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Ragonese M, Pinto F, Foschi N, Dibitetto F, Akhundov A, Distante F, Bassi P. Endoneedle laser lithotripsy during percutaneous nephrolitotomy: The advantage of ecirs in the management of intra-operative complications. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)00099-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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2
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Medeiros Garcia Alcântara J, Distante F, Storti G, Moscatelli D, Morbidelli M, Sponchioni M. Current trends in the production of biodegradable bioplastics: The case of polyhydroxyalkanoates. Biotechnol Adv 2020; 42:107582. [DOI: 10.1016/j.biotechadv.2020.107582] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/08/2020] [Accepted: 06/18/2020] [Indexed: 12/31/2022]
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3
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Distante F, Collina S, Quadrelli P. A practical synthesis of (3-(phenanthren-9-yl)-4,5-dihydroisoxazol-5-yl)methyl (tert-butoxycarbonyl)-L-alaninate. ARKIVOC 2020. [DOI: 10.24820/ark.5550190.p011.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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4
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Celentano W, Neri G, Distante F, Li M, Messa P, Chirizzi C, Chaabane L, De Campo F, Metrangolo P, Baldelli Bombelli F, Cellesi F. Design of fluorinated hyperbranched polyether copolymers for 19F MRI nanotheranostics. Polym Chem 2020. [DOI: 10.1039/d0py00393j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
19F MRI contrast agents and drug nanocarriers based on fluorinated hyperbranched polyether copolymers.
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Affiliation(s)
- Wanda Celentano
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - Giulia Neri
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - Francesco Distante
- ETH Zurich
- Department of Chemistry and Applied Biosciences
- Institute of Chemical and Bioengineering
- CH-8093 Zurich
- Switzerland
| | - Min Li
- Renal Research Laboratory
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico
- 20122 Milan
- Italy
| | - Piergiorgio Messa
- Renal Research Laboratory
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico
- 20122 Milan
- Italy
| | - Cristina Chirizzi
- Institute of Experimental Neurology (INSPE) and Imaging (CIS)
- IRCCS San Raffaele Scientific Institute
- I-20132 Milan
- Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE) and Imaging (CIS)
- IRCCS San Raffaele Scientific Institute
- I-20132 Milan
- Italy
| | | | - Pierangelo Metrangolo
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | | | - Francesco Cellesi
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
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5
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Abstract
The effect of catalyst, substituent and leaving group on reactivity was probed experimentally and computationally rationalized.
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Affiliation(s)
- Elisabetta Brenna
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20133 Milano
- Italy
| | - Francesco Distante
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20133 Milano
- Italy
| | - Francesco G. Gatti
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20133 Milano
- Italy
| | - Giuseppe Gatti
- Dipartimento di Scienze Biomolecolari Scuola di Farmacia
- Università degli Studi di Urbino
- 61029 Urbino
- Italy
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Berardesca E, Distante F, Vignoli GP, Rabbiosi G. Acute irritant dermatitis: effect of short-term topical corticoid treatment. Curr Probl Dermatol 2015; 22:86-90. [PMID: 7587340 DOI: 10.1159/000424237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- E Berardesca
- Department of Dermatology, University of Pavia, Policlinico S. Matteo, Italy
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Distante F, Pagani V, Bonfigli A, Rigano L, Fluhr J. Objective Evaluation of the Placebo Effect in Cosmetic Treatments. A Randomized Controlled Study. Int J Cosmet Sci 2007. [DOI: 10.1111/j.1467-2494.2007.00355_3.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Distante F, Bacci PA, Carrera M. Efficacy of a multifunctional plant complex in the treatment of the so-called 'cellulite': clinical and instrumental evaluation. Int J Cosmet Sci 2006; 28:191-206. [DOI: 10.1111/j.1467-2494.2006.00319.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Distante F, Scalise F, Rona C, Bonfigli A, Fluhr JW, Berardesca E. Oral fish cartilage polysaccharides in the treatment of photoageing: biophysical findings. Int J Cosmet Sci 2002; 24:81-7. [DOI: 10.1046/j.1467-2494.2002.00127.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Two studies were performed to evaluate the influence of glycerol on the recovery of damaged stratum corneum barrier function. Measurements of transepidermal water loss and capacitance were conducted in a 3-day follow-up after tape stripping (study 1) and a 7-day follow-up after a barrier damage due to a repeated washing with sodium lauryl sulphate. In study 1 a faster barrier repair (transepidermal water loss) was monitored in glycerol-treated sites. Significant differences between glycerol open vs. untreated and glycerol occluded vs. untreated were observed at day 3. Stratum corneum hydration showed significantly higher values in the sites treated with glycerol+occlusion, compared with all other sites. In study 2 a faster barrier repair was seen in glycerol-treated sites, with significant differences against untreated and base-treated sites 7 days after the end of the treatment. Stratum corneum hydration showed highest values in the glycerol treated sites after 3 days of treatment. Glycerol creates a stimulus for barrier repair and improves the stratum corneum hydration; stratum corneum hydration is not strictly related to barrier homeostasis and can be optimized by different mechanisms and pathways. The observed effects were based on the modulation of barrier repair and were not biased by the humectant effect of glycerol. As the glycerol-induced recovery of barrier function and stratum corneum hydration were observed even 7 days after the end of treatment, glycerol can be regarded as a barrier stabilizing and moisturizing compound.
