17 results on '"Riva, Elisabetta"'
Search Results
2. Relationships among lying and standing behaviour, body condition score and milk production in primiparous cows
- Author
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Mattachini, Gabriele, Tamburini, Alberto, Zucali, Maddalena, Bava, Luciana, Riva, Elisabetta, Provolo, Giorgio, and Sandrucci, Anna
- Abstract
AbstractThe aim of this study was to examine the time budgets of 20 lactating primiparous Italian Holstein cows and to determine the relationships between lying and standing behaviour, milk production and Body Condition Score in the first stage of lactation. Parturition period ranged from 15 September to 31 March and in the first seven lactation days all cows were equipped with individual 3-axes acceleration and angular displacement loggers, throughout 150 days for lying and standing behaviour measuring. Body Condition Scores (BCS) were estimated weekly, while milk production (in both morning and evening milking) and humidity and temperature air data were collected daily. Average individual milk yield was 27.3 ± 6.24 kg/d and milking time was 4.95 ± 1.94 min. Individual BCS was on average 3.46 ± 0.30 and standing daily time was 13.5 ± 2.26 h/d. Primiparous cows with BCS at parturition <3.25 quite regained BCS after 20 weeks of lactation, but produced on average 2.3 kg/d (p < .001) less than the other cows. Primiparous cows with standing time <14 h/d in the first 21 days of lactation showed higher BCS than the others cows (+0.11 on average, p < .001), but did not produce more milk (+0.1 kg/d, p = .25) on average and showed smaller Linear Score (logarithm transformation of milk somatic cell count) than other cows. Primiparous cows with standing time <14 h/d had higher number of lying bouts and less minutes between two lying bouts, probably due to a higher cow activity to feeding. Multiple regression on milk production showed a low effect of standing time, but primiparous cows lost 0.34 kg/d (p < .05) for each standing hour.HIGHLIGHTSPrimiparous cows with standing time <14 h/d in the first 21 days of lactation showed higher BCS than the others cowsPrimiparous cows with standing time <14 h/d showed smaller somatic cell countPrimiparous cows lost 0.34 kg/d for each standing hour
- Published
- 2020
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3. HIV-2 Infection in a Migrant from Gambia: The History of the Disease Combined with Phylogenetic Analysis Revealed the Real Source of Infection.
- Author
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Cella, Eleonora, Foley, Brian T., Riva, Elisabetta, Scolamacchia, Vittoria, Ceccarelli, Giancarlo, Vita, Serena, Iannetta, Marco, Ciardi, Maria Rosa, D'Ettorre, Gabriella, Angeletti, Silvia, and Ciccozzi, Massimo
- Abstract
Human immunodeficiency virus type 2 (HIV-2) infection prevalence is increasing in some European countries. The increasing migratory flow from countries where HIV-2 is endemic has facilitated the spread of the virus into Europe and other regions. We describe a case of HIV-2 infection in a migrant individual in the Asylum Seekers Centre (ASC) in Italy. The patient's virus was sequenced and found to be a typical HIV-2 genotype A virus. Bayesian evolutionary analysis revealed that the HIV-2 sequence from migrant dated back to 1986 in a subcluster, including sequences from Guinea Bissau. This was coherent with the history of the migrant who lived in Guinea Bissau from his birth until 1998 when he was 13 years old. Monitoring for HIV-2 infection in migrants from western Africa is necessary using adequate molecular tools to improve the diagnosis and understand the real origin of infection. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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4. Nutrient Losses during Winter and Summer Storage of Separated and Unseparated Digested Cattle Slurry.
