Abstract:
:The subventricular zone remains mitotically active throughout life in rodents. Studies with tritiated thymidine, which is incorporated into the DNA of mitotic cells, have revealed that the rodent subventricular zone produces neuroblasts that migrate toward the olfactory bulb along the rostral migratory stream. A similar migratory stream has been documented in monkeys by using the thymidine analogue BrdUrd. The same approach showed that neurogenesis occurred in the dentate gyrus of adult primates, including humans. In the present study, experiments combining injections of BrdUrd and the dye 1,1'-dioctadecyl-3,3,3',3'-tetramethylindo-carbocyanine, with the immunostaining for molecular markers of neurogenesis (polysialylated neural cell adhesion molecule, beta-tubulin-III, collapsin response mediator protein-4, neuronal nuclear protein) in New World (Saimiri sciureus) and Old World (Macaca fascicularis) monkeys have revealed that new neurons are produced in the amygdala, piriform cortex, and adjoining inferior temporal cortex in adult primates. These newborn neurons expressed the antiapoptotic protein Bcl-2 and formed a more-or-less continuous pathway that extended from the tip of the temporal ventricular horn to the deep portion of the temporal lobe. The production of newborn neurons in the amygdala, piriform cortex, and inferior temporal cortex seems to parallel the continuing addition of neurons in the olfactory bulb. These two concomitant phenomena may ensure structural stability and functional plasticity to the primate olfactory system and temporal lobe.
journal_name
Proc Natl Acad Sci U S Aauthors
Bernier PJ,Bedard A,Vinet J,Levesque M,Parent Adoi
10.1073/pnas.172403999keywords:
subject
Has Abstractpub_date
2002-08-20 00:00:00pages
11464-9issue
17eissn
0027-8424issn
1091-6490pii
172403999journal_volume
99pub_type
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