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Updated: Jan 28, 2026

Isolation of Precursor B-cell Subsets from Umbilical Cord Blood
Published on: April 16, 2013
10-year experience with umbilical cord blood IgE and microbiome therapy
Jiří Liška1, Konrad Siala2, Blanka Čuláková2
1Mulac Hospital, Newborn Department, Pilsen, Czech Republic. mudr.jiri.liska@seznam.cz.
Insights
Early probiotic intervention with Escherichia coli (E. coli) in newborns may reduce allergy and illness. This strain-specific approach supports healthy immune development and lowers long-term morbidity in high-risk infants.
Area of Science:
- Microbiology
- Immunology
- Pediatrics
Background:
- Allergic diseases are a growing global health concern, particularly in children.
- The role of probiotics in infant allergy prevention is debated.
- Immune system development, including T-helper cell balance and immunoglobulin production, is crucial for allergy risk.
Purpose of the Study:
- To investigate the effect of a specific probiotic strain, Escherichia coli (E. coli) (Colinfant Newborn), on allergy and morbidity in high-risk newborns.
- To assess the impact of early probiotic intervention on immunoglobulin levels and immune development.
Main Methods:
- Umbilical cord blood samples from 3000 newborns with a family history of allergy were analyzed for IgE levels.
- Infants with high IgE levels received Colinfant Newborn for one month.
- Immunoglobulin levels (IgE, A, G), illness incidence, and allergy development were monitored at 15 months and three years.
Main Results:
- Eighty percent of treated infants showed reduced IgE and morbidity, with no clinical allergy signs.
- Ninety percent of treated infants had normalized Immunoglobulins A and G, correlating with significantly lower morbidity up to age four.
- Colinfant Newborn colonization stimulated intestinal antibody production and optimized immune development.
Conclusions:
- Physiological Escherichia coli (E. coli) positively impacts the newborn gut microbiome, reducing allergy and morbidity.
- Early administration of this specific E. coli strain appears beneficial for immune development and long-term health.
- The observed benefits are likely strain-specific, highlighting the importance of probiotic selection.
Background:
The benefit of probiotics in newborn children in relation to allergy and general morbidity later in life appears to be controversial. Allergic diseases represent an increasingly important health problem worldwide in recent years. This is evident in all age groups. The occurrence of allergic illnesses also continues to rise exponentially, and thus the use of preventive and prognostic methods, particularly in children with an inherently higher risk of allergy, is gaining increased importance. Since the advent of probiotics the effect of probiosis on immunity through alterations of composition and function of the human gut microbiome has been increasingly studied. The exact mechanisms have not yet been clearly defined. The Academy of Sciences of the Czech Republic (The Czech Academy of Sciences has suggested that the expression of TH1 and TH2 cytokines in umbilical blood is associated with an increased risk of allergies. The counter -balance of Th1 and Th2 affect Immunoglobulin E (IgE) production and maturation of the gastrointestinal tract epithelium.
Case Presentation:
We examined IgE levels in 3000 samples of umbilical blood taken from children born into families with a positive history of allergy in one or both parents from 2007 to 2017. At the age of ten days, those with high IgE were given Colinfant Newborn (a lyophilized non-pathogenic strain of Escherichia.coli) for one month, three times weekly. At 15 months and three years we investigated the levels of Immunoglobulins E,A and G, and the incidence of illness and allergy. The results revealed that allergy and high umbilical IgE is strongly linked with family history (p ≤ 0.001). We also detected differences in seasonality, especially with regards to pollen allergies. Eighty percent of children treated with Colinfant Newborn had significantly reduced IgE and morbidity at 13-15 months and 3 years, and furthermore without any clinical signs of allergy. Normalization of Immunoglobulins A and G was seen in 90% of treated subjects (p ≤ 0.001). These levels significantly correlated with an almost negligible morbidity up to 4 years of life. Colinfant Newborn, a lyophilized strain of Esherichia coli (E. coli), and a normal component of intestinal flora, readily colonizes the intestinal tract. It's long term presence significantly stimulates the production of specific and non-specific intestinal antibodies. and optimalizes immune development through tolerance. In our study Colinfant Newborn reduced the incidence of infections later in life by safely and effectively normalizing immunoglobulin levels in the majority of treated patients.
Conclusion:
Our study strongly suggests as positive effect of physiological Escherichia coli on the microbiome of newborn children as evidenced by a significantly reduced incidence of allergy and morbidity when applied early in life. These benefits appear to be strongly strain specific.
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