The study of brain venous drainage has gained attention due to its hypothesized link with various neurological conditions. Intracranial and neck venous flow rate may be estimated using cardiac-gated cine phase-contrast (PC)-MRI. Although previous studies showed that breathing influences the neck's venous flow, this aspect could not be studied using the conventional segmented PC-MRI since it reconstructs a single cardiac cycle. The advent of real-time PC-MRI has overcome these limitations. Using this technique, we measured the internal jugular veins and superior sagittal sinus flow rates in a group of 16 healthy subjects (12 females, median age of 23 years). Comparing forced-breathing and free-breathing, the average flow rate decreased and the respiratory modulation increased. The flow rate decrement may be due to a vasoreactive response to deep breathing. The respiratory modulation increment is due to the thoracic pump's greater effect during forced breathing compared to free breathing. These results showed that the breathing mode influences the average blood flow and its pulsations. Since effective drainage is fundamental for brain health, rehabilitative studies might use the current setup to investigate if respiratory exercises positively affect clinical variables and venous drainage.
Fronto-parietal regions are involved in cognitive processes that are commonly affected in Parkinson's disease (PD). The aims of this study were to investigate cerebral blood flow (CBF) and gray matter (GM) volume within the regions belonging to the fronto-parietal circuit in people with PD (pwPD) without dementia, and to assess their association with cognitive performance. Twenty-seven pwPD without dementia (mean [SD] age = 67.4 [8.1] years, 20 males, mean [SD] Montreal Cognitive Assessment, MoCA score = 24.2 [2.9], median [IQR] Hoehn and Yahr scale = 1.5 [1-2]) and twenty-six age- and sex-matched healthy controls (HC) were scanned with arterial spin labeling (ASL) and T1-weighted magnetic resonance imaging (MRI) sequences to investigate CBF and GM volume, respectively. The cognitive performance of the enrolled pwPD was assessed with MoCA, Trail Making Test (TMT, part A, B, B-A), phonemic fluency and semantic fluency tests. The scores were adjusted for age and education. After standard preprocessing, CBF differences between pwPD and HC were tested with a voxel-wise approach. Voxel-based morphometry was used to compare pwPD and HC in terms of GM volume. Both voxel-wise comparisons between pwPD and HC were restricted to regions of the fronto-parietal circuit. The following additional voxel-wise analyses were performed within regions showing either perfusion or GM volume alterations: (1) correlation with neuropsychological test scores; (2) subgroup comparison after median split on each neuropsychological test score. Family-wise error-corrected (FWE) p-values lower than 0.05 were considered significant. Significant hypoperfusion was identified in the left inferior parietal lobule (IPL, ppeak = 0.037) and in the bilateral superior parietal lobule (SPL, left hemisphere: ppeak = 0.037; right hemisphere: ppeak = 0.049) of pwPD when compared to HC. No significant GM atrophy was observed. Local hypoperfusion did not correlate with any neuropsychological test scores. However, significantly lower CBF was observed in the left SPL and IPL of the pwPD subgroup who performed poorer on TMT part A in comparison with the pwPD subgroup that performed better. Perfusion alterations may occur in parietal regions of pwPD without dementia, and may be associated with lower visuomotor skills. Parietal CBF may be considered as a suitable early biomarker for longitudinal studies investigating cognitive decline in PD.
Movement Disorders Clinical Practice-is an online-only journal committed to publishing high quality peer reviewed articles related to clinical aspects of movement disorders which broadly include phenomenology (interesting case/case series/rarities), investigative (for e.g.genetics, imaging), translational (phenotype-genotype or other) and treatment aspects (clinical guidelines, diagnostic and treatment algorithms).In addition the journal will encourage the publication of educative material (solicited and unsolicited reviews), clinical-pathological cases, drug trials results and task force reports related to the field of movement disorders.MDCP encourages the submission of multimedia material accompanying all types of articles.
Background: Multiple sclerosis (MS) studies suggest greater cardiovascular disease burden and disturbances in the cholesterol pathways1,2 The potential impact of oxidized cholesterol molecules (oxysterols) on MS is emerging (Figure 1).3
Objective: To determine the relationship between multiple oxysterol molecules and atherosclerosis burden in MS patients.
