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2. Effect of the Lateral Mean Recirculation Characteristics on Near-Wake and Bulk Quantities of a 5:1 Rectangular Cylinder

Author

Lunghi, G., Pasqualetto, E., Mariotti, A., Salvetti, M. V., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Schito, Paolo, editor, and Zasso, Alberto, editor

Published
2024
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3. Subgrid-Scale Modeling for Remeshed Vortex Methods

Author

de Crouy-Chanel, M., Mimeau, C., Mortazavi, I., Salvetti, M. V., Geurts, Bernard, Series Editor, Salvetti, Maria Vittoria, Series Editor, Marchioli, Cristian, editor, Garcia-Villalba, Manuel, editor, and Schlatter, Philipp, editor

Published
2024
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10. Some computations on the characteristic variety of a line arrangement

Author

Papini, O. and Salvetti, M.

Subjects
Mathematics - Algebraic Topology, 55N25 (Primary) 32S22, 32S50 (Secondary)
Abstract

We find monodromy formulas for line arrangements which are fibered with respect to the projection from one point. We use them to find $0$-dimensional translated components in the first characteristic variety of the arrangement $\mathcal R(2n)$ determined by a regular $n$-polygon and its diagonals., Comment: 17 pages, 4 figures

Published
2020

11. May Measure Month 2022 in Italy: A Focus on Fixed-dose Combination, Therapeutic Adherence, and Medical Inertia in a Nationwide Survey

Author

Del Pinto, R, Agabiti Rosei, C, Borghi, C, Cipollini, F, Cottone, S, De Giorgi, G, Di Guardo, A, Dugnani, M, Fabris, B, Giannattasio, C, Giacchetti, G, Minuz, P, Mulè, G, Nazzaro, P, Parati, G, Rattazzi, M, Saladini, F, Salvetti, M, Sarzani, R, Savoia, C, Tocci, G, Veglio, F, Volpe, M, Vulpis, V, Baldini, G, Ferri, C, Muiesan, M, Del Pinto R., Agabiti Rosei C., Borghi C., Cipollini F., Cottone S., De Giorgi G. A., Di Guardo A., Dugnani M., Fabris B., Giannattasio C., Giacchetti G., Minuz P., Mulè G., Nazzaro P., Parati G., Rattazzi M., Saladini F., Salvetti M., Sarzani R., Savoia C., Tocci G., Veglio F., Volpe M., Vulpis V., Baldini G., Ferri C., Muiesan M. L., Del Pinto, R, Agabiti Rosei, C, Borghi, C, Cipollini, F, Cottone, S, De Giorgi, G, Di Guardo, A, Dugnani, M, Fabris, B, Giannattasio, C, Giacchetti, G, Minuz, P, Mulè, G, Nazzaro, P, Parati, G, Rattazzi, M, Saladini, F, Salvetti, M, Sarzani, R, Savoia, C, Tocci, G, Veglio, F, Volpe, M, Vulpis, V, Baldini, G, Ferri, C, Muiesan, M, Del Pinto R., Agabiti Rosei C., Borghi C., Cipollini F., Cottone S., De Giorgi G. A., Di Guardo A., Dugnani M., Fabris B., Giannattasio C., Giacchetti G., Minuz P., Mulè G., Nazzaro P., Parati G., Rattazzi M., Saladini F., Salvetti M., Sarzani R., Savoia C., Tocci G., Veglio F., Volpe M., Vulpis V., Baldini G., Ferri C., and Muiesan M. L.

Abstract

Introduction: Hypertension is the main risk factor for cardiovascular diseases (CVD). Notably, only about half of hypertensive patients manage to achieve the recommended blood pressure (BP) control. Main reasons for the persistence of uncontrolled BP during treatment are lack of compliance on the patients' side, and therapeutic inertia on physicians' side. Methods: During the global BP screening campaign "May Measure Month" (MMM) (May 1st to July 31st, 2022), a nationwide, cross-sectional, opportunistic study endorsed by the Italian Society of Hypertension was conducted on volunteer adults ≥ 18 years to raise awareness of the health issues surrounding high BP. A questionnaire on demographic/clinical features and questions on the use of fixed-dose single-pills for the treatment of hypertension was administered. BP was measured with standard procedures. Results: A total of 1612 participants (mean age 60.0±15.41 years; 44.7% women) were enrolled. Their mean BP was 128.5±18.1/77.1±10.4 mmHg. About half of participants were sedentary, or overweight/obese, or hypertensive. 55.5% individuals with complete BP assessment had uncontrolled hypertension. Most were not on a fixed-dose combination of antihypertensive drugs and did not regularly measure BP at home. Self-reported adherence to BP medications was similar between individuals with controlled and uncontrolled BP (95% vs 95.5%). Conclusions: This survey identified a remarkable degree of therapeutic inertia and poor patients' involvement in the therapeutic process and its monitoring in the examined population, underlining the importance of prevention campaigns to identify areas of unsatisfactory management of hypertension, to increase risk factors' awareness in the population with the final purpose of reducing cardiovascular risk.

Published
2024

12. Prognostic Value and Relative Cutoffs of Triglycerides Predicting Cardiovascular Outcome in a Large Regional‐Based Italian Database

Author

Tikhonoff, V, Casiglia, E, Virdis, A, Grassi, G, Angeli, F, Arca, M, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, D'Elia, L, Desideri, G, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Iaccarino, G, Mallamaci, F, Maloberti, A, Masi, S, Masulli, M, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Temporelli, P, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Borghi, C, Tikhonoff V., Casiglia E., Virdis A., Grassi G., Angeli F., Arca M., Barbagallo C. M., Bombelli M., Cappelli F., Cianci R., Cicero A. F. G., Cirillo M., Cirillo P., Dell'oro R., D'elia L., Desideri G., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Iaccarino G., Mallamaci F., Maloberti A., Masi S., Masulli M., Mazza A., Mengozzi A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Reboldi G., Rivasi G., Russo E., Salvetti M., Temporelli P. L., Tocci G., Ungar A., Verdecchia P., Viazzi F., Volpe M., Borghi C., Tikhonoff, V, Casiglia, E, Virdis, A, Grassi, G, Angeli, F, Arca, M, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, D'Elia, L, Desideri, G, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Iaccarino, G, Mallamaci, F, Maloberti, A, Masi, S, Masulli, M, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Temporelli, P, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Borghi, C, Tikhonoff V., Casiglia E., Virdis A., Grassi G., Angeli F., Arca M., Barbagallo C. M., Bombelli M., Cappelli F., Cianci R., Cicero A. F. G., Cirillo M., Cirillo P., Dell'oro R., D'elia L., Desideri G., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Iaccarino G., Mallamaci F., Maloberti A., Masi S., Masulli M., Mazza A., Mengozzi A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Reboldi G., Rivasi G., Russo E., Salvetti M., Temporelli P. L., Tocci G., Ungar A., Verdecchia P., Viazzi F., Volpe M., and Borghi C.

Abstract

BACKGROUND: Despite longstanding epidemiologic data on the association between increased serum triglycerides and cardiovascular events, the exact level at which risk begins to rise is unclear. The Working Group on Uric Acid and Cardiovascular Risk of the Italian Society of Hypertension has conceived a protocol aimed at searching for the prognostic cutoff value of triglycerides in predicting cardiovascular events in a large regional-based Italian cohort. METHODS AND RESULTS: Among 14 189 subjects aged 18 to 95 years followed-up for 11.2 (5.3–13.2) years, the prognostic cutoff value of triglycerides, able to discriminate combined cardiovascular events, was identified by means of receiver operating characteristic curve. The conventional (150 mg/dL) and the prognostic cutoff values of triglycerides were used as independent predictors in separate multivariable Cox regression models adjusted for age, sex, body mass index, total and high-density lipoprotein cholesterol, serum uric acid, arterial hypertension, diabetes, chronic renal disease, smoking habit, and use of an-tihypertensive and lipid-lowering drugs. During 139 375 person-years of follow-up, 1601 participants experienced cardiovascular events. Receiver operating characteristic curve showed that 89 mg/dL (95% CI, 75.8–103.3, sensitivity 76.6, specificity 34.1, P<0.0001) was the prognostic cutoff value for cardiovascular events. Both cutoff values of triglycerides, the conventional and the newly identified, were accepted as multivariate predictors in separate Cox analyses, the hazard ratios being 1.211 (95% CI, 1.063–1.378, P=0.004) and 1.150 (95% CI, 1.021–1.295, P=0.02), respectively. CONCLUSIONS: Lower (89 mg/dL) than conventional (150 mg/dL) prognostic cutoff value of triglycerides for cardiovascular events does exist and is associated with increased cardiovascular risk in an Italian cohort.

