1976
DOI: 10.1139/z76-133
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The crop as an organ of glyceride absorption in the American cockroach, Periplaneta americana L.

Abstract: 1976. The crop as an organ of glyceride absorption in the American cockroach, Periplaneta americana L. Can. J . Zool. 54: 1165-1 171.The potential of the crop to absorb the products of triglyceride hydrolysis was investigated in the American cockroach, Periplaneta americana. Isolated sacs of crop and midgut tissue were filled with test loads containing [I-'4C]palmitic acid or glyceryl tri[l-14C]palmitic acid and the efflux of label monitored. Label from both preparations was recovered primarily from the free f… Show more

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Cited by 30 publications
(2 citation statements)
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“…The major functions of the insect foregut are uptake, mechanical grinding, and temporary storage of food before its transfer through the proventriculus to the midgut, where enzymatic digestion and nutrient absorption take place ( Chapman, 2013 ; Denecke et al, 2018 ; Holtof et al, 2019 ). Although the permeability of the foregut is generally considered to be very low ( Maddrell and Gardiner, 1980 ), some insect species have been reported to absorb lipophilic compounds, such as cholesterol from the crop ( Hoffman and Downer, 1976 ; Joshi and Agarwal, 1977 ). In addition, lipophilic insecticides have been shown to be taken up into foregut tissue of the honeybee Apis mellifera ( Conner et al, 1978 ).…”
Section: Discussionmentioning
confidence: 99%
“…The major functions of the insect foregut are uptake, mechanical grinding, and temporary storage of food before its transfer through the proventriculus to the midgut, where enzymatic digestion and nutrient absorption take place ( Chapman, 2013 ; Denecke et al, 2018 ; Holtof et al, 2019 ). Although the permeability of the foregut is generally considered to be very low ( Maddrell and Gardiner, 1980 ), some insect species have been reported to absorb lipophilic compounds, such as cholesterol from the crop ( Hoffman and Downer, 1976 ; Joshi and Agarwal, 1977 ). In addition, lipophilic insecticides have been shown to be taken up into foregut tissue of the honeybee Apis mellifera ( Conner et al, 1978 ).…”
Section: Discussionmentioning
confidence: 99%
“…Individual insects were isolated in Petri dishes and held undisturbed for a period of 12 to 16 h prior to dissection. All dissections were performed within 5 min, under ice-cold CPS [12]. Malpighian tubules were removed intact, attached to a section of gut less than 2 mm in length.…”
Section: Materials and Methods Animalsmentioning
confidence: 99%