7 results on '"Saccomanno S"'
Search Results
2. Castration inhibits biliary proliferation induced by bile duct obstruction: novel role for the autocrine trophic effect of testosterone
- Author
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Yang, F. Q., Priester, S., Onori, Paolo, Venter, J., Renzi, Anastasia, Franchitto, Antonio, Munshi, M. K., Wise, C., Dostal, D. E., Marzioni, M., Saccomano, S., Saccomanno, S., Ueno, Y., Gaudio, Eugenio, and Glaser, S.
- Subjects
Male ,medicine.medical_specialty ,17 beta-hydroxysteroid dehydrogenase 3 ,17-Hydroxysteroid Dehydrogenases ,Physiology ,Intrahepatic bile ducts ,Cholestasis, Intrahepatic ,Biology ,secretin ,sex hormones ,Cholangiocyte ,Flutamide ,chemistry.chemical_compound ,Cholestasis ,Apoptosomes ,biliary epithelium ,17β-hydroxysteroid dehydrogenase 3 ,biliary secretion ,Physiology (medical) ,Internal medicine ,Cyclic AMP ,medicine ,Animals ,Bile ,Testosterone ,Hepatology ,Bile duct ,Gastroenterology ,Testosterone (patch) ,medicine.disease ,Rats, Inbred F344 ,Rats ,Androgen receptor ,Liver and Biliary Tract ,Autocrine Communication ,Bile Ducts, Intrahepatic ,Endocrinology ,medicine.anatomical_structure ,Castration ,chemistry ,Receptors, Androgen ,Androgens ,Female ,Orchiectomy ,Cell Division - Abstract
Increased cholangiocyte growth is critical for the maintenance of biliary mass during liver injury by bile duct ligation (BDL). Circulating levels of testosterone decline following castration and during cholestasis. Cholangiocytes secrete sex hormones sustaining cholangiocyte growth by autocrine mechanisms. We tested the hypothesis that testosterone is an autocrine trophic factor stimulating biliary growth. The expression of androgen receptor (AR) was determined in liver sections, male cholangiocytes, and cholangiocyte cultures [normal rat intrahepatic cholangiocyte cultures (NRICC)]. Normal or BDL (immediately after surgery) rats were treated with testosterone or antitestosterone antibody or underwent surgical castration (followed by administration of testosterone) for 1 wk. We evaluated testosterone serum levels; intrahepatic bile duct mass (IBDM) in liver sections of female and male rats following the administration of testosterone; and secretin-stimulated cAMP levels and bile secretion. We evaluated the expression of 17β-hydroxysteroid dehydrogenase 3 (17β-HSD3, the enzyme regulating testosterone synthesis) in cholangiocytes. We evaluated the effect of testosterone on the proliferation of NRICC in the absence/presence of flutamide (AR antagonist) and antitestosterone antibody and the expression of 17β-HSD3. Proliferation of NRICC was evaluated following stable knock down of 17β-HSD3. We found that cholangiocytes and NRICC expressed AR. Testosterone serum levels decreased in castrated rats (prevented by the administration of testosterone) and rats receiving antitestosterone antibody. Castration decreased IBDM and secretin-stimulated cAMP levels and ductal secretion of BDL rats. Testosterone increased 17β-HSD3 expression and proliferation in NRICC that was blocked by flutamide and antitestosterone antibody. Knock down of 17β-HSD3 blocks the proliferation of NRICC. Drug targeting of 17β-HSD3 may be important for managing cholangiopathies.
- Published
- 2011
- Full Text
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3. Case report of patients treated with an orthodontic and myofunctional protocol
- Author
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Saccomanno, S., Antonini, G., Lucia D'ALATRI, D Angeloantonio, M., Fiorita, A., and Deli, R.
- Subjects
Settore MED/28 - MALATTIE ODONTOSTOMATOLOGICHE ,Male ,Adolescent ,Orthodontic Appliances ,Humans ,Female ,Settore MED/31 - OTORINOLARINGOIATRIA ,Speech Therapy ,Child ,Malocclusion ,Myofunctional Therapy - Abstract
Occlusion alterations can be associated to bad habits (such as thumb sucking, oral breathing, atypical swallowing and labial interposition) which can lead to functional anomalies.Three cases are reported with the good results of myofunctional and orthodontic therapy.When there are bad habits, orthodontics should be combined with a myofunctional therapy.