Published
2024

13. Phenotyping congestion in patients with acutely decompensated heart failure with preserved and reduced ejection fraction: The Decongestion duRing therapY for acute decOmpensated heart failure in HFpEF vs HFrEF- DRY-OFF study

Author

Cogliati, C, Ceriani, E, Gambassi, G, De Matteis, G, Perlini, S, Perrone, T, Muiesan, ML, Salvetti, M, Leidi, F, Ferrara, F, Sabbà, C, Suppressa, P, Fracanzani, A, Montano, N, Fiorelli, E, Tripepi, G, Gori, M, Pitino, A, and Pietrangelo, A

Published
2022
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16. Serum Uric Acid, Hypertriglyceridemia, and Carotid Plaques: A Sub-Analysis of the URic Acid Right for Heart Health (URRAH) Study

Author

Agabiti Rosei, C, Paini, A, Buso, G, Maloberti, A, Giannattasio, C, Salvetti, M, Casiglia, E, Tikhonoff, V, Angeli, F, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, D'Elia, L, Desideri, G, Ferri, C, Galletti, F, Gesualdo, L, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Masi, S, Masulli, M, Mazza, A, Mengozzi, A, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Virdis, A, Muiesan, M, Borghi, C, Agabiti Rosei, Claudia, Paini, Anna, Buso, Giacomo, Maloberti, Alessandro, Giannattasio, Cristina, Salvetti, Massimo, Casiglia, Edoardo, Tikhonoff, Valerie, Angeli, Fabio, Barbagallo, Carlo Maria, Bombelli, Michele, Cappelli, Federica, Cianci, Rosario, Ciccarelli, Michele, Cicero, Arrigo Francesco Giuseppe, Cirillo, Massimo, Cirillo, Pietro, Dell'Oro, Raffaella, D'Elia, Lanfranco, Desideri, Giovambattista, Ferri, Claudio, Galletti, Ferruccio, Gesualdo, Loreto, Grassi, Guido, Iaccarino, Guido, Lippa, Luciano, Mallamaci, Francesca, Masi, Stefano, Masulli, Maria, Mazza, Alberto, Mengozzi, Alessandro, Nazzaro, Pietro, Palatini, Paolo, Parati, Gianfranco, Pontremoli, Roberto, Quarti-Trevano, Fosca, Rattazzi, Marcello, Reboldi, Gianpaolo, Rivasi, Giulia, Russo, Elisa, Tocci, Giuliano, Ungar, Andrea, Verdecchia, Paolo, Viazzi, Francesca, Volpe, Massimo, Virdis, Agostino, Muiesan, Maria Lorenza, Borghi, Claudio, Agabiti Rosei, C, Paini, A, Buso, G, Maloberti, A, Giannattasio, C, Salvetti, M, Casiglia, E, Tikhonoff, V, Angeli, F, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, D'Elia, L, Desideri, G, Ferri, C, Galletti, F, Gesualdo, L, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Masi, S, Masulli, M, Mazza, A, Mengozzi, A, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Virdis, A, Muiesan, M, Borghi, C, Agabiti Rosei, Claudia, Paini, Anna, Buso, Giacomo, Maloberti, Alessandro, Giannattasio, Cristina, Salvetti, Massimo, Casiglia, Edoardo, Tikhonoff, Valerie, Angeli, Fabio, Barbagallo, Carlo Maria, Bombelli, Michele, Cappelli, Federica, Cianci, Rosario, Ciccarelli, Michele, Cicero, Arrigo Francesco Giuseppe, Cirillo, Massimo, Cirillo, Pietro, Dell'Oro, Raffaella, D'Elia, Lanfranco, Desideri, Giovambattista, Ferri, Claudio, Galletti, Ferruccio, Gesualdo, Loreto, Grassi, Guido, Iaccarino, Guido, Lippa, Luciano, Mallamaci, Francesca, Masi, Stefano, Masulli, Maria, Mazza, Alberto, Mengozzi, Alessandro, Nazzaro, Pietro, Palatini, Paolo, Parati, Gianfranco, Pontremoli, Roberto, Quarti-Trevano, Fosca, Rattazzi, Marcello, Reboldi, Gianpaolo, Rivasi, Giulia, Russo, Elisa, Tocci, Giuliano, Ungar, Andrea, Verdecchia, Paolo, Viazzi, Francesca, Volpe, Massimo, Virdis, Agostino, Muiesan, Maria Lorenza, and Borghi, Claudio

Abstract

High levels of serum uric acid (SUA) and triglycerides (TG) might promote high-cardiovascular-risk phenotypes, including subclinical atherosclerosis. An interaction between plaques xanthine oxidase (XO) expression, SUA, and HDL-C has been recently postulated. Subjects from the URic acid Right for heArt Health (URRAH) study with carotid ultrasound and without previous cardiovascular diseases (CVD) (n = 6209), followed over 20 years, were included in the analysis. Hypertriglyceridemia (hTG) was defined as TG ≥ 150 mg/dL. Higher levels of SUA (hSUA) were defined as ≥5.6 mg/dL in men and 5.1 mg/dL in women. A carotid plaque was identified in 1742 subjects (28%). SUA and TG predicted carotid plaque (HR 1.09 [1.04-1.27], p < 0.001 and HR 1.25 [1.09-1.45], p < 0.001) in the whole population, independently of age, sex, diabetes, systolic blood pressure, HDL and LDL cholesterol and treatment. Four different groups were identified (normal SUA and TG, hSUA and normal TG, normal SUA and hTG, hSUA and hTG). The prevalence of plaque was progressively greater in subjects with normal SUA and TG (23%), hSUA and normal TG (31%), normal SUA and hTG (34%), and hSUA and hTG (38%) (Chi-square, 0.0001). Logistic regression analysis showed that hSUA and normal TG [HR 1.159 (1.002 to 1.341); p = 0.001], normal SUA and hTG [HR 1.305 (1.057 to 1.611); p = 0.001], and the combination of hUA and hTG [HR 1.539 (1.274 to 1.859); p = 0.001] were associated with a higher risk of plaque. Our findings demonstrate that SUA is independently associated with the presence of carotid plaque and suggest that the combination of hyperuricemia and hypertriglyceridemia is a stronger determinant of carotid plaque than hSUA or hTG taken as single risk factors. The association between SUA and CVD events may be explained in part by a direct association of UA with carotid plaques.

Published
2024

17. Risk of Cardiovascular Events in Metabolically Healthy Overweight or Obese Adults: Role of LDL-Cholesterol in the Stratification of Risk

