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1.
Dig Dis Sci ; 67(4): 1311-1319, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-33934255

RESUMO

BACKGROUND: Among patients with limited ulcerative colitis (UC), 30% ultimately extend to pancolitis and are at increased risk of adverse clinical outcomes. Risk of endoscopic extension has been found to correlate with clinical features such as early age of onset. AIMS: We sought to determine whether histologic features correlate with disease extension. METHODS: The study population consisted of 40 patients with UC from two large academic centers diagnosed between 2006 and 2017. Eligible cases had a diagnosis of endoscopically limited UC (Montreal E1 or E2) at baseline and ≥ 2 subsequent endoscopic examinations with biopsies. Severity of inflammation was scored using both the Mount Sinai Activity Index and Nancy Histological Index. RESULTS: Patients were divided into two cohorts: those who progressed to pancolitis (Montreal E3) were defined as "Extenders" (n = 21), whereas "Non-extenders" (n = 19) were cases without progression in the follow-up period. The median follow-up time was 58.4 months. The histologic scores in the endoscopically involved mucosa of the index biopsies were not associated with subsequent extension of disease, overall. However, among extender cohort, the index histology scores correlated with biopsy scores at extension (r = 0.455, P = 0.044) and index severity was associated with a shorter time to extension (r = - 0.611, P = 0.003). Furthermore, female patients had a shorter time to extension (P = 0.013). CONCLUSIONS: Histological severity of limited UC is not an independent predictor of extension in UC. However, among patients who subsequently extend, severe inflammation at baseline correlates with shorter progression time and severe inflammation when extension occurs. Patients with limited UC but severe histologic inflammation may warrant more frequent endoscopic surveillance.


Assuntos
Colite Ulcerativa , Biópsia , Colite Ulcerativa/patologia , Colonoscopia , Feminino , Humanos , Inflamação/patologia , Mucosa Intestinal/diagnóstico por imagem , Mucosa Intestinal/patologia
2.
Reprod Biomed Online ; 38(1): 95-99, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30660386

RESUMO

Omega-3 polyunsaturated fatty acids (PUFAs) are essential fatty acids, derived mostly from fish oil, that have a significant anti-inflammatory effect. Data from animal studies support their role in the reproductive mechanism, and recent human studies suggest a positive effect on sperm quality and natural conception. Their general role in human fertility, and specifically in IVF treatment, however, is not clear. A few small, prospective cohort studies have examined the relationship between serum PUFAs and outcome measures and success in IVF, with conflicting results. Some have demonstrated a better chance of live birth with increased levels of serum omega-3 PUFAs, whereas others have failed to show such a correlation, and the reasons for such differences are not clear. Moreover, no well-designed, published studies have assessing whether the administration of omega-3 PUFAs before IVF treatment can improve clinical pregnancy and live birth rates. The development of safe and well-tolerated pharmaceutical forms of the active omega-3 PUFAs, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), mean that assessment of this question is now possible and future studies are warranted.


Assuntos
Ácidos Graxos Ômega-3/sangue , Fertilidade/fisiologia , Fertilização in vitro , Ácidos Graxos Ômega-3/administração & dosagem , Feminino , Fertilidade/efeitos dos fármacos , Humanos , Gravidez , Taxa de Gravidez
3.
Dig Dis Sci ; 64(3): 863-874, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30334112

RESUMO

BACKGROUND: "Real-life" data of retention rate and persistence of adalimumab in inflammatory bowel disease are still limited. AIMS: To analyze retention rate, persistence, and safety of adalimumab in a 9-year real-life cohort of inflammatory bowel disease patients. METHODS: In this observational, retrospective single-center study, all adult patients treated with adalimumab as the first- and second-line biological treatment for steroid-dependent or refractory inflammatory bowel disease between March 2008 and March 2017 were included. Primary outcomes were persistence, retention rate, and adverse events; the secondary outcome was the identification of predictors of withdrawal. RESULTS: Ninety-six out of 181 patients (53%) withdrew their first course of adalimumab. The retention rate was 47% and 46.9% in Crohn's disease and ulcerative colitis patients, respectively; median persistence was 26 and 24 months in CD and UC patients, respectively. The cumulative probability of treatment persistence was 80.2%, 54.5%, and 29.6% and 69.6%, 40.4%, and 21.5% in CD and UC patients, respectively. The incidence rate of any adverse event was 12.5/100 patients-year; severe adverse events were 1.7/100 patients-year. The Cox regression revealed that CD patients with baseline disease duration > 72 months have a higher likelihood for withdrawal due to failure and/or adverse events (HR 1.62, 95% CI 1-2.62, p = 0.04); no predictors of discontinuation were found in UC. CONCLUSIONS: Adalimumab showed a great persistence in the first 12 months of therapy and excellent safety profile. Early treatment of CD patients could increase efficacy and reduce the adverse event rate.


