1
|
Del Vecchio A, Palaia G, Grassotti B, Tenore G, Ciolfi C, Podda G, Impellizzeri A, Mohsen A, Galluccio G, Romeo U. Effects of laser photobiomodulation in the management of oral lichen planus: a literature review. Clin Ter 2021; 172:467-483. [PMID: 34625781 DOI: 10.7417/ct.2021.2360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Objectives This review aims to understand whether Photobio-modulation (PBM) therapy is a valid aid in the management of Oral Lichen Planus (OLP) and its symptoms. Moreover, an analysis to determine whether it is a valid replacement for conventional therapies and whether standardized protocols can be used in PBM sessions or whether these should be changed depending on the type of injury has been made. Finally, an evaluation to determine whether PBM may induce transformation of dysplastic oral keratinocytes into squamous cell carcinoma has been made. Materials and Methods Searches were conducted on two search databases for relevant publications released between 1992 and 2019. The databases used were: Pubmed "Medline", and Google Scholar. Forty-four articles complied with the inclusion criteria and were included for quality assessment and data extraction. Results All the studies reported positive effects of PBM; how-ever, there was wide heterogeneity in the laser parameters used in the management of the OLP. The effective dose ranges from 2 to 3 J/cm2, in order to see the desired biological effects. Conclusions PBM is useful in controlling algal sensation and can be used in cases of OLP lesions that are not responsive to conventional therapies or when corticosteroid doses are too high for the patient, resulting in possible side effects. Standardized biostimulation protocols with further scientific insights are therefore required.
Collapse
Affiliation(s)
- A Del Vecchio
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - G Palaia
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - B Grassotti
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - G Tenore
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - C Ciolfi
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - G Podda
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - A Impellizzeri
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - A Mohsen
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - G Galluccio
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| | - U Romeo
- Department of Oral Sciences and Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
2
|
Cadinu D, Grayson B, Podda G, Harte MK, Doostdar N, Neill JC. NMDA receptor antagonist rodent models for cognition in schizophrenia and identification of novel drug treatments, an update. Neuropharmacology 2018; 142:41-62. [DOI: 10.1016/j.neuropharm.2017.11.045] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/28/2017] [Accepted: 11/27/2017] [Indexed: 01/05/2023]
|
3
|
Podda G, Femia EA, Cattaneo M. Current and emerging approaches for evaluating platelet disorders. Int J Lab Hematol 2016; 38 Suppl 1:50-8. [DOI: 10.1111/ijlh.12539] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 05/03/2016] [Indexed: 01/19/2023]
Affiliation(s)
- G. Podda
- Unità di Medicina III; ASST Santi Paolo e Carlo; Dipartimento di Scienze della Salute; Università degli Studi di Milano; Milan Italy
| | - E. A. Femia
- Unità di Medicina III; ASST Santi Paolo e Carlo; Dipartimento di Scienze della Salute; Università degli Studi di Milano; Milan Italy
| | - M. Cattaneo
- Unità di Medicina III; ASST Santi Paolo e Carlo; Dipartimento di Scienze della Salute; Università degli Studi di Milano; Milan Italy
| |
Collapse
|
4
|
Grayson B, Barnes SA, Markou A, Piercy C, Podda G, Neill JC. Postnatal Phencyclidine (PCP) as a Neurodevelopmental Animal Model of Schizophrenia Pathophysiology and Symptomatology: A Review. Curr Top Behav Neurosci 2016; 29:403-428. [PMID: 26510740 DOI: 10.1007/7854_2015_403] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Cognitive dysfunction and negative symptoms of schizophrenia remain an unmet clinical need. Therefore, it is essential that new treatments and approaches are developed to recover the cognitive and social impairments that are seen in patients with schizophrenia. These may only be discovered through the use of carefully validated, aetiologically relevant and translational animal models. With recent renewed interest in the neurodevelopmental hypothesis of schizophrenia, postnatal administration of N-methyl-D-aspartate receptor (NMDAR) antagonists such as phencyclidine (PCP) has been proposed as a model that can mimic aspects of schizophrenia pathophysiology. The purpose of the current review is to examine the validity of this model and compare it with the adult subchronic PCP model. We review the ability of postnatal PCP administration to produce behaviours (specifically cognitive deficits) and neuropathology of relevance to schizophrenia and their subsequent reversal by pharmacological treatments. We review studies investigating effects of postnatal PCP on cognitive domains in schizophrenia in rats. Morris water maze and delayed spontaneous alternation tasks have been used for working memory, attentional set-shifting for executive function, social novelty discrimination for selective attention and prepulse inhibition of acoustic startle for sensorimotor gating. In addition, we review studies on locomotor activity and neuropathology. We also include two studies using dual hit models incorporating postnatal PCP and two studies on social behaviour deficits following postnatal PCP. Overall, the evidence we provide supports the use of postnatal PCP to model cognitive and neuropathological disturbances of relevance to schizophrenia. To date, there is a lack of evidence to support a significant advantage of postnatal PCP over the adult subchronic PCP model and full advantage has not been taken of its neurodevelopmental component. When thoroughly characterised, it is likely that it will provide a useful neurodevelopmental model to complement other models such as maternal immune activation, particularly when combined with other manipulations to produce dual or triple hit models. However, the developmental trajectory of behavioural and neuropathological changes induced by postnatal PCP and their relevance to schizophrenia must be carefully mapped out. Overall, we support further development of dual (or triple) hit models incorporating genetic, neurodevelopmental and appropriate environmental elements in the search for more aetiologically valid animal models of schizophrenia and neurodevelopmental disorders (NDDs).
