Factors associated with surgical resection in patients with Crohn's disease: long-term evaluation.

PURPOSE: To evaluate patient characteristics and factors associated with surgical resection in patients with Crohn's disease (CD). METHODS: An analysis was performed on data from 295 patients with CD in follow-up from 2001 to 2018. Medical record data comprised age, gender, location, behavior and duration of the CD, smoking, and extraintestinal manifestation. Patients were divided into two groups according to the presence or absence of surgical resection. RESULTS: Out of the 295 patients with CD, 155 underwent surgical resection (53.2% male, mean age: 43.88 ± 14.35 years). The main indications for surgery were stenosis (44.5%), clinical intractability (15.5%), and intra-abdominal fistulas (15.5%). Smoking (p < 0.001), longer CD duration (p < 0.0001), ileo-colonic location (p = 0.003), stenosing behavior (p < 0.0001), and fistulizing behavior (p < 0.0001) were significantly associated with surgical resection. Initial use of biological was significantly more frequent in the group of patients without surgical resection (p < 0.001). CONCLUSIONS: Patients with CD still frequently need surgical treatment. Smoking (current or past), longer disease time, stenosing and fistulizing behavior, and ileo-colonic localization in CD patients were associated with a higher risk of surgery. Awareness about factors associated with unfavorable outcome allows such patients to be treated more appropriately.

Factors associated with surgical resection in patients with Crohn's disease: long-term evaluation

Purpose: To evaluate patient characteristics and factors associated with surgical resection in patients with Crohn's disease (CD). Methods: An analysis was performed on data from 295 patients with CD in follow-up from 2001 to 2018. Medical record data comprised age, gender, location, behavior and duration of the CD, smoking, and extraintestinal manifestation. Patients were divided into two groups according to the presence or absence of surgical resection. Results: Out of the 295 patients with CD, 155 underwent surgical resection (53.2% male, mean age: 43.88 ± 14.35 years). The main indications for surgery were stenosis (44.5%), clinical intractability (15.5%), and intra-abdominal fistulas (15.5%). Smoking (p < 0.001), longer CD duration (p < 0.0001), ileo-colonic location (p = 0.003), stenosing behavior (p < 0.0001), and fistulizing behavior (p < 0.0001) were significantly associated with surgical resection. Initial use of biological was significantly more frequent in the group of patients without surgical resection (p < 0.001). Conclusions: Patients with CD still frequently need surgical treatment. Smoking (current or past), longer disease time, stenosing and fistulizing behavior, and ileo-colonic localization in CD patients were associated with a higher risk of surgery. Awareness about factors associated with unfavorable outcome allows such patients to be treated more appropriately.

Evaluation of the response rate to neoadjuvant chemoradiotherapy in patients with rectal adenocarcinoma: a retrospective long-term study in two terciary reference centers

Objectives: To evaluate the complete response (CR) rate and surgeries performed in patients with rectal adenocarcinoma who underwent neoadjuvant therapy (NT) at Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo and at Hospital São Paulo, in Ribeirão Preto, from January 2007 to December 2017. Methods: We evaluated 166 medical records of patients with locally advanced rectal adenocarcinoma (T3, T4 or N+) who underwent NT. The regimen consisted of performing conventional (2D) or conformational (three-dimensional-3D/ radiotherapy with modulated intensity - IMRT) at a dose of 45-50.4Gy associated with capecitabine 1650mg/m2 or 5-fluorouracil (5FU) and leucovorin (LV). The following variables were analyzed: gender, age, pretreatment stage, radiotherapy, CR index, local and distant recurrence rates. Surgical treatment and complications were also evaluated. Results: The CR index was 28.3%. Patients treated with 3D/IMRT radiotherapy had a higher rate of CR (36.3% x 4.8%; p < 0.001), higher rates of clinical follow-up (21% x 0%; p < 0.001), lower surgery rates (79% x 100%; p < 0.001), higher rates of transanal resection (37.1% x 9.5%; p = 0.001), lower rates of abdominal rectosigmoidectomy (25.8% x 50%; p = 0.007) and lower rates of abdominoperineal resection of the rectum (16.1% x 40.5%; p = 0.002), when compared to patients treated with 2D radiotherapy. Conclusion Modern radiotherapy techniques such as 3D conformal and IMRT, by offering greater adequacy and precision of treatment, could result in better local control and less toxicity in organs at risk, enabling organ preservation strategies and less invasive approaches in selected cases. (AU)

Retrospective analysis of surgical and oncological results of laparoscopic surgeries performed by residents of coloproctology.

