Biomedical subjects

Robert Asarnow

Publications and source records attributed to Robert Asarnow.

4 recordsLinked to original sources

PubMed2005

Abnormal development of the anterior cingulate in childhood-onset schizophrenia: a preliminary quantitative MRI study.

The anterior cingulate is a key component of neural networks subserving attention and emotion regulation, functions often impaired in patients with psychosis. The study aimed to examine anterior cingulate volumes and sulcal morphology in a group of patients with childhood-onset schizophrenia (COS) compared with controls. Brain magnetic resonance imaging (MRI) scans were obtained in 13 COS and 18 matched control children, ages 6-17 years. Volume measures for the anterior cingulate gyrus (ACG) were obtained through manual labeling. A determination of cingulate sulcal pattern (single or double) was made for each hemisphere. The COS group had a reduced leftward skew of the double cingulate sulcal pattern, and absence of the normal left>right ACG volume asymmetry. The right ACG was larger in the COS than in controls. The schizophrenic children showed decreases in all ACG volumes with age, while the controls showed increases or no change. The data suggest that significant cingulate abnormalities may result from deviations in progressive neurodevelopmental processes, beginning before birth and continuing through childhood and adolescence, in persons who develop schizophrenia. These structural differences may relate to the well-described cognitive deficits these children display, and to the cardinal symptoms of schizophrenia.

Adolescent↗

PubMed2004

1H MRSI evidence of metabolic abnormalities in childhood-onset schizophrenia.

In adult schizophrenia, magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) have revealed volumetric and metabolic defects in multiple brain regions, among them the anterior cingulate, frontal cortex, striatum, thalamus, parietal cortex, and frontal and parietal white matter. This study used proton magnetic resonance spectroscopic imaging ((1)H MRSI) to identify potential metabolic abnormalities in these regions in childhood-onset schizophrenia. (1)H MRSI was acquired at 1.5 T and 272 ms echo time in 11 children and adolescents with schizophrenia (aged 7-18 years; seven boys, four girls; all but two medicated) and 20 age-matched healthy controls (10 boys, 10 girls). Absolute levels of N-acetyl compounds (NAA), creatine plus phosphocreatine (Cr), and choline compounds (Cho) were compared among groups in each region. In schizophrenic patients relative to controls, Cr was 14.3% higher in superior anterior cingulate (mean of left and right hemispheres). Cho was higher in superior anterior cingulate (30.3%), frontal cortex (13.3%), and caudate head (13.5%). In the thalamus, there was also a diagnosis-by-gender interaction, whereby NAA was lower in patients for male but not for female subjects. Elevated Cr suggests abnormal local cell-energy demand and elevated Cho is consistent with a prior proposal that patients with early age-of-onset schizophrenia exhibit phospholipid membrane disturbances. Low NAA may reflect diminished neuronal integrity.

Adolescent↗

PubMed2003

The development of acute post-traumatic stress disorder after orofacial injury: a prospective study in a large urban hospital.

PURPOSE: Psychologic distress is a common outcome among trauma survivors. This report examines both the development and predictors of acute post-traumatic stress disorder (PTSD) symptoms in a sample of US inner-city orofacial trauma survivors seeking treatment in a publicly funded hospital. PATIENTS AND METHODS: Baseline data were collected from 336 patients seeking urgent care for an oral injury (mandibular or midfacial fracture). Participants were predominantly unemployed, unmarried, African American or Hispanic men in their 30s. One-month follow-up assessments of PTSD symptoms were conducted on the available 84% of the sample. RESULTS: Absolute levels of PTSD symptoms were high at 1 month; 25% of the sample appeared to meet diagnostic criteria for acute PTSD, based on a self-report of symptoms. Variables associated with self-reports of higher rates of PTSD symptoms included older age, being female, prior psychologic disturbance as reflected in lifetime and current mental health and social service need and use, exposure to and distress at a prior trauma as well as overall high rates of stressful life events in the past year, injury pain, psychologic distress at hospital discharge, and unmet social support needs during the recovery phase. CONCLUSIONS: A substantial subsample of these traumatized medical patients had negative psychologic outcomes at 1 month. Results underscore the potential use of screening survivors of orofacial injury at urban trauma centers for PTSD and developing systems of care that facilitate referral to appropriate psychologic treatment.

Adolescent↗

PubMed2002

Developmental outcome with and without successful intervention.

A review of the literature on the developmental outcome of medically and surgically treated symptomatic infantile spasms (IS) indicates that poor seizure control, severe mental retardation, and marked behavioral disorders are found at long-term outcome of symptomatic IS. The 2-year outcome findings of the UCLA Pediatric Epilepsy Surgery Research Group in children with symptomatic infantile spasms and in children with early onset intractable symptomatic epilepsy other than IS (non-IS) demonstrate impaired development of cognition, language, and social communication despite improved seizure control. The social communication deficits of these children are similar to those found in autistic children. Finally, the underlying pathology of the resected brain, rather than ongoing seizures and seizure type, plays an important role in development of the remaining brain tissue and the outcome of early onset symptomatic IS and non-IS.

Child Behavior↗