Author

Palatini, P, Virdis, A, Masi, S, Mengozzi, A, Casiglia, E, Tikhonoff, V, Cicero, A, Ungar, A, Parati, G, Rivasi, G, Salvetti, M, Barbagallo, C, Bombelli, M, Dell'Oro, R, Bruno, B, Lippa, L, D'Elia, L, Masulli, M, Verdecchia, P, Reboldi, G, Angeli, F, Cianci, R, Mallamaci, F, Cirillo, M, Rattazzi, M, Cirillo, P, Gesualdo, L, Russo, E, Mazza, A, Giannattasio, C, Maloberti, A, Volpe, M, Tocci, G, Iaccarino, G, Nazzaro, P, Galletti, F, Ferri, C, Desideri, G, Viazzi, F, Pontremoli, R, Muiesan, M, Grassi, G, Borghi, C, Palatini, Paolo, Virdis, Agostino, Masi, Stefano, Mengozzi, Alessandro, Casiglia, Edoardo, Tikhonoff, Valerie, Cicero, Arrigo F G, Ungar, Andrea, Parati, Gianfranco, Rivasi, Giulia, Salvetti, Massimo, Barbagallo, Carlo Maria, Bombelli, Michele, Dell'Oro, Raffaella, Bruno, Berardino, Lippa, Luciano, D'Elia, Lanfranco, Masulli, Maria, Verdecchia, Paolo, Reboldi, Gianpaolo, Angeli, Fabio, Cianci, Rosario, Mallamaci, Francesca, Cirillo, Massimo, Rattazzi, Marcello, Cirillo, Pietro, Gesualdo, Loreto, Russo, Elisa, Mazza, Alberto, Giannattasio, Cristina, Maloberti, Alessandro, Volpe, Massimo, Tocci, Giuliano, Iaccarino, Guido, Nazzaro, Pietro, Galletti, Ferruccio, Ferri, Claudio, Desideri, Giovambattista, Viazzi, Francesca, Pontremoli, Roberto, Muiesan, Maria Lorenza, Grassi, Guido, Borghi, Claudio, Palatini, P, Virdis, A, Masi, S, Mengozzi, A, Casiglia, E, Tikhonoff, V, Cicero, A, Ungar, A, Parati, G, Rivasi, G, Salvetti, M, Barbagallo, C, Bombelli, M, Dell'Oro, R, Bruno, B, Lippa, L, D'Elia, L, Masulli, M, Verdecchia, P, Reboldi, G, Angeli, F, Cianci, R, Mallamaci, F, Cirillo, M, Rattazzi, M, Cirillo, P, Gesualdo, L, Russo, E, Mazza, A, Giannattasio, C, Maloberti, A, Volpe, M, Tocci, G, Iaccarino, G, Nazzaro, P, Galletti, F, Ferri, C, Desideri, G, Viazzi, F, Pontremoli, R, Muiesan, M, Grassi, G, Borghi, C, Palatini, Paolo, Virdis, Agostino, Masi, Stefano, Mengozzi, Alessandro, Casiglia, Edoardo, Tikhonoff, Valerie, Cicero, Arrigo F G, Ungar, Andrea, Parati, Gianfranco, Rivasi, Giulia, Salvetti, Massimo, Barbagallo, Carlo Maria, Bombelli, Michele, Dell'Oro, Raffaella, Bruno, Berardino, Lippa, Luciano, D'Elia, Lanfranco, Masulli, Maria, Verdecchia, Paolo, Reboldi, Gianpaolo, Angeli, Fabio, Cianci, Rosario, Mallamaci, Francesca, Cirillo, Massimo, Rattazzi, Marcello, Cirillo, Pietro, Gesualdo, Loreto, Russo, Elisa, Mazza, Alberto, Giannattasio, Cristina, Maloberti, Alessandro, Volpe, Massimo, Tocci, Giuliano, Iaccarino, Guido, Nazzaro, Pietro, Galletti, Ferruccio, Ferri, Claudio, Desideri, Giovambattista, Viazzi, Francesca, Pontremoli, Roberto, Muiesan, Maria Lorenza, Grassi, Guido, and Borghi, Claudio

Abstract

The objective of this study was to investigate the longitudinal association of metabolically healthy overweight/obese adults with major adverse cardiovascular events (MACE) and the effect of LDL-cholesterol levels on this association. This study was conducted with 15,904 participants from the URRAH study grouped according to BMI and metabolic status. Healthy metabolic status was identified with and without including LDL-cholesterol. The risk of MACE during 11.8 years of follow-up was evaluated with multivariable Cox regressions. Among the participants aged <70 years, high BMI was associated with an increased risk of MACE, whereas among the older subjects it was associated with lower risk. Compared to the group with normal weight/healthy metabolic status, the metabolically healthy participants aged <70 years who were overweight/obese had an increased risk of MACE with an adjusted hazard ratio of 3.81 (95% CI, 1.34-10.85, p = 0.012). However, when LDL-cholesterol < 130 mg/dL was included in the definition of healthy metabolic status, no increase in risk was found in the overweight/obese adults compared to the normal weight individuals (hazard ratio 0.70 (0.07-6.71, p = 0.75). The present data show that the risk of MACE is increased in metabolically healthy overweight/obese individuals identified according to standard criteria. However, when LDL-cholesterol is included in the definition, metabolically healthy individuals who are overweight/obese have no increase in risk.

Published
2024

18. Triglyceride-glucose Index and Mortality in a Large Regional-based Italian Database (Urrah Project)

Author

D'Elia, L, Masulli, M, Virdis, A, Casiglia, E, Tikhonoff, V, Angeli, F, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, Desideri, G, Ferri, C, Gesualdo, L, Giannattasio, C, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Borghi, C, Galletti, F, D'Elia, Lanfranco, Masulli, Maria, Virdis, Agostino, Casiglia, Edoardo, Tikhonoff, Valerie, Angeli, Fabio, Barbagallo, Carlo Maria, Bombelli, Michele, Cappelli, Federica, Cianci, Rosario, Ciccarelli, Michele, Cicero, Arrigo F G, Cirillo, Massimo, Cirillo, Pietro, Dell'Oro, Raffaella, Desideri, Giovambattista, Ferri, Claudio, Gesualdo, Loreto, Giannattasio, Cristina, Grassi, Guido, Iaccarino, Guido, Lippa, Luciano, Mallamaci, Francesca, Maloberti, Alessandro, Masi, Stefano, Mazza, Alberto, Mengozzi, Alessandro, Muiesan, Maria Lorenza, Nazzaro, Pietro, Palatini, Paolo, Parati, Gianfranco, Pontremoli, Roberto, Quarti-Trevano, Fosca, Rattazzi, Marcello, Reboldi, Gianpaolo, Rivasi, Giulia, Russo, Elisa, Salvetti, Massimo, Tocci, Giuliano, Ungar, Andrea, Verdecchia, Paolo, Viazzi, Francesca, Volpe, Massimo, Borghi, Claudio, Galletti, Ferruccio, D'Elia, L, Masulli, M, Virdis, A, Casiglia, E, Tikhonoff, V, Angeli, F, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, Desideri, G, Ferri, C, Gesualdo, L, Giannattasio, C, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Borghi, C, Galletti, F, D'Elia, Lanfranco, Masulli, Maria, Virdis, Agostino, Casiglia, Edoardo, Tikhonoff, Valerie, Angeli, Fabio, Barbagallo, Carlo Maria, Bombelli, Michele, Cappelli, Federica, Cianci, Rosario, Ciccarelli, Michele, Cicero, Arrigo F G, Cirillo, Massimo, Cirillo, Pietro, Dell'Oro, Raffaella, Desideri, Giovambattista, Ferri, Claudio, Gesualdo, Loreto, Giannattasio, Cristina, Grassi, Guido, Iaccarino, Guido, Lippa, Luciano, Mallamaci, Francesca, Maloberti, Alessandro, Masi, Stefano, Mazza, Alberto, Mengozzi, Alessandro, Muiesan, Maria Lorenza, Nazzaro, Pietro, Palatini, Paolo, Parati, Gianfranco, Pontremoli, Roberto, Quarti-Trevano, Fosca, Rattazzi, Marcello, Reboldi, Gianpaolo, Rivasi, Giulia, Russo, Elisa, Salvetti, Massimo, Tocci, Giuliano, Ungar, Andrea, Verdecchia, Paolo, Viazzi, Francesca, Volpe, Massimo, Borghi, Claudio, and Galletti, Ferruccio

Abstract

Purpose: Recently, a novel index (triglyceride-glucose index-TyG) was considered a surrogate marker of insulin resistance (IR); in addition, it was estimated to be a better expression of IR than widely used tools. Few and heterogeneous data are available on the relationship between this index and mortality risk in non-Asian populations. Therefore, we estimated the predictive role of baseline TyG on the incidence of all-cause and cardiovascular (CV) mortality in a large sample of the general population. Moreover, in consideration of the well-recognized role of serum uric acid (SUA) on CV risk and the close correlation between SUA and IR, we also evaluated the combined effect of TyG and SUA on mortality risk. Methods: The analysis included 16,649 participants from the URRAH cohort. The risk of all-cause and CV mortality was evaluated by the Kaplan-Meier estimator and Cox multivariate analysis. Results: During a median follow-up of 144 months, 2569 deaths occurred. We stratified the sample by the optimal cut-off point for all-cause (4.62) and CV mortality (4.53). In the multivariate Cox regression analyses, participants with TyG above cut-off had a significantly higher risk of all-cause and CV mortality, than those with TyG below the cut-off. Moreover, the simultaneous presence of high levels of TyG and SUA was associated with a higher mortality risk than none or only one of the two factors. Conclusions: The results of this study indicate that these TyG (a low-cost and simple non-invasive marker) thresholds are predictive of an increased risk of mortality in a large and homogeneous general population. In addition, these results show a synergic effect of TyG and SUA on the risk of mortality.