INTRODUCTION: with the improvement and wide acceptance of laparoscopy in colorectal operations, there was a need for specific training of surgeons in training. There are few studies evaluating the postoperative results of laparoscopic colectomies performed by resident physicians and their impact on patient safety. PURPOSE: to analyze the surgical and oncological results of laparoscopic colectomies performed by coloproctology residents and compare them with data in the literature. METHODS: this is a retrospective analysis of patients undergoing laparoscopic colorectal surgery performed by resident physicians at the Hospital das Clínicas de Ribeirão Preto, between 2014 and 2018. The clinical characteristics of the patients were studied, as well as the main surgical and oncological aspects in a period of one year. RESULTS: we analyzed 191 operations, whose main surgical indication was adenocarcinoma, most of them stage III. The mean duration of surgeries was 210±58 minutes. There was a need for a stoma in 21.5% of the patients, mainly loop colostomy. The conversion rate was 23%, with 79.5% due to technical difficulties, and the main predictors of conversion were obesity and intraoperative accidents. The median length of stay was 6 days. Preoperative anemia was associated with a higher rate of complications (11.5%) and reoperations (12%). Surgical resection margins were compromised in 8.6% of cases. The one-year recurrence rate was 3.2% and the mortality rate was 6.3%. CONCLUSIONS: videolaparoscopic colorectal surgery performed by residents showed efficacy and safety similar to data found in the literature.

Retrospective analysis of surgical and oncological results of laparoscopic surgeries performed by residents of coloproctology / Análise retrospectiva dos resultados cirúrgicos e oncológicos em cirurgias videolaparoscópicas realizadas por residentes de coloproctologia

ABSTRACT Introduction: with the improvement and wide acceptance of laparoscopy in colorectal operations, there was a need for specific training of surgeons in training. There are few studies evaluating the postoperative results of laparoscopic colectomies performed by resident physicians and their impact on patient safety. Purpose: to analyze the surgical and oncological results of laparoscopic colectomies performed by coloproctology residents and compare them with data in the literature. Methods: this is a retrospective analysis of patients undergoing laparoscopic colorectal surgery performed by resident physicians at the Hospital das Clínicas de Ribeirão Preto, between 2014 and 2018. The clinical characteristics of the patients were studied, as well as the main surgical and oncological aspects in a period of one year. Results: we analyzed 191 operations, whose main surgical indication was adenocarcinoma, most of them stage III. The mean duration of surgeries was 210±58 minutes. There was a need for a stoma in 21.5% of the patients, mainly loop colostomy. The conversion rate was 23%, with 79.5% due to technical difficulties, and the main predictors of conversion were obesity and intraoperative accidents. The median length of stay was 6 days. Preoperative anemia was associated with a higher rate of complications (11.5%) and reoperations (12%). Surgical resection margins were compromised in 8.6% of cases. The one-year recurrence rate was 3.2% and the mortality rate was 6.3%. Conclusions: videolaparoscopic colorectal surgery performed by residents showed efficacy and safety similar to data found in the literature.

RESUMO Introdução: com o aperfeiçoamento e a ampla aceitação da laparoscopia nas operações colorretais, houve necessidade de treinamento específico dos cirurgiões em formação. Existem poucos estudos avaliando os resultados pós operatórios das colectomias videolaparoscópicas realizadas por médicos residentes e seu impacto na segurança do paciente. Objetivo: analisar os resultados cirúrgicos e oncológicos das colectomias videolaparoscópicas realizadas por residentes de coloproctologia e comparar com dados da literatura. Métodos: trata-se de uma análise retrospectiva de pacientes submetidos a cirurgias colorretais laparoscópicas, realizadas por médicos residentes do Hospital das Clínicas de Ribeirão Preto, entre 2014 e 2018. Foram estudadas as características clínicas dos pacientes bem como os principais aspectos cirúrgicos e oncológicos em um período de um ano. Resultados: analisou-se 191 operações, cuja principal indicação cirúrgica foi adenocarcinoma, a maioria estadio III. A duração média das cirurgias foi 210±58 minutos. Houve necessidade de estoma em 21,5% dos pacientes, principalmente colostomia em alça. A taxa de conversão foi 23%, sendo 79,5% por dificuldades técnicas, e os principais fatores preditores de conversão foram obesidade e acidentes intra-operatórios. A mediana do tempo de internação foi 6 dias. Anemia pré operatória associou-se a uma maior taxa de complicações (11,5%) e reoperações (12%). Houve comprometimento das margens de ressecção cirúrgica em 8,6% dos casos. A taxa de recidiva em um ano foi de 3,2%, e a taxa de mortalidade, 6,3%. Conclusões: a cirurgia colorretal videolaparoscópica realizada por residentes apresentou eficácia e segurança semelhante aos dados encontrados na literatura.

TEACHING BASIC COLONOSCOPY SKILLS: QUALITY AND SAFETY STANDARDS CAN BE FULFILLED IN AN OUTPATIENT UNIVERSITY CENTER.

