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Powers G, Lewis B, Min MO, Minnes S, Kim JY, Kim SK, Singer L. The association of prenatal cocaine exposure with expressive and receptive language skills, phonological processing and reading ability at age 17. Neurotoxicol Teratol 2023; 95:107135. [PMID: 36395974 DOI: 10.1016/j.ntt.2022.107135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 11/04/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Prenatal cocaine exposure (PCE) has been associated with small but significant effects on language development in childhood and early adolescence. This study examined whether this association persists into later adolescence and what relationship language skills may have with reading proficiency in this population. METHODS Enrolled were 338 (167 with PCE, 171 with NCE or no cocaine exposure) 17-year-olds recruited at birth who, together with their current caregiver, were seen as part of a 17-year follow-up. Participants were given assessments of reading achievement (WIAT-III), receptive and expressive language (CELF-IV), and phonological processing (CTOPP). Relationships between PCE status and language outcomes were modeled using multiple linear regression controlling for environmental and caregiver factors, and other prenatal substance exposures. RESULTS Adolescents with PCE scored lower in areas of phonological processing and reading related skills compared to adolescents with NCE. PCE by sex interactions were identified on language, memory and spoken language comprehension, with lower scores for girls with PCE compared to girls with NCE. CONCLUSION These findings suggest the persistence of PCE's relationship with phonological awareness well into adolescence. PCE was also associated with lower scores on measures of skills related to reading ability, which may be a manifestation of the observed deficits in phonological processing.
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Affiliation(s)
- Gregory Powers
- Jack, Joseph and Morton Mandel School of Applied Social Sciences, Case Western Reserve University, 11235 Bellflower Road, Cleveland,OH, United States.
| | - Barbara Lewis
- Department of Psychological Sciences, Case Western Reserve University, Cleveland, OH 44106, United States.
| | - Meeyoung O Min
- College of Social Work, University of Utah, 201 Presidents Circle, Salt Lake City, UT 84112, United States.
| | - Sonia Minnes
- Jack, Joseph and Morton Mandel School of Applied Social Sciences, Case Western Reserve University, 11235 Bellflower Road, Cleveland,OH, United States.
| | - June-Yung Kim
- Department of Social Work, University of North Dakota, Gillette Hall Room 302, 225 Centennial, Dr. Stop 7135, Grand Forks, ND 58202-7135, United States.
| | - Sun Kyung Kim
- Jack, Joseph and Morton Mandel School of Applied Social Sciences, Case Western Reserve University, 11235 Bellflower Road, Cleveland,OH, United States.
| | - Lynn Singer
- Department of Population and Quantitative Health Sciences, Case Western Reserve, University, 1090 Euclid Avenue, Cleveland, OH, 44106, United States.
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Effect of socioeconomic status disparity on child language and neural outcome: how early is early? Pediatr Res 2016; 79:148-58. [PMID: 26484621 DOI: 10.1038/pr.2015.202] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 08/23/2015] [Indexed: 11/08/2022]
Abstract
It is not news that poverty adversely affects child outcome. The literature is replete with reports of deleterious effects on developmental outcome, cognitive function, and school performance in children and youth. Causative factors include poor nutrition, exposure to toxins, inadequate parenting, lack of cognitive stimulation, unstable social support, genetics, and toxic environments. Less is known regarding how early in life adverse effects may be detected. This review proposes to elucidate "how early is early" through discussion of seminal articles related to the effect of socioeconomic status on language outcome and a discussion of the emerging literature on effects of socioeconomic status disparity on brain structure in very young children. Given the young ages at which such outcomes are detected, the critical need for early targeted interventions for our youngest is underscored. Further, the fiscal reasonableness of initiating quality interventions supports these initiatives. As early life adversity produces lasting and deleterious effects on developmental outcome and brain structure, increased focus on programs and policies directed to reducing the impact of socioeconomic disparities is essential.
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Lewis BA, Minnes S, Short EJ, Min MO, Wu M, Lang A, Weishampel P, Singer LT. Language outcomes at 12 years for children exposed prenatally to cocaine. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2013; 56:1662-76. [PMID: 24149136 PMCID: PMC4131682 DOI: 10.1044/1092-4388(2013/12-0119)] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
PURPOSE In this study, the authors aimed to examine the long-term effects of prenatal cocaine exposure (PCE) on the language development of 12-year-old children using a prospective design, controlling for confounding prenatal drug exposure and environmental factors. METHOD Children who were exposed to cocaine in utero (PCE; n = 183) and children who were not exposed to cocaine (i.e., no cocaine exposure [NCE]; n = 181) were followed prospectively from birth to 12 years of age and were compared on language subtests of the Test of Language Development-Intermediate, Third Edition ( Hammill & Newcomer, 1997b), and phonological processing as measured by the Comprehensive Test of Phonological Processing ( Wagner & Torgesen, 1999). The authors evaluated the relationship of PCE to language development through a multivariate analysis of covariance and regression analyses while controlling for confounders. RESULTS Results show that PCE has small effects on specific aspects of language, including syntax and phonological processing. The caregiver variables of lower maternal vocabulary, more psychological symptoms, and a poorer home environment also had consistent effects on language and phonological processing scores. CONCLUSIONS These findings suggest that PCE continues to have small, subtle effects on specific aspects of language at age 12 years. Phonological processing skills were significantly related to the reading outcomes of letter-word identification, reading fluency, and reading comprehension, indicating that PCE also has small but lasting effects on the language skills that are related to later literacy skills.
