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ABSTRACT: BACKGROUND: Detailed nationwide surveys of the epidemiologic and clinical characteristics of bullous congenital ichthyosiform erythroderma (BCIE) (novel synonym: keratinolytic ichthyosis) in a large population have not been performed previously to our knowledge. OBJECTIVE: We sought to estimate the number of patients with BCIE who visited dermatology departments in Japan in 2002 and to clarify the clinical and epidemiologic features of the disease. METHODS: A nationwide mail survey was sent to dermatology departments and consisted of an initial survey to estimate the number of individuals with BCIE and a second survey to obtain data on the clinical characteristics of these patients. RESULTS: The total number of patients with BCIE in Japan was estimated to be 55 (95% confidence interval, 35-75). Clinical data were able to be collected from 28 cases. Clinical manifestations included rash in 27 cases (96.4%), erythroderma in 19 cases (67.9%), and generalized blistering in 15 cases (57.7%). Approximately 75% of patients younger than 20 years showed generalized blistering. Hystrixlike scales were present in 8 female patients (57.1%), whereas large scales were present in 8 male patients (57.1%). Among the 19 patients for whom histopathological information was available, 17 (89.5%) showed granular degeneration. LIMITATIONS: Patients with BCIE who have few subjective symptoms may not have visited a dermatology department, potentially resulting in an underestimation of the number of patients with BCIE. CONCLUSION: Important epidemiologic and clinical information on characteristics of BCIE in Japan was obtained, including an estimate of the total number of patients with BCIE in Japan.
Journal of the American Academy of Dermatology 11/2012; · 3.99 Impact Factor
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ABSTRACT: To examine the combined impacts of healthy lifestyle behaviours on cardiovascular disease (CVD) in Asians.
A total of 18 747 men and 24 263 women aged 40-79 without a history of stroke or coronary heart disease (CHD) at baseline in 1988-90 were followed up until 2006. Participants scored one point for each following lifestyle behaviour: consumption of fruits ≥1 intake per day, fish ≥1 intake per day, milk almost every day, exercise ≥5 h per week and/or walking ≥1 h per day, body mass index (BMI) of 21-25 kg/m(2), alcohol intake <46.0 g per day, non-smoking, and sleep duration of 5.5-7.5 h per day. During 16.5 years of follow-up, there were 1907 deaths from total CVDs including 849 strokes and 402 CHDs. For both genders, persons with the highest scores had the lowest CVD mortality. The multivariable hazard ratios (95% confidence interval, population-attributable fraction) for the highest (7-8) vs. lowest (0-2) score categories were 0.35 (0.25-0.49, 52.3%) in men, and 0.24 (0.16-0.36, 44.6%) in women. Similar associations were found for stroke: 0.36 (0.22-0.58, 45.0%) in men and 0.28 (0.15-0.53, 43.4%) in women, and for CHD: 0.19 (0.08-0.50, 76.2%) and 0.20 (0.09-0.47, 34.5%), respectively.
Mortality from stroke, CHD, and CVD in the highest healthy lifestyle score category was one-third in men and one-fourth in women of those in the lowest scores, suggesting that a large fraction of CVD could be prevented through lifestyle modification.
European Heart Journal 02/2012; 33(4):467-77. · 10.48 Impact Factor
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ABSTRACT: The study aims to examine the association between salt preference and mortality from stroke and coronary heart disease (CHD).
Between 1988 and 1990, 35515 men and 49275 women aged 40-79 years completed a self-administered questionnaire in the Japan Collaborative Cohort Study for Evaluation of Cancer Risk sponsored by Monbusho. During a median duration of 16.4 years, 1970 stroke and 922 CHD deaths were observed. Salt preference was divided into three groups: low, moderate and high.
Mortality rates per 1000 person-year from stroke were 2.0 for men, 1.3 for women and 1.6 for total subjects. The respective mortality from CHD was 1.1, 0.5 and 0.8, and that from total cardiovascular disease was 4.6, 2.9 and 3.6. Salt preference was positively associated with mortality from stroke for both sexes. The multivariable hazard ratios of stroke mortality for high versus low salt preference were 1.21(0.99-1.49) for men, 1.22(1.00-1.49) for women and 1.23(1.06-1.41) for total subjects. That positive association was primarily observed among male heavy drinkers (≥ 46.0 g ethanol/day). Salt preference tended to be inversely associated with mortality from CHD.
