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- Augustsson, Katarina, et al.
(författare)
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A population-based dietary inventory of cooked meat and assessment of the daily intake of food mutagens
- 1999
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Ingår i: Food Additives and Contaminants. - : Informa UK Limited. - 0265-203X .- 1464-5122. ; 16:5, s. 215-225
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Tidskriftsartikel (refereegranskat)abstract
- Frequent consumption of meat has been associated with an increased risk of colorectal cancer. Such a risk may be due to naturally occurring compounds in the meat, substances added to the meat, or agents formed during cooking. Concerning the latter alternative, mutagenic heterocyclic amines are multi-site animal carcinogens, but their relevance to human cancer has yet to be determined. In the present study, we made a population-based inventory of cooked meat dishes consumed in the county of Stockholm, ranked dishes according to cooking method and frequency of consumption and, in addition, determined levels of mutagenic activity in six commonly consumed fried meat dishes. Meat was consumed, on average, 493 times per year, giving 1.4 daily servings. Frying was the most common way to cook meat. When ranking meat dishes according to intake frequency, the top eight dishes were as follows. sausage, steak casserole, meatballs, pork chops, pork belly, bacon, ground beef patties, and, finally, mincemeat sauce. The frying sessions were pel;formed under controlled conditions at four different temperatures, and we documented the degree of surface browning and measured mutagenic activity in six frequently eaten dishes (sausage, meatballs, pork chops, pork belly, ground beef patties, and minute beef). We found extracts from all six dishes to be mutagenic, and a mean daily dose of exposure was calculated, giving 862 revertants. This investigation leaves no doubt that a major portion of the total meat consumption is fried before ingestion and that fried meat dishes frequently consumed by an elderly population in Stockholm contain mutagenic substances. Furthermore, the study provides usable information for future epidemiological research in which it is necessary to disentangle the effect of meat per se from the effect of potentially carcinogenic heterocyclic amines.
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- Augustsson, Katarina, et al.
(författare)
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Assessment of the human exposure to heterocyclic amines
- 1997
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Ingår i: Carcinogenesis. - : Oxford University Press (OUP). - 0143-3334 .- 1460-2180. ; 18:10, s. 1931-1935
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Tidskriftsartikel (refereegranskat)abstract
- Heterocyclic amines are possible human carcinogens and fried meat is an important source of exposure in the Western diet, To study the effect of heterocyclic amines in humans, accurate assessment of individual food consumption is essential, Parameters influencing the intake include the amount and type of meat ingested, frequency of consumption, cooking method, cooking temperature and the duration of cooking, The aim of the present study was to develop a practical method for assessing individual intakes of specific heterocyclic amines in a large sample of people, This has been done by combining information on food consumption and laboratory findings of heterocyclic amines in food products, Diet was assessed using a semi-quantitative food frequency questionnaire including photos of fried meat and, in all, 22 dishes were cooked and chemically analyzed. The method was employed in an elderly population in Stockholm to estimate the daily mean intake of the five heterocyclic amines 2-amino-3-methylimidazo[4,5-f]quinoline (IQ), 2-amino-3,4-dimethylimidazo [4,5-f]quinoline (MeIQ), 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), 2-amino-3,4,8-trimethylimidazo [4,5-f]quinoxaline (DiMeIQx) and 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), The total daily intake ranged from none to 1816 ng, with a mean intake of 160 ng, which is well below estimates reported previously, Highest amounts ingested were of PhIP (mean 72, range 0-865 ng/day) and MeIQx (mean 72, range 0-1388 ng/day), followed by DiMeIQx (mean 16, range 0-171 ng/day), while MeIQ and IQ were ingested only in very small amounts (mean <1 ng/day).
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| 8. |
- Augustsson, Katarina, et al.
