Intraoperative smile in a multiple sclerosis patient with medication-refractory tremor.

Deep brain stimulation has been utilized to improve disease symptoms in patients with Parkinson's disease, dystonia, essential tremor, and other neuropsychiatric syndromes such as depression and obsessive compulsive disorder. Deep brain stimulation has also been observed to improve tremor for select patients with multiple sclerosis. During intraoperative stimulation in these multiple sclerosis patients, researchers have observed a wide spectrum of motor and sensory phenomena, but no stimulation-induced emotional responses have been reported. We detailed intraoperative smiling associated with stimulation of the ventralis oralis anterior/ventralis oralis posterior border region of the left thalamus.  A single patient with medication-resistant multiple sclerosis tremor experienced smiling, laughing, and subjective euphoria during intraoperative stimulation of the left thalamus. Specifically, during intraoperative stimulation of the left thalamic ventralis oralis anterior border, the patient developed a contralateral smile which progressed to a bilateral smile and was accompanied by a feeling of subjective happiness. The smile habituated in approximately 60 seconds and it was reproducible on a repeat stimulation. The patient could subjectively feel the facial movement, and, at higher voltages, the movement was described as a pulling sensation. Stimulation of the anterior ventralis oralis anterior border of the left thalamus in an multiple sclerosis patient produced a unilateral smile that rapidly developed into a bilateral smile accompanied by euphoria. There were presumed capsular side effects at higher voltages. The exact mechanism by which stimulation of the thalamus produced a smile and mood elevation is unknown, but we speculate that the smile could be induced by stimulation of corticobulbar fibers arising from the caudal cingulate motor area connecting the contralateral facial nerve nucleus.

Identifying Subgroups of Youth Suicide Decedents Based on Clinical Profiles of Psychiatric and Medical Diagnoses: A Latent Class Analysis.

PURPOSE: To identify risk subgroups of youth suicide decedents using demographic and clinical psychiatric and medical diagnostic profiles to inform tailored youth suicide prevention efforts. METHODS: This study linked Ohio Medicaid and death certificate data for Medicaid enrolled youth aged 8-25 years who died by suicide between January 1, 2010, and December 31, 2020 (N = 511). Latent class analysis was used to identify distinct clinical risk subgroups. RESULTS: Three latent classes were identified. Internalizing problems were common across all classes, but especially prevalent in class 1, the High Internalizing + Multiple Comorbidities group (n = 152, 30%). A prior history of suicidal behavior was confined to class 1 decedents, who were otherwise characterized by substance misuse, and multiple psychiatric and medical comorbidities. Class 2 decedents, the Internalizing + Externalizing group (n = 176, 34%), were more often younger, male, Black, and unlikely to have a history of substance misuse. Decedents in class 3, the Internalizing + Substance Misuse group (n = 183, 36%), were more often older and likely to have a history of substance misuse, but unlikely to exhibit other externalizing problems. DISCUSSION: Internalizing psychopathology is particularly common among youth who die by suicide, with comorbid externalizing psychopathology, substance misuse, and medical problems contributing to youth suicide risk. Because less than a third of youth who die by suicide have a prior history of recognized suicidal thinking or behavior, universal screening for youth suicide risk should be considered, particularly in younger children, and efforts to integrate suicide prevention in traditional health care settings should be prioritized.

Variability in clinical phenotypes of heterozygous and homozygous cases of Parkin-related Parkinson's disease.

Parkin mutations are a common cause of early-onset Parkinson's disease. To study the clinical features and treatment responses of patients with homozygous or heterozygous Parkin mutations, we performed a retrospective chart review in six early-onset parkinsonism patients with pathogenic Parkin mutations. The clinical phenotypes observed in this cohort, all drawn from different families, were variable. All patients had a slowly progressive form of parkinsonism that responded well to dopaminergic therapy with the exception of one advanced case. Homozygous patients had an earlier age at disease onset than heterozygous patients. Two of our patients underwent bilateral deep brain stimulation (DBS) of the subthalamic nucleus or globus pallidus leading to a sustained positive response. Our observations support an earlier age of onset for homozygous cases and possible beneficial effects of DBS in Parkin-related parkinsonism.

Maternal depression and child telomere length: The role of genetic sensitivity.

BACKGROUND: The stress of a mother's depression may increasingly tax psychobiological systems that help children with self-regulation, increasing children's allostatic load over time. Some evidence supports children exposed to maternal depression tend to have shorter telomeres and tend to have more somatic and psychological problems. Children having one or more A1 alleles of dopamine receptor 2 (DRD2, rs1800497), tend to have greater sensitivity to maternal depression and could experience more adverse child outcomes that contribute to greater allostatic load. METHODS: Using the Future Families and Child Wellbeing dataset, secondary-data analyses were used to test the effect of repeated exposure to maternal depression during early childhood on children's telomere length during middle childhood moderated by children's DRD2 genotype (N = 2884). RESULTS: Greater maternal depression was not significantly associated with shorter child telomere length and this association was not moderated by DRD2 genotypes while controlling for factors associated with child telomere length. IMPLICATIONS: The effect of maternal depression on children's TL may not be significant in populations from diverse racial-ethnic and family backgrounds during middle childhood. These findings could help further our current understanding psychobiological systems affected by maternal depression that result in adverse child outcomes. LIMITATIONS: Even though this study used a relatively large and diverse sample, replication of DRD2 moderation in even larger samples is an important next step.