Salt preference was associated with increased mortality from stroke for both sexes, particularly for male heavy drinkers.
Preventive Medicine 10/2011; 54(1):32-7. · 3.22 Impact Factor
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ABSTRACT: Only a few reports have dealt with the association of antioxidant vitamin intakes with mortality or morbidity from cardiovascular disease in Asia. We investigated the relation of dietary vitamins A, E, and C intake with mortality from cardiovascular disease for Japanese men and women.
The subjects were 23,119 men and 35 611 women aged 40 to 79 years without a history of cardiovascular disease or cancer who responded to the food frequency questionnaire as part of the Japan Collaborative Cohort Study for Cancer Risk (JACC) Study. They were followed up for a median period of 16.5 years. Hazard ratios were calculated per quintile of dietary vitamins A, E, and C intake by using Cox proportional hazard model.
During the 859,962 person-year follow-up, there were 2690 deaths (1343 men and 1347 women) from cardiovascular disease, comprising 1227 (607 men and 620 women) from stroke and 557 (311 men and 246 women) from coronary heart disease. The multivariable hazard ratios (95% CI) associated with the highest versus lowest quintiles of vitamin C intake were 0.70 (0.54 to 0.92) for total stroke, 0.63 (0.41 to 0.97) for coronary heart disease, and 0.79 (0.66 to 0.94) for total cardiovascular disease for women, but the inverse associations observed were weak and did not reach statistical significance for men. No significant association was observed between vitamins A or E intake and risk of mortality for either men or women.
Vitamin C intake is inversely associated with mortality from cardiovascular disease for Japanese women.
Stroke 06/2011; 42(6):1665-72. · 5.73 Impact Factor
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ABSTRACT: The mean total birth rate of the world had been gradually decreasing, with the rate in Japan now at its lowest level internationally. From a public health perspective, it is important to determine the impact of the number of children on all-cause mortality.
A total of 96,311 individuals from the Japan Collaborative Cohort Study were followed from 1988-90 for an average of 14.4 years. Hazard ratios (HRs) with a 95% confidence interval were calculated from proportional hazard models to estimate the risk of all-cause mortality according to the number of children.
As of 2006, a total of 18,807 deaths had occurred. Both childless men and women showed higher all-cause mortality risks than those with two children (HR: 1.17 in men and 1.29 in women). Those with one child also showed higher risks (1.13 and 1.16, respectively). Having four or more children among men and five or more children among women also posed a risk (1.16 in men with four children and 1.22 in women with five or more children), showing a U-shaped association between the number of children and all-cause mortality risk. The risk of having only one child seemed evident with the decrease in age among both men and women, while the risk of having many children was apparent with the increase in age.
We found a U-shaped association between the number of children and all-cause mortality among both men and women, with the lowest risk among those with two children.
The European Journal of Public Health 11/2010; 21(6):732-7. · 2.73 Impact Factor
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ABSTRACT: Prospective epidemiologic studies have generated mixed results regarding the association between saturated fatty acid (SFA) intake and risk of ischemic heart disease (IHD) and stroke. These associations have not been extensively studied in Asians.
The aim of this study was to test the hypothesis that SFA intake is associated with the risk of cardiovascular disease mortality in Japanese whose average SFA intake is low.
The Japan Collaborative Cohort Study for Evaluation of Cancer Risk (JACC Study) comprised 58,453 Japanese men and women who completed a food-frequency questionnaire. Participants were aged 40-79 y at baseline (1988-1990) and were followed up for 14.1 y. Associations of energy-adjusted SFA intake with mortality from stroke (intraparenchymal and subarachnoid hemorrhages and ischemic stroke) and heart diseases (IHD, cardiac arrest, and heart failure) were examined after adjustment for age, sex, and cardiovascular disease risk and dietary factors.