Assuntos
Adalimumab/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Produtos Biológicos/uso terapêutico , Colite Ulcerativa/tratamento farmacológico , Doença de Crohn/tratamento farmacológico , Adalimumab/efeitos adversos , Adulto , Idoso , Anti-Inflamatórios/efeitos adversos , Produtos Biológicos/efeitos adversos , Colite Ulcerativa/diagnóstico , Colite Ulcerativa/imunologia , Doença de Crohn/diagnóstico , Doença de Crohn/imunologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/diagnóstico , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Feminino , Humanos , Incidência , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo , Falha de Tratamento , Adulto Jovem
4.
Dig Dis Sci ; 64(11): 3284-3290, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31041636

RESUMO

BACKGROUND: Simkania negevensis is an obligate intracellular Gram-negative bacterium (family Simkaniaceae, order Chlamydiales) that has been isolated from domestic and mains water supplies, is able to infect human macrophages, and can induce an inflammatory response in the host. METHODS: From June to December 2016, in a single-center observational study, colonic Crohn's disease patients and controls (subjects undergoing screening for colorectal cancer) underwent blood tests to identify serum-specific immunoglobulin G (IgG) and immunoglobulin A (IgA) to S. negevensis and a colonoscopy with biopsies for detection of S. negevensis DNA by polymerase chain reaction (PCR). RESULTS: Forty-three Crohn's disease patients and 18 controls were enrolled. Crohn's disease patients had higher prevalence of IgA antibodies to S. negevensis compared with controls (20.9% versus 0%, p = 0.04). Simkaniaceae negevensis DNA was detected in 34.9% and 5.6% of intestinal biopsies in Crohn's disease patients and controls, respectively (p = 0.02). All Crohn's disease patients with PCR-positive biopsies for S. negevensis were IgG seropositive, with specific IgA in 60% of them (p < 0.001). Immunosuppressive therapies, extraintestinal manifestations, or disease activity did not influence the presence of S. negevensis in the Crohn's disease population. CONCLUSIONS: We identified S. negevensis in Crohn's disease patients by demonstrating the presence of S. negevensis mucosal DNA and seropositivity to the bacterium. These results could support the presence of an acute or persistent S. negevensis infection and suggest a possible role in the pathogenesis of Crohn's disease.


Assuntos
Chlamydiales/isolamento & purificação , Doença de Crohn/sangue , Doença de Crohn/diagnóstico , Infecções por Bactérias Gram-Negativas/sangue , Infecções por Bactérias Gram-Negativas/diagnóstico , Adulto , Idoso , Colonoscopia/métodos , Doença de Crohn/epidemiologia , Feminino , Infecções por Bactérias Gram-Negativas/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade
5.
Clin Gastroenterol Hepatol ; 16(8): 1268-1275.e2, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29391271

RESUMO

BACKGROUND & AIMS: High fecal levels of calprotectin indicate mucosal inflammation and have been shown to predict relapse in patients with ulcerative colitis (UC). Eicosapentaenoic acid (EPA), the major component of n-3 fish oil, has anti-inflammatory properties in patients with chronic inflammatory disorders. We performed a placebo-controlled trial of patients with UC at risk of relapse to determine the ability of the free fatty acid form of EPA (EPA-FFA) to reduce intestinal inflammation, using fecal level of calprotectin as a marker. METHODS: From June 2014 to May 2016, 60 patients with UC with a partial Mayo score < 2 and fecal calprotectin ≥150 µg/g, in stable therapy for at least the 3 previous months, were randomly assigned to groups (1:1) given either EPA-FFA (500 mg, twice daily) or placebo for 6 months. A colonoscopy was performed at baseline. Clinical assessments and measurements of fecal calprotectin were made at baseline, at study months 3 and 6, or the time of clinical relapse. Patients with a relapse of UC underwent a second colonoscopy. The primary end point was a 100-point reduction in fecal levels of calprotectin at 6 months from the baseline value; the secondary end point was maintenance of clinical remission at 6 months. RESULTS: The primary end point was achieved by 19 of 30 patients (63.3%) in the EPA-FFA group vs 4 of 30 patients (13.3%) in the placebo group (odds ratio, 12.0; 95% CI, 3.12-46.24; P < .001). The secondary end point was achieved by 23 of 30 patients (76.7%) in the EPA-FFA group vs 15 of 30 (50%) patients in the placebo group (OR, 3.29; 95% CI, 1.08-9.95; P = .035). No serious adverse events were observed. CONCLUSIONS: In a placebo-controlled trial of 60 patients with UC, we found 6 months' administration of EPA-FFA to reduce fecal levels of calprotectin with no serious adverse events. This agent might be used to induce and maintain symptom-free remission in patients with UC. ClinicalTrials.gov number: NCT02179372.


