Denne siden ble automatisk oversatt og nøyaktigheten av oversettelsen er ikke garantert. Vennligst referer til engelsk versjon for en kildetekst.

Milk in Life Conditions (MiLC): Bacterial Composition of Human Milk Pumped and Stored in "Real-Life" Conditions (MiLC)

30. april 2019 oppdatert av: Cornell University

Milk in Life Conditions (MiLC): Characterizing the Bacterial Composition of Human Milk Pumped and Stored in "Real-life" Conditions

The MiLC trial is a randomized control trial of two different breast pump set-ups: mother's own and sterile. The objective of this trial is to investigate the bacterial composition of human milk pumped and stored in "real-life" conditions. To meet this objective, lactating mothers will fully express breast milk from one breast on two consecutive pumping sessions at home, once with the participant's own pumps and collection kits (own pump set-up) and once with a hospital-grade pump and disposable, sterile collection kits (sterile pump set-up). Randomization will be used to determine which pump participants use first. From the total volume of milk pumped during each pumping session, the researchers will collect 1 oz. Milk from both pumps will be stored at home and sampled on days 0, 2, 4, and 30 after expression for analysis of its bacterial composition.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Participants will donate 1 oz of human milk during each of two consecutive pumping sessions, for a total volume of 2 oz donated on one day. To collect this human milk, participants will be asked to fully express one breast during each pumping session. Participants will pump once with the participant's own pump set-up and once with the sterile pump set-up (provided by the research team). Women will be randomized to which pump is used first.

Randomization will be done using stratified randomization as follows: participants were stratified by how their infants were fed, namely whether infants were fed human milk only vs. human milk and complementary foods). Then, randomization was conducted within each strata. The researchers aim to have a minimum of 25 participants in each stratum.

All human milk collections will occur at participants' homes between 0700 and 1100 hours. The second pumping session must begin 3 hours (+/-30 minutes) after the beginning of the first pumping session (e.g. the first pumping session at 7:30 am and the second at 10:30 am). Participants will elect from which breast to donate human milk and that breast will be used for both pumping sessions. Participants will be asked not to nurse from or pump that breast during the 2 hours before the first pumping session and not until after the second pumping session (a total of ~5.5 hours).

From the milk produced during each pumping session (which could be up to ~6 oz), researchers will collect 1 oz using a sterile, plastic syringe. Participants will keep the remaining volume of milk. Each ounce of milk collected will be separated into 5 sterile containers (provided). Participants will store donated milk at home until it is picked up by a researcher 2, 4, and 30 days after pumping.

Studietype

Intervensjonell

Registrering (Faktiske)

52

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Forente stater
    • New York
      • Ithaca, New York, Forente stater, 14853
        • Hay Laboratory, B75C Wing Hall, Cornell University

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

Hunn

Beskrivelse

Inclusion Criteria:

  • Lactating women over the age of 18 years
  • Self-reported as healthy women and infants
  • Use an electric breast pump
  • Confident of ability to donate 1 oz of milk from one breast during each of two consecutive pumping sessions where pumping sessions are 3 hours (+/- 30 minutes) apart and between 0700-1100 hours.
  • Able to store donated milk at home for 30 days
  • Have infants who do not consume formula or only consume formula episodically as long as the most recent formula-feeding occurred > 2 weeks before the day milk is pumped for this study.

