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Related Concept Videos

Probiotics01:22

Probiotics

Probiotics are live, non-pathogenic microorganisms that confer health benefits by modulating the gut microbiota. The human gastrointestinal tract harbors a complex microbial ecosystem, and the balance of this microbiota is crucial for digestive and systemic health. Among the most extensively studied and utilized probiotics are species formerly classified within the genera Lactobacillus and Bifidobacterium. These organisms not only naturally colonize the human gut but are also consumed through...
Bioavailability Study Design: Healthy Subjects Versus Patients01:15

Bioavailability Study Design: Healthy Subjects Versus Patients

Bioavailability studies are essential for evaluating a drug's therapeutic efficacy and understanding its absorption patterns under various physiological conditions. Conducting such studies on target patient populations provides more relevant data by simulating real-world disease states. However, practical challenges often necessitate the use of young, healthy adult volunteers as study subjects.Patients may exhibit altered drug absorption patterns due to the effects of the disease itself,...
Development of Human Microbiota01:30

Development of Human Microbiota

The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
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Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
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Introduction to the Human Microbiota01:22

Introduction to the Human Microbiota

Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...
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Healthcare Associated Infections II: Preventive Measures

Essential infection prevention measures are based on the knowledge of the infection chain, the modes of transmission in healthcare settings, and the use of the best practices in all healthcare settings. Compulsory public reporting of healthcare-associated infection rates is needed to allow individuals and the community to make informed choices regarding selecting a healthcare facility.
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Related Experiment Video

Updated: Jun 5, 2026

Probiotic Studies in Neonatal Mice Using Gavage
10:36

Probiotic Studies in Neonatal Mice Using Gavage

Published on: January 27, 2019

Probiotic Human Study Design and Reporting (PRODARE): Recommendations to Improve Research Practice.

Hania Szajewska1, Marc Benninga2, Georgia Chatonidi3

  • 1Department of Paediatrics, The Medical University of Warsaw, Warsaw, Poland.

Advances in Nutrition (Bethesda, Md.)
|June 3, 2026
PubMed
Summary
This summary is machine-generated.

The PRODARE recommendations offer a framework for designing human probiotic studies, ensuring product viability and quality. These guidelines address five study types to improve research rigor and reporting for probiotics.

Keywords:
exploratory studieshuman study designobservational cohort studiespilot studiesprobioticsrandomized controlled trialsreal-world studiesrecommendations

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Last Updated: Jun 5, 2026

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Published on: July 31, 2019

Area of Science:

  • Microbiology and Clinical Research
  • Human Microbiome Studies
  • Nutritional Science

Background:

  • Designing human studies with probiotics presents unique challenges, particularly concerning product viability and strain specificity.
  • Existing research guidelines often lack the specificity required for live, strain-specific microorganisms.
  • Methodological inconsistencies can hinder the interpretation and reproducibility of probiotic research.

Purpose of the Study:

  • To introduce the PRODARE recommendations, a consensus-based framework for designing and reporting human studies involving probiotics.
  • To provide a structured decision tree to guide researchers in selecting appropriate study designs based on their objectives.
  • To enhance the quality, rigor, and reporting standards of probiotic research.

Main Methods:

  • Identification and description of five key study types: exploratory, pilot, randomized controlled trials (RCTs), real-world studies, and observational cohort studies.
  • Emphasis on probiotic-specific considerations including strain characterization, viability, purity, and dosage consistency.
  • Development of a structured decision-making process linking study objectives to design and reporting standards.

Main Results:

  • The PRODARE framework categorizes studies into five distinct types, each with specific design and reporting requirements.
  • Key probiotic-specific factors such as strain identity, viability, and purity are highlighted as critical for all study types.
  • A decision tree is presented to assist researchers in choosing the most appropriate study design.

Conclusions:

  • The PRODARE recommendations provide a comprehensive, tailored framework to address the complexities of human probiotic research.
  • Adherence to these guidelines will improve the quality, consistency, and interpretability of findings from probiotic intervention studies.
  • This framework aims to standardize the design and reporting of probiotic studies, ultimately advancing the field.