Published
2024

19. Serum Uric Acid/Serum Creatinine Ratio and Cardiovascular Mortality in Diabetic Individuals—The Uric Acid Right for Heart Health (URRAH) Project

Author

D’Elia, L, Masulli, M, Cirillo, P, Virdis, A, Casiglia, E, Tikhonoff, V, Angeli, F, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, M, Dell’Oro, R, Desideri, G, Ferri, C, Gesualdo, L, Giannattasio, C, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Borghi, C, Galletti, F, D’Elia, Lanfranco, Masulli, Maria, Cirillo, Pietro, Virdis, Agostino, Casiglia, Edoardo, Tikhonoff, Valerie, Angeli, Fabio, Barbagallo, Carlo Maria, Bombelli, Michele, Cappelli, Federica, Cianci, Rosario, Ciccarelli, Michele, Cicero, Arrigo F. G., Cirillo, Massimo, Dell’Oro, Raffaella, Desideri, Giovambattista, Ferri, Claudio, Gesualdo, Loreto, Giannattasio, Cristina, Grassi, Guido, Iaccarino, Guido, Lippa, Luciano, Mallamaci, Francesca, Maloberti, Alessandro, Masi, Stefano, Mazza, Alberto, Mengozzi, Alessandro, Muiesan, Maria Lorenza, Nazzaro, Pietro, Palatini, Paolo, Parati, Gianfranco, Pontremoli, Roberto, Quarti-Trevano, Fosca, Rattazzi, Marcello, Reboldi, Gianpaolo, Rivasi, Giulia, Russo, Elisa, Salvetti, Massimo, Tocci, Giuliano, Ungar, Andrea, Verdecchia, Paolo, Viazzi, Francesca, Volpe, Massimo, Borghi, Claudio, Galletti, Ferruccio, D’Elia, L, Masulli, M, Cirillo, P, Virdis, A, Casiglia, E, Tikhonoff, V, Angeli, F, Barbagallo, C, Bombelli, M, Cappelli, F, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, M, Dell’Oro, R, Desideri, G, Ferri, C, Gesualdo, L, Giannattasio, C, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Volpe, M, Borghi, C, Galletti, F, D’Elia, Lanfranco, Masulli, Maria, Cirillo, Pietro, Virdis, Agostino, Casiglia, Edoardo, Tikhonoff, Valerie, Angeli, Fabio, Barbagallo, Carlo Maria, Bombelli, Michele, Cappelli, Federica, Cianci, Rosario, Ciccarelli, Michele, Cicero, Arrigo F. G., Cirillo, Massimo, Dell’Oro, Raffaella, Desideri, Giovambattista, Ferri, Claudio, Gesualdo, Loreto, Giannattasio, Cristina, Grassi, Guido, Iaccarino, Guido, Lippa, Luciano, Mallamaci, Francesca, Maloberti, Alessandro, Masi, Stefano, Mazza, Alberto, Mengozzi, Alessandro, Muiesan, Maria Lorenza, Nazzaro, Pietro, Palatini, Paolo, Parati, Gianfranco, Pontremoli, Roberto, Quarti-Trevano, Fosca, Rattazzi, Marcello, Reboldi, Gianpaolo, Rivasi, Giulia, Russo, Elisa, Salvetti, Massimo, Tocci, Giuliano, Ungar, Andrea, Verdecchia, Paolo, Viazzi, Francesca, Volpe, Massimo, Borghi, Claudio, and Galletti, Ferruccio

Abstract

Several studies have detected a direct association between serum uric acid (SUA) and cardiovascular (CV) risk. In consideration that SUA largely depends on kidney function, some studies explored the role of the serum creatinine (sCr)-normalized SUA (SUA/sCr) ratio in different settings. Previously, the URRAH (URic acid Right for heArt Health) Study has identified a cut-off value of this index to predict CV mortality at 5.35 Units. Therefore, given that no SUA/sCr ratio threshold for CV risk has been identified for patients with diabetes, we aimed to assess the relationship between this index and CV mortality and to validate this threshold in the URRAH subpopulation with diabetes; the URRAH participants with diabetes were studied (n = 2230). The risk of CV mortality was evaluated by the Kaplan–Meier estimator and Cox multivariate analysis. During a median follow-up of 9.2 years, 380 CV deaths occurred. A non-linear inverse association between baseline SUA/sCr ratio and risk of CV mortality was detected. In the whole sample, SUA/sCr ratio > 5.35 Units was not a significant predictor of CV mortality in diabetic patients. However, after stratification by kidney function, values > 5.35 Units were associated with a significantly higher mortality rate only in normal kidney function, while, in participants with overt kidney dysfunction, values of SUA/sCr ratio > 7.50 Units were associated with higher CV mortality. The SUA/sCr ratio threshold, previously proposed by the URRAH Study Group, is predictive of an increased risk of CV mortality in people with diabetes and preserved kidney function. While, in consideration of the strong association among kidney function, SUA, and CV mortality, a different cut-point was detected for diabetics with impaired kidney function. These data highlight the different predictive roles of SUA (and its interaction with kidney function) in CV risk, pointing out the difference in metabolic- and kidney-dependent SUA levels also in diabetic

Published
2024

20. Twisted cohomology of arrangements of lines and Milnor fibers

Author

Salvetti, M. and Serventi, M.

Subjects
Mathematics - Algebraic Topology
Abstract

Let $\A$ be an arrangement of affine lines in $\C^2,$ with complement $\M(\A).$ The (co)homo-logy of $\M(\A)$ with twisted coefficients is strictly related to the cohomology of the Milnor fibre associated to the conified arrangement, endowed with the geometric monodromy. Although several partial results are known, even the first Betti number of the Milnor fiber is not understood. We give here a vanishing conjecture for the first homology, which is of a different nature with respect to the known results. Let $\Gamma$ be the graph of \emph{double points} of $\A:$ we conjecture that if $\Gamma$ is connected then the geometric monodromy acts trivially on the first homology of the Milnor fiber (so the first Betti number is combinatorially determined in this case). This conjecture depends only on the combinatorics of $\A.$ We prove it in some cases with stronger hypotheses. In the final parts, we introduce a new description in terms of the group given by the quotient ot the commutator subgroup of $\pi_1(\M(\A))$ by the commutator of its \emph{length zero subgroup.} We use that to deduce some new interesting cases of a-monodromicity, including a proof of the conjecture under some extra conditions., Comment: 2 m pages, 7 figures

Published
2015

23. Large Eddy Simulation of a Wind Farm Experiment

Author

Rocchio, B., Ciri, U., Salvetti, M. V., Leonardi, S., Geurts, Bernard, Series Editor, Salvetti, Maria Vittoria, Series Editor, Armenio, Vincenzo, editor, Fröhlich, Jochen, editor, Geurts, Bernard J., editor, and Kuerten, Hans, editor

Published
2019
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24. Flow Separation Delay and Drag Reduction Through Contoured Transverse Grooves

Author

Mariotti, A., Buresti, G., Salvetti, M. V., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Ricciardelli, Francesco, editor, and Avossa, Alberto Maria, editor

Published
2019
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27. Some topological problems on the configuration spaces of Artin and Coxeter groups

Author

Moroni, D., Salvetti, M., and Villa, A.

Subjects
Mathematics - Algebraic Topology, 20J06, 55N25
Abstract

In the first part we review some topological and algebraic aspects in the theory of Artin and Coxeter groups, both in the finite and infinite case (but still, finitely generated). In the following parts, among other things, we compute the Schwartz genus of the covering associated to the orbit space for all affine Artin groups. We also give a partial computation of the cohomology of the braid group with non-abelian coefficients coming from geometric representations. We introduce an interesting class of "sheaves over posets", which we call "weighted sheaves over posets", and use them for explicit computations., Comment: arXiv admin note: text overlap with arXiv:1404.2392. Proceedings of Configuration spaces: geometry, combinatorics and topology, CRM E.De Giorgi, 2010, Edizioni della Scuola Normale Superiore

Published
2014
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28. The genus of the configuration spaces for Artin groups of affine type

Author

Moroni, D., Salvetti, M., and Villa, A.

