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Objectives. This study aimed to investigate the toxicity of nicotine and its metabolite cotinine on crustacean D. magna, and evaluate the quantity of compounds accumulated by D. magna. Materials and Methods. The bioassays involved the exposure of D. magna to varying doses of nicotine and cotinine, for 24 h and 48 h. The amount of bioaccumulated nicotine and cotinine was determined by an HPLC-DAD method. Results. The study has revealed that nicotine is more toxic than cotinine on D. magna, as the medium lethal concentration (LC50) values were higher for nicotine compared to cotinine. After 24 hours of exposure, D. magna accumulated comparable amounts of nicotine and cotinine. However, after 48 hours of exposure, the crustacean accumulated significantly lower levels of nicotine, which is consistent with the higher toxicity of nicotine compared to cotinine. Conclusions. These findings demonstrated that nicotine triggers various alterations in aquatic organism, hence jeopardizing the equilibrium of the aquatic ecosystem within a little timeframe.

Background. Acute pediatric poisonings represent an emergency pathology that associates a significant risk of adverse outcome or death. The increased incidence reported by antitoxic centers is a public health problem and requires implementing prevention strategies. Material and method. The six-years study targets children diagnosed with acute poisoning complicated by cardiogenic shock in a pediatric toxicology unit, performing a descriptive analysis of the epidemiological characteristics of the group. Aim. To provide statistical data that can represent the basis of preventive measures carried out by health services. Results. The incidence of severe intentional poisonings complicated by cardiogenic shock is almost twice as high as accidental ones. A strong correlation was identified between intentional poisonings and adolescent girls. Conclusions. The detailed epidemiological data allows targeted intervention measures to prevent suicide attempts and decrease the incidence of accidental exposures among the pediatric population.

During the coronavirus disease (COVID-19) pandemic healthcare workers (HCWs) acquired immunity by vaccination or exposure to multiple variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Our study is a comparative analysis between subgroups of HCWs constructed based on the number of SARS-CoV-2 infections, vaccination, and the dominant variant of SARS-CoV-2 in the population. We collected and analyzed data using the χ2 test and density incidence of reinfections in Microsoft Excel for Mac, Version 16.84, and MedCalc®, 22.026. Of the 829 HCWs, 70.1% (581) had only one SARS-CoV-2 infection and 29.9% (248) had two infections. Of the subjects with two infections, 77.4% (192) worked in high-risk departments and 93.2% (231) of the second infections were registered during Omicron dominance. The density incidence of reinfections was higher in HCWs vaccinated with the primary schedule than those vaccinated with the first booster, and the incidence ratio was 2.8 (95% CI: 1.2; 6.7). The probability of reinfection was five times lower (95% CI: 2.9; 9.2) in HCWs vaccinated with the primary schedule if the first infection was acquired during Omicron dominance. The subjects vaccinated with the first booster had a density incidence of reinfection three times lower (95% CI: 1.9; 5.8) if the first infection was during Omicron. The incidence ratio in subgroups constructed based on characteristics such as gender, age group, job category, and department also registered significant differences in density incidence. The history of SARS-CoV-2 infection by variant is important when interpreting and understanding public health data and the results of studies related to vaccine efficacy for hybrid immunity subgroup populations.

This study analyzed the neurological manifestation profiles of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection across pandemic waves in pediatric patients. The study collected data on patients aged between 0 and 18 years, diagnosed with acute SARS-CoV-2 infection, admitted to a pediatric tertiary hospital between 1 March 2020 and 28 February 2023. This study included 1677 patients. Neurological manifestations were noted in 10% (n = 168) of patients with a median age of 3.2 years (interquartile range: 1–11.92). Neurological manifestations were significantly associated with the pandemic waves (p = 0.006) and age groups (p < 0.001). Seizures were noted in 4.2% of cases and reached an increasing frequency over time (p = 0.001), but were not associated with age groups. Febrile seizures accounted for the majority of seizures. Headache was reported in 2.6% of cases and had similar frequencies across the pandemic waves and age groups. Muscular involvement was noted in 2% of cases, reached a decreasing frequency over time (p < 0.001), and showed different frequencies among the age groups. Neurological manifestations of acute SARS-CoV-2 infection exhibit distinct patterns, depending on the pandemic wave and patient age group. The Wuhan and Omicron waves involved the nervous system more often than the other waves.

Cristaluriile sunt entităţi rare în intoxicaţiile acute la copil, dar prin posibilitatea producerii insufi cienţei renale obstructive ele au un potenţial foarte grav, chiar ameninţător de viaţă. Autorii prezintă clasifi carea şi etiopatogenia cristaluriilor toxice, abordarea practică a intoxicaţiei cu etilenglicol şi a intoxicaţiei severe cu vitamina D, precum şi prevalenţa intoxicaţiei cu etilenglicol din două centre antitoxice pediatrice.