94 results on '"Izzo I"'
Search Results
2. Biochemical and inflammatory modifications after switching to dual antiretroviral therapy in HIV-infected patients in Italy: A multicenter retrospective cohort study from 2007 to 2015
- Author
-
Quiros-Roldan, E, Magro, P, Raffetti, E, Izzo, I, Borghetti, A, Lombardi, F, Saracino, A, Maggiolo, F, Castelli, F, Carosi, G, Paraninfo, G, Torti, C, Cauda, R, Di Giambenedetto, S, Fabbiani, M, Colafigli, M, Scalzini, A, Castelnuovo, F, El Hamad, I, Mazzotta, F, Locaputo, S, Marino, N, Pierotti, P, Di Pietro, M, Ble, C, Vichi, F, Sighinolfi, L, Angarano, G, Ladisa, N, Monno, L, Maggi, P, Pan, A, Costarelli, S, Gori, A, Lapadula, G, Puoti, M, Viale, P, Colangeli, V, Borderi, M, Quiros-Roldan E., Magro P., Raffetti E., Izzo I., Borghetti A., Lombardi F., Saracino A., Maggiolo F., Castelli F., Carosi G., Paraninfo G. E., Torti C., Cauda R., Di Giambenedetto S., Fabbiani M., Colafigli M., Scalzini A., Castelnuovo F., El Hamad I., Mazzotta F., Locaputo S., Marino N., Pierotti P., Di Pietro M., Ble C., Vichi F., Sighinolfi L., Angarano G., Ladisa N., Monno L., Maggi P., Pan A., Costarelli S., Gori A., Lapadula G., Puoti M., Viale P., Colangeli V., Borderi M., Quiros-Roldan, E, Magro, P, Raffetti, E, Izzo, I, Borghetti, A, Lombardi, F, Saracino, A, Maggiolo, F, Castelli, F, Carosi, G, Paraninfo, G, Torti, C, Cauda, R, Di Giambenedetto, S, Fabbiani, M, Colafigli, M, Scalzini, A, Castelnuovo, F, El Hamad, I, Mazzotta, F, Locaputo, S, Marino, N, Pierotti, P, Di Pietro, M, Ble, C, Vichi, F, Sighinolfi, L, Angarano, G, Ladisa, N, Monno, L, Maggi, P, Pan, A, Costarelli, S, Gori, A, Lapadula, G, Puoti, M, Viale, P, Colangeli, V, Borderi, M, Quiros-Roldan E., Magro P., Raffetti E., Izzo I., Borghetti A., Lombardi F., Saracino A., Maggiolo F., Castelli F., Carosi G., Paraninfo G. E., Torti C., Cauda R., Di Giambenedetto S., Fabbiani M., Colafigli M., Scalzini A., Castelnuovo F., El Hamad I., Mazzotta F., Locaputo S., Marino N., Pierotti P., Di Pietro M., Ble C., Vichi F., Sighinolfi L., Angarano G., Ladisa N., Monno L., Maggi P., Pan A., Costarelli S., Gori A., Lapadula G., Puoti M., Viale P., Colangeli V., and Borderi M.
- Abstract
Background: Triple-drug regimens are the gold standard for HIV therapy. Nucleos(t)ide reverse transcriptase inhibitors (NRTIs) reducing regimens are used to decrease drugs toxicity, exposure and costs. Aim of our study was to evaluate trends of biochemical and inflammatory indices in patients switching to dual therapy (DT). Methods: We included patients that a) switched to a DT from 2007 to 2015 from a tenofovir/abacavir-based triple regimen b) previously maintained a triple and c) subsequently a dual regimen for 12 months with virological suppression. We retrieved data measured at 5 points (at the switch, 6 and 12 months before and after switch). We used platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR) and CD4/CD8 ratio as inflammatory indices. We assessed temporal trends of viro-immunological, biochemical and inflammatory parameters. Results: Overall, 364 and 65 patients switched from a tenofovir- and an abacavir-triple regimen, respectively. In the tenofovir-reducing group, creatinine clearance and lipids raised after the switch. There was a significant increase in both CD4+ cells and CD4/CD8. CD8+ cells rose after the switch, while opposite trend was found for PLR. In the abacavir-reducing group total lipids showed a decrease during the first 6 months after the switch and then stabilized. An increase of CD4+ and a decrease of CD8+ cells was observed during the study period, although not statistically significant. While CD4/CD8 remained stable after simplification, PLR decreased significantly after 6 months, then returning to baseline. CD8+ cells increased in the tenofovir-reducing group despite a viro-immunological response. Intriguingly, PLR decreased, maintaining this trend for 12 and 6 months after tenofovir and abacavir interruption respectively. Conclusions: Increased PLR has been linked to hypercholesterolemia and metabolic-syndrome, while high CD8+ cells count to increased risk of non-AIDS-related events regardless of CD4 T-cell re
- Published
- 2018
3. Biochemical and inflammatory modifications after switching to dual antiretroviral therapy in HIV-infected patients in Italy: A multicenter retrospective cohort study from 2007 to 2015
- Author
-
Quiros-Roldan, E., Magro, P., Raffetti, E., Izzo, I., Borghetti, Alberto, Lombardi, Francesca, Saracino, A., Maggiolo, F., Castelli, F., Carosi, Giulia, Paraninfo, G. E., Torti, Carlo, Cauda, Roberto, Di Giambenedetto, Simona, Fabbiani, M., Colafigli, Manuela, Scalzini, A., Castelnuovo, F., El Hamad, I., Mazzotta, F., Locaputo, S., Marino, N., Pierotti, P., Di Pietro, Maria Luisa, Ble, C., Vichi, F., Sighinolfi, L., Angarano, G., Ladisa, N., Monno, L., Maggi, P., Pan, A., Costarelli, S., Gori, A., Lapadula, G., Puoti, M., Viale, P., Colangeli, V., Borderi, M., Quiros-Roldan, E, Magro, P, Raffetti, E, Izzo, I, Borghetti, A, Lombardi, F, Saracino, A, Maggiolo, F, Castelli, F, Carosi, G, Paraninfo, G, Torti, C, Cauda, R, Di Giambenedetto, S, Fabbiani, M, Colafigli, M, Scalzini, A, Castelnuovo, F, El Hamad, I, Mazzotta, F, Locaputo, S, Marino, N, Pierotti, P, Di Pietro, M, Ble, C, Vichi, F, Sighinolfi, L, Angarano, G, Ladisa, N, Monno, L, Maggi, P, Pan, A, Costarelli, S, Gori, A, Lapadula, G, Puoti, M, Viale, P, Colangeli, V, Borderi, M, Blè, C, and Border, M
- Subjects
0301 basic medicine ,Male ,HIV Infections ,Gastroenterology ,Cohort Studies ,0302 clinical medicine ,Abacavir ,Antiretroviral Therapy, Highly Active ,030212 general & internal medicine ,Darunavir ,virus diseases ,Switch ,Middle Aged ,Antiretroviral therapy ,Infectious Diseases ,Treatment Outcome ,Italy ,Reverse Transcriptase Inhibitors ,Female ,medicine.symptom ,medicine.drug ,Research Article ,Adult ,medicine.medical_specialty ,Anti-HIV Agents ,Dual-therapy ,HIV ,Inflammation ,Atazanavir Sulfate ,CD4-CD8 Ratio ,Renal function ,Settore MED/17 - MALATTIE INFETTIVE ,lcsh:Infectious and parasitic diseases ,03 medical and health sciences ,Immune system ,Internal medicine ,medicine ,Humans ,lcsh:RC109-216 ,Tenofovir ,Retrospective Studies ,business.industry ,Retrospective cohort study ,Reverse transcriptase ,Dideoxynucleosides ,Regimen ,030104 developmental biology ,business ,CD8 - Abstract
Background Triple-drug regimens are the gold standard for HIV therapy. Nucleos(t)ide reverse transcriptase inhibitors (NRTIs) reducing regimens are used to decrease drugs toxicity, exposure and costs. Aim of our study was to evaluate trends of biochemical and inflammatory indices in patients switching to dual therapy (DT). Methods We included patients that a) switched to a DT from 2007 to 2015 from a tenofovir/abacavir-based triple regimen b) previously maintained a triple and c) subsequently a dual regimen for 12 months with virological suppression. We retrieved data measured at 5 points (at the switch, 6 and 12 months before and after switch). We used platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR) and CD4/CD8 ratio as inflammatory indices. We assessed temporal trends of viro-immunological, biochemical and inflammatory parameters. Results Overall, 364 and 65 patients switched from a tenofovir- and an abacavir-triple regimen, respectively. In the tenofovir-reducing group, creatinine clearance and lipids raised after the switch. There was a significant increase in both CD4+ cells and CD4/CD8. CD8+ cells rose after the switch, while opposite trend was found for PLR. In the abacavir-reducing group total lipids showed a decrease during the first 6 months after the switch and then stabilized. An increase of CD4+ and a decrease of CD8+ cells was observed during the study period, although not statistically significant. While CD4/CD8 remained stable after simplification, PLR decreased significantly after 6 months, then returning to baseline. CD8+ cells increased in the tenofovir-reducing group despite a viro-immunological response. Intriguingly, PLR decreased, maintaining this trend for 12 and 6 months after tenofovir and abacavir interruption respectively. Conclusions Increased PLR has been linked to hypercholesterolemia and metabolic-syndrome, while high CD8+ cells count to increased risk of non-AIDS-related events regardless of CD4 T-cell recovery and to virological failure. Whether these findings may have clinical implications, and which role DT plays on the immune system and on inflammation should be further investigated.
- Published
- 2018
4. Hepatitis A outbreak in men who have sex with men (MSM) in Brescia (Northern Italy), July 2016-July 2017
- Author
-
Comelli, A., Izzo, I., Casari, S., Spinetti, A., Bergamasco, A., and Francesco Castelli
- Subjects
Microbiology (medical) ,Adult ,Male ,Time Factors ,Hepatitis A ,HIV infection ,MSM ,Infectious Diseases ,Adolescent ,Middle Aged ,Disease Outbreaks ,Young Adult ,Italy ,Humans ,Homosexuality, Male ,Aged - Abstract
Since June 2016, an outbreak of hepatitis A has been reported in Europe. Here we report the HAV outbreak in Brescia (Northern Italy) from July 2016 to July 2017. We actively recorded all HAV cases defined by detection of HAV IgM antibodies in serum. Data on sexual behaviour, travel attitudes, concomitant sexually transmitted diseases (STDs), clinical presentation and laboratory results were collected. Forty-two confirmed cases were recorded: 25 (60%) were MSM and reported sexual contact at risk of STDs. Compared to 2015 and the first half of 2016, when only three hepatitis A cases were recorded, in the 12 months in question the number of cases rose 14-fold. Among 25 MSM, 14 were HIV-infected. Hepatitis A is usually a self-limiting disease, but it could be more serious in the case of HIV co-infection, immunosuppression and chronic hepatitis. HAV infection has a high outbreak potential in MSM because of more common oro-anal practices compared to HS, a high interconnectedness global network, chemsex practices and a new tendency to travel abroad to attend group sex events. In our experience, most cases occurred in MSM and 56% of them were HIV-infected, suggesting the need to promote active screening, immunization and education in this population.