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Handzel JM, Brodsky N, Betancourt L, Hurt H. Longitudinal follow-up of poor inner-city youth between ages 8 and 18: intentions versus reality. Pediatrics 2012; 129:473-9. [PMID: 22351882 PMCID: PMC3289529 DOI: 10.1542/peds.2011-2111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES (1) To document, at ages 8 to 10, children's perceptions of their future and, at ages 16 to 18, youth outcomes; and (2) to assess early childhood factors associated with trajectory-altering events (TAEs), defined as youth risk behaviors that may modify developmental trajectories. METHODS A prospective longitudinal study of 97 poor, inner-city, African American youth followed since birth who completed (1) early childhood environment, cognitive, and social-emotional evaluations, as well as an inventory at ages 8 to 10 of perceptions of their futures; and (2) evaluation for presence or absence of 4 TAEs documented at ages 16 to 18: drug use, adjudication, school failure, and teen parenthood. RESULTS At age 9.4 ± 0.5, 94% of participants felt it unlikely they would try marijuana; 93% felt they were unlikely to get arrested; 92% felt they were likely to attend college or trade school; 81% did not know one could become pregnant with first-time sex. Age 18.1 ± 0.8 outcomes showed that 33% had used drugs, 33% had been adjudicated, 19% had school failure, and 20% had become parents. Fifty-six percent had ≥1 TAE. No relationship was found between childhood perceptions and intentions and documented outcomes. Odds of having a TAE increased with greater exposure to violence and poorer home environment. CONCLUSIONS Young inner-city children are idealistic regarding their future. By ages 16 to 18 however, more than half of this cohort had a TAE. Factors most strongly associated with a TAE were greater exposure to violence and poorer home environment.
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Affiliation(s)
| | - Nancy Brodsky
- Neonatology, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Laura Betancourt
- Neonatology, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Hallam Hurt
- Neonatology, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
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Mactutus CF, Harrod SB, Hord LL, Moran LM, Booze RM. Prenatal IV Cocaine: Alterations in Auditory Information Processing. Front Psychiatry 2011; 2:38. [PMID: 21747770 PMCID: PMC3128243 DOI: 10.3389/fpsyt.2011.00038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Accepted: 06/11/2011] [Indexed: 01/24/2023] Open
Abstract
One clue regarding the basis of cocaine-induced deficits in attentional processing is provided by the clinical findings of changes in the infants' startle response; observations buttressed by neurophysiological evidence of alterations in brainstem transmission time. Using the IV route of administration and doses that mimic the peak arterial levels of cocaine use in humans, the present study examined the effects of prenatal cocaine on auditory information processing via tests of the auditory startle response (ASR), habituation, and prepulse inhibition (PPI) in the offspring. Nulliparous Long-Evans female rats, implanted with an IV access port prior to breeding, were administered saline, 0.5, 1.0, or 3.0 mg/kg/injection of cocaine HCL (COC) from gestation day (GD) 8-20 (1×/day-GD8-14, 2×/day-GD15-20). COC had no significant effects on maternal/litter parameters or growth of the offspring. At 18-20 days of age, one male and one female, randomly selected from each litter displayed an increased ASR (>30% for males at 1.0 mg/kg and >30% for females at 3.0 mg/kg). When reassessed in adulthood (D90-100), a linear dose-response increase was noted on response amplitude. At both test ages, within-session habituation was retarded by prenatal cocaine treatment. Testing the females in diestrus vs. estrus did not alter the results. Prenatal cocaine altered the PPI response function across interstimulus interval and induced significant sex-dependent changes in response latency. Idazoxan, an α(2)-adrenergic receptor antagonist, significantly enhanced the ASR, but less enhancement was noted with increasing doses of prenatal cocaine. Thus, in utero exposure to cocaine, when delivered via a protocol designed to capture prominent features of recreational usage, causes persistent, if not permanent, alterations in auditory information processing, and suggests dysfunction of the central noradrenergic circuitry modulating, if not mediating, these responses.
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Affiliation(s)
- Charles F. Mactutus
- Behavioral Neuroscience Program, Department of Psychology, University of South CarolinaColumbia, SC, USA
| | - Steven B. Harrod
- Behavioral Neuroscience Program, Department of Psychology, University of South CarolinaColumbia, SC, USA
| | - Lauren L. Hord
- Behavioral Neuroscience Program, Department of Psychology, University of South CarolinaColumbia, SC, USA
| | - Landhing M. Moran
- Behavioral Neuroscience Program, Department of Psychology, University of South CarolinaColumbia, SC, USA
| | - Rosemarie M. Booze
- Behavioral Neuroscience Program, Department of Psychology, University of South CarolinaColumbia, SC, USA
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Prenatal cocaine exposure: An examination of childhood externalizing and internalizing behavior problems at age 7 years. ACTA ACUST UNITED AC 2011. [DOI: 10.1017/s1121189x00002001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
SUMMARYAim – This study examines the relationship between prenatal cocaine exposure and parent-reported child behavior problems at age 7 years. Methods – Data are from 407 African-American children (210 cocaine-exposed, 197 non-cocaine-exposed) enrolled prospectively at birth in a longitudinal study on the neurodevelopmental consequences of in utero exposure to cocaine. Prenatal cocaine exposure was assessed at delivery through maternal self-report and bioassays (maternal and infant urine and infant meconium). The Achenbach Child Behavior Checklist (CBCL), a measure of childhood externalizing and internalizing behavior problems, was completed by the child's current primary caregiver during an assessment visit scheduled when the child was seven years old. Results – Structural equation and GLM/GEE models disclosed no association linking prenatal cocaine exposure status or level of cocaine exposure to child behavior (CBCL Externalizing and Internalizing scores or the eight CBCL sub-scale scores). Conclusions – This evidence, based on standardized ratings by the current primary caregiver, fails to support hypothesized cocaine-associated behavioral problems in school-aged children with in utero cocaine exposure. A next step in this line of research is to secure standardized ratings from other informants (e.g., teachers, youth self-report).Declaration of Interest: This research was conducted in the context of an ongoing longitudinal study funded by the National Institutes of Health National Institute on Drug Abuse (R01 DA 06556). Support was also provided by a NIDA career development award (K01 DA 16720), a NIDA research training award (T32 DA 07292), the General Clinical Research Center (MOI RR 16587), and the Health Foundation of South Florida.
