Urinary excretion of calcium, uric acid and citrate in healthy children and adolescents

2002 ◽  
Vol 78 (2) ◽  
pp. 153-60 ◽  
Author(s):  
Maria Goretti M. G. Penido ◽  
José Silvério S. Diniz ◽  
Milena Maria Moreira Guimarães ◽  
Rodrigo Barbosa Cardoso ◽  
Marcelo F. de O. Souto ◽  
...  
Keyword(s):  
Uric Acid ◽  
Urinary Excretion ◽  
Children And Adolescents ◽  
Healthy Children

Serum and Urinary Levels of Nitric Oxide and Uric Acid in Nigerian Children with Asthma

2021 ◽  
Vol 7 (1) ◽  
pp. 44-48
Author(s):  
Olatunbosun Arinola ◽  
Temiloluwa Olaiya ◽  
Victory Edem ◽  
Sheu Rahamon
Keyword(s):  
Nitric Oxide ◽  
Uric Acid ◽  
Urinary Excretion ◽  
Elevated Serum ◽  
Serum Levels ◽  
Healthy Children ◽  
Urinary Levels ◽  
Children With Asthma ◽  
Concomitant Reduction ◽  
Study Methodology

Background: Asthma is associated with increased production of reactive oxygen and nitrogen species and an alteration in the levels of antioxidants activities in the lung and blood. The increased production of the superoxide anion radicals contributes to airway remodelling and disease severity. Physiologically, the effect of increased free radical generation is eliminated by corresponding activities of a network of antioxidants. Presently, there is the dearth of information on the steady-state concentrations of nitric oxide (NO) and uric acid (UA) in children with asthma. The serum and urinary levels of NO and UA in children with asthma were thus determined in this study. Methodology: Fifty children consisting of 25 children with asthma and 25 age-matched apparently healthy children without asthma were enrolled into this study. Serum and urinary levels of NO and UA were determined using standard methods. Results: Serum levels of NO and UA were significantly higher while the urinary levels of NO and UA were significantly lower in children with asthma compared with the controls. There was no significant correlation between the serum ad urinary levels of NO and UA in children with asthma. Also, gender differences were not observed in the serum and urinary levels of NO and UA in children with asthma. Conclusion: Children with asthma have elevated serum levels of NO and UA accompanied with suboptimal urinary excretion. Therefore, children with asthma might benefit from routine renal function assessment owing to damages that can result from systemic accumulation of UA with concomitant reduction in its urinary excretion.

Urinary excretion of retinol-binding protein in healthy children and adolescents

1995 ◽  
Vol 9 (3) ◽  
pp. 299-302 ◽  
Author(s):  
Hans-Jacob Bangstad ◽  
Peter Kierulf ◽  
Pål Kjærsgaard ◽  
Ketil Mevold ◽  
Knut Dahl-Jørgensen
Keyword(s):  
Urinary Excretion ◽  
Children And Adolescents ◽  
Binding Protein ◽  
Retinol Binding Protein ◽  
Healthy Children

scholarly journals Marked Influence of Adiposity on Laboratory Biomarkers in a Healthy Cohort of Children and Adolescents

2019 ◽  
Vol 105 (4) ◽  
pp. e1781-e1797 ◽  
Author(s):  
Victoria Higgins ◽  
Arghavan Omidi ◽  
Houman Tahmasebi ◽  
Shervin Asgari ◽  
Kian Gordanifar ◽  
...  
Keyword(s):  
Uric Acid ◽  
Waist Circumference ◽  
Children And Adolescents ◽  
Biochemical Markers ◽  
Biochemical Marker ◽  
Reference Intervals ◽  
Healthy Children ◽  
Height Ratio ◽  
Waist To Height Ratio ◽  
Age And Sex

Abstract Background The prevalence of pediatric obesity is increasing worldwide and strongly associates with metabolic abnormalities, including inflammation, insulin resistance, and dyslipidemia. This study assessed the influence of 3 measures of adiposity on levels of routinely assessed biochemical markers in apparently healthy children and adolescents. Methods The influence of adiposity on 35 biochemical markers was examined in the Canadian Laboratory Initiative on Pediatric Reference Intervals (CALIPER) cohort of healthy children and adolescents by comparing serum biomarker levels between subjects with a normal weight, overweight, and obese body mass index (BMI). The cohort comprised 1332 subjects 5.1 to 19.0 years of age with a BMI ranging from 13.4 to 65.0 kg/m2. The association between each biochemical marker and BMI, waist circumference, and waist-to-height ratio z-scores was assessed, while adjusting for age and sex. Reference intervals were established for all biochemical markers before and after removing overweight/obese subjects. Results In children and adolescents, levels of 13 routinely assessed biochemical markers, including alanine aminotransferase, apolipoprotein B, complement components 3 and 4, cholinesterase, high sensitivity C-reactive protein, gamma-glutamyl transferase, haptoglobin, high-density lipoprotein cholesterol, iron, transferrin, triglycerides, and uric acid, were significantly different between BMI categories. BMI, waist circumference, and/or waist-to-height ratio were significantly associated with the serum concentration of 24 of the 35 markers examined, after adjusting for age and sex. Conclusions Excess adiposity significantly influences circulating levels of routinely assessed laboratory markers, most notably liver enzymes, lipids/lipoproteins, inflammatory markers, and uric acid in children and adolescents. Although it is unknown whether altered biochemical marker levels in subjects with overweight/obesity reflect health or indolent disease, clinicians should be aware of the effect of weight status on several laboratory tests.

