Shaun Barcavage, FNP-BC
1.2K posts

Shaun Barcavage, FNP-BC
@ResearcherNP
Nurse Practitioner and researcher. Former democracy and civil society expert. Exploring where medicine, evidence, and lived experience intersect.
New York, NY Katılım Ocak 2010
856 Takip Edilen5.1K Takipçiler

Matrix metalloproteinase-9 (MMP-9) is significantly elevated in the serum of long COVID patients:
pmc.ncbi.nlm.nih.gov/articles/PMC11…
- Microglia release MMP-9 when stimulated by SARS-CoV-2 Spike protein
- "MMP-9 can disrupt the polysaccharide scaffolding of the brain matrix & digest tight junction proteins, thus disrupting neuronal connectivity. MMP-9 can cause vascular inflammation and increase blood brain barrier (BBB) permeability"
(The COVID-19 vacciantion status of the study participants was not taken into account)
(An increase in MMP-9 has been documented in patients with systemic inflammation following COVID-19 vaccination: journals.lww.com/jcma/fulltext/…)
English

Normocomplementemic urticarial vasculitis (UV) following influenza vaccination: dovepress.com/normocomplemen…
"The exact mechanism underlying the development of UV following vaccination remains unclear."
"Accumulation of further cases and research is required to investigate the clinical course and underlying mechanisms of vaccine-induced UV."
English

Secondary T-cell deficiency (particularly affecting CD4 T cells) & chronic spontaneous urticaria after COVID-19 vaccination: jaci-global.org/article/S2772-…
- "The precise mechanism underlying this occurrence remains unknown, although there have been numerous reports highlighting the association between COVID-19 vaccination and autoimmune disorders."
- During his treatment period, he received another COVID-19 vaccine, got COVID-19, and the doctors administered additional vaccines (pneumococcal conjugate vaccine 13-valent, herpes zoster vaccine, pneumococcal polysaccharide vaccine 23-valent, and diphtheria, tetanus, and pertussis vaccine) "to prevent further complications."
English

Otitis media with ANCA-associated vasculitis following COVID-19 mRNA vaccination -> pubmed.ncbi.nlm.nih.gov/39344100/
"The pathogenesis of adverse events following COVID-19 vaccination are still unclear. This report has indicated that ANCA-associated vasculitis can be related to COVID-19 mRNA vaccines. As our knowledge of autoimmune disease developing after COVID-19 vaccination is still in the accumulation phase, it is relevant to amass such case reports and use them for assistance in diagnosis in the future."
English

Type 1 diabetes mellitus caused by COVID-19 mRNA vaccination: A case report and literature review of 17 published cases
-> pmc.ncbi.nlm.nih.gov/articles/PMC11…
"New-onset type 1 DM has been reported after COVID-19 mRNA vaccination. Clinicians should maintain a high index of suspicion and pursue early testing for the same to reduce adverse outcomes and improve long-term prognosis."
English

Guillain Barré Syndrome (GBS) 4 weeks after receiving the COVID-19 vaccine -> pmc.ncbi.nlm.nih.gov/articles/PMC11…
Case of a 66-year-old woman.
She died.
"Despite the treatment, a deterioration of respiratory function led the patient to premature mortality."
English

New onset of neuro-Sjögren's syndrome 9 months after the 3rd COVID-19 vaccine dose -> pmc.ncbi.nlm.nih.gov/articles/PMC11…
Case of a 34-year-old woman.
"This case highlights the need for increased vigilance and research into vaccine-induced autoimmunity."
English

Anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis following the 4th dose of the COVID-19 vaccine -> journals.lww.com/neur/fulltext/…
"... the question should be kept in mind whether subsequent booster doses of COVID-19 vaccines are associated with an increased risk of neuroinflammatory complications."
English

Normocomplementemic urticarial vasculitis (UV) following influenza vaccination: dovepress.com/normocomplemen…
"The exact mechanism underlying the development of UV following vaccination remains unclear."
"Accumulation of further cases and research is required to investigate the clinical course and underlying mechanisms of vaccine-induced UV."
English