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Related Concept Videos

Clinical Trials01:16

Clinical Trials

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
Clinical Trials: Overview01:11

Clinical Trials: Overview

Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

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.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
Preclinical Development: Overview01:28

Preclinical Development: Overview

Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
Blinding01:11

Blinding

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
Pharmacovigilance01:19

Pharmacovigilance

Post-marketing surveillance is a critical component of pharmaceutical regulation, often uncovering unanticipated adverse drug reactions (ADRs) once a drug is widely used over an extended period.
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...

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Hidden risks associated with clinical trials in developing countries.

Cláudio Lorenzo1, Volnei Garrafa, Jan Helge Solbakk

  • 1Department of Public Health, University of Brasilia, Brazil. claudiolorenzo@unb.br

Journal of Medical Ethics
|February 6, 2010
PubMed
Summary
This summary is machine-generated.

This study examines ethical challenges in international clinical trials, focusing on risks in low-income communities beyond the standard care debate. It proposes enhanced ethics review systems for better participant protection.

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Area of Science:

  • Research Ethics
  • Global Health
  • Clinical Trials

Background:

  • Growing focus on protecting vulnerable populations in international clinical trials.
  • Revision of the Declaration of Helsinki (2008) highlighted the need for ethical standards.
  • Limited attention to lifestyle interactions and risk mitigation in low-income settings.

Purpose of the Study:

  • To discuss uncertainties in clinical trials in low-income countries not covered by standard risk assessment.
  • To analyze the amplification of identified risks in these settings.
  • To explore challenges in implementing risk-minimizing procedures effectively.

Main Methods:

  • Literature review on research ethics and international clinical trials.
  • Analysis of risk assessment methodologies in diverse socioeconomic contexts.
  • Discussion of ethical considerations specific to low-income communities.

Main Results:

  • Conventional risk assessment methods are insufficient for unique challenges in low-income countries.
  • Lifestyle factors in these communities can complicate risk mitigation strategies.
  • Identified risks may be underestimated or amplified by conventional methods.

Conclusions:

  • Research ethics committees should be involved in risk evaluation.
  • National ethics evaluation systems are needed for robust oversight.
  • Improved frameworks are essential for ethical clinical trials in resource-limited settings.