https://www.selleckchem.com/products/pluronic-f-68.html To evaluate whether orthostatic hypotension (OH) or supine hypertension (SH) is associated with brain atrophy and white matter hyperintensities (WMH), we analyzed clinical and radiological data from a large multicenter consortium of patients with Parkinson's disease (PD) and dementia with Lewy bodies (DLB). Supine and orthostatic blood pressure and structural magnetic resonance imaging data were extracted from PD and DLB patients evaluated at eight tertiary-referral centers in the USA, Canada, Italy, and Japan. OH was defined as a systolic/diastolic BP fall ≥20/10 mm/Hg within 3 minutes of standing from the supine position (severe, ≥30/15 mm/Hg) and SH as a BP ≥140/90 mmHg with normal sitting blood pressure. Diagnosis-, age-, sex-, and disease duration-adjusted differences in global and regional cerebral atrophy, as well as WMH were appraised using validated semi-quantitative rating scales. A total of 384 patients (310 with PD, 74 with DLB) met eligibility criteria, of whom 44.3% (n= 170) had OH, including 24.7% (n= 42) with severe OH, and 41.7% (n= 71) with SH. OH was associated with global brain atrophy (p=0.004) and regional atrophy involving the anterior-temporal (p= 0.001) and medio-temporal (p=0.001) regions, greater in severe vs. non-severe OH (p=0.001). The WMH burden was similar in those with and without OH (p=0.49). SH was not associated with brain atrophy (p=0.59) or WMH (p=0.72). OH, but not SH, was associated with cerebral atrophy in Lewy body disorders, with prominent temporal region involvement. Neither OH nor SH were associated with WMH. OH, but not SH, was associated with cerebral atrophy in Lewy body disorders, with prominent temporal region involvement. Neither OH nor SH were associated with WMH. To explore the spectrum of skeletal muscle and nerve pathology of patients who died following SARS-CoV-2 infection and assess for direct viral invasion of these tissues. Psoas muscle and femoral nerv