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Betancourt LM, Yang W, Brodsky NL, Gallagher PR, Malmud EK, Giannetta JM, Farah MJ, Hurt H. Adolescents with and without gestational cocaine exposure: Longitudinal analysis of inhibitory control, memory and receptive language. Neurotoxicol Teratol 2011; 33:36-46. [PMID: 21256423 DOI: 10.1016/j.ntt.2010.08.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 08/17/2010] [Accepted: 08/17/2010] [Indexed: 02/07/2023]
Abstract
Preclinical studies of gestational cocaine exposure (GCE) show evidence of changes in brain function at the anatomical, physiological, and behavioral levels, to include effects on developing dopaminergic systems. In contrast, human studies have produced less consistent results, with most showing small effects or no effects on developmental outcomes. Important changes in brain structure and function occur through adolescence, therefore it is possible that prenatal cocaine exposure has latent effects on neurocognitive (NC) outcome that do not manifest until adolescence or young adulthood. We examined NC function using a set of 5 tasks designed to tap 4 different systems: inhibitory control, working memory, receptive language, and incidental memory. For each NC task, data were collected longitudinally at ages 12, 14.5 and 17 years and examined using generalized estimating equations. One hundred and nine children completed at least two of the three evaluations. Covariates included in the final model were assessment number, gender, participant age at first assessment, caregiver depression, and two composites from the Home Observation for Measurement of the Environment (HOME), Environmental Stimulation and Parental Nurturance. We found no cocaine effects on inhibitory control, working memory, or receptive language (p=0.18). GCE effects were observed on incidental face memory task (p=0.055), and GCE by assessment number interaction effects were seen on the incidental word memory task (p=0.031). Participant performance on inhibitory control, working memory, and receptive language tasks improved over time. HOME Environmental Stimulation composite was associated with better receptive language functioning. With a larger sample size smaller differences between groups may have been detected. This report shows no evidence of latent effects of GCE on inhibitory control, working memory, or receptive language. GCE effects were observed on the incidental face memory task, and GCE by assessment number interaction effects was seen on the incidental word memory task.
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Affiliation(s)
- Laura M Betancourt
- Division of Neonatology, Department of Pediatrics, The Children's Hospital of Philadelphia, PA, USA.
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Lewis BA, Minnes S, Short EJ, Weishampel P, Satayathum S, Min MO, Nelson S, Singer LT. The effects of prenatal cocaine on language development at 10 years of age. Neurotoxicol Teratol 2010; 33:17-24. [PMID: 20600843 DOI: 10.1016/j.ntt.2010.06.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Revised: 06/21/2010] [Accepted: 06/21/2010] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To examine the long term effects of prenatal cocaine exposure (PCE) on the language development of 10-year-old children utilizing a prospective design, controlling for confounding drug and environmental factors. PARTICIPANTS Children exposed to cocaine in utero (PCE; n=175) and non-exposed children (NCE; n=175) were followed prospectively to 10years of age and were compared on language subscales of the Test of Language Development-Intermediate 3rd Edition (TOLD-I:3) and phonological processing as measured by the Comprehensive Test of Phonological Processing (CTOPP). METHODS Multivariate analysis of covariance (MANCOVA), linear regression, and logistic regressions were used to evaluate the relationship of prenatal cocaine exposure to language development, while controlling for confounders. RESULTS After controlling for confounding variables, prenatal cocaine effects were observed for specific aspects of language including syntax (Sentence Combining subtest of the TOLD-I:3, p=0.001), semantics (Malopropism subtest of the TOLD-I:3, p=0.05) and phonological processing (Phonological Awareness subscale, p=0.01). The caregiver factors of vocabulary, HOME, and psychological symptoms also had consistent effects on language subtests and phonological processing scores. Children with PCE who experienced foster or adoptive care had enhanced language development compared to those living with birth mothers or in relative care. Cocaine exposed girls had lower scores on the phonological awareness subscale of the CTOPP than non-exposed girls. CONCLUSIONS PCE has subtle effects on specific aspects of language development and phonological processing at age 10, even after controlling for confounding variables. Environmental factors (i.e., postnatal lead exposure, home environment, and caregiver vocabulary and psychological symptoms) also impact language skills at 10years. Adoptive or foster care appears to enrich PCE children's linguistic environment and protects children against language delay in the PCE sample.
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Affiliation(s)
- Barbara A Lewis
- Department of Communication Sciences, Case Western Reserve University, Cleveland, OH 44106, USA.
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Hurt H, Betancourt LM, Malmud EK, Shera DM, Giannetta JM, Brodsky NL, Farah MJ. Children with and without gestational cocaine exposure: a neurocognitive systems analysis. Neurotoxicol Teratol 2009; 31:334-41. [PMID: 19686843 DOI: 10.1016/j.ntt.2009.08.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2008] [Revised: 08/04/2009] [Accepted: 08/07/2009] [Indexed: 11/16/2022]
Abstract
BACKGROUND Concern for effects of gestational cocaine exposure (GCE) on human neurocognitive (NC) development is based on effects of cocaine on blood flow to the fetus and impact of cocaine on developing monoaminergic systems. GCE has been shown to affect language, attention and perceptual reasoning skills. OBJECTIVE Our objective was to investigate effects of GCE on 7 NC systems, assessed behaviorally in middle school-aged, low socioeconomic status subjects followed prospectively since birth. METHODS 55 GCE and 65 non-exposed Control subjects were tested with a battery of 14 tasks adapted from neuroimaging and lesion literature designed to tap 3 frontal systems (Cognitive Control, Working Memory, and Reward Processing) and 4 non-frontal systems (Language, Memory, Spatial Cognition, and Visual Cognition). Using multivariate analysis of covariance, we assessed the relation between NC functioning and GCE status with the following covariates: age at testing; gender; gestational exposure to cigarettes, alcohol and marijuana; foster care placement; caregiver current cocaine use; and two indices of childhood environment. RESULTS None of the analyses showed an effect of GCE on NC function. In contrast, child characteristics, including age at testing and childhood environment, were associated with NC function. CONCLUSIONS In this cohort there is either no effect of GCE on NC function at middle school age, or that effect is less pronounced than the effect of age or childhood environment.