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Affiliation(s)
- J W Fluhr
- Department of Dermatology, Städt. Klinikum Karlsruhe, Germany
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11
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Fluhr JW, Lazzerini S, Distante F, Gloor M, Berardesca E. Effects of prolonged occlusion on stratum corneum barrier function and water holding capacity. Skin Pharmacol Appl Skin Physiol 1999; 12:193-8. [PMID: 10420139 DOI: 10.1159/000066243] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
PURPOSE OF THE STUDY We aimed to evaluate whether prolonged occlusion can induce stratum corneum barrier damage, alterations in stratum corneum hydration or water-holding capacity (WHC) lasting longer than the occlusion time. MATERIALS AND METHODS 12 subjects were occluded on the forearm for 24, 48, 72 and 96 h. Two hours after occlusion removal, transepidermal water loss (TEWL) and skin hydration were measured and a sorption-desorption test performed. RESULTS TEWL showed an increase reaching a plateau on day 2. Hydration and WHC did not show significant changes. Hygroscopicity showed the highest level on day 1, decreasing during the following days. A highly significant correlation between capacitance values and the WHC could be detected (p < 0.0001, r = 0.8206). No correlation could be detected between hygroscopicity and TEWL. CONCLUSIONS Prolonged occlusion induces barrier damage without skin dryness. Occlusion also induces an increased hygroscopicity. A correlation between these two findings could not be proven.
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Affiliation(s)
- J W Fluhr
- Department of Dermatology, Städtisches Klinikum Karlsruhe, Germany.
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Berardesca E, Distante F, Vignoli GP, Oresajo C, Green B. Alpha hydroxyacids modulate stratum corneum barrier function. Br J Dermatol 1997; 137:934-8. [PMID: 9470910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Alpha hydroxyacids (AHAs) are used to enhance stratum corneum desquamation and improve skin appearance. The purpose of this study was to evaluate whether some AHAs improve skin barrier function and prevent skin irritation. Eleven healthy subjects (aged 28 +/- 6 years, mean +/- SD) entered the study. Six test sites of 8 x 5 cm (four different AHAs, vehicle only (VE) and untreated control (UNT) were selected and randomly rotated on the volar arm and forearm. The four different AHAs at 8% concentration in base cream were glycolic acid (GA), lactic acid, tartaric acid (TA) and gluconolactone (GLU). The products were applied twice a day for 4 weeks (2 mg/cm2). At week 4, a 5% sodium lauryl sulphate (SLS) challenge patch test was performed under occlusion for 6 h (HillTop chamber, 18 mm wide) on each site. Barrier function and skin irritation were evaluated by means of evaporimetry (Servomed EP-1) and chromametry (a* value, Minolta CR200) weekly, and at 0, 24 and 48 h after SLS patch removal. No significant differences in transepidermal water loss (TEWL) and erythema were observed between the four AHAs at week 4. After SLS challenge, GLU- and TA-treated sites resulted in significantly lower TEWL compared with VE, UNT (P < 0.01) and GA (P < 0.05) both at 24 and 48 h. Similarly, a* values were significantly reduced after irritation in GLU- and TA-treated sites. This study shows that AHAs can modulate stratum corneum barrier function and prevent skin irritation; the effect is not equal for all AHAs, being more marked for the molecules characterized by antioxidant properties.
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Affiliation(s)
- E Berardesca
- Department of Dermatology, University of Pavia, IRCCS Policlinico S. Matteo, Italy
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Brazzelli V, Distante F, Perani G, Berardesca E. Effects of systemic treatment with statins on skin barrier function and stratum corneum water-holding capacity. Dermatology 1996; 192:214-6. [PMID: 8726633 DOI: 10.1159/000246368] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Topical application of inhibitors of HMGCoA reductase, the rate-limiting enzyme of cholesterol synthesis, has been shown to induce impairment of barrier function. OBJECTIVE Assessing whether oral administration of statins used for reducing blood levels of cholesterol induces functional changes in stratum corneum barrier. MATERIALS AND METHODS 69 subjects of both sexes under-going treatment for hypercholesterolemia (mean age 48 +/- 11 years) entered the study; 43 had been treated with simvastatin and 11 with pravastatin for 6 months; 15 only on dietary regimen served as controls. Efficiency of stratum corneum water barrier was evaluated by transepidermal water loss (TEWL) measurement using an evaporimeter; water-holding capacity of the stratum corneum was assessed by the sorption-desorption test measured by capacitance. Statistical analysis was performed using ANOVA. RESULTS No differences were found between the groups (simvastatin, pravastatin, diet) concerning both basal TEWL and the dynamic of water binding in the stratum corneum. CONCLUSIONS Prolonged treatment with cholesterol-lowering drugs based on inhibition of HMGCoA reductase does not alter the permeability barrier of the skin.
