Factors Associated with Suspected Developmental Delay in Thai Children Born with Low Birth Weight or Asphyxia.

OBJECTIVES: The aim of the study was to identify factors associated with a risk of suspected developmental delay (SDD) in high-risk children in Thailand. METHODS: We used data on children enrolled for developmental delay (DD) screening across Thailand collected by the Rajanagarindra Institute of Child Development, Department of Mental Health, Ministry of Public Health, Thailand. Children who were under 5 years of age with a birth weight of fewer than 2500 g and/or birth asphyxia in Thailand with high risk of DD were assessed using the Developmental Assessment for Intervention Manual (DAIM) between August 2013 and November 2019 (N = 14,314). RESULTS: The high-risk children who had a gestational age at birth of < 37 weeks (adjusted odds ratio = 1.54; 95% confidence interval = 1.39-1.70) and/or had a birth weight < 2500 g (1.22; 1.02-1.45), or had mothers who were not government officers (1.46; 1.11-1.93), had a low education level (1.36; 1.19-1.55), had a poor nutritional status (1.34; 1.09-1.65), and/or who were living in a high-altitude area (1.59; 1.32-1.91) were at a higher risk of SDD. CONCLUSIONS FOR PRACTICE: Children with a low birth weight and/or asphyxia during birth had a high risk of DD. SDD monitoring of children by community health workers and/or by developing outreach strategies, especially in underserved regions, should be considered. In addition, developing policies and guidelines, and intervention for high-risk children ought to be conducted to reduce the subsequent problems caused by the late detection of DD.

Evaluation of the Developmental Assessment for Intervention Manual (DAIM) for developmental screening in high-risk infants at 12 months of corrected age.

Early detection of developmental delay provides opportunities for early intervention. The Developmental Assessment for Intervention Manual (DAIM) is the simplified screening tool for detection of developmental delay in Thai young infants implemented country-wide by the Ministry of Public Health since 2015. Unlike standard assessment tool, DAIM can be obtained by lay staff or parents and takes less time. We aimed to evaluate the accuracy of the DAIM for detection of developmental delay among high-risk infants. This single center prospective study was conducted from May, 2017 to December, 2021. The infants with corrected aged of 12 months with history of birth asphyxia or low birth weight (<2500 g) who visited a tertiary hospital for developmental assessment were invited to participate the study. The four developmental domains (gross motor, fine motor, receptive language, and expressive language) were assessed by Bayley-III and followed by DAIM in the same visit. The 126 infants were enrolled, 50% were male. Using Bayley-III score < 7 as reference, the sensitivity for gross motor domain, fine motor domain, receptive language and expressive language were 83.3%, 57.1%, 55% and 19.2%, respectively. Specificity for each domain was 75.4%, 88.2%, 74.5% and 92%. Positive predictive value for each domain was 26.3%, 22.2%, 28.9% and 38.5%. Negative predictive value (NPV) for each domain was 97.7%, 97.2%, 89.8% and 81.4%. With high sensitivity and NPV of DAIM in motor domain, but low in expressive language domains, using DAIM alone in high-risk infants can detect motor delay well but will miss many infants with expressive language delaye.

Dimethoate induces genotoxicity as a result of oxidative stress: in vivo and in vitro studies.

Dimethoate ([O,O-dimethyl S-(N-methylcarbamoylmethyl) phosphorodithioate]) is an organophosphate insecticide and acaricide widely used for agricultural purposes. Genotoxicity refers to the ability of a chemical agent interact directly to DNA or act indirectly leading to DNA damage by affecting spindle apparatus or enzymes involved in DNA replication, thereby causing mutations. Taking into consideration the importance of genotoxicity induced by dimethoate, the purpose of this manuscript was to provide a mini review regarding genotoxicity induced by dimethoate as a result of oxidative stress. The present study was conducted on studies available in MEDLINE, PUBMED, EMBASE, and Google scholar for all kind of articles (all publications published until May, 2020) using the following key words: dimethoate, omethoate, DNA damage, genetic damage, oxidative stress, genotoxicity, mutation, and mutagenicity. The results showed that many studies were published in the scientific literature; the approach was clearly demonstrated in multiple tissues and organs, but few papers were designed in humans. In summary, new studies within the field are important for better understanding the pathobiological events of genotoxicity on human cells, particularly to explain what cells and/or tissues are more sensitive to genotoxic insult induced by dimethoate.