single pregnancy (median age 30 vs. 33 years, respectively), more recently diagnosed with HIV infection (median time since diagnosis 25 vs. 51 months, respectively), and more frequently of foreign origin [odds ratio (OR) 1.36; 95% confidence interval (CI) 1.10–1.68], diagnosed with HIV infection in the current pregnancy (OR: 1.69; 95% CI: 1.35–2.11), and at their first pregnancy (OR: 1.33; 95% CI: 1.06–1.66). In women with sequential pregnancies, compared with the first pregnancy, several outcomes showed a significant improvement in the second pregnancy, with a higher rate of antiretroviral treatment at conception (39.0 vs. 65.4%, respectively), better median maternal weight at the start of pregnancy (60 vs. 61 kg, respectively), a higher rate of end-of-pregnancy undetectable HIV RNA (60.7 vs. 71.6%, respectively), a higher median birth weight (2815 vs. 2885 g, respectively), lower rates of preterm delivery (23.0 vs. 17.7%, respectively) and of low birth weight (23.4 vs. 15.4%, respectively), and a higher median CD4 cell count (+47 cells/μL), with almost no clinical progression to Centers for Disease Control and Prevention stage C (CDC-C) HIV disease (0.3%). The second pregnancy was significantly more likely to end in voluntary termination than the first pregnancy (11.4 vs. 6.1%, respectively). Conclusions Younger and foreign women were more likely to have a repeat pregnancy; in women with sequential pregnancies, the second pregnancy was characterized by a significant improvement in several outcomes, suggesting that women with HIV infection who desire multiple children may proceed safely and confidently with subsequent pregnancies.

Published
2016

19. Atazanavir and lopinavir profile in pregnant women with HIV: tolerability, activity and pregnancy outcomes in an observational national study

Author

Floridia, M., Ravizza, M., Masuelli, G., Giacomet, V., Martinelli, P., Degli Antoni, A., Spinillo, A., Fiscon, M., Francisci, D., Liuzzi, G., Pinnetti, C., Marconi, A. M., Tamburrini, E., Mori, F., Ortolani, P., dalle Nogare, E. R., 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, V. S., Carocci, A., Grilli, E., Maccabruni, A., Zaramella, M., Mariani, B., Natalini Raponi, G., Guaraldi, Giovanni, Nardini, Giulia, Stentarelli, Chiara, Beghetto, Barbara, Degli Antoni, A. M., Molinari, A., Crisalli, M. P., Donisi, A., Piepoli, M., Cerri, V., Zuccotti, G., Fabiano, V., Placido, G., Vivarelli, A., Castelli, P., Savalli, F., Portelli, V., Sabbatini, F., Bernini, L., Grossi, P., Rizzi, L., Alberico, S., Maso, G., Airoud, M., Soppelsa, G., Meloni, A., Dedoni, M., Cuboni, C., Ortu, F., Piano, P., Citernesi, A., Bordoni Vicini, I., Luzi, K., Roccio, M., Vimercati, A., Miccolis, A., Bassi, E., Guerra, B., Cervi, F., Puccetti, C., Murano, P., Contoli, M., Capretti, M. G., Marsico, C., Faldella, G., Sansone, M., Agangi, A., Tibaldi, C., Trentini, L., Todros, T., Frisina, V., Cetin, I., Brambilla, T., Savasi, V., Personeni, C., Giaquinto, C., Rinaldi, R., Rubino, E., Bucceri, A., Matrone, R., Scaravelli, G., Fundaro, C., Genovese, O., Cafforio, C., Tozzi, V., Massetti, P., Casadei, A. M., Cavaliere, A. F., Finelli, V., Cellini, M., Castelli Gattinara, G., Dalzero, S., Sacchi, V., De Pirro, A., Polizzi, C., Mattei, A., Pirillo, M. F., Amici, R., Galluzzo, C. M., Donnini, S., Baroncelli, S., Regazzi, M., Villani, P., Cusato, M., Cerioli, A., De Martino, M., Mastroiacovo, P., Moroni, M., Parazzini, F., Vella, S., Floridia, M, Ravizza, M, Masuelli, G, Giacomet, V, Martinelli, Pasquale, Degli Antoni, A, Spinillo, A, Fiscon, M, Francisci, D, Liuzzi, G, Pinnetti, C, Marconi, Am, Tamburrini, E, on behalf of The Italian Group on Surveillance on Antiretroviral Treatment in, Pregnancy, Floridia, M1, Italian Group on Surveillance on Antiretroviral Treatment in, P. r. e. g. n. a. n. c. y., Marco Floridia, Marina Ravizza, Giulia Masuelli, Vania Giacomet, Pasquale Martinelli, Anna Degli Antoni, Arsenio Spinillo, Marta Fiscon, Daniela Francisci, Giuseppina Liuzzi, Carmela Pinnetti, Anna Maria Marconi, Enrica Tamburrini, on behalf of The Italian Group on Surveillance on Antiretroviral Treatment in Pregnancy [.., Capretti, M.G., Marsico, C., Faldella, G., and ].