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Affiliation(s)
- Hallam Hurt
- Division of Neonatology, Department of Pediatrics, University of Pennsylvania and The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
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Farah MJ, Betancourt L, Shera DM, Savage JH, Giannetta JM, Brodsky NL, Malmud EK, Hurt H. Environmental stimulation, parental nurturance and cognitive development in humans. Dev Sci 2008; 11:793-801. [PMID: 18810850 DOI: 10.1111/j.1467-7687.2008.00688.x] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Martha J Farah
- Department of Psychology and Center for Cognitive Neuroscience, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Levine TP, Liu J, Das A, Lester B, Lagasse L, Shankaran S, Bada HS, Bauer CR, Higgins R. Effects of prenatal cocaine exposure on special education in school-aged children. Pediatrics 2008; 122:e83-91. [PMID: 18541617 PMCID: PMC2861352 DOI: 10.1542/peds.2007-2826] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE The objective of this study was to evaluate the effects of prenatal cocaine exposure on special education at age 7 with adjustment for covariates. METHODS As part of the prospective, longitudinal, multisite study of children with prenatal cocaine exposure (Maternal Lifestyle Study), school records were reviewed for 943 children at 7 years to determine involvement in special education outcomes: (1) individualized education plan; (2) special education conditions; (3) support services; (4) special education classes; and (5) speech and language services. Logistic regression was used to examine the effect of prenatal cocaine exposure on these outcomes with environmental, maternal, and infant medical variables as covariates, as well as with and without low child IQ. RESULTS Complete data for each analysis model were available for 737 to 916 children. When controlling for covariates including low child IQ, prenatal cocaine exposure had a significant effect on individualized education plan. When low child IQ was not included in the model, prenatal cocaine exposure had a significant effect on support services. Male gender, low birth weight, white race, and low child IQ also predicted individualized education plan. Low birth weight and low child IQ were significant in all models. White race was also significant in speech and language services. Other covariate effects were model specific. When included in the models, low child IQ accounted for more of the variance and changed the significance of other covariates. CONCLUSIONS Prenatal cocaine exposure increased the likelihood of receiving an individualized education plan and support services, with adjustment for covariates. Low birth weight and low child IQ increased the likelihood of all outcomes. The finding that white children were more likely to get an individualized education plan and speech and language services could indicate a greater advantage in getting educational resources for this population.
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Affiliation(s)
- Todd P. Levine
- Department of Pediatrics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Jing Liu
- Department of Pediatrics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Abhik Das
- Research Triangle Institute International, Research Triangle Park, North Carolina
| | - Barry Lester
- Department of Pediatrics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Linda Lagasse
- Department of Pediatrics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Seetha Shankaran
- Department of Pediatrics, Wayne State University School of Medicine, Detroit, Michigan
| | - Henrietta S. Bada
- Department of Pediatrics, University of Kentucky College of Medicine, Lexington, Kentucky
| | - Charles R. Bauer
- Department of Pediatrics, University of Miami School of Medicine, Miami, Florida
| | - Rosemary Higgins
- National Institute of Child Health and Human Development, Bethesda, Maryland
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Pulsifer MB, Butz AM, O'Reilly Foran M, Belcher HME. Prenatal drug exposure: effects on cognitive functioning at 5 years of age. Clin Pediatr (Phila) 2008; 47:58-65. [PMID: 17766581 PMCID: PMC2269702 DOI: 10.1177/0009922807305872] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The goal of this cross-sectional study was to compare cognitive functioning at age 5 years in prenatal drug-exposed children with nondrug-exposed children from a comparable inner-city environment. Children with prenatal drug exposure scored significantly lower on measures of language, school readiness skills, impulse control, and visual attention span/sequencing than controls matched for age and socioeconomic status. Intelligence, visual-motor, manual dexterity, and sustained attention scores were not significantly different between groups. The total sample scored significantly below the normative mean on standardized measures of intelligence, language, school readiness, visual-motor skills, impulse control, and sustained attention, with 40% scoring at least 1 standard deviation below the mean (IQ < 85) on a measure of intelligence. Findings suggest that children with prenatal drug exposure are at increased risk for learning and attention problems and are in need of close developmental surveillance and possible intervention to support school success and improve behavioral outcome.
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Affiliation(s)
- Margaret B Pulsifer
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
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Lewis BA, Kirchner HL, Short EJ, Minnes S, Weishampel P, Satayathum S, Singer LT. Prenatal cocaine and tobacco effects on children's language trajectories. Pediatrics 2007; 120:e78-85. [PMID: 17606552 DOI: 10.1542/peds.2006-2563] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE The objective of this study was to examine the effects of prenatal cocaine and polydrug exposure on language development of preschool children using a prospective longitudinal model, controlling for confounders. METHODS Children who were exposed to cocaine in utero (n = 209) and nonexposed children (n = 189) were followed prospectively at birth and at 1, 2, 4, and 6 years of age and were compared on receptive, expressive, and total language scores across time using random coefficient models, controlling for confounders. RESULTS A significant, stable effect of cocaine exposure on language development was observed over time for all language domains, with cocaine exposure related to poorer language performance. Cigarette exposure was related to lower receptive language scores. Environmental influences on language scores were also observed. Both the cocaine-exposed and nonexposed children declined in language performance over time. CONCLUSIONS Prenatal cocaine exposure has a stable negative effect on language skills during the first 6 years of life. Both cocaine-exposed and nonexposed children showed decreased language growth over time; however, cocaine-exposed children demonstrated linguistic deficits compared with nonexposed peers and did not catch up. Cigarette and environmental influences were also noted.
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Affiliation(s)
- Barbara A Lewis
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA.
