• Title/Summary/Keyword: Colorectal cancer

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Recent Decrease in Colorectal Cancer Mortality Rate is Affected by Birth Cohort in Korea

  • Jee, Yonho;Oh, Chang-Mo;Shin, Aesun
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.9
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    • pp.3951-3955
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    • 2015
  • Background: Colorectal cancer mortality has started to decrease in several developed countries in Asia. The current study aimed to present the long-term trends in colorectal cancer mortality in Korea using joinpoint analysis and age-period-cohort modeling. Materials and Methods: The number of colorectal cancer deaths and the population for each 5-year age group were obtained from Statistics Korea for the period 1984-2013 for adults 30 years and older. Joinpoint regression analysis was conducted to determine changes in trends in age-standardized mortality rates, and age-period-cohort analysis was performed to describe trends in colorectal cancer mortality using the intrinsic estimator method. Results: In men, the age-standardized mortality rate for colorectal cancer increased from 1984 to 2003, and the mortality rates stabilized thereafter, whereas the mortality rate of colorectal cancer in women has decreased since 2004. The age-specific mortality rate of colorectal cancer increased in both men and women over time, whereas decreases in the age-specific mortality rate in younger cohorts were observed. In the age-period-cohort analysis, old age and recent period were associated with higher mortality for both men and women. The birth cohort born after 1919 showed reduced colorectal cancer mortality in both men and women. Conclusions: Our study showed a recent decreasing trend in colorectal cancer mortality in women and a stable trend in men after 2003-2004. These changes in colorectal cancer mortality may be attributed to birth cohort effects.

Inhibitory Effect of Globefish Homogenate on the Growth of Caco-2 Human Colorectal Cancer Cells (복어 균질액의 Caco-2 인간 결장직장암세포 성장 억제 효과에 대한 연구)

  • Kim, Junghoon;Chung, Gujune;Kim, Jungho
    • KSBB Journal
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    • v.32 no.3
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    • pp.212-217
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    • 2017
  • Colorectal cancer is a leading cause of cancer mortality worldwide. Many studies show that most cases of human colorectal cancer arise from adenomatous polyps, which are usually dysplastic, nonmalignant precursor lesions; however, accumulation of multiple somatic mutations leads some to develop into advanced adenoma, which ultimately progresses to an invasive colorectal cancer. Notwithstanding the efforts made to improve chemotherapy, most colorectal cancers are unresponsive to this form of treatment, and malignant colorectal cancers remain incurable. To reduce the incidence of colorectal cancer mortality, further studies to improve colorectal cancer treatment are needed. Here, we show that Globefish homogenate suppresses the growth of Caco-2 human colorectal cancer cells, and that the homogenate inhibits Caco-2 cell proliferation in a dose-dependent manner. These data suggest that Globefish homogenate may suppress colorectal cancer development.

Histopathologic risk factors for lymph node metastasis in patients with T1 colorectal cancer

  • Ha, Ryun Kyong;Han, Kyung Su;Sohn, Dae Kyung;Kim, Byung Chang;Hong, Chang Won;Chang, Hee Jin;Hyun, Jong Hee;Kim, Min Jung;Park, Sung Chan;Oh, Jae Hwan
    • Annals of Surgical Treatment and Research
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    • v.93 no.5
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    • pp.266-271
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    • 2017
  • Purpose: Evaluating the risk of lymph node metastasis (LNM) is critical for determining subsequent treatments following endoscopic resection of T1 colorectal cancer (CRC). This study analyzed histopathologic risk factors for LNM in patients with T1 CRC. Methods: This study involved 745 patients with T1 CRC who underwent endoscopic (n = 97) or surgical (n = 648) resection between January 2001 and December 2015 at the National Cancer Center, Korea. LNM in endoscopically resected patients, which could not be evaluated directly, was estimated indirectly based on follow-up results and histopathologic reports of salvage surgery. The relationships of depth of submucosal invasion, histologic grade, budding, vascular invasion, and background adenoma with LNM were evaluated statistically. Results: Of the 745 patients, 91 (12.2%) were found to be positive for LNM. Univariate and multivariate analyses identified deep submucosal invasion (P = 0.010), histologic high grade (P < 0.001), budding (P = 0.034), and vascular invasion (P < 0.001) as risk factors for LNM. Among the patients with one, two, three, and four risk factors, 6.0%, 18.7%, 36.4%, and 100%, respectively, were positive for LNM. Conclusion: Deep submucosal invasion, histologic high grade, budding, and vascular invasion are risk factors for LNM in patients with T1 colorectal cancer. If any of these risk factors are present, additional surgery following endoscopic resection should be determined after considering the potential risk of LNM and each patient's situation.

