Showed
that individual neurons in the basolateral nucleus of the amygdale responded
both CS and the United States only after it was learned the link between the CS
and the United States. It is suggested that once the memory is encoded, are
consolidated through off-line activity of nerve band (for example, the activity
during rest or sleep when there is no CS or the United States). Maroon and
others. [32] Compared the band activity of nerve cells in the hippocampus
during the exploration period and then a period of rest following by using the
method of catfish. The researchers found that the expression pattern of the arc
during the rest period summarized in part that the exploration period.
Hashikawa and others. [33] The extension of this idea through associative
learning amygdale in fear conditioning using a model study showed that the amygdale
neurons that expressed the arc during the re-conditioning also preferentially
expressed arc during the following amenities. In addition to monitoring the
Independent Evaluation Group products, and promoters for IEGs it can be used
for the detection of nerve cells that are involved in learning.
Reijimers and
others. [34] perception-c positive using the Focused In modified mouse line genetically
engineered neurons farmers 'organizations expressing beta-galactosidase (Lack)
under the control of promoter-c farmers' organizations by TTA-Tito-system self
enabled to study the impact of the memory of the memory of fear the tone in the
amygdale (Figure 3). During the training, and was induced Lack in some neurons
in the amygdale. Interestingly, it was the same Lack-positive cells also
positive for Zif268 after memory retrieval, which indicates that the positive
cells double- to fear memory codes. Been using a similar technique to induce
the expression of manufactured newly receptor type AMPA glutamate (AMAP)
selectively in neurons that have been activated during the formation of memory
(i.e., C-Federal Bureau of Statistics activate nerve cells), which it was then
translocated to certain types of spine dendrite [35]. Recent advances in
fluorescent imaging techniques allow us to study the neurons that are involved
in memory in living material. Was established mouse line that GFP knocked in
the position of the arc promoter for this purpose, however, it can be confused
experimental results of the phenotype caused by loss of homozygous genes
bracket (for example, orientation specificity) [36]. Thus, the expression of
fluorescent proteins that can circumvent this issue established [37-41] several
modified mouse lines genetically with bracket or c faux lawns to pay. Signs of
neurological difference using promoter TTA / TetOLacZ-TTA mouse c farmers'
organizations.
Mouse has two alleles are genetically modified. One allele
encodes doxycycline tetracycline sensitive transactivator (TTA) under the
control of the promoter c-farmer organizations. TTA connects the operator
sequence tetracycline (Tito) to induce copies of the gene downstream, and the
suppression of incitement by the presence of doxycycline activity. And the
other expresses the transactivator secondary (TTA *) and tailback under the
control of Tito. TTA * both sensitive to doxycycline and active materially and,
therefore, expressed once, TTA * activates Tito regardless of doxycycline.
Abdullah expressed gain exclusively in nerve cells where the promoter is
activated c farmers' organizations and technology transfer. However, in the
presence of doxycycline, it is turning TTA activity, and thus prevents
interaction with Tito. B. After the withdrawal of doxycycline, is activated TTA
and connects to toot to induce the expression of TTA * the protein in neurons
activated c tailback Federal Bureau of Statistics (purple). C. After the
administration of doxycycline, TTA becomes inactivated again, but also TTA *
still exists, it can maintain the expression of tailback through the activation
of Tito in the ring positive feedback. This system allowing for permanent signs
of neurons activated even in the absence of doxycycline. Induction of
expression of c farmers' organizations to adapt indicates that there is a
relationship between the activation of neurological and memory cells, but it
does not necessarily prove that the c-Federal Statistical Office expressing
neurons memory encoding. Keya and others. [42] presented evidence that c-Census
Bureau Federal expression of neurological difference in the nucleus acumens are
involved in the memory associated with a specific context trace (CS) with
cocaine administration (the United States). For the study, which used a
combination of c-fu promoter Lack transgenic mice and Daun02, prod rug which
can be converted to daunorubicin by Lack?
