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UCLA researchers found that long-term exposure to the pesticide chlorpyrifos significantly increases Parkinson's disease risk, with exposed individuals showing more than twice the likelihood of developing the condition. Laboratory studies demonstrated the chemical damages dopamine neurons and impairs the brain's ability to clear toxic protein aggregates.
The CDC developed a tiered case definition for self-reported traumatic brain injury (TBI) to improve national surveillance, addressing limitations of hospital-based data that undercount TBIs occurring in outpatient and untreated settings. This surveillance system aims to better estimate the public health burden of concussion and TBI across all causes of brain injury in the United States.
This CDC study examined 3,557 children aged 5-17 years and found 9.9% sustained a TBI in the past year, with specific symptoms (sleep changes, concentration difficulty, light/noise sensitivity, learning difficulties) associated with worse school outcomes. Findings support school-based accommodations and graduated academic support to facilitate successful return-to-learn after TBI.
This study investigates circulating proteins and microRNAs in cerebrospinal fluid and serum as potential biomarkers to differentiate MS disease subtypes and guide treatment decisions. Analysis of two cohorts identified 13 cerebrospinal fluid proteins and 10 serum proteins that differed between MS patients and controls, with 16 serum microRNAs distinguishing between relapsing-remitting and secondary progressive MS.
This systematic scoping review identified 11 studies examining frailty in people with multiple sclerosis, finding frailty prevalence ranges from 17–66% with early onset compared to the general population. Higher disability levels, longer disease duration, and progressive MS subtypes were consistently associated with frailty, which also correlated with reduced walking performance, poor sleep quality, fatigue, and lower quality of life.