Materials and methods: A total of 99 MS patients (61 relapsing-remitting MS (RRMS) and 38 progressive MS (PMS)) patients and 38 healthy controls (HCs) underwent magnetic resonance angiography (MRA) and the cross-sectional area (CSA) of the common carotid artery (CCA) was determined at three different levels before the bifurcation (C7, C6 and C5). Additionally, an echo-color Doppler ultrasound was performed and measures of blood flow velocities were derived. Blood samples acquired at the time of the imaging examinations were analyzed and 24-, 25-, 27-hydroxycholesterol (24HC, 25HC, 27HC) and 7-ketocholesterol (7KC) were quantified in ng/mL.
Results: In the MS patients, higher levels of 24HC were significantly associated with smaller CCA CSA measured at all three cervical levels (r=-0.201, p=0.046; r=-0.228, p=0.023, and r=-0.215, p=0.032, for C7, C6 and C5, respectively). These associations were driven by the RRMS group only (r=-0.407, p=0.002 for C7; r=-0.414, p=0.002, for C6; and r=-0.368, p=0.006 for C5). No associations were seen in the HCs. Despite adjusting for the significant age effect (B=0.445, p=0.004), higher 24HC levels were independently associated with smaller CCA CSA (B=-0.20, p=0.045). 24HC was additionally associated with greater time-averaged and peak diastolic CCA velocities. RRMS patients treated with potent anti-inflammatory therapies had lower oxysterol levels (p=0.019). RRMS patients in the lower 24HC quartiles had significantly higher expanded disability status scale (EDSS) scores when compared to RRMS patients in the higher two 24HC quartiles (2.5 (IQR 1.9-3.1) vs 2.0 (1.5-2.5), p=0.038).
Conclusions: Greater 24HC levels are associated with smaller CSA CCA and greater flow velocities in RRMS patients. The higher inflammatory activity in RRMS patients may contribute to the production of highly reactive oxysterols and worsen the atherosclerotic burden in the MS population. Potent anti-inflammatory medications can significantly decrease oxysterol levels.
PRISM (Pictorial Representation of Illness and Self Measure) is a nonverbal visualization instrument. The authors chose to use this tool to avoid the limitation of the other tests for the assessment of quality of life by using interview methods that depend on the cognitive and cultural level of the patient. The aim of the study was to assess the impact on the quality of life of different types of chronic wounds using the PRISM test.The PRISM test was administered by the same medical student to each patient visiting the dermatology department for a routine visit and medication.The PRISM test was administered to 77 patients with chronic cutaneous ulcers referred to the Dermatology Department of the Spedali Civili of Brescia, Italy.The authors analyzed the "Self-llness-Separation"' (SIS) value, which resulted from the PRISM test, and related it to sex, age, and ulcer etiology.Considering all categories, the mean SIS was 9.58 cm; a different perception of the disease between the sexes was noted and also in the subgroups based on the ulcer's different etiology. In addition, the age of the affected patients influenced the SIS value.PRISM is an easy and sensitive instrument to record information about the patient's expectations and suffering in order to improve the overall physician-patient relationship.
<b><i>Background:</i></b> Hyperlipidemia is associated with worse clinical and radiological outcomes in persons with multiple sclerosis (PwMS) and studies show greater MS extracranial arterial vessel pathology. <b><i>Objective:</i></b> The aim of this study was to determine the effect of lipid profile measures on extracranial arterial vessels in PwMS and healthy controls (HCs). <b><i>Methods:</i></b> Non-contrast magnetic resonance angiography was conducted on 104 PwMS and 41 HCs. The cross-sectional area (CSA) of the common carotid artery (CCA) and vertebral artery (VA) was measured using a semi-automated edge-detection/contouring method at cervical levels C4-C7. The lipid profile was obtained at the time of the scan. Repeated measures analyses adjusted for age, gender, and body mass index were used. <b><i>Results:</i></b> In PwMS, age was associated with CCA CSA (<i>F</i> = 7.65, η<sup>2</sup> = 0.083, <i>p</i> = 0.007) and lipoprotein(a) [Lp(a)] with VA CSA (<i>F</i> = 13.4, η<sup>2</sup> = 0.13, <i>p</i> < 0.001). These associations were not present in HCs. PwMS with Lp(a) ≥30 and ≥50 mg/dL, and within the highest Lp(a) quartile had significantly larger CCA and VA when compared to those with lower Lp(a) threshold values. Total cholesterol and low- and high-density lipoprotein cholesterol were not associated with CCA or VA CSA. <b><i>Conclusions:</i></b> Lp(a) levels are associated with CSA of major extracranial arterial vessels in PwMS but not in HCs. The clinical and pathological significance of these associations, if any, remains unknown.