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Farah MJ, Shera DM, Savage JH, Betancourt L, Giannetta JM, Brodsky NL, Malmud EK, Hurt H. Childhood poverty: Specific associations with neurocognitive development. Brain Res 2006; 1110:166-74. [PMID: 16879809 DOI: 10.1016/j.brainres.2006.06.072] [Citation(s) in RCA: 394] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2006] [Revised: 06/18/2006] [Accepted: 06/21/2006] [Indexed: 11/26/2022]
Abstract
Growing up in poverty is associated with reduced cognitive achievement as measured by standardized intelligence tests, but little is known about the underlying neurocognitive systems responsible for this effect. We administered a battery of tasks designed to tax-specific neurocognitive systems to healthy low and middle SES children screened for medical history and matched for age, gender and ethnicity. Higher SES was associated with better performance on the tasks, as expected, but the SES disparity was significantly nonuniform across neurocognitive systems. Pronounced differences were found in Left perisylvian/Language and Medial temporal/Memory systems, along with significant differences in Lateral/Prefrontal/Working memory and Anterior cingulate/Cognitive control and smaller, nonsignificant differences in Occipitotemporal/Pattern vision and Parietal/Spatial cognition.
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Affiliation(s)
- Martha J Farah
- Department of Psychology and Center for Cognitive Neuroscience, University of Pennsylvania, PA 19104, USA.
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KOREN GIDEON, NULMAN IRENA, ROVET JOANNE, GREENBAUM RACHEL, LOEBSTEIN MICHAL, EINARSON TOM. Long-Term Neurodevelopmental Risks in Children Exposed in Utero
to Cocaine: The Toronto Adoption Studya. Ann N Y Acad Sci 2006; 846:306-313. [DOI: 10.1111/j.1749-6632.1998.tb09747.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Beeghly M, Martin B, Rose-Jacobs R, Cabral H, Heeren T, Augustyn M, Bellinger D, Frank DA. Prenatal cocaine exposure and children's language functioning at 6 and 9.5 years: moderating effects of child age, birthweight, and gender. J Pediatr Psychol 2006; 31:98-115. [PMID: 15843502 PMCID: PMC2399902 DOI: 10.1093/jpepsy/jsj028] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To evaluate whether prenatal cocaine exposure (PCE), or the interaction between PCE and contextual variables, is associated with children's language at age 6 and 9.5 years, adjusting for relevant covariates. METHODS Analyses were based on 160 low-income, urban children from a prospective study who completed a standardized language assessment at 6 and 9.5 years. PCE was determined using neonatal meconium assays and maternal self-report. RESULTS Significant interaction effects of PCE on language outcomes were found in multivariate longitudinal analyses using generalized estimating equations (GEE). Children with PCE had lower receptive language than unexposed children at 6 but not at 9.5 years, lower expressive language if they had lower birthweight, and lower expressive and total language if they were female. Other risk (e.g., violence exposure) and protective factors (e.g., preschool experience) were related to language outcomes regardless of PCE status. CONCLUSIONS Age, birthweight, and gender moderated the relation between PCE and school-aged children's language.
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Affiliation(s)
- Marjorie Beeghly
- Department of Pediatrics, Harvard Medical School & Children's Hospital, Child Development Unit, Boston, Massachusetts 02215, USA.
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Cone-Wesson B. Prenatal alcohol and cocaine exposure: influences on cognition, speech, language, and hearing. JOURNAL OF COMMUNICATION DISORDERS 2005; 38:279-302. [PMID: 15862811 DOI: 10.1016/j.jcomdis.2005.02.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2004] [Revised: 02/11/2005] [Accepted: 02/11/2005] [Indexed: 05/24/2023]
Abstract
UNLABELLED This paper reviews research on the consequences of prenatal exposure to alcohol and cocaine on children's speech, language, hearing, and cognitive development. The review shows that cognitive impairment, learning disabilities, and behavioral disorders are the central nervous system manifestations of fetal alcohol syndrome (FAS), and cranio-facial abnormalities are also present. Delays in language acquisition, as well as receptive and expressive language deficits, are commonly reported. The cranio-facial abnormalities of FAS, which sometimes include cleft palate, make the child prone to otitis media with effusion and conductive hearing loss. The family environment in which one or both parents is a heavy alcohol user presents challenges to a child with normal intelligence, but may be especially deleterious to the child with mental retardation. Prenatal exposure to cocaine results in subtle cognitive disabilities when measured at 4 years of age. The cognitive effects may be ameliorated by a stimulating and sensitive care-giving environment. A small, deleterious "cocaine-effect" is also seen in speech and language development. The child with prenatal exposure to cocaine may be considered at increased risk for language delay or disorder. There is no evidence that prenatal cocaine exposure by itself is a risk factor for sensorineural hearing impairment, although auditory evoked potentials from the brainstem and cortex suggest some abnormalities in central auditory processing, at least during the newborn period. The strong effect of the home environment for ameliorating the effects of prenatal cocaine-exposure suggests that a family-focused approach for cognitive, language, and social-emotional habilitation would be beneficial to all. LEARNING OUTCOMES The learner will be able to describe the major features of fetal alcohol syndrome and how they relate to speech, language, hearing, and cognitive disorders. The learner will review the literature and determine research needs with respect to language, speech, and hearing among infants and children with fetal alcohol syndrome. Similarly, the learner will distinguish the outcomes of prenatal alcohol-exposure from those of prenatal cocaine-exposure. The learner will summarize the controversy regarding the possible stigmatization of cocaine-exposed infants. The learner will summarize the speech, language, and hearing effects of prenatal cocaine-exposure.
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Affiliation(s)
- Barbara Cone-Wesson
- Speech Language and Hearing Sciences, University of Arizona, P.O. Box 210071, 1131 E. Second Street, Tucson, AZ 85718, USA.
