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

30 de abril de 2019 actualizado por: 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.

Descripción general del estudio

Estado

Terminado

Condiciones

Intervención / Tratamiento

Descripción detallada

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.

Tipo de estudio

Intervencionista

Inscripción (Actual)

52

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

  • Estados Unidos
    • New York
      • Ithaca, New York, Estados Unidos, 14853
        • Hay Laboratory, B75C Wing Hall, Cornell University

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

Sí

Géneros elegibles para el estudio

Femenino

Descripción

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.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Ciencia básica
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación cruzada
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: 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.
Dispositivo: Sterile pump set-up
Medela symphony breast pump (model number 0240108) and disposable, sterile collection kits (model number 67399S).
Dispositivo: 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).
Experimental: 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.
Dispositivo: Sterile pump set-up
Medela symphony breast pump (model number 0240108) and disposable, sterile collection kits (model number 67399S).
Dispositivo: 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).

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Bacterial Community Richness
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Cornell University

Colaboradores

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

Investigadores

  • Investigador principal: Kathleen M. Rasmussen, ScD, Cornell University
  • Investigador principal: Anthony Hay, PhD, Cornell University
  • Director de estudio: Sarah Reyes, MS, Cornell University

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

22 de mayo de 2017

Finalización primaria (Actual)

2 de octubre de 2017

Finalización del estudio (Actual)

2 de octubre de 2017

Fechas de registro del estudio

Enviado por primera vez

6 de abril de 2017

Primero enviado que cumplió con los criterios de control de calidad

17 de abril de 2017

Publicado por primera vez (Actual)

21 de abril de 2017

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

21 de mayo de 2019

Última actualización enviada que cumplió con los criterios de control de calidad

30 de abril de 2019

Última verificación

1 de abril de 2019

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • IRB #: 1608006566
  • 2T32DK007158-42 (Subvención/contrato del NIH de EE. UU.)
  • NYC-399436 (Otro número de subvención/financiamiento: NIFA/USDA)

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

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).

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

Sí

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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