Cross-lagged effects between parent depression and child internalizing problems.

The bidirectional associations between maternal depression and child psychological functioning are generally well-established. Paternal depression may also share some bidirectional associations with child psychological functioning, but there is limited research in this area. It is unclear how or when one family member's anxiety or depression might affect another family member's mental health. The present study tested the bidirectional associations between maternal depression, paternal depression, and children's internalizing problems of anxiety and depression from early childhood into mid-adolescence. The present study also included unmarried parents, who are often underrepresented in research. Secondary analyses were performed using a subset of data from the Fragile Families and Child Wellbeing (FFCW) study, beginning when children were 3-years-old and ending when children were 15-years-old. Families (N = 4,873) were from racially and economically diverse backgrounds-nearly half of the mothers were non-Hispanic Black and 65% of mothers had a high school degree or further education. We found evidence of bidirectional associations between maternal depression and child internalizing problems across early childhood and into adolescence. We found no bidirectional associations between paternal and maternal depression or between paternal depression and children's internalizing problems. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

The protective roles of ethnic identity, social support, and coping on depression in low-income parents: A test of the adaptation to poverty-related stress model.

OBJECTIVE: This study tested the Adaptation to Poverty-Related Stress (APRS) model's proposed relationships between poverty-related stress (PRS), ethnic identity affirmation (EI), social support, engagement coping, and depression in a racial/ethnically diverse sample of low-income parents. METHOD: Path analysis was used to test the APRS model in a sample of 602 parents living at or below 200% of the federal poverty line (50% male, mean age = 32.55 years, SD = 8.78, 34.8% White). Multigroup path analysis tested moderation by gender and race/ethnicity. RESULTS: Path analysis revealed that PRS was indirectly associated with higher depressive symptoms through less social support and less use of engagement coping operating in parallel and sequentially in a three-path mediated sequence. Conversely, EI was indirectly associated with lower depressive symptoms through greater social support and greater use of engagement coping operating in parallel and sequentially. However, PRS remained a direct predictor of higher depressive symptoms. Moderation by gender and race/ethnicity was not found. CONCLUSION: Overall, the findings provide empirical support for the APRS model. This study suggests that clinical and preventive interventions targeting depression in low-income parents could benefit from focusing on improving low-income parent's use of engagement coping and perceived social support. Ethnic identity is a promising target as it to protects against PRS' negative impact on coping and social support. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Myelin protein zero exists as dimers and tetramers in native membranes of Xenopus laevis peripheral nerve.

Protein zero (P0) glycoprotein is the major integral membrane protein of the peripheral nervous system myelin in higher vertebrates. Previous findings indicate the formation of tetrameric assemblies from studies on isolated P0. To determine whether in intact myelin the P0 exists as oligomers, we isolated myelin from sciatic nerve of Xenopus laevis and analyzed it using sodium dodecyl sulfate and urea gel electrophoresis. P0 oligomerization was confirmed using Western blotting, which showed monomeric P0 at approximately 30 kDa and oligomeric P0 at approximately 60 kDa and approximately 120 kDa. A variety of denaturing conditions failed to convert any appreciable amount of oligomer to monomer. Instead, the addition of these denaturants further increased the amount of dimer and tetramer while decreasing the amount of monomer. Native gels showed dimeric P0 without the appearance of monomer or tetramer, suggesting that dimeric P0, the most prominent form of the protein, is the most stable and likely occurs in the native myelin membrane array.

Fugu ESTs: new resources for transcription analysis and genome annotation.

The draft Fugu rubripes genome was released in 2002, at which time relatively few cDNAs were available to aid in the annotation of genes. The data presented here describe the sequencing and analysis of 24,398 expressed sequence tags (ESTs) generated from 15 different adult and juvenile Fugu tissues, 74% of which matched protein database entries. Analysis of the EST data compared with the Fugu genome data predicts that approximately 10,116 gene tags have been generated, covering almost one-third of Fugu predicted genes. This represents a remarkable economy of effort. Comparison with the Washington University zebrafish EST assemblies indicates strong conservation within fish species, but significant differences remain. This potentially represents divergence of sequence in the 5' terminal exons and UTRs between these two fish species, although clearly, complete EST data sets are not available for either species. This project provides new Fugu resources, and the analysis adds significant weight to the argument that EST programs remain an essential resource for genome exploitation and annotation. This is particularly timely with the increasing availability of draft genome sequence from different organisms and the mounting emphasis on gene function and regulation.