| 1 |
What specific markers were used to assess the purity of the STEM-PD batch?
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GIRK2 and ALDH1A1 |
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These markers are used because they are highly specific to mature, functional midbrain dopaminergic (mDA) neurons, which are the therapeutic target for treating Parkinson's disease. Using them ensures the batch consists of the precise cell type needed for clinical efficacy |
The rationale is based on the "Molecular Signature of Midbrain Dopaminergic Neurons." Research published in journals such as Nature Biotechnology or Cell Stem Cell regarding the STEM-PD clinical trial protocols confirms that ALDH1A1 and GIRK2 are standard benchmarks for validating the identity and purity of mature SNc (substantia nigra) dopaminergic neurons |
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| 2 |
What is the primary function of AI in the medical imaging industry?
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To improve diagnostic accuracy and patient outcomes |
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AI analyzes medical images to detect abnormalities more accurately and quickly, reducing human errors and improving patient care |
Based on "Clinical Decision Support Systems (CDSS)," where Deep Learning (CNNs) is used to optimize diagnostics, as documented in the journal Radiology |
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| 3 |
Which of the following is a key benefit of AI in radiology noted in the article?
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Acts as a second medical opinion |
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AI acts as a "second set of eyes" to cross-check findings, reducing human error and missed diagnoses |
Based on "Augmented Intelligence," a concept where AI enhances human diagnostic precision rather than replacing it |
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| 4 |
What does AI literacy refer to according to the article?
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Understanding and knowledge of AI technology |
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AI literacy is defined as the competence to understand, interact with, and effectively use AI technologies, making it a foundational concept rather than technical repair or history |
Based on the framework of "Digital and AI Literacy," which emphasizes cognitive understanding of algorithmic systems, as recognized by international educational standards like UNESCO |
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| 5 |
Which factor is NOT listed as influencing the acceptability of AI among healthcare professionals?
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Technology receptiveness |
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This encompasses the overall willingness of healthcare professionals to adopt new innovations, which is the foundational prerequisite for any AI integration |
Based on the "Technology Acceptance Model (TAM)," which asserts that perceived usefulness and ease of use directly drive technology adoption |
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| 6 |
What role does social influence play in AI acceptability in healthcare according to the article?
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Affects healthcare professionals’ decisions to use AI |
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Social influence (norms and peer opinions) is a key driver that shapes whether professionals choose to adopt or reject new technology in their daily practice |
Based on the "Unified Theory of Acceptance and Use of Technology (UTAUT)," which identifies 'Social Influence' as a core determinant of behavioral intention to use a system |
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| 7 |
What is a perceived threat regarding AI usage in healthcare settings?
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Concerns about replacing healthcare professionals |
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A primary psychological barrier for professionals is the fear that AI might eventually perform clinical tasks better or cheaper, leading to job displacement |
Based on the "Technology Threat Theory," which addresses human concerns regarding the displacement of professional roles and loss of autonomy by automation |
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| 8 |
According to the article, what is essential for increasing AI acceptability among medical professionals?
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Designing human-centred AI systems |
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Designing AI with a "human-centred" approach ensures that the technology aligns with clinical workflows, respects professional autonomy, and focuses on supporting rather than overriding human decision making |
Based on "Human-Centred Design (HCD) in Healthcare," which posits that technology adoption is maximized when tools are co designed to meet the specific needs and values of the end users (medical professionals) |
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| 9 |
What does the 'system usage' category of AI acceptability factors include according to the article?
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Factors like value proposition and integration with workflows |
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It measures how well AI fits into daily medical tasks and adds real value to clinical care |
Based on "Workflow Integration" theories, where technology success depends on fitting existing clinical processes |
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| 10 |
How does ethicality impact AI acceptability among healthcare professionals?
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Affects views on AI based on compatibility with professional values |
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Medical professionals prioritize ethics; if AI aligns with their core professional values (e.g., patient autonomy, privacy), they are more likely to accept it |
Based on "Bioethics and Professional Values Frameworks," which dictate that technology must be morally aligned with medical standards to be integrated into clinical practice |
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| 11 |
What methodological approach did the article emphasize for future AI acceptability studies?