Subjects
Pyridines, Pyridine, HIV Infections, Triglyceride, Lopinavir, Liver Function Tests, Pregnancy, HIV Infection, Pharmacology (medical), Viral, Pregnancy Complications, Infectious, triglycerides, pre-term delivery, medicine.diagnostic_test, Liver Function Test, Obstetrics, Medicine (all), Pregnancy Outcome, Infectious, virus diseases, HIV, pregnancy, RNA, Lipid, Viral Load, Lipids, Infectious Diseases, Tolerability, Oligopeptide, Population study, RNA, Viral, Female, medicine.symptom, bilirubin, Viral load, Oligopeptides, Human, medicine.drug, Microbiology (medical), Adult, medicine.medical_specialty, HIV RNA, Anti-HIV Agents, Atazanavir Sulfate, Infectious Disease, Bilirubin, Cholesterol, Pre-term delivery, Triglycerides, Pharmacology, cholesterol, Settore MED/17 - MALATTIE INFETTIVE, medicine, Humans, business.industry, Anti-HIV Agent, medicine.disease, Atazanavir, CD4 Lymphocyte Count, Pregnancy Complications, Immunology, Pregnancy Complications, Infectiou, business, Liver function tests, Weight gain
Abstract

BACKGROUND: Atazanavir and lopinavir represent the main HIV protease inhibitors recommended in pregnancy, but comparative data in pregnant women are limited. METHODS: Women from a national observational study, exposed in pregnancy to either atazanavir or lopinavir, were compared for glucose and lipid profiles, liver function tests, CD4 count, HIV RNA and main pregnancy outcomes. Statistical methods included univariate and multivariable analyses. RESULTS: The study population included 428 pregnancies (lopinavir, 322; atazanavir, 106). The lopinavir group was characterized by higher rates of HIV diagnosis in pregnancy and treatment indication for maternal health, lower CD4 counts, higher HIV RNA levels, less frequent antiretroviral treatment at conception and shorter duration of drug exposure during pregnancy. No differences in pregnancy outcomes, glucose metabolism and weight gain were observed. The two groups also showed in a multivariable analysis similar odds for detectable HIV RNA in the third trimester (adjusted OR 0.85, 95% CI 0.35-2.10, P = 0.730). Total lipid levels were significantly higher in the lopinavir group (median values in the third trimester 239 versus 221 mg/dL for total cholesterol and 226 versus 181 mg/dL for triglycerides; P < 0.001 for both comparisons) and bilirubin levels were significantly higher in the atazanavir group (1.53 versus 0.46 mg/dL, P < 0.001). CONCLUSIONS: In this observational study atazanavir and lopinavir showed similar safety and activity in pregnancy, with no differences in the main pregnancy outcomes. Atazanavir use was associated with a better lipid profile and with higher bilirubin levels. Overall, the study findings confirm that these two HIV protease inhibitors represent equally valid alternative options.

