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13) PMID: 37646421 DOI: 10.1089/neu.2023.0039
% 2024 Journal of neurotrauma
* Prognostic and Diagnostic Utility of Serum Biomarkers in Pediatric Traumatic Brain Injury.
- Traumatic brain injury (TBI) remains a major cause of morbidity and death among the pediatric population. Timely diagnosis, however, remains a complex task because of the lack of standardized methods that permit its accurate identification. The aim of this study was to determine whether serum levels of brain injury biomarkers can be used as a diagnostic and prognostic tool in this pathology. This prospective, observational study collected and analyzed the serum concentration of neuronal injury biomarkers at enrollment, 24h and 48h post-injury, in 34 children ages 0-18 with pTBI and 19 healthy controls (HC). Biomarkers included glial fibrillary acidic protein (GFAP), neurofilament protein L (NfL), ubiquitin-C-terminal hydrolase (UCH-L1), S-100B, tau and tau phosphorylated at threonine 181 (p-tau181). Subjects were stratified by admission Glasgow Coma Scale score into two categories: a combined mild/moderate (GCS 9-15) and severe (GCS 3-8). Glasgow Outcome Scale-Extended (GOS-E) Peds was dichotomized into favorable (≤4) and unfavorable (≥5) and outcomes. Data were analyzed utilizing Prism 9 and R statistical software. The findings were as follows: 15 patients were stratified as severe TBI and 19 as mild/moderate per GCS. All biomarkers measured at enrollment were elevated compared with HC. Serum levels for all biomarkers were significantly higher in the severe TBI group compared with HC at 0, 24, and 48h. The GFAP, tau S100B, and p-tau181 had the ability to differentiate TBI severity in the mild/moderate group when measured at 0h post-injury. Tau serum levels were increased in the mild/moderate group at 24h. In addition, NfL and p-tau181 showed increased serum levels at 48h in the aforementioned GCS category. Individual biomarker performance on predicting unfavorable outcomes was measured at 0, 24, and 48h across different GOS-E Peds time points, which was significant for p-tau181 at 0h at all time points, UCH-L1 at 0h at 6-9 months and 12 months, GFAP at 48h at 12 months, NfL at 0h at 12 months, tau at 0h at 12 months and S100B at 0h at 12 months. We concluded that TBI leads to increased serum neuronal injury biomarkers during the first 0-48h post-injury. A biomarker panel measuring these proteins could aid in the early diagnosis of mild to moderate pTBI and may predict neurological outcomes across the injury spectrum.

14) PMID: 38165639 DOI: 10.1089/derm.2023.0258
% 2024 Dermatitis : contact, atopic, occupational, drug
* Toxic Skin Reactions Should Be Differentiated from Allergic Reactions to Chemotherapeutic Drugs in Children: A Case Series and Review of the Literature.
- Background: Chemotherapeutic drugs can lead to a wide spectrum of cutaneous findings, ranging from nonimmune toxic reactions to severe immune-mediated hypersensitivity reactions. The aim of this study was to evaluate the clinical, histopathological features, and prognosis of toxic skin reactions to chemotherapeutic drugs and to compare them with characteristics of immune-mediated reactions in children with malignancies. Methods: The medical records of all children with cancer who experienced skin reactions after chemotherapy administration and diagnosed as a toxic skin reaction between 2010 and 2022 were retrospectively analyzed. The diagnosis was re-evaluated and differentiated from other similar disorders by using clinical manifestations, photodocumentation, and histopathological findings. Results: A total of 17 children aged 2-17 years were involved: toxic erythema of chemotherapy (TEC) in 14 children, methotrexate-induced epidermal necrosis in 2 children, and toxic epidermal necrolysis (TEN)-like TEC in 1 child. The most commonly implicated drug was methotrexate. Most patients recovered rapidly after drug cessation and supportive measures. In 10 of the 17 patients, reintroduction of the culprit chemotherapeutic drug at reduced doses or increased dosage intervals was possible without any recurrence. Six patients could not receive further doses since they deceased due to sepsis and other complications. Conclusions: Cutaneous toxic eruptions to chemotherapeutic drugs may present with a severe phenotype resembling Stevens-Johnson syndrome/TEN. An accurate diagnosis prevents potentially harmful therapeutic interventions, withholding of chemotherapy, and erroneous assignment of drug allergies.

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