Dietary docosahexaenoic acid alleviates autistic-like behaviors resulting from maternal immune activation in mice

The prevalence of autism spectrum disorders over the last several decades has risen at an alarming rate. Factors such as broadened clinical definitions and increased parental age only partially account for this precipitous increase, suggesting that recent changes in environmental factors may also be responsible. One such factor could be the dramatic decrease in consumption of anti-inflammatory dietary omega-3 (n-3) polyunsaturated fatty acids (PUFAs) relative to the amount of pro-inflammatory omega-6 (n-6) PUFAs and saturated fats in the Western diet. Docosahexaenoic acid (DHA) is the principle n-3 PUFA found in neural tissue and is important for optimal brain development, especially during late gestation when DHA rapidly and preferentially accumulates in the brain. In this study, we tested whether supplementation of a low n-3 PUFA diet with DHA throughout development could improve measures related to autism in a mouse model of maternal immune activation. We found that dietary DHA protected offspring from the deleterious effects of gestational exposure to the viral mimetic polyriboinosinic-polyribocytidilic acid on behavioral measures of autism and subsequent adulthood immune system reactivity. These data suggest that elevated dietary levels of DHA, especially during pregnancy and nursing, may help protect normal neurodevelopment from the potentially adverse consequences of environmental insults like maternal infection

Cannabinoid type 2 receptors in dopamine neurons inhibits psychomotor behaviors, alters anxiety, depression and alcohol preference

Cannabinoid CB2 receptors (CB2Rs) are expressed in mouse brain dopamine (DA) neurons and are involved in several DA-related disorders. However, the cell type-specific mechanisms are unclear since the CB2R gene knockout mice are constitutive gene knockout. Therefore, we generated Cnr2-floxed mice that were crossed with DAT-Cre mice, in which Cre- recombinase expression is under dopamine transporter gene (DAT) promoter control to ablate Cnr2 gene in midbrain DA neurons of DAT-Cnr2 conditional knockout (cKO) mice. Using a novel sensitive RNAscope in situ hybridization, we detected CB2R mRNA expression in VTA DA neurons in wildtype and DAT-Cnr2 cKO heterozygous but not in the homozygous DAT-Cnr2 cKO mice. Here we report that the deletion of CB2Rs in dopamine neurons enhances motor activities, modulates anxiety and depression-like behaviors and reduces the rewarding properties of alcohol. Our data reveals that CB2Rs are involved in the tetrad assay induced by cannabinoids which had been associated with CB1R agonism. GWAS studies indicates that the CNR2 gene is associated with Parkinson’s disease and substance use disorders. These results suggest that CB2Rs in dopaminergic neurons may play important roles in the modulation of psychomotor behaviors, anxiety, depression, and pain sensation and in the rewarding effects of alcohol and cocaine

Patient-focused internet interventions in reproductive medicine: a scoping review.

Item does not contain fulltextBACKGROUND: The Internet has revolutionized fertility care since it became a popular source of information and support for infertile patients in the last decade. The aim of this scoping review is to map (i) the main categories of patient-focused Internet interventions within fertility care, (ii) the detailed composition of the interventions and (iii) how these interventions were evaluated. METHODS: A literature search used various 'Internet' and 'Infertility' search terms to identify relevant studies published up to 1 September 2011. The selected studies had to include patients facing infertility and using an infertility-related Internet intervention. We charted data regarding categories of interventions, components of interventions and evaluation methodology. We categorized the stages of research using the UK's Medical Research Council framework for evaluating complex interventions. RESULTS: We included 20 studies and identified 3 educational interventions, 2 self-help interventions, 1 human-supported therapeutic intervention, 9 online support groups and 2 counselling services. Information provision, support and mental health promotion were common aims. Few interactive online components were present in the online programmes. Three studies were in the pilot phase and 17 were in the evaluation phase. CONCLUSIONS: Several categories of patient-focused Internet-based interventions in fertility care are primarily applied to provide support and education and promote mental health. The interventions could be improved by using more interactive and dynamic elements as their key components. Finally, more emphasis on methodological standards for complex interventions is needed to produce more rigorous evaluations. This review shows where further development or research into patient-focused Internet interventions in fertility-care practice may be warranted