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Morrow CE, Vogel AL, Anthony JC, Ofir AY, Dausa AT, Bandstra ES. Expressive and receptive language functioning in preschool children with prenatal cocaine exposure. J Pediatr Psychol 2004; 29:543-54. [PMID: 15347702 PMCID: PMC2653083 DOI: 10.1093/jpepsy/jsh056] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To estimate the relationship between severity of prenatal cocaine exposure and expressive and receptive language skills in full-term, African American children at age 3 years. METHODS Language was assessed at age 3 using the Clinical Evaluation of Language Fundamentals-Preschool (CELF-P). The sample included 424 children (226 cocaine exposed, 198 non-cocaine exposed) who received preschool language assessments at age 3, drawn from a cohort of 476 children enrolled prospectively at birth. RESULTS Structural equation modeling was used to regress expressive and receptive language as intercorrelated response variables on level of prenatal cocaine exposure, measured by a latent construct including maternal self-report of cocaine use and maternal/infant urine toxicology assays and infant meconium. Results indicated a.168 SD decrease in expressive language functioning for every unit increase in exposure level (95% CI = -.320, -.015; p =.031) after consideration for fetal growth and gestational age as correlated response variables. Receptive language was more modestly related to prenatal cocaine exposure and was not statistically significant. Results for expressive language remained stable with inclusion of the McCarthy general cognitive index as a response variable (expressive language beta = -.173, 95% CI = -.330, -.016; p =.031), and with adjustment for maternal age and prenatal exposures to alcohol, tobacco, and marijuana (expressive language beta = -.175, 95% CI = -.347, -.003; p =.046). Additional child and caregiver environmental variables assessed at age 3 were also evaluated in varying statistical models with similar results. CONCLUSION The evidence from this study supports a gradient relationship between increased level of prenatal cocaine exposure and decreased expressive language functioning in preschool-aged cocaine-exposed children.
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Affiliation(s)
- Connie E Morrow
- Department of Pediatrics, University of Miami School of Medicine, Miami, Florida 33101, USA.
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Lewis BA, Singer LT, Short EJ, Minnes S, Arendt R, Weishampel P, Klein N, Min MO. Four-year language outcomes of children exposed to cocaine in utero. Neurotoxicol Teratol 2004; 26:617-27. [PMID: 15315811 DOI: 10.1016/j.ntt.2004.06.007] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2003] [Revised: 06/09/2004] [Accepted: 06/14/2004] [Indexed: 11/23/2022]
Abstract
A large cohort of children exposed to cocaine in utero (n=189) were followed prospectively from birth to 4 years of age and compared to nonexposed children (n=185) on the Clinical Evaluation of Language Fundamentals-Preschool (CELF-P), a measure of receptive and expressive language abilities. Children exposed to cocaine in utero performed more poorly on the expressive and total language measures than nonexposed children after controlling for confounding variables, including prenatal exposure to alcohol, marijuana, and tobacco, as well as medical and sociodemographic variables. Children exposed to cocaine had more mild receptive language delays than nonexposed children and were less likely to have higher expressive abilities. Also, maternal factors such as language ability, performance IQ, race, and education correlated with child language abilities. Prenatal cigarette and marijuana exposure were related to deficits in specific language skills. Children placed in adoptive or foster care who were cocaine exposed demonstrated superior language skills compared to children exposed to cocaine who remained in biological relative or mother's care. These findings support a cocaine-specific effect on language skills in early childhood that may be modified with an enriched environment.
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Affiliation(s)
- Barbara A Lewis
- Department of Pediatrics, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA.
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Bandstra ES, Vogel AL, Morrow CE, Xue L, Anthony JC. Severity of prenatal cocaine exposure and child language functioning through age seven years: a longitudinal latent growth curve analysis. Subst Use Misuse 2004; 39:25-59. [PMID: 15002943 PMCID: PMC2634602 DOI: 10.1081/ja-120027765] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The current study estimates the longitudinal effects of severity of prenatal cocaine exposure on language functioning in an urban sample of full-term African-American children (200 cocaine-exposed, 176 noncocaine-exposed) through age 7 years. The Miami Prenatal Cocaine Study sample was enrolled prospectively at birth, with documentation of prenatal drug exposure status through maternal interview and toxicology assays of maternal and infant urine and infant meconium. Language functioning was measured at ages 3 and 5 years using the Clinical Evaluation of Language Fundamentals--Preschool (CELF-P) and at age 7 years using the Core Language Domain of the NEPSY: A Developmental Neuropsychological Assessment. Longitudinal latent growth curve analyses were used to examine two components of language functioning, a more stable aptitude for language performance and a time-varying trajectory of language development, across the three time points and their relationship to varying levels of prenatal cocaine exposure. Severity of prenatal cocaine exposure was characterized using a latent construct combining maternal self-report of cocaine use during pregnancy by trimesters and maternal and infant bioassays, allowing all available information to be taken into account. The association between severity of exposure and language functioning was examined within a model including factors for fetal growth, gestational age, and IQ as intercorrelated response variables and child's age, gender, and prenatal alcohol, tobacco, and marijuana exposure as covariates. Results indicated that greater severity of prenatal cocaine exposure was associated with greater deficits within the more stable aptitude for language performance (D = -0.071, 95% CI = -0.133, -0.009; p = 0.026). There was no relationship between severity of prenatal cocaine exposure and the time-varying trajectory of language development. The observed cocaine-associated deficit was independent of multiple alternative suspected sources of variation in language performance, including other potential responses to prenatal cocaine exposure, such as child's intellectual functioning, and other birth and postnatal influences, including language stimulation in the home environment.
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Affiliation(s)
- Emmalee S Bandstra
- Department of Pediatrics, University of Miami School of Medicine, Miami, Florida 33101, USA.
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Morrow CE, Bandstra ES, Anthony JC, Ofir AY, Xue L, Reyes MB. Influence of prenatal cocaine exposure on early language development: longitudinal findings from four months to three years of age. J Dev Behav Pediatr 2003; 24:39-50. [PMID: 12584484 PMCID: PMC2641033 DOI: 10.1097/00004703-200302000-00009] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The influence of prenatal cocaine exposure on children's language functioning was evaluated longitudinally at six time points from 4 months to 3 years of age. The Miami Prenatal Cocaine Study prospectively enrolled 476 full-term African-American infants at birth, categorized as cocaine-exposed (n = 253) or non-cocaine-exposed (n = 223) by maternal self-report and bioassays (maternal/infant urine, meconium). The Bayley Scales of Infant Development, scored using the Kent Scoring Adaptation for language, was administered at 4, 8, 12, 18, and 24 months. The Clinical Evaluation of Language Fundamentals-Preschool was administered at 3 years. In longitudinal analyses using Generalized Estimating Equations, cocaine-exposed children had lower overall language skills than non-cocaine-exposed children (D = -0.151; 95% CI = -0.269, -0.033; p =.012). Longitudinal findings remained stable after evaluation of potential confounding influences including other prenatal substance exposures and sociodemographic factors. Preliminary evidence also indicated possible mediation through an intermediary effect involving cocaine-associated deficits in fetal growth.
