In Patients Over 50 Years, Increased Age Is Associated With Decreased Odds of Documented Loss of Consciousness After a Concussion

The impact of sphingosine-1-phosphate receptor modulators on COVID-19 and SARS-CoV-2 vaccination

BACKGROUND

Sphingosine-one phosphate receptor (S1PR) modulation inhibits S1PR1-mediated lymphocyte migration, lesion formation and positively-impacts on active multiple sclerosis (MS). These S1PR modulatory drugs have different: European Union use restrictions, pharmacokinetics, metabolic profiles and S1PR receptor affinities that may impact MS-management. Importantly, these confer useful properties in dealing with COVID-19, anti-viral drug responses and generating SARS-CoV-2 vaccine responses.

OBJECTIVE

To examine the biology and emerging data that potentially underpins immunity to the SARS-CoV-2 virus following natural infection and vaccination and determine how this impinges on the use of current sphingosine-one-phosphate modulators used in the treatment of MS.

METHODS

A literature review was performed, and data on infection, vaccination responses; S1PR distribution and functional activity was extracted from regulatory and academic information within the public domain.

OBSERVATIONS

Most COVID-19 related information relates to the use of fingolimod. This indicates that continuous S1PR1, S1PR3, S1PR4 and S1PR5 modulation is not associated with a worse prognosis following SARS-CoV-2 infection. Whilst fingolimod use is associated with blunted seroconversion and reduced peripheral T-cell vaccine responses, it appears that people on siponimod, ozanimod and ponesimod exhibit stronger vaccine-responses, which could be related notably to a limited impact on S1PR4 activity. Whilst it is thought that S1PR3 controls B cell function in addition to actions by S1PR1 and S1PR2, this may be species-related effect in rodents that is not yet substantiated in humans, as seen with bradycardia issues. Blunted antibody responses can be related to actions on B and T-cell subsets, germinal centre function and innate-immune biology. Although S1P1R-related functions are seeming central to control of MS and the generation of a fully functional vaccination response; the relative lack of influence on S1PR4-mediated actions on dendritic cells may increase the rate of vaccine-induced seroconversion with the newer generation of S1PR modulators and improve the risk-benefit balance IMPLICATIONS: Although fingolimod is a useful asset in controlling MS, recently-approved S1PR modulators may have beneficial biology related to pharmacokinetics, metabolism and more-restricted targeting that make it easier to generate infection-control and effective anti-viral responses to SARS-COV-2 and other pathogens. Further studies are warranted.

[Medical liability and criminal law in emergency medicine]

Medical liability is booming. Malpractice can entail both civil and criminal consequences. Besides financial and custodial penalties, at worst the license to practice medicine can be withdrawn. Physicians owe their patients a treatment according to current standards. Furthermore, physicians are obliged to fulfill their duty of care. Nevertheless, the patient's right of self-determination must not be violated. Especially in emergency situations, physicians have to focus on taking protective measures in order to avert further dangers to the health of patients. This article analyses common pitfalls in emergency medical treatment with respect to the legal aspects.

[Medical liability and criminal law in emergency medicine]

Medical liability is booming. Malpractice can entail both civil and criminal consequences. Besides financial and custodial penalties, at worst the license to practice medicine can be withdrawn. Physicians owe their patients a treatment according to current standards. Furthermore, physicians are obliged to fulfill their duty of care. Nevertheless, the patient's right of self-determination must not be violated. Especially in emergency situations, physicians have to focus on taking protective measures in order to avert further dangers to the health of patients. This article analyses common pitfalls in emergency medical treatment with respect to the legal aspects.