26
|
Caluori D, Gallo P. Case Report of Heterotopic Bone Formation in Metastatic Carcinoma of the Colon. TUMORI JOURNAL 2018; 65:345-51. [PMID: 111384 DOI: 10.1177/030089167906500310] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The case of an 83-year-old woman, who was operated on for an adenocarcinoma of the sigmoid colon and died with retroperitoneal metastases, is described. The postmortem examination showed widespread heterotopic bone formation in these metastases. Gastrointestinal cancers and their metastases are liable to calcify and ossify, and they do so more frequently than other malignant epithelial tumors. A search through the literature led to the discovery of 35 other cases of this type. The highest frequency of heterotopic bone formation occurs in cancers of the distal portion of the large intestine and in pulmonary and lymph node metastases. The results of the present case support the view that bone formation derives from the metaplasia of stromal fibroblasts into osteoblasts. The knowledge that gastrointestinal cancers can calcify and ossify has a definite diagnostic relevance for the radiologist and gastroenterologist.
Collapse
|
27
|
Conde MM, Rovere M, Gallo P. High precision determination of the melting points of water TIP4P/2005 and water TIP4P/Ice models by the direct coexistence technique. J Chem Phys 2017; 147:244506. [DOI: 10.1063/1.5008478] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
28
|
Pugliese P, Conde MM, Rovere M, Gallo P. Freezing Temperatures, Ice Nanotubes Structures, and Proton Ordering of TIP4P/ICE Water inside Single Wall Carbon Nanotubes. J Phys Chem B 2017; 121:10371-10381. [DOI: 10.1021/acs.jpcb.7b06306] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
29
|
Vespasiani-Gentilucci U, Vorini F, Carotti S, De Vincentis A, Galati G, Gallo P, Scopinaro N, Picardi A. Hepatic complications of bariatric surgery : the reverse side of the coin. Acta Gastroenterol Belg 2017; 80:505-513. [PMID: 29560647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Even if the jejunoileal bypass has been definitely abandoned due to the high rate of hepatic complications, cases of liver injury after the new bariatric procedures are still reported. We aimed to review the available literature concerning liver damage associated with the older and newer types of bariatric surgeries. METHODS An extensive literature search of MEDLINE was performed using different combinations of the following terms: "bariatric surgery OR biliopancreatic diversion OR jejunoileal bypass OR roux-en-y gastric bypass OR vertical banded gastroplasty OR laparoscopic adjustable gastric banding" AND "hepatic/liver damage OR hepatic/liver impairment OR hepatic/liver failure". RESULTS Although weight loss after bariatric surgery frequently induces an improvement of non-alcoholic fatty liver disease and non-alcoholic steatohepatitis, and even the regression of hepatic fibrosis, bariatric procedures have been also associated with cases of acute liver failure or of chronic liver disease evolving until cirrhosis. After the jejunoileal bypass has been definitely abandoned, most of the recently described cases concern biliopancreatic diversion with/without duodenal switch, but liver damage has been reported after almost all types of bariatric surgeries. Protein-calorie malnutrition, bacterial overgrowth, lipotoxicity and genetic background are likely to play a central role in the physiopathology of hepatic injury. CONCLUSIONS Understanding the inner mechanisms underlying acute or chronic liver injury after bariatric surgery can help in the prevention, early recognition and treatment of these rare but concrete cases.