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Affiliation(s)
- V Brazzelli
- Department of Dermatology, University of Pavia, IRCCS Policlinico S. Matteo, Italy
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Abstract
Surfactant-induced irritant reactions may be elicited by several endogenous and exogenous factors. Among these, surfactant concentration, and duration and frequency of exposure play important rôles. The study focuses on the influence of water temperature in determining damage of the skin barrier. 10 subjects of both sexes entered the study. 4 areas (4 x 4 cm2) were randomly selected on the volar forearm and were treated with a daily open application of 5% sodium lauryl sulphate for 4 days. The solutions were at 3 temperatures: 4 degrees, 20 degrees and 40 degrees C. One site served as untreated control. On the 5th day, skin irritation was evaluated using transepidermal water loss (TEWL) measurements, erythema (a* value), skin reflectance (L* value), hydration (capacitance) and desquamation (stripping). The results show a significant effect of the solution's temperature in determining skin irritation (P < 0.001). Skin damage was higher in sites treated with warmer temperatures and a highly significant correlation (P < 0.001) between irritation and temperature was found. In conclusion, the study shows that water temperature during washing has an important effect on the onset of irritant contact dermatitis.
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Affiliation(s)
- E Berardesca
- Department of Dermatology, University of Pavia, IRCCS Policlinico S. Matteo, Italy
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Berardesca E, Distante F. Mechanisms of skin irritations. Curr Probl Dermatol 1995; 23:1-8. [PMID: 9035901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- E Berardesca
- Department of Dermatology, University of Pavia, IRCCS Policlinico S. Matteo, Italy
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Abstract
Irritant contact dermatitis (ICD) is a multifactorial disease, the onset and modulation of which depend on both endogenous and exogenous factors. Among the former, age, race, site, sex and history of dermatitis may all be important. Such variables can now readily be quantified by objective noninvasive techniques, such as measurement of transepidermal water loss (TEWL). Moreover, effects of irritants on the epidermis are related to the particular chemical properties of each molecule, contributing further to clinical heterogeneity. Release of cytokines and mediators may be initiated by a number of cells, including living keratinocytes and those of the stratum corneum, thus modulating inflammation and repair. Furthermore, differences in mechanisms of inflammation between acute and chronic ICD may exist, the former being characterized predominantly by inflammation, the latter by hyperproliferation and transient hyperkeratosis. These findings may explain the complexity and difficulty of investigating ICD. Better understanding and quantification of these mechanisms may lead to identification of high-risk individuals and more effective prevention and treatment.
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Affiliation(s)
- E Berardesca
- Department of Dermatology, University of Pavia, IRCCS Policlinico S. Matteo, Italy
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Berardesca E, Vignoli GP, Farinelli N, Vignini M, Distante F, Rabbiosi G. Non-invasive evaluation of topical calcipotriol versus clobetasol in the treatment of psoriasis. Acta Derm Venereol 1994; 74:302-4. [PMID: 7976093 DOI: 10.2340/0001555574302304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Topical treatment of psoriasis with calcipotriol has been proven effective. The efficacy of calcipotriol has been compared to that of topical corticoids in a number of studies using subjective visual scoring systems such as the PASI index. The purpose of this study was to compare, with objective data, the efficacy of calcipotriol and clobetasol propionate 0.05% in the treatment of plaque type psoriasis. Transepidermal water loss (TEWL) and laser Doppler velocimetry (LDV) were used to monitor restoration of water barrier and normalization of blood flow, respectively, in psoriatic plaques of the limbs of 24 male patients during 3 weeks of treatment. Data were compared to subjective evaluation using the PASI index of the same areas. Significant differences were recorded during treatment in both groups. The results correlated well with the PASI score. Clobetasol was faster in restoring barrier function than calcipotriol. However, no significant differences were detected between the two groups. The use of vitamin analogues may be effective in the topical treatment of psoriasis by normalizing skin biophysical parameters and minimizing the risks of side-effects induced by potent topical corticoids.
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Affiliation(s)
- E Berardesca
- Department of Dermatology, University of Pavia, IRCCS Policlinico S. Matteo, Italy
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