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Perez RO Habr-Gama A Nishida Arazawa ST Rawet V Coelho Siqueira SA Kiss DR Gama-Rodrigues JJ 《International journal of colorectal disease》2005,20(5):434-439
Objective The objective was to determine the presence and frequency of micrometastasis in lymph nodes of patients with rectal cancer treated by preoperative chemoradiation followed by curative resection.Patients and methods All 56 patients included were treated with 5-FU and leucovorin plus 5,040 cGy, followed by radical surgery and were diagnosed with stage II distal rectal adenocarcinoma after complete pathological examination (ypT3-4N0M0). Immunohistochemistry was assessed with cytokeratin monoclonal antibody AE1/AE3. Three 4-m paraffin sections were obtained from each lymph node, cut at 50 m apart from each other. The results were reviewed by two independent pathologists.Results Mean number of lymph nodes was 9.6 per patient. Four patients (7%) and seven lymph nodes (1.35%) were positive for micrometastasis. Three patients had pT3 and one a pT4 tumor. One of the patients had positive micrometastasis and the presence of mucinous deposits. One other patient had mucinous deposits without any micrometastasis. All four patients are alive with no evidence of recurrent disease. Fourteen patients negative for micrometastasis had recurrent disease (25%), eight systemic (14.7%) and six locoregional (10.3%). There were two cancer-related deaths. The mean follow-up period was 39 months.Conclusion Patients with rectal cancer treated by preoperative chemoradiation showed a surprisingly low rate of micrometastasis detection (7%), even in high-risk patients (T3 and T4 tumors). Lymph node micrometastasis was not associated with decreased overall or disease-free survival. The identification of mucinous deposits on lymph nodes with no viable tumor cells may be direct evidence of lymph node downstaging. The downstaging effect of preoperative chemoradiation therapy may be significant in reducing even micrometastasis detection in low rectal cancer managed by this treatment strategy. 相似文献
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Prathyusha Konda John A Roque III Liubov M Lifshits Angelita Alcos Eissa Azzam Ge Shi Colin G Cameron Sherri A McFarland Shashi Gujar 《American journal of cancer research》2022,12(1):210
Cancer therapies that generate T cell-based anti-cancer immune responses are critical for clinical success and are favored over traditional therapies. One way to elicit T cell immune responses and generate long-lasting anti-cancer immunity is through induction of immunogenic cell death (ICD), a form of regulated cell death that promotes antigenicity and adjuvanticity within dying cells. Therefore, research in the last decade has focused on developing cancer therapies which stimulate ICD. Herein, we report novel photodynamic therapy (PDT) compounds with immunomodulatory and ICD inducing properties. PDT is a clinically approved, minimally invasive anti-cancer treatment option and has been extensively investigated for its tumor-destroying properties, lower side effects, and immune activation capabilities. In this study, we explore two structurally related ruthenium compounds, ML19B01 and ML19B02, that can be activated with near infrared light to elicit superior cytotoxic properties. In addition to its direct cell killing abilities, we investigated the effect of our PSs on immunological pathways upon activation. PDT treatment with ML19B01 and ML19B02 induced differential expression of reactive oxygen species, proinflammatory response-mediating genes, and heat shock proteins. Dying melanoma cells induced by ML19B01-PDT and ML19B02-PDT contained ICD hallmarks such as calreticulin, ATP, and HMGB1, initiated activation of antigen presenting cells, and were efficiently phagocytosed by bone marrow-derived dendritic cells. Most importantly, despite the distinct profiles of ICD hallmark inducing capacities, vaccination with both PDT-induced dying cancer cells established anti-tumor immunity that protected mice against subsequent challenge with melanoma cells. 相似文献
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Itamar S. Santos Márcio S. Bittencourt Ilka R.S. Oliveira Angelita G. Souza Danilo P. Meireles Tatjana Rundek Murilo Foppa Daniel C. Bezerra Cláudia M.V. Freire Leonard H. Roelke Sayonara Carrilho Isabela M. Benseñor Paulo A. Lotufo 《Atherosclerosis》2014
Objective
Carotid intima–media thickness (IMT) is a noninvasive measurement of early atherosclerosis. Most IMT studies have involved populations with low rates of racial blending. The aim of the present article is to describe IMT value distributions and analyze the influence of sex and race on IMT values in a large Brazilian sample, a setting with a high rate of racial admixture.Methods
The Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) is a multicenter cohort of 15,105 adult (aged 35–74 years) civil servants in six Brazilian cities. Baseline assessment included IMT measurements in both common carotid arteries. Race was self-reported. We studied the association between sex and race with IMT values using multiple linear regression models. We conducted analyses in all and low-risk individuals, defined as those without classical cardiovascular risk factors.Results
We analyzed complete IMT data from 10,405 ELSA-Brasil participants. We present nomograms by age for all and low-risk individuals, stratified by sex and race. We found that men had significantly higher maximal IMT values compared with women (β = 0.058; P < 0.001). This association remained for low-risk individuals (β = 0.027; P = 0.001). In addition, Brown and White individuals had lower maximal IMT values compared with Black individuals for all (β = −0.034 and β = −0.054, respectively; P < 0.001) and low-risk individuals (β = −0.027; P = 0.013 and β = −0.035; P < 0.001, respectively).Conclusion
We found significantly higher IMT values in men. We found significantly higher IMT values in Black individuals than White and Brown individuals. These results persisted when analyses were restricted to low-risk individuals. 相似文献16.