Perceptions of Malaysian Colorectal Cancer Patients Regarding Dietary Intake: A Qualitative Exploration

  • Yusof, Afzaninawati Suria;Isa, Zaleha Md.;Shah, Shamsul Azhar
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.2
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    • pp.1151-1154
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    • 2013
  • Background: Changes in dietary practices are known to be associated with changes in the health and disease pattern of a population. This study aimed to qualitatively explore the perception of colorectal cancer patients regarding causes of colorectal cancer and the influence of diet. Materials and Methods: Twelve respondents from three major ethnicities in Malaysia were selected from the quantitative study on dietary pattern and colorectal cancer carried out earlier in this study. In-depth interviews (IDI), conducted from April until June 2012, were mainly in the Malay language with additional use of English and continued until the saturation point was reached. All interviews were autorecorded so that verbatim transcriptions could be created. Results: Causes of colorectal cancer were categorized into internal and external factors. The majority of respondents agreed that there is an association between Western foods and colorectal cancer. Malaysian traditional diet was not related to colorectal cancer as less preservative agents were used. Malaysian diet preparation consisting of taste of cooking (spicy, salty and sour foods) plus type of cooking (fry, grilled and smoked) were considered causes of colorectal cancer. All respondents changed their dietary pattern to healthy food after being diagnosed with colorectal cancer. Advice from doctors regarding suitable food for colorectal cancer was useful in this regard. Conclusions: Eating outside, use of food flavoring ingredients and preservative agents were considered to be the main factors causing colorectal cancer. All respondents admitted that they changed to a healthy diet after being diagnosed with colorectal cancer.

Understanding animal models on colorectal cancer (대장암 동물 모델에 대한 이해)

  • Lim, Do Young
    • The Journal of Medicine and Life Science
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    • v.15 no.2
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    • pp.42-45
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    • 2018
  • Colorectal cancer (CRC) is a third leading cause of cancer-related death in cancer patients. Sporadic and inflammation-related colon carcinogenesis are major mechanism of colorectal cancer. In vivo CRC models have been developed and implicated to understand their mechanisms upon a different type of CRC. Moreover, recently animal models have played important roles in chemopreventive and preclinical trials over the years. In this mini-review, the aim is to introduce various animal models of CRC and help the understanding to establish in vivo experimental plans according to the cancer type of CRC.

Mechanistic Studies of Cyclin-Dependent Kinase Inhibitor 3 (CDKN3) in Colorectal Cancer

  • Yang, Cheng;Sun, Jun-Jun
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.3
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    • pp.965-970
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    • 2015
  • Colorectal cancer is one of the most severe subtypes of cancer, and has the highest propensity to manifest as metastatic disease. Because of the lack of knowledge of events that correlate with tumor cell migration and invasion, few therapeutic options are available. The current study aimed to explore the mechanism of colorectal cancer in hope of identifying the ideal target for future treatment. We first discovered the pro-tumor effect of a controversial cell cycle regulator, cylin-dependent kinase inhibitor 3 (CDKN3), which is highly expressed in colorectal cancer, and the possible related signaling pathways, by bioinformatics tools. We found that CDKN3 had remarkable effects in suppressing colorectal cancer cell proliferation and migration, inducing cell cycle arrest and apoptosis in a colorectal cancer cell line, SW480 cells. Our study, for the first time, provided consistent evidence showing overexpression of cell cycle regulator CDKN3, in colorectal cancer. The in vitro studies in SW480 cells revealed a unique role of CDKN3 in regulating cellular behavior of colorectal cancer cells, and implied the possibility of targeting CDKN3 as a novel treatment for colorectal cancer.

Economic Burden of Colorectal Cancer in Korea

  • Byun, Ju-Young;Yoon, Seok-Jun;Oh, In-Hwan;Kim, Young Ae;Seo, Hye-Young;Lee, Yo-Han
    • Journal of Preventive Medicine and Public Health
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    • v.47 no.2
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    • pp.84-93
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    • 2014
  • Objectives: The incidence and survival rate of colorectal cancer in Korea are increasing because of improved screening, treatment technologies, and lifestyle changes. In this aging population, increases in economic cost result. This study was conducted to estimate the economic burden of colorectal cancer utilizing claims data from the Health Insurance Review and Assessment Service. Methods: Economic burdens of colorectal cancer were estimated using prevalence data and patients were defined as those who received ambulatory treatment from medical institutions or who had been hospitalized due to colorectal cancer under the International Classification of Disease 10th revision codes from C18-C21. The economic burdens of colorectal cancer were calculated as direct costs and indirect costs. Results: The prevalence rate (per 100 000 people) of those who were treated for colorectal cancer during 2010 was 165.48. The economic burdens of colorectal cancer in 2010 were 3 trillion and 100 billion Korean won (KRW), respectively. Direct costs included 1 trillion and 960 billion KRW (62.85%), respectively and indirect costs were 1 trillion and 160 billion (37.15%), respectively. Conclusions: Colorectal cancer has a large economic burden. Efforts should be made to reduce the economic burden of the disease through primary and secondary prevention.

