laxative



References: Laxative







Cancer Detect Prev. 1998;22(5):396-404.
Epidemiology of sociodemographic characteristics, lifestyle, medical history, and colon cancer: a case-control study among French Canadians in Montreal.

Ghadirian P, Maisonneuve P, Perret C, Lacroix A, Boyle P.

Research Center, CHUM, Department of Nutrition, University of Montreal, Quebec, Canada.

Colon cancer is the second most common cancer in both men and women in North America and other developed countries. In a population-based case-control study of colon cancer among French Canadians in greater Montreal, a total of 402 cases and 668 controls were interviewed. The cancer cases were identified through the admission offices of five major Francophone teaching hospitals in Montreal from 1989 to 1993. The controls, matched by age, sex, place of residence, and language, were selected by a modified random digit dialing method. The results show that subjects who had ever been married had a lower risk for colon cancer (odds ratio [OR]: 0.58; 95% confidence interval [95% CI]: 0.48-0.84) than did individuals who had never been married. A significant association (OR: 1.90; p for trend = 0.003) was found between the height of subjects and the risk of colon cancer. The OR for individuals with a family history of colorectal cancer was 2.78 with a p value of 0.01. A direct and significant association (OR: 2.01) was found among constipation, use of laxatives (OR: 1.41), and the risk of colon cancer. Among women, a suggestive inverse association was detected between the number of full-term pregnancies and the risk of colon cancer in female subjects (the OR for five or more pregnancies was 0.58 with a p for trend of 0.08). There was also a suggestive linear trend (increased age-decreased risk) between age at menarche and the risk of colon cancer. No association was apparent between other sociodemographic characteristics and the risk of colon cancer. In conclusion, married individuals had lower risk for colon cancer, perhaps due to food habits or other characteristi



Pharmacol Toxicol. 1988 Jul;63(1):37-41.
The effect of different storage conditions on the chemical stability, laxative effect and acute toxicity of sennoside solutions.

Lainonen H, Marvola M, Hietala P, Parviainen T.

Extracta Ltd., Helsinki, Finland.

This paper investigates the effect of different storage conditions on the chemical stability, laxative effect and acute toxicity of sennoside solutions. The variables in storage conditions were pH, time and temperature (room temperature or 100 degrees). The chemical stability of sennosides in aqueous solutions was found to be pH-dependent, with the best stability at pH 6.5 (t90. = 8.4 months) and the poorest at pH 8.0 (t90. = 2.5 months). Two years of storage at room temperature did not reduce the laxative potency in mice, regardless of the pH. After 4.25 years of storage the potency declined in alkaline solutions only. The degradation products with laxative potencies are chemically unknown. The acute toxicity of sennoside solutions increased with time during storage, the acid solution being more toxic than either the neutral or alkaline ones.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=3399476&dopt=Abstract constipation laxative



Lancet. 1995 Nov 11;346(8985):1247-51.
Fibrosing colonopathy in cystic fibrosis: results of a case-control study.

Smyth RL, Ashby D, O'Hea U, Burrows E, Lewis P, van Velzen D, Dodge JA.

Respiratory Unit, Royal Liverpool Children's Hospital, Alder Hey, UK.

Fibrosing colonopathy was first described in cystic fibrosis (CF) children in 1994. We have done a nested case-control study to identify possible associations with this condition. A case ascertainment within the UK CF population to identify any cases that occurred between January, 1984, and April, 1994, found 14 cases, all under 14 years and confirmed by independent histopathological review. All had presented since April, 1993; 12 were boys and six had received some or all of their care in Liverpool. Each case was matched, by date of birth, with four controls from the UK CF Registry. Information was obtained about cases and controls from their case records and by a structured interview with the families. In the 12 months before surgery, there was an association between the occurrence of fibrosing colonopathy and use of high-strength pancreatic enzyme preparations. This association was dose related. Odds ratio per extra 1000 high-strength capsules was 1.45 (95% CI 1.14-1.84). For use of protease, the odds ratio per million extra units per kg was 1.55 (1.19-2.03). For usage of individual high-strength products at any time during the 12 months before surgery some differences were observed; for Creon 25000 the odds ratio was 0.38 (0.10-1.42), for Nutrizym 22 43.4 (2.51-751), and for Pancrease HL 8.4 (1.95-36.1). These last two confidence intervals are extremely wide and compatible with these two products having the same odds ratios. Laxative use was independently predictive (odds ratio 2.42 [1.20-4.94]). We conclude that there is a dose-related association between high-strength pancreatic enzyme preparations and fibrosing colonopathy.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7475715&dopt=Abstract constipation laxative



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