Abstract

Background: DBS is an established treatment option in refractory dystonia, and motor outcomes have been extensively evaluated instead of the usually neglected NMS (e.g., pain). Objective: To describe the non-motor symptoms (NMS) after Deep Brain Stimulation (DBS) surgery for refractory generalized inherited/idiopathic dystonia in a prospective study. Design and setting: A prospective study that evaluated patients in the Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo. Methods: This study evaluated patients before and one year after DBS surgery. We applied the following scales: Burke-Fahn-Marsden Rating Scale (BFMRS), Hospital Anxiety and Depression Scale (HADS), Non-Motor Symptoms Scale for Parkinson’s Disease (NMSS-PD), Parkinson’s Disease Questionnaire-8 (PDQ8) Brief Pain Inventory (BPI), Neuropathic Pain Symptom Inventory (NPSI) and McGill pain questionnaire. Results: 11 patients (38.35 ± 11.30 years) underwent surgery (36.3% women). Motor BFMRS subscore was 64.36 ± 22.94 at baseline and 33.55 ± 17.44 after surgery (p=0.003, 47.9% improvement on motor symptoms). HADS scores remained unchanged. NMSS-PD had a significant change after DBS, from 70.91 ± 59.07 to 37.18 ± 55.05 (p=0.013, 47,5% improvement). Seven patients reported pain before DBS surgery, and after one year, four patients reported chronic pain (i.e., pain improved by 42.28%). BPI’s severity and interference scores were 4.61 ± 2.84 and 4.12 ± 2.67, respectively before surgery, and 2.79 ± 2.31 (0.00–6.25) and 1.12 ± 1.32 (0.00–3.00) after DBS (p=0.043 and p=0.028). NPSI total score was 15.29 ± 13.94 before DBS, and reduced to 2.29 ± 2.98 afterward (p=0.028). McGill’s total score was 9.00 ± 3.32 before DBS, achieving 2.71 ± 2.93 after surgery (p=0.028), mostly driven by the sensory sub-score. Conclusions: We found that DBS improves NMS in dystonia, including chronic pain, anxiety, gastrointestinal symptoms, besides the already established improvement in QoL and motor symptoms.

Highlights

  • Capsaicin is able to induce mast cell degranulation, an event probably related to the pathophysiology of a migraine attack

  • Objectives: The present review study aimed to address the mechanisms of action of capsaicin and other chemical inducers in mast cell degranulation and an interaction of nerves and events that happen in the dura mater with the activation of mast cells

  • The analyses showed significantly higher frequency of the genotype VV in those who had depression, compared with the allele A

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Summary

Introduction

Capsaicin is able to induce mast cell degranulation, an event probably related to the pathophysiology of a migraine attack. Neuroinfections are pathologies that affect the CNS, for example, we have Murcomycosis, a progressive infection caused by opportunistic fungi of the order Mucorales, with high frequency in Immunodepressed patients, Diabetes Mellitus (DM) is the main underlying pathology associated with the development of Rhinocerebral Murcomycosis, which represents 50% of the cases, with a mortality rate of 70% (Sidrim, 2012, p.168). The COVID-19 pandemic has been alarming the world since its first outbreak in December 2019 In this scenario, the presence of aggravating factors such as the elevation of the D-dimer and the reduction of the angiotensin-converting enzyme 2 (ACE2) during the clinical course of the disease, collaborated in the appearance of thromboembolic events derived from inflammatory processes and extensive intravascular coagulation, contributing to the emergence of diseases such as Hemorrhagic Stroke (ICH), leading the patient to have a worse clinical prognosis and a consecutive worsening of their health. Despite being classically associated with this etiology, the finding may be present in other diseases, especially infiltrative ones

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