Subjects
Mathematics - Algebraic Topology, 55N25, 20J06
Abstract

Let $(W,S)$ be a Coxeter system, $S$ finite, and let $G_{W}$ be the associated Artin group. One has configuration spaces $Y,\ Y_{W},$ where $G_{W}=\pi_1(Y_{W}),$ and a natural $W$-covering $f_{W}:\ Y\to Y_{W}.$ The Schwarz genus $g(f_{W})$ is a natural topological invariant to consider. In this paper we generalize this result by computing the Schwarz genus for a class of Artin groups, which includes the affine-type Artin groups. Let $K=K(W,S)$ be the simplicial scheme of all subsets $J\subset S$ such that the parabolic group $ W_J $ is finite. We introduce the class of groups for which $dim(K)$ equals the homological dimension of $K,$ and we show that $g(f_{W})$ is always the maximum possible for such class of groups. For affine Artin groups, such maximum reduces to the rank of the group. In general, it is given by $dim(X_{W})+1,$ where $ X_{ W}\subset Y_{ W}$ is a well-known $CW$-complex which has the same homotopy type as $ Y_{ W}.$, Comment: To appear in Atti Accad. Naz. Lincei Rend. Lincei Mat. Appl

Published
2014
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29. Hyperuricemia and Risk of Cardiovascular Outcomes: The Experience of the URRAH (Uric Acid Right for Heart Health) Project

Author

Maloberti, Alessandro, Giannattasio, C., Bombelli, M., Desideri, G., Cicero, A. F. G., Muiesan, M. L., Rosei, E. A., Salvetti, M., Ungar, A., Rivasi, G., Pontremoli, R., Viazzi, F., Facchetti, R., Ferri, C., Bernardino, B., Galletti, F., D’Elia, L., Palatini, P., Casiglia, E., Tikhonoff, V., Barbagallo, C. M., Verdecchia, P., Masi, S., Mallamaci, F., Cirillo, M., Rattazzi, M., Pauletto, P., Cirillo, P., Gesualdo, L., Mazza, A., Volpe, M., Tocci, G., Iaccarino, G., Nazzaro, P., Lippa, L., Parati, G., Dell’Oro, R., Quarti-Trevano, F., Grassi, G., Virdis, A., and Borghi, C.

Published
2020
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30. Serum uric acid and left ventricular mass index independently predict cardiovascular mortality: The uric acid right for heart health (URRAH) project

Author

Muiesan, M, Agabiti Rosei, C, Paini, A, Casiglia, E, Cirillo, M, Grassi, G, Iaccarino, G, Mallamaci, F, Maloberti, A, Mazza, A, Mengozzi, A, Palatini, P, Parati, G, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Tikhonoff, V, Tocci, G, Borghi, C, Angeli, F, Barbagallo, C, Bombelli, M, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, P, Dell'Oro, R, Medica, C, D'Elia, L, Desideri, G, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Lippa, L, Masi, S, Masulli, M, Nazzaro, P, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Ungar, A, Verdecchia, P, Viazzi, F, Virdis, A, Volpe, M, Muiesan M. L., Agabiti Rosei C., Paini A., Casiglia E., Cirillo M., Grassi G., Iaccarino G., Mallamaci F., Maloberti A., Mazza A., Mengozzi A., Palatini P., Parati G., Reboldi G., Rivasi G., Russo E., Salvetti M., Tikhonoff V., Tocci G., Borghi C., Angeli F., Barbagallo C. M., Bombelli M., Cianci R., Ciccarelli M., Cicero A. F. G., Cirillo P., Dell'Oro R., Medica C., D'Elia L., Desideri G., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Lippa L., Masi S., Masulli M., Nazzaro P., Pontremoli R., Quarti-Trevano F., Rattazzi M., Ungar A., Verdecchia P., Viazzi F., Virdis A., Volpe M., Muiesan, M, Agabiti Rosei, C, Paini, A, Casiglia, E, Cirillo, M, Grassi, G, Iaccarino, G, Mallamaci, F, Maloberti, A, Mazza, A, Mengozzi, A, Palatini, P, Parati, G, Reboldi, G, Rivasi, G, Russo, E, Salvetti, M, Tikhonoff, V, Tocci, G, Borghi, C, Angeli, F, Barbagallo, C, Bombelli, M, Cianci, R, Ciccarelli, M, Cicero, A, Cirillo, P, Dell'Oro, R, Medica, C, D'Elia, L, Desideri, G, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Lippa, L, Masi, S, Masulli, M, Nazzaro, P, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Ungar, A, Verdecchia, P, Viazzi, F, Virdis, A, Volpe, M, Muiesan M. L., Agabiti Rosei C., Paini A., Casiglia E., Cirillo M., Grassi G., Iaccarino G., Mallamaci F., Maloberti A., Mazza A., Mengozzi A., Palatini P., Parati G., Reboldi G., Rivasi G., Russo E., Salvetti M., Tikhonoff V., Tocci G., Borghi C., Angeli F., Barbagallo C. M., Bombelli M., Cianci R., Ciccarelli M., Cicero A. F. G., Cirillo P., Dell'Oro R., Medica C., D'Elia L., Desideri G., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Lippa L., Masi S., Masulli M., Nazzaro P., Pontremoli R., Quarti-Trevano F., Rattazzi M., Ungar A., Verdecchia P., Viazzi F., Virdis A., and Volpe M.

Abstract

Unlabelled: A relationship between serum uric acid (SUA) and cardiovascular (CV) events has been documented in the Uric Acid Right for Heart Health (URRAH) study. Aim: of this study was to investigate the association between SUA and left ventricular mass index (LVMI) and whether SUA and LVMI or their combination may predict the incidence of CV death. Methods: Subjects with echocardiographic measurement of LVMI included in the URRAH study (n=10733) were part of this analysis. LV hypertrophy (LVH) was defined as LVMI > 95 g/m2 in women and 115 g/m2 in men. Results: A significant association between SUA and LVMI was observed in multiple regression analysis in men: beta 0,095, F 5.47, P< 0.001 and women: beta 0,069, F 4.36, P<0.001. During follow-up 319 CV deaths occurred. Kaplan-Meier curves showed a significantly poorer survival rate in subjects with higher SUA (> 5.6 mg/dl in men and 5.1 mg/dl in women) and LVH (log-rank chi-square 298.105; P<0.0001). At multivariate Cox regression analysis in women LVH alone and the combination of higher SUA and LVH but not hyperuricemia alone, were associated with a higher risk of CV death, while in men hyperuricemia without LVH, LVH without hyperuricemia and their combination were all associated with a higher incidence of CV death. Conclusions: Our findings demonstrate that SUA is independently associated with LVMI and suggest that the combination of hyperuricemia with LVH is an independent and powerful predictor for CV death both in men and women.

Published
2023

31. Hypertensive emergencies and urgencies: a preliminary report of the ongoing Italian multicentric study ERIDANO

Author

Vallelonga, F, Cesareo, M, Menon, L, Leone, D, Lupia, E, Morello, F, Totaro, S, Aggiusti, C, Salvetti, M, Ioverno, A, Maloberti, A, Fucile, I, Cipollini, F, Nesti, N, Mancusi, C, Pende, A, Giannattasio, C, Muiesan, M, Milan, A, Vallelonga F., Cesareo M., Menon L., Leone D., Lupia E., Morello F., Totaro S., Aggiusti C., Salvetti M., Ioverno A., Maloberti A., Fucile I., Cipollini F., Nesti N., Mancusi C., Pende A., Giannattasio C., Muiesan M. L., Milan A., Vallelonga, F, Cesareo, M, Menon, L, Leone, D, Lupia, E, Morello, F, Totaro, S, Aggiusti, C, Salvetti, M, Ioverno, A, Maloberti, A, Fucile, I, Cipollini, F, Nesti, N, Mancusi, C, Pende, A, Giannattasio, C, Muiesan, M, Milan, A, Vallelonga F., Cesareo M., Menon L., Leone D., Lupia E., Morello F., Totaro S., Aggiusti C., Salvetti M., Ioverno A., Maloberti A., Fucile I., Cipollini F., Nesti N., Mancusi C., Pende A., Giannattasio C., Muiesan M. L., and Milan A.

Abstract

Hypertensive urgencies (HU) and hypertensive emergencies (HE) are challenges for the Emergency Department (ED). A prospective multicentre study is ongoing to characterize patients with acute hypertensive disorders, prevalence of subclinical hypertension-mediated organ damage (HMOD), short- and long-term prognosis; this is a preliminary report. Patients admitted to the ED with symptomatic blood pressure (BP) ≥180/110 mmHg were enrolled. They were managed by ED personnel according to their clinical presentations. Subsequently they underwent clinical evaluation and subclinical HMOD assessment at a Hypertension Centre within 72 h from enrolment. 122 patients were included in this report. Mean age was 60.7±13.9 years, 52.5% were females. 18 (14.8%) patients were diagnosed with HE, 108 (88.5%) with HU. There were no differences in gender, BMI, and cardiovascular comorbidities between groups. At ED discharge, 66.7% and 93.6% (p = 0.003) of HE and HU patients, respectively, had BP < 180/110 mmHg. After 72 h, 34.4% of patients resulted normotensive; 35.2%, 22.1%, and 8.2% had hypertension grade 1, 2, and 3, respectively. Patients with uncontrolled BP at office evaluation had higher vascular HMOD (49.1 vs. 25.9%, p = 0.045). Cardiac (60 vs. 34%, p = 0.049), renal (27.8 vs. 9.6%, p = 0.010) and cerebral (100 vs. 21%, p < 0.001) HMOD was more frequent in HE compared to HU group. HE showed greater cardiac, renal, and cerebral subclinical HMOD, compared to HU. 72-hours BP control is not associated with different HMOD, except for vascular HMOD; therefore, proper comprehensive examination after discharge from the ED could provide added value in cardiovascular risk stratification of such patients.