We observed inverse associations of SFA intake with mortality from total stroke [n = 976; multivariable hazard ratio (95% CI) for highest compared with lowest quintiles: 0.69 (0.53, 0.89); P for trend = 0.004], intraparenchymal hemorrhage [n = 224; 0.48 (0.27, 0.85); P for trend = 0.03], and ischemic stroke [n = 321; 0.58 (0.37, 0.90); P for trend = 0.01]. No multivariable-adjusted associations were observed between SFA and mortality from subarachnoid hemorrhage [n = 153; 0.91 (0.46, 1.80); P for trend = 0.47] and heart disease [n = 836; 0.89 (0.68, 1.15); P for trend = 0.59].
SFA intake was inversely associated with mortality from total stroke, including intraparenchymal hemorrhage and ischemic stroke subtypes, in this Japanese cohort.
American Journal of Clinical Nutrition 10/2010; 92(4):759-65. · 6.67 Impact Factor
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ABSTRACT: The purpose of this study was to compare current awareness of the "On a Code of Conduct for Scientists" (OCCS) among members of the Japanese Society for Hygiene (JSH).
An anonymous self-administered questionnaire was mailed to JSH members, including 439 councilors and 376 junior members (who were under 50 years of age with a membership of 3 years or longer, excluding councilors). Councilors were surveyed from November to December 2007, while junior members were surveyed from November to December 2008.
The overall response rate was 40.6% (n = 331/815), with responses from 46.7% of the councilors (n = 205/439) and 33.5% of the junior members (n = 126/376). Among the respondents, 36.0% of councilors (n = 68) and 59.8% of junior members (n = 73) did not know the contents of "On the Code of Conduct for Scientists" (P < 0.01), while 76.3% of councilors (n = 145) and 61.4% of junior members (n = 75) had not heard of it (P < 0.05). However, a majority of the respondents reported interest in the Code [70.0% of councilors (n = 133), 68.6% of junior members (n = 83)] (P < 0.05) and a favorable attitude towards research ethics education [69.3% of councilors (n = 133), 68.9% of junior members (n = 84)] (P < 0.54). In addition, 24.3% of the responding councilors (n = 46) and 15.7% of the responding junior members (n = 19) believe it necessary for JSH to formulate its own code of conduct for scientists (P < 0.01).
We clarified the current state of awareness of the OCCS among JSH members as well as the opinion of members for the JSH to have its own Code of Conduct for Scientists. This result provides important information that should be considered during the formulation of an individual code of conduct for scientists in the JSH.
Environmental Health and Preventive Medicine 09/2010; 16(3):178-84.
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ABSTRACT: We investigated the association between serum levels of IGF-I, IGF-II, and IGFBP-3 and the subsequent risk of cancer mortality.
Our case-control study examined samples from 914 cancer deaths and their 2739 matched controls within the Japan Collaborative Cohort Study. Blood samples were obtained at the baseline and stored at -80 degrees C until analysis for IGF-I, IGF-II, and IGFBP-3 levels. The conditional logistic model was used to estimate odds ratios (ORs) for cancer mortality associated with these serum levels.
The adjusted ORs for IGF-I quartiles ranged from 0.81 to 0.96 but were not significant. The adjusted ORs and 95% confidence interval (CI) for the second, third, and fourth IGF-II quartiles were 0.64 (95% CI: 0.52-0.79), 0.71 (95% CI: 0.58-0.88), and 0.73 (95% CI: 0.59-0.91), respectively, while those for the respective IGFBP-3 quartiles were 0.77 (95% CI: 0.63-0.96), 0.75 (95% CI: 0.60-0.94), and 0.71 (95% CI: 0.56-0.90). In the model of IGF-I, and IGF-II additionally adjusted for IGFBP-3, the associations of high IGFs levels were similar as observed in the above models, while the association of IGFBP-3 shifted into non-significance after adjusting for IGF-II.
An increased level of IGF-II was significantly associated with decreased risk of cancer mortality, whereas the association between IGF-I and all cancer mortality was not significant. The inverse association of IGFBP-3 level with all cancer mortality was affected when adjusting for IGF-II levels, shifting from significant to non-significant. Confirmation of these results from further cohort studies may aid in identifying the potential association between these molecules and the risk of cancer among the general Japanese population.
Cancer epidemiology. 06/2010; 34(3):279-84.
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ABSTRACT: Metabolic risk factors are known to cause atherosclerosis through inflammation. In the process of inflammation, soluble Fas (sFas) may interfere with the apoptotic pathway and contribute to dysregulated inflammation. Recent studies suggest sFas as a marker of inflammation in patients with cardiovascular diseases. However, whether a relationship exists between sFas levels and metabolic risk factors among healthy subjects remains unclear.