- Published
- 2018
5. Kidney transplantation in HIV‐positive patients: a report of 14 cases
- Author
-
Casari, S, Bossini, N, Albini, L, Setti, G, Valerio, F, Izzo, I, Costarelli, S, Sandrini, S, Cancarini, G, and Castelli, F
- Subjects
Kidneys -- Transplantation ,HIV seropositivity -- Statistics -- Patient outcomes ,Kidney diseases -- Statistics -- Care and treatment -- Patient outcomes ,Health - Abstract
The HAART reduces the risk of HIV‐related renal disease but the incidence of end‐stage renal disease (ESRD). Therefore, efficacy and safety of renal transplantation (Tx) is an important resource in the HIV‐infected population. We reported the results of kidney Tx in HIV+patients from deceased donors from June 2007 to March 2012 at our institution. The patients had to have CD4+T‐cell counts≥200/mm[sup.3] and undetectable plasma HIV‐RNA if on HAART. The induction immunosuppressive therapy consisted of metilprednisolone and basilixmab; tacrolimus and/or mycofenolic acid were used for maintenance therapy. The therapeutic drug monitoring (TDM) has been performed for the adjusting of both their doses [1]. A total of 14 patients underwent kidney Tx. They were on dialysis (haemodialysis=13, 92.9%; peritoneal=1, 7.1%) for 5±3.1 years and they were included on the Tx waiting list for 10±8 months. The baseline characteristics are showed in Table 1. Donor at baseline Mean age 38±12.5 years Deceased 14/14 (100%) High/unclassified infectious risk 9 (64.29%) Recipients Mean age 44 years Patients with previous AIDS‐defining events 3 (21.4%) Median follow‐up months (IQR range) 42.75 (8.5–55.2) Patient survival at last follow‐up 14/14 (100%) Graft survival at last follow‐up 13/14 (92.9%) Mean time of acute rejection since Tx 28±20 days Patients not treated with steroid at last follow‐up 6 (43%) Plasma creatinine at last follow‐up 1.87±1.93 mg/dl Severe infectious complications (CMV pneumonia, malaria, Kaposi sarcoma) 3 (21.4%) Diabetes 3 (21.4%) CMV infection without localization 3 (21.4%) Bacterial pneumonia 4 (28.6%) Reactivation of HIV RNA 3 (21.4%) At the last available point of follow‐up (median=42.8 months, IQR=8.5–55.2), 8 out of the 13 patients (61.6%) without steroid had at least one acute rejection episode, but only 1 patient lost the graft, after 43 months (7.1%) due to chronic rejection associated with infectious and vascular complications. After Tx the median CD4+T‐cell count increased from 382.5 (IQR range=233–415) to 434 (IQR range=282–605) cells/mm[sup.3] (p=0.055). In Figure 1 are reported the CD4+trends of 9 patients with a follow‐up of at least 6 months. HIV infection was well controlled, with only 2 (14.3%) cases of virological failure which were promptly resolved after HAART regimen modification. Table 1 shows the observed infectious complications. The skin Kaposi sarcoma has been resolved by switching to immunosuppressive therapy with sirolimus [2]. Kidney Tx appears to be safe in HIV‐positive patients undergoing HAART. The viro‐immunological parameters remained well controlled with no increases in infectious complications or neoplasm and a satisfactory control of HIV infection. However, the high rejection rate is a serious concern and suggests to consider a steroid‐containing immunosuppressive regimen also in these patients. (urn:x-wiley:1758-2652:media:jia28111:jia28111-fig-0001) urn:x-wiley:1758-2652:media:jia28111:jia28111-fig-0001, References Trullas JC, Cofan F, Tuset M, Ricart MJ, Brunet M, Cervera C, et al. Renal transplantation in HIV‐infected patients: 201 update. Kidney Int. 2011;79:825–42. Gheith O, Bakr A, Wafa [...]
- Published
- 2012
- Full Text
- View/download PDF
6. A randomized, pilot trial to evaluate glomerular filtration rate by creatinine or cystatin C in naive HIV-infected patients after tenofovir/emtricitabine in combination with atazanavir/ritonavir or efavirenz
- Author
-
Albini, L, Cesana, B, Motta, D, Foca, E, Gotti, D, Calabresi, A, Izzo, I, Bellagamba, R, Fezza, R, Narciso, P, Sighinolfi, L, Maggi, P, Quiros-Roldan, E, Manili, L, Guaraldi, G, Lapadula, G, Torti, C, Albini L., Cesana B. M., Motta D., Foca E., Gotti D., Calabresi A., Izzo I., Bellagamba R., Fezza R., Narciso P., Sighinolfi L., Maggi P., Quiros-Roldan E., Manili L., Guaraldi G., Lapadula G., Torti C., Albini, L, Cesana, B, Motta, D, Foca, E, Gotti, D, Calabresi, A, Izzo, I, Bellagamba, R, Fezza, R, Narciso, P, Sighinolfi, L, Maggi, P, Quiros-Roldan, E, Manili, L, Guaraldi, G, Lapadula, G, Torti, C, Albini L., Cesana B. M., Motta D., Foca E., Gotti D., Calabresi A., Izzo I., Bellagamba R., Fezza R., Narciso P., Sighinolfi L., Maggi P., Quiros-Roldan E., Manili L., Guaraldi G., Lapadula G., and Torti C.
- Abstract
Background: Glomerular filtration rate (GFR) estimated by Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation based on creatinine or cystatine C may be more accurate methods especially in patients without chronic kidney disease. There is lack of data on GFR estimated by these methods in patients on highly active antiretroviral therapy. Methods: Antiretroviral-naive HIV-infected patients were randomized to tenofovir/emtricitabine in association with atazanavir/ritonavir (ATV/r) or efavirenz (EFV) Patients had to have an actual creatinine clearance >50 mL/minute (24-hour urine collection) and were followed for 48 weeks. RESULTS: Ninety-one patients (48 ATV/r, 43 EFV) were recruited. Using the CKD-EPI creatinine formula, there was a significant decrease in GFR up to week 48 in patients receiving ATV/r (4.9 mL/minute/m, P = 0.02) compared with a not statistically significant increment in patients prescribed EFV. Using the cystatin C-based equation, we found greater decrease in GFR in both arms, although, in the EFV arm, the decrease was not statistically significant (5.8 mL/minute/m, P = 0.92). At multivariable analysis, ATV/r was a significant predictor of greater decrease in estimated glomerular filtration rate (eGFR) (P = 0.0046) only with CKD-EPI creatinine. Conclusions: ATV/r plus tenofovir caused greater GFR decreases compared with EFV. The evaluation of eGFR by cystatin C confirmed this result, but this method seemed to be more stringent, probably precluding the possibility to detect a significant difference in the pattern of eGFR evolution between the two arms over time. More studies are needed to understand the clinical relevance of these alterations and whether cystatin C is a more appropriate method for monitoring GFR in clinical practice.
- Published
- 2012
7. Heterogeneity and penetration of HIV-1 non-subtype B viruses in an Italian province: Public health implications
- Author
-
Torti, C, Lapadula, G, Izzo, I, Brindicci, G, Labbate, G, Quiros-Roldan, E, Diallo, I, Gargiulo, F, Castelnuovo, F, Calabresi, A, Carosi, G, Manca, N, Monno, L, Torti C., Lapadula G., Izzo I., Brindicci G., Labbate G., Quiros-Roldan E., Diallo I., Gargiulo F., Castelnuovo F., Calabresi A., Carosi G., Manca N., Monno L., Torti, C, Lapadula, G, Izzo, I, Brindicci, G, Labbate, G, Quiros-Roldan, E, Diallo, I, Gargiulo, F, Castelnuovo, F, Calabresi, A, Carosi, G, Manca, N, Monno, L, Torti C., Lapadula G., Izzo I., Brindicci G., Labbate G., Quiros-Roldan E., Diallo I., Gargiulo F., Castelnuovo F., Calabresi A., Carosi G., Manca N., and Monno L.
- Abstract
This study assessed changes in prevalence and distribution of HIV-1 non-subtype B viruses in Italian and immigrant patients over two decades in a province in Italy. All HIV-positive patients who underwent genotypic resistance testing were selected. Prevalence of non-subtype B viruses in 3-year periods was calculated. All sequences of non-subtype B and those provided by REGA as unassigned were analysed for phylogenetic relationships. In total, 250/1563 (16%) individuals were infected with a non-subtype B virus. Prevalence increased over time, reaching a peak (315%) in 2004-2006. In Italian patients, the most frequent subtypes were B (925%) and F1 (4%). F1 subtype was also prevalent in patients from South America (136%); in patients of African origin, CRF02-AG (549%) and G (123%) were the most frequent. HIV-1 non-subtype B infections in Italians were mostly found in patients who acquired HIV sexually. A phylogenetic relationship between F subtypes in Italian and representative HIV-1 sequences from Brazil was found. C subtypes in Italians were phylogenetically related to subtypes circulating in Brazil. Inter-subtype recombinants were also found in the latest years. The HIV-1 epidemic in Brescia province evolved to the point where about 1/3 patients recently diagnosed harboured non-B HIV subtypes. The distribution of HIV-1 non-B subtypes in Italian patients resembled that in South American patients and phylogenetic relatedness between some Italian and South American HIV-1 strains was found. The possible epidemiological link between these two populations would have been missed by looking only at risk factors for HIV acquisition declared by patients. The evidence of inter-subtype recombinants points to significant genetic assortment. Overall our results support phylogenetic analysis as a tool for epidemiological investigation in order to guide targeted prevention strategies. Copyright © 2010 Cambridge University Press.
- Published
- 2010
8. Risk of early virological failure of once-daily tenofovir-emtricitabine plus twice-daily nevirapine in antiretroviral therapy-naive HIV-infected patients
- Author
-
Lapadula, G, Costarelli, S, Quiros-Roldan, E, Calabresi, A, Izzo, I, Carosi, G, Torti, C, Lapadula G., Costarelli S., Quiros-Roldan E., Calabresi A., Izzo I., Carosi G., Torti C., Lapadula, G, Costarelli, S, Quiros-Roldan, E, Calabresi, A, Izzo, I, Carosi, G, Torti, C, Lapadula G., Costarelli S., Quiros-Roldan E., Calabresi A., Izzo I., Carosi G., and Torti C.
- Published
- 2008
9. Updated prevalence of genotypic resistance among HIV-1 positive patients naïve to antiretroviral therapy: A single center analysis
- Author
-
Lapadula, G, Izzo, I, Gargiulo, F, Paraninfo, G, Castelnuovo, F, Quiros-Roldan, E, Cologni, G, Ceresoli, F, Manca, N, Carosi, G, Torti, C, Lapadula G., Izzo I., Gargiulo F., Paraninfo G., Castelnuovo F., Quiros-Roldan E., Cologni G., Ceresoli F., Manca N., Carosi G., Torti C., Lapadula, G, Izzo, I, Gargiulo, F, Paraninfo, G, Castelnuovo, F, Quiros-Roldan, E, Cologni, G, Ceresoli, F, Manca, N, Carosi, G, Torti, C, Lapadula G., Izzo I., Gargiulo F., Paraninfo G., Castelnuovo F., Quiros-Roldan E., Cologni G., Ceresoli F., Manca N., Carosi G., and Torti C.
- Abstract
Continuous surveillance of HIV primary resistance mutations is highly important due to their potential clinical impact. All patients naive to antiretrovirals who had ≥1 genotypic resistance testing at the Institute of Infectious Diseases (Brescia, Northern Italy) between 2001 and 2006 were analyzed. Primary resistance mutations were defined using epidemiological and clinical criteria. Mutations were interpreted using the Stanford University Algorithm. Logistic regression analysis was used to assess possible predictors of primary resistance mutations. Among 569 patients, 11% presented ≥1 mutation. Prevalence of primary resistance mutations to nucleoside reverse-transcriptase inhibitors (NRTI), non-nucleoside reverse-transcriptase inhibitors (NNRTI), and protease inhibitors (PI) was 6.3%, 6%, and 1.6%, respectively. The most frequent mutations to NRTI were substitutions at position 215 (215Y in 3 patients, and 215 revertants in 16), 41L (13), 219Q (12), and 210W (10). Among mutations to NNRTI, 103N was found in 21 patients, while 181C, 188L, and 190A/S in 8, 3, and 4 patients, respectively. Fifty-one patients (9%) had high-to-intermediate resistance to ≥1 antiretroviral drug before starting the treatment. Regarding the new generation drugs, nine patients had intermediate resistance to etravirine, five patients had intermediate resistance to tipranavir, while five, one, and seven patients had low resistance to etravirine, tipranavir, and darunavir. Homosexuals were more likely to harbor a virus with primary resistance mutations (OR:2.68; 95% CI:1.44-5.00; P=0.002) while non-Italian nationality was protective (OR:0.38; 95% CI:0.17-0.86; P=0.020). Prevalence of primary resistance mutations suggests that genotypic resistance testing should be performed before starting treatment in naïve patients in Italy, particularly when NNRTI are prescribed. © 2008 Wiley-Liss, Inc.
