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The novel SARS-CoV-2 virus and resulting COVID-19 global pandemic emerged in 2019 and continues into 2022. While mortality from COVID-19 is slowly declining, a subset of patients have developed chronic, debilitating symptoms following complete recovery from acute infection with COVID-19. Termed as post-acute sequelae of SARS-CoV-2 syndrome (PASC), the underlying pathophysiology of PASC is still not well understood. Given the similarity between the clinical phenotypes of PASC and postural orthostatic tachycardia syndrome (POTS), it has been postulated that dysautonomia may play a role in the pathophysiology of PASC. However, there have been only a few studies that have examined autonomic function in PASC. In this retrospective study, we performed an analysis of autonomic nerve function testing in PASC patients and compared the results with those of POTS patients and healthy controls. Our results suggest that a significant number of PASC patients have abnormal autonomic function tests, and their clinical features are indistinguishable from POTS.
Millions of people are suffering from Long COVID or post-acute sequelae of COVID-19 (PASC). Several biological factors have emerged as potential drivers of PASC pathology. Some individuals with PASC may not fully clear the coronavirus SARS-CoV-2 after acute infection. Instead, replicating virus and/or viral RNA—potentially capable of being translated to produce viral proteins—persist in tissue as a ‘reservoir’. This reservoir could modulate host immune responses or release viral proteins into the circulation. Here we review studies that have identified SARS-CoV-2 RNA/protein or immune responses indicative of a SARS-CoV-2 reservoir in PASC samples. Mechanisms by which a SARS-CoV-2 reservoir may contribute to PASC pathology, including coagulation, microbiome and neuroimmune abnormalities, are delineated. We identify research priorities to guide the further study of a SARS-CoV-2 reservoir in PASC, with the goal that clinical trials of antivirals or other therapeutics with potential to clear a SARS-CoV-2 reservoir are accelerated. Proal and colleagues review the evidence for long-term persistence of coronavirus SARS-CoV-2 in tissues of infected individuals and discuss how this viral reservoir may contribute to the pathogenesis of post-acute sequelae of COVID-19 (PASC).
Un petit plat rapide et facile aux parfums asiatiques. Je l'ai servi avec du riz basmati, un accompagnement parfait. Ingrédients pour 4...
Objective To investigate neurologic manifestations of post-acute sequelae of SARS-CoV-2 infection (Neuro-PASC) in post-hospitalization Neuro-PASC (PNP) and non-hospitalized Neuro-PASC (NNP) patients...
Although often regarded as a protean illness with myriad clinical and imaging manifestations, neurosarcoidosis typically presents as recognizable syndromes that can be approached in a rational, systematic fashion. Understanding of neurosarcoidosis has ...
Brain Scans Brain "fog" and cognitive issues have often resulted in brain scans being done of CFS patients. A brain scan does not usually help with treatment; it simply suggests why some symptoms occur. The typical report conclusion is hypoperfusion, meaning too little blood getting to the brain tissue. CFS patients have frequently had several…
Understanding the etiology of infectious or chronic inflammatory diseases, when used in conjunction with clinical information and other laboratory testing Research studies in which an assessment of cytokine responses is needed
The cognitive neurologist at the University of California, San Francisco discussed recently published data on the presence of cognitive post-acute sequelae of COVID-19 and the need to legitimize these conditions.
Research shows for the first time an association between the gut microbiota and the brain regions involved in the processing of sensory information from their bodies. This suggests that signals generated by the brain can influence the composition of microbes residing in the intestine and that the chemicals in the gut can shape the human brain's structure. Also, the researchers gained insight into the connections among childhood trauma, brain development and gut microbiome composition.
An estimated 65 million people globally suffer from post-acute sequelae of COVID-19 (PASC), with many experiencing cardiovascular symptoms (PASC-CVS) like chest pain and heart palpitations. This study examines the role of chronic inflammation in PASC-CVS, particularly in individuals with symptoms persisting over a year after infection. Blood samples from three groups—recovered individuals, those with prolonged PASC-CVS and SARS-CoV-2-negative individuals—revealed that those with PASC-CVS had a blood signature linked to inflammation. Trace-level pro-inflammatory cytokines were detected in the plasma from donors with PASC-CVS 18 months post infection using nanotechnology. Importantly, these trace-level cytokines affected the function of primary human cardiomyocytes. Plasma proteomics also demonstrated higher levels of complement and coagulation proteins in the plasma from patients with PASC-CVS. This study highlights chronic inflammation’s role in the symptoms of PASC-CVS. Sinclair et al. explore the contribution of chronic inflammation to cardiovascular symptoms associated with post-acute sequelae of SARS-CoV-2 infection (PASC-CVS). The authors identify trace levels of inflammatory cytokines in individuals with PASC-CVS that impair the function of cardiomyocytes derived from induced pluripotent stem cells.
No, #LongCovid (PASC) is real! Now, a new, cellular level study has also proved that! The study finds that altered mitochondrial respiration in peripheral blood mononuclear cells of LongCovid patients may be contributing to the etiology of PASC. 1/
Indigenous arts leader Rhoda Roberts discusses with 73-year old award-winning Aboriginal writer and historian Bruce Pasc...
We read with interest the recent report by Liu et al 1 describing faecal microbiome differences with postacute sequelae of SARS-CoV-2 (PASC), commonly referred to as ‘Long-COVID’. We have previously reported elevated levels of SARS-CoV-2-specific T cells with PASC compared with resolved COVID-19 (RC; no lingering symptoms at the time of sample collection) that correlated with increased levels of the inflammatory marker IL-6, suggesting that elevated inflammation in PASC may be related to immune response to residual virus.2 Although several studies have reported gut microbiome differences during acute COVID-19,3 PASC has received less attention. We, thus, sought to characterise gut microbiome differences in PASC versus RC using faecal samples from our study2 and to relate these differences to inflammation. The faecal microbiome was evaluated using 16S rRNA gene sequencing. Plasma levels of inflammatory markers IL-6 and C reactive protein (CRP) were measured with ELISA (see online supplemental methods). Cohort information is in table 1. IL-6 and CRP were elevated with PASC (figure 1A). Gut microbiome composition did not significantly differ between the PASC and RC cohorts (PERMANOVA; p=0.087; figure 1B), but did correlate with IL-6 and CRP levels (Adonis; IL-6 p=0.03; CRP p=0.01). IL-6 and CRP also correlated with PC1 from a principal coordinates analysis (figure 1C,D), suggesting a relationship between microbiome composition and inflammation in PASC. Using SELBAL,4 which identifies ratios …
A new study published on the preprint server medRxiv* determines how endothelial activation and inflammation contribute to the formation of microclots in PASC.
Buenos días amigas! Felices Pascuas de Resurrección! Espero que esten muy bien. Hoy les tengo una tarjeta que hice para celebrar la Pasc...
Multi-disciplinary collaborative consensus guidance statement on the assessment and treatment of autonomic dysfunction in patients with post-acute sequelae of SARS-CoV-2 infection (PASC)
Vous nous l'avez beaucoup demandé elle est là : la vidéo réaction avec @Michou !On a regardé le pire épisode de SOS : Ma famille a besoin d'aide d'après Pasc...
