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F Heim

Publications and source records attributed to F Heim.

At least 37 records · Page 2Linked to original sources

[The correlations between aging and drug effects (author's transl)].

Four examples (Methamphetamine, Testosterone, Caffeine, Cysteamine) have demonstrated that the response of the organism to a drug is primarily dependent upon the functional status of the organ concerned. If this functional status changes with age, then accordingly the reaction to the drug also changes. If, however, one alters the functional status of an organ in the elderly organism, e.g. inducing increased production of DNA in the liver by partial hepatectomy, the reaction of the organ now follows a pattern comparable to the juvenile organism, rather than being dependent on chronological age.

Age Factors↗

[Mode of action of bisacodyl (dulcolax) on isolated muscles of human colon (author's transl)].

The effects of bisacodyl (4,4-diacetyl-bis-hydroxyphenyl-pyridyl-(2)-methan, Dulcolax) on the tone of isolated muscle strips of human colon were examined. Maximal contractions achieved by 10 mug/ml of bisacodyl were quite comparable to those due to 1 mug/ml of acetylcholine, 1 mug/ml of histamine and 0.5 mug/ml of nicotine, respectively. However, peak contractions were attained with a greater latency and could not be prevented by the anticholinergic agent atropine, the H1-antihistaminic diphenhydramin or tetrodotoxin blocking axonal conduction. On the other hand, pretreatment with verapamil -- antagonizing calcium influx into the muscle cell -- abolished bisacodyl effects. These results provide evidence for a direct action of bisacodyl on smooth muscle cells of human colon.

Acetylcholine↗