FABIO GUILHERME CASERTA MARYSSAEL DE CAMPOS
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
60 resultados
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Agora exibindo 1 - 10 de 60
- Laparoscopic Total Mesorectal Excision for Rectal Cancer after Neoadjuvant Treatment: Targeting Sphincter-Preserving Surgery(2011) ARAUJO, Sergio Eduardo Alonso; SEID, Victor Edmond; BERTONCINI, Alexandre; CAMPOS, Fabio Guilherme; SOUSA JUNIOR, Afonso; NAHAS, Sergio Carlos; CECCONELLO, IvanBackground/Aims: Laparoscopic total mesorectal excision for rectal cancer is under scrutiny. This study aimed at analyzing feasibility, adequacy of resection, impact on early outcomes after neoadjuvant chemoradiation therapy, and to investigate trend towards indication of laparoscopy for sphincter-preservation in a single university medical center. Methodology: Patients with distal rectal cancer submitted to neoadjuvant treatment followed by laparoscopic total mesorectal excision were prospectively enrolled. The studied parameters were: demographics, previous surgery, BMI, type of operation, rate of sphincter-preserving surgery, duration of surgery, conversion, specimen retrieval, lymphadenectomy, distal and radial margins, intra and postoperative morbidity, reoperations, hospital stay, and mortality. Results: From January 2000 to July 2010, 68 patients were enrolled. Mean age was 60 (30-87) years. There were 27 anterior and 41 abdominoperineal resections. Six patients underwent a totally laparoscopic resection and coloanal anastomosis. There was a trend (p=0.003) towards more sphincter-preserving surgery. Conversion was 4.5%. Intraoperative complication was 7.4%. Postoperative complications occurred in 15%. Mortality was 3%. Lymph-node harvest was 11 (0-33). Mean distal margin was 2.5cm (1-4). Radial margins were positive in 3 (10%) cases. Conclusions: Laparoscopic total mesorectal excision after neoadjuvant treatment is feasible and safe. Sphincter-preserving laparoscopic oncologic rectal surgery has been accomplished more frequently.
- Tissue Content and Pattern of Expression of Claudin-3 and Occludin in Normal and Neoplastic Tissues in Patients with Colorectal Cancer(2022) MATTOS, Roberta Lais Mendonca de; KANNO, Danilo Toshio; CAMPOS, Fabio Guilherme; PEREIRA, Geovanna Pacciulli; YOSHITANI, Mateus Magami; DELBEN, Andress de Godoy; PEREIRA, Jose Aires; MARTINEZ, Carlos Augusto RealBackground Metastasis is the worst prognostic variable of patients with colorectal cancer (CRC). For the development of metastases, it is necessary that cancer cells detach from the primary tumor, migrate into the angiolymphatic system, and invade the tissue where they will develop. The breakdown of the tight junctions (TJs) plays an important role in colorectal metastatic tumors. Claudin-3 and occludin are the main component proteins of TJs. Aim To analyze the expression and tissue content of claudin-3 and occludin in normal and neoplastic tissues of patients with metastatic CRC. Methods Fifty-seven consecutive patients with stage III and IV CRC were included. Fragments of neoplastic tissue were collected from the tumor margins, and samples of the normal tissue were collected from the same patient in a standardized distance of 10 cm from the cranial margin of the tumor. Immunohistochemistry technique was used to identify the tissue staining of claudin-3 and occludin. To measure the content of both proteins in cellular membranes of normal and cancer cells, a validated immunoscore was used. Results Claudin-3 and occludin in normal tissues are in the apical and lateral membranes of cells, while in the neoplastic, in cytoplasm. The mean of the tissue content of claudin-3 in the normal tissue was 2.57 +/- 0.16, while in the neoplastic tissue was 1.03 +/- 0.13. The contents of occludin were 2.77 +/- 0.1 in normal tissue, while in the neoplastic were 1.08 +/- 0.14. Conclusion There is a reduction in the content of the claudin-3 and occludin in the cell membranes of the neoplastic tissue in patients with CRC.
- Extralevator abdominoperineal excision: a technique moving towards definitions and standardization(2018) CAMPOS, Fábio Guilherme; MARTINEZ, Carlos Augusto Real
- Claudin-3 and occludin tissue content in the glands of colonic mucosa with and without a fecal stream(2015) MARTINEZ, Carlos Augusto Real; CAMPOS, Fabio Guilherme Caserta Maryssael de; CARVALHO, Viviel Rodrigo Jose de; FERREIRA, Caroline de Castro; RODRIGUES, Murilo Rocha; SATO, Daniela Tiemi; PEREIRA, Jose AiresThe synthesis of the proteins of the apical tight junctions (TJs) depends on a continuous supply of short-chain fatty acids (SCFAs) in colonic epithelium. No studies have evaluated the tissue contents of the TJs proteins in colon segments devoid of a fecal stream. To evaluate the contents of claudin-3 and occludin in the glands of colonic mucosa devoid of a fecal stream. Forty-five rats underwent a diversion of the fecal stream via a left side colostomy and distal mucous fistula. Three groups of 15 animals each were sacrificed at 6, 12 or 18 weeks after surgery. The presence and severity of colitis were defined by histology and inflammation grading scales, respectively. The expression of claudin-3 and occludin were evaluated by immunohistochemistry, and their contents were evaluated by computer-assisted image analysis. Mann-Whitney and Kruskal-Wallis tests were used to evaluate the results at a significance level of 5 % (p < 0.05). The colonic epithelium without a fecal stream had a higher degree of inflammation. Colonic glands without a fecal stream showed a reduction in claudin-3 content independent of the time and reduction in occludin content after 12 weeks of intestinal exclusion. The content of claudin-3 and occludin were mainly reduced at the apical surfaces of the colon glands, whereas segments retaining the fecal stream were maintained. The content of claudin-3 was not reduced with time, although the levels of occludin were reduced after 6 weeks and did not vary thereafter. Deficiencies in SCFAs decreased the content of claudin-3 and occludin in colonic glands with the areas of worst inflammation, confirming the importance of an adequate supply of SCFAs in maintaining the integrity of TJ proteins.