- Published
- 2008
10. Screening and management of HIV-2-infected individuals in Northern Italy
- Author
-
Costarelli, S, Torti, C, Rodella, A, Baldanti, F, Paolucci, S, Lapadula, G, Manca, N, Quiros-Roldan, E, Izzo, I, Carosi, G, Costarelli S., Torti C., Rodella A., Baldanti F., Paolucci S., Lapadula G., Manca N., Quiros-Roldan E., Izzo I., Carosi G., Costarelli, S, Torti, C, Rodella, A, Baldanti, F, Paolucci, S, Lapadula, G, Manca, N, Quiros-Roldan, E, Izzo, I, Carosi, G, Costarelli S., Torti C., Rodella A., Baldanti F., Paolucci S., Lapadula G., Manca N., Quiros-Roldan E., Izzo I., and Carosi G.
- Abstract
There is a lack of updated estimates of HIV-2 infection in Italy. Moreover, lack of standardized HIV-2 viral load (VL) and drug resistance tests challenges clinical practice. Among 2941 HIV-positive patients followed in our center (Brescia, Northern Italy), 220 (7.5%) were African at the beginning of the study period. We assessed a population of 151 HIV-Ab positive patients (141 of African origin), presenting for routine blood testing from January 2006 to May 2007. Those found infected with HIV-2 started an appropriate disease management with HIV-2 VL and genotypic drug resistance testing. Sixteen of 151 (10.6%) patients were positive for HIV-2. Of those 16 patients, 14 came from Africa. Among 7 experienced patients, 1 was responding to nelfinavir and 4 to lopinavir/ritonavir-containing regimens. Two patients were failing treatment: 1 patient was switched to a saquinavir/ritonavir-containing regimen and responded. The remaining patient switched to lamivudine+atazanavir+saquinavir+ritonavir did not respond, having had previous experience to multiple ineffective drugs, resulting in a very complex HIV-2 drug-resistance pattern. Accurate screening programs and integration of virological tools must be implemented urgently, given the high prevalence of HIV-2, particularly in immigrant patients. © 2008 Mary Ann Liebert, Inc.
- Published
- 2008
11. Dideoxynucleoside HIV reverse transcriptase inhibitors and drug-related hepatotoxicity: A case report
- Author
-
Lapadula, G, Izzo, I, Costarelli, S, Cologni, G, Bercich, L, Casari, S, Gambarotti, M, Torti, C, Lapadula G., Izzo I., Costarelli S., Cologni G., Bercich L., Casari S., Gambarotti M., Torti C., Lapadula, G, Izzo, I, Costarelli, S, Cologni, G, Bercich, L, Casari, S, Gambarotti, M, Torti, C, Lapadula G., Izzo I., Costarelli S., Cologni G., Bercich L., Casari S., Gambarotti M., and Torti C.
- Abstract
This report regards the case of a 43 year-old HIV-positive woman who developed an episode of serious transaminase elevation during stavudine-including antiretroviral therapy. Diagnostic assessment ruled out hepatitis virus co-infection, alcohol abuse besides other possible causes of liver damage. No signs of lactic acidosis were present. Liver biopsy showed portal inflammatory infiltrate, spotty necrosis, vacuoles of macro- and micro-vesicular steatosis, acidophil and foamy hepatocytes degeneration with organelles clumping, poorly formed Mallory bodies and neutrophil granulocytes attraction (satellitosis). A dramatic improvement in liver function tests occurred when stavudine was discontinued and a new antiretroviral regimen with different nucleoside reverse transcriptase inhibitors was used. The importance of considering hepatotoxicity as an adverse event of HAART including stavudine, even in absence of other signs of mitochondrial toxicity should therefore be underlined. Liver biopsy may provide further important information regarding patients with severe transaminase elevation, for a better understanding of the etiology of liver damage. © 2007 Lapadula et al; licensee BioMed Central Ltd.
- Published
- 2007
12. No evidence of relation between peripheral neuropathy and presence of hemochromatosis gene mutations in HIV-1-positive patients [2]
- Author
-
Costarelli, S, Torti, C, Gatta, L, Tinelli, C, Lapadula, G, Quiros-Roldan, E, Izzo, I, Castelnuovo, F, Biasiotto, G, Arosio, P, Carosi, G, Costarelli S., Torti C., Gatta L. B., Tinelli C., Lapadula G., Quiros-Roldan E., Izzo I., Castelnuovo F., Biasiotto G., Arosio P., Carosi G., Costarelli, S, Torti, C, Gatta, L, Tinelli, C, Lapadula, G, Quiros-Roldan, E, Izzo, I, Castelnuovo, F, Biasiotto, G, Arosio, P, Carosi, G, Costarelli S., Torti C., Gatta L. B., Tinelli C., Lapadula G., Quiros-Roldan E., Izzo I., Castelnuovo F., Biasiotto G., Arosio P., and Carosi G.
- Published
- 2007
13. A magnifying glass onto renal function and serum lipid evolutions after tenofovir (TDF) and emtricitabine (FTC) in combination with atazanavir/ritonavir (ATV/r) versus efavirenz (EFV) as first‐line HAART (the INCA trial)
- Author
-
Izzo, I, Albini, L, Calabresi, A, Motta, D, Bellagamba, R, Fezza, R, Narciso, P, Sighinolfi, L, Maggi, P, Focà, E, Mendeni, M, Manili, L, Magoni, M, Carosi, G, Quiros?Roldan, E, and Torti, C
- Subjects
Efavirenz -- Dosage and administration -- Testing ,Ritonavir -- Testing -- Dosage and administration ,Highly active antiretroviral therapy -- Testing ,Atazanavir -- Dosage and administration -- Testing ,Blood lipids -- Health aspects -- Measurement ,Glomerular filtration rate -- Measurement ,Emtricitabine -- Dosage and administration -- Testing ,HIV infection -- Drug therapy ,Health - Abstract
7‐11 November 2010, Tenth International Congress on Drug Therapy in HIV Infection, Glasgow, UK, Background Measures of glomerular filtration rate (GFR) showed discordant results. CKD‐EPI creatinine formula resulted more accurate than other equations in subjects with normal or mildly decreased renal function in the [...]
- Published
- 2010
- Full Text
- View/download PDF
14. Design and shape deposition manufacturing (SDM) fabrication of a PZT-actuated tool for micromanipulation
- Author
-
Eisinberg, A, Izzo, I, Menciassi, A, Houston, K, Valdastri, P, Dario, P, Gustafsson, R, Simu, U, Johansson, S, Eisinberg, A, Izzo, I, Menciassi, A, Houston, K, Valdastri, P, Dario, P, Gustafsson, R, Simu, U, and Johansson, S
- Published
- 2005
15. Exploring the solid-state conformation and assembly of cyclic peptoid derivatives
- Author
-
Erra, L., primary, Tedesco, C., additional, Cerasuolo, G., additional, De Cola, C., additional, Nardone, B., additional, Izzo, I., additional, Vaughan, G., additional, and De Riccardis, F., additional
- Published
- 2012
- Full Text
- View/download PDF
16. Kidney transplantation in HIV-positive patients:a report of 14 cases.
- Author
-
Casari, S., Bossini, N., Albini, L., Setti, G., Valerio, F., Izzo, I., Costarelli, S., Sandrini, S., Cancarini, G., and Castelli, F.
- Subjects
KIDNEY transplantation ,HIV-positive persons - Abstract
An abstract of the article "Kidney transplantation in HIV-positive patients: a report of 14 cases," by S. Casari and colleagues is presented.
- Published
- 2012
- Full Text
- View/download PDF
17. Prospective evaluation of bone markers, parathormone and 1,25-(OH)2 vitamin D in HIV-positive patients after the initiation of tenofovir/emtricitabine with atazanavir/ritonavir or efavirenz
- Author
-
Focà Emanuele, Motta Davide, Borderi Marco, Gotti Daria, Albini Laura, Calabresi Alessandra, Izzo Ilaria, Bellagamba Rita, Narciso Pasquale, Sighinolfi Laura, Clò Alberto, Gibellini Davide, Quiros-Roldan Eugenia, Brianese Nigritella, Cesana Bruno, Re Maria, and Torti Carlo
- Subjects
HIV ,Antiretroviral therapy ,Bone turnover ,Osteoporosis ,Vitamin D ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Increased risk of fractures and osteoporosis have been associated with the use of antiretroviral drugs. There is a paucity of prospective evaluations of bone markers after the initiation of drugs currently recommended to treat HIV infection and results on the evolution of these markers are conflicting. Lastly, the effect of tenofovir on 1,25-(OH)2 vitamin D is uncertain. Methods We performed a prospective study on the evolution of bone markers, parathormone and 1,25-(OH)2 vitamin D before and after standard antiretroviral regimens. This was a sub-study of a trial conducted in antiretroviral-naïve patients randomized to tenofovir + emtricitabine in combination with either atazanavir/ritonavir (ATV/r) or efavirenz (EFV). Follow-up lasted 48 weeks. The following bone markers were analyzed: C-terminal cross-laps (CTx), osteocalcin (OC), osteoprotegerin (OPG), and receptor activator of nuclear factor κB ligand (RANKL). Mixed-factorial analysis of variance with random-coefficient general linear model was used to compare their trends over time and linear multivariable regression was performed with a backward selection method to assess predictors of their variations from baseline to week 48. Trends of parathormone and 1,25-(OH)2 vitamin D were also evaluated. Results Seventy-five patients were studied: 33 received EFV and 42 ATV/r. Significant increases were found for all markers except for RANKL. There was a significant direct association between CTx and OC increases. Multivariable analysis showed that higher glomerular filtration rate (estimated through cystatin C clearance) predicted greater OPG increase, while older age, higher HIV RNA at baseline and use of ATV/r predicted greater CTx increase. A significant increase of parathormone accompanied the evolution of the study markers. 1,25-(OH)2 vitamin D remained stable, though a seasonality variation was demonstrated. Conclusions These data demonstrate CTx increase (bone resorption marker) corresponding to OC increase (bone formation marker) early upon HAART initiation. Moreover, predictors of bone marker increases have been suggested, possibly indicating that a stricter monitoring of bone health and pro-active interventions are needed in older patients, those with higher HIV RNA, prescribed ATV/r rather than EFV, and with decreased renal function at baseline. Further studies are needed to clarify the mechanisms responsible for up-regulation of bone turnover markers, as well as to understand if and what markers are best correlated or predictive of pathological fractures.
