Soiling In Children Research Articles

Combining Outreach and Cross-sectional Research to Gather Children's Soil Values in Aotearoa New Zealand: Protocol for the Mixed Methods Soilsafe Kids Program.

Soil underpins most terrestrial systems; hence, its degradation should concern everyone. In 2021, Soilsafe Aotearoa surveyed the adult population of New Zealand about how they value soil, particularly values related to how they care about and are concerned about soil. Pursuant to this study, Soilsafe Kids (the outreach branch of Soilsafe Aotearoa) developed a combined research and outreach program to collect a supplemental data set of children's soil values, so both adults' and children's voices can be considered when understanding the implications of different practices and how to care for presently "uncared for" or neglected soils in the future. The program not only asks primary school students about their soil values but also aims to teach them about soil from many disciplinary perspectives to enhance their understanding and awareness of soil, and, more broadly, for knowledge production. Here we describe the research protocol used in this Soilsafe Kids program. This program uses surveys (in the form of worksheets), focus groups (introduced as group discussions), and art projects to learn what children think about soil in Tāmaki Makaurau Auckland. We have received ethics approval from the University of Auckland's Human Participants Ethics Committee (reference number 23556) on March 25, 2022, for 3 years. We have begun recruiting participants and delivering the Soilsafe Kids program in schools across Tāmaki Makaurau Auckland. Our data collection is ongoing with final student engagement in the first quarter of 2023. We expect to analyze data at the start of 2023 and to disseminate results later this year. Once this study is complete, we will disseminate the final results to the research community, stakeholders, and the local community through conference presentations, journal articles, hui (meetings), on our website, and in art exhibits. We note that although Tāmaki Makaurau Auckland is home to the majority of people living in Aotearoa New Zealand, the Auckland region only represents a small portion of Aotearoa New Zealand's land, and findings are not generalizable to Aotearoa New Zealand as a whole. DERR1-10.2196/43390.

Is hand-to-mouth contact the main pathway of children's soil and dust intake?

Children (n = 240) between the ages of 2 and 17years were randomly selected from three cities in China. The total amount of soil and dust (SD) on their hands was measured and ranged from 3.50-187.39mg (median = 19.49mg). We screened for seven elements (Ce, V, Y, Al, Ba, Sc, and Mn), and Ce levels were used to calculate hand SD by variability and soil elements. The main factors affecting SD amount were location and age group, as identified using a conditional inference tree. Hand SD and the hand SD intake rate were highest in Gansu Province, followed by Guangdong and Hubei provinces, respectively. Hand SD and the hand SD intake rate were highest among children in primary school, followed by kindergarten and secondary school, respectively. The hand SD intake rate of the three typical areas was 11.9mg/d, which was about 26.6% of the children's soil intake rate (44.8mg/d), indicating that hand-to-mouth contact is not the main route for children's soil intake in the three areas of China.

Estimating Children's Soil and Dust Ingestion Rates for Exposure Science (EPA)

Estimating Children's Soil and Dust Ingestion Rates for Exposure Science (EPA)

Status of arsenic accumulation in agricultural soils across China (1985–2016)

Based on 1677 published studies, 1648 sites across China collected from 1985 to 2016 were used to research the concentrations of arsenic in agricultural soils. In order to understand the status of arsenic pollution in agricultural soils in China over the past three decades, and to learn about the arsenic stocks in agricultural soils in various regions, and compared the relationship with annual arsenic emissions in China, and finally evaluated the potential ecological risks and human health risks. The median arsenic concentration in the surface agricultural soils of China was 10.40 mg Kg−1, and it ranged from 0.4 mg Kg−1 to 175.8 mg Kg−1. The inventory of arsenic in Chinese agricultural surface soils was estimated to be 3.71 × 106 t. In this study, the arsenic concentrations were found to be higher in Central, South, and Southwest China than those in other regions. The trend of arsenic pollution in agricultural soils has gradually increased over the past three decades. However, the growth rate of arsenic concentrations pollution in farmlands agricultural in China slowed during 2012–2016. The ecological risk index and geoaccumulation index revealed that arsenic in Chinese agricultural soil poses a low risk to the ecosystem. For human health assessment, the dietary pathway was the main pathway of exposure to arsenic in farmland soil of China. However, children's soil intake also contributed 34.48% to the exposure to arsenic, owing to their behavior. This study can provide a reference for the management of arsenic agricultural pollution in farmland soils in China.

Mechanisms of children's soil exposure

Pollution is a concerning and highly studied area, especially in the arena of children's health. The focus of this concern, however, is typically limited to air and water pollution, leaving an important source under-studied and out of the concern of the general public. Soil pollution provides a unique threat to children's health, due to their increased exposure and susceptibility to its contaminants. The microbiome of a child is developed prior to birth and continues to evolve over their lifetime with each encounter to the outside world. The environment a child inhabits directly affects their microbiome and their overall health, and through interactions with contaminated soil, a child can accumulate adverse health outcomes. The aim of this article is to summarize the methods by which soil becomes contaminated and how children become exposed to the resulting toxicants.