- Published
- 2014
4. Causal relationship between malocclusion and oral muscles dysfunction: a model of approach
- Author
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Saccomanno, S., Antonini, G., Lucia D'ALATRI, D Angelantonio, M., Fiorita, A., and Deli, R.
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Male ,Chin ,Palatal Expansion Technique ,Adolescent ,Cephalometry ,Muscle Strength Dynamometer ,Speech Therapy ,Patient Care Planning ,Adenoidectomy ,Humans ,Child ,Myofunctional Therapy ,Tonsillectomy ,Lingual Frenum ,Electromyography ,muscles dysfunction ,Open Bite ,Tongue Habits ,Mouth Breathing ,Lip ,Overbite ,Child, Preschool ,Muscle Tonus ,Settore MED/32 - AUDIOLOGIA ,Female ,Fingersucking ,Deglutition Disorders ,Malocclusion ,Muscle Contraction - Abstract
Bad habits result in altered functions which with time can cause anomalies of the orofacial morphology. To solve these problems, orthodontic treatment can be supported by myofunctional therapy in order to recover the normal functionality of the oral muscles. The aim of this study is to assess the need to treat patients with neuromuscular disorders, from both the occlusion and the muscles condition approach in order to obtain the balance needed for the stability of treatment.A sample of 23 patients with atypical swallowing was included in this study, some of them presented thumb sucking and oral breathing. After case history collection, in order to make a correct orthodontic and functional diagnosis, correction of anomalies was carried out since they could compromise the success of the therapy (maxillary contraction, oral breathing, and short lingual fraenum). Then a different therapeutic approach was applied on the basis of the specific dental features.Both from the diagnostic and therapeutic point of view, important results were achieved especially through muscle analysis with dynamometer and surface electromyography.Orthodontic therapy, in the presence of bad habits, is not enough to solve orthodontic issues, it must be combined with a myofunctional treatment. The success of the therapy is granted only when patients and their family comply with the treatment and all factors which can prevent success of the therapy are removed.
- Published
- 2012
5. Patients treated with orthodontic-myofunctional therapeutic protocol
- Author
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Saccomanno, S., Antonini, G., Lucia D'ALATRI, D Angelantonio, M., Fiorita, A., and Deli, R.
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Male ,Palatal Expansion Technique ,Adolescent ,Cephalometry ,Open Bite ,Facial Muscles ,Tongue Habits ,Orthodontics ,Mouth Breathing ,Malocclusion, Angle Class II ,Orthodontics, Corrective ,Angle Class II ,Settore MED/32 - AUDIOLOGIA ,Humans ,Corrective ,Female ,Fingersucking ,Child ,Deglutition Disorders ,Malocclusion ,Myofunctional Therapy - Abstract
The aim of this study is to report three cases that needed myofunctional and orthodontic treatment and the good results achieved after the therapy. Orthodontic treatment alone, in presence of bad habits, is not enough to solve the orthodontic issues, so it needs to be combined with myofunctional treatment.
- Published
- 2012
6. 'Splitting' and Stretching Dilation of Esophageal Strictures
- Author
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Hugo Aste, Pugliese, Munizzi F, and Saccomanno S
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Adult ,Male ,medicine.medical_specialty ,business.industry ,Peptic ,Esophagoscopes ,Gastroenterology ,Middle Aged ,Dilatation ,Dysphagia ,Surgery ,Esophageal Stenosis ,Humans ,Medicine ,Dilation (morphology) ,Female ,Esophagoscopy ,medicine.symptom ,Deglutition Disorders ,business ,Aged - Abstract
The "Splitting" action of metal olives, and the stretching effect of tapering Neoplex tubes of increasing diameter on dysphagia in a group of 55 consecutive patients with esophageal strictures are compared. Dilators were passed over a fibreoptic endoscopically positioned guide wire. Greater relief of dysphagic symptoms was obtained with the stretching procedure, mainly in postanastomotic and peptic strictures. Both procedures were safe, but the stretching technique was easier and resulted in wider dilations in most patients. Consecutive dilations using stretching procedures in malignant strictures appear to be an appropriate easy and safe alternative to endoprosthesis insertion.
