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1.
J Dig Dis ; 19(1): 40-47, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29266839

RESUMO

OBJECTIVE: To evaluate the impact of a new same-day, low-dose 1-L polyethylene glycol-based (1-L PEG) bowel preparation on the diagnostic rating of selected hospitalized patients and its tolerability, with risk factors for inadequate bowel preparation. METHODS: A single-center prospective pilot study was conducted with hospitalized patients scheduled for colonoscopy, presenting risk factors for poor bowel preparation, such as bleeding or subocclusive symptoms. The included patients were randomly divided in two groups, which received either a same-day 1-L PEG (group A) or a split-dose 4-L PEG (group B), and performed a colonoscopy within 4 h of the last dose. RESULTS: In all, 44 inpatients [27 males; mean age 63.5 years (range 20-94 years)] were enrolled. Optimal bowel cleansing was reached in 64% and 55% (P = 0.64) of patients in groups A and B, respectively. The adenoma detection rate was 14% (group A) and 18% (group B) (P = 0.34). A valid diagnosis was reached in 38 (86%) of 44 patients (21 in group A and 17 in group B) after a mean hospitalization of 3 days for group A and 6 days for group B (P = 0.04). CONCLUSIONS: Our data support the conclusion that the schedule protocol proposed in this study enables a clear diagnosis in most of the inpatients at high risk of poor bowel preparation and no statistical differences were found between the two groups in terms of successful bowel cleansing achieved. Therefore, the same-day, low-dose 1-L PEG bowel preparation could be introduced for selected inpatients.


Assuntos
Catárticos/administração & dosagem , Doenças do Colo/diagnóstico , Colonoscopia/métodos , Obstrução Intestinal/diagnóstico , Polietilenoglicóis/administração & dosagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Catárticos/efeitos adversos , Neoplasias do Colo/complicações , Neoplasias do Colo/diagnóstico , Esquema de Medicação , Feminino , Hospitalização , Humanos , Obstrução Intestinal/etiologia , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Polietilenoglicóis/efeitos adversos , Estudos Prospectivos , Fatores de Risco , Adulto Jovem
2.
Int J Surg ; 41 Suppl 1: S7-S12, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28506417

RESUMO

Thyroid nodules are very common, affecting 19%-67% of the adult population. However, about 10% of them harbor a malignant lesion. Consequently, the first aim in their clinical evaluation is to exclude malignancy. Fine-needle aspiration cytology (FNAC) represents the main diagnostic tool for the evaluation of thyroid nodules. However, FNAC has a main diagnostic limit, namely cellular atypias of indeterminate significance, which require surgical excision and histological examination to differentiate benign from malignant lesions. Histology reports show that approximately 80% of these patients harbor a benign lesion. Therefore, in order to reduce unnecessary thyroidectomy, over the last years, the cytological classification of thyroid nodules has been revised and a number of new instrumental and molecular approaches have been proposed. In the present article, we will attempt to summarize the most recent cytological, molecular and echographic strategies to enhance the diagnostic accuracy of preoperative thyroid follicular lesions. In particular, we will discuss the new cytological classifications from the Bethesda System for Reporting Thyroid Cytopathology (BSRTC), the British Thyroid Association-Royal College of Pathologists (PTA-RCPath) and the new Italian Society for Anatomic Pathology and Cytology (SIAPEC 2014. We will review molecular tests evaluated to ameliorate follicular lesion diagnosis as well as the clinical utility of the new echographic Thyroid Imaging Reporting and Data System (TI-RADS) score.


Assuntos
Citodiagnóstico/métodos , Técnicas Histológicas/métodos , Neoplasias da Glândula Tireoide/diagnóstico , Nódulo da Glândula Tireoide/diagnóstico , Adulto , Biópsia por Agulha Fina/métodos , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias da Glândula Tireoide/patologia , Neoplasias da Glândula Tireoide/cirurgia , Nódulo da Glândula Tireoide/patologia , Nódulo da Glândula Tireoide/cirurgia , Tireoidectomia , Procedimentos Desnecessários
3.
Int J Endocrinol ; 2017: 9692304, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28348589