Published
2014

21. 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, D., Tamburrini, E., Mori, F., Ortolani, P., Dalle Nogare, E. R., 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, Claudio Maria, Mercurio, V. S., Carocci, A., Grilli, E., Maccabruni, A., Zaramella, M., Mariani, B., Natalini Raponi, G., Guaraldi, G., Luzi, K., Nardini, G., Stentarelli, C., Degli Antoni, A. M., Molinari, A., Crisalli, M. P., Donisi, A., Piepoli, M., Cerri, V., Zuccotti, G., Giacomet, V., Fabiano, V., Placido, G., Vivarelli, A., Castelli, P., Savalli, F., Portelli, V., Sabbatini, F., 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, M. G., 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., Fundaro, C., Genovese, O., Cafforio, C., Liuzzi, G., Tozzi, V., Massetti, Anna Paola, Anceschi, M., Casadei, A. M., Cavaliere, A. F., Finelli, V., Cellini, M., Castelli Gattinara, G., Marconi, A. M., Sacchi, V., De Pirro, A., Polizzi, C., Mattei, A., Pirillo, M. F., Amici, R., Galluzzo, C. M., Donnini, S., Baroncelli, S., Villani, P., Cusato, M., Cerioli, A., De Martino, M., Mastroiacovo, P., Moroni, M., Parazzini, F., Vella, S., Floridia, M, Ravizza, M, Masuelli, G, Dalzero, S, Pinnetti, C, Cetin, I, Meloni, A, Spinillo, A, Rubino, E, Francisci, D, Tamburrini, E, Italian Group on Surveillance on Antiretroviral Treatment in, Pregnancy, Martinelli, Pasquale, Floridia M, Ravizza M, Masuelli G, Dalzero S, Pinnetti C, Cetin I, Meloni A, Spinillo A, Rubino E, Francisci D, Tamburrini E, Faldella G, Guerra B, and for the Italian Group on Surveillance on Antiretroviral Treatment in Pregnancy

Subjects
Microbiology (medical), medicine.medical_specialty, antiretroviral therapy, MEDLINE, Human immunodeficiency virus (HIV), HIV Infections, body mass index, medicine.disease_cause, Settore MED/17 - MALATTIE INFETTIVE, Body Mass Index, BMI, weight gain, HIV-1, Pregnancy, Medicine, Humans, HIV infection, pregnancy, Pregnancy Complications, Infectious, business.industry, Obstetrics, Cesarean Section, Infectious, Pregnancy Outcome, HIV, medicine.disease, Pregnancy Complications, Infectious Diseases, Italy, National study, Female, medicine.symptom, business, Weight gain, Body mass index
Abstract

Although most of the women (69.4%) had a normal BMI at start of pregnancy, only 37% had an adequate weight gain during pregnancy. Inadequate body weight gain was more common (44.8%) than excessive weight gain (18.2%), but 40% of overweight women and 50% of obese women had an excessive weight gain in pregnancy, with about 9% of the women in these categories gaining >18 kg during pregnancy (Table 1). Only 1.9% of the women had a vaginal delivery; elective and nonelective cesarean deliveries accounted for 81.3% and 16.7% of deliveries, respectively. Compared to underweight/normal women, overweight/obese women had similar occurrences of preterm delivery (23.4% vs 22.7%, P = .871), significantly lower rates of low birthweight (14.2% vs 24.2%, P = .007) and nonelective cesarean deliveries (11.7% vs 18.3%, P = .042), and a significantly higher occurrence of fasting plasma glucose >92 mg/dL at 20–28 weeks (12.1% vs 6.6%, P = .027), hypertension during pregnancy (6.4% vs 2.7%, P = .019), and gestational age–adjusted birthweight >90th percentile (15.5% vs 5.0%, P < .001). Complications of delivery, major birth defects, and HIV transmission were similar between the 2 groups (7.3% vs 7.6%, P = .881; 2.6% vs 3.5%, P = .589; and 0.8% vs 0.5%, P = .661, respectively). An inadequate weight gain during pregnancy was associated with an increased risk of nonelective cesarean delivery (OR, 1.589 [95% CI, 1.077–2.346], P = .020). Excessive weight gain during pregnancy was not associated with either hypertension (OR, 1.364 [95% CI, .537–3.465], P = .514) or 20–28 week glucose level of >92 mg/dL (OR, 0.841 [95% CI, .399–1.772], P = .648), but was significantly associated with birthweight >90th percentile (OR, 2.271 [95% CI, 1.229–4.195], P = .009), and appeared to be protective against low birthweight (OR, 0.544 [95% CI, .323–.918], P = .023) and birthweight

