» Articles » PMID: 17360577

Paradoxical Influence of Hippocampal Neurogenesis on Working Memory

Overview
Specialty Science
Date 2007 Mar 16
PMID 17360577
Citations 110
Authors
Affiliations
Soon will be listed here.
Abstract

To explore the function of adult hippocampal neurogenesis, we ablated cell proliferation by using two independent and complementary methods: (i) a focal hippocampal irradiation and (ii) an inducible and reversible genetic elimination of neural progenitor cells. Previous studies using these methods found a weakening of contextual fear conditioning but no change in spatial reference memory, suggesting a supportive role for neurogenesis in some, but not all, hippocampal-dependent memory tasks. In the present study, we examined hippocampal-dependent and -independent working memory using different radial maze tasks. Surprisingly, ablating neurogenesis caused an improvement of hippocampal-dependent working memory when repetitive information was presented in a single day. These findings suggest that adult-born cells in the dentate gyrus have different, and in some cases, opposite roles in distinct types of memory.

Citing Articles

The longitudinal behavioral effects of acute exposure to galactic cosmic radiation in female C57BL/6J mice: Implications for deep space missions, female crews, and potential antioxidant countermeasures.

Yun S, Kiffer F, Bancroft G, Guzman C, Soler I, Haas H J Neurochem. 2024; 169(1):e16225.

PMID: 39318241 PMC: 11658192. DOI: 10.1111/jnc.16225.


SYK-623, a δ Opioid Receptor Inverse Agonist, Mitigates Chronic Stress-Induced Behavioral Abnormalities and Disrupted Neurogenesis.

Iwai T, Mishima R, Hirayama S, Nakajima H, Oyama M, Watanabe S J Clin Med. 2024; 13(2).

PMID: 38276114 PMC: 10817044. DOI: 10.3390/jcm13020608.


New Radiobiological Principles for the CNS Arising from Space Radiation Research.

Britten R, Limoli C Life (Basel). 2023; 13(6).

PMID: 37374076 PMC: 10303969. DOI: 10.3390/life13061293.


Effects of High-Fat and High-Fat High-Sugar Diets in the Anxiety, Learning and Memory, and in the Hippocampus Neurogenesis and Neuroinflammation of Aged Rats.

Mota B, Ramos M, Marques S, Silva A, Pereira P, Madeira M Nutrients. 2023; 15(6).

PMID: 36986100 PMC: 10053405. DOI: 10.3390/nu15061370.


Predicting progression to Alzheimer's disease with human hippocampal progenitors exposed to serum.

Maruszak A, Silajdzic E, Lee H, Murphy T, Liu B, Shi L Brain. 2023; 146(5):2045-2058.

PMID: 36703180 PMC: 10151193. DOI: 10.1093/brain/awac472.


References
1.
Wall P, Messier C . The hippocampal formation--orbitomedial prefrontal cortex circuit in the attentional control of active memory. Behav Brain Res. 2001; 127(1-2):99-117. DOI: 10.1016/s0166-4328(01)00355-2. View

2.
Snyder J, Kee N, Wojtowicz J . Effects of adult neurogenesis on synaptic plasticity in the rat dentate gyrus. J Neurophysiol. 2001; 85(6):2423-31. DOI: 10.1152/jn.2001.85.6.2423. View

3.
Saxe M, Battaglia F, Wang J, Malleret G, David D, Monckton J . Ablation of hippocampal neurogenesis impairs contextual fear conditioning and synaptic plasticity in the dentate gyrus. Proc Natl Acad Sci U S A. 2006; 103(46):17501-6. PMC: 1859958. DOI: 10.1073/pnas.0607207103. View

4.
Floresco S, Seamans J, Phillips A . Selective roles for hippocampal, prefrontal cortical, and ventral striatal circuits in radial-arm maze tasks with or without a delay. J Neurosci. 1997; 17(5):1880-90. PMC: 6573377. View

5.
Lee I, Kesner R . Differential roles of dorsal hippocampal subregions in spatial working memory with short versus intermediate delay. Behav Neurosci. 2003; 117(5):1044-53. DOI: 10.1037/0735-7044.117.5.1044. View