Daunorubicin inhibits neuronal
activity by reducing the CA2 + action potentials dependent [42-44]. Using this
consensual approach, activated c-Federal Bureau of Statistics nerve cells
(neurons any positive Lack) can be selectively inactivated inject able Daun02.
In their studies, and learning-induced expression memory context management of
drug-c farmers' organizations in neurological difference in the nucleus acumens
of rats. Subsequent management of Daun02 reduced cocaine-induced psychological
awareness of the specific context, stressing that the nerve cells that have
been activated during learning also participated in the retrieval of memory
that context is associated with cocaine administration. Using the same C-food Lack
mice, BOSSERT and others. Neurological difference I found that brokered a
setback caused by the context to heroin addiction in the ventral medial
prefrontal cortex [45]. These results indicate that the promoter c-fu can be
used to develop a genetically marked nerve band involved in memory encoding.
Recently, Garner and others. [46] To generate the effect of artificial memory
reported by tagging nerve cells genetically-c prairie farmers' organizations
activated. They used mouse line double-transgenic expressed and acquisition of
technology under the control of the promoter-c transfer of farmers'
organizations and developed protein-coupled receptors G (hM3Dq) under the
tetracycline response element (Tri).
HM3Dq produces polarization neurons in
response to Klozaban- N- oxide (CNO) injection (Fig. 4A, B) [47]. In mice, and
it can be expressed hM3Dq as a sign of a pattern of localization of neuronal
activity (i.e. the pattern of activation of the promoter c-fu) in a certain
period of time (i.e. outside Doxycycline period). First, the mice exposed to
the context of the novel, and the context thousand (Tax), to induce tagging
nerve cells that were active in particular in the context of (Figure 4C, left).
Second, the mice exposed to the context of another novel, Cox, where the foot
shock (US), and injecting the CNO (to activate hM3Dq - and thus Tax neurons
encoding) were administered (Fig. 4C, center), and thus can be associated
information Tax + Cox with shock foot. Finally, the mice showed a freeze only
when signed by injection drug Czechoslovak (pseudo Tax) and exposure to Cox at
one time (Fig. 4C, right), but not when the injection was given CNO's exposure
and Cox alone. The result indicates that rats create a hybrid memory
"synthetic" from Tax pandemic. Using the same promoter TTA mouse line
c Federal Statistics Office in combination with the viral delivery of
TRE-channelrhodopsin, Liu et al. [48] showed that the optical nerve reactivate
the band involved in memory encoding in the dentate gyros was enough to
retrieve the fear memory (Fig. 4A, D, E).
More importantly, it was not due to
recover when the nerve band was not associated with the United States (i.e. foot
shock), which indicates the presence of a strong causal relationship between
the expression of c-Federal Bureau of Statistics in neurons and the Association
of context and shock (please see section 3 for studies Others use optics
genetic approach). Specific activation of neurological difference that encode
memory. Two studies used the same meadows TTA mouse line c Federal Bureau of
Statistics, as shown in Figure 3. B. The first study, which used the TTA to
induce expression hM3Dq under the control of doxycycline. Jim Initially, the
mice exposed to the context thousand (Tax) in the absence of doxycycline. The
expression is associated with neurological hM3Dq resulting cells that responded
when exposed to Tax. After that, the rats were conditioned fear in the context
of B (Cox) and injected with the CNO to activate neurons that express hM3Dq and
summarize the pattern of neuronal activity that existed during the previous
exposure Tax. In the final test session, the rats exposed for Cox with or
without injection of CNO. Interestingly, injection CNO only the rats were able
to show the memory recall (by displaying behavior freeze). D This study used
the common curriculum consists of farmers-c mice promoter organizations TTA and
AAV vectors carrying the gene expression cassette for ChR2 under the control of
Tito. E. First, and accustomed to the mice's Tax dish mild stimulation. The
mice doxycycline under management at this stage. He said that the mice do not
freeze during this phase, stressing that the stimulus of light alone does not
cause freezing. After that, the withdrawal of doxycycline to enhance the
expression of ChR2 under the control of the promoter c-farmer organizations.
Then, the rats were conditioned to fear Cox.