(författare)
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Dietary heterocyclic amines and cancer of the colon, rectum, bladder, and kidney : a population-based study
- 1999
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Ingår i: The Lancet. - 0140-6736 .- 1474-547X. ; 353:9154, s. 703-707
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Tidskriftsartikel (refereegranskat)abstract
- Background Heterocyclic amines formed in cooked meat and fish are carcinogenic in animal models and form DNA adducts in human beings. We undertook a study to assess whether these substances are related to the risks of cancer in the large bowel and urinary tract. Methods In a population-based case-control study, cases were identified from the Swedish cancer registry. Controls were randomly selected from the population register. Information on intake of various foods and was assessed by questionnaire, with photographs of foods cooked at various temperatures. We measured the content of heterocyclic amines in foods cooked under these conditions. Findings Information was retrieved from 553 controls, 352 cases of colon cancer, 249 cases of rectal cancer, 273 cases of bladder cancer, and 138 cases of kidney cancer. The response rate was 80% for controls and 70% for cases. The estimated daily median intake of heterocyclic amines was 77 ng for controls, and 66 ng, 63 ng, 96 ng, and 84 ng for cases with cancer of the colon, rectum, bladder, and kidney, respectively. The relative risk for the intake of heterocyclic amines (highest vs lowest quintile) was 0.6 (95% CI 0.4-1.0) for colon cancer, 0.7 (0.4-1.1) for rectal cancer, 1.2 (0.7-2.1) for bladder cancer, and 1.0 (0.5-1.9) for kidney cancer. Seven cases, but no controls, had an estimated daily intake of heterocyclic amines above 1900 ng. Interpretation Intake of heterocyclic amines, within the usual dietary range in this study population, is unlikely to increase the incidence of cancer in the colon, rectum, bladder, or kidney. For daily intakes above 1900 ng, our data are consistent with human carcinogenicity, but the precision was extremely low.
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- Börjeson, Sussanne, 1962-, et al.
(författare)
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Similarities and differences in assessing nausea on a verbal category scale and a visual analogue scale.
- 1997
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Ingår i: Cancer Nursing. - : Ovid Technologies (Wolters Kluwer Health). - 0162-220X .- 1538-9804. ; 20:4, s. 260-266
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Tidskriftsartikel (refereegranskat)abstract
- The use of verbal category scales in assessing patient symptoms is evolving, but the extent to which reliability and precision are lost in using them as opposed to a visual analogue scale (VAS) remains uncertain. The present study analyzed the concordance between a four-point verbal category scale and a VAS in assessing nausea intensity in patients undergoing chemotherapy. The analysis of a total of 348 simultaneous ratings by 104 women over four cycles revealed good concordance between the scales. The means of the VAS ratings (range 0-100 mm) corresponding to the four verbal categories divided the scale in four almost equally large parts (no nausea = 0.7, mild = 24.8, moderate = 48.3, severe = 75.1). However, the VAS ranges were wide. On an individual level a one-step change in the verbal category was associated with an average change of 20 mm on the VAS. The choice of scale to use should be based on the need in the particular situation. When measuring intensity of nausea in patients, the VAS is a reasonable choice due to its possibly greater ability to detect changes over time. On the group level, findings on a four-point category scale and a VAS on the average seem similar.
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- Helgason, AR, et al.
(författare)
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Decreased sexual capacity after external radiation-therapy for prostate-cancer impairs quality-of-life
- 1995
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Ingår i: INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0360-3016. ; 32:1, s. 33-39
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: The aim of this study was to assess to what extent patients treated with radiation therapy for prostate cancer experience change in sexual functioning and to what extent this effects quality of life. Methods and Materials: Information was provid
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- Helgason, AR, et al.
(författare)
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Factors associated with waning sexual function among elderly men and prostate cancer patients
- 1997
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Ingår i: JOURNAL OF UROLOGY. - : WILLIAMS & WILKINS. - 0022-5347. ; 158:1, s. 155-159
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: We identified factors that affect sexual function in men 50 to 80 years old and, therefore, may confound the comparison among groups of elderly men. In particular, we identified factors that may influence a comparison between prostate cancer pat
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- Helgason, AR, et al.
(författare)
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Introverts give up smoking more often than extroverts
- 1995
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Ingår i: PERSONALITY AND INDIVIDUAL DIFFERENCES. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0191-8869. ; 18:4, s. 559-560
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Tidskriftsartikel (refereegranskat)abstract
- It has been reported that smoking is more prevalent among extraverts than introverts. Findings of the present study, including 51 prostate cancer patients, support this but indicates that extraverts may not be more likely to start to smoke. However, intr
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