Прокальцитонин (ПКТ) и пресепсин (ПСП) являются хорошо изученными биомаркерами для диагностики и прогноза сепсиса. В нашем исследовании изучена роль этих биомаркеров для ранней диагностики, определения прогноза и мониторинга эффективности антибактериальной терапии больных инфекционным эндокардитом (ИЭ). Материал и методы. Обследован 71 пациент, в том числе 62 больных ИЭ, 9 пациентов, у которых ИЭ был исключен. У всех пациентов диагноз ИЭ установлен на основании модифицированных критериев Duke. Результаты. Диагностическая чувствительность ПКТ в отношении ИЭ составила 66,1%, специфичность-77,8%, точность-68,6%, ПСП-84,6, 77,8 и 88,6% соответственно. Вывод. ПСП может быть рекомендован в качестве перспективного биомаркера для ранней диагностики ИЭ, особенно в случае высокого клинического подозрения при получении отрицательных результатов исследования гемокультуры. Ключевые слова: инфекционный эндокардит, прокальцитонин, пресепсин, биомаркер, методы лабораторной диагностики.
Background and Aims: Inadequate nutrient provision causes neonatal growth failure and malnutrition. Therefore, this study aimed to 1) quantify infant growth velocity from birth to hospital discharge, 2) determine the incidence of neonatal malnutrition at the time of discharge from a government hospital newborn unit in Nakuru, Kenya. Methods: After ethical approval, data was collected for infants (n=104) hospitalized >14 days (June 2016 - December 2018) including: birth gestational age (GA), birth and discharge weight (grams, g) with z-scores (2013 Fenton Preterm or 2006 World Health Organization 0-2 Year growth chart), hospital length of stay (LOS) days. Growth during hospitalization was calculated in g/day [(discharge weight – birth weight)/LOS] and g/kilogram(kg)/day [1000xln(birth weight/discharge weight)/LOS). Malnutrition was diagnosed by birth to discharge weight z-score change (decline): mild = 0.8-1.2 standard deviations (SD), moderate = >1.2-2.0 SD, severe = >2.0 SD. P-value <0.05 was significant. Results: 94/104 (90.4%) infants were preterm with median birth GA 32 weeks, weight 1500 g (z-score -0.33), LOS 21 days and discharge weight 1735 g (z-score -1.95). Median weight gain was 8.2 g/day or 5.2 g/kg/day with weight z-score change -1.34 SD. Linear regression predicted each hospital day decreased z-score by -0.031 (p<0.001). At discharge, 81.7% of infants met malnutrition criteria—27.1% mild, 49.4% moderate, 23.5% severe. Conclusions: Infants with LOS >14 days in a government hospital newborn unit in Nakuru, Kenya, experience growth rates below recommended velocities by the World Health Organization (23-34 grams/day from 0-4 months). Nutrition intervention is necessary to support appropriate growth.
Objectives Vitamin E plays different roles in health based on its three isoforms: alpha (α)-tocopherol is anti-inflammatory, gamma (γ)-tocopherol is pro-inflammatory, delta (δ)-tocopherol remains unknown. As inflammation may promote hypertension, the objective of this study is to examine relationships between maternal serum tocopherol levels at time of delivery and pregnancy-related blood pressure (BP) changes. Hypothesis is that increased level of α-tocopherol has favorable effects and γ-tocopherol has adverse effects on maternal BP. Methods An IRB-approved cross-sectional study enrolled mother-infant dyads (n = 342) at time of delivery (Omaha, NE, USA) for collection of electronic health data and maternal blood. High-performance liquid chromatography analyzed serum tocopherol levels. Maternal BP values were collected from 1st and 3rd trimester clinic/hospital visits with changes calculated in systolic BP and mean arterial pressure (MAP = diastolic BP + 1/3(systolic BP – diastolic BP). Mothers were classified as hypertensive if: systolic BP ≥140, diastolic BP ≥ 90, or diagnosis of preeclampsia. Two-sample t-test and Pearson correlation coefficients compared relationships between serum tocopherol levels and BP data. P-value < 0.05 was significant. Results Mean maternal age was 28.5 years, majority (61.4%) Caucasian, 10.4% (n = 29) with hypertension. Mean serum levels: α-tocopherol 15,229 + 5849 mcg/L, γ-tocopherol 1642 + 868 mcg/L, δ-tocopherol 226 + 164 mcg/L, with α: γ ratio 11.5 + 8.7. Mean serum α-tocopherol level was higher in normotensive vs. hypertensive mothers (15,751 vs. 13,819 mcg/L; P = 0.06). Ratio of α: γ demonstrated an inverse correlation with change in maternal systolic BP (r = −0.128; P = 0.03). No other relationships were significant. Conclusions Increasing maternal α-tocopherol and α: γ ratio has favorable association with maintaining normal BP during pregnancy. More research is needed to specifically identify serum thresholds and tocopherol isoform ratios for favorably reducing risk of pregnancy-related hypertension. Funding Sources Department of Pediatrics and the Child Health Research Institute at the University of Nebraska Medical Center and Children's Hospital & Medical Center (Omaha, NE).
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