We measured the serum sFas levels of 876 subjects selected as controls for a nested case-control study within the JACC Study. The adjusted means of the sFas levels were compared according to the presence of overweight/obesity, hypertension, hyperlipidaemia, diabetes and their clusters.
sFas level was significantly associated with overweight/obesity (2.42 ng mL(-1) in overweight/obese men and 2.19 in others) and hyperlipidaemia (2.34 ng mL(-1) in men with hyperlipidaemia and 2.19 in others) among men, though not with hypertension or diabetes. Moreover, a clear association between sFas levels and the cluster number of metabolic risk factors was observed independently with age, smoking and drinking(2.39, 2.28, 2.24 and 2.11 ng dL(-1) in men with three to four, two, one and none of the four metabolic risk factors respectively). However, among women, clear associations were not observed between sFas levels and the four metabolic risk factors or their clustering.
Serum sFas levels appear to be associated with overweight/obesity, hyperlipidaemia and clusters of metabolic risk factors among men, suggesting that sFas may elevate to down-regulate increased apoptosis in atherogenesis processes.
European Journal of Clinical Investigation 06/2010; 40(6):527-33. · 3.02 Impact Factor
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ABSTRACT: The aim of this study was to clarify the attitudes towards the code of conduct for scientists among council members of the Japanese Society for Hygiene (JSH). We also aimed to collect information to be used as baseline data for future studies.
From November to December 2007, 439 Council members of the Japanese Society for Hygiene completed a self-administered questionnaire.
The valid response rate was 43.7% (n=192/439). The mean ages of the subjects were 56.2 years for males (n=171), and 53.0 years for females (n=19). Many council members were unfamiliar with the "Code of Conduct for Scientists" established by the Science Council of Japan, suggesting that most of the regular members were also unfamiliar with these guidelines. However, the high level of interest in the "Code of Conduct for Scientists" established by the Science Council of Japan indicated a positive attitude towards learning about research ethics. Moreover, one-half of the subjects responded that JSH should establish a code of conduct for scientists. Below are some of the reasons for requiring JSH to establish a code of conduct: 1. Private information is prevalent in the field of hygiene. 2. The overall stance as an academic society would be established and would encourage individuality in academic societies. 3. Members have various backgrounds within the field of hygiene, and they should have a code of conduct different from that of their institution of affiliation.
We clarified attitudes towards the Code of Conduct for Scientists among council members of the Japanese Society for Hygiene.
Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene) 01/2010; 65(1):60-74.
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ABSTRACT: Superoxide dismutase (SOD) is an antioxidant enzyme that acts to degrade superoxide, a major causitive factor for oxidative stress associated with cancer, cardiovascular disease, and various other ailments. Here, to assess an association between antioxidants and lifestyle factors related to cancer risk, we analyzed serum SOD activity among the subjects within a large-scale cohort study in Japan. As results, significant differences in serum SOD activity were found between the sexes (lower in males), among female age groups (lower in younger individuals), and in males with the BMI (lower in those with a high BMI). Linear increase in serum SOD activity with aging and decrease with BMI were observed in females. Significantly low SOD activity was evident in male heavy smokers. In contrast, elevation was noted in female frequent drinkers. In conclusion, our findings do suggest associations between serum SOD activity and lifestyle factors. However, for further study, establishment of a standard measurement method for SOD activity should be a high priority.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:37-40. · 0.66 Impact Factor
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ABSTRACT: Recent studies have linked elevated serum sFas levels to atherosclerotic disease among patients. Confirming an association between obesity and serum sFas levels in healthy subjects would facilitate our understanding of obesity and its related disorders. We therefore analyzed serum sFas levels of 8,541 subjects selected as controls for a nested case-control study within the JACC Study. Body mass index (BMI) was calculated as the indicator of obesity based on self-reported height and weight. We found a statistically significant positive association between serum sFas levels and BMI among our apparently healthy subjects. Our result suggests that serum sFas rises to down-regulate increased apoptosis in atherogenesis processes caused by obesity.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:41-4. · 0.66 Impact Factor