Published
2023

35. Intrinsic filtering errors of Lagrangian particle tracking in LES flow fields

Author

Bianco, F., Chibbaro, S., Marchioli, C., Salvetti, M. V., and Soldati, A.

Subjects
Physics - Fluid Dynamics
Abstract

Large-Eddy Simulations (LES) of two-phase turbulent flows exhibit quantitative differences in particle statistics if compared to Direct Numerical Simulations (DNS) which, in the context of the present study, is considered the exact reference case. Differences are primarily due to filtering, a fundamental intrinsic feature of LES. Filtering the fluid velocity field yields approximate computation of the forces acting on particles and, in turn, trajectories that are inaccurate when compared to those of DNS. In this paper, we focus precisely on the filtering error for which we quantify a lower bound. To this aim, we use a DNS database of inertial particle dispersion in turbulent channel flow and we perform a-priori tests in which the error purely due to filtering is singled out removing error accumulation effects, which would otherwise lead to progressive divergence between DNS and LES particle trajectories. By applying filters of different type and width at varying particle inertia, we characterize the statistical properties of the filtering error as a function of the wall distance. Results show that filtering error is stochastic and has a non-Gaussian distribution. In addition, the distribution of the filtering error depends strongly on the wall-normal coordinate being maximum in the buffer region. Our findings provide insight on the effect of subgrid-scale velocity field on the force driving the particles, and establish the requirements which a LES model must satisfy to predict correctly the velocity and the trajectory of inertial particles., Comment: 39 pages, 1 table, 12 figures, submitted to Physics of Fluids

Published
2011
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36. Some issues concerning Large-Eddy Simulation of inertial particle dispersion in turbulent bounded flows

Author

Marchioli, C., Salvetti, M. V., and Soldati, A.

Subjects
Physics - Fluid Dynamics
Abstract

The problem of an accurate Eulerian-Lagrangian modeling of inertial particle dispersion in Large Eddy Simulation (LES) of turbulent wall-bounded flows is addressed. We run Direct Numerical Simulation (DNS) for turbulent channel flow at shear Reynolds numbers equal to 150 and 300 and corresponding a-priori and a-posteriori LES on differently coarse grids. We then tracked swarms of different inertia particles and we examined the influence of filtering and of Sub-Grid Scale (SGS) modeling for the fluid phase on particle velocity and concentration statistics. We also focused on how particle preferential segregation is predicted by LES. Results show that even ``well-resolved'' LES is unable to reproduce the physics as demonstrated by DNS, both for particle accumulation at the wall and for particle preferential segregation. Inaccurate prediction is observed for the entire range of particles considered in this study, even when the particle response time is much larger than the flow timescales not resolved in LES. Both a-priori and a-posteriori tests indicate that recovering the level of fluid and particle velocity fluctuations is not enough to have accurate prediction of near-wall accumulation and local segregation. This may suggest that reintroducing the correct amount of higher-order moments of the velocity fluctuations is also a key point for SGS closure models for the particle equation. Another important issue is the presence of possible flow Reynolds number effects on particle dispersion. Our results show that, in small Reynolds number turbulence and in the case of heavy particles, the shear fluid velocity is a suitable scaling parameter to quantify these effects.

Published
2008
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42. Identification of a plausible serum uric acid cut-off value as prognostic marker of stroke: the Uric Acid Right for Heart Health (URRAH) study

Author

Tikhonoff, V, Casiglia, E, Spinella, P, Barbagallo, C, Bombelli, M, Cicero, A, Cirillo, M, Cirillo, P, Desideri, G, D'Elia, L, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Iaccarino, G, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Rivasi, G, Salvetti, M, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Virdis, A, Volpe, M, Grassi, G, Borghi, C, Tikhonoff V., Casiglia E., Spinella P., Barbagallo C. M., Bombelli M., Cicero A. F. G., Cirillo M., Cirillo P., Desideri G., D'elia L., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Iaccarino G., Mallamaci F., Maloberti A., Masi S., Mazza A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Rivasi G., Salvetti M., Tocci G., Ungar A., Verdecchia P., Viazzi F., Virdis A., Volpe M., Grassi G., Borghi C., Tikhonoff, V, Casiglia, E, Spinella, P, Barbagallo, C, Bombelli, M, Cicero, A, Cirillo, M, Cirillo, P, Desideri, G, D'Elia, L, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Iaccarino, G, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Rivasi, G, Salvetti, M, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Virdis, A, Volpe, M, Grassi, G, Borghi, C, Tikhonoff V., Casiglia E., Spinella P., Barbagallo C. M., Bombelli M., Cicero A. F. G., Cirillo M., Cirillo P., Desideri G., D'elia L., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Iaccarino G., Mallamaci F., Maloberti A., Masi S., Mazza A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Rivasi G., Salvetti M., Tocci G., Ungar A., Verdecchia P., Viazzi F., Virdis A., Volpe M., Grassi G., and Borghi C.

Abstract

The Working Group on Uric Acid and Cardiovascular Risk of the Italian Society of Hypertension conceived and designed an ad hoc study aimed at searching for prognostic cut-off values of serum uric acid (SUA) in predicting combined (fatal and non-fatal) cerebrovascular (CBV) events in the whole database. The URic acid Right for heArt Health study is a nationwide, multicenter, observational cohort study involving data on subjects aged 18–95 years recruited on a regional community basis from all the territory of Italy under the patronage of the Italian Society of Hypertension with a mean follow-up period of 120.7 ± 61.8 months. A total of 14,588 subjects were included in the analysis. A prognostic cut-off value of SUA able to discriminate combined CBV events (>4.79 mg/dL or >284.91 µmol/L) was identified by means of receiver operating characteristic curve in the whole database. Multivariate Cox regression analysis adjusted for confounders (age, sex, arterial hypertension, diabetes, chronic kidney disease, smoking habit, ethanol intake, body mass index, low-density lipoprotein cholesterol, and use of diuretics) identified an independent association between SUA and combined CBV events in the whole database (HR 1.249, 95% confidence interval, 1.041–1.497, p = 0.016). The results of the present study confirm that SUA is an independent risk marker for CBV events after adjusting for potential confounding variables, including arterial hypertension, and demonstrate that >4.79 mg/dL is a valid prognostic cut-off value.

Published
2022

43. Disease-Modifying Treatments and Time to Loss of Ambulatory Function in Patients with Primary Progressive Multiple Sclerosis

Author

Portaccio, E, Fonderico, M, Iaffaldano, P, Pasto, L, Razzolini, L, Bellinvia, A, De Luca, G, Ragonese, P, Patti, F, Brescia Morra, V, Cocco, E, Sola, P, Inglese, M, Lus, G, Pozzilli, C, Maimone, D, Lugaresi, A, Gazzola, P, Comi, G, Pesci, I, Spitaleri, D, Rezzonico, M, Vianello, M, Avolio, C, Logullo, F, Granella, F, Salvetti, M, Zaffaroni, M, Lucisano, G, Filippi, M, Trojano, M, Amato, M, Cavaletti, G, Portaccio E., Fonderico M., Iaffaldano P., Pasto L., Razzolini L., Bellinvia A., De Luca G., Ragonese P., Patti F., Brescia Morra V., Cocco E., Sola P., Inglese M., Lus G., Pozzilli C., Maimone D., Lugaresi A., Gazzola P., Comi G., Pesci I., Spitaleri D., Rezzonico M., Vianello M., Avolio C., Logullo F. O., Granella F., Salvetti M., Zaffaroni M., Lucisano G., Filippi M., Trojano M., Amato M. P., Cavaletti G., Portaccio, E, Fonderico, M, Iaffaldano, P, Pasto, L, Razzolini, L, Bellinvia, A, De Luca, G, Ragonese, P, Patti, F, Brescia Morra, V, Cocco, E, Sola, P, Inglese, M, Lus, G, Pozzilli, C, Maimone, D, Lugaresi, A, Gazzola, P, Comi, G, Pesci, I, Spitaleri, D, Rezzonico, M, Vianello, M, Avolio, C, Logullo, F, Granella, F, Salvetti, M, Zaffaroni, M, Lucisano, G, Filippi, M, Trojano, M, Amato, M, Cavaletti, G, Portaccio E., Fonderico M., Iaffaldano P., Pasto L., Razzolini L., Bellinvia A., De Luca G., Ragonese P., Patti F., Brescia Morra V., Cocco E., Sola P., Inglese M., Lus G., Pozzilli C., Maimone D., Lugaresi A., Gazzola P., Comi G., Pesci I., Spitaleri D., Rezzonico M., Vianello M., Avolio C., Logullo F. O., Granella F., Salvetti M., Zaffaroni M., Lucisano G., Filippi M., Trojano M., Amato M. P., and Cavaletti G.