BACKGROUND: Recent studies have shown that endoscopy fellows can perform colonoscopy effectively and safely. However, little is known about the performance of surgical residents without prior knowledge of endoscopic techniques. OBJECTIVE: To assess whether quality indicators were met at an outpatient endoscopy center and whether surgical residents, without prior upper or lower endoscopy skills, could perform colonoscopy adequately. METHODS: A prospective non-randomized cohort study was undertaken. All exams were performed either by assistant physicians or by residents. Quality measures were compared between those groups. RESULTS: A total of 2720 colonoscopies were analyzed. In the resident group, we observed older patients (57.7±12.7 years vs 51.5±14.5 years, P<0.001), a higher prevalence of screening colonoscopies (52% vs 39.4%, P<0.001) and a higher prevalence of colorectal cancer (6.4% vs 1.8%, P<0.001). The cecal intubation rate was higher in the attending group (99.9% vs 89.3%; P<0.001). The polyp detection rate was 40.8%, and no differences were observed between the studied groups. The residents had a higher rate of perforation in all exams (0.4% vs 0%; P=0.02). Postpolypectomy bleeding and 7-day readmission rates were the same (0.2%). All readmissions in 7 days occurred due to low digestive bleeding, and none required intervention. CONCLUSION: Quality indicators were met at a university outpatient endoscopy center; however, medical residents achieved lower rates of cecal intubation and higher rates of perforation than the attending physicians.

Ensino das habilidades básicas de colonoscopia: os padrões de qualidade e segurança podem ser atendidos em um centro universitário / Teaching basic colonoscopy skills: quality and safety standards can be fulfilled in an outpatient university center

ABSTRACT BACKGROUND: Recent studies have shown that endoscopy fellows can perform colonoscopy effectively and safely. However, little is known about the performance of surgical residents without prior knowledge of endoscopic techniques. OBJECTIVE: To assess whether quality indicators were met at an outpatient endoscopy center and whether surgical residents, without prior upper or lower endoscopy skills, could perform colonoscopy adequately. METHODS: A prospective non-randomized cohort study was undertaken. All exams were performed either by assistant physicians or by residents. Quality measures were compared between those groups. RESULTS: A total of 2720 colonoscopies were analyzed. In the resident group, we observed older patients (57.7±12.7 years vs 51.5±14.5 years, P<0.001), a higher prevalence of screening colonoscopies (52% vs 39.4%, P<0.001) and a higher prevalence of colorectal cancer (6.4% vs 1.8%, P<0.001). The cecal intubation rate was higher in the attending group (99.9% vs 89.3%; P<0.001). The polyp detection rate was 40.8%, and no differences were observed between the studied groups. The residents had a higher rate of perforation in all exams (0.4% vs 0%; P=0.02). Postpolypectomy bleeding and 7-day readmission rates were the same (0.2%). All readmissions in 7 days occurred due to low digestive bleeding, and none required intervention. CONCLUSION: Quality indicators were met at a university outpatient endoscopy center; however, medical residents achieved lower rates of cecal intubation and higher rates of perforation than the attending physicians.

RESUMO CONTEXTO: Estudos recentes mostraram que médicos em treinamento podem realizar a colonoscopia de maneira eficaz e segura. No entanto, pouco se sabe sobre a performance dos médicos residentes de cirurgia sem o conhecimento prévio das técnicas endoscópicas. OBJETIVO: Avaliar se os indicadores de qualidade foram atendidos em um centro de endoscopia ambulatorial e se os residentes de cirurgia, sem habilidades anteriores em endoscopia alta ou baixa, realizaram a colonoscopia de forma adequada. MÉTODOS: Foi realizado um estudo de coorte prospectivo não randomizado. Todos os exames foram realizados por médicos assistentes ou residentes. Os indicadores de qualidade foram comparados entre esses grupos. RESULTADOS: Um total de 2.720 colonoscopias foram analisadas. No grupo de médicos residentes, observamos pacientes mais velhos (57,7±12,7 anos vs 51,5±14,5 anos, P<0,001), maior prevalência de colonoscopias de rastreamento (52% vs 39,4%, P<0,001) e maior prevalência de câncer colorretal (6,4% vs 1,8%, P<0,001). A taxa de intubação cecal foi maior no grupo de médicos assistentes (99,9% vs 89,3%; P<0,001). A taxa de detecção de pólipos foi de 40,8% e não foram observadas diferenças entre os grupos estudados. Os médicos residentes tiveram maior índice de perfuração (0,4% vs 0%; P=0,02). O sangramento pós-polipectomia e as taxas de readmissão em 7 dias foram iguais (0,2%). Todas as readmissões em 7 dias ocorreram devido a hemorragia digestiva baixa e nenhuma intervenção foi necessária. CONCLUSÃO: Os indicadores de qualidade foram alcançados em um centro de endoscopia universitário; no entanto, os médicos residentes alcançaram taxas mais baixas de intubação cecal e taxas mais altas de perfuração do que os médicos assistentes.

The impact of laparoscopic surgery on the symptoms and wellbeing of patients with deep infiltrating endometriosis and bowel involvement.