- Published
- 2012
- Full Text
- View/download PDF
18. Maternal characteristics during pregnancy and risk factors for positive HIV RNA at delivery: a single-cohort observational study (Brescia, Northern Italy)
- Author
-
Magoni Michele, Quiros-Roldan Eugenia, Casari Salvatore, Forleo Maria A, Izzo Ilaria, Carosi Giampiero, and Torti Carlo
- Subjects
Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Detectable HIV RNA in mothers at delivery is an important risk factor for HIV transmission to newborns. Our hypothesis was that, in migrant women, the risk of detectable HIV RNA at delivery is greater owing to late HIV diagnosis. Therefore, we examined pregnant women by regional provenance and measured variables that could be associated with detectable HIV RNA at delivery. Methods A observational retrospective study was conducted from January 1999 to May 2008. Univariate and multivariable regression analyses (generalized linear models) were used, with detectable HIV RNA at delivery as dependent variable. Results The overall population comprised 154 women (46.8% migrants). Presentation was later in migrant women than Italians, as assessed by CD4-T-cell count at first contact (mean 417/mm3 versus 545/mm3, respectively; p = 0.003). Likewise, HIV diagnosis was made before pregnancy and HAART was already prescribed at the time of pregnancy in more Italians (91% and 75%, respectively) than migrants (61% and 42.8%, respectively). A subgroup of women with available HIV RNA close to term (i.e., ≤30 days before labour) was studied for risk factors of detectable HIV RNA (≥50 copies/ml) at delivery. Among 93 women, 25 (26.9%) had detectable HIV RNA. A trend toward an association between non-Italian nationality and detectable HIV RNA at delivery was demonstrated by univariate analysis (relative risk, RR = 1.86; p = 0.099). However, by multivariable regression analysis, the following factors appeared to be more important: lack of stable (i.e., ≥14 days) antiretroviral therapy at the time of HIV RNA testing (RR = 4.3; p < 0.0001), and higher CD4+ T-cell count at pregnancy (per 50/mm3, RR = 0.94; p = 0.038). Conclusions These results reinforce the importance of extensive screening for HIV infection, earlier initiation of antiretroviral therapy and stricter monitoring of pregnant women to reduce the risk of detectable HIV RNA at delivery. Public health interventions should be particularly targeted to migrant women who are frequently unaware of their HIV status at the time of pregnancy.
- Published
- 2011
- Full Text
- View/download PDF
19. Dideoxynucleoside HIV reverse transcriptase inhibitors and drug-related hepatotoxicity: a case report
- Author
-
Lapadula Giuseppe, Izzo Ilaria, Costarelli Silvia, Cologni Giuliana, Bercich Luisa, Casari Salvatore, Gambarotti Marco, and Torti Carlo
- Subjects
Medicine - Abstract
Abstract This report regards the case of a 43 year-old HIV-positive woman who developed an episode of serious transaminase elevation during stavudine-including antiretroviral therapy. Diagnostic assessment ruled out hepatitis virus co-infection, alcohol abuse besides other possible causes of liver damage. No signs of lactic acidosis were present. Liver biopsy showed portal inflammatory infiltrate, spotty necrosis, vacuoles of macro- and micro-vesicular steatosis, acidophil and foamy hepatocytes degeneration with organelles clumping, poorly formed Mallory bodies and neutrophil granulocytes attraction (satellitosis). A dramatic improvement in liver function tests occurred when stavudine was discontinued and a new antiretroviral regimen with different nucleoside reverse transcriptase inhibitors was used. The importance of considering hepatotoxicity as an adverse event of HAART including stavudine, even in absence of other signs of mitochondrial toxicity should therefore be underlined. Liver biopsy may provide further important information regarding patients with severe transaminase elevation, for a better understanding of the etiology of liver damage.
- Published
- 2007
- Full Text
- View/download PDF
20. Role of Lipophilicity in the Activity of Hexameric Cyclic Peptoid Ion Carriers
- Author
-
Massimo Tosolini, Giorgio Della Sala, Paolo Tecilla, Consiglia Tedesco, Giovanni Pierri, Irene Izzo, Muhammed Raza Shah, Rosaria Schettini, Jawad ur Rehman, Francesco De Riccardis, Schettini, R., Tosolini, M., ur Rehman, J., Shah, M. R., Pierri, G., Tedesco, C., Della Sala, G., De Riccardis, F., Tecilla, P., and Izzo, I.
- Subjects
Ionophores ,Ion carriers ,Chemistry ,Peptidomimetic ,Organic Chemistry ,Peptoid ,Ion carrier ,Combinatorial chemistry ,chemistry.chemical_compound ,Macrocycle ,Cyclic peptoids ,Macrocycles ,Peptidomimetics ,Ionophore ,Lipophilicity ,Cyclic peptoid ,Physical and Theoretical Chemistry - Abstract
Two families of hexameric cyclic peptoids decorated with linear N-alkyl and alternated N-alkyl/N-benzyl side chains (2 a–d and 3 a–c, respectively) were designed and synthesized in order to correlate their logP values (from 2.55 to 6.83) to their ionophoric activities. The present contribution confirms the general ability of hexameric cyclic peptoids to behave as efficient cation carriers, corroborates their preference for Na+ ion, among the tested alkali metals, and suggests a Na+/H+ antiport transport mechanism (rate limited by the transport of the proton) for these new ionophores. Our observations indicate that in order to attain an efficient ionophoric activity, a narrow range of liphophilicity is required (4
- Published
- 2020
21. An Entry to Enantioenriched 3,3-Disubstituted Phthalides through Asymmetric Phase-Transfer-Catalyzed γ-Alkylation
- Author
-
Rosaria Schettini, Giorgio Della Sala, Irene Izzo, Giovanni Pierri, Maria Leda Marino, Francesco De Riccardis, Marina Sicignano, Luca Bernardi, Sicignano M., Schettini R., Pierri G., Marino M.L., Izzo I., De Riccardis F., Bernardi L., and Sala G.D.
- Subjects
010405 organic chemistry ,Organic Chemistry ,Enantioselective synthesis ,Alkylation ,010402 general chemistry ,01 natural sciences ,Combinatorial chemistry ,Article ,Phthalide ,Phase-Transfer Catalysi ,0104 chemical sciences ,Catalysis ,Formal synthesis ,chemistry.chemical_compound ,chemistry ,Electrophile ,Aromatic moiety ,Enantiomer ,Asymmetric Synthesis - Abstract
A novel asymmetric phase-transfer-catalyzed γ-alkylation of phthalide 3-carboxylic esters has been developed, giving access to 3,3-disubstituted phthalide derivatives, which present a chiral quaternary γ-carbon in good to excellent yields and good enantioselectivities (74–88% ee). The enantiomeric purity could be substantially enhanced to 94–95% ee by recrystallization. Both electron-withdrawing and electron-releasing substituents are well tolerated on the phthalide core as well as on the aromatic moiety of the alkylating agent. This methodology, enabling the introduction of an unfunctionalized group at the phthalide γ-position, fully complements previously reported organocatalytic strategies involving functionalized electrophiles, thus expanding the scope of accessible 3,3-disubstituted products. The high synthetic value of this asymmetric reaction has been proven by the formal synthesis of the naturally occurring alkaloid (+)-(9S,13R)-13-hydroxyisocyclocelabenzine.
- Published
- 2020
22. Synthesis and complexing properties of cyclic benzylopeptoids-a new family of extended macrocyclic peptoids
- Author
-
Massimo Tosolini, G. Della Sala, Stefania Gambaro, F. De Riccardis, Chiara Costabile, Irene Izzo, Alessandra Meli, Domenico Milano, Paolo Tecilla, Carmen Talotta, Meli, A., Gambaro, S., Costabile, C., Talotta, C., Della Sala, G., Tecilla, Paolo, Milano, D., Tosolini, Massimo, Izzo, I., and De Riccardis, F.
- Subjects
Models, Molecular ,Annulation ,Macrocyclic Compounds ,Stereochemistry ,Supramolecular chemistry ,010402 general chemistry ,01 natural sciences ,Biochemistry ,supramolecular chemistry ,ion transport ,Peptoids ,Benzyl Compounds ,supramolecular chemistry, ion transport, cyclic peptoid ,Physical and Theoretical Chemistry ,Ion transporter ,Ionophores ,010405 organic chemistry ,Chemistry ,Sodium ,Organic Chemistry ,Combinatorial chemistry ,Affinities ,0104 chemical sciences ,cyclic peptoid ,Cyclization - Abstract
An efficient protocol for the solid-phase synthesis of six members of a new class of extended macrocyclic peptoids (based on ortho-, meta- and para-N-(methoxyethyl)aminomethyl phenylacetyl units) is described. Theoretical (DFT) and experimental (NMR) studies on the free and Na+-complexed cyclic trimers (3–5) and tetramers (6–8) demonstrate that annulation of the rigidified peptoids can generate new hosts with the ability to sequestrate one or two sodium cations with the affinities and stoichiometries defined by the macrocycle morphology. Ion transport studies have been also performed in order to better appreciate the factors promoting transmembrane cation translocation.
- Published
- 2016
23. Heterogeneity and penetration of HIV-1 non-subtype B viruses in an Italian province: public health implications
- Author
-
G. Carosi, Filippo Castelnuovo, Ilaria Izzo, Nino Manca, Carlo Torti, G. Labbate, Alessandra Calabresi, I. Diallo, Laura Monno, Eugenia Quiros-Roldan, Franco Gargiulo, Gaetano Brindicci, Giuseppe Lapadula, Torti, C, Lapadula, G, Izzo, I, Brindicci, G, Labbate, G, Quiros-Roldan, E, Diallo, I, Gargiulo, F, Castelnuovo, F, Calabresi, A, Carosi, G, Manca, N, and Monno, L
- Subjects
Adult ,Male ,medicine.medical_specialty ,Logistic Model ,Genotype ,Epidemiology ,Prevalence ,HIV Infections ,Genetic analysis ,Phylogenetics ,medicine ,Humans ,HIV Infection ,Phylogeny ,Molecular Epidemiology ,Chi-Square Distribution ,Molecular epidemiology ,biology ,Phylogenetic tree ,Sequence Analysis, DNA ,biology.organism_classification ,HIV subtype ,Virology ,Logistic Models ,Infectious Diseases ,Italy ,Lentivirus ,HIV-1 ,Female ,Human - Abstract
SUMMARYThis study assessed changes in prevalence and distribution of HIV-1 non-subtype B viruses in Italian and immigrant patients over two decades in a province in Italy. All HIV-positive patients who underwent genotypic resistance testing were selected. Prevalence of non-subtype B viruses in 3-year periods was calculated. All sequences of non-subtype B and those provided by REGA as unassigned were analysed for phylogenetic relationships. In total, 250/1563 (16%) individuals were infected with a non-subtype B virus. Prevalence increased over time, reaching a peak (31·5%) in 2004–2006. In Italian patients, the most frequent subtypes were B (92·5%) and F1 (4%). F1 subtype was also prevalent in patients from South America (13·6%); in patients of African origin, CRF02_AG (54·9%) and G (12·3%) were the most frequent. HIV-1 non-subtype B infections in Italians were mostly found in patients who acquired HIV sexually. A phylogenetic relationship between F subtypes in Italian and representative HIV-1 sequences from Brazil was found. C subtypes in Italians were phylogenetically related to subtypes circulating in Brazil. Inter-subtype recombinants were also found in the latest years. The HIV-1 epidemic in Brescia province evolved to the point where about 1/3 patients recently diagnosed harboured non-B HIV subtypes. The distribution of HIV-1 non-B subtypes in Italian patients resembled that in South American patients and phylogenetic relatedness between some Italian and South American HIV-1 strains was found. The possible epidemiological link between these two populations would have been missed by looking only at risk factors for HIV acquisition declared by patients. The evidence of inter-subtype recombinants points to significant genetic assortment. Overall our results support phylogenetic analysis as a tool for epidemiological investigation in order to guide targeted prevention strategies.
- Published
- 2010
24. C2-symmetrical sterol–polyether conjugates as highly efficient synthetic ionophores
- Author
-
Davide Garrisi, Irene Izzo, Francesco De Riccardis, Paolo Tecilla, Paolo Scrimin, Lucia Pasquato, Elvira Avallone, Gerardo Vuolo, Monica Costabile, Avallone, E., Izzo, I., Vuolo, G., Costabile, M., Garrisi, D., Pasquato, Lucia, Scrimin, P., Tecilla, Paolo, and DE RICCARDIS, F.