RESUMO

The new Italian cytological classification (2014) of thyroid nodules replaced the TIR3 category of the old classification (2007) with two subclasses, TIR3A and TIR3B, with the aim of reducing the rate of surgery for benign diseases. Moreover, thyroid imaging reporting and data system (TI-RADS) score appears to ameliorate the stratification of the malignancy risk. We evaluated whether the new Italian classification has improved diagnostic accuracy and whether its association with TI-RADS score could improve malignancy prediction. We retrospectively analyzed 70 nodules from 70 patients classified as TIR3 according to the old Italian classification who underwent surgery for histological diagnosis. Of these, 51 were available for cytological revision according to the new Italian cytological classification. Risk of malignancy was determined for TIR3A and TIR3B, TI-RADS score, and their combination. A different rate of malignancy (p = 0.0286) between TIR3A (13.04%) and TIR3B (44.44%) was observed. Also TI-RADS score is significantly (p = 0.003) associated with malignancy. By combining cytology and TI-RADS score, patients could be divided into three groups with low (8.3%), intermediate (21.4%), and high (80%) risk of malignancy. In conclusion, the new Italian cytological classification has an improved diagnostic accuracy. Interestingly, the combination of cytology and TI-RADS score offers a better stratification of the malignancy risk.

4.
Int J Oncol ; 50(4): 1413-1422, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28350047

RESUMO

Establishment and maintenance of the apical-basal cell polarity, required for proper replication, migration, specialized functions and tissue morphogenesis, relies on three evolutionary conserved complexes: PAR, CRUMBS and SCRIBBLE. Loss of cell polarity/cohesiveness (LOP/C) is implicated in cancer progression, and members of the polarity complex have been described as either oncogenes or oncosuppressors. However, no information on their role in thyroid cancer (TC) progression is available. In the present study, we evaluated the gene expression of the PAR complex members aPKCι, PARD3α/ß and PARD6α/ß/γ in 95 papillary TC (PTC), compared to their normal matched tissues and in 12 anaplastic TC (ATC). The mRNA and protein levels of investigated genes were altered in the majority of PTC and ATC tissues. In PTC, univariate analysis showed that reduced expression of aPKCι, PARD3ß and PARD6γ mRNAs is associated with increased tumor size, and the reduced expression of PARD3ß mRNA is associated also with recurrences. Multivariate analysis demonstrated that the presence of lymph node metastasis at diagnosis and the reduced expression of PARD3ß are independent risk factors for recurrences, with hazard ratio, respectively, of 8.21 (p=0.006) and 3.04 (p=0.029). The latter result was confirmed by the Kaplan-Meier analysis, which evidenced the association between decreased PARD3ß mRNA levels and shorter disease-free interval. In conclusion, we demonstrated that the expression of PAR complex components is deregulated in the majority of PTC and there is a general trend towards their reduction in ATC tissues. Moreover, a prognostic value for the PARD3ß gene in PTCs is suggested.

5.
Mol Cell Endocrinol ; 443: 121-127, 2017 03 05.
Artigo em Inglês | MEDLINE | ID: mdl-28089820

RESUMO

Recent findings demonstrated that a subset of papillary thyroid cancers (PTCs) is characterized by reduced expression of the von Hippel-Lindau (VHL) tumor suppressor gene, and that lowest levels associated with more aggressive PTCs. In the present study, the levels of the two VHL mRNA splicing variants, VHL-213 (V1) and VHL-172 (V2), were measured in a series of 96 PTC and corresponding normal matched tissues by means of quantitative RT-PCR. Variations in the mRNA levels were correlated with patients' clinicopathological parameters and disease-free interval (DFI). The analysis of VHL mRNA in tumor tissues, compared to normal matched tissues, revealed that its expression was either up- or down-regulated in the majority of PTC. In particular, V1 and V2 mRNA levels were altered, respectively, in 78 (81.3%) and 65 (67.7%) out of the 96 PTCs analyzed. A significant positive correlation between the two mRNA variants was observed (p < 0.001). Univariate analysis documented the lack of association between each variant and clinicopathological parameters such as age, tumor size, histology, TNM stage, lymph node metastases, and BRAF mutational status. However, a strong correlation was found between altered V1 or V2 mRNA levels and DFI. Multivariate regression analysis indicated higher V1 mRNA values, along with lymph node metastases at diagnosis, as independent prognostic factors predicting DFI. In conclusion, the data reported demonstrate that VHL gene expression is deregulated in the majority of PTC tissues. Of particular interest is the apparent protective role exerted by VHL transcripts against PTC recurrences.