BACKGROUND: The purpose of this study was to evaluate the symptoms and wellbeing of patients who underwent laparoscopic colorectal resection for deep endometriosis infiltrating the rectum and/or colon in a single reference center. METHODS: We conducted a cross-sectional survey based on a structured questionnaire. All patients underwent laparoscopic discoid resection, segmental resection or shaving for deep endometriosis in a single reference center between October 2014 and October 2019. The following topics were addressed: symptoms related to endometriosis, fertility, disease recurrence and quality of life. The Institutional Review Board approved the study and signed informed consent was required before enrollment. RESULTS: A total of 77 of 160 (48.1%) subjects agreed to answer the questionnaire and were enrolled in the study. The mean age was 36.4 years (range, 24-54 years), and 45.5% of the patients had previously undergone surgery for deep endometriosis. Complete resolution of abdominal pain was observed in 48.1% of subjects after surgery. Pelvic pain was rated on a scale of 0 (no pain) to 10 (worst pain) before and after the procedure. In this evaluation, mean pain scores were reduced after surgery (9.21 ± 1.53 × 3.99 ± 3.14; p < .001). Other positive aspects reported by interviewees were increased willingness to perform daily activities (66.2%), increased physical activity (70.1%), better work performance (72.7%), improved dyspareunia (77.9%) and increased sexual activity (71.4%). Some negative aspects reported after surgery were straining at stool (35.1%), nocturia (24.7%), liquid-feces incontinence (13%), mild urinary incontinence (13%), urinary urgency (11.7%) and flatus incontinence (7.8%). Regarding pregnancy, 59% of patients tried to conceive after surgery, and the success rate was 28.2% (46.2% spontaneous and 53.8% after in vitro fertilization or insemination). CONCLUSIONS: Laparoscopic surgery was associated with pain reduction and improved general wellbeing in patients diagnosed with deep endometriosis and bowel involvement.

ANEMIA AND IRON DEFICIENCY IN INFLAMMATORY BOWEL DISEASE PATIENTS IN A REFERRAL CENTER IN BRAZIL: PREVALENCE AND RISK FACTORS.

BACKGROUND: Data regarding the prevalence of anemia in inflammatory bowel disease (IBD) patients are scarce in Brazil. Anemia and iron deficiency anemia have been known to cause significant functional impairment, lower quality of life, and higher morbidity and mortality and may be correlated with an impact on the cost of treatment. OBJECTIVE: The aim of this study was to estimate the prevalence and risk factors for anemia and iron deficiency anemia in patients with IBD in a tertiary IBD unit in Southeast Brazil. METHODS: We conducted an Institutional Review Board-approved retrospective analysis of an adult IBD cohort (IBD Unit, Ribeirão Preto Medical School, University of São Paulo, Brazil) consisting of 579 patients between January 2014 and July 2018. Clinicoepidemiological data, hemoglobin measurements and serum ferritin were extracted from electronic medical records. Anemia prevalence was calculated among ulcerative colitis (UC) and Crohn's disease (CD) phenotypes. Risk factors for anemia were also calculated. RESULTS: A total of 529 (91%) patients had complete blood counts available in their medical records. Only 35.5% of IBD patients were fully screened for anemia. The prevalence of anemia in IBD patients was 24.6% (29.1% in CD and 19.1% in UC, P=0.008). The anemia was moderate to severe in 16.9% (19.8% in CD and 11.4% in UC, P=0.34). The prevalence of iron deficiency was 52.3% (53.6% in CD and 51.2% in UC, P=0.95). Anemia of chronic disease was present in 14.1% of IBD patients. A total of 53.8% of patients with anemia were in clinical remission. CD was associated with an increased prevalence of anemia (P=0.008; OR=1.76; CI 95% =1.16-2.66) compared to UC. The penetrant disease phenotype in CD was associated with a lower risk of anemia (P<0.0001; OR=0.25; CI 95% =0.14-0.43). Active disease compared to the disease in clinical remission was associated with an increased risk of anemia (P=0.0003; OR=2.61; CI 95% =1.56-4.36) in CD. The presence of anemia was less frequent in patients with CD who underwent surgical bowel resection compared to those who did not undergo surgery (P<0.0001; OR=0.24; CI 95% =0.14-0.40). No differences in anemia prevalence were observed regarding CD localization, age at diagnosis, UC extension or biological therapy (P>0.05). CONCLUSION: Despite the low levels of full screening, anemia and iron deficiency anemia were common manifestations of IBD. CD was associated with an increased risk of anemia, especially with active disease. In addition, patients with CD who underwent surgical bowel resection and penetrant disease phenotype in CD were associated with lower risk of anemia.

Surgical and postoperative evaluations of rectal adenomas excised with a rigid proctoscope.

PURPOSE: This study presents the surgical and postoperative results achieved with a rigid proctoscope using the transanal endoscopic technique to excise rectal adenomas. The results are compared to the results obtained with other currently employed transanal techniques. METHODS: We investigated the medical records of patients who underwent transanal endoscopic operations from April 2000 to June 2018 at two tertiary referral centers for colorectal cancer. RESULTS: This study included 99 patients. The mean age was 65.3 ± 13.3 years. The average size of the adenomas was 4.6 ± 2.3 cm, and their average distance to the anal border was 5.6 ± 3.3 cm. The average operative time was 65.3 ± 41.7 min. In 48.5% of the operations, the specimen was fragmented, and in 59.6% of the cases, the microscopic margins were free. The rates of postoperative complications and relapse were 5% and 19%, respectively. The mean follow-up was 80 ± 61.5 months. CONCLUSIONS: The described proctoscope proved to be a viable technique with results similar to other techniques, with the advantage that it allowed greater accessibility for surgeons. Therefore, its use could be implemented and become widespread in surgical practice.