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Affiliation(s)
- Connie E Morrow
- University of Miami School of Medicine, Department of Pediatrics, P.O. Box 016960 (M-808), Miami, FL 33101, USA.
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Addis A, Moretti ME, Ahmed Syed F, Einarson TR, Koren G. Fetal effects of cocaine: an updated meta-analysis. Reprod Toxicol 2001; 15:341-69. [PMID: 11489591 DOI: 10.1016/s0890-6238(01)00136-8] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND A very large number of women in the reproductive age group consume cocaine, leading to grave concerns regarding the long term health of millions of children after in utero exposure. The results of controlled studies have been contradictory, leading to confusion, and, possible, misinformation and misperception of teratogenic risk. OBJECTIVE To systematically review available data on pregnancy outcome when the mother consumed cocaine. METHODS A meta-analysis of all epidemiologic studies based on a priori criteria was conducted. Comparisons of adverse events in subgroups of exposed vs. unexposed children were performed. Analyses were based on several exposure groups: mainly cocaine, cocaine plus polydrug, polydrug but no cocaine, and drug free. RESULTS Thirty three studies met our inclusion criteria. For all end points of interest (rates of major malformations, low birth weight, prematurity, placental abruption, premature rupture of membrane [PROM], and mean birth weight, length and head circumference), cocaine-exposed infants had higher risks than children of women not exposed to any drug. However, most of these adverse effects were nullified when cocaine exposed children were compared to children exposed to polydrug but no cocaine. Only the risk of placental abruption and premature rupture of membranes were statistically associated with cocaine use itself. CONCLUSIONS Many of the perinatal adverse effects commonly attributed to cocaine may be caused by the multiple confounders that can occur in a cocaine using mother. Only the risk for placental abruption and PROM could be statistically related to cocaine. For other adverse effects, additional studies will be needed to ensure adequate statistical power.
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Affiliation(s)
- A Addis
- Centro per la Valutazione della Efficacia della Assistenza Sanitaria, Modena, Italy
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Singer LT, Arendt R, Minnes S, Salvator A, Siegel AC, Lewis BA. Developing language skills of cocaine-exposed infants. Pediatrics 2001; 107:1057-64. [PMID: 11331686 DOI: 10.1542/peds.107.5.1057] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE To assess whether there is an association of level of fetal cocaine exposure to developmental precursors of speech-language skills at 1 year of age, after controlling for confounding factors. DESIGN In a prospective, longitudinal, quasi-experimental, matched cohort design, 3 cocaine exposure groups were defined by maternal self-report and infant meconium assay: nonexposure (n = 131), heavier exposure (n = 66), >the 75th percentile for maternal self-report and >the 70th percentile of benzoylecgonine concentration, and all others as lighter exposure (n = 68). At 1 year of age, the Preschool Language Scale-3 was administered by examiners unaware of infant drug status. RESULTS Independent of confounding drug, medical, and environmental factors, more heavily exposed infants had lower auditory comprehension scores than nonexposed infants and lower total language scores than lighter and nonexposed infants. More heavily exposed infants were also more likely to be classified as mildly delayed by total language score than nonexposed infants. There were positive linear relationships between the concentration of benzoylecgonine in meconium and all outcomes and between maternal report of severity of prenatal cocaine use with poorer auditory comprehension indicating a relationship between amount of exposure and poorer outcomes. CONCLUSIONS This study documents significant behavioral teratogenic effects of fetal cocaine exposure on attentional abilities underlying auditory comprehension skills considered to be precursors of receptive language. Pediatricians are in a unique position to monitor early development of cocaine-exposed infants and make timely referrals for intervention.
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Affiliation(s)
- L T Singer
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.
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Abstract
In North America, an increasing number of babies are prenatally exposed to cocaine, yet the implications of cocaine use during pregnancy are not fully understood. The effects of cocaine are exerted primarily by its influence on aminergic receptors in the central and peripheral nervous systems. Developmental, physiological, and behavioral problems in infants and children are likely outcomes of maternal cocaine abuse, but these findings are confounded by concomitant use of other drugs such as marijuana and cocaine and by factors such as time, dosage, and route of cocaine intake. Different screening options exist for cocaine and its metabolites, including sampling of neonatal urine, hair and meconium need to be considered, as do the sensitivity and the ethical implications of such testing. Clinical management of cocaine-exposed infants requires attention to several issues, including: central nervous system irritation, cardiac anomalies, apnea, and feeding difficulties, as well as infant safety and follow-up postdischarge. Early detection and intervention remain the primary objectives of caring for cocaine-exposed infants.
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Affiliation(s)
- D F Askin
- Faculty of Nursing, University of Manitoba, Winnipeg, Manitoba
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Hurt H, Malmud E, Betancourt LM, Brodsky NL, Giannetta JM. A prospective comparison of developmental outcome of children with in utero cocaine exposure and controls using the Battelle Developmental Inventory. J Dev Behav Pediatr 2001; 22:27-34. [PMID: 11265920 DOI: 10.1097/00004703-200102000-00005] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Children with in utero cocaine exposure may be at risk for adverse neurodevelopmental outcome. To evaluate such outcome in young children, we administered the Battelle Developmental Inventory (BDI) to a group of inner-city children with (COC) and without (CON) in utero cocaine exposure at ages 3 and 5 years. Sixty-five COC and 68 CON, similar at age of testing, were evaluated at both time points by examiners masked to child group status. Both groups scored poorly and worsened over time. Although Total BDI raw scores were lower in the COC group than in the CON group at 3 years, this difference was related to postnatal environmental factors, caregiver (p = .022), and home environment (p = .010), not to in utero cocaine exposure (p = .88). At 5 years, the Total BDI score was related to the home environment (p < .001) but not to the caregiver (p = .36) or in utero cocaine exposure (p = .83). We conclude that inner-city children are at risk for adverse developmental outcome regardless of in utero cocaine exposure.