Collapse
|
30
|
Nusca A, Albano M, Cavallaro C, Borrelli E, Palumo M, Proscia C, Lauria Pantano A, Manfrini S, Melfi R, Miglionico M, Ricottini E, Gallo P, Mangiacapra F, Pozzilli P, Di Sciascio G. 2870Glycemic variability assessed by continuous glucose monitoring and antiplatelet responsiveness in patients undergoing coronary stenting: results from the observational GLYVAR study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.2870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
31
|
Calic M, Jarlov C, Gallo P, Dwir B, Rudra A, Kapon E. Deterministic radiative coupling of two semiconductor quantum dots to the optical mode of a photonic crystal nanocavity. Sci Rep 2017. [PMID: 28642481 PMCID: PMC5481339 DOI: 10.1038/s41598-017-03989-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
A system of two site-controlled semiconductor quantum dots (QDs) is deterministically integrated with a photonic crystal membrane nano-cavity. The two QDs are identified via their reproducible emission spectral features, and their coupling to the fundamental cavity mode is established by emission co-polarization and cavity feeding features. A theoretical model accounting for phonon interaction and pure dephasing reproduces the observed results and permits extraction of the light-matter coupling constant for this system. The demonstrated approach offers a platform for scaling up the integration of QD systems and nano-photonic elements for integrated quantum photonics applications.
Collapse
|
32
|
Carnevali O, Notarstefano V, Olivotto I, Graziano M, Gallo P, Di Marco Pisciottano I, Vaccari L, Mandich A, Giorgini E, Maradonna F. Dietary administration of EDC mixtures: A focus on fish lipid metabolism. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 185:95-104. [PMID: 28208108 DOI: 10.1016/j.aquatox.2017.02.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 01/30/2017] [Accepted: 02/05/2017] [Indexed: 05/26/2023]
Abstract
Many man-made chemical compounds are recognized as endocrine disruptors and once released into the environment are likely to spread and bioaccumulate in wild species. Due to their lipophilic nature, these substances pass through the cell membrane or bind to specific receptors activating physiological responses that in the long run can cause reproductive impairment, physiological disorders, including the occurrence of metabolic syndromes. One significant source of contamination is represented by the consumption of polluted food. As a consequence, different environmental pollutants, with similar or different modes of action, can accumulate in organisms and biomagnify along the food web, finally targeting humans. The aim of this study was to analyze, under controlled conditions, the effects induced by the consumption of contaminated diets, focusing on the effects exerted at hepatic level. Juvenile seabream were fed for 21days a diet enriched with different combinations of pollutants, nonylphenol (NP), tert-octylphenol (t-OP) and bisphenol A (BPA). The different diets containing 5mg/kg bw of each contaminant, were formulated as follows: NP+tOP, BPA+NP, BPA+tOP and NP+BPA+tOP (NBO). EDCs, at the doses administered, showed low biomagnification factor (BMF), suggesting that these pollutants hardly accumulate in muscles. The results obtained at hepatic level pinpointed the steatotic effect of all the administered diets, associated to a modulation of the expression of genes involved in lipid metabolism (ppars, fas, lpl, and hsl). Results were compared to those obtained in previous studies in which fish were fed single pollutants evidencing that the administration of mixture of contaminants exerts a milder lipogenic effect, highlighting the contrasting/antagonistic interaction establishing among chemicals. Noteworthy was the setup of a new chromatographic method to detect the presence of the selected chemical in fish muscle and the application of Fourier Transform Infrared (FT-IR) analysis to evaluate pollutant-induced changes in the liver macromolecular building.