Laparoscopic bowel resection of deep infiltrating endometriosis. Comparative outcomes of a public teaching hospital and a referral private hospital.

PURPOSE: To compare the operative outcomes of laparoscopic surgical treatment for bowel endometriosis in a public teaching hospital versus in a private referral hospital. METHODS: The indications for surgery, type and time of operation, length of hospital stay, need for a temporary stoma, rate of conversion to open surgery, and postoperative complications were evaluated. RESULTS: One hundred eighty-one patients were included (150 patients, 82.9%, in a private hospital). In the private hospital, there were more patients with infertility [56% vs. 29%; P=0.01] as an indication for surgery) and segmental resection was more common in the private hospital (48% vs. 29%, p=0.05). The average operative time (211.9±83.4 minutes vs. 128 ± 55 minutes, p<0.001) as well as the length of hospital stay (3.97±1.7 days vs. 1.56±0.85 days, p<0.001) was higher in the public hospital; the rate of conversion to open surgery was significantly lower in the private hospital (2% vs. 32.3%, p<0.001). Operations performed at the public hospital were associated with higher rates of postoperative complications (Clavien-Dindo II and II) (38.7% x 11.3%, p=0.021; OR 3.2, CI 95% 1.2-8.0). CONCLUSION: Laparoscopic surgery in private centers was associated with reductions in major complications, surgical times, lengths of stay and rates of conversion to open surgery compared to that in public teaching hospitals.

Anemia e deficiência de ferro em pacientes com doença inflamatória intestinal em um centro de referência no Brasil: prevalência e fatores de risco / Anemia and iron deficiency in inflammatory bowel disease patients in a referral center in brazil: prevalence and risk factors

ABSTRACT BACKGROUND: Data regarding the prevalence of anemia in inflammatory bowel disease (IBD) patients are scarce in Brazil. Anemia and iron deficiency anemia have been known to cause significant functional impairment, lower quality of life, and higher morbidity and mortality and may be correlated with an impact on the cost of treatment. OBJECTIVE: The aim of this study was to estimate the prevalence and risk factors for anemia and iron deficiency anemia in patients with IBD in a tertiary IBD unit in Southeast Brazil. METHODS: We conducted an Institutional Review Board-approved retrospective analysis of an adult IBD cohort (IBD Unit, Ribeirão Preto Medical School, University of São Paulo, Brazil) consisting of 579 patients between January 2014 and July 2018. Clinicoepidemiological data, hemoglobin measurements and serum ferritin were extracted from electronic medical records. Anemia prevalence was calculated among ulcerative colitis (UC) and Crohn's disease (CD) phenotypes. Risk factors for anemia were also calculated. RESULTS: A total of 529 (91%) patients had complete blood counts available in their medical records. Only 35.5% of IBD patients were fully screened for anemia. The prevalence of anemia in IBD patients was 24.6% (29.1% in CD and 19.1% in UC, P=0.008). The anemia was moderate to severe in 16.9% (19.8% in CD and 11.4% in UC, P=0.34). The prevalence of iron deficiency was 52.3% (53.6% in CD and 51.2% in UC, P=0.95). Anemia of chronic disease was present in 14.1% of IBD patients. A total of 53.8% of patients with anemia were in clinical remission. CD was associated with an increased prevalence of anemia (P=0.008; OR=1.76; CI 95% =1.16-2.66) compared to UC. The penetrant disease phenotype in CD was associated with a lower risk of anemia (P<0.0001; OR=0.25; CI 95% =0.14-0.43). Active disease compared to the disease in clinical remission was associated with an increased risk of anemia (P=0.0003; OR=2.61; CI 95% =1.56-4.36) in CD. The presence of anemia was less frequent in patients with CD who underwent surgical bowel resection compared to those who did not undergo surgery (P<0.0001; OR=0.24; CI 95% =0.14-0.40). No differences in anemia prevalence were observed regarding CD localization, age at diagnosis, UC extension or biological therapy (P>0.05). CONCLUSION: Despite the low levels of full screening, anemia and iron deficiency anemia were common manifestations of IBD. CD was associated with an increased risk of anemia, especially with active disease. In addition, patients with CD who underwent surgical bowel resection and penetrant disease phenotype in CD were associated with lower risk of anemia.