A Preliminary Study for Development of Clinical Practice Guidelines of Korean Medicine in Colorectal Cancer (결장직장암 치료에 대한 한의 임상 가이드라인 개발을 위한 기초연구)

  • Kim, Junyoung;Yoo, Hwaseung;Cho, Junghyo
    • Journal of Haehwa Medicine
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    • v.24 no.2
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    • pp.65-83
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    • 2016
  • Objectives : The purpose of this study is to present the clinical practice guidelines for colorectal cancer through the analysis of existing clinical practice guidelines and randomised clinical trials (RCTs) in Western and Chinese medicine. Methods : The data related to Western and Oriental medical treatment of colorectal cancer were collected using various search engines such as Google Scholar, KIOM OASIS, PUBMED and Jisan library of Daejeon university. Results & Discussion : Colorectal cancer is the third most common cancer in Korea. In recent studies, applying combined oriental and western medicine can improve the survival, quality of life, immune function, and suppress of tumor growth in colorectal cancer. However there isn't still an objective and systemic clinical guideline for colorectal cancer, so we have difficulty in clinical application. This study will be a preliminary study to establish clinical practice guidelines of Korean Medicine for colorectal cancer. Conclusions : Further objective and systemic clinical studies related to Korean Medicine are needed to develop more advanced clinical practice guidelines of colorectal cancer.

Incidence Trends of Colorectal Cancer in the West of Iran During 2000-2005

  • Abdifard, Edris;Ghaderi, Shahab;Hosseini, Saman;Heidari, Mohammad
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.3
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    • pp.1807-1811
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    • 2013
  • Background: Colorectal cancer is a main leading cause of cancer death in western countries. Although many studies have been conducted on incidence trends all over the world in recent years, information regarding changes in incidence of colorectal cancer in Iran is insufficient. The present study of colorectal cancer in the west of Iran during recent years was therefore performed. Materials and Methods: The registered data for colorectal cancer cases in National Cancer Registry System were extracted from the Ministry of Health and Medical Education, Center for Disease Control and Management. The codes from 18-21 among cancers were selected for colon and rectum cancers. Incidence rates were standardized directly using WHO population. The significance of incidence rate trends during 2000-2005 was tested through Poisson regression. Results: 762 cases of colorectal cancer were observed during 6 years in this region, with a gender ratio of men to women of 1.2. It increased from 65 cases in 2000 to 213 cases in 2005 or from 1.5 per100,000 per persons per year to 4.8. Significant increasing trends were evident in Kermanshah and Hamadan provinces; however, change did not reach significance in Ilam and Kurdistan provinces. Conclusions: Colorectal cancer has an increasing trend in the west of Iran. Although it seems that the increasing rate of colorectal cancer is due to increasing of cancer risk factors, some proportion may be related to the improvement of surveillance systems in Iran.

Treatment of Rhus vernifciflua STOKES decoction to colorectal cancer patient (stage IV):single case report (옻나무 전탕추출물을 활용한 대장암 4기 환자치험 1례)

  • Kim, Bo-Geun;Park, Sang-Chae
    • Journal of Korean Traditional Oncology
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    • v.15 no.1
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    • pp.111-117
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    • 2010
  • Background & Objectives: Colorectal Cancer is 10% of all cancer incidence and the motality from colorectal cancer is nearly 450,000 a year. Since chemopreventive agents from Herbal medicine is hot issue recently, to prove antitumor effecicacy of Rhus vernifciflua STOKES decoction (Chijong-dan), clinical study was carried out. Here we report one patient with colorectal cancer of stage IV. The patient had a colorectal cancer (Stage IV, T4N2M1), lymph node metastases and underwent chemotherapy. Methods: The patient visited Hana oriental medicine Clinic in 2009 and was treated using Chijong-dan for 1 year at Hana Oriental Clinic. Results: Chijongdan showed no side effect during its treatment and tumor size was retarded based on CT scanning. Overall, this case report suggests that Rhus vernifciflua STOKES decoction can be a potent cancer preventive agents for colorectal cancer but it is still required to verify the scientific and clinical evidences for Rhus vernifciflua STOKES decoction (Chijong-dan).

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