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In excised pro(1-1) mutant and corresponding normal type roots of Zea mays L. the uptake and interconversion of [(14)C]proline, [(14)C]glutamic acid, [(14)C]glutamine, and [(14)C]ornithine and their utilization for protein synthesis was measured with the intention of finding an explanation for the
Two Gram-stain-positive bacterial strains, designated as 5L6T and 6L6, isolated from seeds of hybrid maize (Zea mays L., Jingke 968) were investigated using a polyphasic taxonomic approach. The cells were aerobic, motile, endospore-forming and rod-shaped. Phylogenetic analysis based on 16S rRNA gene
Fluazifop-p-butyl (FL) is one of the most popular graminicides from arylophenoxypropionate group. These herbicides act as inhibitors of acetyl-CoA carboxylase (ACCase) that catalyzes the formation of malonyl-CoA during metabolism of lipids and/or of some secondary compounds. On the other hand
Fish or vegetable oils were fed during the promotion stage of a mouse skin carcinogenesis model in order to investigate the effects of dietary fat on tumor development. Two weeks after initiation with 10 nmol dimethylbenz[a]anthracene, SENCAR mice were divided into five groups and maintained on one
To investigate the effect of various levels of corn oil and coconut oil on ultraviolet (UV) light-induced skin tumorigenesis and ornithine decarboxylase (ODC) activity, Sencar and SKH-1 mice were fed one of three 15% (weight) fat semipurified diets containing three ratios of corn oil to coconut oil:
Proline-dependent oxygen uptake in corn mitochondria (Zea mays L. B73 x Mo17 or Mo17 x B73) occurs through a proline dehydrogenase (pH optimum around 7.2) bound to the matrix side of the inner mitochondrial membrane. Sidedness was established by determining the sensitivity of substrate-dependent
Sprague-Dawley rats (F-1) were fed a normal protein (19% casein, NP) or high protein (33% casein, HP) isoenergetic diet containing 15% corn oil prior to conception. Female pups (F-2) were also fed the maternal diet after weaning. At 7 wk of age, before saline or N-nitrosomethylurea (NMU) treatment,
In extracts from the youngest leaves of Avena sativa, Hordeum vulgare, Zea Mays, Pisum sativum, Phaseolus vulgaris, Lactuca sativa, and four pyrrolizidine alkaloid-bearing species of Heliotropium, the activities of ornithine decarboxylase, close to V(max), ranged between traces and 1.5 nanomoles per
Mature, female swine were randomly assigned to one of seven dietary groups. Swine in groups 1-3 were fed a cholesterol-rich diet for 55 days while the remaining groups remained on a basal swine diet. At the end of the cholesterol(Chol)-preloading period the swine in groups 1-7 were placed on
Epidemiological and laboratory animal model studies suggest that the effect of dietary fat on colon carcinogenesis depends on the amount and its type. In the present study, we investigated the modulating effect of high-fat diets rich in omega-3, omega-6 and omega-9 fatty acids on liver, colon and
The effects of 2,2',4,4',5,5'-hexachlorobiphenyl (2,4,5-HCB) or 3,3',4,4',5,5'-hexachlorobiphenyl (3,4,5-HCB) on hepatic ornithine decarboxylase (ODC) induction by dexamethasone were investigated. At one week after a single i.p. dose of corn oil or 2,4,5,-HCB and 4 h after administration of
In one experiment Swiss mice were maintained on a 16 or 23% fat diet (laboratory chow with added fat, principally corn oil) or on laboratory chow alone (5.5% fat). In another experiment C57BL/1 mice were given a 23% fat diet (as above) or a low-fat diet (67% laboratory chow, 1.9% corn oil, and 31%
To investigate the effects of two levels of dietary corn oil on tumorigenesis, semipurified diets containing 5% or 10% corn oil were fed during the promotion stage of a mouse skin carcinogenesis model. Sencar mice were initiated with 10 nmol dimethylbenz[a]anthracene (DMBA) and promoted with either
The effect of various levels of polyunsaturated fat (corn oil) and saturated fat (lard) fed during the initiation stage of colon carcinogenesis was studied in male F344 rats. The animals were fed the diets containing 5, 13.6, and 23.5% corn oil or lard 2 weeks before, during, and until 1 week after
Recently, our laboratory has demonstrated that elevations in the levels of N1-acetylspermidine could be detected in the colonic mucosa of rats after administration of 1,2-dimethylhydrazine for 15 weeks, i.e., before the development of colon tumors. Since prior studies have indicated that diets high