bookPart Hemorragia digestiva baixa tratamento não cirurgico(2016) CAMPOS, Fábio Guilherme; ARAUJO, Sergio Eduardo Alonso- Surgical Technique and Considerations about Transanal Transection and Single-Stapled (TTSS) Anastomosis: The Search for a Perfect Anastomosis(2021) CAMPOS, Fábio Guilherme; PANDINI, Rafael Vaz; BUSTAMANTE-LOPEZ, Leonardo Alfonso; NAHAS, Sérgio CarlosAbstract The evaluation of preventivemeasures and risk factors for anastomotic leakage has been a constant concern among colorectal surgeons. In this context, the description of a new way to perform a colorectal, coloanal or ileoanal anastomosis, known as transanal transection and single-stapled (TTSS) anastomosis, deserves an appreciation of its qualities, and a discussion about its properties and technical details. In the present paper, the authors review themost recent efforts aiming to reduce anastomotic dehiscence, and describe the TTSS technique in a patient submitted to laparoscopic total proctocolectomy with ileal pouch-anal anastomosis for familial adenomatous polyposis. Surgical perception raises important advantages such as distal rectal transection under visualization, elimination of double-stapling lines (with cost-effectiveness and potential protection against suture dehiscence), elimination of dog ears, and the opportunity to be accomplished via a transanal approach after open, laparoscopic, or robotic colorectal resections. Future studies to confirm these supposed advantages are needed.
- Infliximab Increases the Tissue Contents of Type-I and Type-III Collagen in Colorectal Segments Without Fecal Stream After Hartmann's Procedure(2022) FREITAS, Bruna Zini de Paula; CAMPOS, Fabio Guilherme; KANNO, Danilo Toshio; DELBEN, Andress Godoy; PEREIRA, Jose Aires; MENDONCA, Roberta Lais dos Santos; MARTINEZ, Carlos Augusto Real
bookPart Hemorragia digestiva baixa tratamento cirurgico(2016) CAMPOS, Fábio Guilherme; ARAUJO, Sergio Eduardo Alonso; SARTOR, Maria CristinaconferenceObject LAPAROSCOPIC RIGHT COLECTOMY WITH EXTRACORPOREAL ANASTOMOSIS HAS HIGHER MORBIDITY COMPARED TO INTRACORPOREAL ANASTOMOSIS?(2017) PINTO, R.; GERBASI, L.; CAMARGO, M.; KIMURA, C.; SOARES, D.; BUSTAMANTE-LOPEZ, L.; NAHAS, C.; CAMPOS, F.; CECCONELLO, I.; NAHAS, S.- CAN SUCRALFATE ENMA PREVENT COLTIS IN COLONIC SEGMENTS WITHOUT FCL TRNSIT?(2021) MENDONCA, Roberta Lais Silva; KANNO, Danilo Toshio; PEREIRA, Jose Aires; CAMPOS, Fabio Guilherme; SILVA, Camila Morais Goncalves da; FREITAS, Bruna Zini de Paula; MARTINEZ, Carlos Augusto RealBACKGROUND: Oxidative stress is one of the main mechanisms associated with the rupture of the defense mechanisms of the colonic epithelial barrier; it reduces the tissue content of the claudin-3 and occludin proteins, which are the main constituents of intercellular tight junctions. Sucralfate (SCF) has antioxidant activity and has been used to treat different forms of colitis. AIM: This study aimed to measure the tissue claudin-3 and occludin content of the colon mucosa without fecal transit, subjected to intervention with SCF. METHODS:Thirty-six rats were subjected to left colon colostomy and distal mucous fistula. They were divided into two groups according to euthanasia that was performed 2 or 4 weeks after the intervention. Each group was divided into three subgroups according to the enema applied daily: saline alone, SCF at 1 g/kg/day, or SCF at 2 g/kg/day. Colitis was diagnosed by the histological analysis adopting the previous validate scale. The tissue expression of both proteins was identified by immunohistochemical technique. The content of proteins was quantified by computer-assisted image analysis. RESULTS:The inflammatory score was high in colonic segments without fecal transit, and enemas with SCF reduced the inflammatory score in these segments, mainly in those animals submitted to intervention with SCF in greater concentration and for a longer period of intervention. There was an increase in tissue content of claudin-3 and occludin, related to SCF concentration. The tissue content of both proteins was not related to the intervention time. CONCLUSION:Enemas with SCF reduced the inflammation and increased the tissue content of claudin-3 and occludin in colonic mucosa without fecal stream.