Assuntos
Anti-Inflamatórios/administração & dosagem , Quimioprevenção/métodos , Colite Ulcerativa/prevenção & controle , Ácido Eicosapentaenoico/administração & dosagem , Fezes/química , Complexo Antígeno L1 Leucocitário/análise , Prevenção Secundária/métodos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Anti-Inflamatórios/efeitos adversos , Colite Ulcerativa/tratamento farmacológico , Colo/patologia , Colonoscopia , Método Duplo-Cego , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/patologia , Ácido Eicosapentaenoico/efeitos adversos , Feminino , Humanos , Mucosa Intestinal/patologia , Masculino , Pessoa de Meia-Idade , Placebos/administração & dosagem , Resultado do Tratamento , Adulto Jovem
6.
Dig Dis Sci ; 62(4): 1016-1024, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-28110377

RESUMO

BACKGROUND: Pouchitis is the most frequent complication after ileal pouch-anal anastomosis for refractory ulcerative colitis. A non-standardized preventative treatment exists. Sulfasalazine has proved effective in acute pouchitis therapy. AIMS: The aim of this study was to retrospectively evaluate the effect of sulfasalazine in primary prophylaxis of pouchitis after proctocolectomy with ileal pouch-anal anastomosis. METHODS: Data files of patients who underwent total proctocolectomy with ileal pouch-anal anastomosis for refractory ulcerative colitis and/or dysplasia from January 2007 to December 2014, with a follow-up until August 2015, were analyzed. After closure of loop ileostomy, on a voluntary basis, patients received a primary prophylaxis of pouchitis with sulfasalazine (2000 mg per day) continually until acute pouchitis flare and/or drop out due to side effects. RESULTS: Follow-up data were available for 51 of the 55 surgical patients. Median follow-up time was 68 months (range 10-104). Thirty postoperative complications occurred in 25 patients. 45% of patients developed pouchitis. Sulfasalazine prophylaxis was administered in 39.2% of patients; 15% of the these developed pouchitis versus 64.5% (20/31) of the non-sulfasalazine patients (p < 0.001). Pouchitis-free survival curves were 90.55 months in sulfasalazine patients and 44.46 in non-sulfasalazine patients (log-rank test p = 0.001, Breslow p = 0.001). CONCLUSION: Sulfasalazine may be potentially administered in pouchitis prophylaxis after proctocolectomy with ileal pouch-anal anastomosis, but large prospectively controlled trials are needed.


Assuntos
Canal Anal/cirurgia , Colite Ulcerativa/cirurgia , Bolsas Cólicas/efeitos adversos , Pouchite/prevenção & controle , Proctocolectomia Restauradora/efeitos adversos , Sulfassalazina/uso terapêutico , Adolescente , Adulto , Idoso , Anastomose Cirúrgica/efeitos adversos , Anastomose Cirúrgica/tendências , Bolsas Cólicas/tendências , Feminino , Seguimentos , Fármacos Gastrointestinais/uso terapêutico , Humanos , Masculino , Pessoa de Meia-Idade , Pouchite/etiologia , Proctocolectomia Restauradora/tendências , Estudos Prospectivos , Estudos Retrospectivos , Adulto Jovem
7.
Int J Mol Sci ; 18(12)2017 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-29206211