RESUMO CONTEXTO: Dados referentes à prevalência de anemia em pacientes com doença inflamatória intestinal (DII) são escassos no Brasil. Sabe-se que anemia e a anemia ferropriva causam comprometimento funcional significativo, menor qualidade de vida e maior morbimortalidade e podem estar correlacionadas com um impacto no custo do tratamento. OBJETIVO: O objetivo deste estudo foi estimar a prevalência e os fatores de risco de anemia e de anemia ferropriva em pacientes com DII em um centro de referência de DII no Sudeste do Brasil. MÉTODOS: Realizamos uma análise retrospectiva dos pacientes com DII adultos, aprovada pelo Comitê de Ética Institucional do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, Brasil, constituída por 579 pacientes no período de janeiro de 2014 a julho de 2018. Dados clínico-epidemiológicos, níveis de hemoglobina e de ferritina sérica foram obtidos dos prontuários eletrônicos. A prevalência de anemia foi calculada entre os fenótipos de retocolite ulcerativa (RCU) e doença de Crohn (DC). Fatores de risco para anemia também foram calculados. RESULTADOS: Um total de 529 (91%) pacientes tinha disponível o exame de hemograma completo em seus prontuários médicos. Apenas 35,5% dos pacientes com DII tinha o rastreamento completo para anemia. A prevalência de anemia nos pacientes com DII foi de 24,6% (29,1% na DC e 19,1% na RCU, P=0,008). A anemia foi moderada a grave em 16,9% (19,8% na DC e 11,4% na RCU, P=0,34). A prevalência de deficiência de ferro foi de 52,3% (53,6% na DC e 51,2% na RCU, P=0,95). Anemia de doença crônica estava presente em 14,1% dos pacientes com DII. Um total de 53,8% dos pacientes com anemia estavam em remissão clínica. A DC esteve associada a um aumento da prevalência de anemia (P=0,008; OR=1,76; IC 95% =1,16-2,66) em comparação à RCU. O fenótipo da doença penetrante na DC foi associado a um menor risco de anemia (P<0,0001; OR=0,25; IC 95% =0,14-0,43). A doença ativa comparada à doença em remissão clínica foi associada a um risco aumentado de anemia (P=0,0003; OR=2,61; IC 95% =1,56-4,36) na DC. A presença de anemia foi menos frequente nos pacientes com DC submetidos à ressecção intestinal em comparação aos que não foram submetidos à cirurgia (P<0,0001; OR=0,24; IC 95% =0,14-0,40). Não foram observadas diferenças na prevalência de anemia em relação à localização da DC, idade ao diagnóstico, extensão da RCU ou terapia biológica (P>0,05). CONCLUSÃO: Apesar do baixo rastreamento completo, tanto a anemia como a anemia ferropriva foram manifestações comuns da DII. A DC foi associada a um risco aumentado de anemia, especialmente com doença ativa. Além disto, pacientes com DC submetidos a ressecção intestinal e/ou com fenótipo penetrante tiveram menor risco de anemia.

PPARG expression in colorectal cancer and its association with staging and clinical evolution.

Purpose To evaluate the gene expression of peroxisome proliferator activated receptors gamma (PPARG) in colorectal tumors and to correlate this data with clinical variables of the patients. Methods We analyzed the gene expression of PPARG in 50 samples of colorectal tumors using real-time reverse transcription polymerase chain reaction, and 20 adjacent normal tissue samples as control. The results of these quantifications were correlated with the respective patients' medical records' clinical information. Results PPARG expression was not different in the tumor tissue compared to the control tissue. Patients older than 60 years, histological type with mucinous differentiation, more advanced staging at the time of diagnosis, and patients who evolved with recurrence of the disease or death did not present higher PPARG expression. Conclusion Expression of PPARGD was not associated with worse prognosis.

Effects of zinc supplementation on fatigue and quality of life in patients with colorectal cancer.

OBJECTIVE: To investigate the effects of oral zinc supplementation on fatigue intensity and quality of life of patients during chemotherapy for colorectal cancer. METHODS: A prospective, randomized, double-blinded, placebo-controlled study was conducted with 24 patients on chemotherapy for colorectal adenocarcinoma in a tertiary care public hospital. The study patients received zinc capsules 35mg (Zinc Group, n=10) or placebo (Placebo Group, n=14) orally, twice daily (70mg/day), for 16 weeks, from the immediate postoperative period to the fourth chemotherapy cycle. Approximately 45 days after surgical resection of the tumor, all patients received a chemotherapeutic regimen. Before each of the four cycles of chemotherapy, the Functional Assessment of Chronic Illness Therapy-Fatigue scale was completed. We used a linear mixed model for longitudinal data for statistical analysis. RESULTS: The scores of quality of life and fatigue questionnaires were similar between the groups during the chemotherapy cycles. The Placebo Group presented worsening of quality of life and increased fatigue between the first and fourth cycles of chemotherapy, but there were no changes in the scores of quality of life or fatigue in the Zinc Group. CONCLUSION: Zinc supplementation prevented fatigue and maintained quality of life of patients with colorectal cancer on chemotherapy. OBJETIVO: Investigar os efeitos da suplementação oral de zinco sobre a intensidade da fadiga e a qualidade de vida de pacientes durante a quimioterapia para neoplasia colorretal. MÉTODOS: Estudo prospectivo, randomizado, controlado e duplo-cego conduzido em um hospital universitário público terciário, com 24 pacientes em regime quimioterápico para adenocarcinoma colorretal. Os pacientes receberam cápsulas de zinco 35mg (Grupo Zinco, n=10) ou placebo (Grupo Placebo, n=14) por via oral, duas vezes ao dia (70mg/dia), durante 16 semanas, desde o período pós-operatório imediato até o quarto ciclo de quimioterapia. Todos os pacientes receberam quimioterapia por aproximadamente 45 dias após a ressecção cirúrgica do tumor. A escala Functional Assessment of Chronic Illness Therapy-Fatigue foi preenchida antes de cada um dos quatro ciclos de quimioterapia. Utilizou-se o modelo de regressão linear misto para dados longitudinais para análise estatística. RESULTADOS: Os escores de qualidade de vida e de fadiga foram semelhantes entre os grupos de estudo durante os ciclos de quimioterapia. O Grupo Placebo apresentou piora da qualidade de vida e da fadiga entre o primeiro e o quarto ciclos de quimioterapia, mas não houve mudança nos escores de qualidade de vida e fadiga no Grupo Zinco. CONCLUSÃO: A suplementação com zinco previne a fadiga e preserva a qualidade de vida de pacientes em quimioterapia para neoplasia colorretal.