- Subjects
Phospholipid vesicles ,medicine.medical_treatment ,trasporto ,Organic Chemistry ,Ionophore ,Biochemistry ,Sterol ,Steroid ,ionofori ,chemistry.chemical_compound ,chimica supramolecolare ,chemistry ,Drug Discovery ,Amphiphile ,medicine ,Organic chemistry ,Ethylene glycol ,Conjugate - Abstract
A new class of artificial ionophores has been rationally designed and synthesized linking to a tetrafunctionalized l -treitol spacer two rigid hydrophobic 3β-hydroxy-5α-23,24-bisnorcholanic units and two flexible hydrophilic oligo(ethylene glycol) chains. Compounds 1a and 1b were incorporated into phospholipid vesicles and shown to facilitate Na+-transport.
- Published
- 2003
25. Prospective evaluation of bone markers, parathormone and 1,25-(OH)2 vitamin D in HIV-positive patients after the initiation of tenofovir/emtricitabine with atazanavir/ritonavir or efavirenz
- Author
-
Carlo Torti, Maria Carla Re, Ilaria Izzo, Pasquale Narciso, Laura Albini, Emanuele Focà, Laura Sighinolfi, Alessandra Calabresi, Rita Bellagamba, Davide Gibellini, Bruno Mario Cesana, Nigritella Brianese, Davide Motta, Alberto Clò, Daria Gotti, Eugenia Quiros-Roldan, Marco Borderi, Focà E, Motta D, Borderi M, Gotti D, Albini L, Calabresi A, Izzo I, Bellagamba R, Narciso P, Sighinolfi L, Clò A, Gibellini D, Quiros-Roldan E, Brianese N, Cesana BM, Re MC, and Torti C.
- Subjects
Oncology ,Adult ,Male ,medicine.medical_specialty ,Efavirenz ,Anti-HIV Agents ,Osteoporosis ,Parathyroid hormone ,HIV Infections ,Emtricitabine ,OSTEOPOROSIS ,bone ,Bone and Bones ,Bone remodeling ,lcsh:Infectious and parasitic diseases ,chemistry.chemical_compound ,ANTIRETROVIRAL THERAPY ,Internal medicine ,Antiretroviral Therapy, Highly Active ,BONE TURNOVER ,Vitamin D and neurology ,Medicine ,Humans ,lcsh:RC109-216 ,Prospective Studies ,Vitamin D ,Prospective cohort study ,business.industry ,HIV ,Middle Aged ,medicine.disease ,Ergocalciferol ,Infectious Diseases ,chemistry ,Parathyroid Hormone ,Immunology ,Ergocalciferols ,Female ,business ,Biomarkers ,medicine.drug ,Research Article - Abstract
Background Increased risk of fractures and osteoporosis have been associated with the use of antiretroviral drugs. There is a paucity of prospective evaluations of bone markers after the initiation of drugs currently recommended to treat HIV infection and results on the evolution of these markers are conflicting. Lastly, the effect of tenofovir on 1,25-(OH)2 vitamin D is uncertain. Methods We performed a prospective study on the evolution of bone markers, parathormone and 1,25-(OH)2 vitamin D before and after standard antiretroviral regimens. This was a sub-study of a trial conducted in antiretroviral-naïve patients randomized to tenofovir + emtricitabine in combination with either atazanavir/ritonavir (ATV/r) or efavirenz (EFV). Follow-up lasted 48 weeks. The following bone markers were analyzed: C-terminal cross-laps (CTx), osteocalcin (OC), osteoprotegerin (OPG), and receptor activator of nuclear factor κB ligand (RANKL). Mixed-factorial analysis of variance with random-coefficient general linear model was used to compare their trends over time and linear multivariable regression was performed with a backward selection method to assess predictors of their variations from baseline to week 48. Trends of parathormone and 1,25-(OH)2 vitamin D were also evaluated. Results Seventy-five patients were studied: 33 received EFV and 42 ATV/r. Significant increases were found for all markers except for RANKL. There was a significant direct association between CTx and OC increases. Multivariable analysis showed that higher glomerular filtration rate (estimated through cystatin C clearance) predicted greater OPG increase, while older age, higher HIV RNA at baseline and use of ATV/r predicted greater CTx increase. A significant increase of parathormone accompanied the evolution of the study markers. 1,25-(OH)2 vitamin D remained stable, though a seasonality variation was demonstrated. Conclusions These data demonstrate CTx increase (bone resorption marker) corresponding to OC increase (bone formation marker) early upon HAART initiation. Moreover, predictors of bone marker increases have been suggested, possibly indicating that a stricter monitoring of bone health and pro-active interventions are needed in older patients, those with higher HIV RNA, prescribed ATV/r rather than EFV, and with decreased renal function at baseline. Further studies are needed to clarify the mechanisms responsible for up-regulation of bone turnover markers, as well as to understand if and what markers are best correlated or predictive of pathological fractures.
- Published
- 2012
26. A randomized, pilot trial to evaluate glomerular filtration rate by creatinine or cystatin C in naïve HIV-infected patients after tenofovir/emtricitabine in combination with atazanavir/ritonavir or efavirenz
- Author
-
Luigi Manili, Paolo Maggi, Rita Bellagamba, Eugenia Quiros-Roldan, Laura Sighinolfi, Laura Albini, Emanuele Focà, Rita Fezza, Davide Motta, Daria Gotti, Pasquale Narciso, Giovanni Guaraldi, Giuseppe Lapadula, Alessandra Calabresi, Ilaria Izzo, Carlo Torti, Bruno Mario Cesana, Albini, L, Cesana, Bm, Motta, D, Focà, E, Gotti, D, Calabresi, A, Izzo, I, Bellagamba, R, Fezza, R, Narciso, P, Sighinolfi, L, Maggi, P, Quiros-Roldan, E, Manili, L, Guaraldi, G, Lapadula, G, Torti, C, Cesana, B, and Foca, E
- Subjects
Cyclopropanes ,Male ,Pyridines ,Pyridine ,HIV Infections ,Pilot Projects ,urologic and male genital diseases ,Deoxycytidine ,chemistry.chemical_compound ,Organophosphonate ,Emtricitabine ,Pharmacology (medical) ,HIV Infection ,Alkyne ,HIV ,glomerular filtration rate ,HAART ,creatinine ,cystatin C ,biology ,Cyclopropane ,Middle Aged ,female genital diseases and pregnancy complications ,Infectious Diseases ,Alkynes ,Creatinine ,Oligopeptide ,Female ,Oligopeptides ,medicine.drug ,Human ,Glomerular Filtration Rate ,Benzoxazine ,Adult ,medicine.medical_specialty ,Efavirenz ,Anti-HIV Agents ,antiretroviral therapy ,Atazanavir Sulfate ,Urology ,Organophosphonates ,Renal function ,medicine ,Humans ,Pilot Project ,Cystatin C ,Tenofovir ,Ritonavir ,business.industry ,Adenine ,Anti-HIV Agent ,medicine.disease ,Atazanavir ,Benzoxazines ,chemistry ,biology.protein ,business ,Kidney disease - Abstract
Background: Glomerular filtration rate (GFR) estimated by Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation based on creatinine or cystatine C may be more accurate methods especially in patients without chronic kidney disease. There is lack of data on GFR estimated by these methods in patients on highly active antiretroviral therapy. Methods: Antiretroviral-naive HIV-infected patients were randomized to tenofovir/emtricitabine in association with atazanavir/ritonavir (ATV/r) or efavirenz (EFV) Patients had to have an actual creatinine clearance >50 mL/minute (24-hour urine collection) and were followed for 48 weeks. RESULTS: Ninety-one patients (48 ATV/r, 43 EFV) were recruited. Using the CKD-EPI creatinine formula, there was a significant decrease in GFR up to week 48 in patients receiving ATV/r (4.9 mL/minute/m, P = 0.02) compared with a not statistically significant increment in patients prescribed EFV. Using the cystatin C-based equation, we found greater decrease in GFR in both arms, although, in the EFV arm, the decrease was not statistically significant (5.8 mL/minute/m, P = 0.92). At multivariable analysis, ATV/r was a significant predictor of greater decrease in estimated glomerular filtration rate (eGFR) (P = 0.0046) only with CKD-EPI creatinine. Conclusions: ATV/r plus tenofovir caused greater GFR decreases compared with EFV. The evaluation of eGFR by cystatin C confirmed this result, but this method seemed to be more stringent, probably precluding the possibility to detect a significant difference in the pattern of eGFR evolution between the two arms over time. More studies are needed to understand the clinical relevance of these alterations and whether cystatin C is a more appropriate method for monitoring GFR in clinical practice.
- Published
- 2012
27. Design, synthesis and antimicrobial properties of non-hemolytic cationic alfa-cyclopeptoids
- Author
-
Monica Benincasa, Renato Gennaro, Francesco De Riccardis, Irene Izzo, Daniela Comegna, Comegna, D., Benincasa, Monica, Gennaro, Renato, Izzo, I., and De Riccardis, F.
- Subjects
Antifungal Agents ,Cell Membrane Permeability ,Erythrocytes ,Solid-phase synthesis ,Peptidomimetic ,Stereochemistry ,Clinical Biochemistry ,Pharmaceutical Science ,Microbial Sensitivity Tests ,Biochemistry ,Hemolysis ,Peptides, Cyclic ,Genus Candida ,chemistry.chemical_compound ,Structure-Activity Relationship ,Antibiotics ,Cations ,Drug Discovery ,Humans ,Cyclic peptoid ,Propidium iodide ,Candida albicans ,Molecular Biology ,biology ,Chemistry ,Organic Chemistry ,Cationic polymerization ,Antibiotic ,Antimicrobial ,biology.organism_classification ,In vitro ,Anti-Bacterial Agents ,Design synthesis ,Drug Design ,Cyclic peptoids ,Molecular Medicine - Abstract
The synthesis and screening of neutral and cationic, linear and cyclic peptoids (N-alkylglycine peptidomimetics) is described. Structure-activity relationship studies show that the in vitro activities of the tested peptoids depend on both cyclization and decoration with cationic groups. The most powerful N-lysine cyclopeptoid derivatives showed good antifungal activity against Candida albicans (ATCC90029 and L21) and Candida famata (SA550, Amph B-resistant) and low hemolytic activity. The effects of the cyclic peptoids on membrane permeabilization were evaluated by the propidium iodide exclusion assay.
- Published
- 2010
28. Risk of early virological failure of once-daily tenofovir-emtricitabine plus twice-daily nevirapine in antiretroviral therapy-naive HIV-infected patients
- Author
-
Giuseppe Lapadula, Giampiero Carosi, Silvia Costarelli, Eugenia Quiros-Roldan, Carlo Torti, Ilaria Izzo, Alessandra Calabresi, Lapadula, G, Costarelli, S, Quiros-Roldan, E, Calabresi, A, Izzo, I, Carosi, G, and Torti, C
- Subjects
Microbiology (medical) ,Adult ,Male ,Nevirapine ,Tenofovir ,Anti-HIV Agents ,Pyridines ,Pyridine ,Atazanavir Sulfate ,Organophosphonates ,HIV Infections ,Emtricitabine ,Deoxycytidine ,chemistry.chemical_compound ,Organophosphonate ,Medicine ,Hiv infected patients ,Humans ,HIV Infection ,Aged ,business.industry ,Adenine ,Anti-HIV Agent ,Middle Aged ,Viral Load ,Virology ,Antiretroviral therapy ,Infectious Diseases ,Treatment Outcome ,chemistry ,Oligopeptide ,RNA, Viral ,Drug Therapy, Combination ,Female ,business ,Viral load ,Oligopeptides ,Human ,medicine.drug - Published
- 2008
29. Artificial anion transporters in bilayer membranes
- Author
-
Irene Izzo, Sabina Licen, Paolo Tecilla, Francesco De Riccardis, Licen, Sabina, DE RICCARDIS, F, Izzo, I, and Tecilla, Paolo
- Subjects
Models, Molecular ,Cell Membrane Permeability ,Protein Conformation ,Anion Transport Proteins ,Lipid Bilayers ,Supramolecular chemistry ,Design elements and principles ,Nanotechnology ,Ion ,Structure-Activity Relationship ,ionofori ,Drug Discovery ,Animals ,Humans ,Technology, Pharmaceutical ,Phospholipids ,Ion channel ,Drug Carriers ,Ion Transport ,Ionophores ,Molecular Structure ,Chemistry ,Bilayer ,Cell Membrane ,trasporto ,Transporter ,Membrane ,chimica supramolecolare ,Drug Design ,Function (biology) - Abstract
Anion transport across phospholipid membrane is a typical supramolecular function involving dynamic recognition of the substrate during the whole translocation process. Supramolecular chemists, taking inspiration by the natural anion transporters, have designed artificial systems able to mimic, at the functional level, several features of the natural ion channels. The scope of this research is twofold: on one hand to get insight on the molecular basis of recognition and transport, and on the other hand to get control of the biomedical relevant processes. The present review focuses on the synthetic systems promoting anion transport, covering both artificial channels and carriers that operate in phospholipid membrane. The design principles of such systems will be discussed together with the potential biomedical applications.