RESUMO

Eating habits have changed dramatically over the years, leading to an imbalance in the ratio of n-6/n-3 polyunsaturated fatty acids (PUFAs) in favour of n-6 PUFAs, particularly in the Western diet. Meanwhile, the incidence of inflammatory bowel disease (IBD) is increasing worldwide. Recent epidemiological data indicate the potential beneficial effect of n-3 PUFAs in ulcerative colitis (UC) prevention, whereas consumption of a higher ratio of n-6 PUFAs versus n-3 PUFAs has been associated with an increased UC incidence. The long-chain dietary n-3 PUFAs are the major components of n-3 fish oil and have been shown to have anti-inflammatory properties in several chronic inflammatory disorders, being involved in the regulation of immunological and inflammatory responses. Despite experimental evidence implying biological plausibility, clinical data are still controversial, especially in Crohn's disease. Clinical trials of fish-oil derivatives in IBD have produced mixed results, showing beneficial effects, but failing to demonstrate a clear protective effect in preventing clinical relapse. Such data are insufficient to make a recommendation for the use of n-3 PUFAs in clinical practice. Here, we present the findings of a comprehensive literature search on the role of n-3 PUFAs in IBD development and treatment, and highlight new therapeutic perspectives.


Assuntos
Anti-Inflamatórios/uso terapêutico , Ácidos Graxos Ômega-3/uso terapêutico , Ácidos Graxos Ômega-6/uso terapêutico , Doenças Inflamatórias Intestinais/prevenção & controle , Animais , Colite Ulcerativa/prevenção & controle , Doença de Crohn/prevenção & controle , Óleos de Peixe/uso terapêutico , Humanos
9.
Gastrointest Endosc ; 84(1): 115-125.e4, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26769407

RESUMO

BACKGROUND AND AIMS: It is not possible to accurately count adenomas in many patients with familial adenomatous polyposis (FAP). Nevertheless, polyp counts are critical in evaluating each patient's response to interventions. However, the U.S. Food and Drug Administration no longer recognizes the decrease in polyp burden as a sufficient chemoprevention trial treatment endpoint requiring a measure of "clinical benefit." To develop endpoints for future industry-sponsored chemopreventive trials, the International Society for Gastrointestinal Hereditary Tumors (InSIGHT) developed an FAP staging and intervention classification scheme for lower-GI tract polyposis. METHODS: Twenty-four colonoscopy or sigmoidoscopy videos were reviewed by 26 clinicians familiar with diagnosis and treatment of FAP. The reviewers independently assigned a stage to a case by using the proposed system and chose a stage-specific intervention for each case. Our endpoint was the degree of concordance among reviewers staging and intervention assessments. RESULTS: The staging and intervention ratings of the 26 reviewers were highly concordant (ρ = 0.710; 95% credible interval, 0.651-0.759). Sixty-two percent of reviewers agreed on the FAP stage, and 90% of scores were within ±1 stage of the mode. Sixty percent of reviewers agreed on the intervention, and 86% chose an intervention within ±1 level of the mode. CONCLUSIONS: The proposed FAP colon polyposis staging system and stage-specific intervention are based on a high degree of agreement on the part of experts in the review of individual cases of polyposis. Therefore, reliable and clinically relevant means for measuring trial outcomes can be developed. Outlier cases showing wide scatter in stage assignment call for individualized attention and may be inappropriate for enrollment in clinical trials for this reason.


Assuntos
Polipose Adenomatosa do Colo/patologia , Cirurgia Colorretal , Gastroenterologistas , Neoplasias Primárias Múltiplas/patologia , Índice de Gravidade de Doença , Polipose Adenomatosa do Colo/terapia , Colectomia , Colonoscopia , Consenso , Ressecção Endoscópica de Mucosa , Feminino , Humanos , Masculino , Estadiamento de Neoplasias , Sigmoidoscopia , Sulfassalazina , Gravação em Vídeo
10.
J Emerg Med ; 48(3): e59-62, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25511465

RESUMO

BACKGROUND: Fitz-Hugh-Curtis syndrome is a rare extra-pelvic complication of genital infection involving the perihepatic capsule. Most cases have been described in women in association with pelvic inflammatory disease; in rare cases it has been reported in men. Because the main symptom is acute abdominal pain, and laboratory and imaging findings are frequently nonspecific, the differential diagnosis, considering other gastrointestinal or renal diseases, can be difficult in the early stage of the syndrome, leading to frequent misdiagnosis and mismanagement. CASE REPORT: We report a case of Fitz-Hugh-Curtis syndrome in a 26-year-old man who first presented to the emergency department with acute abdominal pain, vomiting, and fever. Diagnosis was possible on the basis of clinical signs of orchiepididymitis, abnormal ultrasound findings, and specialist consultation with the Sexually Transmitted Infection Clinic. An acute gonoccocal infection was revealed, which was complicated by a collection of free perihepatic fluid and a subcapsular hypoechoic focal lesion. Prompt antibiotic therapy was established, with complete resolution of the symptoms within a few days. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Awareness of the clinical presentation, imaging, and laboratory findings during the acute phase of Fitz-Hugh-Curtis syndrome could help emergency physicians to make an early diagnosis and to correctly manage such patients. Improved diagnostic skills could prevent chronic complications that are especially a risk in the case of delayed or minor genitourinary symptoms.


