Many toxic plants are unpalatable, so animals avoid them where possible. However, this is not always the case; locoweeds, for example, are addictive and once a horse has eaten them, it will continue to eat them whenever possible, and can never be exposed to them again.
Micrograph of melanosis coli, with the characteristic mucosal lipofuscin-laden macrophages (brown). Melanosis coli, also pseudomelanosis coli, is a disorder of pigmentation of the wall of the colon, often identified at the time of colonoscopy.It is benign, and may have no significant correlation with disease. The brown pigment is lipofuscin in macrophages, not melanin.urther information: Factitious diarrhea. The most common cause of melanosis coli is the extended use of laxatives, and commonly anthraquinone containing laxatives such as Senna and other plant glycosides.
When this happens, the colon. instead relies on the laxatives to bring on bowel movements. In addition, the ongoing use of laxatives may cause a potassium imbalance in the body, which in. rare cases can become a serious health threat. Treatment Options. No medical treatment is necessary for melanosis coli. Patients are advised to stop taking laxatives, which usually reverses the discoloration of the colon after a fairly short period of time. If constipation â generally defined as the passage of small, hard and dry bowel movements fewer.