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  • 1
    ISSN: 1546-1718
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Medizin
    Notizen: [Auszug] Ulcerative colitis, a chronic inflammatory disease of the colon, is associated with a high risk of colorectal carcinoma that is thought to develop through genomic instability. We considered that the rapid cell turnover and oxidative injury observed in ulcerative colitis might accelerate telomere ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    ISSN: 1573-7225
    Schlagwort(e): Colon cancer ; hormone replacement therapy ; reproductive history ; risk factors ; United States ; women
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Hormonal factors have been inconsistently associated with coloncancer risk in women. The associations between reproductive events, menstrualfactors, exogenous hormones, and colon cancer were evaluated in a largecase-control study (894 female cases and 1,120 female age-matchedpopulation-based controls) in the United States, stratifying by age atdiagnosis, tumor site, family history and other potential risk factors.Overall, higher parity was associated with a marginally decreased risk ofcolon cancer (five or more births compared with nulliparous: odds ratio [OR]= 0.75, 95 percent confidence interval [CI] = 0.53-1.06) after adjusting forage at diagnosis, family history of colorectal cancer, vigorous lifetimephysical activity, body mass index (BMI) (wt/ht 1.5 ), total energy intake,and aspirin use. No important associations were observed for otherreproductive or menstrual events. An inverse association between recent useof hormone replacement therapy (HRT) and colon cancer was observed (OR = 0.71, CI = 0.56-0.89). Although interaction termswere not significant, this inverse association appeared to be more pronouncedfor those with an older age at diagnosis; for those without a first-degreerelative with colorectal cancer; and for those with a relatively low BMI. Thereduced risk associated with HRT use did not appear to be explained by otherbehaviors related to HRT use.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    ISSN: 1573-7225
    Schlagwort(e): Anthropometry ; colonic neoplasms ; dietary fats ; females ; lifestyle ; meat ; prospective studies ; reproduction ; sucrose ; United States
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract To investigate the relation of dietary intakes of sucrose, meat, and fat, and anthropometric, lifestyle, hormonal, and reproductive factors to colon cancer incidence, data were analyzed from a prospective cohort study of 35,215 Iowa (United States) women, aged 55–69 years and without a history of cancer, who completed mailed dietary and other questionnaires in 1986. Through 1990, 212 incident cases of colon cancer were documented. Proportional hazards regression was used to adjust for age and other risk factors. Risk factors found to be associated significantly with colon cancer included: (i) sucrose-containing foods and beverages other than ice cream/milk; relative risks (RR) across the quintiles=1.00, 1.73, 1.56, 1.54, and 2.00 (95% confidence intervals [CI] for quintiles two and five exclude 1.0); (ii) sucrose; RR across the quintiles=1.00, 1.70, 1.81, 1.82, and 1.45 (CI for quintiles two through four exclude 1.0); (iii) height; RR=1.23 for highest to lowest quintile (P for trend-0.02); (iv) body mass index; RR=1.41 for highest to lowest quintile (P for trend=0.03); and (v) number of livebirths, RR=1.59 for having had one to two livebirths and 1.80 for having had three or more livebirths compared with having had none (P for trend=0.04). These data support hypotheses that sucrose intake or being tall or obese increases colon cancer risk; run contrary to the hypothesis that increased parity decreases risk; support previous findings of no association with demographic factors other than age, cigarette smoking, or use of oral contraceptives or estrogen replacement therapy; and raise questions regarding previous associations with meat, fat, protein, and physical activity.Cancer Causes and Control 1994, 5, 38–52.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    ISSN: 1573-7225
    Schlagwort(e): allergy ; leukemia ; sibling
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objectives: To test the hypothesis that childhood acute lymphoblastic leukemia (ALL) is associated with allergic disorders. Methods: We compared the histories of selected allergic disorders (asthma, hay fever, food or drug allergies, eczema, and hives) of 1842 cases of ALL with those of 1986 individually matched controls. The histories of the allergic disorders among siblings of cases and controls were also compared. Results: The combined history of any one or more of the five allergic disorders evaluated was associated with a significant reduced risk of ALL (adjusted OR = 0.7, 95% CI 0.6–0.8), as were hhistories of four specific allergic disorders (asthma, hay fever, food or drug allergies, and eczema). The combined history of any one or more of the five allergic disorders among any of the siblings of the study subjects also revealed a significantly inverse association (adjusted OR = 0.9, 95% CI 0.8–1.0). Conclusion: The results from this study, in agreement with most previous studies on adult cancer, suggest that allergic disorders may be associated with a reduced risk of childhood ALL.