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Affiliation(s)
- H Hurt
- Division of Neonatology, Albert Einstein Medical Center, Philadelphia, Pennsylvania 19141, USA.
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Delaney-Black V, Covington C, Templin T, Kershaw T, Nordstrom-Klee B, Ager J, Clark N, Surendran A, Martier S, Sokol RJ. Expressive language development of children exposed to cocaine prenatally: literature review and report of a prospective cohort study. JOURNAL OF COMMUNICATION DISORDERS 2000; 33:463-481. [PMID: 11141028 DOI: 10.1016/s0021-9924(00)00033-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
It was hypothesized that prenatal exposure to cocaine and other substances would be related to delayed expressive language development. Speech and language data were available for 458 6-year olds (204 were exposed to cocaine). No significant univariate or multivariate differences by cocaine exposure group were observed. Classification and regression tree modeling was then used to identify language variable composites predictive of cocaine exposure status. Meaningful cut points for two language measures were identified and validated. Children with a type token ratio of less than 0.42 and with fewer than 97 word types were classified into a low language group. Low language children (n = 57) were more likely to be cocaine exposed (63.1%), with cocaine-exposed children 2.4 times more likely to be in the low language group compared with control children after adjustment for covariates. Prenatal cigarette, but not alcohol exposure, was also significantly related to expressive language delays.
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Affiliation(s)
- V Delaney-Black
- Department of Pediatrics, School of Medicine, Wayne State University, Detroit, Michigan, USA.
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Schuler ME, Nair P, Black MM, Kettinger L. Mother-infant interaction: effects of a home intervention and ongoing maternal drug use. JOURNAL OF CLINICAL CHILD PSYCHOLOGY 2000; 29:424-31. [PMID: 10969426 PMCID: PMC3143381 DOI: 10.1207/s15374424jccp2903_13] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Examined the effects of a home-based intervention on mother-infant interaction among drug-using women and their infants. At 2 weeks postpartum, mothers and infants were randomly assigned to either an intervention (n = 84) or a control (n = 87) group. Control families received brief monthly tracking visits, and intervention families received weekly visits by trained lay visitors. Mother-infant interaction was evaluated at 6 months through observation of feeding. Although there were no direct effects of the intervention, in the control group, mothers who continued to use drugs were less responsive to their babies than mothers who were drug free. In the intervention group, drug use was not associated with maternal responsiveness. Weekly home-based intervention may be a protective strategy for children of drug-using women because it disrupts the relation between ongoing maternal drug use and low maternal responsiveness.
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Affiliation(s)
- M E Schuler
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore 21201, USA.
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Markowski VP, Cox C, Preston R, Weiss B. Effects of age and gender but not prenatal cocaine on random ratio and delayed spatial alternation responding in rats. Neurotoxicol Teratol 2000; 22:421-8. [PMID: 10840186 DOI: 10.1016/s0892-0362(99)00080-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This investigation employed a longitudinal analysis of rat operant behavior under two different schedules of reinforcement following prenatal exposure to cocaine. Offspring were derived from four maternal exposure groups: 50 mg/kg cocaine, their pair-fed controls, 25 mg/kg cocaine, and freely fed controls. Cocaine was administered via gavage from gestation day 6-20. A maternal fostering procedure was used. Pairs of male and female littermates were assigned to a 7-, 14-, or 21-month cohort and at the appropriate age were trained to respond on one lever in a two-lever operant chamber. Reinforcement was delivered with a series of random ratio (RR) schedules where the RR value was increased across sessions. After RR training, animals were examined with a delayed spatial alternation (DSA) procedure in the same chambers. Male offspring responded at higher rates than females during high-probability RR schedules, whereas advancing age was associated with lower response rates during low-probability RR schedules in both males and females. Prenatal cocaine exposure exerted only limited effects on RR responding during transition and did not affect DSA behavior. The results of this longitudinal analysis suggest that prenatal cocaine does not exert global or far-reaching learning deficits in prenatally exposed rats.
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Affiliation(s)
- V P Markowski
- Department of Psychology, Salem State College, 01970, Salem, MA, USA.
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Wolters PL, Brouwers P, Civitello L, Moss HA. Receptive and expressive language function of children with symptomatic HIV infection and relationship with disease parameters: a longitudinal 24-month follow-up study. AIDS 1997; 11:1135-44. [PMID: 9233461 DOI: 10.1097/00002030-199709000-00009] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVES To longitudinally assess the receptive and expressive language functioning of children with symptomatic HIV disease and to explore the relationship between immune status, computed tomography (CT) brain scan abnormalities, and language dysfunction over time. METHODS Children with symptomatic HIV infection were administered an age-appropriate standardized comprehensive language test and general cognitive measure prior to starting antiretroviral therapy (n = 44) and again after 6 months (n = 29) and 24 months (n = 17). CD4 percentage and CT brain scans were also obtained at each evaluation. RESULTS Expressive language was significantly more impaired than receptive language at the baseline, 6- and 24-month evaluations. No significant changes over time were found in receptive or expressive language from baseline to after 6 months of antiretroviral therapy, but despite treatment, language scores declined significantly between 6 and 24 months. Overall cognitive function, however, remained stable from baseline to 24 months. Age-adjusted CD4 percentage increased significantly over the initial 6 months, then remained stable. Overall CT brain scan severity ratings did not change significantly over 24 months. CONCLUSION Expressive language was consistently more impaired than receptive language over 24 months, further supporting an earlier finding that expressive language was differentially affected by HIV in children with symptomatic disease. Both receptive and expressive language declined significantly after 24 months despite antiretroviral therapy, although overall cognitive function remained stable. Thus, functioning in some domains may be more vulnerable to the effects of HIV and global measures of cognitive ability may mask such differential changes in specific brain functions.
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Affiliation(s)
- P L Wolters
- HIV/AIDS Malignancy Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892-1928, USA
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