Abstract

Importance: Except for ocrelizumab, treatment options in primary progressive multiple sclerosis (PPMS) are lacking. Objective: To investigate the effectiveness of DMTs on the risk of becoming wheelchair dependent in a real-world population of patients with PPMS. Design, Setting, and Participants: This was a multicenter, observational, retrospective, comparative effectiveness research study. Data were extracted on November 28, 2018, from the Italian multiple sclerosis register and analyzed from June to December 2021. Mean study follow-up was 11 years. Included in the study cohort were patients with a diagnosis of PPMS and at least 3 years of Expanded Disability Status Scale (EDSS) evaluations and 3 years of follow-up. Main Outcomes and Measures: The risk of reaching an EDSS score of 7.0 was assessed through multivariable Cox regression models. Exposures: Patients who received DMT before the outcome were considered treated. DMT was assessed as a time-dependent variable and by class of DMT (moderately and highly effective). Results: From a total of 3298 patients with PPMS, 2633 were excluded because they did not meet the entry criteria for the phase 3, multicenter, randomized, parallel-group, double-blind, placebo-controlled study to evaluate the efficacy and safety of ocrelizumab in adults with PPMS (ORATORIO) trial. Among the remaining 665 patients (mean [SD] age, 43.0 [10.7] years; 366 female patients [55.0%]), 409 were further selected for propensity score matching (288 treated and 121 untreated patients). In the matched cohort, during the study follow-up, 37% of patients (152 of 409) reached an EDSS score of 7.0 after a mean (SD) follow-up of 10.6 (5.6) years. A higher EDSS score at baseline (adjusted hazard ratio [aHR], 1.32; 95% CI, 1.13-1.55; P <.001), superimposed relapses (aHR, 2.37; 95% CI, 1.24-4.54; P =.009), and DMT exposure (aHR, 1.75; 95% CI, 1.04-2.94; P =.03) were associated with a higher risk of an EDSS score of 7.0, whereas the interaction term b

Published
2022

44. Serum uric acid levels threshold for mortality in diabetic individuals: The URic acid Right for heArt Health (URRAH) project

Author

Masulli, M, D'Elia, L, Angeli, F, Barbagallo, C, Bilancio, G, Bombelli, M, Bruno, B, Casiglia, E, Cianci, R, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, Desideri, G, Ferri, C, Gesualdo, L, Giannattasio, C, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Salvetti, M, Tikhonoff, V, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Virdis, A, Volpe, M, Borghi, C, Galletti, F, Masulli M., D'Elia L., Angeli F., Barbagallo C. M., Bilancio G., Bombelli M., Bruno B., Casiglia E., Cianci R., Cicero A. F. G., Cirillo M., Cirillo P., Dell'Oro R., Desideri G., Ferri C., Gesualdo L., Giannattasio C., Grassi G., Iaccarino G., Lippa L., Mallamaci F., Maloberti A., Masi S., Mazza A., Mengozzi A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Reboldi G., Rivasi G., Salvetti M., Tikhonoff V., Tocci G., Ungar A., Verdecchia P., Viazzi F., Virdis A., Volpe M., Borghi C., Galletti F., Masulli, M, D'Elia, L, Angeli, F, Barbagallo, C, Bilancio, G, Bombelli, M, Bruno, B, Casiglia, E, Cianci, R, Cicero, A, Cirillo, M, Cirillo, P, Dell'Oro, R, Desideri, G, Ferri, C, Gesualdo, L, Giannattasio, C, Grassi, G, Iaccarino, G, Lippa, L, Mallamaci, F, Maloberti, A, Masi, S, Mazza, A, Mengozzi, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Reboldi, G, Rivasi, G, Salvetti, M, Tikhonoff, V, Tocci, G, Ungar, A, Verdecchia, P, Viazzi, F, Virdis, A, Volpe, M, Borghi, C, Galletti, F, Masulli M., D'Elia L., Angeli F., Barbagallo C. M., Bilancio G., Bombelli M., Bruno B., Casiglia E., Cianci R., Cicero A. F. G., Cirillo M., Cirillo P., Dell'Oro R., Desideri G., Ferri C., Gesualdo L., Giannattasio C., Grassi G., Iaccarino G., Lippa L., Mallamaci F., Maloberti A., Masi S., Mazza A., Mengozzi A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Reboldi G., Rivasi G., Salvetti M., Tikhonoff V., Tocci G., Ungar A., Verdecchia P., Viazzi F., Virdis A., Volpe M., Borghi C., and Galletti F.

Abstract

Background and aim: The URRAH (URic acid Right for heArt Health) Study has identified cut-off values of serum uric acid (SUA) predictive of total mortality at 4.7 mg/dl, and cardiovascular (CV) mortality at 5.6 mg/dl. Our aim was to validate these SUA thresholds in people with diabetes. Methods and results: The URRAH subpopulation of people with diabetes was studied. All-cause and CV deaths were evaluated at the end of follow-up. A total of 2570 diabetic subjects were studied. During a median follow-up of 107 months, 744 deaths occurred. In the multivariate Cox regression analyses adjusted for several confounders, subjects with SUA ≥5.6 mg/dl had higher risk of total (HR: 1.23, 95%CI: 1.04–1.47) and CV mortality (HR:1.31, 95%CI:1.03–1.66), than those with SUA <5.6 mg/dl. Increased all-cause mortality risk was shown in participants with SUA ≥4.7 mg/dl vs SUA below 4.7 mg/dl, but not statistically significant after adjustment for all confounders. Conclusions: SUA thresholds previously proposed by the URRAH study group are predictive of total and CV mortality also in people with diabetes. The threshold of 5.6 mg/dl can predict both total and CV mortality, and so is candidate to be a clinical cut-off for the definition of hyperuricemia in patients with diabetes.

Published
2022

45. Reduction of High Cholesterol Levels by a Preferably Fixed-Combination Strategy as the First Step in the Treatment of Hypertensive Patients with Hypercholesterolemia and High/Very High Cardiovascular Risk: A Consensus Document by the Italian Society of Hypertension

Author

Grassi, G, Del Pinto, R, Agabiti Rosei, C, Agnoletti, D, Borghi, C, Cicero, A, De Ciuceis, C, Desideri, G, Grassi, D, Muiesan, M, Paini, A, Salvetti, M, Tocci, G, Veglio, F, Volpe, M, Ferri, C, Grassi G., Del Pinto R., Agabiti Rosei C., Agnoletti D., Borghi C., Cicero A. F. G., De Ciuceis C., Desideri G., Grassi D., Muiesan M. L., Paini A., Salvetti M., Tocci G., Veglio F., Volpe M., Ferri C., Grassi, G, Del Pinto, R, Agabiti Rosei, C, Agnoletti, D, Borghi, C, Cicero, A, De Ciuceis, C, Desideri, G, Grassi, D, Muiesan, M, Paini, A, Salvetti, M, Tocci, G, Veglio, F, Volpe, M, Ferri, C, Grassi G., Del Pinto R., Agabiti Rosei C., Agnoletti D., Borghi C., Cicero A. F. G., De Ciuceis C., Desideri G., Grassi D., Muiesan M. L., Paini A., Salvetti M., Tocci G., Veglio F., Volpe M., and Ferri C.

