Johnson Dana E, Gunnar Megan R
Monogr Soc Res Child Dev. 2011 Dec;76(4):92-126. doi: 10.1111/j.1540-5834.2011.00629.x.
Children within institutional care settings experience significant global growth suppression, which is more profound in children with a higher baseline risk of growth impairment (e.g., low birth weight [LBW] infants and children exposed to alcohol in utero). Nutritional insufficiencies as well as suppression of the growth hormone-insulin-like growth factor axis (GH-IGF-1) caused by social deprivation likely both contribute to the etiology of psychosocial growth failure within these settings. Their relative importance and the consequent clinical presentations probably relate to the age of the child. While catch-up growth in height and weight are rapid when children are placed in a more nurturing environment, many factors, particularly early progression through puberty, compromise final height. Potential for growth recovery is greatest in younger children and within more nurturing environments where catch-up in height and weight is positively correlated with caregiver sensitivity and positive regard. Growth recovery has wider implications for child well-being than size alone, because catch-up in height is a positive predictor of cognitive recovery as well. Even with growth recovery, persistent abnormalities of the hypothalamic-pituitary-adrenal system or the exacerbation of micronutrient deficiencies associated with robust catch-up growth during critical periods of development could potentially influence or be responsible for the cognitive, behavioral, and emotional sequelae of early childhood deprivation. Findings in growth-restricted infants and those children with psychosocial growth are similar, suggesting that children experiencing growth restriction within institutional settings may also share the risk of developing the metabolic syndrome in adulthood (obesity, Type 2 diabetes mellitus, hypertension, heart disease). Psychosocial deprivation within any care-giving environment during early life must be viewed with as much concern as any severely debilitating childhood disease.
机构照料环境中的儿童经历显著的全身性生长抑制,这在基线生长受损风险较高的儿童中更为严重(例如低出生体重[LBW]婴儿以及子宫内接触酒精的儿童)。营养不足以及社会剥夺导致的生长激素 - 胰岛素样生长因子轴(GH - IGF - 1)抑制可能都促成了这些环境中心理社会生长发育迟缓的病因。它们的相对重要性以及随之而来的临床表现可能与儿童的年龄有关。当儿童被置于更具养育性的环境中时,身高和体重的追赶生长会很快,但许多因素,尤其是青春期的早期进展,会影响最终身高。在较年幼的儿童以及更具养育性的环境中,生长恢复的潜力最大,在这种环境中身高和体重的追赶与照料者的敏感性和积极关注呈正相关。生长恢复对儿童福祉的影响比单纯的体型更大,因为身高的追赶也是认知恢复的一个积极预测指标。即使实现了生长恢复,下丘脑 - 垂体 - 肾上腺系统的持续异常或与关键发育阶段强劲追赶生长相关的微量营养素缺乏加剧,都可能潜在地影响或导致幼儿期剥夺的认知、行为和情感后遗症。生长受限婴儿和那些心理社会生长发育迟缓儿童的研究结果相似,这表明在机构环境中经历生长受限的儿童在成年后也可能有患代谢综合征(肥胖、2型糖尿病、高血压、心脏病)的风险。早期生活中任何照料环境下的心理社会剥夺都必须像任何严重致残的儿童疾病一样受到高度关注。