Abstract:
:Osmotic opening of the blood-brain barrier (BBB) most likely is mediated by modification of interendothelial tight junctions, subsequent to shrinkage of cerebrovascular endothelial cells, and not by stimulation of transendothelial vesicular transport or by channel formation. This paper summarizes evidence for this conclusion: osmotic BBB opening is mediated by endothelial cell shrinkage, electron microscopy, with single or serial thin sections, demonstrates penetration of intravascular tracer into brain via tight junctional complexes, the BBB remains open after the brain is fixed, osmotic BBB opening is rapidly reversible, and is insensitive to phenothiazines, and BBB closure following osmotic treatment is size-dependent, indicative of a sieve (pore) mechanism with bulk flow. The entire mechanism of vesicular transport in normal tissue is, furthermore, in doubt, because vesicles that are found in tissue layers connected by tight junctions (e.g., frog nerve perineurium and capillary endoneurium) do not support macromolecular transport.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Rapoport SI,Robinson PJdoi
10.1111/j.1749-6632.1986.tb27155.xsubject
Has Abstractpub_date
1986-01-01 00:00:00pages
250-67eissn
0077-8923issn
1749-6632journal_volume
481pub_type
杂志文章abstract::GEM 231 is a second-generation antisense oligonucleotide targeted against the RIalpha regulatory subunit of cAMP-dependent protein kinase type I (PKA-I). Excessive expression of PKA-I is associated with cell proliferation and transformation, and increased levels of secreted extracellular PKA (ECPKA) are found in the s...
journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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更新日期:2003-05-01 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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abstract::Cotyledons of dark-grown watermelon seedlings contain during the first period of germination, 4 and later 5 MDH isoenzymes. Whereas isoenzymes I, II, and IV belong to the cytosol, isoenzyme III is confined to the mitochondria (mMDH) and isoenzyme V to the glyoxysomes (gMDH). The organelle-bound MDHs were purified to h...
journal_title:Annals of the New York Academy of Sciences
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更新日期:1982-01-01 00:00:00
abstract::Legally, women, Native Americans, and African-Americans were defined by the American Constitution as inferior. The pragmatists gradually showed that all selves are equal. These ideas helped the minorities to attain nearly full legal status. But economic status is going in the other direction, toward inequality. It thr...
journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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更新日期:1975-01-20 00:00:00
abstract::The hemorrhagic strokes, intracerebral (ICH) and subarachnoid hemorrhage (SAH), often have poor outcomes. Indeed, the most common hemorrhagic stroke, ICH, has the highest mortality and morbidity rates of any stroke subtype. In this report, we discuss the evidence for the staging of red blood cell removal after ICH and...
journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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abstract::Glycosylation of alpha-fetoprotein (AFP) by human primary hepatocellular carcinoma (PHC) is abnormal. Concanavalin A (Con A)-affinity molecular variant patterns of serum AFP from patients with PHC are different from those of cord-serum AFP. Different patients with PHC exhibit different Con-A-affinity AFP molecular var...
journal_title:Annals of the New York Academy of Sciences
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更新日期:1983-01-01 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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abstract::Metabolic disorders present a public health challenge of staggering proportions. In diabetes, there is an urgent need to better understand disease heterogeneity, clinical trajectories, and related comorbidities. A pressing and timely question is whether we are ready for precision medicine in diabetes. Some biological ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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abstract::1 alpha,25-Dihydroxyvitamin D3, the active form of vitamin D3, induced maturation of circulating monocytes to form macrophage-epithelioid cells and multinucleated giant cells in vitro. Calcitriol not only promoted the differentiation of monocytes, as shown by the marked morphological changes and enhanced secretion of ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1986.tb18497.x
更新日期:1986-01-01 00:00:00
abstract::Formaldehyde was administered for 104 weeks in drinking water supplied ad libitum at concentrations of 1500, 1000, 500, 100, 50, 10, or 0 mg/L to groups of 50 male and 50 female Sprague-Dawley rats beginning at seven weeks of age. Control animals (100 males and 100 females) received tap water only. Acetaldehyde was ad...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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更新日期:2002-12-01 00:00:00