Analysis of gene expression EGFR and KRAS, microRNA-21 and microRNA-203 in patients with colon and rectal cancer and correlation with clinical outcome and prognostic factors.

PURPOSE:: To evaluate the expression of EGFR, KRAS genes, microRNAs-21 and 203 in colon and rectal cancer samples, correlated with their age at diagnosis, histological subtype, value of pretreatment CEA, TNM staging and clinical outcome. METHODS:: Expression of genes and microRNAs by real time PCR in tumor and non-tumor samples obtained from surgical treatment of 50 patients. RESULTS:: An increased expression of microRNAs-21 and 203 in tumor samples in relation to non-tumor samples was found. There was no statistically significant difference between the expression of these genes and microRNAs when compared to age at diagnosis and histological subtype. The EGFR gene showed higher expression in relation to the value of CEA diagnosis. The expression of microRNA-203 was progressively lower in relation to the TNM staging and was higher in the patient group in clinical remission. CONCLUSIONS:: The therapy of colon and rectum tumors based on microRNAs remains under investigation reserving huge potential for future applications and clinical interventions in conjunction with existing therapies. We expect, based on the exposed data, to stimulate the development of new therapeutic possibilities, making the treatment of these tumors more effective.

Analysis of gene expression EGFR and KRAS, microRNA-21 and microRNA-203 in patients with colon and rectal cancer and correlation with clinical outcome and prognostic factors

Abstract Purpose: To evaluate the expression of EGFR, KRAS genes, microRNAs-21 and 203 in colon and rectal cancer samples, correlated with their age at diagnosis, histological subtype, value of pretreatment CEA, TNM staging and clinical outcome. Methods: Expression of genes and microRNAs by real time PCR in tumor and non-tumor samples obtained from surgical treatment of 50 patients. Results: An increased expression of microRNAs-21 and 203 in tumor samples in relation to non-tumor samples was found. There was no statistically significant difference between the expression of these genes and microRNAs when compared to age at diagnosis and histological subtype. The EGFR gene showed higher expression in relation to the value of CEA diagnosis. The expression of microRNA-203 was progressively lower in relation to the TNM staging and was higher in the patient group in clinical remission. Conclusions: The therapy of colon and rectum tumors based on microRNAs remains under investigation reserving huge potential for future applications and clinical interventions in conjunction with existing therapies. We expect, based on the exposed data, to stimulate the development of new therapeutic possibilities, making the treatment of these tumors more effective.

Effects of zinc supplementation on fatigue and quality of life in patients with colorectal cancer / Efeitos da suplementação de zinco na fadiga e na qualidade de vida de pacientes com câncer colorretal

ABSTRACT Objective To investigate the effects of oral zinc supplementation on fatigue intensity and quality of life of patients during chemotherapy for colorectal cancer. Methods A prospective, randomized, double-blinded, placebo-controlled study was conducted with 24 patients on chemotherapy for colorectal adenocarcinoma in a tertiary care public hospital. The study patients received zinc capsules 35mg (Zinc Group, n=10) or placebo (Placebo Group, n=14) orally, twice daily (70mg/day), for 16 weeks, from the immediate postoperative period to the fourth chemotherapy cycle. Approximately 45 days after surgical resection of the tumor, all patients received a chemotherapeutic regimen. Before each of the four cycles of chemotherapy, the Functional Assessment of Chronic Illness Therapy-Fatigue scale was completed. We used a linear mixed model for longitudinal data for statistical analysis. Results The scores of quality of life and fatigue questionnaires were similar between the groups during the chemotherapy cycles. The Placebo Group presented worsening of quality of life and increased fatigue between the first and fourth cycles of chemotherapy, but there were no changes in the scores of quality of life or fatigue in the Zinc Group. Conclusion Zinc supplementation prevented fatigue and maintained quality of life of patients with colorectal cancer on chemotherapy.