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- 1983
- Full Text
- View/download PDF
7. Insulin resistance and necroinflammation drives ductular reaction and epithelial-mesenchymal transition in chronic hepatitis C
- Author
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Massimiliano Cadamuro, Elisabetta Bugianesi, I. Pierantonelli, Luca Fabris, Giulio Marchesini, Maria Guido, Mario Strazzabosco, Antonio Benedetti, Gianluca Svegliati-Baroni, Graziella Faraci, Stefania Saccomanno, Luciano Trozzi, Svegliati Baroni, G, Faraci, G, Fabris, L, Saccomanno, S, Cadamuro, M, Pierantonelli, I, Trozzi, L, Bugianesi, E, Guido, M, Strazzabosco, M, Benedetti, A, Marchesini, G, G. Svegliati Baroni, G. Faraci, L. Fabri, S. Saccomanno, M. Cadamuro, I. Pierantonelli, L. Trozzi, E. Bugianesi, M. Guido, M. Strazzabosco, A. Benedetti, and G. Marchesini Reggiani
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Adult ,Liver Cirrhosis ,Male ,Pathology ,medicine.medical_specialty ,Cirrhosis ,Epithelial-Mesenchymal Transition ,Fibrosi ,Chronic liver injury ,Vimentin ,Insuline resistance, EMT, HCV, FSP-1 ,Chronic hepatitis C ,Necrosis ,Insulin resistance ,Downregulation and upregulation ,Fibrosis ,MED/12 - GASTROENTEROLOGIA ,medicine ,Humans ,Epithelial–mesenchymal transition ,Hepatic stellate cell ,biology ,Anthropometry ,business.industry ,Gastroenterology ,Glucose Tolerance Test ,Hepatitis C, Chronic ,Middle Aged ,medicine.disease ,Liver ,biology.protein ,Disease Progression ,Female ,Insulin Resistance ,Hepatic fibrosis ,business - Abstract
OBJECTIVE: To study the mechanism(s) linking insulin resistance (IR) to hepatic fibrosis and the role of the epithelial component in tissue repair and fibrosis in chronic hepatitis C (CHC). DESIGN: Prospective observational study. SETTING: Tertiary care academic centre. PATIENTS: 78 consecutive patients with CHC. MAIN OUTCOME MEASURES: IR, calculated by the oral glucose insulin sensitivity during oral glucose tolerance test; necroinflammatory activity and fibrosis, defined according to Ishak's score; steatosis, graded as 0 (66%). To evaluate the role of the epithelial component in tissue repair and fibrosis, the expansion of the ductular reaction (DR) was calculated by keratin-7 (CK7) morphometry. Nuclear expression of Snail, downregulation of E-cadherin and expression of fibroblast specific protein-1 (FSP1) and vimentin by CK7-positive cells were used as markers of epithelial-mesenchymal transition in DR elements. RESULTS: IR, the degree of necroinflammation and expansion of the DR (stratified as reactive ductular cells (RDCs), hepatic progenitor cells and intermediate hepatobiliary cells according to morphological criteria) were all associated with the stage of fibrosis. Nuclear Snail expression, E-cadherin downregulation and vimentin upregulation were observed in RDCs. By dual immunofluorescence for CK7 and FSP1, the number of RDCs undergoing epithelial-mesenchymal transition progressively increased together with the necroinflammatory score. By multivariate analysis, total inflammation and insulin resistance were the only factors significantly predicting the presence of advanced fibrosis (Ishak score ≥3) and the expansion of RDCs. CONCLUSION: This study indicates that IR is associated with the degree of necroinflammatory injury in CHC and contributes to hepatic fibrosis by stimulating the expansion of RDCs that express epithelial-mesenchymal transition markers.
- Published
- 2011
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