- Author
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Perazzolo, Francesca, Mattachini, Gabriele, Riva, Elisabetta, and Provolo, Giorgio
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CATTLE manure & the environment ,AGRICULTURAL climatology ,GAS measurement - Abstract
Management factors affect nutrient loss during animal manure slurry storage in different ways. We conducted a pilot-scale study to evaluate carbon (C) and nitrogen (N) losses from unseparated and digested dairy slurry during winter and summer storage. In addition to season, treatments included mechanical separation of digestate into liquid and solid fractions and bimonthly mixing. Chemical analyses were performed every 2 wk for the mixed materials and at the start and end of storage for unmixed materials. The parameters examined allowed us to estimate C and N losses and examine the factors that determine these losses as well as emission patterns. Gas measurements were done every 2 wk to determine the main forms in which gaseous losses occurred. To evaluate the effect of separation, measured losses and emissions of separated liquid and solid fractions were mathematically combined using the mass separation efficiency of the mechanical separator. Nutrient losses were mainly affected by climatic conditions. Losses of C (up to 23%) from unseparated, unmixed digestate and of N (38% from combined separated fractions and from unseparated digestate) were much greater in summer than in winter, when C and N losses were <7%. Mixing tended to significantly increase N losses (P < 0.1) only in winter. Mechanical separation resulted in lower GHG emissions from combined separated fractions than from unseparated digestate. Results indicate that to maximize the fertilizer value of digested slurry, dairy farmers must carefully choose management practices, especially in summer. For separated digestates, practices should focus on storage of the liquid fraction, the major contributor of C and N losses (up to 64 and 90% of total losses, respectively) in summer. Moreover, management practices should limit NH
3 , the main form of N losses (up to 99.5%). [ABSTRACT FROM AUTHOR]- Published
- 2017
- Full Text
- View/download PDF
5. Effect of a Biological Additive on Nitrogen Losses from Pig Slurry during Storage.
- Author
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Provolo, Giorgio, Finzi, Alberto, Perazzolo, Francesca, Mattachini, Gabriele, and Riva, Elisabetta
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NITROGEN ,SWINE manure ,ADDITIVES ,SLURRY ,DENITRIFICATION ,THERMOSTAT - Abstract
Additives applied to animal manure slurries can affect the chemical composition and the biological processes of slurries during storage, with possible improvement of their management and reduction of environmental problems. Some new formulations are marketed claiming a nitrogen (N) removal effect due to denitrification, with the consequence of a reduced N content in the manure after storage. This study evaluated the effects of one of these commercial additives (BACTYcomplex) on slurry characteristics and N losses at a commercial piggery. The additive was applied to four different sectors of the piggery, each with an independent under-floor slurry pit; four other sectors served as controls without treatment. Pits were emptied every 4 wk, and the manure was analyzed for total and ammonia-N and total and volatile solids. Slurry samples from the last month of the on-farm assessment were removed and stored thermostatically in vessels external to the piggery. A subsample of slurry that was treated with the additive at the piggery was treated with an additional dose of additive at the beginning of long-term storage. The additive did not change the composition of the slurry during in-house storage (4 wk duration). During the 155 d of external thermostatic storage, the total solids content of treated slurry was reduced by 18% compared with control slurry, but the N content and composition of treated slurry was unaffected. The additive had a positive effect in accelerating the stabilization of the slurry but did not modify N losses. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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6. Nutrient Losses during Winter and Summer Storage of Separated and Unseparated Digested Cattle Slurry
- Author
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Perazzolo, Francesca, Mattachini, Gabriele, Riva, Elisabetta, and Provolo, Giorgio
- Abstract
Management factors affect nutrient loss during animal manure slurry storage in different ways. We conducted a pilot‐scale study to evaluate carbon (C) and nitrogen (N) losses from unseparated and digested dairy slurry during winter and summer storage. In addition to season, treatments included mechanical separation of digestate into liquid and solid fractions and bimonthly mixing. Chemical analyses were performed every 2 wk for the mixed materials and at the start and end of storage for unmixed materials. The parameters examined allowed us to estimate C and N losses and examine the factors that determine these losses as well as emission patterns. Gas measurements were done every 2 wk to determine the main forms in which gaseous losses occurred. To evaluate the effect of separation, measured losses and emissions of separated liquid and solid fractions were mathematically combined using the mass separation efficiency of the mechanical separator. Nutrient losses were mainly affected by climatic conditions. Losses of C (up to 23%) from unseparated, unmixed digestate and of N (38% from combined separated fractions and from unseparated digestate) were much greater in summer than in winter, when C and N losses were <7%. Mixing tended to significantly increase N losses (P< 0.1) only in winter. Mechanical separation resulted in lower GHG emissions from combined separated fractions than from unseparated digestate. Results indicate that to maximize the fertilizer value of digested slurry, dairy farmers must carefully choose management practices, especially in summer. For separated digestates, practices should focus on storage of the liquid fraction, the major contributor of C and N losses (up to 64 and 90% of total losses, respectively) in summer. Moreover, management practices should limit NH3, the main form of N losses (up to 99.5%). Season had the most significant effect on N and C losses during slurry storage.Mechanical separation did not significantly affect N and C losses.In summer, temperature caused losses of up to 38% of TKN and 23% of TOC from digested slurry.CO2and NH3were the predominant gaseous forms of C and N losses.