Collapse
|
33
|
De Marzio M, Camisasca G, Conde MM, Rovere M, Gallo P. Structural properties and fragile to strong transition in confined
water. J Chem Phys 2017; 146:084505. [DOI: 10.1063/1.4975624] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
34
|
De Marzio M, Camisasca G, Rovere M, Gallo P. Microscopic origin of the fragile to strong crossover in supercooled water: The role of activated processes. J Chem Phys 2017; 146:084502. [DOI: 10.1063/1.4975387] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
35
|
Puthenparampil M, Federle L, Miante S, Zito A, Toffanin E, Ruggero S, Ermani M, Pravato S, Poggiali D, Perini P, Rinaldi F, Gallo P. BAFF Index and CXCL13 levels in the cerebrospinal fluid associate respectively with intrathecal IgG synthesis and cortical atrophy in multiple sclerosis at clinical onset. J Neuroinflammation 2017; 14:11. [PMID: 28095856 PMCID: PMC5240243 DOI: 10.1186/s12974-016-0785-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 12/28/2016] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND B lymphocytes are thought to play a relevant role in multiple sclerosis (MS) pathology. The in vivo analysis of intrathecally produced B cell-related cytokines may help to clarify the mechanisms of B cell recruitment and immunoglobulin production within the central nervous system (CNS) in MS. METHODS Paired cerebrospinal fluid (CSF) and serum specimens from 40 clinically isolated syndrome suggestive of MS or early-onset relapsing-remitting MS patients (CIS/eRRMS) and 17 healthy controls (HC) were analyzed for the intrathecal synthesis of IgG (quantitative formulae and IgG oligoclonal bands, IgGOB), CXCL13, BAFF, and IL-21. 3D-FLAIR, 3D-DIR, and 3D-T1 MRI sequences were applied to evaluate white matter (WM) and gray matter (GM) lesions and global cortical thickness (gCTh). RESULTS Compared to HC, CIS/eRRMS having IgGOB (IgGOB+, 26 patients) had higher intrathecal IgG indexes (p < 0.01), lower values of BAFF Index (11.9 ± 6.1 vs 17.5 ± 5.2, p < 0.01), and higher CSF CXCL13 levels (27.7 ± 33.5 vs 0.9 ± 1.5, p < 0.005). In these patients, BAFF Index but not CSF CXCL13 levels inversely correlated with the intrathecal IgG synthesis (r > 0.5 and p < 0.05 for all correlations). CSF leukocyte counts were significantly higher in IgGOB+ compared to IgGOB- (p < 0.05) and HC (p < 0.01), and correlated to CSF CXCL13 concentrations (r 0.77, p < 0.001). The gCTh was significantly lower in patients with higher CSF CXCL13 levels (2.41 ± 0.1 vs 2.49 ± 0.1 mm, p < 0.05), while no difference in MRI parameters of WM and GM pathology was observed between IgGOB+ and IgGOB-. CONCLUSIONS The intrathecal IgG synthesis inversely correlated with BAFF Index and showed no correlation with CSF CXCL13. These findings seem to indicate that intrathecally synthesized IgG are produced by long-term PCs that have entered the CNS from the peripheral blood, rather than produced by PCs developed in the meningeal follicle-like structures (FLS). In this study, CXCL13 identifies a subgroup of MS patients characterized by higher leukocyte counts in the CSF and early evidence of cortical thinning, further suggesting a role for this chemokine as a possible marker of disease severity.
Collapse
|
36
|
Conde MM, Rovere M, Gallo P. Spontaneous NaCl-doped ice at seawater conditions: focus on the mechanisms of ion inclusion. Phys Chem Chem Phys 2017; 19:9566-9574. [DOI: 10.1039/c7cp00665a] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Cl− ion included in the lattice always substitutes not one but two water molecules favoring ice conduction.
Collapse
|
37
|
Tozzi-Ciancarelli M, Fedele F, Tozzi E, Di Massimo C, Oratore A, De Matteis G, D’Alfonso A, Troiani-Sevi E, Gallo P, Prencipe M. Age-dependent changes in human erythrocyte properties. Clin Hemorheol Microcirc 2016. [DOI: 10.3233/ch-1989-9611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
38
|
Cavallaro A, Sciacca V, Gallo P, Cisternino S, di Marzo L, Mingoli A, Alessi G, Stipa S. Pretreatment of Dacron Prostheses with Gelatin: Experimental Research and Clinical Evaluation. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/153857448902300202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Experimental evaluation of a new type of dacron graft, pretreated with mod ified mammalian gelatin, has been performed on the beagle dog. After grafting of the infrarenal aorta, dogs were monitored from three days to three months. Pretreatment with gelatin effectively avoided the need for preclotting and did not affect the normal healing of the prosthesis as compared with similarly tex tured not pretreated grafts. This graft, when applied in man as an abdominal aortic substitute, has yielded uniformly gratifying results (within a follow-up range of twenty to twenty-seven months).