- Published
- 2008
30. Cationic calix[4]arenes as anion-selective ionophores
- Author
-
Irene Izzo, Sabina Licen, Giuseppina Autore, Stefania Marzocco, Paolo Tecilla, Francesco De Riccardis, Nakia Maulucci, Izzo, I, Licen, Sabina, Maulucci, N, Autore, G, Marzocco, S, Tecilla, Paolo, and DE RICCARDIS, F.
- Subjects
Stereochemistry ,Catalysis ,Ion ,Mice ,ionofori ,Chlorides ,Phenols ,Cell Line, Tumor ,Materials Chemistry ,medicine ,Macrophage ,Animals ,Cell Proliferation ,Ionophores ,Chemistry ,Monocyte ,Macrophages ,trasporto ,Metals and Alloys ,Cationic polymerization ,General Chemistry ,Highly selective ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,medicine.anatomical_structure ,chimica supramolecolare ,Symporter ,Cancer cell ,Halogen ,Ceramics and Composites ,Calixarenes - Abstract
1,3-Alternate cationic calix[4] arene 1 proved highly selective for proton/ halogens symport transport and showed antiproliferative activity against murine monocyte/macrophage J774.A1 cancer cells.
- Published
- 2008
31. Dideoxynucleoside HIV reverse transcriptase inhibitors and drug-related hepatotoxicity: a case report
- Author
-
Giuseppe Lapadula, Luisa Bercich, Carlo Torti, Ilaria Izzo, Silvia Costarelli, Marco Gambarotti, Giuliana Cologni, Salvatore Casari, Lapadula, G, Izzo, I, Costarelli, S, Cologni, G, Bercich, L, Casari, S, Gambarotti, M, and Torti, C
- Subjects
Medicine(all) ,medicine.medical_specialty ,Pathology ,medicine.diagnostic_test ,business.industry ,lcsh:R ,Stavudine ,lcsh:Medicine ,Case Report ,General Medicine ,medicine.disease ,Gastroenterology ,Mitochondrial toxicity ,Liver biopsy ,Internal medicine ,Lactic acidosis ,medicine ,Mallory body ,Steatosis ,Liver function tests ,business ,hepatotoxicity, didanosine ,Didanosine ,medicine.drug - Abstract
This report regards the case of a 43 year-old HIV-positive woman who developed an episode of serious transaminase elevation during stavudine-including antiretroviral therapy. Diagnostic assessment ruled out hepatitis virus co-infection, alcohol abuse besides other possible causes of liver damage. No signs of lactic acidosis were present. Liver biopsy showed portal inflammatory infiltrate, spotty necrosis, vacuoles of macro- and micro-vesicular steatosis, acidophil and foamy hepatocytes degeneration with organelles clumping, poorly formed Mallory bodies and neutrophil granulocytes attraction (satellitosis). A dramatic improvement in liver function tests occurred when stavudine was discontinued and a new antiretroviral regimen with different nucleoside reverse transcriptase inhibitors was used. The importance of considering hepatotoxicity as an adverse event of HAART including stavudine, even in absence of other signs of mitochondrial toxicity should therefore be underlined. Liver biopsy may provide further important information regarding patients with severe transaminase elevation, for a better understanding of the etiology of liver damage.
- Published
- 2007
32. On the importance of the pore inner cavity for the ionophoric activity of 1,3-alternate calix[4]arene/steroid conjugates
- Author
-
Irene Izzo, Nakia Maulucci, Lidia Fanfoni, Francesco De Riccardis, Cristina Martone, Paolo Tecilla, Agostino Casapullo, Izzo, I, Maulucci, N, Martone, C, Casapullo, A, Fanfoni, Lidia, Tecilla, Paolo, and DE RICCARDIS, F.
- Subjects
Morphology (linguistics) ,Chemistry ,Stereochemistry ,medicine.medical_treatment ,Organic Chemistry ,trasporto ,Cholic acid ,Conductance ,Biochemistry ,Steroid ,Ionophoric Activity ,chemistry.chemical_compound ,ionofori ,chimica supramolecolare ,Drug Discovery ,medicine ,Conjugate - Abstract
1,3-Alternate calix[4]arenes, decorated with four nonpolar 'all-trans' tetracyclic nuclei and cation-stabilizing beta-methoxyethoxy appendages, were synthesized from commercially available starting materials and through straightforward functional groups transformations/couplings. Their Na+-transport activities, when compared with those exerted by the known conformationally-rigidified 1,3-alternate calix[4]-arene AB/cis cholic acid conjugates, suggest that the cation conductance is related to the morphology of the pendant steroids.
- Published
- 2006
33. Steroid-based Head to Tail Amphiphiles as Effective Iono- and Protonophores
- Author
-
Paolo Tecilla, Irene Izzo, Elena Cressina, Francesco De Riccardis, Elvira Avallone, Massimo Fregonese, Avallone, E., Cressina, E., Fregonese, M., Tecilla, Paolo, Izzo, I., and DE RICCARDIS, F.
- Subjects
Stereochemistry ,medicine.medical_treatment ,Sodium ,trasporto ,Organic Chemistry ,chemistry.chemical_element ,Polyene ,Biochemistry ,Fluorescence spectroscopy ,Steroid ,ionofori ,chemistry.chemical_compound ,Membrane ,chimica supramolecolare ,chemistry ,Drug Discovery ,medicine ,Side chain ,Stereoselectivity ,Conjugate - Abstract
The synthesis of five steroid-oligo(ethyleneglycol) conjugates ( 1 – 5 ) has been accomplished starting from commercially available epi -androsterone ( 8 ) and known 3β-[( tert -butyldiphenylsilyl)oxy]-5α-23,24-bisnorchol-16-en-6α,7β,22-triol ( 27 ). The synthetic strategy was based on a convergent approach including stereoselective C-17 side chains construction and standard coupling reactions. The activities of the head-to-tail amphiphiles, once incorporated in 95:5 egg PC/PG vesicular membranes, have been assessed by direct determination of transported species by NMR techniques ( 23 Na + ) and fluorescence spectroscopy (H + ). The sodium and proton transmembrane transport was compared to those evaluated for the polyene macrolide antibiotic amphotericin B and those shown by the known related C 2 -symmetric sterol-polyether conjugates 6 and 7 .
- Published
- 2005
34. Synthesis of a Transmembrane Ionophore Based on a C2 Symmetric Polyhydroxysteroid Derivative
- Author
-
Loredana Savignano, Marcello Di Filippo, Francesco De Riccardis, Paolo Tecilla, Irene Izzo, DI FILIPPO, M., Izzo, I., Savignano, L., Tecilla, Paolo, and DE RICCARDIS, F.
- Subjects
Stereochemistry ,Organic Chemistry ,trasporto ,Ionophore ,Regioselectivity ,Biochemistry ,Transmembrane protein ,chemistry.chemical_compound ,ionofori ,Stereospecificity ,chemistry ,chimica supramolecolare ,Yield (chemistry) ,Drug Discovery ,Surface modification ,Ene reaction ,Derivative (chemistry) - Abstract
The synthesis of the C-2-symmetric bis-(20S)-5alpha-23,24-bisnorchol-16-en-3beta,6alpha,7beta-triol-22-terephthaloate (1), active as Na+-transporting transmembrane channel, has been achieved in 16 steps (10% overall yield) starting from the commercially available androst-5-en-3beta-ol-17-one (3). The straightforward stereospecific functionalization of the side-chain, via the 'ene' reaction, and the successful regioselective terephthaloylation of the C-22 hydroxy group, illustrate the efficiency of the synthetic strategy.
- Published
- 2003
35. An artificial ionophore based on a polyhydroxylated steroid dimer
- Author
-
Davide Garrisi, Irene Izzo, Francesco De Riccardis, Paolo Tecilla, Marcello Di Filippo, Paolo Scrimin, Fabrizio Mancin, Lucia Pasquato, DI FILIPPO, M., Garrisi, D., Izzo, I., Mancin, F., Pasquato, Lucia, DE RICCARDIS, F., Scrimin, P., and Tecilla, Paolo
- Subjects
Stereochemistry ,Dimer ,medicine.medical_treatment ,Lipid Bilayers ,Ionophore ,Hydroxylation ,Catalysis ,Steroid ,ionofori ,chemistry.chemical_compound ,Materials Chemistry ,medicine ,Organic chemistry ,Ionophores ,trasporto ,Metals and Alloys ,General Medicine ,General Chemistry ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Kinetics ,chimica supramolecolare ,chemistry ,Ceramics and Composites ,Sodium Isotopes ,Steroids ,Dimerization - Abstract
The Na+ transporting properties of the first member of a new class of artificial ionophores, based on a C-2-symmetric polyhydroxylated steroid dimer, are described.
- Published
- 2002
36. Calix[4]arene-cholic acid conjugates: a new class of efficient synthetic ionophores
- Author
-
Irene Izzo, Elena Cressina, Agostino Casapullo, Paolo Tecilla, Francesco De Riccardis, Cinzia Barbara Botta, Nakia Maulucci, Massimo Fregonese, Maulucci, N., DE RICCARDIS, F., Botta, C. B., Casapullo, A., Cressina, E., Fregonese, M., Tecilla, Paolo, and Izzo, I.
- Subjects
Molecular Conformation ,Reductive amination ,Catalysis ,chemistry.chemical_compound ,Phenols ,Amphiphile ,Materials Chemistry ,Organic chemistry ,sensori ,Ionophores ,Sodium ,trasporto ,Metals and Alloys ,Cholic acid ,Cholic Acids ,Stereoisomerism ,General Medicine ,General Chemistry ,Hydrogen-Ion Concentration ,Combinatorial chemistry ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,chemistry ,Ceramics and Composites ,chimica supramolecolare ,Calixarenes ,Conjugate - Abstract
The synthesis of a new class of amphiphilic calix[ 4] arene-based ionophores, relying on direct reductive amination as a key step, and the evaluation of their H+ and Na+ transporting properties is described.
- Published
- 2005
37. Flexible and Convergent Enantioselective Total Synthesis of ( R )-Juglanaloids A and B: Two Phthalide Spiro Alkaloids with Potential Alzheimer's Disease Inhibitory Activity.