- Published
- 2017
- Full Text
- View/download PDF
7. Effect of a Biological Additive on Nitrogen Losses from Pig Slurry during Storage
- Author
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Provolo, Giorgio, Finzi, Alberto, Perazzolo, Francesca, Mattachini, Gabriele, and Riva, Elisabetta
- Abstract
Additives applied to animal manure slurries can affect the chemical composition and the biological processes of slurries during storage, with possible improvement of their management and reduction of environmental problems. Some new formulations are marketed claiming a nitrogen (N) removal effect due to denitrification, with the consequence of a reduced N content in the manure after storage. This study evaluated the effects of one of these commercial additives (BACTYcomplex) on slurry characteristics and N losses at a commercial piggery. The additive was applied to four different sectors of the piggery, each with an independent under‐floor slurry pit; four other sectors served as controls without treatment. Pits were emptied every 4 wk, and the manure was analyzed for total and ammonia‐N and total and volatile solids. Slurry samples from the last month of the on‐farm assessment were removed and stored thermostatically in vessels external to the piggery. A subsample of slurry that was treated with the additive at the piggery was treated with an additional dose of additive at the beginning of long‐term storage. The additive did not change the composition of the slurry during in‐house storage (4 wk duration). During the 155 d of external thermostatic storage, the total solids content of treated slurry was reduced by 18% compared with control slurry, but the N content and composition of treated slurry was unaffected. The additive had a positive effect in accelerating the stabilization of the slurry but did not modify N losses. A new biological additive with denitrification enhancement capability was tested.The additive increased the total solids reduction during 6 mo storage of the slurry.The total and ammonia‐N losses were not affected by the additive.The additive promoted stabilization of slurry but did not reduce N content.
- Published
- 2016
- Full Text
- View/download PDF
8. Human papilloma virus expression in immunocompetent patients with actinic keratosis: A case series.
- Author
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Dianzani, Caterina, Paolini, Francesca, Conforti, Claudio, Riva, Elisabetta, Beninati, Emanuela, and Venuti, Aldo
- Published
- 2017
- Full Text
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9. The new Chikungunya virus outbreak in Italy possibly originated from a single introduction from Asia
- Author
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Cella, Eleonora, Riva, Elisabetta, Salemi, Marco, Spoto, Silvia, Vita, Serena, Fogolari, Marta, Angeletti, Silvia, and Ciccozzi, Massimo
- Published
- 2018
- Full Text
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10. High detection rate of human papillomavirus in anal brushings from women attending a proctology clinic.
- Author
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Pierangeli, Alessandra, Scagnolari, Carolina, Selvaggi, Carla, Cannella, Fabiana, Riva, Elisabetta, Impagnatiello, Alessio, Bernardi, Gloria, Ciardi, Antonio, Moschella, Cosima Maria, Antonelli, Guido, and Indinnimeo, Marileda
- Subjects
PAPILLOMAVIRUSES ,ANAL diseases ,PROCTOLOGY ,DNA ,STATISTICAL correlation ,DISEASES in women - Abstract
Summary: Objectives: To study human papillomavirus (HPV) anal infection in anal brushings from women attending a proctology clinic, and compare results with those obtained from paired cervical brushings. Methods: Women attending a university hospital proctology clinic for anal conditions or as part of a screening campaign, were enrolled consecutively, excluding those reporting previous HPV-related pathologies. HPV genotypes in anal and cervical brushings were determined by sequencing and, in most cases, type-specific viral loads were measured. Results: HPV DNA was detected in 28.3% of anal brushings, with 47.4% of HPV genotypes being high risk. Cervical HPV detection was at almost the same rate but HPV status was discordant in about half those women with at least one positive specimen. Abnormal cytological findings were more common in anal than in cervical samples, in particular in the proctology outpatients. Viral load measurements excluded the existence of a multiple infection with genotypes detected in discordant anal- and cervical-paired samples and showed a significant correlation between anal and cervical paired concordant samples. Conclusions: The high rate of HPV detection in anal brushings that is not usually related to HPV positivity in cervical brushings could provide support for offering HPV DNA tests to women attending proctology clinics. [Copyright &y& Elsevier]