Background: Parkinson’s disease (PD) is a progressive neurodegenerative disorder that is mainly characterized by movement dysfunction. Neurovascular unit (NVU) disruption has been proposed to be involved in the disease, but its role in PD neurodegenerative mechanisms is still unclear. The aim of this study was to investigate cerebral blood flow (CBF) and cerebrovascular reactivity (CVR) within the regions belonging to the motor network, in patients with mild to moderate stages of PD. Methods: Twenty-eight PD patients (66.6 ± 8.6 years, 22 males, median [interquartile range, IQR] Hoehn & Yahr = 1.5 [1–1.9]) and 32 age- and sex-matched healthy controls (HCs) were scanned with arterial spin labeling (ASL) magnetic resonance imaging (MRI) for CBF assessment. ASL MRI was also acquired in hypercapnic conditions to induce vasodilation and subsequently allow for CVR measurement in a subgroup of 13 PD patients and 13 HCs. Median CBF and CVR were extracted from cortical and subcortical regions belonging to the motor network and compared between PD patients and HCs. In addition, the correlation between these parameters and the severity of PD motor symptoms [quantified with Unified Parkinson’s Disease Rating Scale part III (UPDRS III)] was assessed. The false discovery rate (FDR) method was used to correct for multiple comparisons. Results: No significant differences in terms of CBF and CVR were found between PD patients and HCs. Positive significant correlations were observed between CBF and UPDRS III within the precentral gyrus, postcentral gyrus, supplementary motor area, striatum, pallidum, thalamus, red nucleus, and substantia nigra (pFDR < 0.05). Conversely, significant negative correlation between CVR and UPDRS III was found in the corpus striatum (pFDR < 0.05). Conclusion: CBF and CVR assessment provides information about NVU integrity in an indirect and noninvasive way. Our findings support the hypothesis of NVU involvement at the mild to moderate stages of PD, suggesting that CBF and CVR within the motor network might be used as either diagnostic or prognostic markers for PD.
Background: Minimally invasive surgery could improve cosmetic outcomes and reduce the risks of surgical injury with less postoperative pain and a quicker patient’s discharge. Recently, transvaginal natural orifice transluminal endoscopic surgery (vNOTES) has been introduced in urogynecology with exciting results. Evidence Acquisition: After PROSPERO registration (n°CRD42023406815), we performed a comprehensive literature search on Pubmed, Embase, and Cochrane CENTRAL, including peer-reviewed studies evaluating transvaginal natural orifice transluminal endoscopic surgery. No limits on time or type of study were applied. Evidence synthesis: Overall, 12 manuscripts were included in the analysis. Seven studies evaluated uterosacral ligament suspension, four studies evaluated sacral colpopexy, three evaluated sacrospinous ligament suspension, and one study evaluated lateral suspension. Overall success rates were high (>90%); however, definitions of success were heterogeneous. In terms of complication, most of the studies reported low-grade complications (Clavien–Dindo I and II); only two patients needed mesh removal because of mesh exposure. The risk of bias of the trials was rated in the medium to high-risk category. Conclusions: The present review highlights important initial results for vNOTES. Future randomized clinical trials are needed to better define its role in the management of urogynecological procedures.
Background and Objectives . The hypothesized link between extracranial venous abnormalities and some neurological disorders awoke interest in the investigation of the internal jugular veins (IJVs). However, different IJV cross-sectional area (CSA) values are currently reported in literature. In this study, we introduced a semiautomatic method to measure and normalize the CSA and the degree of circularity (Circ) of IJVs along their whole length. Methods . Thirty-six healthy subjects (31.22 ± 9.29 years) were recruited and the 2D time-of-flight magnetic resonance venography was acquired with a 1.5 T Siemens scanner. The IJV were segmented on an axial slice, the contours were propagated in 3D. Then, IJV CSA and Circ were computed between the first and the seventh cervical levels (C1–C7) and normalized among subjects. Inter- and intrarater repeatability were assessed. Results . IJV CSA and Circ were significantly different among cervical levels (p<0.001). A trend for side difference was observed for CSA (larger right IJV,p=0.06), but not for Circ (p=0.5). Excellent inter- and intrarater repeatability was obtained for all the measures. Conclusion . This study proposed a reliable semiautomatic method able to measure the IJV area and shape along C1–C7, and suitable for defining the normality thresholds for future clinical studies.
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