Assuntos
Processamento Alternativo/genética , Carcinoma Papilar/genética , Regulação Neoplásica da Expressão Gênica , Neoplasias da Glândula Tireoide/genética , Proteína Supressora de Tumor Von Hippel-Lindau/genética , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Papilar/patologia , Criança , Intervalo Livre de Doença , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Mutação/genética , Prognóstico , Proteínas Proto-Oncogênicas B-raf/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Câncer Papilífero da Tireoide , Neoplasias da Glândula Tireoide/patologia , Proteína Supressora de Tumor Von Hippel-Lindau/metabolismo , Adulto Jovem
6.
Aging Clin Exp Res ; 29(Suppl 1): 109-113, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27837459

RESUMO

BACKGROUND: Endoscopic mucosal resection (EMR) of early superficial colorectal carcinomas is nowadays accepted as the gold standard treatment for this type of neoplasia. AIM: This study aims to evaluate the efficacy and safety of mucosectomy in elderly patients considering the predictive value of submucosal infiltration. METHODS: A retrospective study of all patients referred for EMR of sessile colorectal polyps classified IIa by the Paris classification between April 2013 and April 2015. A total of 50 patients (30 males (60 %); age range = 44-86; mean age = 67.7) were enrolled. Patients were divided in two groups considering 65 years as cutoff to individuate the elderly patients. RESULTS: EMR was performed in 53 lesions: 39 were performed en bloc and 14 by piecemeal technique. 30 % of lesions were in the rectum; 11 % in the sigmoid colon; 15 % in the descending colon; 6 % in the transverse colon; 24 % in the ascendant colon; and 14 % in the cecum. The mean size of the resected specimens was 20 mm (range 8-80 mm). The rate of complete resection was 79.2 %, incomplete 13.2 %, not estimable 7 %. Ten patients underwent surgery because of an incomplete resection and/or histological evaluation. CONCLUSIONS: Colon EMR is safe and effective in elderly patients. Endoscopy is still helped in the correct indication for surgery in high-risk surgical patients.


Assuntos
Colonoscopia , Neoplasias Colorretais , Ressecção Endoscópica de Mucosa , Idoso , Idoso de 80 Anos ou mais , Colonoscopia/efeitos adversos , Colonoscopia/métodos , Neoplasias Colorretais/patologia , Neoplasias Colorretais/cirurgia , Ressecção Endoscópica de Mucosa/efeitos adversos , Ressecção Endoscópica de Mucosa/métodos , Feminino , Humanos , Mucosa Intestinal/patologia , Mucosa Intestinal/cirurgia , Itália , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento
7.
Aging Clin Exp Res ; 29(Suppl 1): 101-108, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27830517

RESUMO

BACKGROUND: Perianal fistula is a complex and frequent disease. At present, no treatment nor technique has shown an absolute superiority in terms of efficacy and recurrence rate. The technique has to be chosen considering the balance between faecal continence preservation and disease eradication. Rarely concomitant perianal abscess and fistula are treated at the same time, and often time to complete recovery is long. AIMS: The aim of this study was to evaluate the possibility of treating the abscess and the fistula tract in one procedure with total fistulectomy, sphincteroplasty and an almost complete closure of the residual cavity, thus reducing the healing time in older patients. METHODS: A non-randomized single-centre series of 86 patients from 2007 to 2012 with low-medium trans-sphincteric perianal fistula (< 30% of external sphincter involvement) with or without synchronous perianal abscess were treated with total fistulectomy, sphincteroplasty and closure of the residual cavity technique. RESULTS: Success rate was 97.7% with a healing time of 4 weeks; overall morbidity was 16.2%; recurrence rate was 2.3%; no major alterations of continence were observed. DISCUSSION: Fistulectomy, sphincteroplasty and closure of the residual cavity are associated with a low rate of recurrence and good faecal continence preservation in older patients. This technique can be safely used even with a concomitant perianal abscess, with reduction in healing time and in the number of surgical procedures needed. CONCLUSIONS: Total fistulectomy with sphincteroplasty and partial closure of the residual cavity, as described, is a safe procedure but has to be performed by dedicated colorectal surgeons.