- Author
-
Khettar I, Sinibaldi A, Schettini R, Gorini G, Siddiqa A, Litta AD, De Riccardis F, Izzo I, and Sala GD
- Subjects
- Stereoisomerism, Molecular Structure, Benzofurans chemistry, Benzofurans chemical synthesis, Benzofurans pharmacology, Alzheimer Disease drug therapy, Spiro Compounds chemistry, Spiro Compounds chemical synthesis, Spiro Compounds pharmacology, Alkaloids chemistry, Alkaloids chemical synthesis, Alkaloids pharmacology
- Abstract
Juglanaloids A and B are recently isolated natural products characterized by an unprecedented spiro bicyclic isobenzofuranone-tetrahydrobenzazepinone framework and a promising antiamyloid activity. Here reported is a straightforward convergent total synthesis of these natural products, which were obtained in high enantiomeric purity (94% and >99% ee for juglanaloids A and B, respectively) through an eight-step longest linear sequence, based on an efficient and reliable enantioselective phase-transfer-catalyzed alkylation step. Considering the interesting biological activity of juglanaloids, this convenient, highly enantioselective, flexible, and predictable synthetic strategy promises to be a powerful tool for accessing potentially bioactive spiro bicyclic phthalide-tetrahydrobenzazepinone derivatives.
- Published
- 2024
- Full Text
- View/download PDF
38. Skin Toxicities Associated with Botulin Toxin Injection for Aesthetic Procedures: Data from the European Spontaneous Reporting System.
- Author
-
Nicoletti MM, Anatriello A, Liguori V, Cantone A, di Mauro G, Izzo I, Lettera N, Della Ragione JM, Campitiello MR, Cosenza V, and Scavone C
- Abstract
Botulinum toxin is a protein deriving from the bacteria Clostridium botulinum and it is widely used for the treatment of a variety of muscle hyperactivity syndromes and for cosmetic indications. Having a long-lasting effect, Botulinum toxin type A (BTA) is one of the most botulin toxin products used. Even if BTA has shown benefits in reducing the vertical lines between the eyebrows, Adverse Drug Reactions (ADRs) have been experienced as well, of which the most common ones are headache and drooping eyelids. In addition, since other local and systemic risks have been identified, a non-interventional post-authorization safety study (PASS) has been started. The aim of the present study was to report cases of skin toxicity associated with this drug, considering Individual Case Safety Reports (ICSRs) existing on the Eudravigilance website. Among 1464 ICSRs sent to the EV database, 718 ICSRs, including 5154 PTs, reported BTA as a suspected drug associated with cutaneous toxicity. The majority of patients experiencing BTA-induced skin toxicity were female (92.1%) belonging mostly to the age group of 18-64 years. The most serious criteria, when reported, were "Other Medically Important Condition" and "Caused/prolonged hospitalization", although the outcome was mainly reported as "Unknown". The most reported PTs, related to skin disorders, were: "Erythema", "Rash", "Pruritus", "Urticaria", "Swelling face", "Brow ptosis", "Eyelid ptosis", "Injection site pain", and "Angioedema". Considering that in most ICSRs, ADRs related to skin disorders were symptoms of hypersensitivity reactions which in some conditions could be life-threatening, further studies are required to better define the safety profile of BTA used for aesthetic procedures.
- Published
- 2023
- Full Text
- View/download PDF
39. The Antimicrobial, Antibiofilm and Anti-Inflammatory Activities of P13#1, a Cathelicidin-like Achiral Peptoid.
- Author
-
Cafaro V, Bosso A, Di Nardo I, D'Amato A, Izzo I, De Riccardis F, Siepi M, Culurciello R, D'Urzo N, Chiarot E, Torre A, Pizzo E, Merola M, and Notomista E
- Abstract
Cationic antimicrobial peptides (CAMPs) are powerful molecules with antimicrobial, antibiofilm and endotoxin-scavenging activities. These properties make CAMPs very attractive drugs in the face of the rapid increase in multidrug-resistant (MDR) pathogens, but they are limited by their susceptibility to proteolytic degradation. An intriguing solution to this issue could be the development of functional mimics of CAMPs with structures that enable the evasion of proteases. Peptoids ( N -substituted glycine oligomers) are an important class of peptidomimetics with interesting benefits: easy synthetic access, intrinsic proteolytic stability and promising bioactivities. Here, we report the characterization of P13#1, a 13-residue peptoid specifically designed to mimic cathelicidins, the best-known and most widespread family of CAMPs. P13#1 showed all the biological activities typically associated with cathelicidins: bactericidal activity over a wide spectrum of strains, including several ESKAPE pathogens; the ability to act in combination with different classes of conventional antibiotics; antibiofilm activity against preformed biofilms of Pseudomonas aeruginosa , comparable to that of human cathelicidin LL-37; limited toxicity; and an ability to inhibit LPS-induced proinflammatory effects which is comparable to that of "the last resource" antibiotic colistin. We further studied the interaction of P13#1 with SDS, LPSs and bacterial cells by using a fluorescent version of P13#1. Finally, in a subcutaneous infection mouse model, it showed antimicrobial and anti-inflammatory activities comparable to ampicillin and gentamicin without apparent toxicity. The collected data indicate that P13#1 is an excellent candidate for the formulation of new antimicrobial therapies.
- Published
- 2023
- Full Text
- View/download PDF
40. Which is the top player for the cardiovascular safety? ibrutinib vs. obinutuzumab in CLL.
- Author
-
Mascolo A, Di Napoli R, Balzano N, D'Alessio E, Izzo I, Rossi F, Paolisso G, Capuano A, and Sportiello L
- Abstract
Introduction: Ibrutinib, a Bruton's tyrosine kinase (BTK) inhibitor, is authorized for the treatment of chronic lymphocytic leukemia (CLL). This study aims to explore the cardiac safety profile of ibrutinib in comparison with obinutuzumab. Methods: A retrospective pharmacovigilance study was conducted on data retrieved from the European pharmacovigilance database (Eudravigilance) from 1 January 2014 to 30 September 2022. To compare the reporting frequency of cardiovascular events among ibrutinib, obinutuzumab, and the combination of both. Results: A total of 2 291 CV cases were retrieved, of which 1965 were related to ibrutinib, 312 to obinutuzumab, and 14 to the combination. Most cases referred to patients aged ≥65 years ( N = 1,454; 63.47%) and male ( N = 1,497; 65.34%). Most cases were serious ( N = 2,131; 93.02%). The most reported events were: atrial fibrillation ( N = 913; 31.31%) and haemorrhage ( N = 201; 6.89%). A higher reporting frequency of CV events was found when ibrutinib was compared to obinutuzumab (ROR, 3.22; 95% CI, 2.89-3.60) or combination (ROR, 1.77; 95% CI, 1.11-2.83). A lower reporting was observed when obinutuzumab was compared to combination (ROR, 0.55; 95% CI, 0.34-0.88). Discussion: A higher reporting frequency of CV events in patients exposed to ibrutinib in comparison with obinutuzumab was found. Further studies are needed to better explore the safety of ibrutinib., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Mascolo, Di Napoli, Balzano, D’Alessio, Izzo, Rossi, Paolisso, Capuano and Sportiello.)
- Published
- 2023
- Full Text
- View/download PDF
41. Water-Soluble Chiral Cyclic Peptoids and Their Sodium and Gadolinium Complexes: Study of Conformational and Relaxometric Properties.
- Author
-
D'Amato A, Jiang L, Della Sala G, Kirshenbaum K, Costabile C, Furlan C, Gianolio E, Izzo I, and De Riccardis F
- Abstract
Cyclic peptoids are macrocyclic oligomers of N-substituted glycines with specific folding abilities and excellent metal binding properties. In this work, we show how strategic positioning of chiral ( S )- and ( R )-(1-carboxyethyl)glycine units influences the conformational stability of water-soluble macrocyclic peptoids as sodium complexes. The reported results are based on nuclear magnetic resonance spectroscopy, extensive computational studies, and X-ray diffraction analysis using single crystals grown from aqueous solutions. The studies include
1 H relaxometric investigations of hexameric cyclic peptoids in the presence of the Gd3+ ion to assess their thermodynamic stabilities and relaxivities.- Published
- 2023
- Full Text
- View/download PDF
42. COVID-19 Vaccines and Atrial Fibrillation: Analysis of the Post-Marketing Pharmacovigilance European Database.
- Author
-
Ruggiero R, Donniacuo M, Mascolo A, Gaio M, Cappetta D, Rafaniello C, Docimo G, Riccardi C, Izzo I, Ruggiero D, Paolisso G, Rossi F, De Angelis A, and Capuano A
- Abstract
Atrial fibrillation (AF) has been described in COVID-19 patients. Recently, some case reports and US pharmacovigilance analyses described AF onset as a rare adverse event following COVID-19 vaccination. The possible correlation is unclear. We systematically analyzed the reports of AF related to COVID-19 vaccines collected in the European pharmacovigilance database, EudraVigilance (EV), from 2020 to November 2022. We carried out descriptive and disproportionality analyses. Moreover, we performed a sensitivity analysis, excluding the reports describing other possible alternative AF causes (pericarditis, myocarditis, COVID-19, or other drugs that may cause/exacerbate AF). Overall, we retrieved 6226 reports, which represented only 0.3% of all those related to COVID-19 vaccines collected in EV during our study period. AF reports mainly referred to adults (in particular, >65 years old), with an equal distribution in sex. Reports were mainly related to tozinameran (54.04%), elasomeran (28.3%), and ChAdOx1-S (14.32%). The reported AF required patient hospitalization in 35% of cases and resulted in a life-threatening condition in 10% of cases. The AF duration (when reported) was highly variable, but the majority of the events had a short duration (moda = 24 h). Although an increased frequency of AF reporting with mRNA vaccines emerges from our study, other investigations are required to investigate the possible correlation between COVID-19 vaccination and the rare AF occurrence.
- Published
- 2023
- Full Text
- View/download PDF
43. Reduced probability of improving viro-immunological state in subjects with vertical transmission of HIV reaching adult age: A multicenter retrospective cohort study.
- Author
-
Pennati F, Calza S, Di Biagio A, Mussini C, Rusconi S, Bonora S, Borghetti A, Quiros-Roldan E, Sarteschi G, Menozzi M, Ferrara M, Celotti A, Ciccullo A, Giacomet V, Izzo I, Dotta L, Badolato R, Castelli F, and Focà E
- Subjects
- Adolescent, Humans, Young Adult, HIV-1, Probability, Retrospective Studies, RNA, Infectious Disease Transmission, Vertical, HIV Infections epidemiology
- Abstract
Introduction: Young adults with vertical transmission (VT) of human immunodeficiency virus (HIV) represent a fragile population. This study evaluates factors associated with viro-immunological outcome of these patients., Methods: We performed a multicenter study including HIV-infected subjects with VT ≥ 18 years old from six Italian clinics. Subjects were observed from birth to death, lost to follow-up, or last visit until December 31, 2019. Condition of "optimal viro-immunological status" (OS) was defined as the simultaneous presence of HIV ribonucleic acid (RNA) < 50 copies/mL, CD4+ > 500 cells/mm
3 , and CD4+/CD8+ ratio ≥ 1., Results: A total of 126 subjects were enrolled. At 18 years of age, 52/126 (44.4%) had HIV-RNA > 50 copies/mL, 47/126 (38.2%) had CD4+ < 500/mm3 , and 78/126 (67.2%) had CD4+/CD8+ < 1; 28 subjects (23.7%) presented in the condition of OS. Having a CD4+/CD8+ ratio ≥ 1 at 18 years of age was related with an increased probability of shift from suboptimal viro-immunological status (SOS) to OS (HR: 7.7, 95% confidence interval [CI]: 4.23-14.04), and a reduced risk of shift from the OS to the SOS (HR: 0.49, 95% CI: 0.26-0.92). Acquired immunodeficiency syndrome (AIDS) diagnosis significantly reduced the probability of shift from a viro-immunological SOS to OS (HR: 0.09, 95% CI: 0.03-0.30). Subjects who had not achieved an OS at 18 years of age had an increased risk of discontinuation of combination antiretroviral therapy (cART, p = .019)., Conclusions: Only a small proportion of subjects with VT of HIV reached the adult age with "OS". Transition to the adult care with a compromised viro-immunological condition represents a negative driver for future optimal infection control, with a higher risk of discontinuation of cART and a reduced probability to improve the immunological status later in the years., (© 2023 The Authors. Immunity, Inflammation and Disease published by John Wiley & Sons Ltd.)- Published