Effects of geography, age, and gender on Chinese children's soil ingestion rate

ABSTRACTThe soil/dust ingestion rate (SIR) is a crucial parameter for a human health risk assessment associated with contaminated soil. In addition, SIR levels may be influenced by demographic characteristics and geographic environments. The objectives of this study were to explore the effects of geography, age, and gender on Chinese children's SIR levels. We estimated SIRs for 210 children aged 2.5 to <12 years from three cities of China. The results showed that the mean SIR level for children aged 2.5 to <6 years (kindergarten age) was 60.8 mg d−1, significantly lower than that (91.6 mg d−1) observed for children aged 6 to <12 years (primary school age). There was no significant difference in mean SIR levels between females (78.0 mg d−1) and males (69.2 mg d−1). The mean SIR level (117.4 mg d−1) for the children group in Lanzhou was significantly higher than that for the Wuhan children group (63.0 mg d−1) and the Shenzhen children group (47.5 mg d−1). However, there was an appreciable but not statistically significant difference in SIR levels between children groups in Wuhan and Shenzhen. Our study highlights the necessity of developing SIR values for children in different geographic locations and age stages.

Clinical approach to fecal soiling in children.

Fecal soiling is common in childhood and can be caused by stool toileting refusal, fecal incontinence due to organic disease, or encopresis due to functional constipation. Anatomical, neurologic, and inflammatory causes for fecal soiling are ruled out by history and physical examination and, if necessary, by anorectal manometry, barium enema, and rectal biopsy. The initial treatment suggestion for children with stool toileting refusal is to put the child back into pull-ups or diapers. Most children with fecal soiling due to organic disease continue with some degree of incontinence despite optimal medical management. Antegrade enema administration helps those with severe fecal incontinence due to organic causes who do not respond to medical management. Successful treatment of constipation and encopresis requires a combination of medical therapy, nutritional intervention, behavioral intervention, and long-term compliance with laxative use. The combined treatment approach improves the constipation and encopresis in all patients who comply with the treatment program. In some children, cow's milk protein intolerance may be the cause. In them, cow's milk protein needs to be eliminated.

Chronic Constipation and Soiling in Children: A Review of the Psychological and Family Literature

This review article considers the clinical significance and management of chronic constipation and soiling in children. Difficulties in determining the epidemiology and co- morbidity are considered. A historical perspective integrating paediatric and psychological thought is provided. Various perspectives and treatment modalities for chronic constipation and soiling are reviewed with particular emphasis on psychological approaches for the management of resistant, ‘psychosomatic’ children. Associations between chronic constipation and both sexual abuse and life-events are considered. Prognostic factors are discussed and suggestions made for further research.

Limits in soil ingestion data: The potential for imputing data when soil ingestion estimates are below the detection limit

Abstract The formation of a soil ingestion distribution based on pooling data from current soil ingestion studies is appealing. An important issue in forming such a distribution is what to do with negative soil ingestion estimates for particular subjects, because they comprise approximately 10 to 40% of the total soil ingestion estimates. A method of correcting for the negative estimates of soil ingestion is to make use of the “soil ingestion detection limit”;. An appropriate methodology for forming estimates of such detection limits is available in the literature. This paper discusses appropriate use of the existing soil ingestion detection limit methodology in forming a pooled database using current soil ingestion study data. The discussion focuses attention on the current limitations of children's soil ingestion data and potential pitfalls in applying the detection limit model when generating a soil ingestion distribution. In summary, currently available soil ingestion data are not sufficiently reliabl...

Relative bioavailability of lead from mining waste soil in rats

The purposes of this study were to determine the extent of absorption of lead (Pb) in mining waste soil from Butte, Montana, and to investigate the effect of mining waste soil dose (g soil/day) on tissue lead concentrations. Young, 7- to 8-week-old male and female Sprague-Dawley rats (5/sex/group) were given mining waste soil that contained 810 or 3908 ppm lead mixed in a purified diet (AIN-76) at four different dose levels (0.2, 0.5, 2, and 5% dietary soil) for 30 consecutive days. Standard groups included untreated controls and dosed feed soluble lead acetate groups (1, 10, 25, 100, and 250 μg Pb/g feed). The test soil dose levels bracketed a pica child's soil exposure level and the lead acetate concentrations bracketed the test soil dose levels of lead. Liver, blood, and femur were analyzed for total lead concentration using graphite furnace atomic absorption spectroscopy. Clinical signs, body weight, food consumption, and liver weights for test soil and standard groups were similar to control. Tissue lead concentrations from test soil animals were significantly lower than the tissue concentrations for the lead acetate group. Relative percentage bioavailability values, based on lead acetate as the standard, were independent of the two different test soils, dose levels, and sex and were only slightly dependent on the tissue (blood > bone, liver). Mean relative percentage bioavailability values of lead in the Butte mining waste soil were 20% based on the blood data, 9% based on the bone data, and 8% based on the liver data. The results of this study will provide the information needed to determine the significance of lead exposure from Butte soils in assessing human health risks as part of the Superfund Remedial Investigation/Feasibility Study process.