Collapse
Affiliation(s)
- B Grayson
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester, M13 9PT, UK.
| | - S A Barnes
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, San Diego, CA, 92093-0603, USA
| | - A Markou
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, San Diego, CA, 92093-0603, USA
| | - C Piercy
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - G Podda
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - J C Neill
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| |
Collapse
|
5
|
Murgatroyd CA, Peña CJ, Podda G, Nestler EJ, Nephew BC. Early life social stress induced changes in depression and anxiety associated neural pathways which are correlated with impaired maternal care. Neuropeptides 2015; 52:103-11. [PMID: 26049556 PMCID: PMC4537387 DOI: 10.1016/j.npep.2015.05.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 05/06/2015] [Accepted: 05/18/2015] [Indexed: 11/26/2022]
Abstract
Exposures to various types of early life stress can be robust predictors of the development of psychiatric disorders, including depression and anxiety. The objective of the current study was to investigate the roles of the translationally relevant targets of central vasopressin, oxytocin, ghrelin, orexin, glucocorticoid, and the brain-derived neurotrophic factor (BDNF) pathway in an early chronic social stress (ECSS) based rodent model of postpartum depression and anxiety. The present study reports novel changes in gene expression and extracellular signal related kinase (ERK) protein levels in the brains of ECSS exposed rat dams that display previously reported depressed maternal care and increased maternal anxiety. Decreases in oxytocin, orexin, and ERK proteins, increases in ghrelin receptor, glucocorticoid and mineralocorticoid receptor mRNA levels, and bidirectional changes in vasopressin underscore related work on the adverse long-term effects of early life stress on neural activity and plasticity, maternal behavior, responses to stress, and depression and anxiety-related behavior. The differences in gene and protein expression and robust correlations between expression and maternal care and anxiety support increased focus on these targets in animal and clinical studies of the adverse effects of early life stress, especially those focusing on depression and anxiety in mothers and the transgenerational effects of these disorders on offspring.
Collapse
Affiliation(s)
- Christopher A Murgatroyd
- Manchester Metropolitan University School of Healthcare Science, All Saints Building, Manchester M15 6BH, UK
| | - Catherine J Peña
- Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, United States
| | - Giovanni Podda
- Manchester Metropolitan University School of Healthcare Science, All Saints Building, Manchester M15 6BH, UK
| | - Eric J Nestler
- Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, United States
| | - Benjamin C Nephew
- Tufts University Cummings School of Veterinary Medicine, 200 Westboro Road, North Grafton, MA 01536, United States.
