Early experience effect on dendritic branching in normally reared kittens

Spinelli, D.N.; Jensen, FE; Prisco, Gonzalo Viana Di

doi:10.1016/0014-4886(80)90063-1

Cited by 53 publications

(9 citation statements)

References 8 publications

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“…Branching at dendritic tips also occurs during the acquisition of foraging experience. Increased dendritic branching in response to an enriched environment (Volkmar and Greenough, 1972;Greenough and Volkmar, 1973;Uylings et al, 1978) or training experience (Spinelli et al, 1980;Greenough et al, 1985;Kolb and Whishaw, 1998) is characteristic of mammalian neurons.…”

Section: Discussionmentioning

confidence: 99%

Experience- and Age-Related Outgrowth of Intrinsic Neurons in the Mushroom Bodies of the Adult Worker Honeybee

Farris¹,

2001

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A worker honeybee performs tasks within the hive for approximately the first 3 weeks of adult life. After this time, it becomes a forager, flying repeatedly to collect food outside of the hive for the remainder of its 5-6 week life. Previous studies have shown that foragers have an increased volume of neuropil associated with the mushroom bodies, a brain region involved in learning, memory, and sensory integration. We report here that growth of the mushroom body neuropil in adult bees occurs throughout adult life and continues after bees begin to forage. Studies using Golgi impregnation asked whether the growth of the collar region of the mushroom body neuropil was a result of growth of the dendritic processes of the mushroom body intrinsic neurons, the Kenyon cells. Branching and length of dendrites in the collar region of the calyces were strongly correlated with worker age, but when age-matched bees were directly compared, those with foraging experience had longer, more branched dendrites than bees that had foraged less or not at all. The density of Kenyon cell dendritic spines remained constant regardless of age or behavioral state. Older and more experienced foragers therefore have a greater total number of dendritic spines in the mushroom body neuropil. Our findings indicate that, under natural conditions, the cytoarchitectural complexity of neurons in the mushroom bodies of adult honeybees increases as a function of increasing age, but that foraging experience promotes additional dendritic branching and growth.

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Section: Discussionmentioning

confidence: 99%

Experience- and Age-Related Outgrowth of Intrinsic Neurons in the Mushroom Bodies of the Adult Worker Honeybee

Farris¹,

2001

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“…No attempt was made to correct for compression of the three-dimensional dendritic arbor to a two-dimensional sketch since the relative differences between neurons remain constant when transformed from three to two dimensions. 34 Because the dendritic arbor is confined to the tissue section, no stereological method was used. However, for the soma parameters the image analyzer did some calculations similar to those described elsewhere.…”

Section: Morphometric Analysismentioning

confidence: 99%

Effects of perinatal undernutrition on the development of neurons in the rat insular cortex

Salas

Torrero

Rubio

et al. 2012

Nutritional Neuroscience

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The insular cortex (IC) of the rat is a major area for the convergence and integration of olfactory, gustatory, and visual information, and at present it is unclear if perinatal undernutrition interferes with the structure and function of the IC neurons. Golgi-Cox-stained cells of the IC were studied in control and undernourished Wistar rats at 12, 20, and 30 days of age. Pregnant dams were undernourished by the reduction of a balanced diet during a part of the gestational period (G6-G18). After parturition (P1-P23) pups remained for 12 hours with a normal and 12 hours with a nipple-ligated dam. Undernutrition significantly reduced the number, and the arborization of the dendritic arbors, and the perimeter, and cross-sectional area of perikarya. The IC neuronal morphology appearances suggest a possible mechanism for the impairment in information processing of complex phenomena such as taste sensation and hedonic response.

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“…No attempt was made to correct the compression of the three-dimensional dendritic arbor to a two-dimensional sketch since the relative differences between neurons remain constant when transformed from three to two dimensions (Spinelli et al, 1986). Because the dendritic arbor is confined to the tissue section, no stereological method were used.…”

Section: Morphometric Analysismentioning

confidence: 99%

Alterations in the Solitary Tract Nucleus of the Rat Following Perinatal Food Restriction and Subsequent Nutritional Rehabilitation

Rubio¹,

Torrero²,

Regalado³

et al. 2004

Nutritional Neuroscience

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Newborn of altricial species maintain functional gustatory communication with the mother because the neural substrate and the capacity to discriminate and promote gustofacial responses are already operating. Because little is known about the effects of perinatal food restriction upon gustatory neuronal brain stem structures, we characterized neuronal Golgi-Cox alterations of the solitary tract rostral portion (NSTr) where gustatory information is known to convey in neonatal Wistar rats. Pre-and neonatally undernourished rats exhibited a general reduction in the number and extension of distal dendrites particularly in small neurons but little effect upon perikarya measurements of the NSTr neuronal population. By contrast, in nutritional and sensory rehabilitated rats the number of distal dendrites increased, although the dendritic extensions were less affected compared to perinatally underfed and control subjects. The data indicate that perinatal food restriction interferes with the NSTr dendritic arbor organization, while nutritional and sensorial rehabilitation given by normally lactating dams induced plastic changes presumably modifying the integrative processes underlying early taste discriminative capabilities. Moreover, since perinatal food restriction is a powerful stressor influence and the NST forms a part of a complex system underlying adaptive stress responses, the neuronal alterations observed here may be partly due to this noxious perinatal influence.

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Early experience effect on dendritic branching in normally reared kittens

Cited by 53 publications

References 8 publications

Experience- and Age-Related Outgrowth of Intrinsic Neurons in the Mushroom Bodies of the Adult Worker Honeybee

Experience- and Age-Related Outgrowth of Intrinsic Neurons in the Mushroom Bodies of the Adult Worker Honeybee

Effects of perinatal undernutrition on the development of neurons in the rat insular cortex

Alterations in the Solitary Tract Nucleus of the Rat Following Perinatal Food Restriction and Subsequent Nutritional Rehabilitation

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