Assuntos
Procedimentos de Cirurgia Plástica , Fístula Retal , Abscesso/etiologia , Abscesso/cirurgia , Idoso , Canal Anal/patologia , Canal Anal/cirurgia , Dissecação/métodos , Incontinência Fecal/etiologia , Incontinência Fecal/prevenção & controle , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos de Cirurgia Plástica/métodos , Fístula Retal/complicações , Fístula Retal/diagnóstico , Fístula Retal/cirurgia , Recidiva , Resultado do Tratamento , Cicatrização
8.
Aging Clin Exp Res ; 29(Suppl 1): 7-13, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27832468

RESUMO

Epithelial thyroid cancers (TC) comprise two differentiated histotypes (DTC), the papillary (PTC) and the follicular (FTC) thyroid carcinomas which, following dedifferentiation, are assumed to give rise to the poorly differentiated thyroid carcinomas and the rare, but highly aggressive and invariably fatal, anaplastic thyroid carcinomas. Although thyroid cancer mortality has not been changed, its annual incidence has increased over the last two decades, mainly because of the improved ability to diagnose malignant transformation in small non-palpable thyroid nodules. Despite DTC patients have a favorable prognosis, aggressive disease is more frequently observed in the elderly showing a higher disease-specific mortality. Of relevance is the high prevalence of nodular thyroid disease in aged patients being higher than 90%, in women older than 60 year, and 60% in men older than 80 year. This implies a careful evaluation of thyroid nodules in this group of patients in order to exclude malignancy. In fact, despite the tremendous progress in the comprehension of the underlying molecular mechanisms deregulated in DTC progression, several aspects of their clinical management remain to be solved and novel diagnostic strategies are sorely needed. Here, we will attempt to review new molecular approaches, which are currently being exploited in order to ameliorate the diagnosis of thyroid nodules.


Assuntos
Progressão da Doença , Nódulo da Glândula Tireoide/diagnóstico , Nódulo da Glândula Tireoide/genética , Idoso , Biópsia por Agulha Fina , Carcinoma Papilar, Variante Folicular/diagnóstico , Carcinoma Papilar, Variante Folicular/genética , Humanos , Incidência , Prevalência , Prognóstico , Carcinoma Anaplásico da Tireoide/diagnóstico , Carcinoma Anaplásico da Tireoide/genética , Neoplasias da Glândula Tireoide/diagnóstico , Neoplasias da Glândula Tireoide/genética
9.
Aging Clin Exp Res ; 29(Suppl 1): 29-33, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27832469

RESUMO

BACKGROUND: Thyroid disease and hyperparathyroidism are the most common endocrine disorders. The incidence of thyroid disease in patients with hyperparathyroidism ranges in the different series from 17 to 84%, and thyroid cancer occurs with an incidence ranging from 2 to 15%. AIM: The aim of our study was to analyze the management of elderly patients with concomitant thyroid and parathyroid disease in order to define the best surgical therapeutic strategy and avoid reoperations associated with a higher risk of complications. METHODS: All consecutive patients (64 patients, age range 60-75 years), undergoing surgery for hyperparathyroidism, from January 2011 to June 2014, were retrospectively evaluated. Enrolled patients were divided into two study groups of patients affected by hyperparathyroidism with or without a concomitant thyroid disease. RESULTS: Out of 64 patients enrolled in our study (24 men, age range 60-75 years), affected by hyperparathyroidism, 34 had an associated thyroid disease and were treated with total thyroidectomy and parathyroidectomy. The group, who underwent parathyroidectomy associated with thyroidectomy, had no greater complications than the group receiving only parathyroidectomy. CONCLUSIONS: Thyroid disease must be excluded in patients affected by hyperparathyroidism. It is difficult to determine whether hyperparathyroidism can be considered a risk factor for thyroid disease, but an accurate preoperative study is essential for a surgery able to treat both thyroid and parathyroid disease. In this way, we avoid the elderly patient, with associated morbidity and increased surgical risk, to undergo a reoperation for thyroid disease, burdened with major complications.


