Which of the following is a characteristic finding in progeria?
High levels of hyaluronic acid
Low levels of glutamate
High levels of thyroxine
Low levels of calcitonin
The Correct Answer is A
A. Progeria, also known as Hutchinson-Gilford Progeria Syndrome (HGPS), is characterized by accelerated aging. One of the biochemical changes observed in this condition is an increase in hyaluronic acid levels, which is associated with skin changes and the premature aging process seen in affected individuals.
B. Low levels of glutamate are not characteristic of progeria. Glutamate is a neurotransmitter, and its levels are not typically altered in progeria.
C. High levels of thyroxine are not associated with progeria. Thyroxine levels are related to thyroid function, and there is no direct link between high thyroxine levels and progeria.
D. Low levels of calcitonin are not characteristic of progeria. Calcitonin is a hormone involved in calcium regulation, and its levels are not notably altered in progeria.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. While inflammation plays a role in restoring functional cells, it is not the ultimate goal. The primary purpose of inflammation is to prepare the site for healing, which includes clearing out damaged cells and pathogens.
B. Inflammation is a vital process that helps prepare the site for healing by facilitating the removal of dead tissue and pathogens, allowing for tissue repair. It also promotes the formation of new tissue.
C. Platelet aggregation and clotting are part of the inflammatory process, but the ultimate goal of inflammation is not to increase platelets but to prepare the site for repair and healing.
D. Inflammatory mediators typically cause vasodilation to increase blood flow to the affected area, not vasoconstriction. This helps deliver nutrients, oxygen, and immune cells to the site of injury.
Correct Answer is C
Explanation
A. Inhaling toxic fumes can cause damage to the lungs and airways, leading to inflammation and fluid accumulation in the alveoli, triggering acute respiratory distress syndrome (ARDS).
B. Severe lung infections, such as pneumonia, can lead to ARDS due to widespread inflammation and fluid in the lungs, which impairs gas exchange.
C. All of these can trigger acute respiratory distress syndrome. ARDS can be caused by a variety of factors, including inhalation of toxic fumes, severe lung infections, and aspiration of stomach contents, all of which can lead to inflammation and damage to the lung tissue.
D. Aspirating stomach contents into the lungs can lead to aspiration pneumonia, which can cause ARDS due to the inflammatory response in the lungs.
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