Assuntos
Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/microbiologia , Gonorreia/complicações , Hepatite/diagnóstico , Hepatite/microbiologia , Doença Inflamatória Pélvica/diagnóstico , Doença Inflamatória Pélvica/microbiologia , Peritonite/diagnóstico , Peritonite/microbiologia , Dor Abdominal/microbiologia , Doença Aguda , Adulto , Diagnóstico Diferencial , Febre/microbiologia , Humanos , Masculino , Vômito/microbiologia
11.
Gut ; 63(11): 1760-8, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24470281

RESUMO

BACKGROUND: Oral administration of the omega-3 fatty acid eicosapentaenoic acid (EPA), as the free fatty acid (FFA), leads to EPA incorporation into, and reduced growth of, experimental colorectal cancer liver metastases (CRCLM). DESIGN: We performed a Phase II double-blind, randomised, placebo-controlled trial of EPA-FFA 2 g daily in patients undergoing liver resection surgery for CRCLM. The patients took EPA-FFA (n=43) or placebo (n=45) prior to surgery. The primary end-point was the CRCLM Ki67 proliferation index (PI). Secondary end-points included safety and tolerability of EPA-FFA, tumour fatty acid content and CD31-positive vascularity. We also analysed overall survival (OS) and disease-free survival (DFS). RESULTS: The median (range) duration of EPA-FFA treatment was 30 (12-65) days. Treatment groups were well matched with no significant difference in disease burden at surgery or preoperative chemotherapy. EPA-FFA treatment was well tolerated with no excess of postoperative complications. Tumour tissue from EPA-FFA-treated patients demonstrated a 40% increase in EPA content (p=0.0008), no difference in Ki67 PI, but reduced vascularity in 'EPA-naïve' individuals (p=0.075). EPA-FFA also demonstrated antiangiogenic activity in vitro. In the first 18 months after CRCLM resection, EPA-FFA-treated individuals obtained OS benefit compared with placebo, although early CRC recurrence rates were similar. CONCLUSIONS: EPA-FFA therapy is safe and well tolerated in patients with advanced CRC undergoing liver surgery. EPA-FFA may have antiangiogenic properties. Remarkably, limited preoperative treatment may provide postoperative OS benefit. Phase III clinical evaluation of prolonged EPA-FFA treatment in CRCLM patients is warranted. TRIAL IDENTIFIER: ClinicalTrials.gov NCT01070355.


Assuntos
Anticarcinógenos/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/patologia , Ácido Eicosapentaenoico/farmacologia , Neoplasias Hepáticas/secundário , Adulto , Idoso , Idoso de 80 Anos ou mais , Cromatografia Líquida , Método Duplo-Cego , Ácido Eicosapentaenoico/metabolismo , Feminino , Humanos , Imuno-Histoquímica , Neoplasias Hepáticas/irrigação sanguínea , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/cirurgia , Masculino , Pessoa de Meia-Idade , Molécula-1 de Adesão Celular Endotelial a Plaquetas/metabolismo , Espectrometria de Massas em Tandem
12.
Carcinogenesis ; 35(10): 2314-20, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25123131

