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Sources of Bacterial Contamination in Human Milk Samples From the MiLC Trial

2019年1月11日更新者：Cornell University

Sources of Bacterial Contamination in Human Milk Samples From the Milk in Life Conditions (MiLC) Trial

This observational study is a sub-study of the MiLC Trial (ClinicalTrials.gov Identifier: NCT03123874). Our objective is to characterize the bacterial communities of women's breasts, hands, their pump and milk collection kit, and their babies' mouths among the participants of the MiLC Trial. As part of the original protocol, we collected swabs of each of these areas from each dyad before women pumped with their own pumps. By characterizing these communities, we can identify from where the bacteria in human milk (HM) originates, and determine whether pumping with mother's own pumps enriches the bacterial communities of HM compared to pumping with a sterile pump.

調査の概要

状態

完了

条件

Bacterial Communities

研究の種類

観察的

入学 (実際)

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究場所

アメリカ
- New York
  - Ithaca、New York、アメリカ、14853
    - Hay Laboratory, B75C Wing Hall, Cornell University

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

18年歳以上 (大人、高齢者)

健康ボランティアの受け入れ

はい

受講資格のある性別

女性

サンプリング方法

非確率サンプル

調査対象母集団

Mother-infant dyads who participated in the MiLC Trial. These were healthy, lactating women 18 years or older. Women had no signs of breast infection and self-reported that they nor their infants had signs/symptoms of acute illness 7 days before participating in the study. We also restricted participation to women who pumped with electric breast pumps, who could donate 1 oz of their milk on two consecutive pumping sessions from the same breast, and women whose infants had not consumed formula within the past 2 weeks. A full description of eligibility criteria can be found on the original protocol (ClinicalTrials.gov Identifier: NCT03123874).

説明

Inclusion Criteria:

Mother-infant dyads who participated in the MiLC Trial.

Exclusion Criteria:

Anyone who did not participate in the MiLC Trial.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか？

デザインの詳細

グループ/コホートの数

コホートと介入

グループ/コホート
MiLC Cohort Participants donated HM from two consecutive pumping sessions at home. Women pumped once with their own pump and milk collection kit, and once with a sterile and sterile collection kit. Both pumping sessions occurred at participants' homes between 0700 and 1100 hours. The second pumping session occurred within 3 hr (+/- 30 min) after the beginning of the first. Randomization was used to determine which pump was used first. Women elected from which breast they donated their HM and were asked not to nurse on that side 2 hr before the first pumping session and not until after the second. Before women pumped with their own pump, swabs were taken of the breast from which HM was donated, the women's dominant hand, their own bottle/flange, their own pumps (port of pump and tubing), and their babies' mouths. There was only one group but stratified enrollment was used to ensure equal numbers of women whose infants consumed HM only and women whose infants consumed HM and complementary foods.

グループ/コホート

MiLC Cohort

Participants donated HM from two consecutive pumping sessions at home. Women pumped once with their own pump and milk collection kit, and once with a sterile and sterile collection kit. Both pumping sessions occurred at participants' homes between 0700 and 1100 hours. The second pumping session occurred within 3 hr (+/- 30 min) after the beginning of the first. Randomization was used to determine which pump was used first. Women elected from which breast they donated their HM and were asked not to nurse on that side 2 hr before the first pumping session and not until after the second. Before women pumped with their own pump, swabs were taken of the breast from which HM was donated, the women's dominant hand, their own bottle/flange, their own pumps (port of pump and tubing), and their babies' mouths.

There was only one group but stratified enrollment was used to ensure equal numbers of women whose infants consumed HM only and women whose infants consumed HM and complementary foods.

この研究は何を測定していますか？

主要な結果の測定

結果測定	メジャーの説明	時間枠
Bacterial communities 時間枠：0 days after pumping	Bacterial communities of each swab (breast, hand, mother's own bottle/flange, mother's own pump/tubing, and infant mouth) will be determined by next-generation sequencing of the V1-V3 region of the 16S rRNA bacterial gene.	0 days after pumping

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

Cornell University

協力者

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

University of Idaho

捜査官

スタディディレクター：Sarah M Reyes, MS、Cornell University
主任研究者：Kathleen M Rasmussen, ScD、Cornell University
主任研究者：Anthony G Hay, PhD、Cornell University

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2017年6月10日

一次修了 (実際)

2017年9月3日

研究の完了 (実際)

2017年9月3日

試験登録日

最初に提出

2017年12月7日

QC基準を満たした最初の提出物