Collapse
|
39
|
Jarlov C, Wodey É, Lyasota A, Calic M, Gallo P, Dwir B, Rudra A, Kapon E. Effect of Pure Dephasing and Phonon Scattering on the Coupling of Semiconductor Quantum Dots to Optical Cavities. PHYSICAL REVIEW LETTERS 2016; 117:076801. [PMID: 27563983 DOI: 10.1103/physrevlett.117.076801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Indexed: 06/06/2023]
Abstract
Using site-controlled semiconductor quantum dots (QDs) free of multiexcitonic continuum states, integrated with photonic crystal membrane cavities, we clarify the effects of pure dephasing and phonon scattering on exciton-cavity coupling in the weak-coupling regime. In particular, the observed QD-cavity copolarization and cavity mode feeding versus QD-cavity detuning are explained quantitatively by a model of a two-level system embedded in a solid-state environment.
Collapse
|
40
|
Puthenparampil M, Miante S, Federle L, Zanetta C, Toffanin E, Ruggero S, Rinaldi F, Gallo P. BAFF is decreased in the cerebrospinal fluid of multiple sclerosis at clinical onset. J Neuroimmunol 2016; 297:63-7. [DOI: 10.1016/j.jneuroim.2016.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/06/2016] [Accepted: 05/11/2016] [Indexed: 12/24/2022]
|
41
|
Camisasca G, De Marzio M, Corradini D, Gallo P. Two structural relaxations in protein hydration water and their dynamic crossovers. J Chem Phys 2016; 145:044503. [DOI: 10.1063/1.4959286] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|
42
|
Ghezzi A, Amato MP, Capobianco M, Gallo P, Marrosu G, Martinelli V, Milani N, Milanese C, Moiola L, Patti F, Pilato V, Pozzilli C, Trojano M, Zaffaroni M, Comi G. Disease-modifying drugs in childhood-juvenile multiple sclerosis: results of an Italian co-operative study. Mult Scler 2016; 11:420-4. [PMID: 16042224 DOI: 10.1191/1352458505ms1206oa] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Immunomodulatory drugs (IDs) (interferon beta (IFNβ) and glatiramer acetate (GA)) reduce relapse rate and disease progression in relapsing-remitting multiple sclerosis (RRMS) but extensive data are not available on the effectiveness and tolerability of these drugs in childhood or adolescence. The aim of this study was to evaluate the impact of IFNβ and GA in MS patients treated before 16 years of age. Methods: A research group (Immunomodulatory Treatment of Early onset MS (ITEMS)) was promoted in Italy to collect a large series of patients affected by clinically definite and RRMS and treated with IDs before 16 years of age. Fifteen centres recognized subjects suitable for inclusion: 76 patients (52 females) were collected with a mean age at onset of 12.4 (SD 2.5) years, a mean disease duration of 18.6 (SD 14.7) and a relapse rate of 3.1 (SD 2.9). Results: Results were evaluated in 65 (45 females) subjects with a pretreatment and a treatment duration >3 months: 38 were treated with IFNβ-1a once weekly (Avonex), 18 with IFNβ three times weekly (16 with Rebif, 2 with Betaferon) and nine with GA (Copaxone). The mean pretreatment period was respectively 20, 18 and 9.2 months. The treatment duration lasted respectively 23.3, 40.7 and 33.3 months. The mean annualized relapse rate decreased dramatically during the treatment: from 2.4 to 0.4 in the Avonex group, from 3.2 to 0.8 in the Rebif-Betaferon group and from 2.8 to 0.25 in the GA group. The mean final EDSS scores were respectively (in brackets the initial scores): 1.3 (1.4), 1.6 (1.8) and 0.6 (1.1). In the whole group, the final score was unchanged or reduced in all subjects except eight. Clinical side effects were recorded in 41/65 subjects (mainly in subjects treated with IFNβ), abnormal laboratory findings were observed in 13/65 subjects: they were transient in most cases. IFNβ was stopped in six cases: in four because of inefficacy and in two cases because of side effects. Conclusions: Sixty-five clinically definite MS subjects were treated during childhood or adolescence with IDs. The treatment reduced the relapse rate and the progression of the disease in most cases. Side effects were common in subjects treated with IFNβ, but were well tolerated in most cases.
