Abstract:
:A total of 52 monkeys (Macaca fascicularis) were dosed orally with vehicle or 1.5 mg/kg/day of lead on one of four dosing regimens (13 monkeys/group): Group 1, vehicle only; Group 2, dosed with lead from birth onward; Group 3, dosed with lead from birth to 400 days of age and vehicle thereafter; Group 4, dosed with vehicle from birth to 300 days of age and lead thereafter. Blood lead concentrations averaged 3-6 micrograms/dl when monkeys were not being dosed with lead, 32-36 micrograms/dl when being dosed with lead and having access to infant formula, and 19-26 micrograms/dl when being dosed with lead after weaning from infant formula. When monkeys were 7-8 years old, they were tested on three spatial discrimination reversal tasks: no irrelevant cues, irrelevant form cues, and irrelevant form and color cues. Fifteen reversals were run for each task. Only Group 2 was impaired in the absence of irrelevant cues, while all three treated groups were impaired in the presence of irrelevant cues. These results are in contrast to results from a series of nonspatial discrimination reversal tasks in these monkeys in which Groups 2 and 4 were impaired and Group 3 was unimpaired. The present results are in agreement with results from another spatial task, delayed alternation, in which all three treated groups were impaired.
journal_name
Toxicol Appl Pharmacoljournal_title
Toxicology and applied pharmacologyauthors
Rice DCdoi
10.1016/0041-008x(90)90251-osubject
Has Abstractpub_date
1990-11-01 00:00:00pages
327-33issue
2eissn
0041-008Xissn
1096-0333journal_volume
106pub_type
杂志文章abstract::Patients with 45,X0/46XY karyotype often present with intersex phenotype and testicular dysgenesis. These patients may also have undescended testes (cryptorchidism), hypospadias and their spermatogenesis is severely disrupted. They have a high risk for testicular cancer. These patients have the most severe form of tes...
journal_title:Toxicology and applied pharmacology
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journal_title:Toxicology and applied pharmacology
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journal_title:Toxicology and applied pharmacology
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journal_title:Toxicology and applied pharmacology
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journal_title:Toxicology and applied pharmacology
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
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journal_title:Toxicology and applied pharmacology
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journal_title:Toxicology and applied pharmacology
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更新日期:2015-10-01 00:00:00
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(83)90013-3
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
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journal_title:Toxicology and applied pharmacology
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
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journal_title:Toxicology and applied pharmacology
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doi:10.1006/taap.1997.8289
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1006/taap.1995.1132
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章,评审
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2003.09.030
更新日期:2004-03-15 00:00:00
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2012.08.014
更新日期:2012-11-01 00:00:00
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2012.10.020
更新日期:2013-01-01 00:00:00
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2009.05.021
更新日期:2009-09-15 00:00:00
abstract::Arsenic is a toxicant found in ground water around the world, and human exposure mainly comes from drinking water or from crops grown in areas containing arsenic in soils or water. Epidemiological studies have shown that arsenic exposure during development decreased intellectual function, reduced birth weight, and alt...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2014.10.007
更新日期:2014-12-15 00:00:00
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journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2011.08.022
更新日期:2011-12-01 00:00:00