Exclusion Criteria:

  • Not confident of ability to donate 1 oz of milk from one breast during each of two consecutive pumping sessions, 3 hours (+/- 30 minutes) apart and between the hours of 0700-1100 hours.
  • Infant consumption of formula in the past 2 weeks
  • Current indication of breast infection (e.g., breast pain, discomfort, lumps, mastitis with fever, red streaks, or hard red portions of the breast)
  • Breast pain that the woman does not consider "normal" for lactation/breastfeeding
  • Signs/symptoms of acute illness in woman or infant in past 7 days including fever (rectal or temporal temperature ≥99.5 F), dark green nasal discharge, diarrhea (abrupt onset of 3 or more excessively "loose" stools in one day), vomiting (where infant vomiting is not associated with feeding), or severe cough.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Grunnvitenskap
  • Tildeling: Randomisert
  • Intervensjonsmodell: Crossover-oppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Sterile pump set-up first
Participants will pump with sterile pump set-ups first. Approximately 3 hours later, participants will pump with their own pump set-ups.
Enhet: Sterile pump set-up
Medela symphony breast pump (model number 0240108) and disposable, sterile collection kits (model number 67399S).
Enhet: Mother's Own pump set-up
Mother's own electric breast pump and own collection kit (previously used and cleaned at home using her usual practices).
Eksperimentell: Mother's Own pump set-up first
Participants will pump with their own pump set-ups first. Approximately 3 hours later, participants will pump with sterile pump set-ups.
Enhet: Sterile pump set-up
Medela symphony breast pump (model number 0240108) and disposable, sterile collection kits (model number 67399S).
Enhet: Mother's Own pump set-up
Mother's own electric breast pump and own collection kit (previously used and cleaned at home using her usual practices).

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Bacterial Community Richness
Tidsramme: 0 days after pumping
Richness is the total number of different bacterial taxa detected in the sample. This metric will be assessed on data collected via high-throughput sequencing of the bacterial 16S rRNA gene present in milk.
0 days after pumping
Bacterial Community Diversity
Tidsramme: 0 days after pumping
Bacterial community diversity will be assessed using the the Shannon diversity index. The Shannon diversity index is a type of entropy measure and is a function of the distribution of the total number of organisms across all of the species. If S is the total number of species in the sample and p_i is the number of organisms in the i-th species divided by the total number of organisms, then Diversity = -Σ p_i log(p_i). This metric will be assessed on data collected via high-throughput sequencing of the bacterial 16S rRNA gene present in milk.
0 days after pumping
Total Live Aerobic Bacterial Counts
Tidsramme: 0 days after pumping
Number of live total aerobic bacteria in milk assessed by aerobic culturing of milk on plate count agar. Reported as colony-forming units (CFU)/mL.
0 days after pumping

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Cornell University

Samarbeidspartnere

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
United States Department of Agriculture (USDA)
University of Idaho

Etterforskere

  • Hovedetterforsker: Kathleen M. Rasmussen, ScD, Cornell University
  • Hovedetterforsker: Anthony Hay, PhD, Cornell University
  • Studieleder: Sarah Reyes, MS, Cornell University

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

22. mai 2017

Primær fullføring (Faktiske)

2. oktober 2017

Studiet fullført (Faktiske)

2. oktober 2017

Datoer for studieregistrering

Først innsendt

6. april 2017

Først innsendt som oppfylte QC-kriteriene

17. april 2017

Først lagt ut (Faktiske)

21. april 2017

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

21. mai 2019

Siste oppdatering sendt inn som oppfylte QC-kriteriene

30. april 2019

Sist bekreftet

1. april 2019

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • IRB #: 1608006566
  • 2T32DK007158-42 (U.S. NIH-stipend/kontrakt)
  • NYC-399436 (Annet stipend/finansieringsnummer: NIFA/USDA)

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

JA

IPD-planbeskrivelse

The researchers are currently undecided about how all the data from the study will be released but 16S rRNA data will be released through INSDC (the International Nucleotide Sequence Database Collaboration, which encompasses NCBI, EBI and DDBJ).

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Ja

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

Kliniske studier på Bakteriell vekst

Søk i lignende forsøk

Sponsorer og samarbeidspartnere

Medisinsk tilstand

Legemiddelintervensjoner

CROs by country

CROs in Zambia

Forhold

Sjeldne sykdommer

Legemiddelintervensjoner

Kosttilskudd

Sponsor / samarbeidspartnere

Steder

Abonnere