| |
Collapse
|
6
|
Danjou F, Origa R, Anni F, Saba L, Cossa S, Podda G, Galanello R. Longitudinal analysis of heart and liver iron in thalassemia major patients according to chelation treatment. Blood Cells Mol Dis 2013; 51:142-5. [PMID: 23816436 DOI: 10.1016/j.bcmd.2013.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 05/07/2013] [Accepted: 05/29/2013] [Indexed: 01/29/2023]
Abstract
Iron chelators and nuclear magnetic resonance imaging (MRI) techniques for assessing iron loading in liver and heart have greatly improved survival of thalassemic patients suffering iron overload-associated cardiomyopathy. However, the correlation between liver iron concentration and myocardial siderosis is ambiguous. Using an objective metric of time delay, scientists have demonstrated a lag in the loading and unloading of cardiac iron with respect to that of the liver. In the present study, we further tested this hypothesis with different chelation treatments. We analyzed the effect of three chelating treatment approaches on liver and cardiac iron content in 24 highly compliant patients who underwent 3 or more MRIs under each chelation treatment. Of the 84 MRIs considered, 32 were performed on deferoxamine (DFO - 8 patients), 24 on deferiprone (DFP - 7 patients), and 28 on combined therapy (DFO+DFP - 9 patients). In patients treated with DFO, changes in cardiac iron significantly lagged changes in liver iron but the opposite pattern was observed in patients treated with DFP (p=0.005), while combined therapy showed a pattern in-between DFO and DFP. We conclude that the temporality of changes of cardiac and liver iron is chelator-dependent, so that chelation therapy can be tailored to balance iron elimination from the liver and the heart.
Collapse
Affiliation(s)
- F Danjou
- Dipartimento di Sanità Pubblica, Medicina Clinica e Molecolare, Sezione di Scienze Biomediche e Biotecnologie, Università di Cagliari, Ospedale Regionale per le Microcitemie ASL8, Cagliari, Italy.
| | | | | | | | | | | | | |
Collapse
|
7
|
David O, Grillo A, Ceoloni B, Cavallo F, Podda G, Biancotti PP, Bergamo D, Canavese C. Analysis of red cell parameters on the Sysmex XE 2100 and ADVIA 120 in iron deficiency and in uraemic chronic disease. Scandinavian Journal of Clinical and Laboratory Investigation 2009; 66:113-20. [PMID: 16537244 DOI: 10.1080/00365510500406910] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The percentage measurement of hypochromic red cells (HYPO) and reticulocyte haemoglobin content (CHr) using the ADVIA system has recently been validated as a useful tool in indicating iron deficiency, also in cases of chronic diseases such as renal failure. The aim of this study was to evaluate the extent to which the red cell parameters, RBC-Y and RET-Y, provided by Sysmex XE 2100, correlate with HYPO and CHr. MATERIAL AND METHODS The laboratory markers of iron status were evaluated together with HYPO, CHr, RBC-Y and RET-Y in 92 healthy subjects (C), 42 iron-deficient patients (ID) and 88 uraemic patients receiving regular dialysis treatment (RDT). RESULTS In ID patients, increased HYPO and decreased RBC-Y, CHr and RET-Y values, with no overlapping with reference values, were found and a significant correlation was present between ADVIA 120 and Sysmex indices (p<0.001 for each correlation). In RDT patients, HYPO median values were increased with a wide distribution of values (95 % reference range = 0.7-27.5 % and 0.7-22.6 % in men and women, respectively). In contrast, RBC-Y was normal/increased (95 % reference range = 169.4-191.1 and 168.7-190.5 in men and women, respectively), even though there was a significant correlation between them (p<0.001). CHr and RET-Y values were within the reference range; moreover, in these patients mean cell volume of red cells and of reticulocytes (MCV and MCVr) median values were increased. CONCLUSIONS This study confirmed the validity of RBC-Y in the management of ID, but not in RDT, where the diagnostic power of RBC-Y as an index of cell hypochromia is limited owing to high MCV values.
Collapse
Affiliation(s)
- O David
- Department of Clinical Pathology, Regina Margherita-S. Anna Hospital, Turin, Italy.
