Abstract：
:Sprouting has been studied extensively using morphological markers, but relatively little is known regarding the molecular and biochemical events which underlie the sprouting response. Moreover, due to the lack of suitable markers, it has been difficult to examine changes in the major hippocampal pathways in animal lesion models and in neurological disorders. We utilized two markers, obtained through molecular genetic analysis, to examine alterations in hippocampal circuits following partial deafferentation. SNAP-25, a neuronal specific protein, is located presynaptically in the perforant path, Schaffer collaterals, mossy fibers, and commissural/associational pathways. Selective destruction of CA3 pyramidal neurons, dentate gyrus granule cells, and entorhinal cortical neurons resulted in a loss of SNAP-25 immunoreactivity at the site of the axonal projections of the lesioned neurons. SNAP-25 immunoreactivity was maintained in projections to the lesioned region, and enhanced in areas adjacent to those deafferented by the lesions. Expression of SNAP 25 mRNA was increased in denervated regions, and in neurons which would be expected to participate in the sprouting response. Tubulin-alpha 1 is an mRNA which is expressed at high levels in the fetal brain during periods of neurite outgrowth, but at low levels in the adult brain. The expression of T alpha 1 mRNA was increased in the rat hippocampal neurons following entorhinal lesions, and in the human hippocampus in patients with Alzheimer's disease. These results demonstrate that sprouting in the CNS may result in the replay of developmental patterns of gene expression. Examination of SNAP-25 and T alpha 1 mRNA expression and of SNAP-25 immunoreactivity may be useful in investigating alterations in major hippocampal circuits in a variety of conditions such as learning, hypoxia, hypoglycemia, and also in neurological disorders such as temporal lobe epilepsy and Alzheimer's disease.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Geddes JW,Wilson MC,Miller FD,Cotman CWdoi
10.1007/978-1-4684-5769-8_47subject
Has Abstractpub_date
1990-01-01 00:00:00pages
425-32eissn
0065-2598issn
2214-8019journal_volume
268pub_type
杂志文章,评审abstract：:The mechanisms of sensory transduction in the fine nerve terminals of free nerve endings supplied by Adelta and C sensory axons are largely a matter of speculation. This is because the nerve terminals are small and inaccessible, particularly in intact tissues like skin. However, some of the difficulties associated wit...
journal_title：Advances in experimental medicine and biology
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
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更新日期：2006-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/5584_2016_69
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journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-94-007-4584-1_45
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journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-3-319-98788-0_14
更新日期：2018-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-5143-6_14
更新日期：1986-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4899-1925-0_26
更新日期：1998-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
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更新日期：2010-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4899-0664-9_30
更新日期：1991-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
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journal_title：Advances in experimental medicine and biology
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更新日期：1994-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
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更新日期：1995-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
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更新日期：1977-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
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更新日期：2019-04-11 00:00:00
abstract：:The cellular requirements for generating potent human CD8+ CTLs to influenza A virus in vitro have been defined. Furthermore, we have developed improved methods for generating large numbers of DCs from non-proliferating progenitors. These developments have enabled the design of new strategies to elicit CTLs in vivo. F...
journal_title：Advances in experimental medicine and biology
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更新日期：1997-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
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更新日期：2014-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/0-306-46817-4_21
更新日期：2000-01-01 00:00:00
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-319-52479-5_29
更新日期：2017-01-01 00:00:00
abstract：:With the rapid advancement of high-throughput DNA sequencing technologies, genomics has become a big data discipline where large-scale genetic information of human individuals can be obtained efficiently with low cost. However, such massive amount of personal genomic data creates tremendous challenge for privacy, espe...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-10-6041-0_8
更新日期：2017-01-01 00:00:00