Published
2013

22. Limited occurrence of new grade 3-4 toxicity events with salvage regimens based on raltegravir and /or maraviroc: 96 weeks data from the ISS NIA cohort study

Author

Weimer, L. E., Floridia, M., Bucciardini, R., Baroncelli, S., Galluzzo, C. M., Pirillo, M. F., Fragola, V., Donnini, S., Mirra, M., Di Gragorio, M., Lucattini, S., Fucili, L., Angarano, G., Ladisa, N., Volpe, A., Vullo, V., D’Ettorre, G., Ceccarelli, G., Andreoni, M., Sarmati, L., Delle Rose, D., Tozzi, V., Petrosillo, N., Bellagamba, R., Libertone, R., Cicalini, S., Sighinolfi, L., Segala, D., Armignacco, O., Preziosi, R., Ferrari, C., Degli Antoni, A., Cavalli, A., Parruti, G., Sozio, F., Cosentino, L., Vivarelli, A., Manconi, Pe, Ort, F., Di Martino, M. L., Viale, P., Verucchi, G., Tedeschi, S., Mura, M. S., Mannazzu, M., Cattari, G., Tavio, M., Del Gobbo, R., Mataloni Paggi, A., Giacometti, A., Cirioni, O., Marchionni, E., Silvestri, C., Sebastianelli, S., Brescini, L., Baldelli, F., Francisci, D., Schiaroli, E., Bastianelli, S., Guaraldi, Giovanni, Nardini, Giulia, Stentarelli, Chiara, and Beghetto, Barbara

Subjects
HIV infection, antiretroviral therapy
Published
2013

24. Limited occurence of new grade 3-4 toxicity events with salvage regimens based on raltegravir and /or maraviroc: 96 weeks data from the ISS NIA cohort study

Author

Weimer, Le, Floridia, M., Bucciardini, R., Baroncelli, S., C M, Galluzzo, M F, Pirillo, Fragola, V., Donnini, S., Mirra, M., Di Gregorio, M., Lucattini, S., Fucili, L., Angarano, G., Ladisa, N., Volpe, A., Vullo, V., D Ettorre, G., Ceccarelli, G., Andreoni, M., Sarmati, L., Delle Rose, D., Tozzi, V., Petrosillo, N., Bellagamba, R., Libertone, R., Cicalini, S., Sighinolfi, L., Daniela Segala, Armignacco, O., Preziosi, R., Ferrari, C., Degli Antoni, A., Cavalli, A., Parruti, G., Sozio, F., Cosentino, L., Vivarelli, A., P E, Manconi, Ort, F., M L, Di Martino, Viale, P., Verrucchi, G., Tedeschi, S., M S, Mura, Mannazzu, M., Cattari, G., Tavio, M., Del Gobbo, R., Mataloni Paggi, A., Giacometti, A., Cirioni, O., Marchionni, E., Silvestri, C., Sebastianelli, S., Brescini, L., Baldelli, F., Guaraldi, Giovanni, Maria Giulia Bernardini, Stentarelli, Chiara, and Beghetto, Barbara

Subjects
maraviroc, HIV infection, raltegravir, NO
Published
2013

27. Pregnancy outcomes in women with advanced HIV infection in Italy

Author

Fundaro', Carlo, Baroncelli, S, Tamburrini, Enrica, Ravizza, M, Pinnetti, Carmela, Dalzero, S, Crepaldi, A, Liuzzi, G, Molinari, A, Vimercati, and Floridia, M.

