Objective:To study the interaction between the SARS-S1 protein and the SARS-sensitive cells.Methods:The SARS-S1 expression in the E.coli was purified and the anti-SARS-S1 was produced.After incubate with the SARS-S1 protein,cells was staining by the mouse-anti-SARS-S1 antibody and the anti-mouse antibody labeled by FITC.The result was determined by FACS.Results:After incubate with the SARS-S1 protein,different cell line have a different reaction to the SARS-S1 antibody.Conclusion:The SARS-S1 protein expressed by E.coli has a specific binding ability to the SARS-sensitive cells.

To present the clinical characteristics and the misdiagnosis rate of acute coronary syndrome manifested primarily as throat discomfort, we conducted a multicentric and retrospective study in the cardiology and otorhinolaryngology departments. Records of patients with primary complaint of throat discomfort, absence of chest pain at onset, and an ultimate diagnosis of acute coronary syndrome, as well as patients with pharyngitis (as controls) were collected from May 2015 to April 2016. The patients' main manifestations were compared. Logistic regression results showed that chest tightness, dyspnea, perspiring, and exertional throat symptoms were significantly associated with acute coronary syndrome, with odds ratios of 8.3 (95% CI 2.2-31.5), 10.9 (95% CI 1.8-66.9), 25.4 (95% CI 3.6-179.9), and 81.2 (95% CI 13.0-506.7). A total of 25 (56.82%) out of 44 acute coronary syndrome patients, who were first admitted to the otorhinolaryngology department, were misdiagnosed, with a 12% (3/25) mortality rate. Throat discomfort can be the principal manifestation of acute coronary syndrome. Such patients exhibit high misdiagnosis and mortality rates. Exertional throat symptoms, chest tightness, perspiring, and dyspnea were important indicators of acute coronary syndrome in patients whose main complaint was throat discomfort. The awareness of this condition will result in prompt diagnosis and reduce morbidity and mortality.
Acute Coronary Syndrome/etiology* ; Dyspnea/etiology* ; Humans ; Pharyngitis/diagnosis* ; Pharynx ; Retrospective Studies