Which of the following immune cell types is likely to infiltrate renal interstitium during acute inflammatory nephritis (AIN)?

Which of the following immune cell types is likely to infiltrate renal interstitium during acute inflammatory nephritis (AIN)?

• A. B cells
• B. T cells
• C. Neutrophils
• D. Eosinophils

Answer: (D)

Acute inflammatory nephritis (AIN) often involves a hypersensitivity reaction that typically results from various triggers, including medications, infections, or autoimmune processes. During AIN, eosinophils play a significant role in the immune response and are characteristically found in the renal interstitium. Eosinophils are a type of white blood cell that are particularly implicated in allergic reactions and parasitic infections and also in certain types of kidney inflammation, such as AIN. Their infiltration into the renal interstitium is associated with the hypersensitivity reaction often observed in cases of drug-induced nephritis or other causes of AIN. The presence of eosinophils in the urine or renal tissue can be a diagnostic clue indicating this diagnosis. In contrast, while T cells and neutrophils are certainly involved in various immune responses, the specific infiltration of eosinophils is more characteristic of the acute inflammatory response seen in AIN. B cells, meanwhile, are generally more involved in the formation of antibodies and the humoral immune response rather than in the acute inflammatory processes that dominate AIN.

Acute inflammatory nephritis (AIN) often involves a hypersensitivity reaction that typically results from various triggers, including medications, infections, or autoimmune processes. During AIN, eosinophils play a significant role in the immune response and are characteristically found in the renal interstitium.

Eosinophils are a type of white blood cell that are particularly implicated in allergic reactions and parasitic infections and also in certain types of kidney inflammation, such as AIN. Their infiltration into the renal interstitium is associated with the hypersensitivity reaction often observed in cases of drug-induced nephritis or other causes of AIN. The presence of eosinophils in the urine or renal tissue can be a diagnostic clue indicating this diagnosis.

In contrast, while T cells and neutrophils are certainly involved in various immune responses, the specific infiltration of eosinophils is more characteristic of the acute inflammatory response seen in AIN. B cells, meanwhile, are generally more involved in the formation of antibodies and the humoral immune response rather than in the acute inflammatory processes that dominate AIN.