Metabolic profiling: a new tool in the study of wood formation     

Morris CR  Scott JT  Chang HM  Sederoff RR  O'Malley D  Kadla JF 《Journal of agricultural and food chemistry》2004,52(6):1427-1434

In the realm of plant genomics, metabolic profiling has become a valuable tool with which to assess the effect of genetic and/or environmental factors on plant development. This paper reports the first application of metabolic profiling on differentiating xylem tissue of loblolly pine. A protocol is presented for the analysis of loblolly pine xylem tissue. The effects of sample preparation, extraction, and derivatization on the corresponding metabolite profiles and yields have been investigated and are reported. Gas chromatography-mass spectroscopy has been used to quantify >60 polar and lipophilic metabolites from wood-forming tissue. It was possible to assign chemical structures to approximately half of these compounds. Comparison of six loblolly pine genotypes, three high cellulose (50-52%) and three medium (45-48%) cellulose, showed distinct metabolic profiles. Principal component analysis enabled the assignment of metabolic phenotypes using these large data sets. Metabolic phenotype clustering occurred in which the three high-cellulose genotypes were segregated from the medium-cellulose genotypes. These results demonstrate the use of metabolic profiling for the study of wood-forming tissue and as a tool in functional genomics.  相似文献   

Protein synthesis: differential stimulation of cell-specific proteins in epithelial cells of chick oviduct   总被引：9，自引：0，他引：9  

P O Kohler  P M Grimley  B W O'Malley 《Science (New York, N.Y.)》1968,160(823):86-87

Immunofluorescent and radioautographic studies demonstrate that ovalbumin and avidin are cell-specific proteins synthesized by different epithelial cells in the chick oviduct mucosa. The mechanism of the selective induction of ovalbumin synthesis by estrogen and of avidin synthesis by progesterone may be through stimulation of specific target cells by these hormones.  相似文献   

Estrogen binding, receptor mRNA, and biologic response in osteoblast-like osteosarcoma cells   总被引：49，自引：0，他引：49  

B S Komm  C M Terpening  D J Benz  K A Graeme  A Gallegos  M Korc  G L Greene  B W O'Malley  M R Haussler 《Science (New York, N.Y.)》1988,241(4861):81-84

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Requirement for DARPP-32 in progesterone-facilitated sexual receptivity in female rats and mice     

Mani SK  Fienberg AA  O'Callaghan JP  Snyder GL  Allen PB  Dash PK  Moore AN  Mitchell AJ  Bibb J  Greengard P  O'Malley BW 《Science (New York, N.Y.)》2000,287(5455):1053-1056

DARPP-32, a dopamine- and adenosine 3',5'-monophosphate (cAMP)-regulated phosphoprotein (32 kilodaltons in size), is an obligate intermediate in progesterone (P)-facilitated sexual receptivity in female rats and mice. The facilitative effect of P on sexual receptivity in female rats was blocked by antisense oligonucleotides to DARPP-32. Homozygous mice carrying a null mutation for the DARPP-32 gene exhibited minimal levels of P-facilitated sexual receptivity when compared to their wild-type littermates. P significantly increased hypothalamic cAMP levels and cAMP-dependent protein kinase activity. These increases were not inhibited by a D1 subclass dopamine receptor antagonist. P also enhanced phosphorylation of DARPP-32 on threonine 34 in the hypothalamus of mice. DARPP-32 activation is thus an obligatory step in progestin receptor regulation of sexual receptivity in rats and mice.  相似文献   

Coordinate regulation of transcription and splicing by steroid receptor coregulators     

Auboeuf D  Hönig A  Berget SM  O'Malley BW 《Science (New York, N.Y.)》2002,298(5592):416-419

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Transgenerational epigenetic instability is a source of novel methylation variants     

Schmitz RJ  Schultz MD  Lewsey MG  O'Malley RC  Urich MA  Libiger O  Schork NJ  Ecker JR 《Science (New York, N.Y.)》2011,334(6054):369-373