Collapse
|
43
|
Sparano BM, Brecher MP, Gordon G, Iatropoulos MJ, King CD, Gallo P. Chemically Induced Hepatocellular Proliferative Changes in the Rat Without Evidence of Neoplastic Transformation,. Toxicol Pathol 2016. [DOI: 10.1177/019262338201000219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The hypothesis that hepatocellular proliferative changes give rise to autonomous, neoplastic lesions in rodents was tested in this study in which hepatoproliferative lesions induced in rats by feeding an experimental psychoactive drug, cyproximide, were examined at various times during the course of a 24 month study. A total of 610 male and female rats (Charles River Laboratories COBS®CD®(SD)BR, Wilmington, Mass.) were distributed into three groups. Each of two treatment groups contained 230 rats given 0.1% or 0.4% of cyproximide in the diet. One hundred and fifty rats were given a drug-free diet and served as controls. Five males and five females from each group were sacrificed for postmortem examination after 6, 12 and 20 months of drug diet feeding after which remaining rats were retained for recovery (nontreatment) periods of 18, 12 and 4 months, respectively. An additional 25 males and 25 females from each dose level were treated for 24 months and then sacrificed along with all surviving recovery and control rats. The results of this study demonstrated that the incidence of proliferative lesions was greater in the liver of treated rats (especially females) than in control rats; however, the incidence of hepatocellular neoplasms was the same in treated and control rats.
Collapse
|
44
|
Gallo P, Van Wijmeersch B. Overview of the management of relapsing-remitting multiple sclerosis and practical recommendations. Eur J Neurol 2016; 22 Suppl 2:14-21. [PMID: 26374509 DOI: 10.1111/ene.12799] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 06/05/2015] [Indexed: 11/29/2022]
Abstract
The initial phases of the clinical course of relapsing-remitting multiple sclerosis (MS) are characterized by a mainly inflammatory pathology which gives way to a largely neurodegenerative process as the disease evolves. As all currently available disease-modifying therapies aim to control inflammation, the window of opportunity for use is early in the disease course, specifically at the time of a clinically isolated syndrome suggestive of MS or in the early stages of relapsing-remitting MS. Approximately 30% of patients treated with first-line immunomodulators (interferon-β or glatiramer acetate) show a suboptimal response during the first 1-2 years and require a switch to an alternative therapy. It is recommended not to wait too long to switch in order to prevent disease progression. Patients with a poor prognosis in particular may require a timely switch to a second-line agent. Regular monitoring of disease and therapy in patients with MS is essential. In the first year after diagnosis, clinical evaluations (neurological status, symptomatic assessment, patient well-being) should be performed at baseline, 3, 6 and 12 months, and then every 6 months thereafter. Brain magnetic resonance imaging (MRI) should be performed every 6 months in the first year of treatment, and at least once yearly thereafter. A spinal cord MRI should be performed once yearly in patients presenting spinal symptoms.