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Sadao Suzuki,
Masayo Kojima,
Shinkan Tokudome,
Koji Suzuki,
Kotaro Ozasa,
Yoshinori Ito, Yutaka Inaba,
Kazuo Tajima,
Kei Nakachi,
Yoshiyuki Watanabe,
Akiko Tamakoshi
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ABSTRACT: Insulin-like growth factor (IGF)-I and IGF-II are important mitogen and IGF binding protein-3 (IGFBP-3) exerts opposite effects. However, the results of epidemiological studies on cancer influence are somewhat controversial, and mainly from Western countries. In the present study, we therefore examined associations of serum IGF-I, IGF-II and IGFBP-3 with colorectal cancer risk among participants in the JACC Study in Japan. After matching 3 controls to cases by sex, age, and study area, a total 101 risk sets were examined using a conditional logistic regression model adjusted for body mass index, smoking habit, alcohol consumption and family history of colorectal cancer. The odds ratios (and 95% CIs) for colorectal cancer mortality among the highest tertiles of IGF-I, IGF-II, and IGFBP-3, compared to the lowest tertiles were 1.01 (0.49-2.10), 1.02 (0.55- 1.91), and 1.22 (0.63-2.38), respectively. No linear trends were observed. The lack of any association was not altered after additional adjustment for mutual markers of IGF-I/IGF-II or IGFBP-3, 0.76 (0.34-1.71) for IGF-I, 0.66 (0.30-1.45) for IGF-II, and 1.11 (0.47-2.66) for IGFBP-3. Our prospective data thus indicated that there is no association of IGF-I, IGF-II, and IGFBP-3 with colorectal cancer risk in the Japanese population. Although these markers might be etiologically significant in relation to colorectal cancer, we did not obtain evidence supporting this hypothesis.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:45-9. · 0.66 Impact Factor
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Fumio Sakauchi,
Masanori Nojima,
Mitsuru Mori,
Kenji Wakai,
Sadao Suzuki,
Akiko Tamakoshi,
Yoshinori Ito,
Yoshiyuki Watanabe, Yutaka Inaba,
Kazuo Tajima,
Kei Nakachi
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ABSTRACT: The Japan Collaborative Cohort Study for Evaluation of Cancer Risk (JACC Study) was planned in the late 1980s as a large-scale cohort study of persons in various areas of Japan. In the present study, we conducted a nested case-control study and examined associations of breast cancer risk with serum levels of insulin-like growth factors I and II (IGF-I, IGF-II), as well as insulin-like growth factor binding protein-3 (IGFBP-3), among women who participated in the JACC Study and donated blood at the baseline. Sixty-three women who died or suffered from breast cancer were examined. Two or three controls were selected to match each case for age at recruitment and the study area. Controls were alive and not diagnosed as having breast cancer at the diagnosis date of the cases. Associations between the serum IGF-I, IGF-II, IGFBP-3 and breast cancer risk were evaluated using a conditional logistic regression model. In premenopausal Japanese women, IGF-I showed a marginal negative dose-dependent association with the breast cancer risk (trend P= 0.08), but any link disappeared on taking into account IGFBP-3 (trend P= 0.47), which was likely to be inversely associated with the risk. In postmenopausal women, IGFBP-3 showed a marginal dose-dependent association with the risk (trend P= 0.06). Further studies are needed to confirm these findings.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:51-5. · 0.66 Impact Factor
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ABSTRACT: In this paper, we describe the methodology of the case and control selection for the first-wave nested case-control study within the JACC Study. Among the subjects participating in the cohort, serum samples of 42,249 subjects (including 39,242 subjects aged between 40 and 79 at the baseline) were suitable for biochemical analysis. We here selected those who had died by 1997 or who were diagnosed with cancer with sera until 1994 as cases. For each case, 3 to 4 controls with sera were randomly selected, with matching for gender, age (as near as possible) and residential area. As a result, 3,144 cases and 10,661 controls (2,867 cases and 10,351 controls were 40 to 79 years old at the baseline) were selected to measure serum IGF-I, IGF-II, IGFBP-3, TGF-b1 and sFas values and total SOD