인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Community‑acquired pneumonia (CAP) still carries a high long‑term mortality. Free protoporphyrin in erythrocytes (FPP) is a well-recognized biomarker of erythropoietic porphyrias. However, it also reflects impaired heme synthesis, disturbances in iron metabolism, and inflammation-driven erythropoietic alterations, mechanisms particularly relevant in pneumonia. This pilot study aimed to evaluate, for the first time, the prognostic value of FPP and zinc protoporphyrin (ZnPP), measured in acetone extracts of erythrocytes using fluorescence analysis with 405 nm excitation, in predicting 100-day mortality among 66 patients hospitalized with CAP. The area under the ROC curve for FPP fluorescence in predicting mortality was 0.793 (95% CI 0.657-0.928; p < 0.0001), with 63% sensitivity and 94% specificity. Elevated FPP fluorescence was associated with a tenfold higher mortality risk and over fifteenfold greater odds of death, even after adjustment for age and the Charlson Comorbidity Index (CCI). A single fluorescence measurement at 632 nm (F632) demonstrated identical prognostic accuracy to spectral deconvolution-derived FPP intensity. Furthermore, significant correlations were observed between F632 or FPP fluorescence intensities and multiple clinical parameters reflecting disease severity, systemic inflammation, and erythropoietic stress. Given its accessibility and prognostic potential, prospective studies should further validate the method presented to guide individualized clinical management in CAP.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.