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Observations on blood coagulation after snakebite in dogs and cats     

SA. HOLLOWAY  BW. PARRY† 《Australian veterinary journal》1989,66(11):364-366

Blood samples from 13 cases of snakebite, 6 in dogs and 7 in cats, were tested for activated partial thromboplastin time (APTT), prothrombin time (PT) and fibrin/fibrinogen degradation products (FDP). Four cases were tested for fibrinogen concentration. Based on the results of a commercially available ELISA test, 9 cases were caused by tiger snakes (Notechis scutatus) and 1 case by a brown snake (Pseudonaja textilis). Three other cases had clinical signs and increased creatine phosphokinase values which suggested tiger snake envenomation. Although the period post-envenomation varied, results indicated a marked prolongation of the APTT and PT in 5 of 6 dogs. Three of these 5 dogs also had increased FDP values and 3 (of 3 examined) were hypofibrinogenaemic. Clinical manifestations of this coagulopathy were: haematoma formation after venepuncture (3 cases), gingival petechiae (1 case) and hyphaema (1 case). In contrast, there was minimal or no prolongation of the APTT and PT values, and no increase in FDP, in all 7 cats. Furthermore, no cat exhibited clinical signs of a coagulopathy.  相似文献   

Mucopolysaccharidosis type VII in a German Shepherd Dog     

Silverstein Dombrowski DC  Carmichael KP  Wang P  O'Malley TM  Haskins ME  Giger U 《Journal of the American Veterinary Medical Association》2004,224(4):553-7, 532-3

A 12-week-old male German Shepherd Dog was evaluated because of a 3-week history of a progressive inability to ambulate. Clinical and laboratory findings included skeletal deformities, corneal cloudiness, cytoplasmic granules in the neutrophils and lymphocytes of blood and CSF and glycosaminoglycans in a urine sample (detected via a toluidine blue spot test). Enzyme activity and DNA analyses confirmed mucopolysaccharidosis type VII as a result of severe beta-glucuronidase deficiency; this condition had been identified in a mixed-breed dog (likely of German Shepherd Dog descent) that was reported 20 years earlier and caused by the same missense mutation. Because of the progressive nature of this disease, the puppy was euthanatized and all tissues examined contained evidence of lysosomal storage leading to marked cellular distention. Mucopolysaccharidosis type VII is only one of many hereditary lysosomal storage diseases identified in companion animals. It is important that clinicians recognize the typical signs of lysosomal storage diseases and are aware of the cytologic and urinary screening tests for mucopolysaccharidosis disorders. Furthermore, there are specific blood enzyme and DNA-based tests to distinguish the forms of mucopolysaccharidosis in affected and carrier animals.  相似文献   

PrP antibodies do not trigger mouse hippocampal neuron apoptosis     

Klöhn PC  Farmer M  Linehan JM  O'Malley C  Fernandez de Marco M  Taylor W  Farrow M  Khalili-Shirazi A  Brandner S  Collinge J 《Science (New York, N.Y.)》2012,335(6064):52

Intraperitoneal administration of ICSM18 and 35, monoclonal antibodies against prion protein (PrP), has been shown to significantly delay the onset of prion disease in mice, and humanized versions are candidate therapeutics for prion and Alzheimer's diseases. However, a previous report of severe and widespread apoptosis after intracerebral injection of anti-PrP monoclonal antibodies raised concerns about such therapy and led to an influential model of prion neurotoxicity via cross-linking of cell surface PrP by disease-related PrP aggregates. In extensive studies including ICSM18 and 35, fully humanized ICSM18, and the previously reported proapoptotic antibodies, we found no evidence of apoptosis, thereby questioning this model of prion neurotoxicity.  相似文献   

Characterization of the trade in manta and devil ray gill plates in China and South‐east Asia through trader surveys          下载免费PDF全文

Mary p. O'Malley  Kathy A. Townsend  Paul Hilton  Shawn Heinrichs  Joshua D. Stewart 《水产资源保护:海洋与淡水生态系统》2017,27(2):394-413