Painful Defecation and Fecal Soiling in Children

Fecal soiling is a common complaint among school-age children. The fecal soiling is often accompanied by chronic constipation and so-called "idiopathic," "functional," or "psychogenic" megacolon, the cause of which is undetermined. The records of all children presenting to a pediatric gastroenterology clinic between 1981 and 1990 with difficult defecation were reviewed to determine the incidence of painful defecation and its relationship to chronic impaction and fecal soiling. There were 227 children; 74 were younger than 36 months of age and 153 were older than 36 months. Of the younger children, 86% presented with pain, 71% with impaction, and 97% with severe withholding. The younger children had painful defecation for a mean of 14 +/- 9 (SD) months before presentation. Of the older children, 85% presented with fecal soiling, 57% with pain, and 73% with fecal impaction, and 96% exhibited withholding; the older children had difficult defecation for a mean of 56 +/- 42 months before presentation. Sixty-three percent of the children presenting with fecal soiling had a history of painful defecation beginning before 36 months of age. Painful defecation frequently precedes chronic fecal impaction and fecal soiling in American children. Early, effective treatment of painful defecation in infancy might reduce the incidence of chronic fecal impaction and fecal soiling in school-age children.

Relative Bioavailability of Lead from Mining Waste Soil in Rats

The purposes of this study were to determine the extent of absorption of lead (Pb) in mining waste soil from Butte, Montana, and to investigate the effect of mining waste soil dose (g soil/day) on tissue lead concentrations. Young, 7- to 8-week-old male and female Sprague-Dawley rats (5/sex/group) were given mining waste soil that contained 810 or 3908 ppm lead mixed in a purified diet (AIN-76) at four different dose levels (0.2, 0.5, 2, and 5% dietary soil) for 30 consecutive days. Standard groups included untreated controls and dosed feed soluble lead acetate groups (1, 10, 25, 100, and 250 μg Pb/g feed). The test soil dose levels bracketed a pica child's soil exposure level and the lead acetate concentrations bracketed the test soil dose levels of lead. Liver, blood, and femur were analyzed for total lead concentration using graphite furnace atomic absorption spectroscopy. Clinical signs, body weight, food consumption, and liver weights for test soil and standard groups were similar to control. Tissue lead concentrations from test soil animals were significantly lower than the tissue concentrations for the lead acetate group. Relative percentage bioavailability values, based on lead acetate as the standard, were independent of the two different test soils, dose levels, and sex and were only slightly dependent on the tissue (blood> bone, liver). Mean relative percentage bioavailability values of lead in the Butte mining waste soil were 20% based on the blood data. 9% based on the bone data, and 8% based on the liver data. The results of this study will provide the information needed to determine the significance of lead exposure from Butte soils in assessing human health risks as part of the Superfund Remedial Investigation/Feasibility Study process.

Effect of Soil Dose on Bioavailability of Lead from Mining Waste Soil in Rats

The purpose of this study was to determine the extent of absorption of lead (Pb) in mining waste soil from Butte, Montana. It is the first study to fully investigate the bioavailability of lead in soils containing mine waste using a soil dose response approach. Young 7–8 week-old male and female Sprague-Dawley rats (5 animals/sex/group) were given mining waste soil [810 ppm lead (Test Soil I) or 3,908 ppm lead (Test Soil III)] mixed in a purified diet (AIN—76™) at four different dose levels (0.2, 0.5, 2 and 5% dietary soil) for 30 consecutive days. The test soil dose levels at 2 and 5% were chosen to bracket a pica-for-soil child's soil exposure levels. A pica-for-soil child is a young child who eats large quantities of soil (10 g day−1). Standard groups included untreated controls and dosed feed soluble lead acetate groups (1, 10, 25, 100 and 250 μg Pb g−1 feed). The concentrations of lead acetate were chosen to bracket the test soil dose levels of lead. Liver, blood and femur, representing the three compartments in which lead is distributed in the body, were analyzed for total lead concentration using graphite furnace atomic absorption spectroscopy. Clinical signs, body weight, food consumption and liver weights for treated and standard groups were similar to control. Tissue lead concentrations from test soil animals were significantly lower than the tissue concentrations for the dosed feed lead acetate group. Group mean whole blood, bone and liver lead concentrations increased with increasing dose levels for most treatment groups. The increases in blood, bone and liver lead concentrations were not proportional with increasing dose levels and plateaued at the high dose levels. Relative percent bioavailability values, based on dosed feed soluble lead as the standard, were independent of the two different test soils, dose levels or sex, and only slightly dependent on the tissue (blood > bone, liver). Overall relative percent bioavailability values were 20% based on the blood data; 9% based on the bone data; and 8% based on the liver data (2 and 5% dose levels only). The results of this study will provide the scientific validity needed to determine the significance of lead exposure from Butte soils in assessing human health risks as part of the Superfund Remedial Investigation/Feasibility Study process.

Practical and Emotional Aspects of Soiling in Children with Anorectal Anomalies

Practical and Emotional Aspects of Soiling in Children with Anorectal Anomalies