- Published
- 2012
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11. Case Report: Liver Cirrhosis After Prolonged Therapy with IFN-α plus Interleukin-2 in a Metastatic Renal Cancer Long-Term Survivor
- Author
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Gentilucci, Umberto Vespasiani, Santini, Daniele, Picardi, Antonio, Vincenzi, Bruno, Riva, Elisabetta, Bianchi, Antonella, and Tonini, Giuseppe
- Abstract
Interleukin-2 (IL-2) therapy is associated with serious toxic effects on the cardiopulmonary system. Less frequent toxicity is described in liver and the gastrointestinal system. A case of severe liver toxicity is described in a patient who underwent long-term immunotherapy with IL-2 (4.5 MU/m2 s.c. daily, 5 days per week for 6 weeks, with 4 weeks of interval) plus interferon-α (IFN-α) (3 MU s.c. t.i.w., also covering the intervals between IL-2 cycles) for a metastatic renal carcinoma. A review of the literature is provided. The patient tolerated well the immunotherapy scheduled with apparently only a World Health Organization (WHO) G3 anemia and a G2 asthenia and is still alive, with a disease-free survival of 28 months. Notwithstanding a complete absence of liver function test abnormality during all scheduled clinical controls, the patient developed portal hypertension due to liver cirrhosis, which was histologically demonstrated. All common etiologic viral and toxic agents were ruled out. Long-term IL-2 therapy can induce liver cirrhosis. The appearance of liver and spleen enlargement during IL-2 therapy can be considered an indicator of liver damage. Thus, in this setting, closer monitoring is warranted despite normal liver function tests.
- Published
- 2002
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12. Decay of HIV Type 1 DNA and Development of Drug-Resistant Mutants in Patients with Primary HIV Type 1 Infection Receiving Highly Active Antiretroviral Therapy
- Author
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Riva, Elisabetta, Pistello, Mauro, Narciso, Pasquale, D'Offizi, Gianpiero, Isola, Patrizia, Galati, Vincenzo, Turriziani, Ombretta, Tozzi, Valerio, Vincenzi, Laura, Dianzani, Ferdinando, and Antonelli, Guido
- Abstract
The present study was aimed at describing the effect of highly active antiretroviral therapy (HAART) in 10 patients with primary HIV infection (PHI). Clearance rates of HIV RNA and HIV DNA in peripheral blood as well as the preexistence and the emergence of drug-resistant strains of HIV were determined over 52 weeks of treatment. The data indicate that HAART is able to induce a suppression of plasma viral load together with a significant decrease, but not a suppression, of peripheral blood mononuclear cell-associated proviral DNA in PHI subjects. Analysis of drug-resistant strains revealed that three PHI patients, showing a complete virologic response, developed mutations in the pol gene, thus suggesting that a persistent residual virus replication exists despite a sustained suppression of plasma viremia.
- Published
- 2001
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13. The Benign Cystic Lymphoepithelial Lesion of the Parotid Gland Is a Viral Reservoir in HIV Type 1-Infected Patients
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Uccini, Stefania, Riva, Elisabetta, Antonelli, Guido, D'Offizi, Giampiero, Prozzo, Alessandra, Angelici, Alberto, Faggioni, Alberto, Angeloni, Antonio, Torrisi, Maria Rosaria, Gentile, Massimo, Baroni, Carlo D., and Ruco, Luigi P.
- Abstract
The presence of HIV-1 in cystic fluid aspirates from six cases of benign cystic lymphoepithelial lesion (BLL) of the parotid gland, a rare disorder affecting HIV-1-infected patients, has been investigated. HIV-1 p24 protein was present at a concentration ranging from 3 to 15 ng/ml, while it was undetectable in the peripheral blood of the same patients. The number of RNA copies of HIV-1 in the cystic fluids was high, ranging from 0.5 X 107 to 7.2 X 107 RNA copies/ml. BLL cystic fluid aspirates, despite the high level of HIV-1 RNA, were found to contain only a few infectious virions. The low infectivity correlated with the infrequent detection by electron microscopy of complete HIV-1 particles. The pathogenic mechanism leading to virus accumulation in the cystic fluid was studied by immunohistochemistry of tissue sections. p24 protein was associated with DRC-1+/S-100+ follicular dendritic reticulum cells, which were also present within the cystic cavities. Our findings are consistent with the possibility that the large amounts of virus present in the fluid derive from continuous shedding of HIV-1-infected cells from the surrounding lymphoid tissue.