Abstract

The primary and secondary prevention strategies of atherosclerotic cardiovascular disease (ASCVD) largely rely on the management of arterial hypertension and hypercholesterolemia, two major risk factors possibly linked in pathophysiological terms by the renin-angiotensin system activation and that often coexist in the same patient synergistically increasing cardiovascular risk. The classic pharmacologic armamentarium to reduce hypercholesterolemia has been based in the last two decades on statins, ezetimibe, and bile acid sequestrants. More recently numerous novel, additive resources targeting different pathways in LDL cholesterol metabolism have emerged. They include drugs targeting the proprotein convertase subtilisin/kexin type 9 (PCSK9) (inhibitory antibodies; small-interfering RNAs), the angiopoietin-like protein 3 (inhibitory antibodies), and the ATP-citrate lyase (the inhibitory oral prodrug, bempedoic acid), with PCSK9 inhibitors and bempedoic acid already approved for clinical use. With the potential of at least halving LDL cholesterol levels faster and more effectively with the addition of ezetimibe than with high-intensity statin alone, and even more with the addition of the novel available drugs, this document endorsed by the Italian Society of Hypertension proposes a novel paradigm for the treatment of the hypertensive patient with hypercholesterolemia at high and very high ASCVD risk. Our proposal is based on the use as a first-line of a preferably fixed combination of lipid-lowering drugs, under the motto “Our goal: achieve control. No setback: combine and check”.

Published
2022

46. The association of uric acid with mortality modifies at old age: Data from the uric acid right for heart health (URRAH) study

Author

Ungar, A, Rivasi, G, Di Bari, M, Virdis, A, Casiglia, E, Masi, S, Mengozzi, A, Barbagallo, C, Bombelli, M, Bruno, B, Cicero, A, Cirillo, M, Cirillo, P, Desideri, G, D'Elia, L, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Iaccarino, G, Ciccarelli, M, Lippa, L, Mallamaci, F, Maloberti, A, Mazza, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Salvetti, M, Tikhonoff, V, Tocci, G, Cianci, R, Verdecchia, P, Viazzi, F, Volpe, M, Grassi, G, Borghi, C, Ungar A., Rivasi G., Di Bari M., Virdis A., Casiglia E., Masi S., Mengozzi A., Barbagallo C. M., Bombelli M., Bruno B., Cicero A. F. G., Cirillo M., Cirillo P., Desideri G., D'elia L., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Iaccarino G., Ciccarelli M., Lippa L., Mallamaci F., Maloberti A., Mazza A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Salvetti M., Tikhonoff V., Tocci G., Cianci R., Verdecchia P., Viazzi F., Volpe M., Grassi G., Borghi C., Ungar, A, Rivasi, G, Di Bari, M, Virdis, A, Casiglia, E, Masi, S, Mengozzi, A, Barbagallo, C, Bombelli, M, Bruno, B, Cicero, A, Cirillo, M, Cirillo, P, Desideri, G, D'Elia, L, Ferri, C, Galletti, F, Gesualdo, L, Giannattasio, C, Iaccarino, G, Ciccarelli, M, Lippa, L, Mallamaci, F, Maloberti, A, Mazza, A, Muiesan, M, Nazzaro, P, Palatini, P, Parati, G, Pontremoli, R, Quarti-Trevano, F, Rattazzi, M, Salvetti, M, Tikhonoff, V, Tocci, G, Cianci, R, Verdecchia, P, Viazzi, F, Volpe, M, Grassi, G, Borghi, C, Ungar A., Rivasi G., Di Bari M., Virdis A., Casiglia E., Masi S., Mengozzi A., Barbagallo C. M., Bombelli M., Bruno B., Cicero A. F. G., Cirillo M., Cirillo P., Desideri G., D'elia L., Ferri C., Galletti F., Gesualdo L., Giannattasio C., Iaccarino G., Ciccarelli M., Lippa L., Mallamaci F., Maloberti A., Mazza A., Muiesan M. L., Nazzaro P., Palatini P., Parati G., Pontremoli R., Quarti-Trevano F., Rattazzi M., Salvetti M., Tikhonoff V., Tocci G., Cianci R., Verdecchia P., Viazzi F., Volpe M., Grassi G., and Borghi C.

Abstract

Objectives: In older individuals, the role of serum uric acid (SUA) as risk factor for mortality is debated. This study investigated the association of SUA with all-cause and cardiovascular (CV) mortality in older adults participating in the large multicentre observational uric acid right for heart health (URRAH) study. Methods: Eight thousand URRAH participants aged 65R were included in the analysis. The predictive role of SUA was assessed using Cox regression models stratified according to the cut-off age of 75. SUA was tested as continuous and categorical variable (age-specific quartiles). The prognostic threshold of SUA for mortality was analysed using receiver operating characteristic curves. Results: Among participants aged 65–74, multivariate Cox regression analysis adjusted for CV risk factors and comorbidities identified an independent association of SUA with both all-cause mortality (hazard ratio [HR] 1.169, 95% confidence interval [CI] 1.107–1.235) and CV mortality (HR 1.146, 95% CI 1.064–1.235). The cut-off value of 4.8mg/dl discriminated mortality status. In participants aged 75R, we observed a J-shaped relationship of SUA with all-cause and CV mortality, with risk increasing at extreme SUA levels. Conclusions: These results confirmed the predictive role of SUA for all-cause and CV mortality in older adults, while revealing considerable age-related differences. Mortality risk increased at higher SUA levels in participants aged 65–74, with a prognostic threshold of 4.8mg/dl. The relationship between SUA and mortality was J-shaped in oldest participants. Large interventional studies are needed to clarify the benefits and possible risks of urate-lowering treatments in older adults.

Published
2022

47. Erratum: Gender differences in predictors of intensive care units admission among COVID-19 patients: The results of the SARS-RAS study of the Italian Society of Hypertension (PLoS ONE (2020) 15:10 (e0237297) DOI: 10.1371/journal.pone.0237297)

Author

Iaccarino G., Iaccarino, G, Grassi, G, Borghi, C, Carugo, S, Fallo, F, Ferri, C, Giannattasio, C, Grassi, D, Letizia, C, Mancusi, C, Minuz, P, Perlini, S, Pucci, G, Rizzoni, D, Salvetti, M, Sarzani, R, Sechi, L, Veglio, F, Volpe, M, Iaccarino G., Grassi G., Borghi C., Carugo S., Fallo F., Ferri C., Giannattasio C., Grassi D., Letizia C., Mancusi C., Minuz P., Perlini S., Pucci G., Rizzoni D., Salvetti M., Sarzani R., Sechi L., Veglio F., Volpe M., Iaccarino G., Iaccarino, G, Grassi, G, Borghi, C, Carugo, S, Fallo, F, Ferri, C, Giannattasio, C, Grassi, D, Letizia, C, Mancusi, C, Minuz, P, Perlini, S, Pucci, G, Rizzoni, D, Salvetti, M, Sarzani, R, Sechi, L, Veglio, F, Volpe, M, Iaccarino G., Grassi G., Borghi C., Carugo S., Fallo F., Ferri C., Giannattasio C., Grassi D., Letizia C., Mancusi C., Minuz P., Perlini S., Pucci G., Rizzoni D., Salvetti M., Sarzani R., Sechi L., Veglio F., and Volpe M.

Abstract

There is an error in the third sentence of the second paragraph of the Introduction section of this article [1]. Prior to the publication of this article [1], reference 6 was retracted by The New England Journal of Medicine and should not have been cited [2]. The correct reference is: WHO. Gender and COVID-19: Advocacy brief [Internet]. 2020 [cited 2021 Jun 10]. Available from: https://www.who.int/publications/i/item/WHO-2019-nCoV-Advocacy_brief-Gender2020.1 As a result of this correction to the references, the following text in the second paragraph of the discussion is removed: “[odds ratio 0.79 (CI 0.65–0.95)] in an extensive observational database collecting patients from Asia, Europe, and the United States.” The authors provide the following additional clarifications: As stated in the article’s Discussion, the study design does not allow conclusions to be drawn about causal relationships. As such, the authors provide revised wording for the first sentence of the Conclusions section of the Abstract, and the first sentence of the Conclusions section of the Discussion. The correct sentences are, respectively, “Our study demonstrates that gender may be the primary determinant of the disease’s severity among COVID-19” and “Our study demonstrates a possible gender effect for women in COVID-19 that are protected from more severe clinical presentations of the disease.” In the study registry [3], the registered timeframe for the secondary outcome “Number and type of anthropometric and clinical parameters that associate with COVID19 and COVID-19 severity” was 3 months. The article reports a shorter observation period between March 9th and April 29th 2020. The authors wish to clarify that the study design included a steering committee that performed an interim analysis. The number of required patients was collected more quickly than expected.

Published
2022

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