https://www.nature.com/articles/s41582-021-00518-4.pdf

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https://www.pnas.org/content/pnas/118/17/e2018995118.full.pdf

 

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Abstract

This study aims to explore the psychosocial and behavioral problems of children and adolescents in the early stage of reopening schools. In this national cross-sectional study, a total of 11072 students from China were naturally divided into two groups based on their schooling status: reopened schools (RS) and home schooling (HS) group. The psychosocial and behavioral functioning were measured by Achenbach Child Behaviour Checklist (CBCL) and compared in these two groups. Multivariable logistic regression analyses were conducted to explore the independent predictors associated with the psychosocial and behavioral problems. Our results showed that the students in the RS group had more adverse behaviors than that of HS group. The RS group had the higher rates of parent-offspring conflict, prolonged homework time, increased sedentary time and sleep problems (all p < 0.001). When separate analyses were conducted in boys and girls, the RS group had the higher scores for (1) overall behavioral problems (p = 0.02 and p = 0.01), internalizing (p = 0.02 and p = 0.02) and externalizing (p = 0.02 and p = 0.004) behaviors in the 6-11 age group; (2) externalizing (p = 0.049 and p = 0.006) behaviors in the 12-16 age group. Multivariable regression showed parent-offspring conflict and increased sedentary time were the most common risk factors, while physical activity and number of close friends were protective factors for behavior problems in RS students (p < 0.01 or 0.05). The present study revealed that students’ psychosocial and behavioral problems increased in the early stage of schools reopened unexpectedly. These findings suggest that close attention must be paid and holistic strategies employed in the school reopening process of post-COVID-19 period.

Wang L et al: Psychosocial and behavioral problems of children and adolescents in the early stage of reopening schools after the COVID-19 pandemic: a national cross-sectional study in China. Transl. Psychiatry 11(1):342(2021); doi: 10.1038/s41398-021-01462-z.

https://pubmed.ncbi.nlm.nih.gov/34083509/

 

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In Parkinson disease (PD), pathological processes and neurodegeneration begin long before the cardinal motor symptoms develop and enable clinical diagnosis. In this prodromal phase, risk and prodromal markers can be used to identify individuals who are likely to develop PD, as in the recently updated International Parkinson and Movement Disorders Society research criteria for prodromal PD. However, increasing evidence suggests that clinical and prodromal PD are heterogeneous, and can be classified into subtypes with different clinical manifestations, pathomechanisms and patterns of spatial and temporal progression in the CNS and PNS. Genetic, pathological and imaging markers, as well as motor and non-motor symptoms, might define prodromal subtypes of PD. Moreover, concomitant pathology or other factors, including amyloid-β and tau pathology, age and environmental factors, can cause variability in prodromal PD. Patients with REM sleep behaviour disorder (RBD) exhibit distinct patterns of α-synuclein pathology propagation and might indicate a body-first subtype rather than a brain-first subtype. Identification of prodromal PD subtypes and a full understanding of variability at this stage of the disease is crucial for early and accurate diagnosis and for targeting of neuroprotective interventions to ensure efficacy.

Key points
• Heterogeneity of Parkinson disease (PD) starts in the prodromal phase.
• Pathological spread, imaging markers and the onset and progression of motor and
non-motor symptoms are variable in prodromal PD.
• The variability in clinical phenotype suggests that subtypes of prodromal PD can be defined.
• Possible subtypes of prodromal PD are REM sleep behaviour disorder subtypes, brain-first and body-first subtypes, genetic subtypes and biological subtypes.
• Variability in prodromal PD must result from different pathophysiological mechanisms; defining prodromal subtypes is the first step to identifying the biological difference.

Berg, D., Borghammer, P., Fereshtehnejad, SM. et al. Prodromal Parkinson disease subtypes — key to understanding heterogeneity. Nat Rev Neurol (2021). https://doi.org/10.1038/s41582-021-00486-9

https://www.nature.com/articles/s41582-021-00486-9

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Abstract

Neuropsychiatric sequalae to coronavirus disease 2019 (COVID-19) infection are beginning to emerge, like previous Spanish influenza and severe acute respiratory syndrome episodes. Streptococcal infection in paediatric patients causing obsessive compulsive disorder (PANDAS) is another recent example of an infection-based psychiatric disorder. Inflammation associated with neuropsychiatric disorders has been previously reported but there is no standard clinical management approach established. Part of the reason is that it is unclear what factors determine the specific neuronal vulnerability and the efficacy of anti-inflammatory treatment in neuroinflammation. The emerging COVID-19 data suggested that in the acute stage, widespread neuronal damage appears to be the result of abnormal and overactive immune responses and cytokine storm is associated with poor prognosis. It is still too early to know if there are long-term-specific neuronal or brain regional damages associated with COVID-19, resulting in distinct neuropsychiatric disorders. In several major psychiatric disorders where neuroinflammation is present, patients with abnormal inflammatory markers may also experience less than favourable response or treatment resistance when standard treatment is used alone. Evidence regarding the benefits of co-administered anti-inflammatory agents such as COX-2 inhibitor is encouraging in selected patients though may not benefit others. Disease-modifying therapies are increasingly being applied to neuropsychiatric diseases characterised by abnormal or hyperreactive immune responses. Adjunct anti-inflammatory treatment may benefit selected patients and is definitely an important component of clinical management in the presence of neuroinflammation.

Tang, S., Helmeste, D., & Leonard, B. (2021). Inflammatory neuropsychiatric disorders and COVID-19 neuroinflammation. Acta Neuropsychiatrica, 1-13. doi:10.1017/neu.2021.13

https://www.doi.org/10.1017/neu.2021.13

 

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https://www.pnas.org/content/pnas/114/30/E6107.full.pdf

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https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2779759

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https://www.embopress.org/doi/full/10.15252/embj.2020106423

 

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“Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has a potentially long incubation period and spreads opportunistically among those who are unaware they are infected. Asymptomatic COVID-19 cases are those that do not develop symptoms for the duration of infection, whereas presymptomatic cases develop symptoms later in the course of infection, but both are crucial drivers of transmission. …”

Rasmussen AL and Popescu SV: SARS-CoV-2 transmission without symptoms. Science 371 ( 6535): 1206-1207 (2021).

https://science.sciencemag.org/content/371/6535/1206

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