RESUMO

Colorectal cancer (CRC) is one of the major causes of cancer death worldwide. The development of novel anti-CRC agents able to overcome drug resistance and/or off-target toxicity is of pivotal importance. The mammalian target of rapamycin (mTOR) plays a critical role in CRC, regulating protein translation and controlling cell growth, proliferation, metabolism and survival. The aim of this study was to explore the effect of a combination of three natural compounds, eicosapentaenoic acid-free fatty acid (EPA-FFA), epigallocatechin-3-gallate (EGCG) and proanthocyanidins (grape seed [GS] extract) at low cytotoxic concentrations on CRC cells and test their activity on mTOR and translational regulation. The CRC cell lines HCT116 and SW480 were treated for 24h with combinations of EPA-FFA (0-150 µM), EGCG (0-175 µM) and GS extract (0-15 µM) to evaluate the effect on cell viability. The low cytotoxic combination of EPA-FFA 150 µM, EGCG 175 µM and GS extract 15 µM completely inhibited the mTOR signaling in HCT116 and SW480 cells, reaching an effect stronger than or comparable to that of the mTOR inhibitor Rapamycin in HCT116 or SW480 cells, respectively. Moreover, the treatment led to changes of protein translation of ribosomal proteins, c-Myc and cyclin D1. In addition, we found a reduction of clonal capability in both cell lines, with block of cell cycle in G0G1 and induction of apoptosis. Our data suggest that the low cytotoxic combination of EPA-FFA, EGCG and GS extract, tested for the first time here, inhibits mTOR signaling and thus could be considered for CRC treatment.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/farmacologia , Catequina/análogos & derivados , Neoplasias Colorretais/tratamento farmacológico , Ácido Eicosapentaenoico/farmacologia , Proantocianidinas/farmacologia , Serina-Treonina Quinases TOR/metabolismo , Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Catequina/administração & dosagem , Catequina/farmacologia , Linhagem Celular Tumoral/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Neoplasias Colorretais/metabolismo , Ciclina D1/genética , Ciclina D1/metabolismo , Ácido Eicosapentaenoico/administração & dosagem , Extrato de Sementes de Uva/farmacologia , Humanos , Proantocianidinas/administração & dosagem , Proteínas Proto-Oncogênicas c-myc/genética , Proteínas Proto-Oncogênicas c-myc/metabolismo , Transdução de Sinais/efeitos dos fármacos
13.
Int J Cancer ; 135(9): 2004-13, 2014 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-24676631

RESUMO

Inflammatory bowel diseases are associated with increased risk of developing colitis-associated colorectal cancer (CAC). Epidemiological data show that the consumption of ω-3 polyunsaturated fatty acids (ω-3 PUFAs) decreases the risk of sporadic colorectal cancer (CRC). Importantly, recent data have shown that eicosapentaenoic acid-free fatty acid (EPA-FFA) reduces polyp formation and growth in models of familial adenomatous polyposis. However, the effects of dietary EPA-FFA are unknown in CAC. We tested the effectiveness of substituting EPA-FFA, for other dietary fats, in preventing inflammation and cancer in the AOM-DSS model of CAC. The AOM-DSS protocols were designed to evaluate the effect of EPA-FFA on both initiation and promotion of carcinogenesis. We found that EPA-FFA diet strongly decreased tumor multiplicity, incidence and maximum tumor size in the promotion and initiation arms. Moreover EPA-FFA, in particular in the initiation arm, led to reduced cell proliferation and nuclear ß-catenin expression, whilst it increased apoptosis. In both arms, EPA-FFA treatment led to increased membrane switch from ω-6 to ω-3 PUFAs and a concomitant reduction in PGE2 production. We observed no significant changes in intestinal inflammation between EPA-FFA treated arms and AOM-DSS controls. Importantly, we found that EPA-FFA treatment restored the loss of Notch signaling found in the AOM-DSS control and resulted in the enrichment of Lactobacillus species in the gut microbiota. Taken together, our data suggest that EPA-FFA is an excellent candidate for CRC chemoprevention in CAC.


Assuntos
Colite/complicações , Colo/patologia , Neoplasias Colorretais/prevenção & controle , Ácido Eicosapentaenoico/administração & dosagem , Ácidos Graxos não Esterificados/administração & dosagem , Trato Gastrointestinal/efeitos dos fármacos , Microbiota/fisiologia , Receptores Notch/metabolismo , Animais , Apoptose , Proliferação de Células , Colite/induzido quimicamente , Colite/patologia , Colo/microbiologia , Neoplasias Colorretais/etiologia , Neoplasias Colorretais/patologia , Trato Gastrointestinal/metabolismo , Trato Gastrointestinal/microbiologia , Técnicas Imunoenzimáticas , Inflamação/etiologia , Inflamação/patologia , Inflamação/prevenção & controle , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Microbiota/efeitos dos fármacos , RNA Mensageiro/genética , Reação em Cadeia da Polimerase em Tempo Real , Reação em Cadeia da Polimerase Via Transcriptase Reversa
14.
Dig Liver Dis ; 55(2): 230-234, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-35879185

