Analysis from a population cohort in Israel found that a third booster dose of the BNT162b2 mRNA vaccine in mothers before or during pregnancy was associated with greater protection against COVID-19 hospitalization in their infants compared to two doses.
Woher kommt die Muskelschwäche bei Post Covid? Um dieser Frage nachzugehen haben wir (@ChariteBerlin und @MDC_Berlin) in einer Studie Muskelproben von 11 Patient*innen untersucht.
"Preprint" (ohne Begutachtung) auf https://www.medrxiv.org/content/10.1101/2023.02.15.23285584v1 – hier zusammengefasst: … (1/4)
Jahrelang vegetiert er unter Schmerzen in einem dunklen Raum, mit der Krankheit ME/CFS findet Faraz Fallahi keinen Arzt. Er rechnet mit dem Tod – als plötzlich Hoffnung naht. Die einzigartige Geschichte eines Heilversuchs.
The German language has quite a few animalistic verbs:
fuchsen ("to fox") = to annoy
hechten ("to pike") = to dive
reihern ("to heron") = to puke
dackeln ("to dachshund") = to walk slowly
aalen ("to eel") = to bask
vögeln ("to bird") = to have sex
einigeln ("to hedgehog in") = to curl up
hamstern ("to hamster") = to hoard
schlängeln ("to snake") = to wriggle
stieren ("to bull") = to goggle
unken ("to toad") = to gripe, augur doom
tigern ("to tiger") - to walk tigerishly
Animaljoy our language!
Background Muscle fatigue and pain are key symptoms of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). Although the pathophysiology is not yet fully understood, there is ample evidence for hypoperfusion which may result in electrolyte imbalance and sodium overload in muscles. Therefore, the aim of this study was to assess levels of sodium content in muscles of patients with ME/CFS and to compare these to healthy controls. Methods Six female patients with ME/CFS and six age, BMI and sex matched controls underwent 23Na-MRI of the left lower leg using a clinical 3T MR scanner before and after 3 min of plantar flexion exercise. Sodium reference phantoms with solutions of 10, 20, 30 and 40 mmol/L NaCl were used for quantification. Muscle sodium content over 40 min was measured using a dedicated plugin in the open-source DICOM viewer Horos. Handgrip strength was measured and correlated with sodium content. Results Baseline tissue sodium content was higher in all 5 lower leg muscle compartments in ME/CFS compared to controls. Within the anterior extensor muscle compartment, the highest difference in baseline muscle sodium content between ME/CFS and controls was found (mean ± SD; 12.20 ± 1.66 mM in ME/CFS versus 9.38 ± 0.71 mM in controls, p = 0.0034). Directly after exercise, tissue sodium content increased in gastrocnemius and triceps surae muscles with + 30% in ME/CFS (p = 0.0005) and + 24% in controls (p = 0.0007) in the medial gastrocnemius muscle but not in the extensor muscles which were not exercised. Compared to baseline, the increase of sodium content in medial gastrocnemius muscle was stronger in ME/CFS than in controls with + 30% versus + 17% to baseline at 12 min (p = 0.0326) and + 29% versus + 16% to baseline at 15 min (p = 0.0265). Patients had reduced average handgrip strength which was associated with increased average muscle tissue sodium content (p = 0.0319, R2 = 0.3832). Conclusion Muscle sodium content before and after exercise was higher in ME/CFS than in healthy controls. Furthermore, our findings indicate an inverse correlation between muscle sodium content and handgrip strength. These findings provide evidence that sodium overload may play a role in the pathophysiology of ME/CFS and may allow for potential therapeutic targeting.
Emanuel Wyler
Jens Clasen
Frau Nora 🦋
Enno Park