Assuntos
Hiperparatireoidismo/complicações , Hiperparatireoidismo/cirurgia , Doenças da Glândula Tireoide/complicações , Doenças da Glândula Tireoide/cirurgia , Idoso , Feminino , Humanos , Hiperparatireoidismo/sangue , Hiperparatireoidismo/diagnóstico por imagem , Incidência , Masculino , Pessoa de Meia-Idade , Paratireoidectomia , Reoperação , Estudos Retrospectivos , Doenças da Glândula Tireoide/sangue , Doenças da Glândula Tireoide/diagnóstico por imagem , Tireoidectomia , Tomografia Computadorizada por Raios X , Ultrassonografia
10.
Ann Ital Chir ; 87: 23-30, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27025236

RESUMO

AIM: The aim of our study was to compare the efficacy of the circular compression stapler and the circular mechanical stapler in transanal colorectal anastomosis after left colectomy or anterior rectal resection. MATERIALS AND METHODS: We performed a retrospective analysis of 10 patients with disease of the, sigmoid colon or rectum (carcinoma or diverticular disease) who underwent left colectomy or anterior rectal resection with end-to-side transanal colorectal anastomosis. A follow-up was planned for all patients at 1, 3 and 6 months after surgery and the anastomosis was evaluated by colonoscopy at 1 year. RESULTS: In all patients an end-to-side transanal colorectal anastomosis was performed using a circular compression stapler (CCS group) or circular mechanical staplers with titanium staples (CMS group). The mean distance of the anastomosis from the anal margin was 6.4 ± 1.5 cm in the CCS group and 18.2 ± 11.2 cm in the CMS group. All patients in the CCS group expelled the ring after a mean time of 8.2 postoperative days. At 12 months colonoscopy revealed that all CCS patients had a satisfactory anastomosis with mean size of the colic lumen at the level of anastomotic line of 26.3 mm. CONCLUSIONS: In our experience the circular compression stapler a valuable alternative to the circular mechanical stapler for the creation of transanal colorectal anastomosis, in line with the relevant literature. KEY WORDS: Anastomotic leakage, Anastomotic stenosis, Circular compression stapler, Circular mechanical stapler, Transanal colorectal anastomosis.


Assuntos
Colectomia/métodos , Colo/cirurgia , Reto/cirurgia , Grampeadores Cirúrgicos , Idoso , Idoso de 80 Anos ou mais , Anastomose Cirúrgica/instrumentação , Anastomose Cirúrgica/métodos , Fístula Anastomótica/prevenção & controle , Carcinoma/cirurgia , Colo/patologia , Neoplasias Colorretais/cirurgia , Constrição Patológica , Diverticulose Cólica/cirurgia , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Complicações Pós-Operatórias/prevenção & controle , Estudos Retrospectivos
11.
Artigo em Inglês | MEDLINE | ID: mdl-26744608

RESUMO

AIM: The aim of this systematic review was to evaluate the current reported efficacy and the mortality rate of SEMS treatment in uncontrolled bleeding patients. BACKGROUND: Esophageal variceal bleeding (EVB) represents a life threatening pathology. Despite the adequate pharmacologic and endoscopic treatment, continuous or recurrent bleeding, named as uncontrolled bleeding, occurs in 10-20% of cases. A new removable, covered, and self-expanding metal stent (SEMS) was proposed to control the variceal bleeding. MATERIALS AND METHODS: The study was conducted according to the PRISMA statement. Studies were identified by searching MEDLINE (1989-present) and SCOPUS (1989-present) databases. The last search was run on 01 July 2015. RESULTS: Nine studies (period range=2002-2015) met the inclusion criteria and were included in quantitative analysis. High rate of SEMS efficacy in controling acute bleeding was observed, with a reported percentage ranging from 77.7 to 100%. In 10% to 20% of patients, re-bleeding occurred with SEMS in situ. Stent deployment was successful in 77.8% to 100% of patients while 11 to 36.5% of patients experienced stent migration. CONCLUSION: SEMS could be effective and safe in control EVB and can be proposed as a reliable option to ballon tamponed for patient stabilization and as a bridging to other therapeutic approach.