- Published
- 1999
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14. Personality Disorders and Psychopathologic Symptoms in Patients With Androgenetic Alopecia
- Author
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Maffei, Cesare, Fossati, Andrea, Rinaldi, Fabio, and Riva, Elisabetta
- Abstract
BACKGROUND AND DESIGN: The few articles published on the interactions between psychological factors and alopecia seem to yield contrasting results. To assess the relationships between alopecia, gender, Diagnostic Statistical Manual of Mental Disorders, Revised Third Edition personality disorders, and psychopathologic symptoms reactive to alopecia, we administered the Personality Disorders Questionnaire-Revised and the Symptoms Checklist-90 to a randomly selected sample of 116 outpatients with androgenetic alopecia. RESULTS: The prevalence of personality disorders in subjects with androgenetic alopecia proved to be significantly higher than the prevalence of such diagnoses in the general population. Women did not show a higher prevalence of personality disorders or more psychopathologic symptoms than men. The factor analysis demonstrated the existence of three personality profiles (F1, F2, and F3) significantly and specifically associated with the subject's gender and with the psychopathologic reactive symptoms, measured using the Symptoms Checklist-90. CONCLUSIONS: The most important factor in developing a psychopathologic reaction to alopecia seems to be the presence of a Diagnostic Statistical Manual of Mental Disorders, Revised Third Edition personality disorder and not the subject's gender.(Arch Dermatol. 1994;130:868-872)
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- 1994
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15. Ibopamine versus hydrochlorothiazide/amiloride in patients with mild congestive heart failure
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Riva, Elisabetta, Abbondati, G., Cavalli, A., Fuccella, L. M., Schleman, M., Tournadre, P., Blanchot, P., Demange, J., Germaine, R., Kayanakis, J., Lahitton, B., Sellier, P., Tadei, A., De Weerd, P., Klazen, C., Penn, H., Rehorst, D., Basso, F., Floris, B., Guffanti, E., Mazzola, C., Mereu, D., Pisano, G., Rossi, P., Sonaglioni, G., Beissel, J., Delagardelle, Ch., Ferres, M., and Friederici, R.
- Abstract
Summary The clinical efficacy and safety of ibopamine and diuretic therapy were compared in a multicenter, multinational, parallel, positive-controlled, randomized, double-blind, 12-week study, involving 103 patients with mild CHF (NYHA Class II). Body weight, NYHA functional class, symptom assessment scores, laboratory blood tests, and exercise testing were evaluated at baseline at interim visits and at the end of 12 weeks. Clinical events were monitored throughout the study.
- Published
- 1989
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16. Role of the IL28B Rs12979860 C/T Polymorphism on the Incidence of Clinically-Active Cytomegalovirus Infection in Autologous Stem Cell Transplant Patients
- Author
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Annibali, Ombretta, Riva, Elisabetta, Piccioni, Livia, Chiodi, Francesca, Tomarchio, Valeria, Armiento, Daniele, Circhetta, Erika, Scardocci, Alessandra, Ferraro, Silvia, Tirindelli, Maria Cristina, and Avvisati, Giuseppe
- Abstract
No relevant conflicts of interest to declare.
- Published
- 2015
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17. Role of the IL28B Rs12979860 C/T Polymorphism on the Incidence of Clinically-Active Cytomegalovirus Infection in Autologous Stem Cell Transplant Patients
- Author
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Annibali, Ombretta, Riva, Elisabetta, Piccioni, Livia, Chiodi, Francesca, Tomarchio, Valeria, Armiento, Daniele, Circhetta, Erika, Scardocci, Alessandra, Ferraro, Silvia, Tirindelli, Maria Cristina, and Avvisati, Giuseppe
- Abstract
Background
- Published
- 2015
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