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WuDunn D Cantor LB Palanca-Capistrano AM Hoop J Alvi NP Finley C Lakhani V Burnstein A Knotts SL 《American journal of ophthalmology》2002,134(4):521-528
PURPOSE: To compare the safety and efficacy of intraoperative 5-fluorouracil (5-FU) or Intraoperative mitomycin C (MMC) in eyes undergoing primary trabeculectomy.DESIGN: Prospective double-masked randomized clinical trial.METHODS: One hundred fifteen eyes of 103 patients with uncontrolled intraocular pressure (IOP) despite maximally tolerated medical therapy or laser were prospectively randomized in a double-masked fashion to one of two treatment groups in a single institution setting. Subject's eyes underwent primary trabeculectomy with either topical 5-FU (50 mg/ml for 5 minutes) or topical MMC (0.2 mg/ml for 2 minutes). Primary outcome measures included the number of eyes achieving target pressures of 21, 18, 15, and 12 mm Hg at 6 and 12 months postoperatively. Secondary outcome measures included IOP, best-corrected visual acuity, complications, and interventions.RESULTS: Of the 115 eyes, 57 received 5-FU while 58 received MMC. A target IOP of 21 mm Hg at 6 months was achieved in 53 of 56 (95%) eyes in the 5-FU group and 54 of 57 (95%) eyes in the MMC group (P = 1.00). At 12 months, 45 of 48 (94%) eyes in the 5-FU group met a target IOP of 21 mm Hg while 48 of 54 (89%) eyes in the MMC group did (P =.49). The most common complications in each group were persistent choroidal effusions and bleb leak.CONCLUSION: Our study suggests that intraoperative topical 5-FU is at least as effective as intraoperative topical MMC in reducing IOP of eyes undergoing primary trabeculectomy. 相似文献
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Gluteal and Perianal Hidradenitis Suppurativa 总被引:1,自引:1,他引:0
Bocchini SF Habr-Gama A Kiss DR Imperiale AR Araujo SE 《Diseases of the colon and rectum》2003,46(7):944-949
PURPOSE: Hidradenitis suppurativa is a chronic inflammatory disease of the skin and subcutaneous tissue. Extensive gluteal and perianal disease represents a challenge presentation. The aim of this study was to present results of management of extensive hidradenitis suppurativa in gluteal, perineal, and inguinal areas. METHODS: From January 1980 to May 2000, 56 patients underwent treatment of hidradenitis suppurativa in gluteal, perineal, and inguinal areas through wide excision; 52 (93 percent) were male and 36 (64 percent) were white. Mean age was 40 years. We evaluated distribution of disease, associated conditions, use of diverting colostomy, management of operative wounds, time to complete healing, complications, and recurrence. RESULTS: Twenty-one (37.6 percent) and 17 (30.6 percent) patients had gluteal and perineal disease, respectively. Squamous-cell carcinoma and Crohn's disease were observed in one patient each. Wide surgical excision was performed in all. Healing by second intention was the choice in 32 (57.1 percent) patients, and 24 (42.9 percent) patients underwent delayed skin-grafting. Diverting colostomy was used in 23 (41 percent) patients. Mean time for complete healing in the nongrafted group was 10 (range, 7-17) weeks and in the skin graft group was 6 (range, 3-9) weeks. New resection was performed in five (8.9 percent) patients. Partial graft loss rate was 37.5 percent and recurrence was observed in only one (1.8 percent) patient. CONCLUSION: Significant morbidity derives from extensive gluteal and perineal hidradenitis suppurativa caused by the disease extension and large wounds that result from surgical treatment. Wide surgical excision is the treatment of choice and leads to cure. Skin-grafting and healing by second intention lead to effective wound healing. 相似文献
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