OBJECTIVES: The effect of intrapartum antibiotic prophylaxis (IAP) for group B Streptococcus (GBS) on bacterial colonization of the infant's gut has not been investigated extensively. We aimed to evaluate the effect of IAP on gut microbiota in healthy term infants, also exploring the influence of type of feeding. METHODS: Healthy term infants, whose mothers had been screened for GBS in late gestation, were divided into 2 groups: infants born to GBS-positive mothers who had received IAP versus controls. Neonatal fecal samples were collected at 7 and 30 days of life; DNA was extracted, and quantification of selected microbial groups (Lactobacillus spp, Bifidobacterium spp, and Bacteroides fragilis group) was performed by real-time PCR. RESULTS: A total of 84 infant-mother pairs were recruited. Bifidobacteria count was significantly lower in the IAP group at 7 days of life (median [interquartile range] 6.01 Log colony-forming unit per gram [5.51-6.98] vs 7.80 [6.61-8.26], P = 0.000). No differences in Bifidobacteria count at 30 days or in Lactobacilli and B fragilis counts at any time point were documented. Furthermore, at 7 days of life, infants who had not received IAP and were exclusively human milk-fed had higher counts of Bifidobacteria. Regardless of IAP treatment, infants fed exclusively human milk had higher Lactobacillus spp counts both at 7 and 30 days of life. CONCLUSIONS: IAP alters gut microflora by reducing the count of Bifidobacteria, which is further affected in infants receiving formula feeding. Whether these alterations could have long-term consequences on health and disease requires further investigation.
OBJECTIVES: The effect of intrapartum antibiotic prophylaxis (IAP) for group B Streptococcus (GBS) on bacterial colonization of the infant's gut has not been investigated extensively. We aimed to evaluate the effect of IAP on gut microbiota in healthy term infants, also exploring the influence of type of feeding. METHODS: Healthy term infants, whose mothers had been screened for GBS in late gestation, were divided into 2 groups: infants born to GBS-positive mothers who had received IAP versus controls. Neonatal fecal samples were collected at 7 and 30 days of life; DNA was extracted, and quantification of selected microbial groups (Lactobacillus spp, Bifidobacterium spp, and Bacteroides fragilis group) was performed by real-time PCR. RESULTS: A total of 84 infant-mother pairs were recruited. Bifidobacteria count was significantly lower in the IAP group at 7 days of life (median [interquartile range] 6.01 Log colony-forming unit per gram [5.51-6.98] vs 7.80 [6.61-8.26], P = 0.000). No differences in Bifidobacteria count at 30 days or in Lactobacilli and B fragilis counts at any time point were documented. Furthermore, at 7 days of life, infants who had not received IAP and were exclusively human milk-fed had higher counts of Bifidobacteria. Regardless of IAP treatment, infants fed exclusively human milk had higher Lactobacillus spp counts both at 7 and 30 days of life. CONCLUSIONS: IAP alters gut microflora by reducing the count of Bifidobacteria, which is further affected in infants receiving formula feeding. Whether these alterations could have long-term consequences on health and disease requires further investigation.
Authors: Torri D Metz; Jennifer McKinney; Amanda A Allshouse; Shanna Doucette Knierim; J Christopher Carey; Kent D Heyborne Journal: J Matern Fetal Neonatal Med Date: 2019-02-07
Authors: M O Coker; A G Hoen; E Dade; S Lundgren; Z Li; A D Wong; M S Zens; T J Palys; H G Morrison; M L Sogin; E R Baker; M R Karagas; J C Madan Journal: BJOG Date: 2019-06-05 Impact factor: 6.531
Authors: Miren B Dhudasia; Jonathan M Spergel; Karen M Puopolo; Corinna Koebnick; Matthew Bryan; Robert W Grundmeier; Jeffrey S Gerber; Scott A Lorch; William O Quarshie; Theoklis Zaoutis; Sagori Mukhopadhyay Journal: Pediatrics Date: 2021-04-08 Impact factor: 7.124
Authors: Lesley McGee; Sopio Chochua; Zhongya Li; Saundra Mathis; Joy Rivers; Benjamin Metcalf; Alison Ryan; Nisha Alden; Monica M Farley; Lee H Harrison; Paula Snippes Vagnone; Ruth Lynfield; Chad Smelser; Alison Muse; Ann R Thomas; Stephanie Schrag; Bernard W Beall Journal: Clin Infect Dis Date: 2021-03-15 Impact factor: 9.079