13.
United European Gastroenterol J ; 4(6): 778-783, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28408995

RESUMO

BACKGROUND: The safety and diagnostic accuracy of colonoscopy depend on the quality of colon cleansing. The adenoma detection rate is usually used as a quality measurement score. OBJECTIVE: We aimed to introduce and evaluate three new parameters to determine polyps and adenomas segmental localization and their distribution in association with different bowel preparation levels during colonoscopy. We introduce the multiple adenoma detection rate (the percentage of patients with >2 adenomas diagnosed during colonoscopy), the zonal adenoma detection rate (the percentage of patients with >2 adenomas diagnosed during colonoscopy in different colon areas (rectum, sigmoid, descending, transverse, ascending and cecum colon)), and multi-zone adenoma detection rate (the percentage of patients with >2 adenomas diagnosed during colonoscopy in different colon areas with at least a segment between them with or without lesions (i.e. rectum and descending colon with or without lesions in the sigmoid)). METHODS: We prospectively enrolled outpatients who underwent colonoscopy from January 2013 to October 2014. The bowel preparation quality, according to the Aronchick modified scale, number and location of lesions, Paris classification and histology, were recorded. The multiple adenoma/polyp detection rate, zonal adenoma/polyp detection rate, and multi-zone adenoma/polyp detection rate were determined. RESULTS: In total, 519 consecutive patients (266/253 M/F; mean age 55.3 ± 12.8 years) were enrolled. The adenoma and polyp detection rates were 21% and 35%, respectively. Multiple adenomas were detected in 28 patients. Adenoma and polyp detection rate and new parameters were statistically significantly higher in the optimal as compared with the adequate bowel preparation. CONCLUSIONS: An optimal level of bowel preparation was strongly associated not only with a higher adenoma detection rate, but also with a higher chance of detecting multiple clinically relevant lesions in adjacent or discrete segments of the colon.

14.
Endocrine ; 52(2): 287-95, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26215279

RESUMO

Deregulated expression of the Aurora kinases (Aurora-A, B, and C) is thought to be involved in cell malignant transformation and genomic instability in several cancer types. Over the last decade, a number of small-molecule inhibitors of Aurora kinases have been developed, which have proved to efficiently restrain malignant cell growth and tumorigenicity. Regarding medullary thyroid carcinoma (MTC), we previously showed the efficacy of a pan-Aurora kinase inhibitor (MK-0457) in impairing growth and survival of the MTC-derived cell line TT. In the present study, we sought to establish if one of the Aurora kinases might represent a preferential target for MTC therapy. The effects of selective inhibitors of Aurora-A (MLN8237) and Aurora-B (AZD1152) were analyzed on TT cell proliferation, apoptosis, cell cycle, and ploidy. The two inhibitors reduced TT cell proliferation in a time- and dose-dependent manner, with IC50 of 19.0 ± 2.4 nM for MLN8237 and 401.6 ± 44.1 nM for AZD1152. Immunofluorescence experiments confirmed that AZD1152 inhibited phosphorylation of histone H3 (Ser10) by Aurora-B, while it did not affect Aurora-A autophosphorylation. MLN8237 inhibited Aurora-A autophosphorylation as expected, but at concentrations required to achieve the maximum antiproliferative effects it also abolished H3 (Ser10) phosphorylation. Cytofluorimetry experiments showed that both inhibitors induced accumulation of cells in G2/M phase and increased the subG0/G1 fraction and polyploidy. Finally, both inhibitors triggered apoptosis. We demonstrated that inhibition of either Aurora-A or Aurora-B has antiproliferative effects on TT cells, and thus it would be worthwhile to further investigate the therapeutical potential of Aurora kinase inhibitors in MTC treatment.


Assuntos
Aurora Quinase A/antagonistas & inibidores , Aurora Quinase B/antagonistas & inibidores , Azepinas/uso terapêutico , Carcinoma Neuroendócrino/tratamento farmacológico , Organofosfatos/uso terapêutico , Pirimidinas/uso terapêutico , Quinazolinas/uso terapêutico , Neoplasias da Glândula Tireoide/tratamento farmacológico , Azepinas/farmacologia , Ciclo Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Organofosfatos/farmacologia , Pirimidinas/farmacologia , Quinazolinas/farmacologia
15.
Ann Ital Chir ; 86: 503-7, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26898269

