(1) In 24,089 autopsy records from 1956 to 1979 we found in 16,653 corpses without gallstones 495 = 2.97%, and in 7,436 corpses with gallstones 266 = 3.57% colorectal cancers.--(2) In 503 corpses with previous cholecystectomy performed more than one year before death we found 17 = 3.38% colorectal cancers.--(3) There is no higher incidence of colorectal cancer after cholecystectomy.--(4) In the corpses with gallstones, cholecystectomy or cirrhosis of the gallbladder there were significantly more cancers in the right hemicolon than in corpses without gallstones.--(5) A synetiology by genetic, epidemiologic or (and) metabolic factors may be possible.--(6) A Co-influence of primary bile acids on the genesis of colorectal cancer is discussed.--(7) In patients over 50 years with gallstones it is mandatory for the surgeon to exclude a co-existing colorectal cancer before performing cholecystectomy.
Multiparous Holstein cows (n = 18) were bred artificially to the same bull and then slaughtered at times ranging from 190 to 270 d postconception to assess accretion of energy, protein, fat, and ash by the conceptus. Wet weights, dry weights, and concentrations of energy, CP, crude fat, and ash were obtained for the following: fetus, combined amniotic and allantoic fluids, fetal membranes, cotyledons, caruncles, and uterine tissues. Rates of accumulation of these components in the gravid uterus (sum of all uterine contents) and fetus were described by linear or quadratic equations. Estimated rates of accretion of energy in the gravid uterus (i.e., conceptus) increased from 567 kcal/d at 190 d of gestation to 821 kcal/d at 270 d of gestation; corresponding rates of accretion of CP were 62 and 117 g/d. These daily rates represent net energy and protein requirements for conceptus growth during late pregnancy in mature Holstein cows. Conversion of predicted net energy to metabolizable energy requirements for conceptus growth, using the accepted efficiency factor of .14, yielded estimates that were consistent with current NRC recommendations. Factorial estimation of absorbed protein requirements is hampered by lack of precise information on the efficiency with which absorbed AA are deposited in conceptus tissues.
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