- 2023
- Full Text
- View/download PDF
44. SARS-CoV-2 Infection and Vaccination Coverage among Fragile Populations in a Local Health Area of Northern Italy.
- Author
-
Maifredi G, Izzo I, Gasparotti C, Sileo CV, Hiv-CoV Group, Castelli F, and Quiros-Roldan E
- Abstract
Italy was dramatically hit by the COVID-19 pandemic, and the province of Brescia was one of the epicenters of the outbreak. Furthermore, Brescia has one of the highest incidences of people living with HIV (PLWH) and a substantial presence of migrants. We conducted a retrospective cohort study involving all citizens connected to the Brescia Health Protection Agency, assessing the SARS-CoV-2 burden, COVID-19 prevalence, and vaccination coverage. A total of 1,004,210 persons were included, 3817 PLWH and 134,492 foreigners. SARS-CoV-2 infection, hospitalizations and death were more frequent among Italians than foreigners. SARS-CoV-2 infections and deaths were more frequent in HIV-uninfected people than in PLWH. PLWH and foreigners were less likely to have a SARS-CoV-2 diagnosis compared to HIV-negative patients. Migrants were more likely to be hospitalized but had a lower risk of death compared to HIV-negative patients. Regarding vaccination, 89.1% of the population received at least one dose of vaccine, while 70.4% of the Italian citizens and 36.3% of the foreigner subjects received three doses of vaccine. Foreigners showed a lower risk of being diagnosed with SARS-CoV-2 but a higher risk of complications. HIV infection was not associated with a higher risk of SARS-CoV-2 severe manifestations compared to the general population. COVID-19 vaccine hesitancy was not different between PLWH and HIV uninfected people, but foreigners were more hesitant.
- Published
- 2022
- Full Text
- View/download PDF
45. Immunological Evolution of a Cohort of HIV-2 Infected Patients: Peculiarities of an Underestimated Infection.
- Author
-
Fumarola B, Calza S, Renzetti S, El Hamad I, Pezzoli MC, Izzo I, Degli Antoni M, Chiesa A, De Francesco M, Quiros-Roldan E, Caruso A, Castelli F, and Focà E
- Abstract
Background: Human Immunodeficiency Virus type 2 (HIV-2) affects a minority of patients in Italy; nevertheless, the increasing migratory flow from higher prevalence areas led to the spread of this virus into our Country. We evaluate clinical, viro-immunological, and therapeutic characteristics of patients with HIV-2 infection and HIV-1/HIV-2 dual-infection and the early treatment impact on overall survival and incidence of AIDS events., Methods: We retrospectively analyzed all HIV-2, and HIV-1/HIV-2 positive patients followed in a large Italian clinic from January 1987 to December 2020. We recorded demographic, viro-immunological, clinical, and therapeutic data. We performed a descriptive analysis followed by a longitudinal analysis to explore the factors associated with the CD4+ lymphocyte trend; lastly, we studied the possible predictors of death and AIDS in our cohort in a multivariable model., Results: 32 subjects were enrolled, 17 (53%) HIV-2 infected and 15 (46.8%) HIV-1/HIV-2 dual-infected; 12 patients were lost to follow up, while 3 died. We found a lack of HIV-2 viremia in 12/32 subjects (37.5%). Most of the patients at baseline had a good viro-immunological profile with HIV-2 RNA <200 copies/ml and CD4+ lymphocyte >200 cell/mcl. We found a CD4+ lymphocyte improvement over time, both in the absolute number ( β 472.61, 95%CI 383.05-562.18, p<0.001) and in percentage ( β 25.28, 95%CI 21.91 - 28.66, p<0.001). Nevertheless, subjects taking cART had CD4+ lymphocyte percentage increase over time, and this trend appeared significantly better than those who did not receive therapy. Lastly, in the multivariable model CD4+, T-cell count increase was negatively associated with AIDS (HR 0.34 95%CI 0.13-0.91, p=0.032)., Conclusion: We found a higher prevalence of HIV-1/2 dual infection than in previous observations. Subjects with HIV-2 infection showed a favorable immunological condition at diagnosis, and the benefits of cART in those who received treatment are undiscussed. Moreover, our data suggest a different disease course based on age at diagnosis, as in HIV-1 infections. We encourage starting cART at diagnosis in HIV-2 patients, regardless of CD4+ lymphocyte, because even in the new cART era, CD4+ lymphocyte decrease remains the strongest predictor of death and AIDS also in this population., Competing Interests: Competing interests: The authors declare no conflict of Interest.
- Published
- 2022
- Full Text
- View/download PDF
46. Decrease in new diagnosis of HIV/AIDS in the two years period 2019-2020: impact of COVID-19 pandemic.
- Author
-
Quiros-Roldan E, Izzo I, Carriero C, Degli Antoni M, Storti S, Tiecco G, Gardini G, Focà E, and Castelli F
- Abstract
The emergence SARS-CoV-2 in late 2019 and early 2020 has caused a pandemic of unprecedented proportions. Management of COVID-19 became emergent public health priorities, and the impact on other public health initiatives, such as expanded HIV screening and linkage to care, remain largely unknown. In this Single-Center retrospective observational study, we describe the characteristics and circumstance of the new HIV cases during 2020 compared to 2019. We observed a decrease of HIV diagnosis during this period. Interestingly, median age at HIV diagnosis decreased of one decade and percentage of female patients was higher. In addition, more patients received diagnosis during hospitalization and more AIDS-defining conditions, such as Pneumocystis pneumonia, were detected. We express our concern that HIV new diagnoses will increase as a result of people's inability to get tested or treated in this period. More efforts are needed to improve local screening programs both during and after COVID-19 pandemic.
- Published
- 2021
- Full Text
- View/download PDF
47. Impact of COVID-19 pandemic on HIV viremia: a single-center cohort study in northern Italy.
- Author
-
Izzo I, Carriero C, Gardini G, Fumarola B, Chiari E, Castelli F, and Quiros-Roldan E
- Subjects
- COVID-19 virology, Cohort Studies, HIV Infections virology, Humans, Inpatients, Italy epidemiology, Outpatients, Public Health, SARS-CoV-2 isolation & purification, Viral Load, Viremia virology, COVID-19 epidemiology, HIV Infections epidemiology, Pandemics, Viremia epidemiology
- Abstract
Background: Brescia Province, northern Italy, was one of the worst epicenters of the COVID-19 pandemic. The division of infectious diseases of ASST (Azienda Socio Sanitaria Territoriale) Spedali Civili Hospital of Brescia had to face a great number of inpatients with severe COVID-19 infection and to ensure the continuum of care for almost 4000 outpatients with HIV infection actively followed by us. In a recent manuscript we described the impact of the pandemic on continuum of care in our HIV cohort expressed as number of missed visits, number of new HIV diagnosis, drop in ART (antiretroviral therapy) dispensation and number of hospitalized HIV patients due to SARS-CoV-2 infection. In this short communication, we completed the previous article with data of HIV plasmatic viremia of the same cohort before and during pandemic., Methods: We considered all HIV-patients in stable ART for at least 6 months and with at least 1 available HIV viremia in the time window March 01-November 30, 2019, and another group of HIV patients with the same two requisites but in different time windows of the COVID-19 period (March 01-May 31, 2020, and June 01-November 30, 2020). For patients with positive viremia (PV) during COVID-19 period, we reported also the values of viral load (VL) just before and after PV., Results: the percentage of patients with PV during COVID-19 period was lower than the previous year (2.8% vs 7%). Only 1% of our outpatients surely suffered from pandemic in term of loss of previous viral suppression., Conclusions: Our efforts to limit the impact of pandemic on our HIV outpatients were effective to ensure HIV continuum of care.
- Published
- 2021
- Full Text
- View/download PDF
48. Circumferential dissection of deep fascia as ancillary technique in circumcision: is it possible to correct phimosis increasing penis size?
- Author
-
Carmine P, Mario F, Antonio G, Vincenzo M, Elisa G, Angelo C, Gorizio P, and Sara I
- Subjects
- Adult, Fasciotomy, Humans, Male, Middle Aged, Organ Size, Penis anatomy & histology, Retrospective Studies, Treatment Outcome, Young Adult, Circumcision, Male methods, Foreskin surgery, Phimosis surgery
- Abstract
Background: Phimosis is the inability to retract the preputium downward over the glans penis. Despite the various techniques of preputial plasty described in literature, the most performed surgical treatment is still the conventional circumcision., Methods: In this paper we retrospectively reviewed data of a homogeneous population of 36 consecutive adult patients who underwent phimosis correction by circumcsion with dissection of the Deep Fascia. Patients were followed up by one independent plastic surgeon that measured penis length and circumference in nonerected state preoperatively and at 6 month time postoperatively., Results: The Wilcoxon Signed Rank Test showed a significant (p < 0.0001) difference between the two groups both in terms of length and circumference., Conclusions: In conclusion, the ancillary technique we described leads to an increase of penis size, is safe and easy to perform and does not increase significantly operative time nor complication rate to the conventional procedure.
- Published
- 2021
- Full Text
- View/download PDF
49. Discharge ward during the SARS-CoV-2 pandemic: an effective way to increase patient turnover when human resources are scarce.
- Author
-
Castelnuovo F, Marchese V, Cristini G, Crosato V, Pennati F, Renisi G, Izzo I, Paraninfo G, Van Hauwermeiren E, and Castelli F
- Subjects
- Adult, Aged, Aged, 80 and over, Bed Occupancy statistics & numerical data, COVID-19 mortality, Comorbidity, Female, Hospital Units organization & administration, Humans, Italy epidemiology, Length of Stay, Male, Medical Staff, Hospital organization & administration, Medical Staff, Hospital statistics & numerical data, Middle Aged, Nursing Staff, Hospital organization & administration, Nursing Staff, Hospital statistics & numerical data, Reproducibility of Results, Time Factors, COVID-19 epidemiology, Pandemics, Patient Discharge, SARS-CoV-2, Workforce
- Abstract
During the SARS-CoV-2 pandemic, the province of Brescia (Italy) had a significant number of COVID-19 cases, which led to a subversion of the ordinary structure of the university hospital ASST Spedali Civili, driven by the need to hospitalize as many patients as possible in a narrow period of time. At the peak of the epidemic, a rapid hospitalization discharge area, the Discharge Ward (DW), was set up with the aim of facilitating the rapid turnover of patients in the wards where the most severe patients had to be hospitalized. The organization and activities carried out are described in the results of this reproducible experience during epidemic events.
- Published
- 2020
50. An Entry to Enantioenriched 3,3-Disubstituted Phthalides through Asymmetric Phase-Transfer-Catalyzed γ-Alkylation.
- Author
-
Sicignano M, Schettini R, Pierri G, Marino ML, Izzo I, De Riccardis F, Bernardi L, and Sala GD
- Abstract
A novel asymmetric phase-transfer-catalyzed γ-alkylation of phthalide 3-carboxylic esters has been developed, giving access to 3,3-disubstituted phthalide derivatives, which present a chiral quaternary γ-carbon in good to excellent yields and good enantioselectivities (74-88% ee). The enantiomeric purity could be substantially enhanced to 94-95% ee by recrystallization. Both electron-withdrawing and electron-releasing substituents are well tolerated on the phthalide core as well as on the aromatic moiety of the alkylating agent. This methodology, enabling the introduction of an unfunctionalized group at the phthalide γ-position, fully complements previously reported organocatalytic strategies involving functionalized electrophiles, thus expanding the scope of accessible 3,3-disubstituted products. The high synthetic value of this asymmetric reaction has been proven by the formal synthesis of the naturally occurring alkaloid (+)-(9 S ,13 R )-13-hydroxyisocyclocelabenzine.
- Published
- 2020
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.