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. 2020 Jan 10;40(1):BSR20193510. doi: 10.1042/BSR20193510

Table 1. Summarized studies showing the key role of connexins in memory formation.

S. No Study plan Key findings References
1. Inhibition of brain hemichannels by transactivator of transcription-linked Gap19 (TAT-Gap19) Impairment in the spatial memory in Y maze task [14]
2. Microinfusion of TAT-Cx43L2 and Gap27, inhibitors of connexin 43 hemichannels, into the basolateral amygdala Development of amnesia during fear conditioning [16]
3. d-Galactose-induced AD in ovariectomy-subjected mice Disruptions in the structural integrity of neuronal-glial units and decreased expressions of connexin 43 [19]
4. Depletion of drebrin, a binding partner of the connexin 43, using siRNA Cognitive decline along with a decrease in connexin 43 [20–23]
5. Comparison of slices of the hippocampal CA1 area obtained from connexin 36 knockout and normal mice Significant reduction in LTP in the hippocampal slices obtained from connexin 36 knockout mice [26]
6. Evaluation of memory in connexin 36 knockout mice Impairment in spatial short-term memory in these mice [27]
7. Evaluation of changes in connexin levels during memory consolidation in the passive avoidance test Up-regulation of connexins 36 and 45 mRNAs in the hippocampus [28]
8. Chronic cerebral hypoperfusion by permanent occlusion of carotid arteries-induced vascular dementia The decrease in the mRNA and protein expression of connexins 32 and 36 in the hippocampus [30]