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Lipoprotein apheresis is an important therapeutic option in homozygous familial hypercholesterolemia, progressive atherosclerosis, or when depletion of lipoprotein(a) is indicated. click here It is generally regarded as safe, but drops in platelet counts as well as sporadic episodes of thrombocytopenia have been reported. We assessed the influence of platelet desialylation, which may be induced by endogenous or pathogen-derived neuraminidases, on platelet adhesion to polyacrylate-based adsorbents for whole blood lipoprotein apheresis.
Medical grade platelet concentrates were incubated with neuraminidase in vitro and were circulated over adsorbent columns downscaled from clinical application.
Cleavage of terminal sialic residues resulted in platelet activation with significantly elevated expression of platelet factor 4 (PF4) and in enhanced platelet adhesion to the adsorbent, accompanied by a pronounced drop in platelet counts in the column flow-through.
Alterations in endogenous neuraminidase activity or exogenous (pathogen-derived) neuraminidase may trigger enhanced platelet adhesion in whole blood lipoprotein apheresis.
Alterations in endogenous neuraminidase activity or exogenous (pathogen-derived) neuraminidase may trigger enhanced platelet adhesion in whole blood lipoprotein apheresis.Background The association between dietary patterns and cardiorespiratory fitness (CRF) is not well established. Objective We sought to investigate association between a posteriori dietary pattern and CRF in middle-aged adults. Design Adults (n = 276), aged 20-74 years, who were residents of Tehran, Iran were recruited. Diet was assessed by using a validated 168-item semi-quantitative food frequency questionnaire. Principal component analysis was used to derive dietary patterns. Socio-economic status, anthropometric measures, body composition, and blood pressure were recorded. CRF was assessed by using a graded exercise treadmill test. Analysis of variance and linear regression models were used to discern the association between dietary patterns and CRF. Results Higher scores of the healthy dietary pattern had no association with VO2max (p = 0.13). After controlling for potential confounders, VO2max was positively associated across tertiles of healthy dietary patterns (p less then 0.001). Higher adherence to the "mixed" dietary pattern was inversely related to VO2max (p less then 0.01). After adjusting for confounders, the significant association disappeared (p = 0.14). Higher scores of the "Western" dietary pattern was not associated with VO2max (p = 0.06). However, after controlling for potential confounders, VO2max was positively associated with the "Western" dietary pattern (p = 0.01). A positive linear association between the "healthy" dietary pattern and CRF for the total sample (R2 = 0.02; p less then 0.01) were presented. Conclusions Overall, our findings suggest that higher adherence to a "healthy" and "Western" dietary pattern was positively associated with CRF. However, further studies are required to examine and clarify the causal relationship between dietary patterns and CRF.Fluoxetine is commonly prescribed in adolescent depression, but the neural mechanisms underlying its action remain poorly understood. Here, we used resting-state functional magnetic resonance imaging to investigate the effects of a single dose of fluoxetine vs. placebo in adolescents with major depressive disorder. In contrast with previous studies in adults that have demonstrated an acute effect of antidepressants on activity within the default mode network, a single dose of fluoxetine did not alter activity in this network in adolescent depression. There were unexpected group activity differences in the motor network, which should be clarified in future research.
This case report describes myasthenia gravis-like symptoms after treatment with a programmed cell death 1 inhibitor, pembrolizumab, the treatment modalities utilized, and associated patient outcomes.
A 76-year old male treated with pembrolizumab for palliative therapy for metastatic melanoma presented with increasing weakness, neck pain, diplopia in the left eye, abducens palsy, periorbital edema, and decreased appetite. The patient was diagnosed with acetylcholine receptor antibody (AChR) negative myasthenia gravis. The patient was started on prednisone 1 mg/kg/day, followed by pyridostigmine 60 mg by mouth 3 times a day, and IVIg for 5 days. Due to minor improvements in myasthenia gravis symptoms, 5 cycles of plasmapheresis were ordered. The patient was successfully treated for aspiration pneumonia after cardiopulmonary arrest. On day 28, the patient was diagnosed with ventilator associated pneumonia and received appropriate therapy. Due to ICU agitation and delirium, VAP, and long duration of treatment, the patient requested withdrawal of care and passed.
Programmed cell death inhibitors, such as pembrolizumab, can provide great benefit to patients but can also be associated with rare but serious adverse events. With new reports of MG after use, providers should continually weigh the benefits versus harm in using these products and monitor patients closely for such adverse events.
Programmed cell death inhibitors, such as pembrolizumab, can provide great benefit to patients but can also be associated with rare but serious adverse events. With new reports of MG after use, providers should continually weigh the benefits versus harm in using these products and monitor patients closely for such adverse events.
The evaluation of the effects of age at cochlear implantation on balance in children.
Cross-sectional study.
Twenty children who received their cochlear implants (CI) before the chronologic age of 48 months (Early CI Group), and 20 children who received their CI at 48 months chronologic age or later (Late CI Group).
All children underwent Tandem Romberg (TR) test, Single-Leg stance (SLS) test, Pediatric Clinical Test of Sensory Interaction for Balance (P-CTSIB), Pediatric Balance scale (PBS) and Timed Up and Go (TUG) test.
The scores of TR, SLS and P-CTSIB and TUG tests and PBS were recorded. Mann Whitney
test and Independent-samples
-test were used to compare data between groups.
TR (eyes opened-EO), SLS (EO), PBS, and TUG scores and incidence in dizziness symptoms did not show significant differences between the groups (
> 0.05). Duration of TR and SLS tests (eyes closed-EC), P-CTSIB-positions 5, and 6 were significantly longer in the Early CI Group than the Late implanted group(
< 0.
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