activity. Cases were older and more likely to be men than the JACC Study subjects. Moreover, they were much older than controls because of the age-dependence of susceptibility to death, especially among men. There were more smokers among cases compared with controls, though drinkers at the baseline were fewer. Among deceased cases, cancer was the leading cause of death, followed by cardiovascular diseases. Lung cancer was most frequent among deceased cancer cases and the next most common site was the stomach. The leading cause of cancer incidence was stomach cancer followed by lung cancer. Simple comparison of means and distribution of IGF-I, IGF-II, IGFBP-3, TGF-b1, sFas and total SOD activity between cases and controls revealed total SOD activity and sFas levels of cases to be higher than controls, while for the other components the opposite was found.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:1-5. · 0.66 Impact Factor
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Kiyoko Yagyu,
Shogo Kikuchi,
Yingsong Lin,
Teruo Ishibashi,
Yuki Obata,
Michiko Kurosawa,
Yoshinori Ito,
Yoshiyuki Watanabe, Yutaka Inaba,
Kazuo Tajima,
Kei Nakachi,
Akiko Tamakoshi
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ABSTRACT: Biliary tract cancer, encompassing gallbladder and bile duct cancers, has a poor prognosis, but little is known of the etiology. A nested case-control study was here conducted to evaluate the association between serum levels of IGF-I, IGF-II and IGFBP-3 and death from biliary tract cancer. In a large scale cohort study, 35 gallbladder and 42 bile duct cancers were observed during the follow-up. For each subject in the case group, 1-3 control subjects (228 in total) were selected randomly, matched for sex, age (as near as possible) and residential area. The subjects were divided into tertiles by circulating levels of IGF-I, IGF-II or IGFBP-3. Using conditional logistic regression, risks among the tertiles were compared adjusted for defecation, smoking and drinking habits. No remarkable differences in risks of gallbladder or bile duct cancer were observed among tertiles of IGF-I or IGF-II, and no remarkable trend was observed. Circulating IGFBP-3 showed an inverse U-shape association with gallbladder cancer and a U-shaped one with bile duct cancer. Associations between IGF-I or IGF-II and gallbladder or bile duct cancer thus were lacking or very weak. The observed U- and inverse U-shaped association of IGFBP-3 with the cancers is not suggestive of any meaningful relationships.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:63-7. · 0.66 Impact Factor
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ABSTRACT: No observational study has examined whether cancer-related biomarkers are associated with diet in Japanese. We therefore assessed sex-specific food and nutrient intakes according to serum IGF-I, IGF-II, IGFBP-3, TGF-b1, total SOD activity and sFas levels, under a cross-sectional study of 10,350 control subjects who answered the food frequency questionnaire in the first-wave nested case-control study within the Japan Collaborative Cohort Study. For both men and women, IGF-I levels were associated with higher intakes of milk, fruits, green tea, calcium and vitamin C. IGF-II levels were associated with higher intakes of milk, yogurt, fruits and miso soup, and lower intakes of rice, coffee and carbohydrate. IGFBP-3 levels were associated with higher intakes of milk, yogurt, fruits and vitamin C, and lower intakes of rice, energy, protein, carbohydrate, sodium and polyunsaturated fatty acids. TGF-b1 levels were associated with lower intakes of coffee intakes, and higher intakes of miso soup and sodium. Total SOD activity levels were associated with lower intakes of most nutrients other than energy, carbohydrate, iron, copper, manganese, retinol equivalents, vitamin A, B2, B12, niacin, folic acid, vitamin C and fish fat. sFas levels were associated with higher intakes of manganese and folic acids. The results of the present study should help to account for findings on those biomarkers regarding risks of cancer and other lifestyle-related diseases in terms of dietary confounding as causality.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:7-22. · 0.66 Impact Factor
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Yingsong Lin,
Shogo Kikuchi,
Kiyoko Yagyu,
Teruo Ishibashi,
Michiko Kurosawa,
Yoshinori Ito,
Yoshiyuki Watanabe, Yutaka Inaba,
Kazuo Tajima,
Kei Nakachi,
Akiko Tamakoshi