RESUMO

BACKGROUND: Ustekinumab (UST) and vedolizumab (VDZ) are biologic therapies for moderate-to-severe Crohn's disease (CD) in patients who failed or had contraindication to anti-TNF treatment. AIMS: To evaluate ustekinumab efficacy as third-line treatment after swapping from VDZ for failure. METHODS: We conducted a monocentric, retrospective, observational study where CD patients were followed for 12 months from the beginning of UST therapy. We assessed clinical activity (HBI) and laboratory markers (CRP) at the initiation of UST therapy (T0) and after 2(T2), 6(T6) and 12(T12) months. Endoscopic activity was recorded at T0 and T12. We registered data regarding their clinical history and previous biologic treatments. Steroid-free clinical remission was defined as HBI ≤ 4 without need for steroids. Clinical response was defined as HBI reduction of at least three points or the suspension of steroids. RESULTS: 27 CD patients treated with UST after VDZ failure had a minimum follow up of 12 months and were included. All patients had previously been treated with anti-TNF agents. After 12 months, steroid-free clinical remission was evident in 15 (55.5%) patients, 5 (18.5%) had clinical response, while 7 (26%) had suspended for failure or persisted on treatment after optimization. CONCLUSIONS: Ustekinumab should be considered as third-line biologic treatment in multi-refractory CD patients.


Assuntos
Produtos Biológicos , Doença de Crohn , Humanos , Ustekinumab/efeitos adversos , Doença de Crohn/tratamento farmacológico , Estudos Retrospectivos , Inibidores do Fator de Necrose Tumoral/uso terapêutico , Produtos Biológicos/uso terapêutico , Resultado do Tratamento , Indução de Remissão
18.
Dig Dis Sci ; 56(10): 2957-62, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21484317

RESUMO

BACKGROUND AND AIM: Despite the increasing evidence of MAP/DNA isolation in Crohn's disease (CD), its potential pathogenetic role remains unclear. To further clarify the possible relationship between MAP and CD, we investigated the presence of IS900 DNA fragment in feces from Crohn's disease and ulcerative colitis (UC) patients and from healthy controls (HC). METHODS: Stool samples were collected from 31 CD, 20 UC, and 23 HC and stored at -20°C in 200-mg aliquots. DNA was extracted. MAP presence was detected with a specific PCR amplifying a 409-bp fragment from IS900. The specificity of PCR for IS900 was confirmed sequencing three positive products. Statistical analysis was performed using the Chi-square test. RESULTS: Twenty-one of 31 CD (68%), 13 of 20 UC (65%) and 11 of 23 HC (48%) were MAP-positive (CD vs. HC: p = ns; UC vs. HC: p = ns). With the limits of a small sample size, the IS900-positive percentage in CD and UC was higher than HC, although the difference was not statistically significant. CONCLUSIONS: The possibility to track the MAP presence in human feces represents a new approach to the "MAP hypothesis". Detection of MAP DNA in feces is very common, reaching very high prevalence both in CD and in UC and even in HC. Our findings seem consistent with a high prevalence of MAP asymptomatic infection among the general population and so the possible involvement of MAP in CD pathogenesis could be linked to a specific immune defective response.


Assuntos
Sequência de Bases/genética , Colite Ulcerativa/microbiologia , Doença de Crohn/microbiologia , DNA Bacteriano/genética , Fezes/microbiologia , Mycobacterium avium subsp. paratuberculosis/genética , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Distribuição de Qui-Quadrado , DNA Bacteriano/análise , Interpretação Estatística de Dados , Fezes/química , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Adulto Jovem
19.
Gut ; 59(7): 918-25, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20348368

RESUMO

OBJECTIVE: The omega-3 polyunsaturated fatty acid eicosapentaenoic acid (EPA) has anticolorectal cancer activity in vitro and in preclinical models. The present study tested whether a novel, enteric-coated formulation of EPA, as the free fatty acid (EPA-FFA), has chemopreventative efficacy in patients with familial adenomatous polyposis (FAP), in a randomised, double-blind, placebo-controlled trial. METHODS: Patients undergoing endoscopic surveillance of their retained rectum postcolectomy were randomised to EPA-FFA (SLA Pharma) 2 g daily or placebo for 6 months. The number and size of polyps in an area of mucosa defined by a tattoo were determined before and after intervention. Global rectal polyp burden was scored (-1, 0, +1) by examination of video endoscopy records. Mucosal fatty acid content was measured by gas chromatography-mass spectrometry. RESULTS: 55 patients with FAP were evaluated by an intention-to-treat analysis (EPA-FFA 28, placebo 27). Treatment with EPA-FFA for 6 months was associated with a mean 22.4% (95% CI 5.1% to 39.6%) reduction in polyp number (p=0.012) and a 29.8% (3.6% to 56.1%) decrease in the sum of polyp diameters (p=0.027). Global polyp burden worsened over 6 months in the placebo group (-0.34) unlike the EPA-FFA group (+0.09, difference 0.42 (0.10-0.75), p=0.011). EPA-FFA treatment led to a mean 2.6-fold increase in mucosal EPA levels (p=0.018 compared with placebo). EPA-FFA was well tolerated with an incidence of adverse events similar to placebo. CONCLUSIONS: EPA-FFA has chemopreventative efficacy in FAP, to a degree similar to that previously observed with selective cyclo-oxygenase-2 inhibitors. EPA holds promise as a colorectal cancer chemoprevention agent with a favourable safety profile.