Normal percentile curves for left atrial size in healthy children and adolescents

2019 ◽  
Vol 36 (4) ◽  
pp. 770-782 ◽  
Author(s):  
Alejandro Díaz ◽  
Yanina Zócalo ◽  
Daniel Bia
Keyword(s):  
Children And Adolescents ◽  
Left Atrial ◽  
Healthy Children ◽  
Left Atrial Size ◽  
Percentile Curves ◽  
Atrial Size

scholarly journals Folate and Cobalamin Serum Levels in Healthy Children and Adolescents and Their Association with Age, Sex, BMI and Socioeconomic Status

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 546
Author(s):  
Paulina Kreusler ◽  
Mandy Vogel ◽  
Anja Willenberg ◽  
Ronny Baber ◽  
Yvonne Dietz ◽  
...  
Keyword(s):  
Socioeconomic Status ◽  
Children And Adolescents ◽  
Serum Levels ◽  
Population Based ◽  
Research Centre ◽  
Healthy Children ◽  
Serum Samples ◽  
Lms Method ◽  
Healthy Participants ◽  
Age And Sex

This study proposes age- and sex-specific percentiles for serum cobalamin and folate, and analyzes the effects of sex, age, body mass index (BMI), and socioeconomic status (SES) on cobalamin and folate concentrations in healthy children and adolescents. In total, 4478 serum samples provided by healthy participants (2 months–18.0 years) in the LIFE (Leipzig Research Centre for Civilization Diseases) Child population-based cohort study between 2011 and 2015 were analyzed by electrochemiluminescence immunoassay (ECLIA). Continuous age-and sex-related percentiles (2.5th, 10th, 50th, 90th, 97.5th) were estimated, applying Cole’s LMS method. In both sexes, folate concentrations decreased continuously with age, whereas cobalamin concentration peaked between three and seven years of age and declined thereafter. Female sex was associated with higher concentrations of both vitamins in 13- to 18-year-olds and with higher folate levels in one- to five-year-olds. BMI was inversely correlated with concentrations of both vitamins, whilst SES positively affected folate but not cobalamin concentrations. To conclude, in the assessment of cobalamin and folate status, the age- and sex-dependent dynamic of the respective serum concentrations must be considered. While BMI is a determinant of both vitamin concentrations, SES is only associated with folate concentrations.

scholarly journals Fear conditioning and stimulus generalization in association with age in children and adolescents

2021 ◽  
Author(s):  
Julia Reinhard ◽  
Anna Slyschak ◽  
Miriam A. Schiele ◽  
Marta Andreatta ◽  
Katharina Kneer ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Fear Conditioning ◽  
Repeated Measures ◽  
Conditioned Fear ◽  
Fear Learning ◽  
Stimulus Generalization ◽  
Healthy Children ◽  
Older Individuals ◽  
Age Related ◽  
Current Task

AbstractThe aim of the study was to investigate age-related differences in fear learning and generalization in healthy children and adolescents (n = 133), aged 8–17 years, using an aversive discriminative fear conditioning and generalization paradigm adapted from Lau et al. (2008). In the current task, participants underwent 24 trials of discriminative conditioning of two female faces with neutral facial expressions, with (CS+) or without (CS−) a 95-dB loud female scream, presented simultaneously with a fearful facial expression (US). The discriminative conditioning was followed by 72 generalization trials (12 CS+, 12 GS1, 12 GS2, 12 GS3, 12 GS4, and 12 CS−): four generalization stimuli depicting gradual morphs from CS+ to CS− in 20%-steps were created for the generalization phases. We hypothesized that generalization in children and adolescents is negatively correlated with age. The subjective ratings of valence, arousal, and US expectancy (the probability of an aversive noise following each stimulus), as well as skin conductance responses (SCRs) were measured. Repeated-measures ANOVAs on ratings and SCR amplitudes were calculated with the within-subject factors stimulus type (CS+, CS−, GS1-4) and phase (Pre-Acquisition, Acquisition 1, Acquisition 2, Generalization 1, Generalization 2). To analyze the modulatory role of age, we additionally calculated ANCOVAs considering age as covariate. Results indicated that (1) subjective and physiological responses were generally lower with increasing age irrespective to the stimulus quality, and (2) stimulus discrimination improved with increasing age paralleled by reduced overgeneralization in older individuals. Longitudinal follow-up studies are required to analyze fear generalization with regard to brain maturational aspects and clarify whether overgeneralization of conditioned fear promotes the development of anxiety disorders or vice versa.

The triglycerides and glucose index is associated with elevated blood pressure in apparently healthy children and adolescents

2019 ◽  
Vol 178 (7) ◽  
pp. 1069-1074 ◽  
Author(s):  
Luis E. Simental-Mendía ◽  
Gabriela Hernández-Ronquillo ◽  
Claudia I. Gamboa-Gómez ◽  
Rita Gómez-Díaz ◽  
Martha Rodríguez-Morán ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Children And Adolescents ◽  
Elevated Blood Pressure ◽  
Healthy Children ◽  
Elevated Blood ◽  
Apparently Healthy
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