RESUMO

INTRODUCTION: Up to the half of twentieth century, Chievitz organ was considered an embryonal organ, disappearing with growth. But Zenker, in 1953, demonstrated the existence of this organ in adult life, too4. REVIEW: In this article we review the embryology, the macroscopic and microscopic anatomy, the ultrastructure, the functional significance and the pathology of the Chievitz'Juxtaparotid Organ (CJO). The CJO is not a macroscopic apparent organ, but it looks like a nerve. The CJO takes connections with buccinator muscle, at the level of the parotid duct, and the medial pterygoid muscle. The cell parenchyma is enveloped by the connective tissue, that is divided into three layers15, 16: the inner layer -"stratum fibrosum internum"-, composed of collagenous and elastic microfibrils; the middle layer - "stratum nervosum" - containing a lamellar inner core and Ruffini SNF5; the external layer - "stratum fibrosum externum", that is a collagen capsule. The parenchymal cells show a rich enzyme activity. The parenchymal cells may play the same role as glomus cells of the 1st type and Merkel cells20, 21. When a surgical resection is performed for an oral carcinoma, the CJO may be present in the specimen25. The CJO may be wrongly diagnosed as perineural invasion by carcinoma26, 27, 28. CONCLUSION: We report that Chievitz' organ is the only organ in which the cancer does not occur. KEY WORDS: Chievitz' organ, Juxtaoral organ, Parotid gland.


Assuntos
Bochecha/anatomia & histologia , Carcinoma/diagnóstico , Carcinoma/patologia , Bochecha/embriologia , Tecido Conjuntivo/inervação , Tecido Conjuntivo/ultraestrutura , Diagnóstico Diferencial , Células Epiteliais/enzimologia , Células Epiteliais/ultraestrutura , Humanos , Neoplasias Bucais/patologia , Invasividade Neoplásica/diagnóstico , Células Receptoras Sensoriais/ultraestrutura
16.
Int J Surg ; 12(12): 1456-61, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25463766

RESUMO

AIM: Robotic systems are getting widely spread in recent years given the different technical advantages over traditional laparoscopy. Rectal surgery seems to benefit from this approach, for its ability to easily work in a confined space such as the pelvic cavity. The objective is to present results obtained by the robotic approach in patients with rectal cancer and to give technical considerations. METHOD: Data were prospectively collected in order to evaluate surgical and oncological outcomes. Subjects underwent robotic rectal resection in the period between June 2011 and June 2014 at the Department of Digestive Surgery, "S. Maria" Hospital - Terni (Italy). MAIN OUTCOME MEASURES: Patient characteristics and tumor, overall operative time, conversion to open surgery, site of mini-laparotomy for specimen extraction, intraoperative blood loss, intraoperative complications, time to first bowel movement, time-to-liquid and solid intake, postoperative complications, mortality, hospital stay, thirty-day complications, histopathological examination. RESULTS: 40 consecutive patients underwent robotic resection of the rectum. Median operative time was 340 min (235-460 min), no procedure was converted. Median hospital stay was 5 days (3-18 days). Mesorectum resection was complete in all patients. Median number of harvested lymph nodes was 19 (6-35), median distal resection margin was 4 cm (2-8 cm). CONCLUSION: Robotic rectal surgery is safe and feasible in particular by facilitating the surgeon during the delicate phases of tissue dissection.


Assuntos
Neoplasias Retais/cirurgia , Reto/cirurgia , Procedimentos Cirúrgicos Robóticos , Adulto , Idoso , Estudos de Coortes , Procedimentos Cirúrgicos do Sistema Digestório/métodos , Feminino , Humanos , Itália , Laparoscopia/métodos , Tempo de Internação , Excisão de Linfonodo , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Complicações Pós-Operatórias/cirurgia , Estudos Prospectivos , Procedimentos Cirúrgicos Robóticos/efeitos adversos
17.
Int J Surg ; 12 Suppl 2: S82-S85, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25183638

RESUMO

In bloodless surgery a series of measures has to be implemented to reduce the perioperative need for transfusion of whole blood or its components. Jehovah's Witness are the most representative group of patients opting for bloodless surgery as their faith follows strict believes that prohibits receiving blood. Geriatric patients requiring bloodless surgery are even more delicate and represent a challenge for surgeons. The physiological response of the over 65 year population to decreased hemoglobin level is slower and less effective than in young and adult patients. Herby we describe the perioperative protocol implemented in our surgical Department offered to geriatric Jehovah's Witness patients. Preoperative optimization of the patients is the key step in the preparation period. Intraoperative anesthetic and surgical measures are also required along with a strict postoperative follow-up. From our experience, bloodless surgery is feasible in the geriatric population as long as it is performed in specialized centers where a multidisciplinary team is prepared to specifically manage this scenario. Rigorous patients selection and preparation are mandatory.


