ELIZA

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611425 occurrences (No.13 in the rank) during 5 years in the PubMed. [cache]

451) Arsenic is a well-established carcinogen known to increase mortality, but its effects on the central nervous system are less well understood.

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PMID:34564357 DOI:10.3390/toxics9090206

2021 Toxics

* Early Low-Level Arsenic Exposure Impacts Post-Synaptic Hippocampal Function in Juvenile Mice.

- Arsenic is a well-established carcinogen known to increase mortality, but its effects on the central nervous system are less well understood. Epidemiological studies suggest that early life exposure is associated with learning deficits and behavioral changes. Studies in arsenic-exposed rodents have begun to shed light on potential mechanistic underpinnings, including changes in synaptic transmission and plasticity. However, previous studies relied on extended exposure into adulthood, and little is known about the effect of arsenic exposure in early development. Here, we studied the effects of early developmental arsenic exposure in juvenile mice on synaptic transmission and plasticity in the hippocampus. C57BL/6J females were exposed to arsenic (0, 50 ppb, 36 ppm) via drinking water two weeks prior to mating, with continued exposure throughout gestation and parturition. Electrophysiological recordings were then performed on juvenile offspring prior to weaning. In this paradigm, the offspring are exposed to arsenic indirectly, via the mother. We found that high (36 ppm) and relatively low (50 ppb) arsenic exposure both decreased basal synaptic transmission. A compensatory increase in pre-synaptic vesicular release was only observed in the high-exposure group. These results suggest that indirect, ecologically relevant arsenic exposure in early development impacts hippocampal synaptic transmission and plasticity that could underlie learning deficits reported in epidemiological studies.

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(2)67 the	(8)4 their	(14)3 on	(20)2 significantly
(3)31 of	(9)4 with	(15)2 null	(21)2 tumor
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(5)6 risk	(11)3 access	(17)2 muscle
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--- WordNet output for increase --- =>大きくなる, を増す, 増大させる, 強まる, 増加, 増える, 増やす Overview of noun increase The noun increase has 5 senses (first 5 from tagged texts) 1. (49) addition, increase, gain -- (a quantity that is added; "there was an addition to property taxes this year"; "they recorded the cattle's gain in weight over a period of weeks") 2. (21) increase -- (a change resulting in an increase; "the increase is scheduled for next month") 3. (7) increase, increment, growth -- (a process of becoming larger or longer or more numerous or more important; "the increase in unemployment"; "the growth of population") 4. (3) increase, increment -- (the amount by which something increases; "they proposed an increase of 15 percent in the fare") 5. (3) increase, step-up -- (the act of increasing something; "he gave me an increase in salary") Overview of verb increase The verb increase has 2 senses (first 2 from tagged texts) 1. (86) increase -- (become bigger or greater in amount; "The amount of work increased") 2. (61) increase -- (make bigger or more; "The boss finally increased her salary"; "The university increased the number of students it admitted") --- WordNet end ---