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Considering user experience and system integration deeply |
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Future studies need to move beyond technical metrics to deeply understand how clinicians interact with AI and how it fits into their complex daily workflows |
Based on the "Technology-in-Practice" approach, often cited in journals like Journal of Medical Internet Research (JMIR), which emphasizes that technology success depends on holistic evaluation of user experience and socio-technical integration |
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| 12 |
What is the primary objective of using human embryonic stem cells in treating Parkinson’s disease?
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To replace lost dopamine neurons. |
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Parkinson's disease is characterized by the progressive loss of dopaminergic neurons in the midbrain. The primary goal of stem cell therapy is to differentiate these cells into healthy, functional dopamine-producing neurons to replace those that have died |
Based on the "Cell Replacement Therapy" framework in regenerative medicine, as documented in clinical research and journals such as Cell Stem Cell and Nature |
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| 13 |
Which animal was used to test the STEM-PD product for safety and efficacy?
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Rats |
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Rats are the standard model for Parkinson’s disease research because they allow for precise surgical implantation of human stem cell-derived neurons and are highly effective for evaluating behavioral recovery |
Based on "Preclinical Efficacy Studies" protocols for cell therapy, widely published in scientific journals like Nature Biotechnology, which use rat models to validate the integration and functional survival of transplanted dopaminergic neuron |
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| 14 |
What was the duration of the preclinical safety study in rats mentioned in the article?
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6 months |
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A 6-month period is the minimum time needed to detect long-term risks like tumor growth or unintended cell behavior |
Based on "Preclinical Safety Assessment Guidelines" (e.g., ICH S12), which require extended observation for cell-based medicinal products |
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| 15 |
What is the name of the clinical trial phase mentioned for STEM-PD?
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Phase I/IIa |
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STEM-PD is currently positioned as an early-stage clinical trial, designed to assess both the initial safety (Phase I) and the preliminary efficacy (Phase IIa) of the cell therapy in patients |
Based on "Clinical Trial Design Frameworks," which often combine early phases (I/IIa) for innovative therapies to efficiently establish safety and early signals of clinical benefit |
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| 16 |
How is the STEM-PD product manufactured?
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Under GMP-compliant conditions |
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Manufacturing clinical-grade cell products for human trials requires strict adherence to Good Manufacturing Practice (GMP) standards to ensure product safety, consistency, and quality |
Based on "Regulatory Standards for Advanced Therapy Medicinal Products (ATMPs)," which mandate GMP-compliant manufacturing to minimize risks during clinical application |
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| 17 |
According to the article, what confirmed the safety of the STEM-PD product in rats?
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There were no adverse effects or tumor formation. |
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The absence of tumor formation and adverse effects in long-term safety studies is the primary clinical indicator that the cell product is safe and stable for subsequent use in humans |
This is based on "Preclinical Safety Assessment Protocols," which define the criteria for "no evidence of tumorigenicity or toxicity" as a mandatory requirement for advancing to clinical trials |
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| 18 |
What key finding was noted in the efficacy study of STEM-PD in rats?
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Transplanted cells increased cognitive impairments. |
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Motor reversal proves the transplanted cells successfully integrate and produce dopamine to restore movement |
Based on "Behavioral Recovery Endpoints," standard measures in pre-clinical studies to confirm cellular functionality |
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| 19 |
What role do growth factors like FGF8b and SHH play in the manufacturing process of STEM-PD?
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They are used in cell patterning for specific neural fates. |
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They act as chemical signals that guide stem cells to become the correct type of brain cells |
Based on "Developmental Patterning Theory," which mimics natural embryonic signals to direct cell identity |
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| 20 |
What was a key outcome measured in the preclinical trials for efficacy in rats?
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Recovery of motor function |
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The study focuses on Parkinson's, so motor recovery is the main metric for efficacy |
Based on "Behavioral Recovery Endpoints," standard measures for confirming cellular functionality |
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