References: Laxative
Gerontology. 1998;44(6):324-30.
Effect of ageing on colonic endocrine cell population in mouse.
Sandstrom O, Mahdavi J, El-Salhy M.
Section for Gastroenterology and Hepatology, Department of Medicine, University Hospital, Umea, Sweden.
BACKGROUND: Dysmotility in the gastrointestinal tract increases with age. Colonic endocrine cells play an important role in regulating intestinal secretion and motility. The objective was to study possible age-related changes in the colonic endocrine cells of an animal model. METHODS: The colonic endocrine cells in four different age groups of mice were investigated by immunocytochemistry and quantified by computerized image analysis. The ages of these groups were 1, 3, 12 and 24 months old. RESULTS: The numbers of peptide YY (PYY), enteroglucagon and serotonin immunoreactive (IR) cells in 1-month-old mice were significantly increased compared with those of 3-month-old mice. Similarly, the numbers of these cells were significantly greater in 12- and 24-month-old mice than in 3-month-old mice. The cell secretory index (CSI) of enteroglucagon and serotonin IR cells was higher in 1-, 12- and 24-month-old mice than in 3-month-old mice. There was no significant difference between the different age groups regarding the CSI of PYY IR cells, nor was there any statistical difference between females and males in all endocrine cell types regarding numbers and CSI. CONCLUSION: It is suggested that the increase in colonic endocrine cells prior to puberty might reflect the role of gut hormones in the development of the gastrointestinal tract. It is speculated further that the increase in colonic endocrine cells with ageing may compensate for increased receptor resistance and/or weakened response of effector organs. It is suggested that the increase in numbers and unchanged CSI of PYY cells with advancing age may be responsible for the slow colonic transit and constipation, both of which increase with age.
Laxative online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9813431&dopt=Abstract constipation laxative colon cleansing
J Travel Med. 1995 Mar 1;2(1):11-15.
Observational Study of Travelers' Diarrhea.
Meuris B.
Medical Officer, Flying Staff, Sabena.
Background: European air travelers returning from Algeria, Egypt, Mexico, Morocco, and Tunisia were interviewed about their experience of travelers' diseases upon arrival in Brussels. Diarrhea was mentioned by 37% of the adults and 27% of the children. These subjects were questioned about the types of measures taken, type and duration of drug treatment (if any), and about duration of diarrhea and side effects experienced. Methods: Final analysis was performed based on 2160 interviews. The largest proportion of diarrhea was reported in the age group 15-24 years (46%). Results: The majority of the 2160 subjects had opted for drug treatment (81%): 927 subjects for loperamide alone, 235 for loperamide in combination with nifuroxazide, and 178 for nifuroxazide alone. Other drugs had been used less frequently. The median time to recovery was 2.4 days with loperamide compared to 3.2 days with nifuroxazide and to 3.4 days for the no-treatment group. Conclusions: A stratification of the results by severity of the diarrhea suggests a rank of antidiarrheal potency as follows: loperamide > nifuroxazide > no-drug treatment. The side effect with the highest incidence was constipation (2.4% with loperamide). (J Travel Med 2:11-15, 1995) Travelers' diarrhea is usually defined as the passage of at least three unformed stools per day or any number of such stools when accompanied by fever, abdominal cramping, or vomiting. The definition may be broadened to include more trivial bowel disturbance.1,2 The duration of this self-limited disease generally is 3 to 5 days. Medical intervention aims at shortening the duration of disease, thus allowing the sufferer to resume his or her usual activities at an early stage. A shortened period of recovery to physical well-being has obvious favorable economic implications if the traveler is on business and may help the maintenance of a d
Dis Colon Rectum. 1998 Nov;41(11):1363-6.
Should patients with combined colonic inertia and nonrelaxing pelvic floor undergo subtotal colectomy?
Bernini A, Madoff RD, Lowry AC, Spencer MP, Gemlo BT, Jensen LL, Wong WD.
Division of Colon and Rectal Surgery, University of Minnesota Medical School, Minneapolis, USA.
PURPOSE: Treatment of severe constipation caused by combined colonic inertia and nonrelaxing pelvic floor is controversial. This study is designed to evaluate the outcome of preoperative biofeedback and subtotal colectomy for patients with combined colonic inertia and nonrelaxing pelvic floor. METHODS: One hundred six patients who underwent subtotal colectomy for intractable constipation from 1982 through 1995 answered a detailed questionnaire regarding postoperative bowel function, symptoms of abdominal pain and bloating, and degree of satisfaction after the operation. Sixteen of these patients had a combination of colonic inertia and nonrelaxing pelvic floor diagnosed by transit marker study, electromyography, and defecography. These patients completed preoperative biofeedback training. RESULTS: Electromyographic relaxation of pelvic floor musculature was demonstrated after the biofeedback treatment in all patients, but symptoms of difficult evacuation persisted. Postoperatively, seven patients (43 percent) had complete resolution of symptoms of constipation or difficult evacuation. Six patients still complained of incomplete evacuation that was severe in two and unresponsive to postoperative biofeedback. Three patients (18 percent) complained of diarrhea (>5 bowel movements per day) and incontinence of liquid stools (at least one episode a week). Nine patients (56 percent) were satisfied despite persistent symptoms. CONCLUSIONS: Subtotal colectomy can improve some symptoms in patients with slow transit constipation and nonrelaxing pelvic floor. However, incomplete evacuation persists in a significant number of patients and almost one-half of patients are dissatisfied with their
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