RESUMO Objetivo Investigar os efeitos da suplementação oral de zinco sobre a intensidade da fadiga e a qualidade de vida de pacientes durante a quimioterapia para neoplasia colorretal. Métodos Estudo prospectivo, randomizado, controlado e duplo-cego conduzido em um hospital universitário público terciário, com 24 pacientes em regime quimioterápico para adenocarcinoma colorretal. Os pacientes receberam cápsulas de zinco 35mg (Grupo Zinco, n=10) ou placebo (Grupo Placebo, n=14) por via oral, duas vezes ao dia (70mg/dia), durante 16 semanas, desde o período pós-operatório imediato até o quarto ciclo de quimioterapia. Todos os pacientes receberam quimioterapia por aproximadamente 45 dias após a ressecção cirúrgica do tumor. A escala Functional Assessment of Chronic Illness Therapy-Fatigue foi preenchida antes de cada um dos quatro ciclos de quimioterapia. Utilizou-se o modelo de regressão linear misto para dados longitudinais para análise estatística. Resultados Os escores de qualidade de vida e de fadiga foram semelhantes entre os grupos de estudo durante os ciclos de quimioterapia. O Grupo Placebo apresentou piora da qualidade de vida e da fadiga entre o primeiro e o quarto ciclos de quimioterapia, mas não houve mudança nos escores de qualidade de vida e fadiga no Grupo Zinco. Conclusão A suplementação com zinco previne a fadiga e preserva a qualidade de vida de pacientes em quimioterapia para neoplasia colorretal.

Adjunctive Hyperbaric Oxygen Therapy promotes successful healing in patients with refractory Crohn's disease.

PURPOSE: To investigate de adjunctive effect of Hyperbaric Oxygen Therapy in a group of patients with refractory Crohn's disease. METHODS: A total of 29 subjects with refractory Crohn's disease were submitted to daily sessions of Hyperbaric Oxygen Therapy, in a 2800 Sechrist Monoplace Hyperbaric Chamber (Sechrist, USA) pressurized to 2.4 ATA. Each session lasted 2 hours. The endpoint was closure of enterocutaneous fistulas and complete healing of Pyoderma Gangrenosum and perineal Crohn's disease. RESULTS: A total of 829 HBOT sessions were performed and no complications were noted. Overall success rate was 76% (22 cases). Pyoderma Gangrenosum and enterocutaneous fistulas had the highest successful healing rates (100% and 91%, respectively). Perineal Crohn's disease healing rate was 65%. CONCLUSION: Adjunctive Hyperbaric Oxygen Therapy promoted satisfactory healing in a group of patients with refractory Crohn's disease.

Copper-Zinc ratio and nutritional status in colorectal cancer patients during the perioperative period.

PURPOSE: This study aimed to determine Cu/Zn ratio, nutritional and inflammatory status in patients during the perioperative period for colorectal cancer. METHODS: The study included patients with histological diagnosis of colorectal adenocarcinoma (Cancer Group, n=46) and healthy volunteers (Control Group, n=28). We determined habitual food intake, body composition, laboratory data of nutritional status, serum calprotectin and plasma Cu and Zn concentrations. Mann-Whitney U-test was performed between-group comparisons and Spearman correlation test for correlations between the variables. RESULTS: Individuals in the Cancer Group presented significantly lower BMI, fat mass, plasma hemoglobin, total protein and albumin as compared with the Control Group. Serum calprotectin[70.1 ng/mL (CI95% 55.8-84.5) vs.53.3 ng/mL (40.3-66.4), p=0.05], plasma Cu concentrations [120 µg/dL(CI95% 114-126) vs. 106 µg/dL(CI95% 98-114), p<0.01] and the Cu/Zn ratio [1.59 (CI95% 1.48-1.71)vs. 1.35 (CI95% 1.23-1.46), p=0.01]were higher in patients with colorectal cancer than in controls. Additionally, the Cancer Group showed negative correlations between the Cu/Zn ratio and Zn intake, hemoglobin, serum albumin, and positive correlation between the Cu/Zn ratio and serum calprotectin. CONCLUSION: These results indicate that an increased plasma Cu/Zn ratio and serum calprotectin, and decreased protein values may be a result of the systemic inflammatory response to the tumor process.

Serological under expression of microRNA-21, microRNA-34a and microRNA-126 in colorectal cancer.

PURPOSE: This paper describes the ability of miRNA value predict oncological outcomes in CRC patients and correlates to clinical and pathologic variables. METHODS: We prospectively analyzed the serological expression of microRNA-21, microRNA-34a, and microRNA-126 in 37 stage II - IV CRC patients and correlate to seven fit counterparts. Serological microRNAs were extracted using the miRNeasy Mini Kit(r) (Qiagen, Hilden, Germany). Quantification of microRNAs was performed using TaqMan Master Mix(r) reagent (Applied Biosystems, USA). RESULTS: We obtained serological underexpression microRNA-21, microRNA-34a, and microRNA-126 in CRC group. However, miRNAs serological values do not impact prognosis. Furthermore, miRNAs was not influenced by CEA values, TNM staging, and histological subtype. CONCLUSION: Despite lower expression of miR-21, miR-34a and miR-126 in the CRC group, no association with poor prognosis was found.