Subjects
Settore MED/38 - PEDIATRIA GENERALE E SPECIALISTICA, HIV Infection
Published
2011

34. Long term protection against SHIV89.6P replication in Tat protein or tat DNA vaccinated cynomolgus monkeys upon tetanus toxoid boost and correlation with Tat immune response

Author

Maggiorella, M. T., Baroncelli, S., Michelini, Z., FANALES BELASIO, E., Moretti, S., Sernicola, L., Cara, A., Butto', S., Fiorelli, V., Tripiciano, A., Caputo, Antonella, Borsetti, A., Negri, D. M., Ridolfi, B., Bona, R., TEN HAAFT, P., Belli, R., Macchia, I., Leone, P., PAVONE COSSUT, M. R., Verani, P., Titti, F., Cafaro, A., and Ensoli, B.

Published
2004

36. Development of HIV/AIDS vaccine based on Tat: preclinical and clinical studies

Author

Cara, A., Cafaro, A., Baroncelli, S., Maggiorella, Mt, Negri, Drm, Fanales-Belasio, E., Moretti, S., Michelini, Z., Fiorelli, V., Butto, S., Tripiciano, A., Sernicola, L., Scoglio, A., Borsetti, A., Ridolfi, B., Iole Macchia, Mancini, Mg, Belli, R., Farcomeni, S., Nappi, F., Vardas, E., Colvin, M., Laguardia, E., Caputo, A., Magnani, M., Titti, F., and Ensoli, B.

Subjects
NO
Published
2002

46. Virological failure at one year in triple-class experienced patients switching to raltegravir-based regimens is not predicted by baseline factors.

Author

Bucciardini R, D'Ettorre G, Baroncelli S, Ceccarelli G, Parruti G, Weimer LE, Fragola V, Galluzzo CM, Pirillo MF, Lucattini S, Bellagamba R, Francisci D, Ladisa N, Degli Antoni A, Guaraldi G, Manconi PE, Vullo V, Preziosi R, Cirioni O, and Verucchi G

Abstract

We evaluated rates and determinants of virological failure in triple-class experienced patients receiving raltegravir-based regimens from a national observational study over 48 weeks, defined by any one of the following: (1) no HIV-RNA suppression to undetectable levels (<50 copies/mL) during follow-up; (2) detectable viral load after obtaining undetectable levels; and (3) leaving the study before 48 weeks. Among 101 eligible patients, 26 (25.7%; 95% CI 17.2-34.2) had virological failure. No significant differences between patients with and without virological failure were observed for gender, age, route of transmission, baseline CD4/HIV-RNA, CDC group, hepatitis B or C co-infections, resistance (based on the last genotype available), type and number of concomitant drug classes, concomitant use of darunavir, atazanavir, etravirine, enfuvirtide or maraviroc, and health-related quality-of-life measures. A high rate of treatment response was observed. The analyses did not identify any baseline factor associated with failure, including resistance status. Even if we cannot exclude the presence of pre-existing minority resistant variants not captured by genotypic tests, the lack of baseline predictors of failure suggests the need to monitor patients closely during follow up for other factors, such as potential drug interactions and reduced levels of adherence, which may favour virological failure. [ABSTRACT FROM AUTHOR]

Published
2012

47. Evolution of proviral DNA HIV-1 tropism under selective pressure of maraviroc-based therapy.

Author

Baroncelli S, Galluzzo CM, Weimer LE, Pirillo MF, Volpe A, Mercuri A, Cavalli A, Fragola V, Monno L, Degli Antoni A, Ladisa N, Francisci D, Bucciardini R, Floridia M, Baroncelli, Silvia, Galluzzo, Clementina Maria, Weimer, Liliana Elena, Pirillo, Maria Franca, Volpe, Anna, and Mercuri, Alessandra