    Materialart: Digitale Medien
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  • 5
    ISSN: 1573-7225
    Schlagwort(e): Asian-Americans ; colorectal neoplasms ; incidence ; SEER program
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objectives: To examine the incidence of colorectal cancer among Asian residents of the United States according to country of birth. Methods: We determined the incidence of colorectal cancer during 1973–1986 among Asian residents in three areas of the western United States (Hawaii, San Francisco/Oakland SMSA, and western Washington state) in relation to country of birth. Numerators for the rates were obtained from the Surveillance, Epidemiology and End Results (SEER) program; a special tabulation of the 1980 US Census was used to estimate the size and composition of the population at risk. Results: US-born Japanese men experienced incidence rates of colorectal cancer twice as high as foreign-born Japanese men and about 60% higher than those of US-born white men. Incidence among US-born Japanese women was about 40% higher than that among Japanese women born in Japan or US-born white women. Foreign-born Chinese men had about the same incidence of colorectal cancer as US-born white men, while US-born Chinese men experienced slightly reduced rates. Chinese women had rates that were generally 30–40% lower than that of US-born white women, regardless of place of birth. Incidence rates for both US-born and foreign-born Filipinos were 20–50% those of US-born whites. Conclusions: These findings suggest that one or more exposures or characteristics that differ between Japanese migrants and their descendants affect the development of colorectal cancer.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    ISSN: 1573-7217
    Schlagwort(e): breast neoplasms ; breast self-exam ; estrogen receptors ; melatonin ; seasonal variations
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Of 2895 women who self-detected an incident breastcancer that required surgery, peaks in month ofdetection occurred in spring and late autumn (p = 0.012).For the subset of cases for whom receptor status was available, there was ahighly significant seasonal variation in detection only forthose with ER-negative tumors. Further investigations into seasonalityand breast cancer detection may be warranted.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Cancer causes & control 10 (1999), S. 431-437 
    ISSN: 1573-7225
    Schlagwort(e): biological markers ; menopause ; molecular epidemiology ; steroid hormones
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objectives: Substantial decline of ovarian hormones at menopause plays an important role in breast cancer etiology. Hormones must bind to specific receptors to elicit biological responses, however. We therefore hypothesized and examined whether the age-specific risk of breast cancer, especially its change at menopause, differs by estrogen and progesterone receptor (ER/PR) status. Methods: Age-specific incidence rates, stratified by ER/PR status, were estimated by multiplying the age-specific ER/PR distribution among 3359 cases in the Danish Breast Cancer Cooperative Group by Danish national age-specific incidence rates. International variations in the age–incidence curve were also reviewed in relation to the hypothesis. Results: The incidence of ER + /PR + subtype (62.9% of all cases) increased with age continually, with a sudden decrease in the rate of increase around age 44. The incidence of ER − /PR − subtype (17.6%) increased with age prior to about age 50 but remained unchanged subsequently. The incidence of ER + /PR− subtype (13.9%) increased rapidly during the menopausal period but only slightly afterwards. The incidence of ER − /PR + subtype (5.6%) increased until about age 43 and decreased subsequently. The international comparison revealed Western women, particularly the elderly, might be at substantially higher risk for ER + /PR + subtype compared to Japanese women. Conclusion: Age-specific risk of breast cancer differs by ER/PR status. The large international variation of breast cancer incidence rates may be explained largely by the risk difference for ER + /PR + subtype.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    ISSN: 1573-7225
    Schlagwort(e): colon cancer ; disease stage ; hormone replacement therapy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objectives: Hormone replacement therapy (HRT) has been inversely associated with colon cancer incidence in several epidemiologic studies. In this study we used data from a population-based incident case–control study of colon cancer to evaluate the role of HRT use in survival after diagnosis with colon cancer. Methods: Data from 815 postmenopausal women living in Utah, California, and Minnesota diagnosed between 1 September 1991 and 30 September 1994 were used to examine associations between HRT and survival. Results: After adjusting for age at time of diagnosis, stage of disease at time of diagnosis, study center, and body mass index (BMI), we observed that women who had ever used HRT had a 30% lesser probability of dying of any cause and a 40% lower probability of dying from colon cancer specifically during the follow-up period. Further evaluation by years of HRT use showed that those who had used HRT for 4 or more years had the lowest risk of dying of colon cancer (hazard rate ratio 0.5, 95% confidence interval 0.3–0.9). Evaluation of other lifestyle variables with HRT use did not show significant confounding or effect modification. Conclusions: These findings suggest that HRT use may improve short-term survival after diagnosis with colon cancer; there is no suggestion that HRT use is detrimental to survival.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    Cancer causes & control 11 (2000), S. 459-466 
    ISSN: 1573-7225
    Schlagwort(e): calcium ; colon cancer ; effect modification ; vitamin D
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objective: Epidemiologic studies on calcium, vitamin D and colon cancer are inconsistent, whereas experimental studies more regularly show a protective effect. To evaluate potential sources of inconsistencies, data from a large case–control study were analyzed, stratifying on potential effect modifiers. Methods: Data were collected by certified interviewers in Northern California, Utah and Minnesota. Analyses included 1993 incident colon cancer cases and 2410 population-based controls. Multivariate logistic regression models included age, sex, BMI, family history, physical activity, intake of energy, dietary fiber, aspirin and NSAIDs. Results: Dietary calcium was inversely associated with colon cancer risk in men (OR highest vs lowest quintile = 0.6, 95% CI = 0.5–0.9) and women (OR = 0.6, 95% CI = 0.4–0.9). No statistically significant associations were observed for dietary vitamin D or sunshine exposure. Consumption of total low-fat dairy products was associated with a statistically significantly decreased risk in men and women (ORs highest vs lowest category of intake = 0.8 and 0.7 respectively). Calcium supplement use was inversely associated with risk in both sexes (ORs use vs non-use = 0.8). Vitamin D supplements were inversely associated with risk in men (OR = 0.5) and women (OR = 0.6) but confidence limits included 1.0. Conclusions: These data provide additional support of an inverse association between high levels of calcium intake and colon cancer risk.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    Springer
    Breast cancer research and treatment 13 (1989), S. 278-278 
    ISSN: 1573-7217
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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