Assuntos
Perda Sanguínea Cirúrgica/prevenção & controle , Procedimentos Médicos e Cirúrgicos sem Sangue/métodos , Protocolos Clínicos , Testemunhas de Jeová , Idoso , Idoso de 80 Anos ou mais , Transfusão de Sangue , Diagnóstico Precoce , Feminino , Humanos , Masculino , Hemorragia Pós-Operatória/diagnóstico , Hemorragia Pós-Operatória/terapia , Estudos Retrospectivos
18.
Int J Surg ; 12 Suppl 2: S78-S81, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25159228

RESUMO

The features of western world population are rapidly changing. The increment geriatric population obliges clinicians to implement specific recommendations and guidelines to manage these patients. In the field of thyroid surgery, when indications are represented by benign conditions, surgeons and endocrinologists tent to avoid surgery for the increased perioperative risks in the over 70 year old population. We reviewed our experience in thyroid surgery in geriatric patients within the environment of a "week surgery unit". This unit was conceived to offer a highly specialized setting for thyroid patients needing short stay after surgery. Results showed that the surgical outcomes were comparable to the ones from third surgery in young patients. The week surgery approach is the best and safest formula to offer to the geriatric population needing thyroid surgery.


Assuntos
Procedimentos Clínicos , Assistência Perioperatória/métodos , Doenças da Glândula Tireoide/cirurgia , Glândula Tireoide/cirurgia , Tireoidectomia/métodos , Idoso , Estudos de Coortes , Feminino , Humanos , Tempo de Internação , Masculino
19.
Int J Surg ; 12 Suppl 1: S52-6, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24862669

RESUMO

Epithelial thyroid cancers are represented by the differentiated papillary and follicular thyroid carcinomas which, following dedifferentiation, are thought to give rise to the highly aggressive and incurable anaplastic thyroid carcinomas. Although derived from the same cell type, the different thyroid tumors show specific histological features, biological behavior and degree of differentiation as a consequence of different genetic alterations. Over the last few years, our knowledge regarding the molecular alterations underlying thyroid cell malignant transformation and cancer progression has considerably increased; however, the prognosis of differentiated thyroid cancer patients still relies on high-risk clinic-pathological variables. In particular, the actual staging systems provides only a rough prediction for cancer mortality and risk of recurrences, including in each risk group patients with highly different tumor-specific progression, disease-free interval and survival time. In order to improve DTC patient's risk stratification, both the European and the American Thyroid Associations proposed practical guidelines to integrate the actual staging systems with additional clinical features such as the tumor histological variant, the results of post-ablative whole body scan and the serum thyroglobulin levels. Despite that, patients within the same risk group still show a very heterogeneous behavior in terms of disease-free interval. As a consequence, the identification of new prognostic molecular biomarkers able to testify tumor aggressiveness is highly required. Here we'll review recently characterized new molecular markers potentially able to ameliorate the prognosis in DTC patients.


Assuntos
Adenocarcinoma Folicular/diagnóstico , Biomarcadores Tumorais/metabolismo , Carcinoma/diagnóstico , Neoplasias da Glândula Tireoide/diagnóstico , Adenocarcinoma Folicular/metabolismo , Carcinoma/metabolismo , Carcinoma Papilar , Humanos , Prognóstico , Câncer Papilífero da Tireoide , Neoplasias da Glândula Tireoide/metabolismo
20.
Int J Surg ; 12 Suppl 1: S170-2, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24859405

RESUMO

Collar transverse incision is the typical surgical access for operations on thyroid and parathyroids. The cosmetic outcome resulting from its closure is of paramount importance given its anatomical exposure. The traditional methods of closure include metal clips, subcuticular stitch and glue. In this study we evaluated the cosmetic results on 10 patients who had their cervicotomy wound closed with clips comparing it to a second group of 10 patients who had the same incision closed with subcuticular stitch. The cosmetic outcome was evaluated with a questionnaire answered by the patients, by the operating surgeon and by a surgical nurse who was blinded to the technique used. The results of the questionnaire were grossly similar with no differences in the two groups. Only two complications were recorded in the subcuticular group. Both the techniques associate to similar cosmetic outcome, and the choice between the two should be left to the surgeon's personal preference.


Assuntos
Tireoidectomia , Técnicas de Fechamento de Ferimentos/instrumentação , Adulto , Idoso , Estética , Feminino , Humanos , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Satisfação do Paciente , Estudos Retrospectivos , Método Simples-Cego , Inquéritos e Questionários , Suturas , Cicatrização
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