Assuntos
Polipose Adenomatosa do Colo/prevenção & controle , Anticarcinógenos/uso terapêutico , Ácido Eicosapentaenoico/uso terapêutico , Pólipos Intestinais/prevenção & controle , Neoplasias Retais/prevenção & controle , Polipose Adenomatosa do Colo/metabolismo , Polipose Adenomatosa do Colo/cirurgia , Adolescente , Adulto , Idoso , Anticarcinógenos/efeitos adversos , Colectomia , Progressão da Doença , Método Duplo-Cego , Ácido Eicosapentaenoico/efeitos adversos , Ácidos Graxos/metabolismo , Feminino , Humanos , Mucosa Intestinal/metabolismo , Pólipos Intestinais/metabolismo , Pólipos Intestinais/patologia , Masculino , Pessoa de Meia-Idade , Cooperação do Paciente , Neoplasias Retais/metabolismo , Neoplasias Retais/patologia , Sigmoidoscopia , Resultado do Tratamento , Adulto Jovem
20.
Dig Liver Dis ; 53(3): 271-276, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33451910

RESUMO

BACKGROUND: Italy has been one of the most affected countries in the world by COVID-19. There has been increasing concern regarding the impact of COVID-19 on patients with inflammatory bowel disease (IBD), particularly in patients treated with immunosuppressants or biologics. The aim of our study is to understand the incidence of COVID-19 in a large cohort of patients with IBD. Furthermore, we analyzed possible risk factors for infection and severity of COVID-19. METHODS: This was an observational study evaluating the impact of COVID-19 on IBD patients in a single tertiary center. A 23 multiple-choice-question anonymous survey was administered to 1200 patients with IBD between March 10th and June 10th 2020. RESULTS: 1158 questionnaires were analyzed. The majority of patients had Crohn's disease (CD) (60%) and most of them were in clinical remission. Among the 26 patients (2.2%) who tested positive for COVID-19, only 5 (3CD) were on biological treatment and none required hospitalization. Two patients died and were on treatment with mesalazine only. Of the 1158 patients, 521 were on biological therapy, which was discontinued in 85 (16.3%) and delayed in 195 patients (37.4%). A worsening of IBD symptoms was observed in 200 patients on biological therapy (38.4%). Most of these patients, 189 (94.5%), had stopped or delayed biological treatment, while 11 (5.5%) had continued their therapy regularly (p<0.001). CONCLUSIONS: Our data are in line with the current literature and confirm a higher incidence compared to the general population. Biological therapy for IBD seems to not be a risk factor for infection and should not be discontinued in order to avoid IBD relapse.


Assuntos
COVID-19/epidemiologia , Colite Ulcerativa/epidemiologia , Doença de Crohn/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados/uso terapêutico , Produtos Biológicos/uso terapêutico , COVID-19/fisiopatologia , Colite Ulcerativa/tratamento farmacológico , Colite Ulcerativa/fisiopatologia , Doença de Crohn/tratamento farmacológico , Doença de Crohn/fisiopatologia , Desprescrições , Feminino , Fármacos Gastrointestinais/uso terapêutico , Hospitalização/estatística & dados numéricos , Humanos , Doenças Inflamatórias Intestinais/tratamento farmacológico , Doenças Inflamatórias Intestinais/epidemiologia , Doenças Inflamatórias Intestinais/fisiopatologia , Itália/epidemiologia , Masculino , Mesalamina/uso terapêutico , Pessoa de Meia-Idade , SARS-CoV-2 , Sulfassalazina/uso terapêutico , Centros de Atenção Terciária , Tempo para o Tratamento , Inibidores do Fator de Necrose Tumoral/uso terapêutico , Adulto Jovem
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