If a diabetic patient experiences prolonged elevated blood glucose after a surgical wound, which consequence follows regarding collagen synthesis?

💡 Explanation

Hyperglycemia impairs the non-enzymatic glycation of collagen, a process that interferes with normal collagen cross-linking; this impairs wound healing because collagen cross-linking is vital for tensile strength. Therefore, collagen cross-linking is impaired, rather than increased fibroblastic proliferation, which would promote collagen deposition under normal conditions.

• A patient with pulmonary fibrosis experiences thickened alveolar walls. If arterial pCO2 remains normal, which consequence follows regarding respiratory gas exchange?
• Why does prolonged exposure to cold temperatures initially induce shivering, but later cause it to cease even if the cold stress persists?
• An individual with chronic stress exhibits elevated cortisol levels, which can affect glucose metabolism. Which outcome is most likely in the liver when exposed to sustained high cortisol?
• Which mechanism explains why localized edema develops after a surgical incision disrupts lymphatic vessels?
• Why does chronic low-grade inflammation increase atherosclerotic plaque formation within arterial walls?
• Why does excess fructose consumption potentially cause non-alcoholic fatty liver disease (NAFLD)?