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Gail Landsman 《Medical anthropology quarterly》2004,18(1):115-116
They're All My Children: Foster Mothering in America. Danielle F. Wozniak. New York: NYU Press, 2002. + 245 pp. 相似文献
5.
Structure of the precursor to an enzyme mediating COOH-terminal amidation in peptide biosynthesis 总被引:7,自引:0,他引:7
B A Eipper L P Park I M Dickerson H T Keutmann E A Thiele H Rodriguez P R Schofield R E Mains 《Molecular endocrinology (Baltimore, Md.)》1987,1(11):777-790
Many bioactive peptides terminate with an amino acid alpha-amide at their COOH terminus. The enzyme responsible for this essential posttranslational modification is known as peptidyl-glycine alpha-amidating monooxygenase or PAM. We identified cDNAs encoding the enzyme by using antibodies to screen a bovine intermediate pituitary lambda gt11 expression library. Antibodies to a beta-galactosidase/PAM fusion protein removed PAM activity from bovine pituitary homogenates. The 108,207 dalton protein predicted by the complete cDNA is approximately twice the size of purified PAM. An NH2-terminal signal sequence and short propeptide precede the NH2 terminus of purified PAM. The sequences of several PAM cyanogen bromide peptides were localized in the NH2-terminal half of the predicted protein. The cDNA encodes an additional 430 amino acid intragranular domain followed by a putative membrane spanning domain and a hydrophilic cytoplasmic domain. The forms of PAM purified from bovine neurointermediate pituitary may be generated by endoproteolytic cleavage at a subset of the 10 pairs of basic amino acids in the precursor. High levels of PAM mRNA were found in bovine pituitary and cerebral cortex. In corticotropic tumor cells, levels of PAM mRNA and pro-ACTH/endorphin mRNA were regulated in parallel by glucocorticoids and CRF. 相似文献
6.
Ken B. Waites Joseph G. Tully David L. Rose Peggy A. Marriott Richard O. Davis Dr. Gail H. Cassell 《Current microbiology》1987,15(6):325-327
Acholeplasmas have been isolated from a variety of animals, insects, and plants, but onlyAcholeplasma laidlawii has previously been found in humans. We have isolatedAcholeplasma oculi in pure culture from the amniotic fluid of a woman at 19 weeks of gestation. The organism was positively identified by growth inhibition, epi-immunofluorescence, and arbutin hydrolysis. Demonstration of organisms directly in amniotic fluid by DNA fluorochrome and immunofluorescence staining provided additional evidence that the isolate was genuine and not a medium contaminant. The remainder of the pregnancy was unremarkable, and a full-term male infant was delivered without complications. Even though there is some evidence possibly associatingA. oculi with various diseases in livestock, the prevalence and significance ofA. oculi in humans has not been determined. 相似文献
7.
Ramon J. Rhine Guy W. Norton Gail M. Wynn Roger D. Wynn 《International journal of primatology》1989,10(4):319-342
Focal-animal feeding data obtained from 64 adult baboons during a 3-year period were used together with equivalent data from
46 infants to evaluate hypotheses predicting selection for a birth peak and to study the baboon’s eclectic/selective feeding
adaptation, with emphasis on differential feeding by sex, developmental trends, and seasonal use of food classes (fruit, leaf,
flower, grass, etc.). The findings suggest that feeding conditions are better in the wet season than in the dry season. Despite
large sexual dimorphism, estimates of total amounts eaten were virtually identical for males and females. Infants used all
of the same plant-food classes as adults, but proportional differences occurred for some food classes in amounts eaten. Foods
eaten proportionately less by infants were probably harder for them to obtain and process or were chosen through inexperience
or for exploration. There was considerable between-year variation in amounts of food classes eaten, but the within-year standard
deviations were similar, as were also the mean amounts eaten per year. An eclectic/selective feeding adaptation has the advantage
of permitting long-run acquisition of adequate nutrition within a context of high feeding variation from season to season
and year to year. Mixed results were obtained from hypotheses about selection for a birth peak. Although a peak occurred in
the early dry season, this was not the optimal time of birth for survival. Survival was highest for individuals born in the
late wet season, when the availability and probably the quality of food for lactating mothers were greatest. 相似文献
8.
Bhuwan Joshi Ayan Chakrabarty Christopher Bruot Hannah Ainsworth Gail Fraizer et al. 《Plant Growth Regulation》1989,8(3):286-286
Book Review
Techniques in molecular biologyJ.M. Walker and W. Gaastra (Eds.), vol. 2. London: Croom Helm, 1987. iv + 332 pages. £14.95. ISBN 0-7099-3673-7 相似文献9.
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Helen L. Henry Chhanda Dutta Noreen Cunningham Raymond Blanchard Robert Penny Chilung Tang Gail Marchetto Shu-Yin Chou 《The Journal of steroid biochemistry and molecular biology》1992,41(3-8)
The synthesis of 1,25(OH)2D3 is a critical control point in the regulation of calcium metabolism, and possibly in the growth and differentiation of a number of cell types. This paper reviews our current understanding of the regulation of this process at the cellular and molecular levels, with the emphasis on the mechanisms of feedback control 1,25(OH)2D3 itself, control of parathyroid hormone, the roles of cyclic AMP dependent protein kinase and protein kinase C, and the interaction between the various intracellular regulators of 1,25(OH)2D3 production. 相似文献