Collapse
|
45
|
Peruzzi L, Gianoglio B, Pecoraro C, Alessandrella A, Murer L, Benetti E, Deschenes G, Materassi M, Gallo P, Lugani F, Ghiggeri G, Spasojevic Dimitrieva B, Jankauskiene A, Mizerska-Wasiak M, Lungu A, Coppo R. TO044A EUROPEAN REGISTRY OF HENOCH SCHOENLEINPURPURA NEPHRITIS IN CHILDREN TO DETECT RISK FACTORS FOR PROGRESSION. Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw151.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
46
|
De Marzio M, Camisasca G, Rovere M, Gallo P. Mode coupling theory and fragile to strong transition in supercooled TIP4P/2005 water. J Chem Phys 2016; 144:074503. [DOI: 10.1063/1.4941946] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
47
|
Maradonna F, Nozzi V, Santangeli S, Traversi I, Gallo P, Fattore E, Mita DG, Mandich A, Carnevali O. Xenobiotic-contaminated diets affect hepatic lipid metabolism: Implications for liver steatosis in Sparus aurata juveniles. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2015; 167:257-264. [PMID: 26382854 DOI: 10.1016/j.aquatox.2015.08.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 08/10/2015] [Accepted: 08/16/2015] [Indexed: 06/05/2023]
Abstract
The metabolic effects induced by feed contaminated with a lower or a higher concentration of -nonylpnenol (NP), 4-tert-octylphenol (t-OP) or bisphenol A (BPA), three environmental endocrine disruptors, were assessed in juvenile sea bream liver. Histological analysis demonstrated that all these three xenobiotics induced hepatic lipid accumulation and steatosis. These findings prompted analysis of the expression of the major molecules involved in lipid metabolism: peroxisome proliferator activated receptors (which is encoded by ppars), fatty acid synthase (encoded by fas), lipoprotein lipase (encoded by lpl) and hormone-sensitive lipase (encoded by hsl). The enzymes encoded by ppars and fas are in fact responsible for lipid accumulation, whereas lpl- and hsl- encoded proteins play a pivotal role in fat mobilization. The three xenobiotics modulated ppar mRNA expression: pparα mRNA expression was induced by the higher dose of each contaminant; pparβ mRNA expression was upregulated by the lower doses and in BPA2 fish ppary mRNA overexpression was induced by all pollutants. These data agreed with the lipid accumulation profiles documented by histology. Fas mRNA levels were modulated by the two NP doses and the higher BPA concentration. Lpl mRNA was significantly upregulated in all experimental groups except for BPA1 fish while hsl mRNA was significantly downregulated in all groups except for t-OP2 and BPA1 fish. The plasma concentrations of cortisol, the primary stress biomarker, were correlated with the levels of pepck mRNA level. This gene encodes phosphoenolpyruvate carboxykinase which is one of the key enzymes of gluconeogenesis. Pepck mRNA was significantly overexpressed in fish exposed to NP2 and both t-OP doses. Finally, the genes encoding cyclooxygenase 2 (cox2) and 5-lipoxygenase (5 lox), the products of which are involved in the inflammatory response, transcriptions were significantly upregulated in NP and BPA fish, whereas they were unchanged in t-OP specimens. The present findings suggest that dietary xenobiotic contamination can give rise to metabolic disorders also in fish and highlight the potential for their vertical transfer through the trophic levels and ultimately to humans.
Collapse
|
48
|
Corradini D, Rovere M, Gallo P. The Widom line and dynamical crossover in supercritical water: Popular water models versus experiments. J Chem Phys 2015; 143:114502. [DOI: 10.1063/1.4930542] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
49
|
Mottolese C, Szathmari A, Ricci-Franchi A, Gallo P, Beuriat P, Capone G. Supracerebellar infratentorial approach for pineal region tumors: Our surgical and technical considerations. Neurochirurgie 2015; 61:176-83. [DOI: 10.1016/j.neuchi.2014.02.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 11/11/2013] [Accepted: 02/19/2014] [Indexed: 11/26/2022]
|
50
|
Gallo P, Rovere M. Relation between the two-body entropy and the relaxation time in supercooled water. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:012107. [PMID: 25679570 DOI: 10.1103/physreve.91.012107] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Indexed: 06/04/2023]
Abstract
The two-body excess entropy of supercooled water is calculated from the radial distribution functions obtained from computer simulation of the TIP4P model for different densities upon supercooling. This quantity is considered in connection with the relaxation time of the self intermediate scattering function. The relaxation time shows a mode coupling theory (MCT) behavior in the region of mild supercooling and a strong behavior in the deep supercooled region. We find here that the two-body entropy is connected to the relaxation time and shows a logarithmic behavior with an apparent asymptotic divergence at the mode coupling crossover temperature. There is also evidence of a change in behavior of the two-body entropy upon crossing from the fragile (hopping-free) state to the strong (hopping-dominated) state of supercooled water, and the relation that connects the two-body entropy and the relxation time in the MCT region no longer holds.
Collapse
|