Abstract

Objectives: To evaluate the evolution of HIV-1 coreceptor tropism in proviral DNA of patients during maraviroc-based therapy.Methods: Fourteen heavily high active antiretroviral therapy (HAART)-treated patients with a CCR5 Trofile profile were monitored over a 24 month period from the start of maraviroc therapy. Whole-blood samples were obtained at different timepoints, and coreceptor tropism was determined for proviral DNA from the V3-loop region sequence using the Geno2Pheno algorithm [false positive rate (FPR): 20%].Results: At the start of maraviroc treatment, 13/14 patients were viraemic (median: 4.33 log copies/mL). Concordance in R5 tropism (R5/R5) was observed between circulating HIV-RNA (Trofile) and HIV-DNA provirus in 10/14 patients (median FPR = 54.0%), while 4 patients showed a CXCR4-tropic R5/X4 variant in their provirus (FPR: 5.8%, 5.7%, 16.6% and 1.1%, respectively). All R5/R5 patients showed a stable HIV-1 DNA coreceptor usage. Two out of four R5/X4 patients showed a tropism shift in their archived provirus and, after 6 months a prevalence of R5-tropic virus was detected in DNA. The other two R5/X4 patients harboured the 11/25 genotype, and maintained X4 tropism in provirus during the study. Virological response did not reveal differences in RNA decay and CD4+ cell recovery in patients with discordant tropism.Conclusions: A relatively good correlation between RNA and DNA tropism was observed at baseline. Proviral DNA tropism remained stable over 24 months of maraviroc-based therapy, indicating that determination of proviral DNA V3 sequence could be used in tropism prediction in clinical practice. The data also confirm the importance of the 11/25 rule in predicting viral tropism. [ABSTRACT FROM AUTHOR]

Published
2012
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48. Effect of light and gibberellic acid on chromosome endoreduplication in leaf epidermis of Triticum durum Desf.

Author

Cavallini, A., Baroncelli, S., Lercari, B., Cionini, G., Rocca, M., and D'Amato, F.

Abstract

The first foliage leaf of Triticum durum Desf., cvs. Capelli and Creso, was studied for the action of light and gibberellic acid on different aspects of plant growth. Creso is a short-strawed cultivar carrying the Rht 1 gene, that influences both plant height and sensitivity to applied gibberellins. In this study, a cytophotometric analysis of chromosome endoreduplication in bulliform cells of the leaf epidermis was undertaken. The bulliform cells are arranged in long rows and comprise 4C, 8C, and 16C cells. The relative percentage of these cells was recorded under different light regimes and in the presence or absence of gibberellic acid (GA). Our data indicate that light strongly affects the occurrence of chromosome endoreduplication. Although cvs. Cappelli and Creso show the same frequency of endo-reduplicated cells in the dark, all light treatments induce lower endo-polyploidy in cv. Creso whereas, in cv. Cappelli, a reduction in endo-polyploidy is observed when plants are irradiated with blue-lacking lights. This indicates that the action of a blue-light responsive photo-receptor determines high endopolyploidy. With respect to GA treatment, cv. Creso is again shown to be insensitive to hormone application, whereas in cv. Cappelli, gibberellic acid influences endopolyploidy level in the dark, causing very high frequencies of 8C cells and relatively high frequencies of 16C cells. [ABSTRACT FROM AUTHOR]

Published
1995
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50. Characterization of a sunflower ( Helianthus annuus L.) mutant, deficient in carotenoid synthesis and abscisic-acid content, induced by in-vitro tissue culture.

Author

Fambrini, M., Pugliesi, C., Vernieri, P., Giuliano, G., and Baroncelli, S.

Abstract

Genetic variation induced by tissue culture has been characterized in many species. The present study was conducted to genetically and phenotypically characterize an albino mutant in sunflower induced by in-vitro culture. A single recessive gene defective in carotenoid biosynthesis eventually leads to a chlorophyll loss due to photobleaching, absence of seed dormancy, and a low level of endogenous abscisic acid (ABA) in cotyledons and leaves. Further characterization has shown that the endogenous level of the hormone does not increase after drought stress and that the mutation prevents anthocyanin synthesis. [ABSTRACT FROM AUTHOR]

Published
1994
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