Preventive Effect of Lactobacillus GG on Atopic Manifestation in Children With Cow's Milk Allergy
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 180
- 试验地点
- 1
- 主要终点
- Occurrence of allergic manifestations
研究概览
简要总结
Food allergy (FA), defined as an adverse immune response to food allergens, is among the most frequent allergic disorders in childhood and it has recognized as a major paediatric health problem due to the severity of the reactions and the dramatic increase over the past decades. Cow's milk allergy (CMA) is the most frequent FA in children worldwide, and it has been demonstrated that it could be the first manifestation of the so-called "atopic march", characterized by the occurrence of other allergic disorders in the subsequent years after the onset of CMA. In a previous study, involving children with CMA over a period of 5 years, 40% developed asthma, 21% atopic eczema, and 43% allergic rhinitis. Similar results have been reported in a recent study on Finnish children Intestinal microflora appears to have a crucial role in the development of atopic disorders. Children with atopic diseases have different commensal bacterial groups in the gut compared to non-atopic children, and differences are also found between countries with high and low incidence of atopic diseases. There is currently great interest in manipulating the normal microbiota to accrue health benefits through an approach known as "probiotics." Probiotics are defined as "live microorganisms which when administered in adequate amounts confer a health benefit on the host". The conceptual basis of possible use of probiotics in the prevention and treatment of atopic disorders is well grounded. Lactobacillus GG (LGG) is the most studied probiotic in the prevention and treatment of atopic disorders. Wide and well-designed clinical studies have provided several evidences on the efficacy of LGG as preventive or therapeutic strategy in pediatric atopic disorders. More recently, in vitro studies have provided evidences on the potent immunoregulatory role and on the influence on intestinal microflora composition (toward a more beneficial composition in the prevention and treatment of atopic disorders) elicited by LGG. This view has been further reinforced by recent research showing that LGG is able to improve recovery of intestinal symptoms in infants with CMA-induced allergic colitis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- — 至 12 Months（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •infants aged less than 12 months, with a diagnosis of cow's milk allergy
排除标准
- •age higher than 12 months,
- •concomitant chronic systemic diseases,
- •congenital cardiac defects,
- •active tuberculosis,
- •autoimmune diseases,
- •immunodeficiency,
- •chronic inflammatory bowel diseases,
- •celiac disease,
- •cystic fibrosis,
- •metabolic diseases,
- •malignancy,
- •chronic pulmonary diseases,
- •malformations of the gastrointestinal tract,
- •suspected eosinophilic esophagitis or eosinophilic enterocolitis,
- •suspected food-protein-induced enterocolitis syndrome,
- •suspected cow's milk proteins-induced anaphylaxis
结局指标
主要结局
Occurrence of allergic manifestations
时间窗: 3 yrs
Occurrence of allergic manifestations in children with CMA including atopic eczema, allergic urticaria, asthma, allergic rhinitis.Information on social and demographic factors, family and living conditions, and smoking habits will be documented. Unscheduled visit will be made when possible allergic symptoms will appear. Every 12 months sensitization to common dietary and respiratory antigens will be assessed by skin prick tests (SPT) and prick by prick tests.
次要结局
- Allergic sensitization(3 yrs)
研究者
Roberto Berni Canani
MD, PhD
Federico II University