Cultivation-independent assessment of the bacterial diversity of breast milk among healthy women.

Res Microbiol

Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Universidad Complutense de Madrid, 28040 Madrid, Spain.

Published: June 2007

Breast milk has been shown to be an excellent and continuous source of commensal and potentially probiotic bacteria to the infant gut. Our aim was to evaluate the dominant bacteria existing in breast milk of healthy women and the potential role of transit through the vagina in the acquisition of breast milk microbiota using the 16S rRNA amplified gene approach. Samples of breast milk were aseptically collected, at day 7 after delivery, from five mothers whose neonates were born by vaginal delivery and from five others who had had their babies by programmed elective cesarean section. All mothers were healthy, had a full-term pregnancy and breastfed their infants. DNA extracted from biological samples was used as a template for PCR amplification of 16S rRNA gene sequences with universal bacterial primers; then the PCR products were analyzed by denaturing gradient gel electrophoresis (DGGE); finally, clone libraries of 16S rRNA gene sequences from 4 mothers (2 from each group) were constructed. PCR DGGE patterns and clone libraries suggest that each woman had a specific bacterial pattern in her breast milk, and confirm, at the molecular level, that breast milk of healthy women is a source of commensal bacteria to the infant gut. They also reinforce recent molecular studies which have shown that lactic acid bacteria colonization is not significantly related to the delivery method.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.resmic.2006.11.004DOI Listing

Publication Analysis

Top Keywords

breast milk
28
milk healthy
12
healthy women
12
16s rrna
12
source commensal
8
bacteria infant
8
infant gut
8
rrna gene
8
gene sequences
8
clone libraries
8

Similar Publications

This study aimed to investigate the digestion and absorption properties of caprine milk serum proteins in comparison to human and bovine species by using rat pups to mimic preterm infants. The results indicate that caprine lactoferrin (LTF) had a shorter retention time in the intestine and released a greater number of fragments, resembling human milk LTF more closely. In contrast, caprine immunoglobulins (Igs) were similar to bovine Igs and both exhibited a longer retention time in the intestine.

View Article and Find Full Text PDF

Brucellosis is considered a common bacterial zoonotic disease of high prevalence in countries of the Middle East and the Mediterranean region with economic and public health impact. The present study aimed to investigate the current situation of brucellosis in small ruminants reared in Médéa and Sidi Bel-Abbès provinces, north Algeria. To achieve this objective, 96 sera (77 sheep and 19 goat) and 57 milk (42 sheep and 15 goat) samples were collected from suspected infected animals and serologically analyzed by using ELISA.

View Article and Find Full Text PDF

An Au-Ag@Au fiber surface plasmon resonance sensor for highly sensitive detection of fluoroquinolone residues.

Analyst

January 2025

Tianjin Key Laboratory for Marine Environmental Research and Service, School of Marine Science and Technology, Tianjin University, Tianjin 300072, PR China.

Antibiotic residue detection plays an important role in protecting human health, but real-time, rapid, and highly sensitive detection is still challenging. Herein, gold and silver nanoparticles (Au-Ag NPs) were grown on the surface of optical fibers and a 50 nm thick gold film was deposited on the sensor's surface to fabricate the Au-Ag@Au fiber SPR sensor. The sensitivity of the sensor reached 3512 nm per RIU in the refractive index range of 1.

View Article and Find Full Text PDF

Background: Most women can produce enough milk to exclusively breastfeed. However, a small cohort are prevented from doing so due to a condition known as primary low milk supply. The aim of the study was to provide new insights into how mothers with this condition experience help and support from professionals, volunteer support groups, and partners.

View Article and Find Full Text PDF

A resource of longitudinal RNA-seq data of Holstein cow rumen, duodenum, and colon epithelial cells during the lactation cycle.

BMC Genom Data

January 2025

Animal Genomics and Improvement Laboratory, BARC, Agricultural Research Service, USDA, Beltsville, MD, 20705, USA.

As one of the most important ruminant breeds, Holstein cattle supply a significant portion of milk and dairy for human consumption, playing a crucial role in agribusiness. The goal of our study was to examine the molecular adaptation of gastrointestinal tissues that facilitate milk synthesis in dairy cattle. DATA DESCRIPTION: We performed RNA-seq analysis on epithelial cells from the rumen, duodenum, and colon at eight different time points: Days 3, 14, 28, 45, 120, 220, and 305 in milk, as well as the dry period.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!