Encoding for several memory types requires neural changes and the activity of distinct regions across the brain. These areas receive broad projections originating in nuclei located in the brainstem which are capable of modulating the activity of a particular area. The histaminergic system is one of the major modulatory systems, and it regulates basic homeostatic and higher functions including arousal, circadian, and feeding rhythms, and cognition. There is now evidence that histamine can modulate learning in different types of behavioral tasks, but the exact course of modulation and its mechanisms are controversial. In the present paper we review the involvement of the histaminergic system and the effects histaminergic receptor agonists/antagonists have on the performance of tasks associated with the main memory types as well as evidence provided by studies with knockout models. Thus, we aim to summarize the possible effects histamine has on modulation of circuits involved in memory formation.

Background: This study aimed to conduct a narrative review approaching the effects of exclusive breastfeeding on neuropsychomotor development. The goal was to provide evidence-based knowledge to inform healthcare practices and policies and promote optimized infant feeding strategies. Methods: Our study reviewed the relevant literature from May and June 2024, covering the publication period between 2013 and 2024. The PubMed database was utilized and searched for articles using keywords such as “Brain”, “Growth”, “Development”, and “Breastfeeding”, employing Boolean operators such as “AND”, “OR”, and “NOT.” Results: Our search initially screened 15,412 studies, resulting in 600 articles. Eleven studies met our inclusion criteria and provided relevant information on the topic. Several studies have shown that exclusive breastfeeding and its duration are beneficial for neural development. Research suggests that breastfeeding improves brain architecture, white matter development, and cognitive performance. Additionally, studies indicate that the mother’s intake of omega-3 fatty acids can enhance infant brain development, and specific micronutrients in breast milk, such as myo-inositol, may contribute to neural connectivity. Some findings also suggest that the child’s sex may play a role in how breast milk benefits the brain. Furthermore, there is evidence of the strong influence of epigenetic compounds on the neurodevelopmental benefits of exclusive breastfeeding. Conclusions: This narrative review revealed findings that indicate breast milk has a positive impact on brain development. This emphasizes that breast milk has a positive impact on brain development. It underscores the importance of conducting additional research to understand how breastfeeding specifically influences neurodevelopment.

OBJECTIVE: to evaluate the risk of dysphagia and its relationship with the stage of Alzheimer's Disease, as well as the relationship between the risk of dysphagia and nutritional status and caloric intake in elderly people with Alzheimer's disease.METHODS: the sample consisted of 30 subjects of both genders with probable Alzheimer's disease. The stage of the disease, nutritional status, energy intake, and risk of dysphagia were assessed.RESULTS: it was found that increased risk of dysphagia is associated with the advance in the stages of Alzheimer's disease and that even patients in the early stages of disease have a slight risk of developing dysphagia. No association was found between nutritional status and the risk of dysphagia. High levels of inadequate intake of micronutrients were also verified in the patients.CONCLUSION: an association between dysphagia and the development of Alzheimer's disease was found. The results indicate the need to monitor the presence of dysphagia and the micronutrient intake in patients with Alzheimer's disease.

Sarcopenic obesity (SO), the co-occurrence of sarcopenia and obesity, is associated with functional loss, frailty, and incapacity in older adults. Recently, SO was associated with reduced cognitive performance in adults. However, no SO studies have been done with older adults with Alzheimer’s disease (AD). Objective: The objective of this study was to verify the occurrence of SO and associated factors in 43 older adults with AD. Methods: We applied the Mini-Mental State Examination (MMSE) and Clinical Dementia Rating (CDR). SO was verified by using dual-emission X-ray absorptiometry. Results: We found five women with SO. Women had higher body fat and lower muscle mass compared with men. There was a significant relationship between body fat and cognitive performance only in men (r=0.65; p75 years had better cognitive performance compared with non-obese men aged 75 years (p=0.033). Conclusions: Women with AD had higher body fat and lower muscle mass than men. SO occurs in older women with AD. Men with higher body fat showed better cognitive performance, independent of age and education.

Background Major depressive disorder is a difficult-to-treat psychological disorder. Approximately 30% of patients with major depressive disorder do not respond to conventional therapies; thus, the efficacy of alternative therapies for treating major depressive disorder, such as neurofeedback, a non-invasive neuromodulation method used in the treatment of psychiatric diseases, must be investigated. Objective We aimed to evaluate the efficacy of neurofeedback in minimizing and treating major depressive disorder and its application as a substitute to or an adjuvant with conventional