Acorn production varies considerably among oak (Quercus) species, individual trees, years, and locations, which directly affects oak regeneration and populations of wildlife species that depend on acorns for food. Hard mast indices provide a relative ranking and basis for comparison of withinand between-year acorn crop size at a broad scale, but do not provide an estimate of actual acorn yield—...

In the present study, we determined the involvement of brainstem catecholaminergic inputs to the paraventricular nucleus (PVN) on estrogen receptor alpha (ERalpha) expression in this nucleus during conditions of 48-h fasting, 2-deoxy-d-glucose (2DG)-induced acute glucoprivation and 1-h immobilization, in ovariectomized rats. Our approach was to examine the effect of lesioning catecholaminergic ...

Plant interactions have long been the subject of intense research and debate in ecology. Competition facilitation are known to be basic drivers community structure, species coexistence, forest succession dynamics; however, there remains a lack understanding how spatial patterns affect these mixed coniferous broad-leaved species. In present study, we studied roles competition Zhejiang Province, ...

The phorbol ester, 12-O-tetradecanoylphorbol-13-acetate (TPA), enhances transcription of many eukaryotic genes, including that for dopamine b-hydroxylase (DBH). In the present study, we report identification and characterization of a novel sequence motif residing in the 5*-flanking region of the human DBH gene, which mediates transcriptional induction by TPA. Deletional analyses indicated the p...

The resistance of breast cancer to radiotherapy remains a major obstacle to successful cancer management. Radiotherapy may result in DNA damage and activate breast cancer stem cells. DNA damage may lead to activation of the checkpoint kinase (CHK) signaling pathway, of which debromohymenialdisine (DBH) is a specific inhibitor. Radiotherapy also increases the expression of phosphorylated CHK1/2 ...

I. Height allometries Since 1999, FIA data include height measurements. However, pre-1999 FIA data (which currently comprise most of the available plot re-measurements) do not include height data for most of the U.S. Therefore, incorporating tree height into analyses of pre-1999 FIA data requires height-dbh allometries, which we estimated using the post-1999 FIA data. Because we wished to treat...

In viva biosynthesis of the 2 subunit forms of dopamine B-hydroxylase (DBH) was examined in the rat brain. %-methionine was injected into the noradrenergic neurons of the locus coeruleus (LC) using a stereotactic device. Several hours later, newly synthesized 35S-Met-labeled DBH was immunoprecipitated and quantitated. Both M, = 77,000 (77K) and 73,000 (73K) subunit forms were present in near-eq...

Featured Article: Nagatsu T and Udenfriend S. Photometric assay of dopamine-hydroxylase in human blood. Clin Chem 1972;18:980 –3. This report described a simple assay for measuring the activity of dopamine-hydroxylase (DBH) in human blood. DBH is a copper-containing, ascorbaterequiring glycoprotein enzyme that catalyzes the hydroxylation of dopamine to norepinephrine (NE), the precursor of epin...

The diameter distribution of savanna tree populations is a valuable indicator health because changes in the number and size trees can signal shift from to grassland or forest. Savanna distributions have traditionally been monitored with forestry techniques, where stem at breast height (DBH) measured field within defined sub-hectare plots. However, spatial scale these plots often misaligned vari...