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Podda G, Manconi B, Olianas A, Pellegrini M, Messana I, Mura M, Castagnola M, Giardina B, Sanna MT. Structural and Functional Characterization of Haemocyanin from the Anemone Hermit Crab Dardanus calidus. J Biochem 2007; 143:207-16. [DOI: 10.1093/jb/mvm210] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
9
|
Pusceddu C, Mameli S, Pili A, Podda G. [Percutaneous neurolysis of the celiac plexus under CT guidance in the invasive treatment of visceral pain caused by cancer]. Tumori 2003; 89:286-91. [PMID: 12903623] [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: 03/04/2023]
Abstract
To verify the effectiveness and the incidence of complication in the transcutaneal celiac plexus block with CT-guided in the patient with intractable upper abdominal cancer, using alcoholic solutions to different concentrations (50% and 96%), previous insertion of the peridural catheter. From December 1997 to June 2002, studies were carried out on 24 patients with CT-guided percutaneous coeliac plexus neurolysis including 17 men and 7 women with inoperable abdominal malignancy and two with chronic pancreatitis. The patients were affected by very intense pain controllable only with high doses of analgesic narcotics. Before the procedure a catheter was installed in the peridurale space between L1-T12. To avoid general anesthesia, 40 mL of marcaine 0.5% was injected to relieve the back pain sometimes reported after the neurolysis, caused by the diffusion of alcohol in the coeliac plexus. This technique requires a posterior percutaneous procedural transaortic approach CT scan guided, to determine the correct position of the needle tips and the spread of neurolytic solution (40 mL of 96% + 3 mL of contrast medium) around the origin of the coeliac trunk's anatomical center of the plexus. The first 10 patients have received 40 mL of 50% ethyl alcohol + 3 mL of contrast medium. To evaluate the rate of the analgesia relief, a visual analogue pain score (VAS) was used before and 48 hours after the neurolysis. The percutaneous neurolysis of the celiac plexus is useful to relieve the pain in patients affected by cancer developing in upper abdomen. The CT-scan guide of the needle allows an omogeneous distribution of the contrast medium. The insertion of the peridural catheter made a complete analgesia and reduced the incidence of complications. Our method provided an excellent control of the pain in all patients. In our experience the pain relief was almost complete in patients treated with 96% ethyl alcohol solution (VAS from 8 before the treatment to 1, 48 hours after the treatment). The alcohol administered in elevated concentrations (96%), does not increase the incidence of complications.
Collapse
Affiliation(s)
- C Pusceddu
- Servizio di Radiodiagnostica, Ospedale Oncologico A Businco, ASL 8, UO Terapia Antalgica
| | | | | | | |
Collapse
|
10
|
Moroni G, Greloni G, Podda G. Acute renal failure in a single kidney with previous obstruction. Nephrol Dial Transplant 2001; 16:1713-5. [PMID: 11477183 DOI: 10.1093/ndt/16.8.1713] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- G Moroni
- Divisione di Nefrologia e Dialisi, IRCCS Ospedale Maggiore, Milano, Italy
| | | | | |
Collapse
|
11
|
Begala M, Delogu G, Maccioni E, Podda G, Tocco G, Quezada E, Uriarte E, Fedrigo MA, Favretto D, Traldi P. Electrospray ionisation tandem mass spectrometry in the characterisation of isomeric benzofurocoumarins. Rapid Commun Mass Spectrom 2001; 15:1000-1010. [PMID: 11400210 DOI: 10.1002/rcm.331] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A set of aminoalkoxy-substituted, differently annullated furocoumarins, differing in the position of the aminoalkoxy chain and in the unsaturation level of the fused ring, has been subjected to electron impact and electrospray ionisation (ESI) experiments. In order to achieve a distinct characterisation of isomeric compounds, which partially failed under electron impact conditions, collision-induced dissociation experiments were performed on protonated molecules. The breakdown curves obtained by varying the tickle voltage on an ion trap ESI instrument led to the desired characterisation.
Collapse
Affiliation(s)
- M Begala
- Dipartimento Farmaco Chimico Tecnologico, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
González JC, Dedola T, Santana L, Uriarte E, Begala M, Copez D, Podda G. Inverse electron demand diels-alder reactions of psoralens. Synthesis and mass spectra of novel pyridazinocoumarins. J Heterocycl Chem 2000. [DOI: 10.1002/jhet.5570370438] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
13
|
Abstract
Hexakis[butoxytris(ethoxy)]cyclophosphazene (3a), hexakis[dodecyloxytetrakis (ethoxy)]cyclophosphazene (3b) and hexakis[hexadecyloxyeicosanekis(ethoxy)]cyclophosphazene+ ++ (3c) were synthesised and their ability to form niosomes was studied. All synthesised compounds in the presence of cholesterol were shown to form vesicles, which aggregated strongly. To prevent aggregation, dicetylphosphate was used. The capacity of the sonicated and unsonicated niosomes to encapsulate hydrophile and lipophile molecules was also studied using carboxyfluorescein and diphenylhexatriene.
