Genetic Risk Factors
Genetic Risk Factors - Related Videos
01:26
Factors Affecting the Risk of Infection
0 Views •
2023
The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases. The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin create...
01:24
Drug Toxicity: Risk factors
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2026
Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
09:38
Generalized Psychophysiological Interaction (PPI) Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease
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Cited by 13 •
2017
This manuscript describes how to implement a psychophysiological interaction analysis to reveal task-dependent changes in functional connectivity between a selected seed region and voxels in other regions of the brain. Psychophysiological interaction analysis is a popular method to examine task effects on brain connectivity, distinct from traditional univariate activation effects.
10:47
An Overview of Genetics and Disease
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2023
Many human diseases are associated with mutations or variations in genetic sequences. Some of these genetic variants are heritable, passed down from generation to generation, while others arise sporadically during an organism’s life and cause diseases such as cancer. Researchers are trying to identify and characterize these genetic alterations in the hopes of improving diagnosis and therapeutic options for patients.In this video, we will examine the history of genetic disease research, and...
10:11
Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies
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Cited by 45 •
2014
Retinal image analysis is an unobtrusive procedure for visualizing the microcirculation. The impact of cardiovascular disease risk factors can result in changes of retinal vessel calibers. The procedures to acquire fundus images and the steps for calculating the vessel calibers are described.
FAQs
A variant may alter gene expression, which changes how much of a gene product cells produce, or it may affect protein function directly. These changes can modify biological pathways involved in disease. Because pathways operate within larger biological and environmental systems, the same inherited alteration can increase susceptibility without determining whether the condition will develop.
Many conditions reflect a polygenic risk profile, in which numerous variants contribute small changes to overall susceptibility. Their combined influence may be more informative than any single variant considered alone. This framework helps explain why inherited risk can vary across individuals and why genetic findings generally describe likelihood rather than a certain clinical outcome.
Genetic risk does not operate independently of a person’s surroundings. Environmental exposures can combine with inherited variants to influence biological pathways and affect whether disease develops. Consequently, interpreting risk requires attention to both the genetic profile and relevant exposures, rather than treating DNA findings as a complete prediction of an individual’s future health.
Clinical use can begin with assessing risk within a family and determining whether genetic counseling or targeted testing is appropriate. Findings may then inform earlier or more tailored screening and preventive care. These steps support individualized decision-making while preserving the important distinction between increased likelihood and a guaranteed disease outcome.
Genetic counseling helps place an inherited finding in the context of family risk, other variants, and environmental influences. It also provides a setting to discuss uncertainty and the possible implications of testing. This context is important because genetic results can guide screening or prevention without providing a definitive prediction for an individual.
In research, these factors can help clarify disease mechanisms by linking inherited variation with altered gene expression, protein function, or biological pathways. Clinically, that knowledge supports more tailored approaches to screening and preventive care. Applying such information requires attention to uncertainty and ethical considerations, especially when genetic findings may affect individuals and families.