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ABSTRACT: In a search for novel circulating biomarkers for pancreatic cancer, we examined the association between serum soluble Fas (sFas) levels and superoxide dismutase (SOD) activity and the risk of death from pancreatic cancer in a nested case-control study within the Japanese Collaborative Cohort Study. Case subjects were 68 persons who were free of morbidity, had provided a blood sample at baseline (1988-1990), and subsequently died from pancreatic cancer before December 31, 1997. Control subjects were 199 matched persons who were selected from the remaining participants in the cohort. Conditional logistic regression models were used to estimate age-adjusted and multivariate-adjusted odds ratios (ORs) and their 95% confidence intervals (CIs). No statistically significant differences were noted in mean sFas levels (p=0.11) and SOD activity (p=0.42) between cases and controls. Overall, neither serum sFas levels nor SOD activity were associated with the risk of pancreatic cancer deaths, after adjustment for area, BMI, cigarette smoking, and history of diabetes. Furthermore, no significant risk trends were noted. Our results do not support the hypothesis that serum sFas levels and SOD activity are associated with pancreatic cancer risk.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:81-5. · 0.66 Impact Factor
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ABSTRACT: Superoxide dismutases (SODs) are antioxidant enzymes that play a role in the defense system of the body. They may be involved in protection against carcinogenesis processes. In the present study, we investigate the association between serum SOD activity and the risk of deaths due to all cancers combined, based on a nested case-control study within the Japan Collaborative Cohort Study of 914 cancer deaths and 2,739 matched controls. Blood samples were obtained at the baseline and stored at -80 degrees C until analysis for SOD levels. Serum levels of SODs were divided into quartiles, with the first quartile used as the reference. A conditional logistic model was used to estimate odds ratios (ORs) for total cancer mortality associated with serum SOD quartile levels. The adjusted ORs and 95% confidence intervals (CIs) for the second, third and fourth SOD quartiles were 0.96 (95%CI: 0.77-1.19), 1.18 (0.92-1.51), and 1.32 (1.04-1.69), respectively. In analyses stratified by observation period, the adjusted ORs of the respective quartiles were 0.81 (95%CI: 0.60-1.08), 0.98 (0.70-1.37), and 1.28 (0.92-1.79) for the period from the baseline to 1994; and the adjusted ORs were 1.18 (95%CI: 0.85-1.63), 1.47 (1.04-2.10), and 1.41 (1.00-2.04) for the period after 1994. To conclude, we found a slightly positive association between serum SOD level and the risk of all cancer mortality in the present study. Elevated serum SOD levels might reflect a response to oxidative stress, and then may predict a state of excess reactive oxygen species in the carcinogenesis process. Detailed studies of associations between serum SOD levels and cancers in specific sites should now be performed, with attention to particular tumour types.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:69-73. · 0.66 Impact Factor
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Truong-Minh Pham,
Yoshihisa Fujino,
Masahiko Ando,
Koji Suzuki,
Kei Nakachi,
Yoshinori Ito,
Yoshiyuki Watanabe, Yutaka Inaba,
Kazuo Tajima,
Akiko Tamakoshi,
Takesumi Yoshimura
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ABSTRACT: The expression of superoxide dismutases (SODs) has been shown to differ between lung tumor and tumor-free tissues. In the present study, we investigated the association between serum SOD activity and the risk of lung cancer mortality, based on a nested case-control design study within the Japan Collaborative Cohort Study, with a sample of 193 lung cancer patients and 573 matched controls. Blood samples were obtained at the baseline and stored at -80 degrees C until analysis for SOD levels. Serum levels of SODs were divided into quartiles, with the first quartile used as the reference. A conditional logistic model was used to estimate odds ratios (ORs) for lung cancer mortality associated with serum SOD quartile levels. The adjusted ORs and 95% CIs for the second, third; and fourth SOD quartiles were 0.80 (95%CI: 0.49-1.29), 1.32 (0.78-2.25), and 1.07 (0.60-1.89), respectively. In analyses stratified by observation period, the adjusted ORs of the respective quartiles were 0.56 (95%CI: 0.30-1.07), 1.16 ( 0.57-2.37), and 1.11 (0.52-2.35) for the period from the baseline to 1994; and the adjusted ORs of 1.36 (95%CI: 0.65-2.85), 1.71 (0.75-3.87), and 1.06 (0.44-2.53) for the period after 1994. To conclude, we found no significant association between serum SOD level and the risk of deaths from lung cancer in the present study.
Asian Pacific journal of cancer prevention: APJCP 12/2009; 10 Suppl:75-9. · 0.66 Impact Factor