Collapse
Affiliation(s)
- B Baroli
- Dipartimento Farmaco Chimico Tecnologico, Facoltà di Farmacia, Università di Cagliari, Via Ospedale 72, 09124, Cagliari, Italy
| | | | | | | | | |
Collapse
|
14
|
Piattelli A, Scarano A, Piattelli M, Podda G. Implant periapical lesions: clinical, histologic, and histochemical aspects. A case report. INT J PERIODONT REST 1998; 18:181-7. [PMID: 9663096] [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: 02/08/2023]
Abstract
A new entity, the "implant periapical lesion," has recently been described. The etiology of this condition could be attributed to overheating of the bone, overloading of the implant, presence of a pre-existing infection or of residual root particles and foreign bodies in the bone, implant contamination during production or during insertion, or placement of the implant in an infected maxillary sinus. In this report, a titanium plasma-sprayed implant had been inserted into the mandible of a 53-year-old patient; after 5 months a fistula developed and periapical radiography showed a large radiolucent image around the apical portion of the implant. The implant was removed, and histologic examination showed necrotic bone and an inflammatory infiltrate inside the hollow portion of the implant. The etiology of the implant failure in this instance could be related to a fracture and vascular impairment of the bone inside the implant during insertion, to external contamination of the implant, or to the poor bone quality of the implant site.
Collapse
|
15
|
Fanton C, Delogu G, Maccioni E, Podda G, Seraglia R, Traldi P. Matrix-assisted laser desorption/ionization mass spectrometry in the dairy industry. 2. The protein fingerprint of ewe cheese and its application to detection of adulteration by bovine milk. Rapid Commun Mass Spectrom 1998; 12:1569-1573. [PMID: 9796539 DOI: 10.1002/(sici)1097-0231(19981030)12:20<1569::aid-rcm341>3.0.co;2-f] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Ewe milk and ewe cheese samples were analysed by matrix-assisted laser desorption/ionization mass spectrometry and their protein profiles were compared with those obtained from bovine milk and bovine cheeses. Various mixtures of bovine and ewe cheeses in different weight ratios were analysed, leading to a reproducible calibration curve, which has been successfully employed in determining the percentage of bovine milk fraudulently added to ewe milk in the production of marketed ewe cheese.
Collapse
|
16
|
Abstract
A very important parameter during the insertion of dental implants is the amount of bone present in a site. A regenerative procedure to increase the width and the height of bone is proposed with the use of occlusive barrier membranes and biomaterials. The authors used, in six patients with deficient alveolar ridges, prior to implant insertion, Biocoral gel particles in connection with expanded polytetrafluoroethylene membranes. After 6 months it was observed that a tissue similar to mature bone had regenerated under the membrane and microscopically it was observed that the Biocoral particles were still present and almost all were completely surrounded by mature bone.
Collapse
|
17
|
Fadda AM, Podda G, Teijeira M, Uriarte E, Favretto D, D'Alpaos M, Traldi P. Synthesis and mass spectrometric behavior of some new nucleosides as potential anti-HIV agents. Rapid Commun Mass Spectrom 1997; 11:774-780. [PMID: 9161046 DOI: 10.1002/(sici)1097-0231(19970422)11:7<774::aid-rcm906>3.0.co;2-j] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The electron-impact (EI) mass spectrometric behaviour of a series of 8-aza-purines derivatized with hydroxymethylcyclopentane and exhibiting cis-trans isomerization in the cyclopentane ring has been studied in detail with the aid of metastable-ion data. Specific fragmentation processes, present in both EI and mass analysed ion kinetic energy spectra of molecular species, allow characterization of the different pairs of stereoisomers. Contrary to what is observed in the case of purine analogs, the presence of a nitrogen atom in position 8 strongly inhibits fragmentation processes related to the heterocycle.
Collapse
Affiliation(s)
- A M Fadda
- Dipartimento Farmaco Chimico Tecnologico, Cagliari, Italy
| | | | | | | | | | | | | |
Collapse
|
18
|
Abstract
Alumina implants have been shown to possess high biocompatibility. The authors present the case of an aluminium oxide ceramic implant removed because of fracture of the abutment after a 30-month loading period. It was possible to observe microscopically that the implant was covered by highly mineralized mature compact lamellar bone; no connective tissue or inflammatory cells were present at the interface. Osteocytes were observed very close to the bone-implant interface. These features indicate the good biocompatibility of the implant.
