Circulating microRNAs in Huntington's disease: Emerging mediators in metabolic impairment.

Huntington's disease (HD) is a hereditary neurodegenerative disease, with peripheral consequences that negatively contribute to quality of life. Circulating microRNAs (cmiRNAs) are being explored for their roles in intercellular communication and gene expression regulation, which allows gaining insight into the regulation of crosstalk between neuronal and peripheral tissues. Here, we explore the cmiRNA profile of plasma samples from fifteen symptomatic patients, with 40-45 CAG repeats in the HTT gene, and seven healthy matched controls. Isolated miRNAs from plasma samples were run against human miRNome panels, which have sequences for 752 human mature miRNAs. We found that 168 cmiRNAs are altered in symptomatic patients. Considering Bonferroni's correction, miR-877-5p, miR-223-3p, miR-223-5p, miR-30d-5p, miR-128, miR-22-5p, miR-222-3p, miR-338-3p, miR-130b-3p, miR-425-5p, miR-628-3p, miR-361-5p, miR-942 are significantly increased in HD patients as compared with controls. Moreover, after patient's organization according to approved HD scales, miR-122-5p is significantly decreased in HD patients with Unified Huntington's Disease Rating Scale >24, whereas an increase in miR-100-5p levels and a decrease in miR-641 and miR-330-3p levels were recorded when patients were rearranged by Total Functional Capacity. These results suggest that cmiRNA profile could be further modified by disease progression, making cmiRNAs useful as monitoring biomarkers. Analysis of target genes indicated a general overexpression of cmiRNAs implicated in metabolism regulation. Profiling cmiRNA of HD subjects opens the possibility of personalized therapies for different groups of HD patients, based on disease modifiers: regulation of altered pathways might contribute to not only alleviate disease symptoms, but also influence HD progression.

Sociodemographic characteristics of a cohort of patients with chronic migraine from a health district in Asturias.

INTRODUCTION: Chronic migraine (CM), with or without medication overuse, is a common condition in the general population. It has traditionally been assumed that suffering CM has an impact on a patient's socio-occupational and educational level. Our goal was to analyse these characteristics in a cohort of patients with CM and compare them to the general population. MATERIAL AND METHODS: We used a telephone interview and an ad hoc questionnaire to record and analyse the sociodemographic characteristics of 150 patients with a diagnosis of CM according to the criteria of the International Headache Classification. Results were compared to those obtained by the Third Health Survey of Asturias, conducted in 2012. RESULTS: Of the 150 patients, 142 were women (95%). Married patients accounted for 59.3% of the total interviewees, while 22% were single, 12.6% divorced, and 6% were widowed. Regarding educational level, we found that 73% of our patients had completed secondary or higher education and 25% had completed only primary education. Sixty per cent of these patients are occupationally active, while the rest are not actively employed. Overall, these figures do not differ from those published by the Third Health Survey of Asturias. DISCUSSION: The classic idea that CM has a negative impact on patients' educational, personal, and occupational situations was not confirmed in our series. In fact, most patients with CM reported a medium-high educational level and a good socio-occupational status. However, since our series includes only CM patients attended in a specialist clinic, our results are not necessarily applicable to all patients with CM.