Collapse
|
19
|
Santana L, Teijeira M, Uriarte E, Fadda A, Podda G, Catinella S, Traldi P. Electron impact mass spectrometry of some potential anti-HIV nucleosides. Rapid Commun Mass Spectrom 1996; 10:1316-1319. [PMID: 8759336 DOI: 10.1002/(sici)1097-0231(19960731)10:10<1316::aid-rcm617>3.0.co;2-h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
20
|
Fadda AM, Maccioni AM, Maccioni E, Podda G. Macrocyclic polyesters. I. A novel class of 1,3-butandiol derivatives as potential antimicrobial agents. Farmaco 1992; 47:99-110. [PMID: 1616581] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This paper reports the synthesis of a novel class of macrocyclic tetraesters containing 1,3-butandiol sub-units by reacting the stannolan derivative of the diol with diacyl chloride. The structure of the possible isomers was assigned by spectroscopic data and comparison with samples otherwise prepared. Preliminary screening revealed that these compounds have low antimicrobial activity, although it is higher than that of the starting diol.
Collapse
Affiliation(s)
- A M Fadda
- Dipartimento Farmaco Chimico Technologico, Università di Cagliari, Italy
| | | | | | | |
Collapse
|
21
|
Landini D, Maia A, Corda L, Maccioni A, Podda G. Cyclophosphazenic polypodands: A new class of powerful metal cation complexing agents and phase-transfer catalysts. Tetrahedron Lett 1989. [DOI: 10.1016/s0040-4039(00)76196-x] [Citation(s) in RCA: 5] [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: 10/18/2022]
|
22
|
De Virgiliis S, Congia M, Frau F, Argiolu F, Diana G, Cucca F, Varsi A, Sanna G, Podda G, Fodde M. Deferoxamine-induced growth retardation in patients with thalassemia major. J Pediatr 1988; 113:661-9. [PMID: 3171791 DOI: 10.1016/s0022-3476(88)80375-5] [Citation(s) in RCA: 144] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In the retrospective study reported here, we compared the longitudinal growth in three groups of children with thalassemia major who received a similar transfusion program but different schedules of chelation treatment. In those patients who initiated deferoxamine (DF) administration by daily subcutaneous infusion (50 to 80 mg/kg/day) simultaneously with the beginning of transfusion (at 8 +/- 6 months), mean height at 2 to 6 years of age was significantly reduced in comparison (1) with those patients who initiated DF subcutaneous treatment after 3 years at similar doses and (2) with those who were treated intramuscularly with small doses. In the patients treated at an early stage, those with more marked stunted growth had a clinical and radiologic ricketslike syndrome associated with joint stiffness. Mineral metabolism studies in these patients showed a reduction of hair and leukocyte zinc levels and leukocyte alkaline phosphatase activity. Our findings indicate that DF administration at high doses by continuous infusion before iron overload has been established adversely affects longitudinal growth. By contrast, after 3 years of age, even large doses (in the order of 100/mg/kg/day) did not result in growth retardation. The growth retardation observed may be related to chelation of other trace elements, including zinc, in the presence of low iron burden, to the direct toxic effect of unchelated DF by interference with critical iron-dependent enzymes, or both. These results indicate that in patients with thalassemia major, DF administration should be initiated only after iron accumulation is established, namely, around 3 years of age, after 20 to 30 transfusions, which are usually associated with ferritin levels in the range of 800 to 1000 ng/ml. At this age, deferoxamine doses should be established on the basis of iron balance studies and dose response curves. Doses higher than 50 to 60 mg/kg do not adversely affect growth but produce toxic side effects on acoustic and visual pathways and therefore should not be used. Longitudinal growth monitoring of DF-treated patients is warranted.
Collapse
Affiliation(s)
- S De Virgiliis
- Istituto di Clinica e Biologia dell 'Etá Evolutiva, Universitá degli Studi, Sardinia, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Santa Cruz G, Casula G, Uccheddu A, Podda G. [Benign lymphomatosis of the stomach]. Pathologica 1979; 71:95-105. [PMID: 450481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
|
24
|
Cocco MT, Marongiu E, Podda G, Scrollini F. [Preparation and pharmacological activity of some amides of mono- and di-alkylmalonic acids]. Farmaco Sci 1973; 28:590-3. [PMID: 4718406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|